Carton curling machine

Abstract

The utility model discloses a paper box curling machine which comprises a machine base and is characterized in that a rotating disc is arranged on the machine base, a feeding station, an edge folding station, an edge pre-curling station, an edge final-curling station and a discharging station are sequentially arranged on the rotating disc, the edge folding station is provided with an edge folding upper die capable of moving up and down in a matched mode, and the edge folding upper die is provided with an edge folding lower die capable of moving up and down in a matched mode. The pre-crimping station and the final crimping station are respectively provided with a pre-crimping upper die and a final crimping upper die which are capable of lifting, and a plurality of forming bottom dies are annularly arranged on the corresponding turntable; the forming bottom die comprises a fixed die plate and a movable die plate, a forming table is arranged on the fixed die plate, a forming groove is formed in the movable die plate, the movable die plate is arranged on the fixed die plate in an elastic lifting mode, the corresponding forming groove is matched with the forming table in a sleeved mode, and a paper box positioning block is arranged on the upper end face of the movable die plate. The paper box inner hemming device is reasonable in structure and stable in operation, and rapid forming of paper box inner hemming is achieved.

Description

Technical Field

[0001] The utility model relates to an improved invention in the field of paper box forming, in particular to an improved invention of a paper box curling machine. Background Art

[0002] Existing paper boxes are usually provided with outer curling or outer turning, but the outer turning has low structural strength and is easy to deform. If a sealing film is used, the connection stability is poor, and if a paper cover is used for covering, the sealing is poor. In order to improve the structural strength and covering sealing of the outer turning, the utility model arranges an inner curling on the basis of the outer turning, and provides a paper box curling machine with reasonable structure, stability and high efficiency. Utility Model Content

[0003] The technical problem to be solved by the utility model is to overcome the deficiencies of the prior art and provide a paper box curling machine with reasonable structure, stability and high efficiency.

[0004] In order to solve the above technical problems, the utility model is implemented by adopting the following technical scheme: the paper box curling machine includes a machine base, characterized in that: a turntable is provided on the machine base, and a loading station, a folding station, a pre-curling station, a final curling station and a discharging station are sequentially provided on the turntable, the folding station is equipped with a folding upper mold that can be raised and lowered, the pre-curling station and the final curling station are respectively equipped with a pre-curling upper mold and a final curling upper mold that can be raised and lowered, and a number of forming bottom molds are arranged on the corresponding turntable ring; the forming bottom mold includes a fixed template and a movable template, a forming table is provided on the fixed template, a forming groove is provided on the movable template, the movable template can be elastically lifted and lowered on the fixed template, the corresponding forming groove is sleeved and matched with the forming table, and the upper end surface of the movable template is provided with a paper box positioning block.

[0005] The folding upper die includes a folding tube and a pressure plate. The lower end of the folding tube can be matched and extended into the forming groove of the movable template. The pressure plate is an annular plate. The corresponding pressure plate can be elastically lifted and lowered and sleeved on the outside of the folding tube. The pressure plate cooperates with the movable template to press the edges.

[0006] A plurality of lifting guide rods and reset springs are arranged between the movable template and the fixed template, the lower ends of some guide rods pass through the turntable, and the folding station is provided with rollers located below the turntable, and the rollers are supported and cooperated with the lower ends of the guide rods.

[0007] A connecting seat is provided at the upper end of the folding cylinder, a buffer plate is provided between the connecting seat and the edge pressing plate, a plurality of lifting guide columns and a reset spring are provided between the buffer plate and the connecting seat and the edge pressing plate, and a limiting rod is provided on the buffer plate to limit the compression amount of the edge pressing plate.

[0008] A transition curling station is also arranged between the pre-curling station and the final curling station, and the transition curling station is equipped with a transition curling upper die.

[0009] The pre-curling upper die, the final curling upper die and the transition curling upper die all include a curling die, a movable template and the curling die are matched with each other, a curling groove is arranged on the curling die, a hollow is arranged in the middle of the curling die, and a positioning plate which can be elastically lifted and lowered is arranged in the corresponding hollow.

[0010] A positioning cylinder which can be elastically lifted and lowered is also arranged in the hollow of the pre-curling upper mold. The positioning cylinder can be matched and extended into the molding groove of the movable template. The positioning plate is located in the positioning cylinder.

[0011] Each upper mold is arranged on a lifting platform and is lifted and lowered synchronously. The lifting platform is equipped with a lifting column and a power source.

[0012] A small hole is provided on the forming table of the fixed template, a stripping ejector rod is movably inserted into the small hole, the stripping ejector rod is equipped with a reset spring, the discharging station is provided with a stripping ejector block, the stripping ejector block can be raised and lowered and is located below the turntable, and the stripping ejector block cooperates with the stripping ejector rod in transmission.

[0013] The loading station and the discharging station are respectively equipped with transfer robots.

[0014] The beneficial effect of the utility model is that the improved paper box curling machine adopts a turntable type to set the feeding station, folding station, pre-curling station, final curling station and discharging station, so as to realize the setting of inner curling on the flange of the paper box, and the inner curling is formed stably, efficiently, reasonably and orderly. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] The specific implementation of the utility model is further described in detail below with reference to the accompanying drawings.

[0016] Figure 1 It is a structural schematic diagram of the utility model.

[0017] Figure 2 It is a rear view of the structure of the utility model.

[0018] Figure 3 For this utility model Figure 1 Enlarged view of part A.

[0019] Figure 4 This is the structural diagram of the flanging die of the utility model. DETAILED DESCRIPTION

[0020] The accompanying drawings show the structure of the utility model, and the following further describes its relevant details in conjunction with the accompanying drawings. Figure 1-4The paper box curling machine comprises a base 1, a turntable 2 is arranged on the base 1, and the turntable 2 is equipped with a rotating power source to realize intermittent rotation. The rotating power source is preferably a motor. A loading station 3, a folding station 4, a pre-curling station 5, a final curling station 6 and a discharging station 7 are arranged on the turntable 2 in sequence. The folding station 4 is equipped with a folding upper die that can be lifted and lowered, and the pre-curling station 5 and the final curling station 6 are respectively equipped with a pre-curling upper die and a final curling upper die that can be lifted and lowered. The corresponding turntable 2 is ringed with a plurality of forming bottoms. Mold 8; the molding bottom mold 8 includes a fixed template 81 and a movable template 82, the fixed template 81 is provided with a molding table 83, the movable template 82 is provided with a molding groove 84, the movable template 82 can be elastically lifted and lowered on the fixed template 81, the corresponding molding groove 84 is sleeved and matched with the molding table 83, and the upper end surface of the movable template 82 is provided with a paper box positioning block 85, preferably, the paper box positioning blocks 85 are distributed in four directions, two by two, on the upper end surface edge of the movable template 82, and the position is adjustable to adapt to the size of the paper box flange.

[0021] The working principle of the utility model is that the turntable 2 rotates and passes through each station in turn. At the feeding station 3, the inverted flanged paper box is sent to the forming bottom mold 8, the corresponding paper box is located above the forming groove 84, the flange is placed on the upper end surface of the movable template 82, and is limited by the paper box positioning block 85; at the folding station 4, the folding upper mold descends to press the inner part of the flange, presses the paper box into the forming groove 84, and the corresponding outer part of the flange is folded upward; at the pre-curling station 5, the pre-curling upper mold performs pre-curling on the folded edge; at the final curling station 6, the final curling upper mold performs final curling on the folded edge of the pre-curled edge to form an inner curling edge; at the unloading station 7, the paper box with completed curling is taken out from the forming bottom mold 8.

[0022] As a further improved specific implementation, the folding upper die includes a folding tube 41 and a pressure plate 42. The lower end of the folding tube 41 can be matched and extended into the forming groove 84 of the movable template 82, and cooperate with the inner wall of the forming groove 84 to fold the outer part of the flange. The pressure plate 42 is an annular plate. The corresponding pressure plate 42 can be elastically lifted and sleeved on the outer side of the folding tube 41. The pressure plate 42 cooperates with the movable template 82 to press the outer side of the flange. With the downward pressure of the folding tube 41, it slowly enters the forming groove 84 to play the role of auxiliary folding. Among them, the pressure plate 42 is provided with an air avoidance groove to avoid the carton positioning block of the movable template 82.

[0023] As a further improved specific implementation method, a plurality of lifting guide rods 86 and reset springs are arranged between the movable template 82 and the fixed template 81 to realize elastic lifting and lowering, and the lower ends of some guide rods pass through the turntable 2. The folding station 4 is provided with a roller 47 located below the turntable 2, and the roller 47 is supported and cooperated with the lower end of the guide rod. Specifically, the lower end of the guide rod is connected by a cross bar. When it rotates to the folding station 4, the cross bar passes over the roller and is supported by the roller, thereby limiting the downward movement of the movable template 82 to cooperate with the folding forming.

[0024] As a further improved specific implementation method, a connecting seat 43 is provided at the upper end of the folding tube 41, and a buffer plate 44 is provided between the connecting seat 43 and the edge pressing plate 42. A plurality of lifting guide pillars 45 and a reset spring are respectively provided between the buffer plate 44 and the connecting seat 43 and the edge pressing plate 42, and a limiting rod 46 for limiting the compression amount of the edge pressing plate 42 is provided on the buffer plate, that is, the limiting rod 46 limits the minimum distance between the edge pressing plate 42 and the buffer plate 44, so as to control the maximum pressure to be constant and no longer continue to increase as the connecting seat and the folding tube 41 move downward.

[0025] As a further improved specific implementation method, a transition curling station 9 is further provided between the pre-curling station 5 and the final curling station 6. The transition curling station 9 is equipped with a transition curling upper mold. The added transition curling station plays the role of curling transition, so that the curling forming is gradual and the forming effect is guaranteed.

[0026] As a further improved specific implementation, the pre-curling upper die, the final curling upper die and the transition curling upper die all include a curling die 51, the curling die 51 is equipped with a heating tube for assisting curling forming, the upper end of the curling die 51 is connected to the die base, the movable template 82 is matched with the curling die 51, the curling die 51 is provided with a curling groove 52, the corresponding curling groove 52 of the pre-curling upper die, the transition curling upper die and the final curling upper die has a gradually transitioning R angle, the middle of the curling die 51 is provided with a hollow, and the corresponding hollow is provided with a positioning plate 53 that can be elastically lifted and lowered, and the specific positioning plate 53 is connected to the die base through a telescopic rod and a reset spring to achieve elastic lifting. When working, the curling die 51 moves down to touch the movable template 82, causing it to move down, and the corresponding upper end of the folded edge enters the curling groove 52 for curling, and the positioning plate 53 presses the paper box to position the paper box.

[0027] As a further improved specific implementation, a positioning cylinder 54 that can be elastically lifted and lowered is further provided in the hollow of the pre-curling upper mold. Specifically, the positioning cylinder 54 is connected to the mold base through a telescopic rod and a reset spring to achieve elastic lifting; the positioning cylinder 54 can be matched and extended into the molding groove 84 of the movable template 82, and the positioning plate 53 is located in the positioning cylinder 54. The function of the positioning cylinder 54 is to correct the position of the pre-curled paper box in the molding groove 84.

[0028] As a further improved specific implementation method, each upper mold is arranged on a lifting platform 10 and lifts synchronously. The lifting platform 10 is equipped with a lifting column 11 and a power source. The power source is preferably a cam transmission mechanism. The corresponding lifting column can be movably penetrated on the machine base 1. The lower end of the lifting column 11 is connected by a connecting plate and driven by the cam.

[0029] As a further improved specific implementation, a small hole 86 is provided on the forming table 83 of the fixed template 81, and a stripping ejector rod 87 is movably inserted in the small hole 86, and the stripping ejector rod 87 is equipped with a reset spring, and the discharging station 7 is provided with a stripping ejector block 71, which can be raised and lowered and is located below the turntable 2, and the stripping ejector block 71 is in transmission cooperation with the stripping ejector rod 87. During operation, the forming bottom mold 8 moves to the discharging station 7, and the stripping ejector block 71 moves upward to drive the stripping ejector rod 87 to overcome the reset spring and move upward, and the upper end of the stripping ejector rod 87 passes through the forming table 83, and the paper box with curled edges is ejected out of the forming groove 84, and the material is discharged in cooperation with the material taking robot.

[0030] As a further improved specific implementation method, the loading station 3 and the discharging station 7 are respectively equipped with transfer robots, which realize the feeding of the flanging paper box and the discharging of the curling formed paper box.

[0031] In summary, the above are only preferred embodiments of the present invention and are not intended to limit the protection scope of the present invention. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principles of the present invention shall be included in the protection scope of the present invention.

Claims

1. A paper box crimping machine, comprising a base, characterized in that: A turntable is provided on the machine base, and a loading station, a folding station, a pre-curling station, a final curling station and a discharging station are sequentially provided on the turntable. The folding station is equipped with a folding upper mold that can be raised and lowered, and the pre-curling station and the final curling station are respectively equipped with a pre-curling upper mold and a final curling upper mold that can be raised and lowered. A number of forming bottom molds are arranged on the corresponding turntable ring; the forming bottom mold includes a fixed template and a movable template, a forming table is provided on the fixed template, and a forming groove is provided on the movable template. The movable template can be elastically raised and lowered on the fixed template, and the corresponding forming groove is sleeved and matched with the forming table, and a paper box positioning block is provided on the upper end surface of the movable template.

2. The paper box crimping machine according to claim 1, characterized in that: The folding upper die includes a folding tube and a pressure plate. The lower end of the folding tube can be matched and extended into the forming groove of the movable template. The pressure plate is an annular plate. The corresponding pressure plate can be elastically lifted and lowered and sleeved on the outside of the folding tube. The pressure plate cooperates with the movable template to press the edges.

3. The paper box crimping machine according to claim 2, characterized in that: A plurality of lifting guide rods and reset springs are arranged between the movable template and the fixed template, the lower ends of some guide rods pass through the turntable, and the folding station is provided with rollers located below the turntable, and the rollers are supported and cooperated with the lower ends of the guide rods.

4. The paper box crimping machine according to claim 2, characterized in that: A connecting seat is provided at the upper end of the folding cylinder, a buffer plate is provided between the connecting seat and the edge pressing plate, a plurality of lifting guide columns and a reset spring are provided between the buffer plate and the connecting seat and the edge pressing plate, and a limiting rod is provided on the buffer plate to limit the compression amount of the edge pressing plate.

5. The paper box crimping machine according to claim 1, characterized in that: A transition curling station is also arranged between the pre-curling station and the final curling station, and the transition curling station is equipped with a transition curling upper die.

6. The paper box crimping machine according to claim 5, characterized in that: The pre-curling upper die, the final curling upper die and the transition curling upper die all include a curling die, a movable template and the curling die are matched with each other, a curling groove is arranged on the curling die, a hollow is arranged in the middle of the curling die, and a positioning plate which can be elastically lifted and lowered is arranged in the corresponding hollow.

7. The paper box crimping machine according to claim 6, characterized in that: A positioning cylinder which can be elastically lifted and lowered is also arranged in the hollow of the pre-curling upper mold. The positioning cylinder can be matched and extended into the molding groove of the movable template. The positioning plate is located in the positioning cylinder.

8. The paper box crimping machine according to claim 1 or 5, characterized in that: Each upper mold is arranged on a lifting platform and is lifted and lowered synchronously. The lifting platform is equipped with a lifting column and a power source.

9. The paper box crimping machine according to claim 1, characterized in that: A small hole is provided on the forming table of the fixed template, a stripping ejector rod is movably inserted into the small hole, the stripping ejector rod is equipped with a reset spring, the discharging station is provided with a stripping ejector block, the stripping ejector block can be raised and lowered and is located below the turntable, and the stripping ejector block cooperates with the stripping ejector rod in transmission.

10. The paper box crimping machine according to claim 1, characterized in that: The loading station and the discharging station are respectively equipped with transfer robots.

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