Full-stroke chuck of pipe cutting machine

Abstract

The utility model discloses a full-stroke chuck of a pipe cutting machine, which relates to the technical field of pipe body cutting auxiliary equipment and comprises a base, a clamping jaw, a sliding block, a transmission mechanism and a driving cylinder. The transmission mechanism comprises a first rack, a second rack, a first gear in meshed connection with the first rack, a second gear in meshed connection with the second rack and a third gear in meshed connection with the second gear, the first gear and the third gear are both in transmission connection with an output shaft of the driving air cylinder, and the first rack and the second rack are oppositely arranged on the two sides of the sliding block; and after the first gear is disengaged from the first rack, the second gear is in engaged transmission with the second rack. According to the full-stroke chuck of the pipe cutting machine, the racks are arranged on the two sides of the sliding block, so that the sliding block can be driven to move from the two sides of the sliding block, the structural form of a transmission mechanism is simplified, the structural stability of the chuck is improved, and the chuck is convenient to maintain.

Description

TECHNICAL FIELD

[0001] The utility model relates to pipe body cutting auxiliary equipment technical field especially relates to a full stroke chuck of pipe cutting machine. BACKGROUND

[0002] The chuck structure on the pipe cutting machine is mainly used for clamping pipe fittings, so that the pipe cutting machine cuts and processes the pipe body.

[0003] At present, in order to meet the pipe fitting clamping demand of different size specifications (such as the diameter size of round pipe, the width and height size of square pipe and the like), and avoid the defect that the rack is driven to extend into the pipe fitting cutting processing area by the gear, the prior art discloses a full stroke pneumatic chuck of pipe material laser cutting machine, which has four circumferentially distributed clamping claws and a driving mechanism for driving the clamping claws to move radially synchronously, the driving mechanism comprises a transmission gear and a cylinder, the cylinder pushes the transmission gear to rotate, the transmission gear meshes with a driven gear, a first gear meshing with the rack is coaxially arranged with the driven gear, a double gear is arranged, the rear gear of the double gear meshes with the first gear, the front gear of the double gear meshes with a second gear, after the first gear is disengaged from the meshing with the rack, the second gear meshes with the rack to drive, the first gear is first meshed with the rack to drive, and then the second gear continues to mesh with the rack, synchronous radial movement of the clamping claw is realized to clamp the pipe fitting, the force transmission mode does not need to arrange the rack on the whole length of the side of the sliding block, the length of the rack can be further shortened, so that the rack is always outside the pipe fitting processing area when clamping the pipe fitting, and damage of the rack due to cutting is prevented.

[0004] However, the device still has the following defects:

[0005] 1、The first gear has the function of driving the second gear to rotate in addition to the function of driving the rack to move, so that the whole gear transmission structure cannot work normally only when the first gear fails.

[0006] 2、The whole set of gear transmission structure is arranged on one side of the sliding block where the clamping claw is located, so that the structure on one side of the sliding block is crowded, and the maintenance of the chuck is not facilitated.

[0007] 3、In the process that power is transmitted from the first gear to the double gear, from the double gear to the second gear and from the second gear to the rack, the power is attenuated (transmission loss) three times, which can cause the clamping force of the clamping claw to be weakened, cause the clamping force of the clamping claw to be insufficient, and although the strengthening of the gear structure strength can ensure the clamping force of the clamping claw, the manufacturing cost of the chuck is increased. INVENTION CONTENTS

[0008] The utility model provides a full stroke chuck of pipe cutting machine, toothed racks are arranged on both sides of the sliding block, so that the sliding block can be driven from both sides to simplify the transmission mechanism structure and increase the stability of the chuck structure, so as to facilitate the maintenance of the chuck, so as to solve at least one of the above technical problems.

[0009] The utility model provides a full stroke chuck of pipe cutting machine, the chuck includes base, clamping jaw, sliding block, transmission mechanism, drive cylinder, the middle part of base is equipped with through -hole, four clamping jaw around the circumferential direction of through -hole is with setting at the same side end surface of base, the sliding block is slidably arranged in the direction of through -hole to one side of base, four clamping jaw installs on a sliding block respectively, transmission mechanism includes first toothed rack, second toothed rack, with the first toothed rack meshing connection's first gear, with second toothed rack meshing connection's second gear, with second gear meshing connection's third gear, first gear and third gear all are with drive cylinder's output shaft transmission connection, first toothed rack and second toothed rack are oppositely arranged on both sides of sliding block, when first gear and first toothed rack disengage, second gear and second toothed rack meshing transmission.

[0010] Further, the chuck further comprises a protective shell, the protective shell is used for isolating the transmission mechanism, and the drive cylinder is rotatably arranged on the outside of the protective shell around the central axis of the through hole.

[0011] Further, the protective shell further has a sliding groove for mounting the sliding block and mounting grooves arranged on both sides of the sliding groove, and the mounting grooves are three, three mounting grooves are respectively used for accommodating the first gear, the second gear and the third gear.

[0012] Further, the chuck further comprises a transmission gear ring, the transmission gear ring is rotatably arranged on the base, the first gear and the third gear are meshingly connected with the transmission gear ring, the output telescopic shaft of the drive cylinder is fixedly connected with the transmission gear ring, the drive cylinder drives the transmission gear ring to rotate, so as to drive the first gear and the third gear mechanism to rotate simultaneously.

[0013] Further, the drive cylinder is arranged parallel to the end surface of the base, an intermediate connecting piece is rotatably arranged at the end of the telescopic shaft of the drive cylinder and extends along the axis direction of the through hole, and the intermediate connecting piece is further fixedly connected with the transmission gear ring.

[0014] Further, the two clamping jaws are arranged oppositely in up-down direction, the transmission gear ring comprises a first gear ring, the first gear ring is simultaneously connected with the two transmission mechanisms for driving the two clamping jaws arranged oppositely in up-down direction to move, so as to drive the two clamping jaws arranged oppositely in up-down direction to move towards each other or away from each other.

[0015] Further, the first gear ring is simultaneously connected with the two driving cylinder output telescopic shafts, and the two driving cylinders are symmetrically arranged at the upper and lower ends of the base.

[0016] Further, the other two clamping jaws are arranged oppositely in left-right direction, the transmission gear ring further comprises a second gear ring, the second gear ring is simultaneously connected with the two transmission mechanisms for driving the two clamping jaws arranged oppositely in left-right direction to move, so as to drive the two clamping jaws arranged oppositely in left-right direction to move towards each other or away from each other.

[0017] Further, the second gear ring is simultaneously connected with the two driving cylinder output telescopic shafts, and the two driving cylinders are symmetrically arranged at the left and right sides of the base.

[0018] Further, the first gear ring and the second gear ring are arranged on the base in a stacked manner along the direction in which the pipe body extends into the through hole.

[0019] The utility model discloses beneficial effects:

[0020] 1、 the whole transmission mechanism comprises two parts that can be independently driven, one part is a first transmission structure composed of a first gear and a first rack, and the other part is a second transmission structure formed by a third gear, a second gear and a second rack;In addition to being able to drive the slider to move through the first transmission structure, the driving cylinder can also drive the slider to move through the second transmission structure alone, so as to drive the slider to move respectively, and the driving cylinder can also make the two transmission structures drive the slider to move in turn, so that the slider obtains a longer stroke, or the length of the rack is shortened, so as to improve the operation stability of the transmission mechanism and reduce the chuck failure rate.

[0021] 2、 the transmission mechanism is divided into two parts to be arranged on the two sides of the sliding seat, so that the spatial layout of the transmission mechanism becomes more reasonable, and convenience is provided for maintaining the chuck.

[0022] 3、 power is from the first gear to the first rack, and from the third gear to the second gear and from the second gear to the second rack, and the power is damaged at most only twice, under the same power output, the clamping force of the clamping jaw is larger, and the clamping effect is better and more stable. BRIEF DESCRIPTION OF DRAWINGS

[0023] The accompanying drawings, which are incorporated in and constitute a part of this specification, illustrate embodiments of the application and, together with the description, explain the principles of the application. In the drawings, like reference numerals are used to represent like elements. The accompanying drawings are some embodiments of the present application, not all embodiments. For those skilled in the art, other drawings can be obtained from these drawings without creative labor.

[0024] Figure 1 It is one of the overall structure schematic diagram of chuck of the embodiment;

[0025] Figure 2 It is the second overall structure schematic diagram of chuck of the embodiment (from the left rear to the right front perspective); Figure 1

[0026] Figure 3 It is one of the structure schematic diagram of transmission mechanism of the embodiment;

[0027] Figure 4 It is the second structure schematic diagram of transmission mechanism of the embodiment;

[0028] Figure 5 It is the structure schematic diagram of protective shell of the embodiment;

[0029] 1-base, 2-clamping jaw, 3-sliding block, 4-transmission mechanism, 41-first rack, 42-second rack, 43-first gear, 44-second gear, 45-third gear, 46-transmission gear, 461-first gear ring, 462-second gear ring, 47-intermediate connecting piece, 5-protective shell, 51-sliding slot, 6-driving cylinder. DETAILED DESCRIPTION

[0030] In this specification, the orientation terms such as up, down, left, right, front, back, front, back, top, bottom, etc. mentioned or possibly mentioned are defined relative to the structure shown in the drawings, and the words "inner" and "outer" respectively refer to the direction towards or away from the geometric center of a particular component. They are relative concepts, so they may change accordingly according to their different positions, different use states. Therefore, these or other orientation terms should not be interpreted as restrictive terms.

[0031] Please refer to Figures 1 to 5 , refer to Figure 1 ​As shown in the orientation, the full stroke chuck of the pipe cutting machine in the utility model embodiment, mainly includes base 1, clamping jaw 2, sliding block 3, transmission mechanism 4, drive cylinder 6, the middle part of base 1 is equipped with through hole, four clamping jaws 2 are set at the same side end surface of base 1 around the circumferential direction of through hole, sliding block 3 is slidably arranged on the side of base 1 along the direction towards through hole, four clamping jaws 2 are each installed on a sliding block 3, transmission mechanism 4 includes first rack 41, second rack 42, first gear 43 that is meshed with first rack 41, second gear 44 that is meshed with second rack 42, third gear 45 that is meshed with second gear 44, first gear 43 and third gear 45 are all in transmission connection with the output shaft of drive cylinder 6, first rack 41 and second rack 42 are oppositely arranged on the two sides of sliding block 3, after first gear 43 and first rack 41 disengage, second gear 44 and second rack 42 are in meshing transmission.

[0032] Specifically, in the embodiment, base 1 is an I-shaped disc, the through hole is a square through hole, the four clamping jaws 2 of base 1 are all arranged on the left rear end surface of base 1, the four clamping jaws 2 are evenly distributed around the left rear end surface of base 1 according to the up-down and left-right orientation, and the two clamping jaws 2 arranged in the up-down orientation are also oppositely arranged in the up-down direction, and the two clamping jaws 2 arranged in the left-right orientation are also oppositely arranged in the left-right direction; four sliding blocks 3 are arranged at the left rear end surface of base 1 according to the up-down and left-right orientation, and one clamping jaw 2 is fixedly installed on each sliding block 3.

[0033] Transmission mechanism 4 and drive cylinder 6 are also provided with four, one drive cylinder 6 and one transmission mechanism 4 form a drive mechanism, four sets of drive mechanisms are also arranged on base 1 according to the up-down and left-right orientation, but the four sets of drive mechanisms are arranged on the circumferential side of base 1.

[0034] In the embodiment, the structures of the four sets of drive mechanisms are completely same, so only the drive mechanism arranged in the up orientation of base 1 is taken as an example to illustrate the specific structure of the drive mechanism; please refer to Figure 1 and Figure 3 , and refer to Figure 1 As shown in the orientation, the drive cylinder 6 is arranged parallel to the rear end surface of base 1, and the tail end of drive cylinder 6 is rotatably installed on the protective shell 5 arranged on the end surface of base 1 for installing clamping jaw 2 through a rotating shaft, the intermediate connecting piece 47 arranged in the direction along the rear end surface of base 1 is arranged at the output telescopic shaft end of drive cylinder 6, the intermediate connecting piece 47 is rotatably arranged at the output telescopic shaft end of drive cylinder 6 through a bearing, the rear end of intermediate connecting piece 47 is fixedly connected with the transmission gear ring 46 rotatably arranged on base 1, and first gear 43 and third gear 45 are all in meshing connection with transmission gear ring 46.

[0035] In addition, please refer toFigure 2 and Figure 5 ,by Figure 5 Taking the direction shown as an example, a protective shell 5 is also fixedly installed at the front end face of the base 1. The protective shell 5 is tightly fitted to the front end face of the base 1. The protective shell 5 is also provided with a sliding groove 51 for installing the slider 3 and mounting slots on both sides of the sliding groove 51. There are three mounting slots, which are respectively used to accommodate the first gear 43, the second gear 44, and the third gear 45. The mounting slots for accommodating the first gear 43 and the second gear 44 are both connected to the sliding groove 51. The mounting slot for accommodating the second gear 44 is also connected to the mounting slot for accommodating the third gear 45. Part of the transmission gear ring 46 also extends into the mounting slots for accommodating the first gear 43 and the third gear 45.

[0036] In this regard, under the isolation effect of the protective housing 5, the first gear 43 and the first rack 41, the second gear 44 and the second rack 42, the second gear 44 and the third gear 45, the first gear 43 and the transmission gear ring 46, and the third gear 45 and the transmission gear ring 46 can still mesh and connect.

[0037] Please see Figure 3 and Figure 4 and refer to Figure 3 As shown, the first rack 41, the second rack 42, and the slider 3 are integrally formed. The first rack 41 is formed on the right side of the slider 3. The first gear 43 is located on the right side of the slider 3. The first gear 43 is rotatably mounted inside the protective housing 5 and meshes with the first rack 41. The second gear 44 is also rotatably mounted inside the protective housing 5 and meshes with the second rack 42. The second gear 44 also meshes with the third gear 45 located above it. The third gear 45 and the first gear 43 are simultaneously meshed with a transmission gear ring 46.

[0038] In response, when the drive cylinder 6 operates to extend its output shaft, the transmission gear ring 46 is pushed to rotate by the drive cylinder 6. The rotating transmission gear ring 46 then drives the first gear 43 and the third gear 45 to rotate. The third gear 45 then drives the second gear 44 to rotate. The rotation directions of the first gear 43 and the second gear 44 are opposite, but the first gear 43 and the second gear 44 are arranged opposite to each other on both sides of the slider 3 and are misaligned. Therefore, by controlling the relative positional relationship between the second gear 44 and the first gear 43, when the first gear 43 rotates to drive the first rack 41 to move downward until it disengages from the first rack 41, the second gear 44 can immediately engage with the second rack 42 and drive the slider 3 to continue moving downward, thereby alternately driving the slider 3 to move.

[0039] In the embodiment, the other three groups of driving mechanisms have the same structure as the driving mechanism described above.

[0040] However, the four groups of driving mechanisms are different in connection mode. In order to make the two groups of driving mechanisms arranged vertically only drive the two sliders 3 to move towards or away from each other, the two groups of driving mechanisms arranged horizontally only drive the two sliders 3 to move towards or away from each other, and the two groups of driving mechanisms arranged vertically and the two groups of driving mechanisms arranged horizontally are independent of each other, the chuck can clamp more kinds of pipe bodies.

[0041] Please refer to Figure 4 The transmission gear ring 46 includes a first gear ring 461 and a second gear ring 462, the first gear ring 461 and the second gear ring 462 overlap, and are rotatably sleeved on the base 1. The output telescopic shafts of the two driving cylinders 6 arranged vertically are fixedly connected with the first gear ring 461, and the two driving cylinders 6 arranged horizontally are fixedly connected with the second gear ring 462. Furthermore, the two driving cylinders 6 arranged vertically and the two driving cylinders 6 arranged horizontally are symmetrically arranged with the geometric center of the through hole as the symmetric center. The synchronous extension or synchronous retraction of the output telescopic shafts of the two driving cylinders 6 arranged vertically can drive the first gear ring 461 to rotate, and the synchronous extension or synchronous retraction of the output telescopic shafts of the two driving cylinders 6 arranged horizontally can drive the second gear ring 462 to rotate, so as to simplify the driving control mode.

[0042] In other embodiments, in order to reduce the cost, only one direction of the left and right directions can be selected to install a group of driving mechanisms, and only one direction of the up and down directions can be selected to install another group of driving mechanisms.

[0043] The above-mentioned matters not mentioned are applicable to the prior art.

[0044] Finally, it should be noted that: the above embodiments are only used to illustrate the technical solutions of the present application, and not to limit them. Although the present application has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that they can still modify the technical solutions recorded in the foregoing embodiments, or make equivalent replacement for part of the technical features; and these modifications or replacements do not make the essence of the corresponding technical solutions deviate from the spirit and scope of the technical solutions of the embodiments of the present application.

Claims

1. A full stroke chuck for a pipe cutting machine, characterized in that, The chuck comprises a base (1), a clamping jaw (2), a sliding block (3), a transmission mechanism (4), a driving cylinder (6), a through hole is arranged in the middle of the base (1), four clamping jaws (2) are arranged at the same side end surface of the base (1) in the circumferential direction of the through hole, the sliding block (3) is slidably arranged on one side of the base (1) in the direction towards the through hole, four clamping jaws (2) are respectively mounted on one sliding block (3), the transmission mechanism (4) comprises a first rack (41), a second rack (42), a first gear (43) in meshing connection with the first rack (41), a second gear (44) in meshing connection with the second rack (42), a third gear (45) in meshing connection with the second gear (44), the first gear (43) and the third gear (45) are in transmission connection with the output shaft of the driving cylinder (6), the first rack (41) and the second rack (42) are oppositely arranged on both sides of the sliding block (3), when the first gear (43) is disengaged from the first rack (41), the second gear (44) is in meshing transmission with the second rack (42).

2. The chuck of claim 1 wherein, The chuck further comprises a protective shell (5) for isolating the transmission mechanism (4), and the driving cylinder (6) is rotatably arranged outside the protective shell (5) around the central axis of the through hole.

3. The chuck of claim 2 wherein, The protective shell (5) is further provided with a sliding groove (51) for mounting the sliding block (3), mounting grooves are arranged on both sides of the sliding groove (51), and three mounting grooves are arranged for accommodating the first gear (43), the second gear (44) and the third gear (45) respectively.

4. The chuck of claim 1 wherein, The chuck further comprises a transmission gear ring (46) rotatably arranged on the base (1), the first gear (43) and the third gear (45) are in meshing connection with the transmission gear ring (46), the output telescopic shaft of the driving cylinder (6) is fixedly connected with the transmission gear ring (46), the driving cylinder (6) drives the transmission gear ring (46) to rotate, so as to drive the first gear (43) and the third gear (45) to rotate simultaneously.

5. The chuck of claim 4 wherein, The driving cylinder (6) is arranged parallel to the end surface of the base (1), an intermediate connecting piece (47) is rotatably arranged at the end of the telescopic shaft of the driving cylinder (6) and extends along the axis direction of the through hole, and the intermediate connecting piece (47) is further fixedly connected with the transmission gear ring (46).

6. The chuck of claim 4 wherein, Two clamping jaws (2) are oppositely arranged, the transmission gear ring (46) comprises a first gear ring (461), the first gear ring (461) is in transmission connection with two transmission mechanisms (4) for driving the movement of two oppositely arranged clamping jaws (2), so as to drive the two oppositely arranged clamping jaws (2) to move towards or away from each other.

7. The chuck of claim 6 wherein, The first gear ring (461) is fixedly connected with two driving cylinder (6) output telescopic shafts, and the two driving cylinders (6) are symmetrically arranged at the upper and lower ends of the base (1).

8. The chuck of claim 6 wherein, The other two clamping jaws (2) are arranged oppositely, and the transmission gear ring (46) further comprises a second gear ring (462), the second gear ring (462) is in transmission connection with two transmission mechanisms (4) for driving the two oppositely arranged clamping jaws (2) to move, so as to drive the two oppositely arranged clamping jaws (2) to move towards or away from each other.

9. The chuck of claim 8 wherein, The second gear ring (462) is fixedly connected with two driving cylinder (6) output telescopic shafts, and the two driving cylinders (6) are symmetrically arranged at the left and right sides of the base (1).

10. The chuck of claim 8 wherein, The first gear ring (461) and the second gear ring (462) are arranged in a stacked manner on the base (1) along the direction in which the pipe body extends into the through hole.

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