Mold for forming a rubber elastomeric pad

Abstract

The application relates to the technical field of rubber product forming equipment, in particular to a mold for forming a rubber elastic pad plate, which comprises a support frame composed of a bottom support plate, a top support plate and vertical support rods, a lower mounting block is installed on the bottom support plate, an upper mounting block capable of moving along the vertical support rods is arranged above the lower mounting block, a first telescopic piece on the top support plate drives the upper mounting block to move, an upper die head is arranged on the lower surface of the upper mounting block, a lower die head is arranged on the upper surface of the lower mounting block, and a refrigeration assembly is arranged in the upper mounting block and the lower mounting block; an ejection assembly is arranged on the bottom support plate. The mold precision is improved through a multiple-direction guiding structure, the refrigeration assembly accelerates cooling and shortens the production cycle, the symmetrical ejection assembly ensures that the finished product is smoothly ejected, the buffer spring reduces the abrasion of the mold, the product has the advantages of high qualification rate, high production efficiency and long service life of the mold, and the mold is suitable for batch production of the rubber elastic pad plate.

Description

Technical Field

[0001] This application relates to the field of rubber product molding equipment technology, and in particular to a mold for molding rubber elastic pads. Background Technology

[0002] Rubber elastic pads are widely used in rail transportation, building vibration damping, and mechanical cushioning. Their molding quality directly affects the final product's vibration damping performance, service life, and safety stability. In the production process of rubber elastic pads, the mold is the core molding equipment, and its structural design plays a decisive role in product precision, production efficiency, and production costs.

[0003] In existing technologies, molds used for molding rubber elastic pads typically include upper and lower die heads and a drive mechanism. The drive mechanism drives the upper die head to press down and close with the lower die head, injecting rubber raw material into the mold cavity to complete the molding process. However, these molds generally suffer from the following problems: First, insufficient guiding accuracy during mold closing leads to misalignment between the upper and lower die heads, resulting in uneven thickness and edge burrs on the molded rubber pads, reducing the product qualification rate. Second, after the rubber raw material solidifies in the mold cavity, it usually relies on natural cooling, which is inefficient and prolongs the production cycle, making it difficult to meet the needs of large-scale mass production. Third, the ejection mechanism is poorly designed, easily causing compression damage to the rubber elastic pads during ejection, compromising the product's elastic properties and appearance quality. Fourth, the impact force during mold closing lacks effective buffering, which not only exacerbates the wear of mold components and shortens the mold's lifespan but may also cause mold cavity deformation due to instantaneous impact, further affecting the product molding accuracy. Utility Model Content

[0004] This utility model addresses the aforementioned problems in the existing technology by providing a mold for molding rubber elastic pads.

[0005] The objective of this utility model is mainly achieved through the following solution: A mold for molding a rubber elastic pad includes a support frame, the support frame including a bottom support plate, a top support plate and vertical support rods located at the four corners between the bottom support plate and the top support plate. A lower mounting block is installed on the upper surface of the bottom support plate, and an upper mounting block that can move up and down along the vertical support rods is provided above the lower mounting block. A mounting frame is provided on the upper surface of the top support plate, and a first telescopic member is installed on the mounting frame. The first telescopic member can drive the upper mounting block to move up and down. An upper mold head is installed in the middle of the lower surface of the upper mounting block, and a lower mold head is installed in the middle of the upper surface of the lower mounting block. Both the upper and lower mounting blocks have cooling components installed inside. The upper surface of the bottom support plate is also equipped with an ejection assembly for ejecting the finished product.

[0006] Preferably, there are two first telescopic members, which are located at a pair of corners on the upper surface of the upper mounting block. The upper surface of the upper mounting block is also provided with two guide rods, which are located at opposite corners of the upper mounting block.

[0007] Preferably, the top support plate has a through hole for the guide rod to pass through, and the upper end of the guide rod passes through the top support plate and is fixed with a limiting plate.

[0008] Preferably, guide sleeves are provided at both the front and rear ends of the left and right sidewalls of the upper mounting block, and the guide sleeves are slidably connected to the outer sidewall of the vertical support rod.

[0009] Preferably, the lower surface of the upper mold head is provided with an upper mold groove, the upper surface of the lower mold head is provided with a lower mold groove corresponding to the upper mold groove, and the middle part of the upper mounting block and the middle part of the upper mold head are provided with a glue injection channel communicating with the upper mold groove.

[0010] Preferably, the ejection assembly includes two symmetrically arranged second telescopic members, and the lower die head is provided with two ejection channels, with an ejector head slidably connected in the ejection channel. The telescopic end of the second telescopic member passes through the upper surface of the lower mounting block and is connected to the ejector head.

[0011] Preferably, the cooling component is a cooling plate, and the cooling component in the upper mounting block is located on the left and right sides of the upper mold head, and the cooling component in the lower mounting block is located on the left and right sides of the lower mold head. The side walls of both the upper and lower mounting blocks are provided with heat dissipation channels for the cooling component to dissipate heat.

[0012] Preferably, the upper surface of the lower mounting block is provided with mounting grooves at all four corners, and guide posts are vertically provided in the mounting grooves. The lower surface of the upper mounting block is provided with guide grooves at all four corners that cooperate with the guide posts.

[0013] Preferably, a buffer spring is also installed in the mounting groove, and the buffer spring is sleeved on the outer wall of the guide post.

[0014] In summary, compared with the prior art, the present invention has the following beneficial technical effects: (1) This utility model forms a multi-guide structure by cooperating the vertical support rod with the guide sleeve, cooperating the guide column with the guide groove, and cooperating the guide rod with the through hole of the top support plate. This effectively improves the stability and accuracy of the movement of the upper mounting block, ensures that the upper mold head and the lower mold head are accurately aligned and molded, avoids product defects caused by alignment deviation, and significantly improves the product qualification rate. (2) The present invention symmetrically sets cooling components in the upper and lower mounting blocks, which can uniformly and quickly cool the mold cavity, accelerate the curing and molding of rubber raw materials, and significantly shorten the cooling time compared with natural cooling, thereby shortening the overall production cycle, improving production efficiency, and meeting the needs of large-scale mass production. (3) This utility model uses two symmetrically arranged second telescopic parts to drive the ejector head to eject the finished product, which realizes the balanced force on the finished product, avoids product deformation or damage caused by uneven force during ejection, and ensures that the elastic performance and appearance quality of the finished product are not affected. (4) By setting buffer springs and limiting plates, this utility model can buffer the downward impact force of the upper mounting block during the mold closing process, while limiting the downward stroke of the upper mounting block, avoiding rigid collision of mold components, reducing mold wear, and extending the service life of the mold. Attached Figure Description

[0015] Figure 1 This is a schematic diagram of the structure of this utility model; Figure 2 This is a cross-sectional view of the present invention.

[0016] Reference numerals: 1. Bottom support plate; 2. Top support plate; 3. Vertical support rod; 4. Lower mounting block; 5. Upper mounting block; 6. Mounting bracket; 7. First telescopic component; 8. Upper mold head; 9. Lower mold head; 10. Cooling component; 11. Guide rod; 12. Limiting plate; 13. Guide sleeve; 14. Upper mold groove; 15. Lower mold groove; 16. Injection channel; 17. Second telescopic component; 18. Ejection channel; 19. Ejector head; 20. Heat dissipation channel; 21. Mounting groove; 22. Guide post; 23. Buffer spring. Detailed Implementation

[0017] The technical solution of this utility model will be further described in detail below through specific embodiments and in conjunction with the accompanying drawings. It should be understood that the implementation of this utility model is not limited to the following embodiments, and any modifications and / or alterations made to this utility model will fall within the protection scope of this utility model.

[0018] like Figure 1 , 2As shown, this utility model discloses a technical solution: a mold for molding rubber elastic pads, including a support frame. The support frame consists of a bottom support plate 1, a top support plate 2, and four vertical support rods 3. The four vertical support rods 3 are respectively fixedly installed at the four corners between the bottom support plate 1 and the top support plate 2 by bolts, forming a stable frame structure. A lower mounting block 4 is fixedly installed on the upper surface of the bottom support plate 1 by bolts. An upper mounting block 5 is provided above the lower mounting block 4. Guide sleeves 13 are welded and fixed to the front and rear ends of the left and right side walls of the upper mounting block 5. The guide sleeves 13 are slidably sleeved on the outer side walls of the vertical support rods 3, so that the upper mounting block 5 can move stably up and down along the vertical support rods 3.

[0019] A mounting bracket 6 is welded or bolted to the upper surface of the top support plate 2. The mounting bracket 6 has a U-shaped structure, with its open end facing downwards and fixedly connected to the top support plate 2. Two first telescopic components 7 are fixedly mounted on the mounting bracket 6 via mounting seats. In this embodiment, the first telescopic components 7 are hydraulic cylinders. The two hydraulic cylinders are located at opposite corners of the upper surface of the upper mounting block 5. The telescopic ends of the hydraulic cylinders pass through the top support plate 2 and are fixedly connected to the upper surface of the upper mounting block 5 by bolts, which can stably drive the upper mounting block 5 to move up and down. Two guide rods 11 are welded or bolted to the other opposite corner of the upper surface of the upper mounting block 5. A through hole is provided on the top support plate 2 corresponding to the position of the guide rod 11. The upper end of the guide rod 11 passes through the through hole and is welded or bolted to a limit plate 12. The diameter of the limit plate 12 is larger than the diameter of the through hole, which can effectively limit the downward stroke of the upper mounting block 5.

[0020] An upper mold head 8 is detachably and fixedly mounted on the lower surface of the upper mounting block 5 via bolts. A lower mold head 9 is detachably and fixedly mounted on the upper surface of the lower mounting block 4 at the position corresponding to the upper mold head 8 via bolts. An upper mold groove 14 is formed on the lower surface of the upper mold head 8, and a lower mold groove 15 matching the upper mold groove 14 is formed on the upper surface of the lower mold head 9. When the upper mold head 8 and the lower mold head 9 are closed, the upper mold groove 14 and the lower mold groove 15 together form a mold cavity for molding a rubber elastic pad. A glue injection channel 16 is formed through the middle of the upper mounting block 5 and the middle of the upper mold head 8. The lower end of the glue injection channel 16 is connected to the upper mold groove 14, and the upper end can be connected to an external glue injection device to facilitate the injection of rubber raw materials into the mold cavity.

[0021] Both the upper mounting block 5 and the lower mounting block 4 have cooling components 10 installed inside. In this embodiment, the cooling components 10 are semiconductor cooling chips, which have the advantages of fast cooling speed, small size, and convenient control. The two semiconductor cooling chips in the upper mounting block 5 are respectively embedded and installed on the left and right sides of the upper mold head 8, and the two semiconductor cooling chips in the lower mounting block 4 are respectively embedded and installed on the left and right sides of the lower mold head 9. Heat dissipation channels 20 are opened on the side walls of the upper mounting block 5 and the lower mounting block 4 corresponding to the positions of the semiconductor cooling chips to ensure stable cooling effect.

[0022] An ejection assembly is also installed on the upper surface of the bottom support plate 1. The ejection assembly includes two symmetrically arranged second telescopic members 17. In this embodiment, the second telescopic members 17 are small cylinders. The two small cylinders are fixed to the left and right sides of the upper surface of the bottom support plate 1 by mounting seats. An ejection channel 18 is provided on the lower mold head 9 corresponding to the positions of the two small cylinders. An ejector head 19 is slidably connected in the ejection channel 18. The upper end of the ejector head 19 is flush with the bottom of the lower mold groove 15, and the lower end passes through the lower mounting block 4 and is fixedly connected to the telescopic end of the small cylinder by a coupling. When the rubber elastic pad is formed, the small cylinder drives the ejector head 19 to move upward and eject the finished product from the lower mold groove 15.

[0023] Mounting slots 21 are provided at the four corners of the upper surface of the lower mounting block 4. Guide posts 22 are vertically welded or bolted into the mounting slots 21. Guide grooves (not shown in the figure) are provided at the four corners of the lower surface of the upper mounting block 5 corresponding to the positions of the guide posts 22. The diameter of the guide posts 22 matches the inner diameter of the guide grooves, facilitating the insertion of the guide posts 22 into the guide grooves. A buffer spring 23 is also installed in the mounting slot 21. The buffer spring 23 is sleeved on the outer wall of the guide post 22. Its upper end can contact the lower surface of the upper mounting block 5, and its lower end is fixedly connected to the bottom of the mounting slot 21. It can buffer the impact force of the upper mounting block 5 during the mold closing process.

[0024] The working process of this embodiment is as follows: First, the upper mounting block 5 is driven to move downward by the first telescopic member 7. Under the multiple guiding actions of the guide sleeve 13 and the vertical support rod 3, the guide column 22 and the guide groove, and the guide rod 11 and the top support plate 2, the upper mounting block 5 moves downward smoothly until the upper mold head 8 and the lower mold head 9 are precisely closed. At this time, the buffer spring 23 is compressed to buffer the impact force on the upper mounting block 5. Then, the external glue injection equipment is connected to the glue injection channel 16, and the rubber raw material is injected into the mold cavity through the glue injection channel 16. After the glue injection is completed, the cooling component 10 is started, and the semiconductor cooling chip cools the upper mold head 8 and the lower mold head 9 to accelerate the curing and molding of the rubber raw material in the mold cavity. When the rubber raw material is completely cured, the first telescopic member 7 drives the upper mounting block 5 to move upward and reset. Finally, the second telescopic member 17 is started, and the second telescopic member 17 drives the ejector head 19 to move upward, ejecting the molded rubber elastic pad from the lower mold groove 15 to complete one molding operation.

[0025] The above are all preferred embodiments of this application, and are not intended to limit the scope of protection of this application. Therefore, all equivalent changes made in accordance with the structure, shape and principle of this application should be covered within the scope of protection of this application.

Claims

1. A mold for molding rubber elastic pads, comprising a support frame, characterized in that: The support frame includes a bottom support plate (1), a top support plate (2), and vertical support rods (3) located at the four corners between the bottom support plate (1) and the top support plate (2). A lower mounting block (4) is installed on the upper surface of the bottom support plate (1). An upper mounting block (5) that can move up and down along the vertical support rod (3) is provided above the lower mounting block (4). A mounting frame (6) is provided on the upper surface of the top support plate (2). A first telescopic member (7) is installed on the mounting frame (6). The first telescopic member (7) can drive the upper mounting block (5) to move up and down. An upper mold head (8) is installed in the middle of the lower surface of the upper mounting block (5), and a lower mold head (9) is installed in the middle of the upper surface of the lower mounting block (4). A refrigeration component (10) is installed inside both the upper mounting block (5) and the lower mounting block (4). The upper surface of the bottom support plate (1) is also equipped with an ejection assembly for ejecting the finished product.

2. The mold for molding a rubber elastic pad according to claim 1, characterized in that: The first telescopic member (7) is provided in two parts, and is located at a pair of corners on the upper surface of the upper mounting block (5); The upper surface of the upper mounting block (5) is also provided with two guide rods (11), which are located at the other opposite corners of the upper mounting block (5).

3. The mold for molding a rubber elastic pad according to claim 2, characterized in that: The top support plate (2) has a through hole through which the guide rod (11) passes, and the upper end of the guide rod (11) passes through the top support plate (2) and is fixed with a limit plate (12).

4. The mold for molding a rubber elastic pad according to claim 1, characterized in that: The upper mounting block (5) has guide sleeves (13) at both ends of the left and right side walls, and the guide sleeves (13) are slidably connected to the outer side wall of the vertical support rod (3).

5. The mold for molding a rubber elastic pad according to claim 1, characterized in that: The lower surface of the upper mold head (8) is provided with an upper mold groove (14), the upper surface of the lower mold head (9) is provided with a lower mold groove (15) corresponding to the upper mold groove (14), and the middle part of the upper mounting block (5) and the middle part of the upper mold head (8) are provided with a glue injection channel (16) communicating with the upper mold groove (14).

6. The mold for molding a rubber elastic pad according to claim 5, characterized in that: The ejection assembly includes two symmetrically arranged second telescopic members (17) on the left and right. The lower die head (9) is provided with two ejection channels (18) on the left and right. An ejection head (19) is slidably connected in the ejection channel (18). The telescopic end of the second telescopic member (17) passes through the upper surface of the lower mounting block (4) and is connected to the ejection head (19).

7. The mold for molding a rubber elastic pad according to claim 1, characterized in that: The cooling component (10) uses a cooling plate, and the cooling component (10) in the upper mounting block (5) is located on the left and right sides of the upper mold head (8), and the cooling component (10) in the lower mounting block (4) is located on the left and right sides of the lower mold head (9). The side walls of the upper mounting block (5) and the lower mounting block (4) are provided with heat dissipation channels (20) for the cooling component (10) to dissipate heat.

8. The mold for molding a rubber elastic pad according to claim 1, characterized in that: The lower mounting block (4) has mounting grooves (21) at the four corners of its upper surface, and guide posts (22) are vertically arranged in the mounting grooves (21). The upper mounting block (5) has guide grooves at the four corners of its lower surface that cooperate with the guide posts (22).

9. The mold for molding a rubber elastic pad according to claim 8, characterized in that: A buffer spring (23) is also installed in the mounting groove (21), and the buffer spring (23) is sleeved on the outer wall of the guide post (22).

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