Spheroidal graphite cast pipe modeling turnover machine and method thereof

Abstract

The upender comprises a rack, the top ends of the two sides of the inner wall of the rack are rotationally connected with rotating shafts through bearings correspondingly, and the two sides of the inner wall of the rack are connected with a first side plate and a second side plate through the rotating shafts correspondingly; the bottom of the first side plate and the bottom of the second side plate are fixedly connected with a transverse frame, the middle of the first side plate and the top of the second side plate are fixedly connected with a plurality of lower positioning wheels respectively, the top of the first side plate is slidably connected with a displacement plate, and the surface of the displacement plate is fixedly connected with a plurality of upper positioning wheels. The upper positioning wheel set and the lower positioning wheel set are used for positioning the mold, the stop lever is arranged for limiting in the front to prevent the mold from sliding off, then the servo motor can be started to drive the mold to turn over horizontally, turning over is completed, graphite powder on the surface is poured out, and rapidness and high efficiency are achieved.

Description

Technical Field

[0001] The present invention relates to the technical field of turnover machines, and particularly to a nodular cast iron pipe molding turnover machine and a method thereof. Background Art

[0002] The nodular cast iron pipe molding is to pour liquid cast iron into a specific mold, and use spheroidizing treatment technology to make the graphite in the cast iron present a spherical structure, thereby improving the strength, toughness and corrosion resistance of the pipe.

[0003] During the nodular cast iron pipe process, a turnover machine is needed to turn over the mold and pour the graphite powder on its surface. However, the existing turnover machines have the following disadvantages:

[0004] (1) The existing turnover machines are not fast and efficient enough in turning over the nodular cast iron pipe mold, and the pouring effect of the graphite powder on its surface is not good;

[0005] (2) The existing turnover machines lack an adjustable positioning structure and cannot be applied to nodular cast iron pipe molds with different thicknesses, resulting in poor flexibility. Summary of the Invention

[0006] The purpose of the present invention is to provide a nodular cast iron pipe molding turnover machine and a method thereof, so as to solve the problems in the above background art that the existing turnover machines are not fast and efficient enough in turning over the nodular cast iron pipe mold, the pouring effect of the graphite powder on its surface is not good, the turnover machines lack an adjustable positioning structure and cannot be applied to nodular cast iron pipe molds with different thicknesses, resulting in poor flexibility.

[0007] To achieve the above purpose, the present invention provides the following technical solutions:

[0008] A nodular cast iron pipe molding turnover machine includes a frame. The top ends of both sides of the inner wall of the frame are respectively rotatably connected to a rotating shaft through bearings, and both sides of the inner wall of the frame are respectively connected to a side plate one and a side plate two through the rotating shaft;

[0009] The bottoms of the side plate one and the side plate two are fixedly connected to a cross frame. The middle of the side plate one and the top of the side plate two are respectively fixedly connected with a plurality of lower positioning wheels. The top of the side plate one is slidably connected to a displacement plate. The surface of the displacement plate is fixedly connected with a plurality of upper positioning wheels. Locking mechanisms are installed at the top ends of both ends of the displacement plate. The back of the cross frame is fixedly connected to a stop bar. Purge mechanisms are installed at the bottoms of both sides of the inner wall of the frame. A transmission cavity is provided inside the frame on the side close to the side plate one.

[0010] Furthermore, one end of the rotating shaft far from the side plate one passes through the inner wall of the transmission cavity and is fixedly connected to a driven belt pulley. A servo motor is fixedly installed at the bottom of the frame on the side close to the side plate one. The output end of the servo motor passes through the inner wall of the transmission cavity and is fixedly connected to a driving belt pulley.

[0011] Further, an outer ring of the driving pulley and the driven pulley is commonly sleeved with a transmission belt.

[0012] Further, the purging mechanism includes a blower, a cloth air duct, and a plurality of nozzle. The blower is fixedly installed on the surface of the frame, an output end of the blower is connected with the cloth air duct, and the plurality of nozzles are arranged on the surface of the cloth air duct at intervals.

[0013] Further, the locking mechanism includes a groove, a spring, a clamping block, and an unlocking column. A groove is formed in a top of the displacement plate, the spring is arranged in the groove, one end of the spring is fixedly connected with the clamping block, the other end of the spring is fixed to an inner wall of the groove, the unlocking column penetrates through a top end of the groove, and a plurality of clamping grooves are respectively formed in two sides of an inner wall of a top of the first side plate.

[0014] Further, an inclined surface groove is formed in a top end of the clamping block, and one end of the clamping block is clamped with an inner wall of one of the clamping grooves.

[0015] Further, positioning holes are formed in the displacement plate at intervals, positioning columns are arranged in the positioning holes, a bottom end of each positioning column penetrates through the positioning hole and is connected with the first side plate.

[0016] A method for a nodular cast iron pipe molding turnover machine:

[0017] During use, on a side close to the second side plate, a nodular cast iron pipe is clamped and pushed into the turnover machine by means of a conveying structure, one side of the mold is clamped between an upper positioning wheel and a lower positioning wheel at the first side plate, a bottom of the other side of the mold is clamped between two groups of lower positioning wheels of the second side plate to play a positioning role, and a stop bar is arranged in front for limiting to prevent slipping, so as to complete the placement of the mold on the turnover machine;

[0018] After the mold is positioned and placed, the servo motor is started. Under the cooperation of the driving pulley, the transmission belt and the driven pulley, the mold can be driven to horizontally turn over by 180°, so as to complete turning over and pouring out graphite powder on the surface, which is fast and efficient. At the same time, the blowers on the purging mechanisms on both sides can be started to introduce external air into the cloth air duct and blow out from the plurality of nozzles, so that the cleaning effect of the graphite powder on the mold is better. After purging, the mold is pushed away by means of the conveying structure, and the next mold is sent into the turnover machine;

[0019] Further, during use, through the arranged positioning columns and positioning holes, the displacement plate can slide up and down to adjust the position. At the same time, by pressing the unlocking columns on both sides above the displacement plate, under the cooperation of the inclined surface grooves, the clamping blocks on both sides can be squeezed and compressed back into the grooves. At this time, the displacement plate can be moved up and down to change the position of the upper positioning wheel. After the adjustment is completed, the unlocking columns are released, and the clamping blocks will pop out under the action of the spring and be clamped with the corresponding clamping grooves to lock the position of the displacement plate. Thus, by adjusting the distance between the upper positioning wheel group and the lower positioning wheel group, the turnover of nodular cast iron pipe molds with different thicknesses can be adapted.

[0020] Compared with the prior art, the beneficial effects of the present invention are as follows:

[0021] 1. Clamp one side of the ductile iron pipe mold between the upper positioning wheel and the lower positioning wheel at one place on the side plate, and clamp the bottom of the other side of the mold between the two groups of lower positioning wheels on the second side plate to play a positioning role. Set the stop bar in the front to limit and prevent slipping. Then, the servo motor can be started to drive the mold to horizontally flip 180°, complete the turning over and pour out the graphite powder on the surface, which is fast and efficient. At the same time, the fans on the two sides of the purging mechanism can be started to introduce external air into the air distribution pipe and blow out from several nozzles, which has a better cleaning effect on the graphite powder on the mold;

[0022] 2. By simultaneously pressing the unlocking columns on both sides above the displacement plate, the clamping blocks on both sides are squeezed and retracted into the grooves. At this time, the displacement plate can be moved up and down to change the position of the upper positioning wheel. After completion, release the unlocking columns, and the clamping blocks will pop out under the action of the springs and engage with the corresponding card slots to lock the position of the displacement plate. Thus, by adjusting the distance between the upper positioning wheel group and the lower positioning wheel group, it can be applicable to the flipping of ductile iron pipe molds with different thicknesses, and has good flexibility. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] Figure 1 is a perspective view of the present invention;

[0024] Figure 2 is a cross-sectional view of the present invention;

[0025] Figure 3 is a side view of the side plate of the present invention;

[0026] Figure 4 is a cross-sectional view of the locking mechanism of the present invention.

[0027] In the figure: 1. Frame; 2. Rotating shaft; 3. First side plate; 4. Cross frame; 5. Stop bar; 6. Displacement plate; 7. Lower positioning wheel; 8. Locking mechanism; 801. Groove; 802. Spring; 803. Clamping block; 804. Unlocking column; 9. Upper positioning wheel; 10. Transmission cavity; 11. Servo motor; 12. Driving pulley; 13. Driven pulley; 14. Transmission belt; 15. Positioning column; 16. Positioning hole; 17. Card slot; 18. Purging mechanism; 181. Fan; 182. Air distribution pipe; 183. Nozzle; 19. Inclined groove; 20. Second side plate. DETAILED DESCRIPTION OF THE INVENTION

[0028] Next, the technical solutions in the embodiments of the present invention will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. All other embodiments obtained by those of ordinary skill in the art based on the embodiments of the present invention without creative efforts shall fall within the protection scope of the present invention.

[0029] Please refer to Figures 1-4 , the present invention provides a nodular cast iron pipe molding turnover machine, including a frame 1. The top ends on both sides of the inner wall of the frame 1 are respectively rotatably connected to a rotating shaft 2 through bearings. On both sides of the inner wall of the frame 1, a first side plate 3 and a second side plate 20 are respectively connected through the rotating shaft 2;

[0030] A cross frame 4 is fixedly connected to the bottoms of the first side plate 3 and the second side plate 20. A plurality of lower positioning wheels 7 are respectively fixedly connected to the middle of the first side plate 3 and the top of the second side plate 20. A displacement plate 6 is slidably connected to the top of the first side plate 3. A plurality of upper positioning wheels 9 are fixedly connected to the surface of the displacement plate 6. Locking mechanisms 8 are installed at the tops of both ends of the displacement plate 6. A stop rod 5 is fixedly connected to the back of the cross frame 4. Blow cleaning mechanisms 18 are installed at the bottoms of both sides of the inner wall of the frame 1. A transmission cavity 10 is provided inside the frame 1 on the side close to the first side plate 3.

[0031] The mold is positioned by the upper positioning wheel group and the lower positioning wheel group, and the stop rod 5 is set in the front for limit to prevent slipping. Then, the servo motor 11 can be started to drive the mold to be horizontally turned over, completing the turnover and pouring out the graphite powder on the surface, which is fast and efficient;

[0032] One end of the rotating shaft 2 far from the first side plate 3 passes through the inner wall of the transmission cavity 10 and is fixedly connected to a driven belt pulley 13. A servo motor 11 is fixedly installed at the bottom of the frame 1 on the side close to the first side plate 3. The output end of the servo motor 11 passes through the inner wall of the transmission cavity 10 and is fixedly connected to a driving belt pulley 12, and the servo motor 11 drives the positioned and clamped nodular cast iron pipe mold to be turned over.

[0033] A transmission belt 14 is jointly sleeved on the outer circles of the driving belt pulley 12 and the driven belt pulley 13, and the transmission belt 14 plays a role in transmission between the two belt pulleys.

[0034] The blow cleaning mechanism 18 is used to clean the graphite powder on the mold. The blow cleaning mechanism 18 includes a blower 181, a cloth air duct 182 and a plurality of blow nozzles 183. The blower 181 is fixedly installed on the surface of the frame 1. The output end of the blower 181 is connected to the cloth air duct 182. A plurality of blow nozzles 183 are arranged at intervals on the surface of the cloth air duct 182; the blower 181 introduces the external air and blows it out through the plurality of blow nozzles 183 on the cloth air duct 182;

[0035] The locking mechanism 8 is used to fix the position of the displacement plate 6. The locking mechanism 8 includes a groove 801, a spring 802, a clamping block 803 and an unlocking column 804. A groove 801 is formed at the top of the displacement plate 6. A spring 802 is arranged in the groove 801. One end of the spring 802 is fixedly connected with a clamping block 803, and the other end of the spring 802 is fixed to the inner wall of the groove 801. The unlocking column 804 is inserted through the top end of the groove 801. On both sides of the inner wall of the top of the first side plate 3, a number of clamping grooves 17 are formed.

[0036] The top end of the clamping block 803 is provided with an inclined groove 19. One end of the clamping block 803 is engaged with the inner wall of one of the clamping grooves 17 to achieve the locking effect. When the unlocking column 804 is pressed down, the clamping block 803 will be squeezed and retracted into the groove 801 by itself.

[0037] The positioning holes 16 are spaced apart on the surface of the displacement plate 6. The positioning columns 15 are inserted into the positioning holes 16. The bottom end of the positioning column 15 penetrates through the positioning hole 16 and is connected to the first side plate 3. The positioning column 15 plays a guiding role in the up and down movement of the displacement plate 6.

[0038] During use, on the side close to the second side plate 20, with the help of the conveying structure, the ductile iron pipe mold is clamped and pushed into the tilter. One side of the mold is clamped between the upper positioning wheel 9 and the lower positioning wheel 7 at the first side plate 3, and the bottom of the other side of the mold is clamped between the two groups of lower positioning wheels 7 of the second side plate 20 to play a positioning role. The stop bar 5 is set in front for limiting to prevent slipping, and the placement of the mold on the tilter is completed.

[0039] After the mold is positioned and placed, the servo motor 11 is started. With the cooperation of the driving pulley 12, the transmission belt 14 and the driven pulley 13, the mold can be driven to horizontally rotate 180°, completing the turning over and pouring out the graphite powder on the surface, which is fast and efficient. At the same time, the fans 181 on the two sides of the purging mechanism 18 can be started to introduce external air into the air distribution pipe 182 and blow out from a number of nozzles 183, which has a better cleaning effect on the graphite powder on the mold. After purging, the mold is pushed away by the conveying structure, and the next mold is sent into the tilter.

[0040] During use, through the arranged positioning columns 15 and positioning holes 16, the displacement plate 6 can slide up and down to adjust the position. At the same time, by pressing the unlocking columns 804 on both sides above the displacement plate 6, with the cooperation of the inclined groove 19, the clamping blocks 803 on both sides can be squeezed and retracted into the groove 801. At this time, the displacement plate 6 can be moved up and down to change the position of the upper positioning wheel 9. After the adjustment is completed, the unlocking column 804 is released, and the clamping block 803 will pop out under the action of the spring 802 and engage with the corresponding clamping groove 17 to lock the position of the displacement plate 6. Thus, by adjusting the distance between the upper positioning wheel 9 group and the lower positioning wheel 7 group, it can be applicable to the turning over of ductile iron pipe molds with different thicknesses, and has good flexibility.

[0041] 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 perform equivalent replacements for some of the technical features. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principle of the present invention shall be included within the protection scope of the present invention.

Claims

1. A ductile iron pipe molding turning machine, comprising a frame (1), characterized in that: The top ends of both sides of the inner wall of the frame (1) are rotatably connected to a rotating shaft (2) via bearings, and the two sides of the inner wall of the frame (1) are connected to a side plate 1 (3) and a side plate 2 (20) via the rotating shaft (2); The bottoms of the side panels 1 (3) and 2 (20) are fixedly connected to a cross frame (4); the middle of the side panel 1 (3) and the top of the side panel 2 (20) are respectively fixedly connected to a plurality of lower positioning wheels (7); the top of the side panel 1 (3) is slidably connected to a displacement plate (6); the surface of the displacement plate (6) is fixedly connected to a plurality of upper positioning wheels (9); the tops of both ends of the displacement plate (6) are both provided with locking mechanisms (8); the back of the cross frame (4) is fixedly connected to a blocking rod (5); the bottoms of both sides of the inner wall of the frame (1) are both provided with purge mechanisms (18); and a transmission chamber (10) is provided inside the frame (1) on a side close to the side panel 1 (3).

2. A ductile iron pipe molding turning machine according to claim 1, characterized in that: The end of the rotating shaft (2) away from the side plate (3) passes through the inner wall of the transmission cavity (10) and is fixedly connected to a driven pulley (13); a servo motor (11) is fixedly installed at the bottom of the frame (1) on the side close to the side plate (3); the output end of the servo motor (11) passes through the inner wall of the transmission cavity (10) and is fixedly connected to a driving pulley (12).

3. A ductile iron pipe molding turning machine according to claim 2, characterized in that: The outer rings of the driving pulley (12) and the driven pulley (13) are jointly sleeved with a transmission belt (14).

4. A ductile iron pipe molding turning machine according to claim 3, characterized in that: The blowing mechanism (18) comprises a fan (181), an air distribution pipe (182) and a plurality of blowing nozzles (183); the fan (181) is fixedly mounted on the surface of the frame (1); the output end of the fan (181) is connected to the air distribution pipe (182); and the surface of the air distribution pipe (182) is provided with a plurality of blowing nozzles (183) at intervals.

5. A ductile iron pipe molding turning machine according to claim 4, characterized in that: The locking mechanism (8) comprises a groove (801), a spring (802), a block (803) and an unlocking column (804); the top of the displacement plate (6) is provided with a groove (801), a spring (802) is arranged in the groove (801), one end of the spring (802) is fixedly connected with the block (803), the other end of the spring (802) is fixed with the inner wall of the groove (801), the top of the groove (801) is interlaced with the unlocking column (804), and both sides of the inner wall of the top of the side plate (3) are provided with a plurality of slots (17).

6. A ductile iron pipe molding turning machine according to claim 5, characterized in that: The top end of the clamping block (803) is provided with an inclined groove (19), and one end of the clamping block (803) is clamped with the inner wall of one of the clamping grooves (17).

7. A ductile iron pipe molding turning machine according to claim 6, characterized in that: Positioning holes (16) are arranged at intervals on the surface of the displacement plate (6), and a positioning column (15) is inserted into the positioning hole (16). The bottom end of the positioning column (15) passes through the positioning hole (16) and is connected to the side plate (3).

8. The method of a ductile iron pipe molding turning machine according to claim 7, characterized in that: When in use, the ductile iron pipe mold is clamped and pushed into the turning machine on the side close to the second side plate (20) with the help of the conveying structure, so that one side of the mold is clamped between the upper positioning wheel (9) and the lower positioning wheel (7) at the first side plate (3), and the bottom of the other side of the mold is clamped between the two groups of lower positioning wheels (7) of the second side plate (20), which plays a positioning role, and a stopper (5) is set at the front to limit and prevent sliding, so that the mold is placed on the turning machine; After the mold is positioned and placed, the servo motor (11) is started, and the cooperation of the active pulley (12), the transmission belt (14) and the driven pulley (13) can drive the mold to flip horizontally by 180 degrees, completing the flip and dumping the graphite powder on the surface, which is fast and efficient. At the same time, the fans (181) on the purge mechanisms (18) on both sides can be started to introduce external air into the air distribution pipe (182) and blow it out from a plurality of blowing nozzles (183), so as to have a better cleaning effect on the graphite powder on the mold. After the purge is completed, the conveying structure is used to push the mold away, and the next mold is sent to the flipping machine.

9. The method of a ductile iron pipe molding turning machine according to claim 8, characterized in that: When in use, the displacement plate (6) can slide up and down to adjust its position through the provided positioning columns (15) and positioning holes (16). At the same time, by pressing the unlocking columns (804) on both sides above the displacement plate (6), the clamping blocks (803) on both sides can be squeezed back into the grooves (801) with the cooperation of the inclined grooves (19). At this time, the displacement plate (6) can be moved up and down to change the position of the upper positioning wheel (9). After the adjustment is completed, the unlocking columns (804) are released, and the clamping blocks (803) will pop out under the action of the spring (802) and engage with the corresponding clamping grooves (17) to lock the position of the displacement plate (6). Therefore, by adjusting the distance between the upper positioning wheel (9) group and the lower positioning wheel (7) group, it can be suitable for turning over ductile iron pipe molds of different thicknesses.

Images