Refrigerator injection molding part tension testing fixture

Abstract

The utility model discloses a refrigerator injection molded part tension testing fixture, which relates to the technical field of injection molded part detection, and comprises a base, two spring exercisers are symmetrically arranged at the top of the base, clamps are fixedly arranged at the extending ends of the two spring exercisers, two gear nuts are symmetrically arranged on the outer walls of the two clamps, and the two gear nuts are arranged on the outer walls of the two gear nuts. Fasteners are inserted into the two gear nuts in a threaded mode. When the clamps move, the guide rods are driven to move synchronously, and the semicircular blocks are promoted to slide along the outer walls of the guide rods along with the movement of the guide rods, so that the hinge shafts are promoted to drive the protective cover to be attached to the two clamps, and the possibility that fragments splash out to cause injury to an operator when an injection molding part is damaged is reduced; the clamp is pulled to move through the chest expander, the gear nut is driven to rotate through the toothed plate along with movement of the clamp, the fastener is driven to move along with rotation of the gear nut, and an injection molding part in the clamp is clamped and fixed, so that the injection molding part is more convenient to fix.

Description

Technical Field

[0001] This utility model relates to the field of injection molded part testing technology, and in particular to a tensile testing tool for refrigerator injection molded parts. Background Technology

[0002] With the rapid development of the economy and society, a wide variety of extruded products have been developed, making people's daily lives more convenient. Refrigerators are indispensable in people's daily lives, as they preserve food and prevent it from spoiling. The outer shell, doors, and baffles of refrigerators are all made of injection molded parts. Injection molding involves adding raw materials to an injection molding machine and molding them. During the injection molding process, defective injection molded parts are always produced. Therefore, injection molded parts are usually subject to quality inspection before leaving the factory. Currently, most quality inspection of injection molded parts is done manually, which has problems such as low inspection efficiency.

[0003] An existing patent (publication number: CN214952639U) discloses a tensile testing tool for refrigerator injection molded parts, including a cabinet. The front end of the cabinet has a display panel and a switch. The upper end of the cabinet has a worktable. Fixed seats are located at both ends of the worktable. A tension gauge is located at both ends of the fixed seats. A telescopic rod is located at both ends of the tension gauge. A connecting rod is located at both ends of the telescopic rod. A clamp is located at both ends of the connecting rod. In implementing this solution, the following problem was found in the existing technology, which has not been adequately solved: When the device is in use, the tension gauge pulls the clamp to move, and the clamp stretches the injection molded part. When the injection molded part is damaged, some internal components can easily splash out of the device, potentially causing injury to the operator. Utility Model Content

[0004] To address the issue mentioned above where the device moves the clamp by pulling a force gauge and stretches the injection molded part, causing internal components to easily splash out of the device when the injection molded part is damaged, potentially injuring the operator.

[0005] This utility model provides a tensile testing tool for refrigerator injection molded parts, adopting the following technical solution:

[0006] A tensile testing fixture for refrigerator injection molded parts includes a base. Two tensioners are symmetrically arranged on the top of the base. A clamp is fixedly mounted on the extended end of each tensioner. Two gear nuts are symmetrically arranged on the outer walls of each clamp. Fasteners are threaded into each gear nut, with one end of each fastener passing through the gear nut and extending into the clamp. A toothed plate corresponding to the gear nut is fixedly mounted on the top of the base, meshing with the gear nut. Two protective covers are symmetrically hinged to the top of the base via a hinge shaft. A guide rod is movably inserted into the hinge shaft, with one end of the guide rod passing through the hinge shaft and fixedly connected to the clamp. A semi-circular block is fixedly mounted inside the guide rod, slidingly engaging with the outer wall of the guide rod.

[0007] The above technical solution involves first inserting both ends of the injection molded part into two clamps, then using a tensioner to move the clamps. As the clamps move, the gear plate drives the gear nut to rotate, and the rotation of the gear nut causes the fastener to move and clamp and fix the injection molded part inside the clamps, thus fixing the injection molded part inside the clamps. As the clamps move, the injection molded part is stretched, and the tension is detected by the tensioner until the injection molded part is damaged, so as to calculate the tensile force value of the injection molded part.

[0008] Optionally, in the above-mentioned tensile testing fixture for refrigerator injection molded parts, the inner wall of the fixture is provided with a groove, and the inner wall of the fixture is provided with a limiting groove corresponding to the fastener.

[0009] The above technical solution allows the injection molded part to be inserted into the fixture through the groove, and the limiting groove facilitates the limiting of the fastener.

[0010] Optionally, in the above-mentioned tensile testing fixture for refrigerator injection molded parts, the fastener includes a screw and two T-shaped plates. The screw is threaded into a gear nut, and the two T-shaped plates are symmetrically arranged at one end of the screw inserted into the limiting groove. The T-shaped plates slide against the inner wall of the limiting groove.

[0011] With the above technical solution, when the fixture moves, the gear plate drives the gear nut to rotate. As the gear nut rotates, the screw drives the T-shaped plate to move and clamp and fix the injection molded part in the fixture.

[0012] Optionally, in the above-mentioned tensile testing fixture for refrigerator injection molded parts, the protective cover is L-shaped, and after the protective cover is deflected upward, its inner wall fits against the outer wall of the fixture.

[0013] The above technical solution blocks the gap between the two clamps when the protective cover is deflected upwards.

[0014] Optionally, in the above-mentioned tensile testing fixture for refrigerator injection molded parts, the inner wall of the hinge shaft is provided with a through hole for the guide rod to pass through, and the guide rod is movably inserted into the through hole.

[0015] The above technical solution allows the guide rod to move within the hinge shaft through the through hole. When the guide rod moves, the semicircular block slides along its outer wall, thus facilitating the control of the opening and closing of the protective cover.

[0016] Optionally, in the above-mentioned tensile testing fixture for refrigerator injection molded parts, a spiral groove is provided on the outer wall of the guide rod facing the hinge shaft, and a horizontal groove is provided on the other end of the guide rod. The horizontal groove and the spiral groove are connected, and the semi-circular block slides in cooperation with the inner wall of the horizontal groove and the spiral groove.

[0017] With the above technical solution, when the guide rod moves, the semicircular block first slides along the inner wall of the spiral groove, which makes it easier to control the opening and closing of the protective cover, and the protective cover deflects at an angle of ninety degrees each time.

[0018] Optionally, in the above-mentioned tensile testing fixture for refrigerator injection molded parts, a connecting rod is fixedly provided at one end of the guide rod extending from the hinge shaft, and the end of the connecting rod away from the guide rod is fixedly connected to the outer wall of the fixture.

[0019] The above technical solution facilitates the connection of the clamp and the guide rod.

[0020] In summary, this utility model has at least one of the following beneficial effects:

[0021] When the fixture moves, it drives the guide rod to move synchronously. As the guide rod moves, it causes the semicircular block to slide along the outer wall of the guide rod, thereby causing the hinge shaft to drive the protective cover to fit against the two fixtures, thus reducing the possibility of fragments flying out and injuring the operator when the injection molded part is damaged.

[0022] The clamp is moved by a tensioner. As the clamp moves, the gear nut rotates through the toothed plate. The rotation of the gear nut causes the fastener to move and clamps and fixes the injection molded part in the clamp, making it easier to fix the injection molded part. Attached Figure Description

[0023] Figure 1 This is a three-dimensional structural schematic diagram of the present invention;

[0024] Figure 2 This is a partial three-dimensional unfolded structural schematic diagram of this utility model;

[0025] Figure 3 This is a partial three-dimensional unfolded cross-sectional view of the present invention.

[0026] In the diagram: 1. Base; 2. Tensioner; 3. Clamp; 31. Groove; 32. Limiting groove; 4. Gear nut; 5. Fastener; 51. Screw; 52. T-shaped plate; 6. Toothed plate; 7. Hinge shaft; 71. Through hole; 8. Protective cover; 9. Guide rod; 91. Spiral groove; 92. Horizontal groove; 93. Connecting rod; 10. Semicircular block. Detailed Implementation

[0027] The following is in conjunction with the appendix Figures 1-3 The present invention will be described in further detail below.

[0028] Please refer to the attached diagram in the instruction manual. Figure 1 , Figure 2 and Figure 3 This utility model provides an embodiment of a tensile testing tool for refrigerator injection molded parts, including a base 1. Two tensioners 2 are symmetrically arranged on the top of the base 1. A clamp 3 is fixedly arranged on the protruding end of each of the two tensioners 2. Two gear nuts 4 are symmetrically arranged on the outer wall of each of the two clamps 3. Fasteners 5 are threaded into each of the two gear nuts 4. One end of the fastener 5 passes through the gear nut 4 and extends into the clamp 3. A groove 31 is opened on the inner wall of the clamp 3. A limiting groove 32 corresponding to the fastener 5 is opened on the inner wall of the clamp 3. The groove 31 allows the injection molded part to be inserted into the clamp 3, and the limiting groove 32 facilitates the limiting of the fastener 5.

[0029] It should be noted that the tensile tester 2 is an existing device with a built-in tensile strength detection module, which is used to detect the tensile strength of the injection molded parts.

[0030] A toothed plate 6 corresponding to the gear nut 4 is fixedly installed on the top of the base 1. The toothed plate 6 meshes with the gear nut 4. The fastener 5 includes a screw 51 and two T-shaped plates 52. The screw 51 is threaded into the gear nut 4. The two T-shaped plates 52 are symmetrically arranged at one end of the screw 51 that is inserted into the limiting groove 32. The T-shaped plates 52 slide with the inner wall of the limiting groove 32. When the clamp 3 moves, the gear nut 4 is driven to rotate through the toothed plate 6. As the gear nut 4 rotates, the screw 51 drives the T-shaped plates 52 to move and clamp and fix the injection molded part in the clamp 3, thereby fixing the injection molded part inside the clamp 3.

[0031] The top of the base 1 is symmetrically hinged with two protective covers 8 via hinge shaft 7. The protective covers 8 are L-shaped. After the protective covers 8 are deflected upward, their inner walls fit against the outer walls of the clamps 3. When the protective covers 8 are deflected upward, they block the gap between the two clamps 3, thereby reducing the possibility of fragments flying out and injuring the operator when the injection molded part is damaged.

[0032] A guide rod 9 is movably inserted into the hinge shaft 7. A connecting rod 93 is fixedly installed at one end of the guide rod 9 that extends out of the hinge shaft 7. The end of the connecting rod 93 away from the guide rod 9 is fixedly connected to the outer wall of the clamp 3. The connecting rod 93 facilitates the connection between the clamp 3 and the guide rod 9, so that the guide rod 9 moves synchronously when the clamp 3 moves.

[0033] One end of the guide rod 9 passes through the hinge shaft 7 and is fixedly connected to the clamp 3. A semi-circular block 10 is fixedly installed inside the guide rod 9. The semi-circular block 10 slides with the outer wall of the guide rod 9. A through hole 71 is opened through the inner wall of the hinge shaft 7 for the guide rod 9 to pass through. The guide rod 9 is movably inserted into the through hole 71. The guide rod 9 can move inside the hinge shaft 7 through the through hole 71. When the guide rod 9 moves, the semi-circular block 10 slides along its outer wall, which facilitates the control of the opening and closing of the protective cover 8.

[0034] The guide rod 9 has a spiral groove 91 on its outer wall facing the hinge shaft 7, and a horizontal groove 92 on its other end. The horizontal groove 92 communicates with the spiral groove 91. The semicircular block 10 slides in cooperation with the inner wall of the horizontal groove 92 and the spiral groove 91. When the guide rod 9 moves, the semicircular block 10 first slides along the inner wall of the spiral groove 91, which facilitates the control of the opening and closing of the protective cover 8. The protective cover 8 deflects at an angle of ninety degrees each time. When the semicircular block 10 moves along the inner wall of the horizontal groove 92, it keeps the protective cover 8 stationary.

[0035] Working principle: When using this refrigerator injection molded part tensile tester, first insert both ends of the injection molded part into the two clamps 3, then pull the clamps 3 to move through the tensioner 2. As the clamps 3 move, the gear plate 6 drives the gear nut 4 to rotate. As the gear nut 4 rotates, the fastener 5 moves and clamps and fixes the injection molded part in the clamps 3, thus fixing the injection molded part in the clamps 3. As the clamps 3 move, the injection molded part is stretched. At the same time, the tensioner 2 detects the tension until the injection molded part is damaged, so as to calculate the tensile value of the injection molded part.

[0036] When the clamp 3 moves, it drives the guide rod 9 to move synchronously. As the guide rod 9 moves, it causes the semi-circular block 10 to slide along the outer wall of the guide rod 9, thereby causing the hinge shaft 7 to drive the protective cover 8 to be biased against the two clamps 3, thus reducing the possibility of fragments flying out and injuring the operator when the injection molded part is damaged.

[0037] The above are all preferred embodiments of this utility model, and are not intended to limit the scope of protection of this utility model. Therefore, all equivalent changes made to the structure, shape and principle of this utility model should be covered within the scope of protection of this utility model.

Claims

1. A refrigerator injection molding part tension gauge, comprising a base (1), characterized in that: The top of the base (1) is provided with two tensioners (2) in symmetry, the extending end of the two tensioners (2) is fixedly provided with a clamp (3), the outer wall of the two clamps (3) is provided with two gear nuts (4) in symmetry, the gear nut (4) is threadedly inserted with a fastener (5) in the two, one end of the fastener (5) extends into the clamp (3) through the gear nut (4), the top of the base (1) is fixedly provided with a toothed plate (6) corresponding to the gear nut (4), the toothed plate (6) is engaged with the gear nut (4), the top of the base (1) is symmetrically hinged with two protective covers (8) through a hinge shaft (7), the hinge shaft (7) is movably inserted with a guide rod (9), one end of the guide rod (9) is fixedly connected with the clamp (3) through the hinge shaft (7), the guide rod (9) is fixedly provided with a semicircular block (10) in the guide rod (9), the semicircular block (10) is in sliding fit with the outer wall of the guide rod (9).

2. The refrigerator injection part pull force gauge according to claim 1, characterized in that: The inner wall of the clamp (3) is provided with a groove (31), and the inner wall of the clamp (3) is provided with a limiting groove (32) corresponding to the fastener (5).

3. The refrigerator injection part pull force gauge according to claim 2, characterized in that: The fastener (5) comprises a screw rod (51) and two T-shaped plates (52), the screw rod (51) is threadedly inserted into the gear nut (4), the two T-shaped plates (52) are symmetrically arranged at one end of the screw rod (51) inserted into the limiting groove (32), and the T-shaped plate (52) is in sliding fit with the inner wall of the limiting groove (32).

4. The refrigerator injection part pull force gauge according to claim 1, characterized in that: The protective cover (8) is L-shaped, and the inner wall of the protective cover (8) is attached to the outer wall of the clamp (3) after being deflected upward.

5. The refrigerator injection part pull force gauge according to claim 1, characterized in that: The inner wall of the hinge shaft (7) is provided with a through hole (71) for the guide rod (9) to pass through, and the guide rod (9) is movably inserted into the through hole (71).

6. The refrigerator injection part pull force gauge according to claim 1, characterized in that: The outer wall of one end of the guide rod (9) towards the hinge shaft (7) is provided with a spiral groove (91), the other end of the guide rod (9) is provided with a transverse groove (92), the transverse groove (92) is in communication with the spiral groove (91), and the semicircular block (10) is in sliding fit with the inner walls of the transverse groove (92) and the spiral groove (91).

7. The refrigerator injection part pull force gauge according to claim 1, characterized in that: One end of the guide rod (9) extending out of the hinge shaft (7) is fixedly provided with a connecting rod (93), and the other end of the connecting rod (93) away from the guide rod (9) is fixedly connected with the outer wall of the clamp (3).

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