Top lug part forming device

Abstract

The invention discloses a top lug part forming device, belongs to the technical field of packaging carton top lug part forming devices, and solves the problems that a PE layer of a carton body material is easy to deform and activate, the sealing effect is influenced, and a hot air heating mechanism is large in occupied space, high in energy consumption, poor in carton sealing and forming effect and low in processing efficiency in an existing hot air heating mode. Comprising a top lug forming rack arranged above a paper box conveying mechanism, a forming mechanism connecting back plate is arranged on the top lug forming rack, an annular forming mechanism circulating guide rail is arranged on the forming mechanism connecting back plate, and a plurality of top lug forming mechanisms are movably arranged on the forming mechanism circulating guide rail; the top lug forming mechanism is connected with a top lug forming servo motor through a forming transmission mechanism; the box entering end of the top lug forming rack is provided with a top sealing and smoothing mechanism, a smoothing anti-deformation supporting frame and a sealing glue gun. The full-automatic box sealing machine is reasonable in design, compact in structure, reasonable in space utilization, low in equipment energy consumption, good in box sealing forming effect, high in machining efficiency and high in applicability, and the top lug parts are bonded through hot melt adhesive.

Description

Technical Field

[0001] The invention belongs to the technical field of top ear forming devices for packaging paper boxes, and in particular relates to a top ear forming device. Background Art

[0002] At present, the top ear part of the square brick-shaped paper box packaging is formed by heating the surface with hot air and then bonding them together. This traditional operation method may cause the PE layer of the packaging paper box body material to be denatured and activated during the hot air heating process, affecting the sealing effect of the packaging. In addition, the existing conventional hot air heating mechanism is arranged on both sides of the paper box conveying mechanism, which not only occupies a large space and has high equipment energy consumption, but also has poor sealing and forming effects and low processing efficiency. Therefore, it is necessary to improve the molding device of the top ear part of the packaging paper box in the prior art. Summary of the invention

[0003] The present invention is aimed at the above-mentioned problems and provides a top ear forming device which utilizes hot melt adhesive to bond the top ear, can avoid affecting the stability of the box material of the packaging paper box, has reasonable space utilization, low equipment energy consumption, good box sealing and forming effect, high processing efficiency, and can improve the bonding ability by replacing the hot melt adhesive, and has a strong applicability.

[0004] The technical solution adopted by the present invention is: the top ear forming device includes a top ear forming machine frame arranged above the paper box conveying mechanism, and is characterized in that: a vertically arranged forming mechanism connecting back plate is arranged on the top ear forming machine frame, a ring-shaped forming mechanism circulating guide rail is arranged on the forming mechanism connecting back plate, and a plurality of groups of top ear forming mechanisms for packaging paper box top ear forming are movably arranged on the forming mechanism circulating guide rail, and the top ear forming mechanism is connected to the output end of the top ear forming servo motor through a forming transmission mechanism; a capping and smoothing mechanism and a smoothing and anti-deformation support frame are respectively arranged on both sides of the box entry end of the top ear forming machine frame, and a sealing glue gun is also arranged at the box entry end of the top ear forming machine frame, and a paper box forming outlet for connecting to the box exit conveying mechanism is arranged at the box exit end of the top ear forming machine frame.

[0005] The molding transmission mechanism includes two groups of molding annular transmission chains arranged in parallel, one end of the molding annular transmission chain is provided with a molding driving sprocket, the middle of the molding driving sprocket is provided with a molding driving wheel shaft, the molding driving wheel shaft is connected to the output end of the top ear molding servo motor, and the other end of the molding annular transmission chain is provided with a molding driven sprocket, the middle of the molding driven sprocket is provided with a molding driven wheel shaft; the molding driven wheel shaft and the molding driving wheel shaft are respectively connected to the top ear molding frame through a rotating bearing, and a circular chain guide track for guiding the molding annular transmission chain is also provided between the molding driving wheel shaft and the molding driven wheel shaft. The molding driving sprocket connected to the molding driving wheel shaft is driven by the top ear molding servo motor to rotate, so as to drive the two groups of molding annular transmission chains arranged in parallel to rotate synchronously, and then drive each group of top ear molding mechanisms to move along the circular molding mechanism circulation rails provided on the molding mechanism connecting back plate, so as to use the top ear molding mechanism to continuously press and mold the top ears on both sides of the packaging carton after glue application.

[0006] The top ear forming mechanism includes a transmission chain connector for connecting to the forming transmission mechanism, the transmission chain connector is connected to the chain link of the forming annular transmission chain of the forming transmission mechanism through a chain link connecting part, a guide wheel connecting frame is arranged on one side of the transmission chain connector, and the guide wheel connecting frame is connected to the annular forming mechanism circulating guide rail arranged on the forming mechanism connecting back plate through two sets of forming mechanism circulating guide wheels arranged up and down; a lifting frame mounting base is arranged on the other side of the transmission chain connector, a forming lifting frame is movably arranged below the lifting frame mounting base, and the forming lifting frame is sleeved on the vertically arranged lifting frame guide rod, and the forming lifting frame is , a lifting frame driving part is arranged on the side connected to the back plate toward the forming mechanism; the upper end of the lifting frame guide rod is inserted into the lifting frame guide sleeve on the lifting frame mounting base, the lower end of the lifting frame guide rod is fixedly provided with a carton top contact positioning block, the carton top contact positioning block is provided with a box cover positioning arc opening, the left and right sides of the carton top contact positioning block are respectively hinged with symmetrically arranged top ear forming pressure claws, and the top ear forming pressure claws are also hinged with the left and right sides of the forming lifting frame through the pressure claw driving connecting rod, and a lifting frame reset spring is arranged between the lower side of the forming lifting frame and the upper side of the carton top contact positioning block. The transmission chain connector and the lifting frame mounting base are connected to two chain links at corresponding positions on two groups of parallelly arranged forming annular transmission chains through a chain link connecting part, so that the top ear forming mechanism can be circulated along the forming annular transmission chain, and the cooperation of the forming mechanism circulating guide wheel on the guide wheel connecting frame and the forming mechanism circulating guide rail on the forming mechanism connecting back plate is used to guide the movement of the top ear forming mechanism; and the reciprocating lifting of the forming lifting frame along the lifting frame guide rod is used to drive the top contact positioning block of the carton to move up and down, and at the same time, the pressing claw driving connecting rod hingedly arranged on the left and right sides of the forming lifting frame is used to drive the top ear forming pressing claws hinged on the left and right sides of the carton top contact positioning block to close or open; in addition, the lifting frame reset spring arranged between the forming lifting frame and the carton top contact positioning block can ensure that in the process of the forming lifting frame descending, the carton top contact positioning block first contacts with the plane at the top of the packaging carton, and then drives the top ear forming pressing claws on both sides to move after the contact, so as to ensure the process sequence of the top ear forming and the product quality.

[0007] The middle part of the forming mechanism connected back plate is provided with a forming mechanism arrangement cavity, and the periphery of the forming mechanism arrangement cavity is provided with a ring-shaped lifting frame driving groove; the lifting frame driving part includes a lifting frame driving rod provided on the forming lifting frame, and the end of the lifting frame driving rod is provided with a groove matching roller for matching and connecting with the lifting frame driving groove. The groove matching roller is used to follow the shape of the lifting frame driving groove of the forming mechanism connected back plate to change the vertical position height of the forming lifting frame, thereby driving the top contact positioning block of the paper box below and the top ear forming pressing claws on both sides thereof to move.

[0008] The lifting frame driving groove is a closed annular structure, and the lifting frame driving groove includes a forming pressure claw opening straight section groove located at the top, a forming pressure claw closing straight section groove is arranged below the forming pressure claw opening straight section groove, and the two ends of the forming pressure claw closing straight section groove are respectively provided with an upward and inclined forming pressure claw closing inclined groove and a forming pressure claw opening inclined groove, and the upper ends of the forming pressure claw opening inclined groove and the forming pressure claw closing inclined groove are respectively connected to the two ends of the forming pressure claw opening straight section groove through a forming pressure claw opening transition arc groove. The top ear forming claw of the top ear forming mechanism is maintained in the open state by driving the forming claw above the groove to open the straight groove through the lifting frame, and the top ear forming claw is driven to close and press the top ear of the packaging paper box by using the forming claw closing inclined groove connected to the forming claw opening transition arc groove, and the top ear forming claw is maintained in the closed clamping state by driving the forming claw below the groove to close the straight groove through the lifting frame, thereby achieving continuous pressing on the top ear; then, the top ear forming claw is opened by using the forming claw opening inclined groove and the forming claw opening transition arc groove arranged at the other end, and the top ear forming mechanism enters the upper forming claw opening straight groove again to carry out the next cycle.

[0009] The upper end of the guide rod of the lifting frame is provided with a guide rod limit stopper for limiting the action position of the top contact positioning block of the paper box. The guide rod limit stopper is used to mechanically limit the descending and ascending positions of the top contact positioning block of the paper box, thereby facilitating the positioning contact of the top ear forming mechanism on the top of the packaging paper box during the top ear forming process, and facilitating the separation of the top ear forming mechanism from the packaging paper box after the forming is completed.

[0010] The capping and smoothing mechanism includes a smoothing cylinder bracket, on which a smoothing cylinder is arranged in a horizontal direction perpendicular to the paper box conveying direction, and a smoothing push claw is fixedly arranged at the telescopic end of the smoothing cylinder, and a box cover avoidance opening is also arranged in the middle of the smoothing push claw. The extension and contraction of the smoothing cylinder drives the extension and retraction of the smoothing push claw, and then the smoothing push claw is used to push and smooth the top of the packaging paper box after the capping welding, so as to prepare for the subsequent gluing and molding of the top ear.

[0011] The smoothing and anti-deformation support frame includes an anti-deformation bending support plate, which is arranged on the other side corresponding to the position of the capping and smoothing mechanism, and the lower end of the anti-deformation bending support plate is fixedly connected to the frame of the paper box conveying mechanism, and the upper end of the anti-deformation bending support plate is in contact with the side wall of the packaging paper box. In the process of the capping and smoothing mechanism pushing and smoothing the top of the packaging paper box, the anti-deformation bending support plate arranged on the other side is used to support the side wall of the box body of the packaging paper box, thereby effectively preventing the deformation of the packaging paper box.

[0012] The beneficial effects of the present invention are as follows: since the present invention adopts a top ear forming machine frame arranged above the paper box conveying mechanism, a forming mechanism connecting back plate is arranged on the top ear forming machine frame, a ring-shaped forming mechanism circulating guide rail is arranged on the forming mechanism connecting back plate, a plurality of groups of top ear forming mechanisms are movably arranged on the forming mechanism circulating guide rail, and the top ear forming mechanism is connected to the output end of the top ear forming servo motor through a forming transmission mechanism; a top sealing and smoothing mechanism and a smoothing anti-deformation support frame are respectively arranged on both sides of the box inlet end of the top ear forming machine frame, a sealing glue gun is also arranged at the box inlet end of the top ear forming machine frame, and a paper box forming outlet is arranged at the box outlet end of the top ear forming machine frame, so the present invention has a reasonable design and a compact structure, and uses hot melt adhesive to bond the top ear part, which can avoid affecting the stability of the box body material of the packaging paper box, has reasonable space utilization, low equipment energy consumption, good box sealing and molding effect, high processing efficiency, and the bonding ability can be improved by replacing the hot melt adhesive, and has strong applicability. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] Figure 1 It is a structural schematic diagram of the present invention.

[0014] Figure 2 yes Figure 1 A-direction view.

[0015] Figure 3 yes Figure 2 A schematic diagram of a partial structure of the capping and smoothing mechanism and the smoothing and anti-deformation support frame.

[0016] Figure 4 yes Figure 2 A schematic diagram of a connection structure in which a top ear forming mechanism and a forming mechanism are connected to a back plate.

[0017] Figure 5 yes Figure 4 B view.

[0018] Figure 6 yes Figure 4 A structural schematic diagram of the forming mechanism connecting the back plate.

[0019] Figure 7 yes Figure 4 A structural schematic diagram of the top ear forming mechanism in FIG.

[0020] Figure 8 yes Figure 7 C-direction view.

[0021] Fig. 9 yes Figure 7 Front view of .

[0022] Fig.10 yes Figure 7A schematic diagram of a usage state in which the forming lifting frame moves downward, drives the top of the paper box to contact the positioning block, and the top ear forming pressing claws on both sides act.

[0023] Fig.11 yes Fig.10 Front view of .

[0024] Explanation of the numbers in the figure: 1 carton conveying mechanism, 2 top ear forming frame, 3 capping and smoothing mechanism, 4 smoothing anti-deformation support frame, 5 sealing glue gun, 6 forming mechanism connecting back plate, 7 forming mechanism circulating guide rail, 8 top ear forming mechanism, 9 top ear forming servo motor, 10 carton forming outlet, 11 packaging carton, 12 smoothing cylinder bracket, 13 smoothing cylinder, 14 smoothing push claw, 15 box cover avoidance, 16 anti-deformation bending support plate, 17 forming annular transmission chain, 18 forming driving sprocket, 19 forming driving wheel shaft, 20 forming driven sprocket, 21 forming driven wheel shaft, 22 annular chain guide rail, 23 forming mechanism layout cavity, 24 forming pressure claw opens straight section groove, 25 forming pressure claw opens transition arc groove, 26 forming pressure claw closes oblique groove, 27 forming pressure claw closes straight section groove, 28 forming pressure claw opens oblique groove, 29 transmission chain connector, 30 chain link connector, 31 guide wheel connector, 32 forming mechanism circulation guide wheel, 33 lifting frame mounting base, 34 lifting frame guide sleeve, 35 forming lifting frame, 36 lifting frame guide rod, 37 paper box top contact positioning block, 38 top ear forming pressure claw, 39 pressure claw drive connecting rod, 40 lifting frame reset spring, 41 lifting frame drive rod, 42 groove matching roller, 43 box cover positioning arc mouth, 44 guide rod limit block. DETAILED DESCRIPTION

[0025] according to Figures 1 to 11The specific structure of the present invention is described in detail. The top ear forming device includes a top ear forming frame 2 arranged above the carton conveying mechanism 1, and the top ear forming frame 2 is provided with a capping and smoothing mechanism 3 and a smoothing and anti-deformation support frame 4 on the front and rear sides close to the box entry end of the previous process. The capping and smoothing mechanism 3 includes a smoothing cylinder bracket 12, and the smoothing cylinder bracket 12 is provided with a smoothing cylinder 13 arranged in a horizontal direction perpendicular to the carton conveying direction, and the telescopic end of the smoothing cylinder 13 is fixedly provided with a smoothing push claw 14, and the middle part of the smoothing push claw 14 is also provided with a box cover avoidance opening 15; then the extension and retraction of the smoothing cylinder 13 is used to drive the extension and retraction of the smoothing push claw 14, so as to use the smoothing push claw 14 to push and smooth the top of the packaging carton 11 after the capping welding, so as to prepare for the subsequent gluing and forming of the top ear. In addition, the smoothing and anti-deformation support frame 4 is composed of an anti-deformation bending support plate 16, which is arranged on the other side corresponding to the position of the capping and smoothing mechanism 3, and the lower end of the anti-deformation bending support plate 16 is fixedly connected to the frame of the carton conveying mechanism 1, and the upper end of the anti-deformation bending support plate 16 is in contact with the side wall of the packaging carton 11; thus, in the process of the capping and smoothing mechanism 3 pushing and smoothing the top of the packaging carton 11, the anti-deformation bending support plate 16 arranged on the other side is used to support the side wall of the packaging carton 11, effectively preventing the deformation of the packaging carton 11. At the same time, the box-entering end of the top ear forming frame 2 is also provided with a sealing glue gun 5 for spraying hot melt glue on both sides of the top of the packaging carton 11.

[0026] A vertically arranged forming mechanism connecting back plate 6 is provided on the top ear forming machine frame 2, and a circular forming mechanism circulating guide rail 7 is provided on the forming mechanism connecting back plate 6, which is away from the carton conveying mechanism 1. A plurality of groups of top ear forming mechanisms 8 for forming the top ear portion of the packaging carton 11 are movably provided on the forming mechanism circulating guide rail 7. The top ear forming mechanism 8 is connected to the output end of the top ear forming servo motor 9 through a forming transmission mechanism composed of two groups of parallelly arranged forming annular transmission chains 17. A forming driving sprocket 18 is provided at one end of the forming annular transmission chain 17, and a forming driving wheel shaft 19 is provided in the middle of the forming driving sprocket 18, and the forming driving wheel shaft 19 is connected to the output end of the top ear forming servo motor 9; a forming driven sprocket 20 is provided at the other end of the forming annular transmission chain 17, and a forming driven wheel shaft 21 is provided in the middle of the forming driven sprocket 20. The driven forming wheel shaft 21 and the active forming wheel shaft 19 are respectively connected to the top ear forming machine frame 2 through a rotating bearing, and an annular chain guide track 22 for guiding the forming annular transmission chain 17 is also provided between the active forming wheel shaft 19 and the driven forming wheel shaft 21. Furthermore, the forming active sprocket 18 connected to the forming active wheel shaft 19 is driven to rotate by the top ear forming servo motor 9 to drive the two groups of parallelly arranged forming annular transmission chains 17 to rotate synchronously, thereby driving each group of top ear forming mechanisms 8 to move cyclically along the annular forming mechanism circulation guide rail 7 provided on the forming mechanism connecting back plate 6, so as to use the top ear forming mechanism 8 to continuously press and form the top ears on both sides of the packaging paper box 11 after the hot melt glue is applied, that is, the solidified hot melt glue is used for shaping, and the bonding ability can be improved by changing the type of hot melt glue.

[0027] The top ear forming mechanism 8 includes a transmission chain connector 29, which is connected to the chain links of the two groups of forming annular transmission chains 17 of the forming transmission mechanism through a chain link connecting part 30. A guide wheel connecting frame 31 is provided on the transmission chain connector 29 on the side away from the carton conveying mechanism 1. The guide wheel connecting frame 31 is connected to the annular forming mechanism circulating guide rail 7 provided on the forming mechanism connecting back plate 6 through two groups of forming mechanism circulating guide wheels 32 arranged above and below. A lifting frame mounting base 33 is provided on the transmission chain connector 29 on the other side close to the carton conveying mechanism 1, and a forming lifting frame 35 is movably provided below the lifting frame mounting base 33, and the forming lifting frame 35 is sleeved on two vertically arranged lifting frame guide rods 36, and a lifting frame driving part is provided on the forming lifting frame 35 on the side facing the forming mechanism connecting back plate 6.

[0028] Moreover, the upper end of the lifting frame guide rod 36 is inserted into the lifting frame guide sleeve 34 on the lifting frame mounting base 33, and the lower end of the lifting frame guide rod 36 is fixedly provided with a carton top contact positioning block 37, and the carton top contact positioning block 37 is provided with a box cover positioning arc-shaped opening 43; the left and right sides of the carton top contact positioning block 37 are respectively hinged with symmetrically arranged top ear forming pressure claws 38, and the top ear forming pressure claws 38 are also hinged with the left and right sides of the forming lifting frame 35 through the pressure claw driving connecting rod 39; a lifting frame reset spring 40 is also provided between the lower side of the forming lifting frame 35 and the upper side of the carton top contact positioning block 37. Thus, the transmission chain connector 29 and the lifting frame mounting base 33 are connected to the two chain links at the corresponding positions on the two groups of parallelly arranged forming annular transmission chains 17 through the chain link connecting part 30, so that the top ear forming mechanism 8 can be circulated along the forming annular transmission chain 17, and the cooperation of the forming mechanism circulation guide wheel 32 on the guide wheel connecting frame 31 and the forming mechanism circulation guide rail 7 on the forming mechanism connecting back plate 6 is used to guide the movement of the top ear forming mechanism 8. In addition, the top contact positioning block 37 of the paper box is driven to move up and down by the reciprocating lifting of the forming lifting frame 35 along the lifting frame guide rod 36; at the same time, the top ear forming pressing claws 38 hinged on the left and right sides of the paper box top contact positioning block 37 are driven to close or open by the pressing claw driving connecting rod 39 on the left and right sides of the forming lifting frame 35. It can be understood that the lifting frame reset spring 40 arranged between the forming lifting frame 35 and the top contact positioning block 37 of the paper box can ensure that during the downward movement of the forming lifting frame 35, the lower top contact positioning block 37 of the paper box first contacts with the plane at the top of the packaging paper box 11, and then drives the top ear forming claws 38 on both sides to move, thereby ensuring the process sequence of the top ear forming and ensuring product quality.

[0029] A forming mechanism arrangement cavity 23 is provided in the middle of the vertically arranged forming mechanism connecting back plate 6, and a ring-arranged lifting frame driving groove is provided around the forming mechanism arrangement cavity 23 on the forming mechanism connecting back plate 6 and close to the carton conveying mechanism 1. The lifting frame driving groove adopts a closed ring structure, and the lifting frame driving groove includes a forming claw opening straight section groove 24 located above the arrangement cavity, and a forming claw closing straight section groove 27 is provided below the forming claw opening straight section groove 24 (below the arrangement cavity), and the two ends of the forming claw closing straight section groove 27 are respectively provided with an upwardly inclined and symmetrically arranged forming claw closing inclined groove 26 and a forming claw opening inclined groove 28; the upper ends of the forming claw opening inclined groove 28 and the forming claw closing inclined groove 26 are respectively connected to the two ends of the forming claw opening straight section groove 24 through two sections of forming claw opening transition arc grooves 25. Thus, the top ear forming claw 38 of the top ear forming mechanism 8 is kept in the open state by driving the forming claw above the groove to open the straight slot 24, and the top ear forming claw 38 is driven to close and press the top ear of the packaging paper box 11 by using the forming claw closing inclined slot 26 connected to the forming claw opening transition arc slot 25; and the top ear forming claw 38 is maintained in the closed clamping state by driving the forming claw closing straight slot 27 below the groove by the lifting frame, so as to achieve the pressing of the top ear for a period of time. Then, the top ear forming claw 38 is opened by using the forming claw opening inclined slot 28 and the forming claw opening transition arc slot 25 arranged at the other end, and then the top ear forming mechanism 8 enters the forming claw opening straight slot 24 above the cavity again to carry out the next cycle.

[0030] The lifting frame driving part on the forming lifting frame 35 is composed of a lifting frame driving rod 41, and the end of the lifting frame driving rod 41 is provided with a groove matching roller 42 for matching and connecting with the lifting frame driving groove, so as to change the vertical position height of the forming lifting frame 35 by using the groove matching roller 42 to follow the shape in each section of the lifting frame driving groove of the forming mechanism connecting the back plate 6, thereby driving the top contact positioning block 37 of the paper box below and the top ear forming pressing claws 38 on both sides thereof to move. In addition, the upper ends of the two lifting frame guide rods 36 are respectively provided with guide rod limit blocks 44 for limiting the action position of the top contact positioning block 37 of the paper box, so as to use the guide rod limit blocks 44 to mechanically limit the descending and ascending positions of the top contact positioning block 37 of the paper box, so as to facilitate the positioning contact of the top ear forming mechanism 8 on the top of the packaging paper box 11 during the top ear forming process, and the separation of the top ear forming mechanism 8 from the packaging paper box 11 after the forming is completed. The box discharging end of the top ear forming frame 2 is also provided with a paper box forming outlet 10 for connecting to a box discharging conveying mechanism.

[0031] When the top ear forming device is used, first, the packaging paper box 11 that has been folded and welded at the top by the capping folding and welding device in the previous process enters the box entry end of the top ear forming frame 2 along with the paper box conveying mechanism 1; then, the paper box conveying mechanism 1 pauses, extends the smoothing cylinder 13, drives the smoothing push claw 14 to extend, and then uses the smoothing push claw 14 to push and smooth the top of the packaging paper box 11 that has been capped and welded; and, in the process of the capping smoothing mechanism 3 pushing and smoothing the top of the packaging paper box 11, the smoothing anti-deformation support frame 4 arranged on the other side is used to support the side wall of the box body of the packaging paper box 11 to prevent the deformation of the packaging paper box 11. The packaging paper box 11 that has been pushed and smoothed is moved forward by a box distance again along with the paper box conveying mechanism 1, and the sealing glue gun 5 arranged on the side of the box entry end of the top ear forming frame 2 is used to spray hot melt glue on both sides of the top of the packaging paper box 11 whose top has been pushed and smoothed.

[0032] Afterwards, two groups of forming annular transmission chains 17 driven by the top ear forming servo motor 9 are used to drive each group of top ear forming mechanisms 8 to move cyclically along the annular forming mechanism circulating guide rails 7 set on the forming mechanism connecting back plate 6. At the same time, the groove at the end of the lifting frame driving rod 41 on the forming lifting frame 35 cooperates with the roller 42 to move in each section of the lifting frame driving groove to change the vertical position height of the forming lifting frame 35 and the state of the top ear forming pressing claw 38, that is, the top ear forming pressing claw 38 is kept open by opening the straight section groove 24 of the forming pressing claw, and the top ear forming pressing claw 38 is driven to close and press the top ear of the packaging paper box 11 by the forming pressing claw closing inclined groove 26 connected to the forming pressing claw opening transition arc groove 25, and the top ear forming pressing claw 38 is maintained in a closed clamping state by closing the straight section groove 27 of the forming pressing claw, so as to realize that the top ear forming pressing claw 38 presses the top ear for a period of time. As the carton conveying mechanism 1 intermittently moves forward by one box distance, after the top ear forming pressing claw 38 presses the top ear of the packaging carton 11 to a specified distance (duration), the top ear forming pressing claw 38 is opened by using the forming pressing claw opening inclined groove 28 and the forming pressing claw opening transition arc groove 25. Subsequently, the groove at the end of the lifting frame driving rod 41 of the top ear forming mechanism 8 cooperates with the roller 42 to circulate again into the upper forming pressing claw opening straight section groove 24 to prepare for the next cycle.

Claims

1. A top ear forming device, comprising a top ear forming frame (2) arranged above a carton conveying mechanism (1), characterized in that: The top ear forming machine frame (2) is provided with a vertically arranged forming mechanism connecting back plate (6), the forming mechanism connecting back plate (6) is provided with an annular forming mechanism circulating guide rail (7), a plurality of top ear forming mechanisms (8) for forming the top ear portion are movably provided on the forming mechanism circulating guide rail (7), and the top ear forming mechanisms (8) are connected to the output end of the top ear forming servo motor (9) through a forming transmission mechanism; the top ear forming mechanisms (8) are respectively provided with a capping and smoothing mechanism (3) and a smoothing and anti-deformation support frame (4) on both sides of the box inlet end of the top ear forming machine frame (2), and a sealing glue gun (5) is also provided at the box inlet end of the top ear forming machine frame (2); and the box outlet end of the top ear forming machine frame (2) is provided with a paper box forming outlet (10) for connecting to a box outlet conveying mechanism.

2. The top ear forming device according to claim 1, characterized in that: The molding transmission mechanism comprises two groups of molding annular transmission chains (17) arranged in parallel, one end of the molding annular transmission chain (17) is provided with a molding driving sprocket (18), the middle of the molding driving sprocket (18) is provided with a molding driving wheel shaft (19), the molding driving wheel shaft (19) is connected to the output end of the top ear molding servo motor (9), and the other end of the molding annular transmission chain (17) is provided with a molding driven sprocket (20), the middle of the molding driven sprocket (20) is provided with a molding driven wheel shaft (21); the molding driven wheel shaft (21) and the molding driving wheel shaft (19) are respectively connected to the top ear molding frame (2) through rotating bearings, and an annular chain guide track (22) for guiding the molding annular transmission chain (17) is also provided between the molding driving wheel shaft (19) and the molding driven wheel shaft (21).

3. The top ear forming device according to claim 1, characterized in that: The top ear forming mechanism (8) comprises a transmission chain connector (29) for connecting to a forming transmission mechanism, the transmission chain connector (29) being connected to a chain link of a forming annular transmission chain (17) of the forming transmission mechanism via a chain link connecting portion (30), a guide wheel connecting frame (31) being arranged on one side of the transmission chain connector (29), the guide wheel connecting frame (31) being cooperatively connected to an annular forming mechanism circulating guide rail (7) arranged on a forming mechanism connecting back plate (6) via two groups of forming mechanism circulating guide wheels (32) arranged up and down; a lifting frame mounting base (33) being arranged on the other side of the transmission chain connector (29), a forming lifting frame (35) being movably arranged below the lifting frame mounting base (33), and the forming lifting frame (35) being sleeved on a vertically arranged lifting frame guide rod (36), and the forming lifting frame (3 5) and a lifting frame driving unit is arranged on the side of the back plate (6) connected to the molding mechanism; the upper end of the lifting frame guide rod (36) is inserted into the lifting frame guide sleeve (34) on the lifting frame mounting base (33); the lower end of the lifting frame guide rod (36) is fixedly provided with a carton top contact positioning block (37); the carton top contact positioning block (37) is provided with a box cover positioning arc-shaped opening (43); the left and right sides of the carton top contact positioning block (37) are respectively hingedly provided with symmetrically arranged top ear molding pressure claws (38); and the top ear molding pressure claws (38) are also respectively hingedly connected to the left and right sides of the molding lifting frame (35) through pressure claw driving connecting rods (39); and a lifting frame return spring (40) is arranged between the lower side of the molding lifting frame (35) and the upper side of the carton top contact positioning block (37).

4. The top ear forming device according to claim 3, characterized in that: A molding mechanism arrangement cavity (23) is provided in the middle of the molding mechanism connection back plate (6), and a lifting frame driving groove arranged in an annular manner is provided around the molding mechanism arrangement cavity (23); the lifting frame driving unit comprises a lifting frame driving rod (41) provided on the molding lifting frame (35), and a groove matching roller (42) for matching and connecting with the lifting frame driving groove is provided at the end of the lifting frame driving rod (41).

5. The top ear forming device according to claim 4, characterized in that: The lifting frame driving groove is a closed annular structure, and the lifting frame driving groove includes a forming pressure claw opening straight section groove (24) located at the top, a forming pressure claw closing straight section groove (27) is arranged below the forming pressure claw opening straight section groove (24), and the two ends of the forming pressure claw closing straight section groove (27) are respectively provided with a forming pressure claw closing inclined groove (26) and a forming pressure claw opening inclined groove (28) arranged upward and obliquely, and the upper ends of the forming pressure claw opening inclined groove (28) and the forming pressure claw closing inclined groove (26) are respectively connected to the two ends of the forming pressure claw opening straight section groove (24) through the forming pressure claw opening transition arc groove (25).

6. The top ear forming device according to claim 3, characterized in that: The upper end of the lifting frame guide rod (36) is provided with a guide rod limit stopper (44) for limiting the action position of the top of the paper box contacting the positioning block (37).

7. The top ear forming device according to claim 1, characterized in that: The capping and smoothing mechanism (3) comprises a smoothing cylinder bracket (12), on which a smoothing cylinder (13) is arranged in a horizontal direction perpendicular to the paper box conveying direction, a smoothing push claw (14) is fixedly arranged at the telescopic end of the smoothing cylinder (13), and a box cover avoidance opening (15) is also arranged in the middle of the smoothing push claw (14).

8. The top ear forming device according to claim 1, characterized in that: The smoothing and anti-deformation support frame (4) comprises an anti-deformation bending support plate (16), which is arranged on the other side corresponding to the position of the capping and smoothing mechanism (3), and the lower end of the anti-deformation bending support plate (16) is fixedly connected to the frame of the carton conveying mechanism (1), and the upper end of the anti-deformation bending support plate (16) is in contact with the side wall of the packaging carton (11).

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