CN210359988U

CN210359988U - Skin stretching welding tool

Info

Publication number: CN210359988U
Application number: CN201920810896.8U
Authority: CN
Inventors: 杨绪东; 刘伟伟; 赵河林
Original assignee: Henan Senyuan Heavy Industry Co Ltd
Current assignee: Henan Senyuan Heavy Industry Co Ltd
Priority date: 2019-05-31
Filing date: 2019-05-31
Publication date: 2020-04-21
Anticipated expiration: 2029-05-31

Abstract

The utility model belongs to the field of skin welding and fixing, in particular to a skin stretching welding tool, which comprises a supporting body and a welding tool body, wherein the supporting body is used for propping against the outer side of a framework to be welded with skin; and the stretching driving device is arranged on the supporting body, and the output end of the stretching driving device is used for being fixedly connected with the skin to be welded directly or through a connecting piece, and stretching the skin to be welded by taking the supporting body as a fulcrum. The skin can be leveled and positioned by drawing of the stretching driving device, so that the skin is kept in a tensioning state in the welding process, and the skin is ensured to have higher flatness after the welding is finished.

Description

Skin stretching welding tool

Technical Field

The utility model belongs to covering welded fastening field, concretely relates to covering stretch welding frock.

Background

In the field of industrial manufacturing, the production and manufacture of certain products involves a production process in which a sheet skin is laid and welded on a corresponding skeleton. For example, in the production process of a van-type transport vehicle, a thin plate skin with the thickness of 1mm needs to be laid and welded on a front frame of the van-type transport vehicle, individual part deformation is easy to occur in the production and transfer processes of the skin due to the thin thickness of the skin, and when the skin is welded on the corresponding frame, individual part deformation is easy to cause when the thin plate is welded and heated due to heat input, so that the flatness of the skin is affected.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to provide a covering stretch welding frock to solve among the prior art the technical problem of welded covering unevenness on the skeleton.

In order to achieve the above object, the utility model discloses well covering stretch welding frock adopts following technical scheme:

a skin stretching welding tool comprises a supporting body, a welding head and a welding head, wherein the supporting body is used for propping against the outer side of a framework of a skin to be welded; and the stretching driving device is arranged on the supporting body, and the output end of the stretching driving device is used for being fixedly connected with the skin to be welded directly or through a connecting piece, and stretching the skin to be welded by taking the supporting body as a fulcrum.

The beneficial effects of the utility model reside in that: the supporter supports and leans on in the corresponding skeleton outside, tensile drive arrangement's output is direct or through connecting piece and the covering fixed connection that will weld, through operation tensile drive arrangement, can exert the pulling force to the covering, in order to draw the covering that warp to the leveling condition, and weld the in-process on fixing the covering on corresponding skeleton with the covering to the covering, tensile drive arrangement keeps the tractive effect to the covering all the time, the covering is in tensile state, make its stress even to past tensile direction, overcome the welding stress that welding process heat input arouses, avoid the covering to warp in welding process, ensure from this that the covering can weld on corresponding skeleton flatly.

Furthermore, the stretching driving device comprises a pull rod and a nut in threaded fit with the pull rod, the pull rod penetrates through the support body, and the nut is located on one side of the support body, which is far away from the output end.

Has the advantages that: the nut and the pull rod are in threaded fit to form a nut screw mechanism, stepless adjustment of movement of the output end can be achieved, in addition, the nut and the pull rod are in fit to have a locking function, and after the output end is adjusted to a proper position, the output end can be stably located at the adjusted position only by stopping operation on the nut.

Furthermore, a gasket sleeved on the pull rod is arranged between the nut and the support body.

Has the advantages that: the setting of gasket prevents direct frictional contact between nut and the supporter, improves the durability of covering stretch welding frock.

Furthermore, at least two pull rods are arranged on the support body in parallel.

Has the advantages that: at least two pull rods are arranged, and the output ends of the stretching driving devices can output more stable pulling force under the synergistic action of the pull rods.

Further, the support body is a frame structure.

Has the advantages that: the supporting body is of a frame structure, so that the weight of the supporting body is reduced, and the use of the skin stretching welding tool is facilitated.

Furthermore, the output end of the stretching driving device is connected with the connecting piece, an inverted T-shaped upturning prevention limiting piece is arranged between the connecting piece and the supporting body, the lower part of the upturning prevention limiting piece is positioned below the supporting body and is blocked by the supporting body, and the upper part of the upturning prevention limiting piece penetrates through an inner hole of a frame formed by the supporting body and is connected with the connecting piece.

Has the advantages that: the anti-upturning limiting part is arranged, so that the connecting piece and the pull rod can be prevented from upturning relative to the supporting body due to the reaction force of the skin when the connecting piece applies the pulling force to the skin. And the upper part of the upturning-preventing limiting part penetrates through an inner hole of a frame formed by the supporting body to be connected with the connecting piece, so that the compact structure of the skin stretching welding tool is ensured.

Further, a movable allowance which is not smaller than the thickness of the skin to be welded is arranged between the upturning prevention limiting part and the supporting body.

Has the advantages that: the movable allowance which is not smaller than the thickness of the skin to be welded is arranged between the upturning prevention limiting part and the supporting body, so that the connecting piece can be upturned for the supporting body in a certain amount, the connecting piece can be lifted and pressed on the skin during use, the skin is pressed between the connecting piece and the corresponding framework, the skin can be tightly attached to the corresponding framework, and the welding operation in the later period is facilitated.

Further, the connecting piece is a connecting plate.

Has the advantages that: the connecting piece is arranged to be of a plate-shaped structure, so that an enough connecting position is ensured between the connecting piece and the skin, and the connecting operation of the connecting piece and the skin is facilitated.

Drawings

Fig. 1 is a schematic structural view of the middle skin stretch welding tool of the present invention;

FIG. 2 is a diagram of the state of the middle skin stretch welding tool of the present invention;

in the figure: 1. a first cross member; 2. a second cross member; 3. a third cross member; 4. a fourth cross member; 5. a connecting plate; 6. a pull rod; 7. a nut; 8. connecting blocks; 9. a limiting rod; 10. a connecting portion; 11. a framework; 12. and (4) covering the skin.

Detailed Description

As shown in fig. 2, the structure and use of the skin stretch welding tool of the present invention will be described by taking the welding of the skin 12 to the frame 11 as an example.

The utility model discloses well covering stretch welding frock mainly includes the supporter, and during the use, the supporter top is leaned on in the 11 outsides of skeleton, and covering stretch welding frock still includes tensile drive arrangement, and tensile drive arrangement's output and covering 12 are directly or indirectly connected to exert the pulling force to the covering, thereby straighten the covering 12 that will warp, and make covering 12 keep the tensioning state in welding process.

The utility model discloses the structure of well covering stretch welding frock is shown in figure 1, in this embodiment, the supporter is the frame construction that forms by four first fixed linking to each other of crossbeam, wherein, first crossbeam 1 is used for leaning on the outside at skeleton 11, second crossbeam 2 sets up with first crossbeam 1 relatively, third crossbeam 3 and fourth crossbeam 4 play the connection and set up between first crossbeam 1 and second crossbeam 2, each crossbeam is the quarter bend of suitable length, in other embodiments, the crossbeam can also adopt materials such as angle steel, square steel.

As for the specific structure of the telescopic driving device, in this embodiment, the telescopic driving device includes a pull rod 6 and a nut 7, where as shown in fig. 1, the pull rod 6 is inserted into a corresponding mounting hole formed on the second beam 2, one end of the pull rod is suspended in the inner hole of the support body toward the first beam 1, and is used for mounting and fixing a connecting member connected to the skin 12 as an output end, and the other end of the pull rod is away from the output end and is provided with a thread to be suspended from the second beam 2, and is used for mounting the nut 7, the nut 7 and the second beam 2 are in blocking fit along the axial direction of the pull rod 6, and the pull rod 6 can be translated toward the direction away from the first beam 1 by screwing the nut 7, and the skin 12 to be welded is stretched with the support body.

In order to prevent the nut 7 from wearing away in direct contact with the second beam, in the present embodiment, a washer, not shown, is provided between the nut 7 and the second beam 2. In other embodiments, the spacer may not be disposed between the nut and the second cross beam, regardless of the effect of wear between the nut and the second cross beam on the service life of the skin stretch welding tool.

In this embodiment, two tie rods 6 are arranged in parallel along the length extension direction of the second beam 2, the connecting member is a connecting plate 5, and the tie rods 6 are indirectly connected with the skin 12 through the connecting plate 5. The connecting plate 5 is a plate-shaped structure with the length extending direction consistent with that of the first cross beam 1, and the connecting plate 5 and the two pull rods 6 are fixedly connected so as to ensure that the connecting plate 5 can keep a stable state when applying force to the skin 12. The two ends of the connecting plate 5 are respectively and correspondingly attached to the third beam 3 and the fourth beam 4, and the stability of the reciprocating movement of the pull rod 6 and the connecting plate 5 is facilitated under the support of the third beam 3 and the fourth beam 4. Of course, in other embodiments, in order to simplify the structure of the skin stretch welding tool, a pull rod may be further provided. More than three pull rods can be arranged to ensure that the output end of the stretching driving device can more stably draw the skin. The connecting piece can also be a connecting rod or a connecting block and other structures.

Since the end of the pull rod 6 for connecting and fixing with the connecting plate 5 is suspended in the middle space of the frame-shaped body, in the present embodiment, a connecting block 8 is provided between the pull rod 6 and the connecting plate 5 to fix the connecting plate 5 on the pull rod 6. In other embodiments, the pull rod may be used to fix the connecting plate by bending one end of the connecting plate upward. Of course, a thread may be formed at one end of the pull rod facing the second cross beam and a nut may be sleeved on the end of the pull rod, the pull rod is fixedly connected to the connecting portion through the nut, and one end of the pull rod facing away from the second cross beam serves as a rotation operation end.

Because the action point of the connecting plate 5 on the skin 12 and the axis of the pull rod 6 are not on the same horizontal plane and are repeatedly used for a long time, the fit clearance between the pull rod 6 and the corresponding mounting hole on the second cross beam is increased due to abrasion, at this time, the reaction force of the skin 12 on the connecting plate 5 easily causes the connecting plate 5 and the pull rod 6 to be upturned relative to the supporting body, so that the skin 12 cannot be attached to the framework 11, and subsequent welding operation is not facilitated.

Specifically, in the embodiment, the upturning prevention limiting member is a T-shaped structure, the lower portion of the upturning prevention limiting member is a limiting rod 9, the upper portion of the upturning prevention limiting member is a connecting portion 10, the limiting rod 9 is arranged at the lower portion of the supporting portion, two ends of the limiting rod 9 are respectively and correspondingly matched with the third beam 3 and the fourth beam 4 in a blocking manner in the up-down direction, the connecting portion 10 is a U-shaped structure with two folded edges, and the two folded edges of the connecting portion 10 are respectively and fixedly connected with the connecting plate 5 and the limiting rod 9, so that the limiting.

In other embodiments, the stop rod and the connecting portion may be of an integral structure. Of course, the L-shaped anti-tip-up limiting member may be fixed to at least one end of the connecting plate, and a folded edge of the L-shaped anti-tip-up limiting member is hooked on a lower end surface of the third beam or the fourth beam, so as to achieve traction of the connecting portion. Of course, the upturning prevention limiting part can be fixedly connected with the pull rod so as to limit the upward movement of the pull rod and the connecting half.

Further, in this embodiment, a movement allowance not smaller than the thickness of the skin 12 to be welded is provided between the tip-up prevention limiting member and the support body, and when the tool is used, the connecting plate 5 can be lifted up, so that the connecting plate 5 can be pressed on the skin 12, thereby ensuring that the skin 12 can be tightly attached to the framework 11, and facilitating subsequent welding operation. In other embodiments, no moving allowance may be provided between the limiting member and the supporting body, and the connecting portion and the skin are fixed in a butt joint manner when in use. Of course, on the premise that the upturning height of the connecting plate relative to the supporting body does not affect the welding quality of the subsequent skin, the upturning prevention limiting part does not need to be arranged.

The utility model discloses well covering stretch welding frock's specific application method does: as shown in fig. 2, based on the rectangular structure of the framework 11, four skin stretch welding tools are arranged, the four skin stretch welding tools are symmetrically arranged on two sides of the framework 11 and are arranged corresponding to four corners of the framework 11, then the skin 12 is laid on the framework 11, the nut 7 is unscrewed, the position of the connecting plate 5 is adjusted, so that the connecting plate 5 of each skin stretch welding tool is pressed on the edge of the skin 12, each connecting plate 5 is fixed with the skin 12 in a spot welding manner, then the nut 7 is screwed, so that the pull rod 6 drives the connecting plate 5 to move back to the framework 11, the skin 12 is tensioned by applying a pulling force to the skin 12, and meanwhile, the positioning of the skin 12 is realized, based on the self gravity of the skin stretch welding tools, a support body of the skin stretch welding tools can be stably pressed against the framework 11, and then the skin 12 is welded and fixed on the framework 11, and after the welding operation is finished, cutting off welding spots between the connecting plate 5 and the skin 12, and disassembling the skin stretching welding tool.

In other embodiments, in order to ensure the stability and reliability of the abutting between the supporting body and the framework, the supporting body may also be fixed to the framework during use, for example, by spot welding. For the number of the used skin stretching welding tools, in actual production, only two skin stretching welding tools can be used, and during specific operation, two corners of the skin are welded on the frame, and then the skin stretching welding tools are arranged at the remaining two corners to draw the skin.

The utility model discloses embodiment 2 of well covering stretch welding frock, this embodiment is different from embodiment 1, and in embodiment 1, the supporter is frame construction, and in this embodiment, the supporter is flat plate-like body, and plate-like body's one end is used for pushing up and leans on the skeleton, sets up the riser on the plate-like body in order to be used for installing the pull rod, because the axis of pull rod is higher than the supporter, can directly need not to set up the connecting plate with pull rod and covering fixed connection. Of course, the stretching driving device can also be an air cylinder or a hydraulic cylinder, and the telescopic rod of the air cylinder or the hydraulic cylinder can be used as the pull rod.

Claims

1. The utility model provides a covering stretch welding frock, characterized by includes:

the supporting body is used for propping against the outer side of the skeleton of the skin to be welded;

and the stretching driving device is arranged on the supporting body, and the output end of the stretching driving device is used for being fixedly connected with the skin to be welded directly or through a connecting piece, and stretching the skin to be welded by taking the supporting body as a fulcrum.

2. The skin stretch-welding tooling of claim 1, wherein the stretch-drive device comprises a pull rod and a nut in threaded engagement with the pull rod, the pull rod passes through the support body, and the nut is located on a side of the support body facing away from the output end.

3. The skin stretch welding tool according to claim 2, wherein a gasket sleeved on the pull rod is arranged between the nut and the support body.

4. The skin stretch-welding tooling as claimed in claim 2 or 3, wherein at least two tie rods are arranged in parallel on the support body.

5. The skin stretch-welding tool of claim 1, wherein the support body is a frame structure.

6. The skin stretch-welding tooling of claim 5, wherein the output end of the stretch driver is connected to the connecting member, an inverted-T-shaped anti-tip-up limiting member is disposed between the connecting member and the support body, the lower portion of the anti-tip-up limiting member is located below the support body and is stopped by the support body, and the upper portion of the anti-tip-up limiting member passes through an inner hole of a frame formed by the support body and is connected to the connecting member.

7. The skin stretch-welding tooling of claim 6, wherein a movement margin not less than the thickness of the skin to be welded is provided between the tip-up prevention limiting member and the support body.

8. The skin stretch-welding tooling of claim 6 or 7, wherein the connecting member is a connecting plate.