Quick die changing device for hydraulic bending machine

Abstract

The utility model discloses a quick die changing device for hydraulic bending machine belongs to hydraulic bending machine technical field. Mainly include frame, one side fixed mounting of frame has the support frame, the top surface fixed mounting of support frame has the die changing subassembly, through the horizontal board in die changing subassembly is the basic installation structure, first hand wheel, threaded rod and first movable clamping plate constitute linkage adjusting mechanism, and the operator only needs to rotate first hand wheel, can pass threaded rod and the threaded drive of first side plate, convert the rotary motion into the horizontal sliding of first movable clamping plate, change the interval of first fixed clamping plate rapidly, make the dismounting time of mould greatly shorten, especially in small batch, many specifications plate processing scene, can significantly reduce the equipment downtime, prolong effective processing time, improve the continuity of production line, and then reduce the production time cost of unit product.

Description

Technical Field

[0001] This application relates to the field of hydraulic bending machine technology, specifically a quick mold changing device for a hydraulic bending machine. Background Technology

[0002] Hydraulic bending machines are key equipment in the metal processing field. They are mainly used to apply hydraulic driving force to various metal sheets and, through matching molds, make the sheets bend, fold, and perform other forming processes along a preset trajectory. They are suitable for processing metal sheets of different thicknesses and specifications and are widely used in industries such as machinery manufacturing, automotive parts production, building hardware processing, and home appliance casing manufacturing.

[0003] However, in actual production, when it is necessary to process plates with different bending angles and shapes, the machine must be stopped and the bolts or clips fixing the molds must be removed one by one using tools. The old molds must be removed and the positions of the new molds must be calibrated. The molds must then be fixed point by point with fasteners. During this process, the disassembly and assembly of a single set of molds often requires the cooperation of multiple operators, and the calibration and positioning need to be repeatedly adjusted, which takes a long time. Especially in the scenario of processing small batches of plates with multiple specifications, frequent mold changing operations will cause the equipment to be in a downtime state for a long time, which will significantly reduce the effective processing time, seriously reduce the continuity of the production line, and increase the production time cost per unit product.

[0004] Furthermore, with the increasing diversification of production demands in the manufacturing industry, the same production line often needs to process metal sheets of various specifications. However, the existing equipment's mold components lack a flexible and adjustable sheet positioning structure, requiring the customization of corresponding special molds for sheets of different thicknesses. On the one hand, customizing multiple sets of molds incurs high mold design and manufacturing costs; on the other hand, storing multiple sets of molds requires additional space, increasing warehousing and management costs. Moreover, changing to molds of different specifications involves not only the cumbersome mold-changing process but also additional time spent debugging the mold's compatibility with the equipment, further reducing the equipment's responsiveness to diverse processing needs and limiting its applicability. Utility Model Content

[0005] The purpose of this invention is to provide a quick mold changing device for a hydraulic bending machine to solve the problems mentioned in the background art.

[0006] The technical solution adopted by this application to solve its technical problem is:

[0007] A quick mold changing device for a hydraulic bending machine includes a frame, a support frame fixedly mounted on one side of the frame, and a mold changing assembly fixedly mounted on the top surface of the support frame. The mold changing assembly includes a horizontal plate, a first side plate, a first handwheel, a threaded rod, a first movable clamping plate, and a first fixed clamping plate. The top surface of the support frame is fixedly mounted to the horizontal plate. The first side plate is welded to one side of the top surface of the horizontal plate, and the first fixed clamping plate is welded to the other side of the top surface of the horizontal plate. The first movable clamping plate is slidably connected to the top surface of the horizontal plate. The side wall of the movable clamping plate is rotatably mounted to one end of the threaded rod. The side wall of the threaded rod is threadedly connected to a threaded hole opened on the first side plate, and the other end of the threaded rod is connected to the first handwheel.

[0008] A mold assembly is clamped and fixed between the first movable clamping plate and the first fixed clamping plate.

[0009] Preferably, the mold assembly includes a fixed plate, a second fixed clamping plate, a second movable clamping plate, a second side plate, and a guide mechanism. The fixed plate is fixedly installed between the first fixed clamping plate and the first movable clamping plate. One side of the top surface of the fixed plate is integrally formed with the second side plate, and the other side of the top surface of the fixed plate is fixedly connected to the second fixed clamping plate. The second movable clamping plate is slidably connected between the second side plate and the second fixed clamping plate through the guide mechanism. The gap between the second movable clamping plate and the second fixed clamping plate is a plate mounting groove.

[0010] Preferably, the guiding mechanism includes a guide post and a limiting plate. The side wall of the second side plate has a sliding hole, and the guide post is slidably connected in the sliding hole. One end of the guide post is fixedly connected to both sides of the side wall of the second movable clamping plate, and the other end of the guide post is fixedly connected to the limiting plate.

[0011] Preferably, the two side walls of the fixing plate are provided with clamping grooves, and the tops of the first fixing clamp and the first movable clamp are bent inward to form fixing grooves. The fixing plate is clamped and installed in the first fixing clamp and the first movable clamp through the clamping grooves.

[0012] Preferably, movable plates are slidably mounted on both sides of the frame via hydraulic rods, and a bending tool holder is fixedly mounted on the bottom surface of the movable plates.

[0013] Preferably, fixed seats are fixedly connected to the inner sides of the movable plate, and guide wheels are installed on the fixed seats. Limiting plates are fixedly connected to both sides of the frame, and the guide wheels are slidably connected to the side walls of the limiting plates.

[0014] The beneficial effects of this application are:

[0015] 1. This technical solution uses the horizontal plate in the mold changing assembly as the basic installation structure. The first handwheel, the threaded rod, and the first moving clamping plate form a linkage adjustment mechanism. The operator only needs to turn the first handwheel to convert the rotational motion into the horizontal sliding of the first moving clamping plate through the threaded transmission between the threaded rod and the first side plate. This quickly changes the distance between the moving clamping plate and the first fixed clamping plate, which greatly shortens the mold assembly and disassembly time. Especially in the scenario of processing small batches and multiple specifications of sheet metal, it can significantly reduce equipment downtime, extend effective processing time, improve the continuity of the production line, and thus reduce the production time cost per unit product.

[0016] 2. This technical solution allows for smooth sliding between the second side plate and the second fixed clamping plate via a guiding mechanism. By turning the second handwheel, the operator can flexibly change the width of the plate mounting groove between the second moving clamping plate and the second fixed clamping plate, adapting to plates of different thicknesses and widths to be bent. Only the width of the plate mounting groove needs to be adjusted, eliminating the need for additional adaptation and debugging steps for molds and equipment. This significantly improves the equipment's response speed to diverse processing needs and effectively expands the applicability of the equipment.

[0017] In addition to the purposes, features, and advantages described above, this application has other purposes, features, and advantages. A further detailed description of this application will be provided below with reference to the figures. Attached Figure Description

[0018] The accompanying drawings, which form part of this application, are used to provide a further understanding of this application. The illustrative embodiments and descriptions of this application are used to explain this application and do not constitute an undue limitation of this application. In the drawings:

[0019] Figure 1 This is an overall schematic diagram of a quick mold changing device for a hydraulic bending machine according to the present invention;

[0020] Figure 2 This is a schematic diagram of the mold changing component structure of this utility model;

[0021] Figure 3 This is a schematic diagram of the mold assembly structure of this utility model;

[0022] Figure 4 This is a schematic diagram of the back structure of the frame of this utility model;

[0023] Figure 5 For the present utility model Figure 4 Enlarged structural diagram at point A in the middle.

[0024] The following are the labeling elements in the figure:

[0025] 1. Frame; 2. Support frame; 3. Mold changing assembly; 31. Horizontal plate; 32. First side plate; 33. First handwheel; 34. Threaded rod; 35. First movable clamping plate; 36. First fixed clamping plate; 37. Fixed groove; 4. Mold assembly; 41. Fixed plate; 42. Clamping groove; 43. Second fixed clamping plate; 44. Second movable clamping plate; 45. Second side plate; 46. Guide column; 47. Limiting plate; 48. Second handwheel; 49. Sheet metal mounting groove; 5. Movable plate; 6. Hydraulic rod; 7. Bending tool holder; 8. Fixed seat; 9. Limiting plate; 10. Guide wheel. Detailed Implementation

[0026] It should be noted that, unless otherwise specified, the embodiments and features described in this application can be combined with each other. This application will now be described in detail with reference to the accompanying drawings and embodiments.

[0027] To enable those skilled in the art to better understand the present application, the technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present application, and not all embodiments. Based on the embodiments of the present application, all other embodiments obtained by those skilled in the art without creative effort should fall within the scope of protection of the present application.

[0028] Please see Figure 1-5 The embodiments provided by this utility model are as follows:

[0029] like Figure 1 As shown, a quick mold-changing device for a hydraulic bending machine includes a frame 1. A support frame 2 is fixedly installed on one side of the frame 1. Movable plates 5 are slidably installed on both sides of the frame 1 via hydraulic rods 6. A bending cutter holder 7 is fixedly installed on the bottom surface of the movable plates 5. The frame 1 serves as the mounting base for the entire device, providing stable support for all components. The hydraulic rods 6 on both sides are the power source. When the hydraulic rods 6 extend or retract, they drive the movable plates 5 connected to them to move vertically. The bending cutter holder 7 on the bottom surface of the movable plates 5 moves synchronously with the movable plates 5. The bending cutter holder 7 can be equipped with bending tools, thereby completing the bending process of the sheet metal.

[0030] like Figure 4 and Figure 5As shown, fixed seats 8 are fixedly connected to the inner sides of the movable plate 5, and guide wheels 10 are installed on the fixed seats 8. Limiting plates 9 are fixedly connected to both sides of the frame 1. The guide wheels 10 are slidably connected to the side walls of the limiting plates 9. The fixed seats 8 on the inner side of the movable plate 5 are used to fix the guide wheels 10. The limiting plates 9 on both sides of the frame 1 provide sliding tracks for the guide wheels 10. When the movable plate 5 moves, the guide wheels 10 slide close to the side walls of the limiting plates 9, which constrains the movement direction of the movable plate 5. The cooperation between the guide wheels 10 and the limiting plates 9 plays a guiding and limiting role, which can prevent the movable plate 5 from deviating or shaking during movement.

[0031] like Figure 2 As shown, a mold changing assembly 3 is fixedly installed on the top surface of the support frame 2. The mold changing assembly 3 includes a horizontal plate 31, a first side plate 32, a first handwheel 33, a threaded rod 34, a first movable clamping plate 35, and a first fixed clamping plate 36. The top surface of the support frame 2 is fixedly installed with the horizontal plate 31. The first side plate 32 is welded to one side of the top surface of the horizontal plate 31. The first fixed clamping plate 36 is welded to the other side of the top surface of the horizontal plate 31. The first movable clamping plate 35 is slidably connected to the top surface of the horizontal plate 31. The side wall of the movable clamping plate is rotatably installed with one end of the threaded rod 34. The side wall of the threaded rod 34 is threadedly connected to the threaded hole opened on the first side plate 32. The other end of the threaded rod 34 is connected to the first handwheel 33.

[0032] The mold changing assembly 3 is a structure that enables rapid fixing and disassembly of the mold. The horizontal plate 31 provides the mounting base for the assembly. When the first handwheel 33 is rotated, it will drive the threaded rod 34 connected to it to rotate. Since the threaded rod 34 is threadedly connected to the threaded hole of the first side plate 32, the threaded transmission will convert the rotational motion of the handwheel into the horizontal linear motion of the threaded rod 34. One end of the threaded rod 34 is rotatably connected to the first movable clamping plate 35. When the threaded rod 34 moves, it will push or pull the first movable clamping plate 35 to slide on the top surface of the horizontal plate 31, thereby changing the distance between the first movable clamping plate 35 and the first fixed clamping plate 36, so that the mold assembly 4 can be quickly clamped or released. When the mold assembly 4 needs to be installed, the handwheel is rotated to increase the distance between the two clamping plates. After the mold is placed in, the handwheel is rotated in the opposite direction to reduce the distance, and the mold can be fixed by the clamping force of the two clamping plates. Disassembly can be performed by reversing the operation, without the need for complicated bolt disassembly and other steps, which greatly simplifies the mold assembly and disassembly process, realizes rapid mold changing, and improves the mold changing efficiency and production continuity of the equipment.

[0033] Furthermore, such as Figure 3As shown, a mold assembly 4 is clamped and fixedly installed between the first movable clamping plate 35 and the first fixed clamping plate 36. The mold assembly 4 includes a fixed plate 41, a second fixed clamping plate 43, a second movable clamping plate 44, a second side plate 45, a guide mechanism, and a second handwheel 48. The fixed plate 41 is fixedly installed between the first fixed clamping plate 36 and the first movable clamping plate 35. One side of the top surface of the fixed plate 41 is integrally formed with the second side plate 45, and the other side of the top surface of the fixed plate 41 is fixedly connected to the second fixed clamping plate 43. The second movable clamping plate 44 is slidably connected between the second side plate 45 and the second fixed clamping plate 43 through the guide mechanism. The gap between the second movable clamping plate 44 and the second fixed clamping plate 43 is the plate mounting groove 49.

[0034] The second side plate 45 on the fixed plate 41 provides mounting support for the guide mechanism. The second movable clamping plate 44 can slide smoothly horizontally between the second side plate 45 and the second fixed clamping plate 43 with the help of the guide mechanism. By adjusting the position of the second movable clamping plate 44, the width of the plate mounting groove 49 between it and the second fixed clamping plate 43 can be flexibly changed to match plates of different thicknesses and widths to be bent. The second handwheel 48 works on the same principle as the first handwheel 33. By rotating the second handwheel 48, the threaded rod 34 is driven to rotate in the threaded hole opened on the second side plate 45. The threaded rod 34 is rotatably mounted on the second movable clamping plate 44, thereby flexibly changing the width of the plate mounting groove 49 between it and the second fixed clamping plate 43. By adjusting the width of the mounting groove, the same set of mold components 4 can be adapted to process plates of various specifications, eliminating the need to customize a complete set of molds for different plates and reducing mold costs.

[0035] The guiding mechanism includes a guide post 46 and a limiting plate 47. A sliding hole is provided on the side wall of the second side plate 45, through which the guide post 46 slides. One end of the guide post 46 is fixedly connected to both sides of the side wall of the second movable clamping plate 44, and the other end is fixedly connected to the limiting plate 47. The limiting plate 47 prevents the guide post 46 from disengaging from the sliding hole, thus preventing the second movable clamping plate 44 from falling off due to over-adjustment. The guiding mechanism provides precise guidance for the sliding of the second movable clamping plate 44. The guide post 46 passes through the sliding hole of the second side plate 45, with one end fixed to both sides of the second movable clamping plate 44 and the other end fixed to the limiting plate 47. When the second movable clamping plate 44 is adjusted, the guide post 46 slides synchronously within the sliding hole along with the second movable clamping plate 44. The limiting plate 47 restricts the sliding stroke of the guide post 46, preventing it from disengaging from the sliding hole.

[0036] It is worth noting that the two side walls of the fixing plate 41 are provided with clamping grooves 42. The tops of the first fixed clamping plate 36 and the first movable clamping plate 35 are bent inward to form a fixing groove 37. The fixing plate 41 is clamped and installed in the first fixed clamping plate 36 and the first movable clamping plate 35 through the clamping grooves 42. This structure is an adaptive design to achieve a stable connection between the mold assembly 4 and the mold changing assembly 3. The clamping grooves 42 on both sides of the fixing plate 41 match the fixing grooves 37 formed by the inward bending of the tops of the first fixed clamping plate 36 and the first movable clamping plate 35. During installation, the clamping grooves 42 of the fixing plate 41 are aligned with the fixing grooves 37 of the two clamping plates. Through the clamping force of the two clamping plates in the mold changing assembly 3, the clamping grooves 42 and the fixing grooves 37 are tightly fitted to form an interlocking fixation, which greatly improves the stability of the connection between the mold assembly 4 and the mold changing assembly 3. The interlocking structure can effectively disperse the clamping force and prevent the mold from loosening or shifting due to vibration or force during the bending process, thus ensuring processing safety and accuracy.

[0037] The above description is merely a preferred embodiment of this application and is not intended to limit this application. Various modifications and variations can be made to this application by those skilled in the art. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of this application should be included within the protection scope of this application.

Claims

1. A quick die-changing device for a hydraulic bending machine, comprising a frame (1), characterized in that: A support frame (2) is fixedly installed on one side of the frame (1). A mold changing assembly (3) is fixedly installed on the top surface of the support frame (2). The mold changing assembly (3) includes a horizontal plate (31), a first side plate (32), a first handwheel (33), a threaded rod (34), a first movable clamping plate (35), and a first fixed clamping plate (36). The top surface of the support frame (2) is fixedly installed with the horizontal plate (31). The first side plate (32) is welded to one side of the top surface of the horizontal plate (31). The first fixed clamping plate (36) is welded to the other side of the top surface of the horizontal plate (31). The first movable clamping plate (35) is slidably connected to the top surface of the horizontal plate (31). The side wall of the movable clamping plate is rotatably installed with one end of the threaded rod (34). The side wall of the threaded rod (34) is threadedly connected to the threaded hole opened on the first side plate (32). The other end of the threaded rod (34) is connected to the first handwheel (33). A mold assembly (4) is clamped and fixed between the first movable clamping plate (35) and the first fixed clamping plate (36).

2. The quick die-changing device for a hydraulic bending machine according to claim 1, characterized in that: The mold assembly (4) includes a fixed plate (41), a second fixed clamping plate (43), a second movable clamping plate (44), a second side plate (45), and a guide mechanism. The fixed plate (41) is fixedly installed between the first fixed clamping plate (36) and the first movable clamping plate (35). One side of the top surface of the fixed plate (41) is integrally formed with the second side plate (45), and the other side of the top surface of the fixed plate (41) is fixedly connected to the second fixed clamping plate (43). The second movable clamping plate (44) is slidably connected between the second side plate (45) and the second fixed clamping plate (43) through the guide mechanism. The gap between the second movable clamping plate (44) and the second fixed clamping plate (43) is the plate mounting groove (49).

3. A quick die-changing device for a hydraulic bending machine according to claim 2, characterized in that: The guiding mechanism includes a guide post (46) and a limiting plate (47). The side wall of the second side plate (45) is provided with a sliding hole. The guide post (46) is slidably connected in the sliding hole. One end of the guide post (46) is fixedly connected to both sides of the side wall of the second movable clamping plate (44), and the other end of the guide post (46) is fixedly connected to the limiting plate (47).

4. A quick die-changing device for a hydraulic bending machine according to claim 3, characterized in that: The two side walls of the fixing plate (41) are provided with clamping grooves (42). The tops of the first fixing clamping plate (36) and the first moving clamping plate (35) are bent inward to form a fixing groove (37). The fixing plate (41) is clamped and installed in the first fixing clamping plate (36) and the first moving clamping plate (35) through the clamping grooves (42).

5. A quick die-changing device for a hydraulic bending machine according to claim 4, characterized in that: The frame (1) has movable plates (5) slidably mounted on both sides via hydraulic rods (6), and a bending tool holder (7) is fixedly mounted on the bottom surface of the movable plates (5).

6. A quick die-changing device for a hydraulic bending machine according to claim 5, characterized in that: The inner sides of the movable plate (5) are respectively fixedly connected to fixed seats (8), and guide wheels (10) are installed on the fixed seats (8). Limiting plates (9) are respectively fixedly connected to both sides of the frame (1), and the guide wheels (10) are slidably connected to the side wall of the limiting plate (9).

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