Elevator guide wheel casting machine

Abstract

An elevator guide wheel casting machine, including machine tool body, the machine tool body is provided with a partition, the partition divides the machine tool body into upper and lower boxes, the upper box is provided with a box door on the front side, a heating oven and a casting mold are arranged in the upper box, heating lamp tubes are arranged in the heating oven, the casting mold is composed of an upper mold, a middle mold and a lower mold, a mold cavity is formed between the upper mold, the middle mold and the lower mold, a demolding member is arranged on the upper mold, a main shaft is arranged in the upper mold, a feeding port is formed on the main shaft, the lower head of the feeding port communicates with the mold cavity, an opening and closing mold device is arranged on the machine tool body, the opening and closing mold device drives the main shaft and the upper mold to open upward or close downward, the upper head of the main shaft is rotationally limitedly connected with the opening and closing mold device, the middle mold is arranged above the lower mold, a lifting device is arranged in the upper box, the lifting device drives the middle mold to move up and down, a rotating seat is arranged at the bottom of the lower mold, a rotating shaft is connected below the rotating seat, a rotating driving device of the mold is arranged in the lower box, and the rotating driving device drives the rotating shaft to rotate.

Description

Technical Field

[0001] This invention relates to an elevator guide wheel casting machine, belonging to the field of casting equipment. Background Technology

[0002] The main function of elevator guide wheels is to restrict the freedom of movement of the car and counterweight, allowing them to move only along the guide rails. Traditionally, elevator guide wheels are manufactured by manually placing inserts into a casting mold, manually injecting hot-melt nylon material into the mold, and then using a crane to lift the mold into a centrifuge for fixation. The centrifuge rotates the mold, and under the centrifugal force, the nylon material gradually cools to form the elevator guide wheel. After the product is formed, workers use a crane to lift the mold off the centrifuge, open the mold, and manually remove the part. All steps require manual operation, which has the following disadvantages: 1. The temperature of the nylon material during casting is very high, and the mold temperature remains high after injection, posing a safety hazard and increasing the labor intensity and labor costs, thus raising manufacturing costs; 2. The mold needs to be lifted out and back from the centrifuge, which is very cumbersome and results in low production efficiency. Summary of the Invention

[0003] The purpose of this invention is to overcome the shortcomings of existing technologies and provide an elevator guide wheel casting machine that is easy to operate, reduces the labor intensity of workers, lowers manufacturing costs, and improves production efficiency.

[0004] The technical solution of the elevator guide wheel casting machine of the present invention is as follows: It includes a machine tool body, a partition plate dividing the machine tool body into an upper box and a lower box, a door on the front side of the upper box, a heating oven and a casting mold inside the upper box, a heating lamp in the heating oven, and a casting mold composed of an upper mold, a middle mold, and a lower mold forming a mold cavity. A demolding component is provided on the upper mold, including an upper mounting plate on the upper part of the upper mold, rotating brackets on the front and rear sides of the upper mounting plate, the rotating brackets being rotatably connected to the upper mounting plate via a rotating shaft, a demolding top block on one side of the rotating bracket, a connecting rod connected to the rotating bracket, a lifting bracket connected to the connecting rod, a demolding cylinder on the machine tool body, the upper part of the lifting bracket passing through the machine tool body and connected to the piston rod of the demolding cylinder, a main shaft in the upper mold, a feeding port on the main shaft, the lower end of the feeding port communicating with the mold cavity, and so on. A mold opening and closing device is provided, which drives the main spindle and the upper mold to open upwards or close downwards. The mold opening and closing device includes a slide table on the upper part of the machine tool body, a slide rail on the side wall of the slide table, a slider on the slide rail, a servo motor on the slide table, a lead screw connected to the output shaft of the servo motor, a lead screw nut on one side of the slider, and the lead screw and lead screw nut being threaded together. The upper end of the main spindle passes through the machine tool body and is rotatably connected to the slider via a limiting component. The middle mold is located above the lower mold. A lifting device is provided in the upper housing, which drives the middle mold to move up and down. A rotating seat is provided at the bottom of the lower mold, and a rotating shaft is connected to the rotating seat. A mold rotation drive device is provided in the lower housing, which drives the rotating shaft to rotate. The rotation drive device includes a motor, which is fixed to the lower housing. A synchronous pulley is provided at the lower end of the rotating shaft, and a synchronous belt is provided between the output shaft of the motor and the synchronous pulley. The motor drives the synchronous pulley and the rotating shaft to rotate via the synchronous belt.

[0005] Furthermore, the limiting component includes a retaining ring disposed on the outer wall of the main shaft above the slider, the retaining ring engaging with the main shaft for limiting, and a bearing disposed on the outer wall of the main shaft below the slider, the outer wall of the bearing contacting the bottom of the slider.

[0006] Furthermore, the lifting device includes two or more sets of lifting cylinders, the lifting cylinders are fixed to the partition plate, lifting push blocks are provided on the lifting cylinders, and two or more lifting protrusions are made on the side wall of the middle mold, with the lifting push blocks in contact with the underside of the lifting protrusions.

[0007] Furthermore, a positioning groove is formed on one side of the rotating seat, a rotating rod is set in the machine tool body, a positioning bearing is connected to the upper end of the rotating rod, the positioning bearing cooperates with the positioning groove, a rotating arm is connected to the upper end of the rotating rod, a positioning cylinder is set in the machine tool body, and the piston rod of the positioning cylinder is connected to the rotating arm.

[0008] Furthermore, a positioning rod is provided on the rotating seat, and positioning holes are respectively made in the upper mold and the middle mold. When the mold is closed, the positioning rod is inserted into the positioning hole.

[0009] The beneficial effects of the elevator guide wheel casting machine of the present invention are as follows: during production, only manual insertion of inserts is required, the mold automatically opens and closes, nylon rubber is automatically injected, and after the elevator guide wheel is manufactured and formed, it is automatically ejected and demolded. The entire process is fully automated, which is convenient and effectively reduces the labor intensity of workers. The operation has few safety hazards, reduces manufacturing costs, and the mold does not need to be lifted out for demolding, thus improving production efficiency. Attached Figure Description

[0010] Figure 1 This is a three-dimensional schematic diagram of an elevator guide wheel casting machine according to the present invention;

[0011] Figure 2 This is a structural schematic diagram of an elevator guide wheel casting machine according to the present invention;

[0012] Figure 3 This is a schematic diagram of the structure of the upper mold, main shaft, and mold opening and closing device in their coordinated state;

[0013] Figure 4 This is a schematic diagram of the assembly structure of the upper mold, main shaft, and demolding components;

[0014] Figure 5 This is a 3D schematic diagram of the intermediate model;

[0015] Figure 6 It is a three-dimensional schematic diagram of the working relationship of the lower mold, rotating seat, rotating shaft, rotating rod, positioning bearing, rotating arm, positioning cylinder, and lifting device. Detailed Implementation

[0016] This invention relates to an elevator guide wheel casting machine, such as... Figure 1 — Figure 6As shown, the machine tool includes a main body 1, a partition 2 dividing the main body 1 into an upper housing 3 and a lower housing 4. A door 5 is located on the front side of the upper housing 3. A heating oven 6 and a casting mold are located in the upper housing 3. A heating lamp 7 is installed in the heating oven 6. The casting mold consists of an upper mold 8, a middle mold 9, and a lower mold 10, forming a mold cavity. A demolding component is provided on the upper mold 8, including an upper mounting plate 21 on the upper part of the upper mold 8, with features on the front and rear sides of the upper mounting plate 21. A rotating bracket 22 is provided, which is rotatably connected to the upper mounting plate 21 via a rotating shaft. A demolding top block 23 is provided on one side of the rotating bracket 22. A connecting rod 24 is connected to the rotating bracket 22, and a lifting bracket 25 is connected to the connecting rod 24. A demolding cylinder 26 is provided on the machine tool body 1. The upper part of the lifting bracket 25 passes through the machine tool body 1 and is connected to the piston rod of the demolding cylinder 26. A main spindle 11 is provided in the upper mold 8. A feeding port 12 is provided on the main spindle 11. The lower end of the feeding port 12 communicates with the mold cavity. A mold opening and closing device is provided on the machine tool body 1. The main spindle 11 and the upper mold 8 open upwards or close downwards. The mold opening and closing device includes a slide table 15 mounted on the upper part of the machine tool body 1, a slide rail 16 mounted on the side wall of the slide table 15, a slider 17 mounted on the slide rail 16, a servo motor 18 mounted on the slide table 15, and an output shaft of the servo motor 18 connected to a lead screw 19. A lead screw nut 20 is mounted on one side of the slider 17, and the lead screw 19 and lead screw nut 20 are threaded together. The upper end of the main spindle 11 passes through the machine tool body 1 and is rotatably connected to the slider 17 via a limiting component. The middle mold 9 is positioned above the lower mold 10. A lifting device is installed in the housing 3, which drives the middle mold 9 to move up and down. A rotating seat 13 is installed at the bottom of the lower mold 10, and a rotating shaft 14 is connected to the rotating seat 13. A rotation drive device for the mold is installed in the lower housing 4, which drives the rotating shaft 14 to rotate. The rotation drive device includes a motor 41, which is fixed to the lower housing 4. A synchronous pulley 42 is installed at the lower end of the rotating shaft 14. A synchronous belt 43 is installed between the output shaft of the motor 41 and the synchronous pulley 42. The motor 41 drives the synchronous pulley 42 and the rotating shaft 14 to rotate via the synchronous belt 43.

[0017] Furthermore, the limiting component includes a retaining ring 31 disposed on the outer wall of the main shaft 11 above the slider 17, the retaining ring 31 engaging with the main shaft 11 for limiting, and a bearing 32 disposed on the outer wall of the main shaft 11 below the slider 17, the outer wall of the bearing 32 contacting the bottom of the slider 17. With the retaining ring 31 and the bearing 32, the slider 17 can drive the main shaft 11 to move up and down, and when the main shaft 11 and the mold rotate together, the upper part of the main shaft 11 and the slider 17 can also maintain a rotational engagement.

[0018] Furthermore, the lifting device includes two or more sets of lifting cylinders 27, which are fixed to the partition plate 2. Lifting push blocks 28 are provided on the lifting cylinders 27, and two or more lifting protrusions 29 are formed on the side wall of the intermediate mold 9. The lifting push blocks 28 are in contact with the lower part of the lifting protrusions 29. After the mold is opened, the lifting cylinders 27 drive the lifting push blocks 28 upward to contact the lifting protrusions 29 on the outer wall of the intermediate mold 9, pushing the intermediate mold 9 to move upward. When the mold is closed, the lifting cylinders 27 drive the lifting push blocks 28 downward, and the intermediate mold moves downward under its own weight to contact the lower mold 10. At this time, the lifting push blocks 28 do not contact the lifting protrusions 29 of the intermediate mold 9 to prevent interference with the rotation of the mold.

[0019] Furthermore, a positioning groove 51 is formed on one side of the rotating seat 13. A rotating rod 52 is set in the machine tool body 1, and a positioning bearing 53 is connected to the upper end of the rotating rod 52. The positioning bearing 53 cooperates with the positioning groove 51. A rotating arm 54 is connected to the upper end of the rotating rod 52. A positioning cylinder 55 is set in the machine tool body 1, and the piston rod of the positioning cylinder 55 is connected to the rotating arm 54. When the elevator guide wheel in the mold rotates and cools to form, the mold stops rotating. At this time, the positioning cylinder 55 drives the rotating arm 54, the rotating rod 52, and the positioning bearing 53 to rotate, so that the positioning bearing 53 is engaged in the positioning groove 51 of the rotating seat 13, which plays a role in locking and positioning the rotating seat 13 and the mold, ensuring that the mold can open and close smoothly, making the operation more precise and reliable.

[0020] Furthermore, a positioning rod 61 is provided on the rotating seat 13, and positioning holes 62 are respectively made in the upper mold 8 and the middle mold 9. When the molds are closed, the positioning rod 61 is inserted into the positioning hole 62. With the cooperation of the positioning rod 61 and the positioning hole 62, the upper, middle and lower molds 8, 9 and 10 are accurately positioned when the molds are closed. When the motor 41 drives the lower mold 10 to rotate, it can not only rely on the mold closing pressure to drive the middle mold 9 and the upper mold 8 to rotate together, but also drive the rotation through the positioning rod 61, making the operation more reliable.

[0021] This invention discloses an elevator guide wheel casting machine. During production, the door 5 is opened, and workers first place the insert into the lower mold 10, then close the door 5. The system program (mainly a control panel, the specific structure of which is existing technology and can be set as needed) then controls the heating lamps 7 of the heating oven 6 to heat the interior of the upper chamber 3. The upper housing 3 and the mold are heated to approximately 250°C. Then, the servo motor 18 drives the lead screw 19 to rotate. The lead screw 19 engages with the lead nut 20, causing the lead nut 20 to move downwards. The lead nut 20 then drives the slider 17 to move downwards along the slide rail 16. The slider 17 drives the main shaft 11, the upper mold 8, and the upper mounting plate 21, rotating bracket 22, demolding top block 23, connecting rod 24, and lifting bracket 25 to move downwards together. The upper mold 8 presses firmly against the middle mold 9 and the lower mold 10, closing the mold. Meanwhile, the positioning rod 61 on the rotating seat 13 passes through the positioning holes 62 of the middle mold 9 and the upper mold 8, positioning the upper, middle, and lower molds. At this time, the output of the motor 41... The shaft drives the synchronous belt 43 to run, the synchronous belt 43 drives the synchronous pulley 42 to rotate, and the synchronous pulley 42 drives the rotating shaft 14, rotating seat 13, lower mold 10, middle mold 9, upper mold 8, and main shaft 11 to rotate slowly together. The upper part of the main shaft 11 is engaged with the slider 17 through a limiting component. While rotating slowly, high-temperature nylon material is injected into the mold cavity inside the mold from the feeding port 12 of the main shaft 11. After the feeding is completed, the motor 41 drives the mold to rotate rapidly. Through the action of centrifugal force and the cooling system (the specific structure of the cooling system is existing technology), the high-temperature nylon material in the mold cavity is gradually cooled and solidified to obtain the molded elevator guide wheel. When the mold has been rotating for 6-7 minutes, the motor 41 gradually stops the mold from rotating. Under the control of the system program, the mold is precisely positioned and stopped. At this time, the piston rod of the positioning cylinder 55 drives the rotating arm 54 to rotate, and the rotating arm 54 drives the rotating rod 52 to rotate. The rotating rod drives the positioning bearing 53 to engage in the positioning groove 51 of the rotating seat 13, locking and positioning the mold. Then, the mold opening and closing device drives the main shaft 11, the upper mold 8, and the upper mounting plate 21, rotating bracket 22, demolding top block 23, connecting rod 24, and lifting bracket 25 to move downward together, opening the mold. Then, the lifting cylinder 27 of the lifting device drives the lifting push block 28 to move upward. The lifting protrusion 29 on the outer wall of the middle mold 9 is contacted by the lifting push block 28. The middle mold 9 is pushed upward by the lifting push block 28. The middle mold 9 drives the formed elevator guide wheel to disengage from the lower mold 10 (the formed elevator guide wheel is firmly inside the middle mold 9). The middle mold 9 stops between the upper mold 8 and the lower mold 10. Then, the demolding cylinder 26 of the demolding component drives the lifting bracket 25 to descend. The lifting bracket 25 drives the connecting rod 24 and the rotating bracket 22 to rotate downward around the rotating shaft. The rotating bracket 22 drives the demolding top block 23 to rotate downward, so that the demolding top block 23 corresponds to the elevator guide wheel inside the middle mold 9. The mold opening and closing device once again drives the upper mold 8 and the demolding top block 23 to push the elevator guide wheel downward together.Under the pushing force of the demolding block 23, the elevator guide wheel is pushed downwards and demolded. Finally, a worker or robot removes the demolded elevator guide wheel for the next production run. This solution is an elevator guide wheel casting machine. During production, only manual insertion of inserts is required; the mold automatically opens and closes, nylon material is automatically injected, and after the elevator guide wheel is formed, it is automatically ejected and demolded. The entire process is automated, convenient, effectively reducing the labor intensity of workers, minimizing operational safety hazards, lowering manufacturing costs, and improving production efficiency by eliminating the need to lift the mold for demolding.

Claims

1. An elevator guide wheel casting machine, characterized in that: The machine tool includes a main body (1), a partition (2) is provided in the main body (1), the partition divides the main body (1) into an upper box (3) and a lower box (4), a box door (5) is provided on the front side of the upper box (3), a heating oven (6) and a casting mold are provided in the upper box (3), a heating lamp (7) is provided in the heating oven (6), the casting mold is composed of an upper mold (8), a middle mold (9) and a lower mold (10), a mold cavity is formed between the upper mold (8), the middle mold (9) and the lower mold (10), a demolding component is provided on the upper mold (8), the demolding component includes an upper mounting plate (21) provided on the upper part of the upper mold (8), and the upper mounting plate (21) is provided on the front and rear sides. A rotating bracket (22) is provided, which is rotatably connected to the upper mounting plate (21) via a rotating shaft. A demolding top block (23) is provided on one side of the rotating bracket (22). A connecting rod (24) is connected to the rotating bracket (22), and a lifting bracket (25) is connected to the connecting rod (24). A demolding cylinder (26) is provided on the machine tool body (1). The upper part of the lifting bracket (25) passes through the machine tool body (1) and is connected to the piston rod of the demolding cylinder (26). A spindle (11) is provided in the upper mold (8). A feeding port (12) is made on the spindle (11). The lower end of the feeding port (12) communicates with the mold cavity. A mold opening and closing device is provided on the machine tool body (1). The mold opening and closing device drives The main spindle (11) and the upper mold (8) open upwards or close downwards. The mold opening and closing device includes a slide (15) set on the upper part of the machine tool body (1), a slide rail (16) set on the side wall of the slide (15), a slider (17) set on the slide rail (16), a servo motor (18) set on the slide (15), the output shaft of the servo motor (18) connected to a lead screw (19), a lead screw nut (20) set on one side of the slider (17), the lead screw (19) and the lead screw nut (20) are threaded together, the upper end of the main spindle (11) passes through the machine tool body (1) and is rotatably connected to the slider (17) through a limiting component, the middle mold (9) is set above the lower mold (10), and in A lifting device is provided in the upper box (3), which drives the middle mold (9) to move up and down. A rotating seat (13) is provided at the bottom of the lower mold (10), and a rotating shaft (14) is connected to the rotating seat (13). A mold rotation drive device is provided in the lower box (4), which drives the rotating shaft (14) to rotate. The rotation drive device includes a motor (41), which is fixed to the lower box (4). A synchronous pulley (42) is provided at the bottom of the rotating shaft (14). A synchronous belt (43) is provided between the output shaft of the motor (41) and the synchronous pulley (42). The motor (41) drives the synchronous pulley (42) and the rotating shaft (14) to rotate via the synchronous belt (43).

2. The elevator guide wheel casting machine as described in claim 1, characterized in that: The limiting component includes a retaining ring (31) located on the upper part of the slider (17) on the outer wall of the spindle (11), the retaining ring (31) being in a limiting fit with the spindle (11), a bearing (32) located on the lower part of the slider (17) on the outer wall of the spindle (11), the outer wall of the bearing (32) being in contact with the bottom of the slider (17), a positioning groove (51) being formed on one side of the rotating seat (13), a rotating rod (52) being provided in the machine tool body (1), a positioning bearing (53) being connected to the upper end of the rotating rod (52), the positioning bearing (53) being in fit with the positioning groove (51), a rotating arm (54) being connected to the upper end of the rotating rod (52), and a positioning cylinder (55) being provided in the machine tool body (1), the piston rod of the positioning cylinder (55) being connected to the rotating arm (54).

3. The elevator guide wheel casting machine as described in claim 1, characterized in that: The lifting device includes two or more sets of lifting cylinders (27), the lifting cylinders (27) are fixed to the partition (2), the lifting push block (28) is provided on the lifting cylinder (27), and two or more lifting protrusions (29) are made on the side wall of the middle mold (9), the lifting push block (28) is in contact with the underside of the lifting protrusion (29).

4. The elevator guide wheel casting machine as described in claim 1, characterized in that: The rotating seat (13) has a positioning groove (51) on one side. A rotating rod (52) is provided in the machine tool body (1). The upper end of the rotating rod (52) is connected to a positioning bearing (53). The positioning bearing (53) cooperates with the positioning groove (51). The upper end of the rotating rod (52) is connected to a rotating arm (54). A positioning cylinder (55) is provided in the machine tool body (1). The piston rod of the positioning cylinder (55) is connected to the rotating arm (54).

5. The elevator guide wheel casting machine as described in claim 1, characterized in that: The rotating seat (13) is provided with a positioning rod (61), and positioning holes (62) are respectively made in the upper mold (8) and the middle mold (9). When the mold is closed, the positioning rod (61) is inserted into the positioning hole (62).

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