Receiving self-sewing cutting structure of bag making machine

Abstract

The utility model discloses a material receiving and self-sewing cutting structure of a bag making machine. The material receiving and self-sewing cutting structure comprises a feeding frame and a material receiving and sewing device. The material receiving and sewing device comprises a material receiving frame, a material receiving seat, a pressing driving piece, a pressing block, a heating assembly and a cutting assembly. The material receiving frame and the material receiving base are arranged in the width direction of the feeding frame. The pressing driving piece can move the pressing block towards the material receiving seat and tightly press the two plastic roll materials between the pressing block and the material receiving seat; the heating assembly can sew the two plastic roll materials in a hot melting manner; the cutting assembly is arranged on the side, away from the feeding device, of the pressing block and used for cutting the two plastic roll materials. According to the feeding frame, overlapping, hot melting sewing and cutting of a previous raw material winding drum and a next raw material winding drum can be directly and rapidly completed on the feeding frame, sewn plastic roll materials are returned to the feeding roller to be fed, the material changing and cutting efficiency is obviously improved, and the production efficiency is effectively improved.

Description

Technical Field

[0001] The utility model relates to the technical field of bag-making equipment, in particular to a material splicing and self-sewing and cutting structure of a bag-making machine. Background Art

[0002] The bag making machine in the prior art generally includes a loading device, a feeding device, a hot cutting device, a cold pressing device, a conveying device, a folding device and a discharging device, etc. The plastic coil with the raw material reel installed can be fed forward and automatic operations such as cutting, cold pressing and folding can be performed.

[0003] The plastic coils at both ends of each raw material roll often have an irregular end. During the continuous automated production process, when replacing the raw material roll, the operator needs to first stop the machine, then overlap the end of the previous raw material roll with the beginning of the next raw material roll, cut it, and then combine it by hot pressing. After the two raw material rolls are connected, the operator can continue feeding and adjust the position of the plastic coils in each device before continuing production. Due to the large width of the bag making machine, it is difficult for the operator to perform operations such as overlapping and cutting. In addition, the levelness of the two paper rolls after hot pressing is also average, resulting in low efficiency in the raw material roll replacement and cutting operations. Therefore, further improvement is needed. Utility Model Content

[0004] The utility model aims to solve at least one of the technical problems in the prior art. To this end, the utility model proposes a material splicing and self-sewing and cutting structure for a bag making machine.

[0005] An embodiment of the present invention adopts a technical solution to solve its technical problem: a material splicing and self-stitching and cutting structure for a bag making machine, wherein the material splicing and sewing device includes a material splicing frame, a material splicing seat, a pressing drive, a pressure block, a heating component and a cutting component; the material splicing frame and the material splicing seat are arranged along the width direction of the feeding frame; the pressing drive can move the pressure block toward the material splicing seat and press two plastic coils between the pressure block and the material splicing seat; the heating component can hot-melt sew the two plastic coils; the cutting component is arranged on the side of the pressure block away from the feeding device, and is used to cut the two plastic coils.

[0006] Optionally, the feeding rack is provided with a first guide roller at the feeding end; a material splicing and sewing area is provided on the rear side of the first guide roller; the material splicing rack and the material splicing seat are arranged in the material splicing and sewing area; the height of the material splicing seat is higher than the height of the first guide roller.

[0007] Optionally, a second guide roller is further provided at the feeding end of the feeding rack; the second guide roller is located in front of the first guide roller, and the height of the second guide roller is lower than that of the first guide roller.

[0008] Optionally, the heating component is an electric heating wire extending along the material receiving seat; the pressing block is provided with a rubber strip; the rubber strip can be arranged to abut the heating wire.

[0009] Optionally, a vertical connecting column is provided above the rubber pressure strip, the vertical connecting column is passed through the pressure block, and a tension spring is provided on the vertical connecting column sleeve, which can press the rubber pressure strip toward the heating wire.

[0010] Optionally, the material receiving seat is provided with a flying knife groove; the flying knife groove is arranged along the extension direction of the material receiving seat and is located on the side of the pressing block away from the loading device; the cutting assembly includes a blade and a flying knife drive assembly; the flying knife drive assembly can make the blade move along the flying knife groove.

[0011] Optionally, a flying knife guide rail and a flying knife slide are provided on the bottom side of the material receiving seat, and the blade is detachably provided on the flying knife slide; the flying knife driving assembly can enable the flying knife slide to slide along the flying knife guide rail.

[0012] Optionally, the flying knife driving assembly is a telescopic rod structure arranged parallel to the flying knife guide rail, and its movable end is connected to the flying knife slide.

[0013] Optionally, the pressing block is provided with a protective groove; the protective groove is arranged along the extension direction of the material receiving seat and is located above the flying knife groove; when the pressing block moves toward the material receiving seat and is pressed, the protective groove cover is provided above the flying knife groove, and the top end of the blade is located in the protective groove.

[0014] Optionally, a plurality of the material joining and sewing devices may be provided along the width direction of the feed rack.

[0015] The beneficial effects of the present invention are as follows: a material splicing and sewing device is provided at the feeding end of the feeding rack. When the raw material roll needs to be replaced, the end of the previous raw material roll is overlapped with the head end of the next raw material roll, and the two are passed through between the splicing seat and the pressing block, and are pressed by the pressing block. The two plastic rolls are hot-melt-seamed by the heating component. At the same time, the two plastic rolls are cut by the cutting component on the side of the pressing block away from the feeding device. The cut plastic roll waste can be directly taken out from this side. After the pressing of the pressing block is released, the hot-melt-seamed part of the two plastic rolls is separated from the side close to the feeding device and returned to the feeding roller for feeding and subsequent operations. The present invention can quickly complete the overlapping, hot-melt-seaming and cutting of the previous raw material roll and the next raw material roll directly on the feeding rack, and return the stitched plastic roll to the feeding roller for feeding. The efficiency of material replacement and cutting is significantly improved, and the production efficiency is effectively improved.

[0016] In order to make the above-mentioned objects, features and advantages of the present invention more obvious and easy to understand, preferred embodiments are given below and described in detail with reference to the accompanying drawings. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] The above and / or additional aspects and advantages of the present invention will become apparent and readily understood from the description of the embodiments in conjunction with the following drawings, in which:

[0018] Figure 1 This is a structural diagram of the self-stitching and cutting structure of the utility model;

[0019] Figure 2 This is a schematic diagram of the state of two plastic coils being cut according to the present invention;

[0020] Figure 3 This is a structural diagram of the material splicing and sewing device of the utility model;

[0021] Figure 4 for Figure 3 Another structural schematic diagram of the center seam sewing device;

[0022] Figure 5 for Figure 3 Cross-sectional view of the center seam sewing device.

[0023] Description of main component symbols:

[0024] 10. Feeding rack; 11. Feeding roller; 12. First guide roller; 13. Material splicing and sewing area; 14. Second guide roller; 20. Material splicing and sewing device; 21. Material splicing rack; 22. Material splicing seat; 221. Flying knife groove; 222. Flying knife protective cover; 23. Pressing drive component; 24. Pressing block; 241. Rubber strip; 242. Protective groove; 243. Vertical connecting column; 25. Heating component; 26. Cutting component; 261. Blade; 262. Flying knife drive component; 263. Flying knife guide rail; 264. Flying knife slide; 30. Loading device. DETAILED DESCRIPTION

[0025] This section will describe in detail the specific embodiments of the present invention. The preferred embodiments of the present invention are shown in the accompanying drawings. The purpose of the accompanying drawings is to supplement the description of the text part of the specification with graphics, so that people can intuitively and vividly understand each technical feature and overall technical solution of the present invention, but it cannot be understood as a limitation on the scope of protection of the present invention.

[0026] In the description of this utility model, "above," "below," and "within" are understood to be exclusive of the number indicated, while "above," "below," and "within" are understood to be inclusive of the number indicated. The use of "first" and "second" is solely for the purpose of distinguishing technical features and is not to be construed as indicating or implying relative importance, or implicitly specifying the number or order of the technical features indicated.

[0027] In the description of the present invention, it should be understood that descriptions involving orientations, such as up, down, front, back, left, right, etc., indicating orientations or positional relationships, are based on the orientations or positional relationships shown in the accompanying drawings. They are only for the convenience of describing the present invention 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 limitations on the present invention.

[0028] In this utility model, unless otherwise expressly defined, terms such as "disposed," "installed," and "connected" should be interpreted broadly. For example, they may refer to direct connection or indirect connection through an intermediate medium; fixed connection or detachable connection or integral molding; mechanical connection; internal communication between two components or interaction between two components. Those skilled in the art can reasonably determine the specific meanings of these terms in this utility model based on the specific content of the technical solution.

[0029] Example

[0030] Reference Figures 1 to 5 The utility model proposes a material splicing and self-sewing and cutting structure for a bag-making machine, comprising: a feeding frame 10 and a material splicing and sewing device 20;

[0031] The feeding rack 10 is provided with a plurality of staggered feeding rollers 11, and a loading device 30 is provided at the feeding end of the feeding rack 10; a material splicing and sewing device 20 is provided on the feeding rack 10;

[0032] The material splicing and sewing device 20 includes a material splicing frame 21, a material splicing seat 22, a pressing drive 23, a pressure block 24, a heating component 25 and a cutting component 26; the material splicing frame 21 and the material splicing seat 22 are arranged along the width direction of the feeding frame 10; the pressing drive 23 can move the pressure block 24 toward the material splicing seat 22, and press the two plastic coils between the pressure block 24 and the material splicing seat 22; the heating component 25 can hot-melt and sew the two plastic coils; the cutting component 26 is arranged on the side of the pressure block 24 away from the loading device 30, and is used to cut the two plastic coils.

[0033] In the present invention, a splicing and sewing device 20 is provided at the feeding end of the feeding rack 10. When the raw material roll needs to be replaced, the end of the previous raw material roll is overlapped with the head end of the next raw material roll, and passed through between the splicing seat 22 and the pressing block 24. The pressing block 24 is used to press, and the two plastic coils are hot-melt-seamed by the heating component 25. At the same time, the two plastic coils are cut by the cutting component 26 on the side of the pressing block 24 away from the feeding device 30. The cut plastic coil waste can be directly taken out from this side. After that, after the pressing of the pressing block 24 is released, the hot-melt-sealed part of the two plastic coils is detached from the side close to the feeding device 30 and returned to the feeding roller 11 for feeding and subsequent operation. The utility model can quickly complete the overlapping, hot-melt sewing and cutting of the previous raw material roll and the next raw material roll directly on the feeding rack 10, and return the sewn plastic coil to the feeding roller 11 for feeding, which significantly improves the efficiency of material changing and cutting, and effectively improves production efficiency.

[0034] See also Figure 2 In this embodiment, the feed frame 10 is provided with a first guide roller 12 at the feed end; a splicing and sewing area 13 is provided behind the first guide roller 12; a splicing frame 21 and a splicing seat 22 are mounted on the splicing and sewing area 13; and the splicing seat 22 is higher than the first guide roller 12. The first guide roller 12 is located in front of the splicing and sewing area 13 and lower than the splicing seat 22. After the plastic coil at the end of the preceding material roll and the plastic coil at the beginning of the succeeding material roll are superimposed, they can pass upward from under the first guide roller 12 and then pass over the splicing seat 22, thus serving as a guide.

[0035] Furthermore, the feed end of the feed frame 10 is also equipped with a second guide roller 14; the second guide roller 14 is located in front of the first guide roller 12 and is lower than the first guide roller 12. The second guide roller 14 is located below the front of the first guide roller 12. The plastic coil at the beginning of the next raw material roll can be wound below the second guide roller 14 and then above the first guide roller 12. This allows the plastic coil of the next raw material roll to be placed only on the first guide roller 12, thereby firmly adhering to and guiding the end of the previous plastic coil. After cutting is completed, the plastic coil can return to the bottom of the first guide roller 12, forming a normal feeding state.

[0036] In this embodiment, the heating element 25 is a heating wire extending along the material receiving base 22. The pressure block 24 is provided with a rubber pressure strip 241, which abuts against the heating wire. The heating wire's narrow effective heating width allows for narrowing the width of the seam between the two plastic coils and facilitates controlling the heating temperature and duration based on the thickness and material type of the plastic coils. The elasticity of the rubber pressure strip 241 ensures that the two plastic coils are securely pressed against the heating wire area.

[0037] Furthermore, a vertical connecting post 243 is provided above the rubber bead 241. The vertical connecting post 243 penetrates the pressure block 24 and is fitted with a tension spring (not shown) that presses the rubber bead 241 against the heating wire. The vertical connecting post 243 and the tension spring ensure that the rubber bead 241 is tightly pressed against the heating wire as the pressure block 24 is pressed downward.

[0038] In this embodiment, the receiving base 22 is provided with a flying knife slot 221; the flying knife slot 221 is arranged along the extending direction of the receiving base 22, and is located on the side of the pressing block 24 away from the loading device 30. The cutting assembly 26 includes a blade 261 and a flying knife drive assembly 262; the flying knife drive assembly 262 enables the blade 261 to move along the flying knife slot 221. The blade 261 passes through the flying knife slot 221, thereby cutting the waste plastic material from the two plastic rolls along the width of the receiving base 22.

[0039] Specifically, a flying knife guide rail 263 and a flying knife slide 264 are provided on the bottom side of the material receiving base 22. The blade 261 is detachably mounted on the flying knife slide 264. The flying knife drive assembly 262 enables the flying knife slide 264 to slide along the flying knife guide rail 263. Utilizing the space below the material receiving base 22 to arrange the slide rail and slide structure, the linear sliding of the flying knife can be maintained stable and reliable, as well as the accuracy of the linear movement.

[0040] Furthermore, the flying knife driving assembly 262 is a telescopic rod structure arranged parallel to the flying knife guide rail 263, and its movable end is connected to the flying knife slide 264. Further, by utilizing the space under the material receiving seat 22 and arranging the telescopic rod structure arranged parallel to the flying knife guide rail 263, the rapid telescopic activity control of the flying knife slide 264 can be completed.

[0041] In some embodiments, the pressing block 24 is provided with a protective groove 242; the protective groove 242 is arranged along the extension direction of the material receiving seat 22 and is located above the flying knife slot 221. When the pressing block 24 moves toward the material receiving seat 22 and presses it, the protective groove 242 covers the flying knife slot 221, and the top of the blade 261 is located in the protective groove 242. The protective groove 242 can cover the movement path of the blade 261 in the flying knife slot 221, effectively avoiding safety risks caused by the movement of the blade 261.

[0042] Furthermore, a contact switch is provided on the material receiving seat 22 , and when the pressing block 24 moves close to or in contact with the material receiving seat 22 , the flying knife driving assembly 262 can be activated to enable the blade 261 to extend and retract.

[0043] In some embodiments, a flying knife protection cover 222 is provided at both ends of the flying knife groove 221; when the material splicing and sewing device 20 is not working and the feed rack 10 is feeding normally, the blade 261 is in a stationary state. At this time, the blade 261 can be surrounded by the flying knife protection cover 222, effectively preventing the operator from touching the blade 261 and reducing safety risks.

[0044] In some embodiments, a plurality of splicing and sewing devices 20 may be provided along the width direction of the feeding frame 10. The plurality of splicing and sewing devices 20 may independently operate to splice, sew, and cut a plurality of plastic coils.

[0045] Of course, the present invention is not limited to the above-mentioned embodiments. Those skilled in the art may make equivalent modifications or substitutions without violating the spirit of the present invention. These equivalent modifications and substitutions are all included in the scope defined by the claims of this application.

Claims

1. A self-stitching and cutting structure for a bag-making machine, characterized in that: The material splicing and sewing device (20) comprises a material splicing frame (21), a material splicing seat (22), a pressing drive (23), a pressing block (24), a heating component (25) and a cutting component (26); the material splicing frame (21) and the material splicing seat (22) are arranged along the width direction of the feeding frame (10); the pressing drive (23) can move the pressing block (24) toward the material splicing seat (22) and press two plastic coils between the pressing block (24) and the material splicing seat (22); the heating component (25) can hot-melt-sew the two plastic coils; the cutting component (26) is arranged on the side of the pressing block (24) away from the feeding device (30) and is used to cut the two plastic coils.

2. The self-stitching and cutting structure for bag-making machines according to claim 1, characterized in that: The feeding frame (10) is provided with a first guide roller (12) at the feeding end; a material splicing and sewing area (13) is provided on the rear side of the first guide roller (12); the material splicing frame (21) and the material splicing seat (22) are mounted on the material splicing and sewing area (13); the height of the material splicing seat (22) is higher than the height of the first guide roller (12).

3. The self-stitching and cutting structure for bag-making machines according to claim 2, characterized in that: The feeding end of the feeding rack (10) is also provided with a second guide roller (14); the second guide roller (14) is located in front of the first guide roller (12), and the height of the second guide roller (14) is lower than that of the first guide roller (12).

4. The self-stitching and cutting structure for bag-making machines according to claim 1, characterized in that: The heating component (25) is an electric heating wire extending along the material receiving seat (22); the pressing block (24) is provided with a rubber pressure strip (241); and the rubber pressure strip (241) can abut against the heating wire.

5. The self-stitching and cutting structure for bag-making machines according to claim 4, characterized in that: A vertical connecting column (243) is provided above the rubber pressure strip (241), and the vertical connecting column (243) is passed through the pressure block (24). The vertical connecting column (243) is sleeved with a tension spring, which can press the rubber pressure strip (241) toward the heating wire.

6. The self-stitching and cutting structure for bag-making machines according to claim 1, characterized in that: The material receiving seat (22) is provided with a flying knife groove (221); the flying knife groove (221) is arranged along the extension direction of the material receiving seat (22) and is located on the side of the pressing block (24) away from the feeding device (30); the cutting assembly (26) includes a blade (261) and a flying knife driving assembly (262); the flying knife driving assembly (262) can enable the blade (261) to move along the flying knife groove (221).

7. The self-stitching and cutting structure for bag-making machines according to claim 6, characterized in that: A flying knife guide rail (263) and a flying knife slide seat (264) are provided on the bottom side of the material receiving seat (22); the blade (261) is detachably provided on the flying knife slide seat (264); and the flying knife driving assembly (262) can enable the flying knife slide seat (264) to slide along the flying knife guide rail (263).

8. The self-stitching and cutting structure for bag-making machines according to claim 7, characterized in that: The flying knife driving assembly (262) is a telescopic rod structure arranged in parallel with the flying knife guide rail (263), and its movable end is connected to the flying knife slide seat (264).

9. The self-stitching and cutting structure for bag-making machines according to claim 6, characterized in that: The pressing block (24) is provided with a protection groove (242); the protection groove (242) is arranged along the extension direction of the material receiving seat (22) and is located above the flying knife groove (221); when the pressing block (24) moves toward the material receiving seat (22) and is pressed, the protection groove (242) is covered above the flying knife groove (221), and the top end of the blade (261) is located in the protection groove (242).

10. The self-stitching and cutting structure for bag-making machines according to claim 1, characterized in that: The material joining and sewing devices (20) can be arranged in plurality along the width direction of the feeding frame (10).

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