Pneumatic sealing and cutting device

Abstract

The utility model relates to a pneumatic type sealing and cutting device, and relates to the technical field of packaging equipment, the pneumatic type sealing and cutting device comprises a rack, and the rack is provided with an upper sealing and cutting assembly and a lower sealing and cutting assembly; the upper sealing and cutting assembly comprises a transverse heat-sealing cutter and a longitudinal heat-sealing cutter perpendicularly fixed to one end of the transverse heat-sealing cutter. The lower sealing and cutting assembly comprises a transverse cutter holder located under the transverse heat-sealing cutter and a longitudinal cutter holder located under the longitudinal heat-sealing cutter. The transverse heat-sealing cutter and the longitudinal heat-sealing cutter can slide up and down in the height direction of the rack, and the rack is further provided with a driving assembly used for driving the transverse heat-sealing cutter and the longitudinal heat-sealing cutter to slide up and down. According to the packaging film sealing and cutting device, through installation of the transverse heat sealing cutter and the longitudinal heat sealing cutter, openings in the two sides of a packaging film are sealed and cut at the same time, the sealing and cutting process of the packaging film is simplified, the time consumed for sealing and cutting the two sides of the packaging film is shorter, and therefore the sealing and cutting efficiency of the packaging film is improved.

Description

Technical Field

[0001] The present application relates to the technical field of packaging equipment, and in particular to a pneumatic sealing and cutting device. Background Art

[0002] In order to facilitate the storage and transportation of packaging boxes, the packaging boxes need to be packaged and sealed, so as to achieve the purpose of anti-fouling and moisture-proof during transportation; in the current industrial assembly line, after the material is sealed with a plastic film bag, the opening of the packaged packaging film needs to be sealed and cut. The sealing and cutting machine is an automated equipment widely used in the packaging industry. Its main function is to wrap the product to be packaged with the packaging film, and then seal and cut the opening of the packaging film through the sealing system to complete the packaging process.

[0003] In the related art, a packaging film sealing and cutting device includes a base, on which are arranged a transverse sealing and cutting component, a first driving member for driving the transverse sealing and cutting component, a longitudinal cutting component and a second driving member for driving the longitudinal sealing and cutting component; after the packaging film has initially packaged a product to be packaged (such as a shoe box), there is a transverse opening on one side of the packaging film and a longitudinal opening on the other side; when the sealing and cutting device is used to seal and cut the two openings of the packaging film, the initially packaged product is first conveyed to the bottom of the transverse sealing and cutting device by a conveyor belt, and the transverse sealing and cutting device is driven by the first driving member to seal and cut the transverse opening of the packaging film; then the product is conveyed to the bottom of the longitudinal sealing and cutting component, and the longitudinal sealing and cutting component is driven by the second driving member to seal and cut the longitudinal opening of the packaging film.

[0004] In the above-mentioned related technologies, when sealing and cutting the two side openings of the packaging film (one horizontal side and one vertical side), it is necessary to seal and cut the horizontal opening first, and then seal and cut the vertical opening. The process is cumbersome and time-consuming, resulting in low overall sealing and cutting efficiency, and there is room for improvement. Utility Model Content

[0005] The purpose of the present application is to provide a pneumatic sealing and cutting device to solve the problem in the above-mentioned related technology that the two sides of the packaging film (one horizontal side and one vertical side) need to be processed step by step, the process is relatively cumbersome, and the overall sealing and cutting efficiency is low.

[0006] The pneumatic sealing and cutting device provided in this application adopts the following technical solution:

[0007] A pneumatic sealing and cutting device comprises a frame, on which an upper sealing and cutting assembly and a lower sealing and cutting assembly are arranged; the upper sealing and cutting assembly comprises a transverse heat sealing knife and a longitudinal heat sealing knife vertically fixed to one end of the transverse heat sealing knife, and the lower sealing and cutting assembly comprises a transverse knife seat located directly below the transverse heat sealing knife and a longitudinal knife seat located directly below the longitudinal heat sealing knife; the transverse heat sealing knife and the longitudinal heat sealing knife can slide up and down along the height direction of the frame, and the frame is also provided with a driving assembly for driving the transverse heat sealing knife and the longitudinal heat sealing knife to slide up and down.

[0008] By adopting the above technical solution, when the product packaged by the packaging film is conveyed to the frame, the driving component is started through the installation of the horizontal heat sealing knife and the longitudinal heat sealing knife, which can drive the horizontal heat sealing knife and the longitudinal heat sealing knife to slide up and down as a whole until the horizontal heat sealing knife and the horizontal knife seat, and the longitudinal heat sealing knife and the longitudinal knife seat are abutted; compared with the step-by-step sealing and cutting in the background technology, this setting can achieve simultaneous sealing and cutting of the openings on both sides of the packaging film, simplifying the sealing and cutting process of the packaging film, and taking less time to seal and cut both sides of the packaging film, thereby improving the sealing and cutting efficiency of the packaging film.

[0009] Optionally, the upper sealing and cutting assembly further includes an upper fixing frame for fixing the transverse heat sealing knife and the longitudinal heat sealing knife, and the lower sealing and cutting assembly further includes a lower fixing frame for fixing the transverse knife seat and the longitudinal knife seat.

[0010] By adopting the above technical scheme, in the process of fixing the horizontal heat sealing knife and the longitudinal heat sealing knife, the horizontal knife seat and the longitudinal knife seat, one horizontal heat sealing knife and one longitudinal heat sealing knife are fixed by the upper fixing frame, and the horizontal knife seat and the longitudinal knife seat are fixed by the lower fixing frame, so as to enhance the assembly stability of the horizontal heat sealing knife and the longitudinal heat sealing knife, the horizontal knife seat and the longitudinal knife seat, and reduce the possibility of assembly looseness when the horizontal heat sealing knife and the horizontal knife seat, and the longitudinal heat sealing knife and the longitudinal knife seat are abutted.

[0011] Optionally, a plurality of guide rods are arranged on the frame in the vertical direction, a first guide block is arranged on the outer side surface of the upper fixed frame, a first guide hole is formed on the first guide block for the guide rod to pass through, and a second guide block is arranged on the outer side surface of the lower fixed frame, a second guide hole is formed on the second guide block for the guide rod to pass through; the driving assembly can drive the lower fixed frame to reciprocate in the direction approaching the upper fixed frame, and the movement directions of the upper fixed frame and the lower fixed frame are opposite.

[0012] By adopting the above technical solution, due to the coordinated arrangement of the guide rod, the first guide block and the second guide block, the upper fixing frame and the lower fixing frame can slide along the length direction of the guide rod, and the driving assembly can drive the upper fixing frame and the lower fixing frame to slide. With this arrangement, the stroke of the horizontal heat sealing knife and the vertical heat sealing knife moving up and down is reduced, and only half of the original distance needs to be moved to achieve the sealing and cutting of the packaging film, thereby improving the efficiency of sealing and cutting the packaging film.

[0013] Optionally, the lower part of the frame is provided with a receiving platform located below the lower fixed frame and used to support the driving assembly, the driving assembly includes two rotating shafts rotatably connected to the receiving platform and a driving member for driving the rotating shafts to rotate, the rotating shafts can rotate around their own axes, and the length direction of the rotating shafts is parallel to the length direction of the cross knife seat; crank arms are fixedly provided at both ends of the rotating shaft, and the driving assembly also includes a long connecting rod hinged to the upper fixed frame and a short connecting rod hinged to the lower fixed frame, the end of the long connecting rod away from the upper fixed frame is hinged to one end of the crank arm, and the end of the short connecting rod away from the lower fixed frame is hinged to the other end of the crank arm.

[0014] By adopting the above technical solution, when the openings on both sides of the packaging film are sealed and cut, the starting driving member drives the two rotating shafts and the crank arms on the rotating shafts to rotate synchronously, and the rotation of the crank arms drives the long connecting rod and the short connecting rod to rotate, thereby driving the upper fixed frame and the lower fixed frame to move in a direction approaching each other until the horizontal heat sealing knife abuts against the horizontal knife seat, and the vertical heat sealing knife abuts against the vertical knife seat; thereby achieving the sealing and cutting of the openings on both sides of the packaging film.

[0015] Optionally, the driving member includes a cylinder and a first crank arm fixedly mounted on a rotating shaft, the telescopic rod of the cylinder is hinged to the end of the first crank arm, and the end of the cylinder away from the telescopic rod is hinged to a receiving platform; a second crank arm is provided on both rotating shafts, and the driving member also includes a transmission rod hinged to the ends of the two second crank arms respectively.

[0016] By adopting the above technical solution, when the driving member drives the two rotating shafts to rotate, the cylinder is started, and the telescopic rod on the cylinder is extended or shortened, which drives the rotating shaft hinged to the telescopic rod and the first crank arm on the rotating shaft to rotate synchronously. Due to the setting of the transmission rod, the rotation of the first crank arm is synchronously transmitted to the other rotating shaft through the transmission rod, thereby driving the synchronous rotation of the two rotating shafts to ensure the normal progress of the sealing and cutting process.

[0017] Optionally, a plurality of positioning rods are fixedly provided on the side surfaces of the transverse knife seat and the longitudinal knife seat close to the lower fixing frame, and the lower fixing frame is provided with positioning through holes for the positioning rods to pass through, and the outer circumference of the positioning rods is sleeved with compression springs in a compressed state.

[0018] By adopting the above technical scheme, when the packaging film is sealed and cut, the transverse heat sealing knife abuts against the transverse knife seat, and the longitudinal heat sealing knife abuts against the longitudinal knife seat. Through the coordinated arrangement of the positioning rod and the compression spring, the compression spring is further compressed. At the same time, the resilience of the compression spring squeezes the transverse knife seat and the longitudinal knife seat in the opposite direction, so that the transverse heat sealing knife abuts against the transverse knife seat, and the longitudinal heat sealing knife abuts against the longitudinal knife seat, thereby improving the sealing and cutting effect of the packaging film and making the sealing and cutting edges of the packaging film smoother.

[0019] Optionally, a clamping strip is fixedly provided on the side of both the horizontal blade seat and the vertical blade seat away from the lower fixing frame, and the clamping strip has a clamping groove along its length direction.

[0020] By adopting the above technical solution, due to the setting of the tightening strip, when the horizontal heat sealing knife and the vertical heat sealing knife seal and cut the packaging film, the tightening strip can prevent the packaging material from sticking to the horizontal knife seat and the vertical knife seat, thereby ensuring the accuracy and efficiency of cutting.

[0021] Optionally, both the horizontal blade seat and the vertical blade seat have grooves on their sides away from the lower fixing frame along their length direction for the tightening strip to be embedded and fixed.

[0022] By adopting the above technical solution, the installation and replacement of the tightening strip is facilitated due to the provision of the embedding groove, thereby improving the efficiency of disassembly and assembly of the tightening strip.

[0023] In summary, the present application includes at least one of the following beneficial technical effects:

[0024] 1. By installing the transverse heat sealing knife and the longitudinal heat sealing knife and starting the driving assembly, the transverse heat sealing knife and the longitudinal heat sealing knife can be driven to slide up and down as a whole until the transverse heat sealing knife abuts against the transverse knife seat and the longitudinal heat sealing knife abuts against the longitudinal knife seat, so as to achieve simultaneous sealing and cutting of the openings on both sides of the packaging film, simplify the sealing and cutting process of the packaging film, and take less time to seal and cut both sides of the packaging film, thereby improving the sealing and cutting efficiency of the packaging film. BRIEF DESCRIPTION OF THE DRAWINGS

[0025] In order to more clearly illustrate the technical solutions in the embodiments of the present application, the drawings required for use in the description of the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present application. For ordinary technicians in this field, other drawings can be obtained based on these drawings without creative work.

[0026] Figure 1 It is a schematic diagram of the overall structure of an embodiment of the present application;

[0027] Figure 2 It is a partial cross-sectional structural schematic diagram of the installation and cooperation of the upper sealing and cutting assembly and the lower sealing and cutting assembly in the embodiment of the present application;

[0028] Figure 3 yes Figure 2 A magnified schematic diagram of part A;

[0029] Figure 4 yes Figure 2 A magnified schematic diagram of part B;

[0030] Figure 5 It is a structural schematic diagram of the installation and coordination of the drive assembly according to an embodiment of the present application.

[0031] In the figure, 1, frame; 11, guide rod; 12, receiving platform; 2, upper sealing and cutting assembly; 21, horizontal heat sealing knife; 22, vertical heat sealing knife; 23, upper fixed frame; 231, first guide block; 3, lower sealing and cutting assembly; 31, horizontal knife seat; 32, vertical knife seat; 321, positioning rod; 322, compression spring; 323, embedded groove; 33, lower fixed frame; 331, second guide block; 332, positioning through hole; 34, tightening strip; 341, tightening groove; 4, driving assembly; 41, driving member; 411, cylinder; 412, first crank arm; 413, second crank arm; 414, transmission rod; 42, rotating shaft; 43, crank arm; 44, long connecting rod; 45, short connecting rod. DETAILED DESCRIPTION

[0032] The present application is further described in detail below in conjunction with all the accompanying drawings.

[0033] Example:

[0034] Reference Figure 1 , a pneumatic sealing and cutting device comprises a frame 1, on which an upper sealing and cutting assembly 2 and a lower sealing and cutting assembly 3 are arranged; the upper sealing and cutting assembly 2 comprises a horizontal heat sealing knife 21 and a longitudinal heat sealing knife 22 vertically fixed at one end of the horizontal heat sealing knife 21, and the lower sealing and cutting assembly 3 comprises a horizontal knife seat 31 located directly below the horizontal heat sealing knife 21 and a longitudinal knife seat 32 located directly below the longitudinal heat sealing knife 22; the horizontal heat sealing knife 21 and the longitudinal heat sealing knife 22 can slide up and down along the height direction of the frame 1, and the frame 1 is also provided with a driving assembly 4 for driving the horizontal heat sealing knife 21 and the longitudinal heat sealing knife 22 to slide up and down; when the product packaged by the packaging film is transported to the frame 1, the driving assembly 4 is started to drive the horizontal heat sealing knife 21 and the longitudinal heat sealing knife 22 to slide downward until the horizontal heat sealing knife 21 abuts against the horizontal knife seat 31 and the longitudinal heat sealing knife 22 abuts against the longitudinal knife seat 32, so as to achieve simultaneous sealing and cutting of the openings on both sides of the packaging film. The sealing and cutting device is mainly used for sealing and cutting express packaging bags (PE films).

[0035] Reference Figure 2 The upper sealing and cutting assembly 2 also includes an upper fixing frame 23 for fixing the transverse heat sealing knife 21 and the longitudinal heat sealing knife 22, and the lower sealing and cutting assembly 3 also includes a lower fixing frame 33 for fixing the transverse knife seat 31 and the longitudinal knife seat 32; after fixing, the transverse heat sealing knife 21 and the longitudinal heat sealing knife 22 are in the same plane, and the transverse knife seat 31 and the longitudinal knife seat 32 are in the same plane.

[0036] Reference Figure 2 and Figure 3The cam 322 is provided with a plurality of springs 329 for sealing the packaging film, and the springs 329 are provided with a plurality of springs 321 for sealing the packaging film.

[0037] Reference Figure 2 and Figure 4 The sides of the horizontal knife seat 31 and the vertical knife seat 32 away from the lower fixed frame 33 are both provided with a tightening strip 34, wherein the sides of the horizontal knife seat 31 and the vertical knife seat 32 away from the lower fixed frame 33 are both provided with an embedding groove 323 along their own length direction for the tightening strip 34 to be embedded and further fixed by glue; the tightening strip 34 is made of silicone material, and the tightening strip 34 is provided with a tightening groove 341 along its own length direction, and the cross-sectional shape of the tightening groove 341 is "V-shaped", so as to further improve the abutment stability between the horizontal heat sealing knife 21 and the horizontal knife seat 31, and the longitudinal heat sealing knife 22 and the longitudinal knife seat 32.

[0038] Reference Figure 5 Four guide rods 11 are fixedly arranged at the four corners of the frame 1 in the vertical direction, four first guide blocks 231 are relatively arranged on the outer side of the upper fixed frame 23, and four second guide blocks 331 are relatively arranged on the outer side of the lower fixed frame 33. The four first guide blocks 231 are coaxially arranged with the four second guide blocks 331, and the first guide blocks 231 are provided with first guide holes for the guide rods 11 to pass through, and the second guide blocks 331 are provided with second guide holes for the guide rods 11 to pass through; the driving assembly 4 can drive the lower fixed frame 33 to reciprocate in the direction close to the upper fixed frame 23, and the movement directions of the upper fixed frame 23 and the lower fixed frame 33 are opposite.

[0039] Reference Figure 5 The driving assembly 4 includes two rotating shafts 42 located below the lower fixed frame 33 and a driving member 41 for driving the rotating shafts 42 to rotate. The lower part of the frame 1 is provided with a receiving platform 12 for supporting the driving assembly 4. The rotating shaft 42 is rotatably connected to the upper side of the receiving platform 12. The rotating shaft 42 can rotate around its own axis. The length directions of the two rotating shafts 42 are parallel to the length direction of the cross knife seat 31.

[0040] Reference Figure 5, crank arms 43 are fixedly arranged at both ends of the rotating shaft 42, wherein the driving assembly 4 further comprises a long connecting rod 44 hinged to the upper fixing frame 23 and a short connecting rod 45 hinged to the lower fixing frame 33, the end of the long connecting rod 44 away from the upper fixing frame 23 is hinged to one end of the crank arm 43, and the end of the short connecting rod 45 away from the lower fixing frame 33 is hinged to the other end of the crank arm 43. The driving member 41 drives the rotating shaft 42 and the crank arm 43 to rotate synchronously, and the rotation of the crank arm 43 drives the long connecting rod 44 and the short connecting rod 45 to rotate, thereby driving the upper fixing frame 23 and the lower fixing frame 33 to move.

[0041] Reference Figure 5 The driving member 41 includes a cylinder 411 and a first crank arm 412 fixedly arranged on the rotating shaft 42. The telescopic rod of the cylinder 411 is hinged to the end of the first crank arm 412, and the end of the cylinder 411 away from the telescopic rod is hinged to the receiving platform 12; second crank arms 413 are provided on the two rotating shafts 42, and the driving member 41 also includes a transmission rod 414 hinged to the ends of the two second crank arms 413 respectively; starting the cylinder 411 causes the telescopic rod to extend and retract, thereby driving the first crank arm 412 to rotate around the axis of the rotating shaft 42, and driving the rotating shaft 42 to rotate synchronously.

[0042] The implementation principle of the embodiment of the present application is:

[0043] When the product packaged by the packaging film is conveyed to the frame 1, the cylinder 411 is started, the telescopic rod is extended and retracted, thereby driving the first crank arm 412 to rotate around the axis of the rotating shaft 42, and driving the rotating shaft 42 and the crank arm 43 to rotate synchronously. The rotation of the crank arm 43 drives the long connecting rod 44 and the short connecting rod 45 to rotate, thereby driving the upper fixed frame 23 and the lower fixed frame 33 to move; when the packaging film is sealed and cut, the upper fixed frame 23 moves downward and the lower fixed frame 33 moves upward until the horizontal heat sealing knife 21 is tightly against the horizontal knife seat 31, and the longitudinal heat sealing knife 22 is tightly against the longitudinal knife seat 32; when the packaging film is sealed and cut, the upper fixed frame 23 moves upward and the lower fixed frame 33 moves downward.

[0044] Unless otherwise defined, the terms or scientific terms used in this application should be understood by people with ordinary skills in the field to which this application belongs. The "first", "second", "third" and similar words used in this application do not indicate any order, quantity or importance, but are only used to distinguish different components. "One" or "one" and other similar words do not indicate a quantitative limit, but indicate that there is at least one. "Including" or "comprising" and other similar words mean that the elements or objects appearing in front of "including" or "comprising" cover the elements or objects listed after "including" or "comprising" and their equivalents, and do not exclude other elements or objects. "Up", "down", "left", "right" and the like are only used to indicate relative positional relationships. When the absolute position of the described object changes, the relative positional relationship may also change accordingly.

[0045] The embodiments of this specific implementation are all preferred embodiments of the present application, and are not intended to limit the protection scope of the present application. The same components are represented by the same figure marks. Therefore, any equivalent changes made based on the structure, shape, and principle of the present application should be included in the protection scope of the present application.

Claims

1. A pneumatic sealing and cutting device, comprising a frame (1), wherein an upper sealing and cutting assembly (2) and a lower sealing and cutting assembly (3) are arranged on the frame (1); It is characterized in that The upper sealing and cutting assembly (2) comprises a transverse heat sealing knife (21) and a longitudinal heat sealing knife (22) vertically fixed to one end of the transverse heat sealing knife (21), and the lower sealing and cutting assembly (3) comprises a transverse knife seat (31) located directly below the transverse heat sealing knife (21) and a longitudinal knife seat (32) located directly below the longitudinal heat sealing knife (22); the transverse heat sealing knife (21) and the longitudinal heat sealing knife (22) are capable of sliding up and down along the height direction of the frame (1), and the frame (1) is also provided with a driving assembly (4) for driving the transverse heat sealing knife (21) and the longitudinal heat sealing knife (22) to slide up and down.

2. A pneumatic sealing and cutting device according to claim 1, characterized in that: The upper sealing and cutting assembly (2) further comprises an upper fixing frame (23) for fixing the transverse heat sealing knife (21) and the longitudinal heat sealing knife (22), and the lower sealing and cutting assembly (3) further comprises a lower fixing frame (33) for fixing the transverse knife seat (31) and the longitudinal knife seat (32).

3. A pneumatic sealing and cutting device according to claim 2, characterized in that: A plurality of guide rods (11) are arranged on the frame (1) in the vertical direction; a first guide block (231) is arranged on the outer side surface of the upper fixed frame (23) in a relative manner; a first guide hole for the guide rod (11) to pass through is provided on the first guide block (231); a second guide block (331) is arranged on the outer side surface of the lower fixed frame (33) in a relative manner; a second guide hole for the guide rod (11) to pass through is provided on the second guide block (331); the driving assembly (4) can drive the lower fixed frame (33) to reciprocate in a direction close to the upper fixed frame (23); the upper fixed frame (23) and the lower fixed frame (33) move in opposite directions.

4. A pneumatic sealing and cutting device according to claim 3, characterized in that: The lower part of the frame (1) is provided with a receiving platform (12) located below the lower fixed frame (33) and used to support the driving assembly (4); the driving assembly (4) comprises two rotating shafts (42) rotatably connected to the receiving platform (12) and a driving member (41) used to drive the rotating shafts (42) to rotate; the rotating shafts (42) are capable of rotating around their own axes, and the length direction of the rotating shafts (42) is parallel to the length direction of the cross knife seat (31); Crank arms (43) are fixedly provided at both ends of the rotating shaft (42). The driving assembly (4) further comprises a long connecting rod (44) hinged to the upper fixing frame (23) and a short connecting rod (45) hinged to the lower fixing frame (33). The end of the long connecting rod (44) away from the upper fixing frame (23) is hinged to one end of the crank arm (43), and the end of the short connecting rod (45) away from the lower fixing frame (33) is hinged to the other end of the crank arm (43).

5. A pneumatic sealing and cutting device according to claim 4, characterized in that: The driving member (41) comprises a cylinder (411), a first crank arm (412) fixedly arranged on a rotating shaft (42), a telescopic rod of the cylinder (411) being hinged to the end of the first crank arm (412), and an end of the cylinder (411) away from the telescopic rod being hinged to a receiving platform (12); second crank arms (413) are respectively arranged on the two rotating shafts (42), and the driving member (41) further comprises a transmission rod (414) hinged to the ends of the two second crank arms (413).

6. The pneumatic sealing and cutting device according to claim 2, characterized in that: A plurality of positioning rods (321) are fixedly provided on the side surfaces of the transverse blade seat (31) and the longitudinal blade seat (32) close to the lower fixing frame (33); the lower fixing frame (33) is provided with positioning through holes (332) for the positioning rods (321) to pass through; and the outer peripheral surface of the positioning rod (321) is sleeved with a compression spring (322) in a compressed state.

7. A pneumatic sealing and cutting device according to claim 6, characterized in that: The side surfaces of the transverse blade seat (31) and the longitudinal blade seat (32) away from the lower fixing frame (33) are both fixedly provided with a tightening strip (34), and the tightening strip (34) is provided with a tightening groove (341) along its length direction.

8. The pneumatic sealing and cutting device according to claim 7, characterized in that: The side surfaces of the transverse blade seat (31) and the longitudinal blade seat (32) away from the lower fixing frame (33) are both provided with an embedding groove (323) along their length direction for embedding and fixing the tightening strip (34).

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