A two-stage automatic door for a vertical machining center

Abstract

The present invention provides a two-stage automatic door for a vertical machining center, which belongs to the field of machine tool doors. It includes a door frame, a placement cavity is provided in the door frame, a first-stage door and a second-stage door that can be moved along the vertical direction are movably connected in the placement cavity, the first-stage door and the second-stage door are abutted and movably connected, a protective mechanism is provided on each side of the placement cavity, each protective mechanism includes a protective plate rotatably connected to the door frame, the two protective plates extend into the placement cavity and are movably connected to the first-stage door and the second-stage door, and the protective plates are horizontally arranged in the placement cavity, a long card-joining slide and a short card-joining slide are connected on both sides of the placement cavity, the two sides of the first-stage door extend into the two long card-joining slides, the second-stage door extends into the two short card-joining slides, and a height sensing lamp is provided on the bottom of the end surface of the second-stage door away from the first-stage door.

Description

Technical Field

[0001] The invention belongs to the field of machine tool doors, and in particular relates to a two-stage automatic door for a vertical machining center. Background Art

[0002] In the operating doors of existing machine tools, the movement of the doors is often to move up and down in the vertical direction. Generally, there is only one door panel on a machine tool, and the maximum height that can be opened is relatively low. In addition, since its function is only to divide the space into several areas and each area can stack different goods and transport and manage them through the machine tool protection door, the setting structure of the machine tool protection door is relatively simple, as long as the machine tool protection door can move up and down. In order to reduce the production cost, the guide connection structure in the machine tool protection door is often exposed to the outside, and the transported goods are sometimes not only large and heavy, but also angular and irregular in shape. During the movement of the goods, the guide connection structure will be squeezed or hit, causing damage to the guide connection structure and making the machine tool protection door unable to operate normally. In addition, when it is necessary to place the goods, the door is moved upward and the passage is opened, and the goods are passed through the door and placed on the other side of the door. In this process, the goods need to be moved by workers or mechanical arms and it takes a certain amount of time. If the connection structure between the door and the door frame is suddenly damaged or broken, it will cause the door to lose weight and move downward, damaging the goods or crushing the staff.

[0003] For example, a Chinese patent document discloses an automatic lifting door [patent application number: CN201320200252.X], which includes two guide rails arranged vertically opposite to each other, the cross section of the guide rails is in the shape of a "[" character, and a door body is arranged in the guide rails, characterized in that: it also includes a driving mechanism for driving the door body to rise and fall in the guide rails. The automatic lifting door of the present invention automatically rises and falls in the guide rails under the drive of the driving mechanism. The driving mechanism can be a motor drive system or a cylinder drive system controlled by an electromagnetic reversing valve. The automatic lifting door of the present invention replaces the traditional door with a two-side opening or left-right push-pull design, has a small footprint, is easy to operate, and has good sound insulation and heat insulation effects. It is suitable for clean rooms, factories, laboratories and other places. The device has only one door panel, the maximum height it can open is low, and there is no component to prevent the connection structure between the door and the door frame from being suddenly damaged or broken, which will cause the door to lose weight and move downward to damage the goods or crush the staff, and the guide connection structure of the device is exposed to the outside, which is easy to hit and damage the guide connection structure when moving the goods. Summary of the invention

[0004] The object of the present invention is to provide a two-stage automatic door for a vertical machining center in view of the above problems.

[0005] In order to achieve the above object, the present invention adopts the following technical solutions:

[0006] A two-stage automatic door of a vertical machining center comprises a door frame, wherein a placement cavity is provided in the door frame, wherein a first section door and a second section door which can be moved along a vertical direction are movably connected in the placement cavity, wherein the first section door abuts against and is movably connected to the second section door, wherein a protective mechanism is provided on each side of the placement cavity, wherein each protective mechanism comprises a protective plate rotatably connected to the door frame, wherein the two protective plates extend into the placement cavity and are movably connected to the first section door and the second section door respectively, and wherein the protective plates are horizontally arranged in the placement cavity, wherein a long card-joining slide groove and a short card-joining slide groove are connected to each side of the placement cavity, wherein the two sides of the first section door extend into the two long card-joining slide grooves respectively, and the two sides of the second section door extend into the two short card-joining slide grooves respectively, and a height sensing lamp is provided on the bottom of the end surface of the second section door away from the first section door.

[0007] In the above-mentioned two-section automatic door of a vertical machining center, the first section of the door is provided with two sliding grooves, the two sliding grooves are respectively located at the two ends of the first section of the door, and the sliding grooves are respectively located in the two door frame frames, and the second section of the door is provided with a sliding rod corresponding to the sliding grooves one by one, and there is a gap between the bottom of the sliding groove and the bottom of the first section of the door.

[0008] In the above-mentioned two-stage automatic door of a vertical machining center, the protection mechanism also includes a connecting cavity arranged in the door frame, a rotating cavity is provided between the connecting cavity and the placement cavity, the rotating cavity is rotatably connected with a protection shaft, a torsion spring is provided between the protection shaft and the inner wall of the rotating cavity, the two ends of the protection shaft respectively extend into the placement cavity and the connecting cavity, one end of the protection shaft extending into the placement cavity is connected to the corresponding protection plate, the other end of the protection shaft is movably connected to a limiting rod that can move back and forth left and right along the horizontal direction of the door frame, and the limiting rod can extend into the protection shaft to form a clamping connection with the corresponding protection shaft.

[0009] In the above-mentioned two-stage automatic door of a vertical machining center, a clamping groove is provided in the end of the protective shaft extending into the connecting cavity, the shape of the clamping groove is matched with the end shape of the corresponding limiting rod, and the end of the clamping groove close to the corresponding limiting rod is step-shaped, and the end of the clamping groove away from the corresponding limiting rod is matched with the end of the limiting rod, and the cross-sectional area of ​​the step-shaped end close to the limiting rod is larger than the cross-sectional area of ​​the other end.

[0010] In the above-mentioned two-stage automatic door of a vertical machining center, each limiting rod has a protective cavity arranged in the door frame on the upper and lower sides respectively, and each protective cavity is provided with a protective block that can move repeatedly up and down along the vertical direction, and a pushing spring is provided between the protective block and the corresponding inner wall of the protective cavity, and a clamping structure is provided between the limiting rod and the protective block.

[0011] In the above-mentioned two-stage automatic door of a vertical machining center, the clamping structure includes a buckle groove arranged on the protective block, and the buckle groove has an extrusion surface arranged on the protective block on the side away from the placement cavity, and the upper and lower end faces of the limiting rod are respectively provided with a buckle block matched with the buckle groove.

[0012] In the above-mentioned two-stage automatic door of a vertical machining center, the cross-section of the buckle groove is an isosceles triangle shape, the buckle block is an isosceles trapezoid shape, and the inclination direction of the pushing surface is the same as the inclination direction of one of the inclined surfaces of the buckle block, and there is a gap between the buckle groove and the corresponding pushing surface.

[0013] In the above-mentioned two-stage automatic door of a vertical machining center, one side of the placement cavity has an action cavity arranged in the door frame, and a guide column is provided on the end wall of the action cavity close to the placement cavity. The action cavity and the guide column extend downward from the top of the placement cavity to the bottom of the door frame, and a long card-joining slide groove and a short card-joining slide groove on the same side of the guide column as the placement cavity are arranged on the guide column. A working groove is provided in the other end face of the guide column, and an action plate that can move back and forth up and down along the vertical direction is provided in the working groove, and the action plate is connected to the bottom of the first section of the door.

[0014] In the above-mentioned two-stage automatic door of a vertical machining center, a clamping slide rod movably connected to a long clamping slide groove or a short clamping slide groove is respectively provided on both sides of the first section door and the second section door, and a plurality of pulleys placed in sequence along the vertical direction are respectively provided at both ends of the clamping slide rod.

[0015] In the above-mentioned two-section automatic door of a vertical machining center, the length of the baffle is greater than or equal to the length of the first section door and the second section door. When the first section door is located at the top of the placement cavity, the bottom end of the baffle is lower than the bottom ends of the first section door and the second section door.

[0016] Compared with the prior art, the advantages of the present invention are:

[0017] 1. The present invention has a first door and a second door, which can be opened in stages, and the height of the door can be opened according to the height of the goods. A protective mechanism is also provided in the placement cavity. When the first door and the second door are moved to the upper side, the protective plate in the protective mechanism will be located directly below the first door or the second door and placed horizontally, which can prevent the first door or the second door from falling out of control and improve safety.

[0018] 2. Both sides of the placement cavity in the present invention are connected with a long card-joining slide groove and a short card-joining slide groove. The long card-joining slide groove and the short card-joining slide groove play a guiding role. At the same time, since the long card-joining slide groove and the short card-joining slide groove are hidden in the door frame of the door frame, it is prevented that the goods scratch or collide with the connection part during the movement, causing the connection part to be damaged so that the first section door and the second section door cannot move up and down normally.

[0019] 3. The protection block in the present invention is provided with a buckle groove, and the upper and lower end faces of the limiting rod are respectively provided with a block corresponding to and interlocking with the buckle groove. The buckle block on the limiting rod can extend into the corresponding buckle groove, thereby preventing the limiting rod from moving and preventing the limiting rod from being disengaged from the protective shaft. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 It is an overall schematic diagram of the present invention;

[0021] Figure 2 yes Figure 1 A schematic diagram of another direction in FIG.

[0022] Figure 3 yes Figure 1 Schematic cross-sectional view of AA in the figure;

[0023] Figure 4 yes Figure 1 A schematic cross-sectional view of the middle BB;

[0024] Figure 5 yes Figure 4 Schematic cross-sectional view of CC;

[0025] Figure 6 yes Figure 4 Schematic diagram of hiding the first and second sections of doors.

[0026] In the figure: door frame 10, placement cavity 11, first section door 12, second section door 13, protection shaft 14, protection plate 15, limiting rod 16, connecting cavity 17, snap-fit ​​groove 18, rotating cavity 19, protection cavity 20, protection block 21, buckle groove 22, buckle block 23, squeezing spring 24, squeezing surface 25, sliding groove 26, slide bar 27, rubber wheel 28, torsion spring 29, baffle 30, short snap-fit ​​slide groove 31, long snap-fit ​​slide groove 32, action cavity 33, guide column 34, working groove 35, action plate 36, snap-fit ​​slide bar 37, pulley 38, height sensing lamp 40, protection mechanism 50, snap-fit ​​structure 51. DETAILED DESCRIPTION

[0027] The present invention is further described in detail below with reference to the accompanying drawings and specific embodiments.

[0028] Combination Figure 1-6As shown, a two-stage automatic door of a vertical machining center includes a door frame 10, and a placement cavity 11 is provided in the door frame 10. A first section door 12 and a second section door 13 that can be moved along the vertical direction are movably connected in the placement cavity 11. The first section door 12 and the second section door 13 are abutted against and movably connected. A protective mechanism 50 is provided on each side of the placement cavity 11, and each protective mechanism 50 includes a protective plate 15 rotatably connected to the door frame 10. The two protective plates 15 extend into the placement cavity 11 and are movably connected to the first section door 12 and the second section door 13, respectively, and the protective plates 15 are horizontally arranged in the placement cavity 11. A long card-connecting slide 32 and a short card-connecting slide 31 are connected to both sides of the placement cavity 11. The two sides of the first section door 12 extend into the two long card-connecting slides 32, respectively, and the second section door 13 extends into the two short card-connecting slides 31, respectively. A height sensing lamp 40 is provided on the bottom of the end surface of the second section door 13 away from the first section door 12.

[0029] In this example, the first door 12 and the second door 13 are opened in stages. The height sensor lamp 40 on the second door 13 senses the height of the goods. According to the length of the goods, if the goods are short, only the first door 12 needs to be moved upward. When the goods are long, the first door 12 continues to move upward and drives the second door 13 to move upward, thereby opening a longer space. When the first door 12 or the second door 13 moves upward to open the space and place the goods, it takes a certain amount of time. During this process, the first door 12 or the second door 13 This status quo needs to be maintained continuously. In order to prevent the connection structure between the first section door 12, the second section door 13 and the door frame 10 from being suddenly damaged or broken, causing the first section door 12 or the second section door 13 to lose weight and move downward to damage the goods or injure the staff, when the first section door 12 or the second section door 13 moves upward, it will squeeze and push the protective plate 15 to rotate. When the first section door 12 or the second section door 13 moves upward to the upper side of the protective plate 15, the protective plate 15 moves to the initial position under the action of its own weight or other connection structures. The state is a horizontal state. At this time, the protection mechanism 50 clamps the protection plate 15 to prevent the protection plate 15 from rotating. In this state, even if the connection structure between the first section door 12 and the second section door 13 and the door frame 10 is suddenly damaged or broken, causing the first section door 12 or the second section door 13 to move downward due to weightlessness, it will be blocked by the protection plate 15. In addition, during the movement of the first section door 12 and the second section door 13, they move up and down along the long card connection slot 32 and the short card connection slot 31 respectively. Since the second section door 13 is located on the upper side of the first section door 12 in the initial state, Therefore, the length of the short card-joining slot 31 is smaller than that of the long card-joining slot 32, and in the initial state, the second section door 13 is abutted against the bottom of the short card-joining slot 31, limiting the lowest position of the second section door 13, and the long card-joining slot 32 and the short card-joining slot 31 can limit the lateral position of the first section door 12 and the second section door 13, and hide the connecting part in the door frame of the door frame 10, preventing the goods from scratching or colliding with the connecting part during movement, causing damage to the connecting part so that the first section door 12 and the second section door 13 cannot move up and down normally.

[0030] Preferably, the end of the protective plate 15 away from the protective shaft 14 is rotatably connected to a rubber wheel 28, and the rubber wheel 28 extends out of the protective plate 15. The rubber wheel 28 has deformation ability, which reduces the squeezing of the first section door 12 or the second section door 13 and reduces the friction between the first section door 12 or the second section door 13.

[0031] The first section door 12 is provided with two sliding grooves 26, which are respectively located at the two ends of the first section door 12, and the sliding grooves 26 are respectively located in the frames of the two door frames 10. The second section door 13 is provided with a sliding rod 27 corresponding to the sliding grooves 26 one by one, and there is a gap between the bottom of the sliding groove 26 and the bottom of the first section door 12.

[0032] In this example, the sliding groove 26 and the sliding rod 27 are also hidden in the frame of the door frame 10, so that the sliding groove 26 and the sliding rod 27 are as far away from the center of the placement cavity 11 as possible. During the movement of goods, it is possible to avoid collision or friction with the sliding groove 26 and the sliding rod 27 as much as possible, which may cause the sliding groove 26 and the sliding rod 27 to be connected in an unsmooth manner, resulting in the sliding rod 27 being unable to slide in the sliding groove 26. In addition, when the first section door 12 moves upward to the bottom of the sliding groove 26 and the bottom of the sliding rod 27, the first section door 12 continues to move upward and will move the second section door 13 upward.

[0033] The protection mechanism 50 also includes a connecting cavity 17 arranged in the door frame 10, a rotating cavity 19 is provided between the connecting cavity 17 and the placement cavity 11, the rotating cavity 19 is rotatably connected with a protection shaft 14, a torsion spring 29 is provided between the protection shaft 14 and the inner wall of the rotating cavity 19, the two ends of the protection shaft 14 extend into the placement cavity 11 and the connecting cavity 17 respectively, one end of the protection shaft 14 extending into the placement cavity 11 is connected to the corresponding protection plate 15, the other end of the protection shaft 14 is movably connected to a limiting rod 16 that can move back and forth left and right in the horizontal direction of the door frame 10, and the limiting rod 16 can extend into the protection shaft 14 to form a snap connection with the corresponding protection shaft 14.

[0034] In this example, when the first-section door 12 or the second-section door 13 moves upward to push the corresponding protective plate 15, the corresponding protective shaft 14 will rotate, thereby twisting the torsion spring 29 and storing energy. When the first-section door 12 or the second-section door 13 moves upward to the upper side of the protective plate 15, the protective plate 15, under the action of the torsion spring 29 after storing energy, causes the protective shaft 14 to rotate until the protective plate 15 moves to its initial state, i.e., a horizontal state. Then, the limiting rod 16 is pushed into the connecting cavity 17, so that the limiting rod 16 extends into the corresponding protective shaft 14 and forms a clamping connection with the protective shaft 14, thereby prohibiting the protective plate 15 from rotating in a manner that prohibits the protective shaft 14 from rotating.

[0035] A snap-in groove 18 is provided in the end of the protective shaft 14 extending into the connecting cavity 17. The shape of the snap-in groove 18 is adapted to the shape of the end of the corresponding limiting rod 16, and the end of the snap-in groove 18 close to the corresponding limiting rod 16 is stepped, and the end of the snap-in groove 18 away from the corresponding limiting rod 16 is adapted to the end of the limiting rod 16, and the cross-sectional area of ​​one end of the step-shaped shape close to the limiting rod 16 is larger than the cross-sectional area of ​​the other end.

[0036] In this example, after multiple back-and-forth twisting, the protective shaft 14 will have a certain angular deviation, so the step-shaped end of the snap-in groove 18 close to the corresponding limiting rod 16 has a guiding function. As the limiting rod 16 extends into the snap-in groove 18, the limiting rod 16 pushes the step-shaped end of the snap-in groove 18 and drives the protective shaft 14 to rotate to the correct position, and then extends into the end of the snap-in groove 18 away from the corresponding limiting rod 16 and forms a snap connection with the protective shaft 14 to prevent the protective shaft 14 from rotating.

[0037] Each limiting rod 16 has a protective cavity 20 arranged in the door frame 10 on the upper and lower sides respectively, and each protective cavity 20 is provided with a protective block 21 that can be repeatedly moved up and down along the vertical direction. A pushing spring 24 is provided between the protective block 21 and the corresponding inner wall of the protective cavity 20, and a clamping structure 51 is provided between the limiting rod 16 and the protective block 21.

[0038] In this example, when the limiting rod 16 extends into the corresponding protective shaft 14 along the horizontal direction and forms a clamping connection with the protective shaft 14, the protective block 21 moves toward the direction close to the limiting rod 16 under the action of the pushing spring 24 and clamps the protective block 21 and the limiting rod 16 together through the clamping structure 51, preventing the limiting rod 16 from moving laterally and disengaging from the clamping state with the protective shaft 14.

[0039] The snap-fit ​​structure 51 includes a buckle groove 22 arranged on the protection block 21, and the buckle groove 22 has a pushing surface 25 arranged on the side of the protection block 21 away from the placement cavity 11. The upper and lower end surfaces of the limiting rod 16 are each provided with a buckle block 23 matched with the buckle groove 22.

[0040] In this example, when the limiting rod 16 extends into the corresponding protective shaft 14 and forms a snap connection with the protective shaft 14, in order to prevent the limiting rod 16 from moving laterally and disengaging from the protective shaft 14, the protective block 21 is brought close to the limiting rod 16, and the buckle block 23 on the limiting rod 16 is extended into the corresponding buckle groove 22, thereby preventing the limiting rod 16 from moving and preventing the limiting rod 16 from disengaging from the protective shaft 14.

[0041] The cross section of the buckle groove 22 is an isosceles triangle shape, the buckle block 23 is an isosceles trapezoid shape, and the inclination direction of the pushing surface 25 is the same as the inclination direction of one of the inclined surfaces of the buckle block 23 , and there is a gap between the buckle groove 22 and the corresponding pushing surface 25 .

[0042] In this example, when the limiting rod 16 extends into the corresponding protective shaft 14, the buckle block 23 will push the protective block 21, causing the protective block 21 to move away from the limiting rod 16 and squeeze the pushing spring 24, and causing the buckle block 23 to slowly approach the buckle groove 22, and finally, under the action of the pushing spring 24, the buckle block 23 extends into the corresponding buckle groove 22, thereby preventing the limiting rod 16 from moving laterally.

[0043] One side of the placement cavity 11 has an action cavity 33 arranged in the door frame 10, and a guide column 34 is provided on the end wall of the action cavity 33 close to the placement cavity 11. The action cavity 33 and the guide column 34 extend downward from the top of the placement cavity 11 to the bottom of the door frame 10. The long card-joining groove 32 and the short card-joining groove 31 on the same side of the guide column 34 next to the placement cavity 11 are arranged on the guide column 34. A working groove 35 is provided in the other end face of the guide column 34, and an action plate 36 that can move back and forth up and down along the vertical direction is provided in the working groove 35, and the action plate 36 is connected to the bottom of the first section door 12.

[0044] In this example, the action plate 36 is connected to a driver (not shown in the figure) placed next to the door frame 10. The driver can drive the action plate 36 to move the first section door 12 up and down along the vertical direction. On the one hand, the long card slot 32 and the short card slot 31 on the same side of the guide column 34 next to the placement cavity 11 are arranged on the guide column 34, which can hide the connecting part of the guide structure. On the other hand, the action plate 36 moves in the working groove 35 in the other end face of the guide column 34, and the working groove 35 is not connected to the placement cavity 11. Therefore, the driving structure for moving the first section door 12 and the second section door 13 can be hidden to prevent the goods from scratching or colliding with the connecting part or driving structure of the guide structure during movement, resulting in damage to the guiding connecting part or the driving structure, so that the first section door 12 and the second section door 13 cannot move up and down normally.

[0045] A clamping slide rod 37 movably connected to the long clamping slide groove 32 or the short clamping slide groove 31 is respectively provided on both sides of the first section door 12 and the second section door 13, and a plurality of pulleys 38 are respectively provided at both ends of the clamping slide rod 37 and are placed in sequence along the vertical direction.

[0046] In this example, the engaging slide rod 37 is connected to the long engaging slide groove 32 or the short engaging slide groove 31 via a pulley 38. When the engaging slide rod 37 moves along the long engaging slide groove 32 or the short engaging slide groove 31, the pulley 38 can rotate to reduce the friction force generated between the engaging slide rod 37 and the long engaging slide groove 32 or the short engaging slide groove 31.

[0047] The length of the baffle 30 is greater than or equal to the length of the first door 12 and the second door 13 . When the first door 12 is located at the top of the placement cavity 11 , the bottom end of the baffle 30 is lower than the bottom ends of the first door 12 and the second door 13 .

[0048] The working principle of the invention is as follows: the height sensing light 40 on the second section door 13 will sense the height of the cargo. According to the height of the cargo, the driver can drive the action plate 36 to move the first section door 12 upward in the vertical direction. In the initial state, the second section door 13 abuts against the bottom of the short card slot 31. When the first section door 12 moves upward to the bottom of the slide slot 26 and abuts against the second section door 13, as the first section door 12 moves, the second section door 13 will be pushed upward, and finally the first section door 12 and the second section door 13 are connected. When the first door 12 or the second door 13 moves into the baffle 30 and pushes the corresponding protective plate 15 upward, the corresponding protective shaft 14 will rotate, thereby twisting the torsion spring 29 and storing energy. When the first door 12 or the second door 13 moves upward to the upper side of the protective plate 15, the protective plate 15 rotates the protective shaft 14 under the action of the torsion spring 29 after storing energy until the protective plate 15 moves to the initial state, i.e., the horizontal state. At this time, the limiting rod 16 extends into the corresponding protective shaft 14 and forms a clamping connection with the protective shaft 14. , thereby prohibiting the protection shaft 14 from rotating and prohibiting the protection plate 15 from rotating. When the limiting rod 16 moves, the buckle block 23 will squeeze the protection block 21, so that the protection block 21 is away from the limiting rod 16 and squeezes the squeezing spring 24, and the buckle block 23 slowly approaches the buckle groove 22, and finally, under the action of the squeezing spring 24, the buckle block 23 extends into the corresponding buckle groove 22, thereby preventing the limiting rod 16 from moving horizontally, and then moving the goods. Since the long card slot 32 and the short card slot 31 are hidden in the door frame of the door frame 10, it is prevented that the goods are in the process of moving. The connecting part of the guide structure is scratched or collided, resulting in damage to the guiding connecting part, so that the first section door 12 and the second section door 13 cannot move up and down normally. At the same time, the sliding groove 26 and the sliding rod 27 are also hidden in the frame of the door frame 10, so that the sliding groove 26 and the sliding rod 27 are as far away from the center of the placement cavity 11 as possible. During the movement of goods, it is possible to avoid collision or friction with the sliding groove 26 and the sliding rod 27 as much as possible, which may cause the sliding groove 26 and the sliding rod 27 to be connected unsmoothly, resulting in the sliding rod 27 being unable to slide in the sliding groove 26.

[0049] The specific embodiments described herein are merely examples of the spirit of the present invention. Those skilled in the art may make various modifications or additions to the specific embodiments described or replace them in similar ways, but they will not deviate from the spirit of the present invention or exceed the scope defined by the appended claims.

[0050] Although this article uses the door frame 10, placement cavity 11, first section door 12, second section door 13, protective shaft 14, protective plate 15, limiting rod 16, connecting cavity 17, snap-fit ​​groove 18, rotating cavity 19, protective cavity 20, protective block 21, buckle groove 22, buckle block 23, pushing spring 24, pushing surface 25, sliding groove 26, slide rod 27, rubber wheel 28, torsion spring 29, baffle 30, short snap-fit ​​slide groove 31, long snap-fit ​​slide groove 32, action cavity 33, guide column 34, working groove 35, action plate 36, snap-fit ​​slide rod 37, pulley 38, height sensing lamp 40, protective mechanism 50, snap-fit ​​structure 51, etc. more frequently, these terms are used only to more conveniently describe and explain the essence of the present invention; interpreting them as any additional restrictions is contrary to the spirit of the present invention.

Claims

1. A two-stage automatic door for a vertical machining center, comprising a door frame (10), characterized in that: The door frame (10) is provided with a placement cavity (11), and a first door section (12) and a second door section (13) that can be moved in a vertical direction are movably connected in the placement cavity (11), and the first door section (12) and the second door section (13) are abutted against and movably connected, and a protective mechanism (50) is provided on each side of the placement cavity (11), and each protective mechanism (50) includes a protective plate (15) rotatably connected to the door frame (10), and the two protective plates (15) extend into the placement cavity (11) and are movably connected to the first door section (12) and the second door section (13), respectively. , and the protective plate (15) is horizontally arranged in the placement cavity (11), and the two sides of the placement cavity (11) are connected to a long card-joining slide groove (32) and a short card-joining slide groove (31), the two sides of the first section door (12) respectively extend into the two long card-joining slide grooves (32), and the second section door (13) respectively extends into the two short card-joining slide grooves (31), and the bottom of the end surface of the second section door (13) away from the first section door (12) is provided with a height sensing lamp (40), and the first section door (12) is provided with two sliding grooves (26), and the two sliding grooves (26) are provided on the first section door (12). The grooves (26) are respectively located at both ends of the first section door (12), and the sliding grooves (26) are respectively located in the frames of the two door frames (10). The second section door (13) is provided with a sliding rod (27) corresponding to the sliding grooves (26). There is a gap between the bottom of the sliding groove (26) and the bottom of the first section door (12). The protective mechanism (50) further includes a connecting cavity (17) arranged in the door frame (10), and a rotating cavity (19) is provided between the connecting cavity (17) and the placement cavity (11). The rotating cavity (19) is rotatably connected to the protective cavity (19). A shaft (14), a torsion spring (29) is provided between the protective shaft (14) and the inner wall of the rotary chamber (19), the two ends of the protective shaft (14) respectively extend into the placement chamber (11) and the connecting chamber (17), one end of the protective shaft (14) extending into the placement chamber (11) is connected to the corresponding protective plate (15), and the other end of the protective shaft (14) is movably connected to a limiting rod (16) that can reciprocate left and right along the horizontal direction of the door frame (10), and the limiting rod (16) can extend into the protective shaft (14) to form a snap connection with the corresponding protective shaft (14).

2. A two-stage automatic door for a vertical machining center according to claim 1, characterized in that: A snap-in groove (18) is provided in the end of the protective shaft (14) extending into the connecting cavity (17); the shape of the snap-in groove (18) matches the shape of the end of the corresponding limiting rod (16); the end of the snap-in groove (18) close to the corresponding limiting rod (16) is in a step-like shape; the end of the snap-in groove (18) away from the corresponding limiting rod (16) matches the end of the limiting rod (16); the cross-sectional area of ​​one end of the step-like shape close to the limiting rod (16) is larger than the cross-sectional area of ​​the other end.

3. A two-stage automatic door for a vertical machining center according to claim 2, characterized in that: Each limiting rod (16) has a protective cavity (20) disposed in the door frame (10) on its upper and lower sides, each protective cavity (20) having a protective block (21) capable of repeatedly moving up and down in a vertical direction, a pushing spring (24) being disposed between the protective block (21) and the inner wall of the corresponding protective cavity (20), and a clamping structure (51) being disposed between the limiting rod (16) and the protective block (21).

4. A two-stage automatic door for a vertical machining center according to claim 3, characterized in that: The snap-fit ​​structure (51) comprises a snap groove (22) arranged on the protection block (21); the side of the snap groove (22) away from the placement cavity (11) comprises an extrusion surface (25) arranged on the protection block (21); and the upper and lower end surfaces of the limiting rod (16) are each provided with a snap block (23) matched with the snap groove (22).

5. A two-stage automatic door for a vertical machining center according to claim 4, characterized in that: The cross section of the buckle groove (22) is in the shape of an isosceles triangle, the buckle block (23) is in the shape of an isosceles trapezoid, the inclination direction of the pushing surface (25) is the same as the inclination direction of one of the inclined surfaces of the buckle block (23), and there is a gap between the buckle groove (22) and the corresponding pushing surface (25).

6. A two-stage automatic door for a vertical machining center according to claim 1, characterized in that: One side of the placement cavity (11) has an action cavity (33) arranged in the door frame (10), and a guide column (34) is provided on the end wall of the action cavity (33) close to the placement cavity (11). The action cavity (33) and the guide column (34) extend downward from the top of the placement cavity (11) to the bottom of the door frame (10), and a long card-joining groove (32) and a short card-joining groove (31) on the same side of the placement cavity (11) as the guide column (34) are arranged on the guide column (34). A working groove (35) is provided in the other end surface of the guide column (34), and an action plate (36) that can move back and forth in the vertical direction is provided in the working groove (35), and the action plate (36) is connected to the bottom of the first section door (12).

7. A two-stage automatic door for a vertical machining center according to claim 6, characterized in that: A clamping slide rod (37) movably connected to the long clamping slide groove (32) or the short clamping slide groove (31) is respectively provided on both sides of the first section door (12) and the second section door (13), and a plurality of pulleys (38) arranged in sequence along the vertical direction are respectively provided at both ends of the clamping slide rod (37).

8. The two-stage automatic door for a vertical machining center according to claim 1, characterized in that: The length of the baffle (30) is greater than or equal to the length of the first door (12) and the second door (13). When the first door (12) is located at the top of the placement cavity (11), the bottom end of the baffle (30) is lower than the bottom ends of the first door (12) and the second door (13). In the initial state, the second door (13) abuts against the bottom of the short card-jointed slide groove (31). When the first door (12) moves upward to the bottom of the slide groove (26) and abuts against the second door (13), as the first door (12) moves, the second door (13) is pushed upward, and finally the first door (12) and the second door (13) are moved into the baffle (30).

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