Folding protective door of numerical control machine tool

Abstract

The utility model relates to the field of machine tool protective doors, in particular to a folding protective door of a numerical control machine tool, which comprises a machine tool shell and a folding guide component, an operation window is arranged on one side of the machine tool shell, and a switch guide rod and a linear wheel rail are horizontally arranged at the upper end and the lower end of one side of the operation window in the machine tool shell respectively. A common single-protective-door and double-protective-door structure of the numerical control machine tool is designed into a four-protective-door or more-protective-door structure, then the main protective doors and the auxiliary protective doors are connected in a foldable mode through the rotating hinges, when the air cylinders control the two main protective doors to conduct opening and closing control, wires of the auxiliary protective doors can be folded through the folding guide assemblies, and therefore the protective doors can be folded. When the operation window is completely exposed, the main protection door and the auxiliary protection door are attached to the two side walls in the machine tool shell in a right-angle folding mode, space is saved, and meanwhile the supporting movement smoothness and stability of the auxiliary protection door can be improved through the arrangement of the installation spherical shell and the supporting balls.

Description

Technical Field

[0001] This utility model relates to the field of machine tool protective doors, specifically a folding protective door for CNC machine tools. Background Technology

[0002] During CNC machine tool processing, protective doors can prevent operators from being injured by flying chips, coolant, and potentially broken or ejected tools. They isolate the dangerous areas of the machine tool from the operators, reducing the probability of accidents. Protective doors are usually equipped with transparent observation windows, allowing operators to observe the processing inside the machine tool in real time without opening the door.

[0003] In the field of multi-spindle vertical CNC machine tools, in order to facilitate the installation and handling of multiple workpieces, a large window area needs to be reserved. The existing vertical machine tool protective door will occupy a certain window area after being installed with the machine tool, which will affect the operator's workpiece placement and use. If a larger working window area is to be reserved, the installation and sliding mechanism of the door protection needs to be enlarged, resulting in a larger equipment size and inconvenience in use. Utility Model Content

[0004] The purpose of this utility model is to provide a folding protective door for CNC machine tools to solve the problems mentioned in the background art.

[0005] To achieve the above objectives, this utility model provides the following technical solution: a folding protective door for a CNC machine tool, comprising:

[0006] The machine tool housing has an operation window on one side. Inside the machine tool housing, a switch guide rod and a linear wheel rail are horizontally arranged at the upper and lower ends of the operation window. Folding door assemblies are arranged on both sides of the machine tool housing near the operation window. Each folding door assembly includes a main protective door and a secondary protective door. The upper and lower ends of the two main protective doors are connected to the switch guide rod and the linear wheel rail, respectively.

[0007] The folding guide assembly includes two folding guide frames, which are horizontally and symmetrically arranged on both sides of the upper end of the machine tool housing near the operation window by bolts. The auxiliary protective door is slidably connected to the folding guide frames by a sliding support assembly, which includes a movable guide wheel and a mounting ball shell.

[0008] Preferably, each of the main protective doors is provided with a push-pull control bracket at its upper end, and both push-pull control brackets are movably sleeved with a switch guide rod. Each of the two main protective doors is provided with two track wheels symmetrically at its lower end, and the two track wheels are respectively rolled on the upper end of a linear wheel rail. Inside the machine tool housing, above the operating window, two switch control cylinders are symmetrically provided, and the two switch control cylinders are respectively connected to one side of the two push-pull control brackets.

[0009] Preferably, the secondary protective doors are all movably mounted on one side of the main protective door via rotating hinges. Each secondary protective door has a mounting bracket on its upper side, and each mounting bracket has a U-shaped connecting groove on its upper side. One side of each of the two folding guide frames is inserted into the U-shaped connecting groove of the two mounting brackets.

[0010] Preferably, the lower end of the folding guide frame is provided with a movable guide box, and the lower end of the U-shaped connecting groove of the mounting bracket is provided with movable guide wheels through the mounting shaft, and the movable guide wheels are inserted into the movable guide box.

[0011] Preferably, the upper end of the mounting bracket is provided with a rotating support, and the center of the rotating support is provided with a prismatic groove through a U-shaped connecting groove. The mounting spherical shell is located above the U-shaped connecting groove. The upper center of the mounting spherical shell is provided with a prismatic insert rod, which is movably inserted into the prismatic groove of the rotating support. The upper center of the prismatic insert rod is provided with an adjusting screw rod, and the upper end of the prismatic groove of the rotating support is provided with an adjusting screw sleeve, which is set by threaded connection to the adjusting screw rod.

[0012] Preferably, the lower end of the mounting spherical shell is provided with a first ball groove, and a support ball is rotatably provided in the first ball groove. The lower end of the support ball passes through the first ball groove and contacts the upper end of the folding guide frame. A diversion groove is provided in the mounting spherical shell at the upper end of the first ball groove. A plurality of second ball grooves are provided in a circular array between the first ball groove and the diversion groove. Auxiliary balls are movably inserted into each of the plurality of second ball grooves, and one side of each of the plurality of auxiliary balls is in rolling contact with one side of the support ball.

[0013] Preferably, the center of the upper end of the diversion channel is provided with an oil drip sealing groove through the center of the prismatic insert rod and the center of the adjusting screw. An oil bottle is threadedly inserted into the upper end of the oil drip sealing groove. A porous fiber rod is vertically inserted into the porous fiber rod, and the upper end of the porous fiber rod is used to seal the mouth of the oil bottle.

[0014] Compared with the prior art, the beneficial effects of this utility model are:

[0015] The common single and double protective door structures of CNC machine tools are designed into four or more protective door structures. The main protective door and the auxiliary protective door are then foldably connected by a rotating hinge. When the cylinder controls the opening and closing of the two main protective doors, the auxiliary protective door can be folded through the folding guide assembly. When the operation window is fully exposed, the main and auxiliary protective doors are folded at right angles and fit against the inner side walls of the machine tool housing, saving space. At the same time, the installation of ball shells and supporting ball bearings can improve the smoothness and stability of the auxiliary protective door's support movement. Attached Figure Description

[0016] Figure 1 This is a three-dimensional structural diagram of the present invention;

[0017] Figure 2 This is a front view of the connection between the main protective door and the secondary protective door of this utility model;

[0018] Figure 3 This is a schematic diagram of the connection between the main protective door and the secondary protective door of this utility model.

[0019] Figure 4 This utility model Figure 3 Schematic diagram of part A;

[0020] Figure 5 This is a schematic diagram showing the connection between the mounting bracket and the folding guide frame of this utility model;

[0021] Figure 6 This is a side sectional view of the connection between the folding guide frame and the mounting bracket of this utility model;

[0022] Figure 7 This utility model Figure 6 Schematic diagram of part B;

[0023] Figure 8 This utility model Figure 7 Schematic diagram of part C.

[0024] In the diagram: 1. Machine tool housing; 2. Operation window; 3. Main protective door; 4. Secondary protective door; 5. Push-pull control bracket; 6. Switch guide rod; 7. Switch control cylinder; 8. Folding guide frame; 9. Hanging bracket; 10. Moving guide box; 11. U-shaped connecting groove; 12. Moving guide wheel; 13. Rotary support; 14. Adjusting screw sleeve; 15. Prism-shaped insert rod; 16. Mounting ball shell; 17. Adjusting screw; 18. Support ball; 19. Diverting groove; 20. Auxiliary ball; 21. Oil drip sealing groove; 22. Oil bottle; 23. Porous fiber rod; 24. Linear wheel rail. Detailed Implementation

[0025] To make the objectives, technical solutions, and advantages of this utility model clear and complete, the embodiments of this utility model will be further described in detail below with reference to the accompanying drawings. It should be understood that the specific embodiments described herein are only some, not all, embodiments of this utility model, and are merely used to explain the embodiments of this utility model. They are not intended to limit the embodiments of this utility model. All other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this utility model.

[0026] Please see the appendix Figures 1-8 This application provides the following technical solutions.

[0027] Example 1: A folding protective door for a CNC machine tool includes a machine tool housing 1. An operation window 2 is provided on one side of the machine tool housing 1. A switch guide rod 6 and a linear wheel rail 24 are horizontally arranged at the upper and lower ends of the side of the operation window 2 inside the machine tool housing 1, respectively. Folding door assemblies are provided on both sides of the machine tool housing 1 near the operation window 2. Each folding door assembly includes a main protective door 3 and a secondary protective door 4. The upper and lower ends of the two main protective doors 3 are connected to the switch guide rod 6 and the linear wheel rail 24, respectively. A push-pull control bracket 5 is provided at the upper end of each main protective door 3. Both push-pull control brackets 5 are movably sleeved with the switch guide rod 6. The lower ends of the rod 6 and the two main protective doors 3 are symmetrically equipped with two track wheels, which are respectively rolled on the upper end of the linear wheel rail 24. Inside the machine tool housing 1, above the operation window 2, there are two switch control cylinders 7 symmetrically arranged. The two switch control cylinders 7 are respectively connected to one side of the two push-pull control brackets 5. When the main protective doors 3 are used for opening and closing, the two switch control cylinders 7 are used to control the horizontal push and pull of the two main protective doors 3, so that the main protective doors 3 can slide smoothly along the switch guide rod 6 and the linear wheel rail 24, thereby completely exposing the operation window 2, which is convenient for the operator to perform workpiece assembly and disassembly operations.

[0028] A folding guide assembly is provided to guide the folding of the secondary protective door 4. The folding guide assembly includes two folding guide frames 8, which are horizontally and symmetrically bolted to the upper ends of both sides of the machine tool housing 1 near the operating window 2. The secondary protective door 4 is slidably connected to the folding guide frames 8 via a sliding support assembly, which includes a movable guide wheel 12 and a mounting ball housing 16. The secondary protective door 4 is movably mounted on one side of the main protective door 3 via a rotating hinge. Each secondary protective door 4 has a mounting bracket 9 on its upper side, and each mounting bracket 9 has a U-shaped connecting groove 11 on its upper side. The two folding guide frames 8 are respectively inserted into one side of the mounting bracket 8. Within the U-shaped connecting grooves 11 of the two mounting brackets 9, the lower end of the folding guide frame 8 is provided with a movable guide box 10. The lower end of each mounting bracket 9 within the U-shaped connecting groove 11 is provided with a movable guide wheel 12 via a mounting shaft, and the movable guide wheel 12 is inserted into the movable guide box 10. When the main protective door 3 is horizontally away from the operating window 2, in order to save space, the secondary protective door 4 can be vertically folded at the side wall position where the machine tool housing 1 is perpendicular to the operating window 2. When the main protective door 3 is away from the operating window 2, the hinge between the secondary protective door 4 and the main protective door 3 can rotate due to the cooperation and guidance of the movable guide wheel 12 and the movable guide box 10.

[0029] The upper end of the mounting bracket 9 is provided with a rotating support 13. A prismatic groove is formed in the center of the rotating support 13, which is connected to a U-shaped connecting groove 11. A mounting ball shell 16 is positioned above the U-shaped connecting groove 11. A prismatic insert 15 is vertically positioned at the center of the upper end of the mounting ball shell 16. The prismatic insert 15 is movably inserted into the prismatic groove of the rotating support 13. An adjusting screw 17 is vertically positioned at the center of the upper end of the prismatic insert 15. An adjusting screw sleeve 14 is rotatably positioned at the upper end of the prismatic groove of the rotating support 13. The adjusting screw sleeve 14 is threadedly connected to the adjusting screw 17. The mounting ball... The lower end of the shell 16 is provided with a first ball groove, and a support ball 18 is rotatably provided in the first ball groove. The lower end of the support ball 18 passes through the first ball groove and contacts the upper end of the folding guide frame 8. Due to the anti-rotation design of the prismatic insert rod 15 inserted into the prismatic groove, the lifting control of the mounting shell 16 and the support ball 18 can be achieved by adjusting the threaded connection of the adjusting screw 17 through the adjusting sleeve 14, thereby realizing the height adjustment of the secondary protective door 4 and distributing the weight of the secondary protective door 4. At the same time, the rolling support ball 18 can improve the sliding stability of the secondary protective door 4.

[0030] A flow divider 19 is provided at the upper end of the first ball groove inside the mounting shell 16. A plurality of second ball grooves are arranged in a ring array between the first ball groove and the flow divider 19. Auxiliary balls 20 are movably inserted into each of the plurality of second ball grooves. One side of each of the plurality of auxiliary balls 20 is in rolling contact with one side of the support ball 18. The plurality of auxiliary balls 20 provide rolling support for the support ball 18, which can reduce the wear between the support ball 18 and the first ball groove and improve the service life of the contact between the support ball 18 and the folding guide frame 8.

[0031] In Example 2, based on Example 1, an oil dripping sealing groove 21 is provided at the center of the upper end of the diversion groove 19, through which the prismatic insert 15 and the adjusting screw 17 pass. An oil bottle 22 is threadedly inserted into the upper end of the oil dripping sealing groove 21. A porous fiber rod 23 is vertically inserted into the porous fiber rod 23, and the upper end of the porous fiber rod 23 is used to seal the mouth of the oil bottle 22. The porous fiber rod 23 allows the lubricating oil in the oil bottle 22 to be retained in a porous manner, so that the lubricating oil in the oil bottle 22 drips slowly into the diversion groove 19 for a long time, thereby achieving continuous lubrication of the supporting ball 18 and several auxiliary ball 20 and improving the smoothness of the support and sliding of the secondary protective door 4.

[0032] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A folding protective door for a numerically controlled machine tool, characterized in that, Include: Machine tool shell (1), the side of machine tool shell (1) is provided with operation window (2), the upper and lower ends of the machine tool shell (1) are respectively provided with switch guide rod (6) and straight line wheel rail (24) on the side of operation window (2), the two sides of machine tool shell (1) are provided with folding door group near operation window (2), folding door group includes main protection door (3) and auxiliary protection door (4), and the upper and lower ends of two main protection doors (3) are connected with switch guide rod (6) and straight line wheel rail (24) respectively; Folding guide assembly, the folding guide assembly includes two folding guide racks (8), the two folding guide racks (8) are respectively provided on the two sides of the upper end of machine tool shell (1) near operation window (2) by bolt, the auxiliary protection door (4) is connected with the folding guide rack (8) by sliding support assembly, the sliding support assembly includes moving guide wheel (12) and installation ball shell (16).

2. A folding guard door for a numerically controlled machine tool according to claim 1, characterised in that: The upper end of the main protection door (3) is provided with a push-pull control support (5), the two push-pull control supports (5) are movably sleeved with the switch guide rod (6), the lower end of the two main protection doors (3) is symmetrically provided with two track wheels, the two track wheels are respectively arranged on the upper end of the straight line wheel rail (24), the machine tool shell (1) is provided with two switch control cylinders (7) symmetrically above the operation window (2), and the two switch control cylinders (7) are connected with one side of the two push-pull control supports (5).

3. A folding guard door for a numerically controlled machine tool according to claim 2, characterised in that: The auxiliary protection door (4) is movably arranged on one side of the main protection door (3) through a rotary hinge, one side of the upper end of the auxiliary protection door (4) is provided with a hanging bracket (9), one side of the upper end of the hanging bracket (9) is provided with a U-shaped connecting groove (11), and one side of the two folding guide racks (8) is respectively inserted into the U-shaped connecting groove (11) of the two hanging brackets (9).

4. A folding guard door for a numerically controlled machine tool according to claim 3, characterised in that: The lower end of the folding guide rack (8) is provided with a moving guide box (10), the lower end of the U-shaped connecting groove (11) of the hanging bracket (9) is rotatably provided with a moving guide wheel (12) through a mounting shaft, and the moving guide wheel (12) is inserted into the moving guide box (10).

5. A folding guard door for a numerically controlled machine tool according to claim 4, characterised in that: The upper end of the hanging bracket (9) is provided with a rotating support (13), the rotating support (13) is provided with a prismatic groove in the center and communicates with the U-shaped connecting groove (11), the installation ball shell (16) is arranged above the U-shaped connecting groove (11), the upper end of the installation ball shell (16) is vertically provided with a prismatic plug rod (15), the prismatic plug rod (15) is movably inserted into the prismatic groove of the rotating support (13), the upper end of the prismatic plug rod (15) is vertically provided with an adjusting screw (17), the prismatic groove of the rotating support (13) is rotatably provided with an adjusting screw sleeve (14) at the upper end, and the adjusting screw sleeve (14) is provided by screwing the adjusting screw (17).

6. A folding guard door for a numerically controlled machine tool according to claim 5, characterised in that: The lower end of the installation spherical shell (16) is provided with a first ball groove, a supporting ball (18) is rotatably arranged in the first ball groove, the lower end of the supporting ball (18) penetrates the first ball groove and is in contact with the upper end of the folding guide frame (8), a shunt groove (19) is arranged in the upper end of the first ball groove in the installation spherical shell (16), a plurality of second ball grooves are annularly arranged between the first ball groove and the shunt groove (19), a plurality of auxiliary balls (20) are movably inserted in the plurality of second ball grooves, and one side of each of the plurality of auxiliary balls (20) is in rolling contact with one side of the supporting ball (18).

7. A folding guard door for a numerically controlled machine tool according to claim 6, characterised in that: A drip oil blocking groove (21) is arranged in the center of the upper end of the shunt groove (19) and penetrates the centers of the prismatic insertion rod (15) and the adjusting screw (17), an oil bottle (22) is threadedly inserted at the upper end of the drip oil blocking groove (21), a porous fiber rod (23) is vertically inserted in the porous fiber rod (23), and the upper end of the porous fiber rod (23) blocks the bottle opening of the oil bottle (22).

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