Plastic hardness detection clamp
By designing plastic hardness detection fixtures for round tables, bidirectional screws and plywood structures, the problems of plastics prone to breaking and splashing in the prior art are solved, and safe and reliable plastic hardness detection is achieved.
Patent Information
- Application Number
- CN202420620489.1
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-03-28
- Publication Date
- 2024-12-17
- Estimated Expiration
- 2034-03-28
AI Technical Summary
Among the existing plastic hardness detection methods, a hardness meter with a pointed structure can easily lead to poor toughness of plastic breakage, and the clamping method on both sides or both ends makes the plastic easily splashed during inspection, affecting the safety of experimental instruments and detectors.
A plastic hardness detection fixture was designed, using a circular table, a bidirectional screw, a movable seat, a ply plate and an inner extension plate. The plastic is double-sidedly limited by a bidirectional screw drive ply plate, and the inner pushing screw and adjusting wire are used. The pole provides multi-point support to avoid plastic splashing.
It effectively avoids the breakage and splash of plastic during inspection, ensures the safety and accuracy of inspection, and protects the detector and the detection instrument.
Smart Images
Figure CN222188983U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the technical field of plastic detection, in particular to a plastic hardness detection fixture. Background Art
[0002] After the plastic is prepared, in order to clearly know its various performance parameters, it needs to be tested, such as its hardness, tensile strength, etc. When testing hardness, since the hardness tester currently used is a pressure point test hardness, the contact part of the hardness tester is usually set to a pointed structure, and this structure is prone to plastic breakage when testing the hardness of plastics with poor toughness. In addition, the existing clamping method adopts the clamping method on both sides or both ends. Once the plastic is broken, it will splash everywhere, which is easy to affect the experimental equipment and even the tester. Utility Model Content
[0003] The utility model provides a plastic hardness testing fixture to solve the deficiencies of the prior art. During hardness testing, plastic splashing can be avoided through stable limiting, and the utility model has strong practicality.
[0004] In order to achieve the purpose of this utility model, the following technologies are proposed:
[0005] A plastic hardness testing fixture includes a mounting ring, a truncated cone is provided on the mounting ring, a circular groove is formed at the lower end of the truncated cone, two pairs of guide holes are formed on the truncated cone, a rotating seat is installed on the bottom of the circular groove, a bidirectional screw is rotatably provided on the rotating seat, the threads at both ends of the bidirectional screw are in opposite directions, the two ends of the bidirectional screw extend out of the truncated cone, a rotating cap is provided at one end of the bidirectional screw, and movable seats are respectively provided at both ends of the bidirectional screw, and a pair of guide rods are provided on the movable seat, the guide rods are passed through the guide holes, and a movable plate is provided at the upper end of each pair of guide rods, and a clamp is provided on the movable plate. The two sides of the plastic can be limited by the provided clamp, and when clamping, it is driven by a single bidirectional screw. A pad is movably provided on the truncated cone, and convex plates are respectively provided at both ends of the pad, and an inner push screw is screwed on the convex plate, and a rotating handle is provided at the outer end of the inner push screw, and an end clamp is provided at the inner end of the inner push screw. The pad provides a hard support platform for hardness testing, and the two ends of the plastic can be clamped by the provided end clamps, and the splashing of the plastic during testing can be avoided by limiting the two sides and the two ends.
[0006] Furthermore, an inwardly extending plate is provided at the upper end of the clamping plate to prevent the plastic from flying out from the upper end.
[0007] Furthermore, a U-shaped groove is provided at the inner end of the inner extension plate, so that the pressure rod of the hardness tester can pass through the groove to perform hardness testing.
[0008] Furthermore, a rotating seat is provided on the circumference of the truncated table, an adjusting screw is rotatably provided on the rotating seat, a rotating cap is provided on the outer end of the adjusting screw, a screw plate is provided on the adjusting screw, an L-shaped plate is installed on the screw plate, and the L-shaped plate is installed on one end of the pad. The adjusting screw is provided to facilitate the movement of the pad and the plastic plate thereon, thereby facilitating the collection of multi-point hardness data on the plastic.
[0009] The advantages of the above technical solution are:
[0010] The utility model can prevent the plastic from being crushed due to extrusion and affecting the tester and the test instrument when testing the hardness of the plastic. BRIEF DESCRIPTION OF THE DRAWINGS
[0011] In order to make the purpose, technical solutions and advantages of the utility model clearer, the utility model will be further described in detail below with reference to the accompanying drawings.
[0012] Figure 1 The three-dimensional structure of one embodiment is shown Figure 1 .
[0013] Figure 2 The three-dimensional structure of one embodiment is shown Figure 2 . DETAILED DESCRIPTION
[0014] like Figure 1~Figure 2 As shown, a plastic hardness testing fixture includes a mounting ring 1, a truncated cone 10 is provided on the mounting ring 1, a circular groove is formed at the lower end of the truncated cone 10, two pairs of guide holes 11 are formed on the truncated cone 10, a rotating seat 2 is installed on the bottom of the circular groove, a bidirectional screw rod 200 is rotatably provided on the rotating seat 2, the threads at both ends of the bidirectional screw rod 200 are in opposite directions, both ends of the bidirectional screw rod 200 extend out of the truncated cone 10, a rotating cap 22 is provided at one end of the bidirectional screw rod 200, and movable seats 20 are respectively provided at both ends of the bidirectional screw rod 200, a pair of guide rods 21 are provided on the movable seat 20, the guide rods 21 are passed through the guide holes 11, and a movable plate 23 is provided at the upper end of each pair of guide rods 21, and a clamp is provided on the movable plate 23. An inner extension plate 24 is provided at the upper end of the clamp. A U-shaped groove 25 is provided at the inner side end of the inner extension plate 24. A backing plate 33 is movably provided on the round table 10, and convex plates 34 are respectively provided at both ends of the backing plate 33, and an inner push screw 35 is screwed on the convex plate 34, and a rotating handle 36 is provided at the outer end of the inner push screw 35, and an end clamping plate 37 is provided at the inner end of the inner push screw 35. A rotating seat is provided on the circumferential side of the round table 10, and an adjusting screw 3 is rotatably provided on the rotating seat, and a rotating cap 30 is provided at the outer end of the adjusting screw 3. A screw plate 31 is provided on the adjusting screw 3, and an L-shaped plate 32 is installed on the screw plate 31, and the L-shaped plate 32 is installed on one end of the backing plate 33.
[0015] When testing the hardness of plastic in this embodiment, the plastic is first processed into a long sheet structure. Then the plastic sheet is placed on the pad 33, and then the end clamping plate 37 is moved inward by rotating the inner push screw 35, and finally the two ends of the plastic sheet are clamped by the end clamping plate 37, and then the clamping plates are brought closer to each other by rotating the bidirectional screw 200, so that the two sides of the plastic sheet are constrained by the clamping plates. At the same time, after the constraint, the inner extension plate 24 is docked together, and then the tester starts the hardness tester so that its pressure rod passes through the U-shaped groove 25 and the hardness at the point is tested. After the test, the clamping plate can be loosened first, and then the plastic sheet can be moved forward a distance by rotating the adjustment screw 3, and then the test is carried out, so that the hardness parameters can be sampled at different positions of the plastic sheet. After completion, the plastic sheet is removed. Of course, if there is a problem of plastic sheet splashing during the test, it can be blocked by the presence of the clamping plate and the inner extension plate.
[0016] The above description is only a preferred embodiment of the utility model and is not intended to limit the utility model. Obviously, those skilled in the art can make various changes and modifications to the utility model without departing from the spirit and scope of the utility model. Thus, if these modifications and variations of the utility model fall within the scope of the claims of the utility model and their equivalents, the utility model is also intended to include these modifications and variations.
Claims
1. A plastic hardness testing fixture, It is characterized in that The invention comprises a mounting ring (1), a truncated cone (10) is provided on the mounting ring (1), a circular groove is formed at the lower end of the truncated cone (10), two pairs of guide holes (11) are formed on the truncated cone (10), a rotating seat (2) is installed on the bottom of the circular groove, a bidirectional screw rod (200) is rotatably provided on the rotating seat (2), the threads at both ends of the bidirectional screw rod (200) are in opposite directions, both ends of the bidirectional screw rod (200) extend out of the truncated cone (10), a rotating cap (22) is provided at one end of the bidirectional screw rod (200), movable seats (20) are respectively provided at both ends of the bidirectional screw rod (200), a pair of guide rods (21) are provided on the movable seat (20), the guide rods (21) are inserted into the guide holes (11), a movable plate (23) is provided at the upper end of each pair of guide rods (21), and a clamping plate is provided on the movable plate (23); A backing plate (33) is movably provided on the round table (10), and convex plates (34) are respectively provided at both ends of the backing plate (33). An inner push screw (35) is screwed onto the convex plate (34), a rotating handle (36) is provided at the outer end of the inner push screw (35), and an end clamping plate (37) is provided at the inner end of the inner push screw (35).
2. The plastic hardness testing fixture according to claim 1, It is characterized in that An inwardly extending plate (24) is provided at the upper end of the clamping plate.
3. The plastic hardness testing fixture according to claim 2, It is characterized in that A U-shaped groove (25) is formed at the inner end of the inner extension plate (24).
4. The plastic hardness testing fixture according to claim 1, It is characterized in that A rotating seat is provided on the circumferential side of the round table (10), an adjusting screw rod (3) is rotatably provided on the rotating seat, a rotating cap (30) is provided at the outer end of the adjusting screw rod (3), a screw connection plate (31) is provided on the adjusting screw rod (3), an L-shaped plate (32) is mounted on the screw connection plate (31), and the L-shaped plate (32) is mounted on one end of a backing plate (33).