JPH0615822U - Hydraulic puncher - Google Patents

Abstract

(57) [Abstract] [Purpose] A punch and die that are mounted on an electric hydraulic pump or the like via a hydraulic cylinder can be used for all drilling angles with a simple and convenient structure. [Structure] A joint 2 is interposed between a hydraulic cylinder 1 and an electric hydraulic pump 3. The joint 2 is attached to the electric hydraulic pump 3 so as to be rotatable about an axis L by a predetermined angle, and the hydraulic cylinder 1 is attached so as to be swingable via a hinge pin 10, so that the relative positional relationship between the hydraulic cylinder 1 and the electric hydraulic pump 3 is free. To be able to choose. The hinge pin 10 is formed with an annular groove that communicates with the oil passages of the hydraulic cylinder 1 and the joint 2, respectively, and both annular grooves are communicated with each other by a communication hole so that hydraulic oil is supplied even when the hydraulic cylinder 1 swings.
Can be discharged.

Description

[Detailed description of the device]

[0001]

[Industrial applications]

 The present invention relates to a hydraulic puncher for punching a punch hole having a diameter larger than that of a pilot hole in a panel or the like made of a steel plate or an aluminum plate.

[0002]

[Prior art]

 For example, in power distribution boards and control boards at construction sites, it is common to make holes for mounting conduits and other parts in panels, etc. After drilling with a drill, etc., this pilot hole is used to drill a punch hole having a diameter several times the diameter of the pilot hole.

For such punching work, for example, a hydraulic puncher as shown in FIGS. 12 to 15 is used. This hydraulic puncher is composed of a hydraulic cylinder 100 to which a punch and a die are attached, and a drive unit 101 composed of a manual hydraulic pump 101A or an electric hydraulic pump 101B for operating the hydraulic cylinder 100. In the hydraulic cylinder 100, as shown in FIG. 16, a set bolt 103 is connected to a piston 102, and hydraulic oil is supplied from the set bolt side into the cylinder tube 104 as shown by an arrow in the drawing so that the piston 102 is pulled in and moved. Then, the structure is such that the compression coil spring 105 arranged on the side opposite to the set bolt of the piston is used for return movement. The set bolt 103 is inserted into the prepared hole of the plate W to be processed, and the cylinder tube 104 is inserted through the collar 106. The plate P to be processed is sheared by pulling and moving the punch P attached to the set bolt 103 with respect to the die D fixedly held.

As described above, the drive device 101 includes the manual hydraulic pump 101A or the electric hydraulic pump 101B. The manual hydraulic pump 101A is, as shown in FIG. 17, an oil tank housed in the tubular grip portion of the tool. 107, an oil pressure pump unit 108 connected to the oil tank 107, and a hand lever 109 for operating the hydraulic pump unit 108. The hydraulic pump unit 108 includes a plunger 110 that reciprocates by a hand lever 109. Further, as shown in FIG. 18, the plunger 110 reciprocates to suck a negative pressure of hydraulic oil from an oil tank 107, and A supply oil passage 111 with a check valve capable of pushing hydraulic oil to the hydraulic cylinder 100 as shown by an arrow in the drawing, and a return oil with a stop valve capable of returning the hydraulic oil in the hydraulic cylinder 100 to the oil tank 107 by operating the return handle 114. A path 112 is provided. Although not shown, the electric hydraulic pump 101B has an oil tank 107 and a hydraulic pump unit 108 similar to those of the manual hydraulic pump 101A. For example, the plunger 110 of the hydraulic pump unit 108 is reduced by an electric motor to reduce the speed and the cam crank mechanism. It is configured to reciprocate through.

Such a conventional hydraulic puncher has been devised so that it can cope with drilling at various angles, or can be easily drilled even in a narrow working space.

A pump / cylinder body type hydraulic puncher shown in FIG. 12 has a hydraulic cylinder 100 which is rotatably attached to a manual hydraulic pump 101A so that their axes are orthogonal to each other, and can be drilled at any angle orthogonal to the axis. It is what

In the hydraulic puncher integrated with the electric hydraulic pump shown in FIG. 13, a hydraulic cylinder 100 is attached to the tip of a pistol type electric hydraulic pump 101B so as to be rotatable in a plane parallel to the axis of the electric hydraulic pump 101B. Yes, it allows drilling from any angle parallel to the axis.

The pump / cylinder separated hydraulic puncher shown in FIG. 14 separates the hydraulic cylinder 100 and the manual hydraulic pump 101A, and connects the respective hydraulic oil ports through a high pressure hose 113, and only the hydraulic cylinder 100 is connected. Is moved to a drilling point so that drilling can be done from any angle in a narrow working space.

The vertical / horizontal rotary hydraulic puncher shown in FIG. 15 is disclosed in Japanese Utility Model Laid-Open No. 1-96225, and the hydraulic cylinder 100 and the manual hydraulic pump 101A are arranged with their axes aligned with each other. , The hydraulic cylinder 100 and the manual hydraulic pump 101A are connected by an L-shaped connecting pipe portion 114, and the base end portion of the connecting pipe portion 114 is freely rotatable around the axis of the manual hydraulic pump 101A at the tip end portion of the manual hydraulic pump 101A. The hydraulic cylinder 100 is engaged with the tip of the connecting pipe portion 114 so as to be rotatable in a direction orthogonal to the rotation direction of the connecting pipe portion 114, and the hydraulic cylinder 100 and the manual hydraulic pump 101A are relatively opposed to each other. The position can be freely selected three-dimensionally.

[0010]

[Problems to be solved by the device]

 In the case of the conventional hydraulic puncher as described above and above, the punching work is easy because of the integral structure, and the punching work can be performed at various angles by rotating the hydraulic cylinder portion, but depending on the punching position. The drive unit that is held by hand may be in an uncomfortable posture and difficult to operate, and in a small work space, the drive unit may hit the plate to be processed and the punching work may not be performed. In addition, the electric hydraulic pump type requires a commercial power source and has a poor workability because the cord is pulled around.

[0011] In the case of the separate type hydraulic puncher, punching work at any angle is possible in a relatively small work space with relative ease, but the operation of the manual hydraulic pump and the dropping of the hydraulic cylinder portion after completion of punching are prevented. Therefore, it is difficult to work without an auxiliary worker because it requires support.

In the case of the hydraulic puncher, since the rotational angle position of the manual hydraulic pump with respect to the hydraulic cylinder portion can be freely selected, the manual hydraulic pump can be positioned at the most easy-to-operate portion and at a position where it does not interfere with the plate to be processed. Although it can be positioned, since the hydraulic cylinder part and the manual hydraulic pump are rotatably connected using the connecting pipe part, there is a problem that the structure is complicated and the usability is poor. In addition, the manual hydraulic pump system requires extra labor and takes work time.

The present invention has been made to solve the above problems, and its purpose is to provide a relative positional relationship between a hydraulic cylinder portion and a drive device portion with a relatively simple and easy-to-use structure. An object of the present invention is to provide a hydraulic puncher which can be freely selected, and can further reduce labor and improve work efficiency.

[0014]

[Means for Solving the Problems]

 The present invention connects a hydraulic cylinder to a drive device having a hydraulic pump section capable of supplying hydraulic oil to the outside and a drive section for driving the hydraulic pump section, and transfers the hydraulic oil from the hydraulic pump section to the hydraulic cylinder. In a device that feeds and punches a material to be processed with a die and a punch connected to a hydraulic cylinder, a joint is interposed between the hydraulic cylinder and the drive unit, and this joint is attached to the drive unit around the axis. Attach the hydraulic cylinder so that it can rotate by a predetermined angle, and swingably attach it to the joint via the hinge mechanism.The hinge pin is formed with an annular groove that communicates with the hydraulic cylinder and the oil passage of the joint. It is configured to communicate with each other through the communication hole.

The drive unit is preferably an electric hydraulic pump having an electric motor in the drive unit, and the electric hydraulic pump has a built-in battery for supplying power to the electric motor.

[0016]

[Work]

 Since the hydraulic cylinder swings with respect to the joint and the joint rotates with respect to the drive device, the mounting angle of the hydraulic cylinder with respect to the drive device can be set to any angle on the front surface, and it can be used at any angle in a narrow work space. From this, it is possible to make a hole, and to position the drive device at a position where it can be easily operated, and to prevent it from interfering with the material to be processed.

The hydraulic oil from the hydraulic pump section of the drive device is supplied to the hydraulic cylinder via the oil passage of the joint, the annular groove and communication hole of the hinge pin, and the oil passage of the hydraulic cylinder, and the hydraulic cylinder is supplied to the joint. Even if rocked, the hydraulic oil can be supplied and discharged without hindrance.

By using the electric hydraulic pump, a manual operation such as a manual hydraulic pump becomes unnecessary, and the working time can be shortened. In addition, by incorporating a battery in the electric hydraulic pump, a commercial power supply is not required and the cord is not run around, improving workability.

[0019]

【Example】

 Hereinafter, the present invention will be described with reference to an illustrated embodiment. As shown in FIG. 1, this is an example in which a pistol-type electric hydraulic pump 3 is used as a drive device for operating the hydraulic cylinder 1, and each hydraulic cylinder 1 is connected to the electric hydraulic pump 3 via a joint 2. The hydraulic puncher is constructed so that the axes are aligned with each other.

The joint 2 is composed of a cylindrical portion 2A and a plate-shaped portion 2B, and is fixed to the electric hydraulic pump 3 so as to be rotatable about the axis L by 180 °. That is, as shown in FIG. 2, the base end portion of the cylindrical portion 2A is fitted into the mounting hole 9 provided at the tip outlet portion of the electric hydraulic pump 3, and the cylindrical portion 2A and the ring-shaped mounting piece 9A are connected by the coupler 4. While being screwed, the rotation of the cylindrical portion 2A is restricted by the two lock pins 11 and the one lock bolt 12.

More specifically, the coupler 4 has female end screws 15 and 16 which are screwed into the ring-shaped mounting piece 9A and the male screws 13 and 14 of the cylindrical portion 2A, respectively, at the pump side end portion and the intermediate portion. A ring-shaped groove 17 is formed on the inner surface of the cylinder-side end portion, and the pump-side end portion of the screwed coupler 4 and the ring-shaped mounting piece 9A are fixed by bolts 18, whereby the electric hydraulic pump 3 and the coupler 4 are fixed. Unify. The lock pin 11 is embedded in the cylindrical portion 2A so that the head protrudes into the ring-shaped groove of the coupler at an interval of 180 ° in the circumferential direction, and the tip of the lock bolt 12 is attached to the head of the lock pin 11. It is screwed onto the coupler 4 so that it can come into contact with it. After the cylindrical portion 2A is screwed to the coupler 4, the lock bolt 12 is attached, and the joint 2 is rotated while holding the plate-shaped portion 2B, the two lock pins 11 are respectively locked by the lock bolt 12, and the joint is joined. 2 can be rotated in the normal and reverse directions within a range of 180 °.

The hydraulic cylinder 1 is composed of a cylinder tube 5 having a bearing portion 5 A at its tip, a double rod type piston 6, a compression coil spring 7, and an end cap 8. The base end of the hydraulic cylinder 1 is hinged to the tip of the joint 2. It is attached via a mechanism and can swing in a plane including the axis L. The hinge mechanism is arranged so that the plate-shaped portion 2B of the joint 2, the concave groove 9 formed at the center of the plate-shaped portion 2B in the width direction, and the tip of the plate-shaped portion 2B are orthogonal to the axis L. It is composed of a hinge pin 10 and a piston rod 6B that integrally projects from the piston 6 to the outside of the cylinder on the joint side. The end of the piston rod 6B is fitted into the concave groove 9, and the hinge pin 10 is attached to the end of the piston rod 6B. Insert it into the mounting hole 19.

Although the hydraulic cylinder 1 swings 180 ° as shown in FIG. 4 by such a hinge mechanism, it may be freely rotated within the range of 180 °, or as shown in FIG. As described above, the stopper 20 pressed by the spring 21 is provided at the bottom of the concave groove 9, and the stopper holes 22 are provided at three positions at 90 ° intervals in the rotational direction at the end of the piston rod 6B for positioning. Good.

As shown in FIG. 3, a set bolt 23 and a color 24 are attached to the hydraulic cylinder 1 as in the conventional case. As the set bolt 23, two large and small bolts 23-1, 2 and 3-2 are used, and the end portion of the large-diameter set bolt 23-1 screwed with the small-diameter set bolt 23-2 is attached to the piston rod 6A of the piston 6. Screw it on. The large and small set bolts 23-1 and 23-2 are properly used according to the size of the punch die, that is, the size of the punch hole, and the collar 24 is also the three collars 24-1, 24-2, 24- shown in the figure. Use multiple colors, such as 3 or use large, medium, and small colors. The die D is fixedly held to the bearing portion 5A of the hydraulic cylinder 1 via the collar 24 or directly, and the punch P is screwed to the set bolt 23 with the plate W to be processed interposed therebetween.

As shown in FIG. 2, the hydraulic cylinder 1 is of a type in which the cylinder tube 5 is moved forward and the piston 6 is relatively retracted, and hydraulic oil is supplied to the set bolt side of the piston 6. Therefore, an oil passage 26 communicating with the hydraulic chamber on the set bolt side is formed in the piston 6 and the piston rod 6B.

In the hinge mechanism portion, since the piston rod 6 B rotates with respect to the joint 2 and the hinge pin 10, the annular grooves 27 and 28 are axially formed on the outer peripheral surface of the hinge pin 10 as shown in FIG. The oil passage 26 of the piston rod 6B is made to communicate with one annular groove 27, and the oil passage 29 formed in the joint 2 is made to communicate with the other annular groove 28 by making holes at intervals. Both annular grooves 27, 28 are communicated with each other by communication holes 30, 31, 32. Further, an O-ring having a backup ring is provided on the outer circumference of the hinge pin 10 to prevent oil leakage from the annular grooves 27, 28. The hydraulic cylinder 1 has a structure in which the cylinder tube 5 moves, but it is also possible to use a structure in which the cylinder tube 5 is connected to the hinge pin 10 and the piston 6 is retracted and moved. However, the structure in which the cylinder tube 5 is moved can be made simpler.

As the electric hydraulic pump 3, a pistol type cordless drive device as shown in FIG. 6 can be used. The electric hydraulic pump 3 includes an oil tank 33, a hydraulic pump unit 34, a cam crank mechanism 35, a speed reducer 36, a motor 37, and a battery 38. The rotation of the motor 37 is reduced by a reduction gear 36 such as a three-stage planetary reduction gear, and the cam crank mechanism 35 is operated. The cam crank mechanism 35 includes a cam 39 connected to the output shaft of the speed reducer 36, and a ring 41 to which the cam 39 is rotatably fitted and a plunger 40 of the hydraulic pump portion 34 is integrally attached. Reciprocate the plunger 40.

The hydraulic pump unit 34 has check valves 42 and 43, and can reciprocally move the plunger 40 to suck a negative pressure of the working oil from the oil tank 33 and push the working oil to the tip outlet. Further, as shown in FIG. 7, the hydraulic pump portion 34 is formed with a return oil passage 47 with a shutoff valve 44 that communicates the tip outlet portion with the oil tank 33, and by opening the shutoff valve 44 with a return lever 48. The operating oil can be returned to the oil tank 33.

The battery 38 is detachably attached to the lower portion of the grip portion and can be charged by a charger (not shown). When the switch 50 of the grip portion is turned on, the motor 37 is turned on via the micro switch 51. It is rotated (see FIG. 6). In case of emergency, the hydraulic puncher of the present invention can use a battery pack 49 through a plug 38 'as shown in FIG. The power supply can also be used.

The above-described configuration is operated as follows.

FIG. 9 shows a usage state when the axis of the electric hydraulic pump 3 is orthogonal to the plate W to be processed, and shows a virtual line when the grip portion is horizontal depending on the punching position. FIG. 10 shows a case in which the axis of the electric hydraulic pump 3 is held horizontally with respect to the plate W to be processed. FIG. 11 shows an example of a usage state in which the side surface of the shallow box is used as the plate W to be processed, and shows a case in which the axis of the electric hydraulic pump 3 is held horizontally so as to be orthogonal to the drilling direction. Thus, the die D is inserted into the set bolt 23, the hydraulic cylinder 1 is swung according to the processing position, and the set bolt 23 is inserted into the prepared hole so as to be orthogonal to the plate W to be processed. The punch P is attached to and the plate W to be processed is sandwiched between the punch P and the die D. The electric hydraulic pump 3 is rotated with respect to the coupler 4 so that the posture of the electric hydraulic pump 3 is located at a position where it can be easily operated, or the plate W to be processed is not interfered with.

When the switch 50 is turned on in this state, the hydraulic oil from the hydraulic pump section 34 is supplied to the hydraulic cylinder 1 via the coupler 4, the hinge pin 10 and the piston rod 6B, and the cylinder tube 5 moves forward. By moving the die D with respect to the fixed punch P, the punch hole is punched. Since the electric hydraulic pump 3 is gripped, there is no need to worry about punches, dies, etc. falling during punching.

When the closing valve 44 is opened by the return lever 48, the cylinder tube 5 is returned to the original position by the pressing force of the compression coil spring 7, and the working oil is returned to the oil tank 33.

[0034]

[Effect of device]

 As described above, in the hydraulic puncher of the present invention, a joint is interposed between the hydraulic cylinder to which the die and the punch are connected and the drive unit that operates this hydraulic cylinder, and this joint is rotatably attached to the drive unit. , A hydraulic cylinder is swingably attached to the joint, the hinge pin is connected to the hydraulic cylinder and the oil passage of the joint respectively, and an annular groove is formed to communicate with each other by a communication hole, and an electric hydraulic pump is used for the drive unit. Moreover, since the battery is built into this electric hydraulic pump, the following effects are achieved.

It is possible to freely select the relative positional relationship between the hydraulic cylinder portion and the drive device portion without providing a connecting pipe portion as in the conventional case, and it is possible to perform drilling at any angle with a relatively simple structure. At the same time, the drive device portion held by hand can be positioned at an appropriate position.

The hydraulic cylinder and the joint have the same axis and are connected via a hinge mechanism, which is convenient.

By using an electric hydraulic pump with a built-in battery for the drive unit, labor work by a commercial power source and human power is unnecessary, and in combination with a convenient structure, it is possible to save labor and improve work efficiency.

[Brief description of drawings]

FIG. 1 is a perspective view showing an embodiment of a cordless hydraulic puncher according to the present invention.

FIG. 2 is a vertical sectional view showing a hydraulic cylinder joint portion of the hydraulic puncher of FIG.

FIG. 3 is a vertical sectional view showing a set bolt portion of FIG.

FIG. 4 is a side view showing a swinging state of the hydraulic cylinder of FIG.

5 is a perspective view showing a hinge mechanism of the hydraulic cylinder and the joint of FIG. 2. FIG.

FIG. 6 is a vertical cross-sectional view showing the electric hydraulic pump in FIG.

7 is a sectional view taken along line VII-VII of FIG.

FIG. 8 is a front view showing a plug and a battery pack.

FIG. 9 is a side view showing an example of a usage state of the present invention.

FIG. 10 is a side view showing another example of the usage state of the present invention.

FIG. 11 is a front view showing another example of the usage state of the present invention.

FIG. 12 is a schematic side view showing a conventional pump / cylinder body type hydraulic puncher.

FIG. 13 is a schematic side view showing a hydraulic puncher including a conventional pistol type electric hydraulic pump.

FIG. 14 is a schematic side view showing a conventional pump / cylinder separated hydraulic puncher.

FIG. 15 is a schematic sectional view showing a conventional vertical / horizontal rotation type hydraulic puncher.

FIG. 16 is a vertical sectional view showing an example of a conventional hydraulic cylinder unit.

FIG. 17 is a partial cross-sectional side view showing an example of a manual hydraulic pump.

18 is a sectional view taken along line XVIII-XVIII in FIG.

[Explanation of symbols]

1 Hydraulic Cylinder 2 Joint 3 Electric Hydraulic Pump 4 Coupler 5 Cylinder Tube 6 Piston 7 Compression Coil Spring 10 Hinge Pin 27, 28 Annular Groove 26, 29
Oil passage 30, 31, 32 Communication hole

Claims (3)

[Scope of utility model registration request] 1. A hydraulic cylinder is connected to a drive device having a hydraulic pump unit capable of supplying hydraulic oil to the outside and a drive unit for driving the hydraulic pump unit, and hydraulic oil is transferred from the hydraulic pump unit to the hydraulic cylinder. In a device for feeding and punching a material to be processed with a die and a punch connected to a hydraulic cylinder, a joint is interposed between the hydraulic cylinder and the driving device, and the joint is attached to the driving device at a predetermined angle around the axis. It is rotatably mounted, and the hydraulic cylinder is swingably mounted to the joint via a hinge mechanism.The hinge pin is formed with an annular groove that communicates with the oil passage of the hydraulic cylinder and the joint, and these annular grooves are communicated by a communication hole. A hydraulic puncher that is characterized by 2. The hydraulic puncher according to claim 1, wherein the drive device is an electric hydraulic pump having an electric motor in a drive portion. 3. The electric hydraulic pump according to claim 2,
A hydraulic puncher with a built-in battery for supplying the electric motor.