Pipe cutting machine

Abstract

This application relates to a pipe cutting machine, belonging to the field of medical device processing equipment. To solve the problem that there are short pauses during the movement of the flexible pipe, but after the time of multiple pauses is accumulated, it reduces the overall working efficiency of the pipe cutting machine. It includes a frame, on which a conduit disc, several guide rollers, a heating element, a driving component and a cutter are sequentially installed. The conduit disc is rotatably installed on one side of the frame, and several guide rollers are installed on the side of the frame where the conduit disc is located. The heating element is used to heat the flexible pipe; the driving component is used to drive the flexible pipe to unwind from the conduit disc. The driving component includes a driving roller and a pressing roller. The driving roller is driven by a motor to rotate. Several driving grooves are formed on the circumferential side wall of the driving roller. The pressing roller abuts against the driving roller, and a driving channel for the flexible pipe to pass through is formed between the surface of the pressing roller and the inner side wall of the driving groove. The flexible pipe abuts against the inner side wall of the driving groove in the driving channel; the cutter cuts the flexible pipe. This application has the effect of improving the working efficiency of the pipe cutting machine.

Description

Technical Field

[0001] This application relates to the field of medical device processing equipment, and particularly to a tube cutting machine. Background Art

[0002] An indwelling needle includes a flexible tube and a needle core. When in use, the flexible tube and the needle core are punctured into a blood vessel together. After the entire flexible tube enters the blood vessel, the needle core is withdrawn, and only the soft flexible tube is left in the blood vessel for infusion treatment. Before assembly, the flexible tube needs to be cut into segments to form multiple indwelling needle flexible tubes with unified lengths.

[0003] In the related art, there is provided an indwelling needle flexible tube shaping and cutting device, including a catheter disk, a conveying mechanism, a shaping mechanism, a cutting mechanism, and a frame. The flexible tube is coiled in the catheter disk. The conveying mechanism is a movable pulley or a combination of a movable pulley and a fixed pulley. The shaping mechanism includes a feeding jaw and a heat drying tube. A through hole is provided in the heat drying tube. Under the heating of the heat drying tube, the flexible tube unfolds and straightens. The lower outlet or both the upper and lower outlets of the through hole are provided with feeding jaws. The feeding jaws are composed of an upper jaw and a lower jaw, and the upper jaw and the lower jaw alternately clamp and move the flexible tube. The cutting mechanism is a blade driven by a driving mechanism, and the blade repeatedly cuts the flexible tube.

[0004] However, during the alternation of the upper jaw and the lower jaw, there is a short pause in the movement process of the flexible tube. Although the pause time each time is not long, after the multiple pauses are accumulated, the total alternation time is also relatively long, resulting in a reduction in the overall working efficiency of the tube cutting machine. Summary of the Invention

[0005] In order to improve the working efficiency of the tube cutting machine, this application provides a tube cutting machine.

[0006] The tube cutting machine provided by this application adopts the following technical solution:

[0007] A tube cutting machine, including a frame. A catheter disk, a plurality of guide rollers, a heating element, a driving assembly, and a cutting knife are sequentially installed on the frame. The catheter disk is rotatably installed on one side of the frame. The plurality of guide rollers are installed on the side of the frame where the catheter disk is located. The heating element is used to heat the flexible tube. The driving assembly is used to drive the flexible tube to unwind from the catheter disk. The driving assembly includes a driving roller and a pressing roller. The driving roller is driven to rotate by a motor. A plurality of driving grooves are provided on the circumferential side wall of the driving roller. A driving channel for the flexible tube to pass through is formed between the surface of the pressing roller and the driving grooves. The flexible tube abuts against the inner side wall of the driving grooves in the driving channel. The cutting knife cuts the flexible tube.

[0008] By adopting the above technical scheme, the hose is pre-wound on the catheter disc, and the catheter disc is installed on the frame. The starting end of the hose is guided by the guide roller and enters the heating element for heating. After heating, it enters the driving groove and is continuously fed in the direction of the cutter under the action of the driving roller. At this time, the hose is continuously cut by the cutter; the hose can be continuously cut by the cutter, avoiding the pause waiting time of the cutter and improving the working efficiency of the pipe cutting machine.

[0009] Optionally, a positioning bar is installed on the frame, and the positioning bar is installed on the side of the driving roller away from the cutter. The positioning bar is provided with a plurality of positioning holes near the side wall of the frame, and the plurality of positioning holes are arranged through the moving direction of the hose; and the plurality of positioning holes correspond one-to-one to the plurality of driving grooves.

[0010] By adopting the above technical solution, after the hose is guided out from the heating element, it passes through the positioning hole. At this time, under the restriction of the inner wall of the positioning hole, there is always a gap between the hose and the top wall of the driving platform during the movement of the hose on the driving platform; the hose entering the driving groove is positioned in advance by the positioning strip to avoid the hose being skewed when it directly enters the driving groove, thereby causing the hose to be directly flattened by the driving roller and the clamping roller.

[0011] Optionally, the apertures of the positioning holes are different according to different hose diameters, and the apertures of the driving grooves are different according to different hose diameters.

[0012] By adopting the above technical solution, positioning holes of corresponding apertures are selected according to the aperture of the hose itself, so that each positioning hole can be in contact with the corresponding outer wall of the hose, reducing the shaking of the hose in the positioning hole. The apertures of the positioning holes are set differently, which improves the positioning accuracy of the positioning strip for the hose.

[0013] Optionally, a pressing piece is arranged between the driving roller and the heating element, and the pressing piece is rotatably connected to a frame, and a pressing auxiliary roller is arranged on the frame. The pressing piece can press the catheter onto the pressing auxiliary roller, and a pressing support platform is arranged on the side of the pressing auxiliary roller close to the catheter disk.

[0014] By adopting the above technical solution, when the connecting rod rotates to abut against the end side wall of the downward pressure support platform, the downward pressure rod moves into position. At this time, the hose passing through the downward pressure support platform is wound out from under the downward pressure rod and over the downward pressure auxiliary roller. At this time, the hose is always pressed on the downward pressure auxiliary roller by the downward pressure rod; thereby, the hose entering the positioning hole is at the same height as the positioning hole, reducing the continuous friction between the hose and the inner end wall of the positioning hole during the movement of the hose, thereby improving the integrity of the hose.

[0015] Optionally, a driving gear coaxially rotating with the driving roller is installed on one side of the driving roller, and the driving gear is transmission-connected to the motor.

[0016] Optionally, a substitute rod is slidably installed on the frame, and a substitute hole is provided at one end of the substitute rod, through which a hose can pass, and the hose abuts against the inner wall of the substitute hole; a driving member for driving the substitute rod to slide on the frame is installed at one end of the substitute rod; a substitute guide groove is provided on the upper surface of the frame, and the substitute guide groove is configured as an arc groove, and a substitute guide rod sliding in the substitute guide groove is provided on the substitute rod; a lifting member for lifting the substitute rod is also installed on the substitute guide rod.

[0017] By adopting the above technical scheme, the inner side wall of the substitute guide groove guides the substitute guide rod to slide along the shape of its arc groove, so that the substitute rod moves from a position away from the driving roller to a position close to the driving roller during the movement; at this time, the spare hose will be sent into the driving groove and driven by the driving roller to connect the cutting of the previous hose, thereby reducing the occurrence of the pipe cutting machine stopping and better catheter disc, making the working connection of the pipe cutting machine higher and improving the working efficiency of the pipe cutting machine.

[0018] Optionally, the lifting member includes a lifting block and a lifting spring, the lifting block is rotatably connected to the substitute guide rod, and the lifting spring is embedded in the end wall of the lifting block away from the substitute guide rod; a substitute reset groove for resetting the lifting block is provided at the bottom of the substitute guide groove, and a substitute sliding groove is also provided in the frame, the substitute sliding groove is located below the substitute reset groove, and both ends of the substitute sliding groove in the length direction are connected to the substitute reset groove, and the lifting block can move in the substitute sliding groove; a pressing member is also provided on the frame, the pressing member is located on the side of the substitute guide groove close to the driving member, and the pressing member can press the lifting block into the substitute sliding groove.

[0019] By adopting the above technical solution, the driving member drives the substitute rod to move under the action of the substitute guide groove, and the lifting spring is embedded in the embedded groove after being compressed and slides together in the substitute sliding groove. When the movement of the lifting spring and the lifting round block reaches the position where the substitute sliding groove and the substitute reset groove are connected, the lifting round block loses its restriction and bounces upward under the action of the lifting spring. At this time, due to the large elastic force of the lifting spring, the lifting round block and the lifting spring bounce upward and leave the substitute sliding groove and reach the height of the substitute reset groove. At this time, the substitute rod moves away from the driving member and close to the driving roller under the guidance of the substitute guide groove. At this time, the substitute rod pushes the end of the backup hose forward to enter the driving groove;

[0020] When the lifting ball and the lifting spring bounce up and reach the height of the substitute reset groove, the driving part pulls the substitute rod back, and the lifting ball and the lifting spring smoothly move along the substitute reset groove to reset to the initial position. The pressing part presses the substitute rod downward again, so that the lifting spring is compressed and embedded in the embedded groove and enters the height of the substitute sliding groove together with the lifting ball, so that the above action can be repeated at any time under the action of the driving part later.

[0021] Optionally, the pressing member includes a pressing rod and a pressing block, a pressing groove is opened on the frame, the pressing groove is located at one end of the substitute sliding groove close to the driving member, and the pressing rod passes through the pressing groove and enters the substitute reset groove and the substitute sliding groove; the pressing block is arranged on the circumferential side wall of the pressing rod, and a pressing ring groove is spirally opened downward on the inner side wall of the pressing groove, and the pressing block is inserted in the pressing ring groove; the pressing rod can contact the lifting block to limit the height of the substitute rod.

[0022] By adopting the above technical solution, when the pressing rod moves downward in the pressing groove, the pressing block moves downward along the spiral of the pressing ring groove, so that the pressing rod is rotated and inserted. In the process of the pressing rod gradually moving downward, one end of the pressing rod located in the pressing groove always contacts the lifting block, and gradually presses the lifting block in the direction of the substitute sliding groove until the pressing rod completely presses the lifting block into the substitute sliding groove. At this time, the lifting spring is compressed into the embedded groove, and at the same time, the substitute rod is again attached to the substitute platform, so that the spare hose can be limited at any time.

[0023] Optionally, a plurality of deviation rods are provided on the frame, wherein the deviation rods are installed between the substitute rod and the driving roller, and the substitute rod is always located between the deviation rod and the driving member; and a return rod is installed on the frame at each of the deviation rods.

[0024] By adopting the above technical solution, the end of the backup hose pressed by the substitute rod is wound in from the side of the deviation rod away from the driving rod, and is wound out from the side of the return rod close to the deviation rod, and extends in the moving direction of the hose; when the substitute rod sends the backup hose out, the backup hose returns to the moving route of the positioning hole under the action of the deviation rod and the return rod.

[0025] In summary, the present application includes at least one of the following beneficial technical effects:

[0026] 1. The hose is pre-wound on the conduit disc, which is installed on the frame. The beginning of the hose is guided by the guide roller and then enters the heating element for heating. After heating, it enters the driving groove and is continuously fed toward the cutter under the action of the driving roller. At this time, the hose is continuously cut by the cutter. The hose can be continuously cut by the cutter, which avoids the pause waiting time of the cutter and improves the working efficiency of the pipe cutting machine.

[0027] 2. The driving member drives the replacement rod to move under the action of the replacement guiding groove. The lifting spring is compressed and embedded in the embedding groove and slides together in the replacement sliding groove. When the movement of the lifting spring and the lifting circular block reaches the position where the replacement sliding groove communicates with the replacement reset groove, since the lifting circular block loses its restriction, it bounces upward under the action of the lifting spring. At this time, due to the large elastic force of the lifting spring, the entire lifting circular block and the lifting spring bounce upward and leave the replacement sliding groove, and reach the height of the replacement reset groove. At this time, the replacement rod moves away from the driving member and approaches the driving roller under the guiding action of the replacement guiding groove. At this time, the replacement rod sends the end of the spare hose forward to enter the driving groove; when the entire lifting circular block and the lifting spring bounce upward and reach the height of the replacement reset groove, the driving member pulls the replacement rod back, and the lifting circular block and the lifting spring smoothly move along the replacement reset groove and return to the initial position. The pressing member presses the replacement rod downward again, so that the lifting spring is compressed and embedded in the embedding groove and enters the height of the replacement sliding groove together with the lifting circular block, so as to facilitate repeating the above actions again under the action of the driving member at any time in the later stage. Brief Description of the Drawings

[0028] Figure 1 is a schematic structural diagram of the pipe cutting machine in Embodiment 1 of the present application.

[0029] Figure 2 is a schematic structural diagram of the driving assembly in Embodiment 1 of the present application.

[0030] Figure 3 is a schematic structural diagram of the position of the cutting knife in Embodiment 1 of the present application.

[0031] Figure 4 is a schematic structural diagram of the pipe cutting machine in Embodiment 2 of the present application.

[0032] Figure 5 is a schematic diagram of the connection relationship between the replacement platform and the replacement rod in Embodiment 2 of the present application.

[0033] Figure 6 is a sectional view for showing the positional relationship between the replacement sliding groove and the replacement reset groove in Embodiment 2 of the present application.

[0034] Figure 7 is Figure 6 an enlarged schematic diagram of A in

[0035] Description of the reference numerals: 1. Frame; 11. Driving platform, 111. Deviating rod; 112. Returning rod; 12. Substitute platform; 121. Driving member, 1211. Driving cylinder; 1212. Driving rod; 122. Substitute guiding groove; 123. Substitute sliding groove; 124. Substitute reset groove; 125. Partition plate; 126. Pressing groove; 127. Pressing ring groove; 2. Duct plate; 3. Guide roller; 4. Heating member; 5. Driving assembly; 51. Driving roller; 511. Driving groove; 512. Driving gear; 52. Pressing roller; 6. Cutter; 7. Positioning bar; 71. Positioning hole; 8. Pressing member; 81. Pressing rod; 82. Connecting rod; 83. Pressing auxiliary roller; 84. Pressing support platform; 9. Substitute rod; 91. Substitute hole; 92. Substitute guiding rod; 93. Lifting member; 931. Lifting round block; 9311. Embedded groove; 932. Lifting spring; 94. Pressing member; 941. Pressing rod; 942. Pressing round block. Detailed implementation manners

[0036] The following further elaborates on this application in conjunction with the Figures 1-7 accompanying drawings.

[0037] The embodiment of this application discloses a pipe cutting machine.

[0038] Embodiment 1

[0039] Referring to Figure 1 , the pipe cutting machine includes a frame 1. One end of the frame 1 is provided with a duct plate 2. The duct plate 2 is detachably installed on the frame 1. After the duct plate 2 is installed on the frame 1, it can be rotated around the center of the duct plate 2 itself by a motor to unwind the hose.

[0040] A number of guide rollers 3 are also rotatably connected to the frame 1 through bearings. The number of guide rollers 3 plays a guiding role for the hose. At this time, the arrangement of the number of guide rollers 3 corresponds to the duct plate 2, and the number of guide rollers 3 can guide the hose; along the moving path of the hose, a heating member 4 is also provided. The heating member 4 is installed on the frame 1. The heating member 4 is powered on to heat the hose passing through the heating member 4, so that the deformed hose is re-straightened after passing through the heating area.

[0041] Referring to Figure 2 , along the moving path of the hose, a pressing support platform 84 is further provided behind the heating member 4. The pressing support platform 84 is installed on the frame 1. On the side of the pressing support platform 84 away from the duct plate 2, a pressing auxiliary roller 83 is provided. The pressing auxiliary roller 83 is rotatably connected to the frame 1. A pressing member 8 is provided on the pressing auxiliary roller 83. The pressing member 8 includes a pressing rod 81 and two connecting rods 82. The two connecting rods 82 are respectively connected to both ends of the pressing rod 81, and the connecting rods 82 are arranged perpendicular to the pressing rod 81. The end of the connecting rod 82 away from the pressing rod 81 is rotatably connected to the frame 1.

[0042] In this embodiment, the connecting rod 82 is an arc-shaped rod. The connecting rod 82 rotates to drive the position change of the pressing rod 81. When the connecting rod 82 rotates to abut against the end side wall of the pressing support platform 84, the pressing rod 81 moves in place. At this time, the hose passing through the pressing support platform 84 winds out from below the pressing rod 81 and above the pressing auxiliary roller 83. At this time, the hose is always pressed on the pressing auxiliary roller 83 by the pressing rod 81.

[0043] Along the moving path of the hose, behind the pressing auxiliary roller 83, a positioning strip 7 is arranged on the frame 1. At this time, a driving platform 11 is pre-installed on the frame 1. One end of the driving platform 11 is close to the pressing auxiliary roller 83. The positioning strip 7 is fixed to the driving platform 11 by bolts. A plurality of positioning holes 71 are formed in the side wall of the positioning strip 7 close to the frame 1. The plurality of positioning holes 71 are arranged through along the moving direction of the hose. The apertures of the plurality of positioning holes 71 are different according to different hose diameters.

[0044] After the hose is pressed and led out from the pressing auxiliary roller 83, the positioning holes 71 with corresponding apertures are selected according to the aperture of the hose itself, and the hose passes through the positioning holes 71. At this time, under the restriction of the inner side wall of the positioning holes 71, there is always a gap between the hose and the top wall of the driving platform 11 during the movement on the driving platform 11.

[0045] Along the moving path of the hose and at the end of the driving platform 11, a driving assembly 5 is arranged. The driving assembly 5 includes a driving roller 51 and a pressing roller 52. The driving roller 51 is rotatably connected to the driving platform 11, and a driving gear 512 coaxial with the driving roller 51 is further connected to the driving roller 51. The driving gear 512 is meshed and driven with the gear on the motor driving shaft. A plurality of driving grooves 511 are formed in the circumferential side wall of the driving roller 51, and the plurality of positioning holes 71 correspond to the plurality of driving grooves 511 one by one. The notch apertures of the plurality of driving grooves 511 are different according to different hose diameters.

[0046] Refer to Figure 2 and Figure 3 , the pressing roller 52 is embedded in the driving platform 11 and is in contact with the driving roller 51. A driving channel for the hose to pass through is formed between the surface of the pressing roller 52 and the inner side wall of the driving groove 511. The hose abuts against the inner side wall of the driving groove 511 in the driving channel; under the continuous rotation of the driving roller 51, the hose continues to move along the moving path. A cutter 6 is also slidably arranged on the frame 1 through a cylinder. The cutter 6 is located at one end of the driving platform 11 away from the conduit disc 2. The moving hose is cut by the cutter 6.

[0047] The implementation principle of Embodiment 1 of this application for a pipe cutting machine is as follows: The flexible hose is pre-wound around the conduit disc 2, and the conduit disc 2 is installed on the frame 1. The starting end of the flexible hose enters the heating element 4 for heating after being guided by the guide roller 3. After heating, it is pressed down by the pressing member 8 and passes through the positioning hole 71 for positioning and then enters the driving groove 511. Under the action of the driving roller 51, it continuously feeds towards the cutting knife 6. At this time, the flexible hose is continuously cut by the cutting knife 6. The flexible hose can be continuously cut by the cutting knife 6, avoiding the pause waiting time of the cutting knife 6 and improving the working efficiency of the pipe cutting machine.

[0048] Embodiment 2

[0049] The difference between this embodiment and Embodiment 1 lies in:

[0050] Referring to Figure 4 , two conduit discs 2 are provided, and the two conduit discs 2 are arranged staggeredly on the frame 1. The guide roller 3 can also guide the two flexible hoses on the two conduit discs 2. And there are 2 driving grooves 511 with the same aperture, and these two driving grooves 511 with the same aperture are arranged adjacent to each other, so that the cutting knife 6 can cut the flexible hoses coming out of these two driving grooves 511 without adjustment.

[0051] Referring to Figure 4 and Figure 5 , along the moving path of the flexible hose, behind the positioning bar 7, a replacement rod 9 is provided on the frame 1. A replacement platform 12 is integrally formed on the side wall of the driving platform 11. The replacement rod 9 can slide back and forth on the replacement platform 12 and the driving platform 11. A driving member 121 for driving the replacement rod 9 to slide is also installed on the replacement platform 12. The driving member 121 includes a driving cylinder 1211. A driving rod 1212 is hinged between the piston rod of the cylinder 1211 and one end of the replacement rod 9 close to the cylinder 1211. The hole at the connection of the driving rod 1212 and the replacement rod 9 is a waist-shaped hole, so that in addition to being able to rotate between the driving rod 1212 and the replacement rod 9, the movement of the hinge point between the driving rod 1212 and the replacement rod 9 is also realized by using the length of the waist-shaped hole.

[0052] Referring to Figure 5 and Figure 6 , a replacement hole 91 is opened at one end of the replacement rod 9 away from the driving member 121. The replacement hole 91 is opened along the moving direction of the flexible hose and is communicated with the bottom wall of the replacement rod 9. The flexible hose passes through the replacement hole 91 and is pressed against the replacement platform 12 by the inner side wall of the replacement hole 91.

[0053] The rack 1 is provided with a substitute guiding groove 122 on the substitute platform 12. The substitute guiding groove 122 is an arc-shaped groove when viewed from above, and the distance between the end of the substitute guiding groove 122 close to the driving member 121 and the positioning bar 7 is less than the distance between the end of the substitute guiding groove 122 far from the driving member 121 and the positioning bar 7. The bottom wall of the substitute rod 9 is integrally formed with a substitute guiding rod 92. The substitute guiding rod 92 slides in the substitute guiding groove 122, and the inner side wall of the substitute guiding groove 122 guides the substitute guiding rod 92 to slide along the shape of its arc-shaped groove, so that the substitute rod 9 moves from a position close to the positioning bar 7 to a position far from the positioning bar 7 during the movement. At the same time, the end of the substitute rod 9 far from the driving member 121 moves from the substitute platform 12 to the driving platform 11.

[0054] A lifting member 93 is provided at the end of the substitute guiding rod 92 far from the substitute rod 9. The lifting member 93 includes a lifting round block 931. The lifting round block 931 is rotatably connected to the substitute guiding rod 92. An embedded groove 9311 is formed on the end wall of the lifting round block 931 facing away from the substitute guiding rod 92. A lifting spring 932 is installed in the embedded groove 9311. One end of the lifting spring 932 is welded to the bottom wall of the embedded groove 9311. When the lifting spring 932 is in a normal state, the end of the lifting spring 932 far from the lifting round block 931 can extend out of the embedded groove 9311. When the lifting spring 932 is completely inside the embedded groove 9311, the lifting spring 932 is in a compressed state.

[0055] Refer to Figure 5 and Figure 6 , a substitute reset groove 124 and a substitute sliding groove 123 are formed in the substitute platform 12. The substitute sliding groove 123 is located below the substitute reset groove 124. The two ends of the substitute sliding groove 123 in the length direction communicate with the substitute reset groove 124 for the lifting round block 931 to pass through. At the same time, both the substitute reset groove 124 and the substitute sliding groove 123 communicate with the substitute guiding groove 122.

[0056] The substitute platform 12 left between the substitute reset groove 124 and the substitute sliding groove 123 is called a partition plate 125 in this embodiment. There are two partition plates 125. Both partition plates 125 are integrally formed with the substitute platform 12. The two partition plates 125 are at the same height, and there is a gap for the substitute guiding rod 92 to slide between the two partition plates 125. This gap is arranged along the setting direction of the substitute guiding groove 122. The ends of the two partition plates 125 close to the driving platform 11 are provided with slopes. During the movement of the lifting round block 931, the lifting spring 932 smoothly enters the substitute reset groove 124 together with the lifting round block 931 under the guidance of the slope.

[0057] The driving member 121 drives the replacement rod 9 to move under the action of the replacement guide groove 122. The lifting spring 932 is compressed and then embedded in the embedded groove 9311 and slides together in the replacement sliding groove 123. When the movement of the lifting spring 932 and the lifting circular block 931 reaches the position where the replacement sliding groove 123 communicates with the replacement reset groove 124, since the lifting circular block 931 loses the restriction of the bottom wall of the partition plate 125, it bounces upward under the action of the lifting spring 932. At this time, due to the large elastic force of the lifting spring 932, the entire lifting circular block 931 and the lifting spring 932 bounce upward and leave the replacement sliding groove 123 and reach the height of the replacement reset groove 124. At this time, the replacement rod 9 moves away from the driving member 121 and away from the positioning bar 7 under the guiding action of the replacement guide groove 122. At this time, the replacement rod 9 sends the end of the hose forward to enter the next operation position.

[0058] When the entire lifting circular block 931 and the lifting spring 932 bounce upward and reach the height of the replacement reset groove 124, the driving member 121 pulls the replacement rod 9 back, and the lifting circular block 931 and the lifting spring 932 smoothly move along the replacement reset groove 124 and return to the initial position. A pressing member 94 is arranged at the initial position to press the replacement rod 9 downward again, so that the lifting spring 932 is compressed and then embedded in the embedded groove 9311 and enters the height of the replacement sliding groove 123 together with the lifting circular block 931, so as to facilitate repeating the above actions at any time under the action of the driving member 121 later.

[0059] Refer to Figure 6 and Figure 7 As shown in, the pressing member 94 includes a pressing rod 941. A pressing groove 126 is formed on the rack 1 on the replacement platform 12. The pressing groove 126 is located at one end of the replacement sliding groove 123 close to the driving member 121. The pressing rod 941 passes through the pressing groove 126 and enters the replacement reset groove 124 and the replacement sliding groove 123. A pressing circular block 942 is integrally formed on the peripheral side wall of the pressing rod 941. A pressing ring groove 127 is spirally formed downward on the inner side wall of the pressing groove 126. The pressing circular block 942 is inserted into the pressing ring groove 127, and when the pressing rod 941 moves downward in the pressing groove 126, the pressing circular block 942 spirals downward along the pressing ring groove 127, so that the pressing rod 941 is rotationally inserted. During the process of the pressing rod 941 gradually moving downward, one end of the pressing rod 941 located in the pressing groove 126 always abuts against the lifting circular block 931 and gradually presses the lifting circular block 931 toward the replacement sliding groove 123 until the pressing rod 941 completely presses the lifting circular block 931 into the replacement sliding groove 123. At this time, the lifting spring 932 is compressed into the embedded groove 9311. At the same time, the replacement rod 9 also adheres to the replacement platform 12 again, and the spare hose can be limited at any time.

[0060] Along the moving path of the hose, a deviation rod 111 is further provided behind the positioning bar 7. At this time, the deviation rod 111 is installed on the driving platform 11, and the substitute rod 9 is located between the deviation rod 111 and the positioning bar 7. In the present embodiment, a plurality of deviation rods 111 are provided, and the specific number of the deviation rods 111 is half of the number of the driving grooves 511, that is, for every two driving grooves 511 of the same aperture, only one driving groove 511 is provided with the deviation rod 111; a return rod 112 is also installed on the driving platform 11. In the present embodiment, a plurality of return rods 112 are provided, and the number of the return rods 112 is consistent with the number of the deviation rods 111, and the connecting line between the return rod 112 and the corresponding positioning hole 71 is parallel to the moving direction of the hose.

[0061] The end of the backup hose pressed by the substitute rod 9 is wound in from the side of the deviation rod 111 away from the driving rod, and is wound out from the side of the return rod 112 close to the deviation rod 111, and extends in the moving direction of the hose; when the substitute rod 9 sends the hose out, the backup hose returns to the moving route of the positioning hole 71 under the action of the deviation rod 111 and the return rod 112.

[0062] The implementation principle of the pipe cutting machine of the second embodiment of the present application is as follows: the hose on the spare conduit disk 2 passes through the guide roller 3, the heating element 4 and the positioning hole 71, and then passes through the substitute hole 91, and after winding out from the deviation rod 111 and the return rod 112, it is still on the same moving straight line as the positioning hole 71 passed through before. At this time, the starting end of the spare hose stops after reaching the return rod 112 and does not enter the driving groove 511;

[0063] At this time, the standby hose is pressed against the standby platform 12 by the standby rod 9. When the hose being cut is about to be cut, the driving member 121 is started, and the driving member 121 causes the standby rod 9 to move along the standby guide groove 122. At this time, the lifting spring 932 is compressed and embedded in the embedded groove 9311 and slides together in the standby sliding groove 123. When the lifting spring 932 and the lifting round block 931 move to the position where the standby sliding groove 123 and the standby reset groove 124 are connected, the lifting round block 931 and the lifting spring 932 are completely bounced upward and leave the standby sliding groove 123 and reach the height of the standby reset groove 124.

[0064] At the same time, the restriction of the substitute rod 9 on the spare hose disappears, and the spare hose moves forward under the action of the substitute rod 9. The starting end of the spare hose located at the return rod 112 moves forward and enters the driving groove 511. The spare hose is then driven by the driving roller 51, continues to move forward and is cut by the cutter 6. At this time, the spare hose is transformed into a normal cut hose.

[0065] When the lifting circular block 931 and the lifting spring 932 bounce up completely and reach the height of the substitute reset groove 124, the driving member 121 pulls back the substitute rod 9. At this time, the substitute rod 9 is always in the lifted state and has no restrictive effect on the spare hose. The lifting circular block 931 and the lifting spring 932 smoothly move along the substitute reset groove 124 and reset to the initial position. Install the spare hose at the initial position, and rotate and press the pressing rod 941 to press the substitute rod 9 downward again, so that the lifting spring 932 is compressed and embedded in the embedded groove 9311 and enters the height of the substitute sliding groove 123 together with the lifting circular block 931, so as to facilitate repeating the above actions again under the action of the driving member 121 at any time in the later stage; to achieve seamless connection of hose cutting and further improve the working efficiency of the pipe cutting machine.

[0066] The above are all the preferred embodiments of this application, and do not limit the protection scope of this application accordingly. Therefore, all equivalent changes made according to the structure, shape, and principle of this application should be covered within the protection scope of this application.

Claims

1. Pipe cutting machine, comprising a frame (1), characterized in that: A conduit disc (2), a plurality of guide rollers (3), a heating member (4), a driving assembly (5) and a cutter (6) are sequentially installed on the frame (1). The conduit disc (2) is rotatably installed on one side of the frame (1), and the plurality of guide rollers (3) are installed on one side of the frame (1) where the conduit disc (2) is located. The heating member (4) is used to heat the hose. The driving assembly (5) is used to drive the hose to unwind from the conduit disc (2). The driving assembly (5) includes a driving roller (51) and a pressing roller (52). The driving roller (51) is driven to rotate by a motor. A plurality of driving grooves (511) are formed on the circumferential side wall of the driving roller (51). A driving channel for the hose to pass through is formed between the surface of the pressing roller (52) and the inner side wall of the driving groove (511). The hose abuts against the inner side wall of the driving groove (511) in the driving channel. The cutter (6) cuts the hose. A replacement rod (9) is slidably installed on the frame (1). A replacement hole (91) is formed at one end of the replacement rod (9), and a spare hose can pass through the replacement hole (91). The spare hose abuts against the inner side wall of the replacement hole (91). A driving member (121) for driving the replacement rod (9) to slide on the frame (1) is installed at one end of the replacement rod (9). A replacement guide groove (122) is formed on the upper surface of the frame (1), and the replacement guide groove (122) is set as an arc groove. A replacement guide rod (92) for sliding in the replacement guide groove (122) is arranged on the replacement rod (9). A lifting member (93) for lifting the replacement rod (9) is further installed on the replacement guide rod (92). The spare hose is pressed by the replacement rod (9). When the hose being cut is about to be cut off, the driving member (121) is activated to make the replacement rod (9) move along the replacement guide groove (122). At the same time, the restriction of the replacement rod (9) on the spare hose disappears. The spare hose moves forward under the action of the replacement rod (9) and enters the driving groove (511). The spare hose is then driven by the driving roller (51) and continues to move forward and is cut by the cutter (6). At this time, the spare hose becomes a hose being normally cut.

2. The pipe cutting machine according to claim 1, characterized in that: A positioning strip (7) is installed on the frame (1). The positioning strip (7) is installed on the side of the driving roller (51) away from the cutter (6). A plurality of positioning holes (71) are formed on the side wall of the positioning strip (7) close to the frame (1). The plurality of positioning holes (71) are arranged to penetrate along the moving direction of the hose. And the plurality of positioning holes (71) correspond to the plurality of driving grooves (511) one by one.

3. The pipe cutting machine according to claim 2, characterized in that: The apertures of the plurality of positioning holes (71) are different according to different hose diameters, and the notch diameters of the plurality of driving grooves (511) are different according to different hose diameters.

4. The pipe cutting machine according to claim 2, characterized in that: A pressing member (8) is arranged between the driving roller (51) and the heating member (4). The pressing member (8) is rotatably connected to the frame (1). A pressing auxiliary roller (83) is arranged on the frame (1). The pressing member (8) can press the conduit against the pressing auxiliary roller (83). A pressing support platform (84) is arranged on one side of the pressing auxiliary roller (83) close to the conduit disc (2).

5. The pipe cutting machine according to claim 1, characterized in that: A driving gear (512) that rotates coaxially with the driving roller (51) is installed on one side of the driving roller (51). The driving gear (512) is in transmission connection with the motor.

6. The pipe cutting machine according to claim 1, characterized in that: The lifting member (93) includes a lifting round block (931) and a lifting spring (932). The lifting round block (931) is rotatably connected to the substitute guide rod (92). The lifting spring (932) is embedded in the end wall of the lifting round block (931) facing away from the substitute guide rod (92). A substitute reset groove (124) for the lifting round block (931) to reset is formed at the bottom of the substitute guide groove (122). A substitute sliding groove (123) is further arranged in the frame (1). The substitute sliding groove (123) is located below the substitute reset groove (124), and both ends in the length direction of the substitute sliding groove (123) communicate with the substitute reset groove (124). The lifting round block (931) can move in the substitute sliding groove (123). A pressing member (94) is further arranged on the frame (1). The pressing member (94) is located on one side of the substitute guide groove (122) close to the driving member (121). The pressing member (94) can press the lifting round block (931) into the substitute sliding groove (123).

7. The pipe cutting machine according to claim 6, wherein: The pressing member (94) includes a pressing rod (941) and a pressing round block (942). A pressing groove (126) is formed on the frame (1). The pressing groove (126) is located at one end of the substitute sliding groove (123) close to the driving member (121). The pressing rod (941) passes through the pressing groove (126) and enters the substitute reset groove (124) and the substitute sliding groove (123). The pressing round block (942) is arranged on the peripheral side wall of the pressing rod (941). A pressing ring groove (127) is spirally formed downward on the inner side wall of the pressing groove (126). The pressing round block (942) is inserted into the pressing ring groove (127). The pressing rod (941) can abut against the lifting round block (931) to limit the height of the substitute rod (9).

8. The pipe cutting machine according to claim 7, wherein: A plurality of deviation rods (111) are arranged on the frame (1). The deviation rods (111) are installed between the substitute rod (9) and the driving roller (51). The substitute rod (9) is always located between the deviation rods (111) and the driving member (121). A return rod (112) is installed on the frame (1) at each deviation rod (111).

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