Sealing type steel pipe grinding plastic mold

Abstract

The invention relates to the technical field of steel pipe molds, in particular to a sealed steel pipe grinding plastic mold which comprises a main body shell, a grinding mechanism for grinding and shaping the inner wall of a steel pipe is arranged in a main body ring, and the grinding mechanism comprises a connecting plate fixedly connected with the inner side face of the main body ring; the upper end of the main body shell is provided with a centrifugal forming mechanism for rotating the main body ring, the upper end of the main body ring is provided with a sealing injection mechanism for injecting materials into a mold under a sealing condition, and the upper end of the fixing ring is provided with a grinding demolding mechanism for grinding and separating a formed steel pipe; under the action of centrifugal force, the hot melting material can be evenly smeared on the inner side of the main body ring, the centrifugal force is controlled by controlling the rotating speed of the main body ring, steel pipes with different thicknesses can be manufactured, the universality is high, the inner side of the steel pipe does not make contact with a mold in the forming process, and the adhesive force between the steel pipe and the mold can be greatly reduced.

Description

Technical Field

[0001] The invention relates to the technical field of steel pipe moulds, in particular to a sealed steel pipe grinding plastic mould. Background Art

[0002] There are many methods for producing steel pipes. The most common one is hot melt molding, which is to heat the steel pipe material to a hot melt state, and then inject the hot melt material into a high-temperature resistant plastic mold. After the temperature drops, the required steel pipe model can be formed, and then the steel pipe can be taken out.

[0003] The traditional hot-melt forming method of steel pipes requires that the hot-melt material and the plastic mold fit perfectly, resulting in a large contact surface area between the steel pipe and the mold. In the subsequent demolding process, due to the large adhesion between the steel pipe and the mold, the side of the steel pipe is prone to damage the mold, reducing the safety of the device. In the process of removing the steel pipe, the side of the steel pipe is easily scratched by the mold and needs to be polished again later. The operation is cumbersome. Each size of steel pipe requires a corresponding mold. The mold has poor versatility and high production costs. Summary of the invention

[0004] The purpose of the present invention is to solve the shortcomings of the background technology and to propose a sealed steel pipe grinding plastic mold.

[0005] To achieve the above objectives, the technical solution adopted by the present invention is: a sealed steel pipe grinding plastic mold, comprising a main body shell, the upper end of the main body shell is an open structure, a main body ring is arranged inside the main body shell, a grinding mechanism for grinding and shaping the inner wall of the steel pipe is arranged inside the main body ring, the grinding mechanism comprises a connecting plate fixedly connected to the inner side surface of the main body ring, the connecting plate is rotatably arranged with the lower end of the main body shell, a centrifugal forming mechanism for rotating the main body ring is arranged at the upper end of the main body shell, the centrifugal forming mechanism comprises a fixing ring fixedly connected to the upper end of the main body shell, a sealed injection mechanism for injecting material into the mold under a sealed condition is arranged at the upper end of the main body ring, a grinding demolding mechanism for grinding and separating the formed steel pipe is arranged at the upper end of the fixing ring, and a support plate is fixedly connected to the lower end of the main body shell.

[0006] Preferably, the upper end of the connecting plate is fixedly connected to a fourth motor, the transmission shaft end of the fourth motor is fixedly connected to a third rotating rod, the upper end of the third rotating rod is fixedly connected to a fifth electric telescopic rod, the telescopic end of the fifth electric telescopic rod is fixedly connected to a grinding plate, a plurality of equidistantly arranged limit grooves are provided on the side surface of the grinding plate, a plurality of springs are respectively arranged in the limit grooves, the ends of a plurality of the springs are respectively fixedly connected to pressure sensors, and the ends of a plurality of the pressure sensors are respectively fixedly connected to top blocks that slide in cooperation with the limit grooves.

[0007] Preferably, the sealing injection mechanism includes a first fixed body fixedly arranged on the side of the main body ring, the upper end of the first fixed body is fixedly connected to the steering motor, the transmission shaft end of the steering motor is fixedly connected to the second fixed body, the side of the second fixed body is provided with a third electric telescopic rod, the telescopic end of the third electric telescopic rod is fixedly connected to the third fixed body, and a vertically placed injection rod is provided in the third fixed body.

[0008] Preferably, a second cavity is opened in the third fixed body, the upper end of the third fixed body is fixedly connected to a third motor, the transmission shaft end of the third motor is fixedly connected to a second rotating rod that passes through the second cavity, the side of the second rotating rod is fixedly connected to a second gear, and a threaded ring is provided on the side of the injection rod, and the side of the threaded ring is fixedly connected to a second gear ring.

[0009] Preferably, the second gear ring is meshed with the second gear, and the inner side of the threaded ring is threadedly matched with the outer side of the injection rod.

[0010] Preferably, a hollow groove is provided at the upper end of the main body ring, a rotating body is rotatably arranged in the hollow groove at a position close to the upper end, a water inlet and a water outlet are respectively provided at the upper end of the rotating body, a mounting plate is fixedly connected to the top of the main body ring by bolts, and a one-way valve is provided at the upper end of the mounting plate.

[0011] Preferably, the upper end of the fixing ring is fixedly connected to a first motor, the transmission shaft end of the first motor is fixedly connected to a first rotating rod, the side of the first rotating rod is fixedly connected to a first gear, and the side of the main body ring is fixedly connected to a first gear ring meshing with the first gear.

[0012] Preferably, the upper end of the fixing ring is fixedly connected to a first electric telescopic rod, the telescopic end of the first electric telescopic rod is fixedly connected to a second electric telescopic rod, the telescopic end of the second electric telescopic rod is fixedly connected to a second motor, the transmission shaft end of the second motor is fixedly connected to a grinding rod, the lower end of the grinding rod is a drill bit structure, and the side of the grinding rod is a cutting edge structure.

[0013] Compared with the prior art, the present invention has the following beneficial effects:

[0014] 1. The first gear meshes to drive the first gear ring to rotate, thereby driving the main body ring to rotate. At the same time, the hot-melt material enters the inner side of the main body ring through the injection rod, and the third motor is started. The third motor drives the second gear to rotate through the second rotating rod. The second gear meshes to drive the second gear ring to rotate. Since the threaded ring and the third fixed body are rotatably arranged, when the threaded ring rotates, it can drive the injection rod to move up and down, so that the hot-melt material can be evenly applied to the inner side of the main body ring in the vertical direction. Under the action of centrifugal force, the hot-melt material can be evenly applied to the inner side of the main body ring. By controlling the rotation speed of the main body ring, the size of the centrifugal force can be controlled, and steel pipes of different thicknesses can be produced. The versatility is very high. In the process of forming, the inner side of the steel pipe does not contact the mold, which can greatly reduce the adhesion between the steel pipe and the mold, reduce the surface scratching of the steel pipe with the mold when the steel pipe is taken out, and improve the surface precision of the steel pipe after forming.

[0015] 2. The fourth motor drives the third rotating rod to rotate, and the third rotating rod drives the grinding plate to rotate through the fifth electric telescopic rod. At the same time, the fifth electric telescopic rod slowly extends. When the pressure sensor detects that the top block is in contact with the steel pipe, it stops extending. The grinding plate can scrape the inside of the steel pipe to make the inside of the steel pipe smoother. After the steel pipe is formed, the steering motor is started, and the steering motor drives the third fixed body to rotate 90°. Then the steering motor is started to move the injection rod to the bottom to ensure that the grinding rod and the second electric telescopic rod do not contact the injection rod. When the main ring continues to rotate, the second motor is started, and the second motor drives the grinding rod to rotate. Then the first electric telescopic rod contracts, driving the grinding rod to grind and penetrate the outside of the steel pipe. While the steel pipe is separated from the mold, the thickness of the steel pipe after demolding can be controlled by the contraction amount of the second motor. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 It is a schematic diagram of the overall structure of the present invention;

[0017] Figure 2 It is an overall cross-sectional view of the present invention;

[0018] Figure 3 It is a partial structural schematic diagram of the present invention;

[0019] Figure 4 For the present invention Figure 2 A magnified image of point A;

[0020] Figure 5 For the present invention Figure 2 A magnified view of point B;

[0021] Figure 6 For the present invention Figure 2 Enlarged view of point C;

[0022] Figure 7 For the present invention Figure 2Enlarged view of point D.

[0023] 1. Main body shell; 2. Centrifugal forming mechanism; 3. Grinding demoulding mechanism; 4. Sealing injection mechanism; 5. Grinding mechanism; 11. Support plate; 12. Main body ring; 21. Fixed ring; 22. First motor; 23. First rotating rod; 24. First gear ring; 25. First gear; 31. First electric telescopic rod; 32. Second electric telescopic rod; 33. Grinding rod; 34. Second motor; 41. First fixed body; 42. Injection rod; 43. Empty slot; 44. Second fixed body; 45. Third fixed body; 46. Second Rotating rod; 47, second gear; 49, second cavity; 410, threaded ring; 411, second gear ring; 412, third motor; 413, third electric telescopic rod; 414, steering motor; 415, rotating body; 416, water inlet; 417, water outlet; 418, one-way valve; 419, mounting plate; 51, third rotating rod; 52, fourth motor; 53, connecting plate; 54, fifth electric telescopic rod; 55, grinding plate; 56, limit groove; 57, spring; 58, pressure sensor; 59, top block. DETAILED DESCRIPTION

[0024] The following description is used to disclose the present invention so that those skilled in the art can implement the present invention. The preferred embodiments described below are only examples, and those skilled in the art may think of other obvious variations.

[0025] See also Figure 1-Figure 7 A sealed steel pipe grinding plastic mold comprises a main body shell 1, the upper end of the main body shell 1 is an open structure, a main body ring 12 is arranged inside the main body shell 1, and a grinding mechanism 5 for grinding and shaping the inner wall of the steel pipe is arranged inside the main body ring 12.

[0026] In this embodiment, the grinding mechanism 5 includes a connecting plate 53 fixedly connected to the inner side surface of the main body ring 12 , and the connecting plate 53 is rotatably arranged with the lower end of the main body shell 1 .

[0027] The upper end of the connecting plate 53 is fixedly connected to the fourth motor 52, the transmission shaft end of the fourth motor 52 is fixedly connected to the third rotating rod 51, the upper end of the third rotating rod 51 is fixedly connected to the fifth electric telescopic rod 54, the telescopic end of the fifth electric telescopic rod 54 is fixedly connected to the grinding plate 55, and the side of the grinding plate 55 is provided with a plurality of equidistantly arranged limiting grooves 56, and a plurality of springs 57 are respectively arranged in the limiting grooves 56, and the ends of a plurality of the springs 57 are respectively fixedly connected to pressure sensors 58, and the ends of a plurality of the pressure sensors 58 are respectively fixedly connected to top blocks 59 that slidably cooperate with the limiting grooves 56.

[0028] Specifically, the fourth motor 52 drives the third rotating rod 51 to rotate, and the third rotating rod 51 drives the grinding plate 55 to rotate through the fifth electric telescopic rod 54. At the same time, the fifth electric telescopic rod 54 slowly extends, and when the pressure sensor 58 detects that the top block 59 contacts the steel pipe, it stops extending. The grinding plate 55 can scrape the inside of the steel pipe to make the inside of the steel pipe smoother.

[0029] In this embodiment, a centrifugal forming mechanism 2 for rotating the main body ring 12 is disposed at the upper end of the main body shell 1 . The centrifugal forming mechanism 2 includes a fixing ring 21 fixedly connected to the upper end of the main body shell 1 .

[0030] The upper end of the fixed ring 21 is fixedly connected to a first motor 22, the transmission shaft end of the first motor 22 is fixedly connected to a first rotating rod 23, the side of the first rotating rod 23 is fixedly connected to a first gear 25, and the side of the main ring 12 is fixedly connected to a first gear ring 24 meshing with the first gear 25.

[0031] Specifically, the first motor 22 drives the first gear 25 to rotate through the first rotating rod 23 , and the first gear 25 meshes and drives the first gear ring 24 to rotate, thereby driving the main body ring 12 to rotate.

[0032] In this embodiment, a sealed injection mechanism 4 for injecting material into the mold under a sealed condition is disposed at the upper end of the main body ring 12 .

[0033] The sealing injection mechanism 4 includes a first fixed body 41 fixedly arranged on the side of the main body ring 12, the upper end of the first fixed body 41 is fixedly connected to a steering motor 414, the transmission shaft end of the steering motor 414 is fixedly connected to a second fixed body 44, a third electric telescopic rod 413 is arranged on the side of the second fixed body 44, the telescopic end of the third electric telescopic rod 413 is fixedly connected to a third fixed body 45, and a vertically placed injection rod 42 is arranged in the third fixed body 45.

[0034] A second cavity 49 is defined in the third fixed body 45, a third motor 412 is fixedly connected to the upper end of the third fixed body 45, a second rotating rod 46 penetrating the second cavity 49 is fixedly connected to the transmission shaft end of the third motor 412, a second gear 47 is fixedly connected to the side of the second rotating rod 46, a threaded ring 410 is provided on the side of the injection rod 42, and a second gear ring 411 is fixedly connected to the side of the threaded ring 410.

[0035] The second gear ring 411 is meshed with the second gear 47 , and the inner side of the threaded ring 410 is threadably matched with the outer side of the injection rod 42 .

[0036] The upper end of the main body ring 12 is provided with a hollow groove 43, and a rotating body 415 is rotatably arranged in the hollow groove 43 at a position close to the upper end. The upper end of the rotating body 415 is respectively provided with a water inlet 416 and a water outlet 417. The upper part of the main body ring 12 is fixedly connected with a mounting plate 419 by bolts, and a one-way valve 418 is arranged at the upper end of the mounting plate 419.

[0037] Specifically, the material in the hot-melt state enters the inner side of the main ring 12 through the injection rod 42, and the third motor 412 is started. The third motor 412 drives the second gear 47 to rotate through the second rotating rod 46, and the second gear 47 engages to drive the second gear ring 411 to rotate. Since the threaded ring 410 and the third fixed body 45 are rotatably arranged, when the threaded ring 410 rotates, it can drive the injection rod 42 to move up and down, so that the hot-melt material can be evenly applied to the inner side of the main ring 12 in the vertical direction. Under the action of centrifugal force, the hot-melt material can be evenly applied to the inner side of the main ring 12.

[0038] In this embodiment, a grinding and demoulding mechanism 3 for grinding and separating the formed steel pipe is disposed at the upper end of the fixing ring 21 , and a supporting plate 11 is fixedly connected to the lower end of the main body shell 1 .

[0039] The upper end of the fixing ring 21 is fixedly connected to a first electric telescopic rod 31, the telescopic end of the first electric telescopic rod 31 is fixedly connected to a second electric telescopic rod 32, the telescopic end of the second electric telescopic rod 32 is fixedly connected to a second motor 34, the transmission shaft end of the second motor 34 is fixedly connected to a grinding rod 33, the lower end of the grinding rod 33 is a drill bit structure, and the side of the grinding rod 33 is a cutting edge structure.

[0040] Specifically, the second motor 34 drives the polishing rod 33 to rotate, and then the first electric telescopic rod 31 contracts, driving the polishing rod 33 to polish and penetrate the outer side of the steel pipe. While the steel pipe is separated from the mold, the thickness of the steel pipe after demolding can be controlled by the contraction amount of the second motor 34.

[0041] When in use, before injecting, the first electric telescopic rod 31 is extended to the longest state to ensure that the lower end of the grinding rod 33 is located above the main body ring 12, and then the mounting plate 419 is installed on the upper end of the main body ring 12 by bolts, and the injection rod 42 is ensured to penetrate the mounting plate 419, and then the first motor 22 is started, and the first motor 22 drives the first gear 25 to rotate through the first rotating rod 23, and the first gear 25 meshes and drives the first gear ring 24 to rotate, thereby driving the main body ring 12 to rotate. At the same time, the hot-melt material enters the inner side of the main body ring 12 through the injection rod 42, and the third motor 412 is started, and the third motor 412 drives the second gear 47 to rotate through the second rotating rod 46, and the second gear 4 The meshing drives the second gear ring 411 to rotate. Since the threaded ring 410 and the third fixed body 45 are rotatably arranged, when the threaded ring 410 rotates, it can drive the injection rod 42 to move up and down, so that the hot-melt material can be evenly applied to the inner side of the main body ring 12 in the vertical direction. Under the action of centrifugal force, the hot-melt material can be evenly applied to the inner side of the main body ring 12. By controlling the rotation speed of the main body ring 12, the size of the centrifugal force can be controlled, and steel pipes of different thicknesses can be produced. The versatility is very high. In the process of forming, the inner side of the steel pipe does not contact the mold, which can greatly reduce the adhesion between the steel pipe and the mold, reduce the scratches between the surface of the steel pipe and the mold when the steel pipe is taken out, and improve the surface accuracy of the steel pipe after forming.

[0042] When the hot melt material is injected, cooling water is injected through the water inlet 416 and discharged through the water outlet 417, which can greatly increase the speed of steel pipe shaping. At the same time, the fourth motor 52 is started, and the fourth motor 52 drives the third rotating rod 51 to rotate. The third rotating rod 51 drives the grinding plate 55 to rotate through the fifth electric telescopic rod 54. At the same time, the fifth electric telescopic rod 54 is slowly extended. When the pressure sensor 58 detects that the top block 59 contacts the steel pipe, it stops extending. The grinding plate 55 can scrape the inside of the steel pipe to make the inside of the steel pipe smoother. When the steel pipe is formed, the steering motor 414 is started. , the steering motor 414 drives the third fixed body 45 to rotate 90°, and then the steering motor 414 is started to move the injection rod 42 to the bottom, ensuring that the polishing rod 33 and the second electric telescopic rod 32 do not contact the injection rod 42. When the main ring 12 continues to rotate, the second motor 34 is started, and the second motor 34 drives the polishing rod 33 to rotate. Then the first electric telescopic rod 31 contracts, driving the polishing rod 33 to polish and penetrate the outer side of the steel pipe. When the steel pipe is separated from the mold, the thickness of the steel pipe after demolding can be controlled by the contraction amount of the second motor 34, thereby improving the accuracy of the steel pipe after forming.

[0043] The above shows and describes the basic principles, main features and advantages of the present invention. Those skilled in the art should understand that the present invention is not limited to the above embodiments. The above embodiments and descriptions only describe the principles of the present invention. The present invention may be subject to various changes and improvements without departing from the spirit and scope of the present invention. These changes and improvements fall within the scope of the present invention. The scope of protection claimed by the present invention is defined by the attached claims and their equivalents.

Claims

1. A sealed steel pipe grinding plastic mold, comprising a main body shell (1), characterized in that: The upper end of the main body shell (1) is an open structure. A main body ring (12) is arranged inside the main body shell (1). A grinding mechanism (5) for grinding and shaping the inner wall of the steel pipe is arranged inside the main body ring (12). The grinding mechanism (5) includes a connecting plate (53) fixedly connected to the inner side surface of the main body ring (12). The connecting plate (53) is rotatably arranged with the lower end of the main body shell (1). The upper end of the main body shell (1) is provided with a centrifugal forming mechanism (2) for rotating the main body ring (12). The centrifugal forming mechanism (2) includes a fixing ring (21) fixedly connected to the upper end of the main body shell (1). The upper end of the main body ring (12) is provided with a sealed injection mechanism (4) for injecting material into the mold under a sealed condition. The upper end of the fixing ring (21) is provided with a grinding demoulding mechanism (3) for grinding and separating the formed steel pipe. The lower end of the main body shell (1) is fixedly connected with a support plate (11).

2. A sealed steel pipe grinding plastic mold according to claim 1, characterized in that: The upper end of the connecting plate (53) is fixedly connected to a fourth motor (52), the transmission shaft end of the fourth motor (52) is fixedly connected to a third rotating rod (51), the upper end of the third rotating rod (51) is fixedly connected to a fifth electric telescopic rod (54), the telescopic end of the fifth electric telescopic rod (54) is fixedly connected to a grinding plate (55), a side surface of the grinding plate (55) is provided with a plurality of equally spaced limiting grooves (56), a plurality of springs (57) are respectively arranged in the limiting grooves (56), the ends of a plurality of springs (57) are respectively fixedly connected to pressure sensors (58), and the ends of a plurality of pressure sensors (58) are respectively fixedly connected to top blocks (59) slidably matched with the limiting grooves (56).

3. A sealed steel pipe grinding plastic mold according to claim 1, characterized in that: The sealing injection mechanism (4) comprises a first fixed body (41) fixedly arranged on the side of the main body ring (12); the upper end of the first fixed body (41) is fixedly connected to a steering motor (414); the transmission shaft end of the steering motor (414) is fixedly connected to a second fixed body (44); a third electric telescopic rod (413) is arranged on the side of the second fixed body (44); the telescopic end of the third electric telescopic rod (413) is fixedly connected to a third fixed body (45); and a vertically placed injection rod (42) is arranged inside the third fixed body (45).

4. A sealed steel pipe grinding plastic mold according to claim 3, characterized in that: A second cavity (49) is defined in the third fixed body (45); a third motor (412) is fixedly connected to the upper end of the third fixed body (45); a second rotating rod (46) penetrating the second cavity (49) is fixedly connected to the transmission shaft end of the third motor (412); a second gear (47) is fixedly connected to the side of the second rotating rod (46); a threaded ring (410) is provided on the side of the injection rod (42); and a second gear ring (411) is fixedly connected to the side of the threaded ring (410).

5. A sealed steel pipe grinding plastic mold according to claim 4, characterized in that: The second gear ring (411) is meshed with the second gear (47), and the inner side of the threaded ring (410) is threadedly matched with the outer side of the injection rod (42).

6. The sealed steel pipe grinding plastic mold according to claim 1, characterized in that: The upper end of the main body ring (12) is provided with a hollow groove (43), a rotating body (415) is rotatably arranged in the hollow groove (43) at a position close to the upper end, a water inlet (416) and a water outlet (417) are respectively arranged at the upper end of the rotating body (415), a mounting plate (419) is fixedly connected to the upper part of the main body ring (12) by bolts, and a one-way valve (418) is arranged at the upper end of the mounting plate (419).

7. The sealed steel pipe grinding plastic mold according to claim 1, characterized in that: The upper end of the fixing ring (21) is fixedly connected to a first motor (22), the transmission shaft end of the first motor (22) is fixedly connected to a first rotating rod (23), the side of the first rotating rod (23) is fixedly connected to a first gear (25), and the side of the main body ring (12) is fixedly connected to a first gear ring (24) meshing with the first gear (25).

8. The sealed steel pipe grinding plastic mold according to claim 1, characterized in that: The upper end of the fixing ring (21) is fixedly connected to a first electric telescopic rod (31); the telescopic end of the first electric telescopic rod (31) is fixedly connected to a second electric telescopic rod (32); the telescopic end of the second electric telescopic rod (32) is fixedly connected to a second motor (34); the transmission shaft end of the second motor (34) is fixedly connected to a grinding rod (33); the lower end of the grinding rod (33) is a drill bit structure; and the side surface of the grinding rod (33) is a cutting edge structure.

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