Feeding mechanism and packaging bag making machine

Abstract

The utility model discloses a feeding mechanism and a packaging bag making machine, and the feeding mechanism can move back and forth between two adjacent stations of the packaging bag making machine and convey flaky base materials of packaging bags. The feeding mechanism comprises a conveying assembly, a guiding assembly and a clamping assembly, the clamping assembly is in transmission connection with the conveying assembly, and the conveying assembly drives the clamping assembly to reciprocate along the guiding assembly. The clamping assembly comprises a mounting base, a fixed clamping part and a movable clamping part, the movable clamping part can be arranged at one end of the mounting base in a reciprocating motion mode relative to the fixed clamping part in the vertical direction, and a clamping space for clamping the flaky base material is formed between the opposite ends of the movable clamping part and the fixed clamping part; when the clamping assembly clamps the sheet-shaped base material to move between the two adjacent stations, the motion trail of the geometric center of the sheet-shaped base material is a straight line parallel to the horizontal direction. The feeding mechanism can achieve accurate positioning and conveying of the flaky base materials, and the conveying efficiency is remarkably improved.

Description

Technical Field

[0001] The utility model relates to the technical field related to bag making, in particular to a feeding mechanism and a packaging bag making machine comprising the feeding mechanism. Background Art

[0002] Packaging bags are bags used to package goods. They come in a variety of materials, shapes, sizes, and uses to meet the protection, storage, transportation, and sales needs of different products. Packaging bags play a vital role in modern commerce. They not only protect goods from damage but also enhance brand image and attract consumer attention through design, printing, and material selection.

[0003] Take paper bags, for example. Their environmental and practicality have led to their widespread promotion and use in recent years, prompting the rapid development of fully automated paper bag forming technology. The production process for paper bags requires high conveying precision. Existing paper bag production machines typically use conveyor belts or suction cups to transport paper bags or sheets. These methods can easily cause the sheet to shift from one station to the next, impacting subsequent forming steps and even rendering the resulting paper bags wasteful.

[0004] Therefore, the feeding mechanism in the prior art has the problem that the sheet material is easily deviated and has poor conveying accuracy when conveying the sheet material. Utility Model Content

[0005] The utility model aims to solve the problems in the prior art that the sheet material is easily deflected and the conveying accuracy is poor when the sheet material is conveyed by the feeding mechanism.

[0006] To address the aforementioned technical issues, the present invention discloses a feeding mechanism capable of reciprocating between two adjacent workstations of a packaging bag making machine and conveying sheet-like base material for packaging bags. The two adjacent workstations are spaced horizontally apart. The feeding mechanism includes a conveyor assembly, a guide assembly, and a clamping assembly. The conveyor assembly and the guide assembly are spaced apart from each other and extend horizontally between the two adjacent workstations. The clamping assembly is in transmission connection with the conveyor assembly, which drives the clamping assembly to reciprocate along the guide assembly.

[0007] The clamping assembly includes a mounting seat, a fixed clamping portion and a movable clamping portion. The fixed clamping portion is fixedly arranged at one end of the mounting seat close to the sheet base material. The movable clamping portion can be reciprocated in the vertical direction relative to the fixed clamping portion and is arranged at one end of the mounting seat. A clamping space for clamping the sheet base material is formed between the opposite ends of the movable clamping portion and the fixed clamping portion, and when the clamping assembly clamps the sheet base material and moves between two adjacent workstations, the movement trajectory of the geometric center of the sheet base material is a straight line parallel to the horizontal direction.

[0008] By adopting the above technical solution, the feeding mechanism disclosed in the utility model clamps one end of the sheet base material through the fixed clamping part and the movable clamping part when conveying the sheet base material, and when the clamping assembly clamps the sheet base material and moves between two adjacent workstations, the movement trajectory of the geometric center of the sheet base material is a straight line parallel to the horizontal direction, which has high stability and accuracy. The fixed clamping part provides a stable support point, while the movable clamping part is adaptively adjusted as needed to jointly ensure that the sheet base material does not deviate or slip. By accurately controlling the movement and clamping force of the movable clamping part, the sheet base material can be accurately positioned and conveyed. In addition, the combined use of the fixed clamping part and the movable clamping part can significantly improve the conveying efficiency. By optimizing the design and layout of the clamping part, continuous and efficient conveying operations can be achieved, and it also has the advantage of a high degree of automation.

[0009] The present invention also discloses a feeding mechanism, wherein, when viewed from one side of the feeding mechanism toward the clamping assembly, a fixed clamping portion and a movable clamping portion are sequentially arranged along the height direction of the mounting base, and the opposing ends of the fixed clamping portion and the movable clamping portion each have a planar clamping surface. Furthermore, the mounting base includes a fixed connecting portion and a movable connecting portion fixedly connected to the conveying assembly, the fixed connecting portion being fixedly connected to the guide assembly, and the movable connecting portion being movably connected to the guide assembly along the guide assembly, and the conveying assembly drives the mounting base to reciprocate along the guide assembly.

[0010] With this technical solution, the fixed and movable clamping parts are arranged sequentially along the height of the mounting base. The clamping range and height of the fixed and movable clamping parts can be adjusted according to the size and shape of the sheet material. This design makes this conveying method suitable for sheet materials of different types and specifications. The planar clamping surfaces at the opposing ends of the fixed and movable clamping parts improve the safety, stability, and reliability of the clamping, reduce the equipment's failure rate, and ensure long-term stable operation.

[0011] The embodiment of the present invention further discloses a feeding mechanism, wherein when viewed from one side of the feeding mechanism, the fixed clamping portion and the movable clamping portion are integrally formed. The fixed clamping portion is closer to the conveying assembly than the movable clamping portion in the height direction, and the fixed clamping portion includes a fixed clamping platform, and a guide slope is further provided on one end of the fixed clamping platform close to the sheet base material.

[0012] The movable clamping portion includes a drive cylinder and a movable clamping platform. The drive cylinder is located on the side of the movable clamping platform away from the fixed clamping portion. The output end of the drive cylinder is transmission-connected to the movable clamping platform to drive the movable clamping platform to reciprocate in the height direction. Furthermore, a flexible clamping pad is provided on the side of the movable clamping platform adjacent to the fixed clamping platform.

[0013] With this technical solution, a guide ramp is also provided on the end of the fixed clamping table closest to the sheet material. This ramp guides the sheet material into the clamping area at the correct angle and position. Due to the presence of the ramp, when the sheet material contacts the ramp, it is subjected to a force along the ramp's direction. This force gradually adjusts the sheet material's posture until it is fully aligned with the clamping table. This design helps ensure that the sheet material maintains the correct position and posture during transport, thereby improving clamping accuracy and stability. The guide ramp also reduces friction between the sheet material and the clamping table.

[0014] The present invention also discloses a feeding mechanism, wherein the transmission assembly includes a drive motor, a driving pulley, a driven pulley, and a transmission belt. The drive motor is fixedly mounted on a frame of the packaging bag making machine, the driving pulley and the driven pulley are spaced apart horizontally, the power output end of the drive motor is connected to the driving pulley, and the transmission belt is wound around the driving pulley and the driven pulley, respectively, and extends parallel to the guide assembly. Furthermore, a fixed connection portion is fixedly mounted on one side of the transmission belt.

[0015] By adopting the above technical solution, the transmission assembly includes a driving motor, a driving pulley, a driven pulley and a transmission belt, which has the advantages of high efficiency, easy control and simple maintenance. In addition, this conveyor belt structure has the advantages of smooth transmission and wear resistance and durability.

[0016] Preferably, the guide assembly in the present invention includes a linear guide rail, which extends between two adjacent workstations, and the movable connecting portion is arranged on the linear guide rail so as to be reciprocatingly movable along the length direction of the linear guide rail.

[0017] With the above technical solution, the linear guide adopts rolling friction, with an extremely low friction coefficient and a small difference between dynamic and static friction, which has the advantage of high-precision positioning.

[0018] Further preferably, the conveying assembly, the guide assembly, and the clamping assembly are spaced apart in the horizontal direction, with the guide assembly being closer to the clamping assembly than the conveying assembly. The mounting base further comprises a clamping connection portion, with a fixed clamping portion and a movable clamping portion being disposed at an end of the clamping connection portion proximal to the sheet base material. Furthermore, the fixed connection portion, the movable connection portion, and the clamping connection portion are arranged in sequence in the horizontal direction and formed integrally.

[0019] More preferably, the fixed connection portion includes a fixed clamping claw that is clamped and fixed to the groove of the conveyor belt. In addition, the movable connection portion includes a sliding groove provided at the bottom of the mounting base and spaced apart on a side of the fixed clamping claw close to the clamping connection portion, and the sliding groove is slidably adapted to the linear guide rail.

[0020] By adopting the above technical solution, a fixed clamp is provided to stably engage and fix with the groove on the conveyor belt, and a slide groove and a linear guide rail are provided at the bottom of the mounting seat to adapt, so that the transmission accuracy and stability are improved.

[0021] More preferably, the feeding mechanisms disclosed in the present invention are arranged in pairs at intervals on both sides of the sheet base material in the width direction of the frame of the packaging bag making machine.

[0022] By adopting the above technical solution, the feeding mechanisms are arranged in pairs at intervals on both sides of the sheet base material, which can improve the feeding accuracy and stability.

[0023] The embodiment of the present utility model further discloses a feeding mechanism, wherein the material of the sheet base material includes any one of non-woven fabric material, paper material, plastic material, organic material or paper-like material.

[0024] The embodiment of the present utility model further discloses a packaging bag making machine, comprising any one of the above-mentioned feeding mechanisms, wherein two adjacent workstations comprise a first glue spraying workstation and a packaging bag forming workstation.

[0025] The first glue spraying station is located upstream of the feeding mechanism and is provided with a first glue spraying mechanism. The first glue spraying mechanism includes a nozzle arranged in a vertical direction toward the sheet-like base material.

[0026] The packaging bag forming station is located downstream of the feeding mechanism and is provided with a packaging bag forming mechanism. The packaging bag forming mechanism includes a forming mold arranged in a vertical direction. The forming mold is located above the sheet base material and can move back and forth in the vertical direction and press the sheet base material.

[0027] The beneficial effects of the utility model are:

[0028] The utility model discloses a feeding mechanism and a packaging bag making machine. The feeding mechanism is arranged between two adjacent workstations of the packaging bag making machine and reciprocates to convey a sheet base material for the packaging bag. The feeding mechanism includes a conveying assembly, a guide assembly, and a clamping assembly. The clamping assembly includes a mounting seat, a fixed clamping portion, and a movable clamping portion. When conveying the sheet base material, the feeding mechanism clamps one end of the sheet base material through the fixed clamping portion and the movable clamping portion. When the clamping assembly clamps the sheet base material and moves between the two adjacent workstations, the motion trajectory of the geometric center of the sheet base material is a straight line parallel to the horizontal direction, which has high stability and accuracy. The fixed clamping portion provides a stable support point, while the movable clamping portion is adaptively adjusted as needed, jointly ensuring that the base material does not deviate or slip. By precisely controlling the movement and clamping force of the movable clamping portion, accurate positioning and conveying of the sheet base material can be achieved. In addition, the combined use of the fixed clamping portion and the movable clamping portion can significantly improve conveying efficiency. By optimizing the design and layout of the clamping part, continuous and efficient conveying operations can be achieved, and it also has the advantage of a high degree of automation. BRIEF DESCRIPTION OF THE DRAWINGS

[0029] Figure 1 A schematic diagram of the overall structure of the feeding mechanism provided in an embodiment of the utility model;

[0030] Figure 2 A schematic diagram of the partial structure of the transmission assembly, guide assembly and clamping assembly provided in an embodiment of the utility model;

[0031] Figure 3 A schematic diagram of the partial structure of the clamping assembly provided in an embodiment of the utility model.

[0032] Description of reference numerals:

[0033] 100. Transmission component;

[0034] 110, driving motor; 120, driving pulley; 130, driven pulley; 140, transmission belt;

[0035] 200, guide assembly;

[0036] 300, clamping assembly;

[0037] 310, mounting seat;

[0038] 320, fixed clamping portion;

[0039] 321, fixed clamping platform; 322, guiding slope; 323, fixed clamping table;

[0040] 330, movable clamping portion;

[0041] 331. Driving cylinder; 332. Movable clamping platform; 333. Flexible clamping pad;

[0042] 340, fixed connection part; 350, movable connection part; 360, clamping connection part;

[0043] 370, auxiliary connecting plate;

[0044] 371. First connecting plate; 372. Second connecting plate; 373. Connecting bolts;

[0045] 380, positioning connecting plate;

[0046] 400, frame; 500, load plate; 600, smoothing brush;

[0047] A. The motion trajectory of the geometric center of the flaky base material. DETAILED DESCRIPTION

[0048] The production process of paper bags requires high conveying accuracy. Existing paper bag production machines generally use conveyor belts or suction cups to transport paper bags or sheets. When conveying by conveyor belts or suction cups, the conveyed sheets are prone to deviation when being transported from the previous station to the next station. For example, when conveying to the forming station, if the sheet is deviated, the bag shape of the formed paper bag may change after being punched and formed by the forming mold, and even affect the shape of the formed bag. Even when the sheet is deviated, the side edges of the paper bag cannot be bonded, causing the produced paper bags to become waste.

[0049] In order to solve the problem that sheets are easily deviated when being transported by paper bag production machines in the prior art, the utility model discloses a new feeding mechanism, which includes a conveying assembly, a guide assembly and a clamping assembly. The conveying assembly and the guide assembly are used to ensure that the feeding direction does not deviate and to ensure the feeding accuracy. The clamping assembly is used to clamp the sheet and also ensure that the clamped sheet does not deviate.

[0050] Next, the feeding mechanism disclosed in this application is described in detail:

[0051] This embodiment discloses a feeding mechanism that can reciprocate between two adjacent workstations (not shown in the figure) of a packaging bag making machine and convey sheet-like base materials (not shown in the figure) for packaging bags. The two adjacent workstations are spaced apart in the horizontal direction. Figure 1The feeding mechanism includes a conveying assembly 100, a guide assembly 200 and a clamping assembly 300. The conveying assembly 100 and the guide assembly 200 are spaced from each other and extended horizontally between two adjacent workstations; the clamping assembly 300 is transmission-connected to the conveying assembly 100, and the conveying assembly 100 drives the clamping assembly 300 to move back and forth along the guide assembly 200.

[0052] Specifically, in this embodiment, the two adjacent workstations can be any two adjacent workstations in the packaging bag making machine, for example, they can be between two adjacent spraying stations, or they can be set between the molding station and the previous station, or they can be set between the first spraying station and the molding station. As long as the sheet base material between the two stations is transferred by translation, technical personnel in this field can set and adjust it according to actual needs, and this embodiment does not make specific limitations on this.

[0053] It should be noted that the sheet base material includes any one of non-woven fabrics, paper materials, plastic materials, organic materials, or paper-like materials. For example, the paper-like material may be PP synthetic paper, PVC synthetic paper, aluminum foil, kraft paper composite materials, etc. The sheet base material can be configured and selected according to needs and is not specifically limited in this embodiment.

[0054] Furthermore, it should be noted that in the packaging bag making machine disclosed in this embodiment, the guide assembly 200 and the conveying assembly 100 are arranged on the frame 400, and the extension directions of the guide assembly 200 and the conveying assembly 100 are the same as the extension direction between two adjacent workstations. It should be noted that two adjacent workstations are correspondingly arranged on the frame 400, the clamping assembly 300 is transmission-connected to the conveying assembly 100, and the conveying assembly 100 drives the clamping assembly 300 to move back and forth along the guide assembly 200. The conveying assembly 100 can be a common motor and conveyor belt mechanism, or a motor and transmission screw mechanism, or a motor and gear rack mechanism. The guide assembly 200 can be set to a common guide rail, guide groove, etc. to ensure that the conveying assembly 100 transfers the clamping assembly 300 and the sheet base material from two adjacent workstations. Specifically, in this embodiment, it is transferred from the upstream workstation to the downstream workstation, and the guide assembly 200 can be used for guidance.

[0055] For more details, see Figure 3In this embodiment, the clamping assembly 300 includes a mounting seat 310, a fixed clamping portion 320, and a movable clamping portion 330. The fixed clamping portion 320 is fixedly arranged at one end of the mounting seat 310 close to the sheet base material. The movable clamping portion 330 can be reciprocated in the vertical direction relative to the fixed clamping portion 320 and is arranged at one end of the mounting seat 310. A clamping space for clamping the sheet base material is formed between the opposite ends of the movable clamping portion 330 and the fixed clamping portion 320. When the clamping assembly 300 clamps the sheet base material and moves between two adjacent workstations, the motion trajectory of the geometric center of the sheet base material is a straight line parallel to the horizontal direction. The motion trajectory of the geometric center of the sheet base material is as follows: Figure 1 Shown in direction A.

[0056] In this embodiment, two adjacent workstations are taken as an example, namely, the upstream workstation and the downstream workstation. Figure 1 ,exist Figure 1 The position where the carrier plate 500 is provided is the upstream station. Figure 1 The middle and downstream stations are where the clamping assembly 300 is located. It should be noted that Figure 1 The sheet base material is not shown in the figure, and the sheet base material is clamped by the clamping component 300 and moved from the upstream station to the downstream station. Specifically, in the production process of the packaging bag making machine, when the sheet base material is transported to the upstream station where the carrier plate 500 is located, the sheet base material is laid flat on the carrier plate 500 to perform corresponding actions, such as positioning, correcting deviation, spraying glue, etc., and then the clamping component 300 moves to the front end of the sheet base material, and the front end of the sheet base material is clamped by the fixed clamping part 320 and the movable clamping part 330. After stable clamping, it is moved along Figure 1 Move in the direction indicated by the arrow in direction A, and then move the sheet base material from the upstream station to the downstream station.

[0057] Further, see Figure 1 When the clamping assembly 300 clamps the sheet base material and conveys it horizontally, a smoothing brush is also provided above the conveying path. The smoothing brush can be set as a flexible contact object such as a brush. The bottom of the smoothing brush contacts the sheet base material, and the contact keeps the sheet base material flat during the conveying process.

[0058] It should be noted that, in this embodiment, the conveying component 100 and the guide component 200 are spaced apart from each other, which can avoid interference between the conveying component 100 and the guide component 200. When the clamping component 300 clamps the sheet base material and moves between two adjacent workstations, the motion trajectory of the geometric center of the sheet base material is a straight line parallel to the horizontal direction. That is to say, the sheet base material is clamped and transmitted by the clamping component 300 in a translational posture, and the posture of the sheet base material will not change during transportation.

[0059] The feeding mechanism disclosed in this embodiment clamps one end of the sheet base material through the fixed clamping part 320 and the movable clamping part 330 when conveying the sheet base material, and when the clamping assembly 300 clamps the sheet base material and moves between two adjacent workstations, the motion trajectory of the geometric center of the sheet base material is a straight line parallel to the horizontal direction, which has high stability and accuracy. The fixed clamping part 320 provides a stable support point, while the movable clamping part 330 is adaptively adjusted as needed to ensure that the base material does not deviate or slip. By precisely controlling the movement and clamping force of the movable clamping part 330, accurate positioning and conveying of the sheet base material can be achieved. In addition, the combined use of the fixed clamping part 320 and the movable clamping part 330 can significantly improve the conveying efficiency. By optimizing the design and layout of the clamping part, such as providing a guide slope, a clamping table, etc. on the clamping part, continuous and efficient conveying operations can be achieved, and it also has the advantage of a high degree of automation.

[0060] This embodiment also discloses a feeding mechanism. Figure 3 When viewed from one side of the feeding mechanism toward the clamping assembly 300, the fixed clamping portion 320 and the movable clamping portion 330 are arranged in sequence along the height direction of the mounting base 310. The opposing ends of the fixed clamping portion 320 and the movable clamping portion 330 each have a planar clamping surface. Furthermore, the mounting base 310 includes a fixed connecting portion 340 and a movable connecting portion 350 that are fixed together. The fixed connecting portion 340 is fixedly connected to the conveying assembly 100, and the movable connecting portion 350 is movably connected to the guide assembly 200 along the conveying assembly 100. The conveying assembly 100 drives the mounting base 310 to reciprocate along the guide assembly 200.

[0061] It should be noted that, in the present embodiment, the movable clamping portion 330 is located above the fixed clamping portion 320. In the actual design and production process, the fixed clamping portion 320 can also be located above the movable clamping portion 330, or the movable clamping portion 330 and the fixed clamping portion 320 can be arranged relative to each other in the horizontal direction. That is to say, the movable clamping portion 330 and the fixed clamping portion 320 can be adjusted according to the needs of the clamped object. Furthermore, the position of the movable clamping portion 330 on the fixed clamping portion 320 also needs to be adjusted according to actual needs. For example, in the present embodiment, a sheet-like base material is clamped, so the ends of the fixed clamping portion 320 and the movable clamping portion 330 facing each other have a flat clamping surface. For details, please refer to Figure 3The surface opposite to the fixed clamping part 320 and the movable clamping part 330 is the fixed clamping table 323. This flat clamping surface can increase the clamping area of ​​the sheet base material, making it easier to clamp and transport the sheet base material. However, when the movable clamping part 330 and the fixed clamping part 320 clamp other objects, such as clamping a block object with a certain thickness and a certain mass, a groove structure or other structure that increases friction can also be provided on the surface opposite to the fixed clamping part 320 and the movable clamping part 330. This embodiment does not make specific restrictions on this.

[0062] Specifically, in an implementation method disclosed in this embodiment, the spacing size between the fixed clamping part 320 and the movable clamping part 330 is preferably between 20 and 30 mm. For example, the spacing size can be 20 mm, 25 mm, 30 mm, etc. It should be noted that the fixed connection part 340 is used to fix the connection of the transmission component 100. For example, when the transmission component 100 is a screw transmission mechanism, the fixed connection part 340 can be set as a sliding seat fixedly connected to the screw slider. When the transmission component 100 is a transmission belt 140, the fixed connection part 340 can be set as a clamping claw fixedly connected to the belt, and the movable connection part 350 can be set as a slider adapted to the guide component 200, etc. Those skilled in the art can set and adjust it according to actual needs. Furthermore, the movable clamping part 330 can be driven by a cylinder, a linear motor, etc., and this embodiment does not specifically limit this.

[0063] With this structural design, the fixed clamping portion 320 and the movable clamping portion 330 are arranged sequentially along the height direction of the mounting base 310. The clamping range and clamping height of the fixed clamping portion 320 and the movable clamping portion 330 can be adjusted according to the size and shape of the sheet base material. This design makes this conveying method suitable for sheet base materials of different types and specifications. The planar clamping surfaces at the opposing ends of the fixed clamping portion 320 and the movable clamping portion 330 improve the safety, stability, and reliability of the clamping, reduce the equipment failure rate, and ensure long-term stable operation.

[0064] Next, the specific structure of the clamping assembly 300 disclosed in the present utility model is described in detail:

[0065] The embodiment of the present utility model also discloses a feeding mechanism, see Figure 3 , Figure 3 One specific implementation of the clamping assembly 300 disclosed in this embodiment is given. When viewed from one side of the feeding mechanism, the fixed clamping portion 320 and the movable clamping portion 330 are integrally formed. It should be noted that the fixed clamping portion 320 and the movable clamping portion 330 are integrally The shape and adjustable clamping space are for the convenience of clamping the sheet base material. Among them, the fixed clamping part 320 is closer to the conveying assembly 100 than the movable clamping part 330 in the height direction, that is, the fixed clamping part 320 is located below the movable clamping part 330 in the height direction, and the conveying assembly 100 is also located below the fixed clamping part 320. The fixed clamping part 320 includes a fixed clamping platform 321, which is a platform-shaped structure. The side opposite to the fixed clamping platform 321 and the movable clamping platform 323 is a fixed clamping table. The end of the fixed clamping platform 321 close to the sheet base material is also provided with a guiding slope 322. As mentioned above, because of the sheet base material to be clamped, the opposite surfaces of the fixed clamping platform 321 and the movable clamping platform 332 are both flat clamping table surfaces. The guiding slope 322 on the fixed clamping platform 321 is used to assist in guiding the sheet base material.

[0066] Specifically, the inclination angle of the guiding slope 322 forms an angle with the horizontal plane, and preferably the angle is in the range of 10 to 30 degrees, for example, the angle is 10 degrees, 25 degrees, 30 degrees, etc., which is not specifically limited in this embodiment.

[0067] The movable clamping unit 330 includes a drive cylinder 331 and a movable clamping platform 332. The drive cylinder 331 is located on the side of the movable clamping platform 332 away from the fixed clamping unit 320. The output end of the drive cylinder 331 is transmission-connected to the movable clamping platform 332 to drive the movable clamping platform 332 to reciprocate in the height direction. Furthermore, a flexible clamping pad 333 is provided on the side of the movable clamping platform 332 near the fixed clamping platform 321. This provides a more stable and reliable clamping of the sheet material.

[0068] The material of the flexible clamping pad 333 on the side of the movable clamping table 332 close to the fixed clamping table 321 can be common flexible materials such as rubber, foam, and foam. The guide slope 322 set at the end of the fixed clamping table 321 close to the sheet base material can guide the sheet base material into the clamping area at the correct angle and position. Due to the presence of the slope, when the sheet base material contacts the slope, it will be subjected to a force along the slope. This force will cause the sheet base material to gradually adjust its posture until it is completely in contact with the clamping table. This design helps to ensure that the sheet base material always maintains the correct position and posture during the transportation process, thereby improving the accuracy and stability of the clamping. The design of the guide slope 322 can also reduce the friction between the sheet base material and the clamping table.

[0069] The embodiment of the present utility model also discloses a feeding mechanism, see Figure 1 as well as Figure 2The transmission assembly 100 includes a drive motor 110, a driving pulley 120, a driven pulley 130, and a transmission belt 140. The drive motor 110 is fixedly mounted on the frame of the packaging bag making machine. The driving pulley 120 and the driven pulley 130 are spaced apart in the horizontal direction. The power output end of the drive motor 110 is connected to the driving pulley 120. The transmission belt 140 is respectively wound around the driving pulley 120 and the driven pulley 130 and extends parallel to the guide assembly 200. The fixed connection portion 340 is fixedly mounted on one side of the transmission belt 140.

[0070] With the above-mentioned structural design, the transmission component 100 includes a driving motor 110, a driving pulley 120, a driven pulley 130 and a transmission belt 140, which has the advantages of high efficiency, easy control and simple maintenance. In addition, this transmission belt structure has the advantages of smooth transmission and wear resistance and durability.

[0071] Preferably, the guide assembly 200 in the present invention includes a linear guide rail, which extends between two adjacent workstations, and the movable connecting portion 350 is arranged on the linear guide rail so as to be reciprocatingly movable along the length direction of the linear guide rail.

[0072] With the above structural design, the linear guide rail can adopt rolling friction, with an extremely low friction coefficient, and the difference between the dynamic friction and static friction of the linear guide rail is small, which has the advantage of high-precision positioning.

[0073] Further preferably, the conveying assembly 100, the guide assembly 200, and the clamping assembly 300 are arranged horizontally at intervals, with the guide assembly 200 being closer to the clamping assembly 300 than the conveying assembly 100. The mounting base 310 further includes a clamping connection portion 360, and the fixed clamping portion 320 and the movable clamping portion 330 are disposed at the end of the clamping connection portion 360 near the sheet base material. Furthermore, the fixed connection portion 340, the movable connection portion 350, and the clamping connection portion 360 are arranged in sequence horizontally and formed integrally. Specifically, in this embodiment, the fixed connection portion 340, the movable connection portion 350, and the clamping connection portion 360 can be integrally formed by casting, or can be fixedly connected as one piece by bolts or other structures.

[0074] For further explanation, please see Figure 3An auxiliary connecting plate 370 is also provided at the front end of the fixed connecting part 340. The auxiliary connecting plate 370 is used to assist in connecting the fixed connecting part 340 and the conveyor belt 140. The auxiliary connecting plate 370 is in a "Z" shape. The auxiliary connecting plate 370 includes a first connecting plate 371 and a second connecting plate 372. A transition plate is provided between the first connecting plate 371 and the second connecting plate 372. The first connecting plate 371, the second connecting plate 372 and the transition plate are formed as one piece, wherein the transition plate is vertical, the first connecting plate 371 and the second connecting plate 372 are horizontal, the first connecting plate 371 is fixedly connected to the conveyor belt 140 by bolts, and the second connecting plate 372 is fixedly connected to the fixed connecting part 340 by connecting bolts 373, and a positioning connecting plate 380 is also provided on the fixed connecting part 340. The positioning connecting plate 380 is used to fix and connect other components.

[0075] With this structural setting, the conveying component 100, the guide component 200 and the clamping component 300 are more compact, which is conducive to space saving. The integrated design reduces connecting parts and complex structures. The design of the guide component 200 close to the clamping component 300 allows the sheet base material to be more accurately guided to the clamping position during the conveying process, thereby improving the accuracy and efficiency of clamping. The fixed clamping part 320 and the movable clamping part 330 are arranged at the end of the clamping connection part 360 close to the sheet base material. This design can ensure that during the clamping process, the sheet base material is subjected to a uniform and stable clamping force, thereby avoiding quality problems caused by unstable clamping.

[0076] More preferably, the fixed connection portion 340 includes a fixed clamping claw (not shown in the figure), which is fixed by clamping with a groove (not shown in the figure) of the conveyor belt 140. In addition, the movable connection portion 350 includes a slide groove provided at the bottom of the mounting seat 310 and spaced apart on the side of the fixed clamping claw close to the clamping connection portion 360, and the slide groove is slidably adapted to the linear guide rail. The clamping fixation of the fixed clamping claw to the groove of the conveyor belt 140 has the advantages of strong stability and easy installation, and the slide groove and the linear guide rail are slidably adapted, which has the advantages of high flexibility, smooth operation and easy maintenance. Those skilled in the art should understand that the fixed connection portion 340 can also be provided with other structures for fixed clamping, which will not be described in detail in this embodiment.

[0077] More preferably, the feeding mechanisms disclosed in the present invention are arranged in pairs at intervals on both sides of the sheet base material in the width direction of the frame of the packaging bag making machine. With this structural design, the feeding mechanisms are arranged in pairs at intervals on both sides of the sheet base material, which can improve feeding accuracy and stability.

[0078] The implementation of this embodiment further discloses a packaging bag making machine, comprising any one of the above-mentioned feeding mechanisms, wherein two adjacent workstations comprise a first glue spraying station and a packaging bag forming station.

[0079] The first glue spraying station is located upstream of the feeding mechanism and is provided with a first glue spraying mechanism. The first glue spraying mechanism includes a nozzle arranged in a vertical direction toward the sheet-like base material.

[0080] The packaging bag forming station is located downstream of the feeding mechanism and is provided with a packaging bag forming mechanism. The packaging bag forming mechanism includes a forming mold arranged in a vertical direction. The forming mold is located above the sheet base material and can move back and forth in the vertical direction and press the sheet base material.

[0081] In summary, the utility model discloses a feeding mechanism and a packaging bag making machine. The feeding mechanism is arranged between two adjacent workstations of the packaging bag making machine and reciprocates to convey the sheet base material of the packaging bag. The feeding mechanism includes a conveying assembly 100, a guide assembly 200 and a clamping assembly 300. The clamping assembly 300 includes a mounting seat 310, a fixed clamping portion 320 and a movable clamping portion 330. When conveying the sheet base material, the feeding mechanism clamps the sheet base material through the fixed clamping portion 320 and the movable clamping portion 330. One end of the material, and when the clamping assembly 300 clamps the sheet base material and moves between two adjacent workstations, the movement trajectory of the geometric center of the sheet base material is a straight line parallel to the horizontal direction, with high stability and accuracy. The fixed clamping part 320 provides a stable support point, while the movable clamping part 330 is adaptively adjusted as needed to ensure that the base material does not shift or slip. By precisely controlling the movement and clamping force of the movable clamping part 330, accurate positioning and transportation of the sheet base material can be achieved. In addition, the combined use of the fixed clamping part 320 and the movable clamping part 330 can significantly improve transportation efficiency. By optimizing the design and layout of the clamping part, continuous and efficient transportation operations can be achieved, and it also has the advantage of a high degree of automation.

[0082] Finally, the working process of the feeding mechanism disclosed in the present invention is briefly described:

[0083] First, the sheet base material is spread on the carrier plate 500 at the first glue spraying station of the packaging bag making machine, and then glue is sprayed by the nozzle of the first glue spraying mechanism. After the glue is sprayed, one end of the sheet base material is clamped by the fixed clamping part 320 and the movable clamping part 330 of the feeding mechanism. Specifically, the clamping assembly 300 first approaches one end of the sheet base material, and then the guide slope 322 of the fixed clamping table 321 guides the sheet base material into the clamping area at the correct angle and position, and then the output end of the driving cylinder 331 drives the movable clamping table 332 to move toward the fixed clamping table 321 until the flexible clamping pad 333 is closed. The sheet base material is clamped to complete the clamping and conveying of the sheet base material. Because the feeding mechanism disclosed in the present invention is provided with a pair, the clamping assembly 300 of the feeding mechanism can stably clamp one end of the sheet base material and can smoothly convey and transport it. Then the driving motor 110 of the conveying assembly 100 drives the conveying belt 140 to transmit, and the conveying belt 140 drives the clamping assembly 300 and the sheet base material to be translated along the extension direction of the guide assembly 200 to the packaging bag forming station. During the process of moving the sheet base material, the motion trajectory of the geometric center of the sheet base material is as follows: Figure 1 As shown in the direction A, the sheet material is precisely positioned and conveyed through the control of the motor and conveyor belt. When the clamping assembly 300 moves the sheet material between the first glue spraying station and the bag forming station, the geometric center of the sheet material moves in a straight line parallel to the horizontal direction. It should be noted that the movement of the clamping assembly 300 holding the sheet material is a one-way movement from the first glue spraying station to the bag forming station. Finally, at the bag forming station, the sheet material is punched into a "U" shape by the forming die, and the side edges are bonded to achieve the three-dimensional formation of the bag.

[0084] It should be noted that, in addition to the implementation methods of the present invention described in the above-mentioned specific embodiments, those skilled in the art can easily understand other advantages and effects of the present invention from the contents disclosed in this specification. Although the description of the present invention will be introduced in conjunction with the preferred embodiment, this does not mean that the features of this utility model are limited to this implementation method. On the contrary, the purpose of introducing the utility model in conjunction with the implementation method is to cover other options or modifications that may be extended based on the claims of the present utility model. In order to provide an in-depth understanding of the present utility model, the above description contains many specific details, and the present utility model can also be implemented without using these details. In addition, in order to avoid confusion or blurring the focus of the present utility model, some specific details will be omitted in the description. It should be noted that, in the absence of conflict, the embodiments of the present utility model and the features in the embodiments can be combined with each other.

[0085] It should be noted that in this specification, similar reference numerals and letters denote similar items in the following drawings, and therefore, once an item is defined in one drawing, it does not need to be further defined or explained in subsequent drawings.

[0086] In the description of this embodiment, it should be noted that the terms "upper", "lower", "inner", "bottom", etc. indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, or are the orientations or positional relationships in which the utility model product is usually placed when in use. They are only for the convenience of describing the utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation. Therefore, they cannot be understood as a limitation on the utility model.

[0087] The terms “first”, “second”, etc. are only used for distinguishing descriptions and should not be understood as indicating or implying relative importance.

[0088] In the description of this embodiment, it should be noted that, unless otherwise specified or limited, the terms "disposed," "connected," and "connected" should be understood broadly. For example, they can refer to fixed connections, detachable connections, or integral connections; mechanical connections or electrical connections; direct connections or indirect connections through an intermediate medium; and internal connections between two components. Those skilled in the art will understand the specific meanings of the above terms in this embodiment based on specific circumstances.

[0089] Although the present invention has been illustrated and described with reference to certain preferred embodiments of the present invention, it should be understood by those skilled in the art that the above description is provided to further illustrate the present invention in conjunction with specific embodiments, and that the present invention should not be construed as being limited to these descriptions. Those skilled in the art may make various changes in form and detail, including simple deductions or substitutions, without departing from the spirit and scope of the present invention.

Claims

1. A feeding mechanism, characterized in that: The feeding mechanism can reciprocate between two adjacent workstations of the packaging bag making machine and convey the sheet base material of the packaging bag, and the two adjacent workstations are arranged at intervals in the horizontal direction; The feeding mechanism includes a conveying assembly, a guide assembly, and a clamping assembly. The conveying assembly and the guide assembly are spaced apart from each other and are arranged horizontally between two adjacent workstations. The clamping assembly is in transmission connection with the conveying assembly, and the conveying assembly drives the clamping assembly to reciprocate along the guide assembly. The clamping assembly includes a mounting seat, a fixed clamping portion, and a movable clamping portion, wherein the fixed clamping portion is fixedly arranged at one end of the mounting seat close to the sheet base material, and the movable clamping portion is reciprocally movable relative to the fixed clamping portion in a vertical direction at the one end of the mounting seat, and a clamping space for clamping the sheet base material is formed between the ends of the movable clamping portion and the fixed clamping portion that are opposite to each other; and When the clamping assembly clamps the sheet-like base material and moves between the two adjacent workstations, the movement trajectory of the geometric center of the sheet-like base material is a straight line parallel to the horizontal direction.

2. The feeding mechanism according to claim 1, wherein: When viewed from one side of the feeding mechanism toward the clamping assembly, the fixed clamping portion and the movable clamping portion are sequentially arranged along the height direction of the mounting seat, and opposite ends of the fixed clamping portion and the movable clamping portion both have planar clamping surfaces; and The mounting seat includes a fixed connecting portion and a movable connecting portion fixed together, the fixed connecting portion is fixedly connected to the transmission component, and the movable connecting portion is movably connected to the guide component along the guide component, and the transmission component drives the mounting seat to move back and forth along the guide component.

3. The feeding mechanism according to claim 2, characterized in that: When viewed from one side of the feeding mechanism, the fixed clamping portion and the movable clamping portion are integrally shape; among them The fixed clamping portion is closer to the conveying assembly than the movable clamping portion in the height direction, the fixed clamping portion includes a fixed clamping platform, and the fixed clamping platform is further provided with a guiding slope at one end close to the sheet base material; The movable clamping portion includes a driving cylinder and a movable clamping platform, the driving cylinder is arranged on a side of the movable clamping platform away from the fixed clamping portion, and the output end of the driving cylinder is transmission-connected to the movable clamping platform to drive the movable clamping platform to reciprocate along the height direction; and A flexible clamping pad is further provided on one side of the movable clamping platform close to the fixed clamping platform.

4. The feeding mechanism according to claim 2, wherein: The transmission assembly includes a driving motor, a driving pulley, a driven pulley and a transmission belt; in The driving motor is fixedly arranged on the frame of the packaging bag making machine, the driving pulley and the driven pulley are arranged at intervals in the horizontal direction, the power output end of the driving motor is connected to the driving pulley, and the conveyor belt is respectively wrapped around the driving pulley and the driven pulley and extends parallel to the guide assembly; and the fixed connection part is fixedly arranged on one side of the conveyor belt.

5. The feeding mechanism according to claim 4, characterized in that: The guide assembly includes a linear guide rail extending between the two adjacent workstations, and the movable connecting portion is arranged on the linear guide rail so as to be reciprocatingly movable along the length direction of the linear guide rail.

6. The feeding mechanism according to claim 5, characterized in that: The conveying assembly, the guide assembly, and the clamping assembly are spaced apart in a horizontal direction, and the guide assembly is closer to the clamping assembly than the conveying assembly; and The mounting seat also includes a clamping connection portion, the fixed clamping portion and the movable clamping portion are arranged at the end of the clamping connection portion close to the sheet base material; and the fixed connection portion, the movable connection portion, and the clamping connection portion are arranged in sequence along the horizontal direction and formed into a whole.

7. The feeding mechanism according to claim 6, characterized in that: in The fixed connection portion includes a fixed clamping claw, and the fixed clamping claw is clamped and fixed with the groove of the conveyor belt; and The movable connection portion includes a slide groove arranged at the bottom of the mounting seat and spaced apart on a side of the fixed clamping claw close to the clamping connection portion, and the slide groove is slidably adapted to the linear guide rail.

8. The feeding mechanism according to claim 1, wherein: In the width direction of the frame of the packaging bag making machine, the feeding mechanisms are arranged in pairs at intervals on both sides of the sheet base material.

9. The feeding mechanism according to any one of claims 1 to 8, characterized in that: The sheet-like base material includes any one of non-woven fabric material, paper material, plastic material, organic material or paper-like material.

10. A packaging bag making machine, characterized in that: The feeding mechanism comprises the feeding mechanism according to any one of claims 1 to 9, wherein the two adjacent workstations comprise a first glue spraying workstation and a packaging bag forming workstation; The first glue spraying station is located upstream of the feeding mechanism and is provided with a first glue spraying mechanism, wherein the first glue spraying mechanism includes a nozzle arranged in a vertical direction toward the sheet-like base material; The packaging bag forming station is located downstream of the feeding mechanism and is provided with a packaging bag forming mechanism. The packaging bag forming mechanism includes a forming mold arranged in a vertical direction. The forming mold is located above the sheet base material and can move back and forth in the vertical direction and press the sheet base material.

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