CN115626348A

CN115626348A - Bag dividing scissor mechanism and bag dividing scissor device

Info

Publication number: CN115626348A
Application number: CN202211616607.3A
Authority: CN
Inventors: 李勇奎; 李文新
Original assignee: Cangzhou Eiahe Machinery Co ltd
Current assignee: Cangzhou Eiahe Machinery Co ltd
Priority date: 2022-12-16
Filing date: 2022-12-16
Publication date: 2023-01-20
Anticipated expiration: 2042-12-16
Also published as: CN115626348B

Abstract

The invention provides a bag dividing scissor mechanism and a bag dividing scissor device, belonging to the technical field of packaging equipment and comprising an integrated blade and a split blade; the split blade comprises a blade carrier and a blade body, the blade body is positioned on one side, close to the integrated blade, of the upper part of the blade carrier, and the blade carrier is hinged with the integrated blade to form a scissors structure; the lower extreme of blade body passes through the fastener and is connected with the knife rest, still is equipped with the second elastic component between blade body and the knife rest, and the second elastic component is configured with the pretightning force that makes the integrative blade of blade body laminating. The invention can automatically adjust the distance between the integrated blade and the blade body according to the thicknesses of different packaging bags while finishing effective shearing, and does not need to carry out complicated distance adjustment operation; still form the elastic buffer effect between integrative blade and components of a whole that can function independently blade, avoid taking place rigidity to collide with between blade body and the integrative blade, reduce the change frequency of blade.

Description

Bag dividing scissor mechanism and bag dividing scissor device

Technical Field

The invention belongs to the technical field of packaging equipment, and particularly relates to a bag dividing scissor mechanism and a bag dividing scissor device.

Background

The packaging machine is a machine for packaging products, and plays a role in protection and attractiveness. For some liquid, powder or granular products, a plurality of merchants package the products by using plastic bags, bag separation is an essential link in a bag making process of a packaging bag, and the purpose of bag separation is to divide a semi-finished product packaging bag into independent finished product packaging bags to prepare for a subsequent filling process.

With the development of packaging technology, the working speed of the packaging machine is greatly improved, and the scissors stations of some high-speed packaging machines can complete an opening and closing action even within 0.75 second, which puts higher requirements on the structural performance of the scissors devices in the packaging machine.

In the existing scissors device, in order to guarantee effective shearing, the distance between the two blades needs to be adjusted repeatedly, the adjusting process is complicated, and the distance adjusting precision is difficult to guarantee. For example, if the spacing between the two blades is too large, it may be difficult to provide an effective shearing force to cut the package; if the two blades are attached too tightly (the distance is too small), although shearing is favorably realized, rigid impact is easy to occur between the two blades at the closing moment, so that the blades are damaged quickly, and the blades need to be replaced frequently.

Disclosure of Invention

The embodiment of the invention provides a bag dividing scissors mechanism and a bag dividing scissors device, and aims to solve the problem that the distance between two blades in the scissors device in the prior art is difficult to realize accurate adjustment.

In order to realize the purpose, the invention adopts the technical scheme that:

in a first aspect, a pair of bag splitting scissors mechanism is provided, which comprises an integrated blade and a split blade;

the split blade comprises a blade holder and a blade body, the blade body is positioned on one side, close to the integrated blade, of the upper part of the blade holder, and the blade holder is hinged with the integrated blade to form a scissor structure;

the lower extreme of blade body pass through the fastener with the knife rest is connected, the blade body with the knife rest still is equipped with the second elastic component, the second elastic component is configured with and makes the blade body laminating the pretightning force of integrative blade.

With reference to the first aspect, in a possible implementation manner, a first mounting hole is formed in a lower portion of the integrated blade, a second mounting hole corresponding to the first mounting hole is formed in a lower portion of the tool holder, and a first accommodating slot which is open in a direction away from the integrated blade is formed outside the second mounting hole in the tool holder;

divide bag scissors mechanism still includes:

the mounting sleeve is inserted into the first mounting hole and the second mounting hole and matched with the first mounting hole and the second mounting hole, and one shaft end of the mounting sleeve is fixedly connected with the integrated blade;

the first elastic piece is arranged in the first accommodating groove; and

the gland forms a second installation channel corresponding to the first installation channel, the gland fixing cover is arranged on the opening side of the first accommodating groove, the first elastic piece is abutted to the gland, and the first elastic piece is configured to enable the gland to be far away from the pretightening force of the tool rest.

In some embodiments, the other axial end of the mounting sleeve is fixedly connected with the gland.

In some embodiments, the first receiving groove is a ring groove distributed along the circumference of the second mounting hole.

In some embodiments, the tool holder is provided with a guide post, the blade body is provided with a guide hole matched with the free end of the guide post, and the second elastic member is sleeved on the periphery of the guide post.

In some embodiments, the tool holder forms a first limiting groove towards the first side of the integral blade, the guide post is arranged in the first limiting groove, and the side wall of the first limiting groove is in contact with the edge of the blade body for limiting.

In some embodiments, the tool holder forms a second limiting groove towards the first side of the integral blade, the second limiting groove is located at a lower end of the first limiting groove, the depth of the first limiting groove is greater than that of the second limiting groove, and the lower end of the blade body is installed in the second limiting groove.

Compared with the prior art, the blade body is mostly a long and thin component, after the lower end of the blade body is connected with the knife rest through the fastening piece, a shaking allowance is formed between the upper portion of the blade body and the knife rest, the second elastic piece is arranged, in a free state, the blade body can be effectively attached to the integrated blade through elastic tension of the second elastic piece, the blade body can move to a certain extent under the extrusion effect of the packaging bag when the packaging bag is cut, the blade body is close to the packaging bag under the elastic tension effect of the second elastic piece, when effective cutting is completed, the distance between the integrated blade and the blade body can be automatically adjusted according to the thicknesses of different packaging bags, the blade body can automatically reset after cutting, preparation is made for next cutting, and therefore, after the integrated blade and the split blade are combined, effective cutting can be achieved without complex distance adjustment operation; in addition, at the moment that the integrated blade and the split blade are closed, the second elastic piece has an elastic buffering effect between the integrated blade and the split blade, and flexible impact is formed between the blade body and the integrated blade, so that the problem of means caused by rigid collision between the blade body and the integrated blade is avoided, the service lives of the integrated blade and the blade body are prolonged, and the replacement frequency of the blade is reduced.

In a second aspect, an embodiment of the present invention further provides a bag dividing scissor device, including a rack, a driving mechanism, a transmission mechanism, and the bag dividing scissor mechanism;

the bag dividing scissor mechanism is in running fit with the rack;

the driving end of the transmission mechanism is connected with the driving mechanism, and the driven end of the transmission mechanism is respectively connected with the integrated blade and the tool rest.

With reference to the second aspect, in one possible implementation manner, the transmission mechanism includes:

the first swing arm is provided with a first connecting point, a second connecting point and a third connecting point which are distributed in a triangular shape, the first connecting point is hinged with the tool rest, and the second connecting point is hinged with the rack;

the second swing arm is positioned below the first swing arm and provided with a fourth connecting point, a fifth connecting point and a sixth connecting point which are distributed in a triangular manner, the fourth connecting point is hinged with the integrated blade, the first connecting point and the fourth connecting point respectively form a driven end of the transmission mechanism, and the sixth connecting point forms a driving end of the transmission mechanism and is hinged with the rack; and

one end of the first connecting rod is hinged with the third connecting point, and the other end of the first connecting rod is fixedly connected with the fifth connecting point;

the driving mechanism is a crank connecting rod type mechanism, and the driven end of the driving mechanism is hinged to the sixth connecting point.

In some embodiments, the drive mechanism comprises:

the driving wheel is rotatably matched with the rack;

the middle part of the second connecting rod is rotationally matched with the rack, and one end of the second connecting rod is hinged with the eccentric position of the driving wheel;

one end of the third connecting rod is hinged with the other end of the second connecting rod; and

and one end of the fourth connecting rod is hinged with the other end of the third connecting rod, and the other end of the fourth connecting rod is hinged with the sixth connecting point.

Compared with the prior art, the scheme shown in the embodiment of the application has the advantages that by adopting the bag-dividing scissor mechanism, after the integrated blade and the split blade are assembled, the effective shearing can be realized without complex interval adjustment operation, the whole assembling and debugging time of the device is greatly saved, the manpower and material resources are saved, the service lives of the integrated blade and the split blade can be prolonged, the blade replacement frequency is reduced, and the use cost is reduced.

Drawings

Fig. 1 is a schematic perspective view of a first bag-dividing scissor mechanism according to an embodiment of the present invention;

fig. 2 is a schematic perspective view of a second bag-dividing scissors mechanism according to an embodiment of the present invention;

FIG. 3 is a cross-sectional view of the internal structure of the integrated blade and blade holder combination area employed in an embodiment of the present invention;

FIG. 4 is an exploded view of a first pair of bag-splitting scissors mechanism according to an embodiment of the present invention;

FIG. 5 is an exploded view of a second embodiment of the bag-splitting scissor mechanism of the present invention;

fig. 6 is a schematic perspective view of a pair of bag-dividing scissors device according to an embodiment of the present invention;

FIG. 7 is a schematic perspective view of a spacing adjustment mechanism used in an embodiment of the present invention;

FIG. 8 is a sectional view of the structure of the intermediate distance adjusting mechanism of FIG. 7 taken along the line A;

fig. 9 is a schematic front view of a pair of bag-dividing scissors device according to an embodiment of the present invention, wherein a side plate of the first mounting frame is not shown.

Description of the reference numerals:

1. a bag-dividing scissor mechanism;

110. an integral blade; 111. a first connecting arm; 112. a first mounting hole;

120. a split blade; 121. a tool holder; 1211. a second connecting arm; 1212. a second mounting hole; 1213. a first accommodating groove; 1214. a first limit groove; 1215. a second limit groove; 122. a blade body; 123. a fastener; 124. a second elastic member; 125. a guide post; 126. a guide hole;

130. installing a sleeve; 131. fixing the flanging; 132. a first mounting channel; 140. a first elastic member; 150. a gland; 151. a second mounting channel; 152. a second accommodating groove; 160. fastening sleeves; 170. a gasket;

2. a frame;

210. a first mounting bracket; 220. a second mounting bracket; 230. a fixed shaft; 240. a connecting shaft;

3. a drive mechanism;

310. a drive wheel; 320. a second link; 330. a third link; 340. a fourth link;

4. a transmission mechanism;

410. a first swing arm; 411. a first connection point; 412. a second connection point; 413. a third connection point; 420. a second swing arm; 421. a fourth connection point; 422. a fifth connection point; 423. a sixth connection point; 430. a first link;

5. a spacing adjustment mechanism;

510. an adjustment shaft; 511. adjusting scales; 520. a clamping block; 521. a screw hole; 522. a via hole;

530. a locking structure; 531. adjusting a rod; 532. sliding the clamping member; 533. a cam handle;

540. a fixing plate; 550. adjusting the screw rod; 560. and adjusting a hand wheel.

Detailed Description

In order to make the technical problems, technical solutions and advantageous effects to be solved by the present invention more clearly apparent, the present invention is further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the invention and are not intended to limit the invention.

In the claims, the specification and the drawings of the present invention, unless otherwise expressly limited, the terms "first", "second" or "third", etc. are used for distinguishing between different items and not for describing a particular sequence.

In the claims, the specification and the drawings of the present invention, unless otherwise expressly limited, directional terms such as "central", "lateral", "longitudinal", "horizontal", "vertical", "top", "bottom", "inner", "outer", "upper", "lower", "front", "rear", "left", "right", "clockwise", "counterclockwise", "high", "low", etc., are used for indicating the orientation or positional relationship based on that shown in the drawings and are used for convenience of description and simplicity of description only, and do not indicate or imply that the referenced device or element must have a particular orientation or be constructed and operated in a particular orientation and therefore should not be construed as limiting the scope of the present invention.

In the claims, the description and the drawings of the present application, unless otherwise expressly limited, the terms "fixedly connected" or "fixedly connected" should be interpreted broadly, that is, any connection between the two that does not have a relative rotational or translational relationship, that is, non-detachably fixed, integrally connected, and fixedly connected by other devices or elements.

In the claims, the specification and the drawings of the present invention, the terms "including", "having" and their variants, if used, are intended to be inclusive and not limiting.

Referring to fig. 1 to 5, a pair of bag-dividing scissors mechanism 1 according to the present invention will be described. The bag splitting scissor mechanism 1 comprises an integrated blade 110 and a split blade 120; the split blade 120 comprises a blade holder 121 and a blade body 122, the blade body 122 is positioned on the upper part of the blade holder 121 adjacent to one side of the integral blade 110, and the blade holder 121 is hinged with the integral blade 110 to form a scissors structure; the lower end of the blade body 122 is connected with the blade holder through a fastener 123, a second elastic member 124 is further disposed between the blade body 122 and the blade holder 121, and the second elastic member 124 is configured with a pre-tightening force for enabling the blade body 122 to fit the integral blade 110.

In the embodiment, the second elastic member 124 is located at the middle and/or upper portion of the blade body 122, and it is required to provide stable and reliable elastic tension to the blade body 122.

The embodiments of the fastener 123 of the present embodiment include, but are not limited to, screws, pins, and in-line snaps, as long as the detachable assembly requirements are met. In the present embodiment, the fastening member 123 is exemplarily shown as a screw, a plurality of mounting screw holes distributed in a triangular shape are provided on the tool holder 121, three through counter bores are correspondingly provided on the blade body 122, and the screw is not protruded out of the surface of the blade body 122 after being mounted, so as to avoid colliding with the integral blade 110.

Compared with the prior art, the bag dividing scissor mechanism provided by the embodiment has the advantages that the blade body 122 is mostly a long and thin component, after the lower end of the blade body 122 is connected with the knife rest 121 through the fastener 123, the shaking margin is reserved between the upper part of the blade body 122 and the knife rest 121, through the arrangement of the second elastic part 124, in a free state, the elastic tension of the second elastic part 124 enables the blade body 122 to be effectively attached to the integrated blade 110, when a packaging bag is cut, the blade body 122 can move to a certain extent under the extrusion action of the packaging bag, and is used close to the packaging bag under the elastic tension action of the second elastic part 124, when the effective cutting is completed, the distance between the integrated blade 110 and the blade body 122 is automatically adjusted according to the thicknesses of different packaging bags, and the blade body is automatically reset after the cutting is completed, so as to prepare for the next cutting, and after the integrated blade 110 and the split blade 120 are combined together, the effective cutting can be realized without complicated distance adjustment operation; in addition, at the moment when the integrated blade 110 and the split blade 120 are closed, the second elastic member 124 forms an elastic buffer action between the integrated blade 110 and the split blade 120, and flexible impact is formed between the blade body 122 and the integrated blade 110, so that the problem of means caused by rigid collision between the blade body 122 and the integrated blade 110 is solved, the service lives of the integrated blade 110 and the blade body 120 are prolonged, and the replacement frequency of the blades is reduced.

Some embodiments employ the structure shown in fig. 1-5. Referring to fig. 1 to 5, a first mounting hole 112 is formed in a lower portion of the integral blade 110, a second mounting hole 1212 corresponding to the first mounting hole 112 is formed in a lower portion of the tool holder 121, and a first receiving groove 1213 opened in a direction away from the integral blade 110 is formed in the tool holder 121 outside the second mounting hole 1212. The bag-dividing scissor mechanism 1 further comprises a mounting sleeve 130, a first elastic piece 140 and a gland 150; a first mounting channel 132 is formed inside the mounting sleeve 130, the mounting sleeve 130 is in insertion fit with the first mounting hole 112 and the second mounting hole 1212, and one axial end of the mounting sleeve 130 is fixedly connected with the integral blade 110; the first elastic element 140 is disposed in the first accommodating groove 1213; the pressing cover 150 forms a second mounting channel 151 corresponding to the first mounting channel 132, the pressing cover 150 is fixedly covered on the opening side of the first accommodating groove 1213, the first elastic member 140 abuts against the pressing cover 150, and the first elastic member 140 is configured with a pre-tightening force for keeping the pressing cover 150 away from the tool holder 121. The material of the mounting sleeve 130 and the pressing cover 150 includes, but is not limited to, copper.

During assembly, the mounting sleeve 130 is inserted into the first mounting hole 112 and is fixedly connected with the integral blade 110 (the fixing method includes, but is not limited to, screw connection), then the second mounting hole 1212 of the assembled split blade 120 is sleeved on the mounting sleeve 130, the first elastic element 140 is placed in the first receiving groove 1213, and finally the gland 150 is covered on the opening side of the first receiving groove 1213, so as to assemble the split blade. After the assembly is completed, the first elastic member 140 provides elastic tension, so that the split blade 120 is pressed towards the integrated blade 110, the shaking between the blade holder 121 and the integrated blade 110 is ensured, and the assembly stability is improved; simultaneously, this kind of mode of assembly can be that components of a whole that can function independently blade 120 and integrative blade 110 constitute a modular overall structure earlier (divide bag scissors mechanism 1 promptly), can realize dividing the whole dismouting of bag scissors mechanism 1, need not to dismouting integrative blade 110 and components of a whole that can function independently blade 120 one by one again when overhauing, the dismouting is more convenient, shortens the time of changing branch bag scissors mechanism 1, promotes maintenance efficiency, shortens down time.

In this embodiment, the gland 150 may also be provided with a second receiving groove 152 corresponding to the first receiving groove 1213, as shown in fig. 3 and 5, so that the first elastic member 140 and the gland 150 can be accurately positioned.

Some embodiments employ the structure shown in fig. 3. Referring to fig. 3, a fastening sleeve 160 (which may be a steel sleeve) is further disposed between the mounting sleeve 130 and the first mounting hole 112.

On the basis of the above embodiments, referring to fig. 3 to 5, in order to facilitate the position limitation and the fixation of the mounting sleeve 130, a shaft end of the mounting sleeve 130 forms a fixing flange 131, and the fixing flange 131 is fixedly connected with the integral blade 110 through a threaded connector (e.g., a screw).

On the basis of the above-described embodiment, referring to fig. 3 to 5, since the holder 121 and the integral insert 110 are rotationally engaged with each other, there is a frictional loss therebetween, and in order to reduce the wear rate and prolong the service life, a shim 170 is provided between the holder 121 and the integral insert 110. In specific implementation, the gasket 170 may be made of an elastic material such as a rubber material, or may be made of a rigid material, and the surface of the gasket 170 is covered with a smooth wear-resistant coating (e.g., a teflon coating), so that the friction force is reduced to the maximum extent while the smoothness of rotation is not affected.

On the basis of the above embodiment, the inner wall of the mounting sleeve 130 may be provided with an oil groove to reduce friction between the mounting sleeve 130 and the fixing shaft 230, improve smoothness of operation, and prolong the service life of the mounting sleeve 130.

Some embodiments employ a structure as shown in fig. 3-5. Referring to fig. 3 to 5, in order for the first elastic member 140 to provide effective elastic tension to the tool holder 121, it is necessary for the tool holder 121 to have a small degree of freedom to move along the axial direction of the mounting sleeve 130, so that the other axial end of the mounting sleeve 130 is fixedly connected with the gland 150 by a method including, but not limited to, screw connection.

Some embodiments employ a structure as shown in fig. 3-5. Referring to fig. 3 to 5, the first receiving groove 1213 is an annular groove distributed along the circumference of the second mounting hole 1212, and may be more contact points between the first elastic element 140 and the tool holder 121, so as to ensure stress balance. In specific implementation, the first elastic element 140 is a compression spring, and is directly clamped in the first receiving groove 1213.

Some embodiments employ the structure shown in fig. 4 and 5. Referring to fig. 4 and 5, the tool holder 121 is provided with a guide post 125, the blade body 122 is provided with a guide hole 126 adapted to a free end of the guide post 125, and the second elastic member 124 is sleeved on the outer periphery of the guide post 125. The guide post 125 can effectively avoid the problem that the second elastic member 124 inclines in the telescopic process, and meanwhile, the guide post cooperates with the guide hole 126, so that the stability of the position of the blade body 122 can be effectively ensured. In specific implementation, the root of the guiding column 125 is provided with an external thread, the tool holder 121 is provided with an internal threaded hole matched with the external thread, and the guiding column 125 is connected to the tool holder 121 in a threaded manner. In specific implementation, the second elastic member 124 may be a compression spring, a rubber sleeve, or the like, which is not illustrated, and fig. 4 and 5 show an embodiment in which the second elastic member 124 is a compression spring.

On the basis of the above embodiment, the guide column 125 is a stepped column, the large end of which is connected with the tool holder 121, the small end of which is adapted to the guide hole 126, and the stepped surface between the large end and the small end limits the blade body 122, so as to avoid the problem that the blade body 122 is deformed or broken because the middle upper part of the blade body 122 is too close to the tool holder 121.

Some embodiments employ a configuration as shown in fig. 5. Referring to fig. 5, the first limiting groove 1214 is formed on the first side of the tool holder 121 facing the integral blade 110, the guide post 125 is disposed in the first limiting groove 1214, and the side wall of the first limiting groove 121 contacts with the edge of the blade body 122 for limiting. The opening of the first limiting groove 1214 extends to a side edge of the blade holder 121 adjacent to the edge of the blade body 122, so as to ensure that the edge of the blade body 122 can be exposed outside the blade holder 121. During assembly, the contact limit can provide a pre-positioning function, so that the assembly efficiency between the blade body 122 and the tool holder 121 is improved; in the working process, the auxiliary pushing action force can be provided for the blade body 122, and the problem that the blade body 122 deforms and breaks in the shearing direction is solved.

Some embodiments employ the structure shown in fig. 5. Referring to fig. 5, the blade holder 121 is formed with a second limiting groove 1215 facing the first side of the one-piece blade 110, the second limiting groove 1215 is located at the lower end of the first limiting groove 1214, the depth of the first limiting groove 1214 is greater than that of the second limiting groove 1215, and the lower end of the blade body 122 is mounted in the second limiting groove 1215. The second limiting groove 1215 provides a limiting effect at the lower part of the blade body 122, and meanwhile, due to the fact that the depth of the second limiting groove 1215 is different from that of the first limiting groove 1214, a proper gap can be naturally generated between the blade body 122 and the blade holder 121 after the blade holder is assembled, an elastic floating space is provided, the whole structure is simple and compact, the layout is reasonable, and the use requirements can be well met.

Based on the same inventive concept, the embodiment of the present application further provides a bag dividing scissor device, referring to fig. 6 and 9, the bag dividing scissor device includes a frame 2, a driving mechanism 3, a transmission mechanism 4 and the bag dividing scissor mechanism 1; a fixed shaft is arranged on the frame 2, and the bag-dividing scissor mechanism 1 is in running fit with the frame 2; the driving end of the transmission mechanism 4 is connected with the driving mechanism 3, and the driven end of the transmission mechanism 4 is respectively connected with the integrated blade 110 and the tool holder 121. The transmission mechanism 4 is used for transmitting the power output by the driving mechanism 3 to the integrated blade 110 and the tool holder 121 respectively, and then realizing the shearing action of the integrated blade 110 and the tool holder 121.

Compared with the prior art, the bag dividing scissor device provided by the embodiment has the advantages that by adopting the bag dividing scissor mechanism 1, after the integrated blade 110 and the split blade 120 are assembled, the operation of complex interval adjustment is not needed, the effective shearing can be realized, the whole assembling and debugging time of the device is greatly saved, the manpower and material resources are saved, meanwhile, the service lives of the integrated blade 110 and the split blade 120 can be prolonged, the blade replacement frequency is reduced, and then the use cost is reduced.

Some embodiments employ a configuration as shown in fig. 9. Referring to fig. 9, the transmission mechanism 4 includes a first swing arm 410, a second swing arm 420, and a first link 430; the first swing arm 410 is provided with a first connecting point 411, a second connecting point 412 and a third connecting point 413 which are distributed in a triangular shape, the first connecting point 411 is hinged with the tool rest 121, and the second connecting point 412 is hinged with the frame 2; the second swing arm 420 is located below the first swing arm 410, the second swing arm 420 is provided with a fourth connecting point 421, a fifth connecting point 422 and a sixth connecting point 423 which are distributed in a triangular shape, the fourth connecting point 421 is hinged with the integrated blade 110, the first connecting point 411 and the fourth connecting point 421 respectively form a driven end of the transmission mechanism 4, and the sixth connecting point 423 forms a driving end of the transmission mechanism 4 and is hinged with the frame 2; one end of the first link 430 is hinged to the third connection point 413, and the other end is hinged to the fifth connection point 422; the driving mechanism 3 is a crank link mechanism, and a driven end of the driving mechanism 3 is fixedly connected with the sixth connecting point 423. Wherein the third connection point 413 is located below the first connection point 411 and the second connection point 412, and the sixth connection point 423 is located below the fourth connection point 421 and the fifth connection point 422.

In this embodiment, the sixth connection point 423 directly receives the driving force of the driving mechanism 3, the second swing arm 420 rotates around the sixth connection point 423 as an axis, and the fourth connection point 421 drives the integral blade 110 to rotate; the fifth connection point 422 drives the third connection point 413 through the first connection rod 430, so that the first swing arm 410 rotates around the second connection point 412 as an axis, and simultaneously drives the tool holder 121 to rotate through the first connection point 411, and finally, the shearing action is realized. The transmission mechanism 4 of the embodiment has a simple and compact overall structure, and can simultaneously drive the integrated blade 110 and the split blade 120 to rotate through one driving mechanism 3, so that the use amount of parts is reduced, and the production and maintenance costs are reduced.

On the basis of the above embodiment, in order to further improve the compactness of the structure, the first swing arm 410 is a triangular member, a lightening hole is arranged in the middle of the triangular member, and three top corners form a first connection point 411, a second connection point 412 and a third connection point 413 respectively; the first swing arm 410 is a V-shaped swing arm, the tip end of which faces downward and forms a sixth connection point 423, and the end portions of the two arms form a fourth connection point 421 and a fifth connection point 422, respectively.

Some embodiments employ a structure as shown in fig. 6 and 9. Referring to fig. 6 and 9, the driving mechanism 3 includes a driving wheel 310, a second link 320, a third link 330, and a fourth link 340; the driving wheel 310 is rotatably matched with the frame 2; the middle part of the second connecting rod 320 is rotatably matched with the frame 2, and one end of the second connecting rod 320 is hinged with the eccentric position of the driving wheel 310; one end of the third link 330 is hinged with the other end of the second link 320; one end of the fourth link 340 is hinged to the other end of the third link 330, and the other end is hinged to the sixth connection point 423. The kinematic pair of the driving mechanism 3 has simple structure and is easy to manufacture and assemble, so that the whole structure of the driving mechanism is simple and compact, and the production and use cost is favorably reduced.

Some embodiments employ a configuration as shown in fig. 9. Referring to fig. 9, in order to facilitate assembly with the first and second swing arms 410 and 420, the lower end of the integral blade 110 extends to one side to form a first connecting arm 111, and the lower end of the blade holder 121 extends to one side to form a second connecting arm 1211, and the first connecting arm 111 and the second connecting arm 1211 extend in substantially the same direction. The connection between the first connecting arm 111 and the integral blade 110 and between the second connecting arm 1211 and the tool holder 121 includes, but is not limited to, a threaded connection.

Some embodiments employ a structure as shown in fig. 6-9. Referring to fig. 6 to 9, for the installation requirements of different mechanisms, the rack 2 includes a first mounting bracket 210 and a second mounting bracket 220; the first mounting frame 210 is provided with a fixing shaft 230, the transmission mechanism 4 is also connected with the first mounting frame 210, the first mounting channel 132 and the second mounting channel 151 in the bag dividing scissor mechanism 1 are matched to form a main body mounting channel, and the fixing shaft 230 is rotatably inserted into the main body mounting channel; the second connecting rod 320 is connected to the second mounting bracket 220, the driving wheel 310 is connected to an output shaft of the driving motor, and the driving motor can be installed on the second mounting bracket 220 or on other frame structures.

Some embodiments employ a structure as shown in fig. 6-9. Referring to fig. 6 to 9, in the same bag dividing scissor device, two bag dividing scissor mechanisms 1 are exemplarily shown, the two bag dividing scissor mechanisms 1 are sleeved on the periphery of the same fixed shaft 230, and in order to adjust the distance between the two bag dividing scissor mechanisms 1, the bag dividing scissor device further includes two distance adjusting mechanisms 5 corresponding to the bag dividing scissor mechanisms 1 one by one. The spacing adjusting mechanism 5 comprises an adjusting shaft 510, a clamping block 520, a locking structure 530 arranged between two clamping arms of the clamping block 520, and two fixing plates 540 fixedly connected to two sides of the clamping block 520 respectively; the adjusting shaft 510 is fixed on the frame 2 and parallel to the fixing shaft 230, and the adjusting shaft 510 is provided with an adjusting scale 511; the clamping block 520 forms a first clamping space that clamps the adjusting shaft 510; the adjusting shaft 510 penetrates through the two fixing plates 540, and a second clamping space for clamping the bag dividing scissor mechanism 1 is formed between the two fixing plates 540 so as to limit the displacement of the bag dividing scissor mechanism 1 in the axial direction of the adjusting shaft 520; locking structure 530 can make first centre gripping space relax or tighten up, under the relaxed state, through removing clamp splice 520, just can drive the axial displacement of branch bag scissors mechanism 1 along fixed axle 230 that corresponds through fixed plate 540, adjust two intervals between branch bag scissors mechanism 1 then, adjust the back that targets in place, locking structure 530 tightens up first centre gripping space, clamp splice 520 can not take place the displacement again, then make branch bag scissors mechanism 1 obtain effective positioning, this kind of regulative mode enables two branch bag scissors mechanism 1 and adapts to the branch bag operation of not unidimensional wrapping bag. It should be noted that the number of the bag dividing scissors mechanisms 1 is not limited to two in the above embodiments, three or more bag dividing scissors mechanisms 1 can be simultaneously arranged on the same fixed shaft 230, and the number of the spacing adjusting mechanisms 5 is correspondingly increased or decreased, which is not illustrated herein.

It should be noted that, when the bag dividing scissors mechanism 1 is provided with a plurality of bag dividing scissors mechanisms, the connection between the first connection points 411, the connection between the fourth connection points 421 and the connection between the sixth connection points 423 of the different bag dividing scissors mechanisms 1 and the rack 2 are respectively realized through different connection shafts 240, so as to ensure that the transmission mechanism 4 can maintain reliable transmission, and meanwhile, the driving structure 3 can simultaneously drive the bag dividing scissors mechanisms 1 to cut, thereby improving the working efficiency and maintaining the compactness of the structure. In specific implementation, taking the first connecting point 411 as an example, the second connecting arm 1211 is formed with a U-shaped notch, the corresponding connecting shaft 240 is rotatably disposed in the U-shaped notch, the first connecting point 411 is fixedly connected to the connecting shaft 240, and can drive the connecting shaft 240 to synchronously move along with the swinging of the first swing arm 410, and this assembly manner can achieve the purpose of rapidly detaching the bag separating scissors mechanism 1 from the rack 2 when the bag separating scissors mechanism 1 is replaced, thereby further saving the maintenance time. The fourth connection point 421 and the sixth connection point 423 are assembled similarly, and will not be described in detail.

Some embodiments employ a structure as shown in fig. 6-9. Referring to fig. 6 to 9, one of the clamping arms of the clamping block 520 is provided with a screw hole 521, and the other clamping arm is provided with a through hole 522; the locking structure 530 comprises an adjusting rod 531, a sliding clamping piece 532 and a cam handle 533, wherein the free end of the adjusting rod 531 is provided with an internal thread matched with the screw hole 521, the free end of the adjusting rod 531 penetrates through the hole 522 and is fastened with the screw hole 521 in a threaded manner, the sliding clamping piece 532 is sleeved on one end portion, far away from the screw hole 521, of the adjusting rod 531 in a sliding manner, the cam handle 533 is hinged to one end, far away from the screw hole 521, of the adjusting rod 531, and the cam portion of the cam handle 533 can abut against one side, far away from the clamping block 520, of the sliding clamping piece 532. When the protruding portion of the cam handle 533 is tightly abutted to the sliding clamping piece 532 (as shown in fig. 8), the sliding clamping piece 532 pushes up the clamping arm located below, and the adjusting rod 531 plays a role of pulling the clamping arm located above downward, so that the two clamping arms 510 are adjusted, and finally the position is locked; and (4) reversely operating, and loosening the two clamping arms to move the corresponding distance adjusting mechanism 5.

Some embodiments employ a structure as shown in fig. 6-9. Referring to fig. 6 to 9, in a scenario where the bag splitting scissor mechanism 1 is provided with two, the frame 2 is further provided with an adjusting screw 550, the adjusting screw 550 is parallel to the adjusting shaft 510 and is rotatably engaged with the frame 2, the two clamping blocks 520 are respectively provided with inner screw holes with opposite screwing directions, the adjusting screw 550 is provided with two outer screw sections respectively adapted to the two inner screw holes, and an end portion of the adjusting screw 550 is further provided with an adjusting handwheel 560. By screwing the adjusting hand wheel 560, the two clamping blocks 520 can synchronously move towards or away from each other, and the spacing adjusting efficiency is improved.

The above description is only for the purpose of illustrating the preferred embodiments of the present invention and is not to be construed as limiting the invention, and any modifications, equivalents and improvements made within the spirit and principle of the present invention are intended to be included within the scope of the present invention.

Claims

1. A pair of bag separating scissors mechanisms is characterized by comprising an integrated blade and a split blade;

2. The bag splitting scissor mechanism of claim 1, wherein a first mounting hole is formed in a lower portion of the integral blade, a second mounting hole corresponding to the first mounting hole is formed in a lower portion of the knife holder, and a first accommodating slot is formed in the knife holder outside the second mounting hole and is open in a direction away from the integral blade;

divide bag scissors mechanism still includes:

the first elastic piece is arranged in the first accommodating groove; and

the gland forms a second installation channel corresponding to the first installation channel, the gland fixing cover is arranged on the opening side of the first accommodating groove, the first elastic piece is abutted to the gland, and the first elastic piece is configured with pre-tightening force enabling the gland to be far away from the tool rest.

3. The bag-dividing scissor mechanism according to claim 2, wherein the other axial end of the mounting sleeve is fixedly connected to the gland.

4. The bag-dividing scissor mechanism according to claim 2, wherein the first receiving groove is a circumferential groove disposed along a circumference of the second mounting hole.

5. The bag splitting scissors mechanism of claim 2, wherein the knife holder is provided with a guide post, the blade body is provided with a guide hole matched with the free end of the guide post, and the second elastic member is sleeved on the periphery of the guide post.

6. The bag splitting scissor mechanism of claim 5, wherein the blade holder defines a first retaining groove towards the first side of the integral blade, the guide post is disposed within the first retaining groove, and a side wall of the first retaining groove contacts and retains an edge of the blade body.

7. The bag splitting scissor mechanism of claim 6, wherein the blade carrier forms a second retaining groove towards the first side of the integral blade, the second retaining groove being located at a lower end of the first retaining groove, the first retaining groove having a depth greater than a depth of the second retaining groove, the lower end of the blade body being mounted within the second retaining groove.

8. A bag splitting scissors device, which is characterized by comprising a frame, a driving mechanism, a transmission mechanism and a bag splitting scissors mechanism according to any one of claims 1 to 7;

the bag dividing scissor mechanism is in running fit with the rack;

9. The bag splitting scissor apparatus of claim 8, wherein the transmission mechanism comprises:

one end of the first connecting rod is hinged with the third connecting point, and the other end of the first connecting rod is hinged with the fifth connecting point;

the driving mechanism is a crank connecting rod type mechanism, and the driven end of the driving mechanism is fixedly connected with the sixth connecting point.

10. The bag splitting scissor apparatus of claim 9, wherein the drive mechanism comprises:

the driving wheel is rotatably matched with the rack;