CN212494720U - Pipe fitting end clamping device of pipe bender - Google Patents

Abstract

The utility model relates to the field of pipe bending equipment, and discloses a pipe fitting end clamping device of a pipe bending machine, which comprises a pushing piece; the pushing piece is provided with a tapered hole, and the inner surface of the tapered hole is formed into a pushing surface; a hollow clamping head is arranged in the conical hole in a penetrating way, and the clamping head is mainly formed by surrounding a multi-petal clamping sheet; the surface of the clamping piece is correspondingly provided with a conical surface corresponding to the pushing surface, and the multi-petal clamping piece is squeezed, contracted and folded by the pushing surface and clamps the pipe fitting penetrating through the clamping head; a fixing piece is arranged at one end of the pushing piece close to the conical hole, and the clamping piece is movably connected with the fixing piece; the pipe fitting end clamping device further comprises a push-pull mechanism which drives the pushing piece to move towards or away from the fixing piece. Use the technical scheme of the utility model, the stiff end of the pipe fitting of the pipe bender can be stabilized the centre gripping pipe fitting, and the tight degree of clamp can become more firm along with powerful tensile, extruded degree, prevents effectively that the pipe fitting from taking place the pine in the processing of bending and taking off the phenomenon, and the finished quality of return bend is good.

Description

Pipe fitting end clamping device of pipe bender

Technical Field

The utility model relates to a return bend processing equipment field especially relates to a pipe fitting tip clamping device of bending machine.

Background

The pipe bender is a processing machine for bending a pipe. The pipe bender is mainly used for laying and repairing pipelines in the aspects of electric power construction, highway and railway construction, chemical plants, water works, ship manufacturing and the like. When the pipe bender works, one end of the pipe fitting is set as a fixed end and is clamped on a clamping head of the pipe bender; the other end of the pipe fitting is a free end, when the free end penetrates through the bending action mechanism, the bending action mechanism processes the pipe fitting, and an arc is bent on the pipe fitting. During the processing of bending, the powerful drawing of bending machine extrudes pipe fitting itself, if the pipe fitting stiff end presss from both sides tightly infirm, then the pipe fitting can pop out and cause the incident, perhaps the arc of processing is bent the department quality and is not up to standard, and the yield is low.

In view of this, a clamping device for clamping an end of a pipe in a pipe bender is provided, which can stably clamp a fixed end of the pipe, and effectively prevent the pipe from loosening during bending and directly affecting the processing quality of the pipe.

SUMMERY OF THE UTILITY MODEL

The utility model aims at providing a pipe fitting tip clamping device of bending machine to solve the above-mentioned technical problem among the prior art.

In order to realize the purpose, the utility model discloses a technical scheme be:

a pipe fitting end clamping device of a pipe bender comprises a pushing piece; the middle part of the pushing piece is provided with a tapered hole, and the inner surface of the tapered hole is formed into a pushing surface; a hollow clamping head is arranged in the conical hole in a penetrating manner, and the clamping head is mainly formed by surrounding multi-flap clamping pieces; the surface of the clamping piece is correspondingly provided with a conical surface corresponding to the pushing surface, and the clamping pieces are squeezed by the pushing surface to shrink and fold and clamp the pipe fitting penetrating through the clamping head; a fixing piece is arranged at one end of the pushing piece close to the conical hole, and the clamping piece is movably connected with the fixing piece; the pipe fitting end clamping device further comprises a push-pull mechanism which drives the pushing piece to move towards or away from the fixing piece.

According to the utility model discloses a pipe fitting tip clamping device of bending machine, set up the hole of dodging with the bell mouth main aspects intercommunication on pushing the piece, dodge the hole and be used for dodging the main aspects of pressing from both sides tight head.

According to the utility model discloses a pipe fitting tip clamping device of bending machine, press from both sides tight piece and be provided with two lamellas of symmetry, the hollow structure that the tight piece combination of two lamellas clamp formed is cylindrical.

According to the utility model discloses a pipe fitting tip clamping device of bending machine, press from both sides tight piece and set up to the bivalve of equidimension, the hollow structure that the combination of bivalve tight piece formed is cylindrical for the bivalve.

According to the pipe fitting end clamping device of the pipe bending machine, the large end of the clamping piece is fixedly provided with the connecting rod, and the overhanging end of the connecting rod is formed with the sliding block; the fixing piece is provided with a sliding groove in sliding fit with the sliding block, and the length direction of the sliding groove is along the contraction direction of the clamping piece.

According to the utility model discloses a pipe fitting tip clamping device of bending machine, the mounting is the fixed plate.

According to the utility model discloses a pipe fitting tip clamping device of bending machine, push-and-pull institution fixes on the fixed plate.

The utility model has the advantages that:

by applying the technical scheme of the utility model, the fixed end of the pipe fitting is arranged in the hollow structure of the clamping head in a penetrating way; the push-pull mechanism works to drive the clamping head to move towards the fixing piece; during movement, the multi-petal clamping pieces of the clamping head are extruded by the pushing surfaces of the conical holes, the multi-petal clamping pieces synchronously contract inwards and are folded, and the fixed end of the pipe fitting is clamped. Then, the pipe fitting can be bent. After the bending is finished, the push-pull mechanism works reversely, the clamping head is far away from the fixing piece, the clamping head can be released, and then the clamping of the pipe fitting is released; at this point, the pipe can be removed (at which point the pipe has been machined into a bend). In addition, the clamping degree is tighter the larger the clamping head moves towards the fixing piece; of course without damaging the profile of the pipe. Therefore, the pipe fitting end clamping device of the pipe bending machine can stably clamp the fixed end of the pipe fitting, the clamping degree can be more stable along with the degrees of strong stretching and extruding, the pipe fitting is effectively prevented from loosening in the bending process, and the quality of a bent pipe finished product is good.

Drawings

Fig. 1 is a schematic structural diagram of a preferred embodiment of the present invention;

FIG. 2 is a schematic view of the construction of the pushing member (view A in FIG. 1);

FIG. 3 is a schematic view of a clamping head (view A in FIG. 1);

FIG. 4 is a schematic view of another clamping head configuration (view A in FIG. 1);

FIG. 5 is a schematic view of a slide slot on the mounting member arranged in correspondence with the clamping head of FIG. 4, and the slide slot cooperating with the slide block;

FIG. 6 is a schematic view of the arrangement of the chute avoiding abdicating holes in FIG. 5;

FIG. 7 is a schematic view (in cross section) of the sliding engagement of the slider with the runner;

reference numerals:

1-limiting rod, 2-pushing piece, 3-avoiding hole, 4-fixing plate, 5-sliding groove, 6-sliding block, 7-connecting rod, 8-screw rod, 9-clamping piece, 10-threaded hole, 11-conical hole, 12-unthreaded hole, 13-conical surface, 14-clamping head and 15-avoiding hole.

Detailed Description

The following description is provided for illustrative purposes, and other advantages and features of the present invention will become apparent to those skilled in the art from the following detailed description.

Please refer to the attached drawings. It should be understood that the structure, ratio, size and the like shown in the drawings attached to the present specification are only used for matching with the content disclosed in the specification, so as to be known and read by those skilled in the art, and are not used for limiting the limit conditions that the present invention can be implemented, so that the present invention has no technical essential meaning, and any structure modification, ratio relationship change or size adjustment should still fall within the scope that the technical content disclosed in the present invention can cover without affecting the function that the present invention can produce and the purpose that the present invention can achieve. Meanwhile, the terms such as "upper", "lower", "left", "right", "middle" and "one" used in the present specification are for convenience of description, and are not intended to limit the scope of the present invention, and changes or adjustments of the relative relationship thereof may be made without substantial technical changes, and the present invention is also regarded as the scope of the present invention.

Examples

Referring to fig. 1-7, the present invention provides a pipe end clamping device of a pipe bender, which includes a pushing member 2; the middle part of the pushing piece 2 is provided with a tapered hole 11, and the inner surface of the tapered hole 11 is formed into a pushing surface; a hollow clamping head 14 penetrates through the conical hole 11, and the clamping head 14 is mainly formed by surrounding a plurality of clamping pieces 9; a conical surface 13 is formed on the plate surface of the clamping piece 9 corresponding to the pushing surface, and the multiple clamping pieces 9 are squeezed, contracted and folded by the pushing surface and clamp the pipe fitting penetrating through the clamping head 14; a fixing piece is arranged at one end of the pushing piece 2 close to the conical hole 11, and the clamping piece 9 is movably connected with the fixing piece; the pipe end clamping device further comprises a push-pull mechanism which drives the pushing piece 2 to move towards or away from the fixing piece.

The pushing piece 2 is provided with an avoiding hole 3 communicated with the large end of the conical hole 11, and the avoiding hole is used for avoiding the large end of the clamping head 14.

The small end of the clamping head 14 extends outwards from the small end of the conical hole 11, and the large end of the clamping head 14 extends into the avoidance hole 3. In other words, the length of the clamping head 14 is greater than the length of the tapered bore 11, which increases the abutment surface in the clamping of the pipe.

The clamping piece 9 is provided with two symmetrical lobes, and the hollow structure formed by the combination of the two lobes of the clamping piece 9 is cylindrical. As shown in fig. 3.

The clamping pieces 9 are arranged into three equal-size lobes, and the hollow structure formed by combining the three lobes 9 is cylindrical. As shown in fig. 4.

The cylindrical hollow structure is matched with the outer wall of the pipe fitting, and the pipe fitting is inserted into the cylindrical hollow structure for being clamped.

The big end of the clamping piece 9 is fixedly provided with a connecting rod 7, and the extending end of the connecting rod 7 is provided with a sliding block 6; the fixed piece is provided with a sliding groove 5 in sliding fit with the sliding block 6, and the length direction of the sliding groove 5 is along the contraction direction of the clamping piece 9.

The sliding groove 5 is provided with a dovetail groove; correspondingly, the slide block 6 is limited in the dovetail groove under the driving of the contraction of the clamping piece 9 and moves along the length direction of the sliding groove 5; as shown in fig. 7. The sliding groove 5 passes through the center of the center axis of the clamping head 14 and is projected on the fixing piece. When the clamping piece 9 is provided with two petals, the sliding groove 5 is only provided with one, and can be vertically arranged. When the clamping piece 9 is provided with three pieces, the number of the sliding chutes 5 is three, the three sliding chutes are all arranged along the radius direction of a circle of which the large end of the clamping head 14 is projected on the fixing piece, and the three sliding chutes 5 are communicated in a converging way at the center of the circle; such as fig. 5 and 6.

The fixing part is a fixing plate 4.

The push-pull mechanism is fixed on the fixed plate 4.

The push-pull mechanism comprises a screw 8 and a driving motor fixed on the fixing plate 4; the pushing piece 2 is provided with a threaded hole 10 and is in threaded connection with the screw 8. Corresponding to the threaded hole 10, the pushing piece 2 is provided with a unthreaded hole 12, the limiting rod 1 penetrates through the unthreaded hole 12, and one end of the limiting rod 1 is fixed on the fixing plate 4. The driving motor drives the screw rod 8 to rotate, the pushing piece 2 cannot rotate due to the limitation of the limiting rod 1, and the pushing piece 2 can only slide along the limiting rod 1, so that the fixing plate 4 can move towards or away from the pushing piece 2.

In the above, the screw rods 8 and the driving motors may be arranged in two groups working synchronously and symmetrically. The fixed plate 4 is provided with a yielding hole 15 corresponding to the screw 8, and the yielding hole 15 is arranged to avoid the sliding groove 5. As shown in fig. 6.

In addition, the push-pull mechanism can be directly set as a hydraulic cylinder, a pneumatic cylinder or an electric cylinder, the hydraulic cylinder, the pneumatic cylinder or the electric cylinder is fixed on the fixing plate 4, and the telescopic end of the hydraulic cylinder, the pneumatic cylinder or the electric cylinder is connected with the pushing piece 2.

The above embodiments are merely illustrative of the principles and effects of the present invention, and are not to be construed as limiting the invention. Modifications and variations can be made to the above-described embodiments by those skilled in the art without departing from the spirit and scope of the present invention. Accordingly, it is intended that all equivalent modifications or changes which may be made by those skilled in the art without departing from the spirit and technical spirit of the present invention be covered by the claims of the present invention.

Claims (7)

1. A pipe fitting end clamping device of a pipe bender is characterized by comprising a pushing piece; the middle part of the pushing piece is provided with a tapered hole, and the inner surface of the tapered hole is formed into a pushing surface; a hollow clamping head is arranged in the conical hole in a penetrating manner, and the clamping head is mainly formed by surrounding multi-flap clamping pieces; the surface of the clamping piece is correspondingly provided with a conical surface corresponding to the pushing surface, and the clamping pieces are squeezed by the pushing surface to shrink and fold and clamp the pipe fitting penetrating through the clamping head; a fixing piece is arranged at one end of the pushing piece close to the conical hole, and the clamping piece is movably connected with the fixing piece; the pipe fitting end clamping device further comprises a push-pull mechanism which drives the pushing piece to move towards or away from the fixing piece.

2. The tube end clamping device of the tube bending machine according to claim 1, wherein the pushing member is provided with an avoiding hole communicated with the large end of the tapered hole, and the avoiding hole is used for avoiding the large end of the clamping head.

3. The tube end clamping device of the tube bender according to claim 1, wherein the clamping piece is provided with two symmetrical clamping pieces, and the hollow structure formed by the two clamping pieces is cylindrical.

4. The tube end clamping device of the tube bender according to claim 1, wherein the clamping pieces are arranged into three equal-size halves, and the hollow structure formed by the combination of the three clamping pieces is cylindrical.

5. The tube end clamping device of the tube bender according to claim 3 or 4, wherein the big end of the clamping piece is fixed with a connecting rod, and the overhanging end of the connecting rod is formed with a sliding block; the fixing piece is provided with a sliding groove in sliding fit with the sliding block, and the length direction of the sliding groove is along the contraction direction of the clamping piece.

6. The tube end clamping device of a tube bender according to claim 1, wherein said fixture is a holding plate.

7. The tube end clamping device of the bending machine according to claim 6, wherein the push-pull mechanism is fixed to the fixing plate.

Images