A compression mold for steel-lined fluorine pipe
By designing automated switching and limiting structures, the problem of manual operation of steel-lined fluorine tube molding in the prior art is solved, and efficient compression molding is realized, which avoids damage and fall of the inner tube, and improves the Forming efficiency.
Patent Information
- Application Number
- CN202411476065.3
- Authority / Receiving Office
- CN · China
- Patent Type
- Patents(China)
- Current Assignee / Owner
- Filing Date
- 2024-10-22
- Publication Date
- 2024-12-20
- Estimated Expiration
- 2044-10-22
AI Technical Summary
Existing compression molds require manual clamping and adjustment of the mold during the forming process of steel-lined fluorine tubes, which leads to time-consuming and labor-intensive operation and reduces working efficiency.
A compression mold including a base plate, a support plate, an outer steel pipe and an inner pipe was designed to realize the automatic switching and movement of the expansion and extrusion parts by switching structures and hydraulic cylinders, and use the limit structure and rotating structure to avoid the inner pipe. Adhesion and dropping to improve operational ease and efficiency.
Automatic compression molding of steel-lined fluorine tubes is realized, which reduces the labor intensity of manual operation, improves work efficiency, and avoids damage to the inner tube during the molding process and falls on the support plate.
Smart Images
Figure CN118977405B_ABST
Abstract
Description
Technical Field
[0001] The invention relates to the technical field of compression moulds, in particular to a compression mould for steel lined fluorine pipes. Background Art
[0002] Fluorine-lined pipes and accessories enjoy the reputation of "King of Plastics" and have excellent heat resistance and corrosion resistance. They are ideal transportation equipment for highly corrosive media such as nitric acid, sulfuric acid, hydrofluoric acid, phosgene, chlorine, aqua regia, mixed acid, bromide and other organic solvents. When forming steel fluorine-lined pipes, a compression mold is needed to extrude the end of the inner pipe and form it with the outer steel pipe.
[0003] The compression molding die in the prior art first heats and softens one end of the inner tube, manually clamps the expansion die, pushes the expansion die through the extrusion structure to expand the softened inner tube end, and then switches the extrusion molding die, and pushes the extrusion molding die through the extrusion structure to extrude the expanded inner tube end to achieve compression molding of the steel lined fluorine tube;
[0004] However, during the operation, it is necessary to manually clamp and lift the expansion mold and the extrusion molding mold to carry out the molding process, and after manually clamping and lifting the expansion mold and the extrusion molding mold, it is also necessary to adjust the position of the expansion mold and the extrusion molding mold. This operation is time-consuming and labor-intensive, and reduces work efficiency. Therefore, there is room for improvement. Summary of the invention
[0005] In order to solve the problems raised in the above background technology, the present invention provides a compression mold for a steel-lined fluorine pipe.
[0006] The present invention provides a compression mold for a steel-lined fluorine pipe using the following technical solution:
[0007] A compression molding mold for a steel-lined fluorine tube, comprising a base plate, a support plate, an outer steel tube and an inner tube, wherein two support plates are connected to the base plate near the left side, and a support groove is opened at the top of each support plate, the outer steel tube is supported in the support groove, and a limited position edge is arranged at the edge of the support groove wall, and the limited position edge is attached to the edge of the end face of the outer steel tube, and a limited position structure is arranged on the support plate on the right side, a movable seat is arranged at the right side of the base plate through a movable structure, and a switching column is arranged on the movable seat through a switching structure, a connecting column is rotatably passed through the top end of the switching column, an expansion piece is installed on one end of the connecting column, and one end of the expansion piece is in a cone shape, and an extrusion piece is installed on the other end of the connecting column, a second plug rod is connected to the connecting column near the extrusion piece, and a rotating structure is arranged at the front side of the base plate.
[0008] Preferably, the switching structure includes a switching seat rotatably connected to the middle part of the moving seat, the bottom end of the switching column is welded to the switching seat, the switching seat is movably sleeved with a lifting cylinder, the edge of the lifting cylinder is movably passed through a guide rod, the bottom end of the guide rod is connected to the moving seat, the top end of the side surface of the lifting cylinder is fixedly inserted with a first plug rod, a plurality of vertical slots are opened at the lower part of the side surface of the switching seat, the switching seat is provided with a second inclined slot connecting the right side of the top end of the vertical slot, the switching seat is provided with a first inclined slot connecting the left side of the top end of the vertical slot, two adjacent first inclined slots are connected to the second inclined slots, one end of the first plug rod is movably inserted into the second inclined slot, the top end of the side surface of the lifting cylinder is connected with a through rod, and the first vertical plate is connected to the position of the bottom plate near the through rod, the first vertical plate is provided with a first guide slot, the first guide slot is in an "S" shape, and one end of the through rod movably passes through the first guide slot.
[0009] Preferably, the movable structure includes a mounting plate connected to the right side of the base plate near the position of the movable seat, a hydraulic cylinder is installed on the mounting plate, one end of the hydraulic cylinder output shaft is connected to the movable seat, a transverse groove for the movable seat to be inserted into is provided on the base plate, a transverse rod is connected between the groove walls at both ends of the transverse groove, and a through hole is provided on the movable seat for the transverse rod to pass through.
[0010] Preferably, the rotating structure includes a second vertical plate arranged at a front side position on the base plate, the bottom end of the second vertical plate is arranged on the base plate through a reciprocating structure, an arc plate is installed on the top end of the second vertical plate, a straight groove is provided on the inner wall of the arc plate at a position away from the support plate, and an arc groove connecting one end of the straight groove is provided on the inner wall of the arc plate.
[0011] Preferably, the reciprocating structure includes a driving plate installed on the bottom end of the second vertical plate, and longitudinal grooves are provided on both sides of the bottom plate below the driving plate. A longitudinal rod is connected between the groove walls at the front and rear ends of the longitudinal groove, and the driving plate is movably mounted on the two longitudinal rods. A driving structure is provided between the driving plate and the movable seat.
[0012] Preferably, the driving structure includes a second guide groove formed on the driving plate, an L-shaped rod is connected to the middle of the front and rear surfaces of the movable seat, and one end of the L-shaped rod is movably inserted into the second guide groove.
[0013] Preferably, the limiting structure includes an inner groove opened at the front and rear sides of the support plate, the top ends of the inner walls on both sides of the inner groove are rotatably connected with a rotating shaft, a fixed sleeve on the rotating shaft is provided with a gear, a fixed sleeve on one end of the rotating shaft is provided with a limiting bar, a vertical bar movably inserted into the inner groove, a driving bar is connected to the top end of the vertical bar, the driving bar is provided with teeth meshing with the gear, a spring is connected between the bottom end of the vertical bar and the bottom end groove wall of the inner groove, the bottom end of the vertical bar is connected to an extrusion block passing through the inner groove, the bottom of the extrusion block is inclined, and an extrusion structure is provided on the movable seat.
[0014] Preferably, the extrusion structure comprises a fixing plate connected to the left edge of the front side of the moving seat, the fixing plate is provided with an opening, and an extrusion wheel is arranged in the opening.
[0015] In summary, the present invention includes the following beneficial technical effects:
[0016] The present invention connects the expansion piece and the extrusion piece through a connecting column at the top of the switching column, and the bottom end of the switching column is arranged on the bottom plate through a switching structure and a moving structure. After the steel-lined fluorine tube to be pressed is placed on the support plate, the expansion piece and the extrusion piece can be directly driven by the structure to press-form the inner tube after the end is heated. In addition, when the switching rod moves back and forth, the switching structure drives the switching rod to rotate, and the expansion piece and the extrusion piece are automatically switched, so the operation is more labor-saving and convenient, and the work efficiency is greatly improved.
[0017] The present invention provides a rotating structure, a reciprocating structure and a driving structure on the bottom plate. The rotating structure can drive the extruded part to rotate during the extrusion molding process, thereby preventing the inner tube from adhering to the extruded part during the molding process, which causes the inner tube to be damaged when the extruded part and the molded inner tube are separated. In addition, the reciprocating structure and the driving structure can drive the rotating structure to move toward and away from the connecting column during the movement of the moving seat, so that when the extruded part and the expansion part are moved out of the position of the rotating structure, the rotating structure moves toward the direction close to the connecting column, thereby preventing the rotating structure from interfering with the normal movement of the extruded part or the expansion part.
[0018] The present invention provides a limiting structure on the support plate and an extrusion structure on the movable seat, so that when the movable seat moves toward the support plate for compression molding, it can automatically drive the limiting bar on the limiting structure to rotate and limit to the outer steel pipe, and limit the steel-lined fluorine pipe as a whole on the support plate, thereby avoiding the problem of the steel-lined fluorine pipe falling on the support plate during the compression molding process. BRIEF DESCRIPTION OF THE DRAWINGS
[0019] Figure 1 It is a structural schematic diagram of a compression mold for a steel-lined fluorine pipe in an embodiment of the present invention;
[0020] Figure 2 is a schematic diagram of the structure of the moving structure, the switching structure and the rotating structure in an embodiment of the present invention;
[0021] Figure 3 In the embodiment of the present invention Figure 2 A magnified view of the structure at A;
[0022] Figure 4 It is a schematic diagram of the structure of the switching seat in an embodiment of the present invention;
[0023] Figure 5 It is a structural view of the rotating structure in an embodiment of the present invention;
[0024] Figure 6 is a schematic structural diagram of a support plate in an embodiment of the present invention;
[0025] Figure 7 In the embodiment of the present invention Figure 6 A magnified view of the structure at B;
[0026] Figure 8 It is a schematic diagram of the structure in the inner groove of the support plate in an embodiment of the present invention.
[0027] Description of reference numerals: 1, bottom plate; 2, support plate; 3, outer steel pipe; 4, inner pipe; 5, moving seat; 6, switching column; 7, connecting column; 8, expansion member; 9, extrusion member; 10, switching seat; 11, lifting cylinder; 12, guide rod; 13, first insertion rod; 14, vertical groove; 15, first inclined groove; 16, second inclined groove; 17, through rod; 18, first vertical plate; 19, first guide groove; 20, mounting plate; 21, hydraulic cylinder; 22, horizontal groove; 23. Crossbar; 24. Second vertical plate; 25. Arc plate; 26. Straight groove; 27. Arc groove; 28. Second plug rod; 29. Driving plate; 30. Vertical groove; 31. Vertical rod; 32. L-shaped rod; 33. Second guide groove; 34. Support groove; 35. Inner groove; 36. Rotating shaft; 37. Gear; 38. Limiting strip; 39. Driving strip; 40. Spring; 41. Extrusion block; 42. Vertical bar; 43. Fixed plate; 44. Opening; 45. Extrusion wheel. DETAILED DESCRIPTION
[0028] The following is combined with Figure 1-Figure 8 The present invention is described in further detail.
[0029] The embodiment of the present invention discloses a compression molding mold for a steel-lined fluorine pipe, comprising a bottom plate 1, a support plate 2, an outer steel pipe 3 and an inner pipe 4. Two support plates 2 are connected to the bottom plate 1 near the left side. A support groove 34 is provided at the top of each support plate 2. The outer steel pipe 3 is supported in the support groove 34. A limiting edge is provided at the edge of the groove wall of the support groove 34. The limiting edge is attached to the edge of the end face of the outer steel pipe 3. The limiting edge on the support plate 2 limits the two ends of the steel-lined fluorine pipe, and the limiting edge is attached to the edge of the outer steel pipe 3 without hindering the compression molding of the inner pipe 4 at the end of the outer steel pipe 3. A limiting structure is provided on the right support plate 2, and a movable structure is provided on the right side of the bottom plate 1. A moving seat 5 is provided with a switching column 6 through a switching structure, a connecting column 7 is rotated and passed through the top of the switching column 6, an expansion piece 8 is installed on one end of the connecting column 7, one end of the expansion piece 8 is in a cone shape, an extrusion piece 9 is installed on the other end of the connecting column 7, and a second plug rod 28 is connected to the connecting column 7 near the extrusion piece 9. A rotating structure is provided at the front side of the bottom plate 1, and the expansion piece 8 and the extrusion piece 9 are driven to move back and forth on the bottom plate 1 as a whole through the moving structure to perform compression molding, and the switching column 6 can be automatically rotated by using the switching structure, so as to flexibly switch the expansion piece 8 and the extrusion piece 9 to perform compression molding on the steel lined fluorine pipe, which is more labor-saving and convenient to operate, thereby improving work efficiency.
[0030] See also Figure 1-Figure 4The switching structure includes a switching seat 10 rotatably connected to the middle of the moving seat 5, the bottom end of the switching column 6 is welded to the switching seat 10, a lifting cylinder 11 is movably sleeved on the switching seat 10, and a guide rod 12 is movably passed through the edge of the lifting cylinder 11, and the bottom end of the guide rod 12 is connected to the moving seat 5. The guide rod 12 is in a "T" shape, which limits the up and down movement of the lifting cylinder 11 on the moving seat 5. A first plug rod 13 is fixedly inserted into the top end of the side of the lifting cylinder 11. A plurality of vertical slots 14 are provided at the lower part of the side of the switching seat 10, a second inclined slot 16 connecting the right side of the top of the vertical slot 14 is provided on the switching seat 10, and a first inclined slot 1 connecting the left side of the top of the vertical slot 14 is provided on the switching seat 10. 5, the two adjacent first inclined grooves 15 and the second inclined grooves 16 are connected to each other, one end of the first insertion rod 13 is movably inserted into the second inclined groove 16, a through rod 17 is connected to the top of the side of the lifting cylinder 11, and a first vertical plate 18 is connected to the position near the through rod 17 on the bottom plate 1, and a first guide groove 19 is provided on the first vertical plate 18. The first guide groove 19 is in an "S" shape, and one end of the through rod 17 movably passes through the first guide groove 19. When the moving seat 5 moves on the cross bar 23 toward the side close to the support plate 2, driving the expansion member 8 to expand the end of the hose, the moving seat 5 drives the through rod 17 to slide in the first guide groove 19 on the first vertical plate 18, thereby driving the lifting cylinder 11 to switch the seat 1 0 moves downward, thereby driving the first plug rod 13 to move downward from the upper end in the second inclined slot 16, the first plug rod 13 moves downward to squeeze the lower slot wall of the first inclined slot 15, and then slides into the vertical slot 14, pushing the switching column 6, the switching seat 10, the connecting column 7, the expansion piece 8 and the extrusion piece 9 to rotate ninety degrees as a whole, thereby driving the expansion piece 8 to rotate to the position closest to the support plate 2, so that the continued movement of the moving seat 5 can drive the expansion piece 8 to be inserted into the end of the hose to squeeze and expand the hose, and then the moving seat 5 moves in the opposite direction, driving the penetration rod 17 to move in the direction away from the support plate 2, so as to drive the lifting cylinder 11 to move upward on the switching seat 10, and drive the end of the first plug rod 13 to slide out of the vertical slot 14, The lifting cylinder 11 continues to move upward, driving the end of the first plug rod 13 to be squeezed onto the upper groove wall of the second inclined groove 16, driving the switching column 6 and the connecting column 7 to rotate 90 degrees as a whole, and the connecting column 7 rotates to the longitudinal direction, and then the moving seat 5 continues to move toward the side close to the support plate 2, using the through rod 17 to move in the first guide groove 19 in the direction close to the support plate 2, and the lifting cylinder 11 is used to move downward on the switching seat 10 to drive the end of the first plug rod 13 to slide downward in the first inclined groove 15, and then continue to drive the switching column 6 to rotate 90 degrees, so that the switchable extrusion piece 9 can be rotated to the position closest to the support plate 2, and as the moving seat 5 continues to move, it drives the extrusion piece 9 to perform compression molding on the end of the steel-lined fluorine pipe;
[0031] The moving structure includes a mounting plate 20 connected to the right side of the base plate 1 near the moving seat 5, a hydraulic cylinder 21 is installed on the mounting plate 20, one end of the output shaft of the hydraulic cylinder 21 is connected to the moving seat 5, a transverse groove 22 for the moving seat 5 to be inserted is provided on the base plate 1, a transverse bar 23 is connected between the groove walls at both ends of the transverse groove 22, and a through hole is provided on the moving seat 5 for the transverse bar 23 to move through. During compression molding, the hydraulic cylinder 21 on the mounting plate 20 is started to drive the moving seat 5 to automatically move back and forth on the transverse bar 23.
[0032] See also Figure 1 , Figure 2 , Figure 3 and Figure 5 The rotating structure includes a second vertical plate 24 arranged at the front side of the bottom plate 1, the bottom end of the second vertical plate 24 is arranged on the bottom plate 1 through a reciprocating structure, an arc plate 25 is installed on the top end of the second vertical plate 24, a straight groove 26 is opened on the inner wall of the arc plate 25 at a position away from the support plate 2, and an arc groove 27 connected to one end of the straight groove 26 is opened on the inner wall of the arc plate 25;
[0033] The reciprocating structure includes a driving plate 29 installed on the bottom end of the second vertical plate 24. A longitudinal groove 30 is opened on both sides of the bottom plate 1 below the driving plate 29. A longitudinal rod 31 is connected between the groove walls at the front and rear ends of the longitudinal groove 30. The driving plate 29 is movably mounted on the two longitudinal rods 31. A driving structure is provided between the driving plate 29 and the moving seat 5. The moving seat 5 moves on the cross bar 23. When the moving seat 5 drives the extrusion member 9 or the expansion member 8 to move out of the position of the second vertical plate 24, the driving plate 29 can be pushed on the longitudinal rod 31 in the longitudinal groove 30 to approach the cross bar. 23 moves on one side, and as the moving seat 5 continues to move, the second plug rod 28 on the connecting column 7 can be driven to slide from the straight groove 26 of the arc plate 25 to the arc groove 27. The sliding of the second plug rod 28 in the arc groove 27 can drive the connecting column 7, the expansion member 8 and the extrusion member 9 to rotate as a whole, so that during the compression molding process, the softened inner tube 4 can be reduced from adhering to the extrusion member 9, resulting in the problem that part of the inner tube 4 is adhered to the extrusion member 9 when the extrusion member 9 and the formed steel lined fluorine tube are separated, resulting in damage to the inner tube 4, thereby improving the compression molding quality;
[0034] The driving structure includes a second guide groove 33 provided on the driving plate 29, and an L-shaped rod 32 is connected in the middle of the front and rear surfaces of the moving seat 5, and one end of the L-shaped rod 32 is movably inserted into the second guide groove 33. When the moving seat 5 moves, it drives one end of the L-shaped rod 32 to slide in the second guide groove 33, thereby automatically driving the second vertical plate 24 and the arc-shaped plate 25 to move back and forth as a whole on the bottom plate 1.
[0035] See also Figure 1 , Figure 2 , Figure 3 , Figure 6 , Figure 7 and Figure 8 The limiting structure includes an inner groove 35 provided at the front and rear sides of the support plate 2, and a rotating shaft 36 is rotatably connected at the top of the inner wall on both sides of the inner groove 35, a gear 37 is fixedly sleeved on the rotating shaft 36, and a limiting strip 38 is fixedly sleeved on one end of the rotating shaft 36, and a vertical bar 42 is movably inserted into the inner groove 35, and a driving strip 39 is connected to the top of the vertical bar 42, and the driving strip 39 is provided with teeth meshing with the gear 37, and a spring 40 is connected between the bottom end of the vertical bar 42 and the bottom end groove wall of the inner groove 35, and an extrusion block 41 passing through the inner groove 35 is connected to the bottom end of the vertical bar 42, and the bottom of the extrusion block 41 is inclined, and an extrusion structure is provided on the movable seat 5;
[0036] The extrusion structure includes a fixed plate 43 connected to the left edge of the front side of the moving seat 5, and an opening 44 is opened on the fixed plate 43. An extrusion wheel 45 is arranged in the opening 44. When the moving seat 5 moves to a position close to the support plate 2, the moving seat 5 drives the extrusion wheel 45 to roll on the lower inclined surface of the extrusion block 41, pushing the vertical bar 42 to move upward in the inner groove 35, and driving the limit bar 38 on the rotating shaft 36 to rotate to the steel-lined fluorine tube through the driving bar 39 and the gear 37, and continuing to limit the steel-lined fluorine tube on the support plate 2 to avoid the problem of the steel-lined fluorine tube falling on the support plate 2 during the compression molding process, so that the compression molding work is smoother.
[0037] The implementation principle of a compression mold for a steel-lined fluorine pipe according to an embodiment of the present invention is as follows: an outer steel pipe 3 of the steel-lined fluorine pipe to be compression molded is placed in two support grooves 34 at the top of the support plate 2, and the end of the outer steel pipe 3 is fitted on the limit edge in the support groove 34, and the end of the inner pipe 4 passes through the support plate 2. At this time, the end of the inner pipe 4 is subjected to a heat treatment by a heating structure. After the end of the inner pipe 4 is softened, the hydraulic cylinder 21 on the mounting plate 20 is started to drive the moving seat 5 to move toward the direction close to the support plate 2. The moving seat 5 drives the through rod 17 to slide in the first guide groove 19 of the first vertical plate 18, and drives the lifting cylinder 11 to move downward on the switching seat 10, thereby driving the lifting cylinder 11 to move downward on the switching seat 10, and then driving the first insertion rod 13 from The upper end of the second inclined slot 16 moves downward, the first plug rod 13 moves downward to squeeze the lower slot wall of the first inclined slot 15, and then slides into the vertical slot 14, pushing the switching column 6, the switching seat 10, the connecting column 7, the expansion piece 8 and the extrusion piece 9 to rotate 90 degrees as a whole, and the connecting column 7 rotates from the longitudinal direction to the transverse position, thereby driving the expansion piece 8 to rotate to the position closest to the support plate 2, and then the moving seat 5 continues to move, which can drive the expansion piece 8 to be inserted into the end of the hose to squeeze and expand the hose, and then the moving seat 5 moves in the opposite direction, driving the through rod 17 to move in the direction away from the support plate 2, so as to drive the lifting cylinder 11 to move upward on the switching seat 10, and drive the end of the first plug rod 13 to slide out of the vertical slot 14, and the lifting cylinder 11 continues to move upward, driving the first The end of the insertion rod 13 is squeezed onto the upper groove wall of the second inclined groove 16, driving the switching column 6 and the connecting column 7 to rotate 90 degrees as a whole, and the connecting column 7 rotates to the longitudinal direction, and then the moving seat 5 continues to move toward the side close to the support plate 2, and uses the through rod 17 to move in the first guide groove 19 in the direction close to the support plate 2, and uses the lifting cylinder 11 to move downward on the switching seat 10 to drive the end of the first insertion rod 13 to slide downward in the first inclined groove 15, and then continue to drive the switching column 6 to rotate 90 degrees, so that the switchable extrusion piece 9 can be rotated to the position closest to the support plate 2, and then the moving seat 5 continues to move. When the expansion piece 8 at one end of the connecting column 7 moves away from the position of the second vertical plate 24, the sliding of one end of the L-shaped rod 32 in the second guide groove 33 is used. The driving plate 29 and the second vertical plate 24 are pulled to move as a whole toward a position close to the cross bar 23, so that the second plug rod 28 on the connecting column 7 slides from the straight groove 26 on the arc plate 25 to the arc groove 27, and drives the extrusion piece 9 to perform compression molding on the expanded inner tube 4. During the compression molding process, the sliding of the end of the second plug rod 28 in the arc groove 27 drives the extrusion piece 9 to rotate with the connecting column 7 as the axis, which can reduce the softened inner tube 4 from adhering to the extrusion piece 9, thereby avoiding the position where the inner tube 4 is damaged when the extrusion piece 9 is separated from the inner tube 4. At the same time, during the extrusion molding process of the extrusion piece 9, the moving seat 5 drives the extrusion wheel 45 to roll on the lower inclined surface of the extrusion block 41, pushing the vertical bar 42 to move upward in the inner groove 35.The limit bar 38 on the rotating shaft 36 is driven by the driving bar 39 and the gear 37 to rotate to the steel lined fluorine tube, and the steel lined fluorine tube is further limited on the support plate 2 to avoid the problem of the steel lined fluorine tube falling on the support plate 2 during the compression molding process, making the compression molding work smoother. Finally, the hydraulic cylinder 21 drives the moving seat 5 to move in the opposite direction and reset, and the compression molding work can be completed.
[0038] The above are all preferred embodiments of the present invention, and are not intended to limit the protection scope of the present invention. Therefore, any equivalent changes made based on the structure, shape, and principle of the present invention should be included in the protection scope of the present invention.
Claims
1. A compression mold for a steel-lined fluorine tube, comprising a base plate (1), a support plate (2), an outer steel tube (3) and an inner tube (4), characterized in that: Two support plates (2) are connected to the bottom plate (1) at a position near the left side, and a support groove (34) is provided at the top of each support plate (2). The outer steel pipe (3) is supported in the support groove (34). A limit edge is provided at the edge of the groove wall of the support groove (34), and the limit edge is in contact with the edge of the end face of the outer steel pipe (3). A limit structure is provided on the right support plate (2). A movable seat (5) is provided at the right side of the bottom plate (1) through a movable structure, and a switching column (6) is provided on the movable seat (5) through a switching structure. A connecting column (7) is rotatably passed through the top of the switching column (6), and an expansion piece (8) is installed on one end of the connecting column (7), and one end of the expansion piece (8) is in a cone shape. An extrusion piece (9) is installed on the other end of the connecting column (7). A second plug rod (28) is connected to the connecting column (7) at a position near the extrusion piece (9). A rotating structure is provided at the front side of the bottom plate (1). The switching structure comprises a switching seat (10) rotatably connected to the middle of the upper portion of the moving seat (5), the bottom end of the switching column (6) being welded to the switching seat (10), a lifting cylinder (11) being movably sleeved on the switching seat (10), a guide rod (12) movably passing through the edge of the lifting cylinder (11), the bottom end of the guide rod (12) being connected to the moving seat (5), a first insertion rod (13) being fixedly inserted into the top end of the side of the lifting cylinder (11), a plurality of vertical grooves (14) being provided at the lower portion of the side of the switching seat (10), and a second inclined groove (16) being connected to the right side of the top end of the vertical groove (14) being provided on the switching seat (10), The switching seat (10) is provided with a first inclined slot (15) on the left side of the top end of the connecting vertical slot (14), and two adjacent first inclined slots (15) are connected to each other with the second inclined slot (16), one end of the first insertion rod (13) is movably inserted into the second inclined slot (16), a through rod (17) is connected to the top end of the side of the lifting cylinder (11), a first vertical plate (18) is connected to the position of the bottom plate (1) near the through rod (17), a first guide slot (19) is provided on the first vertical plate (18), the first guide slot (19) is in an "S" shape, and one end of the through rod (17) movably passes through the first guide slot (19); The rotating structure comprises a second vertical plate (24) arranged at a front position on the bottom plate (1), the bottom end of the second vertical plate (24) being arranged on the bottom plate (1) via a reciprocating structure, an arc-shaped plate (25) being mounted on the top end of the second vertical plate (24), a straight groove (26) being provided on the inner wall of the arc-shaped plate (25) at a position away from the support plate (2), and an arc-shaped groove (27) communicating with one end of the straight groove (26) being provided on the inner wall of the arc-shaped plate (25); The reciprocating structure comprises a driving plate (29) mounted on the bottom end of the second vertical plate (24); longitudinal grooves (30) are provided on both sides of the bottom plate (1) below the driving plate (29); longitudinal rods (31) are connected between the groove walls at the front and rear ends of the longitudinal groove (30); the driving plate (29) is movably sleeved on the two longitudinal rods (31); and a driving structure is provided between the driving plate (29) and the movable seat (5); The driving structure comprises a second guide groove (33) formed on the driving plate (29); an L-shaped rod (32) is connected to the middle of the front and rear surfaces of the movable seat (5); one end of the L-shaped rod (32) is movably inserted into the second guide groove (33); The limiting structure comprises an inner groove (35) provided at the front and rear sides of the support plate (2); the top ends of the inner walls of the inner groove (35) are rotatably connected with a rotating shaft (36); a gear (37) is fixedly sleeved on the rotating shaft (36); a limiting strip (38) is fixedly sleeved on one end of the rotating shaft (36); a vertical strip (42) is movably inserted into the inner groove (35); a driving strip (39) is connected to the top end of the vertical strip (42); the driving strip (39) is provided with teeth meshing with the gear (37); a spring (40) is connected between the bottom end of the vertical strip (42) and the bottom end groove wall of the inner groove (35); an extrusion block (41) penetrating the inner groove (35) is connected to the bottom end of the vertical strip (42); the bottom of the extrusion block (41) is inclined; and an extrusion structure is provided on the movable seat (5).
2. A compression mold for a steel-lined fluorine pipe according to claim 1, characterized in that: The movable structure comprises a mounting plate (20) connected to the right side of the bottom plate (1) near the movable seat (5), a hydraulic cylinder (21) being mounted on the mounting plate (20), one end of the output shaft of the hydraulic cylinder (21) being connected to the movable seat (5), a transverse groove (22) for the movable seat (5) to be inserted into being provided on the bottom plate (1), a transverse rod (23) being connected between the groove walls at both ends of the transverse groove (22), and a through hole for the transverse rod (23) to movably pass through being provided on the movable seat (5).
3. A compression mold for a steel-lined fluorine pipe according to claim 1, characterized in that: The extrusion structure comprises a fixing plate (43) connected to the left edge of the front face of the moving seat (5), an opening (44) is provided on the fixing plate (43), and an extrusion wheel (45) is arranged in the opening (44).