Material returning mechanism and spring piece stamping equipment thereof

Abstract

The utility model discloses a material returning mechanism and a spring piece stamping device thereof, and relates to the technical field of material returning mechanisms, the material returning mechanism comprises a lower die, the lower die is provided with the material returning mechanism, the material returning mechanism comprises a die cavity push plate, and the die cavity push plate is arranged in a die cavity of the lower die in a sliding mode; the pushing assembly is arranged at the bottom of the mold cavity pushing plate, and the pushing assembly is used for driving the mold cavity pushing plate to move; and the cavity is formed in the bottom of the lower mold, a rotating cam is rotationally arranged in the cavity, a driving rod is arranged at the bottom of the rotating cam, and a meshing assembly is arranged between the driving rod and the rotating cam. The material returning mechanism is arranged, the driving rod convenient to move is matched with the meshing assembly to enable the rotating cam to eject the pushing assembly, so that the spring piece is ejected out, material returning is facilitated, the driving rod is conveniently locked in the later period in cooperation with the limiting handle, abnormal movement of the driving rod caused by accidental touch is avoided, and the service life of the driving rod is prolonged. Therefore, good use safety is achieved.

Description

Technical Field

[0001] The utility model relates to the technical field of material return mechanisms, in particular to a material return mechanism and spring sheet stamping equipment thereof. Background Art

[0002] Spring sheets are widely used in various contact devices, and the most commonly used is the simplest straight cantilever leaf spring. The contact sheet must have a small resistance, so it is made of bronze, and stamping equipment is often required for stamping in the production process of spring sheets.

[0003] The working principle of the common spring sheet stamping equipment at present is to place the workpiece inside the mold cavity of the lower mold, and then drive the upper mold downward by the cylinder, so that the workpiece is formed inside the mold cavity formed between the upper mold and the lower mold.

[0004] However, the existing spring sheet stamping equipment is not equipped with a material return mechanism. After each spring sheet is stamped and formed, it is often necessary to manually return the material. The formed spring sheet is overall small and not convenient to be taken out manually. Therefore, we propose a material return mechanism and a spring sheet stamping equipment thereof. Utility Model Content

[0005] The utility model aims to provide a material return mechanism and a spring sheet stamping device thereof. By setting up the material return mechanism, a driving rod that is convenient to move can cooperate with an engaging assembly to make a rotating cam push the assembly, thereby pushing out the spring sheet, so as to facilitate material return. In combination with a limit handle, it is also convenient to lock the driving rod at a later stage to avoid abnormal movement of the driving rod caused by accidental contact, thereby having good safety in use.

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

[0007] In a first aspect, the utility model provides a material return mechanism, comprising a lower mold, wherein the lower mold is provided with a material return mechanism, and the material return mechanism comprises:

[0008] A mold cavity push plate, the mold cavity push plate is slidably arranged inside the mold cavity of the lower mold;

[0009] A pushing component, which is disposed at the bottom of the mold cavity push plate and is used to drive the mold cavity push plate to move;

[0010] A cavity, wherein the cavity is opened at the bottom of the lower mold, a rotating cam is rotatably arranged inside the cavity, a driving rod is arranged at the bottom of the rotating cam, and a meshing assembly is arranged between the driving rod and the rotating cam, and the driving rod is used to drive the rotating cam to rotate;

[0011] A limit handle is arranged at the end of the driving rod, and the limit handle is used to lock the position of the driving rod.

[0012] Preferably, the limit handle includes a fixed column arranged at the end of the driving rod, a movable sleeve sleeved on the outer surface of the fixed column, two limit blocks fixedly connected to the outer side of the movable sleeve, a fixed round block fixedly connected to the end face of one end of the fixed column, a return spring sleeved on the outer surface of one end of the fixed column, sliding grooves opened on both sides of the cavity and limit grooves opened on the other two sides of the cavity.

[0013] Preferably, the meshing assembly includes passive teeth arranged on the outer surface of the rotating cam and active teeth arranged on the top end of the driving rod, and the active teeth are meshingly connected with the passive teeth.

[0014] Preferably, the pushing assembly includes two push rods fixedly connected to the bottom end of the mold cavity push plate and a push plate connected to the two push rods, and each push rod passes through the bottom of the lower mold.

[0015] Preferably, a forward cut-off groove is opened on one side of the bottom of the cavity, and a reverse cut-off groove is opened on the other side of the bottom of the cavity. The limit handle also includes a forward cut-off round block fixedly arranged between the fixed column and the driving rod, and the other end of the driving rod is fixedly connected to a reverse cut-off round block.

[0016] In a second aspect, the utility model provides a spring sheet stamping device, which includes a material return mechanism as described above, wherein the bottom of the lower mold is connected to a frame, and the top of the frame is fixedly provided with an upper mold.

[0017] Technical effects and advantages of the utility model:

[0018] By moving the driving rod and utilizing the engaging assembly, the moving driving rod drives the rotating cam to rotate, thereby pushing up the pushing assembly, so that the pushing assembly drives the cavity push plate to move up, thereby ejecting the spring sheet, thereby facilitating material return, and then moving the driving rod back to reset the rotating cam, thereby resetting the cavity push plate, so as to facilitate the next ejection. At a later stage, the limit handle can be used to lock the position of the driving rod to prevent abnormal movement of the driving rod, which causes abnormal ejection of the cavity push plate, thereby making the entire material return mechanism have good safety in use, and the material return mechanism is easy to be set in a smaller lower mold. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 It is a schematic diagram of the three-dimensional structure of the utility model.

[0020] Figure 2 For this utility model Figure 1 Schematic diagram of the local enlarged structure at point A in the middle.

[0021] Figure 3 It is a structural schematic diagram of the material return mechanism of the utility model.

[0022] Figure 4For this utility model Figure 3 Schematic diagram of the local enlarged structure at point B in the middle.

[0023] In the figure: 1. lower mold; 2. mold cavity push plate; 3. push assembly; 301. push rod; 302. push plate; 4. upper mold; 5. rotating cam; 6. driving rod; 7. engaging assembly; 8. limit handle; 801. fixed column; 802. movable sleeve; 803. limit block; 804. fixed round block; 805. return spring; 806. positive cut-off round block; 807. slide groove; 808. limit groove; 9. positive cut-off groove; 10. reverse cut-off groove; 11. reverse cut-off round block; 12. frame. DETAILED DESCRIPTION

[0024] 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.

[0025] The utility model provides Figure 1-4 The material-removing mechanism shown in the figure comprises a lower mold 1, on which a material-removing mechanism is arranged, and the material-removing mechanism comprises: a mold cavity push plate 2, which is slidably arranged inside the mold cavity of the lower mold 1; a pushing component 3, which is arranged at the bottom of the mold cavity push plate 2, and the pushing component 3 is used to drive the mold cavity push plate 2 to move; a cavity, which is opened at the bottom of the lower mold 1, and a rotating cam 5 is rotatably arranged inside the cavity, a driving rod 6 is arranged at the bottom of the rotating cam 5, and a meshing component 7 is arranged between the driving rod 6 and the rotating cam 5, and the driving rod 6 is used to drive the rotating cam 5 to rotate; a limit handle 8, which is arranged at the end of the driving rod 6, and the limit handle 8 Used to lock the position of the driving rod 6; when the processed spring sheet needs to be unloaded, by moving the driving rod 6 and utilizing the meshing assembly 7, the moving driving rod 6 drives the rotating cam 5 to rotate, thereby pushing up the pushing assembly 3, so that the pushing assembly 3 drives the cavity push plate 2 to move upward, thereby ejecting the spring sheet, thereby facilitating the unloading of the material, and then moving the driving rod 6 back to reset the rotating cam 5, thereby resetting the cavity push plate 2, so as to continue ejecting the material next time. At a later stage, the limit handle 8 can be used to lock the position of the driving rod 6 to prevent abnormal movement of the driving rod 6, which would cause abnormal ejection of the cavity push plate 2, thereby making the entire unloading mechanism have good safety in use.

[0026] It should be further explained that the limit handle 8 includes a fixed column 801 arranged at the end of the driving rod 6, a movable sleeve 802 sleeved on the outer surface of the fixed column 801, two limit blocks 803 fixedly connected to the outer side of the movable sleeve 802, a fixed round block 804 fixedly connected to the end surface of one end of the fixed column 801, a return spring 805 sleeved on the outer surface of one end of the fixed column 801, a slide groove 807 opened on both sides of the cavity and a limit groove 808 opened on the other two sides of the cavity; when the driving rod 6 is moved, the fixed column 801 is moved, the fixed column 801 drives the movable sleeve 802 to move, and the movable sleeve 802 drives the limit block 803 to move along the slide groove 807, so that the fixed column 801 drives the driving rod 6 to move When the driving rod 6 does not need to be moved, the movable sleeve 802 is moved outward, and the movable sleeve 802 moves along the fixed column 801, thereby compressing the return spring 805, until the movable sleeve 802 drives the limit block 803 to move out of the slide groove 807, and then the movable sleeve 802 is rotated ninety degrees to align the limit block 803 with the limit groove 808. At this time, the movable sleeve 802 is released, and the return spring 805 is reset, so that the movable sleeve 802 drives the limit block 803 to be plugged into the limit groove 808. At this time, even if the fixed column 801 is moved, the cooperation between the limit block 803 on the movable sleeve 802 and the limit groove 808 can prevent the fixed column 801 and its driving rod 6 from moving, so that the limit handle 8 has a locking function.

[0027] It should be noted that the meshing assembly 7 includes passive teeth arranged on the outer surface of the rotating cam 5 and active teeth arranged on the top of the driving rod 6, and the active teeth are meshed and connected with the passive teeth; the driving rod 6 is a rectangular rod, and when the driving rod 6 moves, the rotating cam 5 is driven to rotate by utilizing the cooperation of the active teeth and the driven teeth.

[0028] It should be particularly noted that the pushing assembly 3 includes two push rods 301 fixedly connected to the bottom end of the cavity push plate 2 and a push plate 302 connected to the two push rods 301, and each push rod 301 passes through the bottom of the lower mold 1; when the rotating cam 5 rotates, it will push up the push plate 302, thereby driving the push rod 301 to move upward, and then driving the cavity push plate 2 to move upward.

[0029] Furthermore, a forward cut-off groove 9 is provided on one side of the bottom of the cavity, and a reverse cut-off groove 10 is provided on the other side of the bottom of the cavity. The limit handle 8 also includes a forward cut-off block 806 fixedly arranged between the fixed column 801 and the driving rod 6, and the other end of the driving rod 6 is fixedly connected with a reverse cut-off block 11; when the driving rod 6 moves in the forward direction, that is, it drives the rotating cam 5 to rotate and push the push component 3, when the driving rod 6 moves to the extreme position, the forward cut-off block 806 will be limited by the forward cut-off groove 9, thereby avoiding the separation of the active teeth and the driven teeth, and when the driving rod 6 moves in the reverse direction, that is, it drives the rotating cam 5 to rotate and no longer pushes the push component 3, when the driving rod 6 moves to the extreme position, the reverse cut-off block 11 will be limited by the reverse cut-off groove 10, thereby avoiding the separation of the active teeth and the driven teeth.

[0030] A spring sheet stamping device includes a material return mechanism as mentioned above, wherein the bottom of the lower mold 1 is connected to a frame 12, and the top of the frame 12 is fixedly provided with an upper mold 4; the upper mold 4 is moved downward to close the mold with the lower mold 1, thereby realizing the stamping process, and the entire limit handle 8 can also be changed into an electric rod, which drives the driving rod 6 to move.

[0031] Finally, it should be noted that the above is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Although the present utility model has been described in detail with reference to the aforementioned embodiments, it is still possible for those skilled in the art to modify the technical solutions described in the aforementioned embodiments, or to make equivalent substitutions for some of the technical features therein. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present utility model shall be included in the protection scope of the present utility model.

Claims

1. A material removal mechanism, comprising a lower mold (1), characterized in that: The lower mold (1) is provided with a material return mechanism, and the material return mechanism comprises: A mold cavity push plate (2), wherein the mold cavity push plate (2) is slidably arranged inside the mold cavity of the lower mold (1); A pushing component (3), wherein the pushing component (3) is arranged at the bottom of the mold cavity push plate (2), and the pushing component (3) is used to drive the mold cavity push plate (2) to move; A cavity, wherein the cavity is formed at the bottom of the lower mold (1), a rotating cam (5) is rotatably arranged inside the cavity, a driving rod (6) is arranged at the bottom of the rotating cam (5), and a meshing assembly (7) is arranged between the driving rod (6) and the rotating cam (5), and the driving rod (6) is used to drive the rotating cam (5) to rotate; A limit handle (8), wherein the limit handle (8) is arranged at the end of the driving rod (6), and the limit handle (8) is used to lock the position of the driving rod (6).

2. A material return mechanism according to claim 1, characterized in that: The limit handle (8) comprises a fixed column (801) arranged at the end of the driving rod (6), a movable sleeve (802) sleeved on the outer surface of the fixed column (801), two limit blocks (803) fixedly connected to the outer side of the movable sleeve (802), a fixed round block (804) fixedly connected to the end surface of one end of the fixed column (801), a return spring (805) sleeved on the outer surface of one end of the fixed column (801), sliding grooves (807) opened on both sides of the cavity, and limit grooves (808) opened on the other two sides of the cavity.

3. A material return mechanism according to claim 1, characterized in that: The meshing assembly (7) comprises passive teeth arranged on the outer surface of the rotating cam (5) and active teeth arranged on the top end of the driving rod (6), and the active teeth are meshed and connected with the passive teeth.

4. A material return mechanism according to claim 1, characterized in that: The pushing assembly (3) comprises two push rods (301) fixedly connected to the bottom end of the mold cavity push plate (2) and a push plate (302) connected to the two push rods (301), and each push rod (301) passes through the bottom of the lower mold (1).

5. A material return mechanism according to claim 2, characterized in that: A forward cut-off groove (9) is provided on one side of the bottom of the cavity, and a reverse cut-off groove (10) is provided on the other side of the bottom of the cavity. The limit handle (8) further comprises a forward cut-off round block (806) fixedly arranged between the fixing column (801) and the driving rod (6), and the other end of the driving rod (6) is fixedly connected with a reverse cut-off round block (11).

6. A spring sheet stamping device, comprising a material removal mechanism according to any one of claims 1 to 5, characterized in that: The bottom of the lower mold (1) is connected to a frame (12), and the top of the frame (12) is fixedly provided with an upper mold (4).

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