Hole flanging structure

Abstract

According to the technical scheme, the hole flanging structure is characterized in that the hole flanging structure comprises a lower die, the top of an ejector rod is fixedly connected with a floating block, the top of the lower die is fixedly connected with a female die, an upper die material pressing plate moves downwards through a first lifting mechanism, the upper die material pressing plate firstly makes contact with a product body and the female die for material pressing, and then the upper die material pressing plate makes contact with the female die; the upper surface of the lower floating block is designed to be a cambered surface, the middle of the lower floating block is high, the periphery of the lower floating block is low, and when a product body makes contact with the lower floating block, materials move towards the periphery, and the wall thickness of a flanged hole is increased. The arc face with the high middle and the low periphery is additionally arranged on the floating block to participate in forming, unused materials in the middle move towards the periphery to increase the wall thickness of hole flanging, the problems that the number of hole flanging process steps is large, and cracking occurs are solved, the floating block moves downwards, the ejector rod and the spring are arranged, and the spring can be compressed and expanded through the elasticity of the spring; and the floating block is jacked up through the jacking rod by means of expansion and bounce of the spring, and stripping of the product body is facilitated.

Description

Technical Field

[0001] The utility model relates to the technical field of hole-turning structures, in particular to a hole-turning structure. Background Art

[0002] Nowadays, with the fierce market competition, how to improve product yield and save mold manufacturing and maintenance costs is the top priority for enterprise production and development. Solving the problem of hole cracking and multiple hole-turning steps to improve product yield and reduce mold costs can achieve cost reduction and efficiency improvement, and increase market competitiveness.

[0003] The volume of the punched hole is larger than the volume of the material, and the punched hole will crack. The previous solution was to stretch the material first and then put it back. This method has many steps, complex structure, and poor stability. When unloading the finished product after processing, the product may be stuck. The staff needs to rely on tools to unload the material, which is troublesome and time-consuming. Utility Model Content

[0004] In view of the problems mentioned in the background technology, the purpose of the present invention is to provide a hole-turning structure to solve the problems mentioned in the background technology.

[0005] The above technical objectives of the utility model are achieved through the following technical solutions:

[0006] A hole-turning structure comprises a lower mold, a side of the lower mold is fixedly connected to a support plate, a bottom of the support plate is provided with a first lifting mechanism, an output end of the first lifting mechanism is transmission-connected to a mounting frame, an bottom of the mounting frame is fixedly connected to an upper mold pressing plate and a second driving mechanism, a first through slot is provided in the upper mold pressing plate, an output end of the second driving mechanism is transmission-connected to a punch, the punch is slidably connected in the first through slot, a second through slot is provided in the lower mold, a spring is fixedly connected in the second through slot, a push rod is fixedly connected to the top of the spring, a floating block is fixedly connected to the top of the push rod, a concave mold is fixedly connected to the top of the lower mold, a through hole is provided in the concave mold, and a product body is provided on the concave mold.

[0007] By adopting the above technical scheme, the upper mold pressing plate is moved downward by the first lifting mechanism, and the upper mold pressing plate first contacts the product body and the concave die to press the material, and the punch is moved downward by relying on the second driving mechanism. The lower floating block is designed with an arc surface, which is high in the middle and low around. When the product body contacts the lower floating block, the material moves around to increase the wall thickness of the hole. By adding an arc surface with a high middle and low around on the floating block to participate in the molding, the useless material in the middle moves around to increase the wall thickness of the hole, and solves the problem of multiple steps and cracking of the hole turning process. The floating block moves downward through the push rod and the spring. The elasticity of the spring can make the spring compressed and expanded. The floating block is lifted by the push rod by relying on the expansion of the spring, so that the product body can be easily removed.

[0008] Preferably, the first lifting mechanism includes a first servo electric cylinder and a first connecting rod, the first servo electric cylinder is fixedly mounted on the bottom of the support plate, the first connecting rod is transmission-connected to the output end of the first servo electric cylinder via a coupling, and the first connecting rod is fixedly connected to the mounting frame.

[0009] By adopting the above technical solution, the first servo electric cylinder drives the first connecting rod to be extended and retracted, so that the mounting frame can be raised and lowered.

[0010] Preferably, the second driving mechanism includes a second servo electric cylinder and a second connecting rod, the second servo electric cylinder is fixedly mounted on the bottom of the mounting frame, the second connecting rod is transmission-connected to the output end of the second servo electric cylinder via a coupling, and the second connecting rod is fixedly connected to the punch.

[0011] By adopting the above technical solution, the punch can be extended and retracted by driving the second connecting rod to be extended and retracted by the second servo electric cylinder.

[0012] Preferably, four first guide rods are fixedly connected to the bottom of the support plate, the bottoms of the four first guide rods are slidably connected to second guide rods, and the four second guide rods are fixedly connected to the upper mold pressing plate.

[0013] By adopting the above technical solution, the upper mold pressing plate can have a good guiding effect by slidingly connecting the four first guide rods to the bottom of the four second guide rods.

[0014] Preferably, a guide plate is fixedly connected to the outer side of the spring, four guide holes are opened on the guide plate, four guide rods are fixedly connected to the inside of the second through groove, and the four guide rods are respectively fixedly connected to the four guide holes.

[0015] By adopting the above technical solution, the four guide rods are slidably connected in the four guide holes, so that the compression and expansion of the spring can have a good guiding effect, and the service life of the spring can be improved.

[0016] Preferably, the upper mold pressing plate and the four edges of the lower mold are provided with rounded corners.

[0017] By adopting the above technical solution, the rounded corners can avoid the edges being too sharp and improve the overall structural strength.

[0018] Preferably, the top of the floating block is provided with a curved surface.

[0019] By adopting the above technical solution and setting the curved surface, useless materials can be easily pushed to the surroundings.

[0020] In summary, the utility model mainly has the following beneficial effects:

[0021] First, the utility model uses the first lifting mechanism to make the upper mold pressing plate move downward, the upper mold pressing plate first contacts the product body and the concave die to press the material, and relies on the second driving mechanism to make the punch downward, and the lower floating block is designed with an arc surface, which is high in the middle and low around. When the product body contacts the lower floating block, the material moves around to increase the wall thickness of the hole. By adding an arc surface with a high middle and low surroundings on the floating block to participate in the forming, the useless material in the middle moves around to increase the wall thickness of the hole, and solves the problem of multiple steps of hole turning and cracking.

[0022] Secondly, the utility model allows the floating block to move downward through the push rod and the spring. The elasticity of the spring can compress and expand the spring, and the floating block is lifted up by the push rod by the expansion of the spring, so that the product body can be easily removed. BRIEF DESCRIPTION OF THE DRAWINGS

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

[0024] Figure 2 This is one of the disassembly structure schematic diagrams of the utility model;

[0025] Figure 3 This is the second schematic diagram of the disassembled structure of the utility model;

[0026] Figure 4 yes Figure 3 A is an enlarged schematic diagram.

[0027] Figure numerals: 1. lower mold; 2. support plate; 3. first lifting mechanism; 301. first servo electric cylinder; 302. first connecting rod; 4. mounting frame; 5. upper mold pressing plate; 6. second driving mechanism; 601. second servo electric cylinder; 602. second connecting rod; 7. first through groove; 8. punch; 9. second through groove; 10. spring; 11. ejector rod; 12. float block; 13. die; 14. through hole; 15. product body; 16. first guide rod; 17. second guide rod; 18. guide plate; 19. guide hole; 20. guide rod; 21. fillet; 22. arc surface. DETAILED DESCRIPTION

[0028] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0029] Example 1

[0030] refer to Figure 1-4A hole-turning structure includes a lower mold 1, a support plate 2 is fixedly connected to the side of the lower mold 1, a first lifting mechanism 3 is arranged at the bottom of the support plate 2, the first lifting mechanism 3 includes a first servo electric cylinder 301 and a first connecting rod 302, the first servo electric cylinder 301 is fixedly installed at the bottom of the support plate 2, the first connecting rod 302 is connected to the output end of the first servo electric cylinder 301 through a coupling, the first connecting rod 302 is fixedly connected to the mounting frame 4, the first servo electric cylinder 301 drives the first connecting rod 302 to extend and retract, so that the mounting frame 4 can be lifted and lowered, and the output end of the first lifting mechanism 3 The mounting frame 4 is connected to the upper mold pressing plate 5 and the second driving mechanism 6 at the bottom of the mounting frame 4. The second driving mechanism 6 includes a second servo electric cylinder 601 and a second connecting rod 602. The second servo electric cylinder 601 is fixedly installed at the bottom of the mounting frame 4. The second connecting rod 602 is connected to the output end of the second servo electric cylinder 601 through a coupling. The second connecting rod 602 is fixedly connected to the punch 8. The second servo electric cylinder 601 drives the second connecting rod 602 to extend and retract, so that the punch 8 can be extended and retracted. The upper mold pressing plate 5 is provided with a first through slot 7. The output end of the second driving mechanism 6 The output end is connected to a punch 8, which is slidably connected to the first through slot 7. A second through slot 9 is provided in the lower die 1, in which a spring 10 is fixedly connected, a push rod 11 is fixedly connected to the top of the spring 10, a floating block 12 is fixedly connected to the top of the push rod 11, a concave die 13 is fixedly connected to the top of the lower die 1, a through hole 14 is provided on the concave die 13, a product body 15 is provided on the concave die 13, the upper die pressing plate 5 is moved downward by the first lifting mechanism 3, the upper die pressing plate 5 first contacts the product body 15 and the concave die 13 for pressing, and the punch 8 is moved downward by the second driving mechanism 6. An arc surface 22 is designed on the lower floating block 12, which is higher in the middle and lower on all sides. When the product body 15 contacts the lower floating block 12, the material moves to the surrounding areas to increase the wall thickness of the hole. By adding an arc surface 22 with a higher middle and lower surrounding areas on the floating block 12 to participate in the molding, the useless material in the middle moves to the surrounding areas to increase the wall thickness of the hole, and solve the problem of multiple steps in the hole turning and cracking. The floating block 12 moves downward through the push rod 11 and the spring 10. The elasticity of the spring 10 can make the spring 10 compressed and expanded. The spring 10 expands and bounces off through the push rod 11 to lift the floating block 12, which is convenient for the product body 15 to be removed.

[0031] refer to Figure 2 and Figure 3 Four first guide rods 16 are fixedly connected to the bottom of the support plate 2, and the bottoms of the four first guide rods 16 are slidably connected to the second guide rods 17. The four second guide rods 17 are fixedly connected to the upper mold pressing plate 5. By sliding the four first guide rods 16 to the bottoms of the four second guide rods 17, the upper mold pressing plate 5 can have a good guiding effect.

[0032] refer to Figure 4 A guide plate 18 is fixedly connected to the outside of the spring 10, and four guide holes 19 are opened on the guide plate 18. Four guide rods 20 are fixedly connected to the inside of the second through groove 9. The four guide rods 20 are respectively fixedly connected in the four guide holes 19. By sliding the four guide rods 20 in the four guide holes 19, the compression and expansion of the spring 10 can have a good guiding effect, and the service life of the spring 10 can be improved.

[0033] refer to Figure 1 , Figure 2 and Figure 3 The upper mold pressing plate 5 and the four side lines of the lower mold 1 are all provided with rounded corners 21. The setting of the rounded corners 21 can avoid the edges being too sharp and improve the overall structural strength.

[0034] refer to Figure 4 The top of the floating block 12 is provided with an arc surface 22, and the setting of the arc surface 22 can facilitate the useless materials to be pushed to the surroundings.

[0035] Principle and advantages of use: When in use, the first servo electric cylinder 301 drives the first connecting rod 302 to extend and retract so that the upper mold pressing plate 5 moves downward. The upper mold pressing plate 5 first contacts the product body 15 and the die 13 to press the material, and the second servo electric cylinder 601 drives the second connecting rod 602 to extend and retract so that the punch 8 moves downward. The arc surface 22 is designed on the lower floating block 12, which is high in the middle and low around. When the product body 15 contacts the lower floating block 12, the material moves around to increase the wall thickness of the hole. By adding an arc surface 22 with a high middle and low surroundings on the floating block 12 to participate in the molding, the useless material in the middle moves around to increase the wall thickness of the hole, and the problem of multiple steps and cracking of the hole turning process is solved. The floating block 12 moves downward through the push rod 11 and the spring 10. The elasticity of the spring 10 can make the spring 10 compressed and expanded. The spring 10 expands and bounces off through the push rod 11 to lift the floating block 12, which is convenient for the product body 15 to be removed.

[0036] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A hole-burring structure, comprising a lower mold (1), characterized in that: The side of the lower mold (1) is fixedly connected to a support plate (2), the bottom of the support plate (2) is provided with a first lifting mechanism (3), the output end of the first lifting mechanism (3) is drivingly connected to a mounting frame (4), the bottom of the mounting frame (4) is fixedly connected to an upper mold pressing plate (5) and a second driving mechanism (6), the upper mold pressing plate (5) is provided with a first through slot (7), the output end of the second driving mechanism (6) is drivingly connected to a punch (8), the punch (8) The lower mold (1) is slidably connected in the first through groove (7), a second through groove (9) is provided in the lower mold (1), a spring (10) is fixedly connected in the second through groove (9), a top of the spring (10) is fixedly connected to a push rod (11), a top of the push rod (11) is fixedly connected to a floating block (12), a top of the lower mold (1) is fixedly connected to a die (13), a through hole (14) is provided in the die (13), and a product body (15) is provided on the die (13).

2. A hole-turning structure according to claim 1, characterized in that: The first lifting mechanism (3) comprises a first servo electric cylinder (301) and a first connecting rod (302); the first servo electric cylinder (301) is fixedly mounted on the bottom of the support plate (2); the first connecting rod (302) is transmission-connected to the output end of the first servo electric cylinder (301) via a coupling; and the first connecting rod (302) is fixedly connected to the mounting frame (4).

3. The hole-turning structure according to claim 1, characterized in that: The second driving mechanism (6) comprises a second servo electric cylinder (601) and a second connecting rod (602); the second servo electric cylinder (601) is fixedly mounted on the bottom of the mounting frame (4); the second connecting rod (602) is transmission-connected to the output end of the second servo electric cylinder (601) via a coupling; and the second connecting rod (602) is fixedly connected to the punch (8).

4. The hole-turning structure according to claim 1, characterized in that: The bottom of the support plate (2) is fixedly connected to four first guide rods (16), the bottoms of the four first guide rods (16) are slidably connected to second guide rods (17), and the four second guide rods (17) are fixedly connected to the upper mold pressing plate (5).

5. The hole-turning structure according to claim 1, characterized in that: A guide plate (18) is fixedly connected to the outside of the spring (10), and four guide holes (19) are formed on the guide plate (18). Four guide rods (20) are fixedly connected to the inside of the second through groove (9), and the four guide rods (20) are respectively fixedly connected to the four guide holes (19).

6. The hole-turning structure according to claim 1, characterized in that: The upper mold pressing plate (5) and the lower mold (1) are provided with rounded corners (21) at four edges.

7. The hole-turning structure according to claim 1, characterized in that: The top of the floating block (12) is provided with a curved surface (22).

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