Full-automatic hollow slab hot air box forming machine

Abstract

The invention provides a full-automatic hollow slab hot air box forming machine which comprises a workbench arranged on a rack and provided with three stations from left to right, namely a discharging station, a waiting station and a welding station; the plate pushing trolley is arranged on the rack in a sliding manner through a rail, is provided with two pairs of non-return blocks higher than the table top of the working table, and is used for pushing the boxboards to the next station; the limiting plate is erected on the right side of the discharging position, and a gap is reserved in the bottom of the limiting plate for the boxboard to pass; the suction cup air cylinder is arranged above the waiting position, and a suction cup is arranged at the driving end of the suction cup air cylinder and used for sucking one side edge of the box plate; the hot melting welding device comprises a cross beam, a supporting arm, a hot air gun and a pressing wheel set, the cross beam is erected on the welding position, the upper end of the supporting arm is connected with the cross beam, the lower end of the supporting arm is used for supporting one side edge of the boxboard, the hot air gun is connected with the cross beam through a moving device to conduct hot melting on the two side edges of the boxboard, and the pressing wheel set conducts pressing fit on the hot melting area of the boxboard. Full-automatic hot melting box forming of hollow plate box plates is achieved, and the production efficiency and quality are improved.

Description

Technical Field

[0001] The invention relates to the technical field of hollow slab forming, in particular to a full-automatic hollow slab hot air box forming machine. Background Art

[0002] The board boxes made of hollow plastic boards have the advantages of light weight, moisture resistance, corrosion resistance, shock resistance, and flexible structural design, and are often used in logistics, warehousing, transportation and other fields. The production process steps are generally: raw material preparation - drawing the box expansion diagram - embossing and die cutting - installing accessories - box assembly - quality inspection and packaging.

[0003] When assembling the box, there are various ways to assemble the joints. Some common assembly methods include snap-on assembly, screw-fixed assembly, hot-melt welding assembly, and bonding assembly. Some special combination methods include riveting and plug-in, etc., which are selected according to the specific needs and design requirements of the hollow board box. Among them, the snap-on or screw-fixed assembly will have metal parts, which is not conducive to the recycling of the box board, while the strength and sealing of the bonding assembly are not as good as the hot-melt welding assembly. Hot-melt welding assembly of the box joint is an assembly method that can ensure the performance of the box board and is easy to recycle.

[0004] The existing hot melt welding assembly is mainly completed by spot welding with a welding machine, and the loading action is completed by the operator: the enclosed part is unfolded at a certain angle and placed in the welding position, the machine is started to complete the welding, the material is taken out and repeated. Although this method has a high welding strength, it relies on skilled operating skills and has high requirements for operators. The efficiency in mass production is low, and defects such as weld nodules and spatters may occur during the spot welding process, affecting the appearance quality of the product.

[0005] Therefore, it is necessary to improve the existing technology. Summary of the invention

[0006] The present invention provides a fully automatic hollow slab hot air box-forming machine to solve the above problems.

[0007] A technical solution adopted by the present invention is to provide a fully automatic hollow plate hot air box forming machine, comprising:

[0008] The workbench is set on the frame and has three working positions from left to right, namely, the material placing position, the waiting position and the welding position;

[0009] The pusher is set on the frame through the track sliding, and has two pairs of check blocks higher than the workbench surface, which are used to push the box plates at the discharge position and the waiting position to the next work position respectively;

[0010] The limit plate is installed on the right side of the discharge position, with a gap at the bottom for the box plate at the bottom of the discharge position to pass through;

[0011] The suction cup cylinder is arranged above the waiting position, and a suction cup is arranged at its driving end for sucking up one side of the box board to form a hot-melt space between the two sides of the box board;

[0012] The hot-melt welding device includes a crossbeam, a supporting arm, a hot air gun and a pressure wheel assembly. The crossbeam is set at the welding position. The upper end of the supporting arm is connected to the crossbeam, and the lower end is used to hold up one side of the box plate. The hot air gun is connected to the crossbeam through a moving device, and its heating end enters or exits the hot-melt space by moving up and down and forward and backward.

[0013] The pressing wheel group includes an upper pressing wheel and a lower pressing wheel. The upper pressing wheel is connected to the crossbeam through an elastic device. The lower pressing wheel is a driving wheel and is arranged on the frame, corresponding to the upper pressing wheel. The pressing wheel group drives the box plate to move to the right and press the hot-melt area.

[0014] Furthermore, the check block includes a fixed block and a movable button. The fixed block has a slot. The movable button is arranged in the slot. One end is rotatably connected to the fixed block, and the other end is lifted by the spring in the slot and is higher than the workbench surface. When the push plate trolley moves to the right, the movable button pushes the box plate to the next workstation. When the push plate trolley returns, the protruding part of the movable button is pressed down to avoid pushing the box plate back.

[0015] Furthermore, a pair of baffles are provided on the limiting plate, and the baffles and the limiting plate form a U-shaped space for placing the stacked box plates and ensuring that the box plates are neat, so that the feeding is more stable.

[0016] Furthermore, a material shortage sensor is also provided on the baffle plate to prompt the operator to add box plates.

[0017] Furthermore, it also includes a pair of symmetrically arranged guide plates, which extend from the waiting position to the welding position and are used for guiding the pushed box plates.

[0018] Furthermore, a pair of flip cylinders are provided on the right side of the push plate trolley, and a driving end thereof has a flippable flap. After the box plate reaches the waiting position, the flap rotates upward to align the upper and lower layers of the box plate.

[0019] Furthermore, the suction cup cylinder is connected to the frame through a bracket, and the bracket is also provided with a guide wheel and a support plate, which are respectively located on the left and right sides of the suction cup cylinder. The former is used to adjust the height of one side edge of the box plate so that it can accurately reach the adsorption area of ​​the suction cup cylinder, and the latter is used to lift one side edge of the box plate so that this side edge can smoothly enter the corresponding position of the support arm.

[0020] Furthermore, a supporting block is provided at the lower end of the support arm, and the supporting block has a C-shaped opening and is also used to support one side of the box plate.

[0021] Furthermore, a heat insulation plate extending to the right is provided on the other side of the support block, which is used to isolate the heating end of the hot air gun from the box plate next to the welding area during the movement of the hot air gun.

[0022] The beneficial effects of the fully automatic hollow plate hot air box-forming machine of the present invention are:

[0023] 1. Stack the box panels on the workbench, push the box panels forward with a pusher, suck up one side of the box panel at the waiting position, hot-melt the two sides of the box panel at the welding position and press them together with a pressing wheel, thus realizing the fully automatic hot-melt forming of hollow board box panels and improving production efficiency and quality. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] Figure 1 It is a front view of a fully automatic hollow panel hot air box-forming machine according to the first embodiment of the present invention;

[0025] Figure 2 It is a top view of a fully automatic hollow panel hot air box-forming machine according to the first embodiment of the present invention;

[0026] Figure 3 It is a side view of a fully automatic hollow panel hot air box-forming machine according to the first embodiment of the present invention;

[0027] Figure 4 is a side view of a hot melt welding device in a first embodiment of the present invention;

[0028] The components in the accompanying drawings are marked as follows: 1. workbench, 2. push plate trolley, 3. limit plate, 4. bracket, 5. hot melt welding device, 6. box plate, 11. no material sensor, 21. check block, 22. flip cylinder, 23. trolley motor, 31. baffle, 32. lack of material sensor, 41. guide wheel, 42. suction cup cylinder, 43. support plate, 51. crossbeam, 52. support arm, 53. hot air gun, 54. upper pressure wheel, 55. lower pressure wheel, 56. pressure wheel motor, 511, connecting plate, 531, moving device. DETAILED DESCRIPTION

[0029] The preferred embodiments of the present invention are described in detail below in conjunction with the accompanying drawings so that the advantages and features of the present invention can be more easily understood by those skilled in the art, thereby making a clearer and more definite definition of the protection scope of the present invention.

[0030] In the description of the present invention, it should be understood that the terms "up", "down", "left", "right", "front", "back", "horizontal", "vertical", "inside", "outside", etc., indicating directions or positional relationships, are based on the directions or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention. They cannot indicate or imply that the components or elements referred to must have a specific direction, be constructed and operated in a specific direction, and therefore cannot be understood as limiting the present invention.

[0031] See also Figures 1 to 4 The first embodiment of the present invention provides a fully automatic hollow panel hot air box forming machine, comprising:

[0032] Workbench 1 is arranged on the frame and has three working positions from left to right, namely, a material placing position, a waiting position and a welding position;

[0033] The push plate trolley 2 is slidably arranged on the frame through a track and is located below the workbench 1;

[0034] Two pairs of check blocks 21 and a pair of flip cylinders 22 are arranged on the push plate trolley 2 from left to right. Two notches are opened on the workbench 1 along the sliding direction of the push plate trolley 2 to make way for the check blocks 21 and the flip cylinders 22. When the push plate trolley 2 moves to the right, the two pairs of check blocks 21 above the workbench 1 push the box board 6 at the discharge position and the waiting position to the next position respectively. When the box board reaches the waiting position, the flip plate at the driving end of the flip cylinder 22 rotates upward to align the upper and lower layers of the box board.

[0035] A limit plate 3 is arranged on the right side of the discharge position, and the front and rear ends of the limit plate 3 are connected to the frame through columns. A gap is left at the bottom of the limit plate 3 for the box plate 6 at the bottom of the discharge position to pass through. A pair of baffles 31 are also arranged on the limit plate 3. The baffles 31 are perpendicular to the limit plate 3 and form a U-shaped space for placing the stacked box plates and ensuring that the box plates are neat, so that the feeding is more stable.

[0036] A suction cup cylinder 42 is arranged above the waiting position, and a suction cup is arranged at the driving end of the suction cup cylinder 42 for sucking up one side of the box board to form a hot-melt space between the two sides of the box board;

[0037] The hot melt welding device 5 includes a crossbeam 51, a supporting arm 52, a hot air gun 53, an upper pressing wheel 54 and a lower pressing wheel 55. The crossbeam 51 is erected at the welding position, and a connecting plate 511 is arranged below the crossbeam 51. The upper end of the supporting arm 52 is fixed to the left side of the connecting plate 511, and a supporting block is arranged at the lower end. The supporting block has a C-shaped opening opening forward for supporting one side of the box plate being sucked up. The hot air gun 53 is connected to the left crossbeam 51 through a moving device 531, and its heated end enters or exits the hot melt space by moving up and down and forward and backward. The upper pressing wheel 54 is fixed to the right side of the connecting plate 511 through an elastic device, and the lower pressing wheel 55 is a driving wheel, which is arranged on the frame and corresponds to the upper pressing wheel 54. The two side edges of the box plate 6 enter between the upper and lower pressing wheels 55 after being hot-melted by the hot air gun 53, and are moved to the right by the transmission action thereof and pressed into a box.

[0038] Specifically, the height of the limit plate 3 on the column and the front and rear position of the baffle 31 on the limit plate 3 can be adjusted to adapt to box boards 6 of different specifications, ensure that the box boards 6 are stacked neatly, facilitate transportation, and ensure that the bottom box boards can pass smoothly and only one box board 6 passes.

[0039] Specifically, it also includes a pair of symmetrically arranged guide plates extending from the waiting position to the welding position. The positions of the guide plates correspond to the baffle plates 31 on the same side and are used to guide the pushed box plates.

[0040] The push plate trolley 2 is driven by the trolley motor 23 and the pulley transmission device:

[0041] The pulley transmission device includes a passive wheel and a driving wheel respectively arranged on the left and right sides of the frame, and the two are driven by a chain belt. The driving wheel is driven by the trolley motor 23, and the push plate trolley 2 is connected to the chain belt. Under the drive of the trolley motor 23, the push plate trolley 2 moves back and forth along the track.

[0042] The check block 21 has the characteristics of pushing the box plate in one direction and returning without interference. There are many ways to implement it. In this embodiment, the check block 21 includes a fixed block and a movable button:

[0043] There is a notch on the fixed block, and the movable button is set in the notch. The left end of the movable button is rotatably connected to the fixed block, and the right end is lifted by the spring in the notch and is higher than the surface of the workbench 1. When the push-plate trolley 2 moves to the right, the right end of the movable button pushes the box plate to the next workstation. When the push-plate trolley 2 returns, the right end of the movable button is pressed down, does not interfere with the box plate on the path, and will not push the box plate back.

[0044] The discharge position is also equipped with corresponding sensors to identify the number of stacked box plates, so as to control the addition of box plates and the start and stop of the machine:

[0045] The material-free sensor 11 is located below the workbench 1 at the material discharge position, with the sensing end facing upward. A sensing through hole is reserved on the workbench 1 for identifying whether a box board is placed above. When the material-free sensor 11 identifies that there is no box board above, the machine stops after completing the next board pushing and hot melting;

[0046] A pair of short-material sensors 32 are symmetrically arranged outside the two baffles 31, with the sensing section pointing to the U-shaped space. The baffles 31 are also provided with sensing holes for identifying whether the box boards in the U-shaped space have been reduced to a preset level. When the short-material sensors 32 identify that the box boards in the U-shaped space are insufficient, an alarm is sounded or a warning light is turned on to prompt the staff to replenish the box boards.

[0047] A guide wheel 41 and a support plate 43 are also provided above the waiting position, which are respectively located on the left and right sides of the suction cup cylinder 42. The former is used to adjust the height of one side of the box plate so that it can accurately reach the adsorption area of ​​the suction cup cylinder 42, and the latter is used to lift one side of the box plate so that this side can smoothly enter the C-shaped opening of the supporting block.

[0048] Specifically, an H-shaped bracket 4 is arranged on the waiting position, and two connecting rods of the bracket 4 are mounted on the workbench 1, the middle of the connecting rods is the central axis, and the guide wheel 41, the suction cup cylinder 42 and the support plate 43 are arranged on the central axis in sequence.

[0049] Specifically, the guide plate is fixed to the connecting rod through two mounting blocks and can be adjusted forward and backward to adapt to the size of the box plate.

[0050] The hot air gun 53 needs to be able to move up and down to make it close to or away from the box plate 6, and also needs to be able to move forward and backward to enter between the two sides of the box plate 6 for hot melting:

[0051] The moving device 531 includes an upper connecting plate 511, a vertical cylinder and a horizontal cylinder. The upper connecting plate 511 is fixed on one side of the cross beam 51. The vertical cylinder is arranged on the upper connecting plate 511 with the driving end facing downward. The horizontal cylinder is arranged at the driving end of the vertical cylinder. The hot air gun 53 is arranged at the driving end of the horizontal cylinder through the lower connecting plate 511. When the driving end of the horizontal cylinder is retracted, the heating end of the hot air gun 53 penetrates into the two side edges of the box plate for hot melting. The hot melting position is located between the supporting block and the upper pressure wheel 54.

[0052] Specifically, an additional introduction wheel can be set between the above-mentioned hot melt position and the upper pressure wheel 54 to slightly press down the side of the upper layer of the box board 6 so that the upper and lower layers of the box board 6 are closed and enter between the upper and lower pressure wheels 55.

[0053] The lower pressing wheel 55 is driven by a pressing wheel motor 56. When the box plate moves to a preset position, the lower pressing wheel 55 rotates and cooperates with the upper pressing wheel 54 to drive the box plate to move to the right, thereby completing hot melt welding.

[0054] Specifically, the distance between the upper pressing wheel 54 and the lower pressing wheel 55 is set according to the required hot melt pressure.

[0055] The working principle of the fully automatic hollow plate hot air box forming machine of the present invention is:

[0056] 1. Place the stacked box panels into the U-shaped space of the material discharge position and start the hot air box forming machine;

[0057] 2. The push-plate trolley moves to the right, the first pair of check blocks pushes a box plate to the waiting position, and the push-plate trolley returns;

[0058] 3. During the return process of the push-plate trolley, the flap of the flip cylinder rotates upward to align the upper and lower layers of the waiting box board, and the suction cup cylinder sucks up one side of the box board;

[0059] 4. The plate-pushing trolley moves to the right again. While the first pair of check blocks pushes out a box plate, the second pair of check blocks pushes the box plate in the waiting position into the welding position.

[0060] 5. When the box plate enters the welding position, the hot air gun moves downward and forward, so that its heating end enters the hot melting position;

[0061] 6. The push plate trolley continues to move to the right, and the heating end performs heat melting on the two side edges of the box plate. When the two side edges of the box plate enter the pressing wheel group, the flip cylinder releases the box plate, and the push plate trolley returns. At the same time, the box plate is driven by the pressing wheel group to continue to move to the right to complete the heat melting welding;

[0062] 7. The hot-melt welded box panels are driven by the pressure wheel group to be sent out of the box forming machine and into the collection box. The returning pushing carton repeats the actions of pushing, aligning and sucking up until all the box panels are boxed.

[0063] The beneficial effects of the fully automatic hollow plate hot air box-forming machine of the present invention are:

[0064] 1. Stack the box panels and place them on the workbench. Use the pusher to push the box panels forward. Suck up one side of the box panel at the waiting position. Heat-melt the two sides of the box panel at the welding position and press them together with the pressing wheel. This realizes the fully automatic heat-melting of hollow board box panels, improving production efficiency and quality.

[0065] 2. Set the limit plate with adjustable height and the baffle with adjustable width, so that box plates of different sizes can be stacked at the discharge position;

[0066] 3. Set the flip cylinder to align the upper and lower layers of the box plate, and then use the guide wheel, suction cup cylinder and support plate to accurately guide one side of the box plate into the C-shaped opening of the supporting block, so that the feeding is stable and accurate.

[0067] The above descriptions are merely embodiments of the present invention and are not intended to limit the patent scope of the present invention. Any equivalent structure or equivalent process transformation made using the contents of the present invention specification and drawings, or directly or indirectly applied in other related technical fields, are also included in the patent protection scope of the present invention.

Claims

1. A fully automatic hollow panel hot air box forming machine, characterized in that: include: The workbench is set on the frame and has three working positions from left to right, namely, the material placing position, the waiting position and the welding position; The pusher is set on the frame through the track sliding, and has two pairs of check blocks higher than the workbench surface, which are used to push the box plates at the discharge position and the waiting position to the next position respectively; The limit plate is installed on the right side of the discharge position, with a gap at the bottom for the box plate at the bottom of the discharge position to pass through; The suction cup cylinder is arranged above the waiting position, and a suction cup is arranged at its driving end for sucking up one side of the box board; The hot-melt welding device includes a crossbeam, a supporting arm, a hot air gun and a pressure wheel assembly. The crossbeam is set at the welding position. The upper end of the supporting arm is connected to the crossbeam, and the lower end is used to hold up one side of the box plate. The hot air gun is connected to the crossbeam through a moving device, and its heating end enters or exits the hot-melt space by moving up and down and forward and backward. The pressing wheel group comprises an upper pressing wheel and a lower pressing wheel. The upper pressing wheel is connected to the crossbeam through an elastic device, and the lower pressing wheel is a driving wheel, which is arranged on the frame and corresponds to the upper pressing wheel.

2. The fully automatic hollow panel hot air box forming machine according to claim 1, characterized in that: The check block includes a fixed block and a movable button. The fixed block is provided with a notch. The movable button is arranged in the notch, one end of which is rotatably connected to the fixed block, and the other end is lifted by a spring in the notch and is higher than the workbench surface.

3. A fully automatic hollow panel hot air box forming machine according to any one of claims 1 or 2, characterized in that: A pair of baffles are also provided on the limiting plate, and the baffles and the limiting plate form a U-shaped space for placing stacked box plates.

4. The fully automatic hollow panel hot air box forming machine according to claim 3, characterized in that: The baffle is also provided with a material shortage sensor for prompting the operator to add box panels.

5. The fully automatic hollow panel hot air box forming machine according to claim 3, characterized in that: It also includes a pair of symmetrically arranged guide plates, which extend from the waiting position to the welding position and are used for guiding the pushed box plates.

6. A fully automatic hollow panel hot air box forming machine according to any one of claims 1 or 2, characterized in that: A pair of turning cylinders are also arranged on the right side of the push plate trolley, and a turning plate is provided at the driving end thereof.

7. The fully automatic hollow panel hot air box forming machine according to claim 6, characterized in that: The suction cup cylinder is connected to the frame through a bracket. The bracket is also provided with a guide wheel and a support plate, which are respectively located on the left and right sides of the suction cup cylinder. The former is used to adjust the height of one side of the box board, and the latter is used to hold up one side of the box board.

8. The fully automatic hollow panel hot air box forming machine according to claim 7, characterized in that: A supporting block is arranged at the lower end of the supporting arm. The supporting block has a C-shaped opening and is also used for supporting one side of the box plate.

9. The fully automatic hollow panel hot air box forming machine according to claim 8, characterized in that: A heat insulation board extending to the right side is also arranged on the other side of the supporting block.

10. The fully automatic hollow panel hot air box forming machine according to claim 6, characterized in that: A pair of baffles are also provided on the limiting plate, and the baffles and the limiting plate form a U-shaped space for placing stacked box plates.

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