Adjustable pipe multi-station cutting device

Abstract

The invention provides an adjustable multi-station pipe cutting device, and relates to the field of bicycle accessory machining. The top end face of the cutting workbench is connected with a plurality of sets of clamping bases in a bolt fastening mode. The top end face of the cutting workbench is fixedly connected with a supporting frame. A mounting sliding seat is slidably connected into the supporting frame. A plurality of groups of cutting assemblies are arranged in the mounting sliding seat; the multiple sets of cutting assemblies are aligned with the multiple sets of clamping bases in position correspondingly. A plurality of sets of fixed sliding frames are fixedly connected into the cutting workbench. Sliding mounting bases are slidably connected into the multiple sets of fixed sliding frames. And polishing devices are arranged on the top end surfaces of the multiple groups of sliding mounting seats. And in the resetting process of the cutting assembly, the sliding mounting base is driven to slide in the fixed sliding frame through a series of transmission, the grinding device is jacked up to grind the cut notch, and the problems that workers need to conduct secondary machining on the notch of the pipe so as to remove burrs at the notch, and operation is tedious are solved.

Description

Technical Field

[0001] The invention relates to the technical field of bicycle accessory processing, and in particular to an adjustable pipe multi-station cutting device. Background Art

[0002] In the process of bicycle frame production, in order to ensure the accuracy of frame tube docking and improve the welding quality of bicycle frames, it is usually necessary to perform straight-line cutting on bicycle frame tubes. In order to facilitate straight-line cutting of bicycle frames, workers usually use cutting devices. Existing cutting devices usually consist of a circular saw cutting assembly, a cutting table and a clamping seat.

[0003] For example: the utility model with application number CN201910378498.8 discloses a pipe cutting machine, which specifically includes a cutting table, a cutting saw arranged on one side of the cutting table, a support seat arranged on the cutting table, a bench vise arranged on the support seat, and long strip-shaped claws are arranged on the two jaws of the bench vise, and the side where the claws are close to each other is provided with a slot arranged along its length direction, and the slot is arranged in a flared shape; a long strip-shaped support rod is arranged on the support seat, and the support rod is located below the two jaws of the bench vise, and the side where the two jaws of the bench vise are close to each other is provided with a groove for the support rod to be embedded; the middle part of the claw and the support rod is provided with a notch for the saw blade on the cutting saw to be embedded. The present invention has the following advantages and effects: through the cooperation of the claws, the slots and the support rods, the square pipes and the round pipes are fixed separately, so that the above-mentioned cutting machine can be adapted to pipes of different shapes and diameters, achieving the effect of high versatility.

[0004] However, in the process of using a circular saw cutting assembly to perform straight-line cutting on a bicycle frame tube, burrs are likely to appear at the cut of the tube. In order to ensure the smoothness of the cutting and prevent the burrs from affecting the subsequent welding of the bicycle frame, workers are usually required to perform secondary processing on the cut of the tube to remove the burrs at the cut. The operation is relatively cumbersome and affects the processing efficiency of the tube. Summary of the invention

[0005] In view of this, the present invention provides an adjustable multi-station cutting device for pipes, which is provided with a grinding device and a sliding mounting seat which can automatically grind the incision of the pipe after the cutting is completed. During the process of resetting the cutting assembly after the cutting is completed, as the mounting slide seat moves upward, the control rack drives the control gear to rotate in the opposite direction. At this time, as the control gear rotates, the transmission shaft is driven to rotate. During the rotation of the transmission shaft, the first bevel gear is driven to rotate. As the first bevel gear rotates, the second bevel gear meshed with it is driven to rotate. As the second bevel gear rotates, the control turntable is driven to rotate. During the rotation of the control turntable, the sliding mounting seat is driven to slide in the fixed slide through the control connecting rod, and the grinding device is lifted to grind the cut after cutting. The length of the control rack can just drive the control turntable to rotate 360 ​​degrees. Since the control turntable can just rotate one circle, the grinding device can be retracted into the cutting workbench after grinding the cut.

[0006] The invention provides an adjustable pipe multi-station cutting device, which specifically comprises: a cutting table; a plurality of clamping seats are bolted and connected to the top surface of the cutting table; a support frame is fixedly connected to the top surface of the cutting table; a mounting slide is slidably connected in the support frame; a plurality of cutting components are arranged in the mounting slide; the plurality of cutting components are respectively aligned with the positions of the plurality of clamping seats; a plurality of fixed slides are fixedly connected in the cutting table; a sliding mounting seat is slidably connected in the plurality of fixed slides; a grinding device is arranged on the top surfaces of the plurality of sliding mounting seats; two connecting slides are symmetrically fixedly connected to the outside of the mounting slide; a control rack is fixedly connected to the bottom end surfaces of the two connecting slides; two fixed vertical plates are symmetrically fixedly connected in the rear part of the cutting table; a transmission shaft is rotatably connected between the two fixed vertical plates; a control gear is rotatably connected to the outer sides of the two fixed vertical plates; the two control gears are respectively aligned with the positions of the two control racks; a plurality of connecting vertical plates are fixedly connected in the cutting table; a control turntable is rotatably connected in the plurality of connecting vertical plates.

[0007] Furthermore, two lifting screws are symmetrically rotatably connected inside the support frame; the mounting slide is threadedly connected to the outside of the two lifting screws; the top ends of the two lifting screws are coaxially fixedly connected to a transmission pulley; the two transmission pulleys are connected by a transmission belt; a control motor is bolted to the right side of the top end of the support frame; and the output shaft of the control motor is coaxially fixedly connected to the right lifting screw.

[0008] Furthermore, a control ratchet is coaxially fixedly connected inside each of the two control gears; two control pawls are symmetrically hingedly connected to the outer side of the transmission shaft; and the two control pawls are respectively meshed with the two control ratchets.

[0009] Furthermore, the outside of the transmission shaft is fixedly connected with multiple sets of first bevel gears; the rear parts of the multiple sets of control dials are coaxially fixedly connected with second bevel gears; and the multiple sets of second bevel gears are respectively meshed with the multiple sets of first bevel gears.

[0010] Furthermore, the front end surfaces of the multiple groups of control turntables are hingedly connected to control connecting rods; the ends of the multiple groups of control connecting rods are respectively hingedly connected to the outside of the multiple groups of sliding mounting seats; the outsides of the multiple groups of sliding mounting seats are provided with self-locking button switches; the multiple groups of self-locking button switches are respectively electrically connected to the multiple groups of grinding devices; multiple groups of auxiliary vertical plates are fixedly connected in the cutting workbench; the rear end surfaces of the multiple groups of auxiliary vertical plates are fixedly connected to opening and closing control cams; the multiple groups of opening and closing control cams are respectively aligned with the positions of the multiple groups of self-locking button switches.

[0011] Furthermore, the bottom end surfaces of multiple groups of grinding devices are fixedly connected to sliding plates; the multiple groups of sliding plates are respectively slidably connected to multiple groups of sliding mounting seats; the front end surfaces of multiple groups of sliding plates are fixedly connected to disc spring groups; the ends of multiple groups of disc spring groups are respectively fixedly connected to multiple groups of sliding mounting seats.

[0012] Furthermore, the upper parts of the multiple groups of clamping seats are rotatably connected to a control rotating rod; the outsides of the multiple groups of control rotating rods are coaxially fixedly connected to a control worm; the upper parts of the multiple groups of clamping seats are rotatably connected to a control worm wheel; and the multiple groups of control worm wheels are respectively meshed with the multiple groups of control worms.

[0013] Furthermore, the lower parts of the multiple groups of control worm gears are coaxially fixedly connected with transmission gears; the outsides of the multiple groups of transmission gears are meshed with a group of transmission racks; the outsides of the multiple groups of transmission racks are fixedly connected with a group of sliding frames; the multiple groups of sliding frames are respectively slidably connected in the multiple groups of clamping seats; the inner sides of the multiple groups of sliding frames are fixedly connected with a group of arc-shaped clamping plates.

[0014] Beneficial Effects After the bicycle frame tube is cut, the cutting assembly is reset. During the movement of the mounting slide, the control rack drives the control gear to rotate, and then a series of transmissions drive the control turntable to rotate. During the rotation of the control turntable, the sliding mounting seat is driven to slide in the fixed slide through the control connecting rod, and the grinding device is lifted to grind the cut. The length of the control rack can just drive the control turntable to rotate 360 ​​degrees, so that the grinding device can be retracted into the cutting workbench after grinding the cut, so that the grinding device automatically grinds the cut of the tube to ensure the flatness of the cut. The operation is simpler and faster, and the practicality of the multi-station cutting device for tubes is effectively improved.

[0015] During the upward movement of the sliding mounting seat, the opening and closing control protrusion presses the self-locking button switch for the first time. Since the self-locking button switch is connected to the driving part of the grinding device to form an opening and closing circuit of the grinding device, the grinding device will start at this time, so that the grinding device can be automatically opened and closed, which effectively improves the convenience of the multi-station cutting device for pipes.

[0016] The setting of the disc spring group will provide pressure compensation for the grinding device, so that the grinding device can better contact with the incision, offset the contact force fluctuation caused by mechanism wear and change in the thickness of the processed material, and at the same time, when the grinding device encounters unexpected resistance (such as workpiece protrusion), elastic deformation is used to avoid mechanism damage, effectively ensuring the burr grinding effect, while also improving the safety of the multi-station pipe cutting device.

[0017] By rotating the control lever, the control lever drives the control worm to rotate, and then a series of transmissions are used to drive the sliding frame to slide in the clamping seat. The spacing of the arc-shaped clamping plates is adjusted by the sliding of the sliding frame, which facilitates the positioning of bicycle frame pipes of different thicknesses. Through the arrangement of multiple cutting components and clamping seats, the bicycle frame pipes can be cut in multiple positions, which effectively improves the versatility of the multi-position cutting device. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] In order to more clearly illustrate the technical solution of the embodiment of the present invention, the drawings of the embodiment are briefly introduced below.

[0019] The drawings described below are only related to some embodiments of the present invention, but are not intended to limit the present invention.

[0020] In the attached picture: Figure 1 It is an axonometric structural schematic diagram of the present invention.

[0021] Figure 2 It is a cross-sectional structural schematic diagram of the present invention.

[0022] Figure 3 The present invention Figure 2 A is an enlarged structural diagram of FIG.

[0023] Figure 4 It is a schematic cross-sectional structural diagram of the clamping seat of the present invention.

[0024] Figure 5 It is a schematic diagram of the axonometric structure of the transmission gear of the present invention.

[0025] Figure 6 It is a schematic diagram of the axonometric structure of the control rack of the present invention.

[0026] Figure 7 It is a schematic diagram of the axonometric structure of the transmission shaft of the present invention.

[0027] Figure 8 The present invention Figure 7 Schematic diagram of the enlarged structure at B.

[0028] Fig. 9 The present invention Figure 7 Enlarged structural diagram at C.

[0029] Fig.10 This is a schematic diagram of the axonometric structure of the opening and closing control convex rod of the present invention. Fig.11 It is a cross-sectional structural schematic diagram of the sliding mounting seat of the present invention Reference numerals list 1. Cutting table; 101. Support frame; 102. Mounting slide; 103. Cutting assembly; 104. Lifting screw; 105. Driving pulley; 106. Control motor; 107. Clamping seat; 108. Control rotating rod; 109. Control worm; 110. Control worm wheel; 111. Driving gear; 112. Arc clamping plate; 113. Sliding frame; 114. Driving rack; 115. Connecting slide; 116. Control rack; 117. Fixed vertical plate; 1 18. Transmission shaft; 119. Control pawl; 120. Control ratchet; 121. Control gear; 122. First bevel gear; 123. Connecting plate; 124. Control turntable; 125. Second bevel gear; 126. Fixed slide; 127. Sliding mounting seat; 128. Self-locking push button switch; 129. Control connecting rod; 130. Auxiliary plate; 131. Opening and closing control cam; 132. Grinding device; 133. Sliding plate; 134. Disc spring assembly. DETAILED DESCRIPTION

[0030] Embodiment 1: The present invention provides an adjustable multi-station pipe cutting device, please refer to Figures 1 to 11 As shown, it includes: a cutting workbench 1; The top surface of the cutting table 1 is bolted and connected with multiple groups of clamping seats 107; the top surface of the cutting table 1 is fixedly connected with a support frame 101; a mounting slide 102 is slidably connected in the support frame 101; multiple groups of cutting components 103 are arranged in the mounting slide 102; the multiple groups of cutting components 103 are respectively aligned with the positions of the multiple groups of clamping seats 107; multiple groups of fixed slides 126 are fixedly connected in the cutting table 1; the multiple groups of fixed slides 126 are slidably connected with sliding mounting seats 127; the top surfaces of the multiple groups of sliding mounting seats 127 are all provided with grinding devices 132; the external alignment of the mounting slide 102 Two connecting slides 115 are fixedly connected; the bottom end surfaces of the two connecting slides 115 are fixedly connected to a control rack 116; two fixed vertical plates 117 are symmetrically fixedly connected in the rear part of the cutting workbench 1; a transmission shaft 118 is rotatably connected between the two fixed vertical plates 117; the outer sides of the two fixed vertical plates 117 are rotatably connected to a control gear 121; the two control gears 121 are respectively aligned with the positions of the two control racks 116; multiple groups of connecting vertical plates 123 are fixedly connected in the cutting workbench 1; control turntables 124 are rotatably connected in the multiple groups of connecting vertical plates 123.

[0031] Among them, two lifting screws 104 are symmetrically rotatably connected inside the support frame 101; the mounting slide 102 is threadedly connected to the outside of the two lifting screws 104; the top ends of the two lifting screws 104 are coaxially fixedly connected with a transmission pulley 105; the two transmission pulleys 105 are connected by a transmission belt; a control motor 106 is bolted and fastened to the right side of the top end of the support frame 101; the output shaft of the control motor 106 is coaxially fixedly connected to the right lifting screw 104.

[0032] Among them, a control ratchet 120 is coaxially fixedly connected inside each of the two control gears 121; two control pawls 119 are symmetrically hingedly connected to the outer side of the transmission shaft 118; and the two control pawls 119 are respectively meshed with the two control ratchets 120.

[0033] The transmission shaft 118 is externally fixedly connected with a plurality of first bevel gears 122 ; the rear of the plurality of control dials 124 are coaxially fixedly connected with a second bevel gear 125 ; the plurality of second bevel gears 125 are respectively meshed with the plurality of first bevel gears 122 .

[0034] Among them, the front end surfaces of multiple groups of control turntables 124 are hingedly connected to control connecting rods 129; the ends of multiple groups of control connecting rods 129 are hingedly connected to the outside of multiple groups of sliding mounting seats 127; the outsides of multiple groups of sliding mounting seats 127 are provided with self-locking button switches 128; multiple groups of self-locking button switches 128 are electrically connected to multiple groups of grinding devices 132 respectively; multiple groups of auxiliary vertical plates 130 are fixedly connected inside the cutting workbench 1; the rear end surfaces of multiple groups of auxiliary vertical plates 130 are fixedly connected to opening and closing control protrusions 131; multiple groups of opening and closing control protrusions 131 are aligned with the positions of multiple groups of self-locking button switches 128 respectively.

[0035] Among them, the bottom end surfaces of multiple groups of grinding devices 132 are fixedly connected with sliding plates 133; multiple groups of sliding plates 133 are respectively slidably connected to multiple groups of sliding mounting seats 127; the front end surfaces of multiple groups of sliding plates 133 are fixedly connected with disc spring groups 134; the ends of multiple groups of disc spring groups 134 are respectively fixedly connected in multiple groups of sliding mounting seats 127.

[0036] Specific usage and function of this embodiment: In the present invention, during the process of cutting the bicycle frame pipe, the control motor 106 is started to drive the control motor 106 to drive the right lifting screw 104 to rotate. During the rotation of the right lifting screw 104, the right transmission pulley 105 causes the left transmission pulley 105 to rotate through the transmission belt. As the two transmission pulleys 105 rotate, the left lifting screw 104 is driven to rotate, and then the two lifting screws 104 are rotated at the same time. As the lifting screw 104 rotates, the mounting slide 102 is driven. As the mounting slide 102 approaches the fixed pipe, the bicycle frame pipe is cut by starting the cutting assembly 103. When the mounting slide 102 moves During the process, the connecting slide 115 will be driven to move, and the movement of the connecting slide 115 will drive the control rack 116 to move, and the movement of the control rack 116 will cause the control rack 116 to slowly mesh with the control gear 121. At this time, as the control rack 116 continues to move, the control gear 121 will be driven to rotate. In the process of rotation of the control gear 121, the one-way movement between the control pawl 119 and the control ratchet 120 is controlled, so that when the mounting slide 102 moves downward, the rotation of the control gear 121 will not drive the transmission shaft 118 to rotate. After the cutting is completed, when the cutting assembly 103 is reset, as the mounting slide 102 moves upward, the control rack 116 drives the control gear 121 to rotate. The wheel 121 rotates in the opposite direction. At this time, the rotation of the control gear 121 drives the transmission shaft 118 to rotate. During the rotation of the transmission shaft 118, the first bevel gear 122 is driven to rotate. As the first bevel gear 122 rotates, the second bevel gear 125 meshing therewith is driven to rotate. As the second bevel gear 125 rotates, the control turntable 124 is driven to rotate. During the rotation of the control turntable 124, the sliding mounting seat 127 is driven to slide in the fixed slide 126 through the control connecting rod 129, and the grinding device 132 is lifted to grind the cut after cutting. The length of the control rack 116 can just drive the control turntable 124 to rotate 360 ​​degrees. Specifically, by calculating the control rack 116 and the control rack 116, the rotation of the control turntable 124 is realized. The module of the control gear 121 realizes the control dial 124 to rotate 360 ​​degrees. Since this method is a technical means commonly used by technical personnel in this field, it will not be described in detail here. Since the control dial 124 can just rotate one circle, the grinding device 132 will be retracted into the cutting workbench 1 after grinding the incision. During the upward movement of the sliding mounting seat 127, the opening and closing control protrusion 131 presses the self-locking button switch 128 for the first time. Since the self-locking button switch 128 is connected to the driving part of the grinding device 132 to form an opening and closing circuit of the grinding device 132, the grinding device 132 will start at this time. During the downward movement of the sliding mounting seat 127, the opening and closing control protrusion 131 presses the self-locking button switch 128 for the second time.The grinding device 132 is closed, and the disc spring group 134 provides pressure compensation for the grinding device 132, so that the grinding device 132 can better contact the incision.

[0037] Embodiment 2: Based on Example 1, please refer to Figures 1 to 5 As shown, it includes: a control rotating rod 108, a control worm 109, a control worm wheel 110, a transmission gear 111 and an arc-shaped clamping plate 112, and the upper parts of multiple groups of clamping seats 107 are rotatably connected to a control rotating rod 108; the outer parts of multiple groups of control rotating rods 108 are coaxially fixedly connected to the control worm 109; the upper parts of multiple groups of clamping seats 107 are rotatably connected to the control worm wheels 110; and the multiple groups of control worm wheels 110 are respectively meshed with the multiple groups of control worms 109.

[0038] Among them, the lower parts of multiple groups of control worm gears 110 are coaxially fixedly connected with transmission gears 111; the outsides of multiple groups of transmission gears 111 are meshed with a group of transmission racks 114; the outsides of multiple groups of transmission racks 114 are fixedly connected with a group of sliding frames 113; the multiple groups of sliding frames 113 are respectively slidably connected in multiple groups of clamping seats 107; the inner sides of multiple groups of sliding frames 113 are fixedly connected with a group of arc-shaped clamping plates 112.

[0039] Specific usage and function of this embodiment: In the present invention, by rotating the control lever 108, the control lever 108 drives the control worm 109 to rotate, and as the control worm 109 rotates, the control worm wheel 110 meshing with it will be driven to rotate, and as the control worm wheel 110 rotates, the transmission gear 111 will be driven to rotate, and as the transmission gear 111 rotates, the transmission rack 114 meshing with it will be driven to move, and as the transmission rack 114 moves, the sliding frame 113 will be driven to slide in the clamping seat 107, and the spacing of the arc-shaped clamping plate 112 can be adjusted by sliding the sliding frame 113, so as to facilitate the positioning of bicycle frame pipes of different thicknesses, and the arrangement of multiple cutting components 103 and the clamping seat 107 can perform multi-station cutting on the bicycle frame pipe.

[0040] In this article, there are a few points to note: 1. The drawings of the embodiments of the present disclosure only involve structures related to the embodiments of the present disclosure, and other structures may refer to general designs.

[0041] 2. In the absence of conflict, the embodiments of the present disclosure and the features therein may be combined with each other to obtain new embodiments.

[0042] The above are only specific embodiments of the present disclosure, but the protection scope of the present disclosure is not limited thereto. Any technician familiar with the technical field can easily think of changes or substitutions within the technical scope disclosed in the present disclosure, which should be included in the protection scope of the present disclosure. Therefore, the protection scope of the present disclosure should be based on the protection scope of the claims.

Claims

1. An adjustable multi-station pipe cutting device, comprising: A cutting workbench (1); the top surface of the cutting workbench (1) is bolt-fastened with a plurality of clamping seats (107); the top surface of the cutting workbench (1) is fixedly connected to a support frame (101); a mounting slide (102) is slidably connected inside the support frame (101); a plurality of cutting components (103) are arranged inside the mounting slide (102); the plurality of cutting components (103) are respectively aligned with the positions of the plurality of clamping seats (107); the cutting workbench (1) is characterized in that a plurality of fixed slides (126) are fixedly connected inside; a plurality of fixed slides (126) are slidably connected to a sliding mounting seat (127); the top surfaces of the plurality of sliding mounting seats (127) are each provided with a grinding device (132); the mounting The outside of the mounting slide (102) is symmetrically fixedly connected to two connecting slides (115); the bottom end surfaces of the two connecting slides (115) are fixedly connected to a control rack (116); the rear part of the cutting workbench (1) is symmetrically fixedly connected to two fixed vertical plates (117); a transmission shaft (118) is rotatably connected between the two fixed vertical plates (117); the outer sides of the two fixed vertical plates (117) are rotatably connected to a control gear (121); the two control gears (121) are respectively aligned with the positions of the two control racks (116); multiple groups of connecting vertical plates (123) are fixedly connected inside the cutting workbench (1); and the multiple groups of connecting vertical plates (123) are rotatably connected to control turntables (124).

2. The adjustable multi-station pipe cutting device according to claim 1, characterized in that: Two lifting screws (104) are symmetrically rotatably connected inside the support frame (101); the mounting slide (102) is threadedly connected to the outside of the two lifting screws (104); the top ends of the two lifting screws (104) are coaxially fixedly connected to a transmission pulley (105); the two transmission pulleys (105) are connected via a transmission belt; a control motor (106) is boltedly connected to the right side of the top end of the support frame (101); and the output shaft of the control motor (106) is coaxially fixedly connected to the right lifting screw (104).

3. The adjustable multi-station pipe cutting device according to claim 1, characterized in that: A control ratchet (120) is coaxially fixedly connected inside each of the two control gears (121); two control pawls (119) are symmetrically hingedly connected to the outside of the transmission shaft (118); and the two control pawls (119) are respectively meshed with the two control ratchets (120).

4. The adjustable multi-station pipe cutting device according to claim 1, characterized in that: The outside of the transmission shaft (118) is fixedly connected to a plurality of first bevel gears (122); the rear parts of the plurality of control dials (124) are coaxially fixedly connected to second bevel gears (125); and the plurality of second bevel gears (125) are respectively meshed with the plurality of first bevel gears (122).

5. The adjustable multi-station pipe cutting device according to claim 1, characterized in that: The front end surfaces of the plurality of control turntables (124) are hingedly connected to control connecting rods (129); the ends of the plurality of control connecting rods (129) are hingedly connected to the outside of the plurality of sliding mounting seats (127); the outside of the plurality of sliding mounting seats (127) are provided with self-locking button switches (128); the plurality of self-locking button switches (128) are electrically connected to the plurality of grinding devices (132); the cutting workbench (1) is fixedly connected with a plurality of auxiliary vertical plates (130); the rear end surfaces of the plurality of auxiliary vertical plates (130) are fixedly connected with opening and closing control protruding rods (131); the plurality of opening and closing control protruding rods (131) are aligned with the positions of the plurality of self-locking button switches (128).

6. The adjustable multi-station pipe cutting device according to claim 1, characterized in that: The bottom end surfaces of the multiple groups of grinding devices (132) are all fixedly connected to sliding plates (133); the multiple groups of sliding plates (133) are respectively slidably connected to the multiple groups of sliding mounting seats (127); the front end surfaces of the multiple groups of sliding plates (133) are all fixedly connected to disc spring groups (134); and the ends of the multiple groups of disc spring groups (134) are respectively fixedly connected to the multiple groups of sliding mounting seats (127).

7. The adjustable multi-station pipe cutting device according to claim 1, characterized in that: The upper parts of the multiple groups of clamping seats (107) are all rotatably connected to a control rotating rod (108); the outer parts of the multiple groups of control rotating rods (108) are all coaxially fixedly connected to a control worm (109); the upper parts of the multiple groups of clamping seats (107) are all rotatably connected to a control worm wheel (110); and the multiple groups of control worm wheels (110) are respectively meshed with the multiple groups of control worm wheels (109).

8. An adjustable multi-station pipe cutting device as claimed in claim 7, characterized in that: The lower parts of the multiple groups of control worm gears (110) are coaxially fixedly connected with a transmission gear (111); the outer parts of the multiple groups of transmission gears (111) are meshed with a group of transmission racks (114); the outer parts of the multiple groups of transmission racks (114) are fixedly connected with a group of sliding frames (113); the multiple groups of sliding frames (113) are respectively slidably connected in the multiple groups of clamping seats (107); and the inner sides of the multiple groups of sliding frames (113) are fixedly connected with a group of arc-shaped clamping plates (112).

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