Full-automatic zinc oxide resistor disc direct current parameter testing, code spraying and sorting device

Abstract

The invention discloses a full-automatic zinc oxide resistor disc direct-current parameter testing, code spraying and sorting device which comprises a discharging conveying belt and a feeding conveying belt, a support is fixedly installed above the discharging conveying belt, a hinge seat is arranged on the top face of the support, and a swinging air cylinder and a swinging assisting air cylinder are hinged to the lower portion of the hinge seat. A suction cup assembly is installed below the conveying and swinging air cylinder, and a front bridge and a rear bridge are fixedly installed at the end, close to the discharging conveying belt, of the feeding conveying belt. According to the full-automatic zinc oxide resistor disc direct-current parameter testing, code spraying and sorting device, through the cooperative arrangement of a feeding conveying belt, a shunting strip and a proximity switch, the full-automatic zinc oxide resistor disc direct-current parameter testing, code spraying and sorting device has the effect that a resistor block can be greatly prevented from being damaged by collision; the full-automatic zinc oxide resistor disc direct-current parameter testing, code spraying and sorting device has the effect of grabbing, placing and sorting the resistor blocks through a simple structure.

Description

Technical Field

[0001] The invention relates to the technical field of zinc oxide resistor production equipment, in particular to a fully automatic zinc oxide resistor DC parameter testing, coding and sorting device. Background Art

[0002] After the zinc oxide resistor is formed, its DC parameters need to be measured and the DC parameters need to be coded on its end surface to provide information to the user, and unqualified resistors need to be picked out. In the prior art, the above operations can be completed by manual loading and unloading, but a lot of human resources are required, resulting in increased costs. Robots can also be used instead of manual grasping, but the equipment required is also very high. For this reason, conveyor belts are used to transport resistors and friction is used to drive them to automatically move back and forth to correct the position. However, since the texture of zinc oxide resistors is relatively brittle, they are easily scratched on the side, scratched on the bottom aluminum surface, dirty, and bumped on the surface corners due to mutual collisions during the correction process. After the measurement is completed, a complex material separation and grasping mechanism is required to print the measurement data on the corresponding resistor end surface. Summary of the invention

[0003] 1. Technical issues to be resolved In view of the shortcomings of the prior art, the present invention provides a fully automatic zinc oxide resistor DC parameter testing, coding and sorting device, which has the advantages of greatly preventing the resistor block from being damaged and achieving the grabbing, releasing and sorting of the resistor block through a simple structure, thus solving the problem that the resistor block is easily damaged and the sorting structure is complicated.

[0004] (II) Technical solution In order to achieve the above-mentioned purpose of greatly avoiding the resistor blocks from being damaged and realizing the grabbing, releasing and sorting of the resistor blocks through a simple structure, the present invention provides the following technical solutions: a fully automatic zinc oxide resistor DC parameter testing, coding and sorting device, including a discharging conveyor belt and a feeding conveyor belt, a bracket is fixedly installed above the discharging conveyor belt, a hinged seat is arranged on the top surface of the bracket, a swing cylinder and an auxiliary swing cylinder are hinged below the hinged seat, a suction cup assembly is installed below the swing cylinder, a front bridge and a rear bridge frame are fixedly installed near one end of the discharging conveyor belt on the feeding conveyor belt, a diverter strip is fixedly installed below the front bridge and the rear bridge frame, and the diverter strip is close to the discharging conveyor belt. A baffle is fixedly installed under the conveyor belt, a proximity switch is installed above the rear bridge frame located between the two diverter strips, a detection support plate is fixedly installed on the other side of the discharging conveyor belt close to the feeding conveyor belt, a detection slot is opened above the detection support plate, a contact plate is provided at the bottom of the detection slot, a bottom electrode is connected to the bottom of the contact plate, a rotary swing cylinder is fixedly installed below the detection support plate, and the end of the rotary swing cylinder rocker is connected to the top electrode, a resistor block is placed above the feeding conveyor belt, a partition plate is installed in the middle of the discharging conveyor belt, a correction plate is installed at the end of the discharging conveyor belt in the outflow direction, and an inkjet printer is provided above the end of the closing part of the correction plate and the partition plate.

[0005] Preferably, a connecting plate is provided at the lower end of the housing of the swing-moving cylinder, and the end of the connecting plate is hinged to the piston rod of the swing-assisting cylinder. When the swing-assisting cylinder is working, it drives the swing-moving cylinder to swing above the discharge conveyor belt.

[0006] Preferably, the suction cup assembly includes a connecting shaft, a connecting plate is connected to the bottom of the connecting shaft by screws, vacuum suction cups are evenly distributed around the connecting plate, the vacuum suction cups are connected to the vacuum pump through an air pipe, the vacuum pump provides negative pressure to the vacuum suction cups when working, the vacuum suction cups can suck up the resistor block when the negative pressure connected to the vacuum suction cups is disconnected, and the resistor block can be put down when the negative pressure connected to the vacuum suction cups is disconnected.

[0007] Preferably, there are a number of shunt bars which are parallel to the discharge conveyor belt, the distance between two adjacent shunt bars is slightly larger than the outer diameter of the resistor block, and the lower surface of the shunt bar is close to the upper surface of the feed conveyor belt but does not touch it.

[0008] Preferably, the front end of the diverter strip is a sharp corner that can separate the resistor blocks transported by the feed conveyor belt to both sides. The length of the diverter strip is about four times the diameter of the resistor block. The material of the feed conveyor belt is nylon with a very small friction coefficient.

[0009] Preferably, the rear end of the diverter strip is provided with a downwardly inclined slope, and the bottom of the baffle is fixed below the slope and is also downwardly inclined and tangent to the end of the feed conveyor belt, so that the resistor block can be smoothly transported from the feed conveyor belt to the baffle.

[0010] Preferably, the rotating shaft of the swing cylinder passes through the detection support plate and its top height is higher than the upper surface of the internal resistance block placed in the detection slot. The swing angle of the swing cylinder is about 30°. The starting point of the swing is between the two detection slots, and the end point of the swing is directly above the detection slot. During detection, the top electrode and the bottom electrode are respectively connected to the upper and lower surfaces of the resistance block and connected to the detection equipment.

[0011] Preferably, the partition plate is fixed above the discharge conveyor belt by a bracket, and the partition plate divides the space above the discharge conveyor belt evenly into two halves. The width of each half is much larger than the diameter of the resistor block. The qualified and unqualified resistor blocks can be selectively placed in different positions on the discharge conveyor belt through the swing angle of the swing cylinder.

[0012] Preferably, one end of the correction plate is fixed to the inner side of the bracket and the other end is fixed to the end of the discharge conveyor belt. The end of the correction plate is parallel to the partition plate and forms a groove with a width slightly larger than the outer diameter of the resistor block. The correction plate can send the transported resistor block to directly below the inkjet printer.

[0013] Compared with the prior art, the present invention provides a fully automatic zinc oxide resistor DC parameter testing, coding and sorting device, which has the following beneficial effects: 1. The fully automatic zinc oxide resistor DC parameter testing, coding and sorting device, through the coordinated setting of the feeding conveyor belt, the shunt bar and the proximity switch, enables the fully automatic zinc oxide resistor DC parameter testing, coding and sorting device to greatly prevent the resistor blocks from being damaged. The resistor blocks transported by the feeding conveyor belt are separated into slots by the shunt bar, which can prevent the resistor blocks from colliding with each other and thus avoiding damage. The proximity switch detects whether the resistor blocks between the shunt bars are full. If they are full, the feeding conveyor belt stops running to avoid scratches on the bottom of the resistor blocks due to excessive friction resistance and to avoid stacking and collision of the resistor blocks.

[0014] 2. The fully automatic zinc oxide resistor DC parameter testing, coding and sorting device, through the coordinated arrangement of the swing cylinder, the auxiliary swing cylinder, the suction cup assembly and the partition plate, enables the fully automatic zinc oxide resistor DC parameter testing, coding and sorting device to achieve the effect of grabbing, releasing and sorting the resistor block through a simple structure. The double cylinder combination can realize the fixed-point grabbing and releasing of the resistor block across the conveyor belt. In the process of crossing the conveyor belt, the time when the suction cup assembly is cut off can be controlled to control the position where the resistor block falls on the conveyor belt, and then it is separated and transported through the partition plate to achieve sorting, which is very convenient. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 It is a structural schematic diagram of the overall stereoscopic view of the present invention; Figure 2 It is a structural schematic diagram of the front view of the present invention; Figure 3 It is a structural schematic diagram of the left view of the present invention; Figure 4 It is a schematic diagram of the structure of the top view of the present invention; Figure 5 It is a structural schematic diagram of a first partial stereoscopic view of the present invention; Figure 6 It is a structural schematic diagram of a second partial stereoscopic view of the present invention; Figure 7 It is a structural schematic diagram of a third partial stereoscopic view of the present invention; Figure 8 It is a schematic structural diagram of the suction cup assembly of the present invention.

[0016] In the figure: 1. Discharging conveyor belt; 2. Feeding conveyor belt; 3. Bracket; 301. Articulated seat; 4. Swinging cylinder; 5. Auxiliary swing cylinder; 6. Suction cup assembly; 601. Coupling shaft; 602. Connecting plate; 603. Vacuum suction cup; 7. Front bridge; 8. Rear bridge; 9. Diverter strip; 10. Baffle; 11. Proximity switch; 12. Detection support plate; 1201. Detection slot; 13. Contact plate; 14. Bottom electrode; 15. Swinging cylinder; 16. Top electrode; 17. Resistor block; 18. Partition plate; 19. Correction plate; 20. Inkjet printer; 21. Connecting plate. DETAILED DESCRIPTION

[0017] 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 described embodiments 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 creative work are within the scope of protection of the present invention.

[0018] See also Figure 1-8A fully automatic zinc oxide resistor DC parameter testing, coding and sorting device comprises a discharging conveyor belt 1 and a feeding conveyor belt 2. A bracket 3 is fixedly installed above the discharging conveyor belt 1. A hinge seat 301 is arranged on the top surface of the bracket 3. A swing cylinder 4 and an auxiliary swing cylinder 5 are hingedly connected below the hinge seat 301. A connecting plate 21 is arranged at the lower end of the housing of the swing cylinder 4. The end of the connecting plate 21 is hinged to the piston rod of the auxiliary swing cylinder 5. When the auxiliary swing cylinder 5 is working, it drives the swing cylinder 4 to swing above the discharging conveyor belt 1. A suction cup assembly 6 is installed below the swing cylinder 4. The hinge point of the swing cylinder 4 is above the middle position of the discharging conveyor belt 1. The front and rear swing angles are the same and it can swing to the outside of the discharging conveyor belt 1 to grab the product through the suction cup assembly 6. A front bridge 7 and a rear bridge frame 8 are fixedly installed on one end of the material conveyor belt 2 near the discharge conveyor belt 1, a diverter strip 9 is fixedly installed below the front bridge 7 and the rear bridge frame 8, a baffle 10 is fixedly installed on the diverter strip 9 near the bottom of the discharge conveyor belt 1, and a proximity switch 11 is installed above the rear bridge frame 8 located between the two diverter strips 9. A detection support plate 12 is fixedly installed on the other side of the discharge conveyor belt 1 near the feed conveyor belt 2, a detection groove 1201 is opened above the detection support plate 12, a contact plate 13 is provided at the bottom of the detection groove 1201, and a bottom electrode 14 is connected to the bottom of the contact plate 13. A swing cylinder 15 is fixedly installed below the detection support plate 12, and the end of the swing rod of the swing cylinder 15 is connected to the top electrode 16. A swing cylinder 15 is placed above the feed conveyor belt 2. There is a resistor block 17, and the suction cup assembly 6 includes a connecting shaft 601. A connecting plate 602 is connected to the lower part of the connecting shaft 601 by screws. Vacuum suction cups 603 are evenly distributed around the connecting plate 602. The vacuum suction cups 603 are connected to the vacuum pump through an air pipe. When the vacuum pump is working, negative pressure is provided to the vacuum suction cups 603. When the vacuum suction cups 603 are connected to negative pressure, the resistor block 17 can be sucked up. When the negative pressure connected to the vacuum suction cups 603 is disconnected, the resistor block 17 can be put down. The position of the resistor block 17 turning down can be controlled by controlling the time when the negative pressure of the vacuum suction cups 603 is disconnected. The number of diverter strips 9 is several and they are parallel to the discharge conveyor belt 1. The distance between two adjacent diverter strips 9 is slightly larger than the outer diameter of the resistor block 17. The lower surface of the diverter strip 9 is close to the upper surface of the feed conveyor belt 2 but not The contact can guide the resistance block 17 for transportation without hindering the movement of the discharge conveyor belt 1. The front end of the diverter strip 9 is a sharp angle, which can separate the resistance block 17 transported by the feed conveyor belt 2 to both sides. The length of the diverter strip 9 is about four times the diameter of the resistance block 17. The material of the belt of the feed conveyor belt 2 is nylon with a very small friction coefficient. The rear end of the diverter strip 9 is provided with a downward inclined surface. The bottom of the baffle 10 is fixed below the inclined surface and is also inclined downward and tangent to the end of the feed conveyor belt 2, so that the resistance block 17 can be smoothly transported from the feed conveyor belt 2 to the baffle 10. The rotating shaft of the swing cylinder 15 passes through the detection support plate 12, and its top height is higher than the upper surface of the internal resistance block 17 placed in the detection slot 1201. The swing angle of the swing cylinder 15 is about 30°.The starting point of the pendulum is between the two detection slots 1201, and the end point of the pendulum is directly above the detection slot 1201. During detection, the top electrode 16 and the bottom electrode 14 are respectively connected to the upper and lower surfaces of the resistor block 17 and connected to the detection equipment. A partition plate 18 is installed in the middle of the discharge conveyor belt 1, and a correction plate 19 is installed at the end of the discharge conveyor belt 1 in the outflow direction. A coder 20 is arranged above the closing part of the correction plate 19 and the partition plate 18. The partition plate 18 is fixed above the discharge conveyor belt 1 by the bracket 3. The partition plate 18 divides the space above the discharge conveyor belt 1 into two halves evenly. The width of each half is much larger than the diameter of the resistor block 17. The qualified and unqualified resistor blocks 17 can be selectively placed at different positions on the discharge conveyor belt 1 by the swing angle of the swing cylinder 4. One end of the correction plate 19 is fixed to the inner side of the bracket 3 and the other end is fixed to the end of the discharge conveyor belt 1. The end of the correction plate 19 is parallel to the partition plate 18 and forms a groove with a width slightly larger than the outer diameter of the resistor block 17. The correction plate 19 can send the transported resistor block 17 to the bottom of the inkjet printer 20, and the inkjet printer 20 can spray the test results on the end surface of the resistor block 17.

[0019] When in use, first put a certain number of resistor blocks 17 on the feed conveyor 2. When the feed conveyor 2 is working, the resistor blocks 17 are transported to one end of the shunt strip 9. The resistor blocks 17 flow into the two shunt strips 9 under the guidance of the sharp corners at the front end of the shunt strip 9. The front resistor block 17 will fall into the baffle 10. At this time, the position of the resistor block 17 in the baffle 10 is the position where the suction cup assembly 6 grabs. Since the shunt strip 9 is relatively short, only four or five resistor blocks 17 can be fed in. When the slot between a shunt strip 9 is filled with resistor blocks 17, since the resistor blocks 17 are round, it is easier to translate by force. Then other resistor blocks 17 will slide to the side under the friction of the discharge conveyor 1 and enter other slots. There are resistor blocks 17 under the proximity switch 11 When a signal is triggered, the discharging conveyor belt 1 starts running and all the proximity switches 11 have stable signals, which means that all the shunt strips 9 are filled with resistor blocks 17. At this time, the discharging conveyor belt 1 stops running. In this process, since the shunt strips 9 are relatively short and easy to be filled, not much thrust will be generated, thereby preventing the resistor blocks 17 from rolling due to friction and thrust, thereby achieving rapid material distribution and fixation and greatly reducing damage. While the discharging conveyor belt 1 is feeding the material into the baffle 10, the auxiliary swing cylinder 5 drives the swing cylinder 4 to swing above the discharging conveyor belt 1 through the telescopic piston rod through the connection of the connecting plate 21, wherein the swing starting point of the swing cylinder 4 is above the baffle 10. At this time, the piston rod of the swing cylinder 4 can be driven when it extends downward. The suction cup assembly 6 moves downward and contacts the resistor block 17 on the baffle 10. At this time, the vacuum suction cup 603 only needs to connect the vacuum pump to suck the resistor block 17. After sucking the resistor block 17, the piston rod of the swing cylinder 4 retracts to grab the resistor block 17 from the baffle 10. The piston rod of the auxiliary swing cylinder 5 is further pushed out to push the swing cylinder 4 to swing to the side of the detection support plate 12. The end point of the swing of the swing cylinder 4 is just above the detection groove 1201. At this time, the piston rod of the swing cylinder 4 extends downward to send the grabbed resistor block 17 to the detection groove 1201. The vacuum suction cup 603 is further disconnected from the vacuum pump and then the piston rod of the swing cylinder 4 is retracted upward. The swing cylinder 15 is further operated to press the top electrode 16 onto the resistor block 17. , at this time, the upper and lower surfaces of the resistor block 17 are connected to the detection device through the top electrode 16 and the bottom electrode 14 respectively, and the detection device further detects the data of the resistor block 17 according to the detection step. If the detection result is qualified, the detection result is sent to the inkjet printer 20, and at the same time, the swing cylinder 4 works to grab the qualified resistor block 17, and the auxiliary swing cylinder 5 drives the swing cylinder 4 to swing to the starting point. In this process, the time for the vacuum suction cup 603 to be disconnected from the vacuum pump is set according to the swing speed of the swing cylinder 4. For example, it takes 3 seconds for the swing cylinder 4 to swing from the end point to the starting point, then the vacuum suction cup 603 is disconnected from the vacuum pump after the swing cylinder 4 swings for 1 second, and the qualified resistor block 17 will fall to the side of the discharge conveyor belt 1 close to the detection support plate 12.Then the discharging conveyor belt 1 works to transport the qualified resistor blocks 17 to the bottom of the inkjet printer 20 for coding and marking. During this process, other qualified resistor blocks 17 cannot be placed on the discharging conveyor belt 1 to avoid confusion. Since it only takes a short time for the discharging conveyor belt 1 to transport the resistor blocks 17 to the bottom of the inkjet printer 20 for coding and the detection time of the resistor blocks 17 is relatively long, even if there are multiple sets of swing cylinders 4 working at the same time, they will still have time to transport the qualified resistor blocks 17 one by one. If the detection time is also short and there is time for transportation, the time when the qualified resistor blocks 17 fall into the discharging conveyor belt 1 can be calculated to queue for coding. If the detection result is unqualified, then the swing cylinders 4 will The vacuum suction cup 603 is disconnected from the vacuum pump only after the cylinder 4 swings for 2 seconds. At this time, the unqualified resistor block 17 will fall to the side close to the baffle 10. When the swing cylinder 4 returns to the starting point, it will start to grab the next resistor block 17. If the vacuum suction cup 603 does not grab the resistor block 17, the discharge conveyor belt 1 will start the feeding program and start feeding into the baffle 10 until all the proximity switches 11 are triggered. In order to avoid wasting time when the discharge conveyor belt 1 starts the feeding program during the detection process, the discharge conveyor belt 1 needs to transport the suction cup assembly 6 a short distance forward each time it grabs a resistor block 17 so that the resistor block 17 can be replenished into the baffle 10 in time.

[0020] In summary, the fully automatic zinc oxide resistor DC parameter testing, coding and sorting device separates the resistor blocks 17 transported by the feed conveyor belt 2 into individual slots through the shunt strips 9, which can prevent the resistor blocks 17 from colliding with each other and thus avoiding damage. The proximity switch 11 detects whether the resistor blocks 17 between the shunt strips 9 are full. If the feed conveyor belt 2 is full, it stops running to avoid scratches on the bottom of the resistor block 17 due to excessive friction resistance and to avoid stacking and collision of the resistor blocks 17. The double-cylinder combination can realize the fixed-point grasping and releasing of the resistor block 17 across the conveyor belt. In the process of crossing the conveyor belt, the time when the suction cup assembly 6 is cut off can be controlled to control the position of the resistor block 17 on the conveyor belt, and then the resistor block 17 is separated and transported through the partition plate 18 to achieve sorting, which is very convenient.

[0021] It should be noted that, in this article, relational terms such as first and second, etc. are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Moreover, the terms "include", "comprise" or any other variants thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, article or device. In the absence of further restrictions, the elements defined by the statement "comprise one" do not exclude the existence of other identical elements in the process, method, article or device including the elements.

[0022] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A fully automatic zinc oxide resistor DC parameter testing, coding and sorting device, comprising a discharging conveyor belt (1) and a feeding conveyor belt (2), characterized in that: A bracket (3) is fixedly installed above the discharge conveyor belt (1), a hinge seat (301) is provided on the top surface of the bracket (3), a swing cylinder (4) and a swing-assisting cylinder (5) are hingedly connected below the hinge seat (301), a suction cup assembly (6) is installed below the swing cylinder (4), a front bridge (7) and a rear bridge frame (8) are fixedly installed at one end of the feed conveyor belt (2) close to the discharge conveyor belt (1), a diverter strip (9) is fixedly installed below the front bridge (7) and the rear bridge frame (8), a baffle (10) is fixedly installed below the diverter strip (9) close to the discharge conveyor belt (1), a proximity switch (11) is installed above the rear bridge frame (8) located between the two diverter strips (9), and the discharge conveyor belt (1) is close to the feed conveyor belt (2). A detection support plate (12) is fixedly installed on the other side, a detection slot (1201) is opened above the detection support plate (12), a contact plate (13) is arranged at the bottom of the detection slot (1201), a bottom electrode (14) is connected to the bottom of the contact plate (13), a rotary swing cylinder (15) is fixedly installed below the detection support plate (12), the end of the swing rod of the rotary swing cylinder (15) is connected to the top electrode (16), a resistor block (17) is placed above the feed conveyor belt (2), a partition plate (18) is installed in the middle of the discharge conveyor belt (1), a correction plate (19) is installed at the end of the discharge conveyor belt (1) in the outflow direction, and a coder (20) is arranged above the end of the correction plate (19) and the partition plate (18).

2. The fully automatic zinc oxide resistor DC parameter testing, coding and sorting device according to claim 1 is characterized in that: A connecting plate (21) is provided at the lower end of the housing of the swing-moving cylinder (4), and the end of the connecting plate (21) is hingedly connected to the piston rod of the swing-assisting cylinder (5). When the swing-assisting cylinder (5) is in operation, it drives the swing-moving cylinder (4) to swing above the discharge conveyor belt (1).

3. The fully automatic zinc oxide resistor DC parameter testing, coding and sorting device according to claim 1 is characterized in that: The suction cup assembly (6) comprises a connecting shaft (601), a connecting plate (602) is connected to the bottom of the connecting shaft (601) by screws, vacuum suction cups (603) are evenly distributed around the connecting plate (602), the vacuum suction cups (603) are connected to a vacuum pump via an air pipe, and the vacuum pump provides negative pressure to the vacuum suction cups (603) when working. When the vacuum suction cups (603) are connected to the negative pressure, the resistance block (17) can be sucked up, and when the negative pressure connected to the vacuum suction cups (603) is disconnected, the resistance block (17) can be put down.

4. The fully automatic zinc oxide resistor DC parameter testing, coding and sorting device according to claim 1 is characterized in that: There are a number of diverter strips (9) which are parallel to the discharge conveyor belt (1), the distance between two adjacent diverter strips (9) is slightly larger than the outer diameter of the resistor block (17), and the lower surface of the diverter strip (9) is close to the upper surface of the feed conveyor belt (2) but does not touch it.

5. The fully automatic zinc oxide resistor DC parameter testing, coding and sorting device according to claim 1 is characterized in that: The front end of the diverter strip (9) is a sharp corner and can separate the resistor block (17) transported by the feed conveyor belt (2) to two sides. The length of the diverter strip (9) is about four times the diameter of the resistor block (17). The material of the feed conveyor belt (2) is nylon with a very small friction coefficient.

6. The fully automatic zinc oxide resistor DC parameter testing, coding and sorting device according to claim 1 is characterized in that: The rear end of the diverter strip (9) is provided with a downwardly inclined surface, and the bottom of the baffle (10) is fixed below the inclined surface and is also downwardly inclined and tangent to the end of the feed conveyor belt (2), so that the resistor block (17) can be smoothly transported from the feed conveyor belt (2) to the baffle (10).

7. The fully automatic zinc oxide resistor DC parameter testing, coding and sorting device according to claim 1 is characterized in that: The rotating shaft of the oscillating cylinder (15) passes through the detection support plate (12) and the top height thereof is higher than the upper surface of the internal resistance block (17) placed in the detection groove (1201). The oscillating angle of the oscillating cylinder (15) is approximately 30°. The starting point of the oscillation is between the two detection grooves (1201) and the end point of the oscillation is directly above the detection groove (1201). During detection, the top electrode (16) and the bottom electrode (14) are respectively connected to the upper and lower surfaces of the resistance block (17) and connected to the detection equipment.

8. The fully automatic zinc oxide resistor DC parameter testing, coding and sorting device according to claim 1 is characterized in that: The partition plate (18) is fixed above the discharge conveyor belt (1) through a bracket (3). The partition plate (18) evenly divides the space above the discharge conveyor belt (1) into two halves. The width of each half is much larger than the diameter of the resistor block (17). By adjusting the swing angle of the swing cylinder (4), the qualified and unqualified resistor blocks (17) can be selectively placed at different positions on the discharge conveyor belt (1).

9. The fully automatic zinc oxide resistor DC parameter testing, coding and sorting device according to claim 1 is characterized in that: One end of the correction plate (19) is fixed to the inner side of the bracket (3) and the other end is fixed to the end of the discharge conveyor belt (1). The end of the correction plate (19) is parallel to the partition plate (18) and forms a groove with a width slightly larger than the outer diameter of the resistor block (17). The correction plate (19) can deliver the transported resistor block (17) to the bottom of the inkjet printer (20).

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