CN113619032A

CN113619032A - Take screw thread with mould of integrated into one piece product

Info

Publication number: CN113619032A
Application number: CN202110908578.7A
Authority: CN
Inventors: 周浪; 缪龙
Original assignee: Suzhou Yu'anjun Precision Technology Co ltd
Current assignee: Suzhou Yu'anjun Precision Technology Co ltd
Priority date: 2021-08-09
Filing date: 2021-08-09
Publication date: 2021-11-09

Abstract

The invention relates to a die with screw teeth for integrally forming a product, which comprises: the upper die assembly comprises an upper die core; the lower die assembly comprises a lower die core butted with the upper die core, the upper die core and the lower die core are matched with each other to form an accommodating cavity and a die cavity for forming a product, and the accommodating cavity is communicated with the die cavity; the sliding assembly is at least partially arranged in the accommodating cavity and can move relative to the accommodating cavity; an insert disposed at least partially within the cavity to cooperate to form a product; the sliding assembly is provided with a forming position and a demoulding position, and when the sliding assembly is positioned at the forming position, the sliding assembly and the insert are clamped to fix the insert; when being located the drawing of patterns position, slip subassembly and inserts separation, the inserts takes out with the product after the shaping together, takes out the inserts in with the product through other structures to can enough form the product that has the screw tooth, can not lead to the fact the damage to fashioned product again when taking out the inserts after the product drawing of patterns, need not later stage manual repair, and then improve work efficiency and production efficiency.

Description

Take screw thread with mould of integrated into one piece product

Technical Field

The invention relates to a die with screw teeth for integrally forming a product, and belongs to the technical field of dies.

Background

The mould is various moulds and tools for obtaining required products by injection molding, blow molding, extrusion, die casting or forging forming, smelting, stamping and other methods in industrial production. In short, a mold is a tool for molding an article, which is composed of various parts, and different molds are composed of different parts, and it is accomplished by the processing of the outer shape of the article mainly by the change of the physical state of the molded material.

When the material for forming the product with the screw teeth is hard, the formed product can not be subjected to subsequent machine tapping according to the conventional process and must be completed in the injection molding process of a mold. It is owing to need take out the thread inserts in the product after the shaping, can make the product surface leave the damage vestige, needs later stage manual work to get rid of this vestige, reduces work efficiency technique and production efficiency.

Disclosure of Invention

The invention aims to provide a die with a screw tooth for integrally forming a product, which can not cause damage traces on the surface of the product when a screw tooth insert in the formed product is taken out, does not need manual repair in the later period, and improves the working efficiency and the production efficiency.

In order to achieve the purpose, the invention provides the following technical scheme: a mold with a screw thread to integrally form a product, comprising:

the upper die assembly comprises an upper die core;

the lower die assembly comprises a lower die core butted with the upper die core, the upper die core and the lower die core are matched with each other to form an accommodating cavity and a die cavity for forming a product, and the accommodating cavity is communicated with the die cavity;

the sliding assembly is at least partially arranged in the accommodating cavity and can move relative to the accommodating cavity;

an insert disposed at least partially within the cavity to cooperate to form a product;

the sliding assembly is provided with a forming position and a demolding position, and when the sliding assembly is located at the forming position, the sliding assembly is clamped with the insert to fix the insert; when in the demolding position, the sliding assembly is separated from the insert.

Further, the slide assembly includes a slide disposed about the cavity;

one of the sliders has at least one abutment portion, and the insert is mounted in abutment with the abutment portion for securement when the slider assembly is in the molding position.

Furthermore, the butt joint part is a positioning pin, and a clamping groove matched with the positioning pin in a clamping mode is formed in the insert.

Furthermore, the butt joint part is cylindrical, a cavity is formed in one side, close to the insert, of the cylindrical part, and at least part of the insert can be contained in the cavity.

Furthermore, the sliding assembly further comprises a limiting piece connected with the sliding piece and an inclined guide post connected with the limiting piece, and at least part of the inclined guide post extends into the upper die assembly;

the inclined guide post is obliquely arranged.

Furthermore, the inclined guide post is obliquely arranged from top to bottom from the direction close to the sliding part to the direction far away from the sliding part.

Further, the mould also comprises a thimble assembly which is butted with the lower mould core so as to eject a product, and the thimble assembly comprises at least one thimble.

Further, the mould still includes reset assembly, reset assembly includes the release link and overlaps and establish spring on the release link.

Furthermore, the die also comprises a heat insulation piece arranged on the lower die core, and the heat insulation piece is made of FR-4 epoxy resin.

Furthermore, the mould also comprises a locking assembly which is used for fixedly connecting the upper mould assembly and the lower mould assembly.

The invention has the beneficial effects that: the sliding assembly and the insert are arranged in a die with threads for integrally forming a product, and the sliding assembly is provided with a forming position and a demoulding position; when the slip subassembly was located the shaping position, the slip subassembly was held and is fixed with the inserts card, and when the slip subassembly was located the drawing of patterns position, the slip subassembly separated with the inserts, and the inserts was taken out with the product after the shaping together, took out the inserts in the product through other structures to can enough form the product that has the screw tooth, can not lead to the fact the damage to fashioned product again when taking out the inserts after the product drawing of patterns, need not later stage manual repair, and then improve work efficiency and production efficiency.

The foregoing description is only an overview of the technical solutions of the present invention, and in order to make the technical solutions of the present invention more clearly understood and to implement them in accordance with the contents of the description, the following detailed description is given with reference to the preferred embodiments of the present invention and the accompanying drawings.

Drawings

Fig. 1 is a schematic structural view of a mold with a screw thread for integrally molding a product according to the present invention.

Fig. 2 is an exploded view of the mold shown in fig. 1.

Fig. 3 is a partial structural view of the mold shown in fig. 1.

Fig. 4 is a partial structural view of the mold shown in fig. 2.

Fig. 5 is a schematic view of a product formed by the mold shown in fig. 1.

Detailed Description

The following detailed description of embodiments of the present invention is provided in connection with the accompanying drawings and examples. The following examples are intended to illustrate the invention but are not intended to limit the scope of the invention.

Referring to fig. 1 to 5, a mold 100 with a screw thread for integrally molding a product according to a preferred embodiment of the present invention is used to interface with an external injection molding machine to form a product 200 with a screw thread hole 201. Specifically, the mold 100 includes an upper mold assembly 1, a lower mold assembly 2 abutting against the upper mold assembly 1, and a pin assembly 5 for ejecting a molded product 200. The upper mold assembly 1 includes an upper mold core 13, the lower mold assembly 2 includes a lower mold core 24 butted with the upper mold core 13, and the upper mold core 13 and the lower mold core 24 are mutually matched to form a containing cavity (not numbered) and a cavity 3 for molding the product 200. Injecting required rubber materials into the cavity 3, ejecting at least part of the product 200 out of the cavity 3 through the ejector pin assembly 5 after the product 200 in the cavity 3 is molded, so that a worker can take out the whole product 200 conveniently.

The upper die assembly 1 further includes an upper die base 11, an upper die plate 12, and a sprue channel 14 extending through the upper die plate 12 and the upper die core 13. Wherein, the upper die base 11, the upper die plate 12 and the upper die core 13 are connected in sequence from top to bottom. The runner duct 14 is used to guide the glue required for forming the product 200 into the cavity 3. Go up and run through on the mould base 11 and be provided with the holding ring 15 with runner 14 butt joint, when needs shaping product 200, correspond with the fort position of outside injection molding machine through holding ring 15 to the direction fort makes the injection molding machine can be accurate inject the sizing material into die cavity 3 through holding ring 15 and runner 14, convenient and fast. Note that, in the present embodiment, the runner duct 14 is provided separately and penetrates through the upper mold plate 12. In other embodiments, the runner duct 14 may be integrally formed with the upper mold plate 12, and is not limited thereto.

The lower die assembly 2 comprises a lower die base 21, lower die cushion blocks 23 vertically arranged on two sides of the lower die base 21 correspondingly, and a lower die plate 22 arranged on the lower die cushion blocks 23. The two lower die cushion blocks 23 play a supporting role, and the two lower die cushion blocks 23, the lower die plate 22 and the lower die base 21 are arranged together in an enclosing manner to form an accommodating space 25. In this embodiment, the ejector pin assembly 5 is accommodated in the accommodating space 25, so that the occupied space of the ejector pin assembly 5 is minimized, thereby reducing the overall volume of the mold 100.

Specifically, the thimble assembly 5 includes a thimble base plate 51, a thimble pad 52 fixedly disposed on the thimble base plate 51, and at least one thimble 53 disposed on the thimble pad 52. The thimble 53 is provided with a hanging pin, and the thimble 53 penetrates through the thimble base plate 51, so that the thimble 53 can push the product 200 out of the cavity 3 without being separated from the thimble base plate 51. In the present embodiment, the ejector pin assembly 5 includes a plurality of ejector pins 53 to better eject the product 200. In other embodiments, the number of the ejector pins 53 may be other, as long as the product 200 can be ejected, and the number of the ejector pins 53 is not specifically limited herein.

In this embodiment, the product 200 has two screw teeth features, the product 200 is made of an iron-based nickel alloy through an MIM process, and the hardness of the product 200 after the sintering process is completed can reach HRC60 °, so that the two screw teeth holes cannot be machined and tapped subsequently according to a conventional process, and the two screw teeth holes must be machined in the process of forming the product 200, so that the product can be directly used after subsequent sintering. In addition, in this embodiment, besides that the two thread holes are located on the same side of the product 200, one side of the product 200 having the threads also has other characteristics, and the remaining space is small, so that other components cannot be placed for the thread twisting and core pulling procedure. Thus, in order to be able to mold a product 200 having a screw thread, the mold 100 further comprises a sliding assembly 6 disposed at least partially in the housing cavity and an insert 7 disposed at least partially in the cavity 3 to cooperate to form the product 200. The insert 7 is provided with threads, the sliding assembly 6 is provided with a forming position and a demoulding position, and when the sliding assembly 6 is located at the forming position, the sliding assembly 6 and the insert 7 are clamped to fix the insert 7; when the slide assembly 6 is in the demolding position, the slide assembly 6 is separated from the insert 7. In the process of molding the product 200, when the sliding assembly 6 is located at the molding position, the insert 7 is fixed with the sliding assembly 6, part of the insert 7 is arranged in the cavity 3, glue is injected into the cavity 3 through the sprue runner 14, after the product 200 is molded, the sliding assembly 6 is moved from the molding position to the demolding position, the ejector pin assembly 5 ejects the molded product 200 and at least part of the insert 7 fixed with the product 200 to the outside of the cavity 3, a subsequent worker takes out the insert 7 through a special tool, a complete product 200 with threads can be obtained, damage marks cannot be caused to the product 200, later-stage manual repair is not needed, and therefore working efficiency and production efficiency are improved. It should be noted that, in order to prevent the worker from touching the lower mold core 24 when taking out the insert 7, a heat insulating member (not numbered) is further disposed on the lower mold core 24, and in this embodiment, the heat insulating member is made of FR-4 epoxy resin.

In particular, the sliding assembly 6 comprises a slide arranged around the moulding cavity 3. In the present embodiment, three sliders are provided, and for convenience of description, the three sliders are defined as a first slider 61 and a second slider 62, and a third slider 63. Wherein the side of the first slide 61 facing the mould cavity 3 has at least one abutment. In the present embodiment, since two thread holes are required in the product 200, the inserts 7 are provided in two, and therefore, the first slider 61 is provided with two abutting portions, which are also defined as a first abutting portion 611 and a second abutting portion 612 for convenience of description, and the two inserts 7 are respectively defined as a first insert 71 and a second insert 72. In this embodiment, the first mating portion 611 is a positioning pin 611, the first insert 71 is provided with a slot 711 that is in clamping fit with the positioning pin 611, and when the sliding assembly 6 is located at the molding position, the first insert 71 and the slot 711 of the positioning pin 611 are in clamping and mating fit to realize fixation; the second docking portion 612 is cylindrical, a cavity 6121 is formed on a side of the cylindrical second docking portion 612, which is close to the second insert 72, and when the sliding assembly 6 is located at the molding position, at least a portion of the second insert 72 can be received in the cavity 6121. When the sliding assembly 6 moves from the molding position to the demolding position, the first insert 71 and the second insert 72 are respectively mounted on the positioning pin 611 and the cylindrical butting portion, and after a required rubber material flows into the cavity 3 through the sprue runner 14 and is molded, the first insert 71 and the second insert 72 are molded together with the rubber material; the at least partially molded product 200 is ejected out of the cavity 3 by the ejector pin assembly 5, and the worker takes out the product 200 with the first insert 71 and the second insert 72 together, and separates the first insert 71 and the second insert 72 from the product 200 by using a specialized tool, thereby obtaining the product 200 with threads to be integrally molded. It should be noted that, in order to enable the product 200 to be inserted into the product 200 and taken out together when the product 200 is molded, one end of the first insert 71 and one end of the second insert 72, which are away from the cavity 3, are abutted against the abutting portion, in this embodiment, the first insert 71 is sleeved on the positioning pin 611, and one end of the second insert 72 is disposed in the cavity 6121. In order to prevent the second insert 72 from being horizontal when the second insert 72 is placed in the cavity 6121, in this embodiment, the length of the second insert 72 may be set to just form the thread on the product 200, which is not described in detail herein.

The sliding assembly 6 further comprises a limiting piece connected with the sliding piece and an inclined guide post connected with the limiting piece, and at least part of the inclined guide post is obliquely arranged and extends into the upper die assembly 1. Since there are three sliding members, the limiting members include a first limiting member 64 connected to the first sliding member 61, a second limiting member 65 connected to the second sliding member 62, and a third limiting member 66 connected to the third sliding member 63; the inclined guide post comprises a first inclined guide post 67 obliquely arranged and connected with the first limiting member 64 and the upper die assembly 1, a second inclined guide post 68 obliquely arranged and connected with the second limiting member 65 and the upper die assembly 1, and a third inclined guide post 69 obliquely arranged and connected with the third limiting member 66 and the upper die assembly 1. The first position-limiting member 64, the second position-limiting member 65 and the third position-limiting member 66 are used to prevent the first angle guide post 67, the second angle guide post 68 and the third angle guide post 69 from rotating when the upper die assembly 1 is separated from the lower die assembly 2. Specifically, when the molded product 200 needs to be demolded, under the action of an external force, the upper die assembly 1 is separated from the lower die assembly 2, and because the first inclined guide pillar 67 is obliquely arranged in the upper die assembly 1 and the first limiting piece 64, the upper die assembly 1 moves upward, so that the first limiting piece 64 drives the first sliding piece 61 to move in the accommodating cavity toward the direction away from the cavity 3; similarly, the upper die assembly 1 moves upward to enable the second limiting member 65 to drive the second sliding member 62 to move towards the direction away from the cavity 3, and the third sliding member 63 moves towards the direction away from the cavity 3, so that the first insert 71 and the second insert 72 are separated from the first sliding member 61, and the first insert 71 and the second insert 72 are ejected out of the cavity 3 by the ejector pin assembly 5 along with the product 200, thereby completing the demolding. This kind of structure makes the product 200 integrated into one piece of drawing of patterns, and the surface can not receive the damage, need not artifical the repairing in later stage, can guarantee the quality of product 200. In this embodiment, the first and second tilt guide posts 67, 68 and the third tilt guide post 69 are all disposed from top to bottom in a tilted manner from the position close to the slider to the position away from the slider, and two first tilt guide posts 67 are provided, one second tilt guide post 68 is provided, and one third tilt guide post 69 is also provided. In other embodiments, the number of the first and second oblique guide posts 67, 68, and 69 may be other, and is not limited herein.

The mold 100 further includes a reset assembly 8 disposed in the accommodating space 25, and the reset assembly 8 includes a reset rod 81 and a reset spring 82 sleeved on the reset rod 81. In particular, the application of the reset assembly 8 to the mold 100 is of conventional construction and will not be described in any greater detail herein.

The mold 100 further includes a guide assembly 9 for guiding the relative positions of the upper and lower mold assemblies 1 and 2 and a locking assembly 10 for fixedly connecting the upper and lower mold assemblies 1 and 2. The guide assembly 9 includes at least one guide bar 91 for ensuring that the upper and lower die assemblies 1 and 2 are not misaligned when butted, thereby ensuring the quality of the product 200 formed by the mold 100. The purpose of the locking assembly 10 is that when the mold 100 needs to be put in storage, the upper mold assembly 1 and the lower mold assembly 2 can be butted and locked through the locking assembly 10, so that the assembly precision of the mold 100 can be ensured, and the damage to the internal elements of the mold 100 can be avoided. In this embodiment, the number of the guide rods 91 is set to 4, and the 4 guide rods 91 are respectively arranged at four corners of the mold 100, so that the upper mold assembly 1 and the lower mold assembly 2 are better matched when being butted. Indeed, in other embodiments, the number and the position of the guide rods 91 may be other, and are not limited specifically herein, depending on the actual situation. In this embodiment, the guiding assembly 9 and the locking assembly 10 are both conventional structures, and are not described herein.

In summary, the following steps: through setting up sliding assembly 6 and inserts 7, sliding assembly 6 is when being located the shaping position, sliding assembly 6 and inserts 7 card are held and are fixed with inserts 7, when sliding assembly 6 is located the drawing of patterns position, sliding assembly 6 and inserts 7 separation, inserts 7 together take out with the product 200 after the shaping, insert 7 in with product 200 takes out through other instruments, thereby can enough form the product 200 that has the screw tooth, can not cause the damage to fashioned product 200 when taking out inserts 7 after the product 200 drawing of patterns again, need not later stage manual repair, and then improve work efficiency and production efficiency.

The technical features of the embodiments described above may be arbitrarily combined, and for the sake of brevity, all possible combinations of the technical features in the embodiments described above are not described, but should be considered as being within the scope of the present specification as long as there is no contradiction between the combinations of the technical features.

The above-mentioned embodiments only express several embodiments of the present invention, and the description thereof is more specific and detailed, but not construed as limiting the scope of the invention. It should be noted that, for a person skilled in the art, several variations and modifications can be made without departing from the inventive concept, which falls within the scope of the present invention. Therefore, the protection scope of the present patent shall be subject to the appended claims.

Claims

1. The utility model provides a take mould of screw tooth with integrated into one piece product which characterized in that includes:

the upper die assembly comprises an upper die core;

2. The mold of claim 1, wherein the slide assembly comprises a slide disposed about the cavity;

3. The mold of claim 2, wherein the abutment is a locating pin, and the insert is provided with a slot for retaining the locating pin.

4. The mold of claim 2, wherein the abutment is cylindrical, and wherein a side of the cylindrical shape disposed adjacent the insert has a cavity into which at least a portion of the insert is receivable.

5. The mold of claim 2, wherein the slide assembly further comprises a stop coupled to the slide and a cam post coupled to the stop, at least a portion of the cam post extending into the upper mold assembly;

the inclined guide post is obliquely arranged.

6. The mold of claim 5, wherein the angle guide post is inclined from top to bottom from near the slide to far from the slide.

7. The mold of claim 1 further comprising a pin assembly interfacing with said lower mold core for ejecting a product, said pin assembly including at least one pin.

8. The mold of claim 1, further comprising a return assembly, wherein the return assembly comprises a return rod and a spring disposed about the return rod.

9. The mold of claim 8, further comprising a heat insulation member disposed on the lower mold core, wherein the heat insulation member is made of FR-4 epoxy resin.

10. The mold of claim 1, further comprising a locking assembly for fixedly connecting the upper and lower die assemblies.