Wire drawing process and wire drawing mechanism of wire drawing machine adopting wire drawing process

Abstract

The invention is suitable for the field of wire drawing machine equipment, and provides a wire drawing process and a wire drawing mechanism of a wire drawing machine adopting the process, and the wire drawing process comprises a central column which is connected with a driver to rotate; the expansion strips are arranged around the central column and jointly construct a yarn roll supporting area; a plurality of expansion strips are divided into two groups, and a fixed group and a movable group are constructed; a supporting area surrounded by the expansion strips of the fixed group in a supporting state is equal to a supporting area of the expansion strips of the movable group; during unloading, the plurality of expansion strips of the fixing group move in the radial direction perpendicular to the axis of the central column, so that the supporting area of the expansion strips is reduced; when the yarn roll moves under the action of external force, the movable group moves along the axis direction of the central column relative to the fixed group, so that the yarn roll is supported by the detachable movable group expansion strip, the stability of the inner edge of the yarn roll during unloading is maintained, and the yarn roll is prevented from being scattered.

Description

Technical Field

[0001] This invention relates to the field of wire drawing equipment, and more particularly to a wire drawing process and a wire drawing mechanism of a wire drawing machine employing the process. Background Technology

[0002] In fiberglass production, the drawing machine is one of the core pieces of equipment. With the industry’s increasing demand for production capacity, the four-head multi-drawing drawing machine will gradually become the mainstream equipment because it can produce multiple yarn bundles at the same time.

[0003] In the current processing steps of the fiber drawing machine, after the fiberglass is wound into a yarn ball at the machine head, the diameter of the machine head fixing column is reduced, so that a gap is formed between the inner circle of the yarn ball and the outer circle of the fixing column for easy movement. Then, the yarn ball is pushed off the machine head fixing column by the pushing mechanism.

[0004] However, during the feeding process, the movement of the yarn ball causes resistance between its inner edge and the outer wall of the fixed column, which in turn causes the gathered yarn ball to scatter.

[0005] In conclusion, the existing technology obviously has inconveniences and defects in practical use, so it is necessary to improve it. Summary of the Invention

[0006] To address the aforementioned deficiencies, the present invention aims to provide a yarn drawing process and a yarn drawing mechanism for a yarn drawing machine employing the process. This mechanism supports the yarn bundle through a detachable movable tension bar, maintaining the stability of the inner edge of the yarn bundle during unloading and preventing it from scattering.

[0007] To achieve the above objectives, the present invention provides a wire drawing process, comprising: Raw material melting: The prepared glass raw materials are heated to a predetermined temperature in a tank furnace to fully melt them into molten glass. Precision feeding: The molten glass is transported to the drawing furnace under its own hydrostatic pressure or auxiliary pressure; the bottom of the baffle plate is evenly distributed with a large number of precision micropores; Temperature control and fiber forming: The stencil is electrically heated to maintain a precise temperature range, ensuring that the viscosity of the molten glass flowing through the micropores reaches the predetermined poise number for drawing; under the action of gravity, the viscous molten glass flows out of the micropores in droplets; High-speed traction and cooling: The high-speed rotating drawing machine drum below exerts a strong traction force on the downward-flowing glass droplets; this force causes the glass liquid to be rapidly stretched, thinned, and cooled rapidly as it flows out of the micropores, solidifying into glass fiber monofilaments. Bundling and winding: Bundling: Hundreds of monofilaments drawn from all the micropores of the same sprue are coated with a sizing agent as they pass through the bundler; when the yarn bobbin on one head is full, the system automatically guides the raw yarn to another head to achieve uninterrupted continuous production; in current drawing machines, only one head is producing while the other head is waiting, ensuring uninterrupted production unless some monofilaments of the glass fiber itself break, in which case the machine will be forced to stop. Getting on the vehicle: This is the initial step in winding.

[0008] According to the wire drawing process of the present invention, the predetermined temperature is 1300℃-1600℃.

[0009] According to the wire drawing process of the present invention, the predetermined number of poises is 1000 poises.

[0010] The drawing mechanism of the drawing machine according to the present invention includes: a central column connected to a driver for rotation; a plurality of tension strips arranged around the central column to jointly construct a yarn bundle support area; the plurality of tension strips are divided into two groups to construct a fixed group and a movable group; the support area surrounded by the tension strips of the fixed group in the supported state is equivalent to the support area of ​​the tension strips of the movable group; during unloading, the plurality of tension strips of the fixed group move in a radial direction perpendicular to the axis of the central column to reduce their support area; when the yarn bundle is moved by an external force, the movable group moves relative to the fixed group along the axis of the central column.

[0011] According to the wire drawing mechanism of the wire drawing machine of the present invention, a fixed plate and a release plate are respectively provided at both ends of the expansion bar; the release plate is detachably mounted on the central column; one end of the expansion bar of the moving group is fixed to the release plate, and the other end is detachably mounted to the fixed plate.

[0012] According to the wire drawing mechanism of the wire drawing machine of the present invention, a plurality of expansion bars of the fixed group are radially moved by a driving mechanism; the driving mechanism includes a driving part that moves along the axis of the central column and a connecting rod connected thereto; one end of the connecting rod is hinged to the driving part and the other end is hinged to the inside of the expansion bars.

[0013] According to the wire drawing mechanism of the wire drawing machine of the present invention, the driving mechanism is provided in two sets, which are arranged opposite to each other.

[0014] According to the wire drawing mechanism of the wire drawing machine of the present invention, the driving part is a sleeve screwed to the central column.

[0015] According to the wire drawing mechanism of the wire drawing machine of the present invention, a winding reel is provided at the end of the release reel away from the expansion bar.

[0016] This invention provides a fiber drawing mechanism for a fiber drawing machine, comprising: a central column connected to a driver for rotation; the central column serves as the main body of the entire fiber drawing mechanism, providing the necessary rotational effect for the entire device. A plurality of tension strips are arranged around the central column to collectively construct a yarn support area, which is a cylindrical region. The tension strips provide the necessary support force during the fiber winding process. The tension strips are divided into two groups, forming a fixed group and a movable group. In the supported state, the support area surrounded by the tension strips of the fixed group is equivalent to the support area of ​​the tension strips of the movable group. The tension strips are divided into two groups in an interleaved distribution, i.e., one tension strip of the fixed group corresponds adjacent to one tension strip of the movable group, arranged sequentially. During operation (fiberglass yarn winding), the tension strips of the fixed and movable groups are in a relatively fixed position to construct a stable support state. During unloading, the tension strips of the fixed group first move radially perpendicular to the axis of the central column to reduce their support area. This invention reduces the tension on the fiberglass yarn during the release process, facilitating the release of the yarn. On the other hand, it avoids the resistance caused by the contact surface between the tension bar of the fixed group and the yarn, which leads to the inner edge of the yarn becoming scattered. The tension bar of the moving group releases synchronously with the yarn, effectively solving the above problems. Attached Figure Description

[0017] Figure 1 This is a schematic diagram of the structure of the present invention; Figure 2 This is a schematic diagram of the wire drawing mechanism of the present invention; Figure 3 This is a schematic diagram of the connection structure between the disengaged disc and the moving assembly of the present invention. Figure 4 yes Figure 2 Screenshot of the interface along the center; Figure 5 This is a diagram showing the installation of the center column and the clutch; Figure 6 This is a schematic diagram showing how the bundler assembly supports the yarn filaments. In the diagram, 1-center column, 2-expansion bar, 21-drive unit, 22-connecting rod, 3-fixed disc, 4-disengagement disc, 41-winding disc, 00-fixed group, 01-moving group, 03-clutch, 04-drawing mechanism body. Detailed Implementation

[0018] To make the objectives, technical solutions, and advantages of this invention clearer, the invention will be further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely for explaining the invention and are not intended to limit the invention.

[0019] It should be noted that if the embodiments of the present invention involve directional indicators (such as up, down, left, right, front, back, etc.), the directional indicators are only used to explain the relative positional relationship and movement of the components in a certain specific posture (as shown in the figure). If the specific posture changes, the directional indicators will also change accordingly.

[0020] Meanwhile, the meaning of "and / or" or "and / or" appearing throughout the text is that it includes three options. Taking "A and / or B" as an example, it includes option A, option B, or an option that satisfies both A and B.

[0021] Furthermore, if the embodiments of this invention involve descriptions such as "first" or "second," these descriptions are for descriptive purposes only and should not be construed as indicating or implying their relative importance or implicitly specifying the number of technical features indicated. Therefore, a feature defined with "first" or "second" may explicitly or implicitly include at least one of those features. Additionally, the technical solutions of the various embodiments can be combined with each other, but this must be based on the ability of those skilled in the art to implement them. If the combination of technical solutions is contradictory or impossible to implement, it should be considered that such a combination of technical solutions does not exist and is not within the scope of protection claimed by this invention.

[0022] This invention provides a wire drawing process and a wire drawing mechanism for a wire drawing machine using the process. This wire drawing process significantly improves product quality and production efficiency through innovative equipment layout (two sets of automatic reversing wire drawing combinations, a total of 4 heads; one set consists of 2 heads, with 1 head working and 1 head waiting) and dynamic control method.

[0023] I. Process Steps Raw material melting: The prepared glass raw materials (mainly composed of sandstone containing silica and various fluxes) are heated to a high temperature of 1300℃-1600℃ in a tank furnace to fully melt them into a glass melt with uniform viscosity and stable composition.

[0024] Precision feeding: Molten glass is precisely and stably conveyed into a drawing furnace (commonly known as a "spindle") made of platinum-rhodium alloy under its own hydrostatic pressure or auxiliary pressure. The bottom of the spindle is evenly distributed with numerous precision micropores (typically 1-2 mm in diameter). For example, this embodiment uses a 2400-pore spindle specifically for producing 100 tex, 136 tex, and 200 tex glass fiber bundles (linear density unit tex, i.e., the weight in grams of material per 1000 meters).

[0025] Temperature control and fiber forming: The stencil is electrically heated to maintain a precise temperature range slightly above the glass melting point, ensuring that the viscosity of the molten glass flowing through the micropores reaches approximately 1000 poise, optimal for wire drawing. Under the influence of gravity, the viscous molten glass flows out of the micropores in droplets.

[0026] High-speed traction and cooling: The high-speed rotating drum of the drawing machine below (with a speed of several thousand meters per minute) exerts a strong traction force on the downward-flowing molten glass droplets. This force causes the molten glass to be rapidly stretched, thinned, and cooled sharply the instant it flows out of the micropores, solidifying into glass fiber monofilaments.

[0027] Bundling and winding: Bundling: Hundreds of monofilaments drawn from all the micropores of the same spool are coated with a sizing agent as they pass through the bundler. This sizing agent plays a crucial role in protecting, lubricating, bundling, and bonding the fibers to the subsequent resin matrix. When the yarn bobbin on one head is full, the system automatically guides the raw yarn to another head (idle state), achieving uninterrupted continuous production. Further explanation: Current fiber drawing machines operate with only one head in production while the other waits, ensuring uninterrupted production unless a single filament breaks, in which case a shutdown is forced.

[0028] Getting on the vehicle: This is the initial step in winding.

[0029] For conventional wire drawing machines (1 turntable, 2 heads), after the equipment is started or under maintenance, the loading mechanism manually / automatically guides the raw yarn onto the winding spool of the running head. As the yarn laying mechanism moves into position step by step (within 12 seconds or less), the yarn enters the yarn laying hole and the winding begins, marking the start of normal operation.

[0030] The new equipment (2 turntables, 4 heads) operates independently in a single group (i.e., 1 turntable and 2 heads): After the equipment is started or under maintenance, the loading mechanism manually guides the raw yarn onto the winding spool of one of the heads. As the yarn-laying mechanism moves into position step-by-step (within 12 seconds), the yarn enters the yarn-laying hole, and winding begins, marking the start of normal operation. The other turntable can be in normal yarn-drawing mode or in a stopped state.

[0031] Dual-head winding: In normal continuous production, two turntables and two winding heads rotate simultaneously. The winding mechanism manually guides the raw yarn to the automatic winding device (or manually). Through the rotation of the lower turntable, one winding head on the lower turntable guides the yarn to the winding spool. At this time, the upper turntable rotates, and one winding head on the upper turntable guides the yarn to the winding spool. As the two sets of yarn-laying mechanisms reach their positions in stages (less than or equal to 12 seconds), the yarn enters the yarn-laying hole and the winding begins. At this time, normal operation begins and the winding starts, realizing the synchronous winding of the two winding heads.

[0032] Head reversal: During the winding process, when the yarn bobbin on one running head is full, the system automatically starts the turntable. The yarn pushing mechanism pushes the raw yarn to the winding disc. Through the rotation of the turntable, the full bobbin head rotates to the empty head position, and the empty head rotates to the full bobbin head position to start normal operation. The raw yarn can be replaced through the winding discs on the two heads. After the replacement is completed, the yarn pushing mechanism returns to its original position, the raw yarn enters the designated position of the head, and the yarn laying mechanism enters the position in steps (less than or equal to 12 seconds). The yarn enters the yarn laying hole, thus realizing uninterrupted continuous production. During the head reversal process, the two heads can be reversed independently, and the reversal work is independent.

[0033] Winding: The combined complete glass fiber filaments are finally wound into a yarn bobbin of a specified shape and weight under constant tension.

[0034] II. Core Equipment and Innovative Control Methods The drawing machine used in this process is a four-head, dual-rotor system, with two heads mounted on one rotor. The two rotors can operate simultaneously or independently without interference, yet they can work in tandem. Within each rotor system, one head is in the rotating working state, while the other is used to unload the wound yarn. The core innovation of this structure lies in: Dual-head independent speed control: The support shafts of the two heads can operate at different speeds.

[0035] Two sets of bundlers: A first bundler set and a second bundler set are provided between the wire drawing machine and the stencil.

[0036] See Figure 6 The first clusterer group has multiple points, such as a1, b1, c1, d1, e1, f1.

[0037] The second clusterer group, corresponding to the support shaft of the machine head, also has points a2, b2, c2, d2, e2, and f2. Among them, a2, b2, and c2 correspond to the support shaft of the first speed machine head, and d2, e2, and f2 correspond to the support shaft of the second speed machine head.

[0038] Support shaft specifications: The one machine head (support shaft) can be selected with 3 to 6 cylinders, and can independently produce 2 varieties of numbers.

[0039] III. Supporting Debugging Methods To maximize the above advantages, this invention also proposes a set of efficient debugging methods: Pre-debugging: First, the yarn is allocated according to the default one-to-one path, namely: a1→a2, b1→b2, c1→c2, d1→d2, e1→e2, f1→f2.

[0040] Feedback adjustment: Collect linear density data of yarns produced from each path.

[0041] For example, the test found that the yarn in the a1→a2 and c1→c2 paths was too thick (350tex), the yarn in the e1→e2 and f1→f2 paths was too thin (250tex), while the yarn in the b1→b2 and d1→d2 paths was acceptable.

[0042] Optimize and redistribute the yarns: adjust the paths of coarser yarns to the lower-speed machine head (support shaft), and adjust the paths of finer yarns to the higher-speed machine head (support shaft). Specifically, the adjustments can be: a1→e2 (high speed), c1→f2 (high speed); e1→a2 (low speed), f1→c2 (low speed). This cross-distribution utilizes the speed difference to compensate for the flow rate difference, concentrating the linear density of all yarns towards the target value.

[0043] In addition, this application also discloses a wire drawing mechanism for a wire drawing machine, which includes: See Figure 1 and Figure 2 The central column 1 is connected to a driver and rotates; the central column 1 serves as the main body of the entire wire drawing mechanism 04, providing the necessary rotation effect for the entire device.

[0044] Several tension strips 2 are arranged around the central column to jointly construct the yarn ball support area. The yarn ball support area is a cylindrical area, and the tension strips 2 provide the necessary support force during the glass fiber winding process. The tension strips 2 are divided into two groups to form a fixed group and a movable group. The support area surrounded by the fixed group of expansion bars 2 in the supported state is equivalent to the support area of ​​the movable group of expansion bars 2; preferably, the expansion bars 2 are divided into two groups in an interleaved distribution manner, that is, one fixed group of expansion bars 2 is adjacent to one movable group of expansion bars 2, and so on.

[0045] During operation (fiberglass yarn winding), the expansion bars 2 of the fixed group 00 and the moving group 01 are in a fixed relative position to create a stable support state. During unloading, the tension bars 2 of the fixed group 00 first move in a radial direction perpendicular to the axis of the central column 1 to reduce its support area. At this time, on the one hand, the tension force on the fiberglass yarn in the detached state is reduced, which facilitates the detachment of the yarn. On the other hand, the resistance brought by the contact surface between the tension bars 2 of the fixed group and the yarn is avoided, which would cause the inner edge of the yarn to become scattered. The tension bars 2 of the moving group are released synchronously with the yarn, which can effectively solve the above problems.

[0046] To ensure the synchronous movement of the several expansion bars 2 in the fixed group and improve the working efficiency of the equipment, the several expansion bars 2 in the fixed group are driven by a driving mechanism to move radially. The driving mechanism includes a driving part 21 that moves along the axis of the central column 1 and a connecting rod 22 connected thereto. One end of the connecting rod is hinged to the driving part and the other end is hinged to the inner side of the expansion bar 2. As the driving part 21 moves, when the angle between the connecting rod and the vertical plane gradually decreases, it further pushes the expansion bar 2 to move radially outward. Conversely, when the angle between the connecting rod and the vertical plane gradually increases, it further pushes the expansion bar 2 to move radially inward.

[0047] Preferably, in order to ensure the force balance when the expansion bar 2 moves radially and to achieve the stability of the expansion bar 2 during movement, the driving mechanism is provided in two sets, which are arranged opposite to each other.

[0048] The driving part is a sleeve screwed to the central column 1. When the central column 1 is driven to rotate, the sleeve is further driven to move along the axial direction of the central column 1 through the threaded structure.

[0049] Subsequently, the moving group enters a state where it can be separated from the fixed group's tension bar 2. When the yarn ball is moved by an external force, the moving group moves relative to the fixed group along the axis of the central column 1. During this movement, due to the auxiliary support of the tension bar 2 of the moving group, there will be no relative movement between the tension bar 2 and the inner edge of the yarn, thus effectively solving the problem of yarn scattering caused by frictional resistance during the pushing process.

[0050] In some embodiments of this application, the support of the fixed group and the movable group of the tension strip 2 is ensured, and the tension strip 2 forms a stable yarn ball support area. The two ends of the tension strip 2 are respectively provided with a fixed plate 3 and a release plate 4; the tension strip 2 is distributed in a ring on the fixed plate 3 or the release plate 4.

[0051] The release plate 4 is detachably mounted on the central column 1; one end of the expansion bar 2 of the moving assembly is fixed to the release plate 4, and the other end is detachably mounted on the fixed plate 3. The fixed plate 3 and the release plate 4 are both provided with slots for easy insertion of the end of the expansion bar 2.

[0052] It should be noted that, at this time, the central column 1 needs to switch between rotation and fixation relative to several expansion bars 2 of the fixed group (or relative to the fixed disc 3) according to the required working conditions. Therefore, the fixed disc 3 and the central column 1 are connected by a clutch; The clutch 03 includes a separable / connectable first connection end and a second connection end; The first connecting end is connected to the fixed disk 3, and the second connecting end is connected to the central column 1.

[0053] In this invention, a winding reel 41 is provided at the end of the detachment reel 4 away from the expansion bar 2.

[0054] In operation, the glass fiber at the end of the yarn is first wound onto the winding reel 41 for pre-pulling. Then, the yarn is wound onto the yarn ball support area of ​​the expansion bar 2 by the winding and drawing structure moving evenly along a predetermined trajectory, combined with the rotation of the entire drawing mechanism body 04 (at this time, the clutch is closed, and the rotating central column 1 drives the mechanism to rotate) to form a yarn ball.

[0055] After the winding is completed, during the unloading process, the clutch is first disengaged, and the central column 1 rotates independently to further drive the expansion bar 2 of the fixed group to retract radially, while the release disc 4 is disassembled. The pushing structure pushes the yarn ball away from the fixed plate 3 along the axis of the central column 1, simultaneously pushing down the release plate 4. After the yarn ball and release plate 4 are placed on the ground manually, the release plate 4 is pulled out from the inner edge of the yarn ball. At this time, since the yarn ball is placed horizontally on the ground, it will not scatter under the action of gravity.

[0056] Finally, manually reinstall the disconnect disc 4 (reverse the center column 1 to reconnect the disconnect disc 4).

[0057] In summary, this invention provides a fiber drawing mechanism for a fiber drawing machine, comprising: a central column connected to a driver for rotation; the central column serves as the main body of the entire fiber drawing mechanism, providing the necessary rotational effect for the entire device. A plurality of tension strips are arranged around the central column to collectively construct a yarn support area, which is a cylindrical area, provided by the tension strips for necessary support during the fiber winding process; the tension strips are divided into two groups, forming a fixed group and a movable group; the support area surrounded by the tension strips of the fixed group in the supported state is equivalent to the support area of ​​the tension strips of the movable group; the tension strips are divided into two groups in an interleaved distribution, i.e., one tension strip of the fixed group corresponds adjacent to one tension strip of the movable group, arranged sequentially. During operation (fiberglass yarn winding), the tension strips of the fixed group and the movable group are in a relatively fixed position to construct a stable support state; during unloading, the tension strips of the fixed group first move radially perpendicular to the axis of the central column to reduce their support area; This invention reduces the tension on the fiberglass yarn during the release process, facilitating the release of the yarn. On the other hand, it avoids the resistance caused by the contact surface between the tension bar of the fixed group and the yarn, which leads to the inner edge of the yarn becoming scattered. The tension bar of the moving group releases synchronously with the yarn, effectively solving the above problems.

[0058] Of course, the present invention may have other various embodiments. Without departing from the spirit and essence of the present invention, those skilled in the art can make various corresponding changes and modifications according to the present invention, but these corresponding changes and modifications should all fall within the protection scope of the appended claims.

Claims

1. A wire drawing process, characterized in that, include: Raw material melting: The prepared glass raw materials are heated to a predetermined temperature in a tank furnace to fully melt them into molten glass. Precision feeding: The molten glass is transported to the drawing furnace under its own hydrostatic pressure or auxiliary pressure; the bottom of the baffle plate is evenly distributed with a large number of precision micropores; Temperature control and fiber forming: The stencil is electrically heated to maintain a precise temperature range, ensuring that the viscosity of the molten glass flowing through the micropores reaches the predetermined poise number for drawing; under the action of gravity, the viscous molten glass flows out of the micropores in droplets; High-speed traction and cooling: The high-speed rotating drawing machine drum below exerts a strong traction force on the downward-flowing glass droplets; this force causes the glass liquid to be rapidly stretched, thinned, and cooled rapidly as it flows out of the micropores, solidifying into glass fiber monofilaments. Bundling and winding: Bundling: Hundreds of monofilaments drawn from all the micropores of the same sprue are coated with a sizing agent as they pass through the bundler; when the yarn bobbin on one head is full, the system automatically guides the raw yarn to another head to achieve uninterrupted continuous production; in current drawing machines, only one head is producing while the other head is waiting, ensuring uninterrupted production unless some monofilaments of the glass fiber itself break, in which case the machine will be forced to stop. Getting on the vehicle: This is the initial step in winding.

2. The wire drawing process according to claim 1, characterized in that, The predetermined temperature is 1300℃-1600℃.

3. The wire drawing process according to claim 1, characterized in that, The predetermined number of berths is 1000 berths.

4. A wire drawing mechanism of a wire drawing machine employing the wire drawing process described in claim 1, characterized in that, include: The central column is connected to a drive and rotates. Several strips are arranged around the central column to jointly construct the yarn support area; Several expansion bars are divided into two groups, forming a fixed group and a movable group; The support area surrounded by the expansion bar of the fixed group in the support state is the same as the support area of ​​the expansion bar of the moving group; During unloading, several expansion bars of the fixed group move in a radial direction perpendicular to the central column axis to reduce its support area; when the yarn ball is moved by an external force, the moving group moves relative to the fixed group in the direction of the central column axis.

5. The wire drawing mechanism of the wire drawing machine according to claim 4, characterized in that, The expansion bar is provided with a fixing plate and a release plate at both ends; The release plate is detachably mounted on the central column; one end of the expansion bar of the moving assembly is fixed to the release plate, and the other end is detachably mounted on the fixed plate.

6. The wire drawing mechanism of the wire drawing machine according to claim 5, characterized in that, The fixed group of several expansion bars are driven by a driving mechanism to move radially; The drive mechanism includes a drive unit that moves along the axis of the central column and a connecting rod connected thereto. One end of the connecting rod is hinged to the drive unit, and the other end is hinged to the inside of the expansion bar.

7. The wire drawing mechanism of the wire drawing machine according to claim 6, characterized in that, The drive mechanism is provided in two sets, which are arranged opposite to each other.

8. The wire drawing mechanism of the wire drawing machine according to claim 6, characterized in that, The driving part is a sleeve screwed to the central column.

9. The wire drawing mechanism of the wire drawing machine according to claim 6, characterized in that, The fixed plate and the central column are connected by a clutch; The clutch includes a separable / connectable first connection end and a second connection end; The first connecting end is connected to the fixed disk, and the second connecting end is connected to the central column.

10. The wire drawing mechanism of the wire drawing machine according to claim 4, characterized in that, A winding reel is provided at the end of the detachment reel away from the expansion bar.

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