An automatic feeding device for spring pullers

Abstract

The present invention relates to the field of zipper machinery, and specifically discloses an automatic feeding device for spring sliders, which includes a pushing mechanism, a feeding mechanism, a pushing piece mechanism, and a die mechanism. The pushing mechanism is used to push the sliders one by one onto the feeding mechanism. The feeding mechanism is used to limit and hold the sliders one by one for adjusting the tab state of the sliders and transporting them to the die mechanism. The pushing piece mechanism is used to adjust the tab of the slider limited on the feeding mechanism to the unlocking state. The die mechanism is used to limit and place the sliders for subsequent processes. A slider model groove is provided on the die mechanism for placing the sliders transported from the feeding mechanism. The feeding mechanism includes a receiving port that can be movably connected to the output end of the pushing mechanism. The pushing piece mechanism includes a tab movable push rod that can push the tab corresponding to the receiving port. This device can adjust the spring slider to the unlocking state and maintain the unlocking state during transportation for threading work, so as to solve the problem that the existing automatic threading machine cannot perform automatic threading of spring sliders.

Description

Technical Field

[0001] The present invention relates to the field of zipper machinery, and particularly to a mechanical device for automatically feeding spring sliders in zipper machinery. Background Art

[0002] As one of many sliders, the basic function of a spring slider is the same as that of an ordinary slider. The difference is that the spring slider has the function of automatically locking the slider on the zipper to prevent easy unzipping. Therefore, when opening and closing the zipper with this spring slider, an unlocking action needs to be performed on the slider body through the pull tab. Usually, the pull tab on the slider needs to be rotated 90 degrees (i.e., the pull tab is perpendicular to the surface of the slider, or approaches 90 degrees, hereinafter directly described as 90 degrees) to unlock, and then it can penetrate the zipper and slide freely on the zipper. For example, Figure 1 is in the locked state. In this state, the spring slider cannot penetrate the zipper and cannot be slid, as shown in Figure 2 is in the unlocked state. At this time, the spring slider can penetrate the zipper and slide freely on the zipper.

[0003] During the zipper production process, to insert the spring slider into the zipper, the pull tab must first be rotated to the unlocked state before it can be inserted. In manual zipper threading work, manual direct operation is required, but manual operation has the problem of low efficiency. In mechanical automated zipper threading work that can greatly improve efficiency, some pull tabs of spring sliders can achieve the function of maintaining the unlocked state, that is, their pull tabs can maintain the 90-degree state when adjusted to the 90-degree state. Such spring sliders that can maintain the state only need to be adjusted once in the automatic threading and feeding of the slider to perform subsequent conveying and threading work. However, some spring sliders are not easily able to reach the unlocked state or even do not have the effect of maintaining the unlocked state. Their pull tabs may easily be in or return to the locked state, and external intervention is required to adjust them to the unlocked state before subsequent threading work can be carried out.

[0004] For those spring sliders that can maintain the unlocked state but have not been adjusted to the unlocked state once in the automatic threading and feeding, as well as some spring sliders with poor unlocking state maintenance or without the function of maintaining the unlocked state, they cannot be effectively and smoothly, or even cannot be automatically threaded in some existing automatic threading machines. This has hindered the improvement of the automatic threading efficiency of such spring sliders, and there has been no good solution in the industry. Summary of the Invention

[0005] The purpose of the present invention is to provide a spring slider automatic feeding device that can adjust the spring slider to the unlocked state and maintain the unlocked state for conveying and threading work.

[0006] To achieve the above object, the technical solution of the present invention is: an automatic feeding device for spring pullers, including a pushing mechanism, a feeding mechanism, a pushing piece mechanism and a die mechanism. The pushing mechanism is used to push the pullers one by one onto the feeding mechanism. The feeding mechanism is used to limit and hold the pullers one by one for adjusting the tab state of the pullers and transporting them to the die mechanism. The pushing piece mechanism is used to adjust the tab of the puller limited on the feeding mechanism to the unlocking state. The die mechanism is used to limit and place the puller for subsequent processes. A puller model groove is provided on the die mechanism for placing the puller transported from the feeding mechanism. The feeding mechanism includes a receiving port that can move and can be correspondingly connected to the output end of the pushing mechanism. The pushing piece mechanism includes a tab movable push rod that can push the tab corresponding to the receiving port.

[0007] The feeding mechanism includes a feeding fixed mounting seat, a guiding sliding structure arranged on the feeding fixed mounting seat, a feeding driving cylinder, and a receiving component arranged on the guiding sliding structure. The guiding sliding structure includes a guide rail fixedly arranged on the feeding fixed mounting seat and a slider sliding on the guide rail. The piston rod of the feeding driving cylinder is connected to the slider. The receiving component includes a sliding seat fixedly connected to the slider, a fixed receiving plate fixedly arranged on the sliding seat, and a swinging receiving plate that can be reset and move relative to the fixed receiving plate. A fork left claw for penetrating into the cloth seam of the puller and a left limiting edge corresponding to blocking the side wall of the puller are formed on the fixed receiving plate. A fork right claw that can be combined with the fork left claw to form a complete fork for penetrating into the cloth seam of the puller and a right limiting edge opposite to the left limiting edge for blocking the side wall of the puller are arranged on the swinging receiving plate. The receiving port is formed between the same sides of the left limiting edge, the fork left claw, the right limiting edge, and the fork right claw. The tab movable push rod is arranged on the opposite side of the receiving port. The puller model groove is arranged corresponding to the receiving component on one side of the feeding direction of the feeding mechanism.

[0008] The feeding mechanism further includes a tab protection plate component arranged on the slider. The tab protection plate component includes a tab protection plate spaced and corresponding below the receiving component, a feeding seat fixedly connected to the slider, an elastic telescopic structure connecting the tab protection plate and the feeding seat for realizing the telescopic reset of the tab protection plate, and a sliding rod guiding structure connecting the tab protection plate to make the tab protection plate slide guidingly relative to the slider. One side surface of the tab protection plate can be opposite to the tab movable push rod to block the tab when the tab movable push rod pushes the tab, so that the tab is in the unlocking state of the puller and can correspond to the puller model groove.

[0009] A sliding limit block is arranged on the slider, and a reset positioning component and / or a reset buffer component for adjusting the feeding reset and blocking the sliding limit block are arranged on the feeding fixed mounting seat.

[0010] The die mechanism includes a left placement block and a right placement block that are relatively spaced apart. The spaced space therebetween forms a tab space for the tab of the pull head to be embedded to prevent the tab from changing its state. The upper end surfaces of the left placement block and the right placement block are respectively provided with embedded positioning grooves for positioning and holding the front end and the rear end of the pull head. The embedded positioning grooves and the tab space constitute the pull head model groove, and the die mechanism can move up and down.

[0011] The tab pushing mechanism includes a tab fixing seat fixedly installed on the feeding fixed seat, a tab driving cylinder and a tab sliding rail fixedly arranged on the tab fixing seat, a tab sliding block sliding on the tab sliding rail and connected to the tab driving cylinder, and the tab moving push rod connected to the tab sliding block. The tab moving push rod pushes the tab of the pull head in a downwardly inclined pushing direction.

[0012] The material pushing mechanism includes a material pushing seat, a guiding material pushing component, a material pushing driving structure, and a push claw guiding plate component. The lower bottom surface of the material pushing seat is provided with a pull head feeding groove. One end of the upper surface of the material pushing seat corresponding to the output direction of the pull head feeding groove is provided with a guiding groove. The bottom surface of the guiding groove is provided with a material pushing groove communicating with the pull head feeding groove. The guiding material pushing component includes a guiding plate movably embedded in the guiding groove and a movable push claw block arranged on the guiding plate and including a push claw elastically embedded in the material pushing groove and contacting the pull head. The material pushing driving structure is arranged on the material pushing seat and connected to the guiding plate. The push claw guiding plate component is arranged on the material pushing seat to guide the moving state of the movable push claw block.

[0013] The side wall of the movable push claw block protrudes with a guiding pin. The push claw guiding plate component is correspondingly arranged on the material pushing seat on one side of the guiding groove. One end of the push claw guiding plate component facing the output direction of the pull head feeding groove and corresponding to one side wall of the guiding groove extends and protrudes to form a guiding plate edge. The guiding plate edge is a slope edge extending in the output direction of the pull head feeding groove and downward. When the guiding material pushing component is pushed, the guiding pin contacts the lower surface of the guiding plate edge. When the guiding material pushing component returns, the guiding pin contacts the upper surface of the guiding plate edge. A reset tension spring is arranged between the other end of the push claw guiding plate component and the material pushing seat. The two ends of the push claw guiding plate component are hinged to the material pushing seat through a pin shaft.

[0014] The movable push claw block has an L-shaped structure. One arm of its L shape is the push claw embedded in the material pushing groove and contacting the pull head. The other arm of its L shape is hinged to the guiding plate and an end thereof extends to form an elastic support part. A support spring is arranged between the elastic support part and the guiding plate. The other arm of the movable push claw block in the L shape is provided with a height adjusting structure for adjusting the height of the push claw at a position close to the push claw.

[0015] The lower bottom surface of the pushing seat is respectively provided with steel sheets on both sides corresponding to the pull head feeding groove, and is respectively locked on the pushing seat through steel sheet pressing plates. The opposite sides of the two steel sheets protrude from the side walls of the pull head feeding groove to form embedding edges that can be embedded into the cloth seam of the pull head. The two side walls of the pull head feeding groove are respectively provided with material blocking structures at the pushing positions corresponding to the output ends. The material blocking structures include installation grooves opened on the pushing seat, blocking blocks embedded in the installation grooves and protruding from the side walls of the pull head feeding groove at the ends, tension springs embedded in the installation grooves and abutting against one end of the blocking blocks, and locking blocks locked in the installation grooves and abutting against the other ends of the tension springs.

[0016] By adopting the above technical solutions, the beneficial effects of the present invention are as follows: In the spring pull head automatic feeding device with the above structure, after the push head mechanism orderly pushes the pull heads one by one to the upper limit of the feeding mechanism to clamp them, the pull tab moving push rod of the push tab mechanism pushes the pull tab of the pull head to the unlocking state. Then, the feeding mechanism transports the pull head adjusted to the unlocking state while maintaining the unlocking state to the pull head model groove of the mold mechanism to position the pull head and stabilize the unlocking state of the pull head. Then, the mold mechanism is moved to the automatic threading station. In this way, during the entire pull head transportation process, the pull head will not be adjusted to the locked state, and the unlocking state of the pull head can be effectively maintained. It is applicable to spring pull heads that do not perform some unlocking state adjustments, have poor unlocking state maintenance, or do not have the function of maintaining the unlocking state during automatic threading of the pull head, thereby achieving the above-mentioned purpose of a spring pull head automatic feeding device of the present invention and solving the problem that the existing automatic threading machine cannot perform automatic threading of spring pull heads.

[0017] The receiving component structure of the above feeding mechanism can accurately receive materials and can relatively stably limit the pull head, avoiding changing the working position during the push tab action and affecting the subsequent conveying accuracy. The pull tab guard plate and the pull tab moving push tab can smoothly push the pull tab to change to the unlocking state and maintain the state during transportation. After being transported to the mold mechanism, the receiving component

[0018] In summary, with the above further structural settings of each mechanism, the mechanical structure layout has reasonable actions, ingenious structural settings, flexible and smooth actions, is not prone to failures, can reduce the contact wear during the transportation of the pull head product, and has high accuracy in the transportation and positioning actions of the pull head, which is more conducive to the smooth progress of automatic threading and better realizes the above-mentioned purpose and effect of the present invention. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 is a structural schematic diagram of different states of the pull tab of a spring pull head involved in the present invention.

[0020] Figure 2 is a structural schematic diagram of a spring pull head automatic feeding device involved in the present invention.

[0021] Figure 3 、Figure 4 and Figure 5 are schematic structural diagrams of the feeding mechanism involved in the present invention from different angles and in different view states.

[0022] Figure 6 is Figure 4 the schematic cross-sectional structural diagram taken along the A-A direction of

[0023] Figure 7 the schematic structural diagram of the feeding state of an automatic spring pull head feeding device involved in the present invention.

[0024] Figure 8 is the schematic structural diagram of the material receiving component involved in the present invention.

[0025] Figure 9 is the schematic structural diagram of the mold mechanism involved in the present invention.

[0026] Figure 10 and Figure 11 are schematic structural diagrams of different states of the material pushing mechanism involved in the present invention.

[0027] Figure 12 is the top view structural diagram of the material pushing mechanism involved in the present invention.

[0028] Figure 13 is the bottom view structural diagram of the material pushing mechanism involved in the present invention.

[0029] Figure 14 is the cross-sectional structural diagram of the material pushing mechanism involved in the present invention.

[0030] Figure 15 is the partial structural diagram of the material pushing mechanism involved in the present invention.

[0031] Figure 16 is the partial cross-sectional structural diagram of the material pushing mechanism involved in the present invention.

[0032] In the figure:

[0033] Feeding mechanism b; Feeding fixed mounting seat b1; Guide sliding structure b2; Guide rail b21; Slide block b22; Sliding limit block b221; Feeding drive cylinder b3; Material receiving component b4; Sliding seat b41; Fixed material receiving plate b42; Fork left claw b421; Left limit edge b422; Swing material receiving plate b43; Fork right claw b431; Right limit edge b432; Material receiving port b44; Reset tension spring b45; Pull tab guard plate assembly b5; Pull tab guard plate b51; Feeding seat b52; Elastic telescopic structure b53; Pin rod b531; Reset spring b532; Slide rod guiding structure b54; Slide rod b541; Reset positioning component b6; Reset buffer component b7; Pushing piece mechanism c; Pushing piece fixed seat c1; Pushing piece drive cylinder c2; Pushing piece slide rail c3; Pushing piece slide block c4; Pull tab movable push rod c5; Die mechanism d; Left placement block d1; Right placement block d2; Pull tab space d3; Embedded positioning groove d4; Pull head model groove d5; Pushing material mechanism a; Pushing material seat 1; Pull head feeding groove 11; Guide groove 12; Pushing material groove 13; Steel sheet 14; Embedded edge 141; Steel sheet pressing plate 15; Stopper 16; Tension spring 17; Locking block 18; Guiding pushing component 2; Guide plate 21; Movable push claw block 22; Push claw 220; Guide pin 221; Positioning block 2201; Elastic support part 222; Threaded hole 223; Adjusting bolt 224; Support spring 23; Pushing material drive structure 3; Drive cylinder 31; Connecting block 32; Floating joint 33; Push claw guide plate component 4; Guide plate edge 41; Pin shaft 43; Straight edge 44. Detailed implementation mode

[0034] In order to further explain the technical solution of the present invention, the present invention will be elaborated in detail below through specific embodiments.

[0035] An automatic feeding device for spring pull heads disclosed in this embodiment is mainly applied to a mechanical device for automatically threading pull heads on zippers, such as Figure 2 shown, and includes a pushing material mechanism a, a feeding mechanism b, a pushing piece mechanism c, and a die mechanism d.

[0036] The pushing material mechanism a is used to push the pull heads one by one onto the feeding mechanism b. Here, it should be noted that the input end of the pushing material mechanism a is usually connected to a vibrating feeding device. This vibrating feeding device can vibrate and sort the pull heads in the material barrel and output them, and during the sorting and output process, it can adjust the orientation of the pull heads so that the output pull heads are sorted and output in a unified state and a unified orientation. In addition, the mechanical device in this embodiment mainly takes the spring pull head as an example for conveying. Since the spring pull head is in a locked state after being produced, it is in a locked state after being output from the vibrating feeding device, that is Figure 1 in the state where the pull tab is attached to the surface of the pull head in a locked state, and the state where the pull tab is perpendicular or approximately perpendicular to the surface of the pull head is the unlocking device. Pull heads in this state are usually filtered out and not output during the conveying process of the vibrating feeding device or need to be adjusted before being output.

[0037] The feeding mechanism b is used to limit and hold the pull tabs one by one for adjusting the state of the pull tabs of the pull heads and transporting them to the die mechanism d.

[0038] The push tab mechanism c is used to adjust the pull tabs of the pull heads limited on the feeding mechanism b to the unlocking state.

[0039] The die mechanism d is used to limit and place the pull heads for subsequent processes. On the automatic zipper pull head threading machine, it mainly limits and places the pull heads and pushes the pull heads to the threading station.

[0040] The detailed structural position connection relationships of the above-mentioned mechanisms will be described below with reference to the drawings.

[0041] The feeding mechanism b includes a feeding fixed mounting base b1, a guiding and sliding structure b2 arranged on the feeding fixed mounting base b1, a feeding driving cylinder b3, and a material receiving component b4 arranged on the guiding and sliding structure b2. In the figure, the feeding fixed mounting base b1 is an L-shaped base fixedly mounted on the machine base of the automatic zipper pull head threading machine. The guiding and sliding structure b2 includes a guide rail b21 fixedly arranged on the upper surface of the horizontal arm of the L-shaped base of the feeding fixed mounting base b1 and a slider b22 sliding on the guide rail b21. One end of the guide rail b21 faces one end of the vertical arm of the L-shaped base, and the other end faces the opposite end of the vertical arm of the L-shaped base. The piston rod of the feeding driving cylinder b3 is connected to the slider b22, and the slider b22 is driven to slide guidingly on the guide rail b21 by the action of the feeding driving cylinder b3. The material receiving component b4 is one of the important parts of the structure designed according to the mechanical structure layout and action process of the present invention. For example Figure 3 、 Figure 4 、 Figure 5 、 Figure 6 and Figure 7 as shown, it will be described in segments below.

[0042] The material receiving component b4 includes a sliding seat b41 fixedly connected to the slider b2, a fixed material receiving plate b42 fixedly arranged on the sliding seat b41, and a swing material receiving plate b43 that can be reset and move relative to the fixed material receiving plate b42. The fixed material receiving plate b42 is as Figure 7As shown, it is provided with a left fork claw b421 for penetrating into the cloth seam of the slider (the left fork claw b421 in the figure is an independent steel sheet arranged below the fixed material receiving plate b42) and a left limiting edge b422 corresponding to blocking the side wall of the slider (the left limiting edge b422 in the figure is the edge of the fixed material receiving plate b42 forming the contour shape of the side of the slider). The swing material receiving plate b43 is provided with a right fork claw b431 that can be combined with the left fork claw b421 to form a complete fork for penetrating into the cloth seam of the slider, and a right limiting edge b432 opposite to the left limiting edge b422 for blocking the side wall of the slider (in the figure, the swing material receiving plate b43 is an integrally formed block structure, or can also be composed of combined connection of independent components). An open material receiving port b44 is formed between the same sides of the left limiting edge b422, the left fork claw b421, the right limiting edge b432, and the right fork claw b431 for correspondingly connecting with the output end of the material pushing mechanism a. That is, the sliders output one by one by the output end of the material pushing mechanism a enter the material receiving assembly b4 through the material receiving port b44. It should be noted that the swing material receiving plate b43 is movably reset relative to the fixed material receiving plate b42. As shown in the figure, one end of the swing material receiving plate b43 forms the above-mentioned right fork claw b431 and right limiting edge b432 structures, and the other end is hinged above the fixed material receiving plate b42 through a pin shaft mounting seat, and a reset tension spring b45 is provided to achieve the reset action. One end of the reset tension spring b45 is connected to the swing material receiving plate b43, and the other end is connected to the pin shaft mounting seat. When the feeding driving cylinder b3 drives the slider b22 to slide for feeding, the force generated by the sliding will drive the swing material receiving plate b43 to rotate along the hinge point, open relative to the fixed material receiving plate b42, and separate the left fork claw b421 from the right fork claw b431 and the left limiting edge b422 from the right limiting edge b432. In this way, the slider entering the material receiving assembly b4 through the material receiving port b44 can be separated from the material receiving assembly b4 from one side perpendicular to the material receiving port b44. After the slider is separated, under the pulling force of the reset tension spring b45, the swing material receiving plate b43 is reset to receive the next slider. The material receiving assembly b4 can better limit the slider during the material receiving process and the feeding process, ensuring that the slider will not twist and displace, so as to better achieve the accuracy required for subsequent processes. The above-mentioned feeding mechanism b is further structurally arranged in this embodiment to better cooperate with the tab pushing mechanism c to push the tab to the unlocking state and keep the slider in the unlocking state during feeding to the die mechanism d. The following is a detailed description.

[0043] The feeding mechanism b further includes a tab guard plate assembly b5 provided on the slider b22. As shown in the figure, its structure includes a tab guard plate b51 spaced correspondingly below the material receiving assembly b4, a feeding seat b52 fixedly connected to the slider b22, an elastic telescopic structure b53 connecting the tab guard plate b51 and the feeding seat b52 for realizing the telescopic reset of the tab guard plate b51, and a slide rod guiding structure b54 connecting the tab guard plate b51 to enable the tab guard plate b51 to slide in a guiding manner relative to the slider b22. In the figure, the tab guard plate b51 is vertically arranged horizontally and spaced correspondingly below the material receiving port b44. The gap formed by the spacing allows the pusher mechanism a to push the pull head into the lower part of the pull head on the material receiving assembly b4 (including the tab in the locked state) to pass through. Also, the tab guard plate b51 is provided corresponding to the die mechanism d to keep the tab of the pull head in the unlocked state and convey it to the die mechanism d. Therefore, in order to prevent the tab guard plate b51 from affecting the placement of the pull head on the die mechanism d when conveying the pull head to the die mechanism d, the above-mentioned elastic telescopic structure b53 and slide rod guiding structure b54 are provided. As shown in the figure, the elastic telescopic structure b53 includes a pin rod b531 with one end connected to the end of the tab guard plate b51 facing the feeding drive cylinder b3 and the other end passing through a movable through hole opened on the feeding seat b52, and a return spring b532 provided between the tab guard plate b51 and the movable through hole. When feeding the pull head to the die mechanism d, the tab guard plate b51 will be blocked by the die mechanism d and cannot move forward. The blocking pressure pushes the tab guard plate b51 to compress the return spring b532, causing the pin rod b531 to penetrate into the movable through hole opened on the feeding seat b52. When the blocking pressure is lost, the tab guard plate b51 is pushed to reset correspondingly below the material receiving port b44 under the tension of the return spring b532. As shown in the figure, the slide rod guiding structure b54 includes a slide rod b541 movably embedded in a sliding guide groove opened on the feeding seat b52. One end of the slide rod b541 is connected to the end of the tab guard plate b51 facing the feeding drive cylinder b3, and the other end is in a hook shape for hooking the feeding seat b52 when the tab guard plate b51 is reset to limit the reset position. Through the above structural settings of the tab guard plate assembly b5, in addition to being able to achieve the function of corresponding to the tab, it can also achieve better smooth and stable mechanical movement activity.

[0044] In addition, in order to achieve the position limitation of the action part of the feeding mechanism b, such as the limitation of the position of the slider b22 for feeding and returning, and to prevent mechanical wear and influence on the mechanical action accuracy caused by the returning force, a sliding limit block b221 can be further provided on the slider b22 as shown in the figure, and a reset positioning component b6 and / or a reset buffer component b7 for adjusting the feeding reset can be provided on the feeding fixed mounting seat b1 to block the sliding limit block b221, thereby achieving the above-mentioned required effect. The reset positioning component b6 in the figure is a bolt screwed on the L-shaped seat vertical arm of the feeding fixed mounting seat b1, and the sliding limit block b221 is supported by the end of the bolt. The reset buffer component b7 in the figure is a rod member arranged on the L-shaped seat vertical arm of the feeding fixed mounting seat b1, and a buffer pad for supporting the sliding limit block b221 is provided on the end of the rod member.

[0045] Next, the structure of the push-piece mechanism c is described. As shown in the figure, the push-piece mechanism c includes a push-piece fixing seat c1 fixedly mounted on the feeding fixed mounting seat b1, a push-piece driving cylinder c2 and a push-piece slide rail c3 fixedly mounted on the push-piece fixing seat c1, a push-piece sliding block c4 sliding on the push-piece sliding rail c3 and connected to the push-piece driving cylinder c2, and a pull-piece movable push rod c5 connected to the push-piece sliding block c4. The push-piece mechanism c has a simple mechanical pushing structure, and its action principle will not be described in detail here. The pull-piece movable push rod c5 in the figure is a pull-piece that pushes the pull head in the movable direction of downward tilting. This structural arrangement can better contact the pull piece and push the pull piece downward. In the figure, the push-piece mechanism c and the material pushing mechanism a are arranged in the material receiving component b44 On the opposite sides, the pull-tab movable push rod c5 corresponds to the material receiving port b44, specifically, is arranged corresponding to the opposite side thereof, and the pull-tab movable push rod c5 is in a relative state with one side of the pull-tab guard plate b51 when pushing the pull-tab, so that the pull-tab is in the slider unlocking state when the pull-tab movable push rod c5 pushes the pull-tab, and then returns after being pushed to the unlocking state.

[0046] Next, the structure of the mold mechanism d is described, such as Figure 9As shown, its structure includes a left placement block d1 and a right placement block d2 that are relatively spaced apart. The spaced space between the two forms a tab space d3 for the tab of the slider to be embedded to prevent the tab from changing its state. By the tab space d3, the tab is restricted to prevent it from rotating left and right into a locked state. The upper end surfaces of the left placement block d1 and the right placement block d2 are respectively provided with embedded positioning grooves d4 for positioning and holding the front end and the rear end of the slider. The embedded positioning grooves d4 and the tab space d3 constitute a slider model groove d5, so as to place the slider conveyed from the receiving component b4 of the feeding mechanism b. Therefore, the slider model groove d5 is arranged on one side in the feeding movement direction of the feeding mechanism b corresponding to the receiving component b4. The die mechanism d can move up and down. When the feeding mechanism b moves the receiving component b4 to the working position (at this time, the tab of the slider is embedded in the tab space d3), the die mechanism d rises, so that the slider of the receiving component b4 is embedded in the embedded positioning groove d4. At this time, the feeding mechanism b moves back (the acting force of the backward movement drives the swing receiving plate b43 to rotate open, the receiving component b4 opens, and the slider disengages). The die mechanism d can then continue to act to stably push the slider to the automatic zipper slider threading station for the threading work.

[0047] Finally, describe the structure of the pusher mechanism a, as Figure 8 、 Figure 10 -- Figure 16 As shown, its structure includes a pusher seat 1, a guiding pusher component 2, a pusher driving structure 3, and a pusher claw guiding plate component 4. The pusher seat 1 is fixedly installed on the machine base of the automatic zipper slider threading machine for the installation and connection of the remaining components and the conveyance of the slider. The guiding pusher component 2 is used to realize the pushing of the slider. The pusher driving structure 3 provides the pushing and returning power for the guiding pusher component 2. The pusher claw guiding plate component 4 is used for guiding the pushing and returning of the guiding pusher component 2. The structural position connection relationships of each component will be described in detail below with reference to the drawings.

[0048] The pushing seat 1 is provided with a slider feeding groove 11 on its lower bottom surface, and a guide groove 12 is opened at one end of the upper surface corresponding to the output direction of the slider feeding groove 11. The bottom surface of the guide groove 12 is provided with a pushing groove 13 connected to the slider feeding groove 11, and the two side edges form a placing edge for the guiding pushing component 2 to place and move. The lower bottom surface of the pushing seat 1 is provided with steel sheets 14 on both sides corresponding to the slider feeding groove 11 and are locked on the pushing seat 1 by steel sheet pressing plates 15 respectively. The opposite edges of the two steel sheets 14 protrude from the side walls of the slider feeding groove 11 to form an embedding edge 141 that can be embedded in the slider cloth seam. In this way, after the zipper head enters the slider feeding groove 11, the two embedding edges 141 are respectively embedded in the cloth seams on the left and right sides of the zipper head, which not only supports the zipper head but also has the function of conveying and guiding. In addition, the two side walls of the slider feed slot 11 are respectively provided with a blocking structure at the pushing position corresponding to the output end, which is used to position the zipper head when it is pushed out. Its structure includes a mounting slot 15 provided on the pushing seat 1, a block 16 embedded in the mounting slot 15 and with its end correspondingly protruding from the side wall of the slider feed slot 11, a tension spring 17 embedded in the mounting slot 15 and with one end supporting the block 16, and a locking block 18 locked in the mounting slot 15 and supporting the other end of the tension spring 17. The tension spring 17 pushes the block 16 out so that its end protrudes out of the side wall of the slider feed slot 11. The block 16 protruding toward each other can be used to block the zipper head. The ends of the two blocks 16 shown in the figure form a trumpet shape for the slider to be embedded. This structure can achieve the effect of adjusting the direction of the zipper head.

[0049] The guiding and pushing member 2 includes a guiding plate 21 movably embedded in the guiding groove 12 and a movable pawl block 22 disposed on the guiding plate 21 and including a pawl 220 elastically embedded in the pushing groove 13 and contacting the slider. A guiding pin 221 protrudes from the side wall of the movable pawl block 22. The movable pawl block 22 is in an L-shaped structure. One arm of the L-shape is the pawl 220 embedded in the pushing groove 13 and contacting the slider, and the other arm is hinged on the guiding plate 21 and an elastic supporting portion 222 is formed at the end. A supporting spring 23 is disposed between the elastic supporting portion 222 and the guiding plate 21. Through this structural arrangement, the movable pawl block 22 can move relative to the guiding plate 21 in a lever-like manner, and under the tension of the supporting spring 23, the downward pushing force of the pawl 220 can be maintained, which is beneficial for the pawl 220 to be embedded in the pushing groove 13 and contact the zipper slider. In this embodiment, as shown in the figure, on the other arm of the L-shape of the movable pawl block 22, a height adjusting structure for adjusting the height of the pawl 220 is provided at one end close to the pawl 220, and the height of the pawl 220 can be adjusted according to the height of the zipper slider to be pushed, so that the zipper slider pushing mechanism of the present invention can push zipper sliders of different models and sizes, and has a wider application range. The specifically disclosed structure is as follows: the height adjusting structure is a threaded hole 223 opened on the other arm of the L-shape of the movable pawl block 22 and a adjusting bolt 224 is screwed thereto. The end of the adjusting bolt 224 passes through the threaded hole 223 and abuts against the guiding plate 21. During adjustment, by rotating the adjusting bolt 224, the height position of the pawl 220 can be changed. In the figure, a nut is also screwed between the head of the adjusting bolt 224 and the other arm of the L-shape of the movable pawl block 22, which is used to adjust the limit and has a stable positioning effect. Further, in this embodiment, positioning blocks 2201 protrude from both ends of the lower edge of the pawl 220 respectively. This structural arrangement can enable the pawl 220 to better contact the zipper slider. As shown in the figure, the hook portion of the slider can be embedded between the two positioning blocks 2201, which can also avoid contacting other sliders and prevent other sliders from being driven.

[0050] The pushing driving structure 3 is disposed on the pushing seat 1 and connected to the guiding plate 21. The pushing driving structure disclosed in this embodiment, as shown in the figure, includes a driving cylinder 31 installed on the pushing seat 1 facing the input direction of the slider feeding groove through a mounting seat, a connecting block 32 connected to the guiding plate 21, and a floating joint 33 connecting the piston rod of the driving cylinder 31 and the connecting block 32. By using the floating joint 33 for connection, connection limitation can be achieved and a certain floating space can be provided for the pushing and returning movement, reducing rigid contact wear.

[0051] The push claw guide plate component 4 is arranged on the push material seat 1 to guide the moving state of the movable push claw block 22. Its corresponding guide pin 221 is arranged on the push material seat 1 on one side of the guide groove 12. One end of the push claw guide plate component 4 facing the output direction of the pull head feeding groove 11 and corresponding to the side wall on one side of the guide groove 12 extends and protrudes to form a guide plate edge 41. The guide plate edge 41 is a slope edge extending in the output direction of the pull head feeding groove 11 and downward. As shown in the figure, it is an inclined structure inclined downward in the output direction of the pull head feeding groove 11. When the guiding and pushing component 3 moves forward, the guide pin 221 contacts the lower surface of the guide plate edge 41. When the guiding and pushing component 3 moves back, the guide pin 221 contacts the upper surface of the guide plate edge 41. A reset tension spring is arranged between the other end of the push claw guide plate component 4 and the push material seat 1. The two ends of the push claw guide plate component 4 are hinged to the push material seat 1 through a pin shaft 43. Specifically in the figure, the push material seat 1 is provided with a cover plate for the hinge of the push claw guide plate component 4, and the end of the pin shaft 43 is connected to the cover plate, so as to realize the hinge movement of the push claw guide plate component 4. A flat edge 44 protrudes from the cover plate corresponding to the guide plate edge 41 and connects to the lower end of the slope of the guide plate edge 41. When the guiding and pushing component 3 moves forward, the guide pin 221 slides from the lower surface of the guide plate edge 41 to above the flat edge 44. During the pushing action, the guide pin enters and contacts the lower surface from a high position of the guide plate edge 41. As the guide pin 221 moves forward, the guide plate edge 41 is lifted by the guide pin 221. At the same time, the guide plate edge 41 also presses the guide pin 221, so that the push claw 220 can stably contact the zipper head and push it. As the guide pin 221 continues to move forward and crosses the guide plate edge 41 to the flat edge 44, at this time, a complete zipper head has been pushed out. The guide plate edge 41 returns to its original inclined position under the tension of its reset tension spring. When returning, the guide pin 221 is higher than the low position of the guide plate edge 41. Therefore, the guide pin 221 will rise and return along the slope direction of the guide plate edge 41. The rising and returning can lift the push claw 220 so that it does not contact the zipper head and returns to the original position to perform the next pushing action.

[0052] For the push material mechanism a with the above structure, its guiding and pushing component realizes the pushing out and returning movements under the drive of the pushing drive structure. When pushing out, under the elastic pressure of the push claw guide plate component, the push claw can stably contact the pull head and push it out. When returning, under the guiding action of the push claw guide plate component, the push claw can be lifted and does not contact the zipper head and returns to its original position. In this way, the pushing is more stable, and it will not contact the zipper head when returning, avoiding the situation that the zipper head is hooked back. In addition, the above structure setting can make the actions of pull head conveying, pushing, positioning, etc. proceed smoothly and the action positions are accurate, further improving the working stability.

[0053] The above embodiments and drawings do not limit the product form and style of the present invention. Any appropriate changes or modifications made by those of ordinary skill in the art shall be regarded as not departing from the patent scope of the present invention.

Claims

1. An automatic feeding device for spring pullers, characterized in that, It includes a pusher mechanism, a feeder mechanism, a tab pusher mechanism and a die mechanism. The pusher mechanism is used to push the pull tabs one by one onto the feeder mechanism. The feeder mechanism is used to limit and hold the pull tabs one by one for adjusting the tab state of the pull tab and transporting them to the die mechanism. The tab pusher mechanism is used to adjust the tab of the pull tab limited on the feeder mechanism to the unlocked state. The die mechanism is used to limit and place the pull tab for subsequent processes. A pull tab model groove is provided on the die mechanism for placing the pull tab transported from the feeder mechanism. The feeder mechanism includes a receiving port that can move and can be correspondingly connected to the output end of the pusher mechanism. The tab pusher mechanism includes a tab movable push rod that can push the tab corresponding to the receiving port. The feeder mechanism includes a feeder fixed mounting base, a guiding and sliding structure arranged on the feeder fixed mounting base, a feeder driving cylinder, and a receiving component arranged on the guiding and sliding structure. The guiding and sliding structure includes a guide rail fixedly arranged on the feeder fixed mounting base and a slider sliding on the guide rail. The piston rod of the feeder driving cylinder is connected to the slider. The receiving component includes a sliding seat fixedly connected to the slider, a fixed receiving plate fixedly arranged on the sliding seat, and a swing receiving plate that can be reset and move relative to the fixed receiving plate. A fork left claw for penetrating into the cloth seam of the pull tab and a left limiting edge corresponding to blocking the side wall of the pull tab are formed on the fixed receiving plate. A fork right claw that can be combined with the fork left claw to form a complete fork for penetrating into the cloth seam of the pull tab and a right limiting edge opposite to the left limiting edge for blocking the side wall of the pull tab are arranged on the swing receiving plate. The receiving port is formed between the same sides of the left limiting edge, the fork left claw, the right limiting edge, and the fork right claw. The tab movable push rod is arranged on the opposite side of the receiving port. The pull tab model groove is arranged on one side of the feeder mechanism in the feeding movement direction corresponding to the receiving component. The feeder mechanism further includes a tab guard plate assembly arranged on the slider. The tab guard plate assembly includes a tab guard plate spaced and corresponding below the receiving component, a feeder seat fixedly connected to the slider, an elastic telescopic structure connecting the tab guard plate and the feeder seat for realizing the telescopic reset of the tab guard plate, and a slide bar guiding structure connecting the tab guard plate to make the tab guard plate slide relative to the slider in a guiding manner. One side surface of the tab guard plate can be opposite to the tab movable push rod to block the tab when the tab movable push rod pushes the tab, so that the tab is in the unlocked state of the pull tab and can correspond to the pull tab model groove. The tab pusher mechanism includes a tab pusher fixed seat fixedly installed on the feeder fixed mounting base, a tab pusher driving cylinder and a tab pusher slide rail fixedly arranged on the tab pusher fixed seat, a tab pusher slider sliding on the tab pusher slide rail and connected to the tab pusher driving cylinder, and the tab movable push rod connected to the tab pusher slider. The tab movable push rod is pushed in a downwardly inclined moving direction to push the tab of the pull tab. The tab pusher mechanism and the pusher mechanism are arranged on the opposite sides of the receiving component. After the tab movable push rod pushes the pull tab to the unlocked state, it retracts immediately.

2. The automatic feeding device for spring pullers according to claim 1, wherein, A sliding limit block is arranged on the slider, and a reset positioning component and / or a reset buffer component for adjusting the feeding reset and blocking the sliding limit block are arranged on the feeder fixed mounting base.

3. The automatic feeding device for spring pullers according to claim 1, characterized in that, The mold mechanism includes a left placement block and a right placement block that are relatively spaced apart, and the spacing between the two forms a pull-tab space for the pull tab of the slider to be embedded to prevent the pull tab from changing its state. The upper end surfaces of the left placement block and the right placement block are respectively provided with embedding positioning grooves for positioning and holding the front end and the rear end of the slider, respectively. The embedding positioning grooves and the pull-tab space constitute the slider model groove, and the mold mechanism can be raised and lowered.

4. A spring pull head automatic feeding device according to any one of claims 1-3, characterized in that, The pushing mechanism includes a pushing seat, a guiding pushing component, a pushing driving structure and a pushing claw guide component. The lower bottom surface of the pushing seat is provided with a pulling head feeding groove, and the upper surface of the pushing seat is provided with a guiding groove at one end corresponding to the output direction of the pulling head feeding groove. The bottom surface of the guide groove is provided with a pushing groove connected to the pulling head feeding groove. The guiding pushing component includes a guiding plate embedded in the guiding groove and a movable pushing claw block arranged on the guide plate and including a pushing claw elastically embedded in the pushing groove and contacting the pulling head. The pushing driving structure is arranged on the pushing seat and connected to the guide plate. The pushing claw guide component is arranged on the pushing seat and is used to guide the active state of the movable pushing claw block.

5. The automatic feeding device for spring pullers according to claim 4, characterized in that, The movable pushing claw block is provided with a guide pin on the side wall thereof, and the pushing claw guide plate component corresponds to the guide pin which is arranged on the pushing seat on one side of the guide groove; the pushing claw guide plate component extends and protrudes toward one end of the output direction of the sliding head feeding slot and corresponds to the side wall on one side of the guide groove to form a guide plate edge; the guide plate edge is a slope edge extending downward in the output direction of the sliding head feeding slot; when the guide pushing material component is pushing, the guide pin contacts the lower surface of the guide plate edge; when the guide pushing material component returns, the guide pin contacts the upper surface of the guide plate edge; a reset tension spring is provided between the other end of the pushing claw guide plate component and the pushing seat, and the two ends of the pushing claw guide plate component are hinged to the pushing seat through a pin shaft.

6. The automatic feeding device for spring pull heads according to claim 4, characterized in that, The movable push claw block has an L-shaped structure, one arm of the L-shape is the push claw embedded in the push groove and in contact with the pull head, the other arm is hinged on the guide plate and an elastic support part is extended at the end, a support spring is provided between the elastic support part and the guide plate, and the other arm of the L-shape of the movable push claw block is provided with a height adjustment structure for adjusting the height of the push claw at the end close to the push claw.

7. The automatic feeding device for spring pullers according to claim 4, wherein The lower bottom surface of the pushing seat is respectively provided with steel sheets on both sides of the corresponding slider feeding groove and are respectively locked on the pushing seat by steel sheet pressure plates, and the opposite edges of the two steel sheets protrude from the side walls of the slider feeding groove to form an embedding edge that can be embedded in the slider cloth seam, and the two side walls of the slider feeding groove are respectively provided with a blocking structure at the pushing position corresponding to the output end, and the blocking structure includes a mounting groove provided on the pushing seat, a blocking block embedded in the mounting groove and with the end thereof corresponding to the side wall of the slider feeding groove, a tension spring embedded in the mounting groove and with one end supporting the blocking block, and a locking block locked in the mounting groove and supporting the other end of the tension spring.

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