Stainless steel tube drawing machine

Abstract

The utility model relates to a stainless steel pipe drawing machine which comprises a rack, a drawing die and a drawing trolley, the drawing die is fixedly arranged on the rack, the drawing trolley is arranged on the rack in a sliding mode and located on one side of the drawing die, the drawing trolley is in transmission connection with a driving source, and a head shrinking mechanism is arranged on the rack and located on the other side of the drawing die. The head shrinking mechanism comprises a first forming block and a second forming block which are horizontally and symmetrically distributed along the axis of a drawing die forming hole, and the first forming block and the second forming block are arranged on the rack in a sliding mode and are in transmission connection with a first hydraulic cylinder and a second hydraulic cylinder which are arranged on the rack correspondingly. The opposite faces of the first forming block and the second forming block are provided with a first profiled groove and a second profiled groove which are matched with each other correspondingly, a plurality of traction wheels distributed along the axis of a drawing die forming hole are rotationally arranged on the portion, located on one side of the head shrinking mechanism, of the rack, and the traction wheels are in transmission connection with a first motor arranged on the rack. The stainless steel tube drawing machine can save manpower and improve the production efficiency.

Description

Technical Field

[0001] The utility model relates to the technical field of stainless steel pipe production equipment, in particular to a stainless steel pipe drawing machine. Background Art

[0002] The production process of stainless steel pipes includes cold drawing. The cold drawing of stainless steel pipes is generally completed by a drawing machine. The specific working process is to pass one end of the stainless steel pipe to be drawn through the drawing die, and the drawing trolley clamps the end of the stainless steel pipe passing through the die. The stainless steel pipe is pulled by the drawing trolley to continuously pass through the drawing die, so that the diameter of the stainless steel pipe is reduced under the stress of the drawing die to complete the cold drawing of the stainless steel pipe. However, the drawing machine in the prior art needs to perform tube shrinkage forging on the end of the stainless steel pipe before drawing the stainless steel pipe so that it can pass through the drawing die. In this way, the stainless steel pipe that has been forged at the end needs to be transferred to the cold drawing machine for cold drawing, which wastes manpower and affects production efficiency.

[0003] In view of the above problems, the present invention makes improvements. Summary of the invention

[0004] The utility model provides a stainless steel pipe drawing machine, which solves the above problems existing in the prior art during use.

[0005] The technical solution of the utility model is achieved in this way:

[0006] A stainless steel pipe drawing machine comprises a frame, a drawing die and a drawing trolley, the drawing die is fixedly arranged on the frame, the drawing trolley is slidably arranged on the frame at one side of the drawing die and the drawing trolley is transmission connected to a driving source, a shrinking mechanism is arranged on the frame at the other side of the drawing die, the shrinking mechanism comprises a first forming block and a second forming block horizontally symmetrically distributed along the axis of a forming hole of the drawing die, the first forming block and the second forming block are slidably arranged on the frame and are transmission connected to a first hydraulic cylinder and a second hydraulic cylinder arranged on the frame respectively, matching first and second forming grooves are respectively arranged on opposite surfaces of the first forming block and the second forming block, a plurality of traction wheels distributed along the axis of the forming hole of the drawing die are rotatably arranged on one side of the shrinking mechanism on the frame, and the plurality of traction wheels are transmission connected to a first motor arranged on the frame.

[0007] Preferably, the frame is provided with an opening below the drawing trolley, the frame is provided with two first linear guide rails respectively located on both sides of the opening, the drawing trolley is fixedly connected to the slide seat of the first linear guide rails, the frame is provided with two transmission chains located in the opening and below the drawing trolley, the transmission chain is connected to the second motor provided on the frame, and the drawing trolley is fixedly connected to the two transmission chains.

[0008] Preferably, the frame is provided with two second linear guide rails below the first forming block and the second forming block and perpendicular to the axis of the forming hole of the drawing die, the first forming block and the second forming block are fixedly connected to the slide seat of the second linear guide rail, the first hydraulic cylinder is located on one side of the first forming block and its output shaft is fixedly connected to the first forming block, and the second hydraulic cylinder is located on one side of the second forming block and its output shaft is fixedly connected to the second forming block.

[0009] Preferably, one of the traction wheels is drivingly connected to the output shaft of the first motor, and two adjacent traction wheels are drivingly connected to a synchronous belt via a synchronous wheel.

[0010] Preferably, the clamping mechanism on the frame is located between the traction wheel and the retracting mechanism, and the clamping mechanism includes a support frame, a first clamping block, a second clamping block and a first cylinder. The first clamping block is fixedly arranged on the frame and located in the support frame. The first cylinder is arranged on the support frame and the output shaft penetrates into the support frame and is fixedly connected to the second clamping block, so that the second clamping block is located above the first clamping block and opposite to the first clamping block. A plurality of first guide rods are fixedly connected to the first clamping block and pass upward through the second clamping block.

[0011] Preferably, a plurality of second guide rods are fixedly connected to the first forming block, a plurality of second guide holes matching the second guide rods are formed on the second forming block, and the second guide rods penetrate into the second guide holes.

[0012] Preferably, a material unloading mechanism is provided on the frame below the drawing trolley, and the material unloading mechanism includes a material unloading plate, a material unloading bracket and a second cylinder. The material unloading plate is arranged at an angle, and the higher end of the material unloading plate is located below the drawing trolley, and the lower end extends out of the frame and is connected with the storage rack. Several of the second cylinders are arranged below the higher end of the material unloading plate and the output shafts of the second cylinders face upward, and several of the material unloading brackets are fixedly connected to the output shafts of several second cylinders one by one, and a through hole for the material unloading bracket to pass through is opened on the material unloading plate.

[0013] Preferably, a guide wheel is rotatably connected to the unloading bracket.

[0014] To sum up, the beneficial effect of the utility model is that before the stainless steel tube passes through the drawing die, the end of the stainless steel tube is shrunk by the shrinking mechanism, so that the end of the stainless steel tube can directly pass through the forming hole of the drawing die for cold drawing, eliminating the trouble of transferring the stainless steel tube multiple times, saving manpower, and improving production efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] In order to more clearly illustrate the embodiments of the utility model or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the utility model. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative labor.

[0016] Figure 1 It is a structural schematic diagram of the utility model;

[0017] Figure 2 for Figure 1 The enlarged schematic diagram of point A in the middle;

[0018] Figure 3 It is a structural schematic diagram of another perspective of the utility model;

[0019] Figure 4 It is a structural schematic diagram of the head-shrinking mechanism in the utility model;

[0020] Figure 5 It is a structural schematic diagram of the clamping mechanism in the utility model;

[0021] Figure 6 It is a structural schematic diagram of the feeding mechanism in the utility model.

[0022] In the figure: 1, frame; 21, drawing die; 22, drawing trolley; 23, first linear guide rail; 24, transmission chain; 25, second motor; 31, first forming block; 32, second forming block; 33, first hydraulic cylinder; 331, first groove; 34, second hydraulic cylinder; 341, second groove; 342, second guide hole; 35, second linear guide rail; 36, second guide rod; 41, traction wheel; 42, first motor; 51, support frame; 52, first clamping block; 53, second clamping block; 54, first cylinder; 55, first guide rod; 61, blanking plate; 611, through hole; 62, blanking bracket; 63, second cylinder; 64, storage rack; 65, guide wheel. DETAILED DESCRIPTION

[0023] The following will be combined with the attached embodiment of the utility model Figure 1-6 , clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of them. Based on the embodiments of the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0024] As shown in the figure, a stainless steel pipe drawing machine includes a frame 1, a drawing die 21 and a drawing trolley 22, wherein the drawing die 21 is fixedly arranged on the frame 1, the drawing trolley 22 is slidably arranged on the frame 1 and located on one side of the drawing die 21, and the drawing trolley 22 is connected to the driving source by transmission, and a shrinking mechanism is arranged on the frame 1 on the other side of the drawing die 21, and the shrinking mechanism includes a first forming block 31 and a second forming block 32 horizontally symmetrically distributed along the axis of the forming hole of the drawing die 21, the first forming block 31 and the second forming block 32 are slidably arranged on the frame 1 and are respectively connected to the first hydraulic cylinder 33 and the second hydraulic cylinder 34 arranged on the frame 1, and the first forming block 31 and the second forming block 32 are respectively provided with matching first grooves 331 and second grooves 341 on the opposite surfaces, and a plurality of traction wheels 41 distributed along the axis of the forming hole of the drawing die 21 are rotatably arranged on one side of the shrinking mechanism on the frame 1, and the plurality of traction wheels 41 are connected to the first motor 42 arranged on the frame 1 by transmission.

[0025] Specifically, the pulling trolley 22 is slidably arranged on the frame 1 and is transmission-connected to the driving source:

[0026] The frame 1 is provided with an opening below the drawing trolley 22, and the frame 1 is provided with two first linear guide rails 23 respectively located on both sides of the opening, and the drawing trolley 22 is fixedly connected to the slide seat of the first linear guide rail 23, and the frame 1 is provided with two transmission chains 24 located in the opening and below the drawing trolley 22, and the transmission chain 24 is transmission-connected to a second motor 25 provided on the frame 1, and the drawing trolley 22 is fixedly connected to the two transmission chains 24, and the second motor 25 drives the two transmission chains 24 to move synchronously, and the two transmission chains 24 drive the drawing trolley 22 to slide on the first linear guide rail to achieve movement close to or away from the drawing die 21, and the first linear guide rail 23 ensures the stability and smoothness of the drawing trolley 22 when sliding.

[0027] Specifically, the first forming block 31 and the second forming block 32 are slidably disposed on the frame 1 and are respectively connected to the first hydraulic cylinder 33 and the second hydraulic cylinder 34 in a transmission manner:

[0028] The frame 1 is provided with two second linear guide rails 35 below the first forming block 31 and the second forming block 32 and perpendicular to the axis of the forming hole of the drawing die 21. The first forming block 31 and the second forming block 32 are fixedly connected to the slide seat of the second linear guide rail 35. The first hydraulic cylinder 33 is located on one side of the first forming block 31 and its output shaft is fixedly connected to the first forming block 31. The second hydraulic cylinder 34 is located on one side of the second forming block 32 and its output shaft is fixedly connected to the second forming block 32. The first hydraulic cylinder 33 and the second hydraulic cylinder 34 respectively drive the first forming block 31 and the second forming block 32 to slide on the second linear guide rail 35 to realize the movement of closing or separating the first forming block 31 and the second forming block 32, and ensure that the first forming block 31 and the second forming block 32 have sufficient force to deform and shrink the end of the stainless steel pipe when closing. The second linear guide rail 35 ensures the stability and smoothness of the first forming block 31 and the second forming block 32 when sliding.

[0029] Specifically, the structure in which the traction wheel 41 is transmission-connected to the first motor 42 is as follows:

[0030] One of the traction wheels 41 is connected to the output shaft of the first motor 42, and the two adjacent traction wheels 41 are connected to the synchronous belt through the synchronous wheel. The first motor 42 drives the traction wheel 41 connected thereto to rotate, and the cooperation between the synchronous wheel and the synchronous belt drives the remaining traction wheels 41 to rotate synchronously.

[0031] In the above embodiment, the stainless steel pipe to be cold drawn is placed on a plurality of traction wheels 41, and the first motor 42 drives the traction wheels 41 to drive the stainless steel pipe to move toward the shrinking mechanism. When the stainless steel pipe moves to a point where its end is located between the first forming block 31 and the second forming block 32, the first motor 42 stops working, and the first hydraulic cylinder 33 and the second hydraulic cylinder 34 synchronously drive the first forming block 31 and the second forming block 32 to move toward each other, and the end of the stainless steel pipe is clamped in the first groove 331 and the second groove 341. When the first groove 331 and the second groove 341 are completely merged with the movement of the first forming block 31 and the second forming block 32, the first hydraulic cylinder 33 and the second hydraulic cylinder 34 act on the first groove 331 and the second groove 341 to move the stainless steel pipe toward the shrinking mechanism. 31 and the second groove 341 squeeze and shrink the end of the stainless steel pipe. Then, after the first forming block 31 and the second forming block 32 are reset, the motor works again to drive the traction wheel 41 to drive the stainless steel pipe to pass through between the first forming block 31 and the second forming block 32 and move toward the drawing die 21 and pass through the forming hole of the drawing die 21. Then, the drawing carriage 22 is driven by the second motor 25 to move toward the drawing die 21 and clamp the end of the stainless steel pipe passing through the forming hole of the drawing die 21. And under the drive of the second motor 25, the drawing carriage 22 moves in the direction away from the drawing die 21 and drives the stainless steel pipe to continuously pass through the forming hole of the drawing die 21. Under the stress of the forming hole of the drawing die 21, the cold drawing operation of the stainless steel pipe is completed. Through the above structure and method, before the stainless steel tube passes through the drawing die 21, the end of the stainless steel tube is shrunk by the shrinking mechanism, so that the end of the stainless steel tube can directly pass through the forming hole of the drawing die 21 for cold drawing, eliminating the trouble of transferring the stainless steel tube multiple times, saving manpower, and improving production efficiency.

[0032] Preferably, a plurality of second guide rods 36 are fixedly connected to the first forming block 31, and a plurality of second guide holes 342 matching the second guide rods 36 are opened on the second forming block 32. The second guide rods 36 penetrate into the second guide holes 342, and the second guide rods 36 and the second guide holes 342 cooperate to guide the movement of the first forming block 31 and the second forming block 32 to close together, further ensuring the stability and accuracy of the first forming block 31 and the second forming block 32 when cooperating to shrink the end of the stainless steel pipe.

[0033] Furthermore, the clamping mechanism on the frame 1 is located between the traction wheel 41 and the retracting mechanism, and the clamping mechanism includes a support frame 51, a first clamping block 52, a second clamping block 53 and a first cylinder 54. The first clamping block 52 is fixedly arranged on the frame 1 and located in the support frame 51. The first cylinder 54 is arranged on the support frame 51 and the output shaft penetrates into the support frame 51 and is fixedly connected to the second clamping block 53, so that the second clamping block 53 is located above the first clamping block 52 and opposite to the first clamping block 52. The first clamping block 52 is fixedly connected to a plurality of first guide rods 55 that pass upward through the second clamping block 53.

[0034] In the above preferred embodiment, when the stainless steel pipe moves and penetrates between the first forming block 31 and the second forming block 32, it passes between the first clamping block 52 and the second clamping block 53 and is placed on the first clamping block 52. While the first forming block 31 and the second forming block 32 cooperate with each other to shrink the end of the stainless steel pipe, the first cylinder 54 drives the second clamping block 53 to move toward the second clamping block 53 and cooperate with the first clamping block 52 to clamp the stainless steel pipe, ensuring that the stainless steel pipe remains stable when the shrinking mechanism shrinks the stainless steel pipe, thereby ensuring stability and accuracy during the shrinking process.

[0035] Furthermore, a material unloading mechanism is provided on the frame 1 below the drawing trolley 22, and the material unloading mechanism includes a material unloading plate 61, a material unloading bracket 62 and a second cylinder 63. The material unloading plate 61 is arranged at an angle, and the higher end of the material unloading plate 61 is located below the drawing trolley 22, and the lower end extends out of the frame 1 and is connected with the storage rack 64. Several of the second cylinders 63 are arranged below the higher end of the material unloading plate 61 and the output shafts of the second cylinders 63 face upward, and several of the material unloading brackets 62 are fixedly connected to the output shafts of several second cylinders 63 one by one, and the material unloading plate 61 is provided with a through hole 611 for the material unloading bracket 62 to pass through.

[0036] In the above preferred embodiment, when the drawing trolley 22 drives the stainless steel tube to move and cooperates with the drawing die 21 to complete the cold drawing operation, a plurality of second cylinders 63 drive the unloading bracket 62 to move upward to support the stainless steel tube, and after the drawing trolley 22 releases the clamping of the stainless steel tube, the second cylinder 63 drives the unloading bracket 62 to move downward, and the unloading bracket 62 gradually passes through the through hole 611 to make the stainless steel tube contact with the unloading plate 61, and when the unloading bracket 62 completely passes through the through hole 611 and is located under the unloading plate 61, the stainless steel tube completely leaves the unloading bracket 62 and rolls along the unloading plate 61 and rolls onto the storage rack 64, thereby realizing automatic unloading of the stainless steel tube, further saving manpower and improving production efficiency.

[0037] Preferably, the blanking bracket 62 is rotatably connected with a guide wheel 65. When the blanking bracket 62 moves upward, the stainless steel pipe falls into the wheel groove of the guide wheel 65 to support the stainless steel pipe. Through the setting of the guide wheel 65, when the drawing trolley 22 drives the stainless steel pipe to perform cold drawing operation, the second cylinder 63 at different positions drives the blanking bracket 62 and the guide wheel 65 to move upward to support the stainless steel pipe (that is, the blanking bracket 62 close to the drawing die 21 first moves upward to support the stainless steel pipe), so that the stainless steel pipe can be supported when it is driven by the drawing trolley 22 and completely passes through the drawing die 21, thereby enhancing the stability of the stainless steel pipe during the cold drawing operation.

[0038] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

Claims

1. A stainless steel pipe drawing machine, comprising a frame (1), a drawing die (21) and a drawing trolley (22), wherein the drawing die (21) is fixedly arranged on the frame (1), the drawing trolley (22) is slidably arranged on the frame (1) and is located on one side of the drawing die (21), and the drawing trolley (22) is drivingly connected to a driving source, characterized in that: A head shrinking mechanism is arranged on the frame (1) at the other side of the drawing die (21), and the head shrinking mechanism comprises a first forming block (31) and a second forming block (32) which are horizontally symmetrically distributed along the axis of the forming hole of the drawing die (21); the first forming block (31) and the second forming block (32) are slidably arranged on the frame (1) and are respectively transmission-connected to a first hydraulic cylinder (33) and a second hydraulic cylinder (34) which are arranged on the frame (1); matching first grooves (331) and second grooves (341) are respectively arranged on opposite surfaces of the first forming block (31) and the second forming block (32); a plurality of traction wheels (41) which are distributed along the axis of the forming hole of the drawing die (21) and are rotationally arranged on one side of the head shrinking mechanism on the frame (1); the plurality of traction wheels (41) are transmission-connected to a first motor (42) which is arranged on the frame (1).

2. A stainless steel pipe drawing machine according to claim 1, characterized in that: The frame (1) is provided with an opening located below the drawing trolley (22); the frame (1) is provided with two first linear guide rails (23) respectively located on both sides of the opening; the drawing trolley (22) is fixedly connected to a slide seat of the first linear guide rails (23); the frame (1) is provided with two transmission chains (24) located in the opening and below the drawing trolley (22); the transmission chains (24) are transmission-connected to a second motor (25) provided on the frame (1); and the drawing trolley (22) is fixedly connected to the two transmission chains (24).

3. A stainless steel pipe drawing machine according to claim 2, characterized in that: The frame (1) is provided with two second linear guide rails (35) below the first molding block (31) and the second molding block (32) and perpendicular to the axis of the molding hole of the drawing die (21); the first molding block (31) and the second molding block (32) are fixedly connected to the slide seat of the second linear guide rail (35); the first hydraulic cylinder (33) is located on one side of the first molding block (31) and its output shaft is fixedly connected to the first molding block (31); the second hydraulic cylinder (34) is located on one side of the second molding block (32) and its output shaft is fixedly connected to the second molding block (32).

4. A stainless steel pipe drawing machine according to claim 3, characterized in that: One of the traction wheels (41) is drivingly connected to the output shaft of the first motor (42), and two adjacent traction wheels (41) are drivingly connected to a synchronous belt via a synchronous wheel.

5. A stainless steel pipe drawing machine according to claim 1, characterized in that: The frame (1) is provided with a clamping mechanism between the traction wheel (41) and the head-shrinking mechanism, the clamping mechanism comprising a support frame (51), a first clamping block (52), a second clamping block (53) and a first cylinder (54); the first clamping block (52) is fixedly arranged on the frame (1) and located in the support frame (51); the first cylinder (54) is arranged on the support frame (51) and the output shaft penetrates into the support frame (51) and is fixedly connected to the second clamping block (53), so that the second clamping block (53) is located above the first clamping block (52) and opposite to the first clamping block (52); the first clamping block (52) is fixedly connected with a plurality of first guide rods (55) that pass upward through the second clamping block (53).

6. A stainless steel pipe drawing machine according to claim 1, characterized in that: A plurality of second guide rods (36) are fixedly connected to the first forming block (31), a plurality of second guide holes (342) matching the second guide rods (36) are formed on the second forming block (32), and the second guide rods (36) penetrate into the second guide holes (342).

7. A stainless steel pipe drawing machine according to claim 1, characterized in that: A material unloading mechanism is arranged on the frame (1) below the drawing trolley (22), and the material unloading mechanism comprises a material unloading plate (61), a material unloading bracket (62) and a second cylinder (63). The material unloading plate (61) is arranged at an angle, the higher end of the material unloading plate (61) is located below the drawing trolley (22), and the lower end extends out of the frame (1) and is connected to a material storage rack (64). A plurality of the second cylinders (63) are arranged below the higher end of the material unloading plate (61) and the output shafts of the second cylinders (63) face upwards. A plurality of the material unloading brackets (62) are fixedly connected one by one to the output shafts of the plurality of second cylinders (63). A through hole (611) is provided on the material unloading plate (61) for the material unloading brackets (62) to pass through.

8. A stainless steel pipe drawing machine according to claim 7, characterized in that: A guide wheel (65) is rotatably connected to the unloading bracket (62).

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