CN210880708U

CN210880708U - Inverted ejector pin device of die

Info

Publication number: CN210880708U
Application number: CN201921675965.5U
Authority: CN
Inventors: 陈晓平
Original assignee: Bahai Precision Molding Suzhou Co ltd
Current assignee: Bahai Precision Molding Suzhou Co ltd
Priority date: 2019-10-08
Filing date: 2019-10-08
Publication date: 2020-06-30
Anticipated expiration: 2029-10-08

Abstract

The utility model discloses an inversion thimble device of mould relates to injection mold technical field, when aiming at solving the drawing of patterns ejecting, and runner and product are ejecting together, make the problem of product and runner separation by artifical secondary operation again. The technical scheme is characterized by comprising an upper push plate, a lower push plate, a flow channel thimble and a delay thimble; the time-delay thimble comprises a product thimble and an inverted thimble, and the inverted thimble consists of an inverted thimble rod and an inverted thimble hanging table; a step hole is formed in the lower push plate and comprises a first accommodating groove and a second accommodating groove, and the distance between the inner bottom wall of the first accommodating groove and the top surface of the lower push plate is greater than the axial length of the inverted thimble hanging table. When the upper and lower push plates advance, the flow channel thimble advances to eject the flow channel, so that the sprue and the product are separated in advance; and after the ejection action is continuously carried out until the inner bottom wall of the first accommodating groove is abutted to the bottom surface of the inverted thimble hanging table, the product thimble is driven by the push plate to eject the product, so that the aim of automatically separating the flow channel in the mould from the product is fulfilled.

Description

Inverted ejector pin device of die

Technical Field

The utility model belongs to the technical field of injection mold's technique and specifically relates to an inversion thimble device of mould is related to.

Background

The gating system of the injection mold generally includes a main runner, a sub-runner and a plurality of gates, the gates are communicated with the cavities of the injection mold, and the molten material enters the main runner from a nozzle of the injection molding machine, is distributed through the sub-runner, and then enters each cavity of the mold through each gate. In an injection mold, a mold ejector pin is generally used, and the mold ejector pin moves up and down to eject a molded product in the mold.

Referring to fig. 1, a conventional mold thimble includes a cylindrical thimble rod 1 and a thimble suspension base 11 integrally formed with the thimble rod 1, where the thimble suspension base 11 is cylindrical. The thimble suspension table 11 is located at one end of the thimble rod 1, and the outer diameter of the thimble suspension table 11 is larger than that of the thimble rod 1. The mould thimble is arranged in the corresponding mounting hole of the mould.

Referring to fig. 2, in an injection-molded product 2, when the molded product 2 needs to be ejected, an ejector pin rod 1 of a mold ejector pin protrudes from a mounting hole, so that the molded product 2 is ejected.

The above prior art solutions have the following drawbacks: when the conventional side gate injection mold is used for demolding and ejecting the molded product 2, the runner 3 and the molded product 2 are ejected together, and then secondary processing is carried out manually, so that the molded product 2 and the runner 3 are separated, the processing steps are relatively complex, and in addition, the secondary processing is carried out manually, so that the product is not good due to manual operation problems, and further improvement is needed.

SUMMERY OF THE UTILITY MODEL

The utility model aims at providing an inversion thimble device of mould, it has the effect that realizes runner and product autosegregation in the mould of side runner injection mould.

The above technical purpose of the present invention can be achieved by the following technical solutions:

an inverted thimble device of a die comprises an upper push plate and a lower push plate which are parallel to each other, a runner thimble arranged in the upper push plate and used for ejecting a runner, and a delay thimble arranged in the upper push plate and the lower push plate and used for ejecting a formed product, wherein the delay thimble is parallel to the runner thimble; the time-delay thimble comprises a product thimble arranged in the upper push plate and an inverted thimble arranged in the lower push plate and abutted against the product thimble, and the inverted thimble comprises a cylindrical inverted thimble rod and an inverted thimble hanging table connected to one end of the inverted thimble rod close to the product thimble; the thimble hanging table is characterized in that a step hole for clamping and embedding an inverted thimble is formed in the lower push plate, the step hole comprises a first accommodating groove for accommodating the inverted thimble hanging table and a second accommodating groove for accommodating the inverted thimble rod to insert, and the distance between the bottom wall and the top surface of the lower push plate in the first accommodating groove is greater than the axial length of the inverted thimble hanging table.

The utility model discloses further set up to: the time delay thimbles are arranged in parallel.

The utility model discloses further set up to: the distance between the bottom surface of the inverted thimble hanging table and the inner bottom wall of the first accommodating groove is 2-3 mm.

The utility model discloses further set up to: the product thimble includes columniform product thimble rod and connects the product thimble at product thimble rod one end and hangs the platform, the product thimble hangs the platform and props up with inversion thimble and hangs the platform.

The utility model discloses further set up to: the runner thimble includes columniform runner thimble rod and connects the runner thimble string platform in runner thimble rod one end, the axial length of runner thimble rod is greater than the axial length of product thimble rod.

The utility model discloses further set up to: the bottom surface of the upper push plate is provided with a groove for accommodating the flow channel thimble hanging table and the product thimble hanging table, the depth of the groove is equal to the axial length of the flow channel thimble hanging table, and the groove is communicated with the step hole.

To sum up, the utility model discloses a beneficial technological effect does:

1. through the arrangement of the inverted thimble, when the die sinking ejection is actuated, and the upper and lower push plates advance, the thimble of the flow channel advances to eject the flow channel, at the moment, because of the clearance between the inner bottom wall of the first accommodating groove and the bottom surface of the inverted thimble hanging table, the thimble of the product does not actuate, the formed product still remains on the mold core, and the sprue and the product are separated in advance; after the ejection action is continuously carried out until the inner bottom wall of the first accommodating groove is abutted against the bottom surface of the inverted thimble hanging table, the product thimble is also driven by the push plate, and the molded product is further ejected;

2. the time delay thimble is provided with a plurality of, and ejecting action lasts to the diapire in the first holding tank and inverts the thimble and hang the platform bottom surface and offset the back, and the product thimble is also driven by the push pedal, when ejecting with the shaping product, and the whole atress of product is even, improves the yield of product.

Drawings

FIG. 1 is a schematic diagram of the overall structure of a thimble of a mold in the prior art;

FIG. 2 is a schematic structural view for showing a molded product and a runner;

fig. 3 is a schematic overall structure diagram of an embodiment of the present invention;

FIG. 4 is a schematic cross-sectional view for showing an inverted thimble;

FIG. 5 is a schematic view for showing the structure of the delay thimble;

fig. 6 is a schematic structural view for showing a runner thimble.

In the figure, 1, a thimble rod; 11. a thimble hanging table; 2. forming a product; 3. a flow channel; 4. a push plate is arranged; 41. a groove; 5. a lower push plate; 51. a first accommodating groove; 52. a second accommodating groove; 6. a flow passage thimble; 61. A runner thimble rod; 62. a flow channel thimble hanging table; 7. a product thimble; 71. a product thimble rod; 72. a product thimble hanging table; 8. inverting the thimble; 81. inverting the thimble rod; 82. inverting the thimble hanging table; 9. a time-delay thimble.

Detailed Description

The following detailed description of the preferred embodiments of the present invention will be provided in conjunction with the accompanying drawings, so as to enable those skilled in the art to more easily understand the advantages and features of the present invention, and thereby define the scope of the invention more clearly and clearly.

Referring to fig. 3, for the utility model discloses an inversion thimble device of mould, including the top board 4 and the bottom board 5 that are parallel to each other, set up the runner thimble 6 that is used for ejecting runner 3 in top board 4 and set up the time delay thimble 9 that is used for ejecting shaping product 2 in top board 4 and bottom board 5. The upper push plate 4 and the lower push plate 5 are fixed by screws. The sections of the upper push plate 4 and the lower push plate 5 are rectangular. In this embodiment, three delay thimbles 9 are arranged, and the delay thimbles 9 are in a shape of Chinese character 'zhong' and are all arranged perpendicular to the top surface of the upper push plate 4; one flow channel thimble 6 is arranged and is perpendicular to the top surface of the upper push plate 4.

Referring to fig. 4 and 6, the flow channel thimble 6 includes a cylindrical flow channel thimble rod 61 and a flow channel thimble suspension table 62 integrally formed with the flow channel thimble rod 61, and the flow channel thimble suspension table 62 is cylindrical. The flow channel thimble hanging table 62 is located at one end of the flow channel thimble rod 61 and the outer diameter of the flow channel thimble hanging table 62 is larger than the outer diameter of the flow channel thimble rod 61. The bottom surface of the push-up plate 4 is provided with a groove 41 for accommodating the flow channel thimble hanging table 62, and the section of the groove 41 is rectangular. The depth of the groove 41 is equal to the axial length of the flow channel thimble hanging table 62, and the bottom surface of the flow channel thimble hanging table 62 is in contact with the top surface of the lower push plate 5.

Referring to fig. 4 and 5, the delay thimble 9 includes a product thimble 7 disposed in the upper push plate 4 and an inverted thimble 8 disposed in the lower push plate 5 and abutting against the product thimble 7, and the inverted thimble 8 includes a cylindrical inverted thimble rod 81 and an inverted thimble suspension table 82 integrally formed with the inverted thimble rod 81. The inverted thimble suspension platform 82 is cylindrical, and the inverted thimble suspension platform 82 is the same size as the flow channel thimble suspension platform 62. The outer diameter of the inverted ejector pin hanging stand 82 is larger than the outer diameter of the inverted ejector pin 81. The lower push plate 5 is internally provided with a stepped hole for clamping and embedding the inverted thimble 8, the stepped hole comprises a first accommodating groove 51 for accommodating the inverted thimble hanging platform 82 and a second accommodating groove 52 for inserting the inverted thimble rod 81, the second accommodating groove 52 extends to the bottom surface of the lower push plate 5 to form an opening, the cross section of the second accommodating groove 52 is circular, and the inner diameter of the second accommodating groove 52 is equal to the outer diameter of the inverted thimble rod 81. The first receiving groove 51 extends to the top surface of the lower pushing plate 5 to form an opening, in this embodiment, the cross section of the first receiving groove 51 is circular, and the inner diameter of the first receiving groove 51 is larger than the outer diameter of the inverted thimble hanging platform 82. The distance between the inner bottom wall of the first accommodating groove 51 and the top surface of the lower push plate 5 is greater than the axial length of the inverted thimble hanging platform 82. The distance (delay) between the bottom surface of the inverted thimble hanging platform 82 and the bottom wall of the first accommodating groove 51 is 2-3 mm.

Referring to fig. 4 and 5, the product thimble 7 includes a cylindrical product thimble rod 71 and a product thimble suspension table 72 integrally formed with the product thimble rod 71, the product thimble suspension table 72 is cylindrical, and the size of the product thimble suspension table 72 is the same as that of the flow channel thimble suspension table 62. The outer diameter of the product ejector suspending table 72 is larger than the outer diameter of the product ejector rod 71. The bottom surface of the product thimble suspension 72 abuts the top surface of the inverted thimble suspension 82. The axial length of the runner ejector pin 61 is greater than the axial length of the product ejector pin 71. The difference in length between the flow channel needle assembly 61 and the product needle assembly 71 is equal to the distance (i.e., the delay) between the bottom surface of the inverted spike holder 82 and the bottom wall of the first receiving well 51.

The implementation principle of the embodiment is as follows: when the mold opening ejection is actuated, the upper push plate 4 and the lower push plate 5 advance together, the runner thimble 6 advances to eject the runner 3, and at this time, the product thimble 7 is not actuated due to the gap between the inner bottom wall of the first accommodating groove 51 and the bottom surface of the inverted thimble hanging table 82, and the molded product 2 remains on the mold core, so that the sprue and the product are separated in advance.

After the ejection action is continued until the inner bottom wall of the first accommodating groove 51 abuts against the bottom surface of the inverted thimble hanging table 82, the inverted thimble hanging table 82 applies forward thrust to the product thimble 7, and the product thimble 7 is also driven by the push plate to further eject the molded product 2. The side gate injection mold can realize separation of the runner and the product in the mold without manual secondary processing. The thimble inversion structure is simple, the realizability is high, and the processing cost is low. The inverted thimble realizes the separation of the flow channel in the mould and the product, the function is stable, and the reject ratio of the product is low.

The above only is the embodiment of the present invention, not limiting the patent scope of the present invention, all the equivalent structures or equivalent processes that are used in the specification and the attached drawings or directly or indirectly applied to other related technical fields are included in the patent protection scope of the present invention.

Claims

1. The utility model provides an inversion thimble device of mould which characterized in that: the device comprises an upper push plate (4) and a lower push plate (5) which are parallel to each other, a flow channel thimble (6) which is arranged in the upper push plate (4) and used for ejecting a flow channel (3), and a delay thimble (9) which is arranged in the upper push plate (4) and the lower push plate (5) and used for ejecting a molded product (2), wherein the delay thimble (9) is parallel to the flow channel thimble (6); the time-delay thimble (9) comprises a product thimble (7) arranged in the upper push plate (4) and an inverted thimble (8) arranged in the lower push plate (5) and abutted against the product thimble (7), and the inverted thimble (8) comprises a cylindrical inverted thimble rod (81) and an inverted thimble hanging table (82) connected to one end, close to the product thimble (7), of the inverted thimble rod (81); the utility model discloses a thimble structure, including lower push pedal (5), set up the step hole that supplies to invert thimble (8) inlay card in lower push pedal (5), the step hole is including holding first holding tank (51) of inverting thimble hanging table (82) and supplying to invert thimble rod (81) male second holding tank (52), the distance between diapire and lower push pedal (5) top surface is greater than the axial length of inverting thimble hanging table (82) in first holding tank (51).

2. The inverted ejector pin device for the mold according to claim 1, wherein: the time-delay thimbles (9) are arranged in parallel.

3. The inverted ejector pin device for the mold according to claim 2, wherein: the distance between the bottom surface of the inverted thimble hanging table (82) and the inner bottom wall of the first accommodating groove (51) is 2-3 mm.

4. The inverted ejector pin device for the mold according to claim 1, wherein: the product thimble (7) comprises a cylindrical product thimble rod (71) and a product thimble hanging table (72) connected to one end of the product thimble rod (71), and the product thimble hanging table (72) is abutted to the inverted thimble hanging table (82).

5. The inverted ejector pin device for a mold according to claim 4, wherein: the runner thimble (6) comprises a cylindrical runner thimble rod (61) and a runner thimble hanging table (62) connected to one end of the runner thimble rod (61), and the axial length of the runner thimble rod (61) is greater than that of the product thimble rod (71).

6. The inverted ejector pin device for a mold according to claim 5, wherein: the bottom surface of the upper push plate (4) is provided with a groove (41) for accommodating the flow channel thimble hanging table (62) and the product thimble hanging table (72), the depth of the groove (41) is equal to the axial length of the flow channel thimble hanging table (62), and the groove (41) is communicated with the step hole.