Injection mold for processing transmission accessories

Abstract

The utility model discloses an injection mold for processing transmission accessories. The injection mold comprises an upper mold and a lower mold, the lower die is arranged on one side of the upper die, and a plurality of die cavities are formed in the middle of the lower die at equal intervals; the device comprises an upper mold, a lower mold and a base, the base is arranged on the side, away from the upper mold, of the lower mold, the base comprises two side supporting blocks fixedly connected to the end of the lower mold, and a driving plate is arranged in the middle of each side supporting block in a sliding mode. The hole diameter of the inclined sieve plate is larger than the outer diameter of the plastic gear, it is guaranteed that the gear can fall down smoothly, and the drainage opening material is left in the hopper and facilitates follow-up centralized collection and treatment; the ejection plate and the ejector pin are driven by the air cylinder or the hydraulic cylinder for demolding, meanwhile, energy storage and release of the first spring and the second spring are utilized, rapid reset and movement of the ejection plate and the hopper are achieved, and the demolding efficiency and the screening effect are improved.

Description

Technical Field

[0001] The utility model relates to the technical field of plastic gears, in particular to an injection mold for processing transmission accessories. Background Art

[0002] Plastic gears are an important type of transmission component, widely used in various mechanical devices and systems. Compared to metal gears, plastic gears offer advantages such as light weight, low noise, excellent wear resistance, self-lubrication, and ease of processing and molding. Furthermore, plastic gears can be tailored to meet diverse application requirements, such as increasing strength, improving wear resistance, and enhancing impact resistance, by adjusting the material formulation and manufacturing process.

[0003] In the process of plastic gear processing, injection molding is mostly performed through injection molds. During the process of passing through the mold, the molding material and part of the sprue material are separated at the same time. For the materials concentrated together, they cannot be preliminarily screened and sorted during demolding, and need to be sorted twice in subsequent processing. The existing molds cannot optimize the corresponding processing procedures and improve the corresponding production efficiency. Utility Model Content

[0004] The purpose of the present utility model is to provide an injection mold for processing transmission accessories to solve the problems raised in the above background technology.

[0005] To achieve the above-mentioned purpose, the present invention provides the following technical solution: an injection mold for processing transmission accessories, comprising:

[0006] upper mold;

[0007] A lower mold is placed on one side of the upper mold, and a plurality of mold cavities are equidistantly arranged in the middle of the lower mold;

[0008] A base is placed on the side of the lower mold facing away from the upper mold, the base includes two side support blocks fixedly connected to the end of the lower mold, a driving plate is slidably provided in the middle of the side support blocks, and an ejection plate is slidably connected to the middle of the two side support blocks, the driving plate is fixedly connected to the ejection plate, and an ejector pin for demoulding is fixedly connected to one side of the ejection plate;

[0009] The hopper is slidably placed on the outside of the side support block, and an inclined screen plate is provided inside the hopper for screening the nozzle material.

[0010] Preferably, a glue injection port is provided on one side of the upper mold and a glue injection pipe is provided inside, positioning columns are fixed to the four corners of one side of the upper mold, and positioning holes are opened on one side of the lower mold corresponding to the positioning columns.

[0011] Preferably, one end of the side support block facing away from the lower mold is fixedly connected to a bottom plate, and a plurality of guide rods are fixedly connected between the lower mold and the bottom plate.

[0012] Preferably, the ejector plate is slidably mounted on the outside of the guide rod, and a No. 1 spring is sleeved on the outside of the guide rod and located between the lower mold and the ejector plate.

[0013] Preferably, the ejector pin is slidably connected to the lower mold and extends into the mold cavity of the lower mold.

[0014] Preferably, a slide bar is fixed to the outer side of the base plate, the hopper is slidably mounted on the outer side of the slide bar, and a No. 2 spring is mounted on the outer side of the slide bar and at both ends of the hopper.

[0015] Preferably, a sliding groove is provided in the middle of the side support block, and the driving plate is slidably connected to the sliding groove.

[0016] Preferably, the bottom of the hopper is detachably connected to a recovery box, one end of the recovery box is fixedly connected to a limiting hook plate, and one side of the hopper is fixedly connected to a limiting groove that cooperates with the limiting hook plate.

[0017] Compared with the prior art, the beneficial effects of the present invention are as follows: through the setting of the inclined screen plate, the outlet material can be effectively screened during the injection molding process to prevent it from mixing with the finished gear. The aperture of the inclined screen plate is larger than the outer diameter of the plastic gear, ensuring that the gear can fall smoothly, while the outlet material remains in the hopper, which is convenient for subsequent centralized collection and processing, thereby improving production efficiency and product quality; the ejector plate and the ejector pin are driven by the cylinder or hydraulic cylinder for demoulding, and the energy storage and release of the No. 1 spring and the No. 2 spring are utilized to realize the rapid resetting and movement of the ejector plate and the hopper, thereby improving the demoulding efficiency and screening effect; the recycling box that can be detachably connected at the bottom of the hopper, and the coordinated setting of the limit hook plate and the limit groove facilitate the centralized collection of small material gears, prevent the material from being scattered and mixed with the outlet material, and reduce the workload of subsequent sorting. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 This is a schematic diagram of the structure of the utility model;

[0019] Figure 2 This is the main view of the utility model;

[0020] Figure 3 This is a structural diagram of the limiting hook plate of the utility model;

[0021] Figure 4 This is a cross-sectional view of the inclined screen plate of the utility model;

[0022] Figure 5 This is a schematic diagram of the position structure of the recycling box of the utility model.

[0023] In the figure: 1. Lower mold; 2. Bottom plate; 3. Side support block; 4. Ejector plate; 5. Ejector pin; 6. Guide rod; 7. Spring No. 1; 8. Slide rod; 9. Spring No. 2; 10. Hopper; 11. Recovery box; 12. Upper mold; 13. Inclined screen plate; 14. Slide chute; 15. Drive plate; 16. Limit hook plate; 17. Limit slot. DETAILED DESCRIPTION

[0024] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the embodiments described are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0025] See also Figure 1 、 2 As shown in Figures 3, 4 and 5, the utility model provides a technical solution: an injection mold for processing transmission accessories, comprising: an upper mold 12; a lower mold 1 is placed on one side of the upper mold 12, and a plurality of mold cavities are equidistantly provided in the middle of the lower mold 1; a base is installed on the side of the lower mold 1 away from the upper mold 12, and the base comprises two side support blocks 3 fixedly connected to the end of the lower mold 1, a driving plate 15 is slidingly provided in the middle of the side support blocks 3, and an ejection plate 4 is slidingly connected to the middle of the two side support blocks 3, the driving plate 15 is fixed to the ejection plate 4, and an ejector pin 5 for demoulding is fixed to one side of the ejection plate 4; a hopper 10 is slidably placed on the outside of the side support blocks 3, and an inclined screen plate 13 is fixed to the inside of the hopper 10, and the inclined screen plate 13 is tilted downward in the direction of receiving the material, and is used for screening the sprue material.

[0026] It should be noted that the aperture in the middle of the inclined screen plate 13 of the utility model is larger than the outer diameter of the plastic gear, wherein the sprue material in the injection process is long and has multiple branches on the outside, and the sprue material cannot pass through the inclined screen plate 13. After the injection molding is completed, the machine tool drives the upper mold 12 to separate the lower mold 1. When the cylinder or hydraulic cylinder drives the ejector plate 4 and the ejector pin 5 to demold, the ejector plate 4 pushes the hopper 10 to move through the drive plate 15, so that the hopper 10 compresses the No. 2 spring 9. At the same time, when the material is demolded and falls into the inside of the hopper 10, after the ejector plate 4 is quickly reset, the hopper 10 slides on the outside of the slide bar 8 under the action of the No. 2 spring 9, so as to screen the material on the top of the inclined screen plate 13, and thus circulates to realize reciprocating injection molding and screening, and leaves the sprue material in the hopper 10 for subsequent centralized collection.

[0027] See also Figure 1 、 2As shown in FIG. 5 , a glue injection port is provided on one side of the upper mold 12 and a glue injection pipe is provided inside. Positioning columns are fixed to the four corners of one side of the upper mold 12, and positioning holes are opened on one side of the lower mold 1 corresponding to the positioning columns.

[0028] It should be noted that the glue injection port of the utility model is set on one side of the upper mold 12 to ensure that the glue can be evenly injected into the mold; the internal glue injection pipeline is a fluid dynamics optimized shape to reduce flow resistance; the positioning columns at the four corners provide stable mold alignment to ensure that the upper and lower molds are not displaced during glue injection; the positioning holes should be precisely matched with the positioning columns to ensure fast and accurate mold closing and parting.

[0029] See also Figure 2 、 3 As shown, the end of the side support block 3 facing away from the lower mold 1 is fixedly connected to the base plate 2, four guide rods 6 are fixedly connected between the lower mold 1 and the base plate 2, the ejector plate 4 is slidably installed on the outside of the guide rod 6, and a No. 1 spring 7 is sleeved on the outside of the guide rod 6 and located between the lower mold 1 and the ejector plate 4, the ejector pin 5 is slidably connected to the lower mold 1 and extends into the mold cavity of the lower mold 1, a slide groove 14 is opened in the middle of the side support block 3, and the drive plate 15 is slidably connected to the slide groove 14.

[0030] It should be noted that a driving component, such as a hydraulic cylinder or an air cylinder, is provided on the outside of the bottom plate 2 of the utility model, and its piston rod contacts the ejector plate 4 through the hole in the middle of the bottom plate 2. During demolding, the driving component drives the ejector plate 4 to push the ejector pin 5 to move into the mold cavity. At the same time, the ejector plate 4 moves outside the guide rod 6 and compresses the No. 1 spring 7. The ejector pin 5 pushes the workpiece inside the mold cavity. The ejector plate 4 pushes the driving plate 15 to slide inside the slide groove 14. The driving plate 15 pushes the hopper 10, and accumulates force by compressing the No. 2 spring 9 to facilitate subsequent screening.

[0031] See also Figure 2 、 4 As shown, a slide bar 8 is fixed to the outer side of the bottom plate 2 , a hopper 10 is slidably mounted on the outer side of the slide bar 8 , and a No. 2 spring 9 is mounted on the outer side of the slide bar 8 and at both ends of the hopper 10 .

[0032] It should be noted that, in the present invention, during the movement of the ejector plate 4, the drive plate 15 pushes the hopper 10 to slide along the slide bar 8. During this period, the hopper 10 compresses the No. 2 spring 9 on one side. When the ejector plate 4 and the drive plate 15 release the restraint on the hopper 10, under the action of the No. 2 spring 9 on both sides of the hopper 10, the hopper 10 performs a short reciprocating motion on the outside of the slide bar 8. During this period, the small gear passes through the middle of the inclined screen plate 13 and falls, and the water outlet material remains in the hopper 10, and there is no need for secondary sorting and screening after collecting the material.

[0033] See also Figure 2 、 3As shown in Figures 5 and 6, the bottom of the hopper 10 is detachably connected to a recovery box 11, one end of the recovery box 11 is fixedly connected to a limiting hook plate 16, and one side of the hopper 10 is fixedly connected to a limiting groove 17 that cooperates with the limiting hook plate 16.

[0034] It should be noted that, when processing the small gears, the present invention slides the limiting hook plate 16 and the limiting groove 17 into place from one end, so that the limiting hook plate 16 and the limiting groove 17 cooperate with each other, which facilitates the centralized collection of small material gears and prevents the materials from being scattered and mixed with the sprue materials and requiring secondary sorting.

[0035] In the description of the present invention, it should be understood that the terms "coaxial", "bottom", "one end", "top", "middle", "the other end", "upper", "one side", "top", "inside", "front", "center", "two ends", etc., indicating the orientation or position relationship, are based on the orientation or position relationship shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present invention.

[0036] In addition, the terms "first", "second", "third" and "fourth" are used for descriptive purposes only and cannot be understood as indicating or suggesting relative importance or implicitly indicating the number of technical features indicated. Therefore, the features defined as "first", "second", "third" and "fourth" may explicitly or implicitly include at least one such feature.

[0037] In the present invention, unless otherwise clearly stipulated and limited, the terms "install", "set", "connect", "fix", "screw" and the like should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or an integrated connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium; it can be the internal connection of two elements or the interaction relationship between two elements. Unless otherwise clearly defined, ordinary technicians in this field can understand the specific meanings of the above terms in the present invention according to the specific circumstances.

[0038] Although the embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and variations may be made to these embodiments without departing from the principles and spirit of the present invention, and the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. An injection mold for processing transmission parts, characterized by: include: Upper mold(12); A lower mold (1), the lower mold (1) is placed on one side of the upper mold (12), and a plurality of mold cavities are equidistantly provided in the middle of the lower mold (1); A base, the base is placed on a side of the lower mold (1) facing away from the upper mold (12), the base comprises two side support blocks (3) fixedly connected to the end of the lower mold (1), a driving plate (15) is slidably provided in the middle of the side support blocks (3), an ejection plate (4) is slidably connected in the middle of the two side support blocks (3), the driving plate (15) is fixedly connected to the ejection plate (4), and an ejector pin (5) for demoulding is fixedly connected to one side of the ejection plate (4); A hopper (10) is slidably placed on the outside of the side support block (3); an inclined screen plate (13) is provided inside the hopper (10) for screening the nozzle material.

2. The injection mold for processing transmission accessories according to claim 1, characterized in that: One side of the upper mold (12) is provided with a glue injection port and a glue injection pipe inside. Four corners of one side of the upper mold (12) are fixed with positioning columns, and one side of the lower mold (1) is provided with positioning holes corresponding to the positioning columns.

3. The injection mold for processing transmission accessories according to claim 1, characterized in that: One end of the side support block (3) facing away from the lower mold (1) is fixedly connected to a bottom plate (2), and a plurality of guide rods (6) are fixedly connected between the lower mold (1) and the bottom plate (2).

4. The injection mold for processing transmission parts according to claim 1, characterized in that: The ejection plate (4) is slidably mounted on the outside of the guide rod (6), and a No. 1 spring (7) is sleeved on the outside of the guide rod (6) and located between the lower mold (1) and the ejection plate (4).

5. The injection mold for processing transmission parts according to claim 1, characterized in that: The ejector pin (5) is slidably connected to the lower mold (1) and extends into the mold cavity of the lower mold (1).

6. The injection mold for processing transmission parts according to claim 3, characterized in that: A slide bar (8) is fixedly connected to the outer side of the bottom plate (2), and the hopper (10) is slidably mounted on the outer side of the slide bar (8), and a No. 2 spring (9) is mounted on the outer side of the slide bar (8) and at both ends of the hopper (10).

7. The injection mold for processing transmission parts according to claim 1, characterized in that: A sliding groove (14) is provided in the middle of the side support block (3), and the driving plate (15) is slidably connected to the sliding groove (14).

8. The injection mold for processing transmission parts according to claim 1, characterized in that: The bottom of the hopper (10) is detachably connected to a recovery box (11), one end of the recovery box (11) is fixedly connected to a limiting hook plate (16), and one side of the hopper (10) is fixedly connected to a limiting groove (17) that cooperates with the limiting hook plate (16).

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