Screen replacing device

Abstract

The utility model discloses a screen changing device which comprises a movable support, a plurality of studs are arranged above the movable support, a supporting plate and a machine head are arranged on the studs, a feeding hole is formed in the machine head, guide rods are arranged at the two ends of the supporting plate, a sliding block is installed on the guide rods in a sliding mode, a rotating mechanism is arranged on the sliding block, and a connector is installed on the side face of the sliding block. A sliding column is mounted on the connector through a pin rod, a plurality of through holes are formed in the sliding column, pore plates are arranged on the through holes, and one of the pore plates is aligned with the feeding hole during material filtering. The utility model has the beneficial effects that when a screen needs to be replaced, a worker drives the sliding block to move on the guide rod through the rotating mechanism, so that the sliding column is driven to move in the machine head, the pore plate on the sliding column is pushed out of the machine head, a new pore plate is convenient to replace, and meanwhile, another pore plate on the sliding column is used for filtering materials, so that production halt is avoided, and the production efficiency is ensured.

Description

Technical Field

[0001] This utility model relates to the field of screen switching machine technology, and in particular to a screen switching device. Background Technology

[0002] Screen changers, as important filtration devices, are widely used in polymer production lines, extrusion lines, and plastic modification granulation. A screen changer includes a manual or automatic switching device for one or more screens, used to filter out foreign particles and impurities as the polymer material flows through the screen. However, screen clogging can occur during the extrusion molding process, requiring a screen changer to replace the screen. The existing method involves disassembling the forming screen fixture on the discharge pipe and replacing the original forming screen. This operation is labor-intensive, slow, and affects production efficiency. Utility Model Content

[0003] The purpose of this invention is to overcome the shortcomings of the prior art and provide a screen switching device.

[0004] The purpose of this utility model is achieved through the following technical solution: a screen changing device, including a movable support, a plurality of studs are arranged above the movable support, a support plate and a machine head are arranged on the studs, a feed hole is opened on the machine head, guide rods are arranged at both ends of the support plate, sliders are slidably installed on the guide rods, a rotating mechanism is arranged on the sliders, a connector is installed on the side of the sliders, a sliding column is installed on the connector through a pin, a plurality of through holes are opened on the sliding column, and perforated plates are arranged on the through holes. When filtering material, one of the perforated plates is aligned with the feed hole.

[0005] Preferably, the support plate is provided with a bearing seat, a bearing is installed in the bearing seat, the bearing is mounted on the rotating mechanism, and a cover plate is provided on one side of the bearing seat.

[0006] Preferably, the rotating mechanism includes a threaded rod and a handle, with the handle mounted at the end of the threaded rod, and the threaded rod passing through a bearing and connecting to a threaded hole on the slider.

[0007] Preferably, the slider is convex in shape, with round holes at both ends, and the round holes and threaded holes are on the same straight line. A bushing is installed inside the round hole, and the guide rod is located inside the bushing.

[0008] Preferably, the slider is also provided with mounting holes, in which connectors are installed, and the mounting holes and the two circular holes are distributed in a triangle on the slider.

[0009] Preferably, a positioning ring is provided on the surface of the guide rod.

[0010] Preferably, an adjusting rod is provided below the movable bracket, and an adjusting nut a is threaded onto the adjusting rod.

[0011] Preferably, the stud penetrates the surface of the movable bracket, and two adjusting nuts b are provided on the stud, which are located at the upper and lower ends of the surface of the movable bracket respectively.

[0012] The present invention has the following advantages: When the screen needs to be replaced, the operator drives the slider to move on the guide rod through the rotating mechanism, thereby driving the sliding column to move inside the machine head, and then pushes the perforated plate on the sliding column out of the machine head, which is convenient for replacing the new perforated plate. At the same time, the filter material is filtered through another perforated plate on the sliding column, avoiding production stoppage and ensuring production efficiency. Attached Figure Description

[0013] Figure 1 This is a schematic diagram of the screen switching device.

[0014] Figure 2 A top-view structural diagram of the screen switching device;

[0015] Figure 3 A schematic diagram of the structure when replacing the perforated plate of the screen changing device;

[0016] Figure 4 This is a schematic diagram of the orifice plate structure;

[0017] Figure 5 This is a schematic diagram of the slider's structure;

[0018] Figure 6 This is a schematic diagram showing the distribution of through holes on the sliding column;

[0019] In the diagram, 1-adjusting rod, 2-stud, 3-support plate, 4-cover plate, 5-shaft sleeve, 6-guide rod, 7-positioning ring, 8-feed hole, 9-machine head, 10-threaded hole, 11-round hole, 12-adjusting nut b, 13-moving bracket, 14-sliding column, 15-pin, 16-connector, 17-slider, 18-bearing seat, 19-mounting hole, 20-bearing, 21-through hole, 22-hole plate, 23-handle. Detailed Implementation

[0020] To make the objectives, technical solutions, and advantages of the embodiments of this utility model clearer, the technical solutions of the embodiments of this utility model will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this utility model, not all embodiments. The components of the embodiments of this utility model described and shown in the accompanying drawings can typically be arranged and designed in various different configurations.

[0021] Therefore, the following detailed description of the embodiments of the present invention provided in the accompanying drawings is not intended to limit the scope of the claimed invention, but merely to illustrate selected embodiments of the invention. All other embodiments obtained by those skilled in the art based on the embodiments of the present invention without inventive effort are within the scope of protection of the present invention.

[0022] It should be noted that, where there is no conflict, the embodiments and features in the embodiments of this utility model can be combined with each other.

[0023] It should be noted that similar labels and letters in the following figures indicate similar items. Therefore, once an item is defined in one figure, it does not need to be further defined and explained in subsequent figures.

[0024] In the description of this utility model, it should be noted that the terms "center," "upper," "lower," "left," "right," "vertical," "horizontal," "inner," and "outer," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, or the orientation or positional relationship commonly used when the product of this utility model is in use, or the orientation or positional relationship commonly understood by those skilled in the art. They are only used 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. In addition, the terms "first," "second," etc., are only used to distinguish descriptions and should not be construed as indicating or implying relative importance.

[0025] In the description of this utility model, it should also be noted that, unless otherwise explicitly specified and limited, the terms "set," "install," "connect," and "link" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances.

[0026] In this embodiment, as Figure 1 , Figure 2 and Figure 4As shown, a screen changing device includes a movable support 13. Several studs 2 are arranged above the movable support 13. A support plate 3 and a machine head 9 are mounted on the studs 2. The machine head 9 has a feed hole 8, preferably located on the side of the machine head 9. Guide rods 6 are provided at both ends of the support plate 3. A slider 17 is slidably mounted on the guide rods 6. A rotating mechanism is provided on the slider 17. A connector 16 is mounted on the side of the slider 17. A sliding column 14 is mounted on the connector 16 via a pin 15. Several through holes 21 are provided on the sliding column 14. A perforated plate 22 is provided on the through holes 21. When filtering material, one of the perforated plates 22 is aligned with the feed hole 8. When a screen replacement is needed, the operator uses a rotating mechanism to move the slider 17 on the guide rod 6, which in turn moves the sliding column 14 within the machine head 9. This pushes the perforated plate 22 on the sliding column 14 out of the machine head 9, facilitating the replacement of the new perforated plate 22. Simultaneously, the filter material is filtered through another perforated plate 22 on the sliding column 14, avoiding production downtime and ensuring production efficiency. In this embodiment, as... Figure 6 As shown, there are two through holes 21, labeled A and B. When filter media is needed, the operator uses a rotating mechanism to move the sliding column 14 within the machine head 9, thereby aligning one of the perforated plates 22 with the feed hole 8 for filtration. When perforated plate 22 labeled A needs replacement, the operator rotates the rotating mechanism to retract the sliding column 14 (in the direction of the support plate 3), thus pushing perforated plate 22 labeled A out of the machine head 9 for replacement. At this time, perforated plate 22 labeled B aligns with the feed hole 8 for continued filtration. When perforated plate 22 labeled B needs replacement, the operator rotates the rotating mechanism to advance the sliding column 14, as shown... Figure 3 As shown, the perforated plate 22 with the number B is pushed out of the head 9 for replacement. At this time, the perforated plate 22 with the number A is aligned with the feed hole 8 and the material is filtered.

[0027] Furthermore, a bearing housing 18 is provided on the support plate 3, and a bearing 20 is installed inside the bearing housing 18. The bearing 20 is fitted onto the rotating mechanism, and a cover plate 4 is provided on one side of the bearing housing 18. Specifically, the main function of the cover plate 4 is to prevent the bearing 20 from falling out of the bearing housing 18, and at the same time, to prevent external dust from entering the bearing housing 18. Furthermore, the rotating mechanism includes a threaded rod and a handle 23. The handle 23 is installed at the end of the threaded rod, and the threaded rod passes through the bearing 20 and connects to the threaded hole 10 on the slider 17. Specifically, when filter media needs to be filtered, the operator turns handle 23, which drives the threaded rod to rotate. Since the threaded hole 10 on the slider 17 is connected to the threaded rod, the slider 17 moves along the threaded rod 10 during the rotation of the threaded rod 10, thereby driving the slider 17 to move on the guide rod 6, so that one of the perforated plates 22 is aligned with the feed hole 8. When the screen needs to be changed, the operator selects the rotation direction of handle 23 according to the actual situation, thereby changing the rotation direction of the threaded rod, thereby changing the movement direction of slider 17 on the threaded rod, and finally changing the movement direction of slide column 14, so that the corresponding perforated plate 22 is pushed out of the machine head 9 for replacement.

[0028] In this embodiment, as Figure 5 As shown, the slider 17 is convex in shape, with circular holes 11 at both ends. These circular holes 11 and threaded holes 10 are aligned on the same straight line. A bushing 5 is installed inside each circular hole 11, and the guide rod 6 is located within the bushing 5. Specifically, the bushing 5 is made of wear-resistant material to reduce wear on the slider 17 during movement. Furthermore, the slider 17 also has mounting holes 19, within which a connector 16 is installed. The mounting holes 19 and the two circular holes 11 are arranged in a triangular pattern on the slider 17.

[0029] In this embodiment, a positioning ring 7 is provided on the surface of the guide rod 6. Specifically, the main function of the positioning ring 7 is to limit the movement of the slide rod 14 when the perforated plate 22 on the slide rod 14 reaches the working position, preventing the slide rod 14 from moving forward or backward. That is, the positioning ring 7 is located at both ends of the guide rod 6. When the perforated plate 22 numbered B needs to be replaced, during the forward movement of the slide rod 14, when the slider 17 contacts one end of the positioning ring 7, it indicates that the perforated plate 22 numbered A is aligned with the feed hole 8. When the perforated plate 22 numbered A needs to be replaced, during the backward movement of the slide rod 14, when the slider 17 contacts the other end of the positioning ring 7, it indicates that the perforated plate 22 numbered B is aligned with the feed hole 8.

[0030] Furthermore, an adjusting rod 1 is provided below the movable support 13, and an adjusting nut a is threaded onto the adjusting rod 1. Specifically, when the ground is uneven, the operator adjusts the position of the adjusting nut a on the adjusting rod 1 to adjust the levelness of the device and keep it level.

[0031] Furthermore, the stud 2 penetrates the surface of the movable support 13, and two adjusting nuts b12 are provided on the stud 2, located at the upper and lower ends of the surface of the movable support 13, respectively. Specifically, by adjusting the position of the adjusting nuts b12 on the stud 2, the operator changes the length of the stud 2 located at the upper end of the surface of the movable support 13, thereby adjusting the working height of the device.

[0032] Although the present invention has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present invention should be included within the protection scope of the present invention.

Claims

1. A screen-changing device, characterized in that: The device includes a movable support (13), with several studs (2) on top of the movable support (13). A support plate (3) and a machine head (9) are provided on the studs (2). A feed hole (8) is provided on the machine head (9). Guide rods (6) are provided at both ends of the support plate (3). A slider (17) is slidably installed on the guide rods (6). A rotating mechanism is provided on the slider (17). A connector (16) is installed on the side of the slider (17). A sliding column (14) is installed on the connector (16) through a pin (15). Several through holes (21) are provided on the sliding column (14). A perforated plate (22) is provided on the through hole (21). When filtering the material, one of the perforated plates (22) is aligned with the feed hole (8).

2. The screen switching device according to claim 1, characterized in that: The support plate (3) is provided with a bearing seat (18), a bearing (20) is installed in the bearing seat (18), the bearing (20) is mounted on the rotating mechanism, and a cover plate (4) is provided on one side of the bearing seat (18).

3. The screen switching device according to claim 2, characterized in that: The rotating mechanism includes a threaded rod and a handle (23). The handle (23) is installed at the end of the threaded rod. The threaded rod passes through the bearing (20) and is connected to the threaded hole (10) on the slider (17).

4. The screen switching device according to claim 3, characterized in that: The slider (17) is convex in shape. The two ends of the slider (17) are provided with round holes (11), and the round holes (11) and the threaded holes (10) are on the same straight line. A bushing (5) is provided in the round hole (11), and the guide rod (6) is located in the bushing (5).

5. The screen switching device according to claim 4, characterized in that: The slider (17) is also provided with a mounting hole (19), in which the connector (16) is installed, and the mounting hole (19) and the two circular holes (11) are distributed in a triangle on the slider (17).

6. The screen switching device according to claim 5, characterized in that: The guide rod (6) has a positioning ring (7) on its surface.

7. The screen switching device according to claim 6, characterized in that: An adjusting rod (1) is provided below the movable support (13), and an adjusting nut a is threaded onto the adjusting rod (1).

8. The screen switching device according to claim 7, characterized in that: The stud (2) penetrates the surface of the movable bracket (13), and two adjusting nuts b (12) are provided on the stud (2), which are located at the upper and lower ends of the surface of the movable bracket (13).

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