CN210026070U - Injection mold convenient to change mould benevolence - Google Patents

Abstract

The utility model discloses an injection mold convenient for replacing a mold core, which comprises a lower mold and an upper mold, wherein the lower mold is provided with a lower injection molding groove, the upper mold is provided with an upper injection molding groove at the corresponding position of the lower injection molding groove, the lower injection molding groove and the upper injection molding groove jointly form an injection molding groove, and the injection molding groove is used for injection molding a binding belt; injection molding holes communicated with the injection molding grooves are respectively formed in the lower die and the upper die; a mould core hole is arranged in the upper mould, a stopping groove is arranged at one end of the mould core hole close to the injection groove, a mould core is arranged in the mould core hole, a stopping block is arranged on the mould core, and the stopping block is arranged in the stopping groove; the end face of the mold core close to one end of the injection molding groove is provided with a mark which needs to be printed or injected, and the mold core is fixed in the stopping groove or the mold core hole through a fixing mechanism. The utility model discloses mould benevolence replacement is simple and easy to operate, and operating efficiency has improved 70%. The whole mold core needs to be manufactured before, and the corresponding manufacturing cost is reduced.

Description

Injection mold convenient to change mould benevolence

Technical Field

The utility model relates to an injection mold especially relates to an injection mold convenient to change mould benevolence.

Background

At present, structural factors such as water path arrangement and the like of the mold insert of the injection molding product mostly adopt an integral structure form, so that the Logo of the product after final molding cannot be subjected to replacement treatment, and different logos required by customers cannot be met. The early-stage die development is seriously influenced, and the manufacture of die parts is greatly increased. Enterprise costs and management needs increase accordingly.

And because do not increase during earlier stage design and mark, just need whole processing mould benevolence when leading to later stage need increase "Logo" and mark, this cost that can increase the enterprise. In addition, even if the mold core is machined, when the mark needs to be replaced, the mold core needs to be additionally machined, so that the requirement of the mold is large, and the enterprise cost is seriously high.

SUMMERY OF THE UTILITY MODEL

In view of the above-mentioned defect of prior art, the utility model aims to solve the technical problem that an injection mold convenient to change mould benevolence is provided, it can change at any time as required and mark, does not need processing mould benevolence moreover, only adopts one set of mould can realize various processing that mark.

In order to achieve the purpose, the utility model provides an injection mold convenient for replacing a mold core, which comprises a lower mold and an upper mold, wherein the lower mold is provided with a lower injection molding groove, the upper mold and the lower injection molding groove are provided with an upper injection molding groove at the corresponding position, the lower injection molding groove and the upper injection molding groove jointly form an injection molding groove, and the injection molding groove is used for injecting a binding belt; injection molding holes communicated with the injection molding grooves are respectively formed in the lower die and the upper die;

a mould core hole is arranged in the upper mould, a stopping groove is arranged at one end of the mould core hole close to the injection groove, a mould core is arranged in the mould core hole, a stopping block is arranged on the mould core, and the stopping block is arranged in the stopping groove;

the end face of the mold core close to one end of the injection molding groove is provided with a mark which needs to be printed or injected, and the mold core is fixed in the stopping groove or the mold core hole through a fixing mechanism.

Preferably, the die core is arranged on the band body of the cable tie close to the large end.

Preferably, the fixing mechanism is a bolt, and the bolt penetrates through the stopping block and then is assembled and fixed with the upper die, so that the die core is fixed in the stopping groove, and one end of the die core is arranged in the die core hole; a notch is formed between the die core and the backstop block and is used for accommodating the large end of the bolt.

Preferably, a sealing installation groove is formed at the assembly position of the retaining block and the retaining groove, a sealing ring is fixed in the sealing installation groove, and the sealing ring seals a gap between the mold core and the inner wall of the retaining groove.

Preferably, the fixing mechanism comprises a clamping sleeve and a screwing barrel, wherein the top of the mold core extends out of the mold core hole, a clamping annular groove is formed in the extending part of the mold core, the clamping annular groove is clamped and assembled with a clamping protrusion, the clamping protrusion is arranged on the inner side of the clamping sleeve, a guide part is arranged at the top of the clamping sleeve, an inner guide surface and an outer guide surface are respectively arranged on the inner side and the outer side of the guide part, the inner guide surface is attached and assembled with a matching inclined surface arranged at the top of the mold core, and the outer guide surface is used for guiding the screwing barrel to be installed;

the inboard elastic sheet outside that closes soon through screw thread and chucking cover of section of thick bamboo of screwing assemble fixedly, the protruding setting of block inboard at the elastic sheet, and the elastic sheet has the polylith, forms the groove of stepping down between per two adjacent elastic sheets.

Preferably, the elastic sheet has elasticity.

The utility model has the advantages that:

1. the utility model discloses mould benevolence replacement is simple and easy to operate, and operating efficiency has improved 70%. The whole mold core needs to be manufactured before, and the corresponding manufacturing cost is reduced.

2. The utility model discloses and mark mould benevolence according to the "Logo" of different grade type, do the replacement in process of production, increased the work efficiency of production.

3. The utility model discloses select the easy shaping region of ribbon product to do mould benevolence hole position, reduce the degree of difficulty of mould benevolence when the preparation.

Drawings

Fig. 1 is a schematic structural diagram of the present invention.

Fig. 2 is a sectional view a-a in fig. 1.

Fig. 3 is a sectional view B-B of fig. 1.

Fig. 4 is a schematic view of an improved structure of the mold core of the present invention.

Fig. 5 is a schematic view of the structure of the clamping sleeve of the present invention.

Fig. 6 is a schematic view of the structure of the clamping sleeve of the present invention.

Detailed Description

The invention will be further explained with reference to the following figures and examples:

referring to fig. 1 to 3, an injection mold convenient for mold core replacement comprises a lower mold 100 and an upper mold 200, wherein a lower injection groove 101 is formed in the lower mold 100, an upper injection groove 201 is formed in a position, corresponding to the lower injection groove 101, of the upper mold 200, the lower injection groove 101 and the upper injection groove 201 jointly form an injection groove, and the injection groove is used for an injection molding tie 300; of course, injection molding holes communicated with the injection molding grooves are respectively formed in the lower mold 100 and the upper mold 200, so that liquid plastic is injected into the injection molding grooves through the injection molding holes, and finally the ribbon 300 is obtained;

a mold core hole 202 is formed in the upper mold 200, a stopping groove 203 is formed in one end, close to the injection groove, of the mold core hole 202, a mold core 410 is installed in the mold core hole 202, a stopping block 420 is arranged on the mold core 410, and the stopping block 420 is installed in the stopping groove 203, so that the mold core 410 is prevented from moving in the length direction (in the vertical direction) when the injection molding machine is used, and the final injection molding quality is influenced;

the end surface of the mold core 410 near the end of the injection molding groove is provided with a mark (such as LOGO) to be printed or injected, so that the mark can be directly formed on the tie 300 during injection molding.

Preferably, for the purpose of indicating the performance of the cable tie, the influence on the mold, and the overall cost, the mold insert 410 is disposed on the band body 310 of the cable tie 300 near the large end 320, so that the final indication is also injected at this position, and this design firstly makes the injection molding of the indication simpler, the success rate is almost 100%, and the influence on the entire mold is small, and the cost is also lower.

Preferably, the mold core 410 is installed in the stopping groove 203 through a bolt 430, specifically, the bolt 430 passes through the stopping block 420 and then is assembled and fixed with the upper mold 200, so that the mold core 410 is fixed in the stopping groove 203 and one end of the mold core 410 is installed in the mold core hole 202;

a slot 401 is formed between the mold core 410 and the stop block 420, and the slot 401 is used for accommodating the large end of the bolt 430.

When the injection molding die is used, the die core is only required to be fixed in the retaining groove, then the upper die and the lower die are closed, liquid plastic is filled in the injection molding groove, and then cooling molding is waited. When the mold core needs to be replaced, the bolt is directly screwed out, and then the mold core needed in the replacement of the existing mold core is taken out, so that the method is very convenient and has no influence on the whole mold.

Referring to fig. 4-6, since the injection molding process involves heating and cooling, which greatly affects the assembly of the bolt, it is known that the bolt expands with heat and contracts with cold. After a long period of use, bolt 430 may not be tightened with the upper mold, which may greatly affect the final product. If the gap between the mold core and the upper mold is not properly sealed, the liquid plastic can flow into the gap between the mold core and the mold core hole 202 and the stopping groove 203 from the injection groove through the gap between the upper mold and the lower mold, and finally the mold core is not easy to take out. Therefore, the applicant made the following improvements:

the die core is fixed without bolts 430, meanwhile, a sealing installation groove 402 is arranged at the assembly position of the backstop block 420 and the backstop groove 203, a sealing ring 440 is fixed in the sealing installation groove 402, and the sealing ring seals a gap between the die core 410 and the inner wall of the backstop groove 203;

the top of the mold core 410 extends out of the mold core hole 202, a clamping ring groove 411 is arranged on the extending part, the clamping ring groove 402 is clamped and assembled with a clamping protrusion 521, the clamping protrusion 521 is arranged on the inner side of a clamping sleeve 520, a guide part 522 is arranged on the top of the clamping sleeve 520, an inner guide surface 5221 and an outer guide surface 5222 are respectively arranged on the inner side and the outer side of the guide part 522, the inner guide surface 5221 is attached and assembled with a matching inclined surface 412 arranged on the top of the mold core 410, and the outer guide surface 5222 is used for guiding the screwing cylinder 510 to be installed;

the inner side of the screwing barrel 510 is screwed and assembled with the outer side of the elastic piece 524 of the clamping sleeve 520 through threads, the clamping protrusion 521 is arranged on the inner side of the elastic piece 524, the elastic piece 524 is provided with a plurality of blocks, and a yielding groove 523 is formed between every two adjacent elastic pieces 524.

In the initial state, the clamping sleeve 520 is shown in fig. 6, and has a gradually enlarged diameter from top to bottom. When in use, the clamping sleeve 520 is sleeved on the top of the die core 410 until the inner guide surface 5221 cannot move downwards continuously, at the moment, the inner guide surface 5221 is tightly attached to the matching inclined surface 412, and the clamping protrusion 521 is opposite to the clamping ring groove 411;

then, the screwing barrel 510 is sleeved outside the clamping sleeve 520 and is loaded on the top of the elastic piece 524 through the outer guide surface 5222, then the screwing barrel 510 is rotated, so that the inner side of the screwing barrel 510 is screwed and assembled with the threads on the outer side of the elastic piece 524 until the screwing barrel 510 can not rotate any more, at this time, the screwing barrel 510 extrudes the elastic piece 524 inwards, so that the clamping protrusion 521 is tightly assembled with the clamping ring groove 411, and in the top view direction of fig. 4, the outer wall of the screwing barrel 510 is located on the outer side of the mold core hole 202, which is mainly used for fixing the mold core in the vertical direction by the screwing barrel 510.

The elastic sheet has elasticity and can be made of an elastic plastic sheet or an elastic metal sheet.

The design can firstly make the clamping sleeve made of plastic or other heat-insulating materials, thereby reducing the influence of the heat of the mold core on the threads between the screwing cylinder and the outer wall of the elastic sheet, and the disassembly and the assembly are very convenient. And after the liquid plastic enters the wood stopping groove and is solidified, directly knocking the mold core from one end of the screwing cylinder to take out the mold core.

The details of the present invention are well known to those skilled in the art.

The foregoing has described in detail preferred embodiments of the present invention. It should be understood that numerous modifications and variations can be devised by those skilled in the art in light of the teachings of the present invention without undue experimentation. Therefore, the technical solutions that can be obtained by a person skilled in the art through logic analysis, reasoning or limited experiments based on the prior art according to the concepts of the present invention should be within the scope of protection defined by the claims.

Claims (6)

1. An injection mold convenient for replacing a mold core comprises a lower mold and an upper mold, wherein a lower injection groove is formed in the lower mold, an upper injection groove is formed in the position, corresponding to the lower injection groove, of the upper mold, the lower injection groove and the upper injection groove jointly form an injection groove, and the injection groove is used for injecting a binding belt; injection molding holes communicated with the injection molding grooves are respectively formed in the lower die and the upper die; the method is characterized in that:

a mould core hole is arranged in the upper mould, a stopping groove is arranged at one end of the mould core hole close to the injection groove, a mould core is arranged in the mould core hole, a stopping block is arranged on the mould core, and the stopping block is arranged in the stopping groove;

the end face of the mold core close to one end of the injection molding groove is provided with a mark which needs to be printed or injected, and the mold core is fixed in the stopping groove or the mold core hole through a fixing mechanism.

2. The injection mold of claim 1, wherein: the mould core is arranged on the belt body of the ribbon near the big end.

3. The injection mold of claim 1, wherein: the fixing mechanism is a bolt which penetrates through the stopping block and then is assembled and fixed with the upper die, so that the die core is fixed in the stopping groove, and one end of the die core is arranged in the die core hole; a notch is formed between the die core and the backstop block and is used for accommodating the large end of the bolt.

4. An injection mold according to claim 1 or 3, characterized in that: and a sealing installation groove is formed at the assembly position of the stopping block and the stopping groove, a sealing ring is fixed in the sealing installation groove, and the sealing ring seals a gap between the die core and the inner wall of the stopping groove.

5. The injection mold of claim 1, wherein: the fixing mechanism comprises a clamping sleeve and a screwing barrel, wherein the top of the mold core extends out of a mold core hole, a clamping annular groove is formed in the extending part of the mold core, the clamping annular groove is clamped and assembled with a clamping protrusion, the clamping protrusion is arranged on the inner side of the clamping sleeve, a guide part is arranged on the top of the clamping sleeve, an inner guide surface and an outer guide surface are respectively arranged on the inner side and the outer side of the guide part, the inner guide surface is attached and assembled with a matching inclined surface arranged on the top of the mold core, and the outer guide surface is used for guiding the screwing barrel to be installed;

the inboard elastic sheet outside that closes soon through screw thread and chucking cover of section of thick bamboo of screwing assemble fixedly, the protruding setting of block inboard at the elastic sheet, and the elastic sheet has the polylith, forms the groove of stepping down between per two adjacent elastic sheets.

6. The injection mold of claim 5, wherein: the elastic sheet has elasticity.

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