Automatic bag feeding device of packaging machine

Abstract

The present application provides an automatic bag feeding device for a packaging machine, belonging to the technical field of film conveying devices, comprising a bracket, a packaging film roller and a packaging film roll, wherein a first group of film-penetrating rollers, a first group of telescopic cylinders and a second group of film-penetrating rollers are installed on the bracket, the first group of telescopic cylinders are used to drive the first group of film-penetrating rollers to move vertically, a sliding base is installed on the bracket, a fixed roller and a sliding roller are installed on the sliding base, the sliding roller is used to approach or move away from the fixed roller, the fixed roller and the sliding roller are used to clamp the packaging film, and a second adsorption hole for adsorbing the packaging film is provided on the fixed roller; the present application can change the film-penetrating position of the horizontally distributed packaging film by the up and down movement of the induction roller and the first group of film-penetrating rollers, simplify the film-penetrating operation, adhere the tape to the end of the packaging film by the automatic adhesive component, and complete the cutting of the end of the packaging film by the automatic cutting component, thereby improving work efficiency.

Description

Technical Field

[0001] The present application relates to the technical field of film conveying devices, and in particular to an automatic bag conveying device of a packaging machine. Background Art

[0002] Vertical packaging machines are suitable for single or multiple automatic packaging in industries such as medicines, health products, food, tea, cosmetics, and stationery. They are used to form a middle-packing device to seal the packaged items. During the use of existing vertical packaging machines, the film roll needs to be fixed on the vertical packaging machine first. In order to facilitate the film to enter the bag former, the front end of the film needs to be cut into a triangle before passing through the film. Then the worker completes the film passing in sequence according to the film route, and then passes it through the bag former, and finally performs the packaging task.

[0003] Referring to the Chinese patent document of the film-loading and film-rolling machine with the announcement number CN118373237B and the name of a high-efficiency three-dimensional transparent film packaging machine, the film-loading and film-rolling machine includes a fixing frame, a spring connector, a limit card plate, a film-loading column, a film-rolling cylinder and a brake cylinder. When in use, firstly put the transparent film on the film-loading column, pull one end of the film through the outer surface of the film-rolling cylinder, and then pass through the outer surface of the brake cylinder in turn, repeat the above steps, and finally pull the transparent film out from the outer surface of the upper leftmost film-rolling cylinder to connect with the external film-pulling component; the spring connector can drive the fixing frame and the limit card plate to complete the contact with the film-rolling cylinder, complete the limit and positioning of the film-rolling cylinder, so as to facilitate the replacement and maintenance of the film-rolling cylinder.

[0004] Referring to the above technical solution, before the film passes through the bag former, it is necessary to pass the film through multiple rollers in sequence to ensure the guidance, tensioning, and flattening of the film during the transmission process. Therefore, the packaging film needs to pass through multiple rollers with different heights and spacings. Since the packaging film is soft and the heights and spacings of the multiple rollers are different, the travel path of the packaging film is often complicated during the film passing process. The packaging film may swing randomly and fold and deform, thereby affecting the subsequent work. Summary of the invention

[0005] In view of this, the present application provides an automatic bag feeding device for a packaging machine, which is mainly used to solve the problems of complex film penetration path and random swinging, folding and deformation of the film.

[0006] In order to solve the above-mentioned technical problems, the present application provides an automatic bag feeding device of a packaging machine, including a bracket, a packaging film roller and a packaging film roll. A first group of film-penetrating rollers, a first group of telescopic cylinders and a second group of film-penetrating rollers are installed on the bracket. The first group of telescopic cylinders is used to drive the first group of film-penetrating rollers to move vertically. A sliding base is installed on the bracket. A fixed roller and a sliding roller are installed on the sliding base. The sliding roller is used to approach or move away from the fixed roller. The fixed roller is provided with a second adsorption hole for adsorbing the packaging film. The fixed roller and the sliding roller are used to clamp the packaging film. The bracket is provided with an adhesive piece for adhering tape to the packaging film. The sliding base is provided with a locking piece for preventing the fixed roller from rotating and a cutting piece for cutting the end of the packaging film into a triangle.

[0007] By adopting the above technical scheme, the first group of film-threading rollers are located on the same horizontal plane as the second group of film-threading rollers in the original state, and the sliding roller can approach or move away from the fixed roller under the drive of external force. When the sliding roller approaches the fixed roller, the fixed roller and the sliding roller can clamp one end of the packaging film, and the sliding base can drive the fixed roller and the sliding roller to move, thereby unwinding the packaging film. When the packaging film is covered directly above the first group of film-threading rollers and the second group of film-threading rollers, the first group of telescopic cylinders can drive the first group of film-threading rollers to move vertically upward, thereby changing the transmission path of the packaging film. In the process of conveying the packaging film, the second adsorption hole can adsorb the end of the packaging film on the fixed roller.

[0008] Optionally, the adhesive component includes a second group of telescopic cylinders fixedly mounted on the bracket, the second group of telescopic cylinders is provided with a tape roller, the tape roller is provided with an adsorption plate for adsorbing the non-adhesive surface of the tape, the adsorption plate is provided with a first adsorption hole, and cutting teeth are fixedly mounted on the adsorption plate.

[0009] By adopting the above technical solution, the second group of telescopic cylinders can drive the tape roller to move vertically up and down, so that the tape on the adsorption plate contacts the packaging film, and in the process of the packaging film moving, the tape is adhered to the end of the packaging film, and the cutting teeth move upward under the drive of the second group of telescopic cylinders to cut the tape. Adhering the tape to the end of the packaging film can increase the hardness of the end of the packaging film, making it easier for the end of the packaging film to pass through the bag former.

[0010] Optionally, the locking member includes a locking plate slidably mounted on a sliding base, a first gear is arranged on the fixed roller, a linkage gear is meshed on the first gear, a locking gear is meshed on the linkage gear, a connecting plate is connected between the first gear and the locking gear, the first gear, the linkage gear and the locking gear are all arranged on the connecting plate, the locking groove on the locking plate is used to lock the locking gear, and a first return spring is connected between the sliding base and the locking plate.

[0011] By adopting the above technical solution, the first return spring can drive the locking groove on the locking plate to engage with the first gear, thereby preventing the fixed roller from rotating around its own axis.

[0012] Optionally, the locking member further includes an abutment plate disposed on the bracket, and the abutment plate is used to release the locking of the locking plate on the locking gear.

[0013] By adopting the above technical solution, when the locking plate on the sliding base contacts the abutment plate, the abutment plate prevents the locking plate from continuing to slide, thereby unlocking the locking gear.

[0014] Optionally, the cutting piece includes a bidirectional lead screw arranged on the locking gear, two sliding blocks are installed on the bidirectional lead screw, a limit rod is arranged on the sliding base, and a cutting blade is fixedly installed on the sliding block.

[0015] By adopting the above technical solution, the first gear can synchronously drive the linkage gear and the locking gear to rotate during the rotation process, and then the bidirectional screw connected to the locking gear rotates. Under the limit of the limit rod, the two sliding blocks move to both sides respectively, driving the cutting blade to slide, and the end of the packaging film can be cut into a triangle.

[0016] Optionally, an auxiliary shaft is installed on the bracket, a transmission member is connected to the auxiliary shaft, and a transmission roller for driving the packaging film roll to rotate is installed on the transmission member.

[0017] By adopting the above technical solution, the transmission roller rotates around its own axis driven by the transmission member, so that the packaging film abutting against the transmission roller 15 can be wound around the packaging film roller to rotate.

[0018] Optionally, a sensor is installed on the bracket, an L-shaped slide groove is opened on the bracket, and an induction roller is arranged on the L-shaped slide groove.

[0019] By adopting the above technical solution, the induction roller can slide on the L-shaped slide groove and can be clamped on the L-shaped slide groove to change the placement position. When the packaging film passes through the induction roller, the transmission speed of the packaging film and the length of the film transmitted each time are determined by the sensor.

[0020] Optionally, a driving member for driving the sliding base to slide is provided on the bracket, and the driving member includes two driving motors fixedly mounted on the sliding base, and a driving gear is installed on the output shaft of the driving motor. A toothed plate is provided on the bracket, and the toothed plate meshes with the driving gear.

[0021] By adopting the above technical solution, the output shaft of the driving motor drives the driving gear to rotate, and the toothed plate meshing with the driving gear is fixed, so that the sliding base can move.

[0022] In summary, compared with the prior art, the present application includes at least one of the following beneficial technical effects:

[0023] 1. After the packaging film is unwound horizontally, the telescopic parts drive the feeding roller to move in different positions to realize the complex feeding path of the packaging film. Compared with the traditional packaging film winding around the feeding roller in sequence, the operation is simple, and the probability of folding and deformation of the packaging film during winding can be reduced, thereby ensuring the work quality of the packaging film winding and improving work efficiency.

[0024] 2. Use adhesive tape to stick to the end of the packaging film through the adhesive piece to increase the thickness of the end of the packaging film, so as to facilitate the subsequent end of the packaging film to pass through the bag former.

[0025] 3. By driving the bidirectional screw rod, the blade can be driven to automatically cut the end of the packaging film to ensure work efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0026] Figure 1 This is a schematic structural diagram of an automatic bag feeding device of a packaging machine of the present application;

[0027] Figure 2 The state distribution of the first group of film-piercing rollers, the second group of film-piercing rollers and the induction roller of this application Figure 1 ;

[0028] Figure 3 The state distribution of the first group of film-piercing rollers, the second group of film-piercing rollers and the induction roller of this application Figure 2 ;

[0029] Figure 4 This is a schematic diagram of the packaging film path structure of this application;

[0030] Figure 5 This is a schematic diagram of the structure of the adhesive part, locking part and cutting part of this application;

[0031] Figure 6 This is a schematic diagram of the structure of the adhesive member of this application;

[0032] Figure 7 This is a schematic diagram of the structure of the cut piece for this application;

[0033] Figure 8 This is a schematic diagram of the structure of the locking member of this application;

[0034] Fig. 9 For this application Figure 1 A is a schematic diagram of the partially enlarged structure.

[0035] Description of the reference numerals: 1. bracket; 11. packaging film roller; 12. packaging film roll; 13. auxiliary shaft; 14. transmission member; 15. transmission roller; 2. mold-piercing member; 21. first group of film-piercing rollers; 22. first group of telescopic cylinders; 23. second group of film-piercing rollers; 24. sliding base; 25. fixed roller; 26. sliding roller; 27. second adsorption hole; 28. third group of telescopic cylinders; 3. adhesive member; 31. second group of telescopic cylinders; 32. tape roller; 33. adsorption plate; 34. cutting teeth; 4. Locking member; 41, locking plate; 42, first gear; 43, linkage gear; 44, locking gear; 45, first return spring; 46, abutment plate; 47, rotating plate; 5, cutting member; 51, bidirectional screw rod; 52, sliding block; 53, limit rod; 54, cutting blade; 55, supporting rod; 56, second return spring; 6, quantitative film transfer member; 61, sensor; 62, L-shaped slide; 63, induction roller; 7, driving member; 71, driving motor; 72, driving gear; 73, tooth plate. DETAILED DESCRIPTION

[0036] In order to make the purpose, technical solutions and advantages of the embodiments of the present application clearer, the following will be combined with the embodiments of the present application. Figure 1-Figure 9 , the technical scheme of the embodiment of the present application is clearly and completely described. Obviously, the described embodiment is a part of the embodiment of the present application, not all of the embodiments. Based on the described embodiment of the present application, all other embodiments obtained by ordinary technicians in this field belong to the scope of protection of this application.

[0037] Reference Figure 1 , Figure 2 , Figure 3 , Figure 5 and Fig. 9 The present embodiment provides an automatic bag feeding device of a packaging machine, comprising a support 1, a mold-piercing member 2, a pasting member 3, a locking member 4, a cutting member 5, a quantitative film-transfer member 6 and a driving member 7. The support 1 is composed of two identical plates and a connecting rod, the connecting rod is located between the two plates, the mold-piercing member 2 comprises a sliding base 24, the sliding base 24 is driven by a driving member 7 installed on the support 1, the mold-piercing member 2 for assisting the passing of the packaging film and the pasting member 3 for driving the adhesive tape to adhere to the packaging film are installed on the support 1, the locking member 4 and the cutting member 5 for cutting the end of the packaging film are arranged on the sliding base 24, and the quantitative film-transfer member 6 for sensing the conveying speed and length of the packaging film is arranged on the support 1.

[0038] Reference Figure 1The support 1 is provided with a packaging film roller 11, a packaging film roll 12, an auxiliary shaft 13, a transmission member 14 and a transmission roller 15. The support 1 is fixedly provided with the packaging film roller 11, the packaging film roll 12 is wound on the packaging film roller 11, the support 1 is provided with an auxiliary shaft 13 located at one side of the packaging film roll 12, the transmission member 14 is connected to the auxiliary shaft 13, the transmission roller 15 is installed on the output source of the transmission member 14, the surface of the transmission roller 15 is in contact with the outer side of the packaging film roll 12, the surface of the transmission roller 15 is made of rubber, when the transmission roller 15 rotates around its own axis, there is a certain friction force in the process of the rubber contacting with the packaging film roll 12, and the packaging film roll 12 can be driven to roll.

[0039] When in use, firstly, the packaging film roll 12 is sleeved on the packaging film roller 11, so that the transmission roller 15 abuts against the packaging film roll 12. When the packaging film roll 12 needs to be unwound, the transmission member 14 on the auxiliary shaft 13 is started, and the transmission member 14 drives the transmission roller 15 to rotate, thereby causing the packaging film roll 12 abutting against the transmission roller 15 to rotate.

[0040] Reference Figure 2 The mold-piercing member 2 includes a first set of film-piercing rollers 21, a first set of telescopic cylinders 22, and a second set of film-piercing rollers 23. The second set of film-piercing rollers 23 are arranged in two pieces and are rotatably arranged between the two plates of the bracket 1. The first set of telescopic cylinders 22 are arranged in four pieces and are arranged in two pieces on each plate. Slots are provided on the plates on both sides of the bracket 1. The positions of the slots correspond to the piston rods of the first set of telescopic cylinders 22. The piston rods of the first set of telescopic cylinders 22 are connected with the first set of film-piercing rollers 21 that pass through the slots. The first set of film-piercing rollers 21 are arranged in two pieces.

[0041] Reference Figure 2 , Figure 3 and Figure 7 The mold-piercing member 2 further includes a sliding base 24, a fixed roller 25, a sliding roller 26, a third group of telescopic cylinders 28 and a second adsorption hole 27. The sliding base 24 is slidably arranged between the two plates of the bracket 1 and is located directly above the second group of film-piercing rollers 23. The fixed roller 25 and the sliding roller 26 are both rotatably mounted on the sliding base 24. The sliding base 24 is provided with a third group of telescopic cylinders 28 for driving the sliding roller 26 to move horizontally. The curved side wall of the fixed roller 25 is provided with a second adsorption hole 27 for adsorbing the packaging film. The second adsorption hole 27 is air-absorbed through the connected absorber.

[0042] When in use, the third group of telescopic cylinders 28 is started to drive the sliding roller 26 to approach the fixed roller 25, and one end of the packaging film is clamped between the fixed roller 25 and the sliding roller 26. The sliding base 24 drives the fixed roller 25 and the sliding roller 26 to slide horizontally. The sliding base 24 slides from directly below the packaging film roller 11 to the lower side of the packaging film roller 11. Then, the first group of telescopic cylinders 22 is started to drive the first group of film-threading rollers 21 to slide vertically upward, so that the horizontally distributed packaging film changes its direction path.

[0043] Reference Figure 6 The adhesive member 3 includes a second group of telescopic cylinders 31, a tape roller 32, an adsorption plate 33, a first adsorption hole and cutting teeth 34. The second group of telescopic cylinders 31 is provided in two and symmetrically mounted on the two plates of the bracket 1. The second group of telescopic cylinders 31 is arranged just above the first group of film-piercing rollers 21 and the second group of film-piercing rollers 23. A tape roller 32 is connected between the piston rods of the second group of telescopic cylinders 31. The tape roller 32 is sleeved with a tape. An adsorption plate 33 is fixedly mounted on the tape roller 32 through a U-shaped plate. The adsorption plate 33 is tilted to facilitate the tape to be adhered to the surface of the moving packaging film. The interior of the adsorption plate 33 is a hollow structure. The adsorption plate 33 is provided with a first adsorption hole for adsorbing the non-adhesive surface of the tape. A suction device is connected to one side of the adsorption plate 33. The cutting teeth 34 are arranged on the adsorption plate 33 for cutting the tape.

[0044] When in use, first start to tear off the end of the tape, and make the absorber suck air to the first absorption hole, and the first absorption hole sucks air to the non-adhesive surface of the tape, so that the non-adhesive surface of the tape is tightly attached to the absorption plate 33, and then start the piston rod on the second telescopic cylinder to extend and retract, and the second telescopic cylinder drives the tape roller 32 and the absorption plate 33 to move vertically downward, so that the tape on the absorption plate 33 contacts the packaging film being conveyed, and the tape sticks to the packaging film. After sticking for a certain distance, start the second telescopic cylinder to drive the absorption plate 33 to move upward, and synchronously, the cutting teeth 34 cut the tape.

[0045] Reference Figure 8 The locking member 4 includes a locking plate 41 , a first gear 42 , a linkage gear 43 , a locking gear 44 , a first return spring 45 and an abutting plate 46 . The locking plate 41 is set to be L-shaped and slidably installed on the sliding base 24 and is arranged horizontally. A locking groove is opened on the locking plate 41, and the locking groove is arranged on the vertical surface of the L-shaped plate. The first gear 42 is arranged at the end of the fixed roller 25. Through the connection of the connecting plate, a linkage gear 43 is meshed on the first gear 42, and a locking gear 44 is meshed on the linkage gear 43. A rod is set through the plate on the sliding base 24, and the other end of the plate is fixedly connected to the locking plate 41. A first return spring 45 is arranged around the rod. The two ends of the first return spring 45 are respectively fixedly connected to the plate and the locking plate 41. The abutment plate 46 is fixedly set on the bracket 1. When the sliding base 24 moves, when the locking plate 41 contacts the abutment plate 46, the first return spring 45 is compressed by resistance, and the locking groove on the locking plate 41 cancels the locking of the locking gear 44.

[0046] When in use, when the sliding base 24 moves to the right, when one end of the locking plate 41 contacts the abutment plate 46, the locking plate 41 slides to the left under the resistance of the abutment plate 46, and the locking groove cancels the lock on the locking gear 44. When the abutment plate 46 separates from the locking plate 41, the first return spring 45 restores the elastic force, driving the locking plate 41 to return to its original position, and the locking groove engages with the locking gear 44.

[0047] Reference Figure 7 The cutting piece 5 includes a bidirectional screw rod 51, a sliding block 52, a limiting rod 53, a cutting blade 54, a connecting plate, a supporting rod 55 and a second return spring 56. The bidirectional screw rod 51 is arranged on the locking gear 44, and two sliding blocks 52 are installed on the bidirectional screw rod 51. The two sliding blocks 52 move inward or to both sides at the same time. A limiting rod 53 is arranged on the sliding base 24. The limiting rod 53 prevents the sliding block from rotating. A cutting blade 54 is fixedly installed on the sliding block 52. The cutting blade 54 cuts the packaging film during the sliding process. A rotating plate 47 is rotatably arranged at the end of the bidirectional screw rod 51. The other end of the rotating plate 47 is fixedly connected to one end of the fixed roller 25. A supporting rod 55 is vertically slidably installed on the sliding base 24. The supporting rod 55 supports the rotating plate 47. A second return spring 56 is arranged on the supporting rod 55. Torsion springs are also arranged at both ends of the fixed shaft.

[0048] When in use, the packaging film on the fixed roller 25 is pulled to slide the packaging film and drive the fixed roller 25 to rotate. Under the connection of the rotating plate 47, the rotating plate 47 rotates a certain angle around the central axis of the bidirectional screw rod 51, and the supporting rod 55 is pressed down. The packaging film on the fixed roller 25 contacts the cutting blade 54, and the fixed roller 25, the linkage gear 43, the locking gear 44, and the bidirectional screw rod 51 rotate synchronously. During the rotation of the bidirectional screw rod 51, the cutting blade 54 slides to both sides at the same time, and the packaging film contacts the cutting blade 54 while moving, cutting the end of the packaging film and cutting the end into a triangle; then the end of the packaging film is separated from the surface of the fixed roller 25, and under the recovery of the elastic force of the second return spring 56, the supporting rod 55 pushes the fixed roller 25 to move upward.

[0049] Reference Figure 1 , Figure 3 and Figure 4 The quantitative film conveying member 6 includes a sensor 61, an L-shaped slide groove 62 and a sensing roller 63. The sensor 61 is fixedly mounted on one of the plates of the bracket 1. Both plates of the bracket 1 are provided with an L-shaped slide groove 62. A sensing roller 63 is clamped between the two L-shaped slide grooves 62. The packaging film passes through the sensing roller 63 during the film passing process. The transmission speed and length of the packaging film can be controlled by the sensor 61.

[0050] Reference Figure 2 and Fig. 9The driving member 7 includes a driving motor 71, a driving gear 72 and a tooth plate 73. The driving motor 71 is fixedly mounted at the bottom of the sliding base 24 and is provided with two. The driving gear 72 is connected to the output shaft of the driving motor 71, and the sliding base 24 is provided with a tooth plate 73. When the driving motor 71 drives the driving gear 72 to rotate, the driving gear 72 meshes with the teeth on the tooth plate 73. The tooth plate 73 is fixed, and the sliding base 24 is driven to move. The sliding base 24 is driven to move left or right through the forward or reverse rotation of the driving gear 72.

[0051] The implementation principle of the automatic bag feeding device of a packaging machine in the embodiment of the present application is as follows:

[0052] When using the device, firstly, the first group of telescopic cylinders 22 are started to drive the first group of film-piercing rollers 21 to move, so that the first group of film-piercing rollers 21 and the second group of film-piercing rollers 23 are kept horizontal, and the driving member 7 moves the sliding base 24 to the right below the packaging film roll 12, and then clamps one end of the packaging film between the fixed roller 25 and the sliding roller 26, and the driving member 7 drives the sliding base 24 and the parts on the sliding base 24 to slide to the right, driving the packaging film to cover the first group of film-piercing rollers 21 and the second group of film-piercing rollers 23, and at this time, the induction roller 63 is located above the packaging film;

[0053] During the sliding of the sliding base 24 to the right, when the sliding base 24 slides to the right side slightly below the adhesive member 3, the second group of telescopic cylinders 31 drives the tape roller 32 to move downward, and the adhesive surface of the tape contacts and adheres to the surface of the packaging film. At this time, the sliding base 24 continues to move to the right. After the tape is adhered to a certain distance, the second group of telescopic cylinders 31 drives the tape roller 32 to move upward, and the tape is cut under the action of the cutting teeth 34.

[0054] Then the abutment plate 46 contacts the locking plate 41, the locking groove cancels the locking of the locking gear 44, and the sliding roller 26 is moved away from the fixed roller 25 by starting the third group of telescopic cylinders 28. At this time, the packaging film is sequentially wound from the top of the fixed roller 25 to the bottom of the sliding roller 26; then the staff pulls the end of the packaging film on the fixed roller 25 to move downward at an angle, and the fixed roller 25 is subjected to a slight downward pressure, which can make the rotating plate 47 slightly rotate around the bidirectional screw 51. The synchronous second adsorption hole 27 increases the adsorption force on the packaging film. Under the action of the slight rotation of the rotating plate 47 and the adsorption force of the second adsorption hole 27, the packaging film with the tape can be brought into contact with the cutting blade 54;

[0055] The fixed roller 25 rotates while driving the first gear 42, the linkage gear 43, the locking gear 44 and the bidirectional screw 51 to rotate, and the sliding block 52 on the bidirectional screw 51 moves to both sides;

[0056] The two cutting blades 54 separate to both sides, and the packaging film slides to the right synchronously, and the end of the packaging film with the adhesive tape is cut into a triangle.

[0057] After cutting is completed, the elastic force of the second return spring 56 is released, driving the support rod 55 to move vertically upward and press against the rotating plate 47 to return to its original position. The torsion spring on the fixed roller 25 restores its original torque, driving the first gear 42, the linkage gear 43, the locking gear 44 and the bidirectional screw 51 to rotate reversely, so that the sliding block 52 returns to its original position.

[0058] Then the third group of telescopic cylinders 28 are started to make the sliding rollers 26 close to the fixed rollers 25 to clamp the packaging film. Figure 4 As shown, the induction roller 63 is made to slide to the bottom of the L-shaped slide groove 62, the first group of telescopic cylinders 22 is started to drive the first group of film-piercing rollers 21 to move upward, and the driving member 7 is started to drive the sliding base 24 and the parts on the sliding base 24 to slide to the left between the two groups of first film-piercing rollers 21. At this time, the packaging film passes through the second group of film-piercing rollers 23 on the left, the induction roller 63, the second group of film-piercing rollers 23 on the right, the first group of film-piercing rollers 21 on the left, the first group of film-piercing rollers 21 on the right and the sliding roller 26 in sequence to determine the movement of the packaging film.

[0059] In addition, it should be noted that in the description of this application, unless otherwise clearly specified and limited, the terms "installed", "connected", and "connected" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be indirectly connected through an intermediate medium, or it can be the internal communication of two components. For those skilled in the art, the specific meanings of the above terms in this application can be understood according to specific circumstances.

[0060] The above is a preferred embodiment of the present application. It should be pointed out that for ordinary technicians in this technical field, several improvements and modifications can be made without departing from the principles described in the present application. These improvements and modifications should also be regarded as the scope of protection of the present application.

Claims

1. An automatic bag feeding device for a packaging machine, comprising a bracket (1), a packaging film roller (11) and a packaging film roll (12), characterized in that: The support (1) is provided with a first group of film-penetrating rollers (21), a first group of telescopic cylinders (22) and a second group of film-penetrating rollers (23); the first group of telescopic cylinders (22) is used to drive the first group of film-penetrating rollers (21) to move vertically; a sliding base (24) is provided on the support (1); a fixed roller (25) and a sliding roller (26) are provided on the sliding base (24); the sliding roller (26) is used to move closer to or farther from the fixed roller (25); the fixed roller (25) and the sliding roller (26) are used to clamp the packaging film; and a second adsorption hole (27) for adsorbing the packaging film is provided on the fixed roller (25); The support (1) is provided with an adhesive member (3) for adhering the adhesive tape to the packaging film, and the sliding base (24) is provided with a locking member (4) for preventing the fixed roller (25) from rotating and a cutting member (5) for cutting the end of the packaging film into a triangle.

2. The automatic bag feeding device of a packaging machine according to claim 1, characterized in that: The adhesive member (3) comprises a second group of telescopic cylinders (31) fixedly mounted on the bracket (1); a tape roller (32) is provided on the second group of telescopic cylinders (31); an adsorption plate (33) for adsorbing the non-adhesive surface of the tape is provided on the tape roller (32); a first adsorption hole is provided on the adsorption plate (33); and cutting teeth (34) are fixedly mounted on the adsorption plate (33).

3. The automatic bag feeding device of a packaging machine according to claim 1, characterized in that: The locking member (4) comprises a locking plate (41) slidably mounted on a sliding base (24); a first gear (42) is arranged on the fixed roller (25); a linkage gear (43) is meshedly arranged on the first gear (42); a locking gear (44) is meshedly arranged on the linkage gear (43); a connecting plate is connected between the first gear (42) and the locking gear (44); the first gear (42), the linkage gear (43) and the locking gear (44) are all arranged on the connecting plate; a locking groove on the locking plate (41) is used to lock the locking gear (44); and a first return spring (45) is connected between the sliding base (24) and the locking plate (41).

4. The automatic bag feeding device of a packaging machine according to claim 3, characterized in that: The locking member (4) further comprises an abutment plate (46) arranged on the bracket (1), and the abutment plate (46) is used to release the locking of the locking plate (41) on the locking gear (44).

5. The automatic bag feeding device of a packaging machine according to claim 1, characterized in that: The cutting piece (5) comprises a bidirectional screw rod (51) arranged on a locking gear (44), two sliding blocks (52) being mounted on the bidirectional screw rod (51), a limiting rod (53) being arranged on the sliding base (24), and a cutting blade (54) being fixedly mounted on the sliding block (52).

6. The automatic bag feeding device of a packaging machine according to claim 1, characterized in that: An auxiliary shaft (13) is mounted on the bracket (1), a transmission member (14) is connected to the auxiliary shaft (13), and a transmission roller (15) for driving the packaging film roll (12) to rotate is mounted on the transmission member (14).

7. The automatic bag feeding device of a packaging machine according to claim 6, characterized in that: The bracket (1) is provided with a sensor (61), the bracket (1) is provided with an L-shaped slide groove (62), and the L-shaped slide groove (62) is provided with a sensing roller (63).

8. The automatic bag feeding device of a packaging machine according to claim 1, characterized in that: The bracket (1) is provided with a driving member (7) for driving the sliding base (24) to slide. The driving member (7) comprises two driving motors (71) fixedly mounted on the sliding base (24). The output shaft of the driving motor (71) is mounted with a driving gear (72). The bracket (1) is provided with a toothed plate (73), and the toothed plate (73) meshes with the driving gear (72).

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