Pressing device

Abstract

The utility model discloses a pressing device. The pressing device comprises a base, a first connecting piece and a pressing piece. The base is provided with a stop part. The first connecting piece is connected to the base, the first connecting piece can rotate around a first axis relative to the base, and the first connecting piece is provided with a first thread. The pressing piece comprises a base body and a pressing part, the base body is provided with an abutting face and a second thread, the stopping part is used for abutting against the abutting face to limit rotation of the pressing piece relative to the base, the pressing part is connected to the base body, and the second thread is suitable for being meshed with the first thread so that the base body can rotate relative to the base in the direction around the first axis. And the pressing part is driven to press the workpiece. According to the technical scheme, the pressing piece moves in the direction parallel to the first axis, due to the fact that the stopping part can limit rotation of the pressing piece relative to the base, the base is installed on the pressing platform, the position of the stopping part is determined, the corresponding pressing position of the pressing piece and the workpiece is determined accordingly, and the convenience of positioning and pressing of the pressing device and the workpiece can be improved.

Description

Technical Field

[0001] The utility model relates to the technical field of mechanical tooling, in particular to a pressing device. Background Art

[0002] During the processing or measurement of products, it is often necessary to clamp and fix the workpiece. In the prior art, when the clamping device clamps the workpiece, it is necessary to manually directly position the parts of the clamping workpiece. The positioning accuracy of the clamping device is low, the operation is complicated, and the convenience of the clamping device in clamping the workpiece is poor. Utility Model Content

[0003] The main purpose of the utility model is to provide a clamping device, which can solve the technical problem of poor positioning convenience of the clamping device for clamping a workpiece.

[0004] In order to achieve the above-mentioned purpose, the utility model proposes a clamping device, which includes a base, a first connecting member and a clamping member. The base is provided with a stopper. The first connecting member is connected to the base, and the first connecting member can rotate relative to the base around a first axis, and the first connecting member has a first thread. The clamping member includes a base and a clamping member, the base has an abutment surface and a second thread, the stopper is used to abut with the abutment surface to limit the rotation of the clamping member relative to the base, the clamping member is connected to the base, and the second thread is suitable for engaging with the first thread, so that the base can rotate relative to the base around the first axis and drive the clamping member to clamp the workpiece.

[0005] In some embodiments, the abutment surface includes a first wall surface and a second wall surface, the first wall surface and the second wall surface are both parallel to the first axis, the first wall surface and the second wall surface intersect, the pressing member has a first state of pressing the workpiece and a second state of releasing the workpiece, the pressing member can switch from the first state to the second state by rotating around the first axis, when the pressing member is in the first state, the stop portion abuts against the first wall surface, and when the pressing member is in the second state, the stop portion abuts against the second wall surface.

[0006] In some embodiments, the angle α between the first wall surface and the second wall surface satisfies: 60°≤α≤120°.

[0007] In some embodiments, the abutment surface also includes a third wall surface, which is configured as an arc-shaped surface. Along the direction around the first axis, one side of the third wall surface is connected to the first wall surface, and the other side is connected to the second wall surface. A ball is provided at one end of the stop portion close to the clamping member, and when the clamping member switches between the first state and the second state, the ball can abut against the third wall surface.

[0008] In some embodiments, the abutment surface also includes a third wall surface, which is configured as an arc-shaped surface. Along the direction around the first axis, one side of the third wall surface is connected to the first wall surface, and the other side is connected to the second wall surface. When the clamping member switches between the first state and the second state, the stop portion is spaced apart from the third wall surface.

[0009] In some embodiments, the abutting surface defines a snap-fitting groove, and the pressing portion is connected to a side of the base body facing away from the snap-fitting groove.

[0010] In some embodiments, the base defines a accommodating cavity and an opening, the opening is connected to the accommodating cavity, the first connecting member has a first end and a second end, the first end is disposed in the accommodating cavity and abuts against the base, the second end is connected to the first end and passes through the opening, and a first thread is provided on the side of the second end facing away from the first end.

[0011] In some embodiments, the second end is configured as a threaded rod, the threaded rod is provided with a first thread, and the second thread is configured as a threaded hole extending in a direction parallel to the first axis.

[0012] In some embodiments, the clamping device also includes an adapter, wherein one end of the first connecting member is connected to the base and the other end is connected to the adapter along a direction parallel to the first axis, and a prism is provided at the end of the adapter facing away from the first connecting member, and the adapter is used to drive the first connecting member to rotate.

[0013] In some embodiments, the clamping device also includes a guide member, which is connected to the adapter member, and the guide member has a first inner circumferential wall and a second inner circumferential wall. The first inner circumferential wall defines a second through hole. Along a direction parallel to the first axis and pointing from the adapter member to the first connecting member, the enclosed area of ​​the first inner circumferential wall gradually decreases. The second inner circumferential wall defines a third through hole, the second through hole is connected to the second through hole, and the prism is passed through the third through hole.

[0014] In some embodiments, the clamping device further includes a second connecting member, the base defines a fourth through hole, the second connecting member passes through the fourth through hole, and the second connecting member is used to connect to the clamping platform.

[0015] Compared with the prior art, the beneficial effects of the utility model are:

[0016] In the technical solution of the present application, the first connecting member is connected to the base, the first connecting member has a first thread, the clamping member has a second thread, the first thread is meshed with the second thread, and since the stopper can limit the rotation of the clamping member relative to the base, the base is mounted on the clamping platform, the position of the stopper is determined, and the clamping position of the corresponding clamping member is also determined accordingly, and the clamping member can rotate around the first axis and clamp the workpiece. The technical solution of the present application can improve the positioning accuracy of the clamping member and the workpiece, and improve the convenience of the clamping device in positioning and clamping the workpiece. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] In order to more clearly illustrate the embodiments of the utility model or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the utility model. For ordinary technicians in this field, other drawings can be obtained based on the structures shown in these drawings without paying creative work.

[0018] Figure 1 This is a schematic diagram of the three-dimensional structure of a pressing device in one embodiment of the utility model;

[0019] Figure 2 It is a cross-sectional structural schematic diagram of a pressing device in one embodiment of the utility model;

[0020] Figure 3 This is a schematic diagram of the explosion structure of the pressing device in one embodiment of the utility model;

[0021] Figure 4 It is an assembly schematic diagram of a clamping device in a first state at a first viewing angle in an embodiment of the utility model;

[0022] Figure 5 It is an assembly schematic diagram of the clamping device in a first state at a second viewing angle in one embodiment of the utility model;

[0023] Figure 6 It is an assembly schematic diagram of the clamping device in the second state at a first viewing angle in one embodiment of the utility model;

[0024] Figure 7 It is an assembly schematic diagram of the clamping device in a second state at a second viewing angle in one embodiment of the utility model;

[0025] Figure 8 This is a schematic diagram of the structure of the base in one embodiment of the utility model;

[0026] Fig. 9 It is a top view schematic diagram of the clamping device in a first state in one embodiment of the utility model.

[0027] Description of Figure Numbers:

[0028] A clamping device 100;

[0029] Base 110; stopper 111; ball 1111; accommodating cavity 112; opening 113; fourth through hole 114;

[0030] First connecting member 120; first thread 121; first axis 122; first end 123; second end 124;

[0031] The pressing member 130 ; the base 131 ; the abutting surface 1311 ; the first wall surface 13111 ; the second wall surface 13112 ; the third wall surface 13113 ; the clamping groove 13114 ; the second thread 1312 ; the pressing portion 132 ;

[0032] Adapter 140; Prism 141;

[0033] Guide member 150; first inner peripheral wall 151; second through hole 1511; second inner peripheral wall 152; third through hole 1521;

[0034] A second connecting member 160;

[0035] Workpiece 200;

[0036] A clamping platform 300;

[0037] Angle α.

[0038] The realization of the purpose, functional features and advantages of the utility model will be further explained in conjunction with embodiments and with reference to the accompanying drawings. DETAILED DESCRIPTION

[0039] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments of the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0040] During the processing or measurement of products, it is often necessary to clamp and fix the workpiece. In the prior art, when the clamping device clamps the workpiece, it is necessary to manually directly position the parts of the clamping workpiece. The positioning accuracy of the clamping device is low, the operation is complicated, and the convenience of the clamping device in clamping the workpiece is poor.

[0041] To solve the above technical problems, Figures 1 to 9 As shown, the present application proposes a clamping device 100 , which includes a base 110 , a first connecting member 120 and a clamping member 130 .

[0042] The clamping device 100 is used to clamp and fix the workpiece 200 on the clamping platform 300 to facilitate processing and measurement of the workpiece 200. Figure 1 as well as Figure 7As shown, the base 110 is provided with a stopper 111. The base 110 can be connected to the clamping platform 300, one side of the base 110 abuts against the clamping platform 300, and the stopper 111 can be provided on the side of the base 110 opposite to the clamping platform 300, or on the side of the base 110 adjacent to the clamping platform 300. The stopper 111 can be provided as a bolt, a prism, a cylinder, a hemisphere or any other suitable protrusion, and the corresponding base 131 defines a slot that cooperates with the stopper 111 through the abutment surface 1311. Further, the stopper 111 can be integrally formed with the base 110. The stopper 111 can also be provided as a slot, and correspondingly, the base 131 is provided with a bolt, a prism, a cylinder, a hemisphere or any other suitable protrusion to cooperate with the stopper 111, and the abutment surface 1311 is provided on the protrusion.

[0043] like Figure 1 as well as Figure 2 As shown, the first connecting member 120 is connected to the base 110, and the first connecting member 120 can rotate around the first axis 122 relative to the base 110, and the first connecting member 120 has a first thread 121. Specifically, the first thread 121 can be arranged around the first axis 122. The first thread 121 is an external thread. The first thread 121 is engaged with the second thread 1312, and correspondingly, the second thread 1312 is configured as a corresponding internal thread. According to different clamping requirements, the first thread 121 can be configured as a left-handed thread or a right-handed thread. The first thread 121 is engaged with the second thread 1312, and correspondingly, the second thread 1312 can be configured as a corresponding left-handed thread or a right-handed thread, and there is no limitation here.

[0044] like Figure 1 as well as Figure 3As shown, the pressing member 130 includes a base 131 and a pressing portion 132, the base 131 has an abutting surface 1311 and a second thread 1312, the stopper 111 is used to abut against the abutting surface 1311, so that the stopper 111 can limit the rotation of the pressing member 130 relative to the base 110, the pressing portion 132 is connected to the base 131, and the second thread 1312 is suitable for engaging with the first thread 121, so that the base 131 can rotate relative to the base 110 along the direction of the first axis 122, and drive the pressing portion 132 to press the workpiece 200. According to the different forms of the abutting portion, the abutting surface 1311 can define a groove, or it can be set on a protrusion, which will not be repeated here. The form of the second thread 1312 is set according to the form of the first thread 121, which will not be repeated here. In order to improve the pressing stability of the workpiece 200, the pressing portion 132 can be configured as a pressing plate, a pressing rod or any suitable pressing head. It should be noted that the stop portion 111 is used to limit the rotation of the clamping member 130 relative to the base 110. The rotation of the clamping member 130 can be limited within any suitable angle range to facilitate the installation of the clamping member 130 and the workpiece 200. The actual rotation angle of the clamping member 130 can be 0° or any other suitable angle within the range limited by the stop portion 111.

[0045] like Figure 3 , Figure 4 as well as Figure 7 As shown, in the technical solution of the present application, the first connecting member 120 is connected to the base 110, the first connecting member 120 has a first thread 121, the pressing member 130 has a second thread 1312, the first thread 121 is meshed with the second thread 1312, and the stopper 111 can limit the rotation of the pressing member 130 relative to the base 110, the base 110 is installed on the pressing platform 300, the position of the stopper 111 is determined, and the corresponding pressing position of the pressing member 130 is also determined accordingly, and the pressing member 130 can rotate around the first axis 122 and press the workpiece 200. The technical solution of the present application can improve the positioning accuracy of the pressing member 130 and the workpiece 200, and improve the convenience of the pressing device 100 in positioning and pressing the workpiece 200.

[0046] like Figure 4 , Figure 5 , Figure 6 as well as Figure 7As shown, the pressing member 130 has a first state of pressing the workpiece 200 and a second state of releasing the workpiece 200, the stopper 111 cooperates with the abutting surface 1311, and the abutting surface 1311 may have a cross-arranged wall surface to limit the rotation of the pressing member 130. The abutting surface 1311 may be parallel to the first axis 122 or may intersect with the first axis 122. Correspondingly, the wall surface abutted by the stopper 111 and the abutting surface 1311 may also be parallel to the first axis 122 or intersect with the first axis 122. The abutting surface 1311 may be a plane or a curved surface. In this embodiment, the abutting surface 1311 includes a first wall surface 13111 and a second wall surface 13112. The first wall surface 13111 and the second wall surface 13112 are both parallel to the first axis 122. The first wall surface 13111 and the second wall surface 13112 intersect. The pressing member 130 has a first state of pressing the workpiece 200 and a second state of releasing the workpiece 200. The pressing member 130 can be switched from the first state to the second state by rotating around the first axis 122. When the pressing member 130 is in the first state, the stopper 111 abuts against the first wall surface 13111. When the pressing member 130 is in the second state, the stopper 111 abuts against the second wall surface 13112. The first connecting member 120 can rotate around the first axis 122. The first thread 121 is engaged with the second thread 1312. Therefore, during the rotation of the first connecting member 120, the pressing member 130 can rotate with the first connecting member 120 relative to the base 110. Specifically, since the stopper 111 is disposed between the first wall surface 13111 and the second wall surface 13112, the pressing member 130 can rotate within the angle range between the first wall surface 13111 and the second wall surface 13112. Depending on the angle between the first wall surface 13111 and the second wall surface 13112, the angle at which the connecting member can rotate is also different. Fig. 9 As shown, in some embodiments, the angle α between the first wall 13111 and the second wall 13112 satisfies: 60°≤α≤120°. Specifically, the angle α can be any suitable angle such as 60°, 61°, 65°, 70°, 75°, 90°, 100° or 120°.

[0047] like Figure 4 as well as Figure 7As shown, in some embodiments, if in the initial state, the stop portion 111 abuts against the second wall 13112, or the stop portion 111 is located between the first wall 13111 and the second wall 13112 and is spaced apart from the first wall 13111 and the second wall 13112, the first connecting member 120 is rotated in the first direction around the first axis 122. Since the first thread 121 is engaged with the second thread 1312 and there is no restriction of the stop portion 111, the first connecting member 120 can drive the clamping member 130 to rotate relative to the base 110 around the first axis 122. The clamping member 130 is stationary relative to the first connecting member 120 and rotates relative to the base 110 around the first axis 122. When the clamping member 130 rotates until the first wall surface 13111 abuts against the stop portion 111, the first connecting member 120 continues to rotate along the first direction around the first axis 122. The clamping member 130 no longer rotates with the first connecting member 120, but approaches the clamping surface of the workpiece 200 along a direction parallel to the first axis 122, so that the clamping portion 132 can finally clamp the workpiece 200. On the contrary, if in the initial state, the stop portion 111 abuts against the first wall 13111, or the stop portion 111 is located between the first wall 13111 and the second wall 13112 and is spaced apart from the first wall 13111 and the second wall 13112, the first connecting member 120 is rotated in a direction around the first axis 122 and opposite to the first direction. Since the first thread 121 is engaged with the second thread 1312 and there is no restriction of the stop portion 111, the first connecting member 120 can drive the clamping member 130 to rotate relative to the base 110 around the first axis 122. When the clamping member 130 rotates until the second wall 13112 abuts against the stop portion 111, the first connecting member 120 continues to rotate in a direction around the first axis 122 and opposite to the first direction. The clamping member 130 no longer rotates, but moves to the side away from the workpiece 200 to release the workpiece 200. It can be understood that in some embodiments, if the stopper 111 abuts against the first wall 13111 and the second wall 13112 in both the first state and the second state, the first wall 13111 and the second wall 13112 can be used to limit the rotation of the pressing member 130 around the first axis 122. The cross arrangement of the first wall 13111 and the second wall 13112 can guide the movement of the pressing member 130 along the first axis 122 through the arrangement of the abutting surface 1311 and the stopper 111, so that the movement of the pressing member 130 is more stable.On the other hand, if the angle between the first wall surface 13111 and the second wall surface 13112 is not 0°, the clamping member 130 can rotate relative to the base 110, and the corresponding clamping portion 132 can also rotate relative to the base 110, so that during the installation process of the workpiece 200, the position of the clamping portion 132 is first determined by the stopper 111 on the base 110, and the clamping portion 132 is set at any position convenient for installing the workpiece 200. After the workpiece 200 is installed in place, the first connecting member 120 is adjusted by rotation to rotate the clamping portion 132 to the clamping position and clamp the workpiece 200. The setting of the first wall surface 13111 and the second wall surface 13112 can effectively improve the installation convenience of the workpiece 200.

[0048] During the switching process between the first state and the second state of the pressing member 130, the abutting surface 1311 may be provided with a transition wall surface. Figure 1 As shown, in some embodiments, the abutment surface 1311 also includes a third wall surface 13113, and the third wall surface 13113 is configured as an arc-shaped surface. Along the direction around the first axis 122, one side of the third wall surface 13113 is connected to the first wall surface 13111, and the other side is connected to the second wall surface 13112. A ball 1111 is provided at one end of the stopper 111 close to the clamping member 130. When the clamping member 130 switches between the first state and the second state, the ball 1111 can abut against the third wall surface 13113, so that the ball 1111 can roll relative to the abutment surface 1311, thereby reducing the friction between the stopper 111 and the abutment surface 1311. The third wall surface 13113 can also be provided with a guide groove or the like to further improve the clamping accuracy of the clamping member 130, which is not limited here. Figure 7 As shown, in some embodiments, to facilitate the rotation of the clamping member 130, when the clamping member 130 switches between the first state and the second state, the stop portion 111 is spaced apart from the third wall 13113, and the stop portion 111 is avoided on the third wall 13113, thereby effectively avoiding friction between the stop portion 111 and the third wall 13113.

[0049] When the pressing member 130 switches between the first state and the second state, the pressing portion 132 is connected to the base 131, and the pressing portion 132 can also rotate in the direction around the first axis 122. The pressing portion 132 can be arranged on the side of the base 110 where the abutting surface 1311 is arranged, can be arranged on the side of the base 110 away from the abutting surface 1311, and can also be arranged on the side of the base 110 adjacent to the abutting surface 1311. Figure 4 as well as Figure 5As shown, in some embodiments, the abutting surface 1311 defines a clamping groove 13114, and the pressing portion 132 is connected to a side of the base 131 away from the clamping groove 13114. Specifically, the first wall 13111, the second wall 13112 and the third wall 13113 jointly define the clamping groove 13114. In some embodiments, the workpiece 200 can be arranged on one side of the base 110, the stopper 111 is arranged on the side of the base 110 away from the workpiece 200, the abutting surface 1311 defines a clamping groove 13114, and the clamping groove 13114 can penetrate the base 131 in a direction parallel to the first axis 122. The base 131 has a peripheral wall connected to the abutting surface 1311 and arranged around the first axis 122. The clamping portion 132 is connected to the side of the base 131 away from the clamping groove 13114. Specifically, the clamping portion 132 can be connected to the wall surface adjacent to the peripheral wall and the abutting surface 1311, or can be connected to the wall surface opposite to the peripheral wall and the abutting surface 1311, which is not limited here. When in use, the clamping member 130 rotates around the first axis 122, and the clamping portion 132 also rotates around the first axis 122. During the rotation process, the clamping portion 132 can approach or move away from the workpiece 200 in the direction around the first axis 122. Specifically, when the clamping member 130 is in the second state, the stopper 111 abuts against the second wall surface 13112, and the clamping member 132 rotates to the side away from the workpiece 200. The clamping member 130 switches from the second state to the first state, and the clamping member 132 rotates from the side away from the workpiece 200 to the side close to the workpiece 200. When the clamping member 130 is in the first state, the stopper 111 abuts against the first wall surface 13111, and the clamping member 132 rotates to the clamping station and can clamp the workpiece 200. The clamping member 132 is arranged on the side of the base 110 away from the clamping groove 13114, which helps to improve the convenience of installing the workpiece 200, can effectively avoid the interference of the clamping device 100 with the workpiece 200 when the workpiece 200 is installed, and reduce the repeated installation of the base 110 during the replacement of the workpiece 200. On the contrary, after the workpiece 200 is processed and measured, when the workpiece 200 is disassembled, the clamping portion 132 can be rotated from the side close to the workpiece 200 to the side away from the workpiece 200 to facilitate the unloading of the workpiece 200, which will not be repeated here.

[0050] The first connecting member 120 can rotate relative to the base 110, and the connection between the base 110 and the first connecting member 120 can be different according to different pressing requirements. Figure 8As shown, in some embodiments, the base 110 defines a receiving cavity 112 and an opening 113, the opening 113 is in communication with the receiving cavity 112, the first connecting member 120 has a first end 123 and a second end 124, the first end 123 is disposed in the receiving cavity 112 and abuts against the base 110, the second end 124 is connected to the first end 123 and penetrates through the opening 113, and a first thread 121 is disposed on a side of the second end 124 away from the first end 123. It can be understood that the first connecting member 120 can rotate relative to the base 110, and therefore, the first end 123 can also rotate in the receiving cavity 112. Both the first end 123 and the second end 124 can be configured as a column, the projection of the first end 123 along a direction parallel to the first axis 122 covers the opening 113, and the wall surface of the first end 123 close to the second end 124 abuts against the base 110. Further, in order to improve the connection stability between the first connecting member 120 and the base 110, and to enable the pressing member 130 to provide greater pressure when pressing the workpiece 200, the area of ​​the cross section of the first end 123 along the vertical axis 122 can be greater than the area of ​​the cross section of the second end 124 along the vertical axis 122, so as to improve the strength of the first connecting member 120. The first end 123 can be configured as a cylinder, or as a bearing, etc.

[0051] In some embodiments, the second end 124 is configured as a threaded rod, the threaded rod is provided with a first thread 121, and the second thread 1312 is configured as a threaded hole extending in a direction parallel to the first axis 122. That is to say, the first thread 121 is configured as an external thread, and the second thread 1312 is configured as an internal thread. Depending on the clamping requirements, the first thread 121 and the second thread 1312 can be configured as left-handed threads or right-handed threads. Depending on the size of the workpiece 200 to be clamped, the second end 124 can also be configured as a threaded rod with different lengths and different diameters, which is not limited here. For example, the first thread 121 and the second thread 1312 are configured as left-handed threads, and the perspective along the direction parallel to the first axis 122 and from the clamping member 130 to the base 110 is a top-down perspective. In the top-down perspective, the clamping member 130 can be switched from the second state to the first state by rotating clockwise, as shown in FIG. Figure 4 , Figure 5 , Figure 6 as well as Figure 7As shown, in some embodiments, before installing the workpiece 200, the clamping device 100 has been installed on the clamping platform 300, the first thread 121 is meshed with the second thread 1312, the first connecting member 120 is rotated counterclockwise, and the clamping member 130 rotates counterclockwise with the first connecting member 120. When the second wall 13112 contacts the stop portion 111, the first connecting member 120 continues to be rotated counterclockwise, and the clamping member 130 no longer rotates, but moves in a direction parallel to the first axis 122 toward the side away from the base 110. The clamping portion 132 rotates to the side away from the workpiece 200, and the workpiece 200 can be installed at this time. After the workpiece 200 is installed, the first connecting member 120 is rotated clockwise. Since the clamping portion 132 does not clamp the workpiece 200 and the stop portion 111 does not abut against the first wall 13111, the clamping member 130 can rotate clockwise with the first connecting member 120. When the clamping member 130 rotates until the stop portion 111 abuts against the first wall 13111, the first connecting member 120 continues to be rotated clockwise. The clamping member 130 no longer rotates, but further clamps the workpiece 200 in a direction close to the workpiece 200. When unloading the workpiece 200, the first connecting member 120 is rotated counterclockwise. Since the clamping portion 132 clamps the workpiece 200, the first connecting member 120 is subjected to an axial force parallel to the first direction and directed from the base 110 to the clamping member 130. When the first connecting member 120 is just started to be rotated, the clamping member 130 will not rotate. When the clamping member 130 is displaced axially upward in a direction parallel to the first direction away from the base 110, the clamping portion 132 separates from the workpiece 200, and the axial force is released. When the first connecting member 120 continues to be rotated counterclockwise, the clamping member 130 rotates accordingly, and the first wall 13111 separates from the stop portion 111. When the second wall 13112 of the clamping member 130 abuts against the stop portion 111 again, the first connecting member 120 continues to be rotated, and the clamping member 130 moves to the side away from the base 110. The distance between the clamping portion 132 and the workpiece 200 is greatly increased, and the workpiece 200 can be taken out. It should be noted that, in some embodiments, the workpiece 200 can also be taken out when the second wall surface 13112 abuts against the stopper 111, which is not limited here. In some embodiments, the first thread 121 and the second thread 1312 can also be configured as right-hand threads, so that the first connecting member 120 can press the workpiece 200 when rotating counterclockwise, which will not be repeated here.

[0052] The first connecting member 120 can rotate relative to the base 110. Specifically, the end of the first connecting member 120 close to the base 110 can be used as the driving end, or the end of the first connecting member 120 close to the pressing member 130 can be used as the driving end. Figure 1 , Figure 2 as well as Figure 4As shown, in some embodiments, the clamping device 100 further includes an adapter 140, and along a direction parallel to the first axis 122, one end of the first connecting member 120 is connected to the base 110, and the other end is connected to the adapter 140, and the end of the adapter 140 away from the first connecting member 120 is provided with a prism 141, and the adapter 140 is used to drive the first connecting member 120 to rotate. The adapter 140 can be provided on the first connecting member 120 by pin connection, bolt connection, welding or integral molding. The prism 141 can be set to a quadrilateral prism, a hexagonal prism or a prism with a cone tip, etc., which is not limited here. The setting of the prism 141 of the adapter 140 allows the first connecting member 120 to be connected to any suitable driving source, improves the rotation convenience of the first connecting member 120, and improves the clamping efficiency of the clamping device 100.

[0053] To facilitate the connection between the adapter 140 and the external driving component, such as Figure 1 As shown, in some embodiments, the pressing device 100 may further include a guide member 150, the guide member 150 is connected to the adapter 140, the guide member 150 has a first inner peripheral wall 151 and a second inner peripheral wall 152, the first inner peripheral wall 151 defines a second through hole 1511, along the direction parallel to the first axis 122 and pointing from the adapter 140 to the first connecting member 120, the enclosed area of ​​the first inner peripheral wall 151 gradually decreases, the second inner peripheral wall 152 defines a third through hole 1521, the second through hole 1511 is connected to the second through hole 1511, and the prism 141 is penetrated through the third through hole 1521. That is, when in use, the external drive screwing device can abut against the second inner peripheral wall 152, so that the guide member 150 can guide the external drive screwing device to dock with the adapter 140 through the second inner peripheral wall 152. It should be noted that the guide member 150 can be connected to the adapter 140 by welding, bolting or integral molding. In some embodiments, the enclosed area of ​​the second inner peripheral wall 152 may be equal to the minimum enclosed area of ​​the first inner peripheral wall 151. In some embodiments, along the direction parallel to the first axis 122 and pointing from the adapter 140 to the first connector 120, the enclosed area of ​​the second inner peripheral wall 152 may also gradually decrease, and further, the maximum enclosed area of ​​the second inner peripheral wall 152 may be equal to the minimum enclosed area of ​​the first inner peripheral wall 151.

[0054] The clamping device 100 can be connected to the clamping platform 300 by any suitable means such as a pin connection or a bolt connection. Figure 3 as well as Figure 4As shown, in some embodiments, in order to improve the connection stability between the base 110 and the pressing platform 300, the pressing device 100 further includes a second connecting member 160, the base 110 defines a fourth through hole 114, the second connecting member 160 is penetrated through the fourth through hole 114, and the second connecting member 160 is used to connect with the pressing platform 300. It can be understood that the base 110 can be provided with a plurality of fourth through holes 114, and the pressing device 100 can be provided with second connecting members 160 corresponding to the fourth through holes 114 one by one. Further, the fourth through hole 114 can be configured as a threaded hole, and the second connecting member 160 can be configured as a bolt, which will not be repeated here.

[0055] It should be noted that if the embodiments of the present invention involve directional indications (such as up, down, left, right, front, back...), the directional indications are only used to explain the relative position relationship, movement status, etc. between the components in a certain specific posture. If the specific posture changes, the directional indications will also change accordingly.

[0056] In addition, if there are descriptions involving "first", "second", etc. in the embodiments of the utility model, the descriptions of "first", "second", etc. are only used for descriptive purposes and cannot be understood as indicating or implying their relative importance or implicitly indicating the number of technical features indicated. Therefore, the features limited to "first" and "second" may explicitly or implicitly include at least one of the features. In addition, if "and / or", "and / or" or "and / or" appears in the full text, its meaning includes three parallel schemes. Taking "A and / or B" as an example, it includes scheme A, or scheme B, or a scheme that satisfies both A and B. In addition, the technical solutions between the various embodiments can be combined with each other, but it must be based on the ability of ordinary technicians in this field to implement. When the combination of technical solutions is contradictory or cannot be implemented, it should be deemed that such a combination of technical solutions does not exist and is not within the scope of protection required by the utility model.

[0057] The above are only preferred embodiments of the present invention, and do not limit the patent scope of the present invention. All equivalent structural changes made by using the contents of the present invention specification and drawings under the utility model concept, or directly / indirectly used in other related technical fields are included in the patent protection scope of the present invention.

Claims

1. A clamping device, characterized in that: include: A base, provided with a stopper; A first connecting member connected to the base, the first connecting member can rotate relative to the base around a first axis, and the first connecting member has a first thread; The clamping member includes a base and a clamping portion, the base having an abutment surface and a second thread, the stop portion being used to abut against the abutment surface to limit the rotation of the clamping member relative to the base, the clamping portion being connected to the base, and the second thread being suitable for engaging with the first thread so that the base can rotate relative to the base around the first axis and drive the clamping portion to clamp the workpiece.

2. The pressing device according to claim 1, characterized in that: The abutting surface includes a first wall surface and a second wall surface, the first wall surface and the second wall surface are both parallel to the first axis, the first wall surface and the second wall surface intersect, the pressing member has a first state of pressing the workpiece and a second state of releasing the workpiece, the pressing member can switch from the first state to the second state by rotating around the first axis, when the pressing member is in the first state, the stop portion abuts against the first wall surface, and when the pressing member is in the second state, the stop portion abuts against the second wall surface.

3. The pressing device according to claim 2, characterized in that: An included angle α between the first wall surface and the second wall surface satisfies: 60°≤α≤120°.

4. The pressing device according to claim 2, characterized in that: The abutting surface further includes a third wall surface, which is configured as an arc-shaped surface. Along the direction around the first axis, one side of the third wall surface is connected to the first wall surface, and the other side of the third wall surface is connected to the second wall surface; wherein, A ball is provided at one end of the stopper close to the pressing member, and when the pressing member switches between the first state and the second state, the ball can abut against the third wall surface; Alternatively, when the pressing member switches between the first state and the second state, the stopper is spaced apart from the third wall surface.

5. The pressing device according to claim 1, characterized in that: The abutting surface defines a clamping groove, and the pressing portion is connected to a side of the base body facing away from the clamping groove.

6. The pressing device according to claim 1, characterized in that: The base defines a accommodating cavity and an opening, the opening is connected to the accommodating cavity, the first connecting member has a first end and a second end, the first end is arranged in the accommodating cavity and abuts against the base, the second end is connected to the first end and passes through the opening, and the first thread is provided on the side of the second end facing away from the first end.

7. The pressing device according to claim 6, characterized in that: The second end is configured as a threaded rod, the threaded rod is provided with the first thread, and the second thread is configured as a threaded hole extending in a direction parallel to the first axis.

8. The pressing device according to claim 1, characterized in that: The clamping device also includes an adapter. Along a direction parallel to the first axis, one end of the first connecting member is connected to the base and the other end is connected to the adapter. A prism is provided at the end of the adapter facing away from the first connecting member. The adapter is used to drive the first connecting member to rotate.

9. The pressing device according to claim 8, characterized in that: The clamping device also includes a guide member, which is connected to the adapter member. The guide member has a first inner circumferential wall and a second inner circumferential wall. The first inner circumferential wall defines a second through hole. Along a direction parallel to the first axis and pointing from the adapter member to the first connecting member, the enclosed area of ​​the first inner circumferential wall gradually decreases. The second inner circumferential wall defines a third through hole. The second through hole is connected to the second through hole, and the prism is penetrated through the third through hole.

10. The pressing device according to claim 1, characterized in that: The clamping device further includes a second connecting member, the base defines a fourth through hole, the second connecting member is passed through the fourth through hole, and the second connecting member is used to be connected to the clamping platform.

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