JP7458625B2 - Workpiece supply device and burr shear system - Google Patents

Description

Application of Article 30, Paragraph 2 of the Patent Act Published at previews on August 26, 2019 and September 20, 2019

The present invention relates to a work supply device and a burr shearing system.

As a manufacturing system for forged products, there is a system in which two machines are installed side by side: a forging machine that forms a workpiece with burrs (hereinafter also referred to as the workpiece), and a shearing machine that sets the workpiece in a die, punches it out with a punch, and shears off the burrs.

In the manufacturing system, two operators are arranged, and one operator takes out the workpiece from the forging device, and the other operator receives the workpiece from the other operator and sets the workpiece in the shearing device. It has become. This is because each of the above-mentioned devices is installed at a certain distance from each other, and if one operator attempts to perform both of the above-mentioned operations, he or she must go back and forth between the devices, reducing manufacturing efficiency.

As a work supply device to assist the operator, the above-mentioned Patent Document 1 discloses a device in which a general-purpose robot grasps the workpiece formed in the forging device and sets it in the die of the shearing device.

However, the workpieces formed by the forging device do not have a constant burr shape, and when the general-purpose robot grips the workpiece, the gripping posture changes for each workpiece, making it impossible to accurately set the workpiece in the die of the shearing device.

In other words, each of the operations in the manufacturing system must be performed taking into account the burr shape of the workpiece, and must rely on the operator's eyes. This is the current situation.

Publication number 06-044498

Therefore, an object of the present invention is to reduce the number of operators in a manufacturing system.

A work supply device according to the present invention includes a forming device for forming a work, a die and a punch, and removes burrs from the work placed on the die by relatively moving the die and the punch from standby positions. The system is used in a molded product manufacturing system that includes a shearing device that shears, and includes a moving mechanism that moves the die between a placement position where the workpiece is placed and the standby position. It is characterized by:

According to such a configuration, by setting the mounting position near the molding device, the work supply device can move the die close to the operator who takes out the work from the molding device. This allows the operator to set the workpiece in the die without leaving the molding apparatus. Therefore, the operator can now feed the workpiece to the shearing device installed separately from the molding equipment while being near the molding equipment, and can operate the molded product manufacturing system by himself without reducing production efficiency. It becomes like this.

Further, in a specific embodiment of the present invention, the placement position is a range where the operator of the molding device can place the workpiece formed by the molding device without moving from the take-out position where the workpiece is taken out. You can set it to .

Further, the moving mechanism is configured to move the die with a mounting surface on which the workpiece of the die is placed facing upward when moving the die from the placement position to the standby position. It may be something that you have.

According to such a configuration, the workpiece placed on the die is less likely to shift its position during movement.

Furthermore, the apparatus may further include a sensor that detects the die, and the moving mechanism may be configured to position the die at the standby position based on a detection signal from the sensor.

According to such a configuration, it becomes possible to more accurately position the die to the standby position, and it is possible to improve the positioning accuracy of the workpiece with respect to the shearing mechanism. Furthermore, since the object to be detected by the sensor is a die, even a high-temperature workpiece that is difficult to detect by the sensor, such as a workpiece formed by hot forging, can be accurately positioned with respect to the shearing mechanism.

Further, the burr shearing system according to the present invention is a burr shearing system for shearing burrs from a workpiece formed by a forming device, and includes a die and a punch, and the die and the punch are moved relative to each other from a standby position. a shearing device for shearing burrs from a workpiece placed on the die; and a movement mechanism for moving the die between a placement position where the workpiece is placed and the standby position; It is characterized by comprising a device.

According to the work supply device according to the present invention, the number of operators in the molded product manufacturing system can be reduced.

FIG. 1 is a schematic diagram showing the overall configuration of a forged product manufacturing system incorporating a burr shearing system according to a first embodiment. FIG. 1 is an exploded perspective view schematically showing a shearing device according to a first embodiment. FIG. 2 is a schematic diagram showing the operation of the burr shearing system according to the first embodiment. FIG. 2 is a schematic diagram showing the operation of the burr shearing system according to the first embodiment. FIG. 2 is a block diagram showing the functions of a control unit according to the first embodiment.

Below, the burr shearing system according to the present invention will be explained based on the drawings.

<First embodiment> The burr shearing system according to this embodiment is incorporated into a forged product manufacturing system that forms forged products. Therefore, in the following, the overall configuration of the forged product manufacturing system will be explained, and then the configuration of the burr shearing system will be explained.

Specifically, as shown in FIG. 1, the forged product manufacturing system 100 according to this embodiment includes a forging device 10 that forms a workpiece W, and a burr shearing system S that shears burrs B from the workpiece W formed by the forging device 10.

The forging device 10 forms the workpiece W by die forging. Specifically, the forging device 10 is equipped with a pair of forming dies 11 that press-form the material by relative movement to form the workpiece W. Here, the pair of forming dies 11 is, for example, a lower die 11a and an upper die 11b that can be raised and lowered relative to the lower die 11a.

The lower mold 11a and the upper mold 11b have opposed surfaces 12 that face each other, and a molding surface 13 for molding the material into a product shape is formed in a part of the opposed surfaces 12.

The upper die 11b approaches the lower die 11a with a small gap between them, and presses the material placed on the lower die 11a. As a result, the part of the material sandwiched between the lower die 11a and the upper die 11b is molded into the product shape at the part sandwiched between the molding surfaces 13, and the part that protrudes from the molding surface 13 and is sandwiched between the opposing surfaces 12 is molded into a flat burr B, forming the workpiece W.

The burr shearing system S includes a shearing device 20 that shears (trims) the burr B from the workpiece W, a workpiece supply device 30 that supplies the workpiece W formed in the forging device 10 to the shearing device 20, and a shearing device 20 and the workpiece. A control unit C that controls the supply device 30 is provided.

As shown in FIG. 2, the shearing device 20 includes a die 21 on which the workpiece W is placed, a support stand 22 that supports the die 21, and a punch 23 that can be raised and lowered relative to the die 21. The shearing device 20 is configured to shear burrs B from the workpiece W placed on the die 21 by raising and lowering the punch 23 to engage with the die 21. Thus, the die 21 and the punch 23 constitute a shearing mechanism T that shears burrs B from the workpiece W.

Specifically, the die 21 is shaped like a rectangular plate and has a mounting surface 21s on which the workpiece W is mounted. Furthermore, the die 21 includes a positioning structure 21c that positions the workpiece W with respect to the mounting surface 21s of the die 21. The positioning structure 21c includes, for example, a through hole 21h that penetrates from the mounting surface 21s of the die 21 to the opposite surface of the mounting surface 21s. The through hole 21h is formed in a shape into which a portion of the workpiece W protruding from the burr B that will become a product is fitted into the through hole 21h. As a result, in this embodiment, the workpiece W is placed on the die 21 by placing the burr B on the placement surface 21s of the die 21 and fitting the part that will become the product into the through hole 21h of the die 21. It is positioned relative to the surface 21s.

The support stand 22 supports the die 21 at a die standby position D (see FIG. 3(a)) set on its upper surface. Specifically, the support stand 22 includes a frame 24 on its upper surface for positioning the die W at the die standby position D. The frame body 24 is formed in a shape into which the die 21 fits without any play. Therefore, the die 21 is positioned at the die standby position D by being fitted into the frame 24. Further, the support base 22 has an accommodation recess 25 formed on its upper surface that communicates with the through hole 21h of the die 21 positioned at the die standby position D.

Specifically, the punch 23 has a columnar shape that fits into the through hole 21h of the die 21 with a clearance. Then, the punch 23 is inserted into the punch standby position P1 (see FIG. 3(a)), which is set above the through hole 21h of the die 21 placed at the die standby position D, and into the through hole 21h of the die 21. It is configured to be movable (moveable up and down) between the shearing position P2 (see FIG. 3(b)). Therefore, by linearly moving (descending) from the punch standby position P to the shearing position T, the punch 23 fits into the through hole 21h of the die 21 located at the die standby position X, and is mounted on the die 21. It is configured to shear the burr B from the placed workpiece W.

Here, the shearing device 20 is installed apart from the forging device 10. Specifically, the shearing device 20 is located at a position where the operator H cannot reach the die 21 installed at the die standby position D even if he extends his hand from the take-out position α (see FIG. 1) where the workpiece W is taken out from the mold 11. is set up.

The workpiece supply device 30 is interposed between the forging device 10 and the shearing device 20, and supplies the workpiece W formed by the forging device 10 to the shearing device 20. Specifically, the work supply device 30 includes a moving mechanism 31 that moves the die 21.

Specifically, the moving mechanism 31 is a robot arm having a plurality of joints, and holds the die 21 at the tip of the arm. The moving mechanism 31 moves the die 21 to a placement position X (see FIG. 1) where an operator H who takes out a workpiece W from the forging device 10 places the workpiece W, the die standby position D, and a shearing mechanism T. It is configured to be movable between a burr removal position Y (see FIG. 4(a)) where burr B remaining on the die 21 is removed after shearing. Further, the moving mechanism 31 is configured to move the die 21 to the mounting position X, the die standby position D, and the burr removal position Y in this order, and then move it to the mounting position X again.

Specifically, the placement position X is set within a range where the workpiece W taken out at the takeout position α can be placed by the operator H without moving from the takeout position α where the workpiece W is taken out from the mold 11. There is. Here, the take-out position α is not only a position where the operator H takes out the work W from the mold 11 as in the present embodiment, but also a discharge mechanism where the forging device 10 discharges the work W from the mold 11. If there is, the position also includes the position where the operator H takes out the workpiece W discharged by the discharge mechanism.

The moving mechanism 31 is configured to move the die 21 with the mounting surface 21s facing upward when moving the die 21 from the mounting position X to the die standby position D so that the workpiece W placed on the die 21 does not fall off. Furthermore, the moving mechanism 31 is configured to tilt the die 21 moved to the burr removal position Y, thereby causing the burrs B remaining on the die 21 after the shearing process to fall and be removed.

The control section C is connected to the shearing device 20 and the work supply device 30. Specifically, the control unit C is a so-called computer having a CPU, a memory, an AC/DC converter, input means, and the like. As shown in FIG. 5, the control unit C controls mechanisms such as a work supply control unit C1, a shear control unit C2, and a burr removal control unit C3 based on the burr shearing system program stored in the memory. It is configured to perform.

The workpiece supply control section C1 controls the moving mechanism 31 of the workpiece supply device 30 and supplies the workpiece W to the shearing device 30. Specifically, when the workpiece supply control unit C1 receives the workpiece supply start signal, it moves the die 21 from the mounting position X to the die standby position D, and then transmits the workpiece supply completion signal.

The workpiece supply start signal is input, for example, by a start button (not shown) provided on the burr shearing system S. Specifically, the workpiece supply start signal is transmitted when the operator H visually places the workpiece W on the die 21 placed at the placement position X and then presses the start button.

The shearing control section C2 controls the shearing mechanism T of the shearing device 30 to shear burrs from the workpiece. Specifically, when receiving the workpiece supply completion signal, the shearing control unit C2 moves the punch 23 from the punch standby position P1 to the shearing position P2, moves it again to the punch standby position P1, and then burrs the punch 23. Sends a shearing completion signal.

The burr removal control section C3 controls the moving mechanism 31 of the work supply device 30, and removes the burr B remaining on the die 21 after burr shearing is completed. Specifically, when receiving the burr shearing completion signal, the burr removal control unit C3 moves the die 21 from the die standby position D to the burr removal position Y, and then tilts the die 21 to remove the burr B. , and then moved from the burr removal position Y to the mounting position X.

Next, a procedure for manufacturing a product using the forged product manufacturing system 100 according to the present embodiment will be explained. In addition, as shown in FIG. 1, in the burr shearing system S, in an initial state, the die 21 is placed at the mounting position X, and the punch 23 is placed at the punch standby position P1.

First, the operator H forms a workpiece W with burrs using the forging device 10 . Specifically, after placing the material on the upper surface of the lower mold 11a, the operator H lowers the upper mold 11b and presses it against the material placed on the lower mold 11a. As a result, the material sandwiched between the lower die 11a and the upper die 11b is formed into a workpiece W with burrs.

Next, as shown in FIG. 1, the operator H stands at the take-out position α of the forging device 10, takes out the work W, and, without moving from the take-out position α, places the work W on the die placed at the mounting position 21 on the mounting surface 21s. Here, the operator H places the work W on the die 21 by visually fitting the part of the work W that will become a product into the through hole 21h of the die 21. After this, the operator H presses the start button to transmit a work supply start signal.

Next, when the work supply control unit C1 receives the work supply start signal, as shown in FIG. 3(a), it controls the moving mechanism 31 of the work supply device 30 to move the die 21 from the placement position X to the die standby position D. After this, the work supply control unit C1 transmits a work supply completion signal.

Next, when the shear control unit C2 receives the workpiece supply completion signal, as shown in FIG. 3(b), it controls the shear mechanism T of the shearing device 20 to shear the burr B from the workpiece W placed on the die 21. Specifically, the shear control unit C2 moves the punch 23 from the punch standby position P1 to the shearing position P2, thereby shearing the burr B from the workpiece W by the engagement between the punch 23 and the die 21. Thereafter, the shear control unit C2 moves the punch 23 from the shearing position P2 to the punch standby position P1, and transmits a burr shearing completion signal.

Note that when the workpiece W is sheared, the burr B remains placed on the placement surface 21s of the die 21, and the part that will become the product enters the accommodation recess 25 through the through hole 21h of the die 21. It is now being accommodated.

Next, upon receiving the burr shearing completion signal, the burr removal control unit C3 controls the moving mechanism 31 of the work supply device 30 to move the die 21 from the die standby position D to the burr removal position Y, and then moves the die 21 from the die standby position D to the burr removal position Y. By tilting the die 21, the burr B remaining on the die 21 after shearing is dropped and thrown into a dust box (not shown). Thereafter, the burr removal control unit C3 controls the moving mechanism 31 of the work supply device 30 to move the die 21 from the burr removal position Y to the mounting position X. This causes the burr shearing system S to return to its initial state.

According to such a configuration, the operator H can place the workpiece W taken out at the takeout position α without moving the placement position X from the takeout position α where the operator H takes out the workpiece W formed by the mold 11. By setting , the work supply device 30 can move the die 21 close to the operator H who is at the take-out position α of the forging device 10 . Thereby, the operator H can set the work W on the die 21 without leaving the take-out position α. Therefore, the operator H can supply the workpiece W to the shearing device 20 installed apart from the forging device 10 while being near the forging device 10, and the molded product manufacturing system can be improved without reducing manufacturing efficiency. can be operated by one person.

<Other embodiments> In the first embodiment, a workpiece W formed by forging is exemplified, but the workpiece W is not limited to being formed by forging. For example, it can also be used to shear off burrs B from a workpiece W formed by a forming device such as a sheet metal press or friction welding.

Further, for example, the work supply device 30 may further include a sensor that detects the position and shape of the die 21. In this case, the work supply device 30 is configured to move the die 21 to the mounting position X, the die standby position D, and the burr removal position Y based on the detection signal of the sensor, thereby improving the accuracy of positioning for each position. do. Moreover, even if the die 21 thermally expands due to the heat of the workpiece W and does not fit into the frame, the die 21 can be positioned relative to the punch based on the detection signal of the sensor. Note that as the sensor, for example, a photoelectric sensor can be used.

Further, in the first embodiment, the work supply device 30 is configured to move the die 21 between the mounting position X, the die standby position D, and the burr removal position Y. However, the work supply device 30 may be configured to move the die 21 between the mounting position X and the die standby position D. In this case, the shearing device 20 may be one equipped with a burr removal mechanism that removes the burr B remaining from the sheared die 21 placed at the die standby position D.

Further, in the first embodiment, the shearing device 20 moves the punch 23 from the punch standby position P1 to the shearing position P2 without moving the die 21 from the die standby position D. Not limited. For example, the shearing device 20 may be configured to move the die 21 from the die standby position D to the shearing position without moving the punch 23, or may be configured to move the die 21 and punch 23 from the standby position to the shearing position. You can also use it as

Moreover, the shearing device 20 may have a carrying-out mechanism for carrying out the part to be a product from the storage recess to the outside. For example, the delivery mechanism includes a storage recess, a sliding section extending from the storage recess, and a conveyor for receiving the part that will become the product falling from the end of the sliding section.

Further, the forging device 10 may form a second forming surface for forming the material into a burr shape around the forming surface 13 on the opposing surfaces 12 of the upper die 11a and the lower die 11b. In this case, the upper mold 11b brings the lower mold 11a and the opposing surface 12 into close contact with each other, and presses the material placed on the lower mold 11a. The material sandwiched between the lower mold 11a and the upper mold 11b is molded into a product shape in the part sandwiched by the molding surface 13, and into a flat shape in the part sandwiched by the second molding surface. It is formed into burr B.

In addition, it goes without saying that the present invention is not limited to the above-described embodiments, and that various modifications can be made without departing from the spirit thereof.

100 Forged product manufacturing system 10 Forging device 11 Molding die H Operator α Take-out position TS Burr shearing system 20 Shearing device 21 Die 22 Support stand 33 Punch T Shearing mechanism D Die standby position P1 Punch standby position P2 Shearing position 30 Work supply device 31 Movement Mechanism X Placement position Y Burr removal position C Control section

Claims (4)

A forging device that forms a high-temperature workpiece by hot forging , and a die and a punch, the die and the punch being moved relative to each other from a standby position to shear burrs from the workpiece placed on the die. A forged product manufacturing system comprising a shearing device,
a sensor that detects the die on which the high-temperature workpiece formed by hot forging is placed;
a movement mechanism that moves the die between a placement position where the workpiece is placed and the standby position,
A work supply device, wherein the moving mechanism is configured to position the die at the standby position based on a detection signal from the sensor. 2. The work supply device according to claim 1, wherein the placement position is set within a range where an operator of the forging device can place the workpiece formed by the forging device without moving from a take-out position where the workpiece is taken out. The moving mechanism is configured to move the die with a mounting surface on which the workpiece of the die is placed facing upward when moving the die from the placement position to the standby position. A work supply device according to claim 1 or 2. A burr shearing system that shears burrs from a high-temperature workpiece formed by hot forging in a forging device,
a shearing device that includes a die and a punch and shears burrs from the workpiece placed on the die by relatively moving the die and the punch from a standby position, respectively;
a sensor that detects the die on which the high-temperature workpiece formed by hot forging is placed;
a work supply device including a movement mechanism that moves the die between a placement position where the work is placed and the standby position,
The burr shearing system is characterized in that the moving mechanism is configured to position the die at the standby position based on a detection signal from the sensor.