Workpiece orientation mechanism

A workpiece orientation mechanism includes: a driving device including a transmission motor and a controller which are connected with each other via signal, the transmission motor defining an axial direction; a rotating seat, combined with the transmission motor, and capable of being driven to rotate by the transmission motor; an orientation head disposed on the rotating seat to rotate synchronously with the rotating seat, wherein the orientation head is capable of moving along the axial direction relative to the rotating seat, one end of the orientation head includes a mounting head, and a blocking member is disposed on the orientation head; reset means, arranged between the rotating seat and the orientation head, and positioning the orientation head at a predetermined position; and a sensor facing the blocking member, wherein the sensor is signally connected with the controller.

BACKGROUND

Field of the Invention

The present invention relates to a processing device, and more particular to a workpiece orientation mechanism.

Description of Related Art

The existing workpiece engraving technology is to engrave the customer's required trademarks, numbers, specifications and other graphics on the designated positions of the workpiece. However, there are many types of products, and the engraving needs of customers have changed greatly. The current method of adjusting and correcting angles on the old special equipment that requires manpower takes a long time, so there is a kind of workpiece orientation mechanism in the industry. The conventional workpiece orientation mechanism can refer to the Chinese utility Patent No. CN211163164U, which discloses a clamping mechanism and a grinding mechanism. The clamping mechanism is adjacent to the grinding mechanism and includes a rotating rod. The middle section of the rotating rod includes a fixed block. A rotating disk is rotatably connected between the fixed block and the rotating rod. The rotating rod includes a rotating handle at one end and a clamping block at the other end. The clamping block is used to clamp the workpiece to be processed. The left and right sides of the rotating disk are symmetrically provided with sliding notches and springs disposed in the sliding notches. One end of the each of the springs is against the sliding notch, and the other end is fixedly connected with a limit pin. The front end of the fixed block is provided with a limit slot matched with the limit pin, and one side of the limit pin is provided with a circular arc bevel.

When the user turns the rotating handle, the arc bevel of the limit pin is squeezed, and the spring is compressed by the limit pinto contract into the sliding notch, until the limit pin is reinserted into the limit slot on the other side, so that the tool is rotated 180 degrees to facilitate the grinding mechanism to grind the other side of the workpiece.

Although the aforementioned clamping mechanism can rotate the workpiece to fix the workpiece at a specific angle, this case uses a limit pin to fix the angle of the workpiece, and only one side of the limit pin is provided with an arc bevel, so that the rotating rod can only rotate in one direction. In addition, the clamping mechanism achieves the purpose of orientation through the cooperation of the limit pin and the limit slot, so the orientation angle is only two angles of 0 degrees and 180 degrees, and cannot be fine-tuned.

SUMMARY

The present invention provides an orientation mechanism capable of accurately positioning the processing angle of a workpiece.

To achieve the above object, a workpiece orientation mechanism provided by the invention comprises:a driving device including a transmission motor and a controller which are connected with each other via signal, the transmission motor defining an axial direction;a rotating seat, combined with the transmission motor, and capable of being driven to rotate by the transmission motor;an orientation head disposed on the rotating seat to rotate synchronously with the rotating seat, wherein the orientation head is capable of moving along the axial direction relative to the rotating seat, one end of the orientation head includes a mounting head, and a blocking member is disposed on the orientation head;reset means, arranged between the rotating seat and the orientation head, and positioning the orientation head at a predetermined position;a sensor facing the blocking member, wherein the sensor is signally connected with the controller;wherein, when a workpiece abuts the mounting head to move the orientation head and the blocking member along the axial direction, the sensor transmits a driving signal to the controller to drive the transmission motor, and the transmission motor drives the rotating seat, the orientation head, and the blocking member to rotate by a rotation angle, so that the mounting head engages the workpiece, meanwhile, the reset means causes the orientation head and the blocking member to return along the axial direction, and makes the sensor send the driving signal to the controller to stop the transmission motor, and the transmission motor sends a feedback parameter to the controller to obtain the rotation angle, and the controller calculates a compensation angle based on the rotation angle and a preset angle, and then drives the transmission motor to rotate by the compensation angle.

Accordingly, the present invention uses the orientation head to move along the axial direction to drive the blocking member to approach or move away from the sensing unit of the sensor, so as to make the sensing unit send a driving signal to the controller to turn on of turn off the transmission motor, so that the workpiece is smoothly sleeved on the mounting head. When the transmission motor is activated, a feedback parameter is sent to the controller to know a rotation angle of the transmission motor, and the controller receives the preset angle input from the outside and calculates the compensation angle according to the rotation angle and the preset angle, and then controls the transmission motor to rotate according to the compensation angle, so that the mounting head rotates to preset angle to accurately position the angle of workpiece.

DETAILED DESCRIPTION

Referring toFIGS.1-8, a first embodiment of the workpiece orientation mechanism disclosed in the present invention comprises:

A driving device10, a rotating seat20, an orientation head30, a blocking member40, a mounting head50, a sensor60, and an elastic member70.

The driving device10includes a transmission motor11and a controller12which are connected with each other via signal. The transmission motor11is mounted on a motor fixing base13and includes a rotating shaft111which defines an axial direction X. In this embodiment, the controller12includes an absolute encoder.

The rotating seat20includes a penetrating hole20A penetrating along the axial direction X, the rotating shaft111is inserted through and locked in the penetrating hole20A, so that the rotating shaft111drives the rotating seat20to rotate. The rotating seat20includes an elastic member fixing portion20B. One end of the elastic member70is fixed to the elastic member fixing portion20B. In this embodiment, the rotating seat20includes a first sleeve21and a first orientation member22.

The first sleeve21is sleeved on the rotating shaft111, the penetrating hole20A penetrates the first sleeve21, so that the rotating shaft111drives the first sleeve21to rotate. The first sleeve21includes a first side surface211, the first side surface211is the side facing away from the motor fixing base13. The first side surface211includes a flange212, and the flange212surrounds a first accommodating groove213which communicates with the penetrating hole20A, and the diameter of the first accommodating groove213is larger than that of the penetrating hole20A, thereby forming an annular step surface215at the junction between the first accommodating groove213and the penetrating hole20A for one end of the elastic member70to abut against. In this embodiment, the first accommodating groove213is the elastic member fixing portion20B.

The first orientation member22includes a body225coaxially arranged with the first sleeve21, an elastic member accommodating hole221, two through holes223, and two openings222. The body225has a cylindrical shape and is fixedly combined with the first side surface211of the first sleeve21. The elastic member accommodating hole221penetrates the body225along the axial direction X, the two through holes223are formed at two ends of the body225in the axial direction X, and the two openings222are respectively formed at two radial ends of the body225and communicate with the elastic member accommodating hole221.

The orientation head30is disposed on the rotating seat20and can rotate synchronously with the rotating seat20. The orientation head30includes a locking portion30A, a sliding portion31, a blocking-member coupling portion30B, and an elastic member receiving portion30C. The locking portion30A is a cylindrical body and extending along the axial direction X, and the two ends of the locking portion30A along the axial direction X are respectively a first end31A and a second end32A. The first end31A of the locking portion30A extends from the through hole223and protrudes from the first orientation member22, and the first end31A is provided with the mounting head50. The sliding portion31is formed at the second end32A of the locking portion30A and is generally a rectangular sheet body. The sliding portion31includes a front side surface311and a rear side surface312facing away from the front side surface311. The front side surface311is connected to the second end32A of the locking portion30A. The sliding portion31is disposed in the elastic member accommodating hole221, the blocking-member inductor coupling portion30B is used for coupling the blocking member inductor40, and the blocking-member coupling portion30B is two protrusions32at two opposite sides of the sliding portion31. The two protrusions32are located on the radial extension line of the locking portion30A and respectively protrude from the openings222on two radial sides of the first orientation member22. The two protrusions32each include a first locking hole321. The elastic member receiving portion30C is used to fix the other end of the elastic member70. The elastic member receiving portion30C is a second accommodating groove313located on the rear side surface312.

The mounting head50is used to fix a workpiece80. The workpiece80includes a groove81. The mounting head50is inserted into the groove81. In this embodiment, the mounting head50is a joint, the workpiece80is a sleeve which is sleeved on the joint, the groove81is a square groove, and the mounting head50is a square joint, so allow the workpiece to rotate synchronously with the joint.

In this embodiment, the first end31A of the locking portion30A includes a receiving slot33, the receiving slot33is a square slot, the mounting head50is disposed in the receiving slot33, and a bolt34is inserted in the mounting head50to lock the mounting head50in the receiving slot33, so that the user can replace the mounting head50for different types of workpieces80.

The blocking member40is combined with the blocking-member coupling portion30B of the orientation head30so as to be able to move along the axial direction X with the orientation head30. In this embodiment, the blocking member40is an annular plate sleeved on the first orientation member22. The blocking member40includes two second locking holes41which are aligned with the two first locking holes321, and a bolt42is inserted through each pair of the first locking holes321and the second locking holes41.

The sensor60is a distance sensor and includes a sensing unit61that faces the blocking member40, and the sensing unit61is signally connected to the controller12. In this embodiment, the driving device10further includes a supporting plate62which is locked to the motor fixing base13, and the supporting plate62includes a first plate section621, a second plate section622, and a third plate section623which are connected to each other in sequence. The extension directions of the first plate section621and the second plate section622are generally perpendicular, a first angle θ1 is formed between the first plate section621and the second plate section622, and the first angle θ1 is 90 degrees. The extension directions of the second plate section622and the third plate section623are generally perpendicular, a second angle θ2 is formed between the second plate section622and the third plate section623, and the second angle θ2 is 90 degrees. The first plate section621is locked to the motor fixing base13, the third plate section623faces the blocking member40, and the sensor60is combined with the third plate section623.

The elastic member70is disposed in the elastic member accommodating hole221, the elastic member70is a spring. One end of the elastic member70extends into the first accommodating groove213and abuts against the annular step surface215, another end of the elastic member70abuts in the second accommodating groove313to drive the orientation head30to move along the axial direction X.

In this embodiment, the elastic member accommodating hole221includes two opposite inner surfaces224which are respectively formed on two radial sides of the body225. The two inner surfaces224are flat surfaces. The sliding portion31includes a top fixing side portion314and a bottom fixing side portion315on opposite sides thereof. The top fixing side portion314and the bottom fixing side portion315are located along the radial extension of the locking portion30A, the top fixing side portion314and the bottom fixing side portion315are flat surfaces, and respectively abut against the corresponding inner surfaces224, so that the orientation head30can rotate synchronously with the first orientation member22and can move along the axial direction X in the first orientation member22.

In another embodiment, when the controller12applied to the transmission motor11includes an incremental encoder, the invention further includes an angle sensor unit90, and the angle sensor unit90includes an angle sensor91and an angle sensing member92. The angle sensor91is disposed on the second plate section622and is an optical sensor. The angle sensor91is signally connected to the controller12, and includes a light projecting unit911and a light receiving unit912. The light projecting unit911and the light receiving unit912are separated by a distance to form a shielding space913. The angle sensing member92is a rectangular plate disposed between the first sleeve21and the first orientation member22. The first sleeve21is recessed with a receiving groove214on the first side surface211, and the angle sensing member92is locked in the receiving groove214and can rotate with the rotating seat20. When the angle sensing member92passes through the shielding space913, the angle sensor91is driven to obtain an initial angle; to further illustrate, the angle sensor91detects the angle at which the angle sensing member92enters the shielding space913and the angle at which it leaves the shielding space913, so as to calculate the initial angle.

It is worth mentioning that in other preferred embodiments, the support plate62may not be provided, and the angle sensor91and the sensor60or one of the foregoing two can be disposed on the machine equipment near the transmission motor11as long as they can correspond to the angle sensing member92and the blocking member40respectively.

In other preferred embodiments, please refer toFIG.11, which further includes a spacer63, which is fixed between the first plate section621and the motor fixing base13, so as to adjust the distance between the sensor60and the blocking member40.

In the preferred embodiment, please refer toFIG.11, a reducer14is additionally installed between the transmission motor11and the rotating seat20, and a reducer base15is also provided and combined with the motor fixing base13, and the reducer14and the transmission motor11are disposed on the reducer base15.

The second embodiment of the workpiece orientation mechanism of the present invention, please refer toFIGS.9to10B, comprises:

A driving device10, a rotating seat20, an orientation head30, a blocking member40, a mounting head50, a sensor60and an elastic element70.

The driving device10includes a transmission motor11and a controller12which are connected with each other via signal. The transmission motor11is mounted on a motor fixing base13and includes a rotating shaft111which defines an axial direction X. In this embodiment, the controller12includes an absolute encoder.

The rotating seat20includes a penetrating hole20A penetrating along the axial direction X, the rotating shaft111is inserted through and locked in the penetrating hole20A, so that the rotating shaft111drives the rotating seat20to rotate. The rotating seat20includes an elastic member fixing portion20B. One end of the elastic member70is fixed to the elastic member fixing portion20B. In this embodiment, the rotating seat20includes a second sleeve25and a second orientation member26.

The second sleeve25is sleeved on the rotating shaft111, and the penetrating hole20A penetrates the second sleeve25. The second sleeve25includes a sleeve portion251, a body portion252, and a first column253. The body portion252is a circular plate. The sleeve portion251and the first column253are both cylindrical and are respectively connected to two opposite side of the body portion252along the axial direction X, and the sleeve portion251is sleeved on the rotating shaft111, so that the rotating shaft111drives the second sleeve25to rotate. The body portion252includes a second side surface2521which is the side facing away from the motor fixing base13, the first column253is connected to the second side surface2521, the first column253is the elastic member fixing portion20B, and one end of the elastic member70is sleeved on the first column253.

The second orientation member26includes a first side plate261, a bottom plate262, and a second side plate263which are connected to one another in sequence. The bottom plate262is located between the first side plate261and the second side plate263, a vertical angle is formed between the first side plate261and the bottom plate262and between the bottom plate262and the second side plate263, the first side plate261and the second side plate263are parallel to each other and face each other, so that the second orientation member26is generally U-shaped. The first side plate261, the bottom plate262, and the second side plate263define an accommodating space264, and the first column253penetrates the first side plate261and extends into the accommodating space264. The first side plate261is locked and combined with the body portion252, and the second orientation member26can rotate synchronously with the second sleeve25. The second side plate263includes amounting head hole265, and the second side plate263includes a mounting surface2631which faces the first side plate261.

The orientation head30is disposed on the second orientation member26of the rotating seat20and rotates synchronously with the rotating seat20. The orientation head30includes a locking portion30A, a blocking-member coupling portion30B, and an elastic member receiving portion30C. The locking portion30A is a square column and includes a first end31A and a second end32A opposite to each other. The first end31A of the locking portion30A extends out of the second orientation member26via the mounting head hole265. The first end31A is provided with the mounting head50. The blocking-member coupling portion30B is provided for coupling the blocking-member40and located at the second end32A. The blocking-member coupling portion30B is a locking block36extending from one side of the locking portion30A, and the elastic member receiving portion30C is located at the second end32A. Another end of the elastic member70is fixed to the elastic member receiving portion30C, and the elastic member receiving portion30C is a second column37protruding from the second end32A.

In this embodiment, the first end31A of the locking portion30A includes a receiving slot33which is a square slot, the mounting head50is a square joint and disposed in the receiving slot33, and a bolt34is inserted through the mounting head50to lock the mounting head50in the receiving slot33, so that the user can replace the mounting head50for different types of workpieces80.

The mounting head50is used to fix a workpiece80. The workpiece80includes a groove81. The mounting head50is inserted into the groove81. In this embodiment, the mounting head50is a joint, the workpiece80is a sleeve which is sleeved on the joint, the groove81is a square groove, and the mounting head50is a square joint, so allow the workpiece to rotate synchronously with the joint.

The blocking member40is combined with the blocking-member coupling portion30B so as to be able to move along the axial direction X with the orientation head30. In this embodiment, the blocking member40is a rectangular plate and includes a locking section45and a shielding section46connected to each other, the locking section45is attached and locked to the locking block36, and the shielding section46faces the sensor60.

The sensor60is locked to the mounting surface2631. The sensor60is a distance sensor, and includes a sensing unit61signally connected to the controller12, and the shielding section46faces the sensing unit61.

The elastic member70is disposed in the accommodating space264, the elastic member70is a spring, one end of the elastic member70is sleeved on the first column253, and another end of the elastic member70is sleeved on the second column37to drive the orientation head30to move along the axial direction X.

Preferably, please refer toFIG.14, the workpiece orientation mechanism of the present invention is further mounted on a processing machine Z.

In other embodiments, please refer toFIGS.12A to13D, the mounting head50can be of various types. Please refer toFIGS.12B to12D, the mounting head50is the form of a column, and in the shape of a keyway, a slotted shaft, a spline or a gear please refer toFIGS.13A to13D, the side of the mounting head50facing the workpiece80includes an assembling groove51, and the assembling groove51can be in the types of keyway, slotted shaft, spline or gear.

The above is the configuration description of the main components of each embodiment of the present invention. As for the operation mode and effect of the present invention, please refer to the description as follows:

When the controller12includes an absolute encoder, the actuation method of the present invention includes a step sleeving and a step of orienting:

For the step of sleeving, please refer toFIGS.3to6. First, the workpiece80is approached to the front of the mounting head50along the axis X using the method of an automated production line, a robot or a user's hand-held. Due to the groove81is a square groove, and the mounting head50is a square joint, the groove81and the mounting head50must be set at exactly the same angle in order to fit the workpiece80on the mounting head50. When the angle of the groove81does not match the angle of the mounting head50, please refer toFIG.3-4, the workpiece80will abut against the mounting head50and drive the orientation head30to move backward along the axial direction X, then the blocking member40fixed to the orientation head30is caused to move away from the sensing unit61. When the distance between the blocking member40and the sensing unit61changes, the sensing unit61is triggered to send a driving signal to the controller12to activate the transmission motor11. When the transmission motor11is activated, the rotating shaft111drives the rotating seat20and the orientation head30to rotate. When the orientation head30rotates until the angle of the mounting head50matches the workpiece80, please refer toFIGS.5-6, the kinetic energy of the elastic member70pushes the orientation head30to move forward along the axial direction X and reset, so that the mounting head50disposed on the orientation head30extends into the groove81to complete the sleeving operation of the workpiece80. At this time, the blocking member40approaches the sensing unit61again, triggering the sensing unit61to send a driving signal to the controller12again to stop the transmission motor11from operating.

In the step of orientating, when the transmission motor11rotates, a feedback parameter is sent to the controller12to know the rotation angle in the step of sleeving. The controller12receives the external parameters input by the user from the outside. The external parameter is a preset angle. The controller12calculates the compensation angle according to the rotation angle and the preset angle, and then controls the transmission motor11to rotate according to the compensation angle, so that the mounting head50rotates to the preset angle to accurately position the angle of the workpiece80.

When the controller12includes an incremental encoder, there is an additional reset step before the sleeving step. Please refer toFIGS.8,15to16, the controller12drives the transmission motor11to rotate to further rotate the angle sensing member92to the shielding space913of the angle sensor91to obtain the initial angle.

In the orientating step, the compensation angle is calculated by referring to the initial angle, the rotation angle and the preset angle.

Accordingly, the present invention uses the orientation head30to move along the axial direction X to drive the blocking member40to approach or move away from the sensing unit61of the sensor60, so as to make the sensing unit61send a driving signal to the controller12to turn on of turn off the transmission motor11, so that the workpiece80is smoothly sleeved on the mounting head50. When the transmission motor11is activated, a feedback parameter is sent to the controller12to know a rotation angle of the transmission motor11, and the controller12receives the preset angle input from the outside and calculates the compensation angle according to the rotation angle and the preset angle, and then controls the transmission motor11to rotate according to the compensation angle, so that the mounting head50rotates to preset angle to accurately position the angle of workpiece80.