JPH0376811B2 - - Google Patents

Abstract

PURPOSE:To provide a tool for holding and press bonding through which correct alignment of both end parts of a material made of columnar synthetic resin can be performed, by a method wherein a pair of holding levers on both the end parts of which receiving jaws and holding parts are provided is fitted pivotally, the end parts of both the holding levers are provided with press jaws and operation parts bending upward and both the press jaws are oppressed to both the receiving jaws. CONSTITUTION:In case of heating and welding of both end parts of a V belt made of synthetic resin by holding and press-bonding them, receiving jaws 2, 5 of end parts of holding levers 1, 4 are separated from each other by opening holding parts 3, 6, push plate 17A is pushed as per an arrow P, push jaws 10, 16 are opened by turning push levers 9, 15 and the end parts VA, VB of the belt V made of synthetic resin are mounted on the receiving jaws 2, 5. Both the end parts VA, VB are oppressed against both the receiving jaws 2, 5 by bounce of compression springs 14, 21 by releasing pressing force P of the push plate 17A. End faces of both the end parts VA, VB are fused on heating and the holding parts, 3, 6 are made such closer to each other to weld the end faces of both the end parts VA, VB together by bonding them directly with pressure. A tool for holding and press bonding is separated from a weld part of the belt V by opening the press jaws 10, 16 by pressing again the push plate 17A in the direction of the arrow P.

Description

Detailed Description of the Invention (Industrial Application Field) The present invention is a tool for gripping and crimping, particularly for welding synthetic resin materials in the form of rods or columns (including hollow ones) such as synthetic resin belts. , relates to a gripping and crimping tool suitable for bonding and the like.

(Prior art) Synthetic resin belts, which are widely used in various fields because they exhibit excellent performance in terms of corrosion resistance and durability in various environments, are mainly cut to the required length at the installation site. However, the ends of such synthetic resin belts are often welded or glued, and conventionally, the ends of such synthetic resin belts have been welded or glued to (1) rod-shaped or columnar synthetic resin cut into a predetermined length; Grip both ends of the sawn lumber with both hands, bring the end faces into contact with a heater surface or adhesive surface, heat melt or apply adhesive, and then press both end faces to weld or adhere, or ( 2) After gripping the end of a rod-like columnar synthetic resin material of a predetermined length with a pair of tools and bringing the end surface into contact with a heater surface or an adhesive surface, heating and melting or adhering the adhesive, Measures such as welding or adhering both end surfaces by pressure bonding have been taken.

(Problem to be Solved by the Invention) However, when welding or gluing by manually grasping both ends, no tools are required; There are problems such as the risk of the hands being heated or coming into contact with the adhesive, etc., and when using tools, two sets of tools must be operated at the same time with both hands to perform welding, gluing, etc. In addition, there were problems such as difficulty in accurately aligning both ends of the rod-shaped or columnar synthetic resin lumber gripped by the two sets of right and left grips.

The object of the present invention is to provide a gripping and crimping tool that does not have such problems.

(Means for Solving the Problems) In order to solve the above-mentioned problems of the conventional art, the present invention provides a pair of gripping rods each having a catch jaw and a gripping portion at both ends thereof, the central portion of which is rotatable. The shaft is attached to the
The gripping rods are each provided with a pushing jaw facing the receiving jaw at the end and an upwardly bending operating section at the base above the pivoting part of both gripping rods, and having a substantially dogleg shape in side view. The bending portions are each pivoted, and the pushing jaws are pressed against the receiving jaws.

(Function) Since this invention has the above configuration,
With the grasping parts of a pair of gripping rods pivoted to each other opened and both receiving jaws separated, pressure is applied to the pushing rod operation part which is roughly doglegged when viewed from the side to open the pushing jaws, and a bar-shaped or columnar shape is attached to both receiving jaws. After placing an object such as, release the pressure on both dogleg-shaped push rod operation parts, grip the object with both push jaws, and then grip it by bringing the gripping parts of both gripping rods close together. After heating, welding, gluing, etc., the ends of the object are brought close together, and after welding, gluing, etc. the object, pressurizes the operating part of the dogleg-shaped push rod again to open both push jaws, This gripping and crimping tool is separated from the object that has been welded or bonded.

(Example) Hereinafter, an example of the present invention will be described with reference to the drawings.

FIG. 1 shows a first embodiment of this invention.
In the figure, reference numerals 1 and 4 are gripping rods, and receiving jaws 2 and 5 and gripping portions 3 and 6 are provided at both ends of both gripping rods 1 and 4. Reference numeral 7 denotes a pivot on which both the gripping rods 1 and 4 are rotatably mounted; 8A and 8A are central upper portions of both the gripping rods 1 and 4;
This bearing 8A stands up from both sides of 4.
8A, pushing jaws 10 and 1 opposite to the receiving jaws 2 and 5;
6 at the end and an operating section 11 bent upward at the base;
17, and the bent portions of the push rods 9 and 15, which are generally dogleg-shaped in side view, are rotatably attached to the shafts 8 and 1, respectively.
Finished 8th. In addition, the receiving jaws 2, 5 and the pressing jaws 10, 1
6 are formed so as to face in the opening/closing direction of the gripping rods 1 and 4, and the inner surfaces of the respective jaws 2, 5, 10, and 16 are formed as rough surfaces with a large coefficient of friction. The operating parts 11, 17 are bent upward from the bases of the push rods 9, 15 in a dogleg shape, and are also bent from the base to the mounting portion (inside) of the shafts 7 of the gripping rods 1, 4. The operating portion 17 of the push rod 15 contacts the upper side of the operating portion 11 of the other push rod 9. 12, 19 are push rods 9, 1
A long hole provided in the central part of 6 in the length direction, 13,
Reference numeral 20 denotes a headed pin fixed to the central part of the gripping rods 1 and 4, and the headed pins 13 and 20 are connected to the elongated holes 12 and 19.
The compression springs 14, 21 are inserted between the heads of the press rods 9, 15 and the upper sides of the press rods 9, 15, and the shafts of the press rods 9, 15 are always held toward the rods 1, 4. 8 and 18 in the counterclockwise direction in FIG. 1. 17
Reference numeral A denotes a push plate extending from the end of the operating portion 17 of the push rod 15 having a substantially doglegged side surface to the area where the shafts 7 of both the gripping rods 1 and 4 are attached.

Next, the operation of this embodiment will be described with reference to FIGS. 2 to 4 for an example in which both ends of a synthetic resin belt V are gripped, pressed, heated, and welded.

First, open the grasping parts 3 and 6 with your left hand (or right hand) and separate the jaws 2 and 5 at the ends of the grasping rods 1 and 4 (distance l), and then use the index finger of the same hand to open the push plate 1.
7A in the direction of arrow P, and press the compression springs 14 and 21.
Open the push jaws 10, 16 by rotating the substantially doglegged push rods 9, 15 clockwise around the shafts 8, 18 (dotted line positions 10A, 16A in Fig. 2), and then use the other hand. Place the ends VA and VB of the synthetic resin belt V on the catch jaws 2 and 5. After that, the pressing force P of the pressing plate 17A is released, and both ends of the synthetic resin belt V are pressed by the pressing jaws 10, 16 by the elasticity of the compression springs 14, 21.
Press VA and VB against both jaws 2 and 5 (solid line positions 10 and 16 in Figure 2). Next, while maintaining this state, the grasping parts 3 and 6 are brought closer together, and the distance between the jaws 2 and 5 is reduced to m.
After heating and melting the end surfaces of both ends VA and VB of the belt V in contact with both sides of the heater 30 (Fig. 3), the gripping parts 3 and 6 are slightly spread to separate the ends.
VA, VB are separated from the heater 30, and then the grasping parts 3, 6 are brought close enough to both the jaws 2, 5 and the pressing jaw 1.
The distance between 0 and 16 is set to n (solid line positions 2, 5 and 10, 16 in Figure 4), and the end surfaces of both end portions VA and VB are directly crimped and welded. After welding, press the pressing plate 17A again in the direction of arrow P with the index finger of the same hand to remove the pressing jaws 10,
16 (dashed lines 10A and 16A in FIG. 4), and the gripping and crimping tool is pulled away from the welded portion of the belt V.

As is clear from the above explanation, when grasping the target ends VA and VB of the belt V, the distance l between the two catch jaws 2 and 5 is made to match the distance n, and both ends VA and VB are By aligning the end faces of the two ends and aligning the two end parts in advance, the two end parts VA and VB can be immediately aligned by simply bringing the gripping parts 3 and 6 close to each other without having to pay attention to the alignment of the two end parts after heating. and can be welded together.

In addition, the operation parts 11 of the double-shaped push rods 9, 15,
17 engage with each other, the compression springs 1
The compression spring 21 can be omitted if the elasticity of the push rods 9, 15 is sufficient to elastically grip the object with the push jaws 10, 16 of the push rods 9, 15.

In addition, the gripping rods 1 and 4 and the substantially doglegged pressing rods 9 and 1
Although not shown, the long holes 12 and 5 of the substantially dogleg-shaped push rods 9 and 15 shown in FIG.
19 are provided in the gripping rods 1 and 4, and headed pins 13 and 20 are provided in the approximately dogleg-shaped push rods 9 and 15.
are provided, and the headed pins 13 and 20 are connected to the gripping rods 1 and 4.
It is also possible to have a structure in which compression springs 14 and 21 are led out through the long holes 12 and 19 and provided between the headed pins 13 and 20 and the lower side of the gripping rods 1 and 4.

Further, as a means for pressurizing the substantially dogleg-shaped push rods 9, 15, although not shown, the substantially dogleg-shaped push rods 9, 15 are applied around the shafts 8, 19 to the gripping rods 1, 4.
It is also possible to have a structure in which a spring is provided to press the button in the counterclockwise direction in FIG. is the elasticity of the spring provided around the support shaft (8) of the approximately dogleg-shaped push rod 9,
16 is sufficient to press the object, the spring provided around the support shaft 18 of the push rod 15 can be omitted.

Although not shown, the operating portion 17 of the push rod 15 is brought into contact with the lower side of the operating portion 11 of the push rod 9, and the push rod shown in FIG. 1
If a push plate is provided in place of the push plate 17A provided at the end of the operating portion 17 of No. 5, the compression spring 21 can be omitted by providing the compression spring 14 with the necessary elasticity.

Note that the bearings 8A, 8A, 18A, 18A that stand up on both sides of the central parts of the gripping rods 1, 4 are connected to the push rods 9, 15.
If configured to have a guiding function during rotation, both ends A and B of the belt V can be gripped between the receiving jaws 2, 5 and the pushing jaws 10, 15, and the gripping rod can be held in the gripped state. It is possible to prevent the press rods 9, 15 from wobbling due to the thrust acting on the press rods 9, 15 when opening and closing the press rods 1, 4.

Furthermore, by appropriately selecting the elasticity of the compression spring that presses the pushing jaw against the receiving jaw, the gripping force of the object by the receiving jaw and the pushing jaw can be set to a required value.

Furthermore, if the heater 30 in FIG. 3 is, for example, an adhesive applicator from which adhesive flows out from its surface, by operating this gripping and crimping tool in the same manner as described above, the edge of the synthetic resin belt V can be It is possible to grip and press rod-shaped or columnar members such as parts VA and VB, and bond the ends with adhesive.

Next, a second embodiment of the present invention will be described with reference to FIGS. 5 to 7, which show schematic diagrams of the main parts thereof. Note that the same reference numerals and names are used for parts common to the first embodiment shown in FIG. 1 to avoid duplication of explanation. In addition, in the figure, gripping rods 1 and 4 are shown on the same line because they are on the same plane, and push rods 9 and 4 are shown by the same line.
15 is omitted from illustration to simplify the explanation, but there is no essential difference in any of them from the first embodiment shown in FIG.

In this example, the refraction angle (180° - α ₁ ) of the bent part of one of the dogleg-shaped push rods 15 is set to the refraction angle (180° - α ₂ ) of the bent part of the other dogleg-shaped push rod 9. The rotation range of the press rod 15 is approximately twice the rotation range of the press rod 9, and the press rod 15 is made larger by pressing the press plate 17A.
Until the operation part 17 of the press rod 9 comes into contact with the operation part 11 of the push rod 9, only the push jaw 16 is opened (FIG. 6), and the push plate 17 is opened.
If you press A further, the push jaw 16 will open further, and
The pressing jaws 10 are also configured to open (FIG. 7).

Next, the operation of this embodiment will be explained. First, press down the push plate 17A sufficiently to open both push jaws 10 and 16 (Fig. 7), place one end VA of the target belt V on the catch jaw 2, and then return the push plate 17A a little ( 6), the pushing jaws 16 close slightly and the pushing jaws 10 close, and the pushing jaws 10 and the receiving jaws 2 grip one end VA of the belt V. In this state, place one end VB of the belt on the catch jaw 5, and then press the push plate 17A.
When the pressing force of
figure). The above operations can be performed without changing the interval between the grasping parts 3 and 6, and the remaining operations are substantially the same as in the first embodiment.

Although not shown, the operating portion 1 of the push rods 9 and 15
1 and 17 may be reversed from those in FIGS. 5 to 7, and a push plate may be provided at the end of the operating portion 11 with a large refraction angle. In this case, by pushing the push plate, , first the pusher jaw 10 opens, then the pusher jaw 16 opens.
When the press plate is opened and the press plate is released, the press jaw 1 is first opened.
6 closes, and then the push jaw 10 closes,
The remaining operations are substantially the same as described above.

Next, a third embodiment of the present invention will be described with reference to FIG. 8, which is a perspective view of one push jaw closed and the other push jaw opened. Note that the same reference numerals and names are used for parts common to the first embodiment shown in FIG. 1 to avoid duplication of explanation.

In this embodiment, the operating portions 11 and 17 of the two substantially dogleg-shaped push rods 9 and 15 are not engaged with each other, but are individually extended around the abutment portions of the shafts 7 of the gripping rods 1 and 4,
And a push plate 11 is provided at each end of both operation parts 11 and 17.
B, 17B are provided, both push plates 11B, 17
By operating B separately, the push jaws 10, 16
open and close each part separately to open and close the end of the object (VA or VB)
can be specially gripped or released by the receiving jaws 2, 5 and the pressing jaws 10, 16, and the operation after gripping the object and the rest of the structure and operation are the same as in the first embodiment. There is no essential difference from the example.

In addition, the operation parts 11 and 1 of the substantially dogleg-shaped push rods 9 and 15
The push plates 11B and 17B can be omitted as long as the ends of the gripping rods 1 and 4 are extended around the pivoting parts of the gripping rods 1 and 4, and the gripping parts 3 and 6 can be operated by the hands that grip them.

(Effect of the invention) As explained above, according to this invention,
The structure consists of a pair of gripping rods each having a receiving jaw and a gripping part at both ends, and the central part of which is rotatably pivoted.
The gripping rods are each provided with a pushing jaw facing the receiving jaw at the end and an upwardly bending operating section at the base above the pivoting part of both gripping rods, and having a substantially dogleg shape in side view. Since the bending portions are each pivoted and the both pushing jaws are pressed against the both receiving jaws, the following effects can be obtained.

(1) Capable of gripping, approaching, and crimping a pair of rod-shaped or columnar objects with one hand.

(2) After gripping a pair of target objects to be welded, objects to be bonded, etc., align them in advance at the planned positions for welding, gluing, etc., and then, once separating them, heat, apply adhesive, etc. The opening is opened at an intermediate position for the purpose of the welding, and then brought close to the position for post-welding, gluing, etc., so that accurate welding, gluing, etc. operations can be performed.

(3) Since gripping, crimping, etc. of a pair of objects are done with the receiving jaws and pressing jaws that are separate from the grasping part, heating of the objects,
Welding, adhesion, etc. can be performed without danger or staining.

In addition, the bending angle of the operating section of one of the substantially dogleg-shaped push rods is made larger than the bending angle of the operating section of the other substantially dogleg-shaped push rod, and a push plate is placed at the end of the operating section of the push rod with a large bending angle. If provided, by operating the push plate with one hand, both push jaws can be sequentially opened and closed to grasp or release an object one object or one side at a time.

In addition, if the operating parts of the dogleg-shaped push rods are individually extended around the shaft attachment part of the gripping rod, both dogleg-shaped push rods can be
Therefore, the double-pressing jaws can be opened and closed in an exceptional manner.

In addition, by making the operating parts of the bases of both pushing rods come into elastic contact, and by providing a push plate at the end of the upper operating part, it is possible to easily open and close the pushing jaws at the same time with the hand that grasps the grasping part. .

[Brief explanation of drawings]

FIG. 1 is a perspective view of a first embodiment of a gripping and crimping tool for welding, etc. according to the present invention, and FIGS. 2 to 4 are explanatory diagrams of the gripping, approaching, and crimping actions of the end of an object according to the same embodiment. , FIGS. 5 to 7 are schematic illustrations of the structure and operation of the second embodiment of the present invention, and FIG.
The figure is a perspective view of a third embodiment of the invention. 1, 4...grip rod, 2, 5...jaw catch, 3, 6...
... Grasping part, 7 ... Axis, 8, 18 ... Axis, 9, 1
5... Push rod, 10, 16... Push jaw, 11, 17...
...Operation unit, 11B, 17A, 17B... Push plate, 1
3, 20... Headed pin, 14, 21... Compression spring.

Claims (1)

[Scope of Claims] 1. A pair of gripping rods each having a receiving jaw at one end and a gripping portion at the other end are rotatably pivoted at their central portions, and above the pivoting portions of both gripping rods, A pushing jaw facing the receiving jaw is provided at the end, and an operating portion that is bent upward is provided at the base, and the bending portion of the pushing rod, which has a substantially dogleg shape when viewed from the side, is pivoted, and both pushing jaws are provided. A gripping and crimping tool characterized in that the both receiving jaws are pressed against each other. 2. Provided on either the gripping rod or the pushing rod,
A headed pin that projects either above or below through a hole provided in either the dogleg-shaped push rod or the gripping rod, and either the upper side of the pressing rod or the lower side of the gripping rod. The gripping and crimping tool according to claim 1, further comprising a compression spring provided therebetween. 3. Claim No. 3, characterized in that a spring is provided around the shaft attachment portions of both the gripping rods and both of the approximately dogleg-shaped pressing rods, so as to keep the approximately doglegged pressing rods in resilient contact with both of the gripping rods at all times. The gripping and crimping tool according to item 1. 4. The gripping and crimping tool according to claim 1, wherein the ends of the operation parts of both the substantially dogleg-shaped pressing rods are made to face around the shaft attachment parts of both the gripping rods. 5. The gripping and crimping tool according to claim 1, characterized in that the ends of the operation parts of both of the substantially dogleg-shaped pressing rods are respectively faced around the shaft attachment portions of both of the gripping rods. 6. The operating portion of one of the substantially dogleg-shaped push rods is always brought into elastic contact with the lower side of the operating portion of the other substantially dogleg-shaped push rod around the shaft attachment portions of both gripping rods. A gripping and crimping tool according to claim 1. 7. A push plate facing around the shaft attachment portion of the gripping rod is provided at the end of the operating portion of the other substantially dogleg-shaped pushing rod, which is disposed above the operating portion of the one of the substantially dogleg-shaped pushing rods. A gripping and crimping tool according to claim 6. 8. The bending angle of the substantially dogleg-shaped push rod with the operating portion on the upper side is larger than the bending angle of the dogleg-shaped push rod with the operating portion on the bottom side. Gripping and crimping tool. 9 At the end of the substantially dogleg-shaped push rod operation part with the large refraction angle,
9. The gripping and crimping tool according to claim 8, further comprising a push plate facing around the shaft attachment portions of the pair of gripping rods.