KR101673207B1

KR101673207B1 - Gate cutting block and gate cutting device for mold product

Info

Publication number: KR101673207B1
Application number: KR1020150045082A
Authority: KR
Inventors: 김옥준; 최도식; 이충국
Original assignee: 김옥준
Priority date: 2015-03-31
Filing date: 2015-03-31
Publication date: 2016-11-07
Also published as: KR20160116808A

Abstract

The present invention relates to a gate cutting block and a gate cutting device for separating an injection molded product from a runner, and more particularly to a gate cutting block and a gate cutting device capable of adjusting a position for supporting a runner.
The gate cutting block of the present invention is characterized in that it is coupled to a cutting device for cutting the gate between the product and the runner for separating the injection molded product from the molded runner and on which the product and the runner are seated, A block main body having a seating portion formed thereon; A support member vertically movably coupled to the block body to support the runner; And a fixing member for fixing the support member.

Description

[0001] The present invention relates to a gate cutting block and a gate cutting device,

The present invention relates to a gate cutting block and a gate cutting device for separating an injection molded product from a runner, and more particularly to a gate cutting block and a gate cutting device capable of adjusting a position for supporting a runner.

Recently, digital cameras and smart phones equipped with them have been mass-produced and sold, and these devices are equipped with a camera module for focus adjustment and magnification control.

The camera module is composed of a lens that receives external light with the subject, an image sensor that receives the light incident from the lens and transmits the image as an electrical signal, and a lens and an image sensor, respectively, Lt; RTI ID = 0.0 > a < / RTI > housing.

Generally, such a barrel is injection-molded in a large number of pieces by using one mold. On the other hand, when a plurality of barrels are injection-molded into one mold at one time, a runner, which is an intermediate path of movement and injection of the molten material, . And a gate that is the final molten material inflow path between the end of the runner and the product is essentially required. Accordingly, the injection-molded product to be injection-molded to manufacture the barrel is provided with a plurality of barrels according to the shape of the mold, and a runner extending from the center, at which the molten material is injected into the position where each barrel is formed, And a gate. Thereafter, a cutting process is performed in which the gate is cut and each barrel is separated from the gate and the runner. Such a cutting process is required to minimize the occurrence of flaws in the gate cutting and rapid cutting operation in consideration of the quality of the barrel and productivity.

Fig. 1 shows an injection molding 1 for producing a barrel.

Fig. 2 also shows another type of the injection molding 1. The injection molding 1 shown in Fig. 2 includes a sprue 2 for conveying an injection product, a runner extending from the sprue 2 to determine the position of each product, And a gate 5 for easily cutting the product 6 from the runners 3, 4.

On the other hand, Japanese Laid-Open Patent Publication No. 10-2007-0048302 discloses a gate cutting apparatus for an injection molding for separating a product from the above-mentioned injection molding. 3 is an exploded perspective view showing a conventional gate cutting apparatus for an injection molding.

The gate cutting device 30 of the conventional injection molding comprises a first cutting body 40, a cutting edge 43 and a cutting die 32. The first cutting body 40, to which the cutting edge 43 is attached, The cutter blade 43 is vertically moved up and down by a separate conveying device to separate the product from the cutout die 32 by cutting the gate.

However, if the injection product is not lifted from the cutting die or stably bonded due to the geometrical error of the injection-molded article or the partial deviation of the injection-molded article and the cutting die, a burr Resulting in a large amount of defective products.

SUMMARY OF THE INVENTION The present invention has been made to solve the above problems and it is an object of the present invention to provide a gate cutting block capable of preventing the occurrence of defects by minimizing the burr formed on the product by adjusting the height for supporting the runner connecting the injection- And a gate cutting device.

In order to achieve the above object, a gate cutting block of the present invention is combined with a cutting device for cutting a gate between the product and runner to separate the injection molded product from the molded runner, A block body having a seating portion on which the product is seated; A support member vertically movably coupled to the block body to support the runner; And a fixing member for fixing the supporting member.

In the block body, a moving groove into which the supporting member is inserted and a fixing groove into which the fixing member is inserted are formed, the moving groove and the fixing groove are communicated with each other, and the fixing member presses and fixes the supporting member .

The fixing member has a screw thread formed on the outer circumferential surface thereof and is screwed into the fixing groove, and a wrench insertion hole is formed in the center portion, and is moved in the front-rear direction with respect to the supporting member by the operation of the wrench.

The support member is formed with an insertion groove into which a protrusion protruded downward from the runner is inserted. The block body is formed with a receiving groove formed along the shape of the runner and into which the runner is inserted .

On the other hand, a gate cutting apparatus for separating an injection molded product from a molded runner comprises a gate cutting block on which the product and the runner are seated; A fixed body to which a plurality of the gate cutting blocks are coupled; And a cutting portion that cuts a gate between the product and the runner so that the product is separated from the runner, wherein the gate cutting block includes: a block body having a seating portion on which the product is seated; A supporting member for supporting the runner in a vertically movable manner, and a fixing member for fixing the supporting member.

The gate cutting block and the gate cutting apparatus according to the present invention minimize the burr formed on the product by adjusting the height of the support member supporting the runner according to the deviation of the injection molding and the gate cutting block, So that the occurrence of defects can be prevented.

BRIEF DESCRIPTION OF THE DRAWINGS Figure 1 shows a general form of an injection mold for producing a barrel.
Fig. 2 is a view showing another type of injection molding. Fig.
3 is a view showing a conventional gate cutting apparatus for an injection molding.
4 is a plan view of a gate cutting apparatus according to an embodiment of the present invention;
5 is a perspective view of a gate cutting block according to an embodiment of the present invention;
6 is a front view of a gate cutting block according to an embodiment of the present invention;
7 is a sectional view taken along the line AA in Fig.

5 is a perspective view of the gate cutting block, FIG. 6 is a front view of the gate cutting block, and FIG. 7 is a vertical sectional view taken along the line AA in FIG. 5 to be.

Hereinafter, the present invention will be described in detail with reference to the accompanying drawings.

A gate cutting apparatus according to an embodiment of the present invention separates an injection molded product 6 from a formed runner and comprises a fixed body 100, a cutting portion (not shown), and a gate cutting block 200.

A plurality of gate cutting blocks 200 are coupled to the fixed body 100. In this embodiment, as shown in FIG. 4, two gate cutting blocks 200 are symmetrically and detachably coupled to each other around the center of the fixed body 100.

The cutting portion is located above the fixed body 100 and moves up and down to separate the product 6 from the runner by cutting the gate 5 between the product 6 and the runner. At this time, the runner is supported by the support member 220 of the gate cutting block 200.

The gate cutting block 200 includes a block body 210, a support member 220, and a fixing member 230, as shown in FIG.

The block body 210 is detachably coupled to the fixed body 100 and a seat 213 on which the product 6 is seated is formed. Specifically, the block body 210 can be divided into a lower member 210a and an upper member 210b. The lower member 210a has a moving groove 211 and a fixing groove 212 formed therein. The moving groove 211 is formed in the lower member 210a so as to pass through the upper and lower portions, and the supporting member 220 is coupled to move up and down. The fixing groove 212 is formed perpendicular to the moving groove 211. The fixing groove 212 is formed to be open to the front of the block body 210 and communicates with the fixing groove 212. On the upper portion of the lower member 210a, there is formed a seating portion 213 on which the product 6 is seated on both sides of the moving groove 211. [ That is, the two injection molded articles 6 are disposed on both sides of the support member 220, and the runner connecting the two articles 6 is disposed on the upper side of the support member 220. The upper member 210b is integrally formed on the upper part of the lower member 210a, and a receiving groove 214 into which the runner is inserted is formed. The first runner 3 connecting the two products 6 is disposed on the upper portion of the support member 220 and the second runner 4 extended from the first runner 3 is disposed in the receiving groove 214 . The receiving groove 214 is formed in the same shape as the runner.

The support member 220 is vertically movably coupled to the block body 210 to support the runner. As described above, the support member 220 is inserted into the movement groove 211 and is vertically movable, so that the support height of the runner can be adjusted. The support member 220 is formed with an insertion groove 221 into which a protrusion protruded downward from the first runner 3 is inserted. So that the product 6 and the runner can be stably placed in place.

The fixing member 230 fixes the supporting member 220 so that the runner can be supported at an appropriate height. 5 and 6, the fixing member 230 is screwed on the outer circumferential surface of the fixing member 230 and screwed into the fixing groove 212. The wrench insertion hole 231 is formed at the center of the fixing member 230, Back direction with respect to the main body 220. Accordingly, when the fixing member 230 moves to the rear where the supporting member 220 is disposed, the fixing member 230 can press and fix the supporting member 220 backward. Conversely, when the fixing member 230 moves forward, the fixing member 230 can move, and the height of the fixing member 230 can be adjusted.

After the height of the support member 220 is properly adjusted and fixed when the deviation between the gate cutting block 200 and the injection product occurs, the block body 210 is coupled to the fixed body 100, (5) is cut to separate the product (6) from the runner. Accordingly, even if a deviation occurs between the gate cutting block 200 and the injection object, the height of the runner support by the support member 220 can be adjusted to minimize occurrence of burrs at the cut portion of the product 6, .

The gate cutting block and the gate cutting apparatus according to the present invention are not limited to the above-described embodiments but can be variously modified within the scope of the technical idea of the present invention.

2: sprue, 3: first runner, 4: second runner, 5: gate, 6: product,
100: fixed body,
200: Gate cutting block
The present invention relates to a block body and a method of manufacturing the same.
220: support member, 221: insertion groove,
230: fixing member, 231: wrench insertion port,

Claims

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A gate cutting block coupled to a cutting device for cutting a gate between the product and the runner to separate the injection molded product from the molded runner and to which the product and the runner are seated,
A block body having a seating portion on which the product is seated;
A support member vertically movably coupled to the block body to support the runner; And
And a fixing member for fixing the supporting member,
Wherein the block body is formed with a moving groove into which the supporting member is inserted and a fixing groove into which the fixing member is inserted,
The moving groove and the fixing groove are communicated with each other,
And the fixing member presses and fixes the supporting member.

The method of claim 2,
Wherein the fixing member has a thread formed on an outer circumferential surface thereof and is screwed to the fixing groove, and a wrench insertion hole is formed in a central portion thereof, and moves in the forward and backward directions with respect to the supporting member by the operation of the wrench.

The method of claim 2,
Wherein the support member is formed with an insertion groove into which a projection projecting downward from the runner is inserted,
Wherein the block body is formed with a receiving groove formed along the shape of the runner and into which the runner is inserted.

A gate cutting device for separating an injection molded product from a molded runner,
A gate cutting block on which the product and the runner are seated;
A fixed body to which a plurality of the gate cutting blocks are coupled; And
And a cutting portion for cutting the gate between the product and the runner such that the product is separated from the runner,
Wherein the gate cutting block comprises:
A block body on which a seat part on which the product is seated is formed,
A support member vertically movably coupled to the block body to support the runner,
And a fixing member for fixing the supporting member,
Wherein the block body is formed with a moving groove into which the supporting member is inserted and a fixing groove into which the fixing member is inserted,
The moving groove and the fixing groove are communicated with each other,
Wherein the fixing member presses and fixes the supporting member.