Copper pipe bulging device

Abstract

The utility model discloses a copper pipe bulging device which comprises a dismounting mechanism and a rotary clamping mechanism. The upper mold is movably arranged in the lifting seat, the dismounting mechanism comprises threaded rods, the threaded rods are arranged on the two sides of the lifting seat through threaded holes, clamping blocks are arranged on the opposite sides of the two threaded rods, and clamping grooves matched with the clamping blocks are formed in the outer surface of the upper mold; the lower mold is movably arranged in the base, a bottom plate is further arranged in the base and located below the lower mold, the rotary clamping mechanism comprises two rotary rods, the bottom ends of the rotary rods are connected with the bottom plate through transmission rods, the upper end faces of the rotary rods are fixedly connected with limiting blocks, and limiting grooves are formed in the two sides of the outer surface of the lower mold. Arc-shaped grooves are formed in the two sides of the front end face of the base, movable rods are movably arranged on the inner sides of the arc-shaped grooves, and the limiting blocks are connected with the movable rods. According to the bulging device, the upper die and the lower die can be disassembled and assembled conveniently and replaced conveniently, and copper pipes of different sizes can be bulged.

Description

Technical Field

[0001] The utility model relates to the technical field of copper tube expansion, in particular to a copper tube expansion device. Background Art

[0002] Copper tube is also called red copper tube. It is a kind of non-ferrous metal tube, which is a pressed and drawn seamless tube. During the production process of copper tube, a bulging machine is needed to bulge the copper tube. Bulging is a stamping forming process in which a high-pressure liquid or gas is passed through one side of the tube blank or a rigid flap mold is placed inside to force the tube to plastically deform to form a workpiece. The bulging machine is a forming device that relies on the stretching of the material to expand the copper tube with a smaller diameter radially outward under the action of pressure.

[0003] Among them, the prior art patent number CN217889202U discloses a pipe bulging machine that is easy to take out materials. By setting a pneumatic telescopic rod, a material ejecting frame, a material ejecting block, a sealing gasket, a material taking trough and a reserved groove, after the bulging process is completed, the pneumatic telescopic rod is started to make the material ejecting frame rise steadily and drive the material ejecting block to rise, and then the formed pipe is ejected out of the lower mold, so that the staff has more space to take out the formed pipe, improve its material taking rate, and avoid the inconvenience of taking out materials caused by the small space inside the lower mold in the traditional way. At the same time, a sealing gasket is set, so that after the material ejecting block descends and returns to its original position, the material taking trough can be sealed.

[0004] However, when the above device is used, it is inconvenient to replace the upper mold and the lower mold, and the applicability is not high; therefore, it does not meet the existing needs. In this regard, we propose a copper tube bulging device. Utility Model Content

[0005] The utility model aims to provide a copper tube bulging device to solve the problems that the upper mold and the lower mold are inconvenient to replace and the applicability is not high when the device is used.

[0006] In order to achieve the above purpose, the utility model provides the following technical solutions:

[0007] A copper tube bulging device comprises a base, a lower die arranged on the base, and an upper die arranged opposite to the lower die, and also comprises a disassembly mechanism and a rotation clamping mechanism;

[0008] The upper mold is movably arranged in the lifting seat, the disassembly mechanism includes a threaded rod, the threaded rod is arranged on both sides of the lifting seat through a threaded hole, a clamping block is arranged on the opposite side of the two threaded rods, and a clamping groove adapted to the clamping block is arranged on the outer surface of the upper mold;

[0009] The lower mold is movably arranged in the base, and a bottom plate is also arranged in the base below the lower mold. The rotating clamping mechanism includes two rotating rods, the bottom ends of the rotating rods are connected to the bottom plate through transmission rods, and the upper end faces of the rotating rods are fixedly connected to limiting blocks. Limiting grooves are arranged on both sides of the outer surface of the lower mold, and arc grooves are arranged on both sides of the front end face of the base. A movable rod is movably arranged on the inner side of the arc groove, and the limit block is connected to the movable rod.

[0010] Further: the bottom surface of the bottom plate is connected to the base through a spring;

[0011] A pad is fixed inside the base; when the mold is closed, the bottom plate is in contact with the pad.

[0012] Furthermore: four end corners of the upper end surface of the base are all installed with vertical rods, the upper end surface of the vertical rods is fixedly installed with a top plate, the upper end surface of the top plate is installed with a hydraulic rod, and the lifting seat is fixed to the lower end surface of the hydraulic rod.

[0013] Furthermore, the four end corners of the upper end surface of the lifting seat are all provided with round holes, and the vertical rod passes through the round holes.

[0014] A square groove is arranged in the middle of the upper end surface of the base, the lower mold is arranged in the square groove, movable cavities are arranged on both sides of the square groove, and the rotating rod is rotatably connected to the movable cavity through a rotating shaft A at a position close to the transmission rod.

[0015] Furthermore: a liquid injection tube is fixedly installed on one side of the lower end surface of the upper mold through a semicircular groove A, a semicircular groove B is provided on one side of the upper end surface of the lower mold, and a rubber pad is installed on the upper end surface of the circular groove B.

[0016] Furthermore: both ends of the transmission rod are rotatably connected to the rotating rod and the bottom plate via a rotating shaft B, and the limiting block is adapted to the limiting groove.

[0017] Furthermore: the threaded rod is screwed into the threaded hole, the clamping block is matched with the clamping slot, the size of the clamping block is smaller than the size of the receiving slot, and the threaded rod is rotatably connected to the outer surface of the clamping block through a bearing.

[0018] Furthermore: the upper end surface and the lower end surface of the movable rod are both installed with sliding blocks, the upper end surface and the lower end surface of the inner wall of the arc groove are both provided with sliding grooves, and the sliding blocks are stuck in the inner side of the sliding grooves.

[0019] Furthermore: the four end corners of the lower end face of the upper mold are installed with positioning columns, the four end corners of the upper end face of the lower mold are provided with positioning holes, the positioning columns are adapted to the positioning holes, a drain pipe is installed above the rear end face of the lower mold, and the rear end face of the drain pipe is connected to a sealing cover through threads.

[0020] Furthermore: the movable direction of the upper mold in the lifting seat is the height direction, and the movable direction of the lower mold in the base is the height direction.

[0021] Compared with the prior art, the beneficial effects of the utility model are:

[0022] By rotating the threaded rod in the disassembly mechanism to disengage the clamping block from the clamping slot, the limit on the upper mold can be released, and the upper mold can be conveniently disassembled. By operating the movable rod to drive the limit block to disengage from the limit slot, the limit on the lower mold can be released, and the lower mold can be conveniently disassembled. The present application facilitates the disassembly and assembly of the upper and lower molds, and facilitates their replacement. It can be used to expand copper tubes of different sizes, thereby improving applicability. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] Figure 1 It is a schematic diagram of the overall structure of the utility model;

[0024] Figure 2 It is a main cross-sectional view of the utility model as a whole;

[0025] Figure 3 It is a partial structural schematic diagram of the disassembly mechanism of the utility model;

[0026] Figure 4 It is a partial structural schematic diagram of the rotary clamping mechanism of the utility model.

[0027] In the figure: 1. base; 2. vertical rod; 3. injection pipe; 4. disassembly mechanism; 401. threaded rod; 402. threaded hole; 403. storage slot; 404. clamping block; 405. clamping slot; 5. lifting seat; 6. top plate; 7. hydraulic rod; 8. upper mold; 9. lower mold; 10. square slot; 11. arc slot; 12. movable rod; 13. movable cavity; 14. rotating clamping mechanism; 1401. rotating rod; 1402. limit block; 1403. limit slot; 1404. transmission rod; 15. spring; 16. bottom plate; 17. groove; 18. installation slot; 19. pad. DETAILED DESCRIPTION

[0028] The technical solutions in the embodiments of the present invention will be described clearly and completely below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than all of the embodiments.

[0029] In one embodiment of the present application, a copper tube bulging device includes a base 1, a lower mold 9 arranged on the base 1, and an upper mold 8 arranged opposite to the lower mold 9, and also includes a disassembly mechanism 4 and a rotating clamping mechanism 14; the upper mold 8 is movably arranged in the lifting seat 5, the disassembly mechanism 4 includes a threaded rod 401, the threaded rod 401 is arranged on both sides of the lifting seat 5 through a threaded hole 402, a clamping block 404 is arranged on the opposite side of the two threaded rods 401, and the outer surface of the upper mold 8 is provided with a clamping groove 405 adapted to the clamping block 404; the lower mold The tool 9 is movably arranged in the base 1, and a bottom plate 16 is also arranged in the base 1 below the lower mold 9. The rotating clamping mechanism 14 includes two rotating rods 1401. The bottom ends of the rotating rods 1401 are connected to the bottom plate 16 through transmission rods 1404. The upper end faces of the rotating rods 1401 are fixedly connected to limiting blocks 1402. Limiting grooves 1403 are arranged on both sides of the outer surface of the lower mold 9. Arc grooves 11 are arranged on both sides of the front end face of the base 1. A movable rod 12 is movably arranged on the inner side of the arc groove 11, and the limiting block 1402 is connected to the movable rod 12.

[0030] In the present application, the lower mold 9 and the upper mold 8 can only move in one direction, that is, the up and down direction shown in the figure. When the lower mold 9 and the upper mold 8 are limited, they cannot move and can be smoothly closed to ensure the expansion of the copper tube. After the lower mold 9 and the upper mold 8 are limited, the lower mold 9 and the upper mold 8 can be removed to replace the lower mold 9 and / or the upper mold 8. By replacing the lower mold 9 and / or the upper mold 8, copper tubes of different sizes can be expanded. It is also convenient to repair and replace the damaged lower mold 9 and / or the upper mold 8.

[0031] In the present application, the bottom surface of the bottom plate 16 is connected to the base 1 through the spring 15; a pad 19 is fixed inside the base 1; when the mold is closed, the bottom plate 16 and the pad 19 are in contact. This design can ensure the support effect of the pad 19 on the bottom plate 16, and prevent the bottom plate 16 from floating up and down when the mold is in place.

[0032] When in use, by rotating the threaded rod 401 in the disassembly mechanism 4, the block 404 is disengaged from the slot 405, the limit on the upper mold 8 can be released, and the upper mold 8 can be conveniently disassembled. By operating the movable rod 12 to drive the limit block 1402 to disengage from the limit slot 1403, the limit on the lower mold 9 can be released, and the lower mold 9 can be conveniently disassembled. The present application facilitates the disassembly and assembly of the upper and lower molds, and facilitates their replacement. It can be used to expand copper tubes of different sizes, thereby improving applicability.

[0033] The present application is described below by means of a specific embodiment.

[0034] See also Figures 1 to 4The utility model provides an embodiment: a copper tube bulging device, including a base 1, a square groove 10 is arranged in the middle of the upper end surface of the base 1, a groove 17 is arranged on the bottom surface of the square groove 10, a bottom plate 16 is installed inside the groove 17 through a plurality of springs 15, a lower mold 9 is movably arranged above the bottom plate 16 through a rotating clamping mechanism 14, the rotating clamping mechanism 14 includes two rotating rods 1401, the bottom end of the rotating rod 1401 is connected to the outer side of the bottom plate 16 through a transmission rod 1404, the upper end surface of the rotating rod 1401 is fixedly connected to a limited block 1402, limited grooves 1403 are arranged below the outer surfaces of the lower mold 9 on both sides, and four The end corners are all installed with vertical rods 2, the upper end surface of the vertical rods 2 is fixedly installed with a top plate 6, the upper end surface of the top plate 6 is installed with a hydraulic rod 7, the lower end surface of the hydraulic rod 7 is fixedly connected with a lifting seat 5, the lower end surface of the lifting seat 5 is provided with a mounting groove 18, the inner side of the mounting groove 18 is movably provided with an upper mold 8 through a disassembly mechanism 4, the disassembly mechanism 4 includes a threaded rod 401, the threaded rod 401 is arranged on both sides of the lifting seat 5 through a threaded hole 402, a clamping block 404 is arranged on the opposite side of the two threaded rods 401, and clamping grooves 405 are arranged above both sides of the outer surface of the upper mold 8, arc grooves 11 are arranged on both sides of the front end surface of the base 1, and a movable rod 12 is movably arranged on the inner side of the arc groove 11.

[0035] A liquid injection tube 3 is fixedly mounted on one side of the lower end surface of the upper mold 8 through a semicircular groove A. A semicircular groove B is provided on one side of the upper end surface of the lower mold 9. A rubber pad is installed on the upper end surface of the semicircular groove B.

[0036] By adopting the above technical solution, when the upper mold 8 contacts the lower mold 9, the lower end surface of the injection tube 3 contacts the semicircular groove B, and the sealing performance of the connection between the injection tube 3 and the lower mold 9 is improved by providing a rubber pad.

[0037] The four end corners of the upper end face of the lifting seat 5 are all provided with circular holes, and the vertical rod 2 passes through the circular holes. Active cavities 13 are provided on both sides of the square groove 10. The rotating rod 1401 is rotatably connected to the active cavity 13 through the rotating shaft A near the transmission rod 1404, thereby improving the stability of the lifting seat 5 moving up and down and improving the stability of the rotation of the rotating rod 1401.

[0038] Both ends of the transmission rod 1404 are rotatably connected to the rotating rod 1401 and the bottom plate 16 via the rotating shaft B. The limit block 1402 is matched with the limit groove 1403 , and the front end surface of the limit block 1402 is fixedly connected to the rear end surface of the movable rod 12 .

[0039] By adopting the above technical solution, the limiting block 1402 can be inserted into the inner side of the limiting groove 1403, and the limiting block 1402 can be driven to move by moving the movable rod 12.

[0040] The threaded rod 401 is screwed into the threaded hole 402 , the clamping block 404 is matched with the clamping slot 405 , the size of the clamping block 404 is smaller than the size of the receiving slot 403 , and the outer surfaces of the threaded rod 401 and the clamping block 404 are rotatably connected via a bearing.

[0041] By adopting the above technical solution, the threaded rod 401 can move left and right inside the threaded hole 402, driving the block 404 to move, and the block 404 can be inserted into the inner side of the slot 405, and the block 404 can be retracted into the inner side of the storage slot 403.

[0042] The upper and lower end surfaces of the movable rod 12 are both equipped with sliders, the upper and lower end surfaces of the inner wall of the arc groove 11 are both provided with slide grooves, and the sliders are inserted into the inner side of the slide grooves to improve the stability of the movement of the movable rod 12.

[0043] The four end corners of the lower end face of the upper mold 8 are all equipped with positioning columns, and the four end corners of the upper end face of the lower mold 9 are all provided with positioning holes, the positioning columns are adapted to the positioning holes, and a drain pipe is installed above the rear end face of the lower mold 9, and the rear end face of the drain pipe is connected to a sealing cover through threads.

[0044] By adopting the above technical solution, the tightness and accuracy of the mold closing between the upper mold 8 and the lower mold 9 are improved, and the sealing cover can be unscrewed to perform the liquid discharge operation.

[0045] The hydraulic rod 7 (model SJYG70-1000) mentioned in the utility model can be purchased from the market or obtained by private customization.

[0046] When the copper tube bulging device is in use, the upper mold 8 can be replaced by providing a disassembly mechanism 4, and the threaded rods 401 on both sides are rotated. The threaded rods 401 rotate and move outward on the inner side of the threaded hole 402, driving the clamping block 404 to move. The clamping block 404 leaves the inner side of the clamping groove 405 and is retracted into the inner side of the receiving groove 403, releasing the limit on the upper mold 8, and the upper mold 8 can be removed and replaced. By providing a rotating clamping mechanism 14 and a movable rod 12, when the lower mold 9 needs to be replaced, the movable rod 12 can be moved, and the movable rod 12 drives the limit block 1402 to move, and the limit block 1402 leaves the inner side of the limit groove 1403, releasing the limit. As for the limitation of the lower mold 9, the lower mold 9 is pushed upward under the action of the spring 15, and the user can remove the lower mold 9 from the inner side of the square groove 10. After replacing the new lower mold 9, the lower mold 9 is placed on the inner side of the square groove 10. The bottom plate 16 is pressed downward under the gravity of the lower mold 9, and the bottom plate 16 moves downward, driving the transmission rod 1404 to move downward, and the movable rod 12 is moved to drive the rotating rod 1401 to rotate, and the limit block 1402 rotates and snaps into the inner side of the limit groove 1403, and the lower mold 9 is installed. The utility model is convenient for disassembly and assembly of the upper mold 8 and the lower mold 9, and convenient for replacement, and can produce copper tubes of different sizes, thereby improving applicability.

[0047] It is obvious to those skilled in the art that the present invention is not limited to the details of the exemplary embodiments described above, and that the present invention can be implemented in other specific forms without departing from the spirit or essential features of the present invention. Therefore, the embodiments should be regarded as exemplary and non-limiting from any point of view, and the scope of the present invention is defined by the appended claims rather than the above description, and it is intended that all changes falling within the meaning and scope of the equivalent elements of the claims are included in the present invention. Any reference numeral in a claim should not be regarded as limiting the claim to which it relates.

Claims

1. A copper tube bulging device, comprising a base (1), a lower mold (9) arranged on the base (1), and an upper mold (8) arranged opposite to the lower mold (9), characterized in that: It also includes a disassembly mechanism (4) and a rotational clamping mechanism (14); The upper mold (8) is movably arranged in the lifting seat (5); the disassembly mechanism (4) comprises a threaded rod (401); the threaded rod (401) is arranged on both sides of the lifting seat (5) through a threaded hole (402); a clamping block (404) is arranged on the opposite side of the two threaded rods (401); and a clamping groove (405) adapted to the clamping block (404) is arranged on the outer surface of the upper mold (8); The lower mold (9) is movably arranged in the base (1); a bottom plate (16) is further arranged in the base (1) below the lower mold (9); the rotating clamping mechanism (14) comprises two rotating rods (1401); the bottom ends of the rotating rods (1401) are connected to the bottom plate (16) via transmission rods (1404); the upper end surfaces of the rotating rods (1401) are fixedly connected to limit blocks (1402); limit grooves (1403) are arranged on both sides of the outer surface of the lower mold (9); arc grooves (11) are arranged on both sides of the front end surface of the base (1); a movable rod (12) is movably arranged inside the arc groove (11); and the limit block (1402) is connected to the movable rod (12).

2. A copper tube bulging device according to claim 1, characterized in that: The bottom surface of the bottom plate (16) is connected to the base (1) via a spring (15); A backing plate (19) is fixed inside the base (1); when the mold is closed, the bottom plate (16) and the backing plate (19) are in contact.

3. A copper tube bulging device according to claim 1, characterized in that: The four end corners of the upper end surface of the base (1) are all mounted with vertical rods (2), the upper end surface of the vertical rods (2) is fixedly mounted with a top plate (6), the upper end surface of the top plate (6) is mounted with a hydraulic rod (7), and the lifting seat (5) is fixed to the lower end surface of the hydraulic rod (7).

4. A copper tube bulging device according to claim 3, characterized in that: The four end corners of the upper end surface of the lifting seat (5) are all provided with circular holes, and the vertical rod (2) passes through the circular holes. A square groove (10) is provided in the middle of the upper end surface of the base (1), the lower mold (9) is arranged in the square groove (10), and movable cavities (13) are provided on both sides of the square groove (10), and the position of the rotating rod (1401) close to the transmission rod (1404) is rotatably connected to the movable cavity (13) via a rotating shaft A.

5. A copper tube bulging device according to claim 1, characterized in that: A liquid injection tube (3) is fixedly mounted on one side of the lower end surface of the upper mold (8) via a semicircular groove A, and a semicircular groove B is provided on one side of the upper end surface of the lower mold (9), and a rubber pad is mounted on the upper end surface of the circular groove B.

6. A copper tube bulging device according to claim 1, characterized in that: Both ends of the transmission rod (1404) are rotatably connected to the rotating rod (1401) and the bottom plate (16) via a rotating shaft B, and the limiting block (1402) is adapted to the limiting groove (1403).

7. A copper tube bulging device according to claim 1, characterized in that: The upper end surface and the lower end surface of the movable rod (12) are both equipped with sliding blocks, the upper end surface and the lower end surface of the inner wall of the arc-shaped groove (11) are both equipped with sliding grooves, and the sliding blocks are inserted into the inner sides of the sliding grooves.

8. The copper tube bulging device according to claim 1, characterized in that: The four end corners of the lower end face of the upper mold (8) are all equipped with positioning columns, the four end corners of the upper end face of the lower mold (9) are all equipped with positioning holes, the positioning columns are matched with the positioning holes, a drainage pipe is installed above the rear end face of the lower mold (9), and the rear end face of the drainage pipe is connected to a sealing cover via a thread.

9. A copper tube bulging device according to claim 1, characterized in that: The moving direction of the upper mold (8) in the lifting seat (5) is the height direction, and the moving direction of the lower mold (9) in the base (1) is the height direction.

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