Clamping assembly for bent pipe machining

Abstract

The utility model relates to the technical field of bent pipe machining, in particular to a clamping assembly for bent pipe machining, which comprises two mounting seats oppositely arranged on a bent pipe table, chucks positioned on one sides of the mounting seats, and connecting parts arranged between the chucks and the mounting seats, the connecting part comprises a connecting block fixedly arranged on the chuck, and the connecting block is connected with a mounting groove formed in the mounting base in an inserted mode. The connecting block on the chuck is transversely and completely inserted into the mounting groove from outside to inside, the abutting block can be jacked into the covered groove, then the chuck is pushed in the axial direction of the chuck, the limiting block is completely wrapped by the inserting groove in the connecting block, at the moment, the connecting block and the abutting block are completely staggered, and the abutting block is reset under pushing of the elastic force of the compression spring. When the clamping head is disassembled, the abutting block is pushed into the covered groove, then the clamping head is pushed opposite to the step, and then the clamping head can be simply and efficiently assembled or disassembled.

Description

TECHNICAL FIELD

[0001] The utility model relates to the technical field of pipe bending processing, especially to a clamping assembly for pipe bending processing. BACKGROUND

[0002] Metal pipe needs to be fixed before bending to avoid position moving or rotating of the metal pipe in the bending process, which affects the bending pipe processing precision and quality. The existing clamping piece adopts a clamp head with the same radius as the pipe fitting to clamp the pipe fitting to complete the fixing of the pipe fitting. However, the clamp head is mostly fixed on the clamp by bolts. When the pipe fitting specification is changed, the clamp head also needs to be changed synchronously. The clamp head needs to be replaced by disassembling the bolts. When the new clamp head is installed, the positions of the two clamp heads also need to be calibrated, which makes the clamp head replacement operation time-consuming and the replacement efficiency relatively low.

[0003] To solve the above technical problems, the existing patent application No. 202420492296.2 discloses a pipe bending clamping piece. The device pushes the pressing plate to slide by rotating the locking bolt, so that the pressing plate can slide up and down. When the pressing plate slides down and contacts the clamp head, the clamp head can be limited and fixed in the sliding groove. By reversing the locking bolt to drive the pressing plate to slide, the fixation of the clamp head can be released. The clamp head can be taken out and replaced with the required specification clamp head. In the above prior art, the protrusions on one side of the clamp head are inserted horizontally into the sliding groove. When the two clamp heads are installed, the ends of the two clamp heads need to be adjusted to be flush to prevent misalignment and affect the quality of the bent pipe. The operation process is relatively complicated. UTILITY MODEL CONTENTS

[0004] Therefore, the utility model aims to provide a clamping assembly for pipe bending processing to solve the problem that the operation of adjusting the ends of the two clamp heads to be flush is relatively complicated.

[0005] To achieve the above purpose, the utility model provides a clamping assembly for pipe bending processing, which comprises two mounting seats oppositely arranged on a pipe bending table and a clamp head arranged on one side of the mounting seat.

[0006] A connecting part is arranged between the clamp head and the mounting seat. The connecting part comprises a connecting block fixedly arranged on the clamp head, and the connecting block is inserted into a mounting groove arranged on the mounting seat.

[0007] A blocking piece is arranged between the connecting block and the mounting groove, and a limiting piece is arranged in the mounting groove. The limiting piece and the blocking piece are matched. When the connecting block is completely inserted into the mounting groove from the outside to the inside, and the connecting block is pushed to approach and abut against the blocking piece along the axial direction of the clamp head, the limiting piece resets and limits and fixes the connecting block between the limiting piece and the blocking piece.

[0008] A driving member for driving the two mounting seats to move towards or away from each other.

[0009] Preferably, the limiting member comprises a hidden groove arranged in the mounting groove and a through hole penetrating the vertical surface of the hidden groove away from the mounting groove, a guide rod is transversely inserted in the through hole, a stopper is slidingly arranged in the hidden groove, one end of the guide rod is fixedly arranged on the stopper, and a compression spring is arranged between the stopper and the through hole.

[0010] Preferably, the two ends of the compression spring are fixedly arranged on the stopper and the vertical surface of the hidden groove away from the mounting groove respectively, and the compression spring is slidingly sleeved on the outside of the guide rod.

[0011] Preferably, the blocking member comprises a limiting block fixedly arranged on the vertical surface of the mounting groove away from the hidden groove, and the connecting block is provided with a slot, the slot is located at the connecting block and the chuck connection, and the slot is matched with the limiting block and used for limiting the freedom degree of the connecting block except the axial direction of the chuck.

[0012] Preferably, the thickness of the stopper and the limiting block in the axial direction of the chuck is the same, when the limiting block is completely inserted in the slot, the stopper and the connecting block are completely staggered in the axial direction of the chuck, the stopper is inserted between the vertical surface of the mounting groove away from the limiting block and the connecting block under the elastic pushing of the compression spring, and the connecting block is clamped and fixed between the stopper and the limiting block.

[0013] Preferably, the clamping assembly further comprises a guide clamping part arranged on the pipe bending table, the guide clamping part is centrally aligned between the two chucks in the axial direction of the chuck, and the guide clamping part is used for assisting clamping the pipe and making the pipe pass through the two chucks.

[0014] Preferably, the guide clamping part comprises a groove arranged on the top of the pipe bending table and at least two concave rollers arranged in the groove in parallel.

[0015] Four elastic supporting members are circumferentially arranged on the top of the pipe bending table, and the elastic supporting members are close to the corners of the groove.

[0016] A support plate is fixedly arranged between the tops of the four elastic supporting members, and at least two concave rollers are also arranged in parallel on the bottom of the support plate in the vertical direction.

[0017] Preferably, the elastic supporting member comprises a sleeve fixedly arranged on the top of the pipe bending table and a vertical rod fixedly arranged on the bottom of the support plate, and the bottom end of the vertical rod is slidingly sleeved in the inside of the sleeve.

[0018] A tension spring is arranged between the top of the pipe bending table and the bottom of the support plate, the tension spring is sleeved on the outside of the sleeve, and the two ends of the tension spring are fixedly arranged on the pipe bending table and the support plate respectively.

[0019] The utility model discloses a beneficial effect:

[0020] The utility model discloses a beneficial effect: BRIEF DESCRIPTION OF DRAWINGS

[0021] In order to more clearly illustrate the technical scheme in the utility model or the prior art, the following will be to the embodiment or the prior art description needed to use the drawing briefly introduces, obviously, the following description in the drawing is only the utility model, for the ordinary skilled person in the art comes, under the premise of not paying the creative labor, can also obtain other drawings according to these drawings.

[0022] Figure 1 For the three-dimensional schematic of the utility model Figure 1 ;

[0023] Figure 2 For the three-dimensional schematic of the utility model Figure 2 ;

[0024] Figure 3 For the three-dimensional schematic of the utility model Figure 3 ;

[0025] Figure 4 For the three-dimensional schematic of the utility model Figure 4 ;

[0026] Figure 5 For the three-dimensional schematic of the utility model Figure 5 .

[0027] Marked as in the drawing:

[0028] 1, mounting seat, 2, chuck, 3, connecting portion, 31, installation groove, 32, connecting block, 33, limiting piece, 331, blind groove, 332, perforation, 333, guide rod, 334, resist block, 335, compression spring, 34, blocking piece, 341, limiting block, 342, insertion slot, 4, driving piece, 5, guide clamping portion, 51, elastic support, 52, support plate, 53, recess, 54, concave roller. DETAILED DESCRIPTION

[0029] In order to make the purpose, technical scheme and advantages of the utility model more clearly, the following will be further explained in detail in combination with specific embodiments.

[0030] It should be noted that, unless otherwise defined, the technical terms or scientific terms used in the utility model should be understood as the usual meaning by those skilled in the art to which the utility model belongs. The "first", "second" and similar words used in the utility model do not represent any order, quantity or importance, but are only used to distinguish different components. "Include" or "contain" and similar words mean that the elements or objects before the word cover the elements or objects listed after the word and their equivalents, and do not exclude other elements or objects. "Connection" or "connected" and similar words are not limited to physical or mechanical connection, but can include electrical connection, whether direct or indirect. "Up", "down", "left", "right" and the like are only used to represent the relative positional relationship, when the absolute position of the described object changes, the relative positional relationship may also change accordingly.

[0031] As shown in Figures 1 to 5 A clamping assembly for pipe bending machining, comprising two mounting seats 1 oppositely arranged on a pipe bending table and a chuck 2 located at one side of the mounting seat 1, the opposite surfaces of the two chucks 2 are concave semicircular surfaces, and the axis of the semicircular surface is in the same direction as the axis of the chuck 2, and the clamping assembly further comprises:

[0032] A connecting part 3 arranged between the chuck 2 and the mounting seat 1, the connecting part 3 comprises a connecting block 32 fixedly arranged on the chuck 2, the connecting block 32 is inserted with a mounting groove 31 arranged on the mounting seat 1, and the two mounting grooves 31 are respectively located on the opposite surfaces of the two mounting seats 1.

[0033] A blocking piece 34 arranged between the connecting block 32 and the mounting groove 31 and a limiting piece 33 arranged in the mounting groove 31, the limiting piece 33 and the blocking piece 34 are matched, after the connecting block 32 is completely inserted into the mounting groove 31 from the outside to the inside, the connecting block 32 is pushed along the axial direction of the chuck 2 to approach and abut against the blocking piece 34, the limiting piece 33 resets and limits and fixes the connecting block 32 between it and the blocking piece 34.

[0034] The driving member 4 is used to drive the two mounting seats 1 to move close to or away from each other, and the driving member 4 comprises threaded holes arranged on the mounting seats 1 and a guide groove arranged on the top of the elbow bench, a bidirectional screw rod is arranged in the guide groove in a rotating manner, the screw thread directions on the two ends of the bidirectional screw rod are opposite, the screw thread directions of the threaded holes on the two mounting seats 1 are consistent with the screw thread directions of the two ends of the bidirectional screw rod respectively, the two ends of the bidirectional screw rod are sleeved in the two threaded holes respectively, a driving motor is arranged for driving the bidirectional screw rod to rotate, and the driving motor is controlled to change the rotating direction of the output end, so that the rotating direction of the bidirectional screw rod is changed, and the two mounting seats 1 are synchronously moved close to or away from each other, so that the distance between the two clamping heads 2 is adjusted.

[0035] When the clamping head 2 needs to be replaced or the pipe is clamped, the driving member 4 is controlled to drive the two mounting seats 1 and the two clamping heads 2 to synchronously move away from or close to each other, so that the distance between the two clamping heads 2 is increased, sufficient space is reserved when the outer diameter of the pipe to be bent is changed, the old clamping head 2 of the old size is conveniently disassembled, and then the clamping head 2 of the new size is installed, or the distance between the two clamping heads 2 is slightly increased before the pipe is clamped and fixed, so that the pipe can pass through the two clamping heads 2, the length of the pipe passing through is adjusted before the pipe is clamped and fixed, and then the pipe is clamped and fixed, and the pipe can be accurately bent subsequently.

[0036] As shown in Figure 3 and Figure 5 , the limiting member 33 comprises a hidden groove 331 arranged in the mounting groove 31 and a through hole 332 penetrating through the vertical surface of the hidden groove 331 away from the mounting groove 31, the hidden groove 331 is located on the vertical surface of the mounting groove 31 opposite to the clamping head 2, one of the vertical surfaces inside the hidden groove 331 is flush with the vertical surface adjacent to it in the mounting groove 31, and this vertical surface is located between the clamping head 2 and the hidden groove 331, the through hole 332 is located on the vertical surface of the hidden groove 331 opposite to the mounting groove 31, a guide rod 333 is transversely inserted in the through hole 332, a stop block 334 is slidably arranged in the hidden groove 331, one end of the guide rod 333 is fixedly arranged on the stop block 334, and a compression spring 335 is arranged between the stop block 334 and the through hole 332.

[0037] The two ends of the compression spring 335 are fixedly arranged on the stop block 334 and the vertical surface of the hidden groove 331 away from the mounting groove 31 respectively, and the compression spring 335 is slidably sleeved outside the guide rod 333.

[0038] The connecting block 32 can push the abutting block 334 into the hidden groove 331 during the process of being inserted into the installation groove 31 from outside to inside in the transverse direction, until the vertical surface of the connecting block 32 away from the collet 2 is in contact with the inner vertical surface of the installation groove 31 which is flush with the opening of the hidden groove 331, the connecting block 32 is completely inserted into the installation groove 31, during which the abutting block 334 synchronously pushes the guide rod 333 to move, and the compression spring 335 is elastically deformed (i.e. shortened) and accumulates elastic force under the extrusion force.

[0039] As shown in Figure 3 and Figure 4 , the blocking piece 34 includes a limiting block 341 fixed on the vertical surface of the installation groove 31 away from the hidden groove 331, the vertical surface of the mounting seat 1 opposite to the collet 2 is flush with one of the vertical surfaces of the limiting block 341, and the limiting block 341 is located on the vertical surface of the installation groove 31 adjacent to the collet 2, at the same time, the limiting block 341 and the abutting block 334 in the initial state are oppositely distributed in the installation groove 31, and the hidden groove 331 is located on the vertical surface of the installation groove 31 opposite to the collet 2, the connecting block 32 is provided with a slot 342, the slot 342 is located at the connecting position of the connecting block 32 and the collet 2, and the slot 342 is matched with the limiting block 341 and used for limiting the freedom degree of the connecting block 32 except the axial direction of the collet 2.

[0040] The thickness of the abutting block 334 and the limiting block 341 in the axial direction of the collet 2 is the same, during the installation of the collet 2, the connecting block 32 is completely inserted into the installation groove 31 from the horizontal direction perpendicular to the axial direction of the collet 2, during which the connecting block 32 contacts the abutting block 334 and pushes the abutting block 334 to move into the hidden groove 331, until the abutting block 334 is completely retracted into the hidden groove 331, the connecting block 32 is in contact with the vertical surface of the installation groove 31 opposite to the collet 2, then the collet 2 and the connecting block 32 are pushed in the axial direction of the collet 2, so that the slot 342 on the connecting block 32 is close to the limiting block 341, when the limiting block 341 is completely inserted into the slot 342, the positions of the abutting block 334 and the connecting block 32 in the axial direction of the collet 2 are completely overlapped, the abutting block 334 is inserted between the vertical surface of the installation groove 31 away from the limiting block 341 and the connecting block 32 under the elastic force of the compression spring 335, so that the connecting block 32 is clamped and fixed between the abutting block 334 and the limiting block 341.

[0041] As shown in Figure 1 and Figure 2 , the clamping assembly further includes a guide clamping part 5 provided on the bending table, the guide clamping part 5 is centrally aligned between the two collets 2 in the axial direction of the collet 2, and the guide clamping part 5 is used for assisting in clamping the pipe and making the pipe pass through between the two collets 2.

[0042] The guiding and clamping part 5 comprises a groove 53 arranged on the top of the pipe bending table and at least two concave rollers 54 arranged in parallel and rotatably in the groove 53, and the outer part of the concave roller 54 is a concave curve.

[0043] Four elastic supporting parts 51 are arranged on the top of the pipe bending table in a circumferential direction, and the elastic supporting parts 51 are arranged near the corners of the groove 53.

[0044] A supporting plate 52 is fixedly arranged between the top parts of the four elastic supporting parts 51, and the bottom part of the supporting plate 52 is also arranged with at least two concave rollers 54 in parallel and rotatably, and the concave rollers 54 are distributed in a vertical direction.

[0045] The elastic supporting part 51 comprises a sleeve fixedly arranged on the top of the pipe bending table and a vertical rod fixedly arranged on the bottom part of the supporting plate 52, and the bottom end of the vertical rod is sleeved in the inner part of the sleeve.

[0046] A tension spring is arranged between the top of the pipe bending table and the bottom part of the supporting plate 52, the tension spring is sleeved on the outer part of the sleeve, and the two ends of the tension spring are fixedly arranged on the pipe bending table and the supporting plate 52 respectively.

[0047] When the pipe is transversely inserted between the concave rollers 54 on the bottom part of the supporting plate 52 and the concave rollers 54 in the groove 53, the pipe can be automatically centered in the axial direction of the chuck 2 between the two chucks 2 under the combined action of the elastic force of the elastic supporting part 51 and the concave curve on the outer part of the concave roller 54, so as to realize the automatic positioning effect of the pipe between the two chucks 2, then the length of the pipe passing through the two chucks 2 is adjusted, finally the driving part 4 is controlled to drive the two mounting seats 1 and the two chucks 2 to approach each other, so as to fix the pipe before bending.

[0048] Working principle: when installing the chuck 2, first, the connecting block 32 is completely inserted into the installation groove 31 from the vertical direction perpendicular to the axial direction of the chuck 2, in the process, the connecting block 32 contacts the abutting block 334 and pushes the abutting block 334 to move into the hidden groove 331, until the abutting block 334 is completely retracted into the hidden groove 331, the connecting block 32 abuts on the vertical surface opposite to the chuck 2 in the installation groove 31, then the chuck 2 and the connecting block 32 are pushed along the axial direction of the chuck 2, so that the insertion slot 342 on the connecting block 32 is close to the limiting block 341, when the limiting block 341 is completely inserted into the insertion slot 342, the position of the abutting block 334 and the connecting block 32 is completely staggered in the axial direction of the chuck 2, the abutting block 334 is inserted into the installation groove 31 under the elastic force of the compression spring 335, away from the limiting block 341 and adjacent to the vertical surface of the chuck 2 and the connecting block 32, so that the connecting block 32 is clamped and fixed between the abutting block 334 and the limiting block 341, so the installation of the chuck 2 is completed, when the chuck 2 needs to be replaced, the abutting block 334 is pushed into the hidden groove 331, then the chuck 2 and the connecting block 32 are pushed away from the limiting block 341 and close to the hidden groove 331 along the axial direction of the chuck 2, until the limiting block 341 is completely separated from the insertion slot 342, then the connecting block 32 is transversely pulled out of the installation groove 31, the operation is simple and efficient, and when the pipe is loaded, the pipe is first transversely inserted between the concave rollers 54 at the bottom of the supporting plate 52 and the concave rollers 54 in the groove 53, so that the pipe is automatically centered between the two chucks 2 in the axial direction of the chuck 2 under the combined action of the elastic force of the elastic supporting piece 51 and the concave curve outside the concave roller 54, the automatic positioning effect of the pipe between the two chucks 2 is realized, then the length of the pipe passing between the two chucks 2 is adjusted, finally the driving piece 4 is controlled to drive the two mounting seats 1 and the two chucks 2 to approach each other, so that the pipe can be fixed before bending.

[0049] Those skilled in the art will understand that the above discussion of any embodiment is only exemplary and is not intended to limit the scope of the present application (including claims) to these examples; under the idea of the present application, the above embodiments or technical features in different embodiments can also be combined, the steps can be implemented in any order, and there are many other changes of different aspects of the present application as described above, which are not provided in details for the sake of brevity.

[0050] The present application is intended to cover all such alternatives, modifications, and variations as fall within the broad scope of the appended claims. Accordingly, any and all such alternatives, modifications, equivalents, improvements and the like are intended to be encompassed by the present application.

Claims

1. A clamping assembly for bending pipe, comprising two mounting seats (1) arranged oppositely on a bending pipe table and a chuck (2) arranged on one side of the mounting seat (1), characterized in that, The clamping assembly further comprises: A connecting part (3) arranged between the collet (2) and the mounting base (1), the connecting part (3) comprising a connecting block (32) fixedly arranged on the collet (2), and the connecting block (32) being inserted into a mounting groove (31) arranged on the mounting base (1); A stopper (34) arranged between the connecting block (32) and the mounting groove (31), and a limiting part (33) arranged in the mounting groove (31), the limiting part (33) and the stopper (34) being matched, when the connecting block (32) is completely inserted into the mounting groove (31) from outside to inside, and the connecting block (32) is pushed along the axial direction of the collet (2) to abut against the stopper (34), the limiting part (33) is reset and limits the connecting block (32) to be fixed between the limiting part (33) and the stopper (34). A driving part (4) for driving the two mounting bases (1) to move towards or away from each other.

2. The clamp assembly for pipe bending operations as defined in claim 1, wherein, The limiting part (33) comprises a dark groove (331) arranged in the mounting groove (31), and a through hole (332) penetrating the vertical surface of the dark groove (331) away from the mounting groove (31), a guide rod (333) being transversely inserted into the through hole (332), a stop block (334) being slidingly arranged in the dark groove (331), one end of the guide rod (333) being fixedly arranged on the stop block (334), and a compression spring (335) being arranged between the stop block (334) and the through hole (332).

3. The clamp assembly for pipe bending operations as defined in claim 2, wherein, Both ends of the compression spring (335) are fixedly arranged on the stop block (334) and the vertical surface of the dark groove (331) away from the mounting groove (31), and the compression spring (335) is slidingly sleeved on the outside of the guide rod (333).

4. The clamp assembly for pipe bending operations as defined in claim 3, wherein, The stopper (34) comprises a limiting block (341) fixedly arranged on the vertical surface of the mounting groove (31) away from the dark groove (331), and the connecting block (32) is provided with a slot (342), the slot (342) being located at the connecting position of the connecting block (32) and the collet (2), and the slot (342) being matched with the limiting block (341) and being used for limiting the freedom degree of the connecting block (32) except the axial direction of the collet (2).

5. The clamp assembly for pipe bending operations as defined in claim 4, wherein, The thickness of the stop block (334) and the limiting block (341) in the axial direction of the collet (2) is the same, when the limiting block (341) is completely inserted into the slot (342), the stop block (334) is completely misaligned with the connecting block (32) in the axial direction of the collet (2), the stop block (334) is inserted between the vertical surface of the mounting groove (31) away from the limiting block (341) and the connecting block (32) under the elastic force of the compression spring (335), so that the connecting block (32) is clamped and fixed between the stop block (334) and the limiting block (341).

6. The clamp assembly for pipe bending operations of claim 1, wherein, The clamping assembly further comprises a guide clamping part (5) arranged on the pipe bending table, the guide clamping part (5) being centrally aligned between the two collets (2) in the axial direction of the collet (2), and the guide clamping part (5) being used for assisting in clamping the pipe and making the pipe pass through between the two collets (2).

7. The clamp assembly of claim 6, wherein, The guiding and clamping part (5) comprises a groove (53) arranged on the top of the bending table and at least two concave rollers (54) arranged in parallel and rotatably in the groove (53); Four elastic supporting members (51) are arranged on the top of the bending table in the circumferential direction, and the elastic supporting members (51) are arranged near the corners of the groove (53); A supporting plate (52) is fixedly arranged between the tops of the four elastic supporting members (51), and the bottom of the supporting plate (52) is also arranged with at least two concave rollers (54) in parallel and rotatably, and the concave rollers (54) are oppositely distributed in the vertical direction.

8. The clamp assembly for pipe bending operations as defined in claim 7, wherein, The elastic supporting member (51) comprises a sleeve fixedly arranged on the top of the bending table and a vertical rod fixedly arranged on the bottom of the supporting plate (52), and the bottom end of the vertical rod is slidably sleeved in the sleeve; A tension spring is arranged between the top of the bending table and the bottom of the supporting plate (52), the tension spring is sleeved outside the sleeve, and the two ends of the tension spring are fixedly arranged on the bending table and the supporting plate (52) respectively.

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