CN115958236A

CN115958236A - Pipeline cutting machine

Info

Publication number: CN115958236A
Application number: CN202110604826.9A
Authority: CN
Inventors: 郝敬冬; 付祥青
Original assignee: Nanjing Chervon Industry Co Ltd
Current assignee: Nanjing Chervon Industry Co Ltd
Priority date: 2021-05-31
Filing date: 2021-05-31
Publication date: 2023-04-14

Abstract

The invention discloses a pipeline cutting machine, comprising: a housing and a motor; the transmission assembly is connected with the motor; the rotating assembly is connected with the transmission assembly and can rotate under the driving of the motor; the first bracket component and the second bracket component are arranged on the rotating component; the second bracket component comprises a first elastic piece which can enable the second bracket component to approach the first bracket component; the locking block is arranged on the rotating assembly and can linearly slide along the radial direction of the rotating assembly, and the locking block can lock the second bracket assembly when sliding; the locking block push plate is located in the circumferential direction of the rotating assembly, the locking block can be in contact with the locking block push plate when the locking block rotates along with the rotating assembly, and the locking block push plate at least comprises a first part far away from the center of the rotating assembly and a second part close to the center of the rotating assembly so as to push the locking block to slide towards the center of the rotating assembly. The pipeline cutting machine can effectively lock the first bracket component and the second bracket component, and is simple in structure and low in cost.

Description

Pipeline cutting machine

Technical Field

The invention relates to an electric tool, in particular to a pipeline cutting machine.

Background

A pipe cutter is a kind of electric tool for cutting a pipe. The pipe cutting machine comprises an upper bracket component and a lower bracket component, wherein during cutting, a pipe is clamped between the upper bracket component and the lower bracket component, a cutting blade is installed on the upper bracket component, and the upper bracket component and the lower bracket component rotate under the driving of a motor to cut the pipe. In order to facilitate the pipeline to be arranged between the upper bracket component and the lower bracket component, the two bracket components need to be arranged to move relatively, and meanwhile, when the pipeline is cut, the upper bracket component and the lower bracket component need to be locked, so that the bracket components are prevented from being mutually far away under the propping of the pipeline, and the pipeline cannot be compressed to finish the cutting. That is, it is necessary to provide a locking structure capable of locking between the two carriage assemblies at the time of cutting. In the prior art, the locking structure for locking the two bracket assemblies is complex, high in manufacturing difficulty, high in manufacturing cost, high in assembly difficulty and poor in reliability.

Accordingly, the prior art is yet to be improved and developed.

Disclosure of Invention

In order to solve the defects of the prior art, the invention provides the pipeline cutting machine, and the locking structure for locking the two bracket assemblies on the pipeline cutting machine is simple, the cost is lower, the assembly is convenient and the reliability is higher.

In order to achieve the above object, the present invention adopts the following technical solutions: a pipe cutting machine comprising: the motor comprises a shell and a motor arranged in the shell; the transmission assembly is connected with the motor; the rotating assembly is connected with the transmission assembly and can rotate around a first axis under the driving of the motor; the first bracket component and the second bracket component are arranged on the rotating component, and a cutting area is formed between the first bracket component and the second bracket component; the second bracket component comprises a first elastic member, and the first elastic member can enable the second bracket component to approach the first bracket component; further comprising: the locking block is arranged on the rotating assembly and can linearly slide along the radial direction of the rotating assembly, and the second bracket assembly can be locked when the locking block slides; the locking piece push pedal is located in the casing and be located runner assembly's circumference the locking piece is followed the runner assembly pivoted in-process, the locking piece can with the contact of locking piece push pedal, just the locking piece push pedal includes at least that more keeps away from the first part at runner assembly center and being closer to the second part at runner assembly center is in order to promote the locking piece to runner assembly's center slides.

Optionally, the pipe cutter further includes:

the top rod is arranged on the rotating assembly in a sliding mode and provided with a first end and a second end, and when the locking block slides along the radial direction of the rotating assembly, the locking block can be abutted against the first end of the top rod and can push the top rod to slide;

the lockplate, be provided with the locking lever on the second bracket component, the locking lever along with the radial vertically direction of runner assembly extends, the lockplate cover is located on the locking lever, when the ejector pin slides, the ejector pin the second end can with the lockplate butt, in order to promote lockplate to the lopsidedness, makes the lockplate will second bracket component locking.

Optionally, a first inclined surface is arranged at one end of the locking block, which is abutted to the ejector rod, and a second inclined surface used for being matched with the first inclined surface is arranged at the first end of the ejector rod.

Optionally, the first bracket assembly comprises:

the mounting shaft is arranged on the rotating assembly in a sliding manner;

a reed, one end of which is connected to the mounting shaft;

the cutting piece is arranged at the other end of the reed;

wherein, the locking piece is when following rotating assembly's radial slip, the locking piece promotes the ejector pin will after the locking of second bracket component, the locking piece can also promote the installation axle slides, so that the installation axle drives the cutting piece moves to the direction that is close to second bracket component.

Optionally, the installation epaxial cover is equipped with the cylinder, the locking block with the one end of installation axle contact is provided with the third inclined plane, the locking block promotes during the installation axle, the third inclined plane with the cylinder butt.

Optionally, two grooves are formed in one side of the locking block, the two grooves are distributed on the locking block along the radial direction of the rotating assembly, a second elastic piece is arranged on the rotating assembly, one end of the second elastic piece is fixed on the rotating assembly, and a ball is arranged at the other end of the second elastic piece;

when the locking block is in an initial position where the locking block does not slide towards the center of the rotating assembly, the ball is matched in the groove far away from the center of the rotating assembly in the two grooves; when the locking block slides to the center of the rotating assembly to lock the second bracket assembly and pull the cutting blade to the direction close to the second bracket assembly, the ball is matched in the groove which is closer to the center of the rotating assembly in the two grooves.

Optionally, one end of the locking block, which is in contact with the locking block push plate, is provided with a roller.

Optionally, the transmission assembly includes:

the driving bevel gear is arranged at the end part of a motor shaft of the motor and can rotate around a second axis under the driving of the motor shaft, and the second axis is vertical to the first axis;

the driven bevel gear is meshed with the driving bevel gear and driven by the driving bevel gear to rotate around the first axis;

the rotating shaft is connected with the driven bevel gear;

a reduction gear set connected to the rotation shaft to reduce the rotation output from the rotation shaft;

the rotating assembly comprises a rotating gear, and the rotating gear is meshed with the reduction gear set.

Optionally, the pipe cutter further includes:

a clutch assembly, said clutch assembly comprising:

the first clutch piece is arranged at one end of the rotating shaft connected with the driven bevel gear;

the second clutch piece is arranged on the driven bevel gear;

the third elastic piece is sleeved on the rotating shaft and can enable the first clutch piece to approach the second clutch piece;

the first clutch piece is matched with the second clutch piece, a groove is formed in the matching surface of the first clutch piece, a boss is arranged on the matching surface of the second clutch piece, the boss is inserted into the groove under the action of the third elastic piece, and one end face of the boss is a vertical face and the other end face of the boss is an inclined face in the two end faces in the circumferential direction of the second clutch piece; in the two end faces of the groove along the circumferential direction of the first clutch piece, the end face corresponding to the vertical face of the boss is a vertical face, and the end face corresponding to the inclined face of the boss is an inclined face or a vertical face.

Optionally, the pipe cutter further includes:

the limiting plate is arranged in the shell and positioned in the circumferential direction of the rotating assembly and used for limiting the rotating assembly to continuously move along the resetting direction when the rotating assembly is at the initial position; the edge of runner assembly is provided with the dog, when runner assembly rotated along the direction that resets, the dog can with the limiting plate butt, in order with the runner assembly restriction is at initial position.

Optionally, a contact surface of the locking block push plate contacting the locking block is a curved surface, the curved surface includes a first curved surface section and a second curved surface section, and the first curved surface section and the second curved surface are the first portion and the second portion, respectively.

The invention has the advantages that: in the pipeline cutting machine, the rotating assembly is provided with the locking block which can linearly slide along the radial direction of the rotating assembly, the locking block push plate is arranged on the circumference of the rotating assembly, when the locking block rotates along with the rotating assembly, the locking block can be in contact with the locking block push plate, the locking block moves along the inner side wall of the locking block push plate, the locking block push plate at least comprises a first part far away from the center of the rotating assembly and a second part close to the center of the rotating assembly, so that the locking block push plate pushes the locking block to slide towards the center of the rotating assembly when the locking block moves along the inner wall of the locking block push plate, the second bracket assembly is locked, locking between the second bracket assembly and the first bracket assembly is realized, the first bracket assembly and the second bracket assembly clamp a pipeline, and cutting is finished. The locking structure is simple, locking can be completed only through the matching of the locking block and the locking block push plate, the cost is low, the assembly is simple, and meanwhile, the locking reliability is high.

Drawings

FIG. 1 is a perspective view of a pipe cutter according to the present application;

FIG. 2 is a schematic view of the internal structure of the pipe cutter of the present application;

FIG. 3 is an exploded schematic view of the structure shown in FIG. 2;

FIG. 4 is a schematic view of a portion of the pipe cutter of the present application;

FIG. 5 is a schematic view of the structure of FIG. 4 from another perspective;

FIG. 6 is a schematic view of the structure of the rotating assembly of FIG. 4 with portions broken away;

figure 7 is a schematic view of the structure of figure 6 with portions of the spring removed;

FIG. 8 is a block diagram of the structure of FIG. 7 as installed into a pipe to be cut;

FIG. 9 is a block diagram of the structure of FIG. 7 as it cuts a pipe to be cut;

FIG. 10 is a schematic view of another part of the pipe cutter of the present application;

FIG. 11 is a schematic view of the structure of FIG. 10 from another perspective;

FIG. 12 is a schematic view of another part of the pipe cutter of the present application;

fig. 13 is a schematic view of the structure shown in fig. 11 from another perspective.

Detailed Description

The invention is described in detail below with reference to the figures and the embodiments.

As shown in fig. 1 to 3, the pipe cutter 100 of the present invention includes a housing 110, a motor 111, a transmission assembly 120, a rotation assembly 130, a first bracket assembly 140, and a second bracket assembly 150. The motor 111 is arranged in the casing 110, the front end of the casing 110 is the head of the pipe cutter 100, the middle part of the casing 110 is a handle part for a user to hold, a press switch 112 penetrates through the handle part, the press switch 112 is used for controlling the working state of the motor, the rear end of the casing 110 is provided with a battery pack 113, and the battery pack 113 is used for supplying power to the motor 111. The transmission assembly 120 is connected with the motor 111 for transmitting the torque of the motor 111. The rotating assembly 130 is connected to the transmission assembly 120, as shown in fig. 4, and the rotating assembly 130 can rotate around the first axis 101 under the driving of the motor 111. The first bracket assembly 140 and the second bracket assembly 150 are disposed on the rotating assembly 130, a cutting area is formed between the first bracket assembly 140 and the second bracket assembly 150, as shown in fig. 8, the pipe 104 to be cut is placed in the cutting area, the first bracket assembly 140 and the second bracket assembly 150 clamp the pipe 104, and the rotating assembly 130 drives the first bracket assembly 140 and the second bracket assembly 150 to rotate to cut the pipe 104. The first bracket assembly 140 has a cutting blade 143 mounted thereon to cut the pipe 104. It will be appreciated that a resilient member may be required to allow the first bracket assembly 140 and the second bracket assembly 150 to be brought into proximity to each other to clamp the conduit 104. As shown in fig. 6, the second bracket assembly 150 includes a first elastic member 151, the first elastic member 151 enables the second bracket assembly 150 to approach the first bracket assembly 140, and the first elastic member 151 may be a spring. When the pipe 104 is loaded, the pipe 104 presses the first bracket component 140 downwards, the first elastic member 151 is compressed, and after the pipe 104 is loaded between the first bracket component 140 and the second bracket component 150, the second bracket component 150 approaches the first bracket component 140 under the action of the first elastic member 151 so as to clamp the pipe 104.

In the present invention, as shown in fig. 6, the pipe cutter 100 further includes a locking block 161 and a locking block push plate 162. The locking block 161 is disposed on the rotating assembly 130, the locking block 161 can slide linearly on the rotating assembly 130 along a radial direction of the rotating assembly 130, that is, the locking block 161 is slidably connected to the rotating assembly 130, the locking block 161 slides along the radial direction of the rotating assembly 130 under the pushing of the locking block pushing plate 162 while rotating along with the rotating assembly 130, and the locking block 161 can lock the second bracket assembly 150 when sliding along the radial direction of the rotating assembly 130. There are many specific locking ways, for example, a jack may be provided on the second bracket assembly 150, the locking block 161 is inserted into the jack for locking, or other linkage mechanisms are driven by the sliding of the locking block 161 to lock the second bracket assembly 150, which is not limited herein. The locking block pushing plate 162 is disposed in the casing 110 and located in the circumferential direction of the rotating assembly 130, and in the process that the locking block 161 rotates along with the rotating assembly 130, the locking block 161 can contact the locking block pushing plate 162 and move along the inner wall of the locking block pushing plate 162. As shown in fig. 8 and 9, the lock block pushing plate 162 comprises at least a first portion 1621 farther from the center of the rotating assembly 130 and a second portion 1622 closer to the center of the rotating assembly 130, and when the lock block 161 moves along the inner wall of the lock block pushing plate 162, the first portion 1621 of the lock block pushing plate 162 moves to the second portion 1622, and is pushed to slide toward the center of the rotating assembly 130, so that the lock block 161 slides along the radial direction of the rotating assembly 130.

In an embodiment, as shown in fig. 6, a contact surface of the locking block pushing plate 162 contacting the locking block 161 is a curved surface, and the curved surface includes a first curved surface section and a second curved surface section sequentially arranged along the circumferential direction of the rotating assembly 130, and referring to fig. 8 and 9, the first curved surface section and the second curved surface are a first portion 1621 and a second portion 1622, respectively. During the movement of the locking block 161 along the curved surface of the locking block pushing plate 162, the locking block 161 is gradually moved from the first curved surface segment to the second curved surface segment, so that the locking block 161 is gradually pushed toward the center of the rotating assembly 130 along the radial direction of the rotating assembly 130. Providing a curved surface on the locking block push plate 162 to contact the locking block 161 makes the movement of the locking block 161 smoother.

Further, as shown in fig. 8, a roller 1614 is disposed at one end of the locking block 161 contacting the locking block pushing plate 162, and the roller 1614 rolls on the locking block pushing plate 162, so that the friction between the locking block 161 and the locking block pushing plate 162 is reduced, the locking block 161 moves more smoothly along the locking block pushing plate 162, and the cutting operation is completed more smoothly.

Referring to fig. 7 and 8, in an embodiment, the pipe cutting machine further includes a ram 163 and a locking plate 164. The locking of the second bracket assembly 150 by the locking block 161 can be realized by the push rod 163 and the locking plate 164, and the second bracket assembly 150 is locked by the locking block 161 carrying the push rod 163 and the locking plate 164. Specifically, the push rod 163 is slidably disposed on the rotating assembly 130, and the sliding direction may be perpendicular to the sliding direction of the locking block 161, i.e. perpendicular to the radial direction of the rotating assembly 130. As shown in fig. 8, when the locking block 161 slides in the radial direction of the rotating assembly 130, the push rod 163 can be pushed to slide by abutting against the first end of the push rod 163, the second end of the push rod 163 abuts against the locking plate 164, and the push rod 163 further pushes the locking plate 164 to lock the second bracket assembly 150. The second bracket assembly 150 is provided with a locking rod 152, the locking rod 152 extends along a direction perpendicular to the radial direction of the rotating assembly 130, the locking plate 164 is sleeved on the locking rod 152, when the push rod 163 is pushed by the locking block 161 to slide, the second end of the push rod 163 can abut against the locking plate 164, as shown in fig. 9, the locking plate 164 inclines to one side under the pushing of the push rod 163, so that the locking plate 164 locks the second bracket assembly 150. As shown in fig. 10, the locking rod 152 is provided with a serrated latch on one side thereof, and the locking plate 164 can be latched on the latch when inclined, so that the second bracket assembly 150 cannot move on the rotating assembly 130, and the second bracket assembly 150 is fixed relative to the first bracket assembly 140, thereby locking the second bracket assembly 150. As shown in fig. 10, in order to ensure the stability of the movement of the second bracket assembly 150 and prevent the second bracket assembly 150 from transiting to the first bracket assembly 140, a fourth elastic member 153 is further provided, and the fourth elastic member 153 is disposed at an end of the second bracket assembly 150 opposite to the first elastic member 151. The fourth elastic element 153 may be a spring, and preferably, as shown in fig. 10, the fourth elastic element 153 is sleeved on the locking rod 152. The first elastic member 151 and the fourth elastic member 153 each have one end abutting against the rotating assembly 130 and the other end abutting against the second bracket assembly 150.

In order to make it easier for the lock block 161 to push the jack 163, as shown in fig. 10, one end of the lock block 161 abutting against the jack 163 is provided with a first inclined surface 1611, and as shown in fig. 11, the first end of the jack 163 is provided with a second inclined surface 1631 for engaging with the first inclined surface 1611. Referring to fig. 8, 10 and 11, when the locking block 161 slides toward the center of the rotating assembly 130, the first inclined surface 1611 at one end of the locking block 161 pushes the second inclined surface 1631 of the push rod 163, so as to push the work push rod 163 to slide upward, and the push rod 163 pushes the locking plate 164 upward to incline the locking plate 164 to one side, thereby locking the second bracket assembly 150. The first inclined surface 1611 and the second inclined surface 1631 are provided to cooperate to facilitate the pushing of the push rod 163 up and down by the radial movement of the locking block 161.

Referring to fig. 8, 10 and 11, the first bracket assembly 140 includes a mounting shaft 141, a spring 142 and a cutting blade 143. The mounting shaft 141 is slidably disposed on the rotating unit 130 in a sliding direction parallel to the sliding direction of the locking lever 152, and the mounting shaft 141 extends in the axial direction of the rotating unit 130. One end of the spring 142 is connected to the mounting shaft 141, and the other end of the spring 142 is provided with a cutting piece 143. Install axle 141 and slide and locate rotating assembly 130 on make installation axle 141 can be pushed down by locking piece 161 to drive reed 142 and cutting piece 143 and be close to pipeline 104, cutting piece 143 compresses tightly pipeline 104, and rotating assembly 130 drives first bracket assembly 140 and wholly rotates simultaneously, realizes the cutting to pipeline 104. When the locking block 161 slides along the radial direction of the rotating assembly 130, the push rod 163 is pushed to move upwards to lock the second bracket assembly 150, the locking block 161 continues to slide along the radial direction of the rotating assembly 130, after the locking block 161 pushes the push rod 163 to lock the second bracket assembly 150, the locking block 161 further pushes the mounting shaft 141 to slide downwards, so that the mounting shaft 141 drives the cutting blade 143 to move towards the direction close to the second bracket assembly 150, the pipeline 104 is compressed, and when the second bracket assembly 150 is locked and the first bracket assembly 140 is pulled downwards to compress the pipeline 104, the second bracket assembly 150 and the first bracket assembly 140 are driven by the rotating assembly 130 to rotate around the first axis 101 at the same time, so that the pipeline 104 is cut.

Referring to fig. 10 and 11, a roller 1411 is sleeved on the mounting shaft 141, a third inclined surface 1612 is disposed at a contact end of the locking block 161 and the mounting shaft 141, and when the locking block 161 pushes the mounting shaft 141, the third inclined surface 1612 abuts against the roller 1411, and pushes the mounting shaft 141 to slide downward by the third inclined surface 1612 pushing the mounting shaft 141 downward against the roller 1411. Referring to fig. 8, 10 and 11, in order to allow the locking block 161 to push the push rod 163 and then the mounting shaft 141, the first inclined surface 1611 engaged with the push rod 163 may be disposed in front of the third inclined surface 1612 engaged with the mounting shaft 141, that is, the first inclined surface 1611 is closer to the center of the rotating assembly 130 than the third inclined surface 1612, so that the locking block 161 first contacts with the push rod 163 to push the push rod 163 and then contacts with the mounting shaft 141 to push the mounting shaft 141 while sliding toward the center of the rotating assembly 130.

Fig. 7 shows an initial position of the pipe cutter 100 when no cutting has been performed, fig. 8 shows a position of the pipe 104 between the first bracket assembly 140 and the second bracket assembly 150 when the rotating assembly 130 has not rotated, and fig. 9 shows a cutting limit position of the pipe cutter 100 when a cutting has been performed. When the pipe cutting machine 100 is used for cutting, as shown in fig. 8, the pipe 104 is firstly clamped into a cutting area between the first bracket assembly 140 and the second bracket assembly 150, and the second bracket assembly 150 presses the pipe 104 under the action of the elastic member; referring to fig. 9, the rotating assembly 130 is driven by the motor 111 to rotate around the first axis 101, and simultaneously drives the first bracket assembly 140, the second bracket assembly 150, the first elastic member 151, the second elastic member 165, the locking block 161, the ejector rod 163 and the locking plate 164 provided thereon to rotate synchronously; when the locking block 161 rotates along with the rotating assembly 130, the outer end of the locking block slides along the inner wall of the locking block pushing plate 162, and since the inner wall of the locking block pushing plate 162 comprises a first part 1621 and a second part 1622 which have different distances from the center of the rotating assembly 130, the locking block 161 can be pushed towards the center of the rotating assembly 130 by the inner wall of the locking block pushing plate 162 when sliding along the inner wall of the locking block pushing plate 162, so that the locking block 161 moves linearly towards the center of the rotating assembly 130 along the radial direction of the rotating assembly 130; in the process that the locking block 161 moves along the radial direction of the rotating assembly 130, the locking block is firstly contacted with the ejector rod 163, the ejector rod 163 is pushed to move upwards to abut against the locking plate 164, the locking plate 164 inclines towards one side, the locking rod 152 is clamped, the second bracket assembly 150 is locked, and the second bracket assembly 150 cannot move relative to the first bracket assembly 140; then the locking block 161 continuously moves and then contacts the mounting shaft 141, the mounting shaft 141 is pushed downwards along with the movement of the locking block 161, the mounting shaft 141 drives the reed 142 and the cutting blade 143 to move downwards together, and the cutting blade 143 presses the pipeline 104 tightly; the cutting blade 143 presses the pipe 104 and rotates along with the rotating assembly 130 to realize cutting. After cutting, the motor 111 rotates reversely to drive the rotating assembly 130 to reset, and then the position shown in fig. 7 is restored.

Referring to fig. 4 and 5, the rotating assembly 130 includes a rotating gear 131, a rotating frame 132, and a cover plate 133. The rotating gear 131 is connected to the transmission assembly 120, so that the transmission assembly 120 transmits the rotation of the motor 111 to the rotating gear 131, and the rotating gear 131 is driven to rotate around the first axis 101. The rotating frame 132 is fixed to the rotating gear 131 to rotate along with the rotating gear 131. As shown in fig. 6, the first bracket assembly 140, the second bracket assembly 150, the first elastic member 151, the second elastic member 165, the locking block 161, the ejector 163, and the locking plate 164 are all mounted on the rotating frame 132. As shown in fig. 4, the cover plate 133 covers the rotating frame 132, so that an accommodating space is formed between the rotating frame 132 and the cover plate 133 to accommodate the first bracket assembly 140, the second bracket assembly 150, the first elastic member 151, the second elastic member 165, the locking block 161, the push rod 163 and the locking plate 164, and the cover plate 133 can protect the above components.

Referring to fig. 10 and 11, one side of the locking block 161 is provided with two grooves 1613, and the two grooves 1613 are distributed on the locking block 161 along the radial direction of the rotating assembly 130. The rotating assembly 130 is provided with a second elastic member 165, one end of the second elastic member 165 is fixed on the rotating assembly 130, and the other end is provided with a ball 166. Specifically, the elastic member 165 is disposed on the cover plate 133, and the elastic member 165 is a spring extending in an axial direction of the rotating assembly 130, and one end of the spring is fixed to an inner side of the cover plate 133. The elastic member 165 can push the balls into the grooves 1613, and can push the balls out of the grooves 1613 due to the relative movement between the locking blocks 161 and the balls when the rotating assembly 130 rotates. When the locking block 161 is in the initial position, i.e. the position shown in fig. 7 and 8, in which it is not slid towards the center of the rotating assembly 130, the balls 166 fit in the grooves 1613 of the two grooves 1613 that are further from the center of the rotating assembly 130; when the lock block 161 is in the extreme position shown in fig. 9, sliding toward the center of the rotating assembly 130 to lock the second carriage assembly 150 and pull the cutting blade 143 toward the second carriage assembly 150, the ball 166 fits in the recess 1613 of the two recesses 1613 that is closer to the center of the rotating assembly 130. The above structure enables the locking block 161 to be locked by the balls 166 at both the initial position and the extreme position, preventing the locking block 161 from being withdrawn.

As described above, the transmission assembly 120 connects the motor 111 and the rotating assembly 130 for transmitting the torque of the motor 111 to the rotating assembly 130. In one embodiment, as shown in fig. 12, the rotation axis of the motor shaft of the motor 111 is a second axis 102, the second axis 102 extends in the front-back direction, the rotating assembly 130 rotates around the first axis 101, and the first axis 101 extends in the left-right direction, it can be understood that the first axis 101 and the second axis 102 are perpendicular to each other. That is, the direction change is performed by the transmission assembly 120, the rotation of the motor shaft is converted into a direction, and the rotation around the first axis 101 is converted into the rotation around the second axis 102, which is advantageous to install the motor 111 by fully utilizing the space in the length direction of the pipe cutting machine 100.

Specifically, referring to fig. 5, 12 and 13, the transmission assembly 120 includes a driving bevel gear 121, a driven bevel gear 122, a rotating shaft 123 and a reduction gear set 124. The driving bevel gear 121 is disposed at an end of a motor shaft of the motor 111 and can rotate around the second axis 102 under the driving of the motor shaft. The driven bevel gear 122 is meshed with the driving bevel gear 121, the driven bevel gear 122 is driven by the driving bevel gear 121 to rotate around the first axis 101, and rotation reversing is achieved through meshing of the driving bevel gear 121 and the driven bevel gear 122. The rotating shaft 123 is connected with the driven bevel gear 122 and rotates synchronously with the driven bevel gear 122. The reduction gear set 124 is connected to the rotation shaft 123 to reduce the speed of the rotation output from the rotation shaft 123 and transmit the reduced speed to the rotation assembly 130, and the rotation gear 131 of the rotation assembly 130 is engaged with the reduction gear set 124.

In one embodiment, as shown in fig. 12 and 13, the pipe cutting machine further includes a clutch assembly 170, and the clutch assembly 170 can disconnect the motor 111 from the rotating assembly 130 after the pipe cutting machine 100 is reset, so as to prevent overload during the reset. Specifically, as shown in fig. 12 and 13, the clutch assembly 170 includes a first clutch member 171, a second clutch member 172, and a third elastic member 173. The first clutch member 171 is arranged on the rotating shaft 123 and is arranged at one end of the rotating shaft 123 connected with the driven bevel gear 122, the second clutch member 172 is arranged on the driven bevel gear 122, the first clutch member 171 is matched with the second clutch member 172 to realize the connection of the rotating shaft 123 and the driven bevel gear 122, when the first clutch member 171 is separated from the second clutch member 172, the rotating shaft 123 is also disconnected from the driven bevel gear 122, so that the connection between the motor 111 and the rotating assembly 130 is cut off, and the clutch function is realized. The third elastic member 173 is sleeved on the rotation shaft 123, and the third elastic member 173 enables the first clutch member 171 to approach the second clutch member 172, so as to tightly press the first clutch member 171 against the second clutch member 172. As shown in fig. 12, a groove 1711 is provided on a mating surface of the first clutch member 171 and the second clutch member 172, a boss 1721 is provided on a mating surface of the second clutch member 172 and the first clutch member 171, the boss 1721 is inserted into the groove 1711 under the action of the third elastic member 173, and the boss 1721 has two end surfaces along the circumferential direction of the second clutch member 172, one of the end surfaces is a vertical surface, and the other end surface is an inclined surface. The groove 1711 has two end surfaces in the circumferential direction of the first clutch member 171, and of the two end surfaces, the end surface corresponding to the vertical surface of the boss 1721 is a vertical surface, and the end surface corresponding to the inclined surface of the boss 1721 is an inclined surface or a vertical surface (an inclined surface is used in this embodiment). As shown in fig. 13, when the driven bevel teeth 122 rotate in the cutting direction, the engaging surfaces of the first clutch member 171 and the second clutch member 172 are perpendicular, and no force is generated on the engaging surfaces in the axial direction of the rotation shaft 123, and even if a load becomes large, the first clutch member 171 and the second clutch member 172 do not disengage; as shown in fig. 12, when the driven bevel gear 122 rotates in the reset direction, the engaging surfaces of the first clutch member 171 and the second clutch member 172 are inclined surfaces, and an axial force is generated on the engaging surfaces, and when the load reaches a certain value, the axial force overcomes the elastic force of the third elastic member 173, so that the first clutch member 171 moves in a direction away from the second clutch member 172, and the clutch is disengaged, thereby preventing overload.

To prevent the rotation of the rotary assembly 130 from being continued after the rotary assembly 130 is restored to the initial position when the pipe cutting machine 100 is restored, a limit structure may be provided to limit the rotary assembly 130 to the initial position. As shown in fig. 3 and 4, the pipe cutting machine 100 further includes a limiting plate 103, and the limiting plate 103 is disposed in the casing 110 and located in a circumferential direction of the rotating assembly 130, and is used for limiting the rotating assembly 130 to continue moving in the reset direction when in the initial position. The edge of the rotating assembly 130 is provided with a stopper 134, and the stopper 134 may be provided on the cover plate 133 of the rotating assembly 130. As shown in fig. 4, when the rotating assembly 130 rotates in the reset direction, the stopper 134 can abut against the stopper plate 103 to limit the rotating assembly 130 at the initial position.

Further, as shown in fig. 4, the stopper plate 103 is rotatably disposed in the housing 110, and an elastic member is disposed in the housing 110 to make the stopper plate 103 approach the rotating assembly 130 all the time. The limit plate 103 includes a limit protrusion 1031 and an arc portion 1032. The end of arc portion 1032 extends to the cutting direction along the circumference of runner assembly 130, and the top of arc portion 1032 is located to spacing arch 1031, and spacing arch 1031 is along radially extending to runner assembly 130 to make spacing arch 1031 can block runner assembly 130 with the dog 134 butt, realize spacingly. When the rotating assembly 130 rotates along the cutting direction, the stopper 134 on the rotating assembly 130 is separated from the limiting protrusion 1031 on the limiting plate 103, the edge of the rotating assembly 130 pushes the arc-shaped part 1032 of the limiting plate 103 to push the limiting plate 103 away, and the limiting plate 103 cancels the limitation of the rotating assembly 130; when the rotating assembly 130 rotates in the resetting direction, under the action of the elastic member, the arc portion 1032 of the limiting plate 103 abuts against the edge of the rotating assembly 130, when the rotating assembly 130 rotates to the initial position, the stopper 134 on the rotating assembly 130 abuts against the limiting protrusion 1031 on the limiting plate 103, and the limiting plate 103 and the arc portion 1032 lock the rotating assembly 130 together, so that the rotating assembly 130 is kept at the initial position.

The foregoing illustrates and describes the principles, general features, and advantages of the present invention. It should be understood by those skilled in the art that the above embodiments do not limit the present invention in any way, and all technical solutions obtained by using equivalents or equivalent changes fall within the protection scope of the present invention.

Claims

1. A pipe cutting machine comprising:

the motor comprises a shell and a motor arranged in the shell;

the transmission assembly is connected with the motor;

the rotating assembly is connected with the transmission assembly and can rotate around a first axis under the driving of the motor;

the first bracket component and the second bracket component are arranged on the rotating component, and a cutting area is formed between the first bracket component and the second bracket component; the second bracket component includes a first resilient member that enables the second bracket component to approach the first bracket component;

the method is characterized in that:

further comprising:

the locking block is arranged on the rotating assembly and can linearly slide along the radial direction of the rotating assembly, and the second bracket assembly can be locked when the locking block slides;

the locking piece push pedal is located in the casing and be located runner assembly's circumference the locking piece is followed the runner assembly pivoted in-process, the locking piece can with the contact of locking piece push pedal, just the locking piece push pedal includes at least that more keeps away from the first part at runner assembly center and being closer to the second part at runner assembly center is in order to promote the locking piece to runner assembly's center slides.

2. The pipe cutting machine according to claim 1, wherein:

further comprising:

the ejector rod is arranged on the rotating assembly in a sliding mode and provided with a first end and a second end, and when the locking block slides along the radial direction of the rotating assembly, the locking block can be abutted to the first end of the ejector rod and pushes the ejector rod to slide;

the lockplate, be provided with the locking lever on the second bracket component, the locking lever along with runner assembly's radial vertically direction extends, the lockplate cover is located on the locking lever, when the ejector pin slides, the second end of ejector pin can with the lockplate butt, in order to promote lockplate inclines to one side, makes the lockplate will second bracket component locking.

3. The pipe cutting machine according to claim 2, wherein:

one end of the locking block, which is abutted to the ejector rod, is provided with a first inclined surface, and the first end of the ejector rod is provided with a second inclined surface which is used for being matched with the first inclined surface.

4. The pipe cutting machine according to claim 2, wherein:

the first bracket assembly includes:

the mounting shaft is arranged on the rotating assembly in a sliding manner;

a reed, one end of which is connected to the mounting shaft;

the cutting piece is arranged at the other end of the reed;

5. The pipe cutting machine according to claim 4, wherein:

install epaxial cover and be equipped with the cylinder, the locking block with the one end of installation axle contact is provided with the third inclined plane, the locking block promotes during installation axle, the third inclined plane with the cylinder butt.

6. The pipe cutting machine according to claim 4, wherein:

two grooves are formed in one side of the locking block, the two grooves are distributed in the radial direction of the rotating assembly on the locking block, a second elastic piece is arranged on the rotating assembly, one end of the second elastic piece is fixed on the rotating assembly, and a ball is arranged at the other end of the second elastic piece;

when the locking block is in an initial position where the locking block does not slide towards the center of the rotating assembly, the ball is matched in the groove far away from the center of the rotating assembly in the two grooves; when the locking block slides towards the center of the rotating assembly to lock the second bracket assembly and pull the cutting blade towards the direction close to the second bracket assembly, the ball is matched in the groove which is closer to the center of the rotating assembly in the two grooves.

7. The pipe cutting machine according to claim 1, wherein:

and one end of the locking block, which is in contact with the push plate of the locking block, is provided with a roller.

8. The pipe cutting machine according to claim 1, wherein:

the transmission assembly includes:

the rotating shaft is connected with the driven bevel gear;

9. The pipe cutting machine according to claim 8, wherein:

further comprising:

a clutch assembly, said clutch assembly comprising:

the second clutch piece is arranged on the driven bevel gear;

the first clutch piece is matched with the second clutch piece, a groove is formed in the matching surface of the first clutch piece, a boss is arranged on the matching surface of the second clutch piece, the boss is inserted into the groove under the action of the third elastic piece, and one end face of the boss in two end faces along the circumferential direction of the second clutch piece is a vertical face, and the other end face of the boss is an inclined face; in the two end faces of the groove along the circumferential direction of the first clutch piece, the end face corresponding to the vertical face of the boss is a vertical face, and the end face corresponding to the inclined face of the boss is an inclined face or a vertical face.

10. The pipe cutting machine according to claim 1, wherein:

further comprising:

11. The pipe cutting machine according to claim 1, wherein:

the contact surface of the locking block push plate and the locking block is a curved surface, the curved surface comprises a first curved surface section and a second curved surface section, and the first curved surface section and the second curved surface are respectively the first part and the second part.