Drawing device

Abstract

The application relates to the technical field of drawing tooling, aims to solve the technical problem that the drawing tooling in the prior art is inconvenient to operate and is prone to damaging electronic components, and provides a drawing device, which comprises a mounting piece, a first clamping piece, a second clamping piece and a traction piece. The mounting piece has a first end and a second end arranged in opposite directions along a first direction. The first clamping piece is fixedly connected to the first end, and the first clamping piece is used for abutting against one side surface of a second workpiece. The middle part of the second clamping piece is rotatably connected to the mounting piece, and the second clamping piece has a connecting end and a clamping end. The traction piece is connected to the connecting end, the traction piece extends towards the second end along the first direction, the traction piece is used for driving the connecting end to move, so that the clamping end is driven to move close to the first clamping piece and abut against the other side surface of the second workpiece, and the second workpiece is clamped; and the traction piece is also used for driving the mounting piece to move away from the first workpiece, so that the second workpiece is separated from the first workpiece. The application has the beneficial effect of improving the operation reliability of the drawing tooling.

Description

Technical Field

[0001] This application relates to the field of pull-out testing technology, and more specifically, to pull-out apparatus. Background Technology

[0002] Circuit boards typically house electronic components, such as chip-based electronic components. These components are generally connected to the circuit board via soldering. During product reliability testing of circuit boards, it is necessary to test the pull-out force of the electronic components and evaluate the reliability of their connections based on this pull-out force.

[0003] The pulling fixtures used in related technologies are inconvenient to operate and may easily damage electronic components. Utility Model Content

[0004] This application provides a drawing device to solve the technical problems of drawing fixtures in related technologies being inconvenient to operate and easily damaging electronic components.

[0005] The embodiments of this application are implemented as follows: This application provides a pulling device for pulling a second workpiece from a first workpiece, the second workpiece being disposed on the first workpiece. The pulling device includes a mounting member, a first clamping member, a second clamping member, and a traction member. The mounting member has a first end and a second end disposed opposite to each other along a first direction. The first clamping member is fixedly connected to the first end and is used to abut against one side surface of the second workpiece. The middle portion of the second clamping member is rotatably connected to the mounting member. The second clamping member has a connecting end and a clamping end disposed opposite to each other along its length direction, the clamping end extending from the first end in a direction away from the second end. One end of the traction member is connected to the connecting end, and the other end of the traction member extends along the first direction close to the second end. The traction member is used to drive the connecting end to move closer to the first clamping member, so that the clamping end abuts against the other side surface of the second workpiece and clamps the second workpiece; the traction member is also used to drive the mounting member to move in a direction away from the first workpiece, so that the second workpiece is detached from the first workpiece.

[0006] According to the pulling device of this application, during the pulling process, the first clamping member first abuts against one side surface of the second workpiece. Then, by pulling the traction member, the second clamping member rotates relative to the first clamping member, and the clamping end approaches the first clamping member until the clamping end abuts against the other side surface of the second workpiece. Subsequently, the traction member moves further relative to the mounting member, causing the second clamping member to stably press the second workpiece against the first clamping member. At this time, the first clamping member, the second clamping member, and the second workpiece are held together by friction. Simultaneously, the first clamping member is fixedly connected to the first end, thus fixing the first clamping member, the second clamping member, the second workpiece, and the mounting member together. By continuing to apply force to the second clamping member through the traction member, a force is applied to the second workpiece to detach it from the first workpiece. By gradually increasing the force applied by the traction member to the second clamping member, the second workpiece can eventually detach from the first workpiece, thereby achieving the pulling of the second workpiece from the first workpiece.

[0007] When faced with small-sized pulling operations, the first clamping member is fixed in position, which allows it to stably support the second workpiece. By fixing the position of the mounting member and then pulling the traction member, the second workpiece can be clamped and pulled from the first workpiece. This method has the advantages of being easy to operate and having a wide range of applications.

[0008] In one possible implementation: The mounting member has a mounting hole extending through a first direction. The mounting hole has a first opening and a second opening. The first opening is located at the first end, and the second opening is located at the second end. One end of the traction member extends out from the second opening. One end of the first clamping member extends into the first opening and connects to the mounting member. The connecting end of the second clamping member extends into the first opening and connects to the other end of the traction member.

[0009] In one possible implementation: The mounting component has a third opening on its side wall, which extends through and connects the mounting hole and the first opening. The connecting end can rotate relative to the third opening to the mounting hole or to the outside of the mounting hole, so that the traction component drives the second clamping component to rotate.

[0010] In one possible implementation: The first clamping member includes a first main body, a first pivot portion, and a first clamping portion. The first main body is connected to the mounting member, the first pivot portion is connected to the side of the first main body opposite to the second end, and the first clamping portion is connected to the side of the first pivot portion opposite to the first main body. The second clamping member includes a second main body, a second pivot portion, and a second clamping portion. The second main body is connected to the mounting member, the second pivot portion is connected to the side of the second main body opposite to the second end, the second pivot portion is rotatably connected to the first pivot portion, and the second clamping portion is connected to the side of the second pivot portion opposite to the second main body. The first clamping portion and the second main body are spaced apart along a first direction, and the second clamping portion and the first main body are also spaced apart along a first direction.

[0011] In one possible implementation: The second pivot portion and the first pivot portion are distributed along a second direction, the second direction intersects the first direction at an angle or perpendicularly, the rotation direction of the second pivot portion and the first pivot portion is parallel to the second direction, the first clamping portion extends toward the second pivot portion along the second direction, and the second clamping portion extends toward the first pivot portion along the second direction.

[0012] In one possible implementation: The traction component includes a pull rope and a pull block. One end of the pull rope is connected to the connecting end, and the other end of the pull rope is connected to one end of the pull block. The other end of the pull block extends to the second end on the side opposite to the first end. The pull block is movably disposed on the mounting component.

[0013] In one possible implementation: The pulling device further includes a guide wheel rotatably connected to the mounting member. The guide wheel is located between the pulling block and the second clamping member. The pulling rope includes a first section and a second section. The first section is located on the radial side of the guide wheel and extends in a direction parallel to a first direction. One end of the first section is connected to the pulling block. One end of the second section is connected to the other end of the first section. The second section extends to the other radial side of the guide wheel, and the other end of the second section is connected to the second clamping member.

[0014] In one possible implementation: The outer circumferential surface of the guide wheel has a recessed annular guide groove, and the pull rope is fitted into the annular guide groove.

[0015] In one possible implementation: The mounting component is provided with a limiting part; the pull block includes a first pull part and a second pull part, the first pull part movably passes through the limiting part, the second pull part is located on the side of the limiting part near the second end, one end of the second pull part is connected to the first pull part, the other end of the second pull part is connected to the second clamping member, and at least a portion of the projection of the limiting part along the first direction coincides with the second pull part.

[0016] In one possible implementation: The pulling device further includes a reset member, which connects the first clamping member and the second clamping member. The reset member is used to apply a reset force to the second clamping member so that the second clamping member is kept at a distance from the first clamping member. Attached Figure Description

[0017] To more clearly illustrate the technical solutions of the embodiments of this application, the accompanying drawings in the embodiments will be briefly described below. It should be understood that the following drawings only show some embodiments of this application and should not be regarded as a limitation of the scope. For those skilled in the art, other related drawings can be obtained based on these drawings without creative effort.

[0018] Figure 1 This is a schematic diagram of the structure of a drawing device, a first workpiece, and a second workpiece according to an embodiment of this application.

[0019] Figure 2 This is a cross-sectional view of a drawing device, a first workpiece, and a second workpiece according to an embodiment of this application.

[0020] Figure 3 This is a partial structural diagram of the mounting component at the first end according to an embodiment of this application.

[0021] Figure 4 This is a schematic diagram of the structure of the first clamping member and the second clamping member according to an embodiment of this application.

[0022] Figure 5 This is a schematic diagram of the structure of the first clamping member and the second clamping member according to an embodiment of this application from another perspective.

[0023] Figure 6 for Figure 2 A magnified schematic diagram of the structure at point IX in the middle.

[0024] Figure 7 for Figure 2 A magnified schematic diagram of the structure at point V in the middle.

[0025] Explanation of key component symbols: Pulling device 100 Installation component 10 First end 10a Second end 10b Limiting part 11 First connecting wall 12 Second connecting wall 13 First clamping component 20 First Main Body Section 21 First pivot section 22 First clamping part 23 First groove C20 Second clamping component 30 Connection end 30a Clamping end 30b Second main body section 31 Second pivot part 32 Second clamping part 33 Second groove C30 40 traction components Pull rope 41 First paragraph 411 Second paragraph 412 Pull block 42 First pulling part 421 Second pulling part 422 Guide wheel 50 Annular guide groove C50 Reset component 60 End cap 70 Through hole K70 First connecting hole K41 Second connecting hole K42 Third connecting hole K43 Mounting hole K1 First opening K11 Second opening K12 Third opening K13 First workpiece 200 Second workpiece 300 First direction X Second direction Y The following detailed description, in conjunction with the accompanying drawings, further illustrates this application. Detailed Implementation

[0026] The technical solutions in the embodiments of this application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this application, and not all embodiments.

[0027] It should be noted that when a component is said to be "fixed to" another component, it can be directly on the other component or there may be an intervening component. When a component is said to be "connected to" another component, it can be directly connected to the other component or there may be an intervening component. When a component is said to be "set on" another component, it can be directly set on the other component or there may be an intervening component. The terms "vertical," "horizontal," "left," "right," and similar expressions used in this document are for illustrative purposes only.

[0028] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art. The terminology used herein in the specification of this application is for the purpose of describing particular embodiments only and is not intended to be limiting of the application. The term "or / and" as used herein includes any and all combinations of one or more of the associated listed items.

[0029] Some embodiments of this application are described in detail. Unless otherwise specified, the following embodiments and features can be combined with each other.

[0030] See Figure 1 and Figure 2 This embodiment provides a pulling device 100 for pulling a second workpiece 300 from a first workpiece 200, the second workpiece 300 being disposed on the first workpiece 200. The pulling device 100 includes a mounting member 10, a first clamping member 20, a second clamping member 30, and a traction member 40. The mounting member 10 has a first end 10a and a second end 10b disposed opposite to each other along a first direction X. The first clamping member 20 is fixedly connected to the first end 10a and is used to abut against one side surface of the second workpiece 300. The middle portion of the second clamping member 30 is rotatably connected to the mounting member 10, and the second clamping member 30 has a connecting end 30a and a clamping end 30b disposed opposite to each other along its length direction. The clamping end 30b extends from the first end 10a in a direction away from the second end 10b. One end of the traction member 40 is connected to the connecting end 30a. The other end of the traction member 40 extends along the first direction X near the second end 10b. The traction member 40 is used to drive the connecting end 30a to move closer to the first clamping member 20, so that the clamping end 30b abuts against the other side surface of the second workpiece 300 and clamps the second workpiece 300. The traction member 40 is also used to drive the mounting member 10 to move in a direction away from the first workpiece 200, so that the second workpiece 300 is disengaged from the first workpiece 200.

[0031] According to the drawing device 100 of this application, during the drawing process, the first clamping member 20 first abuts against one side surface of the second workpiece 300. Then, by pulling the traction member 40, the second clamping member 30 rotates relative to the first clamping member 20, and the clamping end 30b approaches the first clamping member 20 until the clamping end 30b abuts against the other side surface of the second workpiece 300. Subsequently, the traction member 40 moves further relative to the mounting member 10, so that the second clamping member 30 stably presses the second workpiece 300 against the first clamping member 20. At this time, the first clamping member 20, the second clamping member 30, and the second workpiece 300 are held in place by friction. At the same time, the first clamping member 20 is fixedly connected to the first end 10a, so that the first clamping member 20, the second clamping member 30, the second workpiece 300, and the mounting member 10 are fixed to each other. By continuing to apply force to the second clamping member 30 by the traction member 40, a force can be applied to the second workpiece 300 to separate it from the first workpiece 200. By gradually increasing the force exerted by the traction member 40 on the second clamping member 30, the second workpiece 300 can eventually be detached from the first workpiece 200, thereby achieving the pulling of the second workpiece 300 from the first workpiece 200.

[0032] When faced with small-sized pulling operations, the first clamping member 20 is fixed in position, which allows it to stably abut against the second workpiece 300. By fixing the position of the mounting member 10 and then pulling the traction member 40, the second workpiece 300 can be clamped and pulled from the first workpiece 200. This method has the advantages of being easy to operate and having a wide range of applications.

[0033] In related technologies, both the first clamping member 20 and the second clamping member 30 are movably configured relative to the mounting member 10. In this case, when positioning the second workpiece 300, the first clamping member 20 needs to be moved to the position furthest from the second clamping member 30 in order to position the second workpiece 300. This will result in the second clamping member 30 being unable to clamp the second workpiece 300 even when it moves to the position closest to the first clamping member 20, making the entire clamping process cumbersome. Furthermore, the position of the mounting member 10 relative to the first workpiece 200 may need to be moved during the operation. In addition, when clamping a small second workpiece 300, it is also difficult to directly align the second workpiece 300 with the space between the first clamping member 20 and the second clamping member 30. The pulling device 100, mounting part 10 and first clamping part 20 of this application can easily and stably abut against the second workpiece 300 and keep it in a fixed position. After that, only the traction part 40 needs to be pulled to make the second clamping part 30 abut against the second workpiece 300. Continuing to pull the traction part 40 can pull the second workpiece 300 from the first workpiece 200. It is easy to operate and has a wide range of applications.

[0034] According to the pull-out device 100 of this application, when it is necessary to detect the maximum pull-out force of the second workpiece 300 relative to the first workpiece 200, a traction member 40 can be connected through a pull-out force detection mechanism. The traction member 40 is moved by moving the pull-out force detection mechanism. During the pulling process, the pull-out force of the traction member 40 detected in real time by the pull-out force detection mechanism is the force acting on the second workpiece 300. Thus, the force detected by the pull-out force detection mechanism when the second workpiece 300 is separated from the first workpiece 200 is the maximum pull-out force of the second workpiece 300 relative to the first workpiece 200. The pull-out force detection mechanism can be a force gauge. The first workpiece 200 can be a circuit board. The second workpiece 300 can be an electronic component.

[0035] Therefore, the pull-out device 100 of this application can also be used for the pull-out force detection of products.

[0036] In some embodiments, the first clamping member 20 and the mounting member 10 are separately disposed, and the first clamping member 20 is connected to the mounting member 10 by a fastening structure. In other embodiments, the first clamping member 20 and the mounting member 10 may be constructed as an integrally formed component.

[0037] In some embodiments, see Figure 2 The mounting member 10 has a mounting hole K1 extending through the first direction X. The mounting hole K1 has a first opening K11 and a second opening K12. The first opening K11 is located at the first end 10a. The second opening K12 is located at the second end 10b. One end of the traction member 40 extends out from the second opening K12, one end of the first clamping member 20 extends into the first opening K11 and connects to the mounting member 10, and the connecting end 30a of the second clamping member 30 extends into the first opening K11 and connects to the other end of the traction member 40. In this way, the traction member 40 can be protected to prevent interference from other components and ensure the reliability of the movement of the traction member 40 driving the second clamping member 30.

[0038] In other embodiments, the first clamping member 20, the second clamping member 30, and the traction member 40 can all be disposed on one side of the mounting member 10.

[0039] In some embodiments, see Figure 3 A third opening K13 is provided on the side wall of the mounting component 10. The third opening K13 extends through and connects the mounting hole K1 and the first opening K11. The connecting end 30a can rotate relative to the third opening K13 to either inside or outside the mounting hole K1, so that the traction component 40 drives the second clamping component 30 to rotate. In this way, interference between the second clamping component 30 and the mounting component 10 can be avoided during the rotation of the second clamping component 30.

[0040] Optionally, see Figure 3The mounting component 10 has a first connecting wall 12 and a second connecting wall 13 at the connecting end 30a. The first connecting wall 12 and the first connecting wall 13 are spaced apart and form a third opening K13.

[0041] In some embodiments, see Figure 4 The first clamping member 20 includes a first main body portion 21, a first pivot portion 22, and a first clamping portion 23. The first main body portion 21 is connected to the mounting member 10, the first pivot portion 22 is connected to the side of the first main body portion 21 opposite to the second end 10b, and the first clamping portion 23 is connected to the side of the first pivot portion 22 opposite to the first main body portion 21. See also Figure 5 The second clamping member 30 includes a second main body portion 31, a second pivot portion 32, and a second clamping portion 33. The second main body portion 31 is connected to the mounting member 10. The second pivot portion 32 is connected to the side of the second main body portion 31 opposite to the second end 10b. The second pivot portion 32 is rotatably connected to the first pivot portion 22. The second clamping portion 33 is connected to the side of the second pivot portion 32 opposite to the second main body portion 31. The first clamping portion 23 and the second main body portion 31 are spaced apart along a first direction X, and the second clamping portion 33 and the first main body portion 21 are also spaced apart along the first direction X.

[0042] In this way, the overall thickness of the first clamping member 20 and the second clamping member 30 along the second direction Y can be shortened.

[0043] In some embodiments, see Figure 5 The second pivot portion 32 and the first pivot portion 22 are distributed along the second direction Y. The second direction Y intersects the first direction X at an angle or perpendicularly. The rotation direction of the second pivot portion 32 and the first pivot portion 22 is parallel to the second direction Y. The first clamping portion 23 extends along the second direction Y toward the second pivot portion 32, and the second clamping portion 33 extends along the second direction Y toward the first pivot portion 22. In this way, the width of the first clamping portion 23 along the second direction Y and the width of the second clamping portion 33 along the second direction Y can be extended, so that the first clamping portion 23 and the second clamping portion 33 can jointly achieve the clamping of the second workpiece 300 with a wider dimension in the second direction Y, thereby improving the applicability of the drawing device 100.

[0044] In some embodiments, see Figure 2The traction component 40 includes a pull rope 41 and a pull block 42. One end of the pull rope 41 is connected to the connecting end 30a, and the other end of the pull rope 41 is connected to one end of the pull block 42. The other end of the pull block 42 extends to the side of the second end 10b opposite to the first end 10a. The pull block 42 is movably mounted on the mounting component 10. Thus, by pulling the connecting end 30a with the pull rope 41, the second clamping component 30 can be rotated relative to the first clamping component 20, and the clamping end 30b can be brought closer to the first clamping component 20, thereby clamping the second workpiece 300. In addition, the pull rope 41 has a high degree of freedom. During the process of pulling the pull block 42, the pull rope 41 can swing with the rotation of the second clamping component 30, without the need for additional guide rails, sliders, or other structures, which can reduce the cost of the traction component 40 and improve the assembly efficiency of the pulling device 100.

[0045] In some embodiments, see Figure 2 One end of the pull block 42 is provided with a first connecting hole K41. One end of the pull rope 41 passes through the first connecting hole K41 and is connected to the pull block 42. A second connecting hole K42 is provided at the connecting end 30a. The other end of the pull rope 41 passes through the second connecting hole K42 and is connected to the connecting end 30a. The end of the pull block 42 opposite to the pull rope 41 is also provided with a third connecting hole K43. The third connecting hole K43 facilitates the connection of a tension detection component.

[0046] In some embodiments, see Figure 2 The pulling device 100 also includes a guide wheel 50. The guide wheel 50 is rotatably connected to the mounting member 10 and is located between the pull block 42 and the second clamping member 30. The pull rope 41 includes a first section 411 and a second section 412. The first section 411 is located on one radial side of the guide wheel 50, and its extension direction is parallel to the first direction X. One end of the first section 411 is connected to the pull block 42. One end of the second section 412 is connected to the other end of the first section 411, and the second section 412 extends to the other radial side of the guide wheel 50. The other end of the second section 412 is connected to the second clamping member 30. Thus, by pulling the first section 411 along the first direction X by the pull block 42, the second section 412 can drive the connecting end 30a to move radially along the guide wheel 50, thereby driving the clamping end 30b to move closer to the first clamping member 20, thereby clamping the first workpiece 200. During this process, the first segment 411 moves in the same direction as its extension. The connection between the first segment 411 and the second segment 412 is in line contact or surface contact with the guide wheel 50. This reduces the risk of rigid friction during the movement of the pull rope 41, thereby reducing the wear of the pull rope 41 and extending its service life.

[0047] In some embodiments, see Figure 2 and Figure 6The first segment 411, the first main body 21, and the second clamping part 33 are arranged correspondingly along the first direction X. The second main body 31 and the first clamping part 23 are arranged correspondingly along the first direction X. The extension direction of the second segment 412 is located between the first direction X and the second direction Y. Thus, when the first segment 411 is pulled along the first direction X, the second main body 31 can be driven to move closer to the first main body 21 along the second direction Y, causing the second clamping member 30 to rotate, thereby causing the second clamping part 33 to move closer to the first clamping part 23 along the second direction Y. By positioning the first segment 411 and the connecting end 30a on the radial sides of the guide wheel 50, the travel distance of the connecting end 30a along the second direction Y can be extended, thereby increasing the travel distance of the second clamping part 33 along the second direction Y, ensuring that the second clamping part 33 can stably clamp the second workpiece 300 to the first clamping part 23.

[0048] In some embodiments, see Figure 2 and Figure 6 The outer circumferential surface of the guide wheel 50 has a recessed annular guide groove C50. The pull rope 41 fits into the annular guide groove C50. The annular guide groove C50 can limit the pull rope 41, thereby greatly reducing the possibility of the pull rope 41 coming out of the annular guide groove C50 along the axial direction of the guide wheel 50, and ensuring the reliability of the movement of the pull rope 41.

[0049] Optionally, the cross-section of the annular guide groove C50 is semi-circular. In other embodiments, the cross-section of the annular guide groove C50 can also be constructed into various shapes such as a superior arc, a inferior arc, or an elliptical arc.

[0050] In some embodiments, see Figure 2 and Figure 7 The mounting component 10 is provided with a limiting part 11. The pull block 42 includes a first pull part 421 and a second pull part 422. The first pull part 421 movably passes through the limiting part 11, and the second pull part 422 is located on the side of the limiting part 11 near the second end 10b. One end of the second pull part 422 is connected to the first pull part 421, and the other end of the second pull part 422 is connected to the second clamping member 30. At least a portion of the projection of the limiting part 11 along the first direction X coincides with the second pull part 422. In this way, the limiting part 11 can limit the position of the second pull part 422, preventing the pull block 42 from disengaging from the mounting component 10.

[0051] Optionally, the limiting part 11 protrudes from the first end 10a onto the surface of the mounting hole K1.

[0052] In some embodiments, see Figure 6The pulling device 100 also includes a reset member 60, which connects the first clamping member 20 and the second clamping member 30. The reset member 60 applies a reset force to the second clamping member 30 to keep the second clamping member 30 spaced apart from the first clamping member 20. Thus, when the pulling member 40 is not subjected to a traction force, the first clamping member 20 and the second clamping member 30 remain spaced apart, ensuring that the first clamping member 20 is not interfered with by the second clamping member 30 during the positioning of the second workpiece 300, thereby guaranteeing the smooth positioning of the second workpiece 300.

[0053] Optionally, the reset member 60 can be constructed as an elastic element. The elastic element can be an elastic block or an elastic column, etc. The reset member 60 can also be constructed as a torsion spring. The torsion spring connects the first pivot portion 22 and the second pivot portion 32. The reset member 60 can also be constructed as a small motor or similar structure.

[0054] In other embodiments, the reset member 60 may also connect the second clamping member 30 to the mounting member 10.

[0055] In some embodiments, see Figure 6 A first groove C20 is formed on the surface of the first clamping member 20 facing the second clamping member 30. A second groove C30 is formed on the surface of the second clamping member 30 facing the first clamping member 20. One end of the resetting member 60 extends into the first groove C20. The other end of the resetting member 60 extends into the second groove C30. The first groove C20 and the second groove C30 can guide the movement of the resetting member 60.

[0056] In some embodiments, see Figure 7 The pulling device 100 also includes an end cap 70. The end cap 70 has a through hole K70 extending along a first direction X. One end of the end cap 70 extends into a mounting hole K1 and is connected to a first end 10a. The portion of the end cap 70 extending into the mounting hole K1 is formed as a limiting portion 11. A first pulling portion 421 is movably provided through the through hole K70.

[0057] The above embodiments are only used to illustrate the technical solutions of this application and are not intended to limit it. Although this application has been described in detail with reference to the above preferred embodiments, those skilled in the art should understand that modifications or equivalent substitutions to the technical solutions of this application should not depart from the spirit and scope of the technical solutions of this application.

Claims

1. A drawing device for drawing a second workpiece from a first workpiece, the second workpiece being disposed on the first workpiece, characterized in that, The drawing device includes: The mounting component has a first end and a second end disposed opposite to each other along a first direction; A first clamping member is fixedly connected to the first end and is used to abut against one side surface of the second workpiece. A second clamping member is rotatably connected to the mounting member at its middle portion. The second clamping member has a connecting end and a clamping end disposed opposite to each other along its length direction. The clamping end extends from the first end in a direction away from the second end. A traction member, one end of which is connected to the connecting end, and the other end of which extends along a first direction toward the second end. The traction member is used to drive the connecting end toward the first clamping member so that the clamping end abuts against the other side surface of the second workpiece and clamps the second workpiece. The traction member is also used to drive the mounting member to move away from the first workpiece so that the second workpiece is detached from the first workpiece.

2. The drawing device according to claim 1, characterized in that: The mounting member has a mounting hole extending through a first direction. The mounting hole has a first opening and a second opening. The first opening is located at the first end, and the second opening is located at the second end. One end of the traction member extends out from the second opening. One end of the first clamping member extends into the first opening and connects to the mounting member. The connecting end of the second clamping member extends into the first opening and connects to the other end of the traction member.

3. The drawing device according to claim 2, characterized in that: The mounting component has a third opening on its side wall, which extends through and connects the mounting hole and the first opening. The connecting end can rotate relative to the third opening to the mounting hole or to the outside of the mounting hole, so that the traction component drives the second clamping component to rotate.

4. The drawing device according to claim 1, characterized in that: The first clamping member includes a first main body, a first pivot part, and a first clamping part. The first main body is connected to the mounting member, the first pivot part is connected to the side of the first main body away from the second end, and the first clamping part is connected to the side of the first pivot part away from the first main body. The second clamping member includes a second main body, a second pivot part, and a second clamping part. The second main body is connected to the mounting member. The second pivot part is connected to the side of the second main body away from the second end. The second pivot part is rotatably connected to the first pivot part. The second clamping part is connected to the side of the second pivot part away from the second main body. The first clamping part and the second main body part are spaced apart along a first direction, and the second clamping part and the first main body part are spaced apart along a first direction.

5. The drawing device according to claim 4, characterized in that: The second pivot portion and the first pivot portion are distributed along a second direction, the second direction intersects the first direction at an angle or perpendicularly, the rotation direction of the second pivot portion and the first pivot portion is parallel to the second direction, the first clamping portion extends toward the second pivot portion along the second direction, and the second clamping portion extends toward the first pivot portion along the second direction.

6. The drawing device according to claim 1, characterized in that: The traction component includes a pull rope and a pull block. One end of the pull rope is connected to the connecting end, and the other end of the pull rope is connected to one end of the pull block. The other end of the pull block extends to the second end on the side opposite to the first end. The pull block is movably disposed on the mounting component.

7. The drawing device according to claim 6, characterized in that: The pulling device further includes a guide wheel rotatably connected to the mounting member. The guide wheel is located between the pulling block and the second clamping member. The pulling rope includes a first section and a second section. The first section is located on the radial side of the guide wheel and extends in a direction parallel to a first direction. One end of the first section is connected to the pulling block. One end of the second section is connected to the other end of the first section. The second section extends to the other radial side of the guide wheel, and the other end of the second section is connected to the second clamping member.

8. The drawing device according to claim 7, characterized in that: The outer circumferential surface of the guide wheel has a recessed annular guide groove, and the pull rope is fitted into the annular guide groove.

9. The drawing device according to claim 6, characterized in that: The mounting component is provided with a limiting part; The pull block includes a first pull part and a second pull part. The first pull part can movably pass through the limiting part. The second pull part is located on the side of the limiting part near the second end. One end of the second pull part is connected to the first pull part, and the other end of the second pull part is connected to the second clamping member. At least a portion of the projection of the limiting part along the first direction coincides with the second pull part.

10. The drawing device according to any one of claims 1 to 9, characterized in that: The pulling device further includes a reset member, which connects the first clamping member and the second clamping member. The reset member is used to apply a reset force to the second clamping member so that the second clamping member is kept at a distance from the first clamping member.

Images