Automatic wire drawing device for plastic sheets

Abstract

The utility model discloses an automatic wire drawing device for a plastic sheet, which comprises a heating unit and a wire drawing unit, the heating unit is provided with a hot melting channel for the plastic sheet to pass through, and the heating unit is used for heating the plastic sheet passing through the hot melting channel to a molten state and shaping the plastic sheet in the molten state into a plastic wire; the wire drawing unit comprises a driving motor, a first wire feeding wheel, a second wire feeding wheel and a pre-tightening force adjusting mechanism, the first wire feeding wheel and the second wire feeding wheel are both driven by the driving motor to rotate, the first wire feeding wheel and the second wire feeding wheel are arranged in parallel, and a gap allowing a plastic wire to penetrate through is formed between the first wire feeding wheel and the second wire feeding wheel; the pre-tightening force adjusting mechanism is connected with the first wire feeding wheel and used for driving the first wire feeding wheel to act relative to the second wire feeding wheel so as to adjust the gap. By means of the wire drawing unit, the size of the gap between the first wire feeding wheel and the second wire feeding wheel can be adjusted, and therefore the wire drawing unit can adapt to plastic wires of different sizes and specifications.

Description

An automatic wire drawing device for plastic sheets Technical Field

[0001] This application relates to the field of plastic recycling equipment technology, specifically to an automatic filament drawing device for plastic sheets. Background Technology

[0002] Introducing 3D printing technology into plastic recycling processes has become a popular trend in the field in recent years. Utilizing waste plastics to manufacture 3D printing filaments can significantly reduce their cost. Current technologies typically involve heating cut plastic sheets to a molten state, then using a shaping nozzle to mold the molten sheet into plastic filaments of the required size for 3D printing. Existing plastic filament drawing devices have several issues in the heating and drawing stages. During heating, uneven heating of the plastic sheet can lead to inconsistent melting, resulting in localized overheating or incomplete melting, which in turn causes filament breakage and uneven thickness. Furthermore, existing plastic filament drawing devices generally only work with filaments of specific sizes. If the filament size is too small, slippage can interrupt the drawing process; if the filament size is too large, blockage can also cause interruptions. Summary of the Invention

[0003] This application aims to address one of the technical problems in related technologies to a certain extent. To this end, this application provides an automatic sheet drawing device for plastic sheets.

[0004] To achieve the above objectives, this application adopts the following technical solution: an automatic filament drawing device for plastic sheets, the automatic filament drawing device including a heating unit and a filament drawing unit, the heating unit having a hot melt channel through which the plastic sheet passes, the heating unit being used to heat the plastic sheet passing through the hot melt channel to a molten state and to shape the molten plastic sheet into plastic filaments; the filament drawing unit including a drive motor, a first filament feeding wheel, a second filament feeding wheel, and a preload adjustment mechanism, the first filament feeding wheel and the second filament feeding wheel being driven to rotate by the drive motor, the first filament feeding wheel and the second filament feeding wheel being arranged in parallel with a gap between them for the plastic filaments to pass through, the preload adjustment mechanism being connected to the first filament feeding wheel and being used to drive the first filament feeding wheel to move relative to the second filament feeding wheel to adjust the gap.

[0005] The application of this application has the following beneficial effects: by setting a pre-tightening force adjustment mechanism, the first wire feeding wheel can be driven to move relative to the second wire feeding wheel, thereby adjusting the gap between the first wire feeding wheel and the second wire feeding wheel, which allows the wire drawing unit to be adapted to plastic wires of different sizes and specifications.

[0006] Optionally, the wire drawing unit further includes a fixed block and a swing block rotatably disposed on the fixed block, the first wire feeding wheel is rotatably disposed on the swing block, and the second wire feeding wheel is rotatably disposed on the fixed block; the preload adjustment mechanism is disposed between the fixed block and the swing block and adjusts the gap by adjusting the position of the swing block relative to the fixed block.

[0007] Optionally, the preload adjustment mechanism includes an adjusting screw threaded onto a fixed block and an elastic element disposed between the adjusting screw and the swing block. The adjusting screw passes through the swing block and the two are slidably engaged. The elastic element applies pressure to the swing block such that the second wire feeding wheel tends to approach the first wire feeding wheel.

[0008] Optionally, the wire drawing unit further includes a drive gear disposed at the output end of the drive motor and a transmission gear meshing with the drive gear, the second wire feeding wheel being fixedly disposed on the transmission gear and the two being arranged coaxially; the wire drawing unit further includes a first gear ring disposed at the end of the first wire feeding wheel and a second gear ring disposed at the end of the second wire feeding wheel, the first gear ring and the second gear ring meshing with each other.

[0009] Optionally, the wire drawing unit further includes a feeding channel and a discharging channel disposed on the fixed block, wherein the feeding channel and the discharging channel are both circular holes and are arranged directly opposite the gap.

[0010] Optionally, the heating unit includes a heat exchange block, a heating element for heating the heat exchange block, and a shaping nozzle disposed on the heat exchange block. The heat exchange block and the shaping nozzle cooperate to form the hot melt channel. The heat exchange block is provided with a feed inlet, and the shaping nozzle is provided with a discharge outlet.

[0011] Optionally, along the direction from the feed inlet to the discharge outlet, the hot melt channel includes a continuous first conical section, a first straight cylindrical section, a second straight cylindrical section, and a second conical section. The inner diameters of the first conical section and the second conical section gradually narrow, and the inner diameter of the first straight cylindrical section is larger than that of the second straight cylindrical section.

[0012] Optionally, the automatic wire drawing device further includes a control unit, wherein both the heating unit and the wire drawing unit are electrically connected to the control unit and are controlled by the control unit.

[0013] Optionally, the automatic wire drawing device further includes a housing with a cavity, and the housing is provided with a heat insulation plate that divides the cavity into a first chamber and a second chamber. The heating unit and the wire drawing unit are both disposed in the first chamber, and the control unit is disposed in the second chamber.

[0014] Optionally, the housing is provided with a first vent and a second vent communicating with the second chamber, and the automatic wire drawing device further includes a cooling fan disposed at the first vent.

[0015] These features and advantages of this application will be disclosed in detail in the following specific embodiments and accompanying drawings. The best embodiments or means of this application will be shown in detail in conjunction with the accompanying drawings, but are not intended to limit the technical solutions of this application. In addition, each of these features, elements and components appearing in the following text and drawings is multiple and is labeled with different symbols or numbers for convenience, but all represent parts with the same or similar structure or function. Attached Figure Description

[0016] The following description, in conjunction with the accompanying drawings, further illustrates this application:

[0017] Figure 1 is a schematic diagram of an automatic wire drawing device for plastic sheets provided in an embodiment of this application;

[0018] Figure 2 is a schematic diagram of the internal structure of the automatic wire drawing device;

[0019] Figure 3 is a schematic diagram of the wire drawing unit in the automatic wire drawing device;

[0020] Figure 4 is an exploded view of the wire drawing unit;

[0021] Figure 5 is an internal side view of the wire drawing unit;

[0022] Figure 6 is a schematic diagram of the heating unit;

[0023] Figure 7 is an exploded view of the heating unit;

[0024] Figure 8 is a cross-sectional view of the heating unit.

[0025] The components include: 1. Heating unit; 10. Heat equalization block; 100. Feed inlet; 101. First conical section; 102. First cylindrical section; 11. Heating element; 12. Shaping nozzle; 120. Discharge outlet; 121. Second cylindrical section; 122. Second conical section; 2. Wire drawing unit; 20. Drive motor; 21. First wire feeding wheel; 210. Second rotating shaft; 22. Second wire feeding wheel; 23. Preload adjustment mechanism; 230. 1. Adjusting screw; 231. Elastic element; 24. Fixing block; 240. Connecting plate; 241. Feed channel; 242. First rotating shaft; 25. Swing block; 26. Drive gear; 27. Transmission gear; 28. First gear ring; 29. ​​Second gear ring; 3. First control unit; 4. Second control unit; 5. Housing; 50. Winding frame; 51. Infeed hole; 52. Wire outlet hole; 53. Heat insulation plate; 6. Cooling fan. Detailed Implementation

[0026] The embodiments of this application are described in detail below. Examples of these embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals denote the same or similar elements or elements having the same or similar functions throughout. The embodiments described are intended to explain this application and should not be construed as limiting it.

[0027] The terms "an embodiment," "example," or "example" used in this specification refer to a particular feature, structure, or characteristic described in connection with the embodiment itself that may be included in at least one embodiment disclosed in this application. The phrase "in an embodiment" appearing in various places throughout the specification does not necessarily refer to the same embodiment.

[0028] In the description of this application, it should be understood that the terms "upper," "lower," "front," "rear," "vertical," "horizontal," "top," "bottom," "inner," and "outer," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, and are only for the convenience of describing this application and simplifying the description, and 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 this application. In the description of this application, "a plurality of" means two or more, unless otherwise precisely specified.

[0029] In the description of this application, it should be noted that, unless otherwise expressly specified and limited, the terms "connected," "linked," and "connected" should be interpreted broadly. For example, they can refer to a fixed connection, a connection through an intermediary, or a connection within two elements or an interaction between two elements. Those skilled in the art can understand the specific meaning of the above terms in this application according to the specific circumstances.

[0030] This embodiment provides an automatic wire drawing device, as shown in Figures 1 and 2. The automatic wire drawing device includes a heating unit 1 and a wire drawing unit 2. The heating unit 1 has a hot-melt channel through which a plastic sheet passes. The heating unit 1 is used to heat the plastic sheet passing through the hot-melt channel to a molten state and shape the molten plastic sheet into plastic filaments. The wire drawing unit 2 includes a drive motor 20, a first wire feeding wheel 21, a second wire feeding wheel 22, and a preload adjustment mechanism 23. Both the first wire feeding wheel 21 and the second wire feeding wheel 22 are driven by the drive motor 20 to rotate. The first wire feeding wheel 21 and the second wire feeding wheel 22 are arranged in parallel with a gap between them for the plastic filaments to pass through. The preload adjustment mechanism 23 is connected to the first wire feeding wheel 21 and is used to drive the first wire feeding wheel 21 to move relative to the second wire feeding wheel 22 to adjust the gap.

[0031] The automatic wire drawing device provided in this embodiment improves the existing wire drawing scheme by setting a pre-tension adjustment mechanism 23. The pre-tension adjustment mechanism 23 can drive the first wire feeding wheel 21 to move relative to the second wire feeding wheel 22, thereby adjusting the gap between the first wire feeding wheel 21 and the second wire feeding wheel 22. This allows the wire drawing unit 2 to adapt to plastic wires of different sizes and specifications.

[0032] Referring to Figures 3 and 4, the wire drawing unit 2 in this embodiment further includes a fixed block 24 and a swing block 25 rotatably disposed on the fixed block 24. A first wire feeding wheel 21 is rotatably disposed on the swing block 25, and a second wire feeding wheel 22 is rotatably disposed on the fixed block 24. Specifically, referring to Figure 5, in this embodiment, a first rotating shaft 242 is disposed on the fixed block 24, and a second rotating shaft 210 is disposed on the first wire feeding wheel 21. The swing block 25 is rotatably disposed on the fixed block 24 via the first rotating shaft 242, and the first wire feeding wheel 21 is rotatably disposed on the swing block 25 via the second rotating shaft 210. A preload adjustment mechanism 23 is disposed between the fixed block 24 and the swing block 25 and adjusts the gap by adjusting the position of the swing block 25 relative to the fixed block 24.

[0033] Furthermore, the preload adjustment mechanism 23 in this embodiment includes an adjusting screw 230 threaded onto the fixed block 24 and an elastic element 231 disposed between the adjusting screw 230 and the swing block 25. The adjusting screw 230 passes through the swing block 25 and the two are slidably engaged. The elastic element 231 causes the second wire feeding wheel 22 to tend to press against the swing block 25 closer to the first wire feeding wheel 21. In this embodiment, the elastic element 231 is a compression spring, which is sleeved on the adjusting screw 230 and its two ends abut against the end of the adjusting screw 230 and the swing block 25, respectively. It is easy to understand that by turning the adjusting screw 230, the distance between the end of the adjusting screw 230 and the swing block 25 can be changed, thereby changing the degree of compression of the elastic element 231. In turn, the swing block 25 can drive the first wire feeding wheel 21 to move slightly relative to the second wire feeding wheel 22, adjusting the gap between them.

[0034] Specifically, in this embodiment, for ease of assembly, the fixing block 24 is configured as two detachable parts. The fixing block 24 includes a bent plate and a connecting plate 240 fixedly connected to the bent plate by bolts. A gap is provided between the bent plate and the connecting plate 240. The first wire feeding wheel 21 and the second wire feeding wheel 22 are disposed between the bent plate and the connecting plate 240. The swing block 25 is rotatably disposed on the bent plate via the first rotating shaft 242. The drive motor 20 is fixedly disposed on the bent plate, and the adjusting screw 230 is threaded onto the connecting plate 240.

[0035] The wire drawing unit 2 in this embodiment further includes a drive gear 26 disposed at the output end of the drive motor 20 and a transmission gear 27 meshing with the drive gear 26. The second wire feeding wheel 22 is fixedly disposed on the transmission gear 27, and the two are arranged coaxially. In this embodiment, the drive gear 26 is fixedly sleeved on the output end of the drive motor 20, and the transmission gear 27 is rotatably disposed on the aforementioned bending plate. When the drive motor 20 is working, it can drive the transmission gear 27 and the second wire feeding wheel 22 to rotate through the drive gear 26. At the same time, the wire drawing unit 2 in this embodiment also includes a first gear ring 28 disposed at the end of the first wire feeding wheel 21 and a second gear ring 29 disposed at the end of the second wire feeding wheel 22. The first gear ring 28 and the second gear ring 29 mesh with each other. With the above structural design, when the second wire feeding wheel 22 rotates, it can drive the first wire feeding wheel 21 to rotate synchronously through the second gear ring 29 and the first gear ring 28.

[0036] It is easy to understand that both the first gear ring 28 and the second gear ring 29 have external teeth and tooth grooves. The meshing depth of the first gear ring 28 and the second gear ring 29 refers to the depth to which the external teeth of both enter the tooth grooves, generally also called the contact height or meshing height. In practical applications, the above meshing depth is allowed to have a certain range of tolerance. Therefore, the first gear ring 28 and the second gear ring 29 can work in conjunction with the preload adjustment mechanism 23. Specifically, the meshing depth between the first gear ring 28 and the second gear ring 29 can be changed by turning the adjusting screw 230. During this process, a gap is maintained between the first wire feeding wheel 21 and the second wire feeding wheel 22, and the size of the gap changes accordingly.

[0037] The drawing unit 2 in this embodiment also includes a feeding channel 241 and a discharging channel (not shown in the figure) disposed on the fixing block 24. Both the feeding channel 241 and the discharging channel are circular holes and are arranged directly opposite the gap. It is easy to understand that the dimensions of the feeding channel 241 and the discharging channel can be designed according to the filament size required by the 3D printing equipment. For example, if the filament diameter required by a certain 3D printing equipment is 1.75mm, then the aperture size of the feeding channel 241 and the discharging channel will be designed to be 1.75mm.

[0038] Referring to Figures 6 and 7, the heating unit 1 in this embodiment includes a heat spreader 10, a heating element 11 for heating the heat spreader 10, and a shaping nozzle 12 disposed on the heat spreader 10. The heat spreader 10 and the shaping nozzle 12 cooperate to form a hot melt channel. The heat spreader 10 is provided with an inlet 100, and the shaping nozzle 12 is provided with an outlet 120. The heat spreader 10 is a product used to evenly distribute heat to the entire surface. It is generally made of copper, aluminum, or graphene. Its functional principle is existing technology, and its shape and structure can be designed according to the required specifications, which will not be elaborated here. The heating element 11 in this embodiment is an electric heating rod. An insertion hole is provided on the heat spreader 10, and the heating element 11 can be inserted into the insertion hole. The shaping nozzle 12 in this embodiment is an existing product. After being heated, the molten plastic sheet can be shaped into plastic filaments by the shaping nozzle 12. The size of the outlet 120 can be designed to be the filament diameter required by the 3D printing equipment. In this embodiment, the shaping nozzle 12 is threadedly connected to the heat spreader 10. When the wire diameter required by the 3D printing equipment changes, the shaping nozzle 12 with a suitable outlet size can be replaced.

[0039] Along the direction from the inlet 100 to the outlet 120, the hot melt channel includes a continuous first conical section 101, a first cylindrical section 102, a second cylindrical section 121, and a second conical section 122. The inner diameters of the first conical section 101 and the second conical section 122 gradually narrow, with the inner diameter of the first cylindrical section 102 being larger than that of the second cylindrical section 121. Specifically, as shown in Figure 8, the first conical section 101 and the first cylindrical section 102 are formed within the heat spreader 10, and the second cylindrical section 121 and the second conical section 122 are formed within the forming nozzle 12. When the heating element 11 is energized, it generates heat, which is evenly distributed through the heat spreader 10 to the inner walls of the first conical section 101 and the first cylindrical section 102, and can also be conducted to the forming nozzle 12.

[0040] The heating element 11 in this embodiment supports a heating temperature range of 150°C to 300°C, which can meet the hot melt drawing temperature required for common plastic bottles.

[0041] In existing technologies, uneven heating of the plastic sheet during the heating process can easily lead to inconsistent melting levels. This embodiment employs a heat spreader 10 to improve the uniformity of heat distribution to the plastic sheet. Furthermore, this embodiment also designs the specific structure of the hot-melt channel. In existing technologies, the channel through which the plastic sheet passes is generally designed as a tapered channel (i.e., the cross-section gradually decreases along the direction of the plastic sheet's movement). However, the hot-melt channel in this embodiment is designed with a first cylindrical section 102 and a second cylindrical section 121, with the inner diameter of the first cylindrical section 102 being larger than that of the second cylindrical section 121. This results in a greater shear effect as the heated and molten plastic sheet flows from the first cylindrical section 102 into the second cylindrical section 121, reducing the occurrence of incomplete melting.

[0042] A wire drawing experiment was conducted using the automatic wire drawing device provided in this embodiment, targeting common cola plastic bottles. The cola plastic bottle was cut into 6mm wide plastic sheets. During the hot melt wire drawing operation, the traction speed of the wire drawing unit was set to 1.2m / min, the heating temperature was set to between 250℃ and 270℃, and the target wire diameter was set to 1.75mm (that is, the apertures of the discharge port 120, the feed channel 241, and the discharge channel were all designed to be 1.75mm). The final produced plastic filament diameter was 1.75mm ± 0.03mm, which can be directly applied to the Prusai3 series 3D printing equipment.

[0043] The automatic wire drawing device provided in this embodiment also includes a control unit. Both the heating unit 1 and the wire drawing unit 2 are electrically connected to the control unit and are controlled by the control unit. Specifically, the control unit includes a first control unit 3 for controlling the heating unit 1 and a second control unit 4 for controlling the wire drawing unit 2.

[0044] Furthermore, the automatic wire drawing device also includes a housing 5 with a cavity, and a heat insulation plate 53 is provided inside the housing 5 to divide the cavity into a first chamber and a second chamber. The heating unit 1 and the wire drawing unit 2 are both located in the first chamber, and the control unit is located in the second chamber. By providing the heat insulation plate 53, heat transfer to the second chamber can be reduced, preventing the control unit from overheating and causing negative effects. In this embodiment, the housing 5 is also provided with a first vent and a second vent communicating with the second chamber, and the automatic wire drawing device also includes a cooling fan 6 located at the first vent. By providing the cooling fan 6, heat can be quickly carried away.

[0045] In addition, heat-insulating coating can be applied to the inner wall of the outer casing 5 to prevent the outer casing 5 from softening due to heat during long-term use.

[0046] To facilitate the arrangement of the plastic sheet, a winding frame 50 is provided on the outside of the outer casing 5 in this embodiment. The outer casing 5 also has a rectangular inlet hole 51 and a circular outlet hole 52. Before operation, the plastic sheet is wound onto the winding frame 50, and the end of the plastic sheet is inserted into the outer casing 5 through the inlet hole 51. The operator manually feeds the plastic sheet until it passes through the hot-melt channel and extends into the gap between the first feed roller 21 and the second feed roller 22. Then, the drawing unit 2 drives the plastic sheet on the winding frame 50 to move until all the plastic sheet is made into plastic filaments and removed from the outlet hole 52.

[0047] The above are merely specific embodiments of this application, but the scope of protection of this application is not limited thereto. Those skilled in the art should understand that this application includes, but is not limited to, the contents described in the accompanying drawings and the specific embodiments above. Any modifications that do not depart from the functional and structural principles of this application will be included within the scope of the claims.

Claims

1. An automatic wire drawing device for plastic sheets, characterized in that, The automatic wire drawing device includes a heating unit (1) and a wire drawing unit (2). The heating unit (1) is provided with a hot melt channel for plastic sheet to pass through. The heating unit (1) is used to heat the plastic sheet passing through the hot melt channel to a molten state and shape the molten plastic sheet into plastic filaments. The wire drawing unit (2) includes a drive motor (20), a first wire feeding wheel (21), a second wire feeding wheel (22), and a preload adjustment mechanism (23). The first wire feeding wheel (21) and the second wire feeding wheel (22) are both driven by the drive motor (20) to rotate. The first wire feeding wheel (21) and the second wire feeding wheel (22) are arranged in parallel and a gap is provided between them for plastic filaments to pass through. The preload adjustment mechanism (23) is connected to the first wire feeding wheel (21) and is used to drive the first wire feeding wheel (21) to move relative to the second wire feeding wheel (22) to adjust the gap.

2. The automatic wire drawing device as described in claim 1, characterized in that, The wire drawing unit (2) further includes a fixed block (24) and a swing block (25) rotatably disposed on the fixed block (24). The first wire feeding wheel (21) is rotatably disposed on the swing block (25), and the second wire feeding wheel (22) is rotatably disposed on the fixed block (24). The preload adjustment mechanism (23) is disposed between the fixed block (24) and the swing block (25) and adjusts the gap by adjusting the position of the swing block (25) relative to the fixed block (24).

3. The automatic wire drawing device as described in claim 2, characterized in that, The preload adjustment mechanism (23) includes an adjustment screw (230) threaded onto a fixed block (24) and an elastic element (231) disposed between the adjustment screw (230) and the swing block (25). The adjustment screw (230) passes through the swing block (25) and the two are slidably engaged. The elastic element (231) applies pressure to the swing block (25) such that the second wire feed wheel (22) tends to approach the first wire feed wheel (21).

4. The automatic wire drawing device as described in claim 2, characterized in that, The wire drawing unit (2) further includes a drive gear (26) disposed at the output end of the drive motor (20) and a transmission gear (27) meshing with the drive gear (26). The second wire feeding wheel (22) is fixedly disposed on the transmission gear (27) and the two are arranged coaxially. The wire drawing unit (2) further includes a first toothed ring (28) disposed at the end of the first wire feeding wheel (21) and a second toothed ring (29) disposed at the end of the second wire feeding wheel (22). The first toothed ring (28) and the second toothed ring (29) mesh with each other.

5. The automatic wire drawing device as described in claim 2, characterized in that, The wire drawing unit (2) also includes a feeding channel (241) and a discharging channel disposed on the fixed block (24). The feeding channel (241) and the discharging channel are both round holes and are arranged directly opposite the gap.

6. The automatic wire drawing device as described in claim 1, characterized in that, The heating unit (1) includes a heat spreader (10), a heating element (11) for heating the heat spreader (10), and a shaping nozzle (12) disposed on the heat spreader (10). The heat spreader (10) and the shaping nozzle (12) cooperate to form the hot melt channel. The heat spreader (10) is provided with a feed inlet (100), and the shaping nozzle (12) is provided with a discharge outlet (120).

7. The automatic wire drawing device as described in claim 6, characterized in that, Along the direction from the feed inlet (100) to the discharge outlet (120), the hot melt channel includes a continuous first conical section (101), a first straight cylindrical section (102), a second straight cylindrical section (121), and a second conical section (122). The inner diameters of the first conical section (101) and the second conical section (122) gradually narrow, and the inner diameter of the first straight cylindrical section (102) is larger than the inner diameter of the second straight cylindrical section (121).

8. The automatic wire drawing device as described in any one of claims 1 to 7, characterized in that, The automatic wire drawing device also includes a control unit. The heating unit (1) and the wire drawing unit (2) are both electrically connected to the control unit and are controlled by the control unit.

9. The automatic wire drawing device as described in claim 8, characterized in that, The automatic wire drawing device also includes a housing (5) with a cavity, and a heat insulation plate (53) is provided inside the housing (5) to divide the cavity into a first chamber and a second chamber. The heating unit (1) and the wire drawing unit (2) are both located in the first chamber, and the control unit is located in the second chamber.

10. The automatic wire drawing device as described in claim 9, characterized in that, The outer casing (5) is provided with a first vent and a second vent that communicate with the second chamber, and the automatic wire drawing device also includes a cooling fan (6) located at the first vent.

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