Multi-column carton punching mechanism

Abstract

A multi-column carton punching mechanism comprises a follow-up lifting assembly, a mounting frame, a first cutter assembly, a second cutter assembly and a cutter driving assembly, the first cutter assembly and the second cutter assembly are oppositely mounted on the mounting frame, and the mounting frame is driven by the follow-up lifting assembly to ascend and descend. The cutter driving assembly comprises a first driving motor, a ball spline structure and a connecting rod structure, the ball spline structure comprises a spline shaft and an outer cylinder sleeve part, the spline shaft is vertically arranged, the mounting frame is mounted on the outer cylinder sleeve part, and the first driving motor is in driving connection with the spline shaft; and the outer cylinder suite is connected with at least one of the first cutter frame and the second cutter frame through a connecting rod structure and drives at least one of the first cutter frame and the second cutter frame to linearly move. According to the utility model, the weight load of the follow-up part of the cutter can be greatly reduced, the production efficiency is high, the punching force is large, the stress of each cutter is uniform, the punching device is suitable for punching multiple rows of strip packages, the overall structure is reasonable and compact, and the layout is convenient.

Description

Technical Field

[0001] The utility model relates to the technical field of packaging equipment, in particular to a multi-column strip package punching and cutting mechanism. Background Art

[0002] The strip packing machine is mainly used for packaging granular, powdery and liquid materials. Its main processes include conveying packaging film, strip package forming, sealing of longitudinal edges of strip packages, sealing of transverse edges of strip packages, filling of materials, division of strip packages, cutting of tear notches and rejection of defective products, etc. The strip packing machine can package single-column strip packages at a time, or produce multi-column strip packages at a time. The multi-column strip packing machine is suitable for the production of strip packages with small volume. When packaging multi-column strip packages simultaneously, it is necessary to consider the uniformity of the force on each strip package to avoid various problems caused by uneven force, such as excessive force on the strip packages at the edge part and too little force on the strip packages in the middle part. For the punching and cutting mechanism of multi-column strip packages, it is mainly used to cut each column of strip packages into single-strip packages, and can cut tear notches at the edges of the strip packages according to needs. The common punching and cutting mechanisms are often fixedly arranged, and the strip packages need to stay at the punching and cutting position, which greatly reduces the production efficiency. Moreover, the accumulation of strip packages will occur during the stay, resulting in phenomena such as bending of strip packages, irregular arrangement, and pulling of strip packages, affecting the position positioning of punching and cutting and the quality of the final product. At the same time, if the force on each column of strip packages is uneven during the punching and cutting process, some cutting tools will be severely worn due to excessive force, while some cutting tools cannot be completely cut due to insufficient force, resulting in problems such as the adhesion of the front and rear strip packages and poor cutting quality. Summary of the Utility Model

[0003] The purpose of the utility model is to overcome the above-mentioned disadvantages of the prior art and provide a multi-column strip package punching and cutting mechanism that can perform follow-up cutting with uniform cutting force.

[0004] The utility model is realized by the following technical solutions:

[0005] A multi-column strip package punching mechanism, comprising a frame, a follower lifting assembly, a mounting frame, a first cutter assembly, a second cutter assembly and a cutter driving assembly. The follower lifting assembly is mounted on the frame. The first cutter assembly and the second cutter assembly are oppositely mounted on the mounting frame. The mounting frame is connected to the follower lifting assembly. The mounting frame is driven by the follower lifting assembly to lift and lower along the frame, driving the first cutter assembly and the second cutter assembly to lift and lower together to keep in sync with other components on the strip packing machine and follow the strip packing belt, and cut the strip package during the descending process. The first cutter assembly includes a first cutter holder and a plurality of first cutters arranged side by side on the first cutter holder. The second cutter assembly includes a second cutter holder and a plurality of second cutters arranged side by side on the second cutter holder. The cutter driving assembly includes a first driving motor, a ball spline structure and a connecting rod structure. The first driving motor is mounted on the frame. The ball spline structure includes a spline shaft and an outer cylinder kit sleeved on the spline shaft that can perform linear and rotational motions. The spline shaft is vertically arranged on the frame. The mounting frame is mounted on the outer cylinder kit. The first driving motor is drivingly connected to the spline shaft to drive the spline shaft to rotate. While driving the outer cylinder kit to rotate, the outer cylinder kit and the mounting frame can lift and lower along the spline shaft. The first cutter holder and the second cutter holder are oppositely arranged. The number of the first cutters is equal to that of the second cutters, and their positions are in one-to-one correspondence. The outer cylinder kit is connected to at least one of the first cutter holder and the second cutter holder through the connecting rod structure. The rotation of the outer cylinder kit drives at least one of the first cutter holder and the second cutter holder to move linearly through the connecting rod structure, so that the first cutter holder and the second cutter holder approach or move away from each other, thereby making the first cutters and the second cutters approach each other to punch the strip package.

[0006] Further, a guiding hole is provided on the mounting frame. A guiding rod is inserted into the guiding hole. The guiding rod can slide along the guiding hole. Both ends of the guiding rod extend out of the guiding hole, which are respectively the first end and the second end. The first cutter holder is fixed to the first end of the guiding rod. The second cutter holder is slidably mounted on the guiding rod and is located between the mounting frame and the first cutter holder. A linkage frame is fixed to the second end of the guiding rod. The connecting rod structure includes a first connecting rod structure and a second connecting rod structure. The outer cylinder kit is connected to the second cutter holder through the second connecting rod structure. The outer cylinder kit is connected to the linkage frame through the first connecting rod structure. The linkage frame pushes the first cutter holder to move through the guiding rod.

[0007] Further, the first link structure includes a first link and a second link. One end of the first link is fixedly connected to the outer cylinder kit, and the other end is hinged to one end of the second link. The other end of the second link is hinged to the linkage frame. The second link structure includes a third link and a fourth link. One end of the third link is fixedly connected to the outer cylinder kit, and the other end is hinged to one end of the fourth link. The other end of the fourth link is hinged to the second cutter holder. The first link and the third link are located on a straight line.

[0008] Further, the first drive motor is drivingly connected to the spline shaft through a third link structure. The third link structure includes a fifth link and a sixth link. One end of the fifth link is connected to the first drive motor, and the other end is hinged to one end of the sixth link. The other end of the sixth link is fixedly connected to the spline shaft.

[0009] Further, the first cutter is mounted on the first cutter holder through a first cutter seat. The first cutter has a convex edge, and both the upper and lower edges of the convex edge are blade structures. The second cutter is mounted on the second cutter holder through a second cutter seat. The second cutter includes two blades arranged up and down, and the two blades cooperate with the blade structures on the first cutter to cut two adjacent strip packages from the connection.

[0010] Further, the two blades on the second cutter are arranged obliquely on the second cutter seat, and the two blades gradually approach each other in the direction of the first cutter until there is a slit between the two blades, so that the waste edge after cutting can slide down along the inclined surface after entering the slit, avoiding the residue and blockage of the waste edge.

[0011] Further, a guiding strip is provided on the first cutter seat, and a guiding groove adapted to the guiding strip is provided on the second cutter seat. The second cutter is positioned and cooperated with the first cutter through the cooperation of the guiding groove and the guiding strip, avoiding the position deviation when the two cutters cooperate.

[0012] Further, a tear-open blade is also provided on the first cutter seat, and a tear-open blade groove adapted to the tear-open blade is provided on the second cutter seat. When the first cutter and the second cutter cooperate for cutting, the tear-open blade and the tear-open blade groove cooperate to cut a tear-open on the edge of the strip package.

[0013] Further, it further includes a bag supporting component for fixing the strip package to facilitate punching. The bag supporting component includes two relatively arranged bag supporting plates. The two bag supporting plates are respectively connected to the first cutter holder and the second cutter holder through elastic members, and the two bag supporting plates are opposite in position. The strip package is located between the two bag supporting plates. When the first cutter holder and the second cutter holder approach each other, the two bag supporting plates also approach each other and pre-fix the middle part of the strip package under the action of the elastic members. The elastic member includes a spring.

[0014] Further, the follow-up lifting component includes a second servo motor, a transmission shaft, a driving wheel, a driven wheel and a toothed belt. The second servo motor is installed on the frame. The transmission shaft is horizontally installed on the frame. The second servo motor is in transmission connection with the transmission shaft. The driving wheel is installed on the transmission shaft and rotates with the transmission shaft. The toothed belt is wound around the driving wheel and the driven wheel in the vertical direction. The mounting bracket is fixed on the toothed belt. The second servo motor drives the driving wheel to rotate through the transmission shaft, and the driving wheel drives the toothed belt to move, so as to drive the mounting bracket and the first cutter assembly and the second cutter assembly thereon to lift, so as to facilitate the follow-up cutting of the strip package. A slider is further arranged on the mounting bracket, and a slide rail is correspondingly arranged on the frame. The mounting bracket can be lifted along the frame through the cooperation of the slider and the slide rail.

[0015] Further, there are two groups of cutter driving components arranged in parallel, and the first cutter assembly and the second cutter assembly are jointly driven by the two groups of cutter driving components to synchronously link.

[0016] The utility model improves the production efficiency by setting a follow-up lifting component, which enables the cutter part to lift follow-up, and the strip package is slit during the descending process. Compared with the way that the strip package needs to stay at the slitting position for slitting, it also avoids problems such as uneven arrangement of strip packages, inaccurate slitting positions, and pulling of strip packages caused by static stay; the ball spline structure is adopted to drive the cutter part, so that the servo drive part can be installed outside the cutter follow-up part, and drive components such as servo motors do not need to lift with the cutter part, greatly reducing the weight load of the cutter follow-up part, reducing the energy load and equipment cost; the cutter drive component drives the two cutters to move synchronously and approach each other through a two-link structure. Compared with the way of one fixed cutter and one moving cutter, the punching force during punching can be increased, and the punching effect can be improved. The setting of unique structures such as the two links, linkage frame, guide rod, and two groups of punching drives makes the force on each cutter on the two tool holders more uniform, avoiding various problems caused by uneven force on each cutter, such as incomplete punching due to insufficient force on some strip packages, still adhesion between strip packages, waste edges still adhering to the strip packages, and some cutters being severely worn due to excessive impact force, which is suitable for punching of multi-column strip packages; by setting a strip package fixing component, the strip package is fixed before punching, avoiding phenomena such as inaccurate slitting positions caused by strip package shaking, and further improving the slitting quality; the setting of the follow-up drive structure and the cutter drive structure makes the overall structure reasonable and compact, facilitating installation and operation on the strip packaging machine. Brief Description of the Drawings

[0017] Figure 1 It is a schematic structural diagram of an embodiment of the utility model.

[0018] Figure 2 It is a front structural schematic diagram of an embodiment of the utility model.

[0019] Figure 3 It is Figure 2 a cross-sectional view taken along the A-A direction in

[0020] Figure 4 It is a partial structural schematic diagram of an embodiment of the utility model.

[0021] Figure 5 It is a partial structural schematic diagram of the cutter drive component in an embodiment of the utility model.

[0022] Figure 6 It is a partial structural schematic diagram of an embodiment of the utility model.

[0023] Figure 7 It is a cross-sectional view of the cutter part and the strip package fixing component in an embodiment of the utility model.

[0024] Figure 8 It is a structural schematic diagram of the first cutter and the second cutter in an embodiment of the utility model.

[0025] Figure 9 This is a top view schematic diagram of the first cutter and the second cutter in the embodiment of the present utility model.

[0026] Figure 10 This is a side view schematic diagram of the first cutter and the second cutter in the embodiment of the present utility model.

[0027] Figure 11 This is a front view schematic diagram of the first cutter and the second cutter in the embodiment of the present utility model.

[0028] Figure 12 It is Figure 10 a cross-sectional view in the B-B direction in

[0029] Reference numerals: 1 - follower lifting assembly; 2 - mounting frame; 3 - first cutter assembly; 4 - second cutter assembly; 5 - cutter drive assembly; 6 - bag supporting assembly; 11 - frame; 12 - second servo motor; 13 - transmission shaft; 14 - driving wheel; 15 - toothed belt; 16 - driven wheel; 17 - slider; 31 - first cutter holder; 32 - first cutter; 41 - second cutter holder; 42 - second cutter; 321 - first cutter seat; 322 - convex edge; 323 - guiding strip; 324 - tear-open blade; 421 - second cutter seat; 422 - blade; 423 - guiding groove; 424 - tear-open knife groove; 425 - slit; 51 - first driving motor; 52 - spline shaft; 53 - outer cylinder kit; 54 - first link structure; 55 - second link structure; 56 - linkage frame; 57 - guiding rod; 58 - third link structure; 541 - first link; 542 - second link; 551 - third link; 552 - fourth link; 581 - fifth link; 582 - sixth link; 61 - bag supporting plate; 62 - elastic member. Detailed implementation manners

[0030] A multi-column strip package punching and cutting mechanism can be used in a strip packaging machine, such as Figures 1 to 3 , which mainly includes a frame 11, a follower lifting assembly 1, a mounting frame 2, a first cutter assembly 3, a second cutter assembly 4, a cutter drive assembly 5 and a bag supporting assembly 6. The follower lifting assembly 1 is installed on the frame 11. The first cutter assembly 3 and the second cutter assembly 4 are oppositely installed on the mounting frame 2. The mounting frame 2 is connected to the follower lifting assembly 1. The mounting frame 2 is driven by the follower lifting assembly 1 to lift and lower along the frame 11, driving the first cutter assembly 3 and the second cutter assembly 4 to lift and lower together, so as to keep in sync with other components on the strip packaging machine and follow the strip packaging belt, and cut the strip package during the descending process. Following the movement to cut the strip package can avoid pulling the strip package, or the strip packaging belt being deformed and distorted due to accumulation, resulting in inaccurate and uneven cutting positions.

[0031] Such as Figure 4, the first cutter assembly 3 includes a first cutter holder 31 and a plurality of first cutters 32 arranged side by side on the first cutter holder 31. The second cutter assembly 4 includes a second cutter holder 41 and a plurality of second cutters 42 arranged side by side on the second cutter holder 41. The cutter driving assembly 5 includes a first driving motor 51, a ball spline structure, and a connecting rod structure. The first driving motor 51 is installed on the frame 11. The ball spline structure includes a spline shaft 52 and an outer cylinder kit 53 sleeved on the spline shaft 52 that can perform linear and rotational movements. The ball spline structure is a conventional component and can be commercially available. Its structure and principle will not be elaborated here. In this embodiment, the spline shaft 52 is vertically arranged on the frame 11, the mounting bracket 2 is installed on the outer cylinder kit 53, and the first driving motor 51 is drivingly connected to the spline shaft 52 to drive the spline shaft 52 to rotate. Thus, while driving the outer cylinder kit 53 to rotate, the outer cylinder kit 53 and the mounting bracket 2 can move up and down along the spline shaft 52. The first cutter holder 31 and the second cutter holder 41 are arranged opposite to each other. The number of the first cutters 32 is equal to that of the second cutters 42, and their positions are in one-to-one correspondence. The outer cylinder kit 53 is connected to at least one of the first cutter holder 31 and the second cutter holder 41 through the connecting rod structure. The rotation of the outer cylinder kit 53 drives at least one of the first cutter holder 31 and the second cutter holder 41 to move linearly through the connecting rod structure, so that the first cutter holder 31 and the second cutter holder 41 approach or move away from each other, thereby making the first cutters 32 and the second cutters 42 approach each other to punch the strip package. The bag supporting assembly 6 is mainly used to fix the strip package before the strip package is divided to avoid the shaking of the strip package during cutting.

[0032] The ball spline structure enables the first driving motor 51 to be fixedly installed on the frame 11 instead of on the mounting bracket 2. Only through the spline shaft 52 can the power be transmitted to drive the first cutter assembly 3 and the second cutter assembly 4 to perform cutting. At the same time, it enables the mounting bracket 2 to drive the first cutter assembly 3 and the second cutter assembly 4 to move up and down followingly. The way of placing the first driving motor 51 outside can greatly reduce the load weight of the mounting bracket 2 and can easily achieve following movement. In this embodiment, two sets of the cutter driving assemblies 5 are arranged in parallel, and the two sets of cutter driving assemblies 5 jointly drive the synchronous linkage of the first cutter assembly 3 and the second cutter assembly 4 to adapt to the equipment with a large number of strip packages, so as to make the force evenly distributed. In this embodiment, the strip packages are arranged in 12 rows side by side. By adopting the above ball spline structure as the driving component of the cutter driving assembly 5, both of the two first driving motors 51 can be arranged outside the mounting bracket 2, further reducing the lifting load. The mounting bracket 2, the first cutter holder 31, and the second cutter holder 41 in this embodiment are all provided with a hollow structure to further reduce the overall lifting weight. The hollow holes can also be used for the falling of the cutting waste edges. A waste belt is arranged below, and the falling waste edges fall on the waste belt and are discharged.

[0033] For the cutter driving assembly 5, the outer cylinder kit 53 is connected to at least one of the first cutter holder 31 and the second cutter holder through the connecting rod structure, so that at least one of the two cutter holders moves linearly. In this way, the two cutter holders can approach or move away from each other. That is, it can be only connected to the first cutter holder 31 to drive the first cutter holder 31 to move linearly, or only connected to the second cutter holder 41 to drive the second cutter holder 41 to move linearly, or it can be connected to both the first cutter holder 31 and the second cutter holder at the same time to drive both of them to move simultaneously.

[0034] In this embodiment, in order to improve the driving effect, the cutter driving assembly 5 drives the first cutter holder 31 and the second cutter holder to synchronously interlock. The specific structure is as follows Figure 4 , a guiding hole is provided on the mounting frame 2, and a guiding rod 57 is inserted (through a linear bearing) into the guiding hole. The guiding rod 57 can slide along the guiding hole. Both ends of the guiding rod 57 extend out of the guiding hole, which are the first end and the second end respectively. The first cutter holder 31 is fixed to the first end of the guiding rod 57. The second cutter holder 41 is slidably mounted on the guiding rod 57 and is located between the mounting frame 2 and the first cutter holder 31. A linkage frame 56 is fixed to the second end of the guiding rod 57. The connecting rod structure includes a first connecting rod structure 54 and a second connecting rod structure 55. The outer cylinder kit 53 is connected to the second cutter holder 41 through the second connecting rod structure 55, and the outer cylinder kit 53 is connected to the linkage frame 56 through the first connecting rod structure 54. The linkage frame 56 pushes the first cutter holder 31 to move through the guiding rod 57. Such a structure enables the two cutter assemblies to be synchronously driven by the same driving assembly, and the two cutters can be synchronously interlocked and coordinated, which can improve the driving efficiency. At the same time, the two cutter assemblies can be located on the same side of the driving assembly, avoiding problems such as strip package avoidance problems and large structure caused by the driving assembly being located above and below or at both ends of the two cutter assemblies. In this embodiment, there are two parallel guiding rods 57, which respectively pass through both ends of the mounting frame 2. The two cutter driving assemblies 5 are located at the middle position of the mounting frame 2, which can improve the running stability and the structure is compact.

[0035] As one of the implementation manners, as Figure 5, the first link structure 54 includes a first link 541 and a second link 542. One end of the first link 541 is fixedly connected to the outer cylinder kit 53, and the other end is hinged to one end of the second link 542. The other end of the second link 542 is hinged to the linkage frame 56. The second link structure 55 includes a third link 551 and a fourth link 552. One end of the third link 551 is fixedly connected to the outer cylinder kit 53, and the other end is hinged to one end of the fourth link 552. The other end of the fourth link 552 is hinged to the second cutter holder 41. The first link 541 and the third link 551 are located on a straight line, that is, the first link 541 and the third link 551 are respectively arranged on opposite sides of the outer cylinder kit 53. Such a driving structure can make the second cutter holder 41 and the linkage frame 56 approach or move away from each other. The linkage frame 56 and the first cutter holder 31 are rigidly connected by a guide rod 57, and their movement directions are the same. However, since the linkage frame 56 and the first cutter holder 31 are respectively located on both sides of the second cutter holder 41, when the second cutter holder 41 and the linkage frame 56 approach each other, the second cutter holder 41 and the first cutter holder 31 move away from each other, and vice versa.

[0036] Since the linear movement distances of the second cutter holder 41 and the first cutter holder 31 are not too large, the rotation amplitude of the spline shaft 52 is not very large and is in a swinging state. Therefore, in this embodiment, as Figure 2 , Figure 6 , the first driving motor 51 is drivingly connected to the spline shaft 52 through a third link structure 58. Compared with the way of directly connecting the first driving motor 51 to the spline shaft 52, the spatial layout can be more reasonable. Two first driving motors 51 can be vertically arranged beside the frame 11, and the driving motors on the follow-up lifting assembly 1 are horizontally arranged. Specifically, the third link structure 58 includes a fifth link 581 and a sixth link 582. One end of the fifth link 581 is connected to the first driving motor 51, and the other end is hinged to one end of the sixth link 582. The other end of the sixth link 582 is fixedly connected to the spline shaft 52.

[0037] The function of the follow-up lifting assembly 1 is to drive the mounting bracket 2 to lift, and it can be a structure of a servo motor driving a lead screw. To further reasonably layout the space, the follow-up lifting assembly 1 in this embodiment is in the form of a servo motor driving a synchronous belt. Specifically, as Figure 2 , Figure 3 , Figure 6, the follow-up lifting assembly 1 includes a second servo motor 12, a transmission shaft 13, a driving wheel 14, a driven wheel 16 and a toothed belt 15. The second servo motor 12 is installed on the frame 11. The transmission shaft 13 is horizontally installed on the frame 11. The second servo motor 12 is in transmission connection with the transmission shaft 13. The driving wheel 14 is installed on the transmission shaft 13 and rotates with the transmission shaft 13. The driven wheel 16 is rotatably installed above the driving wheel 14. The toothed belt 15 is wound around the driving wheel 14 and the driven wheel 16. The mounting bracket 2 is fixed on the toothed belt 15. The second servo motor 12 drives the driving wheel 14 to rotate through the transmission shaft 13. The driving wheel 14 drives the toothed belt 15 to move, thereby driving the mounting bracket 2 and the first cutting knife assembly 3 and the second cutting knife assembly 4 thereon to lift, so as to facilitate the follow-up cutting of the strip package. A slider 17 is further provided on the mounting bracket 2, and a slide rail is correspondingly provided on the frame 11. The mounting bracket 2 can be lifted along the frame 11 through the cooperation of the slider 17 and the slide rail.

[0038] As one of the implementation manners, such as Figures 7 to 12 , the first cutting knife 32 is installed on the first cutting knife holder 31 through the first cutting knife seat 321. The first cutting knife 32 has a convex edge 322, and the upper and lower edges of the convex edge 322 are both blade structures. The second cutting knife 42 is installed on the second cutting knife holder 41 through the second cutting knife seat 421. The second cutting knife 42 includes two blades 422 arranged up and down. The two blades 422 cooperate with the blade structures on the first cutting knife 32 to cut off two adjacent strip packages from the connection part. The upper blade 422 and the blade cut the bottom of the upper strip package, and the lower blade and the blade 422 cut the top of the lower strip package.

[0039] In this embodiment, such as Figure 11 , the two blades 422 on the second cutting knife 42 are arranged obliquely on the second cutting knife seat 421, and the two blades 422 gradually approach each other in the direction of the first cutting knife 32 until a slit 425 is formed between the two blades 422, so that the waste edges after cutting can slide down along the inclined surface after entering through the slit 425, avoiding the waste edges from being blocked at the cutting place. A guiding strip 323 is provided on the first cutting knife seat 321. The guiding strip 323 can be integrally provided with the first cutting knife seat 321. A guiding groove 423 adapted to the guiding strip 323 is provided on the second cutting knife seat 421. The second cutting knife 42 is positioned and cooperated with the first cutting knife 32 through the cooperation of the guiding groove 423 and the guiding strip 323, avoiding position deviation when the two cutting knives are cooperated.

[0040] For some strip packages that also need to be provided with tear openings, a tear opening blade 324 is further provided on the first cutter seat 321, and a tear opening cutter groove 424 adapted to the tear opening blade 324 is provided on the second cutter seat 421. When the first cutter 32 and the second cutter 42 cooperate for cutting, the tear opening blade 324 and the tear opening cutter groove 424 cooperate with each other to cut out a tear opening at the edge of the strip package.

[0041] The package supporting assembly 6 is mainly used to fix the strip package for punching and cutting, such as Figure 4 , Figure 7 , the package supporting assembly 6 includes two oppositely arranged package supporting plates 61. The two package supporting plates 61 are respectively connected to the first cutter holder 31 and the second cutter holder 41 through elastic members 62, and the two package supporting plates 61 are opposite in position. The strip package is located between the two package supporting plates 61. When the first cutter holder 31 and the second cutter holder 41 approach each other, the two package supporting plates 61 also approach each other and pre-fix the middle part of the strip package under the action of the elastic members 62. The elastic members 62 include springs.

[0042] The above detailed description is a specific description of the feasible embodiments of the present invention. These embodiments are not intended to limit the patent scope of the present invention. Any equivalent implementation or modification without departing from the present invention shall be included in the patent scope of this case.

Claims

1. A multi-column strip package punching mechanism, characterized in that, It includes a frame, a follow-up lifting assembly, a mounting frame, a first cutter assembly, a second cutter assembly and a cutter driving assembly. The follow-up lifting assembly is mounted on the frame. The first cutter assembly and the second cutter assembly are oppositely mounted on the mounting frame. The mounting frame is connected to the follow-up lifting assembly. Driven by the follow-up lifting assembly, the mounting frame moves up and down along the frame, driving the first cutter assembly and the second cutter assembly to move up and down together. The first cutter assembly includes a first cutter holder and a plurality of first cutters arranged side by side on the first cutter holder. The second cutter assembly includes a second cutter holder and a plurality of second cutters arranged side by side on the second cutter holder. The cutter driving assembly includes a first driving motor, a ball spline structure and a connecting rod structure. The first driving motor is mounted on the frame. The ball spline structure includes a spline shaft and an outer cylinder kit sleeved on the spline shaft that can perform linear motion and rotational motion. The spline shaft is vertically arranged on the frame. The outer cylinder kit is mounted on the mounting frame. The first driving motor is drivingly connected to the spline shaft to drive the spline shaft to rotate. While driving the outer cylinder kit to rotate, the outer cylinder kit and the mounting frame can move up and down along the spline shaft. The first cutter holder and the second cutter holder are oppositely arranged. The number of the first cutters is equal to that of the second cutters, and the positions are one-to-one corresponding so that the first cutters and the second cutters can cooperate with each other to punch the strip package. The outer cylinder kit is connected to at least one of the first cutter holder and the second cutter holder through the connecting rod structure. The rotation of the outer cylinder kit drives at least one of the first cutter holder and the second cutter holder to move linearly through the connecting rod structure, so that the first cutter holder and the second cutter holder approach or move away from each other.

2. The multi-column strip package punching mechanism according to claim 1, characterized in that, A guiding hole is provided on the mounting frame. A guiding rod is inserted into the guiding hole. The guiding rod can slide along the guiding hole. Both ends of the guiding rod extend out of the guiding hole, which are respectively the first end and the second end. The first cutter holder is fixed on the first end of the guiding rod. The second cutter holder is slidably mounted on the guiding rod and is located between the mounting frame and the first cutter holder. A linkage frame is fixed on the second end of the guiding rod. The connecting rod structure includes a first connecting rod structure and a second connecting rod structure. The outer cylinder kit is connected to the second cutter holder through the second connecting rod structure. The outer cylinder kit is connected to the linkage frame through the first connecting rod structure. The linkage frame drives the first cutter holder to move through the guiding rod.

3. A multi-column strip package punching mechanism according to claim 2, characterized in that, The first connecting rod structure includes a first connecting rod and a second connecting rod. One end of the first connecting rod is fixedly connected to the outer cylinder kit, and the other end is hinged to one end of the second connecting rod. The other end of the second connecting rod is hinged to the linkage frame. The second connecting rod structure includes a third connecting rod and a fourth connecting rod. One end of the third connecting rod is fixedly connected to the outer cylinder kit, and the other end is hinged to one end of the fourth connecting rod. The other end of the fourth connecting rod is hinged to the second cutter holder. The first connecting rod and the third connecting rod are on a straight line.

4. A multi-column strip package punching mechanism according to claim 1, characterized in that, The first driving motor is drivingly connected to the spline shaft through a third link structure. The third link structure includes a fifth link and a sixth link. One end of the fifth link is connected to the first driving motor, and the other end is hinged to one end of the sixth link. The other end of the sixth link is fixedly connected to the spline shaft.

5. A multi-column strip packaging punching mechanism according to claim 1, characterized in that, The first cutter is mounted on the first cutter holder through a first cutter seat. The first cutter has a convex edge, and both the upper and lower edges of the convex edge are blade structures. The second cutter is mounted on the second cutter holder through a second cutter seat. The second cutter includes two blades arranged vertically, and the two blades cooperate with the blade structures on the first cutter to cut off two adjacent strip packages from the connection.

6. The multi-column strip package punching mechanism according to claim 5, characterized in that, The two blades on the second cutter are arranged obliquely on the second cutter seat, and the two blades gradually approach each other in the direction of the first cutter until a slit is formed between the two blades, so that the waste edge after cutting can slide down along the inclined surface after entering the slit.

7. A multi-column strip package punching mechanism according to claim 5, characterized in that, A guiding strip is provided on the first cutter seat, and a guiding groove adapted to the guiding strip is provided on the second cutter seat. The second cutter is positioned and cooperated with the first cutter through the cooperation of the guiding groove and the guiding strip.

8. A multi-column strip packaging punching mechanism according to claim 5, characterized in that, An easy-tear blade is further provided on the first cutter seat, and an easy-tear blade groove adapted to the easy-tear blade is provided on the second cutter seat. When the first cutter and the second cutter cooperate for cutting, the easy-tear blade and the easy-tear blade groove cooperate to cut an easy-tear opening at the edge of the strip package.

9. A multi-column strip package punching mechanism according to claim 1, characterized in that, It further includes a strip package fixing component for fixing the strip package to facilitate punching. The strip package fixing component includes two oppositely arranged strip package fixing plates. The two strip package fixing plates are respectively connected to the first cutter holder and the second cutter holder through elastic members, and the two strip package fixing plates are opposite in position. The strip package is located between the two strip package fixing plates. When the first cutter holder and the second cutter holder approach each other, the two strip package fixing plates also approach each other and pre-fix the middle part of the strip package under the action of the elastic members. The elastic members include springs.

10. A multi-column strip package punching mechanism according to claim 1, characterized in that, The follow-up lifting component includes a second servo motor, a transmission shaft, a driving wheel, a driven wheel and a toothed belt. The second servo motor is mounted on the machine frame. The transmission shaft is horizontally mounted on the machine frame. The second servo motor is drivingly connected to the transmission shaft. The driving wheel is mounted on the transmission shaft and rotates with the transmission shaft. The toothed belt is wound around the driving wheel and the driven wheel in the vertical direction. The mounting frame is fixed on the toothed belt. The second servo motor drives the driving wheel to rotate through the transmission shaft, and the driving wheel drives the toothed belt to move, thereby driving the mounting frame and the first cutter assembly and the second cutter assembly thereon to lift. A slider is further provided on the mounting frame, and a slide rail adapted to the slider is provided on the machine frame. The mounting frame lifts along the machine frame through the cooperation of the slider and the slide rail.

Images