A pull-tab feeding device

Abstract

The present application provides a slider feeding device, which includes a frame; a storage hopper for containing sliders with plug blocks inserted therein; a conveying module for magnetically adsorbing the plug blocks and conveying the sliders along a conveyor belt; a screening mechanism for screening the sliders; a positioning and discharging mechanism for disengaging the sliders from the conveying module; an identification and steering mechanism for adjusting each slider to keep each slider moving in the same direction on a feeding track; a block removing mechanism for separating and disengaging the plug block inserted in the slider from the middle slider; a plug block discharge pipe for conveying the disengaged plug blocks; and a plug block hopper for recovering the disengaged plug blocks. The present application realizes the automatic and efficient feeding of sliders, especially sliders with ropes and webbing, significantly improves the feeding efficiency, and reduces the labor cost.

Description

Technical Field

[0001] This application relates to the technical field of slider feeding equipment, and more specifically, to a slider feeding device. Background Art

[0002] Currently, the feeding method of zipper sliders on the market generally uses a vibrating bowl feeder for screening and feeding. The slider products that cannot be fed by the vibrating bowl are mainly divided into three categories: the first category is sliders with light colors that are easy to dirty the surface; the second category is sliders with a shiny surface that are easy to scratch the surface; the third category is sliders with ropes and webbing added to the pull tabs.

[0003] For the first and second types of slider products, the problem is solved by using the film coating method. However, for the feeding of the third type of slider with ropes and webbing on the pull tab, the current feeding methods mainly include manual feeding and vibrating bowl feeding. Manual feeding has low efficiency and high labor costs, and feeding by vibrating bowl cannot be applied to a variety of slider products and cannot meet the production requirements. Summary of the Invention

[0004] This application provides a slider feeding device, which solves the above technical problems, realizes the automatic feeding of sliders, and significantly improves the feeding efficiency of sliders.

[0005] This application provides a slider feeding device, including:

[0006] A frame;

[0007] A storage hopper for containing sliders inserted with plug blocks;

[0008] A conveying module installed inside the frame for magnetically adsorbing the plug blocks and conveying the sliders along the conveyor belt;

[0009] A screening mechanism for screening sliders;

[0010] A positioning and discharging mechanism installed inside the frame for removing the sliders from the conveying module;

[0011] An identification and turning mechanism installed inside the frame for adjusting each slider to keep each slider transmitting in the same direction on the feeding track;

[0012] A block removing mechanism installed inside the frame for separating and removing the plug blocks inserted in the sliders from the sliders;

[0013] A plug block discharge pipe for conveying the removed plug blocks;

[0014] A plug block hopper for recovering the removed plug blocks.

[0015] Preferably, an aluminum profile, a synchronous pulley fixing member, a conveyor belt, a plurality of magnet seats fixedly installed on the conveyor belt for adsorbing plug blocks, a synchronous pulley, a stepping motor for driving the synchronous pulley to operate, a module support, and a module driving motor installed on the module support.

[0016] Preferably, the screening mechanism includes a right fixing plate of the screening mechanism and a left fixing plate of the screening mechanism arranged in parallel, a connecting shaft and a driving brush wheel disposed between the right fixing plate of the screening mechanism and the left fixing plate of the screening mechanism, a scraping plate installed on the connecting shaft, a clockwork spring seat installed at one end of the connecting shaft and a retaining sleeve connected to the other end, a scraping blade installed at the top of the scraping plate, and the driving brush wheel is connected to a brush driving motor through a synchronous belt and a brush coaxial pulley.

[0017] Preferably, the positioning and material removing mechanism includes a cylinder and a limiting plate installed at the bottom of the cylinder. The cylinder is arranged perpendicular to the vertical direction of the conveyor belt. When the magnet seat moves to the limiting plate, the cylinder drives the limiting plate to stick to the conveyor belt to limit the upward movement of the magnet seat.

[0018] Preferably, the identification and steering mechanism includes a material pulling cylinder, a track push pin, a reverse rotating shaft, a steering motor, a material pushing cylinder, a material pushing rod, a rotating motor induction piece, an origin positioning photoelectric switch, a rotating motor fixing block, and a material pulling cylinder fixing seat;

[0019] The material pulling cylinder pushes the material at the feeding end of the L-shaped discharge guide rail into the reverse rotating shaft through the track push pin, identifies the front and back of the material by identifying the pull head cap through a sensor, adjusts the direction of the pull head by rotation, the steering motor drives the reverse rotating shaft to rotate 90°, the track on the reverse rotating shaft is collinear with the discharge end track of the L-shaped discharge guide rail, and the material pushing cylinder drives the material pushing rod to push the material out of the reverse rotating shaft and into the discharge track of the L-shaped discharge guide rail.

[0020] Preferably, the block removing mechanism includes a block removing push rod and a block removing cylinder for driving the block removing push rod to extend to remove the plug block from the pull head.

[0021] Preferably, a turning plate is installed at the bottom of the storage hopper.

[0022] Preferably, a hopper opening and closing mechanism is connected between the turning plate and the frame.

[0023] Preferably, the hopper opening and closing mechanism is specifically a driving cylinder or a driving oil cylinder.

[0024] Preferably, a cover plate is provided outside the screening mechanism.

[0025] The pull tab feeding device provided by this application includes a frame, a storage hopper, a conveying module, a positioning and material removing mechanism, an identification and steering mechanism, a block removing mechanism, a plug block discharge pipe, a plug block hopper, and a storage hopper. During the operation of the conveying module, steel balls on the plug block are adsorbed, thereby driving the pull tab with the plug block inserted in the storage hopper to be transported forward. The pull tabs are screened by a screening mechanism to remove the pull tabs with non-conforming postures and select the pull tabs with conforming postures. The pull tab materials are accurately positioned at the positioning and material removing mechanism and then removed from the conveying module. The identification and steering mechanism identifies the front and back of the materials by identifying the pull tab cap, and adjusts the direction of the pull tab after judgment and then outputs it. The block removing mechanism separates and removes the plug block from the pull tab, and the plug block falls into the plug block hopper through the plug block discharge pipe, and the pull tab enters the feeding track of the docking device.

[0026] The structure of this application is compact and the layout is reasonable. It can accurately and stably grasp the zipper heads pre-installed with plug blocks, especially the pull tabs with ropes or webbing, realizing the automatic feeding of such products and similar products, significantly improving the feeding efficiency, reducing the labor cost, and making the production rhythm stable and controllable. Description of the Drawings

[0027] In order to more clearly illustrate the technical solutions in the embodiments of this application or the prior art, the following will briefly introduce the drawings required to be used in the description of the embodiments or the prior art. Obviously, the drawings in the following description are only the embodiments of this application. For those of ordinary skill in the art, other drawings can also be obtained according to the provided drawings without creative efforts.

[0028] Figure 1 Schematic structural diagram of the pull tab feeding device provided by a specific embodiment of this application;

[0029] Figure 2 Internal structural diagram of the pull tab feeding device provided by a specific embodiment of this application;

[0030] Figure 3 Schematic structural diagram of the magnet seat provided by a specific embodiment of this application;

[0031] Figure 4 For Figure 2 Schematic structural diagram from another angle;

[0032] Figure 5 For Figure 4 Front view;

[0033] Figure 6 For Figure 4 Enlarged view of part A in

[0034] Figure 7 For Figure 4 Side view;

[0035] Figure 8 is Figure 5 an enlarged view of part B in

[0036] Figure 9 is Figure 7 an enlarged view of part C in

[0037] Figure 10 and Figure 11 are structural schematic diagrams of the recognition steering mechanism and the block removal mechanism provided by specific embodiments of the present application. Specific Embodiments

[0038] Next, the technical solutions in the embodiments of the present application will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present application. Obviously, the described embodiments are only a part of the embodiments of the present application, rather than all the embodiments. Based on the embodiments in the present application, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present application.

[0039] To enable those skilled in the art of the present technology to better understand the solution of the present application, the present application will be further described in detail below in conjunction with the accompanying drawings and specific embodiments.

[0040] Please refer to Figure 1 and Figure 2 , Figure 1 is a structural schematic diagram of the slider feeding device provided by a specific embodiment of the present application; Figure 2 is an internal structural schematic diagram of the slider feeding device provided by a specific embodiment of the present application.

[0041] The present application provides a slider feeding device, which mainly includes a frame 1, a storage hopper 2, a conveying module 3, a screening mechanism 4, a positioning and material removing mechanism 5, a recognition steering mechanism 6, a block removal mechanism, a plug block discharge pipe 8, and a plug block hopper 9.

[0042] The slider is pre-inserted with a plug block with an internal steel ball. During the transmission process, the conveying module 3 strongly magnetically attracts the slider with the plug block inserted. The strong magnet is fixed on the conveyor belt, and the slider products are continuously sucked through the transmission of the conveyor belt; the slider attracted by the strong magnet is pushed into the guide rail through the positioning and material removing mechanism 5; the slider is adjusted by the direction steering mechanism 6 to ensure that the direction of the slider on the feeding track is consistent; the plug block already inserted on the slider is removed therefrom and separated from the slider through the block removal mechanism; the removed plug blocks are recycled through the plug block discharge pipe 8 and the plug block hopper 9.

[0043] Refer to Figure 2 . The slider material is transported along the Figure 2 transportation direction indicated by the arrow in

[0044] The plug block of the conveying module 3 that adsorbs the slider drives the slider to be conveyed upward. The screening mechanism 4 screens the passing sliders, eliminates the sliders with non-conforming postures, and screens out the sliders with conforming postures. The slider material is accurately positioned by the positioning and discharging mechanism 5 and disengages from the conveying module 3. The identification and steering mechanism 6 identifies the front and back of the material by identifying the slider cap, adjusts the direction of the slider after judgment and then outputs it. The demounting block mechanism separates and disengages the plug block from the slider, and the plug block falls into the plug block hopper 9 through the plug block discharge pipe 8, and the slider enters the feeding track of the docking device.

[0045] The core of this application lies in that before the assembly of the webbing rope, a plug block is inserted into the slider (completed by the plug block assembly machine), then it is magnetically transmitted, and then the slider is screened, the direction of the slider is adjusted, the plug block is separated, and the slider is conveyed to the threading machine track, realizing the automatic and batch feeding of the zipper head in the middle link of production, especially for the zipper heads of ropes and webbings, which is more efficient and fully realizes the automatic operation of the slider feeding process.

[0046] According to a specific embodiment of this application, an upper sealing plate 10 is installed on the top of the frame 1, and sealing plates are installed on the left and right sides 11, the back and the bottom. In the middle of the inner side of the upper sealing plate 10 on the top of the frame 1, a bracket fixing plate 12 is installed. The conveying module 3 is provided with a screening mechanism 4, a positioning and discharging mechanism 5, an identification and steering mechanism 6, a demounting block mechanism and a plug block discharge pipe 8. The conveying module 3 is installed inside the frame 1 through the bracket fixing plate 12. In addition, universal wheels 15 are installed at the four-foot positions at the bottom of the frame 1 to support the transportation and stable locking of the frame 1. In addition, an operation sealing plate 13 is provided in the middle of the frame 1, and a plug block outlet is provided thereon. The lower plug block hopper 9 receives the outlet for recycling the disengaged plug block. In addition, two electrical boxes 14 and a feeding storage hopper 16 are installed on the bottom partition of the frame 1. The electrical box 14 is used to supply power to electrical equipment, and the feeding storage hopper 16 is used to store semi-finished products.

[0047] Reference Figure 3 and Figure 4 , Figure 3 is the structural schematic diagram of the magnet seat provided by the specific embodiment of this application; Figure 4 is Figure 2 the structural schematic diagram from another angle of

[0048] According to a specific embodiment of the present application, the conveying module includes an aluminum profile, a synchronous pulley fixing member, a conveyor belt 301, a plurality of magnet seats 302, a stepping motor 303, a synchronous pulley 304, a module bracket, and a module driving motor 305. Each magnet seat 302 is evenly arranged in the transmission direction of the conveyor belt 301. The magnet seat 302 has the same width as the conveyor belt 301 and includes a magnet base 3021 and a magnet 3022. The magnet base 3021 is a plate-like structure, and the magnet 3022 is horizontally installed on the magnet base 3021 and is installed on the conveyor belt 301 through the magnet base 3021 and a connecting member. During transportation, the magnet 3022 adsorbs the plug block of the pull head to drive the pull head to be transmitted.

[0049] The storage hopper and the screening mechanism are both fixed on both sides of the aluminum profile through connecting members. The module driving motor 305 is transmitted to the synchronous pulley 304 through the conveyor belt 301. The synchronous pulley 304 is connected to the conveyor belt 301 through a shaft and drives the conveyor belt 301 to run upward.

[0050] Reference Figure 4 、 Figure 5 and Figure 6 wherein, Figure 5 is Figure 4 the front view of Figure 6 is Figure 4 the enlarged view of part A in

[0051] According to a specific embodiment of the present application, the material screening mechanism 4 includes a scraping plate 401, a brush driving motor 402, a brush wheel 403, a connecting shaft 404, a retaining sleeve 405, a right fixing plate 406 of the material screening mechanism, a spring seat 407, a left fixing plate 408 of the material screening mechanism, a brush coaxial synchronous pulley 409, and a scraping blade 410.

[0052] The bottom of the scraping plate 401 is fixedly connected to the connecting shaft 404 through a thread. The left end of the connecting shaft 404 is connected to the driving scraper hairspring seat 404. The right end of the connecting shaft 404 is installed on the right fixing plate 406 of the material screening mechanism through the retaining sleeve 405, and the axial displacement of the connecting shaft 404 is restricted by the retaining sleeve 405. The spring seat 407 is fixedly connected to the left fixing plate 408 of the material screening mechanism through a thread. The brush wheel 403 is coaxially connected to the brush coaxial synchronous pulley 409. The brush driving motor 402 drives the brush coaxial synchronous pulley 409 to rotate through a synchronous belt, thereby driving the brush wheel 403 to rotate. In addition, a scraping blade 410 is installed at the top of the scraping plate 401. When the pull head passes through the scraping plate 401, the scraping blade 410 scrapes off the uneven pull heads adsorbed on the magnet seat 302, and can pull down the products that are not firmly adsorbed by pressing the pull tab, and then passes through the brush wheel 403 for brushing, making the pull head smoother.

[0053] To prevent external interference, a cover plate can be installed on the outer wall of the screening mechanism 4 to form a closed structure on all sides. While preventing interference, it can also prevent external dust or foreign objects from contaminating the pull tab.

[0054] Reference Figure 5 and Figure 8 , wherein, Figure 8 is Figure 5 an enlarged view of part B in

[0055] According to a specific embodiment of the present application, the positioning and material removing mechanism 5 includes a cylinder 501, a limiting plate 502, a fixed main board 503, a pushing cylinder 504, a pushing rod 505, an L-shaped discharging guide rail 506, and a left fixing plate 507.

[0056] Both the storage hopper 2 and the screening mechanism 4 are fixed on both sides of the aluminum profile through connecting pieces. The pushing cylinder 504 and the L-shaped discharging guide rail 506 are fixed on the fixed main board 503 by threaded connection. The fixed main board 503 is fixed on the aluminum profile through the left fixing plate 507, and the right fixing plate 406 and the left fixing plate 408 of the symmetric screening mechanism.

[0057] When the magnet seat 502 rises close to the limiting plate 502, the cylinder 501 drives the limiting plate 502 to stick to the conveyor belt 301, restricting the upward movement of the magnet seat 302 and achieving precise positioning in cooperation with the cylinder. Specifically, when the pull tab material is transported to the positioning and material removing mechanism 5, after the magnet seat 302 is precisely positioned by the limiting plate 502, the pushing cylinder 505 drives the pushing rod 505 to extend, and all the materials sucked on the magnet seat 302 are pushed into the L-shaped discharging guide rail 506.

[0058] Reference Figure 7 and Figure 9 , Figure 7 is Figure 4 a side view of Figure 9 is Figure 7 an enlarged view of part C in

[0059] According to a specific embodiment of the present application, the identification and steering mechanism 6 includes a pulling cylinder 601, an orbital push pin 602, a reverse rotating shaft 603, a steering motor 604, a pushing cylinder 605, a pushing rod 606, a rotating motor induction piece 607, an origin positioning photoelectric switch 608, a rotating motor fixing block 609, and a pulling cylinder fixing seat 610.

[0060] The pulling cylinder 601 pushes the material at the feeding end of the L-shaped discharging guide rail 506 into the reverse rotating shaft 603 through the rail push pin 602. The sensor identifies the pull head cap to distinguish the front and back of the material. After judgment, the direction of the pull head is adjusted by rotation. After the steering motor 604 drives the reverse rotating shaft 603 to rotate 90° clockwise or counterclockwise, the commutation is realized. The small section of the rail on the reverse rotating shaft 603 is in line with the discharging end rail of the L-shaped discharging guide rail 506. The pushing cylinder 605 drives the push rod 606 to push the material out of the reverse rotating shaft 603 and into the discharging rail of the L-shaped discharging guide rail 506.

[0061] In addition, it also includes a rotating motor, a rotating motor induction piece 607, an origin positioning photoelectric switch 608, a rotating motor fixing block 609 and a pulling cylinder fixing seat 610. The rotating motor induction piece 607 is used to find the origin of the motor. The origin positioning photoelectric switch 608 is used to detect the steering position. The rotating motor fixing block 609 and the pulling cylinder fixing seat 610 fix the steering motor 604 and the pulling cylinder 601 on the mounting frame respectively. In addition, a synchronous conveyor belt positioning inductor 611 is also arranged on the mounting frame. The movement position is detected through the synchronous conveyor belt positioning inductor 611. When it is detected that the magnetic seat 3022 moves to the preset position, the pushing cylinder 505 is controlled to act. This preset position is usually set to be close to the limit plate 502.

[0062] Reference Figure 10 and Figure 11 , are the structural schematic diagrams of the steering mechanism and the demounting block mechanism.

[0063] According to a specific embodiment of the present application, the demounting block mechanism includes a demounting block push rod 701 and a demounting block cylinder 702 used to drive the demounting block push rod 701 to extend and push the plug block out of the pull head. Both the demounting block push rod 701 and the demounting block cylinder 702 are arranged above the L-shaped discharging guide rail 506. When the demounting block cylinder 702 extends, the pull head and the plug block are separated through the demounting block push rod 701. The ejected plug block falls into the plug block hopper 9 through the plug block discharging pipe 8, and the pull head enters the feeding track of the docking device.

[0064] According to a specific embodiment of the present application, a turning plate is installed on the side wall and / or bottom of the storage hopper 2. The turning plate can be turned and opened under an external force so as to convey the material in the storage hopper 2 to the discharging hopper 16.

[0065] Optionally, a hopper opening and closing mechanism 17 is connected between the turning plate and the storage hopper 2. The hopper opening and closing mechanism 17 can automatically control the opening and closing of the turning plate through a controller, or can independently control the opening and closing action of the turning plate.

[0066] The hopper opening and closing mechanism 17 is specifically a driving cylinder or a driving oil cylinder.

[0067] When applying the pull head feeding device of the present application, the feeding process is as follows:

[0068] Step 1: The pull tabs with plug blocks are stacked in the storage hopper 2. The conveyor belt 301 transports and drives upward, and the magnet seat 302 installed on the conveyor belt 301 attracts the steel balls on the plug blocks, so that the pull tabs are transported upward, and the pull tabs (ropes, webbing, etc.) of the pull tabs are downward due to gravity.

[0069] Step 2: When the pull tabs are transported upward through the screening mechanism 4, the materials with conforming postures can pass through normally, and the materials with non-conforming postures are removed.

[0070] Step 3: The pull tab materials are transported to the positioning and material removal mechanism 5. After the magnet seat 302 is accurately positioned by the limit plate 502, the pushing cylinder 504 drives the pushing rod 505 to extend, and all the materials sucked on the magnet seat 302 are pushed into the L-shaped discharge guide rail 506.

[0071] Step 4: The pulling cylinder 601 pushes the materials at the feeding end of the L-shaped discharge guide rail 506 into the reverse rotating shaft 603 through the track push pin 602. The front and back of the materials are identified by the sensor to recognize the pull tab cap. After judgment, the direction of the pull tab is adjusted by rotation. After the steering motor 604 drives the reverse rotating shaft 603 to rotate 90° clockwise or counterclockwise, the small section of the track on the reverse rotating shaft 603 is in line with the discharge end track of the L-shaped discharge guide rail 506. The pushing cylinder 504 drives the pushing rod 505 to push the materials out of the reverse rotating shaft 603 and into the discharge track of the L-shaped discharge guide rail 506.

[0072] Step 5: The block removal push rod 701 extends, and the pull tab is separated from the plug block through the block removal push rod 701. The plug block falls into the plug block hopper 9 through the plug block discharge pipe 8, and the pull tab product enters the feeding track of the docking device.

[0073] It should be noted that in this specification, relational terms such as first and second are only used to distinguish one entity from several other entities, and do not necessarily require or imply any actual relationship or order between these entities.

[0074] The above has introduced the pull tab feeding device provided by the present application in detail. Specific examples are used in this article to elaborate on the principle and implementation mode of the present application. The description of the above embodiments is only used to help understand the method and its core idea of the present application. It should be pointed out that for those of ordinary skill in the art in this technical field, without departing from the principle of the present application, several improvements and modifications can be made to the present application, and these improvements and modifications also fall within the protection scope of the claims of the present application.

Claims

1. A pull head feeding device, characterized in that, Comprising: Frame (1); Material storage hopper (2) for containing pull tabs with plug blocks inserted; Conveyor module (3), installed inside the frame (1), for magnetically adsorbing the plug blocks and conveying the pull tabs along the conveyor belt. The conveyor module includes aluminum profiles and synchronous wheel fixing parts, conveyor belt (301), several magnet seats (302) fixedly installed on the conveyor belt (301) for adsorbing the plug blocks, synchronous wheel (304), stepper motor (303) for driving the synchronous wheel (304) to operate, module bracket, and module driving motor (305) installed on the module bracket; Screening mechanism (4) for screening the pull tabs. The screening mechanism includes a right fixing plate (406) and a left fixing plate (408) of the screening mechanism arranged in parallel, connecting shaft (404) and driving brush wheel (403) arranged between the right fixing plate (406) and the left fixing plate (408) of the screening mechanism. Scraping plate (401) is installed on the connecting shaft (404). One end of the connecting shaft (404) is installed with a hairspring spring seat (407) and the other end is connected to a retaining sleeve (405). A scraping blade (410) is installed at the top of the scraping plate (401). The driving brush wheel (403) is connected to a brush driving motor (402) through a synchronous belt and a brush coaxial synchronous wheel (409); Positioning and discharging mechanism (5), installed inside the frame (1), for disengaging the pull tabs from the conveyor module (3). The positioning and discharging mechanism includes a cylinder (501) and a limiting plate (502) installed at the bottom of the cylinder (501). The cylinder (501) is arranged perpendicular to the vertical direction of the conveyor belt (301). When the magnet seat (302) moves to the limiting plate (502), the cylinder (501) drives the limiting plate (502) to stick to the conveyor belt (301) to limit the upward movement of the magnet seat (302); Identification and steering mechanism (6), installed inside the frame (1), for adjusting each pull tab to keep each pull tab transmitted in the same direction on the feeding track; Block removing mechanism, installed inside the frame (1), for separating and removing the plug blocks inserted in the pull tabs from the pull tabs; Plug block discharge pipe (8) for conveying the removed plug blocks; Plug block hopper (9) for recovering the removed plug blocks.

2. The puller feeding device according to claim 1, wherein The identification and steering mechanism includes a pulling cylinder (601), a track push pin (602), a reverse rotating shaft (603), a steering motor (604), a pushing cylinder (605), a pushing rod (606), a rotating motor induction piece (607), an origin positioning photoelectric switch (608), a rotating motor fixing block (609), and a pulling cylinder fixing seat (610); The pulling cylinder (601) pushes the material at the feeding end of the L-shaped discharging guide rail (506) into the reverse rotating shaft (603) through the track push pin (602). The front and back of the material are identified by a sensor recognizing the pull head cap, and the direction of the pull head is adjusted by rotation. The steering motor (604) drives the reverse rotating shaft (603) to rotate 90°. The track on the reverse rotating shaft (603) is collinear with the discharging end track of the L-shaped discharging guide rail (506). The pushing cylinder (605) drives the pushing rod (606) to push the material out of the reverse rotating shaft (603) and into the discharging track of the L-shaped discharging guide rail (506).

3. The puller feeding device according to claim 1 or 2, characterized in that, The block removing mechanism includes a block removing push rod (701) and a block removing cylinder (702) for driving the block removing push rod (701) to extend and remove the plug block from the pull head.

4. The puller feeding device according to claim 1 or 2, characterized in that, A turning plate is installed at the bottom of the storage hopper (2).

5. The puller feeding device according to claim 4, characterized in that, A hopper opening and closing mechanism (17) is connected between the turning plate and the frame.

6. The puller feeding device according to claim 5, wherein, The hopper opening and closing mechanism (17) is specifically a driving cylinder or a driving oil cylinder.

7. The puller feeding device according to claim 1, characterized in that, A cover plate is arranged outside the screening mechanism (4).

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