Feeding device of bag making machine

Abstract

The utility model discloses a discharging device of a bag making machine, which comprises a rack, a fixed roller group, a floating roller group, a front film guide component and a film frame arm, and further comprises an acting cylinder support and a first acting cylinder, the floating roller group is arranged at the bottom of the inner side of the rack through a vertical guide mechanism and is correspondingly arranged below the fixed roller group; the fixed roller set and the floating roller set each comprise a plurality of parallel roller shafts which are arranged in a staggered mode. The acting cylinder support horizontally stretches across and is erected on large plates on the two sides of the machine frame, the first acting cylinder is vertically installed on the acting cylinder support with the head facing downwards, and the end of a piston rod of the first acting cylinder is connected with the floating roller set and drives the floating roller set to horizontally move up and down. According to the discharging device of the bag making machine, the lower roller set is arranged to be the floating roller set horizontally moving up and down, meanwhile, the acting cylinder is driven to be arranged upwards, the floating stroke is greatly increased, the capacity of a buffering workshop section is enlarged, and the operation efficiency of the bag making machine is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of bag making machines, in particular to a material discharging device for bag making machines. Background Art

[0002] Bag making machine is a machine equipment for making various plastic packaging bags. In the process of plastic bag processing, the unloading end of the bag making machine often uses a whole roll of plastic film for feeding, unwinding, sealing, cutting, stacking, and finally outputting stacks of plastic bags. In order to ensure the continuity of the bag making station and avoid stopping when changing the film roll, the existing bag making machine often has a plastic film buffer section at the unloading end, which can buffer the plastic film material and ensure the continuous and stable operation of the bag making machine.

[0003] For example, the utility model patents with announcement numbers CN202344893U and CN218778463U both disclose relevant content about the material discharge buffer of the bag making machine. The plastic film material strip is interspersed back and forth between the upper roller group and the lower roller group to form a buffer section. The lower roller group is installed by connecting a pin at one end to a swingable bracket at the other end, and the floating of the lower roller is achieved by swinging. However, the buffer section of this swinging method often has a small buffer distance, that is, the length of the cached plastic film material strip is small. At this stage, the high-speed bag making machine has a high bag making efficiency, that is, the material consumption speed is fast. If the film material roll cannot be quickly replaced, it may still cause the bag making machine to stop, reducing the operating efficiency.

[0004] Therefore, it is necessary to develop a bag making machine discharging device for the above-mentioned defects. Utility Model Content

[0005] The utility model aims to provide a bag making machine unloading device, wherein the lower roller group is arranged as a floating roller group which moves up and down and drives the action cylinder upward at the same time, thereby greatly increasing the floating stroke, expanding the capacity of the buffer section and improving the operating efficiency of the bag making machine.

[0006] In order to solve the above technical problems, the utility model adopts the following technical solutions:

[0007] The utility model discloses a material discharge device for a bag making machine, comprising a frame, a fixed roller group, a floating roller group, a leading film assembly and a film frame arm, and also comprising an action cylinder bracket and a first action cylinder, wherein both ends of the fixed roller group are supported on the top of the frame, and the floating roller group is arranged at the inner bottom of the frame and corresponds to the lower part of the fixed roller group through a vertical guide mechanism; the fixed roller group and the floating roller group both comprise a plurality of roller shafts arranged in parallel and staggered; the action cylinder bracket is horizontally spanned and erected on large plates on both sides of the frame, and the first action cylinder head is vertically installed on the action cylinder bracket downward, and the end of its piston rod is connected to and drives the floating roller group to translate up and down.

[0008] Furthermore, the vertical guiding mechanism includes a guide rail and a slider. The guide rail is specifically a linear guide rail, and the guide rail is vertically fixedly connected to the inward side wall of the large plate of the frame; the slider is specifically a ball slider, and the slider is guided and slid on the guide rail and is fixedly connected to the middle position at both ends of the floating roller group.

[0009] Furthermore, the floating roller group also includes supporting side plates, a top frame, a floating roller, a bottom cross beam and a side beam. The two supporting side plates are arranged face to face and are connected into an integrated structure through the bottom cross beam and the two side beams. A plurality of raised heads are arranged on the top of the supporting side plates, and both ends of the floating rollers are mounted on the paired raised heads, and the plastic film strips led out from the film roll bypass the floating rollers. The top frame is connected to the middle position of the top of the supporting side plates by bolts, and the piston rod of the first acting cylinder is connected to the middle position of the top frame; the slider is fixedly connected to the middle position of the outer side wall of the supporting side plates.

[0010] Furthermore, the root of the film frame arm is connected to the large plate feeding end of the frame through a rotating shaft, a retractable supporting structure is arranged at the cantilever end of the film frame arm, and a film material roll for unloading is arranged at the cantilever end of the film frame arm.

[0011] Furthermore, the retractable supporting structure includes a second acting cylinder and a pin shaft seat, the second acting cylinder head is arranged downward and the head is installed on the membrane frame arm through a pin shaft, the second acting cylinder is connected to the pin shaft seat toward the protruding piston rod end, and the pin shaft seat base is fixedly connected to the bottom edge of the frame.

[0012] Furthermore, it also includes a heat sealing mechanism, which is in the form of a hand-pressure sealing machine. The heat sealing mechanism is erected on the top of the frame and is arranged on the plastic film strip between the leading film assembly and the floating roller group.

[0013] Furthermore, the frame includes three large plates arranged in parallel and at intervals, and a set of the fixed roller group, the floating roller group, the cylinder bracket and the first cylinder are respectively arranged in two interval spaces, so that double-line unloading can be carried out.

[0014] Compared with the prior art, the beneficial technical effects of the utility model are:

[0015] The utility model discloses a bag-making machine unloading device. By adopting the method of placing the first acting cylinder for driving the floating roller group upward, the installation space of the acting cylinder is required in the height direction, so that a larger linear driving stroke can be achieved, thereby increasing the buffer length of the plastic film material strip. The floating roller group that adopts linear translation relative to the yaw method can achieve the same buffering effect for all rollers, and the buffering effect is good. The utility model bag-making machine unloading device, the lower roller group is set as a floating roller group that translates up and down and drives the acting cylinder upward at the same time, which greatly increases the floating stroke, expands the capacity of the buffer section, and improves the operating efficiency of the bag-making machine.

[0016] In addition, the floating roller group is vertically guided by the linear guide rail, which has good stability, and the friction resistance of the slider using the ball slider is small and the noise is low. The frame structure formed by welding the supporting side plates, bottom cross beams and side beams has high support strength and rigidity, ensuring the stable operation of multiple floating rollers; by adding distance measuring components and clamping blocks, the height position of the floating roller group can be monitored. The film frame arm connected by the rotating shaft can swing, thereby increasing the height from the ground, which is convenient for unloading film rolls with larger diameters; through the setting of the second acting cylinder and the pin shaft seat, the second acting cylinder is placed on top, which can achieve a larger swing range of the film frame arm, which is convenient for the upper and lower film roll operations, and can achieve better adaptation to the diameter of the film roll. By setting an online heat sealing mechanism, a quick joint can be achieved when replacing the film roll, avoiding the trouble of finding heat sealing equipment on site. The use of a double-line operation mode can further improve the efficiency of bag making. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] The utility model will be further described below in conjunction with the accompanying drawings.

[0018] Figure 1 This is a schematic diagram of the main structure of the discharge device of the bag making machine of the utility model;

[0019] Figure 2 It is a left side structural schematic diagram of the discharge device of the bag making machine of the utility model;

[0020] Figure 3 It is a schematic diagram of the top view of the discharge device of the bag making machine of the utility model;

[0021] Figure 4 for Figure 2 Schematic diagram of the cross-sectional structure of the middle AA part;

[0022] Figure 5 This is a schematic diagram of the rear view structure of the bag making machine discharge device of the utility model after removing the rear large plate of the frame;

[0023] Figure 6 This is a schematic diagram of the main structure of the floating roller group of the utility model;

[0024] Figure 7 It is a schematic diagram of the three-dimensional structure of the floating roller group of the utility model.

[0025] Explanation of the reference numerals: 1. Frame; 101. Guide rail; 102. Electric control box; 2. Fixed roller group; 3. Floating roller group; 301. Support side plate; 302. Top frame; 303. Floating roller; 304. Bottom cross beam; 305. Side beam; 306. Slider; 307. Clamping block; 4. Cylinder bracket; 5. First cylinder; 6. Heat sealing mechanism; 7. Leading film assembly; 8. Film frame arm; 9. Second cylinder; 10. Rotating shaft; 11. Pin seat; 12. Distance measuring assembly; 13. Film roll. DETAILED DESCRIPTION

[0026] The core of the utility model is to provide a bag making machine unloading device. The lower roller group is arranged as a floating roller group which moves up and down and drives the working cylinder upward at the same time, which greatly increases the floating stroke, expands the capacity of the buffer section, and improves the operating efficiency of the bag making machine.

[0027] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0028] In the description of the present invention, it should be understood that the terms "upper", "lower", "front", "back", "left", "right", "top", "bottom", "inside", "outside", etc., indicating directions or positional relationships, are based on the directions or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific direction, be constructed and operated in a specific direction, and therefore should not be understood as a limitation on the present invention.

[0029] With reference to the accompanying drawings, Figure 1 This is a schematic diagram of the main structure of the discharge device of the bag making machine of the utility model; Figure 2 It is a left side structural schematic diagram of the discharge device of the bag making machine of the utility model; Figure 3 It is a schematic diagram of the top view of the discharge device of the bag making machine of the utility model; Figure 4 for Figure 2 Schematic diagram of the cross-sectional structure of the middle AA part; Figure 5 This is a schematic diagram of the rear view structure of the bag making machine discharge device of the utility model after removing the rear large plate of the frame; Figure 6 This is a schematic diagram of the main structure of the floating roller group of the utility model; Figure 7 It is a schematic diagram of the three-dimensional structure of the floating roller group of the utility model.

[0030] In a specific embodiment, Figures 1 to 7 As shown, a bag making machine unloading device includes a frame 1, a fixed roller group 2, a floating roller group 3, a leading film assembly 7 and a film frame arm 8. The leading film assembly 7 is arranged at the top of the feeding end of the frame 1, and the roots of the two film frame arms 8 are fixedly connected to the lower part of the feeding end of the frame 1. The film material roll 13 is rotatably mounted on the cantilever end of the film frame arm 8. The plastic film material strip guided out by the film material roll 13 passes through the leading film assembly 7 and is transferred backward to the plastic film material strip buffer section composed of the fixed roller group 2 and the floating roller group 3. The important difference of the utility model with respect to the plastic film material strip unloading device in the prior art is that it also includes an action cylinder bracket 4 and a first action cylinder 5. The two ends of the fixed roller group 2 are supported on the top of the frame 1, and the floating roller group 3 is arranged at the bottom of the inner side of the frame 1 and corresponds to the bottom of the fixed roller group 2 through a vertical guide mechanism. Both the fixed roller group 2 and the floating roller group 3 include a plurality of rollers arranged in parallel, and the rollers of the fixed roller group 2 and the floating roller group 3 are arranged in a staggered manner, and the plastic film strip is reciprocated and interlaced and wound on the rollers of the fixed roller group 2 and the floating roller group 3. The cylinder bracket 4 is horizontally spanned and erected on the large plates on both sides of the frame 1, and the first cylinder 5 is vertically installed on the cylinder bracket 4 with its head facing downward, and the end of its piston rod is connected to the floating roller group 3, and drives the floating roller group 3 to move up and down.

[0031] The height of a bag-making machine is generally no more than two meters, while the height of a standard factory building is generally no less than five meters. By placing the first acting cylinder 5 for driving the floating roller group 3 upward, the installation space of the acting cylinder is required in the height direction, which can achieve a larger linear drive stroke, thereby increasing the buffer length of the plastic film material strip. The floating roller group 3 that uses linear translation relative to the yaw method can achieve the same buffering effect for all rollers, and the buffering effect is good. In the present utility model, the discharge device of the bag-making machine, the lower roller group is set as a floating roller group that translates up and down, and the driving cylinder is placed upward at the same time, which greatly increases the floating stroke, expands the capacity of the buffer section, and improves the operating efficiency of the bag-making machine.

[0032] In a specific embodiment of the present invention, Figures 4 to 7 As shown, the vertical guide mechanism includes a guide rail 101 and a slider 306. The guide rail 101 is specifically a linear guide rail, and the guide rail 101 is vertically fixedly connected to the inner side wall of the large plate of the frame 1. The length of the linear guide rail is set along the height of the large plate of the frame 1. The slider 306 is specifically a ball slider, and the slider 306 is guided and slid on the guide rail 101 and is fixedly connected to the middle position of the two ends of the floating roller group 3.

[0033] The floating roller group 3 is vertically guided by the linear guide rail, which has good stability, and the slider 306 using a ball slider has small friction resistance and low noise.

[0034] In a specific embodiment of the present invention, Figure 6 and Figure 7 As shown, the floating roller group 3 also includes a supporting side plate 301, a top frame 302, a floating roller 303, a bottom cross beam 304 and a side beam 305. The two supporting side plates 301 are arranged face to face and connected into an integral structure through the middle bottom cross beam 304 and two side beams 305. Both ends of the bottom cross beam 304 and the side beam 305 are vertically welded to the inner side wall of the supporting side plate 301. A plurality of protrusions are arranged on the top of the supporting side plate 301, and the protrusions are arranged upward, and the two ends of the floating roller 303 are mounted on the top of the paired protrusions. The plastic film strip led out of the film roll 13 bypasses the floating roller 303. The top frame 302 is connected to the middle position of the top of the supporting side plate 301 by bolts, and the piston rod of the first acting cylinder 5 is connected to the middle position of the top frame 302. The slider 306 is fixedly connected to the middle position of the outer side wall of the supporting side plate 301.

[0035] Specifically, if Figure 6 and Figure 7 As shown, it also includes a distance measuring component 12, which is installed on the large plate of the frame 1. The distance measuring component 12 includes a synchronous pulley, a synchronous belt and an encoder. The two synchronous pulleys are respectively arranged at the bottom edge and the top edge of the large plate of the frame 1, and the synchronous belt transmission is connected between the two synchronous pulleys. The synchronous pulley at the top edge coaxially drives the encoder, and the encoder feeds back a signal to the electronic control system of the equipment. A clamping block 307 is arranged on the outer wall of a supporting side plate 301, and the clamping block 307 is clamped on a point of the synchronous belt, that is, during the up and down translation of the floating roller group 3, the clamping block 307 drives the synchronous belt, the synchronous belt drives the synchronous pulley, and the synchronous pulley drives the encoder, and the encoder feeds back a signal to the electronic control system.

[0036] The frame structure formed by welding the supporting side plates 301, the bottom cross beam 304 and the side beam 305 has high supporting strength and rigidity, ensuring the stable operation of multiple floating rollers 303; by adding a distance measuring component 12 and a clamping block 307, the height position of the floating roller group 3 can be monitored.

[0037] In a specific embodiment of the present invention, Figures 1 to 5 As shown, the root of the film frame arm 8 is connected to the large plate feeding end of the frame 1 through the rotating shaft 10, and a retractable support structure is provided at the cantilever end of the film frame arm 8, and a film material roll 13 for unwinding is set at the cantilever end of the film frame arm 8. A cantilever end of a film frame arm 8 is also provided with a rotary drive device for unwinding the film material roll 13, and the rotary drive device generally adopts a servo motor to drive a synchronous pulley.

[0038] Specifically, if Figures 1 to 5As shown, the retractable supporting structure includes a second acting cylinder 9 and a pin shaft seat 11. The second acting cylinder 9 is arranged head downward and the head is installed on the membrane frame arm 8 through a pin shaft. The second acting cylinder 9 is connected to the pin shaft seat 11 toward the protruding piston rod end, and the base of the pin shaft seat 11 is fixedly connected to the bottom edge of the frame 1.

[0039] Specifically, the first working cylinder 5 and the second working cylinder 9 can be hydraulic cylinders or electric push rods.

[0040] The film frame arm 8 connected by the rotating shaft 10 can swing, thereby increasing the height from the ground, which is convenient for unloading the film roll 13 with a larger diameter; through the arrangement of the second acting cylinder 9 and the pin shaft seat 11, the upper placement of the second acting cylinder 9 can achieve a larger swing range of the film frame arm 8, which is convenient for the upper and lower film roll 13 operations, and can better adapt to the diameter of the film roll 13.

[0041] In a specific embodiment of the present invention, Figure 1 , Figure 3 and Figure 5 As shown, the bag making machine discharge device of the utility model also includes a heat sealing mechanism 6, which is a hand-pressure sealing machine. The heat sealing mechanism 6 is mounted on the top of the frame 1 and is arranged on the plastic film material belt between the leading film assembly 7 and the floating roller group 3.

[0042] By providing the online heat-sealing mechanism 6, a quick connection can be achieved when replacing the film roll 13, thus avoiding the trouble of searching for heat-sealing equipment on site.

[0043] In a specific embodiment of the utility model, the frame 1 includes three large plates arranged in parallel and spaced apart, and a set of fixed roller group 2, floating roller group 3, cylinder support 4 and first cylinder 5 are respectively arranged in two spaced apart spaces, so that double-line unloading can be performed. The double-line operation mode can further improve the bag making efficiency.

[0044] The working principle of the unloading device of the bag making machine of the utility model is as follows: when replacing the film roll 13, the second acting cylinder 9 contracts, puts down the film frame arm 8, replaces the core tube of the floating roller group 3, replaces the new film roll 13, and the second acting cylinder 9 pushes out to lift the new film roll 13 off the ground. At the same time, the first acting cylinder 5 pulls the floating roller group 3 upward, the distance between the floating roller group 3 and the fixed roller group 2 is reduced, and the buffered plastic film strip is continuously transported to the subsequent heat sealing, cutting, stacking and other stations. The plastic film strip derived from the new film roll 13 and the material head of the upper section are connected at the heat sealing mechanism 6, and the handle of the heat sealing mechanism 6 is manually pressed to connect. After the connection is completed, the connection completion button is pressed, and the equipment enters the automatic unloading state. The rotary drive device drives the film roll 13 to start rotating and unwinding, and the first acting cylinder 5 starts to reset downward, increasing the length of the buffered plastic film strip, and the equipment re-enters the automatic operation state.

[0045] In summary, by adopting the method of placing the first cylinder 5 for driving the floating roller group 3 upward, the installation space of the cylinder is required in the height direction, and a larger linear driving stroke can be achieved, thereby increasing the buffer length of the plastic film material strip. Compared with the yaw method, all rollers of the floating roller group 3 using linear translation can achieve the same buffering effect, and the buffering effect is good. In the discharge device of the bag making machine of the utility model, the lower roller group is set as a floating roller group that translates up and down and drives the cylinder upward at the same time, which greatly increases the floating stroke, expands the capacity of the buffer section, and improves the operating efficiency of the bag making machine. In addition, the floating roller group 3 is vertically guided by the linear guide rail, and the stability is good. The slider 306 using the ball slider has a small friction resistance and low noise. The frame structure formed by welding the supporting side plate 301, the bottom cross beam 304 and the side beam 305 has a high support strength and rigidity, ensuring the stable operation of multiple floating rollers 303; by adding the distance measuring component 12 and the clamping block 307, the height position of the floating roller group 3 can be monitored. The film frame arm 8 connected by the rotating shaft 10 can swing, thereby increasing the height from the ground, which is convenient for unloading the film roll 13 with a larger diameter; through the arrangement of the second acting cylinder 9 and the pin shaft seat 11, the second acting cylinder 9 is placed on top, which can achieve a larger swing range of the film frame arm 8, which is convenient for the operation of the upper and lower film rolls 13, and can better adapt to the diameter of the film roll 13. By setting up an online heat sealing mechanism 6, a quick joint can be achieved when replacing the film roll 13, avoiding the trouble of finding a heat sealing device on site. The use of a double-line operation mode can further improve the efficiency of bag making.

[0046] In this specification, each embodiment is described in a progressive manner, and each embodiment focuses on the differences from other embodiments. The same or similar parts between the embodiments can be referred to each other. For the device disclosed in the embodiment, since it corresponds to the method disclosed in the embodiment, the description is relatively simple, and the relevant parts can be referred to the method part.

[0047] The embodiments described above are only descriptions of the preferred methods of the present invention, and are not intended to limit the scope of the present invention. Without departing from the design spirit of the present invention, various modifications and improvements made to the technical solutions of the present invention by ordinary technicians in this field should fall within the protection scope determined by the claims of the present invention.

Claims

1. A bag-making machine unloading device, comprising a frame (1), a fixed roller group (2), a floating roller group (3), a leading film assembly (7) and a film frame arm (8), characterized in that: It also includes an action cylinder bracket (4) and a first action cylinder (5); the two ends of the fixed roller group (2) are supported on the top of the frame (1); the floating roller group (3) is arranged at the bottom of the inner side of the frame (1) and corresponds to the bottom of the fixed roller group (2) through a vertical guide mechanism; the fixed roller group (2) and the floating roller group (3) both include a plurality of roller shafts arranged in parallel and staggered; the action cylinder bracket (4) is horizontally spanned on the large plates on both sides of the frame (1); the first action cylinder (5) is vertically installed on the action cylinder bracket (4) with its head facing downward and its piston rod end is connected to and drives the floating roller group (3) to move up and down.

2. The bag making machine unloading device according to claim 1, characterized in that: The vertical guide mechanism comprises a guide rail (101) and a slider (306); the guide rail (101) is specifically a linear guide rail, and the guide rail (101) is vertically fixedly connected to the inner side wall of the large plate of the frame (1); the slider (306) is specifically a ball slider, and the slider (306) is guided and slid on the guide rail (101) and is fixedly connected to the middle position of the two ends of the floating roller group (3).

3. The unloading device for bag making machine according to claim 2, characterized in that: The floating roller group (3) also includes a supporting side plate (301), a top frame (302), a floating roller (303), a bottom cross beam (304) and a side beam (305); the two supporting side plates (301) are arranged face to face and connected into an integral structure through the bottom cross beam (304) and the two side beams (305); a plurality of protrusions are arranged on the top of the supporting side plate (301), and the two ends of the floating roller (303) are mounted on the paired protrusions, and the plastic film strip led out of the film roll (13) bypasses the floating roller (303); the top frame (302) is connected to the middle position of the top of the supporting side plate (301) by bolts, and the piston rod of the first acting cylinder (5) is connected to the middle position of the top frame (302); the sliding block (306) is fixedly connected to the middle position of the outer wall of the supporting side plate (301).

4. The unloading device for bag making machine according to claim 1, characterized in that: The root of the film frame arm (8) is connected to the large plate feeding end of the frame (1) via a rotating shaft (10); a retractable supporting structure is provided at the cantilever end of the film frame arm (8); and a film material roll (13) for unloading is mounted at the cantilever end of the film frame arm (8).

5. The unloading device for bag making machine according to claim 4, characterized in that: The telescopic support structure comprises a second acting cylinder (9) and a pin shaft seat (11); the second acting cylinder (9) is arranged with its head facing downward and its head is mounted on the membrane frame arm (8) through a pin shaft; the second acting cylinder (9) is connected to the pin shaft seat (11) toward the end of the protruding piston rod; and the base of the pin shaft seat (11) is fixedly connected to the bottom edge of the frame (1).

6. The unloading device for bag making machine according to claim 1, characterized in that: It also includes a heat sealing mechanism (6), which is in the form of a hand-pressure sealing machine. The heat sealing mechanism (6) is mounted on the top of the frame (1) and is arranged on the plastic film strip between the leading film assembly (7) and the floating roller group (3).

7. The unloading device of the bag making machine according to any one of claims 1 to 6, characterized in that: The frame (1) comprises three large plates arranged in parallel and at intervals, and a set of the fixed roller group (2), the floating roller group (3), the cylinder bracket (4) and the first cylinder (5) are respectively arranged in two interval spaces, so that double-line unloading can be performed.

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