JP2548067Y2 - Band caulking machine - Google Patents

Description

[Detailed description of the invention]

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a processing machine, and more particularly, to a boot band swaging machine.

[0002]

2. Description of the Related Art As is well known, a boot used in an axle connecting portion of an automobile is, for example, a resin loop-shaped boot.
The tightness is secured by tightening the band. For this reason, when tightening the above-mentioned boot band, a caulking machine having a structure as shown in FIG. 2 is used, and the operator holds the machine in his hand and sets it at a corresponding caulking point. Was.

[0003] That is, in FIG.
Has, for example, a processing machine main body 1A formed of a frame body, and a pair of holding claws 1B swingably supported at the front end in the longitudinal direction of the main body 1A for performing crimping work of a boot band. At the rear end, there is provided an actuator 1C for driving the swing of the holding claw 1B, and between these front and rear ends, the power of the actuator 1C is provided between the holding claw 1B.
Each of the transmission members 1D for transmitting the data is provided. The above-described holding claw 1B is swingably supported by being pivotally attached to an intermediate portion in the extension direction by the main body 1A, and one of the swing ends has a shape for caulking a boot band. Claw part and pin 1B1 on the other
The roller 2 is pivotally attached to the pawl through one side, and one of the above-mentioned ones is imparted with a swinging behavior in the opening direction by a spring 3 arranged on the opposing surface of the claw. The above-mentioned roller 2 is opposed to a conical portion formed at the tip of the transmission member 1D, and the transmission member 1D is sandwiched between the transmission member 1D and the main body 1A against the urging force of the spring 4. By moving to the 1B side, the claw portion is closed by being pushed and expanded by the conical portion. The actuator 1C is constituted by a hydraulic cylinder, and moves the transmission member 1D by sliding a plunger inserted therein.

In the processing machine having the above-described structure, the boot band swaged by the holding claws 1B has a loop shape as shown in FIG. The boot band is fastened to the outer periphery of the boot by narrowing the loop in a direction to reduce the loop diameter. And when narrowing down,
If the clamping pressure applied to the claw portion is too strong, the boot band clamped by the claw portion may be cut off, and if the hydraulic pressure is too weak, the crimping becomes poor and the boot band drops off or seals. There is a possibility that the performance cannot be ensured. Therefore, in order to solve such a problem, it is necessary to appropriately maintain the above-described clamping pressure. For this reason, in the processing machine 1 shown in FIG. 2, a load cell provided with a strain gauge is disposed between the front end of the plunger of the actuator 1C and the rear end of the transmission member 1D. 1
When the plunger protrudes and moves due to C, the clamping pressure is detected by measuring the reaction force applied to the transmission member 1D from the roller 2 on the clamping claw 1B side, and the hydraulic pressure setting on the actuator 1C side is determined based on the detection result. This is done so as to optimize the clamping pressure.

[0005]

However, in the above-described structure of the processing machine, the load cell 5 functions as a power transmission member between the auranja and the transmission member 1D. The moving amount corresponding to the protruding movement must be secured, and therefore, the processing machine body 1
The length of A in the longitudinal direction is increased by the amount of movement of the load cell 5 described above, resulting in an increase in size. For this reason, the distance from the plunger of the actuator 1C to the tip of the transmission member 1D corresponding to the operating portion driven by the plunger becomes long, and the linearity of the transmission member 1D at the time of sliding tends to become unstable. Therefore, for example, a guide member indicated by reference numeral 6 is required along the movement path of the transmission member 1D.

[0006] Therefore, the enlargement of the processing machine as described above is premised on the fact that this processing machine is held and used by an operator, so that portability is deteriorated and work efficiency is adversely affected. Further, the need for a guide member for the transmission member may complicate the structure.

Accordingly, an object of the present invention is to provide a processing machine having a structure which can be reduced in size with a simple structure and which can improve portability and workability in view of the above-mentioned problems in the conventional processing machine. .

[0008]

In order to solve this object, the present invention is directed to a pair of holding claws which are hingedly connected to the front end of a main body so as to be openable and closable, and a front face of an actuator supported by the main body. A plunger that is provided and driven forward and backward by the actuator; a transmission member that swings in a direction to open and close the holding claw in conjunction with advance and retreat of the plunger; and a holding claw side that applies a holding pressure by the holding claw to the transmission member. And a structure that is set by detecting a reaction force from the plunger.The transmission member is formed in a conical shape on the end opposite to the side facing the plunger, and by increasing the amount of advance of the plunger. In a band caulking machine for swinging a holding claw in a closing direction, an actuator accommodating the plunger is slidably mounted on a tip of a main body of the machine. The plunger is slidably supported along the direction in which the plunger advances and retreats, and a load cell equipped with a strain gauge is fixed to the main body of the processing machine in a state in which a load cell having a strain gauge is opposed to or abutted on a side of the actuator opposite to a position where the plunger projects. Wherein the load cell detects a reaction force acting on the transmission member, which is generated when the plunger is driven forward, by directly contacting the rear surface of the actuator.

[0009]

[0010]

According to the present invention, the plunger of the actuator is directly connected to the transmission member, and the reaction force transmitted from the transmission member to the plunger is applied to the hydraulic chamber in the actuator,
The pressure obtained when the actuator is displaced by the reaction force applied to the hydraulic chamber can be detected by the load cell facing or in contact with the actuator.

[0011]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Referring to FIG. 1, an embodiment of the present invention will be described in detail.

FIG. 1 is a sectional view corresponding to FIG. 2 showing a main structure of a processing machine according to an embodiment of the present invention. A processing machine 10 according to this embodiment is similar to the processing machine shown in FIG. A pair of holding claws 10B is provided on one side in the longitudinal direction of the main body 10A. The above-described holding claw 10B is swingably supported by being hingedly connected to the main body 10A via a pin 10A1 located at an intermediate portion in the extension direction, similarly to the structure shown in FIG. In one of the moving ends, in FIG.
A claw portion 10B1 for holding the boot band 11 from the direction indicated by the symbol F, and a main body 10A on the other of the swing ends.
And a rotatable roller 10B2 pivotally attached to a pin 10A2 fixed to the pin 10A2. The above-described holding claw 10B is given a swinging behavior of opening the claw portion 10B1 in a normal state by the bias of the spring 10C disposed at a position facing the claw portion.

On the other hand, the above-mentioned roller 10B2 faces the conical expanded portion 12A located at the tip of the transmission member 12, as in the case shown in FIG. The direction of movement of the transmission member 12 is set along the longitudinal direction of the processing machine main body 10A, and the rear end of the transmission member 12 is directly connected to a plunger 13A of an actuator 13 to be described later so as to be able to interlock.

That is, the actuator 13 has a hole 13B which penetrates a part of its outer wall along the moving direction of the transmission member 12, and the hole 13A is provided on the body 10A side. A certain support rod 14 is fitted. That is, the above-described support rod 14 is
A plurality of flanges 10A3 are provided so as to allow the actuator 13 to move in a parallel direction, and one end in the direction is formed on the main body 10A.
Attached to. Therefore, the actuator 13
Can move along the support rod 14 described above, and this movement is caused by the plunger 13 inserted therein.
A is generated by a reaction force from the transmission member 12 acting on A.

That is, the actuator 13 has the rear end of the plunger inserted therein.
The space is partitioned by a piston (not shown) provided at the rear end of 3A, and one of the spaces communicates with an oil passage from a hydraulic pressure source (not shown), and the other of the spaces communicates with a return passage. The transmission member 12 is protruded in a state where a constant oil pressure is applied to one of the above-mentioned spaces, and
The reaction force applied to the transmission member 12 when the other of the swinging ends of the zero is to be pushed and expanded acts on one of the spaces, and the pressure in this space can be increased. It is moved in the direction opposite to the protruding direction, and the amount of movement is an amount corresponding to the magnitude of the above-described reaction force.

On the other hand, a load cell 15 equipped with a strain gauge is disposed on the rear end face of the actuator 13 described above. That is, the load cell 15 is fixed to the other end of the support rod 14 in the axial direction via the bolt 16 so as to be immovable with the main body 10A. A small gap is provided at the rear end face of the negative electrode 13 so as to oppose or contact the rear end face. Therefore, the actuator 13 described above is
When the actuator 13 is moved by the reaction force acting on the actuator 2, the actuator comes into contact with the rear end face of the actuator 13 so that the amount of distortion due to the movement can be detected by a strain gauge.

Since the present embodiment has the above structure,
The rear end of the transmission member 12 is directly connected to the plunger 13A of the actuator 13. Therefore, the boo
When swaging the band 11, the actuator 13
The oil from the hydraulic pressure source is supplied to one of the space portions to extrude the plunger 13A. The cone-shaped expanding portion 1 located at the tip of the transmission member 12 in conjunction with the pushing of the plunger 13A
2A is moved, the other swinging end of the holding claw 10B is opened, the claw portion located at one of the swinging ends is closed, and the boot band 11 is closed.
Caulk.

On the other hand, when the boot band 11 is swaged, when the transmission member 12 comes into contact with the roller 10A2 of the holding claw 10B by pushing out the plunger 13A, it is positioned at one of the swing ends of the holding claw 10B. Spring 10C
A force required for caulking is applied to the transmission member 12 as a reaction force to the movement of the transmission member 12 in the pushing direction. Therefore, this reaction force is applied to the plunger 13A integrated with the transmission member 12.
Acts on one side of the space of the actuator 13 through the valve, but since the pressure in this space is constant and the actuator 13 is movable, one volume of the space is maintained constant. Therefore, the actuator 13 moves on the support rod 16 toward the rear end.
For this reason, the movement of the actuator 13 generates the distortion of the load cell 15 and the magnitude of the reaction force, in other words, the force required for caulking can be determined. By determining the pressure, the pressure required for caulking the hydraulic source can be set.

[0019]

As described above, according to the present invention, the transmitting member, which is the operating member of the holding claw, is directly connected to the plunger of the actuator, and the actuator in which the above-described plunger is inserted is attached to the processing machine body. The actuator is movable by the reaction force received by the transmission member, and the load cell is provided on the side to which the actuator moves, so that no member is required between the plunger of the actuator and the transmission member to perform the crimping. Force can be detected. Therefore, when the plunger is pushed out, the transmission member only works directly, so that the distance between the actuator and the holding claw is only the movement distance of the transmission member,
Since this movement distance essentially corresponds to the minimum distance required for swinging of the holding claw, the length of the processing machine main body in the longitudinal direction is smaller than that of the structure shown in FIG. Can be shortened. In addition, the actuator is
Sliding along the plunger advance / retreat direction with respect to the body tip
Supported when the load cell is driven forward by the plunger
The reaction force acting on the transmission member generated in the
Response is good because it is detected by directly contacting the rear surface of the
You.

According to the above-described results, the processing machine can be reduced in size with a simple structure, and the portability and the workability in carrying can be improved.

[Brief description of the drawings]

FIG. 1 is a cross-sectional view illustrating a structure of a main part of a processing machine according to an embodiment of the present invention.

FIG. 2 is a cross-sectional view corresponding to FIG. 1 showing a main part structure of a conventional processing machine.

FIG. 3 is a perspective view showing parts to which the processing machine shown in FIGS. 1 and 2 is applied;

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 10 Processing machine 10A Processing machine main body 10B Clamping claw 12 Transmission member 13 Actuator 13A Plunger 14 Support rod 15 Load cell

 ──────────────────────────────────────────────────続 き Continuing on the front page (72) Inventor Mitsui Fujii 2-1-13 Mizushima Kaigandori, Kurashiki City, Okayama Prefecture, Sanyo Giken Limited Company (56) References JP-A-61-4632 (JP, A) Kaisho 61-64932 (JP, U)

Claims (1)

(57) [Scope of request for utility model registration] A pair of clamping claws pivotally supported by a hinge at the front end of the main body so as to be openable and closable; a plunger provided on a front surface of an actuator supported by the main body and driven forward and backward by the actuator; A transmission member that swings in a direction to open and close the holding claw in conjunction with advance and retreat; and a structure that sets a holding pressure by the holding claw by detecting a reaction force applied to the transmission member from the holding claw side. In the band caulking machine, the transmission member is formed in a conical shape at the end opposite to the side facing the plunger, and swings in a direction to close the holding claw by increasing the amount of advance of the plunger. An actuator accommodating the plunger so as to be slidable is slidably supported with respect to a front end portion of the main body of the processing machine along a moving direction of the plunger. A load cell provided with a strain gauge is fixed to the main body of the processing machine in a state where the load cell having a strain gauge is opposed to or abutted on the side opposite to a position where the plunger projects in the actuator, and the load cell is driven when the plunger is driven forward. A band caulking machine characterized in that the generated reaction force acting on the transmission member is detected by directly contacting the rear surface of the actuator.