A traceless bending support mold device

Abstract

The application belongs to the technical field of medical devices, and particularly relates to a traceless bending support mold device, which comprises a steel block, arc-shaped strip grooves are formed on the top of the steel block, rotating blocks are arranged in the cavities of the strip grooves, the side walls of the rotating blocks are integrally formed with extension parts, the extension parts extend to the edges of the top of the steel block, sliding grooves are formed on the two side walls of the steel block, springs are arranged in the cavities of the sliding grooves, one end of each spring is fixedly connected with the extension part, and the tail end of each spring is connected with a pulling assembly arranged in the sliding groove. The strip grooves are formed on the top of the steel block, the rotating blocks are arranged in the strip grooves, and the rotating blocks are pulled by the springs, so that the rotating blocks rotate under the force when the workpiece is placed on the rotating blocks and then subjected to stamping, the rotating blocks and the workpiece form surface contact, the stability in the stamping process is improved, the workpiece outer wall is prevented from being folded, and the bending quality is improved.

Description

Technical Field

[0001] This invention relates to the field of sheet metal bending technology, specifically to a seamless bending support mold device. Background Technology

[0002] A CNC bending machine is a high-precision sheet metal forming machine designed for cold-rolled sheet metal processing. Using equipped general-purpose or special-purpose molds, it bends metal sheets into various geometric cross-sectional shapes while cold. The equipment typically consists of a frame, slide block, worktable, hydraulic system, and stop mechanism. Combined with components such as linear encoders, it achieves high-precision positioning, and the slide block's repeatability can reach a high level, significantly reducing bending errors. With its advantages of high precision, high efficiency, and flexible adaptability to various processing needs, it is widely used in many industries such as automotive, aircraft manufacturing, shipbuilding, elevators, and railway vehicles, and is an indispensable key piece of equipment for sheet metal bending in modern manufacturing.

[0003] In actual use, existing bending machines require the installation of a suitable support mold on the support base. Most existing support molds are simple steel blocks with a V-groove on the top. During use, the workpiece is placed on top of the steel block, and the punch head descends to apply pressure to the workpiece, causing it to be formed in the V-groove. However, existing workpieces have holes drilled in them before punching to meet requirements. Workpieces with holes are prone to creases under linear contact pressure when punched, making it difficult to perform crease-free bending.

[0004] Therefore, a new technical solution needs to be designed to address this issue. Summary of the Invention

[0005] The purpose of this invention is to provide a seamless bending support mold device, which solves the problem mentioned in the background art that existing workpieces are drilled with holes before stamping to meet requirements, and the workpieces with holes are prone to creases under linear contact pressure when stamped again, making seamless bending inconvenient.

[0006] To achieve the above objectives, the present invention provides the following technical solution: a seamless bending support mold device, comprising a steel block, wherein arc-shaped grooves are provided on both sides of the top of the steel block, a rotating block is provided in the inner cavity of the grooves, and an extension is integrally formed on the side wall of the rotating block, the extension extending to the top edge of the steel block. The steel block has sliding grooves on both sides of its two side walls. A spring is installed in the inner cavity of the sliding groove. One end of the spring and its extension are fixedly connected. The tail end of the spring is connected to a traction component installed in the sliding groove for pulling the spring.

[0007] By adopting the above technical solution, the device is first installed at the place of use, and then the product is placed on top of the two rotating blocks. Then, the punch head is lowered to punch the workpiece. During the punching process, the rotating blocks will rotate, and under the pull of the spring, the rotating blocks can rotate stably, so that the rotating blocks can contact the workpiece surface, which helps to improve the stability of the punching process, thus helping to avoid creases on the outer wall of the workpiece, and thus helping to improve the bending quality.

[0008] In a preferred embodiment of the present invention, the traction assembly includes a sliding block, which is slidably installed in the inner cavity of the sliding groove. A servo motor is provided on the lower side of the sliding block and is fixedly installed at the bottom of the inner cavity of the sliding groove. A screw is fixedly connected to the outer end of the drive shaft of the servo motor. The outer end of the screw is inserted into a threaded hole opened at the bottom of the sliding block and is threadedly engaged. The top of the sliding block is connected to a spring.

[0009] By adopting the above technical solution, after long-term use, the elasticity of the spring will decrease, resulting in insufficient pulling force on the rotating block and affecting its stability under pressure rotation. At this time, the servo motor can drive the screw to rotate, thereby driving the sliding block to descend, thus pulling the spring and ensuring that the spring has sufficient pulling force on the rotating block.

[0010] In a preferred embodiment of the present invention, a stabilizing bearing is fitted on the lower side of the outer wall of the screw, and the outer wall of the stabilizing bearing is fixedly connected to the inner wall of the sliding groove by a fixing block.

[0011] By adopting the above technical solution and stabilizing the bearing settings, the screw rotation stability is high.

[0012] In a preferred embodiment of the present invention, a tension sensor is fixedly installed on the top of the sliding block, and a connecting block is fixedly connected to the outer end of the tension sensor. The connecting block and the tail end of the spring are detachably fixedly connected.

[0013] By adopting the above technical solution, the tension of the spring can be detected by the tension sensor. When the tension is insufficient, the industrial control computer can send a working command to the servo motor to drive the sliding block to descend, thereby automatically adjusting the spring tension and ensuring that the pulling force on the rotating block is sufficient.

[0014] In a preferred embodiment of the present invention, the signal output terminal of the tension sensor is connected to the signal input terminal of the industrial control computer, and the signal output terminal of the industrial control computer is connected to the signal input terminal of the servo motor.

[0015] In a preferred embodiment of the present invention, the industrial control computer is further provided with a synchronization control module.

[0016] By adopting the above technical solution, the industrial control computer can send control commands to four servo motors simultaneously through the synchronous control module, thereby enabling the four servo motors to work synchronously and ensuring synchronous tensioning of the four springs.

[0017] In a preferred embodiment of the present invention, limiting grooves are provided on both sides of the inner cavity of the sliding groove, and limiting sliders are slidably installed in the inner cavity of the limiting grooves. The limiting sliders and the side walls of the sliding blocks are fixedly connected. An electromagnet is fixedly connected to the outer wall of the limiting sliders. An iron plate is fixedly installed in the inner cavity of the limiting grooves, and the electromagnets are attached to the surface of the iron plate.

[0018] By adopting the above technical solution, after the sliding block is stretched to the position by the tension spring, the electromagnet can be energized to generate an attraction force on the iron plate, thereby improving the stability of the sliding block. This helps to avoid tension wear on the screw thread when the rotating block rotates and the tension spring is stretched multiple times, thus helping to extend the service life of the tensioning assembly.

[0019] In a preferred embodiment of the present invention, the bottom of the steel block is integrally formed with a protruding block.

[0020] By adopting the above technical solution, the protruding block is designed so that it can be inserted into the clamp of the bearing seat, thus facilitating its fixation.

[0021] In a preferred embodiment of the present invention, a recess is provided at the center of the top of the steel block to prevent the workpiece from being worn during stamping and bending.

[0022] Compared with the prior art, the beneficial effects of the present invention are as follows: The present invention features strip grooves on both sides of the top of the steel block, and a rotating block is installed in the strip groove. The rotating block is pulled by a spring, so when the workpiece is placed on the rotating block for stamping, the rotating block will rotate under force, thereby making the rotating block and the workpiece in surface contact. This helps to improve the stability of the stamping process, thus helping to avoid creases on the outer wall of the workpiece, and thus improving the bending quality. The tensioning component can drive the spring to stretch. When the spring loses elasticity after long-term use, the spring is stretched. The tension sensor detects the tension value to ensure that the tension on the rotating block is constant. This helps to ensure the stability of the rotating block when it is flipped, and helps to avoid the situation where insufficient tension causes the rotating block to be unstable when flipping, which affects the bending quality. Once the sliding block is in place, the electromagnet is energized to generate an attractive force on the iron plate, which improves the stability of the sliding block. This helps to avoid damage to the screw threads when the spring is pulled repeatedly, thus extending the service life of the pulling assembly. Attached Figure Description

[0023] Other features, objects, and advantages of the present invention will become more apparent from the following detailed description of non-limiting embodiments with reference to the accompanying drawings: Figure 1 This is a schematic diagram of the overall structure of a non-marking bending support mold device according to the present invention; Figure 2 This is a side view of the non-marking bending support mold device of the present invention; Figure 3 This is a front view schematic diagram of a non-marking bending support mold device according to the present invention; Figure 4 This is a front cross-sectional view of a seamless bending support mold device according to the present invention. Figure 5 This is a system operation diagram of a non-marking bending support mold device according to the present invention.

[0024] In the picture: 1. Steel block; 11. Strip groove; 12. Rotating block; 13. Extension; 14. Sliding groove; 15. Protruding block; 2. Sliding block; 21. Connecting block; 22. Spring; 23. Servo motor; 24. Screw; 25. Stabilizing bearing; 26. Limiting slider; 27. Electromagnet; 28. Iron plate; 29. ​​Tension sensor; 3. Industrial control computer. Detailed Implementation

[0025] The technical solutions of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments.

[0026] In the description of this invention, it should be understood that the terms "upper", "lower", "front", "rear", "left", "right", "top", "bottom", "inner", "outer", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this invention.

[0027] In the description of this invention, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "setting" should be interpreted broadly. For example, they can refer to a fixed connection or setting, a detachable connection or setting, or an integral connection or setting. Those skilled in the art can understand the specific meaning of the above terms in this invention based on the specific circumstances. The model numbers of the electrical appliances provided in this invention are for reference only, and different models of electrical appliances with the same function can be replaced according to actual usage.

[0028] Please see Figure 1-5 The present invention provides a technical solution: a seamless bending support mold device, including a steel block 1, with arc-shaped strip grooves 11 on both sides of the top of the steel block 1, a rotating block 12 in the inner cavity of the strip groove 11, and an extension 13 integrally formed on the side wall of the rotating block 12, the extension 13 extending to the top edge of the steel block 1. The steel block 1 has sliding grooves 14 on both sides of its two side walls. A spring 22 is installed in the inner cavity of the sliding groove 14. One end of the spring 22 is fixedly connected to the extension 13. The tail end of the spring 22 is connected to a pulling component installed in the sliding groove for pulling the spring 22.

[0029] It should be understood that in actual use, the device is first installed at the point of use, and then the workpiece to be bent is placed stably on the top support surface of the two rotating blocks 12, ensuring that the bending part of the workpiece is aligned with the top recess of the steel block 1. Subsequently, the stamping head of the stamping equipment descends at a uniform speed in the vertical direction, applying pressure to the pre-set bending point of the workpiece. During this process, the deformation of the workpiece will cause the rotating block 12 in contact with it to rotate adaptively around the arc trajectory of the strip groove 11, while the springs 22 on both sides always maintain a stable pulling force, providing a continuous reverse pulling force for the rotating block 12, so that the rotating block 12 can closely fit the curvature of the workpiece and always maintain a surface contact state. This dynamic fitting design effectively disperses the stamping pressure and avoids the local stress concentration caused by traditional rigid support. It not only greatly improves the positioning stability of the workpiece during the stamping and bending process, but also completely eliminates the indentations and scratches on the outer wall of the workpiece caused by point contact or line contact, ultimately significantly improving the surface accuracy and overall quality of the bent product.

[0030] Furthermore, the bottom of the steel block 1 is integrally formed with a protrusion 15. The protrusion 15 is designed so that it can be inserted into the clamp of the bearing seat, thereby facilitating its fixation.

[0031] Furthermore, a recess is provided at the top center of the steel block 1 to prevent the workpiece from being worn during stamping and bending.

[0032] like Figure 1 and 2As shown; the traction assembly includes a sliding block 2, which is slidably installed in the inner cavity of the sliding groove 14. A servo motor 23 is provided on the lower side of the sliding block 14. The servo motor 23 is fixedly installed at the bottom of the inner cavity of the sliding groove 14. A screw 24 is fixedly connected to the outer end of the drive shaft of the servo motor 23. The outer end of the screw 24 is inserted into the threaded hole opened at the bottom of the sliding block 2 and the threads are engaged. The top of the sliding block 2 is connected to the spring 22. It should be understood that during long-term, high-frequency bending operations, the spring 22 will experience fatigue wear due to repeated stretching, and its elastic coefficient will gradually decrease, leading to a weakening of the pulling force on the rotating block 12. When the pulling force is insufficient, the rotational response speed of the rotating block 12 will slow down, reducing its fit with the workpiece and potentially causing workpiece bending deviation or slight creases on the surface. At this time, by activating the servo motor 23, its drive shaft will drive the screw 24 to rotate precisely in the forward direction. Since the screw 24 is tightly engaged with the threaded hole at the bottom of the sliding block 2, and the sliding block 2 forms a guiding constraint with the limiting slide groove of the sliding groove 14 through the limiting slider 26, the rotational motion of the screw 24 can be smoothly converted into the vertical downward motion of the sliding block 2 along the sliding groove 14, thereby directionally stretching the spring 22 until the pulling force of the spring 22 returns to the preset standard value, ensuring that the rotating block 12 always receives sufficient tensile support when rotating under pressure, maintaining the stability of the bending process.

[0033] Furthermore, a stabilizing bearing 25 is fitted on the lower side of the outer wall of the screw 24. The outer wall of the stabilizing bearing 25 is fixedly connected to the inner wall of the sliding groove 14 through a fixing block. The setting of the stabilizing bearing 25 makes the rotational stability of the screw 24 high.

[0034] Furthermore, a tension sensor 29 is fixedly installed on the top of the sliding block 2, and a connecting block 21 is fixedly connected to the outer end of the tension sensor 29. The connecting block 21 and the tail end of the spring 22 are detachably fixedly connected.

[0035] It should be understood that the signal output terminal of the tension sensor 29 is connected to the signal input terminal of the industrial control computer 3, and the signal output terminal of the industrial control computer 3 is connected to the signal input terminal of the servo motor 23. After the tension sensor 29 is fixedly connected to the connecting block 21 at the tail end of the spring 22, it can collect the tension data of the spring 22 in static or dynamic states in real time and transmit this data to the industrial control computer 3 in the form of electrical signals. The industrial control computer 3 has a built-in preset tension threshold parameter. By comparing the real-time collected tension data with the threshold standard, it can automatically determine whether the tension of the spring 22 meets the standard. When the detected tension is lower than the preset threshold, the industrial control computer 3 will immediately send a precise control command to the servo motor 23 through the signal output terminal, driving the servo motor 23 to drive the sliding block 2 to slowly descend and synchronously stretch the spring 22. During this process, the tension sensor continuously feeds back the tension change until the data reaches the threshold range. Then, the industrial control computer 3 controls the servo motor 23 to stop working, realizing the automatic and precise adjustment of the spring tension. At the same time, the industrial control computer 3 can send synchronous execution commands to the four servo motors 23 on both sides of the device through a dedicated synchronous control module to ensure that the stretching amplitude and speed of the four springs 22 are completely consistent, avoiding the tilting of the rotating block 12 due to uneven tension on one side, and further ensuring the symmetry and accuracy of the workpiece bending.

[0036] like Figure 1 and 4 As shown; both sides of the inner cavity of the sliding groove 14 are provided with limiting grooves, and the inner cavity of the limiting groove is slidably installed with limiting sliders 26. The limiting sliders 26 and the side walls of the sliding block 2 are fixedly connected. An electromagnet 27 is fixedly connected to the outer wall of the limiting slider 26. An iron plate 28 is fixedly installed in the inner cavity of the limiting groove, and the electromagnet 27 is attached to the surface of the iron plate 28.

[0037] It should be understood that when the sliding block 2 descends to the target position under the drive of the servo motor 23, and the tension of the spring 22 reaches the preset standard, the industrial control computer 3 will simultaneously send an energizing command to the electromagnet 27 on the side wall limit slider 26 of the sliding block 2. Upon energization, the electromagnet 27 immediately generates strong magnetism, forming a tight attraction with the iron plate 28 fixed to the inner wall of the limit groove, thus firmly fixing the sliding block 2 in its current position. In subsequent bending operations, the rotating block 12 will repeatedly rotate with the workpiece deformation, generating intermittent tension forces on the spring 22. At this time, the attraction force between the electromagnet 27 and the iron plate 28 can directly offset these intermittent tension forces, preventing the tension from directly acting on the thread structure of the screw 24. This design effectively reduces wear and deformation between threads, prevents long-term stress from causing thread stripping or decreased accuracy, significantly extends the service life of core components such as the screw 24 and the sliding block 2 in the tensioning assembly, and reduces equipment maintenance costs and downtime.

[0038] Furthermore, the components included in the non-marking bending support mold device of the present invention are all general standard parts or parts known to those skilled in the art. Their structure and principle can be known to those skilled in the art through technical manuals or conventional experimental methods. In the idle part of the device, all the above-mentioned electrical components, which refer to power components, electrical components, and the matching monitoring computer and power supply, are connected by wires. The electrical connection between each electrical component is completed in the order of operation. The detailed connection method is a well-known technology in the art. The following mainly introduces the working principle and process, and will not describe the electrical control.

[0039] It will be apparent to those skilled in the art that the present invention is not limited to the details of the exemplary embodiments described above, and that the invention can be implemented in other specific forms without departing from its spirit or essential characteristics. Therefore, the embodiments should be considered in all respects as exemplary and non-limiting, and the scope of the invention is defined by the appended claims rather than the foregoing description. Thus, all variations falling within the meaning and scope of equivalents of the claims are intended to be included within the present invention. No reference numerals in the claims should be construed as limiting the scope of the claims.

[0040] Furthermore, it should be understood that although this specification describes embodiments, not every embodiment contains only one independent technical solution. This narrative style is merely for clarity. Those skilled in the art should consider the specification as a whole, and the technical solutions in each embodiment can also be appropriately combined to form other embodiments that can be understood by those skilled in the art.

Claims

1. A seamless bending support mold device, comprising a steel block (1), characterized in that: The top two sides of the steel block (1) are provided with arc-shaped grooves (11), and the inner cavity of the grooves (11) is provided with a rotating block (12). The side wall of the rotating block (12) is integrally formed with an extension (13), which extends to the top edge of the steel block (1). The steel block (1) has sliding grooves (14) on both sides of its two side walls. A spring (22) is provided in the inner cavity of the sliding groove (14). One end of the spring (22) is fixedly connected to the extension (13). The tail end of the spring (22) is connected to a traction component installed in the sliding groove for pulling the spring (22).

2. The seamless bending support mold device according to claim 1, characterized in that: The traction assembly includes a sliding block (2), which is slidably installed in the inner cavity of the sliding groove (14). A servo motor (23) is provided on the lower side of the sliding block (14). The servo motor (23) is fixedly installed at the bottom of the inner cavity of the sliding groove (14). A screw (24) is fixedly connected to the outer end of the drive shaft of the servo motor (23). The outer end of the screw (24) is inserted into the threaded hole opened at the bottom of the sliding block (2) and the threads are engaged. The top of the sliding block (2) is connected to the spring (22).

3. The seamless bending support mold device according to claim 2, characterized in that: A stabilizing bearing (25) is fitted on the lower side of the outer wall of the screw (24), and the outer wall of the stabilizing bearing (25) is fixedly connected to the inner wall of the sliding groove (14) by a fixing block.

4. The seamless bending support mold device according to claim 2, characterized in that: A tension sensor (29) is fixedly installed on the top of the sliding block (2), and a connecting block (21) is fixedly connected to the outer end of the tension sensor (29). The connecting block (21) and the tail end of the spring (22) are detachably fixedly connected.

5. The seamless bending support mold device according to claim 4, characterized in that: The signal output terminal of the tension sensor (29) is connected to the signal input terminal of the industrial control computer (3), and the signal output terminal of the industrial control computer (3) is connected to the signal input terminal of the servo motor (23).

6. The seamless bending support mold device according to claim 5, characterized in that: The industrial control computer (3) is also equipped with a synchronization control module.

7. The seamless bending support mold device according to claim 1, characterized in that: The inner walls of the sliding groove (14) are provided with limiting grooves. The inner cavity of the limiting groove is slidably installed with a limiting slider (26). The limiting slider (26) and the side wall of the sliding block (2) are fixedly connected. An electromagnet (27) is fixedly connected to the outer wall of the limiting slider (26). An iron plate (28) is fixedly installed in the inner cavity of the limiting groove. The electromagnet (27) is attached to the surface of the iron plate (28).

8. The seamless bending support mold device according to claim 1, characterized in that: The bottom of the steel block (1) is integrally formed with a protruding block (15).

9. The seamless bending support mold device according to claim 1, characterized in that: A recess is provided at the middle of the top of the steel block (1).

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