A fixture for testing plastic products

Abstract

The utility model discloses a clamp for testing plastic products, comprising a support column, a clamping jaw mounting seat, a clamping jaw assembly and an elastic clamping mechanism. After the first clamping plate and the second clamping plate of the clamping jaw assembly move toward each other and clamp the plastic product, the spring of the elastic clamping mechanism is compressed and generates an elastic force on the third clamping plate of the elastic clamping mechanism, and the direction of the elastic force is the same as the direction of the force of the first clamping plate on the plastic product, that is, the plastic product is on one side of the first clamping plate and is simultaneously subjected to the clamping force of the first clamping plate and the elastic force of the third clamping plate. When the clamping force between the first clamping plate and the second clamping plate is insufficient to clamp the plastic product during the movement of the plastic product, the third clamping plate increases the clamping force on the plastic product under the action of the elastic force, thereby improving the stability of the clamp in clamping the plastic product. In addition, the third clamping plate is a plastic clamping plate, which avoids indentations on the surface of the plastic product when clamping the plastic product.

Description

Technical Field

[0001] The utility model relates to the technical field related to auxiliary equipment for detecting plastic products, and in particular to a clamp for detecting plastic products. Background Art

[0002] Plastics are widely used and are indispensable components in home appliances, automobiles, mobile phones, PCs, medical devices, and lighting appliances. As my country's economy has achieved sustained and stable growth, industries such as home appliances, automobiles, mobile phones, PCs, and medical devices have also achieved rapid development thanks to a good external environment. The development of downstream industries has further driven the demand for plastics. In the production process of plastics, in order to ensure the quality of the products, it is an indispensable task to test the products. When doing this, it is necessary to use corresponding fixtures to fix the products to be tested. In the existing fixtures for testing plastic products, the product to be tested is usually placed between the jaws, and the product to be tested is clamped by adjusting the distance between the jaws. However, if the clamping force of the jaws is too large, it will cause indentations on the surface of the plastic product, and even cause excessive stress on the structure of the plastic product, causing the plastic product to crack or break. For this reason, when the distance between the jaws is adjusted to clamp the product to be tested, and the jaws are able to clamp the plastic product, the clamping force of the jaws on the plastic product will not be increased. However, this may result in a risk of the plastic product falling off due to insufficient clamping force of the clamp on the plastic product when the clamp drives the plastic product to move.

[0003] In view of this, there is a need to improve the existing plastic product inspection fixture to solve the problem of the risk of plastic products falling due to insufficient clamping force of the clamp on the plastic products when the existing clamp drives the plastic products to move. Utility Model Content

[0004] The utility model aims to provide a clamp for testing plastic products, which solves the technical problem that in the process of the existing clamping jaws driving the plastic products to move, the plastic products may fall due to the insufficient clamping force of the clamping jaws on the plastic products.

[0005] To achieve this purpose, the utility model adopts the following technical solutions:

[0006] A fixture for testing plastic products, comprising:

[0007] Support columns;

[0008] A clamping jaw mounting seat, arranged on the support column;

[0009] A clamping jaw assembly is arranged on the clamping jaw mounting seat, the clamping jaw assembly comprises a first clamping plate and a second clamping plate which are parallel to each other, and the first clamping plate and the second clamping plate can move towards each other or move away from each other;

[0010] An elastic clamping mechanism runs through the first clamping plate, and the elastic clamping mechanism includes a third clamping plate arranged on the inner side of the first clamping plate. A spring is arranged on one side of the third clamping plate, and the spring portion is sleeved in a spring tube. The spring tube is snap-connected to the first clamping plate. The third clamping plate is parallel to the first clamping plate, and the third clamping plate is a plastic clamping plate.

[0011] Optionally, a clamping plate groove corresponding to the third clamping plate is provided on the first clamping plate, and a limiting hole penetrating through the first clamping plate is provided on the clamping plate groove.

[0012] Optionally, the elastic clamping mechanism further includes a limiting column, one end of which is connected to one side of the third clamping plate, and the other end of which is connected to the spring, and the limiting column is partially sleeved in the limiting hole.

[0013] Optionally, a slide groove is provided in the limiting hole along the length direction, and a first slider corresponding to the slide groove is provided on the outer wall of the spring tube. The first slider can slide on the slide groove, and clamping grooves are provided at both ends of the slide groove. The first slider can be clamped into the clamping groove by rotating the spring tube.

[0014] Optionally, a mounting groove is provided on the clamping jaw mounting seat, the cross-section of the mounting groove is cross-shaped, an accommodating cavity is provided at one end of the mounting groove, the mounting groove is communicated with the accommodating cavity, and a driving mechanism is provided on the mounting groove and the accommodating cavity to drive the movement of the first clamping plate and the second clamping plate.

[0015] Optionally, the driving mechanism includes a driving gear arranged in the accommodating cavity and a driven gear arranged on both sides of the driving gear, the driven gear is meshingly connected with the driving gear, the driven gear is provided with a bidirectional threaded rod extending into the mounting groove, the bidirectional threaded rod is symmetrically provided with a second slider corresponding to the mounting groove, and the second slider is provided with an internal threaded hole corresponding to the bidirectional threaded rod.

[0016] Optionally, a rotating shaft extending outside the clamping jaw mounting seat is provided on one side of the driving gear, and a knob is provided on one end of the rotating shaft extending outside the clamping jaw mounting seat.

[0017] Optionally, the support column is a retractable column, and mounting plates are fixedly provided at both ends of the support column, and a driving cylinder is provided on the mounting plate.

[0018] Optionally, a driving motor is provided on the support column, and the clamp mounting seat is connected to the support column via the driving motor.

[0019] Optionally, a mounting hole is provided on the bottom surface of the support column.

[0020] Compared with the prior art, the utility model has the following beneficial effects: when clamping a plastic product, after the first clamping plate and the second clamping plate of the clamping jaw assembly move toward each other and clamp the plastic product, the distance between the first clamping plate and the second clamping plate remains unchanged, that is, the clamping force between the first clamping plate and the second clamping plate on the plastic product remains unchanged. At this time, the spring tube is clamped into the first clamping plate, the spring is compressed, and an elastic force is generated on the third clamping plate, and the direction of the elastic force is the same as the direction of the force of the first clamping plate on the plastic product, that is, the plastic product is on one side of the first clamping plate, and is simultaneously subjected to the clamping force of the first clamping plate and the elastic force of the third clamping plate. When the clamping force between the first clamping plate and the second clamping plate is insufficient to clamp the plastic product during the movement of the plastic product, the third clamping plate increases the clamping force on the plastic product under the action of the elastic force, thereby improving the stability of the clamp clamping the plastic product. In addition, the third clamping plate is a plastic clamping plate, which avoids the formation of indentations on the surface of the plastic product when clamping the plastic product. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] In order to more clearly illustrate the embodiments of the utility model or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the utility model. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative labor.

[0022] The structures, proportions, sizes, etc. illustrated in the drawings of this specification are only used to match the contents disclosed in the specification so as to facilitate understanding and reading by persons familiar with this technology. They are not used to limit the conditions under which the present invention can be implemented, and therefore have no substantive technical significance. Any structural modification, change in proportion or adjustment of size, without affecting the effects and purposes that can be achieved by the present invention, should still fall within the scope of the technical contents disclosed by the present invention.

[0023] Figure 1 This is a schematic diagram of the structure of the plastic product testing fixture of the utility model;

[0024] Figure 2 It is a structural schematic diagram of the elastic clamping mechanism of the utility model;

[0025] Figure 3 This is a schematic diagram of the three-dimensional structure of the first clamping plate of the utility model;

[0026] Figure 4 This is a schematic diagram of the internal structure of the first splint of the utility model;

[0027] Figure 5 It is a structural schematic diagram of the driving mechanism and the clamping jaw assembly of the utility model;

[0028] Figure 6 It is a structural schematic diagram of the clamping jaw mounting seat of the utility model;

[0029] Figure 7 for Figure 6 AA section view;

[0030] Figure 8 for Figure 6 BB cross-section diagram.

[0031] Illustrations: 10. Support column; 11. Mounting hole; 12. Mounting plate; 20. Clamp mounting seat; 21. Mounting slot; 22. Accommodating chamber; 23. Sleeve; 30. Clamp assembly; 31. First clamping plate; 32. Second clamping plate; 33. Clamping plate slot; 34. Limiting hole; 35. Slide slot; 36. Card slot; 40. Elastic clamping mechanism; 41. Third clamping plate; 42. Spring; 43. Spring cylinder; 44. Limiting column; 45. First slider; 50. Driving mechanism; 51. Driving gear; 52. Driven gear; 53. Bidirectional threaded rod; 54. Second slider; 55. Rotating shaft; 56. Knob; 61. Driving cylinder; 62. Driving motor. DETAILED DESCRIPTION

[0032] In order to make the purpose, features and advantages of the invention of the utility model more obvious and easy to understand, the technical scheme in the embodiment of the utility model will be clearly and completely described below in combination with the drawings in the embodiment of the utility model. Obviously, the embodiment described below is only a part of the embodiment of the utility model, not all of the embodiments. Based on the embodiment of the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0033] In the description of the present invention, it should be understood that the terms "upper", "lower", "top", "bottom", "inside", "outside", etc., indicating the orientation or positional relationship, are based on the orientation or positional relationship shown in the drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present invention. It should be noted that when a component is considered to be "connected" to another component, it may be directly connected to the other component or there may be a centrally arranged component at the same time.

[0034] The technical solution of the utility model is further explained below with reference to the accompanying drawings and through specific implementation methods.

[0035] Reference Figures 1 to 8The embodiment of the utility model provides a clamp for testing plastic products, including a support column 10, a clamp mounting seat 20, a clamp assembly 30 and an elastic clamping mechanism 40. A mounting hole 11 is provided on the bottom surface of the support column 10 for installation on an external device. One end of the clamp mounting seat 20 is disposed on the support column 10. The clamp assembly 30 is disposed on the clamp mounting seat 20, and the clamp assembly 30 includes a first clamp plate 31 and a second clamp plate 32 which are parallel to each other, and the first clamp plate 31 and the second clamp plate 32 can move toward each other or move away from each other. Optionally, the first clamp plate 31 and the second clamp plate 32 are both in a 7-shape.

[0036] Reference Figure 1 The support column 10 is a retractable column, and mounting plates 12 are fixedly provided at both ends of the support column 10. A driving cylinder 61 is provided on the mounting plate 12 to drive the lifting of the clamping jaw mounting seat 20. A driving motor 62 is provided on the support column 10, and the clamping jaw mounting seat 20 is connected to the support column 10 through the driving motor 62 to drive the lifting of the clamping jaw mounting seat 20. Specifically, a sleeve 23 is provided at one end of the clamping jaw mounting seat 20, and the sleeve 23 is sleeved on the output shaft of the driving motor 62.

[0037] Reference Figures 2 to 4 The elastic clamping mechanism 40 includes a third clamping plate 41, a limiting column 44, a spring 42 and a spring tube 43. The third clamping plate 41 is parallel to the first clamping plate 31, and the third clamping plate 41 is a plastic clamping plate. The first clamping plate 31 is provided with a clamping plate groove 33 corresponding to the third clamping plate 41, and the depth of the clamping plate groove 33 is the same as the thickness of the third clamping plate 41. The clamping plate groove 33 is provided with a limiting hole 34 that penetrates the first clamping plate 31, and the elastic clamping mechanism 40 penetrates the first clamping plate 31 through the limiting hole 34.

[0038] The third clamping plate 41 is arranged on the inner side of the first clamping plate 31, that is, the clamping plate groove 33 is arranged on the inner side of the first clamping plate 31. The limiting column 44 is arranged on the side of the third clamping plate 41 away from the second clamping plate 32, and the limiting column 44 is partially sleeved in the limiting hole 34. One end of the spring 42 is connected to the limiting column 44, and the other end is connected to the spring barrel 43, so that the elastic force direction of the spring 42 is the same as the moving direction of the first clamping plate 31. The spring 42 is partially sleeved in the spring barrel 43, and the spring barrel 43 is snap-fitted to the first clamping plate 31.

[0039] The limiting hole 34 is provided with a slide groove 35 along the length direction, and the outer wall of the spring barrel 43 is provided with a first slider 45 corresponding to the slide groove 35, and the first slider 45 can slide on the slide groove 35. Optionally, the number of the slide grooves 35 is two, which are symmetrically arranged on both sides of the limiting hole 34; correspondingly, the number of the first sliders 45 is also two. The two ends of the slide groove 35 are provided with a clamping groove 36, and the clamping groove 36 is connected to the slide groove 35. Specifically, when the spring barrel 43 slides in the limiting hole 34 through the first slider 45, and the first slider 45 slides to one side of the clamping groove 36, the first slider 45 can be clamped into the clamping groove 36 by rotating the spring barrel 43, that is, the snap-fit ​​connection between the spring barrel 43 and the first clamping plate 31 is completed.

[0040] It should be noted that both ends of the slide groove 35 are provided with a slot 36. When the clamp clamps the plastic product, the first slider 45 is clamped into the slot 36 near one end of the clamping plate slot 33 to further compress the spring 42 and increase the force of the spring 42 on the third clamping plate 41; when the clamp does not clamp the plastic product, the spring 42 is in a naturally extended state, and the first slider 45 is clamped into the slot 36 far from one end of the clamping plate slot 33, at this time, the distance for the third clamping plate 41 to pop out of the clamping plate slot 33 can be reduced.

[0041] It should be further explained that the elastic clamping mechanism 40 can be disposed on the first clamping plate 31 or on the second clamping plate 32 . In this embodiment, the elastic clamping mechanism 40 is not disposed on the first clamping plate 31 .

[0042] Reference Figures 5 to 8 The clamping jaw mounting seat 20 is provided with a mounting groove 21, the cross section of the mounting groove 21 is cross-shaped, and one end of the mounting groove 21 is provided with a receiving cavity 22. Specifically, the receiving cavity 22 is provided in one end of the clamping jaw mounting seat 20 away from the support column 10, and the receiving cavity 22 is communicated with the mounting groove 21. The mounting groove 21 and the receiving cavity 22 are provided with a driving mechanism 50 to drive the movement of the first clamping plate 31 and the second clamping plate 32.

[0043] The driving mechanism 50 includes a driving gear 51 disposed in the accommodating cavity 22 and driven gears 52 disposed on both sides of the driving gear 51, and the driven gears 52 are meshed and connected with the driving gear 51. When the driving gear 51 is rotated, the driving gear 51 drives the driven gear 52 to rotate synchronously.

[0044] The driven gear 52 is provided with a bidirectional threaded rod 53 extending into the installation slot 21, and the bidirectional threaded rod 53 is symmetrically provided with a second slider 54 corresponding to the installation slot 21, and the second slider 54 is provided with an internal threaded hole corresponding to the bidirectional threaded rod 53. The synchronous rotation of the bidirectional threaded rod 53 drives the second slider 54 to move toward or away from each other. It should be noted that, compared with the method of using a single bidirectional threaded rod 53 to drive the second slider 54, the present embodiment uses two bidirectional threaded rods 53 to drive the second slider 54, which has higher stability.

[0045] A rotating shaft 55 extending to the outside of the clamping jaw mounting seat 20 is disposed on one side of the driving gear 51, and a knob 56 is disposed on one end of the rotating shaft 55 extending to the outside of the clamping jaw mounting seat 20. The operator can rotate the knob 56 to rotate the driving gear 51.

[0046] The utility model discloses a clamp for testing plastic products, and the specific implementation method is as follows: when clamping a plastic product, after the first clamping plate 31 and the second clamping plate 32 of the clamping jaw assembly 30 move toward each other and clamp the plastic product, the distance between the first clamping plate 31 and the second clamping plate 32 remains unchanged, that is, the clamping force between the first clamping plate 31 and the second clamping plate 32 on the plastic product remains unchanged. At this time, the spring cylinder 43 is clamped on the first clamping plate 31, the spring 42 is compressed, and an elastic force is generated on the third clamping plate 41, and the direction of the elastic force is the same as the direction of the force of the first clamping plate 31 on the plastic product, that is, the plastic product is on one side of the first clamping plate 31, and is subjected to the clamping force of the first clamping plate 31 and the elastic force of the third clamping plate 41 at the same time. When the clamping force between the first clamping plate 31 and the second clamping plate 32 is insufficient to clamp the plastic product during the movement of the plastic product, the third clamping plate 41 increases the clamping force on the plastic product under the action of the elastic force, thereby improving the stability of the clamp clamping the plastic product. In addition, the third clamping plate 41 is a plastic clamping plate, which avoids indentations on the surface of the plastic product when clamping the plastic product.

[0047] As described above, the above embodiments are only used to illustrate the technical solutions of the utility model, rather than to limit it. Although the utility model has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that the technical solutions described in the aforementioned embodiments can still be modified, or some of the technical features can be replaced by equivalents. However, these modifications or replacements do not deviate the essence of the corresponding technical solutions from the spirit and scope of the technical solutions of the various embodiments of the utility model.

Claims

1. A fixture for testing plastic products, characterized in that: include: Support column (10); A clamping jaw mounting seat (20) is arranged on the support column (10); A clamping jaw assembly (30) is arranged on the clamping jaw mounting seat (20), the clamping jaw assembly (30) comprising a first clamping plate (31) and a second clamping plate (32) which are parallel to each other, the first clamping plate (31) and the second clamping plate (32) being able to move towards each other or move away from each other; An elastic clamping mechanism (40) runs through the first clamping plate (31), the elastic clamping mechanism (40) comprises a third clamping plate (41) arranged on the inner side of the first clamping plate (31), a spring (42) is arranged on one side of the third clamping plate (41), the spring (42) is partially sleeved in a spring tube (43), the spring tube (43) is snap-connected to the first clamping plate (31), the third clamping plate (41) is parallel to the first clamping plate (31), and the third clamping plate (41) is a plastic clamping plate.

2. The plastic product inspection fixture according to claim 1, characterized in that: The first clamping plate (31) is provided with a clamping plate groove (33) corresponding to the third clamping plate (41), and the clamping plate groove (33) is provided with a limiting hole (34) penetrating the first clamping plate (31).

3. The plastic product inspection fixture according to claim 2, characterized in that: The elastic clamping mechanism (40) further comprises a limiting column (44), one end of the limiting column (44) is connected to one side of the third clamping plate (41), and the other end is connected to the spring (42), and the limiting column (44) is partially sleeved in the limiting hole (34).

4. The plastic product inspection fixture according to claim 2, characterized in that: A sliding groove (35) is provided in the limiting hole (34) along the length direction, and a first sliding block (45) corresponding to the sliding groove (35) is provided on the outer wall of the spring tube (43). The first sliding block (45) can slide on the sliding groove (35), and clamping grooves (36) are provided at both ends of the sliding groove (35). By rotating the spring tube (43), the first sliding block (45) can be clamped into the clamping groove (36).

5. The plastic product inspection fixture according to claim 1, characterized in that: The clamping jaw mounting seat (20) is provided with a mounting groove (21), the cross section of the mounting groove (21) is cross-shaped, one end of the mounting groove (21) is provided with a receiving cavity (22), the mounting groove (21) is communicated with the receiving cavity (22), and a driving mechanism (50) is provided on the mounting groove (21) and the receiving cavity (22) to drive the movement of the first clamping plate (31) and the second clamping plate (32).

6. The plastic product inspection fixture according to claim 5, characterized in that: The driving mechanism (50) comprises a driving gear (51) arranged in the accommodating cavity (22) and driven gears (52) arranged on both sides of the driving gear (51), the driven gear (52) being meshingly connected with the driving gear (51), the driven gear (52) being provided with a bidirectional threaded rod (53) extending into the mounting groove (21), the bidirectional threaded rod (53) being symmetrically provided with a second sliding block (54) corresponding to the mounting groove (21), the second sliding block (54) being provided with an internal threaded hole corresponding to the bidirectional threaded rod (53).

7. The plastic product inspection fixture according to claim 6, characterized in that: A rotating shaft (55) extending outside the clamping jaw mounting seat (20) is provided on one side of the driving gear (51), and a knob (56) is provided on one end of the rotating shaft (55) extending outside the clamping jaw mounting seat (20).

8. The plastic product inspection fixture according to claim 1, characterized in that: The support column (10) is a retractable column, and mounting plates (12) are fixedly provided at both ends of the support column (10), and a driving cylinder (61) is provided on the mounting plate (12).

9. The plastic product inspection fixture according to claim 1, characterized in that: The support column (10) is provided with a driving motor (62), and the clamping jaw mounting seat (20) is connected to the support column (10) via the driving motor (62).

10. The plastic product inspection fixture according to claim 1, characterized in that: A mounting hole (11) is provided on the bottom surface of the support column (10).

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