A rapid heat sealing device for thick PE packaging bags

Abstract

The present invention discloses a rapid heat-sealing device for thick PE packaging bags, comprising a frame, a control cabinet is provided on one side of the frame, the other side of the frame is connected to a heat-sealing frame through a lifting mechanism, a power device is provided on one side of the heat-sealing frame, a heating device connected to the power device is provided on the other side of the heat-sealing frame, the power device comprises a reduction motor, a clamping conveying mechanism, a pressing roller mechanism and a heating base connected to the heating device, the reduction motor is connected to the upper side of a motor mounting plate, a driving shaft penetrating the motor mounting plate is connected to one side of the reduction motor, the lower end of the driving shaft is connected to the first main board through a bearing seat, and a driving gear, a clutch driving wheel, a pressing roller power wheel and a driving sprocket are installed on the driving shaft from top to bottom. The present invention adopts a rapid heat-sealing device for thick PE packaging bags using the above structure, which has a compact structure, small footprint, fast heat-sealing speed and high work efficiency.

Description

Technical Field

[0001] The invention relates to the technical field of packaging machinery and equipment, in particular to a rapid heat-sealing device for thick PE packaging bags. Background Art

[0002] As the quality requirements of the packaging market continue to increase, more material manufacturers are increasing their requirements for the material and appearance of packaging bags in order to improve the image of their products. Many manufacturers, such as pet feed and high-quality chemical raw materials, use relatively expensive thick PE bags (heavy film bags) to directly package materials. PE bags are usually sealed by heat sealing. However, the existing heat sealing machines for heavy film bags are slow and inefficient, and there is no fast and efficient equipment specifically for heat sealing heavy film bags. Summary of the invention

[0003] The invention aims to provide a rapid heat-sealing device for thick PE packaging bags, which has a compact structure, small footprint, fast heat-sealing speed and high working efficiency.

[0004] To achieve the above-mentioned object, the present invention provides a rapid heat-sealing device for thick PE packaging bags, comprising a frame, a control cabinet is provided on one side of the frame, the other side of the frame is connected to a heat-sealing frame through a lifting mechanism, a power device is provided on one side of the heat-sealing frame, and a heating device connected to the power device is provided on the other side of the heat-sealing frame;

[0005] The heat sealing frame comprises a first main board, a second main board, a first hanger and a second hanger, the first main board and the second main board are arranged parallel to each other, the first hanger is vertically connected to the left side of the first main board and the second main board, the second hanger is vertically connected to the right side of the first main board and the second main board, two parallel cross beams are connected between the first hanger and the second hanger, a gear mounting plate is arranged in the middle of the cross beam, a support column is arranged on one side of the first main board and the second main board close to the first hanger, and a motor mounting plate is connected to the upper side of the support column and the first hanger;

[0006] The power device comprises a reduction motor, a clamping and conveying mechanism, a pressure roller mechanism and a heating base connected to the heating device, wherein the reduction motor is connected to the upper side of the motor mounting plate, the clamping and conveying mechanism is connected to the upper sides of the first main board and the second main board, the pressure roller mechanism is arranged on the left side of the upper part of the clamping and conveying mechanism, the heating base is arranged on the right side of the upper part of the clamping and conveying mechanism, one side of the heating base is provided with a forward transmission mechanism connected to the reduction motor, and one side of the forward transmission mechanism is provided with a retracting mechanism connected to the heating base;

[0007] The lower side of the motor mounting plate is connected to four evenly distributed round pillars, one side of the reduction motor is connected to a driving shaft that passes through the motor mounting plate, the lower end of the driving shaft is connected to the first main board through a bearing seat, and a driving gear, a clutch driving wheel, a pressing roller power wheel and a driving sprocket are installed on the driving shaft from top to bottom;

[0008] The heating device includes a heating body, a first slide rail mounting seat and a first telescopic cylinder mounting seat, wherein two heating bodies are provided in parallel, and four first slide rail mounting seats are provided, and the four first slide rail mounting seats are evenly and symmetrically arranged on the front and rear sides of the heating body, and a first slide rail passing through the heating body is provided between the two oppositely arranged first slide rail mounting seats, and the first telescopic cylinder mounting seats are arranged on both sides of the middle part of the heating body, and a first telescopic cylinder connected to the heating body is provided on the first telescopic cylinder mounting seats.

[0009] Preferably, the clamping and conveying mechanism includes the driving sprocket, the driven gear, the driven sprocket, the driving chain and the driven chain. A parallel driven shaft is provided on one side of the driving shaft. The driven shaft is connected between the second main board and the motor mounting plate through a bearing and the bearing seat. The driven gear and the driven sprocket are respectively arranged on the upper and lower sides of the driven shaft. The driven gear is meshed with the driving gear, and the outer side of the driving sprocket is meshed with the driving chain, and the outer side of the driven sprocket is meshed with the driven chain.

[0010] Preferably, the right side of the heat sealing frame is connected to two parallel tensioning slides through a first spring and a guide rail, and a supporting sprocket and a tensioning sprocket are provided on the tensioning slide, and the driving chain and the driven chain are both engaged with the supporting sprocket and the tensioning sprocket.

[0011] Preferably, the pressing roller mechanism includes an active pressing roller seat and a driven pressing roller seat, the active pressing roller seat and the driven pressing roller seat are respectively connected to the first main board and the second main board through a supporting seat, an active pressing roller gear is provided on the upper side of the active pressing roller seat, a pressing roller sprocket is provided on the upper side of the active pressing roller gear, the pressing roller sprocket is connected to a pressing roller power wheel through a pressing roller chain, a first pressing roller is provided on the lower side of the active pressing roller seat, a driven pressing roller gear meshing with the active pressing roller gear is provided on the upper side of the driven pressing roller seat, a second pressing roller is provided on the lower side of the driven pressing roller seat, a tensioning plate is provided on one side of the driven pressing roller seat, and a second spring is connected to the tensioning plate on the side away from the driven pressing roller seat.

[0012] Preferably, the forward transmission mechanism includes an intermediate main shaft, a fixed shaft and a forward rack, the upper and lower ends of the intermediate main shaft are respectively connected to the lower side of the motor mounting plate and the upper side of the first main board through a clutch bearing seat, the intermediate main shaft is provided with a forward driving sprocket, a clutch sprocket and an electromagnetic clutch from top to bottom, the clutch sprocket and the electromagnetic clutch are connected as an integral structure, the fixed shaft is connected to the lower side of the gear mounting plate through a bearing mounting seat, the fixed shaft is provided with a forward driven sprocket and a forward gear meshing with the forward rack from top to bottom, the forward rack is fixedly mounted on the upper side of the heating base, the clutch sprocket is connected to the clutch driving wheel through a clutch driving chain, and the forward driving sprocket is connected to the forward driven sprocket through a forward driving chain.

[0013] Preferably, the retraction mechanism includes two parallel second slide rails and a second telescopic cylinder, the inner sides of the support column and the second hanger are provided with a second slide rail mounting seat connected to the second slide rail, the second slide rail is provided with a slider connected to the heating base, the two ends of the second telescopic cylinder are respectively connected to the lower ends of the motor mounting plate and the gear mounting plate through cylinder mounting seats, the end of the telescopic rod of the second telescopic cylinder is provided with a floating joint connected to the heating base, and the heating base is provided with a buffer collision block.

[0014] Preferably, the heating body includes a sliding base, a heating fixing plate, a heating substrate and a clamping base plate which are arranged in sequence from top to bottom, and both ends of the sliding base are respectively connected to connecting plates, and the lower ends of the two connecting plates are connected to the clamping base plate, one side of the clamping base plate is connected to the clamping plate through a connecting piece, a clamping rubber strip is installed on the clamping plate, a connecting groove is provided on the clamping base plate, and a connecting protrusion matching the connecting groove is provided on the heating fixing plate, the heating substrate is arranged between the heating fixing plate and the clamping base plate, a heating plate is provided on one side of the heating substrate, and a shock-absorbing rubber strip and a heat insulation strip are provided between the heating substrate and the heating plate.

[0015] Preferably, electrode guide rails are installed at both ends of the heating substrate, one side of the electrode guide rail is slidably connected to an electrode slider through a guide groove, the side of the electrode slider away from the electrode guide rail is connected to the heating electrode, a spring seat is provided on one side of the heating electrode, a slide spring is provided between the spring seat and the heating electrode, a heating plate pressing plate is provided on the inclined surface on the other side of the heating electrode, and the two heating plate pressing plates are respectively connected to the two ends of the heating plate.

[0016] Preferably, a high temperature resistant cloth base is provided on the outer side of the heating fixing plate, two groups of cloth winding shafts are provided on the high temperature resistant cloth base, one end of the cloth winding shaft passes through the high temperature resistant cloth base and is provided with a cloth winding shaft spring, the other end of the cloth winding shaft is connected to the oil-free bushing on the high temperature resistant base, a cloth winding shaft positioning sleeve is provided on the outer side of the oil-free bushing, a locking buckle connected to the two groups of cloth winding shafts is provided on the outer side of the cloth winding shaft positioning sleeve, Teflon heat-resistant cloth is wound around the cloth winding shaft, and the Teflon heat-resistant cloth is coated on the outer side of the heating plate.

[0017] Beneficial effects of the present invention:

[0018] (1) The overall structure is reasonable and reliable, compact and occupies a small area.

[0019] (2) The electromagnetic clutch cooperates with the forward gear and the forward rack to enable the heating device to move synchronously with the master and slave chains, that is, the heating device can move with the packaging bag, and the packaging bag can be quickly heat-sealed, thereby improving the efficiency of heat-sealing. The reset cylinder can drive the heating device to reset quickly, so that the next packaging bag can be quickly heat-sealed.

[0020] (3) The heating device integrating the clamping plate and the heating plate has a compact structure, reasonable and coordinated movements, and simplifies the structure of the overall equipment.

[0021] (4) The reduction motor is used as a main power source to drive the clamping and conveying mechanism, the pressure roller mechanism and the forward mechanism to work synchronously, thereby reducing costs.

[0022] The technical solution of the present invention is further described in detail below through the accompanying drawings and embodiments. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] Figure 1 It is a schematic diagram of an embodiment of a rapid heat-sealing device for thick PE packaging bags of the present invention;

[0024] Figure 2 It is a schematic diagram of a heat sealing frame of a rapid heat sealing device for thick PE packaging bags of the present invention;

[0025] Figure 3 It is a schematic diagram of a heating device for a rapid heat-sealing device for thick PE packaging bags of the present invention;

[0026] Figure 4 It is a schematic diagram of a power device for a rapid heat-sealing device for thick PE packaging bags of the present invention;

[0027] Figure 5 It is a schematic diagram of a forward mechanism of a rapid heat-sealing device for thick PE packaging bags of the present invention;

[0028] Figure 6 It is a schematic diagram of a single-side heating body of a heating device for a rapid heat-sealing device for thick PE packaging bags of the present invention;

[0029] Figure 7 It is an exploded view of a single-side heating body of a heating device for a rapid heat-sealing device for thick PE packaging bags of the present invention;

[0030] Figure 8 It is a schematic diagram of a Teflon heat-resistant cloth used for a rapid heat-sealing device for thick PE packaging bags of the present invention;

[0031] Fig. 9 This is a circuit schematic diagram of a rapid heat-sealing device for thick PE packaging bags of the present invention;

[0032] Fig.10 This is an electrical schematic diagram of a PLC module for a rapid heat-sealing device for thick PE packaging bags of the present invention;

[0033] Fig.11 The invention discloses a circuit schematic diagram of a control valve for a rapid heat-sealing device for thick PE packaging bags.

[0034] Reference numerals:

[0035] 1. Frame; 2. Control cabinet; 3. Lifting mechanism; 4. Heat sealing frame; 5. First main board; 6. Second main board; 7. First hanger; 8. Second hanger; 9. Crossbeam; 10. Gear mounting plate; 11. Support column; 12. Motor mounting plate; 13. Speed ​​reducer; 14. Heating base; 15. Round pillar; 16. Driving shaft; 17. Driving gear; 18. Clutch driving wheel; 19. Pressing roller power wheel; 20. Driving sprocket; 21. Heating body; 22. First slide rail mounting seat; 23. First telescopic cylinder mounting seat; 24. First Slide rail; 25, first telescopic cylinder; 26, driven gear; 27, driven sprocket; 28, driving chain; 29, driven chain; 30, driven shaft; 31, tensioning slide seat; 32, supporting sprocket; 33, tensioning sprocket; 34, active pressing roller seat; 35, driven pressing roller seat; 36, supporting seat; 37, active pressing roller gear; 38, pressing roller sprocket; 39, pressing roller chain; 40, first pressing roller; 41, driven pressing roller gear; 42, second pressing roller; 43, tensioning plate; 44, second spring; 45, intermediate spindle; 46. ​​Fixed shaft; 47. Forward rack; 48. Clutch bearing seat; 49. Forward drive sprocket; 50. Clutch sprocket; 51. Electromagnetic clutch; 52. Forward driven sprocket; 53. Forward gear; 54. Clutch drive chain; 55. Forward drive chain; 56. Second slide rail; 57. Second telescopic cylinder; 58. Second slide rail mounting seat; 59. Sliding block; 60. Cylinder mounting seat; 61. Floating joint; 62. Buffer block; 63. Sliding base; 64. Heating fixed plate; 65. Heating base plate; 66. Clamping base plate; 67. 7. Connecting plate; 68. Clamping plate; 69. Clamping rubber strip; 70. Guide sleeve; 71. Guide column; 72. Third spring; 73. Connecting groove; 74. Connecting protrusion; 75. Heating plate; 76. Shock-absorbing rubber strip; 77. Heat-insulating strip; 78. Electrode guide rail; 79. Electrode slider; 80. Heating electrode; 81. Spring seat; 82. Sliding seat spring; 83. Heating plate pressing plate; 84. High-temperature resistant cloth base; 85. Cloth winding shaft; 86. Cloth winding shaft spring; 87. Oil-free bushing; 88. Cloth winding shaft positioning sleeve; 89. Lock; 90. Teflon heat-resistant cloth. DETAILED DESCRIPTION

[0036] The technical solution of the present invention is further described below through the accompanying drawings and embodiments.

[0037] Unless otherwise defined, the technical terms or scientific terms used in the present invention should be understood by people with ordinary skills in the field to which the present invention belongs. The words "first", "second" and similar words used in the present invention do not indicate any order, quantity or importance, but are only used to distinguish different components. "Include" or "comprise" and similar words mean that the elements or objects appearing before the word include the elements or objects listed after the word and their equivalents, without excluding other elements or objects. "Connect" or "connected" and similar words are not limited to physical or mechanical connections, but may include electrical connections, whether direct or indirect. "Up", "down", "left", "right" and the like are only used to indicate relative positional relationships. When the absolute position of the described object changes, the relative positional relationship may also change accordingly.

[0038] Example

[0039] Figure 1 It is a schematic diagram of an embodiment of a rapid heat-sealing device for thick PE packaging bags of the present invention. As shown in the figure, the present invention provides a rapid heat-sealing device for thick PE packaging bags, including a frame 1, a control cabinet 2 is provided on one side of the frame 1, the other side of the frame 1 is connected to a heat-sealing frame 4 through a lifting mechanism 3, a power device is provided on one side of the heat-sealing frame 4, and a heating device connected to the power device is provided on the other side of the heat-sealing frame 4.

[0040] Figure 2 It is a schematic diagram of a heat sealing frame of a rapid heat sealing device for thick PE packaging bags of the present invention. As shown in the figure, the heat sealing frame 4 includes a first main board 5, a second main board 6, a first hanger 7 and a second hanger 8. The first main board 5 and the second main board 6 are arranged parallel to each other, the first hanger 7 is vertically connected to the left side of the first main board 5 and the second main board 6, and the second hanger 8 is vertically connected to the right side of the first main board 5 and the second main board 6. Two parallel beams 9 are connected between the first hanger 7 and the second hanger 8. A gear mounting plate 10 is provided in the middle of the beam 9. Support columns 11 are provided on one side of the first main board 5 and the second main board 6 close to the first hanger 7. A motor mounting plate 12 is connected to the upper side of the support column 11 and the first hanger 7, so that the heat sealing frame 4 has a simple and reliable structure and a firm support.

[0041] Figure 3 This is a schematic diagram of a heating device for rapid heat sealing equipment of thick PE packaging bags according to the present invention. Figure 4This is a schematic diagram of a power device for a rapid heat-sealing device for thick PE packaging bags of the present invention. As shown in the figure, the power device includes a reduction motor 13, a clamping and conveying mechanism, a roller mechanism and a heating base 14 connected to a heating device. The reduction motor 13 is connected to the upper side of the motor mounting plate 12, the clamping and conveying mechanism is connected to the upper side of the first main board 5 and the second main board 6, and the roller mechanism is arranged on the left side of the upper part of the clamping and conveying mechanism. The reduction motor 13 provides power for the whole. The clamping and conveying mechanism is used to stably convey the packaging bag after filling the material. The heating device heat-seals the packaging bag, and the roller mechanism further presses the heat-sealed part to ensure that the sealing of the packaging bag is tightly sealed. The heating base 14 is arranged on the right side of the upper part of the clamping and conveying mechanism. A forward transmission mechanism connected to the reduction motor 13 is arranged on one side of the heating base 14, and a retraction mechanism connected to the heating base 14 is arranged on one side of the forward transmission mechanism. The forward mechanism is used to drive the heating base 14 to move forward, that is, after the packaging bag is fed from the feeding port, the forward mechanism drives the heating device to move forward to heat-seal the packaging bag. After the heat sealing is completed, the retraction mechanism drives the heating device to quickly return to its original position.

[0042] Four evenly distributed round pillars 15 are connected to the lower side of the motor mounting plate 12 to improve the support strength of the motor mounting plate 12 and the stability of the overall structure. A driving shaft 16 that passes through the motor mounting plate 12 is connected to one side of the reduction motor 13. The lower end of the driving shaft 16 is connected to the first main board 5 through a bearing seat. A driving gear 17, a clutch driving wheel 18, a pressing roller power wheel 19 and a driving sprocket 20 are installed on the driving shaft 16 from top to bottom.

[0043] The clamping and conveying mechanism includes a driving sprocket 20, a driven gear 26, a driven sprocket 27, a driving chain 28 and a driven chain 29. A driven shaft 30 is provided on one side of the driving shaft 16 in parallel. The driven shaft 30 is connected between the second main board 6 and the motor mounting plate 12 through a bearing and a bearing seat. The driven gear 26 and the driven sprocket 27 are respectively arranged on the upper and lower sides of the driven shaft 30. The driven gear 26 is meshed with the driving gear 17. The outer side of the driving sprocket 20 is meshed with the driving chain 28, and the outer side of the driven sprocket 27 is meshed with the driven chain 29.

[0044] The right side of the heat sealing frame 4 is connected to two parallel tensioning slides 31 through the first spring and the guide rail, and the tensioning slide 31 is provided with a supporting sprocket 32 ​​and a tensioning sprocket 33, and the driving chain 28 and the driven chain 29 are both engaged with the supporting sprocket 32 ​​and the tensioning sprocket 33. That is, the tensioning slide 31 is installed on one side of the feed port, and the tensioning slide 31 can slide forward and backward through the first spring and the guide rail, so that the driving chain 28 and the driven chain 29 can be tightened.

[0045] Transmission principle of the clamping conveying mechanism: the reduction motor 13 drives the driving gear 17 and the driving sprocket 20 to rotate through the driving shaft 16, and the driven gear 26 meshing with the driving gear 17 rotates synchronously, and the driven gear 26 drives the driven sprocket 27 to rotate together through the driven shaft 30, thereby driving the driving chain 28 and the driven chain 29 to move synchronously from the inlet end to the outlet end.

[0046] The pressing roller mechanism includes an active pressing roller seat 34 and a driven pressing roller seat 35. The active pressing roller seat 34 and the driven pressing roller seat 35 are respectively connected to the first main board 5 and the second main board 6 through a support seat 36. An active pressing roller gear 37 is provided on the upper side of the active pressing roller seat 34. A pressing roller sprocket 38 is provided on the upper side of the active pressing roller gear 37. The pressing roller sprocket 38 is connected to the pressing roller power wheel 19 through a pressing roller chain 39. A first pressing roller 40 is provided on the lower side of the active pressing roller seat 34. A driven pressing roller gear 41 meshing with the active pressing roller gear 37 is provided on the upper side of the driven pressing roller seat 35. A second pressing roller 42 is provided on the lower side of the driven pressing roller seat 35. A tensioning plate 43 is provided on one side of the driven pressing roller seat 35. A second spring 44 is connected to the tensioning plate 43 away from the side of the driven pressing roller seat 35. The second spring 44 gives a thrust to the tensioning plate 43 , so that the tensioning plate 43 pushes the driven pressing roller seat 35 to approach the active pressing roller seat 34 , thereby making the active pressing roller gear 37 mesh with the driven pressing roller gear 41 .

[0047] Working principle of the pressing roller mechanism: the reduction motor 13 drives the pressing roller power wheel 19 to rotate through the driving shaft 16, the pressing roller power wheel 19 drives the pressing roller sprocket 38 to rotate through the pressing roller chain 39, the pressing roller sprocket 38 drives the active pressing roller gear 37 to rotate through the connecting shaft, and then drives the first pressing roller 40 to rotate through the connecting shaft. The driven pressing roller gear 41 meshing with the active pressing roller gear 37 moves synchronously, and the driven pressing roller gear 41 drives the second pressing roller 42 to rotate through the connecting shaft, so that the two pressing rollers can achieve synchronous reverse rotation.

[0048] Figure 5It is a schematic diagram of a forward mechanism of a rapid heat-sealing device for thick PE packaging bags of the present invention. As shown in the figure, the forward transmission mechanism includes an intermediate main shaft 45, a fixed shaft 46 and a forward rack 47. The upper and lower ends of the intermediate main shaft 45 are respectively connected to the lower side of the motor mounting plate 12 and the upper side of the first main board 5 through a clutch bearing seat 48. A forward driving sprocket 49, a clutch sprocket 50 and an electromagnetic clutch 51 are sequentially arranged on the intermediate main shaft 45 from top to bottom. The clutch sprocket 50 and the electromagnetic clutch 51 are connected as an integral structure. The fixed shaft 46 is connected to the lower side of the gear mounting plate 10 through a bearing mounting seat. A forward driven sprocket 52 and a forward gear 53 meshing with the forward rack 47 are sequentially arranged on the fixed shaft 46 from top to bottom. The forward rack 47 is fixedly installed on the upper side of the heating base 14. The clutch sprocket 50 is connected to the clutch driving wheel 18 through a clutch driving chain 54, and the forward driving sprocket 49 is connected to the forward driven sprocket 52 through a forward driving chain 55.

[0049] Working principle of the forward transmission mechanism: The power of the reduction motor 13 drives the clutch drive sprocket through the driving shaft 16, and the clutch drive sprocket drives the clutch sprocket 50 through the clutch drive chain 54. Since the clutch sprocket 50 and the electromagnetic clutch 51 are fixed together, the clutch power part also rotates clockwise. When the electromagnetic clutch 51 is not powered, the upper and lower parts are separated by the internal spring. Only when the electromagnetic clutch 51 is powered, the electromagnetic is generated to combine the upper and lower parts. The upper part of the electromagnetic clutch 51 is mounted on the intermediate main shaft 45 through a bearing sleeve, and the power transmission only idles around the intermediate main shaft 45, and the intermediate main shaft 45 does not rotate. The lower part of the electromagnetic clutch 51 is connected to the intermediate main shaft 45 through a flat key. Only when the lower part of the electromagnetic clutch 51 rotates, the intermediate main shaft 45 will rotate. When the electromagnetic clutch 51 is powered on, power is transmitted from the upper part to the lower part, thereby driving the intermediate main shaft 45 to rotate, and the forward drive gear makes the forward gear 53 rotate clockwise through the forward drive chain 55. Under the action of the forward gear 53, the forward rack 47 drives the heating base 14 to move forward. When the electromagnetic clutch 51 is powered off and loosened, the lower part loses power at this moment, and the heating base 14 stops.

[0050] The retracting mechanism includes two second slide rails 56 and a second telescopic cylinder 57 arranged in parallel. The inner sides of the support column 11 and the second hanger 8 are both provided with a second slide rail mounting seat 58 connected to the second slide rail 56. The second slide rail 56 is sleeved with a slider 59 connected to the heating base 14. The two ends of the second telescopic cylinder 57 are respectively connected to the lower ends of the motor mounting plate 12 and the gear mounting plate 10 through cylinder mounting seats 60. The end of the telescopic rod of the second telescopic cylinder 57 is provided with a floating joint 61 connected to the heating base 14, and the heating base 14 is provided with a buffer block 62. When the heating base 14 stops moving, the telescopic rod of the second telescopic cylinder 57 extends to drive the heating base 14 back to the position of the initial feed port, thereby forming a forward-reset cycle movement of the heating base 14. The slider 59 on the lower side of the heating base 14 slides on the second slide rail 56, which improves the stability of the reset movement of the heating base 14 and improves the safety of the overall structure operation.

[0051] Figure 6 This is a schematic diagram of a single-side heating body of a heating device for a rapid heat-sealing device for thick PE packaging bags of the present invention. Figure 7 This is an exploded view of a single-side heating body of a heating device for a rapid heat-sealing device for thick PE packaging bags of the present invention. Figure 8 It is a schematic diagram of a Teflon heat-resistant cloth used for a rapid heat-sealing device for thick PE packaging bags of the present invention. As shown in the figure, the heating device includes a heating body 21, a first slide rail mounting seat 22 and a first telescopic cylinder mounting seat 23. Two heating bodies 21 are provided in parallel, and four first slide rail mounting seats 22 are provided. The four first slide rail mounting seats 22 are evenly and symmetrically arranged on the front and rear sides of the heating body 21. A first slide rail 24 that penetrates the heating body 21 is provided between the two oppositely arranged first slide rail mounting seats 22. The first telescopic cylinder mounting seats 23 are arranged on both sides of the middle part of the heating body 21. The first telescopic cylinder mounting seats 23 are provided with a first telescopic cylinder 25 connected to the heating body 21.

[0052] The heating body 21 includes a sliding base 63, a heating fixing plate 64, a heating substrate 65 and a clamping base plate 66 which are arranged in sequence from top to bottom. The two ends of the sliding base 63 are respectively connected to connecting plates 67. The lower ends of the two connecting plates 67 are connected to the clamping base plate 66. One side of the clamping base plate 66 is connected to the clamping plate 68 through a connecting member. The connecting member includes a guide sleeve 70 connected to the clamping base plate 66. A guide column 71 connected to the clamping plate 68 is arranged in the guide sleeve 70. The guide column 71 is connected to the guide sleeve 70 through a third spring 72.

[0053] A clamping rubber strip 69 is installed on the clamping plate 68, a connecting groove 73 is provided on the clamping base plate 66, a connecting protrusion 74 matching the connecting groove 73 is provided on the heating fixing plate 64, a heating substrate 65 is arranged between the heating fixing plate 64 and the clamping base plate 66, a heating sheet 75 is provided on one side of the heating substrate 65, and a shock-absorbing rubber strip 76 and a heat-insulating strip 77 are provided between the heating substrate 65 and the heating sheet 75

[0054] Electrode rails 78 are installed at both ends of the heating substrate 65. An electrode slider 79 is slidably connected to one side of the electrode rail 78 through a guide groove. A heating electrode 80 is connected to the side of the electrode slider 79 away from the electrode rail 78. A spring seat 81 is provided on one side of the heating electrode 80. A slide spring 82 is provided between the spring seat 81 and the heating electrode 80. A heating plate pressing plate 83 is provided on the inclined surface on the other side of the heating electrode 80. The two heating plate pressing plates 83 are respectively connected to the two ends of the heating plate 75. The two ends of the heating plate 75 are pressed in the long groove of the heating electrode 80 and pressed by the heating plate pressing plate 83. Before pressing, the length of the heating plate 75 should be adjusted so that the slide spring 82 can exert a certain pressure on the heating electrode 80 to ensure that the heating plate 75 is always in a taut state.

[0055] A high temperature resistant cloth base 84 is provided on the outside of the heating fixed plate 64, and two sets of cloth winding shafts 85 are provided on the high temperature resistant cloth base 84. One end of the cloth winding shaft 85 penetrates the high temperature resistant cloth base 84 and is provided with a cloth winding shaft spring 86. The other end of the cloth winding shaft 85 is connected to the oil-free bushing 87 on the high temperature resistant base. A cloth winding shaft positioning sleeve 88 is provided on the outside of the oil-free bushing 87. A lock 89 connected to the two sets of cloth winding shafts 85 is provided on the outside of the cloth winding shaft positioning sleeve 88. Teflon heat-resistant cloth 90 is wound around the cloth winding shaft 85, and the Teflon heat-resistant cloth 90 is covered on the outside of the heating plate 75. The two ends of the Teflon heat-resistant cloth 90 are respectively wound on the two cloth winding shafts 85 in the up and down directions, and the tightness is adjusted, fixed by the cloth winding shaft positioning sleeve 88, and locked by the lock 89.

[0056] Working principle of the heating device: when not working, the telescopic rod of the first telescopic cylinder 25 is in a retracted state, pulling the two groups of heating bodies 21 apart. When working, the telescopic rod of the first telescopic cylinder 25 extends, pushing the two groups of heating bodies 21 closer to the middle. First, the clamping strips on both sides clamp the packaging bag to be heated. Under the pressure, the third spring 72 of the clamping rubber strip 69 is compressed, and the heating part continues to move forward until the telescopic rod of the first telescopic cylinder 25 is fully extended. At this time, the heating plates 75 on both sides are at the most reasonable distance from the heating body 21 of the packaging bag, heating the packaging bag, and then the first telescopic cylinder 25 moves to separate the two groups of heating plates 75 and the clamping rubber strip 69, loosening the packaging bag, so that the packaging bag continues to move forward.

[0057] Fig. 9 This is a circuit schematic diagram of a rapid heat-sealing device for thick PE packaging bags of the present invention. Fig.10This is the electrical schematic diagram of a PLC module for a rapid heat-sealing device for thick PE packaging bags of the present invention. Fig.11 This is a circuit schematic diagram of a control valve for a rapid heat-sealing device for thick PE packaging bags of the present invention. As shown in the figure, the specific implementation process of the present invention is as follows: when the packaging bag after filling the material enters the inlet end of the heat-sealing machine under the action of the clamping and conveying mechanism, it moves forward synchronously with the clamping and conveying mechanism under the clamping of the master and slave chains. When the sensing device (photoelectric switch) at the front end senses the packaging bag, it will provide a signal to the PLC. Under the instruction of the control program, the first telescopic cylinder of the heating device works, pushing the clamping plate to clamp the upper mouth of the packaging bag, and the heating plate starts to heat. At the same time, the electromagnetic clutch engages, driving the forward driving gear and the forward rack to make the heating component as a whole move forward synchronously with the master and slave chains. After the set working time, the heating component is turned on, the heating stops, the clamping plate is also disengaged, and at the same time, the electromagnetic clutch is separated, and the second telescopic cylinder works to push the heating device back to its original position, waiting for the next working cycle. The heat-sealed packaging bag continues to move forward under the action of the master and slave chains, and is further pressed at the roller mechanism to ensure that the packaging bag is well sealed until the outlet. The two cooling pipes at the outlet end blow air to cool the heating parts and then the packaging bag moves forward and out of the heat sealing machine to enter the next working link.

[0058] Finally, it should be noted that the above embodiments are only used to illustrate the technical solution of the present invention rather than to limit it. Although the present invention has been described in detail with reference to the preferred embodiments, those skilled in the art should understand that they can still modify or replace the technical solution of the present invention with equivalents, and these modifications or equivalent replacements cannot cause the modified technical solution to deviate from the spirit and scope of the technical solution of the present invention.

Claims

1. A rapid heat-sealing device for thick PE packaging bags, characterized by: It comprises a frame, a control cabinet is provided on one side of the frame, the other side of the frame is connected to a heat sealing frame through a lifting mechanism, a power device is provided on one side of the heat sealing frame, and a heating device connected to the power device is provided on the other side of the heat sealing frame; The heat sealing frame comprises a first main board, a second main board, a first hanger and a second hanger, the first main board and the second main board are arranged parallel to each other, the first hanger is vertically connected to the left side of the first main board and the second main board, the second hanger is vertically connected to the right side of the first main board and the second main board, two parallel cross beams are connected between the first hanger and the second hanger, a gear mounting plate is arranged in the middle of the cross beam, a support column is arranged on one side of the first main board and the second main board close to the first hanger, and a motor mounting plate is connected to the upper side of the support column and the first hanger; The power device comprises a reduction motor, a clamping and conveying mechanism, a pressure roller mechanism and a heating base connected to the heating device, wherein the reduction motor is connected to the upper side of the motor mounting plate, the clamping and conveying mechanism is connected to the upper sides of the first main board and the second main board, the pressure roller mechanism is arranged on the left side of the upper part of the clamping and conveying mechanism, the heating base is arranged on the right side of the upper part of the clamping and conveying mechanism, one side of the heating base is provided with a forward transmission mechanism connected to the reduction motor, and one side of the forward transmission mechanism is provided with a retracting mechanism connected to the heating base; The lower side of the motor mounting plate is connected to four evenly distributed round pillars, one side of the reduction motor is connected to a driving shaft that passes through the motor mounting plate, the lower end of the driving shaft is connected to the first main board through a bearing seat, and a driving gear, a clutch driving wheel, a pressing roller power wheel and a driving sprocket are installed on the driving shaft from top to bottom; The heating device includes a heating body, a first slide rail mounting seat and a first telescopic cylinder mounting seat, wherein two heating bodies are provided in parallel, and four first slide rail mounting seats are provided, and the four first slide rail mounting seats are evenly and symmetrically arranged on the front and rear sides of the heating body, and a first slide rail passing through the heating body is provided between the two oppositely arranged first slide rail mounting seats, and the first telescopic cylinder mounting seats are arranged on both sides of the middle part of the heating body, and a first telescopic cylinder connected to the heating body is provided on the first telescopic cylinder mounting seats.

2. The rapid heat-sealing device for thick PE packaging bags according to claim 1 is characterized in that: The clamping and conveying mechanism includes the driving sprocket, the driven gear, the driven sprocket, the driving chain and the driven chain. A parallel driven shaft is provided on one side of the driving shaft. The driven shaft is connected between the second main board and the motor mounting plate through a bearing and the bearing seat. The driven gear and the driven sprocket are respectively arranged on the upper and lower sides of the driven shaft. The driven gear is meshed with the driving gear, the outer side of the driving sprocket is meshed with the driving chain, and the outer side of the driven sprocket is meshed with the driven chain.

3. The rapid heat-sealing device for thick PE packaging bags according to claim 2 is characterized in that: The right side of the heat sealing frame is connected to two parallel tensioning slides through a first spring and a guide rail. A supporting sprocket and a tensioning sprocket are arranged on the tensioning slide. Both the driving chain and the driven chain are meshed with the supporting sprocket and the tensioning sprocket.

4. The rapid heat-sealing device for thick PE packaging bags according to claim 1 is characterized in that: The pressing roller mechanism includes an active pressing roller seat and a driven pressing roller seat, the active pressing roller seat and the driven pressing roller seat are respectively connected to the first main board and the second main board through a supporting seat, an active pressing roller gear is provided on the upper side of the active pressing roller seat, a pressing roller sprocket is provided on the upper side of the active pressing roller gear, the pressing roller sprocket is connected to the pressing roller power wheel through a pressing roller chain, a first pressing roller is provided on the lower side of the active pressing roller seat, a driven pressing roller gear meshing with the active pressing roller gear is provided on the upper side of the driven pressing roller seat, a second pressing roller is provided on the lower side of the driven pressing roller seat, a tensioning plate is provided on one side of the driven pressing roller seat, and a second spring is connected to the tensioning plate on the side away from the driven pressing roller seat.

5. The rapid heat-sealing device for thick PE packaging bags according to claim 1 is characterized in that: The forward transmission mechanism includes an intermediate main shaft, a fixed shaft and a forward rack, the upper and lower ends of the intermediate main shaft are respectively connected to the lower side of the motor mounting plate and the upper side of the first main board through a clutch bearing seat, the intermediate main shaft is provided with a forward drive sprocket, a clutch sprocket and an electromagnetic clutch from top to bottom, the clutch sprocket and the electromagnetic clutch are connected as an integral structure, the fixed shaft is connected to the lower side of the gear mounting plate through a bearing mounting seat, the fixed shaft is provided with a forward driven sprocket and a forward gear meshing with the forward rack from top to bottom, the forward rack is fixedly mounted on the upper side of the heating base, the clutch sprocket is connected to the clutch drive wheel through a clutch drive chain, and the forward drive sprocket is connected to the forward driven sprocket through a forward drive chain.

6. The rapid heat-sealing device for thick PE packaging bags according to claim 1, characterized in that: The retraction mechanism includes two second slide rails and a second telescopic cylinder arranged in parallel. The inner sides of the support column and the second hanger are provided with second slide rail mounting seats connected to the second slide rails. The second slide rail is provided with a slider connected to the heating base. The two ends of the second telescopic cylinder are respectively connected to the lower ends of the motor mounting plate and the gear mounting plate through cylinder mounting seats. The end of the telescopic rod of the second telescopic cylinder is provided with a floating joint connected to the heating base, and a buffer collision block is provided on the heating base.

7. The rapid heat-sealing device for thick PE packaging bags according to claim 1 is characterized in that: The heating body includes a sliding base, a heating fixing plate, a heating substrate and a clamping base plate which are arranged in sequence from top to bottom, and connecting plates are respectively connected to both ends of the sliding base, and the lower ends of the two connecting plates are connected to the clamping base plate, one side of the clamping base plate is connected to the clamping plate through a connecting piece, a clamping rubber strip is installed on the clamping plate, a connecting groove is provided on the clamping base plate, and a connecting protrusion matching the connecting groove is provided on the heating fixing plate, the heating substrate is arranged between the heating fixing plate and the clamping base plate, a heating plate is provided on one side of the heating substrate, and a shock-absorbing rubber strip and a heat insulation strip are provided between the heating substrate and the heating plate.

8. The rapid heat-sealing device for thick PE packaging bags according to claim 7, characterized in that: Electrode guide rails are installed at both ends of the heating substrate, one side of the electrode guide rail is slidably connected to an electrode slider through a guide groove, the side of the electrode slider away from the electrode guide rail is connected to a heating electrode, a spring seat is provided on one side of the heating electrode, a slide spring is provided between the spring seat and the heating electrode, a heating plate pressing plate is provided on the inclined surface on the other side of the heating electrode, and the two heating plate pressing plates are respectively connected to the two ends of the heating plate.

9. The rapid heat-sealing device for thick PE packaging bags according to claim 8, characterized in that: A high temperature resistant cloth base is provided on the outer side of the heating fixing plate, two groups of cloth winding shafts are provided on the high temperature resistant cloth base, one end of the cloth winding shaft passes through the high temperature resistant cloth base and is provided with a cloth winding shaft spring, the other end of the cloth winding shaft is connected to the oil-free bushing on the high temperature resistant cloth base, a cloth winding shaft positioning sleeve is provided on the outer side of the oil-free bushing, a locking buckle connected to the two groups of cloth winding shafts is provided on the outer side of the cloth winding shaft positioning sleeve, Teflon heat-resistant cloth is wound around the cloth winding shaft, and the Teflon heat-resistant cloth is coated on the outer side of the heating plate.

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