Portable copper pipe drawing machine

Abstract

The invention relates to the technical field of copper pipe drawing, in particular to a portable copper pipe drawing machine which comprises a drawing support, a power mechanism arranged on the drawing support and two clamping mechanisms arranged at the top of the drawing support in a central symmetry mode. A drawing die holder is arranged in the middle of the drawing support; the two clamping mechanisms are respectively connected with the power mechanism; the power mechanism is configured to be used for driving the two clamping mechanisms to synchronously and reversely reciprocate; the two sides of the top of the drawing support are each provided with an extrusion block and a driving groove. The extrusion block and the driving groove are configured to be used for enabling the clamping mechanism to be switched between a clamping state and a non-clamping state in the reciprocating motion process. And the two clamping mechanisms alternately clamp and draw the copper pipe penetrating into the drawing die holder, so that continuous drawing operation is realized, and the drawing efficiency of the copper pipe is improved.

Description

Technical Field

[0001] The invention relates to the technical field of copper tube drawing, in particular to a portable copper tube drawing machine. Background Art

[0002] Most of the existing copper tube drawing machines are designed to meet the needs of large-scale production in factories. They are bulky and heavy, which makes them unsuitable for special scenarios such as copper tube installation sites and copper tube maintenance sites where temporary copper tube drawing is required.

[0003] The clamping device of the existing copper tube drawing machine clamps and pulls the tube blank by a chain drive. The pulling length is limited by the length of the guide rail, and the copper tube cannot be drawn continuously and automatically, resulting in low drawing efficiency. Summary of the invention

[0004] The purpose of the present invention is to overcome the above-mentioned shortcomings and provide a portable copper tube drawing machine, so that two clamping mechanisms alternately clamp and draw the copper tube inserted into the drawing die seat, thereby realizing continuous drawing operation and improving the drawing efficiency of the copper tube.

[0005] To achieve the above-mentioned purpose, the specific scheme of the present invention is as follows: a portable copper tube drawing machine, comprising a drawing support and a power mechanism arranged on the drawing support, and two clamping mechanisms symmetrically arranged on the top of the drawing support; a drawing die seat is arranged in the middle of the drawing support; the two clamping mechanisms are respectively connected to the power mechanism; the power mechanism is configured to drive the two clamping mechanisms to synchronously reciprocate in opposite directions; the clamping mechanism comprises a sliding seat slidably arranged on the drawing support, a clamping slide slidably arranged on the sliding seat, a rotating block rotatably arranged at one end of the clamping slide, a driving rod slidably inserted in the clamping slide, a roller connected to the driving rod, and two clamping blocks arranged at one end of the clamping slide opposite to each other in upper and lower directions; Extrusion blocks and driving grooves are provided on both sides of the top of the drawing support; the extrusion blocks and driving grooves are configured to switch between a clamping state and a non-clamping state during the reciprocating motion of the clamping mechanism.

[0006] Optionally, a first spring is provided between the clamping slide and the sliding seat, the rotating block is slidingly hinged to the two clamping blocks, one end of the driving rod is movably connected to the rotating block to drive the rotating block to rotate, and the rotation of the rotating block will drive the clamping block to slide up and down, and a second spring is provided between one end of the driving rod and the clamping slide; the other end of the driving rod is connected to the roller, and the roller is used to movably abut against the extrusion block, and the other end of the clamping slide is elastically connected to a first pin movably embedded in the driving groove.

[0007] Optionally, the clamping mechanism also includes a push rod slidably inserted into the clamping slide, a third spring is provided between one end of the push rod and the other end of the driving rod, and the other end of the push rod passes outwardly from the other end of the clamping slide and is connected to the roller.

[0008] Optionally, one end of the driving rod movably extends into the rotating block, one end of the driving rod is provided with a spiral groove, and the inner wall of the rotating block is provided with a second latch movably embedded in the spiral groove.

[0009] Optionally, two clamping slide blocks are slidably provided at one end of the clamping slide, and two clamping blocks are correspondingly provided on the two clamping slide blocks; each clamping slide block is provided with a horizontal strip hole, and the rotating block is provided with two third pins, and the third pins are movably embedded in the corresponding horizontal strip holes.

[0010] Optionally, a connecting rod extends vertically downward from the other end of the clamping slide; a sliding hole is provided at the end of the connecting rod; a fourth spring is provided in the sliding hole; and the first bayonet movably extends into the sliding hole and abuts against the fourth spring.

[0011] Optionally, the drawing support is provided with guide rails on both sides of the drawing die base; the sliding base is slidably connected to the guide rails.

[0012] Optionally, the driving groove includes a first section and a second section which are parallel to each other, an inclined third section is connected between one end of the first section close to the drawing die seat and one end of the second section close to the drawing die seat, and an inclined fourth section is connected between one end of the first section away from the drawing die seat and one end of the second section away from the drawing die seat; the first section is located on a side of the second section close to the center of the drawing die seat, and the length of the first section is smaller than the length of the second section; the depth of the third section is greater than the depth of the second section and the depth of the fourth section, the depth of one end of the first section close to the third section is the same as the depth of the third section, the depth of the other end of the first section is the same as the depth of the fourth section, and a smooth transition slope is provided in the first section.

[0013] Optionally, the extrusion block is arranged in an area jointly enclosed by the first section, the second section, the third section and the fourth section and is arranged close to the second section; both ends of the extrusion block are provided with inclined surfaces.

[0014] Optionally, the power mechanism includes a power motor, a transmission chain and two sprockets; the power motor is fixedly arranged on the drawing die seat, the two sprockets are rotatably arranged on the drawing die seat at an interval, and the transmission chain is wrapped around the two sprockets; the sliding seat is fixedly connected to the transmission chain through a connecting plate; the power motor drives the sprocket to rotate forward and reverse, thereby driving the two clamping mechanisms to move in opposite directions synchronously.

[0015] Optionally, a drawing bracket for providing support for the copper tube is also fixed on the drawing die seat.

[0016] The beneficial effects of the present invention are as follows: when the portable copper tube drawing machine of the present invention is actually used, the copper tube is inserted into the drawing die seat, and the two clamping mechanisms are driven by the power mechanism to continuously and synchronously reciprocate in the opposite directions. At the same time, the two clamping mechanisms are respectively switched between the clamping state and the non-clamping state through the cooperation of the extrusion block and the driving groove. When the clamping mechanism is in the clamping state, the clamping mechanism clamps and draws the copper tube, and when the clamping mechanism is in the non-clamping state, the clamping mechanism releases the copper tube, so that the two clamping mechanisms alternately clamp and draw the copper tube inserted into the drawing die seat, thereby realizing continuous drawing operation and improving the drawing efficiency of the copper tube. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 It is a schematic diagram of the structure of the present invention; Figure 2 This is a diagram of the present invention in use when one clamping mechanism is in a clamping state and the other clamping mechanism is in a non-clamping state; Figure 3 It is a structural schematic diagram of the clamping mechanism of the present invention; Figure 4 is a cross-sectional schematic diagram of the clamping mechanism of the present invention; Figure 5 It is a schematic diagram of the structure of the clamping slide block and the rotating block of the present invention; Figure 6 It is a structural schematic diagram of the driving rod of the present invention; Figure 7 It is a schematic diagram of the structure in which the driving groove of the present invention is arranged on the top plate; Description of reference numerals: 1. drawing support; 11. bottom plate; 12. top plate; 13. support column; 14. driving groove; 141. first section; 142. second section; 143. third section; 144. fourth section; 15. guide rail; 21. transmission chain; 22. sprocket; 3. clamping mechanism; 31. sliding seat; 32. clamping slide; 321. first spring; 322. first bayonet; 323. connecting rod Connecting rod; 324, fourth spring; 33, rotating block; 331, second latch; 332, third latch; 34, driving rod; 341, second spring; 342, spiral groove; 35, roller; 36, clamping block; 37, push rod; 371, third spring; 38, clamping slider; 381, horizontal strip hole; 39, connecting plate; 4, drawing die seat; 5, extrusion block; 51, inclined surface; 6, drawing bracket. DETAILED DESCRIPTION

[0018] The present invention will be further described in detail below in conjunction with the accompanying drawings and specific embodiments, but the implementation scope of the present invention is not limited thereto.

[0019] like Figures 1 to 7As shown, a portable copper tube drawing machine described in this embodiment includes a drawing support 1; the drawing support 1 includes a bottom plate 11 and a top plate 12, and four corner positions of the bottom plate 11 and four corner positions of the top plate 12 are respectively connected with support columns 13 in a one-to-one correspondence, so that an installation space for installing a power mechanism is formed between the bottom plate 11 and the top plate 12; The portable copper tube drawing machine also includes a power mechanism arranged on the top plate 12 of the drawing support 1, and two clamping mechanisms 3 centrally and symmetrically installed on the top surface of the top plate 12 of the drawing support 1; a drawing die seat 4 is arranged in the middle of the top plate 12 of the drawing support 1; the two clamping mechanisms 3 are respectively connected to the power mechanism; the power mechanism is configured to drive the two clamping mechanisms 3 to synchronously and reversely reciprocate; Extrusion blocks 5 and driving grooves 14 are provided on both sides of the top plate 12 of the drawing support 1; the extrusion blocks 5 and driving grooves 14 are configured to switch the clamping mechanism 3 between a clamping state and a non-clamping state during the reciprocating motion.

[0020] Specifically, when the portable copper tube drawing machine of this embodiment is actually used, the copper tube is inserted into the drawing die seat 4, and the two clamping mechanisms 3 are driven by the power mechanism to continuously and synchronously reciprocate in the opposite directions. At the same time, the two clamping mechanisms 3 are respectively switched between the clamping state and the non-clamping state through the cooperation of the extrusion block 5 and the driving groove 14. When the clamping mechanism 3 is in the clamping state, the clamping mechanism 3 clamps and pulls the copper tube. When the clamping mechanism 3 is in the non-clamping state, the clamping mechanism 3 releases the copper tube. In this way, the two clamping mechanisms 3 alternately clamp and pull the copper tube inserted into the drawing die seat 4, thereby realizing continuous drawing operation and improving the drawing efficiency of the copper tube.

[0021] like Figures 1 to 6 As shown, in the portable copper tube drawing machine of this embodiment, in some embodiments, the clamping mechanism 3 includes a sliding seat 31 slidably arranged on the drawing support 1, a clamping slide 32 slidably arranged on the sliding seat 31, a rotating block 33 rotatably arranged at one end of the clamping slide 32, a driving rod 34 slidably penetrated in the clamping slide 32, a roller 35 connected to the driving rod 34, and two clamping blocks 36 arranged at one end of the clamping slide 32 in an upper and lower manner; A first spring 321 is provided between the clamping slide 32 and the sliding seat 31, the rotating block 33 is slidably hinged with the two clamping blocks 36, one end of the driving rod 34 is movably connected with the rotating block 33 to drive the rotating block 33 to rotate, and the rotation of the rotating block 33 will drive the clamping block 36 to slide up and down, and a second spring 341 is provided between one end of the driving rod 34 and the clamping slide 32; the other end of the driving rod 34 is connected to the roller 35, and the roller 35 is used to movably abut against the extrusion block 5, and the other end of the clamping slide 32 is elastically connected with a first latch 322 that is movably embedded in the driving groove 14.

[0022] Specifically, when the power mechanism drives the clamping mechanism 3 to start moving away from the drawing die seat 4 through the sliding seat 31, the first latch 322 cooperates with the driving groove 14 to drive the clamping slide 32 to slide inward relative to the sliding seat 31, and the clamping slide 32 drives the clamping block 36 to move toward the copper tube, and the first spring 321 is compressed. As the sliding seat 31 continues to slide, the roller 35 begins to contact the extrusion block 5, and the extrusion block 5 applies an extrusion force to the driving rod 34 through the roller 35, thereby pushing the driving rod 34 to slide relatively, and the second spring 341 is compressed. During the sliding process of the driving rod 34, the rotating block 33 drives the two clamping blocks 36 to move toward each other, so that the two clamping blocks 36 clamp the copper tube. At this time, the clamping mechanism 3 is in a clamping state, and the other clamping mechanism 3 is in a non-clamping state. Figure 2 As shown; as the sliding seat 31 slides further, the extrusion block 5 and the roller 35 remain in contact, so that the two clamping blocks 36 maintain the clamping of the copper tube, thereby achieving the clamping and pulling operation of the copper tube; After the sliding seat 31 slides away from the drawing die seat 4 and into position, the roller 35 and the extrusion block 5 are disengaged from the abutment. At this time, the second spring 341 is reset and deformed, and the driving rod 34 slides in the opposite direction, thereby driving the rotating block 33 to rotate in the opposite direction, so that the two clamping blocks 36 move away from each other, thereby loosening the copper tube. Then the first spring 321 is reset, and the clamping slide 32 slides outward relative to the sliding seat 31, that is, driving the two clamping blocks 36 to move away from the copper tube. At this time, the clamping mechanism 3 is in a non-clamping state, and the other clamping mechanism 3 is in a clamping state. In this way, the continuous reciprocating motion of the clamping mechanism 3 realizes the continuous drawing operation of the copper tube, and the production efficiency is high.

[0023] like Figures 1 to 3 As shown, in this embodiment, the number of the first springs 321 is preferably two, and the two first springs 321 are spaced apart and arranged side by side; this makes the movement of the clamping slide 32 more stable.

[0024] like Figure 4 As shown, in the portable copper tube drawing machine of this embodiment, in some embodiments, the clamping mechanism 3 also includes a push rod 37 slidably inserted into the clamping slide 32, and a third spring 371 is provided between one end of the push rod 37 and the other end of the driving rod 34, and the other end of the push rod 37 passes outward from the other end of the clamping slide 32 and is connected to the roller 35. In this embodiment, the push rod 37 is provided to facilitate the connection between the roller 35 and the driving rod 34, and the third spring 371 is provided between the push rod 37 and the driving rod 34, so that when the clamping block 36 clamps copper tubes of different diameters, the third spring 371 can compensate for the position change of the roller 35 caused by the change of the tube diameter, thereby avoiding the occurrence of jamming between the roller 35 and the extrusion block 5, so that the clamping mechanism 3 can clamp and draw copper tubes of different diameters, thereby improving the use flexibility of the drawing machine.

[0025] like Figures 4 to 6 As shown, in the portable copper tube drawing machine of this embodiment, in some embodiments, one end of the driving rod 34 movably extends into the rotating block 33, one end of the driving rod 34 is provided with a spiral groove 342, and the inner wall of the rotating block 33 is provided with a second bayonet 331 movably embedded in the spiral groove 342. Specifically, when the roller 35 contacts and abuts the extrusion block 5, the driving rod 34 compresses the second spring 341 to move, and the second bayonet 331 moves relatively along the track of the spiral groove 342, so that the driving rod 34 drives the rotating block 33 to rotate through the cooperation of the spiral groove 342 and the second bayonet 331, and the rotating block 33 drives the two clamping blocks 36 to move up and down toward each other, thereby clamping the copper tube; After the roller 35 is out of contact with the extrusion block 5, the second spring 341 and the third spring 371 are reset, and the second spring 341 pushes the driving rod 34 to slide in the opposite direction, so that the second latch 331 moves relatively in the opposite direction along the trajectory of the spiral groove 342, thereby driving the rotating block 33 to rotate in the opposite direction, and the rotating block 33 drives the two clamping blocks 36 to move apart, thereby loosening the copper tube.

[0026] like Figure 3 and Figure 4 As shown, in the portable copper tube drawing machine of this embodiment, in some embodiments, two clamping slide blocks 38 are slidably provided at one end of the clamping slide 32, and two clamping blocks 36 are provided on the two clamping slide blocks 38 in a one-to-one correspondence; each clamping slide block 38 is provided with a horizontal bar hole 381, and the rotating block 33 is provided with two third bayonet pins 332, and the third bayonet pins 332 are movably embedded in the corresponding horizontal bar holes 381. Specifically, when the rotating block 33 rotates, the rotating block 33 cooperates with the two horizontal bar holes 381 through the two third bayonet pins 332, thereby driving the two clamping blocks 36 to move up and down toward each other, thereby clamping the copper tube; when the rotating block 33 rotates in the opposite direction, the rotating block 33 cooperates with the two horizontal bar holes 381 through the two third bayonet pins 332, thereby driving the two clamping blocks 36 to move up and down away from each other, thereby loosening the copper tube.

[0027] like Figure 3 and Figure 4 As shown, in the portable copper tube drawing machine of this embodiment, in some embodiments, a connecting rod 323 extends vertically downward from the other end of the clamping slide 32; a sliding hole is provided at the end of the connecting rod 323; a fourth spring 324 is provided in the sliding hole; the first bayonet 322 movably extends into the sliding hole and abuts against the fourth spring 324. In this embodiment, the connecting rod 323 is provided to facilitate the installation of the first bayonet 322, and the fourth spring 324 is provided to enable the first bayonet 322 to always remain in cooperation with the driving slot 14 during the movement, and the structural reliability is higher.

[0028] like Figure 1 and Figure 2As shown, in the portable copper tube drawing machine of this embodiment, in some embodiments, the drawing support 1 is provided with guide rails 15 on both sides of the drawing die base 4; the sliding base 31 is slidably connected to the guide rails 15. In this embodiment, the guide rails 15 are provided to provide guidance and limit for the sliding base 31, so that the movement stability of the sliding base 31 is higher, so that the clamping and drawing operation of the copper tube by the clamping block 36 is more stable.

[0029] like Figure 1 , Figure 2 and Figure 7 As shown, in the portable copper tube drawing machine of this embodiment, in some embodiments, the driving groove 14 includes a first section 141 and a second section 142 which are parallel to each other, an inclined third section 143 is connected between one end of the first section 141 close to the drawing die seat 4 and one end of the second section 142 close to the drawing die seat 4, and an inclined fourth section 144 is connected between one end of the first section 141 away from the drawing die seat 4 and one end of the second section 142 away from the drawing die seat 4; the first section 141 is located on one side of the second section 142 close to the center of the drawing die seat 4, and the length of the first section 141 is less than the length of the second section 142; the depth of the third section 143 is greater than the depth of the second section 142 and the depth of the fourth section 144, the depth of one end of the first section 141 close to the third section 143 is the same as the depth of the third section 143, the depth of the other end of the first section 141 is the same as the depth of the fourth section 144, and a smooth transition slope is provided in the first section 141.

[0030] Specifically, when the sliding seat 31 drives the clamping mechanism 3 to start moving away from the drawing die seat 4, the first latch 322 is located in the third section 143, and under the elastic force of the first spring 321, the first latch 322 abuts against the end of the third section 143 away from the first section 141. As the sliding seat 31 moves away from the drawing die seat 4, since the depth of the third section 143 is greater than the depth of the second section 142, the first latch 322 can only move along the trajectory of the third section 143, and since the third section 143 is inclined, the length of the first section 141 is less than the length of the second section 142, so that during the movement of the first latch 322 along the third section 143, the driving groove 14 passes through the first latch The pin 322 pushes the clamping slide 32, so that the first spring 321 is compressed, and the clamping slide 32 drives the two clamping blocks 36 to move toward the copper tube until the first bayonet 322 enters the first section 141 from the third section 143, and the two clamping blocks 36 are aligned with the copper tube up and down, and the copper tube is located between the two clamping blocks 36, and the sliding seat 31 continues to move away from the drawing die seat 4, and the first bayonet 322 moves along the track of the first section 141 until the roller 35 contacts the extrusion block 5, and the extrusion block 5 compresses the third spring 371 against the push rod 37 to retract, and at the same time pushes the driving rod 34 to compress the second spring 341 to slide, so that the rotating block 33 drives the two clamping blocks 36 to move toward each other to clamp the copper tube; The smooth transition slope is set so that the first pin 322 can move smoothly in the first section 141 until the first pin 322 moves to the intersection of the first section 141 and the fourth section 144, the roller 35 is out of contact with the extrusion block 5, the second spring 341 and the third spring 371 are reset, so that the two clamping blocks 36 release the copper tube, and then the first spring 321 is reset, pushing the clamping slide 32 away from the copper tube, so that the first pin 322 moves along the trajectory of the fourth section 144 until the first pin 322 enters the second section 142 from the fourth section 144, and then the sliding seat 31 slides in the opposite direction, and the first pin 322 moves along the trajectory of the second section 142 until the first pin 322 enters the third section 143 again, and then the above movement process is repeated, so that the clamping mechanism 3 can continuously and intermittently clamp and pull the copper tube.

[0031] like Figure 1 and Figure 2As shown, in the portable copper tube drawing machine of this embodiment, in some embodiments, the extrusion block 5 is arranged in the area enclosed by the first section 141, the second section 142, the third section 143 and the fourth section 144 and is arranged near the second section 142; both ends of the extrusion block 5 are provided with inclined surfaces 51. In this embodiment, by providing the inclined surface 51, when the sliding seat 31 moves away from the drawing die seat 4, the roller 35 contacts the inclined surface 51 at one end of the extrusion block 5, and the extrusion block 5 applies an extrusion force to the roller 35 through the inclined surface 51, thereby driving the clamping action of the two clamping blocks 36, and when the sliding seat 31 is in place away from the drawing die seat 4, the roller 35 contacts the inclined surface 51 at the other end of the extrusion block 5, so that the second spring 341 and the third spring 371 gradually recover their deformation, so that the release action of the two clamping blocks 36 is realized.

[0032] like Figure 1 and Figure 2 As shown, in some embodiments of the portable copper tube drawing machine of this embodiment, the power mechanism includes a power motor (not shown in the figure), a transmission chain 21 and two sprockets 22; the power motor is fixedly arranged on the drawing die seat 4, the two sprockets 22 are arranged on the drawing die seat 4 at intervals, and the transmission chain 21 is wound around the two sprockets 22; the sliding seat 31 is fixedly connected to the transmission chain 21 through the connecting plate 39; the power motor drives the sprocket 22 to rotate forward and reverse, thereby driving the two clamping mechanisms 3 to move in the opposite direction synchronously. Specifically, the power motor is fixedly installed on the bottom surface of the top plate 12, and the two sprockets 22 are rotatably installed at both ends of the top plate 12. In this embodiment, the power motor is set to drive the sprocket 22 to rotate, thereby driving the transmission chain 21 to rotate, and the transmission chain 21 drives the two clamping mechanisms 3 to move in the opposite direction synchronously. In this way, through the continuous forward and reverse rotation of the power motor, the transmission chain 21 drives the two clamping mechanisms 3 to reciprocate in the opposite direction synchronously, so that the two clamping mechanisms 3 alternately clamp and draw the copper tube.

[0033] like Figure 1 and Figure 2 As shown, in the portable copper tube drawing machine of this embodiment, in some embodiments, a drawing bracket 6 for providing support for the copper tube is also fixed on the drawing die base 4. In this embodiment, the drawing bracket 6 is provided to ensure the horizontality of the copper tube, thereby ensuring reliable drawing and forming of the copper tube.

[0034] The above description is only a preferred embodiment of the present invention. Therefore, any equivalent changes or modifications made according to the structure, characteristics and principles described in the scope of the patent application of the present invention are included in the protection scope of the patent application of the present invention.

Claims

1. A portable copper tube drawing machine, characterized in that: It includes a drawing support and a power mechanism arranged on the drawing support, and two clamping mechanisms symmetrically arranged on the top of the drawing support; a drawing die seat is arranged in the middle of the drawing support; the two clamping mechanisms are respectively connected to the power mechanism; the power mechanism is configured to drive the two clamping mechanisms to synchronously reciprocate in opposite directions; the clamping mechanism includes a sliding seat slidably arranged on the drawing support, a clamping slide slidably arranged on the sliding seat, a rotating block rotatably arranged at one end of the clamping slide, a driving rod slidably inserted in the clamping slide, a roller connected to the driving rod, and two clamping blocks arranged at one end of the clamping slide opposite to each other in upper and lower directions; Extrusion blocks and driving grooves are provided on both sides of the top of the drawing support; the extrusion blocks and driving grooves are configured to switch between a clamping state and a non-clamping state during the reciprocating motion of the clamping mechanism.

2. A portable copper tube drawing machine according to claim 1, characterized in that: A first spring is provided between the clamping slide and the sliding seat, the rotating block is slidingly hinged with the two clamping blocks, one end of the driving rod is movably connected with the rotating block to drive the rotating block to rotate, and the rotation of the rotating block will drive the clamping block to slide up and down, and a second spring is provided between one end of the driving rod and the clamping slide; the other end of the driving rod is connected with the roller, and the roller is used to movably abut against the extruding block, and the other end of the clamping slide is elastically connected with a first latch that is movably embedded in the driving groove.

3. A portable copper tube drawing machine according to claim 2, characterized in that: The clamping mechanism also includes a push rod slidably inserted into the clamping slide seat, a third spring is arranged between one end of the push rod and the other end of the driving rod, and the other end of the push rod passes outwardly through the other end of the clamping slide seat and is connected to the roller.

4. A portable copper tube drawing machine according to claim 2, characterized in that: One end of the driving rod movably extends into the rotating block, one end of the driving rod is provided with a spiral groove, and the inner wall of the rotating block is provided with a second bayonet which is movably embedded in the spiral groove.

5. A portable copper tube drawing machine according to claim 2, characterized in that: Two clamping slide blocks are slidably provided at one end of the clamping slide seat, and two clamping blocks are correspondingly provided on the two clamping slide blocks; each clamping slide block is provided with a horizontal strip hole, and the rotating block is provided with two third pins, and the third pins are movably embedded in the corresponding horizontal strip holes.

6. A portable copper tube drawing machine according to claim 2, characterized in that: A connecting rod is vertically extended downward from the other end of the clamping slide seat; a sliding hole is arranged at the end of the connecting rod; a fourth spring is arranged in the sliding hole; the first bayonet movably extends into the sliding hole and abuts against the fourth spring.

7. A portable copper tube drawing machine according to claim 2, characterized in that: The drawing support is provided with guide rails on both sides of the drawing die base; the sliding base is slidably connected to the guide rails.

8. The portable copper tube drawing machine according to claim 1, characterized in that: The driving groove comprises a first section and a second section which are parallel to each other, an inclined third section is connected between one end of the first section close to the drawing die seat and one end of the second section close to the drawing die seat, and an inclined fourth section is connected between one end of the first section away from the drawing die seat and one end of the second section away from the drawing die seat; the first section is located on a side of the second section close to the center of the drawing die seat, and the length of the first section is smaller than the length of the second section; the depth of the third section is greater than the depth of the second section and the depth of the fourth section, the depth of one end of the first section close to the third section is the same as the depth of the third section, and the depth of the other end of the first section is the same as the depth of the fourth section, and a smooth transition slope is provided in the first section.

9. A portable copper tube drawing machine according to claim 8, characterized in that: The extrusion block is arranged in an area enclosed by the first section, the second section, the third section and the fourth section and is arranged close to the second section; both ends of the extrusion block are provided with inclined surfaces.

10. A portable copper tube drawing machine according to claim 2, characterized in that: The power mechanism includes a power motor, a transmission chain and two sprockets; the power motor is fixed on the drawing die seat, the two sprockets are rotated at intervals on the drawing die seat, and the transmission chain is wound around the two sprockets; the sliding seat is fixedly connected to the transmission chain through a connecting plate; the power motor drives the sprocket to rotate forward and reverse, thereby driving the two clamping mechanisms to move in the opposite direction synchronously.

Images