Protective cover and machine tool
The horizontally folding tri-fold door assembly solves the problems of complex structure and safety hazards of existing machine tool protective doors, achieving the effects of simplifying operation, reducing costs and improving safety.
Patent Information
- Application Number
- CN202422850959.6
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-11-22
- Publication Date
- 2025-09-26
- Estimated Expiration
- 2034-11-22
AI Technical Summary
Existing machine tool protective doors have complex structures, high costs and pose safety risks, especially when the buffer support fails, the door panel may automatically fall down.
A horizontally folding tri-fold door assembly includes first, second, and third door bodies, which are hingedly connected and provided with locking members to simplify the structure, avoid reliance on guide structures and oblique supports, and ensure the stability of the door panel.
It reduces costs, simplifies operations, improves safety, avoids door tipping accidents, and provides greater operating space and flexibility.
Smart Images
Figure CN223383137U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the technical field of machining equipment, in particular to a protective cover and a machine tool. Background Art
[0002] Machine tools are a type of equipment used for parts processing in modern mechanical manufacturing. Common types include lathes, milling machines, and grinders. These types of machine tools generate large amounts of metal scrap during part processing. To ensure operator safety and maintain cleanliness at the production site, existing machine tools are equipped with protective structures that enclose the processing area to prevent the splashing of scrap. Furthermore, to facilitate access to and placement of workpieces, the protective cover is equipped with a retractable door. This door is controlled to allow operators to access and place workpieces within the work area.
[0003] In the prior art, for example, the protective door structure disclosed in patent CN212735246U features a door panel that folds up and down, and requires a corresponding curved guide mechanism and buffer support to assist the operator in opening the door panel. This protective door structure is complex, has numerous parts, and is costly. Furthermore, if the buffer support fails or malfunctions when the folding door panel is open, it could cause the door panel to automatically fall, posing a safety hazard. Utility Model Content
[0004] In order to overcome at least one defect in the above-mentioned prior art, the present invention provides a protective cover and a machine tool. The protective cover has a door assembly with a simple structure, easy installation and low cost. In addition, the door assembly is easy to open and close and has high safety.
[0005] The utility model provides a protective cover: it includes a shell, an operating window is opened on the side wall of the shell, a door assembly is arranged at the operating window, the door assembly includes a first door body, a second door body and a third door body, one side of the first door body is connected to a side wall of the operating window, the other side of the first door body is hinged to one side of the second door body, the other side of the second door body is hinged to one side of the third door body, the other side of the third door body is abutted against the other side wall of the operating window, and a first locking member is arranged between the side of the third door body away from the second door body and the shell.
[0006] Compared with the prior art, the protective cover of the utility model has the following advantages:
[0007] In the protective cover structure of the utility model, a horizontally foldable door assembly is provided at the operating window position of the shell. Specifically, the door assembly includes three door bodies, which are connected in a hinged manner. When the door is closed, the three door bodies unfold to form a horizontal door panel structure. When the door is opened, the three door bodies rotate and fold together to expose the largest operating space as possible, so as to facilitate workers to debug the equipment in the work area through the operating window. In addition, this door assembly with a horizontal rotating and folding structure does not need to rely on a guide structure and an oblique support mechanism when opening and closing like the upper and lower folding structures in the prior art, which simplifies the entire door assembly, reduces costs, and prevents the door body from tipping over, thereby avoiding safety accidents.
[0008] As an improvement, a hinge is connected between the outer end of the first door body away from the second door body and the side wall of the operating window, so that the first door body can be flipped outward and opened; a hinge is connected between the first door body and the second door body and near the outer end, so that the second door body and the first door body can be folded in an outward direction; a second locking member is provided between the upper end of the first door body near the second door body and the shell at the top of the operating window. In the above improved structure, when the door is opened, the second door body and the first door body are folded outward, and under the action of the second locking member, the first door body can be opened or not according to actual needs, which has a wider range of applications.
[0009] In a further improvement, a hinge is connected between the second door body and the third door body near the inner end, so that the second door body and the third door body can be folded inward; a third locking member is provided between the upper end of the second door body on the side close to the third door body or the upper end of the third door body on the side close to the second door body and the housing at the top of the operating window. In the above improved structure, when opening the door, the third door body and the second door body fold inward relative to each other, making it easier to open the door. In addition, the provision of the third locking member prevents the second and third door bodies from being opened even if the first locking member is erroneously operated, thereby ensuring safety.
[0010] In a further improvement, the second and third locking members have the same structure, both comprising a vertically arranged telescopic door pin and an unlocking pull rod for retracting the lock tongue. Two positioning blocks are connected to the inner wall of the housing at the top of the operating window. When the door assembly is in the closed state, the lock tongues of the two telescopic door pins respectively abut against the inner walls of the two positioning blocks. The lower end of the door assembly is provided with a clearance hole, and the lower ends of the two unlocking pull rods extend downward to the upper ends of the clearance hole. In the above-mentioned improved structure, both the second and third locking members adopt an elastic telescopic door pin structure, which is simple in structure and easy to operate. To unlock, one only needs to pull the unlocking pull rod.
[0011] Further improved, the top of the shell is connected to a protective top plate that can be folded upward to open, and the free end of the protective top plate extends to the upper end of the door assembly, and the two positioning blocks are connected to the lower edge of the protective top plate near the door assembly; latch door catches are connected between the two sides of the protective top plate and the shell.
[0012] As a further improvement, the first door body, the second door body and the third door body are all stainless steel door panels, and a plurality of observation windows are provided on the upper end of each of the stainless steel door panels, and a transparent baffle for covering the observation windows is connected to the inner wall and / or outer wall of each of the stainless steel door panels.
[0013] In a further improvement, the first locking member includes a positioning block and a lock catch. The positioning block is connected to the third door body and has a lock slot. The lock catch is rotatably connected to the side wall of the housing near the third door body. One end of the lock catch can be movably locked in the lock slot, and the other end of the lock catch is connected to an operating handle. In this improved structure, the door assembly and the housing are locked by the engagement of the lock catch with the lock slot, and the lock block is selected by the operating handle, which is more labor-saving.
[0014] In addition, the present invention also provides a machine tool, which includes a machine body, a working area is provided on the machine body, and also includes the aforementioned protective cover, and the shell cover is provided outside the working area.
[0015] Other improved features and advantages of the present invention will be described in the following detailed description, and in part will become apparent from the description, or will be understood by practicing the present invention. The purposes and other advantages of the present invention can be achieved and obtained by the structures specifically pointed out in the description and the drawings. BRIEF DESCRIPTION OF THE DRAWINGS
[0016] Figure 1 This is a three-dimensional structural diagram of the protective cover of the utility model;
[0017] Figure 2 This is a three-dimensional structural diagram of the protective cover of the present invention in another state;
[0018] Figure 3 This is a schematic diagram of the door assembly structure in the present utility model;
[0019] Figure 4 This is a schematic diagram of the door assembly in the present invention from another angle;
[0020] Figure 5 This is a partial enlarged view of the locking structure of the telescopic door pin and the positioning block in the present utility model;
[0021] Figure 6 for Figure 1Enlarge the structure diagram at the X in the middle.
[0022] Description of reference numerals:
[0023] 1. Housing; 2. First door body; 3. Second door body; 4. Third door body; 5. Lifting and retracting door pin; 6. Unlocking lever; 7. Positioning block; 8. Avoidance hole; 9. Protective top plate; 10. Observation window; 11. Lock block; 12. Lock catch; 13. Operating handle. DETAILED DESCRIPTION
[0024] First, those skilled in the art should understand that these embodiments are merely used to explain the technical principles of the embodiments of the present application and are not intended to limit the scope of protection of the embodiments of the present application. Those skilled in the art may adjust them as needed to suit specific application scenarios.
[0025] In the description of the embodiments of this application, it should be noted that, unless otherwise specified or limited, the terms "fixed" and "connected" should be understood in a broad sense. For example, they can refer to fixed connections, detachable connections, or integral connections; they can refer to mechanical connections or electrical connections; they can refer to direct connections or indirect connections through an intermediate medium. Those skilled in the art will understand the specific meanings of the above terms in the embodiments of this application based on the specific circumstances.
[0026] The present application will be further described in detail below with reference to the accompanying drawings and specific embodiments.
[0027] See also Figures 1 to 6 As shown, an embodiment of the present application discloses a protective cover, including a shell 1, both ends and the lower end of the shell 1 in the length direction are open. In actual application, the shell 1 is connected to the outside of the working area of the machine tool. The protective cover involved in this embodiment is mainly aimed at the grinding machine structure.
[0028] An operation window is provided on the side wall in the width direction of the shell 1. The number of operation windows here can be set according to the type of machine tool. For example, this embodiment is applicable to a grinder, and a feed conveyor device and a discharge conveyor device are usually provided on both sides of the grinder in the width direction. Therefore, in this type of machine tool structure, operation windows are provided on both sides of the shell 1.
[0029] In addition, based on safety considerations, in order to avoid metal debris from splashing out of the working area, a corresponding door assembly will be set at the operating window for isolation. Specifically, in this embodiment, the door assembly is a three-fold door structure that can be folded and stacked, specifically, including a first door body 2, a second door body 3 and a third door body 4, wherein one side of the first door body 2 is connected to a side wall of the operating window, the other side of the first door body 2 is hinged to one side of the second door body 3, the other side of the second door body 3 is hinged to one side of the third door body 4, the other side of the third door body 4 is against the other side wall of the operating window, and a first locking member is provided between the side of the third door body 4 away from the second door body 3 and the shell 1, the first locking member is used to connect and lock the entire door assembly with the shell 1, and when the door needs to be opened, the first locking member needs to be unlocked to open the third door body 4.
[0030] In this embodiment, a second locking member is provided between the upper end of the first door body 2 on the side close to the second door body 3 and the housing 1 at the top of the operating window. When the door assembly is locked with the housing 1, the first door body 2 and the housing 1 are individually locked by the second locking member. That is, when the second locking member is locked, the third door body 4 and the second door body 3 can be rotated to open, and the first door cover is fixed. Because in actual operation, when the equipment in the working area is normally debugged, it is sufficient to open the second door body 3 and the third door body 4. In some special cases, when a larger operating space is required, in addition to unlocking the first locking member, the second locking member must also be unlocked to achieve the simultaneous opening of the three doors.
[0031] In this embodiment, a hinge is preferably connected between the outer end of the first door 2, away from the second door 3, and the side wall of the operating window, so that the first door 2 can be flipped outward and opened; a hinge is connected between the first door 2 and the second door 3, near the outer end, so that the second door 3 and the first door 2 can be folded in an outward direction; and a hinge is connected between the second door 3 and the third door 4, near the inner end, so that the second door 3 and the third door 4 can be folded in an inward direction. This structure sets the flip direction of the three doors, which not only facilitates operation and opening, but also better frees up appropriate operating space, so that operators do not bump their heads when debugging the equipment. In addition, in the above structure, a third locking member is provided between the upper end of the second door 3 on the side near the third door 4, or the upper end of the third door 4 on the side near the second door 3, and the housing 1 at the top of the operating window. The third locking member here mainly serves as a safety lock to prevent the door assembly from opening automatically due to failure of the first locking member, thereby avoiding safety accidents.
[0032] In this embodiment, the second locking member and the third locking member have the same structure, both including a vertically arranged telescopic door pin and an unlocking rod 6 for pulling the lock tongue back. The telescopic door pin here is the existing technology, which includes a mounting seat, a lock tongue and a driving member. One end of the lock tongue extends into the mounting seat, and the other end is exposed at one end of the mounting seat. One end of the driving member passes through the other end of the mounting seat and is connected to the lock tongue, and the other end is exposed at the side of the mounting seat opposite to the lock tongue, and an elastic member is provided between the lock tongue and the mounting seat. Under normal circumstances, under the action of the elastic member, the lock tongue is in an extended state. When the driving member is pulled axially, the lock tongue can be driven to overcome the elastic force of the elastic member and retract into the mounting. In this structure, one end of the unlocking rod 6 is connected to the outer end of the driving member. Two positioning blocks 11 are connected to the inner wall of the shell 1 at the top of the operating window. When the door assembly is in a closed state, the lock tongues of the two telescopic door pins respectively abut against the inner walls of the two positioning blocks 11. At this time, when the door assembly is pulled outward, the door assembly cannot rotate under the limiting action of the positioning blocks 11 and the lock tongue; when the door assembly needs to be opened, the unlocking rod 6 is pulled to drive the driving member to drive the lock tongue to retract to the mounting seat to achieve unlocking.
[0033] In the above structure, a bypass hole 8 is provided at the lower end of the door assembly for the feeding conveyor or the discharging conveyor to pass through, and the lower ends of the two unlocking rods 6 extend downward to the upper ends of the bypass hole 8, respectively, to facilitate the worker's unlocking operation.
[0034] On the other hand, in this embodiment, a protective top plate 9 that can be folded upward is connected to the top of the housing 1. The free end of the protective top plate 9 extends to the upper end of the door assembly. Two positioning blocks 11 are connected to the lower edge of the protective top plate 9 near the door assembly. Latch door catches are connected between the sides of the protective top plate 9 and the housing 1. The latch door catch here is a conventional manual latch lock structure and will not be described in detail here.
[0035] In this embodiment, the first door body 2, the second door body 3, and the third door body 4 are all stainless steel door panels. Multiple observation windows 10 are provided at the upper end of each stainless steel door panel. Transparent baffles for covering the observation windows 10 are attached to the inner and / or outer sidewalls of each stainless steel door panel. This structural form ensures the structural strength of the door panels while allowing the operating status of the work area to be observed. Preferably, the transparent baffles are provided on the inner sidewalls of each door panel and are made of acrylic.
[0036] In the description of this application, the description with reference to the terms "this embodiment", "some embodiments", etc. means that the specific features, mechanisms, materials or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the present application. In this specification, the schematic representations of the above terms do not necessarily refer to the same embodiment or example. Moreover, the specific features, mechanisms, materials or characteristics described can be combined in any one or more embodiments or examples in a suitable manner. In addition, those skilled in the art can combine and combine different embodiments or examples described in this specification and the features of different embodiments or examples, unless they are mutually inconsistent.
[0037] The above description is merely a specific embodiment of the present application, but the scope of protection of the present application is not limited thereto. Any changes or substitutions that can be easily conceived by a person skilled in the art within the technical scope disclosed in the present application should be included in the scope of protection of the present application. Therefore, the scope of protection of the present application should be based on the scope of protection of the claims.
Claims
1. A protective cover, characterized in that: The invention comprises a shell (1), a side wall of the shell (1) is provided with an operating window, a door assembly is provided at the operating window, and the door assembly comprises a first door body (2), a second door body (3) and a third door body (4), one side of the first door body (2) is hinged on a side wall of the operating window, the other side of the first door body (2) is hinged to a side of the second door body (3), the other side of the second door body (3) is hinged to a side of the third door body (4), the other side of the third door body (4) is in contact with the other side wall of the operating window, and a first locking member is provided between the side of the third door body (4) away from the second door body (3) and the shell (1).
2. The protective cover according to claim 1, characterized in that: A hinge is connected between the outer end of the first door body (2) away from the second door body (3) and the side wall of the operating window, so that the first door body (2) can be flipped outward and opened; a hinge is connected between the first door body (2) and the second door body (3) and close to the outer end, so that the second door body (3) and the first door body (2) can be folded in an outward direction; a second locking member is provided between the upper end of the first door body (2) close to the second door body (3) and the shell (1) at the top of the operating window.
3. The protective cover according to claim 2, characterized in that: A hinge is connected between the second door body (3) and the third door body (4) and near the inner end, so that the second door body (3) and the third door body (4) can be folded inward; a third locking member is provided between the upper end of the second door body (3) on the side close to the third door body (4) or the upper end of the third door body (4) on the side close to the second door body (3) and the shell (1) at the top of the operating window.
4. The protective cover according to claim 3, characterized in that: The second locking member has the same structure as the third locking member, and both include a vertically arranged telescopic door pin and an unlocking pull rod (6) for pulling the lock tongue back. Two positioning blocks (7) are connected to the inner wall of the shell (1) at the top of the operating window. When the door assembly is in a closed state, the lock tongues of the two telescopic door pins respectively abut against the inner walls of the two positioning blocks (7); a avoidance hole (8) is provided at the lower end of the door assembly, and the lower ends of the two unlocking pull rods (6) respectively extend downward to the upper ends of the avoidance holes (8).
5. The protective cover according to claim 4, characterized in that: The top of the shell (1) is connected to a protective top plate (9) that can be folded upward and opened, and the free end of the protective top plate (9) extends to the upper end of the door assembly, and the two positioning blocks (7) are connected to the lower edge of the protective top plate (9) near the door assembly; latch door buckles are connected between the two sides of the protective top plate (9) and the shell (1).
6. The protective cover according to any one of claims 1 to 5, characterized in that: The first door body (2), the second door body (3) and the third door body (4) are all stainless steel door panels, and a plurality of observation windows (10) are provided at the upper end of each of the stainless steel door panels, and a transparent baffle for covering the observation windows (10) is connected to the inner side wall and / or the outer side wall of each of the stainless steel door panels.
7. The protective cover according to claim 6, characterized in that: The first locking member includes a locking block (11) and a lock catch (12), wherein the locking block (11) is connected to the third door body (4), and a lock slot is provided on the locking block (11), and the lock catch (12) is rotatably connected to the side wall of the housing (1) close to the third door body (4), one end of the lock catch (12) is movably locked in the lock slot, and the other end of the lock catch (12) is connected to an operating handle.
8. A machine tool comprising a machine body with a working area provided thereon, characterized in that: It also comprises the protective cover according to any one of claims 1 to 7, wherein the housing (1) is arranged outside the working area.