Polyurethane sieve plate casting device

Abstract

The utility model discloses a kind of polyurethane sieve plate pouring devices, including workbench, workbench is provided with the upper platform and lower platform of upper and lower settings, wherein, two work station grooves that are compatible with the die outer contour of polyurethane sieve plate are provided on the upper platform and are spaced apart along length direction, the rear side of upper platform is provided with horizontally arranged translation drive mechanism, translation drive mechanism is provided with top probe, and inverted L type stand is arranged above upper platform and is driven under translation drive mechanism and translates along the length direction of workbench, pouring mechanism is arranged on inverted L type stand;Lower platform is provided with tank and two jacking mechanisms respectively located below work station groove, which are connected with pouring mechanism;The device further includes PLC controller, the output end of PLC controller is respectively connected with the controlled end of translation drive mechanism, pouring mechanism and jacking mechanism. The utility model not only can realize the automatic pouring of polyurethane sieve plate, and simple structure, convenient to use.

Description

Technical Field

[0001] This utility model relates to the field of polyurethane screen plate casting technology, and specifically to a polyurethane screen plate casting device. Background Technology

[0002] Polyurethane screens are widely used in mining, metallurgy, coal and other industries for material screening. They are typically produced by casting polyurethane using appropriate molds.

[0003] Most existing polyurethane screen plates are cast using the traditional manual casting method. This involves workers using a casting gun or discharge pipe to evenly pour the raw material from the tank into the mold, which is then cured and demolded. However, manual casting is inefficient, labor-intensive, and cannot guarantee the consistency of the polyurethane screen plates produced. Utility Model Content

[0004] The technical problem to be solved by this utility model is to provide a polyurethane screen plate casting device, which can not only realize the automatic casting of polyurethane screen plates, but also has a simple structure and is easy to use.

[0005] To solve the above-mentioned technical problems, the technical solution adopted by this utility model is as follows.

[0006] A polyurethane sieve plate casting device includes a worktable with an upper platform and a lower platform positioned vertically on the worktable. The upper platform has two station slots spaced along its length, each adapted to the outer contour of a polyurethane sieve plate mold, for seating into the bottom of the mold to achieve mold positioning. A horizontally positioned translation drive mechanism is located at the rear of the upper platform. The translation drive mechanism has an inverted L-shaped column with its top extending above the upper platform and translating along the length of the worktable under the drive of the translation drive mechanism. A casting mechanism for casting raw materials into the molds in the station slots is located on the inverted L-shaped column. The lower platform has a material tank connected to the casting mechanism and two lifting mechanisms located below the station slots, respectively, for lifting the molds in the corresponding station slots after casting is completed. The device also includes a PLC controller, the output of which is connected to the controlled terminals of the translation drive mechanism, the casting mechanism, and the lifting mechanism.

[0007] Preferably, the upper platform is equipped with an infrared sensor for monitoring the mold's position, and the output of the infrared sensor is connected to the input of the PLC controller.

[0008] Preferably, the translation drive mechanism includes a slide rail and a lead screw horizontally arranged on the rear side of the upper platform, and the lead screw is rotatably connected to the upper platform. One end of the lead screw is connected to a translation drive motor arranged on the upper platform, and the controlled end of the translation drive motor is connected to the output end of the PLC controller. The bottom of the inverted L-shaped column is threadedly connected to the lead screw and slidably assembled with the slide rail.

[0009] Preferably, the casting mechanism includes a casting pump and a lifting and telescopic cylinder mounted on the top horizontal section of an inverted L-shaped column; the telescopic rod of the lifting and telescopic cylinder is positioned downwards and passes through the inverted L-shaped column to connect to a casting pipe horizontally positioned along the width direction of the upper platform; the lower side wall of the casting pipe has a plurality of casting nozzles evenly arranged along its length, which communicate with the casting pipe and are used to inject raw materials into the mold; the inlet of the casting pump is connected to a feed pipe that penetrates into the bottom of the material tank, and the outlet of the casting pump is connected to a discharge pipe that communicates with the casting pipe; a flow meter is installed on the discharge pipe to monitor the flow rate of the raw materials pumped into the casting pipe; the input terminal of the PLC controller is connected to the output terminal of the flow meter, and the output terminal of the PLC controller is connected to the controlled terminals of the casting pump and the lifting and telescopic cylinder, respectively.

[0010] Preferably, guide rods are erected at both ends of the top of the casting pipe, and the top of the guide rods passes through the top horizontal part of the inverted L-shaped column and is slidably assembled with it.

[0011] Preferably, the workstation slot has several vertically penetrating lifting guide holes through the upper platform; the lifting mechanism includes a lifting drive cylinder mounted on the lower platform, the telescopic rod of the lifting drive cylinder is positioned upward and connected to a horizontally positioned push plate, the upper surface of the push plate has several push rods that correspond one-to-one with each lifting guide hole, and the top of the push rods is provided with anti-slip pads and passes through the corresponding lifting guide holes; the output end of the PLC controller is connected to the controlled end of the lifting drive cylinder.

[0012] Preferably, the lifting guide holes are located at the four corners and the center of the workstation slot.

[0013] The technological advancements achieved by this utility model are as follows, due to the adoption of the above technical solutions.

[0014] This invention enables automatic pouring of polyurethane screen plates through a set work station slot, translation drive mechanism, pouring mechanism, and PLC controller. It has a simple structure and is easy to use. At the same time, the pouring mechanism adjusts the height of the pouring pipe through a lifting telescopic cylinder and monitors the raw material flow in real time with a flow meter, which can ensure that the raw material is injected evenly into each pouring nozzle and improve the consistency of screen plate quality. The set lifting mechanism can lift the mold after pouring, and the mold can be quickly transferred and replaced manually, improving the pouring efficiency. Attached Figure Description

[0015] Figure 1 This is a schematic diagram of the structure of this utility model;

[0016] Figure 2 This is a top view of the present invention.

[0017] The components include: 1. Workbench, 11. Upper platform, 12. Lower platform, 2. Station slot, 21. Lifting guide hole, 3. Translation drive mechanism, 31. Slide rail, 32. Lead screw, 33. Translation drive motor, 4. Inverted L-shaped column, 5. Material tank, 6. Pouring mechanism, 61. Pouring pump, 62. Lifting telescopic cylinder, 63. Pouring pipe, 64. Pouring nozzle, 65. Guide rod, 7. Lifting mechanism, 71. Lifting drive cylinder, 72. Push plate, 73. Push rod, 74. Anti-slip pad, 8. Mold. Detailed Implementation

[0018] The present invention will now be described in further detail with reference to the accompanying drawings and specific embodiments.

[0019] A polyurethane sieve plate casting device, combined with Figures 1 to 2 As shown, the system includes a workbench 1, on which an upper platform 11 and a lower platform 12 are arranged vertically. Two station slots 2 are spaced apart along the length of the upper platform 11. These station slots 2 are adapted to the outer contour of the mold 8 of the polyurethane sieve plate and are used to seat into the bottom of the mold 8, thereby limiting the position of the mold 8. A horizontally arranged translation drive mechanism 3 is provided on the rear side of the upper platform 11. An inverted L-shaped column 4 is provided on the translation drive mechanism 3, with its top extending above the upper platform 11. The inverted L-shaped column 4 is translated along the length of the workbench 1 under the drive of the translation drive mechanism 3. A casting mechanism 6 is provided on the inverted L-shaped column 4, which is used to cast raw materials into the mold 8 in the station slots 2. The lower platform 12 is equipped with a material tank 5 and two lifting mechanisms 7. The material tank 5 stores raw materials and is connected to the casting mechanism 6. The two lifting mechanisms 7 are located below the work station slot 2. The lifting mechanisms 7 are used to lift the mold 8 in the corresponding work station slot 2 after the casting is completed, so as to facilitate the staff to change the mold 8.

[0020] An infrared sensor is installed on the upper platform 11. The infrared sensor is used to monitor whether the mold 8 is in place, that is, placed in the corresponding work station slot 2.

[0021] The translation drive mechanism 3 includes a slide rail 31 and a lead screw 32 horizontally arranged on the rear side of the upper platform 11. The lead screw 32 is rotatably connected to the upper platform 11, and one end of the lead screw 32 is connected to a translation drive motor 33 mounted on the upper platform 11. The bottom of the inverted L-shaped column 4 is threadedly connected to the lead screw 32 and slidably assembled with the slide rail 31. When the translation drive motor 33 drives the lead screw 32 to rotate, the inverted L-shaped column 4 moves horizontally, thereby driving the casting mechanism 6 to move horizontally, so as to alternately cast the mold 8 in the workstation slot 2.

[0022] The casting mechanism 6 includes a casting pump 61 and a lifting telescopic cylinder 62 mounted on the top horizontal body of the inverted L-shaped column 4. The telescopic rod of the lifting telescopic cylinder 62 is positioned downwards and passes through the inverted L-shaped column 4 to connect to a casting pipe 63. The casting pipe 63 is horizontally positioned along the width direction of the upper platform 11, and several casting nozzles 64 are evenly arranged along the length direction on the lower side wall of the casting pipe 63, which are connected to the casting pipe 63. The casting nozzles 64 are used to align with the mold 8, thereby injecting raw materials into the mold 8. Before casting, the height of the casting nozzles 64 is adjusted by the lifting telescopic cylinder 62 to adjust to a suitable casting height. The inlet of the casting pump 61 is connected to a feed pipe that penetrates into the bottom of the material tank 5, and the outlet of the casting pump 61 is connected to a discharge pipe that is connected to the casting pipe 63. The casting pump 61 pumps the raw materials in the material tank 5 into the casting pipe 63 and injects them into the mold 8 through the casting nozzles 64. Meanwhile, a flow meter is installed on the discharge pipe. The flow meter is used to monitor the flow rate of the raw material pumped into the casting pipe 63. The completion of the casting can be controlled according to the value monitored by the flow meter.

[0023] Guide rods 65 are erected at both ends of the top of the casting pipe 63. The top of the guide rods 65 passes through the top horizontal part of the inverted L-shaped column 4 and is slidably assembled with it. During the lifting and telescopic cylinder 62 driving the casting pipe 63 to rise and fall, the guide rods 65 can guide the movement, thereby ensuring smooth lifting and falling.

[0024] The work station slot 2 is provided with several longitudinally penetrating lifting guide holes 21 through the upper platform 11. Specifically, the lifting guide holes 21 are provided at the four corners and the middle of the work station slot 2.

[0025] The lifting mechanism 7 includes a lifting drive cylinder 71 mounted on the lower platform 12. The telescopic rod of the lifting drive cylinder 71 is positioned upwards and connected to a horizontally positioned push plate 72. Several push rods 73, corresponding one-to-one with each lifting guide hole 21, are erected on the upper surface of the push plate 72, with the tops of the push rods 73 passing through the corresponding lifting guide holes 21. After pouring is completed, the lifting drive cylinder 71 under the corresponding workstation slot 2 lifts the push plate 72. The push plate 72 drives each push rod 73 through each lifting guide hole 21 to smoothly lift the mold 8, thus facilitating mold 8 replacement by operators. Simultaneously, an anti-slip pad 74 is provided on the top of the push rod 73. The anti-slip pad 74 directly contacts the mold 8, and its upper surface in contact with the mold 8 has anti-slip textures for protection.

[0026] The device also includes a PLC controller. The input terminals of the PLC controller are connected to the output terminals of the infrared sensor and the flow meter, respectively. The output terminals of the PLC controller are connected to the controlled terminals of the translation drive mechanism 3, the pouring mechanism 6, and the lifting mechanism 7, respectively, specifically to the controlled terminals of the translation drive motor 33, the pouring pump 61, the lifting telescopic cylinder 62, and the lifting drive cylinder 71. During the use of the device, the pouring process is automatically controlled by the PLC controller.

[0027] The working principle of this utility model is as follows:

[0028] Two molds 8 are placed into the two workstation slots 2 of the upper platform 11 respectively. After the infrared sensor detects that the molds 8 are in place, it sends a signal to the PLC controller to confirm that the molds 8 are fixed.

[0029] The PLC controller starts the translation drive motor 33, which drives the lead screw 32 to rotate, causing the inverted L-shaped column 4 to move along the slide rail 31 to above the first mold 8; the lifting telescopic cylinder 62 drives the pouring pipe 63 to descend to the pouring height of the mold 8.

[0030] The casting pump 61 draws raw material from the material tank 5 and delivers it to the casting pipe 63 through the discharge pipe. The flow meter monitors the flow rate in real time and feeds it back to the PLC controller. The PLC controller adjusts the speed of the casting pump 61 according to the preset flow rate value. The raw material is evenly injected into the cavity of the mold 8 through multiple casting nozzles 64. During the injection process, the translation drive mechanism 3 drives the inverted L-shaped column 4 to move the entire casting mechanism 6.

[0031] After the pouring is completed, the PLC controller controls the lifting drive cylinder 71 to start, the push plate 72 drives the push rod 73 to lift upward, the anti-slip pad 74 contacts the bottom of the mold 8 and lifts it to the preset height, and the manual can easily take the mold 8 out of the station slot 2 and replace it with a new mold 8.

[0032] While the first mold 8 is being lifted, the translation drive mechanism 3 moves the inverted L-shaped column 4 to above the second mold 8, repeating the above pouring process to achieve alternating operation of the two workstations 2.

Claims

1. A polyurethane sieve plate casting device, comprising a workbench (1), wherein an upper platform (11) and a lower platform (12) are provided on the workbench (1) and are arranged vertically, characterized in that: The upper platform (11) has two station slots (2) spaced along its length, which are adapted to the outer contour of the mold (8) of the polyurethane screen plate and are used to sit on the bottom of the mold (8) to achieve the limiting of the mold (8). A horizontally arranged translation drive mechanism (3) is provided on the rear side of the upper platform (11). An inverted L-shaped column (4) with its top protruding above the upper platform (11) and translated along the length of the worktable (1) under the drive of the translation drive mechanism (3) is provided. The device is provided with a pouring mechanism (6) for pouring raw materials into the mold (8) in the work station slot (2); the lower platform (12) is provided with a material tank (5) connected to the pouring mechanism (6) and two lifting mechanisms (7) located below the work station slot (2) for lifting the mold (8) in the corresponding work station slot (2) after pouring is completed; the device also includes a PLC controller, the output end of which is connected to the controlled end of the translation drive mechanism (3), the pouring mechanism (6) and the lifting mechanism (7) respectively.

2. The polyurethane sieve plate casting device according to claim 1, characterized in that: The upper platform (11) is equipped with an infrared sensor for monitoring the position of the mold (8), and the output end of the infrared sensor is connected to the input end of the PLC controller.

3. The polyurethane sieve plate casting device according to claim 1, characterized in that: The translation drive mechanism (3) includes a slide rail (31) and a lead screw (32) horizontally arranged on the rear side of the upper platform (11), and the lead screw (32) is rotatably connected to the upper platform (11). One end of the lead screw (32) is connected to a translation drive motor (33) arranged on the upper platform (11), and the controlled end of the translation drive motor (33) is connected to the output end of the PLC controller. The bottom of the inverted L-shaped column (4) is threadedly connected to the lead screw (32) and slidably assembled with the slide rail (31).

4. The polyurethane sieve plate casting device according to claim 1, characterized in that: The casting mechanism (6) includes a casting pump (61) and a lifting telescopic cylinder (62) mounted on the top horizontal body of the inverted L-shaped column (4); the telescopic rod of the lifting telescopic cylinder (62) is set downward and passes through the inverted L-shaped column (4) to connect to a casting pipe (63) horizontally arranged along the width direction of the upper platform (11); the lower side wall of the casting pipe (63) is evenly provided with a number of casting nozzles (64) that communicate with the casting pipe (63) and are used to inject raw materials into the mold (8); the inlet of the casting pump (61) is connected to a feed pipe that penetrates into the bottom of the material tank (5); the outlet of the casting pump (61) is connected to a discharge pipe that communicates with the casting pipe (63); a flow meter is provided on the discharge pipe to monitor the flow rate of the raw materials pumped into the casting pipe (63); the input end of the PLC controller is connected to the output end of the flow meter; the output end of the PLC controller is connected to the controlled end of the casting pump (61) and the lifting telescopic cylinder (62) respectively.

5. The polyurethane sieve plate casting device according to claim 4, characterized in that: The top two ends of the casting pipe (63) are respectively provided with guide rods (65), and the top of the guide rods (65) passes through the top horizontal body of the inverted L-shaped column (4) and is slidably assembled with it.

6. The polyurethane sieve plate casting device according to claim 1, characterized in that: The work station slot (2) is provided with several vertical lifting guide holes (21) that penetrate the upper platform (11); the lifting mechanism (7) includes a lifting drive cylinder (71) set on the lower platform (12), the telescopic rod of the lifting drive cylinder (71) is set upward and connected to a horizontally set push plate (72), the upper surface of the push plate (72) is provided with several push rods (73) that correspond one-to-one with each lifting guide hole (21), and the top of the push rod (73) is provided with an anti-slip pad (74) and passes through the corresponding lifting guide hole (21); the output end of the PLC controller is connected to the controlled end of the lifting drive cylinder (71).

7. A polyurethane sieve plate casting device according to claim 6, characterized in that: The lifting guide hole (21) is opened at the four corners and the middle of the work station slot (2).

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