Combined processing machine for hinge production of doors and windows

Abstract

This invention relates to the field of component assembly processing, specifically to a combined processing machine tool for door and window hinge production. It aims to solve the technical problem that existing three-fold hinge mother-and-child hinge processing requires multiple machines to sequentially complete the bending, pre-rolling, and final rolling processes. It includes a machine base with a fixed step in the center. A fixture for positioning the hinge mother-and-child hinge is located at the top of the step. Tooth seats are slidably mounted on both sides of the step, and each tooth seat has an adjustable rolling platform for rounding the hinge end. The rolling platform has a large arc groove for initial bending and a small arc groove for rounding near the step. A pressure head for bending and auxiliary clamping is slidably mounted above the step. A support mechanism is located in the center of the step, including two support plates rotatably connected to the step. A baffle for limiting and clamping is adjustablely mounted on the side of the two support plates that are close together. This machine tool can complete the entire processing of the hinge mother-and-child hinge in one clamping operation, significantly reducing costs and increasing efficiency.

Description

Technical Field

[0001] This invention relates to the field of component assembly processing, specifically to a combination processing machine tool for the production of door and window hinges. Background Technology

[0002] With the rapid development of prefabricated buildings and the high-end system window and door industry, door and window hinges, as core opening and closing components, directly affect the service life, load-bearing capacity, and user experience of doors and windows due to their structural rationality, processing precision, and production efficiency. Currently, the mainstream hinges in the door and window industry are divided into flat-head hinges and three-fold hinges. Flat-head hinges, with their symmetrical flat structure, simple processing technology, and strong versatility, are suitable for conventional lightweight door and window scenarios. Three-fold hinges, through their three-section structure with a 90-degree bend at the hinge joint, can achieve concealed installation and a larger opening angle. Furthermore, their mother leaf adopts an L-shaped structure, which can stably bear the entire weight of the door panel and window frame, exhibiting outstanding resistance to deformation. They are widely used in heavy-duty entrance doors, high-end system windows, and other scenarios with high requirements for load-bearing capacity and appearance, and market demand continues to rise.

[0003] Compared to flat-head hinges, the processing difficulty of three-fold hinges lies primarily in the mother page. Its processing is far more complex than that of the child pages and flat-head hinge blades, with the core challenge being the bending and rolling of the mother page's end. To achieve precise alignment with the hinge shaft and stable load-bearing capacity, the mother page end must first be bent at a 90-degree angle to form the L-shaped load-bearing end. Then, the bent end is rolled to ensure the shaft can rotate freely without detaching. The rolling process is not a one-step process; the mother page end must first be pre-rolled to create a preliminary arc shape. Then, a second, precise rolling is performed on the pre-rolled area to ensure the inner diameter of the rolled portion perfectly matches the shaft size, avoiding problems such as excessively loose, excessively tight, or deformation. Currently, industry processing equipment cannot integrate these processes. Not only do the two core processes of bending and rolling need to be completed on two different machines, but the pre-rolling and complete rolling steps also need to be performed separately, resulting in cumbersome process connections.

[0004] In summary, the existing decentralized processing model has become the core issue restricting the quality and efficiency improvement of the three-fold hinge industry. In the current processing model, the multi-equipment, multi-step processing significantly increases production input and operating costs. The procurement, installation, and maintenance costs of multiple pieces of equipment, such as bending machines, pre-rolling machines, and rolling machines, are high, requiring more production space and raising the industry's entry barriers. Furthermore, the decentralized process makes it difficult to synchronize production cycles. Positioning deviations and surface scratches are prone to occur during the transfer of the mother hinge between multiple machines, affecting processing accuracy and product qualification rate, reducing production efficiency, and failing to meet the needs of large-scale production. In addition, existing equipment is non-standard equipment designed for a single process. For different specifications of mother hinges, the molds, tooling, and processing parameters of multiple machines need to be adjusted separately, resulting in long changeover cycles, poor flexibility, and difficulty in adapting to the multi-specification, small-batch production needs of the customized door and window market. Currently, there is no integrated processing equipment in the industry that can combine the entire process of bending, pre-rolling, and rolling of the mother leaf. This makes it difficult to meet the existing market demand and the core needs of the industry to reduce costs, increase efficiency, and improve product quality. Therefore, it is necessary for us to design a combined processing machine tool for the production of door and window hinges. Summary of the Invention

[0005] Therefore, it is necessary to provide a combined processing machine tool for the production of door and window hinges to address the existing technical problems.

[0006] To solve the problems of the prior art, the technical solution adopted by the present invention is as follows: A combination processing machine tool for manufacturing door and window hinges includes a machine base for operation, and further includes: A step is set in the middle of the machine. A clamp for positioning the hinge mother is set at the upper end of the step. Tooth seats are slidably set on both sides of the step. A rolling platform for rolling the hinge end is adjustable in the middle of the two tooth seats. A large arc groove for the initial bending of the hinge end is opened at the end of the rolling platform near the step. A small arc groove for rolling the bending part of the hinge is opened next to the large arc groove. A pressure head is slidably installed above the step to bend the hinge. The pressure head assists in pressing the upper end of the hinge when it is initially bent at the end. The middle of the platform is equipped with a support mechanism to limit the hinge during the bending and rolling process. The support mechanism includes two support plates that are rotatably connected to the platform. A baffle is adjustable on the side of the two support plates that is close to each other to limit and tighten the bent part of the hinge.

[0007] Furthermore, the support mechanism includes a first motor located next to the platform, the output end of the first motor being coaxially fixed to a main shaft, and the main shaft having two first bevel gears symmetrically arranged along the axial direction. One end of the pallet is formed with an arc-shaped part, and a second bevel tooth is fixedly connected to the arc-shaped part along the same axis. The second bevel tooth meshes with the first bevel tooth.

[0008] Furthermore, a receiving plate fixed to the step is provided on one side of the two pallets that are close to each other, and a sealing ring is fitted on both sides of the receiving plate. Each of the two pallets has a slot on the side near the receiving plate. When the pallet rotates to the side of the receiving plate, the sealing ring is interference-fitted with the slot.

[0009] Furthermore, the second bevel gear is coaxially fixed to the first gear, and the two first gears mesh with racks on their adjacent sides. The racks are slidably connected to the step and fixedly connected to the baffle. The baffle is fixedly connected to pins at both ends, and the pins are slidably connected to the steps. Each pin is fitted with a spring, one end of which is fixedly connected to the baffle and the other end is fixedly connected to the steps.

[0010] Furthermore, limit seats are provided on both sides of the step, and the two ends of the step are fixedly connected to the limit seats. A guide rail is fixedly connected to the side of the limit seat near the tooth seat, and the tooth seat and the guide rail are slidably connected. Each gear seat has a pneumatic pull rod on both sides. The fixed end of the pneumatic pull rod is fixedly connected to the limit seat, and the output end is fixedly connected to the gear seat.

[0011] Furthermore, a gear ring is rotatably provided in the middle of the gear seat, and a support is fixedly connected to the side of the gear ring near the rolling stage, with the rolling stage and the support being slidably connected. A second motor is provided on the side of the gear base, and a second gear is fixedly connected to the output end of the second motor. The second gear meshes with the gear ring.

[0012] Furthermore, a first cylinder is provided on the side of the support table near the rolling stage. The fixed end of the first cylinder is fixedly connected to the support table, and the output end is fixedly connected to the rolling stage.

[0013] Furthermore, a carrier plate is provided at the upper end of the pressure head, and the carrier plate is fixedly connected to the two pressure heads. A second cylinder is provided above the carrier plate. The fixed end of the second cylinder is fixedly connected to the two limit seats through a partition, and the output end is fixedly connected to the carrier plate. The second cylinder is equipped with damping rods on both sides. The fixed end of the damping rod is fixed to the partition plate, and the movable end is fixed to the carrier plate.

[0014] Furthermore, the fixture includes two third cylinders, which are located on the side of the step away from the baffle. A cover plate is provided on the side of the third cylinders near the step. The end of the cover plate is hinged to the step, and two hanging ears are formed on the upper end of the cover plate. The fixed ends of the two third cylinders are respectively hinged to the stepped platform, and the output ends are respectively hinged to the two lugs. When the output ends of the two third cylinders extend, the cover plate deflects towards the upper part of the stepped platform.

[0015] Furthermore, an anti-slip pad is fixed to the side of the cover plate near the upper part of the step.

[0016] The beneficial effects of this invention compared to the prior art are: Firstly, this solution completes the entire process of pre-rolling, bending, and final rolling in a single machine tool setup. The entire process uses the stepped platform as the sole machining reference, completely eliminating the reference deviation problem caused by multiple equipment transfers and multiple setups. This effectively ensures the form and position tolerances of the bending end face and the inner hole of the rolled circle. At the same time, the processing sequence is optimized. First, the springback stress of the sheet metal is released by pre-rolling through a large arc groove, and then bending and final rolling are performed. This fundamentally avoids the springback deformation problem of the rolled circle after bending. With the bidirectional limiting of the pressure head and the support plate in the pre-rolling stage, the workpiece displacement is constrained throughout the process, eliminating defects such as surface scratches and bump deformation, and greatly improving the product qualification rate and performance stability. Secondly, this solution integrates the entire process of bending, pre-rolling, and final rolling into a single combined processing machine, completely replacing the existing sequential processing mode of multiple independent equipment such as bending machines, pre-rolling machines, and rolling machines. This significantly reduces equipment procurement, production site occupation, and daily operation and maintenance costs, effectively lowering the industry entry barrier. It achieves continuous automated operation of the entire process of pre-rolling and pressing, end pre-rolling, station switching, end bending, and final pressing and rolling, without the need for manual intervention in process switching and workpiece transfer. The processing cycle of each process is completely synchronized, completely solving the problems of process waiting and work-in-process backlog in sequential processing. The production cycle of a single workpiece is greatly shortened. At the same time, the synchronous feeding of the double-sided rolling table can complete the synchronous processing of both ends of the hinge at the same time. Compared with single-end sequential processing, the production efficiency is doubled, perfectly adapting to the needs of large-scale mass production. Attached Figure Description

[0017] Figure 1 This is a three-dimensional structural diagram of an embodiment; Figure 2 This is a front view of the limiting seat and the toothed seat in the embodiment; Figure 3 This is a front view of the baffle, pressure head, and rolling frustum in the embodiment; Figure 4 This is a three-dimensional structural diagram of the stepped platform, limiting seat, and toothed seat in the embodiment; Figure 5 This is an exploded three-dimensional structural diagram of the gear ring and the support platform in the embodiment; Figure 6 yes Figure 5 Enlarged view of the structure at point A in the middle; Figure 7 This is a three-dimensional structural diagram of the pressure head and the rolling frustum during hinge pre-winding in the embodiment; Figure 8 This is a three-dimensional structural diagram of the pressure head and the rolling frustum during hinge bending and final winding in the embodiment; Figure 9 This is an exploded three-dimensional structural diagram of the steps and cover plate in the embodiment.

[0018] The numbers on the map are: 1. Machine base; 2. Loading mechanism; 3. First motor; 4. Main shaft; 5. First bevel gear; 6. Second bevel gear; 7. Support plate; 8. Slot; 9. Arc-shaped part; 10. Receiving plate; 11. Sealing ring; 12. First gear; 13. Rack; 14. Baffle; 15. Spring; 16. Pin; 17. Gear seat; 18. Step; 19. Limit seat; 20. Pneumatic pull rod; 21. Guide rail; 22. Second motor; 23. Second gear; 24. Gear ring; 25. Support platform; 26. Rolling platform; 27. Large arc groove; 28. Small arc groove; 29. ​​First cylinder; 30. Second cylinder; 31. Pressure head; 32. Damping rod; 33. Carrier plate; 34. Clamp; 35. Third cylinder; 36. Cover plate; 37. Hanging lug; 38. Anti-slip pad. Detailed Implementation

[0019] To further understand the features, technical means, and specific objectives and functions achieved by the present invention, the present invention will be described in further detail below with reference to the accompanying drawings and specific embodiments.

[0020] refer to Figures 1 to 9 A combination processing machine tool for producing door and window hinges, including a machine base 1 for operation, and further comprising: A step 18 is set in the middle of the machine base 1. A clamp 34 for positioning the hinge mother page is set at the upper end of the step 18. A toothed seat 17 is slidably set on both sides of the step 18. A rolling table 26 for rolling the hinge end is adjustablely set in the middle of the two toothed seats 17. A large arc groove 27 for the initial bending of the hinge end is opened at the end of the rolling table 26 near the step 18. A small arc groove 28 for rolling the bending part of the hinge is opened on the side of the large arc groove 27. A pressure head 31 for bending the hinge is slidably disposed above the step 18. The pressure head 31 assists in pressing the upper end of the hinge when the hinge end is initially bent. The middle part of the step 18 is provided with a support mechanism 2 to limit the hinge during the bending and rolling process. The support mechanism 2 includes two support plates 7 that are rotatably connected to the step 18. A baffle 14 is adjustablely provided on the side of the two support plates 7 that limits and abuts the bent part of the hinge.

[0021] During operation, in the hinge mother page clamping and positioning and end pre-rolling forming stages, the machine tool uses the step 18 in the middle of the machine table 1 as the sole processing reference. The clamp 34 at the upper end of the step 18 completes the precise clamping of the hinge mother page to be processed, so that the end of the mother page to be processed extends horizontally out of the processing edge of the step 18, establishing a unified processing reference throughout the entire process. Subsequently, the pressure head 31 above the step 18 descends at a constant speed to the upper end face of the mother page, applying a constant vertical clamping force to complete the workpiece limiting. The two support plates 7 of the support mechanism 2 in the middle of the step 18 rotate synchronously to below the extended end of the mother page, and the adjustable baffle 14 completes the end lateral limiting, forming a two-way constraint where the pressure head 31 presses upward from top to bottom and the support plates 7 support downward from bottom to top, completely avoiding workpiece warping and movement during the pre-rolling process. Then, the toothed seats 17 on both sides of the step 18 drive the rolling stage 26 to move to the side of the step 18. The large arc groove 27 at the front end of the rolling stage 26 precisely fits the protruding end of the mother leaf. Then the rolling stage 26 moves closer to the step 18. At this time, the rolling stage 26 completes the initial pre-rolling of the hinge end through a stable horizontal feed thrust, so that the hinge end forms a regular arc profile, releasing the springback stress of the board in advance, laying a precision foundation for the subsequent bending and final rolling processes.

[0022] After the pre-winding process is completed, the rolling table 26 moves to directly below the pre-wound end of the mother page, completing the deviation-free switching of the processing station. When the rolling table 26 moves, it triggers the two support plates 7 of the support mechanism 2 to rotate to both sides of the step 18 to avoid it, completely freeing up the bending downward space at the end of the mother page and preventing structural interference during the bending process. Then, the pressure head 31 above the step 18 descends at a set feed speed, applying a vertical bending force to the part of the mother page that extends out of the step 18. Using the edge of the step 18 as a rigid bending fulcrum, the end of the mother page is precisely bent at 90 degrees, forming the L-shaped load-bearing structure of the mother page. The entire bending process does not require secondary clamping and reference switching. It relies on the unified reference of the pre-winding stage to ensure the perpendicularity tolerance between the bending end face and the main body of the mother page. At the same time, the end after pre-winding is free from deformation and displacement, providing a precise forming foundation for the final winding process.

[0023] In the final pressing, rolling, shaping, and finished product resetting and unloading stage, after the bending process is completed, the gear seat 17 drives the rolling table 26 to complete the vertical fine-tuning and positioning, so that the small arc groove 28 on the rolling table 26 is precisely aligned with the pre-rolled part of the L-shaped end of the mother page. Then the rolling table 26 moves from bottom to top. At this time, the rolling table 26 uses the standard inner diameter arc contour of the small arc groove 28 to perform final pressing and rolling of the pre-rolled part, strictly controlling the inner diameter tolerance, roundness and coaxiality of the rolling, and completing the precise forming of the hinge mother page hinge bushing.

[0024] After processing, the pressure head 31 moves upward and resets to the initial position, the gear seat 17 drives the rolling table 26 to return to the initial feed position, the support plate 7 of the support mechanism 2 rotates and resets, the clamp 34 is unlocked and released, and the hinge mother page that has completed the entire process of clamping can be removed. The whole process realizes the integrated continuous processing of pre-rolling, bending and final rolling, which completely solves the problems of reference deviation and low efficiency of multi-equipment sequential processing.

[0025] To ensure that when the hinge end needs to be bent for the first time, the two support plates 7 rotate to the lower end of the hinge to support it, and when the hinge needs to be bent, the two support plates 7 rotate to the side of the step 18 to avoid the bending of the hinge, the following features are also provided: like Figure 1 , Figure 2 , Figure 8 and Figure 9 As shown, the support mechanism 2 includes a first motor 3 disposed on the side of the step 18. The output end of the first motor 3 is coaxially fixed to the main shaft 4. The main shaft 4 is symmetrically arranged with two first bevel teeth 5 along the axial direction. One end of the pallet 7 is formed with an arc-shaped part 9, and the arc-shaped part 9 is coaxially fixed with a second bevel tooth 6, which meshes with the first bevel tooth 5.

[0026] Before the pre-winding process at the hinge end begins, the first motor 3 drives the main shaft 4 to rotate. Through the symmetrically arranged first bevel gear 5, it synchronously drives the second bevel gear 6 on both sides to engage and transmit power. This drives the two support plates 7 to rotate synchronously inward to directly below the extended end of the hinge, providing stable bottom support for the hinge end. This, together with the pressure head 31, forms a bidirectional limit at both the top and bottom. When the pre-winding is completed and the bending process is about to begin, the first motor 3 drives the main shaft 4 to rotate in the opposite direction. Through the engagement of the bevel gears, it drives the two support plates 7 to rotate synchronously to both sides of the step 18 to avoid the bending process. This completely clears the downward bending space at the hinge end, thoroughly preventing structural interference between the support plates 7 and the workpiece during the bending process, and ensuring the synchronicity and accuracy of the support and avoidance actions of the support plates 7.

[0027] When the support plate 7 is used to support the lower end of the hinge, since the upper end of the hinge will be subjected to the downward force of the pressure head 31, the support plate 7 is further provided with the following features to prevent it from bending along the rotation point: like Figure 9 As shown, a receiving plate 10 fixedly connected to the step 18 is provided on one side of the two pallets 7 that are close to each other, and a sealing ring 11 is respectively fitted on both sides of the receiving plate 10. Each of the two pallets 7 has a slot 8 on the side near the receiving plate 10. When the pallet 7 rotates to the side of the receiving plate 10, the sealing ring 11 is interference-fitted with the slot 8.

[0028] When the pallet 7 rotates to the lower support position of the hinge, the slot 8 of the pallet 7 precisely engages with the end of the receiving plate 10. The sealing ring 11 at the end of the receiving plate 10 forms an interference fit with the slot 8. The receiving plate 10 provides rigid auxiliary support for the pallet 7, dispersing the bending moment borne by the rotation point of the pallet 7 when the pressure head 31 presses down. This completely avoids bending and deformation of the pallet 7 along the rotation point during the support process, ensuring the stability of the pallet 7 during the pre-rolling process. At the same time, the sealing ring 11 can eliminate the fit gap between the slot 8 and the receiving plate 10, preventing the pallet 7 from shaking during support and improving the workpiece positioning accuracy.

[0029] To ensure that the baffle 14 can limit the movement of the bent hinge, the following features are also provided: like Figure 9 As shown, the second bevel gear 6 is coaxially fixed to the first gear 12, and the two first gears 12 are respectively meshed with racks 13 on the side that are close to each other. The racks 13 are slidably connected to the step 18, and the racks 13 are fixedly connected to the baffle 14. Pins 16 are fixedly connected to both ends of the baffle 14. The pins 16 are slidably connected to the step 18. A spring 15 is sleeved on the outside of each pin 16. One end of the spring 15 is fixedly connected to the baffle 14 and the other end is fixedly connected to the step 18.

[0030] After the bending process is completed, when the support plate 7 rotates to avoid the hinge during the bending process, the second bevel gear 6 synchronously drives the coaxial first gear 12 to rotate. The first gear 12 meshes with and drives the rack 13 to slide horizontally along the step 18, thereby driving the baffle 14 to move towards the end of the hinge, so that the baffle 14 can press against the bent edge of the hinge during the bending process, completing the limit at the bent end of the hinge. During this process, the spring 15 and the pin 16 cooperate to provide stable limit for the movement of the baffle 14.

[0031] To enable vertical position adjustment of the two toothed seats 17 so that the large arc groove 27 and small arc groove 28 of the rolling stage 26 can be aligned with the end of the hinge, the following features are specifically provided: like Figure 3 and Figure 4 As shown, limit seats 19 are provided on both sides of the step 18. The two ends of the step 18 are fixedly connected to the limit seats 19. A guide rail 21 is fixedly connected to the side of the limit seat 19 near the tooth seat 17. The tooth seat 17 and the guide rail 21 are slidably connected. Each toothed seat 17 has a pneumatic pull rod 20 on both sides. The fixed end of the pneumatic pull rod 20 is fixedly connected to the limit seat 19, and the output end is fixedly connected to the toothed seat 17.

[0032] During the switching process between pre-winding, bending, and final winding, the pneumatic pull rod 20 can drive the toothed seat 17 to slide precisely back and forth in the vertical direction along the guide rail 21 on the limit seat 19, thereby adjusting the vertical height of the rolling stage 26. This ensures that the large arc groove 27 of the rolling stage 26 is precisely aligned with the horizontally extended hinge end during the pre-winding process, and the small arc groove 28 is precisely aligned with the L-shaped hinge end after bending during the final winding process. This adapts to the hinge processing requirements of different sheet thicknesses and different bending sizes, ensuring the fitting accuracy between the arc groove and the workpiece, and improving the forming quality of pre-winding and rolling.

[0033] To enable the movement of the frustum of roll at position 26, the following features were specifically designed: like Figure 4 As shown, a gear ring 24 is rotatably provided in the middle of the gear seat 17, and a support 25 is fixedly connected to the side of the gear ring 24 near the rolling platform 26. The rolling platform 26 and the support 25 are slidably connected. A second motor 22 is provided on the side of the gear seat 17. A second gear 23 is fixedly connected to the output end of the second motor 22. The second gear 23 meshes with the gear ring 24.

[0034] After the pre-winding process is completed, the second motor 22 drives the second gear 23 to rotate, which drives the support table 25 to rotate through the meshing transmission of the gear ring 24. This adjusts the position of the rolling table 26, so that the rolling table 26 switches from the pre-winding station where the large arc groove 27 is aligned with the workpiece to the final winding station where the small arc groove 28 is aligned with the workpiece. This achieves a deviation-free switch between the pre-winding and final winding stations, eliminating the need for secondary adjustment of the workpiece position and ensuring the uniformity of the processing benchmark. At the same time, it can adapt to the processing requirements of hinges with different bending angles, improving the processing flexibility of the machine tool.

[0035] To enable the movement of the frustum 26, the following features are specifically designed: like Figure 6 As shown, a first cylinder 29 is provided on the side of the support 25 near the rolling stage 26. The fixed end of the first cylinder 29 is fixedly connected to the support 25, and the output end is fixedly connected to the rolling stage 26.

[0036] In the pre-winding and final-winding processes, the first cylinder 29 can drive the rolling table 26 to perform precise horizontal reciprocating feed along the support table 25, providing a stable feed thrust for the pre-winding and rolling processes, accurately controlling the pre-winding forming amount of the large arc groove 27 and the rolling inner diameter of the small arc groove 28, avoiding workpiece deformation caused by excessive feed amount and incomplete forming caused by insufficient feed amount, ensuring the tolerance accuracy of the rolling size, and at the same time, the initial position of the rolling table 26 can be quickly adjusted to adapt to the processing requirements of hinge ends of different lengths.

[0037] To enable the movement of the pressure head 31, the following features are specifically designed: like Figure 3 and Figure 5As shown, a carrier plate 33 is provided at the upper end of the pressure head 31. The carrier plate 33 is fixedly connected to the two pressure heads 31. A second cylinder 30 is provided above the carrier plate 33. The fixed end of the second cylinder 30 is fixedly connected to the two limit seats 19 through a partition, and the output end is fixedly connected to the carrier plate 33. Damping rods 32 are provided on both sides of the second cylinder 30. The fixed end of the damping rod 32 is fixedly connected to the partition plate, and the movable end is fixedly connected to the carrier plate 33.

[0038] In the pre-rolling process, the second cylinder 30 drives the carrier plate 33 downward, which in turn drives the pressure head 31 to descend at a constant speed to the upper end face of the hinge, applying a constant vertical clamping force to complete the auxiliary clamping and limiting of the workpiece. In the bending process, the second cylinder 30 drives the carrier plate 33 to descend at a set speed, which in turn drives the pressure head 31 to apply a stable vertical bending force to the extended end of the hinge, completing a precise 90-degree bend at the end of the hinge.

[0039] During the above process, the damping rod 32 can buffer the downward and upward movements of the pressure head 31 throughout the process, preventing the pressure head 31 from impacting the workpiece due to excessive downward speed, and ensuring the stability of the pressing and bending process. At the same time, the damping rods 32 on both sides can ensure the synchronicity of the downward movement of the two ends of the pressure head 31, and avoid the bending angle deviation caused by the tilt of the pressure head 31.

[0040] To further elaborate on the specific structure of fixture 34, the following features are also provided: like Figure 4 , Figure 8 and Figure 9 As shown, the clamp 34 includes two third cylinders 35. The two third cylinders 35 are located on the side of the step 18 away from the baffle 14. A cover plate 36 is provided on the side of the third cylinder 35 near the step 18. The end of the cover plate 36 is hinged to the step 18. Two hanging ears 37 are formed on the upper end of the cover plate 36. The fixed ends of the two third cylinders 35 are respectively hinged to the step 18, and the output ends are respectively hinged to the two lugs 37. When the output ends of the two third cylinders 35 extend, the cover plate 36 deflects towards the upper end of the step 18.

[0041] During hinge mother-page clamping, the output end of the third cylinder 35 extends, driving the cover plate 36 to deflect around the hinge point towards the upper end of the step 18 via the lug 37. This causes the cover plate 36 to press firmly against the upper surface of the hinge mother-page, working in conjunction with the step 18 to rigidly clamp and fix the hinge body. After processing, the output end of the third cylinder 35 retracts, causing the cover plate 36 to deflect in the opposite direction and lift, thus unlocking the hinge. This enables rapid clamping and unlocking of the hinge, improving loading and unloading efficiency. Furthermore, the hinged cover plate 36 structure can adapt to the clamping requirements of hinge mother-pages of different thicknesses.

[0042] To improve the friction between the cover plate 36 and the hinge, the following features are specifically provided: like Figure 9 As shown, an anti-slip pad 38 is fixedly connected to the side of the cover plate 36 near the upper end of the step 18. During the process of the cover plate 36 pressing the hinge mother page, the anti-slip pad 38 at the lower end of the cover plate 36 directly adheres to the hinge surface, greatly increasing the friction between the cover plate 36 and the hinge, completely preventing the hinge body from shifting during pre-rolling, bending and rolling processes, ensuring the stability of the processing benchmark. At the same time, the anti-slip pad 38 can prevent the rigid pressing of the cover plate 36 from scratching the hinge surface, ensuring the appearance quality of the finished product.

[0043] The detailed working principle of this device is as follows: In the initial state of the machine tool, the cover plate 36 of the fixture 34 is in the lifted and unlocked state, the pressure head 31 is in the upward reset position, the two side gear seats 17 drive the rolling table 26 to the initial position away from the step 18, the two support plates 7 of the support mechanism 2 are in the clearance position that opens to both sides, and all drive components are in the reset and ready-to-start state.

[0044] Before processing, based on the thickness of the sheet metal, bending length, and inner diameter of the rolled hinge mother page, the operator first pre-adjusts the vertical height of the gear seat 17 using the pneumatic pull rod 20 and pre-adjusts the initial feed position of the rolling stage 26 using the first cylinder 29, thus completing the machine tool parameter calibration. Then, the hinge mother page is placed horizontally on the upper surface of the step 18, so that the end to be processed extends horizontally beyond the processing edge of the step 18. The third cylinder 35 of the fixture 34 is activated, causing the cover plate 36 to deflect and press against the hinge body. The anti-slip pad 38 enhances the pressing friction, completing the workpiece clamping in one operation and establishing a unified processing benchmark for the entire process.

[0045] The pre-winding process then begins. At this time, the second cylinder 30 drives the carrier plate 33 to move the pressure head 31 downward, pressing the upper surface of the hinge to form a vertical limit. Then, the first motor 3 pneumatically drives the two support plates 7 to rotate inward synchronously to below the extended end of the hinge through the main shaft 4 and bevel gear transmission. The slot 8 engages with the receiving plate 10 to form a rigid support. Subsequently, the first cylinder 29 drives the rolling stage 26 to feed horizontally, and the large arc groove 27 fits against the end of the hinge to complete the initial pre-winding and release the springback stress of the board.

[0046] After pre-winding, the first cylinder 29 drives the rolling table 26 to retract, and the second motor 22 drives the support table 25 to rotate through the gear ring 24, switching the small arc groove 28 to the processing station. Simultaneously, the first motor 3 drives the support plate 7 to rotate and avoid the bending, completely freeing up the downward bending space. At the same time, the second bevel gear 6 drives the first gear 12 and rack 13 to drive the baffle 14 to press against the side of the hinge to complete the lateral limit and form an auxiliary anti-movement constraint. Then, the second cylinder 30 drives the pressure head 31 to descend at a constant speed, using the edge of the step 18 and the baffle 14 as fulcrums to apply bending force to the protruding end of the hinge, completing a precise 90-degree bend and forming an L-shaped load-bearing structure.

[0047] After bending, the pneumatic pull rod 20 drives the tooth seat 17 to make vertical fine adjustments, so that the small arc groove 28 is precisely aligned with the pre-rolled part of the L-shaped end of the hinge. The first cylinder 29 drives the rolling table 26 to feed precisely, and the final pressing and rolling is completed through the small arc groove 28. The inner diameter, roundness and coaxiality of the rolling are strictly controlled to complete the final forming of the hinge mother page.

[0048] After processing is completed, all drive components are reset synchronously, and the cover plate 36 of the fixture 34 is lifted and unlocked, so that the finished product that has completed the entire process in one clamping can be taken out. The whole process realizes the integrated continuous processing of pre-rolling, bending and final rolling, without the need for secondary clamping and transfer of multiple equipment.

[0049] The above embodiments only illustrate one or more implementations of the present invention, and their descriptions are relatively specific and detailed, but they should not be construed as limiting the scope of the present invention. It should be noted that those skilled in the art can make various modifications and improvements without departing from the concept of the present invention, and these all fall within the protection scope of the present invention. Therefore, the protection scope of this patent should be determined by the appended claims.

Claims

1. A combined processing machine tool for producing door and window hinges, comprising a machine base (1) for operation, characterized in that, Also includes: A step (18) is set in the middle of the machine base (1). A clamp (34) for positioning the hinge mother is set at the upper end of the step (18). A toothed seat (17) is slidably set on both sides of the step (18). A rolling platform (26) for rolling the hinge end is adjustablely set in the middle of the two toothed seats (17). A large arc groove (27) for the initial bending of the hinge end is opened at the end of the rolling platform (26) near the step (18). A small arc groove (28) for rolling the hinge bending point is opened on the side of the large arc groove (27). A pressure head (31) for bending the hinge is slidably provided above the step (18). The pressure head (31) assists in pressing the upper end of the hinge when the hinge is initially bent. The middle part of the step (18) is provided with a support mechanism (2) to limit the hinge during the bending and rolling process. The support mechanism (2) includes two support plates (7) that are rotatably connected to the step (18). A baffle (14) is adjustablely provided on the side of the two support plates (7) that limits and abuts the bent part of the hinge.

2. The combined processing machine tool for producing door and window hinges according to claim 1, characterized in that, The support mechanism (2) includes a first motor (3) located on the side of the step (18). The output end of the first motor (3) is coaxially fixed to a main shaft (4). The main shaft (4) has two first bevel teeth (5) symmetrically arranged along the axial direction. One end of the tray (7) is formed with an arc-shaped part (9), and the arc-shaped part (9) is coaxially fixed with a second bevel tooth (6), which meshes with the first bevel tooth (5).

3. A combined processing machine tool for producing door and window hinges according to claim 2, characterized in that, A receiving plate (10) is provided on one side of the two pallets (7) that is close to each other and is fixed to the step (18). A sealing ring (11) is fitted on both sides of the receiving plate (10). Two trays (7) are respectively provided with slots (8) on the side near the receiving plate (10). When the tray (7) rotates to the side of the receiving plate (10), the sealing ring (11) is press-fitted with the slot (8).

4. A combined processing machine tool for producing door and window hinges according to claim 3, characterized in that, The second bevel gear (6) is coaxially fixed to the first gear (12). The two first gears (12) are respectively meshed with racks (13) on the side that are close to each other. The racks (13) are slidably connected to the step (18) and fixed to the baffle (14). The baffle (14) is fixedly connected to the two ends of the baffle (16), and the pin (16) is slidably connected to the step (18). Each pin (16) is fitted with a spring (15), one end of the spring (15) is fixedly connected to the baffle (14), and the other end is fixedly connected to the step (18).

5. A combined processing machine tool for producing door and window hinges according to claim 1, characterized in that, Limit seats (19) are provided on both sides of the step (18). The two ends of the step (18) are fixedly connected to the limit seats (19). A guide rail (21) is fixedly connected to the side of the limit seat (19) near the tooth seat (17). The tooth seat (17) and the guide rail (21) are slidably connected. Each tooth seat (17) is provided with a pneumatic pull rod (20) on both sides. The fixed end of the pneumatic pull rod (20) is fixedly connected to the limit seat (19), and the output end is fixedly connected to the tooth seat (17).

6. A combined processing machine tool for producing door and window hinges according to claim 5, characterized in that, A gear ring (24) is rotatably provided in the middle of the gear seat (17). A support platform (25) is fixedly connected to the side of the gear ring (24) near the rolling platform (26). The rolling platform (26) and the support platform (25) are slidably connected. A second motor (22) is provided on the side of the gear seat (17). The output end of the second motor (22) is fixedly connected to a second gear (23), which meshes with the gear ring (24).

7. A combined processing machine tool for producing door and window hinges according to claim 6, characterized in that, A first cylinder (29) is provided on the side of the support (25) near the rolling stage (26). The fixed end of the first cylinder (29) is fixedly connected to the support (25), and the output end is fixedly connected to the rolling stage (26).

8. A combined processing machine tool for producing door and window hinges according to claim 5, characterized in that, A carrier plate (33) is provided at the upper end of the pressure head (31). The carrier plate (33) is fixedly connected to the two pressure heads (31). A second cylinder (30) is provided above the carrier plate (33). The fixed end of the second cylinder (30) is fixedly connected to the two limit seats (19) through a partition, and the output end is fixedly connected to the carrier plate (33). The second cylinder (30) is provided with damping rods (32) on both sides. The fixed end of the damping rod (32) is fixed to the partition plate, and the movable end is fixed to the carrier plate (33).

9. A combined processing machine tool for producing door and window hinges according to claim 1, characterized in that, The clamp (34) includes two third cylinders (35), which are located on the side of the step (18) away from the baffle (14). A cover plate (36) is provided on the side of the third cylinder (35) close to the step (18). The end of the cover plate (36) is hinged to the step (18), and two hanging ears (37) are formed on the upper end of the cover plate (36). The fixed ends of the two third cylinders (35) are respectively hinged to the step (18), and the output ends are respectively hinged to the two lugs (37). When the output ends of the two third cylinders (35) extend, the cover plate (36) deflects towards the upper end of the step (18).

10. A combined processing machine tool for producing door and window hinges according to claim 9, characterized in that, An anti-slip pad (38) is fixed to the side of the cover plate (36) near the upper end of the step (18).

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