CN217944149U - Injection mold suitable for solenoid valve class injection moulding product little post structure - Google Patents

Abstract

The utility model provides an injection mold suitable for little post structure of solenoid valve class injection moulding product, relate to injection mold's technical field, including first mold insert, second mold insert and third mold insert, seted up two first flow path half holes on the first mold insert, second flow path half hole has been seted up to one side of second mold insert, third flow path half hole has been seted up to the opposite side of second mold insert, fourth flow path half hole has been seted up on the third mold insert, first flow path half hole is assembled with second flow path half hole and is flowed the way hole, third flow path half hole is assembled with fourth flow path half hole and is flowed the way hole, the exhaust duct group that is used for exhausting and sets up along second mold insert length direction is all seted up to the both sides of second mold insert, the flow path hole is linked together with the exhaust duct group. The air exhaust groove group for exhausting air can exhaust air during injection molding, compressed air cannot be formed in the flow channel hole, so that the small column of the small column structure after molding can meet the size requirement, and the supporting bearing sleeve can better support the bearing sleeve and meet the supporting requirement.

Description

Injection mold suitable for solenoid valve class injection moulding product little post structure

Technical Field

The utility model relates to an injection mold's technical field particularly, relates to an injection mold suitable for little post structure of solenoid valve class injection moulding product.

Background

At present, a sub-part type injection molding product with a type of electromagnetic valve comprises a body and an interface, wherein one end of the body is connected with the interface, and the body and the interface are integrally arranged; the body is provided with a placing groove, and a small column structure is arranged at the middle position inside the placing groove. The injection molding product of the sub-part of the electromagnetic valve is formed by injection molding of a class of injection molds, each class of injection molds comprises a body injection mold part of an injection molding body, an interface injection mold part of an injection molding interface and a small column sub-mold injection molding part of an injection molding small column sub-structure, and the small column sub-mold injection molding part is located in the center of the product injection mold part. According to the electromagnetic induction principle, the influence of the air gap on the magnetic induction intensity is a very important parameter, and the small column substructure is a structure for assembly and is used for supporting the bearing sleeve and ensuring that the air gap is within a design range. The small column substructure comprises four small columns, and has higher requirements on the height and the profile degree of the four small columns during molding, and has higher requirements on the processing consistency of parts of an injection mold.

The existing mold for the injection molding small column structure is integrally formed by the insert and is not provided with an exhaust groove, gas cannot be discharged from the injection molding mold completely during injection molding, the size of the injection molded small column is small, the bearing sleeve for supporting the injection molding small column cannot shake inside, the assembled small column cannot play a role in supporting the injection molding small column, and the test cannot be passed.

SUMMERY OF THE UTILITY MODEL

The utility model provides a problem be that the post size of moulding plastics out is on the small side, and the bearing housing that leads to supporting rocks inside, leads to the effect of unable performance "support" after the assembly.

For solving the problem, the utility model provides an injection mold suitable for solenoid valve class injection moulding product little post structure, including first mold insert, second mold insert and third mold insert, the medial surface of first mold insert with one side lock concatenation of second mold insert, the medial surface of third mold insert with the opposite side lock concatenation of second mold insert, two first runner half holes have been seted up to the inside wall upper end of first mold insert at interval, two second runner half holes have been seted up to the lateral wall upper end that second mold insert is relative with first mold insert at interval, the second mold insert with two third runner half holes have been seted up to the lateral wall upper end that the third mold insert is relative, two fourth runner half holes have been seted up to the inside wall upper end of third mold insert at interval, first runner half holes with a set of flow path hole is pieced into to second runner half hole, third runner half hole with a set of flow path hole is pieced into a set of flow path hole, the flow path hole is used for trickling the liquid of moulding plastics, first mold insert with reach between the second mold insert with the second runner half hole is pieced into a set of exhaust passageway and the corresponding exhaust passageway lower extreme that just corresponding exhaust passageway group is linked together.

In this scheme, can be so that the gas outgoing when moulding plastics through the exhaust passage group that sets up exhaust gas, can not form compressed air in the runner hole and the liquid of moulding plastics can not mould plastics into the runner hole completely, can be so that the post of post substructure can reach the dimensional requirement after the shaping, and better support bearing housing can satisfy the support requirement, also can pass through the test.

Preferably, the first insert and the third insert are both detachably connected to the second insert.

In this scheme, can make exhaust passage group of processing more easily through setting up first mold insert, second mold insert and the third mold insert that can dismantle.

Preferably, each exhaust channel group includes a first exhaust channel and a second exhaust channel, the second exhaust channel is communicated with the first exhaust channel, the second exhaust channel is located at the lower side of the first exhaust channel, the first exhaust channel is located at the lower side of the channel hole, each channel hole is communicated with the first exhaust channel, each first exhaust channel and each second exhaust channel penetrate through the left side and the right side of the second insert, and the width of the first exhaust channel is smaller than that of the second exhaust channel.

In the scheme, the first exhaust channel and the second exhaust channel are arranged to exhaust gas in the die and impurities, and the first exhaust channel can prevent burrs; the impurities inside the second exhaust passage can enter the first exhaust passage, and after the forming is finished, the operators process the impurities in the second exhaust passage together.

Further preferably, when the first insert or the third insert is connected to the second insert, the first exhaust passage is formed between the inner side wall of the first insert or the third insert and the first exhaust groove, and the second exhaust passage is formed between the inner side wall of the first insert or the third insert and the second exhaust groove.

As a further preference, the depth of the first exhaust passage is 0.005mm.

As a further preference, the depth of the second exhaust passage is 0.2mm.

Preferably, the first insert is provided with a first connecting hole, the second insert is provided with a second connecting hole, the third insert is provided with a third connecting hole, the first connecting hole, the second connecting hole and the third connecting hole are connected and commonly used for penetrating a pin shaft, and the pin shaft connects the first insert, the second insert and the third insert.

Further preferably, the first connection hole, the second connection hole, and the third connection hole are concentrically arranged.

In this scheme, through setting up the concentric three connecting hole that sets up and round pin axle can be more convenient dismantlement and installation first mold insert, second mold insert and third mold insert.

Drawings

FIG. 1 is a schematic structural view of the novel injection mold suitable for injection products such as solenoid valves of the present invention;

FIG. 2 is a schematic diagram of an explosion structure of the novel injection mold suitable for injection products of solenoid valves of the present invention;

fig. 3 is the structural schematic diagram of the second mold insert of the novel injection mold suitable for the injection products of solenoid valves.

Description of the reference numerals: 1. a first insert; 11. a first connection hole; 12. a first flow channel half bore; 2. a second insert; 21. a second exhaust passage; 22. a first exhaust passage; 23. a flow passage hole; 24. a second connection hole; 25. a second flow passage half bore; 26. a third flow channel half-bore; 27. a first exhaust groove; 28. a second exhaust groove; 3. a third insert; 31. a third connection hole; 32. a fourth runner half bore; a. an inner side wall of the first insert; b. the inner side wall of the third insert; h. a depth of the first exhaust passage; H. the depth of the second exhaust passage.

Detailed Description

In order to make the aforementioned objects, features and advantages of the present invention more comprehensible, embodiments accompanied with figures are described in detail below.

The utility model provides an injection mold suitable for solenoid valve class injection moulding product little post structure, including first mold insert 1, second mold insert 2 and third mold insert 3, the medial surface an of first mold insert and the concatenation of one side lock of second mold insert 2, the medial surface b of third mold insert and the concatenation of the opposite side lock of second mold insert 2, two first runner half-holes 12 have been seted up to the inside wall upper end of first mold insert 1 at interval, two second runner half-holes 25 have been seted up to the lateral wall upper end that second mold insert 2 and first mold insert 1 are relative at interval, two third runner half-holes 26 have been seted up to the lateral wall upper end that second mold insert 2 and third mold insert 3 are relative, two fourth runner half-holes 32 have been seted up to the inside wall upper end of third mold insert 3 at interval, a set of runner half-holes 23 have been assembled with second runner half-holes 25 to first runner half-holes 12, a set of runner holes 23 is assembled with fourth runner half-holes 32, third runner half-holes 26 and fourth runner half-holes 32 assemble a set of runner half-holes 23, runner holes 23 are used for trickle injection moulding liquid, reach between first mold insert 1 and the second mold insert 2 and the corresponding runner of the lateral wall that the exhaust runner that sets up all be used for exhaust runner 2 of exhaust runner that sets up between second mold insert 2, and exhaust the corresponding runner that exhaust passageway 23 is linked together, the exhaust passageway sets up, and exhaust runner that exhaust runner is linked together.

The first insert 1 and the third insert 3 are detachably connected to the second insert 2. In this embodiment, the number of the flow passage holes 23 is four corresponding to the number of the small pillars, each flow passage hole 23 is used for injection molding of one small pillar, when injection molding is performed, injection molding liquid enters from the flow passage hole 23 to be injected into the small pillars, and gas and some impurities generated by injection molding are discharged through the exhaust passage group, so that the molded small pillars can meet the support requirement. Wherein, the diameters and the depths of the four flow passage holes 23 are the same, and the sizes of the small columns after molding are consistent. When the first insert 1, the third insert 3 and the second insert 2 are disassembled, the runner hole 23 is disassembled into runner half holes, and after the runner half holes are assembled into the runner hole 23, the injection molding liquid can flow more conveniently.

Through setting up exhaust passage group of exhaust gas can be so that gas outgoing when moulding plastics, can not form compressed air in runner hole 23, the influent stream way hole 23 that moulds plastics that the liquid of moulding plastics can be complete in, can be so that the post of post substructure can reach dimensional requirement after the shaping like this, better support bearing housing can satisfy the support requirement, also can pass through the test. The provision of the removable first, second and third inserts 1, 2, 3 may make it easier to machine the set of exhaust channels.

Further, as a preferred embodiment, each exhaust passage group includes a first exhaust passage 22 and a second exhaust passage 21, the second exhaust passage 21 is located at a lower side of the first exhaust passage 22, and the second exhaust passage 21 communicates with the first exhaust passage 22. The passage holes 23 are located on the upper side of the first exhaust passage 22, and each passage hole 23 communicates with the first exhaust passage 22. Each of the first exhaust passages 22 and each of the second exhaust passages 21 penetrate the left and right sides of the second insert 2, and the width of the first exhaust passage 22 is smaller than that of the second exhaust passage 21. The depth of the first exhaust passage 22 is 0.005mm. And a first exhaust groove 27 and a second exhaust groove 28 are formed in the side walls of the two sides of the second insert 2, when the first insert 1 or the third insert 3 is connected with the second insert 2, a first exhaust channel 22 is formed between the inner side wall of the first insert 1 or the third insert 3 and the first exhaust groove 27, and a second exhaust channel 21 is formed between the inner side wall of the first insert 1 and the inner side wall of the third insert 3 and the second exhaust groove 28. In this embodiment, the depth of the second exhaust channel 21 is greater than the depth of the first exhaust channel 22, the depth of the second exhaust channel 21 is about 0.2mm, the depth of the first exhaust channel 22 is about 0.005mm, and the injection liquid contains a part of glass fibers in a viscous state, so that the injection liquid cannot enter the first exhaust channel 22 from the runner hole 23 and cannot block the first exhaust channel 22, the second exhaust channel 21 and the first exhaust channel 22 both penetrate through the left side and the right side of the second insert 2 and are communicated with the outside, and during injection molding, generated gas and a part of fine impurities enter the first exhaust channel 22 through the runner hole 23 and then enter the second exhaust channel 21 to be discharged outside a mold. Through setting up first exhaust passage 22 and second exhaust passage 21 can discharge the inside gas of mould and impurity, can also prevent the production of deckle edge through setting up first exhaust passage 22. The impurities inside can enter the second exhaust passage 21 through the first exhaust passage 22, and after the molding is finished, the operator can treat the impurities in the second exhaust passage 21 together.

Further, as a preferred embodiment, the first mold insert 1 has a first connection hole 11, the second mold insert 2 has a second connection hole 24, the third mold insert 3 has a third connection hole 31, and the first connection hole 11, the second connection hole 24 and the third connection hole 31 are connected to commonly penetrate a pin, and the pin connects the first mold insert 1, the second mold insert 2 and the third mold insert 3. The first connection hole 11, the second connection hole 24, and the third connection hole 31 are concentrically disposed. The first insert 1, the second insert 2 and the third insert 3 can be more conveniently disassembled and assembled by arranging three concentric connecting holes and a pin shaft. In the embodiment, chamfers are arranged on two sides of one end, close to the second insert 2, of the first insert 1 along the height direction of the first insert 1; chamfers are arranged on two sides of each end of the second insert 2, the chamfers are arranged along the height direction of the second insert 2, and the chamfers are arranged from the inner wall position of the upper end of the second exhaust channel 21 to one end, far away from the flow channel hole 23, of the second insert 2; and two sides of one end, close to the second insert 2, of the third insert 3 are also provided with chamfers, and the chamfers are used for facilitating installation of the first insert 1, the second insert 2 and the third insert 3.

Although the present disclosure has been described above, the scope of the present disclosure is not limited thereto. Those skilled in the art can make various changes and modifications without departing from the spirit and scope of the present disclosure, and such changes and modifications will fall within the scope of the present invention.

Claims (8)

1. The utility model provides an injection mold suitable for little post structure of solenoid valve class injection moulding product which characterized in that: the mold comprises a first mold insert (1), a second mold insert (2) and a third mold insert (3), wherein the inner side face (a) of the first mold insert is buckled and spliced with one side of the second mold insert (2), the inner side face (b) of the third mold insert is buckled and spliced with the other side of the second mold insert (2), two first flow passage half holes (12) are formed in the upper end of the inner side wall of the first mold insert (1) at intervals, two second flow passage half holes (25) are formed in the upper end of the side wall, opposite to the first mold insert (1), of the second mold insert (2) at intervals, two third flow passage half holes (26) are formed in the upper end of the side wall, opposite to the third mold insert (3), of the second mold insert (2), two fourth runner half holes (32) are formed in the upper end of the inner side wall of the third insert (3) at intervals, a group of runner holes (23) are formed by splicing the first runner half hole (12) and the second runner half hole (25), a group of runner holes (23) are formed by splicing the third runner half hole (26) and the fourth runner half hole (32), the runner holes (23) are used for flowing injection molding liquid, exhaust channel groups for exhausting are formed between the first insert (1) and the second insert (2) and between the third insert (3) and the second insert (2), and the exhaust channel groups transversely penetrate through the corresponding side wall of the second insert (2), and the lower ends of the flow passage holes (23) are communicated with the corresponding exhaust passage groups.

2. The injection mold suitable for the small pillar structure of the injection product of the electromagnetic valve according to claim 1, wherein: the first insert (1) and the third insert (3) are detachably connected with the second insert (2).

3. The injection mold suitable for the small pillar structure of the injection product of the electromagnetic valve according to claim 1, wherein: each exhaust channel group comprises a first exhaust channel (22) and a second exhaust channel (21), the second exhaust channel (21) is communicated with the first exhaust channel (22), the second exhaust channel (21) is located on the lower side of the first exhaust channel (22), the first exhaust channel (22) is located on the lower side of the runner hole (23), each runner hole (23) is communicated with the first exhaust channel (22), each first exhaust channel (22) and each second exhaust channel (21) penetrate through the left side and the right side of the second insert (2), and the width of the first exhaust channel (22) is smaller than that of the second exhaust channel (21).

4. The injection mold suitable for the small pillar structure of the injection product of the solenoid valve as claimed in claim 3, wherein: first exhaust groove (27) and second exhaust groove (28) have been seted up on the both sides lateral wall of second mold insert (2), work as first mold insert (1) or third mold insert (3) with when second mold insert (2) are connected, first mold insert (1) or the inside wall of third mold insert (3) with form between first exhaust groove (27) first exhaust passageway (22), first mold insert (1) with the inside wall of third mold insert (3) with form between second exhaust groove (28) second exhaust passageway (21).

5. The injection mold suitable for the small pillar structure of the injection product of the solenoid valve as claimed in claim 3, wherein: the depth of the first exhaust channel (22) is 0.005mm.

6. The injection mold suitable for the small pillar structure of the injection product of the solenoid valve as claimed in claim 3, wherein: the depth of the second exhaust passage (21) is 0.2mm.

7. The injection mold suitable for the small pillar structure of the injection product of the electromagnetic valve according to claim 1, wherein: first connecting hole (11) have been seted up on first mold insert (1), second connecting hole (24) have been seted up on second mold insert (2), third connecting hole (31) have been seted up on third mold insert (3), just first connecting hole (11) second connecting hole (24) reach third connecting hole (31) link to each other and are used for wearing to establish the round pin axle, just the round pin axle will first mold insert (1) second mold insert (2) reach third mold insert (3) are connected.

8. The injection mold suitable for the small pillar structure of the injection product of the solenoid valve as claimed in claim 7, wherein: the first connection hole (11), the second connection hole (24), and the third connection hole (31) are concentrically arranged.

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