Die for testing wear-resistant sample plate

Abstract

The utility model relates to the technical field of wear resistance testing, in particular to a wear-resistant sample plate testing mold which comprises a mold body, a product groove is formed in the upper surface of the mold body, and containing grooves used for containing leftover materials are formed in the upper surface of the mold body around the product groove by a circle at intervals. The side wall face of the side, close to the product groove, of the containing groove is higher than the groove bottom face of the containing groove and lower than the upper surface of the mold body, and a partition plate used for forming a notch in the leftover material is arranged in the containing groove. According to the utility model, a gap can be formed on the leftover material of the wear-resistant test sample plate after extrusion forming, so that the leftover material can be directly broken off from the wear-resistant test sample plate from the gap by a worker easily, and the production efficiency of the wear-resistant test sample plate is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of wear-resistant testing, and more specifically, to a wear-resistant test sample mold. Background Art

[0002] In order to verify the wear resistance of plastic materials, it is usually necessary to make the plastic material into a sample through a flat vulcanizer and then place it in a wear tester for wear resistance testing. During the production process, in order to make the sample into the required shape, a mold is made as needed. In order to ensure that the manufactured sample meets the requirements, an appropriate excess of plastic material is generally put into the mold, which will result in scraps on the edge of the manufactured sample. Therefore, the scraps of the sample need to be broken off before the sample can be tested for wear resistance. Since the flat vulcanizer applies uniform pressure to the plastic material during the sample production process, the excess scraps will be evenly pressed out in all directions, forming a complete scrap ring around the sample. Due to the complete structure of the scrap ring, there is a lack of force points when breaking it off manually, which makes manual breaking difficult and reduces the production efficiency of testing wear-resistant samples.

[0003] There is a Chinese utility model with the announcement number CN213704233U, which discloses a bushing injection mold, including a base plate, a lower mold fixedly mounted at the center of the top of the base plate, a movable mold core movably connected to the inner cavity of the lower mold, first cylinders fixedly mounted on both sides of the top of the base plate, an upper mold fixedly mounted on the top of the first cylinder, a latent gate provided on one side of the upper mold, a side of the lower mold, and a side of the movable mold core, and a cutting groove provided on one side of the latent gate. The bushing injection mold is moved downward to a position in contact with the baffle by the second cylinder, thereby driving the baffle and the cutting knife to move downward. Since the cutting groove is connected to the latent gate, the latent gate is convenient for separating the bushing from the scrap after injection molding, preventing the scrap from detaching from the latent gate and driving the bushing in the movable mold core to move, causing the bushing to deform and affecting the quality of the bushing.

[0004] However, in the above technical solution, the scraps are cut by setting a cutting knife, which has a complex structure and high cost. In addition, during the plastic production process, the molten plastic is easily squeezed into the cutting knife, and after solidification, it adheres to the cutting knife, causing the cutting knife to be unable to move normally and easily causing malfunctions. Utility Model Content

[0005] In order to solve the problem that scraps generated when making test wear-resistant templates in the existing technology are difficult to peel off, the utility model provides a test wear-resistant template grinding tool, which makes it easy for humans to break off the scraps directly from the test wear-resistant template from the notch, thereby improving the production efficiency of the test wear-resistant template. The structure is simple and reliable, the cost is low, and there will be no malfunction.

[0006] In order to solve the above technical problems, the utility model provides a test wear-resistant sample mold, including a mold body, a product groove is provided on the upper surface of the mold body, and the upper surface of the mold body is provided with receiving grooves for accommodating scraps at intervals around the product groove. The side wall surface of the receiving groove close to the side of the product groove is higher than the bottom surface of the receiving groove and lower than the upper surface of the mold body, and a partition is provided in the receiving groove for forming a notch on the scrap.

[0007] In this technical solution, a test wear-resistant prototype mold is used to produce a wear-resistant prototype. The mold body is mounted on a flat-plate vulcanizing press, and a product slot is centrally located on the upper surface of the mold. To produce the test wear-resistant prototype, the raw material for the test wear-resistant prototype is first placed in the product slot. The flat-plate vulcanizing press is then started, which heats and extrudes the raw material in the product slot, melting it and filling the slot. The shape of the product slot matches the shape of the product. After the raw material cools and solidifies, it is removed from the product slot, ultimately producing the finished product. During the production process, to ensure that the test wear-resistant prototype mold meets the requirements and it is difficult to ensure the exact amount of raw material used, an excess of raw material is typically placed in the product slot. This can cause the raw material to overflow the product slot during the subsequent heating and extrusion process of the flat-plate vulcanizing press. A receiving slot is provided on the upper surface of the mold body, which is connected to the product slot. Raw material that overflows the product slot can be discharged into the receiving slot. The receiving slot is arranged around the product slot, so that any raw material that overflows from the product slot in all directions can eventually flow into the receiving slot. After the raw material solidifies, a ring of scrap material forms around the finished sample. This ring needs to be separated from the finished sample, and is typically broken off manually. However, since the scrap material forms a ring around the sample and has a relatively complete structure, manual breaking lacks an ideal point of force, making it difficult to break off the material. To facilitate breaking off the scrap, partitions are installed within the holding tank. These partitions divide the holding tank into multiple, relatively independent sections, creating gaps in the finished scrap ring and disrupting the ring structure. Manual breaking allows the scrap material to be directly broken off from the finished sample at the gaps, improving breaking efficiency.

[0008] Preferably, the lower surface of the partition is connected to the bottom of the receiving groove, the length of the partition is the same as the groove width of the receiving groove, and the length direction of the partition is in the same direction as the width direction of the receiving groove.

[0009] Preferably, the upper surface of the partition is flush with the upper surface of the mold body.

[0010] Preferably, the width of the partition is 20 mm to 30 mm.

[0011] Preferably, the accommodating groove is an annular groove, and a plurality of the partitions are provided, and the plurality of the partitions are evenly arranged along the circumferential direction of the accommodating groove.

[0012] Preferably, a discharge ring for discharging gas and excess raw materials is formed on the mold body between the product groove and the receiving groove, and the upper surface of the discharge ring is lower than the upper surface of the mold body.

[0013] Preferably, the upper surface of the discharge ring is an inclined surface that slopes downward from the product groove toward the receiving groove.

[0014] Preferably, the height of the side of the discharge ring connected to the product groove is 3 mm to 4 mm lower than the upper surface of the mold body.

[0015] Preferably, a fixing column is further provided on the mold body and located in the center of the product groove.

[0016] Preferably, the fixing column is a cylindrical structure, and the upper surface of the fixing column is flush with the upper surface of the mold body.

[0017] Compared with the prior art, the beneficial effect of the present invention is that: in the present invention, a receiving groove is provided outside the product groove to accommodate scraps formed by excess raw materials, and a partition is also provided in the receiving groove. The partition separates the original complete annular structure of the scraps to form a gap, so that the scraps can be easily broken off from the finished product sample. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 This is a three-dimensional diagram of the wear-resistant sample mold for testing the utility model.

[0019] Figure 2 This is a half-section diagram of the wear-resistant test sample mold of the utility model;

[0020] Figure 3 yes Figure 2 Enlarged view of point A in the middle.

[0021] In the accompanying drawings: 1. mold body; 2. product groove; 3. receiving groove; 4. partition; 5. discharge ring; 6. fixing column. DETAILED DESCRIPTION

[0022] The drawings are for illustrative purposes only and should not be construed as limiting this patent. To better illustrate the embodiments, some components in the drawings may be omitted, enlarged, or reduced in size, and do not represent actual product dimensions. Those skilled in the art will understand that some well-known structures and their descriptions may be omitted from the drawings. The positional relationships depicted in the drawings are for illustrative purposes only and should not be construed as limiting this patent.

[0023] The same or similar numbers in the drawings of the embodiments of the present invention correspond to the same or similar parts; in the description of the present invention, it should be understood that if there are terms such as "upper", "lower", "left", "right", "long", "short", etc. indicating directions or positional relationships, they are based on the directions or positional relationships shown in the drawings. This is only for the convenience of describing the present invention and simplifying the description, and does not indicate or imply that the device or element referred to must have a specific direction, be constructed and operated in a specific direction. Therefore, the terms describing the positional relationship in the drawings are only used for illustrative purposes and cannot be understood as limiting this patent. For ordinary technicians in this field, the specific meanings of the above terms can be understood according to specific circumstances.

[0024] The technical solution of the present invention is further described in detail below through specific embodiments and in conjunction with the accompanying drawings:

[0025] Example 1

[0026] like Figure 1As shown, a test wear-resistant sample mold is characterized in that it includes a mold body 1, a product groove 2 is provided on the upper surface of the mold body 1, and a receiving groove 3 for receiving scraps is provided on the upper surface of the mold body 1 around the product groove 2. The side wall surface of the receiving groove 3 close to the product groove 2 is higher than the groove bottom surface of the receiving groove 3 and lower than the upper surface of the mold body 1. A partition 4 for forming a notch on the scrap is provided in the receiving groove 3. The test wear-resistant sample mold is used to make wear-resistant samples, wherein the mold body 1 is installed on a flat vulcanizing machine, and the product groove 2 is provided in the center of the upper surface of the test wear-resistant sample mold. When making the test wear-resistant sample, the raw material of the test wear-resistant sample is first placed in the product groove 2, and then the flat vulcanizing machine is started. The flat vulcanizing machine heats and extrudes the product groove 2 so that the raw material is melted and fills the product groove 2. The shape of the product groove 2 matches the shape of the product. After the raw material cools and solidifies, it is removed from the product groove 2 to finally obtain a finished product. During the production process, in order to ensure that the produced test wear-resistant sample mold meets the requirements, and it is difficult to ensure that the amount of raw materials is completely accurate, an excessive amount of raw materials is generally placed in the product tank 2, which will cause the raw materials to overflow the product tank 2 during the subsequent heating and extrusion process of the flat vulcanizer. The upper surface of the mold body 1 is provided with a receiving tank 3, which is connected to the product tank 2, and the raw materials overflowing the product tank 2 can be discharged into the receiving tank 3. The receiving tank 3 is arranged around the product tank 2, and the raw materials overflowing from the product tank 2 in all directions can eventually flow into the receiving tank 3. When the raw materials solidify, a scrap ring is formed around the sample at the foreign exchange of the finished sample. The scrap ring needs to be separated from the finished sample. Generally, the scrap is separated from the finished sample by manual breaking. However, since the scrap is a scrap ring around the sample, the structure is relatively complete, and there is a lack of an ideal force point for manual breaking, which makes it difficult to break it off. In order to facilitate the removal of scraps, a partition 4 is provided in the receiving groove 3. The partition 4 divides the receiving groove 3 into multiple relatively independent spaces, so that a gap is formed on the completed scrap ring, destroying the complete ring structure. When manually removing the scraps, the scraps can be directly removed from the finished sample at the gap, thereby improving the removal efficiency.

[0027] like Figure 1As shown, the lower surface of the partition 4 is connected to the bottom of the receiving groove 3. The length of the partition 4 is the same as the groove width of the receiving groove 3, and the length direction of the partition 4 is the same as the width direction of the receiving groove 3. The partition 4 is used to occupy the space within the product groove 4, preventing the flow of molten raw materials. The raw materials that eventually flow into the product groove 4 after cooling and solidification form scraps. The scraps at the partition 4 are then notched. The notch destroys the intact ring structure of the scraps, resulting in a difference in force between the notch and the rest of the scraps, making the notch easy to break off. The lower surface of the partition 4 is connected to the groove bottom of the receiving groove 3, ensuring that the partition 4 is firmly connected to the receiving groove 3 and is not likely to break, resulting in the partition 4 remaining in the product. The length of the partition 4 is the same as the groove width of the receiving groove 3, and the length of the partition 4 is the same as the width direction of the receiving groove 3, so that the partition 4 can span the entire receiving groove 3, ensuring that the scraps in the receiving groove 3 have notches along the width direction of the receiving groove 3.

[0028] like Figure 2 As shown, the upper surface of the partition 4 is flush with the upper surface of the mold body 1. When extrusion is performed, the upper surface of the mold body 1 is in close contact with the flat vulcanizer, and the upper surface of the partition 4 is flush with the upper surface of the mold body 1. Therefore, the upper surface of the partition 4 is also in close contact with the flat vulcanizer, completely separating the receiving tank 2, so that the raw materials flowing into the receiving tank 2 are divided into independent parts on both sides of the partition 4. When the scraps are cooled and solidified, a completely separated gap is formed at the partition 4, which makes it easier to apply force to the gap and finally break the scraps off manually.

[0029] like Figure 1 As shown, the width of the separator 4 is 20mm to 30mm. The separator 4 has a blocking effect on the molten raw materials. If the separator 4 is too wide, it will block a considerable range of raw materials during extrusion in the flat vulcanizer, resulting in excessive pressure on the raw materials in this range. To facilitate the removal of scrap materials, a larger gap is required. Taking both factors into consideration, the width of the separator 4 should be 20mm to 30mm.

[0030] like Figure 1 As shown, the receiving groove 3 is an annular groove, and multiple partitions 4 are provided, and the multiple partitions 4 are evenly arranged along the circumference of the receiving groove 3. The multiple partitions 4 divide the scrap ring into multiple independent parts, reducing the connection area between the scrap of each independent part and the product, making the scrap of each independent part easier to break off, thereby reducing the labor burden of manual breaking and improving the efficiency of scrap breaking.

[0031] Example 2

[0032] This embodiment is similar to the above embodiment 1, except that Figure 1As shown, a discharge ring 5 for discharging gas and excess raw materials is formed on the mold body 1 between the product groove 2 and the receiving groove 3, and the upper surface of the discharge ring 5 is lower than the upper surface of the mold body 1. When producing the sample, the plate vulcanizer can only abut against the upper surface of the mold body 1 and cannot extend into the product groove 2 and the receiving groove 3. The upper surface of the discharge ring 5 is lower than the upper surface of the mold body 1, so that there is a gap between the upper surface of the discharge ring and the plate vulcanizer. The gap constitutes a channel connecting the product groove 2 and the receiving groove 3. When the plate vulcanizer extrude the raw materials, the excess raw materials and air in the product groove 2 can be discharged into the receiving groove 3 through the discharge ring 5 after being extruded. At the same time, the discharge ring 5 also has the function of limiting the flow of raw materials out of the product groove 5 to a certain extent, so that the molten raw materials will not overflow too much, ensuring that the raw materials in the product groove 2 are compacted, and ensuring that the finished product sample meets the test requirements.

[0033] like Figure 3 As shown, the upper surface of the discharge ring 5 is an inclined surface that slopes downward from the product groove 2 toward the receiving groove 3. When producing a wear-resistant test specimen, the upper surface of the mold body 1 is sealed, and a channel connecting the product groove 2 and the receiving groove 3 is formed between the plane of the upper surface of the mold body 1 and the discharge ring 5. Because the upper surface of the discharge ring 5 is an inclined surface that slopes downward from the product groove 2 toward the receiving groove 3, the channel is narrower near the product groove 2 and wider near the receiving groove 3. During extrusion in the flat plate vulcanizer, the pressure decreases toward the receiving groove 3, making the extrusion process smoother. Furthermore, because the end near the product groove 2 is narrower, higher pressure is required to pass through, which, to a certain extent, restricts the flow of raw material out of the product groove 5, preventing excessive overflow of the molten raw material and ensuring that the raw material in the product groove 2 is compacted. Furthermore, after the raw material solidifies, the thickness of the raw material on the side of the discharge ring 5 near the product groove 2 will also be thinner, making it easier to break off.

[0034] like Figure 3 As shown, the height of the side of the discharge ring 5 connected to the product groove 2 is 3mm to 4mm lower than the upper surface of the mold body 1. This side of the discharge ring 5 connected to the product groove 2 must, on the one hand, satisfy the need to discharge excess material, requiring it to be a certain distance below the upper surface of the mold body 1. On the other hand, it must prevent excessive material from overflowing, ensuring that the material in the product groove 2 is compacted. Furthermore, to ensure that the material in this area is thin enough to be easily broken off after solidification, this area is as close to the upper surface of the mold body 1 as possible. Taking these two requirements into consideration, the height of the side of the discharge ring 5 connected to the product groove 2 is 3mm to 4mm lower than the upper surface of the mold body 1.

[0035] Example 3

[0036] This embodiment is similar to the above embodiment 1, except that Figure 1As shown, a fixing post 6 is provided on the mold body 1 and in the center of the product groove 2. After the production is completed, a fixing hole will be formed at the fixing post 6 on the finished sample, and the fixing hole can be used to fix the finished sample on the testing instrument.

[0037] like Figure 2 As shown, the fixing column 6 is a cylindrical structure, and the upper surface of the fixing column 6 is flush with the upper surface of the mold body 1. The fixing hole formed at the fixing column 6 is a circular through hole, and the finished sample can be fixed to the test instrument by fastening bolts.

[0038] Obviously, the above embodiments of the present invention are merely examples for the purpose of clearly illustrating the present invention, and are not intended to limit the implementation methods of the present invention. A person skilled in the art will be able to make other variations or modifications based on the above description. It is not necessary and impossible to enumerate all implementation methods here. Any modifications, equivalent substitutions, and improvements made within the spirit and principles of the present invention shall be included within the scope of protection of the claims of the present invention.

Claims

1. A wear-resistant sample mold for testing, characterized in that: The invention comprises a mold body (1), wherein the upper surface of the mold body (1) is provided with a product groove (2), and the upper surface of the mold body (1) is provided with accommodating grooves (3) for accommodating scraps at intervals around the product groove (2), wherein the side wall surface of the accommodating groove (3) close to the product groove (2) is higher than the groove bottom surface of the accommodating groove (3) and lower than the upper surface of the mold body (1), and a partition (4) for forming a notch on the scrap is provided in the accommodating groove (3).

2. A wear-resistant sample mold for testing according to claim 1, characterized in that: The lower surface of the partition (4) is connected to the bottom of the receiving groove (3), the length of the partition (4) is the same as the groove width of the receiving groove (3), and the length direction of the partition (4) is in the same direction as the width direction of the receiving groove (3).

3. A wear-resistant sample mold for testing according to claim 1, characterized in that: The upper surface of the partition (4) is flush with the upper surface of the mold body (1).

4. A wear-resistant sample mold for testing according to claim 1, characterized in that: The width of the partition (4) is 20 mm to 30 mm.

5. A wear-resistant sample mold for testing according to any one of claims 1 to 4, characterized in that: The accommodating groove (3) is an annular groove, and a plurality of the partition plates (4) are provided, and the plurality of the partition plates (4) are evenly arranged along the circumferential direction of the accommodating groove (3).

6. A wear-resistant sample mold for testing according to claim 1, characterized in that: A discharge ring (5) for discharging gas and excess raw materials is formed on the mold body (1) between the product groove (2) and the receiving groove (3), and the upper surface of the discharge ring (5) is lower than the upper surface of the mold body (1).

7. A wear-resistant sample mold for testing according to claim 6, characterized in that: The upper surface of the discharge ring (5) is an inclined surface that slopes downward from the product groove (2) toward the receiving groove (3).

8. A wear-resistant sample mold for testing according to claim 6, characterized in that: The height of the side of the discharge ring (5) connected to the product groove (2) is 3 mm to 4 mm lower than the upper surface of the mold body (1).

9. A wear-resistant sample mold for testing according to claim 1, characterized in that: A fixing column (6) is also provided on the mold body (1) and located in the center of the product groove (2).

10. A wear-resistant sample mold for testing according to claim 9, characterized in that: The fixing column (6) is a cylindrical structure, and the upper surface of the fixing column (6) is flush with the upper surface of the mold body (1).

Images