Hanger fault detection device and circuit board electroplating equipment

Abstract

The utility model discloses a hanging tool fault detection device and circuit board electroplating equipment, and relates to the technical field of circuit board electroplating, the hanging tool fault detection device comprises a support, a chain, a hanging tool assembly and a detection assembly, the chain is arranged on the support, the hanging tool assembly comprises a hanging tool main body and a chain wheel, the hanging tool body can slide on the support in the first direction, the chain wheel is arranged on the hanging tool body in a one-way rotating mode and can be separated from or meshed with the chain, the detection assembly is arranged on the support, and when the hanging tool body slides on the support in the first direction, the chain wheel is driven to move and meshed with the chain. If the chain wheel is stuck due to factors such as rusting at the moment, the chain wheel cannot rotate anticlockwise, and the chain wheel jumps upwards to a preset height due to the fact that the wheel teeth slidably abut against the roller of the chain, the detection assembly detects the fault of the chain wheel and sends out an alarm signal to prompt workers to check and maintain in time; and the production quality of the circuit board and the stability of the electroplating process are ensured.

Description

Technical Field

[0001] The utility model relates to the technical field of circuit board electroplating, in particular to a hanger fault detection device and circuit board electroplating equipment. Background Art

[0002] Current PCB electroplating equipment typically uses a rack to carry the PCBs within the plating tank for electroplating. The rack is typically equipped with a sprocket mechanism for transmission. However, existing equipment often experiences problems with the rack's one-way sprocket becoming stuck and unable to rotate due to factors such as rust. This affects the stability of the PCB conveying process, leading to uneven plating and delamination of the PCBs, and in severe cases, the PCBs can be scrapped. Utility Model Content

[0003] The main purpose of the utility model is to provide a hanger fault detection device and circuit board electroplating equipment, which are intended to promptly remind staff of hanger faults to ensure the electroplating quality of the circuit board.

[0004] To achieve the above-mentioned purpose, the rack fault detection device proposed in the present invention is applied to a circuit board electroplating device, wherein the circuit board electroplating device includes an electroplating cylinder, and the rack fault detection device includes:

[0005] a bracket, wherein a chain is provided on the bracket;

[0006] A hanger assembly, comprising a hanger body and a sprocket, wherein the hanger body is movably mounted on the bracket, the sprocket is unidirectionally rotatably mounted on the hanger body, the sprocket and the chain are detachable or engageable, and the hanger body is configured to drive the sprocket to move along the chain in a first direction and to drive the circuit board to move in the electroplating tank for electroplating;

[0007] A detection component is provided on the bracket, and is used for sending an alarm signal when it is detected that the sprocket jumps to a preset height due to a fault.

[0008] In one embodiment, the hanger assembly further includes a mounting seat, which is rotatably disposed on the hanger body, and the sprocket is rotatably disposed on the mounting seat and spaced apart from the hanger body. The sprocket jumps to a preset height on the chain due to a fault to rotate the mounting seat and trigger the detection assembly.

[0009] In one embodiment, the detection component includes a sensor, which is arranged above the chain to form an avoidance channel between the sensor and the chain for the mounting seat and the sprocket to pass through. The sprocket jumps to a preset height on the chain due to a fault so that the mounting seat rotates away from the chain and abuts the sensor.

[0010] In one embodiment, the sensor is provided with a probe on the side facing the chain, and the mounting seat is provided with an abutment surface on the side away from the chain. When the sprocket jumps on the chain due to a fault, the mounting seat rotates to make the abutment surface slide and abut against the probe.

[0011] In one embodiment, the detection component includes at least two sensors, the spacing value between the contact points of the probes of two adjacent sensors and the abutment surface is L, the pitch value of the chain is P, and the L and P values ​​satisfy: L=P / 2+n*P, where n is an integer greater than or equal to 0.

[0012] In one embodiment, the mounting seat is rotatably connected to the hanger body via a first rotating shaft, the sprocket is rotatably connected to the mounting seat via a second rotating shaft, and the distance between the first rotating shaft and the chain is greater than the distance between the second rotating shaft and the chain.

[0013] In one embodiment, the chain is movably provided on the bracket along the first direction, and the movement speed of the chain is a preset value, so as to drive the hanger assembly to move via the sprocket;

[0014] Alternatively, the chain is fixedly arranged on the bracket.

[0015] In one embodiment, the hanger fault detection device further includes a guide assembly, a guide rail is provided on the bracket extending along the first direction, a slide groove is formed on the guide assembly, and the guide assembly is provided on the hanger body and is slidably connected to the guide rail through the slide groove.

[0016] In one embodiment, the hanger assembly further includes a clamp, and the clamp is provided at one end of the hanger body away from the sprocket, and the clamp is used to clamp the circuit board.

[0017] The utility model also provides a circuit board electroplating device, comprising the hanger fault detection device in any of the aforementioned embodiments.

[0018] The technical solution of the utility model adopts a hanger fault detection device to detect whether the sprocket in the hanger assembly is stuck. Specifically, the hanger fault detection device includes a bracket, a chain, a hanger assembly and a detection assembly, the chain is arranged on the bracket, the hanger assembly includes a hanger body and a sprocket, the hanger body can slide on the bracket along a first direction, the sprocket can be unidirectionally rotatably arranged on the hanger body and can be separated or meshed with the chain, and the detection assembly is arranged on the bracket, when the hanger body slides on the bracket along the first direction, it drives the sprocket to move and engage with the chain. If the sprocket rotates counterclockwise at this time, the gear teeth are sequentially embedded in the chain gap, indicating that the sprocket is working normally; if the sprocket is stuck due to rust or other factors at this time, the sprocket cannot rotate counterclockwise, the gear teeth slide and abut against the rollers of the chain, causing the sprocket to jump upward to a preset height, the detection assembly detects the fault of the sprocket and sends an alarm signal, prompting the staff to conduct investigation and maintenance in time to ensure the production quality of the circuit board and the stability of the electroplating process. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the following briefly introduces the drawings required for use in the embodiments or the description of the prior art. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on the structures shown in these drawings without paying any creative work.

[0020] Figure 1 This is a structural diagram of an embodiment of a hanger fault detection device provided by the present utility model;

[0021] Figure 2 for Figure 1 A partial enlarged view of point A in the middle;

[0022] Figure 3 This is a schematic diagram of the disassembled structure of an embodiment of a hanger fault detection device provided by the present utility model;

[0023] Figure 4 A side view of an embodiment of a hanger fault detection device provided by the present invention;

[0024] Figure 5 This is a structural schematic diagram of a sprocket failure in an embodiment of a hanger failure detection device provided by the present invention;

[0025] Figure 6 This is a schematic structural diagram of the engagement between the sprocket and the chain in one embodiment of the hanger fault detection device provided by the present invention;

[0026] Figure 7 This is a structural schematic diagram of the guide assembly in an embodiment of the hanger fault detection device provided by the present invention.

[0027] Description of Figure Numbers:

[0028] 100. Hanger fault detection device; 110. Bracket; 111. Mounting plate; 112. Guide rail; 120. Chain; 121. Roller; 130. Hanger assembly; 131. Hanger body; 132. Sprocket; 1321. Gear teeth; 133. Mounting seat; 133a. Abutment surface; 134. First rotating shaft; 135. Second rotating shaft; 136. Connector; 137. Clamp; 140. Detection assembly; 141. Sensor; 1411. Probe; 150. Guide assembly; 150a. Slide groove; 151. Slider; 152. Guide wheel.

[0029] The realization of the purpose, functional features and advantages of the present invention will be further explained in conjunction with embodiments and with reference to the accompanying drawings. DETAILED DESCRIPTION

[0030] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the embodiments described are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts shall fall within the scope of protection of the present invention.

[0031] It should be noted that if the embodiments of the present invention involve directional indications (such as up, down, left, right, front, back, etc.), the directional indications are only used to explain the relative position relationship, movement status, etc. between the components in a certain specific posture. If the specific posture changes, the directional indications will also change accordingly.

[0032] In addition, if there are descriptions involving "first", "second", etc. in the embodiments of the present invention, the descriptions of "first", "second", etc. are only for descriptive purposes and cannot be understood as indicating or implying their relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features limited to "first" and "second" may explicitly or implicitly include at least one of such features. In addition, if "and / or" or "and / or" appears in the full text, its meaning includes three parallel schemes. Taking "A and / or B" as an example, it includes scheme A, or scheme B, or a scheme in which A and B are satisfied at the same time. In addition, the technical solutions between the various embodiments can be combined with each other, but it must be based on the ability of ordinary technicians in this field to implement. When the combination of technical solutions is mutually contradictory or cannot be implemented, it should be deemed that such a combination of technical solutions does not exist and is not within the scope of protection required by the present invention.

[0033] Current PCB electroplating equipment typically uses a rack to carry the PCBs within the plating tank for electroplating. The rack is typically equipped with a sprocket mechanism for transmission. However, existing equipment often experiences problems with the rack's one-way sprocket becoming stuck and unable to rotate due to factors such as rust, thus affecting the stability of the PCB conveying process.

[0034] Specifically, when the hanger is pushed onto the transmission chain, the one-way sprocket of the hanger is stuck and cannot engage with the transmission chain normally. The one-way sprocket cannot rotate so that its teeth slide and abut against the rollers of the chain. The sprocket floats up and down, causing the hanger to jump intermittently, causing the hanger and the circuit board to float up and down. The intermittently jumping hanger has poor contact with the conductive track of the equipment, and the current on the circuit board fluctuates frequently, sometimes large and sometimes small, which leads to uneven plating and stratification of the circuit board, and in severe cases, the circuit board may be scrapped.

[0035] In order to solve the above problems, the utility model provides a hanger fault detection device.

[0036] See also Figures 1 to 4 In one embodiment of the present invention, the hanger fault detection device 100 includes a bracket 110, a chain 120, a hanger assembly 130 and a detection assembly 140. The chain 120 is arranged on the bracket 110. The hanger assembly 130 includes a hanger body 131 and a sprocket 132. The hanger body 131 can slide along a first direction on the bracket 110. The sprocket 132 can be unidirectionally rotatably arranged on the hanger body 131 and can be separated from or engaged with the chain 120. The detection assembly 140 is arranged on the bracket 110. When the hanger body 131 slides along the first direction on the bracket 110, it drives the chain The wheel 132 moves and engages with the chain 120. If the sprocket 132 rotates counterclockwise at this time, the gear teeth 1321 are embedded in the gaps of the chain 120 in sequence, which indicates that the sprocket 132 is working normally; if the sprocket 132 is stuck due to rust or other factors at this time, the sprocket 132 cannot rotate counterclockwise, and the gear teeth 1321 slide and abut against the roller 121 of the chain 120, causing the sprocket 132 to jump upward to a preset height. The detection component 140 detects the fault of the sprocket 132 jumping and sends an alarm signal, prompting the staff to conduct troubleshooting and maintenance in time to ensure the production quality of the circuit board and the stability of the electroplating process.

[0037] It should be noted that the detection component 140 can adopt a contact sensor 141 or a distance sensor. The contact sensor 141 can be a pressure sensor, a mechanical switch, a photoelectric switch, a capacitive contact sensor, etc. The distance sensor can adopt a laser distance sensor, an infrared sensor, a magnetic distance sensor, a capacitive distance sensor, etc. This solution can adopt one or more of the above sensors but is not limited to it, so as to accurately obtain the fault of the sprocket 132 causing the beating, and no specific limitation is made here.

[0038] In one embodiment, the hanger assembly 130 also includes a mounting seat 133, which is rotatably disposed on the hanger body 131, and a sprocket 132 is rotatably disposed on the mounting seat 133 and spaced apart from the hanger body 131. The sprocket 132 jumps to a preset height on the chain 120 due to a fault so that the mounting seat 133 rotates and triggers the detection assembly 140.

[0039] like Figures 2 to 6 As shown, in one embodiment of the present invention, the hanger assembly 130 further includes a mounting seat 133. Specifically, the mounting seat 133 is rotatably arranged on the hanger body 131, and the sprocket 132 is arranged on the mounting seat 133 and spaced apart from the hanger body 131. When the hanger body 131 drives the sprocket 132 to move along the first direction on the bracket 110 through the mounting seat 133, the sprocket 132 is overlapped on the chain 120 under the action of gravity. If the sprocket 132 is not stuck, The sprocket 132 can rotate counterclockwise, and the mounting seat 133 will not rotate relative to the hanger body 131. If the sprocket 132 is stuck due to rust or other reasons, the hanger body 131 continues to move, and the teeth 1321 of the sprocket 132 slide out of the gap formed by the two rollers 121 of the chain 120 under the action of external force. The sprocket 132 jumps upward to drive the mounting seat 133 to rotate counterclockwise. When the mounting seat 133 rotates upward a certain distance, the detection component 140 is triggered, and the detection component 140 can send an alarm signal.

[0040] It can be understood that if the sprocket 132 is directly set on the hanger body 131, the sprocket 132 will drive the entire hanger assembly 130 and the circuit board to jump upward when it is stuck. The chain 120 will be subjected to a large force and easily damaged. By providing a rotatable mounting seat 133, the resistance of the sprocket 132 to jumping upward when it is stuck can be reduced. The rotating mounting seat 133 directly triggers the detection assembly 140, which can quickly detect the fault without causing the entire hanger assembly 130 to jump, thereby ensuring the stability of the current on the circuit board.

[0041] In one embodiment, the detection assembly 140 includes a sensor 141, which is disposed above the chain 120 so that an avoidance channel is formed between the sensor 141 and the chain 120 for the mounting seat 133 and the sprocket 132 to pass through. The sprocket 132 jumps to a preset height on the chain 120 due to a fault, so that the mounting seat 133 rotates away from the chain 120 and abuts the sensor 141.

[0042] like Figure 1 、 Figure 2 and Figure 4As shown, in one embodiment of the present invention, the detection component 140 also includes a sensor 141. Specifically, a mounting plate 111 is provided on the side of the bracket 110 away from the hanger component 130, and the mounting plate 111 is extended upward. The sensor 141 is provided on the mounting plate 111 and is located above the chain 120, so that an avoidance channel is formed between the sensor 141 and the chain 120. When the hanger body 131 drives the sprocket 132 and the mounting seat 133 to move in the first direction and pass through the avoidance channel, if the sprocket 132 is stuck and the mounting seat 133 rotates counterclockwise, the sensor 141 detects that the mounting seat 133 rotates to a certain position, indicating that the sprocket 132 is stuck; if the sprocket 132 is working normally, the mounting seat 133 keeps moving horizontally and does not rotate, the sensor 141 cannot detect that the mounting seat 133 jumps up with the sprocket 132, and no alarm is issued.

[0043] In some other embodiments of the present invention, the sensor 141 can also be set on the side of the bracket 110 to form an avoidance channel, so that it can detect the jumping of the sprocket 132 due to jamming without interfering with the movement of the hanger assembly 130. There is no specific restriction on the type and installation position of the sensor 141.

[0044] In one embodiment, a probe 1411 is provided on the side of the sensor 141 facing the chain 120, and an abutment surface 133a is provided on the side of the mounting base 133 away from the chain 120. When the sprocket 132 jumps on the chain 120 due to a fault, the mounting base 133 rotates so that the abutment surface 133a slides and abuts against the probe 1411.

[0045] like Figures 3 to 6 As shown, in one embodiment of the present invention, the sensor 141 adopts a contact sensing structure. Specifically, the sensor 141 is provided with a probe 1411 extending downward toward one side of the chain 120. The upper surface of the mounting base 133 away from the chain 120 is provided with an abutting surface 133a. The bottom end of the probe 1411 is provided with a roller for rotating when it abuts the abutting surface 133a of the mounting base 133. Please refer to Figure 5 When the sprocket 132 is stuck, the sprocket 132 jumps off the chain 120 and drives the mounting base 133 to rotate counterclockwise. The mounting base 133 continues to move in the first direction, so that the abutment surface 133a slides and abuts against the roller of the probe 1411. The sensor 141 senses the change in the force on the probe 1411 and sends an alarm signal. The sensor 141 can be electrically connected to one or more external devices such as a computer, a buzzer, and a warning light. When these external devices receive the alarm signal, they can sound an alarm to remind the staff to check the fault.

[0046] Please refer to Figure 6When sprocket 132 is able to rotate counterclockwise, sprocket 132 rotates normally on chain 120, the highest point of abutment surface 133a of mounting base 133 is lower than the lowest point of probe 1411, mounting base 133 and sprocket 132 can smoothly pass through the avoidance passage, and sensor 141 will not issue an alarm signal. Sensor 141, which uses a contact structure, is simple to use, highly reliable, and relatively low in cost.

[0047] In one embodiment, the detection component 140 includes at least two sensors 141, the distance between the contact points of the probes 1411 of two adjacent sensors 141 and the abutment surface 133a is L, the pitch value of the chain 120 is P, and the L and P values ​​satisfy: L = P / 2 + n*P, where n is an integer greater than or equal to 0.

[0048] like Figure 5 and Figure 6 As shown, when the sprocket 132 is stuck and the mounting base 133 moves to the bottom of the probe 1411, the following may occur: Figure 5 The situation where the middle sprocket 132 jumps up may also occur as follows Figure 6 In the case where the middle sprocket 132 is engaged with the chain 120, if the chain 120 happens to be engaged with the sprocket 132, the probe 1411 may not be able to abut against the abutting surface 133a of the mounting seat 133, resulting in the possibility that the fault cannot be detected. To solve this problem, in one embodiment of the present invention, the number of sensors 141 is set to two, and the probes 1411 of the two sensors 141 are arranged side by side in the direction of the chain 120. The spacing value between the lowest points of the two probes 1411 is L, and the pitch between the two rollers 121 of the chain 120 is P, and L and P satisfy: L=P / 2+n*P, where n is an integer greater than or equal to 0.

[0049] It can be understood that the minimum value of L is half of the pitch P. In this case, if the sprocket 132 is stuck, then as the entire hanger assembly 130 moves, the gear teeth 1321 of the sprocket 132 intermittently jump out of the chain 120 during the movement. When the mounting seat 133 moves to the bottom of the detection assembly 140, if the sprocket 132 is in a jumped-out state, the mounting seat 133 rotates counterclockwise to raise the abutment surface 133a, then the first sensor 141 probe 1411 can detect the fault. If the sprocket 132 happens to be engaged with the chain 120 at this time, the abutment surface 133a is lower than the probe 1411 of the first sensor 141 and cannot be detected. The mounting seat 133 continues to move, and the sprocket 132 jumps out of the chain 120 again. The mounting seat 133 rotates counterclockwise to raise the abutment surface 133a so that it abuts with the probe 1411 of the second sensor 141, thereby triggering the detection. Of course, in addition to being equal to P / 2, the value of L can also be 3P / 2, 5P / 2, etc., and the number of sensors 141 can be set to more than two, without specific limitation. In summary, by providing at least two sensors 141 and setting a reasonable spacing, it can be ensured that the detection component 140 can detect the stuck fault of the sprocket 132.

[0050] In one embodiment, the mounting seat 133 is rotatably connected to the hanger body 131 via a first rotating shaft 134 , the sprocket 132 is rotatably connected to the mounting seat 133 via a second rotating shaft 135 , and the distance between the first rotating shaft 134 and the chain 120 is greater than the distance between the second rotating shaft 135 and the chain 120 .

[0051] like Figure 5 and Figure 6 As shown, in one embodiment of the present invention, a connecting piece 136 is provided at one end of the hanger body 131 near the mounting seat 133, and the mounting seat 133 is rotatably connected to the connecting piece 136 through a first rotating shaft 134, and the sprocket 132 is rotatably provided on the mounting seat 133 through a second rotating shaft 135 and is spaced apart from the connecting piece 136 to avoid interference. In some embodiments, the chain 120 moves in a first direction. Since the sprocket 132 can only rotate counterclockwise, the chain 120 can drive the hanger assembly 130 to move through the sprocket 132 when it moves. In order to prevent the mounting seat 133 from rotating counterclockwise, the height of the first rotating shaft 134 from the chain 120 is greater than the height of the second rotating shaft 135 from the chain 120, so that when the sprocket 132 is subjected to the force of the chain 120, the mounting seat 133 can stably transmit the force to the hanger body 131. If the height between the second rotating shaft 135 and the chain 120 is greater than the height between the first rotating shaft 134 and the chain 120 , the mounting seat 133 may rotate counterclockwise.

[0052] In one embodiment, the chain 120 is movably disposed on the bracket 110 along a first direction, and the movement speed of the chain 120 is a preset value, so as to drive the hanger assembly 130 to move via the sprocket 132;

[0053] Alternatively, the chain 120 is fixedly mounted on the bracket 110 .

[0054] like Figures 1 to 6 As shown, in one embodiment of the present invention, the chain 120 is an annular structure and is movably arranged on the bracket 110 along the first direction, that is, the chain 120 is used to transport the hanger assembly 130 through the sprocket 132. The moving speed of the chain 120 is usually set to a uniform speed. In actual production, it is necessary to push the hanger assembly 130 onto the bracket 110 and make the sprocket 132 engage with the chain 120. The moving speed of the hanger assembly 130 when it is forced to move onto the bracket 110 is greater than the moving speed of the chain 120, and the speed of the sprocket 132 is also greater than the speed of the chain 120. Then the sprocket 132 rotates counterclockwise, and the sensor 141 does not detect the rotation of the mounting seat 133, which indicates normal. When the hanger assembly 130 is subjected to friction during movement, causing the speed to be consistent with the speed of the chain 120, the chain 120 drives the hanger assembly 130 to move through the sprocket 132.

[0055] In some other embodiments, the chain 120 can be set as a section and fixed on the bracket 110, and the sensor 141 is installed above the chain 120. The hanger assembly 130 is forced to move to the bracket 110, and the sprocket 132 is engaged with the chain 120, which indicates normal operation. If the sprocket 132 jumps, it indicates a fault. The function of this section of chain 120 and the sensor 141 is only to detect whether the sprocket 132 is stuck, and it does not participate in transportation. After detection, the hanger assembly 130 can be transported to other chains 120 for transmission to drive the circuit board on the hanger assembly 130 to pass through the electroplating tank.

[0056] In one embodiment, the hanger fault detection device 100 further includes a guide assembly 150, a guide rail 112 extending along a first direction on the bracket 110, a slide groove 150a is formed on the guide assembly 150, and the guide assembly 150 is arranged on the hanger body 131 and is slidably connected to the guide rail 112 through the slide groove 150a.

[0057] like Figures 1 to 4 As shown, in one embodiment of the present invention, the hanger fault detection device 100 further includes a guide assembly 150 provided on the hanger body 131. Specifically, a guide rail 112 is provided on the bracket 110 extending along the first direction. The guide rail 112 is spaced apart from the chain 120 and is provided on the opposite side of the mounting plate 111. Figure 7As shown, the guide assembly 150 includes a slider 151 and a plurality of guide wheels 152 arranged on the slider 151. The slider 151 and the plurality of guide wheels 152 are enclosed to form a slide groove 150a. The shape of the slide groove 150a matches the shape of the guide rail 112. The hanger assembly 130 is slidably arranged on the guide rail 112 of the bracket 110 through the guide assembly 150. Figure 4 As can be seen, the rollers on either side of the slider 151 abut against the sides of the guide rail 112 to clamp the guide rail 112 and reduce friction. It is understood that the guide assembly 150, in sliding connection with the guide rail 112, also serves to stabilize the hanger assembly 130, ensuring that the hanger body 131 does not tilt or the sprocket 132 does not separate from the chain 120, thereby improving the stability of circuit board transportation.

[0058] In one embodiment, the hanger assembly 130 further includes a clamp 137 . The clamp 137 is disposed at one end of the hanger body 131 away from the sprocket 132 . The clamp 137 is used to clamp the circuit board.

[0059] like Figure 3 and Figure 4 As shown, in one embodiment of the present invention, a plurality of clamps 137 are extended downward from one end of the hanger body 131 away from the sprocket 132. The plurality of clamps 137 are arranged at intervals along a first direction to clamp the edge of the circuit board. The clamps 137 are energized and the electroplating cylinder below the clamps 137 contains liquid medicine. The clamps 137 drive the circuit board to move from the electroplating cylinder for electroplating. If the sprocket 132 does not jump due to being stuck, the current on the circuit board is stable, so that the plating layer on the circuit board is uniform and the electroplating quality is improved.

[0060] The present utility model also proposes a circuit board electroplating device, which includes a hanger fault detection device 100. The specific structure of the hanger fault detection device 100 refers to the above embodiment. Since the present circuit board electroplating device adopts all the technical solutions of all the above embodiments, it has at least all the beneficial effects brought by the technical solutions of the above embodiments, which will not be repeated here.

[0061] The above description is merely an exemplary embodiment of the present invention and does not limit the patent scope of the present invention. All equivalent structural transformations made using the contents of the present invention specification and drawings under the technical concept of the present invention, or direct / indirect application in other related technical fields are included in the patent protection scope of the present invention.

Claims

1. A rack fault detection device, used in circuit board electroplating equipment, characterized in that: The circuit board electroplating equipment includes an electroplating cylinder, and the hanger fault detection device includes: a bracket, wherein a chain is provided on the bracket; A hanger assembly, comprising a hanger body and a sprocket, wherein the hanger body is movably mounted on the bracket, the sprocket is unidirectionally rotatably mounted on the hanger body, the sprocket and the chain are detachable or engageable, and the hanger body is configured to drive the sprocket to move along the chain in a first direction and to drive the circuit board to move in the electroplating tank for electroplating; A detection component is provided on the bracket, and is used for sending an alarm signal when it is detected that the sprocket jumps to a preset height due to a fault.

2. The hanger fault detection device according to claim 1, characterized in that: The hanger assembly also includes a mounting seat, which is rotatably disposed on the hanger body. The sprocket is rotatably disposed on the mounting seat and is spaced apart from the hanger body. The sprocket jumps to a preset height on the chain due to a fault to rotate the mounting seat and trigger the detection assembly.

3. The hanger fault detection device according to claim 2, characterized in that: The detection component includes a sensor, which is arranged above the chain to form an avoidance channel between the sensor and the chain for the mounting seat and the sprocket to pass through. The sprocket jumps to a preset height on the chain due to a fault, so that the mounting seat rotates away from the chain and abuts the sensor.

4. The hanger fault detection device according to claim 3, characterized in that: The sensor is provided with a probe on the side facing the chain, and the mounting seat is provided with an abutment surface on the side away from the chain. When the sprocket jumps on the chain due to a fault, the mounting seat rotates to make the abutment surface slide and abut against the probe.

5. The hanger fault detection device according to claim 4, characterized in that: The detection component includes at least two sensors, the distance between the contact points of the probes of two adjacent sensors and the abutment surface is L, the pitch value of the chain is P, and the L and P values ​​satisfy: L=P / 2+n*P, where n is an integer greater than or equal to 0.

6. The hanger fault detection device according to claim 2, characterized in that: The mounting seat is rotatably connected to the hanger body via a first rotating shaft, the sprocket is rotatably connected to the mounting seat via a second rotating shaft, and the distance between the first rotating shaft and the chain is greater than the distance between the second rotating shaft and the chain.

7. The hanger fault detection device according to any one of claims 1 to 6, characterized in that: The chain is movably provided on the bracket along the first direction, and the moving speed of the chain is a preset value, so as to drive the hanger assembly to move through the sprocket; Alternatively, the chain is fixedly arranged on the bracket.

8. The hanger fault detection device according to claim 1, wherein: The hanger fault detection device also includes a guide assembly, a guide rail is provided on the bracket extending along the first direction, a slide groove is formed on the guide assembly, and the guide assembly is provided on the hanger body and is slidably connected to the guide rail through the slide groove.

9. The hanger fault detection device according to claim 1, wherein: The hanger assembly further comprises a clamp, which is provided at one end of the hanger body away from the sprocket and is used for clamping the circuit board.

10. A circuit board electroplating device, characterized in that: The device comprises a hanger fault detection device as claimed in any one of claims 1 to 9.

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