Double-lace feeding structure

By using a dual lace feeding structure, two motors drive the material rod to achieve synchronous feeding, solving the problem that traditional laser cutting machines need to stop to replace the lace roll, thus improving work efficiency and flexibility.

CN224279118UActive Publication Date: 2026-05-26JIANGXI WEICHI AUTOMATION TECH CO LTD
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Patent Information

Application Number
CN202521340807.X
Authority / Receiving Office
CN · China
Patent Type
Utility models(China)
Current Assignee / Owner
Filing Date
2025-06-27
Publication Date
2026-05-26
Estimated Expiration
2035-06-27

AI Technical Summary

Technical Problem

Traditional laser cutting machines use a single-axis feeding mechanism, which requires stopping the machine when changing lace rolls, affecting work efficiency and flexibility.

Method used

It adopts a double lace feeding structure, with two motors driving two material rods respectively, to achieve synchronous feeding of the two lace rolls, avoiding downtime for replacement.

Benefits of technology

This allows for the replacement of lace rolls without stopping the machine, maintaining continuous cutting operations and improving work efficiency and flexibility.

✦ Generated by Eureka AI based on patent content.

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Abstract

The utility model discloses a double-lace feeding structure which comprises a first motor, a second motor, a first sensor, a second sensor, a first sensing mechanism, a second sensing mechanism, a support, a first material rod, a second material rod, a lace supporting plate, a first guide plate, a second guide plate, a first extension plate, a second extension plate, a third extension plate and a mounting plate. Wherein a rotating shaft of the first motor is connected with the first material rod, and a rotating shaft of the second motor is connected with the second material rod. Through the mode, the double-lace feeding structure disclosed by the utility model can drive the first material rod to rotate through the first motor so as to drive the lace winding drum on the first material rod to rotate, and can also drive the second material rod to rotate through the second motor so as to drive the lace winding drum on the second material rod to rotate, so that double-lace feeding is realized; the lace winding drum can be replaced without shutdown, cutting operation is kept all the time, working efficiency is guaranteed, and flexibility is relatively high.
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Description

Technical Field

[0001] This utility model relates to the field of lace cutting machine technology, specifically a double lace feeding structure. Background Technology

[0002] Lace is widely used in the production of various garments and decorative accessories. Generally, lace is cut using a laser cutting machine. A laser cutting machine typically includes a feeding mechanism. When lace fabric needs to be cut, the lace roll is placed on the feeding mechanism, and a motor drives the material rod on the feeding mechanism to rotate, feeding the lace into the cutting space of the laser cutting machine for cutting.

[0003] However, in the traditional way, the feeding mechanism of laser cutting machines on the market is single-axis feeding. That is, after the lace fabric of the lace roll is used up, it is necessary to replace it with a new lace roll. During this process, the machine needs to be stopped and the cutting operation needs to be paused. Cutting can only continue after the new lace roll is replaced. This will affect the work efficiency and has relatively low flexibility. Utility Model Content

[0004] (a) Technical problems to be solved

[0005] To address the shortcomings of existing technologies, this utility model provides a double lace feeding structure that can solve the aforementioned technical problems.

[0006] (II) Technical Solution

[0007] To solve the above-mentioned technical problems, this utility model provides the following technical solution: a double lace feeding structure, including a first motor, a second motor, a first sensor, a second sensor, a first sensing mechanism, and a second sensing mechanism, wherein the first sensing mechanism includes a first sensing rod and a third sensor connected to the first sensing rod, and the second sensing mechanism includes a second sensing rod and a fourth sensor connected to the second sensing rod. The structure is characterized by further including: a bracket, disposed on one side of the base of a laser cutting machine, wherein the bracket includes a support platform, a first support rod vertically disposed on one side of the support platform, and a second and third support rod spaced apart on the other side of the support platform, and the first motor and the second motor are disposed between the top end of the second support rod and the top end of the third support rod; a first material rod, used to mount a lace roll, rotatably disposed between the top end of the second support rod and the top end of the third support rod via a first mounting component, wherein the rotating shaft of the first motor is connected to the first material rod to drive the first material rod to rotate; and a second material rod, used to mount a lace roll, rotatably disposed between the top end of the second support rod and the top end of the third support rod via a second mounting component. Between the top ends, the rotating shaft of the second motor is connected to the second material rod to drive the second material rod to rotate; a lace support plate is inclinedly disposed above the support platform, wherein the lace support plate has a slot along its width direction to divide the lace support plate into a first lace support plate below the first material rod and a second lace support plate below the second material rod; a first guide plate is disposed vertically downward at one end of the first lace support plate near the second lace support plate; a second guide plate is disposed vertically downward at one end of the second lace support plate away from the first lace support plate; a first extension plate and a second extension plate are spaced apart at both ends of the first guide plate, wherein a first sensing rod is disposed between the bottom end of the first extension plate and the bottom end of the second extension plate, and a third sensor is disposed on the first extension plate or the second extension plate; a third extension plate is disposed at one end of the second guide plate; a mounting plate is disposed at the other end of the second guide plate, wherein a second sensing rod is disposed between the bottom end of the third extension plate and the mounting plate, and a fourth sensor is disposed on the third extension plate or the mounting plate.A first receiving slot for receiving lace fabric from a lace roll on the first material rod is formed between the first sensing rod, the first extension plate, the first guide plate, and the second extension plate; a second receiving slot for receiving lace fabric from a lace roll on the second material rod is formed between the second sensing rod, the third extension plate, the second guide plate, and the mounting plate; and the first sensor is located below the first lace support plate, and the second sensor is located below the second lace support plate.

[0008] Furthermore, the end of the first lace support plate away from the second lace support plate is disposed between the first support rod and the second support rod, and the end of the second lace support plate away from the first lace support plate is disposed on the third support rod. The first lace support plate and the second lace support plate are on the same plane, and the horizontal plane at one end of the first lace support plate is higher than the horizontal plane at the other end of the second lace support plate.

[0009] Furthermore, the second support rod extends with a first protrusion, and the first protrusion extends with a first sensing support shaft located below the first lace support plate. The first sensor is disposed on the first sensing support shaft. The third support rod extends with a second protrusion, and the second protrusion extends with a second sensing support shaft located below the second lace support plate. The second sensor is disposed on the second sensing support shaft.

[0010] Furthermore, the bottom end of the first extension plate is provided with a first sliding groove at an angle, and the bottom end of the second extension plate is provided with a second sliding groove symmetrical to the first sliding groove, wherein the first sensing rod is slidably disposed in the first sliding groove and the second sliding groove.

[0011] Furthermore, one end of the first sensing rod is threadedly connected to a first locking part, and the other end of the first sensing rod is threadedly connected to a second locking part.

[0012] Furthermore, the bottom end of the third extension plate is provided with a third sliding groove at an incline, and the mounting plate is provided with a fourth sliding groove symmetrical to the third sliding groove, wherein the second sensing rod is slidably disposed in the third sliding groove and the fourth sliding groove.

[0013] Furthermore, one end of the second sensing rod is threadedly connected to a third locking part, and the other end of the second sensing rod is threadedly connected to a fourth locking part.

[0014] Furthermore, the first material rod and the second material rod are arranged on the same horizontal plane.

[0015] Furthermore, a crossbar is provided between the top end of the second support rod and the top end of the third support rod. A first adjusting rod and a second adjusting rod are provided on the crossbar at intervals. The first adjusting rod is provided with a fifth sliding groove along its length direction, and the second adjusting rod is provided with a sixth sliding groove along its length direction. A fifth sensor is slidably disposed in the fifth sliding groove, and a sixth sensor is slidably disposed in the sixth sliding groove.

[0016] Furthermore, the first adjusting rod is arranged parallel to the first material rod and is located directly above the first material rod, and the second adjusting rod is arranged parallel to the second material rod and is located directly above the second material rod.

[0017] (III) Beneficial Effects

[0018] Compared with existing technologies, this utility model provides a double lace feeding structure with the following advantages: The double lace feeding structure disclosed in this utility model includes a first motor, a second motor, a first sensor, a second sensor, a first sensing mechanism, a second sensing mechanism, a bracket, a first material rod, a second material rod, a lace support plate, a first guide plate, a second guide plate, a first extension plate, a second extension plate, a third extension plate, and a mounting plate. The rotating shaft of the first motor is connected to the first material rod, and the rotating shaft of the second motor is connected to the second material rod. Through this method, the double lace feeding structure disclosed in this utility model can drive the first material rod to rotate via the first motor, thereby driving the lace roll on the first material rod to rotate. It can also drive the second material rod to rotate via the second motor, thereby driving the lace roll on the second material rod to rotate, thus achieving double lace feeding. This eliminates the need to stop the machine to change the lace roll, allowing continuous cutting operations, ensuring work efficiency, and providing relatively high flexibility. Attached Figure Description

[0019] Figure 1 This is a schematic diagram of the structure of the laser cutting machine of this utility model;

[0020] Figure 2 for Figure 1 A schematic diagram of the first embodiment of the double lace feeding structure;

[0021] Figure 3 for Figure 1 A schematic diagram of the second embodiment of the double lace feeding structure;

[0022] Figure 4 for Figure 1 A partial structural diagram of the double lace feeding structure;

[0023] Figure 5 for Figure 1 A schematic diagram of the second part of the double lace feeding structure;

[0024] Figure 6 for Figure 1 A schematic diagram of the third part of the double lace feeding structure;

[0025] Figure 7 for Figure 1 A schematic diagram of the fourth part of the double lace feeding structure. Detailed Implementation

[0026] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0027] like Figure 1-7 As shown, the present invention provides a double lace feeding structure, including a bracket 10, a first motor 11, a second motor 12, a first sensor 13, a second sensor 14, a first sensing mechanism, a second sensing mechanism, a first material rod 15, a second material rod 16, a lace support plate 17, a first guide plate 18, a second guide plate 19, a first extension plate 20, a second extension plate 21, a third extension plate 22, and a mounting plate 23.

[0028] In this embodiment, the first sensing mechanism includes a first sensing rod 24 and a third sensor 25 connected to the first sensing rod 24, and the second sensing mechanism includes a second sensing rod 26 and a fourth sensor 27 connected to the second sensing rod 26.

[0029] The bracket 10 is disposed on one side of the base 30 of the laser cutting machine. The bracket 10 includes a support platform 100, a first support rod 101 vertically disposed on one side of the support platform 100, and a second support rod 102 and a third support rod 103 spaced apart on the other side of the support platform 100. It should be understood that the first support rod 101 and the second support rod 102 are disposed close to the base 30 of the laser cutting machine, while the third support rod 103 is disposed away from the base 30 of the laser cutting machine.

[0030] Preferably, the first motor 11 and the second motor 12 are disposed between the top end of the second support rod 102 and the top end of the third support rod 103.

[0031] The first material rod 15 is used to mount the lace roll 31. The first material rod 15 is rotatably mounted between the top end of the second support rod 102 and the top end of the third support rod 103 via a first mounting component. The rotating shaft of the first motor 11 is connected to the first material rod 15 so that the first material rod 15 can be rotated by the first motor 11. That is to say, when it is necessary to feed lace fabric into the laser cutting machine for cutting, the first motor 11 will drive the first material rod 15 to rotate, thereby driving the lace roll on the first material rod 15 to rotate, so as to realize the feeding.

[0032] The second material rod 16 is used to mount the lace roll 31. The second material rod 16 is rotatably mounted between the top of the second support rod 102 and the top of the third support rod 103 via a second mounting component. The rotating shaft of the second motor 12 is connected to the second material rod 16, so that the second material rod 16 can be rotated by the second motor 12. In other words, when lace fabric needs to be fed into the laser cutting machine for cutting, the second motor 12 will drive the second material rod 16 to rotate, thereby rotating the lace roll on the second material rod 16 to achieve material feeding.

[0033] Preferably, the first material rod 15 and the second material rod 16 are arranged on the same horizontal plane.

[0034] It should be understood that the first motor 11 and the second motor 12 in this embodiment can work simultaneously or independently, providing high flexibility.

[0035] The lace support plate 17 is inclinedly disposed above the support platform 100. The lace support plate 17 has a slot 170 along its width direction to divide the lace support plate 17 into a first lace support plate 171 located below the first material rod 15 and a second lace support plate 172 located below the second material rod 16.

[0036] In this embodiment, the other end of the first lace support plate 171 away from the second lace support plate 172 is disposed between the first support rod 101 and the second support rod 102, and the other end of the second lace support plate 172 away from the first lace support plate 171 is disposed on the third support rod 103.

[0037] Preferably, the first lace support plate 171 and the second lace support plate 172 are on the same plane, that is, both the first lace support plate 171 and the second lace support plate 172 are inclined relative to the support platform 100.

[0038] Furthermore, the horizontal plane of one end of the first lace support plate 171 (i.e., the end near the slot 170) is higher than the horizontal plane of the other end of the second lace support plate 172 (i.e., the end near the slot 170), and the horizontal plane of the other end of the first lace support plate 171 is higher than the horizontal plane of one end of the first lace support plate 171, and the horizontal plane of the other end of the second lace support plate 172 is higher than the horizontal plane of one end of the second lace support plate 172.

[0039] The first guide plate 18 is vertically downward disposed at one end of the first lace support plate 171 near the second lace support plate 172, that is, the first guide plate 18 is disposed on the side of the slot 170 near the first lace support plate 171.

[0040] The second guide plate 19 is vertically downward positioned at one end of the second lace support plate 172 away from the first lace support plate 171.

[0041] The first extension plate 20 and the second extension plate 21 are spaced apart on both sides of the first guide plate 18 (that is, the first extension plate 20 and the second extension plate 21 are spaced apart on both sides of one end of the first lace support plate 171).

[0042] Preferably, the first extension plate 20 and the second extension plate 21 are arranged symmetrically.

[0043] Preferably, the first sensing rod 24 is disposed between the bottom end of the first extension plate 20 and the bottom end of the second extension plate 21, and the third sensor 25 is disposed on the first extension plate 20 or the second extension plate 21.

[0044] The third extension plate 22 is disposed at one end of the second guide plate 19.

[0045] Mounting plate 23 is located at the other end of the second guide plate 19. That is, the third extension plate 22 and mounting plate 23 are spaced apart at both ends of the second guide plate 19, i.e., the third extension plate 22 and mounting plate 23 are spaced apart at both ends of the second lace support plate 172 away from the first lace support plate 171.

[0046] Preferably, the second sensing rod 26 is disposed between the bottom end of the third extension plate 22 and the mounting plate 23, and the fourth sensor 27 is disposed on the third extension plate 22 or the mounting plate 23.

[0047] It should be understood that one end of the mounting plate 23 is set on the third support rod 103, and the other end of the mounting plate 23 is connected to the second sensing rod 26.

[0048] In this embodiment, a first receiving slot 401 for receiving lace fabric from the lace roll 30 on the first material rod 15 is formed between the first sensing rod 24, the first extension plate 20, the first guide plate 18, and the second extension plate 21. A second receiving slot 402 for receiving lace fabric from the lace roll 30 on the second material rod 16 is formed between the second sensing rod 26, the third extension plate 22, the second guide plate 19, and the mounting plate 23. That is, during feeding, the lace fabric from the lace roll 30 on the first material rod 15 enters from the slot 170, passes through the first guide plate 18, enters the first receiving slot 401, and is then fed into the feed inlet of the laser cutting machine. The lace fabric from the lace roll 30 on the second material rod 16 directly passes through the second guide plate 19, enters the second receiving slot 402, and is then fed into the feed inlet of the laser cutting machine.

[0049] It should be understood that since lace fabric cannot be stretched taut, it needs to be kept in a relaxed state during feeding. The first sensor rod 24 and the second sensor rod 26 are both used to detect the feeding length of the lace fabric. Under normal feeding conditions, the lace fabric will not contact the first sensor rod 24 or the second sensor rod 26. If the lace fabric contacts the first sensor rod 24 or the second sensor rod 26, it indicates that the fed fabric is too long and the length needs to be controlled. (Of course, the laser cutting machine also has corresponding feeding ports at the inlet to feed the lace fabric into the cutter.) The pushing mechanism within the cutting space (which is existing technology and will not be described in detail here) means that when the lace fabric in the first receiving slot 401 touches the first sensing rod 24, the third sensor 25 will send a signal to the laser cutting machine to control the speed of the first motor 11, thus slowing down the feeding. Similarly, when the lace fabric in the second receiving slot 402 touches the second sensing rod 26, the fourth sensor 27 will send a signal to the laser cutting machine to control the speed of the second motor 12, thus slowing down the feeding.

[0050] It is worth noting that the first sensing rod 24 and the third sensor 25 in this embodiment can be implemented using existing technology products, as can the second sensing rod 26 and the fourth sensor 27. Therefore, their working principles will not be described in detail.

[0051] Preferably, the first sensor 13 is disposed below the first lace support plate 171, and the second sensor 14 is disposed below the second lace support plate 172. It should be understood that the first sensor 13 and the second sensor 14 are used to detect the presence of lace fabric. If the first sensor 13 and the second sensor 14 are infrared sensors, the presence of lace fabric will block the light emitted by the infrared sensor, thus achieving the detection of the presence of lace fabric through this technical principle. Of course, the first sensor 13 and the second sensor 14 in this embodiment are also implemented using existing technology, and their principles and structures will not be described in detail here.

[0052] Specifically, the second support rod 102 extends to provide a first protrusion 1021, and the first protrusion 1021 extends to provide a first sensing support shaft 1022 located below the first lace support plate 171, wherein the first sensor 13 is disposed on the first sensing support shaft 1022.

[0053] Furthermore, the third support rod 103 extends to provide a second protrusion 1031, and the second protrusion 1031 extends to provide a second sensing support shaft 1032 located below the second lace support plate 1072, wherein the second sensor 14 is disposed on the second sensing support shaft 1032.

[0054] In this embodiment, the bottom end of the first extension plate 20 is provided with a first groove 201 at an angle, and the bottom end of the second extension plate 21 is provided with a second groove 211 symmetrical to the first groove 201. The first sensing rod 24 is slidably disposed within the first groove 201 and the second groove 211. That is, the size of the first receiving slot 401 can be finely adjusted by changing the position of the first sensing rod 24 on the first groove 201 and the second groove 211.

[0055] Preferably, one end of the first sensing rod 24 is threadedly connected to a first locking part 241, and the other end of the first sensing rod 24 is threadedly connected to a second locking part 242. That is, the first locking part 241 is locked onto the outer side of the first extension plate 20, and the second locking part 242 is locked onto the outer side of the second extension plate 21. In other words, both ends of the first sensing rod 24 are provided with external threads, and both the first locking part 241 and the second locking part 242 are provided with internal threaded holes. To adjust the position of the first sensing rod 24, the first sensing rod 24 can be slid on the first slide groove 201 and the second slide groove 211 by loosening the first locking part 241 and the second locking part 242, and then tightening the first locking part 241 and the second locking part 242 again can lock the first sensing rod 24 at different positions in the first slide groove 201 and the second slide groove 211.

[0056] In this embodiment, the bottom end of the third extension plate 22 is provided with a third sliding groove 221 at an angle, and the mounting plate 23 is provided with a fourth sliding groove 231 symmetrical to the third sliding groove 221. The second sensing rod 26 is slidably disposed within the third sliding groove 221 and the fourth sliding groove 231. That is, the size of the second receiving slot 402 can be finely adjusted by changing the position of the second sensing rod 26 on the third sliding groove 221 and the fourth sliding groove 231.

[0057] Preferably, one end of the second sensing rod 26 is threadedly connected to a third locking part 261, and the other end of the second sensing rod 26 is threadedly connected to a fourth locking part 262. That is, the third locking part 261 is locked onto the outer side of the third extension plate 22, and the fourth locking part 262 is locked onto the outer side of the mounting plate 23. In other words, both ends of the second sensing rod 26 are provided with external threads, and both the third locking part 261 and the fourth locking part 262 are provided with internal threaded holes. To adjust the position of the second sensing rod 26, the second sensing rod 26 can be slid in the third slide groove 221 and the fourth slide groove 231 by loosening the third locking part 261 and the fourth locking part 262, and then tightening the third locking part 261 and the fourth locking part 262 again can lock the second sensing rod 26 in different positions of the third slide groove 221 and the fourth slide groove 231.

[0058] In this embodiment, a crossbar 104 is provided between the top end of the second support rod 102 and the top end of the third support rod 103. A first adjusting rod 1041 and a second adjusting rod 1042 are provided on the crossbar 104 at intervals. The first adjusting rod 1041 is provided with a fifth sliding groove 1043 along its length direction, and the second adjusting rod 1042 is provided with a sixth sliding groove 1044 along its length direction. A fifth sensor 28 is slidably disposed in the fifth sliding groove 1043, and a sixth sensor 29 is slidably disposed in the sixth sliding groove 1044.

[0059] Preferably, the first adjusting rod 1041 is arranged parallel to and directly above the first material rod 15, and the second adjusting rod 1042 is arranged parallel to and directly above the second material rod 16. It should be understood that the fifth sensor 28 and the sixth sensor 29 are used to detect whether there is a lace roll on the material rod. If the fifth sensor 28 and the sixth sensor 29 are distance sensors, and the distance between the fifth sensor 28 and the sixth sensor 29 and the lace roll is greater than a preset distance (manually set), it indicates that the lace fabric in the lace roll is used up, and it can be notified to replace it.

[0060] It is worth noting that the first motor 11, the second motor 12, the first sensor 13, the second sensor 14, the third sensor 25, the fourth sensor 27, the fifth sensor 28, and the sixth sensor 29 in this embodiment are all electrically connected to the controller of the laser cutting machine. These sensors can be implemented using products in the prior art, and their principles and structures will not be described in detail here.

[0061] It should be noted that the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such a process, method, article, or apparatus. Without further limitation, an element defined by the phrase "comprising one..." does not exclude the presence of other identical elements in the process, method, article, or apparatus that includes said element.

Claims

1. A double lace feeding structure, comprising a first motor, a second motor, a first sensor, a second sensor, a first sensing mechanism, and a second sensing mechanism, wherein the first sensing mechanism comprises a first sensing rod and a third sensor connected to the first sensing rod, and the second sensing mechanism comprises a second sensing rod and a fourth sensor connected to the second sensing rod, characterized in that, Also includes: A bracket is installed on one side of the base of a laser cutting machine. The bracket includes a support platform, a first support rod vertically installed on one side of the support platform, and a second support rod and a third support rod spaced apart on the other side of the support platform. The first motor and the second motor are installed between the top of the second support rod and the top of the third support rod. The first material rod is used to install the lace roll, and is rotatably set between the top end of the second support rod and the top end of the third support rod via the first mounting component, wherein the rotating shaft of the first motor is connected to the first material rod so as to drive the first material rod to rotate through the first motor; The second material rod is used to install the lace roll. It is rotatably set between the top end of the second support rod and the top end of the third support rod via the second mounting component. The rotating shaft of the second motor is connected to the second material rod so that the second material rod can be driven to rotate by the second motor. A lace support plate is inclinedly disposed above the support platform, wherein the lace support plate has a slot along its width direction to divide the lace support plate into a first lace support plate located below the first material rod and a second lace support plate located below the second material rod. The first guide plate is vertically downward disposed at one end of the first lace support plate near the second lace support plate; The second guide plate is vertically downward positioned at the end of the second lace support plate away from the first lace support plate; A first extension plate and a second extension plate are spaced apart at both ends of the first guide plate, wherein the first sensing rod is disposed between the bottom end of the first extension plate and the bottom end of the second extension plate, and the third sensor is disposed on the first extension plate or the second extension plate. A third extension plate is disposed at one end of the second guide plate; A mounting plate is disposed at the other end of the second guide plate, wherein the second sensing rod is disposed between the bottom end of the third extension plate and the mounting plate, and the fourth sensor is disposed on the third extension plate or the mounting plate; A first receiving slot for receiving lace fabric for threading a lace roll on the first material rod is formed between the first sensing rod, the first extension plate, the first guide plate, and the second extension plate. A second receiving slot for receiving lace fabric for threading a lace roll on the second material rod is formed between the second sensing rod, the third extension plate, the second guide plate, and the mounting plate. The first sensor is located below the first lace support plate, and the second sensor is located below the second lace support plate.

2. The double lace feeding structure according to claim 1, characterized in that, The end of the first lace support plate away from the second lace support plate is disposed between the first support rod and the second support rod, and the end of the second lace support plate away from the first lace support plate is disposed on the third support rod. The first lace support plate and the second lace support plate are on the same plane, and the horizontal plane at one end of the first lace support plate is higher than the horizontal plane at the other end of the second lace support plate.

3. The double lace feeding structure according to claim 1, characterized in that, The second support rod extends with a first protrusion, and the first protrusion extends with a first sensing support shaft located below the first lace support plate. The first sensor is disposed on the first sensing support shaft. The third support rod extends with a second protrusion, and the second protrusion extends with a second sensing support shaft located below the second lace support plate. The second sensor is disposed on the second sensing support shaft.

4. The double lace feeding structure according to claim 1, characterized in that, The bottom end of the first extension plate is provided with a first sliding groove at an angle, and the bottom end of the second extension plate is provided with a second sliding groove symmetrical to the first sliding groove, wherein the first sensing rod is slidably disposed in the first sliding groove and the second sliding groove.

5. The double lace feeding structure according to claim 4, characterized in that, One end of the first sensing rod is threadedly connected to a first locking part, and the other end of the first sensing rod is threadedly connected to a second locking part.

6. The double lace feeding structure according to claim 1, characterized in that, The bottom end of the third extension plate is provided with a third sliding groove at an incline, and the mounting plate is provided with a fourth sliding groove symmetrical to the third sliding groove, wherein the second sensing rod is slidably disposed in the third sliding groove and the fourth sliding groove.

7. The double lace feeding structure according to claim 6, characterized in that, One end of the second sensing rod is threadedly connected to a third locking part, and the other end of the second sensing rod is threadedly connected to a fourth locking part.

8. The double lace feeding structure according to claim 1, characterized in that, The first material rod and the second material rod are set on the same horizontal plane.

9. The double lace feeding structure according to claim 1, characterized in that, A crossbar is provided between the top end of the second support rod and the top end of the third support rod. A first adjusting rod and a second adjusting rod are provided on the crossbar at intervals. The first adjusting rod is provided with a fifth sliding groove along its length direction, and the second adjusting rod is provided with a sixth sliding groove along its length direction. A fifth sensor is slidably disposed in the fifth sliding groove, and a sixth sensor is slidably disposed in the sixth sliding groove.

10. The double lace feeding structure according to claim 9, characterized in that, The first adjusting rod is arranged parallel to the first material rod and is located directly above the first material rod, and the second adjusting rod is arranged parallel to the second material rod and is located directly above the second material rod.