Automatic assembly equipment for wiring screws of molded case circuit breaker

Abstract

The utility model discloses automatic assembly equipment for wiring screws of a molded case circuit breaker, and belongs to automatic assembly equipment. The automatic screw assembling machine comprises a chain plate conveying mechanism, a positioning mechanism, a screw assembling mechanism and a screw supplying mechanism, wherein the chain plate conveying mechanism, the positioning mechanism, the screw assembling mechanism and the screw supplying mechanism are mounted on a rack; the positioning mechanism comprises a supporting positioning device, a feeding transfer device and a discharging transfer device. The screw mounting mechanism is arranged close to the supporting and positioning device, and the supporting and positioning device comprises a supporting plate and a clamping unit. The automatic assembling device for the wiring screws of the molded case circuit breaker is reasonable in structural design, and the wiring screws can be automatically assembled on the molded case circuit breaker, so that the manual participation degree is reduced to the greatest extent, and the production efficiency is improved.

Description

TECHNICAL FIELD

[0001] The utility model relates to a kind of moulded case circuit breaker wiring screw automatic assembly equipment, belong to moulded case circuit breaker production equipment structural design field. BACKGROUND

[0002] Moulded case circuit breaker (also called plastic housing type circuit breaker) is a kind of protective switch device installed in low-voltage distribution line, can be closed, load and break the current under normal loop condition, and can be closed, load and break the current under abnormal loop condition within specified time. The existing moulded case circuit breaker (structure as shown in Figure 1 The wiring board 9 on the end of existing moulded case circuit breaker (structure as shown in The utility model relates to a kind of moulded case circuit breaker wiring screw automatic assembly equipment, belong to moulded case circuit breaker production equipment structural design field.

[0003] In view of the deficiencies pointed out in the background art, the utility model aims to provide a kind of moulded case circuit breaker wiring screw automatic assembly equipment, using it can automatically assemble wiring screw on moulded case circuit breaker, to minimize the degree of human participation, improve production efficiency, conducive to reducing production cost.

[0004] The technical scheme for achieving the utility model is as follows:

[0005] The utility model provides a kind of moulded case circuit breaker wiring screw automatic assembly equipment, including the chain plate conveying mechanism for conveying moulded case circuit breaker from front to back, the positioning mechanism for positioning moulded case circuit breaker in the middle of the chain plate conveying mechanism, the screw mounting mechanism for mounting wiring screw on moulded case circuit breaker at the positioning mechanism and the screw supply mechanism for the screw mounting mechanism Supply wiring screw, the chain plate conveying mechanism, positioning mechanism, screw mounting mechanism and screw supply mechanism are mounted on rack;The positioning mechanism includes support positioning device suspended above chain plate conveying mechanism, the feeding transfer device for lifting and transferring moulded case circuit breaker on chain plate conveying mechanism to the support positioning device and the unloading transfer device for receiving moulded case circuit breaker on support positioning device and transferring it to chain plate conveying mechanism;The screw mounting mechanism is close to the support positioning device, and the support positioning device includes support backing plate for placing moulded case circuit breaker and clamping unit for clamping and positioning moulded case circuit breaker on the support backing plate.

[0006] Preferably, the chain plate conveying mechanism includes two parallel chain plate conveying lines, and the two chain plate conveying lines have a gap between them.

[0007] Preferably, the supporting and positioning device comprises two supporting plates arranged in relative spacing, and the two supporting plates are respectively suspended and fixed above the two chain plate conveying lines; the clamping unit comprises a first air cylinder fixed on the supporting plate and a clamping block driven to move by the first air cylinder.

[0008] Preferably, the feeding and transferring device comprises a lifting driving unit arranged in the gap between the two chain plate conveying lines and a translation driving air cylinder driving the lifting driving unit to move in the front-rear direction, the lifting driving unit comprises a feeding supporting plate lifting the plastic shell circuit breaker, a second air cylinder driving the feeding supporting plate to move up and down, and a baffle fixed at the rear end of the feeding supporting plate, the spacing between the two supporting plates is suitable for the feeding supporting plate to pass through, the feeding supporting plate is elevated to the limit position, and the height is not lower than the height of the supporting plate, the baffle is located at the rear side of the supporting plate when the feeding supporting plate moves to the limit position, the lifting driving unit elevates the plastic shell circuit breaker, and then drives it to move backward above the supporting plate by the translation driving air cylinder, and the plastic shell circuit breaker is stopped by the supporting plate.

[0009] Preferably, the front end of the feeding supporting plate is provided with a pushing air cylinder opposite to the baffle, and the pushing direction of the pushing air cylinder is the front-rear direction.

[0010] Preferably, the discharging and transferring device is arranged at the rear side of the supporting and positioning device, and comprises a discharging supporting plate for placing the plastic shell circuit breaker and a third air cylinder driving the discharging supporting plate to move up and down, when the translation driving air cylinder drives the feeding supporting plate to move backward, the plastic shell circuit breaker on the supporting plate can be pushed to the discharging supporting plate.

[0011] Preferably, the screw mounting mechanism comprises a first mounting frame mounted on the rack, a lead screw transmission device fixed on the first mounting frame, a mounting seat driven to move in the front-rear direction by the lead screw transmission device, a fourth air cylinder and a bit sleeve mounted on the mounting seat, and a motor device driven to move up and down by the fourth air cylinder, a bit driven to rotate by the motor device is arranged in the bit sleeve, an insertion cavity for the head end of the wiring screw to extend into is formed at the bottom end of the bit sleeve, and a magnet is embedded in the insertion cavity.

[0012] Preferably, the screw supply mechanism comprises a vibration disc and a distribution unit, the vibration disc and the distribution unit are connected through a feeding flow channel, the feeding flow channel is arranged on the feeding straight vibration, the distribution unit comprises a distribution base provided with a channel, a distribution core arranged in the channel and a fifth cylinder for driving the distribution core to move in the channel, the side of the channel is communicated with the outlet end of the feeding flow channel through a side opening, a notch for accommodating the terminal screw is arranged on the distribution core, and the terminal screw in the feeding flow channel can enter the notch through the side opening when the notch is opposite to the side opening.

[0013] Preferably, the chain plate conveying mechanism is provided with protective frames on both sides, and the spacing between the protective frames on both sides can be adjusted through a sixth cylinder.

[0014] Preferably, the input end of the chain plate conveying mechanism is provided with a blocking distribution mechanism, the blocking distribution mechanism comprises a second mounting frame fixedly connected with the rack, a seventh cylinder mounted on the second mounting frame and a blocking block driven by the seventh cylinder for blocking the molded case circuit breaker.

[0015] The utility model has the positive effect: the utility model discloses a molded case circuit breaker terminal screw automatic assembly equipment when running, and the molded case circuit breaker enters the input end of chain plate conveying mechanism and is transported to move backward through chain plate conveying mechanism, and the molded case circuit breaker is positioned after being blocked in the process of moving through the positioning mechanism, and the screw mechanism extracts the terminal screw from the screw supply mechanism and installs it on the molded case circuit breaker positioned by the positioning mechanism, and when the molded case circuit breaker is positioned through the positioning mechanism, the molded case circuit breaker on the chain plate conveying mechanism is lifted and placed on the support plate of the support positioning device through the loading transfer device, and the molded case circuit breaker can be positioned through the clamping unit, and the molded case circuit breaker is driven to return to the chain plate conveying mechanism through the unloading transfer device after the terminal screw is assembled, and continues to transport backward, so that the automatic assembly of the terminal screw is realized, the structure design of the utility model for the molded case circuit breaker terminal screw assembly equipment is reasonable, the automatic assembly of the terminal screw is realized through the cooperation of each mechanism, so that the artificial participation degree is reduced, the production efficiency can be improved, the production cost is reduced, and good use effect is obtained. BRIEF DESCRIPTION OF DRAWINGS

[0016] In order to more clearly illustrate the specific embodiment of the utility model or the technical scheme in the prior art, the drawings needed in the specific embodiment or the prior art description will be briefly introduced below. In the drawings, similar elements or parts are generally identified by similar reference numerals. In the drawings, each element or part is not necessarily drawn according to the actual proportion.

[0017] Figure 1 It is a structural schematic view of the molded case circuit breaker.

[0018] Figure 2 It is a structure schematic view of the plastic shell circuit breaker wiring screw automatic assembly equipment in the utility model;

[0019] Figure 3 It is a structure schematic view of the positioning mechanism in the utility model;

[0020] Figure 4 It is Figure 3 The top view of the positioning mechanism shown in the figure;

[0021] Figure 5 It is the sectional view along the line A-A in the figure; Figure 4

[0022] Figure 6 It is the sectional view along the line B-B in the figure; Figure 4

[0023] Figure 7 It is the structure schematic view of the feeding transfer device in the utility model;

[0024] Figure 8 It is the structure schematic view of the screw mounting mechanism in the utility model;

[0025] Figure 9 It is Figure 8 The structure schematic view of the screw mounting mechanism shown in the figure after removing some components;

[0026] Figure 10 It is Figure 9 The local enlarged view of C in the figure;

[0027] Figure 11 It is the structure schematic view of the screw supply mechanism (omitting the vibration disc) in the utility model;

[0028] Figure 12 It is Figure 11 The structure schematic view of the material distribution base in the figure;

[0029] Figure 13 It is the structure schematic view of the blocking material distribution mechanism in the utility model.

[0030] ​​The figure shows the following reference signs: 1 - chain plate conveying mechanism; 11 - chain plate conveying line; 2 - positioning mechanism; 21 - support positioning device; 211 - support plate; 212 - first air cylinder; 213 - clamping block; 22 - feeding transfer device; 220 - translation driving air cylinder; 221 - feeding plate; 222 - second air cylinder; 223 - baffle; 224 - pushing air cylinder; 23 - discharging transfer device; 231 - discharging plate; 232 - third air cylinder; 3 - screw mounting mechanism; 31 - first mounting frame; 32 - screw rod transmission device; 33 - mounting seat; 34 - fourth air cylinder; 35 - motor device; 36 - bit head; 37 - magnet; 38 - bit head sleeve; 4 - screw supply mechanism; 41 - vibration disc; 42 - distribution unit; 421 - distribution base; 4210 - channel; 422 - distribution core; 4220 - notch; 4211 - side opening; 423 - fifth air cylinder; 43 - feeding flow channel; 44 - feeding direct vibration; 5 - rack; 6 - protection frame; 7 - sixth air cylinder; 8 - blocking distribution mechanism; 81 - blocking block; 80 - second mounting frame; 82 - seventh air cylinder; 9 - wiring board; 10 - wiring screw; 01 - molded case circuit breaker. DETAILED DESCRIPTION

[0031] The embodiments of the technical scheme of the utility model will be described in detail below with reference to the drawings. The following embodiments are only used to more clearly illustrate the technical scheme of the utility model, and therefore only serve as examples, and cannot limit the protection scope of the utility model.

[0032] It should be noted that, unless otherwise specified, the technical terms or scientific terms used in the utility model should be the usual meaning understood by the technical personnel in the field to which the utility model belongs.

[0033] The structure of the molded case circuit breaker wiring screw automatic assembly equipment in the embodiment is as shown in the figure Figures 1 to 13As shown, it comprises a chain conveying mechanism 1 for conveying the plastic shell circuit breaker 01 from front to back, a positioning mechanism 2 arranged at the middle of the chain conveying mechanism 1 for positioning the plastic shell circuit breaker 01, a screwing mechanism 3 arranged at the positioning mechanism 2 for screwing the terminal screw on the plastic shell circuit breaker 01, and a screw supply mechanism 4 for supplying the terminal screw for the screwing mechanism 3, the chain conveying mechanism 1, the positioning mechanism 2, the screwing mechanism 3 and the screw supply mechanism 4 are installed on a rack 5, and each mechanism is controlled by a control system to move in order; the positioning mechanism 2 comprises a supporting and positioning device 21 arranged above the chain conveying mechanism 1, a feeding and transferring device 22 for lifting the plastic shell circuit breaker 01 on the chain conveying mechanism 1 and transferring it to the supporting and positioning device 21, and a discharging and transferring device 23 for receiving the plastic shell circuit breaker 01 on the supporting and positioning device 21 and transferring it to the chain conveying mechanism 1; the screwing mechanism 3 is arranged close to the supporting and positioning device 21, and the supporting and positioning device 21 comprises a supporting plate 211 for placing the plastic shell circuit breaker 01 and a clamping unit for clamping and positioning the plastic shell circuit breaker 01 on the supporting plate 211; when the terminal screw automatic assembly equipment is running, the plastic shell circuit breaker 01 enters from the input end of the chain conveying mechanism 1 and moves backward through the chain conveying mechanism 1, after the plastic shell circuit breaker 01 is blocked and positioned by the positioning mechanism 2 during the movement, the screwing mechanism 3 extracts the terminal screw from the screw supply mechanism 4 and screws it on the plastic shell circuit breaker 01 positioned by the positioning mechanism 2; specifically, when the plastic shell circuit breaker is positioned by the positioning mechanism 2, the feeding and transferring device 22 lifts and raises the plastic shell circuit breaker on the chain conveying mechanism 1 and places it on the supporting plate 211 of the supporting and positioning device 21, and then the plastic shell circuit breaker is clamped and positioned by the clamping unit, after the terminal screw is screwed, the plastic shell circuit breaker is driven by the discharging and transferring device 23 to return to the chain conveying mechanism 1 and continue to be conveyed backward, so as to realize the automatic assembly of the terminal screw; the terminal screw assembly equipment in the embodiment realizes the automatic assembly of the terminal screw through the cooperation of each mechanism, which can reduce the manual participation and improve the production efficiency and reduce the production cost.

[0034] The chain conveying mechanism 1 in the embodiment comprises two parallel chain conveying lines 11, and the two chain conveying lines 11 have a gap therebetween, the two ends of the plastic shell circuit breaker 01 are supported on the chain conveying lines 11 during conveying, and the chain conveying lines 11 are driven to convey, the chain plates (not shown in the figure) in the two chain conveying lines 11 are synchronously moved by a motor, and the structure belongs to the prior art, which will not be described in detail in the embodiment.

[0035] Further, as shown in FIG. 2, the chain conveying mechanism 1 comprises a chain conveying line 11, and the chain conveying line 11 has a gap therebetween, the two ends of the plastic shell circuit breaker 01 are supported on the chain conveying line 11 during conveying, and the chain conveying line 11 is driven to convey, the chain plate (not shown in the figure) in the chain conveying line 11 is synchronously moved by a motor, and the structure belongs to the prior art, which will not be described in detail in the embodiment. Figure 5 and Figure 6As shown, the support positioning device 21 includes two support plates 211 arranged at a distance, and the two support plates 211 are respectively suspended and fixed above the two chain plate conveying lines 11; the clamping unit includes a first cylinder 212 fixed on the support plate 211 and a clamping block 213 driven to move by the first cylinder 212, and the two support plates 211 arranged at a distance can effectively support the molded case circuit breaker 01, and the gap between the two support plates 211 can be used to avoid the feeding transfer device 22; when the clamping unit clamps the molded case circuit breaker, the first cylinder 212 drives the clamping block 213 to approach and abut against the molded case circuit breaker to clamp and position, so as to prevent the molded case circuit breaker from being displaced to affect the assembly when the wiring screw is assembled, and after the wiring screw assembly is completed, the first cylinder 212 drives the clamping block 213 to move away from the molded case circuit breaker to release the limitation of the molded case circuit breaker.

[0036] As shown in Figure 7 As shown, the feeding transfer device 22 includes a lifting driving unit arranged in the gap between the two chain plate conveying lines 11 and a translation driving cylinder 220 driving the lifting driving unit to move in the front-rear direction, the lifting driving unit includes a feeding plate 221 lifting the molded case circuit breaker 01, a second cylinder 222 driving the feeding plate 221 to move up and down, and a baffle 223 fixed at the rear end of the feeding plate 221, the distance between the two support plates 211 is suitable for the feeding plate 221 to pass through, the height of the feeding plate 221 when being lifted up to the limit position is not lower than the height of the support plate 211, and when the feeding plate 221 moves to the limit position, the baffle 223 is located at the rear side of the support plate 211, and after the lifting driving unit lifts the molded case circuit breaker 01, the feeding plate 221 is driven by the translation driving cylinder 220 to be above the support plate 211, and the lifting driving unit drives the molded case circuit breaker 01 to be blocked by the support plate 211 and stay; when the above feeding transfer device 22 feeds, the molded case circuit breaker conveyed by the chain plate conveying line 11 is first blocked by the front end of the support plate 211, the feeding plate 221 is driven by the second cylinder 222 to move upwards to lift the molded case circuit breaker and separate from the chain plate conveying line 11, then the feeding plate 221 drives the molded case circuit breaker to move backwards to be above the support plate 211 under the driving of the translation driving cylinder 220, in this process, the feeding plate 221 enters the gap between the two support plates 211, finally the second cylinder 222 drives the feeding plate 221 to descend, and the molded case circuit breaker 01 is supported and stays on the support plate 11, so as to realize feeding transfer.

[0037] Further, in order to ensure the position accuracy of the MCCB when assembling the terminal screw, the front end of the feeding support plate 221 is provided with a pushing cylinder 224 opposite to the baffle 223, the pushing direction of the pushing cylinder 224 is the front-back direction, when the feeding support plate 221 is lifted under the driving of the second cylinder 222, the MCCB is lifted, and the MCCB on the feeding support plate 221 is pushed by the pushing cylinder 224 to abut against the baffle 223, so as to adjust the position of the MCCB, so as to avoid the influence of the position deviation of the MCCB on the assembly of the terminal screw.

[0038] In the embodiment, the feeding transfer device 23 is arranged at the rear side of the supporting and positioning device 21, which comprises a feeding support plate 231 for placing the MCCB 01 and a third cylinder 232 for driving the feeding support plate 231 to move up and down, when the supporting plate 211 is pushed by the baffle 223 to move to the feeding support plate 231 under the driving of the translation driving cylinder 220, i.e. when the next MCCB is transferred and conveyed to the supporting and positioning device 21 by the feeding transfer device 22, the previous MCCB with the assembled terminal screw is pushed backward to the feeding support plate 231 by the baffle 223, and then the feeding support plate 231 drives the MCCB to descend back to the chain plate conveying line 11 under the driving of the third cylinder 232 to continue to convey backward.

[0039] As shown in Figures 8 to 10 The screw assembling mechanism 3 comprises a first mounting frame 31 mounted on the rack 5, a screw rod transmission device 32 fixed on the first mounting frame 31, a mounting seat 33 driven by the screw rod transmission device 32 to move in the front-back direction, a fourth cylinder 34 and a bit sleeve 38 mounted on the mounting seat 33, and a motor device 35 driven by the fourth cylinder 34 to move up and down, a bit 36 driven by the motor device 35 to rotate is arranged in the bit sleeve 38, and a plug cavity is formed at the bottom end of the bit sleeve 38 for the head end of the terminal screw to extend into, a magnet 37 is embedded in the plug cavity, when the terminal screw is extracted from the screw supply mechanism 4, the head of the terminal screw is inserted into the plug cavity of the bit sleeve 38 and cooperates with the bottom end of the bit, and the terminal screw is adsorbed by the magnet to prevent falling during the transfer process.

[0040] As shown in Figure 11 and Figure 12As shown, the screw supply mechanism 4 includes a vibrating disc 41 and a distribution unit 42, the vibrating disc 41 and the distribution unit 42 are connected through a supply flow channel 43, the supply flow channel 43 is arranged on a supply straight vibration 44, the distribution unit 42 includes a distribution base 421 provided with a channel 4210, a distribution core 422 arranged in the channel 4210 and a fifth cylinder 423 driving the distribution core 422 to move in the channel 4210, the side of the channel 4210 is communicated with the outlet end of the supply flow channel 43 through a side opening 4211, a slot 4220 for accommodating the terminal screw is arranged on the distribution core 422, when the slot 4220 is opposite to the side opening 4211, the terminal screw in the supply flow channel 43 can enter the slot 4220 through the side opening 4211; when supplying the terminal screw, the vibrating disc 41 delivers the terminal screw into the supply flow channel 43 for temporary storage, the frontmost terminal screw is blocked by the side of the distribution core 422 at the side opening 4211 of the distribution base 421, when the distribution core 422 has an initial position and a feeding position in the channel 4210 under the driving of the fifth cylinder 423, when the distribution core 422 is at the initial position, the slot 4220 thereon is opposite to the side opening 4211, the frontmost terminal screw enters the slot 4220, and the fifth cylinder 423 drives the distribution core 422 to move to the feeding position, so that the terminal screw in the slot 4220 is moved to a position where it can be extracted by the screw loading mechanism 3.

[0041] In some embodiments, the number of screw supply mechanisms 4 is two, which are respectively used to supply terminal screws of different specifications to adapt to production needs, when it is needed to realize terminal screw assembly on two different types of molded case circuit breakers on the equipment, the corresponding screw supply mechanism 4 is used for feeding, such as M8 Allen screws are mostly used on the 250 type molded case circuit breaker, and M10 Allen screws are mostly used on the 400 type molded case circuit breaker.

[0042] As shown in the drawings, Figure 2 As shown, the chain plate conveying mechanism 1 is provided with protective frames 6 on both sides, the protective frames 6 are arranged to prevent the molded case circuit breaker from deviating from the chain plate conveying line 11 during conveying, and the spacing between the two protective frames 6 can be adjusted through a sixth cylinder 7, the spacing between the two protective frames 6 can be controlled through the sixth cylinder 7, so as to adapt to the conveying of molded case circuit breakers of different specifications, such as the size of the 250 type molded case circuit breaker is smaller than the size of the 400 type molded case circuit breaker, so the spacing between the two protective frames 6 needs to be adjusted when conveying molded case circuit breakers of two different types.

[0043] Further, the input end of the chain plate conveying mechanism 1 is provided with a blocking and distributing mechanism 8, through which the plastic shell circuit breaker can be blocked and distributed, and the sequential conveying of the plastic shell circuit breaker is realized. Figure 13 As shown in the drawing, the blocking and distributing mechanism 8 comprises a second mounting frame 80 fixedly connected with the rack 5, a seventh cylinder 82 mounted on the second mounting frame 80 and a blocking block 81 driven by the seventh cylinder 82 for blocking the plastic shell circuit breaker 01, and the blocking block 81 is driven by the seventh cylinder 82 to move in and out so as to control the plastic shell circuit breaker 01 to stop and advance.

[0044] Obviously, the above embodiments of the utility model 1 are only examples for clearly illustrating the utility model, and are not the limitation of the embodiments of the utility model. For the ordinary skilled in the art, other different forms of changes or variations can be made on the basis of the above description. Here, it is not necessary and impossible to enumerate all the embodiments. The changes or variations which belong to the substantial spirit of the utility model and are extended obviously still belong to the protection scope of the utility model.

Claims

1. A device for automatic assembly of a plastic housing circuit breaker terminal screw, characterized in that, The application relates to a chain plate conveying mechanism (1) for conveying plastic shell circuit breakers (01) from front to back, a positioning mechanism (2) arranged at the middle of the chain plate conveying mechanism (1) and used for positioning the plastic shell circuit breakers (01), a screw mounting mechanism (3) arranged at the positioning mechanism (2) and used for mounting wiring screws on the plastic shell circuit breakers (01), and a screw supply mechanism (4) for supplying the screw mounting mechanism (3) with the wiring screws, wherein the chain plate conveying mechanism (1), the positioning mechanism (2), the screw mounting mechanism (3) and the screw supply mechanism (4) are installed on a rack (5); the positioning mechanism (2) comprises support positioning devices (21) arranged above the chain plate conveying mechanism (1), a feeding transfer device (22) used for lifting the plastic shell circuit breakers (01) on the chain plate conveying mechanism (1) and transferring the plastic shell circuit breakers (01) to the support positioning devices (21), and a discharging transfer device (23) used for receiving the plastic shell circuit breakers (01) on the support positioning devices (21) and transferring the plastic shell circuit breakers (01) to the chain plate conveying mechanism (1); the screw mounting mechanism (3) is arranged close to the support positioning devices (21), and the support positioning devices (21) comprise support plates (211) used for placing the plastic shell circuit breakers (01) and clamping units used for clamping and positioning the plastic shell circuit breakers (01) on the support plates (211).

2. The molded case circuit breaker wire screw automatic assembly apparatus of claim 1, wherein, The chain plate conveying mechanism (1) comprises two parallel chain plate conveying lines (11) with a gap between the two chain plate conveying lines (11).

3. The molded case circuit breaker wire screw automatic assembly apparatus of claim 2, wherein, The support positioning devices (21) comprise two support plates (211) arranged at a distance from each other and suspendedly fixed above the two chain plate conveying lines (11); the clamping units comprise first air cylinders (212) fixed on the support plates (211) and clamping blocks (213) driven to move by the first air cylinders (212).

4. The device of claim 3, wherein the device further comprises a second motorized assembly line for assembling the plastic housing circuit breaker terminal screw, the second motorized assembly line comprising a second motorized assembly line conveyor, a second motorized assembly line terminal screw feeder, and a second motorized assembly line terminal screw applicator. The feeding transfer device (22) comprises a lifting driving unit arranged in the gap between the two chain plate conveying lines (11) and a translation driving air cylinder (220) used for driving the lifting driving unit to move in the front-back direction; the lifting driving unit comprises a feeding plate (221) used for lifting the plastic shell circuit breakers (01), a second air cylinder (222) used for driving the feeding plate (221) to move up and down, and a baffle (223) fixed at the rear end of the feeding plate (221); the distance between the two support plates (211) is suitable for the feeding plate (221) to pass through; when the feeding plate (221) is lifted up to the limit position, the height of the feeding plate (221) is not lower than the height of the support plates (211); when the feeding plate (221) moves to the limit position, the baffle (223) is located at the rear side of the support plates (211); after the lifting driving unit lifts the plastic shell circuit breakers (01), the plastic shell circuit breakers (01) are driven to move backward by the translation driving air cylinder (220) to above the support plates (211), and the lifting driving unit drives the plastic shell circuit breakers (01) to stop at the support plates (211) and are blocked.

5. The device of claim 4, wherein the device further comprises a second motorized assembly line for assembling the plastic housing circuit breaker terminal screw, the second motorized assembly line comprising a second motorized assembly line conveyor, a second motorized assembly line terminal screw feeder, and a second motorized assembly line terminal screw applicator. The upper feeding supporting plate (221) is provided with a pushing cylinder (224) opposite to the baffle (223), and the pushing direction of the pushing cylinder (224) is the front-rear direction.

6. The molded case circuit breaker wire screw automatic assembly apparatus of claim 4, wherein, The lower feeding transferring device (23) is arranged at the rear side of the supporting and positioning device (21), and comprises a lower feeding supporting plate (231) for placing the plastic shell circuit breaker (01) and a third cylinder (232) for driving the lower feeding supporting plate (231) to move up and down.

7. The molded case circuit breaker wire screw automatic assembly apparatus of claim 2, wherein, The screw feeding mechanism (3) comprises a first mounting frame (31) mounted on the rack (5), a screw rod transmission device (32) fixed on the first mounting frame (31), a mounting base (33) driven by the screw rod transmission device (32) to move in the front-rear direction, a fourth cylinder (34) and a bit sleeve (38) mounted on the mounting base (33), and a motor device (35) driven by the fourth cylinder (34) to move up and down, a bit (36) driven by the motor device (35) to rotate is arranged in the bit sleeve (38), and a plug cavity is formed at the bottom end of the bit sleeve (38) for the head end of the wiring screw to extend into, and a magnet (37) is embedded in the plug cavity.

8. The molded case circuit breaker wire screw automatic assembly apparatus of claim 2, wherein, The screw feeding mechanism (4) comprises a vibrating disc (41) and a distribution unit (42), the vibrating disc (41) and the distribution unit (42) are connected through a feeding flow channel (43), the feeding flow channel (43) is arranged on a feeding direct vibration (44), the distribution unit (42) comprises a distribution base (421) provided with a channel (4210), a distribution core (422) arranged in the channel (4210) and a fifth cylinder (423) for driving the distribution core (422) to move in the channel (4210), the side of the channel (4210) is communicated with the outlet end of the feeding flow channel (43) through a side opening (4211), a slot (4220) for accommodating the wiring screw is arranged on the distribution core (422), and when the slot (4220) is opposite to the side opening (4211), the wiring screw in the feeding flow channel (43) can enter the slot (4220) through the side opening (4211).

9. The molded case circuit breaker wire screw automatic assembly apparatus of claim 1, wherein, The chain plate conveying mechanism (1) is provided with protective frames (6) on both sides, and the distance between the protective frames (6) on both sides can be adjusted through a sixth cylinder (7).

10. The molded case circuit breaker wire screw automatic assembly apparatus of claim 1, wherein, The input end of the chain plate conveying mechanism (1) is provided with a blocking and distributing mechanism (8), the blocking and distributing mechanism (8) comprises a second mounting frame (80) fixedly connected with the rack (5), a seventh cylinder (82) mounted on the second mounting frame (80) and a blocking block (81) driven by the seventh cylinder (82) for blocking the plastic shell circuit breaker (01).

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