A clamping tool for rapid feeding

Abstract

The utility model relates to a kind of clamping tool for quick feeding, comprising: first clamping component, first clamping piece is slidably connected with first mounting seat, first elastic piece is connected between first clamping piece and base, first clamping piece is equipped with first positioning hole, first mounting seat is equipped with second positioning hole, the central axis of first positioning hole is parallel with the central axis of second positioning hole, and the central axis of first positioning hole can be collinear with the central axis of second positioning hole, when first elastic piece is at natural length, the clamping end of first clamping piece is located at the edge of positioning groove, and the central axis of first positioning hole is located between the central axis of second positioning hole and the side wall of second positioning hole;Feeding assembly, multiple first positioning columns are equipped on support plate, the diameter of first positioning column gradually decreases away from support plate direction, and first positioning column can penetrate first positioning hole and second positioning hole.The utility model relates to a kind of clamping tool for quick feeding, and can improve feeding efficiency.

Description

Technical Field

[0001] This utility model relates to the field of clamping tooling technology, and in particular to a clamping tooling for rapid material loading. Background Technology

[0002] A foldable phone is a smartphone that uses flexible screen technology and can fold like a book. A hinge structure connects a flexible display screen, allowing the device to function in different forms when unfolded and folded. The hinge structure is assembled from various parts, some of which are machined from raw materials using non-standard cutting tools. To ensure machining accuracy, a clamping fixture is needed to fix the position of the raw material. A movable block on the clamping fixture is pressed against the raw material by a spring, thus fixing the raw material in place. Currently, when placing the raw material into the clamping position of the fixture, the movable block must first be pressed to move it away from the clamping position, then the raw material is placed in the clamping position, and the pressing of the movable block is stopped, allowing it to abut against the raw material, at which point the raw material is fixed. Since a single clamping fixture needs to fix multiple raw materials, the above loading steps need to be repeated multiple times, resulting in low loading efficiency. Utility Model Content

[0003] Therefore, the technical problem to be solved by this utility model is to provide a clamping fixture for rapid material feeding, which can improve feeding efficiency.

[0004] To solve the above-mentioned technical problems, this utility model provides a clamping fixture for rapid material loading, comprising: a base with a plurality of positioning grooves; a first clamping assembly, the first clamping assembly including a first clamping member, a first mounting base, and a first elastic member, the first mounting base being connected to the base, the first clamping member being slidably connected to the first mounting base, the first elastic member being connected between the first clamping member and the base, the clamping end of the first clamping member being able to be located at the edge of the positioning groove, the first clamping member having a first positioning hole, the first mounting base having a second positioning hole, and the first positioning... The central axis of the first positioning hole is parallel to the central axis of the second positioning hole, and the central axis of the first positioning hole and the central axis of the second positioning hole can be collinear. When the first elastic member is at its natural length, the clamping end of the first clamping member is located at the edge of the positioning groove, and the central axis of the first positioning hole is located between the central axis of the second positioning hole and the side wall of the second positioning hole. The feeding assembly includes a support plate, on which a plurality of first positioning posts are provided. The diameter of the first positioning posts gradually decreases in the direction away from the support plate, and the first positioning posts can penetrate the first positioning hole and the second positioning hole.

[0005] In one embodiment of the present invention, the diameter of the first positioning hole gradually decreases in the direction away from the first mounting base, and the sidewall of the first positioning hole can fit against the sidewall of the first positioning post.

[0006] In one embodiment of the present invention, a second clamping assembly is further included. The second clamping assembly includes a connecting block, a second clamping member, a second mounting base, and a second elastic member. The second mounting base and the connecting block are both connected to the base. The second clamping member is slidably connected to the second mounting base. The second elastic member is connected between the connecting block and the second clamping member. The movement path of the second clamping member is perpendicular to the movement path of the first clamping member.

[0007] In one embodiment of the present invention, the first mounting base abuts against the second mounting base, and the edge of the first mounting base is provided with a first connecting groove, and the edge of the second mounting base is provided with a second connecting groove, the first connecting groove and the second connecting groove forming a connecting hole.

[0008] In one embodiment of the present invention, the first clamping member has a protrusion at one end near the positioning groove.

[0009] In one embodiment of the present invention, the first mounting base is provided with a sliding groove, the edge of the end of the sliding groove is provided with a stop block, the first clamping member is provided with a locking block, and the locking block is located between the stop block and the bottom of the sliding groove.

[0010] In one embodiment of this utility model, a pressure plate is also included. The base is provided with a first mounting hole, a pad, and at least two second positioning posts. The pressure plate is provided with a second mounting hole and a third positioning hole. The pressure plate abuts against the pad, and the first mounting hole and the second mounting hole are connected by fasteners. The second positioning post is engaged with the third positioning hole.

[0011] In one embodiment of the present invention, the pressure plate includes a boss that can extend into the positioning groove.

[0012] In one embodiment of the present invention, the feeding assembly further includes a support frame and a third clamping member, the support plate is located on the support frame, the third clamping member is connected to the support frame, and the clamping end of the third clamping member can abut against the support plate.

[0013] In one embodiment of the present invention, the feeding assembly further includes a driving component, a third positioning post and a guide post are connected to the support frame, the third positioning post passes through the support plate and is slidably connected to the support plate, the guide post abuts against the edge of the support plate, the driving component is connected to the support frame, and the output end of the driving component is connected to the support plate.

[0014] The above-mentioned technical solution of this utility model has the following advantages compared with the prior art:

[0015] The present invention provides a clamping fixture for rapid material loading. By setting a first positioning hole on the first clamping member and a second positioning hole on the first mounting base, and by arranging the central axis of the first positioning hole to be located between the central axis of the second positioning hole and the side wall of the second positioning hole when the first elastic member is at its natural length, the first and second positioning holes are misaligned when the first elastic member is at its natural length. The first positioning post ensures that the central axes of the first and second positioning holes are collinear, thereby compressing the elastic member and moving the first clamping member away from the positioning groove. This eliminates the need to press the first clamping member during material loading, thus improving loading efficiency. Attached Figure Description

[0016] To make the content of this utility model easier to understand, the present utility model will be further described in detail below with reference to specific embodiments and accompanying drawings.

[0017] Figure 1 This is a schematic diagram of the structure of a clamping fixture for rapid material loading according to this utility model;

[0018] Figure 2 yes Figure 1 Partial structural diagram;

[0019] Figure 3 This is a schematic diagram of the structure of the first clamping component and the second clamping component;

[0020] Figure 4 This is a partial top view of the structure of the first clamping component;

[0021] Figure 5 yes Figure 4 Sectional view at point AA;

[0022] Figure 6 This is a structural diagram of the feeding assembly;

[0023] Figure 7 This is a schematic diagram of the pressure plate structure.

[0024] Explanation of reference numerals in the accompanying drawings: 1. Base; 2. Pressure plate; 3. First clamping assembly; 4. Second clamping assembly; 5. Support frame; 11. Fourth positioning hole; 12. Positioning groove; 13. Second positioning post; 14. First mounting hole; 15. Pad; 21. Boss; 22. Third positioning hole; 23. Second mounting hole; 24. Machining hole; 31. First clamping member; 32. First mounting base; 33. First elastic member; 34. First positioning hole; 35. Stop block; 36. Protrusion; 37. First connecting groove; 38. Locking block; 39. Second positioning hole; 41. Second clamping member; 42. Second mounting base; 43. Second elastic member; 44. Connecting block; 45. Second connecting groove; 51. Driving member; 52. Third clamping member; 53. Support plate; 54. Third positioning post; 55. Guide post; 56. First positioning post. Detailed Implementation

[0025] The present invention will be further described below with reference to the accompanying drawings and specific embodiments, so that those skilled in the art can better understand and implement the present invention. However, the embodiments are not intended to limit the present invention.

[0026] Reference Figures 1 to 6 As shown, a clamping fixture for rapid material loading according to this utility model includes: a base 1, on which a plurality of positioning grooves 12 are provided; a first clamping assembly 3, the first clamping assembly 3 including a first clamping member 31, a first mounting base 32 and a first elastic member 33, the first mounting base 32 being connected to the base 1, the first clamping member 31 being slidably connected to the first mounting base 32, the first elastic member 33 being connected between the first clamping member 31 and the base 1, the clamping end of the first clamping member 31 being able to be located at the edge of the positioning groove 12, the first clamping member 31 being provided with a first positioning hole 34, the first mounting base 32 being provided with a second positioning hole 39, the first positioning hole 34 being provided with a first positioning hole 34. The central axis is parallel to the central axis of the second positioning hole 39, and the central axis of the first positioning hole 34 is collinear with the central axis of the second positioning hole 39. When the first elastic member 33 is at its natural length, the clamping end of the first clamping member 31 is located at the edge of the positioning groove 12, and the central axis of the first positioning hole 34 is located between the central axis of the second positioning hole 39 and the side wall of the second positioning hole 39. The feeding assembly includes a support plate 53, on which a plurality of first positioning posts 56 are provided. The diameter of the first positioning posts 56 gradually decreases in the direction away from the support plate 53, and the first positioning posts 56 can penetrate the first positioning hole 34 and the second positioning hole 39.

[0027] In this embodiment, the clamping fixture for rapid feeding is used to feed blanks. When the blanks need to be fed, the base 1 is placed on the support plate 53, so that the first positioning post 56 passes through the second positioning hole 39 and the first positioning hole 34 in sequence. At this time, the first elastic member 33 is compressed, the central axis of the first positioning hole 34 is collinear with the central axis of the second positioning hole 39, and the clamping end of the first clamping member 31 is away from the positioning groove 12. Then, multiple blanks are placed in multiple positioning grooves 12 in sequence. After the placement is completed, the base 1 is moved away from the support plate 53, so that the first positioning hole 34 and the second positioning hole 39 are disengaged from the first positioning post 56. At this time, the first elastic member 33 drives the first clamping member 31 to clamp the blanks, thereby fixing the position of the blanks. By setting the first positioning hole 34 on the first clamping member 31 and the second positioning hole 39 on the first mounting base 32, and by setting the central axis of the first positioning hole 34 to be located between the central axis of the second positioning hole 39 and the side wall of the second positioning hole 39 when the first elastic member 33 is at its natural length, the first positioning hole 34 and the second positioning hole 39 are misaligned when the first elastic member 33 is at its natural length. By setting the first positioning post 56, the central axes of the first positioning hole 34 and the second positioning hole 39 are collinear, thereby compressing the elastic member and moving the first clamping member 31 away from the positioning groove 12. When loading materials, it is not necessary to press the first clamping member 31, thereby improving the loading efficiency.

[0028] Reference Figure 2 As shown, the base 1 is generally flat, and the top of the base 1 is provided with multiple positioning grooves 12. Specifically, the multiple positioning grooves 12 are symmetrically arranged about the transverse center line of the base 1. In this embodiment, the base 1 is provided with a total of sixteen positioning grooves 12. The number of positioning grooves 12 can be set according to different external processing equipment. The base 1 is also provided with a first mounting hole 14, a pad 15, and at least two second positioning posts 13 located between two adjacent symmetrically arranged positioning grooves 12. The first mounting hole 14 can be regarded as a threaded hole and is located in the middle position. The top side of the pad 15 is located on the same plane. In this embodiment, there are two pads 15 and two second positioning posts 13. The first mounting hole 14 is located between two pads 15 and also between two second positioning posts 13.

[0029] Reference Figure 7As shown, the clamping fixture for rapid loading also includes a pressure plate 2. The pressure plate 2 has a second mounting hole 23 corresponding to the position of the first mounting hole 14 and a third positioning hole 22 corresponding to the position of the second positioning post 13. The second mounting hole 23 can be regarded as a threaded hole. When the pressure plate 2 is connected to the base 1, the pressure plate 2 abuts against the top side of the pad 15, thereby keeping the pressure plate 2 parallel to the base 1. The second positioning post 13 passes through the third positioning hole 22 and engages with the third positioning hole 22, thereby positioning the pressure plate 2. The first mounting hole 14 and the second mounting hole 23 are connected by fasteners, which can be regarded as bolts, thereby fixing the position of the pressure plate 2. The bottom of the pressure plate 2 near the positioning groove 12 is also provided with a boss 21. The boss 21 can extend into the positioning groove 12, so that after the pressure plate 2 is connected to the base 1, it can abut against the blank in the positioning groove 12, thereby fixing the position of the blank. The pressure plate 2 is also provided with a machining hole 24 that communicates with the positioning groove 12. The cutting tool of the external machining equipment can pass through the machining hole 24 to process the blank located in the positioning groove 12.

[0030] Reference Figures 2 to 5 As shown, the first clamping assembly 3 includes a first clamping member 31, a first mounting base 32, and a first elastic member 33. The first mounting base 32 is connected to the base 1. Specifically, the base 1 has a mounting groove, and the first mounting base 32 is located in the mounting groove and connected to the bottom of the mounting groove. The first clamping member 31 is slidably connected to the first mounting base 32. Specifically, the first mounting base 32 has a sliding groove, and the edge of the end of the sliding groove has a stop 35 extending in the opposite direction. The bottom of the opposite side wall of the first clamping member 31 has a locking block 38, which is located between the stop 35 and the bottom of the sliding groove. This allows the first clamping member 31 to be slidably connected to the first mounting base 32 while simultaneously locking it in place. That is, the sliding groove can guide the first clamping member 31 and also prevent the first clamping member 31 from detaching from the first mounting base 32.

[0031] The first elastic element 33 can be considered as a spring. The first elastic element 33 is connected between the first clamping member 31 and the base 1. Specifically, the first elastic element 33 can be considered as a spring. One end of the first elastic element 33 is connected to the side of the first clamping member 31 away from the positioning groove 12, and the other end of the first elastic element 33 is connected to the side wall of the mounting groove. The end of the first clamping member 31 near the positioning groove 12 is provided with a protrusion 36. The protrusion 36 can be considered as the clamping end of the first clamping member 31. The first elastic element 33 enables the protrusion 36 to be located at the edge of the positioning groove 12. The protrusion 36 is used to abut against the blank material in the positioning groove 12, so that the blank material is clamped between the side wall of the positioning groove 12 and the protrusion 36.

[0032] The first clamping member 31 has a through-hole 34, and the first mounting base 32 has a through-hole 39. Both the first positioning hole 34 and the second positioning hole 39 are perpendicular to the base 1. The central axis of the first positioning hole 34 is parallel to the central axis of the second positioning hole 39, and the movement of the first clamping member 31 makes the central axis of the first positioning hole 34 and the central axis of the second positioning hole 39 collinear, that is, the first positioning hole 34 and the second positioning hole 39 are completely connected. When the first elastic member 33 is at its natural length, the clamping end of the first clamping member 31 is located at the edge of the positioning groove 12, that is, the first clamping member 31 is in a clamping state on the blank. At the same time, the central axis of the first positioning hole 34 is located between the central axis of the second positioning hole 39 and the side wall of the second positioning hole 39, and the central axis of the first positioning hole 34 is located between the central axis of the positioning groove 12 and the central axis of the second positioning hole 39, that is, the first positioning hole 34 and the second positioning hole 39 are offset and partially connected.

[0033] Reference Figure 6 As shown, the feeding assembly includes a support plate 53, on which a plurality of first positioning posts 56 are provided. The diameter of the first positioning posts 56 gradually decreases in the direction away from the support plate 53. Specifically, the top diameter of the first positioning posts 56 gradually decreases in the direction away from the support plate 53, thereby making the top of the first positioning posts 56 conical. By moving the base 1, the first positioning posts 56 can pass through the first positioning hole 34 and the second positioning hole 39. Due to the conical shape of the top of the first positioning posts 56, the first positioning posts 56 can pass through the communication position between the first positioning hole 34 and the second positioning hole 39, thereby making the central axes of the first positioning hole 34 and the second positioning hole 39 collinear. The first elastic member 33 is compressed, and the first clamping member 31 moves away from the positioning groove 12. Preferably, the diameter of the first positioning hole 34 gradually decreases in the direction away from the first mounting base 32, so that the first positioning hole 34 is tapered, and the side wall of the first positioning hole 34 can fit with the side wall of the first positioning post 56, so that the engagement between the first clamping member 31 and the first positioning post 56 is more stable and the first clamping member 31 is prevented from shaking.

[0034] Reference Figure 3As shown, the clamping fixture for rapid loading also includes a second clamping assembly 4. The second clamping assembly 4 includes a connecting block 44, a second clamping member 41, a second mounting base 42, and a second elastic member 43. Both the second mounting base 42 and the connecting block 44 are connected to the base 1. The second clamping member 41 is slidably connected to the second mounting base 42. The second elastic member 43 is connected between the connecting block 44 and the second clamping member 41. Specifically, the second elastic member 43 can be considered as a spring. One end of the second elastic member 43 is connected to the side of the second clamping member 41 away from the positioning groove 12, and the other end of the second elastic member 43 is connected to the connecting block 44. The moving path of the second clamping member 41 is perpendicular to the moving path of the first clamping member 31. The second clamping member 41 and the first clamping member 31 can simultaneously clamp the blank material located in the positioning groove 12 from two vertical directions, thereby making the fixation of the blank material in the positioning groove 12 more stable. The second clamping member 41 can also move via the first positioning post 56. That is, the support plate 53 is also provided with a fourth positioning post corresponding to the position of the second clamping member 41. The fourth positioning post has the same structure as the first positioning post 56. The working principle of the second clamping member 41 is the same as that of the first clamping member 31, and will not be described again.

[0035] The first mounting base 32 abuts against the second mounting base 42, and the abutment position between the first mounting base 32 and the second mounting base 42 is inclined. The edge of the first mounting base 32 is provided with a first connecting groove 37, and the edge of the second mounting base 42 is provided with a second connecting groove 45 corresponding to the position of the first connecting groove 37. The ends of the first connecting groove 37 and the second connecting groove 45 are both semi-circular, so that the first connecting groove 37 and the second connecting groove 45 form a connecting hole. The first mounting base 32 and the second mounting base 42 can be positioned and fixed by the cooperation of bolts and connecting holes.

[0036] Reference Figure 6 As shown, the feeding assembly also includes a support frame 5 and a third clamping member 52. The support plate 53 is located on the top side of the support frame 5, and the two third clamping members 52 are connected to the top side of the support frame 5. The support plate 53 is located between the third clamping members 52. The third clamping member 52 can be regarded as a quick clamping mechanism. The clamping end of the third clamping member 52 can abut against the support plate 53, that is, the support plate 53 can be clamped between the support frame 5 and the clamping end of the third clamping member 52, thereby fixing the position of the support plate 53.

[0037] The feeding assembly also includes a drive unit 51, which can be considered as a linear cylinder. Two third positioning posts 54 and four guide posts 55 are connected to the support frame 5. The third positioning posts 54 penetrate the support plate 53, thereby positioning the support plate 53. Specifically, a fourth positioning hole 11 is provided on the support plate 53 corresponding to the position of the third positioning post 54. The third positioning post 54 passes through the fourth positioning hole 11 and engages with it. All four guide posts 55 abut against the edge of the support plate 53. The drive unit 51 is connected to the support frame 5, and its output end is connected to the bottom of the support plate 53. The drive unit 51 can drive the support plate 53 to move vertically, and the guide posts 55 can guide the movement of the support plate 53. When the base 1 is placed on the support plate 53, the clamping end of the third clamping member 52 can abut against the base 1, thereby clamping the base 1 and the support plate 53. The support plate 53 is driven by the driving member 51 to squeeze the base 1, so that the base 1 and the clamping member are tightly fitted, thereby preventing the base 1 from shaking and improving the feeding accuracy.

[0038] In use, the base 1 is placed on the support plate 53, so that the first positioning post 56 passes through the second positioning hole 39 and the first positioning hole 34 in sequence, while the fourth positioning post passes through the second mounting base 42 and the second clamping member 41. At this time, both the first elastic member 33 and the second elastic member 43 are compressed. The central axis of the first positioning hole 34 is collinear with the central axis of the second positioning hole 39. The clamping end of the first clamping member 31 is away from the positioning groove 12, and the clamping end of the second clamping member 41 is also away from the positioning groove 12. Then the third clamping member 52 clamps the base 1 and the support plate. 53 clamps the blanks, and the driving member 51 drives the support plate 53 to press the base 1, placing multiple blanks into multiple positioning slots 12 in sequence. After placement, the pressure plate 2 is connected to the base 1, thereby fixing the position of the blanks. The base 1 is moved away from the support plate 53, thereby disengaging the first positioning hole 34 and the second positioning hole 39 from the first positioning post 56. At this time, the first elastic member 33 drives the first clamping member 31 to clamp the blanks, and the second elastic member 43 drives the second clamping member 41 to clamp the blanks, thereby stabilizing and fixing the position of the blanks.

[0039] This utility model discloses a clamping fixture for rapid material loading. Through the arrangement of a first positioning hole 34 on the first clamping member 31 and a second positioning hole 39 on the first mounting base 32, and the arrangement of the central axis of the first positioning hole 34 located between the central axis of the second positioning hole 39 and the side wall of the second positioning hole 39 when the first elastic member 33 is at its natural length, the first positioning hole 34 and the second positioning hole 39 are misaligned when the first elastic member 33 is at its natural length. The arrangement of the first positioning post 56 ensures that the central axes of the first positioning hole 34 and the second positioning hole 39 are collinear, thereby compressing the elastic member and moving the first clamping member 31 away from the positioning groove 12. Therefore, it is not necessary to press the first clamping member 31 during material loading, thus improving loading efficiency.

[0040] Obviously, the above embodiments are merely illustrative examples for clear explanation and are not intended to limit the implementation. Those skilled in the art will recognize that other variations or modifications can be made based on the above description. It is neither necessary nor possible to exhaustively list all possible implementations here. However, obvious variations or modifications derived therefrom are still within the protection scope of this invention.

Claims

1. A clamping fixture for rapid material loading, characterized in that, include: A base, wherein the base is provided with multiple positioning grooves; A first clamping assembly includes a first clamping member, a first mounting base, and a first elastic member. The first mounting base is connected to the base, the first clamping member is slidably connected to the first mounting base, and the first elastic member is connected between the first clamping member and the base. The clamping end of the first clamping member can be located at the edge of the positioning groove. The first clamping member is provided with a first positioning hole, and the first mounting base is provided with a second positioning hole. The central axis of the first positioning hole is parallel to the central axis of the second positioning hole, and the central axis of the first positioning hole and the central axis of the second positioning hole can be collinear. When the first elastic member is at its natural length, the clamping end of the first clamping member is located at the edge of the positioning groove, and the central axis of the first positioning hole is located between the central axis of the second positioning hole and the side wall of the second positioning hole. The feeding assembly includes a support plate, on which a plurality of first positioning posts are provided. The diameter of the first positioning posts gradually decreases in the direction away from the support plate, and the first positioning posts can penetrate through the first positioning hole and the second positioning hole.

2. The clamping fixture for rapid loading according to claim 1, characterized in that: The diameter of the first positioning hole gradually decreases in the direction away from the first mounting base, and the sidewall of the first positioning hole can fit against the sidewall of the first positioning post.

3. The clamping fixture for rapid loading according to claim 1, characterized in that: It also includes a second clamping assembly, which includes a connecting block, a second clamping member, a second mounting base, and a second elastic member. The second mounting base and the connecting block are both connected to the base. The second clamping member is slidably connected to the second mounting base. The second elastic member is connected between the connecting block and the second clamping member. The movement path of the second clamping member is perpendicular to the movement path of the first clamping member.

4. The clamping fixture for rapid loading according to claim 3, characterized in that: The first mounting base abuts against the second mounting base, and the edge of the first mounting base is provided with a first connecting groove, and the edge of the second mounting base is provided with a second connecting groove. The first connecting groove and the second connecting groove form a connecting hole.

5. The clamping fixture for rapid loading according to claim 1, characterized in that: The first clamping member has a protrusion at one end near the positioning groove.

6. The clamping fixture for rapid loading according to claim 1, characterized in that: The first mounting base is provided with a sliding groove, and a stop is provided at the edge of the end of the sliding groove. The first clamping member is provided with a locking block, which is located between the stop and the bottom of the sliding groove.

7. The clamping fixture for rapid loading according to claim 1, characterized in that: It also includes a pressure plate. The base is provided with a first mounting hole, a pad, and at least two second positioning posts. The pressure plate is provided with a second mounting hole and a third positioning hole. The pressure plate abuts against the pad, and the first mounting hole and the second mounting hole are connected by fasteners. The second positioning post is engaged with the third positioning hole.

8. The clamping fixture for rapid loading according to claim 7, characterized in that: The pressure plate includes a boss that can extend into the positioning groove.

9. The clamping fixture for rapid loading according to claim 1, characterized in that: The feeding assembly also includes a support frame and a third clamping member. The support plate is located on the support frame, the third clamping member is connected to the support frame, and the clamping end of the third clamping member can abut against the support plate.

10. The clamping fixture for rapid loading according to claim 9, characterized in that: The feeding assembly also includes a driving component. A third positioning post and a guide post are connected to the support frame. The third positioning post passes through the support plate and is slidably connected to the support plate. The guide post abuts against the edge of the support plate. The driving component is connected to the support frame, and the output end of the driving component is connected to the support plate.

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