JP2002103097A - Hand press - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a hand press providing a spot welding mark of good external appearance to a joined part after repairing a vehicle and capable of operating in hand held. SOLUTION: The press is provided with a pair of arms 2 which are arranged with one of operating lever 4 and has a opening part 3 to be put into a joining part of a vehicle sheet metal, a punch 5 and a die 6, which are arranged to the opening part 3 of the arm 2, are abutted on the joining part of the vehicle sheet metal and form a spot welding mark, and a power link mechanism 7 having the other operating lever 74 to drive the punch 5 in power magnification.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention belongs to a technical field related to repair of a sheet metal of a vehicle.

[0002]

2. Description of the Related Art Heretofore, spot welding is generally widely used for joining sheet metals in manufacturing a vehicle. In spot welding, since a material to be welded is pressed and welded with an electrode, spot welding marks are left after welding. The spot welding mark having a good appearance has a design property in a vehicle sheet metal.

Further, spot welding marks having a good appearance are formed by a large spot welding machine which generates a large pressurizing and holding force.

[0004]

However, in general, at a repair site of a vehicle, joining of a vehicle sheet metal cannot be performed by a large spot welding machine, and joining is performed by arc welding or adhesive bonding. In the arc welding, since a surplus of a weld metal is generated at a portion to be joined, the surplus is shaved after welding to improve the appearance of a vehicle sheet metal. Adhesive bonding does not change the appearance of the vehicle sheet metal in shape. In addition, a portable type spot welding machine is simply used, but spot welding marks having a good appearance are not formed due to a small pressure contact force on a portion to be joined. Therefore, in the above-described joining of the vehicle sheet metal, there is a problem that the design of the vehicle sheet metal differs before and after the repair without leaving a spot welding mark having a good appearance after the repair.

The present invention has been made in view of such circumstances, and provides a hand-operable hand press for applying a spot welding mark having a good appearance to a joint after repair at a repair site of a vehicle. That is the task.

[0006]

Means for Solving the Problems To solve the above-mentioned problems, a hand press according to the present invention employs the following means.

That is, a hand press according to a first aspect of the present invention includes a pair of arms having one operation lever and having an opening capable of entering a joint portion of a vehicle sheet metal, and joining a vehicle sheet metal provided at the opening of the arm. A punch and a die for forming a spot welding mark on the portion, and a booster link mechanism having the other operating lever for driving one of the punch and the die with a booster.

According to this means, the vehicle sheet metal can be made to penetrate into the opening of the arm by a hand-held operation, and the punch and the die can be applied to the joint of the vehicle sheet metal according to the shape of the vehicle sheet metal. In addition, since the vehicle sheet metal can be pressed against with a light driving force, a spot welding mark having a good appearance is formed.

Further, as described in claim 2, claim 1
In the above hand press, the punch or the die is detachably provided on the arm.

According to this means, it is possible to select a punch and a die according to the shape of the joint of the vehicle sheet metal.

[0011] Further, as described in claim 3, claim 1
Or the hand press described in 2 above, further comprising an adjusting mechanism for adjusting a facing distance between the punch and the die.

According to this means, it is possible to form a desired spot welding mark in accordance with the thickness of the joint portion of the vehicle sheet metal.

[0013]

Embodiments of a hand press according to the present invention will be described below with reference to the drawings.

[0014] The hand press 1 is used to
This figure shows a spot welding trace formed by a hand-held operation.

As shown in FIGS. 1 to 4, the hand press 1 has a pair of arms 2 having one operation lever 4 and having an opening 3 which can enter a joint portion of a vehicle sheet metal.
A punch 5 and a die 6 provided in the opening 3 of the vehicle and forming a spot welding mark on the joint of the vehicle sheet metal, and a booster link mechanism 7 having the other operation lever 74 for driving the punch 5 with a booster. Is provided.

The arm 2 is provided with a coupling portion 25 at one end with the inner surfaces 26 of the pair of arms 2 formed in an arc shape facing each other to form an internal space 33, and an opening 3 at the other end. It becomes. At this time, a region 34 into which the vehicle sheet metal can enter is formed in the internal space 33 at an interval wider than the interval between the openings 3. Further, one operation lever 4 is provided extending from the coupling portion 25 of the arm 2 to the outside of the internal space 33.

A punch 5 and a die 6 are provided at the tips 21 and 22 of the arm 2. Specifically, a punch holder 27 is provided at one end 21, and the punch 5 is held by the punch holder 27 so as to be slidable up and down.
A die holder 28 is provided at the other end 22, and the die 6 is held by the die holder 28.
The die 6 is arranged coaxially with the punch 5. It is desirable that the punch 5 and the die 6 are spaced apart from each other by a distance W at which a joining portion of the vehicle sheet metal can enter.

The holders 27 and 28 are made of a block material, and the block material is fixed to the tips 21 and 22 of the arm 2. Alternatively, it may be formed integrally with the arm 2 at the tips 21 and 22 of the arm 2.

Further, a tapered portion 29 is provided on the outer shape of the die holder 28 so as to be able to come into contact with a corner portion of the vehicle sheet metal.

The punch 5 is formed in a vertically long column shape, for example, in a cylindrical shape fitted in the fitting hole 23 of the punch holder 27. One end 51 is connected to the boost link mechanism 7, and the other end 52 is formed with a projection 53 forming a spot welding mark on the end face. The specific shape of the convex portion 53 is preferably a dome shape in which a corner of the tip is chamfered with an R. The punch 5 can be detached from the punch holder 27 of the arm 2 by disconnecting the punch 5 from the boost link mechanism 7. Specifically, this is done by removing the set screw 725 of the boost link mechanism.

The die 6 is formed, for example, in a cylindrical shape having a threaded portion formed on the outer peripheral surface so as to be screwed into the screw hole 24 of the die holder 28. At one end 61, a concave portion 63 that forms a spot welding mark is formed at the end surface, and at the other end 62, an adjusting groove 64 is formed at the end surface to adjust the distance between the punch 5 and the die 6 facing each other. This adjustment is performed by rotating the adjustment groove 64 of the die 6 to move the die 6 forward and backward. Further, the die 6 is further advanced and retracted so that the screw holes 2 are formed.
4 is detachable. The adjusting mechanism and the attachment / detachment structure are not limited to the above-described means, but may be any other structure as long as the die 6 can be moved up and down and removably with respect to the die holder 28.

The boost link mechanism 7 is provided with a punch 5 of the arm 2.
The other operating lever 74, a connecting plate 73 for rotatably connecting the other operating lever 74 and the arm 2 and a connecting plate 73 for rotatably connecting the other operating lever 74 and the arm 2 And a pressure lever 72 connected to the punch and driven by the other operating lever 74 to a boost.

The other operation lever 74 is formed in an elongated shape, and has a shaft hole 71 at one end thereof at a predetermined interval.
1 and a shaft hole 722 are provided. The shaft hole 711 is rotatably fitted to the connection shaft 75, and the connection shaft 75 is connected to the connection plate 7.
3 is locked to the shaft hole 731 via the spacer 733.
As the locking means, for example, the connecting shaft 75 is protruded from the end surface of the connecting plate 73 and E-shaped retaining rings 734 are fitted to both ends of the connecting shaft 75. The shaft hole 712 is rotatably fitted to the connection shaft 76, and the connection shaft 76 is
The second shaft hole 722 locks. As the locking means, for example, a screw groove is formed in the pressure lever 72 and fixed from the side surface of the connecting shaft 76 with a set screw 724.

The other operating lever 74 is connected to the connecting shaft 7.
The pressure lever 72 is driven by using the connecting shaft 76 as an operating point with the fulcrum 5 as a fulcrum. That is, the distance from the connecting shaft 75 of the other operation lever 74 to the portion to be hand-held and the connecting shaft 75
The driving force is boosted by the ratio of the distance from the drive shaft to the connecting shaft 76.

The pressure lever 72 is formed by connecting one end of a pair of members sandwiching the arm 2 and the other operation lever 74, and has a shaft hole 721 at the other end and a shaft hole 72 at a predetermined position.
2 are provided. The shaft hole 721 is fitted to the connecting shaft 77 rotatably fitted to the arm 2. The connecting shaft 77 is locked in the shaft hole 722 by a set screw or the like.

The pressure lever 72 includes the pressure lever 7.
The punch 5 is locked with the rotation direction 2 as the longitudinal direction. As the locking means, for example, the punch 5 is loosely fitted between a pair of members of the pressure lever 72 and fixed with a set screw 725.

The pressure lever 72 is driven by the other operation lever 74 with the connection shaft 77 as a fulcrum, and this driving force is applied to the connection portion 7 by the punch 5 locked to the pressure lever 72.
26.

The connecting plate 73 is composed of a pair of elongated members sandwiching the arm 2 and the other operation lever 74, and has shaft holes 731 and 732 at both ends. The shaft hole 732 is fitted to the arm 2 via a spacer 733 and a connecting shaft 78 rotatably fitted to the arm 2. Connecting shaft 78
Is locked to the shaft hole 732 by an E-shaped retaining ring or the like. Note that the spacer 733 may be formed integrally with the connection plate 73.

In addition to the embodiment shown above,
It is also possible to adopt a configuration in which the punch 5 and the die 6 are replaced. Specifically, the die 6 is held by the punch holder 27 and connected to the boost link mechanism 7, and the punch 5 is held by the die holder 28.

Further, the shape of the end faces of the punch 5 and the die 6 is not limited to the concavo-convex shape, and a desired spot welding mark is formed by making it a predetermined shape.

In the embodiment configured as described above, for example, usage modes as shown in FIGS. 5 to 10 are adopted.

That is, first, the one operation lever 4 and the other operation lever 74 of the hand press 1 are hand-held and driven in a direction (arrow A) to open the space between both levers. Thereby, as shown in FIG. 5, the interval between the punch 5 and the die 6 is widened.

Next, as shown in FIG. 6, the vehicle sheet metal 8 joined to the opening 3 of the arm 2 is caused to enter, and the die 6 is applied to the joint 9 of the vehicle sheet metal 8. At this time, even if the vehicle sheet metal has a box shape or a bag shape, as shown in FIG.
Since the shape L and the like of the vehicle sheet metal 88 can enter the region 34 of the internal space 33 of the arm 2, the die 6 can be applied to the joint 99. Further, the engaging portion 2 of the arm 2
By tapering 7, as shown in FIG. 8 (X in FIG. 7), one of the tapered portions 29 is applied to a corner portion 89 of the vehicle sheet metal 88 to form a spot welding mark on the joint portion 99. Is also possible.

Subsequently, by driving the operation lever 4 and the other operation lever 74 in a direction (arrow B) to close the interval between the two levers, the projection of the punch 5 is recessed through the vehicle sheet metal 8 into the recess 63 of the die. Press against Thereby, as shown in FIG. 9, the vehicle sheet metal is deformed along the shape of the punch 5 and the die 6.

Thereafter, the one operating lever 4 and the other operating lever 74 are returned and the punch 5 and the die 6 are opened to form an uneven shape 80 as shown in FIG. The uneven shape 80 has the same shape as the spot welding mark after spot welding.

According to this embodiment, the vehicle sheet metal 8 is inserted into the opening 3 of the arm 2 in accordance with the shape of the vehicle sheet metal 8 joined.
And the die 5 and the punch 6 can be applied to the joint 9 of the vehicle sheet metal 8.

When the area 34 where the die 6 enters the vehicle metal plate 8 is small, the punch 5 or the die 6 having a different length can be replaced. Specifically, FIG.
As shown in (1), first, the die 6 is rotated and removed from the arm 2, and then, the punch 5 is removed from the fitting hole 23 of the punch holder 27 and the screw of the die holder 28 by removing the set screw 725 of the boost link mechanism 7. The hole 24 is inserted and extracted. Then, the short punch 55 and the long die 66 are attached in the reverse order to the above. As a result, as shown in FIG. 12, even when the shape L of the vehicle sheet metal 87 is long, the die 66 can be applied to the joint 97 of the vehicle sheet metal 87.

Further, the facing distance between the punch 5 and the die 6 can be adjusted according to the thickness of the joint 9 of the vehicle sheet metal 8. Specifically, as shown in FIG.
This is done by inserting the tip 91 of a tool 90 such as a screwdriver into the adjustment groove 64 and rotating the tool to move the die 6 forward and backward. As a result, a desired spot welding mark is formed according to the thickness of the joint 9 of the vehicle sheet metal 8.

Further, the other operating lever 74 is driven by a light driving force by the boosting link mechanism 7, and this driving force is transmitted by a boosting force to the punch 5 connected to the pressure lever 72,
By pressing the joining portion 9 of the vehicle sheet metal 8 between the punch 5 and the die 6, a spot welding mark having a good appearance is formed.

[0040]

As described above, in the hand press according to the present invention, after the vehicle is repaired, the punch and the die are applied to the joint portion of the vehicle sheet metal by hand-holding operation according to the shape and thickness of the joined vehicle sheet metal. And a spot welding mark with good appearance can be formed with a light driving force by the boosting link mechanism.

[Brief description of the drawings]

FIG. 1 is a perspective view showing an embodiment of a hand press according to the present invention.

FIG. 2 is a front view of FIG.

FIG. 3 is a side view of FIG. 1;

FIG. 4 is a view showing a Y direction in FIG. 3;

FIG. 5 is a diagram showing a usage example of FIG. 1;

FIG. 6 is a diagram showing an example of use of FIG. 1;

FIG. 7 is a diagram showing another example of use of FIG. 1;

FIG. 8 is a view showing an arrow X in FIG. 7;

FIG. 9 is an enlarged sectional view of FIG. 6;

FIG. 10 is an enlarged sectional view of FIG. 6;

FIG. 11 is a view showing an example of attaching and detaching the punch and the dice of FIG. 1;

FIG. 12 is a diagram showing an example of attaching and detaching the punch and the dice of FIG. 1;

FIG. 13 is a view showing an example of the adjustment mechanism of FIG. 1;

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Hand press 2 Arm 3 Opening 4,74 Operating lever 5,55 Punch 6,66 Dice 7 Boost link mechanism 8,87,88 Vehicle sheet metal 9,98,99 Joint 23 Fitting hole 24 Screw hole 27 Punch holder 28 Dice holder 33 Internal space 34 Area 53 Convex portion 63 Recess 64 Adjustment groove 72 Pressure lever 73 Connection plate 75-78 Connection shaft 80 Concavo-convex shape 90 Tool A, B Arrow

Claims (3)

[Claims] 1. A pair of arms having one operation lever and having an opening capable of entering a joint portion of a vehicle sheet metal, and a spot welding mark is formed by contacting the joint portion of the vehicle sheet metal provided at the opening of the arm. A hand press, comprising: a punch and a die to be driven; and a boost link mechanism having the other operation lever for driving one of the punch and the die with a boost. 2. The hand press according to claim 1, wherein the punch or the die is detachably provided on the arm. 3. The hand press according to claim 1, further comprising an adjusting mechanism for adjusting a facing distance between the punch and the die.