CN216578792U

CN216578792U - Thimble core pulling mechanism

Info

Publication number: CN216578792U
Application number: CN202123090751.1U
Authority: CN
Inventors: 杨靖
Original assignee: Yu Zhuo Precision Plastic Co ltd
Current assignee: Yu Zhuo Precision Plastic Co ltd
Priority date: 2021-12-09
Filing date: 2021-12-09
Publication date: 2022-05-24
Anticipated expiration: 2031-12-09

Abstract

The utility model relates to the technical field of thimble core-pulling mechanisms, and discloses a thimble core-pulling mechanism, which comprises a B plate, wherein the B plate is horizontally arranged, a thimble panel, a thimble base plate and a base plate are sequentially and horizontally arranged below the B plate, a placing groove is horizontally arranged on the top surface of the B plate, a rear mold core is horizontally arranged in the placing groove, a product is arranged above the rear mold core, a thimble is vertically arranged below the thimble panel, the top end of the thimble fixedly penetrates through the thimble panel and extends to the position above the thimble panel, and the bottom surface of the thimble panel is fixedly connected with the top surface of the thimble base plate. This thimble mechanism of loosing core, at the during operation, thimble panel and thimble bottom plate drive whole thimbles, BOSS post thimble and sleeve ejecting together, have realized pushing up from the effect of back mould benevolence, obtain the backstepping power through B board top contact sleeve, will drive BOSS post thimble and retreat when the continuation motion, make BOSS post thimble retreat from the power of hugging closely of BOSS post, overall structure is simple, the defective rate is low, ejecting effectual.

Description

Thimble core pulling mechanism

Technical Field

The utility model relates to the technical field of thimble core pulling mechanisms, in particular to a thimble core pulling mechanism.

Background

Under general conditions, the preferred BOSS column position is a cylinder ejecting structure, the product is ejected out of the cylinder and pulled out of the core at the same time, the most ideal mold ejecting structure is realized, the product can naturally fall off after being ejected out, and in fact, the strength of the steel material for manufacturing the cylinder is not enough and is very easy to damage when the glue position thickness of the BOSS column with part of the product is too thin (less than 0.5mm), and the generation cost is greatly improved. It is necessary to add a core pulling structure other than the ejector cartridge. Therefore, a thimble core-pulling structure needs to be designed, so that the product can be smoothly demoulded, and the reject ratio of the product is reduced.

SUMMERY OF THE UTILITY MODEL

The utility model aims to provide a thimble core-pulling mechanism to solve the problems in the background technology.

In order to achieve the purpose, the utility model provides the following technical scheme: the ejector pin core-pulling mechanism comprises a plate B, wherein the plate B is horizontally arranged, an ejector pin panel, an ejector pin bottom plate and a bottom plate are sequentially and horizontally arranged below the plate B, a placing groove is horizontally formed in the top surface of the plate B, a rear mold core is horizontally arranged in the placing groove, and a product is arranged above the rear mold core;

the thimble structure is characterized in that a thimble is vertically arranged below the thimble panel, the top end of the thimble is fixedly penetrated through the thimble panel and extends to the top of the thimble panel, the bottom surface of the thimble panel is fixedly connected with the top surface of the thimble base plate, a middle support is vertically arranged below the bottom plate, the top end of the middle support is fixedly penetrated through the bottom surface of the bottom plate and extends to the top of the bottom plate, the top end of the middle support is sequentially penetrated through the thimble base plate and the thimble panel and extends to the top of the thimble panel and is fixedly connected with the bottom surface of the B plate, and the surface of the middle support is connected with the inner wall of the thimble base plate and the thimble panel in a sliding manner.

Preferably, a guide pillar is vertically arranged below the plate B, the top end of the guide pillar penetrates through the bottom surface of the plate B and extends to the position above the plate B, and the inner wall of the plate B is fixedly connected with the surface of the guide pillar.

Preferably, the thimble left side is vertical to be provided with the back needle, the fixed thimble panel setting that runs through in back needle bottom, the fixed B board setting that runs through in back needle top.

Preferably, the surface of the back needle is sleeved with a thimble spring, and the upper end and the lower end of the thimble spring are respectively fixedly connected with the bottom surface of the B plate and the top surface of the thimble panel.

Preferably, the thimble panel below is vertical to be provided with the sleeve, the sleeve cross-section sets up for the T type, the sleeve top slides and runs through thimble panel and extend to the thimble panel top, the vertical BOSS post thimble that is provided with in sleeve below, BOSS post thimble top is run through the sleeve and is extended to the thimble panel top, BOSS post thimble surface and sleeve inner wall fixed connection, the vertical mounting groove of seting up the looks adaptation of thimble bottom plate top surface corresponding sleeve bottom position.

Preferably, the sleeve bottom extends to inside the mounting groove, the inside vertical time delay thimble that is provided with of mounting groove, time delay thimble top surface and sleeve and BOSS post thimble bottom surface contact, time delay thimble bottom runs through the inside bottom surface of mounting groove and extends to thimble bottom plate below, time delay thimble bottom surface cover is equipped with the answer spring, answer spring upper and lower end respectively with the contact of the inside bottom surface of time delay thimble and the inside bottom surface of mounting groove.

Preferably, a second moving through hole and a first moving through hole are vertically formed in the B plate corresponding to the top end of the ejector pin and the top end of the BOSS column ejector pin in a penetrating mode, a second moving through hole and an ejection through hole are vertically formed in the rear die core corresponding to one position of the second moving through hole and the moving through hole in a penetrating mode, the top end of the ejector pin penetrates through the second moving through hole and extends into the ejector pin through hole, the top end of the BOSS column ejector pin sequentially penetrates through the first moving through hole, the ejection through hole and penetrates through the product, a BOSS column groove is vertically formed in the inner wall of the top end of the ejection through hole, a BOSS column is vertically arranged in the BOSS column groove, and the top end of the BOSS column is fixedly connected with the bottom surface of the product.

Compared with the prior art, the utility model has the beneficial effects that: this thimble mechanism of loosing core, at the during operation, thimble panel and thimble bottom plate drive whole thimbles, BOSS post thimble and sleeve ejecting together, have realized pushing up from the effect of back mould benevolence, obtain the backstepping power through B board top contact sleeve, will drive BOSS post thimble and retreat when the continuation motion, make BOSS post thimble retreat from the power of hugging closely of BOSS post, overall structure is simple, the defective rate is low, ejecting effectual.

Drawings

FIG. 1 is a sectional view of the overall front structure of the present invention;

FIG. 2 is an enlarged view of area A of FIG. 1 in accordance with the present invention;

FIG. 3 is an enlarged view of area B of FIG. 1 according to the present invention.

In the figure: the device comprises a plate B1, a placing groove 2, a rear mold core 3, a product 4, a guide pillar 5, a thimble panel 6, a thimble base plate 7, a base plate 8, a return pin 9, a thimble spring 10, a middle support part 11, a thimble 12, a sleeve 13, a BOSS column thimble 14, a mounting groove 15, a delay thimble 16, a return spring 17, a first moving through hole 18, a first ejecting through hole 19, a BOSS column groove 20, a second moving through hole 21 and a thimble through hole 22.

Detailed Description

The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.

Referring to fig. 1-3, the present invention provides a technical solution: the ejector pin core pulling mechanism comprises a B plate 1, wherein the B plate 1 is horizontally arranged, an ejector pin panel 6, an ejector pin bottom plate 7 and a bottom plate 8 are sequentially and horizontally arranged below the B plate 1, a placing groove 2 is horizontally formed in the top surface of the B plate 1, a rear mold core 3 is horizontally arranged in the placing groove 2, and a product 4 is arranged above the rear mold core 3;

a thimble 12 is vertically arranged below the thimble panel 6, the top end of the thimble 12 fixedly penetrates through the thimble panel 6 and extends to the upper part of the thimble panel 6, the bottom surface of the thimble panel 6 is fixedly connected with the top surface of the thimble base plate 7, a middle support 11 is vertically arranged below the bottom plate 8, the top end of the middle support 11 fixedly penetrates through the bottom surface of the bottom plate 8 and extends to the upper part of the thimble panel 6 and is fixedly connected with the bottom surface of the B plate 1, the surface of the middle support 11 is slidably connected with the thimble base plate 7 and the inner wall of the thimble panel 6, a guide pillar 5 is vertically arranged below the B plate 1, the top end of the guide pillar 5 penetrates through the bottom surface of the B plate 1 and extends to the upper part of the B plate 1, the inner wall of the B plate 1 is fixedly connected with the surface of the guide pillar 5, a return pin 9 is vertically arranged at the left side of the thimble 12, the bottom end of the return pin is fixedly arranged through the thimble panel 6, the top end of the return pin 9 is fixedly arranged through the B plate 1, the surface of the back needle 9 is sleeved with an ejector spring 10, and the upper end and the lower end of the ejector spring 10 are respectively fixedly connected with the bottom surface of the B plate 1 and the top surface of the ejector panel 6;

a sleeve 13 is vertically arranged below the thimble panel 6, the section of the sleeve 13 is in a T-shaped arrangement, the top end of the sleeve 13 slidably penetrates through the thimble panel 6 and extends to the upper part of the thimble panel 6, a BOSS column thimble 14 is vertically arranged below the sleeve 13, the top end of the BOSS column thimble 14 penetrates through the sleeve 13 and extends to the upper part of the thimble panel 6, the surface of the BOSS column thimble 14 is fixedly connected with the inner wall of the sleeve 13, a mounting groove 15 matched with the top surface of the thimble base plate 7 is vertically arranged at the position corresponding to the bottom end of the sleeve 13, the bottom end of the sleeve 13 extends to the inside of the mounting groove 15, a delay thimble 16 is vertically arranged in the mounting groove 15, the top surface of the delay thimble 16 is contacted with the sleeve 13 and the bottom surface of the BOSS column thimble 14, the bottom end of the delay thimble 16 penetrates through the inside of the mounting groove 15 and extends to the lower part of the thimble base plate 7, a return spring 17 is sleeved on the bottom surface of the delay thimble 16, the upper and lower ends of the return spring 17 are respectively contacted with the inside top surface of the delay thimble 16 and the inside of the mounting groove 15, a second moving through hole 21 and a first moving through hole 18 are vertically communicated with the top end of a BOSS column thimble 14 corresponding to the top end of the thimble 12 in the B plate 1, a thimble through hole 22 and an ejection through hole 19 are vertically communicated with the top end of the BOSS column thimble 14 corresponding to the second moving through hole 21 and the first moving through hole 18 in the rear mold core 3, the top end of the thimble 12 extends into the thimble through hole 22 through the second moving through hole 21, the top end of the BOSS column thimble 14 sequentially passes through the first moving through hole 18 and the ejection through hole 19 and is arranged through the product 4, a BOSS column groove 20 is vertically arranged on the inner wall of the top end of the ejection through hole 19, a BOSS column is vertically arranged in the BOSS column groove 20, the top end of the BOSS column is fixedly connected with the bottom surface of the product 4, and when the B plate 1 works, the thimble panel 6 and the thimble bottom plate 7 drive all the thimbles 12, the BOSS column thimbles 14 and the sleeves 13 to be ejected together, thereby realizing the effect of ejecting from the rear mold core 3, and obtaining reverse thrust power by the top of the B plate 1 contacting the sleeve 13, when the movement continues, the BOSS column ejector pin 14 is driven to retreat, so that the BOSS column ejector pin 14 retreats from the clamping force of the BOSS column, the whole structure is simple, the reject ratio is low, and the ejection effect is good.

When the ejection mechanism is used, the sleeve 13 can be firstly ejected to the bottom of the B plate 1 to obtain the reverse driving power to drive the BOSS column ejector pin 14 to retreat in the ejection process, the delay ejector pin 16 can compress the return spring 17 in the process, the whole ejection tail end is the core pulling process, the core pulling stroke is determined according to the height of the BOSS column of a product and the mold stripping angle, the product 4 and the rear mold core 3 as well as the BOSS column ejector pin 14 and the BOSS column are encapsulated, and the sleeve 13 drives the BOSS column ejector pin 14 to break away from the encapsulation force of a plastic product by utilizing the reverse driving power.

Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that changes, modifications, substitutions and alterations can be made in the embodiments without departing from the principles and spirit of the utility model, the scope of which is defined in the appended claims and their equivalents.

Claims

1. Thimble mechanism of loosing core, including B board (1), its characterized in that: the B plate (1) is horizontally arranged, an ejector pin panel (6), an ejector pin base plate (7) and a base plate (8) are sequentially horizontally arranged below the B plate (1), a placing groove (2) is horizontally formed in the top surface of the B plate (1), a rear mold core (3) is horizontally arranged in the placing groove (2), and a product (4) is arranged above the rear mold core (3);

a thimble (12) is vertically arranged below the thimble panel (6), the top end of the thimble (12) fixedly penetrates through the thimble panel (6) and extends to the top of the thimble panel (6), the bottom surface of the thimble panel (6) is fixedly connected with the top surface of the thimble base plate (7), a middle support (11) is vertically arranged below the bottom plate (8), the top end of the middle support (11) fixedly penetrates through the bottom surface of the bottom plate (8) and extends to the top of the bottom plate (8), the top end of the middle support (11) sequentially penetrates through the thimble base plate (7) and the thimble panel (6) and extends to the top of the thimble panel (6) and is fixedly connected with the bottom surface of the B plate (1), the surface of the middle support (11) is connected with the inner walls of the thimble base plate (7) and the thimble panel (6) in a sliding manner, a sleeve (13) is vertically arranged below the thimble panel (6), and the section of the sleeve (13) is in a T shape, sleeve (13) top slides and runs through thimble panel (6) and extends to thimble panel (6) top, sleeve (13) below is vertical to be provided with BOSS post thimble (14), BOSS post thimble (14) top is run through sleeve (13) and is extended to thimble panel (6) top, BOSS post thimble (14) surface and sleeve (13) inner wall fixed connection, thimble bottom plate (7) top surface corresponds sleeve (13) bottom position and vertically offers mounting groove (15) of looks adaptation.

2. The ejector pin core-pulling mechanism according to claim 1, characterized in that: guide pillars (5) are vertically arranged below the plate B (1), the top ends of the guide pillars (5) penetrate through the bottom surface of the plate B (1) and extend to the upper portion of the plate B (1), and the inner wall of the plate B (1) is fixedly connected with the surfaces of the guide pillars (5).

3. The ejector pin core-pulling mechanism according to claim 1, characterized in that: thimble (12) left side is vertical to be provided with back needle (9), the back needle bottom mounting runs through thimble panel (6) setting, back needle (9) top is fixed to run through B board (1) setting.

4. The ejector pin core-pulling mechanism according to claim 3, characterized in that: the surface of the back needle (9) is sleeved with a thimble spring (10), and the upper end and the lower end of the thimble spring (10) are respectively fixedly connected with the bottom surface of the B plate (1) and the top surface of the thimble panel (6).

5. The ejector pin core-pulling mechanism according to claim 1, characterized in that: sleeve (13) bottom extends to inside mounting groove (15), inside vertical delay thimble (16) that is provided with of mounting groove (15), delay thimble (16) top surface and sleeve (13) and BOSS post thimble (14) bottom surface contact, the inside bottom surface of mounting groove (15) is run through to delay thimble (16) bottom and extends to thimble bottom plate (7) below, delay thimble (16) bottom surface cover is equipped with answer spring (17), answer spring (17) upper and lower end respectively with the inside bottom surface contact of delay thimble (16) inboard top surface and mounting groove (15).

6. The ejector pin core-pulling mechanism according to claim 5, characterized in that: the novel die is characterized in that a second moving through hole (21) and a first moving through hole (18) are vertically formed in the B plate (1) in a penetrating mode corresponding to the top end of the ejector pin (12) and the top end of the BOSS column ejector pin (14), an ejector pin through hole (22) and an ejection through hole (19) are vertically formed in the rear die core (3) in a penetrating mode corresponding to the second moving through hole (21) and the first moving through hole (18), the top end of the ejector pin (12) penetrates through the second moving through hole (21) and extends into the ejector pin through hole (22), the top end of the BOSS column ejector pin (14) sequentially penetrates through the first moving through hole (18) and the ejection through hole (19) and penetrates through the product (4), a BOSS column groove (20) is vertically formed in the inner wall of the top end of the ejection through hole (19), a BOSS column is vertically arranged in the BOSS column groove (20), and the top end of the BOSS column is fixedly connected with the bottom surface of the product (4).