Protective door for CNC machine tool

By designing mounting plates and replacement components in the protective doors of CNC machine tools, and utilizing control racks and drive gears to achieve rapid replacement of observation window panels, the problem of difficult disassembly caused by bolt corrosion was solved, thus improving work efficiency.

CN224043272UActive Publication Date: 2026-03-27DONGGUAN HAIFENG PRECISION MACHINERY EQUIPMENT CO LTD
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Utility models(China)
Current Assignee / Owner
Filing Date
2025-04-22
Publication Date
2026-03-27

AI Technical Summary

Technical Problem

The observation window of the existing CNC machine tool protective door is fixed with bolts, which leads to bolt corrosion after long-term use, affecting the disassembly speed of the observation window and reducing work efficiency.

Method used

A protective door structure including a mounting plate, an observation window, and replacement components was designed. By controlling the cooperation of the rack and pinion and the drive gear, the observation window can be quickly replaced, avoiding the use of bolts for fixing.

Benefits of technology

It improved the speed of changing the observation window panel, increased work efficiency, and simplified the replacement process.

✦ Generated by Eureka AI based on patent content.

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Abstract

The utility model relates to the technical field of CNC machine tools, in particular to a protective door for a CNC machine tool, which comprises a mounting base and a fixed top plate, the fixed top plate is arranged above the mounting base, one end of the top surface of the mounting base is connected with one end of the fixed top plate through a connecting rod, and a mounting plate is arranged between the mounting base and the fixed top plate. A replacement assembly used for being matched with the mounting plate is arranged in the middle of the mounting base, an observation window plate is arranged in the middle of the mounting plate, and a mounting opening matched with the observation window plate is formed in the top face of the mounting plate. The driving gear drives the control rack and the locking column to move in the reverse direction of the mounting groove, the locking column is separated from the locking groove, after separation, a worker can pull out the mounting plate and the observation window plate from the position between the fixed top plate and the mounting base, the observation window plate can be taken out through the mounting opening after pulling out, and the observation window plate can be replaced with a new observation window plate after taking out.
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Description

TECHNICAL FIELD

[0001] The utility model relates to CNC machine tool technical field especially is a kind of protective door for CNC machine tool. BACKGROUND

[0002] CNC machine tool (Computer Numerical Control Machine Tool), also known as numerical control machine tool, is a kind of automatic machine tool equipped with program control system.The control system can logically process program with control code or other symbolic instruction specification, and its code is translated into code, that is, code number is used to express, and is input into numerical control device through information carrier.Various control signals are sent by numerical control device after operation processing, and the action of machine tool is controlled, and the shape and size required by drawing are automatically processed into parts, and the cutting, carving, drilling and other processing tasks of metal, plastic, wood and other materials can be efficiently and accurately completed.

[0003] Machine tool protective door is an important component of CNC machine tool, mainly used for protecting operator safety, isolating debris and cooling liquid generated during processing, and also having the effect of reducing noise and dust diffusion.Machine tool protective door is also a link that needs attention during processing, and protective door needs to be closed before processing to prevent production accidents.

[0004] The quality of machine tool protective door is closely related to the working environment of staff, wherein, if the observation window on machine tool protective door is damaged, the protective effect and sound insulation effect will be greatly reduced, and the observation window on existing machine tool is usually fixed by bolt, so that rust will occur on bolt during long-term use, and the rusted bolt will affect the speed of disassembling observation window by staff during replacing protective window, and the working efficiency is reduced, therefore, the utility model provides a kind of protective door for CNC machine tool to solve the above technical problems. UTILITY MODEL CONTENTS

[0005] The utility model aims at realizing the following mode: a kind of protective door for CNC machine tool, including installation base and fixed top plate, fixed top plate is set at the top of installation base, one end of installation base top surface is connected with one end of fixed top plate by connecting rod, installation plate is equipped between installation base and fixed top plate, the middle part of installation base is equipped with replacement assembly for cooperating with installation plate, the middle part of installation plate is equipped with observation window plate, the top surface of installation plate is equipped with installation port matched with observation window plate;

[0006] The replacement assembly comprises a control rack and a driving gear, a mounting groove is formed in the top surface of the mounting base near one end of the connecting rod, the control rack is movably arranged in the mounting groove, an avoiding groove is arranged on one side of the mounting groove, the avoiding groove is communicated with the mounting groove, the driving gear is arranged in the avoiding groove and is engaged with the control rack, a locking column is arranged on the top of the control rack and extends towards the fixed top plate, a locking groove matched with the locking column is arranged on the bottom surface of the mounting plate near the locking column, a rotating handle is arranged on the outer side surface of the mounting base near the avoiding groove, and the rotating handle is connected with the driving gear through the mounting base.

[0007] In the above description, as a further scheme, the rotating handle is connected with the driving gear through a transmission shaft, both ends of the transmission shaft are connected with the mounting base through rotating bearings, a positioning protrusion is arranged on one end of the transmission shaft near the driving gear, a transmission groove matched with the positioning protrusion is arranged on the middle of the driving gear near the positioning protrusion, a limiting clamping groove is formed on the other end of the transmission shaft away from the driving gear, a locking sleeve is arranged on the outer side surface of the mounting base near the transmission shaft, and the locking sleeve is movably arranged on the transmission shaft; the locking sleeve can prevent the driving gear from rotating when not in use.

[0008] In the above description, as a further scheme, a clamping block matched with the limiting clamping groove is arranged on the middle of the locking sleeve near the limiting clamping groove, a locking protrusion is arranged on one side of the locking sleeve near the mounting base, a plug hole matched with the locking protrusion is arranged on the side surface of the mounting base near the locking protrusion, one end of the rotating handle near the transmission shaft is detachably connected with the transmission shaft, external threads are arranged on one end of the transmission shaft near the rotating handle, a locking nut is threadedly connected on the rotating shaft near the external threads, and one side of the locking nut near the locking sleeve is attached to the locking sleeve; the locking nut can prevent the locking sleeve from being separated.

[0009] In the above description, as a further scheme, a cleaning scraper is swingably arranged on the top of the side of the mounting base away from the rotating handle, one end of the cleaning scraper extends towards the observation window plate, the other end of the cleaning scraper near the observation window plate is attached to the observation window plate, a rotating shaft is arranged on the end of the cleaning scraper near the mounting base, and the rotating shaft is rotatably connected with the mounting base; the cleaning scraper is used to provide cleaning effect on the observation window plate.

[0010] In the above description, as a further scheme, one end of the rotating shaft away from the cleaning scraper extends towards the side of the mounting base away from the cleaning scraper, a swing handle is arranged on the side of the mounting base away from the cleaning scraper, and the swing handle is detachably connected with the rotating shaft; the swing handle can be used by the worker to control the cleaning scraper to clean the observation window.

[0011] In the above description, further scheme is that the top surface of the mounting base is provided with a limiting guide plate near the position of the mounting plate, one side of the limiting guide plate is provided with a holding handle, two ends of the holding handle are connected with the mounting base and the limiting guide plate respectively, and the bottom surface of the mounting base is distributed with sliding guide wheels for sliding; the limiting guide plate is used for providing the mounting effect of the mounting plate.

[0012] Compared with the prior art, the utility model discloses the beneficial effects are: through the design of mounting plate, observation window board and replacement assembly, when the observation window is damaged, the staff can control the rotating handle, and the rotating handle drives the driving gear to rotate, and the driving gear drives the control rack and the locking column to move towards the reverse direction of the mounting groove, that is, the locking column is separated from the locking groove, after separation, the staff can extract the mounting plate and the observation window board from between the fixed top plate and the mounting base, and after extraction, the observation window board can be taken out through the mounting port, and after taking out, the new observation window board can be replaced, without using the bolt to install, at the same time, the speed of the staff replacing the observation window board is improved, and the work efficiency is improved. BRIEF DESCRIPTION OF DRAWINGS

[0013] Figure 1 It is a three-dimensional structure schematic diagram of the protective door for CNC machine tool of the utility model;

[0014] Figure 2 It is a three-dimensional structure schematic diagram of the protective door for CNC machine tool of the utility model from another perspective;

[0015] Figure 3 It is a structure exploded schematic diagram of the protective door for CNC machine tool of the utility model;

[0016] Figure 4 It is a structure exploded schematic diagram of the protective door for CNC machine tool of the utility model from another perspective;

[0017] Figure 5 It is an internal structure schematic diagram of the protective door for CNC machine tool of the utility model;

[0018] Figure 6 It is a structure exploded schematic diagram of the replacement assembly in the protective door for CNC machine tool of the utility model;

[0019] Figure 7 It is a three-dimensional structure schematic diagram of the protective door for CNC machine tool of the utility model Figure 3 Partial enlarged schematic diagram of structure A in the utility model;

[0020] In the drawing: 1-mounting base, 2-fixed top plate, 3-connection rod, 4-mounting plate, 5-observation window board;

[0021] 6-mounting port, 7-control rack, 8-driving gear, 9-mounting groove, 10-avoiding groove, 11-locking column;

[0022] 12-locking slot, 13-rotary handle, 14-transmission shaft, 15-rotary bearing, 16-positioning protrusion;

[0023] 17-transmission slot, 18-limiting clamping groove, 19-locking sleeve, 20-clamping block, 21-locking protrusion, 22-insert hole;

[0024] 23-external thread, 24-locking nut, 25-cleaning scraper, 26-rotary shaft, 27-oscillating handle;

[0025] 28-limiting guide plate, 29-gripping handle, 30-sliding guide wheel. DETAILED DESCRIPTION

[0026] The utility model will be described in further detail below in combination with the drawings and specific embodiments.

[0027] In this embodiment, please refer to Figures 1-7 A protective door for a CNC machine tool, comprising a mounting base 1 and a fixed top plate 2, the fixed top plate 2 is arranged above the mounting base 1, one end of the top surface of the mounting base 1 is connected to one end of the fixed top plate 2 through a connecting rod 3, a mounting plate 4 is arranged between the mounting base 1 and the fixed top plate 2, the middle part of the mounting base 1 is provided with a replacement assembly for cooperating with the mounting plate 4, the middle part of the mounting plate 4 is provided with an observation window plate 5, and the top surface of the mounting plate 4 is provided with a mounting opening 6 matched with the observation window plate 5.

[0028] The replacement assembly comprises a control rack 7 and a driving gear 8, the top surface of the mounting base 1 is provided with a mounting groove 9 near one end of the connecting rod 3, the control rack 7 is movably arranged in the mounting groove 9, one side of the mounting groove 9 is provided with an avoiding groove 10, the avoiding groove 10 is in communication with the mounting groove 9, the driving gear 8 is arranged in the avoiding groove 10, and the driving gear 8 is engaged with the control rack 7, the top of the control rack 7 is provided with a locking column 11, the locking column 11 extends towards the fixed top plate 2, the bottom surface of the mounting plate 4 is provided with a locking slot 12 matched with the locking column 11 near the position of the locking column 11, and the outer side surface of the mounting base 1 is provided with a rotary handle 13 near the position of the avoiding groove 10, the rotary handle 13 penetrates through the mounting base 1 and is connected with the driving gear 8.

[0029] The rotary handle 13 is connected with the driving gear 8 through a transmission shaft 14, both ends of the transmission shaft 14 are connected with the mounting base 1 through rotary bearings 15, one end of the transmission shaft 14 near the driving gear 8 is provided with a positioning protrusion 16, the middle part of the driving gear 8 is provided with a transmission slot 17 matched with the positioning protrusion 16 near the position of the positioning protrusion 16, one end of the transmission shaft 14 away from the driving gear 8 is provided with a limiting clamping groove 18, and the outer side surface of the mounting base 1 is provided with a locking sleeve 19 near the position of the transmission shaft 14, the locking sleeve 19 is movably arranged on the transmission shaft 14.

[0030] The middle part of the locking sleeve 19 is provided with a clamping block 20 matched with the limiting clamping groove 18, the side of the locking sleeve 19 close to the mounting base 1 is provided with a locking protruding column 21, the side of the mounting base 1 close to the locking protruding column 21 is provided with a plug hole 22 matched with the locking protruding column 21, the end of the transmission handle 13 close to the transmission shaft 14 is detachably connected with the transmission shaft 14, the end of the transmission shaft 14 close to the transmission handle 13 is provided with external threads 23, the locking nut 24 is threadedly connected with the transmission shaft 14 close to the external threads 23, and the side of the locking nut 24 close to the locking sleeve 19 is attached to the locking sleeve 19.

[0031] The top of the side of the mounting base 1 away from the rotating handle 13 is swingably provided with a cleaning scraper 25, one end of the cleaning scraper 25 extends to the direction of the observation window plate 5, the end of the cleaning scraper 25 close to the observation window plate 5 is attached to the observation window plate 5, and the end of the cleaning scraper 25 close to the mounting base 1 is provided with a rotating shaft 26.

[0032] The end of the rotating shaft 26 away from the cleaning scraper 25 extends to the side of the mounting base 1 away from the cleaning scraper 25, the side of the mounting base 1 away from the cleaning scraper 25 is provided with a swing handle 27, and the swing handle 27 is detachably connected with the rotating shaft 26.

[0033] The top surface of the mounting base 1 close to the mounting plate 4 is provided with a limiting guide plate 28, one side of the limiting guide plate 28 is provided with a holding handle 29, both ends of the holding handle 29 are connected with the mounting base 1 and the limiting guide plate 28 respectively, and the bottom surface of the mounting base 1 is provided with sliding guide wheels 30 for sliding.

[0034] The installation process of the utility model is as follows: when installing, first, the intact observation window plate 5 is placed into the mounting plate 4 from the installation opening 6, then the mounting plate 4 is placed between the limiting guide plates 28 and is pushed to the direction of the connecting rod 3.

[0035] Then the rotating handle 13 is controlled, the rotating handle 13 drives the driving gear 8 to rotate, the driving gear 8 drives the control rack 7 and the locking column 11 to ascend, so that the locking column 11 extends into the locking groove 12, the mounting plate 4 is locked, the locking sleeve 19 is connected with the limiting clamping groove 18 on the transmission shaft 14 through the clamping block 20, the locking protruding column 21 on the locking sleeve 19 is matched with the plug hole 22 after connection, finally, the locking nut 24 is tightened, and the transmission shaft 14 is locked.

[0036] In order to make the purpose, technical scheme and advantages of the embodiments of the utility model clearer, the technical scheme of the utility model will be described clearly and completely in combination with the drawings below. Obviously, the described embodiments are part of the embodiments of the utility model, rather than all the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by the person skilled in the art without making creative labor belong to the protection scope of the utility model.

[0037] In addition, in the description of the embodiments of the utility model, unless explicitly specified and limited, the terms "mounting", "connection", "connecting" should be understood broadly, for example, it can be fixed connection, or detachable connection, or integrally connected; it can be mechanical connection, or electrical connection; it can be directly connected, or indirectly connected through intermediate medium, or the communication inside two elements. For the person skilled in the art, the specific meaning of the above terms in the utility model can be understood according to the specific circumstances. In the description of the utility model, it should be explained that the orientation or position relationship indicated by the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer" is based on the orientation or position relationship shown in the drawings, and is only for the convenience of describing the utility model and simplifying the description, and therefore cannot be understood as indicating or implying that the indicated device or element must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as limiting the utility model. In addition, the terms "first", "second", "third" are only for the purpose of description, and cannot be understood as indicating or implying relative importance.

[0038] Finally, it should be explained that: the above embodiments are only specific embodiments of the utility model, used to illustrate the technical scheme of the utility model, rather than limit it, and the protection scope of the utility model is not limited to this. Although the utility model has been described in detail with reference to the foregoing embodiments, the person skilled in the art should understand that any person skilled in the art can make modifications or easily think of changes to the technical scheme recorded in the foregoing embodiments within the technical range disclosed by the utility model, or make equivalent replacement to some technical features; and these modifications, changes or replacement do not make the essence of the corresponding technical scheme deviate from the spirit and range of the technical scheme of the embodiments of the utility model, and all should be covered in the protection scope of the utility model. Therefore, the protection scope of the utility model should be subject to the protection scope of the claims.

Claims

1. A protective door for a CNC machine tool, comprising a mounting base and a fixed top plate, the fixed top plate being arranged above the mounting base, one end of the top surface of the mounting base being connected to one end of the fixed top plate by a connecting rod, characterized in that: The installation base and the fixed top plate are provided with an installation plate, the middle part of the installation base is provided with a replacement assembly for cooperating with the installation plate, the middle part of the installation plate is provided with an observation window plate, and the top surface of the installation plate is provided with an installation opening matched with the observation window plate. The replacement assembly comprises a control rack and a driving gear, the top surface of the installation base is provided with an installation groove near one end of the connecting rod, the control rack is movably arranged in the installation groove, one side of the installation groove is provided with an avoiding groove in communication with the installation groove, the driving gear is arranged in the avoiding groove and is in mesh with the control rack, the top of the control rack is provided with a locking column extending towards the fixed top plate, the bottom surface of the installation plate is provided with a locking groove matched with the locking column near the locking column, and the outer side surface of the installation base is provided with a rotating handle near the avoiding groove, the rotating handle penetrates through the installation base and is connected with the driving gear.

2. A safety door for a CNC machine tool according to claim 1, characterised in that: The rotating handle is connected with the driving gear through a transmission shaft, both ends of the transmission shaft are connected with the installation base through rotating bearings, one end of the transmission shaft near the driving gear is provided with a positioning protrusion, the middle part of the driving gear near the positioning protrusion is provided with a transmission groove matched with the positioning protrusion, one end of the transmission shaft away from the driving gear is provided with a limiting clamping groove, and the outer side surface of the installation base near the transmission shaft is provided with a locking sleeve movably arranged on the transmission shaft.

3. A safety door for a CNC machine tool according to claim 2, characterised in that: The middle part of the locking sleeve near the limiting clamping groove is provided with a clamping block matched with the limiting clamping groove, one side of the locking sleeve near the installation base is provided with a locking protruding column, the side surface of the installation base near the locking protruding column is provided with a insertion hole matched with the locking protruding column, one end of the rotating handle near the transmission shaft is detachably connected with the transmission shaft, the end of the transmission shaft near the rotating handle is provided with external threads, and a locking nut is threadedly connected with the transmission shaft near the external threads.

4. A safety door for a CNC machine tool as claimed in claim 1, characterised in that: The top of the side of the installation base away from the rotating handle is swingably provided with a cleaning scraper, one end of the cleaning scraper extends towards the observation window plate, the end of the cleaning scraper near the observation window plate is attached to the observation window plate, and the end of the cleaning scraper near the installation base is provided with a rotating shaft rotatably connected with the installation base.

5. A safety door for a CNC machine tool according to claim 4, characterised in that: The end of the rotating shaft away from the cleaning scraper extends towards the side of the installation base away from the cleaning scraper, the side of the installation base away from the cleaning scraper is provided with a swing handle, and the swing handle is detachably connected with the rotating shaft.

6. A safety door for a CNC machine tool as claimed in claim 1, characterised in that: The top surface of the installation base near the installation plate is provided with a limiting guide plate, one side of the limiting guide plate is provided with a holding handle, both ends of the holding handle are connected with the installation base and the limiting guide plate respectively, and the bottom surface of the installation base is provided with sliding guide wheels for sliding.