Cross beam device capable of stretching and retracting to give way and vertical machining center

Abstract

The utility model relates to the technical field of cross beams, and particularly discloses a telescopic abdicating cross beam device and a vertical machining center, the telescopic abdicating cross beam device comprises a cross beam, the cross beam is provided with an up-and-down through abdicating opening, and the abdicating opening is used for movable abdicating of a lifting chain; the bottom side of the cross beam is provided with an elastic telescopic mechanism capable of moving and stretching back and forth so that the receding opening can be movably blocked. The receding opening can be used for movable receding of the lifting chain, so that when the lifting chain lifts a workpiece, the workpiece can be lifted to the center position of the workbench all the time, shaking during lifting machining can be avoided, and working stability is guaranteed.

Description

Technical Field

[0001] The utility model relates to the technical field of beams, in particular to a telescopic and yielding beam device and a vertical machining center. Background Art

[0002] Existing vertical machining centers generally include a crossbeam when planning the exterior protection of the entire machine. The crossbeam is installed in front of the spindle box and above the workbench. When projected vertically from above, the workbench is often blocked by the crossbeam by about 2 / 3 of the space. This interferes with the movement of the lifting chain. When lifting large workpieces, the center of the workpiece will land significantly different from the center of the workbench, preventing the workpiece from being lifted to the center of the workbench. However, designs without a crossbeam will directly affect the rigidity and waterproof performance of the sheet metal shell of the exterior protection, resulting in inaccurate door closing and even the sheet metal shell being prone to shaking during machining. Utility Model Content

[0003] The utility model aims to provide a telescopic and yielding beam device to solve the above-mentioned technical problems.

[0004] To achieve the above-mentioned purpose, the technical solution of the utility model is: a retractable and yielding beam device, including a beam, a yielding opening which passes through from top to bottom is provided on the beam, the yielding opening is used for the lifting chain to make movable yield, and an elastic retractable mechanism which can be moved and retracted forward and backward is provided on the bottom side of the beam to realize the movable blocking of the yielding opening.

[0005] Preferably, the crossbeam is U-shaped, the clearance opening is a U-shaped clearance opening, and the opening of the U-shaped clearance opening faces forward.

[0006] Preferably, the elastic telescopic mechanism includes a movable plate and a fixed plate facing each other front and back, an accordion cover connected between the fixed plate and the movable plate, and a spring installed in the accordion cover, and the spring is used to drive the accordion cover to move forward, stretch and reset.

[0007] Preferably, guide rails are installed on the left and right ends of the bottom side of the beam corresponding to the clearance opening, and bayonet holes are provided on the left and right ends of the top side of the accordion cover, and the bayonet holes are slidably matched with the guide rails.

[0008] Preferably, a clearance hole is opened on the movable plate, and a guide rod is set through the clearance hole. The rear end of the guide rod is located in the accordion cover and is fixedly connected to the fixed plate. The length direction of the guide rod is parallel to the front and rear directions, and the spring is sleeved on the guide rod in the accordion cover.

[0009] Preferably, there are two guide rods, and the two guide rods are respectively located directly below the two guide rails.

[0010] Preferably, the fixed plate and the movable plate are both rigid parts, and the accordion cover is a flexible part.

[0011] The utility model also provides a vertical machining center, comprising any one of the above-mentioned telescopic and yielding beam devices.

[0012] Preferably, it also includes a shell, a spindle box, a hanging chain and a workbench. The beam device is installed on the shell in front of the spindle box, the workbench is located below the beam device, and the hanging chain is located in front of the beam device.

[0013] The utility model has the following beneficial effects:

[0014] The utility model includes a crossbeam, which is provided with a clearance opening that passes through from top to bottom. The clearance opening is used for a lifting chain to movably make room. An elastic telescopic mechanism that can move forward and backward and stretch is provided on the bottom side of the crossbeam to realize movably blocking the clearance opening. When the elastic telescopic mechanism is squeezed by the lifting chain moving backward, the elastic telescopic mechanism moves backward and contracts, thereby withdrawing from the bottom of the clearance opening, so that the clearance opening can be used for the lifting chain to movably make room, so that when the lifting chain lifts the workpiece, the workpiece can always be lifted to the center position of the workbench; when the lifting work is completed, the lifting chain moves forward out of the clearance opening, the elastic telescopic mechanism elastically resets and moves forward and stretches, thereby extending out from the bottom of the clearance opening to seal it, thereby playing a role in shielding and protecting the vertical machining center, and preventing water inside the vertical machining center from splashing out, which can ensure the rigidity, supporting strength and waterproof performance of the shell, while ensuring the precise closing of the door, and can prevent the shell from shaking during processing, thereby ensuring working stability. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 It is a top view of the elastic telescopic mechanism of the embodiment of the utility model in an extended state.

[0016] Figure 2 This is a front side perspective view of the elastic telescopic mechanism of an embodiment of the present utility model in an extended state.

[0017] Figure 3 It is a top view of the elastic telescopic mechanism of the embodiment of the utility model in a contracted state.

[0018] Figure 4 It is a top view of the elastic telescopic mechanism of the embodiment of the utility model in a contracted state.

[0019] Figure 5 It is a schematic diagram of the internal structure of an embodiment of the present utility model.

[0020] The accompanying drawings are marked with: 1 crossbeam, 11 guide rail, 2 yielding opening, 3 elastic telescopic mechanism, 31 fixed plate, 32 movable plate, 33 accordion cover, 34 spring, 35 guide rod, 36 bayonet. DETAILED DESCRIPTION

[0021] To further illustrate various embodiments, the present invention is provided with accompanying drawings. These drawings form part of the disclosure of this invention and are primarily used to illustrate the embodiments and, in conjunction with the relevant description in the specification, to explain the operating principles of the embodiments. By referring to these drawings, those skilled in the art will understand other possible implementations and the advantages of this invention. The components in the figures are not drawn to scale, and similar reference numerals are generally used to represent similar components.

[0022] In the description of this utility model, unless otherwise specified, "plurality" means two or more; the terms "upper," "lower," "left," "right," "inner," "outer," "front end," "rear end," "head," "tail," etc., indicating directions or positional relationships, are based on the directions or positional relationships shown in the accompanying drawings and are intended solely to facilitate the description of this utility model and simplify the description. They do not indicate or imply that the devices or components referred to must have a specific direction, be constructed, or operate in a specific direction, and therefore should not be construed as limiting this utility model. Furthermore, the terms "first," "second," "third," etc., are used for descriptive purposes only and should not be construed as indicating or implying relative importance.

[0023] In the description of this utility model, it should be noted that, unless otherwise specified or limited, the terms "connected" and "connection" should be understood in a broad sense. For example, they can refer to fixed connection, detachable connection, or integral connection; mechanical connection, electrical connection; direct connection, or indirect connection through an intermediary. Those skilled in the art will understand the specific meanings of the above terms in this utility model based on the specific circumstances.

[0024] See Figure 1-5 As shown, as an embodiment of the present invention, a retractable and yielding beam device is provided, which is mainly used in the field of workpiece hoisting in vertical machining centers, including a beam 1, and a yielding opening 2 is provided on the beam 1, which is through-through, and the yielding opening 2 is used for the lifting chain to make movable yielding. The bottom side of the beam 1 is provided with an elastic retractable mechanism 3 that can move forward and backward and retract to realize the movable blocking of the yielding opening 2.

[0025] During the hoisting operation, the hoisting chain moves backward to press the elastic telescopic mechanism 3, and the elastic telescopic mechanism 3 moves backward and contracts, thereby withdrawing from the position directly below the clearance opening 2, so that the clearance opening 2 can be used for the hoisting chain to move and make way. As a result, in a vertical projection from top to bottom, the crossbeam 1 does not block the space of the workbench, thereby avoiding blocking the movement range of the hoisting chain, so that when the hoisting chain hoists the workpiece, the workpiece can always be hoisted to the center position of the workbench;

[0026] When the lifting work is completed, the lifting chain moves forward out of the clearance opening 2, and the elastic telescopic mechanism 3 elastically resets and moves forward and stretches, thereby extending directly below the clearance opening 2 to block it, thereby shielding and protecting the vertical machining center and preventing water from splashing out inside the vertical machining center. This setting can ensure the rigidity, supporting strength and waterproof performance of the shell, while ensuring accurate closing of the door, and can avoid shaking of the shell during processing, thereby ensuring working stability.

[0027] In this embodiment, the crossbeam 1 is U-shaped, and the clearance opening 2 is a U-shaped clearance opening. The opening of the U-shaped clearance opening faces forward and the recessed direction is rearward. The elastic telescopic mechanism 3 includes a movable plate 32 and a fixed plate 31 facing front and rear, an accordion cover 33 connected between the fixed plate 31 and the movable plate 32, and a spring 34 installed in the accordion cover 33. The spring 34 is used to drive the accordion cover 33 to move forward, stretch and reset. When the lifting chain is performing the lifting work, the lifting chain squeezes the movable plate 32 to move backward, thereby driving the accordion cover 33 to move backward and contract. At this time, the spring 34 is compressed and stored. When the lifting chain moves forward out of the clearance opening 2, under the elastic force of the spring 34, the accordion cover 33 moves forward, stretches and resets, and at the same time drives the movable plate 32 to move forward and reset. At this time, the accordion cover 33 extends directly below the clearance opening 2 to block it.

[0028] In this embodiment, guide rails 11 are respectively installed on the left and right ends of the bottom side of the beam 1 corresponding to the yield opening 2, and bayonet sockets 36 are respectively provided on the left and right ends of the top side of the accordion cover 33. The bayonet sockets 36 cooperate with the guide rails 11 to slide back and forth, ensuring the accuracy and smoothness of the forward and backward movement and extension of the accordion cover 33, thereby ensuring the smooth progress of the lifting work.

[0029] In this embodiment, a clearance hole is formed on the movable plate 32, through which a guide rod 35 is provided. The rear end of the guide rod 35 is located within the accordion cover 33 and is fixedly connected to the fixed plate 31. The length direction of the guide rod 35 is parallel to the front-to-back direction. The spring 34 is mounted on the guide rod 35 within the accordion cover 33, so that the spring 34 can stably extend and retract in the front-to-back direction, thereby ensuring the accurate reset of the accordion cover 33. Specifically, there are two guide rods 35, each located directly below the two guide rails 11, which provides more stable guidance and prevents obstruction and interference with the hanging chain.

[0030] In this embodiment, the fixed plate 31 and the movable plate 32 are both rigid parts, specifically sheet metal parts, which have good wear resistance and are not easy to be damaged. The accordion cover 33 is a flexible part with better elasticity, ensuring the elastic stability.

[0031] The present invention also provides a vertical machining center, comprising the retractable and yielding beam device, shell, spindle box, lifting chain and workbench described in the above embodiment, the beam device is installed on the shell in front of the spindle box, the workbench is located below the beam device, and the lifting chain is located in front of the beam device. The beam device can avoid blocking and interfering with the moving range of the lifting chain, so that when the lifting chain lifts the workpiece, the workpiece can always be lifted to the center position of the workbench, while ensuring the rigidity, supporting strength and waterproof performance of the shell, ensuring accurate door closing, and avoiding shaking of the shell during processing, thereby ensuring working stability.

[0032] Although the present invention has been specifically demonstrated and described in conjunction with the preferred embodiments, it should be understood by those skilled in the art that various changes in form and details made to the present invention without departing from the spirit and scope of the present invention as defined in the appended claims shall fall within the scope of protection of the present invention.

Claims

1. A retractable beam device, characterized in that: The utility model comprises a crossbeam, which is provided with a vertically penetrating opening for allowing the lifting chain to make movable concessions. The bottom side of the crossbeam is provided with an elastic telescopic mechanism which can move forward and backward to realize movable blocking of the opening.

2. The retractable beam device according to claim 1, characterized in that: The crossbeam is U-shaped, the give way opening is a U-shaped give way opening, and the opening of the U-shaped give way opening faces forward.

3. The retractable beam device according to claim 2, characterized in that: The elastic telescopic mechanism includes a movable plate and a fixed plate facing each other, an accordion cover connected between the fixed plate and the movable plate, and a spring installed in the accordion cover. The spring is used to drive the accordion cover to move forward, stretch and reset.

4. The retractable beam device according to claim 3, characterized in that: The left and right ends of the bottom side of the crossbeam corresponding to the yielding opening are respectively provided with guide rails, and the left and right ends of the top side of the accordion cover are respectively provided with bayonets, which are matched with the guide rails for sliding forward and backward.

5. The retractable beam device according to claim 4, characterized in that: A clearance hole is opened on the movable plate, and a guide rod is set through the clearance hole. The rear end of the guide rod is located in the accordion cover and is fixedly connected to the fixed plate. The length direction of the guide rod is parallel to the front and rear directions, and the spring is sleeved on the guide rod in the accordion cover.

6. The retractable beam device according to claim 5, characterized in that: There are two guide rods, and the two guide rods are respectively located directly below the two guide rails.

7. The retractable beam device according to claim 3, characterized in that: The fixed plate and the movable plate are both rigid parts, and the accordion cover is a flexible part.

8. A vertical machining center, characterized in that: The invention comprises a retractable and yielding beam device as described in any one of claims 1 to 7.

9. The vertical machining center according to claim 8, characterized in that: It also includes a shell, a spindle box, a hanging chain and a workbench. The beam device is installed on the shell in front of the spindle box, the workbench is located below the beam device, and the hanging chain is located in front of the beam device.

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