JPH0723078Y2 - Automatic Punch Change Supply Device for Horizontal Homer - Google Patents

Description

[Detailed Description of the Invention] [Industrial field of application] This invention relates to a horizontal type homer in which a punch and a die are used to forge a metal material to form parts such as bolts and nuts. At times, it relates to a punch automatic exchange / feed device that automatically exchanges it with a new one.

[Prior Art] A conventional multi-stage horizontal homer has a plurality of units (usually 4 to
Five dies are fixed laterally at a predetermined interval, and a ram that moves forward and backward with respect to each die is provided in front of the die of the machine body, and each die is opposed to the front part of the ram. Equipped with a punch, when the ram moves forward, the material is punched into the die, and when the ram moves backward, the material is extruded from the die and transferred to the front side of the next die.
By repeating such an operation from the first die to the final die, the raw material is subjected to step-wise forging from rough to fine to form a product having a predetermined shape.

By the way, in the case of such a homer, since the powerful tapping action is repeated continuously and at high speed during operation, the abrasion damage of the punch and the die is extremely severe. In particular, punches are more worn than dies,
Therefore, it should be replaced with a new one more often than the dice.

[Problems to be Solved by the Invention] Conventionally, as such an automatic punch exchanging device, those disclosed in, for example, JP-A-63-281739 and JP-A-1-249230 are known. However, all of these known ones have the following drawbacks. First, JP-A-63-281
The one disclosed in Japanese Patent No. 739 uses an automatic punch exchange unit (robot).
The robot chuck is designed to reciprocate between the front surface of the punch case and the punch storage location provided away from the punch case to exchange punches. It is inevitable that the machine will be long, and therefore the machine will be down for a long period of time, leading to a decrease in operating rate. Not only that, but since the robot is used, the size of the exchange device is large and the cost is high. Moreover, since the chuck of the robot itself is not configured to extract a damaged punch from the punch case or press a new punch into the punch case, a punch press-in pin must be provided in addition to the punch push-out pin. Therefore, the structure of the exchanging device becomes complicated and the cost is further increased due to the fact that the robot is used. Therefore, it has been impossible to apply such a punch automatic exchanging device to the above-described multistage horizontal type homer.

On the other hand, in Japanese Patent Application Laid-Open No. 1-249230, a replacement punch to be used next is arranged behind the punch that is actually used, and a replacement punch to be used thereafter is parallel (upper) to the replacement punch. When exchanging a punch, the punch for ejecting rod provided at the back of the exchanging punch is projected to eject the punch currently used from the punch case, and at the same time, the exchanging punch behind the punch is replaced. Is pushed out to the position of the previous punch, and then the rod is retracted, so that the replacement punch to be used next, which is stocked above, is lowered behind the punch. Is advantageous in that it can be performed quickly and can be performed relatively easily. However, in the configuration of this publication, since the striking force is directly applied to the replacement punch behind the punch each time the punch is driven, there is a risk that the replacement punch may be cracked. Therefore, this method is preferable. is not. Especially when a protrusion such as a cross-shaped arrow is formed on the tip of the punch, the impact force of the punch is concentrated on the protrusion, and the protrusion is likely to be chipped. When using a punch with a different shape, it is necessary to prevent the impact force of the punch from concentrating on the protrusion by forming a recess on the rear end surface of the punch into which the protrusion fits. It requires extra processing work. Therefore, even if such an automatic punch exchanging device is applied to the above-mentioned multistage horizontal type homer, satisfactory results cannot be obtained.

[Means for Solving Problems] The present invention has been made to solve the above-mentioned conventional drawbacks, and the purpose thereof is to form a space behind the punch and not replace the punch. During operation of the machine, move the punch pressure plate to this space to receive the punching force of the punch.When exchanging the punch, move the punch pressure plate to another place to It is an object of the present invention to provide a punch automatic replacement and supply device in a horizontal type homer in which a space is present and a replacement punch is supplied to the space for punch replacement.

That is, in order to achieve the above-mentioned object, the present invention is configured such that the raw material is sequentially transferred in the lateral direction and is gradually forged from rough to fine to be formed into a product of a predetermined shape. In the homer, the punch 3 of the homer is retained by being fitted into the fitting hole 4a of the punch case 4 provided on the front surface of the ram 2, and this fitting hole is also held.
Behind 4a, there is a fitting hole 5 for receiving one replacement punch 3a in the same direction as the punch 3 when the punch is replaced.
4a is formed so as to communicate with the space 5, and the upper surface of the space 5 is opened as a receiving port 9 for the punch 3a for exchange stored in the stock case 7, and the lower surface or the side surface of the space 5 communicates with the space 5. The punch pressure plate 10 with which the rear end portion of the punch 3 abuts is moved to the space 5 except when the punch is replaced, and the void 11 is formed when the punch is replaced.
When the punch is exchanged, the front punch is pushed via the exchange punch 3a in the space 5, and the front punch is pushed to the rear of the space 5. The punch 3 is discharged forward from the fitting hole 4a of the punch case 4, and the pusher pin 6 that allows the replacement punch 3a to be fitted into the fitting hole 4a is coaxial with the punch 3 and is movable back and forth. It is arranged in.

[Operation] With the above-described configuration, when it is necessary to replace the punch with a new one due to wear or damage of the punch, the punch pressure plate 10 is first emptied from the space 5 after the operation of the machine is stopped.
Move to 11. As a result, a space for receiving the replacement punch 3a is created in the space 5, so that the replacement punch 3a is supplied to the space 5. Then, the replacement punch 3a is pushed by the forward movement of the pusher pin 6 to move the punch 3 into the punch case 4
After the replacement punch 3a is inserted into the fitting hole 4a of the punch case 4, the pusher pin 6 is retracted to its original position.

Then, the punch pressure plate 10 is moved back to the space 5. As a result, the punch replacement work is completed, and the punch pressure receiving plate 10 is used to punch the punch 3 by restarting the operation of the machine.
Will be received.

[Embodiment] An embodiment of the present invention will be described below with reference to the drawings. First
In FIGS. 4 to 4, 1 is a die fixed to a horizontal homer body (not shown), and a plurality of dies (usually 4 to 5)
Are arranged laterally at predetermined intervals. Numeral 2 is a ram provided on the Houma body so as to move backward relative to the die 1 in front of the die 1, and each die 1 is provided in the front portion thereof.
The punches 3 facing each other are attached by being fitted into the fitting holes 4a of the punch cases 4 which are individually fixed to the front surface of the ram 2. Then, as the ram 2 moves forward, the material S is driven into the die 1 by the punch 3, and when the ram 2 moves backward, the driven material S is pushed forward of the die 1 and at the same time, the second die 1 moves. By transferring the material S to the front surface and repeating such an operation, the material S is subjected to stepwise forging from coarse to fine to be formed into a product having a predetermined shape.

5 is a space formed from the rear of the punch 3 toward the rear of the punch case 4 so as to communicate with the fitting hole 4a of the punch 3, and is provided with a size capable of receiving one replacement punch 3a. The height of the bottom surface of the space 5 is set such that the replacement punch 3a is coaxial with the punch 3 when received.
Reference numeral 6 denotes a pusher pin arranged so as to be coaxial with the punch 3 behind the space 5, that is, the punch case 4 and the ram 2 behind the punch case 4, and a hydraulic mechanism incorporated in the ram 2, a cam, or any other appropriate structure. It is adapted to be moved back and forth by a driving device (neither is shown). The pusher pin 6 is moved forward when the replacement punch 3a is being supplied to the space 5, so that the punch case 4 is
The inner punch 3 is pushed through the replacement punch 3a and discharged to the front of the punch case 4, and the replacement punch 3a is inserted into the fitting hole 4a of the punch case 4 and the punch case 4 is inserted.
It is held so that it can be retracted to its original position.

Reference numeral 7 is a stock case for the replacement punches 3a, 3b, ... Standing on the punch case 4 by fixing the lower part to the upper part of the punch case 4 with bolts 8, and the lower end opening of the stock case 7. Is communicated with an exchange punch receiving port 9 opened on the upper surface of the space 5. The stock case 7 stores a plurality of replacement punches 3a, 3b, ... Stacked in a row in the same direction as the punches 3. Although not shown, a pressing device such as a spring or an air cylinder is provided above the stock case 7,
The replacement punches 3a, 3b ... May be constantly biased downward. In addition, when the replenishment chute for the replacement punch is connected to the upper end of the stock case 7 for carrying out, the replacement punch can be replenished automatically.

Reference numeral 10 denotes a punch pressure receiving plate provided so as to move over the space 5 and a space 11 formed so as to communicate with the bottom surface of the space 5. 12 is a moving device for the pressure receiving plate 10, which is a punch case 4
The air cylinder 13 is fixed to the lower end of the air cylinder 13, and the rod 14 is stroke-operated in the air cylinder 13. When the rod 14 is extended, the pressure receiving plate 10 is moved to the space 5. When the pressure receiving plate 10 moves to the space 10, the rear end of the punch 3 is brought into contact with the front end face of the pressure receiving plate 10,
Further, the rear end surface of the pressure receiving plate 10 is brought into contact with the rear portion of the punch case 4 so that the punching force of the punch 3 when the material S is driven into the die 1 by the punch 3 can be received. On the other hand, when the rod 14 is shortened, the pressure receiving plate 10 is retracted to the space 11. When moving to the retracted position, the pressure plate
The amount of downward movement of the pressure receiving plate 10 is set so that the upper surface of 10 becomes the bottom surface of the space 5.

Reference numeral 15 denotes a lock mechanism for the punch 3, and a lock pin 16 having a cutout portion 17 in which a part of the circumferential surface is cut out is inserted into the punch case 4 so as to be orthogonal to the length direction of the punch 3, and
A rotating device 18 for the lock pin 16 is provided on the side surface of the punch case 4. When locked, the lock pin 16 is rotated so that the peripheral surface portion of the lock pin 16 projects and engages with the recessed groove portion 19 provided around the outer periphery of the rear portion of the punch 3 (second
(Figure, Figure 4 state). As a result, the punch 3 is locked in the punch case 4 so as not to come out of the fitting hole 4a of the punch case 4. On the other hand, when unlocking the lock pin 16
16 is rotated (state of FIG. 3). As a result, the lock pin 16 is disengaged from the concave groove portion 19, so that the punch 3 can be pulled out to the front of the punch case 4.

Reference numeral 20 denotes a stopper plate provided laterally on the punch case 4 so that its front end faces the receiving opening 9, and is slid by a driving device 21 fixed to the side surface of the punch case 4. That is, when the replacement punch 3a is supplied to the space 5, the tip of the stopper plate 20 is retracted from the receiving port 9, and otherwise is projected to the receiving port 9 (FIG. 1). Has become.

With the above construction, when it is necessary to replace the punch with a new one due to wear or damage of the punch, after the operation of the homer is stopped, first, the moving device 12 is operated to move the punch pressure plate 10 from the space 5 to that position. Move it to the lower space 11 (Fig. 3). As a result, a space for receiving the replacement punch 3a is created in the space 5, so that the replacement punch 3a above the space 5 is dropped and supplied into the space 5 (FIG. 3). On the other hand, by driving the rotating device 18 to rotate the lock pin 16 of the lock mechanism 15, the lock of the punch 3 with respect to the punch case 4 is released. Then, the replacement punch 3a is pushed by the forward movement of the pusher pin 6 to eject the punch 3 in front of the punch case 4, and the replacement punch 3a is fitted into the fitting hole 4a of the punch case 4 to After holding the punch case 4 (FIG. 4), the pusher pin 6 is retracted to its original position. After that, the moving device 12 is operated again to move the punch pressure plate 10 back to the space 5, and the rotating device 18 rotates the lock pin 16 to the original position. Lock (Fig. 2). This completes the punch replacement work,
After that, by restarting the operation of the homer, the impact force of the punch 3 is received by the pressure receiving plate 10 when the punch 3 is driven.

Note that the replacement punch 3a to be used next is immediately lowered and loaded into the space after the replacement punch 3a is supplied from the receiving port 9 to the space 5. In that case, when the stopper plate 20 is provided as described above, the replacement punch 3b to be used next is not supplied to the space 5 except when the replacement punch 3a is supplied to the space 5 (fourth). Figure), space 5
The return movement of the punch pressure receiving plate 10 and the back-and-forth movement of the pusher pin 6 can be performed more smoothly.

Further, in the above description, the punch pressure receiving plate 10 is configured to retreat to the space 11 by moving up and down, but the space 11 communicating with the left side surface or the right side surface of the space 5 is formed and the punch pressure receiving plate 10 is formed. Even if 10 is configured to be moved to the left or right of the space 5, the same operation can be performed.

Further, in addition to the above-mentioned structure as a punch, a hollow punch can be used in the same manner even when it is forged.
That is, as shown in FIG. 5, a punch 3 having a hollow cylindrical shape is used, and a piercing pin 24 is projectingly provided on the die side. Even when a product such as a nut having a through hole is forged, the same operation can be performed. In that case, the punch roller K, which is a scrap, is generated.
It goes without saying that the punch pressure plate 10 is provided with the discharge hole 25. Reference numeral 26 denotes a flexible discharge pipe connected to the discharge hole 25.

Further, the punch pressure receiving plate 10 may be configured to move in the vertical direction or the horizontal direction as described above, or may be configured to move to the retracting direction by swinging as shown in FIG. That is, cavities 11, 11 communicating with the space 5 are formed on both left and right sides of the space 5, and the pressure receiving plate 10 is
The lower part of the pressure receiving plate 10 is pivotally attached to the punch case 4 so as to be swingable to both sides of the space 5, and the bottom surface of the space 5 is replaced at one end of the pressure receiving plate 10. The punch receiving / supporting portion 23 is attached integrally with the pressure receiving plate 10. Although not shown, it goes without saying that a swinging device for the pressure receiving plate 10 is separately provided. With this arrangement, when the punch is replaced, the pressure receiving plate 10 is moved to the right space 11 as shown in the drawing to move the receiving portion 23 below the space 5, and at the same time, the receiving portion (that The upper surface becomes the bottom surface of the space 5) 23, and the replacement punch 3a supplied into the space 5
In this state, the pusher pin 6 is moved back and forth to replace the punch, and then the pressure receiving plate 10 is returned to the space 5 (position indicated by the chain double-dashed line) in the same manner as described above. it can.

When the above-mentioned automatic punch feeder is applied to a multi-stage horizontal homer, the punches are automatically exchanged for each stage, and some punches, for example, punches with severe wear damage are punched. You may implement so that only about it can be replaced automatically.

[Effects of the Invention] As described above, according to the present invention, the punch automatic replacement device is configured such that the replacement punch disposed behind the punch is pushed by the pusher pin to replace the punch. Regardless, while the Houma is operating, by moving the punch pressure plate to the space for receiving the replacement punch, the punch pressure plate can receive the punching force, and the punching force adversely affects the replacement punch. Thus, an automatic punch automatic exchange and supply device that does not affect the temperature can be obtained.

Moreover, since the punch pressure receiving plate need only be configured to move over the space for receiving the replacement punch and the empty space formed in communication with the lower surface or the side surface of the space, the punch pressure receiving plate can be implemented with a simple structure.

Since the punch pressure receiving plate is moved to the empty space when the punch is exchanged, the punch pressure exchanging plate can be replaced by the pusher pin without disturbing the punch pressure receiving plate.

Therefore, according to the present invention, not only is there no risk of the replacement punch cracking, but even if the punch has a protrusion at its tip, it can be carried out without any extra processing on the punch. In addition, the punch replacement work can be performed quickly and can be performed with a simple configuration, and it is possible to provide an automatic punch automatic replacement supply device suitable for application to a multi-stage horizontal homer equipped with a large number of punches. Become.

[Brief description of drawings]

FIG. 1 shows the essential parts of an automatic punch automatic feeding / feeding device in a horizontal type home according to the present invention. FIG. 1 is a front view showing a part in section, and FIG. 2 is a sectional view taken along line II-II in FIG. Fig. 3 is a sectional view of the same as above in which the punch pressure plate is retracted to an empty space and the replacement punch is supplied into the space. Fig. 4 is the same as above, in which the pusher pin is moved forward to replace the replacement punch. FIG. 5 is a sectional view showing a state in which the punch case is held, FIG. 5 is a sectional view showing an embodiment in the case of forging using a hollow punch, and FIG. 6 is a front view showing another embodiment of a punch pressure plate. FIG. 2 ... ram, 3 ... punch, 3a, 3b ... replacement punch,
4 ... Punch case, 5 ... Space, 6 ... Pusher pin, 7 ... Stock case, 9 ... Replacement punch inlet, 10 ... Punch pressure plate, 11 ... Vacancy, 15 ... Lock mechanism , 20 …… Stopper plate, S …… Material.

Claims (1)

[Scope of utility model registration request] 1. A homer punch 3 comprising a homer configured to be formed into a product having a predetermined shape by stepwise forging from a coarse material to a fine material by sequentially transferring a raw material laterally. Is held by being fitted into the fitting hole 4a of the punch case 4 provided on the front surface of the ram 2, and one replacement punch 3a is provided behind the fitting hole 4a when the punch is replaced. 3, a space 5 for receiving in the same direction as 3 is formed in communication with the fitting hole 4a.
The upper surface of the replacement punch 3a stored in the stock case 7
And a space 11 communicating with the space 5 is formed on the lower surface or the side surface of the space 5.
Further, the punch pressure receiving plate 10 with which the rear end portion of the punch 3 abuts
Is moved to the space 5 except when the punch is exchanged, and is moved to the space 11 when the punch is exchanged. Further, behind the space 5, the space is moved forward when the punch is exchanged. The punch 3 in front of the punch 3a is pushed through the punch 3a for exchange, the punch 3 is ejected forward from the fitting hole 4a of the punch case 4, and the punch 3a for exchange is also pushed.
A punch automatic exchange and supply device in a horizontal type homer, in which a pusher pin 6 for allowing the insertion into the fitting hole 4a is arranged coaxially with the punch 3 and movable back and forth.