A delayed angled lifter structure

Abstract

The present invention provides a delayed inclined ejection structure, including a movable template and a push plate, the push plate is below the movable template, an inclined ejector rod and a guide rod are installed on the push plate, the bottom of the guide rod is fixedly connected to the push plate, the bottom of the inclined ejector rod is slidably connected to the push plate, a slide plate is installed below the movable template, the slide plate slides left and right on the movable template, a first guide hole and a second guide hole are arranged side by side on the slide plate, the inclined ejector rod passes through the first guide hole and the movable template, the guide rod passes through the second guide hole, the inclination and direction of the first guide hole are consistent with those of the inclined ejector rod, the width of the first guide hole matches the width of the inclined ejector rod, the inclination direction of the second guide hole is opposite to the inclination direction of the first guide hole, and the width of the second guide hole is greater than the width of the guide rod. The present invention provides a delayed inclined ejection structure, through the cooperation and friction between the guide rod and the slide plate, the slide plate is driven to perform delayed displacement, thereby driving the inclined ejector rod to perform lateral demoulding, so that the operation of the inclined ejector rod is stable.

Description

Technical Field

[0001] The present invention relates to the technical field of injection molds, and specifically to a delayed lifter structure. Background Art

[0002] Injection molding is a commonly used molding method for plastic products. It is a method of injecting completely molten plastic materials into a mold cavity under high pressure and demolding to obtain a molded product after cooling and solidification. For existing injection products, due to the structural design of the products, when there are holes or ribs on the side of the product, a straight-up-and-down ejection structure cannot be used, and a lifter is required for demolding. However, for products with an arc-shaped perimeter, a large height difference and deep cavity between the two long sides, and a large shrinkage and clamping force of the product, it is necessary to first eject and then perform inclined core-pulling demolding, that is, it is necessary to delay the lifter. However, the existing delayed lifter structure is relatively complex, occupies more mold space, and is more complex to assemble, making the overall layout of the mold less compact and increasing the production cost of the mold. Summary of the Invention

[0003] The purpose of the present invention is to provide a delayed lifter structure to solve the technical problems in the background art.

[0004] To achieve the foregoing purpose, the present invention provides the following technical solutions:

[0005] A delayed lifter structure includes a moving template and a push plate. The push plate is below the moving template. An ejector pin and a guide rod are installed on the push plate. The bottom of the guide rod is fixedly connected to the push plate. The bottom of the ejector pin is slidably connected to the push plate. A slide plate is installed below the moving template. The slide plate slides left and right on the moving template. A first guide hole and a second guide hole are arranged side by side on the slide plate. The ejector pin passes through the first guide hole and the moving template. The guide rod passes through the second guide hole. The slope and direction of the first guide hole are the same as those of the ejector pin. The width of the first guide hole matches the width of the ejector pin. The slope direction of the second guide hole is opposite to the slope direction of the first guide hole. The width of the second guide hole is greater than the width of the guide rod.

[0006] The guide rod includes a support portion, a connecting portion, and a guiding portion from bottom to top. The connecting portion is obliquely arranged above the support portion. The inclination direction of the connecting portion is the same as the inclination direction and angle of the second guide hole. A first guide surface is provided on the left side of the guiding portion. The first guide surface is an inclined surface and is consistent with the end surface of the connecting portion. A second guide surface is provided on the right side of the guiding portion. The second guide surface is a planar structure. The second guide surface abuts against the inner wall of the second guide hole.

[0007] A sliding seat is installed at the bottom of the ejector pin. The sliding seat is fixedly connected to the push plate. The bottom of the ejector pin is slidably connected to the sliding seat.

[0008] The slide seat is provided with a first accommodating groove penetrating the left and right sides of the slide seat, and the front and rear sides of the first accommodating groove are respectively provided with sliding grooves. The bottom of the inclined ejector rod is installed with a guide shaft, and the guide shaft slides in the sliding groove.

[0009] A second accommodating groove is provided below the movable template for accommodating a sliding plate, and the sliding plate slides in the second accommodating groove.

[0010] A limiting boss is arranged above the inclined ejector rod, and the limiting boss is above the slide plate.

[0011] The transverse cross-sections of the inclined ejector rod, the guide rod, the first guide hole and the second guide hole are all rectangular structures.

[0012] Compared with the prior art, the present invention provides a delayed inclined lift structure, which drives the slide plate to perform delayed displacement through the cooperation and resistance between the guide rod and the slide plate, thereby driving the inclined lift rod to move sideways for demoulding. The delayed inclined lift structure makes the operation of the inclined lift rod stable, and the entire delayed inclined lift structure is simple, easy to install and the subsequent maintenance is simple and convenient. It occupies less space inside the mold, and the space utilization rate of the mold is high, which can effectively reduce the production and maintenance costs of the mold. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] Figure 1 : Schematic diagram of the structure of the present invention;

[0014] Figure 2 : Schematic diagram of the installation structure of the inclined ejector rod and the guide rod;

[0015] Figure 3 : Guide rod front view;

[0016] Figure 4 : Schematic diagram of the working principle of the present invention. DETAILED DESCRIPTION

[0017] The technical solutions in the embodiments of the present invention will be described clearly and completely below in conjunction with the accompanying drawings in the embodiments of the present invention.

[0018] Specific embodiment 1: Please refer to Figures 1 to 3 In an embodiment of the present invention, a delayed inclined ejector structure includes a movable template 1 and a push plate 2, the push plate 2 is below the movable template 1, an inclined ejector rod 3 and a guide rod 4 are installed on the push plate 2, the bottom of the guide rod 4 is fixedly connected to the push plate 2, the inclined ejector rod 3 is tilted toward the left direction, the top of the inclined ejector rod 3 is a forming portion, the bottom of the inclined ejector rod 3 is slidably connected to the push plate 2, a slide seat 5 is installed at the bottom of the inclined ejector rod 3, the slide seat 5 is fixedly connected to the push plate 2, the bottom of the inclined ejector rod 3 is slidably connected to the slide seat 5, a first accommodating groove 501 running through the left and right sides of the slide seat 5 is provided in the slide seat 5, and slide grooves 502 are respectively provided on the front and rear sides of the first accommodating groove 501, and a guide shaft 6 is installed at the bottom of the inclined ejector rod 3, and the guide shaft 6 slides in the slide groove 502.

[0019] A slide plate 7 is installed below the moving template 1. The slide plate 7 slides left and right on the moving template 1. A first guiding hole 701 and a second guiding hole 702 are arranged side by side on the slide plate 7. The inclined ejector rod 3 passes through the first guiding hole 701 and the moving template 1, and the guide rod 4 passes through the second guiding hole 702. The inclination and direction of the first guiding hole 701 are the same as those of the inclined ejector rod 3. The width of the first guiding hole 701 matches the width of the inclined ejector rod 3. The inclination direction of the second guiding hole 702 is opposite to the inclination direction of the first guiding hole 701. The width of the second guiding hole 702 is greater than the width of the guide rod 4. The transverse cross-sections of the inclined ejector rod 3, the guide rod 4, the first guiding hole 701 and the second guiding hole 702 are all rectangular structures. The setting of the rectangular structure ensures that the inclined ejector rod 3 and the guide rod 4 can avoid abnormal rotation and the like during movement, which affects the molding quality of the product and ensures the stability of the movement of the inclined ejector rod 3 and the guide rod 4.

[0020] The guide rod 4 is successively a supporting part 401, a connecting part 402 and a guiding part 403 from bottom to top. The connecting part 402 is inclined and arranged above the supporting part 401. The inclination direction of the connecting part 402 is the same as the inclination direction and angle of the second guiding hole 702. A first guiding surface 403-1 is arranged on the left side of the guiding part 403. The first guiding surface 403-1 is an inclined surface and is consistent with the end surface of the connecting part 402. A second guiding surface 403-2 is arranged on the right side of the guiding part 403. The second guiding surface 403-2 is a planar structure. At the origin position, the second guiding surface 403-2 abuts against the right end surface of the inner wall of the second guiding hole 702.

[0021] A second accommodating groove 101 is arranged below the moving template 1 for placing the slide plate 7. The slide plate 7 slides in the second accommodating groove 101.

[0022] A limiting boss 301 is arranged above the inclined ejector rod 3. The limiting boss 301 is above the slide plate 7. The setting of the limiting boss 301 positions the inclined ejector rod 3 after resetting to ensure that the position of the molding surface corresponds to the position on the moving die core.

[0023] Working principle: Please refer to Figure 4 , when the push plate 2 moves upward, it pushes the inclined ejector rod 3 and the guide rod 4 to move upward synchronously. Since the second guiding surface 403-2 of the guide rod 4 is a plane, that is, the guide rod 4 moves upward synchronously with the inclined ejector rod 3. The inclined ejector rod 3 drives the product to be ejected outward. When the first guiding surface 403-1 of the guide rod 4 abuts against the inner wall of the second guiding hole 702, the guide rod 4 pushes the slide plate 7 to move in the left direction, that is, drives the inclined ejector rod 3 to displace leftward synchronously, and performs side core-pulling demolding on the side hole of the product, completing one product ejection and side core-pulling movement.

[0024] Compared with the prior art, the present invention provides a delayed inclined lift structure, which drives the slide plate to perform delayed displacement through the cooperation and resistance between the guide rod and the slide plate, thereby driving the inclined lift rod to move sideways for demoulding. The delayed inclined lift structure makes the operation of the inclined lift rod stable, and the entire delayed inclined lift structure is simple, easy to install and the subsequent maintenance is simple and convenient. It occupies less space inside the mold, and the space utilization rate of the mold is high, which can effectively reduce the production and maintenance costs of the mold.

[0025] It will be apparent to those skilled in the art that the invention is not limited to the details of the foregoing exemplary embodiments and that the invention can be implemented in other specific forms without departing from the spirit or essential features of the invention. Therefore, the embodiments should be considered in all respects as exemplary and non-restrictive, and the scope of the invention is defined by the appended claims rather than the foregoing description, and it is intended that all variations falling within the meaning and scope of the equivalent elements of the claims be included in the invention. Any reference numeral in a claim should not be considered as limiting the claim to which it relates.

[0026] In addition, it should be understood that although the present specification is described according to implementation modes, not every implementation mode contains only one independent technical solution. This description of the specification is only for the sake of clarity. Those skilled in the art should regard the specification as a whole. The technical solutions in each embodiment may also be appropriately combined to form other implementation modes that can be understood by those skilled in the art.

Claims

1. A delayed lifter structure, characterized in that: It includes a moving template and a push plate. The push plate is located below the moving template. An inclined ejector rod and a guide rod are installed on the push plate. The bottom of the guide rod is fixedly connected to the push plate. The bottom of the inclined ejector rod is slidably connected to the push plate. A sliding plate is installed below the moving template. The sliding plate slides left and right on the moving template. A first guiding hole and a second guiding hole are arranged side by side on the sliding plate. The inclined ejector rod passes through the first guiding hole and the moving template. The guide rod passes through the second guiding hole. The slope and direction of the first guiding hole are the same as those of the inclined ejector rod. The width of the first guiding hole matches the width of the inclined ejector rod. The slope direction of the second guiding hole is opposite to the slope direction of the first guiding hole. The width of the second guiding hole is greater than the width of the guide rod. The guide rod is successively a supporting part, a connecting part and a guiding part from bottom to top. The connecting part is obliquely arranged above the supporting part. The inclined direction of the connecting part is the same as the inclined direction and angle of the second guiding hole. A first guiding surface is arranged on the left side of the guiding part. The first guiding surface is an inclined surface and is consistent with the end face of the connecting part. A second guiding surface is arranged on the right side of the guiding part. The second guiding surface is a planar structure. The second guiding surface abuts against the inner wall of the second guiding hole.

2. The delay lifter structure according to claim 1, wherein: A sliding seat is installed at the bottom of the inclined ejector rod. The sliding seat is fixedly connected to the push plate. The bottom of the inclined ejector rod is slidably connected to the sliding seat.

3. The delay lifter structure according to claim 2, wherein: A first accommodating groove penetrating the left and right sides of the sliding seat is arranged in the sliding seat. Chute grooves are respectively arranged on the front and rear sides of the first accommodating groove. A guiding shaft is installed at the bottom of the inclined ejector rod. The guiding shaft slides in the chute grooves.

4. A delayed lifter structure according to claim 1, characterized in that: A second accommodating groove is arranged below the moving template for placing the sliding plate. The sliding plate slides in the second accommodating groove.

5. The delay lifter structure according to claim 1, characterized in that: A limiting boss is arranged above the inclined ejector rod. The limiting boss is above the sliding plate.

6. The delayed lifter structure according to claim 1, characterized in that: The transverse cross-sections of the inclined ejector rod, the guide rod, the first guiding hole and the second guiding hole are all rectangular structures.

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