A stamping device for balancing the forces on a workpiece

Abstract

This invention proposes a stamping device for balancing the forces on a workpiece, comprising a frame, a stamping mechanism, a positioning mechanism, and a balancing mechanism. The stamping mechanism is mounted on the frame to stamp the workpiece. The positioning mechanism is mounted on the frame to position the workpiece to be stamped. The balancing mechanism is slidably mounted on the frame and adjusts the direction and / or magnitude of the force applied to the workpiece to ensure overall force balance during the stamping process. By adjusting the position of the balancing mechanism and the magnitude of the applied force, the workpiece is always kept under overall force balance during stamping, thereby preventing product displacement during processing, which could lead to defects such as unqualified hole positions and excessive burrs.

Description

Technical Field

[0001] This invention relates to the field of stamping, and more particularly to a stamping apparatus that balances the forces acting on a workpiece. Background Technology

[0002] The existing patent CN104874659B describes a method for simultaneously stamping irregularly shaped steel inserted into a receiving hole in multiple directions, resulting in balanced force distribution.

[0003] In actual punching of workpieces, the requirements for punching position and quantity, as well as the shape of the workpiece, vary due to different product processing requirements. If the punching position of the workpiece is not symmetrical, the punching force applied to the outer circumference of the workpiece by multiple punching heads at the same time cannot cancel each other out, thus failing to achieve force balance. Such products are prone to displacement during processing, resulting in defects such as unqualified hole position and excessive burrs. Summary of the Invention

[0004] Based on the technical problems existing in the background art, the present invention proposes a stamping device that balances the force on the workpiece.

[0005] The present invention proposes a stamping device for balancing the forces on a workpiece, comprising a frame, a stamping mechanism, a positioning mechanism, and a balancing mechanism; the stamping mechanism is mounted on the frame to stamp the workpiece; the positioning mechanism is mounted on the frame to position the workpiece to be stamped; and the balancing mechanism is slidably mounted on the frame to balance the forces on the workpiece during the stamping process by adjusting the direction and / or magnitude of the force applied to the workpiece.

[0006] Preferably, the frame is provided with a circular slide rail centered on the workpiece, and the circular slide rail is slidably connected to a slide block; the balancing device includes a fourth driving component and a push rod, the fourth driving component is mounted on the slide block, and the output end of the fourth driving component is fixedly connected to the push rod.

[0007] Preferably, the stamping mechanism includes a first driving member and a stamping head, wherein the first driving member is mounted on the frame and its output end is fixedly connected to the stamping head.

[0008] Preferably, the first driving member includes an upper wedge and a lower wedge. The lower wedge has a flat shape that matches the lateral coplanar portion of the upper wedge and is connected to the upper wedge along a portion of the flat shape. The upper wedge is installed below the upper end plate, and the lower wedge is installed on the frame and connected to the stamping head. The upper wedge moves vertically downward to push the lower wedge to move linearly, thereby driving the stamping head to stamp the outer peripheral surface of the workpiece. One end of the upper wedge is connected to the frame through a reset member so that the upper wedge is reset after the stamping is completed.

[0009] Preferably, the stamping mechanism has a first limiting member on the stamping path toward the workpiece processing position.

[0010] Preferably, it further includes a second limiting member, which is mounted on the frame and located on the stamping path. The second limiting member has a limiting through hole, and the first driving member is connected to the stamping head through the limiting through hole.

[0011] Preferably, the device further includes an ejector mechanism, which includes an ejector plate and a third drive component. The ejector plate is movably mounted on the frame and located below the workpiece. The third drive component is mounted on the frame and connected to the ejector plate so that after stamping, the workpiece (8) is moved upward via the ejector plate (72).

[0012] Preferably, the third driving component includes a chassis, a first connecting member, and a second connecting member. The chassis is located below the frame and is connected to the upper template through the first connecting member. The two ends of the second connecting member are respectively connected to the top plate and the chassis.

[0013] Preferably, a displacement sensor is provided below the telescopic end of the fourth driving component.

[0014] Preferably, the balancing device includes a rotary motor, which is mounted below the frame and located at the center of the circular track. The output shaft of the rotary motor is connected to the bottom of the balancing seat to drive the balancing device to rotate.

[0015] Preferably, the positioning mechanism includes a positioning seat, the positioning element is mounted on a frame located inside the workpiece and fits against the inner wall of the workpiece, and the positioning element has a stamping through hole corresponding to the stamping part of the workpiece.

[0016] The present invention proposes a stamping device that balances the force on the workpiece. By adjusting the position of the balancing mechanism and the magnitude of the applied force, the workpiece is always subjected to overall force balance during stamping. This avoids product displacement during processing, which can cause defects such as unqualified hole position and excessive burrs. Attached Figure Description

[0017] Figure 1 This is a schematic diagram of a stamping device that balances the forces on a workpiece according to the present invention.

[0018] Figure 2 This is a partial structural schematic diagram of a stamping device for balancing the forces on a workpiece, as proposed in this invention.

[0019] Figure 3 This is a partial structural diagram from another perspective of a stamping device that balances the forces on a workpiece, as proposed in this invention.

[0020] Figure 4 for Figure 1 Schematic diagram of the ejection mechanism;

[0021] Figure 5 for Figure 1 Force analysis diagram of the workpiece;

[0022] Figure 6 for Figure 1 Main view of the top plate; Detailed Implementation

[0023] Reference Figure 1-6 This invention proposes a stamping device for balancing the forces on a workpiece, comprising a frame 1, a stamping mechanism, a positioning mechanism, and a balancing mechanism 2; the stamping mechanism consists of four parts mounted on the frame 1 and located around the workpiece 8; the positioning mechanism is mounted on the frame 1 to position the workpiece 8 to be stamped; and the balancing mechanism 2 is slidably mounted on the frame 1 to adjust the direction and magnitude of the force applied to the workpiece 8 to balance the forces on the workpiece 8 during the stamping process.

[0024] During stamping, the workpiece 8 is first fixed by the positioning mechanism to prevent displacement during the stamping process. The workpiece 8 is regarded as a point mass, and the stamping force at each stamping point of the workpiece 8 is orthogonally decomposed to calculate whether the workpiece 8 is in force balance during the stamping process. If the workpiece 8 is not in force balance during stamping, the position of the balancing mechanism 2 and the magnitude of the applied force can be adjusted to make the workpiece 8 in force balance as a whole during stamping.

[0025] In a further embodiment, for example, a force of magnitude A is applied when stamping workpiece 8, and combined with... Figure 5 Force analysis: On the X-axis, F(X) = (Acosα - Acosα) + (Acosβ - Acosβ) = 0

[0026] On the Y axis, F(Y)=(-Asinɑ-Asinɑ)+(Asinβ+Asinβ)

[0027] Then determine Figure 1 Workpiece 8 is in force balance in the X-axis direction, and then F(Y) is applied in the opposite direction in the Y-axis direction by the balancing device 2;

[0028] In this embodiment, the frame 1 is provided with a circular slide 21 centered on the workpiece 8, and the circular slide 21 is slidably connected to a slide block 22; the balancing device 2 includes a fourth driving component 23 and a push head 24, the fourth driving component 23 is mounted on the slide block 22, and the output end of the fourth driving component 23 is fixedly connected to the push head 24; the fourth driving component 23 is a cylinder, and the magnitude and direction of the adjustment force to be applied by the balancing device 2 are calculated, and the magnitude of the force applied to the workpiece 8 is adjusted by driving the balancing device 2 to rotate and controlling the extension length of the cylinder;

[0029] In a further embodiment, the balancing device 2 also includes a rotary motor, which is installed below the frame 1 and located at the center of the circular track. The output shaft of the rotary motor is connected to the bottom of the slide to drive the balancing device 2 to rotate. The rotary motor is either a servo motor or a geared motor. The rotary motor drives the slide to rotate, which in turn drives the push head 24 to rotate, thereby quickly adjusting the balancing device 2.

[0030] In a further embodiment, a displacement sensor is provided below the telescopic end of the fourth drive member 23, thereby adjusting the force applied by the stamping head 33 to the workpiece 8 by adjusting the telescopic length of the telescopic end.

[0031] In this embodiment, the stamping mechanism includes a first driving member and a stamping head 33. The first driving member is mounted on the frame 1 and its output end is fixedly connected to the stamping head 33. The first driving member is an existing device such as a cylinder or a lead screw that can achieve linear movement. The stamping head 33 is driven by the first driving member to punch holes on the outer peripheral surface of the workpiece 8.

[0032] The difference between this embodiment and the previous embodiment is that: a vertically adjustable upper end plate 4 is installed above the frame 1; the first driving component includes a vertically movable upper wedge 31 and a lower wedge 32; the lower wedge 32 has a flat shape that matches the lateral coplanar portion of the upper wedge 31, and is connected to the upper wedge 31 along a portion of the flat shape; the upper wedge 31 is installed below the upper end plate 4; the lower wedge 32 is installed on the frame 1 and connected to the stamping head 33; the upper wedge 31 moves vertically downward to push the lower wedge 32 to move linearly to drive the stamping head 33 to stamp the outer peripheral surface of the workpiece 8; one end of the upper wedge 31 is connected to the frame 1 through a reset component so that the upper wedge 31 is reset after the stamping is completed.

[0033] Furthermore, during the stamping process, the upper wedge block 31 is driven to descend, pushing the lower wedge block 32 to move unidirectionally toward the workpiece 8 to be stamped, thereby driving the stamping head 33 to stamp the outer peripheral surface of the workpiece 8.

[0034] In a further embodiment, the upper end plate 4 is connected to the frame 1 via a second driving component 10, which is a cylinder. The upper end plate 4 is driven to descend vertically by the driving cylinder, thereby driving multiple stamping mechanisms to simultaneously stamp the outer periphery of the workpiece 8. This ensures that the stamping pressure of the multiple stamping mechanisms is the same, preventing stamping deviation, and improving stamping efficiency.

[0035] The difference between this embodiment and the previous embodiment is that the second driving component 10 can be a lead screw, a vertical slide rail, a slider, or other structures.

[0036] In a further embodiment, the frame 1 is provided with a fixed seat 11 corresponding to the lower wedge 32. The upper wedge 31 is connected to the fixed seat 11 through an elastic element. When the lower wedge 32 presses the workpiece 8, the elastic element is in a stretched state. When the pressing is completed, the upper wedge 31 is reset by the upper template 4, and the elastic element drives the lower wedge 32 to reset due to the elastic force, thereby realizing the reset of the lower wedge 32 for the next pressing.

[0037] In a further embodiment, a first limiting member is provided on the stamping path of the stamping mechanism toward the processing position of the workpiece 8. The first limiting member includes a slide rail slidably connected to the lower wedge block 32, with the tail end of the slide rail facing the processing position of the workpiece 8. The upper wedge block 31 descends to push the lower wedge block 32 to move along the slide rail, thereby driving the stamping head 33 to stamp the outer peripheral surface of the workpiece 8, preventing the lower wedge block 32 from shifting and causing the punching position to shift, resulting in unqualified hole position, etc.

[0038] The difference between this embodiment and the previous embodiment is that: the lower wedge block 32 is provided with limiting baffles 9 on both sides of the moving path of the workpiece 8 towards the processing position, thereby achieving the same technical effect of preventing the lower wedge block 32 from shifting during movement.

[0039] In a further embodiment, a second limiting member 5 is also included. The second limiting member 5 is mounted on the frame 1 and located on the stamping path. The second limiting member 5 has a limiting through hole. The first driving member is connected to the stamping head 33 through the limiting through hole.

[0040] In a further embodiment, the lower wedge block 32 has a groove on the side facing the workpiece 8, and an output shaft is engaged in the groove and connected to the punch head 33 through a limiting through hole;

[0041] In this embodiment, the positioning mechanism includes a positioning seat 6. The positioning element 6 is installed on the frame 1 located inside the mounting position of the workpiece 8 and is close to the inner wall of the workpiece 8. The positioning element 6 has a stamping through hole corresponding to the stamping position on the outer peripheral surface of the workpiece 8. By setting the positioning element 6, when the workpiece 8 is punched on the outer peripheral surface of the workpiece 8, the stamping position of the workpiece 8 is supported from the inside of the workpiece 8, that is, the workpiece 8 is prevented from shifting due to force during stamping, resulting in stamping offset. At the same time, by setting the stamping through hole, the waste material generated by stamping on the outer peripheral surface of the workpiece 8 is pushed out by the stamping head 33.

[0042] In a further embodiment, the positioning element 6 is fitted to the inner surface shape of the workpiece 8;

[0043] In this embodiment, an ejection mechanism is also included. The ejection mechanism includes an ejection plate 72 and a third driving member. The ejection plate 72 is movably mounted on the frame 1 located below the workpiece 8. The third driving member is mounted on the frame 1 and connected to the ejection plate 72 so that the ejection plate 72 moves upward after the stamping is completed.

[0044] In a further embodiment, the third driving component includes a chassis 71, a first connecting member 73, and a second connecting member 74. The chassis 71 is located below the frame 1 and is connected to the upper template 4 through the first connecting member 73. The two ends of the second connecting member 74 are respectively connected to the bottom of the ejector plate 72 and the chassis 71. The ejector plate 72 has a groove that is adapted to the positioning member 6 at the position corresponding to the positioning member 6.

[0045] Then, when the stamping is completed, the upper template 4 drives the chassis 71 to move upward through the first connecting piece 73, and then the chassis 71 drives the second connecting piece 74 to push the ejector plate 72 to move upward, thereby ejecting the stamped workpiece 8.

[0046] The difference between this embodiment and the previous embodiment is that the third driving component can also be a cylinder. The cylinder is installed at the lower end of the frame 1 and its output end is connected to the ejector plate 72 to drive the ejector plate 72 to rise and fall.

[0047] The working principle of this invention is as follows: First, the workpiece 8 is placed outside the positioning member 6. Then, based on the number and position of holes to be punched on the outer circumference of the workpiece 8, it can be determined how many punching forces need to be applied simultaneously to complete the punching task. The force of the punching force is analyzed, and then the force direction and magnitude of the force applied to the workpiece 8 are adjusted by the balancing device 2 to make the entire workpiece 8 be balanced during punching. Then, the upper template 4 is lowered, which drives the upper wedge 31 to be lowered and pushes the lower wedge 32 to drive the punching head 33 to punch holes on the outer circumference of the workpiece 8. After punching is completed, the upper template 4 is raised, which drives the upper wedge 31 to move upward. Then, the lower wedge 32 is reset by the reset member. At the same time, the ejector plate 72 drives the workpiece 8 to move upward, so that the stamped workpiece 8 can be taken out.

[0048] The above description is only a preferred embodiment of the present invention, but the scope of protection of the present invention is not limited thereto. Any equivalent substitutions or modifications made by those skilled in the art within the scope of the technology disclosed in the present invention, based on the technical solution and inventive concept of the present invention, should be covered within the scope of protection of the present invention.

Claims

1. A stamping device for balancing the forces on a workpiece, characterized in that, It includes a frame (1), a stamping mechanism, a positioning mechanism, and a balancing mechanism (2); the stamping mechanism is mounted on the frame (1) to stamp the workpiece (8); the positioning mechanism is mounted on the frame (1) to fix the workpiece (8) during stamping; the balancing mechanism (2) is slidably mounted on the frame (1) to adjust the direction and / or magnitude of the force applied to the workpiece (8) so that the workpiece (8) is balanced by force during the stamping process. The frame (1) is provided with a circular slide (21) centered on the workpiece (8), and the circular slide (21) is slidably connected to a slide block (22); the balancing mechanism (2) includes a fourth driving member (23) and a pusher (24), the fourth driving member (23) is mounted on the slide block (22), and the output end of the fourth driving member (23) is fixedly connected to the pusher (24); The stamping mechanism includes a first driving member and a stamping head (33). The first driving member is mounted on the frame (1) and its output end is fixedly connected to the stamping head (33). A vertically adjustable upper plate (4) is installed above the frame (1), and the upper plate (4) is connected to the frame (1) through a second drive component (10); The first driving component includes an upper wedge (31) and a lower wedge (32). The lower wedge (32) has a flat shape that matches the lateral coplanar portion of the upper wedge (31) and is connected to the upper wedge (31) along a part of the flat shape. The upper wedge (31) is installed below the upper end plate (4). The lower wedge (32) is installed on the frame (1) and connected to the stamping head (33). The upper wedge (31) moves vertically downward to push the lower wedge (32) to move linearly so as to drive the stamping head (33) to stamp the workpiece (8). One end of the upper wedge (31) is connected to the frame (1) through a reset component so that the lower wedge (32) is reset after the stamping is completed. The balancing mechanism (2) also includes a rotary motor, which is installed below the frame (1) and located at the center of the circular slide (21). The output shaft of the rotary motor is connected to the bottom of the slide (22) to drive the push head (24) to rotate. A displacement sensor is provided below the telescopic end of the fourth drive member (23). The force applied by the pusher (24) to the workpiece (8) can be adjusted by adjusting the extension length of the telescopic end.

2. The stamping device for balancing the forces on a workpiece as described in claim 1, characterized in that, The stamping mechanism is provided with a first limiting member on the stamping path toward the workpiece (8) processing position. The first limiting member includes a slide rail that is slidably connected to the lower wedge block (32). The tail end of the slide rail is toward the workpiece (8) to be processed position.

3. The press device for balancing forces on a workpiece of claim 2, wherein, It also includes a second limiting member (5), which is mounted on the frame (1) and located on the stamping path. The second limiting member (5) has a limiting through hole. The lower wedge (32) has a groove on the side facing the workpiece (8). The output shaft that is engaged in the groove is connected to the stamping head (33) through the limiting through hole.

4. The press apparatus of claim 1 wherein, It also includes an ejection mechanism, which includes an ejection plate (72), a base plate (71), a first connector (73), and a second connector (74). The base plate (71) is located below the frame (1) and is connected to the upper end plate (4) through the first connector (73). The two ends of the second connector (74) are connected to the ejection plate (72) and the base plate (71) respectively. The ejection plate (72) is movably installed on the frame (1) and located below the workpiece (8). After stamping, the workpiece (8) is moved upward by the ejection plate (72).

5. The press apparatus for balancing forces on a workpiece of claim 1, wherein, The positioning mechanism includes a positioning seat (6), which is mounted on a frame located inside the workpiece (8) and close to the inner wall of the workpiece (8). The positioning seat (6) has a stamping through hole corresponding to the stamping part of the workpiece (8).

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