JPH11216752A - Injection molding machine and secondary processing method of injection molding - Google Patents

Abstract

PROBLEM TO BE SOLVED: To implement necessary secondary processing work efficiently for a molding formed by an injection molding machine. SOLUTION: A container 40 which is molded by an injection molding machine 31 and taken out by a molding take-out machine 32 is sucked by a suction part fitted to a robot main body 11 which can be rotated around a vertical shaft in a multi-joint robot 10 and subjected to secondary processing by a transfer machine 23 arranged around the robot 10, a label sticking machine 27, and a bar code label sticking machine 24 in sequence. A gate cutting mechanism for cutting the gate of the container 40 is installed in the suction part formed in the robot 10.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an injection molding machine used for secondary processing such as gate cutting, attaching a product label, transferring a pattern, and the like, to a molded product injection-molded into a predetermined shape by an injection molding machine. The present invention relates to a molding apparatus and a secondary processing method for an injection molded product.

[0002]

2. Description of the Related Art A molded product injection-molded by an injection molding machine is usually taken out of the injection molding machine by a molded product take-out machine, and gate cuts, transfer of patterns, etc., and application of product labels and bar code labels are performed. And so on.
The secondary processing of an injection molded product is described in Japanese Patent Publication No. Sho 61-24189, for example, immediately after being taken out of an injection molding machine, manually by an operator, or after being stored as a work-in-progress product as a stock. A predetermined secondary processing is performed by a secondary processing machine such as a transfer machine.

[0003]

However, when a molded product is subjected to secondary processing by a manual operation of an operator, there is a problem that work efficiency is poor and economic efficiency is impaired. Further, if secondary processing such as transfer and labeling is performed manually, the quality may not be constant. Further, when a plurality of secondary processing operations are performed manually by an operator, there is a possibility that one of the secondary operations is forgotten. In particular, if a user forgets to attach a bar code label in which information such as the product number of a molded product is stored, or a product label in which a product name or the like is described, a large market complaint may result.

[0004] On the other hand, when a molded product taken out of an injection molding machine is temporarily stored as a stock, and then required secondary processing is performed by each secondary processing machine, the molded product is stored. There is a problem that space is required for the operation. In addition, when transporting the injection molded product taken out of the injection molding machine, the injection molded product may be damaged or stained. In order to prevent the injection molded product from being damaged during transportation, the injection molded product must be packed, but packing costs are incurred. .

[0005] Further, various secondary processing machines are arranged around a molded product take-out machine for taking out an injection molded product from the injection molding machine, and the injection molded products clamped by the molded product take-out machine are separated into respective secondary products. In some cases, predetermined secondary processing is sequentially performed by a processing machine. In this case, in order to clamp and remove the injection molded product from the opened injection molding machine, the molded product removal machine generally lifts the injection molded product above the injection molding machine. Therefore, in order to adjust the secondary processing machine to the position of the molded product removal machine, it is necessary to use the secondary processing machine specially, for example, by increasing the mounting position of the secondary processing machine.

Further, it is necessary to sequentially take out the injection-molded articles by the molded article taking-out machine in accordance with the cycle of injection molding by the injection molding machine. It may not be possible to carry out the required multiple workings during the molding cycle. In this case, the cycle of the injection molding by the injection molding machine must be extended, and as a result, the working efficiency may be significantly reduced.

The present invention has been made to solve such a conventional problem, and an object of the present invention is to efficiently carry out a required secondary processing operation on an injection-molded article injection-molded by an injection molding machine. An object of the present invention is to provide an injection molding apparatus and a secondary processing method of an injection molded article that can be used.

[0008]

SUMMARY OF THE INVENTION An injection molding apparatus according to the present invention comprises an injection molding machine, a molded product removal machine for removing a molded product injection-molded by the injection molding machine, and a molded product removed by the molded product removal machine. A multi-joint robot attached to a robot main body in which an adsorbing section for adsorbing the object can rotate around a vertical axis, and a plurality of secondary processing machines arranged around the multi-joint robot. .

[0009] The secondary processing machine is selected from a transfer machine, a label pasting machine, and a bar code label pasting machine.

[0010] The suction section of the articulated robot is provided with a gate cutting mechanism for cutting the gate of the injection molded product.

[0011] Around the multi-joint robot, there is provided a starting end of a carry-out conveyor for carrying out a molded product secondary processed by a secondary processing machine.

In the secondary processing method for an injection-molded article according to the present invention, a molded article injection-molded by an injection molding machine is taken out by a molded article take-out machine, and the taken-out molded article is sucked by a suction section of an articulated robot. Then, by rotating the articulated robot about a vertical axis, the articulated robot is transported to a secondary processing machine arranged around the articulated robot, and predetermined secondary processing is performed by the secondary processing machine.

[0013]

Embodiments of the present invention will be described below in detail with reference to the drawings.

FIG. 1 is a schematic plan view showing an example of an embodiment of the injection molding apparatus of the present invention. In this injection molding apparatus, immediately after a container 40 such as a bucket injection-molded by an injection molding machine 31 is taken out from the injection molding machine 31 by a molded product take-out machine 32, a gate cut, a transfer of a pattern or the like, and a product label are performed. And the secondary processing of sticking a barcode label is efficiently performed. The container 40 has a hollow frustoconical shape whose bottom is closed and whose top is open, and whose diameter is gradually reduced toward the bottom.

The container 40 molded into a predetermined shape by the injection molding machine 31 is taken out by the molded product take-out machine 32 and placed on the molded product receiving table 21 arranged on the side of the injection molding machine 31. . The molded product take-out machine 32 is provided with a rotatable clamp member at the end of the arm in a vertical state, and the arm reciprocates between the injection molding machine 31 and the molded product receiving table 21. I am getting it. The molded product take-out machine 32 is a mold-opened injection molding machine 3.
1, the container 40, which is an injection molded product, is clamped by a clamp member, the container 40 is held in a predetermined posture, and the entire arm is moved to move the container 40 to the molded product receiving table 21.
Transport to the top. Then, the container 40 is placed on the molded article receiving table 21 with the closed bottom face upward on the molded article receiving table 21. When the container 40 is placed on the molded article receiving table 21, the clamping of the container 40 by the clamp member is released. The molded article table 21 is provided with a holding portion that sequentially projects in the shape of a truncated cone having a reduced diameter as it goes upward so that the inverted container 40 is fitted.

The injection molding apparatus of the present invention is provided with an articulated robot 10 that holds and transports a container 40 placed on a molded article receiving table 21. The articulated robot 10 is fixedly arranged on the floor facing the injection molding machine 31 with the molded article receiving table 21 interposed therebetween. The articulated robot 10 has a robot body 11 capable of rotating around a vertical axis over 360 °,
A first arm 12 having a base end rotatably mounted on the robot main body 11 about a horizontal axis;
And a second arm 13 whose base end is rotatably mounted around a horizontal axis at the distal end of the second arm 13. At the tip of the second arm, a suction unit 14 (see FIG. 2) for suction-holding the container 40 is provided.

FIG. 2 shows a second example of the articulated robot 10.
FIG. 4 is a front view of a suction unit provided at a distal end of an arm. The suction unit 14 is configured to be able to rotate 360 ° around the axis of the second arm 13 with respect to the second arm 13. The suction unit 14 includes the second arm 1
And three support rods 14a arranged in a state along the axial direction of the support rods 3 respectively.
The suction cups 14b are respectively provided at the tips of "a". Each suction cup 14b holds the container 40 by adsorbing to the bottom surface of the container 40.

The suction section 14 is provided with a gate cutting mechanism 15 for cutting a gate on the bottom of the container 40. The gate cutting mechanism 15 is configured such that a cutter 15a is attached to each of the support rods 14 at the center of the area surrounded by the suction cups 14.
a is supported at right angles to the cutter 15a.
Are supported by the air cylinder 15b.
It is slid in a direction orthogonal to a.

The robot body 11 of the articulated robot 10
As shown in FIG. 1, can move around the vertical axis over 360 °, and the molded article receiving table 21 is arranged in the moving area. An unloading conveyor 2 for unloading the secondary processed container 40 is located at a position facing the molded article receiving table 21 in the movement area of the suction unit 14 around the robot body 11 of the articulated robot 10.
2 are located at the beginning. The unloading conveyor 22 is configured to unload the secondary processed container 40 in a straight line so as to move away from the injection molding machine 31.

The moving range of the suction part 14 of the articulated robot 10 is 1 /
A transfer machine 23, which is a secondary processing machine for injection-molded articles, is provided at a position separated by four turns, and a bar code label issuing machine is provided between the transfer machine 23 and the start end of the unloading conveyor 22. 24 are provided. Further, on the side of the barcode label issuing machine 24 on the side of the unloading conveyor 22,
The barcode reader 25 is a barcode label issuing machine 24
And are provided integrally.

Further, a label pasting machine 27 is provided at a position away from the molded article receiving table 21 by a quarter turn on the side opposite to the transfer machine 23. A label pressing machine 26 is provided between the product receiving table 21.

At the side of the molded article receiving table 21 on the label pressing machine 26 side, the suction section 1 of the articulated robot 10 is attached.
By the gate cutting mechanism 15 provided in the container 4, the container 40
Collection container 2 for collecting the gate portion cut from the gate
8 are arranged.

The injection molding apparatus having the above-described structure is used, for example, for a container 40 molded by an injection molding machine 31.
Used to apply gate cuts and product labels as secondary processing. FIGS. 3A to 3E are schematic plan views for explaining the operation of the articulated robot 10 in each step in this case.

The container 40 that has been injection-molded by the injection molding machine 31 and clamped by the molded product take-out machine 32 is transported onto the molded product receiving table 21 and, as shown in FIG. It is placed on the molded article receiving table 21 with the bottom face upward. The container 40 is positioned by being fitted to a truncated cone-shaped holding portion provided on the molded article receiving table 21.

In such a state, the container 40 on the molded article receiving table 21 is suction-held by the suction section 14 of the articulated robot 10. The articulated robot 10
The robot body 1 so that the suction section 14 is positioned on the bottom surface of the container 40 placed on the molded article receiving table 21.
1 is rotated about a vertical axis and the first arm 12
And the second arm 13 are respectively rotated around the horizontal axis. Then, the suction unit 14 is lowered so as to approach the bottom surface of the container 40, and the four suction cups 14b are respectively suctioned to the bottom surface of the container 40.

In such a state, the first arm 12 and the second arm 13 are respectively moved so that the container 40 sucked by the suction part 14 of the articulated robot 10 rises from the molded article receiving table 21. Being driven,
The suction unit 14 is rotated with respect to the second robot main body 13 so that the axis of the container 40 is horizontal. When the container 40 sucked and held by the suction unit 14 is held horizontally, as shown in FIG. 3B, the entire robot main body 11 is rotated vertically and held horizontally. Container 40
Is located on the gate collection container 28. In such a state, the gate cutting mechanism 1 provided in the suction unit 14
5 is driven, and the gate portion on the bottom surface of the container 40 is cut by the cutter 15a. The cut gate portion is collected in the gate collection container 28.

Thereafter, as shown in FIG. 3 (c), the robot main body 11 is rotated about a vertical axis, and the container 40 sucked and held by the suction section 14 is opposed to the label sticking machine 27. You. In such a state, the label attaching machine 2
7 is driven, and the product label stuck on the release paper at regular intervals is stuck on the outer peripheral surface of the container 40. The product label has a product name, a manufacturing company name, and the like printed thereon. The label pasting machine 27 intermittently moves the release paper on which each product label is pasted at a fixed interval, and moves the release paper at a position facing the outer peripheral surface of the container 40,
A part of the product label is peeled off from the release paper at a certain angle with respect to the outer circumference of the container 40 by bending the surface on which the product label is stuck at the outer peripheral side at an acute angle. To the outer peripheral surface of the container 40 to be manufactured. At this time, only a part of the product label is stuck on the outer peripheral surface of the container 40. Label pasting machine 2
7 is provided with a label attachment confirmation sensor for confirming that the product label is attached to the outer peripheral surface of the container 40, and the label is attached to the outer peripheral surface of the container 40 by this label attachment confirmation sensor. It is confirmed that.

When it is confirmed by a label sticking confirmation sensor provided in the label sticking machine 27 that the product label has been stuck on the outer peripheral surface of the container 40 from the release paper, FIG.
As shown in (d), the robot body 11 moves the suction-held container 40 to a position facing the label pressing machine 26. Then, when the container 40 sucked and held by the articulated robot 10 is moved to a position facing the label pressing machine 26, the label pressing machine 26 is driven, and the container 40
The entire label attached to the outer peripheral surface of the container 40 is pressed against the outer peripheral surface of the container 40 by an elastic body such as a sponge.
Thereby, the label is securely attached to the entire outer peripheral surface of the container 40.

If the label attaching confirmation sensor provided in the label attaching machine 27 does not confirm that the product label is attached to the container 40, the container 40 held by the articulated robot 10 is held. Is discharged outside the orbital movement area of the suction unit 14.

When the label is attached to the outer peripheral surface of the container 40 in this way, as shown in FIG. 3E, the articulated robot 10 places the container 40 on the start end of the unloading conveyor 22. Thus, the robot main body 11 is rotated around the vertical axis. Then, the suction unit 14 is rotated to rotate the container 40 sucked and held by the suction unit 14 so that the bottom surface faces upward, and then the entire container 40 is lowered.
The container 40 is placed on the starting end of the unloading conveyor 22.
When the container 40 is placed on the unloading conveyor 22, the suction of the container 40 by the suction unit 14 is released, and the unloading conveyor 22 unloads the container 40.

Thereafter, the same operation is sequentially repeated, and the containers 40 injection-molded by the injection molding machine 31 are sequentially processed from the unloading conveyor 22 in a state where gate cuts and product labels are affixed. It is carried out.

It should be noted that if a certain number of consecutive product labels are not confirmed by the label sticking confirmation sensor provided on the label sticking machine 27, the injection molding machine 31 Is configured to stop injection molding.

FIGS. 4 (a) to 4 (f) show the articulated robot 10 in each step when performing gate cutting, transfer, and bar code sticking as secondary processing of the injection molded container 40, respectively. FIG. 5 is a schematic plan view for explaining the operation of FIG. In this case, the collection container 28 for collecting the gate portion cut by the gate cut is disposed on the side of the transfer machine 23 with respect to the molded article receiving table 21.

In this case as well, the container 4 which has been injection molded by the injection molding machine 31 and clamped by the molded product take-out machine 32
0 is the molded article receiving table 2 as shown in FIG.
4, the container 40 sucked and held by the articulated robot 10, and as shown in FIG. 4B, the container 40 sucked and held by the suction unit 14 is brought into a horizontal state, and the entire robot body 11 is moved. Is rotated vertically, and the horizontally held container 40 is positioned on the gate collection container 28 arranged on the side of the molded article receiving table 21 on the transfer machine 23 side. Then, the gate on the bottom surface of the container 40 is cut by the gate cutting mechanism 15 provided in the suction unit 14. The cut gate part is the gate collection container 28
Collected inside.

Thereafter, the container 40 sucked and held by the suction section 14 is moved to a position facing the transfer machine 23 as shown in FIG. The transfer machine 23 is provided with a truncated conical container receiver 23a that protrudes in the horizontal direction so as to hold the container 40 horizontally. The robot 10
The container 40 sucked and held by the suction unit 14 is fitted into the container receiver 23 a of the transfer machine 23. In the transfer machine 23, the transfer film is pressed by a heating roller against the outer peripheral surface of the container 40 held horizontally by the container receiver 23a. Thereby, the pattern such as the pattern and the character printed on the transfer film is transferred to the outer peripheral surface of the container 40.

In the transfer machine 23, the pattern and the like are transferred to the container 40 immediately after injection molding by the injection molding machine 31, so that the pattern and the like are transferred.
There is no need to newly heat the container 40.

When a pattern such as a pattern or a character is transferred to the outer peripheral surface of the container 40, the articulated robot 10 removes the container 40 sucked and held by the suction unit 14 as shown in FIG. In the vertical state, the outer peripheral surface faces the bar code label issuing unit of the bar code label issuing machine 24. The barcode label issuing machine 24 displays a barcode label indicating the product number of the container 40 which is a molded product in a barcode on the container 4.
0 at a predetermined position on the outer peripheral surface.

When the bar code label is attached to the outer peripheral surface of the container 40, the articulated robot 10 holds the container 40 in a vertical state as shown in FIG. The barcode label attached to the container 40 is opposed to the barcode reader 25 provided integrally with the container. Then, it is confirmed whether the bar code attached to the container 40 can be read by the bar code reader 25. The bar code of the bar code label affixed to the container 40 is
4D, the articulated robot 10 places the container 40 held in a vertical state on the start end of the unloading conveyor 22 and sucks the container 40, as shown in FIG. Release the hold. Thereafter, the container 40 placed on the start end of the unloading conveyor 22 is unloaded by the unloading conveyor 22.

If it is not confirmed by the bar code reader 25 that the bar code label is attached to the container 40, the container 40 sucked and held by the articulated robot 10 is It is designed to be discharged outside the orbital movement area. If the barcode reader 25 does not confirm that the barcode label is attached to the container 40 for a certain number of times, the injection molding by the injection molding machine 31 is stopped.

In the injection molding apparatus of the present invention, gate cutting, application of a product label, and application of a bar code label can also be performed as secondary processing. In this case, as shown in FIG. 5A, the container 40 that has been injection-molded by the injection molding machine 31 and clamped by the molded product take-out machine 32 is placed on the molded product receiving table 21. Subsequently, the robot is sucked and held by the articulated robot 10, and FIG.
As shown in (b), the container 40 is set in a horizontal state, and the gate portion on the bottom surface of the container 40 is adsorbed on the gate collection container 28 arranged on the label pasting machine 26 side of the molded article receiving table 21. Cutting is performed by a gate cutting mechanism 15 provided in the section 14. The cut gate portion is collected in the gate collection container 28.

Thereafter, as shown in FIG. 5C, the articulated robot 10 causes the container 40 to face the label attaching machine 27, and the label attaching machine 27 applies a product name or the like to the outer peripheral surface of the container 40. Is attached to the product label. Then, when it is confirmed by the label attachment confirmation sensor that the product label is attached to the outer peripheral surface of the container 40, as shown in FIG. The moved container 40 is moved to a position facing the label pressing machine 26, and the entire product label attached to the outer peripheral surface of the container 40 is pressed against the outer peripheral surface of the container 40 by an elastic body such as a sponge.

When the label is attached to the outer peripheral surface of the container 40 in this manner, as shown in FIG.
With 0 as the vertical state, the outer peripheral surface faces the bar code label issuing section of the bar code label issuing machine 24, and the bar code label is attached to a predetermined position on the outer peripheral surface of the container 40 by the bar code issuing machine 24. . Thereafter, as shown in FIG. 5F, when the barcode reader 25 reads the barcode of the barcode label affixed to the container 40, as shown in FIG. As described above, the container 40 is placed on the start end of the unloading conveyor 22, the suction holding of the container 40 by the suction unit 14 is released, and the container 40 is unloaded by the unloading conveyor 22.

[0043]

According to the injection molding apparatus of the present invention,
The injection-molded product injection-molded by the injection molding machine is suction-held by the suction section of the articulated robot, and is subjected to secondary processing by a secondary processing machine arranged around the articulated robot. Therefore, secondary processing can be performed on the molded product immediately after injection molding in a compact space. Further, the injection molded product taken out of the injection molding machine does not need to be packed or stored, and the working efficiency is remarkably improved. Furthermore, since the secondary processing is performed stably by various secondary processing machines, the quality of the injection molded article subjected to the secondary processing is significantly improved.

[Brief description of the drawings]

FIG. 1 is a schematic plan view showing an example of an embodiment of an injection molding apparatus according to the present invention.

FIG. 2 is a front view of a suction unit provided at a distal end of a second arm in the articulated robot used in the injection molding apparatus.

3 (a) to 3 (e) are schematic plan views for explaining the operation of the articulated robot in each step when a gate cut and a product label are applied as secondary processing of an injection-molded container, respectively. FIG.

FIGS. 4 (a) to (f) are diagrams for explaining the operation of the articulated robot in each step of performing gate cutting, transfer, and bar code sticking as secondary processing of an injection-molded container, respectively. FIG.

5 (a) to 5 (g) each show a multi-joint in each step of performing gate cutting, attaching a product label, and attaching a barcode label as secondary processing of an injection-molded container. FIG. 4 is a schematic plan view for explaining the operation of the robot.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 10 Articulated robot 11 Robot main body 12 1st arm 13 2nd arm 14 Suction part 14b Suction cup 15 Gate cutting mechanism 15a Gate cutter 21 Mold receiving table 22 Unloading conveyor 23 Transfer machine 24 Barcode label issuing machine 25 Barcode reader 26 label press machine 27 label sticking machine 28 gate collection container 31 injection molding machine 32 molded product removal machine 40 container

Claims (5)

[Claims] 1. An injection molding machine, a molded product take-out machine for taking out a molded product injection-molded by the injection molding machine, and a suction section for adsorbing the molded product taken out by the molded product take-out device rotate around a vertical axis. An injection molding apparatus for an injection molded article, comprising: a multi-joint robot attached to a robot body to be obtained; and a plurality of secondary processing machines disposed around the multi-joint robot. 2. The injection molding apparatus according to claim 1, wherein the secondary processing machine is selected from a transfer machine, a label pasting machine, and a barcode label pasting machine. 3. The injection molding apparatus according to claim 1, wherein the suction section of the articulated robot is provided with a gate cutting mechanism for cutting a gate of the injection molded product. 4. The start-up part of an unloading conveyor for unloading a molded product secondary processed by a secondary processing machine is provided around the articulated robot. Injection molding equipment. 5. A molded product which has been injection-molded by an injection molding machine is taken out by a molded product take-out machine, and the taken-out molded product is sucked by a suction portion of an articulated robot.
By rotating the articulated robot around the vertical axis,
A secondary processing method for an injection-molded product, wherein the secondary processing machine is transported to a secondary processing machine arranged around a multi-joint robot and performs predetermined secondary processing with the secondary processing machine.