Positive pressure switching valve

Abstract

The positive pressure switching valve comprises a mounting base, a plurality of upper pipelines are mounted on the mounting base in the length direction of the mounting base at equal intervals, lower pipelines are arranged below the upper pipelines, the lower pipelines are connected with a lifting device used for driving the lower pipelines to ascend and descend, and the lower pipelines are moved to move in the length direction of the mounting base. When the lower pipeline is opposite to one of the upper pipelines, the lifting device drives the lower pipeline to ascend so that the lower pipeline can be in butt joint with one of the upper pipelines, one kind of plastic particles are conveyed to a plastic forming machine, and after conveying is completed, the lifting device drives the lower pipeline to descend so that the lower pipeline can be separated from one of the upper pipelines. After the lower pipeline descends to a certain height, the lower pipeline is moved to be opposite to the other upper pipeline, the other plastic particles are conveyed to the plastic forming machine, the multiple plastic particles can be sequentially distributed to the plastic forming machine, and compared with an existing plastic particle distribution mode, the labor intensity can be reduced, and meanwhile the working efficiency can be improved.

Description

Technical Field

[0001] The present invention relates to the technical field of plastic molding, and in particular to a positive pressure switching valve. Background Art

[0002] Plastic molding processing equipment has been developed on the basis of rubber machinery and metal die-casting machines. Since the polymer injection molding process and simple molding equipment emerged in the 1870s, as an industry, it has only developed rapidly until the 1930s. Plastic molding processing equipment has gradually become commercialized. When plastics are molded and processed, different types of plastic pellets need to be distributed to the plastic molding processing equipment. Existing distributors generally include a lower pipe and multiple upper pipes arranged at equal distances. When distributing plastic pellets, it is necessary to manually carry the lower pipe and dock the lower pipe with the upper pipe, resulting in high labor intensity and low work efficiency. Summary of the Invention

[0003] The purpose of the present invention is to overcome the above technical deficiencies and propose a positive pressure switching valve to solve the technical problems in the background art.

[0004] To achieve the above technical purpose, the technical solution of the present invention provides a positive pressure switching valve, which includes a mounting seat. Multiple upper pipes are equidistantly installed along the length direction of the mounting seat. A lower pipe is arranged below the upper pipes. The lower pipe is connected to a lifting device for driving the lower pipe to lift. The lifting device is connected to the mounting seat through a moving component for enabling the lifting device to move along the length direction of the mounting seat.

[0005] Further, the mounting seat includes a top plate, and multiple lower pipes are equidistantly installed on the top of the top plate along the length direction of the top plate.

[0006] Further, side plates are installed on both sides of the bottom of the top plate. Bottom plates are installed on the opposite sides of the bottoms of the two side plates. The moving component includes slide rails installed on the top of the bottom plate along the length direction of the bottom plate. Sliders are slidably arranged on the tops of the two slide rails. The two sliders are respectively installed on both sides of the mounting frame, and the lifting device is installed on the mounting frame.

[0007] Further, the lifting device includes two cylinders, which are respectively installed on both sides of the mounting frame. The piston rods of the two cylinders are respectively connected to both sides of the top of the fixing plate. The upper pipe penetrates and is installed inside the fixing plate.

[0008] Further, the mounting frame includes an upper mounting plate. The two sliders are respectively installed on both sides of the bottom of the upper mounting plate. Side mounting plates are installed on the other two sides of the bottom of the upper mounting plate. The two cylinders are respectively installed on the opposite sides of the two side mounting plates.

[0009] Furthermore, a lower mounting plate is installed between the two side mounting plates, one side of the lower mounting plate is threadedly connected to the threaded rod, and the bottom plate is provided with a plurality of fixing holes that match the threaded rod at equal distances along its length.

[0010] Furthermore, a contact block is provided on the other side of the lower mounting plate, and a plurality of contact sensors matching the contact block are installed at equal distances along the length direction of the side mounting plate. The contact sensors and the cylinder are electrically connected to the controller respectively.

[0011] Furthermore, a positioning ring is provided at the bottom of the top plate and opposite to each upper pipe. The positioning ring includes an upper ring installed at the bottom of the top plate and a lower ring coaxially installed at the bottom of the upper ring. The inner diameter of the lower ring is larger than the inner diameter of the upper ring, and a step groove is provided between the upper ring and the lower ring.

[0012] The beneficial effects of the present invention include:

[0013] 1. When distributing multiple types of plastic pellets, the lower pipe is moved so that it moves along the length direction of the mounting base. When the lower pipe is opposite to one of the upper pipes, the lifting device drives the lower pipe to rise so that the lower pipe docks with one of the upper pipes, and one of the plastic pellets is transported to the plastic molding machine. After the transportation is completed, the lifting device drives the lower pipe to descend so that the lower pipe is separated from one of the upper pipes. After the lower pipe descends to a certain height, the lower pipe is moved so that the lower pipe is opposite to the other upper pipe. When the lower pipe is opposite to the other upper pipe, the lifting device drives the lower pipe to rise so that the lower pipe docks with the other upper pipe, and another type of plastic pellets is transported to the plastic molding machine. Multiple types of plastic pellets can be distributed to the plastic molding machine in sequence. Compared with the existing plastic pellet distribution method, it can reduce labor intensity and improve work efficiency.

[0014] 2. When the lower pipe moves to face one of the upper pipes, the contact block contacts one of the contact sensors. After the contact sensor contacts the contact block, a signal is sent to the controller. The controller controls the cylinder to drive the lower pipe to rise, so that the lower pipe and the upper pipe are automatically docked. The degree of automation is high, which can further improve work efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 This is a schematic structural diagram of a positive pressure switching valve according to Example 1 of the present invention;

[0016] Figure 2 This is another state diagram of a positive pressure switching valve according to Example 1 of the present invention;

[0017] Figure 3 yes Figure 2 A magnified view of point A;

[0018] Figure 4 This is a partial structural diagram of a positive pressure switching valve according to Example 1 of the present invention;

[0019] Figure 5 It is a schematic structural diagram of a positive pressure switching valve according to Embodiment 2 of the present invention;

[0020] Figure 6 It is a partial structural schematic diagram of a positive pressure switching valve according to Embodiment 2 of the present invention;

[0021] In the figure: 1, mounting seat; 11, top plate; 12, side plate; 13, bottom plate; 131, fixing hole; 2, upper pipeline; 3, lower pipeline; 4, lifting device; 41, cylinder; 42, fixing plate; 5, moving component; 51, slide rail; 52, slider; 53, mounting bracket; 531, lower mounting plate; 532, side mounting plate; 533, upper mounting plate; 54, fixing plate; 55, threaded rod; 56, threaded sleeve; 57, pulley; 58, belt; 59, motor; 6, threaded rod; 7, contact block; 8, contact sensor; 9, positioning ring; 91, upper collar; 92, lower collar. Detailed implementation manners

[0022] In order to make the objectives, technical solutions and advantages of the present invention clearer, the present invention will be further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain the present invention and are not used to limit the present invention.

[0023] Embodiment 1

[0024] This embodiment provides a positive pressure switching valve, as Figure 1 shown, including a mounting seat 1. A plurality of upper pipelines 2 are equidistantly installed along the length direction of the mounting seat 1. A lower pipeline 3 is arranged below the upper pipelines 2. The lower pipeline 3 is connected to a lifting device 4 for driving the lifting of the lower pipeline 3. The lifting device 4 is connected to the mounting seat 1 through a moving component 5 for enabling the lifting device 4 to move along the length direction of the mounting seat 1. When distributing various plastic particles, slide the lower pipeline 3 so that the lower pipeline 3 slides along the length direction of the mounting seat 1. When the lower pipeline 3 is opposite to one of the upper pipelines 2, the lifting device 4 drives the lower pipeline 3 to rise so that the lower pipeline 3 is docked with one of the upper pipelines 2, and one kind of plastic particles is conveyed to a plastic molding machine. After the conveying is completed, the lifting device 4 drives the lower pipeline 3 to descend so that the lower pipeline 3 is separated from one of the upper pipelines 2. After the lower pipeline 3 descends to a certain height, slide the lower pipeline 3 so that the lower pipeline 3 is opposite to another upper pipeline 2. When the lower pipeline 3 is opposite to another upper pipeline 2, the lifting device 4 drives the lower pipeline 3 to rise so that the lower pipeline 3 is docked with another upper pipeline 2, and another kind of plastic particles is conveyed to the plastic molding machine. In this way, various plastic particles can be distributed to the plastic molding machine in sequence. Compared with the existing plastic particle distribution method, it can reduce the labor intensity and improve the work efficiency at the same time.

[0025] In this embodiment, asFigure 2-3 As shown in the figure, the mounting base 1 includes a top plate 11. A plurality of lower pipes 2 are equidistantly installed on the top of the top plate 11 along the length direction of the top plate 1. Side plates 12 are installed on both sides of the bottom of the top plate 11. Bottom plates 13 are installed on the opposite sides of the bottoms of the two side plates 12. The moving assembly 5 includes slide rails 51 installed on the top of the bottom plate 13 along the length direction of the bottom plate 13. Sliders 52 are slidably arranged on the tops of the two slide rails 51. The two sliders 52 are respectively installed on both sides of the mounting frame 53. The lifting device 4 is installed on the mounting frame 53. The cooperation of the slide rail 51 and the slider 52 enables the lifting device 4 to move along the length direction of the mounting base 1, so that the lower pipe 3 can move along the length direction of the mounting base 1.

[0026] In this embodiment, as Figure 4 shown, the lifting device 4 includes two cylinders 41. The two cylinders 41 are respectively installed on both sides of the mounting frame 53. The piston rods of the two cylinders 41 are respectively connected to the tops of both sides of the fixing plate 42. The lower pipe 3 is installed through the inside of the fixing plate 42. The cylinder 41 can drive the fixing plate 42 to lift, so as to drive the lower pipe 3 to lift. In some other embodiments, the cylinder 41 can be replaced with a hydraulic cylinder or an electric telescopic rod and other driving parts that can drive the lower pipe 3 to lift.

[0027] In this embodiment, the mounting frame 53 includes an upper mounting plate 531. The two sliders 52 are respectively installed on both sides of the bottom of the upper mounting plate 531. Side mounting plates 532 are installed on the other two sides of the bottom of the upper mounting plate 531. The two cylinders 41 are respectively installed on the opposite sides of the two side mounting plates 532. A lower mounting plate 533 is installed between the two side mounting plates 532. A threaded rod 6 is threadedly connected to one side of the lower mounting plate 533. The threaded rod 6 is one of a bolt or a screw. A plurality of fixing holes 131 matching the threaded rod 6 are equidistantly arranged on the bottom plate 13 along its length direction. When the lower pipe 3 slides to be opposite to one of the upper pipes 2, the threaded rod 4 is opposite to one of the fixing holes 131. After the lower pipe 3 is docked with one of the upper pipes 2, the threaded rod 4 is fixed inside the corresponding fixing hole 131, so as to fix the position of the lower pipe 3 and prevent the position of the lower pipe 3 from moving. At the same time, a contact block 7 is arranged on the other side of the lower mounting plate 533. A plurality of contact sensors 8 are equidistantly installed on the side mounting plate...

[0028] In this embodiment, a positioning ring 9 is provided at the bottom of the top plate 11 and opposite to each lower pipe 2. The positioning ring 9 includes an upper collar 91 mounted on the bottom of the top plate 11 and a lower collar 92 coaxially mounted on the top of the upper collar 91. The inner diameter of the lower collar 92 is larger than that of the upper collar 91. A stepped groove is formed between the upper collar 91 and the lower collar 92. When the lower pipe 3 is docked with the upper pipe 2, the upper end of the lower pipe 3 extends into the stepped groove, so as to avoid the position deviation of the lower pipe 3, and thus the plastic particles can be stably conveyed.

[0029] Specific principle: When distributing various plastic particles, slide the lower pipe 3 to move the lower pipe 3 along the length direction of the mounting base 1. When the lower pipe 3 is opposite to one of the upper pipes 2, the contact sensor 8 contacts the contact block 7 and sends a signal to the controller. The controller controls the lifting device 4 to drive the lower pipe 3 to rise so that the lower pipe 3 is docked with one of the upper pipes 2. When the lower pipe 3 is docked with one of the upper pipes 2, fix the threaded rod 6 inside the corresponding fixing hole 131 to fix the position of the lower pipe 3. Convey one kind of plastic particles to the plastic molding machine. After the conveying is completed, the lifting device 4 drives the lower pipe 3 to descend so that the lower pipe 3 is separated from one of the upper pipes 2. After the lower pipe 3 descends to a certain height, slide the lower pipe 3 to make the lower pipe 3 opposite to another upper pipe 2. When the lower pipe 3 is opposite to another upper pipe 2, the contact sensor 8 contacts the contact block 7 and sends a signal to the controller. The controller controls the lifting device 4 to drive the lower pipe 3 to rise so that the lower pipe 3 is docked with another upper pipe 2. When the lower pipe 3 is docked with another upper pipe 2, fix the threaded rod 6 inside the corresponding fixing hole 131, and convey another kind of plastic particles to the plastic molding machine. In this way, various plastic particles can be distributed to the plastic molding machine in turn. Compared with the existing plastic particle distribution method, the labor intensity can be reduced and the work efficiency can be improved at the same time.

[0030] Embodiment 2

[0031] This embodiment provides a positive pressure switching valve, which is different from that of Embodiment 1 in that, as Figure 5-6As shown in the figure, the moving component 5 includes fixing plates 54 installed at both ends of the mounting base 1. Between the two fixing plates 54, there are two threaded rods 55. The two ends of the two threaded rods 55 are respectively installed on the two fixing plates 54 through bearings. Threaded sleeves 56 are threadedly connected to both of the two threaded rods 55. The two threaded sleeves 56 are respectively installed on both sides of the mounting bracket 53. One end of each of the two threaded rods 56 is installed with a pulley 57. The two pulleys 57 are drivingly connected by a belt 58. One end of one of the threaded rods 55 is connected to the motor 59. By driving the motor 59, one of the threaded rods 55 can be rotated. One of the threaded rods 55 can drive the two threaded rods 55 to rotate through the two pulleys 57 and the belt 58. The two threaded rods 55 can drive the lifting device 4 to automatically move along the length direction of the mounting base 1 through the two threaded sleeves 56, so that the lower pipeline 3 can automatically move along the length direction of the mounting base 1, with a high degree of automation. The motor 58 can be replaced with a hydraulic motor or a pneumatic motor or other driving parts that can drive the threaded rod 55 to rotate.

[0032] The specific implementation manners of the present invention described above do not constitute a limitation on the protection scope of the present invention. Any other corresponding changes and deformations made according to the technical concept of the present invention should be included in the protection scope of the claims of the present invention.

Claims

1. A positive pressure switching valve, characterized in that, It includes a mounting base (1), and a plurality of upper pipes (2) are equidistantly installed along the length direction of the mounting base (1). A lower pipe (3) is provided below the upper pipe (2), and the lower pipe (3) is connected to a lifting device (4) for driving the lifting of the lower pipe (3). The lifting device (4) is connected to the mounting base (1) through a moving component (5) for enabling the lifting device (4) to move along the length direction of the mounting base (1).

2. The positive pressure switching valve according to claim 1, characterized in that, The mounting base (1) includes a top plate (11), and a plurality of the lower pipes (2) are equidistantly installed on the top of the top plate (11) along the length direction of the top plate (11).

3. The positive pressure switching valve according to claim 2, characterized in that, Side plates (12) are installed on both sides of the bottom of the top plate (11). Bottom plates (13) are installed on the opposite sides of the bottoms of the two side plates (12). The moving component (5) includes slide rails (51) installed on the top of the bottom plate (13) along the length direction of the bottom plate (13). Sliders (52) are slidably arranged on the tops of the two slide rails (51). The two sliders (52) are respectively installed on both sides of the mounting frame (53), and the lifting device (4) is installed on the mounting frame (53).

4. The positive pressure switching valve according to claim 3, characterized in that, The lifting device (4) includes two cylinders (41), and the two cylinders (41) are respectively installed on both sides of the mounting frame (53). The piston rods of the two cylinders (41) are respectively connected to both sides of the top of the fixing plate (42), and the upper pipe (3) is installed through the inside of the fixing plate (42).

5. The positive pressure switching valve according to claim 4, wherein The mounting frame (53) includes an upper mounting plate (531), and the two sliders (52) are respectively installed on both sides of the bottom of the upper mounting plate (531). Side mounting plates (532) are installed on the other two sides of the bottom of the upper mounting plate (531), and the two cylinders (41) are respectively installed on the opposite sides of the two side mounting plates (532).

6. The positive pressure switching valve according to claim 5, wherein, A lower mounting plate (533) is installed between the two side mounting plates (532). A threaded rod (6) is threadedly connected to one side of the lower mounting plate (533). A plurality of fixing holes (131) matching the threaded rod (6) are equidistantly arranged on the bottom plate (13) along its length direction.

7. The positive pressure switching valve according to claim 6, characterized in that, A contact block (7) is provided on the other side of the lower mounting plate (533). A plurality of contact sensors (8) matching the contact block (7) are equidistantly installed on the side mounting plate (532) along its length direction. The contact sensors (8) and the cylinders (41) are respectively electrically connected to a controller.

8. The positive pressure switching valve according to claim 7, wherein, Positioning rings (9) are provided at the bottom of the top plate (11) and at positions opposite to each upper pipe (2). The positioning ring (9) includes an upper collar (91) installed at the bottom of the top plate (11) and a lower collar (92) coaxially installed at the bottom of the upper collar (91). The inner diameter of the lower collar (92) is larger than the inner diameter of the upper collar (91), and a step groove is provided between the upper collar (91) and the lower collar (92).

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