Feeding device for packaging bag production

Abstract

The invention provides a feeding device for packaging bag production, and belongs to the technical field of packaging bag production, and the feeding device comprises a machine body, and a conveying assembly, a fixing assembly, a cutting assembly and a smoothing assembly which are arranged on the machine body. According to the packaging bag feeding device, the arranged conveying assembly is matched with the fixing assembly so that coiled packaging bags can be rapidly and independently fed and fixed, the time for feeding one packaging bag at a time is saved, then the follow-up machining speed is increased, the arranged conveying assembly is matched with the cutting assembly, intermittent work is achieved under the cooperation of two sets of semi-ring teeth and gears, and the working efficiency is improved. According to the packaging bag cutting and feeding device, coiled packaging bags can be continuously cut and fed, the packaging bags do not need to be cut and discharged through an additional device after being machined, the cost of driving force is saved, the continuity of the whole packaging bag feeding process is improved, the feeding time is saved, and therefore the subsequent machining efficiency is improved; and the arranged smoothing assembly is used for smoothing the surfaces of the packaging bags before processing, so that the influence of wrinkles on the quality of processed products is avoided.

Description

Technical Field

[0001] The invention relates to the technical field of packaging bag production, and in particular to a feeding device for packaging bag production. Background Art

[0002] Packaging bags refer to bags used to package various items, which make it easy to transport and store goods during production and circulation, and are widely used in daily life and industrial production. Actual figures show that 80% of used plastic bags are eventually transported to garbage dumps like general garbage, and only 7% of plastics are recycled.

[0003] In the prior art, in the production and processing of packaging bags, for convenience, the produced packaging bags are generally rolled on rollers. However, when the packaging bags are subsequently processed, the common processing method is to cut the rolled packaging bags into single pieces and place them on the operating table for processing. It is necessary to cut the packaging belt before processing and then feed the materials. The operation process is relatively complicated, and the discontinuous feeding process affects the subsequent processing efficiency. How to invent a feeding device for packaging bag production to solve these problems has become an urgent problem to be solved by those skilled in the art. Summary of the invention

[0004] In order to make up for the above shortcomings, the present invention provides a feeding device for packaging bag production, aiming to solve the problem that the operation process of the conventional processing method is relatively complicated and the feeding process is discontinuous, which affects the subsequent processing efficiency.

[0005] The present invention is achieved in that:

[0006] The present invention provides a feeding device for packaging bag production, comprising a machine body and a conveying component, a fixing component, a cutting component and a smoothing component arranged on the machine body, a reeling roller is installed on the inner wall of one end of the machine body, a first pulley is installed on one end of the reeling roller, a guide roller is installed on the inner wall of one side of the machine body close to the reeling roller, a mounting frame is installed on the outer wall of one side of the machine body, a motor is installed on one side of the mounting frame, a working plate is installed on the inner wall of one side of the machine body, and a cutting groove is opened on the outer wall of one side of the working plate;

[0007] The conveying assembly is used to load and convey the packaging bags. The conveying assembly includes two conveying rollers installed on the inner walls at both ends of the machine body. Two symmetrical conveying belts are connected between the two conveying rollers.

[0008] The fixing assembly is installed on the conveyor belt, and the fixing assembly fixes a single packaging bag. The fixing assembly includes a plurality of fixing racks installed on the conveyor belt, and the outer wall of the fixing rack is installed with a fixing block, and the inner wall of the fixing block is installed with a connected suction cup;

[0009] The cutting assembly is installed above the machine body near the cutting groove, and the cutting assembly cuts the continuously rolled packaging bags into single products;

[0010] The smoothing component is installed on the oblique upper inner wall of the unwinding roller close to the machine body, and the smoothing component smoothes the packaging bag before loading.

[0011] Preferably, outer walls at both ends of the unwinding roller and the guide roller are rotatably connected to the inner wall of the machine body, and a first pulley is installed at one end of the unwinding roller.

[0012] Preferably, the outer walls at both ends of the conveying roller are rotatably connected to the inner wall of the machine body, and a second pulley is installed at both ends of one of the conveying rollers. A belt is transmission-connected between the second pulley and the first pulley, and a first gear is installed at one end of the first pulley.

[0013] Preferably, the conveying assembly includes a driving shaft rotatably connected to the inner wall of the machine body, one end of the driving shaft is fixedly connected to the output end of the motor, mounting plates are installed on the side walls at both ends of the driving shaft, the side walls of the mounting plates are installed with a first half-ring tooth meshing with the first gear, and the mounting plate is installed with a second half-ring tooth on the inner side close to the first half-ring tooth.

[0014] The fixing frames on the two conveyor belts are symmetrical to each other. The two fixing frames that are farther apart form a group. The fixing frames in one group fix the two ends of the packaging bag through the suction cups above. The gap between the two fixing frames that are closer provides space for subsequent cutting. The distance between each group of fixing frames and between two fixing frames in the same group is the same.

[0015] Preferably, a connecting auxiliary pipe is installed between the fixed blocks symmetrical to each other of the two conveyor belts, and a connecting hose is installed between the multiple auxiliary pipes. A vacuum pump connected to the suction cup is installed on one of the fixed frames, and the upper outer wall of the suction cup and the upper outer wall of the working plate are in the same plane.

[0016] By adopting the above technical solution, the packaging bags rolled on the unwinding roller are moved toward the working plate through the conveying component for loading. After reaching the designated position, the two ends of the single packaging bag are fixed by the fixing component to facilitate subsequent processing. The packaging bags can be loaded continuously and quickly, thereby improving the efficiency of subsequent processing.

[0017] Preferably, the cutting assembly includes a slide rail, a reciprocating screw, a slider and a blade, the two ends of the slide rail are fixedly connected to the inner wall of the machine body, the two ends of the reciprocating screw are rotatably connected to the inner wall of the machine body, the outer wall of the slider is slidably connected to the inner wall of the slide rail, the inner wall of the slider is threadedly connected to the outer wall of the reciprocating screw, and one end of the blade is fixedly connected to one end of the slider.

[0018] Preferably, a second gear is installed at one end of the reciprocating screw, and the second gear is meshingly connected with the second half ring gear.

[0019] Preferably, when the first half ring teeth and the first gear begin to mesh, the second half ring teeth and the second gear disengage, and when the second half ring teeth and the second gear begin to mesh, the first half ring teeth and the first gear disengage.

[0020] By adopting the above technical solution, after a single packaging bag is processed on the working plate, the end of the packaging bag is cut by the cutting component to separate it from the entire roll of packaging bags. The rear conveying device continues to work to install subsequent packaging bags on the working plate for processing, and the above operations are repeated to further improve the continuity of the loading process and improve the processing efficiency.

[0021] Preferably, the smoothing assembly includes a fixed rod, a scraper, a limiting rod, a spring and a roller shaft, the two ends of the fixed rod are fixedly connected to the inner wall of the machine body, the outer wall of the limiting rod is slidably connected to the inner wall of the fixed rod, the lower end of the limiting rod is fixedly connected to the upper end of the scraper, the side walls at both ends of the spring are respectively fixedly connected to the outer walls of the scraper and the fixed rod, and the inner wall of the end of the scraper is rotatably connected to the outer wall of the roller shaft.

[0022] By adopting the above technical solution, before the packaging bag is conveyed to the working plate, the wrinkles on the outer wall of the packaging bag are smoothed by extrusion of the smoothing component, thereby avoiding uneven surface of the packaging bag in subsequent processing, thereby improving the quality of the processed product.

[0023] The beneficial effects of the present invention are:

[0024] The set conveying component cooperates with the fixing component to quickly load and fix the rolled packaging bags separately, saving the time for loading a single packaging bag, thereby improving the subsequent processing speed. The set conveying component cooperates with the cutting component to achieve intermittent work under the cooperation of two sets of semi-ring teeth and gears, and can continuously cut and load the rolled packaging bags. There is no need to use additional devices to split and unload the packaging bags after processing, which saves the cost of driving force, improves the continuity of the entire packaging bag loading process, saves loading time and thus improves the subsequent processing efficiency. The set smoothing component smoothes the surface of the packaging bag before processing to avoid wrinkles that affect the quality of the processed product. BRIEF DESCRIPTION OF THE DRAWINGS

[0025] In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings required for use in the embodiments will be briefly introduced below. It should be understood that the following drawings only show certain embodiments of the present invention and therefore should not be regarded as limiting the scope. For ordinary technicians in this field, other related drawings can be obtained based on these drawings without paying creative work.

[0026] Figure 1 It is a schematic structural diagram of a feeding device for packaging bag production provided by an embodiment of the present invention;

[0027] Figure 2 It is a partial structural half-section diagram of a feeding device for packaging bag production provided by an embodiment of the present invention;

[0028] Figure 3 The present invention provides a feeding device structure for packaging bag production. Figure 2 A magnified view of the structure of the middle A area;

[0029] Figure 4 It is a schematic side view of the structure of a feeding device for packaging bag production provided by an embodiment of the present invention;

[0030] Figure 5 This is a cross-sectional view of the structure of a feeding device for packaging bag production provided by an embodiment of the present invention;

[0031] Figure 6 The present invention provides a feeding device structure for packaging bag production. Figure 5 A magnified view of the structure of the middle B region;

[0032] Figure 7 It is a partial structural schematic diagram of a feeding device for packaging bag production provided by an embodiment of the present invention;

[0033] Figure 8 This is a partial structure of a feeding device for packaging bag production provided by an embodiment of the present invention. Figure 7 Enlarged view of the structure of the middle C region.

[0034] In the figure: 1. body; 11. unwinding roller; 111. first pulley; 12. guide roller; 13. mounting frame; 14. motor; 15. working plate; 151. cutting groove; 2. conveying assembly; 21. conveying roller; 211. second pulley; 212. first gear; 213. belt; 22. driving shaft; 23. mounting plate; 231. first half ring gear; 232. second half ring gear; 24. conveyor belt; 3. fixing assembly; 31. fixing frame; 32. fixing block; 33. suction cup; 34. vacuum pump; 35. auxiliary pipe; 36. connecting hose; 4. cutting assembly; 41. slide rail; 42. reciprocating screw rod; 43. second gear; 44. slider; 45. blade; 5. smoothing assembly; 51. fixing rod; 52. scraper; 53. limit rod; 54. spring; 55. roller shaft. DETAILED DESCRIPTION

[0035] In order to make the purpose, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0036] Example, see Figure 1-Figure 8 A feeding device for producing packaging bags comprises a machine body 1 and a conveying assembly 2, a fixing assembly 3, a cutting assembly 4 and a smoothing assembly 5 arranged on the machine body 1, a reeling roller 11 is installed on the inner wall at one end of the machine body 1, a first pulley 111 is installed on one end of the reeling roller 11, a guide roller 12 is installed on the inner wall of one side of the machine body 1 close to the reeling roller 11, a mounting frame 13 is installed on one side of the outer wall of the machine body 1, a motor 14 is installed on one side of the mounting frame 13, a working plate 15 is installed on the inner wall of one side of the machine body 1, and a cutting groove 151 is opened on one side of the outer wall of the working plate 15;

[0037] The conveying assembly 2 is used to load and convey the packaging bags. The conveying assembly 2 includes two conveying rollers 21 installed on the inner walls of both ends of the machine body 1. Two symmetrical conveying belts 24 are connected between the two conveying rollers 21.

[0038] The fixing assembly 3 is installed on the conveyor belt 24. The fixing assembly 3 fixes a single packaging bag. The fixing assembly 3 includes a plurality of fixing frames 31 installed on the conveyor belt 24. The outer wall of the fixing frame 31 is installed with a fixing block 32. The inner wall of the fixing block 32 is installed with a connected suction cup 33.

[0039] The cutting assembly 4 is installed above the machine body 1 near the cutting groove 151, and the cutting assembly 4 cuts the continuously rolled packaging bags into single products;

[0040] The smoothing component 5 is installed on the oblique upper inner wall of the unwinding roller 11 close to the machine body 1, and the smoothing component 5 smoothes the packaging bag before loading.

[0041] Furthermore, the outer walls at both ends of the unwinding roller 11 and the guide roller 12 are rotatably connected to the inner wall of the body 1, one end of the unwinding roller 11 is installed with a first pulley 111, and the outer walls at both ends of the conveying roller 21 are rotatably connected to the inner wall of the body 1, and a second pulley 211 is installed at both ends of one of the conveying rollers 21, and a belt 213 is transmission-connected between the second pulley 211 and the first pulley 111, and a first gear 212 is installed at one end of the first pulley 111, and the conveying assembly 2 includes a driving shaft 22 rotatably connected to the inner wall of the body 1, one end of the driving shaft 22 is fixedly connected to the output end of the motor 14, and mounting plates 23 are installed on the side walls of both ends of the driving shaft 22, and the side walls of the mounting plate 23 are installed with a first semi-ring tooth 231 meshing with the first gear 212, and the mounting plate 23 is installed. A second semi-ring tooth 232 is installed on the inner side of the disk 23 near the first semi-ring tooth 231. The fixing frames 31 on the two conveyor belts 24 are symmetrical to each other. Two fixing frames 31 that are farther apart form a group. One group of fixing frames 31 fixes the two ends of the packaging bag through the suction cup 33 above. The gap between the two fixing frames 31 that are closer provides space for subsequent cutting. The distance between each group of fixing frames 31 and between the two fixing frames 31 in the same group is the same. A connected auxiliary pipe 35 is installed between the mutually symmetrical fixing blocks 32 of the two conveyor belts 24. A connected connecting hose 36 is installed between the multiple auxiliary pipes 35. A vacuum pump 34 connected to the suction cup 33 is installed on one of the fixing frames 31. The upper outer wall of the suction cup 33 and the upper outer wall of the working plate 15 are in the same plane.

[0042] It should be noted that: when the packaging bag is loaded and processed, the rolled packaging bag is put on the unwinding roller 11 as a whole, the motor 14 is started to rotate the drive shaft 22, and the unwinding roller 11 rotates simultaneously with the cooperation of the pulley and the belt 213 to release the packaging bag. At this time, one end of the packaging bag is adsorbed by the fixing component 3, and the rear end of the packaging bag is moved to the fixing component 3 under the packaging bag for adsorption and fixation during the working process of the conveying component 2, thereby completing the fixation of a single packaging bag. At the same time, the front end of the subsequent packaging bag is adsorbed and fixed by the fixing component 3. At this time, the fixed single packaging bag can be processed by the processing component. The set conveying component 2 cooperates with the fixing component 3 to quickly load and fix the rolled packaging bags separately, saving the time for loading a packaging bag at a time, thereby improving the subsequent processing speed.

[0043] Furthermore; the cutting assembly 4 includes a slide rail 41, a reciprocating screw rod 42, a slider 44 and a blade 45, both ends of the slide rail 41 are fixedly connected to the inner wall of the body 1, both ends of the reciprocating screw rod 42 are rotatably connected to the inner wall of the body 1, the outer wall of the slider 44 is slidably connected to the inner wall of the slide rail 41, the inner wall of the slider 44 is threadedly connected to the outer wall of the reciprocating screw rod 42, one end of the blade 45 is fixedly connected to one end of the slider 44, and a second gear 43 is installed at one end of the reciprocating screw rod 42, the second gear 43 is meshed with the second half ring gear 232, when the first half ring gear 231 and the first gear 212 start to mesh, the second half ring gear 232 and the second gear 43 are disengaged, when the second half ring gear 232 and the second gear 43 start to mesh, the first half ring gear 231 and the first gear 212 are disengaged.

[0044] It should be noted that: after the fixing component 3 completes the fixing of a single packaging bag, the driving shaft 22 continues to rotate and the first half-ring tooth 231 and the first gear 212 are disengaged, causing the conveying component 2 to stop working, and the packaging bag remains fixed. The driving shaft 22 still rotates and causes the second half-ring tooth 232 and the second gear 43 to start to mesh and drive the reciprocating screw rod 42 to rotate, thereby driving the slider 44 to drive the blade 45 below to move along the cutting groove 151 to the other side of the machine body 1 to cut and separate the packaging bag, so that the single packaging bag is installed on the working plate 15 through the fixing component 3, and the single packaging bag is processed during the cutting process, and is kept after the cutting is completed. After the processing is completed, the vacuum pump 34 is stopped and the packaging bag is removed. The driving shaft 22 then continues to rotate to disengage the second gear 43 and the second half-ring tooth 232 while the first gear 212 and the first half-ring tooth 231 begin to engage, so that the conveying component 2 starts working and the cutting component 4 stops working, thereby realizing intermittent operation of the conveying component 2 and the cutting component 4. The conveying component 2 can continuously cut and load the rolled packaging bags, and there is no need to cut and load the packaging bags through additional devices after processing, which saves the cost of driving force, improves the continuity of the entire packaging bag loading process, saves loading time, and thus improves subsequent processing efficiency.

[0045] Furthermore, the smoothing assembly 5 includes a fixed rod 51, a scraper 52, a limiting rod 53, a spring 54 and a roller 55. The two ends of the fixed rod 51 are fixedly connected to the inner wall of the body 1, the outer wall of the limiting rod 53 is slidably connected to the inner wall of the fixed rod 51, the lower end of the limiting rod 53 is fixedly connected to the upper end of the scraper 52, the side walls of the spring 54 at both ends are fixedly connected to the outer walls of the scraper 52 and the fixed rod 51 respectively, and the inner wall of the end of the scraper 52 is rotatably connected to the outer wall of the roller 55.

[0046] It should be noted that: before loading, the packaging bag is smoothed by the rotatable roller 55 at the lower end of the smoothing component 5, and the roller 55 is used to achieve a rolling connection with the surface of the packaging bag. During the smoothing process, the friction is reduced to avoid excessive pressure on the packaging bag and cause it to rupture. At the same time, the spring 54 arranged above the scraper 52 adaptively adjusts the pressure applied to the packaging bag, so as to maintain appropriate tension of the entire packaging bag, avoid the influence of too small tension on transportation, and avoid excessive tension causing rupture, so as to improve the safety of the packaging bag during the entire transportation process, avoid damage to the packaging bag, and thus improve the quality of the product after subsequent processing.

[0047] The working principle of the feeding device for packaging bag production:

[0048] When the packaging bag is being loaded and processed, the rolled packaging bag is entirely sleeved on the unwinding roller 11, and the motor 14 is started to rotate the driving shaft 22. The unwinding roller 11 rotates simultaneously with the cooperation of the pulley and the belt 213 to release the packaging bag. Before fixing the packaging bag, the packaging bag is smoothed and wrinkles are eliminated by the smoothing component 5. At the same time, one end of the packaging bag is adsorbed by the fixing component 3, so that during the working process of the conveying component 2, the rear end of the packaging bag is moved to the fixing component 3 under the packaging bag for adsorption and fixation, thereby completing the fixation of a single packaging bag. At the same time, the front end of the subsequent packaging bag is adsorbed and fixed by the fixing component 3. After the rear driving shaft 22 continues to rotate, the first semi-ring tooth 231 and the first gear 212 are disengaged, causing the conveying component 2 to stop working, and the packaging bag remains fixed. The driving shaft 22 still rotates and causes the second semi-ring tooth 232 and the second gear 43 to start meshing to drive the reciprocating screw rod 42 to rotate, thereby driving the sliding The block 44 drives the blade 45 below to move along the cutting groove 151 to the other side of the machine body 1 to cut and separate the packaging bag, so that a single packaging bag is installed on the working plate 15 through the fixing component 3. The single packaging bag is processed during the cutting process, and the processing ends at the same time after the cutting is completed. Then, the vacuum pump 34 is stopped to remove the packaging bag, and the driving shaft 22 continues to rotate to disengage the second gear 43 and the second half-ring tooth 232, while the first gear 212 and the first half-ring tooth 231 begin to engage, so that the conveying component 2 starts working and the cutting component 4 stops working at the same time, thereby realizing the intermittent operation of the conveying component 2 and the cutting component 4. The conveying component 2 can cooperate with the continuous cutting and feeding of the rolled packaging bags, and there is no need to cut and feed the packaging bags through additional devices after processing, which saves the cost of driving force, improves the continuity of the entire packaging bag feeding process, saves the feeding time, and improves the subsequent processing efficiency.

[0049] It should be noted that the specific model and specifications of the motor need to be selected and determined based on the actual specifications of the device, and the specific selection calculation method adopts the existing technology in this field, so it will not be described in detail.

[0050] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. For those skilled in the art, the present invention may have various modifications and variations. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present invention shall be included in the protection scope of the present invention.

Claims

1. A feeding device for producing packaging bags, comprising a machine body (1) and a conveying component (2), a fixing component (3), a cutting component (4) and a smoothing component (5) arranged on the machine body (1), characterized in that: A reeling roller (11) is installed on the inner wall at one end of the machine body (1), a first pulley (111) is installed on one end of the reeling roller (11), a guide roller (12) is installed on the inner wall of one side of the machine body (1) close to the reeling roller (11), a mounting frame (13) is installed on the outer wall of one side of the machine body (1), a motor (14) is installed on one side of the mounting frame (13), a working plate (15) is installed on the inner wall of one side of the machine body (1), and a cutting groove (151) is provided on the outer wall of one side of the working plate (15); The conveying assembly (2) is used to load and convey the packaging bags. The conveying assembly (2) comprises two conveying rollers (21) mounted on the inner walls at both ends of the machine body (1). Two symmetrical conveying belts (24) are connected to each other in a transmission manner. The fixing assembly (3) is installed on the conveyor belt (24), and the fixing assembly (3) fixes a single packaging bag. The fixing assembly (3) comprises a plurality of fixing frames (31) installed on the conveyor belt (24), and the outer wall of the fixing frame (31) is installed with a fixing block (32), and the inner wall of the fixing block (32) is installed with a connected suction cup (33); The cutting assembly (4) is installed above the machine body (1) near the cutting groove (151), and the cutting assembly (4) cuts the continuously rolled packaging bags into individual items; The smoothing component (5) is installed on the upper oblique inner wall of the unwinding roller (11) close to the machine body (1), and the smoothing component (5) smoothes the packaging bag before loading.

2. A feeding device for packaging bag production according to claim 1, characterized in that: The outer walls at both ends of the unwinding roller (11) and the guide roller (12) are rotatably connected to the inner wall of the machine body (1), and a first pulley (111) is installed at one end of the unwinding roller (11).

3. A feeding device for packaging bag production according to claim 2, characterized in that: The outer walls at both ends of the conveying roller (21) are rotatably connected to the inner wall of the machine body (1), and a second pulley (211) is installed at both ends of one of the conveying rollers (21), a belt (213) is transmission-connected between the second pulley (211) and the first pulley (111), and a first gear (212) is installed at one end of the first pulley (111).

4. A feeding device for packaging bag production according to claim 3, characterized in that: The conveying assembly (2) comprises a driving shaft (22) rotatably connected to the inner wall of the machine body (1), one end of the driving shaft (22) being fixedly connected to the output end of the motor (14), mounting plates (23) being installed on the side walls at both ends of the driving shaft (22), a first semi-ring tooth (231) meshingly connected to the first gear (212) being installed on the side wall of the mounting plate (23), and a second semi-ring tooth (232) being installed on the inner side of the mounting plate (23) close to the first semi-ring tooth (231).

5. The feeding device for packaging bag production according to claim 1, characterized in that: The fixing frames (31) on the two conveyor belts (24) are symmetrical to each other. The two fixing frames (31) that are farther apart form a group. One group of fixing frames (31) fixes the two ends of the packaging bag via suction cups (33) above. The gap between the two fixing frames (31) that are closer together provides space for subsequent cutting. The distances between each group of fixing frames (31) and between two fixing frames (31) in the same group are the same.

6. A feeding device for packaging bag production according to claim 5, characterized in that: A communicating auxiliary pipe (35) is installed between the mutually symmetrical fixed blocks (32) of the two conveyor belts (24), and a communicating connecting hose (36) is installed between the plurality of the auxiliary pipes (35). A vacuum pump (34) communicating with the suction cup (33) is installed on one of the fixing frames (31), and the upper outer wall of the suction cup (33) and the upper outer wall of the working plate (15) are in the same plane.

7. A feeding device for packaging bag production according to claim 4, characterized in that: The cutting assembly (4) comprises a slide rail (41), a reciprocating screw rod (42), a slider (44) and a blade (45); both ends of the slide rail (41) are fixedly connected to the inner wall of the machine body (1); both ends of the reciprocating screw rod (42) are rotatably connected to the inner wall of the machine body (1); the outer wall of the slider (44) is slidably connected to the inner wall of the slide rail (41); the inner wall of the slider (44) is threadedly connected to the outer wall of the reciprocating screw rod (42); and one end of the blade (45) is fixedly connected to one end of the slider (44).

8. A feeding device for packaging bag production according to claim 7, characterized in that: A second gear (43) is installed at one end of the reciprocating screw rod (42), and the second gear (43) is meshedly connected with the second semi-ring gear (232).

9. A feeding device for packaging bag production according to claim 8, characterized in that: When the first half ring teeth (231) and the first gear (212) begin to mesh, the second half ring teeth (232) and the second gear (43) are disengaged; when the second half ring teeth (232) and the second gear (43) begin to mesh, the first half ring teeth (231) and the first gear (212) are disengaged.

10. A feeding device for packaging bag production according to claim 1, characterized in that: The smoothing component (5) comprises a fixed rod (51), a scraper (52), a limiting rod (53), a spring (54) and a roller (55), wherein the two ends of the fixed rod (51) are fixedly connected to the inner wall of the machine body (1), the outer wall of the limiting rod (53) is slidably connected to the inner wall of the fixed rod (51), the lower end of the limiting rod (53) is fixedly connected to the upper end of the scraper (52), the side walls at both ends of the spring (54) are respectively fixedly connected to the outer walls of the scraper (52) and the fixed rod (51), and the inner wall of the end of the scraper (52) is rotatably connected to the outer wall of the roller (55).

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