Automatic bending center automatic splicing foot device

Abstract

An automatic presser foot assembly device for an automatic bending center includes a guide plate, on which a lifting presser foot is slidably mounted. The lifting presser foot slides to the middle of the guide plate. The lifting presser foot includes a cylinder seat and a lifting presser foot. A fixing block is fixedly mounted on the bottom surface of the cylinder seat. A through groove is opened on one side of the top surface of the cylinder seat, with the top of the through groove communicating with the outside. The width of the top of the through groove is smaller than the width of the bottom of the through groove. The guide plate is inserted into the through groove. A control component, a connecting component, and a guiding component are arranged inside the fixing block. The control component controls the vertical displacement of the lifting presser foot. The connecting component is connected to the lifting presser foot. The guiding component guides the lifting presser foot. All components are integrated inside the cylinder seat, with a reasonable structural layout, small space occupation, and no impact on the operation of other moving parts of the bending center. The components are connected by detachable methods such as bolts and pins, which facilitates later inspection, replacement, and maintenance.

Description

Technical Field

[0001] This utility model belongs to the technical field of bending equipment, specifically relating to an automatic presser foot assembly device applied to an automatic bending center. Background Technology

[0002] In the field of sheet metal processing, automatic bending centers, as key equipment for achieving high-precision bending and forming, are widely used in industries such as automobile manufacturing, home appliance production, and hardware processing. During operation, a pressure foot device is used to stably clamp and position the sheet metal, preventing displacement, warping, or wrinkling during bending and ensuring that the bending angle and dimensional accuracy meet process requirements. Therefore, the performance of the pressure foot device directly determines the processing quality, efficiency, and equipment adaptability of the automatic bending center, making it one of the core components affecting the stability of the production line.

[0003] As the industry's demands for processing precision, batch production efficiency, and adaptability to various workpiece specifications increase, traditional presser foot devices have gradually revealed many technical shortcomings, making it difficult to meet the stringent requirements of modern production and becoming a key bottleneck restricting the performance upgrade of automatic bending centers.

[0004] Traditional presser foot devices often use an integrated fixed structure or can only achieve a small range of position adjustment, making it impossible to flexibly adjust the presser foot position according to the workpiece size and bending process requirements. If it is necessary to adapt to plates of different widths and thicknesses, it is often necessary to disassemble and replace the entire presser foot assembly, or even modify the original installation structure of the equipment. This is not only cumbersome and time-consuming, but may also cause the equipment reference to shift due to the modification, affecting the subsequent processing accuracy. There are problems in use. Utility Model Content

[0005] This utility model addresses the technical problems existing in the prior art by providing an automatic presser foot assembly device for automatic bending centers.

[0006] To achieve the above objectives, the technical solution adopted by this utility model is as follows: an automatic pressing foot device for automatic bending center, including a guide plate, on which a lifting pressing foot is slidably installed, and the lifting pressing foot slides to the middle of the guide plate.

[0007] Preferably, the lifting pressure foot includes a cylinder seat and a lifting pressure foot. A fixing block is fixedly installed on the bottom surface of the cylinder seat. A through groove is opened on one side of the top surface of the cylinder seat, and the top of the through groove communicates with the outside. The width of the top of the through groove is smaller than the width of the bottom of the through groove. A guide plate is inserted into the through groove. A control component, a connecting component, and a guide component are provided in the fixing block. The control component controls the vertical displacement of the lifting pressure foot. The connecting component is connected to the lifting pressure foot. The guide component guides the lifting pressure foot.

[0008] Preferably, the control component includes a cavity formed within a fixed block, a piston slidably mounted within the cavity, a piston rod fixedly mounted at the bottom end of the piston, and a through hole formed on the inner wall at the bottom end of the cavity, through which the piston rod passes.

[0009] Preferably, the connecting component includes a placement groove at the bottom of the fixed block, a pushing member, and a contact member. The pushing member moves vertically within the placement groove and is connected to the piston rod. The pushing member contacts the contact member and pushes the contact member downward. The contact member contacts the lifting pressure foot.

[0010] Preferably, the pushing component includes a push block, with two elongated grooves on one side of the push block, and the top surface of the push block is fixedly connected to the bottom end of the piston rod.

[0011] Preferably, the contact element includes two first blocks and two second blocks. The top of the first block is fixedly connected to one end of the second block. A pin hole is opened on one side of the top of the first block, and the pin hole is connected to the elongated groove by a pin. The other end of the second block is rotatably connected to the inner wall of the side of the placement groove. The push block is located above the first block and can contact the top of the first block.

[0012] Preferably, the guide assembly includes two placement cavities, which are located at the top of the fixed block and arranged one in front of the other. Two guide sleeves are embedded in the bottom of the fixed block, with the center of the guide sleeves and the center of the placement cavity on the same vertical center line. A guide shaft is slidably installed inside the guide sleeves, with the bottom end of the guide shaft fixedly connected to the top surface of the lifting pressure foot. The top end of the guide shaft passes through the guide sleeve and is inserted into the placement cavity. A return spring is installed inside the placement cavity, with one end of the return spring fixedly connected to the inner wall of the bottom of the placement cavity and the other end of the return spring fixedly connected to the top end of the guide shaft. The guide shaft passes through the return spring.

[0013] Preferably, the cylinder seat has screw holes at both the front and rear ends, with screws threaded into the screw holes, and limit rods are fixedly installed at the opposite ends of the two screws.

[0014] Compared with the prior art, the advantages and positive effects of this utility model are as follows: (1) The lifting press foot is slidably connected to the guide plate by bolts, and can be accurately moved to the middle of the guide plate and fixed. Combined with the limit rod design on both sides of the cylinder seat, it can be spliced ​​with the existing left and right L-shaped press feet to avoid mutual interference. There is no need to make major modifications to the original structure of the equipment, and it can be adapted to different specifications of bending centers and workpiece processing requirements. (2) The guide assembly, through the sliding fit between the guide sleeve and the guide shaft, combined with the elastic constraint of the return spring, ensures that the lifting press foot always maintains a straight trajectory during vertical movement, effectively preventing deviation and skew; the return spring also realizes the automatic return of the press foot, ensuring rapid reset after each pressing action and ensuring the continuity of the processing cycle. (3) The contact transmission method between the push block and the contacting parts makes the pressure transmission smooth, reduces the damage of impact load to the parts, and at the same time reduces operating noise and improves the working environment. (4) Each component is integrated inside the cylinder seat, with a reasonable structural layout, small space occupation, and does not affect the operation of other moving parts at the bending center; the parts are connected by detachable methods such as bolts and pins, which facilitates later inspection, replacement and maintenance. Attached Figure Description

[0015] To more clearly illustrate the technical solutions of the embodiments of this utility model, the accompanying drawings used in the description of the embodiments will be briefly introduced below: Figure 1 This is a schematic diagram of the installation of the cylinder block and the guide plate; Figure 2 Schematic diagram of cylinder block structure; Figure 3 It is along Figure 2 A cross-sectional view along line AA; Figure 4 yes Figure 3 A magnified view of part B; Figure 5 This is a structural diagram of the first and second blocks.

[0016] Explanation of reference numerals in the attached figures: 1. Guide plate; 2. Cylinder seat; 3. Lifting foot; 4. Through groove; 5. Cavity; 6. Piston rod; 7. Push block; 8. First block; 9. Second block; 10. Placement cavity; 11. Guide sleeve; 12. Guide shaft; 13. Return spring; 14. Limiting rod; 15. Fixing block. Detailed Implementation

[0017] To better understand the above-mentioned objectives, features and advantages of this utility model, the present utility model will be further described below in conjunction with the accompanying drawings and embodiments.

[0018] Many specific details are set forth in the following description in order to provide a full understanding of the present invention. However, the present invention may also be implemented in other ways different from those described herein. Therefore, the present invention is not limited to the specific embodiments disclosed in the following specification.

[0019] Example 1 The following is combined with Figures 1-5 A further description of an automatic presser foot assembly device applied to an automatic bending center in Embodiment 1 is provided, such as... Figure 1 As shown, it includes a guide plate 1, on which a lifting pressure foot is slidably mounted, and the lifting pressure foot slides to the middle of the guide plate 1.

[0020] The lifting pressure foot is bolted to the guide plate 1. The top surface of the guide plate 1 has pre-drilled screw holes. The lifting pressure foot is installed on the guide plate 1 and then slid on the guide plate 1 to slide to the middle of the guide plate 1. The lifting pressure foot is then fixed to the guide plate 1 with bolts to prevent the lifting pressure foot from moving further.

[0021] like Figure 1 , Figure 2 , Figure 3 As shown, the lifting pressure foot includes a cylinder seat 2 and a lifting pressure foot 3. A fixing block 15 is fixedly installed on the bottom surface of the cylinder seat 2. A through groove 4 is opened on one side of the top surface of the cylinder seat 2. The top of the through groove 4 communicates with the outside. The width of the top of the through groove 4 is smaller than the width of the bottom of the through groove 4. A guide plate 1 is inserted into the through groove. A control component, a connecting component, and a guide component are provided in the fixing block 15. The control component controls the vertical displacement of the lifting pressure foot 3. The connecting component is connected to the lifting pressure foot 3. The guide component guides the lifting pressure foot 3.

[0022] Both the through slot 4 and the guide plate 1 have dovetail-shaped cross sections. The through slot 4 and the guide plate 1 are inserted and fitted together, so that the cylinder seat 2 can move horizontally on the guide plate 1. The top and back of the cylinder seat 2 are reserved with screw holes. The bolt passes through the screw holes on the guide plate 1 and is inserted into the screw holes of the cylinder seat 2 to fix the cylinder seat 2. The cylinder seat 2 moves on the guide plate 1 and moves to the middle of the guide plate 1. Then, the lifting pressure foot 3 is controlled to move vertically through the control component. During the vertical displacement, the guide component group guides the lifting pressure foot 3 to prevent the lifting pressure foot from deviating.

[0023] like Figure 3 As shown, the control component includes a cavity 5 opened in the fixed block 15, a piston is slidably installed in the cavity 5, a piston rod 6 is fixedly installed at the bottom end of the piston, and a through hole is opened in the inner wall at the bottom end of the cavity 5, through which the piston rod 6 passes.

[0024] An annular sealing gasket is installed at the joint between the piston rod 6 and the through hole. The sealing gasket is fixedly installed on the inner wall of the through hole. The top of the cavity 5 is connected to an air source. The air source enters from the through hole above the cavity 5, pushing the piston downward and controlling the piston rod 6 to move downward. Through the connection of the connector and the guidance of the guide, the lifting pressure foot 3 can be controlled to move downward.

[0025] like Figure 3 As shown, the connecting assembly includes a placement groove at the bottom of the fixing block 15, a pushing member, and a contact member. The pushing member moves vertically within the placement groove and is connected to the piston rod 6. The pushing member contacts the contact member and pushes the contact member downward. The contact member contacts the lifting pressure foot 3.

[0026] When the piston rod 6 moves downward, the control pusher moves downward and the control contacting member moves downward, pushing the lifting pressure foot 3 downward so that the lifting pressure foot contacts the workpiece.

[0027] like Figure 3 and Figure 4 As shown, the pushing component includes a push block 7, with two elongated grooves on one side of the push block 7, and the top surface of the push block 7 is fixedly connected to the bottom end of the piston rod 6.

[0028] Push block 7 moves downward to contact the contact member and pushes the contact member downward. After the contact member contacts the lifting pressure foot 3, it pushes the lifting pressure foot 3 downward.

[0029] like Figure 4 , Figure 5 As shown, the contact component includes two first blocks 8 and two second blocks 9. The top of the first block 8 is fixedly connected to one end of the second block 9. A pin hole is opened on one side of the top of the first block 8, and the pin hole is connected to the elongated groove by a pin. The other end of the second block 9 is rotatably connected to the inner wall of the side of the placement groove. The push block 7 is located above the first block 8 and can contact the top of the first block 8.

[0030] The specific shape connecting the first piece 8 and the second piece 9 is as follows: Figure 5 As shown, the push block 7 moves downward under the push of the piston rod 6, pushing the first block 8 downward. The second block 9 rotates around the connection point with the placement groove. At the same time, the pin slides in the elongated groove, which can control the first block 8 to move downward. During the downward movement, the first block 8 and the second block 9 will not get stuck.

[0031] like Figure 3 As shown, the guide assembly includes two placement cavities 10, which are located at the top of the fixing block 15 and arranged in a front-to-back manner. Two guide sleeves 11 are embedded in the bottom of the fixing block 15. The center of the guide sleeves 11 and the center of the placement cavity 10 are on the same vertical center line. A guide shaft 12 is slidably installed inside the guide sleeves 11. The bottom end of the guide shaft 12 is fixedly connected to the top surface of the lifting pressure foot 3. The top end of the guide shaft 12 passes through the guide sleeves 11 and is inserted into the placement cavity 10. A return spring 13 is installed inside the placement cavity 10. One end of the return spring 13 is fixedly connected to the inner wall of the bottom end of the placement cavity 10, and the other end of the return spring 13 is fixedly connected to the top end of the guide shaft 12. The guide shaft 12 passes through the return spring 13.

[0032] The cavity 5 is located between the two placement cavities 10. The first block 8 pushes the lifting foot 3 to move downward. Under the guidance of the guide sleeve 11, the guide shaft 12 makes vertical displacement. At the same time, the return spring 13 is compressed. When the piston rod 6 moves upward, under the elastic force of the return 13, the guide shaft 12 moves upward, driving the lifting foot 3 to move upward. The lifting foot 3 contacts the bottom surface of the cylinder seat 2 again.

[0033] like Figure 1 , Figure 3As shown, screw holes are opened at both ends of the cylinder seat 2, and screw rods are fitted into the screw holes. Limiting rods 14 are fixedly installed at the opposite ends of the two screw rods.

[0034] When the cylinder seat 2 is slidably installed in the middle of the guide plate 1, the existing left and right L-shaped pressure feet are slidably installed on both sides of the cylinder seat 2. By limiting the position of the limit rod 14, the L-shaped pressure feet can be prevented from contacting the cylinder seat 2, and the L-shaped pressure feet can be prevented from blocking the downward movement of the lifting pressure foot 3.

[0035] The method of using this device is as follows: I. Preliminary Preparations Component inspection: Confirm that all components of the device are intact and undamaged, and focus on inspecting key components such as guide plate 1, cylinder seat 2, lifting pressure foot 3, guide shaft 12, return spring 13, and limit rod 14 to ensure that there is no deformation, jamming or wear; check whether the sealing gasket (where the piston rod 6 meets the through hole) is intact to avoid air leakage.

[0036] Tools and air supply preparation: Prepare bolts, pins, wrenches and other tools of the same specifications; connect a stable air supply to ensure that the air supply pressure meets the working requirements of the device (the pressure range is adapted according to the bending center parameters, generally 0.4-0.8MPa), and check that there are no air leaks in the air line.

[0037] Workpiece and equipment compatibility: Confirm that the size and thickness of the workpiece to be bent are compatible with the device, and ensure that the stroke of the lifting pressure foot 3 can cover the workpiece holding requirements; adjust the automatic bending center to the ready-to-work state, and clean the worktable to remove debris.

[0038] II. Installation and Debugging Assembly of guide plate and lifting pressure foot: Install guide plate 1 at the designated position in the automatic bending center, ensuring that the guide plate is level and stable (it can be calibrated with a level).

[0039] Align the through groove 4 of the cylinder seat 2 with the guide plate 1, and slide the lifting pressure foot horizontally along the guide plate until it moves to the middle position of the guide plate 1.

[0040] Use bolts to pass through the pre-drilled holes in the guide plate 1 and screw them into the corresponding screw holes on the top surface of the cylinder seat 2. Tighten the bolts to fix the lifting pressure foot and prevent it from shifting during operation.

[0041] The L-shaped presser feet on both sides are installed together: The existing left and right L-shaped presser feet are installed on both sides of the cylinder seat 2. After adjusting the position of the L-shaped presser feet, the screws at the front and rear ends of the cylinder seat 2 are rotated to drive the limit rod 14 to extend and retract until the limit rod 14 is in contact with the side of the L-shaped presser foot (without squeezing), so as to avoid the L-shaped presser foot blocking the movement stroke of the lifting presser foot 3.

[0042] Pneumatic circuit and control component commissioning: Connect the air supply pipe to the vent at the top of cavity 5, turn on the air supply switch, test whether the air path is unobstructed, and observe whether the piston rod 6 can extend and retract flexibly without any jamming or leakage.

[0043] Manually control the air supply to check whether the movement stroke of the piston and piston rod 6 meets the design requirements, and ensure that the maximum downward movement distance of the lifting pressure foot 3 can effectively hold the workpiece.

[0044] Guide and reset function debugging: By repeatedly switching the air supply on and off, observe the lifting and lowering action of the lifting foot 3: when it descends, the guide shaft 12 slides smoothly along the guide sleeve 11 without deviation; when it rises, the return spring 13 can drive the lifting foot 3 to quickly return to its original position and fit against the bottom surface of the cylinder seat 2 without jamming.

[0045] Check the connecting components: whether the transmission of push block 7, first block 8, and second block 9 is smooth, and whether the pin slides freely in the elongated groove of push block 7 without jamming.

[0046] III. Operation Procedures Start the device: Turn on the main power of the automatic bending center, turn on the air supply switch, and confirm that the device is powered on and the air supply is normal, and that the lifting pressure foot 3 is in the initial return state (fitting with the bottom surface of the cylinder seat 2).

[0047] Workpiece positioning: Place the workpiece to be bent at the designated position on the bending center worktable, adjust the workpiece posture, and ensure that the part that needs to be pressed is aligned directly below the lifting presser foot 3.

[0048] Press-foot holding start: The control system of the automatic bending center issues a "pressing command", and the air source supplies air into the cavity 5. The gas pushes the piston to move downward, which in turn drives the piston rod 6 to move downward in sync.

[0049] The piston rod 6 drives the push block 7 to move downward. The push block 7 contacts the top of the first block 8 and pushes it downward. The second block 9 rotates around the connection point with the side of the placement slot. The pin slides in the elongated groove to ensure that the transmission is smooth.

[0050] After the first piece 8 moves down, it pushes the lifting pressure foot 3 to move downward. The guide shaft 12 guides vertically along the guide sleeve 11 to prevent the lifting pressure foot from deviating until the lifting pressure foot 3 is in close contact with the surface of the workpiece, thus completing the pressing (the pressing force is adjusted by the air source pressure).

[0051] Bending operation coordination: Maintain the pressing state of the lifting pressure foot 3, and the automatic bending center performs the bending process. During this period, the device continuously and stably presses the workpiece to prevent it from shifting.

[0052] Pressure release: After the bending process is completed, the control system issues a "release command", the air source is depressurized, and the pressure inside cavity 5 disappears.

[0053] The return spring 13 resets under the action of elastic force, pulls the guide shaft 12 to move upward, and drives the lifting pressure foot 3 to return to its original position until it is in contact with the bottom surface of the cylinder seat 2.

[0054] The connecting components return to their original positions as the lifting pressure foot 3 moves: the first block 8 and the second block 9 return to their initial positions under gravity and reset force, and the push block 7 and piston rod 6 reset upwards.

[0055] IV. Shutdown and Maintenance Shutdown procedure: After completing a batch of workpiece operations, first turn off the air source switch to release the residual pressure in the air circuit and ensure that the lifting pressure foot 3 is fully returned to its original position.

[0056] Turn off the main power supply to the automatic bending center and clean the workpiece debris from the worktable.

[0057] Routine maintenance: After each day's work, wipe the surface of the device with a clean cloth to remove oil stains and iron filings, and pay special attention to cleaning the sliding surface of the guide plate 1 and the mating surface between the guide sleeve 11 and the guide shaft 12.

[0058] Check the tightness of bolts and pins weekly, and tighten them promptly if they are loose; check the elasticity of the return spring 13, and replace it promptly if the elasticity is diminished or deformed.

[0059] Perform a leak check on the air circuit once a month and replace any worn gaskets. Apply an appropriate amount of lubricating oil to the mating surfaces of the guide shaft 12, guide sleeve 11, through groove 4, and guide plate 1 to reduce wear.

[0060] Troubleshooting: If the lifting pressure foot does not descend: check if the air source pressure is normal, if the air path is blocked or leaking, and check if the connection between piston rod 6 and push block 7 is loose.

[0061] If the lifting pressure foot is misaligned: check whether the fit between the guide shaft 12 and the guide sleeve 11 is smooth, clean the mating surfaces of debris or reapply lubricant; check whether the guide plate 1 is level.

[0062] If reset is not smooth: Check if the reset spring 13 is damaged or stuck, or if the lifting pressure foot 3 is stuck by foreign objects. Replace the spring or remove the debris in time.

[0063] The above description is merely a preferred embodiment of the present utility model and is not intended to limit the present utility model in any other way. Any person skilled in the art may make changes or modifications to the above-disclosed technical content to create equivalent embodiments for application in other fields. However, any simple modifications or equivalent changes made to the above embodiments based on the technical essence of the present utility model without departing from the technical solution of the present utility model shall still fall within the protection scope of the technical solution of the present utility model.

Claims

1. An automatic presser foot assembly device for automatic bending centers, characterized in that, The system includes a guide plate (1), on which a lifting foot is slidably installed. The lifting foot slides to the middle of the guide plate (1). The lifting foot includes a cylinder seat (2) and a lifting foot (3). A fixing block (15) is fixedly installed on the bottom surface of the cylinder seat (2). A through groove (4) is opened on one side of the top surface of the cylinder seat (2). The top of the through groove (4) is connected to the outside. The width of the top of the through groove (4) is less than the width of the bottom of the through groove (4). The guide plate (1) is inserted into the through groove. A control component, a connecting component, and a guiding component are provided in the fixing block (15). The control component controls the vertical displacement of the lifting foot (3). The connecting component is connected to the lifting foot (3). The guiding component guides the lifting foot (3).

2. The automatic presser foot assembly device for automatic bending center as described in claim 1, characterized in that, The control component includes a cavity (5) opened in the fixed block (15), a piston is slidably installed in the cavity (5), a piston rod (6) is fixedly installed at the bottom end of the piston, and a through hole is opened in the inner wall at the bottom end of the cavity (5), through which the piston rod (6) passes.

3. The automatic presser foot assembly device for automatic bending center as described in claim 2, characterized in that, The connecting component includes a placement groove at the bottom of the fixed block (15), a pusher, and a contact. The pusher moves vertically in the placement groove and is connected to the piston rod (6). The pusher contacts the contact and pushes the contact downward. The contact contacts the lifting foot (3).

4. The automatic presser foot assembly device for automatic bending center as described in claim 3, characterized in that, The pusher includes a push block (7), which has two elongated grooves on one side, and the top surface of the push block (7) is fixedly connected to the bottom end of the piston rod (6).

5. The automatic presser foot assembly device for automatic bending center as described in claim 4, characterized in that, The contact components include two first blocks (8) and two second blocks (9). The top of the first block (8) is fixedly connected to one end of the second block (9). A pin hole is opened on one side of the top of the first block (8). The pin hole is connected to the elongated groove by a pin. The other end of the second block (9) is rotatably connected to the inner wall of the side of the placement groove. The push block (7) is located above the first block (8) and can contact the top of the first block (8).

6. The automatic presser foot assembly device for automatic bending center as described in claim 5, characterized in that, The guide assembly includes two placement cavities (10), which are located at the top of the fixed block (15) and arranged in a front-to-back manner. Two guide sleeves (11) are inlaid at the bottom of the fixed block (15). The center of the guide sleeve (11) and the center of the placement cavity (10) are on the same vertical center line. A guide shaft (12) is slidably installed inside the guide sleeve (11). The bottom end of the guide shaft (12) is fixedly connected to the top surface of the lifting foot (3). The top end of the guide shaft (12) passes through the guide sleeve (11) and is inserted into the placement cavity (10). A reset spring (13) is installed inside the placement cavity (10). One end of the reset spring (13) is fixedly connected to the bottom inner wall of the placement cavity (10), and the other end of the reset spring (13) is fixedly connected to the top end of the guide shaft (12). The guide shaft (12) passes through the reset spring (13).

7. The automatic presser foot assembly device for automatic bending center as described in claim 6, characterized in that, The cylinder seat (2) has screw holes at both ends, and screw rods are fitted into the screw holes. Limiting rods (14) are fixedly installed at the opposite ends of the two screw rods.

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