Clamping device for bending pipe fitting

Abstract

The utility model discloses a clamping device for pipe fitting bending processing, and relates to the technical field of pipe fitting processing equipment, the clamping device comprises a driving base, at least two pipe supporting movable cores and a driving insertion core, the pipe supporting movable cores and the driving insertion core move on the driving base in the radial direction, all the pipe supporting movable cores are combined to form a columnar structure, and the driving insertion core is inserted into the driving base. The diameter of the maximum outer contour of the columnar structure is changed through the radial movement of the stay tube movable core on the driving base; wherein the columnar structure is internally provided with a conical channel formed by combining the stay tube movable cores, so that the driving insertion core can be inserted into the conical channel to enlarge the maximum outer contour diameter of the columnar structure; the columnar structure is sleeved with an elastic reset ring so as to drive the supporting pipe movable cores to gather together. The pipe fitting bending clamping device can be suitable for bending clamping of pipe fittings with various pipe diameters, and the pipe fittings can be prevented from sliding in the bending process.

Description

TECHNICAL FIELD

[0001] The utility model relates to pipe fitting processing equipment technical field especially, it is a kind of clamping device for pipe fitting bending processing. BACKGROUND

[0002] According to the use of pipe fitting, the processing of pipe fitting has different processing procedures, such as the bending processing procedure of pipe fitting, the existing bending equipment is generally inserted into the two ends of pipe fitting by two pipe insertion cores, then one of them is driven to rotate relative to the other pipe insertion core, so as to bend the pipe fitting.

[0003] Therefore, in order to facilitate the insertion of pipe insertion core into pipe fitting, the diameter of pipe insertion core is generally smaller than the diameter of pipe fitting by 0.5mm-1mm, so that in the process of bending, the pipe insertion core slides relative to the inner wall of pipe fitting, so that the preset bending stress point of pipe insertion core changes, and the bending degree of pipe fitting changes, which cannot guarantee the uniformity of pipe fitting processing, and even affects the subsequent use requirements. On the other hand, based on the size of pipe insertion core, the corresponding replacement needs to be made according to the size of pipe fitting, so that the corresponding equipment needs to replace the corresponding pipe insertion core when bending processing pipe fittings of different sizes, thereby reducing production efficiency, especially for enterprises with loose production requirements, it is easy to use relatively too small pipe insertion core to replace pipe fitting in order to save replacement steps, thereby reducing the quality of pipe fitting. SUMMARY

[0004] The technical problem to be solved by the embodiment of the utility model is to provide a clamping device for pipe bending processing, which can adapt to the bending clamping of pipe fittings of various diameters, and can avoid the sliding of pipe fitting during bending processing.

[0005] In order to solve the above technical problems, the utility model embodiment provides a clamping device for pipe bending processing, which comprises a driving base, a pipe supporting movable core radially movable on the driving base and a driving insertion core, the pipe supporting movable core is at least provided with two, and all the pipe supporting movable cores are combined to form a columnar structure, so as to change the maximum outer contour diameter of the columnar structure by the radial movement of the pipe supporting movable core on the driving base.

[0006] Among them, the columnar structure is provided with a tapered channel formed by the combination of each pipe supporting movable core, so as to insert the driving insertion core to expand the maximum outer contour diameter of the columnar structure.

[0007] The columnar structure is provided with an elastic reset ring, so as to drive each pipe supporting movable core to gather.

[0008] As an improvement of the above-mentioned scheme, the driving base comprises a base chassis and slide rails for mounting the support pipe movable core, the support pipe movable core is provided with a sliding groove opening matched with the slide rails to move along the corresponding slide rails.

[0009] As an improvement of the above-mentioned scheme, the base chassis is provided with a socket corresponding to the tapered channel, and the driving plug is inserted into the tapered channel through the socket.

[0010] As an improvement of the above-mentioned scheme, the two side walls of the slide rails are concave to form limiting grooves, and the sliding groove opening is provided with a protruding part matched with the limiting grooves to limit the support pipe movable core from being axially separated from the slide rails relative to the columnar mechanism.

[0011] As an improvement of the above-mentioned scheme, the outer side wall of the support pipe movable core is provided with an arc-shaped groove matched with the elastic reset ring, so that the arc-shaped grooves of the support pipe movable cores are combined to form an annular groove for mounting the elastic reset ring.

[0012] As an improvement of the above-mentioned scheme, the elastic reset ring is a rubber ring or a spring ring.

[0013] As an improvement of the above-mentioned scheme, the support pipe movable core comprises an insertion part inserted into a pipe and a mounting part, the surface of the mounting part is divided into a core body area and a positioning area for limiting the insertion depth, and the insertion part is arranged at the core body area.

[0014] As an improvement of the above-mentioned scheme, the arc-shaped groove is arranged at the side wall of the mounting part.

[0015] As an improvement of the above-mentioned scheme, the driving plug comprises a tapered head matched with the tapered channel and a driving column for connecting a driving mechanism, and the tapered head is arranged at one end surface of the driving column.

[0016] As an improvement of the above-mentioned scheme, the driving column is provided with a limiting part larger than the socket to limit the maximum stroke of the tapered head inserted into the tapered channel.

[0017] The utility model has the advantages that:

[0018] The utility model discloses an embodiment of a kind of clamping devices, including driving base, brace pipe movable core and driving insert core, brace pipe movable core is equipped with at least 2, all brace pipe movable core combination forms columnar structure, to change the maximum outer contour diameter of columnar structure by the radial activity of brace pipe movable core on driving base, the taper channel formed by the combination of each brace pipe movable core is equipped in columnar structure.

[0019] Correspondingly, the columnar structure is provided with an elastic reset ring, so that after the pipe is bent, the driving insert core leaves the taper channel, and under the contraction of the elastic reset ring, each brace pipe movable core is driven to gather, so that the pipe can be removed from the columnar structure for subsequent processing. BRIEF DESCRIPTION OF DRAWINGS

[0020] Figure 1 is a structural diagram of the combination of each brace pipe movable core of the utility model;

[0021] Figure 2 is a structural diagram of the driving base of the utility model;

[0022] Figure 3 is a structural diagram of the driving base and the driving insert core of the utility model. DETAILED DESCRIPTION

[0023] In order to make the purpose, technical scheme and advantages of the utility model clearer, the utility model will be further described in detail below with reference to the drawings.

[0024] Referring to Figures 1, 2 and 3, the utility model embodiment provides a clamping device, including driving base 1, brace pipe movable core 2 radially active on the driving base 1 and driving insert core 3, brace pipe movable core 2 is equipped with at least 2, all brace pipe movable core 2 combination forms columnar structure, to change the maximum outer contour diameter of columnar structure by the radial activity of brace pipe movable core 2 on driving base 1;

[0025] Among them, the taper channel 2c formed by the combination of each brace pipe movable core 2 is equipped in columnar structure, for the driving insert core 3 insertion to expand the maximum outer contour diameter of columnar structure;

[0026] The columnar structure is provided with an elastic reset ring 4 to drive each brace pipe movable core 2 to gather.

[0027] Specifically, the driving base 1 comprises a base chassis 11 and slide rails 12 for mounting the support tube movable core 2, the support tube movable core 2 is provided with a sliding slot 2a matched with the slide rails 12 to move along the corresponding slide rails 12. The columnar structure is preferably a cylinder or a rotating body with a circular outer contour.

[0028] The base chassis 11 is provided with a socket 111 corresponding to the tapered channel 2c, and the driving plug 3 is inserted into the tapered channel 2c through the socket 111.

[0029] Further, the two side walls of the slide rail 12 are concave to form a limiting groove 121, and the sliding slot 2a is provided with a protruding part 21a matched with the limiting groove 121, so that the protruding part 21a is buckled into the limiting groove 121 to limit the axial disengagement of the support tube movable core 2 from the slide rail 12 relative to the columnar mechanism.

[0030] In order to stabilize the working position of the elastic reset ring 4, the outer side wall of the support tube movable core 2 is provided with an arc-shaped groove matched with the elastic reset ring 4, so that the arc-shaped grooves 2b of each support tube movable core 2 are combined to form an annular groove for mounting the elastic reset ring 4, thereby limiting the disengagement of the elastic reset ring 4 from the support tube movable core 2. Preferably, the elastic reset ring 4 is a rubber ring or a spring ring.

[0031] The support tube movable core 2 comprises an insertion part 21 for insertion into a pipe and a mounting part 22, the surface of the mounting part 22 is divided into a core body area and a positioning area 22a for limiting the insertion depth, and the insertion part 21 is arranged at the core body area.

[0032] The insertion part 21 is a sector-shaped cylinder. The positioning area 22a is preferably sector-shaped and located outside the core body area. Thus, the positioning areas of other support tube movable cores 2 can be combined to form an annular area, and a contact surface for contacting the port of the pipe can be formed.

[0033] Correspondingly, the arc-shaped groove 2b is arranged at the side wall of the mounting part 22 to avoid interference of the elastic reset ring 4 with the normal work of the insertion part 21.

[0034] Preferably, the driving plug 3 comprises a tapered head 31 matched with the tapered channel 2c and a driving column 32 for connecting a driving mechanism, the tapered head 31 is arranged at one end surface of the driving column 32, and the other end of the driving column 32 can be used to connect a telescopic driving mechanism, such as a pneumatic telescopic rod mechanism, an electric push rod, etc.

[0035] In order to avoid the support pipe movable core 2 to move outward excessively, especially to avoid the support pipe movable core 2 to be separated from the slide rail 12, the driving column 32 is provided with a limiting part which is larger than the insertion hole 111 to limit the maximum stroke of the tapered head inserted into the tapered channel 2c, thereby the maximum profile diameter of the columnar structure can be controlled. The limiting part can be a limiting ring with a diameter larger than the insertion hole, and more preferably, the diameter of the driving column can be increased so that the end diameter of the driving column is larger than the insertion hole.

[0036] Preferably, a cylindrical section 33 with a diameter smaller than the insertion hole is further connected between the tapered head 31 and the driving column 32, and the cross-sectional diameter of the cylindrical section 33 is the same as the maximum diameter of the tapered head 31.

[0037] The above is the preferred embodiment of the present application, and it should be pointed out that for ordinary skilled in the art, without departing from the principles of the present application, a number of improvements and refinements can be made, and these improvements and refinements are also considered to be within the scope of the present application.

Claims

1. A clamping device for bending pipe fittings, characterized in that, It includes a drive base, a radially movable support tube core on the drive base, and a drive insert core. There are at least two support tube cores. All the support tube cores are combined to form a columnar structure so that the maximum outer diameter of the columnar structure can be changed by the radial movement of the support tube cores on the drive base. The columnar structure is provided with a conical channel formed by the combination of the movable cores of each support tube, so as to allow the drive insert to be inserted to expand the maximum outer diameter of the columnar structure. The columnar structure is fitted with an elastic reset ring to drive the movable cores of each support tube to converge.

2. The clamping device as described in claim 1, characterized in that, The drive base includes a base chassis and a slide rail for mounting the movable support tube core. The movable support tube core is provided with a sliding groove adapted to the slide rail to move along the corresponding slide rail.

3. The clamping device as described in claim 2, characterized in that, The base chassis is provided with a socket corresponding to the conical channel, and the drive insert passes through the socket and is inserted into the conical channel.

4. The clamping device as described in claim 2, characterized in that, The two side walls of the slide rail are recessed to form a limiting groove, and the opening of the slide groove is provided with a protrusion that matches the limiting groove, so as to restrict the axial disengagement of the movable core of the support tube relative to the columnar mechanism from the slide rail.

5. The clamping device as described in claim 4, characterized in that, The outer wall of the movable core of the support tube is provided with an arc-shaped groove that is adapted to the elastic reset ring, so that the arc-shaped grooves of each movable core of the support tube are combined to form an annular groove for installing the elastic reset ring.

6. The clamping device as described in claim 1, characterized in that, The elastic reset ring is a rubber ring or a spring ring.

7. The clamping device as described in claim 5, characterized in that, The movable core of the tube support includes an insertion part and an installation part for insertion into the tube. The surface of the installation part is divided into a core area and a positioning area for limiting the insertion depth. The insertion part is located in the core area.

8. The clamping device as described in claim 7, characterized in that, The arc-shaped groove is located on the side wall of the mounting part.

9. The clamping device as described in claim 3, characterized in that, The drive insert includes a tapered head adapted to the tapered channel and a drive post for connecting the drive mechanism, wherein the tapered head is located at one end face of the drive post.

10. The clamping device as described in claim 9, characterized in that, The drive column is provided with a limiting part, which is larger than the insertion hole, so as to limit the maximum stroke of the conical head inserted into the conical channel.

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