Plastic product hardness detection equipment

Abstract

The utility model belongs to the technical field of plastic product detection, and particularly relates to plastic product hardness detection equipment which comprises a machine base used for detecting the hardness of a plastic product, the top of the machine base is fixedly connected with a mounting base, the inner wall of the top of the mounting base is fixedly connected with an air cylinder, and an output shaft of the air cylinder is fixedly connected with an extrusion head. And two detection seats are arranged at the top of the machine base. According to the utility model, the structural design is reasonable, the two detection seats are arranged, and the switching mechanism is moved, so that the two detection seats can be switched, the plastic sample strip on one side can be subjected to hardness detection, and the plastic sample strip on the other side can be disassembled, assembled and replaced, so that the working efficiency of hardness detection is greatly improved; and the positioning mechanism is arranged, so that the positions of the two detection seats moving to the extrusion head each time are consistent, the consistency of the detection positions of the to-be-detected plastic sample strips is ensured, and detection errors caused by different hardness detection positions are avoided.

Description

Technical Field

[0001] The utility model relates to the technical field of plastic product detection, in particular to a plastic product hardness detection device. Background Art

[0002] Plastic products are products that are processed and formed using plastic as raw materials. Usually, the plastic raw materials undergo a certain fusion reaction to form a plastic finished product with a certain size. Therefore, after the plastic products are processed and formed, the hardness measurement of the plastic products is an important operation to obtain plastic parameters to ensure the life of the hard plastic during use. After searching: Patent number CN220188184U is a plastic product hardness testing device, which relates to the technical field of plastic product production, including a compression body, an ejection groove is opened on the compression body, and an ejection arc plate is arranged inside the ejection groove for rotation. The ejection arc plate is controlled by an ejection power assembly, and the ejection arc plate is arc-shaped, and the size of the ejection arc plate and the ejection groove match. And a plastic product hardness testing device with patent number CN213239804U, including a shell and a knob, a knob is installed on the right end of the shell, a hardness gauge is arranged on the front end outer wall of the shell, a control key is arranged on the front end outer wall of the shell on the upper side of the hardness gauge, a pressure block is arranged on the inner wall of the upper end of the shell on the lower side of the hardness gauge, a lifting seat is arranged on the inner wall of the lower end of the shell on the lower side of the pressure block, and a connecting rod is sleeved on the upper end of the lifting seat.

[0003] However, the above-mentioned plastic product hardness testing device still has some shortcomings when it is used. Only one testing table is set. In actual operation, it is generally necessary to test multiple plastic splines. When testing the second plastic spline, it is necessary to first loosen the clamp, remove the tested plastic spline, and then put the second plastic spline in and fix it with the clamp before performing the hardness test. This causes more trouble and the hardness test efficiency is slow. Therefore, we propose a plastic product hardness testing device to solve the above problems. Utility Model Content

[0004] The utility model aims to solve the above-mentioned shortcomings and proposes a plastic product hardness testing device.

[0005] In order to achieve the above purpose, the utility model adopts the following technical solutions:

[0006] A plastic product hardness testing device comprises a machine base used for testing the hardness of plastic products, wherein a mounting base is fixedly connected to the top of the machine base, a cylinder is fixedly connected to the top inner wall of the mounting base, an extrusion head is fixedly connected to the output shaft of the cylinder, two testing seats are placed on the top of the machine base, the two testing seats are fixedly connected to each other, a placement groove is provided on the top of the testing seat, a clamping mechanism for fixing the plastic product is provided between the placement groove and the testing seat, a slide groove is provided on the top of the machine base, a movable switching mechanism is provided between the machine base, the slide groove and the two testing seats, grooves are provided on the inner walls on both sides of the slide groove, a positioning mechanism is provided in the groove, and a controller is fixedly connected to the front side of the mounting seat.

[0007] Specifically, two vertical slots are provided on the top of the detection seat, and the clamping mechanism includes a rotating shaft rotatably connected to the bottom inner wall of the vertical slot and a torsion spring fixedly connected to the bottom inner wall of the vertical slot, the top end of the torsion spring is fixedly connected to the front side of the rotating shaft, and the top end of the rotating shaft is fixedly connected to a limiting plate.

[0008] Specifically, the sides of the two limiting plates that are close to each other extend to above the placement groove.

[0009] Specifically, the two torsion springs are respectively sleeved on the outer sides of the corresponding rotating shafts.

[0010] Specifically, the mobile switching mechanism includes a servo motor fixedly connected to one side of the machine base and a transverse screw rod rotatably connected to the inner walls on both sides of the slide groove. The output shaft of the servo motor is fixedly connected to one end of the transverse screw rod. The outer threaded sleeve of the transverse screw rod is provided with a moving seat, and the two detection seats are fixedly connected to the top of the moving seat.

[0011] Specifically, the movable seat sliding sleeve is arranged in the sliding groove.

[0012] Specifically, the positioning mechanism includes a pressure sensor fixedly connected to the inner wall of one side of the groove and a return spring fixedly connected to the inner wall of the other side of the groove, one end of the return spring is fixedly connected to a pressure block, the pressure block cooperates with the pressure sensor, and a resistance rod is fixedly connected to the side of the pressure block away from the pressure sensor, and the resistance rod on the left side is movably abutted against one side of the moving seat.

[0013] Specifically, the pressing block is slidably sleeved in the groove, and the return spring is sleeved on the outer side of the abutting rod.

[0014] In the utility model, a plastic product hardness testing device is provided with two testing seats and placement slots, so as to facilitate the placement of two plastic splines to be tested for hardness. When placing, the limit plate is toggled to make the rotating shaft rotate and drive the torsion spring to twist and store energy. The limit plate rotates to a position where the placement slot is not limited. At this time, the plastic spline can be placed in the placement slot. After placement, the limit plate is loosened. At this time, under the torsion force of the torsion spring, the two rotating shafts and the limit plate are reversed and reset, so that the plastic spline can be limited and fixed. Then, the extrusion head can be driven downward by the cylinder to test the hardness of the plastic spline on one testing seat, and the other testing seat can be used to disassemble and replace the tested plastic spline, so that the hardness of the plastic spline can be tested while the plastic spline can be disassembled and replaced, which greatly improves the working efficiency of hardness testing.

[0015] In the utility model, a plastic product hardness testing device is described. When the test is completed, the servo motor is started, the servo motor drives the rotation of the transverse screw rod, and the transverse screw rod drives the lateral movement of the moving seat and the two testing seats, so that the plastic spline and the testing seat that have been tested can be moved out, and the plastic spline and the testing seat to be tested can be moved in. When the moving seat moves to abut against the resistance rod on one side, the resistance rod will be squeezed. As the moving seat continues to move, it will drive the movement of the resistance rod and the pressure block and stretch the reset spring until the pressure block squeezes the pressure sensor. At this time, the pressure sensor transmits a signal to the controller, and the controller turns off the servo motor. At this time, the plastic spline and the testing seat to be tested move in and move just below the extrusion head, so that the detection position of each plastic spline to be tested is consistent, thereby improving the accuracy of hardness testing.

[0016] The utility model has a reasonable structural design. Two detection seats are provided, and a switching mechanism is used to switch between the two detection seats, so that the hardness of the plastic spline on one side can be tested while the plastic spline on the other side can be disassembled and replaced, which greatly improves the working efficiency of hardness testing. A positioning mechanism is provided so that the two detection seats are moved to the same position of the extrusion head each time, ensuring the consistency of the detection position of each plastic spline to be tested, and avoiding the occurrence of detection errors caused by different hardness detection positions. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 This is a structural schematic diagram of a plastic product hardness testing device proposed by the utility model;

[0018] Figure 2 This is a cross-sectional view of a plastic product hardness testing device proposed by the utility model;

[0019] Figure 3 A three-dimensional diagram of a positioning mechanism of a plastic product hardness testing device proposed by the utility model;

[0020] Figure 4 for Figure 2 Schematic diagram of the structure of part A.

[0021] In the figure: 1. machine base; 2. slide groove; 3. horizontal screw rod; 4. detection seat; 5. placement groove; 6. limit plate; 7. servo motor; 8. mounting seat; 9. cylinder; 10. extrusion head; 11. controller; 12. pressure sensor; 13. pressure block; 14. reset spring; 15. resistance rod; 16. moving seat; 17. groove; 18. vertical groove; 19. torsion spring; 20. rotating shaft. DETAILED DESCRIPTION

[0022] The technical solutions in the embodiments of the present invention will be described clearly and completely below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than all of the embodiments.

[0023] Reference Figure 1-4 A plastic product hardness testing device includes a machine base 1 for testing the hardness of plastic products, a mounting base 8 is fixedly connected to the top of the machine base 1, a cylinder 9 is fixedly connected to the top inner wall of the mounting base 8, an extrusion head 10 is fixedly connected to the output shaft of the cylinder 9, two detection seats 4 are placed on the top of the machine base 1, the two detection seats 4 are fixedly connected to each other, a placement groove 5 is provided on the top of the detection seat 4, a clamping mechanism for fixing the plastic product is provided between the placement groove 5 and the detection seat 4, a slide groove 2 is provided on the top of the machine base 1, a mobile switching mechanism is provided between the machine base 1, the slide groove 2 and the two detection seats 4, grooves 17 are provided on the inner walls on both sides of the slide groove 2, a positioning mechanism is provided in the groove 17, and a controller 11 is fixedly connected to the front side of the mounting base 8.

[0024] Furthermore, two vertical slots 18 are provided on the top of the detection seat 4, and the clamping mechanism includes a rotating shaft 20 rotatably connected to the inner wall at the bottom of the vertical slot 18 and a torsion spring 19 fixedly connected to the inner wall at the bottom of the vertical slot 18, the top of the torsion spring 19 is fixedly connected to the front side of the rotating shaft 20, and the top of the rotating shaft 20 is fixedly connected to a limiting plate, and the sides of the two limiting plates 6 close to each other extend to the top of the placement slot 5. When placing, the limiting plate 6 is moved to rotate the rotating shaft 20 and drive the torsion spring 19 to twist and store energy. The limiting plate 6 rotates to a position where it does not limit the placement groove 5. At this time, the plastic spline can be placed in the placement groove 5. After placement, the limiting plate 6 is released. At this time, under the torsion of the torsion spring 19, the two rotating shafts 20 and the limiting plate 6 are reversed and reset, so that the plastic spline can be limited and fixed. When disassembling, the limiting plate 6 is moved to rotate to a position where it does not limit the plastic spline, and the plastic spline can be taken out, thereby making the disassembly, assembly and placement of the plastic spline more convenient, thereby improving the efficiency of hardness testing.

[0025] Furthermore, the two torsion springs 19 are respectively sleeved on the outer sides of the corresponding rotating shafts 20, which is conducive to guiding the torsion springs 19 and making their movement more stable.

[0026] Furthermore, the mobile switching mechanism includes a servo motor 7 fixedly connected to one side of the machine base 1 and a transverse screw rod 3 rotatably connected to the inner walls on both sides of the slide groove 2. The output shaft of the servo motor 7 is fixedly connected to one end of the transverse screw rod 3. The outer threaded sleeve of the transverse screw rod 3 is provided with a moving seat 16. The two detection seats 4 are fixedly connected to the top of the moving seat 16. The moving seat 16 is slidably sleeved in the slide groove 2. When switching the two detection seats 4, the servo motor 7 is started, and the servo motor 7 drives the rotation of the transverse screw rod 3. The transverse screw rod 3 drives the moving seat 16 and the two detection seats 4 to move horizontally, so that the plastic spline and the detection seat 4 that have been tested can be moved out, and the plastic spline and the detection seat 4 to be tested can be moved in, which is conducive to switching between the two detection seats 4.

[0027] Furthermore, the positioning mechanism includes a pressure sensor 12 fixedly connected to the inner wall of one side of the groove 17 and a return spring 14 fixedly connected to the inner wall of the other side of the groove 17. One end of the return spring 14 is fixedly connected to a pressure block 13, and the pressure block 13 cooperates with the pressure sensor 12. The side of the pressure block 13 away from the pressure sensor 12 is fixedly connected to a resistance rod 15, and the resistance rod 15 on the left side is movably abutted against one side of the moving seat 16. With the lateral movement of the moving seat 16, the resistance rod 15 and the pressure block 13 will be driven to move and stretch the return spring 14 until the pressure block 13 squeezes the pressure sensor 12. At this time, the pressure sensor 12 transmits a signal to the controller 11, and the controller 11 turns off the servo motor 7. At this time, the plastic spline to be detected and the detection seat 4 move into and just move to the bottom of the extrusion head 10, thereby making the detection position of each plastic spline to be detected consistent and improving the accuracy of hardness detection.

[0028] Furthermore, the pressing block 13 is slidably sleeved in the groove 17 , and the return spring 14 is sleeved on the outer side of the abutment rod 15 , so as to facilitate the guidance of the return spring 14 and the pressing block 13 , so that the movement thereof is more stable.

[0029] In the utility model, when in use, two detection seats 4 and placement slots 5 are provided, so as to facilitate the placement of two plastic splines to be tested for hardness. When placing, the limit plate 6 is toggled to make the rotating shaft 20 rotate and drive the torsion spring 19 to twist and store energy. The limit plate 6 rotates to a position where the placement slot 5 is not limited. At this time, the plastic spline can be placed in the placement slot 5. After placement, the limit plate 6 is loosened. At this time, under the torsion of the torsion spring 19, the two rotating shafts 20 and the limit plate 6 are reversed and reset, so that the plastic spline can be limited and fixed. Then, the extrusion head 10 can be driven downward by the cylinder 9 to test the hardness of the plastic spline on one detection seat 4, while the other detection seat 4 can be used to disassemble and replace the tested plastic spline, so that the hardness of the plastic spline can be tested while the plastic spline is disassembled and replaced, which greatly improves the working efficiency of hardness testing. Rate, when the detection is completed, the servo motor 7 is started, the servo motor 7 drives the rotation of the transverse screw rod 3, and the transverse screw rod 3 drives the moving seat 16 and the two detection seats 4 to move horizontally, so that the plastic spline and the detection seat 4 that have been detected can be moved out, and the plastic spline and the detection seat 4 to be detected can be moved in. When the moving seat 16 moves to abut against the resistance rod 15 on one side, the resistance rod 15 will be squeezed. As the moving seat 16 continues to move, it will drive the movement of the resistance rod 15 and the pressure block 13 and stretch the reset spring 14 until the pressure block 13 squeezes the pressure sensor 12. At this time, the pressure sensor 12 transmits the signal to the controller 11, and the controller 11 turns off the servo motor 7. At this time, the plastic spline and the detection seat 4 to be detected move in and just move to the bottom of the extrusion head 10, thereby making the detection position of each plastic spline to be detected consistent, thereby improving the accuracy of hardness detection.

Claims

1. A plastic product hardness testing device, characterized in that: The invention comprises a machine base (1) for testing the hardness of plastic products, wherein a mounting base (8) is fixedly connected to the top of the machine base (1), a cylinder (9) is fixedly connected to the inner wall of the top of the mounting base (8), an extrusion head (10) is fixedly connected to the output shaft of the cylinder (9), two detection bases (4) are placed on the top of the machine base (1), the two detection bases (4) are fixedly connected to each other, a placement groove (5) is provided on the top of the detection base (4), a clamping mechanism for fixing the plastic product is provided between the placement groove (5) and the detection base (4), a slide groove (2) is provided on the top of the machine base (1), a movable switching mechanism is provided between the machine base (1), the slide groove (2) and the two detection bases (4), grooves (17) are provided on the inner walls on both sides of the slide groove (2), a positioning mechanism is provided in the groove (17), and a controller (11) is fixedly connected to the front side of the mounting base (8).

2. A plastic product hardness testing device according to claim 1, characterized in that: Two vertical slots (18) are provided on the top of the detection seat (4), and the clamping mechanism comprises a rotating shaft (20) rotatably connected to the bottom inner wall of the vertical slot (18) and a torsion spring (19) fixedly connected to the bottom inner wall of the vertical slot (18), the top end of the torsion spring (19) is fixedly connected to the front side of the rotating shaft (20), and the top end of the rotating shaft (20) is fixedly connected to the limiting plate (6).

3. A plastic product hardness testing device according to claim 2, characterized in that: The sides of the two limiting plates (6) that are close to each other both extend to the top of the placement groove (5).

4. A plastic product hardness testing device according to claim 2, characterized in that: The two torsion springs (19) are respectively sleeved on the outer sides of the corresponding rotating shafts (20).

5. The plastic product hardness testing device according to claim 1, characterized in that: The mobile switching mechanism comprises a servo motor (7) fixedly connected to one side of the machine base (1) and a transverse screw rod (3) rotatably connected to the inner walls on both sides of the slide groove (2); the output shaft of the servo motor (7) is fixedly connected to one end of the transverse screw rod (3); the outer thread sleeve of the transverse screw rod (3) is provided with a mobile seat (16); and the two detection seats (4) are fixedly connected to the top of the mobile seat (16).

6. A plastic product hardness testing device according to claim 5, characterized in that: The movable seat (16) is slidably sleeved in the slide groove (2).

7. A plastic product hardness testing device according to claim 1, characterized in that: The positioning mechanism comprises a pressure sensor (12) fixedly connected to the inner wall of one side of the groove (17) and a return spring (14) fixedly connected to the inner wall of the other side of the groove (17); one end of the return spring (14) is fixedly connected to a pressure block (13); the pressure block (13) cooperates with the pressure sensor (12); a side of the pressure block (13) away from the pressure sensor (12) is fixedly connected to a resistance rod (15); the resistance rod (15) on the left side is movably abutted against one side of the moving seat (16).

8. A plastic product hardness testing device according to claim 7, characterized in that: The pressing block (13) is slidably sleeved in the groove (17), and the return spring (14) is sleeved on the outer side of the abutting rod (15).

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