JPS6257895A - Cutter for resin molded-shape gate solidified body - Google Patents

Abstract

(57) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.

Description

[Detailed Description of the Invention] Purpose of the Invention (Field of Industrial Application) The present invention is directed to solidifying the gate solidified material attached to the synthetic resin molded product in the synthetic resin molding process at the gate part of the mold. This invention relates to a cutting device.

<Conventional technology) Conventionally,! , IJ injection molding method, etc., the synthetic resin 11 is injected into a mold and molded. At this time, the so-called '
The molten synthetic nh material paddy is injected into the mold through an injection channel called /''-)-.

Once the injection is completed and the synthetic resin material in the mold has solidified to form a resin molded object, the resin molded object is removed from the mold. At that time, the synthetic resin material of the gate part is similarly solidified and attached to the molded body as an appendage of the resin molded body (hereinafter referred to as gate solidified material), and is attached to the top and removed from the mold. come out.

(: This is an automatic sufu-7 as shown in Figures 7 and 8.)
The following will explain the case of molding the exterior material 32 of the ring wheel 31 as an example.

The core metal 33 is inserted into a molding mold as an insert, and a synthetic resin material such as polyurethane is molded into a rim (RIM) and solidified into the mold, and a steering wheel is inserted into the mold. 31 projects were selected. The solidified material 3 at the J part, the water lining, and the gate solidified material are formed, and the burr 35 is formed in the shape υ], respectively. are removed from the exterior (A32).

Of course, the solidified substance 34 to this goo 1 is the steering wheel 3.
1. If it is unnecessary, it must be removed.

Therefore, conventionally, this gate solidified material 34 has been manually cut and removed using a knife.

(Problems to be Solved by the Invention) However, in the method of removing the gate solidified material 34 in one operation, there is a problem in that it is difficult to make a clean image because the traces of the removed gate solidified material 34 are cut too much or left uncut. In addition, there were problems in that the exterior material 32 was sometimes incised, making it difficult to improve the appearance of the molded product, and that the efficiency of cutting the gate solidified material was low.

Therefore, the present inventor conducted intensive research to develop an apparatus capable of cutting and removing the solid matter from a synthetic resin molded article, and as a result, the present invention was completed. Therefore, the object of the first invention is to provide a device for cutting and removing the solidified material at the gate of a synthetic resin molded body, and the object of the second invention is to more reliably remove the solidified material from the gate of a synthetic resin molded product. The purpose is to provide a device that can be cut and removed.

Structure of the Invention (Means for Solving Problems) Mizuo - Invention (Yo, a copying member for a receptacle that moves in contact on the surface of a resin molded body, a support member for supporting the copying member, and a copying member for supporting the copying member, A resin molded body comprising a blade attached directly or indirectly to a supporting member, the blade being a blade for cutting the root portion of the gate solidified material in the resin molded body as the copying member moves. The structure of the device for cutting the solidified material into Goo 1 is as follows.

The second invention also provides a copying member for contacting and moving the surface of a resin molded body, a support member for supporting the copying member, and a member attached directly or indirectly to the support member. A knife for cutting the root portion of the gate trapped material in the resin molded body according to the movement of the copying member; The structure of the present invention is a cutting device for cutting a solidified resin molded product gate, which is equipped with a gripping member for gripping 7.

(Function) In the first invention, there is provided a copying member that can move in contact with the root portion of the gate solidified material, and a cutting means including a blade attached to a support member of the cutting member, so that the cutting means housing is By simply moving the cutter into contact with the molded body, the blade cuts the solidified gate material according to the surface condition of the resin molded body.

In the second invention, in addition to the effect of the first invention, since the end portion of the solidified gate material is gripped, it is possible to cut the solidified gate material in a stretched state.

(Actual column hliii) Mizui - The first embodiment of the invention is embodied in a cutting device for a gate solidified material of the exterior material of a steering wheel (hereinafter referred to as a ring) of a vehicle, based on Fig. 1-6. explain. In the cutting means A of this embodiment, two rollers are used as the copying member 3.

As shown in FIG. 1, a sliding member 7 is fitted into the vertical rail 6, which is movable in the two-dimensional directions indicated by the arrows x and Y. A part 5 is provided to take an air cylinder (not shown) for raising and lowering it in the direction of arrow Z.1111 Movement of rail 6 in the X and Y directions and sliding member 7 The movement in the direction is performed by a robot and an air cylinder (both not shown), and their drive control is performed by a monitor (not shown).

A 1°l IJ stand ε3 is fixed to the sliding member 7, and a U-shaped support member 10 is pivotally supported on a fulcrum @9 provided at the center of the tip of the base 8. The support part t,
t 10 is rotatable 1° about the fulcrum shaft 9. However, hooks 14 and 15 are attached to the measuring surface of the base 8 and the side surface of the support member 10, and each hook 14 and 15, the elastic body 16 is locked in an extended state. Therefore, unless an external force is applied to the support member 10, the support member 10 is pulled by the elastic body 16 and rotates toward one side of the base 8.
I'm at No.

Two branch portions 1Qa and IOb are formed in the support member 10, and these are slightly inclined downward. Then, shafts 13a and 13b are attached to their tips, and rollers 3a are attached to these shafts 13a and 13b.
, 3b are rotatably provided.

Between the two branch parts 10a and 10b (knife gripping member 1
1 is fixed thereto, and the cutter 4 is fixed thereto by a screw 12, but the cutter 4 can be directly attached to the support member 10.

The cutting edge 4a of the cutting tool 4 is inclined, and if the cutting tool 4 is moved horizontally by 1J, the goo [-solidified material that hits it] will be cut. Further, the knife 4 is double-edged so that the recessing direction is stable.

Also, the mounting direction of the cutter 4 when viewed from the side is the third direction.
As shown in the figure, the axes are different from the axes of the shafts 13a and 13b of the rollers 3a and 3b, and the two are not parallel to each other. This is the part of the ring 21 where the rollers 3a and 3b come into contact and move along and the part where the cutter 4 comes in contact with, that is, the goo 1.
This is because the cut portions of the solidified material are different from each other.

Next, the operation and operation of this embodiment configured as described above will be explained.
Explain the effects.

According to FIG. 1, the cutting means A is a ring 2 shown in FIG. 2.
Move it closer to 1. The robot 1 moves to the cutting means.
This is carried out by moving the rail 6 in the directions of arrows X and Y, or by moving the sliding member 7 in the direction of arrow Z after the rail 6 has been moved.

At this time, as shown in FIG. 4, the cutting means A is first moved so that the roller 3a that is farther away from the cutter 4 comes into contact with the outer circumferential side of the ring 21. if,
As shown in FIG. 6, the roller 3b is closer to the cutter 4.
If the blade 4 is brought into contact with the ring 21 first, the orientation of the blade 4 will deviate from the tangential direction of the ring 21, so when the blade 4 begins to move, the burr 2015 Goo 1 - Solidification I! It becomes easier to fit into 1l12.

Next, when the cutting means Δ is moved directly toward the ring 21, the two rollers 3a and 3b are brought into contact with the curved outer peripheral side of the ring 21, as shown in FIG.

Also, when the rollers 3a, 31) are brought into contact with the ring 21, the edge portions of the rollers 3a, 3b touch the root portion 2 of the gate solidified material 2 that is pulled into the ring 21, as shown in FIG.
Make it correspond to a.

After doing this, cut the gate solidified material 2 by cutting means A.
When the rollers 3a and 3b are moved toward the base portion 2a of the gate solidified material 2, the rollers 3a and 3b move along the base portion 2a of the gate solidified material 2.

During this time, the support member 10 gradually rotates around the fulcrum 0119 of the base 8 toward the side where the elastic body 16 is not removed. As the rollers 3a and 3b move, the cutter 4 attached to the support member 10 via the cutter gripping member 11 also moves. Solidified product 2
disconnect. Since the knife 4 always faces in the tangential direction of the ring 21, the knife 4 never cuts into the exterior material 22.

Moreover, it takes 16% more time to perform the cutting, so using this device will improve work efficiency.

Since the surface of the outer periphery flll1 of the gear I arrangement ring 21 is formed neatly, the traces of the goo 1-solidified material 2 cut along the surface will be clean.

When cutting of the gate solidified material 2 is completed, when the cutting means △ is pulled away from the ring 21, the elastic body 16 acts and the support member 10 rotates around the fulcrum shaft 9 as shown in FIG. in,
5. The machine is ready for the next cutting cycle.Next, an embodiment of the second invention will be described with reference to FIG.

The device of this example is l;7J I! Furthermore, as shown in FIG. 2, the exterior material 22 of the ring 21 is
It is provided with a gripping means B for gripping the end portion 2b of the gate solidified material 2 formed in the gate.

The configuration of the cutting fFIA is the same as that of the first embodiment,
The gripping means B, whose functions and effects are likely to be the same as those of the first embodiment, has a fixed bar 18 fixed to the frame 17, and the gate solidified material 2 can be placed on the bar 18. and a rotating bar 19 that can be rotated up to above the fixed bar 18. Note that the rotation bar 19 is rotatable about a fulcrum shaft 24 that is JQ apart from the arm 17.

When the end portion 21 of the gate solidified material 2 is to be gripped by the gripping means B, the ring 21 is placed on a ring fixing base (not shown) as shown in FIG. Fix the ring 21 so that it is on top of the ring 18. Then, the rotating bar 19 of the gripping means B is rotated to grip the end portion 2b of the gate solidified material 2 with the two bars 18 and 19.

After grasping the end portion 2b of the gate solidified material 2 in this way, the gate solidified material 2 is then held in the same manner as in the first embodiment.
begins the cutting operation.

If the end portion 2b of the gate solidified material 2 is grasped before using the cutting means A in this way, the ring 21 and the grasping means B
The solidified material 2 is pulled into the goo 1 by 4'1. ,7. '
: state, so if you insert the knife 4 there, you will be able to cut the solidified material 2 with 8ζ4 and surely.

This gripping means B moves the gate solidified material 2 when it is made of a soft material such as urethane resin. In other words, this handle J,
, 'i 'f 1 stage B h Therefore, at the end of the cutting, since the solidified material 2 is a soft 71 material, the cut part will be in a state of Hp fL lower -) I, and the downward force due to its own weight will prevail, and it will cut reliably in the tangential direction. become unable to do so. Therefore, there is a possibility that uncut parts may occur.

Although the embodiments of the present invention have been specifically described above, the present invention is not limited to the above embodiments, and can also be implemented in the following embodiments, for example.

(1) The cutting means can be used to cut the gate solidified material 2 by hand without using a robot.

(2) The cutting edge 4a of the blade 1 4 faces in the direction of Goo [- tangent in the part that contacts the solidified material 2] -Cil'3, and the direction in which the cutting means A is urged against the ring 21 is the direction of the ring 21. 21
The configuration of the cutting means A can be changed if it can be configured to face the center of the cutting means A. For example, the copying member 3 may be 1f1MI as long as it satisfies the above-mentioned configuration requirements.

(3) The apparatus of the present invention can be applied to any molded product having a gate solidified material 2 formed by a so-called film glue 1, which is flat and has a certain width. can. In particular, it can be advantageously applied to cutting the gate solidified material 2 of a molded body having a curved surface.

Effects of the Invention The use of the apparatus of the present invention provides the following excellent effects.

In the first invention, since the copying member cuts the gate solidified material following the surface condition of the resin molded body with which it comes into contact, the traces of the cut gate solidified material are left clean.

Therefore, the quality of the product is improved.

Since the blade moves following the resin molding, the blade will not deviate and cut into the resin molding.

Further, since the time required for cutting the gate solidified material is short, the work efficiency is improved compared to the conventional work.

In the second invention, the end of the gate solidified material is grasped and the gate solidified material is cut while the gate solidified material is being pulled, so the cutting is easy and reliable, and there is no possibility of uncut parts being left behind. do not have.

[Brief explanation of drawings]

Fig. 1 is a perspective view of the first embodiment of the present invention, Fig. 2 is a perspective view of the second embodiment, Fig. 3 is a sectional view showing the state in which the knife is in contact with the steering wheel, and Fig. 4 is a perspective view of the second embodiment. An explanatory diagram showing a state in which the cutting means first contacts the steering wheel. FIG. 5 is an explanatory diagram showing a state in which the cutting means completely contacts the steering wheel. FIG. Fig. 7 is a front view of the steering wheel, Fig. 8 is an explanatory diagram showing the state in which the
A cross-sectional view taken along the line 5-5 is shown.

Claims (1)

[Claims] 1. A copying member (3) for contacting and moving on the surface of the resin molded body (1), a support member (10) for supporting the copying member (3), and the support It consists of a cutter (4) attached directly or indirectly to the member (10), and the cutter (4) moves the gate solidified material in the resin molded body (1) with the movement of the copying member (3). The base of (2) (
2a) A cutting device for a solidified resin molded gate solidified material, characterized in that it is a cutter for cutting. 2. Claim 1 in which the copying member (3) is a roller
The cutting device 3 for a solidified resin molded gate solidified material according to claim 1, wherein the rollers (3) are a pair of two rollers. 4. The support member (10) is provided with a pair of two rollers (3) which are copying members, and one blade (4) attached between them. A cutting device for solidified resin molded gates. 5. A copying member (3) for contacting and moving on the surface of the resin molded body (1), a support member (10) for supporting the copying member (3), and a support member (10) directly attached to the support member (10). A blade (4) that is attached directly or indirectly and cuts the base portion (2a) of the gate solidified material (2) in the resin molded body (1) as the copying member (3) moves. A cutting device for a resin molded gate solidified material, characterized in that the cutting device comprises: a cutting tool for gripping the end portion (2b) of the gate solidified material (2); and a gripping means for gripping the end (2b) of the gate solidified material (2).