CN218053797U

CN218053797U - Disconnected stub bar pull-out type mould in cylindric injection molding mould

Info

Publication number: CN218053797U
Application number: CN202221717303.1U
Authority: CN
Inventors: 卢惠军; 盛光鑫; 傅迎梅
Original assignee: Kunshan Changjie Precision Mold Industry Co ltd
Current assignee: Kunshan Changjie Precision Mold Industry Co ltd
Priority date: 2022-07-04
Filing date: 2022-07-04
Publication date: 2022-12-16
Anticipated expiration: 2032-07-04

Abstract

The utility model relates to a broken material head draw-out type mould in a cylindrical injection molding mould, which comprises a lower template, a lower cushion plate and a bottom plate which are sequentially stacked from top to bottom, wherein a lower mould core is arranged in the lower template; the material head blocking device also comprises a material head jacking block, a material head blocking positioning pin, an oil cylinder, a sliding seat and an inner embedded cylinder; the stub bar top block is movably arranged in the groove on the lower die core, and the top of the stub bar top block corresponds to the position of a main runner at the top of the lower die core; the stub bar blocking positioning pin is positioned at the position, close to the auxiliary flow channel, of the top of the lower die core; the oil cylinder is connected with the side face of the lower template, the sliding seat is connected with a piston rod of the oil cylinder, and the inner embedded cylinder is located on the sliding seat. The utility model discloses improve the mould structure, adopt the side direction to take out from cylindric injection molding product mode, collocation stub bar jack-up with block, strengthen blockking to the stub bar, realize the smooth and easy separation of cylindric injection molding product and stub bar, avoid wire drawing and phenomenons of warping.

Description

Disconnected stub bar pull-out type mould in cylindric injection molding mould

Technical Field

The utility model relates to a mould structure, concretely relates to disconnected stub bar pull-out type mould in cylindric injection molding mould.

Background

The cylindrical injection molding part is formed by injection molding operation through an injection mold, and the separation of an injection molding part product and a stub bar can be realized in the mold.

The injection molding product is cylindrical, slender and thin in wall; when the existing injection mold separates a stub bar and an injection molding product, the stub bar is not blocked, so that the stub bar and the injection molding product are not smoothly separated, a wire drawing phenomenon is generated, and the thin-walled injection molding product is locally deformed, so that the injection molding product is scrapped.

SUMMERY OF THE UTILITY MODEL

The utility model aims at:

design disconnected stub bar pull-out type mould in cylindric injection molding mould, improve the mould structure, adopt the side direction to take out cylindric injection molding product mode, collocation stub bar jack-up with block, strengthen blockking to the stub bar, realize the smooth and easy separation of cylindric injection molding product and stub bar, avoid wire drawing and phenomenons of warping.

In order to achieve the above object, the present invention provides the following technical solutions:

a broken stub bar draw-out type mould in a cylindrical injection molding mould comprises a lower template, a lower backing plate and a bottom plate which are sequentially stacked from top to bottom, wherein a lower mould core is arranged in the lower template; the device also comprises a stub bar jacking block, a stub bar blocking positioning pin, an oil cylinder, a sliding seat and an embedded cylinder; the stub bar top block is movably arranged in the groove on the lower die core, and the top of the stub bar top block corresponds to the position of a main runner at the top of the lower die core; the stub bar blocking positioning pin is positioned at the position, close to the auxiliary flow channel, of the top of the lower die core; the oil cylinder is connected with the side face of the lower die plate, the sliding seat is connected with a piston rod of the oil cylinder, the inner embedded cylinder is located on the sliding seat, and the inner embedded cylinder corresponds to the cavity on the lower die core in position.

Furthermore, the stub bar kicking block specifically is located the ladder inslot on the lower mould benevolence, stub bar kicking block lower part is provided with the fixture block, is provided with the spring in the blind hole of bottom.

Furthermore, the auxiliary runner is Y-shaped and communicated with the main runner and the cavity, and the stub bar blocking positioning pin is vertically arranged at the position close to the branch of the Y-shaped auxiliary runner.

Furthermore, the stub bar blocking positioning pin is cylindrical and the top end of the stub bar blocking positioning pin is provided with a chamfer structure, and the stub bar blocking positioning pin corresponds to the secondary flow channel one to one.

Further, the oil cylinder is horizontally arranged, the sliding seat is movably connected with the lower template through a sliding rail, and the inner embedded cylinder is of a stepped cylindrical structure.

Furthermore, a temperature sensor is arranged inside the inner embedded cylinder.

The utility model has the advantages that: the utility model provides a disconnected stub bar pull-out type mould in cylindric injection molding mould, improve the mould structure, block the locating pin through the stub bar kicking block, the stub bar, the hydro-cylinder, the cooperation of a slide and an interior section of thick bamboo is utilized, adopt the side direction to take out cylindric injection molding product mode, collocation stub bar jack-up blocks with the side is moved, strengthen blockking to the stub bar, realize the quick, smooth and easy separation of cylindric injection molding product and stub bar, avoid appearing wire drawing and deformation phenomenon, thereby promote product shaping quality, reduce the disability rate.

Drawings

Fig. 1 is the utility model discloses a disconnected stub bar pull-out type mould's in cylindric injection molding mould structural view.

Fig. 2 is a partial structural view of the structure shown in fig. 1.

Fig. 3 is a partial structural view of the structure shown in fig. 2.

Fig. 4 is a partial structural view of the structure shown in fig. 3.

Fig. 5 is the utility model discloses a stub bar kicking block structure view of disconnected stub bar pull-out type mould in cylindric injection molding mould.

In the figure: 1. a lower template; 2. a lower base plate; 3. a base plate; 4. a lower die core; 41. a main flow channel; 42. a secondary flow passage; 5. a stub bar top block; 51. a spring; 6. a stub bar blocking positioning pin; 7. an oil cylinder; 8. a slide base; 9. a slide rail; 10. an inner embedded cylinder; 11. a temperature sensor.

Detailed Description

In order to make the objects, technical solutions and advantages of the present invention clearer and clearer, the present invention will be described in further detail with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are for purposes of illustration only and are not intended to limit the invention.

Referring to fig. 1 to 5, the broken stub bar draw-out type mold in the cylindrical injection molding mold comprises a lower template 1, a lower backing plate 2 and a bottom plate 3 which are sequentially stacked from top to bottom, wherein a lower mold core 4 is arranged in the lower template 1; the device also comprises a stub bar top block 5, a stub bar blocking positioning pin 6, an oil cylinder 7, a sliding seat 8 and an inner embedded cylinder 10; the stub bar ejector block 5 is movably arranged in a groove on the lower die core 4, the stub bar ejector block 5 can move up and down relative to the lower die core 4, the top of the stub bar ejector block 5 corresponds to the position of a main runner 41 at the top of the lower die core 4, and the groove at the top of the stub bar ejector block 5 is a constituent part of the main runner 41; the stub bar blocking positioning pin 6 is positioned at the position, close to the auxiliary flow passage 42, of the top of the lower die core 4, the stub bar blocking positioning pin 6 not only can play a positioning and guiding role in the die assembly of the upper die core and the lower die core 4, but also can play a role in blocking the stub bar when the die is opened, and the phenomenon that the stub bar is insufficiently blocked to generate wire drawing is avoided; the oil cylinder 7 is connected with the side face of the lower template 1, the sliding seat 8 is connected with a piston rod of the oil cylinder 7, the oil cylinder 7 is driven by hydraulic oil and used for driving the sliding seat 8 to move in a reciprocating mode, the embedded cylinder 10 is located on the sliding seat 8, the position of the embedded cylinder 10 corresponds to that of a cavity in the lower mold core 4, and the embedded cylinder 10 participates in molding of the inner wall of an injection molding product.

Stub bar kicking block 5 specifically is located the ladder inslot on lower mould benevolence 4, stub bar kicking block 5 lower part is provided with the fixture block, is provided with spring 51 in the blind hole of bottom, and the fixture block cooperatees with the ladder groove for inject stub bar kicking block 5's stroke, spring 51 are used for providing lasting elasticity to stub bar kicking block 5.

The auxiliary runner 42 is Y-shaped and communicated with the main runner 41 and the cavity, and the stub bar blocking positioning pin 6 is vertically arranged at the branch position close to the Y-shaped auxiliary runner 42, so that the blocking of the Y-shaped stub bar can be realized.

The stub bar blocking positioning pin 6 is cylindrical and the top end of the stub bar blocking positioning pin is provided with a chamfer structure, the stub bar blocking positioning pin 6 corresponds to the auxiliary flow channel 42 one by one, and blocking of all the stub bars is correspondingly achieved.

The oil cylinder 7 is horizontally arranged, the oil cylinder 7 is connected with an external oil pump through an oil pipe, the sliding seat 8 is movably connected with the lower template 1 through a sliding rail 9, and the inner embedded cylinder 10 is of a stepped cylindrical structure and participates in the molding of the inner wall of an injection molding product.

The inner embedded cylinder 10 is internally provided with a temperature sensor 11, and the temperature sensor 11 is specifically a thermocouple, is in a shape of a long and thin rod, is positioned in a hole of the inner embedded cylinder 10, and is used for detecting the temperature of the inner embedded cylinder 10 so as to obtain the temperature of an injection molding product.

The utility model discloses a theory of operation does: in the mold opening process, the injection molding machine drives the upper mold part to be separated from the lower mold part, the upper mold core is separated from the lower mold core 4, the stub bar ejecting block 5 is ejected upwards under the action of the elastic force of the spring 51 to drag the stub bar in the main flow channel 41 to be lifted, the stub bar in the auxiliary flow channel is lifted along with the stub bar until the fixture block is ejected to the wall surface of the stepped groove, and the stub bar ejecting block 5 is stopped;

subsequently, the temperature sensor 11 reads the temperature value of the inner embedded cylinder 10, if the temperature value is lower than the set temperature, the curing rate of the injection molding product reaches the standard, the piston rod of the oil cylinder 7 drives the sliding seat 8 to retreat along the sliding rail 9, the injection molding product moves along with the inner embedded cylinder 10, the stub bar and the injection molding product move together until the stub bar in the shape of the Y touches the stub bar to block the positioning pin 6, the breaking-off of the stub bar and the product is realized instantly, and the wire drawing phenomenon and the local deformation phenomenon of the product are avoided.

The above examples are provided to further illustrate the present invention, but do not limit the present invention to these specific embodiments. Any modification, equivalent replacement, and improvement made within the spirit and principle of the present invention should be understood as being within the protection scope of the present invention.

Claims

1. A broken stub bar draw-out type mould in a cylindrical injection molding mould comprises a lower template (1), a lower backing plate (2) and a bottom plate (3) which are sequentially stacked from top to bottom, wherein a lower mould core (4) is arranged in the lower template (1); the method is characterized in that: the device also comprises a stub bar top block (5), a stub bar blocking positioning pin (6), an oil cylinder (7), a sliding seat (8) and an inner embedded cylinder (10); the stub bar ejector block (5) is movably arranged in a groove on the lower die core (4), and the top of the stub bar ejector block (5) corresponds to the position of a main runner (41) at the top of the lower die core (4); the stub bar blocking positioning pin (6) is positioned at the position, close to the auxiliary flow passage (42), of the top of the lower die core (4); the oil cylinder (7) is connected with the side face of the lower template (1), the sliding seat (8) is connected with a piston rod of the oil cylinder (7), the inner embedded cylinder (10) is located on the sliding seat (8), and the inner embedded cylinder (10) corresponds to the cavity on the lower mold core (4).

2. The die for drawing out the broken stub bar in the cylindrical injection molding piece according to claim 1, wherein: the stub bar ejector pad (5) is specifically located in a stepped groove in the lower die core (4), a clamping block is arranged on the lower portion of the stub bar ejector pad (5), and a spring (51) is arranged in a blind hole in the bottom end of the stub bar ejector pad.

3. The die of claim 2, wherein the die comprises: the auxiliary runner (42) is Y-shaped and communicated with the main runner (41) and the cavity, and the stub bar blocking positioning pin (6) is vertically arranged at a branch position close to the Y-shaped auxiliary runner (42).

4. The die of claim 3 for extracting a stub bar in a cylindrical injection molding die, wherein: the stub bar blocking positioning pin (6) is cylindrical, a chamfer structure is arranged at the top end of the stub bar blocking positioning pin, and the stub bar blocking positioning pin (6) corresponds to the auxiliary flow channel (42) one by one.

5. The die of claim 4 for extracting a stub bar in a cylindrical injection molding die, wherein: the oil cylinder (7) is horizontally arranged, the sliding seat (8) is movably connected with the lower template (1) through a sliding rail (9), and the inner embedded cylinder (10) is of a stepped cylindrical structure.

6. The die of claim 5 for internal stub bar extraction of a cylindrical injection molded part, wherein: and a temperature sensor (11) is arranged in the inner embedded cylinder (10).