A wire feeding abnormal alarm mechanism and a wire feeding device composed thereof

Abstract

The present invention discloses a wire feeding abnormal alarm mechanism and a wire feeding device composed thereof, including a traction assembly, a detection assembly, an alarm and a mounting plate. The traction assembly and the detection assembly are both mounted on the mounting plate. The wire is detected by the detection assembly and conveyed by the traction assembly. The alarm is electrically connected to the power supply through the detection assembly. The detection assembly is used to detect whether there is an abnormality during the wire feeding process, and the alarm is used to issue an alarm when an abnormality is detected. Its structure is simple. The detection assembly detects whether there is an abnormality in the wire conveyed by the traction assembly during the conveying process. If there is an abnormality, the alarm can be activated to issue an alarm to remind the staff.

Description

Technical Field

[0001] The present invention belongs to the field of soldering devices, and particularly relates to a wire feeding abnormal alarm mechanism and a wire feeding device composed thereof. Background Art

[0002] Heating the connection part by a laser soldering machine and feeding solder wire to fill the solder pad is an important technical means to solve laser non-contact selective soldering. The accuracy of this solder wire feeding method is also very high. However, during the process of feeding and returning the solder wire, it is inevitable to encounter situations such as the solder wire being broken or used up. If the problem cannot be handled in time, it will not only generate waste but also waste production time and result in low efficiency. The traditional method is to rely on manual on-duty, which wastes labor. In addition, because the laser spot is relatively small after focusing, when heating the solder pad of electronic products, the solder must be accurately transported to the solder pad part heated by the spot. If there is a slight mistake, such as the position being incorrect and the wire being sent to the wrong place, or the temperature is not enough and the solder wire cannot melt, it will cause the wire feeding mechanism for transporting the solder wire to be blocked, resulting in the problem that the solder wire cannot be transported again. Summary of the Invention

[0003] In order to solve the above technical problems, the purpose of the present invention is to provide a wire feeding abnormal alarm mechanism with a simple structure and high sensitivity.

[0004] In order to achieve the above purpose, the technical solution of the present invention is as follows: A wire feeding abnormal alarm mechanism includes a traction component, a detection component, an alarm and a mounting plate. The traction component and the detection component are both mounted on the mounting plate. The wire is detected by the detection component and transported by the traction component. The alarm is electrically connected to the power supply through the detection component. The detection component is used to detect whether there is an abnormality during the wire feeding process, and the alarm is used to issue an alarm when an abnormality is detected.

[0005] The beneficial effect of the above technical solution is that: its structure is simple, and the detection component detects whether there is an abnormality in the wire transported by the traction component during the transportation process. If there is an abnormality, the alarm can be activated to issue an alarm to remind the staff.

[0006] In the above technical solution, the detection component is a wire break induction component or a wire blockage induction component. The wire break induction component is used to sense whether the wire breaks during the wire feeding process; the wire blockage induction component is used to sense whether the wire feeding is smooth.

[0007] The beneficial effect of the above technical solution is that: if the detection component is a wire break induction component, it is used to detect whether there is a wire break during the wire feeding process. If the detection component is a wire blockage induction component, it is used to detect whether there is a wire blockage during the wire feeding process.

[0008] The detection component in the above technical scheme includes a broken wire sensing component and a blocked wire sensing component, both of which are installed on the mounting plate, the wire is detected by the broken wire sensing component and the blocked wire sensing component respectively, and is pulled and transported by the traction component, the broken wire sensing component is used to sense whether the wire is broken during the transportation process, and the blocked wire sensing component is used to sense whether the wire is smoothly transported, the broken wire sensing component and the blocked wire sensing component are arranged in parallel, and the alarm is electrically connected to the power supply through the broken wire sensing component and the blocked wire sensing component; or two alarms are provided, one of which is electrically connected to the power supply through the broken wire sensing component, and the other is electrically connected to the power supply through the blocked wire sensing component.

[0009] The beneficial effect of the above technical solution is that the detection component is used to detect whether there is wire blockage or wire breakage during the wire feeding process, and if there is wire blockage or wire breakage, the alarm will sound an alarm.

[0010] The traction assembly in the above technical solution includes a driving device, a driving wheel and a passive wheel, the driving wheel and the passive wheel are respectively placed vertically on the mounting plate, the driving device is installed on the mounting plate, and its driving end is transmission connected to the driving wheel, the wheel surfaces of the driving wheel and the passive wheel are in contact with each other, the silk thread passes between the driving wheel and the passive wheel, and the driving device drives the driving wheel to drive the passive wheel to rotate synchronously in the opposite direction to convey the silk thread.

[0011] The beneficial effects of the above technical solution are: its structure is simple, the active wheel directly drives the passive wheel to rotate, and the silk thread is transported through the contact point between the two wheels, and its transportation is simple.

[0012] The broken wire sensing component in the above technical solution includes a first sensor, an elastic triggering member and two wire guide members, the first sensor, the elastic triggering member and the two wire guide members are all installed on the mounting plate, and the two wire guide members are spaced apart on the mounting plate, both of which are provided with a first through hole parallel to and passing through the mounting plate, the silk thread passes through the first through hole on the two wire guide members, the elastic triggering member and the first sensor are respectively located on one side between the two wire guide members, the silk thread contacts the triggering end of the elastic triggering member to avoid the triggering end of the elastic triggering member exciting the first sensor and then generating a sensing signal, after the silk thread breaks, the triggering end of the elastic triggering member moves close to the first sensor under the action of its elastic tension to generate a sensing signal, thereby activating the alarm to sound an alarm.

[0013] The beneficial effects of the above technical solution are as follows: Its structure is simple. Under normal circumstances, the silk thread pulls the elastic trigger member to bend away from the first inductor. At this time, the first inductor does not generate an induction signal. If the silk thread breaks, the silk thread loses its pulling effect on the elastic trigger member, triggering the first inductor to generate a signal to activate the alarm to sound an alarm.

[0014] In the above technical solution, the elastic trigger member includes a spring piece and a first trigger rod. The first inductor is spaced on the same side of the two wire guiding members. The spring piece is located between the two wire guiding members and the first inductor. One end of the spring piece is fixedly arranged on the mounting plate and is located on one side of the two wire guiding members. The two ends of the spring piece are respectively close to the two wire guiding members. The middle part corresponding to the length direction of the first trigger rod is vertically connected to the other end of the spring piece, and the first trigger rod is parallel to the mounting plate. A wire hole parallel to the first through hole is provided at one end of the first trigger rod away from the first inductor. The silk thread between the two wire guiding members passes through the wire hole and bends the spring piece so that the first trigger rod moves away from the first inductor. After the silk thread breaks, the spring piece drives the first trigger rod to move close to the first inductor under the action of its elastic tension to generate an induction signal, thereby activating the alarm to sound an alarm.

[0015] The beneficial effects of the above technical solution are as follows: Its structure is simple and its stability is good.

[0016] In the above technical solution, the wire jamming induction component includes a second inductor and an elastic telescopic member. The second inductor and the elastic telescopic member are both arranged on the mounting plate, and the elastic telescopic member extends and retracts along the plate surface of the mounting plate. A second through hole is provided on the elastic telescopic member along its telescopic direction. The silk thread passes through the second through hole. The second inductor is arranged on one side of the elastic telescopic member. When the silk thread knots, the knot of the silk thread moves under the traction of the traction component to block the second through hole and drives the elastic telescopic member to contract to trigger the second inductor to generate an induction signal, thereby activating the alarm to sound an alarm.

[0017] The beneficial effects of the above technical solution are as follows: Its structure is simple. If there is a knot on the silk thread, when the knot is transported to the elastic telescopic member, it will block the second through hole and pull the elastic telescopic member to contract, causing the second inductor to generate an induction signal to activate the alarm.

[0018] In the above technical solution, the elastic telescopic member includes a housing, a slider, and an elastic member. The housing is horizontally installed on the mounting plate and has open ends at both ends. One end of the slider extends into the interior of one end of the housing, and the housing has an inwardly turned edge at one end. The slider has outwardly turned edges at both ends. The slider can slide until the outwardly turned edge at either end thereof abuts against or separates from the inwardly turned edge on the housing. The elastic member is disposed outside the housing and is connected between the housing and the other end of the slider. The second through hole is provided on the slider and penetrates both ends of the slider. The end of the second through hole located outside the housing is its wire feeding end, and the other end is its wire discharging end.

[0019] The beneficial effect of the above technical solution is that it has a simple structure and sensitive detection.

[0020] In the above technical solution, the elastic member is a spring, and the spring is sleeved outside the slider.

[0021] The beneficial effect of the above technical solution is that it has a simple structure.

[0022] The second object of the present invention is to provide a wire feeding device with a simple structure.

[0023] To achieve the above object, another technical solution of the present invention is as follows: A wire feeding device, characterized in that it includes a wire reel, an air shaft, and the wire feeding abnormality alarm mechanism as described above. One end of the air shaft is installed on a support frame through a damping bearing. The wire reel is detachably installed on the air shaft, and the unwinding end of the wire reel is conveyed through the wire feeding abnormality alarm mechanism.

[0024] The beneficial effect of the above technical solution is that it has a simple structure, and installing the air shaft on the support frame through a damping bearing can keep the wire in a taut state between it and the traction assembly. BRIEF DESCRIPTION OF THE DRAWINGS

[0025] Figure 1 It is a structural schematic diagram of the wire feeding abnormality alarm mechanism according to Embodiment 1 of the present invention;

[0026] Figure 2 It is another structural schematic diagram of the wire feeding abnormality alarm mechanism according to Embodiment 1 of the present invention;

[0027] Figure 3 It is an electrical connection diagram of the wire breakage induction component and the alarm according to Embodiment 1 of the present invention;

[0028] Figure 4 It is a structural schematic diagram of the wire feeding abnormality alarm mechanism according to Embodiment 2 of the present invention;

[0029] Figure 5Another structural schematic diagram of the wire feeding abnormal alarm mechanism described in Embodiment 2 of the present invention;

[0030] Figure 6 Structural schematic diagram of the elastic telescopic member described in Embodiment 2 of the present invention;

[0031] Figure 7 Electrical connection diagram of the wire breakage induction component and the alarm described in Embodiment 2 of the present invention;

[0032] Figure 8 Structural schematic diagram of the wire feeding abnormal alarm mechanism described in Embodiment 3 of the present invention;

[0033] Figure 9 Electrical connection diagram of the wire breakage induction component, the wire blockage induction component and the alarm described in Embodiment 3 of the present invention;

[0034] Figure 10 Another electrical connection diagram of the wire breakage induction component, the wire blockage induction component and the alarm described in Embodiment 3 of the present invention;

[0035] Figure 11 Structural schematic diagram of the wire feeding device described in Embodiment 4 of the present invention.

[0036] In the figure: 1 wire feeding abnormal alarm mechanism, 11 traction component, 111 driving device, 112 driving wheel, 113 driven wheel, 121 wire breakage induction component, 1211 first inductor, 1212 elastic trigger member, 12121 elastic sheet, 12122 first trigger rod, 1213 wire guiding member, 122 wire blockage induction component, 1221 second inductor, 1222 elastic telescopic member, 12221 housing, 12222 slider, 12223 elastic member, 12224 second trigger rod, 13 alarm, 14 mounting plate, 2 wire reel, 3 air shaft, 31 support frame. Detailed implementation manners

[0037] The principles and features of the present invention will be described below with reference to the accompanying drawings. The examples given are only used to explain the present invention and are not intended to limit the scope of the present invention.

[0038] Embodiment 1

[0039] As Figure 1 and Figure 3As shown, this embodiment provides a wire feeding abnormality alarm mechanism, including a traction component 11, a detection component, an alarm 13 and a mounting plate 14, the traction component 11 and the detection component are both mounted on the mounting plate 14, the wire is detected by the detection component and transported by the traction component, the alarm 13 is electrically connected to the power supply through the detection component, the detection component is used to detect whether there is an abnormality in the wire feeding process, and the alarm 13 is used to sound an alarm when an abnormality is detected. Its structure is simple, the detection component detects whether the wire transported by the traction component is abnormal during the transportation process, and if there is an abnormality, the alarm can be activated to sound an alarm to remind the staff.

[0040] The detection component in the above technical solution is a broken wire sensing component 121, and the broken wire sensing component 121 is used to sense whether the wire is broken during the wire feeding process.

[0041] The traction assembly 11 in the above technical solution includes a driving device 111, a driving wheel 112 and a passive wheel 113, the driving wheel 112 and the passive wheel 113 are respectively placed vertically on the mounting plate 14, the driving device 111 is installed on the mounting plate 14, and its driving end is transmission-connected to the driving wheel 112, the wheel surfaces of the driving wheel 112 and the passive wheel 113 fit each other, the silk thread passes between the driving wheel 112 and the passive wheel 113, and the driving device 111 drives the driving wheel 112 to drive the passive wheel 113 to rotate synchronously in the opposite direction to convey the silk thread, the structure is simple, the driving wheel directly drives the passive wheel to rotate, and the silk thread is conveyed through the fitting point of the two, and the conveying is simple.

[0042] like Figure 2As shown, in the above technical solution, the broken wire induction component 121 includes a first inductor 1211, an elastic trigger 1212, and two wire guiding members 1213. The first inductor 1211, the elastic trigger 1212, and the two wire guiding members 1213 are all installed on the mounting plate 14. The two wire guiding members 1213 are spaced apart on the mounting plate 14, and both are provided with first through holes penetrating therethrough and parallel to the mounting plate 14. The two first through holes are located on the same straight line. The wire passes through the first through holes on the two wire guiding members 1213. The elastic trigger 1212 and the first inductor 1211 are respectively located on the sides between the two wire guiding members 1213. The wire contacts the trigger end of the elastic trigger 1212 to prevent the trigger end of the elastic trigger 1212 from activating the first inductor 1211 to generate an induction signal. After the wire breaks, the trigger end of the elastic trigger 1212 moves close to the first inductor 1211 under the action of its elastic tension to generate an induction signal and activate the alarm 13 to emit an alarm. Its structure is simple. Under normal circumstances, the wire pulls the elastic trigger to bend away from the first inductor, and at this time the first inductor does not generate an induction signal. If the wire breaks, the wire loses its pulling effect on the elastic trigger and triggers the first inductor to generate a signal to activate the alarm to emit an alarm.

[0043] In the above technical solution, the elastic trigger 1212 includes a spring piece 12121 and a first trigger rod 12122. The first inductor 1211 is spaced on the same side of the two wire guiding members 1213. The spring piece 12121 is located between the two wire guiding members 1213 and the first inductor 1211. One end of the spring piece 12121 is fixedly arranged on the mounting plate 14 and is located on one side of the two wire guiding members 1213, and its two ends are respectively close to the two wire guiding members 1213. The middle part corresponding to the length direction of the first trigger rod 12122 is vertically connected to the other end of the spring piece 12121, and the first trigger rod 12122 is parallel to the mounting plate. A wire hole parallel to the first through hole is provided at the end of the first trigger rod 12122 facing away from the first inductor 1211. The wire between the two wire guiding members 1213 passes through the wire hole and bends the spring piece 12121 so that the first trigger rod 12122 is far away from the first inductor 1211. After the wire breaks, the spring piece 12121 drives the first trigger rod 12122 to move close to the first inductor 1211 under the action of its elastic tension to generate an induction signal and activate the alarm 13 to emit an alarm. Its structure is simple and the stability is good.

[0044] Preferably, the first sensor is a proximity switch or a vibration switch. When the first sensor is a vibration switch, after the wire breaks, the first trigger rod rebounds under the action of the elastic piece to impact the vibration switch, so as to connect the alarm with the power supply. Preferably, the alarm is an audible and visual alarm.

[0045] Embodiment 2

[0046] As Figure 4 shown, similar to Embodiment 1, the difference is that in the above technical solution, the detection component is a wire jamming induction component 122, and the wire jamming induction component 122 is used to sense whether the wire feeding is smooth.

[0047] As Figure 5 and Figure 7 shown, in the above technical solution, the wire jamming induction component 122 includes a second sensor 1221 and an elastic telescopic member 1222. The second sensor 1221 and the elastic telescopic member 1222 are both placed on the mounting plate 14, and the elastic telescopic member 1222 telescopically moves along the plate surface of the mounting plate 14. A second through hole is provided on the elastic telescopic member 1222 along its telescopic direction, and the wire passes through the second through hole. The second sensor 1221 is arranged on one side of the elastic telescopic member 1222. When the wire knots, the knotted part of the wire moves under the traction of the traction component to block the second through hole, and drives the elastic telescopic member 1222 to contract to trigger the second sensor 1221 to generate an induction signal, thereby starting the alarm 13 to give an alarm. Its structure is simple. If there is a knot on the wire, the knotted part will block the second through hole when it is conveyed to the elastic telescopic member, and will pull the elastic telescopic member to contract so that the second sensor generates an induction signal to start the alarm.

[0048] As Figure 6 shown, in the above technical solution, the elastic telescopic member 1222 includes a housing 12221, a slider 12222 and an elastic member 12223. The housing 12221 is horizontally installed on the mounting plate 14, and both ends thereof are open. One end of the slider 12222 extends into one end inside the housing 12221, and the housing 12221 is provided with an inward flanging at one end. The slider 12222 is provided with outward flangings at both ends. The slider 12222 can slide until the outward flanging at any one end thereof abuts against or separates from the inward flanging on the housing 12221. The elastic member 12223 is placed outside the housing 12221 and is connected between the housing 12221 and the other end of the slider 12222. The second through hole is provided on the slider 12222 and penetrates through both ends of the slider 12222. The end of the second through hole located outside the housing 12221 is the wire feeding end, and the other end is the wire sending end. Its structure is simple and the detection is sensitive.

[0049] In the above technical solution, the elastic member 12223 is a spring, and the spring is sleeved outside the slider 12221.

[0050] Preferably, the second sensor is a proximity switch, and a second trigger rod 12224 is provided at one end of the slider outside the housing. The second trigger rod is parallel to the mounting plate and perpendicular to the second through hole. The elastic telescopic member contracts and drives the second trigger rod to move close to the sensing portion of the second sensor to activate the second sensor to generate a sensing signal to activate the alarm to emit an alarm sound.

[0051] Embodiment 3

[0052] As Figures 8 - 10 shown, similar to Embodiment 1 and Embodiment 2, the difference is that in the above technical solution, the detection component includes a broken wire sensing component 121 as described in Embodiment 1 and a blocked wire sensing component 122 as described in Embodiment 2. The broken wire sensing component 121 and the blocked wire sensing component 122 are both mounted on the mounting plate 14. The wire is respectively detected by the broken wire sensing component 121 and the blocked wire sensing component 122, and is traction-transported by the traction component 11. The broken wire sensing component 121 is used to sense whether the wire breaks during the transportation process, and the blocked wire sensing component 122 is used to sense whether the wire transportation process is smooth. And the alarm 13 is electrically connected to the power supply through the broken wire sensing component 121 and the blocked wire sensing component 122, and the broken wire sensing component 121 and the blocked wire sensing component 122 are arranged in parallel. When the broken wire sensing component 121 senses that the wire breaks or the blocked wire sensing component 122 senses that the wire is blocked, the alarm can be activated to emit an alarm; or there are two alarms 13, one of the alarms 13 is electrically connected to the power supply through the broken wire sensing component 121, and the other alarm 13 is electrically connected to the power supply through the blocked wire sensing component 122. When the broken wire sensing component 121 senses that the wire breaks or the blocked wire sensing component 122 senses that the wire is blocked, the corresponding alarm 13 can be activated to emit an alarm. The detection component is used to detect whether there is wire blockage and wire breakage during the wire feeding process. If there is wire blockage or wire breakage, the alarm will emit an alarm.

[0053] Embodiment 4

[0054] As Figure 11As shown in the figure, this embodiment provides a wire feeding device, which is characterized by including a wire coil 2, an air shaft 3, and a wire feeding abnormal alarm mechanism 1 as described in Embodiment 1 or Embodiment 2 or Embodiment 3. One end of the air shaft 3 is installed on a support frame 31 through a damping bearing. The wire coil 2 is detachably installed on the air shaft 3. The unwinding end of the wire coil 2 is conveyed through the wire feeding abnormal alarm mechanism 1. Its structure is simple, and installing the air shaft on the support frame through a damping bearing can make the wire in a straightened state between it and the traction assembly.

[0055] The above are only the preferred embodiments of the present invention and are not intended to limit the present invention. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principles of the present invention shall be included in the protection scope of the present invention.

Claims

1. A wire feeding abnormality alarm mechanism, It is characterized in that It includes a traction component (11), a detection component, an alarm (13) and a mounting plate (14). The traction component (11) and the detection component are both mounted on the mounting plate (14). The wire is detected by the detection component and conveyed by the traction component. The alarm (13) is electrically connected to the power supply through the detection component. The detection component is used to detect whether there is an abnormality during the wire feeding process. The alarm (13) is used to issue an alarm when an abnormality is detected. The detection component includes a wire break induction component (121) and a wire blockage induction component (122). The wire break induction component (121) and the wire blockage induction component (122) are both mounted on the mounting plate (14). The wire is respectively detected by the wire break induction component (121) and the wire blockage induction component (122), and is traction-conveyed by the traction component (11). The wire break induction component (121) is used to sense whether the wire breaks during the conveying process, and the wire blockage induction component (122) is used to sense whether the wire conveying process is smooth. The wire break induction component (121) includes a first inductor (1211), an elastic trigger (1212) and two wire guiding members (1213). The first inductor (1211), the elastic trigger (1212) and the two wire guiding members (1213) are all mounted on the mounting plate (14), and the two wire guiding members (1213) are spaced apart on the mounting plate (14). Both of them are provided with a first through hole parallel to and penetrating the mounting plate (14). The wire passes through the first through holes on the two wire guiding members (1213). The elastic trigger (1212) and the first inductor (1211) are respectively located on one side between the two wire guiding members (1213). The wire contacts the trigger end of the elastic trigger (1212) to prevent the trigger end of the elastic trigger (1212) from activating the first inductor (1211) to generate an induction signal. After the wire breaks, the trigger end of the elastic trigger (1212) moves close to the first inductor (1211) under the action of its elastic tension to generate an induction signal, thereby starting the alarm (13) to issue an alarm;The elastic trigger member (1212) includes a leaf spring (12121) and a first trigger rod (12122). The first inductor (1211) is spaced on the same side of the two wire guiding members (1213). The leaf spring (12121) is located between the two wire guiding members (1213) and the first inductor (1211). One end of the leaf spring (12121) is fixedly arranged on the mounting plate (14) and is located on one side of the two wire guiding members (1213). The two ends of the leaf spring (12121) are respectively close to the two wire guiding members (1213). The middle part corresponding to the length direction of the first trigger rod (12122) is vertically connected to the other end of the leaf spring (12121), and the first trigger rod (12122) is parallel to the mounting plate (14). A wire hole parallel to the first through hole is provided at the end of the first trigger rod (12122) facing away from the first inductor (1211). The wire between the two wire guiding members (1213) passes through the wire hole and bends the leaf spring (12121) so that the first trigger rod (12122) moves away from the first inductor (1211). After the wire breaks, the leaf spring (12121) drives the first trigger rod (12122) to move close to the first inductor (1211) under the action of its elastic tension to generate an induction signal, thereby starting the alarm (13) to give an alarm; The wire jamming induction assembly (122) includes a second inductor (1221) and an elastic telescopic member (1222). The second inductor (1221) and the elastic telescopic member (1222) are both arranged on the mounting plate (14), and the elastic telescopic member (1222) telescopically moves along the surface of the mounting plate (14). A second through hole is provided on the elastic telescopic member (1222) along its telescopic direction. The wire passes through the second through hole. The second inductor (1221) is arranged on one side of the elastic telescopic member (1222). When the wire knots, the knot of the wire moves under the traction of the traction assembly to block the second through hole and drives the elastic telescopic member (1222) to contract to activate the second inductor (1221) to generate an induction signal, thereby starting the alarm (13) to give an alarm;The elastic telescopic member (1222) includes a housing (12221), a slider (12222) and an elastic member (12223). The housing (12221) is horizontally installed on the mounting plate (14) and has open ends at both ends. One end of the slider (12222) extends into one end of the housing (12221), and the housing (12221) is provided with an inward flanging at one end. The slider (12222) is provided with outward flangings at both ends. The slider (12222) can slide until the outward flanging at any one of its ends abuts against or separates from the inward flanging on the housing (12221). The elastic member (12223) is placed outside the housing (12221) and is connected between the housing (12221) and the other end of the slider (12222). The second through hole is provided on the slider (12222) and penetrates through both ends of the slider (12222). The end of the second through hole located outside the housing (12221) is its wire feeding end, and the other end is its wire sending end; the first sensor is a proximity switch or a vibration switch, and the second sensor is a proximity switch.; 2. According to claim 1, the wire feeding abnormality alarm mechanism, It is characterized in that The broken wire sensing component (121) and the blocked wire sensing component (122) are arranged in parallel, and the alarm (13) is electrically connected to a power source via the broken wire sensing component (121) and the blocked wire sensing component (122); or two alarms (13) are provided, one of which is electrically connected to a power source via the broken wire sensing component (121), and the other of which is electrically connected to a power source via the blocked wire sensing component (122).

3. The wire feeding abnormality alarm mechanism according to claim 1 or 2, It is characterized in that The traction assembly (11) comprises a driving device (111), a driving wheel (112) and a passive wheel (113); the driving wheel (112) and the passive wheel (113) are respectively vertically arranged on the mounting plate (14); the driving device (111) is mounted on the mounting plate (14), and a driving end thereof is drivingly connected to the driving wheel (112); the wheel surfaces of the driving wheel (112) and the passive wheel (113) are in contact with each other; the silk thread passes between the driving wheel (112) and the passive wheel (113); and the driving device (111) drives the driving wheel (112) to drive the passive wheel (113) to rotate synchronously in the opposite direction to convey the silk thread.

4. The wire feeding abnormality alarm mechanism according to claim 1, It is characterized in that The elastic member (12223) is a spring, which is sleeved outside the slider (12221).

5. A wire feeding device, It is characterized in that It comprises a wire roll (2), an inflatable shaft (3) and a wire feeding abnormality alarm mechanism (1) as described in any one of claims 1 to 4, and one end of the inflatable shaft (3) is mounted on a support frame (31) via a damping bearing, the wire roll (2) is detachably mounted on the inflatable shaft (3), and the unwinding end of the wire roll (2) is transported via the wire feeding abnormality alarm mechanism (1).

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