Arc-shaped door opening and closing mechanism and arc-shaped door

Abstract

The utility model discloses an arc-shaped door opening and closing mechanism and an arc-shaped door, the arc-shaped door opening and closing mechanism comprises a fixing frame, an air cylinder and two swing arms with adjustable angles, the air cylinder comprises an air cylinder body and a piston rod, and the two swing arms are symmetrically arranged on the two sides of the piston rod. A first through hole penetrating through the fixing frame is formed in the fixing frame, one end of the piston rod is connected with the air cylinder body, the other end of the piston rod penetrates through the first through hole to be connected with the swing arms, and the air cylinder drives the two swing arms to do circular motion through the piston rod. According to the utility model, the air cylinder and the swing arm are arranged on the fixing frame, when the arc-shaped door is used, the swing arm is driven by the air cylinder to perform circular motion, so that the arc-shaped door is controlled to be opened or closed simultaneously, the structure is simple, a complicated electrical control system and a mechanical driving structure are not needed, and the cost is reduced.

Description

Technical Field

[0001] This utility model relates to the field of machine tool door technology, and in particular to an arc-shaped door opening and closing mechanism and an arc-shaped door. Background Technology

[0002] In the current process of automation transformation of CNC machine tools, host computers are used to control the opening and closing of machine tool doors.

[0003] In existing CNC machine tool door control structures, motors are generally used in conjunction with mechanical structures such as arc gears to control the opening and closing of arc doors. The electrical control system and mechanical drive mechanism are complex and costly. Utility Model Content

[0004] The purpose of this invention is to overcome the shortcomings of existing CNC machine tool doors, such as complex electrical control systems and high costs of mechanical drive mechanisms, and to provide an arc-shaped door opening and closing mechanism and an arc-shaped door.

[0005] The present invention provides an arc-shaped door opening and closing mechanism, including a fixed frame, a cylinder, and two angle-adjustable swing arms. The cylinder includes a cylinder body and a piston rod. The two swing arms are symmetrically arranged on both sides of the piston rod. The fixed frame has a first through hole penetrating the fixed frame. One end of the piston rod is connected to the cylinder body, and the other end of the piston rod passes through the first through hole and is connected to the swing arms. The cylinder drives the two swing arms to perform circular motion through the piston rod.

[0006] In one of the alternative technical solutions, the other end of the piston rod is provided with an active rack, and the two swing arms are symmetrically arranged on both sides of the active rack and are meshed with the active rack.

[0007] In one of the alternative technical solutions, one end of the swing arm is provided with a driven gear, which meshes with the driving rack, and the fixed frame is provided with a rotating shaft, through which the driven gear is rotatably connected to the fixed frame.

[0008] In one of the alternative technical solutions, the active rack is provided with a limiting groove, and a limiting pin is provided in the limiting groove, and the limiting pin is slidably connected to the limiting groove.

[0009] In one of the alternative technical solutions, the free end of the swing arm is provided with an arc-shaped door connection through hole.

[0010] In one of the alternative technical solutions, the fixing frame includes a connecting rod and a mounting base, the mounting base being disposed on the connecting rod, and the cylinder and the swing arm being disposed on the mounting base.

[0011] In one of the alternative technical solutions, the mounting base includes a base and a cover plate. The cover plate covers the base and forms a receiving cavity. The base is fixed to the connecting rod. The base is provided with a first through hole. The other end of the piston rod passes through the first through hole and extends into the receiving cavity. One end of the swing arm is disposed in the receiving cavity.

[0012] In one alternative technical solution, the base and the cover plate are provided with a second through hole on the side away from the cylinder body.

[0013] When the active rack is in the retracted state, the active rack is located within the accommodating cavity;

[0014] When the active rack is in the extended state, the active rack extends at least partially beyond the outer side of the second through hole.

[0015] In one alternative technical solution, the base is fixed in the middle of the connecting rod.

[0016] The present invention also provides an arc-shaped door, comprising two arc-shaped door bodies and an arc-shaped door opening and closing mechanism as described above, wherein the two swing arms of the arc-shaped door opening and closing mechanism are respectively connected to the two arc-shaped door bodies.

[0017] The above technical solution has the following advantages: by setting the cylinder and the swing arm on the fixed frame, the cylinder drives the swing arm to make circular motion during use, thereby controlling the arc-shaped door to open or close simultaneously. The structure is simple and does not require a complex electrical control system and mechanical drive structure, thus reducing costs. Attached Figure Description

[0018] The disclosure of this utility model will become more readily understood by referring to the accompanying drawings. It should be understood that these drawings are for illustrative purposes only and are not intended to limit the scope of protection of this utility model. In the drawings:

[0019] Figure 1 This is a schematic diagram of the structure of an arc-shaped door opening and closing mechanism according to an embodiment of the present invention;

[0020] Figure 2 for Figure 1 The left view;

[0021] Figure 3 for Figure 1 Top view;

[0022] Figure 4 for Figure 1 A three-dimensional image;

[0023] Figure 5This is a schematic diagram of the structure of an arc-shaped door provided in one embodiment of the present utility model. Detailed Implementation

[0024] The specific embodiments of this utility model will be further described below with reference to the accompanying drawings.

[0025] It is readily understood that, based on the technical solution of this utility model, various structural and implementation methods can be interchanged by those skilled in the art without altering the essential spirit of this utility model. Therefore, the following detailed embodiments and accompanying drawings are merely illustrative descriptions of the technical solution of this utility model and should not be considered as the entirety of this utility model or as limitations or restrictions on the technical solution of this utility model.

[0026] The directional terms such as up, down, left, right, front, back, front, back, top, and bottom mentioned or possibly used in this specification are defined relative to the structures shown in the accompanying drawings. They are relative concepts and may therefore vary depending on their location and usage. Therefore, these or other directional terms should not be interpreted as restrictive.

[0027] like Figures 1-4 As shown, an embodiment of the present invention provides an arc-shaped door opening and closing mechanism 10, which includes a fixed frame 11, a cylinder 12, and two angle-adjustable swing arms 13. The cylinder 12 includes a cylinder body 121 and a piston rod. The two swing arms 13 are symmetrically arranged on both sides of the piston rod. The fixed frame 11 is provided with a first through hole penetrating the fixed frame. One end of the piston rod is connected to the cylinder body 121, and the other end of the piston rod passes through the first through hole and is connected to the swing arms 13. The cylinder 12 drives the two swing arms 13 to perform circular motion through the piston rod.

[0028] The arc-shaped door opening and closing mechanism 10 provided by this utility model is used to control the opening and closing of the arc-shaped machine tool door.

[0029] The arc-shaped door opening and closing mechanism 10 provided in this embodiment mainly includes a fixed frame 11, a cylinder 12, and a swing arm 13.

[0030] The mounting bracket 11 is used to fix the cylinder 12 and the swing arm 13, forming an integrated structure.

[0031] The cylinder 12 includes a cylinder body 121 and a piston rod. The cylinder body 121 is mounted on the top of the fixed frame. One end of the piston rod is connected to the cylinder body 121, and the other end of the piston rod passes through the first through hole and is connected to the rocker arm 13. The cylinder 12 drives the rocker arm 13 to perform circular motion around the piston rod as the axis through the piston rod.

[0032] In use, the arc-shaped door opening and closing mechanism 10 is fixed to the top of the arc-shaped machine tool door by the fixing bracket 11. The two swing arms 13 are connected to the two arc-shaped doors respectively. The piston rod is driven to extend and retract by the cylinder body 121, which drives the swing arms 13 to move in a circle around the piston rod as the axis, thereby controlling the two arc-shaped doors to open or close at the same time. Specifically, when the piston rod is in the retracted state, the arc-shaped door is controlled to close; when the piston rod is in the extended state, the arc-shaped door is controlled to open.

[0033] In this embodiment, by mounting the cylinder and the swing arm on a fixed frame, the cylinder drives the swing arm to perform circular motion during use, thereby controlling the simultaneous opening or closing of the arc-shaped door. The structure is simple and does not require a complex electrical control system and mechanical drive structure, thus reducing costs.

[0034] In one embodiment, the other end of the piston rod is provided with an active rack 122, and two swing arms 13 are symmetrically arranged on both sides of the active rack 122 and are meshed with the active rack 122.

[0035] The piston rod is located at the other end of the cylinder body 121, and a drive rack 122 is provided. One end of the drive rack 122 is connected to the piston rod along its length. The opposite two edges of the drive rack 122 along its length are symmetrically provided with teeth. The rocker arm 13 is engaged with the drive rack 122. In use, the contraction motion of the piston rod drives the drive rack 122 to move linearly along its length, thereby driving the rocker arm 13 to move in a circular motion, controlling the simultaneous opening or closing of the arc-shaped door.

[0036] In one embodiment, one end of the swing arm 13 is provided with a driven gear 131, which meshes with the driving rack 122. The fixed frame 11 is provided with a rotating shaft 111, and the driven gear 131 is rotatably connected to the fixed frame 11 through the rotating shaft 111.

[0037] The end of the swing arm 13 is provided with a driven gear 131, which meshes with the driving rack 122. The fixed frame 11 is symmetrically provided with rotating shafts 111 on opposite sides of the driving rack 122. The driven gear 131 is rotatably connected to the fixed frame 11 through the rotating shafts 111. The meshing of the driven gear 131 with the driving rack 122 facilitates the control of the swing arm 13 to perform circular motion, ensuring that the arc door can open or close normally even when the swing arm 13 and the arc door are not concentric, and avoiding the mismatch caused by the different radii of the swing arm 13 and the driving rack 122.

[0038] Preferably, in order to simplify the structure and improve the connection stability, the rocker arm 13 and the driven gear 131 are integrally formed.

[0039] In one embodiment, the active rack 122 is provided with a limiting groove 1221, and a limiting pin 1222 is provided in the limiting groove 1221. The limiting pin 1222 is slidably connected to the limiting groove 1221.

[0040] The end of the active rack 122 away from the piston rod is provided with an elongated limiting groove 1221, and a limiting pin 1222 is provided in the limiting groove 1221. The length of the limiting groove 1221 extends along the length direction of the active rack 122, increasing the sliding stroke of the limiting pin 1222, thereby better controlling the opening of the swing arm 13.

[0041] In one embodiment, the free end of the swing arm 13 is provided with an arc-shaped door connecting through hole 132. During installation, the connector of the arc-shaped door is passed through the connecting through hole 132 and snapped onto the side wall of the swing arm 13 for easy installation.

[0042] In one embodiment, the fixing frame 11 includes a connecting rod 112 and a mounting base 113, with the mounting base 113 disposed on the connecting rod 112 and the cylinder 12 and the swing arm 13 disposed on the mounting base 113.

[0043] During installation, the two ends of the connecting rod 112 along its length are fixedly connected to the top of the arc-shaped door, such as by threaded connection. The back of the mounting base 113 is fixedly connected to the connecting rod 112. The cylinder 12 is fixedly connected to the top of the mounting base 113. The swing arm 13 is rotatably connected to the mounting base 113.

[0044] In one embodiment, the mounting base 113 includes a base 1131 and a cover plate 1132. The cover plate 1132 covers the base 1131 and forms a receiving cavity. The base 1131 is fixed to the connecting rod 112. The base 1131 is provided with a first through hole. The other end of the piston rod passes through the first through hole and extends into the receiving cavity. One end of the swing arm 13 is disposed in the receiving cavity.

[0045] The back of the base 1131 is fixedly connected to the connecting rod 112, and the rotating shaft 111 is set on the front of the base 1131. During installation, the other end of the piston rod is first inserted into the receiving cavity through the first through hole. Then, the cylinder body 121 is fixed on the top of the base 1131. Next, the driving rack 122 is fixedly connected to the other end of the piston rod. Then, the driven gear 131 is sleeved on the rotating shaft 111 and meshes with the driving rack 122. Finally, the cover plate 1132 is placed on the base 1131, so that the piston rod, the driving rack 122 and the driven gear 131 are set in the receiving cavity, which improves the aesthetics.

[0046] In one embodiment, in order to better control the opening degree of the swing arm 13, a second through hole 1133 is provided on the side of the base 1131 and the cover plate 1132 away from the cylinder body 121.

[0047] When the active rack 122 is in the retracted state, the active rack 122 is located inside the accommodating cavity;

[0048] When the active rack 122 is in the extended state, the active rack 122 extends at least partially beyond the outer side of the second through hole 1133.

[0049] In one embodiment, in order to better control the opening of the swing arm 13, the base 1131 is fixed in the middle of the connecting rod 112.

[0050] like Figure 5 As shown, an embodiment of the present invention provides an arc-shaped door, including two arc-shaped door bodies 20 and an arc-shaped door opening and closing mechanism 10 as described above, wherein two swing arms of the arc-shaped door opening and closing mechanism 10 are respectively connected to the two arc-shaped door bodies 20.

[0051] In this embodiment, an arc-shaped door opening and closing mechanism is set on two arc-shaped door bodies. In use, the cylinder of the arc-shaped door opening and closing mechanism drives the swing arm to perform circular motion, thereby controlling the arc-shaped door to open or close simultaneously. The structure is simple and does not require a complex electrical control system and mechanical drive structure, thus reducing costs.

[0052] The above description is merely the principle and preferred embodiment of this utility model. It should be noted that, for those skilled in the art, several other modifications can be made based on the principle of this utility model, and these modifications should also be considered within the protection scope of this utility model.

Claims

1. An arc-shaped door opening and closing mechanism, characterized in that, The device includes a fixed frame, a cylinder, and two angle-adjustable swing arms. The cylinder includes a cylinder body and a piston rod. The two swing arms are symmetrically arranged on both sides of the piston rod. The fixed frame has a first through hole. One end of the piston rod is connected to the cylinder body, and the other end of the piston rod passes through the first through hole and is connected to the swing arms. The cylinder drives the two swing arms to perform circular motion through the piston rod.

2. The arc-shaped door opening and closing mechanism as described in claim 1, characterized in that, The piston rod is provided with an active rack at the other end, and the two swing arms are symmetrically arranged on both sides of the active rack and are meshed with the active rack.

3. The arc-shaped door opening and closing mechanism as described in claim 2, characterized in that, One end of the swing arm is provided with a driven gear, which meshes with the driving rack. The fixed frame is provided with a rotating shaft, and the driven gear is rotatably connected to the fixed frame through the rotating shaft.

4. The arc-shaped door opening and closing mechanism as described in claim 2, characterized in that, The active rack is provided with a limiting groove, and a limiting pin is provided in the limiting groove. The limiting pin is slidably connected to the limiting groove.

5. The arc-shaped door opening and closing mechanism as described in claim 2, characterized in that, The free end of the swing arm is provided with an arc-shaped door connection through hole.

6. The arc-shaped door opening and closing mechanism as described in any one of claims 2-5, characterized in that, The fixing frame includes a connecting rod and a mounting base, the mounting base being disposed on the connecting rod, and the cylinder and the swing arm being disposed on the mounting base.

7. The arc-shaped door opening and closing mechanism as described in claim 6, characterized in that, The mounting base includes a base and a cover plate. The cover plate covers the base and forms a receiving cavity. The base is fixed to the connecting rod. The base is provided with the first through hole. The other end of the piston rod passes through the first through hole and extends into the receiving cavity. One end of the swing arm is disposed in the receiving cavity.

8. The arc-shaped door opening and closing mechanism as described in claim 7, characterized in that, The base and the cover plate are provided with a second through hole on the side away from the cylinder body. When the active rack is in the retracted state, the active rack is located within the accommodating cavity; When the active rack is in the extended state, the active rack extends at least partially beyond the outer side of the second through hole.

9. The arc-shaped door opening and closing mechanism as described in claim 8, characterized in that, The base is fixed in the middle of the connecting rod.

10. An arc-shaped door, characterized in that, It includes two arc-shaped door bodies and an arc-shaped door opening and closing mechanism as described in any one of claims 1-9, wherein the two swing arms of the arc-shaped door opening and closing mechanism are respectively connected to the two arc-shaped door bodies.

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