CN214448206U - Die assembly - Google Patents

Abstract

The utility model discloses a mold assembly, it includes the B board and is located the A board of B board upside, the A board is piled with the B board and is set up, accept the chamber under the upper surface undercut of B board forms, the chamber is acceptd on the lower surface undercut of A board forms, accept the intracavity down and be equipped with lower mould benevolence, on accept the intracavity and be equipped with mould benevolence, form the die cavity behind lower mould benevolence and the last mould benevolence compound die, mold assembly still includes the bottom plate, support piece and movable plate subassembly, support piece supports between bottom plate and B board, movable plate subassembly is located between bottom plate and the B board and butt in the bottom plate, mold assembly still includes thimble and thimble seat subassembly, the lower tip of thimble is fixed in the movable plate subassembly, the upper end position of thimble is in lower mould benevolence.

Description

Die assembly

Technical Field

The utility model relates to a field of moulding plastics.

Background

The injection molding part is generally composed of hardware used for conducting electricity and a plastic shell wrapped on the outer surface of the hardware, and in the process of producing the injection molding part, the hardware is usually installed in a mold firstly for positioning and then injection molding of the shell is carried out.

In the high-temperature injection mold in the prior art, because the size of an injection molding part is small, the ejector pins with enough large sizes cannot be adopted due to space limitation, so that the strength of the ejector pins is small, and the ejector pins with small sizes and small strength cannot avoid the influence of high-temperature deformation, thereby challenging the production stability of a one-mold multi-cavity mold.

In view of this, the utility model provides a novel mould subassembly.

SUMMERY OF THE UTILITY MODEL

Not enough to prior art, the utility model aims at providing a better mould subassembly of production stability and production continuation.

The utility model discloses a following technical scheme realizes:

a mould component comprises a B plate and an A plate positioned on the upper side of the B plate, the A plate and the B plate are stacked, the upper surface of the plate B is sunken downwards to form a lower containing cavity, the lower surface of the plate A is sunken upwards to form an upper containing cavity, a lower die core is arranged in the lower accommodating cavity, an upper die core is arranged in the upper accommodating cavity, the lower die core and the upper die core are assembled to form a die cavity, the mold assembly further comprises a bottom plate, a support member and a moving plate assembly, the support member is supported between the bottom plate and the B plate, the moving plate assembly is positioned between the bottom plate and the B plate and is abutted against the bottom plate, the mould assembly also comprises a thimble and a thimble seat assembly, the lower end of the ejector pin is fixed on the ejector pin seat assembly, the lower end of the ejector pin seat assembly is fixed on the moving plate assembly, and the upper end of the ejector pin is located in the lower die core.

Further, the thimble seat subassembly includes first thimble seat, second thimble seat and pin, first thimble seat is located second thimble seat downside just the lower tip of first thimble seat is fixed in remove the board subassembly, the pin will first thimble seat with the second thimble seat is together fixed.

Furthermore, a stopping portion is formed inside the second thimble seat, the lower end portion of the thimble is in an L shape, the stopping portion is matched with the lower end portion of the thimble, and the bottom surface of the lower end portion of the thimble abuts against the top surface of the first thimble seat.

Furthermore, the die assembly further comprises a fixing block arranged on the lower die core, the lower die core is provided with an installation cavity with a downward opening, the fixing block is arranged in the installation cavity, the fixing block is provided with a first through groove which is communicated along the vertical direction, and the ejector pin penetrates through the first through groove.

Furthermore, the lower die core is provided with a second through groove which is communicated in the vertical direction, the die assembly further comprises a first fixing plate and a second fixing plate which are positioned in the second through groove and arranged in parallel, a terminal is fixed between the first fixing plate and the second fixing plate, and the terminal extends into the die cavity.

Furthermore, the ejector pins are respectively arranged on one side of the first fixing plate, which is far away from the terminal, and one side of the second fixing plate, which is far away from the terminal.

Furthermore, the end surface of the upper end part of the thimble is flush with the top surface of the lower die core.

Furthermore, the die assembly further comprises a guide sleeve which is positioned on the lower side of the lower die core and fixed on the lower die core, the guide sleeve is provided with a third through groove which is communicated along the vertical direction, and at least part of the thimble seat assembly is accommodated in the third through groove and can move along the third through groove.

Further, the moving plate assembly comprises a first moving plate and a second moving plate, the first moving plate and the second moving plate are stacked up and down, the first moving plate is abutted against the bottom plate downwards, the second moving plate is abutted against the first moving plate downwards, and the first moving plate and the second moving plate can move up and down between the plate B and the bottom plate.

Furthermore, the mold assembly is also provided with a runner for communicating the mold cavity with the outside and forming an injection molding opening, and hot-melt plastic is injected into the runner through the injection molding opening and flows into the mold cavity to be cooled to form an injection molding piece.

Compared with the prior art, the beneficial effects of the utility model are that: the utility model discloses in, reduce the thimble height through setting up thimble seat subassembly, thimble seat subassembly includes first thimble seat, second thimble seat and pin, is in the same place first thimble seat and second thimble seat are fixed through the pin, and the lower tip of thimble is fixed in between first thimble seat and the second thimble seat, and the thimble seat subassembly outside sets up the guide pin bushing and guarantees that thimble seat subassembly steadily slides to guarantee the stability and the continuation of production.

Drawings

FIG. 1 is a perspective view of an injection molded article according to the present invention;

FIG. 2 is a perspective view of the injection molded part of FIG. 1 from another perspective;

FIG. 3 is a perspective view of the mold assembly of the present invention;

FIG. 4 is an enlarged view of circled portion A of FIG. 3;

FIG. 5 is a partial block diagram of the mold assembly shown in FIG. 3;

FIG. 6 is an enlarged view of circled portion B of FIG. 5;

FIG. 7 is a partial block diagram of the mold assembly shown in FIG. 5;

FIG. 8 is an enlarged view of circled portion C of FIG. 7;

FIG. 9 is a partial block diagram of the mold assembly shown in FIG. 7;

FIG. 10 is a partial block diagram of the mold assembly shown in FIG. 9;

FIG. 11 is a partial block diagram of the mold assembly shown in FIG. 10;

fig. 12 is an exploded perspective view of the mold assembly shown in fig. 11.

Detailed Description

The present invention will be described in detail with reference to the accompanying drawings and embodiments.

As shown in fig. 1 and 2, an injection molding member 10 includes a plastic body 11 and four terminals 12 embedded in the plastic body 11, the plastic body 11 includes a body portion 13 and an additional portion 14 arranged along a longitudinal direction, the additional portion 14 forms a receiving cavity 15, the four terminals 12 extend along the longitudinal direction and are arranged in a row along a transverse direction, one end of each terminal 12 is exposed out of the body portion 13, and the other end of each terminal 12 is received in the receiving cavity 15.

Referring to fig. 3 to 12, the mold assembly 20 of the present invention includes a supporting member 21, a bottom plate 22 located at a lower side of the supporting member 21, a B plate 23 located at an upper side of the supporting member 21, and an a plate (not shown) located at an upper side of the B plate 23, wherein the supporting member 21 is supported between the bottom plate 22 and the B plate 23, and the a plate and the B plate 23 are stacked. The surface of the B plate 23 contacting the a plate is recessed downward to form a lower receiving cavity, that is, the upper surface of the B plate 23 is recessed downward to form a lower receiving cavity. The surface of the a plate in contact with the B plate 23 is recessed upward to form an upper housing chamber, that is, the lower surface of the a plate is recessed upward to form an upper housing chamber. A lower mold core 24 is arranged in the lower containing cavity, an upper mold core is arranged in the upper containing cavity, and the lower mold core 24 in the lower containing cavity of the B plate 23 and the upper mold core in the upper containing cavity of the A plate can be opened or closed. After the lower mold core 24 and the upper mold core are closed, a mold cavity is formed between the lower mold core 24 and the upper mold core. The mold assembly 20 further includes a runner (not shown) for communicating the cavity with the outside and a sprue (not shown), and the injection-molded part 10 is formed by injecting hot-melt plastic into the runner through the sprue and into the cavity, and then cooling the hot-melt plastic. The mold assembly 20 further includes a moving plate assembly disposed between the bottom plate 22 and the B plate 23, the moving plate assembly includes a first moving plate 25 and a second moving plate 26, the first moving plate 25 and the second moving plate 26 are stacked in an up-down direction, the first moving plate 25 abuts against the bottom plate 22 downward, the second moving plate 26 abuts against the first moving plate 25 downward, and the first moving plate 25 and the second moving plate 26 can move between the B plate 23 and the bottom plate 22 in the up-down direction.

The mold assembly 20 further includes a fixing block 27 mounted on the lower mold core 24, the lower mold core 24 is provided with a mounting cavity (not numbered) with a downward opening, the fixing block 27 is mounted in the mounting cavity, and the fixing block 27 is provided with a plurality of first through grooves (not numbered) penetrating in the vertical direction. The lower mold core 24 is provided with a second through groove (not numbered) which is through along the vertical direction, the mold assembly 20 further comprises a first fixing plate 28 and a second fixing plate 29 which are positioned in the second through groove and are arranged in parallel, the first fixing plate 28 and the second fixing plate 29 extend along the vertical direction, four terminals 12 which are arranged in a row along the horizontal direction are fixed between the first fixing plate 28 and the second fixing plate 29 and extend along the vertical direction, the four terminals 12 all extend upwards to exceed the top surfaces of the first fixing plate 28 and the second fixing plate 29 and the top surface of the lower mold core 24, namely, the four terminals 12 all extend upwards to enter the mold cavity. The mold assembly 20 further includes six ejector pins 30 located on two sides of the first fixing plate 28 and the second fixing plate 29, the six ejector pins 30 extend in the vertical direction, three ejector pins 30 of the six ejector pins 30 are disposed on one side of the first fixing plate 28 away from the four terminals 12, the other three ejector pins 30 are disposed on one side of the second fixing plate 29 away from the four terminals 12, end surfaces of upper end portions of the six ejector pins 30 are flush with the top surface of the lower mold core 24, lower end portions of the six ejector pins 30 extend beyond bottom surfaces of the first fixing plate 28 and the second fixing plate 29 and extend downward after correspondingly penetrating through the first through grooves of the fixing block 27, that is, the six ejector pins 30 extend downward beyond bottom surfaces of the fixing block 27 and the lower mold core 24. The six pins 30 are used for clamping the first fixing plate 28 and the second fixing plate 29, thereby further clamping the four terminals 12, so that the four terminals 12 are stably fixed between the first fixing plate 28 and the second fixing plate 29.

The mold assembly 20 further includes a guide sleeve 40 located under the lower mold core 24 and the fixing block 27 and fixed to the lower mold core 24, wherein the guide sleeve 40 is provided with a third through groove 41 penetrating in the vertical direction. The mold assembly 20 further includes a pin holder assembly 50 partially received in the third through groove 41 of the guide sleeve 40, and the pin holder assembly 50 is movable up and down along the third through groove 41. The ejector pin base assembly 50 comprises a first ejector pin base 51 and a second ejector pin base 52 which are arranged in the vertical direction, the first ejector pin base 51 is located on the lower side of the second ejector pin base 52, and the first ejector pin base 51 and the second ejector pin base 52 are fixed together through a pin 53. The lower ends of the six thimbles 30 are all L-shaped, a stopping portion 521 matched with the lower ends of the six thimbles 30 is formed in the second thimble seat 52, and the stopping portion 521 is matched with the L-shaped lower ends of the six thimbles 30, so that the six thimbles 30 cannot move upwards relative to the second thimble seat 52, and the bottom surfaces of the lower ends of the six thimbles 30 abut against the top surface of the first thimble seat 51. The lower end of the first thimble seat 51 is fixed to the first moving plate 25 and the second moving plate 26. When the first moving plate 25 and the second moving plate 26 move upward, the first moving plate 25 and the second moving plate 26 drive the thimble seat assembly 50 to move upward, that is, the thimble seat assembly 50 moves upward along the third through-groove 41 of the guide sleeve 40 under the drive of the first moving plate 25 and the second moving plate 26, so as to drive the six thimbles 30 to move upward.

The utility model discloses an assembly step of the partial subassembly of mould subassembly 20: (1) assembling the six ejector pins 30 and the second ejector pin base 52 together, (2) fixing the first ejector pin base 51 and the second ejector pin base 52 together through the pin 53 to form an ejector pin base assembly 50, (3) assembling the ejector pin base assembly 50 and the guide sleeve 40 together, (4) fixing the guide sleeve 40 to the lower die core 24, and (5) assembling the lower die core 24 to the B plate 23.

The utility model discloses in, reduce the thimble 30 height through setting up thimble seat subassembly 50, thimble seat subassembly 50 includes first thimble seat 51, second thimble seat 52 and pin 53, is together fixed with first thimble seat 51 and second thimble seat 52 through pin 53, and the lower tip of thimble 30 is fixed in between first thimble seat 51 and the second thimble seat 52, and the thimble seat subassembly 50 outside sets up guide pin bushing 40 and guarantees the steady slip of thimble seat subassembly 50 to guarantee the stability and the continuation of production.

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 (10)

1. A die assembly comprises a plate B and a plate A positioned on the upper side of the plate B, the plate A and the plate B are stacked, the upper surface of the plate B is sunken downwards to form a lower accommodating cavity, the lower surface of the plate A is sunken upwards to form an upper accommodating cavity, a lower die core is arranged in the lower accommodating cavity, an upper die core is arranged in the upper accommodating cavity, the lower die core and the upper die core are assembled to form a die cavity, the die assembly further comprises a bottom plate, a supporting piece and a moving plate assembly, the supporting piece is supported between the bottom plate and the plate B, the moving plate assembly is positioned between the bottom plate and the plate B and is abutted against the bottom plate, the die assembly is characterized by further comprising ejector pins and an ejector pin seat assembly, the lower end parts of the ejector pins are fixed on the ejector pin seat assembly, and the lower end parts of the ejector pin seat assembly are fixed on the moving plate assembly, the upper end part of the thimble is positioned in the lower die core.

2. The mold assembly of claim 1, wherein the ejector seat assembly comprises a first ejector seat, a second ejector seat, and a pin, the first ejector seat is located on a lower side of the second ejector seat and a lower end portion of the first ejector seat is fixed to the moving plate assembly, and the pin fixes the first ejector seat and the second ejector seat together.

3. The mold assembly according to claim 2, wherein a stopper portion is formed inside the second thimble seat, the lower end portion of the thimble is L-shaped, the stopper portion is engaged with the lower end portion of the thimble, and a bottom surface of the lower end portion of the thimble abuts against a top surface of the first thimble seat.

4. The mold assembly according to claim 1, further comprising a fixing block mounted on the lower mold core, wherein the lower mold core is provided with a mounting cavity with a downward opening, the fixing block is mounted in the mounting cavity, the fixing block is provided with a first through groove penetrating in an up-down direction, and the ejector pin penetrates through the first through groove.

5. The mold assembly of claim 1, wherein the lower mold core has a second through groove extending therethrough in a vertical direction, the mold assembly further comprising a first fixing plate and a second fixing plate disposed in the second through groove and parallel to each other, a terminal being fixed between the first fixing plate and the second fixing plate, the terminal extending into the mold cavity.

6. The mold assembly of claim 5, wherein the ejector pins are disposed on a side of the first retaining plate away from the terminal and a side of the second retaining plate away from the terminal, respectively.

7. The mold assembly of claim 6, wherein an end surface of the upper end of the ejector pin is flush with the top surface of the lower core.

8. The mold assembly of claim 1, further comprising a guide sleeve positioned under the lower mold core and fixed to the lower mold core, wherein the guide sleeve is provided with a third through groove extending in the vertical direction, and the thimble seat assembly is at least partially received in the third through groove and is movable along the third through groove.

9. The mold assembly of claim 1, wherein the moving plate assembly comprises a first moving plate and a second moving plate, the first moving plate and the second moving plate are stacked in an up-down direction, the first moving plate abuts downward against the bottom plate, the second moving plate abuts downward against the first moving plate, and the first moving plate and the second moving plate are movable in an up-down direction between the B plate and the bottom plate.

10. The mold assembly of claim 1, further comprising a runner connecting the mold cavity to the outside and forming a gate, wherein the injection molded part is formed by injecting hot-melt plastic into the runner through the gate and into the mold cavity and cooling the hot-melt plastic.

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