Film cutting device for shoe film machine

Abstract

The utility model relates to the technical field of shoe film machines, and provides a film cutting device for a shoe film machine, which comprises a film outlet, a film cutting opening, two hot cutting clamping blocks, an extension part and a guide block, the film outlet and the film cutting opening are both formed in the outer shell, the hot cutting clamping blocks can be oppositely clamped in the film cutting opening, the opposite ends of the two hot cutting clamping blocks are rotatably arranged on the outer shell, and an overturning driving structure is arranged in the outer shell; the extension part is arranged on the outer shell in an L shape, the film outlet is located above the extension part, and the film cutting opening is located behind the extension part; the guide block is located above the middle of the extension part and arranged on the outer shell, a guide extension distance is formed between the guide block and the extension part, and turning-up avoiding parts are formed between the left side and the right side of the guide block and the extension part.

Description

Technical Field

[0001] The utility model relates to the technical field of shoe film machines, and particularly relates to a film cutting device for a shoe film machine. Background Art

[0002] Traditional shoe film machines discharge the film in a straight line. After the heat shrinkable film is transported to the pedal area, it is flatly cut by a blade moving up and down. The foot steps on the pedal in the pedal area, and the pedal sinks to release the hot air outlet. The middle part of the heat shrinkable film sinks with the pedal and the periphery turns up. The periphery is wrapped around the bottom of the shoe under the blowing of hot air, as shown in the Chinese patent No. 200980124358.2, titled "Shoe Cover Machine and Method for Coating with a Shoe Cover Machine".

[0003] As Figure 1 shown, because the sinking height of the pedal in the traditional shoe film machine is small, the turning-up height of the periphery of the heat shrinkable film is also small, and the heat shrinkable film will also longitudinally contract under the action of hot air, further reducing the covering height of the heat shrinkable film. Therefore, the covering height of the heat shrinkable film sleeve formed after heat shrinking on the shoe surface is low or only the large sole of the shoe can be wrapped, making the heat shrinkable film sleeve easy to fall off during walking and pulling.

[0004] Therefore, in order to solve the problem that the heat shrinkable film shrinks downward under the blowing of hot air and reduces the covering height, this case proposes a film cutting device that can maximize the upward turning of the heat shrinkable film while cutting the heat shrinkable film. Summary of the Utility Model

[0005] Therefore, in view of the above problems, the utility model proposes a film cutting device for a shoe film machine.

[0006] To solve the above technical problems, the solution adopted by the utility model is: a film cutting device for a shoe film machine, including a film outlet, a film cutting port, two hot cutting clamp blocks, an extension part, and a guide block;

[0007] The film outlet and the film cutting port are both opened on the outer shell. The hot cutting clamp blocks can be arranged in a clamping manner in the film cutting port. The opposite ends of the two hot cutting clamp blocks are rotatably arranged on the outer shell, and a flipping driving structure is arranged inside the outer shell; the extension part is arranged on the outer shell in an L shape. The film outlet is located above the extension part, and the film cutting port is located behind the extension part; the guide block is arranged on the outer shell above the middle of the extension part. A guiding extension distance is formed between the guide block and the extension part, and a turning-up avoidance part is formed between the left and right sides of the guide block and the extension part.

[0008] A further improvement is that: a film pushing structure is arranged on the extension part to prevent the heat shrinkable film from accumulating in the guiding extension distance.

[0009] A further improvement is that the film pushing structure comprises at least one film pushing roller, the two ends of which are located at the guide extension interval and are rotatably arranged on the extension part, and the extension part is provided with a rotation driving structure for driving the film pushing roller to rotate.

[0010] A further improvement is that the film pushing structure comprises at least one film pushing wheel, the film pushing wheel is located at the guide extension interval and can be rotatably arranged on the extension part, and the extension part is provided with a rotation driving structure for driving the film pushing wheel to rotate.

[0011] Further improvements are: the number of the film pushing rollers is two or three or four or five, the rotation drive structure includes a plurality of track wheels, a plurality of tracks, and a first motor, the track wheels are fixedly sleeved on the rotating shafts on the left and right sides of the film pushing rollers, the track sleeves are alternately sleeved on the track wheels of two adjacent film pushing rollers, the outer shell of the first motor is fixedly set on the external shell, and the rotating shaft of the first motor is transmission connected to the film pushing roller.

[0012] Further improvements are: the number of the film pushing wheels is two or three or four or five, the rotation driving structure includes a plurality of track wheels, a plurality of tracks, and a third motor, the track wheels are fixedly sleeved on the rotating shafts on the left and right sides of the film pushing wheels, the track wheels are alternately sleeved on the track wheels of two adjacent film pushing wheels, the outer shell of the third motor is fixedly set on the shell, and the rotating shaft of the third motor is transmission connected to the rotating shaft of one of the film pushing wheels.

[0013] A further improvement is that the flipping drive structure includes two driving shafts, two second gears, and a second motor. The two driving shafts are fixedly inserted on the opposite ends of the two hot-cut clamps, and both ends of the driving shafts are rotatably set on the external shell. The two second gears are meshed with each other and set on the two shafts. The outer shell of the second motor is fixedly set on the external shell, and the rotating shaft of the second motor is fixedly connected to one of the driving shafts.

[0014] By adopting the above technical solution, the beneficial effects of the utility model are:

[0015] In this case, the left and right sides of the heat shrink film are driven to flip up and bond and clamp off by the hot cutting clamp, which simplifies the clamping structure and maximizes the upward flipping of the heat shrink film, thereby increasing the height of the heat shrink film covering the shoe body, increasing the wrapping area of ​​the heat shrink film sleeve, and preventing the heat shrink film sleeve from actively detaching from the shoe body; when removing the heat shrink film, it is only necessary to tear it to both sides along the hot clamping track to easily remove the heat shrink film sleeve. Under the action of the extension part and the guide block, the heat shrink film is discharged in an arc shape along the guide extension spacing first longitudinally and then transversely, so that when the free end of the heat shrink film is restricted by stepping on the shoe body, the two sides still have the deformation amount of flipping up to facilitate thermal clamping and forming a three-dimensional ship-shaped shape, and the guide block is only set in the middle of the extension part, and the two sides of the guide block form a flip-up avoidance part for the heat shrink film to flip up and deform. At the same time, the guide block limits the upward movement of the middle part of the heat shrink film, which is conducive to making the flip-up height of both sides of the heat shrink film consistent.

[0016] A further beneficial effect is that the arrangement of the film pushing roller or the film pushing wheel prevents the heat shrink film from accumulating in the guide extension spacing, which is beneficial for the heat shrink film to be smoothly discharged. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 It is a schematic diagram of the heat shrink film wrapping process of the existing shoe film machine in the background technology.

[0018] Figure 2 It is a top view structural schematic diagram of a three-dimensional shoe film coating machine according to an embodiment of the utility model.

[0019] Figure 3 It is a schematic diagram of the internal structure of a three-dimensional shoe film coating machine according to an embodiment of the utility model.

[0020] Figure 4 yes Figure 3 An enlarged view of the local structure after being flipped 90 degrees at point A in the middle.

[0021] Figure 5 yes Figure 3 An enlarged view of the local structure after flipping 90 degrees at point B in the middle.

[0022] Figure 6 It is a schematic diagram of a heat shrink film wrapping process of a three-dimensional shoe film wrapping machine according to an embodiment of the utility model. DETAILED DESCRIPTION

[0023] The utility model is now further described in conjunction with the accompanying drawings and specific embodiments.

[0024] refer to Figures 2 to 6, This embodiment of the utility model discloses an embodiment of the specific application of a film cutting device for a shoe film machine in a three-dimensional wrapping shoe film machine. A three-dimensional wrapping shoe film machine includes a housing 10. Inside the front part of the housing 10, there is a material bin 11 for placing a heat-shrinkable film roll. An outlet 12 for the film is provided at the rear of the housing 10. Between the material bin and the outlet 12, there is a film outlet device for driving the heat-shrinkable film to discharge. At the rear of the housing 10, there is an integrated stepping panel 13. Between the film outlet device and the outlet 12, there is a film cutting device. Around the stepping panel 13, there is a hot air shrinking device. The film cutting device includes a film cutting opening 14, two hot cutting clamping blocks 15 (the hot cutting and clamping principle of the hot cutting clamping blocks 15 in this embodiment is prior art, so it will not be elaborated in detail here.), an extension part 16, and a guiding block 17;

[0025] The film cutting opening 14 is opened on the upper surface of the housing 10. The hot cutting clamping blocks 15 can be oppositely clamped and arranged inside the film cutting opening 14. The opposite ends of the two hot cutting clamping blocks 15 are rotatably arranged on the housing 10. Inside the housing 10, there is a flipping driving structure for driving the hot cutting clamping blocks 15 to turn up, melt and clamp off the heat-shrinkable film and then reset; The extension part 16 is integrally or separately arranged on the housing 10 in an L shape. The outlet 12 is located above the extension part 16. The film cutting opening 14 is located between the extension part 16 and the hot air shrinking device; The guiding block 17 is integrally or separately arranged on the housing 10 above the middle of the extension part 16. Between the guiding block 17 and the extension part 16, there is a guiding extension distance 18 for guiding the arc-shaped film outlet to make the two sides of the heat-shrinkable film have a turned-up and heat-clamped deformation amount. Between the left and right sides of the guiding block 17 and the extension part 16, there is a turning-up avoidance part 19 for the heat-shrinkable film to turn up and deform.

[0026] The film outlet device includes a clamping pair of rollers 20, a first motor (not shown in the figure), and two first gears (not shown in the figure). The clamping pair of rollers 20 is rotatably arranged on the housing 10. The two first gears are meshed with each other and arranged on the rotating shaft of the clamping pair of rollers 20. The housing of the first motor is fixedly arranged on the housing 10. The rotating shaft of the first motor is fixedly connected to the rotating shaft of the clamping pair of rollers 20.

[0027] On the extension part 16, there is a film pushing structure for preventing the heat-shrinkable film from accumulating in the guiding extension distance 18. The film pushing structure includes a film pushing roller 21. The film pushing roller 21 is located at both ends of the guiding extension distance 18 and is respectively rotatably arranged on the extension part 16. The extension part 16 is provided with a rotating driving structure for driving the film pushing roller to rotate. The film pushing roller 21 is linked with the clamping pair of rollers 20. By using the power source of the clamping pair of rollers 20 to rotate and push the film body, the usage amount of the motor can be reduced and the equipment cost can be lowered.

[0028] The number of the film pushing rollers 21 is two, three or four. The rotation driving structure includes a plurality of track wheels 22 and a plurality of tracks 23. The track wheels 22 are fixedly sleeved on the rotating shafts on the left and right sides of the film pushing rollers 21 and one rotating shaft of the clamping counter rollers 20. The tracks 23 are sleeved on the track wheels 22 of the clamping counter rollers 20 and adjacent film pushing rollers 21 and are alternately sleeved on the track wheels 22 of two adjacent film pushing rollers 21 left and right.

[0029] The hot air shrinking device includes a U-shaped heating wire cover 24, a heating wire 25, a first fan 26 and an air supply duct 27. The pressing panel 13 is integrally arranged on the housing 10. The U-shaped heating wire cover 24 is integrally or separately and closely arranged on the housing 10 on the upper surface of the pressing panel 13. The heating wire 25 is arranged in the U-shaped heating wire cover 24. A plurality of air outlet holes 28 are spacedly arranged on the inner side surface of the U-shaped heating wire cover 24. The first fan 26 is arranged inside the housing 10. A ventilation opening for air to flow to the first fan 26 is formed on the housing 10. The air inlet of the air supply duct 27 is communicated with the air outlet surface of the first fan 26. A plurality of air outlet openings 29 are arranged on the air supply duct 27. The air outlet openings 29 are communicated with the inside of the U-shaped heating wire cover 24.

[0030] The extension part 16 is provided with a film laying structure for driving the heat shrinkable film to move onto the pressing panel 13. The film laying structure includes a second fan 30, an air outlet channel 31 and an air supply hose 32. The second fan 30 is arranged inside the housing 10. A ventilation opening for air to flow to the second fan 30 is formed on the housing 10. The air outlet channel 31 is arranged on the housing 10 or the guide block 17. The air outlet of the air outlet channel 31 faces the pressing panel 13. One end of the air supply hose 32 is connected to the air outlet surface of the second fan 30, and the other end is connected to the air inlet of the air outlet channel 31. A light passing hole for the air supply hose 32 to pass through is formed on one side of the front end of the housing 10.

[0031] On the inner side surfaces of the two sides at the rear end of the pressing panel 13 on the U-shaped heating wire cover 24, inverted V-shaped guide inclined surfaces 33 for guiding the three-dimensional free ends of the heat shrinkable film after hot melting and clamping to centrally discharge onto the pressing panel 13 are integrally arranged. An air flow channel 34 for air flow to pass through is formed between the guide inclined surfaces 33 on the U-shaped heating wire cover 24.

[0032] The flip driving structure includes two driving shafts 35, two second gears 36, and a second motor 37. The two driving shafts 35 are fixedly inserted on the opposite ends of the two hot-cut clamps 15. Both ends of the driving shafts 35 are rotatably set on the shell 10. The two second gears 36 are meshed with each other and set on the two shafts. The outer shell of the second motor 37 is fixedly set on the shell 10, and the rotating shaft of the second motor 37 is fixedly connected to one of the driving shafts 35.

[0033] Further, the heating wire cover 24 is integrally arranged on the housing 10, and an installation opening 38 for disassembling and assembling the heating wire 25 is provided on the housing 10 below the heating wire cover 24, and a sealing gasket is detachably installed on the installation opening 38 and a sealing plate 39 is provided, and the air outlet of the air supply duct 27 is integrally arranged or glued and tightly arranged on the sealing plate 39. Alternatively, the heating wire cover is separately and tightly arranged on the housing, and a sealing gasket is pressed on the lower port of the heating wire cover and is detachably arranged on the housing 10 through an installation protrusion and a bolt, and the air outlet of the air supply duct is glued and tightly arranged on the housing 10.

[0034] A method for using a three-dimensional shoe film coating machine:

[0035] Open the cover at the front end of the housing 10, install the heat shrink film roll in the silo, and manually pull the free end of the heat shrink film roll through the clamping rollers 20 and the guide extension spacing 18 in sequence, and pull it to the stepping panel 13 for the first hot melt pinching, so that the free end of the heat shrink film roll forms a semi-boat-shaped three-dimensional tip. The clamping rollers 20 clamp the heat shrink film to discharge the material, the film pushing roller 21 rotates to prevent the heat shrink film from accumulating at the guide extension spacing 18, and the air outlet channel 31 supplies air to the three-dimensional tip of the heat shrink film. The wind force gathers in the three-dimensional tip to push the free end of the heat shrink film to flatten forward and backward toward the stepping panel. When the shoe steps on the pressing panel 13 (the induction control of the hot-cut clamp 15 and the clamping roller 20 adopts conventional sensing settings, so it is not described in detail here), the hot-cut clamp 15 hot-melts and clamps the heat shrink film again, so that the cut heat shrink film is in a boat shape, and the two ends of the boat-shaped heat shrink film are in an upward three-dimensional shape, which maximizes the upward height of the heat shrink film, increases the height of the heat shrink film cover on the shoe surface after heat shrinkage, and prevents the heat shrink film cover from detaching from the shoe body.

[0036] Based on the foregoing technical solution, the film pushing structure may also include at least one film pushing wheel, which is rotatably arranged on the extension part at the guiding extension spacing, and the extension part is provided with a rotation driving structure for driving the film pushing wheel to rotate; the rotation driving structure includes a plurality of track wheels, a plurality of tracks, and a third motor. The track wheels are fixedly sleeved on the rotating shafts on the left and right sides of the film pushing wheel. The tracks are alternately sleeved on the track wheels of adjacent two film pushing wheels from left to right. The housing of the third motor is fixedly arranged on the housing, and the rotating shaft of the third motor is fixedly connected to the rotating shaft of one of the film pushing wheels.

[0037] Based on the foregoing technical solution, when the hot air shrinking device presses down the exposed hot air outlet by using the prior art, inverted V-shaped guiding inclined surfaces for guiding the three-dimensional free end after the heat shrinkable film is heat-melted and clamped to discharge centrally onto the stepping panel are arranged on both sides at the rear end of the sinking pedal on the stepping panel. The guiding inclined surfaces are integrally formed with the housing, and a gas flow channel for gas flow is formed between the guiding inclined surfaces.

[0038] The foregoing has shown and described the basic principles, main features and advantages of the present invention. Those skilled in the art should understand that the present invention is not limited by the above embodiments. The above embodiments and descriptions are only used to illustrate the principles of the present invention. Without departing from the spirit and scope of the present invention, the present invention will have various changes and improvements, and all these changes and improvements fall within the scope of the present invention claimed. The scope of the present invention claimed is defined by the appended claims and their equivalents.

Claims

1. A film cutting device for a shoe film machine, characterized in that: It includes a film outlet, a film cutting outlet, two hot cutting clamps, an extension part, and a guide block; The film outlet and the film cutting outlet are both opened on the external shell body, the heat-cutting clamps can be clamped in the film cutting outlet, the facing ends of the two heat-cutting clamps can be rotatably arranged on the external shell body, and a flipping driving structure is arranged inside the external shell body; the extension part is arranged on the external shell body in an L shape, the film outlet is located above the extension part, and the film cutting outlet is located behind the extension part; the guide block is located above the middle part of the extension part and is arranged on the external shell body, a guide extension distance is formed between the guide block and the extension part, and a flip-up avoidance part is formed between the left and right sides of the guide block and the extension part.

2. A film cutting device for a shoe film machine according to claim 1, characterized in that: The extension portion is provided with a film pushing structure to prevent the heat shrink film from accumulating within the guide extension interval.

3. A film cutting device for a shoe film machine according to claim 2, characterized in that: The film pushing structure comprises at least one film pushing roller, and both ends of the film pushing roller are rotatably arranged on the extension part at the guide extension interval, and the extension part is provided with a rotation driving structure for driving the film pushing roller to rotate.

4. A film cutting device for a shoe film machine according to claim 2, characterized in that: The film pushing structure comprises at least one film pushing wheel, which is located at the guide extension interval and rotatably arranged on the extension portion, and the extension portion is provided with a rotation driving structure for driving the film pushing wheel to rotate.

5. The film cutting device for a shoe film machine according to claim 3, characterized in that: The number of the film pushing rollers is two, three, four or five, and the rotating drive structure includes a plurality of track wheels, a plurality of tracks, and a first motor. The track wheels are fixedly sleeved on the rotating shafts on the left and right sides of the film pushing rollers, and the track sleeves are alternately sleeved on the track wheels of two adjacent film pushing rollers. The outer shell of the first motor is fixedly disposed on the external shell, and the rotating shaft of the first motor is transmission-connected to the film pushing roller.

6. The film cutting device for a shoe film machine according to claim 4, characterized in that: The number of the film pushing wheels is two, three, four or five, and the rotating driving structure includes a plurality of track wheels, a plurality of tracks and a third motor. The track wheels are fixedly sleeved on the rotating shafts on the left and right sides of the film pushing wheels, and the tracks are alternately sleeved on the track wheels of two adjacent film pushing wheels. The outer shell of the third motor is fixedly disposed on the shell, and the rotating shaft of the third motor is transmission-connected to the rotating shaft of one of the film pushing wheels.

7. A film cutting device for a shoe film machine according to claim 1, 2, 3 or 4, characterized in that: The flip driving structure includes two driving shafts, two second gears, and a second motor. The two driving shafts are fixedly inserted on the opposite ends of the two hot-cut clamps. Both ends of the driving shafts are rotatably arranged on the external shell. The two second gears are meshed with each other and arranged on the two shafts. The outer shell of the second motor is fixedly arranged on the external shell, and the rotating shaft of the second motor is fixedly connected to one of the driving shafts.

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