Metal tube drawing and cutting mechanism

Abstract

The utility model relates to metal pipe production technical field, especially a kind of metal pipe drawing cutting mechanism, including the reel-off machine that is set gradually, drawing die holder, drawing machine, straightening machine group, cleaning machine group, saw cutting machine, conveyer, material turnover frame, the reel-off machine side is provided with straightening machine and hydraulic header machine, metal pipe is reel-off after reel-off machine passes through straightening machine straightening and is impacted to its end portion by hydraulic header machine to make its diameter smaller after entering drawing die holder.The metal pipe of the utility model comes out from reel-off machine, first straightening by straightening machine, eliminates initial bending, keeps linear state, provides stable foundation for drawing, improves finished product size precision and surface quality, then diameter is made smaller by the impact of hydraulic header machine to its end portion, reduces the frictional resistance of entering drawing die holder, reduces drawing force fluctuation, increases contact area with mould, engages closely, prevents slip or clamping mould, improves processing stability.

Description

Technical Field

[0001] This utility model relates to the field of metal tube manufacturing technology, and in particular to a metal tube drawing and cutting mechanism. Background Technology

[0002] Metal tube blanks need to be processed, such as forming and cutting, and then further processed to meet the requirements of actual production. In the existing technology, during the processing of metal tubes, the metal tubes coming out of the unwinding machine are often directly drawn. However, because the metal tubes coming out of the unwinding machine are curled, direct drawing will lead to problems such as tube twisting and uneven wall thickness. Therefore, the drawing effect is not ideal. Utility Model Content

[0003] This utility model solves the problems in related technologies and proposes a metal tube drawing and cutting mechanism. After the metal tube comes out of the unwinding machine, it is first straightened by a straightening machine to eliminate the initial bending and maintain a straight state, providing a stable foundation for drawing and improving the dimensional accuracy and surface quality of the finished product. Then, a hydraulic heading machine impacts the end to reduce its diameter, thereby reducing the frictional resistance when entering the drawing die, reducing the fluctuation of the drawing force, increasing the contact area with the die, ensuring tight engagement, preventing slippage or jamming, and improving processing stability.

[0004] To solve the above-mentioned technical problems, this utility model is achieved through the following technical solution: a metal tube drawing and cutting mechanism, comprising an unwinding machine, a drawing die base, a drawing machine, a straightening unit, a cleaning unit, a sawing machine, a conveyor, and a turning frame arranged in sequence. A straightening machine and a hydraulic heading machine are provided on one side of the unwinding machine. After the metal tube is unwound from the unwinding machine, it is straightened by the straightening machine and its diameter is reduced by impacting its end by the hydraulic heading machine before entering the drawing die base.

[0005] As a preferred embodiment, one side of the drawing die holder is provided with an external die oil injection machine and a drawing oil pump station connected by a pipeline. The external die oil injection machine is connected to the drawing die holder for injecting oil into the drawing die holder.

[0006] As a preferred embodiment, the cleaning unit is connected to the cleaning pump station. The cleaning unit includes a cleaning machine that is slidably mounted on the table, a probe bracket, a length measuring device, an inkjet box, and a guide sleeve. The cleaning machine includes a wiping plate, a spraying assembly, and a drying assembly.

[0007] As a preferred embodiment, the cleaning pump station includes a vertical gear oil pump and a housing. Gate valves are installed at the top and bottom of the housing. A level gauge and an air filter are installed inside the housing. The vertical gear oil pump is connected to the suction filter.

[0008] As a preferred embodiment, the sawing machine includes a frame and a guide roller assembly, a sawing assembly, and a clamping assembly slidably mounted on the frame. The sawing assembly includes a saw blade driven by a sawing motor, and the clamping assembly includes a clamping block driven by a clamping cylinder. The sawing assembly moves along the Y-axis direction under the drive of a second motor to cut the metal pipe.

[0009] As a preferred embodiment, the conveyor includes a conveying cylinder, a conveying motor, and four conveying wheels. The first and second conveying wheels are slidably mounted on a linear guide rail via a sliding block. The conveying cylinder drives the second conveying wheel to slide along the linear guide rail, and the first conveying wheel is driven to slide along the linear guide rail via an adjusting screw. The conveying motor drives the third conveying wheel to rotate.

[0010] As a preferred embodiment, the hydraulic heading machine includes a hydraulic system, a lubrication system, a base, and a heading machine. The heading machine is mounted on the base and includes a cylinder and a sliding block. The cylinder is connected to the hydraulic system and the lubrication system and drives the sliding block to reciprocate.

[0011] Compared with the prior art, the beneficial effects of this utility model are as follows: Before entering the drawing die, the metal tube exiting the unwinding machine is straightened by a straightening machine to eliminate initial bending and ensure it remains straight before entering the drawing die, providing a stable foundation for subsequent drawing. A metal tube with good straightness experiences more uniform force during drawing, avoiding problems such as uneven die wear and surface scratches caused by bending, thereby improving the dimensional accuracy and surface quality of the finished product. Furthermore, a hydraulic heading machine impacts the end to reduce its diameter, lowering the frictional resistance when the tube enters the drawing die, reducing drawing force fluctuations, and making the drawing process smoother. With a smaller diameter, the contact area between the tube and the die increases, resulting in a tighter fit. This effectively prevents the tube from slipping or getting stuck during the drawing process, improving processing stability. The drawing die holder is oiled by an external die oiling machine, which serves to lubricate, cool, clean, prevent rust, and improve product quality and die life. Before sawing, the metal tube is cleaned to remove any residual lubricant and coolant, as well as debris generated during the drawing process, to facilitate subsequent sawing. The sawing machine works with a length measuring device to achieve fixed-length sawing, and the tubes are conveyed to a turning rack via a conveyor. Finally, the cut metal tubes are collected into a collection basket on one side of the turning rack. Attached Figure Description

[0012] Figure 1 This is a front view of the overall structure of this utility model;

[0013] Figure 2 This is a top view of the overall structure of this utility model;

[0014] Figure 3 This is a schematic diagram of the structure of the cleaning unit of this utility model;

[0015] Figure 4 This is a schematic diagram of the structure of the cleaning machine of this utility model;

[0016] Figure 5 This is a schematic diagram of the sawing machine of this utility model;

[0017] Figure 6 This is a utility model Figure 5 Enlarged view of point A in the image;

[0018] Figure 7 This is a top view of the conveyor of this utility model;

[0019] Figure 8 This is a side view of the conveyor of this utility model;

[0020] Figure 9 This is a front view of the cleaning pump station of this utility model;

[0021] Figure 10 This is a side view of the cleaning pump station of this utility model;

[0022] Figure 11 This is a schematic diagram of the structure of the hydraulic heading machine of this utility model;

[0023] Figure 12 This is a schematic diagram of the structure of the heading machine when the sliding block is open;

[0024] Figure 13 This is a schematic diagram of the sliding block of the heading machine when it is closed.

[0025] In the picture:

[0026] 1. Unwinding machine; 2. Drawing die base; 3. Drawing machine; 4. Straightening unit; 5. Cleaning unit; 501. Cleaning machine; 5011. Wiping blade; 5012. Spray assembly; 5013. Drying assembly; 502. Probe bracket; 503. Length measuring device; 504. Ink tank; 505. Guide sleeve; 6. Sawing machine; 601. Frame; 602. Guide roller assembly; 6021. Vertical guide roller; 6022. Horizontal guide roller; 603. Sawing assembly; 6031. Sawing motor; 6032. Saw blade; 604. Clamp assembly; 6041. Clamp cylinder; 605. Second motor; 7. Conveyor. 701. Conveying cylinder; 702. Conveying motor; 703. First conveying wheel; 704. Second conveying wheel; 705. Third conveying wheel; 706. Adjusting screw; 707. Fourth conveying wheel; 8. Tilting frame; 9. External mold oiling machine; 10. Drawing oil pump station; 11. Cleaning pump station; 1101. Vertical gear oil pump; 1102. Housing; 1103. Gate valve; 1104. Air filter; 1105. Suction oil filter; 12. Straightening machine; 13. Hydraulic heading machine; 1301. Heading machine; 13011. Oil cylinder; 13012. Sliding block; 1302. Machine base; 14. Receiving basket. Detailed Implementation

[0027] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. The following description of at least one exemplary embodiment is merely illustrative and is in no way intended to limit the present utility model or its application or use. All other embodiments obtained by those skilled in the art based on the embodiments of the present utility model without creative effort are within the scope of protection of the present utility model.

[0028] It should be noted that the terminology used herein is for the purpose of describing particular embodiments only and is not intended to limit the exemplary embodiments according to this application. As used herein, the singular form is intended to include the plural form as well, unless the context clearly indicates otherwise. Furthermore, it should be understood that when the terms "comprising" and / or "including" are used in this specification, they indicate the presence of features, steps, operations, devices, components, and / or combinations thereof.

[0029] Unless otherwise specifically stated, the relative arrangement, numerical expressions, and values ​​of the components and steps described in these embodiments do not limit the scope of this invention. It should also be understood that, for ease of description, the dimensions of the various parts shown in the drawings are not drawn to actual scale. Techniques, methods, and devices known to those skilled in the art may not be discussed in detail, but where appropriate, such techniques, methods, and devices should be considered part of the specification. In all examples shown and discussed herein, any specific values ​​should be interpreted as merely exemplary and not as limitations. Therefore, other examples of exemplary embodiments may have different values. It should be noted that similar reference numerals and letters in the following drawings denote similar items; therefore, once an item is defined in one drawing, it need not be further discussed in subsequent drawings.

[0030] In the description of this utility model, it should be understood that the directional terms such as "front, back, up, down, left, right", "horizontal, vertical, horizontal" and "top, bottom" indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this utility model and simplifying the description. Unless otherwise stated, these directional terms do not indicate or imply that the device or element referred to must have a specific orientation or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation on the scope of protection of this utility model. The directional terms "inner" and "outer" refer to the inner and outer contours of each component itself.

[0031] For ease of description, spatial relative terms such as "above," "on top of," "on the upper surface of," "above," etc., are used herein to describe the spatial positional relationship of a device or feature as shown in the figures to other devices or features. It should be understood that spatial relative terms are intended to encompass different orientations in use or operation beyond the orientation of the device as described in the figures. For example, if the device in the figures were inverted, a device described as "above" or "on top of" other devices or structures would subsequently be positioned as "below" or "under" other devices or structures. Thus, the exemplary term "above" can include both "above" and "below." The device may also be positioned in other different ways (rotated 90 degrees or in other orientations), and the spatial relative descriptions used herein will be interpreted accordingly.

[0032] Furthermore, it should be noted that the use of terms such as "first" and "second" to define components is merely for the purpose of distinguishing the corresponding components. Unless otherwise stated, the above terms have no special meaning and therefore cannot be construed as limiting the scope of protection of this utility model.

[0033] like Figures 1 to 13 As shown, a metal tube drawing and cutting mechanism includes an unwinding machine 1, a drawing die base 2, a drawing machine 3, a straightening unit 4, a cleaning unit 5, a sawing machine 6, a conveyor 7, and a turning rack 8 arranged in sequence. A straightening machine 12 and a hydraulic heading machine 13 are arranged on one side of the unwinding machine 1. After the metal tube is unwound from the unwinding machine 1, it is straightened by the straightening machine 12 and its diameter is reduced by impacting its ends by the hydraulic heading machine 13 before entering the drawing die base 2. An unwinding loop is arranged on the side of the drawing die base 2 closest to the unwinding machine 1, and a drawing die is arranged on the side closest to the drawing machine 3. The drawing machine 3 uses a CN... The multi-wedge belt drawing machine disclosed in 223276951U uses a drawing machine 3 in conjunction with a drawing die 2 for drawing. After drawing, the metal tube is straightened by a straightening unit 4. The straightening unit 4 has horizontal and vertical straightening rollers, which can straighten the metal tube in both directions. Its structure is existing technology and will not be described in detail here. After the metal tube is straightened, it enters a cleaning unit 5 for cleaning. Then it is cut into the required size by a sawing machine 6. Then it is conveyed to a turning rack 8 by a conveyor 7, and finally the cut metal tube is collected into a collection basket 14 on one side of the turning rack 8.

[0034] In one embodiment, an external mold oiling machine 9 and a drawing oil pump station 10 are provided on one side of the drawing die base 2 and connected by a pipeline. The drawing oil pump station 10 supplies oil to the external mold oiling machine 9. The external mold oiling machine 9 is connected to the drawing die base 2 and is used to inject oil into the drawing die base 2. The structure of the external mold oiling machine 9 is shown in patent 202521737983.7.

[0035] In one embodiment, the cleaning unit 5 is connected to the cleaning pump station 11. The cleaning unit 5 includes a cleaning machine 501, a probe bracket 502, a length measuring device 503, an inkjet cartridge 504, and a guide sleeve 505. The cleaning machine 501 is slidably mounted on a linear guide rail. A detection probe can be installed on the probe bracket 502 to detect surface defects. The length measuring device 503 has an encoder and cooperates with the subsequent sawing machine 6 to achieve fixed-length sawing. The inkjet cartridge 504 here cooperates with the detection probe; after detecting a surface defect, the inkjet cartridge 504... Inkjet printing is used for marking; the cleaning machine 501 includes, in sequence, a wiping pad 5011, a spray assembly 5012, and a drying assembly 5013 mounted on the table. The wiping pad 5011 is mounted on the wiping pad seat and located on the side close to the straightening unit 4. It can block the liquid splashed out during the spraying process of the spray assembly 5012. The spray assembly 5012 is connected to the cleaning pump station 11. The cleaning pump station 11 pumps the cleaning liquid into the spray assembly 502 for spraying to clean the metal pipe. After cleaning, the metal pipe can be dried by the drying assembly 5013.

[0036] In one embodiment, the cleaning pump station 11 includes a vertical gear oil pump 1101 (model LBZ-25) and a housing 1102. Gate valves 1103 are installed on the upper and lower parts of the housing 1102. A level gauge is installed inside the housing 1102. A cover plate is installed on the top of the housing 1102. An air filter 1104 is installed on the cover plate and extends into the housing 1102. The vertical gear oil pump 1101 is connected to an oil suction filter 1105. The housing 1102 contains cleaning agent, which is pumped into the spray assembly 5012 by the vertical gear oil pump 1101 for spray cleaning.

[0037] In one embodiment, the sawing machine 6 includes a frame 601 and a guide roller assembly 602, a sawing component 603, and a clamping assembly 604 slidably mounted on the frame 601. Specifically, the guide roller assembly 602, the sawing component 603, and the clamping assembly 604 are mounted on a sliding base. The sliding base is mounted on a horizontally arranged linear guide rail via a slider. A first motor drives a gear set to drive the sliding base to slide horizontally along the linear guide rail. The guide roller assembly 602 includes two vertical guide rollers 6021 and two horizontal guide rollers 6022 mounted on a guide roller seat. The sawing component 603 includes a saw blade 6032 driven by a sawing motor 6031. The clamping assembly 604 includes a clamping cylinder 604. The sawing machine 6 is equipped with a clamping block driven by a clamping cylinder 6041. When the metal tube is transported to the sawing assembly 603 for sawing, the clamping block is driven by the clamping cylinder 6041 to fix the metal tube, ensuring the stability of the metal tube position during the cutting process and avoiding vibration or displacement. After the cutting is completed, the clamping block driven by the clamping cylinder 6041 releases the metal tube. The sawing machine 6 is also equipped with a sensor or laser rangefinder. The sensor or laser rangefinder cooperates with the encoder of the length measuring device 503 to measure the length or mark point of the metal tube, determine the cutting position, and achieve fixed-length cutting. The sawing assembly 603 is mounted on a vertically set linear guide rail by a slider and moves along the Y-axis under the drive of the second motor 605 to cut the metal tube.

[0038] In one embodiment, the conveyor 7 includes a conveying cylinder 701, a conveying motor 702, and four conveying wheels (a first conveying wheel 703, a second conveying wheel 704, a third conveying wheel 705, and a fourth conveying wheel 707). The first conveying wheel 703 and the second conveying wheel 704 are slidably mounted on a linear guide rail via a sliding block. The conveying cylinder 701 drives the second conveying wheel 704 to slide along the linear guide rail, thereby adjusting the distance between the second conveying wheel 704 and the third conveying wheel 705. The first conveying wheel 703 is driven to slide along the linear guide rail via an adjusting screw 706, thereby adjusting the distance between the first conveying wheel 703 and the fourth conveying wheel 707. The conveying motor 702 drives the third conveying wheel 705 to rotate to provide power for conveying the metal pipe. In addition, a fourth conveying wheel 707 is also provided. The first conveying wheel 703 and the fourth conveying wheel 707 serve as guides, while the second conveying wheel 704 and the third conveying wheel 705 serve as clamping wheels.

[0039] In one embodiment, the hydraulic heading machine 13 includes a hydraulic system, a lubrication system, a base 1302, and a heading machine 1301. The heading machine 1301 is mounted on the base 1302 and includes a cylinder 13011 and a sliding block 13012. The cylinder 13011 is connected to the hydraulic system and the lubrication system and drives the sliding block 13012 to reciprocate to pre-form the end of the metal tube.

[0040] The above are preferred embodiments of this utility model. Those skilled in the art can make changes and modifications to the above embodiments. Therefore, this utility model is not limited to the specific embodiments described above. Any obvious improvements, substitutions or modifications made by those skilled in the art based on this utility model shall fall within the protection scope of this utility model.

Claims

1. A metal tube drawing and cutting mechanism, characterized in that: The assembly includes an unwinding machine (1), a drawing die (2), a drawing machine (3), a straightening unit (4), a cleaning unit (5), a sawing machine (6), a conveyor (7), and a turning rack (8), arranged in sequence. The unwinding machine (1) is equipped with a straightening machine (12) and a hydraulic heading machine (13) on one side. After the metal tube is unwound from the unwinding machine (1), it is straightened by the straightening machine (12) and its end is impacted by the hydraulic heading machine (13) to reduce its diameter before entering the drawing die (2).

2. The metal tube drawing and cutting mechanism according to claim 1, characterized in that: The drawing die holder (2) is provided with an external die oil injection machine (9) and a drawing oil pump station (10) connected by a pipeline on one side. The external die oil injection machine (9) is connected to the drawing die holder (2) for injecting oil into the drawing die holder (2).

3. The metal tube drawing and cutting mechanism according to claim 1, characterized in that: The cleaning unit (5) is connected to the cleaning pump station (11). The cleaning unit (5) includes a cleaning machine (501), a probe bracket (502), a length measuring device (503), an inkjet box (504), and a guide sleeve (505) that are slidably installed on the table. The cleaning machine (501) includes a wiping pad (5011), a spray assembly (5012), and a drying assembly (5013).

4. The metal tube drawing and cutting mechanism according to claim 3, characterized in that: The cleaning pump station (11) includes a vertical gear oil pump (1101) and a housing (1102). Gate valves (1103) are installed on the upper and lower parts of the housing (1102). A level gauge and an air filter (1104) are installed inside the housing (1102). The vertical gear oil pump (1101) is connected to an oil suction filter (1105).

5. The metal tube drawing and cutting mechanism according to claim 1, characterized in that: The sawing machine (6) includes a frame (601) and a guide roller assembly (602) slidably mounted on the frame (601), a sawing assembly (603) and a clamping assembly (604). The sawing assembly (603) includes a saw blade (6032) driven by a sawing motor (6031), and the clamping assembly (604) includes a clamping block driven by a clamping cylinder (6041). The sawing assembly (603) moves along the Y-axis direction under the drive of a second motor (605) to cut the metal tube.

6. The metal tube drawing and cutting mechanism according to claim 1, characterized in that: The conveyor (7) includes a conveying cylinder (701), a conveying motor (702), and four conveying wheels. The first conveying wheel (703) and the second conveying wheel (704) are slidably mounted on a linear guide rail via a sliding block. The conveying cylinder (701) drives the second conveying wheel (704) to slide along the linear guide rail. The first conveying wheel (703) is driven to slide along the linear guide rail via an adjusting screw (706). The conveying motor (702) drives the third conveying wheel (705) to rotate.

7. The metal tube drawing and cutting mechanism according to claim 1, characterized in that: The hydraulic heading machine (13) includes a hydraulic system, a lubrication system, a base (1302), and a heading machine (1301). The heading machine (1301) is mounted on the base (1302) and includes a cylinder (13011) and a sliding block (13012). The cylinder (13011) is connected to the hydraulic system and the lubrication system and drives the sliding block (13012) to reciprocate.

Images