CN115230066A

CN115230066A - Integrative cutting device that moulds plastics of soft materials

Info

Publication number: CN115230066A
Application number: CN202210906896.4A
Authority: CN
Inventors: 陈志勇
Original assignee: Guangzhou Fusheng Plastic Co ltd
Current assignee: Guangzhou Fusheng Plastic Co ltd
Priority date: 2022-07-29
Filing date: 2022-07-29
Publication date: 2022-10-25

Abstract

The invention relates to an integrated injection molding and cutting device for soft materials, which comprises a rack and a mold body, wherein a material support for placing the soft materials is arranged on the rack. The die body is arranged on the rack and comprises a front die assembly and a rear die assembly, the front die assembly comprises a front template, a front die insert is arranged on the front template, and a cutting insert is arranged on the front die insert; the rear die assembly comprises a rear template, a rear die insert is arranged on the rear template, and the front die insert and the rear die insert are matched to form an injection molding cavity in the die closing state of the front die assembly and the rear die assembly; the rear mould component also comprises an ejector pin component, and the ejector pin component comprises an ejector pin rod used for ejecting an injection molding product in the injection molding cavity and an ejector pin plate used for pushing the ejector pin rod to move. The integrated injection molding and cutting device for the soft materials can realize direct integrated injection molding and cutting operation of the soft materials on the same equipment, is simple and convenient to operate, and is beneficial to reducing the investment of the equipment, improving the operation efficiency and improving the economic benefit.

Description

Integrative cutting device that moulds plastics of soft materials

Technical Field

The invention relates to the technical field of injection molding and cutting equipment, in particular to an integrated injection molding and cutting device for soft materials.

Background

In a conventional two-shot molding process, a part is usually injection molded, and then the part is placed in a mold of another part for injection molding, so as to make the shape and process of the plastic product meet the desired requirements. However, the conventional injection molding process requires multiple steps for injection molding, and requires multiple molds and devices to cooperate with each other, which results in complex operation, low operation efficiency and high processing cost.

In addition, to carrying out the secondary if hang materials such as cloth, adhesive tape and mould plastics, traditional mould equipment is difficult to realize directly moulding plastics and cutting on hanging the cloth, hangs the cloth and can't provide the cut-off knife and cut required holding power, causes easily to hang cloth tear or product deformation scheduling problem at the cutting in-process. The general operation is to cut the soft material by injection molding or prepare the soft material with corresponding shape directly, put the soft material into a specific mold to gather, and then inject another material on the soft material to bond the two materials into a whole. Such an operation increases the number of injection molds and cutting molds, and has a high occupancy rate of a field space, a high cost, and a low working efficiency.

Disclosure of Invention

Therefore, in order to solve the above problems, a need exists to provide an integrated injection molding and cutting device for soft materials, which can realize direct integrated injection molding and cutting operations of soft materials on the same equipment, is simple and convenient to operate, and is beneficial to reducing the investment of equipment, improving the operation efficiency and improving the economic benefit.

The technical scheme is as follows:

on the one hand, provide a cutting device is moulded plastics to soft materials an organic whole, include:

the device comprises a rack, wherein a material bracket for placing soft materials is arranged on the rack;

the mould comprises a mould body, a front mould assembly and a rear mould assembly, wherein the mould body is arranged on the rack and comprises a front mould assembly and a rear mould assembly, the front mould assembly comprises a front mould plate, a front mould insert is arranged on the front mould plate, and a cutting insert is arranged on the front mould insert; the rear die assembly comprises a rear template, a rear die insert is arranged on the rear template, and the front die insert and the rear die insert are matched to form an injection molding cavity in the die assembly state of the front die assembly and the rear die assembly; the rear mould component also comprises an ejector pin component, and the ejector pin component comprises an ejector pin rod used for ejecting the injection product in the injection molding cavity and an ejector pin plate used for pushing the ejector pin rod to move.

The technical solution is further explained below:

in one embodiment, the edge of the cut-off knife insert is provided with an overflow edge groove, and when the front mold insert is matched with the rear mold insert, the overflow edge groove is communicated with the injection molding cavity.

In one embodiment, the soft material is hanging cloth, and the material support comprises a winding drum support for placing a hanging cloth winding drum for processing and a waste material support for collecting the processed hanging cloth waste material.

In one embodiment, the material support further comprises a connecting bracket disposed between the spool support and the waste support.

In one embodiment, the front mold assembly is further provided with a heat insulation plate, a panel and a runner plate in sequence, the front mold plate is arranged on one side of the runner plate, which is far away from the panel, a hot runner is arranged in the runner plate, and the hot runner is communicated with the injection molding cavity.

In one embodiment, a cold runner is arranged on the front mold plate and is arranged between the hot runner and the injection mold cavity.

In one embodiment, a driving screw is arranged on one side of the front template, which faces the rear template, and the front template is in sliding connection with the driving screw.

In one embodiment, the rear mold assembly further comprises a base plate, the ejector pin members and the rear mold plate being arranged in sequence, the ejector pin plates being arranged toward a side of the base plate, the ejector pin rods being arranged toward the rear mold plate; the bottom plate and the rear template are arranged at intervals through square iron, and the ejector pin component is movably arranged between the bottom plate and the rear template.

In one embodiment, the front mold assembly is provided with a buckling base member, and the rear mold assembly is provided with a buckling substrate which is in buckling fit with the buckling base member.

In one embodiment, the mold body is further provided with a mechanical shutter, the mechanical shutter comprises a lock cylinder and a lock catch seat which are matched and locked with each other, the lock cylinder is arranged on the front mold assembly, and the lock catch seat is arranged on the rear mold.

The invention has the beneficial effects that:

compared with the prior art, the integrated injection molding and cutting device for the soft materials, provided by the invention, is characterized in that the soft materials for processing are placed on the material support, the soft materials are taken down from the material support and placed between the front mold assembly and the rear mold assembly before the front mold assembly and the rear mold assembly of the mold assembly are closed, and the front mold insert and the rear mold insert extrude the hanging cloth into a shape corresponding to an injection molding cavity when the front mold assembly and the rear mold assembly are closed. Then injecting another material in a molten state into the injection mold cavity, so that the other material and the soft material, namely the hanging cloth, are integrally molded to form an injection molding product. And finally, opening the front die assembly and the rear die assembly, and pushing the ejector pin rod by using the ejector pin plate, so that the ejector pin rod extrudes the injection product in the injection molding cavity towards the cut-off insert, and the injection product is cut out from the hanging cloth in a specific shape through the cut-off insert. Through the operation, can realize two kinds of soft materials's direct integrative injection moulding and cut the operation on same mould, easy operation is convenient, can ensure bonding strength between two kinds of materials, guarantees product quality, is favorable to reducing the input of equipment moreover, improves the operating efficiency, improves economic benefits.

Drawings

The accompanying drawings, which are incorporated in and constitute a part of this application, illustrate embodiments of the invention and, together with the description, serve to explain the invention and not to limit the invention.

In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the drawings needed to be used in the description of the embodiments will be briefly introduced below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and it is obvious for those skilled in the art to obtain other drawings based on these drawings without creative efforts.

FIG. 1 is a schematic structural diagram of an integrated injection molding and cutting device for soft materials according to an embodiment;

FIG. 2 is a schematic view showing a clamped state of a mold body according to an embodiment;

FIG. 3 is a schematic view illustrating an open state of the mold body according to an embodiment;

FIG. 4 is a schematic view illustrating an open state of the mold body according to an embodiment;

FIG. 5 is a schematic view illustrating an open state of the mold body according to an embodiment;

FIG. 6 is a schematic diagram of a front mold assembly in one embodiment;

FIG. 7 is a schematic diagram of the construction of a rear mold assembly in one embodiment;

FIG. 8 is a schematic view of a runner injection molding configuration according to an embodiment;

FIG. 9 is a schematic structural view of injection molding of a product according to an embodiment.

Description of reference numerals:

100. a front mold assembly; 110. a front template; 120. a front mold insert; 130. a cutter insert; 131. an overflow edge groove; 140. a heat insulation plate; 150. a panel; 160. a runner plate; 161. a hot runner; 170. a cold runner; 180. plugging and screwing screws; 200. a rear mold assembly; 210. a rear template; 220. a rear mold insert; 230. a thimble member; 231. a thimble rod; 232. an ejector plate; 240. a base plate; 250. square iron; 300. injection molding a cavity; 410. a fastening base member; 420. buckling a substrate; 510. a lock cylinder; 520. a lock catch seat; 600. injection molding a product; 700. hanging cloth; 710. hanging a cloth reel; 720. hanging cloth waste; 800. a frame; 910. a spool support; 920. a waste holder; 930. and connecting the bracket.

Detailed Description

In order to make the aforementioned objects, features and advantages of the present invention comprehensible, embodiments accompanied with figures are described in detail below. In the following description, numerous specific details are set forth in order to provide a thorough understanding of the present invention. This invention may, however, be embodied in many different forms and should not be construed as limited to the embodiments set forth herein, as those skilled in the art will recognize without departing from the spirit and scope of the present invention.

In the description of the present invention, it should be noted that the terms "inside", "outside", "upper", "lower", "horizontal", and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings or orientations or positional relationships conventionally put in use of products of the present invention, and are only for convenience of description and simplicity of description, but do not indicate or imply that the devices or elements referred to must have a specific orientation, be constructed in a specific orientation, and be operated, and thus, should not be construed as limiting the present invention. Furthermore, the terms "first," "second," "third," "fourth," and the like are used merely to distinguish one description from another, and are not to be construed as indicating or implying relative importance.

In the present invention, unless otherwise expressly stated or limited, the terms "mounted," "connected," "secured," "attached," and the like are to be construed broadly and can, for example, be fixedly connected, detachably connected, or integrally formed; can be mechanically or electrically connected; they may be directly connected or indirectly connected through intervening media, or they may be connected internally or in any other suitable relationship, unless expressly stated otherwise. The specific meanings of the above terms in the present invention can be understood by those skilled in the art according to specific situations.

As shown in fig. 1 to 9, in an embodiment, an integrated injection molding and cutting device for soft materials is provided, which includes a frame 800 and a mold body, wherein a material support for placing the soft materials is provided on the frame 800. The die body is arranged on the frame 800, the die body comprises a front die assembly 100 and a rear die assembly 200, the front die assembly 100 comprises a front die plate 110, a front die insert 120 is arranged on the front die plate 110, and a cutting insert 130 is arranged on the front die insert 120. The rear mold assembly 200 comprises a rear mold plate 210, a rear mold insert 220 is arranged on the rear mold plate 210, and the front mold insert 120 and the rear mold insert 220 are matched to form an injection molding cavity 300 under the mold closing state of the front mold assembly 100 and the rear mold assembly 200. The rear mold assembly 200 further includes an ejector pin member 230, and the ejector pin member 230 includes an ejector pin 231 for ejecting the injection product 600 in the injection mold cavity 300 and an ejector plate 232 for pushing the ejector pin 231 to move.

In this embodiment, a soft material to be processed is placed on a material holder, and before the front mold assembly 100 and the rear mold assembly 200 of the mold assembly are closed, the soft material, for example, the cloth 700, is taken out of the material holder and placed between the front mold assembly 100 and the rear mold assembly 200, and when the front mold assembly 100 and the rear mold assembly 200 are closed, the cloth 700 is extruded into a shape corresponding to the injection cavity 300 by the front mold insert 120 and the rear mold insert 220. Then, another material in a molten state is injected into the injection cavity 300, so that the other material and the soft material, i.e., the cloth 700, are integrally molded to form the injection product 600. Finally, the front mold assembly 100 and the rear mold assembly 200 are opened, the ejector pin 231 is pushed by the ejector plate 232, so that the ejector pin 231 presses the injection product 600 in the injection cavity 300 toward the cutting insert 130, and the injection product 600 is cut out from the hanging cloth 700 in a specific shape by the cutting insert 130. Through the operation, can realize two kinds of soft materials's direct integrative injection moulding and cut the operation on same mould, easy operation is convenient, can ensure bonding strength between two kinds of materials, guarantees product quality, is favorable to reducing the input of equipment moreover, improves the operating efficiency, improves economic benefits.

In one embodiment, the material support comprises a roll support 910 for placing a cloth hanging roll 710 for processing, and a waste support 920 for collecting the processed cloth hanging waste 720. Further, the material support further comprises a connecting support 930, and the connecting support is arranged between the reel support 910 and the waste support 920 to realize the effects of carrying and turning the hanging cloth 700 and the like. In practical operation, the connecting bracket 930 may be provided in plural, so that the position between the cloth hanging reel 710 and the cloth hanging waste 720 can be flexibly designed to avoid occupying too much operation space.

Specifically, as shown in fig. 1, the hanging cloth winding drum 710 is arranged above the rack so that an operator can charge and observe the use progress of the materials in real time, and the hanging cloth waste 720 is arranged below the inside of the rack and does not occupy too much operation space.

In this embodiment, the material support is provided with a roller (not shown) for winding the cloth 700 or placing a roll of the cloth 700. Of course, in addition to the embodiment, the processed soft material is not limited to the hanging cloth 700, and other soft materials such as plastic cloth may also be adopted, and correspondingly, the structure of the material support may also be designed according to the corresponding soft material, and such designs all fall within the protection scope of the present invention.

In one embodiment, the edge of the cutting insert 130 is provided with an overflow groove 131, and the overflow groove 131 communicates with the injection cavity 300 when the front mold insert 120 is coupled with the rear mold insert 220. When the cutting is finished during injection molding, the injection molding product 600 is injected on the hanging cloth 700, and the hanging cloth 700 is soft and thin, so that the cutting difficulty is high on the hanging cloth 700, the shape of the cut product is unstable, and the processing quality of the whole product is affected. By arranging the overflow groove 131 at the edge of the cutting insert 130, the actual area of the injection molded product 600 is larger than the cutting area of the cutting knife on the cutting insert 130 after the injection molding is completed. When the cutting machine cuts, the cutting knife cuts on the injection molding colloid, the hardness of the colloid is much larger than that of the hanging cloth 700, so that the cutting difficulty is greatly reduced, and the quality of a cut product can be effectively guaranteed.

In one embodiment, the front mold assembly 100 further comprises a heat insulation plate 140, a face plate 150 and a runner plate 160, and the front mold plate 110 is disposed on a side of the runner plate 160 facing away from the face plate 150. Specifically, the runner plate 160 is provided therein with a hot runner 161, the hot runner 161 is communicated with the injection cavity 300, and the injection cavity 300 is filled with the material through the hot runner 161.

Further, the cold runner 170 is arranged on the front template 110, the cold runner 170 is arranged between the hot runner 161 and the injection molding cavity 300, a glue feeding mode that the hot runner 161 and the cold runner 170 are combined is adopted, materials of the runner and a sprue can be guaranteed to be in a molten state, feeding is guaranteed to be smooth, then the cooled materials are enabled to be solidified and bonded on the hanging cloth 700 through the cold runner 170, and therefore the cutting machine is beneficial to guaranteeing that redundant materials on the cold runner 170 can provide supporting force and guaranteeing cutting to be smooth. In practical applications, the overflow trough 131 communicates with the cold runner 170 and provides a cutting support after solidification.

Furthermore, the front mold insert 120 may be disposed in a plurality of numbers, and the rear mold insert 220 is disposed correspondingly, that is, the injection mold cavity 300 may be disposed in a plurality of numbers, so as to achieve simultaneous injection molding and cutting of a plurality of products, thereby improving the processing efficiency. In practical operation, four front mold inserts 120 are provided, and every two front mold inserts 120 are connected through the cold runner 170 and connected to the hot runner 161, and the material flows into the cold runner 170 through the hot runner 161 and then is divided into two injection mold cavities 300. Of course, the number of the injection cavities 300, and the number and arrangement of the cold runners 170 and the hot runners 161 are not specifically limited in the present invention, as long as the material and the hanging cloth 700 can be integrally injection molded and integrally cut, and such designs all belong to the protection scope of the present invention.

In one embodiment, the front mold plate 110 is provided with a setscrew 180 on a side facing the rear mold plate 210, and the front mold plate 110 is slidably coupled to the setscrew 180. As shown in fig. 3, when the mold is opened, the front mold plate 110 remains attached to the rear mold plate 210, and the heat insulation plate 140, the face plate 150 and the runner plate 160 move towards the side away from the rear mold plate 210 relative to the front mold plate 110 through the tucking screw 180, so as to reserve a discharge space for the cut product.

In one embodiment, the rear mold assembly 200 further includes a base 240, the ejector pin members 230, and the rear mold plate 210 being arranged in sequence, the ejector pin plate 232 being arranged toward the side of the base 240, and the ejector pins 231 being arranged toward the rear mold plate 210. Specifically, the bottom plate 240 and the rear mold plate 210 are spaced apart from each other by a square iron 250, and the ejector pin member 230 is movably disposed between the bottom plate 240 and the rear mold plate 210. As shown in fig. 4, during mold opening, the ejector plate 232 drives the ejector rod 231 to move towards the rear mold plate 210, the ejector rod 231 extrudes the injection molded product 600 toward the cutting insert 130, and the cut injection molded product 600 passes through the front mold plate 110 and falls off from the discharge space between the front mold plate 110 and the runner plate 160, thereby completing cutting and discharging.

As shown in fig. 5, after the cutting is completed, the front mold plate 110 and the rear mold plate 210 are separated, the hanging cloth 700 is moved so that a new hanging cloth 700 enters between the front mold plate 110 and the rear mold plate 210, and the injection molding cutting operation is repeated.

In one embodiment, the front mold assembly 100 is provided with a fastening base member 410, and the rear mold assembly 200 is provided with a fastening base plate 420 which is in fastening fit with the fastening base member 410, so as to fasten and fix the front mold assembly 100 and the rear mold assembly 200 and ensure the stability of injection molding.

Further, a mechanical shutter is further arranged on the mold body, the mechanical shutter comprises a lock cylinder 510 and a lock catch seat 520 which are matched with each other for locking, the lock cylinder 510 is arranged on the front mold assembly 100, and the lock catch seat 520 is arranged on the rear mold. The front mold assembly 100 and the rear mold assembly 200 are further locked through a mechanical shutter, so that the whole mold body is kept stable in the injection molding process, and the injection molding quality is guaranteed.

The above examples only show some 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 should be subject to the appended claims.

Claims

1. The utility model provides an integrative cutting device that moulds plastics of soft materials which characterized in that includes:

the device comprises a rack (800), wherein a material support for placing soft materials is arranged on the rack (800);

the die comprises a die body, wherein the die body is arranged on the rack (800), the die body comprises a front die assembly (100) and a rear die assembly (200), the front die assembly (100) comprises a front die plate (110), a front die insert (120) is arranged on the front die plate (110), and a cutting insert (130) is arranged on the front die insert (120); the rear die assembly (200) comprises a rear die plate (210), a rear die insert (220) is arranged on the rear die plate (210), and the front die insert (120) and the rear die insert (220) are matched to form an injection molding cavity (300) in the die closing state of the front die assembly (100) and the rear die assembly (200); the rear mould assembly (200) further comprises an ejector pin component (230), and the ejector pin component (230) comprises an ejector pin rod (231) used for ejecting the injection product (600) in the injection mould cavity (300) and an ejector pin plate (232) used for pushing the ejector pin rod (231) to move.

2. The integrated injection molding and cutting device for soft materials as claimed in claim 1, wherein an overflow groove (131) is formed on an edge of the cutting insert (130), and when the front mold insert (120) is engaged with the rear mold insert (220), the overflow groove (131) is communicated with the injection mold cavity (300).

3. The integrated injection molding and cutting device for soft materials as claimed in claim 1, wherein the soft material is a hanging cloth (700), and the material support comprises a drum support (910) for placing a hanging cloth drum (710) for processing, and a waste support (920) for collecting waste hanging cloth (720) after processing.

4. The integrated injection molding and cutting device for soft materials as claimed in claim 3, wherein the material support further comprises a connecting support (930), and the connecting support (930) is disposed between the spool support (910) and the waste support (920).

5. The integrated injection molding and cutting device for soft materials as claimed in claim 1, wherein a heat insulation plate (140), a face plate (150) and a runner plate (160) are sequentially arranged on the front mold assembly (100), the front mold plate (110) is arranged on a side of the runner plate (160) away from the face plate (150), a hot runner (161) is arranged in the runner plate (160), and the hot runner (161) is communicated with the injection mold cavity (300).

6. The integrated injection molding and cutting device for soft materials as claimed in claim 5, wherein a cold runner (170) is provided on the front mold plate (110), and the cold runner (170) is disposed between the hot runner (161) and the injection mold cavity (300).

7. An integrated injection molding and cutting device for soft materials as claimed in claim 1, wherein a tucking screw (180) is provided on a side of the front mold plate (110) facing the rear mold plate (210), and the front mold plate (110) is slidably connected to the tucking screw (180).

8. An integrated injection molding and cutting device for soft materials according to claim 1, wherein the rear mold assembly (200) further comprises a bottom plate (240), the ejector pin member (230) and the rear mold plate (210) are sequentially arranged, the ejector pin plate (232) is arranged towards one side of the bottom plate (240), and the ejector pin rod (231) is arranged towards the rear mold plate (210);

the bottom plate (240) and the rear template (210) are arranged at intervals through square irons (250), and the ejector pin component (230) is movably arranged between the bottom plate (240) and the rear template (210).

9. The integrated injection molding and cutting device for soft materials as claimed in claim 1, wherein a buckling base member (410) is provided on the front mold assembly (100), and a buckling substrate (420) in buckling fit with the buckling base member (410) is provided on the rear mold assembly (200).

10. The integrated injection molding and cutting device for soft materials as claimed in claim 1, wherein a mechanical shutter is further disposed on the mold body, the mechanical shutter comprises a lock cylinder (510) and a lock catch seat (520) which are locked together, the lock cylinder (510) is disposed on the front mold assembly (100), and the lock catch seat (520) is disposed on the rear mold.