CN214239338U

CN214239338U - Large-area supporting rubber coating injection mold in metal part mold

Info

Publication number: CN214239338U
Application number: CN202022945190.8U
Authority: CN
Inventors: 戴柏名; 尹飞飞
Original assignee: Ruisheng New Energy Technology Guangdong Co ltd
Current assignee: Ruisheng New Energy Technology Guangdong Co ltd
Priority date: 2020-12-10
Filing date: 2020-12-10
Publication date: 2021-09-21
Anticipated expiration: 2030-12-10

Abstract

The utility model belongs to the technical field of injection molds, and particularly discloses an in-mold large-area supporting rubber coating injection mold for a metal piece, which comprises a movable mold and a fixed mold, wherein the movable mold and the fixed mold are assembled to form a cavity for accommodating the metal piece and injecting rubber coating, a support column is movably arranged on the movable mold in a penetrating way, extends into the cavity and abuts against a supporting rubber coating surface of the metal piece in the cavity; when the plastic injection action on the fixed die is finished and the injection molding pressure maintaining is carried out, the supporting column is far away from the supporting and plastic wrapping surface of the metal piece, and a plastic body partially wrapped on the metal piece is formed in the cavity. The utility model discloses a support rubber coating face of supporting the metalwork in the mould reduces metalwork rubber coating in-process and warp, does not produce the support vestige simultaneously.

Description

Large-area supporting rubber coating injection mold in metal part mold

Technical Field

The utility model belongs to the technical field of injection mold, especially, relate to a large tracts of land support rubber coating injection mold in mould of metalwork.

Background

Most of the existing in-mold insert processes in the injection molding industry are hardware, nuts and cylindrical hardware. Because the hardware materials such as copper materials, aluminum materials and the like are soft, the hardware materials are easy to deform in the process of injection molding and glue coating in the die cavity, especially hardware with large area (such as a new energy lithium battery electrode with the area of about 600 square millimeters and the thickness of about 2.5 mm), the deformation in the die is more serious, the thickness of the rubber coating of the product after injection molding is uneven, the assembly of the finished product is influenced, and the electrical properties of the product, such as electrical insulation, voltage resistance and the like, can not reach the customer standard directly.

Accordingly, the inventors have endeavored to design an injection mold to solve the above problems.

SUMMERY OF THE UTILITY MODEL

The utility model aims to provide a: the supporting rubber coating surface of the metal piece is supported in the mould, so that deformation of the metal piece in the rubber coating process is reduced, and no supporting trace is generated.

In order to achieve the above purpose, the utility model discloses the technical scheme who adopts is:

the in-mold large-area supporting rubber coating injection mold for the metal piece comprises a movable mold and a fixed mold, wherein the movable mold and the fixed mold are assembled to form a cavity for accommodating the metal piece and carrying out injection molding rubber coating;

when the plastic injection action on the fixed die is finished and the injection molding pressure maintaining is carried out, the supporting column is far away from the supporting and plastic wrapping surface of the metal piece, and a plastic body partially wrapped on the metal piece is formed in the cavity.

In the process of moulding plastics, the melt contracts because of the cooling, but because the screw rod will continue to move forward slowly, make the fuse-element in the material pipe continue to pour into the die cavity into to the needs (preventing the product shrink) of supplementary goods shrink, call for the pressurize, the product after the pressurize is not only produced more stably, can also adjust the size of product size, deformation such as weld line, sunken, overlap and warpage can not appear again, the utility model discloses utilize the injection pressurize to fill the breach that the support column withdrawed from forming, promptly, when the support column moves back to when the already rubber coating of metalwork is out of the plane, can form the support breach on the metalwork, utilize the pressurize of moulding plastics to supplement the breach that the support column withdrawed from forming.

As the utility model discloses the improvement of the mould internal large tracts of land support rubber coating injection mold of metalwork, the protruding supporting shoe that is equipped with of elasticity on the matched mould surface of cover half, the supporting shoe butt the portion that exposes of metalwork.

Although the portion that exposes of metalwork does not need the rubber coating, the softer metalwork of material still can produce certain deformation in the in-process high temperature of moulding plastics, influences the electrical contact performance of injection moulding product, consequently, the utility model discloses an elastic connection's supporting shoe supports the portion that exposes of metalwork, prevents the portion that exposes of metalwork and warp.

As the utility model discloses the improvement of the mould internal large tracts of land support rubber coating injection mold of metalwork, the support column level wear extremely in the movable mould benevolence of movable mould, the support column by hydro-cylinder drive butt on the movable mould or keep away from the support rubber coating face of metalwork.

As the utility model discloses the improvement of the mould internal large tracts of land support rubber coating injection mold of metalwork, the die cavity is used for acceping the support rubber coating face region of metalwork by three side core with movable mould benevolence encloses to establish and forms, it is three the side core slide set up in the recess of movable mould benevolence compound die surface and with the three different side slider of loosing core correspond fixed connection, it is three the side slider of loosing core slide set up in on the movable mould board of movable mould.

Because the plastic body side that forms behind the support rubber coating face rubber coating of metalwork has screw hole or recess or bulge, so the utility model discloses need adopt the side structure of loosing core.

As the utility model discloses the improvement of the mould internal large tracts of land support rubber coating injection mold of metalwork, the support column passes and is located the slider is loosed core to the side of the support rubber coating face side of metalwork, and be close to corresponding the side core, the hydro-cylinder is fixed in and corresponds on the slider is loosed core to the side.

As the utility model discloses the mould of metalwork supports rubber coating injection mold's an improvement, one of them by a large scale in the mould breach and adjacent another on the side core encloses and establishes formation the bulge of plastic body.

As the utility model discloses the mould of metalwork supports rubber coating injection mold in a large tracts of land in the mould improvement, at least one the side is loosed core and is equipped with the side on the slider and inlays the post, the side is inlayed the post and is passed the correspondence the side core extends the screwed hole of metalwork is downthehole or be close to the metalwork.

As the utility model discloses the mould of metalwork supports rubber coating injection mold in a large tracts of land in the mould improvement, at least one the side is loosed core the slider side and is equipped with the stopper, should incline loose core slider one end and correspond side core elastic connection, its other end pass through the slide bar with the stopper slides the butt.

As the utility model discloses the improvement of the mould internal large tracts of land support rubber coating injection mold of metalwork, be equipped with a owner on the cover half and water, the owner waters and forms two vertical sprues, two through a horizontal runner branch the sprue of sprue is located on the same injection moulding face of die cavity.

As the utility model discloses the improvement of the mould internal large tracts of land support rubber coating injection mold of metalwork, the sprue top is equipped with the spliced pole, the spliced pole is fixed in the cover half and its end extends in the cross gate.

Compared with the prior art, the utility model discloses support rubber coating injection mold in mould by a large scale of the mould of metalwork, support the support rubber coating face of metalwork through the support column that can withdraw from in the mould sets up, reduce metalwork rubber coating in-process and warp, prevent that the metalwork from moulding plastics rubber coating back meat thickness inhomogeneous, not only influence the finished product equipment, still directly lead to the electrical insulation of product, electrical properties such as withstand voltage can't reach customer standard, can't provide the safety guarantee for the consumer, and simultaneously, utilize the pressurize performance of moulding plastics, fill the breach that the support column withdrawed from, prevent to leave the support vestige on the plastic body.

Description of the drawings:

FIG. 1 is a cross-sectional view of an in-mold large area support encapsulated injection mold for metal parts of the present invention;

FIG. 2 is an enlarged view at A in FIG. 1;

figure 3 is another cross-sectional view of the in-mold large area support overmold for a metal article of the present invention;

FIG. 4 is a perspective view of the movable mold of the present invention;

FIG. 5 is an exploded perspective view of three side core-pulling mechanisms on the movable mold of the present invention;

FIG. 6 is a perspective enlarged view of the injection molded product of the present invention;

fig. 7 is a perspective enlarged view of the metal member of the present invention.

Illustration of the drawings:

1. the fixed die comprises a fixed die, 11, a fixed die base, 111, a main runner, 112, a connecting column, 12, a fixed die clamping plate, 13, a fixed die plate, 131, an inclined guide column, 132, a supporting block, 14, a fixed die core, 2, a movable die, 21, a movable die base, 22, an ejector pin push plate, 23, an ejector pin fixing plate, 24, a movable die plate, 241, a limiting block, 25, a movable die core, 3, a supporting mechanism, 31, a supporting column, 32, an oil cylinder, 4, a first side core-pulling slide block, 41, a first side core, 5, a second side core-pulling slide block, 51, a second side core, 6, a third side core-pulling slide block, 61, a third side core, 62, a spring, 63, a side embedded column, 64, a slide bar, 7, an injection molding product, 71, a metal piece, 711, a supporting rubber-coated surface, 712, an exposed part, 713, an exposed surface, 72, a plastic body, 721 and a protruding part.

Detailed Description

The following embodiments of the present invention will be specifically explained with reference to the accompanying drawings, which are only used for reference and illustration, and do not limit the scope of the present invention.

Referring to fig. 1 to 7, an injection mold for supporting encapsulation in a large area in a mold of a metal part comprises a fixed mold 1, a movable mold 2, three side core-pulling mechanisms (not labeled) and a supporting mechanism 3, wherein the movable mold 2 and the fixed mold 1 are assembled to form a cavity (not labeled) for accommodating the metal part 71 and encapsulating the metal part by injection molding, the utility model is illustrated by taking an electrode injection encapsulation mold of a lithium battery of a new energy automobile as an example, in the embodiment, an injection molding product of the lithium battery consists of the metal part 71 and a plastic body 72, wherein the metal member 71 is a bent member and is provided with a plurality of nuts, after the metal member 71 is encapsulated with rubber, only the nut holes, the exposed surface 713 and the exposed part 712 are exposed to form an electric contact part, the utility model discloses in, a side that metalwork 71 has the nut is the concentrated face of atress (not shown) of metalwork 71 in the process of moulding plastics, and the reverse side of the concentrated face of atress of metalwork 71 is the support rubber coating face 711 of metalwork 71 promptly.

Referring to fig. 1, 3 and 4, the movable mold 2 includes a movable mold base 21, an ejection mechanism (not labeled), two support plates (not labeled), a movable mold plate 24 and a movable mold core 25, the movable mold base 21 is fixed on the injection molding machine, the two support plates are fixed at two ends of the upper surface of the movable mold base 21, the movable mold plate 24 is fixed on the two support plates in an overlapping manner, the movable mold core 25 is embedded on the movable mold plate 24, the ejection mechanism is located between the two support plates, the ejection mechanism includes a thimble push plate 22, a thimble fixing plate 23 and a plurality of thimbles (not shown), the thimble fixing plate 23 and the thimble push plate 22 are arranged between the movable mold plate 24 and the movable mold base 21 in an overlapping manner, the thimbles are fixed on the thimble push plate 22 and sequentially pass through the thimble fixing plate 23, the movable mold plate 24 and the movable mold core 25, and the thimbles are used for pushing out the injection molded product 7.

Referring to fig. 4 and 5, in this embodiment, the three side core-pulling mechanisms are specifically a first side core-pulling mechanism (not labeled), a second side core-pulling mechanism (not labeled) and a third side core-pulling mechanism (not labeled), the first side core-pulling mechanism, the second side core-pulling mechanism and the third side core-pulling mechanism are disposed around the movable mold core 25, the first side core-pulling mechanism includes a first side core-pulling slider 4, a first side core 41 and an inclined guide pillar (not shown) fixed on the fixed mold 1 and matched with the first side core-pulling slider 4, the first side core-pulling slider 4 is slidably disposed at the left end of the movable mold 24, the first side core 41 is fixedly connected with the first side core-pulling slider 4 and is located in a groove at the left end of the movable mold core 25, the first side core 41 corresponds to the supporting rubber-covering surface 711 of the metal part 71, in this embodiment, a notch (not labeled) is disposed at the tail end of the first side core-pulling slider 4, and the second side core-pulling mechanism includes a second side core-pulling slider 5, The second side core-pulling slider 5 is arranged at the front end of the movable mould plate 24 in a sliding manner, the second side core 51 is fixedly connected with the second side core-pulling slider 5 and is positioned in a groove at the front end of the movable mould core 25, the second side core 51 corresponds to an exposed surface 713 of a metal piece 71, a protruding part 721 of a plastic body 72 is formed by enclosing a gap between the second side core 51 and the first side core 41, meanwhile, the second side core 51 is also used for abutting against the exposed surface 713 of the metal piece 71 to prevent the exposed surface 713 from being encapsulated, a plurality of side embedded columns (not shown) penetrate through the second side core 51 and extend into screw holes of the exposed surface 713, the third side core-pulling mechanism comprises a third side core-pulling slider 6, a third side core 61 and an inclined guide post 131 which is fixed on the fixed mould core-pulling slider 1 and is matched with the third side core-pulling slider 6, the third side core-pulling sliding block 6 is arranged at the right end of the movable mould plate 24 in a sliding way, the third side core 61 is positioned in a groove at the right end of the movable mould core 25, two limiting blocks 241 used for limiting the elastic sliding of the third side core-pulling sliding block 6 are arranged beside the third side core-pulling sliding block 6, one end of the third side core-pulling sliding block 6 is elastically connected with the third side core 61 through a spring 62, the other end of the third side core-pulling sliding block is in sliding abutting connection with the limiting block 241 through a sliding rod 64, a plurality of side embedded columns 63 penetrate through the third side core 61, part of the side embedded columns 63 extend into screw holes of the metal piece 71 or are close to the metal piece to form an injection molding groove, the supporting and rubber-coating surface area of the cavity for accommodating the metal piece 71 is formed by surrounding the first side core 41, the second side core 51, the third side core 61 and the movable mold core 25, and the specific structure of the three side cores is determined by the structure of the injection molding product 7 and is not elaborated herein.

Referring to fig. 1, fig. 2 and fig. 5, the supporting mechanism 3 includes an oil cylinder 32 and a supporting column 31, in this embodiment, because the stress point of the metal member is mainly concentrated on the nut side, the supporting position of the supporting column 31 needs to face away from the nut, so the supporting column 31 of this embodiment is located beside the first side core 41, the oil cylinder 32 is fixed on the first side core-pulling slider 4, the oil cylinder 32 is used for driving the supporting column 31 to abut against or be away from the supporting encapsulating surface 711 of the metal member, the supporting column 31 is disposed on the oil cylinder 32 and horizontally and movably penetrates through the first side core-pulling slider 4, and finally extends into the cavity and abuts against the supporting encapsulating surface 711 of the metal member 71 in the cavity, when the injection molding and pressure maintaining operations on the fixed mold 1 are completed, the supporting column 31 is away from the supporting encapsulating surface 711 of the metal member 71, and.

Referring to fig. 1, 3 and 4, the fixed mold 1 includes a fixed mold base 11, a fixed mold clamping plate 12, a fixed mold plate 13 and a fixed mold core 14, the fixed mold base 11 is fixed at an injection end of the injection molding machine, the fixed mold plate 13, the fixed mold clamping plate 12 and the fixed mold base 11 are stacked from bottom to top, the fixed mold core 14 is embedded on the fixed mold plate 13, two connecting posts 112 are fixed at the bottom of the fixed mold base 11, the two connecting posts 112 vertically penetrate through the fixed mold clamping plate 12, a main runner 111 penetrates through the fixed mold clamping plate 12 at the center of the fixed mold base 11, a curved cross runner (not labeled) is arranged on the upper surface of the fixed mold plate 13, the two connecting posts 112 are located above the cross runner and the tail end of the two connecting posts extends into the cross runner, two vertical runners (not labeled) penetrate through the fixed mold plate 13 side by side, the two cross runners are coaxial with the two connecting, the other end of the horizontal runner is in butt joint communication with the tops of the two straight runners, and the two straight runners penetrate through the cavity block 14 and are in butt joint communication with the cavity, in this embodiment, molten plastic in the main runner 111 enters the two straight runners after being split by the horizontal runner, and because the gates of the two straight runners are located on the same injection surface of the cavity, the molten plastic in the two straight runners directly enters the cavity and is injected on the metal block 71 to form a plastic body 72, the inclined guide posts matched with the three side core pulling mechanisms are all obliquely fixed on the die matching surface of the cavity block 13, a support block 132 is convexly arranged on the die matching surface of the cavity block 14, the top of the support block 132 is connected with the cavity block 14 through a spring (not shown), and the bottom of the support block 132 is directly abutted to the exposed part 712 of the cavity block 71, so as to prevent the exposed part 712 from being deformed during the injection molding of the metal block 71.

Referring to fig. 1 to 7, the working principle of the large-area supporting rubber coating injection mold in the mold of the metal piece of the present invention is: the method comprises the steps of placing a metal piece 71 to be encapsulated at a fixed position of a movable die 2, closing the movable die 2 and a fixed die 1, pushing a supporting column 31 to abut against a supporting encapsulation surface 711 of the metal piece 71 by an oil cylinder 32, injecting molten plastic into a main pouring gate 111, withdrawing the supporting column 31 in advance under the driving of the oil cylinder 32 until the injection and pressure maintaining are not finished, continuously applying injection force to a product by utilizing the pressure maintaining of an injection molding machine, filling the vacant position of the supporting column 31, achieving the purpose of sealing the gap, completing injection molding, forming an injection product 7, opening the movable die 2, driving three side core-pulling sliders to slide by an inclined guide pillar, keeping the three side cores away from a cavity, ejecting the injection product 7 by an ejector pin pushing plate 22 and an ejector pin fixing plate 23 through ejector pins, and taking out the injection product 7.

The utility model discloses support rubber coating injection mold in mould by a large scale of metalwork, support the support rubber coating face 711 of metalwork through the support column that can withdraw from in the mould, reduce metalwork rubber coating in-process and warp, it is inhomogeneous to prevent that the metalwork from moulding plastics rubber coating back meat thickness, not only influence the finished product equipment, still directly lead to the electrical insulation of product, electrical properties such as withstand voltage can't reach customer standard, can't provide the safety guarantee for the consumer, and simultaneously, utilize the pressurize performance of moulding plastics, fill the breach that the support column withdrawed from, prevent to leave the support vestige on the plastic body.

The above disclosure is only for the preferred embodiment of the present invention, and the scope of the right protection of the present invention cannot be limited thereby, and therefore, the equivalent changes made in the claims of the present invention still belong to the scope covered by the present invention.

Claims

1. The in-mold large-area supporting rubber coating injection mold for the metal part is characterized by comprising a movable mold and a fixed mold, wherein the movable mold and the fixed mold are assembled to form a cavity for accommodating the metal part and injecting rubber coating;

and when the plastic injection action on the fixed die is finished and the injection molding pressure maintaining is carried out, the supporting column is far away from the supporting plastic coating surface of the metal piece.

2. The in-mold large-area-support rubber-coating injection mold of a metal piece as claimed in claim 1, wherein a supporting block is elastically and convexly arranged on the clamping surface of the fixed mold, and the supporting block abuts against the exposed part of the metal piece.

3. The in-mold large-area supporting and rubber coating injection mold of a metal piece according to claim 1, wherein the supporting column horizontally penetrates into a movable mold core of the movable mold, and the supporting column is driven by an oil cylinder on the movable mold to abut against or be away from a supporting and rubber coating surface of the metal piece.

4. The in-mold large-area supporting, rubber-coating and injection mold of a metal piece according to claim 3, wherein the supporting and rubber-coating surface area of the cavity for accommodating the metal piece is defined by three side cores and the movable mold core, the three side cores are slidably disposed in the groove of the mold closing surface of the movable mold core and are correspondingly and fixedly connected with three different side core-pulling sliders, and the three side core-pulling sliders are slidably disposed on the movable mold plate of the movable mold.

5. The in-mold large-area supporting encapsulation injection mold of a metal piece according to claim 4, wherein the supporting columns penetrate through side core-pulling sliders located on the side of the supporting encapsulation surface of the metal piece and are close to the corresponding side cores, and the oil cylinders are fixed on the corresponding side core-pulling sliders.

6. The in-mold large area support over-molding injection mold of metal parts of claim 4, wherein the notch of one of the side cores and the adjacent other side core enclose a protrusion forming a plastic body.

7. The in-mold large-area support rubber-coating injection mold of a metal piece according to claim 4, wherein at least one of the side core-pulling sliders is provided with a side embedding column, and the side embedding column penetrates through the corresponding side core and extends into a screw hole of the metal piece or is close to the metal piece.

8. The in-mold large-area-support rubber-coating injection mold of a metal piece according to claim 4, wherein a limiting block is arranged beside at least one side core-pulling slider, one end of the side core-pulling slider is elastically connected with the corresponding side core, and the other end of the side core-pulling slider is in sliding abutment with the limiting block through a sliding rod.

9. The in-mold large-area-support-rubber-coating injection mold for metal parts, according to claim 1, wherein a main pouring channel is arranged on the fixed mold, the main pouring channel is branched by a horizontal pouring channel to form two vertical straight pouring channels, and the inlet gates of the two straight pouring channels are positioned on the same injection surface of the cavity.

10. The in-mold large area support encapsulated injection mold of metal parts of claim 9, wherein a connecting column is provided above the sprue, wherein the connecting column is fixed in the stationary mold and has a distal end extending into the runner.