lifting mechanism

Abstract

The application discloses a lifting mechanism, comprising a first plate, a second plate and a third plate arranged in sequence from top to bottom, a plurality of racks are connected between the first plate and the third plate, the plurality of racks respectively pass through the second plate, the second plate is fixedly connected with a motor, the second plate is rotationally connected with a synchronous shaft, the motor drives the synchronous shaft to rotate, a plurality of gears are arranged on the synchronous shaft, the gears are in mesh with the racks and one-to-one correspondence, a plurality of stand columns are further fixedly connected between the first plate and the third plate, the second plate is fixedly connected with a plurality of guide seats, the stand columns pass through the guide seats, and the stand columns correspond to the guide seats one-to-one.

Description

Technical Field

[0001] This utility model generally relates to the field of vacuum forming machines, and more particularly to a lifting mechanism. Background Technology

[0002] A vacuum forming machine, also known as a thermoforming machine, is a machine that uses heated and plasticized thermoplastic plastic rolls such as PVC, PE, PP, PET, and HIPS to form various shapes of high-end packaging boxes, frames, and other products. It utilizes the vacuum suction generated by a vacuum pump to mold heated and softened thermoplastic plastic sheets such as PVC and PET into various shapes of vacuum covers, blister trays, and other packaging materials.

[0003] The lifting mechanism drives the heating plate or mold to rise and fall. The lifting mechanism of the vacuum forming machine is the core transmission component that realizes the processes of heating, forming and demolding of plastic sheets.

[0004] In existing technologies, lifting mechanisms are generally equipped with a cylinder, but when producing large-area components, the heating plate is subjected to uneven force, and the edges of the components are prone to warping. Utility Model Content

[0005] In view of the above-mentioned defects or deficiencies in the prior art, it is desirable to provide a lifting mechanism with balanced force distribution.

[0006] In a first aspect, the lifting mechanism of this utility model includes a first plate, a second plate, and a third plate arranged sequentially from top to bottom. The first plate and the third plate are connected by multiple racks. The multiple racks pass through the second plate respectively. A motor is fixedly connected to the second plate, and a synchronous shaft is rotatably connected to the second plate. The motor drives the synchronous shaft to rotate. Multiple gears are arranged on the synchronous shaft. The gears mesh with the racks and correspond one-to-one. Multiple columns are also fixedly connected between the first plate and the third plate. Multiple guide seats are fixedly connected to the second plate. The columns pass through the guide seats, and the columns correspond one-to-one with the guide seats.

[0007] According to the technical solution provided in the embodiments of this application, the motor drives the synchronous shaft to rotate, the synchronous shaft drives multiple gears to rotate, and the multiple gears drive multiple racks to move synchronously, thereby driving the first plate to move up and down. By setting multiple racks, the first plate can be subjected to balanced force, avoiding warping of the edge of the component. Attached Figure Description

[0008] Other features, objects, and advantages of this application will become more apparent from the following detailed description of non-limiting embodiments with reference to the accompanying drawings:

[0009] Figure 1 This is a front view of the lifting mechanism according to an embodiment of the present utility model;

[0010] Figure 2 This is a right view of the lifting mechanism according to an embodiment of the present invention;

[0011] Figure 3 This is a bottom view of the lifting mechanism according to an embodiment of the present utility model;

[0012] Figure 4 This is a perspective view of the lifting mechanism according to an embodiment of the present utility model;

[0013] Figure 5 For along Figure 3 A cross-sectional view along line AA in the middle. Detailed Implementation

[0014] The present application will now be described in further detail with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the relevant utility model and not intended to limit the scope of the utility model. Furthermore, it should be noted that, for ease of description, only the parts relevant to the utility model are shown in the accompanying drawings.

[0015] It should be noted that, unless otherwise specified, the embodiments and features described in this application can be combined with each other. This application will now be described in detail with reference to the accompanying drawings and embodiments.

[0016] Please refer to Figures 1-5 The lifting mechanism of this utility model includes a first plate 100, a second plate 200, and a third plate 300 arranged sequentially from top to bottom. The first plate 100 and the third plate 300 are connected by multiple racks 400. The racks 400 pass through the second plate 200. The second plate 200 is fixedly connected to a motor 210 and rotatably connected to a synchronous shaft 220. The motor 210 drives the synchronous shaft 220 to rotate. Multiple gears 221 are arranged on the synchronous shaft 220. The gears 221 mesh with the racks 400 and correspond one-to-one. Multiple columns 500 are also fixedly connected between the first plate 100 and the third plate 300. Multiple guide seats 230 are fixedly connected to the second plate 200. The columns 500 pass through the guide seats 230 and correspond one-to-one with the guide seats 230.

[0017] In this embodiment of the invention, a first plate 100, a second plate 200, and a third plate 300 are arranged sequentially from top to bottom. The first plate 100 is equipped with a heating plate, and the second plate 200 is fixed to the frame. The third plate 300 can fix one end of the rack 400 and the column 500, ensuring the stability of the rack 400 and the column 500, and also supports the first plate 100 through the rack 400 and the column 500. A motor 210 is fixedly connected to the second plate 200. The motor 210 can drive the synchronous shaft 220 to rotate, which in turn drives multiple gears 221 to rotate. These gears 221 then drive multiple racks 400 to move synchronously, thereby causing the first plate 100 to move up and down. The motor 210 can drive the synchronous shaft 220 to rotate via a reducer, ensuring the stability of the synchronous shaft 220's rotation. The rack 400 and gears 221 can mesh with helical teeth, resulting in uniform load distribution, significantly reduced impact and vibration, and smoother transmission. By setting multiple racks 400, the first plate 100 can be subjected to balanced force, thus preventing the edges of the components from warping.

[0018] Multiple columns 500 are fixedly connected between the first plate 100 and the third plate 300. Multiple guide seats 230 are fixedly connected to the second plate 200. The columns 500 pass through the guide seats 230, which guide the movement of the columns 500, ensuring that the movement of the columns 500 is more stable, which in turn ensures the stability of the lifting and lowering movement of the first plate 100.

[0019] Furthermore, four racks 400 are provided, and the four racks 400 together support the first plate 100.

[0020] In this embodiment of the invention, four racks 400 are provided, and the four racks 400 together support the first plate 100, so that the first plate 100 can be subjected to balanced force and avoid warping of the component edges. It is possible, but not limited to, that the contact positions of the four racks 400 with the first plate 100 can be arranged at equal intervals along the horizontal center line of the first plate 100.

[0021] Furthermore, one end of the rack 400 is detachably fixedly connected to the first plate 100, and the other end of the rack 400 is detachably fixedly connected to the third plate 300.

[0022] In an embodiment of this utility model, when the rack 400 wears out, it can be disassembled and replaced, reducing maintenance costs.

[0023] Furthermore, one end of the rack 400 is screwed with a first connecting seat 410, which is detachably fixed to the first plate 100.

[0024] In the embodiments of this utility model, the rack 400 is detachably fixedly connected to the first plate 100 through the first connecting seat 410, which ensures the reliability of the connection between the rack 400 and the first plate 100 and facilitates the fixed connection between the rack 400 and the first plate 100.

[0025] Furthermore, the other end of the rack 400 is screwed with a second connecting seat 420, which is detachably fixed to the third plate 300.

[0026] In the embodiments of this utility model, the rack 400 is detachably fixedly connected to the third plate 300 through the second connecting seat 420, which ensures the reliability of the connection between the rack 400 and the third plate 300 and facilitates the fixed connection between the rack 400 and the third plate 300.

[0027] Furthermore, a first bearing 231 is provided at the end of the guide seat 230 away from the second plate 200, and a first through hole is provided in the second plate 200 for the guide seat 230 to pass through. A second bearing 240 is fixedly connected to the first through hole, and the first bearing 231 and the second bearing 240 are respectively sleeved on the column 500.

[0028] In this embodiment of the invention, by providing a first bearing 231 and a second bearing 240, the friction between the column 500 and the guide seat 230 is reduced. Furthermore, the first bearing 231 and the second bearing 240 also ensure the stability of the column 500's movement.

[0029] Furthermore, the second plate 200 is fixedly connected to multiple sets of opposing and spaced first support plates 250 and second support plates 260. A gear 221 and a roller 270 are rotatably connected between a first support plate 250 and a second support plate 260, respectively, and a rack 400 passes between the roller 270 and the gear 221.

[0030] In this embodiment of the invention, the rack 400 passes between the roller 270 and the gear 221. The roller 270 can restrain the rack 400, preventing it from disengaging from the gear 221 and ensuring the reliability of the meshing between the rack 400 and the gear 221. The gear 221 and the roller 270 are located between the first support plate 250 and the second support plate 260. The first support plate 250 and the second support plate 260 can jointly support the gear 221 and the roller 270, ensuring the stability of the rotation of the gear 221 and the roller 270.

[0031] Furthermore, the rolling surface of the roller 270 is provided with a limiting groove, and part of the rack 400 is inserted into the limiting groove.

[0032] In the embodiments of this utility model, by setting a limiting groove, the axial offset of the rack 400 along the roller 270 is reduced, and wear caused by contact between the rack 400 and the first support plate 250 or the second support plate 260 is avoided, thereby improving the reliability of the rack 400.

[0033] Furthermore, it also includes multiple cylinders 600, each cylinder 600 including a cylinder body 610 and a piston rod 620. The cylinder body 610 is fixedly connected to the second plate 200, and one end of the piston rod 620 extending out of the cylinder body 610 is fixedly connected to the first plate 100.

[0034] In an embodiment of this utility model, the extension and retraction of the piston rod 620 assists in the lifting and lowering of the first plate 100, thereby reducing the load on the motor 210.

[0035] Furthermore, the third plate 300 is provided with a second through hole 310 for the cylinder 610 to pass through at the position opposite to the cylinder 610.

[0036] In an embodiment of this utility model, during the lifting and lowering of the first plate 100, the third plate 300 will also lift and lower along with the first plate 100. By providing the second through hole 310, the cylinder 610 can be avoided, preventing the cylinder 610 from contacting the third plate 300.

[0037] The above description is merely a preferred embodiment of this application and an explanation of the technical principles employed. Those skilled in the art should understand that the scope of the utility model involved in this application is not limited to the technical solutions formed by specific combinations of the above-described technical features, but should also cover other technical solutions formed by arbitrary combinations of the above-described technical features or their equivalents without departing from the inventive concept. For example, technical solutions formed by substituting the above features with (but not limited to) technical features with similar functions disclosed in this application.

Claims

1. A lifting mechanism, characterized in that, The system includes a first plate, a second plate, and a third plate arranged sequentially from top to bottom. The first plate and the third plate are connected by multiple racks. The racks pass through the second plate. A motor is fixedly connected to the second plate, and a synchronous shaft is rotatably connected to the second plate. The motor drives the synchronous shaft to rotate. Multiple gears are arranged on the synchronous shaft, and the gears mesh with the racks and correspond one-to-one. Multiple columns are also fixedly connected between the first plate and the third plate. Multiple guide seats are fixedly connected to the second plate, and the columns pass through the guide seats. Each column corresponds to one guide seat.

2. The lifting mechanism according to claim 1, characterized in that, The rack has four teeth, and the four racks together support the first plate.

3. The lifting mechanism according to claim 1, characterized in that, One end of the rack is detachably and fixedly connected to the first plate, and the other end of the rack is detachably and fixedly connected to the third plate.

4. The lifting mechanism according to claim 3, characterized in that, One end of the rack is screwed to a first connecting seat, which is detachably fixed to the first plate.

5. The lifting mechanism according to claim 3, characterized in that, The other end of the rack is screwed to a second connecting seat, which is detachably fixed to the third plate.

6. The lifting mechanism according to claim 1, characterized in that, The guide seat is provided with a first bearing at the end away from the second plate. The second plate is provided with a first through hole for the guide seat to pass through. A second bearing is fixedly connected to the first through hole. The first bearing and the second bearing are respectively sleeved on the column.

7. The lifting mechanism according to claim 1, characterized in that, The second plate is fixedly connected to multiple sets of opposing and spaced first and second support plates. A gear and a roller are rotatably connected between a first support plate and a second support plate, respectively, and the rack passes between the roller and the gear.

8. The lifting mechanism according to claim 7, characterized in that, The rolling surface of the roller is provided with a limiting groove, and the rack portion is inserted into the limiting groove.

9. The lifting mechanism according to claim 1, characterized in that, It also includes multiple cylinders, each cylinder comprising a cylinder body and a piston rod. The cylinder body is fixedly connected to the second plate, and one end of the piston rod extending out of the cylinder body is fixedly connected to the first plate.

10. The lifting mechanism according to claim 9, characterized in that, The third plate has a second through hole at the position opposite to the cylinder body, allowing the cylinder body to pass through.

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