An adjustable roller die drawing device

Abstract

The present invention provides an adjustable roller die drawing device, which belongs to the field of mechanical preparation technology; it comprises a shell and a connecting plate, one vertical roller is vertically arranged on the lower surface of the connecting plate, and the other vertical roller is vertically arranged on the upper surface of the bottom end of the lower cavity of the shell, and the vertical roller group is used for longitudinally drawing the workpiece; the vertical roller adjustment mechanism is connected to the connecting plate for adjusting the distance between the vertical rollers, and two horizontal rollers are horizontally arranged on the inner walls on both sides of the lower cavity of the shell for transversely drawing the workpiece; the horizontal roller adjustment mechanism is connected to the horizontal roller group for adjusting the distance between the horizontal rollers; the guide is flush with the roller gap and is used to send the workpiece into the roller gap; the application can simply realize the adjustment of the roller gap size, ensure the stability of the equipment, strong adaptability and good stability.

Description

Technical Field

[0001] The invention relates to the technical field of mechanical preparation, in particular to an adjustable roller die drawing device. Background Art

[0002] Roller die drawing is a metalworking technology that combines rolling and cold drawing. By applying traction, the metal passes through the passive roller die hole and undergoes plastic deformation. Depending on the number of rollers forming the die hole, it can be divided into two-roller, three-roller, etc. The rollers that make up each die hole constitute a module. The roller die device is generally composed of several modules connected together and can be divided into two-link, three-link, four-link, etc. Its essence is to convert the sliding friction between the material and the die hole during fixed die drawing into rolling friction of well-lubricated bearings, thereby greatly reducing the drawing friction. Compared with traditional fixed die drawing, roller die drawing has many advantages such as low required drawing force, uniform deformation, high pass compression rate, less damage to the mold, high production efficiency, energy saving and environmental protection.

[0003] For rectangular small-section profiles, the preparation processes are mostly rolling, fixed die drawing and two-roller die drawing. However, most traditional processes have disadvantages such as complex equipment manufacturing, high drawing force, and cumbersome drawing and annealing passes, which consume a lot of manpower and material resources.

[0004] Compared to traditional processes for producing small rectangular cross-section profiles, four-roll die drawing generates rolling friction between the material and the die. This reduces contact friction resistance and increases axial compressive stress on the deformed metal, significantly improving the metal's plastic flow. Furthermore, lower friction reduces energy consumption, enabling high-speed diameter reduction and lower drawing forces during drawing.

[0005] However, current research on four-roll die drawing focuses primarily on process and pass design, with few patents addressing the design of complete die equipment. Four-roll die drawing has seen limited practical application, and there has been no systematic research on adjustable equipment for four-roll die drawing of small rectangular cross-sections. Furthermore, current four-roll die drawing systems are cumbersome to adjust the roll gap, face numerous limitations on workpiece types, and suffer from device instability. Summary of the Invention

[0006] The technical problem to be solved by the present invention is to provide an adjustable roller die drawing device to solve the technical problems of the existing roller die drawing device in that the adjustment of the roller gap size is cumbersome, the device has poor stability and many restrictions on the model of the drawn workpiece.

[0007] In order to solve the above technical problems, the present invention provides the following technical solutions:

[0008] An adjustable roller die drawing device, comprising: a shell,

[0009] and a connecting plate, the connecting plate being disposed in the inner cavity of the shell, the connecting plate dividing the inner cavity of the shell into an upper cavity and a lower cavity;

[0010] and a vertical roller group, which is arranged in the lower cavity of the shell, the vertical roller group includes at least two vertical rollers, one of which is vertically arranged on the lower surface of the connecting plate, and the other vertical roller is vertically arranged on the upper surface of the bottom end in the lower cavity of the shell, the two vertical rollers are symmetrically arranged, and the vertical roller group is used for longitudinal drawing of workpieces;

[0011] and, a vertical roller adjustment mechanism, disposed in the upper cavity of the inner cavity of the shell, the vertical roller adjustment mechanism being connected to the connecting plate and being used to adjust the distance between the vertical rollers;

[0012] and a horizontal roller group, arranged in the lower cavity of the inner cavity of the shell, the horizontal roller group including at least two horizontal rollers, the two horizontal rollers being horizontally arranged on the inner walls on both sides of the lower cavity of the inner cavity of the shell, the two horizontal rollers being symmetrically arranged, and the horizontal roller group being used for transversely drawing the workpiece;

[0013] and a horizontal roller adjustment mechanism disposed in the lower cavity of the inner cavity of the shell, the horizontal roller adjustment mechanism being connected to the horizontal roller group and being used to adjust the distance between the horizontal rollers;

[0014] As well as, a guide and a wedge-shaped feeler gauge; a clamping space is enclosed between the horizontal roller group and the vertical roller group, the guide is arranged outside the shell, and the guide is used to deliver the workpiece into the clamping space; the wedge-shaped feeler gauge is supported and inserted between the clamping space for measuring the size of the clamping space.

[0015] Preferably, the shell includes an upper fixed plate, a lower fixed plate and two groups of vertical plates, two groups of vertical plates are symmetrically provided at both ends of the lower fixed plate, an upper fixed plate is provided between the two groups of vertical plates, the upper fixed plate is parallel to the lower fixed plate, and the connecting plate is parallel to the lower fixed plate.

[0016] Preferably, the vertical roller adjustment mechanism includes a first adjustment rod, a transfer block and a vertical roller linear guide rail;

[0017] The shaft of the first adjusting rod is threadedly connected to the upper fixing plate, the input end of the first adjusting rod is arranged above the upper fixing plate, and the output end of the first adjusting rod is arranged below the upper fixing plate;

[0018] The adapter block is fixed on the upper surface of the connecting plate, and the output end of the first adjusting rod is connected to the adapter block; when the input end of the first adjusting rod rotates, the output end of the first adjusting rod drives the connecting plate to move longitudinally along the vertical roller linear guide rail through the adapter block.

[0019] Preferably, vertical roller linear guide rails are respectively provided on two opposite inner side walls of the housing for mounting the connecting plate, and both sides of the connecting plate are respectively slidably connected to the vertical roller linear guide rails;

[0020] A connecting block is provided at the output end of the first adjusting rod, a connecting groove is provided on the upper surface of the adapter block, and the connecting block is clamped in the connecting groove;

[0021] The two vertical roller linear guide rails are respectively provided with a limit block, and the limit block is used to limit the upper vertical rod from touching the lower vertical rod;

[0022] A rib is provided at the connection between the vertical plate and the upper fixed plate.

[0023] Preferably, the horizontal roller adjustment mechanism also includes a second adjusting rod, a horizontal roller guide rail and an axis fixing bolt; the horizontal roller guide rail is provided on the lower fixed plate; the two groups of vertical plates are provided with a second adjusting rod on the opposite side, and the rod body of the second adjusting rod passes through the vertical plate and is spirally connected to the vertical plate; the input end of the second adjusting rod is provided on the outside of the vertical plate, and the output end of the second adjusting rod is provided on the inside of the vertical plate; the two groups of vertical plates are provided with a sliding block on the opposite side, one end of the sliding block is connected to the output end of the second adjusting rod, and the other end of the sliding block is connected to the horizontal roller.

[0024] Preferably, the two sliding blocks are slidably connected to the horizontal roller guide rail;

[0025] When the input ends of the two second adjusting rods rotate simultaneously, the output ends of the two second adjusting rods respectively drive the corresponding sliding blocks to move relative to or opposite to each other along the direction of the horizontal roller guide rail.

[0026] Preferably, the two sliding blocks are both provided with the shaft fixing bolts; and the horizontal roller guide rail is provided with two limit blocks, and the two limit blocks respectively limit the two sliding blocks.

[0027] Preferably, the guide includes a table mat frame, which is installed on a fixed frame with the shell. The table mat frame is removably mounted with a tripod, which is connected to a hydraulic cylinder. The hydraulic cylinder is provided with a mounting block on the side facing the shell, and a clamp is installed on the mounting block. The two vertical rollers and the two horizontal rollers form a clamping space, and the clamp sends the workpiece into the center of the clamping space.

[0028] Preferably, the vertical roller comprises a vertical roller shaft, the outer periphery of the vertical roller shaft is provided with a shaft retaining ring, a roller bearing is installed in the shaft retaining ring, the outer periphery of the roller bearing is provided with a vertical roller ring, and bearing pressing sheets are provided on both sides of the vertical roller ring;

[0029] The horizontal roller includes a horizontal roller shaft, the side surfaces at both ends of the horizontal roller shaft are provided with gaskets, the side surfaces in the middle of the horizontal roller shaft are provided with angular contact bearings, the outer periphery of the angular contact bearings are provided with roller rings, and horizontal roller bearing pressing plates are provided on both sides of the roller rings.

[0030] Preferably, a drawing reel is provided outside the shell, the plate drawing reel and the guide are respectively located on both sides of the shell, and the workpiece is drawn by the vertical roller group and the horizontal roller group and then wound into the drawing reel.

[0031] Compared with the prior art, the present invention has at least the following beneficial effects:

[0032] In the above solution, 1) the first adjusting rod is connected to the adapter block groove by a snap-in connection design, which can simply and conveniently adjust the roll gap size; and can reduce the number of drawing and annealing times to prepare rectangular small-section profiles.

[0033] 2) The reinforcement ribs and guide rails are set to ensure the safety and stability of the roller mold equipment to a great extent.

[0034] 3) Shaft retaining rings and bearing pressure plates are provided to avoid axial deflection between the bearing and the shaft, and between the bearing and the roller ring.

[0035] 4) The roller gap adjustment range is large, and the adaptability of rectangular small-section workpieces is strong, and more types and sizes of workpieces can be used with the drawing reel.

[0036] 5) The roller adjustment mechanism is designed to be easy to adjust and has good stability, suitable for the drawing and forming of high-precision profiles. BRIEF DESCRIPTION OF THE DRAWINGS

[0037] The accompanying drawings, which are incorporated herein and constitute a part of the specification, illustrate embodiments of the present disclosure and, together with the description, further serve to explain the principles of the present disclosure and to enable one skilled in the relevant art to make and use the present disclosure.

[0038] Figure 1 This is a schematic structural diagram of an adjustable roller die drawing device according to an embodiment of the present invention;

[0039] Figure 2 A cross-sectional view of a vertical roller of an adjustable roller die drawing device according to an embodiment of the present invention;

[0040] Figure 3 A cross-sectional view of a horizontal roller of an adjustable roller die drawing device according to an embodiment of the present invention;

[0041] Figure 4 A schematic diagram of a wedge-shaped feeler gauge of an adjustable roller die drawing device according to an embodiment of the present invention;

[0042] Figure 5 This is a schematic diagram of the guide structure of an adjustable roller die drawing device according to an embodiment of the present invention;

[0043] Figure 6 This is a schematic diagram of the drawing reel structure of an adjustable roller die drawing device according to an embodiment of the present invention.

[0044] [reference numerals]

[0045] 1. Second adjusting rod; 2. Connecting plate; 3. Vertical plate; 4. First adjusting rod; 5. Sliding block; 6. Limit block; 7. Horizontal roller; 8. Vertical roller; 10. Adapter block; 11. Shaft fixing bolt; 12. Vertical roller linear guide; 13. Rib plate; 14. Upper fixing plate; 15. Lower fixing plate; 16. Vertical roller shaft; 17. Roller bearing; 18. Vertical roller ring; 19. Bearing pressure plate; 20. Shaft retaining ring; 21. Horizontal roller shaft; 22. Angular contact bearing; 23. Washer; 24. Horizontal roller bearing pressure plate; 25. Roller ring; 26. Workpiece; 27. Housing; 28. Clamp; 29. Mounting block; 30. Hydraulic cylinder; 31. Tripod; 32. Table mat holder; 33. Fixed frame; 34. Drawing reel.

[0046] As shown in the figure, in order to clearly implement the structure of the embodiment of the present invention, specific structures and devices are marked in the figure, but this is only for illustrative purposes and is not intended to limit the present invention to the specific structure, device and environment. According to specific needs, ordinary technicians in this field can adjust or modify these devices and environments, and the adjustments or modifications made are still included in the scope of the appended claims. DETAILED DESCRIPTION

[0047] The following describes in detail an adjustable roller die drawing device provided by the present invention, with reference to the accompanying drawings and specific embodiments. It is also noted that, for the sake of completeness, the following embodiments are best and preferred embodiments, and those skilled in the art may employ alternative implementations for known techniques. Furthermore, the accompanying drawings are intended only to provide a more detailed description of the embodiments and are not intended to limit the present invention.

[0048] It should be noted that references in the specification to "one embodiment," "an embodiment," "an exemplary embodiment," "some embodiments," etc. indicate that the described embodiments may include specific features, structures, or characteristics, but not every embodiment necessarily includes such specific features, structures, or characteristics. In addition, when specific features, structures, or characteristics are described in conjunction with an embodiment, it is within the knowledge of persons skilled in the relevant art to implement such features, structures, or characteristics in conjunction with other embodiments (whether or not explicitly described).

[0049] In general, terms can be understood, at least in part, from their use in context. For example, depending at least in part on the context, the term "one or more" as used herein can be used to describe any feature, structure, or characteristic in the singular sense, or can be used to describe a combination of features, structures, or characteristics in the plural sense. Additionally, the term "based on" can be understood as not necessarily intended to convey an exclusive set of factors, but can instead, depending at least in part on the context, allow for the presence of other factors that are not necessarily explicitly described.

[0050] It will be understood that the meanings of “on,” “over,” and “above” in this disclosure should be interpreted in the broadest manner, such that “on” means not only “directly on” something, but also includes being “on” something with intervening features or layers, and “on” or “over” means not only “on” or “above” something, but also includes being “on” or “above” something with no intervening features or layers.

[0051] Additionally, spatially relative terms such as "below," "beneath," "lower," "above," and "upper" may be used herein for descriptive convenience to describe the relationship of one element or feature to another element or features, as illustrated in the accompanying drawings. Spatially relative terms are intended to encompass different orientations of the device in use or operation in addition to the orientation depicted in the accompanying drawings. The device may be oriented in other ways, and the spatially relative descriptors used herein should be similarly interpreted accordingly.

[0052] like Figures 1-6 As shown, the present application provides an adjustable roller die drawing device, including a shell 27 and a connecting plate 2. The shell 27 includes an upper fixed plate 14, a lower fixed plate 15, and two groups of vertical plates 3. Two groups of the vertical plates 3 are symmetrically provided at both ends of the lower fixed plate 15. An upper fixed plate 14 is provided between the two groups of the vertical plates 3. The upper fixed plate 14 is parallel to the lower fixed plate 15, and the connecting plate 2 is parallel to the lower fixed plate 15. The connecting plate 2 is disposed within the inner cavity of the shell 27, and the connecting plate 2 divides the inner cavity of the shell 27 into an upper cavity and a lower cavity. Ribs 13 are provided at the connection between the vertical plates 3 and the upper fixed plate 14 to enhance the strength and stability of the device.

[0053] like Figure 1 As shown, the vertical roller assembly is disposed in the lower cavity of the housing 27. The vertical roller assembly includes at least two vertical rollers 8. In this application, two vertical rollers 8 are preferably used (the vertical rollers 8 are arranged in pairs, an even number). One vertical roller 8 is vertically disposed on the lower surface of the connecting plate 2, and the other vertical roller 8 is vertically disposed on the upper surface of the lower fixed plate 15. The two vertical rollers 8 are symmetrically disposed. The vertical roller assembly is used to longitudinally draw the workpiece 26.

[0054] The vertical roller adjustment mechanism is disposed in the upper cavity of the inner cavity of the housing 27. The vertical roller adjustment mechanism is connected to the connecting plate 2 and is used to adjust the distance between the vertical rollers 8, thereby adjusting the size of the vertical roller gap. The vertical roller adjustment mechanism includes a first adjustment rod 4, an adapter block 10, and a vertical roller linear guide 12. The rod body of the first adjustment rod 4 is threadedly connected to the upper fixed plate 14. The input end of the first adjustment rod 4 is disposed above the upper fixed plate 14, and the output end of the first adjustment rod 4 is disposed below the upper fixed plate 14. The adapter block 10 is fixed to the upper surface of the connecting plate 2, and the output end of the first adjustment rod 14 is connected to the adapter block 10. When the input end of the first adjustment rod 4 rotates, the output end of the first adjustment rod 4 drives the connecting plate 2 to move longitudinally along the vertical roller linear guide 12 through the adapter block 10.

[0055] Vertical roller linear guides 12 are respectively provided on the two opposite inner walls of the two groups of vertical plates 3 for installing the connecting plate 2, and the two side edges of the connecting plate 2 are respectively slidably connected to the vertical roller linear guides 12; a connecting block is provided at the output end of the first adjusting rod 4, and a connecting groove is provided on the upper surface of the adapter block 10, and the connecting block is clamped in the connecting groove; limit blocks 6 are respectively provided on the two vertical roller linear guides 12, and the limit blocks 6 are used to limit the upper vertical rod 8 from touching the lower vertical rod 8.

[0056] The horizontal roller group is arranged in the lower cavity of the inner cavity of the shell 27, and the horizontal roller group includes at least two horizontal rollers 7. In this application, two horizontal rollers 7 are preferably arranged in pairs (the horizontal rollers 7 are arranged in even numbers). The two horizontal rollers 7 are respectively arranged horizontally on the inner walls on both sides of the lower cavity of the inner cavity of the shell 27, that is, each horizontal roller 7 is arranged on the inner side wall of the corresponding vertical plate 3, and the two horizontal rollers 7 are symmetrically arranged. The horizontal roller group is used to laterally pull the workpiece 26.

[0057] The horizontal roller adjustment mechanism is disposed in the lower cavity of the inner cavity of the housing 27. The horizontal roller adjustment mechanism is connected to the horizontal roller group. The horizontal roller adjustment mechanism is used to adjust the distance between the horizontal rollers 7, thereby adjusting the size of the horizontal roller gap. The horizontal roller adjustment mechanism includes a second adjustment rod 1, a horizontal roller guide, and an axis fixing bolt 11; the horizontal roller guide is provided on the lower fixed plate 15; the two sets of vertical plates 3 are each provided with a second adjustment rod 1 on the opposite side, the rod body of the second adjustment rod 1 passes through the vertical plate 3 and is spirally connected to the vertical plate 3; the input end of the second adjustment rod 1 is provided on the outside of the vertical plate 3, and the output end of the second adjustment rod 1 is provided on the inside of the vertical plate 3; the two sets of vertical plates 3 are each provided with a sliding block 5 on the opposite side, one end of the sliding block 5 is connected to the output end of the second adjustment rod 1, and the other end of the sliding block 5 is connected to the horizontal roller 7. The two sliding blocks 5 are slidably connected to the horizontal roller guide. When the input ends of the two second adjustment rods 1 rotate simultaneously, the output ends of the two second adjustment rods 1 drive the corresponding sliding blocks 5 to move toward or away from each other along the horizontal roller guide. Each sliding block 5 is equipped with an axis fixing bolt 11 for securing the roller shaft of the horizontal roller 7. The horizontal roller guide is equipped with two limit blocks 6, which respectively limit the position of the two sliding blocks 5.

[0058] like Figure 5 As shown, an adjustable roller die drawing device also includes a guide, which includes a table pad frame 32. The table pad frame 32 and the shell 27 are both installed on a fixed frame 33. The table pad frame 32 can be detachably mounted on a foot frame 31. The foot frame 31 is connected to a hydraulic cylinder 30. The hydraulic cylinder 30 is provided with a mounting block 29 on the side facing the shell 27. A clamp 28 is installed on the mounting block 29. The two vertical rollers 8 and the two horizontal rollers 7 form a clamping space. The clamp 28 sends the workpiece 26 into the center of the clamping space.

[0059] like Figure 2-Figure 3 As shown, the vertical roller 8 includes a vertical roller shaft 16, the outer circumference of which is provided with a shaft retaining ring 20, in which a roller bearing 17 is mounted. The outer circumference of the roller bearing 17 is provided with a vertical roller ring 18, and bearing pressure plates 19 are provided on both sides of the vertical roller ring 18. The vertical roller shaft 16 and the shaft retaining ring 20 are connected by a slot, limiting the axial movement of the roller bearing 17 on the roller shaft 16; the bearing pressure plate 19 is fixed to the roller ring by screws, limiting the axial deflection of the roller ring 18 and the bearing 17.

[0060] The horizontal roller 7 includes a horizontal roller shaft 21. The sides of the horizontal roller shaft 21 are covered with backing rings 23. The side of the middle portion of the horizontal roller shaft 21 is covered with an angular contact bearing 22. A roller ring 25 is mounted on the outer periphery of the angular contact bearing 22. Both sides of the roller ring 25 are provided with horizontal roller bearing pressure plates 24. The horizontal roller shaft 21 and the backing ring 23 are tightly fitted together, limiting the axial movement of the angular contact bearing 22 on the roller shaft 21. The horizontal roller bearing pressure plates 24 are fixed to the roller ring 25 with screws, limiting axial deflection of the roller ring 25 and the bearing 22.

[0061] like Figure 4 As shown, an adjustable roller die drawing device also includes a wedge-shaped feeler gauge and a drawing reel 34. The wedge-shaped feeler gauge is inserted between the clamping space to measure the size of the clamping space. The wedge-shaped feeler gauge has an accuracy of 0.05mm and a measuring range of 0.5-10mm. The feeler gauge is inserted into the roller gap until it cannot be further inserted. At this time, the data is read to measure the roller gap size.

[0062] A drawing reel 34 is provided outside the housing 27. The drawing reel 34 and the guide are located on either side of the housing 27. After being drawn by the vertical roller assembly and the horizontal roller assembly, the workpiece 26 is wound into the drawing reel 34. The configuration of the drawing reel 34 allows for the drawing of longer workpieces 26.

[0063] The first adjustment lever 4 and the second adjustment lever 1 can be rotated manually or automatically adjusted by a servo motor. During use, the present invention is subject to significant vertical positive pressure on the roller mold. The addition of reinforcing ribs 13, vertical roller linear guides 12, and eight stoppers 6, which cooperate with the vertical and horizontal roller linear guides to limit the roller mold's adjustment range, greatly ensures the safety and reliability of the roller mold equipment.

[0064] When the present invention is in use, according to the required hole size, the adjusting rod is rotated to adjust each roller to the appropriate position to form a rectangular hole of the intended size. The vertical roller 8 can be adjusted in the range of 0-8mm, and the horizontal roller 7 can be adjusted in the range of 0-10mm. Use a wedge-shaped feeler gauge to measure and adjust, and then subsequent four-roller roller die drawing can be carried out.

[0065] The technical effects of the present invention are as follows: the design of a first adjustment rod and a groove-engaging connection between the adapter block and the roller gap allows for simple and convenient adjustment of the roller gap size; the number of drawing and annealing times can be reduced to produce rectangular small-section profiles; the provision of reinforcing ribs and guide rails greatly ensures the safety and stability of the roller die equipment; the provision of shaft retaining rings and bearing pressure plates prevents axial deflection between the bearing and shaft, and between the bearing and roller ring; the roller gap adjustment range is large, making it highly adaptable to workpieces with small rectangular cross-sections and capable of being used with a wider range of workpiece sizes in conjunction with the drawing reel; and the roller adjustment mechanism is designed to be easily adjustable and stable, suitable for the drawing and forming of high-precision profiles.

[0066] The present invention encompasses any alternatives, modifications, equivalents, and solutions that fall within the spirit and scope of the present invention. To provide a thorough understanding of the present invention, specific details are described in detail in the following preferred embodiments of the present invention, but those skilled in the art will be able to fully understand the present invention without these detailed descriptions. Furthermore, to avoid unnecessary confusion about the essence of the present invention, well-known methods, processes, procedures, components, and circuits have not been described in detail.

[0067] The above is only a preferred embodiment of the present invention. It should be pointed out that for ordinary technicians in this technical field, several improvements and modifications can be made without departing from the principles of the present invention. These improvements and modifications should also be regarded as within the scope of protection of the present invention.

Claims

1. An adjustable roller die drawing device, characterized in that: Including: shell, and a connecting plate, the connecting plate being disposed in the inner cavity of the shell, the connecting plate dividing the inner cavity of the shell into an upper cavity and a lower cavity; And, a vertical roller group is arranged in the lower cavity of the shell, the vertical roller group includes two vertical rollers, one vertical roller is vertically arranged on the lower surface of the connecting plate, and the other vertical roller is vertically arranged on the upper surface of the bottom end in the lower cavity of the shell, the two vertical rollers are symmetrically arranged, and the vertical roller group is used for longitudinal drawing of workpieces; and, a vertical roller adjustment mechanism, disposed in the upper cavity of the inner cavity of the shell, the vertical roller adjustment mechanism being connected to the connecting plate and being used to adjust the distance between the vertical rollers; and a horizontal roller group, arranged in the lower cavity of the inner cavity of the shell, the horizontal roller group including two horizontal rollers, the two horizontal rollers being horizontally arranged on the inner walls on both sides of the lower cavity of the inner cavity of the shell, the two horizontal rollers being symmetrically arranged, and the horizontal roller group being used for transversely drawing the workpiece; and a horizontal roller adjustment mechanism disposed in the lower cavity of the inner cavity of the shell, the horizontal roller adjustment mechanism being connected to the horizontal roller group and being used to adjust the distance between the horizontal rollers; As well as, a guide and a wedge-shaped feeler gauge; a clamping space is enclosed between the horizontal roller group and the vertical roller group, the guide is arranged outside the shell, and the guide is used to deliver the workpiece into the clamping space; the wedge-shaped feeler gauge is supported and inserted between the clamping space for measuring the size of the clamping space.

2. The adjustable roller die drawing device according to claim 1, characterized in that: The shell includes an upper fixed plate, a lower fixed plate and two groups of vertical plates, two groups of vertical plates are symmetrically provided at both ends of the lower fixed plate, an upper fixed plate is provided between the two groups of vertical plates, the upper fixed plate is parallel to the lower fixed plate, and the connecting plate is parallel to the lower fixed plate.

3. The adjustable roller die drawing device according to claim 2, characterized in that: The vertical roller adjustment mechanism includes a first adjustment rod, a transfer block and a vertical roller linear guide rail; The rod body of the first adjusting rod is threadedly connected to the upper fixed plate, the input end of the first adjusting rod is arranged above the upper fixed plate, and the output end of the first adjusting rod is arranged below the upper fixed plate; the adapter block is fixed to the upper surface of the connecting plate, and the output end of the first adjusting rod is connected to the adapter block; when the input end of the first adjusting rod rotates, the output end of the first adjusting rod drives the connecting plate to move linearly longitudinally along the vertical roller linear guide rail through the adapter block.

4. The adjustable roller die drawing device according to claim 3, characterized in that: Vertical roller linear guide rails are respectively provided on two opposite inner side walls of the housing for mounting the connecting plate, and both sides of the connecting plate are slidably connected to the vertical roller linear guide rails; A connecting block is provided at the output end of the first adjusting rod, a connecting groove is provided on the upper surface of the adapter block, and the connecting block is clamped in the connecting groove; The two vertical roller linear guide rails are respectively provided with a limit block, and the limit block is used to limit the upper vertical rod from touching the lower vertical rod; A rib is provided at the connection between the vertical plate and the upper fixed plate.

5. The adjustable roller die drawing device according to claim 2, characterized in that: The horizontal roller adjustment mechanism also includes a second adjusting rod, a horizontal roller guide rail and an axis fixing bolt; the horizontal roller guide rail is provided on the lower fixed plate; the two groups of vertical plates are provided with a second adjusting rod on the opposite side, and the rod body of the second adjusting rod passes through the vertical plate and is spirally connected to the vertical plate; the input end of the second adjusting rod is provided on the outer side of the vertical plate, and the output end of the second adjusting rod is provided on the inner side of the vertical plate; the two groups of vertical plates are provided with a sliding block on the opposite side, one end of the sliding block is connected to the output end of the second adjusting rod, and the other end of the sliding block is connected to the horizontal roller.

6. The adjustable roller die drawing device according to claim 5, characterized in that: The two sliding blocks are slidably connected to the horizontal roller guide rail; When the input ends of the two second adjusting rods rotate simultaneously, the output ends of the two second adjusting rods respectively drive the corresponding sliding blocks to move relative to or opposite to each other along the direction of the horizontal roller guide rail.

7. The adjustable roller die drawing device according to claim 5, characterized in that: The two sliding blocks are both provided with the shaft fixing bolts; the horizontal roller guide rail is provided with two limit blocks, and the two limit blocks respectively limit the two sliding blocks.

8. The adjustable roller die drawing device according to claim 1, characterized in that: The guide includes a table pad frame, which and the shell are both installed on a fixed frame. The table pad frame can be detachably mounted with a tripod, which is connected to a hydraulic cylinder. The hydraulic cylinder is provided with a mounting block on the side facing the shell, and a clamp is installed on the mounting block. The two vertical rollers and the two horizontal rollers form a clamping space, and the clamp sends the workpiece into the center of the clamping space.

9. The adjustable roller die drawing device according to claim 1, characterized in that: The vertical roller includes a vertical roller shaft, the outer periphery of the vertical roller shaft is provided with a shaft retaining ring, a roller bearing is installed in the shaft retaining ring, the outer periphery of the roller bearing is provided with a vertical roller ring, and bearing pressing plates are provided on both sides of the vertical roller ring; The horizontal roller includes a horizontal roller shaft, the side surfaces at both ends of the horizontal roller shaft are provided with gaskets, the side surfaces in the middle of the horizontal roller shaft are provided with angular contact bearings, the outer periphery of the angular contact bearings are provided with roller rings, and horizontal roller bearing pressing plates are provided on both sides of the roller rings.

10. The adjustable roller die drawing device according to claim 8, characterized in that: A drawing reel is provided outside the shell. The drawing reel and the guide are respectively located on both sides of the shell. The workpiece is drawn by the vertical roller group and the horizontal roller group and then rolled into the drawing reel.

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