CN219327495U

CN219327495U - Automatic threading machine for shutter blades

Info

Publication number: CN219327495U
Application number: CN202223288324.9U
Authority: CN
Inventors: 罗兆敏
Original assignee: Individual
Current assignee: Individual
Priority date: 2022-12-08
Filing date: 2022-12-08
Publication date: 2023-07-11
Anticipated expiration: 2032-12-08

Abstract

The utility model relates to an automatic threading machine for blind blades, which comprises a material distributing and feeding unit, a feeding machine head and a threading unit, wherein the material distributing and feeding unit pushes out the blades one by one, and the feeding machine head receives the blades and sends out the blades to the threading unit for threading; the discharging side of the feeding machine head is provided with an anti-rebound component, so that the problem of rebound clamping is solved; the threading unit is provided with a threading work module which is used for accurately threading the blades sent out by the feeding machine head into the grid frame of the ladder belt, supporting the blades after threading upwards for stacking and timely cutting off the rope ladder; the blade penetrating work module is provided with a ladder belt separating and expanding frame, the ladder belt separating and expanding frame is provided with a first separating and expanding wheel and a second separating and expanding wheel, the first separating and expanding wheel and the second separating and expanding wheel are arranged according to the conveying sequence of the ladder belt, a grid-by-grid output state is established for the ladder belt, smooth blade penetrating is ensured, the blade is prevented from colliding with the ladder belt, the working efficiency and the quality of the automatic shutter blade penetrating machine are improved, the operation rate and the operability of the automatic shutter blade penetrating machine are greatly improved, and the industrial utilization is met.

Description

Automatic threading machine for shutter blades

Technical Field

The utility model relates to the technical field of blind production machinery, in particular to an automatic threading machine for blind blades.

Background

The shutter is composed of a plurality of parallel blades, and in order to maintain the orderly arrangement of the plurality of strip-shaped blades and to perform the synchronous adjustment of the blade angles and the operation of lifting and retracting, proper number of ladder belts are required to be connected in series according to the width of the shutter. In the conventional process of manufacturing the blind, in which the blades are finished and threaded (ladder tape), this is an indispensable, time-consuming and labor-consuming process, which affects the quality of the finished blind to a great extent. At present, in the field of shutter production and processing, the process is mainly finished by manual operation, which not only restricts the improvement of production efficiency, but also the quality of products is difficult to control; meanwhile, the production cost of the product is greatly improved by utilizing manual production in a large quantity.

Then, the automatic threading machine for the blades of the blind is arranged, so that the mechanical replacement of manual threading of the blades of the blind is realized, and the production efficiency and quality are improved. As shown in fig. 1, the automatic blade threading machine of the existing blind mainly comprises a material distributing and feeding unit 801, a feeding machine head 803 and a threading unit 804, wherein the feeding machine head is arranged between the material distributing and feeding unit and the threading unit; as shown in fig. 2, the material-dividing and feeding unit 801 sends the blades 802 to the feeding machine head 803 one by one, the feeding machine head 803 is internally provided with a feeding roller, the blades are driven to pass through and send to the threading unit 804 to realize threading, the other end of the threading unit is provided with a stop wall 8041, a stop is provided, and the blades penetrated from the feeding machine head are stopped after touching the stop wall. However, in actual production, the blades are structurally, so that the blades are elastic after penetrating out of the feeding machine head and touching the retaining wall, and the blades rebound into a discharge hole of the feeding machine head frequently to form clamping materials, so that the production process is influenced; and the threading process needs to control the conveyer belt to convey, but the conveyer belt is composed of two vertical ropes and a plurality of transverse lines connected between the two vertical ropes at intervals, and the blades penetrate between the two vertical ropes and are supported by the transverse lines to obtain layered postures. How to ensure the automatic threading smoothness of the blades and prevent the blades from colliding with the ladder strap is a concern in the industry. Therefore, the applicant provides an automatic threading machine for a blind blade, namely the application.

Disclosure of Invention

The utility model aims to provide an automatic threading machine for a blind blade, which realizes that the machine replaces the manual operation, solves the problems of rebound of discharging and the collision of the blade with a ladder strap, ensures that the blade is threaded smoothly, and improves the production efficiency.

In order to achieve the above purpose, the utility model adopts the following technical scheme:

an automatic threading machine for a blind blade, which comprises:

the material distributing and feeding unit is provided with a strip-shaped material distributing machine seat and a pushing mechanism arranged on the material distributing machine seat, and the pushing mechanism pushes out the blades stored in the material distributing machine seat one by one;

the feeding machine head is connected to the discharge end of the material distributing and feeding unit, and receives the blades pushed out by the blade pushing mechanism and drives the blades to be sent out through the feeding roller; the discharging side of the feeding machine head is provided with an anti-rebound component, and the discharging tail end of the guide blade of the anti-rebound component deviates from the discharging hole of the feeding machine head;

the threading unit is connected to the discharge end of the feeding machine head and is provided with a strip threading machine seat and a plurality of threading working modules which are arranged on the threading machine seat and are arranged at intervals along the length direction of the threading machine seat, and the threading working modules are used for accurately threading the blades sent out by the feeding machine head into the grid frame of the ladder belt, supporting the blades after threading upwards to stack and timely cutting the rope ladder; the threading work module comprises a mounting seat, a guide, a deconcentrator, a storage rack and a shearing mechanism, wherein the guide, the deconcentrator, the storage rack and the shearing mechanism are arranged on the mounting seat, the guide guides a blade to pass through a corresponding grid frame on the ladder belt, the deconcentrator is arranged at the downstream of the guide, and the deconcentrator guides the ladder belt to output and open the grid frame; the elevator belt sub-expansion frame is arranged on the mounting seat, a first sub-expansion wheel and a second sub-expansion wheel are arranged on the elevator belt sub-expansion frame, the first sub-expansion wheel and the second sub-expansion wheel are arranged according to the conveying sequence of the elevator belt, the first sub-expansion wheel is positioned on the elevator belt sub-expansion frame and rotates around a shaft, the second sub-expansion wheel is rotatably arranged on the elevator belt sub-expansion frame and floats under the guidance of a guide part provided by the elevator belt sub-expansion frame, and the elevator belt enters the deconcentrator after being output from the second sub-expansion wheel; the first expansion wheel and the second expansion wheel cooperate to establish an output state for the ladder belt, wherein the output state is that the ladder belt is output according to the size of the grid frame; the storage frame is used for supporting and stacking the worn blades upwards, and the shearing mechanism is used for shearing the rope ladder timely so as to remove the worn blades in groups.

The technical scheme is that the device further comprises a carrying mechanism, wherein the carrying mechanism is used for moving out the stacked blade group on the storage rack; the carrying mechanism is provided with a truss, a lifting cylinder arranged on the truss and a grabbing claw driven by the lifting cylinder to lift, wherein the grabbing claw grabs the stacked blade group on the storage rack and moves along with the lifting cylinder and the truss in multiple degrees of freedom.

The above scheme is further that the rebound prevention component is a lifter, and the discharging tail end of the blade is jacked up from the lower side of the discharging direction of the blade.

The above scheme is further that the rebound prevention assembly at least comprises an elastic sheet, wherein the elastic sheet is provided with an inclined guide surface which inclines upwards from bottom to top along the discharging direction of the blade, and the inclined upper tail end of the inclined guide surface is higher than the discharging hole of the feeding machine head.

The scheme is that the rebound prevention assembly further comprises a spring plate seat, the spring plate seat is fixedly connected with the feeding machine head, a U-shaped groove with an upward opening is arranged on the spring plate seat, the shape and the size of the U-shaped groove are matched with those of the discharge hole, and the U-shaped groove is communicated and butted with the discharge hole in the discharge direction of the blade; the elastic sheet is assembled on the elastic sheet seat, the inclined guide surface is embedded in the U-shaped groove, and the inclined upper tail end of the inclined guide surface is lower than the height of the left side wall and the right side wall of the U-shaped groove.

The above scheme is further that the structure shape of the first sub-expansion wheel is consistent with that of the second sub-expansion wheel, the periphery of the first sub-expansion wheel is provided with a plurality of first tooth grooves which are arranged at intervals, the periphery of the second sub-expansion wheel is provided with a plurality of second tooth grooves which are arranged at intervals, and the span between the adjacent first tooth grooves on the first sub-expansion wheel and the span between the adjacent second tooth grooves on the second sub-expansion wheel are matched with the grid frame length L of the ladder belt.

The ladder belt expansion frame is provided with parallel and opposite supporting plates, the guide parts are long-strip slide ways arranged on the supporting plates, the guide parts are vertically arranged, and the second expansion wheels are movably clamped with the guide parts through core shafts with protruding ends.

The guide device, the deconcentrator and the storage rack are arranged in sequence according to the passing direction of the blade, the deconcentrator is driven by the driver to swing back and forth at a first position and a second position, and the first position and the second position are positioned between the guide device and the storage rack; the storage rack is provided with two supporting arms which are upwards arranged in parallel and a U-shaped storage space positioned between the two supporting arms, the two supporting arms are provided with matched material supporting claws which are arranged at intervals along the height direction of the supporting arms, and the lowest material supporting claw is higher than the deconcentrator in the height direction; the U-shaped storage space is used for allowing the blades to pass through, and a pushing block used for pushing the worn blades upwards to the material supporting claw is further arranged on the storage frame and connected with the telescopic end of the pushing cylinder.

The scheme is further that the shearing mechanism is arranged on one side of the blade threading direction and comprises an L-shaped support, a first shearing cylinder, a second shearing cylinder, a shearing sliding seat and scissors, the L-shaped support is fixed on the mounting seat, the first shearing cylinder is positioned on the L-shaped support, the telescopic end of the first shearing cylinder is connected with the shearing sliding seat, the second shearing cylinder and the scissors are installed on the shearing sliding seat together, the telescopic end of the second shearing cylinder is connected with the scissors through a connecting rod assembly, the connecting rod assembly and the scissors form a movable quadrilateral structure, and the scissors are driven to open and close when the telescopic end of the second shearing cylinder moves in a telescopic mode.

The utility model can automatically control the feeding of the threading and the ladder belt, cut off the ladder belt at proper time, push and concentrate the threading of a preset number of blades, achieve real automatic production, reduce manpower use, have high production speed and high efficiency, and are beneficial to mass production and labor cost reduction. The discharge end of the feeding machine head is provided with the rebound prevention component, and the rebound prevention component is used for guiding the discharge end of the blade to deviate from the discharge hole, so that the discharge end of the blade is misplaced with the discharge hole, the rebound of the blade to the feeding machine head after the blade is prevented from touching the retaining wall is achieved, the rebound blocking problem is solved, the production is smoother and simpler, and the production efficiency and the safety are improved. Through the output of first minute wheel and the second minute wheel cooperation control ladder area that rises to this cooperation director, deconcentrator and storage frame have guaranteed that the blade wears smoothly, prevent that the blade from bumping the ladder area, promote the automatic work efficiency and the quality of wearing the machine of taking of blind blade, have also greatly promoted the operational factor and the operability of the automatic machine of wearing of blind blade, accord with industrial utilization.

Description of the drawings:

FIG. 1 is a schematic diagram of a prior art structure;

FIG. 2 is a schematic diagram of the state of motion of the prior art;

FIG. 3 is a schematic structural view of a preferred embodiment of the present utility model;

FIG. 4 is a schematic view of the embodiment of FIG. 3 with an anti-rebound assembly coupled to a feeder head;

FIG. 5 is an exploded view of the anti-recoil assembly structure of the FIG. 4 embodiment;

FIG. 6 is a schematic view of the embodiment of FIG. 4 in operation;

FIG. 7 is a schematic view of the structure of the punching work module in the embodiment of FIG. 3;

FIG. 8 is a schematic view of a portion of the embodiment of FIG. 7;

fig. 9 is an exploded view of the embodiment of fig. 8.

The specific embodiment is as follows:

the conception, specific structure, and technical effects of the present utility model will be further described with reference to the accompanying drawings to fully understand the objects, features, and effects of the present utility model.

It should be noted that, in the description of the present utility model, terms such as "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", and the like indicate directions or positional relationships based on the directions or positional relationships shown in the drawings, which are merely for convenience of description, and do not indicate or imply that the apparatus or elements must have a specific orientation, be constructed and operated in a specific orientation, and thus are not to be construed as limiting the present utility model. Furthermore, the terms "first," "second," and the like, are used for descriptive purposes only and are not to be construed as indicating or implying relative importance.

Referring to fig. 3 to 9, which are schematic structural views of a preferred embodiment of the present utility model, the present utility model relates to an automatic threading machine for a blind blade, which comprises a material distributing and feeding unit 1, a material feeding machine head 2 and a threading unit 3 that are connected together.

The material distributing and feeding unit 1 is provided with a strip-shaped material distributing base 11 and a pushing piece mechanism 12 arranged on the material distributing base 11, and the pushing piece mechanism 12 pushes out the blades stored in the material distributing base 11 one by one. In the figure, a plurality of carrying mechanisms 13 are further arranged on the material separating machine seat 11, the carrying mechanisms 13 are arranged at intervals along the length direction of the material separating machine seat 11 from the discharge end of the sheet pushing mechanism 12, the condition that the sheets are stacked and stored and matched with the sheet pushing mechanism 12 to push the sheets one by one is met, the structure utilizes the existing stack material separating technology to realize sheet separation pushing, and the principle is not repeated here. The feeding machine head 2 is connected to the discharge end of the material distributing and feeding unit 1, and the feeding machine head 2 receives the blades pushed out by the blade pushing mechanism 12 and drives the blades to be sent out through the feeding roller 21; the ejection of compact side of pay-off aircraft nose 2 is equipped with prevents rebound subassembly 22, and the ejection of compact end of this rebound subassembly 22 guide blade deviates from the discharge gate 23 of pay-off aircraft nose to reach and prevent that the blade from bumping and rebound to the feed aircraft nose after stopping the barricade, solve the rebound card material problem. The threading unit 3 is connected to the discharge end of the feeding machine head 2, the threading unit 3 is provided with a strip threading machine seat 31 and a plurality of threading work modules 32 which are arranged on the threading machine seat 31 and are arranged at intervals along the length direction of the threading machine seat, and the threading work modules 32 are used for accurately threading the blades sent out by the feeding machine head 2 into the grid frame of the ladder belt, upwards supporting the blades after threading to stack and timely cutting the rope ladder. The threading work module 32 comprises a mounting seat 321, a guide 322, a deconcentrator 323, a storage rack 324 and a shearing mechanism 325, wherein the guide 322, the deconcentrator 323, the storage rack 324 and the shearing mechanism 325 are arranged on the mounting seat 321, the guide 322 guides the blade to pass through the corresponding grid frame 41 on the ladder belt 4, the deconcentrator 323 is arranged at the downstream of the guide 322, and the deconcentrator 323 guides the ladder belt 4 to output and expand the grid frame 41; the ladder belt expanding frame 326 is arranged on the mounting seat 321, a first expanding wheel 327 and a second expanding wheel 328 are arranged on the ladder belt expanding frame 326, the first expanding wheel 327 and the second expanding wheel 328 are arranged according to the conveying sequence of the ladder belt 4, the first expanding wheel 327 is positioned on the ladder belt expanding frame 326 and rotates around a shaft, the second expanding wheel 328 is rotatably arranged on the ladder belt expanding frame 326 and floats under the guidance of a guide part 3261 provided by the ladder belt expanding frame, and the ladder belt 4 enters a deconcentrator 323 after being output from the second expanding wheel 328; the first expanding wheel 327 and the second expanding wheel 326 cooperate to establish an output state for the ladder belt 4, wherein the output state is that the ladder belt 4 is output according to the size of the grid frame 41; the storage frame 324 is used for supporting and stacking the worn blades upwards, and the shearing mechanism 325 is used for shearing the rope ladder 4 at proper time so as to remove the worn blades in groups.

The automatic threading machine for blind blades of the present embodiment further includes a carrying mechanism 5, and the carrying mechanism 5 is used for removing the stacked blade group on the storage rack 324. The carrying mechanism 5 has a truss 51, a lifting cylinder 52 provided on the truss 51, and a gripper 53 driven to lift by the lifting cylinder 52, and the gripper 53 grips the stacked blade group on the storage rack 324 and moves along with the lifting cylinder 52 and the truss 51 in multiple degrees of freedom. Therefore, automatic carrying is realized, real automatic production is achieved, labor consumption is reduced, production speed is high, efficiency is high, and mass production and labor cost reduction are facilitated.

In the present embodiment, the rebound prevention assembly 22 is a lifter, as shown in fig. 4, 5 and 6, which lifts the discharge end of the blade from the lower side of the discharge direction of the blade. Specifically, the anti-rebound assembly 22 includes a spring 221 and a spring seat 222, the spring 221 is provided with a sloped guide surface 2211, the sloped guide surface 2211 is inclined from bottom to top along the discharging direction of the blade, and the sloped upper end of the sloped guide surface 2211 is higher than the discharging hole 23 of the feeding head. The spring plate seat 222 is fixedly connected with the feeding machine head 2, in the drawing, the spring plate seat 222 is locked and connected to the feeding machine head 2 through the first screw 24, so that the spring plate seat is fixedly connected, and the spring plate seat is convenient to assemble, disassemble and maintain. And the spring plate seat 222 is provided with a U-shaped groove 2221 with an upward opening, the shape and the size of the U-shaped groove 2221 are matched with those of the discharge hole 23, and the U-shaped groove 2221 is communicated and butted with the discharge hole 23 in the discharge direction of the blade so as to guide the blade to output and ensure the subsequent threading (ladder line) work. The spring 221 is formed by bending a sheet, the spring 221 is assembled on the spring seat 222, the inclined guide surface 2211 is embedded in the U-shaped groove 2221, and the inclined upper end of the inclined guide surface 2211 is lower than the height of the left and right side walls of the U-shaped groove 2221. In the drawing, the elastic sheet 221 is further provided with a fixing portion 2212 bent and attached to the elastic sheet seat 222, and the fixing portion 2212 is attached to the elastic sheet seat 222 and locked by the second screw 25. This simple structure, scientific and reasonable, investment cost is low, prevents that rebound subassembly utilizes the shell fragment to prop up the ejection of compact end of top lift blade A of top mode, and the ejection of compact end that reaches the ejection of compact end of blade when leaving the discharge gate can self-adaptation pushes up the ejection of compact end of blade, and guide blade A's ejection of compact end skew discharge gate to give and continuously lift the location, with this ejection of compact rebound that reaches. The height of the rebound prevention component jacking blade not only meets the dislocation of the discharging tail end and the discharging hole of the blade, but also ensures that the threading work is not influenced.

In this embodiment, as shown in fig. 7, 8 and 9, the structural shapes of the first expanding wheel 327 and the second expanding wheel 328 are consistent, the periphery of the first expanding wheel 327 is provided with a plurality of first tooth grooves 3271 arranged at intervals, the periphery of the second expanding wheel 328 is provided with a plurality of second tooth grooves 3281 arranged at intervals, and the spans between the adjacent first tooth grooves 3271 on the first expanding wheel and between the adjacent second tooth grooves 3281 on the second expanding wheel are matched with the length L of the grid frame 41 of the ladder belt 4. In the figure, the lengths of the first tooth groove 3271 and the second tooth groove 3281 in the axial direction are consistent with the length of the transverse line of the ladder belt 4, so that the first expanding pulley 327 and the second expanding pulley 328 are sequentially meshed to connect the ladder belt 4. The ladder belt expanding frame 326 has parallel and opposite support plates 3262, the guide portion 3261 is a long slideway arranged on the support plates 3262, the guide portion 3261 is vertically arranged, and the second expanding pulley 328 is movably clamped with the guide portion 3261 through a mandrel 3282 with a protruding end portion. The guide 322, the wire divider 323 and the storage rack 324 are arranged in sequence according to the passing direction of the blade, and the wire divider 323 is driven by the driver 329 to swing back and forth between a first position and a second position, wherein the first position and the second position are positioned between the guide 322 and the storage rack 324. The storage rack 324 is provided with two support arms 3241 arranged in parallel upwards and a U-shaped storage space 3242 between the two support arms 3241, the two support arms 3241 are provided with supporting material supporting claws 3243, the material supporting claws 3243 are arranged at intervals along the height direction of the support arms 3241, and the lowest material supporting claw 3243 is higher than the deconcentrator 323 in the height direction. The U-shaped storage space 3242 provides avoidance and storage, so that the shutter blades can pass conveniently, and a pushing block 3244 for pushing the worn blades upwards to the material supporting claw 3243 is further arranged on the storage rack 324, and the pushing block 3244 is connected with the telescopic end of the pushing cylinder 3245.

When the device works, the blades penetrate through the ladder belt and penetrate into the U-shaped storage space 3242, then the push block 3244 is driven by the push cylinder 3245, the blades after being penetrated are pushed to the lowest material supporting claw 3243 one by one to be stacked, meanwhile, the ladder belt is driven to move together, power is supplied to the output of the ladder belt, the deconcentrator 323 is driven by the driver 329 to swing back and forth at the first position and the second position, and the deconcentrator is arranged on the lower side of the material supporting claw, so that the ladder belt is pulled and held by the aid of the upper and lower distances and swing, and the situation that the ladder belt is loose and broken is avoided. After a certain number of blades are stacked on the lowest-position material supporting claw, the blades can be driven by the pushing block through the pushing cylinder to push the stacked blades to the higher-position material supporting claw for storage, so that subsequent carrying work can be facilitated.

In this embodiment, the cutting mechanism 325 is disposed at one side of the blade threading direction, the cutting mechanism 325 includes an L-shaped bracket 3251, a first cutting cylinder 3252, a second cutting cylinder 3253, a cutting slide 3254, and a pair of scissors 3255, the L-shaped bracket 3251 is fixed on the mounting base 321, the first cutting cylinder 3252 is positioned on the L-shaped bracket 3251, and a telescopic end of the first cutting cylinder 3252 is connected to the cutting slide 3254, and the cutting slide 3254 in this embodiment is supported by a linear guide rail of the L-shaped bracket 3251, so that the lifting movement is stable and reliable; the second shearing cylinder 3253 and the scissors 3255 are mounted on the shearing slide seat 3254 together, the telescopic end of the second shearing cylinder 3253 is connected with the scissors 3255 through the connecting rod assembly, the connecting rod assembly and the scissors 3255 form a movable quadrilateral structure, and the telescopic end of the second shearing cylinder 3253 drives the scissors 3255 to open and close when in telescopic motion. In operation, the first shear cylinder 3252 drives the shear slide 3254 to move, the second shear cylinder 3253 and the scissors 3255 move together to bring the scissors 3255 closer to the ladder strap, and then the telescoping end of the second shear cylinder 3253 extends to close the scissors 3255 via the linkage assembly, thereby shearing the ladder strap. After shearing, the first shearing cylinder 3252 drives the shearing slide seat 3254 to return, and the telescopic end of the second shearing cylinder 3253 drives the scissors 3255 to open so as to prepare for the next operation of shearing the ladder belt, and timely shearing action is automatically performed in this way.

When the utility model performs the threading action, the blades are sent to the feeding machine head 2 by the blade pushing mechanism 12 of the material distributing and feeding unit 1, the feeding roller 21 in the feeding machine head 2 drives the blades to be sent out to the threading unit 3, the blades are accurately threaded into the grid frame of the ladder belt, after the blades are threaded, the storage frame 324 of the threading unit 3 is used for supporting and stacking the threaded blades upwards, firstly, part of the threaded blades are stacked on the lowest material supporting claw, a certain number of blades are stacked, then the pushing block is driven by the pushing cylinder to push the stacked blades together to the higher material supporting claw for storage, at the moment, the shearing mechanism 325 shears the rope ladder 4 in time, so that the carrying mechanism 5 can shift the stacked blades on the storage frame 324 out in groups, and the blades can also be directly sent to the next procedure, and the continuous threading action is automatically performed in the mode.

The present utility model has been described in detail with reference to the embodiments, but it is to be understood that the utility model is not limited to the embodiments, and is intended to be interpreted as illustrative only, and is not to be construed as limiting the scope of the utility model.

Claims

1. An automatic tape threading machine for a blind blade is characterized by comprising the following components:

the device comprises a material distribution feeding unit (1), wherein the material distribution feeding unit (1) is provided with a strip-shaped material distribution base (11) and a pushing mechanism (12) arranged on the material distribution base (11), and the pushing mechanism (12) pushes out blades stored in the material distribution base (11) one by one;

the feeding machine head (2) is connected to the discharging end of the material distributing and feeding unit (1), and the feeding machine head (2) receives the blades pushed out by the pushing mechanism (12) and drives the blades to be sent out through the feeding roller (21); the discharging side of the feeding machine head (2) is provided with an anti-rebound component (22), and the discharging tail end of the guide blade of the anti-rebound component (22) deviates from a discharging hole (23) of the feeding machine head;

the threading unit (3), the threading unit (3) is connected to the discharge end of the feeding machine head (2), the threading unit (3) is provided with a strip threading machine seat (31) and a plurality of threading working modules (32) which are arranged on the threading machine seat (31) and are arranged at intervals along the length direction of the threading machine seat, and the threading working modules (32) are used for accurately threading the blades sent out by the feeding machine head (2) into the grid frame of the ladder belt, supporting the blades after threading upwards to stack and cutting the rope ladder at proper time; the threading work module (32) comprises a mounting seat (321), a guide (322), a deconcentrator (323), a storage rack (324) and a shearing mechanism (325), wherein the guide (322) is arranged on the mounting seat (321), a blade is guided by the guide (322) to penetrate through a corresponding grid frame (41) on the ladder belt (4), the deconcentrator (323) is arranged at the downstream of the guide (322), and the deconcentrator (323) is used for guiding the ladder belt (4) to output and expand the grid frame (41); the elevator belt expanding device comprises an installation seat (321), wherein the elevator belt expanding frame (326) is installed on the installation seat (321), a first expanding wheel (327) and a second expanding wheel (328) are arranged on the elevator belt expanding frame (326), the first expanding wheel (327) and the second expanding wheel (328) are arranged according to the conveying sequence of an elevator belt (4), the first expanding wheel (327) is positioned on the elevator belt expanding frame (326) and rotates around a shaft, the second expanding wheel (328) is rotatably arranged on the elevator belt expanding frame (326) and floats under the guidance of a guide part (3261) provided by the elevator belt expanding frame, and the elevator belt (4) enters a deconcentrator (323) after being output from the second expanding wheel (328); the first expanding wheel (327) and the second expanding wheel (328) cooperate to establish an output state for the ladder belt (4), wherein the output state is that the ladder belt (4) is output according to the size of the grid frame (41) one by one; the storage frame (324) is used for supporting and stacking the worn blades upwards, and the shearing mechanism (325) is used for shearing the ladder belt (4) timely so as to remove the worn blades in groups.

2. An automatic threading machine for shutter blades according to claim 1, characterized in that it further comprises a handling mechanism (5), the handling mechanism (5) being adapted to remove the stacked groups of blades on the storage rack (324); the conveying mechanism (5) is provided with a truss (51), a lifting cylinder (52) arranged on the truss (51) and a grabbing claw (53) driven by the lifting cylinder (52) to lift, wherein the grabbing claw (53) grabs a stacked blade group on the storage rack (324) and moves along with the lifting cylinder (52) and the truss (51) in multiple degrees of freedom.

3. An automatic threading machine for shutter blades according to claim 1, characterized in that said anti-rebound assembly (22) is a lifter, lifting the discharge extremity of the blade from the lower side of the blade discharge direction.

4. A shutter blade automatic threading machine according to claim 3, characterized in that the rebound prevention assembly (22) comprises at least a spring piece (221), wherein the spring piece (221) is provided with a slant guiding surface (2211), the slant guiding surface (2211) inclines from bottom to top along the discharging direction of the blade, and the slant upper end of the slant guiding surface (2211) is higher than the discharging hole (23) of the feeding machine head.

5. The automatic threading machine for the blind blades according to claim 4, wherein the rebound prevention assembly (22) further comprises a spring piece seat (222), the spring piece seat (222) is fixedly connected with the feeding machine head (2), a U-shaped groove (2221) with an upward opening is arranged on the spring piece seat (222), the shape and the size of the U-shaped groove (2221) are matched with those of the discharge hole (23), and the U-shaped groove (2221) is communicated and butted with the discharge hole (23) in the blade discharge direction; the elastic sheet (221) is assembled on the elastic sheet seat (222), the inclined guide surface (2211) is embedded in the U-shaped groove (2221), and the inclined upper tail end of the inclined guide surface (2211) is lower than the height of the left side wall and the right side wall of the U-shaped groove (2221).

6. The automatic threading machine for the blind blades according to claim 1, wherein the first expanding wheel (327) and the second expanding wheel (328) are identical in structural shape, a plurality of first tooth grooves (3271) which are arranged at intervals are arranged on the periphery of the first expanding wheel (327), a plurality of second tooth grooves (3281) which are arranged at intervals are arranged on the periphery of the second expanding wheel (328), and the span between the adjacent first tooth grooves (3271) on the first expanding wheel and the span between the adjacent second tooth grooves (3281) on the second expanding wheel are matched with the length L of a grid frame (41) of the ladder belt (4).

7. The automatic threading machine for the blind blades according to claim 1, wherein the ladder tape expansion frame (326) is provided with parallel and opposite supporting plates (3262), the guiding part (3261) is a long slideway arranged on the supporting plates (3262), the guiding part (3261) is vertically arranged, and the second expansion wheel (328) is movably clamped with the guiding part (3261) through a mandrel (3282) with a protruding end part.

8. The automatic threading machine for shutter blades according to claim 1, characterized in that said guide (322), wire divider (323) and storage rack (324) are arranged one after the other according to the direction of travel of the blades, the wire divider (323) being driven by a drive (329) to oscillate back and forth between a first position and a second position, which are located between the guide (322) and the storage rack (324); the storage rack (324) is provided with two support arms (3241) which are upwards arranged in parallel and a U-shaped storage space (3242) between the two support arms (3241), the two support arms (3241) are provided with matched material supporting claws (3243), the material supporting claws (3243) are arranged at intervals along the height direction of the support arms (3241), and the lowest material supporting claw (3243) is higher than the deconcentrator (323) in the height direction; the U-shaped storage space (3242) is used for allowing the blades to pass through, a pushing block (3244) used for pushing the worn blades upwards to the material supporting claw (3243) is further arranged on the storage frame (324), and the pushing block (3244) is connected with the telescopic end of the pushing cylinder (3245).

9. The automatic tape threading machine for the blind blade according to claim 1, wherein the cutting mechanism (325) is arranged on one side of the tape threading direction of the blade, the cutting mechanism (325) comprises an L-shaped support (3251), a first cutting cylinder (3252), a second cutting cylinder (3253), a cutting sliding seat (3254) and a pair of scissors (3255), the L-shaped support (3251) is fixed on the mounting seat (321), the first cutting cylinder (3252) is positioned on the L-shaped support (3251), the telescopic end of the first cutting cylinder (3252) is connected with the cutting sliding seat (3254), the second cutting cylinder (3253) and the pair of scissors (3255) are mounted on the cutting sliding seat (3254) together, the telescopic end of the second cutting cylinder (3253) is connected with the pair of scissors (3255) through a connecting rod assembly, and the connecting rod assembly and the pair of scissors (3255) form a movable quadrilateral structure, so that the telescopic end of the second cutting cylinder (3253) drives the pair of scissors (3255) to open and close.