A cutting device and a packer

Abstract

A cutting device and a packer, comprising a movable cutter, a shearing driving mechanism, a fixed cutter and a position adjusting mechanism. A first blade of the movable cutter extends along a first direction, and the movable cutter is installed on the shearing driving mechanism and reciprocates along a second direction under the driving of the shearing driving mechanism, the second direction being perpendicular to the first direction. A second blade of the fixed cutter extends along the first direction, and the second blade is arranged on the moving path of the first blade and is staggered with the first blade in the thickness direction of the fixed cutter. The first blade and the second blade are sawtooth-shaped in the thickness direction, and the sawtooth of the first blade and the sawtooth of the second blade are in a complementary position. Among the first blade and the second blade, the shape of one sawtooth is a triangle, and the shape of the other sawtooth is a trapezoid. The position adjusting mechanism adjusts the position of the first blade and the second blade when the first blade moves toward the second blade to a turning position, so that the edge part or the whole of the triangular sawtooth exceeds the outer edge of the trapezoidal sawtooth.

Description

Technical Field

[0001] This utility model relates to the field of packaging machinery technology, and in particular to a cutting device and a bag-feeding machine. Background Technology

[0002] Automatic packaging bag dispensing machines are a type of packaging machinery widely used in the food and pharmaceutical industries. They are primarily used to cut consecutively connected packaging bags and dispense individual bags onto the target object, such as seasoning packets in instant noodles or preservative packets in food bags. However, ordinary dispensing machines can only cut and dispense packaging bags one at a time, which cannot meet the needs of continuously cutting multiple bags. To address this requirement, a cutting device and dispensing machine have been designed, allowing users to adjust the number of bags to be cut consecutively as needed. Utility Model Content

[0003] In view of the above problems of the prior art, this application provides a cutting device and a bag-feeding machine, which allows users to adjust the number of bags to be cut continuously as needed.

[0004] To achieve the above objectives, a first aspect of this application provides a cutting device, comprising: a movable cutter, wherein a first cutting edge is provided on one side of the movable cutter, and the first cutting edge extends along a first direction; a shearing drive mechanism, wherein the movable cutter is mounted on the shearing drive mechanism, and the shearing drive mechanism drives the movable cutter to reciprocate along a second direction, the second direction being perpendicular to the first direction; a fixed cutter, wherein a second cutting edge is provided on one side edge of the fixed cutter, the second cutting edge extends along the first direction, the second cutting edge is located on the movement path of the first cutting edge, and is offset from the first cutting edge in the thickness direction of the fixed cutter; the first cutting edge and the second cutting edge are serrated when viewed along the thickness direction, and the serrations of the first cutting edge and the second cutting edge are in complementary positions; one of the first cutting edge and the second cutting edge has a triangular shape, and the other has a trapezoidal shape; a position adjustment mechanism, wherein the position adjustment mechanism adjusts the position between the first cutting edge and the second cutting edge when the first cutting edge moves toward the second cutting edge to a turning position, such that the edge of the triangular serration partially or completely crosses the outer edge of the trapezoidal serration.

[0005] As described above, the shearing mechanism drives the movable cutter to reciprocate, which can cooperate with the fixed cutter to shear the material using the first cutting edge and the second cutting edge on the moving path. Furthermore, since one of the first and second cutting edges has triangular teeth and the other has trapezoidal teeth, when the position adjustment mechanism moves the first cutting edge toward the second cutting edge to the turning position (the position where shearing is completed), the position between the first and second cutting edges causes the edge of the triangular teeth to cross the outer edge of the trapezoidal teeth, meaning the triangular teeth partially pierce the material. Part of the material is sheared between the first and second cutting edges (the part where the edge of the triangular teeth crosses the outer edge of the trapezoidal teeth), while part is not sheared (the part where the edge of the triangular teeth does not cross the outer edge of the trapezoidal teeth). This creates a point-cutting effect on the material. When the position adjustment mechanism moves the first cutting edge toward the second cutting edge to the turning position (the position where shearing is completed), the position between the first and second cutting edges causes the edge of the triangular teeth to completely cross the outer edge of the trapezoidal teeth, meaning the material is completely sheared between the first and second cutting edges. This allows the material to be completely cut off. The user can control the position adjustment mechanism to adjust the position between the first and second cutting edges when the first cutting edge moves toward the second cutting edge to the turning position, thereby controlling whether the material is partially or completely cut off. This allows the cutting device to cut the material after a predetermined number of consecutive partial cuts when adjusting the cutting device to cut the material as needed.

[0006] In some embodiments, an angle ∠b is provided between the movable cutter and the fixed cutter, and 0° < ∠b < 1.5°.

[0007] Therefore, by setting an angle between the movable and fixed cutters (0° < ∠b), the contact area between them can be reduced, thereby reducing friction and extending their service life. Furthermore, by ensuring the angle between the movable and fixed cutters is less than 1.5° (∠b < 1.5°), the likelihood of material entering between them and affecting the shearing effect can be reduced.

[0008] In some embodiments, the angle between the two sides of the triangular serration is equal to the angle between the two sides of the trapezoidal serration.

[0009] As described above, by making the angle between the two sides of the triangular saw teeth equal to the angle between the two sides of the trapezoidal saw teeth, the trapezoidal saw teeth can provide more uniform support to the material when the triangular saw teeth penetrate it during the shearing process, thereby improving the shearing effect of the first and second cutting edges.

[0010] In some embodiments, the movable cutter is provided with a support portion, which is located at both ends of the first blade and extends outward along the second direction, and the fixed cutter abuts against the support portion; or, the fixed cutter is provided with a support portion, which is located at both ends of the second blade and extends outward along the second direction, and the movable cutter abuts against the support portion.

[0011] Therefore, as the movable cutter reciprocates along the second direction, the movable cutter and the fixed cutter can remain in contact via the support. This improves the stability of the shearing operation between the movable and fixed cutters, thereby enhancing the shearing effect.

[0012] In some embodiments, the movable cutter and the fixed cutter are respectively provided with strip-shaped protrusions on opposite side surfaces. Multiple protrusions are continuously provided along a first direction, so that the multiple protrusions appear as a zigzag shape when viewed along a second direction. The protrusions on the movable cutter and the fixed cutter mesh with each other, and form a first cutting edge and a second cutting edge at their ends.

[0013] As described above, by providing interlocking strip-shaped protrusions on the opposing surfaces of the movable and fixed cutters, the movable cutter can be guided and positioned during its reciprocating movement. This improves the stability of the shearing operation between the movable and fixed cutters, thereby enhancing the shearing effect.

[0014] In some embodiments, the cutting device further includes a clamping mechanism for driving the movable cutter toward the fixed cutter.

[0015] As described above, by driving the movable cutter toward the fixed cutter through the clamping mechanism, the movable cutter remains in contact with the fixed cutter under the drive of the clamping mechanism during the reciprocating shearing operation. This improves the stability of the shearing operation between the movable and fixed cutters, thereby enhancing the shearing effect.

[0016] In some embodiments, the clamping mechanism includes: a swing arm, one end of which is hinged and the other end of which swings toward or away from the movable cutter on the side of the movable cutter away from the fixed cutter; a support wheel, which is disposed at the other end of the swing arm; and an elastic element, one end of which is fixed and the other end of which is connected to the swing arm, driving the other end of the swing arm toward the movable cutter so that the support wheel abuts against the movable cutter.

[0017] The above describes the specific structure of the clamping mechanism. Simultaneously, the elastic force provided by the elastic element drives the support wheel to abut against the movable cutter, thus maintaining the abutment between the support wheel and the movable cutter. This improves the stability of the shearing operation between the movable and fixed cutters, thereby enhancing the shearing effect.

[0018] In some embodiments, the shearing drive mechanism includes a motor and a first blade holder, the motor and the first blade holder being connected by a crank-connecting rod structure, and the movable cutter being fixed on the first blade holder.

[0019] The above provides a specific structure for the shearing drive mechanism. The crank-connecting rod structure converts the rotation of the motor into linear motion reciprocating in the second direction, thereby improving the stability of the moving cutter's movement, which in turn improves the stability of the shearing operation between the moving cutter and the fixed cutter, and ultimately improves the shearing effect.

[0020] In some embodiments, the position adjustment mechanism includes: a drive cylinder having a movable platform that moves along the first direction; a second cutter holder fixed to the movable platform, and the fixed cutter fixed to the second cutter holder.

[0021] The above describes the specific structure of the position adjustment mechanism. By directly driving the fixed cutter on the second cutter holder with the drive cylinder to adjust the position, the adjustment speed and accuracy of the fixed cutter can be improved, thereby improving the stability of the shearing operation between the movable cutter and the fixed cutter, and thus improving the shearing effect.

[0022] A second aspect of this application provides a packaging machine, including the cutting device described in any one of the first aspects of this application.

[0023] As described above, the shearing mechanism drives the movable cutter to reciprocate, which can cooperate with the fixed cutter to shear the material using the first cutting edge and the second cutting edge on the moving path. Furthermore, since one of the first and second cutting edges has triangular serrations and the other has trapezoidal serrations, when the position adjustment mechanism moves the first cutting edge toward the second cutting edge to the turning position (the position where shearing is completed), the position between the first and second cutting edges is such that the edge of the first cutting edge crosses the edge of the second cutting edge. This means that the material is partially sheared between the first and second cutting edges (the portion where the edge of the first cutting edge crosses the edge of the second cutting edge), and partially sheared (the portion where the edge of the first cutting edge does not cross the edge of the second cutting edge). This results in a point-cutting effect on the material. When the position adjustment mechanism moves the first cutting edge toward the second cutting edge to the turning position (the position where shearing is completed), the position between the first and second cutting edges is such that the entire edge of the first cutting edge crosses the edge of the second cutting edge. This means that the material is completely sheared between the first and second cutting edges. This allows the material to be completely cut off. Therefore, the user can control the position adjustment mechanism to adjust the position between the first blade and the second blade when the first blade moves toward the second blade to the turning position, thereby controlling the material to be cut off point by point or completely cut off. This allows the cutting device to cut off the material after a predetermined number of consecutive point cuts when it is adjusted to cut off the material as needed.

[0024] These and other aspects of this invention will become more readily apparent in the following description of several embodiments. Attached Figure Description

[0025] The various features of this utility model and the relationships between them are further explained below with reference to the accompanying drawings. The drawings are exemplary; some features are not shown to scale, and some drawings may omit conventional features in the field of this application that are not essential to this application, or additional features that are not essential to this application may be shown. The combination of features shown in the drawings is not intended to limit this application. Furthermore, throughout this specification, the same reference numerals refer to the same things. Specific descriptions of the drawings are as follows:

[0026] Figure 1 This is an exploded view of the cutting device in this application;

[0027] Figure 2 for Figure 1 Exploded view of one side of the shear drive mechanism;

[0028] Figure 3 for Figure 1 A schematic diagram of the exploded structure on the other side of the shear drive mechanism;

[0029] Figure 4 for Figure 1 A schematic diagram of the central clamping mechanism, the movable cutter, and the fixed cutter;

[0030] Figure 5 One of the schematic diagrams of the top structure of the fixed cutter and the movable cutter;

[0031] Figure 6 for Figure 5 Schematic diagram of the AA section;

[0032] Figure 7 The second schematic diagram shows the top structure of the fixed cutter and the movable cutter;

[0033] Figure 8 for Figure 7 Schematic diagram of the BB section;

[0034] Figure 9 A schematic diagram of the material package after being cut by a fixed cutter and a movable cutter in a continuous package mode;

[0035] Figure 10 The third schematic diagram of the top structure for the fixed cutter and the movable cutter;

[0036] Figure 11 for Figure 10 Schematic diagram of the CC section.

[0037] Explanation of reference numerals in the attached figures

[0038] 10 Cutting device; 100 Frame; 200 Movable cutter; 210 Main body; 220 Support; 230 First cutting edge; 300 Shearing drive mechanism; 310 Motor; 320 Drive shaft; 330 Crank; 340 Connecting rod; 350 Fixed base; 360 Slide rail; 370 Mounting block; 380 First cutter holder; 400 Fixed cutter; 410 Second cutting edge; 500 Position adjustment mechanism; 510 Drive cylinder; 520 Cutter holder mounting plate; 530 Second cutter holder; 600 Clamping mechanism; 610 Swing arm; 620 Support wheel; 630 Elastic element; 20 Material bag. Detailed Implementation

[0039] The terms "first, second, third, etc." or similar terms such as module A, module B, module C, etc., used in the specification and claims are only used to distinguish similar objects and do not represent a specific ordering of objects. It is understood that a specific order or sequence may be interchanged where permitted so that the embodiments of this application described herein can be implemented in an order other than that illustrated or described herein.

[0040] In the following description, the labels of the steps, such as S110, S120, etc., do not necessarily mean that the steps will be executed in this way. The order of the steps can be interchanged or executed simultaneously if permitted.

[0041] The term "comprising" as used in the specification and claims should not be construed as limiting itself to what follows; it does not exclude other elements or steps. Therefore, it should be interpreted as specifying the presence of the mentioned feature, integral, step, or component, but does not exclude the presence or addition of one or more other features, integrals, steps, or components, or groups thereof. Thus, the statement "device comprising means A and B" should not be limited to a device consisting solely of components A and B.

[0042] The terms "an embodiment" or "an embodiment" as used in this specification mean that a particular feature, structure, or characteristic described in conjunction with that embodiment is included in at least one embodiment of the present invention. Therefore, the terms "in one embodiment" or "in an embodiment" appearing throughout this specification do not necessarily refer to the same embodiment, but may refer to the same embodiment. Furthermore, in one or more embodiments, the particular features, structures, or characteristics can be combined in any suitable manner, as will be apparent to those skilled in the art from this disclosure.

[0043] Hereinafter, with reference to the accompanying drawings, possible embodiments of the cutting device 10 in this application will be described by way of example.

[0044] The cutting device 10 of this application includes a movable cutter 200, a shearing drive mechanism 300, a fixed cutter 400, and a position adjustment mechanism 500. The movable cutter 200 has a first blade 230 on one side, extending along a first direction. The movable cutter 200 is mounted on the shearing drive mechanism 300, which drives the movable cutter 200 to reciprocate along a second direction perpendicular to the first direction. The fixed cutter 400 has a second blade 410 on one edge, extending along the first direction and positioned along the movement path of the first blade 230, offset from the first blade 230 in the thickness direction of the fixed cutter 400. Both the first blade 230 and the second blade 410 are serrated when viewed along the thickness direction, and the serrations of the first blade 230 and the second blade 410 are complementary. In the first cutting edge 230 and the second cutting edge 410, one serration is triangular in shape and the other serration is trapezoidal in shape. The position adjustment mechanism 500 adjusts the position between the first cutting edge 230 and the second cutting edge 410 when the first cutting edge 230 moves toward the second cutting edge 410 to the turning position, so that the edge of the first cutting edge 230 partially or completely crosses the edge of the second cutting edge 410.

[0045] As described above, the movable cutter 200 is driven by the shearing mechanism to reciprocate, cooperating with the fixed cutter 400 to shear the material using the first cutting edge 230 and the second cutting edge 410 on the moving path. Furthermore, since the first cutting edge 230 has triangular serrations and the second cutting edge 410 has trapezoidal serrations, when the position adjustment mechanism 500 adjusts the first cutting edge 230 towards the second cutting edge 410 to the turning position (the position where shearing is completed), the position between the first cutting edge 230 and the second cutting edge 410 causes the edge of the triangular serrations to extend beyond the outer edge of the trapezoidal serrations, meaning the triangular serrations partially pierce the material. The material is partially sheared between the first cutting edge 230 and the second cutting edge 410 (the portion where the edge of the triangular serrations extends beyond the outer edge of the trapezoidal serrations), and partially sheared (the portion where the edge of the triangular serrations does not extend beyond the outer edge of the trapezoidal serrations). This results in a point-cutting effect on the material. When the position adjustment mechanism 500 moves the first blade 230 toward the second blade 410 to the turning position (the position where shearing is completed), the position between the first blade 230 and the second blade 410 is such that the edge of the triangular saw teeth completely crosses the outer edge of the trapezoidal saw teeth, meaning that the material is completely sheared between the first blade 230 and the second blade 410. This ensures that the material is completely cut off. Therefore, the user can control the position adjustment mechanism 500 to adjust the position between the first blade 230 and the second blade 410 when the first blade 230 moves toward the second blade 410 to the turning position, thereby controlling whether the material is partially or completely cut off. This allows the cutting device 10 to cut the material after a predetermined number of consecutive partial cuts when adjusting the material cutting as needed.

[0046] In some embodiments, preferably, the first cutting edge 230 is a triangular saw tooth. This allows the triangular saw tooth to easily pierce stationary material when the first cutting edge 230 reciprocates under the drive of the shearing drive mechanism 300, thereby reducing the shearing difficulty and improving the shearing effect.

[0047] In some embodiments, an angle ∠b is provided between the movable cutter 200 and the fixed cutter 400, where 0° < ∠b < 1.5°. Therefore, by providing an angle between the movable cutter 200 and the fixed cutter 400, i.e., 0° < ∠b, the contact area between the movable cutter 200 and the fixed cutter 400 can be reduced, thereby reducing the friction between the movable cutter 200 and the fixed cutter 400 and improving their service life. Furthermore, by making the angle between the movable cutter 200 and the fixed cutter 400 less than 1.5°, i.e., ∠b < 1.5°, the probability of material entering between the movable cutter 200 and the fixed cutter 400 and affecting the shearing effect can be reduced.

[0048] In some embodiments, the angle between the two sides of the triangular saw teeth is equal to the angle between the two sides of the trapezoidal saw teeth. Therefore, by making the angle between the two sides of the triangular saw teeth equal to the angle between the two sides of the trapezoidal saw teeth, the support of the trapezoidal saw teeth on the material is more uniform during the shearing process as the triangular saw teeth penetrate the material, thereby improving the shearing effect of the first cutting edge 230 and the second cutting edge 410.

[0049] In some embodiments, the movable cutter 200 is provided with a support portion 220, which is located at both ends of the first cutting edge 230 and extends outward in a second direction, with the fixed cutter 400 abutting against the support portion 220. Alternatively, the fixed cutter 400 is provided with a support portion 220, which is located at both ends of the second cutting edge 410 and extends outward in a second direction, with the movable cutter 200 abutting against the support portion 220. Thus, when the movable cutter 200 reciprocates in the second direction, the movable cutter 200 and the fixed cutter 400 can be kept in contact via the support portion 220. This improves the stability of the cutting operation between the movable cutter 200 and the fixed cutter 400, thereby improving the cutting effect.

[0050] In some embodiments, the movable cutter 200 and the fixed cutter 400 each have strip-shaped protrusions on their opposite side surfaces. Multiple protrusions are continuously arranged along a first direction, forming a zigzag shape when viewed from a second direction. The protrusions on the movable cutter 200 and the fixed cutter 400 mesh with each other, forming a first cutting edge 230 and a second cutting edge 410 at their ends. Therefore, by providing meshing strip-shaped protrusions on the opposite side surfaces of the movable cutter 200 and the fixed cutter 400, the movable cutter 200 can be guided and positioned during reciprocating movement. This improves the stability of the shearing operation between the movable cutter 200 and the fixed cutter 400, thereby enhancing the shearing effect.

[0051] In some embodiments, the cutting device 10 further includes a clamping mechanism 600, which drives the movable cutter 200 to move toward the fixed cutter 400. Thus, by driving the movable cutter 200 toward the fixed cutter 400 through the clamping mechanism 600, the movable cutter 200 can be kept in contact with the fixed cutter 400 under the drive of the clamping mechanism 600 during the reciprocating cutting operation. This improves the stability of the cutting operation between the movable cutter 200 and the fixed cutter 400, thereby improving the cutting effect.

[0052] In some embodiments, the clamping mechanism 600 includes a swing arm 610, a support wheel 620, and an elastic element 630. One end of the swing arm 610 is hinged, and the other end swings towards or away from the movable cutter 200 on the side of the movable cutter 200 away from the fixed cutter 400. The support wheel 620 is disposed at the other end of the swing arm 610. One end of the elastic element 630 is fixed, and the other end is connected to the swing arm 610, driving the other end of the swing arm 610 towards the movable cutter 200, causing the support wheel 620 to abut against the movable cutter 200. This provides a specific structure for the clamping mechanism 600. Simultaneously, the elastic force provided by the elastic element 630 drives the support wheel 620 to abut against the movable cutter 200, thereby maintaining the abutment state between the support wheel 620 and the movable cutter 200. This improves the stability of the shearing operation between the movable cutter 200 and the fixed cutter 400, thereby improving the shearing effect.

[0053] In some embodiments, the shearing drive mechanism 300 includes a motor 310 and a first blade holder 380, which are connected by a crank 330 and a connecting rod 340 structure. The movable cutter 200 is fixed on the first blade holder 380. This provides a specific structure for the shearing drive mechanism 300, which converts the rotation of the motor 310 into linear reciprocating motion along a second direction through the crank 330 and connecting rod 340 structure. This improves the stability of the movable cutter 200's movement, thereby enhancing the stability of the shearing operation between the movable cutter 200 and the fixed cutter 400, and ultimately improving the shearing effect.

[0054] In some embodiments, the position adjustment mechanism 500 includes a drive cylinder 510 and a second cutter holder 530. The drive cylinder 510 has a movable platform that moves along a first direction, the second cutter holder 530 is fixed to the movable platform, and the fixed cutter 400 is fixed to the second cutter holder 530. This provides a specific structure for the position adjustment mechanism 500. By directly driving the fixed cutter 400 on the second cutter holder 530 with the drive cylinder 510 for position adjustment, the adjustment speed and accuracy of the fixed cutter 400 can be improved, thereby enhancing the stability of the shearing operation between the movable cutter 200 and the fixed cutter 400, and ultimately improving the shearing effect.

[0055] This application also provides a packaging machine, including any possible implementation of the cutting device 10 described above, the specific structure of which will not be elaborated here.

[0056] The above description provides an exemplary account of possible embodiments of the cutting device 10 and the packaging machine in this application. Below, with reference to the accompanying drawings, a detailed description of the specific structure of the cutting device 10 in a particular embodiment will be provided.

[0057] Figure 1This is an exploded view of the cutting device 10 in this application. Figure 1 As shown, the cutting device 10 of this application includes a frame 100, a movable cutter 200, a shearing drive mechanism 300, a fixed cutter 400, and a position adjustment mechanism 500. The shearing drive mechanism 300 and the position adjustment mechanism 500 are fixedly mounted on the frame 100, the fixed cutter 400 is mounted on the position adjustment mechanism 500, and the movable cutter 200 is mounted on the shearing drive mechanism 300. The shearing drive mechanism 300 drives the movable cutter 200 to reciprocate toward the fixed cutter 400, performing a shearing operation on the material between the movable cutter 200 and the fixed cutter 400. The position adjustment mechanism 500 adjusts the position of the fixed cutter 400, allowing the shearing operation of the movable cutter 200 and the fixed cutter 400 on the material to switch between complete cutting (cutting mode) and partial cutting / partial cutting (continuous cutting mode).

[0058] Specifically, when the material is, for example, a series of multiple packages 20, the position adjustment mechanism 500 adjusts the position of the fixed cutter 400, allowing control over the cutting mode of the movable cutter 200 and the fixed cutter 400 at the sealing position of the packages 20 as needed. Thus, for example, by setting the movable cutter 200 and the fixed cutter 400 to cycle through one cutting mode followed by one package-connecting mode, the packages 20 can be cut into two-package states for discharge. Alternatively, by setting the movable cutter 200 and the fixed cutter 400 to cycle through one cutting mode followed by two package-connecting modes, the packages 20 can be cut into three-package states for discharge. Furthermore, the cutting modes of the movable cutter 200 and the fixed cutter 400 can be arbitrarily adjusted as needed, thereby enabling the packages 20 to be discharged as single packages or any number of packages.

[0059] Figure 2 for Figure 1 Exploded view of one side of the shear drive mechanism 300; Figure 3 for Figure 1 An exploded view of the other side of the shear drive mechanism 300. (See diagram below.) Figure 2 , Figure 3 As shown, the shearing drive mechanism 300 includes a motor 310, a drive shaft 320, a crank 330, a connecting rod 340, a fixed base 350, a slide rail 360, a mounting block 370, and a first cutter holder 380.

[0060] like Figure 2As shown, motor 310 is a servo motor, which is mounted on the frame 100 via a mounting plate and pads. Motor 310 is connected to drive shaft 320 via a coupling, driving drive shaft 320 to rotate. A detection cam is mounted on drive shaft 320, and a photoelectric sensor detects each rotation of drive shaft 320, generating a signal. Drive shaft 320 is mounted on a bearing housing via bearings, and the bearing housing is fixed to the frame 100.

[0061] like Figure 3 As shown, crank 330 is mounted on drive shaft 320 in a clamping manner, facilitating adjustment of the relative relationship between the detection signal and the movable cutter 200. Connecting rod 340 is fixed to crank 330 via bearings and a sleeve. Connecting rod 340 is mounted on fixed seat 350 via shaft and oil-free bushing. Slide rail 360 is fixed to frame 100 and extends along the second direction. Fixed seat 350 is mounted on slide rail 360 and can only slide along the second direction. Thus, a crank 330 slider structure is formed, converting the rotation of motor 310 into linear reciprocating motion along the second direction. During the motion, the shaft rotates relative to the oil-free bushing; grooves are cut on the shaft and filled with lubricating oil to ensure its smooth and jam-free movement.

[0062] like Figure 3 As shown, the fixed seat 350 is mounted on the slide rail 360 and fixed to the connecting rod 340 via a shaft. The shaft is connected to the mounting block 370 via two oil-free bushings. The mounting block 370 rotates on the shaft, thereby realizing the change of cutting angle during movement. The movable cutter 200 is fixed on the first cutter holder 380. The first cutter holder 380 and the mounting block 370 are positioned by a locating pin. The two can rotate through the locating pin and be tightened by a set screw, so that the movable cutter 200 is relatively horizontal. That is, the movable cutter 200 can be adjusted so that the contact surface of the cutting edge of the movable cutter 200 and the cutting edge of the fixed cutter 400 are coplanar. The locating pin is installed with an interference fit to ensure accurate positioning.

[0063] like Figure 1 As shown, the position adjustment mechanism 500 includes a drive cylinder 510, a blade holder mounting plate 520, and a second blade holder 530. The drive cylinder 510 is an electric cylinder, fixedly mounted on the frame 100 via an electric cylinder mounting base 350. A movable platform is provided on top of the drive cylinder 510, which drives the movable platform to move back and forth in a second direction. The blade holder mounting plate 520 is fixedly mounted on the movable platform, and the fixed cutter 400 is fixedly mounted on the second blade holder 530. The second blade holder 530 and the blade holder mounting plate 520 are positioned by a locating pin. They can be rotated via the locating pin and secured by a set screw, ensuring that the movable cutter 200 is relatively horizontal. This allows adjustment of the movable cutter 200 so that the contact surfaces of the blades of the fixed cutter 400 and the movable cutter 200 are coplanar. The locating pin is installed with an interference fit to ensure accurate positioning.

[0064] Figure 4 for Figure 1 A schematic diagram of the structure of the intermediate clamping mechanism 600, the movable cutter 200, and the fixed cutter 400. (See attached diagram.) Figure 1 , Figure 4 As shown, the cutting device 10 also includes a clamping mechanism 600. Two sets of clamping mechanisms 600 are provided, respectively positioned on either side of the fixed cutter 400 and the movable cutter 200, for driving the movable cutter 200 to move towards the fixed cutter 400. Thus, by driving the movable cutter 200 towards the fixed cutter 400 through the clamping mechanism 600, the movable cutter 200 remains in contact with the fixed cutter 400 under the drive of the clamping mechanism 600 during the reciprocating cutting operation. This improves the stability of the cutting operation between the movable cutter 200 and the fixed cutter 400, thereby improving the cutting effect.

[0065] like Figure 4 As shown, the clamping mechanism 600 includes a swing arm 610, a support wheel 620, and an elastic element 630. One end of the swing arm 610 is hinged to the fixed cutter 400, and the support wheel 620 is located at the other end of the swing arm 610, corresponding to the lower part of the support portion 220 of the movable cutter 200. The elastic element 630 is a spring, with one end fixed to the fixed cutter 400 and the other end fixed to the other end of the swing arm 610. Thus, the tension provided by the elastic element 630 drives the support wheel 620 to abut against the support portion 220, thereby ensuring that the movable cutter 200 remains in close contact with the fixed cutter 400 under the support of the support wheel 620 when the movable cutter 200 reciprocates along the second direction, thereby improving the stability and effectiveness of the cutting.

[0066] Figure 5 One of the schematic diagrams of the top structure of the fixed cutter 400 and the movable cutter 200 shows the specific structure of the first blade 230 and the second blade 410 in the separated state; Figure 6 for Figure 5 Schematic diagram of sectional view (AA). Figures 5-6 As shown, the movable cutter 200 includes a main body 210 and a support 220. The main body 210 is generally a trapezoidal columnar structure extending along a first direction, and the cross-section of the main body 210 is... Figure 6 The right-angled trapezoid shown has a support portion 220 at each end of the main body 210. The support portion 220 is cuboid in shape and extends towards the fixed cutter 400 along the second direction. The movable cutter 200 is horizontally positioned, and its upper surface has triangular strip-shaped protrusions. These protrusions extend along the second direction, and multiple protrusions are provided, covering the upper surfaces of the main body 210 and the support portion 220 along the first direction, so that the upper surface of the movable cutter 200 appears as a zigzag shape when viewed along the second direction.

[0067] like Figure 5 As shown, the protruding edge on the movable cutter 200 extends from the surface of the movable cutter 200 toward the fixed cutter 400 at the end facing the fixed cutter 400, forming a serrated first cutting edge 230. Viewed from the top of the movable cutter 200 (along the direction perpendicular to the first direction and the second direction), the first cutting edge 230 is a triangular serration extending along the first direction.

[0068] like Figures 5-6 As shown, the fixed cutter 400 is a trapezoidal columnar component, meaning it appears as a right-angled trapezoid when viewed from the first direction. The fixed cutter 400 is positioned above the movable cutter 200, with the lower surface (base side) of the fixed cutter 400 facing the movable cutter 200. The lower surface of the fixed cutter 400 has triangular protruding ridges corresponding to the protruding ridges on the upper surface of the movable cutter 200, allowing these ridges to engage. Therefore, when the movable cutter 200 reciprocates along the second direction under the drive of the shearing drive mechanism 300, both the movable cutter 200 and the fixed cutter 400 move along the second direction guided by the engaging ridges, thus improving the stability of the movable cutter 200 during reciprocating movement and consequently enhancing the shearing effect.

[0069] like Figure 5 As shown, the protrusion on the fixed cutter 400 forms a second cutting edge 410 on the lower surface of the fixed cutter 400 facing the movable cutter 200. Viewed from the top of the fixed cutter 400 (along the direction perpendicular to the first direction and the second direction), the second cutting edge 410 is a trapezoidal serration extending along the first direction, that is, a triangular serration with part of the tooth tip removed.

[0070] like Figure 5 , Figure 5 As shown, the fixed cutter 400 has the same dimensions as the movable cutter 200 in the first direction. When the shearing drive mechanism 300 drives the movable cutter 200 to reciprocate in the second direction, the movable cutter 200 and the fixed cutter 400 remain in contact. Specifically, the support portions 220 on both sides of the movable cutter 200 remain in contact with the fixed cutter 400, so that the second cutting edge 410 on the fixed cutter 400 is always on the moving path of the first cutting edge 230 of the movable cutter 200, thereby improving the stability of the shearing operation.

[0071] like Figure 6As shown, an angle ∠b is provided between the movable cutter 200 and the fixed cutter 400, where 0° < ∠b < 1.5°. Therefore, by setting an angle between the movable cutter 200 and the fixed cutter 400, i.e., 0° < ∠b, the contact area between the movable cutter 200 and the fixed cutter 400 can be reduced, thereby reducing the friction between them and increasing their service life. Furthermore, by ensuring that the angle between the movable cutter 200 and the fixed cutter 400 is less than 1.5°, i.e., ∠b < 1.5°, the probability of material entering between the movable cutter 200 and the fixed cutter 400 and affecting the shearing effect can be reduced.

[0072] Figure 7 The second schematic diagram of the top structure of the fixed cutter 400 and the movable cutter 200 shows the specific structure of the first blade 230 and the second blade 410 when they are in the continuous wrapping mode and the cutting is completed. Figure 8 for Figure 7 Schematic diagram of the BB section; Figure 9 This is a schematic diagram of the material package 20 after being cut in a continuous package mode by the fixed cutter 400 and the movable cutter 200. Figures 7-9 As shown, when the position adjustment mechanism 500 adjusts the position of the fixed cutter 400 to the position corresponding to the continuous packaging mode, when the shearing drive mechanism 300 drives the movable cutter 200 to move to the end of its reciprocating movement path facing the fixed cutter 400, completing the shearing of the material bag 20, the triangular serrated portion on the first blade 230 crosses the outer edge of the trapezoidal serrated portion on the second blade 410 and penetrates the material bag 20, cutting off the material bag 20 at that position. The trapezoidal serrated portion on the second blade 410 impacts the material bag 20 (when the movable cutter 200 shears, it drives the material bag 20 to move towards the fixed cutter 400), forming a toothed indentation at the corresponding position to create a false cut, without cutting off the material bag 20 at that position. Thus, the sealing position between two adjacent bags of the material bag 20 can be formed as shown in the image. Figure 9 The image shows a point break effect with alternating partial cuts and partial virtual cuts.

[0073] Figure 10 The third schematic diagram of the top structure of the fixed cutter 400 and the movable cutter 200 shows the specific structure of the first blade 230 and the second blade 410 when they are in the cutting mode and the cutting is completed. Figure 11 for Figure 5 Schematic diagram of the CC section. (See diagram below.) Figure 10 , Figure 11As shown, when the position adjustment mechanism 500 adjusts the position of the fixed cutter 400 to the position corresponding to the cutting mode, when the shearing drive mechanism 300 drives the movable cutter 200 to move to the end of its reciprocating movement path facing the fixed cutter 400, and completes the shearing of the material bag 20, all the triangular serrations on the first blade 230 pass over the outer edge of the trapezoidal serrations on the second blade 410, and completely cut the material bag 20.

[0074] Furthermore, the angle between the two sides of the triangular serrations of the first cutting edge 230 is an acute angle. Specifically, it can be, for example, an angle less than 60°. This allows the serrations to extend further and become sharper, reducing the impact force when the movable cutter 200 is inserted, making the shearing operation more stable. At the same time, because the tooth tips are longer, when shearing in a continuous package mode, a small error will prevent the serrations of the first cutting edge 230 and the second cutting edge 410 from completely meshing and cutting the package 20, thereby increasing the tolerance for point breaks.

[0075] Note that the above are merely preferred embodiments and the technical principles employed in this application. Those skilled in the art will understand that this utility model is not limited to the specific embodiments described herein, and various obvious changes, readjustments, and substitutions can be made without departing from the protection scope of this utility model. Therefore, although this application has been described in detail through the above embodiments, this utility model is not limited to the above embodiments. Many other equivalent embodiments may be included without departing from the concept of this utility model, all of which fall within the protection scope of this utility model.

Claims

1. A cutting device, characterized in that, include: A movable cutter, wherein a first cutting edge is provided on one side of the movable cutter, and the first cutting edge extends along a first direction; A shearing drive mechanism is provided, wherein the movable cutter is mounted on the shearing drive mechanism, and the shearing drive mechanism drives the movable cutter to reciprocate along a second direction, the second direction being perpendicular to the first direction; A fixed cutter has a second cutting edge on one side edge, which extends along the first direction and is located on the moving path of the first cutting edge, offset from the first cutting edge in the thickness direction of the fixed cutter. The first and second cutting edges are serrated when viewed along the thickness direction, and the serrations of the first and second cutting edges are complementary. Of the first and second cutting edges, one serration is triangular and the other is trapezoidal. A position adjustment mechanism adjusts the position between the first cutting edge and the second cutting edge when the first cutting edge moves toward the second cutting edge to a turning position, so that the edge of the triangular saw tooth partially or completely crosses the outer edge of the trapezoidal saw tooth.

2. The cutting device according to claim 1, characterized in that, An angle ∠b is provided between the movable cutter and the fixed cutter, and 0° < ∠b < 1.5°.

3. The cutting device according to claim 1, characterized in that, The angle between the two sides of the serrations of the triangle is equal to the angle between the two sides of the serrations of the trapezoid.

4. The cutting device according to claim 1, characterized in that, The movable cutter is provided with a support portion, which is located at both ends of the first blade and extends outward along the second direction. The fixed cutter is in contact with the support portion. or, The fixed cutter is provided with a support portion, which is located at both ends of the second blade and extends outward along the second direction. The movable cutter abuts against the support portion.

5. The cutting device according to claim 4, characterized in that, The movable cutter and the fixed cutter are respectively provided with strip-shaped protrusions on their opposite side surfaces. Multiple protrusions are continuously provided along the first direction, so that the multiple protrusions are zigzag-shaped when viewed along the second direction. The protrusions on the movable cutter and the fixed cutter mesh with each other, and form the first cutting edge and the second cutting edge at their ends.

6. The cutting device according to claim 4 or 5, characterized in that, Also includes: A clamping mechanism is provided for driving the movable cutter toward the fixed cutter.

7. The cutting device according to claim 6, characterized in that, The clamping mechanism includes: A swing arm, one end of which is hinged, and the other end of which swings toward or away from the movable cutter on the side of the movable cutter away from the fixed cutter; A support wheel is disposed at the other end of the swing arm; An elastic element is fixed at one end and connected to the swing arm at the other end, driving the other end of the swing arm to approach the movable cutter, so that the support wheel abuts against the movable cutter.

8. The cutting device according to claim 1, characterized in that, The shearing drive mechanism includes a motor and a first blade holder, which are connected by a crank-connecting rod structure, and the movable cutter is fixed on the first blade holder.

9. The cutting device according to claim 1, characterized in that, The position adjustment mechanism includes: A drive cylinder having a movable platform that moves along the first direction; The second cutter holder is fixed on the movable platform, and the fixed cutter is fixed on the second cutter holder.

10. A baggage dropper, characterized in that, The cutting device includes any one of claims 1-9.

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