Hardness testing device for automobile plastic part mold

Abstract

The utility model discloses a hardness testing device for an automobile plastic part mould, which relates to the technical field of automobile part processing equipment, and comprises a mounting frame, a transmission component and a transmission shaft, the top of the inner wall of the mounting frame is provided with a mounting groove, and the transmission component is arranged in the mounting frame and comprises a transmission shaft rotationally connected onto the mounting frame. A transmission disc is fixedly connected to the transmission shaft, a fixing rod is slidably connected to the transmission disc, a damper is fixedly connected to the fixing rod, the damper is fixedly connected into the mounting frame, a sliding rod is fixedly connected to the fixing rod, a first transmission rod is fixedly connected to the sliding rod, and a second transmission rod is fixedly connected to the first transmission rod. The mold hardness testing device adapts to the characteristics of molds of different sizes, it is ensured that the molds can be stably clamped during hardness testing regardless of the sizes of the molds, deformation of small molds and displacement of large molds are avoided, and it is ensured that the testing result accurately reflects the real hardness of the molds.

Description

Technical Field

[0001] This utility model relates to the technical field of automotive parts processing equipment, specifically a hardness testing device for automotive plastic parts molds. Background Technology

[0002] In the automotive manufacturing industry, plastic parts are widely used in various parts of automobiles due to their inherent advantages. As a key component in the production of plastic parts, the hardness of molds significantly impacts the precision, performance, and lifespan of these parts. From raw material selection to machining, heat treatment, and surface treatment, the hardness of molds varies throughout the manufacturing process, and each stage has precise requirements for hardness. Therefore, hardness testing of automotive plastic part molds is crucial and permeates the entire mold manufacturing process. This urgently necessitates professional and efficient hardness testing equipment to drive the development of automotive mold manufacturing enterprises and contribute to the prosperity of the automotive industry.

[0003] From the perspective of the characteristics of the mold itself, there are many types of automotive plastic parts molds, with varying sizes, ranging from precision insert molds a few centimeters in size to large body panel injection molds several meters long. The quality and structural strength of molds of different sizes are vastly different. Small molds are usually more fragile, and if the clamping force is too great, it is easy to cause the mold to deform or even be damaged. Large molds, on the other hand, have a large mass and a large inertia. If the clamping force is insufficient, the mold is prone to displacement during hardness testing. Utility Model Content

[0004] The purpose of this invention is to provide a hardness testing device for automotive plastic parts molds to solve the problems mentioned in the background art.

[0005] To achieve the above objectives, this utility model provides the following technical solution: a hardness testing device for automotive plastic parts molds, comprising:

[0006] The mounting bracket has a mounting groove on the top of its inner wall;

[0007] A transmission assembly, housed within a mounting frame, includes a transmission shaft rotatably connected to the mounting frame, a transmission disc fixedly connected to the transmission shaft, a fixed rod slidably connected to the transmission disc, a damper fixedly connected to the fixed rod and fixedly connected within the mounting frame, a sliding rod fixedly connected to the fixed rod, a first transmission rod fixedly connected to the sliding rod, a second transmission rod fixedly connected to the first transmission rod, a first rotating shaft slidably connected to the second transmission rod, a second rotating shaft fixedly connected to the first rotating shaft, a third transmission rod rotatably connected to the second rotating shaft, and a downward pressure rod fixedly connected to the third transmission rod.

[0008] A torque spring is fixedly connected to the third transmission rod, the torque spring is fixedly connected to the mounting bracket, a pressure plate is slidably connected to the mounting bracket, a spring is fixedly connected between the pressure plate and the mounting bracket, and a motor is fixedly connected to the transmission shaft.

[0009] The motor is slidably connected to the mounting bracket. The motor includes a sliding block fixedly connected to the bottom of the clamping plate. A bolt is threaded onto the sliding block, and the bolt on the sliding block is slidably connected to the mounting bracket.

[0010] Furthermore, the mounting bracket has an opening, and the torque spring is fixedly connected to the opening on the mounting bracket.

[0011] The above technical solution is adopted: by opening the mounting bracket, it is easy to fix the torque spring on the mounting bracket during use, and the space occupied is reduced.

[0012] Furthermore, a slot is provided on the side of the mounting bracket near the sliding shaft, and the sliding shaft is slidably connected in the slot on the mounting bracket.

[0013] The above technical solution is adopted: by setting a sliding shaft to slide in the slot on the mounting frame, the sliding shaft is limited, and the second transmission rod is further limited, so that it can only move laterally on the mounting frame.

[0014] Furthermore, the output end of the motor is fixedly connected to the drive shaft, and the motor is fixedly connected to the mounting bracket.

[0015] The above technical solution is adopted: during use, the drive shaft is driven by a motor.

[0016] Furthermore, a limiting rod is fixedly connected to the mounting bracket, and the third transmission rod is slidably connected to the limiting rod.

[0017] The above technical solution is adopted to prevent the third transmission rod from being moved by the second transmission rod by setting a limit rod.

[0018] Furthermore, four clamping plates are provided, and all four clamping plates are slidably connected to the limiting rod. Each limiting rod and the bottom of each clamping plate is fixedly connected to a sliding block.

[0019] The above technical solution is adopted: by setting four limit rods, the operator can directly slide the four limit rods inward to achieve the initial clamping of the test piece, which is suitable for test pieces with low clamping strength.

[0020] Furthermore, the top of the inner wall of the mounting bracket is provided with an opening, and the transmission disc is slidably connected to the opening on the mounting bracket.

[0021] The above technical solution is adopted: by setting the transmission disc to slide in the opening on the mounting bracket, the transmission disc is prevented from being blocked by the mounting bracket.

[0022] Compared with the prior art, the advantages and positive effects of this utility model are as follows:

[0023] This invention employs a combination of manual and mechanical transmission. Operators first manually move the clamping plate, causing the sliding block to slide on the mounting frame, initially pressing the test piece. This process is convenient and the force is easy to control, effectively preventing excessive compression of small molds. When dealing with large body panel injection molds, which are heavy and have high inertia, the motor is started. The motor outputs power to rotate the drive shaft, and the drive disc on the drive shaft rotates accordingly. The drive disc, through a slidingly connected fixed rod, a damper connected to the fixed rod, and a sliding rod on the fixed rod, converts the rotational motion into linear motion, thereby driving the first and second drive rods to move, ultimately causing the pressing rod to press down on the pressing plate, increasing the clamping force on the mold. This tiered transmission mode perfectly adapts to the characteristics of molds of different sizes, ensuring that regardless of mold size, it can be firmly clamped during hardness testing, preventing deformation of small molds and displacement of large molds, and ensuring that the test results accurately reflect the true hardness of the mold. Attached Figure Description

[0024] Figure 1 This is a schematic diagram of the overall structure of a hardness testing device for automotive plastic parts molds.

[0025] Figure 2 This is a schematic diagram of the transmission disc position of a hardness testing device for automotive plastic parts molds.

[0026] Figure 3 This is a schematic diagram showing the disassembled state of the sliding block and clamping plate of a hardness testing device for automotive plastic parts molds.

[0027] Figure 4 This is a schematic diagram showing the position of the torque spring in a hardness testing device for automotive plastic parts molds.

[0028] Figure 5 This is a schematic diagram of the motor position in a hardness testing device for automotive plastic parts molds.

[0029] Numbering on the map:

[0030] 1. Mounting bracket;

[0031] 2. Transmission assembly; 21. Clamping plate; 22. Transmission disc; 23. Transmission shaft; 24. Damping; 25. Fixed rod; 26. Sliding rod; 27. First transmission rod; 28. Second transmission rod; 29. ​​Sliding shaft; 210. Torque spring; 211. First rotating shaft; 212. Third transmission rod; 213. Second rotating shaft; 214. Downward pressure rod; 215. Pressing plate;

[0032] 3. Motor; 31. Sliding block;

[0033] 4. Limit rod. Detailed Implementation

[0034] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0035] Example:

[0036] like Figures 1-4 As shown, this utility model provides a technical solution: a hardness testing device for automotive plastic parts molds, comprising:

[0037] Mounting bracket 1, the top of the inner wall of mounting bracket 1 is provided with a mounting groove;

[0038] Transmission assembly 2 is placed inside mounting bracket 1. Transmission assembly 2 includes a transmission shaft 23 rotatably connected to mounting bracket 1, a transmission disc 22 fixedly connected to transmission shaft 23, a fixed rod 25 slidably connected to transmission disc 22, a damper 24 fixedly connected to fixed rod 25, the damper 24 fixedly connected inside mounting bracket 1, a sliding rod 26 fixedly connected to fixed rod 25, a first transmission rod 27 fixedly connected to sliding rod 26, a second transmission rod 28 fixedly connected to first transmission rod 27, a first rotating shaft 211 slidably connected to second transmission rod 28, a second rotating shaft 213 fixedly connected to first rotating shaft 211, a third transmission rod 212 rotatably connected to second rotating shaft 213, and a downward pressure rod 214 fixedly connected to third transmission rod 212.

[0039] A torque spring 210 is fixedly connected to the third transmission rod 212. The torque spring 210 is fixedly connected to the mounting bracket 1. A pressing plate 215 is slidably connected to the mounting bracket 1. A spring is fixedly connected between the pressing plate 215 and the mounting bracket 1. A motor 3 is fixedly connected to the transmission shaft 23.

[0040] Motor 3 is slidably connected to mounting bracket 1. Motor 3 includes a sliding block 31 fixedly connected to the bottom of clamping plate 21. Bolts are threaded onto the sliding block 31, and the bolts on the sliding block 31 are slidably connected to mounting bracket 1.

[0041] In this invention, a combination of manual and mechanical transmission is employed. The operator first manually moves the clamping plate 21, causing the sliding block 31 to slide on the mounting frame 1, initially pressing the test piece. This process is convenient and the force is easy to control, effectively preventing excessive compression of small molds. When dealing with large body panel injection molds, which are heavy and have high inertia, the motor 3 is started. The motor 3 outputs power to rotate the transmission shaft 23, causing the transmission disc 22 on the transmission shaft 23 to rotate accordingly. The transmission disc 22 converts the rotational motion into linear motion through a slidingly connected fixed rod 25, a damper 24 connected to the fixed rod 25, and a sliding rod 26 on the fixed rod 25. This, in turn, drives the first transmission rod 27 and the second transmission rod 28, ultimately causing the pressing rod 214 to press down on the pressing plate 215, increasing the clamping force on the mold. This tiered transmission mode perfectly adapts to the characteristics of molds of different sizes, ensuring that regardless of mold size, it can be firmly clamped during hardness testing, preventing deformation of small molds and displacement of large molds, and ensuring that the test results accurately reflect the true hardness of the mold.

[0042] Furthermore, such as Figure 4 , Figure 5 As shown, the mounting bracket 1 has an opening, and the torque spring 210 is fixedly connected in the opening on the mounting bracket 1. By precisely drilling the opening on the mounting bracket 1, the operator can easily embed the torque spring 210 into the opening and fix it during installation. This not only optimizes the assembly process, but also makes full use of the internal space, avoids interference between components, and makes the device layout more compact and reasonable, laying a solid foundation for subsequent stable testing.

[0043] A slot is provided on the side of the mounting bracket 1 near the sliding shaft 29. The sliding shaft 29 is slidably connected in the slot on the mounting bracket 1. The slot on the mounting bracket 1 is provided so that the sliding shaft 29 can slide along the slot during use, which restricts the second transmission rod 28 to only move laterally, ensuring that the power transmission is accurate, maintaining transmission stability, and making the entire clamping action perform according to the design specifications.

[0044] The output end of motor 3 is fixedly connected to the transmission shaft 23. Motor 3 is fixedly connected to the mounting bracket 1. When in use, thanks to the rigid fixed connection between the output end of motor 3 and the transmission shaft 23, motor 3 efficiently converts electrical energy into mechanical energy to drive the transmission shaft 23 to rotate, reducing power loss, responding quickly to operation, driving the transmission component 2 to operate, and starting the mold clamping and testing process.

[0045] A limiting rod 4 is fixedly connected to the mounting frame 1, and the third transmission rod 212 is slidably connected to the limiting rod 4. The limiting rod 4 is fixed on the mounting frame 1, and the third transmission rod 212 is slidably connected to it. During operation, it effectively prevents the second transmission rod 28 from accidentally disengaging the third transmission rod 212, ensuring a unique transmission path, avoiding mis-transmission, maintaining accurate and stable operation of the device, and ensuring reliable test results.

[0046] Four clamping plates 21 are provided, and all four clamping plates 21 are slidably connected to the limiting rod 4. Each of the four clamping plates 21 has a sliding block 31 fixedly connected to its bottom. In use, the operator moves the clamping plates 21 along the limiting rod 4 to easily achieve low-strength initial clamping, which can clamp smaller parts.

[0047] The above solution also has the problem that the transmission disc 22 will collide and rub against the top of the inner wall of the mounting bracket 1 during rotation, hindering its normal rotation. Figure 2 As shown, an opening is provided at the top of the inner wall of the mounting frame 1. The transmission disk 22 is slidably connected in the opening on the mounting frame 1. The opening at the top of the inner wall of the mounting frame 1 allows the transmission disk 22 to slide, which avoids the transmission disk 22 from being obstructed from rotating. This ensures that the power is smoothly transmitted from the motor 3 to the clamping link through the transmission component 2, maintains the smooth operation of the device, and helps the hardness test to proceed smoothly.

[0048] Working principle: such as Figures 1-5 As shown, when using it, first install the hydraulic telescopic rod (model: YHG-040 series) in the mounting groove at the top of the inner wall of the mounting bracket 1, and fix the test head on the hydraulic telescopic rod;

[0049] The component to be tested is placed on the mounting frame 1. The staff directly moves the clamping plate 21, causing the clamping plate 21 to drive the sliding block 31 to slide on the mounting frame 1, pressing the component to be tested. The bolts on the sliding block 31 are tightened to fix the sliding block 31, thus achieving the initial clamping of the component to be tested.

[0050] When a large clamping force is required, the motor 3 is started, causing the transmission disk 22 to rotate. This causes the fixed rod 25 to be pushed out, and the sliding rod 26 to slide to both sides. This causes the first transmission rod 27 to drive the second transmission rod 28 to slide away from the fixed rod 25. The second transmission rod 28 displaces the first rotating shaft 211, causing it to move downwards. The torque spring 210 undergoes elastic deformation. At this time, the second rotating shaft 213 drives the pressing rod 214 to press down the pressing plate 215, causing the pressing plate 215 to compress the spring on the mounting bracket 1, and finally press it onto the component to be clamped.

[0051] The above description is merely a preferred embodiment of the present utility model and is not intended to limit the present utility model in any way. Although the present utility model has been disclosed above with reference to preferred embodiments, it is not intended to limit the present utility model. Any person skilled in the art can make some modifications or alterations to the above-described technical content to create equivalent embodiments without departing from the scope of the present utility model. The implementation schemes in the above embodiments can also be further combined or replaced. Any simple modifications, equivalent changes and alterations made to the above embodiments based on the technical essence of the present utility model without departing from the scope of the present utility model shall still fall within the scope of the present utility model.

Claims

1. A hardness testing device for automobile plastic parts mold, characterized by, Include: Mounting frame (1), the inner wall top of mounting frame (1) is provided with mounting groove; Transmission assembly (2), the transmission assembly (2) is placed in mounting frame (1), the transmission assembly (2) includes transmission shaft (23) that is rotatably connected on mounting frame (1), the transmission shaft (23) is fixedly connected with transmission disc (22), the transmission disc (22) is slidably connected with fixed rod (25), the fixed rod (25) is fixedly connected with damping (24), the damping (24) is fixedly connected in mounting frame (1), the fixed rod (25) is fixedly connected with sliding rod (26), the sliding rod (26) is fixedly connected with first transmission rod (27), the first transmission rod (27) is fixedly connected with second transmission rod (28), the second transmission rod (28) is slidably connected with first rotating shaft (211), the first rotating shaft (211) is fixedly connected with second rotating shaft (213), the second rotating shaft (213) is rotatably connected with third transmission rod (212), the third transmission rod (212) is fixedly connected with down pressure rod (214); The third transmission rod (212) is fixedly connected with torque spring (210), the torque spring (210) is fixedly connected on mounting frame (1), the mounting frame (1) is slidably connected with pressing plate (215), the pressing plate (215) and mounting frame (1) are fixedly connected with spring, the transmission shaft (23) is fixedly connected with motor (3); Motor (3), the motor (3) is slidably connected on mounting frame (1), the motor (3) includes sliding block (31) that is fixedly connected on the bottom of clamping plate (21), the sliding block (31) is threadedly connected with bolt, the bolt on the sliding block (31) is slidably connected on mounting frame (1).

2. The hardness testing device for a mold of a plastic automobile part according to claim 1, characterized in that: The mounting frame (1) is provided with opening, the torque spring (210) is fixedly connected in the opening on mounting frame (1).

3. The hardness testing device for a mold of a plastic automobile part according to claim 2, characterized in that: The side of the mounting frame (1) close to sliding shaft (29) is provided with slot, the sliding shaft (29) is slidably connected in the slot on mounting frame (1).

4. The hardness testing device for a mold of a plastic automobile part according to claim 1, characterized in that: The output end of the motor (3) is fixedly connected with transmission shaft (23), the motor (3) is fixedly connected on mounting frame (1).

5. The hardness testing device for a mold of a plastic automobile part according to claim 1, characterized in that: The mounting frame (1) is fixedly connected with limit rod (4), the third transmission rod (212) is slidably connected with limit rod (4).

6. The hardness testing device for a mold of a plastic part of an automobile according to claim 5, characterized in that: The clamping plate (21) is provided with four, four the clamping plate (21) is slidably connected with limit rod (4), limit rod (4) the clamping plate (21) bottom is fixedly connected with sliding block (31).

7. The hardness testing device for a mold of a plastic automobile part according to claim 1, characterized in that: The inner wall top of mounting frame (1) is provided with opening, the transmission disc (22) is slidably connected in the opening on mounting frame (1).

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