Injection molding die based on self-sealing type axle box pad machining

Abstract

The utility model discloses an injection molding die based on self-sealing type axle box pad processing, which relates to the field of axle box pad processing, and adopts the technical scheme that the injection molding die comprises an axle box pad molding cavity formed by an upper die and a lower die which are matched with each other, and the upper part of the upper die is provided with a material injection pipe connected with a material injection device; the periphery of the upper part of the lower mold is communicated and connected with a material conveying pipe, and the head part of the material conveying pipe is communicated and connected with the outer side wall of the material injection pipe, so that raw materials injected into the material injection pipe by the material injection device are divided into a plurality of branches through the material conveying pipe so as to be uniformly distributed in the forming cavity; the molding device has the advantages that raw materials are injected into the material injection pipe through the material injection device, and the raw materials are divided into a plurality of branches through the material conveying pipe so as to be evenly distributed in the molding cavity.

Description

Technical Field

[0001] The utility model relates to the field of axle box pad processing, and more specifically, it relates to an injection mold for processing self-sealing axle box pads. Background Technique

[0002] Axle box pads play an important role in the axle box device of railway locomotives and vehicles. Due to their good sealing performance and reliability, self-sealing axle box pads are increasingly widely used. In the production process of self-sealing axle box pads, the performance and quality of the injection mold directly affect the product quality and production efficiency.

[0003] In the traditional injection mold during the injection process, generally a single pipeline is used for injection, and the material distribution is not uniform enough, which easily leads to inconsistent local density of the axle box pad product, affecting its sealing performance and mechanical strength. Moreover, when processing the self-sealing axle box pad with the upper and lower molds, it is necessary to set up coolant pipelines on both the upper and lower molds (2 - 6 cooling pipelines need to be set on both the upper and lower molds to well cover the mold and thus cool the injected raw materials inside), resulting in a large number of coolant pipelines and troublesome liquid supply. Summary of the Utility Model

[0004] Aiming at the deficiencies of the existing technology, the purpose of the utility model is to provide an injection mold for processing self-sealing axle box pads.

[0005] To achieve the above purpose, the utility model provides the following technical solution: An injection mold for processing self-sealing axle box pads, including a forming cavity for the axle box pad formed by the cooperation of the upper mold and the lower mold. A feeding pipe connected to a feeding device is installed on the upper part of the upper mold, and a feeding pipe is interconnected around the upper part of the lower mold. The head of the feeding pipe is interconnected with the outer side wall of the feeding pipe, so that the raw materials injected into the feeding pipe by the feeding device are divided into multiple branches through the feeding pipe and evenly distributed in the forming cavity. Coolant pipes are installed inside both the upper mold and the lower mold, and the two can be connected through a plugging method.

[0006] Preferably, a plugging pipe A is arranged at the side end of the lower mold, and a plugging pipe B is arranged at the side end of the lower mold. Rubber rings are bonded to the outer side wall of the plugging pipe A, and the sealing performance of the connection between the plugging pipe A and the plugging pipe B can be improved through the rubber rings.

[0007] Preferably, pads are installed around the bottom end of the upper mold. The upper mold can be supported by a certain height through the pads, which is convenient for cooperation with other equipment.

[0008] Preferably, a mounting seat is installed below the pads, a rubber pad is installed between the pads and the mounting seat, and a telescopic rod is also installed between the lower mold and the mounting seat. The telescopic rod maintains the linear movement of the lower mold relative to the mounting seat.

[0009] Preferably, the inside of the cushion block is hollow, and its internal space extends upward. A notch is formed on the inner bottom wall of the lower mold. An electric telescopic component is fixedly connected inside the cushion block, and a top block is installed on the transmission part of the electric telescopic component, which is convenient for taking out the formed axle box pad product.

[0010] Preferably, the electric telescopic component is an electric hydraulic rod, which can be remotely controlled by a remote control.

[0011] Preferably, a liquid inlet pipe is arranged on the coolant pipe on the upper mold, and a liquid outlet pipe is arranged on the coolant pipe on the lower mold. Liquid is introduced through the liquid inlet pipe and discharged through the liquid outlet pipe, so as to realize the circulation of the coolant inside the coolant pipe.

[0012] Compared with the prior art, the present utility model has the following beneficial effects:

[0013] 1. The present utility model moves the upper mold downward through the transmission device to close the mold with the lower mold, thereby forming a complete forming cavity for the axle box pad. Then, raw materials are injected into the injection pipe through the injection device. The raw materials are divided into multiple branches through the feeding pipe and are evenly distributed in the forming cavity, avoiding uneven distribution and ultimately affecting the sealing performance and mechanical strength. Thus, the problem that the material distribution in the background art is not uniform enough, easily leading to inconsistent local density of the axle box pad product and affecting its sealing performance and mechanical strength is solved.

[0014] 2. During the process of closing the mold of the upper mold and the lower mold, the coolant pipes in the two are also inserted into each other for communication. In this way, they can be combined in pairs, reducing the coolant pipelines and facilitating liquid supply, so as to solve the problem that there are many coolant pipelines and liquid supply is troublesome in the background art.

[0015] 3. The present utility model can drive the top block to move upward through the electric telescopic component to eject the sealed axle box pad product, which is convenient for the staff to take. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] The drawings described herein are used to provide a further understanding of the present utility model and form a part of this application. The schematic embodiments of the present utility model and their descriptions are used to explain the present utility model and do not constitute an improper limitation to the present utility model. In the drawings:

[0017] Figure 1 is a schematic diagram of the overall structure of the present utility model;

[0018] Figure 2 is a schematic diagram of the specific structure of the top of the upper mold of the present utility model;

[0019] Figure 3Schematic diagram of the specific structure at the bottom of the lower mold of the present utility model;

[0020] Figure 4 Schematic diagram of the specific structure inside the spacer block in the present utility model.

[0021] In the figure: 1. Upper mold; 2. Lower mold; 3. Injection pipe; 4. Feeding pipe; 5. Spacer block; 6. Insertion pipe A; 7. Insertion pipe B; 8. Rubber ring; 9. Telescopic rod; 10. Notch; 11. Electric telescopic component; 12. Top block; 13. Liquid inlet pipe; 14. Liquid outlet pipe; 15. Rubber pad; 16. Mounting seat. Specific embodiments

[0022] As Figures 1-4 shown, the present utility model provides an injection mold for processing a self-sealing axle box pad, including a forming cavity for the axle box pad formed by the mutual cooperation of an upper mold 1 and a lower mold 2. A feeding pipe 3 connected to a feeding device is installed on the upper part of the upper mold 1. The upper part around the lower mold 2 is interconnected with a feeding pipe 4. The head of the feeding pipe 4 is interconnected with the outer side wall of the feeding pipe 3. Cooling liquid pipes are installed inside both the upper mold 1 and the lower mold 2, and they can be connected in a plug-in manner.

[0023] During use, the upper mold 1 is moved downward through a transmission device to be closed with the lower mold 2, thus forming a complete forming cavity for the axle box pad. Then, raw materials are injected into the feeding pipe 3 through a feeding device. The raw materials are divided into multiple branches through the feeding pipe 4 (the inner diameters of the feeding pipes 4 leading to different positions are different to ensure the same feeding pressure of each feeding pipe 4) and are evenly distributed in the forming cavity to avoid ultimately affecting the sealing performance and mechanical strength due to uneven distribution. Moreover, during the process of closing the upper mold 1 and the lower mold 2, the cooling liquid pipes in the two are also plugged into each other to be interconnected, so that they can be combined in pairs, reducing the cooling liquid pipelines and facilitating liquid supply. The following is the specific structure of the plug-in:

[0024] An insertion pipe A6 is provided at the side end of the lower mold 2, and an insertion pipe B7 is provided at the side end of the lower mold 2. Rubber rings 8 are bonded to the outer side walls of the insertion pipe A6. That is, during mold closing, the insertion pipe A6 is inserted into the insertion pipe B7, and the rubber rings 8 on the outer side wall of the insertion pipe A6 are squeezed, which can improve the sealing performance of the connection between the insertion pipe A6 and the insertion pipe B7. The cooling liquid pipes in the upper mold 1 and the lower mold 2 are connected through the insertion pipe A6 and the insertion pipe B7, thereby reducing the cooling liquid pipelines.

[0025] A liquid inlet pipe 13 is provided on the coolant pipe of the upper die 1, and a liquid outlet pipe 14 is provided on the coolant pipe of the lower die 2. In this way, liquid is inlet through the liquid inlet pipe 13 and outlet through the liquid outlet pipe 14, so as to realize the circulation of the coolant inside the coolant pipe. It should be noted that the number of the liquid inlet pipe 13 and the liquid outlet pipe 14 is the same as that of the coolant pipes inside the upper die 1 or the lower die 2, and the number of the coolant pipes in the upper die 1 and the lower die 2 should also be the same (so as to be inserted into each other in pairs to form a coolant pipeline).

[0026] Spacers 5 are installed around the bottom end of the upper die 1. The upper die 1 can be supported by a certain height through the spacers 5, which is convenient for cooperation with other equipment (mainly when the height is insufficient, it is used for padding to adapt to other equipment and avoid affecting normal use due to height errors). An installation seat 16 is installed below the spacers 5, and a rubber pad 15 is installed between the spacers 5 and the installation seat 16. A telescopic rod 9 is also installed between the lower die 2 and the installation seat 16. The installation seat 16 is used for installation on relevant equipment. When the upper die 1 impacts the lower die 2, the rubber pad 15 will deform, so as to buffer the impact force and prevent the upper die and the lower die from being damaged (impact deformation). At the same time, the telescopic rod 9 expands and contracts accordingly to maintain the linear movement of the lower die 2 relative to the installation seat 16.

[0027] The inside of the spacer 5 is hollow, and its internal space extends upward. A notch 10 is formed on the inner bottom wall of the lower die 2. An electric telescopic component 11 is fixedly connected inside the spacer 5, and a top block 12 is installed on the transmission part of the electric telescopic component 11. After the raw material is cooled, the upper die 1 can be driven to move upward through the transmission device, and then the formed sealed axle box gasket product can be taken out. At this time, the electric telescopic component 11 (the electric telescopic component 11 is preferably an electric hydraulic rod) can be used to drive the top block 12 to move upward to eject the product, which is convenient for the staff to take.

[0028] The above is only the preferred embodiment of the present invention, and it is not intended to limit the present invention in any form; any ordinary technical personnel in this industry can smoothly implement the present invention according to the instructions of the attached drawings and the above description; however, any slight changes, modifications and equivalent changes made by those skilled in the art within the scope of the technical solution of the present invention by using the technical content disclosed above are all equivalent embodiments of the present invention; at the same time, any equivalent changes, modifications and evolutions made to the above embodiments according to the essential technology of the present invention still fall within the protection scope of the technical solution of the present invention.

Claims

1. An injection molding die for processing a self-sealing axle box gasket, comprising an upper die (1) and a lower die (2) that cooperate with each other to form a molding cavity for the axle box gasket, characterized in that: The upper part of the upper mold (1) is equipped with an injection pipe (3) connected to the injection device, and the upper part of the lower mold (2) is interconnected with a delivery pipe (4) around the upper part, and the head of the delivery pipe (4) is interconnected with the outer wall of the injection pipe (3), so that the raw material injected into the injection pipe (3) by the injection device is divided into multiple branches through the delivery pipe (4) to be evenly distributed in the molding cavity. Coolant pipes are installed inside the upper mold (1) and the lower mold (2), and the two can be connected by plugging.

2. The injection mold based on the self-sealing axle box gasket processing according to claim 1 is characterized in that: A plug-in tube A (6) is provided at the side end of the lower mold (2), a plug-in tube B (7) is provided at the side end of the lower mold (2), and a rubber ring (8) is bonded to the outer side wall of the plug-in tube A (6).

3. The injection molding die based on the self-sealing axle box gasket processing according to claim 1 is characterized in that: Cushion blocks (5) are installed around the bottom end of the upper mold (1).

4. The injection molding die based on the self-sealing axle box gasket processing according to claim 3 is characterized in that: A mounting seat (16) is installed below the cushion block (5), a rubber pad (15) is installed between the cushion block (5) and the mounting seat (16), and a telescopic rod (9) is also installed between the lower mold (2) and the mounting seat (16).

5. The injection molding die based on the self-sealing axle box gasket processing according to claim 3 is characterized in that: The interior of the cushion block (5) is hollow, and its internal space extends upward. A notch (10) is formed on the inner bottom wall of the lower mold (2). An electric telescopic component (11) is fixedly connected to the interior of the cushion block (5), and a top block (12) is installed on the transmission part of the electric telescopic component (11).

6. The injection molding die based on the self-sealing axle box gasket processing according to claim 5 is characterized in that: The electric telescopic component (11) is an electric hydraulic rod.

7. The injection molding die based on the self-sealing axle box gasket processing according to claim 1 is characterized in that: The cooling liquid pipe on the upper mold (1) is provided with a liquid inlet pipe (13), and the cooling liquid pipe on the lower mold (2) is provided with a liquid outlet pipe (14).

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