Automatic opening and closing mechanism for barrel cover of slurry barrel

Abstract

The utility model relates to an automatic opening and closing mechanism for a slurry barrel cover, which comprises a door frame arranged on one side outside a slurry barrel, the door frame comprises a top beam horizontally arranged and door frames vertically fixed on two sides of the top beam, an opening in-place sensor is fixed on the top of the top beam, and a closing in-place sensor is fixed on one side, back to the slurry barrel, of the top beam. A rotating shaft parallel to the top beam is horizontally arranged on the sides, close to the slurry barrel, of the upper portions of the two door frames, and a barrel cover body of the slurry barrel is connected with the rotating shaft through a connecting part. When the air cylinder stretches out and draws back, the barrel cover body can be driven to overturn around the central axis of the rotating shaft, and the two ends of the overturning stroke are the opening limit position and the closing limit position. The slurry barrel cover has the advantages that the barrel cover body can be automatically closed in place or opened in place under the driving of the air cylinder, the automation degree is high, more labor is saved, and the opening and closing operation of the slurry barrel cover is greatly facilitated; the whole structure is reasonable in design, low in investment cost, convenient to operate and good in safety.

Description

Technical Field

[0001] This utility model belongs to the field of investment casting, specifically relating to an automatic opening and closing mechanism for a slurry bucket lid. Background Technology

[0002] In the investment casting industry, slurry tanks are used to hold slurry. After the wax model is formed, it needs to be immersed in the slurry in the tank to form a shell. During daily use, except for the insertion and removal of the wax model, the slurry tank usually needs to be covered to prevent dust and other debris from entering the tank, and also to prevent spillage or excessive evaporation of water during stirring. Manually covering or removing the lid is cumbersome, labor-intensive, and unsafe; therefore, it is necessary to design an automatic lid opening and closing mechanism. Utility Model Content

[0003] This utility model provides an automatic opening and closing mechanism for a pulp tank lid, aiming to overcome the above-mentioned shortcomings in the prior art.

[0004] The technical solution of this utility model to solve the above-mentioned technical problems is as follows: An automatic opening and closing mechanism for a pulp tank lid includes a gantry on one side of the pulp tank. The gantry includes a horizontally arranged top beam and vertically arranged door frames fixed on both sides of the top beam. An opening position sensor is fixed on the top of the top beam, and a closing position sensor is fixed on the side of the top beam facing away from the pulp tank. A rotating shaft parallel to the top beam is horizontally arranged on the upper part of the two door frames near the pulp tank. The lid body of the pulp tank is connected to the rotating shaft through a connecting part. The center of the upper surface of the lid body is connected to the middle of the top beam through a cylinder. When the cylinder extends or retracts, it can drive the lid body to rotate around the central axis of the rotating shaft, and trigger the opening position sensor and the closing position sensor respectively at the opening limit position and the closing limit position of the rotation stroke.

[0005] Based on the above technical solution, the present invention can be further improved as follows.

[0006] Furthermore, the telescopic end of the cylinder is hinged to the center of the upper surface of the barrel cover body via a first hinge support, and the tail of the cylinder body is hinged to the center of the top of the top beam via a second hinge support.

[0007] Furthermore, the connecting part includes a connecting rod, a fixing clamp, and an extension plate. The connecting rods are arranged in parallel at intervals. One end of the connecting rod is fixedly connected to the bucket lid body, and the other end is fixedly connected to the extension plate. The middle part of the connecting rod is fixedly connected to the rotating shaft through the fixing clamp.

[0008] Furthermore, both the open and closed position sensors are metal proximity switches. The trigger end of the closed position sensor is vertically downward. When the lid body is flipped to the closed limit position, the trigger end of the closed position sensor is triggered by the upper surface of the extension plate. The trigger end of the open position sensor is horizontally pointed to the side where the paddle bucket is located. When the lid body is flipped to the open limit position, the open position sensor is triggered by the upper surface of the lid body or the upper surface of the connecting rod.

[0009] Furthermore, both ends of the rotating shaft are rotatably connected to the corresponding door frame via bearing seats.

[0010] Furthermore, the lower end of the door frame is fixedly connected to the base for placing the pulp bucket via a bottom beam.

[0011] Furthermore, two of each of the open and closed position sensors are symmetrically arranged on the top beam.

[0012] Compared with the prior art, the beneficial effects of this utility model are:

[0013] This automatic lid opening and closing mechanism uses a fixed gantry on the outside of the pulp tank, equipped with open / closed position sensors, a cylinder, a connecting part, and a rotating shaft. This allows the lid to automatically close or open under cylinder drive, resulting in a high degree of automation, reduced labor, and significantly simplified lid opening and closing operations. The overall structure is rationally designed, with low investment costs, convenient operation, and good safety. Attached Figure Description

[0014] Figure 1 An isometric view of an automatic opening and closing mechanism for a pulp tank lid provided for this utility model (also showing the pulp tank and base, etc.);

[0015] Figure 2 for Figure 1 An enlarged view of the structure within the dashed circle in the automatic opening and closing mechanism of the pulp tank lid shown in the diagram;

[0016] Figure 3 for Figure 1 The diagram shows an isometric view of the barrel cover body and connecting part in the automatic opening and closing mechanism of the barrel cover.

[0017] Figure 4 for Figure 1 The structure shown is an isometric view omitting the barrel cover body, connecting parts, and pulp barrel;

[0018] Figure 5 for Figure 4 Front view of the structure shown.

[0019] The attached diagram lists the components represented by each number as follows:

[0020] 1. Top beam; 2. Door frame; 3. Opening position sensor; 4. Closing position sensor; 5. Rotating shaft; 6. Bucket lid body; 7. Cylinder; 8. First hinge support; 9. Second hinge support; 10. Connecting rod; 11. Fixing clamp; 12. Extension plate; 13. Base. Detailed Implementation

[0021] The principles and features of this utility model are described below with reference to the accompanying drawings. The examples given are only for explaining this utility model and are not intended to limit the scope of this utility model.

[0022] In the description of this utility model, if terms such as "upper", "lower", "left", "right", "top", "bottom", "inner", and "outer" are used to indicate the orientation or positional relationship, the orientation or positional relationship indicated is based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model.

[0023] like Figures 1 to 5 As shown, this utility model provides an automatic opening and closing mechanism for a pulp tank lid, which includes a gantry on one side of the pulp tank. The gantry includes a horizontally arranged top beam 1 and vertically arranged door frames 2 fixed on both sides of the top beam 1. An opening position sensor 3 is fixed on the top of the top beam 1, and a closing position sensor 4 is fixed on the side of the top beam 1 facing away from the pulp tank. The upper part of the two door frames 2 is horizontally arranged with a rotating shaft 5 parallel to the top beam 1 on the side near the pulp tank. The lid body 6 of the pulp tank is connected to the rotating shaft 5 through a connecting part. The center of the upper surface of the lid body 6 is connected to the middle of the top beam 1 through a cylinder 7. When the cylinder 7 extends or retracts, it can drive the lid body 6 to rotate around the central axis of the rotating shaft 5, and trigger the opening position sensor 3 and the closing position sensor 4 respectively at the opening limit position and the closing limit position of the rotation stroke.

[0024] It should be noted that the door frame is located on the outside of the pulp tank, and the spacing between them should be adjusted appropriately according to specific circumstances, generally between 10-30cm. The pulp tank consists of an outer tank that is fixed relative to the base at its bottom and an inner tank that rotates around its central axis relative to the outer tank. When the tank lid is closed, it covers the top of the outer tank. Figure 1 As shown, the outer barrel of the slurry tank is also provided with external support frames on both sides for fixing the stirring blades, and the barrel cover body is provided with clearance notches on the corresponding sides to avoid the external support frames and the top structure of the stirring blades extending into the barrel.

[0025] In one embodiment of the present invention, the telescopic end of the cylinder 7 is hinged to the center of the upper surface of the barrel cover body 6 via a first hinge support 8, and the tail of the cylinder body of the cylinder 7 is hinged to the center of the top of the top beam 1 via a second hinge support 9.

[0026] Understandably, if necessary, the two ends of the cylinder connecting the lid body and the top beam can be interchanged; for example, the lid body can be hinged to the rear of the cylinder body. Alternatively, if necessary, the cylinder can be replaced with other common telescopic mechanisms, such as an electric telescopic rod.

[0027] In one embodiment of the present invention, the connecting part includes a connecting rod 10, a fixing clamp 11 and an extension plate 12. The connecting rods 10 are arranged in parallel at intervals. One end of the connecting rod 10 is fixedly connected to the bucket lid body 6, and the other end is fixedly connected to the extension plate 12. The middle part of the connecting rod 10 is fixedly connected to the rotating shaft 5 through the fixing clamp 11.

[0028] It is understandable that, in addition to being fixedly connected to the shaft via a clamp, the connecting rod can also be rotatably connected to the shaft via a bearing while the shaft itself does not rotate.

[0029] In one embodiment of this utility model, both the open position sensor 3 and the close position sensor 4 are metal proximity switches. The trigger end of the close position sensor 4 is vertically downward. When the bucket lid body 6 is flipped to the closed limit position, the trigger end of the close position sensor 4 is triggered by the upper surface of the extension plate 12. The trigger end of the open position sensor 3 is horizontally pointed to the side where the pulp bucket is located. When the bucket lid body 6 is flipped to the open limit position, the open position sensor 3 is triggered by the upper surface of the bucket lid body 6 or the upper surface of the connecting rod 10.

[0030] It should be noted that the open and close position sensors are not limited to metal proximity switches, but can also be trigger-activated automatic reset mechanical switches or infrared sensors, etc.

[0031] In one embodiment of this utility model, the two ends of the rotating shaft 5 are rotatably connected to the corresponding door frame 2 through bearing seats.

[0032] It should be noted that the bearing housing is fixedly connected to the door frame by bolts.

[0033] In one embodiment of the present invention, the lower end of the door frame 2 is fixedly connected to the base 13 for placing the pulp bucket via a bottom beam.

[0034] Understandably, in order to enhance the overall strength of the gantry and prevent deformation, a middle crossbeam can be installed in the middle of the two door frames.

[0035] In one embodiment of this utility model, the open position sensor 3 and the close position sensor 4 are each symmetrically arranged on the top beam 1 in two positions.

[0036] It should be noted that two symmetrically arranged position sensors are set up for opening, and two symmetrically arranged position sensors are also set up for closing. The advantage of this is that if a single position sensor fails, the cylinder extension and retraction will not stop in time, resulting in excessive extension and retraction that could damage the lid body or the cylinder extension rod.

[0037] The above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.

Claims

1. A kind of automatic opening and closing mechanism of pulp bucket cover, it is characterized in that, The utility model provides a kind of door frame for pulp bucket, including the door frame of being arranged outside one side of pulp bucket, the door frame includes the top beam (1) of horizontal arrangement and the door frame (2) of being fixed to the vertical arrangement of both sides of top beam (1), the top of top beam (1) is fixed with opening to position sensor (3), the side of top beam (1) is fixed with closing to position sensor (4) to the back of pulp bucket, the upper portion of two door frames (2) is horizontally provided with rotating shaft (5) parallel to top beam (1) in the side close to pulp bucket, the bucket cover body (6) of pulp bucket is connected with rotating shaft (5) by connecting portion, the upper surface center of bucket cover body (6) is connected with the middle part of top beam (1) by pneumatic cylinder (7), when pneumatic cylinder (7) telescopes, it can drive bucket cover body (6) to overturn around the central axis of rotating shaft (5) and trigger opening to position sensor (3) and closing to position sensor (4) in opening limit position and closing limit position of overturning stroke.

2. The automatic opening and closing mechanism of a pulp bucket cover according to claim 1, characterized in that, The telescopic end of pneumatic cylinder (7) is hinged with the upper surface center of bucket cover body (6) by first hinged support (8), the tail of cylinder body of pneumatic cylinder (7) is hinged with the top center of top beam (1) by second hinged support (9).

3. The automatic opening and closing mechanism of a pulp bucket cover according to claim 1, characterized in that, The connecting portion includes connecting rod (10), fixed clamp (11) and extension plate (12), connecting rod (10) is arranged in parallel and interval, one end of connecting rod (10) is fixedly connected with bucket cover body (6), the other end is fixedly connected with extension plate (12), and the middle part of connecting rod (10) is fixedly connected with rotating shaft (5) by fixed clamp (11).

4. The automatic opening and closing mechanism of a ladle cover according to claim 3, characterized in that, Opening to position sensor (3) and closing to position sensor (4) are both metal proximity switches, the trigger end of closing to position sensor (4) is vertically downward, when bucket cover body (6) overturns to closing limit position, the trigger end of closing to position sensor (4) is triggered by the upper surface of extension plate (12), the trigger end of opening to position sensor (3) is horizontally directed to the side where pulp bucket is located, when bucket cover body (6) overturns to opening limit position, opening to position sensor (3) is triggered by the upper surface of bucket cover body (6) or the upper surface of connecting rod (10).

5. The automatic opening and closing mechanism of a pulp bucket cover according to any one of claims 1 to 4, characterized in that, Both ends of rotating shaft (5) are rotatably connected with corresponding door frame (2) by bearing seat.

6. The automatic opening and closing mechanism of a pulp bucket cover according to claim 5, characterized in that, The lower end of door frame (2) is fixedly connected with base (13) for placing pulp bucket by bottom beam.

7. The automatic opening and closing mechanism of a ladle cover according to claim 5, characterized in that, Opening to position sensor (3) and closing to position sensor (4) are both arranged in left-right symmetry on top beam (1) respectively.

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