Automatic door for machine tool side window

Abstract

The utility model discloses a kind of automatic doors for lathe side window, comprising: fixing frame, door frame and sliding door, door frame is fixedly connected with lathe by fixing frame, slide rail is provided on door frame, slide rail is used to guide sliding door to move in vertical direction, cylinder is provided on door frame, connecting frame is provided on sliding door, cylinder is connected with sliding door by connecting frame, to drive the displacement of sliding door in vertical direction, waterproof curtain is connected below sliding door;By the above mode, the utility model can realize the feeding of large-size workpiece under the premise of not increasing the space occupied by lathe and effectively prevent cutting fluid leakage.

Description

Technical Field

[0001] This utility model relates to the field of machine tool technology, and in particular to an automatic door for machine tool side windows. Background Technology

[0002] In the field of machine tool processing, especially in highly automated production lines, machine tools are typically equipped with side windows or front doors to enable automatic workpiece loading and unloading. Currently, for the loading of large workpieces, the mainstream solution in the market is to use a front sliding door, where the entire front door of the machine tool is moved forward to provide the maximum opening space. However, this solution significantly increases the overall depth of the machine tool, placing higher demands on workshop space. For the side window solution, which offers greater space utilization, a left-right sliding door structure is commonly used. Figure 1 As shown, this solution typically includes a side sliding door 11, a sliding door guide rail 12, a frame 13, and a drive device 14 (such as a cylinder). Its working principle is that after the machine tool system issues an instruction, the cylinder pushes the side sliding door to slide left and right along the transverse guide rail to open or close.

[0003] However, this traditional side-sliding door structure has inherent drawbacks. When opening, the side-sliding door requires a large lateral space in its sliding direction, typically about 1.5 times the door width. This significantly increases the overall lateral size of the machine tool, limiting the density of equipment arrangement in space-constrained workshops. More importantly, the pass-through size of the side window directly limits the maximum size of the workpiece to be processed. To process larger workpieces, the area and sliding stroke of the side-sliding door must be increased, further exacerbating the space occupation problem and making it difficult to load large workpieces through the side window while maintaining a compact machine tool layout. Utility Model Content

[0004] The main technical problem solved by this utility model is to provide an automatic door for the side window of a machine tool, which can realize the loading of large-sized workpieces and effectively prevent cutting fluid leakage without increasing the space occupied by the machine tool.

[0005] To solve the above-mentioned technical problems, the present invention provides an automatic door for a machine tool side window, comprising: a fixed frame, a door frame, and a sliding door. The door frame is fixedly connected to the machine tool through the fixed frame. A slide rail is provided on the door frame to guide the sliding door to move vertically. A cylinder is provided on the door frame, and a connecting frame is provided on the sliding door. The cylinder is connected to the sliding door through the connecting frame to drive the sliding door to move vertically. A waterproof curtain is connected to the bottom of the sliding door.

[0006] Preferably, a limit switch is provided on the door frame to detect the position of the sliding door on the door frame.

[0007] Preferably, the bottom of the connecting frame is provided with anti-collision blocks.

[0008] Preferably, the waterproof curtain includes a first waterproof curtain and a second waterproof curtain, which are arranged in a staggered manner with gaps between them to prevent chips and cutting fluid from splashing outside the door.

[0009] Preferably, the waterproof curtain is made of flexible PVC material.

[0010] Preferably, anti-chip brushes are provided on both sides of the sliding door, with the anti-chip brushes facing the slide rail to prevent chips and cutting fluid from flowing out from the gaps.

[0011] Preferably, an inner protective plate is also provided on the side of the door frame closest to the machine tool, and the inner protective plate covers the cylinder.

[0012] The beneficial effects of this utility model are as follows: By adopting a vertically lifting sliding door structure, the large lateral sliding space required by traditional side sliding doors is avoided, significantly saving the machine tool's floor space and providing favorable conditions for a compact workshop layout. The flexible waterproof curtain connected to the lower part of the sliding door, combined with the rigid door body above, allows the workpiece to adapt to a larger workpiece size than the actual opening of the door when passing through, effectively expanding the machine tool's processing range. Simultaneously, the double-layered, staggered waterproof curtain, together with the anti-chip brushes on both sides of the sliding door, forms multiple sealing barriers, effectively preventing chips and cutting fluid generated during processing from splashing or leaking outwards, maintaining a clean working environment. Furthermore, the dual protection system composed of limit switches and anti-collision blocks ensures the accuracy and safety of the sliding door's operation, preventing equipment damage caused by misoperation or component failure. The inner protective plate isolates the cylinders and other driving components from the harsh environment of the processing area, improving the service life and operational reliability of core components. In summary, this utility model achieves compatibility with large-sized workpieces within a limited space, while ensuring good sealing performance and operational safety. Attached Figure Description

[0013] Figure 1 This is a schematic diagram of the structure of a side-sliding door that moves left and right in the prior art; Figure 2 This is a schematic diagram of the overall structure of this utility model from an outward perspective; Figure 3 This is a schematic diagram of the overall structure of this utility model from an inward perspective; Figure 4 This is a schematic diagram of the structure of this utility model with the inner protective plate removed.

[0014] The components in the attached diagram are labeled as follows: 11. Side sliding door; 12. Sliding door guide rail; 13. Frame; 14. Drive unit; 2. Fixture; 3. Door frame; 31. Slide rail; 32. Limit switch; 4. Sliding door; 41. Connecting frame; 411. Anti-collision block; 5. Cylinder; 6. Waterproof curtain; 7. Anti-dandruff brush; 8. Inner panel. Detailed Implementation

[0015] To make the above-mentioned objects, features, and advantages of this utility model more apparent and understandable, the specific embodiments of this utility model will be described in detail below with reference to the accompanying drawings. Many specific details are set forth in the following description to provide a full understanding of this utility model. However, this utility model can be implemented in many other ways different from those described herein, and those skilled in the art can make similar modifications without departing from the spirit of this utility model. Therefore, this utility model is not limited to the specific embodiments disclosed below.

[0016] In the description of this utility model, it should be understood that the terms "center", "longitudinal", "transverse", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential", etc., indicating the orientation or positional relationship are based on the orientation or positional relationship shown in the accompanying drawings, and are only for the convenience of describing this utility model and simplifying the description, and are not intended to indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this utility model.

[0017] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of indicated technical features. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one of that feature. In the description of this utility model, "a plurality of" means at least two, such as two, three, etc., unless otherwise explicitly specified.

[0018] In this utility model, unless otherwise explicitly specified and limited, the terms "installation," "connection," "joining," and "fixing," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components, unless otherwise explicitly limited. Those skilled in the art can understand the specific meaning of the above terms in this utility model according to the specific circumstances.

[0019] In this utility model, unless otherwise explicitly specified and limited, "above" or "below" the second feature can mean that the first feature is in direct contact with the second feature, or that the first feature is in indirect contact with the second feature through an intermediate medium. Furthermore, "above," "on top of," and "over" the second feature can mean that the first feature is directly above or diagonally above the second feature, or simply that the first feature is at a higher horizontal level than the second feature. "Below," "below," and "under" the second feature can mean that the first feature is directly below or diagonally below the second feature, or simply that the first feature is at a lower horizontal level than the second feature.

[0020] It should be noted that when an element is referred to as being "fixed to" or "set on" another element, it can be directly on the other element or there may be an intervening element. When an element is considered to be "connected to" another element, it can be directly connected to the other element or there may be an intervening element. The terms "vertical," "horizontal," "upper," "lower," "left," "right," and similar expressions used herein are for illustrative purposes only and do not represent the only possible implementation.

[0021] Unless otherwise specified, physical quantities in formulas should be understood as basic quantities of SI base units, or derived quantities derived from basic quantities through mathematical operations such as multiplication, division, differentiation, or integration.

[0022] Example: refer to Figures 2-4 An automatic door for a machine tool side window includes: a fixed frame 2, a door frame 3, and a sliding door 4. The door frame 3 provides a stable mounting base for the automatic door through the opening on the side of the machine tool connected to the fixed frame 2. Vertical slide rails 31 are installed on both sides of the door frame 3. The sliding door 4 cooperates with the slide rails 31 through sliders or guide grooves on both sides, ensuring that the sliding door 4 can smoothly rise and fall along a precise vertical trajectory. A cylinder 5 is installed on the door frame 3, and a connecting frame 41 is bolted to the sliding door 4. The piston rod of the cylinder 5 is bolted to the sliding door 4 through the rigid connecting frame 41. When the machine tool control system issues a command, the piston rod of the cylinder 5 extends or retracts, directly driving the sliding door 4 to open upward or close downward along the slide rails 31 through the cylinder 5 and the connecting frame 41. A waterproof curtain 6 is connected to the bottom of the sliding door 4. The waterproof curtain 6 includes a first waterproof curtain and a second waterproof curtain. The first and second waterproof curtains are arranged with staggered seams, that is, partially overlapping in the vertical direction and with staggered seams, forming a labyrinthine seal to prevent chips and cutting fluid from splashing outside the door. The waterproof curtain 6 is made of flexible PVC material, making it soft and not interfering with the loading of workpieces. The waterproof curtain 6 is detachably fixed to the bottom of the sliding door 4 by pressure strips and bolts.

[0023] refer to Figures 1-4First, the sliding door 4 adopts a vertical lifting motion, fundamentally eliminating the lateral sliding space required by the traditional side sliding door 11, greatly saving the machine tool's lateral footprint and facilitating a compact workshop layout. Second, the special door structure formed by connecting a flexible waterproof curtain 6 to the bottom of the rigid sliding door 4 ensures the rigidity and protective strength of the sliding door 4, while the flexible part can adapt to deformation when workpieces pass through, allowing workpieces larger than the actual size of the sliding door 4 to pass smoothly through the side window, effectively expanding the machine tool's processing capabilities. Finally, the double-layered, staggered waterproof curtain 6 constitutes a highly efficient sealing barrier, effectively preventing chips and cutting fluid generated during processing from splashing outwards, maintaining a clean working environment, while the flexibility of the PVC material ensures that it will not interfere with door movement and loading.

[0024] refer to Figures 2-4 To ensure the safe and precise operation of the sliding door 4, limit switches 32 are installed at both the upper and lower positions of the door frame 3. These limit switches 32 are preferably mechanical toggle switches or proximity sensors, and their installation positions correspond to the extreme positions of the sliding door 4 when it is fully closed and fully open. At the bottom of the connecting bracket 41 connected to the cylinder 5, a bumper block 411 made of a cushioning material such as polyurethane is attached. When the sliding door 4 moves to its extreme position, it triggers the corresponding limit switch 32, which then sends a signal to the machine tool control system. The system then cuts off the air supply to the cylinder 5, stopping the sliding door 4. The bumper block 411 serves as a mechanical redundancy protection, and its installation height is slightly lower than the triggering component. In the rare case where the limit switch 32 malfunctions, if the sliding door 4 continues to move, the bumper block 411 will contact the door frame 3 or the machine tool body before the rigid components, absorbing the impact energy through its own deformation, thereby preventing damage to the equipment due to a hard collision.

[0025] refer to Figures 2-4 The combination of limit switch 32 and anti-collision block 411 constitutes a double-insurance travel limiting system. Limit switch 32 enables precise electrical control detection and feedback of the sliding door's four positions, ensuring accurate and timely opening and closing actions with a high degree of automation. Anti-collision block 411 provides reliable mechanical backup protection, greatly improving the system's safety and reliability, preventing serious mechanical collision accidents in the event of electrical component failure, effectively protecting the automatic door itself and the machine tool's main structure, and extending the equipment's service life.

[0026] refer to Figures 2-4On the left and right edges of the sliding door 4, there are long strip-shaped anti-chip brushes 7. The anti-chip brushes 7 are typically made of wear-resistant nylon or plastic bristles and are fixed to the sides of the sliding door 4 via a profile base. The bristle tips of the anti-chip brushes 7 face and are slightly pressed against the slide rail 31 or sealing surface of the door frame 3. During the raising and lowering of the sliding door 4, the anti-chip brushes 7 remain in contact with the mating surfaces. One of their functions is sealing, effectively filling the dynamic gap between the sliding door 4 and the door frame 3, preventing small chips and cutting fluid from leaking out. Another function is cleaning; as the sliding door 4 moves up and down, the bristles continuously scrape away debris and dirt adhering to the surface of the slide rail 31, keeping the guide rail clean and ensuring smooth movement.

[0027] refer to Figures 2-4 The anti-chip brush 7 solves the problem of dynamic sealing between moving parts. It not only effectively prevents processing waste and coolant from leaking out of the door gaps, maintaining a clean workshop environment and reducing cleaning work, but more importantly, its self-cleaning function prevents debris from accumulating on the slide rail 31, avoiding operational malfunctions, abnormal noises, or accelerated wear caused by the slide rail 31 jamming, thus ensuring the long-term stability and reliability of the automatic door.

[0028] refer to Figures 2-4 On the side of the door frame 3 facing the inside of the machine tool's machining compartment, an inner protective plate 8 is also installed. The inner protective plate 8 is typically made of stamped metal sheet, and its size and shape are designed to completely cover the cylinder 5 and related air pipe joints mounted on the door frame 3. The inner protective plate 8 is detachably fixed to the door frame 3 with screws, forming a physical isolation layer that isolates the core drive components from the harsh machining environment inside the machine tool.

[0029] refer to Figure 3 and Figure 4 The inner protective plate 8 plays a crucial protective role. It protects precision pneumatic components such as cylinder 5 from the direct impact and contamination of metal chips, cutting fluid, and oil mist splashing throughout the machining chamber. This significantly reduces the risk of cylinder 5 malfunctioning due to blockage, corrosion, or external damage, ensuring its stable operation. It also facilitates equipment maintenance; cylinder 5 can be easily and quickly repaired simply by removing the inner protective plate 8.

[0030] Working process: When the machine tool needs to perform a loading operation, the control system will issue an opening command. At this time, the piston rod of cylinder 5 begins to retract, driving the sliding door 4 to move smoothly upward along the slide rails 31 on both sides of the door frame 3 via the connecting frame 41. When the sliding door 4 rises to the fully open position, it will trigger the limit switch 32 installed at the upper end. The limit switch 32 then sends a positioning signal back to the control system. Upon receiving the signal, the control system controls cylinder 5 to stop moving, and the sliding door 4 remains open.

[0031] After the sliding door 4 is opened, operators or automated equipment can load and unload workpieces through the side window. Because the flexible waterproof curtain 6 connected to the lower part of the sliding door 4 has deformable characteristics, even if the size of the workpiece is slightly larger than the opening of the rigid sliding door 4, it can pass through smoothly by squeezing the waterproof curtain 6, thus achieving compatibility with large-sized workpieces.

[0032] After loading is completed, the control system issues a door-closing command. The piston rod of cylinder 5 extends, driving the sliding door 4 downward along the slide rail 31 via the connecting frame 41. When the sliding door 4 descends to the fully closed position, it triggers the limit switch 32 installed at the lower end. The limit switch 32 sends a signal indicating that it is in position, and the control system stops the cylinder 5, thus tightly closing the sliding door 4. The anti-collision block 411 at the bottom of the connecting frame 41 serves as mechanical protection. If the limit switch 32 fails, the anti-collision block 411 will contact the machine tool structure before other components, acting as a buffer.

[0033] Throughout the entire lifting and lowering process of the sliding door 4, the anti-chip brushes 7 installed on both sides of the sliding door 4 remain in contact with the slide rail 31 or sealing surface, preventing chips and cutting fluid from leaking out of the gaps and continuously scraping away debris on the slide rail 31. Simultaneously, the double-layered, staggered waterproof curtains 6 form an effective sealing barrier, preventing chips and cutting fluid from splashing outwards from the processing area. The inner protective plate 8 installed on the inside of the door frame 3 isolates the cylinder 5 from the harsh environment inside the processing chamber, preventing cutting fluid and chips from contaminating or damaging the cylinder 5.

[0034] The above description is merely an embodiment of this utility model and does not limit the patent scope of this utility model. Any equivalent structural or procedural transformations made based on the description and drawings of this utility model, or direct or indirect applications in other related technical fields, are similarly included within the patent protection scope of this utility model.

Claims

1. An automatic door for a machine tool side window, characterized in that, include: The machine tool is fixedly connected to the fixed frame (2), the door frame (3) and the sliding door (4). The door frame (3) is fixedly connected to the machine tool through the fixed frame (2). The door frame (3) is provided with a slide rail (31) for guiding the sliding door (4) to move vertically. The door frame (3) is provided with a cylinder (5) and the sliding door (4) is provided with a connecting frame (41). The cylinder (5) is connected to the sliding door (4) through the connecting frame (41) to drive the sliding door (4) to move vertically. A waterproof curtain (6) is connected to the bottom of the sliding door (4).

2. An automatic door for a machine tool side window according to claim 1, characterized in that: A limit switch (32) is provided on the door frame (3) to detect the position of the sliding door (4) on the door frame (3).

3. An automatic door for a machine tool side window according to claim 2, characterized in that: The bottom of the connecting frame (41) is provided with a collision protection block (411).

4. An automatic door for a machine tool side window according to claim 1, characterized in that: The waterproof curtain (6) includes a first waterproof curtain and a second waterproof curtain. The first waterproof curtain and the second waterproof curtain are arranged in a staggered manner with gaps between them to prevent chips and cutting fluid from splashing outside the door.

5. An automatic door for a machine tool side window according to claim 4, characterized in that: The waterproof curtain (6) is made of PVC flexible material.

6. An automatic door for a machine tool side window according to claim 1 or 4, characterized in that: The sliding door (4) is provided with anti-chip brushes (7) on both sides, and the anti-chip brushes (7) are positioned facing the slide rail (31) to prevent chips and cutting fluid from flowing out of the gap.

7. An automatic door for a machine tool side window according to claim 1, characterized in that: The door frame (3) is also provided with an inner guard plate (8) on the side near the machine tool, and the inner guard plate (8) covers the cylinder (5).

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