A front mold ejection structure of an injection mold

Abstract

The utility model relates to a kind of injection mold front mould ejection structure, including front injection end plate, flow channel plate is fixed in front injection end plate rear side, four side edges of flow channel plate rear side are fixed with front mould by front interval seat, four front interval seat inside is equipped with front ejector pin plate, front ejector pin plate is installed with several front ejector pins;It also includes rear opening and closing end plate, four side edges of rear opening and closing end plate front side are fixed with rear mould by several rear interval seat, four rear interval seat inside is equipped with rear ejector pin plate, rear ejector pin plate is installed with several rear ejector pins, two jacking air cylinders are fixedly installed in the opposite two side surfaces of rear mould, jacking air cylinder is fixedly connected with rear ejector pin plate;Two buckle base cooperation components are fixed on the opposite two side surfaces of flow channel plate, two buckle base connecting piece components are fixed on the opposite two side surfaces of rear mould, buckle base connecting piece component is used in cooperation with buckle base cooperation component and buckle base connecting piece component is elastically hooked with front ejector pin plate and is installed.The utility model is easy to demould, reduce the probability of product tensile injury or deformation.

Description

Technical Field

[0001] This utility model relates to the technical field of mold ejection, and in particular to a front mold ejection structure for injection molds. Background Technology

[0002] In traditional injection molds, the ejection mechanism is usually located on the moving mold side of the rear mold, and the ejector plate drives the ejector pins to eject the product. However, for deep-cavity parts, thin-walled parts, or plastic parts with undercuts in the front mold, ejection from only the rear mold can easily lead to problems such as difficulty in demolding, sticking to the front mold, product tearing, or deformation. Utility Model Content

[0003] This utility model aims to address the shortcomings of existing technologies by providing a front mold ejection structure for injection molds.

[0004] To achieve the above objectives, this utility model adopts the following technical solution:

[0005] A front mold ejection structure for an injection mold includes a front injection end plate, a runner plate fixed to the rear side of the front injection end plate, a front mold fixed to the four sides of the rear side of the runner plate via front spacers, and a movable front ejector plate provided inside the four front spacers, with a plurality of front ejector pins installed on the front ejector plate.

[0006] It also includes a rear opening end plate. The rear mold is fixed to the four sides of the front side of the rear opening end plate through several rear spacers. The four rear spacers are equipped with movable rear ejector plates. Several rear ejector pins are installed on the rear ejector plates. Two lifting cylinders are fixedly installed on the two opposite sides of the rear mold. The piston rod of the lifting cylinder is fixedly connected to the rear ejector plate through a connector.

[0007] Two snap-fit ​​components are fixed on opposite sides of the flow channel plate, and two snap-fit ​​connector components are fixed on opposite sides of the rear mold. The snap-fit ​​connector components are used in conjunction with the snap-fit ​​components, and the snap-fit ​​connector components are elastically hooked and installed with the front ejector plate.

[0008] The fastening assembly includes a fixing seat fixed on the side of the flow channel plate, a mating plate on the fixing seat, an adjusting seat on the mating plate, and adjusting inclined surfaces on both sides of the outer end face of the adjusting seat.

[0009] The fastener connector assembly includes a fixing plate fixed to the side of the rear mold, two ear plates on the fixing plate, a fastener base plate hinged between the two ear plates, an arc-shaped elastic pressure plate fixed to the outside of the two ear plates, the arc-shaped elastic pressure plate pressing on the fastener base plate, a hook plate fixed to the other end of the fastener base plate, the hook plate hooking onto the front ejector plate, an adjusting slide rod installed on the hook plate, the adjusting slide rod cooperating with the adjusting slope of the adjusting seat.

[0010] The front ejector plate has a groove at the position where it connects to the hook plate, and a docking hook seat is fixed in the groove by a countersunk bolt.

[0011] The hook plate end has a reset guide slope on the side facing the front ejector plate, and the front ejector plate has a reset mating slope corresponding to the reset guide slope.

[0012] The beneficial effects of this utility model are: by adding a front ejector plate to the front mold, the front ejector plate moves together with the mold opening process through the fastener assembly and the fastener connector assembly. The front ejector ensures that the parts will not be pulled up by the force of the front mold, making demolding easy and reducing the probability of product damage or deformation. Attached Figure Description

[0013] Figure 1 This is a schematic diagram of the structure of this utility model;

[0014] Figure 2 This is a schematic diagram of the front ejector plate, the fastener assembly, and the fastener connector assembly;

[0015] Figure 3 for Figure 2 A schematic diagram of one set of fastener fitting components and fastener connector components is omitted;

[0016] Figure 4 This is a schematic diagram of the fastener assembly and fastener connector assembly;

[0017] Figure 5 This is a schematic diagram of the rear ejector plate;

[0018] In the diagram: 1-Front injection end plate; 2-Runner plate; 3-Front spacer; 4-Front mold; 5-Front ejector plate; 6-Front ejector pin; 7-Rear opening and closing end plate; 8-Rear spacer; 9-Rear mold; 10-Rear ejector plate; 11-Rear ejector pin; 12-Lifting cylinder; 13-Piston rod; 14-Connector; 15-Snap-fit ​​assembly; 16-Snap-fit ​​connector assembly;

[0019] 501 - Docking hook; 502 - Reset mating bevel;

[0020] 1501-Fixed base; 1502-Matching plate; 1503-Adjusting base; 1504-Adjusting ramp; 1505-Fixed groove;

[0021] 1601-Fixing plate; 1602-Ear plate; 1603-Snap plate; 1604-Arc-shaped elastic pressure plate; 1605-Hook plate; 1606-Adjusting slide rod; 1607-Reset guide slope;

[0022] The following will describe in detail the embodiments of this utility model with reference to the accompanying drawings. Detailed Implementation

[0023] The principles and features of this utility model are described below with reference to the accompanying drawings. The embodiments described are for illustrative purposes only and are not intended to limit the scope of this utility model. The utility model is described more specifically in the following paragraphs by way of example with reference to the accompanying drawings. The advantages and features of this utility model will become clearer from the following description. It should be noted that the drawings are all in a very simplified form and use non-precise proportions, and are only used to facilitate and clarify the illustration of the embodiments of this utility model.

[0024] It should be noted that when a component is described as "fixed to" another component, it can be directly on the other component or may have a component in between. When a component is considered "connected to" another component, it can be directly connected to the other component or may have a component in between. When a component is considered "set on" another component, it can be directly set on the other component or may have a component in between. The terms "vertical," "horizontal," "left," "right," and similar expressions used in this document are for illustrative purposes only.

[0025] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention pertains. The terminology used herein is for the purpose of describing particular embodiments only and is not intended to be limiting of the invention. The term "and / or" as used herein includes any and all combinations of one or more of the associated listed items.

[0026] The present invention will be further described below with reference to the accompanying drawings and embodiments:

[0027] like Figures 1 to 5 As shown, a front mold ejection structure for an injection mold includes a front injection end plate 1, a runner plate 2, a front spacer 3, a front mold 4, a front ejector plate 5, a front ejector pin 6, a rear opening end plate 7, a rear spacer 8, a rear mold 9, a rear ejector plate 10, a rear ejector pin 11, a lifting cylinder 12, a piston rod 13, a connector 14, a base fitting assembly 15, and a base connecting assembly 16.

[0028] A flow channel plate 2 is fixed to the rear side of the front injection end plate 1. The front mold 4 is fixed to the four sides of the rear side of the flow channel plate 2 through the front spacer 3. The four front spacers 3 are equipped with movable front ejector plates 5. Several front ejector pins 6 are installed on the front ejector plates 5.

[0029] It also includes a rear opening and closing end plate 7. The rear mold 9 is fixed to the four front sides of the rear opening and closing end plate 7 through a number of rear spacers 8. The four rear spacers 8 are equipped with movable rear ejector plates 10. A number of rear ejector pins 11 are installed on the rear ejector plates 10. Two lifting cylinders 12 are fixedly installed on the two opposite sides of the rear mold 9. The piston rod 13 of the lifting cylinder 12 is fixedly connected to the rear ejector plate 10 through a connector 14.

[0030] Two snap-fit ​​components 15 are fixed on opposite sides of the flow channel plate 2, and two snap-fit ​​connector components 16 are fixed on opposite sides of the rear mold 9. The snap-fit ​​connector components 16 are used in conjunction with the snap-fit ​​components 15 and are elastically hooked and installed with the front ejector plate 5.

[0031] Both the front ejector plate 5 and the rear ejector plate 10 are I-shaped structures.

[0032] The fastening assembly 15 includes a fixing seat 1501 fixed on the side of the flow channel plate 2, a mating plate 1502 provided on the fixing seat 1501, an adjusting seat 1503 installed on the mating plate 1502, and adjusting inclined surfaces 1504 provided on both sides of the outer end face of the adjusting seat 1503.

[0033] A fixing groove 1505 is provided on the mating plate 1502, and the adjusting seat 1503 is installed in the fixing groove 1505 by countersunk bolts.

[0034] The fastener connector assembly 16 includes a fixing plate 1601 fixed on the side of the rear mold 9. The fixing plate 1601 is provided with two ear plates 1602. A fastener base plate 1603 is hinged between the two ear plates 1602. An arc-shaped elastic pressure plate 1604 is fixed on the outside of the two ear plates 1602. The arc-shaped elastic pressure plate 1604 presses on the fastener base plate 1603. A hook plate 1605 is fixed at the other end of the fastener base plate 1603. The hook plate 1605 is hooked on the front ejector plate 5. An adjusting slide rod 1606 is installed on the hook plate 1605. The adjusting slide rod 1606 is configured to cooperate with the adjusting inclined surface 1504 of the adjusting seat 1503.

[0035] The front ejector plate 5 has a groove at the position where it connects with the hook plate 1605, and a docking hook seat 501 is fixed in the groove by a countersunk bolt.

[0036] The hook plate 1605 has a reset guide slope 1607 on the side facing the front ejector plate 5, and the front ejector plate 5 has a reset mating slope 502 corresponding to the reset guide slope 1607.

[0037] The working principle of this utility model is as follows:

[0038] During mold opening, the rear mold 9 (i.e., the moving mold) moves backward under the drive of the mold opening mechanism. At the same time, the fastener assembly 16, which is fixed to the rear mold, also moves backward synchronously. The hook plate 1605 engages with the docking hook seat 501 of the front ejector plate 5, causing the front ejector plate 5 to move backward. The front ejector pin 6 on the front ejector plate 5 holds the product injected into the cavity of the front mold 4 and the rear mold 9, causing it to detach from the front mold 4. When the adjusting slide rod 1606 on the hook plate 1605 contacts the adjusting slope 1504 of the adjusting seat 1503, it is subjected to the adjusting slope. The function of 1504 is to allow the adjusting seat 1503 and the fastening base plate 1603 to rotate outward between the two ear plates 1602, thereby causing the hook plate 1605 to disengage from the docking hook seat 501 and the front ejector plate 5 to disengage from the fastening base connecting component assembly 16. Under the action of the arc-shaped elastic pressure plate 1604, the adjusting seat 1503 and the fastening base plate 1603 are reset, the rear mold 9 continues to retreat a certain distance, the lifting cylinder 12 starts to act, driving the rear ejector plate 10 to move, and the rear ejector 11 ejects the product, which is then removed by a robot or other components. During mold closing, the side of the hook plate 1605 facing the front ejector plate 5 is provided with a reset guide slope 1607, and the front ejector plate 5 is provided with a reset mating slope 502 corresponding to the reset guide slope 1607. Through the cooperation of the two slopes, the hook plate 1605 is better hooked onto the docking hook seat 501.

[0039] This invention adds a front ejector plate 5 to the front mold 4. During the mold opening process, the front ejector plate 5 moves together with the mold opening through the fastener assembly 15 and the fastener connector assembly 16. The front ejector 6 ensures that the parts will not be pulled up by the force of the front mold 4, making demolding easy and reducing the probability of product damage or deformation.

[0040] The present invention has been described above with reference to the accompanying drawings. Obviously, the specific implementation of the present invention is not limited to the above-described manner. Any improvements made using the inventive concept and technical solution of the present invention, or direct application to other situations without modification, are all within the protection scope of the present invention.

Claims

1. A front mold ejection structure for an injection mold, characterized in that, It includes a front injection end plate (1), a runner plate (2) is fixed to the rear side of the front injection end plate (1), and a front mold (4) is fixed to the four sides of the rear side of the runner plate (2) through the front spacer (3). The four front spacers (3) are equipped with movable front ejector plates (5), and a number of front ejector pins (6) are installed on the front ejector plates (5). It also includes a rear opening end plate (7), the four sides of the front side of the rear opening end plate (7) are fixed with a rear mold (9) through a number of rear spacers (8), the four rear spacers (8) are provided with a movable rear ejector plate (10), a number of rear ejector pins (11) are installed on the rear ejector plate (10), and two lifting cylinders (12) are fixedly installed on the two opposite sides of the rear mold (9), and the piston rod (13) of the lifting cylinder (12) is fixedly connected to the rear ejector plate (10) through a connector (14); Two snap-fit ​​components (15) are fixed on opposite sides of the flow channel plate (2), and two snap-fit ​​connector components (16) are fixed on opposite sides of the rear mold (9). The snap-fit ​​connector components (16) are used in conjunction with the snap-fit ​​components (15), and the snap-fit ​​connector components (16) are elastically hooked and installed with the front ejector plate (5).

2. The ejection structure of the front mold of an injection mold according to claim 1, characterized in that, The fastener assembly (15) includes a fixing seat (1501) fixed on the side of the flow channel plate (2), a mating plate (1502) is provided on the fixing seat (1501), an adjusting seat (1503) is installed on the mating plate (1502), and adjusting inclined surfaces (1504) are provided on both sides of the outer end face of the adjusting seat (1503).

3. The ejection structure of the front mold of an injection mold according to claim 2, characterized in that, A fixing groove (1505) is provided on the mating plate (1502), and the adjusting seat (1503) is installed in the fixing groove (1505) by countersunk bolts.

4. The ejection structure of the front mold of an injection mold according to claim 3, characterized in that, The fastener connector assembly (16) includes a fixing plate (1601) fixed on the side of the rear mold (9). The fixing plate (1601) is provided with two ear plates (1602). A fastener base plate (1603) is hinged between the two ear plates (1602). An arc-shaped elastic pressure plate (1604) is fixed on the outside of the two ear plates (1602). The arc-shaped elastic pressure plate (1604) presses on the fastener base plate (1603). A hook plate (1605) is fixed at the other end of the fastener base plate (1603). The hook plate (1605) is hooked on the front ejector plate (5). An adjusting slide rod (1606) is installed on the hook plate (1605). The adjusting slide rod (1606) is configured to cooperate with the adjusting slope (1504) of the adjusting seat (1503).

5. The ejection structure of the front mold of an injection mold according to claim 4, characterized in that, The front ejector plate (5) has a groove at the position where it connects with the hook plate (1605), and a docking hook seat (501) is fixed in the groove by a countersunk bolt.

6. The ejection structure of the front mold of an injection mold according to claim 5, characterized in that, The hook plate (1605) has a reset guide slope (1607) on the side facing the front ejector plate (5), and the front ejector plate (5) has a reset mating slope (502) corresponding to the reset guide slope (1607).

7. The ejection structure of the front mold of an injection mold according to claim 6, characterized in that, Both the front ejector plate (5) and the rear ejector plate (10) are I-shaped structures.

Images