CN115535340A - Resistance packaging machine - Google Patents

Abstract

The invention relates to a resistance packaging machine which comprises a rack, wherein a resistance feeding mechanism, a packaging tape feeding mechanism and a heat sealing mechanism are arranged on the rack, the resistance feeding mechanism comprises a feeding channel, a rotary table and a motor for driving the rotary table to rotate, a plurality of resistance accommodating grooves are formed in the rotary table at intervals along the circumferential direction of the rotary table, a feeding unit and a discharging unit are arranged on the rack around the rotary table at intervals, a resistance detection mechanism and an unqualified resistance recovery mechanism are further arranged on the rack, the feeding unit, the resistance detection mechanism, the unqualified resistance recovery mechanism and the discharging unit are sequentially arranged at intervals along the circumferential direction of the rotary table, and an infrared sensor is arranged on the rack. By adopting the technical scheme, the invention provides the resistance packaging machine which is provided with the detection mechanism, so that the resistance value of the resistance can be detected in the resistance conveying process, and the resistance lower than the set resistance value is eliminated, so that the qualified rate of the packaged resistance is high.

Description

A resistance packaging machine

technical field

The invention relates to the technical field of resistance processing, in particular to a resistance packaging machine.

Background technique

Resistor packaging machine is a device for spot welding packaging of plate resistors. Existing resistance packing machine is to adopt packing belt as raw material to make into bag, thereby the machinery that small parts such as resistance or LED are packed.

The applicant has previously applied for a Chinese utility model patent, the authorized announcement number is: CN212556979U, the patent name is a resistance packaging machine, which includes a frame, and the frame is equipped with a feeding device, a suction device, a first clamping device, a first detection device, a first recovery device, a second clamping device, a second detection device, a second recovery device, a feeding device, a film feeding device and a heat sealing device. But above-mentioned packaging machine, it detects resistance by first detecting device and second detecting device, detects whether the resistance is qualified or not, and rejects the detected unqualified ones, although the above-mentioned resistance packaging machine is also provided with detecting device, but Its detection device uses a visual sensor, which cannot detect the resistance value of the resistor, so that the resistor with a lower than the set resistance value will also be packaged, resulting in uneven product quality.

Contents of the invention

Purpose of the present invention: In order to overcome the defects of the prior art, the present invention provides a resistance packaging machine, which is equipped with a detection mechanism, which can detect the resistance value of the resistance during the resistance delivery process, and detect the resistance value below the set resistance. The value of the resistance is eliminated, so that the qualified rate of the resistance after packaging is high.

The technical solution of the present invention: a resistance packaging machine, including a frame, the frame is provided with a resistance feeding mechanism, a packaging belt feeding mechanism and a heat sealing mechanism, and the resistance feeding mechanism includes a feeding channel, a turntable And the motor that drives the turntable to rotate, the turntable is provided with a number of resistance accommodating grooves at intervals along its circumference, the frame is provided with a feeding unit and a discharge unit around the turntable, and the frame is fixed with An annular support platform, the annular support platform is located below the turntable to support the resistors in each resistance storage tank, the first gap is provided on the annular support platform, and the discharge unit includes a discharge track and The resistance ejection mechanism, the discharge track is arranged below the first notch, the ejection mechanism is located above the first notch, and the ejection mechanism is rotated in one of the resistance accommodating grooves of the turntable to correspond to the first notch The resistance located in the resistance holding tank can be ejected onto the discharge track through the first gap, the frame is provided with a material belt track on the rear side of the discharge track, and the packaging belt feeding mechanism includes a The first packaging belt is conveyed to the first feeding tray on the discharge track and the second feeding tray used to deliver the second packaging belt to the material belt track. The heat sealing mechanism includes a heat sealing head and drives the heat sealing head to the material belt. The first driving part moving in the direction of the track, the frame is also equipped with a resistance detection mechanism and an unqualified resistance recovery mechanism, and the feeding unit, resistance detection mechanism, unqualified resistance recovery mechanism and the discharge unit are The circumferential direction is set at intervals in turn, and the resistance detection mechanism includes copper sheets I, copper sheets II, a pressure piece arranged side by side, and a pressure gauge electrically connected to the two copper pieces. The two ends of the resistance in the storage tank are set against each other, and the two copper sheets are in contact with the two ends of the resistance in the resistance storage tank to realize the voltage detection of the resistance. The unqualified resistance recovery mechanism includes a blocking member and a driving blocking member to move The second drive member is provided with a second notch on the annular support platform, and the shutter is movably arranged above the second notch so as to cover the second notch or expose the second notch. The frame is located on the second notch. There is an unqualified resistance recovery area below the gap.

Using the above technical scheme, the feeding channel feeds the resistors one by one into the resistor accommodating tank, the motor works, and rotates with the turntable. When the resistor passes through the resistance detection mechanism, the two ends of the resistor just come into contact with the two copper sheets to realize the resistance value. Then pass the detection value to the controller, the controller makes a judgment, whether it reaches the set value, the resistance that reaches the set value is qualified resistance, and the resistance that does not reach the set value is unqualified resistance. After detection, the resistance is on the turntable The transmission continues under the rotation of the unqualified recycling mechanism. When passing the unqualified recycling mechanism, the second driving part does not move, and the qualified resistors continue to move forward. Fall into the first packaging material belt in the discharge track, the first packaging material belt is conveyed to the direction of the material belt track, the second packaging material belt covers the first packaging material belt, and is heat-sealed by the heat sealing head to complete the packaging , when the unqualified resistors reach the unqualified recycling mechanism, the controller will control the second driving part to work, drive the blocking part to move, and expose the second gap, and the unqualified resistors in the resistor accommodating tank will fall downwards. Drop it to the unqualified resistor recycling area for recycling, so that the resistors with qualified resistance values and the resistors with unqualified resistance values can be automatically distinguished, so that the resistors after packaging are all resistors with qualified resistance values, and the product qualification rate is high.

A further setting of the present invention: the resistance detection mechanism also includes a tension spring, the frame is provided with a fixed seat, and the fixed seat is provided with a third driver, and the output shaft of the third driver is A rotating shaft is provided, the pressing member is connected with the rotating shaft, one end of the tension spring is arranged on the fixing seat, and the other end is arranged on the rotating shaft.

With the above-mentioned further setting, the setting of the tension spring makes the pressing member always press the copper sheet on the turntable, so that the copper sheet is in contact with the two ends of the resistance to be detected, and the resistance value detection is performed to prevent the copper sheet from being in bad contact with the resistor, which will affect the resistance. Test results.

Further setting of the present invention: a third notch is also provided on the annular support platform, the third notch is arranged between the feeding unit and the discharging unit, and the third notch is opposite to the second notch, so A resistance recovery area is provided on the frame below the third gap.

With the above further setting, when the infrared sensor detects that the unqualified resistor does not fall from the second gap, but continues to move towards the qualified first gap driven by the turntable, the infrared sensor will send a signal to the The controller, the controller receives the signal, controls the feeding unit and the heat-sealing mechanism to stop working, the second driving part drives the blocking part to block the second gap, and then the motor reverses to drive the turntable to rotate counterclockwise, and each resistor is accommodated The resistors in the tank fall from the third gap into the resistor recovery area. After all the resistors on the turntable are recovered, continue to start the feeding unit, and the motor rotates forward, driving the turntable to rotate clockwise to continue the transportation and detection of resistors. Resistors in the recycling area can be loaded again through the feeding channel for packaging, and the second gap is blocked by the blocking member, which prevents the resistors from falling from the second gap, causing the qualified resistors on the turntable to fall into the unqualified resistor recycling area , resulting in the need to re-screen from the unqualified resistor recovery area, increasing the workload.

The present invention is further set up: the frame is also provided with a mounting seat, the mounting seat is located directly above the material belt track, the heat sealing head is installed on the mounting seat, and the heat sealing head and the mounting seat constitute The connection is detachable, and the installation base is provided with a heating element capable of heating the heat sealing head.

With the above-mentioned further configuration, the heat-sealing head and the installation seat form a detachable connection, and the heat-sealing head can be removed and replaced to match bags of different sizes.

Further setting of the present invention: the feeding unit includes a feeding seat with a feeding trough, and a conveyor belt for delivering the resistance to the resistance holding tank is arranged in the feeding trough, and the feeding seat It is also provided with a retaining pin for preventing the resistance on the conveyor belt from moving forward and a fourth driver for driving the retaining pin up and down. The retaining pins are provided with two groups, which are respectively arranged at intervals along the front and rear directions to accommodate a resistor. There are two sets of the fourth driving member for the first and second retaining pins in the accommodation space, and each fourth driving member is respectively connected with the corresponding retaining pin for driving it to slide in and out of the feeding chute.

With the above-mentioned further setting, the motor drives the turntable to rotate. When a resistance storage tank on the turntable is transferred to the feeding unit, the resistance feeds. The needle slides out of the feeding trough, and the resistor is put into the feeding trough. At this time, the resistor at the front is not blocked by the second needle stop and is transported to the first needle stop through the conveyor belt, and the driving part drives the first stop needle upward. Slide out of the feeding trough, the driving part works to drive the second stop pin to extend downwards into the feeding trough, and the resistance in the accommodation space is transported to the resistance accommodating tank on the turntable corresponding to the feeding seat through the conveyor belt , and the remaining resistance is blocked by the second retaining pin to realize resistance feeding.

In a further setting of the present invention: the ejection mechanism includes a base, an electromagnet arranged on the base and a suction nozzle, the suction nozzle is driven up and down by the electromagnet, the suction nozzle is arranged above the turntable, and the suction nozzle An air pipe is connected to one end, and a spring is pressed between the base and the suction nozzle.

With the above-mentioned further setting, when the resistor accommodating groove corresponds to the first gap, the suction nozzle absorbs the resistor, and at the same time, the electromagnet pushes the suction nozzle to eject the resistor to the packaging belt through the first gap for packaging, making the resistor discharge more convenient. fast.

A further setting of the present invention is: the fixed seat is rotated to be provided with a mounting piece, and a plurality of through holes are arranged on the mounting piece, and one end of the tension spring is hooked in one of the through holes, and the described mounting piece is locked The nut is installed on the fixing seat.

With the further arrangement above, the installation of the extension spring is facilitated, and at the same time, the installation position of the extension spring can be adjusted according to the usage requirements.

Further setting of the present invention: a first inductor and a second inductor are provided on the inner wall of the feeding trough, and the first inductor can make one of the fourth drive One piece works to drive the first stop pin to slide upwards out of the feeding trough, and the second sensor can make another fourth drive work to drive the second stop pin to extend downwards into the feed slot when sensing the first stop pin to slide upwards. In the trough.

With the above-mentioned further setting, the driving part drives the stop pin to slide up and down through the sensor, which is more accurate and avoids the situation that two resistors enter the same resistor accommodating slot.

Description of drawings

Fig. 1 is the overall structure schematic diagram of the specific embodiment of the present invention;

Fig. 2 is the schematic diagram of the specific embodiment of the present invention;

Fig. 3 is the schematic diagram of the turntable of the specific embodiment of the present invention;

Fig. 4 is a schematic diagram of each gap in a specific embodiment of the present invention;

5 is a schematic diagram of a heat-sealing mechanism of a specific embodiment of the present invention;

Fig. 6 is the schematic diagram of the feeding seat of the specific embodiment of the present invention;

Fig. 7 is a schematic diagram of a needle retainer according to a specific embodiment of the present invention;

Fig. 8 is a schematic diagram of a mounting seat according to a specific embodiment of the present invention;

Fig. 9 is a schematic diagram of an ejection mechanism according to a specific embodiment of the present invention;

FIG. 10 is a cross-sectional view of FIG. 9 .

detailed description

The technical solution in this embodiment will be clearly and completely described below in conjunction with the accompanying drawings. Apparently, the described embodiment is only a part of the embodiments of the present invention, rather than all the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by persons of ordinary skill in the art without creative efforts fall within the protection scope of the present invention.

It should be noted that all directional indications (such as up, down, front, back...) in the description of the present invention are only used to explain the relative positional relationship between the components in a certain posture (as shown in the accompanying drawings) , sports conditions, etc., if the specific posture changes, the directional indication also changes accordingly.

In addition, in the present invention, descriptions such as "first", "second" and so on are used for description purposes only, and should not be understood as indicating or implying their relative importance or implicitly indicating the quantity of indicated technical features. In the description of the present invention, "several" means at least two, such as two, three, etc., unless otherwise specifically defined.

In addition, the technical solutions of the various embodiments of the present invention can be combined with each other, but it must be based on the realization of those skilled in the art. When the combination of technical solutions is contradictory or cannot be realized, it should be considered that the combination of technical solutions is not Exist, also not within the scope of protection required by the present invention.

As shown in Figure 1-10, a resistance packaging machine includes a frame 1, on which a resistance feeding mechanism 2, a packaging belt feeding mechanism 3 and a heat sealing mechanism 4 are arranged, and the resistance feeding mechanism 4 The mechanism 2 includes a feeding channel 21, a turntable 22, and a motor that drives the turntable 22 to rotate. The turntable 22 is provided with a plurality of resistance accommodation grooves 221 at intervals along its circumference, and the frame 1 is arranged around the turntable 22 in the circumferential direction. There is a feeding unit 5 and a discharging unit 6, and the frame 1 is fixedly provided with an annular support platform 11, and the annular support platform 11 is located under the turntable 22 for supporting the resistors in each resistor accommodating groove 221. A first notch 111 is provided on the annular support platform 11, and the discharge unit 6 includes a discharge track 61 and a resistance ejection mechanism 62. The discharge track 61 is arranged below the first notch 111, and the ejection mechanism 62 is located above the first notch 111, and the ejection mechanism 62 can move the resistor located in the resistor accommodating slot 221 through the first notch when one of the resistor accommodating slots 221 of the turntable 22 is rotated to correspond to the first notch 111. 111 is ejected onto the discharge track 61, the frame 1 is provided with a material belt track 12 on the rear side of the discharge track 61, and the packaging belt feeding mechanism 3 includes a belt for transporting the first packaging belt to the discharge track 61. The first feeding tray 31 on the track 61 and the second feeding tray 32 used to transport the second packaging tape to the material belt track 12, the heat sealing mechanism 4 includes a heat sealing head 41 and drives the heat sealing head 41 to the material belt track The first driver 42 that moves in the direction of 12, the first driver 42 can be a cylinder, an electric cylinder or a motor, etc., the frame 1 is also provided with a resistance detection mechanism 7 and a defective resistance recovery mechanism 8, the described The feeding unit 5, the resistance detection mechanism 7, the unqualified resistance recovery mechanism 8 and the discharge unit 5 are sequentially arranged at intervals along the circumference of the turntable 22, and arranged sequentially along the rotation direction of the turntable 22. The resistance detection mechanism 7 includes copper wires arranged side by side. Sheet I71, copper sheet II72, pressure member 73 and the pressure gauge 74 electrically connected with the two copper sheets, the two copper sheets are always in contact with the two ends of the resistance in the resistance accommodating tank through the pressure member 73. The pressing part 73 is set by a pressing plate or a pressing block, and the two copper sheets are in contact with the two ends of the resistance in the resistance accommodating groove 221 to realize the voltage detection of the resistance. The unqualified resistance recovery mechanism 8 includes a blocking part 81 and a driving The second driving part 82 for the movement of the blocking part 81, the blocking part 81 is set by a blocking plate, the second driving part 82 can be a cylinder, an electric cylinder or a motor, etc., preferably a cylinder is used, so that the blocking part 81 can be driven more quickly movement, the annular support platform 11 is provided with a second notch 112, and the blocking member 81 is movably arranged above the second notch 112 so as to cover the second notch 112 or expose the second notch 112. On the frame 1 Below the second notch 112, there is an unqualified resistor recovery area, and a controller 100 is also installed on the frame 1, and the motor and each driver are electrically connected to the controller, and the feeding channel 21 sends the resistors one by one to the resistor. In the accommodating groove 221, the motor works, with As the turntable 22 rotates, when the resistance passes through the resistance detection mechanism 7, the two ends of the resistance just come into contact with the two copper sheets to realize the detection of the resistance value, and then transmit the detection value to the controller 100, and the controller 100 makes a judgment whether it reaches The set value, the one that reaches the set value is qualified resistance, and the one that does not reach the set value is unqualified resistance. After the detection, the resistance continues to be transmitted under the rotation of the turntable 22. When passing through the unqualified recovery mechanism 8, the second drive part 82 does not move, and qualified resistors continue to move forward. When reaching the discharge unit, the resistor ejection mechanism 62 will push the resistors toward the direction of the discharge track 61, so that the qualified resistors fall onto the first packaging material belt in the discharge track 61 , the first packaging material belt is conveyed to the direction of the material belt track 12, the second packaging material belt is covered on the first packaging material belt, and is heat-sealed by the heat sealing head 41 to complete the packaging, and the unqualified resistors reach the unqualified recycling mechanism 8 At this time, the controller 100 will control the second driving part 82 to work, drive the blocking part 81 to move, and expose the second gap 112, and the unqualified resistors in the resistor accommodating groove 221 will fall downwards, and fall to the unqualified resistors. Recycling is carried out in the recycling area, so that resistors with qualified resistance values and resistors with unqualified resistance values can be automatically distinguished, so that the resistors after packaging are all resistors with qualified resistance values, and the product qualification rate is high.

The resistance detection mechanism 7 also includes a tension spring 75, the frame 1 is provided with a fixed seat 13, the fixed seat 13 is provided with a third driver, and the output shaft of the third driver is provided with a There is a rotating shaft, the pressing member 73 is connected with the rotating shaft, one end of the extension spring 75 is arranged on the fixed seat 13, and the other end is arranged on the rotating shaft, the setting of the extension spring 75 makes the pressing member 73 always hold the copper sheet It is pressed on the turntable 22 so that the copper sheet is in contact with the two ends of the resistance to be detected to detect the resistance value, so as to prevent poor contact between the copper sheet and the resistance and affect the detection result. The fixed seat 13 is rotated with a mounting piece 131, and the mounting piece 131 is provided with a plurality of through holes 1311, and one end of the tension spring 75 is hooked in one of the through holes 1311, and the mounting piece 131 is locked. The nut is installed on the fixed seat 13, which is convenient for the installation of the extension spring, and the installation position of the extension spring can be adjusted according to the usage requirements.

A third notch 113 is also provided on the annular support platform 11, and the third notch 113 is arranged between the feeding unit 5 and the discharging unit 6, and the third notch 113 is opposite to the second notch 112. The frame 1 is located below the third notch 113 and is provided with a resistor recovery area. When the infrared sensor detects that the unqualified resistors do not fall from the second notch 112, they continue to move to the qualified first notch under the drive of the turntable 22. When moving in the direction of the notch 111, the infrared sensor will send a signal to the controller 100, the controller 100 receives the signal, controls the feeding unit 5 and the heat-sealing mechanism 4 to stop working, and the second driving part 82 drives the shutter 81 to move, and the second The notch 112 is blocked, and then the motor reverses to drive the turntable 22 to rotate counterclockwise, and the resistors in each resistor accommodating groove 221 are dropped from the third notch 113 into the resistor recovery area. After all the resistors on the turntable 22 are recovered, Continue to start the feeding unit 5 again, the motor rotates forward, drives the turntable 22 to rotate clockwise, and continues the transportation and detection of the resistance. The resistance in the recycling area can be loaded through the feeding channel again for packaging. 112 blocks, preventing the resistance from falling from the second gap 112, causing the qualified resistance on the turntable 22 to fall into the unqualified resistance recovery area, resulting in the need to re-screen from the unqualified resistance recovery area, increasing the workload.

The frame 1 is also provided with a mounting seat 14, the mounting seat 14 is located directly above the strip track 12, the heat sealing head 41 is mounted on the mounting seat 14, the output shaft of the first driving member 42 is connected to the The mounting seat 14 is linked so as to drive the heat sealing head 41 to move in the direction of the material belt track 12 or to move away from the direction of the material belt track 12. The heat sealing head 41 and the mounting seat 14 form a detachable connection. The heating element 141 for heating the sealing head 41, the heat sealing head 41 and the installation seat 14 form a detachable connection, the heat sealing head can be removed and replaced to match bags of different sizes.

The feed unit 5 includes a feed seat 51 with a feed trough, in which a conveyor belt for delivering the resistors to the resistor accommodating tank 211 is provided, and the feed seat 51 is also provided with a conveyor belt for The retaining pin 511 that prevents the resistance on the conveyor belt from moving forward and the fourth driving member 512 that drives the retaining pin 511 up and down, the retaining pin 511 is provided with two groups, which are respectively arranged at intervals along the front and rear directions to accommodate a resistor The first retaining pin 513 and the second retaining pin 514 of the accommodation space, the fourth driving member is also provided with two groups, and each fourth driving member is respectively connected with the corresponding retaining pin for driving it to slide in and out of the feeding chute , the motor drives the turntable 22 to rotate, and when a resistance accommodating groove 211 on the turntable 22 is transferred to the feeding unit 5, the resistance is fed. 514 slides out of the feeding trough, and the resistor is put into the feeding trough. At this time, the resistor at the front is not blocked by the second stop pin 514 and transported to the first stop pin 513 through the conveyor belt, and the driving part works to drive the first stop The needle 513 slides upwards out of the feeding trough, and the driving part works to drive the second stop pin 514 to extend downwards into the feeding trough, and the resistance in the accommodation space is transported to the turntable 22 corresponding to the feeding seat 51 through the conveyor belt In the resistor accommodating groove 221, the remaining resistors are blocked by the second blocking pin 514 to realize resistor feeding. A first inductor 515 and a second inductor 516 are arranged on the inner wall of the feeding trough, and the first inductor can make one of the fourth driving parts work to drive the first gear when the first inductor senses that a resistor is installed in the accommodating space The needle slides upwards out of the feeding chute, and the second sensor can make another fourth driving member work to drive the second blocking needle to extend downward into the feeding chute when sensing that the first stopper needle slides upwards. The device makes the driving part drive the blocking pin to slide up and down more accurately, and avoids the situation that two resistors enter the same resistor accommodating groove.

The ejection mechanism 62 includes a base 621, an electromagnet 622 and a suction nozzle 623 arranged on the base 621. The suction nozzle 623 is driven up and down by the electromagnet 622. The suction nozzle 623 is arranged on the top of the turntable 22 and sucks One end of the nozzle 623 is connected with an air pipe 624, and a spring 625 is pressed between the base 621 and the suction nozzle 623. When the resistor accommodation groove 221 corresponds to the first gap 111, the suction nozzle 623 absorbs the resistor, and at the same time, the electromagnet 622 pushes the suction nozzle 623 The resistors are ejected onto the packaging tape through the first gap 111 for packaging, so that the resistors can be discharged more quickly.

Claims (8)

1. A resistance packing machine comprises a machine frame, wherein a resistance feeding mechanism, a packing belt feeding mechanism and a heat sealing mechanism are arranged on the machine frame, the resistance feeding mechanism comprises a feeding channel, a rotary table and a motor for driving the rotary table to rotate, a plurality of resistance accommodating grooves are formed in the rotary table at intervals along the circumferential direction of the rotary table, a feeding unit and a discharging unit are arranged on the machine frame in the circumferential direction of the rotary table, an annular supporting table is fixedly arranged on the machine frame and positioned below the rotary table and used for supporting resistors in the resistance accommodating grooves, a first notch is formed in the annular supporting table, the discharging unit comprises a discharging track and a resistance ejecting mechanism, the discharging track is arranged below the first notch, the ejecting mechanism is positioned above the first notch, and the ejecting mechanism can eject the resistors in the resistance accommodating grooves to the discharging track through the first notch when one of the resistance accommodating grooves of the rotary table rotates to correspond to the first notch, the machine frame is provided with a material belt track at the rear side of the discharge track, the packaging belt feeding mechanism comprises a first feeding tray for conveying a first packaging belt to the discharge track and a second feeding tray for conveying a second packaging belt to the material belt track, the heat sealing mechanism comprises a heat sealing head and a first driving piece for driving the heat sealing head to move towards the material belt track, and the machine frame is further provided with a resistance detection mechanism and an unqualified resistance recovery mechanism, the feeding unit, the resistance detection mechanism, the unqualified resistance recovery mechanism and the discharge unit are sequentially arranged at intervals along the circumferential direction of the turntable, the resistance detection mechanism comprises copper sheets I, II, a pressing piece and a resistance detector which are arranged side by side and electrically connected with the two copper sheets, the two copper sheets are pressed by the pressing piece and are always abutted against two ends of the resistor in the resistor accommodating groove, the two copper sheets are in contact with two ends of the resistor in the resistor accommodating groove to detect the resistance value of the resistor, the unqualified resistor recovery mechanism comprises a shielding piece and a second driving piece for driving the shielding piece to move, a second notch is arranged on the annular supporting table, the shielding piece is movably arranged above the second notch so as to shield the second notch or expose the second notch, and an unqualified resistor recovery area is arranged below the second notch on the rack.

2. The resistance packaging machine according to claim 1, wherein the resistance detection mechanism further comprises a tension spring, a fixed seat is disposed on the frame, a third driving member is disposed on the fixed seat, a rotating shaft is disposed on an output shaft of the third driving member, the pressing member is connected to the rotating shaft, one end of the tension spring is disposed on the fixed seat, and the other end of the tension spring is disposed on the rotating shaft.

3. An electric resistance packaging machine as claimed in claim 1 or 2, wherein an infrared sensor is arranged on the frame between the unqualified electric resistance recovery mechanism and the discharging unit, a third notch is further arranged on the annular supporting table, the third notch is arranged between the feeding unit and the discharging unit, the third notch is opposite to the second notch, and an electric resistance recovery area is arranged below the third notch on the frame.

4. A resistance packaging machine according to claim 3, wherein the frame is further provided with a mounting seat, the mounting seat is positioned directly above the tape track, the heat seal head is mounted on the mounting seat, the heat seal head is detachably connected with the mounting seat, and the mounting seat is provided with a heating element capable of heating the heat seal head.

5. A resistance packing machine according to claim 4 wherein the feed unit includes a feed base having a feed chute, a conveyor belt is disposed in the feed chute for conveying the resistors into the resistor accommodating slots, the feed base is further provided with two groups of retaining pins for retaining the resistors on the conveyor belt to move forward and four driving members for driving the retaining pins to move up and down, the retaining pins are respectively a first retaining pin and a second retaining pin which are disposed at intervals in the front-rear direction and have accommodating spaces for accommodating one resistor, the fourth driving members are also provided with two groups, and each fourth driving member is respectively connected with the corresponding retaining pin for driving the corresponding retaining pin to slide into and out of the feed chute.

6. The electric resistance packing machine according to claim 5, wherein the ejection mechanism comprises a base, an electromagnet arranged on the base and a suction nozzle, the suction nozzle is driven by the electromagnet to lift, the suction nozzle is arranged above the turntable, an air pipe is connected to one end of the suction nozzle, and a spring is arranged between the base and the suction nozzle in a pressing manner.

7. The resistance packaging machine according to claim 2, wherein the fixing seat is rotatably provided with a mounting piece, the mounting piece is provided with a plurality of through holes, one end of the tension spring is hooked in one of the through holes, and the mounting piece is mounted on the fixing seat through a locking nut.

8. A resistance packing machine according to claim 5 or 6 wherein the feed chute is provided with a first sensor and a second sensor on the inner wall thereof, said first sensor being adapted to cause a fourth driver to operate to drive the first stopper pin to slide upwardly out of the feed chute when sensing that the resistance is contained in the accommodating space, said second sensor being adapted to cause another fourth driver to operate to drive the second stopper pin to extend downwardly into the feed chute when sensing that the first stopper pin slides upwardly.

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