Clamp for UV printing

Abstract

The utility model discloses a UV printing clamp which comprises a platform, a first clamping assembly, a second clamping assembly and a driving mechanism, the first clamping assembly comprises two first clamping pieces which are oppositely arranged in the first direction of the platform, and the second clamping piece comprises two second clamping pieces which are oppositely arranged in the second direction of the platform. The second clamping assembly comprises two second clamping pieces which are oppositely arranged in the second direction of the platform, the second direction is perpendicular to the first direction, and a first clamping space is defined by the two first clamping pieces and the two second clamping pieces; and the driving mechanism is used for driving the first clamping assembly and the second clamping assembly to synchronously move towards each other or synchronously move away from each other, so that a printed piece is clamped or released through the two first clamping pieces and the two second clamping pieces. The fixture can quickly and accurately print articles with different sizes, does not need to spend a lot of time in debugging the placement positions of the articles, reduces the risk of incorrect printing positions, and improves the printing efficiency.

Description

Technical Field

[0001] The utility model relates to the technical field of jigs, in particular to a jig for UV printing. Background Art

[0002] With the improvement of people's living standards and the change of consumption concepts, the personalized demand for products is increasing day by day. The UV printing technology, with its unique advantages, can meet the personalized and customized needs of consumers for various items, so it has been widely used in the market. Since different items have different sizes, each time of printing requires adjusting the size and position of the printed pattern, and it is very difficult to ensure that the position of the item placed is appropriate. If the position of the item placed is incorrect, the pattern will not be fully printed, affecting the beauty of the item, not only increasing the error cost, but also requiring more time to determine the accurate position of the placed item, giving customers a bad experience. Content of the Utility Model

[0003] Aiming at the defects existing in the above prior art, the utility model provides a jig for UV printing, which can quickly and accurately print items of different sizes, without spending a lot of time adjusting the placement position of the item, reducing the risk of incorrect printing position and improving the printing efficiency.

[0004] The utility model is realized by adopting the following technical solutions:

[0005] A jig for UV printing includes a platform, a first clamping assembly, a second clamping assembly and a driving mechanism. The first clamping assembly includes two first clamping members oppositely arranged in a first direction of the platform. The second clamping assembly includes two second clamping members oppositely arranged in a second direction of the platform. The second direction is perpendicular to the first direction. The two first clamping members and the two second clamping members enclose a first clamping space. The driving mechanism is used to drive the first clamping assembly and the second clamping assembly to move synchronously towards each other or synchronously away from each other, so as to clamp or release the item to be printed by the two first clamping members and the two second clamping members.

[0006] Further, the first clamping assembly further includes third clamping members respectively detachably installed on the two first clamping members. The two third clamping members are oppositely arranged in the first direction;

[0007] The second clamping assembly further includes fourth clamping members respectively detachably installed on the two second clamping members. The two fourth clamping members are oppositely arranged in the second direction;

[0008] The two third clamping members and the two fourth clamping members enclose a second clamping space, and the second clamping space is smaller than the first clamping space.

[0009] Further, the third clamping member is rotatably connected to the first clamping member through a first rotating shaft. At positions corresponding to the first clamping member and the third clamping member, there are first pivot through holes for the first rotating shaft to pass through. The fourth clamping member is rotatably connected to the second clamping member through a second rotating shaft. At positions corresponding to the second clamping member and the fourth clamping member, there are second pivot through holes for the second rotating shaft to pass through.

[0010] Further, a first groove for restricting the rotation of the third clamping member is provided on the first clamping member. The first pivot through hole of the first clamping member is located in the first groove. A second groove for restricting the rotation of the fourth clamping member is provided on the second clamping member. The second pivot through hole of the second clamping member is located in the second groove.

[0011] Further, the first clamping assembly further includes two first moving plates arranged in parallel. The two first clamping members are respectively connected to the corresponding first moving plates. On the opposite sides of the two first moving plates, there are first racks extending in the first direction. The second clamping assembly further includes two second moving plates arranged in parallel. The two second clamping members are respectively connected to the corresponding second moving plates. On the opposite sides of the two second moving plates, there are second racks extending in the second direction. The driving mechanism includes a vertically arranged rotating member, a first gear and a second gear vertically mounted on the rotating member, and a driving member for driving the rotating member to rotate. The first gear is located between the two first moving plates and meshes with the two first racks. The second gear is located between the two second moving plates and meshes with the two second racks.

[0012] Further, the first clamping assembly further includes a first buffer assembly respectively connected to the two first moving plates. The second clamping assembly further includes a second buffer assembly respectively connected to the two second moving plates.

[0013] Further, the first buffer assembly includes a first tension spring extending in the first direction and a first pull rod for connecting the first tension spring to the first moving plate. The first pull rod is vertically arranged. One end of the first tension spring is fixed, and the other end is connected to the lower end of the first pull rod. The upper end of the first pull rod is connected to the first moving plate. The second buffer assembly includes a second tension spring extending in the second direction and a second pull rod for connecting the second tension spring to the second moving plate. The second pull rod is vertically arranged. One end of the second tension spring is fixed, and the other end is connected to the lower end of the second pull rod. The upper end of the second pull rod is connected to the second moving plate.

[0014] Further, a first guiding through hole extending in a first direction and a second guiding through hole extending in a second direction are provided on the platform. The first clamping member includes a first clamping portion and a first connecting portion connected to each other. After the first connecting portion passes through the first guiding through hole, it is connected to the first moving plate. The second clamping member includes a second clamping portion and a second connecting portion connected to each other. After the second connecting portion passes through the second guiding through hole, it is connected to the second moving plate.

[0015] Further, it further includes a first support plate and a second support plate connected to the platform. The first support plate is located below the platform. The second support plate is located below the first support plate and is perpendicularly arranged with respect to the first support plate. The first support plate and the second support plate are respectively provided with a first through hole and a second through hole for the rotating member to pass through. The first support plate is provided with two first sliding grooves extending in the first direction for the first moving plate to slide, and the second support plate is provided with two second sliding grooves extending in the second direction for the second moving plate to slide.

[0016] Further, both the first tension spring and the second tension spring are located below the second support plate. The first support plate is provided with a first avoiding through hole for the first pull rod to extend into the first sliding groove, and the second support plate is provided with a second avoiding through hole for the second pull rod to extend into the second sliding groove. The first avoiding through hole extends in the first direction, and the second avoiding through hole extends in the second direction.

[0017] Compared with the prior art, the beneficial effects of the present utility model at least include:

[0018] The printed part of the present utility model is placed in the clamping area of the platform. Then, the driving mechanism drives the first clamping assembly and the second clamping assembly to move synchronously towards each other, so that the two first clamping members and the two second clamping members move synchronously along the first direction and the second direction respectively to clamp the printed part, so as to achieve the effect of centering the clamped printed part, thereby making the center point of the printed part coincide with the center point of the fixture. Since the position of the fixture on the printing platform is fixed, when setting the printing pattern, it only needs to ensure that the center point of the pattern coincides with the center point of the fixture, then the center point of the fixture, the center point of the printed part, and the center point of the printing pattern can coincide. Thus, it is not necessary to spend a lot of time adjusting the placement position of the printed part, reducing the risk of incorrect printing position and improving the printing efficiency and quality. Description of the Drawings

[0019] Figure 1 is one of the schematic diagrams of the fixture for UV printing according to an embodiment of the present utility model;

[0020] Figure 2 is the second schematic diagram of the fixture for UV printing according to an embodiment of the present utility model, and the platform is not shown in the figure;

[0021] Figure 3 It is a schematic diagram of the second clamping component of the fixture for UV printing according to an embodiment of the present utility model;

[0022] Figure 4 It is a cross-sectional view of the fixture for UV printing according to an embodiment of the present utility model;

[0023] Figure 5 It is a bottom view of the fixture for UV printing according to an embodiment of the present utility model;

[0024] Figure 6 It is one of the assembly schematic diagrams of the second clamping member and the fourth clamping member according to an embodiment of the present utility model;

[0025] Figure 7 It is another assembly schematic diagram of the second clamping member and the fourth clamping member according to an embodiment of the present utility model;

[0026] Figure 8 It is a top view of the fixture for UV printing according to an embodiment of the present utility model;

[0027] Figure 9 It is a simple schematic diagram of the workpiece to be printed;

[0028] Figure 10 It is a simple schematic diagram of the printed pattern;

[0029] In the figure: 1, workpiece to be printed; 2, printed pattern; 10, platform; 11, first guiding through hole; 12, second guiding through hole; 21, first clamping member; 22, third clamping member; 23, first moving plate; 31, second clamping member; 32, fourth clamping member; 33, second moving plate; 34, second rotating shaft; 35, second groove; 41, rotating member; 42, first gear; 43, second gear; 44, driving member; 51, first tension spring; 52, first pull rod; 61, second tension spring; 62, second pull rod; 70, first support plate; 71, first sliding groove; 72, first avoiding through hole; 80, second support plate; 81, second sliding groove; 82, second avoiding through hole. Detailed implementation manners

[0030] Now, example embodiments will be described more fully with reference to the accompanying drawings. However, the example embodiments can be implemented in various forms and should not be construed as limited to the embodiments set forth herein; rather, these embodiments are provided so that this utility model will be more complete and comprehensive, and the concept of the example embodiments will be fully conveyed to those skilled in the art. Like reference numerals in the figures denote the same or similar structures, and thus their repeated description will be omitted.

[0031] The words describing positions and directions in this utility model are all illustrated by way of the attached drawings. However, changes can be made as needed, and all such changes are included within the scope of protection of this utility model.

[0032] As Figure 1-8 shown, a fixture for UV printing provided by this utility model includes a platform 10, a first clamping assembly, a second clamping assembly, and a driving mechanism. The first clamping assembly includes two first clamping members 21 oppositely arranged in a first direction of the platform 10. The second clamping assembly includes two second clamping members 31 oppositely arranged in a second direction of the platform 10. The second direction is perpendicular to the first direction. The two first clamping members 21 and the two second clamping members 31 enclose a first clamping space. The driving mechanism is used to drive the first clamping assembly and the second clamping assembly to move synchronously towards each other or synchronously away from each other, so as to clamp or release the workpiece to be printed 1 by the two first clamping members 21 and the two second clamping members 31.

[0033] In this embodiment, first, the fixture is fixed on the printing platform 10, then the workpiece to be printed 1 is placed in the clamping area of the platform 10. After that, the driving mechanism drives the first clamping assembly and the second clamping assembly to move synchronously towards each other, so that the two first clamping members 21 and the two second clamping members 31 move synchronously along the first direction and the second direction respectively to clamp the workpiece to be printed 1, so as to achieve the effect of centering the clamping of the workpiece to be printed 1, thereby making the workpiece to be printed 1 coincide with the center point of the fixture. Since the position of the fixture on the printing platform 10 is fixed, when setting the printing pattern 2, it only needs to ensure that the center point of the pattern coincides with the center point of the fixture, so as to achieve the coincidence of the center point of the fixture, the center point of the workpiece to be printed 1, and the center point C of the printing pattern 2. Thus, a large amount of time does not need to be spent adjusting the placement position of the workpiece to be printed 1, the risk of incorrect printing position is reduced, and the printing efficiency and quality are improved.

[0034] The fixture of this utility model clamps the workpiece to be printed 1 in the center up, down, left, and right, can adapt to products of different sizes, and has a wider range of use; only one driving mechanism is required to realize the synchronous movement of the two first clamping members 21 and the two second clamping members 31, with low cost and good synchronism.

[0035] As a preferred embodiment, the first clamping assembly further includes third clamping members 22 detachably installed on the two first clamping members 21 respectively, and the two third clamping members 22 are oppositely arranged in the first direction;

[0036] The second clamping assembly further includes fourth clamping members 32 detachably installed on the two second clamping members 31 respectively, and the two fourth clamping members 32 are oppositely arranged in the second direction;

[0037] The two third clamping members 22 and the two fourth clamping members 32 enclose a second clamping space, and the second clamping space is smaller than the first clamping space.

[0038] In this embodiment, when the size of the workpiece 1 to be printed is small, the two third clamping members 22 are respectively installed on the first clamping member 21, and the two third clamping members 22 are arranged oppositely in the first direction. The two fourth clamping members 32 are respectively installed on the corresponding second clamping members 31, and the two fourth clamping members 32 are arranged oppositely in the second direction. In this way, the two third clamping members 22 and the two fourth clamping members 32 enclose a second clamping space to clamp items with a smaller size, so that the fixture can clamp workpieces to be clamped with different specifications and sizes, improving the applicability of the fixture.

[0039] As a preferred embodiment, the third clamping member 22 is rotatably connected to the first clamping member 21 through a first rotating shaft. A first pivot through hole for the first rotating shaft to pass through is provided at the corresponding positions of the first clamping member 21 and the third clamping member 22. The fourth clamping member 32 is rotatably connected to the second clamping member 31 through a second rotating shaft 34. A second pivot through hole for the second rotating shaft 34 to pass through is provided at the corresponding positions of the second clamping member 31 and the fourth clamping member 32.

[0040] In this embodiment, by providing a first pivot through hole in the first clamping member 21 and the third clamping member 22 and using a first rotating shaft to rotatably connect the third clamping member 22 and the first clamping member 21, the angle between the third clamping member 22 and the first clamping member 21 can be quickly adjusted to achieve the effect of quickly switching different clamping spaces. Similarly, by providing a second pivot through hole in the second clamping member 31 and the fourth clamping member 32 and using a second rotating shaft 34 to rotatably connect the fourth clamping member 32 and the second clamping member 31, the angle between the fourth clamping member 32 and the second clamping member 31 can be quickly adjusted to achieve the effect of quickly switching different clamping spaces.

[0041] As a preferred embodiment, the first clamping member 21 is provided with a first groove for restricting the rotation of the third clamping member 22. The first pivot through hole of the first clamping member 21 is located in the first groove. The second clamping member 31 is provided with a second groove 35 for restricting the rotation of the fourth clamping member 32. The second pivot through hole of the second clamping member 31 is located in the second groove 35.

[0042] In this embodiment, in order to prevent the third clamping member 22 and the fourth clamping member 32 from rotating during the clamping process, the rotation of the third clamping member 22 and the fourth clamping member 32 is restricted by the first groove and the second groove 35 respectively. Specifically, when the first clamping member 21 and the second clamping member 31 are used to clamp an object, the third clamping member 22 is rotated to a state parallel to the first clamping member 21, and the fourth clamping member 32 is rotated to a state parallel to the second clamping member 31 to avoid interference between the third clamping member 22 and the fourth clamping member 32 during clamping. When the third clamping member 22 and the fourth clamping member 32 are used to clamp an object, the third clamping member 22 is rotated to a state perpendicular to the first clamping member 21, and the rotating part of the third clamping member 22 is clamped in the first groove. The first groove restricts the rotation of the third clamping member 22 relative to the first clamping member 21, so that the object can be stably clamped and the clamping force can be increased. Similarly, referring to Figure 6 - Figure 7 , the fourth clamping member 32 is rotated to a state perpendicular to the second clamping member 31, and the rotating part of the fourth clamping member 32 is clamped in the second groove 35. The second groove 35 restricts the rotation of the fourth clamping member 32 relative to the second clamping member 31, so that the object can be stably clamped and the clamping force can be increased. In addition, in order to further improve the connection strength between the third clamping member 22 and the first clamping member 21, after the first rotating shaft passes through the first pivot through hole of the first clamping member 21, the end of the first rotating shaft is locked by a fastener. When the angle of the third clamping member 22 needs to be adjusted, the fastener is loosened first, and then the third clamping member 22 is adjusted. Similarly, a fastener is also provided at the end of the second rotating shaft 34.

[0043] As a preferred embodiment, the first clamping assembly further includes two first moving plates 23 arranged in parallel. The two first clamping members 21 are respectively connected to the corresponding first moving plates 23. The opposite sides of the two first moving plates 23 are provided with first racks extending in the first direction. The second clamping assembly further includes two second moving plates 33 arranged in parallel. The two second clamping members 31 are respectively connected to the corresponding second moving plates 33. The opposite sides of the two second moving plates 33 are both provided with second racks extending in the second direction. The driving mechanism includes a vertically arranged rotating member 41, a first gear 42 and a second gear 43 mounted on the rotating member 41 up and down, and a driving member 44 for driving the rotating member 41 to rotate. The first gear 42 is located between the two first moving plates 23 and meshes with the two first racks, and the second gear 43 is located between the two second moving plates 33 and meshes with the two second racks.

[0044] In this embodiment, the principle of the synchronous movement of the two first clamping components and the two second clamping components is as follows: The driving member 44 drives the rotating member 41 to rotate, and then drives the first gear 42 and the second gear 43 to rotate synchronously. Since the first gear 42 meshes with the two first racks and the second gear 43 meshes with the two second racks, the rotation of the first gear 42 and the second gear 43 respectively drives the two first racks and the two second racks to move back and forth synchronously, and then realizes the synchronous movement of the two first clamping members 21 and the two second clamping members 31. By adopting the meshing mode of the rack and the gear, and only one driving member 44 is needed to drive the four clamping members to move synchronously, the structure is compact and the production cost is low.

[0045] Of course, the synchronous movement mode of the two first clamping components and the two second clamping components can also be replaced by a ball screw. Using the same screw with opposite thread directions at both ends to drive the nuts at both ends to move synchronously can also achieve the above effect.

[0046] As a preferred embodiment, the first clamping component further includes a first buffer component respectively connected to the two first moving plates 23, and the second clamping component further includes a second buffer component respectively connected to the two second moving plates 33.

[0047] In this embodiment, by providing the first buffer component and the second buffer component, the first buffer component plays a buffering role for the first clamping member 21, and the second buffer component plays a buffering role for the second clamping member 31, ensuring the stability of the clamping force.

[0048] As a preferred embodiment, the first buffer component includes a first tension spring 51 extending in the first direction and a first pull rod 52 for connecting the first tension spring 51 to the first moving plate 23. The first pull rod 52 is vertically arranged. One end of the first tension spring 51 is fixed, and the other end is connected to the lower end of the first pull rod 52. The upper end of the first pull rod 52 is connected to the first moving plate 23. The second buffer component includes a second tension spring 61 extending in the second direction and a second pull rod 62 for connecting the second tension spring 61 to the second moving plate 33. The second pull rod 62 is vertically arranged. One end of the second tension spring 61 is fixed, and the other end is connected to the lower end of the second pull rod 62. The upper end of the second pull rod 62 is connected to the second moving plate 33.

[0049] In this embodiment, before clamping, the driving mechanism drives the first clamping component and the second clamping component to move in opposite directions, and the two first clamping members 21 and the second clamping members 31 move away from each other. At this time, the first tension spring 51 and the second tension spring 61 are stretched. When clamping, the driving mechanism drives the first clamping component and the second clamping component to move towards each other, and the two first clamping members 21 and the second clamping members 31 move closer to each other, and the first tension spring 51 and the second tension spring 61 are in a compressed state.

[0050] As a preferred embodiment, a first guiding through hole 11 extending in a first direction and a second guiding through hole 12 extending in a second direction are provided on the platform 10. The first clamping member 21 includes a first clamping portion and a first connecting portion connected to each other. The first connecting portion passes through the first guiding through hole 11 and is connected to the first moving plate 23. The second clamping member 31 includes a second clamping portion and a second connecting portion connected to each other. The second connecting portion passes through the second guiding through hole 12 and is connected to the second moving plate 33.

[0051] In this embodiment, by providing the first guiding through hole 11 and the second guiding through hole 12, the first clamping member 21 and the second clamping member 31 can smoothly slide on the platform 10. At the same time, the first guiding through hole 11 and the second guiding through hole 12 play a guiding role in the movement of the first clamping member 21 and the second clamping member 31.

[0052] As a preferred embodiment, it further includes a first supporting plate 70 and a second supporting plate 80 connected to the platform 10. The first supporting plate 70 is located below the platform 10. The second supporting plate 80 is located below the first supporting plate 70 and is perpendicular to the first supporting plate 70. The first supporting plate 70 and the second supporting plate 80 are respectively provided with a first through hole and a second through hole for the rotating member 41 to pass through. The first supporting plate 70 is provided with two first sliding grooves 71 extending in the first direction for the first moving plate 23 to slide. The second supporting plate 80 is provided with two second sliding grooves 81 extending in the second direction for the second moving plate 33 to slide.

[0053] In this embodiment, since the rotating member 41 is vertically arranged and the first gear 42 and the second gear 43 are arranged one above the other, the first supporting plate 70 and the second supporting plate 80 arranged one above the other respectively support the first moving plate 23 and the second moving plate 33, so as to support the first clamping assembly and the second clamping assembly, and at the same time achieve the characteristic of compact structure. The arrangement of the first sliding grooves 71 and the second sliding grooves 81 plays a guiding role in the movement of the first moving plate 23 and the second moving plate 33.

[0054] As a preferred embodiment, both the first tension spring 51 and the second tension spring 61 are located below the second supporting plate 80. The first supporting plate 70 is provided with a first avoiding through hole 72 for the first pull rod 52 to extend into the first sliding groove 71. The second supporting plate 80 is provided with a second avoiding through hole 82 for the second pull rod 62 to extend into the second sliding groove 81. The first avoiding through hole 72 extends in the first direction, and the second avoiding through hole 82 extends in the second direction.

[0055] In this embodiment, by providing the first avoidance through-hole 72 and the second avoidance through-hole 82, guiding effects are exerted on the movement of the first pull rod 52 and the second pull rod 62.

[0056] Combined Figure 8-10 , taking the printed part 1 as a power bank and a Bluetooth headset as examples, the working principle of the fixture of the present utility model is as follows:

[0057] Taking the power bank as an example, two first clamping members 21 perform synchronous movement along the first direction (such as Figure 7 the direction indicated by the arrow X), clamp the outer frame of the power bank, and center the power bank in the X direction; two second clamping members 31 perform synchronous movement along the second direction (such as Figure 7 the direction indicated by the arrow Y), clamp the outer frame of the power bank, and center the power bank in the Y direction, so that the center point B of the power bank coincides with the center point A of the fixture. Since the position of the fixture on the printing platform 10 is fixed, when setting the printing pattern 2, it only needs to ensure that the center point C of the pattern coincides with the center point A of the fixture, so as to achieve the coincidence of the center point A of the fixture, the center point B of the power bank, and the center point C of the printing pattern 2.

[0058] Taking the printing of the Bluetooth headset as an example, the third clamping member 22 and the fourth clamping member 32 are respectively rotated so that the third clamping member 22 is perpendicular to the first clamping member 21, and the fourth clamping member 32 is perpendicular to the second clamping member 31. Two third clamping members 22 perform synchronous movement along the first direction, and the two third clamping members 22 clamp the outer frame of the headset to center the headset in the X direction; two fourth clamping members 32 perform synchronous movement along the second direction, and the two fourth clamping members 32 clamp the outer frame of the headset to center the headset in the Y direction; thus, the center point B of the headset coincides with the center point A of the fixture. Since the position of the fixture on the printing platform 10 is fixed, when setting the printing pattern 2, it only needs to ensure that the center point C of the pattern coincides with the center point A of the fixture, so as to achieve the coincidence of the center point A of the fixture, the center point B of the headset, and the center point C of the printing pattern 2. Although the embodiments of the present utility model have been shown and described above, it can be understood that the above embodiments are exemplary and should not be construed as limiting the present utility model. Without departing from the principle and purpose of the present utility model, those of ordinary skill in the art can make changes, modifications, substitutions, and variations to the above embodiments within the scope of the utility model, and all these changes should fall within the protection scope of the claims of the present utility model.

Claims

1. A UV printing fixture, characterized in that: The invention comprises a platform (10), a first clamping assembly, a second clamping assembly and a driving mechanism, wherein the first clamping assembly comprises two first clamping members (21) arranged opposite to each other in a first direction of the platform (10), the second clamping assembly comprises two second clamping members (31) arranged opposite to each other in a second direction of the platform (10), the second direction is perpendicular to the first direction, the two first clamping members (21) and the two second clamping members (31) enclose a first clamping space, and the driving mechanism is used to drive the first clamping assembly and the second clamping assembly to move synchronously toward each other or synchronously away from each other, so as to clamp or release a printed workpiece (1) through the two first clamping members (21) and the two second clamping members (31).

2. The UV printing fixture according to claim 1, characterized in that: The first clamping assembly further comprises a third clamping member (22) which is detachably mounted on the two first clamping members (21), and the two third clamping members (22) are arranged opposite to each other in the first direction; The second clamping assembly further comprises a fourth clamping member (32) detachably mounted on the two second clamping members (31), and the two fourth clamping members (32) are arranged opposite to each other in the second direction; The two third clamping members (22) and the two fourth clamping members (32) enclose a second clamping space, and the second clamping space is smaller than the first clamping space.

3. The UV printing fixture according to claim 2, characterized in that: The third clamping member (22) is rotatably connected to the first clamping member (21) via a first rotating shaft, and a first pivot hole for the first rotating shaft to pass through is provided at corresponding positions of the first clamping member (21) and the third clamping member (22), and the fourth clamping member (32) is rotatably connected to the second clamping member (31) via a second rotating shaft (34), and a second pivot hole for the second rotating shaft (34) to pass through is provided at corresponding positions of the second clamping member (31) and the fourth clamping member (32).

4. The UV printing fixture according to claim 3, characterized in that: The first clamping member (21) is provided with a first groove for limiting the rotation of the third clamping member (22), and the first pivot hole of the first clamping member (21) is located in the first groove. The second clamping member (31) is provided with a second groove (35) for limiting the rotation of the fourth clamping member (32), and the second pivot hole of the second clamping member (31) is located in the second groove (35).

5. The UV printing fixture according to claim 1, characterized in that: The first clamping assembly further comprises two first movable plates (23) arranged in parallel, the two first clamping members (21) are respectively connected to the corresponding first movable plates (23), and the opposite sides of the two first movable plates (23) are provided with first racks extending along the first direction; the second clamping assembly further comprises two second movable plates (33) arranged in parallel, the two second clamping members (31) are respectively connected to the corresponding second movable plates (33), and the opposite sides of the two second movable plates (33) are provided with second racks extending along the second direction; the driving mechanism comprises a vertically arranged rotating member (41), a first gear (42) and a second gear (43) installed on the rotating member (41) in an up-and-down manner, and a driving member (44) driving the rotating member (41) to rotate, the first gear (42) being located between the two first movable plates (23) and meshing with the two first racks, the second gear (43) being located between the two second movable plates (33) and meshing with the two second racks.

6. The UV printing fixture according to claim 5, characterized in that: The first clamping assembly further comprises first buffer assemblies respectively connected to the two first movable plates (23), and the second clamping assembly further comprises second buffer assemblies respectively connected to the two second movable plates (33).

7. The UV printing fixture according to claim 6, characterized in that: The first buffer assembly includes a first tension spring (51) extending in a first direction and a first pull rod (52) for connecting the first tension spring (51) to the first movable plate (23), wherein the first pull rod (52) is vertically arranged, one end of the first tension spring (51) is fixed, and the other end is connected to the lower end of the first pull rod (52), and the upper end of the first pull rod (52) is connected to the first movable plate (23); the second buffer assembly includes a second tension spring (61) extending in a second direction and a second pull rod (62) for connecting the second tension spring (61) to the second movable plate (33), wherein the second pull rod (62) is vertically arranged, one end of the second tension spring (61) is fixed, and the other end is connected to the lower end of the second pull rod (62), and the upper end of the second pull rod (62) is connected to the second movable plate (33).

8. The UV printing fixture according to claim 5, characterized in that: The platform (10) is provided with a first guide through hole (11) extending in a first direction and a second guide through hole (12) extending in a second direction; the first clamping member (21) comprises a first clamping portion and a first connecting portion connected to each other; the first connecting portion is connected to the first movable plate (23) after passing through the first guide through hole (11); the second clamping member (31) comprises a second clamping portion and a second connecting portion connected to each other; the second connecting portion is connected to the second movable plate (33) after passing through the second guide through hole (12).

9. The UV printing fixture according to claim 7, characterized in that: The invention also comprises a first support plate (70) and a second support plate (80) connected to the platform (10), wherein the first support plate (70) is located below the platform (10), and the second support plate (80) is located below the first support plate (70) and is arranged vertically with the first support plate (70), and the first support plate (70) and the second support plate (80) are respectively provided with a first through hole and a second through hole for the rotating member (41) to pass through, and the first support plate (70) is provided with two first sliding grooves (71) extending along the first direction for the first movable plate (23) to slide, and the second support plate (80) is provided with two second sliding grooves (81) extending along the second direction for the second movable plate (33) to slide.

10. The UV printing fixture according to claim 9, characterized in that: The first tension spring (51) and the second tension spring (61) are both located below the second support plate (80); the first support plate (70) is provided with a first avoidance hole (72) for the first pull rod (52) to extend into the first slide groove (71); the second support plate (80) is provided with a second avoidance hole (82) for the second pull rod (62) to extend into the second slide groove (81); the first avoidance hole (72) is extended along a first direction, and the second avoidance hole (82) is extended along a second direction.

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