Protective cover for numerical control machine tool
By using limit components on the sliding door of CNC machine tool, including stop lever and roller, the problem of sliding door sliding under inertia force is solved, and the stable fixation and safety improvement of the sliding door is achieved, and the service life is extended.
Patent Information
- Application Number
- CN202422587546.3
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-10-25
- Publication Date
- 2025-08-26
- Estimated Expiration
- 2034-10-25
AI Technical Summary
The sliding doors of existing CNC machine tools lack effective fixed structures, which leads to free sliding under the action of inertial force or external force, affecting the normal operation of the operator.
The limiting components are adopted, including a stop rod, roller, fixing ring, spring and flange seat. The stop rod is driven to slide in the limiting groove through the rotary rod to achieve stable fixation of the sliding door, and rolling friction is used instead of sliding friction to enhance self-locking performance.
The sliding door can be kept stably in the open position, which facilitates operator maintenance and material loading, improves safety, reduces friction and wear, and extends service life.
Smart Images
Figure CN223265302U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the technical field of numerical control machine tools, in particular to a protective cover for numerical control machine tools. Background Art
[0002] Small CNC machine tool protective cover is a safety protection device used for small CNC machine tools to protect the safety of operators when the machine tool is working; a hinged door or a sliding door is set on the protective cover shell to facilitate the operator to quickly access the interior of the machine tool to carry out necessary maintenance, adjustments or material loading work.
[0003] The current protective hinged doors or sliding doors are installed at the front of the machine tool protective cover shell; the hinged doors need to occupy a certain space to fully open the door during operation, but the sliding doors do not occupy additional space when opening and closing; sliders or pulleys are respectively provided at the top and bottom of the sliding door, and corresponding slide rails are fixed on the protective cover shell, and the sliding door is slidably set at the front of the protective cover shell; under the action of the slide rails, the sliding door completes the sliding opening and closing movement; in the setting of the sliding door, there is a lack of an effective fixing structure for the sliding door; when the sliding door is pushed open or pulled back, the sliding door is not fixed, which will cause the sliding door to be unable to stably remain in the open position, and the sliding door will slide freely along the slide rail direction under the action of inertia or external force, thereby affecting the normal operation of the operator.
[0004] Therefore, the applicant provides a protective cover for a CNC machine tool to solve the problems raised in the above background technology. Utility Model Content
[0005] The purpose of the utility model is to provide a protective cover for a CNC machine tool, which solves the problem that the existing sliding door is not fixed and can slide freely along the direction of the slide rail under the action of inertia force or external force.
[0006] In order to solve the above technical problems, the utility model provides a protective cover for a CNC machine tool, including a display screen, which is arranged on the front side wall of the shell, and the front of the shell is suitable for installing a sliding door; a limit assembly is arranged in the bottom inner cavity of the sliding door close to the display screen, and the limit assembly also includes a stop rod, which is adapted to be assembled in the limit groove for positioning the sliding door.
[0007] Furthermore, the top of the stop rod is adapted to install a roller, and the stop rod is located below the roller and a fixing ring, a spring and a flange seat are sequentially arranged; the flange seat is fixed to the bottom surface of the inner cavity, and a through hole is arranged through the bottom of the inner cavity directly below the flange seat.
[0008] Furthermore, the top of the roller abuts against the inner wall of the L-shaped block, and the inner wall of the L-shaped block is formed by plane a, arc surface a, arc surface b and plane b connected in sequence along a counterclockwise direction.
[0009] Furthermore, a T-shaped slide groove is provided on the outer side wall where the long side of the L-shaped block is located, the T-shaped slide groove is adapted to the T-shaped guide rail, and the T-shaped guide rail is provided on the top of the inner cavity.
[0010] Furthermore, a bearing is inlaid and installed on the outer side wall where the short side of the L-shaped block is located, the bearing is set on one end of the rotating rod, and a cross-shaped rotating handle is set on the other end of the rotating rod.
[0011] Furthermore, an external thread is provided on the outer wall of the rotating rod body, the external thread is adapted to the internal thread hole, and the internal thread hole is provided on one side wall of the inner cavity close to the display screen.
[0012] Furthermore, a plurality of limiting grooves are provided on the top of the front side wall of the shell body.
[0013] Furthermore, a square groove is provided on the front outer wall of the shell near the limiting component.
[0014] Furthermore, an observation window is provided on the front outer wall of the sliding door, and a handle is provided on the side of the observation window close to the display screen.
[0015] Furthermore, pulleys are respectively installed at the bottom and top of the sliding door body, and the pulleys are adapted to movable grooves, which are respectively arranged on both sides of the shell near the bottom and top of the sliding door.
[0016] By adopting the above technical solution, the utility model has the following beneficial effects:
[0017] 1. The utility model provides a protective cover for a CNC machine tool, which uses a limit assembly to fix the opening and closing position of a sliding door; the operator rotates the handle to drive the L-shaped block to slide on the T-shaped guide rail, so that the stop rod enters the limit groove and fixes the sliding door at the position corresponding to the limit groove; the use of the limit assembly enables the sliding door to be stably maintained in the open position, which is convenient for the operator to work inside the machine tool and perform necessary maintenance, adjustments or material loading work.
[0018] 2. The utility model provides a protective cover for CNC machine tools. The protective cover uses a rotary rod with an external thread in the limit assembly to rotate and drive the stop rod in and out of the limit groove instead of the traditional pin limit; the threaded connection has good self-locking performance, which can effectively prevent the pin from falling off the limit groove due to the vibration of the machine tool in the protective cover, resulting in the free sliding of the sliding door when the machine tool is working, thereby improving the safety of the overall protection of the sliding door.
[0019] 3. The utility model provides a protective cover for a CNC machine tool. In the limiting assembly of the protective cover, a roller is adapted to be installed on the top of the stop rod. The roller abuts against the inner wall of the L-shaped block instead of the top of the stop rod directly contacting the inner wall of the L-shaped block. Rolling friction is used instead of sliding friction. The friction coefficient of rolling friction is smaller, which reduces friction and wear and extends the service life of the L-shaped block and the stop rod. BRIEF DESCRIPTION OF THE DRAWINGS
[0020] In order to more clearly illustrate the specific implementation methods of the utility model or the technical solutions in the prior art, the drawings required for use in the specific implementation methods or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are some implementation methods of the utility model. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying any creative work.
[0021] Figure 1 The figure is a schematic diagram of the overall structure of a protective cover for a CNC machine tool;
[0022] Figure 2 The figure is a schematic diagram of a top view of a protective cover for a CNC machine tool;
[0023] Figure 3 It is a schematic diagram of the cross-sectional structure of the inner cavity and the limiting component;
[0024] Figure 4 This is a schematic diagram of the overall structure of the limit component in working state;
[0025] Figure 5 It is a schematic diagram of the overall structure of the limit assembly;
[0026] Figure 6 It is a structural diagram of the inner wall of the L-shaped block;
[0027] Figure 7 This is a schematic diagram of the overall structure of the sliding door.
[0028] Figure numerals: 1. display screen; 2. shell; 21. limit groove; 22. square groove; 23. movable groove; 3. sliding door; 31. observation window; 32. handle; 33. pulley; 4. inner cavity; 41. limit assembly; 411. stop rod; 412. roller; 413. fixing ring; 414. spring; 415. flange seat; 416. L-shaped block; 4161. T-shaped slide groove; 4162. plane a; 4163. arc surface a; 4164. arc surface b; 4165. plane b; 417. bearing; 418. rotary rod; 4181. external thread; 419. rotating handle; 42. through hole; 43. T-shaped guide rail; 44. internal thread hole. DETAILED DESCRIPTION
[0029] The following is a clear and complete description of the technical solution of the present invention in conjunction with the accompanying drawings. Obviously, the embodiments described are only some of the embodiments of the present invention, not all of them. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making any creative efforts are within the scope of protection of the present invention.
[0030] In the description of this utility model, it should be noted that the terms "center," "upper," "lower," "left," "right," "vertical," "horizontal," "inner," and "outer," etc., indicating positions or relationships, are based on the positions or relationships shown in the accompanying drawings and are intended solely to facilitate the description of this utility model and simplify the description. They do not indicate or imply that the devices or components referred to must have a specific orientation, be constructed, or operate in a specific orientation. Therefore, they should not be construed as limitations on this utility model. Furthermore, the terms "first," "second," and "third" are used for descriptive purposes only and should not be construed as indicating or implying relative importance.
[0031] In the description of this utility model, it should be noted that, unless otherwise expressly specified or limited, the terms "mounted," "connected," and "connected" should be understood in a broad sense. For example, they can refer to fixed connections, detachable connections, or integral connections; mechanical connections, electrical connections; direct connections, indirect connections through an intermediate medium, and internal communication between two components. Those skilled in the art will understand the specific meanings of the above terms in this utility model based on the specific circumstances.
[0032] The present invention will be further explained below in conjunction with specific implementation methods.
[0033] like Figure 1-7 As shown, the present embodiment provides a protective cover for a CNC machine tool, comprising a display screen 1, which is an existing product; the display screen 1 is arranged on the front side wall of the shell 2, and the front of the shell 2 is adapted to be installed with a sliding door 3; a limiting assembly 41 is provided in the bottom inner cavity 4 of the side of the sliding door 3 close to the display screen 1, and the limiting assembly 41 also includes a stop rod 411, which is adapted to be mounted in the limit groove 21 for positioning the sliding door 3; the protective cover uses the limiting assembly 41 to fix the opening and closing position of the sliding door 3; the operator drives the L-shaped block 416 to slide on the T-shaped guide rail 43 by rotating the rotating handle 419, so that the stop rod 411 enters the limit groove 21, and fixes the sliding door 3 at the position corresponding to the limit groove 21; the use of the limiting assembly 41 enables the sliding door 3 to be stably maintained in the open position, which is convenient for the operator to quickly perform internal operations of the machine tool (not shown in the figure) and perform necessary maintenance, adjustments or material loading.
[0034] like Figure 4 、 Figure 5As shown, in this embodiment, the top of the stop rod 411 is adapted to be installed with a roller 412, and the stop rod 411 is located below the roller 412 and a fixing ring 413, a spring 414 and a flange seat 415 are sequentially arranged; the stop rod 411 is fitted with a spring 414, and the two ends of the spring 414 are respectively against the fixing ring 413 and the flange seat 415, and the spring 414 ensures that the top of the roller 412 is always against the inner wall of the L-shaped block 416; the flange seat 415 is fixed to the bottom surface of the inner cavity 4, and the bottom of the inner cavity 4 is located directly below the flange seat 415 and a through hole 42 is provided. When the L-shaped block 416 presses down the roller 412 at the top of the stop rod 411, the stop rod 411 moves downward, passes through the through hole 42, and is fitted into the limit slot 21, completing the limiting function of the limit assembly 41. During this process, the spring 414 is compressed.
[0035] like Figure 3-6As shown, in this embodiment, the top of the roller 412 is against the inner wall of the L-shaped block 416, and the roller 412 is against the inner wall of the L-shaped block 416 instead of the top of the stop rod 411 directly contacting the inner wall of the L-shaped block 416, using rolling friction instead of sliding friction. The friction coefficient of rolling friction is smaller, which reduces friction and wear, and effectively extends the service life of the L-shaped block 416 and the stop rod 411; the inner wall of the L-shaped block 416 is composed of a plane a4162, an arc surface a4163, an arc surface b4164 and a plane b4165 connected in sequence in a counterclockwise direction; the plane a4162 is located at Above plane b4165, plane a4162 and plane b4165 are connected by arc surface a4163 and arc surface b4164; plane a4162 and arc surface a4163 are tangent to each other, arc surface a4163 and arc surface b4164 are tangent to each other, and arc surface b4164 and plane b4165 are tangent to each other; when the sliding door 3 slides freely, the top of the roller 412 abuts against plane a4162; when the limiting assembly 41 is limited, the sliding door 3 is fixed, the stop rod 411 enters the limiting groove 21, and the top of the roller 412 abuts against plane b4165; the L-shaped block 416 A T-shaped slide groove 4161 is provided on the outer wall where the long side is located, and the T-shaped slide groove 4161 is adapted to the T-shaped guide rail 43, and the T-shaped guide rail 43 is provided at the top of the inner cavity 4; the L-shaped block slides on the T-shaped guide rail 43; a bearing 417 is embedded in the outer wall where the short side of the L-shaped block 416 is located, and the bearing 417 is mounted on one end of the rotary rod 418, and a cross-shaped rotating handle 419 is provided on the other end of the rotary rod 418; through the bearing 417, the rotational motion of the rotary rod 418 is converted into the sliding of the L-shaped block 416 on the T-shaped guide rail 43; an external thread 4181 is provided on the outer wall of the rotary rod 418 body, and the external thread 4181 is adapted to the internal threaded hole 44, and the internal threaded hole 44 is arranged on the side wall of the inner cavity 4 close to the display screen 1; the rotary rod 418 is adapted to be mounted on the internal threaded hole 44; the rotary rod 418 with the external thread 4181 is used in the limiting assembly 41 to rotate and drive the stop rod 411 in and out of the limiting groove 21 instead of the traditional pin limit; the threaded connection has good self-locking performance, which can effectively prevent the pin from being separated from the limiting groove 21 due to the vibration of the machine tool in the protective cover, resulting in the free sliding of the sliding door 3 when the machine tool is working, etc. The setting of the limiting groove 21 improves the safety of the overall protection of the sliding door.
[0036] like Figure 1 、 Figure 2 and Figure 7As shown, in this embodiment, a plurality of limiting grooves 21 are provided on the top of the front side wall of the shell body 2; the limiting grooves 21 are adapted to fit the stop rods 411; a square groove 22 is provided on the front outer wall of the shell body 2 near the limiting assembly 41; when the sliding door 3 is closed, part of the rotating rod 418 and the rotating handle 419 in the limiting assembly 41 are located in the square groove 22, which is convenient for the operator to rotate the rotating handle 419 to fix the sliding door 3; an observation window 31 is provided on the front outer wall of the sliding door 3; the observation window 31 is made of a transparent protective material, such as a polycarbonate plate or tempered glass, which can protect the operator from the impact of the sliding door 3. The operator is protected from being hurt by flying chips, coolant, etc., and can observe the inside of the protective cover; a handle 32 is provided on the side of the observation window 31 near the display screen 1, and the handle 32 provides a component that is easy to grasp and operate, so that the operator can conveniently open and close the sliding door 3; pulleys 33 are respectively installed on the bottom and top of the sliding door 3 body, and the pulley 33 is adapted to the movable groove 23, and the movable groove 23 is respectively provided on both sides of the shell 2 near the bottom and top of the sliding door 3; under the joint action of the movable groove 23 and the pulley 33, the sliding door 3 completes the sliding opening and closing movement.
[0037] The working principle of a protective cover for a CNC machine tool provided by the utility model is as follows:
[0038] When it is necessary to fix the position of the sliding door on the shell to keep it stationary: the operator holds the rotating handle and rotates the rotary rod into the inner cavity until the top of the roller touches plane b; the inward rotation of the rotary rod drives the L-shaped block to slide along the T-shaped guide rail, and the sliding of the L-shaped block causes the roller to roll over plane a, arc surface a, arc surface b and plane b in sequence; in this process, the spring is compressed, the stop rod moves downward, passes through the through hole, and is fitted into the limit slot, completing the limiting function of the limit assembly.
[0039] When it is necessary to release the sliding door from the shell: the operator holds the rotating handle and unscrews the rotary rod from the inner cavity until the top of the roller touches plane a; the outward rotation of the rotary rod drives the L-shaped block to slide along the T-shaped guide rail, and the sliding of the L-shaped block causes the roller to roll over plane b, arc surface b, arc surface a and plane a in sequence; in this process, the extension and reset of the spring drives the stop rod to move upward, and the stop rod slides out of the limit groove, returning to its initial state, and releasing the limit of the limit assembly.
[0040] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention, rather than to limit it. Although the present invention has been described in detail with reference to the above embodiments, those skilled in the art should understand that they can still modify the technical solutions described in the above embodiments, or replace some or all of the technical features therein with equivalents. However, these modifications or replacements do not deviate the essence of the corresponding technical solutions from the scope of the technical solutions of the embodiments of the present invention.
Claims
1. A protective cover for a CNC machine tool, characterized in that: The invention comprises a display screen (1), the display screen (1) being arranged on the front side wall of a housing (2), and a sliding door (3) being adapted to be installed on the front of the housing (2); a limiting assembly (41) is arranged in the inner cavity (4) at the bottom of the sliding door (3) close to the display screen (1), and the limiting assembly (41) further comprises a stop rod (411), and the stop rod (411) is adapted to be assembled in a limit groove (21) for positioning the sliding door (3).
2. A protective cover for a CNC machine tool according to claim 1, characterized in that: The top of the stop rod (411) is adapted to be installed with a roller (412); the stop rod (411) is located below the roller (412); a fixing ring (413), a spring (414) and a flange seat (415) are sequentially arranged; the flange seat (415) is fixed to the bottom surface of the inner cavity (4); and a through hole (42) is arranged through the bottom of the inner cavity (4) directly below the flange seat (415).
3. The protective cover for a CNC machine tool according to claim 2, characterized in that: The top of the roller (412) abuts against the inner wall of the L-shaped block (416), and the inner wall of the L-shaped block (416) is formed by plane a (4162), arc surface a (4163), arc surface b (4164) and plane b (4165) connected in sequence in a counterclockwise direction.
4. The protective cover for a CNC machine tool according to claim 3, characterized in that: A T-shaped slide groove (4161) is provided on the outer side wall where the long side of the L-shaped block (416) is located. The T-shaped slide groove (4161) is adapted to fit a T-shaped guide rail (43). The T-shaped guide rail (43) is provided on the top of the inner cavity (4).
5. The protective cover for a CNC machine tool according to claim 3, characterized in that: The outer side wall where the short side of the L-shaped block (416) is located is inlaid with a bearing (417), and the bearing (417) is sleeved on one end of a rotating rod (418), and the other end of the rotating rod (418) is provided with a cross-shaped rotating handle (419).
6. The protective cover for a CNC machine tool according to claim 5, characterized in that: An external thread (4181) is provided on the outer wall of the rotating rod (418), and the external thread (4181) is adapted to the internal thread hole (44), and the internal thread hole (44) is provided on a side wall of the inner cavity (4) close to the display screen (1).
7. The protective cover for a CNC machine tool according to claim 1, characterized in that: A plurality of limiting grooves (21) are provided on the top of the front side wall of the shell body (2).
8. The protective cover for a CNC machine tool according to claim 7, characterized in that: A square groove (22) is provided on the front outer wall of the housing (2) close to the limiting assembly (41).
9. The protective cover for a CNC machine tool according to claim 1, characterized in that: An observation window (31) is provided on the front outer wall of the sliding door (3), and a handle (32) is provided on the side of the observation window (31) close to the display screen (1).
10. The protective cover for a CNC machine tool according to claim 9, characterized in that: Pulleys (33) are respectively installed at the bottom and top of the sliding door (3) body, and the pulleys (33) are adapted to the movable grooves (23). The movable grooves (23) are respectively arranged on both sides of the housing (2) near the bottom and top of the sliding door (3).