CN213675254U

CN213675254U - Injection mold for pulling core by pushing and pressing

Info

Publication number: CN213675254U
Application number: CN202021895968.2U
Authority: CN
Inventors: 南基学
Original assignee: Yejia Optical Technology Guangdong Corp
Current assignee: Yejia Optical Technology Guangdong Corp
Priority date: 2020-09-03
Filing date: 2020-09-03
Publication date: 2021-07-13
Anticipated expiration: 2030-09-03

Abstract

The utility model provides an utilize and bulldoze injection mold of loosing core, including last mould, lower mould, the lower mould includes bedplate, first backup pad, second backup pad, lower bolster, mould benevolence down, be equipped with the die cavity in the mould benevolence, die cavity one end both sides all are equipped with the spout, be equipped with the subassembly of loosing core in the spout, form a cavity between first backup pad, the second backup pad, be equipped with in the cavity and bulldoze the subassembly. The utility model discloses an injection mold is applicable to the preparation one end and has the bulge to the bulge has the injection molding of through-hole, has set up and has bulldozed the subassembly and loose core the subassembly, and the structure is ingenious, need not to use cylinder drive slider, utilizes to bulldoze the pole drive slider and just can make to loose core and take out from the through-hole of injection molding, and it is ejecting with the injection molding that follow-up utilization thimble, and the drawing of patterns is efficient.

Description

Injection mold for pulling core by pushing and pressing

Technical Field

The utility model relates to an injection moulding technical field, concretely relates to utilize and bulldoze injection mold of loosing core.

Background

The injection molding product is a common daily product, and is widely applied to the fields of household products, medical equipment, building materials, sports equipment and the like due to the advantages of light weight, high strength, good durability, strong assembly and the like. In the manufacturing process of injection molding products, plastic materials in a molten state are generally uniformly stirred by a screw extruder at a certain temperature, then injected into an injection mold, molded in a cavity of the injection mold, cooled and solidified to obtain a molded injection molding product, and then the injection molding product is pushed down from the injection mold by an ejector pin.

For producing the injection molding part 9 shown in fig. 6, because one end of the injection molding part is provided with a protruding part and the protruding part is provided with a through hole, in order to facilitate demolding, the conventional means is used for manufacturing the injection molding part without the side hole by using a conventional injection mold and then manufacturing the through hole by using a subsequent drilling process, and the production efficiency of the means is extremely low.

SUMMERY OF THE UTILITY MODEL

To above problem, the utility model provides an utilize injection mold who bulldozes and loose core is applicable to preparation one end and has the bulge to the bulge has the injection molding of through-hole, has set up and has bulldozed the subassembly and loose core the subassembly, and the structure is ingenious, need not to use cylinder drive slider, utilizes to bulldoze the pole drive slider and just can make to loose core and take out from the through-hole of injection molding, and it is ejecting with the injection molding that follow-up utilization thimble, and the drawing of patterns is efficient.

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

an injection mold for pulling cores by pushing comprises an upper mold and a lower mold, wherein the upper mold comprises an upper seat plate, an upper base plate and an upper pressing plate which are sequentially arranged from top to bottom, an injection runner is further arranged in the upper mold, the lower mold comprises a lower seat plate, a first supporting plate and a second supporting plate which are fixed on two sides of the upper end of the lower seat plate, a lower base plate which is fixed on the upper ends of the first supporting plate and the second supporting plate, and a mold core which is fixed in the middle of the upper end of the lower base plate, a mold cavity is arranged in the mold core, the lower end of the injection runner is communicated with the mold cavity, two sides of one end of the mold cavity are both provided with chutes, core pulling assemblies are arranged in the chutes, each core pulling assembly comprises a slide block, a first spring which is connected with one end of the slide block, and a core pulling which, be equipped with in the cavity and bulldoze the subassembly, it includes the push pedal, connects to bulldoze the subassembly two of push pedal upper end bulldoze the pole, are located the thimble of push pedal upside, bulldoze the pole and include pole portion, connect inclined plane guide part, the connection of pole portion upper end are in the top of inclined plane guide part upper end, be equipped with the confession on the slider top, inclined plane guide part male rectangular hole, the thimble upper end is located the die cavity bottom, the thimble with the interval has between the push pedal.

Specifically, the lower backing plate is provided with an avoidance groove for the push rod to stretch up and down.

Specifically, the thimble comprises a head part, a cylindrical part connected to the lower end of the head part, and a bottom connected to the lower end of the cylindrical part, wherein a second spring is further sleeved on the outer side of the cylindrical part and is located between the lower base plate and the bottom.

Specifically, the spout both sides all are equipped with the inside groove, the slider both ends all be connected with inside groove matched with is spacing protruding.

Specifically, the lower bolster both sides are fixed with into water interface, play water interface respectively, the interface of intaking with be connected with the pipeline between the interface of going out water, the pipeline is around establishing the mould benevolence outside.

Specifically, the upper end of the injection molding runner is provided with an injection molding opening.

The utility model has the advantages that:

first, the utility model discloses an injection mold, be applicable to the preparation one end and have the bulge, and the bulge has the injection molding of through-hole, set up and bulldoze the subassembly and loose core the subassembly, the structure is ingenious, need not to use cylinder drive slider, utilize the push pedal to promote and bulldoze the pole and move up, utilize the cooperation between the inclined plane guide part of bulldozing the pole and the slider, thereby drive the slider and slide to the outside along the spout, make the loose core take out from the through-hole of injection molding, follow-up utilization push pedal promotes the thimble and moves up, the thimble is ejecting out the injection molding in the die cavity, can accomplish the drawing of patterns;

and secondly, a water inlet interface and a water outlet interface are respectively fixed on two sides of the lower base plate, a pipeline is connected between the water inlet interface and the water outlet interface, the pipeline is wound on the outer side of the mold core, and heat around the mold core can be rapidly taken out by utilizing cold water flowing in the pipeline, so that the heat dissipation efficiency of the mold is improved.

Drawings

Fig. 1 is a perspective structure view of an injection mold for pulling core by pushing and pressing according to the present invention.

Fig. 2 is a cross-sectional view taken along the plane a-a in fig. 1.

Fig. 3 is a cross-sectional view taken along the plane B-B in fig. 1.

Fig. 4 is an exploded view of the injection mold for pulling core by pushing and pressing of the present invention.

Fig. 5 is a schematic structural view of the water inlet port, the water outlet port and the pipeline of the present invention.

Fig. 6 is a schematic structural diagram of an injection molding part prepared by using the injection mold of the present invention.

The reference signs are: the injection molding device comprises an upper die 1, an upper seat plate 11, an upper cushion plate 12, an upper pressing plate 13, a lower die 2, a lower seat plate 21, a first support plate 22, a second support plate 23, a lower cushion plate 24, a die core 25, a die cavity 251, a sliding groove 241, an injection molding runner 3, an injection molding port 31, a core pulling assembly 4, a sliding block 41, a rectangular hole 411, a first spring 42, a core pulling 43, a cavity 5, a pushing assembly 6, a pushing plate 61, a pushing rod 62, a rod part 621, an inclined plane guide part 622, a top 623, a thimble 63, a head 631, a cylindrical part 632, a bottom 633, a second spring 7, a water inlet connector 81, a water outlet connector 82, a pipeline 83 and.

Detailed Description

The present invention will be described in further detail with reference to the following examples and drawings, but the present invention is not limited thereto.

As shown in fig. 1-6:

an injection mold for pulling core by pushing and pressing comprises an upper mold 1 and a lower mold 2, wherein the upper mold 1 comprises an upper seat plate 11, an upper base plate 12 and an upper pressing plate 13 which are sequentially arranged from top to bottom, an injection runner 3 is also arranged in the upper mold 1, the lower mold 2 comprises a lower seat plate 21, a first support plate 22 and a second support plate 23 which are fixed on two sides of the upper end of the lower seat plate 21, a lower base plate 24 which is fixed on the upper end of the first support plate 22 and the second support plate 23, and a mold core 25 which is fixed in the middle of the upper end of the lower base plate 24, a mold cavity 251 is arranged in the mold core 25, the lower end of the injection runner 3 is communicated with the mold cavity 251, two sides of one end of the mold cavity 251 are respectively provided with a chute 241, a core pulling component 4 is arranged in the chute 241, the core pulling component 4 comprises a sliding block 41, a first spring 42 which is connected, the cavity 5 is internally provided with a pushing component 6, the pushing component 6 comprises a push plate 61, two pushing rods 62 connected to the upper end of the push plate 61, and a thimble 63 located on the upper side of the push plate 61, the pushing rods 62 comprise rod parts 621, inclined plane guide parts 622 connected to the upper ends of the rod parts 621, and top parts 623 connected to the upper ends of the inclined plane guide parts 622, a rectangular hole 411 for inserting the top parts 623 and the inclined plane guide parts 622 is formed in the slide block 41, the upper end of the thimble 63 is located at the bottom 633 of the cavity 251, and a space is reserved between.

Preferably, the lower bolster 24 is provided with an escape groove for vertically extending and contracting the push rod 62.

Preferably, the thimble 63 includes a head portion 631, a cylindrical portion 632 connected to a lower end of the head portion 631, and a bottom portion 633 connected to a lower end of the cylindrical portion 632, wherein the second spring 7 is further sleeved outside the cylindrical portion 632, and the second spring 7 is located between the lower pad 24 and the bottom portion 633.

Preferably, in order to prevent the sliding block 41 from separating from the sliding groove 241, inner grooves are formed on both sides of the sliding groove 241, and both ends of the sliding block 41 are connected with limit protrusions matched with the inner grooves.

Preferably, a water inlet port 81 and a water outlet port 82 are respectively fixed on two sides of the lower backing plate 24, a pipeline 83 is connected between the water inlet port 81 and the water outlet port 82, the pipeline 83 is wound on the outer side of the mold insert 25, the water inlet port 81 is connected with a water inlet pipe, the water outlet port 82 is connected with a water discharge pipe, after injection molding is completed, cold water is introduced into the pipeline 83 through the water inlet pipe, heat around the mold insert 25 can be rapidly taken out by utilizing cold water flowing in the pipeline 83, and the heat dissipation efficiency of the mold is improved.

Preferably, the injection runner 3 is provided with an injection port 31 at the upper end.

The demolding process is as follows:

after the upper die 1 and the lower die 2 are assembled, injection molding is carried out by an injection molding machine, and an injection molding part 9 is obtained in a cavity 251 after cooling; after the upper die 1 and the lower die 2 are opened, in the first stage, the driving device at the lower end of the push plate 61 is used for pushing the push plate 61 and the push rod 62 to move upwards, and in the process that the push rod 62 moves upwards, because one end of the inclined guide part 622 of the push rod 62 is provided with an inclined surface, the slide block 41 and the loose core 43 can be pushed to move outwards along the sliding groove 241, so that the loose core 43 is extracted from the through hole at one side of the injection molding part 9; in the second stage, the push plate 61 continues to move upwards, and the ejector pin 63 is pushed to move upwards in the process of moving the push plate 61 upwards, so that the ejector pin 63 pushes out the injection molded part 9 in the cavity 251, and the demolding procedure is completed.

The above embodiments only represent one embodiment of the present invention, and the description thereof is more specific and detailed, but not to be construed as limiting the scope of the present invention. It should be noted that, for those skilled in the art, without departing from the spirit of the present invention, several variations and modifications can be made, which are within the scope of the present invention. Therefore, the protection scope of the present invention should be subject to the appended claims.

Claims

1. An injection mold for pulling core by pushing and pressing comprises an upper mold (1) and a lower mold (2), wherein the upper mold (1) comprises an upper seat plate (11), an upper backing plate (12) and an upper pressing plate (13) which are sequentially arranged from top to bottom, an injection runner (3) is further arranged in the upper mold (1), the lower mold (2) comprises a lower seat plate (21), a first supporting plate (22) and a second supporting plate (23) which are fixed on two sides of the upper end of the lower seat plate (21), a lower backing plate (24) which is fixed on the upper ends of the first supporting plate (22) and the second supporting plate (23), and a mold core (25) which is fixed in the middle of the upper end of the lower backing plate (24), a mold cavity (251) is arranged in the mold core (25), the lower end of the injection runner (3) is communicated with the mold cavity (251), the injection mold core (241) is characterized in that two sides of one, loose core subassembly (4) are including slider (41), connection first spring (42), the connection of slider (41) one end are in loose core (43) of slider (41) other end, two loose core (43) terminal surface is inconsistent, form a cavity (5) between first backup pad (22), second backup pad (23), be equipped with in cavity (5) and bulldoze subassembly (6), bulldoze subassembly (6) including push pedal (61), connect two bulldoze pole (62) of push pedal (61) upper end, be located thimble (63) of push pedal (61) upside, bulldoze pole (62) including pole portion (621), connect inclined plane guide part (622), the connection of pole portion (621) upper end inclined plane guide part (622) top (623), be equipped with the confession on slider (41) top (623), The upper end of the thimble (63) is positioned at the bottom (633) of the cavity (251), and a space is reserved between the thimble (63) and the push plate (61).

2. An injection mold for pulling cores by pushing according to claim 1, wherein the lower backing plate (24) is provided with an escape groove for the pushing rod (62) to extend and retract up and down.

3. The injection mold for pulling cores by pushing as recited in claim 1, wherein the thimble (63) comprises a head portion (631), a cylindrical portion (632) connected to a lower end of the head portion (631), and a bottom portion (633) connected to a lower end of the cylindrical portion (632), and a second spring (7) is further sleeved outside the cylindrical portion (632), wherein the second spring (7) is located between the lower backing plate (24) and the bottom portion (633).

4. The injection mold for pulling cores by pushing and pressing as claimed in claim 1, wherein inner grooves are formed on both sides of the sliding groove (241), and limiting protrusions matched with the inner grooves are connected to both ends of the sliding block (41).

5. The injection mold for pulling core by pushing and pressing according to claim 1, wherein a water inlet (81) and a water outlet (82) are respectively fixed on two sides of the lower backing plate (24), a pipeline (83) is connected between the water inlet (81) and the water outlet (82), and the pipeline (83) is wound on the outer side of the mold core (25).

6. An injection mold for pulling cores by pushing according to claim 1, characterized in that the injection runner (3) is provided with an injection port (31) at the upper end.