A mechanical device for producing environmentally friendly lunch boxes from natural wood veneer raw materials

Abstract

A mechanical device for producing environmentally friendly lunch boxes from pure natural wood veneer raw materials, belonging to the technical field of lunch box manufacturing. The device includes a mechanical seat frame; a workbench arranged on the mechanical seat frame; a silo lifting device placed on one side of the workbench for providing materials; a feeding device installed on the workbench for transporting the materials from the silo lifting device to the workbench; a dispensing device erected above the workbench for dispensing glue on the materials on the workbench; an outer mold forming mechanism and an outer mold driving device installed on the workbench for forming the materials; a rotating circulating turntable for curing the formed products; an inner mold forming assembly installed on the rotating circulating turntable; and a finished product conveying device for conveying the formed products. The present invention can produce a mechanical processing device that is unique and suitable for using natural wood veneer as raw materials to form disposable edible lunch boxes at one time.

Description

Technical Field

[0001] The present invention belongs to the technical field of lunch box manufacturing, and particularly relates to a mechanical device for producing environment-friendly lunch boxes with natural wood veneer as raw materials. Background Art

[0002] Wood veneer lunch boxes are widely loved by consumers for their beautiful appearance, energy conservation and environmental protection. However, the thickness of the wood veneer for making natural wood veneer lunch boxes is 0.5 - 2 mm. Due to its inherent characteristics such as uneven thickness, prominent texture, easy to fold, easy to crack, easy to deform, and excessive internal stress during folding, etc., it is not suitable for processing and manufacturing by existing high-profile mechanical equipment.

[0003] According to market research, most of the wood veneer lunch boxes made of natural wood veneer as raw materials in the existing market are made by manual labor. Currently, no mature machinery for making lunch boxes with natural wood veneer as the basic raw material has been found. Manual production is time-consuming, laborious, with high labor intensity and low efficiency. Especially, hygiene cannot be guaranteed during the production process, which is not conducive to human health. Summary of the Invention

[0004] The purpose of the present invention is to provide a mechanical device for producing environment-friendly lunch boxes with natural wood veneer as raw materials, so as to solve the problems existing in the above background art.

[0005] The technical solution adopted by the present invention is: a mechanical device for producing environment-friendly lunch boxes with natural wood veneer as raw materials, including a mechanical base frame; a workbench arranged on the mechanical base frame; a bin lifting device placed on one side of the workbench for providing materials; a feeding device installed on the workbench for transporting materials from the bin lifting device to the workbench; a dispensing device erected above the workbench for dispensing glue on the materials on the workbench; an outer mold forming mechanism and an outer mold driving device installed on the workbench for forming the materials; a rotating circulation turntable for curing the formed products; an inner mold forming assembly installed on the rotating circulation turntable; and a finished product conveying device for conveying the formed products.

[0006] The beneficial effects of the present invention are:

[0007] The present invention reasonably applies the achievements of automation technology and mechanical principles. On the basis of overcoming the inherent characteristics of natural wood veneer, it gets rid of the inadaptability of existing high-speed forming machinery to natural wood veneer, and manufactures a unique mechanical processing equipment suitable for using natural wood veneer as raw materials to form disposable edible lunch boxes at one time. It has certain practical significance for reducing manual labor intensity, improving production efficiency, improving the hygienic environment, promoting the development of productive forces, especially for environmental protection and human health. Description of the Drawings

[0008] Figure 1 is a schematic structural diagram of the present invention;

[0009] Figure 2 It is a schematic structural diagram of the silo lifting device of the present invention;

[0010] Figure 3 It is a schematic structural diagram of the feeding device of the present invention;

[0011] Figure 4 It is a schematic structural diagram of the dispensing device of the present invention;

[0012] Figure 5 It is a schematic structural diagram of the inner mold forming assembly of the present invention;

[0013] Figure 6 It is a schematic structural diagram of the outer mold driving device of the present invention;

[0014] Figure 7 It is a schematic structural diagram of the outer mold forming mechanism of the present invention;

[0015] Figure 8 It is a schematic structural diagram of the rotary circulation turntable of the present invention;

[0016] Figure 9 It is a schematic structural diagram of the finished product conveying device of the present invention;

[0017] Figure 10 It is a schematic diagram of the pre-cutting of materials of the present invention;

[0018] Among them: 1. Manipulator forming cylinder 1; 2. Outer mold ship's side upper folding plate; 3. Manipulator forming cylinder 2; 4. Hopper servo motor; 5. Hopper feeding slide; 6. Working platform fixing bracket; 7. Pushing cylinder; 8. Pressing cylinder 1; 9. Feeding push rod; 10. Vacuum suction cup 1; 11. Feeding guide rail; 12. Pushing guide groove; 13. Transmission chain guide groove; 14. Straight ear push plate; 15. Manipulator cylinder mounting plate; 16. Transmission servo motor; 17. Glue dispensing valve bracket; 18. Multi-position cylinder; 19. Inner mold forming assembly; 20. Outer mold driving device; 21. Turntable fixing shaft; 22. Turntable driving motor; 23. Solenoid valve; 24. Pneumatic and electrical integrated slip ring; 25. Heat insulation backing plate; 26. Turntable fixing seat; 27. Driven gear ring; 28. Glue dispenser; 29. Glue dispensing cylinder; 30. Glue dispensing valve; 31. Bracket seat; 32. Pressing cylinder 1; 33. Ship's side outer mold upper folding driving cylinder; 34. Bow outer mold upper folding driving cylinder; 35. Outer mold driving cylinder fixing seat; 36. Roller shaft; 37. Bow upper folding plate push rod; 38. Guide pillar and guide sleeve mounting plate; 39. Flange bearing; 40. Guide pillar; 41. Ship's side push rod; 42. Bow upper folding plate guide slide cover; 43. Working platform fixing seat; 44. Bow upper folding push plate; 45. Ship's side pushing roller; 46. Outer mold upper folding plate pin shaft; 47. Hopper lifting driving platform; 48. Outer mold bow upper folding plate; 49. Thermal resistance temperature sensor mounting hole; 50. Heating rod mounting hole; 51. Pin connection fixing plate; 52. Fixture; 53. Double-rail guide pillar; 54. Fixture driving cylinder; 55. Rotating turntable; 56. Flange bearing; 57. Fixture return tension spring; 58. Guide pillar connection fixing plate; 59. Ship model return compression spring; 60. Veneer glue dispensing position; 61. Veneer cutting position; 62. Bow veneer upper folding position; 63. Ship's side veneer upper folding position; 64. Hopper lifting limit sensor; 65. Hopper material positioning lifting guide rail; 66. Working platform installation fixing hole; 67. Conveyor servo motor; 68. Finished product receiving cylinder; 69. Vacuum suction cup 2; 70. Synchronous belt; 71. Counting sensor; 72. Synchronous belt guide rail baffle; 73. Material; 74. Machine seat frame; 75. Workbench; 76. Hopper lifting device; 77. Feeding device; 78. Glue dispensing device; 79. Outer mold forming mechanism; 80. Rotating and circulating turntable; 81. Finished product conveying device; 82. Hopper lifting linear slide; 83. Manipulator vacuum suction cup connecting plate; 84. Glue dispensing rack; 85. Inner mold; 86. Outer mold folding plate; 87. Bottom mold; 88. Manipulator rubber-coated roller; 89. Manipulator arm joint connecting plate; 90. Arm tension spring; 91. Forming plate; 92. Conveyor frame; 93. Table board; 94. Transmission chain. Detailed implementation mode

[0019] Such as Figures 1 to 10As shown, a mechanical device for producing environmentally friendly lunch boxes with pure natural veneer raw materials includes a mechanical base 74; a workbench 75 set on the mechanical base 74, and the workbench 75 can be fixed on the mechanical base 74 by a work platform fixing frame 6; a hopper lifting device 76 placed on one side of the workbench 75 for providing material 73; a feeding device 77 installed on the workbench 75 for transporting the material 73 from the hopper lifting device 76 to the workbench 75; a dispensing device 78 mounted above the workbench 75 for dispensing glue on the material 73 on the workbench 75; an outer mold forming mechanism 79 and an outer mold driving device 20 installed on the workbench 75 for forming the material; a rotating circulation turntable 80 for curing the molded product; an inner mold forming assembly 19 installed on the rotating circulation turntable 80 and a finished product conveying device 81 for conveying the molded product.

[0020] like Figure 2 As shown, the silo lifting device 76 includes a silo loading slide 5 and a silo lifting limit sensor 64; the materials 73 are stacked in sequence on the silo lifting drive platform 47 of the silo loading slide 5, and the silo lifting limit sensor 64 is installed at the upper end of the silo loading slide 5 to sense the position of the material 73 at the top; the silo loading slide 5 includes a silo lifting linear slide 82, a silo lifting drive platform 47 and four silo material positioning lifting guide rails 65, the silo lifting linear slide 82 is driven by the silo servo motor 4, the silo lifting drive platform 47 is fixed on the slider of the silo lifting linear slide 82, and the four silo material positioning lifting guide rails 65 are fixed at the four corners of the silo lifting drive platform 47.

[0021] The material 73 is loaded onto the silo lifting drive platform 47, and the vacuum suction cup 10 of the feeding device 77 is set by the silo servo motor 4 according to the relevant operating data set by the feeding device 77, the dispensing device 78, the outer mold drive device 20, and the inner mold forming component 19. The lifting speed is set to match the relevant operating data, and the material 73 is lifted synchronously for feeding by the feeding device 77. When the material 73 is lifted to the silo lifting limit sensor 64, the silo lifting limit sensor 64 sends a signal to the TPC control system to stop the silo servo motor 4 from working, and at the same time, a buzzer alarm is issued to remind the staff that the material in the silo has been used up, and the silo automatically returns to the initial position to wait for refilling.

[0022] like Figure 3 As shown, the feeding device 77 includes a rotary downward pressure cylinder 8 and at least one vacuum suction cup 10; the movable end of the downward pressure cylinder 8 is connected to the robot vacuum suction cup connecting plate 83, and at least one vacuum suction cup 10 is installed on the robot vacuum suction cup connecting plate 83.

[0023] The downward pressure cylinder 8 adopts MkB 90° rotating downward pressure cylinder;

[0024] The fixed end of the downward pressure cylinder 8 is installed on the movable end of the downward pressure cylinder 32, and the downward pressure cylinder 32 adopts the MGPM downward pressure cylinder.

[0025] The downward pressure cylinder 8 rotates 90 degrees and presses down to transfer the material 73 on the silo lifting drive platform 47 to the workbench 75. The push cylinder 7 pushes the material 73 horizontally to the dispensing station on the workbench 75, and the dispensing valve 30 dispenses the material.

[0026] like Figure 4 As shown, the dispensing device 78 includes a dispensing valve bracket 17, a dispensing machine 28, a dispensing cylinder 29, a bracket seat 31 and a dispensing frame 84; the dispensing valve 30 of the dispensing machine 28 is installed on the movable end of the dispensing cylinder 29 through the dispensing valve bracket 17, and the fixed end of the dispensing cylinder 29 is set above the dispensing station of the workbench 75 through the dispensing frame 84.

[0027] Taking the boat-shaped lunch box as an example, the number of the dispensing valves 30 is set to four.

[0028] The dispensing cylinder 29 adopts an MGPM stroke-adjustable cylinder.

[0029] like Figure 5 As shown, the inner mold forming assembly 19 includes a connecting assembly, a multi-position cylinder 18, two clamps 52, two clamp driving cylinders 54 and a clamp return tension spring 57; the inner mold 85 is mounted on the rotating turntable 55 of the rotating circulation turntable 80 through the connecting assembly, and the two clamps 52 are arranged at both ends of the inner mold 85. The two clamps 52 are hinged to the shaft pin connecting fixed plate 51, and the upper ends of the two clamps 52 are connected by a clamp return tension spring 57. The rotation of the two clamps 52 is driven by the clamp driving cylinder 54. Cylinder 54 drives, and the two clamps drive cylinder 54 are installed and fixed on the axle pin connection fixing plate 51. The inner mold 85 and the two clamps 52 are provided with a heating rod mounting hole 50 for installing a heating rod, and the inner mold 85 is provided with a thermistor temperature sensor mounting hole 49 for installing a temperature sensor. The multi-position cylinder 18 pushes the inner mold 85 up and down through the guide column connection fixing plate 58. The multi-position cylinder 18 is installed on the mechanical mount 74 through the bracket seat 31, and the dispensing frame 84 is installed and fixed on the bracket seat 31.

[0030] A heat insulating pad 25 is provided between the shaft pin connection fixing plate 51 and the clamp driving cylinder 54 .

[0031] The connecting component includes a double-rail guide post 53, a guide post connecting fixed plate 58 and a model boat return compression spring 59; the double-rail guide post 53 is connected to the inner mold 85 through the rotating turntable 55 of the fixed flange bearing 56, the top of the double-rail guide post 53 is connected by the guide post connecting fixed plate 58, the model boat return compression spring 59 is sleeved on the double-rail guide post 53 and its two ends respectively abut against the flange bearing 56 and the guide post connecting fixed plate 58, and the double-rail guide post 53 connected to the inner mold 85 moves up and down through the flange bearing 56 fixedly installed on the rotating turntable 55.

[0032] The multi-position cylinder 18 is arranged corresponding to the double-rail guide post 53 up and down.

[0033] The inner mold forming component 19 is the forming skeleton of the lunch box, which coincides with the production of the veneer lunch box 1:1. The inner mold 85 and the two jigs 52 have the functions of pressurization and heating. The close combination of the inner mold 85 and the outer mold is the basis for tableware forming. Heating and pressurization can quickly cure the environmentally friendly adhesive used for the formed lunch box, thereby improving the production efficiency of the machine. In particular, heating and pressurization of materials with large internal stress such as veneer are essential technical methods. At the same time, the inner mold 85 is equipped with an automatic temperature control system, which can set the working holding time and release time of the jig 52 according to the curing temperature and curing time of the adhesive, and achieve the purpose of automatic demoulding on time and in place.

[0034] As Figure 6 shown, the outer mold driving device 20 includes a plurality of pushing cylinders and a plurality of push rods; the fixed ends of the plurality of pushing cylinders are all installed below the workbench 75, a push rod is installed on the movable end of each pushing cylinder, the plurality of push rods are arranged around the material 73 and abut against the bottom surface of the outer mold folding plate 86 of the outer mold forming mechanism 79, the material 73 is laid flat on the outer mold folding plate 86, and the plurality of push rods push the material 73 upward to form.

[0035] The outer mold driving device 20 is used to push the material 73 to bend upward, and the arrangement of the pushing cylinders and the push rods is set according to the shape of the required lunch box.

[0036] As Figure 6 shown, for example, when making a boat-shaped lunch box,

[0037] The plurality of push rods are respectively the boat side push rods 41 and two bow upper folding push rods 37 arranged at both ends of the boat side push rods 41, and the plurality of pushing cylinders are respectively the boat side outer mold upper folding driving cylinders 33 and two bow outer mold upper folding driving cylinders 34;

[0038] The lower ends of the two bow upper folding push rods 37 are installed on the corresponding bow outer mold upper folding driving cylinders 34, and the upper ends of the two bow upper folding push rods 37 are both connected with bow upper folding push plates 44 that are inclined outward from bottom to top. The two bow upper folding push plates 44 are used to push the material 73 to form the bow.

[0039] The upper end of the ship's side push rod 41 is connected to the middle part of the horizontally arranged roller shaft 36. The two ends of the roller shaft 36 are rotatably installed with ship's side pushing rollers 45. The two ship's side pushing rollers 45 are used to push the upper folding plate 2 of the outer mold of the ship's side, and further push the material 73 to form the ship's side;

[0040] The ship's side outer mold upper folding driving cylinder 33 and the two bow outer mold upper folding driving cylinders 34 are both installed on the outer mold driving cylinder fixing seat 35, and are installed under the workbench 75 through the workbench fixing seat 43. The movable ends of the two bow outer mold upper folding driving cylinders 34 both pass through the guide post and guide sleeve mounting plate 38 through the flange linear sliding sleeve. The movable end of the ship's side outer mold upper folding driving cylinder 33 abuts against the guide post and guide sleeve mounting plate 38. The lower end of the ship's side push rod 41 is installed on the guide post and guide sleeve mounting plate 38.

[0041] The upper ends of the two bow upper folding plate push rods 37 both pass through the slideways provided on the workbench fixing seat 43 and are limited by the bow upper folding plate guide slideway gland 42. The outer mold folding plate 86 is fixed on the workbench fixing seat 43. The workbench fixing seat 43 is supported by two guide posts 40 installed on the outer mold driving cylinder fixing seat 35. The guide posts 40 pass through the flange bearings 39 and are installed on the outer mold driving cylinder fixing seat 35.

[0042] The outer mold driving device 20 is the driving mechanism for completing the ship-shaped lunch box and is also one of the key mechanisms for the forming of the ship-shaped lunch box. The working actions of the ship's side outer mold upper folding driving cylinder 33 and the two bow outer mold upper folding driving cylinders 34 are all completed under the instructions of the TPC control system. After the veneer enters the forming working area of the workbench 75, after being accurately positioned by the infrared diffuse reflection laser sensor c here, the infrared diffuse reflection laser sensor c sends a signal to the TPC control system, and then the TPC control system instructs the inner mold forming assembly 19 to fall onto the veneer. Then, the TPC control system sequentially issues instructions to the bow outer mold upper folding driving cylinder 34 and the ship's side outer mold upper folding driving cylinder 33 to complete the upper folding working procedure of the outer mold.

[0043] As Figure 7 shown, the outer mold forming mechanism 79 includes a manipulator forming cylinder one 1, a manipulator forming cylinder two 3, a manipulator cylinder mounting plate 15 and an outer mold folding plate 86; the manipulator forming cylinder one 1 and the manipulator forming cylinder two 3 are arranged opposite to each other on both sides of the outer mold folding plate 86. The manipulator forming cylinder two 3 is installed on the feeding guide rail 11 fixed to the workbench 75 through the manipulator cylinder mounting plate 15 with a gap, facilitating the transportation of the material 73 from the gap between the manipulator forming cylinder two 3 and the workbench 75 onto the outer mold folding plate 86. The movable ends of the manipulator forming cylinder one 1 and the manipulator forming cylinder two 3 both pass through the manipulator rubber-coated rollers on the manipulator arm, and directly push the folded ship's side material 73 in the preset sequence of the tpc to complete the forming of the bow.

[0044] The outer mold folding plate 86 and the manipulator are both used for material forming. The shapes of the outer mold folding plate 86 and the manipulator are set according to the shape of the required lunch box.

[0045] For example, when making a boat-shaped lunch box, the outer mold folding plate 86 includes a bottom mold 87 installed and fixed on the working platform fixing seat 43 of the outer mold driving device 20 through the working platform installation fixing hole 66, two outer mold boat side upper folding plates 2 arranged on the front and rear sides of the bottom mold 87 and rotatably connected to the bottom mold 87 through the outer film upper folding plate pin shaft 46, and an outer mold boat head upper folding plate 48 arranged on the left and right sides of the bottom mold 87 and crease-connected to the bottom mold 87.

[0046] The manipulator includes a forming plate 91, an arm tension spring 90, two mechanical arm joint connecting plates 89, and two manipulator rubber-coated rollers 88; the forming plate 91 is installed on the movable end of the manipulator forming cylinder one 1 or the manipulator forming cylinder two 3 along the length direction of the outer mold boat side upper folding plate 2, one ends of the two mechanical arm joint connecting plates 89 are respectively hinged to both ends of the forming plate 91, the other ends of the two mechanical arm joint connecting plates 89 are both installed with corresponding manipulator rubber-coated rollers 88, the outer mold boat side upper folding plate 2 is arranged between the two manipulator rubber-coated rollers 88, and an arm tension spring 90 is connected between the two mechanical arm joint connecting plates 89.

[0047] As Figure 8 shown, the rotary circulating turntable 80 includes a turntable fixed shaft 21, a turntable driving motor 22, a solenoid valve 23, a pneumatic and electric integrated slip ring 24, a rotary turntable 55, and a turntable fixing seat 26; the rotary turntable 55 is rotatably installed on the turntable fixing seat 26 through the turntable fixed shaft 21, the turntable driving motor 22 drives the rotary turntable 55 to rotate through a transmission mechanism, an inner mold forming assembly 19 is installed on the rotary turntable 55, the pneumatic and electric integrated slip ring 24 is installed at the center of the upper surface of the rotary turntable 55, and the solenoid valve 23 is used to control the clamp driving cylinder 54 and is installed on the rotary turntable 55. The pneumatic and electric integrated slip ring 24 is used for the circuit conduction of the solenoid valve 23, the temperature sensing signal conduction of the thermistor on the inner mold 85, and the circuit conduction of the heating rod on the inner mold 85.

[0048] The solenoid valve 23 adopts a three-position five-way cylinder solenoid valve.

[0049] The transmission mechanism adopts a gear and ring gear transmission mechanism, and the driving gear of the gear and ring gear transmission mechanism is sleeved on the output shaft of the turntable driving motor 22. The driven ring gear 27 of the gear transmission mechanism is coaxially arranged with the rotary turntable 55 and fixed on the bottom surface of the rotary turntable 55.

[0050] The rotating and circulating turntable 80 is a device that rotates several in-mold forming components 19 installed on the rotating turntable 55 to remove the formed but not yet adhesively cured lunch boxes from the workbench 75. During the rotation process, its rotation speed is set according to the curing time and temperature characteristics of the adhesive and the working speed of other mechanisms. The size of its diameter and the number of installed in-mold forming components 19 are also determined according to the characteristics of the adhesive. The advantage of this design is that the preliminarily formed and uncured lunch boxes can quickly leave the forming station of the workbench 75, and then the next in-mold 85 can also quickly enter the working state. This greatly solves the problem of the in-mold 85 occupying the forming station time, and reasonably transfers the pressurizing and heating time to the circulation of the rotating turntable 55, maximizing the overall mechanical working efficiency. And this design of the rotating turntable 55 completely depends on the pneumatic and electrical integrated slip ring 24 installed on the rotating turntable 55. Its reasonable application is the essence of the successful operation of the rotating turntable 55. First of all, the pneumatic and electrical integrated slip ring 24 is a scientific and technological component that integrates gas, electricity, signals and temperature control sensor signals. Its application enables the rotating turntable 55 to still work normally in terms of gas, electricity and signals while rotating. Furthermore, while the rotating turntable 55 is rotating, the fixture 52 can still complete all the actions set by the TPC control system, making the machine more adaptable and expandable.

[0051] As Figure 9 shown, the finished product conveying device 81 includes a synchronous belt 70, a counting sensor 71, a synchronous belt guide rail baffle 72, a conveying frame body 92, at least one second vacuum suction cup 69 and at least one finished product receiving cylinder 68; at least one second vacuum suction cup 69 is installed at the front end of the conveying frame body 92 for removing the lunch box from the in-mold 85 and placing it on the synchronous belt 70. Each second vacuum suction cup 69 is installed on the corresponding finished product receiving cylinder 68 for adjusting the height of the second vacuum suction cup 69. The synchronous belt 70 is laid on the conveying frame body 92. The synchronous belt guide rail baffle 72 is arranged on the conveying frame body 92 along the conveying direction of the synchronous belt 70. The counting sensor 71 is installed on the conveying frame body 92 for recording the number of finished products conveyed on the synchronous belt 70.

[0052] The synchronous belt 70 is driven by a conveying servo motor 67.

[0053] The finished product conveying device 81 removes the cured finished product lunch boxes on the rotating turntable 55 from the in-mold. While the fixture 52 completes the clamping work, it sends a signal to the TPC. At the same time, the finished product receiving cylinder 68 receives the TPC instruction, removes the lunch box from the in-mold 85 and places it on the synchronous belt 70, and conveys it to the packing place to enter the packing process. The reason for using the second vacuum suction cup 69 is to adopt a forced demolding method to quickly separate the lunch box that occasionally adheres to the in-mold 85 under special circumstances, which can ensure the effective operation of the in-mold 85 and make the machine operate normally without affecting the production of the next lunch box.

[0054] like Figure 1 、 Figure 7 As shown, the workbench 75 includes a table panel 93, two feeding push rods 9, two feeding guide rails 11 and two straight ear push plates 14; feeding guide rails 11 are provided on both sides of the table panel 93 along its length direction, and two pushing guide grooves 12 are provided on the table panel 93 along its length direction, and the starting ends of the two pushing guide grooves 12 are set at the hopper lifting device 76 and end at the dispensing device 78, the two feeding push rods 9 are respectively inserted into the corresponding pushing guide grooves 12 and installed on the pushing cylinder 7, the two feeding push rods 9 push the material 73 along the pushing guide groove 12 from the hopper lifting device 76 to the dispensing device 78, a conveying chain 94 is installed on the bottom surface of the table panel 93 below the dispensing device 78, and two transmission chain guide grooves 13 are provided on the table panel 93, and the two straight ear push plates 14 provided on the transmission chain 94 pass through the transmission chain guide groove 13 to push the material 73 and transport the glued material 73 to the molding station of the workbench 75.

[0055] On the table panel 93, infrared diffuse reflection laser sensors a, b and c are provided in sequence at the starting end of the push guide groove 12, the starting end of the transmission chain guide groove 13 and the forming station of the workbench 75.

[0056] The starting end of the transmission chain guide groove 13 is a dispensing station, and the rear end of the transmission chain guide groove 13 is a molding station, where an external mold molding mechanism 79 and an external mold driving device 20 are installed.

[0057] The push cylinder 7 adopts a TN cylinder, and its fixed end is installed under the table panel 93.

[0058] The conveyor chain 94 is driven by the transmission servo motor 16 .

[0059] In order to facilitate the shaping of the material 73, the material 73 needs to be cut before being placed into the silo lifting device 76. Figure 10 As shown,

[0060] For example, when making a boat-shaped lunch box, the material 73 is rectangular veneer, and two inclined notches are cut inward from the two wide ends of the rectangular veneer, so that the rectangular veneer is divided into two trapezoidal movable ends as the bow veneer upper folding position 62 used as the bow, the outer end of the notch is the veneer gluing position 60, the inner end of the notch is the veneer cutting position 61, and the two long sides of the rectangular veneer are the side veneer upper folding positions 63 used as the side.

[0061] The production process is as follows:

[0062] First, the cut veneer is lifted to the vacuum suction cup 10 of the feeding device 77 by the bin lifting device 76, and then the veneer is translated to the workbench 75 by the vacuum suction cup 10. An infrared diffuse reflection laser sensor a is provided here. After the infrared diffuse reflection laser sensor a determines that the veneer is in place, it sends a signal to the TPC control system. Then, the TPC control system issues an instruction to the pushing cylinder 7, and the feeding push rod 9 pushes the veneer to the dispensing station. An infrared diffuse reflection laser sensor b is provided at the dispensing station. After the infrared diffuse reflection laser sensor b determines that the veneer reaches the specified position, it sends a signal to the TPC control system. Then, the TPC issues an instruction to the dispenser 28, and the dispensing valve 30 dispenses glue at the veneer glue application position 60 in the material 73. After the dispensing is completed, the TPC control system issues an instruction to the drive servo motor 16, and the straight ear push plate 14 installed on the conveyor chain 94 pushes the veneer to the forming station of the workbench 75. An infrared diffuse reflection laser sensor c is provided at the forming station of the workbench 75. After the infrared diffuse reflection laser sensor c determines that the veneer reaches the specified position, it sends a signal to the TPC control system. Then, the TPC control system issues an action instruction to the multi-position cylinder 18, making it act on the guide post connection fixing plate 58 and pressing down to make the inner mold 85 fall on the veneer to complete the pressing and positioning of the inner mold 85 on the veneer. After the positioning is completed, the TPC control system issues an instruction to the bow outer film up-folding drive cylinder 34. The other two bow outer film up-folding drive cylinders 34 act in the same direction at the same time to push the bow up-folding push plate 44 upward, so that the veneer is folded upward at the same time and closely combines with the bow of the inner mold 85. After the combination is completed, the TPC control system issues an instruction to the side outer film up-folding drive cylinder 33, making it push upward, and the movable end of the side outer film up-folding drive cylinder 33 pushes the guide post bushing mounting plate 38. Then, the side push rod 41 installed on the guide post bushing mounting plate 38 pushes the side push roller 45 to lift the outer mold side up-folding plate 2 upward at the same time, so that the side veneer up-folding position 63 of the material is folded upward at the same time and closely combines with the left and right sides of the inner mold 85. This action is completed by the push rod in the mechanism of the outer mold drive device 20.

[0063] After this action is completed, the TPC control system then issues instructions to the manipulator forming cylinder 1 and the manipulator forming cylinder 3 successively, driving the manipulator rubber coating roller 88 to move the upper folding positions 63 of the gunwale veneer of the veneer to the left and right respectively, thereby completing the tight fitting of the left and right gunwales of the veneer with the left and right gunwales of the inner mold 85. After these actions are completed, the TPC control system issues instructions to the two fixture driving cylinders 54 to make them act, and in a lever manner, drives the fixture 52 to clamp the bow veneer, thereby initially completing the forming process of the boat-shaped lunch box. When the fixture 52 completes the action and holds, the TPC control system then releases all the holding actions of the manipulator forming cylinder 1, the manipulator forming cylinder 3, the gunwale outer mold upper folding driving cylinder 33, the bow outer mold upper folding driving cylinder 34, and the multi-position cylinder 18. At the same time, under the action of the mold return compression spring 59, the inner mold 85 together with the formed lunch box as a whole returns to the initial state of the inner mold forming assembly 19. At the same time, the TPC control system issues instructions to the turntable driving motor 22 of the rotary circulating turntable 80, causing the rotary turntable 55 to rotate by the angle or number of pulses evenly divided by the installation quantity of the inner mold forming assembly 19 and then stop, thereby enabling the next inner mold to enter the working state.

[0064] In the technological process, it is divided into feeding, material conveying, dispensing, forming, and finished product. In terms of the components used, except for using four servo motors, the rest of the power sources adopt air source output. The electrical components and heating elements used all adopt 24v safety voltage, making this equipment have the advantages of small floor space, compact structure, and convenient maintenance. Especially the equipped TPC control system is easy to operate without programming, and all control programs from feeding to finished product are completed by one machine. Therefore, this equipment is an automatic mechanical equipment for manufacturing disposable edible lunch boxes with natural veneer as the raw material.

[0065] The material 73 used by this equipment to make lunch boxes is veneer, but it is not limited to veneer. This equipment can also use materials of other materials to produce lunch boxes.

[0066] The shape of the lunch box made by this equipment is boat-shaped but not limited to boat-shaped. The shape of the inner mold 85 of the inner mold forming assembly 19 can be changed according to needs; the arrangement of the pushing cylinder and the push rod of the outer mold driving device 20; the shape of the outer mold folding plate 86 and the manipulator of the outer mold forming mechanism 79, and the notch cutting position of the material 73, etc.

[0067] It will be understood that the present invention is described by way of some embodiments, and those skilled in the art will appreciate that various changes or equivalent substitutions can be made to these features and embodiments without departing from the spirit and scope of the present invention. Additionally, under the teachings of the present invention, these features and embodiments can be modified to adapt to specific circumstances and materials without departing from the spirit and scope of the present invention. Therefore, the present invention is not limited by the specific embodiments disclosed herein, and all embodiments falling within the scope of the claims of this application belong to the scope protected by the present invention.

Claims

1. A mechanical device for producing environmentally friendly lunch boxes from pure natural wood veneer raw materials, characterized in that: It includes a mechanical frame (74); a workbench (75) arranged on the mechanical frame (74); a bin lifting device (76) placed on one side of the workbench (75) for providing materials (73); a feeding device (77) installed on the workbench (75) to transport the materials (73) from the bin lifting device (76) to the workbench (75); a dispensing device (78) erected above the workbench (75) for dispensing the materials (73) on the workbench (75); an outer mold forming mechanism (79) and an outer mold driving device (20) installed on the workbench (75) for material forming; a rotating circulating turntable (80) for curing the formed product; an inner mold forming assembly (19) installed on the rotating circulating turntable (80) and a finished product conveying device (81) for conveying the formed product. The inner mold forming assembly (19) includes a connecting component, a multi-position cylinder (18), a bracket seat (31), two clamps (52), two clamp driving cylinders (54), an inner mold (85) and a clamp return spring (57). The inner mold (85) is vertically movably installed on the rotating turntable (55) of the rotating circulating turntable (80) through the connecting component. The two clamps (52) are clamped at both ends of the inner mold (85). The two clamps (52) are hinged to the pin connection fixing plate (51). A clamp return spring (57) is connected between the upper ends of the two clamps (52). The rotation of the two clamps (52) is driven by the clamp driving cylinders (54). The two clamp driving cylinders (54) are installed on the connecting component. Heating rod mounting holes (50) are provided on both the inner mold (85) and the two clamps (52). A thermal resistance temperature sensor mounting hole (49) is provided on the inner mold (85). The multi-position cylinder (18) pushes the inner mold (85) to move up and down through the connecting component. The multi-position cylinder (18) is installed on the mechanical frame (74) through the bracket seat (31). The outer mold forming mechanism (79) includes a manipulator forming cylinder one (1), a manipulator forming cylinder two (3), a manipulator cylinder mounting plate (15) and an outer mold folding plate (86). The manipulator forming cylinder one (1) and the manipulator forming cylinder two (3) are oppositely arranged on both sides of the outer mold folding plate (86). The manipulator forming cylinder two (3) is fixedly installed on the feeding guide rail (11) on the workbench (75) with a gap through the manipulator cylinder mounting plate (15), facilitating the transportation of the materials (73) from the gap between the manipulator forming cylinder two (3) and the workbench (75) to the outer mold folding plate (86). The movable ends of the manipulator forming cylinder one (1) and the manipulator forming cylinder two (3) both push the outer mold folding plate (86) to bend the materials (73) into shape.

2. The mechanical equipment for producing environment-friendly lunch boxes with natural wood veneer as raw materials according to claim 1, characterized in that: The silo lifting device (76) includes a silo loading slide (5) and a silo lifting limit sensor (64); the materials (73) are stacked in sequence on the silo lifting drive platform (47) of the silo loading slide (5), and the silo lifting limit sensor (64) is installed at the upper end of the silo loading slide (5) for sensing the position of the uppermost material (73); the silo loading slide (5) includes a silo lifting linear slide (82), a silo lifting drive platform (47) and four silo material positioning lifting guide rails (65), the silo lifting linear slide (82) is driven by a silo servo motor (4), the silo lifting drive platform (47) is fixed on the slider of the silo lifting linear slide (82), and the four silo material positioning lifting guide rails (65) are fixed at the four corners of the silo lifting drive platform (47).

3. The mechanical equipment for producing environment-friendly lunch boxes with natural wood veneer as raw materials according to claim 1, characterized in that: The feeding device (77) includes a first pressing cylinder (8) and at least one first vacuum suction cup (10); the movable end of the first pressing cylinder (8) is connected to a manipulator vacuum suction cup connecting plate (83), and at least one first vacuum suction cup (10) is installed on the manipulator vacuum suction cup connecting plate (83).

4. The mechanical equipment for producing environment-friendly lunch boxes with natural wood veneer as raw materials according to claim 1, characterized in that: The dispensing device (78) includes a dispensing valve bracket (17), a dispenser (28), a dispensing cylinder (29) and a dispensing rack (84); the dispensing valve (30) of the dispenser (28) is installed on the movable end of the dispensing cylinder (29) through the dispensing valve bracket (17), and the fixed end of the dispensing cylinder (29) is arranged above the dispensing station of the workbench (75) through the dispensing rack (84).

5. The mechanical equipment for producing environment-friendly lunch boxes with natural wood veneer as raw material according to claim 1, characterized in that: The outer mold driving device (20) includes a plurality of pushing cylinders and a plurality of push rods; the fixed ends of the plurality of pushing cylinders are all installed on the workbench (75), a push rod is installed on the movable end of each pushing cylinder, the plurality of push rods are arranged around the material (73) and abut against the bottom surface of the outer mold folding plate (86) of the outer mold forming mechanism (79), and the plurality of push rods push the outer mold folding plate (86) upward to further push the material (73) into shape.

6. The mechanical equipment for producing environment-friendly lunch boxes with natural wood veneer as raw material according to claim 1, characterized in that: The rotary circulating turntable (80) includes a turntable fixed shaft (21), a turntable driving motor (22), a solenoid valve (23), a pneumatic and electrical integrated slip ring (24), a rotary turntable (55) and a turntable fixed seat (26); the rotary turntable (55) is rotatably installed on the turntable fixed seat (26) through the turntable fixed shaft (21), the turntable driving motor (22) drives the rotary turntable (55) to rotate through a transmission mechanism, an inner mold forming assembly (19) is installed on the rotary turntable (55), the pneumatic and electrical integrated slip ring (24) is installed at the center of the upper surface of the rotary turntable (55), and the solenoid valve (23) is used to control the clamp driving cylinder (54) and is installed on the rotary turntable (55).

7. The mechanical equipment for producing environmentally friendly lunch boxes with natural wood veneer as raw materials according to claim 1, characterized in that: The finished product conveying device (81) includes a synchronous belt (70), a counting sensor (71), a synchronous belt guide baffle (72), a conveying frame body (92), at least one second vacuum suction cup (69), and at least one finished product collecting cylinder (68); at least one second vacuum suction cup (69) is installed at the front end of the conveying frame body (92) for removing the lunch box from the inner mold (85) and placing it on the synchronous belt (70), and each second vacuum suction cup (69) is installed on the corresponding finished product collecting cylinder (68) for adjusting the height of the second vacuum suction cup (69). The synchronous belt (70) is laid on the conveying frame body (92), and a synchronous belt guide baffle (72) is arranged on the conveying frame body (92) along the conveying direction of the synchronous belt (70). The counting sensor (71) is installed on the conveying frame body (92) for recording the number of finished products conveyed on the synchronous belt (70).

8. The mechanical equipment for producing environmentally friendly lunch boxes with natural wood veneer as raw material according to claim 1, characterized in that: The workbench (75) includes a table top panel (93), two feeding push rods (9), two feeding guide rails (11), and two straight ear push plates (14); feeding guide rails (11) are arranged on both sides of the table top panel (93) along its length direction. Two material pushing guide grooves (12) are formed on the table top panel (93) along its length direction, and the starting ends of the two material pushing guide grooves (12) are located at the material bin lifting device (76) and end at the dispensing device (78). The two feeding push rods (9) are respectively inserted into the corresponding material pushing guide grooves (12) and installed on the pushing cylinder (7). The two feeding push rods (9) push the material (73) to move along the material pushing guide groove (12) from the material bin lifting device (76) to the dispensing device (78). A transmission chain (94) is installed on the bottom surface of the table top panel (93) below the dispensing device (78), and two transmission chain guide grooves (13) are formed on the table top panel (93). Two straight ear push plates (14) provided on the transmission chain (94) pass through the transmission chain guide grooves (13) to push the material (73) and convey the material (73) to the forming station of the workbench (75).

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