A bottom bag folding mechanism for a nonwoven fabric three-dimensional bag making machine

Abstract

The application relates to the technical field of mechanical processing, and discloses a bottom bag folding mechanism for a non-woven fabric three-dimensional bag making machine, which comprises a main body, an inner frame fixedly connected to the inside of the main body, and a fixing rod fixedly connected to the inside of the inner frame, and further comprises an anti-deviation mechanism installed in the inner frame, a folding block fixedly connected to the outer surface of the fixing rod, and a limiting shell fixedly connected to the side wall of the folding block; the operation of the anti-deviation mechanism can reduce the misalignment of the non-woven fabric bag during folding. The change of the state of the pushing block can push the upper and lower sides of the rubber sheet to bend towards the folding block, so that the asymmetry of the non-woven fabric during folding on the folding block is reduced, and the accuracy of the non-woven fabric during bag folding is further improved.

Description

Technical Field

[0001] This invention relates to the field of machining technology, specifically to a bottom folding mechanism for a nonwoven fabric three-dimensional bag making machine. Background Technology

[0002] The bottom folding mechanism is the core component of the non-woven fabric three-dimensional bag making machine. It can automatically and accurately fold the bottom of the bag to ensure that the bag is square and upright, with uniform size and strong load-bearing capacity. It replaces manual labor and greatly improves production efficiency and finished product yield. At the same time, it lays the foundation for flexible equipment changeover and intelligent automation upgrades, and helps the industry to continue to develop towards high efficiency, energy saving, high-end customization and green mass production. The staff first pulls the non-woven fabric out of the pulling machine. After the guide wheels, folding blocks and flattening wheels are put into place, the motor is started. The non-woven fabric is automatically folded to complete the bag folding operation by relying on the guidance of the folding blocks. Because the non-woven fabric itself is flexible and extensible, it is easy to shift laterally during continuous conveying. Moreover, the triangular block only provides a single guide slope and lacks an adaptive correction structure. The tension and friction on both sides of the non-woven fabric are uneven, which makes it easy for the non-woven fabric to have uneven lengths on both sides when sliding along the triangular folding block. This will lead to waste in subsequent processing and reduce the accuracy of non-woven fabric bag forming. Summary of the Invention

[0003] The purpose of this invention is to provide a bottom folding mechanism for a nonwoven fabric three-dimensional bag making machine, so as to solve the problems mentioned in the background art.

[0004] To solve the above-mentioned technical problems, the present invention is achieved through the following technical solution: This invention relates to a bottom folding mechanism for a nonwoven fabric three-dimensional bag making machine, comprising a main body, an inner frame fixedly connected inside the main body, a fixing rod fixedly connected inside the inner frame, and further comprising: The anti-deviation mechanism is installed inside the inner frame. A folding block is fixedly connected to the outer surface of the fixing rod, and a limiting shell is fixedly connected to the side wall of the folding block. The operation of the anti-deviation mechanism can reduce the misalignment of the non-woven bag when folding. The auxiliary mechanism is installed inside the limiting shell. Several guide blocks are fixedly connected inside the limiting shell. The guide blocks are symmetrically distributed around the folding block. Elastic strips are slidably connected inside the guide blocks. When the auxiliary mechanism is in operation, it can reduce the deformation of the anti-deviation mechanism. There are two guide blocks. The guide blocks can provide stable assistance to the movement of the auxiliary mechanism. The anti-deviation mechanism will be activated when the nonwoven fabric deviates. When the anti-deviation mechanism moves, it will drive the auxiliary mechanism to operate synchronously to ensure the positional stability of the nonwoven fabric.

[0005] Furthermore, the main body includes: The guide component is located inside the main body and can guide the non-woven fabric into the folded area. The pull component is located at the top of the main body. The pull component can press the folded non-woven fabric and push it out of the folded area. The guide component can guide the external non-woven fabric into the folding area. After passing through the folding area, the non-woven fabric will be pulled out by the external device from the pulling component, thus completing the bag folding operation.

[0006] Furthermore, the anti-deviation mechanism also includes: The sliding component is located inside the limiting shell. The sliding component can reduce the displacement of the nonwoven fabric. The flattening component is located on the side wall of the sliding component. The operation of the flattening component can reduce the possibility of the sliding component being accidentally triggered on the other side during the nonwoven fabric being corrected. The sliding component is activated when the nonwoven fabric is deflected. The movement of the sliding component will drive the flattening component to move synchronously. The operation of the flattening component will limit the position of the nonwoven fabric when it is moved.

[0007] Furthermore, the auxiliary mechanisms also include: Anti-bending component, which is located on top of flattening component, can reduce deformation of sliding component; The flattening component operates to drive the anti-bending component to move synchronously. When the anti-bending component operates, it blocks the sliding component at the bottom, thereby reducing the deformation of the sliding component due to compression.

[0008] Furthermore, the guide assembly includes guide wheels rotatably connected inside the inner frame; The pull assembly includes two flattening wheels that are rotatably connected to the top of the inner frame.

[0009] Furthermore, the two flattening rollers are symmetrically distributed with the inner frame as the center; The top of the flattening roller is equipped with a steering wheel, which is rotatably connected to the top of the inner frame.

[0010] There are two pressing rollers. After the non-woven fabric is bent, it will pass through the gap between the pressing rollers. The mutual squeezing of the pressing rollers will fix the shape of the folded non-woven fabric.

[0011] Furthermore, the sliding assembly includes several baffles fixedly connected inside the limiting shell, and the baffles are symmetrically distributed around the folding block; A sliding block is provided at the bottom of the baffle plate, and the sliding block is slidably connected to the side wall of the limiting shell; The side wall of the sliding block is fixedly connected with a U-shaped spring piece; There are two blocking plates. The blocking plates are set to block the U-shaped spring sheet when the sliding block moves, so that the U-shaped spring sheet will undergo a certain deformation.

[0012] Furthermore, the sliding component includes several rubber sheets fixedly connected to the side wall of the U-shaped spring sheet, and the several rubber sheets are equidistantly distributed with respect to the U-shaped spring sheet; Several pushing blocks are fixedly connected to the sidewalls of several rubber sheets, and the pushing blocks are distributed at equal intervals with the rubber sheets.

[0013] Furthermore, the flattening assembly includes several limiting blocks fixedly connected inside the limiting shell, and the limiting blocks are distributed at equal angles to the limiting shell; A rubber plate is slidably connected between several limiting blocks, and several support plates are fixedly connected to the side walls of the rubber plates. The support plates are symmetrically distributed around the limiting shell. A contact plate is fixedly connected to one end of the support plate away from the rubber plate, and a counter-pull plate is fixedly connected to the side wall of the contact plate. The other end of the counter-pull plate slides through the side wall of the rubber plate. The rubber sheet can generate a certain friction force on the non-woven fabric, and there are two push blocks, which can cause the rubber sheet to bend.

[0014] Furthermore, the anti-bend assembly includes an elastic strip slidably connected inside the guide block, and several blocking blocks are fixedly connected to the side wall of the elastic strip; Several blocking blocks are symmetrically distributed around the elastic strip. A sliding rod is fixedly connected to the side wall of the blocking block. The end of the sliding rod away from the guide block is fixedly connected to the side wall of another blocking block. A spring is fitted onto the outer surface of the sliding rod; The system includes three limiting blocks, which provide a stable fixed position for the rubber sheet and allow it to slide on the limiting blocks. There are also two support plates, which provide a pushing force to the rubber sheet in the direction of the folding block when the contact plate moves.

[0015] The present invention has the following beneficial effects: 1. In this invention, the end of the U-shaped spring near the folding block will move away from the blocking plate under the influence of deformation. At the same time, when the rubber sheet slides upward, the pushing block will form a certain frictional force with the side wall of the limiting shell. Under the influence of the frictional force, the pushing block will change from an inclined state to a straight state. At this time, the change in the state of the pushing block will push the upper and lower sides of the rubber sheet to bend towards the folding block. Under the influence of the deformation of the U-shaped spring and the rubber sheet, the wrinkled non-woven fabric will move to the other side of the fold, thereby reducing the asymmetry of the two sides when the non-woven fabric is folded on the folding block, and further improving the accuracy of the non-woven fabric when folding bags.

[0016] 2. In this invention, the contact plate near the movable rubber sheet will not generate excessive friction with the side wall of the limiting shell. At the same time, the contact plate on the other side will generate friction with the side wall of the limiting shell under the influence of the tilt of the support plate. Under the influence of the friction generated by the contact plate, the support plate will gradually change from a tilted state to a vertical state. At this time, the end away from the movable rubber sheet will bend towards the non-woven fabric, thereby reducing the situation where the non-woven fabric pushed by the movable rubber sheet bends and causes the other side of the rubber sheet to slide upward, thereby further improving the stability of the rubber sheet when the non-woven fabric is folded.

[0017] 3. In this invention, the elastic strip is subjected to pressure from both sides, and the elastic strip will deform under the pressure. The middle part of the elastic strip will move towards the pushing block and move to the side wall of the pushing block. When the pushing block is moved and pushed by the rubber plate, the deformation of the U-shaped spring piece caused by the rubber plate will be blocked by the elastic strip. Due to the setting of the elastic strip, the deformation of the non-sliding U-shaped spring piece caused by the rubber plate can be reduced, which will lead to contact with the non-woven fabric and damage when the non-woven fabric slides on the folding block. This further improves the integrity of the non-woven fabric when folding the bag.

[0018] 4. In this invention, the movement of the contact plate will cause the reverse pull plate to move in the opposite direction to the rubber plate. At this time, the movement of the reverse pull plate will cause the rubber plate close to the non-woven fabric to move away from the non-woven fabric, thereby reducing the contact between the rubber plate and the folding block. Due to the setting of the contact plate, when the rubber plate contacts the folding block, the non-woven fabric will slide on the side wall of the folding block, and the non-woven fabric will be indented under the pressure of the contact point between the rubber plate and the folding block, which further improves the flatness of the non-woven fabric surface when folding the bag.

[0019] Of course, any product implementing this invention does not necessarily need to achieve all of the advantages described above at the same time. Attached Figure Description

[0020] To more clearly illustrate the technical solutions of the embodiments of the present invention, the accompanying drawings used in the description of the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0021] Figure 1 This is a schematic diagram of the overall structure of the present invention; Figure 2 This is a schematic diagram of the overall partial structure of the present invention; Figure 3 This is a schematic diagram of the main body of the invention; Figure 4 This is a schematic cross-sectional view of the main body of the present invention; Figure 5This is a partial schematic diagram of the sliding component of the present invention; Figure 6 This is a schematic diagram of the sliding component of the present invention; Figure 7 This is a schematic diagram of the flattening component of the present invention; Figure 8 This is a partial schematic diagram of the flattening component of the present invention; Figure 9 This is a schematic diagram of the anti-bending component of the present invention; Figure 10 For the present invention Figure 9 An enlarged diagram of A in the diagram.

[0022] The attached diagram lists the components represented by each number as follows: In the diagram: 1. Main body; 101. Inner frame; 11. Guide assembly; 111. Fixing rod; 112. Guide wheel; 12. Pulling assembly; 121. Flattening wheel; 122. Direction wheel; 201. Folding block; 2. Anti-deviation mechanism; 21. Sliding assembly; 211. Limiting shell; 212. Blocking plate; 213. Sliding block; 214. U-shaped spring; 215. Rubber sheet; 216. Pushing block; 22. Flattening assembly; 221. Limiting block; 222. Rubber sheet; 223. Support plate; 224. Contact plate; 225. Anti-pull plate; 301. Guide block; 3. Auxiliary mechanism; 31. Anti-bending assembly; 311. Elastic strip; 312. Blocking block; 313. Sliding rod; 314. Spring. Detailed Implementation

[0023] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0024] Please see Figure 1 - Figure 10 As shown, the present invention is a bottom folding bag mechanism for a nonwoven fabric three-dimensional bag making machine, including a main body 1, an inner frame 101 fixedly connected inside the main body 1, a fixing rod 111 fixedly connected inside the inner frame 101, and further including: Anti-deviation mechanism 2 is installed inside the inner frame 101. A folding block 201 is fixedly connected to the outer surface of the fixing rod 111. A limiting shell 211 is fixedly connected to the side wall of the folding block 201. The operation of anti-deviation mechanism 2 can reduce the misalignment of non-woven bags when folding. Auxiliary mechanism 3 is installed inside the limiting shell 211. Several guide blocks 301 are fixedly connected inside the limiting shell 211. The guide blocks 301 are symmetrically distributed around the folding block 201. Elastic strips 311 are slidably connected inside the guide blocks 301. When the auxiliary mechanism 3 is in operation, it can reduce the deformation of the anti-deviation mechanism 2. There are two guide blocks 301. The guide blocks 301 can provide stable assistance for the movement of the auxiliary mechanism 3. The anti-deviation mechanism 2 will be activated when the non-woven fabric deviates. When the anti-deviation mechanism 2 moves, it will drive the auxiliary mechanism 3 to operate synchronously to ensure the positional stability of the non-woven fabric.

[0025] Entity 1 includes: The guide component 11 is located inside the main body 1. The guide component 11 can guide the non-woven fabric into the folded area. Pull component 12 is located on the top of the main body 1. The pull component 12 can press the folded non-woven fabric and send it out of the folded area. The guide component 11 can guide the external non-woven fabric into the folding area. After passing through the folding area, the non-woven fabric will be pulled out by the external device from the pulling component 12, thereby completing the bag folding operation.

[0026] Anti-deviation mechanism 2 also includes: The sliding component 21 is located inside the limiting shell 211. The sliding component 21 can reduce the occurrence of non-woven fabric shift.

[0027] Flattening component 22 is disposed on the side wall of sliding component 21. The operation of flattening component 22 can reduce the situation where the sliding component 21 is accidentally triggered on the other side during the non-woven fabric being corrected. The sliding component 21 is activated when the nonwoven fabric is offset. The movement of the sliding component 21 will drive the flattening component 22 to move synchronously. The operation of the flattening component 22 will limit the position of the nonwoven fabric when it is moved.

[0028] Auxiliary mechanism 3 also includes: Anti-bending component 31 is located on top of flattening component 22. The operation of anti-bending component 31 can reduce the deformation of sliding component 21.

[0029] The operation of the flattening component 22 will drive the anti-bending component 31 to move synchronously. When the anti-bending component 31 is in operation, it will block the sliding component 21 at the bottom, thereby reducing the deformation of the sliding component 21 due to compression.

[0030] The guide assembly 11 includes a guide wheel 112 rotatably connected inside the inner frame 101; The pulling assembly 12 includes two flattening wheels 121 rotatably connected to the top of the inner frame 101. The operator pulls the nonwoven fabric out from the external pulling machine and through the bottom of the guide wheel 112, and then the operator pulls the nonwoven fabric from the side wall of the folding block 201 to the top of the folding block 201.

[0031] The two flattening rollers 121 are symmetrically distributed with the inner frame 101 as the center; The top of the flattening roller 121 is provided with a directional roller 122, which is rotatably connected to the top of the inner frame 101; There are two pressing rollers 121. After the non-woven fabric is bent, it will pass through the gap between the pressing rollers 121. The mutual squeezing of the pressing rollers 121 will fix the shape of the folded non-woven fabric. The non-woven fabric passing between the pressing rollers 121 is pulled to the subsequent external top opening machine. After the non-woven fabric is installed, the staff starts the external motor. At this time, driven by the motor, the non-woven fabric will be formed from a whole piece of fabric into a folded non-woven fabric under the influence of the folding block 201.

[0032] The sliding component 21 includes a plurality of baffles 212 fixedly connected inside the limiting shell 211, and the plurality of baffles 212 are symmetrically distributed around the folding block 201. A sliding block 213 is provided at the bottom of the baffle plate 212, and the sliding block 213 is slidably connected to the side wall of the limiting shell 211; A U-shaped spring piece 214 is fixedly connected to the side wall of the sliding block 213; There are two blocking plates 212. When the sliding block 213 moves, the blocking plates 212 block the U-shaped spring sheet 214, causing the U-shaped spring sheet 214 to deform. The non-woven fabric will form wavy folds under the obstruction of the limiting shell 211. At this time, the non-woven fabric will change from a flat surface to a three-dimensional wavy shape. At the same time, the non-woven fabric is still moving upward. The folded area of ​​the non-woven fabric will generate friction on the rubber sheet 215. At this time, the rubber sheet 215 will slide upward under the action of friction. The movement of the rubber sheet 215 will drive the U-shaped spring sheet 214 to move synchronously.

[0033] The sliding component 21 includes a plurality of rubber sheets 215 fixedly connected to the side wall of the U-shaped spring sheet 214, and the plurality of rubber sheets 215 are equidistantly distributed with respect to the U-shaped spring sheet 214; Several rubber sheets 215 are fixedly connected to several pushing blocks 216 on their sidewalls. The pushing blocks 216 are equidistant from the rubber sheets 215. The end of the U-shaped spring sheet 214 near the folding block 201 will move away from the blocking plate 212 under the influence of deformation. At the same time, when the rubber sheet 215 slides upward, the pushing block 216 will generate a certain frictional force with the sidewall of the limiting shell 211. Under the influence of the frictional force, the pushing block 216 will change from an inclined state to a straight state.

[0034] The flattening assembly 22 includes a plurality of limiting blocks 221 fixedly connected inside the limiting shell 211, and the plurality of limiting blocks 221 are distributed at equal angles to the limiting shell 211; A rubber plate 222 is slidably connected between several limiting blocks 221, and several support plates 223 are fixedly connected to the side wall of the rubber plate 222. The several support plates 223 are symmetrically distributed around the limiting shell 211. A contact plate 224 is fixedly connected to one end of the support plate 223 away from the rubber plate 222. A reverse pull plate 225 is fixedly connected to the side wall of the contact plate 224. The other end of the reverse pull plate 225 slides through the side wall of the rubber plate 222. The rubber sheet 215 can generate a certain friction force on the non-woven fabric. There are two push blocks 216. The push blocks 216 can make the rubber sheet 215 bend. The rubber sheet 215 will generate a certain pushing force on the rubber plate 222. At this time, the rubber plate 222 will slide on the limiting block 221 towards the other side of the non-woven fabric fold under the push of the rubber sheet 215. The sliding of the rubber plate 222 will drive the contact plate 224 near the side of the moving rubber sheet 215 to slide along the side wall of the limiting shell 211.

[0035] The anti-bend assembly 31 includes an elastic strip 311 that is slidably connected inside the guide block 301, and a number of blocking blocks 312 are fixedly connected to the side wall of the elastic strip 311. Several blocking blocks 312 are symmetrically distributed around the elastic strip 311. A sliding rod 313 is fixedly connected to the side wall of the blocking block 312. The end of the sliding rod 313 away from the guide block 301 is fixedly connected to the side wall of another blocking block 312. A spring 314 is fitted onto the outer surface of the sliding rod 313; Among them, there are three limiting blocks 221. The setting of the limiting blocks 221 can provide a stable fixed position for the rubber plate 222. At the same time, the rubber plate 222 can slide on the limiting blocks 221. There are two support plates 223. The setting of the support plates 223 can provide a pushing force to the rubber plate 222 towards the folding block 201 when the contact plate 224 moves. The support plates 223 will contact the rubber sheet 215 and the blocking block 312. The movement of the support plates 223 will generate a certain pushing force on the blocking block 312. At this time, the blocking block 312 will move towards the other blocking block 312. At this time, the elastic strip 311 will be subjected to pressure from both sides. The elastic strip 311 will undergo a certain deformation under the action of pressure. The middle part of the elastic strip 311 will move towards the pushing block 216 and move to the side wall of the pushing block 216.

[0036] In use, the staff first pulls the non-woven fabric out from the external pulling machine and passes it through the bottom of the guide wheel 112. Then, the staff pulls the non-woven fabric from the side wall of the folding block 201 to the top of the folding block 201, and then passes it through the flattening wheels 121 and pulls it into the subsequent external top opening machine. After the non-woven fabric is installed, the staff starts the external motor. At this time, driven by the motor, the non-woven fabric will be formed from a whole piece of fabric into a folded non-woven fabric under the influence of the folding block 201, thus meeting the folding bag requirements of the non-woven fabric.

[0037] When the non-woven fabric slides on the side wall of the folding block 201, under the triangular setting of the folding block 201, the folded non-woven fabric may have uneven lengths on both sides. When one side of the non-woven fabric is too long, it will form wavy folds under the limiting shell 211, changing from a flat surface to a three-dimensional undulating state. At the same time, the non-woven fabric is still moving upward. The folded area of ​​the non-woven fabric will generate friction on the rubber sheet 215. At this time, the rubber sheet 215 will slide upward under the action of friction. The movement of the rubber sheet 215 will drive the U-shaped spring sheet 214 to move synchronously. When the U-shaped spring sheet 214 moves upward, it will be blocked by the blocking plate 212 and undergo a certain deformation. The U-shaped spring sheet 214 approaches the folding block. Under the influence of deformation, one end of block 201 will move away from the blocking plate 212. At the same time, when the rubber sheet 215 slides upward, the pushing block 216 will generate a certain friction with the side wall of the limiting shell 211. Under the influence of friction, the pushing block 216 will change from an inclined state to a straight state. At this time, the change in the state of the pushing block 216 will push the upper and lower sides of the rubber sheet 215 to bend towards the folding block 201. Under the influence of the deformation of the U-shaped spring sheet 214 and the rubber sheet 215, the wrinkled non-woven fabric will move to the other side of the fold, thereby reducing the asymmetry of the two sides when the non-woven fabric is folded on the folding block 201, and further improving the accuracy of the non-woven fabric when folding the bag.

[0038] When the rubber sheet 215 moves away from the blocking plate 212 from the side near the limiting shell 211, the rubber sheet 215 will exert a certain pushing force on the rubber plate 222. At this time, the rubber plate 222 will slide on the limiting block 221 towards the other side of the non-woven fabric fold under the pushing force of the rubber sheet 215. The sliding of the rubber plate 222 will drive the contact plate 224 near the side of the moving rubber sheet 215 to slide along the side wall of the limiting shell 211. Due to the inclined setting of the support plate 223, the contact plate 224 near the side of the moving rubber sheet 215 will not make contact with the side wall of the limiting shell 211. Excessive friction is generated, and the contact plate 224 on the other side will generate friction with the side wall of the limiting shell 211 under the influence of the tilt of the support plate 223. Under the influence of the friction generated by the contact plate 224, the support plate 223 will gradually change from an inclined state to a vertical state. At this time, the end of the rubber sheet 215 away from the moving rubber sheet will bend towards the non-woven fabric, thereby reducing the situation where the non-woven fabric pushed by the moving rubber sheet 215 bends and causes the other side of the rubber sheet 215 to slide upward, thereby further improving the stability of the rubber sheet 215 when the non-woven fabric is folded.

[0039] When the rubber plate 222 moves toward the rubber sheet 215, the support plate 223 will contact the rubber sheet 215 and the blocking block 312. The movement of the support plate 223 will generate a certain pushing force on the blocking block 312. At this time, the blocking block 312 will move toward another blocking block 312. At this time, the elastic strip 311 will be subjected to pressure from both sides. The elastic strip 311 will deform under the pressure. The middle part of the elastic strip 311 will move toward the pushing block 216 and move to the side wall of the pushing block 216. When the pushing block 216 is moved and pushed by the rubber plate 222, the deformation of the U-shaped elastic piece 214 caused by the pushing of the rubber plate 222 will be blocked by the elastic strip 311. Since the setting of the elastic strip 311 can reduce the deformation of the non-sliding U-shaped elastic piece 214 due to the pressure of the rubber plate 222, and thus reduce the damage to the non-woven fabric when sliding on the folding block 201, the integrity of the non-woven fabric is further improved when folding the bag.

[0040] When the rubber plate 222 is pushed by the U-shaped spring piece 214 on one side, the contact plate 224 on the other side of the rubber plate 222 moves on the limiting shell 211 due to friction. The movement of the contact plate 224 will drive the reverse pull plate 225 to move in the opposite direction of the rubber plate 222. At this time, the movement of the reverse pull plate 225 will drive the rubber plate 222 close to the non-woven fabric away from the non-woven fabric, thereby reducing the contact between the rubber plate 222 and the folding block 201. Since the contact plate 224 is set, it reduces the situation where the non-woven fabric slides on the side wall of the folding block 201 when the rubber plate 222 contacts the folding block 201, and the non-woven fabric will have indentations under the pressure of the contact point between the rubber plate 222 and the folding block 201, further improving the flatness of the non-woven fabric surface when folding the bag.

[0041] The preferred embodiments of the present invention disclosed above are merely illustrative of the invention. These preferred embodiments do not exhaustively describe all details, nor do they limit the invention to the specific implementations described. Clearly, many modifications and variations can be made based on the content of this specification. This specification selects and specifically describes these embodiments to better explain the principles and practical applications of the invention, thereby enabling those skilled in the art to better understand and utilize the invention. The invention is limited only by the claims and their full scope and equivalents.

Claims

1. A bottom folding bag mechanism for a nonwoven fabric three-dimensional bag making machine, comprising a main body (1), wherein an inner frame (101) is fixedly connected inside the main body (1), and a fixing rod (111) is fixedly connected inside the inner frame (101), characterized in that, Also includes: Anti-deviation mechanism (2), the anti-deviation mechanism (2) is installed inside the inner frame (101), the outer surface of the fixing rod (111) is fixedly connected to the folding block (201), the side wall of the folding block (201) is fixedly connected to the limiting shell (211), the operation of the anti-deviation mechanism (2) can reduce the misalignment of the non-woven bag when folding; The auxiliary mechanism (3) is installed inside the limiting shell (211). Several guide blocks (301) are fixedly connected inside the limiting shell (211). The guide blocks (301) are symmetrically distributed around the folding block (201). Elastic strips (311) are slidably connected inside the guide blocks (301). When the auxiliary mechanism (3) is in operation, it can reduce the deformation of the anti-deviation mechanism (2).

2. The bottom folding mechanism for a nonwoven fabric three-dimensional bag making machine according to claim 1, characterized in that: The main body (1) includes: The guide component (11) is disposed inside the main body (1). The guide component (11) can guide the non-woven fabric into the folded area. Pull component (12) is set on the top of the main body (1). The pull component (12) can press the folded non-woven fabric and send it out of the folded area.

3. The bottom folding mechanism for a nonwoven fabric three-dimensional bag making machine according to claim 2, characterized in that: The anti-deviation mechanism (2) also includes: The sliding component (21) is disposed inside the limiting shell (211). The sliding component (21) can reduce the displacement of the nonwoven fabric. Flattening component (22) is disposed on the side wall of sliding component (21). The operation of flattening component (22) can reduce the possibility of false triggering of sliding component (21) on the other side during the nonwoven fabric correction process.

4. The bottom folding mechanism for a nonwoven fabric three-dimensional bag making machine according to claim 3, characterized in that: The auxiliary mechanism (3) also includes: Anti-bending component (31) is disposed on top of flattening component (22). The operation of anti-bending component (31) can reduce the deformation of sliding component (21).

5. The bottom folding mechanism for a nonwoven fabric three-dimensional bag making machine according to claim 4, characterized in that: The guide assembly (11) includes a guide wheel (112) rotatably connected inside the inner frame (101). The pulling assembly (12) includes two flattening wheels (121) rotatably connected to the top of the inner frame (101).

6. The bottom folding mechanism for a nonwoven fabric three-dimensional bag making machine according to claim 5, characterized in that: The two flattening rollers (121) are symmetrically distributed with the inner frame (101) as the center; The top of the flattening wheel (121) is provided with a directional wheel (122), and the directional wheel (122) is rotatably connected to the top of the inner frame (101).

7. The bottom folding mechanism for a nonwoven fabric three-dimensional bag making machine according to claim 4, characterized in that: The sliding assembly (21) includes a plurality of baffles (212) fixedly connected inside the limiting shell (211), and the plurality of baffles (212) are symmetrically distributed around the folding block (201); The bottom of the baffle plate (212) is provided with a sliding block (213), which is slidably connected to the side wall of the limiting shell (211); The side wall of the sliding block (213) is fixedly connected with a U-shaped spring piece (214).

8. The bottom folding mechanism for a nonwoven fabric three-dimensional bag making machine according to claim 7, characterized in that: The sliding assembly (21) includes a plurality of rubber sheets (215) fixedly connected to the side wall of the U-shaped spring sheet (214), and the plurality of rubber sheets (215) are equidistantly distributed with respect to the U-shaped spring sheet (214); A plurality of pushing blocks (216) are fixedly connected to the sidewalls of the plurality of rubber sheets (215), and the plurality of pushing blocks (216) are distributed at equal intervals with respect to the rubber sheets (215).

9. The bottom folding mechanism for a nonwoven fabric three-dimensional bag making machine according to claim 7, characterized in that: The flattening assembly (22) includes a plurality of limiting blocks (221) fixedly connected inside the limiting shell (211), and the plurality of limiting blocks (221) are distributed at equal angles to the limiting shell (211); A rubber plate (222) is slidably connected between several of the limiting blocks (221), and several support plates (223) are fixedly connected to the side wall of the rubber plate (222). The several support plates (223) are symmetrically distributed around the limiting shell (211). The support plate (223) is fixedly connected to a contact plate (224) at one end away from the rubber plate (222), and a counter-pull plate (225) is fixedly connected to the side wall of the contact plate (224). The other end of the counter-pull plate (225) slides through to the side wall of the rubber plate (222).

10. The bottom folding mechanism for a nonwoven three-dimensional bag making machine according to claim 7, characterized in that: The anti-bend assembly (31) includes an elastic strip (311) slidably connected inside the guide block (301), and a plurality of blocking blocks (312) are fixedly connected to the side wall of the elastic strip (311). Several blocking blocks (312) are symmetrically distributed around the elastic strip (311). A sliding rod (313) is fixedly connected to the side wall of the blocking block (312). The end of the sliding rod (313) away from the guide block (301) is fixedly connected to the side wall of another blocking block (312). A spring (314) is fitted on the outer surface of the sliding rod (313).

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