Bag making machine with material receiving self-sewing and cutting structure

Abstract

The invention discloses a bag making machine with a material receiving and self-sewing cutting structure. A material receiving and sewing device comprises a material receiving frame, a material receiving seat, a pressing driving part, 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 into 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 invention relates to the technical field of bag making equipment, in particular to a bag making machine with a material splicing and self-sewing and cutting structure. Background Art

[0002] The bag making machine of 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 automatically operated 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 material head. In the continuous automated production process, when replacing the raw material roll, the operator needs to stop the machine first, then overlap the end of the previous raw material roll with the head of the next raw material roll, cut, and then combine them by hot pressing. After the two raw material rolls are connected, continue to feed and adjust the position of the plastic rolls in each device before production. Due to the large width of the bag making machine, it is difficult for operators to perform operations such as overlapping and cutting, and the flatness 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 improvements are needed. Summary of the invention

[0004] The present invention aims to solve at least one of the technical problems existing in the prior art. To this end, the present invention provides a bag making machine with a material splicing and self-stitching and cutting structure.

[0005] The technical solution adopted by an embodiment of the present invention to solve the technical problem is: a bag making machine with a material splicing and self-stitching and cutting structure, the material splicing and sewing device comprises a material splicing frame, a material splicing seat, a pressing drive, a pressing 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 pressing block toward the material splicing seat and press two plastic coils between the pressing block and the material splicing seat; the heating component can hot-melt and sew the two plastic coils;

[0006] The material receiving seat is provided with a flying knife groove; flying knife protection covers are provided at both ends of the flying knife groove; and the cutting component is used for cutting two plastic coils.

[0007] Optionally, the feeding rack is provided with a first guide roller at the feeding end; a material splicing and sewing area is provided at 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.

[0008] 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.

[0009] 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 against the heating wire.

[0010] Optionally, a vertical connecting column is arranged above the rubber pressure strip, the vertical connecting column is passed through the pressure block, and a tension spring is sleeved on the vertical connecting column to press the rubber pressure strip toward the heating wire.

[0011] Optionally, the cutting assembly includes a blade and a flying knife driving assembly; a flying knife guide rail and a flying knife slide are arranged on the bottom side of the material receiving seat, and the blade is detachably arranged on the flying knife slide; the flying knife driving assembly enables 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 a movable end of the telescopic rod structure is connected to the flying knife slide seat.

[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 arranged 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] Optionally, the feeding rack is provided with a plurality of feeding rollers which are staggered.

[0016] The beneficial effects of the present invention are as follows: a material splicing and sewing device is arranged at the feeding end of the feeding rack, and 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 plastic coils are passed through between the material splicing seat and the pressing block, and are pressed by the pressing block, and the two plastic coils are hot-melt-seamed by the heating component. At the same time, the two plastic coils are cut by the cutting component on the side of the pressing block away from the feeding device, and the cut plastic coil waste can be directly taken out from this side. After the pressing of the pressing block is released, the hot-melt-sealed parts of the two plastic coils are detached from the side close to the feeding device and returned to the feeding roller for feeding and subsequent operation processes. The present invention can quickly complete the overlapping, hot-melt sewing and cutting of the previous raw material roll and the subsequent raw material roll directly on the feeding rack, and return the sewn plastic coil to the feeding roller for feeding, so the efficiency of material changing and cutting is significantly improved, and the production efficiency is effectively improved; moreover, when the material splicing and sewing device is not working and the feeding rack is feeding normally, the blade is in a stationary state, and at this time the blade can be surrounded by a flying knife protection cover, which effectively prevents the operator from touching the blade and reduces the safety risk.

[0017] In order to make the above-mentioned objects, features and advantages of the present invention more obvious and understandable, preferred embodiments are given below and described in detail with reference to the accompanying drawings. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] The above and / or additional aspects and advantages of the present invention will become apparent and easily understood from the description of the embodiments in conjunction with the following drawings, in which:

[0019] Figure 1 It is a structural schematic diagram of the material-joining self-sewing and cutting structure of the present invention;

[0020] Figure 2 It is a schematic diagram of the state of two plastic coils being cut according to the present invention;

[0021] Figure 3 It is a structural schematic diagram of the material joining and sewing device of the present invention;

[0022] Figure 4 for Figure 3 Another structural schematic diagram of the center seam stitching device;

[0023] Figure 5 for Figure 3 A cross-sectional view of a center seam sewing device.

[0024] Description of main component symbols:

[0025] 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 receiving rack; 22. Material receiving seat; 221. Flying knife groove; 222. Flying knife protection cover; 23. Pressing drive member; 24. Pressing block; 241. Rubber pressure strip; 242. Protection groove; 243. Vertical connecting column; 25. Heating component; 26. Cutting component; 261. Blade; 262. Flying knife driving component; 263. Flying knife guide rail; 264. Flying knife slide; 30. Loading device. DETAILED DESCRIPTION

[0026] 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 the overall technical solution of the present invention, but it cannot be understood as a limitation on the scope of protection of the present invention.

[0027] In the description of the present invention, the meaning of "above", "below", "exceed", etc. is not inclusive of the number itself, and the meaning of "above", "below", "within", etc. is inclusive of the number itself. If there is a description of "first" or "second", it is only used to distinguish the technical features, and cannot be understood as indicating or implying the relative importance or implicitly indicating the number of the indicated technical features or implicitly indicating the order of the indicated technical features.

[0028] In the description of the present invention, it should be understood that descriptions involving orientations, such as up, down, front, back, left, right, etc., and orientations or positional relationships indicated are based on the orientations or positional relationships shown in the accompanying drawings, and 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, and therefore should not be understood as a limitation on the present invention.

[0029] In the present invention, unless otherwise clearly defined, the words "set", "install", "connect" and the like should be understood in a broad sense, for example, they can be directly connected or indirectly connected through an intermediate medium; they can be fixedly connected or detachably connected or integrally formed; they can be mechanically connected; they can be the internal connection of two elements or the interaction relationship between two elements. Those skilled in the art can reasonably determine the specific meanings of the above words in the present invention in combination with the specific content of the technical solution.

[0030] Example

[0031] Reference Figures 1 to 5 , a bag making machine with a material splicing and self-stitching and cutting structure, comprising: a feeding frame 10 and a material splicing and sewing device 20 arranged on the feeding frame 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 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 the two plastic coils between the pressing block 24 and the material splicing seat 22; the heating component 25 can heat-melt and sew the two plastic coils;

[0033] 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; flying knife protection covers 222 are provided at both ends of the flying knife groove 221; the flying knife driving assembly 262 can make the blade 261 move along the flying knife groove 221, and is used to cut two plastic coils.

[0034] In the present invention, a material splicing and sewing device 20 is provided at the feeding end of the feeding frame 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 the two plastic rolls are passed through between the splicing seat 22 and the pressing block 24, and are pressed by the pressing block 24. The two plastic rolls are hot-melt-sealed by the heating component 25. At the same time, the two plastic rolls are cut by the cutting component 26 on the side of the pressing block 24 away from the feeding device 30. The cut plastic roll waste can be directly taken out from this side. After the pressing of the pressing block 24 is released, the hot-melt-sealed part of the two plastic rolls is separated from the side close to the feeding device 30 and returned to the feeding roller 11 for feeding and subsequent operation. The present invention can quickly complete the overlapping, hot-melt stitching and cutting of the previous raw material roll and the subsequent raw material roll directly on the feeding rack 10, and return the stitched plastic coil to the feeding roller 11 for feeding, so the efficiency of material changing and cutting is significantly improved, and the production efficiency is effectively improved; moreover, when the material splicing and stitching device 20 is not working and the feeding 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, which effectively prevents the operator from touching the blade 261 and reduces the safety risk.

[0035] See also Figure 2 In this embodiment, the feeding frame 10 is provided with a first guide roll 12 at the feeding end; a material splicing and sewing area 13 is provided at the rear side of the first guide roll 12; a material splicing frame 21 and a material splicing seat 22 are arranged at the material splicing and sewing area 13; the height of the material splicing seat 22 is higher than the height of the first guide roll 12. The first guide roll 12 is arranged in front of the material splicing and sewing area 13, and its height is lower than the material splicing seat 22. After the plastic coil at the end of the previous raw material roll and the plastic coil at the head end of the next raw material roll are overlapped, they can go around the bottom of the first guide roll 12 upward and pass through the top of the material splicing seat 22, playing a guiding role.

[0036] Furthermore, the feeding end of the feeding frame 10 is also provided with a second guide roll 14; the second guide roll 14 is located at the front side of the first guide roll 12, and the height of the second guide roll 14 is lower than that of the first guide roll 12. The second guide roll 14 is located below the front side of the first guide roll 12, and the plastic coil at the head end of the next raw material roll can be wound below the second guide roll 14 and then above the first guide roll 12, so that the plastic coil of the next raw material roll can only be attached to the first guide roll 12, so as to be firmly attached and guided with the end of the previous plastic coil. After the cutting is completed, the plastic coil can be returned to the lower side of the first guide roll 12 to form a normal feeding state.

[0037] In this embodiment, 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 strip 241; the rubber strip 241 can be set against the heating wire. The effective heating width of the heating wire is narrow, which can narrow the width of the seam band of the two plastic coils, and is convenient for controlling the heating temperature and heating time according to the thickness and material type of the plastic coils; the rubber strip 241 is elastic, which can make the two plastic coils fit tightly to the area where the heating wire is located.

[0038] Furthermore, a vertical connection column 243 is provided above the rubber pressure strip 241, and the vertical connection column 243 is penetrated by the pressure block 24. The vertical connection column 243 is sleeved with a tension spring (not shown in the figure), which can press the rubber pressure strip 241 toward the heating wire. By using the vertical connection column 243 and the tension spring, the rubber pressure strip 241 can be tightly attached to the heating wire during the downward pressing of the pressure block 24.

[0039] In this embodiment, the material receiving seat 22 is provided with a flying knife groove 221; the flying knife groove 221 is arranged along the extending 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 make the blade 261 move along the flying knife groove 221. The blade 261 passes through the flying knife groove 221, and can cut off the waste of two plastic coils along the extending direction of the width of the material receiving seat 22.

[0040] Specifically, a flying knife guide rail 263 and a flying knife slide 264 are provided on the bottom side of the material receiving seat 22, and the blade 261 is detachably provided on the flying knife slide 264; the flying knife driving assembly 262 can make the flying knife slide 264 slide along the flying knife guide rail 263. By arranging the slide rail and the slide structure in the space below the material receiving seat 22, the stability and reliability of the linear sliding of the flying knife and the accuracy of the linear movement can be maintained.

[0041] Further, 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 264. Further, by utilizing the lower space of the material receiving seat 22, the telescopic rod structure arranged in parallel with the flying knife guide rail 263 is arranged to complete the rapid telescopic activity control of the flying knife slide 264.

[0042] In some embodiments, 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 covers the flying knife groove 221, and the top of the blade 261 is located in the protection groove 242. The protection groove 242 can cover the moving track of the blade 261 in the flying knife groove 221, effectively avoiding the safety risks generated during the movement of the blade 261.

[0043] 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 started to enable the blade 261 to extend and retract.

[0044] 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, which effectively prevents the operator from touching the blade 261 and reduces safety risks.

[0045] 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 and work for splicing, sewing and cutting of a plurality of plastic coils.

[0046] In this embodiment, in order to facilitate the guidance of the plastic coil, the feeding rack 10 is provided with a plurality of feeding rollers 11 which are staggered.

[0047] Of course, the present invention is not limited to the above-mentioned embodiments, and 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 bag making machine with a material-joining and self-sewing and cutting structure, characterized in that: The material splicing and sewing device (20) comprises a material splicing frame (21), a material splicing seat (22), a pressing drive member (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 member (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 heat-melt and sew the two plastic coils; The material receiving seat (22) is provided with a flying knife groove (221); flying knife protection covers (222) are provided at both ends of the flying knife groove (221); and the cutting component (26) is used for cutting two plastic coils.

2. The bag making machine with a material-joining and self-sewing and cutting structure 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 at 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 bag making machine with a material-joining and self-sewing and cutting structure 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 bag making machine with a material-joining and self-sewing and cutting structure 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 bag making machine with a material-joining and self-sewing and cutting structure according to claim 4, characterized in that: A vertical connection column (243) is arranged above the rubber pressure strip (241), and the vertical connection column (243) is penetrated by the pressure block (24). The vertical connection column (243) is sleeved with a tension spring, which can press the rubber pressure strip (241) toward the heating wire.

6. The bag making machine with a material-joining and self-sewing and cutting structure according to claim 1, characterized in that: The cutting assembly (26) comprises a blade (261) and a flying knife driving assembly (262); a flying knife guide rail (263) and a flying knife slide seat (264) are arranged on the bottom side of the material receiving seat (22); the blade (261) is detachably arranged on the flying knife slide seat (264); the flying knife driving assembly (262) can enable the flying knife slide seat (264) to slide along the flying knife guide rail (263).

7. The bag making machine with a material-joining and self-sewing and cutting structure according to claim 6, 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 sliding seat (264).

8. The bag making machine with a material-joining and self-sewing and cutting structure 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).

9. The bag making machine with a material splicing and self-sewing and cutting structure according to claim 1, characterized in that: The material joining and sewing device (20) may be arranged in plurality along the width direction of the feeding frame (10).

10. The bag making machine with a material splicing and self-sewing and cutting structure according to claim 1, characterized in that: The feeding frame (10) is provided with a plurality of feeding rollers (11) which are arranged in a staggered manner.

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