Follow-up material supporting positioning mechanism for bending sheet metal parts

Abstract

The present application relates to sheet metal processing technical field, specifically disclose a follow-up type material supporting positioning mechanism for sheet metal bending, comprising: two upper and lower parallel arrangement of the sun-shaped frame, and multiple columns are arranged between the two sun-shaped frames;Static die assembly, set in the top of the sun-shaped frame located above;Two limit rods are arranged between the opposite sides of the sun-shaped frame located below, two slidingly arranged between the limit rods two horizontal moving seat;Self-locking telescopic rod group, articulated in the low order department top of horizontal moving seat, two two distribution in the two sides of static die assembly;Linkage structure, the self-locking telescopic rod group realizes self-locking through linkage structure.This application realizes the automatic centering positioning of different width sheet metal parts, realizes the follow-up rising and step-by-step self-locking of lifting rod in the process of sheet metal bending, realizes the convenient synchronous reset of self-locking telescopic rod group, reduces the labor cost, improves the bending forming effect and product precision.

Description

Technical Field

[0001] This invention relates to the field of sheet metal processing technology, and more specifically to a follow-up material support and positioning mechanism for bending sheet metal parts. Background Technology

[0002] In the sheet metal processing industry, bending is a common processing step, widely used in the production of automotive body panels, chassis and cabinets, and appliance housings. With the development of high-end equipment manufacturing, high-quality lightweight, high-strength materials such as aluminum alloy sheets, magnesium, copper, and titanium are increasingly used in aerospace, new energy vehicles, electronic communications, and precision structural components. The bending process for these materials places higher demands on clamping accuracy, surface quality, and positioning follow-up.

[0003] Chinese Patent (CN223988921U) discloses a bending device for sheet metal processing, including a base. A support frame is fixedly connected to the top of the base. Two hydraulic push rods, symmetrically distributed from left to right, are fixedly connected inside the support frame. The bottoms of the two hydraulic push rods are fixedly connected to a fixed frame. A rotating device is provided inside the fixed frame. A connecting plate is connected to the outside of the rotating device via a threaded drive. A mounting plate is fixedly connected to the bottom of the connecting plate. A bending knife is fixedly connected inside the mounting plate via fasteners. A second sliding plate is slidably connected inside the base. A fixing rod that penetrates through and extends to the outside of the base is fixedly connected to the top of the second sliding plate via fasteners.

[0004] However, the aforementioned technologies have some drawbacks, such as: 1. Manual positioning with high labor costs: When changing sheet metal parts of different widths, traditional fixtures require operators to manually adjust the position of the clamping mechanisms on both sides, relying on manual centering, which is not only time-consuming and labor-intensive, but also requires a high level of operational experience, thus increasing labor costs.

[0005] 2. Unstable clamping during bending, resulting in unsatisfactory bending effect: During the bending process of sheet metal parts, the workpiece will be displaced upwards. However, most existing fixtures are rigidly fixed and cannot adaptively adjust their height as the workpiece rises, causing changes in clamping force. The workpiece is prone to slippage or misalignment, affecting the bending forming effect and product accuracy. Summary of the Invention

[0006] To address the aforementioned problems in the prior art, this invention provides a follow-up material support and positioning mechanism for bending sheet metal parts, which can solve the problems mentioned in the background art.

[0007] The objective of this invention can be achieved through the following technical solutions: Follow-up material positioning mechanism for bending sheet metal parts includes: Two parallel sun-shaped frames are arranged vertically, and multiple columns are provided between the two sun-shaped frames; The static mold assembly is located at the top of the upper H-shaped frame; Two limiting rods are provided between the two opposing sides of the lower H-shaped frame, and two transverse sliding seats are slidably arranged between the two limiting rods. A driving mechanism is provided at the top of the lower H-shaped frame to drive the two transverse sliding seats to slide towards or away from each other. The self-locking telescopic rod assembly is hinged to the top of the lower step of the transverse shift seat and distributed in pairs on both sides of the static mold assembly. The self-locking telescopic rod assembly includes a sleeve and a lifting rod. The lifting rod is slidably sleeved in the sleeve. A first damping hinge assembly is provided between the bottom end of the sleeve and the adjacent transverse shift seat. A limit tube assembly is provided between the two sets of self-locking telescopic rod assemblies located on the same side of the static mold assembly. The self-locking telescopic rod assembly achieves self-locking telescopic extension through a linkage structure. The follow-up clamp is hinged to the top shaft end of the self-locking telescopic rod assembly.

[0008] Preferably, the stationary mold assembly includes: a mold base, which is mounted on the top of the upper H-shaped frame and is located in the middle of the H-shaped frame, and the stationary mold is assembled on the top of the mold base by fasteners.

[0009] Preferably, the top of the mold base is provided with an assembly groove, and the length of the stationary mold is less than the length of the assembly groove of the mold base, so that the position can be adjusted along the assembly groove.

[0010] Preferably, the driving mechanism includes a double-rod hydraulic cylinder, which is located at the top of the middle position of the lower H-shaped frame, and the two output shaft ends of the double-rod hydraulic cylinder are respectively fixedly connected to the adjacent transverse sliding seat.

[0011] Preferably, the limiting tube assembly includes a horizontal tube and a horizontal bar, which are slidably sleeved together and respectively connected between two lifting rods on the same side of the static mold assembly.

[0012] Preferably, the linkage structure includes: a toggle member rotatably mounted on the side wall of the lifting rod; the toggle member includes an integrally connected hinge portion and a movable portion; a travel groove is provided on one side of the sleeve, forming a closed loop path; a follower rod is installed on the movable portion of the toggle member; the travel groove is sequentially composed of an upward toothed groove portion, a first tangential portion, a downward portion, and a second tangential portion; wherein the inner wall of the toothed groove portion is provided with a one-way limiting tooth for cooperating with the follower rod to achieve step-by-step locking; a wire groove is provided on the outer wall of the hinge portion of the toggle member; a slot is provided on the outer wall of the hinge portion of the toggle member; a support column is provided on the side wall of the lifting rod; a limiting spring is engaged at the end of the support column; the first tangential portion and the second tangential portion are used to switch the position of the limiting spring between the wire groove and the slot.

[0013] Preferably, when the lifting rod rises, the follower rod slides along the toothed groove and, under the action of gravity and the limiting spring, it is unidirectionally locked into the toothed groove of the stroke groove, preventing descent and forming a self-locking mechanism. At this time, one end of the limiting spring is at the center of the angle between the angle between it and the guide groove.

[0014] Preferably, when the lifting rod descends, the follower top rod contacts and slides along the lower part of the stroke groove, at which time one end of the limiting spring is engaged in the slot.

[0015] Preferably, the follow-up clamp includes: a support base, an electric parallel gripper is provided on the inner wall of the support base for clamping sheet metal parts, and a second damping hinge assembly is provided between the bottom end of the support base and the top end of the lifting rod.

[0016] The beneficial effects of this invention are as follows: 1. By setting up two transverse sliding seats driven by a double-rod hydraulic cylinder to slide towards or away from each other along the limiting rod, and making the self-locking telescopic rod group and follow-up fixtures hinged to the top of the transverse sliding seats move synchronously, the two output shaft ends of the double-rod hydraulic cylinder extend and retract synchronously, ensuring that the fixtures on both sides move symmetrically, so that the center of the sheet metal part is always aligned with the center of the stationary mold, without the need for manual adjustment, significantly improving positioning accuracy and production efficiency, and adapting to the flexible processing needs of sheet metal parts of various specifications; The resulting technical effect is that it enables automatic centering and positioning of sheet metal parts of different widths.

[0017] 2. By setting up a linkage self-locking structure consisting of a stroke groove, a follower push rod, a toggle component, and a limiting spring, and setting an upward toothed groove, a first tangential part, a downward part, and a second tangential part in the stroke groove, when the sheet metal part is bent and pushes the electric parallel gripper to rise, the follower push rod slides along the toothed groove and, under the combined action of gravity and the limiting spring, it is locked into the toothed groove in one direction, preventing the lifting rod from falling. It can stably self-lock at any height without external power, ensuring that the sheet metal part remains stable after bending and effectively preventing springback. The technical benefits achieved are: the lifting rod can move up and lock step by step during the bending process of sheet metal parts, which reduces labor costs and improves bending and forming effect and product precision.

[0018] 3. By setting up a limiting tube assembly consisting of a horizontal tube and a horizontal bar that are slidably connected, and cooperating with the first tangential part and the second tangential part, the operator holds the horizontal tube and pulls it upward, which drives the two lifting rods on the same side to rise synchronously, so that the follower top rod disengages from the tooth groove. After switching to the downward part through the first tangential part, the lifting rod automatically descends and resets under the action of gravity. After switching back to the upward tooth groove part through the second tangential part, it returns to the self-locking standby state. This design does not require the aid of tools or additional power, and the operation is simple and quick, improving the efficiency and convenience of clamp reset after bending operations. The technical effect achieved is that it enables convenient synchronous reset of the self-locking telescopic rod assembly. Attached Figure Description

[0019] To facilitate understanding by those skilled in the art, the present invention will be further described below with reference to the accompanying drawings.

[0020] Figure 1 This is a schematic diagram of the overall structure of the present invention; Figure 2 This is a diagram showing the initial positioning state of the overall mechanism and sheet metal parts in this invention; Figure 3 This is a structural diagram of the static mold assembly and the H-shaped frame in this invention; Figure 4 This is an installation structure diagram of the self-locking telescopic rod assembly and the transverse sliding seat in this invention; Figure 5 This is a diagram showing the tension and self-locking state of the self-locking telescopic rod assembly in this invention. Figure 6 This is a diagram showing the retracted state of the self-locking telescopic rod assembly in this invention; Figure 7 This is a structural diagram of the installation of the limiting spring and the actuating element in this invention; Figure 8 This is a diagram showing the installation structure of the actuating element, wire groove, and card slot in this invention.

[0021] Explanation of reference numerals in the attached figures: 1. Sun-shaped frame; 2. Upright column; 11. Mold base; 12. Static mold; 21. Limiting rod; 22. Lateral sliding seat; 23. Double-rod hydraulic cylinder; 31. Sleeve; 32. Lifting rod; 33. Support base; 34. Electric parallel gripper; 35. First damping hinge assembly; 36. Second damping hinge assembly; 41. Stroke groove; 42. Actuator; 43. Follower push rod; 44. Wire groove; 45. Slot; 46. Support column; 47. Limiting spring; 51. Horizontal tube; 52. Horizontal bar. Detailed Implementation

[0022] To further illustrate the technical means and effects adopted by the present invention to achieve its intended purpose, the specific implementation methods, structures, features, and effects of the present invention will be clearly and completely described below in conjunction with the accompanying drawings and preferred embodiments. Obviously, the described embodiments are only a part of the embodiments of the present invention, and not all of them. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0023] In the description of this application, it should be understood that the orientation or positional relationship indicated by terms such as "inner" and "outer" are based on the orientation or position shown in the accompanying drawings, and are only for the convenience of describing this application and simplifying the description, and are not intended to indicate or imply that the device or element referred to must have a specific orientation, or a specific orientational structure and operation, and therefore should not be construed as a limitation of this application.

[0024] Example 1: Reference Figures 1-8 The present invention discloses a follow-up material support and positioning mechanism for bending sheet metal parts, comprising: In order to achieve basic frame support and structural stability of the equipment, in this embodiment: two parallel vertically arranged H-shaped frames 1 are provided, and multiple columns 2 are provided between the two H-shaped frames 1.

[0025] To achieve the fixing and position adjustment of the bending die, in this embodiment: a stationary die assembly is set at the top of the upper H-shaped frame 1. The stationary die assembly includes: a die base 11, which is installed at the top of the upper H-shaped frame 1 and is located in the middle of the H-shaped frame 1. A stationary die 12 is assembled at the top of the die base 11 by fasteners. An assembly groove is provided at the top of the die base 11. The length of the stationary die 12 is less than the length of the assembly groove of the die base 11, and the position is adjusted along the assembly groove.

[0026] To provide sliding guide support, in this embodiment: two limiting rods 21 are provided between the opposing sides of the lower H-shaped frame 1, and two transverse sliding seats 22 are slidably arranged between the two limiting rods 21. A driving mechanism is provided at the top of the lower H-shaped frame 1 to drive the two transverse sliding seats 22 to slide towards or away from each other. The driving mechanism includes: a double-rod hydraulic cylinder 23, which is located at the top of the middle position of the lower H-shaped frame 1. The two output shaft ends of the double-rod hydraulic cylinder 23 are respectively fixedly connected to the adjacent transverse sliding seats 22.

[0027] To achieve follow-up support for the sheet metal parts, in this embodiment: self-locking telescopic rod assemblies are hinged to the top of the lower step of the transverse seat 22 and distributed in pairs on both sides of the stationary mold assembly. The self-locking telescopic rod assembly includes: a sleeve 31 and a lifting rod 32. The lifting rod 32 is slidably sleeved in the sleeve 31. A first damping hinge assembly 35 is provided between the bottom end of the sleeve 31 and the adjacent transverse seat 22. A limit tube assembly is provided between the two sets of self-locking telescopic rod assemblies on the same side of the stationary mold assembly. The limit tube assembly includes: a horizontal tube 51 and a horizontal rod 52, which are slidably sleeved and respectively connected between the two lifting rods 32 on the same side of the stationary mold assembly.

[0028] To achieve step-by-step locking and unlocking control of the self-locking telescopic rod assembly, in this embodiment: a linkage structure is used. The self-locking telescopic rod assembly achieves self-locking extension and retraction through a linkage structure. The linkage structure includes: a toggle member 42, rotatably mounted on the side wall of the lifting rod 32. The toggle member 42 includes an integrally connected hinge part and a movable part. The movable part of the toggle member 42 is equipped with a follower rod 43. One side of the sleeve 31 is provided with a travel groove 41, forming a closed loop path. The travel groove 41 is sequentially composed of an upward toothed groove part, a first tangential part, a downward part, and a second tangential part. The inner wall of the toothed groove part is provided with a one-way limiting tooth for cooperating with the follower rod 43 to achieve step-by-step locking. The outer wall of the hinge part of the toggle member 42 is provided with... The guide rail 44 has a slot 45 on the outer wall of the hinge part of the actuating member 42, and a support column 46 on the side wall of the lifting rod 32. The end of the support column 46 is fitted with a limiting spring piece 47. When the lifting rod 32 rises, the follower rod 43 slides along the toothed part and, under the action of gravity and the limiting spring piece 47, it is unidirectionally engaged in the toothed groove of the stroke groove 41 to prevent descent and form a self-locking mechanism. At this time, one end of the limiting spring piece 47 is at the center of the angle between the guide rail 44 and the guide rail 44. When the lifting rod 32 falls, the follower rod 43 adheres to the guide rail and slides along the downward part of the stroke groove 41. At this time, one end of the limiting spring piece 47 is engaged in the slot 45. The first tangential part and the second tangential part are used to switch the position of the limiting spring piece 47 between the guide rail 44 and the slot 45.

[0029] In order to achieve clamping, fixing and follow-up adjustment of sheet metal parts, in this embodiment: a follow-up clamp is hinged to the top shaft end of the self-locking telescopic rod assembly. The follow-up clamp includes: a support base 33, an electric parallel gripper 34 is provided on the inner wall of the support base 33 for clamping sheet metal parts, and a second damping hinge assembly 36 is provided between the bottom end of the support base 33 and the top end of the lifting rod 32.

[0030] The working principle and usage process of this invention: The working principle of this sheet metal processing fixture device is based on the collaborative mechanism of "lateral centering - follow-up lifting self-locking - tangential reset", which realizes precise positioning of sheet metal parts of different sizes, adaptive height adjustment during bending process and convenient reset.

[0031] First, the double-rod hydraulic cylinder 23 drives the two transverse sliding seats 22 to slide towards or away from each other along the limiting rod 21, so that the self-locking telescopic rod assembly and the top follower clamp are aligned according to the width of the sheet metal part, ensuring that the center of the sheet metal part is aligned with the center of the stationary mold 12. During the bending process of the sheet metal part, the sheet metal part generates an upward displacement that pushes the support seat 33. The electric parallel gripper 34 rises synchronously with the sheet metal part, and drives the lifting rod 32 to slide upward along the sleeve 31 through the second damping hinge assembly 36. The follower push rod 43 slides along the upper toothed groove of the stroke groove 41. Under the combined action of gravity and the limiting spring 47, the one-way limiting teeth on the inner wall of the toothed groove cause the follower push rod 43 to be locked into the toothed groove step by step, preventing the lifting rod 32 from descending, realizing high self-locking during the bending process, and ensuring that the sheet metal part maintains a stable posture after bending. When resetting is required after bending, the operator holds the horizontal tube 51 and pulls it upwards. The horizontal tube 51, through the connected horizontal bar 52, drives the two lifting rods 32 on the same side to rise synchronously a certain distance, causing the follower rod 43 to disengage from its current toothed position. Then, the actuating component 42 rotates, and the follower rod 43 switches to the downward section via the first tangential section. At this time, the lifting rod 32 automatically descends and resets under gravity. One end of the limiting spring 47 is locked into the slot 45 to maintain the unlocked state. After the lifting rod 32 descends to its initial position, the follower rod 43 switches back to the upward toothed section via the second tangential section, restoring the self-locking standby state. Through the above coordinated operation, the device realizes the follower-up self-locking and convenient tangential reset operation during the bending process of sheet metal parts, providing an efficient and reliable clamping solution for sheet metal processing.

[0032] The above description is merely a preferred embodiment of the present invention and is not intended to limit the present invention in any way. Although the present invention has been disclosed above with reference to preferred embodiments, it is not intended to limit the present invention. Any person skilled in the art can make some modifications or alterations to the above-disclosed technical content to create equivalent embodiments without departing from the scope of the present invention. Any modifications, equivalent changes, and alterations made to the above embodiments based on the technical essence of the present invention without departing from the scope of the present invention shall still fall within the scope of the present invention.

Claims

1. A follow-up material support and positioning mechanism for bending sheet metal parts, characterized in that, include: Two parallel sun-shaped frames (1) are arranged vertically, and multiple columns (2) are provided between the two sun-shaped frames (1). A static mold assembly is located at the top of the upper sun-shaped frame (1); Two limiting rods (21) are provided between the two opposing sides of the lower sun-shaped frame (1), and two transverse sliding seats (22) are slidably provided between the two limiting rods (21). A driving mechanism is provided at the top of the lower sun-shaped frame (1) to drive the two transverse sliding seats (22) to slide towards or away from each other. The self-locking telescopic rod assembly is hinged to the top of the lower step of the transverse shift seat (22) and distributed in pairs on both sides of the static mold assembly. The self-locking telescopic rod assembly includes: a sleeve (31) and a lifting rod (32). The lifting rod (32) is slidably sleeved in the sleeve (31). A first damping hinge assembly (35) is provided between the bottom end of the sleeve (31) and the adjacent transverse shift seat (22). A limit tube assembly is provided between the two sets of self-locking telescopic rod assemblies located on the same side of the static mold assembly. The self-locking telescopic rod assembly achieves self-locking telescopic extension through a linkage structure. The follow-up clamp is hinged to the top shaft end of the self-locking telescopic rod assembly.

2. The follow-up material positioning mechanism for bending sheet metal parts according to claim 1, characterized in that, The static mold assembly includes: a mold base (11), which is installed on the top of the upper-mounted frame (1) and is located in the middle of the frame (1), and the top of the mold base (11) is fitted with a static mold (12) by fasteners.

3. The follow-up material support and positioning mechanism for bending sheet metal parts according to claim 2, characterized in that, The top of the mold base (11) is provided with an assembly groove. The length of the stationary mold (12) is less than the length of the assembly groove of the mold base (11), and the position is adjusted along the assembly groove.

4. The follow-up material positioning mechanism for bending sheet metal parts according to claim 1, characterized in that, The drive mechanism includes a double-rod hydraulic cylinder (23), which is located at the top of the middle position of the lower H-shaped frame (1), and the two output shaft ends of the double-rod hydraulic cylinder (23) are respectively fixedly connected to the adjacent transverse sliding seat (22).

5. The follow-up material positioning mechanism for bending sheet metal parts according to claim 1, characterized in that, The limiting tube assembly includes a horizontal tube (51) and a horizontal bar (52), which are slidably connected and respectively connected between two lifting bars (32) on the same side of the static mold assembly.

6. The follow-up material support and positioning mechanism for bending sheet metal parts according to claim 1, characterized in that, The linkage structure includes: a toggle member (42), rotatably mounted on the side wall of the lifting rod (32), the toggle member (42) including an integrally connected hinge part and a movable part, a stroke groove (41) is provided on one side of the sleeve (31) forming a closed loop path, the movable part of the toggle member (42) is equipped with a follower rod (43), the stroke groove (41) is composed of an upward toothed groove part, a first tangential part, a downward part and a second tangential part in sequence, wherein the inner wall of the toothed groove part is provided with a one-way limiting tooth. For use in conjunction with the follower rod (43) to achieve step-by-step locking, the outer wall of the hinge part of the actuating member (42) is provided with a wire groove (44), the outer wall of the hinge part of the actuating member (42) is provided with a slot (45), the side wall of the lifting rod (32) is provided with a support column (46), and the end of the support column (46) is provided with a limiting spring (47). The first tangential part and the second tangential part are used to switch the position of the limiting spring (47) between the wire groove (44) and the slot (45).

7. The follow-up material positioning mechanism for bending sheet metal parts according to claim 6, characterized in that, When the lifting rod (32) rises, the follower rod (43) slides along the toothed part and, under the action of gravity and the limiting spring (47), it is unidirectionally locked into the toothed groove of the stroke groove (41), preventing descent and forming a self-locking. At this time, one end of the limiting spring (47) is at the center of the angle between the guide rail groove (44).

8. The follow-up material positioning mechanism for bending sheet metal parts according to claim 6, characterized in that, When the lifting rod (32) descends, the follower rod (43) comes into contact with and slides along the lower part of the stroke groove (41), at which time one end of the limiting spring (47) is inserted into the slot (45).

9. The follow-up material positioning mechanism for bending sheet metal parts according to claim 1, characterized in that, The follow-up clamp includes: a support base (33), an electric parallel gripper (34) is provided on the inner wall of the support base (33) for clamping sheet metal parts, and a second damping hinge assembly (36) is provided between the bottom end of the support base (33) and the top end of the lifting rod (32).

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