Hot-pressing edge sealing device of buffer inflatable bag

Abstract

The utility model discloses a hot-pressing edge sealing device for a buffer inflatable bag. The hot-pressing edge sealing device comprises a mounting frame, a hot-pressing box and a material passing gap, the hot-pressing box is of a strip box structure with an upper opening and is fixed to the mounting frame, a strip-shaped channel is formed in the bottom of the hot-pressing box to form a material passing gap, a plurality of heating blocks of a metal block structure are arranged on the side, provided with the material passing gap, of the hot-pressing box, and heating rods are arranged in all the heating blocks. The hot pressing box is provided with fixing blocks corresponding to the heating blocks in number on the other side of the material passing gap, the fixing blocks are connected with a pressing block through a shifting rod mechanism, the length and the thickness of the pressing block are consistent with those of the heating blocks, two sets of sliding rods are fixed to the two ends of the pressing block, and the sliding rods are arranged in the fixing blocks close to the sliding rods in a sliding fit mode. A push-pull rod parallel to the sliding rod is fixed in the pressing block, all the push-pull rods are connected to a connecting strip of a strip plate structure, and a reed is arranged between the pressing block and the fixing block. The method has the advantages that sealing and welding are more thorough; the thermal pressure is constant and controllable; the edge sealing thickness can be adjusted.

Description

Technical Field

[0001] The utility model belongs to the technical field of inflatable bag edge sealing, and particularly relates to a hot pressing edge sealing device for a buffer inflatable bag. Background Art

[0002] In the field of industrial packaging, in order to ensure stable positioning and buffering effects during transportation to protect goods from being damaged by external collisions during transportation, buffer inflatable bags have been widely used as an effective buffer protection tool.

[0003] After being inflated, buffer inflatable bags need to be sealed. In the prior art, hot pressing is usually used for sealing. For example, a hot pressing edge sealing device for a buffer inflatable bag with a publication number of CN208664498U includes a main body of the edge sealing device. The main body of the edge sealing device includes a frame, an inflation mechanism, and an edge sealing mechanism. The inflation mechanism includes a guide rod rotatably connected to the frame, an inflation pipe fixed to the frame, and a blower. The inflation pipe is provided with a plurality of air outlets and an air inlet. The air inlet is connected to the air outlet end of the blower. The edge sealing mechanism includes two parallel transmission wheels, a conveyor belt sleeved on the two transmission wheels, a fixed table arranged between the two transmission wheels, a flattening roller and a hot pressing roller arranged above the fixed table and cooperating with the fixed table. One end of the inflation pipe close to the flattening roller is arranged above the conveyor belt, and there is a gap between the bottom of the inflation pipe and the outer side surface of the conveyor belt.

[0004] The above-mentioned comparative document uses the gap between the flattening roller and the hot pressing roller to seal the buffer inflatable bag. During sealing, only when the inflatable bag passes through the gap between the flattening roller and the hot pressing roller for a moment, the flattening roller and the hot pressing roller will contact the seal of the inflatable bag. Therefore, the rolling pressure time of the flattening roller and the hot pressing roller is too short, which is likely to cause insufficient hot pressing time between the seals of the inflatable bag, resulting in insufficient sealing fusion and an increase in the air leakage rate of the finished inflatable bag. Content of the Utility Model

[0005] The purpose of the utility model is to provide a hot pressing edge sealing device for a buffer inflatable bag to solve the technical problem of insufficient sealing fusion in the above-mentioned background art, resulting in an increase in the air leakage rate of the finished inflatable bag.

[0006] The above technical purpose of the utility model is achieved through the following technical solutions:

[0007] A hot-pressing edge-sealing device for a buffer inflatable bag, comprising: a mounting frame, a hot-pressing box, and a material-passing gap; the hot-pressing box is a strip box structure with an upper opening, which is fixed on the mounting frame. A strip-shaped channel is provided at the bottom of the hot-pressing box to form a material-passing gap. On one side of the material-passing gap of the hot-pressing box, there are several heating blocks in the structure of metal blocks, and heating rods are built in all the heating blocks. On the other side of the material-passing gap of the hot-pressing box, there are fixing blocks corresponding to the number of heating blocks. A pressing block is connected to the fixing block through a lever mechanism. The length and thickness of the pressing block are the same as the length and thickness of the heating block. Two groups of sliding rods are fixed at both ends of the pressing block, and the sliding rods are slidably fitted in the adjacent fixing blocks. A push-pull rod parallel to the sliding rods is fixed in the pressing block. All the push-pull rods penetrate through the adjacent fixing blocks and are connected to a connecting strip in the structure of a strip board. A reed with elastic elongation ability is embedded outside the push-pull rod between the pressing block and the fixing block. Driving mechanisms for driving the bag to be sealed to travel are provided on both sides of the material-passing gap of the hot-pressing box.

[0008] Further: In order to uniformly control the movement of all the pressing blocks, a horizontal rod-shaped lever is rotatably fitted on the hot-pressing box. A vertical rotating shaft is fixed at the end of the lever. A roller-shaped rotating roller is rotatably fitted on the rotating shaft, and the rotating roller is tangent to and in contact with the vertical surface of the connecting strip close to the pressing block.

[0009] Further: The driving mechanism includes: a feeding wheel, a discharging wheel, a driving motor, a driving wheel, a double-layer sprocket group, and a driven sprocket; both the feeding wheel and the discharging wheel are composed of two groups of rollers. The two groups of rollers are symmetrically arranged on both sides of the material-passing gap. Among them, the feeding wheel is arranged on the feeding side of the material-passing gap (the feeding side is the side where the bag to be sealed enters), and the discharging wheel is arranged on the discharging side of the material-passing gap. A driving motor is installed on the hot-pressing box by a motor bracket. A driving wheel is fixed on the output shaft of the driving motor. A double-layer sprocket group is coaxially fixed below one of the rollers of the discharging wheel, and a driven sprocket is coaxially fixed below one of the rollers of the feeding wheel. The driving wheel is meshed with the sprockets of the same layer of the double-layer sprocket group through a chain, and the other layer of sprocket of the double-layer sprocket group and the driven sprocket are meshed through a chain.

[0010] Further: In order to limit the gap between the pressing block and the heating block and prevent the edge-sealing thickness of the pressing block and the heating block from being too thin, a thickness-adjusting mechanism is provided on the hot-pressing box. The main body of the thickness-adjusting mechanism is an adjusting rod in the structure of a rod shape, and the adjusting rod is vertically fixed at the bottom of the hot-pressing box; a limiting column is fixed on the adjusting rod, and the limiting column is arranged on the side of the material-passing gap close to the pressing block.

[0011] Further: In order to adjust the gap between the pressing block and the heating block and further adjust the edge-sealing thickness of the pressing block and the heating block, the adjusting rod penetrates through the bottom of the hot-pressing box. The hole position where the adjusting rod penetrates through the hot-pressing box is a first chute in the shape of a slot opening, and the first chute is parallel to the axis line of the sliding rod. The part of the adjusting rod that penetrates to the lower part of the hot-pressing box is threadedly fitted with a fixed bolt cap.

[0012] Further: In order to accurately adjust the edge sealing thickness of the briquette and the heating block, scale lines for indicating the edge sealing thickness are provided beside the first sliding groove, and a gasket is externally fitted on the adjusting rod between the fixed bolt cap and the hot pressing box. A pointer for indicating the scale line is provided on the gasket.

[0013] Further: In order to prevent the pointer from deviating from the scale line and losing the indication accuracy, a set of second sliding grooves parallel to the axis line of the sliding rod are provided on both sides of the second sliding groove. The gasket is provided with sliding teeth having the same width as the second sliding groove. The sliding teeth are embedded in the second sliding groove and are in sliding fit with the second sliding groove.

[0014] Further: In order to uniformly adjust the temperatures of all the heating blocks, the heating rods built in the heating blocks are the same heating rod.

[0015] In summary, the present utility model has the following beneficial effects:

[0016] ① The hot pressing time is controllable, the sealing and welding are more thorough, and the air leakage rate of the finished inflatable bag is reduced: By setting up the briquette and the heating block, under the elastic elongation pressure of the reed piece, the reed piece pushes open the gap between the briquette and the fixed block. Since the fixed block is fixedly installed, the reed piece will drive the briquette to move towards the heating block side. Then, the moving briquette presses the bag to be sealed against the corresponding heating block, and the heating block welds the bag to be sealed in contact with it together to complete the sealing. This time can be adjusted according to the actual situation, which can ensure that the hot pressing time complies with the regulations, making the sealing and welding of the inflatable bag more thorough and greatly reducing the air leakage rate of the finished inflatable bag.

[0017] ② Each time during hot pressing (without adjusting the parameters), the hot pressing force is constant and controllable: Since the pressing force during sealing is provided by the reed piece, the pressure between the briquette and the fixed block during sealing is constant and controllable.

[0018] ③ The edge sealing thickness can be adjusted: By setting up the thickness adjusting mechanism, when the edge sealing thickness needs to be adjusted, loosen the fixed bolt cap and adjust the positions of the adjusting rod, the limit post, and the gasket in the sliding groove. At this time, through the scale indicated by the pointer on the scale line, the precise position adjustment of the limit post is realized, so that when it contacts the connecting strip, the distance between the briquette and the heating block is the same as the edge sealing thickness to be adjusted. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 is the overall structural schematic diagram of the present utility model;

[0020] Figure 2 is the top view structural schematic diagram of the present utility model;

[0021] Figure 3 is the bottom view structural schematic diagram of the present utility model;

[0022] Figure 4 is a schematic structural view of the lever mechanism of the present utility model;

[0023] Figure 5 is Figure 2 an enlarged view of the structure at position A in

[0024] Figure 6 is Figure 2 an enlarged view of the structure at position B in

[0025] Figure 7 is Figure 3 an enlarged view of the structure at position C in

[0026] Figure 8 is Figure 4 an enlarged view of the structure at position D in

[0027] Figure 9 is a schematic use structure view of the present utility model;

[0028] In the figure, 1, mounting frame; 2, hot pressing box; 3, material passing gap; 4, driving mechanism; 5, pressing block; 6, heating block; 7, fixing block; 8, lever mechanism; 9, thickness adjusting mechanism; 10, heating rod; 11, bag to be sealed; 41, feeding wheel; 42, discharging wheel; 43, driving motor; 44, driving wheel; 45, double-layer sprocket set; 46, driven sprocket; 81, sliding rod; 82, push-pull rod; 83, connecting bar; 84, reed; 85, lever; 86, rotating shaft; 87, rotating roller; 88, steering gear; 91, adjusting rod; 92, limiting column; 93, first chute; 94, fixing bolt cap; 95, gasket; 96, pointer; 97, scale line; 98, second chute. Specific embodiments

[0029] The present utility model will be further described in detail below with reference to the accompanying drawings.

[0030] Embodiment:

[0031] Please refer to Figures 1-9 , the present utility model provides a technical solution:

[0032] A hot pressing edge sealing device for a buffer inflatable bag, comprising: a mounting frame 1, a hot pressing box 2, and a material passing gap 3; the hot pressing box 2 is a strip box structure with an upper opening, which is fixed on the mounting frame 1. A strip-shaped channel is provided at the bottom of the hot pressing box 2 to form the material passing gap 3. On one side of the material passing gap 3 of the hot pressing box 2, a plurality of heating blocks 6 in the structure of metal blocks are provided. All the heating blocks 6 are internally provided with heating rods 10. On the other side of the material passing gap 3 of the hot pressing box 2, fixing blocks 7 corresponding to the number of the heating blocks 6 are provided. A pressing block 5 is connected to the fixing block 7 through a lever mechanism 8. The length and thickness of the pressing block 5 are the same as the length and thickness of the heating block 6. Two groups of sliding rods 81 are fixed at both ends of the pressing block 5. The sliding rods 81 are slidably fitted in the adjacent fixing blocks 7. A push-pull rod 82 parallel to the sliding rods 81 is fixed in the pressing block 5. All the push-pull rods 82 penetrate the adjacent fixing blocks 7 and are connected to a connecting strip 83 in the structure of a strip plate. A reed 84 with elastic elongation ability is provided between the pressing block 5 and the fixing block 7 and is externally fitted on the push-pull rod 82. Driving mechanisms 4 for driving the bag to be sealed to travel are provided on both sides of the material passing gap 3 of the hot pressing box 2.

[0033] In order to uniformly control the movement of all the pressing blocks 5, a horizontal rod-shaped lever 85 is rotatably fitted on the hot pressing box 2. A vertical rotating shaft 86 is fixed at the end of the lever 85. A roller-shaped rotating roller 87 is rotatably fitted on the rotating shaft 86. The rotating roller 87 is tangent to and fits with the vertical surface of the connecting strip 83 close to the pressing block 5.

[0034] The driving mechanism 4 includes: a feeding wheel 41, a discharging wheel 42, a driving motor 43, a driving wheel 44, a double-layer sprocket group 45, and a driven sprocket 46; the feeding wheel 41 and the discharging wheel 42 are both composed of two groups of rollers. The two groups of rollers are symmetrically arranged on both sides of the material passing gap 3. Among them, the feeding wheel 41 is arranged on the feeding side of the material passing gap 3 (the feeding side is the side where the bag to be sealed enters), and the discharging wheel 42 is arranged on the discharging side of the material passing gap 3. The driving motor 43 is mounted on the hot pressing box 2 by a motor bracket. The output shaft of the driving motor 43 is fixed with the driving wheel 44. A double-layer sprocket group 45 is coaxially fixed below one of the rollers of the discharging wheel 42. A driven sprocket 46 is coaxially fixed below one of the rollers of the feeding wheel 41. The driving wheel 44 is meshed with the same-layer sprockets of the double-layer sprocket group 45 through a chain. The other layer of sprockets of the double-layer sprocket group 45 and the driven sprocket 46 are meshed through a chain.

[0035] In order to limit the gap between the pressing block 5 and the heating block 6 and prevent the edge sealing thickness of the pressing block 5 and the heating block 6 from being too thin, a thickness adjusting mechanism 9 is provided on the hot pressing box 2. The main body of the thickness adjusting mechanism 9 is an adjusting rod 91 in the structure of a rod. The adjusting rod 91 is vertically fixed at the bottom of the hot pressing box 2; a limiting column 92 is fixed on the adjusting rod 91. The limiting column 92 is arranged on the side of the material passing gap 3 close to the pressing block 5.

[0036] In order to adjust the gap between the briquetting block 5 and the heating block 6, and further adjust the edge-sealing thickness of the briquetting block 5 and the heating block 6, the adjusting rod 91 penetrates the bottom of the hot pressing box 2. The hole position where the adjusting rod 91 penetrates the hot pressing box 2 is a first sliding groove 93 in the shape of a notch. The first sliding groove 93 is parallel to the axis line of the sliding rod 81. A fixing bolt cap 94 is screwed on the part of the adjusting rod 91 that penetrates below the hot pressing box 2.

[0037] In order to accurately adjust the edge-sealing thickness of the briquetting block 5 and the heating block 6, scale lines 97 for indicating the edge-sealing thickness are provided beside the first sliding groove 93. A gasket 95 is externally fitted on the adjusting rod 91 between the fixing bolt cap 94 and the hot pressing box 2. A pointer 96 for indicating the scale lines 97 is provided on the gasket 95.

[0038] In order to prevent the pointer 96 from deviating from the scale lines 97 and losing the indication accuracy, a set of second sliding grooves 98 parallel to the axis line of the sliding rod 81 are provided on each side of the first sliding groove 93. The gasket 95 is provided with sliding teeth having the same width as the second sliding grooves 98. The sliding teeth are embedded in the second sliding grooves 98 and are in sliding fit with the second sliding grooves 98.

[0039] In order to uniformly adjust the temperatures of all the heating blocks 6, the heating rods 10 built in the heating blocks 6 are the same heating rod 10.

[0040] Brief description of the usage process:

[0041] During use, as Figure 9 shown, for the driving motor 43, the heating rod 10, and the servo 88, connect to a power source with a control switch. Turn on the power sources of the driving motor 43 and the heating rod 10. The heating rod 10 works to generate heat and transfers the heat to all the heating blocks 6. The driving motor 43 drives the double-layer sprocket set 45 and the coaxial discharging wheel 42 to rotate through the driving wheel 44. The double-layer sprocket set 45 drives the driven sprocket 46 and the coaxial feeding wheel 41 to rotate. Place the bag to be sealed 11 from the side of the feeding wheel 41 of the material passing gap 3. The rotating feeding wheel 41 transports the bag to be sealed 11 from the material passing gap 3 to between the briquetting block 5 and the heating block 6, and then stop the driving motor 43 from rotating.

[0042] Then disconnect the power supply of the servo 88. The servo 88 loses the deflecting power. Under the elastic elongation pressure of the reed 84, the reed 84 opens the gap between the briquetting block 5 and the fixed block 7. Since the fixed block 7 is fixedly installed, the reed 84 will drive the briquetting block 5 to move towards the heating block 6 side. Then the moving briquetting block 5 presses the bag to be sealed 11 against the corresponding heating block 6, and the heating block 6 fuses and seals the bag to be sealed 11 in contact with it, completing the sealing.

[0043] Since the pressing force during sealing is provided by the reed 84, the pressure between the pressing block 5 and the fixing block 7 during sealing is constant and controllable (this is also the reason for not directly driving the connecting bar 83 to move by a cylinder); when the sealing is completed, the control servo 88 drives the lever 85 to deflect, and the roller 87 at the end of the lever 85 follows the deflection. The roller 87 squeezes and pushes the connecting bar 83 downward. Then, the connecting bar 83 drives the pressing block 5 connected to the connecting bar 83 through the push-pull rod 82 to move. Further, the pressing block 5 moves in the direction away from the heating block 6, and then the pressing block 5 and the heating block 6 are separated.

[0044] After the pressing block 5 and the heating block 6 are separated, the driving motor 43 is restarted. The driving motor 43 drives the feeding wheel 41 and the discharging wheel 42 to rotate. The rotating feeding wheel 41 and discharging wheel 42 move the sealed bag 11 to the next process through the material passing gap 3, or discharge the sealed bag 11.

[0045] According to the above principle, the minimum distance between the pressing block 5 and the heating block 6 is the sealing thickness. Therefore, when the distance between the pressing block 5 and the heating block 6 is the same as the sealing thickness, the limit post 92 in the thickness adjusting mechanism 9 should limit the movement position of the connecting bar 83 on the side close to the pressing block 5 to prevent the connecting bar 83 and the pressing block 5 from continuing to move and resulting in the sealing thickness being less than the preset thickness. When the sealing thickness needs to be adjusted, loosen the fixing bolt cap 94 and adjust the positions of the adjusting rod 91, the limit post 92, and the gasket 95 in the first sliding groove 93. At this time, through the scale of the scale line 97 indicated by the pointer 96, the precise position adjustment of the limit post 92 is realized, so that when it contacts the connecting bar 83, the distance between the pressing block 5 and the heating block 6 is the same as the sealing thickness to be adjusted. After the adjustment is completed, lock the fixing bolt cap 94 again.

[0046] This specific embodiment is only an explanation of the present invention, and it is not a limitation of the present invention. Those skilled in the art can make modifications to this embodiment without creative contributions according to needs after reading this specification, but as long as it is within the scope of the claims of the present invention, it is protected by the patent law.

Claims

1. A hot pressing edge sealing device for a cushioning air bag, comprising: The invention relates to a mounting frame (1), a hot pressing box (2), and a material gap (3); the characteristics are as follows: the hot pressing box (2) is an upper opening strip box structure, which is fixed on the mounting frame (1); a strip-shaped channel is provided at the bottom of the hot pressing box (2) to form a material gap (3); the hot pressing box (2) is provided with a plurality of heating blocks (6) of a metal block structure on one side of the material gap (3); all heating blocks (6) are equipped with heating rods (10); the hot pressing box (2) is provided with a number of fixed blocks (7) corresponding to the number of heating blocks (6) on the other side of the material gap (3); a pressing block (5) is connected to the fixed block (7) via a lever mechanism (8); the length of the pressing block (5) is The length and thickness are consistent with those of the heating block (6), two sets of sliding rods (81) are fixed at both ends of the pressing block (5), the sliding rods (81) are slidably fitted in the adjacent fixed blocks (7), a push-pull rod (82) parallel to the sliding rod (81) is fixed in the pressing block (5), all the push-pull rods (82) penetrate the adjacent fixed blocks (7) and are connected to a connecting strip (83) of a plate structure, a spring sheet (84) with elastic elongation ability is provided between the pressing block (5) and the fixed block (7) and is embedded on the push-pull rod (82), and a driving mechanism (4) for driving the bags to be sealed to move forward is provided on both sides of the material gap (3) of the hot pressing box (2).

2. The hot pressing edge sealing device for a cushioning airbag according to claim 1, characterized in that: The hot press box (2) is rotatably fitted with a lever (85) having a horizontal rod-like structure, a vertical rotating shaft (86) is fixed to the end of the lever (85), a rotating roller (87) having a roller-like structure is rotatably fitted on the rotating shaft (86), and the rotating roller (87) and the connecting strip (83) are tangentially fitted to the vertical surface of the pressing block (5).

3. The hot pressing edge sealing device for a cushioning airbag according to claim 1, characterized in that: The driving mechanism (4) comprises: a feed wheel (41), a discharge wheel (42), a driving motor (43), a driving wheel (44), a double-layer sprocket group (45), and a driven sprocket (46); the feed wheel (41) and the discharge wheel (42) are both composed of two groups of rollers, and the two groups of rollers are symmetrically arranged on both sides of the material gap (3), wherein the feed wheel (41) is arranged on the feed side of the material gap (3), and the discharge wheel (42) is arranged on the discharge side of the material gap (3), and the hot pressing box (2) is provided with a plurality of rollers. A driving motor (43) is installed on a motor bracket, a driving wheel (44) is fixed to the output shaft of the driving motor (43), a double-layer sprocket group (45) is coaxially fixed below one group of rollers of the discharging wheel (42), a driven sprocket (46) is coaxially fixed below one group of rollers of the feeding wheel (41), the driving wheel (44) is meshed with a sprocket of the same layer of the double-layer sprocket group (45) through a chain, and another sprocket of the double-layer sprocket group (45) is meshed with the driven sprocket (46) through a chain.

4. The hot pressing edge sealing device for a cushioning airbag according to claim 1, characterized in that: The hot press box (2) is provided with a thickness adjustment mechanism (9), the main body of the thickness adjustment mechanism (9) is an adjustment rod (91) of a rod-shaped structure, the adjustment rod (91) is vertically fixed to the bottom of the hot press box (2); a limit column (92) is fixed to the adjustment rod (91), and the limit column (92) is arranged on a side of the material gap (3) close to the pressing block (5).

5. The hot pressing edge sealing device for a cushioning airbag according to claim 4, characterized in that: The adjusting rod (91) penetrates the bottom of the hot press box (2), and the hole position where the adjusting rod (91) penetrates the hot press box (2) is a first slot-shaped slide groove (93), and the first slide groove (93) is parallel to the axis of the slide rod (81). The adjusting rod (91) penetrates to the part below the hot press box (2), and a fixing bolt cap (94) is screwed on the thread.

6. The hot pressing edge sealing device for a cushioning airbag according to claim 5, characterized in that: A scale line (97) for indicating the thickness of the edge banding is provided on the side of the first slide groove (93), and a gasket (95) is embedded on the adjusting rod (91) between the fixing bolt cap (94) and the hot pressing box (2), and a pointer (96) for indicating the scale line (97) is provided on the gasket (95).

7. The hot pressing edge sealing device for a cushioning airbag according to claim 6, characterized in that: A group of second slide grooves (98) parallel to the axis of the slide rod (81) are respectively provided on both sides of the first slide groove (93), and a sliding tooth with the same width as the second slide groove (98) is provided on the gasket (95), and the sliding tooth is embedded in the second slide groove (98) and slidably matched with the second slide groove (98).

8. The hot pressing edge sealing device for a cushioning airbag according to claim 1, characterized in that: The heating rod (10) built into the heating block (6) is the same heating rod (10).

Images