Horizontal cold-drawing machine

Abstract

The utility model relates to the field of cold drawing of pipe fittings, in particular to a horizontal cold drawing machine which comprises a base, a die changing mechanism is fixed at the left end of the base, a stripping mechanism is arranged on the left side of the die changing mechanism, a first liftable material supporting frame and a second liftable material supporting frame are arranged on the right side of the die changing mechanism, and a punch is arranged on the second material supporting frame. According to the cold-drawing machine, due to the arrangement of the die changing mechanism and the punch changing mechanism, the replacement of the die and the punch in the die changing mechanism is facilitated, so that one cold-drawing machine can adapt to blanks of various different sizes, the adaptability is wide, the production efficiency is high, the production cost is low, the production cost is low, and the production efficiency is high. In addition, the cold-drawing machine is arranged to be horizontal, compared with a vertical cold-drawing machine, on one hand, space is saved, on the other hand, operation is convenient, and stability and safety of the cold-drawing machine are greatly improved.

Description

Technical Field

[0001] The utility model relates to the field of cold drawing of pipe fittings, in particular to a horizontal cold drawing machine. Background Art

[0002] As the main processing equipment for cold drawing steel pipes, a cold drawing machine is used for drawing black and non-ferrous metal bar materials at normal temperature and for secondary processing of the rough pipes after hot rolling and extrusion. It is the main processing equipment for producing small-diameter, precision, thin-walled and high-mechanical-property pipes. The patent with the application number CN201420262240.4 discloses a hydraulic cold drawing machine. Although this hydraulic cold drawing machine can radially fix the oil cylinder base, the die holder and the material rack and make a firm connection with the ground, effectively preventing the hydraulic cold drawing machine from moving during operation. At the same time, the structure of the feeding device can make the drawn pipe blanks roll onto the material rack in an orderly manner, reducing manual handling. However, this hydraulic cold drawing machine can only adapt to one size of blank and cannot adapt to multiple sizes of blanks, which leads to very limited use of the cold drawing machine. Therefore, there is an urgent need for a cold drawing machine that can adapt to multiple sizes of blanks. Content of the Utility Model

[0003] Aiming at the deficiencies of the prior art, the purpose of the utility model is to provide a horizontal cold drawing machine, which solves the problems existing in the prior art. Through the setting of the die changing mechanism and the punch changing mechanism, the replacement of the die and the punch is convenient. In this way, a cold drawing machine can adapt to multiple different sizes of blanks, with a wide adaptability, and at the same time, the cost is greatly saved.

[0004] To achieve the above purpose, the utility model provides the following technical solution: A horizontal cold drawing machine includes a base. A die changing mechanism is fixed to the left end of the base. A blank stripping mechanism is arranged on the left side of the die changing mechanism. An elevating first material supporting frame and a second material supporting frame are arranged on the right side of the die changing mechanism. A punch is arranged on the second material supporting frame. A punch changing mechanism is arranged at the right end of the punch. A sliding seat is fixed to the right end of the punch changing mechanism. A material pushing mechanism is fixed to the right end of the sliding seat.

[0005] Preferably, the die changing mechanism includes a fixed part and a detachable part. A groove is formed on the right side surface of the fixed part. A through hole is formed on the left side surface of the groove. A first semi-circular die placing groove is arranged inside the groove. A second semi-circular die placing groove matching the first semi-circular die placing groove is arranged at the bottom of the detachable part.

[0006] Preferably, the blank stripping mechanism includes a clamping structure and a material receiving frame arranged on the left side of the clamping structure. The clamping structure is arranged on the left side surface of the fixed part. It includes two symmetric sub-clamping structures. The sub-clamping structure includes a first oil cylinder. The end of the telescopic rod of the first oil cylinder is fixed with a clamping block. The clamping block is slidably connected to the left side surface of the fixed part. A semi-circular clamping groove is formed on the side of the clamping block away from the first oil cylinder.

[0007] Preferably, the first material supporting frame includes a second oil cylinder fixed on the base. The end of the telescopic rod of the second oil cylinder is fixed with a U-shaped frame. A number of V-shaped rollers are rotatably connected inside the U-shaped frame. Two guide shafts are fixed on the bottom surface of the U-shaped frame, and guide holes matching the guide shafts are provided on the base.

[0008] Preferably, the punch replacement mechanism includes an upper annular block fixedly connected with the sliding seat and a lower annular block detachably connected with the upper annular block. A semi-circular clamping groove is provided at the right end of the lower annular block. The diameter of the semi-circular clamping groove is larger than the inner diameter of the lower annular block. A cushion block is fixed inside the semi-circular clamping groove. The cushion block is fixedly connected with the sliding seat. A positioning block is clamped inside the semi-circular clamping groove on the left side of the cushion block. A punch is fixed at the center position of the left side surface of the positioning block.

[0009] Preferably, a liftable third material supporting frame is provided below the lower annular block. The third material supporting frame includes a third oil cylinder fixed on the base. The end of the telescopic rod of the third oil cylinder is fixed with a material supporting block. A material supporting groove matching the lower annular block is provided on the material supporting block. Two guide rods are fixed on the bottom surface of the material supporting block, and guide holes matching the guide rods are provided on the base.

[0010] Preferably, a supporting block is fixed at the right end of the base. Four guide columns are provided between the supporting block and the die changing mechanism. The supporting block, the die changing mechanism and the guide columns are locked into a whole through connecting rod nuts. The sliding seat is slidably connected with all four guide columns.

[0011] Preferably, the material pushing mechanism includes a material pushing oil cylinder. The material pushing oil cylinder penetrates through the supporting block and is fixedly connected with the supporting block. The end of the telescopic rod of the material pushing oil cylinder is fixed on the sliding seat. A supporting seat is fixed near the rear end of the material pushing oil cylinder.

[0012] Preferably, the upper surface of the supporting block is fixed on the left end of the supporting plate. Two supporting legs are fixed at the right end of the supporting plate. A hydraulic station is fixed on the supporting plate. A fence is provided around the hydraulic station.

[0013] 1. Through the settings of the die changing mechanism and the punch replacement mechanism of the present utility model, it is convenient to replace the die and the punch inside the die changing mechanism. In this way, a cold drawing machine can adapt to various billets with different sizes, with wide adaptability, and at the same time, the cost is greatly saved. In addition, the cold drawing machine is set in this horizontal form. Compared with the vertical form, on the one hand, space is saved, and on the other hand, operation is convenient, greatly improving the stability and safety of the cold drawing machine;

[0014] 2. Through the setting of the die changing mechanism of the present utility model, the die can always be placed into the first semi-circular die placing groove, and the center of the die and the center of the through hole are always kept on the same horizontal straight line, without the need for adjustment, and it is very convenient to replace;

[0015] 3. By providing a clamping structure and a blank receiving rack, the utility model very conveniently and efficiently realizes the separation of the blank and the punch.

[0016] 4. The utility model sets the first blank supporting rack to be liftable, so that the center of the blank with different sizes can be adjusted to adapt to blanks of different sizes. The setting of the V-shaped rollers well prevents the blank from falling, and also greatly reduces the resistance when it is pushed, facilitating the pushing. The setting of the guiding shaft well limits the U-shaped frame and ensures its stability at the same time.

[0017] 5. By providing a punch replacement mechanism, the utility model well positions the punch, so that the centers of punches of any size always coincide. In this way, it is not necessary to adjust the center of the punch subsequently, facilitating the replacement.

[0018] 6. The utility model provides a third blank supporting rack, which plays a very good auxiliary role in the replacement of the punch. When replacing the punch, it can achieve a very good anti-compression and shock-absorbing effect, ensuring the stability of the punch replacement mechanism and providing good protection for it. After the punch replacement is completed, the third blank supporting rack will be in a lowered state, thus not affecting the leftward sliding of the slide seat.

[0019] 7. By providing the support block, the connecting rod and the four guiding columns, the utility model makes the whole cold drawing machine more stable and stronger. Moreover, after the four guiding columns are provided, four-corner and eight-sided guide rails can be set on the slide seat, making the operation of the slide seat more stable and accurate. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 is the overall schematic diagram of the utility model.

[0021] Figure 2 is the schematic diagram of the die changing mechanism of the utility model.

[0022] Figure 3 is the Figure 2 exploded schematic diagram of the utility model.

[0023] Figure 4 is the schematic diagram of the blank discharging mechanism of the utility model.

[0024] Figure 5 is the schematic diagram of the clamping structure of the utility model.

[0025] Figure 6 is the schematic diagram of the sub-clamping structure of the utility model.

[0026] Figure 7 is the schematic diagram of the first blank supporting rack or the second blank supporting rack of the utility model.

[0027] Figure 8Schematic diagram of the V-shaped roller of the present utility model.

[0028] Figure 9 Overall schematic diagram of the punch, punch replacement mechanism and third material supporting rack of the present utility model.

[0029] Figure 10 Schematic diagram of the lower annular block and semi-circular clamping groove of the present utility model.

[0030] Figure 11 Schematic diagram of the punch, positioning block, lower annular block and cushion block of the present utility model.

[0031] Figure 12 Schematic diagram of the punch and positioning block of the present utility model.

[0032] Figure 13 Schematic diagram of the lower annular block, semi-circular clamping groove and cushion block of the present utility model.

[0033] Figure 14 Schematic diagram of the third material supporting rack of the present utility model.

[0034] Figure 15 For the present utility model Figure 1 Schematic diagram after adding the blank.

[0035] Figure 16 Overall schematic diagram of the sliding seat of the present utility model.

[0036] In the figure: 1 - base, 2 - die change mechanism, 3 - stripping mechanism, 4 - first material supporting rack, 5 - second material supporting rack, 6 - punch, 7 - punch replacement mechanism, 8 - sliding seat, 9 - material pushing mechanism, 10 - fixing part, 11 - detachable part, 12 - groove, 13 - through hole, 14 - first semi-circular mold placing groove, 15 - second semi-circular mold placing groove, 16 - clamping structure, 17 - material receiving rack, 18 - sub-clamping structure, 19 - first oil cylinder, 20 - clamping block, 21 - semi-circular clamping groove, 22 - second oil cylinder, 23 - U-shaped frame, 24 - V-shaped roller, 25 - guiding shaft, 26 - lower annular block, 27 - upper annular block, 28 - semi-circular clamping groove, 29 - cushion block, 30 - positioning block, 31 - third material supporting rack, 32 - third oil cylinder, 33 - material supporting block, 34 - material supporting groove, 35 - guiding rod, 36 - supporting block, 37 - connecting rod, 38 - guide post, 39 - material pushing oil cylinder, 40 - supporting seat, 41 - supporting plate, 42 - supporting leg, 43 - hydraulic station, 44 - fence, 45 - blank. Detailed implementation manners

[0037] Next, it will be combined with the appended Figure 1-16The technical solutions in the embodiments of the present invention are clearly and completely described. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. All other embodiments obtained by those of ordinary skill in the art based on the embodiments of the present invention without creative efforts shall fall within the protection scope of the present invention.

[0038] The present invention provides a technical solution: a horizontal cold drawing machine, which includes a base 1. A die-changing mechanism 2 is fixed at the left end of the base 1. A blank-removing mechanism 3 is arranged on the left side of the die-changing mechanism 2. An elevating first blank-supporting frame 4 and a second blank-supporting frame 5 are arranged on the right side of the die-changing mechanism 2. A punch 6 is arranged on the second blank-supporting frame 5. A punch-changing mechanism 7 is arranged at the right end of the punch 6. A sliding seat 8 is fixed at the right end of the punch-changing mechanism 7. A material-pushing mechanism 9 is fixed at the right end of the sliding seat 8. During operation, first, a die with a suitable size is replaced in the die-changing mechanism 2 according to requirements, and a punch 6 with a suitable size is replaced through the punch-changing mechanism 7. Then, the second blank-supporting frame 5 is adjusted to support the left end of the punch 6. Then, the blank 45 is placed on the first blank-supporting frame 4, and the height of the first blank-supporting frame 4 is adjusted so that the center of the blank 45, the center of the die in the die-changing mechanism 2, and the center of the punch 6 are on the same horizontal line. Then, the material-pushing mechanism 9 is started to push the sliding seat 8 to slide leftward, thereby driving the punch 6 and the punch-changing mechanism 7 to move leftward. The punch 6 will slowly be sleeved into the blank 45 until the left end face of the punch 6 touches the right bottom surface of the blank 45. At this time, the punch 6 will drive the blank 45 to be extruded into the die in the die-changing mechanism 2. During this extrusion process, the blank 45 is stretched, and the stretched blank 45 will come out from the left end of the die-changing mechanism 2. Finally, the blank is removed through the blank-removing mechanism 3. During this blank-removing process, the material-pushing mechanism 9 moves in the reverse direction until the sliding seat 8, the punch-changing mechanism 7, and the punch 6 return to their original positions, waiting for the drawing of the next blank 45. It should be noted here that the diameter of the punch 6 is smaller than the inner diameter of the blank 45, that is to say, there is a certain gap between the punch 6 and the blank 45 after the punch 6 is sleeved into the blank 45, and the inner diameter of the die in the die-changing mechanism 2 is between the diameter of the punch 6 and the inner diameter of the blank 45. The specific sizes of these three can be calculated in advance through formulas. Through the settings of the die-changing mechanism 2 and the punch-changing mechanism 7 of the present invention, it is convenient to replace the die in the die-changing mechanism 2 and the punch 6. In this way, a cold drawing machine can adapt to blanks 45 of various different sizes, with wide adaptability, and at the same time, it also greatly saves costs. In addition, the cold drawing machine is set to be horizontal. Compared with the vertical type, on the one hand, it saves space, and on the other hand, it is convenient to operate, greatly improving the stability and safety of the cold drawing machine.

[0039] The die change mechanism 2 includes a fixed part 10 and a detachable part 11. A groove 12 is formed on the right side surface of the fixed part 10, and a through hole 13 is formed on the left side surface of the groove 12. A first semi-circular die placement groove 14 is arranged inside the groove 12. The bottom of the detachable part 11 is provided with a second semi-circular die placement groove 15 that matches the first semi-circular die placement groove 14. The first semi-circular die placement groove 14 is for placing the die. The outer diameter of the die remains unchanged all the time, while the inner diameter of the die changes. In this way, the die can always be placed into the first semi-circular die placement groove 14, and the center of the die and the center of the through hole 13 are always on the same horizontal straight line without the need for adjustment, which is very convenient for replacement. When the die needs to be replaced, only the detachable part 11 needs to be disassembled, and the pre-prepared die is placed into the first semi-circular die placement groove 14. Then the detachable part 11 is closed and fixed to the fixed part 10. The fixed part 10 and the detachable part 11 can be fixed by screws, which is both firmly fixed and convenient for disassembly.

[0040] The blanking mechanism 3 includes a clamping structure 16 and a blank receiving rack 17 arranged on the left side of the clamping structure 16. The clamping structure 16 is arranged on the left side surface of the fixed part 10 and includes two symmetrical sub-clamping structures 18. The sub-clamping structure 18 includes a first oil cylinder 19. The end of the telescopic rod of the first oil cylinder 19 is fixed with a clamping block 20. The clamping block 20 is slidably connected to the left side surface of the fixed part 10. A semi-circular clamping groove 21 is formed on the side of the clamping block 20 away from the first oil cylinder 19. During the blank pushing process of the blank pushing mechanism 9, the two sub-clamping structures 18 are in a separated state. When the extruded blank 45 completely passes through the die change mechanism 2, that is, when the right end of the extruded blank 45 just exits the die change mechanism 2, the blank pushing mechanism 9 will stop running. At the same time, the clamping structure 16 will be activated. The two originally separated sub-clamping structures 18 will move towards each other until they clamp the completed extruded blank 45. Then the blank pushing mechanism 9 will be activated to run in the reverse direction, pulling the punch 6 back to the original position to the right, so that the punch 6 and the blank 45 that were originally firmly attached are well separated. After the separation is completed, the two sub-clamping structures 18 will separate, causing the blank 45 to fall onto the blank receiving rack 17. Blanking through the arrangement of the blank receiving rack 17 on the left side of the clamping structure 16 is both simple and efficient.

[0041] The first blank supporting frame 4 includes a second oil cylinder 22 fixed on the base 1. The end of the telescopic rod of the second oil cylinder 22 is fixed with a U-shaped frame 23. Several V-shaped rollers 24 are rotatably connected inside the U-shaped frame 23. Two guide shafts 25 are fixed on the bottom surface of the U-shaped frame 23. Guide holes matching the guide shafts 25 are opened on the base 1. By setting the first blank supporting frame 4 in this form, lifting can be achieved, so that the center of blanks 45 of different sizes can be adjusted to adapt to blanks 45 of different sizes. The setting of the V-shaped rollers 24 well prevents the blanks 45 from falling, and also greatly reduces the resistance when they are pushed, facilitating the pushing. The setting of the guide shafts 25 well limits the U-shaped frame 23 and ensures its stability at the same time. The structure of the second blank supporting frame 5 is the same as that of the first blank supporting frame 4.

[0042] The punch replacement mechanism 7 includes an upper annular block 27 fixedly connected to the slide block 8 and a lower annular block 26 detachably connected to the upper annular block 27. A semi-circular clamping groove 28 is provided at the right end of the lower annular block 26. The diameter of the semi-circular clamping groove 28 is larger than the inner diameter of the lower annular block 26. A cushion block 29 is fixed inside the semi-circular clamping groove 28. The cushion block 29 is fixedly connected to the slide block 8. A positioning block 30 is clamped inside the semi-circular clamping groove 28 on the left side of the cushion block 29. A punch 6 is fixed at the center position of the left side surface of the positioning block 30. When the punch 6 needs to be replaced, first remove the lower annular block 26. The upper annular block 27 and the lower annular block 26 can be connected by screws. Then take out the punch 6 and the positioning block 30 together. The punch 6 and the positioning block 30 are integrated, and both are replaced together during replacement. Keeping the size of the positioning block 30 unchanged, the size of the punch 6 changes. After the required new punch 6 and positioning block 30 are made, the two are fixed together. Then put the two into the punch replacement mechanism 7. When placing, just align the positioning block 30 with the semi-circular clamping groove 28 on the left side of the cushion block 29 and snap it in. In this way, good positioning is achieved. In this way, no matter what size the punch 6 is, its center is always coincident, so that subsequent adjustment of the center of the punch 6 is not required. The cushion block 29 is fixedly connected to the slide block 8 and will not be disassembled. The setting of the cushion block 29 plays a good role in limiting and protecting.

[0043] A liftable third material supporting frame 31 is provided below the lower annular block 26. The third material supporting frame 31 includes a third oil cylinder 32 fixed on the base 1. A material supporting block 33 is fixed at the end of the telescopic rod of the third oil cylinder 32. A material supporting groove 34 matching the lower annular block 26 is formed on the material supporting block 33. Two guide rods 35 are fixed on the bottom surface of the material supporting block 33. Guide holes matching the guide rods 35 are formed on the base 1. The setting of the third material supporting frame 31 plays a very good auxiliary role in replacing the punch 6. When the lower annular block 26 is disassembled to replace the punch 6, the third material supporting frame 31 is in the state of rising to support the lower annular block 26 at this time. In this way, it can prevent the lower annular block 26 and the punch 6 from falling downward during the disassembly process. On the one hand, it plays a very good protective role for the lower annular block 26 and the punch 6 to avoid being damaged. On the other hand, it ensures the safety of the disassembly and assembly workers. After the punch 6 is replaced, the third material supporting frame 31 will be in the descending state, thus not affecting the leftward sliding of the slide seat 8.

[0044] A support block 36 is fixed at the right end of the base 1. Four guide columns 38 are provided between the support block 36 and the die changing mechanism 2. The support block 36, the die changing mechanism 2 and the guide columns 38 are locked into a whole by the connecting rod 37 nuts. The slide seat 8 is slidably connected to all four guide columns 38. The setting of the support block 36, the connecting rod 37 and the four guide columns 38 makes the whole cold drawing machine more stable and stronger in strength. Moreover, after the four guide columns 38 are set, a four-corner and eight-sided guide rail can be set on the slide seat 8, so that the slide seat 8 runs more stably and accurately.

[0045] The material pushing mechanism 9 includes a material pushing oil cylinder 39. The material pushing oil cylinder 39 penetrates through the support block 36 and is fixedly connected to the support block 36. The end of the telescopic rod of the material pushing oil cylinder 39 is fixed on the slide seat 8. A support seat 40 is fixed near the rear end of the material pushing oil cylinder 39. When pushing the material, the slide seat 8 is mainly pushed to slide left and right by the material pushing oil cylinder 39.

[0046] The upper surface of the support block 36 is fixed on the left end of the support plate 41. Two support legs 42 are fixed at the right end of the support plate 41. A hydraulic station 43 is fixed on the support plate 41. A fence 44 is provided around the hydraulic station 43. The setting of the hydraulic station 43 is not only set at a high place of the cold drawing machine, but also a fence is added to increase safety. At the same time, the support block 36 is reused, saving resources.

[0047] Working principle: During operation, first, replace the mold with the appropriate size in the mold changing mechanism 2 according to requirements, and replace the punch 6 with the appropriate size through the punch changing mechanism 7. Then, adjust the second blank supporting frame 5 to support the left end of the punch 6. After that, place the blank 45 on the first blank supporting frame 4 and adjust the height of the first blank supporting frame 4 so that the center of the blank 45, the center of the mold in the mold changing mechanism 2, and the center of the punch 6 are on the same horizontal line. Then, start the material pushing mechanism 9 to push the slide seat 8 to slide leftward, thereby driving the punch 6 and the punch changing mechanism 7 to move leftward. The punch 6 will slowly fit into the blank 45 until the left end face of the punch 6 touches the right bottom surface of the blank 45. At this time, the punch 6 will drive the blank 45 to be extruded into the mold in the mold changing mechanism 2. During this extrusion process, the blank 45 is stretched, and the stretched blank 45 will come out from the left end of the mold changing mechanism 2. Finally, the blank is ejected through the blank ejecting mechanism 3. During this blank ejecting process, the material pushing mechanism 9 moves in the reverse direction until the slide seat 8, the punch changing mechanism 7, and the punch 6 return to their original positions, waiting for the drawing of the next blank 45. It should be noted here that the diameter of the punch 6 is smaller than the inner diameter of the blank 45, that is, there is a certain gap between the punch 6 and the blank 45 after the punch 6 fits into the blank 45, and the inner diameter of the mold in the mold changing mechanism 2 is between the diameter of the punch 6 and the inner diameter of the blank 45. The specific sizes of these three can be calculated in advance through formulas. Through the settings of the mold changing mechanism 2 and the punch changing mechanism 7 of the present utility model, it is convenient to replace the mold and the punch 6 in the mold changing mechanism 2. In this way, a cold drawing machine can adapt to blanks 45 of various different sizes, with a wide adaptability, and at the same time, it also greatly saves costs. In addition, setting the cold drawing machine in this horizontal form, compared with the vertical form, on the one hand, it saves space, and on the other hand, it is convenient for operation, greatly improving the stability and safety of the cold drawing machine.

[0048] Although the embodiments of the present utility model have been shown and described, for those of ordinary skill in the art, it can be understood that various changes, modifications, substitutions, and variations can be made to these embodiments without departing from the principles and spirit of the present utility model. The scope of the present utility model is defined by the appended claims and their equivalents.

Claims

1. A horizontal cold drawing machine, characterized in that: The invention comprises a base (1), a mold changing mechanism (2) is fixed at the left end of the base (1), a material stripping mechanism (3) is provided on the left side of the mold changing mechanism (2), a first material supporting frame (4) and a second material supporting frame (5) which can be lifted and lowered are provided on the right side of the mold changing mechanism (2), a punch (6) is provided on the second material supporting frame (5), a punch changing mechanism (7) is provided at the right end of the punch (6), a slide seat (8) is fixed at the right end of the punch changing mechanism (7), and a material pushing mechanism (9) is fixed at the right end of the slide seat (8).

2. A horizontal cold drawing machine according to claim 1, characterized in that: The mold changing mechanism (2) comprises a fixed part (10) and a detachable part (11); a groove (12) is provided on the right side surface of the fixed part (10); a through hole (13) is provided on the left side surface of the groove (12); a first semicircular mold placement groove (14) is provided in the groove (12); and a second semicircular mold placement groove (15) matching the first semicircular mold placement groove (14) is provided at the bottom of the detachable part (11).

3. A horizontal cold drawing machine according to claim 2, characterized in that: The stripping mechanism (3) comprises a clamping structure (16) and a material receiving frame (17) arranged on the left side of the clamping structure (16); the clamping structure (16) is arranged on the left side surface of the fixing portion (10), and comprises two symmetrical sub-clamping structures (18); the sub-clamping structure (18) comprises a first oil cylinder (19); a clamping block (20) is fixed to the end of the telescopic rod of the first oil cylinder (19); the clamping block (20) is slidably connected to the left side surface of the fixing portion (10); and a semicircular clamping groove (21) is provided on the side of the clamping block (20) away from the first oil cylinder (19).

4. A horizontal cold drawing machine according to claim 1, characterized in that: The first support frame (4) comprises a second oil cylinder (22) fixed on the base (1); a U-shaped frame (23) is fixed to the end of the telescopic rod of the second oil cylinder (22); a plurality of V-shaped rollers (24) are rotatably connected inside the U-shaped frame (23); two guide shafts (25) are fixed on the bottom surface of the U-shaped frame (23); and a guide hole matching the guide shaft (25) is provided on the base (1).

5. A horizontal cold drawing machine according to claim 1, characterized in that: The punch replacement mechanism (7) comprises an upper annular block (27) fixedly connected to the slide (8) and a lower annular block (26) detachably connected to the upper annular block (27); a semicircular groove (28) is provided at the right end of the lower annular block (26); the diameter of the semicircular groove (28) is larger than the inner diameter of the lower annular block (26); a cushion block (29) is fixed in the semicircular groove (28); the cushion block (29) is fixedly connected to the slide (8); a positioning block (30) is clamped in the semicircular groove (28) on the left side of the cushion block (29); and the punch (6) is fixed at the center position of the left side surface of the positioning block (30).

6. A horizontal cold drawing machine according to claim 5, characterized in that: A third material support frame (31) that can be lifted and lowered is provided below the lower annular block (26). The third material support frame (31) comprises a third oil cylinder (32) fixed on the base (1). A material support block (33) is fixed to the end of a telescopic rod of the third oil cylinder (32). A material support groove (34) matching the lower annular block (26) is provided on the material support block (33). Two guide rods (35) are fixed on the bottom surface of the material support block (33). A guide hole matching the guide rods (35) is provided on the base (1).

7. A horizontal cold drawing machine according to claim 1, characterized in that: A support block (36) is fixed to the right end of the base (1), and four guide pillars (38) are provided between the support block (36) and the mold changing mechanism (2). The support block (36), the mold changing mechanism (2) and the guide pillars (38) are locked into a whole through a connecting rod (37) and a nut, and the slide seat (8) is slidably connected to the four guide pillars (38).

8. A horizontal cold drawing machine according to claim 7, characterized in that: The pushing mechanism (9) comprises a pushing cylinder (39), the pushing cylinder (39) passes through the support block (36) and is fixedly connected to the support block (36), the end of the telescopic rod of the pushing cylinder (39) is fixed on the slide seat (8), and a support seat (40) is fixed near the rear end of the pushing cylinder (39).

9. A horizontal cold drawing machine according to claim 7, characterized in that: The upper surface of the support block (36) is fixed to the left end of a support plate (41), two support legs (42) are fixed to the right end of the support plate (41), a hydraulic station (43) is fixed to the support plate (41), and a fence (44) is provided around the periphery of the hydraulic station (43).

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