High-efficiency injection molding die for ball bearing retainer

Abstract

This utility model provides a high-efficiency injection molding mold for ball bearing cages, relating to the field of injection mold technology. It includes a base plate, a movable plate, and a top plate. A positioning frame is fixedly connected to the upper end of the base plate, and a set of grooves is provided on the front and rear sides of the lower end of the positioning frame. A lower template is movably mounted inside the positioning frame, and a circular hole is provided on the lower template. A sealing ring A is fitted on the outer side of the upper end of the lower template, and a groove is provided at the lower end of the lower template. Four sets of limiting rods are fixedly connected to the lower end of the top plate, and the bottom surface of the limiting rods is fixedly connected to the top surface of the base plate. A cooling pipe located inside the lower template facilitates rapid heat dissipation, accelerates cooling speed, shortens the molding cycle, and improves production efficiency. Simultaneously, a connecting pipe connects the cooling pipe to an external cooling system, allowing the cooling medium to circulate within the cooling pipe, ensuring the continuity and stability of cooling. This solves the problem of insufficient cooling effect in existing high-efficiency injection molding molds for ball bearing cages.

Description

Technical Field

[0001] This utility model belongs to the field of injection mold technology, and more specifically, it relates to a high-efficiency injection molding mold for ball bearing cages. Background Technology

[0002] High-efficiency injection molding molds for ball bearing cages are used for the rapid and high-quality production of ball bearing cages. Through injection molding, molten plastic is injected into the mold cavity, and after cooling and solidification, the shape of the ball bearing cage is formed. These high-efficiency injection molding molds for ball bearing cages are mainly used in the bearing manufacturing industry to produce various types of ball bearing cages, including deep groove ball bearing cages and angular contact ball bearing cages. However, currently used high-efficiency injection molding molds for ball bearing cages have insufficient cooling effect, failing to remove heat from the mold in time, thus prolonging the molding cycle and reducing production efficiency. Therefore, a new type of high-efficiency injection molding mold for ball bearing cages is needed. Utility Model Content

[0003] To address the aforementioned technical problems, this utility model provides a high-efficiency injection molding die for ball bearing cages, thereby solving the problem of insufficient cooling effect in existing high-efficiency injection molding dies for ball bearing cages.

[0004] This utility model discloses a high-efficiency injection molding die for ball bearing cages, achieved through the following specific technical means:

[0005] A high-efficiency injection molding mold for ball bearing cages includes a base plate, a movable plate, and a top plate;

[0006] A positioning frame is fixedly connected to the upper end of the base plate, and a set of grooves is provided on the front and rear sides of the lower end of the positioning frame. A lower template is movably fitted inside the positioning frame. The lower template has a round hole. A sealing ring A is fitted on the outer side of the upper end of the lower template. The lower end of the lower template has a groove. Four sets of limiting rods are fixedly connected to the lower end of the top plate, and the bottom surface of the limiting rods is fixedly connected to the top surface of the base plate. A round hole is provided at the center end of the top plate, and a hydraulic rod is fixedly connected in the round hole at the center end of the top plate. Four sets of round holes are provided on the movable plate, and the four sets of limiting rods are respectively fitted into the four sets of round holes on the movable plate. The top surface of the movable plate is fixedly connected to the lower surface of the hydraulic rod. An upper template is fixedly connected to the lower end of the movable plate, and a sealing ring B is provided on the upper template.

[0007] Furthermore, the positioning frame has round holes at both ends, and a set of injection tubes are respectively inserted into the round holes at both ends of the positioning frame. The injection tubes are inserted into the lower template, and a set of sealing sleeves are connected to the two sets of injection tubes respectively.

[0008] Furthermore, the lower template is provided with a cooling pipe inside, and two sets of connecting pipes are connected to the cooling pipe. The connecting pipes pass through the lower template and through the positioning frame. One set of connecting pipes is placed on the upper front side of the positioning frame, and the other set of connecting pipes is placed on the lower rear side of the positioning frame. A heat-conducting plate is movably installed in the groove at the lower end of the lower template, and the two ends of the heat-conducting plate are installed in the grooves on the front and rear sides of the lower end of the positioning frame.

[0009] Furthermore, the lower end of the upper template is movably connected to a connector, and four sets of positioning components are fixedly connected to the outer side of the upper end of the connector. The positioning components are the same size as the positioning components.

[0010] Furthermore, the connector is provided with eight sets of round holes, and eight sets of miniature electric cylinders are installed inside the connector. The push rod of the miniature electric cylinder is connected to a push rod, and the push rod is fitted into the round hole on the connector.

[0011] Compared with the prior art, the present invention has the following beneficial effects:

[0012] 1. By setting up injection tubes, this utility model facilitates the insertion of two sets of injection tubes into the lower mold, and the injection tubes are connected with sealing sleeves, which can reduce the unevenness of material flow during injection molding and reduce the probability of product defects, such as avoiding problems such as material shortage caused by insufficient local mold filling and deformation caused by unbalanced material flow.

[0013] 2. This utility model, by setting up a cooling pipe located inside the lower mold, facilitates the rapid removal of heat, accelerates the cooling speed, shortens the molding cycle, and improves production efficiency. At the same time, the connecting pipe connects the cooling pipe to the external cooling system, allowing the cooling medium to circulate in the cooling pipe, ensuring the continuity and stability of cooling.

[0014] 3. By setting a heat-conducting plate, the heat-conducting plate is movably installed in the groove at the lower end of the lower template, which helps to transfer heat to the positioning frame, increases the heat dissipation area, and allows the heat to be dissipated into the surrounding environment more quickly. Attached Figure Description

[0015] Figure 1 This is a schematic diagram of the structure of this utility model.

[0016] Figure 2 This is a cross-sectional structural diagram of the positioning frame of this utility model.

[0017] Figure 3 This is a cross-sectional structural diagram of the lower template of this utility model.

[0018] Figure 4 This is a schematic diagram of the upper template of this utility model.

[0019] Figure 5This is a cross-sectional structural diagram of the connector of this utility model.

[0020] In the diagram, the correspondence between component names and drawing numbers is as follows:

[0021] 1. Base plate; 2. Positioning frame; 3. Movable plate; 4. Top plate; 5. Limiting rod; 6. Hydraulic rod; 7. Lower template; 8. Sealing ring A; 9. Injection tube; 10. Heat-conducting plate; 11. Connecting pipe; 12. Positioning component one; 13. Sealing sleeve; 14. Cooling pipe; 15. Upper template; 16. Sealing ring B; 17. Connecting component; 18. Positioning component two; 19. Top rod; 20. Miniature electric cylinder. Detailed Implementation

[0022] The embodiments of this utility model will be described in further detail below with reference to the accompanying drawings and examples. The following examples are for illustrative purposes only and should not be construed as limiting the scope of this utility model.

[0023] Example:

[0024] As attached Figure 1 To be continued Figure 5 As shown:

[0025] This utility model provides a high-efficiency injection molding mold for ball bearing cages, including a base plate 1, a movable plate 3, and a top plate 4;

[0026] A positioning frame 2 is fixedly connected to the upper end of the base plate 1, and a set of grooves is provided on the front and rear sides of the lower end of the positioning frame 2. A lower template 7 is movably installed inside the positioning frame 2. The lower template 7 has a round hole. A sealing ring A8 is fitted on the outer side of the upper end of the lower template 7. The lower end of the lower template 7 has a groove. Four sets of limiting rods 5 are fixedly connected to the lower end of the top plate 4, and the bottom surface of the limiting rods 5 is fixedly connected to the top surface of the base plate 1. A round hole is provided at the center end of the top plate 4, and a hydraulic rod 6 is fixedly connected in the round hole at the center end of the top plate 4. Four sets of round holes are provided on the movable plate 3, and the four sets of limiting rods 5 are respectively installed in the four sets of round holes on the movable plate 3. The top surface of the movable plate 3 is fixedly connected to the lower surface of the hydraulic rod 6. An upper template 15 is fixedly connected to the lower end of the movable plate 3, and a sealing ring B16 is provided on the upper template 15.

[0027] Among them, such as Figure 2 and Figure 3As shown, the positioning frame 2 has round holes at both ends, and a set of injection tubes 9 are respectively installed in the round holes at both ends of the positioning frame 2. The injection tubes 9 are inserted into the lower mold plate 7, and a set of sealing sleeves 13 are connected to the two sets of injection tubes 9 respectively. Simultaneous injection from both ends of the positioning frame 2 through the two sets of injection tubes 9 can make the plastic melt fill the mold cavity more evenly. Compared with a single injection port, it can reduce the unevenness of material flow during injection and reduce the probability of product defects, such as avoiding problems such as material shortage caused by insufficient local filling and deformation caused by unbalanced material flow. In addition, the sealing sleeves can effectively prevent the leakage of plastic melt during injection, which helps to improve the quality and appearance of the molded product.

[0028] Among them, such as Figure 3 As shown, the lower template 7 is equipped with a cooling pipe 14 inside, and two sets of connecting pipes 11 are connected to the cooling pipe 14. The connecting pipes 11 pass through the lower template 7 and through the positioning frame 2. One set of connecting pipes 11 is placed on the upper front side of the positioning frame 2, and the other set of connecting pipes 11 is placed on the lower rear side of the positioning frame 2. A heat-conducting plate 10 is movably installed in the groove at the lower end of the lower template 7, and the two ends of the heat-conducting plate 10 are installed in the grooves on the front and rear sides of the lower end of the positioning frame 2. The cooling pipe 14 is located inside the lower template 7, which can quickly remove heat, accelerate the cooling speed, shorten the molding cycle, and improve production efficiency. At the same time, the connecting pipes 11 connect the cooling pipe 14 to the external cooling system, so that the cooling medium can circulate in the cooling pipe 14, ensuring the continuity and stability of cooling. The heat-conducting plate 10 can effectively transfer heat to the positioning frame, increase the heat dissipation area, and make the heat dissipate to the surrounding environment more quickly.

[0029] Among them, such as Figure 1 , Figure 4 and Figure 5 As shown, a connector 17 is movably connected to the lower end of the upper template 15. Four sets of positioning parts 18 are fixedly connected to the outer side of the upper end of the connector 17. The positioning parts 18 are the same size as the positioning parts 12. The connector 17 has eight sets of round holes, and eight sets of miniature electric cylinders 20 are installed inside the connector 17. The push rod of the miniature electric cylinder 20 is connected to the ejector rod 19. The ejector rod 19 is fitted into the round hole on the connector 17. After the push rod of the miniature electric cylinder 20 drives the ejector rod 19 to extend, it cooperates with the ejector rod 19 through the four sets of positioning parts 18 and the four sets of positioning parts 12 to stabilize the shape of the cage during the injection molding process. After the injection molding is completed, the push rod of the miniature electric cylinder 20 drives the ejector rod 19 to retract, perform preliminary demolding of the cage, and leave round holes for installing ball bearings, which also facilitates subsequent demolding operations.

[0030] The specific usage and function of this embodiment are as follows:

[0031] like Figures 1 to 5As shown, in this utility model, simultaneous injection from both ends of the positioning frame 2 via two sets of injection tubes 9 allows the plastic melt to fill the mold cavity more evenly. Compared to a single injection port, this reduces the unevenness of material flow during injection, lowering the probability of product defects. For example, it avoids problems such as material shortages due to insufficient local filling or deformation caused by unbalanced material flow. Furthermore, the use of a sealing sleeve effectively prevents leakage of the plastic melt during injection, which helps improve the quality and appearance of the molded product. After the push rod of the micro electric cylinder 20 extends the ejector rod 19, it cooperates with the ejector rod 19 through four sets of positioning parts 2 18 and four sets of positioning parts 12 to stabilize the shape of the retainer during injection. After injection, the push rod of the micro electric cylinder 20 retracts the ejector rod 19, performing initial demolding of the retainer and leaving a round hole for installing the ball bearings, which also facilitates subsequent demolding operations.

[0032] Any aspects of this utility model not described in detail are well-known technologies to those skilled in the art.

Claims

1. A high efficiency injection molding mold for a ball bearing cage, characterized by: It includes a base plate (1), a movable plate (3), and a top plate (4); The upper end of the base plate (1) is fixedly connected to a positioning frame (2), and the lower end of the positioning frame (2) is provided with a set of grooves on the front and rear sides respectively. The lower template (7) is movably installed inside the positioning frame (2). The lower template (7) is provided with a round hole. A sealing ring A (8) is fitted on the outer side of the upper end of the lower template (7). The lower end of the lower template (7) is provided with a groove. The lower end of the top plate (4) is fixedly connected to four sets of limiting rods (5), and the bottom surface of the limiting rods (5) is flush with the top of the base plate (1). The top plate (4) is fixedly connected to the end surface. The center end of the top plate (4) is provided with a round hole, and a hydraulic rod (6) is fixedly connected in the round hole at the center end of the top plate (4). The movable plate (3) is provided with four sets of round holes, and four sets of limiting rods (5) are respectively installed in the four sets of round holes on the movable plate (3). The top surface of the movable plate (3) is fixedly connected to the lower surface of the hydraulic rod (6). The lower end of the movable plate (3) is fixedly connected to the upper template (15), and a sealing ring B (16) is provided on the upper template (15).

2. A high efficiency injection molding die for a ball bearing retainer cage as set forth in claim 1, characterized in that: The positioning frame (2) has round holes at both ends, and a set of injection tubes (9) are respectively installed in the round holes at both ends of the positioning frame (2). The injection tubes (9) are inserted into the lower template (7), and a set of sealing sleeves (13) are respectively connected to the two sets of injection tubes (9).

3. A high efficiency injection molding die for a ball bearing retainer cage as set forth in claim 1, characterized in that: The lower template (7) is provided with a cooling pipe (14) inside, and two sets of connecting pipes (11) are connected to the cooling pipe (14). The connecting pipes (11) pass through the lower template (7) and through the positioning frame (2). One set of connecting pipes (11) is placed on the upper front end of the positioning frame (2), and the other set of connecting pipes (11) is placed on the lower rear end of the positioning frame (2). A heat-conducting plate (10) is movably installed in the groove at the lower end of the lower template (7), and the two ends of the heat-conducting plate (10) are installed in the grooves on the front and rear sides of the lower end of the positioning frame (2).

4. A high efficiency injection molding die for a ball bearing retainer cage as set forth in claim 1, characterized in that: The lower end of the upper template (15) is movably connected to a connector (17), and four sets of positioning parts two (18) are fixedly connected to the outer side of the upper end of the connector (17). The positioning parts two (18) are the same size as the positioning parts one (12).

5. A high efficiency injection molding die for a ball bearing retainer cage as set forth in claim 4, characterized in that: The connector (17) is provided with eight sets of round holes, and eight sets of miniature electric cylinders (20) are installed inside the connector (17). The push rod of the miniature electric cylinder (20) is connected to a push rod (19), and the push rod (19) is fitted into the round hole on the connector (17).

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