Zipper feeding mechanism

Abstract

The application discloses a feeding mechanism of a zipper, which comprises a workbench, a feeding roll, a standby roll and a feeding roller arranged on the workbench, the workbench comprises a base and a supporting frame, the feeding roll and the standby roll are respectively arranged on the side surface of the base in a rotating mode, the feeding roller is arranged on one side of the supporting frame in a rotating mode, one side of the feeding roller is provided with a rubber-coated roller barrel abutting against the surface of the feeding roller, a storage device is arranged in the supporting frame, and the zipper on the feeding roll or the standby roll enters between the feeding roller and the rubber-coated roller barrel through the storage device. The feeding mechanism of the zipper has simple structure, the zipper between the feeding roll and the feeding roller is stored in the storage device, when the standby roll replaces the feeding roll, the storage device still provides the zipper for a bag making machine, and it is not necessary to stop the machine, so that the production efficiency is improved.

Description

Technical Field

[0001] This application relates to the field of automated production technology, and in particular to a zipper feeding mechanism. Background Technology

[0002] Zipper bags are a commonly used type of plastic packaging bag, applicable in various fields such as industrial packaging, daily chemical packaging, and food packaging. They are very popular and widely used in the domestic market due to their excellent transparency, making them particularly sought after by garment factories, fabric wholesale markets, small commodity wholesale markets, and the food industry. They are also an ideal choice for gift packaging. Currently, the zipper is fed into the bag-making machine via a feeding mechanism while the bag-making machine is running, and then welded to the packaging bag / film material inside the machine. The existing feeding mechanism allows the zipper to directly enter the bag-making machine after the feed roll is unloaded. When the zipper in the feed roll is used up, the machine needs to be stopped to replace the feed roll, causing the bag-making machine to stop and wait, which wastes time. Therefore, improvements are needed. Utility Model Content

[0003] The purpose of this invention is to provide a zipper feeding mechanism to overcome the shortcomings of the prior art.

[0004] To achieve the above objectives, this utility model provides the following technical solution: This utility model discloses a zipper feeding mechanism, including a horizontally arranged worktable and a feeding roll, a spare roll, and a feeding roller disposed on the worktable. The worktable includes a base and a support frame. The feeding roll and the spare roll are rotatably disposed on the side of the base, and the feeding roller is rotatably disposed on one side of the support frame. A rubber-coated roller is disposed on one side of the feeding roller and abuts against the surface of the feeding roller. A material storage device is disposed inside the support frame. The zipper on the feeding roll or the spare roll enters between the feeding roller and the rubber-coated roller after passing through the material storage device.

[0005] Furthermore, in the zipper feeding mechanism described above, the workbench is equipped with an unwinding motor and a spare motor that drive the unwinding roll and the spare roll respectively.

[0006] Furthermore, in the zipper feeding mechanism described above, the feeding roller is connected to the output shaft of the feeding motor, the feeding motor is mounted on the support frame via a motor mount, and the rubber-coated roller is disposed on the motor mount.

[0007] Furthermore, in the aforementioned zipper feeding mechanism, a swing arm for mounting the rubber-coated roller is provided inside the motor base. The rubber-coated roller is rotatably connected to the swing arm, and the top end of the swing arm is rotatably connected to the motor base via a rotating shaft. A pull rod is provided on the side of the feeding roller away from the swing arm and is elastically connected to the bottom of the swing arm via a spring.

[0008] Furthermore, in the aforementioned zipper feeding mechanism, the storage device includes a fixed shaft and a movable shaft arranged in parallel, and a plurality of zipper wheels are rotatably arranged on the surfaces of the fixed shaft and the movable shaft, respectively.

[0009] Furthermore, in the zipper feeding mechanism described above, the two ends of the fixed shaft are respectively mounted on the support frame via the first mounting base, and guide shafts are respectively provided on both sides inside the support frame. The two ends of the movable shaft are respectively slidably connected to the corresponding guide shafts via linear bearings.

[0010] Furthermore, in the zipper feeding mechanism described above, the two linear bearings are connected by a synchronization frame. The synchronization frame includes a synchronization beam with both ends connected to the corresponding linear bearings. An electronic ruler connected to the synchronization beam is provided on the side of the base away from the unloading roll.

[0011] Furthermore, in the aforementioned zipper feeding mechanism, the bottom of the synchronous beam is connected to a rotatably mounted synchronous shaft via several bearing seats. The electronic ruler is connected to one of the bearing seats. Gears are respectively mounted at both ends of the synchronous shaft, and racks that mesh with the gears are respectively mounted inside the support frame.

[0012] Furthermore, in the zipper feeding mechanism described above, a guide monitoring device is provided on the side of the support frame away from the feeding roller. The guide monitoring device includes a mounting frame, two guide roller groups disposed on the mounting frame, and a sensor disposed between the two guide roller groups.

[0013] Furthermore, in the zipper feeding mechanism described above, a locking device is provided between the sensor and the guide roller group at its upper end, and a variable guide wheel is provided at the top of the mounting frame.

[0014] Compared with the prior art, the feeding mechanism of the zipper of this utility model has a simple structure. The zipper between the feeding roll and the feeding roller is buffered in the storage device. When the spare roll replaces the feeding roll, the storage device still provides the zipper for the bag making machine without stopping the machine, thus improving production efficiency. Attached Figure Description To more clearly illustrate the technical solutions in the embodiments of this application or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments recorded in this application. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0015] Figure 1 The diagram shown is a structural schematic of the zipper feeding mechanism in a specific embodiment of this utility model.

[0016] Figure 2 The diagram shown is a transmission schematic of the feeding roll and the spare roll in a specific embodiment of this utility model.

[0017] Figure 3 The diagram shown is a schematic representation of the positions of the feeding roller and the coating roller in a specific embodiment of this utility model.

[0018] Figure 4 The diagram shown is a structural schematic of the storage device in a specific embodiment of this utility model.

[0019] Figure 5 The diagram shown is a schematic representation of the guiding monitoring device in a specific embodiment of this utility model.

[0020] Figure 6 The figure shown is a cross-sectional view of the fixed shaft and the movable shaft in a specific embodiment of this utility model. Detailed Implementation

[0021] The technical solutions of the present utility model will be described in detail below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those skilled in the art without creative effort are within the protection scope of the present utility model.

[0022] Combination Figures 1 to 6 As shown, a zipper feeding mechanism includes a horizontally arranged workbench 1 and a feeding roll 2, a spare roll 3, and a feeding roller 4 disposed on the workbench 1. The workbench 1 includes a base 11 and a support frame 12. The feeding roll 2 and the spare roll 3 are rotatably disposed on the side of the base 11, and the feeding roller 4 is rotatably disposed on one side of the support frame 12. A rubber-coated roller 5 is disposed on one side of the feeding roller 4 and abuts against the surface of the feeding roller 4. A material storage device 6 is disposed inside the support frame 12. The zipper on the feeding roll 2 or the spare roll 3 enters between the feeding roller 4 and the rubber-coated roller 5 after passing through the material storage device 6.

[0023] In this technical solution, the base of the workbench is assembled using conventional profiles, corner brackets, adjusting feet, and sheet metal parts. The support frame extends upwards from the base profile and is connected by crossbeam profiles. Conventional guide forks are also installed on the base and support frame to guide the zipper. The unloading roll and spare roll have the same structure and can directly utilize existing structures. They are rotatably mounted on the side of the base using conventional rotating shafts and bearing seats. The zipper on the unloading roll or spare roll enters between the feeding roller and the rubber-coating roller after passing through the storage device. The zipper is fed into the bag-making machine by the rubber-coating roller. When the zipper in the feed roll is used up, the spare roll becomes the new feed roll, and the zipper on it is connected to the end of the previous zipper. During this process, the zipper in the storage device continues to supply material to the bag-making machine without stopping the machine to wait. The empty feed roll is replaced and becomes the new spare roll. The feeding mechanism of this zipper has a simple structure. The zipper between the feed roll and the feed roller is buffered in the storage device. When the spare roll replaces the feed roll, the storage device still supplies zippers to the bag-making machine without stopping the machine, thus improving production efficiency.

[0024] For example, see Figure 2 As shown, the workbench 1 is equipped with an unwinding motor 21 and a spare motor 31 that drive the unwinding roll 2 and the spare roll 3 respectively.

[0025] In this technical solution, a mounting plate is installed inside the base by bolts, etc. The unwinding motor and the standby motor are conventional servo motors, etc., and are mounted on the mounting plate by conventional motor mounting brackets. The output shafts of the unwinding motor and the standby motor drive the corresponding unwinding roll and the standby roll by conventional belts, respectively.

[0026] For example, see Figures 1 to 5 As shown, the feeding roller 4 is connected to the output shaft of the feeding motor 41, the feeding motor 41 is mounted on the support frame 12 through the motor base 42, and the rubber-coated roller 5 is set on the motor base 42.

[0027] In this technical solution, the motor base is installed on the support frame using conventional bolts, etc. The feeding motor is a conventional speed-regulating motor, etc., and is fixed to the motor base with bolts. The output shaft of the feeding motor rotates through the motor base and is driven and connected to the feeding roller through conventional keys, etc. The feeding roller has an I-beam structure, including a cylinder and side plates at both ends of the cylinder. The rubber-coated roller is set between the two side plates of the feeding roller and elastically abuts against the surface of the cylinder, thereby pressing the zipper against the surface of the feeding roller. When the feeding roller rotates, it drives the zipper to feed.

[0028] For example, see Figures 1 to 5As shown, a swing rod 51 for mounting the rubber-coated roller 5 is provided inside the motor base 42. The rubber-coated roller 5 is rotatably connected to the swing rod 51. The top end of the swing rod 51 is rotatably connected to the motor base 42 via a rotating shaft. A pull rod 52 is provided on the side of the feeding roller 4 away from the swing rod 51 and is elastically connected to the bottom of the swing rod 51 via a spring (not shown).

[0029] In this technical solution, the rubber-coated roller has an existing structure. One end of its rotating shaft is rotatably connected to the swing arm via a conventional method such as a threaded connection. The swing arm has a conventional strip-shaped structure, with its top end rotatably connected to the motor base via a conventional pin, and its bottom end machined with a connecting boss. A first through hole is machined inside the connecting boss. The pull rod has a conventional shaft-shaped structure and is installed to the motor base via a conventional method such as a threaded connection. A second through hole is machined radially inside the pull rod. A conventional tension spring connects the first and second through holes, elastically abutting the rubber-coated roller against the surface of the feeding roller. That is, the rubber-coated roller and the feeding roller can elastically clamp the zipper, ensuring full contact between the zipper and the feeding roller and improving the stability of feeding. The motor base is provided with multiple threaded holes for installing the pull rod. The distance between adjacent threaded holes and the swing arm is different. By changing the installation position of the pull rod, the tension of the tension spring can be adjusted to meet the feeding requirements of zippers of different specifications.

[0030] For example, see Figure 1 and Figure 2 as well as Figures 4 to 6 As shown, the storage device 6 includes a fixed shaft 61 and a movable shaft 62 arranged in parallel, and a plurality of zipper wheels 63 are rotatably arranged on the surfaces of the fixed shaft 61 and the movable shaft 62 respectively.

[0031] In this technical solution, the fixed shaft and the moving shaft are conventional optical shaft structures, and the zipper wheels are conventional I-beam wheel structures. They are rotatably mounted on the corresponding fixed shaft or moving shaft via conventional bearings, etc. Adjacent zipper wheels are spaced equally by conventional spacers to avoid interfering with each other's rotation. The zipper wheels on the fixed shaft are designated as wheel 1, wheel 3, wheel 5... wheels. n The zipper wheels on the moving shaft are designated as wheel 2, wheel 4, wheel 6... wheels. n-1 n is a natural number ≥ 2, and the zipper is sequentially wound around wheel 1, wheel 2, wheel 3... n-1 ,wheel n The zipper is reciprocated between the fixed shaft and the moving shaft, thereby storing a preset length of zipper between the feed roll and the feed roller, so that the bag making machine can continue to be fed when the feed roll and the spare roll are used alternately.

[0032] For example, see Figure 1 and Figure 2 as well as Figures 4 to 6As shown, the two ends of the fixed shaft 61 are respectively mounted on the support frame 12 through the first mounting base. The two sides of the support frame 12 are respectively provided with guide shafts 64. The two ends of the movable shaft 62 are respectively slidably connected to the corresponding guide shafts 64 through linear bearings 65.

[0033] In this technical solution, the two ends of the fixed shaft are connected to the bottom surface of the crossbeam profile through the first mounting base, and the two ends of the guide shaft are fixed to the top of the base and the side of the support frame through the second mounting base and the third mounting base, respectively. The first mounting base, the second mounting base and the third mounting base are all conventional structures that can realize the installation of the corresponding fixed shaft and guide shaft. The fixed shaft and the moving shaft are set horizontally, and the guide shaft is set vertically. The two ends of the moving shaft are slidably connected to the guide shaft through conventional linear bearings, so that it can slide up and down along the guide shaft, that is, move relative to the fixed shaft. After the feeding roll is used up, the feeding roller continues to supply material to the bag making machine, dragging the moving shaft upward (towards the fixed shaft). The zipper in the storage device continues to supply material to the feeding roller. When the spare roll has finished replacing the feeding roll, the moving shaft gradually returns to its original position, and the storage device stores the zipper of the preset length again.

[0034] For example, see Figure 1 , Figure 2 , Figure 4 and Figure 5 As shown, two linear bearings 65 are connected to a synchronous frame 66. The synchronous frame 66 includes a synchronous crossbeam whose two ends are respectively connected to the corresponding linear bearings 65. An electronic ruler 7 connected to the synchronous crossbeam is provided on the side of the base 11 away from the unloading roll 2.

[0035] In this technical solution, the synchronization frame includes a synchronization beam and vertical plates set at both ends of the synchronization beam. The vertical plates are provided with mounting holes corresponding to the moving shaft, and the moving shaft is fixed by set screws, etc. The vertical plates are connected to the fixing seat of the linear bearing by conventional bolts, etc., and thus slidably connected to the guide shaft. The linear bearing and its fixing seat are existing structures. The electronic ruler is used to monitor the position of the synchronization frame, that is, to monitor the position of the moving shaft.

[0036] For example, see Figure 1 , Figure 2 , Figure 4 and Figure 5 As shown, the bottom of the synchronous beam is connected to a rotatable synchronous shaft 68 via several bearing seats 67. The electronic ruler 7 is connected to one of the bearing seats 67. Gears 681 are respectively provided at both ends of the synchronous shaft 68, and racks 682 that mesh with the gears 681 are provided in the support frame 12.

[0037] In this technical solution, when the moving shaft moves upward under force, it is driven to move by the synchronous frame. The gears at both ends of the synchronous shaft rotate through the rack, thereby ensuring the synchronous movement of both ends of the synchronous shaft. That is, the moving shaft is always parallel to the fixed shaft. The bearing housing directly utilizes the existing structure to ensure the smooth rotation of the synchronous shaft. A counterweight is set at the bottom of the synchronous beam. The bearing housing is fixed to the bottom of the counterweight by bolts, etc. The setting of the counterweight ensures that after the spare roll is connected, the moving shaft can move downward and reset under the action of gravity. Conventional limit blocks are set on the guide shaft to cooperate with the linear bearing and its fixed seat to limit the lowest position of the moving shaft. The limit blocks can also provide support for the moving shaft.

[0038] For example, see Figure 1 , Figure 2 , Figure 4 and Figure 5 As shown, a guide monitoring device 8 is provided on the side of the support frame 12 away from the feeding roller 4. The guide monitoring device 8 includes a mounting frame 81, two guide roller groups 82 disposed on the mounting frame 81, and a sensor 83 disposed between the two guide roller groups 82.

[0039] In this technical solution, the mounting frame is assembled from conventional profiles and sheet metal parts. The guide roller assembly includes a rotating guide roller and a pressure roller on one side of the guide roller. The zipper passes between the guide roller and the pressure roller. The sensor is a conventional fiber optic sensor, used to monitor whether the zipper is continuously feeding. The sensor is fixed to the mounting frame by a conventional sensor mounting base. A sensor bracket is provided on one side of the sensor mounting base. The sensor bracket has a through hole corresponding to the sensor. The zipper passes between the sensor and the sensor bracket. When the sensor does not detect the zipper, it means that the zipper in the feed roll has been used up. External warning lights and buzzers remind the user to connect a spare roll and replace the empty feed roll.

[0040] For example, see Figure 1 , Figure 2 , Figure 4 and Figure 5 As shown, a locking device 84 is provided between the sensor 83 and the guide roller group at its upper end, and a variable guide wheel 85 is provided at the top of the mounting bracket 81.

[0041] In this technical solution, the locking device includes a pressure seat fixed to the mounting frame and a locking cylinder. The piston rod of the locking cylinder is connected to a pressure head. The zipper passes between the pressure seat and the pressure head. When the sensor does not detect the zipper, the piston rod of the locking cylinder extends, driving the pressure head to clamp the zipper between the pressure head and the pressure seat, facilitating the docking of the spare zipper roll with the end of the previous zipper. At the same time, one end of the zipper is fixed, while the feeding roller at the other end continues to feed, thereby pulling the moving shaft upward and putting the zipper in the storage device into use. After the spare zipper roll and the end of the previous zipper are docked, the piston rod of the locking cylinder drives the pressure head to retract, and the spare roll begins to feed. The spare motor can unwind at a speed greater than the normal feeding speed. The moving shaft resets under the action of gravity, and the spare motor feeds normally. The variable guide wheel is used to guide the zipper from the guide roller assembly into the zipper wheel on the fixed shaft.

[0042] In actual use, the feeding motor drives the feeding roll to feed material normally. After passing through the guide monitoring device and the storage device, the zipper enters between the feeding roller and the coating roller and is sent into the bag making machine. At this time, the limit block on the guide shaft provides support for the moving shaft through the linear bearing and its fixed seat. The zipper of the set length is in the storage device. When the sensor does not detect the zipper, it means that the zipper in the feeding roll has been used up. The piston rod of the locking cylinder extends and drives the pressure head to clamp the zipper between the pressure head and the pressure seat, which facilitates the docking of the zipper on the spare roll with the end of the previous zipper. At the same time, one end of the zipper is fixed and the feeding roller at the other end continues to feed material, thereby pulling the moving shaft upward and putting the zipper in the storage device into use. After the zipper on the spare roll is docked with the end of the previous zipper, the piston rod of the locking cylinder drives the pressure head to retract and the spare roll is fed. The spare motor can unwind at a speed greater than the normal feeding speed. The moving shaft resets under the action of gravity. When the electronic ruler confirms that the moving shaft has reset, the spare motor resumes the normal feeding speed.

[0043] In summary, the feeding mechanism of this zipper has a simple structure. The zipper between the feeding roll and the feeding roller is buffered in the storage device. When the spare roll replaces the feeding roll, the storage device still provides the zipper for the bag making machine without stopping the machine, thus improving production efficiency.

[0044] It should be noted that, in this document, relational terms such as "first" and "second" are used only to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such a process, method, article, or apparatus. Without further limitations, an element defined by the phrase "comprising one..." does not exclude the presence of other identical elements in the process, method, article, or apparatus that includes said element.

[0045] The above description is only a specific embodiment of this application. It should be noted that for those skilled in the art, several improvements and modifications can be made without departing from the principle of this application, and these improvements and modifications should also be considered within the scope of protection of this application.

Claims

1. A zipper feeding mechanism, characterized in that, The device includes a horizontally arranged worktable and a feeding roll, a spare roll, and a feeding roller disposed on the worktable. The worktable includes a base and a support frame. The feeding roll and the spare roll are rotatably disposed on the side of the base. The feeding roller is rotatably disposed on one side of the support frame. A rubber-coated roller is disposed on one side of the feeding roller and abuts against the surface of the feeding roller. A material storage device is disposed inside the support frame. The zipper on the feeding roll or the spare roll enters between the feeding roller and the rubber-coated roller after passing through the material storage device.

2. The zipper feeding mechanism according to claim 1, characterized in that: The workbench is equipped with an unwinding motor and a standby motor that drive the unwinding roll and the standby roll, respectively.

3. The zipper feeding mechanism according to claim 1, characterized in that: The feeding roller is connected to the output shaft of the feeding motor, the feeding motor is mounted on the support frame via a motor mount, and the rubber-coated roller is disposed on the motor mount.

4. The zipper feeding mechanism according to claim 3, characterized in that: The motor base is provided with a swing arm for mounting the rubber-coated roller. The rubber-coated roller is rotatably connected to the swing arm. The top end of the swing arm is rotatably connected to the motor base via a rotating shaft. A pull rod is provided on the side of the feeding roller away from the swing arm and is elastically connected to the bottom of the swing arm via a spring.

5. The zipper feeding mechanism according to claim 1, characterized in that: The storage device includes a fixed shaft and a movable shaft arranged in parallel, and a number of zipper wheels are rotatably arranged on the surfaces of the fixed shaft and the movable shaft respectively.

6. The zipper feeding mechanism according to claim 5, characterized in that: Both ends of the fixed shaft are respectively mounted on the support frame via the first mounting base. Guide shafts are respectively provided on both sides inside the support frame. Both ends of the movable shaft are slidably connected to the corresponding guide shafts via linear bearings.

7. The zipper feeding mechanism according to claim 6, characterized in that: The two linear bearings are connected by a synchronization frame, which includes a synchronization beam at both ends connected to the corresponding linear bearings. An electronic ruler connected to the synchronization beam is provided on the side of the base away from the unloading roll.

8. The zipper feeding mechanism according to claim 7, characterized in that: The bottom of the synchronous beam is connected to a rotatably mounted synchronous shaft via several bearing seats. The electronic ruler is connected to one of the bearing seats. Gears are respectively provided at both ends of the synchronous shaft, and racks that mesh with the gears are provided in the support frame.

9. The zipper feeding mechanism according to claim 1, characterized in that: A guide monitoring device is provided on the side of the support frame away from the feeding roller. The guide monitoring device includes a mounting frame, two guide roller groups disposed on the mounting frame, and a sensor disposed between the two guide roller groups.

10. The zipper feeding mechanism according to claim 9, characterized in that: A locking device is provided between the sensor and the guide roller assembly at its upper end, and a variable guide wheel is provided at the top of the mounting frame.

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