Novel bottleneck inner bag forming machine

Abstract

The invention relates to the technical field of container bag inner bag forming machines, and discloses a novel bottleneck inner bag forming machine which comprises an unwinding frame, a film traction frame, a direct ironing frame, a first bottleneck frame, a second bottleneck frame, an edge suction frame and an edge cutting mechanism. By adopting the ultrasonic deviation correction photoelectric control system, in the continuous forward pulling process of the thin film, the center position of the thin film is automatically clamped and adjusted through the edge suction assembly, the position is kept in the middle all the time, the production precision and efficiency are improved, and the problem that in the feeding process, the sizes of the two sides are not consistent when an inner bag is ironed due to deviation of the thin film is solved. The mold distance and the length of the mold wrapped by the special heat insulation material are adjusted through the hand wheel, and inner bags of different sizes can be manufactured without replacing the mold. The edge cutting mechanism comprises a servo drive, a brushless motor, a vibration cutter and the like, different cutting patterns are set according to product requirements, automatic cutting of burrs of the inner bag of the bottleneck is achieved, the product quality is guaranteed through high-precision cutting, and the labor cost is reduced.

Description

Technical Field

[0001] The invention relates to the technical field of container bag inner bag forming machines, and specifically to a new bottleneck inner bag forming machine. Background Art

[0002] Liner bags are mainly used to protect items from contamination and damage, while providing convenient loading and unloading and storage conditions. Liner bags are usually made of high-strength PE / PP film, have good airtightness and waterproofness, can effectively block external substances, and protect internal items from contamination and damage. PE, or polyethylene, is a thermoplastic resin made by polymerization of ethylene monomers. Polyethylene has a wide range of uses, mainly used to make films, packaging materials, containers, pipes, monofilaments, wires and cables, daily necessities, etc., and can be used as high-frequency insulation materials for televisions, radars, etc.

[0003] In the existing production process of PE liner bags, the product size is mainly guaranteed by manual adjustment. The original manual positioning is time-consuming and easy to deviate from the center position. In the production of large quantities of products, it is easy to lose concentration during long-term work, and the quality of the finished product is difficult to control, resulting in a waste of raw materials, which will correspondingly increase production costs, lead to waste products, and low production efficiency. Summary of the invention

[0004] In order to solve the problem that the existing new bottleneck inner bag forming machine is prone to inconsistent dimensions on both sides of the liner bag during hot pressing due to film deviation during the loading process, the present invention provides a new bottleneck inner bag forming machine to solve the above problem.

[0005] To achieve the above object, the present invention provides the following technical solutions:

[0006] A novel bottleneck inner bag forming machine comprises an unwinding frame, a film traction frame is arranged on the side of the unwinding frame, and a direct ironing frame is arranged on the side of the film traction frame away from the unwinding frame, a bottleneck frame 1 is arranged on the side of the direct ironing frame away from the film traction frame, and a bottleneck frame 2 is arranged on the side of the bottleneck frame 1 away from the direct ironing frame, a side of the bottleneck frame 2 away from the bottleneck frame 1 is arranged on the side of the bottleneck frame 1, and an ultrasonic deviation correction photoelectric component is arranged in the edge suction frame.

[0007] Furthermore, the bottleneck rack includes an upper support frame and a fixed frame, a fixed frame is arranged on the inner side of the top surface of the upper support frame, and a plurality of mold hanging cylinders are equidistantly arranged inside the upper support frame on both sides of the top surface of the fixed frame, and the output end of each of the mold hanging cylinders is fixed on the top surface of the fixed frame.

[0008] Furthermore, the bottleneck frame 1 also includes a fixed nut block and a mold mounting plate, the bottom surface of the middle of the fixed frame is symmetrically provided with adjusting screws, the two adjusting screws are connected to the fixed nut block through bearings, and the fixed nut blocks are fixed to the bottom surface of the fixed frame, the two adjusting screws are threaded with movable sliders, the bottom surface of the hanging mold cylinder is symmetrically provided with a mold mounting plate, the bottom surfaces of the two movable sliders are respectively fixed to the top surface of the mold mounting plate, another movable slider is fixed to the top surface of the mold mounting plate on both sides of the two adjusting screws, the other movable slider is slidably sleeved on the limiting slide rod, and the two ends of the limiting slide rod are fixed to another fixed nut block, and the top surface of the other fixed nut block is fixed to the bottom surface of the fixed frame.

[0009] Furthermore, a hand wheel is fixed to one end of the two adjusting screw rods extending to the outside of the fixed frame, and threads cooperating with the adjusting screw rods are arranged inside the two movable sliding blocks in the middle.

[0010] Furthermore, the straight ironing rack and the second bottleneck rack are both provided with another set of fixed nut blocks, a mold mounting plate, an adjusting screw rod, a movable slider, a limiting slider and a hand wheel.

[0011] Furthermore, the edge suction frame includes a lower support frame, a connecting plate and a support shaft. The connecting plates are symmetrically fixed to the outer side of the top surface of the lower support frame. The support shaft is slidably connected between the two connecting plates, and a photoelectric sensor is installed on the support shaft.

[0012] Furthermore, the edge suction frame also includes a fixed square tube, a slide plate and a polyurethane rubber roller. A fixed square tube is fixed on the lower support frame below the support shaft, and a square slide rail is symmetrically arranged on the top surface of the fixed square tube. Slide plates are slidably arranged on the two square slide rails, and lifting slide rails are arranged on the opposite sides of the upper parts of the two slide plates. Polyurethane rubber rollers are slidably arranged on the two lifting slide rails, and another polyurethane rubber roller is arranged on the slide plate below the two lifting slide rails. A lifting cylinder is arranged at the lower part of the slide plate, and the output end of the lifting cylinder is connected to the bottom of the polyurethane rubber roller for clamping the film and correcting the deviation.

[0013] Furthermore, movable grooves are provided on the upper parts of the two connecting plates, threaded rods are fixed at both ends of the support shaft, and the threaded rods are slidably inserted into the movable grooves, and nuts are threadedly sleeved on the ends of the two threaded rods extending to the outside of the movable grooves.

[0014] Furthermore, the two photoelectric sensors are both connected to the output ends of the external driving cylinder, the inner edge of the photoelectric sensor is aligned with the outer edge of the polyurethane rubber roller, the two upper polyurethane rubber rollers are slidably connected to the lifting slide rail through a slider, the two lifting cylinder output ends are fixed at the bottom of the slider, and the other two polyurethane rubber rollers are installed on the side walls of the slide plate through brackets, and both ends of the top surface of the lower support frame on the side of the fixed square tube are symmetrically rotatably connected to limit rollers, the length of each limit roller is less than half of the internal width of the lower support frame, and the limit roller is rotatably connected to a guide roller inside the lower support frame away from the support shaft side through a bearing seat.

[0015] Furthermore, the trimming mechanism includes a trimming frame, a guide rail, a drive motor vibrating knife body and a vibrating knife, the guide rail is fixedly installed on the upper part of the trimming frame, the drive motor is fixedly installed on the top of the guide rail, the vibrating knife body is fixedly installed on the telescopic end of the drive motor, and the vibrating knife is installed on the lower end of the vibrating knife body.

[0016] Compared with the prior art, the present invention has the following beneficial effects:

[0017] 1. In the present invention, the PE inner film is automatically controlled in the center position by adopting an ultrasonic deflection correction photoelectric control system. When the material is continuously pulled forward, the center position is determined by the ultrasonic deflection correction photoelectric component, and the material position is controlled by the polyurethane rubber roller clamping and edge suction component. If there is a slight deviation, the edge suction component will automatically clamp and adjust the material to ensure that the material is in the center position and moved to the next heat sealing station to ensure the accuracy of the heat sealing size, thereby improving the production accuracy and production efficiency, and solving the problem that the existing new bottleneck inner bag forming machine is prone to inconsistent sizes on both sides of the inner liner bag during hot pressing due to film deviation during the loading process.

[0018] 2. In the present invention, the length of the mold is changed by wrapping the inner bag size adjustment device and the special heat-insulating material, which solves the problem of disassembling and replacing molds of different sizes due to the different sizes of inner bags produced. Only the screw rod needs to be manually adjusted to adjust the position of the mold mounting plate, thereby adjusting the width of the inner bag. The special heat-insulating material is wrapped on the lower pressure surface of the mold, and the length can be adjusted as required, thereby adjusting the height of the inner bag, saving mold costs, greatly improving production efficiency, and reducing waste caused by excessive heat sealing length during the production process.

[0019] 3. In the present invention, the trimming mechanism includes a trimming frame, a guide rail, a driving motor vibrating knife body and a vibrating knife. The guide rail is fixedly installed on the upper part of the trimming frame, the driving motor is fixedly installed on the top of the guide rail, the vibrating knife body is fixedly installed on the telescopic end of the driving motor, and the vibrating knife is installed on the lower end of the vibrating knife body to realize automated operation, reduce the time and steps of manual operation, and thus significantly improve production efficiency; due to the high degree of automation, the automatic trimming equipment can reduce dependence on operating workers and reduce labor costs; the automatic trimming function adopts a brushless motor to drive the cutter to vibrate up and down at a high frequency, thereby achieving high-precision cutting and ensuring product quality; the automatic trimming function can set cutting patterns according to different product requirements, and has high flexibility. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] In order to more clearly illustrate the embodiments of the present application or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present application. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative labor.

[0021] Figure 1 It is a left side schematic diagram of the structure of the edge suction device according to an embodiment of the present application;

[0022] Figure 2 yes Figure 1 A right side schematic diagram of the structure of the edge suction device in the illustrated embodiment;

[0023] Figure 3 yes Figure 1 A right side schematic diagram of the edge suction frame structure in the illustrated embodiment;

[0024] Figure 4 yes Figure 1 A left schematic diagram of the edge suction frame structure in the illustrated embodiment;

[0025] Figure 5 yes Figure 1 A schematic cross-sectional top view of the structure after opening in the illustrated embodiment;

[0026] Figure 6 yes Figure 1 A schematic front view of a local structure in the illustrated embodiment. Figure 7 Schematic diagram of the structure of the trimming mechanism in the illustrated embodiment.

[0027] The meanings of the reference numerals in the figure are as follows: 1. unwinding rack; 2. film traction rack; 3. straight ironing rack; 4. bottleneck rack one; 41. upper support rack; 42. fixed frame; 43. hanging mold cylinder; 44. fixed nut block; 45. mold mounting plate; 46. adjusting screw rod; 47. moving slider; 48. limiting slide rod; 49. hand wheel; 5. bottleneck rack two; 6. edge suction rack; 61. lower support rack; 62. connecting plate; 63. supporting shaft; 64. photoelectric sensor; 65. fixed square tube; 66. slide plate; 67. square slide rail; 68. lifting cylinder; 69. lifting slide rail; 610. polyurethane rubber roller; 611. guide roller; 612. limiting roller; 7. edge trimming mechanism; 71. edge trimming rack; 72. guide rail; 73. driving motor; 74. vibrating knife body; 75. vibrating knife. DETAILED DESCRIPTION

[0028] In order to make the purpose, features, and advantages of the present application more obvious and easy to understand, the technical solutions in the embodiments of the present application will be clearly and completely described below in conjunction with the drawings in the embodiments of the present application. Obviously, the embodiments described below are only part of the embodiments of the present application, not all of the embodiments. Based on the embodiments in the present application, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of this application.

[0029] Reference Figure 1 and Figure 2 A new bottleneck inner bag forming machine comprises an unwinding frame 1, a film traction frame 2 is arranged on the side of the unwinding frame 1, and a direct ironing frame 3 is arranged on the side of the film traction frame 2 away from the unwinding frame 1, a bottleneck frame 1 4 is arranged on the side of the direct ironing frame 3 away from the film traction frame 2, and a bottleneck frame 2 5 is arranged on the side of the bottleneck frame 1 4 away from the direct ironing frame 3, and an edge suction frame 6 is arranged on the side of the bottleneck frame 2 5 away from the bottleneck frame 1 4, an ultrasonic deviation correction photoelectric component is arranged in the edge suction frame 6, and another set of fixed nut blocks 44, a mold mounting plate 45, an adjusting screw rod 46, a moving slider 47, a limiting slider 48 and a hand wheel 49 are arranged in the direct ironing frame 3 and the bottleneck frame 2 5.

[0030] Specifically, the plastic film is pulled forward, and after being centered by the ultrasonic deflection correction photoelectric component, the polyurethane rubber roller 610 clamps the edge suction component to control the material position. If there is a slight deviation, the edge suction component will automatically clamp and adjust it to ensure that the material is centered.

[0031] As an optimization solution, Figure 5 and Figure 6As shown, the bottleneck frame 4 includes an upper support frame 41 and a fixed frame 42. The fixed frame 42 is arranged on the inner side of the top surface of the upper support frame 41. A plurality of mold hanging cylinders 43 are arranged equidistantly inside the upper support frame 41 on both sides of the top surface of the fixed frame 42. The output end of each mold hanging cylinder 43 is fixed to the top surface of the fixed frame 42. The bottleneck frame 4 also includes a fixed nut block 44 and a mold mounting plate 45. Adjustment screws 46 are symmetrically arranged on the bottom surface of the middle part of the fixed frame 42. Hand wheels 49 are fixed to one end of the two adjustment screws 46 extending to the outside of the fixed frame 42. Threads that cooperate with the adjustment screws 46 are arranged inside the two movable sliders 47 in the middle. The two adjustment screws 46 are connected to the fixed nut block 44 through a bearing, and the fixed nut block 44 is fixed to the bottom surface of the fixed frame 42, the two adjusting screw rods 46 are threaded with a movable slider 47, the bottom surface of the hanging mold cylinder 43 is symmetrically provided with a mold mounting plate 45, the bottom surfaces of the two movable sliders 47 are respectively fixed to the top surface of the mold mounting plate 45, and another movable slider 47 is fixed to the top surface of the mold mounting plate 45 on both sides of the two adjusting screw rods 46, the other movable slider 47 is slidably sleeved on the limiting slide rod 48, and both ends of the limiting slide rod 48 are fixed to another fixed nut block 44, and the top surface of the other fixed nut block 44 is fixed to the bottom surface of the fixed frame 42.

[0032] Specifically, when the positions of the two mold mounting plates 45 need to be adjusted, the hand wheel 49 is rotated to drive the adjusting screw rod 46 to rotate. Under the action of the thread, the movable slider 47 can be driven to move. The movement of the movable slider 47 drives the mold mounting plate 45 to move. When the mold mounting plate 45 moves, it drives another movable slider 47 to slide on the limiting slide bar 48, so that the position of the mold mounting plate 45 can be adjusted to adapt to liner bags of different sizes.

[0033] Specifically, by changing the length of the mold by wrapping the inner bag size adjustment device and the special thermal insulation material, the problem of disassembling and replacing molds of different sizes due to the different sizes of inner bags produced is solved. Only the screw rod needs to be manually adjusted to adjust the position of the mold mounting plate, thereby adjusting the width of the inner bag. The special thermal insulation material is wrapped on the lower pressure surface of the mold, and the length can be adjusted as required, thereby adjusting the height of the inner bag, saving mold costs, greatly improving production efficiency, and reducing waste caused by excessive heat sealing length during the production process.

[0034] As a further optimization solution, Figure 3 and Figure 4As shown, the edge suction frame 6 includes a lower support frame 61, a connecting plate 62 and a support shaft 63. The connecting plates 62 are symmetrically fixed to the outer side of the top surface of the lower support frame 61. The upper parts of the two connecting plates 62 are provided with movable grooves. Threaded rods are fixed at both ends of the support shaft 63, and the threaded rods are slidably inserted into the movable grooves. One end of the two threaded rods extending to the outer side of the movable grooves is threadedly sleeved with nuts. The two connecting plates 62 are slidably connected with the support shaft 63, and a photoelectric sensor 64 is installed on the support shaft 63. The two photoelectric sensors 64 are both externally connected to the output end of the driving cylinder. The inner edge of the photoelectric sensor 64 is aligned with the outer edge of the polyurethane rubber roller 610. The two upper polyurethane rubber rollers 610 are slidably connected to the lifting slide rail 69 through a slider. The output ends of the two lifting cylinders 68 are fixed to the bottom of the slider. The edge suction frame 6 also includes a fixed square tube 65, a slide seat plate 66 and a polyurethane rubber roller 610. A fixed square tube Tube 65, and square slide rails 67 are symmetrically arranged on the top surface of the fixed square tube 65, slide plates 66 are slidably arranged on the two square slide rails 67, lifting slide rails 69 are arranged on the opposite sides of the upper parts of the two slide plates 66, polyurethane rubber rollers 610 are slidably arranged on the two lifting slide rails 69, another polyurethane rubber roller 610 is arranged on the slide plate 66 below the two lifting slide rails 69, a lifting cylinder 68 is arranged at the lower part of the slide plate 66, and the output end of the lifting cylinder 68 is connected to the bottom of the polyurethane rubber roller 610 for clamping the film and correcting the deviation, and the other two polyurethane rubber rollers 610 are installed on the side wall of the slide plate 66 through a bracket, and both ends of the top surface of the lower support frame 61 on the side of the fixed square tube 65 are symmetrically rotatably connected with limiting rollers 612, and the length of each limiting roller 612 is less than half of the internal width of the lower support frame 61, and the limiting roller 612 is rotatably connected with a guide roller 611 inside the lower support frame 61 away from the support shaft 63 side through a bearing seat.

[0035] Specifically, during the movement of the film raw material of the liner bag, the film is guided by the guide roller 611 and the limit roller 612, and the film is passed between the two polyurethane rubber rollers 610 and the middle of the photoelectric sensor 64, and the edge of the film is positioned by the photoelectric sensor 64. When the photoelectric sensor 64 detects that the edge of the film is offset, the system receives the offset signal, and the lifting cylinder 68 drives the polyurethane rubber roller 610 to move downward, and cooperates with the other polyurethane rubber roller 610 to clamp the film and pull it to the other side of the offset to correct the deviation of the film. After the deviation correction is completed, the lifting cylinder 68 drives the polyurethane rubber roller 610 to move upward to loosen the film, thereby avoiding the deviation of the film.

[0036] The trimming mechanism 7 includes a trimming frame 71, a guide rail 72, a drive motor 73, a vibrating knife body 74 and a vibrating knife 75. The guide rail 72 is fixedly installed on the upper part of the trimming frame 71, the drive motor 73 is fixedly installed on the top of the guide rail 72, the vibrating knife body 74 is fixedly installed on the telescopic end of the drive motor 73, and the vibrating knife 75 is installed on the lower end of the vibrating knife body 74.

[0037] By controlling the driving motor 73 to move along the guide rail 72 , the vibrating blade body 74 and the vibrating blade 75 are driven to cut the material.

[0038] It will be apparent to those skilled in the art that the present application is not limited to the details of the exemplary embodiments described above, and that the present application can be implemented in other specific forms without departing from the spirit or essential features of the present application. Therefore, the embodiments should be considered exemplary and non-limiting in all respects, and the scope of the present application is defined by the appended claims rather than the above description, and it is intended that all changes within the meaning and scope of the equivalent elements of the claims be included in the present application. Any reference numeral in a claim should not be considered as limiting the claim to which it relates.

[0039] As described above, the above embodiments are only used to illustrate the technical solutions of the present application, rather than to limit them. Although the present application has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that they can still modify the technical solutions described in the aforementioned embodiments, or make equivalent replacements for some of the technical features therein. However, these modifications or replacements do not deviate the essence of the corresponding technical solutions from the spirit and scope of the technical solutions of the embodiments of the present application.

Claims

1. A new type of bottleneck inner bag forming machine, characterized by: The invention comprises an unwinding frame (1), a film traction frame (2) is arranged on the side of the unwinding frame (1), and a straight ironing frame (3) is arranged on the side of the film traction frame (2) away from the unwinding frame (1), a bottleneck frame (4) is arranged on the side of the straight ironing frame (3) away from the film traction frame (2), and a bottleneck frame (5) is arranged on the side of the bottleneck frame (4) away from the straight ironing frame (3), an edge suction frame (6) is arranged on the side of the bottleneck frame (5) away from the bottleneck frame (4), an ultrasonic deflection correction photoelectric component is arranged in the edge suction frame (6), and a trimming mechanism (7) is arranged on the side of the edge suction frame (6) away from the bottleneck frame (5).

2. The new bottleneck inner bag forming machine according to claim 1 is characterized by: The bottleneck frame (4) comprises an upper support frame (41) and a fixed frame (42), the fixed frame (42) being arranged on the inner side of the top surface of the upper support frame (41), and a plurality of mold hanging cylinders (43) being arranged equidistantly inside the upper support frame (41) on both sides of the top surface of the fixed frame (42), and the output end of each of the mold hanging cylinders (43) is fixed on the top surface of the fixed frame (42).

3. The new bottleneck inner bag forming machine according to claim 2 is characterized by: The bottleneck frame (4) further comprises a fixed nut block (44) and a mold mounting plate (45). The bottom surface of the middle part of the fixed frame (42) is symmetrically provided with an adjusting screw rod (46). Both of the adjusting screw rods (46) are connected to the fixed nut block (44) through a bearing, and the fixed nut block (44) is fixed to the bottom surface of the fixed frame (42). Both of the adjusting screw rods (46) are threadedly sleeved with a movable slider (47). The bottom surface of the mold hanging cylinder (43) is symmetrically provided with a mold mounting plate (45). The bottom surfaces of the two movable sliders (47) are respectively fixed on the top surface of the mold mounting plate (45), and another movable slider (47) is fixed on the top surface of the mold mounting plate (45) on both sides of the two adjusting screw rods (46). The other movable slider (47) is slidably sleeved on the limiting slide rod (48), and both ends of the limiting slide rod (48) are fixed on another fixed nut block (44), and the top surface of the other fixed nut block (44) is fixed on the bottom surface of the fixed frame (42).

4. The new bottleneck inner bag forming machine according to claim 3 is characterized by: A hand wheel (49) is fixed to one end of the two adjusting screw rods (46) extending to the outside of the fixed frame (42), and threads cooperating with the adjusting screw rods (46) are arranged inside the two moving sliders (47) in the middle.

5. The new bottleneck inner bag forming machine according to claim 1 is characterized by: The straight ironing frame (3) and the second bottle neck frame (5) are both provided with another set of fixed nut blocks (44), a mold mounting plate (45), an adjusting screw rod (46), a movable slider (47), a limiting slider (48) and a hand wheel (49).

6. The new bottleneck inner bag forming machine according to claim 1 is characterized by: The edge suction frame (6) comprises a lower support frame (61), a connecting plate (62) and a supporting shaft (63); a connecting plate (62) is symmetrically fixed on the outer side of the top surface of the lower support frame (61); a supporting shaft (63) is slidably connected between the two connecting plates (62), and a photoelectric sensor (64) is installed on the supporting shaft (63).

7. The new bottleneck inner bag forming machine according to claim 6 is characterized by: The edge suction frame (6) also includes a fixed square tube (65), a slide plate (66) and a polyurethane rubber roller (610). The fixed square tube (65) is fixed on the lower support frame (61) below the support shaft (63), and a square slide rail (67) is symmetrically arranged on the top surface of the fixed square tube (65). The two square slide rails (67) are both slidably arranged with a slide plate (66). The upper opposite sides of the two slide plates (66) are both provided with a lifting slide rail (69). The two lifting slide rails (69) are both slidably arranged with a polyurethane rubber roller (610). Another polyurethane rubber roller (610) is arranged on the slide plate (66) below the two lifting slide rails (69). A lifting cylinder (68) is arranged at the bottom of the slide plate (66), and the output end of the lifting cylinder (68) is connected to the bottom of the polyurethane rubber roller (610) for clamping the film and correcting the deviation.

8. The new bottleneck inner bag forming machine according to claim 6 is characterized by: The upper parts of the two connecting plates (62) are both provided with movable grooves, and threaded rods are fixed at both ends of the support shaft (63), and the threaded rods are slidably inserted in the movable grooves, and the ends of the two threaded rods extending to the outside of the movable grooves are both threadedly sleeved with nuts.

9. The new bottleneck inner bag forming machine according to claim 7 is characterized by: The two photoelectric sensors (64) are both connected to the output end of the external driving cylinder. The inner edge of the photoelectric sensor (64) is aligned with the outer edge of the polyurethane rubber roller (610). The two upper polyurethane rubber rollers (610) are slidably connected to the lifting slide rail (69) through a slider. The output ends of the two lifting cylinders (68) are fixed to the bottom of the slider. The other two polyurethane rubber rollers (610) are installed on the side wall of the slide plate (66) through a bracket. Both ends of the top surface of the lower support frame (61) on the side of the fixed square tube (65) are symmetrically rotatably connected to the limiting rollers (612). The length of each limiting roller (612) is less than half of the internal width of the lower support frame (61). The limiting roller (612) is rotatably connected to the guide roller (611) inside the lower support frame (61) away from the support shaft (63) through a bearing seat.

10. The new bottleneck inner bag forming machine according to claim 7 is characterized in that: The edge trimming mechanism (7) comprises an edge trimming frame (71), a guide rail (72), a drive motor (73), a vibrating knife body (74) and a vibrating knife (75); the guide rail (72) is fixedly mounted on the upper part of the edge trimming frame (71); the drive motor (73) is fixedly mounted on the top of the guide rail (72); the vibrating knife body (74) is fixedly mounted on the telescopic end of the drive motor (73); and the vibrating knife (75) is mounted on the lower end of the vibrating knife body (74).

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