High-frequency heat sealing machine with adjustable heat sealing interval

Abstract

The utility model relates to the technical field of high-frequency heat sealing machines, and particularly discloses a high-frequency heat sealing machine with an adjustable heat sealing interval, which can be applied to the production of medical air cushions, when one sliding block moves to a heat sealing area, an upper die holder is driven by a second driving device to move downwards along the z direction, and the sliding block is pressed downwards by the upper die holder. Two layers of film materials placed on the lower die bases are connected in a heat sealing mode, after heat sealing is completed, the film materials are moved to the first feeding and discharging area or the second feeding and discharging area, feeding and discharging of the film materials are conducted, at the moment, the other sliding block drives the corresponding lower die base to move to the heat sealing area, the heat sealing action is conducted synchronously, and efficiency is improved. The first nuts are arranged at the two ends of each base plate in the x direction, the first nuts are in threaded fit with the screws, the positions of the base plates can be adjusted by rotating and adjusting the positions of the first nuts, and therefore the interval between the two base plates in the x direction is adjusted, and the adjusting difficulty is low.

Description

Technical Field

[0001] The utility model relates to the technical field of high-frequency heat sealing machines, in particular to a high-frequency heat sealing machine with adjustable heat sealing interval. Background Art

[0002] A medical air cushion is a cushion that can be injected with air. It can be placed under the pressure areas of bedridden patients to relieve pressure, prevent pressure sores, promote blood circulation, relieve pain and promote sleep.

[0003] Medical air cushions are usually formed by heat-sealing film materials such as PVC film and rubber film. A high-frequency heat sealing machine is usually used for heat sealing connection. First, two layers of film are placed on the lower die base of the high-frequency heat sealing machine. When the upper and lower plates of the high-frequency heat sealing machine are energized, high-frequency energy is generated. The high-frequency energy is used to heat the two layers of film. The internal molecules of the two layers of film are excited and move at high speed, rubbing against each other to generate heat and melt. Then, the upper die base of the high-frequency heat sealing machine is used to press down to achieve the purpose of welding.

[0004] The lower die base of a high-frequency heat sealer typically incorporates multiple pads for film pressing, enabling the machine to create multiple heat-sealed areas in a single pass. In actual production, due to the varying specifications of medical air cushions, the spacing between the pads often needs to be adjusted to accommodate varying production needs. Existing high-frequency heat sealers typically require replacing the lower die base to produce different sizes of medical air cushions, making the process cumbersome.

[0005] Therefore, the existing technology still needs to be improved and developed. Utility Model Content

[0006] In view of the above-mentioned deficiencies in the prior art, the purpose of the present invention is to provide a high-frequency heat sealing machine with adjustable heat sealing interval to solve the above-mentioned problems.

[0007] A high-frequency heat sealing machine with adjustable heat sealing interval, comprising:

[0008] A machine platform, wherein a first loading and unloading area, a heat sealing area, and a second loading and unloading area are sequentially arranged along the x direction on the machine platform;

[0009] The conveying device includes a first driving device provided on the machine platform along the x-direction, two sliders connected to the output end of the first driving device, a lower electrode plate fixed to the upper end of the slider, a first carrier plate fixed to the upper end of the lower electrode plate, and a lower mold base fixed to the upper end of the first carrier plate and used to place two layers of film materials;

[0010] The heat sealing device comprises an upper die seat movable in the heat sealing zone along the z-direction and an upper electrode plate fixed to the upper end of the upper die seat; the upper die seat can be moved downward along the z-direction to heat-seal and connect the two layers of the film material placed on the lower die seat;

[0011] One of the sliders can drive the corresponding lower die base to move to the first loading and unloading area or the heat bonding area;

[0012] The other slider can drive the corresponding lower die base to move to the second loading and unloading area or the heat bonding area;

[0013] The lower mold base includes a tray, positioning pins provided on both sides of the tray along the x-direction, a plurality of pads provided on the inner side of the tray and spaced apart along the x-direction, and a screw fixed in the tray along the x-direction, the screw passing through the pad, and the screw is provided with a plurality of fasteners for clamping and fixing the pad, the fasteners including two first nuts respectively provided at the front and rear ends of the pad along the x-direction and both of which cooperate with the screw thread.

[0014] Specifically, a guide rod extending along the x-direction is further provided in the tray, and the guide rod passes through the pad.

[0015] Specifically, at least one end of the tray along the x-direction is provided with a detachable side cover, and the screw rod and the guide rod are both fixed to the side cover via a second nut.

[0016] Specifically, at least two positioning pins are provided on both sides of the tray along the x-direction.

[0017] Specifically, the platform is provided with a guide rail for guiding the lower electrode plate to slide along the x-direction.

[0018] Specifically, the heat sealing device also includes a column fixed on the machine platform, a top plate fixed on the column, a second driving device fixed to the top plate and drivable along the z direction, a second carrier plate connected to the output end of the second driving device, and an adjustment plate fixed to the lower end of the second carrier plate, and the upper electrode plate is fixed to the lower end of the adjustment plate.

[0019] Specifically, the high-frequency heat sealing machine also includes a horizontal adjustment mechanism, which includes a first connecting block fixed to the four sides of the second carrier plate, a second connecting block fixed to the four sides of the adjustment plate and corresponding to the position of the first connecting block, and a bolt and nut adjustment member for connecting the upper and lower first connecting blocks and the second connecting blocks.

[0020] Specifically, a grounding module is further provided between the machine and the upper electrode plate, and the grounding module includes a conductive connecting plate electrically connected to the upper electrode plate, a conductive contact piece fixed to the lower end of the conductive connecting plate, and a grounding plate provided on the machine, the grounding plate is connected to a grounding wire, and the conductive contact piece can be moved downward along z until it abuts against the grounding plate.

[0021] Specifically, the conductive contact piece is a C-shaped metal contact piece with elasticity.

[0022] Beneficial effects of the utility model:

[0023] The high-frequency heat sealing machine of the present invention can be applied to the production of medical air cushions. First, two layers of film materials are placed on the lower mold base. When one of the sliders drives its corresponding lower mold base to move to the heat sealing area, the lower plate and the upper plate are energized to generate high-frequency electromagnetic field energy, which acts on the two layers of film materials. The molecules on the surface will be subjected to strong vibration and friction, thereby generating heat, causing the film material to reach the melting point in a short time. Then, the upper mold base is driven to move downward along the z direction by the second driving device. The two layers of film materials placed on the lower mold base are heat-sealed together by the downward pressure of the upper mold base. After the heat sealing is completed, the upper plate is passed through the upper mold base. The two sliders are driven by the first driving device to move the film material that has completed the heat-sealed connection to the first loading and unloading area or the second loading and unloading area for loading and unloading of the film material. At this time, the other slider drives its corresponding lower mold base to move to the heat-sealing area, and the heat-sealing action is performed synchronously to improve efficiency. A screw and a first nut are also provided. A first nut is provided at both ends of each pad along the x-direction. The first nut cooperates with the screw thread. The position of the first nut can be adjusted by rotating to achieve position adjustment of the pad, thereby adjusting the interval between the two pads along the x-direction, and the adjustment difficulty is low. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] Figure 1 A three-dimensional diagram of a high-frequency heat sealing machine according to an embodiment of the present application;

[0025] Figure 2 A top view of a high-frequency heat sealing machine according to an embodiment of the present application;

[0026] Figure 3 for Figure 2 Sectional view along line AA;

[0027] Figure 4 A perspective view of a conveying device according to an embodiment of the present application;

[0028] Figure 5 A three-dimensional diagram of the lower mold base according to an embodiment of the present application;

[0029] Figure 6 This is a schematic diagram of the structure of the lower mold base of this application after placing two layers of membrane materials;

[0030] Figure 7 It is a schematic diagram of the structure after the two layers of membrane materials are heat-sealed.

[0031] The figures are marked as: machine 10, first loading and unloading area 11, heat sealing area 12, second loading and unloading area 13, conveying device 20, first driving device 21, slider 22, lower electrode plate 23, first carrier plate 24, film material 70, lower mold base 25, heat sealing device 30, upper mold base 37, upper electrode plate 36, tray 251, positioning pin 252, pad 253, screw 254, first nut 255, guide rod 256, side cover 257, second nut 258, guide rail 14, column 31, top plate 32, second driving device 33, second carrier plate 34, adjustment plate 35, horizontal adjustment mechanism 40, first connecting block 41, second connecting block 42, bolt and nut adjustment member 43, grounding module 50, conductive connecting plate 51, conductive contact member 52, grounding plate 53. DETAILED DESCRIPTION

[0032] The present invention provides a high-frequency heat sealer with adjustable heat sealing interval. To make the purpose, technical solution, and effects of the present invention more clear and explicit, the present invention is further described in detail below with reference to the accompanying drawings and examples. It should be understood that the specific examples described herein are only intended to explain the present invention and are not intended to limit the present invention.

[0033] In the description of the present invention, it should be understood that descriptions involving orientations, such as up, down, front, back, left, right, etc., indicating orientations or positional relationships, are based on the orientations or positional relationships shown in the accompanying drawings. They are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation. Therefore, they cannot be understood as limitations on the present invention.

[0034] like Figures 1 to 7 This embodiment discloses a high-frequency heat sealing machine with adjustable heat sealing interval, comprising:

[0035] The machine platform 10 is provided with a first loading and unloading area 11, a heat-sealing area 12, and a second loading and unloading area 13 in sequence along the x direction;

[0036] The conveying device 20 includes a first driving device 21 provided on the machine platform 10 along the x-direction, two slides 22 connected to the output ends of the first driving device 21, a lower electrode plate 23 fixed to the upper ends of the slides 22, a first carrier plate 24 fixed to the upper ends of the lower electrode plate 23, and a lower mold base 25 fixed to the upper end of the first carrier plate 24 and used to place two layers of film material 70;

[0037] The heat sealing device 30 includes an upper die holder 37 movable in the heat sealing zone 12 along the z-axis, and an upper electrode plate 36 fixed to the upper end of the upper die holder 37; the upper die holder 37 can move downward along the z-axis to heat-seal the two layers of film 70 placed on the lower die holder 25;

[0038] One of the sliders 22 can drive its corresponding lower die base 25 to move to the first loading and unloading area 11 or the heat bonding area 12;

[0039] Another slider 22 can drive its corresponding lower die base 25 to move to the second loading and unloading area 13 or the heat bonding area 12;

[0040] The lower mold base 25 includes a tray 251, positioning pins 252 provided on both sides of the tray 251 along the x-direction, a plurality of pads 253 provided on the inner side of the tray 251 and spaced apart along the x-direction, and a screw 254 fixed in the tray 251 along the x-direction. The screw 254 passes through the pad 253. The screw 254 is provided with a plurality of fasteners for clamping and fixing the pad 253. The fasteners include two first nuts 255 respectively provided at the front and rear ends of the pad 253 along the x-direction and both of which are threadedly engaged with the screw 254.

[0041] The high-frequency heat sealing machine of this embodiment can be applied to the production of medical air cushions. First, two layers of film material 70 are placed on the lower mold base 25. The two sliders 22 are driven by the first driving device 21. The two sliders 22 drive the two lower plates 23, the two first carriers 24 and the two lower mold bases 25 to move along the x direction. When one of the sliders 22 drives its corresponding lower mold base 25 to move to the heat sealing area 12, the lower plate 23 and the upper plate 36 are energized to generate high-frequency electromagnetic field energy and act on the two layers of film material 70. The molecules on the surface will be subjected to strong vibration and friction, thereby generating heat. The amount of film material 70 reaches the melting point in a short time, and then the upper mold base 37 is driven by the second driving device 33 to move downward along z, and the two layers of film material 70 placed on the lower mold base 25 are heat-sealed by the downward pressure of the upper mold base 37. After the heat sealing is completed, the two sliders 22 are driven by the first driving device 21 to move the film material 70 with the heat-sealed connection to the first loading and unloading area 11 or the second loading and unloading area 13 for loading and unloading of the film material 70, while at this time the other slider 22 drives its corresponding lower mold base 25 to move to the heat sealing area 12, and the heat sealing action is performed synchronously to improve efficiency.

[0042] This embodiment adopts a structure of an upper mold base 37 and an upper electrode plate 36 with switchable positions. During heat sealing, the circuit control problem of the lower electrode plate 23 and the two upper electrodes 36 also needs to be considered. The circuit control of the two upper electrodes 36 is a relatively common technical means in the circuit field, and will not be described in detail below.

[0043] In the actual production process, due to the different sizes of medical air cushions, it is necessary to adjust the spacing between the two pads 253 along the x-direction before the film material 70 is heat-sealed. To this end, the present application sets a screw 254 and a first nut 255. A first nut 255 is set at both ends of each pad 253 along the x-direction. The first nut 255 is threadedly engaged with the screw 254. The position of the first nut 255 can be adjusted by rotating to achieve position adjustment of the pad 253, thereby adjusting the spacing between the two pads 253 along the x-direction, and the adjustment difficulty is low.

[0044] Please refer to Figure 5 In this embodiment, the tray 251 is also provided with a guide rod 256 extending along the x-direction. The guide rod 256 passes through the pad 253. By setting the guide rod 256, the pad 253 can be better guided to move along the x-direction. The guide rod 256 is also parallel to the screw 254 to ensure the straightness of the pad 253 along the y-direction.

[0045] Since different specifications of film materials 70 require different numbers of pads 253 for heat sealing, the tray 251 is further provided with a detachable side cover 257 at at least one end along the x-direction, and the screw 254 and the guide rod 256 are fixed to the side cover 257 by a second nut 258. When it is necessary to install or remove the pad 253 on the screw 254, the side cover 257 can be removed and the pad 253 on the screw 254 can be removed or the pad 253 can be installed on the screw 254. The structure is ingenious.

[0046] Please refer to Figure 5 and Figure 6 The positioning pins 252 are used to insert into the jacks at both ends of the film material 70 along the x-direction, thereby fixing the film material 70. In order to improve the fixing effect of the film material 70, the tray 251 of this embodiment is provided with at least two positioning pins 252 on both sides along the x-direction.

[0047] Please refer to Figure 4 In this embodiment, the machine 10 is provided with a guide rail 14 for guiding the lower electrode plate 23 to slide along the x-direction. By providing the guide rail 14, the stability of the lower electrode plate 23 sliding along the x-direction is improved.

[0048] Please refer to Figure 2 and Figure 3 The heat sealing device 30 of this embodiment also includes a column 31 fixed on the machine 10, a top plate 32 fixed on the column 31, a second driving device 33 fixed to the top plate 32 and drivable along the z direction, a second carrier plate 34 connected to the output end of the second driving device 33, and an adjustment plate 35 fixed to the lower end of the second carrier plate 34. The upper electrode 36 is fixed to the lower end of the adjustment plate 35. The second driving device 33 can adopt a cylinder, and the second carrier plate 34 is driven to move along the z direction by the second driving device 33, thereby driving the upper mold base 37 to move along the z direction.

[0049] Please refer to Figure 1 The high-frequency heat sealing machine also includes a horizontal adjustment mechanism 40, which includes a first connecting block 41 fixed to the four sides of the second carrier plate 34, a second connecting block 42 fixed to the four sides of the adjustment plate 35 and corresponding to the position of the first connecting block 41, and a bolt and nut adjustment member 43 for connecting the upper and lower first connecting blocks 41 and the second connecting block 42. By adjusting the bolt and nut adjustment members 43 in four directions, the horizontality of the adjustment plate 35 can be adjusted, thereby adjusting the horizontality of the lower end surface of the upper mold base 37 to ensure a better heat-sealing connection effect of the two layers of film material 70.

[0050] Since the power supply device will output a higher voltage, the upper plate 36 and the lower plate 23 are prone to leakage during the welding process of the two layers of film material 70. For this reason, please refer to Figure 1 In this embodiment, a grounding module 50 is further provided between the machine 10 and the upper electrode plate 36. The grounding module 50 includes a conductive connecting plate 51 electrically connected to the upper electrode plate 36, a conductive contact member 52 fixed to the lower end of the conductive connecting plate 51, and a grounding plate 53 provided on the machine 10. The grounding plate 53 is connected to a grounding wire, and the conductive contact member 52 can move downward along z until it abuts against the grounding plate 53. When the upper electrode plate 36 is pressed downward, the conductive connecting plate 51 and the conductive contact member 52 will be driven downward, so that the conductive contact member 52 contacts the grounding plate 53. The grounding plate 53 is connected to the ground through the grounding wire, thereby forming a good grounding to avoid leakage.

[0051] Furthermore, the conductive contact member 52 is a C-shaped metal contact piece with elasticity. The C-shaped metal contact piece has better elastic recovery performance and better contact effect between the conductive contact member 52 and the grounding plate 53.

[0052] The above specifically describes the preferred embodiments of the present invention, but the present invention is not limited to the embodiments. Those skilled in the art may make various equivalent modifications or substitutions without violating the spirit of the present invention. These equivalent modifications or substitutions are all included in the scope defined by the claims of the present invention.

Claims

1. A high-frequency heat sealing machine with adjustable heat sealing interval, characterized in that: include: A machine platform (10), wherein a first loading and unloading area (11), a heat-sealing area (12), and a second loading and unloading area (13) are sequentially provided on the machine platform (10) along the x-direction; A conveying device (20) comprises a first driving device (21) provided on the machine (10) along the x-direction, two sliders (22) connected to the output end of the first driving device (21), a lower electrode plate (23) fixed to the upper end of the sliders (22), a first carrier plate (24) fixed to the upper end of the lower electrode plate (23), and a lower mold base (25) fixed to the upper end of the first carrier plate (24) and used for placing two layers of film materials (70); A heat sealing device (30) comprises an upper die seat (37) movable in the heat sealing zone (12) along the z direction, and an upper electrode plate (36) fixed to the upper end of the upper die seat (37); the upper die seat (37) can be moved downward along the z direction to heat-seal and connect the two layers of the film material (70) placed on the lower die seat (25); One of the sliders (22) can drive the corresponding lower die base (25) to move to the first loading and unloading area (11) or the heat-sealing area (12); Another slider (22) can drive the corresponding lower die base (25) to move to the second loading and unloading area (13) or the heat-sealing area (12); The lower die base (25) includes a tray (251), positioning pins (252) provided on both sides of the tray (251) along the x-direction, a plurality of pads (253) provided on the inner side of the tray (251) and spaced apart along the x-direction, and a screw (254) fixed in the tray (251) along the x-direction, wherein the screw (254) passes through the pad (253), and the screw (254) is provided with a plurality of fasteners for clamping and fixing the pad (253), wherein the fasteners include two first nuts (255) respectively provided at the front and rear ends of the pad (253) along the x-direction and both of which are threadedly engaged with the screw (254).

2. A high-frequency heat sealing machine with adjustable heat sealing interval according to claim 1, characterized in that: A guide rod (256) extending along the x-direction is further provided in the tray (251), and the guide rod (256) passes through the pad (253).

3. A high frequency heat sealing machine with adjustable heat sealing interval according to claim 2, characterized in that: At least one end of the tray (251) along the x-direction is provided with a detachable side cover (257), and the screw rod (254) and the guide rod (256) are fixed to the side cover (257) via a second nut (258).

4. A high frequency heat sealing machine with adjustable heat sealing interval according to claim 1, characterized in that: At least two positioning pins (252) are provided on both sides of the tray (251) along the x-direction.

5. The high-frequency heat sealing machine with adjustable heat sealing interval according to claim 1, characterized in that: The machine platform (10) is provided with a guide rail (14) for guiding the lower electrode plate (23) to slide along the x-direction.

6. A high frequency heat sealing machine with adjustable heat sealing interval according to claim 1, characterized in that: The heat sealing device (30) further comprises a column (31) fixed on the machine (10), a top plate (32) fixed on the column (31), a second driving device (33) fixed on the top plate (32) and capable of driving in the z-direction, a second carrier plate (34) connected to the output end of the second driving device (33), and an adjustment plate (35) fixed to the lower end of the second carrier plate (34); and the upper electrode plate (36) is fixed to the lower end of the adjustment plate (35).

7. A high frequency heat sealing machine with adjustable heat sealing interval according to claim 6, characterized in that: The high-frequency heat sealing machine further comprises a horizontal adjustment mechanism (40), the horizontal adjustment mechanism (40) comprising a first connecting block (41) fixed to the four sides of the second carrier plate (34), a second connecting block (42) fixed to the four sides of the adjustment plate (35) and corresponding to the position of the first connecting block (41), and a bolt and nut adjustment member (43) for connecting the upper and lower first connecting blocks (41) and the second connecting blocks (42).

8. The high-frequency heat sealing machine with adjustable heat sealing interval according to claim 1, characterized in that: A grounding module (50) is further provided between the machine (10) and the upper electrode plate (36), the grounding module (50) comprising a conductive connecting plate (51) electrically connected to the upper electrode plate (36), a conductive contact member (52) fixed to the lower end of the conductive connecting plate (51), and a grounding plate (53) provided on the machine (10), the grounding plate (53) being connected to a grounding wire, and the conductive contact member (52) being movable downward along z until it contacts the grounding plate (53).

9. A high frequency heat sealing machine with adjustable heat sealing interval according to claim 8, characterized in that: The conductive contact piece (52) is a C-shaped metal contact piece with elasticity.

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