CN113385574A - Pipe cutting machine for cutting bicycle pipe fittings - Google Patents

Abstract

The utility model relates to a pipe cutting machine for cutting bicycle pipe fitting relates to the field of pipe cutting machine, and it includes the workstation, is used for the fixing device of fixed tubular product and is used for carrying out die-cut device to the tubular product tip, and fixing device and die-cut device all set up on the workstation, and fixing device includes first fixed mould, second fixed mould and is used for placing the interior head that props in the tubular product tip, and first fixed mould and second fixed mould cooperation are used, and respectively with the outside butt of tubular product, interior head that props adopts magnetic material to make, is provided with the magnetic head on the workstation, the magnetic head with the outside butt of tubular product, the magnetic head chooses magnet for use to make, the magnetic head uses with interior head cooperation. This application has can reduce the sunken effect of possibility to appear in tubular product tip incision when die-cutting to tubular product.

Description

Pipe cutting machine for cutting bicycle pipe fittings

Technical Field

The application relates to the field of pipe cutters, in particular to a pipe cutter for cutting bicycle pipe fittings.

Background

The bicycle is a common environment-friendly vehicle, has simple structure and convenient use and maintenance, and can feel the fun of the bicycle for riders in the process of utilizing the bicycle to go out. With the development of the times, bicycles have more and more functions and are deeply popular with the public.

The frame of bicycle is usually formed by welding a plurality of pipes, and when the frame of bicycle is produced, the end of the pipe needs to be processed into a circular pipe arc curved surface before the joint of the pipe and the pipe is welded, so that the pipe and the pipe can be welded in a matching way. When the end part of the pipe is processed into the circular pipe arc curved surface, the end part of the pipe can be milled firstly and then processed by polishing, but the processing method has lower efficiency and poorer quality stability, so that when the end part of the pipe is processed in a large batch, the end part of the pipe is processed by adopting a punching mode, namely the pipe is placed on a punching machine, and then the pipe is punched through a punching die, so that the end part of the pipe is processed into the circular pipe arc curved surface.

In view of the above related art, the inventor believes that when a tube is machined by using a punching mode, when the tube is made of a soft material, a notch at the end of the tube may be dented when the tube is punched by a punching die, and the tube may be scrapped when the tube is serious.

Disclosure of Invention

In order to be able to reduce the sunken possibility of appearing in tubular product tip incision department when die-cutting tubular product, this application provides a pipe cutting machine for cutting bicycle pipe spare.

The application provides a pipe cutting machine for cutting bicycle pipe fitting adopts following technical scheme:

the utility model provides a pipe cutting machine for cutting bicycle pipe fitting, includes the workstation, is used for the fixing device of fixed tubular product and is used for carrying out die-cut device to the tubular product tip, and fixing device and die-cut device all set up on the workstation, and fixing device includes first fixed mould, second fixed mould and is used for placing the interior head that props in the tubular product tip, and first fixed mould and second fixed mould cooperate the use, and respectively with the outside butt of tubular product.

Through adopting above-mentioned technical scheme, when die-cutting the tubular product tip, first fixed mould and second fixed mould set up the outside at tubular product respectively, and with the tubular product butt, insert interior stay in tubular product again, then die-cut device is die-cut the one end that the tubular product is close to interior stay, thereby form the arc mouth curved surface, first fixed mould and second fixed mould and tubular product outside butt, interior stay and the inboard butt of tubular product, thereby make tubular product when by die-cut, the inboard and the outside of tubular product all are fixed by fixing device, thereby can be when die-cutting the tubular product, reduce the sunken possibility of tubular product tip cut department appearance.

Optionally, the inner supporting head is made of a magnetic material, a magnetic head is arranged on the workbench and is abutted to the outer side of the pipe, the magnetic head is made of a magnet, and the magnetic head and the inner supporting head are matched for use.

Through adopting above-mentioned technical scheme, will interior stay head adopt magnetic material to make to the magnetic head and the cooperation of interior stay head that make magnet use, when die-cut device carries out die-cut to tubular product, the magnetic head can play certain fixed action to interior stay head, makes interior stay head can play the effect of support to the tip of tubular product all the time, reduces the sunken possibility of tubular product tip appearance. After the end of the pipe is punched, the pipe is taken out from between the first fixed die and the second fixed die, and then the pipe is inclined, so that the inner support head slides out of the pipe along the inclined direction of the pipe.

Optionally, the first fixed die is arranged above the second fixed die, and the magnetic head is embedded in the second fixed die.

Through adopting above-mentioned technical scheme, set up first fixed mould in the top of second fixed mould for first fixed mould and second fixed mould can press from both sides tightly about tubular product, inlay the magnetic head simultaneously and establish on the second fixed mould, make the second fixed mould when fixed to the tubular product outside, the interior head that props can support the tubular product inboard, make fixing device's wholeness better, the installation of installation second fixed mould realization to the magnetic head simultaneously, the installation of magnetic head has been saved.

Optionally, a pushing assembly for pushing the inner supporting head towards the magnetic head is further disposed on the workbench.

Through adopting above-mentioned technical scheme, be provided with the promotion subassembly that is used for pushing interior stay towards the direction of location head on the workstation, during the stay in the use, place the tip at tubular product with interior stay, then promote the subassembly and promote the top that the interior stay that will be located the tubular product tip promotes to the magnetic head, and be inhaled by the magnetic head, thereby the installation of stay in the realization, make interior stay can not be because the mounted position is too close to the tip of tubular product, thereby when die-cut device carries out die-cut to tubular product, the die-cut process to die-cut device produces the influence.

Optionally, the pushing assembly comprises a support frame, a pushing cylinder and a pushing head, the support frame is fixedly arranged on the workbench, the pushing cylinder is fixedly arranged on the support frame, and the pushing head is fixedly arranged on a piston rod of the pushing cylinder.

Through adopting above-mentioned technical scheme, when the subassembly that promotes when pushing away the interior stay head and pushing towards the direction that is close to the magnetic head, the piston rod that promotes the cylinder extends to drive and promote the head and stretch into in the tubular product and with interior stay head butt, thereby drive interior stay head and remove towards the direction of magnetic head, realize the installation of internal stay head.

Optionally, the fixed length subassembly that is used for carrying out the fixed length to tubular product that is provided with on the workstation, the fixed length subassembly is including deciding length frame, connecting plate and being used for inserting the fixed length head of establishing at the tubular product tip, decides length frame and workstation fixed connection, and fixed length head sets up on the connecting plate, connecting plate and fixed length frame sliding connection, and the length direction of fixed length frame is the same with the direction of placing of tubular product, is provided with the mounting between connecting plate and the fixed length frame.

By adopting the technical scheme, when the pipe is fixed in length, the fixed length head is pulled along the placing direction of the pipe, so that the fixed length head drives the connecting plate to slide on the fixed length frame, the punching position of the pipe is determined according to the design size of the pipe, and then the connecting plate and the fixed length frame are fixed through the fixing piece, so that the fixed length of the pipe is realized, and the lengths of the punched pipes are ensured to be the same; when the pipe is punched, one end of the pipe, which is far away from the inner support head, is sleeved on the fixed length head, so that the pipe is positioned.

Optionally, an adjusting assembly for adjusting the tube punching angle is arranged below the punching device.

Through adopting above-mentioned technical scheme, when adjusting the die-cut angle to tubular product, rotate die-cut device through adjusting part for die-cut device changes the die-cut position of tubular product, thereby realizes the adjustment to the die-cut position of tubular product.

Optionally, the sliding tray has been seted up on the workstation, the sliding tray is arc, the cross-section of sliding tray is the type of falling T, adjusting part includes sliding strip and latch segment, the sliding strip sets up on die-cut device's bottom surface and lies in the sliding tray, sliding strip and sliding tray sliding connection, the latch segment is provided with two, and two latch segments set up respectively at the both ends of sliding strip, two latch segments all with sliding tray sliding connection, wear to be equipped with locking bolt on the latch segment, the inseparable butt of the tank bottom of locking bolt and sliding tray.

Through adopting above-mentioned technical scheme, when the die-cut angle of cutting device to tubular product was adjusted, along the length direction pulling slide bar of sliding tray, make the slide bar move die-cut device and rotate, thereby realize the regulation to die-cut device angle, then the pulling latch segment makes the latch segment move to the both ends of slide bar and with the butt of die-cut device, then the locking bolt of screwing, make the slot bottom of locking bolt and sliding tray closely butt, thereby fix the both ends at the sliding tray with two latch segments, the realization is fixed to die-cut device.

Optionally, the workbench comprises a top plate and a bottom plate, the top plate is located above the bottom plate and is detachably connected with the bottom plate, the sliding groove comprises an upper portion and a lower portion, the cross sections of the upper portion and the lower portion are rectangular, and the upper portion and the lower portion are respectively arranged on the top plate and the bottom plate.

Through adopting above-mentioned technical scheme, because die-cut device can produce a large amount of iron fillings to the die-cut in-process of tubular product, when iron fillings fall on the sliding tray, iron fillings can disturb the slip process production of sliding tray, and the cross-section of sliding tray is the shape of falling T, it is comparatively troublesome to make the clearance process of sliding tray, set up the workstation into roof and bottom plate, when clearing up iron fillings, pull down the roof from the bottom plate, thereby make upper portion and lower part break away from, clear up the iron fillings in the lower part again, make the iron fillings clearance process that is located the edge department in the sliding tray more convenient, thereby reduce the clearance degree of difficulty to the sliding tray.

Optionally, a retainer ring is fixedly arranged at the edge of the top plate, the retainer ring and the top plate are integrally formed, and the retainer ring is sleeved on the bottom plate and is in sliding connection with the bottom plate.

Through adopting above-mentioned technical scheme, set up the retaining ring in the edge of roof for the junction at roof and bottom plate can be covered to the retaining ring, thereby reduces the possibility that iron fillings get into between roof and the bottom plate, has guaranteed the compactness between roof and the bottom plate.

In summary, the present application includes at least one of the following beneficial technical effects:

1. by arranging the first fixed die, the second fixed die and the inner supporting head, when the punching device punches the pipe, the first fixed die and the second fixed die can support the outer side of the pipe, and the inner supporting head can support the inner side of the pipe, so that the possibility of the sinking at the cut opening at the end part of the pipe can be reduced when the pipe is punched;

2. the fixed-length component is arranged on the workbench, and can adjust the punching position of the pipe according to the design size of the pipe, so that the fixed length of the pipe is realized, and the lengths of the punched pipes are ensured to be the same;

3. through set up adjusting part between die-cut device and workstation, adjusting part can make die-cut device change the die-cut position of tubular product to the realization is to the adjustment of the die-cut angle of tubular product.

Drawings

FIG. 1 is a schematic structural diagram of an embodiment of the present application;

fig. 2 is a sectional view intended to show the fixing device;

fig. 3 is a schematic view intended to show the construction of the fixed-length assembly;

fig. 4 is a schematic view intended to show the structure of the punching device.

Description of reference numerals: 1. a work table; 11. a top plate; 111. a retainer ring; 12. a base plate; 13. a connecting bolt; 14. a sliding groove; 141. an upper portion; 142. a lower portion; 2. a fixing device; 21. a first fixed mold; 22. a second fixed mold; 221. a magnetic head; 23. an inner support head; 24. a body; 3. a punching device; 31. a sliding seat; 311. a sliding track; 312. a driving cylinder; 32. a movable frame; 33. punching a head; 4. an adjustment assembly; 41. a slide bar; 42. a locking block; 421. locking the bolt; 5. a fixed-length component; 51. a fixed length frame; 511. fixing grooves; 52. a connecting plate; 521. fixing the bolt; 522. a connecting port; 53. a fixed length head; 531. a fixed-length bolt; 6. a pushing assembly; 61. a support frame; 62. a push cylinder; 63. a pusher head; 7. a pipe.

Detailed Description

The present application is described in further detail below with reference to figures 1-4.

The embodiment of the application discloses a pipe cutting machine for cutting bicycle pipe fitting. Referring to fig. 1, a pipe cutting machine for cutting bicycle pipe includes a table 1, a fixing device 2 for fixing a pipe 7, and a punching device 3 for punching an end of the pipe 7, the fixing device 2 and the punching device 3 being both provided on the table 1. The workbench 1 is also provided with a fixed-length component 5 for fixing the length of the pipe 7.

During the use, place tubular product 7 level, then utilize fixed length subassembly 5 to carry out the fixed length to tubular product 7, recycle fixing device 2 and fix tubular product 7, die-cut device 3 is die-cut to the tip of tubular product 7 at last to the realization is die-cut the tip of tubular product 7 for the arc mouth curved surface.

Referring to fig. 1 and 2, the fixing device 2 includes a first fixed mold 21 and a second fixed mold 22, the second fixed mold 22 is fixedly disposed on the table 1, and the first fixed mold 21 is located above the second fixed mold 22. The fixing device 2 further comprises a machine body 24 for driving the first fixed die 21 to move towards the second fixed die 22, the first fixed die 21 is fixedly arranged on the machine body 24, the moving direction of the first fixed die 21 is a vertical direction, and the first fixed die 21 and the second fixed die 22 are matched for use.

When the pipe material 7 is fixed by the first fixed die 21 and the second fixed die 22, the machine body 24 drives the first fixed die 21 to move in a vertically downward direction, so that the first fixed die 21 abuts against the top surface of the pipe material 7, and the pipe material 7 is fixed by the first fixed die 21 and the second fixed die 22.

Referring to fig. 1 and 2, the fixing device 2 further includes an inner supporting head 23 disposed in the end portion of the tube 7, the inner supporting head 23 is cylindrical and abuts against the inner wall of the tube 7, the inner supporting head 23 is made of a magnetic material, a magnetic head 221 is embedded in the second fixed mold 22, the magnetic head 221 abuts against the bottom end of the tube 7, and the magnetic head 221 is made of a magnet and is used in cooperation with the inner supporting head 23. Still be provided with on the workstation 1 and be used for the promotion subassembly 6 that promotes interior stay head 23 towards magnetic head 221 from the tip of tubular product 7, promotion subassembly 6 includes support frame 61, push cylinder 62 and push head 63, support frame 61 is rectangular plate-like and vertical setting, push cylinder 62 is fixed to be set up on support frame 61, the length direction of push cylinder 62 is the same with the length direction of tubular product 7, push head 63 is fixed to be set up on push cylinder 62's piston rod and with interior stay head 23 butt.

After the tube 7 is fixed by the first fixed die 21 and the second fixed die 22, the inner support head 23 is placed at the end of the tube 7, and then the piston rod of the pushing cylinder 62 extends to drive the pushing head 63 to move towards the direction of the inner support head 23 and abut against the inner support head 23, the pushing head 63 drives the inner support head 23 to move towards the direction close to the magnetic head 221, so that the magnetic head 221 attracts the inner support head 23, the inner support head 23 cannot move along the length direction of the tube 7 when the punching device 3 punches the tube 7, and the influence of the inner support head 23 on the punching device 3 when the punching device 3 punches the tube 7 is reduced.

When the blanking device 3 performs blanking on the tube 7, the first fixed die 21 and the second fixed die 22 can support the outer side of the tube 7, and the inner supporting head 23 can support the inner side of the tube 7, so that the possibility of the end part of the tube 7 sinking is reduced; after the end portion of the pipe 7 is punched, the pipe 7 is rotated, so that the pipe 7 is obliquely arranged, the inner support head 23 in the pipe 7 falls down along the oblique direction of the pipe 7, and the inner support head 23 is taken out of the pipe 7.

Referring to fig. 1 and 3, the workbench 1 includes a bottom plate 12 and a top plate 11, the top plate 11 is disposed above the bottom plate 12, a retainer ring 111 is disposed at an edge of the top plate 11, the retainer ring 111 and the top plate 11 are integrally formed, the retainer ring 111 is sleeved on the bottom plate 12 and is slidably connected with the bottom plate 12, a sliding direction of the retainer ring 111 is a vertical direction, a plurality of connecting bolts 13 are arranged on the top plate 11 in a penetrating manner, and the plurality of connecting bolts 13 are uniformly disposed at the edge of the top plate 11 and are in threaded connection with the bottom plate 12. The workbench 1 is provided with two sliding grooves 14, the sliding grooves 14 are inverted T-shaped, the sliding grooves 14 are arc-shaped, the circle centers of the two sliding grooves 14 are the ends, close to the supporting frame 61, of the second fixed dies 22, the sliding grooves 14 comprise upper portions 141 and lower portions 142, the cross sections of the upper portions 141 and the lower portions 142 are rectangular, and the upper portions 141 and the lower portions 142 are respectively arranged on the top plate 11 and the bottom plate 12.

Referring to fig. 1 and 4, the die cutting device 3 includes a sliding seat 31, a moving frame 32 and a die cutting head 33, the sliding seat 31 is slidably connected to the worktable 1, the sliding seat 31 is in a rectangular plate shape and is horizontally arranged, the length direction of the sliding seat 31 is the same as the radial direction of the arc where the sliding groove 14 is located, an adjusting assembly 4 is arranged below the sliding seat 31, the adjusting assembly 4 includes a sliding bar 41 and a locking block 42, the sliding bar 41 is fixed to the bottom surface of the sliding seat 31, two sliding bars 41 are arranged, referring to fig. 3 and 4, the two sliding bars 41 are arranged corresponding to the sliding groove 14, the sliding bar 41 is located in the sliding groove 14 and is slidably connected to the sliding groove 14, the four locking blocks 42 are arranged and are averagely arranged at two ends of the sliding bar 41, a locking bolt 421 is arranged on the locking block 42, and the locking bolt 421 is arranged on the locking block 42 and is tightly abutted to the bottom of the sliding groove 14.

When the punching angle of the pipe 7 is adjusted, the sliding seat 31 is rotated, so that the sliding seat 31 drives the sliding bar 41 to slide in the sliding groove 14, and the length direction of the sliding seat 31 is changed; then, the locking block 42 is pulled so that the locking block 42 slides to the two ends of the sliding bar 41 and abuts against the sliding seat 31, and then the locking bolt 421 is tightened so that the locking bolt 421 abuts against the groove bottom of the sliding groove 14 tightly, thereby fixing the sliding seat 31 on the workbench 1.

When scrap iron on the workbench 1 is cleaned, the connecting bolt 13 is unscrewed, so that the connecting bolt 13 is separated from the bottom plate 12, then the top plate 11 is pulled along the vertical direction, so that the top plate 11 is separated from the bottom plate 12, and then the upper part 141 and the lower part 142 are respectively cleaned, so that the cleaning process of scrap iron at the inner corner of the sliding groove 14 is more convenient; finally, the top plate 11 is placed on the bottom plate 12, the connecting bolt 13 is screwed, so that the top plate 11 and the bottom plate 12 are fixed, the check ring 111 is sleeved on the bottom plate 12, the check ring 111 can cover the connecting position of the top plate 11 and the bottom plate 12, and the possibility that scrap iron enters between the top plate 11 and the bottom plate 12 is reduced.

Referring to fig. 4, a sliding rail 311 is fixedly disposed at a top end of the sliding seat 31, the sliding rail 311 is T-shaped, a length direction of the sliding rail 311 is the same as a length direction of the sliding seat 31, the moving frame 32 is sleeved on the sliding rail 311 and slidably connected with the sliding rail 311, the entire punching head 33 is cylindrical, the punching head 33 is fixedly disposed on the moving frame 32, a length direction of the punching head 33 is the same as a length direction of the sliding seat 31, a driving cylinder 312 for driving the moving frame 32 to move toward an end of the tube 7 is fixedly disposed on the sliding seat 31, and a piston rod of the driving cylinder 312 is fixedly connected with a surface of the moving frame 32 far away from the punching head 33.

When the end of the tube 7 is blanked by the blanking device 3, the piston rod of the driving cylinder 312 extends, so that the moving frame 32 moves on the sliding track 311 along the length direction of the sliding seat 31, and the blanking head 33 is driven to move towards the end of the tube 7, thereby realizing the blanking of the end of the tube 7.

Referring to fig. 1 and 3, the fixed length assembly 5 includes a fixed length frame 51, a connecting plate 52 and a fixed length head 53 inserted into an end of the tube 7, the fixed length frame 51 is fixedly connected to the workbench 1 and disposed at an end of the tube 7 away from the supporting frame 61, a length direction of the fixed length frame 51 is the same as a length direction of the tube 7, a fixing groove 511 is disposed on the fixed length frame 51, the length direction of the fixing groove 511 is the same as the length direction of the fixed length frame 51, the fixing groove 511 is inverted T-shaped, the connecting plate 52 is vertically disposed and is L-shaped, a bottom end of the connecting plate 52 is located in the fixing groove 511 and is slidably connected with the fixing groove 511, a fixing member is disposed between the connecting plate 52 and the fixed length frame 51, the fixing member is a fixing bolt 521, and the fixing bolt 521 is disposed at a bottom end of the connecting plate 52 and is tightly abutted to a groove bottom end of the fixing groove 511; the fixed length head 53 is cylindrical and is slidably connected with the connecting plate 52, a vertical connecting port 522 is formed in the connecting plate 52, a fixed length bolt 531 is connected to the fixed length head 53 in a threaded mode, and the fixed length bolt 531 penetrates through the connecting port 522 and abuts against the connecting plate 52.

When utilizing fixed length subassembly 5 to carry out the fixed length to tubular product 7, the length direction pulling connecting plate 52 along fixed slot 511 for the bottom of connecting plate 52 slides in fixed slot 511, thereby adjust the distance between fixed length head 53 and the second fixed mould 22 and be close to support frame 61 one end, then follow vertical direction pulling fixed length head 53, make fixed length bolt 531 slide in connector 522, the fixed length bolt 531 of screwing again, make fixed length bolt 531 and connecting plate 52 butt, thereby fix fixed length head 53 on connecting plate 52. When the pipe fixing device is used, the end part of the pipe 7 is sleeved on the fixed length head 53, so that the pipe 7 is horizontally arranged and is positioned between the first fixed die 21 and the second fixed die 22, the fixed length of the pipe 7 is realized, and the same length of the punched pipe 7 is ensured.

The implementation principle of the pipe cutting machine for cutting the bicycle pipe fitting in the embodiment of the application is as follows: firstly, fixing the length of the pipe 7 by using the length fixing component 5, then placing the pipe 7 between the first fixed die 21 and the second fixed die 22, driving the first fixed die 21 to move along the vertical downward direction by the machine body 24, so as to fix the pipe 7 by using the first fixed die 21 and the second fixed die 22, then placing an inner supporting block at the end part of the pipe 7, extending a piston rod of a pushing cylinder 62, driving a pushing head 63 to move towards the direction of an inner supporting head 23, abutting the pushing head 63 against the inner supporting head 23, driving the inner supporting head 23 to move towards the direction close to a magnetic head 221 by the pushing head 63, and enabling the magnetic head 221 to fix the inner supporting head 23; the piston rod of the driving cylinder 312 extends, so that the moving frame 32 moves on the sliding rail 311 along the length direction of the sliding seat 31, and the punching head 33 is driven to move towards the end of the pipe 7, so that the end of the pipe 7 is punched, and the possibility of the sinking at the end cut of the pipe 7 can be reduced when the pipe 7 is punched.

The above embodiments are preferred embodiments of the present application, and the protection scope of the present application is not limited by the above embodiments, so: all equivalent changes made according to the structure, shape and principle of the present application shall be covered by the protection scope of the present application.

Claims (10)

1. A pipe cutting machine for cutting bicycle pipe spare which characterized in that: the punching device comprises a workbench (1), a fixing device (2) for fixing a pipe (7) and a punching device (3) for punching the end part of the pipe (7), wherein the fixing device (2) and the punching device (3) are arranged on the workbench (1), the fixing device (2) comprises a first fixed die (21), a second fixed die (22) and an inner supporting head (23) for placing in the end part of the pipe (7), and the first fixed die (21) and the second fixed die (22) are matched for use and are respectively abutted to the outer side of the pipe (7).

2. The pipe cutter for cutting bicycle pipe as claimed in claim 1, wherein: the inner supporting head (23) is made of a magnetic material, a magnetic head (221) is arranged on the workbench (1), the magnetic head (221) is abutted to the outer side of the pipe (7), the magnetic head (221) is made of a magnet, and the magnetic head (221) is matched with the inner supporting head (23) for use.

3. The pipe cutter for cutting bicycle pipe as claimed in claim 2, wherein: the first fixed die (21) is arranged above the second fixed die (22), and the magnetic head (221) is embedded on the second fixed die (22).

4. The pipe cutter for cutting bicycle pipe as claimed in claim 2, wherein: the workbench (1) is also provided with a pushing assembly (6) for pushing the inner support head (23) towards the direction of the magnetic head (221).

5. The pipe cutter for cutting bicycle pipe as claimed in claim 4, wherein: the pushing assembly (6) comprises a support frame (61), a pushing cylinder (62) and a pushing head (63), the support frame (61) is fixedly arranged on the workbench (1), the pushing cylinder (62) is fixedly arranged on the support frame (61), and the pushing head (63) is fixedly arranged on a piston rod of the pushing cylinder (62).

6. The pipe cutter for cutting bicycle pipe as claimed in claim 1, wherein: fixed length subassembly (5) that are used for carrying out the fixed length to tubular product (7) that are provided with on workstation (1), fixed length subassembly (5) including fixed length frame (51), connecting plate (52) and be used for inserting fixed length head (53) of establishing at tubular product (7) tip, fixed length frame (51) and workstation (1) fixed connection, fixed length head (53) set up on connecting plate (52), connecting plate (52) and fixed length frame (51) sliding connection, the length direction of fixed length frame (51) is the same with the direction of placing of tubular product (7), be provided with the mounting between connecting plate (52) and fixed length frame (51).

7. The pipe cutter for cutting bicycle pipe as claimed in claim 1, wherein: and an adjusting component (4) for adjusting the punching angle of the pipe (7) is arranged below the punching device (3).

8. The pipe cutter for cutting bicycle pipe as claimed in claim 7, wherein: the utility model discloses a die-cut device, including workstation (1), workstation (1) have been seted up sliding tray (14), sliding tray (14) are arc, the cross-section of sliding tray (14) is the type of falling T, adjusting part (4) include sliding strip (41) and latch segment (42), sliding strip (41) set up on the bottom surface of die-cut device (3) and are located sliding tray (14), sliding strip (41) and sliding tray (14) sliding connection, latch segment (42) are provided with two, and two latch segments (42) set up respectively at the both ends of sliding strip (41), two latch segments (42) all with sliding tray (14) sliding connection, wear to be equipped with locking bolt (421) on latch segment (42), locking bolt (421) closely butt with the tank bottom of sliding tray (14).

9. The pipe cutter for cutting bicycle pipe as claimed in claim 8, wherein: workstation (1) includes roof (11) and bottom plate (12), and roof (11) are located the top of bottom plate (12) and can dismantle with bottom plate (12) and be connected, and sliding tray (14) include upper portion (141) and lower part (142), and the cross-section of upper portion (141) and lower part (142) all is the rectangle, and upper portion (141) and lower part (142) set up respectively on roof (11) and bottom plate (12).

10. The pipe cutter for cutting bicycle pipe as claimed in claim 9, wherein: edge on roof (11) is fixed is provided with retaining ring (111), and retaining ring (111) and roof (11) integrated into one piece, and retaining ring (111) cover is established on bottom plate (12) and with bottom plate (12) sliding connection.

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