Folding device for hard box packaging machine

Abstract

A folding device for a hard box packaging machine comprises a second cam divider, a first transmission shaft, a first rotary disc, a second rotary disc, a first folding plate and a second folding plate, an output shaft of the second cam divider is connected with one end of the first transmission shaft, and the other end of the first transmission shaft is connected with one end of the second transmission shaft through a second coupler. The other end of the second transmission shaft is connected with a third transmission shaft after penetrating through the bearing seat assembly; the opposite sides of the first rotary disc and the second rotary disc are each provided with a plurality of notches, filler blocks are symmetrically installed on the two sides of each notch, every two adjacent filler blocks and one notch form a folding station, and cigarette packets are arranged in the folding stations. A first side plate and a second side plate are arranged on the opposite sides of the first rotary disc and the second rotary disc respectively, and the contact faces of the first folding plate and the second folding plate and the cigarette packet are inclined faces. The folded tobacco bales can be adjusted to be in a normal shape after being staggered.

Description

Technical Field

[0001] This invention relates to an improvement of a folding device for a hard-pack packaging machine, belonging to the field of tobacco packaging equipment, and particularly to a folding device for a hard-pack packaging machine. Background Technology

[0002] Hard-pack packaging machines are an indispensable piece of equipment in the modern tobacco industry. One of their core functions is to fold cigarette packs into a predetermined shape to ensure the aesthetics, airtightness, and stability of the packaging. As a key component of hard-pack packaging machines, the folding device is mainly responsible for folding the various parts of the cigarette pack (such as the cover, sides, etc.) into place to form a complete hard-pack package. In existing folding devices, the cigarette pack is folded from the start of the process and is directly shaped after folding. However, if the cigarette pack is misaligned during folding, it cannot be reshaped.

[0003] Chinese patent application CN202120446236.3, filed on March 2, 2021, discloses a folding device for the inner frame paper of a cigarette pack. The device includes a steering wheel, a long-side folding assembly, a short-side folding assembly, a curved base plate, and a transmission mechanism. The steering wheel comprises two symmetrically arranged rotating plates connected by a connecting column. The curved base plate is positioned below and adjacent to the steering wheel, with one end below the cigarette pack outlet and the other end below the cigarette pack inlet. The long-side folding assembly is positioned at one end of the curved base plate below the cigarette pack inlet, and the short-side folding assembly is positioned at one end of the curved base plate below the cigarette pack outlet. The transmission mechanism is located between the steering wheel and its housing. This design utilizes a rolling bearing and cam groove on an arched pressure rod to periodically open and close the movable end of the arched pressure rod during the steering wheel's movement, pressing down on the cigarette and ensuring smooth folding of the folding assembly. However, this design only completes the folding process and does not address the problem of misalignment of the folded cigarette pack, which cannot be adjusted.

[0004] The information disclosed in this background technology section is only intended to increase the understanding of the overall background of this patent application, and should not be regarded as an admission or any form of suggestion that the information constitutes the prior art already known to a person skilled in the art. Summary of the Invention

[0005] The purpose of this invention is to overcome the problem in the prior art that the cigarette pack cannot be adjusted after it is misaligned after folding, and to provide a folding device for hard box packaging machines that can adjust the misaligned cigarette pack to a normal shape after folding.

[0006] To achieve the above objectives, the technical solution of the present invention is: a folding device for a rigid box packaging machine, the folding device for the rigid box packaging machine comprising a second cam divider, a first drive shaft, a first turntable, a second turntable, a first folding plate and a second folding plate; The second cam divider is installed on the top of the frame. The output shaft of the second cam divider is connected to one end of the first drive shaft. The other end of the first drive shaft is connected to one end of the second drive shaft through the second coupling. The other end of the second drive shaft passes through the T-type bearing seat assembly and is connected to the third drive shaft. The outer side of the third drive shaft is connected to the inner side of the first turntable and the second turntable respectively. The T-type bearing seat assembly is installed inside the protective cover support. The bottom of the protective cover support is installed on the top of the frame. Multiple notches are provided on the opposite sides of the first turntable and the second turntable. Each notch is symmetrically equipped with a liner on both sides. Each pair of adjacent liners and a notch constitute a folding station, and the cigarette pack is placed in the folding station. The first turntable and the second turntable are respectively provided with a first side plate and a second side plate on opposite sides. A first protruding plate is installed on the side of the first side plate and a second protruding plate is installed on the side of the second side plate. A first control rod is provided on the inner side of the first protruding plate and a second control rod is provided on the inner side of the second protruding plate. A first control plate is installed on the lower side of the first control rod and its height is adjusted longitudinally along the side of the first control rod. A second control plate is installed on the lower side of the second control rod and its height is adjusted longitudinally along the side of the second control rod. A first folding plate is installed on the outer side of the first side plate, and a second folding plate is installed on the outer side of the second side plate. The contact surfaces of the first folding plate and the second folding plate with the cigarette pack are inclined surfaces. The input shaft of the second cam divider is connected to the top of the right helical bevel gear, the bottom of the right helical bevel gear meshes with the left helical bevel gear, the end of the left helical bevel gear away from the right helical bevel gear is connected to one end of the gear shaft, and the other end of the gear shaft passes through the transmission assembly.

[0007] The liner includes a mounting plate and a clamping plate. The mounting plate is bolted to the first turntable, and the clamping plate is mounted on the side of the notch. The clamping plate is perpendicular to the mounting plate. The cigarette pack clamps are located within two adjacent clamping plates.

[0008] The end of the clamping plate furthest from the first turntable is sloped.

[0009] The first turntable has the same structure as the second turntable, and the side of the first turntable is set as a plane at each notch.

[0010] The second drive shaft, the second coupling, and the first drive shaft are sequentially arranged inside the protective cover. The left and right ends of the protective cover are respectively connected to the protective cover support and the second cam divider, and the bottom of the protective cover is connected to the top of the frame assembly.

[0011] The first side plate and the second side plate are respectively provided with a first protective cover and a second protective cover by multiple sets of bolts on opposite sides, and the side of the protective cover support is connected to the side of the second protective cover.

[0012] The front and rear sides of the protective cover support are respectively equipped with a first cover plate and a second cover plate. The first cover plate is located on the outside of the first protective cover, and the second cover plate is located on the outside of the second protective cover.

[0013] The first control lever and the second control lever are mounted on the first convex plate and the second convex plate via guide posts; A spring is fitted around the outer side of the guide post, and the spring is located between the first side plate and the first control rod, and between the second side plate and the second control rod.

[0014] The first control board and the second control board are symmetrically arranged and have the same structure; The first control plate includes a vertical control plate and a horizontal control plate. The lower end of the outer side of the vertical control plate is connected to the side of the horizontal control plate. The vertical control plate has an oval hole for height adjustment. The bottom of the horizontal control plate is in contact with the cigarette pack.

[0015] The first folding plate and the second folding plate have the same structure and are arranged symmetrically. The second folding plate includes a folding connecting plate and a folding pressing plate. The inner side of the folding connecting plate is connected to one side of the folding pressing plate, and the other side of the folding pressing plate is a guide slope, which contacts both sides of the cigarette pack A.

[0016] Compared with the prior art, the beneficial effects of the present invention are as follows: 1. In the folding device of a hard-box packaging machine of the present invention, during application, the gear shaft transmits power to the left helical bevel gear, which then meshes with the right helical bevel gear to transmit power to the input shaft of the second cam divider; through the transmission shaft, the first and second turntables are finally driven to rotate according to a preset intermittent motion law. Before the cigarette pack enters the folding station, the first and second control plates press down on the upper surface of the cigarette pack to maintain the cigarette pack's posture before entering the folding station. Then, two lining blocks clamp the cigarette pack. The first and second folding plates are located above the two sides of the cigarette pack. When the cigarette pack rotates clockwise at the folding station, the two sides of the cigarette pack fold downwards under the action of the first and second folding plates. The advantages of this design include: First, during the folding station, the cigarette pack rotates clockwise, and the first and second folding plates fold the two sides of the cigarette pack box respectively. Secondly, after folding, the glue has not yet cured. At this time, the cigarette pack rotates in six stations under the clamping of two lining blocks. The two sides of the cigarette pack are continuously shaped under the clamping of the first and second side plates. After the shape is completed, the cigarette pack is transported to the subsequent mechanism, so that the cigarette pack can be adjusted after folding, reducing the occurrence of misalignment problems. Thirdly, the cigarette pack is placed between two liner blocks, which stably holds the cigarette pack during the folding process, ensuring that the cigarette pack will not shift or fall off during the intermittent movement of the turntable. At the same time, it avoids direct contact between the cigarette pack and the equipment, thereby reducing the possibility of the cigarette pack being scratched during the folding process. Fourthly, the second cam divider converts continuous rotational motion into intermittent rotational motion, enabling the first and second turntables to perform precise intermittent motion according to preset graduation angles and cycles, ensuring that each cigarette pack is folded at the correct time and position.

[0017] Therefore, the cigarette pack folded according to the present invention can be adjusted back to its normal shape after being misaligned.

[0018] 2. In the folding device for a hard-box packaging machine of the present invention, the liner includes a mounting plate and a clamping plate. The mounting plate is bolted to the first turntable, and the clamping plate is installed on the side of the notch, perpendicular to the mounting plate. The cigarette pack is clamped within two adjacent clamping plates, with the end of the clamping plate away from the first turntable being inclined. In application, the inclined design of the end of the clamping plate away from the first turntable allows the cigarette pack to be guided more smoothly into the folding plate when it enters the folding station. The cigarette pack is clamped between two adjacent clamping plates, ensuring that the cigarette pack remains stable during the rotation of the turntable and will not shift or fall due to vibration or inertia, thus ensuring the stability of subsequent folding operations. Therefore, the present invention provides convenient clamping and stable operation.

[0019] 3. In the folding device for a hard-pack packaging machine of the present invention, a first control plate and a second control plate are symmetrically arranged and have the same structure. The first control plate includes a vertical control plate and a horizontal control plate. The lower end of the outer side of the vertical control plate is connected to the side of the horizontal control plate. An oval hole for height adjustment is provided on the vertical control plate. The bottom of the horizontal control plate contacts the cigarette pack. In application, the oval hole on the vertical control plate allows the vertical height of the control plate to be adjusted longitudinally along the side of the control rod, enabling the control plate to be precisely adjusted according to the actual size and folding requirements of the cigarette pack, ensuring that the contact position between the control plate and the cigarette pack is always in the optimal state. Therefore, the present invention is convenient to adjust and precise to control.

[0020] 4. In the folding device for a hard-pack packaging machine of the present invention, the first folding plate and the second folding plate have the same structure and are symmetrically arranged; the second folding plate includes a folding connecting plate and a folding pressing plate, the inner side of the folding connecting plate is connected to one side of the folding pressing plate, and the other side of the folding pressing plate is a guide slope. The guide slope contacts both sides of the cigarette pack. In application, the guide slope allows the cigarette pack to enter the effective range of the folding pressing plate more smoothly, reducing folding defects caused by improper entry angle or positional deviation of the cigarette pack, while also allowing the two sides of the cigarette pack to fold gently at 90 degrees. Therefore, the present invention is convenient to fold, and the cigarette pack enters more smoothly. Attached Figure Description

[0021] Figure 1 It is a structural schematic diagram of the present invention.

[0022] Figure 2 This is a schematic diagram of the connection between the first side plate and the second side plate in this invention.

[0023] Figure 3 This is a rear view of the present invention.

[0024] Figure 4 This is a schematic diagram of the distribution of the liner blocks on the first turntable in this invention.

[0025] Figure 5 This is a schematic diagram of the tobacco pack entering the state in this invention.

[0026] Figure 6 This is a schematic diagram of the connection between the liner and the cigarette pack in this invention.

[0027] Figure 7 This is a schematic diagram of the guide post structure in this invention.

[0028] Figure 8 This is a schematic diagram of the structure of the second folded plate in this invention.

[0029] Figure 9 This is a schematic diagram of the working state of the present invention.

[0030] In the diagram: Frame 1, Transmission assembly 2, Second cam divider 401, First drive shaft 402, Second drive shaft 403, Third drive shaft 404, Second coupling 405, First turntable 406, Second turntable 407, First control board 408, Control vertical plate 4081, Control horizontal plate 4082, Second control board 409, First control lever 410, Second control lever 411, Spacer column 412, First side plate 413, Second side plate 414 First folding plate 415, second folding plate 416, folding connecting plate 4161, folding pressure plate 4162, liner 417, mounting plate 4171, clamping plate 4172, protective cover 418, protective cover 419, protective cover support 420, T-type bearing seat assembly 421, guide post 422, first cover plate 423, second cover plate 424, protective cover 425, gear shaft 426, left helical bevel gear 427, right helical bevel gear 428, cigarette pack A. Detailed Implementation

[0031] The present invention will be further described in detail below with reference to the accompanying drawings and specific embodiments.

[0032] See Figures 1 to 9A folding device for a rigid box packaging machine, the folding device for the rigid box packaging machine includes a second cam divider 401, a first drive shaft 402, a first turntable 406, a second turntable 407, a first folding plate 415 and a second folding plate 416. The second cam divider 401 is installed on the top of the frame 1. The output shaft of the second cam divider 401 is connected to one end of the first drive shaft 402. The other end of the first drive shaft 402 is connected to one end of the second drive shaft 403 through the second coupling 405. The other end of the second drive shaft 403 passes through the T-type bearing seat assembly 421 and is connected to the third drive shaft 404. The outer side of the third drive shaft 404 is connected to the inner side of the first turntable 406 and the second turntable 407 respectively. The T-type bearing seat assembly 421 is installed inside the protective cover support 420. The bottom of the protective cover support 420 is installed on the top of the frame 1. Multiple notches 429 are provided on the opposite sides of the first turntable 406 and the second turntable 407. Each notch 429 has a symmetrically installed liner block 417 on both sides. Each pair of adjacent liner blocks 417 and a notch 429 constitute a folding station. The cigarette pack A is placed in the folding station. The first turntable 406 and the second turntable 407 are respectively provided with a first side plate 413 and a second side plate 414 on opposite sides. A first protruding plate 4131 is installed on the side of the first side plate 413, and a second protruding plate 4141 is installed on the side of the second side plate 414. A first control rod 410 is provided on the inner side of the first protruding plate 4131, and a second control rod 411 is provided on the inner side of the second protruding plate 4141. A first control plate 408 is installed on the lower side of the first control rod 410, and the height of the first control plate 408 is adjusted longitudinally along the side of the first control rod 410. A second control plate 409 is installed on the lower side of the second control rod 411, and the height of the second control plate 409 is adjusted longitudinally along the side of the second control rod 411. A first folding plate 415 is installed on the outer side of the first side plate 413, and a second folding plate 416 is installed on the outer side of the second side plate 414. The contact surfaces of the first folding plate 415, the second folding plate 416 and the cigarette pack A are inclined surfaces. The input shaft of the second cam divider 401 is connected to the top of the right helical bevel gear 428, the bottom of the right helical bevel gear 428 meshes with the left helical bevel gear 427, the end of the left helical bevel gear 427 away from the right helical bevel gear 428 is connected to one end of the gear shaft 426, and the other end of the gear shaft 426 passes through the transmission assembly 2.

[0033] The liner 417 includes a mounting plate 4171 and a clamping plate 4172. The mounting plate 4171 is mounted on the first turntable 406 by bolts. The clamping plate 4172 is mounted on the side of the notch 429. The clamping plate 4172 is perpendicular to the mounting plate 4171. The cigarette pack A is clamped within two adjacent clamping plates 4172.

[0034] The end of the clamping plate 4172 away from the first turntable 406 is set in an inclined shape.

[0035] The first turntable 406 and the second turntable 407 have the same structure. The side of the first turntable 406 is set as a plane at each notch 429.

[0036] The second drive shaft 403, the second coupling 405, and the first drive shaft 402 are sequentially arranged inside the protective cover 425. The left and right ends of the protective cover 425 are respectively connected to the protective cover support 420 and the second cam divider 401. The bottom of the protective cover 425 is connected to the top of the frame assembly 1.

[0037] The opposite sides of the first side plate 413 and the second side plate 414 are respectively provided with a first protective cover 418 and a second protective cover 419 by multiple sets of bolts, and the side of the protective cover support 420 is connected to the side of the second protective cover 419.

[0038] The front and rear sides of the protective cover support 420 are respectively equipped with a first cover plate 423 and a second cover plate 424. The first cover plate 423 is located on the outside of the first protective cover 418, and the second cover plate 424 is located on the outside of the second protective cover 419.

[0039] The first control lever 410 and the second control lever 411 are mounted on the first convex plate 4131 and the second convex plate 4141 via guide posts 422; A spring is fitted on the outer side of the guide post 422, and the spring is located between the first side plate 413, the second side plate 414 and the protective cover support 420.

[0040] The first control board 408 and the second control board 409 are symmetrically arranged and have the same structure; The first control plate 408 includes a control vertical plate 4081 and a control horizontal plate 4082. The lower end of the outer side of the control vertical plate 4081 is connected to the side of the control horizontal plate 4082. The control vertical plate 4081 is provided with an oval hole for height adjustment. The bottom of the control horizontal plate 4082 is in contact with the cigarette pack A.

[0041] The first folding plate 415 and the second folding plate 416 have the same structure and are arranged symmetrically. The second folding plate 416 includes a folding connecting plate 4161 and a folding pressure plate 4162. The inner side of the folding connecting plate 4161 is connected to one side of the folding pressure plate 4162. The other side of the folding pressure plate 4162 is a guide slope 4163, which contacts both sides of the cigarette pack A.

[0042] The supplementary technical features of this invention are as follows: There are eight folding stations. After the cigarette pack A is rotated through six folding stations under the clamping of two liner blocks 417, it enters the next process. During this rotation, the two sides of the cigarette pack are continuously shaped under the clamping of the first side plate 413 and the second side plate 414, which reduces the number of folding stations, reduces the contact friction distance between the cigarette pack A and the device, and further reduces the misalignment problem caused by the deformation of the two sides of the cigarette pack.

[0043] Example 1: A folding device for a rigid box packaging machine includes a second cam divider 401, a first drive shaft 402, a first turntable 406, a second turntable 407, a first folding plate 415, and a second folding plate 416. The second cam divider 401 is mounted on the top of the frame 1. The output shaft of the second cam divider 401 is connected to one end of the first drive shaft 402. The other end of the first drive shaft 402 is connected to one end of a second drive shaft 403 via a second coupling 405. The other end of the second drive shaft 403 passes through a T-shaped bearing housing assembly 421 and is connected to a third drive shaft 404. The outer perimeter of the third drive shaft 404 is respectively connected to... The inner circumferences of the first turntable 406 and the second turntable 407 are connected. The T-shaped bearing seat assembly 421 is installed inside the protective cover support 420, and the bottom of the protective cover support 420 is installed on the top of the frame 1. Multiple notches 429 are opened on the opposite sides of the first turntable 406 and the second turntable 407. Each notch 429 has a symmetrically installed liner block 417 on both sides. Each pair of adjacent liner blocks 417 and a notch 429 constitutes a folding station. The cigarette pack A is placed in the folding station. The opposite sides of the first turntable 406 and the second turntable 407 are respectively provided with a first side plate 413 and a second side plate 414. A first protruding plate 4131 is installed on the side of the first side plate 413. A second protruding plate 4141 is installed on the side of the second side plate 414. A first control rod 410 is provided on the inner side of the first protruding plate 4131, and a second control rod 411 is provided on the inner side of the second protruding plate 4141. A first control plate 408 is installed on the lower side of the first control rod 410, and the height of the first control plate 408 is adjusted longitudinally along the side of the first control rod 410. A second control plate 409 is installed on the lower side of the second control rod 411, and the height of the second control plate 409 is adjusted longitudinally along the side of the second control rod 411. The outer side of the first side plate 4131... A first folding plate 415 is installed on the surface of the second side plate 414, and a second folding plate 416 is installed on the outer side of the second side plate 414. The contact surfaces of the first folding plate 415, the second folding plate 416 and the cigarette pack A are inclined surfaces. The input shaft of the second cam divider 401 is connected to the top of the right helical bevel gear 428. The bottom of the right helical bevel gear 428 meshes with the left helical bevel gear 427. The end of the left helical bevel gear 427 away from the right helical bevel gear 428 is connected to one end of the gear shaft 426. The other end of the gear shaft 426 passes through the transmission assembly 2.

[0044] In application: When the hard box packaging machine is running, power is transmitted through gear shaft 426 to the left helical bevel gear 427, which then meshes with the right helical bevel gear 428 to transmit power to the input shaft of the second cam divider 401. The second cam divider 401 converts continuous rotational motion into intermittent rotational motion, which is transmitted through the first drive shaft 402, the second coupling 405, the second drive shaft 403, and the T-type bearing housing assembly 421, and finally to the third drive shaft 404. The third drive shaft 404 drives the first turntable 406 and the second turntable 407 to rotate according to a preset intermittent motion pattern. Before the cigarette pack A enters the folding station, the first control plate 408 and the second control plate 409 press down on the upper surface of the cigarette pack A, controlling the cigarette pack A to remain in place before entering the folding station. The cigarette pack is held in place to prevent it from deforming and failing to enter the folding station smoothly. After the cigarette pack A enters the folding station between the two lining blocks 417, the two lining blocks 417 clamp the cigarette pack A to maintain its posture. The first folding plate 415 and the second folding plate 416 are located above the two sides of the cigarette pack. When the cigarette pack A rotates clockwise in the folding station, the two sides of the cigarette pack A fold downwards under the action of the first folding plate 415 and the second folding plate 416. During the process of rotating the cigarette pack for 6 stations under the clamping of the two lining blocks 417, the two sides of the cigarette pack A are shaped and fixed under the clamping of the first side plate 413 and the second side plate 414. The bottom surfaces of the first folding plate 415 and the second folding plate 416 are inclined, so that the two sides of the cigarette pack A are folded gently at 90°.

[0045] Example 2: Example 2 is basically the same as Example 1, except that: The liner 417 includes a mounting plate 4171 and a clamping plate 4172. The mounting plate 4171 is bolted to the first turntable 406. The clamping plate 4172 is mounted on the side of the notch 429 and is perpendicular to the mounting plate 4171. The cigarette pack A is clamped in two adjacent clamping plates 4172. The end of the clamping plate 4172 away from the first turntable 406 is inclined. The first turntable 406 and the second turntable 407 have the same structure. The side of the first turntable 406 is set as a plane corresponding to each notch 429.

[0046] In application: The end of the clamping plate 4172 away from the first turntable 406 is set in an inclined shape. The inclined design allows the cigarette pack A to be guided more smoothly into the folding plate when it enters the folding station. The cigarette pack A is clamped between two adjacent clamping plates 4172, which can ensure that the cigarette pack A remains stable during the rotation of the turntable and will not shift or fall due to vibration or inertia, thus ensuring the stability of subsequent folding operations.

[0047] Example 3: Example 3 is basically the same as Example 1, except that: The second drive shaft 403, the second coupling 405, and the first drive shaft 402 are sequentially arranged inside the protective cover 425. The left and right ends of the protective cover 425 are respectively connected to the protective cover support 420 and the second cam divider 401. The bottom of the protective cover 425 is connected to the top of the frame assembly 1. The opposite sides of the first side plate 413 and the second side plate 414 are respectively provided with the first protective cover 418 and the second protective cover 419 by multiple sets of bolts. The side of the protective cover support 420 is connected to the side of the second protective cover 419. The front and rear sides of the protective cover support 420 are respectively equipped with the first cover plate 423 and the second cover plate 424. The first cover plate 423 is located outside the first protective cover 418, and the second cover plate 424 is located outside the second protective cover 419.

[0048] In application: The protective cover 425 and the cover support 420 can effectively prevent dust, impurities and other contaminants from entering the device and extend the service life of the transmission components. At the same time, the closed structure of the protective cover 425 can also prevent lubricating oil from leaking out and keep the working environment clean. The first cover plate 423 and the second cover plate 424 are respectively installed on the outside of the first cover 418 and the second cover 419, which further enhances the protection effect and also makes it easy to disassemble the cover plates individually for convenient maintenance.

[0049] Example 4: Example 4 is basically the same as Example 1, except that: The first control lever 410 and the second control lever 411 are mounted on the first convex plate 4131 and the second convex plate 4141 via guide posts 422; a spring is sleeved on the outer side of the guide post 422, and the spring is located between the first side plate 413 and the first control lever 410, and between the second side plate 414 and the second control lever 411.

[0050] In application: The spring allows the first control lever 410 and the second control lever 411 to float elastically within a certain range. When the cigarette pack A enters the folding station, the control lever can automatically adjust its height according to the actual position of the cigarette pack, ensuring that the control lever is always in good contact with the cigarette pack, thereby improving the accuracy of the folding operation. At the same time, the buffering effect of the spring reduces the hard friction between the control lever and the cigarette pack, and reduces the wear rate of the control lever and the clamping plate.

[0051] Example 5: Example 5 is basically the same as Example 1, except that: The first control plate 408 and the second control plate 409 are symmetrically arranged and have the same structure. The first control plate 408 includes a control vertical plate 4081 and a control horizontal plate 4082. The lower end of the outer side of the control vertical plate 4081 is connected to the side of the control horizontal plate 4082. The control vertical plate 4081 is provided with an oval hole for height adjustment. The bottom of the control horizontal plate 4082 is in contact with the cigarette pack A.

[0052] In application: The oval hole on the control plate 4081 allows the control plate to be adjusted longitudinally along the side of the control rod, so that the control plate can be precisely adjusted according to the actual size and folding requirements of the cigarette pack A, ensuring that the contact position between the control plate and the cigarette pack A is always in the optimal state.

[0053] Example 6: Example 6 is basically the same as Example 1, except that: The first folding plate 415 and the second folding plate 416 have the same structure and are symmetrically arranged; the second folding plate 416 includes a folding connecting plate 4161 and a folding pressing plate 4162. The inner side of the folding connecting plate 4161 is connected to one side of the folding pressing plate 4162, and the other side of the folding pressing plate 4162 is a guide slope 4163, which contacts both sides of the cigarette pack A.

[0054] In application: the guide slope 4163 allows the cigarette pack A to enter the working range of the folding pressure plate 4162 more smoothly, reducing poor folding caused by improper entry angle or position deviation of the cigarette pack A, while making the two sides of the cigarette pack A fold gently at ninety degrees.

[0055] The above description is only a preferred embodiment of the present invention, and the protection scope of the present invention is not limited to the above embodiment. Any equivalent modifications or changes made by ordinary technicians in this field based on the contents disclosed in the present invention should be included in the protection scope recorded in the claims.

Claims

1. A folding device for a rigid box packaging machine, characterized in that: The folding device for the rigid box packaging machine includes a second cam divider (401), a first drive shaft (402), a first turntable (406), a second turntable (407), a first folding plate (415), and a second folding plate (416). The second cam divider (401) is installed on the top of the frame (1). The output shaft of the second cam divider (401) is connected to one end of the first drive shaft (402). The other end of the first drive shaft (402) is connected to one end of the second drive shaft (403) through the second coupling (405). The other end of the second drive shaft (403) passes through the T-type bearing seat assembly (421) and is connected to the third drive shaft (404). The outer side of the third drive shaft (404) is connected to the inner side of the first turntable (406) and the second turntable (407) respectively. The T-type bearing seat assembly (421) is installed inside the protective cover support (420). The bottom of the protective cover support (420) is installed on the top of the frame (1). Multiple notches (429) are provided on the opposite sides of the first turntable (406) and the second turntable (407). Each notch (429) is symmetrically equipped with a liner (417) on both sides. Each pair of adjacent liner (417) and a notch (429) constitute a folding station. The cigarette pack (A) is placed in the folding station. The first turntable (406) and the second turntable (407) are respectively provided with a first side plate (413) and a second side plate (414) on opposite sides. A first convex plate (4131) is installed on the side of the first side plate (413), and a second convex plate (4141) is installed on the side of the second side plate (414). A first control rod (410) is provided on the inner side of the first convex plate (4131), and a second control rod (411) is provided on the inner side of the second convex plate (4141). A first control plate (408) is installed at the lower end of the side of the first control rod (410), and the height of the first control plate (408) is adjusted longitudinally along the side of the first control rod (410). A second control plate (409) is installed at the lower end of the side of the second control rod (411), and the height of the second control plate (409) is adjusted longitudinally along the side of the second control rod (411). A first folding plate (415) is installed on the outer side of the first side plate (413), and a second folding plate (416) is installed on the outer side of the second side plate (414). The contact surfaces of the first folding plate (415), the second folding plate (416) and the cigarette pack (A) are inclined surfaces. The input shaft of the second cam divider (401) is connected to the top of the right helical bevel gear (428), the bottom of the right helical bevel gear (428) meshes with the left helical bevel gear (427), the end of the left helical bevel gear (427) away from the right helical bevel gear (428) is connected to one end of the gear shaft (426), and the other end of the gear shaft (426) passes through the transmission assembly (2).

2. The folding device for a rigid box packaging machine according to claim 1, characterized in that: The liner (417) includes a mounting plate (4171) and a clamping plate (4172). The mounting plate (4171) is mounted on the first turntable (406) by bolts. The clamping plate (4172) is mounted on the side of the notch (429). The clamping plate (4172) is perpendicular to the mounting plate (4171). The cigarette pack (A) is clamped within two adjacent clamping plates (4172).

3. A folding device for a rigid box packaging machine according to claim 2, characterized in that: The clamping plate (4172) is inclined at the end away from the first turntable (406).

4. A folding device for a rigid box packaging machine according to claim 3, characterized in that: The first turntable (406) and the second turntable (407) have the same structure. The side of the first turntable (406) is set as a plane at each notch (429).

5. A folding device for a rigid box packaging machine according to claim 1, characterized in that: The second drive shaft (403), the second coupling (405), and the first drive shaft (402) are sequentially arranged inside the protective cover (425). The left and right ends of the protective cover (425) are connected to the protective cover support (420) and the second cam divider (401) respectively. The bottom of the protective cover (425) is connected to the top of the frame assembly (1).

6. A folding device for a rigid box packaging machine according to claim 5, characterized in that: The first side plate (413) and the second side plate (414) are respectively provided with a first protective cover (418) and a second protective cover (419) by multiple sets of bolts on opposite sides. The side of the protective cover support (420) is connected to the side of the second protective cover (419).

7. A folding device for a rigid box packaging machine according to claim 6, characterized in that: The front and rear sides of the protective cover support (420) are respectively equipped with a first cover plate (423) and a second cover plate (424). The first cover plate (423) is located on the outside of the first protective cover (418), and the second cover plate (424) is located on the outside of the second protective cover (419).

8. A folding device for a rigid box packaging machine according to claim 1, characterized in that: The first control lever (410) and the second control lever (411) are mounted on the first convex plate (4131) and the second convex plate (4141) via guide posts (422); A spring is fitted on the outer side of the guide post (422), and the spring is located between the first side plate (413) and the first control rod (410), and between the second side plate (414) and the second control rod (411).

9. A folding device for a rigid box packaging machine according to claim 1, characterized in that: The first control board (408) and the second control board (409) are symmetrically arranged and have the same structure; The first control plate (408) includes a control vertical plate (4081) and a control horizontal plate (4082). The lower end of the outer side of the control vertical plate (4081) is connected to the side of the control horizontal plate (4082). The control vertical plate (4081) has an oval hole for height adjustment. The bottom of the control horizontal plate (4082) is in contact with the cigarette pack (A).

10. A folding device for a rigid box packaging machine according to claim 1, characterized in that: The first folding plate (415) and the second folding plate (416) have the same structure and are arranged symmetrically; The second folding plate (416) includes a folding connecting plate (4161) and a folding pressure plate (4162). The inner side of the folding connecting plate (4161) is connected to one side of the folding pressure plate (4162), and the other side of the folding pressure plate (4162) is a guide slope (4163). The guide slope (4163) contacts both sides of the cigarette pack (A).

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