Rocker arm type upward forming mechanism

Abstract

The utility model relates to a rocker arm type upward forming mechanism which comprises an upper die and a lower die, a forming block is arranged on the lower die, a base is arranged in the lower die, a guide groove in sliding fit with the forming block is formed in the base, a driving block is arranged on the bottom face of the upper die, a rotating shaft is rotationally connected to the base, a rocker arm is fixedly connected to the outer surface of the rotating shaft, and the rocker arm is rotationally arranged on the base. The upper die drives the driving block to descend, the driving block enables one end of the rocker arm to descend, and therefore the end, close to the forming block, of the rocker arm moves upwards, the rocker arm drives the forming block to move towards the upper die, and the forming block is matched with the upper die to achieve extrusion forming on a workpiece. And in this way, an air cylinder does not need to be additionally arranged in the lower die, and the effect of reducing the die manufacturing cost is achieved.

Description

Technical Field

[0001] The present application relates to the technical field of upward molding, and in particular to a rocker arm type upward molding mechanism. Background Art

[0002] Stamping refers to a processing method in which a press and a die are used to apply external force to the material to cause plastic deformation or separation, thereby obtaining a workpiece of the desired shape and size.

[0003] Some existing products often need to perform upward molding processes in some parts during processing. The conventional upward molding method is to install an upward output cylinder in the lower mold, and the cylinder drives the molding blocks in the lower mold to be extruded upward. However, due to the complex structure and small space in the lower mold, it is not convenient to install the cylinder, and the installation of the cylinder increases the overall production cost of the mold, which has obvious shortcomings. Summary of the invention

[0004] In order to reduce the production cost of the mold, the present application provides a rocker-arm upward molding mechanism.

[0005] The present application provides a rocker-type upward forming mechanism that adopts the following technical solution:

[0006] A rocker-arm upward forming mechanism comprises an upper die and a lower die, wherein the lower die is provided with a forming block for upward forming, the lower die is provided with a base, the base is provided with a guide groove, the forming block is slidably arranged in the guide groove, the bottom surface of the upper die is provided with a driving block, the base is rotatably connected with a rotating shaft, the outer surface of the rotating shaft is fixedly connected with a rocker arm, the rocker arm is rotatably arranged on the base, one end of the rocker arm abuts against the bottom of the driving block, and the other end abuts against the bottom of the forming block.

[0007] By adopting the above technical solution, when the upper mold moves downward and closes with the lower mold, the upper mold drives the driving block to descend, and the driving block causes one end of the rocker arm to descend. The rocker arm rotates under the action of the rotating shaft, so that the end of the rocker arm close to the forming block moves upward, and the rocker arm drives the forming block to move toward the upper mold. The forming block cooperates with the upper mold to extrude the workpiece, thereby achieving the effect of upward forming. This setting does not require adding a cylinder in the lower mold, making the design of the lower mold simpler and tighter, and reducing the production cost of the mold.

[0008] Optionally, a guide seat is slidably connected in the guide groove, the bottom surface of the forming block is connected to the top surface of the guide seat, a groove is formed on a side of the guide seat close to the rotating shaft, and one end of the rocker arm is always pressed against the top of the groove.

[0009] By adopting the above technical solution, while the driving block drives the rocker arm to rotate, the rocker arm part pressed against the top of the groove drives the guide seat to rise, and the rising guide seat drives the forming block to rise. The setting of the guide seat transforms the active connection between the end of the rocker arm and the forming block into a rigid connection, thereby improving the stability of the rising of the forming block and reducing the possibility of the forming block escaping from the guide groove.

[0010] Optionally, a support block is provided in the base, the support block is arranged below the rotating shaft, and the surface of the support block is in close contact with the rocker arm.

[0011] By adopting the above technical solution, the upper mold usually relies on the cylinder to quickly fit with the lower mold. Therefore, when the driving block presses down the rocker arm, the rocker arm will be subjected to strong impact stress. The setting of the support block can support the rotating shaft and the rocker arm, effectively disperse the impact stress on the rocker arm and the rotating shaft, and further improve the stability of the upward molding mechanism.

[0012] Optionally, a reset member is provided on the base for moving the forming block back into the guide groove.

[0013] By adopting the above technical solution, the setting of the reset member enables the forming block to move back into the guide groove after completing the upward forming process, thereby resetting the rocker arm so that the driving block can smoothly drive the rocker arm when the upward forming is performed next time, thereby ensuring the continuity of the upward forming process.

[0014] Optionally, the reset member is a nitrogen spring arranged on the bottom surface of the base, the output shaft of the nitrogen spring is connected to the bottom surface of the guide seat, and when the nitrogen spring is in a natural state, the forming block is placed inside the guide groove.

[0015] By adopting the above technical solution, when the driving block is separated from the rocker arm, the pressure of the driving block on one end of the rocker arm is cancelled, the push rod of the nitrogen spring is subjected to the upward force and the push rod of the nitrogen spring pulls the guide seat and the forming block back into the guide groove, so that the end of the rocker arm close to the forming block descends, the end of the rocker arm close to the driving block rises, and the rocker arm is reset, thereby ensuring the smooth progress of the next upward forming process.

[0016] Optionally, a limiting bolt is provided on the bottom surface of the lower die, and the limiting bolt passes through the lower die and the nitrogen spring and is threadably matched with the nitrogen spring.

[0017] By adopting the above technical solution, the nitrogen spring is fixed between the base and the lower die by the limit bolt, thereby ensuring the accuracy of the installation of the nitrogen spring. At the same time, the operator can separate the nitrogen spring from the lower die by removing the limit bolt.

[0018] Optionally, the reset member includes an iron block arranged on the bottom surface of the guide seat, the iron block is slidably connected in the guide groove, and a magnetic block for adsorbing the iron block is fixedly installed on one side of the base facing the guide seat, and the iron block and the magnetic block are in the same vertical direction.

[0019] By adopting the above technical solution, when the driving block is separated from the rocker arm, the pressure of the driving block on one end of the rocker arm is cancelled, and the abutment force of the rocker arm on the guide seat disappears, thereby eliminating the upward force on the iron block. Under the action of the magnetic block, the iron block is adsorbed by the magnetic block and moves downward in the guide groove. The iron block pulls the guide seat and the forming block back into the guide groove.

[0020] Optionally, a plurality of positioning posts are provided on the lower mold, and positioning holes are opened on the base at positions corresponding to the positioning posts, and the positioning posts are plugged into the positioning holes.

[0021] By adopting the above technical solution, the operator ensures the installation accuracy of the base by using the cooperation of the positioning column and the positioning hole, thereby ensuring the accuracy of the upward forming process of the forming block.

[0022] In summary, the present application includes at least one of the following beneficial technical effects:

[0023] 1. The present application sets a rocker arm, a rotating shaft, a forming block and a driving block. The upper die drives the driving block to descend, and the driving block causes one end of the rocker arm to descend, so that the end of the rocker arm close to the forming block moves upward, and the rocker arm drives the forming block to move toward the upper die. The forming block cooperates with the upper die to extrude and form the workpiece, thereby achieving an upward forming effect. Such a setting does not require adding a cylinder in the lower die, making the design of the lower die simpler and more compact, and reducing the production cost of the mold;

[0024] 2. The present application sets a reset member, which enables the forming block to move back into the guide groove after completing the upward forming process, thereby resetting the rocker arm, so that the driving block can smoothly drive the rocker arm when the upward forming is performed next time, thereby ensuring the continuity of the upward forming process. BRIEF DESCRIPTION OF THE DRAWINGS

[0025] Figure 1 It is an exploded view between the upper mold, base and lower mold of the present application.

[0026] Figure 2 It is a structural schematic diagram of the base in Example 1 of the present application.

[0027] Figure 3 It is a cross-sectional view of the base in Example 1 of the present application.

[0028] Figure 4 This is a cross-sectional view of the base in Example 2 of the present application.

[0029] Explanation of the accompanying drawings: 1. upper mold; 11. driving block; 2. lower mold; 21. positioning column; 3. base; 31. positioning hole; 4. guide groove; 41. forming block; 42. guide seat; 421. groove; 5. support block; 6. rotating shaft; 61. rocker arm; 7. reset member; 71. nitrogen spring; 72. iron block; 73. magnetic block; 8. limit bolt. DETAILED DESCRIPTION

[0030] The following is combined with Figure 1-4 This application is described in further detail.

[0031] The embodiment of the present application discloses a rocker-arm upward forming mechanism.

[0032] Example 1

[0033] Reference Figure 1 A rocker-type upward molding mechanism includes an upper mold 1 and a lower mold 2. A base 3 is detachably connected to the lower mold 2. A plurality of positioning holes 31 are provided on the surface of the base 3. Four positioning holes 31 are taken as an example in this embodiment. Positioning posts 21 are installed at positions of the lower mold 2 corresponding to the positioning holes 31. The positioning posts 21 are plugged into the positioning holes 31. The operator can accurately install the base 3 on the lower mold 2 according to the position of the positioning posts 21 to ensure the accuracy of the upward molding process.

[0034] Reference Figure 1 and Figure 2 A guide groove 4 is provided on the base 3, and a forming block 41 for upward forming is slidably connected in the guide groove 4. A driving block 11 for driving the forming block 41 to move upward is fixedly installed on the surface of the upper mold 1 close to the base 3. A supporting block is fixedly installed on the base 3, and a rotating shaft 6 is arranged above the supporting block. The rotating shaft 6 is rotatably connected to the base 3 and is arranged between the guide seat 42 and the driving block 11. A rocker arm 61 is fixedly installed on the outer surface of the rotating shaft 6, and the rocker arm 61 is rotatably connected to the surface of the support block. One end of the rocker arm 61 abuts against the lower surface of the driving block 11, and the other end is arranged below the forming block 41.

[0035] When the upper mold 1 moves downward and closes with the lower mold 2, the upper mold 1 drives the driving block 11 to descend, and the driving block 11 causes one end of the rocker arm 61 to descend. The rocker arm 61 rotates under the action of the rotating shaft 6, so that the end of the rocker arm 61 close to the forming block 41 moves upward, and the rocker arm 61 drives the forming block 41 to move toward the upper mold 1. The forming block 41 cooperates with the upper mold 1 to extrude and mold the workpiece, thereby achieving the effect of upward molding. This arrangement does not require adding a cylinder in the lower mold 2, making the design of the lower mold 2 simpler and tighter, thereby reducing the manufacturing cost of the mold.

[0036] The setting of the support block can support the rotating shaft 6 and the rocker arm 61, effectively disperse the impact stress on the rocker arm 61 and the rotating shaft 6, and further improve the stability of the upward molding mechanism.

[0037] Reference Figure 3 In order to further improve the stability of the upward movement of the forming block 41, a guide seat 42 is slidably connected in the guide groove 4, the top surface of the guide seat 42 is fixedly connected to the bottom surface of the forming block 41, and a groove 421 is provided on the side of the guide seat 42 away from the guide groove 4, and the end of the rocker arm 61 close to the guide groove 4 is always pressed against the top of the groove 421.

[0038] While the driving block 11 drives the rocker arm 61 to rotate, the end of the rocker arm 61 pressed against the top of the groove 421 drives the guide seat 42 to rise, and the rising of the guide seat 42 drives the forming block 41 to rise. The setting of the guide seat 42 converts the active connection between the end of the rocker arm 61 and the forming block 41 into a rigid connection, thereby improving the stability of the rising of the forming block 41 and reducing the possibility of the forming block 41 escaping from the guide groove 4.

[0039] Reference Figure 3 In order to ensure the continuity of the upward forming process, a reset member 7 is provided on the base 3, and the reset member 7 includes a nitrogen spring 71 detachably connected to the lower mold 2, one end of the nitrogen spring 71 extends upward and penetrates the guide groove 4, and the push rod of the nitrogen spring 71 is fixedly connected to the bottom surface of the guide seat 42. When the nitrogen spring 71 is in a natural state, the forming block 41 is arranged inside the guide groove 4.

[0040] The reset member 7 includes a nitrogen spring 71 connected to the lower mold 2 through a limit bolt 8. One end of the nitrogen spring 71 extends upward and is inserted into the guide groove 4. The output shaft of the nitrogen spring 71 is fixedly connected to the bottom surface of the guide seat 42. When the nitrogen spring 71 is in a natural state, the forming block 41 is arranged inside the guide groove 4.

[0041] When the upward forming process is completed, the upper mold 1 drives the driving block 11 away from the rocker arm 61, the pressure of the driving block 11 on one end of the rocker arm 61 is cancelled, and the upward force on the push rod part of the nitrogen spring 71 disappears. Under the reset action of the nitrogen spring 71, the push rod of the nitrogen spring 71 pulls the guide seat 42 and the forming block 41 back into the guide groove 4, so that the end of the rocker arm 61 close to the forming block 41 descends, the end of the rocker arm 61 close to the driving block 11 rises, and the rocker arm 61 is reset, thereby ensuring the smooth progress of the next upward forming process.

[0042] A limiting bolt 8 is provided on the bottom surface of the lower die 2 , one end of the limiting bolt 8 extends upward and passes through the lower die 2 and the nitrogen spring 71 , and the limiting bolt 8 is threadedly matched with the bottom end of the nitrogen spring 71 .

[0043] The nitrogen spring 71 is fixed between the base 3 and the lower mold 2 by the limiting bolt 8, which ensures the accuracy of the installation of the nitrogen spring 71. At the same time, the operator can separate the nitrogen spring 71 from the lower mold 2 by removing the limiting bolt 8.

[0044] The implementation principle of a rocker-type upward molding mechanism of the embodiment of the present application is as follows: when the upper mold 1 moves downward to close the mold with the lower mold 2, the upper mold 1 drives the driving block 11 to descend, and the driving block 11 causes one end of the rocker arm 61 to descend, and the rocker arm 61 rotates under the action of the rotating shaft 6, so that the end of the rocker arm 61 close to the molding block 41 moves upward, and the rocker arm 61 drives the guide seat 42 to move upward through the hard contact with the groove 421, and the guide seat 42 drives the molding block 41 to move upward, and the molding block 41 cooperates with the upper mold 1 to perform extrusion molding on the workpiece, thereby achieving the effect of upward molding. Such a setting does not require adding a cylinder in the lower mold 2, making the design of the lower mold 2 simpler and tighter, and reducing the manufacturing cost of the mold;

[0045] When the upward forming process is completed, the upper mold 1 drives the driving block 11 away from the rocker arm 61, the pressure of the driving block 11 on one end of the rocker arm 61 is cancelled, and the upward force on the push rod part of the nitrogen spring 71 disappears. Under the reset action of the nitrogen spring 71, the push rod of the nitrogen spring 71 pulls the guide seat 42 and the forming block 41 back into the guide groove 4, so that the end of the rocker arm 61 close to the forming block 41 descends, the end of the rocker arm 61 close to the driving block 11 rises, and the rocker arm 61 is reset, thereby ensuring the smooth progress of the next upward forming process.

[0046] Example 2

[0047] Reference Figure 4 The difference between this embodiment and embodiment 1 is that the reset member 7 includes an iron block 72, which is fixedly connected to the end surface of the guide seat 42 away from the forming block 41, and the iron block 72 is slidably connected in the guide groove 4. A magnetic block 73 for adsorbing the iron block 72 is fixedly installed on the base 3, and the magnetic block 73 is fixedly installed on the end surface of the base 3 facing the guide seat 42, and the iron block 72 and the magnetic block 73 are in the same vertical direction.

[0048] The implementation principle of Example 2 is that after the upward forming process is completed, the upper mold 1 drives the driving block 11 away from the rocker arm 61, the pressure of the driving block 11 on one end of the rocker arm 61 is cancelled, and the abutment force of the rocker arm 61 on the guide seat 42 disappears, thereby eliminating the upward force on the iron block 72. Under the action of the magnetic block 73, the iron block 72 is adsorbed by the magnetic block 73 so that the iron block 72 moves downward in the guide groove 4. The iron block 72 pulls the guide seat 42 and the forming block 41 back into the guide groove 4, causing the end of the rocker arm 61 close to the forming block 41 to descend, the end of the rocker arm 61 close to the driving block 11 to rise, and the rocker arm 61 is reset, thereby ensuring the smooth progress of the next upward forming process.

[0049] The above are all preferred embodiments of the present application, and the protection scope of the present application is not limited thereto. Therefore, any equivalent changes made according to the structure, shape, and principle of the present application should be included in the protection scope of the present application.

Claims

1. A rocker-type upward molding mechanism, comprising an upper mold (1) and a lower mold (2), wherein the lower mold (2) is provided with a molding block (41) for upward molding, characterized in that: A base (3) is provided inside the lower mold (2), a guide groove (4) is provided on the base (3), the molding block (41) is slidably arranged in the guide groove (4), a driving block (11) is provided on the bottom surface of the upper mold (1), a rotating shaft (6) is rotatably connected to the base (3), a rocker arm (61) is fixedly connected to the outer surface of the rotating shaft (6), the rocker arm (61) is rotatably arranged on the base (3), one end of the rocker arm (61) abuts against the bottom of the driving block (11), and the other end abuts against the bottom of the molding block (41).

2. A rocker-arm upward forming mechanism according to claim 1, characterized in that: A guide seat (42) is slidably connected in the guide groove (4), the bottom surface of the forming block (41) is connected to the top surface of the guide seat (42), a groove (421) is provided on a side of the guide seat (42) close to the rotating shaft (6), and one end of the rocker arm (61) is always pressed against the top of the groove (421).

3. A rocker-arm upward forming mechanism according to claim 2, characterized in that: A support block (5) is provided inside the base (3), and the support block (5) is arranged below the rotating shaft (6), and the surface of the support block (5) is in close contact with the rocker arm (61).

4. A rocker-arm upward forming mechanism according to claim 3, characterized in that: The base (3) is provided with a reset member (7) for moving the forming block (41) back into the guide groove (4).

5. The rocker-type upward forming mechanism according to claim 4, characterized in that: The reset member (7) is a nitrogen spring (71) arranged on the bottom surface of the base (3); the output shaft of the nitrogen spring (71) is connected to the bottom surface of the guide seat (42); when the nitrogen spring (71) is in a natural state, the forming block (41) is placed inside the guide groove (4).

6. A rocker-arm upward forming mechanism according to claim 5, characterized in that: A limiting bolt (8) is provided on the bottom surface of the lower die (2), and the limiting bolt (8) passes through the lower die (2) and the nitrogen spring (71), and is threadably matched with the nitrogen spring (71).

7. The rocker-type upward forming mechanism according to claim 5, characterized in that: The reset member (7) comprises an iron block (72) arranged on the bottom surface of the guide seat (42), the iron block (72) being slidably connected in the guide groove (4), and a magnetic block (73) for adsorbing the iron block (72) is fixedly mounted on one side of the base (3) facing the guide seat (42), and the iron block (72) and the magnetic block (73) are in the same vertical direction.

8. The rocker-arm upward forming mechanism according to claim 1, characterized in that: The lower mold (2) is provided with a plurality of positioning columns (21), and the base (3) is provided with positioning holes (31) at positions corresponding to the positioning columns (21), and the positioning columns (21) are inserted and fitted in the positioning holes (31).

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