Efficient automatic production line of hemming tray

Abstract

The invention relates to an efficient automatic production line of a hemming tray. Comprising a conveying mechanism used for conveying a tray base material, and a tray forming mechanism used for conducting one-time forming on the tray base material and arranged above the conveying mechanism from left to right in sequence. The tray cutting mechanism is used for punching the formed tray base material so that the tray base material can be partially separated; and the tray hemming mechanism is used for hemming the tray base material so that the tray base material can be formed into a tray. The invention relates to the technical field of hemmed tray processing. According to the efficient automatic production line for the hemming trays, the tray forming mechanism conducts one-time forming on tray base materials, the tray cutting mechanism conducts punching on the tray base materials to enable the tray base materials to be partially separated, the tray hemming mechanism conducts hemming on the tray base materials to enable the tray base materials to be formed, and continuous uninterrupted machining can be conducted on the multiple trays at a time; a plurality of trays which are connected together are separated during hemming, so that the processing procedure of cutting is saved.

Description

Technical Field

[0001] The invention relates to the technical field of curling pallet processing, and in particular to a high-efficiency automatic production line for curling pallets. Background Art

[0002] In the processing of food trays, the opening edges of the food trays are usually curled to enhance the strength of the food trays. In order to improve the efficiency of curling, food tray curling machines are currently used for curling. Curling has the following advantages:

[0003] (1) Curling can prevent the plastic wrap from being cut by the edge of the box when it is wrapped.

[0004] (2) The curled edge can prevent the edge of the box from scratching the skin during use.

[0005] (3) Curling can increase product strength and prevent deformation.

[0006] However, when the existing curling forming device is loading during processing, the food trays are stacked together, and then a single food tray is sucked by the suction cup for processing each time. During the sucking process, it is easy to suck two food trays at a time, or the food trays are not sucked into place and fall off, which affects the processing efficiency. Summary of the invention

[0007] In view of the deficiencies in the prior art, the present invention provides a highly efficient automated production line for rolled-edge pallets, which solves the above-mentioned problems.

[0008] To achieve the above objectives, the present invention is implemented through the following technical solutions: an efficient automated production line for curled pallets, comprising a conveying mechanism for conveying pallet substrates, a pallet forming mechanism for once forming the pallet substrates arranged from left to right above the conveying mechanism, a pallet cutting mechanism for punching the formed pallet substrates to partially separate them, and a pallet curling mechanism for curling the pallet substrates to form a pallet, the pallet curling mechanism comprising a guide column and an upper movable mold and a lower movable mold respectively arranged above and below the guide column and driven by a hydraulic mechanism, the conveying mechanism is located between the upper movable mold and the lower movable mold, a plurality of lower forming cavities are fixedly connected to the top of the lower movable mold, an inner cavity of the lower forming cavity is provided with air holes, the air holes are connected to an external air pump and a vacuum pump through a three-way valve, and an error correction mechanism is provided in the inner cavity of the lower movable mold;

[0009] The error correction mechanism includes a first moving frame that is driven by a motor to make a Y-axis displacement in the inner cavity of the lower movable mold, the top of the first moving frame is slidably connected to a second moving frame that is driven by a motor to make an X-axis displacement, the top of the second moving frame is fixedly connected to a driving cylinder, the top of the driving cylinder is fixedly connected to a push rod, the top of the push rod is fixedly connected to an electric heating block, the inner cavity of the push rod is rotatably connected to a pressure plate through a rotating rod, grooves that are adapted to the pressure plate are provided on both sides of the push rod, the inner cavity of the push rod is rotatably connected to a driving gear driven by a motor, and the surface of the rotating rod is fixedly connected to a driven gear that meshes with the driving gear. When in use, the tray substrate is transported through the conveying mechanism, and the tray is first transported to the forming mechanism for one-time forming, refer to Figure 6 At this time, multiple pallets are formed that are not curled together, and then conveyed to the pallet cutting mechanism for punching. Figure 7 A pallet with only partial adhesion is formed, and then it is transported to the pallet curling mechanism. The lower movable mold rises upward, and the upper movable mold descends to curl the pallet substrate, and the pallet substrate is punched and separated. At this time, the edge of the upper movable mold descends first to squeeze the rectangular frame, and the rectangular frame compresses the elastic airbag downward. The elastic airbag shrinks and the gas inside enters the air cavity through the pipeline, at which time the rubber sheet is pushed to bulge outward to surround the side of the pallet and apply a slight external pressure. When the upper movable mold rises after curling, the pressure is still there, and the negative pressure suction is applied in conjunction with the air holes below, so that the pallet after slitting and curling can be limited in the lower movable mold to prevent the upper movable mold from sticking and rising. After the curling stamping of the upper movable mold is completed, and the pallet is separated, the air is used to press the pallet. The hole blows air to blow the pallet to prevent it from being stuck in the lower forming cavity. The suction cup then sucks up nine pallets at a time and stacks them on the discharge conveyor belt to form nine pallets. The pallets are then output at one time through the discharge conveyor belt. When a pallet has not been taken out, the first mobile frame and the second mobile frame are moved to drive the driving cylinder to move to the bottom of the pallet. At this time, the electric heating block is heated, and then the driving cylinder drives the electric heating block to rise and abut against the bottom of the pallet. At this time, the bottom of the pallet is melted and then lifted to the top of the pallet. The motor drives the active gear to rotate, driving the driven gear to rotate, driving the pressure plates on both sides to rise to a state perpendicular to the ejector rod, and then the driving cylinder quickly drives the ejector rod to descend, and the pallet is pulled from the lower forming cavity to the bottom for output through the two pressure plates to prevent it from interfering with the subsequent curling process.

[0010] As a further solution of the present invention: a limiting groove for limiting the pressure plate is opened above the push rod. Through the setting of the limiting groove, the pressure plate will abut against the inner cavity of the limiting groove when it rotates ninety degrees, so as to withstand the reaction force, be more stable, and prevent the pallet from falling off when moving downward and pulling the pallet.

[0011] As a further solution of the present invention: the lower movable mold is fixed with an elastic airbag embedded in the four sides, the top of the elastic airbag is fixedly connected to a rectangular frame covering the four sides of the lower movable mold, the top of the lower movable mold is fixedly connected to a spring telescopic rod, the top of the spring telescopic rod is fixedly connected to the bottom of the rectangular frame, and the inner cavities of the multiple lower molding molds are each provided with an air cavity connected to the elastic airbag through a pipeline, the side of the air cavity is sealed and connected to a rubber sheet located around the tray, the inner cavity of the air cavity is fixedly connected to a reset spring, one end of the reset spring is fixedly connected to the side of the rubber sheet, and when in use The lower movable mold rises upward, and the upper movable mold descends to curl the pallet substrate, and the pallet substrate is punched and cut into separate pallets. At this time, the edge of the upper movable mold descends first to squeeze the rectangular frame, and the rectangular frame compresses the elastic airbag downward. The elastic airbag shrinks and the gas inside enters the air cavity through the pipeline, pushing the rubber sheet to bulge outward to surround the side of the pallet and apply slight external pressure. When the upper movable mold rises after curling, the pressure is still there, and the air holes below are used to apply negative pressure suction, so that the pallet after slitting and curling can be limited in the lower movable mold to prevent the upper movable mold from sticking and rising.

[0012] As a further solution of the present invention: the surface of the conveying mechanism is movably connected to a moving frame driven by a three-axis driving mechanism, and a suction cup is fixedly connected to one side of the moving frame. The moving frame is driven by the three-axis driving mechanism to move to adsorb the tray in the inner cavity of the lower movable mold, and then taken out for discharge.

[0013] As a further solution of the present invention: it also includes a discharge conveyor belt arranged on one side of the mobile frame, which sucks nine pallets at a time through a suction cup and then stacks them on the discharge conveyor belt to form nine pallets, which are then output at one time through the discharge conveyor belt.

[0014] As a further solution of the present invention: the lower molding cavity and the lower movable mold are both hollow, and the tray pulled down by the error correction mechanism falls from the gap of the lower movable mold and is output.

[0015] As a further solution of the present invention: both sides of the pallet substrate are overlapped above the side frames of the conveying mechanism, and the side frames of the conveying mechanism are equipped with conveyor belts. The conveyor belts on both sides drive the pallet substrate to move, ensuring that the top and bottom of the pallet substrate are exposed to the outside, which is convenient for subsequent processing.

[0016] Compared with the prior art, the present invention has the following beneficial effects:

[0017] 1. In the present invention, the pallet forming mechanism forms the pallet base material once, the pallet cutting mechanism punches the pallet base material to partially separate it, and the pallet curling mechanism curls the pallet base material to form it. Multiple pallets can be processed continuously and uninterruptedly at one time, and multiple pallets connected together can be separated while curling, thus saving the cutting process.

[0018] 2. In the present invention, when there is a tray that has not been taken out, the first moving frame and the second moving frame are moved to drive the driving cylinder to move to the bottom of the tray. At this time, the electric heating block is heated, and then the driving cylinder drives the electric heating block to rise and abut against the bottom of the tray. At this time, the bottom of the tray is melted and then lifted to the top of the tray. The active gear is driven by the motor to rotate, which drives the driven gear to rotate, and drives the pressure plates on both sides to rise to a state perpendicular to the push rod. Then the driving cylinder quickly drives the push rod to descend, and the tray is pulled from the lower molding cavity to the bottom for output through the two pressure plates to prevent it from interfering with the subsequent curling process.

[0019] 3. In the present invention, the movable mold descends to perform curling forming on the pallet substrate, and the pallet substrate is punched and cut into separate pallets. At this time, the edge of the upper movable mold descends first to squeeze the rectangular frame, and the rectangular frame compresses the elastic airbag downward. The elastic airbag contracts and the gas inside enters the air cavity through the pipeline, and at this time, the rubber sheet is pushed to bulge outward to surround the side of the pallet and apply a slight external pressure. When the upper movable mold rises after curling forming, the pressure is still there, and the air holes below are used to apply negative pressure suction, so that the pallet after slitting and curling can be limited in the lower movable mold to prevent the upper movable mold from sticking and rising. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 It is a structural schematic diagram of the present invention;

[0021] Figure 2 It is a structural cross-sectional view of the lower movable mold of the present invention;

[0022] Figure 3 For the present invention Figure 2 A partial enlarged view of the middle A;

[0023] Figure 4 For the present invention Figure 2 A partial enlarged view of point B in the middle;

[0024] Figure 5 It is a top view of the structure of the lower movable mold of the present invention;

[0025] Figure 6 This is a top view of the structure of the tray of the present invention after one-step molding;

[0026] Figure 7 This is a top view of the structure of the tray of the present invention after partial separation.

[0027] In the figure: 1. conveying mechanism; 2. tray forming mechanism; 3. tray cutting mechanism; 4. tray curling mechanism; 5. discharging conveyor belt; 6. moving frame; 7. suction cup; 8. tray; 41. upper movable mold; 42. lower movable mold; 43. lower forming cavity; 44. first moving frame; 45. second moving frame; 46. driving cylinder; 47. ejector rod; 48. electric heating block; 49. driving gear; 410. driven gear; 411. rotating rod; 412. pressing plate; 413. groove; 414. limiting groove; 415. elastic airbag; 416. rectangular frame; 417. spring telescopic rod; 418. air cavity; 419. return spring; 420. rubber sheet; 421. air hole. DETAILED DESCRIPTION

[0028] In order to further explain the technical means and effects adopted by the present invention to achieve the predetermined invention purpose, the specific implementation mode, structure, characteristics and effects of the present invention are described in detail below in combination with the accompanying drawings and preferred embodiments.

[0029] See also Figure 1-7 The present invention provides a technical solution: an efficient automatic production line for curling pallets, comprising a conveying mechanism 1 for conveying a pallet substrate, a pallet forming mechanism 2 for once forming the pallet substrate arranged from left to right above the conveying mechanism 1, a pallet cutting mechanism 3 for punching the formed pallet substrate to partially separate it, and a pallet curling mechanism 4 for curling the pallet substrate to form a pallet, the pallet curling mechanism 4 comprising a guide column and an upper movable mold 41 and a lower movable mold 42 respectively arranged above and below the guide column and driven by a hydraulic mechanism, the conveying mechanism 1 is located between the upper movable mold 41 and the lower movable mold 42, a plurality of lower forming cavities 43 are fixedly connected to the top of the lower movable mold 42, an inner cavity of the lower forming cavity 43 is provided with air holes 421, the air holes 421 are connected to an external air pump and a vacuum pump through a three-way valve, and an error correction mechanism is provided in the inner cavity of the lower movable mold 42;

[0030] The error correction mechanism includes a first moving frame 44 driven by a motor to make Y-axis displacement in the inner cavity of the lower movable mold 42, the top of the first moving frame 44 is slidably connected to a second moving frame 45 driven by a motor to make X-axis displacement, the top of the second moving frame 45 is fixedly connected to a driving cylinder 46, the top of the driving cylinder 46 is fixedly connected to a push rod 47, the top of the push rod 47 is fixedly connected to an electric heating block 48, the inner cavity of the push rod 47 is rotatably connected to a pressing plate 412 through a rotating rod 411, grooves 413 adapted to the pressing plate 412 are provided on both sides of the push rod 47, the inner cavity of the push rod 47 is rotatably connected to a driving gear 49 driven by a motor, and the surface of the rotating rod 411 is fixedly connected to a driven gear 410 meshing with the driving gear 49. When in use, the tray substrate is transported through the conveying mechanism 1, and the tray is first transported to the forming mechanism 2 for one-time forming, refer to Figure 6At this time, a plurality of pallets 8 connected together without curling are formed, and then the pallets 8 are transported to the pallet cutting mechanism 3 for punching. Figure 7 A pallet 8 with only partial adhesion is formed, and then it is transported to the pallet curling mechanism 4, the lower movable mold 42 rises upward, and the upper movable mold 41 descends to curl the pallet substrate, and the pallet 8 is punched out of the pallet substrate. At this time, the edge of the upper movable mold 41 first descends to squeeze the rectangular frame 416, and the rectangular frame 416 compresses the elastic airbag 415 downward. The elastic airbag 415 shrinks and the internal gas enters the air cavity 418 through the pipeline, and at this time, the rubber sheet 420 is pushed to bulge outward to surround the side of the pallet 8 and apply a slight external pressure. When the upper movable mold 41 rises after curling, the pressure is still there, and the air hole 421 below is used to apply negative pressure suction, so that the pallet 8 after slitting and curling can be limited in the lower movable mold 42 to prevent the upper movable mold 41 from adhering and rising. After the curling stamping of the upper movable mold 41 is completed, and the pallet 8 is separated, the air hole 42 is used to press the upper movable mold 41. 1 Blow air to blow the tray 8 to prevent it from being stuck in the lower molding cavity 43, and then the suction cup 7 sucks nine trays 8 at a time, and then stacks them on the discharge conveyor belt 5 to form nine stacks, and then outputs them at a time through the discharge conveyor belt 5. When there is a tray 8 that has not been taken out, the first mobile frame 44 and the second mobile frame 45 move and drive the driving cylinder 46 to move to the bottom of the tray 8. At this time, the electric heating block 48 is heated, and then the driving cylinder 46 drives the electric heating block 48 to rise and abut against the bottom of the tray 8. At this time, the bottom of the tray 8 is melted and then lifted to the top of the tray 8. The active gear 49 is driven by the motor to rotate, driving the driven gear 410 to rotate, driving the two side pressure plates 412 to rise to a state perpendicular to the ejector rod 47, and then the driving cylinder 46 quickly drives the ejector rod 47 to descend, and the tray 8 is pulled from the lower molding cavity 43 to the bottom for output through the two pressure plates 412 to prevent it from interfering with the subsequent curling process.

[0031] A limiting groove 414 for limiting the pressure plate 412 is provided above the top rod 47. Through the setting of the limiting groove 414, the pressure plate 412 will abut against the inner cavity of the limiting groove 414 when it rotates ninety degrees, so as to withstand the reaction force and be more stable. When moving downward and pulling the tray 8, it can prevent the tray 8 from falling off.

[0032] The lower movable mold 42 is fixed with an elastic airbag 415 embedded in the four sides, the top of the elastic airbag 415 is fixedly connected to a rectangular frame 416 covering the four sides of the lower movable mold 42, the top of the lower movable mold 42 is fixedly connected to a spring telescopic rod 417, the top of the spring telescopic rod 417 is fixedly connected to the bottom of the rectangular frame 416, and the inner cavities of the multiple lower molding mold cavities 43 are all provided with air cavities 418 connected to the elastic airbag 415 through a pipeline, the side of the air cavity 418 is sealed and connected to a rubber sheet 420 located around the tray 8, and the inner cavity of the air cavity 418 is fixedly connected to a reset spring 419, one end of the reset spring 419 is fixedly connected to the side of the rubber sheet 420, and the lower movable mold 42 is moved to the upper surface of the lower movable mold 42 during use. The upper movable mold 41 rises, and the upper movable mold 41 descends to perform curling molding on the pallet substrate, and the pallet 8 is punched out of the pallet substrate. At this time, the edge of the upper movable mold 41 descends first to squeeze the rectangular frame 416, and the rectangular frame 416 compresses the elastic airbag 415 downward. The elastic airbag 415 shrinks the internal gas and enters the air cavity 418 through the pipeline. At this time, the rubber sheet 420 is pushed to bulge outward to surround the side of the pallet 8 and apply a slight external pressure. When the upper movable mold 41 rises after the curling molding, the pressure is still there, and the air hole 421 below applies negative pressure suction, which can limit the pallet 8 after slitting and curling molding in the lower movable mold 42 to prevent the upper movable mold 41 from sticking and rising.

[0033] The surface of the conveying mechanism 1 is movably connected to a moving frame 6 driven by a three-axis driving mechanism, and a suction cup 7 is fixedly connected to one side of the moving frame 6. The three-axis driving mechanism drives the moving frame 6 to move to adsorb the tray 8 in the inner cavity of the lower movable mold 42, and then take it out for discharge.

[0034] It also includes a discharging conveyor belt 5 arranged on one side of the mobile frame 6, which sucks nine pallets 8 at a time through the suction cup 7, and then stacks them on the discharging conveyor belt 5 to form nine pallets, which are then output at one time through the discharging conveyor belt 5.

[0035] The lower molding cavity 43 and the lower movable mold 42 are both hollow, and the tray 8 pulled down by the error correction mechanism falls from the gap of the lower movable mold 42 and is output.

[0036] The two sides of the pallet substrate are overlapped above the two side frames of the conveying mechanism 1. The two side frames of the conveying mechanism 1 are equipped with conveyor belts. The conveyor belts on both sides drive the pallet substrate to move, ensuring that the top and bottom of the pallet substrate are exposed to the outside, which is convenient for subsequent processing.

[0037] The above description is only a preferred embodiment of the present invention and does not limit the present invention in any form. Although the present invention has been disclosed as a preferred embodiment as above, it is not used to limit the present invention. Any technical personnel in this field can make some changes or modify the technical contents disclosed above into equivalent embodiments without departing from the scope of the technical solution of the present invention. However, any brief modifications, equivalent changes and modifications made to the above embodiments based on the technical essence of the present invention without departing from the content of the technical solution of the present invention are still within the scope of the technical solution of the present invention.

Claims

1. An efficient automated production line for rolled pallets, comprising a conveying mechanism (1) for conveying a pallet substrate, a pallet forming mechanism (2) arranged above the conveying mechanism (1) from left to right for once forming the pallet substrate, a pallet cutting mechanism (3) for punching the formed pallet substrate to partially separate it, and a pallet rolling mechanism (4) for rolling the pallet substrate to form a pallet, characterized in that: The pallet curling mechanism (4) comprises a guide column and an upper movable mold (41) and a lower movable mold (42) respectively arranged above and below the guide column and driven by a hydraulic mechanism, the conveying mechanism (1) is located between the upper movable mold (41) and the lower movable mold (42), a plurality of lower molding cavities (43) are fixedly connected to the top of the lower movable mold (42), an inner cavity of the lower molding cavity (43) is provided with air holes (421), the air holes (421) are connected to an external air pump and a vacuum pump through a three-way valve, and an error correction mechanism is provided in the inner cavity of the lower movable mold (42); The error correction mechanism comprises a first movable frame (44) driven by a motor to make Y-axis displacement in the inner cavity of the lower movable mold (42); the top of the first movable frame (44) is slidably connected to a second movable frame (45) driven by a motor to make X-axis displacement; the top of the second movable frame (45) is fixedly connected to a driving cylinder (46); the top of the driving cylinder (46) is fixedly connected to a push rod (47); the top of the push rod (47) is fixedly connected to an electric heating block (48); the inner cavity of the push rod (47) is rotatably connected to a pressing plate (412) through a rotating rod (411); grooves (413) adapted to the pressing plate (412) are provided on both sides of the push rod (47); the inner cavity of the push rod (47) is rotatably connected to a driving gear (49) driven by a motor; and the surface of the rotating rod (411) is fixedly connected to a driven gear (410) meshing with the driving gear (49).

2. The efficient automated production line for rolled-edge pallets according to claim 1, characterized in that: A limiting groove (414) for limiting the position of the pressure plate (412) is provided above the push rod (47).

3. The efficient automated production line for rolled-edge pallets according to claim 1, characterized in that: The lower movable mold (42) is fixed with an elastic airbag (415) embedded in the four sides, the top of the elastic airbag (415) is fixedly connected to a rectangular frame (416) covering the four sides of the lower movable mold (42), the top of the lower movable mold (42) is fixedly connected to a spring telescopic rod (417), the top of the spring telescopic rod (417) is fixedly connected to the bottom of the rectangular frame (416), the inner cavities of the multiple lower molding mold cavities (43) are all provided with air cavities (418) connected to the elastic airbag (415) through a pipeline, the side of the air cavity (418) is sealed and connected to a rubber sheet (420) located around the tray (8), the inner cavity of the air cavity (418) is fixedly connected to a reset spring (419), and one end of the reset spring (419) is fixedly connected to the side of the rubber sheet (420).

4. The efficient automated production line for rolled-edge pallets according to claim 1, characterized in that: The surface of the conveying mechanism (1) is movably connected to a moving frame (6) driven by a three-axis driving mechanism, and a suction cup (7) is fixedly connected to one side of the moving frame (6).

5. The efficient automated production line for rolled-edge pallets according to claim 1, characterized in that: It also includes a discharging conveyor belt (5) arranged on one side of the moving frame (6).

6. The efficient automated production line for rolled-edge pallets according to claim 1, characterized in that: The lower molding cavity (43) and the lower movable mold (42) are both hollow.

7. The efficient automated production line for rolled-edge pallets according to claim 1, characterized in that: The two sides of the tray base material are overlapped above the two side frames of the conveying mechanism (1), and the two side frames of the conveying mechanism (1) are equipped with conveyor belts.

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