CN214982615U

CN214982615U - Rubber mold

Info

Publication number: CN214982615U
Application number: CN202120623406.0U
Authority: CN
Inventors: 黄大风; 毛伟飞
Original assignee: Zhejiang Xuetai Stationery Co ltd
Current assignee: Zhejiang Xuetai Stationery Co ltd
Priority date: 2021-03-26
Filing date: 2021-03-26
Publication date: 2021-12-03
Anticipated expiration: 2031-03-26

Abstract

The utility model discloses a rubber mold aims at solving and adopts the mode of moulding plastics to produce the rubber now, and the die sinking cost is high, the relatively poor not enough of economic nature. The utility model discloses a mould body of arranging including a plurality of arrays, the shape of mould body corresponds with the rubber and is formed with the open molding chamber in top, is equipped with a plurality of caves in or protruding on the bottom surface of molding chamber, sunken from the bottom up cross section grow gradually, protruding from the bottom up cross section diminishes gradually. By adopting the novel rubber production process, the rubber with concave and convex top surfaces, the Teflon coating and the draft angle can be produced at low cost, so that the demolding capacity of the mold is improved.

Description

Rubber mold

Technical Field

The utility model relates to a stationery production field, more specifically say, it relates to a rubber mold.

Background

The prior eraser production process is generally injection molding or extrusion. In any way, when the erasers with different shapes are produced, the extruder needs to be adjusted or the die needs to be opened again, the adjustment cost is high, and the eraser on the market is relatively single in shape indirectly. The rubber with irregular shape, especially the surface with concave-convex shape, can only be produced by adopting the injection molding process. In view of this, a new rubber production process with low mold opening cost and flexible production characteristic is needed.

The Chinese patent publication No. CN210308894U, entitled an injection molding machine for making erasers, discloses an injection molding machine for making erasers, and aims to solve the problem that the quality difference of the made erasers is large due to the fact that materials for making the erasers cannot be fully mixed. The key points of the technical scheme are as follows: the utility model provides an injection molding machine of preparation eraser, includes base and motor, be equipped with actuating mechanism and forming mechanism on the base, be equipped with cylindric barrel between actuating mechanism and the forming mechanism, be equipped with screw rod, its characterized in that in the barrel: the driving mechanism is characterized in that a mixing drum is arranged above the driving mechanism, a discharge hole communicated with the upper portion of the machine barrel is formed in the bottom of the mixing drum, a feed inlet is formed in the top end of the mixing drum, and a mixing rod and a plurality of heating plates are arranged in the mixing drum. The method has the defects of high mold opening cost and poor economy.

Disclosure of Invention

The utility model overcomes present adoption mode of moulding plastics production rubber, and die sinking cost is high, and the relatively poor not enough of economic nature provides a rubber mold, and it can greatly reduced manufacturing cost, reduces the die sinking cost to the abundance that provides the rubber shape.

In order to solve the technical problem, the utility model discloses a following technical scheme:

the utility model provides a rubber mold, includes the mould body that a plurality of arrays were arranged, the shape of mould body corresponds with the rubber and is formed with the open molding cavity in top, makes and is equipped with a plurality of caves in or protruding on the bottom surface of cavity, sunken from the bottom to big cross section grow gradually, protruding from the bottom up cross section diminishes gradually.

The structure is used for realizing a novel rubber manufacturing process, and 70 percent of plasticizer is used; pvc aleurone, 28%; calcium carbonate, 2% formulation, by the following steps: 1. stirring the raw materials into liquid; 2. mixing colors with colored color-adding paste; 3. dispensing on the die according to the design draft by a dispenser; 4. heating and forming through a drying oven; the structure similar to a reverse mold in the form can greatly reduce the production cost, reduce the requirement on an injection molding machine, reduce the production cost, facilitate large-scale production and have simple production expansion. The shaped rubber is embedded into a die body, and the side edges of the shaped rubber are blown out by high-pressure air. The structure can freely produce the concave or convex, and the combination and arrangement are in the designed shape. In order to avoid the liquid mixed liquid being unable to be pulled out after solidification, the cross section of the recess is gradually enlarged from bottom to large, and the cross section of the protrusion is gradually reduced from bottom to top. The eraser produced by the structure has the advantages that the bulges are small at the top and big at the bottom, and the depressions are big at the top and small at the bottom. Compared with the injection molding mode, the production of the water gap can be avoided, and the process of eliminating the water gap can be omitted.

Preferably, the surface of the molding cavity is provided with a Teflon coating. The structure reduces the force required by the rubber to be separated, so that the rubber is more easily separated.

Preferably, the molding cavity is provided with a draft angle. The structure enables the eraser to be separated more easily.

Preferably, the bottom of the molding cavity is provided with steps arranged along the circumferential direction at a position close to the inner wall, and a plastic concave ring is formed at the bottom of the molding cavity through the steps. The structure forms a model with high top surface outer edge and low inner edge on the eraser.

Preferably, the recess and the projection at the bottom of the molding cavity are formed with a molding shape. The structure enriches the shape of the eraser and can produce the die with low cost. The economic benefit is improved.

Preferably, the outer edge of each die extends out in the radial direction, a dovetail slide block is arranged on one side in the width or length direction of each die, a dovetail groove corresponding to each dovetail block is arranged on the other side of each die, and adjacent dies are detachably connected through the dovetail slide blocks and the dovetail grooves. The structure is used for producing the rubber in multiple batches, and the moulds corresponding to different shapes can be connected in parallel to produce together.

Preferably, the dovetail slide block of the mold is provided with a first vertical locking pin hole, the dovetail groove is provided with a second locking pin hole corresponding to the first locking pin hole, and the first locking pin hole and the second locking pin hole of the adjacent mold are matched and inserted with locking pins. The structure realizes the linkage between every two molds and improves the stability of connection.

Compared with the prior art, the beneficial effects of the utility model are that: (1) the novel eraser production process is adopted, and the eraser with the concave and convex top surface can be produced at low cost; (2) the Teflon coating and the die drawing angle are arranged, so that the demolding capacity of the die is improved.

Drawings

Fig. 1 is a top view of the mold of the present invention;

FIG. 2 is a cross-sectional view taken at A-A of FIG. 1;

FIG. 3 is a schematic view of the coupling of two molds according to the present invention;

in the figure:

the die comprises a die body 1, a recess 2, a protrusion 3, a Teflon coating 4, a step 5, a plastic concave ring 6, a dovetail slide block 7, a dovetail groove 8, a first locking pin hole 9, a second locking pin hole 10 and a locking pin 11.

Detailed Description

The present disclosure is further described with reference to the following drawings and examples.

It should be noted that the following detailed description is exemplary and is intended to provide further explanation of the disclosure. 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 application belongs.

It is noted that the terminology used herein is for the purpose of describing particular embodiments only and is not intended to be limiting of example embodiments according to the present application. As used herein, the singular forms "a", "an" and "the" are intended to include the plural forms as well, and it should be understood that when the terms "comprises" and/or "comprising" are used in this specification, they specify the presence of stated features, steps, operations, devices, components, and/or combinations thereof, unless the context clearly indicates otherwise.

In the present disclosure, terms such as "upper", "lower", "left", "right", "front", "rear", "vertical", "horizontal", "side", "bottom", and the like indicate orientations or positional relationships based on those shown in the drawings, and are only relational terms determined for convenience in describing structural relationships of the parts or elements of the present disclosure, and do not refer to any parts or elements of the present disclosure, and are not to be construed as limiting the present disclosure.

In the present disclosure, terms such as "fixedly connected", "connected", and the like are to be understood in a broad sense, and mean either a fixed connection or an integrally connected or detachable connection; may be directly connected or indirectly connected through an intermediate. The specific meanings of the above terms in the present disclosure can be determined on a case-by-case basis by persons skilled in the relevant art or technicians, and are not to be construed as limitations of the present disclosure.

Example (b):

the utility model provides an eraser mould, as shown in figure 1, includes the mould body 1 that a plurality of arrays were arranged, the shape of mould body 1 corresponds with the eraser and is formed with the open molding cavity in top, is equipped with a plurality of sunken 2 or protruding 3 on the bottom surface of molding cavity, sunken 2 from the bottom to big cross section grow gradually, protruding 3 from the bottom up cross section diminishes gradually. The bottom of the molding cavity is provided with steps 5 arranged along the circumferential direction at a position close to the inner wall, and a plastic concave ring 6 is formed at the bottom of the molding cavity through the steps 5. The structure forms a model with high top surface outer edge and low inner edge on the eraser. The recess 2 and the protrusion 3 at the bottom of the molding cavity are formed with molding shapes. The structure enriches the shape of the eraser and can produce the die with low cost. The economic benefit is improved. The depressions and protrusions are shown schematically and are not limited to the shapes.

As shown in fig. 2, the surface of the molding cavity is provided with a teflon coating 4. The structure reduces the force required by the rubber to be separated, so that the rubber is more easily separated. The molding cavity is provided with a draft angle. The structure enables the eraser to be separated more easily.

As shown in fig. 3, the outer edge of the die extends in the radial direction, a dovetail slider 7 is arranged on one side in the width or length direction of the die, a dovetail groove 8 corresponding to the dovetail block is arranged on the other side of the die, and adjacent dies are detachably connected through the dovetail slider 7 and the dovetail groove 8. The structure is used for producing the rubber in multiple batches, and the moulds corresponding to different shapes can be connected in parallel to produce together. The die is provided with a vertical first locking pin hole 9 on the dovetail sliding block 7, the dovetail groove 8 is provided with a second locking pin hole 10 corresponding to the first locking pin hole 9, and the first locking pin hole 9 and the second locking pin hole 10 of the adjacent die are matched and inserted with a locking pin 11. The structure realizes the linkage between every two molds and improves the stability of connection.

The structure is used for realizing a novel rubber manufacturing process, and 70 percent of plasticizer is used; pvc aleurone, 28%; calcium carbonate, 2% formulation, by the following steps: 1. stirring the raw materials into liquid; 2. mixing colors with colored color-adding paste; 3. dispensing on the die according to the design draft by a dispenser; 4. heating and forming through a drying oven; the structure similar to a reverse mold in the form can greatly reduce the production cost, reduce the requirement on an injection molding machine, reduce the production cost, facilitate large-scale production and have simple production expansion. The shaped rubber is inserted into the mold body 1, and its side edges are blown out by high-pressure air. The structure can freely produce the concave 2 or the convex 3 which are combined and arranged to be in a designed shape. In order to avoid the liquid mixed liquid being unable to be pulled out after solidification, the cross section of the dent 2 is gradually enlarged from bottom to large, and the cross section of the bulge 3 is gradually reduced from bottom to top. The eraser produced by the structure has the advantages that the protrusions 3 are small in upper part and large in lower part, and the depressions 2 are large in upper part and small in lower part. Compared with the injection molding mode, the production of the water gap can be avoided, and the process of eliminating the water gap can be omitted.

The above-described embodiments are merely preferred embodiments of the present invention, which are not intended to be limiting in any way, and other variations and modifications are possible without departing from the scope of the invention as set forth in the following claims.

Claims

1. The utility model provides an eraser mould, characterized by includes the mould body that a plurality of arrays were arranged, the shape of mould body corresponds with the eraser and is formed with the open molding cavity in top, makes and is equipped with a plurality of caves in or protruding on the bottom surface of cavity, sunken from the bottom up cross section grow gradually, protruding from the bottom up cross section diminishes gradually.

2. The rubber mold as defined in claim 1, wherein the molding cavity is provided with a teflon coating on the surface thereof.

3. A rubber mould as claimed in claim 1 or 2, wherein the moulding cavity is provided with a draft angle.

4. The rubber mold as defined in claim 1, wherein the bottom of said molding cavity is provided with steps arranged in the circumferential direction near the inner wall, and a plastic concave ring is formed at the bottom of the molding cavity through said steps.

5. A rubber mold as defined in claim 1 or 4, wherein the depressions and the projections at the bottom of the cavity are formed with a molding shape.

6. The rubber mold as claimed in claim 1, wherein the outer edge of the mold extends in the radial direction, a dovetail slider is arranged on one side in the width or length direction of the mold, a dovetail groove corresponding to the dovetail slider is arranged on the other side of the mold, and adjacent molds are detachably connected through the dovetail slider and the dovetail groove.

7. The rubber mold as claimed in claim 6, wherein the dovetail slide block of the mold is provided with a first vertical locking pin hole, the dovetail groove is provided with a second locking pin hole corresponding to the first locking pin hole, and the first locking pin hole and the second locking pin hole of the adjacent mold are adapted and inserted with locking pins.