Negative pressure roller heat sealing device for concave-convex buckle self-sealing bag

Abstract

The present invention relates to a concave-convex buckle self-sealing bag negative pressure roller heat-sealing device, which includes a main frame and a roll output unit, a buffer unit, a processing unit, a heat-sealing unit and an adjustment unit installed on the main frame. The roll output unit, the buffer unit and the processing unit are sequentially installed on the main frame. The roll output unit is used for outputting the bag film; the buffer unit is used for buffering the output bag film; the processing unit is used for guiding, adsorbing and cutting the bag film; the heat-sealing unit is located below the processing unit and is used for heat-sealing the bag film; the adjustment unit is located on one side of the main frame and is used for adjusting the heat-sealing position of the processing unit. The advantages of the present invention are: it can continuously and quickly stick a fixed-length concave-convex buckle self-sealing strip on the bag film in a narrow space, and a conventional packaging machine can be modified to add this function without increasing the size of the packaging machine.

Description

Technical Field

[0001] The present invention relates to a concave-convex buckle self-sealing bag negative pressure roller heat-sealing device, belonging to the field of food packaging. Background Art

[0002] A concave-convex buckle self-sealing bag is a packaging bag that can be automatically sealed and reused. Since the purchased items cannot be used up at one time, it is inconvenient and has poor sealing performance to seal with a clip. Therefore, the demand for concave-convex buckle self-sealing bags has emerged. The encapsulation method of self-sealing packaging bags is different from that of general packaging bags. During encapsulation, it is generally required that the concave and convex parts of the zipper be respectively attached to the corresponding positions at the sealing part of the package, and it is required that the two sides of the packaging bag, that is, the part above the zipper, be sealed. In this way, when in use, the seal at the upper part of the zipper can be torn open, the zipper can be opened to take out the items in the packaging bag, and the zipper can be pressed again to achieve the purpose of secondary sealing.

[0003] The key technology in the bag-making process of concave-convex buckle self-sealing bags is the sealing device. There are mainly two existing sealing methods. One is ultrasonic sealing, which is mainly applied to the sealing in the process of prefabricated bag production. The sealing effect is good, but the cost is high. The other is heat sealing. For example, a Chinese patent with the publication number CN207292634U discloses a self-sealing bag packaging machine, which includes a film feeding machine, a self-sealing bag packaging and forming device, a self-sealing bag middle-sealing device, and a self-sealing bag transverse-sealing device that are controlled by a control system and arranged in sequence on a frame; it also includes a zipper conveyor, and the zipper conveyor feeds the zipper into the vertical edge of the packaging bag through the self-sealing bag packaging and forming device; a zipper flattening device is also arranged between the self-sealing bag middle-sealing device and the self-sealing bag transverse-sealing device. This self-sealing bag packaging machine can complete self-sealing packaging by automatically forming, arranging the zipper, middle-sealing, filling, and transverse-sealing.

[0004] Another Chinese patent with the publication number CN210391636U discloses a reciprocating packaging machine for zipper self-sealing bags. The film in the film unwinding mechanism is conveyed to the folding and forming mechanism through the tension adjusting mechanism to fold the film into a strip-shaped bag embryo belt. The zipper unwinding mechanism conveys the zipper to the first conveyor belt and places it on the opening opposite to the seal of the bag embryo belt. Then, the bag embryo belt and the zipper are heat-sealed and fixed through the zipper sealing mechanism. Then, the upper sealing block and the lower sealing block of the reciprocating sealing and cutting device cooperate with each other to heat-seal and cut the two openings of the bag embryo belt into individual finished products.

[0005] The above patent technologies describe the operation process of the existing bag-making technology. However, in the key sealing technology of concave-convex buckle in-situ bag-making, the traditional heat-sealing technology is still adopted, with low efficiency, poor adhesion between the bag film and the concave-convex buckle, and not being aesthetically pleasing. Summary of the Invention

[0006] To overcome the defects of the prior art, the present invention provides a concave-convex buckle self-sealing bag negative pressure roller heat-sealing device. The technical solution of the present invention is as follows:

[0007] A concave-convex buckle self-sealing bag negative pressure roller heat-sealing device includes a main frame and a roll output unit, a buffer unit, a processing unit, a heat-sealing unit and an adjustment unit installed on the main frame. The roll output unit, the buffer unit and the processing unit are sequentially installed on the main frame. The roll output unit is used for outputting the bag film; the buffer unit is used for buffering the output bag film; the processing unit is used for guiding, adsorbing and cutting the bag film; the heat-sealing unit is located below the processing unit and is used for heat-sealing the bag film; the adjustment unit is located on one side of the main frame and is used for adjusting the heat-sealing position of the processing unit.

[0008] The roll output unit includes a roll shaft, a roll motor and a concave-convex buckle roll. The roll shaft is fixedly installed on the main frame, and the concave-convex buckle roll is rotatably installed on the roll shaft and is driven by the roll motor.

[0009] The buffer unit includes a buffer bracket, a front guide wheel, an upper limit sensor, a lower limit sensor and a weight induction wheel. The buffer bracket is vertically installed on the buffer bracket. On the buffer bracket, a buffer chute is arranged along the vertical direction of the buffer bracket. The weight induction wheel is slidably matched with the buffer chute; a front guide wheel is arranged at the upper part of the buffer bracket, and the two front guide wheels are symmetrically arranged along the weight induction wheel; the upper limit sensor and the lower limit sensor are installed on the buffer bracket on one side of the buffer chute, the lower limit sensor is located below the upper limit sensor, and the weight induction wheel reciprocates between the upper limit sensor and the lower limit sensor.

[0010] The processing unit includes a left vertical frame, a right vertical frame, a linear guide rail, a guide rail mounting plate, a front side plate and a rear side plate. The left vertical frame and the right vertical frame are arranged oppositely and are both fixedly installed on the main frame; a linear guide rail is fixedly installed on the inner side of each of the left vertical frame and the right vertical frame, the guide rail mounting plate is slidably installed between the two linear guide rails, the front side plate and the rear side plate are sequentially installed on the guide rail mounting plate, a support shaft is installed between the front side plate and the rear side plate, a vertical plate is installed on the front side plate, and a guiding assembly, a cutting assembly and an adsorption assembly are sequentially installed on the vertical plate.

[0011] The adsorption assembly includes a roller shaft, a negative pressure roller, an air slip ring, a front air pipe, and a rear air pipe. The roller shaft is rotatably installed between the front side plate and the rear side plate through bearings; the negative pressure roller is sleeved on the roller shaft, one end of the air slip ring is installed on the rear side plate, and the other end is connected to the negative pressure roller through the front air pipe; a pressing buckle cylinder and a supporting buckle cylinder are sequentially installed on the vertical plate above the negative pressure roller, and a pressing block is installed on the pressing buckle cylinder; a supporting buckle bracket is installed on the supporting buckle cylinder, the supporting buckle bracket is arranged horizontally, and several supporting buckle wheels are installed on the supporting buckle bracket; a negative pressure fan is installed on the main frame, and the negative pressure fan is connected to the air slip ring through the rear air pipe, and the roller shaft is driven by a power unit.

[0012] The power unit includes a rotary servo motor, a driving synchronous pulley, and a driven synchronous pulley. The rotary servo motor is installed on the rear side plate, a driving synchronous pulley is installed on the output shaft of the rotary servo motor, and the driven synchronous pulley is installed at one end of the roller shaft. The driving synchronous pulley and the driven synchronous pulley are connected by a synchronous belt for transmission.

[0013] The adjustment unit includes an adjustment bracket, an adjustment screw rod, and an adjustment handwheel. The adjustment bracket is installed on the upper part of the left vertical frame. One end of the adjustment screw rod is connected to the front side plate, and the other end passes through the adjustment bracket and is installed with the adjustment handwheel. The adjustment screw rod is threadedly connected to the adjustment handwheel, and a position display is also sleeved on the adjustment screw rod.

[0014] The heat sealing unit includes a heat sealing cylinder bracket, a heat sealing cylinder, a fixed seat, a graphite copper sleeve, a guide seat, and a heat sealing block. The heat sealing cylinder bracket is fixedly installed on the right vertical frame, and the heat sealing cylinder is installed on the heat sealing cylinder bracket. The fixed seat is arranged horizontally and fixedly installed on the piston rod of the heat sealing cylinder. A guide seat is arranged on the upper part of the fixed seat, and a gap is formed between the guide seat and the fixed seat and they are connected together through the graphite copper sleeve; the heat sealing block is installed on the guide seat and approaches or moves away from the negative pressure roller under the drive of the heat sealing cylinder.

[0015] The described guiding component includes an upper rear guiding wheel, a lower rear guiding wheel, a front guiding tube, and a rear guiding tube. The upper rear guiding wheel and the lower rear guiding wheel are installed on the vertical plate. The upper rear guiding wheel is flush with the front guiding wheel. The lower rear guiding wheel is located below the upper rear guiding wheel and corresponds to the upper rear guiding wheel. A front guiding tube and a rear guiding tube corresponding to the front guiding tube are also installed on the vertical plate. One side of the front guiding tube is adjacent to the lower rear guiding wheel, and the other side is provided with the rear guiding tube. The front guiding tube and the rear guiding tube are both arranged horizontally, and a conveying space is formed between the front guiding tube and the rear guiding tube. A button feeding servo motor is installed on the vertical plate above the conveying space. A lower conveying wheel is installed on the output shaft of the button feeding servo motor, and an upper conveying wheel is installed on the vertical plate above the lower conveying wheel. The upper conveying wheel is located above the front guiding tube and the rear guiding tube, and the lower conveying wheel is located below the front guiding tube and the rear guiding tube.

[0016] The described cutting component includes a cutting cylinder and a cutter. The cutting cylinder is fixedly installed on the vertical plate, and the cutter is installed on the cutting cylinder and driven by the cutting cylinder.

[0017] The advantages of the present invention are as follows: The concave-convex buckle self-sealing bag produced by this device has a smooth, firm, flat, and beautiful seal, high bag-making efficiency, and a low rejection rate, greatly improving production efficiency and production capacity, saving production costs. Due to the high sealing quality, it can effectively prevent items from getting damp, and can continuously and quickly stick a fixed-length concave-convex buckle self-sealing strip on the bag film in a narrow space. Conventional packaging machines can be modified to add this function without increasing the size of the packaging machine, and it is applicable to various pillow-type packaging machines, especially long-strip materials that cannot be packaged by vertical packaging machines. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 is a schematic diagram of the main structure of the present invention.

[0019] Figure 2 is Figure 1 the front view of

[0020] Figure 3 is Figure 1 the top view of

[0021] Figure 4 is Figure 1 the left view of

[0022] Figure 5 is Figure 4 the B-B sectional view of EMBODIMENTS

[0023] The present invention will be further described below in conjunction with specific embodiments, and the advantages and features of the present invention will become clearer with the description. However, these embodiments are merely exemplary and do not constitute any limitation to the scope of the present invention. Those skilled in the art should understand that the details and forms of the technical solutions of the present invention can be modified or replaced without departing from the spirit and scope of the present invention, but such modifications and replacements all fall within the protection scope of the present invention.

[0024] See Figures 1 to 5 , the present invention relates to a concave-convex buckle self-sealing bag negative pressure roller heat-sealing device, which includes a main frame 1 and a roll output unit, a buffer unit, a processing unit, a heat-sealing unit and an adjustment unit installed on the main frame 1. The roll output unit, the buffer unit and the processing unit are sequentially installed on the main frame 1. The roll output unit is used for outputting the bag film; the buffer unit is used for buffering the output bag film; the processing unit is used for guiding, adsorbing and cutting the bag film; the heat-sealing unit is located below the processing unit and is used for heat-sealing the bag film; the adjustment unit is located on one side of the main frame 1 and is used for adjusting the heat-sealing position of the processing unit.

[0025] The roll output unit includes a roll shaft 8, a roll motor 7 and a concave-convex buckle roll 2. The roll shaft 8 is fixedly installed on the main frame 1, and the concave-convex buckle roll 2 is rotatably installed on the roll shaft 8, and the roll shaft 8 is driven by the roll motor 7.

[0026] The buffer unit includes a buffer bracket, a front guide wheel 4, an upper limit sensor 9-1, a lower limit sensor 9-2 and a weight induction wheel 5. The buffer bracket is vertically installed on the buffer bracket. On the buffer bracket, a buffer chute 3 is arranged along the vertical direction of the buffer bracket. The weight induction wheel 5 is slidably matched with the buffer chute 3; a front guide wheel 4 is arranged on the upper part of the buffer bracket, and the two front guide wheels 4 are symmetrically arranged along the weight induction wheel 5; the upper limit sensor 9-1 and the lower limit sensor 9-2 are installed on the buffer bracket on one side of the buffer chute 3, and the lower limit sensor 9-2 is located below the upper limit sensor, and the weight induction wheel 5 reciprocates between the upper limit sensor 9-1 and the lower limit sensor 9-2.

[0027] The described processing unit includes a left support frame 31, a right support frame 30, a linear guide rail 32, a guide rail mounting plate 33, a front side plate 16, and a rear side plate 17. The left support frame 31 and the right support frame 30 are arranged opposite to each other and are both fixedly installed on the main frame 1. A linear guide rail 32 is fixedly installed on the inner side of each of the left support frame 31 and the right support frame 30. The guide rail mounting plate 33 is slidably installed between the two linear guide rails 32. The front side plate 16 and the rear side plate 17 are sequentially installed on the guide rail mounting plate 33. A support shaft 18 is installed between the front side plate 16 and the rear side plate 17. A vertical plate 10 is installed on the front side plate 16. A guiding assembly, a cutting assembly, and an adsorption assembly are sequentially installed on the vertical plate 10.

[0028] The described adsorption assembly includes a roller shaft 19, a negative pressure roller 20, an air slip ring 21, a front air pipe 221, and a rear air pipe 22. The roller shaft 19 is rotatably installed between the front side plate 16 and the rear side plate 17 through bearings. The negative pressure roller 20 is sleeved on the roller shaft 19. One end of the air slip ring 21 is installed on the rear side plate, and the other end is communicated with the negative pressure roller 20 through the front air pipe 221 (the negative pressure roller 20 is provided with a positioning groove, and there are several through holes in the positioning groove). A pressing cylinder 25 and a holding cylinder 27 are sequentially installed on the vertical plate 10 above the negative pressure roller 20. A pressing block 26 is installed on the pressing cylinder 25. A holding bracket 28 is installed on the holding cylinder 27. The holding bracket 28 is arranged horizontally, and several holding wheels 29 are installed on the holding bracket 28. A negative pressure blower 36 is installed on the main frame 1. The negative pressure blower 36 is communicated with the air slip ring 21 through the rear air pipe 22. The roller shaft 19 is driven by a power unit.

[0029] The described power unit includes a rotary servo motor 34, a driving synchronous pulley 35, and a driven synchronous pulley. The rotary servo motor 34 is installed on the rear side plate 17. The driving synchronous pulley 35 is installed on the output shaft of the rotary servo motor 34. The driven synchronous pulley is installed at one end of the roller shaft 19. The driving synchronous pulley 35 and the driven synchronous pulley 34 are connected by a synchronous belt for transmission.

[0030] The described adjustment unit includes an adjustment bracket 38, an adjustment screw rod 37, and an adjustment handwheel 40. The adjustment bracket 38 is installed on the upper part of the left support frame 31. One end of the adjustment screw rod 37 is connected to the front side plate 16, and the other end is installed with the adjustment handwheel 40 after passing through the adjustment bracket 38. The adjustment screw rod 37 is in threaded connection with the adjustment handwheel 40. A position display 39 is also sleeved on the adjustment screw rod 37.

[0031] The described heat-sealing unit includes a heat-sealing cylinder bracket 41, a heat-sealing cylinder 42, a fixed seat 43, a graphite copper bushing 44, a guide seat 45, and a heat-sealing block 46. The heat-sealing cylinder bracket 41 is fixedly installed on the right vertical frame 30. The heat-sealing cylinder 42 is installed on the heat-sealing cylinder bracket 41. The fixed seat 43 is arranged horizontally and fixedly installed on the piston rod of the heat-sealing cylinder 42. The guide seat 45 is arranged on the upper part of the fixed seat 43, forming a spacing with the fixed seat 43 and connected together through the graphite copper bushing 44. The heat-sealing block 46 is installed on the guide seat 45 and approaches or moves away from the negative pressure roller 20 under the drive of the heat-sealing cylinder 42.

[0032] The described guiding assembly includes an upper rear guiding wheel 11, a lower rear guiding wheel 49, a front guiding tube 12, and a rear guiding tube 48. The upper rear guiding wheel 11 and the lower rear guiding wheel 49 are installed on the vertical plate 10, and the upper rear guiding wheel 11 is flush with the front guiding wheel 4. The lower rear guiding wheel 49 is located below the upper rear guiding wheel 11 and corresponds to the upper rear guiding wheel 11. The front guiding tube 12 and the rear guiding tube 48 corresponding to the front guiding tube 12 are also installed on the vertical plate 10. One side of the front guiding tube 12 is adjacent to the lower rear guiding wheel 49, and the other side is provided with the rear guiding tube 48. The front guiding tube 12 and the rear guiding tube 48 are both arranged horizontally, and a conveying space is formed between the front guiding tube 12 and the rear guiding tube 48. The button feeding servo motor 15 is installed on the vertical plate 10 above the conveying space. The output shaft of the button feeding servo motor 15 is installed with a lower conveying wheel 14, and the upper conveying wheel 13 is installed on the vertical plate 10 above the lower conveying wheel 14. The upper conveying wheel 13 is located above the front guiding tube 12 and the rear guiding tube 48, and the lower conveying wheel 14 is located below the front guiding tube 12 and the rear guiding tube 48.

[0033] The described cutting assembly includes a cutting cylinder 23 and a cutter 24. The cutting cylinder 23 is fixedly installed on the vertical plate 10, and the cutter 24 is installed on the cutting cylinder 23 and driven by the cutting cylinder 23.

[0034] The working principle of the present invention is as follows: When starting up and running, the roller winding motor 7 drives the roller shaft 8 to rotate, and then drives the concave-convex buckle roller winding 2 to rotate to release the concave-convex buckle self-sealing strip 6. The front guide wheel 4 and the weight induction wheel 5 installed on the buffer chute 3 form a tensile state after being wound by the concave-convex buckle self-sealing strip (6). When the weight induction wheel 5 is pulled to near the upper limit sensor 9-1 by the concave-convex buckle self-sealing strip 6, the upper limit sensor 9-1 generates a signal to inform the control system that the buffer of the concave-convex buckle self-sealing strip 6 is insufficient, and then controls the roller winding motor 7 to rotate to release more concave-convex buckle self-sealing strips 6. At this time, the weight induction wheel 5 will drop as the concave-convex buckle self-sealing strip 6 increases. When the weight induction wheel 5 is pulled to near the lower limit sensor 9-2 by the concave-convex buckle self-sealing strip 6, the lower limit sensor 9-2 generates a signal to inform the control system that the buffer of the concave-convex buckle self-sealing strip 6 is sufficient, and at this time the roller winding motor 7 stops rotating. The purpose of this design is to make the concave-convex buckle self-sealing strip 6 be released stably in a line, compatible with various set cutting lengths, and not cause breakage or excessive amounts. After being guided by the upper rear guide wheel 11 and the lower rear guide wheel 49, the concave-convex buckle self-sealing strip 6 enters the conveying cavity space through the front guide tube 12. The concave-convex buckle self-sealing strip 6 will be exposed between the front guide tube 12 and the rear guide tube 48 and be clamped by the upper conveying wheel 13 and the lower conveying wheel 14. The upper conveying wheel 13 and the lower conveying wheel 14 are of a gear structure and mesh with each other to clamp the concave-convex buckle self-sealing strip 6. The buckle feeding servo motor 15 drives the lower conveying wheel 14 to rotate, thereby generating a pulling force on the concave-convex buckle self-sealing strip 6, and conveying the concave-convex buckle self-sealing strip 6 to the positioning groove of the negative pressure roller 20 according to the parameters set by the program for a fixed length. When the buckle feeding servo motor 15 rotates and conveys, the buckle supporting cylinder 27 drives the buckle supporting bracket 28 and the buckle supporting wheel 29 to move downward, pressing a plurality of buckle supporting wheels 29 on the upper surface of the concave-convex buckle self-sealing strip 6. The purpose of this is to make the concave-convex buckle self-sealing strip 6 fully contact the positioning groove of the negative pressure roller 20. When the buckle feeding servo motor 15 stops, it indicates that the fixed-length conveying is completed. At this time, the buckle pressing cylinder 25 drives the pressing block 26 to move downward. After pressing the concave-convex buckle self-sealing strip 6, the cutting cylinder 23 drives the cutter 24 to move downward to achieve the fixed-length cutting of the concave-convex buckle self-sealing strip 6. For the purpose of achieving high-speed operation, the negative pressure roller 20 is provided with a plurality of positioning grooves. When the positioning groove needs to rotate to the heat-sealing station after cutting, the negative pressure generated by the negative pressure fan 36 enters the air slip ring 21 through the rear air pipe 22. The purpose of setting the air slip ring 21 is to solve the problem of air leakage in the rotating structure. The number of air paths in the air slip ring 21 corresponds to the plurality of positioning grooves of the negative pressure roller 20 one by one. There are a plurality of through holes in the positioning groove of the negative pressure roller 20, and finally the negative pressure generates a suction force on the concave-convex buckle self-sealing strip 6 in the positioning groove to achieve the purpose of adsorption. In this way, the concave-convex buckle self-sealing strip 6 will not fall off when the negative pressure roller 20 rotates. When the rotation servo motor 34 drives the negative pressure roller 20 to rotate to the heat-sealing station and then stops rotating, the heat-sealing cylinder 42 drives the heat-sealing block 46 to move upward, making the bag film 47 contact the concave-convex buckle self-sealing strip 6 in the positioning groove of the negative pressure roller 20. Through heat conduction, the concave-convex buckle self-sealing strip 6 is heat-sealed at the specified position of the bag film 47.Since the packaging machine needs to package bags with different width dimensions, the heat-sealing position of the concave-convex buckle self-sealing strip 6 on the bag film 47 also needs to be adjusted as required. When the adjusting handwheel 40 is rotated, it will drive the adjusting screw rod 37 to rotate, thereby driving the entire negative pressure roller device to shift, so as to achieve the purpose of adjusting the position, and the adjusted position will be displayed in real time on the installed position display 39.

[0035] The above is only a preferred specific embodiment of the present invention, but the protection scope of the present invention is not limited thereto. Any person skilled in the art within the technical scope disclosed by the present invention, according to the technical solution of the present invention and its inventive concept, makes equivalent substitutions or changes, and should be covered by the protection scope of the present invention.

Claims

1. A concave-convex buckle self-sealing bag negative pressure roller heat-sealing device, characterized in that, it includes a main frame and a roll output unit, a buffer unit, a processing unit, a heat-sealing unit and an adjustment unit installed on the main frame. The roll output unit, the buffer unit and the processing unit are sequentially installed on the main frame. The roll output unit is used for outputting the bag film; the buffer unit is used for buffering the output bag film; the processing unit is used for guiding, adsorbing and cutting the bag film; the heat-sealing unit is located below the processing unit and is used for heat-sealing the bag film; the adjustment unit is located on one side of the main frame and is used for adjusting the heat-sealing position of the processing unit; the processing unit includes a left vertical frame, a right vertical frame, linear guide rails, a guide rail mounting plate, a front side plate and a rear side plate. The left vertical frame and the right vertical frame are arranged oppositely and are both fixedly installed on the main frame; a linear guide rail is fixedly installed on the inner side of each of the left vertical frame and the right vertical frame, and the guide rail mounting plate is slidably installed between the two linear guide rails. The front side plate and the rear side plate are sequentially installed on the guide rail mounting plate. A support shaft is installed between the front side plate and the rear side plate. A vertical plate is installed on the front side plate, and a guiding component, a cutting component and an adsorbing component are sequentially installed on the vertical plate; the adsorbing component includes a roller shaft, a negative pressure roller, an air slip ring, a front air pipe and a rear air pipe. The roller shaft is rotatably installed between the front side plate and the rear side plate through bearings; the negative pressure roller is sleeved on the roller shaft. One end of the air slip ring is installed on the rear side plate, and the other end is communicated with the negative pressure roller through the front air pipe; a buckle pressing cylinder and a buckle supporting cylinder are sequentially installed on the vertical plate above the negative pressure roller, and a pressing block is installed on the buckle pressing cylinder; a buckle supporting bracket is installed on the buckle supporting cylinder. The buckle supporting bracket is arranged horizontally, and several buckle supporting wheels are installed on the buckle supporting bracket; a negative pressure fan is installed on the main frame, and the negative pressure fan is communicated with the air slip ring through the rear air pipe. The roller shaft is driven by a power unit; The guide assembly comprises an upper rear guide wheel, a lower rear guide wheel, a front guide tube, and a rear guide tube, and the upper rear guide wheel and the lower rear guide wheel are installed on the vertical plate; the lower rear guide wheel is located at the lower part of the upper rear guide wheel and corresponds to the upper rear guide wheel; a front guide tube and a rear guide tube corresponding to the front guide tube are also installed on the vertical plate, one side of the front guide tube is adjacent to the lower rear guide wheel, and the other side is provided with the rear guide tube, the front guide tube and the rear guide tube are both arranged in the horizontal direction, and a conveying space is formed between the front guide tube and the rear guide tube; a button feeding servo motor is installed on the vertical plate above the conveying space, a lower conveying wheel is installed on the output shaft of the button feeding servo motor, and an upper conveying wheel is installed on the vertical plate on the lower conveying wheel, the upper conveying wheel is located at the upper part of the front guide tube and the rear guide tube, and the lower conveying wheel is located at the lower part of the front guide tube and the rear guide tube.

2. A negative pressure roller heat sealing device for a concave-convex buckle ziplock bag according to claim 1, It is characterized in that The roll output unit includes a roll shaft, a roll motor and a concave-convex buckle roll. The roll shaft is fixedly mounted on the main frame, and the concave-convex buckle roll is rotatably mounted on the roll shaft. The roll shaft is driven by the roll motor.

3. A negative pressure roller heat sealing device for a concave-convex buckle ziplock bag according to claim 1 or 2, It is characterized in that The cache unit includes a cache bracket, a front guide wheel, an upper limit sensor, a lower limit sensor and a counterweight sensing wheel. The cache bracket is vertically installed on the main frame. A cache slide is arranged on the cache bracket along the vertical direction of the cache bracket, and the counterweight sensing wheel is slidably matched with the cache slide; a front guide wheel is arranged on the upper part of the cache bracket, and the two front guide wheels are symmetrically arranged along the counterweight sensing wheel; the upper limit sensor and the lower limit sensor are installed on the cache bracket on one side of the cache slide, and the lower limit sensor is located at the lower part of the upper limit sensor, and the counterweight sensing wheel reciprocates between the upper limit sensor and the lower limit sensor.

4. A negative pressure roller heat sealing device for a concave-convex buckle ziplock bag according to claim 3, It is characterized in that The upper rear guide wheel is flush with the front guide wheel.

5. The negative pressure roller heat sealing device for ziplock bags with concave and convex buckles according to claim 1, It is characterized in that The power unit includes a rotary servo motor, a driving synchronous pulley and a driven synchronous pulley. The rotary servo motor is installed on the rear side plate. The driving synchronous pulley is installed on the output shaft of the rotary servo motor. The driven synchronous pulley is installed on one end of the drum shaft. The driving synchronous pulley and the driven synchronous pulley are connected by a synchronous belt transmission.

6. A negative pressure roller heat sealing device for a concave-convex buckle ziplock bag according to claim 1, It is characterized in that The adjustment unit includes an adjustment bracket, an adjustment screw and an adjustment handwheel. The adjustment bracket is installed on the upper part of the left vertical frame. One end of the adjustment screw is connected to the front side plate, and the other end passes through the adjustment bracket and is installed with the adjustment handwheel. The adjustment screw is threadedly connected to the adjustment handwheel, and a position display is also installed on the adjustment screw.

7. A negative pressure roller heat sealing device for a concave-convex buckle ziplock bag according to claim 6, It is characterized in that The heat sealing unit comprises a heat sealing cylinder bracket, a heat sealing cylinder, a fixed seat, a graphite copper sleeve, a guide seat and a heat sealing block. The heat sealing cylinder bracket is fixedly mounted on the right vertical frame, and the heat sealing cylinder is mounted on the heat sealing cylinder bracket. The fixed seat is arranged in the horizontal direction and fixedly mounted on the piston rod of the heat sealing cylinder. The guide seat is arranged on the upper part of the fixed seat, and a gap is formed between the guide seat and the fixed seat, and they are connected together by the graphite copper sleeve; the heat sealing block is mounted on the guide seat, and is driven by the heat sealing cylinder to approach or move away from the negative pressure roller.

8. The negative pressure roller heat sealing device for the concave-convex buckle ziplock bag according to claim 1, It is characterized in that The cutting assembly comprises a cutting cylinder and a cutter. The cutting cylinder is fixedly mounted on the vertical plate, and the cutter is mounted on the cutting cylinder and driven by the cutting cylinder.

Images