Discharging screen plate for engineering plastic production

Abstract

The utility model discloses a blanking screen mesh plate for engineering plastic production, which comprises a rectangular mounting frame, a first screen mesh plate and a second screen mesh plate are sequentially assembled and connected in the rectangular mounting frame from top to bottom, the hole mesh of the first screen mesh plate is larger than that of the second screen mesh plate, the rectangular mounting frame is provided with discharge ports of the first screen mesh plate and the second screen mesh plate, and the discharge ports of the first screen mesh plate and the second screen mesh plate are connected with the first screen mesh plate and the second screen mesh plate. Striker plates slidably connected with the inner side of the rectangular mounting frame are arranged on one side of the first screen mesh plate and one side of the second screen mesh plate and hinged to the rectangular mounting frame, and the two striker plates are assembled and connected with a lifting mechanism; cam mechanisms enabling one end of the first screen mesh plate and one end of the second screen mesh plate to move upwards in a reciprocating mode are arranged below the other sides of the first screen mesh plate and the second screen mesh plate. The engineering plastic screening device is simple in structure, engineering plastic is screened in the upward reciprocating inclination process of the first screen plate and the second screen plate through the arrangement of the cam mechanism, when the material blocking plate moves away from the discharging opening, other operation is not needed, the engineering plastic can be directly discharged, and the structure is ingenious.

Description

Technical Field

[0001] This utility model belongs to the field of engineering plastics technology, specifically relating to a feeding screen plate for engineering plastics production. Background Technology

[0002] Engineering plastics are used as engineering materials and to replace metals in the manufacture of machine parts. They have excellent comprehensive properties, including high rigidity, low creep, high mechanical strength, good heat resistance, and good electrical insulation. They can be used for a long time in harsh chemical and physical environments and can replace metals as engineering structural materials. In the production process of engineering plastics, the mixed liquid plastic needs to be extruded into solid strips, and then cooled and cut into granules. However, sometimes the temperature of the cooling water is too high, which causes the strips to not be cooled enough. This makes the strips more tough and difficult to cut later, resulting in irregularly shaped granules. Therefore, a screen plate is needed to screen the engineering plastics and separate the qualified products.

[0003] For example, Chinese patent CN218488837U discloses a feeding screen plate for engineering plastic production, including a fixed frame. A discharge hole is opened at the lower right end of the fixed frame, and a moving hole is opened at the lower middle left end of the fixed frame. A hidden groove is opened at the upper end of the moving hole. Sliding grooves are symmetrically opened at the front and back of the inner wall of the fixed frame. A first screen plate is installed on the upper part of the inner wall of the fixed frame, and a second screen plate is installed below the first screen plate. The mesh size of the first screen plate is larger than that of the second screen plate. Slider blocks are installed at both ends of the second screen plate, and the sliders are located in the sliding grooves. Springs are installed in the sliding grooves. Guide rods and threaded rods are symmetrically arranged at the front and back of the second screen plate. A motor is installed at the right end of the threaded rod. A push plate is sleeved on the outer surface of both the guide rod and the threaded rod. This invention retains particles larger than qualified plastic particles on the first screen plate, while qualified plastic particles remain on the second screen plate. Smaller plastic particles are discharged through the second screen plate, completing a three-stage screening process. This method can screen out all qualified plastic particles, resulting in good screening effect.

[0004] In the existing technology, the second screen plate is affected by the gravity of the accumulated qualified plastic particles, and the second screen plate will slowly descend to below the discharge hole, thereby discharging the qualified products. However, this method cannot ensure that the engineering plastics smaller than the mesh of the second screen plate are completely discharged, and they will be discharged at the same time as the qualified products. At the same time, when the gravity inside the second screen plate is not enough to make the second screen plate descend, the engineering plastics inside the second screen plate cannot be discharged. Utility Model Content

[0005] In view of the problems mentioned in the background art, the purpose of this utility model is to provide a feeding screen plate for engineering plastics production, so as to solve the problems mentioned in the background art.

[0006] To achieve the above-mentioned technical objectives, the technical solution adopted by this utility model is as follows:

[0007] A feeding screen plate for engineering plastic production includes a rectangular mounting frame. A first screen plate and a second screen plate are sequentially assembled and connected from top to bottom within the rectangular mounting frame. The mesh size of the first screen plate is larger than that of the second screen plate. The rectangular mounting frame has discharge ports for the first and second screen plates. One side of the first and second screen plates is provided with a baffle plate that is slidably connected to the inner side of the rectangular mounting frame and hinged to the rectangular mounting frame. The two baffle plates are assembled and connected with a lifting mechanism. The other side of the first and second screen plates is provided with a cam mechanism that causes one end of the first and second screen plates to reciprocate upward.

[0008] Preferably, the lifting mechanism includes a connecting rod connected to the two baffles, and a telescopic cylinder is assembled and connected to the lower side of the second screen plate.

[0009] Preferably, the cam mechanism includes a transmission rod, which is driven by a cam. When the side of the cam near the transmission rod contacts the screen plate, the screen plate is in a horizontal state. The two ends of the transmission rod are rotatably connected to a rectangular mounting frame, and the two transmission rods are assembled and connected by a drive mechanism.

[0010] Preferably, the drive mechanism includes a motor mounted on one end of one of the transmission rods, and a synchronous belt drivingly connecting the other ends of the two transmission rods.

[0011] Preferably, a U-shaped plate is fixedly connected to the upper side of the first screen plate and the second screen plate, and a clearance groove for the U-shaped plate is opened on the inner side of the baffle plate.

[0012] Preferably, a collection frame is provided on the lower side of the second screen plate inside the rectangular mounting frame, a handle is provided on one side of the collection frame, and an outlet is provided on the handle side of the rectangular mounting frame.

[0013] Preferably, the outlet of the rectangular mounting frame is slightly inclined downwards, and a guide plate is fixedly connected to the outlet of the rectangular mounting frame.

[0014] Compared with the prior art, the present invention has the following advantages:

[0015] This utility model has a simple structure. The engineering plastic is screened by the cam mechanism, which makes the first screen plate and the second screen plate tilt upward and back. When the baffle plate moves away from the discharge port, the engineering plastic can be discharged directly without any other operation. The structure is ingenious.

[0016] This invention controls the raising and lowering of the baffle plate by a telescopic cylinder, and controls the discharge of the screen plate by controlling the movement of the baffle plate, thus ensuring thorough screening by the screen plate.

[0017] This invention enables two screen plates to work simultaneously using a single power source. The power of the motor is transmitted to two transmission rods via a synchronous belt, and the transmission rods drive the cams to work. Attached Figure Description

[0018] This utility model can be further illustrated by the non-limiting embodiments given in the accompanying drawings;

[0019] Figure 1 This is a schematic diagram of the structure of an embodiment of the feed screen plate for engineering plastics production according to this utility model;

[0020] Figure 2 This is an isometric view of a feeding screen plate for engineering plastics production according to this utility model;

[0021] Figure 3 This is a cross-sectional view of the middle section of a feeding screen plate for engineering plastics production according to this utility model;

[0022] Figure 4 This is a schematic diagram of the inclined state of the screen plate of this utility model;

[0023] Figure 5 This is a schematic diagram of the assembly of the baffle plate and the lifting mechanism of this utility model;

[0024] Figure 6 This is a schematic diagram of the structure of the first screen plate of this utility model;

[0025] The symbols for the main components are explained below:

[0026] Rectangular mounting frame 1, guide plate 11;

[0027] First screen plate 2; Second screen plate 3; U-shaped plate 31;

[0028] baffle plate 4;

[0029] Lifting mechanism, connecting rod 51, telescopic cylinder 52;

[0030] Cam mechanism 6, transmission rod 61, cam 62, drive mechanism, motor 631, synchronous belt 632;

[0031] Collection box 7, handle 71. Detailed Implementation

[0032] To enable those skilled in the art to better understand this utility model, the technical solution of this utility model will be further described below in conjunction with the accompanying drawings and embodiments.

[0033] like Figure 1-5As shown, a feeding screen plate for engineering plastic production includes a rectangular mounting frame 1. A first screen plate 2 and a second screen plate 3 are sequentially assembled and connected from top to bottom inside the rectangular mounting frame 1. The mesh size of the first screen plate 2 is larger than that of the second screen plate 3. The rectangular mounting frame 1 has outlets for the first screen plate 2 and the second screen plate 3. A baffle plate 4 is provided on one side of the first screen plate 2 and the second screen plate 3 and is slidably connected to the inside of the rectangular mounting frame 1 and hinged to the rectangular mounting frame 1. The two baffle plates 4 are assembled and connected to a lifting mechanism. A cam mechanism 6 is provided on the lower side of the other side of the first screen plate 2 and the second screen plate 3 to move one end of the first screen plate 2 and the second screen plate 3 upwards and reciprocatingly.

[0034] In this embodiment, the rectangular mounting frame 1 is used to install the first screen plate 2 and the second screen plate 3. The baffle plate 4 is used to prevent unscreened engineering plastics from being discharged from the outlet. The lifting mechanism controls the lifting of the baffle plate 4. When the baffle plate 4 moves downward, the outlet opens. The upper end of the baffle plate 4 is flush with the lower side of the outlet. The baffle plate 4 fills the gap between the first screen plate 2, the second screen plate 3 and the front side of the rectangular mounting frame 1 while opening the outlet. The cam mechanism 61 is used to vibrate the first screen plate 2 and the second screen plate 3, so that the screen plates screen the engineering plastics more thoroughly, effectively preventing unqualified products from remaining above the second screen plate 3. At the same time, it prevents engineering plastics smaller than the mesh size of the first screen plate 2 from remaining above the first screen plate 2. Because the cam mechanism 61 tilts the first screen plate 3 and the second screen plate 3 slightly upward when it works, the engineering plastics can be discharged directly when the baffle plate 4 moves to open the outlet.

[0035] Reference Figure 5 The lifting mechanism includes a connecting rod 51 connected to two baffle plates 4, and a telescopic cylinder 52 is mounted and connected to the lower side of the second screen plate 3. In this embodiment, when the telescopic cylinder 52 retracts, the upper baffle plate 4 moves downward under the drive of the connecting rod 51, thereby disengaging the baffle plate 4 from the discharge port, and the screened engineering plastic is discharged from the discharge port.

[0036] Reference Figure 3-4 The cam mechanism 6 includes a transmission rod 61, which is connected to a cam 62. When the side of the cam 62 near the transmission rod 61 contacts the screen plates 2 and 3, the screen plates 2 and 3 are in a horizontal state. The two ends of the transmission rod 61 are rotatably connected to the rectangular mounting frame 1. A drive mechanism is assembled and connected to the two transmission rods 61. In this embodiment, the transmission rod 61 is used to transmit power to the cam 62. The cam 62 is preferably an eccentric wheel. When the distal end face of the eccentric wheel contacts the lower side of the first screen plate 2 or the second screen plate 3, the first screen plate 2 or the second screen plate 3 moves upward. During the upward reciprocating movement, the engineering plastic is screened. When the baffle plate 4 leaves the outlet position, the engineering plastic can be discharged.

[0037] Reference Figure 1-2 The drive mechanism includes a motor 631 mounted on one end of a transmission rod 61, and a synchronous belt 632 drivingly connecting the other ends of the two transmission rods 61. In this embodiment, the motor 631 drives the transmission rods 61 to rotate, and the synchronous belt 632 enables one motor 631 to drive the two transmission rods 61 to rotate synchronously.

[0038] Reference Figure 4-6 A U-shaped plate 31 is fixedly connected to the upper side of the first screen plate 2 and the second screen plate 3, and a clearance groove for the U-shaped plate 31 is opened on the inner side of the baffle plate 4. In this embodiment, the U-shaped plate 31 is used to block one side of the first screen plate 2 and the second screen plate 3 to prevent engineering plastic from falling out from the other three sides and affecting the screening quality. When the first screen plate 2 and the second screen plate 3 are tilted, the U-shaped plate 31 will not interfere with the baffle plate 4.

[0039] Reference Figure 3 A collection frame 7 is provided inside the rectangular mounting frame 1 on the lower side of the second screen plate 3. A handle 71 is provided on one side of the collection frame 7, and an outlet is provided on the side of the handle 71 of the rectangular mounting frame 1. In this embodiment, the collection frame 7 is used to collect engineering plastic particles smaller than qualified products, and the handle 71 facilitates pulling the collection frame 7 out from the outlet of the rectangular mounting frame 1.

[0040] Reference Figure 3 The outlet of the rectangular mounting frame 1 is slightly inclined downwards, and a guide plate 11 is fixedly connected to the outlet of the rectangular mounting frame 1. In this embodiment, the guide plate 11 is used to restrict the feeding path of the engineering plastic.

[0041] The above embodiments are merely illustrative of the principles and effects of this utility model and are not intended to limit the scope of this utility model. Any person skilled in the art can modify or alter the above embodiments without departing from the spirit and scope of this utility model. Therefore, all equivalent modifications or alterations made by those skilled in the art without departing from the spirit and technical concept disclosed in this utility model should still be covered by the claims of this utility model.

Claims

1. A blanking screen plate for engineering plastic production, comprising a rectangular mounting frame (1), characterized in that: The rectangular mounting frame (1) is sequentially assembled and connected with the first screen plate (2) and the second screen plate (3) from top to bottom, the mesh of the first screen plate (2) is larger than that of the second screen plate (3), the rectangular mounting frame (1) is provided with a discharge port of the first screen plate (2) and the second screen plate (3), one side of the first screen plate (2) and the second screen plate (3) is provided with a material blocking plate (4) which is slidingly connected with the inner side of the rectangular mounting frame (1) and is hingedly connected with the rectangular mounting frame (1), two material blocking plates (4) are assembled and connected with a lifting mechanism, the other side of the first screen plate (2) and the second screen plate (3) is provided with a cam mechanism (6) below which reciprocatingly moves one end of the first screen plate (2) and the second screen plate (3) upward.

2. The blanking screen plate for engineering plastic production according to claim 1, characterized in that: The lifting mechanism comprises a connecting rod (51) connected with the two material blocking plates (4), and the lower side of the second screen plate (3) is assembled and connected with a telescopic cylinder (52).

3. The blanking screen plate for engineering plastic production according to claim 1, characterized in that: The cam mechanism (6) comprises a transmission rod (61), the transmission rod (61) is drivingly connected with a cam (62), when the side of the cam (62) close to the transmission rod (61) is in contact with the screen plate (2, 3), the screen plate (2, 3) is in a horizontal state, both ends of the transmission rod (61) are rotatably connected with the rectangular mounting frame (1), and the two transmission rods (61) are assembled and connected with a driving mechanism.

4. The blanking screen plate for engineering plastic production according to claim 3, characterized in that: The driving mechanism comprises a motor (631) assembled and connected at one end of the transmission rod (61), and the other end of the two transmission rods (61) is drivingly connected with a synchronous belt (632).

5. The blanking screen plate for engineering plastic production according to claim 1, characterized in that: The upper side of the first screen plate (2) and the second screen plate (3) is fixedly connected with a U-shaped plate (31), and the inner side of the material blocking plate (4) is provided with a U-shaped plate (31) accommodating groove.

6. The blanking screen plate for engineering plastic production according to claim 1, characterized in that: The rectangular mounting frame (1) is provided with a collecting frame (7) below the second screen plate (3), one side of the collecting frame (7) is provided with a handle (71), and the rectangular mounting frame (1) is provided with an outlet on the side of the handle (71) of the collecting frame (7).

7. The blanking screen plate for engineering plastic production according to claim 1, characterized in that: The discharge port of the rectangular mounting frame (1) is slightly downwardly inclined, and the discharge port of the rectangular mounting frame (1) is fixedly connected with a material guide plate (11).

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