Abstract:
A device, used for clamping and rotating the object, includes two first rods, one ends of which are respectively connected to one ends of the first plate and the second plate through a linked unit; another ends of the first rods are connected to the third rod that is used for balancing the rotating angles of the first rod and two linked units, such that the heights of two ends of the first rods and the second rods can be kept in step. Two second rods are connected to the first plate and the second plate respectively, as well as, another ends of second rods are connected to the fourth rod respectively. Accordingly, the fourth rod can be rotated to drive the second rod, such that the first plate and the second plate can be rotated. Therefore, due to two plates are used for clamping and rotating synchronously, users can take the advantages while the device is used.

Description:
BACKGROUND OF THE INVENTION 
       [0001]    1. Technical Field 
         [0002]    The present invention relates to a device for clamping and rotating the object, comprising two plates to be opened and closed or rotated over synchronously. 
         [0003]    2. Description of the Prior Art 
         [0004]      FIG. 1  illustrates a device for clamping and rotating the object according to the prior art. As illustrated, the device  10  comprises a first plate  111 , a second plate  113 , two first rods  13 , and a second rod  15 . The first plate  111  is positioned oppositely with the second plate  113 , and a clamping space  12  is provided between the first plate  111  and the second plate  113 . 
         [0005]    Two first rods  13  are provided on two ends of the first plate  111  and the second plate  113  respectively, that is, one ends of the first rods  13  are respectively connected to the first plate  111  and the second plate  113  through the first cylinder  171  and second cylinder  173 . Accordingly, the first plate  111  and the second plate  113  can be drove to displace up and down for adjusting the size of clamping space  12  by the first cylinder  171  and the second cylinder  173 , such that the object can be clamped between the first plate  111  and the second plate  113 . 
         [0006]    Besides, another end of the first rod  13  is connected to two ends of a second rod  15  through a transmission belt  19 , accordingly, the first plate  111  and the second plate  113  can be drove to rotate by the first rod  13  since the second rod  15  is rotated. In other words, the first plate  111  and the second plate  113  of the device  10  can be used for clamping and rotating the object. 
         [0007]    However, during the device  10  is clamping and rotating the object, the cylinders  171  and  173  thereof may telescoped asynchronously; therefore, as two first cylinders  171  telescope asynchronously, two ends of the first plate  111  will be with different heights; similarly, as two second cylinders  173  telescope asynchronously, two ends of the second plate  113  will be with different heights. Accordingly, it is inconvenient for use. 
         [0008]    Moreover, the first plate  111  may be damaged due to the left first cylinder  171  and the right first cylinder  171  are telescoped asynchronously, that is, the left first cylinder  171  is telescoped faster than the right first cylinder  171 , similarly, the second plate  113  may be damaged due to the left second cylinder  173  and the right second cylinder  173  are telescoped asynchronously. 
         [0009]    The gravity also affects the first cylinder  171  and the second cylinder  173  to telescope asynchronously through the first plate  111  and the second plate  113  during the operation process; for example, when the first plate  111  is positioned upper than the first cylinder  171 , the first cylinder  171  will bear the weight of the first plate  111 , such that the first cylinder  171  will extend slower and retract faster; comparatively, when the second plate  113  is positioned lower than the second cylinder  173 , the second cylinder  173  will bear the weight of the second plate  113 , such that the second cylinder  173  will extend faster and retract slower. Therefore, the device  10  will be inconvenient for use due to the first plate  111  and the second plate  113  are displaced asynchronously. 
       SUMMARY OF THE PRESENT INVENTION 
       [0010]    It is, therefore, the main object of the present invention to provide a device for clamping and rotating the object, which comprises two linked units connected with two ends of the first plate and the second plate, the first plate and the second plate being drove by two linked units simultaneously to be displaced up and down synchronously. 
         [0011]    It is another object of the present invention to provide a device for clamping and rotating the object, wherein one ends of two first rods are respectively connected to two rotating units, and another ends thereof are respectively connected to a third rod for balancing the rotating angles of two first rods and two rotating units, such that the heights of the first plate and the second plate are kept to be equal. 
         [0012]    It is still another object of the present invention to provide a device for clamping and rotating the object, wherein the linked unit comprises a rotating unit and two connecting units, and the rotating unit is connected respectively to the first plate and the second plate through two connecting units. The first plate and the second plate are drove by the rotating units through the connecting units, such that the first plate and the second plate can be displaced up and down synchronously. 
         [0013]    It is still another object of the present invention to provide a device for clamping and rotating the object, wherein one ends of two second rods are respectively connected to the first plate and the second plate through the slides, and the first plate and the second plate can be slid along the slides. Another ends of two second rods are connected to a fourth rod, and the first plate and the second plate can be rotated by the fourth rod through the second rod. 
         [0014]    It is still another object of the present invention to provide a device for clamping and rotating the object, wherein the second rod is connected to the rotating unit through the cylinder, the rotating unit is rotated by the cylinder to alter the size of the clamping space between the first plate and the second plate for benefiting to clamp the object positioned between the first plate and the second plate. 
         [0015]    It is still another object of the present invention to provide a device for clamping and rotating the object, wherein the first rod is positioned within a through hole of the second rod, and the third rod is positioned within a through hole of the fourth rod, such that the first rod and the second rod can be rotated independently, and the third rod and the fourth rod can be rotated independently, besides, the volume of the device can be reduced. 
         [0016]    To achieve these and other objects of the present invention, a device for clamping and rotating the object comprises a first plate, a second plate, two linked units, two first rods, two second rods, a third rod, and a fourth rod. The second plate is placed in the opposite position of the first plate, wherein a clamping space is provided between the first plate and the second plate. Each of two linked units comprises a rotating unit and two connecting units, wherein the rotating unit is connected to the first plate and the second plate through connecting units. Two first rods are respectively connected to two rotating units for driving the rotating unit to rotate. Two second rods are respectively connected to two rotating units for driving the first plate and the second plate to rotate through the rotating unit. The third rod is connected to two first rods. The fourth rod is connected to two second rods. 
         [0017]    In one embodiment of aforesaid device for clamping and rotating the object, wherein the second rod is connected to the rotating unit through a cylinder, which is used for driving the rotating unit to rotate. 
         [0018]    In one embodiment of aforesaid device for clamping and rotating the object, wherein two the first rods are connected to the third rod through a first linked unit respectively, and two the second rods are connected to the fourth rod through a second linked unit respectively. 
         [0019]    In one embodiment of aforesaid device for clamping and rotating the object, wherein the third rod is passed through a through hole provided within the fourth rod. 
         [0020]    In one embodiment of aforesaid device for clamping and rotating the object, wherein two the first rods are connected to the rotation axles of two the rotating units respectively. 
         [0021]    To achieve these and other objects of the present invention, a device for clamping and rotating the object comprises a first plate, a second plate, two linked units, two first rods, two second rods, a third rod, and a fourth rod. The second plate is placed in the opposite position of the first plate, wherein a clamping space is provided between the first plate and the second plate. Each of two linked units comprises a rotating unit and two connecting units, wherein the rotating unit is connected to the first plate and the second plate through the connecting units. Two first rods are respectively connected to two rotating units for driving the rotating unit to rotate. Two second rods are respectively connected to the first plate and the second plate for driving the first plate and the second plate to rotate. The third rod is connected to two first rods. The fourth rod is connected to two second rods. 
         [0022]    In one embodiment of aforesaid device for clamping and rotating the object, wherein each of the second rods is connected to the first plate and second plate through at least one slide. 
         [0023]    In one embodiment of aforesaid device for clamping and rotating the object, wherein a sliding seat is provided on each end of the first plate and second plate, wherein the first plate and second plate are connected to the slides through the sliding seats. 
         [0024]    In one embodiment of aforesaid device for clamping and rotating the object, wherein the third rod is passed through a through hole provided within the fourth rod. 
         [0025]    In one embodiment of aforesaid device for clamping and rotating the object, wherein two the first rods are connected to the third rod through a first linked unit respectively, and two the second rods are connected to the fourth rod through a second linked unit respectively. 
         [0026]    In one embodiment of aforesaid device for clamping and rotating the object, wherein two the first rods are connected to the rotation axles of each of two the rotating units respectively. 
         [0027]    In one embodiment of aforesaid device for clamping and rotating the object, further comprising at least one cylinder used for driving the first rods or the rotating units to rotate. 
     
    
     
       BRIEF DESCRIPTION OF THE DRAWINGS 
         [0028]      FIG. 1  is a schematic structural view of a device for clamping and rotating the object, according to the prior art; 
           [0029]      FIG. 2  is a schematic structural view of a device for clamping and rotating the object, in accordance with a first embodiment of the present invention; 
           [0030]      FIGS. 3A and 3B  are schematic sectional views of different parts of the device for clamping and rotating the object in accordance with the first embodiment of the present invention; 
           [0031]      FIG. 4  is a schematic structural view of a device for clamping and rotating the object, in accordance with a second embodiment of the present invention; 
           [0032]      FIG. 5  is a schematic structural view of a device for clamping and rotating the object, in accordance with a third embodiment of the present invention; and 
           [0033]      FIG. 6  is a schematic structural view of a device for clamping and rotating the object, in accordance with a fourth embodiment of the present invention. 
       
    
    
     DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS 
       [0034]    Please refer to  FIG. 2 , a device for clamping and rotating the object in accordance with a first embodiment of the present invention is shown. The device  20  comprises a first plate  211 , a second plate  213 , two first rods  23 , two linked units  24 , two second rods  27 , a third rod  25 , and a fourth rod  29 . The first plate  211  is placed in the opposite position of the second plate  213 , and a clamping space  22  is provided between the first plate  211  and the second plate  213 . The object, such as the stacked web products, can be placed in the clamping space  22 , for being clamped and rotated through the first plate  211  and the second plate  213 . 
         [0035]    Two linked units  24  respectively comprise a rotating unit  241  and two connecting units  243 , wherein the rotating unit  241  is connected to the first plate  211  and the second plate  213  respectively through two connecting units  243 . The rotating unit  241  rotates to drive the first plate  211  and the second plate  213  through two connecting units  243 , such that the first plate  211  and the second plate  213  can be displaced up and down synchronously. 
         [0036]    Referring to  FIG. 3A , the first plate  211  and the second plate  213  are displaced up and down synchronously for enlarging the clamping space  22  between the first plate  211  and the second plate  213  when the rotating unit  241  is rotated with small angle on clockwise direction. On the contrary, the first plate  211  and the second plate  213  are displaced down and up synchronously for reducing the clamping space  22  between the first plate  211  and the second plate  213  when the rotating unit  241  is rotated with small angle on counterclockwise direction. In actual practice, the rotating unit  241  can be as a gear, and the connecting unit  243  comprises the corresponding dentate structure  2433 , such that two connecting units  243  can be drove to alter the size of clamping space  22  between the first plate  211  and the second plate  213  when the gear  241  is rotated, as shown on  FIG. 3B . 
         [0037]    The first plate  211  and the second plate  213  are connected with the rotating unit  241  through the connecting units  243  and displaced synchronously when the rotating unit  241  is rotated. Besides, the linked unit  24  can be used for balancing the displacement rate between the first plate  211  and the second plate  213 , for example, when the second plate  213  positioned in the lower place is affected by the gravity, the gravity of second plate  213  will be transferred to the first plate  211  through the connecting unit  243  and rotating unit  241 , such that the difference of displacement rate between the first plate  211  and the second plate  213  can be got over due to the gravity effect. 
         [0038]    One ends of two first rods  23  are respectively connected to two rotating units  241 . For example, the first rod  23  is connected to the rotation axle of rotating unit  241 , and the rotating unit  241  is drove to rotate for adjusting the spacing between the first plate  211  and the second plate  213  when the first rod  23  is rotated. Another ends of two first rods  23  are respectively connected to the third rod  25 , wherein the third rod  25  can be used for balancing the rotating angle of two first rods  23  and two rotating units  241 . For example, the right first rod  23  is drove to rotate when the left first rod  23  is rotated through the third rod  25 ; one the contrary, the left first rod  23  is drove to rotate when the right first rod is rotated through the third rod  25 . In this embodiment, the first rod  23  is connected to the third rod  25  through the transmission belt, the chain, or the gear, and so on; accordingly, the third rod  25  can be used for balancing the rotating angles of two first rods  23  and two rotating units  241 , such that the height of two ends of the first plate  211  and the second plate  213  can be equal. 
         [0039]    One ends of two second rods  27  are respectively connected to two rotating units  241 , first plate  211 , and/or second plate  213 . The first plate  211  and the second plate  213  are drove to rotate by the rotating units  241 . In this embodiment, two second rods  27  are connected to the rotating units  241  through a cylinder  26  respectively for driving the rotating units  241  to rotate, such that the size of clamping space  22  between the first plate  211  and the second plate  213  can be altered. Besides, the first plate  211  and the second plate  213  can be drove to rotate by the second rods  27  through the cylinders  26  and linked units  24 . Certainly, the second rods  27  can be connected to the rotating units  241  respectively through two cylinders  26 , wherein two cylinders  26  are provided on two ends of the rotation axles of rotating units  241 . 
         [0040]    Another ends of two second rods  27  are respectively connected to the fourth rod  29 . For example, the second rods  27  can be connected to the fourth rod  29  through the transmission belt, the chain, or the gear, and so on; accordingly, when the fourth rod  29  is rotated, two second rods  27  will be drove to rotate, furthermore, the first plate  211  and the second plate  213  will be drove to rotate by the second rods  27  through the cylinder  26  and linked unit  24 . 
         [0041]    In this embodiment, the second rods  27  further comprise a through hole  271  respectively, such that the first rods  23  can respectively pass through the through holes  271 ; furthermore, the diameters of first rods  23  are smaller than the through holes  271 ; therefore, the first rods  23  can be rotated within the through holes  271 ; for example, the first rods  23  and the second rods  27  are with the same rotation axles. As well as, the fourth rod  29  can be with a through hole  291 , such that the third rod  25  can pass through the through hole  291 , wherein the diameter of third rod  25  is also smaller than the through hole  291 , therefore, the third rod  25  can be rotated within the through hole  291 ; for example, the third rod  25  and the fourth rod  29  are with the same rotation axles. 
         [0042]    Certainly, the fourth rod  29  can be provided out of the third rod  25  in other embodiment, as shown on  FIG. 4 , wherein the device  200  and the device  20  are with the same functions also. 
         [0043]    Referring to  FIG. 5 , a device for clamping and rotating the object in accordance with a third embodiment of the present invention is shown. The device  30  comprises a first plate  211 , a second plate  213 , two first rods  23 , two linked units  24 , two second rods  27 , a third rod  25 , and a fourth rod  29 . 
         [0044]    The first rods  23  are connected to the first plate  211  and the second plate  213  respectively through the linked units  24 , wherein each of the linked units  24  comprises a rotating unit  241  and two connecting units  243 . The first rods  23  are connected to the rotating units  241 , and the rotating units  241  are respectively connected to the first plate  211  and the second plate  213  through two connecting units  243 . The first plate  211  and the second plate  213  are drove to displace up and down for altering the size of clamping space  22  between the first plate  211  and the second plate  213  by the rotating units  241  through the connecting units  243 , wherein the rotating units  241  are drove to rotate by the first rods  23 ; therefore, the object, such as the stacked web products, positioned between the first plate  211  and the second plate  213 , can be clamped accordingly. 
         [0045]    In this embodiment, the device  30  comprises at least one cylinder  36 , wherein the cylinder  36  can be used to drive the first rods  23  and/or the rotating units  241  to rotate with a small angle for adjusting the size of clamping space  22 . Two first rods  23  are respectively connected to the third rod  25  through a first linked unit  381 , wherein the first linked unit  381  can be as a gear, a transmission belt, or a chain, and so on. In other embodiment, the first rods  23  can be directly connected to the third rods  25 . 
         [0046]    Two first rods  23  are respectively connected to the third rod  25  through the first linked unit  381 ; accordingly, when one of the first rod  23  is rotated, another one of the first rod  23  will be drove to rotate through the first linked unit  381  and the third rod  25 , such that two first rods  23  and two rotating units  241  will be with the same rotating angles, and the heights of two ends of the first plate  211  and the second plate  213  will be equal. 
         [0047]    Two second rods  27  are respectively connected to the first plate  211  and the second plate  213 , and used to drive to rotate the first plate  211  and the second plate  213 ; for example, two second rods  27  can be respectively connected to the first plate  211  and the second plate  213  through a slide  331 ; furthermore, the first plate  211  and the second plate  213  can be displaced along the slide  331 . In this embodiment, two ends of the first plate  211  and the second plate  213  are respectively with a sliding seat  333  provided; therefore, the first plate  211  and the second plate  213  can be connected with the sliding seats  333  through the slides  331 , such that the first plate  211  and the second plate  213  can be drove to displace along the slides  331  when the first rods  23  and/or the rotating units  241  are rotated. 
         [0048]    The second rods  27  are rotated to drive the slides  331  and/or sliding seats  333  to rotate, such that the first plate  211  and the second plate  213  can be rotated accordingly, and the object, such as the stacked web products, positioned between the first plate  211  and the second plate  213 , can be rotated as well. Two second rods  27  are respectively connected to the fourth rod  29  through a second linked unit  383 , wherein the second linked unit  383  can be as a gear, a transmission belt, or a chain, and so on. In other embodiment, the second rods  27  can be directly connected to the fourth rod  29 . Therefore, the fourth rod  29  can be rotated to drive the second rods  27  to rotate, and the first plate  211  and the second plate  213  can be rotated accordingly. 
         [0049]    In this embodiment, the second rods  27  comprise through holes  271  respectively, and the first rods  23  are provided within the through holes  271 , such that the first rods  23  can be rotated within the through holes  271 . The fourth rod  29  comprises a through hole  291 , and the third rod  25  is provided within the through hole  291 , such that the third rod  25  can be rotated within the through hole  291 . Accordingly, the volume of the device  30  can be efficiently reduced due to the foresaid embodiment, as shown on  FIG. 5 . 
         [0050]    Certainly, the third rod  25  can also be provided out of the fourth rod  29 , as shown on  FIG. 6 , wherein the device  300  and device  30  are with the same functions also. 
         [0051]    Although particular embodiments of the invention have been described in detail for purposes of illustration, various modifications and enhancements may be made without departing from the spirit and scope of the invention. Accordingly, the invention is not to be limited except as by the appended claims.