Automatic cabin door lifting structure

Abstract

The utility model discloses an automatic cabin door lifting structure which is used for a vacuum freeze dryer and comprises a double-path guide rail module and a driving module. A cabin door is movably arranged on the double-path guide rail module and can move on the double-path guide rail module; the driving module is connected with the cabin door and drives the cabin door to move on the double-path guide rail module. According to the automatic lifting structure of the cabin door, even if the sealing ring is hardened due to cooling, the cabin door can be tightly attached to the sealing ring, and the sealing effect is good.

Description

Technical Field

[0001] This utility model relates to the technical field of door lifting in a vacuum freeze dryer, and particularly to an automatic door lifting structure. Background Technology

[0002] Existing vacuum freeze dryers use a parallel up-and-down moving structure for the door, such as a linear guide rail with a lead screw drive, relying on the elastic deformation of a silicone sealing ring to achieve a seal. Alternatively, a hinged mechanism is used to open and close the door. However, when the plates are pre-cooled to -60°C, the silicone sealing ring hardens due to the low temperature, easily causing gaps in the contact between the door and the sealing ring, leading to seal failure. Furthermore, the door can only move vertically along a fixed trajectory, requiring hard friction between the material door and the sealing ring to achieve a seal. Existing improvements, such as heating the sealing ring, can alleviate the low-temperature hardening problem, but they increase the complexity of the temperature control system and the risk of thermal damage to the sealing ring. Utility Model Content

[0003] According to an embodiment of the present invention, an automatic door lifting structure is provided for a vacuum freeze dryer, comprising: a dual-path guide rail module and a drive module; a door is movably disposed on the dual-path guide rail module, and the door can move on the dual-path guide rail module; the drive module is connected to the door, and the drive module drives the door to move on the dual-path guide rail module.

[0004] Furthermore, the dual-path guide rail module includes:

[0005] The first path guide rail is a linear guide rail;

[0006] The second path guide rail is connected to the first guide rail, and the second path guide rail is an arc-shaped guide rail;

[0007] The sliding member is movably disposed in the first path guide rail and the second path guide rail, and can slide in the first path guide rail and the second path guide rail; the sliding member is connected to the hatch, and when the sliding member slides, it drives the hatch to move together.

[0008] Furthermore, the curvature range of the second path guide rail is 85 degrees to 90 degrees.

[0009] Furthermore, the drive module includes: a first drive mechanism and a second drive mechanism;

[0010] The first drive mechanism is connected to the second drive mechanism, and the second drive mechanism is connected to the sliding member;

[0011] The first driving mechanism drives the second driving mechanism and the sliding member to move along the first path guide rail; the second driving mechanism drives the sliding member to move along the second path guide rail.

[0012] Furthermore, the first drive mechanism includes a first power source and a lead screw, with the output end of the first power source connected to one end of the lead screw.

[0013] Furthermore, the second drive mechanism includes a second power source, which is mounted on the lead screw.

[0014] Furthermore, the power output directions of the first power source and the second power source are perpendicular.

[0015] Furthermore, both the first and second power sources are servo motors.

[0016] According to the automatic door lifting structure of this utility model embodiment, even if the sealing ring hardens due to cold, the door and the sealing ring can still be tightly fitted, resulting in a good sealing effect.

[0017] It should be understood that both the foregoing general description and the following detailed description are exemplary and intended to provide further illustration of the claimed technology. Attached Figure Description

[0018] Figure 1 This is a schematic diagram of the automatic door lifting structure according to an embodiment of the present utility model;

[0019] Figure 2 This is a schematic diagram of the dual-path guide rail module of the automatic door lifting structure according to an embodiment of the present utility model. Detailed Implementation

[0020] The preferred embodiments of the present invention will be described in detail below with reference to the accompanying drawings, further illustrating the present invention.

[0021] First, combine Figure 1 , Figure 2 The automatic door lifting structure according to the embodiments of the present utility model is described, and its application scenarios are very wide.

[0022] like Figure 1 As shown, the automatic lifting structure of the hatch 3 in this embodiment of the present invention is used in a vacuum freeze dryer and includes: a dual-path guide rail module 1 and a drive module 2.

[0023] Specifically, such as Figure 1 As shown, a hatch 3 is movably mounted on the dual-path guide rail module 1, and the hatch 3 can move on the dual-path guide rail module 1; the drive module 2 is connected to the hatch 3, and the drive module 2 drives the hatch 3 to move on the dual-path guide rail module 1.

[0024] Furthermore, such as Figure 2As shown, the dual-path guide rail module 1 includes: a first path guide rail 11, a second path guide rail 12, and a slider 13; the first path guide rail 11 is a linear guide rail; the second path guide rail 12 is connected to the first guide rail and is an arc-shaped guide rail; the slider 13 is movably disposed in the first path guide rail 11 and the second path guide rail 12, and the slider 13 can slide in the first path guide rail 11 and the second path guide rail 12; the slider 13 is connected to the hatch 3, and when the slider 13 slides, it drives the hatch 3 to move together. In this embodiment, the slider 13 uses a bearing, which makes sliding in the first path guide rail 11 and the second path guide rail 12 smoother.

[0025] Furthermore, the curvature range of the second path guide rail 12 is 85 degrees to 90 degrees. In this embodiment, through the synergistic effect of the dual path guide rails and the dual drive mechanism, the hatch 3 presses the sealing ring along the arc-shaped path at the end of the closing process. Even if the sealing ring hardens at a low temperature of -60°C, it can still achieve progressive fitting through trajectory control, avoiding the hard friction and gaps caused by traditional vertical lifting, and significantly improving the reliability of vacuum sealing.

[0026] Furthermore, such as Figure 1 As shown, the drive module 2 includes: a first drive mechanism 21 and a second drive mechanism 22; the first drive mechanism 21 is connected to the second drive mechanism 22, and the second drive mechanism 22 is connected to the slider 13; the first drive mechanism 21 drives the second drive mechanism 22 and the slider 13 to move along the first path guide rail 11; the second drive mechanism 22 drives the slider 13 to move along the second path guide rail 12.

[0027] Furthermore, such as Figure 1 As shown, the first drive mechanism 21 includes a first power source 211 and a first lead screw 212. The output end of the first power source 211 is connected to one end of the first lead screw 212. When the first power source 211 rotates, it will drive the first lead screw 212 to rotate together.

[0028] Furthermore, such as Figure 1 As shown, the second drive mechanism 22 includes a second power source 221, which is mounted on the first lead screw 212. When the hatch 3 moves up and down, the second power source 221 does not operate; it is driven only by the first power source 211. The hatch moves along the first lead screw 212 to a predetermined position. Because the second power source 221 is mounted on the first lead screw 212, only the first power source 211 needs to operate during lifting, and the second power source 221 follows suit. During clamping, the second power source 221 independently drives the second lead screw 222, simplifying the transmission chain and reducing energy consumption.

[0029] Furthermore, such as Figure 1As shown, the power output directions of the first power source 211 and the second power source 221 are perpendicular. In this embodiment, the first power source 211 is used to drive the second power source 221, the sliding member 13, and the door 3 connected to the sliding member 13 to slide synchronously upward or downward along the first path guide rail 11; the second power source 221 is used to drive the door 3 to press inward, so that the door 3 is finally tightly fitted with the sealing ring on the vacuum freeze dryer, preventing air leakage when the vacuum freeze dryer is evacuated. In this embodiment, the power output end of the second power source 221 is connected to the second lead screw 222. When the second power source 221 moves, it drives the second lead screw 222 to rotate. At the same time, a connector 223 connected to the door 3 is also sleeved on the second lead screw 222. The second power source 221 can drive the second lead screw 222 to rotate in both directions, thereby realizing the action of pressing the door 3 inward or pushing it outward.

[0030] Furthermore, both the first power source 211 and the second power source 221 are servo motors, which can precisely control the lifting position and clamping force of the hatch 3 to avoid overpressure damage to the sealing ring.

[0031] When closing the hatch 3, the first power source 211 rotates, driving the first lead screw 212 to rotate. Since the second power source 221 is mounted on the first lead screw 212, the second power source 221 will be moved upward. At the same time, the second power source 221 is connected to the sliding member 13, which is in turn connected to the hatch 3. Therefore, the hatch 3 will eventually move upward along with the second power source 221. When it reaches the preset position, the second power source 221 starts to work, and the sliding member 13 moves from the first path guide rail 11 into the second path guide rail 12. The second power source 221 drives the hatch 3 to press inward, so that the hatch 3 finally fits tightly against the sealing ring on the vacuum freeze dryer, completing the closing action.

[0032] When the hatch 3 is opened, the second power source 221 moves first, the slider 13 moves out from the second path guide rail 12, and the hatch 3 is pushed open by the second power source 221. Then, the first power source 211 lowers it to the preset position to complete the opening action.

[0033] Above, refer to Figure 1 , Figure 2 The present invention describes an automatic door lifting structure according to an embodiment of the present invention, which can achieve a tight fit between the door and the sealing ring even if the sealing ring hardens due to cold, resulting in a good sealing effect.

[0034] It should be noted that, in this specification, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such process, method, article, or apparatus. Unless otherwise specified, an element defined by the phrase "comprising..." does not exclude the presence of additional identical elements in the process, method, article, or apparatus that includes that element.

[0035] Although the present invention has been described in detail through the above preferred embodiments, it should be understood that the above description should not be considered as a limitation of the present invention. Various modifications and substitutions to the present invention will be apparent to those skilled in the art after reading the above content. Therefore, the scope of protection of the present invention should be defined by the appended claims.

Claims

1. An automatic door lifting structure for a vacuum freeze dryer, characterized in that, It includes: a dual-path guide rail module and a drive module; the hatch is movably mounted on the dual-path guide rail module and can move on the dual-path guide rail module; the drive module is connected to the hatch and drives the hatch to move on the dual-path guide rail module.

2. The automatic door lifting structure as described in claim 1, characterized in that, The dual-path guide rail module includes: The first path guide rail is a linear guide rail; The second path guide rail is connected to the first path guide rail, and the second path guide rail is an arc-shaped guide rail; A sliding member is movably disposed in the first path guide rail and the second path guide rail, and the sliding member can slide in the first path guide rail and the second path guide rail; the sliding member is connected to the hatch, and the sliding member drives the hatch to move together when it slides.

3. The automatic door lifting structure as described in claim 2, characterized in that, The curvature range of the second path guide rail is 85 degrees to 90 degrees.

4. The automatic door lifting structure as described in claim 2, characterized in that, The drive module includes: a first drive mechanism and a second drive mechanism; The first driving mechanism is connected to the second driving mechanism, and the second driving mechanism is connected to the sliding member; The first driving mechanism drives the second driving mechanism and the slider to move along the first path guide rail; the second driving mechanism drives the slider to move along the second path guide rail.

5. The automatic door lifting structure as described in claim 4, characterized in that, The first drive mechanism includes a first power source and a lead screw, and the output end of the first power source is connected to one end of the lead screw.

6. The automatic door lifting structure as described in claim 5, characterized in that, The second drive mechanism includes a second power source, which is sleeved on the lead screw.

7. The automatic door lifting structure as described in claim 6, characterized in that, The power output directions of the first power source and the second power source are perpendicular.

8. The automatic door lifting structure as described in claim 6, characterized in that, Both the first power source and the second power source are servo motors.

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