JPH07267B2 - Gripping and crimping tool - Google Patents

Description

Description: TECHNICAL FIELD The present invention relates to a gripping and crimping tool, in particular, welding of a synthetic resin material having a rod shape or a column shape (including a hollow shape) such as a synthetic resin belt, The present invention relates to a grip and crimping tool for operations such as adhesion.

(Prior Art) The conventional welding or bonding of the ends of rod-shaped or columnar materials such as synthetic resin belts has been performed as follows.

(1) After both ends of a rod-shaped or columnar synthetic resin material cut into a predetermined length are grasped by both hands, and the end surfaces are brought into contact with a hot plate surface or an adhesive applicator to heat-melt or apply an adhesive ,
Both ends are pressure-bonded and welded or bonded.

(2) Both ends of a rod-shaped or columnar synthetic resin material cut into a predetermined length are held by a pair of jacks, and the end faces are brought into contact with a hot plate or an adhesive applicator to heat-melt or apply the adhesive. After that, both end faces are pressed to weld or adhere.

(Problems to be Solved by the Invention) However, the above-mentioned means (1) for manually welding both ends by welding to both ends does not require any tools, but it is an object such as a synthetic resin material. There is a problem that the human hand that grips the end of the product may be heated or may come into contact with the adhesive, and in the means (2) using the yatco, two sets of yatco are used with both hands. Not only can they be welded and adhered unless they are operated at the same time, but it is difficult to accurately align both ends of the left and right rod-shaped or columnar synthetic resin materials, etc., which are individually gripped by two sets of Yatco. In addition, in any of the above means (1) and (2), it is not easy to obtain a uniform pressure-bonding force, so that there is a problem in that welding or adhesion state varies due to uneven pressure-bonding force.

In view of such a conventional example, the present invention is at the time of welding or bonding. Since both ends of the object can be easily and quickly aligned and a uniform crimping force can be applied, and these operations can be performed by the same operator, the above-mentioned problems do not occur. It is intended to provide a grip and crimping tool.

(Means for Solving the Problems) In order to solve the problems in the conventional example as described above, the present invention provides a pair of pivotally mounted members 5 that are urged in the opening direction by springs 6 at all times. Of the pair of connecting plates 23 and 24 in which the leg portions 16 and 19 of the pair of receiving jaws 15 and 18 are rotatable relative to each other and are pivotally attached 25 in the X-shape to the outward bending portions 2 and 4 of the handles 1 and 3 of FIG. The shafts 21 and 22 are attached together with one end, and the other ends of the pair of connecting plates 23 and 24 are slidably engaged with the guide grooves 17 and 20 of the leg portions 16 and 19 of the receiving jaws 15 and 18 by the pins 26 and 27. Together with the handle 1,
The locking pin 14 is provided on one of the 3 and the other handle 3 is
A base of a stopper 8 having a hook 9 which engages with the locking pin 14 at its end is rotatably supported by a spring washer 12 through a shaft mount 11
In addition, the stopper 8 is constantly elastically pressed against the handles 1 and 3 by the spring washer 12, and the engaging surface 10 of the stopper 8 with the locking pin 14 is engaged with the hook 9 of the stopper 8 and the engaging member. By bringing both handles 1 and 3 close to each other from the opening restriction position of both handles 1 and 3 by engagement with the stop pin 14,
The hook 9 of the stopper 8 is formed so as to be released from the locking pin 14, and push jaws 28 and 33 that are elastically pressed toward the jaws 15 and 18 are provided above the jaws 15 and 18, respectively. It is a thing.

(Operation) Since the present invention has the above-described structure, the distance between the handles 1 and 3, and hence the distance between the jaws 15 and 18, can be adjusted by the stopper 8 with the hook 9 serving as the opening control means and the locking 14. After holding the jaws 15 and 18 constant, the push jaws 28 and 33 on the jaws 15 and 18 are opened, and the end portions VA and VB of the object such as the synthetic resin belt V between the jaws 15 and 18 are fixed at both ends thereof. After inserting so that the surfaces come into contact with each other, the jaws are tightened and grasped by the pushing jaws 28 and 33, and then the spring 6
By bringing the handles 1 and 3 close to each other by sliding on the engaging surface 10 of the stopper 8 with the hook 9, the stopper pin 14 and the stopper 8 which is constantly elastically pressed by the spring chain 12 to the handle 3. After opening the opening restricting means by engaging with, while extending the interval between the jaws 15 and 18 by the spring 6 for one day, and moving the end of the target object around the hot plate H or the adhesive applicator. ,
Both handles 1 and 3 are slightly opened and both end faces of the object are brought into contact with the hot plate H or the adhesive applicator to heat and melt or apply the adhesive, and then the handles 1 and 3 are again opened. The two receiving jaws 15 and 18 are separated from the hot plate H or the adhesive applicator by bringing them close to each other, and then both handles 1 and 3 are opened by the spring 6 to bring both receiving jaws 15 and 18 close to each other, and the object After crimping the both ends of the, and welding or adhering, etc.
28, 33 is released against the elastic force, the target object is separated from between the receiving jaws 15, 18, gripping the target object for welding of another round belt end, coating of the object to be coated, etc. Prepare for crimping.

Embodiment An embodiment of the present invention will be described below with reference to the drawings.

1 and 2 are a plan view and a side view of an embodiment of the present invention. In both figures, 1 and 3 have a pair of outer open bent portions 2 and 4 at their ends, and a pair of handles rotatably attached to a shaft 5, and 6 between both handles 1 and 3, and both handles 1 and 3. 3 is a compression spring provided so as to be always opened, and the compression spring 6 has a winding portion 7 in the center, and the winding portion 7 is located between the handles 1 and 3, whereby Excessive proximity of 1 and 3 and thus unnecessary opening of the jaws 15, 18 is prevented.

Reference numeral 8 denotes a stopper as an opening control means for the handles 1 and 3, the stopper 8 having a hook 9 at an end thereof, the base of which is rotatable with respect to the handle 3 via a spring washer 12 and
The shaft 11 is attached so that it can be locked at any position. 10 is stopper 8
Engaging surface with the locking pin 14, 13 is the top of the locking pin 14 provided on the handle 1, 15 and 18 are receiving jaws, and the receiving jaws 15 and 18 are inverted U-shaped in side view (Fig. 2) And the leg pieces as the upper and lower legs.
The ends of 16, 16 and 19, 19 are rotatably attached to the outer open bent portions 2, 4 of the handles 1, 3 by shafts 21, 22.

Between the leg pieces 16 and 19, connecting plates 23 and 24, which are rotatably attached to a shaft 25, are arranged. One end of each of the connecting plates 23 and 24 is attached to the leg piece 16 by the shafts 21 and 22. , 19 together with the outwardly bent portion 2,
4 is pivotally attached to the other end, and the other end is connected to the leg pieces 16, 16 through the pins 26, 27.
It is slidably supported in the guide grooves 17, 20 of 19, 19. Reference numeral 28 denotes a pushing jaw in which both leg portions 29, 29 are attached to both sides of the receiving jaw 15 by a shaft 31, and the pushing jaw 28 is constantly pressed by a spring 32 toward a receiving groove 40 on the upper surface of the receiving jaw 15.

The pushing jaw 33 attached to the upper portion of the receiving jaw 18 has the same supporting structure as the supporting portion of the receiving jaw 28, and its legs are rotatably attached to the side portion of the receiving jaw 18 by a shaft 36. At the same time, the spring is constantly pressed against the receiving groove side of the receiving jaw 18.

In addition, the receiving groove 40 may be provided with two or three of different sizes on the upper surfaces of the receiving jaws 15 and 18, and the inner surface of the groove 40 is formed as a rough surface having a large friction coefficient. To be done.

Next, the operation of this embodiment will be described with reference to an operation example in which both ends of the synthetic resin belt V are grasped, heated, melted and pressure-bonded.

First, the handles 1 and 3 in the open position (outer than the chain line positions 1B and 3B in FIG. 1) by the spring 6 are moved to the first position against the spring 6.
When the hooks 9 of the stopper 8 are engaged with the locking pins 14 after the positions shown by the solid lines 1 and 3 in the figure, the opening degrees of the handles 1 and 3 become constant, and the shafts 21, The X-shaped connecting plates 23 and 24 attached to the shafts 21 and 22 and the pin 2
Receiving jaws 15, 18 supported via 6, 27, guide grooves 17, 20 etc.
Is a constant interval Q corresponding to the opening degree of the handles 1 and 3.

In this state, the pressing portion 30 of the pressing jaw 28 on the one receiving jaw 15
2 against the spring 32, it is rotated clockwise in FIG. 2 to be separated from the receiving groove 40, and one end VA of the synthetic resin belt V cut to a predetermined length between both jaws 15 and 28 is After inserting, press part 3
The pressing force on the belt material (V) is released, and one end VA of the belt material (V) is held by the spring 32 force.

Next, the pressing portion 35 of the pushing jaw 33 on the other receiving jaw 18 is pushed to release the pushing jaw 33 from the receiving groove 40 on the upper surface of the receiving jaw 18 against the spring and open the other end VB of the belt V. Insert it between the receiving groove of the other receiving jaw 18 and bring the end surface of the same end VB into light contact (with a predetermined pressure) with the end surface of the end VA, and adjust the center direction of both ends VA, VB. After matching, the pressing portion 35 is released from the pressure, and the pressing jaw 33 elastically presses and holds the same end VB to the receiving groove side of the receiving jaw 18 by the pressing force. As a result, the two ends VA and VB of the belt V are
It is gripped by 5, 18 and push jaws 28, 33, and is held at a constant interval (in a state of abutting lightly) between both end surfaces thereof.

After that, the handles 1 and 3 resist the spring 6 and the chain line position 1A,
The jaws 15, 28 and 18, 33 are brought closer to 3A, and the gaps between the jaws 15, 28 and 18, 33 are opened to form chain line positions 28A, 33A (interval P). At this time, the surface 10 of the stopper 8 is engaged with the locking pin 14. Therefore, the stopper 8 rotates counterclockwise in FIG. 1 to the chain line position 8A,
In this state, the hook 9 is not locked by the locking pin 14.

As a result, both ends VA of the gripped synthetic resin belt V are
After separating the end faces of VB and VB from each other and arranging them on both sides of the heated hot plate H, the gripping force of the handles 1 and 3 is slightly loosened and opened, and the end faces of both ends VA and VB are brought into contact with the hot plate H. Contact them to heat and melt, then grasp both handles 1 and 3 again and bring them into close proximity,
When the gripping force of both handles 1, 3 is released after separating the receiving jaws 15, 18 from both sides of the heating plate H, both handles 1, 3 are opened by the spring 6 to become chain line positions 1B, 3B (in this case, The stopper 8 is located at the chain line position 8B, but since the hook 9 of the stopper 8 is not engaged with the locking pin 14 in the above 8A, the stoppers 8 are prevented from being opened to this position. ), Push jaws 28, 33 together with jaws 15, 18 in chain line positions 28B, 3
It becomes close to 3B, and becomes an interval R where both end portions VA and VB of the belt V abut against each other and are pressure-bonded, and the both end surfaces melted by this pressure bonding are welded. After the pressure applied by the spring 6 is maintained for the required time, after welding of the 14 ends VA and VB of the belt V is completed,
The pushing jaws 28 and 33 are separated from the upper surfaces of the receiving jaws 15 and 18 against the spring 32, and the belt V after the attachment is separated from the jaws 15, 28 and 18, 33.

The distances L, M, N between the shafts 21, 22 for attaching one of the connecting plates 23, 24 and the pins 26, 27 for attaching the other are the open / close positions 1A and 3A, 1 and 3, 1B of the handles 1 and 3, respectively. And 3B, and with the guide grooves 17 and 20, this minimum value of L and N
The maximum value of is regulated. The minimum value of L may be regulated by the outer diameter of the winding portion 7 of the spring 6 interposed between the handles 1 and 3.

Further, in this embodiment, both end portions V of the intended belt V are
When gripping A and VB, the distance between the two receiving jaws 15 and 18 is held constant by the stopper 8, the locking pin 14, the spring 6, etc., so that the pushing jaws 28 and 33 can be received by the same operator. The belt ends VA and VB can be inserted and gripped between the jaws 15, 18, 28, and 33, and then the belt V and the like after heating, melting, pressure bonding, and pressure welding can be opened. it can.

The pushing jaws 28 and 33 have their leg portions 29 attached to the receiving jaws 15 and 18, respectively.
Although not shown in the figure, not only shown, but up and down along a column upright with respect to the upper surfaces of the receiving jaws 15 and 18 (Fig. 2), and being pressed by the springs toward the receiving jaws 15 and 18 side. In addition, if the pulling recesses or projecting pieces of the push jaws 28, 33 are formed on the side portions of the push jaws 28, 33 that move up and down in this way, the end of the belt V can be formed. The gripping and opening operations of the parts VA and VB by the pushing jaws 28 and 33 can be performed more easily.

If the hot plate H of FIG. 1 is, for example, an adhesive applicator from which the adhesive flows out, the gripping and crimping tool is operated in the same manner as described above, whereby the synthetic resin belt V The end portions VA and VB of the rod-shaped or columnar target object such as the above can be grasped, the adhesive can be applied to the end surfaces, and the adhesion by pressure welding can be performed in the same manner as described above.

(Effects of the Invention) Since the present invention has the structure as described above and operates, the following effects can be obtained.

(1) Since the target jaw is gripped and pressed by the receiving jaw and push jaw that are far from the grasping part of the handle, operations such as heating, welding, application of adhesive, and adhesion of the target are accompanied by danger or contamination. Can be done without.

(2) Since both ends of the belt are separately gripped between the jaws and the pushing jaws while the distance between the pair of jaws is regulated by the regulating means, the centering of both ends in the grasped state and The same operator can easily perform the operation of making the contact pressure uniform.

(3) Since both ends gripped under the same condition are welded or bonded by using the restoring force of the spring without changing the gripped state by opening and closing a pair of handles, the welding or bonding state is uniform. It is possible to provide a gripping and crimping tool that can be made uniform and can perform operations such as welding and adhesion that are homogeneous and have high reliability.

(4) The leg of the chin is placed on the outwardly bent portion of the handle,
Since it is pivotally attached together with one end of a pair of connecting plates which are rotatable relative to each other and axially attached in an X-shape, and the other ends of the pair of connecting plates are slidably mounted in the guide grooves of the jaw receiving leg. Both jaws are surely moved in parallel, and heating, welding, application of an adhesive, adhesion and the like can be performed without changing the direction and center position of both ends of the grasped object.

(5) The leg portion of the push jaw is rotatably supported with respect to the receiving jaw, and the pushing jaw is provided with a pressing portion that elastically presses the receiving jaw side by a spring and releases the spring pressure. Since the push jaw is provided, the push jaw can be opened only by pushing the pushing portion of the push jaw, so that the object can be easily grasped and released.

(6) A locking pin is provided on one of the pair of handles, and a base of a stopper having a hook that engages with the locking pin at an end is rotatably attached to the other handle, and the stopper is attached. Since the handle is always elastically pressed by the spring, even if some vibration is generated in the gripping and crimping tool when the handle is operated, and when the handle is operated in any direction other than horizontal, There is no risk of the stopper wobbling or the locked state of the restricting means being inadvertently released, and therefore the gripping and crimping tool can always perform stable operation.

(7) By bringing the handles of the stopper with the locking pin close to each other from the opening restriction position of the handles by the engagement of the hook and the locking pin of the stopper, the hooks of the stopper are locked. Since it is formed so as to be released from the locking pin, the engagement between the locking pin and the stopper is automatically released by the proximity of both handles, and the crimping operation after heating or applying the adhesive is applied to the stopper. You can easily do it without touching it directly.

[Brief description of drawings]

The drawings show an embodiment of the gripping and crimping tool according to the present invention. FIG. 1 is a plan view thereof and FIG. 2 is a side view thereof. (Explanation of symbols) 1, 3 ... Handle, 2, 4 ... Outward-opening bent portion, 5, 1
1, 25, 31 …… Shaft, 6 …… Spring, 8 …… Stopper, 9…
… Hook, 10 …… engagement surface, 12 …… Spring washer, 14 …… Locking pin, 15,18 …… Jaw, 16,19 …… Leg piece, 17,20 …… Guide groove, 21,22 , 26, 27 …… Pin, 23, 24 …… Connecting plate, 2
8, 33 …… push jaws, 29 …… legs, 32 …… springs.

Claims (1)

[Claims] 1. A pair of receiving jaws 15 and 18 are attached to outer open bending portions 2 and 4 of a pair of handles 1 and 3 which are pivotally attached to each other 5 and are normally biased in an opening direction by a spring 6. The legs 16 and 19,
A pair of connecting plates 23, 24 that are rotatable with respect to each other and are axially attached to each other 25.
And the other ends of the pair of connecting plates 23 and 24 are slidably inserted into the guide grooves 17 and 20 of the leg portions 16 and 19 of the receiving jaws 15 and 18, respectively. In addition to engaging with each other, one of the handles 1 and 3 is provided with a locking pin 14, and the other handle 3
The base of a stopper 8 having a hook 9 that engages with the locking pin 14 at its end is rotatably mounted via a spring washer 12.
11, and the stopper 8 is constantly elastically pressed against the handles 1 and 3 by the spring washer 12, and the engaging surface 10 of the stopper 8 with the locking pin 14 is connected to the hook 9 of the stopper 8 with the hook 9. Formed so that the hook 9 of the stopper 8 is released from the locking pin 14 by bringing the handles 1 and 3 closer to each other from the opening restriction position of the handles 1 and 3 by engagement with the locking pin 14. Further, a gripping and crimping tool characterized in that push jaws (28, 33) that are elastically pressed toward the jaws (15, 18) are provided above the jaws (15, 18).