Heat sealing device for film sealing equipment

Abstract

The utility model discloses a heat sealing device for film sealing equipment, which belongs to the technical field of film sealing and comprises a frame, a base plate, a film pressing plate, a heating plate, a pressure bearing seat and a lifting mechanism. The base plate is slidably connected relative to the rack in the height direction, the lifting mechanism is fixed to the rack, and the output end of the lifting mechanism is connected with the base plate. The film pressing plate is located below the base plate and is in sliding connection relative to the base plate in the height direction, an elastic piece is further connected between the film pressing plate and the base plate, and the elastic piece is used for providing elastic force enabling the film pressing plate and the base plate to be away from each other; the heating plate is fixed on one side of the top surface of the film pressing plate; and the pressure-bearing seat is fixedly connected with the rack and is positioned below the film pressing plate. According to the film sealing device, pressure can be applied to the film pressing plate through the base plate and the elastic piece, and meanwhile the film pressing plate can be prevented from crushing a product to be sealed with a film.

Description

Technical Field

[0001] The utility model relates to the technical field of film sealing, and particularly relates to a heat sealing device for a film sealing device. Background Art

[0002] A film sealing device is a device for connecting a film to the surface of a product to be film-sealed by hot pressing, so as to seal the surface of the product to be film-sealed with the film.

[0003] For example, in the Chinese invention patent with the publication number CN116331580A (i.e., Document 1), the upper film hot pressing assembly and the lower film hot pressing assembly are respectively responsible for hot pressing the film material on two opposite sides of the workpiece. Both the upper film hot pressing assembly and the lower film hot pressing assembly include a driving mechanism and a hot pressing head driven thereby. When in use, the two hot pressing heads respectively hot press the film material on two opposite sides of the workpiece.

[0004] However, in this invention patent, the pressure from the upper film hot pressing assembly and the lower film hot pressing assembly directly acts on the workpiece without buffering, so it is easy to damage the workpiece. Summary of the Invention

[0005] Aiming at the problem that the hot pressing assembly in the prior art is easy to damage the product to be film-sealed, the purpose of the utility model is to provide a heat sealing device for a film sealing device to at least partially solve the above problems.

[0006] To achieve the above purpose, the technical solution of the utility model is as follows:

[0007] A heat sealing device for a film sealing device includes a frame, a base plate, a film pressing plate, a heating plate, a bearing seat and a lifting mechanism; the base plate is slidably connected to the frame in the height direction, the lifting mechanism is fixed on the frame, and its output end is connected to the base plate; the film pressing plate is located below the base plate and is slidably connected to the base plate in the height direction. An elastic member is also connected between the film pressing plate and the base plate, and the elastic member is used to provide an elastic force for separating the film pressing plate and the base plate from each other; the heating plate is fixed on one side of the top surface of the film pressing plate; the bearing seat is fixedly connected to the frame and is located below the film pressing plate.

[0008] In some preferred embodiments, the lifting mechanism includes a lifting motor, a swing arm and a connecting rod. The lifting motor is fixedly connected to the frame, the swing arm is fixedly connected to the motor shaft of the lifting motor, and the two ends of the connecting rod are respectively hinged to the swing arm and the base plate.

[0009] In some preferred embodiments, the bearing seat is slidably connected to the frame in the horizontal direction.

[0010] In some preferred embodiments, a transmission mechanism is also fixed on the frame, and an output end of the transmission mechanism is connected to the pressure bearing seat.

[0011] In some preferred embodiments, the transmission mechanism includes a transmission motor, a transmission screw and a transmission nut, the transmission motor is fixedly connected to the frame, the transmission screw is rotatably connected to the frame, and one end of the transmission screw is connected to the motor shaft of the transmission motor, the transmission nut is screwed on the transmission screw, and the transmission nut is fixedly connected relative to the pressure seat.

[0012] In some preferred embodiments, a wire threading tube is fixed to the top surface of the heating plate, and a through hole for the wire threading tube to pass through is opened on the base plate.

[0013] In some preferred embodiments, the elastic member is a helical compression spring.

[0014] In some preferred embodiments, it also includes a suction cup and a negative pressure generating device; there are several suction cups and they are fixedly connected to the film pressing plate, and the adsorption surface of the suction cup protrudes from the bottom surface of the film pressing plate; the negative pressure generating device is fixedly connected to the frame, and each of the suction cups is connected to the negative pressure generating device through a pipeline.

[0015] In some preferred embodiments, the substrate is provided with a plurality of pipe-penetrating holes for the pipes to pass through.

[0016] By adopting the above technical scheme, the beneficial effect of the utility model is that: due to the arrangement of the substrate, the film pressing plate moving relative to the substrate, and the elastic member arranged between the substrate and the film pressing plate, the utility model can apply pressure to the film pressing plate through the substrate and the elastic member under the drive of the lifting mechanism, while preventing the film pressing plate from crushing the product to be sealed. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 It is the front view of the utility model.

[0018] Figure 2 It is a side view of the utility model.

[0019] Figure 3 It is a structural schematic diagram of the utility model.

[0020] Figure 4 It is a partial structural schematic diagram of the utility model.

[0021] Figure 5 It is a structural schematic diagram of the transmission mechanism in the utility model.

[0022] In the figure: 1 - base, 2 - hot pressing frame, 3 - substrate, 4 - guiding shaft, 5 - linear bearing, 6 - lifting motor, 7 - swing arm, 8 - connecting rod, 9 - connecting block, 10 - film pressing plate, 11 - guiding post, 12 - elastic member, 13 - heating plate, 14 - wire threading pipe, 15 - bearing seat, 16 - slide rail, 17 - slider, 18 - driving motor, 19 - driving lead screw, 20 - driving nut, 21 - suction cup. Detailed implementation manners

[0023] The following further describes the detailed implementation manners of the present utility model with reference to the accompanying drawings. It should be noted here that the description of these implementation manners is for helping to understand the present utility model, but does not constitute a limitation to the present utility model. In addition, the technical features involved in the various implementation manners of the present utility model described below can be combined with each other as long as they do not conflict with each other.

[0024] It should be noted that in the description of the present utility model, the orientation or positional relationship indicated by the terms "upper", "lower", "left", "right", "front", "rear", etc. is the description of the structure of the present utility model based on the accompanying drawings, and is only for the convenience of describing the present utility model simply, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation to the present utility model.

[0025] For the "first" and "second" in the present technical solution, they are only the appellation distinctions for the same or similar structures, or the corresponding structures with similar functions, rather than the arrangement of the importance of these structures, nor are there sorting, or comparing sizes, or other meanings.

[0026] In addition, unless otherwise clearly specified and defined, the terms "installation" and "connection" should be understood in a broad sense. For example, the connection can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be directly connected or indirectly connected through an intermediate medium, and can be the communication inside two structures. For those of ordinary skill in the art, the specific meanings of the above terms in the present utility model can be understood according to the general idea of the present utility model and in connection with the specific circumstances of this solution.

[0027] Embodiment 1

[0028] A heat sealing device for a film sealing device, as Figures 1-5 shown, includes a frame, a substrate 3, a film pressing plate 10, a heating plate 13, a bearing seat 15 and a lifting mechanism.

[0029] The frame includes a base 1 and a hot pressing frame 2 fixedly connected to one side of the top surface of the base 1 by screws. The hot pressing frame 2 has a top plate and two side plates. Both side plates are vertical and arranged relatively parallel, and the top plate is arranged horizontally.

[0030] The substrate 3 is arranged horizontally and is located on the lower side of the top plate in the hot pressing frame 2. The substrate 3 is slidably connected to the hot pressing frame 2 in the height direction. For example, a guiding shaft 4 is fixed to one side of the top surface of the substrate 3, and a linear bearing 5 that cooperates with the guiding shaft 4 is fixedly installed correspondingly on the top plate in the hot pressing frame 2. Usually, two guiding shafts 4 are configured to improve the movement stability of the substrate 3.

[0031] The lifting mechanism is fixedly connected to the frame, and the output end of the lifting mechanism is connected to the substrate 3. The lifting mechanism includes a lifting motor 6, a swing arm 7, and a connecting rod 8. The lifting motor 6 is fixed to the motor frame by screws, and the motor frame is fixedly connected to one side of the top surface of the top plate in the hot pressing frame 2 by screws. The swing arm 7 is fixedly connected to the motor shaft of the lifting motor 6, and both ends of the connecting rod 8 are pivotally connected to the swing arm 7 and the substrate 3 respectively through pin shafts. Usually, a connecting block 9 is fixed to the top surface of the substrate 3 by screws, and the connecting rod 8 is connected to the connecting block 9 through a pin shaft. It is easy to understand that a notch is provided on the top plate in the hot pressing frame 2 to facilitate the passing of the connecting rod 8 and the connecting block 9, so that the lifting mechanism can drive the substrate 3 to reciprocate up and down in the height direction.

[0032] The film pressing plate 10 is located below the substrate 3, and the two are parallel to each other. The film pressing plate 10 is also slidably connected to the substrate 3 in the height direction. For example, a guiding column 11 is fixed to the film pressing plate 10, and a guiding hole, a guiding sleeve or a guiding bearing adapted to the guiding column 11 is provided on the corresponding substrate 3. The upper end of the guiding column 11 extends to one side of the top surface of the substrate 3, and an anti-detaching block is provided at the upper end of the guiding column 11 to prevent the film pressing plate 10 from separating from the substrate 3, so that the film pressing plate 10 can lift relative to the substrate 3 along the guiding column 11. An elastic member 12 is also connected between the film pressing plate 10 and the substrate 3. The elastic member 12 is used to provide an elastic force that makes the film pressing plate 10 and the substrate 3 move away from each other. The elastic member 12 is a helical compression spring and is sleeved on the guiding column 11. With such a setting, not only can pressure be applied to the film pressing plate 10 through the substrate 3 and the elastic member 12, but also the film pressing plate 10 can be prevented from damaging the product to be film-sealed.

[0033] The heating plate 13 is fixedly connected to one side of the top surface of the film pressing plate 10. An electric heating wire (not shown in the figure) is provided inside the heating plate 13. Both the heating plate 13 and the film pressing plate 10 are made of materials with high thermal conductivity, such as steel plates. The size of the heating plate 13 is slightly smaller than that of the film pressing plate 10, so that the heating plate 13 can avoid the guiding column 11. A wire passing tube 14 is fixed to the top surface of the heating plate 13 to facilitate the electric heating wire to pass through the wire passing tube 14. Correspondingly, a through hole for the wire passing tube 14 to pass through is provided on the substrate 3.

[0034] The pressure-bearing seat 15 is fixedly connected to one side of the top surface of the base 1. The pressure-bearing seat 15 is used to carry the product to be film-sealed (such as a 96-well plate), and the pressure-bearing seat 15 is located directly below the film-pressing plate 10.

[0035] The working process of the heat-sealing device for the film-sealing equipment provided by the embodiment of the present utility model is as follows:

[0036] During heat-sealing, the heating plate 13 is powered on for heating, and then the lifting motor 6 works. The base plate 3 is driven to descend through the swing arm 7 and the connecting rod 8 until the film-pressing plate 10 presses the film on the product to be film-sealed (such as a 96-well plate) placed on the pressure-bearing seat 15, thereby realizing the film-sealing operation.

[0037] Embodiment 2

[0038] Compared with Embodiment 1, in this embodiment, the pressure-bearing seat 15 is slidably connected to the base 1 in the frame in the horizontal direction. For example, the pressure-bearing seat 15 is fixed on the slide rail 16 arranged in the horizontal direction, and a slider 17 cooperating with the slide rail 16 is fixedly installed on one side of the top surface of the base 1, so that the pressure-bearing seat 15 can slide along the slider 17 through the slide rail 16.

[0039] In addition, a transmission mechanism is also fixedly installed on the top surface of the base 1 of the frame, and the output end of the transmission mechanism is connected to the pressure-bearing seat 15 (specifically, the slide rail 16).

[0040] Specifically, the transmission mechanism includes a transmission motor 18, a transmission lead screw 19, and a transmission nut 20. The transmission motor 18 is fixed to the top surface of the base 1 by screws. Both ends of the transmission lead screw 19 in the length direction are fixed to the bearing seats arranged on one side of the top surface of the base 1 through bearings, and one end of the transmission lead screw 19 is also connected to the motor shaft of the transmission motor 18 through a coupling.

[0041] The transmission nut 20 is screwed onto the transmission lead screw 19, and the transmission nut 20 is fixedly connected to the slide rail 16 by screws. In this way, when the transmission motor 18 works, it can drive the transmission lead screw 19 to rotate, and then drive the transmission nut 20 to move along the axial direction of the transmission lead screw 19, thereby driving the slide rail 16 and the pressure-bearing seat 15 fixed to the slide rail 16 to move horizontally together.

[0042] Embodiment 3

[0043] In the technical solution disclosed in Document 1, film sealing is required for both the top and bottom surfaces of the workpiece. The upper film material is conveyed through the gap between the upper conveying carrier plate and the upper baffle, and the lower film material is conveyed through the gap between the lower conveying carrier plate and the lower baffle. The workpiece to be heat-sealed is located between the upper baffle and the lower baffle. In this heat-sealing method, although the upper and lower film materials can be supported to prevent the cut film materials from falling off, due to the presence of the upper and lower baffles, redundant parts will appear during film shearing. Therefore, laser trimming of the redundant film materials is required subsequently. Similarly, when only the top surface (or bottom surface) of the workpiece needs to be film-sealed, the upper baffle (or lower baffle) will also cause redundant parts in the film material, resulting in waste. In addition, in order to stably support the film material, it is usually necessary to configure the redundant part of the film material to have sufficient size so that the film material does not collapse in the center when it is laid flat on the upper baffle (or lower conveying carrier plate).

[0044] Therefore, compared with Embodiment 1 or 2, this embodiment further includes a suction cup 21 and a negative pressure generating device (not shown in the figure).

[0045] There are several suction cups 21, and the suction cups 21 are all fixedly connected to the pressure film plate 10. For example, two suction cups 21 are respectively arranged on both sides of the pressure film plate 21. In addition, the adsorption surface (i.e., the bottom surface) of the suction cup 21 protrudes from the bottom surface of the pressure film plate 10, and the suction cup 21 has a certain telescopic ability, such as a multi-layer suction cup, so as to adsorb the thin film and at the same time does not affect the pressure film plate 10 from thermally pressing the thin film.

[0046] Each suction cup 21 is connected to the negative pressure generating device through a pipeline (such as a hose, not shown in the figure). The negative pressure generating device is configured as an air pump, which is fixed on the top surface of the base 1 through a bracket. In addition, 4 pipe holes for the pipeline to pass through are opened on the top surfaces of the substrate 3 and the hot pressing frame 2.

[0047] With such a setting, the negative pressure generated by the suction cup 21 adsorbs the film material. It only needs to make the cutting size of the used film material slightly larger than the size of the product to be film-sealed (so that the redundant part of the film material can be adsorbed by the suction cup 21). And compared with Document 1, in this embodiment, when the film material is adsorbed by the suction cup 21, the film material will not collapse and deform.

[0048] The above has described the embodiments of the present invention in detail in conjunction with the accompanying drawings, but the present invention is not limited to the described embodiments. For those skilled in the art, without departing from the principles and spirits of the present invention, various changes, modifications, substitutions, and variations to these embodiments still fall within the protection scope of the present invention.

Claims

1. A heat sealing device for film sealing equipment, characterized in that: It includes a frame, a substrate, a film pressing plate, a heating plate, a pressure bearing seat and a lifting mechanism; the substrate is slidably connected relative to the frame along the height direction, the lifting mechanism is fixed on the frame, and its output end is connected to the substrate; the film pressing plate is located below the substrate and is slidably connected relative to the substrate along the height direction, and an elastic member is also connected between the film pressing plate and the substrate, and the elastic member is used to provide an elastic force to keep the film pressing plate and the substrate away from each other; the heating plate is fixed to one side of the top surface of the film pressing plate; the pressure bearing seat is fixedly connected to the frame and is located below the film pressing plate.

2. The heat sealing device for film sealing equipment according to claim 1, characterized in that: The lifting mechanism comprises a lifting motor, a swing arm and a connecting rod. The lifting motor is fixedly connected to the frame, the swing arm is fixedly connected to the motor shaft of the lifting motor, and two ends of the connecting rod are respectively hinged to the swing arm and the base plate.

3. The heat sealing device for film sealing equipment according to claim 1, characterized in that: The pressure bearing seat is slidably connected relative to the frame along a horizontal direction.

4. The heat sealing device for film sealing equipment according to claim 3, characterized in that: A transmission mechanism is also fixed on the frame, and an output end of the transmission mechanism is connected to the pressure bearing seat.

5. The heat sealing device for film sealing equipment according to claim 4, characterized in that: The transmission mechanism includes a transmission motor, a transmission screw and a transmission nut. The transmission motor is fixedly connected to the frame, the transmission screw is rotatably connected to the frame, and one end of the transmission screw is connected to the motor shaft of the transmission motor. The transmission nut is screwed on the transmission screw, and the transmission nut is fixedly connected relative to the pressure seat.

6. The heat sealing device for film sealing equipment according to claim 1, characterized in that: A wire threading tube is fixed on the top surface of the heating plate, and a through hole for the wire threading tube to pass through is opened on the base plate.

7. The heat sealing device for film sealing equipment according to claim 1, characterized in that: The elastic member is a helical compression spring.

8. The heat sealing device for film sealing equipment according to any one of claims 1 to 7, characterized in that: It also includes a suction cup and a negative pressure generating device; there are several suction cups and they are fixedly connected to the film pressing plate, and the adsorption surface of the suction cup protrudes from the bottom surface of the film pressing plate; the negative pressure generating device is fixedly connected to the frame, and each of the suction cups is connected to the negative pressure generating device through a pipeline.

9. The heat sealing device for film sealing equipment according to claim 8, characterized in that: The base plate is provided with a plurality of pipe penetration holes for the pipes to pass through.

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