A top pipe structure added in a slider of an injection mold

Abstract

The utility model provides a kind of for injection mold's slider middle adds top pipe structure, comprising:A plate, B plate, rear mould kernel, lateral slider, forming slider, stop block, pressing plate, top pipe, needle, spring and inclined guide pillar, A plate is equipped with guide slope, and limit vertical surface is opened at guide slope, lateral slider includes slide seat part and side slide part, slide seat part is slidably fixed in B plate, one end of side slide part is located in guide slope, the other end is connected in forming slider, and connecting place is equipped with avoid hole, pressing plate is movably arranged in avoid hole, one end of stop block is fixed in pressing plate, the other end passes through side slide part and leans on limit vertical surface, one end of top pipe is fixed in pressing plate, the other end passes through forming slider, one end of needle is fixed in the fixed hole in side slide part by headless screw, the other end slidably passes through side slide part, pressing plate and top pipe, one end of spring is inserted in forming slider, the other end is set on pressing plate, and inclined guide pillar is slidably inclined and is arranged in slide seat part.

Description

Technical Field

[0001] This utility model belongs to the field of complex mold technology, and in particular relates to a structure with an ejector tube in the slider of an injection mold. Background Technology

[0002] like Figure 1 As shown, a common injection mold generally includes a front mold 80 and a rear mold 90. The front mold 80 includes a front mold fixing plate 81, an A plate 82, and a front mold core 83. The front mold fixing plate 81 and the A plate 82 are fixedly connected. The front mold core 83 is embedded and fixed on the A plate 82 on the side away from the front mold fixing plate 81. The rear mold 90 includes a B plate 91 and a rear mold core 92. The rear mold core 92 is embedded on the B plate 91 on the side close to the A plate 82. When the product is injected, the B plate 91 gradually moves away from the A plate 82 to complete the mold opening. Finally, the product left on the rear mold 90 is ejected to complete the demolding and obtain the molded part.

[0003] like Figure 2 and Figure 3 As shown, when the side slide of the injection molded product 101 has a deep column hole 102 that needs to be pulled, if the side core pulling is performed directly, the column hole of the injection molded product is easily damaged or deformed. Therefore, how to achieve stable core pulling of the injection molded product with column hole in the side slide has become a problem that needs to be solved. Utility Model Content

[0004] To address the aforementioned technical problems, this utility model provides a slide block structure with an ejector tube for injection molds, which solves the problem of how to achieve stable core pulling of injection molded products with deep holes in the lateral slide position.

[0005] To achieve the above objectives, the present invention adopts the following technical solution: A slide block with an ejector tube structure for injection molds is used for pre-pulling deep holes of injection molded products in a second direction before mold opening in a first direction. The second direction is perpendicular to the first direction. The slide block with an ejector tube structure includes: an A plate, a B plate, a rear mold core, a side slide block, a forming slide block, a stop block, a pressure plate, an ejector tube, an ejector pin, a spring, and an inclined guide post. The A plate has a guide slope inclined in the third direction, and a limiting vertical surface and a limiting slope are provided at the guide slope. The rear mold core is disposed in the B plate. The side slide block includes a sliding base part and a side sliding part. The sliding base part is slidably fixed on the side of the B plate near the A plate in the second direction. One end of the side sliding part rests against the guide slope. The forming slide block is fixedly connected to the other end of the side sliding part in the second direction. A clearance hole is provided at the connection between the forming slide block and the side sliding part. The pressure plate is movable at a first distance in the second direction and is disposed in the clearance hole. Inside the positioning hole, one end of the stop block is fixed inside the pressure plate, and the other end of the stop block passes through the side sliding part along the second direction. When performing deep hole pre-pulling of the deep hole of the column position, the other end of the stop block is perpendicular to the limiting vertical surface along the second direction. One end of the ejector tube is fixed inside the pressure plate, and the other end of the ejector tube passes through the forming slider along the second direction. A fixing hole extending along the second direction is opened in the side sliding part. One end of the ejector pin is detachably pressed and fixed in the fixing hole by a headless screw. The other end of the ejector pin can slide through the side sliding part, the pressure plate and the ejector tube along the second direction to cooperate with the ejector tube, the forming slider and the rear mold core to form the column position deep hole of the injection molded product. One end of the spring is inserted into the forming slider, and the other end of the spring is pushed against the pressure plate along the second direction. One end of the inclined guide post is fixed on the side of the A plate away from the B plate, and the other end of the inclined guide post can slide obliquely through the slide part along the third direction.

[0006] Optionally, the pressure plate includes a first pressure plate and a second pressure plate. The first pressure plate is fixedly connected to the second pressure plate along a second direction. One end of the jacking pipe is embedded in the first pressure plate, and the end face of one end of the jacking pipe rests on the second pressure plate. One end of the stop block is embedded in the second pressure plate, and the end face of one end of the stop block rests on the second pressure plate.

[0007] Preferably, the first pressure plate is detachably fixed to the second pressure plate along the second direction.

[0008] Optionally, a gap is left between the two sides of the pressure plate in the vertical first direction and the clearance hole.

[0009] Optionally, the maximum distance between the limiting vertical surface and the guide slope along the first direction is the second distance, which is less than the first distance.

[0010] Optionally, the other end of the stop includes an inclined stop surface and a straight stop surface vertically arranged along the first direction. The inclined stop surface fits perfectly against the limiting inclined surface when the mold is closed, and the straight stop surface fits perfectly against the limiting vertical surface when the mold is closed.

[0011] Optionally, the jacking pipe and the stop block are staggered within the pressure plate and do not contact each other.

[0012] Optionally, the outer contour of one end face of the jacking pipe is D-shaped.

[0013] Optionally, the forming slider is detachably fixed to the other end of the side slide along the second direction.

[0014] Optionally, the ejector tube structure in the slider of the injection mold also includes a front mold fixing plate, and one end of the inclined guide post is pressed and fixed on the side of plate A away from plate B by the front mold fixing plate.

[0015] Compared with the prior art, the slide block with top tube structure provided by this utility model for injection molds is simple in structure, ingenious in design, and has a good core pulling effect. It can effectively realize stable core pulling of injection molded products with deep holes in the lateral slide, greatly improving the quality and production efficiency of injection molded products. Attached Figure Description

[0016] To more clearly illustrate the specific embodiments of this utility model or the technical solutions in the prior art, the drawings used in the description of the specific embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are some embodiments of this utility model. For those skilled in the art, other drawings can be obtained from these drawings without creative effort.

[0017] Figure 1 This is a schematic diagram of a commonly used injection mold.

[0018] Figure 2 This is a schematic diagram of the structure of a slider with an ejector tube added to an injection mold according to an embodiment of the present invention during mold closing.

[0019] Figure 3 This is a schematic diagram of the structure of a slider for injection mold with an added ejector tube structure to complete the deep hole pre-pulling of the column position deep hole according to an embodiment of the present invention. Detailed Implementation

[0020] To provide a better understanding of the purpose, structure, features, and functions of this utility model, detailed descriptions are provided below with reference to specific embodiments.

[0021] In the description of this utility model, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model.

[0022] Please refer to the reference. Figure 2 and Figure 3 As shown, this utility model provides a slider with an ejector tube structure 100 for injection molds. This structure is used for pre-pulling the deep hole 102 of the injection molded product 101 in the second direction Y when the mold is opened along the first direction X. This is a two-stage core pulling process: the first stage involves pre-pulling the deep hole by holding the column against it; the second stage involves the complete core pulling of the deep hole 102 to prevent damage or deformation of the deep hole 102. The second direction Y is perpendicular to the first direction X. The slider with ejector tube structure 100 includes: an A plate 1, a B plate 2, a rear mold core 20, a side slider 3, a forming slider 4, a stop block 5, a pressure plate 6, an ejector tube 7, an ejector pin 8, a spring 9, and an inclined guide post 10.

[0023] Plate A1 has a guide slope 11 inclined along a third direction W, and a limiting vertical surface 12 and a limiting slope 13 are formed at the guide slope 11. The limiting vertical surface 13 has a first height H along the first direction X.

[0024] The rear mold core 20 is set inside plate B 2.

[0025] The lateral slider 3 includes a slide block 31 and a side slide block 32. The slide block 31 is slidably fixed on the side of the B plate 2 near the A plate 1 along the second direction Y. One end of the side slide block 32 rests against the guide slope 11.

[0026] The forming slider 4 is fixedly connected to the other end of the side sliding part 32 along the second direction Y, and a clearance hole 34 is provided at the connection between the forming slider 4 and the side sliding part 32.

[0027] The pressure plate 6 can be moved along the second direction Y and is set within the clearance hole 34 at a distance S.

[0028] One end of the stop block 5 is fixed inside the pressure plate 6, and the other end of the stop block 5 passes through the side sliding part 32 along the second direction Y. When the deep hole pre-pulling of the column deep hole 102 is performed, the other end of the stop block 5 is perpendicular to the limiting vertical surface 12 along the second direction Y.

[0029] One end of the jacking tube 7 is fixed inside the pressure plate 6, and the other end of the jacking tube 7 passes through the forming slider 4 along the second direction Y.

[0030] The side sliding part 32 has a fixing hole 321 extending along the second direction Y. One end of the ejector pin 8 is detachably pressed and fixed in the fixing hole 321 by a headless screw 322. The headless screw 322 is added in the fixing hole 321 to facilitate the fixing and disassembly of the ejector pin 8. The other end of the ejector pin 8 slides through the side sliding part 32, the pressure plate 6 and the ejector tube 7 along the second direction Y, and is used to cooperate with the ejector tube 7, the molding slide block 4 and the rear mold core 20 to form the deep hole 102 of the injection molded product 101.

[0031] One end of the spring 9 is inserted into the forming slider 4, and the other end of the spring 9 is placed on the pressure plate 6 along the second direction Y.

[0032] One end of the inclined guide post 10 is fixed on the side of plate A 1 away from plate B 2, and the other end of the inclined guide post 10 is slidably inclined along the third direction W through the slide seat 31.

[0033] Optionally, the pressure plate 6 includes a first pressure plate 61 and a second pressure plate 62. The first pressure plate 61 is fixedly connected to the second pressure plate 62 along the second direction Y. One end of the jacking pipe 7 is embedded in the first pressure plate 61, and the end face of one end of the jacking pipe 7 rests on the second pressure plate 62. One end of the stop block 5 is embedded in the second pressure plate 62, and the end face of one end of the stop block 5 rests on the second pressure plate 62. This facilitates the fixing of the jacking pipe 7 and the stop block 5 within the pressure plate 6.

[0034] Preferably, the first pressure plate 61 is detachably fixed to the second pressure plate 62 along the second direction Y. This facilitates the disassembly and maintenance of the jacking pipe 7 and the stop block 5 within the pressure plate 6.

[0035] Optionally, a gap is left between the two sides of the pressure plate 6 perpendicular to the first direction X and the clearance hole 34. This can greatly reduce the contact surface between the pressure plate 6 and the side slider 3 and the forming slider 4, and facilitate the smooth movement of the pressure plate 6 along the second direction Y.

[0036] Optionally, the maximum distance between the limiting vertical surface 12 and the guide inclined surface 11 along the first direction X is the second distance L, which is less than the first distance S. This provides sufficient space within the clearance hole 34 to prevent the pressure plate 6 and the stop block 5 from being damaged.

[0037] Optionally, the other end of the stop block 5 includes an inclined stop surface 51 and a straight stop surface 52 vertically arranged along the first direction X. The inclined stop surface 51 fits perfectly against the limiting inclined surface 13 when the mold is closed, and the straight stop surface 52 fits perfectly against the limiting vertical surface 12 when the mold is closed. This facilitates the fit between the stop block 5 and plate A 1, and allows for better mold closing and resetting.

[0038] Optionally, the jacking pipe 7 and the stop block 5 are staggered within the pressure plate 6 to prevent them from contacting each other. This layout is reasonable and facilitates their movement without interference.

[0039] Optionally, the outer contour of one end face of the ejector tube 7 is D-shaped. This prevents the ejector tube 7 from rotating and avoids affecting the quality of the injection molded product 101.

[0040] Optionally, the forming slider 4 is detachably fixed to the other end of the side sliding part 32 along the second direction Y. This facilitates the disassembly and maintenance of the pressure plate 6, the stop block 5, and the top tube 7.

[0041] Optionally, the ejector structure 100 in the slider of the injection mold also includes a front mold fixing plate 14, and one end of the inclined guide post 10 is pressed and fixed on the side of plate A 1 away from plate B 2 by the front mold fixing plate 14. This facilitates the fixing of the inclined guide post 10 in plate A 1.

[0042] The operating principle of the ejector tube structure 100 in the slider of the injection mold of this utility model is as follows: When the mold opens, plate B2 begins to move away from plate A1 along the first direction X, causing the lateral slider 3 and molding slider 4 on plate B2 to slide along the third direction W under the limiting action of the inclined guide post 10. At this time, since the stop block 5 is placed against the limiting vertical surface 12, the stop block 5 remains relatively stationary in the second direction Y under the limiting action of the limiting vertical surface 12. At the same time, under the limiting action of the stop block 5, the pressure plate 6 and the ejector tube 7 fixed in the pressure plate 6 also remain relatively stationary in the second direction Y. Thus, the column position of the injection molded product 101 also remains relatively stationary in the second direction Y under the action of the ejector tube 7. However, at this time, the ejector pin in the ejector tube 7... Driven by the lateral slider 3, the first stage of deep hole pre-pulling of the column deep hole 102 begins along the second direction Y. During this period, the clearance hole 34 is displaced relative to the pressure plate 6 along the second direction Y, gradually pressing the spring 9 into the lateral slider 3. When the stop block 5 moves a first height H along the first direction X and begins to leave the limiting vertical surface 12, the first stage of deep hole pre-pulling of the column deep hole 102 is completed. At this time, the stop block 5 also begins to move synchronously with the lateral slider 32 in the second direction Y. At the same time, the top tube 7 and the ejector pin 8 also begin to move synchronously. The second stage of overall core pulling of the column deep hole 102 begins until the core pulling is completed.

[0043] The present invention provides a slider with an added ejector tube structure for injection molds. The structure is simple, the design is ingenious, and the core-pulling effect is good. It can effectively realize stable core pulling of injection molded products with deep holes in the lateral slide, which greatly improves the quality of injection molded products and production efficiency.

[0044] This utility model has been described by the above-described embodiments; however, these embodiments are merely examples for implementing this utility model. It must be noted that the disclosed embodiments do not limit the scope of this utility model. Conversely, any modifications and refinements made without departing from the spirit and scope of this utility model are within the scope of patent protection of this utility model.

Claims

1. A slide block with an ejector tube structure for injection molds, used for pre-pulling the core of the deep hole of the injection molded product in a second direction before mold opening in a first direction, wherein the second direction is perpendicular to the first direction, characterized in that, The slide block with an ejector tube structure includes: A plate, B plate, rear mold core, side slide block, forming slide block, stop block, pressure plate, ejector tube, ejector pin, spring, and inclined guide post; The A plate is provided with a guide slope inclined in a third direction, and a limit vertical surface and a limit slope are provided at the guide slope; The rear mold core is located inside the B plate; The lateral slider includes a sliding base and a side sliding portion. The sliding base is slidably fixed on the side of the B plate near the A plate along the second direction, and one end of the side sliding portion rests against the guide slope. The molding slider is fixedly connected to the other end of the side sliding part along the second direction, and a clearance hole is provided at the connection between the molding slider and the side sliding part; The pressure plate is movable along the second direction by a first distance within the clearance hole; One end of the stop block is fixed inside the pressure plate, and the other end of the stop block passes through the side sliding part along the second direction. When performing deep hole pre-pulling of the column deep hole, the other end of the stop block abuts against the limiting vertical surface along the second direction. One end of the jacking tube is fixed inside the pressure plate, and the other end of the jacking tube passes through the forming slider along the second direction; The side slide portion has a fixing hole extending along the second direction. One end of the ejector pin is detachably pressed and fixed in the fixing hole by a headless screw. The other end of the ejector pin slides through the side slide portion, the pressure plate and the ejector tube along the second direction to cooperate with the ejector tube, the molding slider and the rear mold core to form a deep hole in the injection molded product. One end of the spring is inserted into the forming slider, and the other end of the spring is pressed against the pressure plate along the second direction. One end of the inclined guide post is fixed to the side of plate A away from plate B, and the other end of the inclined guide post is slidably inserted into the slide seat along the third direction.

2. The ejector tube structure in the slider of an injection mold as described in claim 1, characterized in that, The pressure plate includes a first pressure plate and a second pressure plate. The first pressure plate is fixedly connected to the second pressure plate along the second direction. One end of the jacking pipe is embedded in the first pressure plate, and the end face of one end of the jacking pipe rests on the second pressure plate. One end of the stop block is embedded in the second pressure plate, and the end face of one end of the stop block rests on the second pressure plate.

3. The ejector tube structure in the slider of an injection mold as described in claim 2, characterized in that, The first pressure plate is detachably fixed to the second pressure plate along the second direction.

4. The ejector tube structure in the slider of an injection mold as described in claim 1, characterized in that, There is a gap between the two sides of the pressure plate perpendicular to the first direction and the clearance hole.

5. The ejector tube structure in the slider of an injection mold as described in claim 1, characterized in that, The maximum distance between the limiting vertical surface and the guide slope along the first direction is the second distance, which is less than the first distance.

6. The ejector tube structure in the slider of an injection mold as described in claim 1, characterized in that, The other end of the stop includes an inclined stop surface and a straight stop surface vertically arranged along the first direction. The inclined stop surface fits perfectly against the limiting inclined surface when the mold is closed, and the straight stop surface fits perfectly against the limiting vertical surface when the mold is closed.

7. The ejector tube structure in the slider of an injection mold as described in claim 1, characterized in that, The jacking pipe and the stop block are offset within the pressure plate and do not contact each other.

8. The ejector tube structure in the slider of an injection mold as described in claim 1, characterized in that, The outer contour of one end face of the jacking pipe is D-shaped.

9. The ejector tube structure in the slider of an injection mold as described in claim 1, characterized in that, The molding slider is detachably fixed to the other end of the side slide along the second direction.

10. The ejector tube structure in the slider of an injection mold as described in claim 1, characterized in that, It also includes a front mold fixing plate, one end of which is pressed and fixed on the side of plate A away from plate B by the front mold fixing plate.

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