CN214111246U

CN214111246U - High-roundness forming injection mold

Info

Publication number: CN214111246U
Application number: CN202021952008.5U
Authority: CN
Inventors: 朱池海; 任永茂
Original assignee: Xinlida Mould Industry Huizhou Co ltd
Current assignee: Xinlida Mould Industry Huizhou Co ltd
Priority date: 2020-09-08
Filing date: 2020-09-08
Publication date: 2021-09-03
Anticipated expiration: 2030-09-08

Abstract

The utility model discloses a high circularity molding injection mold is provided with an injection molding mechanism, a hole forming mechanism and a cooling mechanism, wherein the injection molding mechanism is arranged on an injection molding machine, the hole forming mechanism is arranged on the injection molding mechanism, and the cooling mechanism is arranged on the hole forming mechanism; due to the arrangement of the cooling mechanism, heat on each hole-formed part can be quickly transferred into cooling water, the heat is prevented from being continuously accumulated on each hole-formed part, the cooling forming speed of the sizing material for forming each position of the locking hole is the same as much as possible, and the roundness of the locking hole after forming is improved; the cooling distribution pipes are located between two adjacent hole forming parts in a one-to-one correspondence mode, so that the glue between the hole forming parts can be cooled and formed at the same speed as far as possible, heat is prevented from being accumulated between the two adjacent hole forming parts, the locking hole in the plastic part is prevented from being aligned with the screw hole in the preset installation position, and the hole forming position accuracy of the plastic part is improved.

Description

High-roundness forming injection mold

Technical Field

The utility model relates to an injection mold field especially relates to a high circularity shaping injection mold.

Background

After the injection mold finishes injection molding, the injection molding machine can drive the front mold and the rear mold to open the mold, so that an injection molding workpiece after cooling molding is exposed between the front mold and the rear mold, and in the mold opening process, when the front mold and the rear mold are separated from each other, the slide mechanism is driven by the front mold and the rear mold to move in a slide manner, so that protruding parts such as buckles of the injection molding workpiece are prevented from being clamped on the mold, and the injection molding workpiece can be smoothly demolded.

However, the existing injection mold suffers from the following technical problems during the injection molding process:

firstly, a plastic part is usually locked to a preset installation position through a fastener, so that a locking hole needs to be formed in the plastic part in the injection molding process, but because the rubber material shrinks to a certain extent in the cooling forming process, the cooling forming speed of the rubber material for forming each position of the locking hole has a certain difference, the locking hole in the plastic part has insufficient roundness after being formed, and therefore a locking member cannot penetrate through the locking hole, and the plastic part cannot be fixed to the preset position;

furthermore, a plurality of locking holes are formed in the plastic part, the cooling rate of each part of the rubber used for forming each locking hole is different, the larger the distribution range of the locking holes is, the larger the forming error of the locking holes on the plastic part is, therefore, when the plastic part is installed on a preset position, the situation that the locking holes in the plastic part cannot be aligned with the screw holes in the preset installation position may occur, and the hole forming position accuracy of the porous plastic part is low.

SUMMERY OF THE UTILITY MODEL

The utility model aims at overcoming the weak point among the prior art, providing a high circularity shaping injection mold, this high circularity shaping injection mold can improve the shaping circularity in the locking hole on the plastic part, can also improve the shaping position accuracy in each shaping hole on the plastic part.

The purpose of the utility model is realized through the following technical scheme:

the utility model provides a high circularity shaping injection mold, includes injection mold mechanism, injection mold mechanism includes front mould and back mould, high circularity shaping injection mold still includes:

the hole forming mechanism comprises a driving rod, a driving seat, a positioning seat and a plurality of hole forming parts, wherein the driving rod is arranged on the front die, the driving seat is arranged on the rear die in a sliding manner, the positioning seat is arranged on the driving seat, the hole forming parts are arranged on the positioning seat, the driving rod is used for supporting the driving seat to slide relative to the rear die when the front die is matched with the rear die, so that the front die, the rear die and the positioning seat jointly form an injection forming cavity, and the hole forming parts are exposed in the injection forming cavity; and

the cooling mechanism comprises a water inlet pipe, a water outlet pipe, a cold collecting pipe and a plurality of cold distributing pipes, wherein the water inlet pipe and the water outlet pipe are respectively arranged on the driving seat, the cold collecting pipe is arranged on the positioning seat, one end of the cold collecting pipe is communicated with the water inlet pipe, the other end of the cold collecting pipe is communicated with the water outlet pipe, the cold distributing pipes are respectively arranged on the positioning seat, the cold distributing pipes are respectively communicated with the cold collecting pipes, and the cold distributing pipes are correspondingly positioned between the two adjacent hole forming parts.

In one embodiment, the injection mold for high roundness molding further comprises an auxiliary cooling mechanism, the auxiliary cooling mechanism comprises a flow inlet pipe, a flow outlet pipe, a flow distribution pipe and a plurality of flow dividing pipes, the flow inlet pipe, the flow outlet pipe and the flow distribution pipe are respectively arranged on the driving seat, the flow distribution pipe is respectively communicated with the flow inlet pipe and the flow outlet pipe, the flow dividing pipes are respectively arranged on the driving seat, the flow dividing pipes are sleeved on the hole forming parts in a one-to-one correspondence manner, and the flow dividing pipes are communicated with the flow distribution pipe.

In one embodiment, the auxiliary cooling mechanism further includes a plurality of sealing rings, each sealing ring is sleeved on each shunt tube in a one-to-one correspondence manner, and each sealing ring is clamped between the driving seat and the positioning seat.

In one embodiment, in one hole forming part, part of the side wall of the hole forming part protrudes outwards to form a cooling cone, and the shunt tubes are sleeved on the cooling cones in a one-to-one correspondence mode.

In one embodiment, each of the seal rings is an O-ring seal.

In one embodiment, each hole forming member is provided with a demoulding round corner.

In one embodiment, the driving rod is provided with a guiding round corner, and the driving seat is provided with a guiding hole.

In one embodiment, the wall of the guide hole is provided with a guide curved surface.

In one embodiment, the hole forming mechanism further comprises a groove body forming lug, the groove body forming lug is arranged on the positioning seat, and the groove body forming lug is exposed in the injection molding cavity.

In one embodiment, the hole forming mechanism further comprises a limiting block and a limiting screw, the limiting screw penetrates through the limiting block, and the end part of the limiting screw is connected with the rear mold.

Compared with the prior art, the utility model discloses advantage and beneficial effect below having at least:

Drawings

In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings that are required to be used in the embodiments will be briefly described below, it should be understood that the following drawings only illustrate some embodiments of the present invention, and therefore should not be considered as limiting the scope, and for those skilled in the art, other related drawings can be obtained according to the drawings without inventive efforts.

Fig. 1 is a schematic structural view of a high roundness injection mold according to an embodiment of the present invention;

fig. 2 is an exploded view of a high roundness injection mold according to an embodiment of the present invention;

fig. 3 is a schematic view of a partial structure of a high roundness injection mold according to an embodiment of the present invention;

FIG. 4 is an enlarged schematic view of FIG. 3 at A;

fig. 5 is a schematic structural view of a high roundness injection mold according to another embodiment of the present invention;

fig. 6 is a schematic view of an internal structure of a high roundness injection mold according to an embodiment of the present invention;

fig. 7 is a schematic view of an internal structure of a high roundness injection mold according to another embodiment of the present invention;

fig. 8 is an enlarged schematic view at B of fig. 7.

Detailed Description

In order to facilitate understanding of the present invention, the present invention will be described more fully hereinafter with reference to the accompanying drawings. The preferred embodiments of the present invention are shown in the drawings. The invention may, however, be embodied in many different forms and should not be construed as limited to the embodiments set forth herein. Rather, these embodiments are provided so that this disclosure will be thorough and complete.

It will be understood that when an element is referred to as being "secured to" another element, it can be directly on the other element or intervening elements may also be present. When an element is referred to as being "connected" to another element, it can be directly connected to the other element or intervening elements may also be present. The terms "vertical," "horizontal," "left," "right," and the like as used herein are for illustrative purposes only and do not represent the only embodiments.

Unless defined otherwise, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention belongs. The terminology used herein in the description of the invention is for the purpose of describing particular embodiments only and is not intended to be limiting of the invention. As used herein, the term "and/or" includes any and all combinations of one or more of the associated listed items.

Referring to fig. 1, the high roundness injection mold 10 includes an injection mechanism 100, the injection mechanism 100 includes a front mold 110 and a rear mold 120, and the front mold 110 and the rear mold 120 are respectively disposed on an injection molding machine.

The front mold 110 and the rear mold 120 are used for mold clamping under the driving of an injection molding machine; the front mold 110 is provided with a glue injection opening 111.

Referring to fig. 2 and 3, the injection mold 10 for high roundness molding further includes a hole molding mechanism 200 and a cooling mechanism 300, wherein the hole molding mechanism 200 is disposed on the injection molding mechanism 10, and the cooling mechanism 300 is disposed on the hole molding mechanism 200.

It should be noted that the hole forming mechanism 200 is used for forming a locking hole on a plastic part; the cooling mechanism 300 is used to cool various parts of the hole forming mechanism 200, so that the glue directly contacting with the hole forming mechanism 200 can be rapidly cooled and formed at the same speed as possible.

Referring to fig. 2, fig. 3, fig. 4 and fig. 5, the hole forming mechanism 200 includes a driving rod 210, a driving seat 220, a positioning seat 230 and a plurality of hole forming members 240, the driving rod 210 is disposed on the front mold 110, the driving seat 220 is slidably disposed on the rear mold 120, the positioning seat 230 is mounted on the driving seat 220, each hole forming member 240 is disposed on the positioning seat 230, when the front mold 110 is assembled with the rear mold 120, the driving rod 210 is used for supporting the driving seat 220 to slide relative to the rear mold 120, so that the front mold 110, the rear mold 120 and the positioning seat 230 jointly enclose an injection molding cavity 20, and the hole forming members 240 are exposed in the injection molding cavity 20.

It should be noted that the driving rod 210 is used for supporting the driving seat 220 under the driving of the front mold 110, so that the driving seat 220 slides on the rear mold 120; the driving seat 220 is used for driving the positioning seat 230 to synchronously move relative to the rear mold 120; the positioning seat 230 is used for fixing each hole molding member 240; the plurality of hole forming members 240 are used for forming locking holes on the plastic parts; the injection molding cavity 20 is used for molding a plastic part, and the injection molding cavity 20 is communicated with the glue injection port 111.

It should be added that, when injection molding is required, the injection molding machine drives the front mold 100 and the rear mold 200 to mold, and when the front mold 100 is attached to the rear mold 200, the driving seat 220 is supported by the driving rod 210 and moves to a predetermined position on the rear mold 200, so that the front mold 110, the rear mold 120 and the positioning seat 230 together enclose the injection molding cavity 20; meanwhile, after the front mold and the rear mold are closed, the part of the hole forming member 240 is exposed in the injection molding cavity 20, so that after the glue enters the injection molding cavity 20 through the glue injection port 111, the part of the hole forming member 240 exposed in the injection molding cavity 20 is coated, that is, the glue can only be cooled and formed along the outline of the hole forming member 240, so that a locking hole is formed in the plastic part.

Referring to fig. 5 and 6, the cooling mechanism 300 includes a water inlet pipe 310, a water outlet pipe 320, a cold collecting pipe 330 and a plurality of cold distributing pipes 340, the water inlet pipe 310 and the water outlet pipe 320 are respectively disposed on the driving seat 220, the cold collecting pipe 330 is disposed on the positioning seat 230, one end of the cold collecting pipe 330 is communicated with the water inlet pipe 310, the other end of the cold collecting pipe 330 is communicated with the water outlet pipe 320, the cold distributing pipes 340 are respectively disposed on the positioning seat 230, the cold distributing pipes 340 are communicated with the cold collecting pipe 330, and the cold distributing pipes 340 are correspondingly disposed between two adjacent hole forming members 240.

It should be noted that the water inlet pipe 310 is communicated with an output end of an external water pump; the cold collecting pipe 330 is used for guiding the cooling water output by the water inlet pipe 310 to flow into the water outlet pipe 320 and is also used for cooling the positioning seat 230; each cooling distribution pipe 340 is used for exchanging heat accumulated between two adjacent hole forming pieces 240; the water outlet pipe 320 is used for guiding the cooling water after heat exchange to the outside of the injection mold;

it should be added that, in the process of cooling and forming the rubber material, the cooling water in the cold collecting pipe 330 exchanges heat with the positioning seat 230, so that the rubber material directly contacting with the positioning seat 230 can be cooled and formed as fast as possible at the same rate, the plastic part is prevented from affecting the forming position of each locking hole on the plastic part due to the low cooling synchronization rate, and the precision of the hole forming position on the plastic part is improved; meanwhile, the heat on each hole forming member 240 exchanges heat with the cooling water in the cooling distribution pipe 340 between two adjacent hole forming members 240, so that the heat on the hole forming members 240 can be quickly transferred to the outside, and the heat is further prevented from accumulating on the positioning seat 230; therefore, in the cooling and forming process of the plastic part, the cooling rate of the sizing material for forming the locking hole part can be ensured to be the same as much as possible, and the forming rate of each position of the plastic part can be ensured to be the same as much as possible, so that the hole forming precision of each locking hole in the plastic part is improved, and the forming roundness of each locking hole is also improved.

Referring to fig. 5, 7 and 8, in one embodiment, the high roundness injection mold 10 further includes an auxiliary cooling mechanism 400, the auxiliary cooling mechanism 400 includes a flow inlet pipe 410, a flow outlet pipe 420, a flow distribution pipe 430 and a plurality of flow dividing pipes 440, the flow inlet pipe 410, the flow outlet pipe 420 and the flow distribution pipe 430 are respectively disposed on the driving base 220, the flow distribution pipe 430 is respectively communicated with the flow inlet pipe 410 and the flow outlet pipe 420, the flow dividing pipes 440 are respectively disposed on the driving base 220, the flow dividing pipes 440 are respectively sleeved on the hole forming members 240 one by one, and the flow dividing pipes 440 are respectively communicated with the flow distribution pipe 430.

It should be noted that the auxiliary cooling mechanism 400 is used for cooling each hole forming member 240; the inflow pipe 410 is used for guiding cooling water pumped by an external water pump into the flow distribution pipe 430; the flow distribution pipe 430 is used for distributing cooling water into each flow distribution pipe 440, and the flow outlet pipe 420 is used for guiding the cooling water in the flow distribution pipe 430 to the outside of the injection mold; the shunt tubes 440 cool the hole forming members 240 in a one-to-one correspondence.

It should be added that each hole forming member 240 can directly exchange heat with the cooling water in the shunt pipe 440, so that the heat on each hole forming member 240 can be rapidly transferred to the outside, thereby improving the forming roundness of each locking hole and increasing the cooling forming rate of the plastic part.

Further, referring to fig. 8, in one embodiment, the auxiliary cooling mechanism 400 further includes a plurality of sealing rings 450, each sealing ring 450 is sleeved on each shunt tube 440 in a one-to-one manner, and each sealing ring 450 is clamped between the driving seat 220 and the positioning seat 230.

It should be noted that the sealing ring 450 is used to seal the connection position of the shunt pipe 440 and the hole forming member 240, so as to prevent the coolant from directly flowing out from the matching position of the shunt pipe 440 and the hole forming member 240; specifically, each seal 450 is an O-ring seal.

Further, referring to fig. 8, in one embodiment, in one hole forming member 240, a portion of the sidewall of the hole forming member 240 protrudes outward to form the cooling cone 250, and the shunt tubes 440 are sleeved on the cooling cones 250 in a one-to-one correspondence manner.

It should be noted that, the cooling cone 250 increases the heat exchange area between each hole-forming member 240 and the cooling water, so as to further increase the cooling forming rate of the glue material directly contacting each hole-forming member 240, further increase the forming roundness of each locking hole, and further increase the cooling forming rate of the plastic part.

Referring to fig. 7, in one embodiment, each hole forming member 240 is provided with a mold release fillet 241.

It should be noted that, the arrangement of the demolding round portion 241 prevents the cooled and molded rubber from adhering to the hole-formed member 240, so that the hole-formed member 240 can be smoothly released from the locking hole, and the plastic member is conveniently demolded.

Referring to fig. 6, in one embodiment, the driving rod 210 has a guiding round portion 211, and the driving seat 220 has a guiding hole 221.

The guide rounded portion 211 serves to guide the driving rod 210 to align with the guide hole 221; the wall of the guide hole 221 is used for supporting the driving rod 210; specifically, the driving rod 210 pushes against the hole wall of the guide hole 221 during mold clamping, so that the driving shoe 220 can slide on the rear mold 120.

Further, referring to fig. 6, in one embodiment, the wall of the guiding hole 221 is provided with a guiding curved surface 222.

It should be noted that the guiding curved surface 222 and the guiding rounded portion 211 together play a role of guiding the driving rod 210 to align with the guiding hole 221, so that the driving rod 210 can be accurately inserted into the guiding hole 221.

Referring to fig. 7, in one embodiment, the hole forming mechanism 200 further includes a slot forming protrusion 260, the slot forming protrusion 260 is disposed on the positioning seat, and the slot forming protrusion 260 is exposed in the injection molding cavity 20.

It should be noted that the glue filled in the injection molding cavity 20 is cooled and molded along the contour of the slot body molding protrusion 260, so that the weight-reducing slot is molded on the plastic part.

Referring to fig. 5, in one embodiment, the hole forming mechanism 200 further includes a limit block 270 and a limit screw 280, the limit screw 280 penetrates through the limit block 270, and an end of the limit screw 280 is connected to the rear mold 120.

It should be noted that the limiting screw 280 is used for fixing the limiting block 270 to the rear mold 120; the stopper 270 is used to limit the driving seat 220, so as to prevent the driving seat 220 from being directly separated from the rear mold 120.

The above-mentioned embodiments only represent some embodiments of the present invention, and the description thereof is 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. The utility model provides a high circularity shaping injection mold, includes the mechanism of moulding plastics, the mechanism of moulding plastics includes front mould and back mould, its characterized in that still includes:

2. The high roundness injection mold according to claim 1, further comprising an auxiliary cooling mechanism, wherein the auxiliary cooling mechanism includes a flow inlet pipe, a flow outlet pipe, a flow distribution pipe, and a plurality of flow dividing pipes, the flow inlet pipe, the flow outlet pipe, and the flow distribution pipe are respectively disposed on the driving seat, the flow distribution pipe is respectively communicated with the flow inlet pipe and the flow outlet pipe, the flow dividing pipes are respectively disposed on the driving seat, the flow dividing pipes are respectively sleeved on the hole forming members in a one-to-one correspondence manner, and the flow dividing pipes are respectively communicated with the flow distribution pipe.

3. The high roundness injection mold according to claim 2, wherein the auxiliary cooling mechanism further includes a plurality of sealing rings, each of the sealing rings is fitted to each of the shunt tubes in a one-to-one correspondence, and each of the sealing rings is held between the driving seat and the positioning seat.

4. The high roundness injection mold of claim 2, wherein in one of the hole forming members, a part of the side wall of the hole forming member protrudes outward to form a cooling cone, and the respective shunt tubes are sleeved on the respective cooling cones in a one-to-one correspondence.

5. The high roundness injection mold of claim 3 wherein each of the seal rings is an O-ring.

6. The high roundness injection mold of claim 1, wherein each of the hole-forming members has a round demolding portion.

7. The high roundness injection mold of claim 1, wherein the driving rod is provided with a guiding round portion, and the driving seat is provided with a guiding hole.

8. The high roundness injection mold of claim 7, wherein the wall of the guide hole is provided with a curved guide surface.

9. The high roundness injection mold according to claim 1, wherein the hole forming mechanism further includes a groove forming projection, the groove forming projection is disposed on the positioning seat, and the groove forming projection is exposed in the injection molding cavity.

10. The high roundness injection mold according to claim 1, wherein the hole forming mechanism further includes a stopper and a stopper screw, the stopper screw penetrates through the stopper, and an end of the stopper screw is connected to the rear mold.