Combination of tool head and mounting table

Abstract

To provide a combination of a tool head and a mounting table which is capable of easily changing the position of the tool head according to the position of a workpiece.SOLUTION: A combination comprises: a tool head 1 including a fluid pressure cylinder 2, a movable die 4 attached to a tip end of a ram 3 of the cylinder, and a fixed die 5 attached to an output-side end part of the cylinder 2 so as not to interfere with the ram 3; and a mounting table 9 for mounting the tool head on a desired surface. A workpiece is disposed between the movable die 4 and the fixed die 5, and the movable die 4 is moved relative to the fixed die 5 as pressure of the cylinder 2 increases, thereby machining the workpiece. The tool head 1 is connected to the mounting table 9 in a freely switchable manner between being stationary and swingable about a rotation axis that has a skew positional relation with an axis of the cylinder 2 at an eccentric position in the fixed die 5.SELECTED DRAWING: Figure 2

Description

[Technical field]

[0001] The present invention relates to a combination of a tool head, such as a puncher or cutter head, which is driven by fluid pressure such as hydraulic pressure, and a mounting base on which the head is mounted. [Background technology]

[0002] A hanger rail or raceway (hereinafter simply referred to as the "workpiece") is attached to a building's ceiling, lintel, etc. with bolts or screws to hang doors, curtains, etc. in a movable manner, or to attach lighting fixtures in a powered manner. Therefore, it is usually cut to a standardized length before installation, and is transported to the site with holes drilled for the bolts or screws to pass through. Cutting is usually performed with a cutter that has a receiving blade with a slot formed therein for the rail to pass through, and a cutting blade that also has a slot formed therein and is movable in a surface pair with the receiving blade.

[0003] Cutting and drilling are sometimes performed in an assembly line with a cutter and a drilling tool placed close to each other. There are drills and hydraulic punchers as tools for drilling holes, each with its own advantages and disadvantages, with hydraulic punchers having the advantage of not producing fine chips and being quieter. This is because hydraulic punchers insert a rail between a movable punch and a fixed die, and open holes in one go by the shearing force that accompanies the fitting of the punch and die.

[0004] Both hanger rails and raceways usually have a U-shape in cross section consisting of a middle plate and both side walls, but some cutters have a groove with a downward U-shape and some have an upward U-shape. Also, there are punchers of a type in which the outer surface of the middle plate is supported by a die (Patent Documents 1 and 2) and a type in which the inner surface is supported. Therefore, there are cases in which the position of the workpiece must be changed when cutting and when punching. [Prior art documents] [Patent documents]

[0005] [Patent Document 1] Utility Model Registration No. 3011026 [Patent Document 2] Utility Model Registration No. 3019678 Summary of the Invention [Problem to be solved by the invention]

[0006] However, when cutting and drilling are performed on an assembly line as described above, if there is no need to change the position of the workpiece when cutting and drilling, work efficiency will increase accordingly. However, having multiple hydraulic tools for each process in order to adjust the position of the workpiece between the front and back processes imposes an economic burden on the worker. SUMMARY OF THE PRESENT DISCLOSURE An object of the present invention is to provide a combination of a tool head and a mounting base that enables the position of the tool head to be easily changed in accordance with the position of the workpiece. [Means for solving the problem]

[0007] In order to solve the problem, the combination of the tool head and the mounting stand of the present invention is as follows: A tool head including a fluid pressure cylinder, a movable die attached to the tip of a ram of the cylinder, and a fixed die attached to the output end of the cylinder so as not to interfere with the ram, and a mounting table for mounting the tool head on a desired surface, the tool head being arranged between the movable die and the fixed die, and the movable die and the ram are moved relative to the fixed die as the pressure of the cylinder is increased, thereby machining the workpiece, The tool head is connected to the mounting base so as to be able to swing and stand still about a rotation axis which is in a torsional relationship with the axis of the cylinder at an eccentric position in the fixed mold. It is characterized by:

[0008] According to this combination, the tool head is connected to the mounting base so as to be able to swing and stand still, so that the position of the tool head can be easily adjusted to that of the workpiece. Moreover, since the tool head is connected to the mounting base via a rotating shaft that is in a twisted positional relationship with the axis of the cylinder at an eccentric position in the fixed die, the rotating shaft does not prevent the placement of the workpiece between the movable die and the fixed die, even if the workpiece is a long object such as a rail. The movable die is typically a punch or a cutting blade, and the fixed die is a die or a receiving blade.

[0009] The combination of the tool head and the mounting base may be such that the mounting base includes support members that can be stably arranged on both sides of the tool head on the mounting surface, and a connecting member that includes the rotating shaft and connects the support members and the tool head, and the connecting member can be fixed at any height within a certain range in the vertical direction relative to the support members. This makes it possible to adjust not only the attitude of the tool head but also the height of the workpiece in the previous or subsequent process. Effect of the Invention

[0010] As described above, the combination of the tool head and the mounting table of the present invention can be used for workpieces in various positions, thereby reducing the economic burden on the operator. [Brief description of the drawings]

[0011] [Figure 1] FIG. 2 is an axial cross-sectional view showing a puncher head as a tool head used in the embodiment. [Diagram 2] FIG. 4 is a front view showing a mounting base on which the puncher head is mounted. [Diagram 3] FIG. 4 is a right side view showing the puncher head together with the mounting base. [Figure 4] FIG. [Diagram 5] FIG. 4 is an axial cross-sectional view showing a puncher head used in another embodiment. [Figure 6]13A and 13B are front views showing the main part of a puncher head used in still another embodiment, with FIG. 13A showing the bracket in an open state and FIG. DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS

[0012] -Embodiment 1- 1 to 3, the puncher head 1 used in the embodiment comprises a hydraulic cylinder 2, a ram 3, a punch 4 attached to the tip of the ram 3, a die 5 engageable with the punch 4, and a return spring 6, and punches a hole in a hanger rail W, which is a workpiece, by the shearing force of the punch 4 and die 5 which move forward together with the ram 3 as the pressure of the cylinder 2 rises, and the punch 4 is retracted by the restoring force of the return spring 6 as the cylinder 2 is released. The puncher head 1 is fixed to a stationary base 9 so that its position can be changed as necessary.

[0013] Cylinder 2 has plate-shaped connecting portions at linearly symmetric positions at its output end, with the axis of cylinder 2 (hereinafter simply referred to as "axis") as the axis of symmetry, and each connecting portion is provided with a pin hole that penetrates in the thickness direction.

[0014] The ram 3 is composed of a piston 31 and a push rod 32. The piston 31 moves forward (descending in the drawing) with an increase in pressure of oil sent from a hydraulic pump (not shown) to an oil passage 21 in the cylinder 2. The rear end face of the push rod 32 is in elastic contact with the front end face of the piston 31 due to the restoring force of a return spring 6, and the front end face holds the punch 4.

[0015] The die 5 has a flange 51 on its outer circumferential surface and is generally cylindrical, and is detachably fixed to a die holder 7. The die holder 7 includes first and second brackets 71, 72, and a holder portion 73 formed integrally with the first bracket 71 to hold the die 5.

[0016] The brackets 71 and 72 are symmetrical with respect to each other, except for the presence or absence of the holder portion 73 and the presence or absence of a connecting portion with the mounting base 9. Each is connected to the output side end of the cylinder 2 via a single connecting tool 8, which will be described in detail later, and by rotating around the connecting point, the ends farther from the cylinder 2 can move away from or toward each other with the axis of the cylinder 2 between them. The brackets 71 and 72 each have a connecting portion at the cylinder 2 side end, which has the same thickness as the connecting portion of the cylinder 2, and the connecting portion has a pin hole. The bracket 71 further has connecting portions extending in a direction away from the axis, i.e., outward, at four locations in total, up and down in the axial direction and at the front and back when viewed from the front. The front connecting portion and the back connecting portion face each other, and pin holes are provided in all connecting portions. The bracket 72 further has connecting portions at the front and back of the end farther from the cylinder 2, which face each other, and both have pin holes.

[0017] The holder part 73 extends toward the bracket 72 from the end of the bracket 71 farther from the cylinder 2, has a thin-walled tip, and has a pin hole in the thin-walled part. The bracket 72 and the holder part 73 are connected by inserting the thin-walled part into the opposing connecting part of the bracket 72 and inserting the movable pin into the pin hole. The holder part 73 further has a through hole that is coaxial with the axis and has the same inner diameter as the outer diameter of the die 5, and the die 5 is fitted into the through hole from the punch 4 side, and the flange 51 engages with the edge of the through hole so that the die 5 resists the punch 4.

[0018] The connector 8 has an H-shape in plan view, integrally having four blades, and has a hole in the center of the H shape that passes through in the axial direction and passes the push rod 32. The blades are symmetrical in front view, with the two on the left facing each other at the front and back, and the two on the right facing each other in the same way, and each has two pin holes at the top and bottom. The connector 8 and the cylinder 2 are connected by inserting the connecting part of the cylinder 2 between the opposing blades of the connector 8 and inserting the movable pins into the respective pin holes. The connector 8 and the bracket 71 are connected to the connector 8 so that the bracket 71 can swing around the movable pin to the connecting part 8 by inserting the connecting part of the bracket 71 between the opposing blades of the connector 8 and inserting the movable pins into the respective pin holes. The bracket 72 is also connected to the connector 8 so that it can swing.

[0019] Box-shaped recesses are formed inside the brackets 71, 72, and jigs 74, 74, which are T-shaped when viewed from the front, are nested in each recess so that they lie sideways facing each other and are fixed in place by ball lock pins 75, 75. Therefore, the entire assembly including the die 5, brackets 71, 72, jigs 74, 74, and connector 8 functions as a fixed member for the ram 3 and punch 4, which serve as movable members.

[0020] When the puncher head 1 is used, the connection between the bracket 72 and the holder portion 73 is released, and the brackets 71 and 72 are opened as shown by the imaginary lines in Fig. 1. Then, the brackets 71 and 72 are closed so that the hanger rail W is positioned between them, the outer surface of the middle plate of the hanger rail W is supported by the jigs 74 and the inner surface is supported by the die 5, and the thin-walled portion of the holder portion 73 is inserted into the connecting portion of the bracket 72, and the movable pin is inserted into the pin hole. In this way, the cylinder 2, the connecting member 8, the brackets 71 and 72, the holder portion 73, the die 5, and the jigs 74 are fixed to each other, and the axial movement of the hanger rail W relative to the punch 4 is prevented. Therefore, the punch 4 advances toward the die 5 as the pressure of the cylinder 2 increases, and a hole is punched in the hanger rail W.

[0021] With the puncher head 1, there is no need to insert the hanger rail W between the punch 4 and the die 5, and simply by closing the brackets 71, 72 at the intended longitudinal position of the hanger rail W where a hole is to be drilled, the hanger rail W can be positioned between the punch 4 and the die 5. Therefore, the hole drilling work is easy even for an extremely long hanger rail W, and holes can be drilled even in a hanger rail W that is attached to a building.

[0022] As shown in FIGS. 2 and 3, the mounting base 9 includes support legs 91, a platform 92, a stand 93 fixed to the upper surface of one side of the platform 92, a shaft 94, and a handle 95.

[0023] The support legs 91, 91 are each L-shaped in vertical cross section and U-shaped in plan view, and are arranged on both sides in outward line symmetry when viewed from the front. The support leg 91 has long vertical slits formed at the front and back positions when viewed from the front. The platform 92 is flat and has screw holes formed on both end faces, and a bolt is inserted through the slit and fitted into the screw hole, thereby fixing the platform to the support legs 91, 91 so as to be movable up and down between the support legs 91, 91.

[0024] The stand 93 has an axial hole penetrating from the front to the back in a front view. The shaft 94 is composed of an axial portion 94a that fits in the axial hole in a rotating pair relationship, a male screw portion 94b that extends further back than the axial portion 94a, i.e., toward the handle 95, and a connecting portion 94c that is in the form of a plate that is long in the vertical direction and in front of the axial portion 94a. Pin holes are provided at the top and bottom of the connecting portion 94c, which correspond to the pin holes of the four connecting portions facing outward of the bracket 71. The puncher head 1 is fixed to the mounting base 9 by inserting the upper and lower parts of the connecting portion 94c into the upper and lower connecting portions facing outward of the bracket 71, respectively, and inserting the movable pin into the pin hole. The handle 95 has a female screw that is in a screw pair relationship with the male screw portion 94b, and by turning the handle 95 in a direction that tightens the screw via a washer 96, the washer 96 is pressed against the stand 93, preventing the shaft 94 from rotating.

[0025] With this mounting base 9, the rotation of the shaft 94 is allowed or prevented by turning the handle 95 to loosen or tighten the screw, so that the puncher head 1 can be fixed in a desired position as shown in Fig. 4. Therefore, when drilling holes following cutting of the rail, the puncher head can be mounted so as to correspond to the position of the rail on the rail cutter, and there is no need to change the position of the rail from cutting to drilling.

[0026] -Embodiment 2- In the puncher head of embodiment 1, the first bracket 71 and the holder portion 73 are integrated. In contrast, the puncher head of this embodiment differs from embodiment 1 in that the first bracket 76 and the holder portion 77 are separate bodies as shown in Fig. 5. Therefore, the holder portion 77 can be connected to and released from both the brackets 76, 72.

[0027] -Embodiment 3- In the puncher head of the first embodiment, the jigs 74, 74 are T-shaped when viewed from the front. In contrast, the puncher head of this embodiment differs from the first embodiment in that one jig 78 is L-shaped when viewed from the front, and the other jig 78 is an inverted L-shape facing it, as shown as a main part in Fig. 6. Therefore, in this embodiment, both the jigs 78, 78 and the die 5 support the outer surface of the middle plate of the hanger rail W, and the attitude of the hanger rail W can be turned upside down from that in the first embodiment so as to counter the force applied from the punch 4. [Explanation of symbols]

[0028] 1 Puncher Head 2 Hydraulic cylinder 3. Ram 4 Punch 5 Die 6 Return spring 7 Die holder 8 Connectors 9 Stand

Claims

1. A tool head including a fluid pressure cylinder, a movable die attached to the tip of a ram of the cylinder, and a fixed die attached to the output end of the cylinder so as not to interfere with the ram, and a mounting table for mounting the tool head on a desired surface, the tool head being arranged between the movable die and the fixed die, and the movable die and the ram are moved relative to the fixed die as the pressure of the cylinder is increased, thereby machining the workpiece, The tool head is connected to the mounting base so as to be able to swing and stand still about a rotation axis which is in a torsional relationship with the axis of the cylinder at an eccentric position in the fixed mold. A combination of a tool head and a mounting base.

2. The combination of claim 1 , wherein said movable mold is a punch or cutting blade and said fixed mold is a die or backing blade.

3. 2. The combination according to claim 1, wherein the mounting base comprises support members that can be stably positioned on both sides of the tool head on the mounting surface, and a connecting member that includes the rotation axis and connects the support members and the tool head, and the connecting member can be fixed at any height within a certain range in the vertical direction relative to the support members.

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