Chain type steel pipe cold-drawing device
By designing the stable main parts, grippers and spring systems in the connection unit, the problem of unstable steel pipe stress in the chain steel pipe cold drawing device is solved, and the stability of the cold drawing process and the quality of the finished product is improved.
Patent Information
- Application Number
- CN202421065448.7
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-05-16
- Publication Date
- 2025-05-06
- Estimated Expiration
- 2034-05-16
AI Technical Summary
The steel pipe is unstable during the cold drawing process of traditional chain steel pipe cold drawing devices, resulting in defects in the finished product.
The connection unit is designed, including a stabilizing main part, a gripper, a counterweight adjustment block and a spring. Through relative movement and change in the pressure cavity volume, the force during the cold drawing process is maintained, and the internal pressure is adjusted using hydraulic oil and multiple springs to ensure that the gripper applies a stable force to the steel pipe.
The stability of the cold drawing process is achieved, the cold drawing effect is improved, the finished product defects are reduced, and the overall performance of the cold drawing device is improved.
Smart Images
Figure CN222830366U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the technical field of steel pipe cold drawing, in particular to a chain type steel pipe cold drawing device. Background Art
[0002] Using a cold drawing machine to cold draw steel pipes is to stretch the seamless steel pipes through the cold drawing unit at room temperature. The diameter of the product is reduced and the length is increased. It has the advantages of high dimensional accuracy and low surface roughness. Relying on these characteristics, steel pipe cold drawing machines are widely used.
[0003] The traditional chain-type steel pipe cold drawing device is limited by the chain transmission. The force on the steel pipe during the cold drawing process is not stable, but changes rapidly and continuously within a smaller range. The force on the steel pipe during the cold drawing process directly affects the cold drawing effect. Unstable force will cause defects on the finished product. Utility Model Content
[0004] The utility model aims to provide a chain type steel pipe cold drawing device, which can achieve stable force applied to the steel pipe during the cold drawing process through the design of a connecting unit, thereby improving the cold drawing effect of the cold drawing device.
[0005] The utility model provides a chain type steel pipe cold drawing device, comprising:
[0006] A connecting unit, the connecting unit comprising a stabilizing main part, a gripper, a counterweight adjustment block and a first spring;
[0007] The stabilizing main part is composed of a pressure chamber and an adjusting chamber, the pressure chamber and the adjusting chamber are connected, through holes are provided in the middle of the end surfaces of the pressure chamber and the adjusting chamber which are away from each other, and an annular protrusion is integrally formed at the lower end of the inner wall of the adjusting chamber;
[0008] A gripper is slidably mounted in the opening of the pressure chamber, and the gripper is sealed and fitted against the inner wall of the opening of the pressure chamber;
[0009] A counterweight adjustment block is slidably assembled in the opening of the adjustment cavity, and the counterweight adjustment block is sealed and fitted with the inner wall of the opening of the adjustment cavity;
[0010] The first spring is located in the adjustment cavity, and two ends of the first spring are respectively against the annular protrusion of the longitudinal portion and the bottom surface of the counterweight adjustment block.
[0011] Preferably, it further comprises a cold-drawn car, which is fixedly connected to the connecting unit, and the cold-drawn car further comprises a chain and wheels, the chain drives the cold-drawn car to move, and the wheels are installed on both sides of the cold-drawn car.
[0012] Preferably, the invention further comprises a track, wherein the track is located under the wheels.
[0013] Preferably, it also includes a transition chamber, which is opened in the stabilizing main component, the transition chamber is located between the pressure chamber and the regulating chamber, and the transition chamber connects the pressure chamber and the regulating chamber.
[0014] Preferably, the regulating chamber is filled with hydraulic oil.
[0015] Preferably, it also includes a second spring, which is located in the adjustment cavity. The second spring is sleeved on the counterweight adjustment block. A boss is provided at the bottom end of the counterweight adjustment block. The two ends of the second spring respectively abut against the bottom boss and the through hole of the adjustment cavity.
[0016] Preferably, it also includes a cold drawing unit, which is located in front of the cold drawing vehicle. The cold drawing unit includes a cold drawing ring and a fixed block. The fixed block is provided with a cold drawing through hole. The cold drawing ring is fixedly connected to the fixed block, and the cold drawing ring and the cold drawing through hole are concentric.
[0017] Preferably, it further comprises a supporting unit, wherein the supporting unit comprises a supporting body, the supporting body is located below the cold-drawing vehicle, and the supporting body is distributed in parallel along the moving direction of the cold-drawing vehicle.
[0018] Preferably, a lifter is further included, and each of the supporting bodies is individually connected to one of the lifters.
[0019] Preferably, it further comprises a collecting rod, wherein the collecting rod and the supporting body are spaced apart.
[0020] The technical solution of the utility model realizes the force applied to the steel pipe during the stable cold drawing process through the design of the connecting unit. When the force applied by the chain changes, the stabilizing main part and the gripper will move relative to each other to change the volume of the pressure chamber, thereby driving the internal pressure of the stabilizing main part to produce a changing trend. At this time, the counterweight adjustment block will be displaced to change the volume of the adjustment chamber to ensure the stability of the internal pressure of the stabilizing main part, and the spring will be compressed during the displacement so that the counterweight adjustment block can be reset in the subsequent process. The stable internal pressure of the stabilizing main part can make the force applied to the steel pipe by the gripper more stable, thereby ultimately improving the cold drawing effect of the cold drawing device. BRIEF DESCRIPTION OF THE DRAWINGS
[0021] In order to more clearly illustrate the specific implementation methods of the utility model or the technical solutions in the prior art, the drawings required for use in the specific implementation methods or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are some implementation methods of the utility model. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.
[0022] Figure 1 This is a schematic diagram of the structure of the chain-type steel pipe cold drawing device of the utility model;
[0023] Figure 2 for Figure 1 A cross-sectional view showing the positional relationship of the cold drawing rings in the chain-type steel pipe cold drawing device;
[0024] Figure 3 for Figure 1 Position relationship diagram of the support unit in the chain-type steel pipe cold drawing device;
[0025] Figure 4 for Figure 1 Cross-sectional view of the main stabilizing part in the chain-type steel pipe cold drawing device;
[0026] Figure 5 for Figure 1 Cross-sectional view of the cold drawing unit in the chain-type steel pipe cold drawing device.
[0027] Description of reference numerals:
[0028] 1. Connecting unit; 11. Stabilizing main part; 111. Pressure chamber; 112. Adjusting chamber; 113. Transition chamber; 12. Gripper; 13. Counterweight adjusting block; 14. First spring; 15. Second spring; 2. Cold-drawn car; 21. Chain; 22. Wheel; 221. Track; 3. Cold-drawn unit; 31. Cold-drawn ring; 32. Fixing block; 4. Support unit; 41. Support body; 42. Lifter; 43. Collecting rod. DETAILED DESCRIPTION
[0029] The technical solution of the utility model will be described clearly and completely in conjunction with the embodiments below. Obviously, the described embodiments are part of the embodiments of the utility model, not all of the embodiments. 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.
[0030] In the description of the present invention, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise" and the like indicating directions or positional relationships are based on the directions or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific direction, be constructed and operated in a specific direction, and therefore should not be understood as a limitation on the present invention.
[0031] In the description of the present utility model, it should be understood that the terms "first" and "second" are only used for descriptive purposes, and should not be understood as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Therefore, the features defined as "first" and "second" may explicitly or implicitly include one or more of the features. In the description of the present utility model, "multiple" means two or more, unless otherwise clearly and specifically defined. In addition, the terms "installed", "connected", and "connected" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be directly connected, or indirectly connected through an intermediate medium, or it can be the internal communication of two components. For those of ordinary skill in the art, the specific meanings of the above terms in the present utility model can be understood according to specific circumstances.
[0032] Combination Figures 1 to 5 As shown, a chain-type steel pipe cold drawing device provided by the utility model includes a connecting unit 1.
[0033] Combination Figures 1 to 5 As shown, the connecting unit 1 includes a stabilizing main component 11, a gripper 12, a counterweight adjustment block 13 and a first spring 14; the stabilizing main component 11 is composed of a pressure chamber 111 and an adjustment chamber 112, the pressure chamber 111 and the adjustment chamber 112 are connected, and a through hole is provided in the middle of the end faces of the pressure chamber 111 and the adjustment chamber 112 that are away from each other, and an annular protrusion is integrally formed at the lower end of the inner wall of the adjustment chamber 112; the gripper 12 is slidably assembled in the opening of the pressure chamber 111, and the gripper 12 is sealed and fitted with the inner wall of the opening of the pressure chamber 111; the counterweight adjustment block 13 is slidably assembled in the opening of the adjustment chamber 112, and the counterweight adjustment block 13 is sealed and fitted with the inner wall of the opening of the adjustment chamber 112; the first spring 14 is located in the adjustment chamber 112, The two ends of the first spring 14 respectively abut against the annular protrusion of the longitudinal part and the bottom surface of the counterweight adjustment block 13. The above design can stabilize the force applied to the steel pipe during the cold drawing process. When the force applied by the chain 21 changes, the stabilizing main component 11 and the gripper 12 will move relative to each other to change the volume of the pressure chamber 111, thereby driving the internal pressure of the stabilizing main component 11 to produce a changing trend. At this time, the counterweight adjustment block 13 will be displaced to change the volume of the adjustment chamber 112 to ensure the internal pressure of the stabilizing main component 11 is stable, and the first spring 14 is compressed during the displacement process so that the counterweight adjustment block 13 can be reset in the subsequent process. The stable internal pressure of the stabilizing main component 11 can make the force applied to the steel pipe by the gripper 12 more stable, thereby ultimately improving the cold drawing effect of the cold drawing device.
[0034] In some embodiments, in combination Figures 1 to 3As shown, the cold-drawn device also includes a cold-drawn car 2, which is fixedly connected to the connecting unit 1. The cold-drawn car 2 is equipped with a chain 21 and a wheel 22. The chain 21 drives the cold-drawn car 2 to move. The wheels 22 are installed on both sides of the cold-drawn car 2. The cold-drawn car 2 is a power actuator for cold drawing processing. By adding wheels 22 and rails 221, a guiding effect is provided for the movement of the cold-drawn car 2 to ensure the stability of the movement of the cold-drawn car.
[0035] In some embodiments, in combination Figure 1 , Figure 2 As shown, the cold drawing device further includes a track 221, and the track 221 is located under the wheel 22. The track 221 is used to precisely control the motion trajectory of the cold drawing vehicle 2, thereby improving the operation stability of the cold drawing vehicle 2 during the cold drawing process.
[0036] In some embodiments, in combination Figure 4 As shown, the cold drawing device also includes a transition chamber 113, and the transition chamber 113 is opened in the stabilizing main component 11. The transition chamber 113 is located between the pressure chamber 111 and the regulating chamber 112, and the transition chamber 113 connects the pressure chamber 111 and the regulating chamber 112. The transition chamber 113 is added to provide a transition space for the pressure chamber 111 and the regulating chamber 112, which can avoid excessive displacement of the gripper 12 in the pressure chamber 111 when it moves, affecting the normal operation of the connecting unit 1, and at the same time provides sufficient buffer space for the change of pressure in the stabilizing main component 11.
[0037] In some embodiments, in combination Figure 4 As shown, the regulating chamber (112) is filled with hydraulic oil, and the filling of the hydraulic oil can better transmit the pressure in the stabilizing main component 11, thereby improving the performance of the stabilizing unit 1.
[0038] In some embodiments, in combination Figure 1 , Figure 2 As shown, the cold drawing device also includes a second spring 15, which is located in the adjustment cavity 112. The second spring 15 is sleeved on the counterweight adjustment block 13. A boss is provided at the bottom end of the counterweight adjustment block 13. The two ends of the second spring 15 respectively abut against the bottom boss and the through hole of the adjustment cavity 112. The second spring 15 provides the force that should be provided by the counterweight adjustment block 13 through its own weight, so that the counterweight adjustment block 13 can better adjust the pressure in the stabilizing main component 11.
[0039] In some embodiments, in combination Figure 1 , Figure 5As shown, the cold drawing device also includes a cold drawing unit 3, which is located in front of the cold drawing vehicle 2. The cold drawing unit 3 includes a cold drawing ring 31 and a fixed block 32. The fixed block 32 is provided with a cold drawing through hole. The cold drawing ring 31 is fixedly connected to the fixed block 32, and the cold drawing ring 31 and the cold drawing through hole are concentric. The cold drawing unit 3 is an important component of the cold drawing device, and the cold drawing ring 31 can directly control the size and quality of the cold drawn finished product.
[0040] In some embodiments, in combination Figure 1 , Figure 3 As shown, the cold drawing device also includes a support unit 4, and the support unit 4 includes a support body 41. The support body 41 is located below the cold drawing vehicle 2, and the support body 41 is distributed parallel to the movement direction of the cold drawing vehicle 2. The support unit 4 can provide support for the cold drawn finished product to prevent the product from being deformed and affecting the quality of the product.
[0041] In some embodiments, in combination Figure 1 , Figure 3 As shown, the cold drawing device also includes a lifter 42, and each of the support bodies 41 is individually connected to a lifter 42. When the product needs to be supported, the support body 41 is raised to provide support for the product. At the same time, the same support body 41 can also adapt to products of different sizes. When the cold drawing car 2 passes by or discharges materials, the height of the support body 41 is lowered to avoid interference or discharge.
[0042] In some embodiments, in combination Figure 1 , Figure 3 As shown, the support unit 4 also includes a collecting rod 43, and the collecting rod 43 and the support body 41 are spaced apart. When discharging, the lifter 42 lowers the height of the support body 41 so that the product contacts the collecting rod 43, and finally the product is collected to one side of the cold drawing device.
[0043] Working process: one end of the steel pipe to be processed passes through the cold drawing unit 3 and is connected by the gripper 12 in the connecting unit 1. After the connection is completed, the cold drawing vehicle 2 is driven by the chain 21 to move, and the cold drawing vehicle 2 will drive the connecting unit 1 to move together. The gripper 12 in the connecting unit 1 will also drive the steel pipe to pass through the cold drawing unit 3, and the cold drawing unit 3 will perform cold drawing on the steel pipe. During the movement of the cold drawing vehicle 2, the driving force of the chain 21 is not stable in the process of driving the cold drawing vehicle 2. When the driving force applied by the chain 21 changes, the cold drawing vehicle 2 will be The stabilizing main component 11 and the gripper 12 undergo relative movement to change the volume of the pressure chamber 111, driving the internal pressure of the stabilizing main component 11 to produce a changing trend. At this time, the counterweight adjustment block 13 will be displaced to change the volume of the adjustment chamber 112 to ensure the internal pressure of the stabilizing main component 11 is stable, and the first spring 14 and the second spring 15 are compressed during the displacement process so that the counterweight adjustment block 13 can be reset in the subsequent process; at the same time, during the movement of the cold-drawn car 2, the support bodies 41 in the support unit 4 will rise one by one under the action of the lifter 42 to provide support for the product.
[0044] When the cold drawing is completed, the gripper 12 of the cold drawing vehicle 2 will release the product, so that the product is completely supported by the support unit 4; at this time, the support body 41 will descend under the action of the lifter 42, and the product begins to contact the collecting rod 43. After the support body 41 completes its descent, the product will be collected to one side of the cold drawing device under the action of the collecting rod 43.
[0045] Finally, it should be noted that the above embodiments are only used to illustrate the technical solution of the utility model, rather than to limit it. Although the utility model has been described in detail with reference to the aforementioned embodiments, ordinary technicians in this field should understand that they can still modify the technical solutions recorded in the aforementioned embodiments, or replace some or all of the technical features therein with equivalents. However, these modifications or replacements do not make the essence of the corresponding technical solution deviate from the scope of the technical solution of the embodiments of the utility model.
Claims
1. A chain type steel pipe cold drawing device, characterized in that: include: A connecting unit (1), the connecting unit (1) comprising a stabilizing main part (11), a gripper (12), a counterweight adjustment block (13) and a first spring (14); A stabilizing main component (11), which is composed of a pressure chamber (111) and an adjusting chamber (112); the pressure chamber (111) and the adjusting chamber (112) are connected; through holes are provided in the middle of the end surfaces of the pressure chamber (111) and the adjusting chamber (112) which are away from each other; and an annular protrusion is integrally formed at the lower end of the inner wall of the adjusting chamber (112); A gripper (12) is slidably mounted in the opening of the pressure chamber (111), and the gripper (12) is sealed against the inner wall of the opening of the pressure chamber (111); A counterweight adjustment block (13) is slidably mounted in the opening of the adjustment chamber (112), and the counterweight adjustment block (13) is sealed and fitted with the inner wall of the opening of the adjustment chamber (112); A first spring (14) is located in the adjustment cavity (112), with two ends of the first spring (14) respectively resting against the annular protrusion of the longitudinal portion and the bottom surface of the counterweight adjustment block (13).
2. The chain-type steel pipe cold drawing device according to claim 1, characterized in that: It also includes a cold-drawn car (2), the cold-drawn car (2) is fixedly connected to the connection unit (1), the cold-drawn car (2) also includes a chain (21) and wheels (22), the chain (21) drives the cold-drawn car (2) to move, and the wheels (22) are installed on both sides of the cold-drawn car (2).
3. The chain-type steel pipe cold drawing device according to claim 2, characterized in that: It also includes a track (221), wherein the track (221) is located under the wheel (22).
4. The chain-type steel pipe cold drawing device according to claim 1, characterized in that: The invention also includes a transition chamber (113), wherein the transition chamber (113) is opened in the stabilizing main component (11), the transition chamber (113) is located between the pressure chamber (111) and the regulating chamber (112), and the transition chamber (113) communicates with the pressure chamber (111) and the regulating chamber (112).
5. The chain-type steel pipe cold drawing device according to claim 4, characterized in that: The regulating chamber (112) is filled with hydraulic oil.
6. The chain-type steel pipe cold drawing device according to claim 1, characterized in that: It also includes a second spring (15), which is located in the adjustment cavity (112). The second spring (15) is sleeved on the counterweight adjustment block (13). The bottom end of the counterweight adjustment block (13) is provided with a boss. The two ends of the second spring (15) respectively abut against the bottom boss and the through hole of the adjustment cavity (112).
7. The chain-type steel pipe cold drawing device according to claim 2, characterized in that: The invention also comprises a cold drawing unit (3), wherein the cold drawing unit (3) is located in front of the cold drawing vehicle (2), and the cold drawing unit (3) comprises a cold drawing ring (31) and a fixing block (32), wherein the fixing block (32) is provided with a cold drawing through hole, the cold drawing ring (31) is fixedly connected to the fixing block (32), and the cold drawing ring (31) and the cold drawing through hole are concentric.
8. The chain type steel pipe cold drawing device according to claim 2, characterized in that: It also comprises a support unit (4), the support unit (4) comprising a support body (41), the support body (41) is located below the cold-drawn vehicle (2), and the support body (41) is distributed in parallel along the movement direction of the cold-drawn vehicle (2).
9. The chain-type steel pipe cold drawing device according to claim 8, characterized in that: It also includes a lifter (42), and each of the supporting bodies (41) is individually connected to one of the lifters (42).
10. The chain-type steel pipe cold drawing device according to claim 8, characterized in that: It also comprises a collecting rod (43), wherein the collecting rod (43) and the supporting body (41) are spaced apart from each other.