Vacuum box conditioning device

Abstract

This utility model discloses a vacuum chamber adjustment device, comprising: a frame, a lifting and adjusting mechanism, a forward and backward moving mechanism, and a ratchet locking assembly. The lifting and adjusting mechanism is mounted on the frame and has a lifting base plate. The forward and backward moving mechanism is mounted on the lifting base plate and has a drive shaft adapted to rotate, thereby driving the forward and backward moving mechanism to move the vacuum chamber horizontally. The ratchet locking assembly includes a ratchet portion connected to the drive shaft and a locking portion disposed on the forward and backward moving mechanism. The ratchet portion and the locking portion are adapted to cooperate to selectively lock the rotation of the drive shaft. This utility model can realize the lifting and forward and backward adjustment of the vacuum chamber and maintain a fixed position after adjustment, avoiding shaking during the production process.

Description

Technical Field

[0001] This utility model relates to a vacuum chamber adjustment device. Background Technology

[0002] Currently, in vacuum forming production lines for plastic pipes, the position adjustment of the vacuum chamber is crucial for ensuring the quality of pipe forming. Traditional vacuum chamber adjustment devices mostly use foot-based adjustment methods, which suffer from inconvenience and asynchronous adjustment on both sides. Especially when producing small-diameter medical tubing, frequent fine adjustments are required to ensure the chamber remains stable and does not wobble. Existing motor-driven adjustment methods are complex to operate and require the installation of guide rails on the workshop floor, which damages the surface structure.

[0003] After searching the existing technology, Chinese patent CN202685297U was found to disclose a vacuum chamber with adjustable workstation. The vacuum chamber achieves forward and backward position adjustment by moving the rollers at the four corners of the bottom in a ground rail, up and down adjustment by adjusting the position of the protrusions on the adjusting rod, and left and right adjustment by moving the adjusting rod on the roller.

[0004] However, the existing technologies mentioned above still have the following shortcomings: the roller and ground rail structure requires modification of the workshop floor; the four corners of the adjusting rod are adjusted independently, making it difficult to ensure synchronization; there is a lack of an effective locking mechanism, which can easily cause shaking during production and affect the quality of pipe forming; and for the production of small-diameter pipes that require precise positioning, the adjustment accuracy and stability are difficult to meet the requirements. Summary of the Invention

[0005] The technical problem to be solved by this utility model is to overcome the defects of the prior art and provide a vacuum box adjustment device that can realize the lifting and lowering and forward and backward adjustment of the vacuum box, and keep the position fixed after adjustment to avoid shaking during the production process.

[0006] To solve the above-mentioned technical problems, the technical solution of this utility model is: a vacuum chamber adjustment device, comprising:

[0007] frame;

[0008] A lifting and adjusting mechanism is mounted on the frame and has a lifting base plate.

[0009] A forward and backward moving mechanism is mounted on the lifting base plate. The forward and backward moving mechanism is provided with a drive shaft, which is adapted to rotate to drive the forward and backward moving mechanism to move the vacuum box in a horizontal straight line.

[0010] A ratchet locking assembly includes a ratchet portion connected to the drive shaft and an engaging portion disposed on the forward and backward moving mechanism, the ratchet portion and the engaging portion being adapted to cooperate to selectively lock the rotation of the drive shaft.

[0011] Furthermore, the lifting and adjusting mechanism includes:

[0012] A guide shaft, which is vertically and slidably mounted on the frame;

[0013] A screw connecting plate, which is fixed to the lower end of the guide shaft;

[0014] A lifting screw, which is rotatably mounted on the frame, and is threadedly connected to the screw connecting plate;

[0015] The lifting base plate is installed at the upper end of the guide shaft.

[0016] Furthermore, the lifting and adjusting mechanism also includes:

[0017] An adjusting handwheel is mounted on the upper end of the lifting screw;

[0018] When the adjusting handwheel drives the lifting screw to rotate, the screw connecting plate is adapted to drive the guide shaft and the lifting base plate to move up and down along the guide shaft.

[0019] Furthermore, the forward and backward moving mechanism includes:

[0020] A pair of slides, the slides being fixed to the lifting base plate, and the drive shaft being rotatably mounted inside the slides;

[0021] Gear, the gear being fixed to the drive shaft;

[0022] A rack, which is fixed to the lower surface of the vacuum chamber and meshes with the gear;

[0023] A linear guide rail is fixed to the lower surface of the vacuum chamber, and the linear guide rail is slidably connected to the slide block via a slider.

[0024] Furthermore, the forward and backward moving mechanism also includes:

[0025] A handwheel, which is mounted on the end of the drive shaft.

[0026] Furthermore, the forward and backward moving mechanism also includes:

[0027] At least one limiting block is mounted on the end of the rack, the limiting block being adapted to limit the movement path of the gear.

[0028] Furthermore, the ratchet locking assembly includes:

[0029] A first ratchet, which is fixed on the drive shaft;

[0030] The second ratchet is fixed on the drive shaft, and the direction of the ratchet teeth of the second ratchet is opposite to the direction of the ratchet teeth of the first ratchet.

[0031] A first pawl, rotatably configured, is adapted to engage with the ratchet teeth of the first ratchet.

[0032] The second pawl is rotatably configured and adapted to engage with the ratchet teeth of the second ratchet.

[0033] The first and second chucks are respectively adapted to lock the forward and reverse rotation of the drive shaft. By adopting the above technical solution, this utility model has the following beneficial effects:

[0034] In this invention, the lifting and adjusting mechanism first drives the lifting base plate to rise and fall vertically, thereby adjusting the height of the vacuum box. Then, the forward and backward moving mechanism is installed on the lifting base plate and converts the rotational motion into linear motion through the rotation of the transmission shaft, driving the vacuum box to move forward and backward along the production line. When the vacuum box is adjusted to the appropriate position, the ratchet locking assembly locks the transmission shaft in the current position to prevent the vacuum box from shifting during the production process.

[0035] In summary, this utility model eliminates the need for motor drive and ground-fixed guide rails, reducing damage to the workshop floor. The manual adjustment method allows operators to fine-tune the design according to different pipe specifications. The two-way locking function of the ratchet locking assembly ensures that the vacuum chamber is fixed in position during production, avoiding positional displacement caused by vibration or external forces, and guaranteeing the quality of pipe forming. Attached Figure Description

[0036] Figure 1 This is a three-dimensional structural diagram of the vacuum chamber adjustment device of this utility model;

[0037] Figure 2 This is a front view of the vacuum chamber adjustment device of this utility model;

[0038] Figure 3 This is a right view of the vacuum chamber adjustment device of this utility model;

[0039] Figure 4 for Figure 1 A magnified view of part A in the middle. Detailed Implementation

[0040] To make the contents of this utility model easier to understand, the present utility model will be further described in detail below with reference to specific embodiments and accompanying drawings.

[0041] like Figure 1-4 As shown, a vacuum chamber regulating device includes:

[0042] Rack 1;

[0043] Lifting and adjusting mechanism 2 is installed on frame 1 and has a lifting base plate 3.

[0044] The front and rear moving mechanism 4 is mounted on the lifting base plate 3. The front and rear moving mechanism 4 is equipped with a transmission shaft 5, which is adapted to rotate to drive the front and rear moving mechanism 4 to move the vacuum box along a horizontal straight line.

[0045] The ratchet locking assembly includes a ratchet portion connected to the drive shaft 5 and an engaging portion disposed on the front and rear moving mechanism 4. The ratchet portion and the engaging portion are adapted to cooperate to selectively lock the rotation of the drive shaft 5.

[0046] In this embodiment, as Figure 1 As shown, firstly, the lifting adjustment mechanism 2 drives the lifting base plate 3 to rise and fall in the vertical direction, thereby adjusting the height position of the vacuum box. Then, the forward and backward moving mechanism 4 is installed on the lifting base plate 3 and converts the rotational motion into linear motion through the rotation of the transmission shaft 5, driving the vacuum box to move forward and backward along the production line direction. When the vacuum box is adjusted to the appropriate position, the ratchet locking assembly locks the transmission shaft 5 in the current position to prevent the vacuum box from shifting during the production process.

[0047] Specifically, such as Figure 1-2 As shown, the lifting and adjusting mechanism 2 includes:

[0048] Guide shaft 11 is vertically slidably mounted on frame 1;

[0049] Screw connecting plate 12, the screw connecting plate 12 is fixed to the lower end of guide shaft 11;

[0050] The lifting screw 13 is rotatably mounted on the frame 1 and is threadedly connected to the screw connecting plate 12.

[0051] The lifting base plate 3 is installed on the upper end of the guide shaft 11.

[0052] Specifically, such as Figure 1-2 As shown, the lifting adjustment mechanism 2 also includes:

[0053] Adjusting handwheel 14 is installed at the upper end of lifting screw 13;

[0054] When the adjusting handwheel 14 drives the lifting screw 13 to rotate, the screw connecting plate 12 is adapted to drive the guide shaft 11 and the lifting base plate 3 to move up and down along the guide shaft 11.

[0055] In this embodiment, as Figure 1-2 As shown, the frame 1 includes a vertically arranged fixed block and a panel connecting the column. The fixed block is provided with a guide hole, and the guide shaft 11 passes through the guide hole and can slide vertically along the guide hole. The guide shaft 11 achieves linear movement in the vertical direction through the guidance of the guide hole, avoiding swaying during lifting and lowering.

[0056] The lifting screw 13 is rotatably mounted on the frame 1 via a bearing seat. The screw connecting plate 12 has an internal threaded hole that matches the lifting screw 13. The lifting screw 13 passes through the internal threaded hole and forms a threaded connection with it. When the lifting screw 13 rotates, the screw connecting plate 12 moves along the axial direction of the lifting screw 13, thereby driving the guide shaft 11 and the lifting base plate 3 fixed thereon to achieve lifting and adjustment.

[0057] The adjusting handwheel 14 is fixed to the upper end of the lifting screw 13. The operator can drive the lifting screw 13 to rotate synchronously by turning the adjusting handwheel 14. By adjusting the rotation of the handwheel 14, the lifting position of the vacuum chamber can be controlled to meet different height requirements.

[0058] Specifically, such as Figure 1 and Figure 3 As shown, the forward and backward moving mechanism 4 can have the following structure:

[0059] A pair of slides 22 are fixed on the lifting base plate 3, and the drive shaft 5 is rotatably installed inside the slides 22;

[0060] Gear 23, gear 23 is fixed on drive shaft 5;

[0061] Rack 24 is fixed to the lower surface of the vacuum chamber and meshes with gear 23.

[0062] Linear guide 25 is fixed to the lower surface of the vacuum chamber and is slidably connected to slide block 22 via slider.

[0063] Specifically, such as Figure 1 and Figure 3 As shown, the forward and backward moving mechanism 4 also includes:

[0064] Handwheel 26 is mounted on the end of drive shaft 5.

[0065] Specifically, such as Figure 1-2 As shown, the forward and backward moving mechanism 4 also includes:

[0066] Two limiting blocks 41 are installed on the ends of the rack 24 and are adapted to limit the movement path of the gear 23.

[0067] In this embodiment, as Figure 1-3 As shown, a pair of slides 22 are fixed to the upper surface of the lifting base plate 3 by bolts. The slides 22 have bearing holes inside, and the drive shaft 5 passes through the bearing holes and is rotatably installed through the bearing.

[0068] Gear 23 is fixed to the drive shaft 5 via a key connection, and rack 24 is fixed horizontally to the lower surface of the vacuum chamber. Gear 23 and rack 24 form a gear and rack transmission pair. When the drive shaft 5 rotates, gear 23 drives rack 24, which meshes with it, to move horizontally, thereby realizing the front and rear position adjustment of the vacuum chamber.

[0069] Two linear guide rails 25 are provided, and are fixed to the lower surface of the vacuum chamber parallel to the rack 24. The slider on the linear guide rail 25 is connected to the slide block 22 by bolts. The cooperation between the linear guide rail 25 and the slider provides horizontal linear motion guidance for the vacuum chamber, preventing lateral displacement of the vacuum chamber during forward and backward movement. Limiting blocks 41 are installed at both ends of the rack 24. A preset gap is maintained between the limiting blocks 41 and the gear 23. When the gear 23 moves to the end position of the rack 24, the limiting blocks 41 block the gear 23 from moving further, preventing the gear 23 from disengaging from the meshing range of the rack 24.

[0070] Limiting sleeves are provided on both sides of gear 23. The limiting sleeves are fitted onto the transmission shaft 5 and located on both sides of gear 23. The limiting sleeves restrict the axial movement of gear 23 on the transmission shaft 5 by axial positioning. The setting of the limiting sleeves ensures that gear 23 maintains a fixed axial position on the transmission shaft 5, preventing gear 23 from axially moving along the transmission shaft 5 during operation and affecting normal meshing with rack 24.

[0071] Specifically, such as Figure 1 and Figure 4 As shown, the ratchet locking assembly includes:

[0072] The first ratchet 31 is fixed on the drive shaft 5;

[0073] The second ratchet is fixed on the drive shaft 5, and the direction of the ratchet teeth of the second ratchet is opposite to the direction of the ratchet teeth of the first ratchet 31.

[0074] The first pawl 33 is rotatably configured and is adapted to engage with the ratchet teeth of the first ratchet 31.

[0075] The second pawl 34 is rotatably configured and is adapted to engage with the ratchet teeth of the second ratchet.

[0076] The first pawl 33 and the second pawl 34 are respectively adapted to lock the forward rotation and reverse rotation of the drive shaft 5.

[0077] In this embodiment, as Figure 1 and Figure 4 As shown, when the first pawl 33 engages with the first ratchet 31, the drive shaft 5 is locked and cannot rotate in one direction, but is allowed to rotate in the opposite direction. When the second pawl 34 engages with the second ratchet, the drive shaft 5 is locked and cannot rotate in the opposite direction. By simultaneously engaging the first pawl 33 and the second pawl 34, bidirectional rotation of the drive shaft 5 can be controlled, preventing the vacuum chamber from being accidentally displaced due to external forces.

[0078] The specific embodiments described above further illustrate the technical problems, technical solutions, and beneficial effects of this utility model. It should be understood that the above descriptions are merely specific embodiments of this utility model and are not intended to limit this utility model. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of this utility model should be included within the protection scope of this utility model.

Claims

1. A vacuum box conditioning device, characterized in that, include: Rack (1); A lifting adjustment mechanism (2) is installed on the frame (1) and the lifting adjustment mechanism (2) is provided with a lifting base plate (3). A forward and backward moving mechanism (4) is installed on the lifting base plate (3). The forward and backward moving mechanism (4) is provided with a transmission shaft (5). The transmission shaft (5) is adapted to rotate so as to drive the forward and backward moving mechanism (4) to move the vacuum box along a horizontal straight line. The ratchet locking assembly includes a ratchet portion connected to the drive shaft (5) and an engaging portion disposed on the forward and backward moving mechanism (4), the ratchet portion and the engaging portion being adapted to cooperate to selectively lock the rotation of the drive shaft (5).

2. The vacuum chamber adjustment device according to claim 1, characterized in that: The lifting and adjusting mechanism (2) includes: Guide shaft (11), the guide shaft (11) is vertically slidably mounted on the frame (1); Screw connecting plate (12), the screw connecting plate (12) is fixed to the lower end of the guide shaft (11); A lifting screw (13) is rotatably mounted on the frame (1) and is threadedly connected to the screw connecting plate (12); The lifting base plate (3) is installed on the upper end of the guide shaft (11).

3. The vacuum chamber adjustment device according to claim 2, characterized in that: The lifting adjustment mechanism (2) also includes: Adjusting handwheel (14), which is installed at the upper end of the lifting screw (13); When the adjusting handwheel (14) drives the lifting screw (13) to rotate, the screw connecting plate (12) is adapted to drive the guide shaft (11) and the lifting base plate (3) to move up and down along the guide shaft (11).

4. The vacuum chamber adjustment device according to claim 1, characterized in that: The forward and backward moving mechanism (4) includes: A pair of slides (22) are fixed on the lifting base plate (3), and the drive shaft (5) is rotatably installed inside the slides (22); Gear (23), said gear (23) is fixed on the transmission shaft (5); A rack (24) is fixed to the lower surface of the vacuum chamber and meshes with the gear (23); Linear guide (25) is fixed on the lower surface of the vacuum chamber and is slidably connected to the slide block (22) by a slider.

5. The vacuum chamber adjustment device according to claim 4, characterized in that, The forward and backward moving mechanism (4) also includes: Handwheel (26) is mounted on the end of the drive shaft (5).

6. The vacuum chamber adjustment device according to claim 4, characterized in that: The forward and backward moving mechanism (4) also includes: At least one limiting block (41) is mounted on the end of the rack (24) and the limiting block (41) is adapted to limit the movement path of the gear (23).

7. The vacuum chamber adjustment device according to claim 1, characterized in that: The ratchet locking assembly includes: The first ratchet (31) is fixed on the drive shaft (5); The second ratchet is fixed on the drive shaft (5), and the direction of the ratchet teeth of the second ratchet is opposite to the direction of the ratchet teeth of the first ratchet (31). The first pawl (33) is rotatably disposed and adapted to engage with the ratchet teeth of the first ratchet (31); The second pawl (34) is rotatably configured and adapted to engage with the ratchet teeth of the second ratchet. The first pawl (33) and the second pawl (34) are respectively adapted to lock the forward rotation and reverse rotation of the drive shaft (5).

Images