A necking device for stainless steel tube drawing belt

Abstract

The utility model discloses a stainless steel pipe wire drawing with necking device relates to stainless steel pipe necking processing technical field. The utility model discloses a fixed bin, wire drawing die, necking die and connecting bin, and the bottom of fixed bin is provided with cooperation chamber, and the upper portion is fixed with necking die in cooperation chamber, and the lower portion is fixed with wire drawing die in cooperation chamber, and the top of wire drawing die and the bottom of necking die are mutually abutted, and the top of fixed bin is fixed with connecting column, and the top of connecting column is fixed with movable disc, and the outside of movable disc is provided with connecting bin. The utility model discloses through setting fixed bin, wire drawing die, necking die and connecting bin, has solved that the necking and wire drawing need step -by -step processing in stainless steel pipe processing and handle, and the working efficiency is relatively low, and the stainless steel pipe that adjusts the processing device alignment processing is not enough convenient, and the advantage of the utility model is: the necking and wire drawing need not step -by -step processing in stainless steel pipe processing and handle, and the working efficiency is higher, and the adjustment handles structure alignment steel pipe more convenient.

Description

Technical Field

[0001] This utility model belongs to the field of stainless steel pipe necking technology, and in particular relates to a stainless steel pipe necking device with a ribbon drawing. Background Technology

[0002] Brushing and necking are two important metalworking processes for stainless steel pipes, widely used in decoration, industrial piping, and furniture manufacturing. Brushing creates linear patterns, such as straight lines, random lines, or threads, on the surface of the steel pipe through mechanical friction, giving it a matte texture that is both aesthetically pleasing and scratch-resistant. Necking, on the other hand, reduces the diameter of the pipe end through external force, used for connection, assembly, or alteration of the cross-sectional area of ​​fluid channels. Processing methods include cold shrinking (such as spin necking and punch necking) and heat shrinking (suitable for thick-walled pipes or high-hardness materials). However, it still has the following drawbacks in practical applications:

[0003] In the processing of stainless steel pipes, the wire drawing and necking processes are usually carried out in two steps using two different machines. In actual production, two steps of feeding and unloading are required, which makes the process cumbersome and inefficient.

[0004] Secondly, during the processing, the processing equipment needs to be aligned with the constricted pipe. However, the overall adjustment through the main body adjustment structure is cumbersome and inconvenient. Utility Model Content

[0005] The purpose of this utility model is to provide a stainless steel pipe drawing and shrinking device. By setting up a fixed chamber, a drawing die, a shrinking die, and a connecting chamber, it solves the problems that shrinking and drawing need to be processed in separate steps in the processing of stainless steel pipes, resulting in low work efficiency and inconvenience in adjusting the processing device to align with the stainless steel pipe being processed.

[0006] To solve the above-mentioned technical problems, this utility model is achieved through the following technical solution:

[0007] This utility model relates to a stainless steel pipe drawing and shrinking device, comprising a fixed chamber, a drawing die, a shrinking die, and a connecting chamber. The fixed chamber has a mating cavity at its bottom. A shrinking die is fixed to the upper part of the mating cavity, and a drawing die is fixed to the lower part of the mating cavity. The top end of the drawing die abuts against the bottom end of the shrinking die. A connecting column is fixed to the top of the fixed chamber, and a movable disc is fixed to the top of the connecting column. The connecting chamber is located outside the movable disc. During operation, the drawing die and shrinking die are fixed within the fixed chamber. The drawing die draws the pipe after it enters the fixed chamber, and the shrinking die shrinks the pipe. The movable disc is installed in the connecting chamber to determine the position of the fixed chamber below the connecting chamber.

[0008] Furthermore, the drawing die has a movable opening along the central axis, and drawing bosses are fixed in a ring array on the inner wall of the movable opening. The drawing die has a movable opening at the center, and the drawing bosses distributed in a ring on the inner wall perform drawing operations when the pipe passes through. The movable opening provides an axial movement channel for the pipe, and the bosses form a thread-like pattern on the surface of the pipe through friction.

[0009] Furthermore, a guide port is fixed at the bottom of the wire drawing die. The guide port is fixed to the outside of the movable opening at the bottom of the wire drawing die. The guide port is welded to the bottom of the wire drawing die and has a trumpet-shaped expansion structure. Its function is to guide the tube to enter the movable opening accurately and avoid the phenomenon of jamming or uneven wire drawing caused by the tube end being skewed.

[0010] Furthermore, a narrowing hole is vertically opened in the narrowing die along the central axis. The narrowing hole is connected to the movable opening, and the central axis of the narrowing hole and the central axis of the movable opening are on the same straight line. The narrowing hole of the narrowing die and the movable opening of the wire drawing die are coaxially connected to form a continuous processing path. After the pipe is drawn, it directly enters the tapered narrowing hole and achieves pipe diameter reduction and forming under axial pressure.

[0011] Furthermore, a mounting rod is fixed at the center of the top of the connecting chamber, and a mounting plate is fixed at the top of the mounting rod. The mounting rod is rigidly connected to the connecting chamber, and the top mounting plate provides a flange interface with the lifting mechanism. This structure transmits the lifting power of the entire device to the fixed chamber, realizing the vertical displacement of the mold.

[0012] Furthermore, a movable opening is provided at the center of the bottom of the connecting chamber. The inner diameter of the movable opening is larger than the diameter of the connecting column, and the connecting column passes through the movable opening. The bottom of the connecting chamber outside the movable opening is connected to a clamping bolt in a ring array. The movable opening and the connecting column form a sliding pair. The clamping bolt is used to adjust the horizontal position. Loosening the bolt can adjust the horizontal coordinate of the mold. After locking, the positioning is achieved by the friction between the movable plate and the connecting chamber, ensuring that the wire drawing die and the tube are aligned.

[0013] This utility model has the following beneficial effects:

[0014] This invention solves the problem of low efficiency caused by the need for separate steps in the processing of stainless steel pipes, namely, the need for a fixed chamber, a drawing die, and a necking die. During operation, the lifting structure above the connecting chamber is activated, driving the fixed chamber to descend. This allows the end of the pipe fitting, which is constrained on the lower die, to be guided through the guide port into the movable opening within the drawing die. The drawing boss in the movable opening rises as the pipe fitting ascends, drawing the surface of the fitting. As the fitting continues to rise in the fixed chamber, it enters the necking hole of the necking die for necking. This eliminates the need for separate steps in the processing of stainless steel pipes, resulting in higher efficiency.

[0015] This invention solves the problem of inconvenient alignment of the processing device with the stainless steel pipe during processing by setting up a fixed chamber and a connecting chamber. After installing a pipe to be drawn and narrowed at the bottom, the clamping bolt at the bottom of the connecting chamber is loosened. Then, the fixed chamber, the connecting column at the top of the fixed chamber, and the movable plate are moved to change the position of the movable plate in the connecting chamber. The movable opening of the drawing die in the lower part of the fixed chamber is aligned with the pipe to be drawn. Then, the clamping bolt is rotated to press against the bottom of the movable plate, so that the movable plate is fixed in position in the connecting chamber. The position of the drawing die and the corresponding pipe are adjusted and set, making it more convenient to align the processing device with the stainless steel pipe during processing. Attached Figure Description

[0016] To more clearly illustrate the technical solutions of the embodiments of this utility model, the accompanying drawings used in the description of the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0017] Figure 1 A three-dimensional view of the partially cut-open structure of a stainless steel pipe drawing ribbon necking device;

[0018] Figure 2 This is a three-dimensional view of the structure of the fixed compartment after it has been cut open.

[0019] Figure 3 This is a three-dimensional view of the wire drawing die section after it has been cut open.

[0020] Figure 4 This is a three-dimensional view of the structure of the necking die section after it has been cut open.

[0021] Figure 5 This is a three-dimensional view of the connected compartment after it has been cut open.

[0022] Figure 6 This is a three-dimensional view of the assembly structure of a stainless steel pipe drawing and tape-reducing device.

[0023] Figure label:

[0024] 1. Fixed chamber; 101. Mating cavity; 102. Connecting column; 103. Movable plate; 2. Wire drawing die; 201. Movable opening; 202. Wire drawing boss; 203. Guide opening; 3. Narrowing die; 301. Narrowing hole; 4. Connecting chamber; 401. Mounting rod; 402. Mounting plate; 403. Movable opening; 404. Clamping bolt. Detailed Implementation

[0025] 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. Based on the embodiments of the present utility model, all other embodiments obtained by those skilled in the art without creative effort are within the protection scope of the present utility model. Specific Implementation

[0026] Please see Figure 1-4 This utility model relates to a device for narrowing and drawing stainless steel pipes, comprising a fixed chamber 1, a drawing die 2, a narrowing die 3, and a connecting chamber 4. The bottom end of the fixed chamber 1 has a mating cavity 101, which holds the drawing die 2 and the narrowing die 3. The narrowing die 3 is fixed at the upper part of the mating cavity 101, and narrowing is performed after the pipe enters the narrowing die 3. The drawing die 2 is fixed at the lower part of the mating cavity 101, and drawing is performed after the pipe enters. The top end of the drawing die 2 and the bottom end of the narrowing die 3 are aligned. The abutment allows the pipe fitting to directly undergo the shrinking process after wire drawing. A connecting column 102 is fixed at the top of the fixed chamber 1, which connects the fixed chamber 1 and the movable plate 103 together. A movable plate 103 is fixed at the top of the connecting column 102 and is used to support the fixed chamber 1. A connecting chamber 4 is provided on the outside of the movable plate 103. The movable plate 103 is movably connected to the connecting chamber 4, changing the relative position of the fixed chamber 1 and the corresponding shrinking pipe fitting below from a top view, so that the pipe fitting can correspond to the position of the wire drawing die 2.

[0027] Specifically, the drawing die 2 has a movable opening 201 along the central axis. The inner wall of the movable opening 201 is fixed with drawing bosses 202 in a ring array. The drawing die 2 is movably connected to the corresponding pipe through the movable opening 201. When the pipe enters the movable opening 201 of the drawing die 2, the drawing bosses 202 are used to draw the pipe on the surface.

[0028] Furthermore, a guide port 203 is fixed at the bottom of the wire drawing die 2. The guide port 203 is fixed outside the movable port 201 at the bottom of the wire drawing die 2. The wire drawing die 2 guides the pipes that need to be wire drawn and narrowed into the wire drawing die 2 through the guide port 203.

[0029] Furthermore, a narrowing hole 301 is vertically opened in the narrowing mold 3 along the central axis. The narrowing hole 301 is connected to the movable opening 201, and the central axis of the narrowing hole 301 and the central axis of the movable opening 201 are on the same straight line. The narrowing mold 3 performs the narrowing operation after the pipe enters through the narrowing hole 301.

[0030] The operation process of this embodiment is as follows: During operation, when it is necessary to perform wire drawing and necking work on the end of the pipe fitting, the lifting structure above the connecting chamber 4 is activated to drive the fixed chamber 1 to descend, so that the end of the pipe fitting, which is restricted on the lower mold, is guided through the guide port 203 into the movable port 201 in the wire drawing mold 2. The wire drawing boss 202 in the movable port 201 raises the pipe fitting in the movable port 201 of the wire drawing mold 2, and the wire drawing boss 202 performs wire drawing treatment on the surface of the pipe fitting. As the pipe fitting continues to rise in the fixed chamber 1, the pipe fitting enters the necking hole 301 of the necking mold 3 for necking treatment. After the lifting mechanism drives the fixed chamber 1 to rise, the demolding of the pipe fitting is completed. Specific Implementation

[0031] Please see Figure 1 , 2 5, 6. Based on the first specific embodiment, a mounting rod 401 is fixed at the center of the top of the connecting compartment 4, and a mounting plate 402 is fixed at the top of the mounting rod 401. The connecting compartment 4 is connected to the mounting plate 402 through the mounting rod 401, and is installed with the lifting structure through the mounting plate 402.

[0032] Specifically, a movable opening 403 is provided at the center of the bottom of the connecting chamber 4. The inner diameter of the movable opening 403 is larger than the diameter of the connecting column 102, and the connecting column 102 passes through the movable opening 403. The bottom of the connecting chamber 4 outside the movable opening 403 is connected to the clamping bolts 404 in a ring array. The connecting chamber 4 is provided with the connecting column 102 through the movable opening 403. After the clamping bolts 404 are rotated, the bottom of the movable plate 103 is restricted and fastened to the connecting chamber 4.

[0033] The operation process of this embodiment is as follows: During operation, when a pipe to be drawn and narrowed is installed below, the clamping bolt 404 at the bottom of the connecting chamber 4 is loosened, and then the fixed chamber 1, the connecting column 102 at the top of the fixed chamber 1, and the movable plate 103 are moved to change the position of the movable plate 103 in the connecting chamber 4. The movable opening 201 of the drawing die 2 in the lower part of the fixed chamber 1 is adjusted to align with the pipe to be drawn. Then the clamping bolt 404 is rotated to press against the bottom of the movable plate 103, so that the movable plate 103 is fixed in the connecting chamber 4 and the position of the drawing die 2 and the corresponding pipe are adjusted and set.

[0034] In the description of this specification, references to terms such as "an embodiment," "example," "specific example," etc., indicate that a specific feature, structure, material, or characteristic described in connection with that embodiment or example is included in at least one embodiment or example of the present invention. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples.

[0035] The preferred embodiments of this utility model disclosed above are merely illustrative of the present utility model. These preferred embodiments do not exhaustively describe all details, nor do they limit the utility model to the specific implementations described. Clearly, many modifications and variations can be made based on the content of this specification. This specification selects and specifically describes these embodiments to better explain the principles and practical applications of this utility model, thereby enabling those skilled in the art to better understand and utilize it. This utility model is limited only by the claims and their full scope and equivalents.

Claims

1. A device for narrowing the end of a stainless steel pipe drawing wire, comprising a fixing chamber (1), a drawing die (2), a narrowing die (3), and a connecting chamber (4), characterized in that: The fixed chamber (1) has a mating cavity (101) at its bottom end. A shrinking mold (3) is fixed in the upper part of the mating cavity (101), and a wire drawing mold (2) is fixed in the lower part of the mating cavity (101). The top end of the wire drawing mold (2) and the bottom end of the shrinking mold (3) abut against each other. A connecting column (102) is fixed in the top end of the fixed chamber (1), and a movable plate (103) is fixed in the top end of the connecting column (102). A connecting chamber (4) is provided on the outside of the movable plate (103).

2. The stainless steel pipe drawing ribbon necking device according to claim 1, characterized in that: The drawing die (2) has a movable opening (201) along the central axis, and drawing bosses (202) are fixed in a ring array on the inner wall of the movable opening (201).

3. The stainless steel pipe drawing ribbon shortening device according to claim 2, characterized in that: The bottom end of the wire drawing die (2) is fixed with a guide port (203), which is fixed outside the movable port (201) at the bottom end of the wire drawing die (2).

4. The stainless steel pipe drawing ribbon shortening device according to claim 3, characterized in that: The constriction mold (3) has a constriction hole (301) vertically extending along the central axis. The constriction hole (301) is connected to the movable opening (201), and the central axis of the constriction hole (301) and the central axis of the movable opening (201) are on the same straight line.

5. A stainless steel pipe drawing and tape-reducing device according to claim 1, characterized in that: An installation rod (401) is fixed at the center of the top of the connecting compartment (4), and an installation plate (402) is fixed at the top of the installation rod (401).

6. The stainless steel pipe drawing ribbon shortening device according to claim 1, characterized in that: The bottom center of the connecting chamber (4) has a movable opening (403). The inner diameter of the movable opening (403) is larger than the diameter of the connecting column (102), and the connecting column (102) passes through the movable opening (403). The bottom of the connecting chamber (4) outside the movable opening (403) is connected with a clamping bolt (404) in a ring array threaded connection.

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