A carton cover folding device and method

Abstract

The present invention discloses a carton flap folding device and method, the device comprises a frame, a lifting mechanism is installed on the frame through a mounting plate, a folding mechanism is connected and installed below the lifting mechanism; the folding mechanism comprises a lifting folding frame fixedly connected to the bottom of the lifting mechanism, a guide plate is fixedly connected below the lifting folding frame, and a folding rod extending outward is installed on the outer edge of the lifting folding frame; when the lifting mechanism descends, the guide plate moves toward the inside of the carton, and the lifting folding frame drives the folding rod to move downward, so that the carton flap is folded toward the outer wall of the carton. Beneficial effect: the device can simultaneously complete the folding of two pairs of flaps of the carton, not only has a simple structure and concise movements, but also realizes unmanned operation, improves the production efficiency of the enterprise, and effectively assists the automation upgrade of the production line of the tobacco enterprise; it can be organically combined with the existing production equipment of the pre-pressing baler to improve the automation in the tobacco production process.

Description

Technical Field

[0001] The invention belongs to the technical field of automatic carton forming in the tobacco industry, relates to a process of arranging cartons before pre-pressing and packaging, and in particular to a carton flap folding device and method. Background Art

[0002] On the leaf threshing and re-drying line in tobacco production enterprises, some cartons transported to the pre-pressing and baling machine will have the carton flaps upright or even tilted inward, which will affect the delivery of the cartons to the pre-pressing machine station. At the same time, when the material box falls and inserts into the carton, the side of the carton will be folded, causing the carton to be cracked and torn, thus affecting the subsequent packing and packaging process.

[0003] The traditional solution is for one or two people to manually fold down and tighten the carton flap in front of the pre-pressing baler. This method has high labor costs and low automation, which does not match the requirements of building an efficient and automated production line. At present, there are no automated application cases in domestic tobacco companies.

[0004] The Chinese utility model patent (application number: 202020441158.3) discloses a carton folding and opening device. The device requires the use of a clip to hold the box cover during packing, and then performs manual packing. It cannot cooperate with the work of the pre-pressing baler, and has low efficiency and is not suitable for industrial production.

[0005] The Chinese utility model patent (201922477454.9) discloses a carton cover support and folding device, which opens the cover from the side and then pushes the items into the box. The device cannot cooperate with the pre-pressing baler and cannot meet the applicable needs.

[0006] At present, there is no relevant mechanical equipment that can meet the demand for arranging box covers before pre-pressing and packaging. In order to cooperate with pre-pressing and packaging machines and increase production efficiency, reduce labor intensity, and reduce labor costs, there is an urgent need for a box cover arranging device before pre-pressing and packaging. Summary of the invention

[0007] The purpose of the present invention is to overcome the deficiencies in the prior art and to provide a carton flap folding device.

[0008] To achieve the above object, the present invention adopts the following technical solutions:

[0009] A carton flap folding device comprises a frame, a lifting mechanism is installed on the frame through a mounting plate, and a folding mechanism is connected and installed below the lifting mechanism;

[0010] The folding mechanism comprises a lifting folding frame fixedly connected to the bottom of the lifting mechanism, a guide plate is fixedly connected to the bottom of the lifting folding frame, and a folding rod extending outward is installed on the outer edge of the lifting folding frame;

[0011] When the lifting mechanism descends, the guide plate moves toward the inside of the carton, and the lifting folding frame drives the folding rod to move downward, so that the carton flap is folded toward the outer wall of the carton.

[0012] Furthermore, the folding mechanism also includes a folding drive mechanism, one end of which is fixed to the lifting mechanism, and the other end is connected to a folding rod, the folding rod is movably mounted on the lifting folding frame through a mounting seat, and one end of the folding rod is movably connected to the folding drive mechanism;

[0013] When the folding drive mechanism is extended or retracted, the folding rod rotates with the mounting seat as the axis.

[0014] Furthermore, the lifting folding frame is a square frame structure and is consistent with the shape of the carton, and the folding rod is arranged on each frame of the lifting folding frame.

[0015] Furthermore, a crossbeam connected to the frame is arranged in the middle of the lifting and folding frame, a mounting support is fixedly installed in the center of the crossbeam, and the upper part of the mounting support is fixedly connected to the movable part of the lifting drive mechanism; lifting guide rod connecting blocks are symmetrically arranged on both sides of the mounting support, and the bottom end of the lifting guide rod is fixed to the lifting and folding frame through the lifting guide rod connecting block, and the guide rod is perpendicular to the lifting and folding frame.

[0016] Furthermore, the folding rod includes a vertical rod A and a vertical rod B, one end of the vertical rod A and the vertical rod B are connected with a cross rod, the vertical rod A and the vertical rod B are arranged in parallel, the vertical rod A is longer than the vertical rod B, the other end of the vertical rod B is fixed to the vertical rod A through a connecting rod, the connecting rod passes through the vertical rod A and the vertical rod B, and the protrusions on the outside of the vertical rod A and the vertical rod B at both ends are movably connected to the mounting seat, and the other end of the vertical rod A is connected to the folding guide rod through the lifting guide rod and is connected to the folding drive mechanism.

[0017] Furthermore, the lifting mechanism includes a lifting drive mechanism fixedly mounted on a mounting plate, and a movable component of the lifting drive mechanism passes through the mounting plate and is fixedly connected to the lifting folding frame.

[0018] Furthermore, the lifting mechanism also includes a lifting guide rod that passes through the mounting plate and is fixedly connected to the lifting folding frame. When the lifting mechanism moves, the lifting guide rod moves up and down through the guide hole on the mounting plate.

[0019] Furthermore, the lifting mechanism also includes a square frame-shaped connecting bracket, which is located in the center of the lifting folding frame and close to the inner side of the two corresponding frame of the lifting guide rod, and the plane of the connecting bracket is perpendicular to the lifting guide rod; one end of the folding drive mechanism is fixed on the connecting bracket; the fixed end included in the folding drive mechanism is fixed to the other two opposite frame of the connecting bracket through a connecting component, and each frame fixes two adjacent folding drive mechanisms, so that the folding drive mechanism is parallel to the guide rod and perpendicular to the plane of the connecting bracket.

[0020] Furthermore, the folding drive mechanism and the lifting drive mechanism are any one of a pneumatic cylinder, an electric cylinder, and a gear rack.

[0021] Another object of the present invention is to provide a flap folding method using the carton flap folding device, comprising the following steps:

[0022] S0. First install the carton flap folding device on the carton conveying mechanism, and then adjust the device to put it into standby mode;

[0023] S1. Cartons delivered to the destination

[0024] Cartons are transported to the underside of the rack, just below the folding mechanism;

[0025] S2. Lift the folding frame to the right position

[0026] The lifting mechanism drives the folding mechanism downward until it reaches the horizontal position of the carton entrance;

[0027] S3. Fold the carton cover

[0028] The folding mechanism drives the folding rod to rotate through the folding drive mechanism. When the folding rod rotates outward, it drives the carton flap to fold down and press below the carton entrance plane, and then maintains the state of the folding rod to maintain pressure;

[0029] S4. Device reset

[0030] After the pressure holding is completed, the lifting mechanism returns to its position first to drive the lifting folding frame to retract, and then the folding mechanism driving mechanism returns to its position to drive the folding rod to rotate, completing an automatic folding of the carton flap.

[0031] Working principle:

[0032] The present invention drives the lifting folding frame to move up and down through the lifting mechanism, so that the folding mechanism on the lifting folding frame presses the upright carton cover pages toward the periphery of the carton body during the descending process, so that the carton cover pages are folded and opened toward the periphery of the box body.

[0033] The flap folding mechanism can simultaneously complete the folding of two pairs of cover pages of the carton.

[0034] Beneficial effects:

[0035] The present invention can simultaneously complete the folding of two pairs of flaps of a carton, and not only has a simple structure and concise actions, but also automatically completes the action of folding the carton covers, realizes unmanned operation, improves the production efficiency of the enterprise, and effectively assists the automation upgrade of the production line of tobacco enterprises.

[0036] The present invention can be organically combined with existing production equipment of pre-pressing balers to improve the automated production line in the tobacco production process. BRIEF DESCRIPTION OF THE DRAWINGS

[0037] Figure 1 It is a structural schematic diagram of the present invention.

[0038] Figure 2 It is a side structural schematic diagram of the present invention.

[0039] Figure 3 A schematic diagram of the rack structure.

[0040] Figure 4 It is a schematic diagram of the connection between the lifting folding frame and the connecting bracket and the guide rod.

[0041] Figure 5 It is a structural schematic diagram of the folding drive mechanism and the folding rod.

[0042] Figure 6 It is a structural schematic diagram of the lifting drive mechanism.

[0043] Figure 7 It is a schematic diagram of the operation of pressing down the flip cover.

[0044] Reference numerals:

[0045] Frame 1, mounting plate 11, guide hole 111, mounting hole 112, lifting mechanism 2, lifting drive mechanism 21, lifting guide rod 22, connecting bracket 23, connecting component 231, folding mechanism 3, lifting folding frame 31, guide plate 32, folding rod 33, vertical rod A331, vertical rod B332, cross bar 333, connecting rod 334, folding guide rod connecting block 335, folding drive mechanism 34, folding guide rod 341, mounting seat 35, lifting guide rod connecting block 36, mounting support 37, carton 4, conveyor 5. DETAILED DESCRIPTION

[0046] The technical solution of the present invention is further described in detail below in conjunction with specific embodiments and drawings, but the present invention is not limited to the following technical solution. Based on the embodiments in the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention. In the following description, in order to clearly show the structure and working mode of the present invention, the drawings will be used as a reference and described with the help of many directional terms, but the words "front", "back", "left", "right", "up", "down" and so on should be understood as convenient terms, and should not be understood as restrictive terms.

[0047] Example

[0048] like Figure 1-7 As shown, a carton 4 flap folding device can be installed on a carton 4 conveyor 5 in front of a tobacco pre-pressing baler, comprising a frame 1, a lifting mechanism 2 is installed on the frame 1 through a mounting plate 11, and a folding mechanism 3 is connected and installed below the lifting mechanism 2;

[0049] The frame 1 includes four legs and a top bracket, the legs are fixed on the ground, and the internal carton 4 conveyor 5 passes between the two legs. A crossbeam is installed on the top bracket, and the two crossbeams are arranged in parallel. The mounting plate 11 is fixedly installed on the crossbeam. The mounting plate 11 has a mounting hole 112 in the center for the movable parts of the lifting drive mechanism 21 to pass through. Guide holes 111 are also arranged on both sides of the through hole of the mounting plate 11 for the guide rod to pass through and play a guiding role. The fixed end included in the lifting drive mechanism 21 is fixed above the mounting hole 112 on the mounting plate 11.

[0050] The lifting mechanism 2 further includes a lifting guide rod 22 that passes through the mounting plate 11 and is fixedly connected to the lifting folding frame 31 . When the lifting mechanism 2 moves, the lifting guide rod 22 moves up and down through the guide hole 111 on the mounting plate 11 .

[0051] The lifting mechanism 2 further comprises a connecting bracket 23 in a square frame shape, and the lifting guide rod 22 is installed on the inner side of two corresponding frames of the connecting bracket 23 located at the center of the lifting folding frame 31 and close to the lifting guide rod 22. The connecting bracket 23 can move up and down together with the lifting guide rod 22. On the other two opposite frames of the connecting bracket 23, the fixed ends of the folding drive mechanism 34 are fixed to the frames through the connecting parts 231, and each frame fixes two adjacent folding drive mechanisms 34, so that the folding drive mechanism 34 is parallel to the guide rod and perpendicular to the plane of the connecting bracket 23.

[0052] The folding mechanism 3 includes a lifting folding frame 31, which is consistent with the shape of the carton 4 and smaller than the size of the entrance of the carton 4. The lifting folding frame 31 is a square frame structure with a crossbeam connected to the frame in the middle, and a mounting support 37 is fixedly installed in the center of the crossbeam. The upper part of the mounting support 37 is fixedly connected to the movable part of the lifting drive mechanism 21; lifting guide rod connecting blocks 36 are symmetrically arranged on both sides of the mounting support 37, and the bottom end of the lifting guide rod 22 is fixed to the lifting folding frame 31 through the lifting guide rod connecting block 36, and the guide rod is perpendicular to the lifting folding frame 31.

[0053] When the lifting driving mechanism 21 moves up and down, the lifting folding frame 31 is driven to move up and down.

[0054] A guide plate 32 is fixedly installed below the lifting folding frame 31 , and the shape and size of the guide plate 32 are consistent with those of the lifting folding frame 31 .

[0055] The folding mechanism 3 also includes a folding rod 33 arranged at the center of each frame of the lifting folding frame 31. The folding rod 33 is movably connected to the mounting seat 35. With the mounting seat 35 as the boundary, one end of the folding rod 33 is located at the outer edge of the lifting folding frame 31, and the longest part exceeds the boundary of the entrance of the carton 4. When pressed down, it can ensure that the farthest end of the folding rod 33 is as close as possible to the flap of the carton 4. The folding rod 33 can rotate around the mounting seat 35, so that the folding rod 33 can move upward and downward to fold the flap of the carton 4. The part of the folding rod 33 located inside the lifting folding frame 31 is connected to the movable part of the driving mechanism.

[0056] The folding mechanism 3 further includes a folding driving mechanism 34, one end of which is fixed to the connecting bracket 23 of the lifting mechanism 2, and the other end is movably connected to the folding rod 33;

[0057] When the folding drive mechanism 34 is extended or retracted, the folding rod 33 can rotate around the mounting seat 35 so that the other end of the folding rod 33 can move up and down.

[0058] When the lifting mechanism 2 descends, the guide plate 32 moves toward the inside of the carton 4 , and the lifting folding frame 31 drives the folding rod 33 to move downward, so that the flap of the carton 4 is folded toward the outer wall of the carton 4 .

[0059] The folding mechanism 3 can be a plate type, a frame type, or other structures that can press the box cover.

[0060] Preferably, the folding rod 33 includes a vertical rod A331 and a vertical rod B332, one end of the vertical rod A331 and the vertical rod B332 are connected with a cross rod 333, the vertical rod A331 and the vertical rod B332 are arranged in parallel, the vertical rod A331 is longer than the vertical rod B332, the other end of the vertical rod B332 is fixed to the vertical rod A331 by a connecting rod 334, the connecting rod 334 passes through the vertical rod A331 and the vertical rod B332, and the protrusions at both ends protruding from the outside of the vertical rod A331 and the vertical rod B332 are movably connected to the mounting seat 35, and the other end of the vertical rod A331 is connected to the folding guide rod 341 through the lifting guide rod 335 and is connected to the folding drive mechanism 34.

[0061] The folding drive mechanism 34 and the lifting drive mechanism 21 can be any one of a pneumatic cylinder, an electric cylinder, and a gear rack.

[0062] Working method:

[0063] First, install the carton 4 flap folding device on the carton 4 conveyor 5, and then adjust the device to put it into standby state;

[0064] S1. Carton 4 delivered to the destination

[0065] The carton 4 is transported to the bottom of the frame 1, directly below the folding mechanism 3;

[0066] S2. Lifting folding frame 31 in place

[0067] The lifting mechanism 2 drives the folding mechanism 3 downward until it reaches the horizontal position of the entrance of the carton 4;

[0068] S3. Folding carton 4 flaps

[0069] The folding mechanism 3 drives the folding rod 33 to rotate through the folding driving mechanism 34. When the folding rod 33 rotates outward, it drives the flip cover of the carton 4 to fold down and press down to the bottom of the inlet plane of the carton 4, and then maintains the state of the folding rod 33 to maintain pressure;

[0070] S4. Device reset

[0071] After the pressure holding is completed, the lifting mechanism 2 first returns to drive the lifting folding frame 31 to be recovered, and then the folding mechanism 3 drives the folding rod 33 to rotate, completing an automatic folding of the carton 4 cover.

Claims

1. A carton flap folding device, comprising a frame (1), characterized in that: A lifting mechanism (2) is installed on the frame (1) via a mounting plate (11), and a folding mechanism (3) is connected and installed below the lifting mechanism (2); The folding mechanism (3) comprises a lifting folding frame (31) fixedly connected to the bottom of the lifting mechanism (2), a guide plate (32) fixedly connected below the lifting folding frame (31), and a folding rod (33) extending outwardly is installed on the outer edge of the lifting folding frame (31); When the lifting mechanism (2) descends, the guide plate (32) moves toward the inside of the carton (4), and the lifting folding frame (31) drives the folding rod (33) to move downward, so that the flap of the carton (4) is folded toward the outer wall of the carton (4); The folding mechanism (3) further comprises a folding drive mechanism (34), one end of the folding drive mechanism (34) being fixed to the lifting mechanism (2) and the other end being connected to a folding rod (33), the folding rod (33) being movably mounted on the lifting folding frame (31) via a mounting seat (35), and one end of the folding rod (33) being movably connected to the folding drive mechanism (34); When the folding drive mechanism (34) is extended or retracted, the folding rod (33) rotates with the mounting seat (35) as the axis; The lifting folding frame (31) is a square frame structure and has the same shape as the carton (4); the folding rod (33) is arranged on each frame of the lifting folding frame (31); The folding rod (33) comprises a vertical rod A (331) and a vertical rod B (332), one end of each of the vertical rods A (331) and B (332) being connected to a cross rod (333), the vertical rod A (331) and B (332) being arranged in parallel, the vertical rod A (331) being longer than the vertical rod B (332), the other end of the vertical rod B (332) being fixed to the vertical rod A (331) via a connecting rod (334), the connecting rod (334) passing through the vertical rod A (331) and B (332), the protrusions at both ends protruding from the outside of the vertical rod A (331) and B (332) being movably connected to a mounting seat (35), the other end of the vertical rod A (331) being connected to a folding guide rod (341) via a folding guide rod connecting block (335) and connected to a folding drive mechanism (34); The lifting mechanism (2) comprises a lifting drive mechanism (21) fixedly mounted on a mounting plate (11), wherein a movable part of the lifting drive mechanism (21) passes through the mounting plate (11) and is fixedly connected to a lifting folding frame (31); The lifting mechanism (2) further comprises a lifting guide rod (22) passing through the mounting plate (11) and fixedly connected to the lifting folding frame (31); when the lifting mechanism (2) moves, the lifting guide rod (22) moves up and down through the guide hole (111) on the mounting plate (11); The lifting mechanism (2) further comprises a square frame-shaped connecting bracket (23), one end of the lifting guide rod (22) being fixedly connected to the connecting bracket (23) at the inner side of two corresponding frames located at the center of the lifting folding frame (31) and close to the lifting guide rod (22), and the plane of the connecting bracket (23) is perpendicular to the lifting guide rod (22); one end of the folding drive mechanism (34) is fixed to the connecting bracket (23); the fixed end of the folding drive mechanism (34) is fixed to the other two opposite frames of the connecting bracket (23) through a connecting component (231), and each frame is fixed with two adjacent folding drive mechanisms (34), so that the folding drive mechanism (34) is parallel to the guide rod and perpendicular to the plane of the connecting bracket (23).

2. The flap folding device according to claim 1, characterized in that: A crossbeam connected to the frame is arranged in the middle of the lifting folding frame (31), a mounting support (37) is fixedly installed in the center of the crossbeam, and the upper part of the mounting support (37) is fixedly connected to the movable part of the lifting drive mechanism (21); lifting guide rod connecting blocks (36) are symmetrically arranged on both sides of the mounting support (37), and the bottom end of the lifting guide rod (22) is fixed to the lifting folding frame (31) through the lifting guide rod connecting blocks (36), and the guide rod is perpendicular to the lifting folding frame (31).

3. The flap folding device according to claim 1, characterized in that: The folding drive mechanism (34) and the lifting drive mechanism (21) are any one of a pneumatic cylinder, an electric cylinder, and a gear rack.

4. A method for flap folding of a carton using the flap folding device according to any one of claims 1 to 3, characterized in that: The following steps are involved: S0. First install the carton (4) flap folding device on the carton conveying mechanism, and then adjust the device so that the device enters the standby state; S1. Cartons (4) delivered to the destination The carton (4) is transported to the bottom of the frame (1) and is located directly below the folding mechanism (3); S2. Lift the folding frame (31) to the correct position The lifting mechanism (2) drives the folding mechanism (3) downward until it reaches a horizontal position at the entrance of the carton (4); S3. Folding carton (4) Flip cover The folding mechanism (3) drives the folding rod (33) to rotate through the folding driving mechanism (34), and when the folding rod (33) rotates outward, it drives the flap of the carton (4) to fold down and press down to below the entrance plane of the carton (4), and then maintains the state of the folding rod (33) to maintain pressure; S4. Device reset After the pressure holding is completed, the lifting mechanism (2) first returns to its original position to drive the lifting folding frame (31) to be retracted, and then the driving mechanism of the folding mechanism (3) returns to its original position to drive the folding rod (33) to rotate, thereby completing one automatic folding of the cover of the carton (4).

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