Scraper bag scratching mechanism and bag making device

Abstract

The utility model provides a scrapper bag scratching mechanism and a bag making device, the scrapper bag scratching mechanism comprises a support, a motor, a driving wheel, a driven wheel, a belt, a first proximity sensor, a second proximity sensor, an air cylinder, a bag pressing plate, a pressing belt connecting block, a cutter mounting plate, a cutting cutter and a PLC (programmable logic controller), the driving wheel drives the belt, the driven wheel is arranged on the other side of the support, and the belt drives the driven wheel. The cutter mounting plate is connected with the belt through the belt pressing connecting block, and the cutting cutter is fixedly mounted at the lower end part of the cutter mounting plate; the first proximity sensor and the second proximity sensor are arranged on the left side and the right side of the support correspondingly and located between the driving wheel and the driven wheel. The air cylinder is installed below the support, and the bag pressing plate is fixedly connected with the tail end of a guide rod of the air cylinder. The first proximity sensor, the second proximity sensor, the motor and the air cylinder are electrically connected with the PLC.

Description

Technical Field

[0001] The utility model relates to the technical field of packaging equipment, in particular to a scraper bag-scraping mechanism and a bag-making device. Background Art

[0002] The bag-making device is a device that divides a long whole packaging bag into individual packaging bags, and is the main equipment for making packaging bags. The mechanism that realizes the cutting or splitting function of the packaging bag in the bag-making device is a key mechanism. In the patent application document of the prior art CN202311186796.X, a slitting structure of a fully automatic high-speed bag-making machine is disclosed, which is provided with a fixed rod, and the movable block can move along the direction of the fixed rod. The slitting knife is controlled and adjusted by a number of screws and gears. Although the slitting structure can realize the slitting of packaging bags, it has the following defects: 1) Precision parts such as screws and gears are used. These parts are prone to wear and poor lubrication after a period of time, affecting their performance and accuracy; 2) The structure is very complex, the efficiency is not high, and the degree of automation is low; 3) Usually the cutting knife may stick to the packaging bag during the cutting process, and the corresponding countermeasures are not considered in this solution. Utility Model Content

[0003] In order to solve the above problems, the utility model provides a scraper bag-scraping mechanism and a bag-making device.

[0004] In order to achieve the above purpose, the present invention adopts the following technical solutions:

[0005] The utility model provides a scraper bag-scraping mechanism, which is characterized in that it includes: a support, a motor, a driving wheel, a driven wheel, a belt, a first proximity sensor, a second proximity sensor, a cylinder, a bag pressing plate, a belt pressing connecting block, a knife mounting plate, a cutting knife, and a PLC controller, wherein the motor is fixed on one side of the support, the motor drives the driving wheel, the driving wheel drives the belt, the driven wheel is arranged on the other side of the support, and the belt drives the driven wheel; the knife mounting plate is connected to the belt through the belt pressing connecting block, and the cutting knife is installed and fixed at the lower end of the knife mounting plate; the first proximity sensor and the second proximity sensor are respectively arranged on the left and right sides of the support, and are located between the driving wheel and the driven wheel; the cylinder is installed below the support, and the bag pressing plate is connected and fixed to the end of the guide rod of the cylinder; the first proximity sensor, the second proximity sensor, the motor, the cylinder and the PLC controller are electrically connected.

[0006] Furthermore, the scraper bag-scraping mechanism provided by the present invention may also have the following features: a slide rail is installed on the support, a slide table is installed on the slide rail, and the knife mounting plate is also connected and fixed to the slide table.

[0007] Furthermore, the scraper bag-scraping mechanism provided by the present invention may also have the following features: wherein, there are two cylinders, which are respectively arranged on the left and right sides below the support and located between the driving wheel and the driven wheel.

[0008] Furthermore, the scraper bag-cutting mechanism provided by the present invention may also have the following feature: the lower end portion of the cutting knife is triangular.

[0009] The utility model also provides a bag making device, which is characterized in that it includes: a scraper bag cutting mechanism, a front bag pressing mechanism, a lower bag pressing mechanism, a transmission mechanism, and a bottom support; wherein the scraper bag cutting mechanism is arranged at the upper part of the frame; the scraper bag cutting mechanism is the above-mentioned scraper bag cutting mechanism; the transmission mechanism is arranged in the middle part of the frame, and includes a conveying roller for conveying packaging bags and an output roller for outputting packaging bags; the bottom support is arranged below the scraper bag cutting mechanism, located between the conveying roller and the output roller, and the bottom support has a groove for accommodating a cutting knife; the front bag pressing mechanism is located in front of the scraper bag cutting mechanism, and the lower bag pressing mechanism is located below the transmission mechanism.

[0010] Furthermore, the bag-making device provided by the present invention may also have the following features: wherein, the transmission mechanism also includes: a first motor, a first belt, a first driving wheel, a first driven wheel, a second driven wheel, and a tensioning wheel; the first motor is installed on the frame, the first motor drives the first driving wheel, and the first driving wheel is connected to the second belt; the first driven wheel, the second driven wheel, and the tensioning wheel are connected to the second belt; the conveying roller is connected to the first driven wheel through a shaft; and the output roller is connected to the second driven wheel through a shaft.

[0011] Furthermore, the bag making device provided by the present invention may also have the following features: wherein, the front bag pressing mechanism includes: a first cylinder, a pressure plate, a cylinder mounting plate, and a connecting plate; the connecting plate is fixed on the frame, the cylinder mounting plate is connected and fixed to the connecting plate, the first cylinder is installed and fixed on the cylinder mounting plate, and the pressure plate is driven up and down by the first cylinder.

[0012] Furthermore, the bag making device provided by the present invention may also have the following features: wherein, the lower bag pressing mechanism includes: a fixed plate, a screw, a spring, a second cylinder, a bracket, a pressure roller, and a pressure roller mounting shaft; the bracket is driven up and down by the second cylinder; the pressure roller mounting shaft is connected and fixed to the bracket, and is located directly below the conveying roller; the fixed plate is connected and fixed to the second cylinder, the two screws are fixed on the fixed plate, the spring is arranged on the outer periphery of the upper end of the screw, and the top of the spring is connected and fixed to the bracket.

[0013] Furthermore, the bag-making device provided by the present invention may also have the following feature: an anti-slip strip is provided on the upper end surface of the bottom support.

[0014] Furthermore, the bag-making device provided by the present invention may also have the following feature: a slide groove is provided at the bottom of the frame.

[0015] Functions and effects of this utility model:

[0016] The scraper bag-cutting mechanism of this utility model uses a motor-driven pulley to rotate and drive the cutting blade back and forth. This mechanism is coordinated by a slide and guide rails. Its simple structure, devoid of precision components such as screws and gears, ensures fast and smooth cutting, improving bag cutting efficiency. Furthermore, the scraper bag-cutting mechanism includes a bag-pressing plate, which is raised and lowered by a pneumatic cylinder, eliminating the problem of bags sticking to the blade teeth. Furthermore, the position of the blade mounting plate is sensed by first and second proximity sensors. A PLC controller electrically connects the motor and cylinder, making the scraper bag-cutting mechanism fully automated.

[0017] The bag making device of the utility model is provided with a front bag pressing mechanism and a bottom bag pressing mechanism, which can realize pressing the packaging bag from the front and bottom, so that the cutting work of the scraper bag cutting mechanism is smoother and the blade edge is neat and beautiful. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 This is a structural side view of the bag making device in an embodiment of the present utility model;

[0019] Figure 2 This is a structural perspective diagram of a bag-making device in an embodiment of the present utility model;

[0020] Figure 3 It is a structural diagram of the transmission mechanism in an embodiment of the present utility model;

[0021] Figure 4 It is a structural diagram of the lower bag pressing mechanism in an embodiment of the present utility model;

[0022] Figure 5 It is a structural diagram of the front bag pressing mechanism in an embodiment of the present utility model;

[0023] Figure 6 This is a front structural diagram of the scraper bag-scraping mechanism in an embodiment of the utility model;

[0024] Figure 7 This is a schematic diagram of the back structure of the scraper bag-scraping mechanism in an embodiment of the present utility model;

[0025] Figure 8 yes Figure 1 Enlarged view of point A in the middle.

[0026] Markings in the figure: 1. Transmission mechanism; 10. Fixed plate; 11. Motor; 12. Belt; 13. Driving wheel; 14. Conveyor roller; 15. Output roller; 16. Output roller shaft; 17. Second driven wheel; 18. First driven wheel; 19. Tensioning wheel; 2. Lower bag pressing mechanism; 21. Screw; 22. Fixed plate; 23. Spring; 24. Second cylinder; 25. Bracket; 26. Pressure roller; 27. Pressure roller mounting shaft; 28. Fixed block; 3. Front bag pressing mechanism; 31. Cylinder; 32. Pressure plate; 33. Cylinder fixing plate; 34. Connecting plate; 4. Bottom support; 41. Anti-slip strip; 42. Groove. 5. Scraper bag-cutting mechanism; 510. Motor; 501. First proximity sensor; 502. Second proximity sensor; 503. Cylinder; 504. Bag pressing plate; 505. Driven pulley; 506. Belt pressing connecting block; 507. Driving pulley; 508. Knife mounting plate; 509. Cutting knife; 511. Belt; 512. Slide rail; 513. Slide table; 514. Support. DETAILED DESCRIPTION

[0027] In order to make the technical means, creative features, objectives and effects achieved by the present invention easier to understand, the following embodiments and accompanying drawings will specifically illustrate the technical solutions of the present invention.

[0028] The present invention provides a bag scraping mechanism and a bag making device. Figure 1 and Figure 2 The bag-making device comprises a transmission mechanism 1, a lower bag-pressing mechanism 2, a front bag-pressing mechanism 3, a bottom support 4, and a scraper bag-slitting mechanism 5. The scraper bag-slitting mechanism 5 is located at the top of the frame and is used to cut the packaging bags. The transmission mechanism 1 is located in the middle of the frame and is used to convey the packaging bags. The lower bag-pressing mechanism 2 is located below the transmission mechanism 1 and is used to press the packaging bags upward. The front bag-pressing mechanism 3 is located in front of the scraper bag-slitting mechanism 5 and is used to press the packaging bags downward. The bottom support 4 is located below the scraper bag-slitting mechanism 5 and is used to cooperate with the cutting knife to cut the packaging bags.

[0029] See also Figure 6 and Figure 7 The scraper bag-cutting mechanism 5 includes: a support 514, a motor 510, a driving wheel 507, a driven wheel 505, a belt 511, a first proximity sensor 501, a second proximity sensor 502, a cylinder 503, a bag pressing plate 504, a belt pressing connecting block 506, a knife mounting plate 508, a cutting knife 509, a PLC controller (not shown in the figure), a slide rail 512, and a slide table 513.

[0030] The support 514 includes a flat plate portion, a plurality of upper vertical plate portions for mounting the driving wheel, the driven wheel, and the sensor, and a lower vertical plate portion for mounting the cylinder. The support 514 is connected and fixed to the frame.

[0031] A motor 510 is fixed to one side of a support 514. It drives the driving pulley 507, which in turn drives the belt 511. The driven pulley 505 is located on the other side of the support 514, and the belt 511 drives the driven pulley 505. A knife mounting plate 508 is connected to the belt 511 via bolts connected to the belt-pressing connecting block 506. The knife mounting plate 508 is attached below the belt 511. A cutting knife 509 is fixed to the lower end of the knife mounting plate 508. The lower end of the cutting knife 509 is triangular in shape. The motor 510 drives the belt 511, and the knife mounting plate 508 drives the cutting knife 509 to move left and right.

[0032] The support 514 is fixed with a slide rail 512, and the slide rail 512 is equipped with a slide platform 513. The knife mounting plate 508 is also fixed with the slide platform 513 bolts. When the knife mounting plate 508 moves, the slide platform 513 moves along the slide rail 512, plays a guiding role and a stabilizing role.

[0033] First proximity sensor 501 and second proximity sensor 502 are respectively disposed on the left and right sides of support 514, located between driving wheel 507 and driven wheel 505. First proximity sensor 501 and second proximity sensor 502 are used to sense the proximity of knife mounting plate 508. First proximity sensor 501 and second proximity sensor 502 utilize conventional proximity sensors. Alternatively, capacitive proximity sensors, infrared proximity sensors, or the like may be used depending on the actual situation.

[0034] Two cylinders 503 are mounted on either side of the support 514, located between the driving wheel 507 and the driven wheel 505. The bag-pressing plate 504 is connected to the ends of the guide rods of the cylinders 503 and is driven up and down by the cylinders 503. The bag-pressing plate 504 compresses and tightens the packaging bag, making it easier for the cutting blade 509 to cut the bag.

[0035] The first proximity sensor 501, the second proximity sensor 502, the motor 510, and the cylinder 503 are electrically connected to the PLC controller. The first proximity sensor 501 and the second proximity sensor 502 transmit sensing information to the PLC controller, which controls the operation of the motor 510 and the cylinder 503.

[0036] See also Figure 3 The transmission mechanism 1 includes a conveying roller 14, an output roller 15, a first motor 11, a first belt 12, a first driving pulley 13, a first driven pulley 18, a second driven pulley 17, and a tensioning pulley 19.

[0037] The first motor 11 is mounted on the fixed plate 10 (the fixed plate 10 is part of the frame) and drives the first driving pulley 13, which is connected to the second belt 511. The first driven pulley 18, the second driven pulley 17, and the tensioning pulley 19 are connected to the second belt 511 and are driven to rotate by the second belt 511. The tensioning pulley 19 is used to adjust the belt tension. The conveyor roller 14 is connected to the first driven pulley 18 via a shaft. The output roller 15 is connected to the second driven pulley 17 via the output roller shaft 16. The conveyor roller 14 is used to convey the packaging bags to be cut to the bottom support 4. The output roller 15 is used to convey the cut packaging bags.

[0038] See also Figure 1 and Figure 8 The bottom support 4 is located between the conveying roller 14 and the output roller 15, and the bottom support 4 has a groove 42 for accommodating the cutting knife 509. The upper end surface of the bottom support 4 is provided with an anti-slip strip 41.

[0039] See also Figure 1 、 Figure 2 and Figure 5 The front bag pressing mechanism 3 includes: a first cylinder 31, a pressing plate 32, a cylinder fixing plate 33, and a connecting plate 34. The connecting plate 34 is fixed to the frame. The cylinder fixing plate 33 is connected and fixed to the connecting plate 34. The first cylinder 31 is mounted and fixed to the cylinder fixing plate 33. The pressing plate 32 is driven up and down by the first cylinder 31. When cutting bags, the first cylinder 31 drives the pressing plate 32 to descend, pressing the packaging bag on the output shaft 15 to prevent the packaging bag from shifting during cutting.

[0040] See also Figure 1 、 Figure 2 and Figure 4 The lower bag pressing mechanism 2 includes: a screw 21, a fixing plate 22, a spring 23, a second cylinder 24, a bracket 25, a pressing roller 26, and a pressing roller mounting shaft 27.

[0041] See also Figure 1 The second cylinder 24 is fixed to the frame via a fixing block 28. Figure 2 and Figure 4 The second air cylinder 24 is a three-guide-rod cylinder. A bracket 25 is fixed to the connecting blocks at the ends of the guide rods of the second air cylinder 24, and is driven up and down by the second air cylinder 24. The pressure roller mounting shaft 27 is connected and fixed to the bracket 25 and is located directly below the conveyor roller 14. When the bag needs to be cut, the second air cylinder 24 drives the bracket 25 upward, and the pressure roller 26 moves toward the conveyor roller 14 until the bag is compressed.

[0042] The fixing plate 22 is connected and fixed to the second cylinder 24. The two screws 21 are fixed to the fixing plate 22. The spring 23 is arranged on the outer periphery of the upper end of the screw 21. The top of the spring 23 is connected and fixed to the bracket 25. The spring 23 provides elastic force for the bracket 25 during the rising and lowering process of the bracket 25, playing a buffering role.

[0043] See also Figure 1 and Figure 2 The bottom of the frame is provided with a slide 6 for cooperating with the slide rail provided on the production line. The entire bag-making device can be installed at a suitable position on the production line according to actual conditions.

[0044] In this embodiment, the connection between the components adopts conventional connection methods such as bolt connection, welding, plug-in connection, etc. according to actual conditions, so they are not described in detail one by one.

[0045] The working process of the bag making device mentioned in this embodiment is as follows:

[0046] See Figure 1 Long bags enter the bag-making unit from the rear and, after being cut, are discharged from the front. The bags are conveyed by the transmission device 1, positioned below the conveyor roller 14 and above the output roller 15. The conveyor roller 14 feeds the bags in. When the bag's cut-to-be-cut position reaches the bottom support 4, the lower and front bag-pressing mechanisms 2 and 3 respectively compress the bag. The scraper-slicing mechanism 5 then performs the cut. The cylinder 503 drives the bag-pressing plate 504 downward to compress the bag's ends. Then, the motor 510 rotates the belt 511, moving the cutting blade 509. A proximity sensor senses the bag and transmits a signal to the PLC controller, which pauses the motor 510, completing the cut. The cylinder 503 then drives the bag-pressing plate 504 upward to separate it from the bag, preventing it from sticking to the cutting blade 509. Once the cut is complete, the lower and front bag-pressing mechanisms 2 and 3 release, and the cut bag is discharged by the output roller 15.

[0047] The above embodiments are merely preferred embodiments of the present invention and are not intended to limit the scope of protection of the present invention. Those skilled in the art will readily appreciate that the present invention is susceptible to various modifications and variations. Any modifications, equivalent substitutions, or improvements made within the spirit and principles of the present invention are intended to fall within the scope of protection of the present invention.

Claims

1. A scraper bagging mechanism, characterized in that: include: Support, motor, driving wheel, driven wheel, belt, first proximity sensor, second proximity sensor, cylinder, bag pressing plate, belt pressing connecting block, knife mounting plate, cutting knife, PLC controller, The motor is fixed on one side of the support, the motor drives the driving wheel, the driving wheel drives the belt, the driven wheel is arranged on the other side of the support, and the belt drives the driven wheel; The knife mounting plate is connected to the belt through the belt pressing connecting block, and the cutting knife is fixed to the lower end of the knife mounting plate; The first proximity sensor and the second proximity sensor are respectively arranged on the left and right sides of the support and located between the driving wheel and the driven wheel; The cylinder is installed below the support, and the bag pressing plate is connected and fixed to the end of the guide rod of the cylinder; The first proximity sensor, the second proximity sensor, the motor, and the cylinder are electrically connected to the PLC controller.

2. The scraper bag-scraping mechanism according to claim 1, characterized in that: in, A slide rail is installed on the support, a slide platform is installed on the slide rail, and the knife mounting plate is also connected and fixed to the slide platform.

3. The scraper bag-scraping mechanism according to claim 1, characterized in that: in, There are two cylinders, which are respectively arranged on the left and right sides below the support and located between the driving wheel and the driven wheel.

4. The scraper bag-scraping mechanism according to claim 1, characterized in that: in, The lower end portion of the cutting knife is triangular.

5. A bag making device, characterized in that: include: Scraper bag-scraping mechanism, front bag-pressing mechanism, bottom bag-pressing mechanism, transmission mechanism, bottom support; Wherein, the scraper bag-scraping mechanism is arranged on the upper part of the frame, and the scraper bag-scraping mechanism is the scraper bag-scraping mechanism according to any one of claims 1 to 4; The transmission mechanism is arranged in the middle of the frame and includes a conveying roller for conveying the packaging bag and an output roller for outputting the packaging bag; The bottom support is arranged below the scraper bag-cutting mechanism and between the conveying roller and the output roller, and the bottom support has a groove for accommodating the cutting knife; The front bag pressing mechanism is located in front of the scraper bag cutting mechanism, and the lower bag pressing mechanism is located below the transmission mechanism.

6. The bag making device according to claim 5, Its characteristics are: Wherein, the transmission mechanism further includes: a first motor, a first belt, a first driving wheel, a first driven wheel, a second driven wheel, and a tensioning wheel; The first motor is mounted on the frame, the first motor drives the first driving wheel, and the first driving wheel is connected to the second belt; The first driven wheel, the second driven wheel, and the tensioning wheel are connected to the second belt; The conveying roller is connected to the first driven wheel via a shaft; The output roller is connected to the second driven wheel through a shaft.

7. The bag making device according to claim 5, characterized in that: in, The front bag pressing mechanism includes: a first cylinder, a pressing plate, a cylinder mounting plate, and a connecting plate; The connecting plate is fixed on the frame, the cylinder mounting plate is connected and fixed to the connecting plate, the first cylinder is mounted and fixed on the cylinder mounting plate, and the pressing plate is driven to rise and fall by the first cylinder.

8. The bag making device according to claim 5, Its characteristics are: The lower bag pressing mechanism includes: a fixed plate, a screw, a spring, a second cylinder, a bracket, a pressing roller, and a pressing roller mounting shaft; The support is driven to rise and fall by a second cylinder; The pressure roller mounting shaft is connected and fixed to the bracket and is located directly below the conveying roller; The fixing plate is connected and fixed to the second cylinder, the two screw rods are fixed to the fixing plate, the spring is arranged on the outer periphery of the upper end portion of the screw rod, and the top of the spring is connected and fixed to the bracket.

9. The bag making device according to claim 5, wherein: in, The upper end surface of the bottom support is provided with an anti-slip strip.

10. The bag making device according to claim 5, wherein: in, A slide groove is provided at the bottom of the frame.

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