Pneumatic sealing door of vacuum box
By employing a double sliding door mechanism and a parallelogram linkage mechanism in the sealed door of the vacuum chamber, the movement path of the sealed door is altered, thus solving the problem of sealing strip wear, achieving uniform contact of the sealing strip, and extending its service life.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-03-26
- Publication Date
- 2026-03-10
AI Technical Summary
After prolonged use, the sealing strip between the sliding door and the door frame of the vacuum chamber is prone to aging and wear.
The system employs a dual sliding door mechanism, consisting of an outer sliding door and an inner sliding door, connected by a parallelogram linkage mechanism. A cylinder drives the inner sliding door to move and swing the outer sliding door, altering the traditional sliding door's movement path. This allows the inner sliding door to move linearly first and then swing, or swing first and then move linearly, reducing wear on the sealing strip.
Through a compound motion method, the sliding door makes uniform contact with the sealing strip, reducing the wear rate of the sealing strip and extending its service life.
Smart Images
Figure CN223984402U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of vacuum chambers, specifically to a pneumatic sealing door for a vacuum chamber. Background Technology
[0002] The potting of circuit boards needs to be carried out in a vacuum environment; otherwise, a large number of air bubbles will be generated after the circuit board is potted. Therefore, a vacuum potting machine is required. The vacuum potting machine includes a vacuum chamber. The product is placed in the vacuum chamber, and then the vacuum chamber is brought to a negative pressure state. Then, the mixed AB glue is poured into the product.
[0003] In order for products to move in and out of the vacuum chamber along the production line, sealed doors need to be designed on both sides of the vacuum chamber. The sealed doors open when products enter or exit and close when dispensing adhesive. A common sealed door includes a door frame, a sliding door that slides open and closes, and a cylinder that drives the sliding door to slide. After long-term use, the sealing strip between the sliding door and the door frame is prone to aging and wear. Utility Model Content
[0004] The purpose of this invention is to provide a pneumatic sealing door for a vacuum chamber, which aims to change the movement path of the sliding door, thereby reducing the wear rate of the sealing strip between the sliding door and the door frame.
[0005] To solve the above-mentioned technical problems, this utility model specifically provides the following technical solution:
[0006] A pneumatic sealing door for a vacuum chamber includes a door frame, a double sliding door mechanism, and a cylinder. The cylinder drives the double sliding door mechanism to move, thereby opening and closing a doorway on the door frame. The double sliding door mechanism includes an outer sliding door and an inner sliding door. The outer sliding door is slidably connected to the door frame, and the inner sliding door is oscillatingly connected to the outer sliding door. The two ends of the cylinder are rotatably connected to the door frame and the inner sliding door, respectively, so that the cylinder can drive the inner sliding door to move the outer sliding door synchronously. When the outer sliding door moves to the end of its travel, the cylinder can drive the inner sliding door to oscillate relative to the outer sliding door. The inner sliding door is used to open and close the doorway.
[0007] Furthermore, the inner sliding door and the outer sliding door are connected by a parallelogram linkage mechanism. Specifically, the parallelogram linkage mechanism includes four swing arms disposed on both sides of the inner sliding door. Each swing arm has two first rotating shafts at both ends. One of the first rotating shafts is connected to the inner sliding door, and the other first rotating shaft is connected to the outer sliding door. The axis of each first rotating shaft is horizontally disposed and perpendicular to the sliding direction of the outer sliding door.
[0008] Furthermore, a second rotating shaft and a third rotating shaft are respectively provided at both ends of the cylinder. The axes of the second rotating shaft and the third rotating shaft are both horizontally arranged and perpendicular to the sliding direction of the outer sliding door. The second rotating shaft is connected to the top of the door frame, and the third rotating shaft is connected to the bottom of the inner sliding door.
[0009] Furthermore, two vertically extending grooves are provided on both sides of the door frame. The two ends of the second rotating shaft are respectively inserted into the two grooves. A screw and a nut are installed on the side of each groove. The screw is vertically arranged and can rotate around its own axis and is connected to the door frame. The nut is screwed to the screw and fixedly connected to the second rotating shaft.
[0010] Furthermore, both the outer sliding door and the inner sliding door are rectangular frame structures, the inner sliding door can move through the outer sliding door, and the interior of the inner sliding door is fitted with glass.
[0011] Furthermore, a first braking structure is installed on the outer sliding door, which is used to limit the maximum upward swing of the inner sliding door.
[0012] Furthermore, a vertically oriented slide rail is installed on the door frame, the outward sliding door is connected to the slide rail, and a second braking structure is installed on the door frame to limit the maximum downward sliding stroke of the outward sliding door.
[0013] Compared with the prior art, this application has the following advantages:
[0014] The embodiments of this utility model improve the traditional pneumatic sealing sliding door into a double sliding door mechanism with an outer sliding door and an inner sliding door. This improves the traditional single linear motion of the sliding door into a compound motion of first linear movement and then swinging, or first swinging and then linear movement. This allows the inner sliding door to contact the sealing strip through its own swinging motion, thereby reducing the wear rate of the sealing strip. Attached Figure Description
[0015] To more clearly illustrate the embodiments of this utility model or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings in the following description are merely exemplary, and those skilled in the art can derive other embodiments based on the provided drawings without creative effort.
[0016] Figure 1 This is a perspective view of the first working condition of this utility model embodiment;
[0017] Figure 2This is a perspective view of the second working condition of this utility model embodiment;
[0018] Figure 3 This is an assembly drawing of the double sliding door mechanism according to an embodiment of the present utility model;
[0019] Figure 4 This is a front view of the first working condition of this utility model embodiment;
[0020] Figure 5 for Figure 4 A cross-sectional view along the AA direction;
[0021] Figure 6 This is a front view of the second working condition of this utility model embodiment;
[0022] Figure 7 for Figure 6 A cross-sectional view along the BB direction;
[0023] The labels in the diagram represent the following:
[0024] 1-Door frame; 11-Slide rail; 12-Second braking structure; 13-Slide groove; 14-Screw; 15-Nut; 2-Outward sliding door; 21-First braking structure; 3-Inward sliding door; 31-Glass; 4-Cylinder; 41-Second pivot; 42-Third pivot; 5-Parallelogram linkage mechanism; 51-Swing arm; 52-First pivot. Detailed Implementation
[0025] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.
[0026] After prolonged use, the sealing strip between the sliding door and the door frame is prone to aging and wear. To address this issue, this embodiment provides a pneumatic sealing door for a vacuum chamber, which aims to change the movement path of the sliding door, thereby reducing the wear rate of the sealing strip between the sliding door and the door frame 1. This is referred to as the pneumatic sealing door below.
[0027] refer to Figure 1 and Figure 2 The pneumatic sealing door includes: a door frame 1, a double sliding door mechanism and a cylinder 4. The cylinder 4 is used to drive the double sliding door mechanism to move, thereby opening and closing the door opening on the door frame 1.
[0028] The double sliding door mechanism includes an outer sliding door 2 and an inner sliding door 3. The outer sliding door 2 is slidably connected to the door frame 1, and the inner sliding door 3 is oscillatingly connected to the outer sliding door 2. The two ends of the cylinder 4 are rotatably connected to the door frame 1 and the inner sliding door 3, so that the cylinder 4 can drive the inner sliding door 3 to move the outer sliding door 2 synchronously. When the outer sliding door 2 moves to the end of its stroke, the cylinder 4 can drive the inner sliding door 3 to oscillate relative to the outer sliding door 2. The inner sliding door 3 is used to open and close the doorway.
[0029] This embodiment improves the traditional pneumatic sealing sliding door into a double sliding door mechanism with an outer sliding door 2 and an inner sliding door 3. This improves the traditional single linear motion of the sliding door into a compound motion of first linear movement and then swinging, or first swinging and then linear movement. This allows the inner sliding door 3 to contact the sealing strip through its own swinging motion, thereby reducing the wear rate of the sealing strip.
[0030] Furthermore, the swinging motion is usually the rotation of the door around the door hinge. This motion will inevitably cause one side of the sliding door 3 to contact the sealing strip first, and then the other side to contact the sealing strip, which will result in one side of the sealing strip bearing greater pressure and wear than the other side.
[0031] To solve this problem, refer to Figure 3 The inner sliding door 3 and the outer sliding door 2 are connected by a parallelogram linkage mechanism 5. Specifically, the parallelogram linkage mechanism 5 includes four swing arms 51 arranged on both sides of the inner sliding door 3. Each swing arm 51 has two first rotating shafts 52 at both ends. One first rotating shaft 52 is connected to the inner sliding door 3, and the other first rotating shaft 52 is connected to the outer sliding door 2. The axis of each first rotating shaft 52 is horizontal and perpendicular to the sliding direction of the outer sliding door 2.
[0032] The parallelogram linkage mechanism 5 ensures that when the inner sliding door 3 swings relative to the outer sliding door 2, the distance between each side of the inner sliding door 3 and the door frame 1 is always equal, so that each side of the inner sliding door 3 can contact the sealing strip at the same time and apply the same pressure to each side of the sealing strip.
[0033] Combination Figure 3 Both the outer sliding door 2 and the inner sliding door 3 are rectangular frame structures. The inner sliding door 3 can move through the outer sliding door 2, and the interior of the inner sliding door 3 is fitted with glass 31.
[0034] Combination Figure 4 and Figure 5 The outer sliding door 2 is equipped with a first braking structure 21, which is used to limit the maximum stroke of the inner sliding door 3 to swing upward. This design is used to prevent the inner sliding door 3 from swinging upward excessively, so that the swing arm 51 can only rotate to a horizontal position at most.
[0035] The first braking structure 21 is specifically installed at the top of the inner side of the outer sliding door 2. The first braking structure 21 is made of rubber block or rubber strip.
[0036] Combination Figure 6 and Figure 7 A vertically oriented slide rail 11 is installed on the door frame 1. The outer sliding door 2 is connected to the slide rail 11. A second braking structure 12 is installed on the door frame 1. The second braking structure 12 is used to limit the maximum downward sliding stroke of the outer sliding door 2. This design is used to prevent the outer sliding door 2 from continuing to move, so that the cylinder 4 can drive the inner sliding door 3 to swing downward and inward.
[0037] The second braking structure 12 is specifically installed below the door opening of the door frame 1. The second braking structure 12 is made of rubber block or rubber strip.
[0038] refer to Figure 5 and Figure 7 The cylinder 4 has a second rotating shaft 41 and a third rotating shaft 42 at its two ends. The axes of the second rotating shaft 41 and the third rotating shaft 42 are both horizontally set and perpendicular to the sliding direction of the outer sliding door 2. The second rotating shaft 41 is connected to the top of the door frame 1, and the third rotating shaft 42 is connected to the bottom of the inner sliding door 3.
[0039] refer to Figure 1 , Figure 2 , Figure 4 and Figure 6 The second rotating shaft 41 is vertically connected to the door frame 1. Specifically, two vertically extending slide grooves 13 are provided on both sides of the door frame 1. The two ends of the second rotating shaft 41 are respectively inserted into the two slide grooves 13. A screw 14 and a nut 15 are installed on the side of each slide groove 13. The screw 14 is vertically set and can be rotatably connected to the door frame 1 around its own axis. The nut 15 is screwed to the screw 14 and fixedly connected to the second rotating shaft 41.
[0040] By rotating the screw 14, the nut 15 can move up and down along the screw 14, thereby changing the height of the second rotating shaft 41. This design is used to adjust the installation height of the cylinder 4, thereby changing the lifting height of the double sliding door mechanism. When the product height is low, appropriately lowering the installation height of the cylinder 4 can improve production efficiency.
[0041] The above embodiments are merely exemplary embodiments of this utility model and are not intended to limit this utility model. The scope of protection of this utility model is defined by the claims. Those skilled in the art can make various modifications or equivalent substitutions to this utility model within its substance and scope of protection, and such modifications or equivalent substitutions should also be considered as falling within the scope of protection of this utility model.
Claims
1. A kind of pneumatic sealing door of vacuum box, it is characterized in that, Including door frame (1), double sliding door mechanism and air cylinder (4), the air cylinder (4) is used to drive the double sliding door mechanism moves, to open and close the door hole on the door frame (1), wherein the double sliding door mechanism includes one outer sliding door (2) and one inner sliding door (3), the outer sliding door (2) is slidably connected with the door frame (1), the inner sliding door (3) is swingably connected with the outer sliding door (2), the two ends of the air cylinder (4) are rotatably connected with the door frame (1) and the inner sliding door (3) respectively, so that the air cylinder (4) can drive the inner sliding door (3) drive the outer sliding door (2) synchronously slide, when the outer sliding door (2) moves to the end of its stroke, the air cylinder (4) can drive the inner sliding door (3) swing relative to the outer sliding door (2), the inner sliding door (3) is used to open and close the door hole.
2. According to claim 1, a kind of pneumatic sealing door of vacuum box, it is characterized in that, The inner sliding door (3) and the outer sliding door (2) are connected by parallelogram linkage (5), specifically, the parallelogram linkage (5) includes four swing arms (51) arranged on the two sides of the inner sliding door (3), two first rotation shafts (52) are arranged at the two ends of each swing arm (51), one of the first rotation shafts (52) is connected with the inner sliding door (3), the other first rotation shaft (52) is connected with the outer sliding door (2), the axis of each first rotation shaft (52) is horizontally arranged and perpendicular to the sliding direction of the outer sliding door (2).
3. According to claim 1, a kind of pneumatic sealing door of vacuum box, it is characterized in that, The two ends of the air cylinder (4) are provided with second rotation shaft (41) and third rotation shaft (42), the axis of the second rotation shaft (41) and the third rotation shaft (42) is horizontally arranged and perpendicular to the sliding direction of the outer sliding door (2), wherein the second rotation shaft (41) is connected to the top of the door frame (1), and the third rotation shaft (42) is connected to the bottom of the inner sliding door (3).
4. According to claim 3, a kind of pneumatic sealing door of vacuum box, it is characterized in that, Two slide grooves (13) extending in vertical direction are arranged on the two sides of the door frame (1), the two ends of the second rotation shaft (41) are respectively inserted into the interior of two slide grooves (13), a screw rod (14) and a nut (15) are mounted on the side of each slide groove (13), the screw rod (14) is vertically arranged and rotatably connected to the door frame (1) around its axis, the nut (15) is screw-connected with the screw rod (14), and the nut (15) is fixedly connected with the second rotation shaft (41).
5. According to claim 1, a kind of pneumatic sealing door of vacuum box, it is characterized in that, The outer sliding door (2) and the inner sliding door (3) are both rectangular frame structures, the inner sliding door (3) can move through the outer sliding door (2), and the inner sliding door (3) is internally provided with glass (31).
6. The pneumatic sealing door of the vacuum box according to claim 5, characterized in that, The outer sliding door (2) is provided with a first braking structure (21), and the first braking structure (21) is used for limiting the maximum stroke of upward swinging of the inner sliding door (3).
7. The pneumatic sealing door of the vacuum box according to claim 1, characterized in that, The door frame (1) is provided with a sliding rail (11) arranged in the vertical direction, the outer sliding door (2) is connected with the sliding rail (11), and the door frame (1) is provided with a second braking structure (12), and the second braking structure (12) is used for limiting the maximum stroke of downward sliding of the outer sliding door (2).