Vacuum drying device

Abstract

The invention provides a vacuum drying device, and belongs to the technical field of machinery. The sealing door mechanism solves the problem that an existing sealing door mechanism is poor in sealing performance. The vacuum drying device comprises a groove body, a cover plate, two translation guide rails and a translation driving part, the height of the two translation guide rails is flush with the top of the groove body, the vacuum drying device further comprises two lifting guide rails horizontally arranged along an edge opening of the groove body and a lifting driving part capable of driving the two lifting guide rails to ascend and descend, after the lifting driving piece drives the two lifting guide rails to ascend, the two lifting guide rails and the two translation guide rails can be located on the same straight line, the cover plate is arranged between the two translation guide rails, and the two sides of the upper surface of the cover plate are connected with sliding parts arranged on the two translation guide rails in a sliding mode. And the translation driving piece can drive the cover plate to perform reciprocating translation between the two translation guide rails and the two lifting guide rails in the extension direction of the translation guide rails. The vacuum drying device has the advantage of being good in sealing performance.

Description

Technical Field

[0001] This invention belongs to the field of mechanical technology and relates to a vacuum drying device. Background Technology

[0002] With the continuous development of technology, the cleanliness requirements for components of various products are becoming increasingly stringent. Ultrasonic cleaning is one of the cleaning methods with high efficiency and good cleaning effect. After ultrasonic cleaning, some liquid droplets inevitably remain on the surface of the components, requiring drying. Vacuum drying is one method that involves placing the components in a drying tank for drying. Because a vacuum needs to be created inside the drying tank during drying, the sealing requirements for the drying tank are very high.

[0003] For example, a lifting and sealing door mechanism for a vacuum cleaning equipment has been designed and a Chinese patent has been applied for, with application number 202020348975.4 and publication number CN211990152U. This lifting and sealing door mechanism for the vacuum cleaning equipment includes a cleaning tank, a mounting frame fixedly connected to the side of the cleaning tank, a lifting cylinder fixedly connected to the surface of the mounting frame, a hinge mechanism fixedly connected to the free end of the lifting cylinder, a hinge frame fixedly connected to the free end of the lifting cylinder, a top-tightening wheel fixedly connected to the bottom of the hinge frame, a fixed shaft passing through the surface of the hinge frame, a spherical bearing sleeved on the surface of the fixed shaft, a cover plate fixedly connected to the surface of the spherical bearing, and a locking mechanism fixedly connected to the bottom side of the cleaning tank. The locking mechanism includes a locking cylinder fixedly connected to the bottom side of the cleaning tank, and a locking top rod fixedly connected to the free end of the locking cylinder.

[0004] When the lifting sealing door mechanism of the vacuum cleaning equipment closes the opening of the cleaning tank, the lifting cylinder first drives the cover plate to move down. When the cover plate moves down to be directly opposite the opening of the tank, the locking cylinder pushes the locking rod up, which acts on the tightening wheel to make the cover plate close to the opening of the cleaning tank.

[0005] However, in actual use, a sealing ring is often installed between the cover plate and the groove on the side of the cleaning tank to ensure sealing. To prevent the sealing ring from being deformed or even worn by the cover plate or the groove edge during the lifting process driven by the lifting cylinder relative to the groove opening, a gap must be left between the cover plate and the groove opening in the horizontal direction during the lifting process, and this gap must be greater than the thickness of the sealing ring. This gap means that when the cover plate moves down to face the groove opening, the two sides of the sealing ring cannot fit well against the groove opening and the cover plate at the same time, leaving a sealing gap. Even if the locking rod acts on the tightening wheel to drive the cover plate closer to the groove opening, only one point on the circumference of the cover plate and the groove edge of the groove press the sealing ring together, and the sealing of other positions outside the groove opening cannot be guaranteed. Summary of the Invention

[0006] The purpose of this invention is to address the aforementioned problems in the prior art by proposing a vacuum drying device that solves the problem of poor sealing performance in existing sealing door mechanisms.

[0007] The objective of this invention can be achieved through the following technical solutions: A vacuum drying device includes a tank, a cover plate horizontally covering the tank, two translational guide rails horizontally fixed to the side of the tank, and a translational drive component. The height of the two translational guide rails is flush with the top of the tank. The device further includes two lifting guide rails horizontally arranged along the edge of the tank and a lifting drive component capable of driving the two lifting guide rails to rise and fall. After the lifting drive component drives the two lifting guide rails to rise, the two lifting guide rails are aligned with the two translational guide rails. The cover plate is disposed between the two translational guide rails, and sliding portions slidably disposed on the two translational guide rails are connected to both sides of the upper surface of the cover plate. The translational drive component drives the cover plate to reciprocate between the two translational guide rails and between the two lifting guide rails along the extension direction of the translational guide rails.

[0008] In use, the translation drive moves the cover plate along the translation guide rail away from the slot opening, allowing the workpiece to be dried to be placed into the slot. The lifting drive moves the two lifting guide rails upward until they are aligned with the translation guide rails, making the lifting guide rails an extension of the translation guide rails. The translation drive then moves the cover plate towards the slot opening, and the sliding part moves along the translation guide rails to the lifting guide rails until the cover plate is directly above the slot opening, completely covering it. The lifting drive then moves the lifting guide rails downward, allowing the cover plate to move downward relative to the translation drive, thus placing the cover plate flat on top of the slot and sealing the slot opening.

[0009] In this vacuum drying device, in addition to the fixed translational guide rails, a pair of independent, liftable lifting guide rails are added. The lifting of these two guide rails horizontally positions the cover plate at the top of the tank opening, ensuring more comprehensive circumferential contact between the cover plate and the tank, thus guaranteeing a tight seal. The cover plate is positioned between the two translational guide rails and utilizes a sliding part on its upper surface for sliding engagement with the guide rails. This not only prevents the sliding part's position from affecting the contact between the cover plate and the tank, but also, through the two translational and two lifting guide rails, provides auxiliary limiting on both sides of the cover plate, ensuring stability during movement. It also protects the sides of the cover plate from impacts and accidental jamming of other components, further ensuring the seal between the cover plate and the tank.

[0010] In the aforementioned vacuum drying device, a plate-shaped base is horizontally arranged below the lifting guide rail for fixing to a wall or support. Several cylindrical guide sleeves are vertically inserted and fixed on the base plate. Several guide rods are vertically fixed to the lower side of the lifting guide rail, each guide rod correspondingly inserted into one of the guide sleeves. The lifting drive component is fixed to the base plate, and its output end is connected to the lifting guide rail for transmission. The cooperation of the guide sleeves and guide rods guides the lifting process of the lifting guide rail, ensuring smooth lifting of the cover plate and thus guaranteeing sealing.

[0011] In the aforementioned vacuum drying device, the lower ends of each guide rod protrude through corresponding guide sleeves, and the lower ends of several guide rods are fixed to a horizontally arranged, elongated synchronous rod. By connecting several guide rods simultaneously through a synchronous rod, the synchronicity of the lifting and lowering of the guide rods can be ensured, thereby guaranteeing the stability of the lifting guide rail.

[0012] In the aforementioned vacuum drying device, a mounting bracket is fixed to the top of the cover plate. The top of the mounting bracket has a downwardly recessed notch. A circular mounting groove is formed on the outer side of the outer end of the output shaft of the translational drive component. The outer end of the output shaft of the translational drive component passes through the notch, and the two side walls of the notch are respectively engaged in the mounting groove. The output shaft of the translational drive component can move vertically within the notch. The mounting bracket and the output shaft of the translational drive component are axially fixed by engaging the side walls of the mounting bracket with the circular mounting groove. The notch allows the output shaft of the translational drive component to move vertically relative to the mounting bracket, achieving axial fixation while allowing circumferential movement. The overall structure is relatively simple and easy to manufacture.

[0013] In the aforementioned vacuum drying apparatus, the sliding part is a pulley rotatably connected to the cover plate. The pulley can roll smoothly on the translation guide rail, resulting in less friction and smoother translation of the cover plate.

[0014] In another scenario, in the aforementioned vacuum drying apparatus, the sliding part is a slider. Depending on the requirements, the sliding part can also be a slider that can cooperate with a translational guide rail, ensuring relative stability of the position after cooperation.

[0015] In the aforementioned vacuum drying device, the device further includes a mounting plate horizontally fixed to the upper side of the tank, and the translational guide rails horizontally fixed to opposite sides on the upper side of the mounting plate. By using the mounting plate, the translational guide rails and the lifting guide rails are separated and can be connected to form a complete track during the upward movement of the lifting guide rails. The structure is relatively simple and easy to assemble. Compared with existing technologies, this vacuum drying device has the following advantages: 1. In addition to the fixed translation guide rail, a pair of independent lifting guide rails are added. With the circumferential movement gap between the top of the cover plate and the translation drive component, the cover plate is placed horizontally at the top of the slot by the lifting of the two lifting guide rails, so that the cover plate and the slot are more fully in contact in the circumferential direction, thereby ensuring the sealing between the cover plate and the slot.

[0016] 2. The cover plate is positioned between two translational guide rails and two lifting guide rails, and its upper surface has a sliding part that slides with the translational guide rails. This not only prevents the position of the sliding part from affecting the sealing between the cover plate and the tank, but also uses the two translational guide rails and two lifting guide rails to provide auxiliary limit on both sides of the cover plate, ensuring the stability of the cover plate during movement, and to protect the side of the cover plate from bumps and accidental jamming of other parts, further ensuring the sealing performance of the cover plate and the tank. Attached Figure Description

[0017] Figure 1 This is a schematic diagram of the structure of this vacuum drying device.

[0018] Figure 2 yes Figure 1 A magnified view of a portion of point A in the middle.

[0019] Figure 3 This is a cross-sectional view of the lifting guide rail.

[0020] In the figure, 1 is the drying tank; 1a is the tank opening; 1b is the tank body; 1c is the mounting plate; 2 is the cover plate; 3 is the translation guide rail; 4 is the translation drive component; 4a is the output shaft; 4b is the mounting groove; 5 is the sliding part; 6 is the lifting guide rail; 7 is the lifting drive component; 8 is the base plate; 9 is the guide sleeve; 10 is the guide rod; 11 is the synchronizing rod; 12 is the mounting bracket; and 12a is the notch. Detailed Implementation

[0021] The following are specific embodiments of the present invention, which are described in conjunction with the accompanying drawings. However, the present invention is not limited to these embodiments.

[0022] like Figure 1As shown, this vacuum drying device includes a drying tank 1 and a plate-shaped cover 2 horizontally positioned above the drying tank 1. The drying tank 1 includes a tank body 1b with a groove 1a at the top and a plate-shaped mounting plate 1c horizontally fixed to one side of the top of the tank body 1b. Two straight-bar-shaped translation guide rails 3 are fixed to the upper side of the mounting plate 1c. Both translation guide rails 3 are arranged in the left-right direction and are fixed to the front and rear sides of the upper side of the mounting plate 1c. The cover 2 is disposed between the two translation guide rails 3. An annular sealing ring is fixed to the lower side of the cover 2. Sliding parts 5 are connected to both sides of the upper surface of the cover 2, and the sliding parts 5 are correspondingly slidably disposed on the upper side of the translation guide rails 3. This vacuum drying device also includes a translation drive component 4 that can drive the cover 2 to move left and right along the translation guide rails 3. In this embodiment, the sliding part 5 is a pulley rotatably connected to the cover plate 2. There are four pulleys, arranged in pairs, with the two pairs of pulleys corresponding to the upper side of the two translation guide rails 3. Here, as needed, the sliding part 5 can be a slider that can cooperate with the translation guide rail 3. The translation drive 4 is a cylinder or a hydraulic cylinder.

[0023] like Figure 2 As shown, a mounting bracket 12 is fixed to the top of the cover plate 2. The top of the mounting bracket 12 has a downward recessed notch 12a. The width of the notch 12a is the same from top to bottom. A recessed annular mounting groove 4b is provided on the outer side of the outer end of the output shaft 4a of the translation drive component 4. The outer end of the output shaft 4a of the translation drive component 4 passes through the notch 12a and the two side walls of the notch 12a are respectively inserted into the mounting groove 4b.

[0024] like Figure 3 As shown, straight lifting guide rails 6 are horizontally arranged on both the front and rear sides of the tank 1b. The lifting guide rails 6 are arranged in the same direction as the translation guide rails 3, both in the left-right direction. Below the lifting guide rails 6, a plate-shaped base plate 8 is horizontally arranged for fixing to the wall or other supports in the cleaning production line used by this vacuum drying device. Several cylindrical guide sleeves 9 are vertically inserted and fixed on the base plate 8, and the guide sleeves 9 are spaced apart in the left-right direction. Several cylindrical guide rods 10 are vertically fixed on the lower side of the lifting guide rails 6, and the guide rods 10 are correspondingly inserted into the guide sleeves 9. A lifting drive component 7 is fixed on the base plate 8. The output end of the lifting drive component 7 is fixed to the lower side of the lifting guide rails 6 and can drive the lifting guide rails 6 to rise and fall. When the lifting guide rails 6 rise, they can be flush with the translation guide rails 3, realizing that the lifting guide rails 6 are a continuation of the translation guide rails 3 in the extension direction. In this embodiment, the lower ends of each guide rod 10 protrude through the corresponding guide sleeve 9, and the lower ends of several guide rods 10 are fixed to a horizontally arranged, elongated synchronous rod 11.

[0025] When the vacuum drying device needs to dry the workpiece, the translation drive 4 drives the cover plate 2 along the translation guide rail 3 away from the slot 1a, thus opening the slot 1a. The workpiece to be dried is placed into the drying tank 1. The lifting drive 7 drives the two lifting guide rails 6 to rise until they are directly opposite the translation guide rail 3, i.e., the lifting guide rail 6 becomes a continuation of the translation guide rail 3. The translation drive 4 drives the cover plate 2 to translate towards the slot 1a, and the sliding part 5 moves along the upper side of the translation guide rail 3 to the upper side of the lifting guide rail 6 until the cover plate 2 is directly above the slot 1a, completely blocking the slot 1a. The lifting drive 7 drives the lifting guide rail 6 to descend below the top surface of the drying tank 1. Because of the cooperation between the output shaft 4a of the translation drive 4 and the recess 12a of the mounting bracket 12, the translation drive 4 can remain stationary, while the cover plate 2 can move down relative to the translation drive 4, thereby placing the cover plate 2 flat on the top of the drying tank 1 and sealing the slot 1a. During the vacuuming process in the drying tank 1, the cover plate 2, which is not limited by the translation drive 4 and the lifting guide rail 6, will be pressed tightly against the slot 1a of the tank body 1b under the action of external atmospheric pressure, further improving the sealing performance.

[0026] After drying, the lifting drive 7 drives the lifting guide rail 6 to rise to be flush with the translation guide rail 3. The cover plate 2 is lifted upward by the upward force applied to the sliding part 5. The side walls of the mounting bracket 12 located on both sides of the notch 12a are inserted into the mounting groove 4b. The translation drive 4 can drive the cover plate 2 to move away from the groove 1a. After the groove 1a is opened, the dried workpiece can be taken out.

[0027] The specific embodiments described herein are merely illustrative of the spirit of the invention. Those skilled in the art to which this invention pertains may make various modifications or additions to the described specific embodiments or use similar methods to substitute them, without departing from the spirit of the invention or exceeding the scope defined by the appended claims.

Claims

1. A vacuum drying apparatus, comprising a tank (1b), a cover plate (2) horizontally covering the tank (1b), two translation guide rails (3) horizontally fixed to the side of the tank (1b), and a translation drive component (4), wherein the height of the two translation guide rails (3) is flush with the top of the tank (1b), characterized in that, The vacuum drying device also includes two lifting guide rails (6) horizontally arranged along the edge of the tank (1b) and a lifting drive (7) that can drive the two lifting guide rails (6) to rise and fall. After the lifting drive (7) drives the two lifting guide rails (6) to rise, the two lifting guide rails (6) can be on the same straight line as the two translation guide rails (3). The cover plate (2) is arranged between the two translation guide rails (3). The upper surface of the cover plate (2) is connected to sliding parts (5) that are slidably arranged on the two translation guide rails (3) on both sides. The translation drive (4) can drive the cover plate (2) to reciprocate between the two translation guide rails (3) and between the two lifting guide rails (6) along the extension direction of the translation guide rails (3).

2. The vacuum drying apparatus according to claim 1, characterized in that, A plate-shaped base plate (8) for fixing to a wall or bracket is horizontally arranged below the lifting guide rail (6). Several cylindrical guide sleeves (9) are vertically inserted and fixed on the base plate (8). Several guide rods (10) are vertically fixed on the lower side of the lifting guide rail (6). The guide rods (10) are inserted into the guide sleeves (9) one by one. The lifting drive component (7) is fixed on the base plate (8), and the output end of the lifting drive component (7) is connected to the lifting guide rail (6) for transmission.

3. The vacuum drying apparatus according to claim 2, characterized in that, The lower ends of each guide rod (10) pass through the corresponding guide sleeve (9), and the lower ends of several guide rods (10) are fixed to a horizontally arranged elongated synchronous rod (11).

4. The vacuum drying apparatus according to claim 1, 2, or 3, characterized in that, The top of the cover plate (2) is fixed with a mounting bracket (12). The top of the mounting bracket (12) has a downward recessed notch (12a). The outer side of the outer end of the output shaft (4a) of the translation drive (4) has a recessed annular mounting groove (4b). The outer end of the output shaft (4a) of the translation drive (4) passes through the notch (12a) and the two side walls of the notch (12a) are respectively inserted into the mounting groove (4b). The output shaft (4a) of the translation drive (4) can move in the notch (12a) in the vertical direction.

5. The vacuum drying apparatus according to claim 1, 2, or 3, characterized in that, The sliding part (5) is a pulley that is rotatably connected to the cover plate (2).

6. The vacuum drying apparatus according to claim 1, 2, or 3, characterized in that, The sliding part (5) is a slider.

7. The vacuum drying apparatus according to claim 1, 2, or 3, characterized in that, The vacuum drying device also includes a mounting plate (1c) that is horizontally fixed to the upper side of the tank (1b), and the translation guide rail (3) is horizontally fixed to the opposite sides of the upper side of the mounting plate (1c).

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