JPH053294Y2 - - Google Patents

Description

[Detailed description of the invention] A. Purpose of the invention (1) Industrial application field The present invention relates to a gate cutting device for resin molded products for cutting and removing gates formed protruding from the molded product when resin is molded. It is something.

(2) Prior Art Generally, in a resin molded product molded in a mold, an extra wall called a gate is formed to protrude integrally. In order to cut and remove this gate, a gate cutting device provided in a robot hand has been considered.

As an example of such a gate cutting device, a gate cutting device described in Japanese Utility Model Application Laid-Open No. 63-8915 is known.

Such a gate cutting device is equipped with a nipper, and when a resin molded product is conveyed to the gate cutting device by a robot, the nipper cuts and removes the gate of the resin molded product.

(3) Problems to be solved by the invention However, if the gate is simply cut and removed using the nippers, the cut gates will be scattered in all directions by the cutting force of the nippers. The scattered gates may enter the adjacent resin molding equipment and cause the resin molding equipment to malfunction, or may hit and injure a worker.

The present invention has been developed in view of these problems, and its purpose is to provide a gate cutting device that prevents the cut gate from scattering when cutting the gate.

B. Structure of the invention (1) Means for solving the problem In order to solve the above-mentioned problem, the present invention provides a method for cutting a gate that is integrally molded into a resin molded product when the molded product is molded. The gate cutting device for resin molded products is characterized in that a gripper for gripping the gate and a nipper for cutting the gate are provided adjacent to each other on a robot hand.

(2) Effect In the gate cutting device for resin molded products according to the present invention having such a configuration, when cutting the gate with the nippers, the grippers firmly grip the gate. Therefore, even if the cutting force of the nipper is applied to the gate, the cut gate will not fly away.

(3) Embodiments Hereinafter, embodiments of the present invention will be described using drawings.

1 and 2 show an embodiment of a gate cutting device for resin molded products according to the present invention, FIG. 1 is an overall perspective view of a cutting station in which a robot equipped with this gate cutting device is installed, and FIG. 2 is a diagram showing this gate cutting device. FIG. 3 is an enlarged perspective view of the device.

As shown in FIG. 1, a resin molding device 1
A cutting station 2 is arranged adjacent to. A robot 3 having a hand 3a is installed at the cutting station 2.

As shown in FIG. 2, an air cylinder 5 is attached to the hand 3a of the robot 3 by a bracket 4. As shown in FIG. A nipper 6 is connected to this air cylinder 5. In this case, the two blades 6a and 6b of the nipper 6 are connected so that they can be opened and closed by the operation of the piston of the air cylinder 5. Since such a connection can be performed by a conventionally known method, a description thereof will be omitted.

Further, an air cylinder 7 is attached to the bracket 4 adjacent to the air cylinder 5, and a gripper 8 is connected to the air cylinder 7. In that case, the gripper 8 has a pair of gripping members 8a and 8b.
are connected so that they can be approached and separated by actuation of the piston of the gripper 8. Such a connection can also be made by a conventionally known method, so
The explanation will be omitted.

In this way, the nipper 6 and gripper 8 attached to the robot hand 3a constitute a gate cutting device.

As shown in FIG. 1, an aggregation shooter 9 is provided below the hand 3a of the robot 3, and a conveyor 10 is provided below the aggregation shooter 9. A storage bucket 11 is arranged at the tip of the conveyor 10.

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

The workpiece 13, which is a resin molded product molded by the resin molding device 1, has a large number of gates 13a, 13a, . . .
are integrally formed in a protruding manner. This work 13 is transported to the cutting station 2 by a transport device (not shown) and set at a predetermined position.

Next, the robot 3 operates and first drives the air cylinder 7. The gripper 8 is operated by driving the air cylinder 7, and the pair of gripping members 8a, 8b of the gripper 8 firmly grips one gate 13a. Next, the robot 3 drives the air cylinder 5. The nipper 6 is operated by the drive of the air cylinder 5, and the two blades 6a, 6b of the nipper 6 are
cuts the base of the gate 13a held by the gripping members 8a and 8b. At this time, since the cut gate 13a is held by the gripper 6, it will not be scattered around.

Next, the robot 3 drives the air cylinders 5 and 7 to open the blades 6a and 6b and the gripping members 8a and 8b, respectively. Therefore, the disconnected gate 1
3a passes through the nipper 6 and falls onto the conveyor 10.

Thereafter, the robot 3 is placed at the other gates 13a of the nippers 6 and grippers 8, and the above-described operation is repeated until there are no more gates 13a.

The gate 13a that has fallen onto the conveyor 10 is transported by the conveyor 10 and is transported to the storage bucket 11.
be accommodated in. On the other hand, the work 13 whose gate 13a has been completely cut and is now clean is transported to a predetermined position by a transport device (not shown).

Note that in the above embodiment, the gate 13a
Although it is assumed that the gate 13a is simply held by a pair of gripping members 8a and 8b, it is also possible to grip the gate 13a more firmly by attaching a friction material to the gripping surfaces of the gripping members 8a and 8b.

C. Effects of the invention As is clear from the above explanation, the gate cutting device for resin molded products according to the invention uses the grippers to grip the gate when cutting the gate with the nippers. Even if force is applied, the gate will not fly away. Therefore, it is possible to reliably prevent the gate from invading other devices disposed around the gate cutting device and causing these other devices to malfunction. Furthermore, it is possible to reliably avoid injuries to workers caused by the gate.

[Brief explanation of drawings]

FIG. 1 is an overall perspective view of a cutting station in which a robot having a gate cutting device for resin molded products according to the present invention is installed, and FIG. 2 is an enlarged perspective view of this gate cutting device. 3a...Robot hand, 6...Nitsupa, 8...
...Gritzpa, 13...Work (resin molded product), 1
3a...Work.

Claims (1)

[Scope of utility model registration request] This is a gate cutting device for a resin molded product for cutting a gate 13a that is integrally molded to protrude from the molded product when the resin molded product is molded, and includes a gripper 8 that grips the gate 13a, and a gripper 8 that grips the gate 13a;
A gate-cutting device for a resin molded product, characterized in that a robot hand 3a is provided with nippers 6 for cutting the gate a, adjacent to each other.