Automatic correction mechanism in bending die
The automatic correction mechanism in bending molds uses a servo motor and inclined wedge surfaces to adjust bending angles automatically, addressing material inconsistencies and reducing manual mold adjustments, ensuring high-precision bending.
Patent Information
- Application Number
- CN202420624199.4
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-03-28
- Publication Date
- 2024-12-13
- Estimated Expiration
- 2034-03-28
AI Technical Summary
Existing bending molds struggle with fluctuations in material properties such as thickness, hardness, and tensile strength, leading to inconsistent bending angles and the need for frequent disassembly and adjustment, which is costly and inefficient.
An automatic correction mechanism using a servo motor to adjust the bending angle through a slider, with a monitoring module to sense the distance of the bent part and a correction module that uses bottom blocks with inclined wedge surfaces to offset deformation, allowing real-time adjustment.
Enables precise, real-time adjustment of bending angles, reducing the need for manual mold adjustments and minimizing the impact of material variations, while maintaining high-precision bending angles.
Smart Images
Figure CN222153503U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the field of bending dies, in particular to an automatic correction mechanism in a bending die. Background Art
[0002] The workshop needs to bend iron materials with a thickness of 3.0mm. The main steps are to bend at 45° and then 90°, and then add a side slider to adjust the slight change of the bending angle during production to avoid excessive contour of the product bending surface and poor product size. Because of fluctuations in physical properties such as material thickness, hardness, and tensile strength, the bending effect may not meet the requirements and there may be slight rebound. In this case, the mold needs to be disassembled and adjusted, and the entire machine adjustment will cause large losses. Utility Model Content
[0003] The problem to be solved by the utility model is to provide an automatic correction mechanism in the bending mold, which adopts a servo motor to connect a slider, and senses the distance of a certain part of the bent part to know whether the size is accurate after bending, and uses the bottom block for secondary extrusion to offset the outward rebound deformation of the bent part.
[0004] In order to solve the above problems, the utility model provides an automatic correction mechanism in the bending die. In order to achieve the above purpose, the technical solution adopted by the utility model to solve its technical problems is:
[0005] The automatic correction mechanism in the bending mold includes: a guide beam, which supports the bent part and guides the bent part to be transmitted in the mold; a monitoring module, which is arranged on the side of the guide beam and senses the distance between itself and the bent part; a correction module, which extrude and shape the bent part; the correction module includes a servo motor and a bottom block, a pair of bottom blocks are symmetrically distributed on both sides of the guide beam, the mold has a guide rod inserted into the bottom block, the bottom block and the guide rod are movably assembled and have horizontal translation freedom along the guide rod; the servo motor outputs linear power through the internal threaded hole, and the surface of the bottom block itself is provided with an inclined wedge surface, which decomposes the linear power into an extrusion force of the bottom block in the horizontal direction toward the bent part.
[0006] The beneficial effect of adopting the above technical solution is: this process adopts a servo motor to connect the adjustment slider, and sets a precision sensing head at the front workstation to sense the external tensor of the bending surface. According to the set corresponding logical relationship, the microcomputer controls the feed amount of the servo motor to change the front and rear position of the bottom block, thereby shaping the bent part, or not shaping it, or shaping it to different degrees, to achieve real-time automatic adjustment of the bending angle of the bent part.
[0007] This mechanism is suitable for stamping dies with high-precision bending angle requirements. It can ignore the impact of material changes on dimensions, save mold adjustment costs, and has strong overall practicality.
[0008] The inclined wedge surface facilitates amplifying the force component in the horizontal direction. This technical solution is particularly suitable for once again extruding the bent metal part inward to offset the springback of the bent part.
[0009] As a further improvement of the utility model, the bending part includes a horizontal slat, and the two side edges of the horizontal slat are integrally connected with vertical slats extending vertically downward; the bottom surface of the horizontal slat is in contact with the top surface of the guide rail beam, and the vertical slats are located on both sides of the guide rail beam.
[0010] The beneficial effect of adopting the above technical solution is that the bending machine is in the form of a bottom opening, and it can sit on the guide rail beam more stably.
[0011] As a further improvement of the utility model, the cross-sectional profile of the guide rail beam has an inverted trapezoid which is wide at the top and narrow at the bottom. The inverted trapezoid is also an isosceles trapezoid, and a gap is formed between the waist of the inverted trapezoid and the vertical slats.
[0012] The beneficial effect of adopting the above technical solution is that the inverted trapezoidal shape of the guide rail beam is to provide a spatial path for the bottom block to be squeezed, otherwise the guide rail beam completely resists the bending part, and the bending part lacks space for retraction.
[0013] As a further improvement of the utility model, the servo motor contacts the bottom block through the horizontal rod and the vertical rod in sequence, the output shaft of the servo motor itself is arranged horizontally, and the vertical rod has an internal threaded hole movably assembled with the output rod of the servo motor.
[0014] The beneficial effect of adopting the above technical solution is that the linear power output by the servo motor is first transmitted horizontally, then transmitted vertically, and finally converted into horizontal work.
[0015] As a further improvement of the utility model, the servo motor is located outside the mold, and the horizontal rod, the vertical rod and the bottom block are located inside the mold.
[0016] The beneficial effect of adopting the above technical solution is that the internal horizontal rods, vertical rods and bottom blocks can be easily limited to ensure that they have only one mechanical degree of freedom.
[0017] As a further improvement of the utility model, the end of the horizontal rod facing away from the servo motor has a first inclined wedge surface, the top and bottom of the vertical rod itself have a second inclined wedge surface and a third inclined wedge surface respectively, and the inclined wedge surface on the surface of the bottom block itself is a fourth inclined wedge surface; the first inclined wedge surface and the second inclined wedge surface are parallel to each other and form a surface contact, and the third inclined wedge surface and the fourth inclined wedge surface are parallel to each other and form a surface contact.
[0018] The beneficial effect of adopting the above technical solution is that force decomposition is achieved between the inclined surfaces.
[0019] As a further improvement of the present invention, the angle between the first inclined wedge surface and the horizontal plane is smaller than the angle between the third inclined wedge surface and the horizontal plane.
[0020] The beneficial effect of adopting the above technical solution is that the combination of two inclined wedge surfaces of different degrees can amplify the final horizontal extrusion force of the bottom block, and relatively lower the power requirement for the servo motor.
[0021] As a further improvement of the utility model, the length of the first inclined wedge surface along its own oblique direction is greater than the length of the second inclined wedge surface along its own oblique direction, and the length of the third inclined wedge surface along its own oblique direction is greater than the length of the fourth inclined wedge surface along its own oblique direction.
[0022] The beneficial effect of adopting the above technical solution is that the inclined wedge surface is longer to ensure sufficient movement distance and avoid separation of the movable blocks from each other.
[0023] As a further improvement of the utility model, the bottom block has a blind hole for movable assembly with the guide rod; the end of the bottom block away from the vertical rod is integrally protruded with a forward extension section, and the outer wall of the forward extension section itself has a convex surface in contact with the vertical slats.
[0024] The beneficial effect of adopting the above technical solution is that since the reaction force on the bottom block is also relatively large, the horizontal movement limitation is achieved by using blind holes and guide rods, which can withstand a large reaction force without deviating.
[0025] As a further improvement of the utility model, the fourth inclined wedge surface and the forward extension section are respectively arranged at two ends of the automatic top of the bottom block.
[0026] The beneficial effect of adopting the above technical solution is that a certain distance is provided between the working end and the power receiving end of the bottom block to avoid mutual interference. BRIEF DESCRIPTION OF THE DRAWINGS
[0027] In order to more clearly illustrate the embodiments of the utility model or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the utility model. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.
[0028] Figure 1 It is a top view of a bending part in one embodiment of the utility model;
[0029] Figure 2 It is a vertical cross-sectional view of a bending part in one embodiment of the utility model;
[0030] Figure 3 It is a structural schematic diagram of a monitoring module according to one embodiment of the utility model;
[0031] Figure 4 It is a structural schematic diagram of a correction module according to one embodiment of the utility model;
[0032] Figure 5 It is an exploded view of a correction module according to one embodiment of the utility model.
[0033] 1-servo motor; 2-horizontal rod; 21-internal threaded hole; 22-first inclined wedge surface; 3-vertical rod; 31-second inclined wedge surface; 32-third inclined wedge surface; 4-bottom block; 41-fourth inclined wedge surface; 42-convex curved surface; 43-forward extension section; 44-blind hole; 5-bending part; 51-horizontal slat; 52-vertical slat; 6-guide beam; 61-inward inclined surface; 7-gap; 8-sensing head; 9-guide rod; 10-mold. DETAILED DESCRIPTION
[0034] The following is a further detailed description of the present invention in conjunction with specific embodiments:
[0035] In order to achieve the purpose of the utility model, the automatic correction mechanism in the bending mold includes: a guide beam 6, which supports the bending part 5 and guides the bending part 5 to be transmitted in the mold 10; a monitoring module, which is arranged on the side of the guide beam 6 and senses the distance between itself and the bending part 5; a correction module, which extrude and shape the bending part 5; the correction module includes a servo motor 1 and a bottom block 4, a pair of bottom blocks 4 are symmetrically distributed on both sides of the guide beam 6, and the mold 10 has a guide rod 9 inserted into the bottom block 4, and the bottom block 4 is movably assembled with the guide rod 9 and has horizontal translation freedom along the guide rod 9; the servo motor 1 outputs linear power through the internal threaded hole 21, and the surface of the bottom block 4 itself has an inclined wedge surface, which decomposes the linear power into an extrusion force of the bottom block 4 toward the bending part 5 in the horizontal direction.
[0036] The beneficial effects of adopting the above technical solution are: this process uses a servo motor to connect the adjustment slider, and sets a precision sensor head at the front station to sense the external tensor of the bending surface. According to the set corresponding logical relationship, the microcomputer controls the servo motor feed amount to change the front and rear position of the bottom block, thereby shaping the bent part, or not shaping it, or shaping it to different degrees, to achieve real-time automatic adjustment of the bending angle of the bent part. This mechanism is suitable for stamping dies with high-precision bending angle requirements. The effect of material changes on the size can be ignored, the cost of mold adjustment can be saved, and the overall practicality is strong. The inclined wedge surface is convenient for amplifying the horizontal force component. This technical solution is particularly suitable for once again squeezing the bent metal parts inward to offset the rebound of the bent parts.
[0037] like Figure 2As shown, in other embodiments of the utility model, the bending part 5 includes a horizontal slat 51, and the two side edges of the horizontal slat 51 are integrally connected with vertical slats 52 extending vertically downward; the bottom surface of the horizontal slat 51 contacts the top surface of the guide rail beam 6, and the vertical slats 52 are located on both sides of the guide rail beam 6.
[0038] The beneficial effect of adopting the above technical solution is that the bending machine is in the form of a bottom opening, and it can sit on the guide rail beam more stably.
[0039] In other embodiments of the present invention, the cross-sectional profile of the guide rail beam 6 is an inverted trapezoid that is wide at the top and narrow at the bottom. The inverted trapezoid is also an isosceles trapezoid, and a gap 7 is formed between the waist of the inverted trapezoid and the vertical slats 52 .
[0040] The beneficial effect of adopting the above technical solution is that the inverted trapezoidal shape of the guide rail beam is to provide a spatial path for the bottom block to be squeezed, otherwise the guide rail beam completely resists the bending part, and the bending part lacks space for retraction.
[0041] In other embodiments of the present invention, the servo motor 1 contacts the bottom block 4 through the horizontal rod 2 and the vertical rod 3 in sequence. The output shaft of the servo motor 1 is arranged horizontally, and the vertical rod 3 has an internal threaded hole 21 for movably assembling with the output rod of the servo motor 1.
[0042] The beneficial effect of adopting the above technical solution is that the linear power output by the servo motor is first transmitted horizontally, then transmitted vertically, and finally converted into horizontal work.
[0043] In some other embodiments of the present invention, the servo motor 1 is located outside the mold 10 , and the horizontal rod 2 , the vertical rod 3 , and the bottom block 4 are located inside the mold 10 .
[0044] The beneficial effect of adopting the above technical solution is that the internal horizontal rods, vertical rods and bottom blocks can be easily limited to ensure that they have only one mechanical degree of freedom.
[0045] In other embodiments of the utility model, the end of the horizontal rod 2 facing away from the servo motor 1 has a first inclined wedge surface 22, the top and bottom of the vertical rod 3 itself have a second inclined wedge surface 31 and a third inclined wedge surface 32 respectively, and the inclined wedge surface on the surface of the bottom block 4 itself is a fourth inclined wedge surface 41; the first inclined wedge surface 22 and the second inclined wedge surface 31 are parallel to each other and form a surface contact, and the third inclined wedge surface 32 and the fourth inclined wedge surface 41 are parallel to each other and form a surface contact.
[0046] The beneficial effect of adopting the above technical solution is that force decomposition is achieved between the inclined surfaces.
[0047] In some other embodiments of the present invention, the angle between the first inclined wedge surface 22 and the horizontal plane is smaller than the angle between the third inclined wedge surface 32 and the horizontal plane.
[0048] The beneficial effect of adopting the above technical solution is that the combination of two inclined wedge surfaces of different degrees can amplify the final horizontal extrusion force of the bottom block, and relatively lower the power requirement for the servo motor.
[0049] In other embodiments of the present invention, the length of the first inclined wedge surface 22 along its own oblique direction is greater than the length of the second inclined wedge surface 31 along its own oblique direction, and the length of the third inclined wedge surface 32 along its own oblique direction is greater than the length of the fourth inclined wedge surface 41 along its own oblique direction.
[0050] The beneficial effect of adopting the above technical solution is that the inclined wedge surface is longer to ensure sufficient movement distance and avoid separation of the movable blocks from each other.
[0051] In other embodiments of the present invention, the bottom block 4 has a blind hole 44 for movably assembling with the guide rod 9; the bottom block 4 has an integrally protruding forward section 43 at one end away from the vertical rod 3, and the outer wall of the forward section 43 has a convex curved surface 42 in contact with the vertical slats 52.
[0052] The beneficial effect of adopting the above technical solution is that since the reaction force on the bottom block is also relatively large, the horizontal movement limitation is achieved by using blind holes and guide rods, which can withstand a large reaction force without deviating.
[0053] In some other embodiments of the present invention, the fourth inclined wedge surface 41 and the forward extension section 43 are respectively arranged at two ends of the automatic top of the bottom block 4 .
[0054] The beneficial effect of adopting the above technical solution is that a certain distance is provided between the working end and the power receiving end of the bottom block to avoid mutual interference.
[0055] The angle between the first inclined wedge surface 22 and the horizontal plane is 3°, and the angle between the third inclined wedge surface 32 and the horizontal plane is 50°.
[0056] The two side surfaces of the guide rail beam 6 are provided with inwardly-retracted inclined surfaces 61 , which correspond to the waist of the inverted trapezoid.
[0057] like Figure 3 As shown, the monitoring module includes a sensing head 8 disposed on both sides of the guide rail beam 6. The sensing head 8 can be a photoelectric sensor.
[0058] The above embodiments are only for illustrating the technical concept and features of the utility model, and their purpose is to enable people familiar with this technology to understand the content of the utility model and implement it. They cannot be used to limit the protection scope of the utility model. All equivalent changes or modifications made according to the spirit of the utility model should be included in the protection scope of the utility model.
Claims
1. Automatic correction mechanism in the bending die, characterized in that: include: The guide beam holds the bent parts and guides them to be transferred in the mold; The monitoring module is located on the side of the guide rail beam and senses the distance between itself and the bending part; Correction module, which extrude and reshape the bent parts; The correction module includes a servo motor and a bottom block, a pair of bottom blocks are symmetrically distributed on both sides of the guide beam, the mold has a guide rod inserted into the bottom block, the bottom block and the guide rod are movably assembled and have horizontal translation freedom along the guide rod; the servo motor outputs linear power through the internal threaded hole, and the surface of the bottom block itself is provided with an inclined wedge surface, and the inclined wedge surface decomposes the linear power into a horizontal extrusion force of the bottom block toward the bending part.
2. The automatic correction mechanism in the bending die according to claim 1 is characterized in that: The bending part includes a horizontal slat, and both side edges of the horizontal slat are integrally connected with vertical slats extending vertically downward; the bottom surface of the horizontal slat is in contact with the top surface of the guide rail beam, and the vertical slats are located on both sides of the guide rail beam.
3. The automatic correction mechanism in the bending die according to claim 2 is characterized in that: The cross-sectional profile of the guide rail beam has an inverted trapezoid that is wide at the top and narrow at the bottom. The inverted trapezoid is also an isosceles trapezoid, and a gap is formed between the waist of the inverted trapezoid and the vertical slats.
4. The automatic correction mechanism in the bending die according to claim 1 is characterized in that: The servo motor contacts the bottom block through the horizontal rod and the vertical rod in sequence. The output shaft of the servo motor itself is arranged horizontally. The vertical rod is provided with an internal threaded hole for movable assembly with the output rod of the servo motor.
5. The automatic correction mechanism in the bending die according to claim 4 is characterized in that: The servo motor is located outside the mold, and the horizontal rod, the vertical rod and the bottom block are located inside the mold.
6. The automatic correction mechanism in the bending die according to claim 5 is characterized in that: The end of the horizontal rod facing away from the servo motor has a first inclined wedge surface, the top and bottom of the vertical rod itself have a second inclined wedge surface and a third inclined wedge surface respectively, and the inclined wedge surface on the surface of the bottom block itself is a fourth inclined wedge surface; the first inclined wedge surface and the second inclined wedge surface are parallel to each other and form a surface contact, and the third inclined wedge surface and the fourth inclined wedge surface are parallel to each other and form a surface contact.
7. The automatic correction mechanism in the bending die according to claim 6 is characterized in that: The angle between the first inclined wedge surface and the horizontal plane is smaller than the angle between the third inclined wedge surface and the horizontal plane.
8. The automatic correction mechanism in the bending die according to claim 6 is characterized in that: The length of the first inclined wedge surface along its own oblique direction is greater than the length of the second inclined wedge surface along its own oblique direction, and the length of the third inclined wedge surface along its own oblique direction is greater than the length of the fourth inclined wedge surface along its own oblique direction.
9. The automatic correction mechanism in the bending die according to claim 6, characterized in that: The bottom block is provided with a blind hole for movable assembly with the guide rod; the end of the bottom block away from the vertical rod is integrally protruded with a forward extension section, and the outer wall of the forward extension section itself is provided with a convex curved surface in contact with the vertical slats.
10. The automatic correction mechanism in the bending die according to claim 9, characterized in that: The fourth inclined wedge surface and the forward extension section are respectively arranged at two ends of the automatic top of the bottom block.