Gas-charging and flanging machine

A gas-charging and flanging machine (10) includes a sealed chamber (13a). The gas-charging and flanging machine is used for carrying out, inside the sealed chamber, charging of a gas into a workpiece (20) and flanging of the workpiece (20) by spinning and pressing. The gas-charging and flanging machine charges a gas into a workpiece and flanges the workpiece on the same machine such that production efficiency can be improved.

TECHNICAL FIELD

The present disclosure relates to the field of shock absorber processing, and in particular to a gas-charging and flanging machine.

BACKGROUND

At present, gas-charging and flanging of a shock absorber are processed by different machines. Gas-charging is carried out after flanging using a different machine, and as such production efficiency is low. During gas-charging, an insert needs to be inserted through a sealing ring of the shock absorber to be processed. Such an operation will easily damage the sealing ring and affect the sealing performance of the shock absorber assembly.

SUMMARY

The present disclosure aims to solve at least one of the technical problems existing in the prior art. To this end, the present disclosure is required to provide a gas-charging and flanging machine.

The present disclosure provides a gas-charging and flanging machine, including a sealed chamber, the gas-charging and flanging machine being used for carrying out, inside the sealed chamber, charging of a gas into a workpiece and flanging of the workpiece by spinning and pressing.

Preferably, the gas-charging and flanging machine further includes:a gas-charging device; anda spin-and-press flanging device, wherein the gas-charging device is used for charging the gas into the workpiece, and the spin-and-press flanging device is used for flanging the workpiece charged with the gas, the gas-charging device including:a first clamping block;a second clamping block;a first clamping mechanism;a second clamping mechanism; anda gas intake nozzle, wherein the first clamping mechanism is used for driving the first clamping block to move, and the second clamping mechanism is used for driving the second clamping block to move, the first clamping block and the second clamping block are used for enclosing and forming the sealed chamber, the sealed chamber is in communication with the gas intake nozzle, the spin-and-press flanging device is a horizontal spin-and-press flanging device or a vertical spin-and-press flanging device, and the sealing chamber is used for housing the horizontal spin-and-press flanging device or the vertical spin-and-press flanging device.

Preferably, the first clamping mechanism includes a first clamping cylinder; a first cylinder seat; and a first clamping block seat, wherein the first clamping cylinder being mounted on the first cylinder seat, and the first clamping cylinder and the first clamping block being connected respectively to a left and right end of the first clamping block seat; and wherein the second clamping mechanism comprises a second clamping cylinder; a second cylinder seat; and a second clamping block seat, the second clamping cylinder being mounted on the second cylinder seat, and the second clamping cylinder and the second clamping block being connected respectively to a left and right end of the second clamping block seat.

Preferably, the second clamping block seat is provided with the gas intake nozzle, the second clamping block seat and the second clamping block together form a gas intake passage, and the gas intake passage is in communication with the gas intake nozzle and the sealing chamber.

Preferably, the spin-and-press flanging device includes:a sealing wheel mounting disk;a guiding mechanism; anda spin-and-press mechanism, wherein the guiding mechanism and the spin-and-press mechanism are mounted on the sealing wheel mounting disk, the guiding mechanism is used for straightening the workpiece so that the workpiece is disposed coaxially with the spin-and-press flanging device, and the spin-and-press mechanism is used for spinning and pressing the workpiece so as to achieve flanging of the workpiece.

Preferably, the gas-charging and flanging machine further includes a fixing device for fixing the workpiece, the fixing device including:a base;a mounting bracket;a positioning block;a swinging rod;a pressing rod;a cylinder; anda connecting rod, wherein the base includes a bottom plate and a fixing position disposed on the bottom plate, the fixing position is used for mounting the workpiece, the mounting bracket is fixed on the bottom plate, the positioning block is fixed on the mounting bracket, the cylinder is fixed on the mounting bracket, and the cylinder is used for driving the connecting rod, the swinging rod is rotatably mounted on the mounting bracket, the swinging rod comprises a first swinging rod and a second swinging rod connected to the first swinging rod, the first swinging rod is connected to the connecting rod, the second swinging rod is connected to the pressing rod, and the pressing rod is used for pressing the workpiece against the positioning block.

Preferably, the second swinging rod is formed with a mounting groove, the pressing rod comprises an abutting portion and a cylindrical portion connected to the abutting portion, the cylindrical portion is disposed in the mounting groove, a fixing nut is mounted on the cylindrical portion, the second swinging rod is located between the abutting portion and the fixing nut, and the abutting portion is used for abutting against the workpiece.

Preferably, the gas-charging and flanging machine further includes a driving mechanism and a screw rod, wherein the driving mechanism is used for driving the screw rod to rotate, and the screw rod is used for connecting a piston rod of the workpiece.

Preferably, the gas-charging and flanging machine further includes a load sensor; a sensor head; and a sensor push rod, the driving mechanism including a screw rod rotating motor; a screw rod rotating driving gear; and a screw rod rotating driven gear, wherein the motor is connected to the driving gear, the driving teeth meshes with the driven gear, the sensor push rod is disposed on the driven gear, the sensor push rod is facing screw rod, the sensor head is located directly above the sensor push rod, and the load sensor is electrically coupled to the sensor head.

Preferably, the gas-charging and flanging machine further includes a rod-extracting mechanism, the rod-extracting mechanism including a rod-extracting power device; a lifting frame; a moving plate; a screw threaded rod; and a screw threaded rod nut, wherein the screw rod is mounted on the moving plate, the moving plate is slidably mounted on the lifting frame, the screw rod and the moving plate are connected by the screw threaded rod nut, and the rod-extracting power device is used for driving the screw rod to rotate such that the moving plate moves up and down along the lifting frame.

Preferably, the rod-extracting power device includes a screw motor, a screw driving wheel, and a screw driven wheel. The screw motor may be connected to the screw driving wheel, and the screw driving wheel may be connected to the screw driven wheel. The screw driven wheel may be coupled to the screw threaded rod.

According to an embodiment of the gas-charging and flanging machine of the present disclosure, a shock absorber can be produced by charging a gas into the workpiece and flanging the workpiece on the same machine such that production efficiency can be improved.

A part of the additional aspects and advantages of the present disclosure will be given in the description below. Another part will become apparent from the description below, or will be understood by the practice of the present disclosure.

DETAILED DESCRIPTION

The embodiments of the present disclosure are described in detail below, and examples of the embodiments are illustrated in the drawings, wherein the same or similar reference numerals indicate the same or similar elements or elements having the same or similar functions. The following embodiments described with reference to the accompanying drawings are exemplary only for explaining the present disclosure and should not be construed as limiting the present disclosure.

In the description of the present disclosure, it is to be understood that the terms “center”, “longitudinal”, “lateral”, “length”, “width”, “thickness”, “upper”, “lower”, “front”, “rear”, “left”, “right”, “vertical”, “horizontal”, “top”, “bottom”, “inner”, “outer”, “clockwise”, “counterclockwise”, etc. are based on the orientation or positional relationship shown in the drawings, and are merely for the convenience of the description of the present disclosure and simplification of the description. It does not indicate or imply that the device or component referred to has a specific orientation, and is constructed and operated in a specific orientation. Therefore, it should not be construed as a limitation of the present disclosure. Moreover, the terms “first” and “second” are used for descriptive purposes only and are not to be construed as indicating or implying a relative importance or implicitly indicating the number of technical features indicated. Thus, features defining “first” or “second” may include one or more of the described features either explicitly or implicitly. In the description of the present disclosure, the meaning of “plurality” is two or more unless specifically and specifically defined otherwise.

In the description of the present application, it should be noted that the terms “mounted”, “connected”, and “connected” are to be interpreted broadly unless otherwise explicitly defined. For example, the elements may be fixedly or detachably connected, connected as one piece, mechanically connected, electrically connected, communicating with each other, directly or indirectly connected through an intermediate medium, internal communication of two elements, or interaction of two elements. The specific meanings of the above terms in the present application can be understood by those skilled in the art on a case-by-case basis.

In the present disclosure, unless otherwise specifically define, a first feature is disposed “on” or “under” a second feature may include direct contact of the first and second features, and may also include indirect contact of the first and second features through additional features between them. Moreover, a first feature is disposed “on”, “over” and “above” a second feature may include the first feature being directly above and obliquely above the second feature, or merely indicating that the level of the first feature being higher than the second feature. A first feature is disposed “below”, “under” and “beneath” a second feature may include the first feature being directly below and obliquely below the second feature, or merely the level of the first feature being lower than the second feature.

The following description provides many different embodiments or examples for implementing different structures of the present disclosure. In order to simplify the description of the present disclosure, components and arrangement of some specific examples are described below. Of course, they are merely examples and are not intended to be limiting. In addition, the description may be repeated with reference numerals and/or reference characters in various examples, which are for the purpose of simplicity and clarity, and do not indicate the relationship between the various embodiments and/or arrangements discussed. Further, the following description provides various specific examples of materials and processes, but one of ordinary skill in the art may be aware that other processes and/or other materials may be used.

Referring toFIGS. 2, 12 and 13, a gas-charging and flanging machine10, according to an embodiment of the present disclosure, may include a sealed chamber13a. The gas-charging and flanging machine10can be used for carrying out, inside the sealed chamber13a, charging of a gas into a workpiece20and flanging of the workpiece20by spinning and pressing.

The gas-charging and flanging machine10, according to an embodiment of the present disclosure can improve the efficiency of production of a shock absorber by charging a gas into the workpiece20and flanging the workpiece20by spinning and pressing on the same machine.

The gas-charging and flanging machine10may include a gas-charging device13and a spin-and-press flanging device12. The gas-charging device13can be used for charging a gas into the workpiece20. The spin-and-press flanging device12can be used for flanging the workpiece20charged with the gas. The gas-charging device13may include a first clamping block131, a second clamping block132, a first clamping mechanism133, a second clamping mechanism134, and a gas intake nozzle13b. The first clamping mechanism133can be used for driving the first clamping block131to move, and the second clamping mechanism134can be used for driving the second clamping block132to move. The first clamping block131and the second clamping block132can be used for enclosing and forming the sealed chamber13a. The sealed chamber13amay be in communication with the gas intake nozzle13b. The sealed chamber13amay be used for housing the spin-and-press flanging device12.

The gas-charging and flanging machine10of the embodiment of the present disclosure realizes gas-charging and flanging the workpiece20on the same machine by installing the gas-charging device13and the spin-and-press flanging device12and producing a shock absorber, thereby improving production efficiency.

Referring toFIG. 1toFIG. 5, the gas-charging and flanging machine10of the embodiment of the present disclosure first charging a gas into the workpiece20, and then flanges the workpiece20to produce a shock absorber. The workpiece20may include a cylindrical oil storage cylinder21, a piston rod22, a guiding mechanism23and an oil seal24. The oil storage cylinder21may include a bottom end and a top end opposite to the bottom end. The bottom end may be a closed end. The piston rod22may be inserted into the oil storage cylinder21from the top end of the oil storage cylinder21and may be partially exposed out of the oil storage cylinder21. The top end of the oil storage cylinder21may be provided with the guiding mechanism23. The guiding mechanism23may be sleeved on the piston rod22. The guiding mechanism23may be placed between the oil storage cylinder21and the piston rod22. The oil seal24may be disposed at the top end of the oil storage cylinder21. The oil seal24may be used for sealing the top end of the oil storage cylinder21. The oil seal24may sleeve on the piston rod22and abut against the guiding mechanism23. After the workpiece20has been flanged by the gas-charging and flanging machine10, the top end of the oil storage cylinder21may be folded up to compress the oil seal24.

The gas-charging and flanging machine10may include a fixing device11, a spin-and-press flanging device12, a gas-charging device13, a rotary sealing device14, and a double screw pin pressure feeding device15. The fixing device11may be used for fixing the workpiece20. The gas-charging device13may be used for charging a gas into the workpiece20. The spin-and-press flanging device12may be used for flanging the workpiece20. The rotary sealing device14may be used for ensuring the gas sealing capacity during gas-charging and flanging of the workpiece20. The double screw pin pressure feeding device15may be used to control the lifting of the spin-and-press flanging device12.

Referring toFIG. 6, in the present embodiment, the fixing device11may include a base111, a mounting bracket112, a positioning block113, a swinging rod114, a pressing rod115, a cylinder116, and a connecting rod117. The base111may be used for mounting the workpiece20. The base111may include a bottom plate111a, and a cylindrical fixing position111bdisposed on the bottom plate111a. The fixing position111bmay be used for mounting the workpiece20. The mounting bracket112may be fixed to the bottom plate111a. The positioning block113may be fixed to the mounting bracket112and may be semi-annular in shape. The positioning block113may be located above the fixing position111b. The cylinder116may be used for driving the connecting rod117. The cylinder116may be fixed on the mounting bracket112and may be connected to the connecting rod117. The swinging rod114may be rotatably disposed on the mounting bracket112and may be L-shaped. The swinging rod114may include a first swinging rod114aand a second swinging rod114bconnected to the first swinging rod114a. One end of the first swinging rod114amay be connected with the connecting rod117and the second swinging rod114bmay be connected with the pressing rod115. The pressing rod115may be used for pressing the workpiece20on the positioning block113. Specifically, the second swinging rod114bmay be formed with a mounting groove114c. The pressing rod115may include a cylindrical abutting portion115a, and a cylindrical portion115bconnected to the abutting portion115a. The cylindrical abutting portion115amay be coaxially disposed with the cylindrical portion115b. The diameter of the abutting portion115amay be larger than the diameter of the cylindrical portion115b. The cylindrical portion115bmay be disposed in the mounting groove114c. A fixing nut11amay be attached to the cylindrical portion115b, and the second swing rod114bmay be located between the abutting portion115aand the fixing nut11a. When the gas-charging and flanging machine10is in operation, the bottom end of the workpiece20may be mounted on the fixed position111b. The positioning portion may be wrapped on an outer side of the workpiece20. The cylinder116can drive the connecting rod117to move forward so that the second swinging rod114bmay be pressed against the abutting portion115a, and the abutting portion115amay press the workpiece20against the positioning block113. After operation of the gas-charging and flanging machine10is completed, the cylinder116can drive the connecting rod117to move rearward so that the pressing rod115can release the workpiece20.

Referring toFIG. 7toFIG. 11, in the embodiment, the spin-and-press flanging device12may be a horizontal spin-and-press flanging device. The horizontal spin-and-press flanging device12may include a sealing wheel mounting disk121, a guiding mechanism122, and a spin-and-press mechanism123. The guiding mechanism122and the spin-and-press mechanism123may be mounted in the sealing wheel mounting disk121, and the guiding mechanism122can be used to straighten the workpiece20such that the workpiece20can be coaxially disposed with the spin-and-press flanging device12. The spin-and-press mechanism123may be used to spin the workpiece20and achieve the flanging of the workpiece20. The sealing wheel mounting disk121may be cylindrical in shape. A cylindrical machining chamber121amay be formed at the center of the sealing wheel mounting disk121. The guiding mechanism122may be disposed in the sealing wheel mounting disk121. The number of the guiding mechanism122may be three, and the three guiding mechanisms122may be evenly distributed along the circumferential direction of the sealing wheel mounting disk121. Each guiding mechanism122may include a guiding shaft122a, a guiding wheel122b, and a guiding bearing122c. The guiding shaft122amay be fixed in the sealing wheel mounting disk121, and the guiding wheel122bmay be sleeved on the guiding shaft122abetween the guiding wheel122band the guiding shaft122awith the guide bearing122cmounted in between.

In the present embodiment, the number of spin-and-press mechanism123may be three. The three spin-and-press mechanisms123may be evenly distributed along the circumferential direction of the sealing wheel mounting disk121. The guiding mechanism122may be sandwiched between two adjacent spin-and-press mechanisms123. The spin-and-press mechanism123may include a spin-and-press wheel123a, a first bearing123b, a second bearing123c, a compressing spring123d, an adjusting pad123e, a lock nut123f, and a spin-and-press shaft end cover123g. The spin-and-press wheel123amay include a spin-and-press portion123hand a spin-and-press shaft123iconnected to the spin-and-press portion123h. The spin-and-press portion123hmay have a substantially truncated cone shape. The spin-and-press portion123hmay include a first end123j, a second end123kopposite to the first end123j, and a spin-and-press surface1231connecting the first end123jand the second end123k. The spin-and-press surface1231may be formed with a linear spin-and-press section123mand a circular arc spin-and-press section123nconnected to the linear spin-and-press section123m. The front end of the spin-and-press shaft123imay be connected to the second end123k. The spin-and-press shaft123imay be disposed in a radial direction of the sealing wheel mounting disk121, and the first end123jof the spin-and-press portion123hmay be facing the center of the sealing wheel mounting disk121. The first bearing123b, the second bearing123c, and the compressing spring123dmay be sleeved on the spin-and-press shaft123i. The compressing spring123dmay be interposed between the first bearing123band the second bearing123c. The adjusting pad123emay be interposed between the first end123jof the spin-and-press portion123hand the first bearing123b. The locking nut123fmay be fixed to the rear end of the spin-and-press shaft123i. The first bearing123b, the second bearing123cand the compressing spring123dmay be located between the second end123kof the spin-and-press portion123hand the rear end of the spin-and-press shaft123i. The outer side surface of the sealing wheel mounting disk121may be fixed with the spin-and-press shaft end cover123g. The rear end of the locking nut123fand the spin-and-press shaft123imay be exposed to the outside through the spin-and-press shaft end cover123g.

The spin-and-press flanging device12may include two working processes, which may be respectively pre-flanging and flange-forming. During pre-flanging, the position of the workpiece20to be flanged may be located in a processing cavity121aof the sealing wheel mounting disk121. The three evenly disposed guiding wheel122bcan straighten the workpiece20. The sealing wheel mounting disk rotates at a high speed and presses down. The upper end of the oil storage cylinder21of the workpiece20spun and pressed into a slanted face by the circular arc spin-and-press section123nof the spin-and-press wheel123a. During flange-forming, the sealing wheel mounting disk121spins at high speed and presses at the same time. The flanging pressure may increase and force the spin-and-press shaft123ito move with the adjusting pad123eand the first bearing123b, and then move the compressing spring123d. At this time, the spin-and-press point changes from the circular arc spin-and-press section123nto the linear spin-and-press section123m. The linear spin-and-press section123mof the spin-and-press wheel123aspins, presses and bends the upper end of the oil storage cylinder21of the workpiece20into a flange portion211parallel to the linear spin-and-press section123m. The flange portion211presses the oil seal24of the oil storage cylinder21and seals the upper end of the oil storage cylinder21.

Referring toFIG. 31andFIG. 32, in another embodiment, the spin-and-press flanging device12may be a vertical spin-and-press flanging device. The vertical spin-and-press flanging device12may include a sealing wheel mounting disk121, a guiding mechanism122, and a spin-and-press mechanism123. The guiding mechanism122and the spin-and-press mechanism123may be mounted in the sealing wheel mounting disk121, and the guiding mechanism122can be used to straighten the workpiece20such that the workpiece20can be coaxially disposed with the spin-and-press flanging device12. The spin-and-press mechanism123may be used to spin the workpiece20and achieve the flanging of the workpiece20. The sealing wheel mounting disk121may be cylindrical in shape. A cylindrical machining chamber121amay be formed at the center of the sealing wheel mounting disk121. The number of the spin-and-press mechanism123may be three. The three spin-and-press mechanisms123may be spaced apart from each other in the axial direction of the sealing wheel mounting disk121. Each spin-and-press mechanism123may include a spin-and-press wheel123a, a first bearing123b, a second bearing, a compressing spring, an adjusting pad, a lock nut, and a spin-and-press shaft end cover. The spin-and-press wheel123amay include a spin-and-press portion123hand a spin-and-press shaft123iconnected to the spin-and-press portion123h. The spin-and-press portion123hmay be substantially in the shape of a circular platform. The outer peripheral surface of the spin-and-press portion123hmay be formed with a spin-and-press surface1231. The spin-and-press surface1231may be formed with the linear spin-and-press section123mand the circular arc spin-and-press section123nconnected to the linear spin-and-press section123m. The axial direction of the spin-and-press shaft123imay be parallel to the axial direction of the sealing wheel mounting disk121. The first bearing123b, the second bearing, and the compressing spring may be sleeved on the spin-and-press shaft123i. The compressing spring may be interposed between the first bearing123band the second bearing. The adjusting pad may be interposed between one end of the spin-and-press portion123hand the first bearing123b. The locking nut may be fixed to the upper end of the spin-and-press shaft123i. The first bearing123b, the second bearing and the compressing spring may be interposed between one end of the spin-and-press portion123hand the upper end of the spin-and-press shaft123i. The spin-and-press portion123hmay pass through the bottom surface of the sealing wheel mounting disk121and expose to the outside.

Referring toFIG. 12toFIG. 14, in the embodiment, the gas-charging device13may include a first clamping block131, a second clamping block132, a first clamping mechanism133and a second clamping mechanism134. The first clamping block131and the second clamping block132may be used for enclosing and forming the sealed chamber13a. The spin-and-press flanging device12may be received in the sealing chamber13a. The first clamping mechanism133may include a first clamping cylinder133a, a first cylinder block133b, and a first clamping block seat133c. The first clamping cylinder133amay be mounted on the first cylinder block133b. The first clamping cylinder133aand the first clamping block131may be respectively connected to the left and right ends of the first clamping block seat133c. The first clamping cylinder133adrives the first clamp block131to move through the first clamp block133c. The second clamping mechanism134may include a second clamping cylinder134a, a second cylinder block134band a second clamping block seat134c. The second clamping cylinder134amay be mounted on the second cylinder block134b. The left and right ends of the second clamping block seat134cmay be respectively connected to the second clamping block132and the second clamping cylinder134a. The second clamping cylinder134adrives the second clamping block132to move through the second clamping block seat134c. The second clamping block seat134cmay be provided with the gas intake nozzle13b. The gas intake nozzle13bcan communicate with the sealed chamber13a.

Specifically, the first clamping block seat133cmay be substantially in the shape of a cuboid. The left end of the first clamping block seat133cmay be connected to the first clamping cylinder133a. The right end of the first clamping block seat133cmay abut on the left side of the first clamping block131. Two first hooks133dmay be disposed at the right end of the first clamp block133c. The two first hooks133dmay be respectively fixed to the upper surface and the lower surface of the first clamp block133c. The surface on the left side of the first clamp block131may be formed with two corresponding first slots131a. Each of the first hooks133dmay be engaged in a first slot131a. The second clamping block seat134cmay be substantially in the shape of a cuboid. The left end of the second clamping block seat134cmay abut on the surface of the right side of the second clamping block132. The right end of the second clamping block seat134cmay be connected with the second clamping cylinder134a. The two second hooks134dmay be disposed at the left end of the second clamp block134c. The two second hooks134dmay be respectively fixed to the upper surface and the lower surface of the second clamp block134c. The surface of the right side of the second clamp block132may be formed with two corresponding second slots132a. Each of the second hooks134dmay be engaged in a second slot132a.

In the present embodiment, the upper surface of the second clamping block seat134cmay be provided with a gas intake nozzle13b. The second clamping block seat134cand the second clamping block132may together form a gas intake passage13c. The gas intake passage13c, the gas intake nozzle13band the sealed chamber13amay be in communication with each other. The left side of the first clamping block131may be formed with a first edge, and the left side of the second clamping block132may be formed with a second edge. The first edge may abut on the second edge to form the sealed chamber13a. The first edge and the second edge may be provided with sealing layers to ensure the sealing property when the first clamping block131and the second clamping block132enclose. The upper surface of each of the first clamping block131and the second clamping block132may be formed with a first semicircular groove. The two first semicircular grooves may be symmetrically arranged. The two first semicircular grooves can be enclosed to form a first coupling sleeve13d. The first coupling sleeve13dmay be used for engaging with the rotary sealing device14. The lower surfaces of the first clamping block131and the second clamping block132may be respectively formed with two second semicircular grooves. The two second semicircular grooves may be symmetrically disposed. The two second semicircular grooves may enclose to form a second coupling sleeve13e. The second coupling sleeve13emay be used for engaging the oil storage cylinder21of the workpiece20. Each of the first coupling sleeve13dand the second coupling sleeve13emay be provided with a seal ring13fto ensure the sealing of the coupling region.

The operating process of the gas-charging device13is: after the workpiece20is placed in position, the first clamping cylinder133adrives the first clamping block131through the first clamping block seat133c, and the second clamping cylinder134adrives the second clamping block134cthrough the second clamping block seat134c. The first clamping block131and the second clamping block132hold the workpiece20. The first clamping block131and the second clamping block132abut against each other to form the sealed chamber13a. Gas may be charged into the inner chamber of the workpiece through the gas intake nozzle along the gas intake passage13c.

Referring toFIGS. 15 and 16, in the present embodiment, the rotary sealing device14and the spin-and-press flanging device12may be disposed coaxially. The rotary sealing device14may include a fixing mechanism141and a rotating mechanism142. The rotating mechanism142can rotate relative to the fixing mechanism141. The rotating mechanism142may be coupled to the spin-and-press flanging device12to drive the spin-and-press flanging device12to rotate.

Specifically, the rotary sealing device14may be generally cylindrical in shape. A portion of the rotary sealing device14may extend into the sealed chamber13aof the gas-charging device13from the first coupling sleeve13d. The other portion of the rotary sealing device14may be exposed outside. The rotary sealing device14may include a gas-charging rotary sleeve141b, a rear end cover141a, an outer rotary sealing cover141c, a spin-and-press main shaft142a, a transition flange142b, and a cylinder-pressing connecting rod14a. The gas-charging rotary sleeve141bmay be substantially cylindrical in shape and has a rear end. The cover141aand the outer rotary sealing cover141cmay be respectively fixed to the upper and lower ends of the gas-charging rotary sleeve141b. The spin-and-press flanging device12may be located below the outer rotary sealing cover141c. The transition flange142bmay be interposed between the spin-and-press flanging device12and the outer rotary sealing cover141c. The spin-and-press main shaft142amay be inserted through the gas-charging rotary sleeve141b, and the spin-and-press main shaft142amay be fixedly connected with the transition flange142b. The transition flange142bmay be fixedly connected with the spin-and-press flanging device12. The cylinder-pressing connecting rod14amay be disposed in the gas-charging rotary sleeve141b. The cylinder pressing connecting rod14amay be coaxially disposed with the gas-charging rotary sleeve141b. A following sealing ring seat14bmay be disposed between the gas-charging rotary sleeve141band the spin-and-press main shaft142a. A first rotating and pressing sealing ring14fmay be disposed on the following sealing ring seat14b. A first rotary bearing14cmay be disposed between the gas-charging rotary sleeve141band the spin-and-press main shaft142a. The first rotary bearing14cmay be located above the following sealing ring seat14b. A second rotary bearing14emay be disposed between the spin-and-press main shaft142aand the cylinder-pressing connecting rod14a. A spacing sleeve14dmay be disposed between the spin-and-press main shaft142aand the cylinder-pressing connecting rod14a. A first inner sealing ring seat142cand a second inner sealing ring seat142dmay be interposed between the spin-and-press main shaft142aand the cylinder-pressing connecting rod14a. The first inner sealing ring seat142cmay be disposed on the transition flange142b, and the second inner sealing ring seat142dmay be disposed on the first inner sealing ring seat142c. A second rotating and pressing sealing ring14gmay be interposed between the first inner sealing ring seat142c, the second inner sealing ring seat142dand the cylinder pressing connecting rod14a. The second rotary bearing14emay be located above the second inner sealing ring seat142d. The fixing mechanism141may include the rear end cover141a, the gas-charging rotary sleeve141b, and the outer rotary sealing cover141c. The rotation mechanism142may include the spin-and-press main shaft142a, the transition flange142b, the first inner sealing ring seat142cand the second inner sealing ring seat142d.

The operating process of the rotary sealing device14is: when the gas-charging device13is charging a gas into the workpiece20, the first clamping cylinder133aand the second clamping cylinder134arespectively drive the first clamping block131and the second clamping block132to move and abut each other and clamp on each other. The spin-and-press main shaft142adrives the spin-and-press flanging device12to rotate at a high speed and press down through the transition flange142b. The rear end cover141a, the gas-charging rotary sleeve141b, and the outer rotary sealing cover141cmay be connected together without rotating. The spin-and-press main shaft142a, the transition flange142b, the first inner sealing ring seat142c, and the second inner sealing ring seat142drotate together to ensure that the spin-and-press main shaft142acan rotate through the first rotary bearing14cand the second rotary bearing14e.

In the present embodiment, the gas-charging and flanging machine10may further include a mounting plate10aand a resilient member10bthat connects the mounting plate10aand the rear end cover141a. The resilient member10bmay be disposed in a direction parallel to the axial direction of the spin-and-press flanging device12. One end of the resilient member10bmay be fixedly coupled to the mounting plate10a, and the other end of the resilient member10bmay be coupled to the rear end cover141a. Preferably, the resilient member10bmay be a spring, and the number of spring may be two. The two springs may be respectively disposed on the left and right sides of the axial direction of the spin-and-press flanging device12. The rotary sealing device14may be fixed on the mounting plate10a. The spin-and-press flanging device12may be fixed on the rotary sealing device14. The rotary sealing device14may be disposed coaxially with the spin-and-press flanging device12. The rotary sealing device14, the spin-and-press flanging device12, and the gas-charging device13may be axially symmetrical. The first clamping block seat133cmay be provided with a first axial position-limiting member10c, and the second clamping block seat134cmay be provided with a second axial position-limiting member10d. The first axial position-limiting member10cand the second axial position-limiting member10dmay be used for limiting axial movement of the spin-and-press flange device12. The first axial position-limiting member10cand the second axial position-limiting member10dmay be substantially in the shape of the Chinese character “”. The first axial position-limiting member10cmay include a first fixing portion10e, a first engaging portion10f, and a first extending portion10gconnecting the first fixing portion10eand the first engaging portion10f. The second axial position-limiting member10dmay include a second fixing portion10h, a second engaging portion10i, and a second extending portion10jconnecting the second fixing portion10hand the second engaging portion10i. The first axial position-limiting member10cmay be axially symmetrical with respect to the second axial position-limiting member10d. The first fixing portion10emay be fixedly connected to the first clamping block seat133c, and the second fixing portion10hmay be fixedly connected to the second clamping block seat134c. The first engaging portion10fand the second engaging portion10ican be used for engaging the rear end cover141a, thus achieving axial position limitation of the spin-and-press flanging device12.

When the gas-charging device13is in operation, the first clamping block131and the second clamping block132form the sealed chamber13a. Due to an increase in pressure, there is an increase of the force of the spin-and-press flanging device12needed to overcome the resilient member10b. The first axial position-limiting member10cand the second axial position-limiting member10dmay engage with the rear end cover141a, thereby limiting the spin-and-press flanging device12in the axial direction, and the spin-and-press flanging device12cannot move upwards.

Referring toFIG. 17toFIG. 19, in the present embodiment, the double screw rod pressure feeding device15may include a feeding motor151, a first transmission mechanism152, a second transmission mechanism153, a first threaded rod154, a second threaded rod155, a first threaded rod nut156, a first threaded rod nut seat157, a second threaded rod nut158, a second threaded rod nut seat159, a lifting plate15a, and a fixing plate15b. The first transmission mechanism152may include a first driving pulley152a, a first driven pulley152b, and a first belt152cconnecting the first driving pulley152aand the first driven pulley152b. The first driven pulley152bmay be connected to the first threaded rod154. The second transmission mechanism153may include a second driving pulley153a, a second driven pulley153b, and a second belt153cconnecting the second driving pulley153aand the second driven pulley153b. The second driven pulley153bmay be connected with the second threaded rod155. The feeding motor151may be used for driving the first driving pulley152aand the second driving pulley153a. The first driving pulley152amay be located above the second driving pulley153a. The first driving pulley152amay be coaxially disposed with the second driving pulley153a. The first threaded rod154and the second threaded rod155may be used for driving the lifting plate15ato move up and down. The first threaded rod nut seat157and the second threaded rod nut seat159may be fixed on the lifting plate15a. The first threaded rod154may be connected to the first threaded rod nut seat157by the first threaded rod nut156, and the second threaded rod155may be connected with the second threaded rod nut seat159by the second threaded rod nut158. The bottom surface of the lifting plate15amay be mounted with the rotary sealing device14and the spin-and-press flanging device12. The spin-and-press flanging device12may be located below the rotary sealing device14. The first threaded rod154and the second threaded rod155may be respectively located on the two sides of the axis of the spin-and-press flanging device. The first threaded rod154may be parallel to the second threaded rod155. The first threaded rod nut seat157may be disposed adjacent to the left side of the lifting plate15a, and the second threaded rod nut seat159may be disposed adjacent to the right side of the lifting plate15a. The lifting plate15amay be disposed parallel with the fixing plate15b. The feeding motor151, the first transmission mechanism152and the second transmission mechanism153may be mounted on the top surface of the fixing plate15b. The two sides of the first threaded rod154and the second threaded rod155may pass through the fixing plate15band the lifting plate15a, respectively. Preferably, the first driving pulley152aand the second driving pulley153amay be in the form of a unitary structure. In this way, the first threaded rod154and the second threaded rod155can balance the downward force, thereby making transmission more stable.

The operating process of the double threaded rod pressure feeding device15is: the feeding motor151rotates to drive the first driving pulley152aand the second driving pulley153a. The first driving pulley152adrives the first driven pulley152bthrough the first belt152c. The first driven pulley152bdrives the first threaded rod154. The first threaded rod154and the first threaded rod nut156convert rotary motion into linear motion. The second driving pulley153adrives the second driven pulley153bthrough the second belt153c. The second driven pulley153bdrives the second threaded rod155. The second threaded rod155and the second threaded rod nut158convert rotary motion into linear motion. The left and right sides synchronously move up and down so that the lifting plate15acan move up and down.

Referring toFIG. 20toFIG. 22, in the present embodiment, the gas-charging and flanging machine10may further include a screw assembly16. The screw assembly16may include a driving mechanism161, a screw rod162, a universal joint163, and a screw head164. The driving mechanism161may be used to drive the screw rod162to rotate. The driving mechanism161may include a screw rod rotating motor161a, a screw rod driving gear161b, and a screw rod driven gear161c. The screw rod rotating motor161amay be connected with the screw rod driving gear161b. The screw rod driving gear161bmay be engaged with the screw rod driven gear161c. The screw rod162may include a first connecting end162aand a second connecting end162bopposite to the first connecting end162a. The first connecting end162aof the screw rod162may be connected with screw rod driven gear161c. The screw rod162may be provided with the universal joint163. The universal joint163may be located between the first connecting end162aand the second connecting end162b, and the universal joint163may be disposed adjacent to the second connecting end162b. The second connecting end162bof the screw rod162may be fixedly connected to the screw head164. A rotating sleeve16amay be sleeved on the first connecting end162aof the screw rod162. A rotating bearing16bmay be disposed between the rotating sleeve16aand the screw rod162. The driving mechanism161may be mounted on the connecting plate16c. The screw rod driving gear161band the screw rod driven gear161cmay be located on the top surface of the connecting plate16c. The body of the screw rod rotating motor161amay be located below the connecting plate16c. The bottom surface of the connecting plate16cmay be provided with a motor adjusting plate16d, and the body of the screw rod rotating motor161amay be fixed on the motor adjusting plate16d. The driving shaft of the screw rod motor161amay pass through the connecting plate16cso as to connect with the screw rod driving gear. The screw rod162may pass through the connecting plate16cso as to connect with the screw rod driven gear161c. The universal joint163and the screw head164may be located below the connecting plate16c, and the screw head164may be formed with internal screw threads that connect with the screw threads of the piston rod22of the workpiece20.

The screw rod rotating motor161adrives the screw rod162to rotate through the screw rod driving gear161band the screw rod driven gear161c, and then drives the screw head164and the screw threads on the workpiece20to screw together through the universal joint163. In this way, the screw head164may achieve flexible connection through the universal joint163in both the X and Y directions, thereby ensuring that the screw head164can be screwed into the workpiece20even when the screw rod162may not be concentric with the screw threads of the workpiece20.

Referring toFIG. 23toFIG. 27, in the present embodiment, the gas-charging and flanging machine10may further include a rod-extracting mechanism17. The rod-extracting mechanism17may include a rod-extracting power device171, a lifting frame172, a moving plate173, a screw threaded rod174, and a screw threaded rod nut175. The screw assembly16may be mounted on the moving plate173, and the moving plate173may be slidably mounted on the lifting frame172. The screw threaded rod174and the moving plate173may be connected by the screw threaded rod nut175. The rod-extracting power device171may be used to drive the screw threaded rod174to rotate, thereby realizing up and down movement of the moving plate173along the lifting frame172. The rod-extracting power device171may include a screw motor171a, a screw driving wheel171b, and a screw driven wheel171c. The screw motor171amay be connected to the screw driving wheel171b, and the screw driving wheel171bmay be connected to the screw driven wheel171c. The screw driven wheel171cmay be coupled to the screw threaded rod174. The rod-extracting mechanism17may be mounted on the lifting plate15a. The lifting frame172may include two opposite vertical side plates172a. The two vertical side plates172amay be fixed on the lifting plate15a. Each vertical side plate172amay be provided with a wiring rail172b. The moving plate173may be slidably mounted between the two wiring rails172b. One end of the screw threaded rod174may be fixed to the top end of the lifting frame172, and the other end of the screw threaded rod174may be connected to the screw driven wheel171c.

When the gas-charging device13needs to charge a gas into the workpiece20, the piston rod22of the workpiece20needs to be pulled up first so that it is fixed between the guiding mechanism23of the piston rod22and the oil storage cylinder21, forming a gap for gas intake. The process of pulling the piston rod22by the gas-charging and flanging machine10may be as follows: First, the screw motor171adrives the screw threaded rod174to rotate through the screw driving wheel171band the screw driven wheel171c. The rotary motion can be converted to linear motion by the screw threaded rod nut175, and the moving plate173can be moved downwards, thereby moving the screw rod162downwards. Then, the screw rod rotating motor161adrives the screw rod162to rotate through the screw rod driving gear161band the screw rod driven gear161c, and drives the screw head164and the piston rod22of the workpiece20to screw together through the universal joint163. The screw motor171amay be reversed and drive the moving plate173to move upwards, thereby lifting the piston rod22on the workpiece20.

Referring toFIG. 28, in the present embodiment, the gas-charging and flanging machine10may further include a rod-pressing power device18. The rod-pressing power device18may include a pressing cylinder181, a pressing connecting rod182, and a pressing rod183. The pressing cylinder181may be mounted on the lifting frame172. After the piston rod22is pulled up to charge a gas, the cylinder rod of the pressing cylinder181extends and presses downwards. The cylinder rod of the pressing cylinder181abuts against the pressing connecting rod182, and the pressing rod183abut against the oil seal24of the oil storage cylinder21of the workpiece20. The oil seal24abuts against the guiding mechanism23of the oil storage cylinder21, thereby pressing the guiding mechanism23into the oil storage cylinder21.

Referring toFIG. 29andFIG. 30, in the present embodiment, the gas-charging and flanging machine10may further include a reciprocating force measuring mechanism19. The reciprocating force measuring mechanism19may include a load sensor191, a sensor head192and a sensor push rod193. The sensor push rod193may be disposed on the screw rod driven gear161c. The first connecting end162aof the screw rod162may be concavely formed with a conical groove162cin the axial direction. The sensor push rod193can be facing the conical groove162c. The sensor head192may be located directly above the sensor push rod193. The load sensor191may be electrically coupled to the sensor head192, and the load sensor191may be positioned directly above the sensor head192.

After gas-charging and flanging by the gas-charging and flanging machine10is completed, the screw rod162may be withdrawn from the screw threads of the workpiece20. The piston rod22moves upwards due to pressure, and the piston rod22may press against the screw rod162to drive the screw rod driven tooth161cand the sensor push rod193to move upwards, and reach the sensor head192such that the load sensor191can read the pushing force data of the piston rod22.

The operating process of the gas-charging and flanging machine10of the present disclosure is: first charging a gas, and then flanging the workpiece20, and finally measuring the pushing force of the piston rod22. The gas-charging device13and the spin-and-press flanging device12may be completed at the same working station. Both gas-charging and flanging can be completed in the sealed chamber13a, such that the oil seal24cannot be damaged, thereby ensuring the sealing performance of the produced shock absorber.

In the description of the present specification, the terms “one embodiment”, “some embodiments”, “illustrative embodiment”, “example”, “specific example”, or “some examples”, etc. refer to the combination of characteristic, structure, material or special feature described in the embodiments or examples that may be included in at least one embodiment or example of the disclosure. In the present specification, the schematic representation of the above terms does not necessarily mean the same embodiment or example. Furthermore, the characteristic, structure, material, or special feature described may be combined in a suitable manner in any one or more embodiments or examples.

Although certain embodiments of the disclosure have been shown and described, a person of ordinary skill in the art will understand that various modifications, changes, substitutions and variations of the embodiments may be made without departing from the scope of protection. The scope of protection is defined by the claims and their equivalents.