Quick die changing and angle calibration device of numerical control bending machine

Abstract

The utility model belongs to numerical control bending machine field, specifically speaking, it is quick die change and angle calibration device of numerical control bending machine, including support seat, the top of support seat is connected with fixed link, the top of fixed link is connected with top plate, the top of top plate is connected with hydraulic cylinder, the piston rod bottom of hydraulic cylinder is connected with movable plate, the bottom of movable plate is connected with two top supports, through the structural design of support seat, fixed link, top plate, hydraulic cylinder, movable plate, top support, bottom support, top die mounting mechanism and bottom die mounting structure, the function that a plurality of models of moulds were changed has been realized, the problem that single only can replace one model mould has been solved, the efficiency of mould replacement has been improved, can be effectively locked in the structure design of locking mechanism after changing, prevents the problem of accidental rotation, improves the stability when using the mould.

Description

Technical Field

[0001] This utility model relates to the field of CNC bending machines, specifically a rapid mold changing and angle calibration device for CNC bending machines. Background Technology

[0002] CNC bending machines use equipped molds (general or special molds) to bend cold metal sheets into workpieces of various geometric cross-sectional shapes. They are sheet metal forming machines designed for cold-rolled sheet metal processing and are widely used in sheet metal bending processes in industries such as automobiles, aircraft manufacturing, light industry, shipbuilding, containers, elevators, and railway vehicles.

[0003] In the prior art, such as in CN218982884U, an automatic die-changing device for a bending machine is disclosed. It includes a support base, a lifting device installed at the lower end of the support base, a processing table installed at the upper end of the support base, a bending groove opened in the middle of the upper end of the processing table, a support plate installed at the rear of the upper end of the support base, a lower die device installed at the left and right front ends of the support plate, a support frame installed at the middle of the front end of the support plate, and a bending device installed at the lower end of the support frame.

[0004] While the aforementioned patent allows for convenient removal of the bending head from the mounting bracket and processing table support via the lower die device and bending device, facilitating cleaning of the upper and lower dies and enabling replacement of damaged dies as needed, thus improving the device's practicality, and using the lifting device to push the sheet metal out of the bending groove reduces workload and increases processing efficiency, it only allows for changing one type of die at a time. This leads to low efficiency when frequently changing different die types. Therefore, to address these issues, a rapid die changing and angle calibration device for a CNC bending machine is proposed. Utility Model Content

[0005] To overcome the shortcomings of existing technologies, which only allow for the replacement of one type of mold at a time, resulting in low efficiency when frequent replacement of different mold types is required, this utility model proposes a rapid mold changing and angle calibration device for CNC bending machines.

[0006] The technical solution adopted by this utility model to solve its technical problem is as follows: The quick mold changing and angle calibration device for a CNC bending machine of this utility model includes a support base; a fixed rod is connected to the top of the support base, a top plate is connected to the top of the fixed rod, a hydraulic cylinder is connected to the top of the top plate, a movable plate is connected to the bottom of the piston rod of the hydraulic cylinder, two top supports are connected to the bottom of the movable plate, two bottom supports corresponding to the top supports are connected to the top of the support base, a top mold mounting mechanism is installed between the two top supports, and a bottom mold mounting structure is installed between the two bottom supports; The top mold mounting mechanism includes a first support shaft and a first bolt assembly. A first mounting bracket is connected to the surface of the first support shaft. A plurality of first grooves are formed at equal angles on the surface of the first mounting bracket. A top mold of different models is movably connected inside each of the plurality of first grooves. The plurality of top molds are connected to the first mounting bracket through the first bolt assembly. The bottom mold mounting structure includes a second support shaft and a second bolt assembly. A second mounting bracket is connected to the surface of the second support shaft. A plurality of second grooves are formed at equal angles on the surface of the second mounting bracket. Bottom molds of different models are movably connected inside the plurality of second grooves. The plurality of bottom molds are connected to the second mounting bracket through the second bolt assembly.

[0007] Preferably, both the first support shaft and the second support shaft are provided with locking mechanisms. The locking mechanisms include ratchet and limiting block. The limiting block has a through hole inside, and a spiral spring is connected to the inner wall of the through hole. The limiting block is connected to a fixed shaft through the spiral spring.

[0008] Preferably, the ratchet is symmetrically distributed in opposite directions, with the first support shaft passing through both ends of the top bracket and the second support shaft passing through both ends of the bottom bracket.

[0009] Preferably, the fixed shaft is fixed to the side surfaces of the two top supports that are far apart from each other and the side surfaces of the two bottom supports that are far apart from each other.

[0010] Preferably, a plurality of laser emitters are distributed at equal angles on the surface of the first support shaft, and the plurality of laser emitters correspond to the first groove.

[0011] Preferably, the surface of the second support shaft has a plurality of laser receivers corresponding to the second grooves distributed at equal angles, and the plurality of laser receivers cooperate with the plurality of laser emitters.

[0012] The advantages of this utility model are: 1. This utility model, through the structural design of a support base, a fixed rod, a top plate, a hydraulic cylinder, a movable plate, a top bracket, a bottom bracket, a top mold mounting mechanism, and a bottom mold mounting structure, realizes the function of rotating multiple types of molds, solves the problem of only being able to replace one type of mold at a time, and improves the efficiency of mold replacement. At the same time, through the structural design of the locking mechanism, it can effectively lock the mold after rotation, prevent accidental rotation, and improve the stability of the mold during use. 2. Through the structural design of the laser emitter and laser receiver, this utility model realizes the function of easy angle calibration, which is conducive to matching after the top mold and bottom mold are replaced. It solves the problem of misalignment after the top mold and bottom mold are replaced, further improving the efficiency and accuracy of mold replacement. Attached Figure Description

[0013] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0014] Figure 1 This is a top-view three-dimensional structural diagram of the present invention; Figure 2 This is a three-dimensional structural diagram of the present invention viewed from below; Figure 3 This is a schematic diagram of the top mold mounting mechanism of this utility model; Figure 4 This is a schematic diagram of the bottom mold installation mechanism of this utility model.

[0015] In the diagram: 1. Support base; 2. Fixing rod; 3. Top plate; 4. Hydraulic cylinder; 5. Movable plate; 6. Top bracket; 7. Bottom bracket; 8. Top mold mounting mechanism; 801. First support shaft; 802. First mounting bracket; 803. First groove; 804. Top mold; 805. First bolt assembly; 9. Bottom mold mounting structure; 901. Second support shaft; 902. Second mounting bracket; 903. Second groove; 904. Bottom mold; 905. Second bolt assembly; 10. Locking mechanism; 1001. Ratchet; 1002. Limiting block; 1003. Fixing shaft; 11. Laser emitter; 12. Laser receiver. Detailed Implementation

[0016] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the scope of protection of the present utility model.

[0017] Please see Figures 1-4 As shown, a quick mold changing and angle calibration device for a CNC bending machine includes a support base 1; a fixed rod 2 is connected to the top of the support base 1, a top plate 3 is connected to the top of the fixed rod 2, a hydraulic cylinder 4 is connected to the top of the top plate 3, a movable plate 5 is connected to the bottom of the piston rod of the hydraulic cylinder 4, two top supports 6 are connected to the bottom of the movable plate 5, two bottom supports 7 corresponding to the top supports 6 are connected to the top of the support base 1, a top mold mounting mechanism 8 is installed between the two top supports 6, and a bottom mold mounting structure 9 is installed between the two bottom supports 7. The top mold mounting mechanism 8 includes a first support shaft 801 and a first bolt assembly 805. A first mounting bracket 802 is connected to the surface of the first support shaft 801. A plurality of first grooves 803 are equally spaced on the surface of the first mounting bracket 802. Top molds 804 of different models are movably connected inside the plurality of first grooves 803. The plurality of top molds 804 are connected to the first mounting bracket 802 through the first bolt assembly 805. The bottom mold mounting structure 9 includes a second support shaft 901 and a second bolt assembly 905. A second mounting bracket 902 is connected to the surface of the second support shaft 901. A plurality of second grooves 903 are equally spaced on the surface of the second mounting bracket 902. Bottom molds 904 of different models are movably connected inside the plurality of second grooves 903. The plurality of bottom molds 904 are connected to the second mounting bracket 902 through the second bolt assembly 905. During operation, by installing different types of top molds 804 into the inside of the first groove 803 and different types of bottom molds 904 into the inside of the second groove 903, and then by rotating the first support shaft 801 and the second support shaft 901, the top molds 804 and bottom molds 904 can be quickly rotated. This allows for the replacement of multiple types of molds at once, thereby improving the mold replacement efficiency.

[0018] Furthermore, locking mechanisms 10 are provided on the surfaces of the first support shaft 801 and the second support shaft 901. The locking mechanism 10 includes a ratchet 1001 and a limiting block 1002. The limiting block 1002 has a through hole inside, and a spiral spring is connected to the inner wall of the through hole. The limiting block 1002 is connected to a fixed shaft 1003 through the spiral spring. The ratchet 1001 is symmetrically distributed in opposite directions on the two end surfaces of the first support shaft 801 passing through the top bracket 6 and the two end surfaces of the second support shaft 901 passing through the bottom bracket 7. The fixed shaft 1003 is fixed to the side surfaces of the two top brackets 6 that are far apart from each other and the side surfaces of the two bottom brackets 7 that are far apart from each other. During operation, by rotating a limit block 1002, the limiting work on the first support shaft 801 and the second support shaft 901 in one direction can be released, thus facilitating mold replacement after rotating the first support shaft 801 and the second support shaft 901. The limit block 1002 is driven to reset and rotate by a spiral spring, which can automatically lock the mold and prevent accidental rotation during mold replacement, thereby improving the stability during use.

[0019] Furthermore, a plurality of laser emitters 11 are distributed at equal angles on the surface of the first support shaft 801, and the plurality of laser emitters 11 correspond to the first groove 803. A plurality of laser receivers 12 corresponding to the second groove 903 are distributed at equal angles on the surface of the second support shaft 901, and the plurality of laser receivers 12 cooperate with the plurality of laser emitters 11. During operation, the rotation angle of the first support shaft 801 and the second support shaft 901 can be detected, which helps the first support shaft 801 and the second support shaft 901 to rotate at the same angle, thereby ensuring that the top mold 804 and the bottom mold 904 are matched when they are replaced, and improving the accuracy of mold replacement.

[0020] Working principle: First, different types of top molds 804 are installed into the interior of several first grooves 803 through the first bolt assembly 805, and different types of bottom molds 904 that match the top molds 804 are installed into the interior of several second grooves 903 through the second bolt assembly 905. At the same time, the matching top molds 804 and bottom molds 904 maintain the same angle inside the first mounting bracket 802 and the second mounting bracket 902. Next, by rotating the limiting blocks 1002 in the same direction on the first support shaft 801 and the second support shaft 901, the limiting blocks 1002 cause the spiral spring to deform and release the limiting work on one ratchet 1001. This allows the first support shaft 801 and the second support shaft 901 to rotate, which in turn drives the first mounting bracket 802 and the second mounting bracket 902 to rotate. This rotation of the first mounting bracket 802 and the second mounting bracket 902 can drive the top mold 804 and the bottom mold 904 at different angles to alternate. After the top mold 804 and the bottom mold 904 have alternated, the limiting blocks 1002 are released, causing the spiral spring to drive the limiting blocks 1002 to reset and rotate, and then continue to limit the ratchet 1001. This prevents the first support shaft 801 and the second support shaft 901 from rotating, thereby improving the stability after angle adjustment. Meanwhile, during the rotation process, the first support shaft 801 drives the laser emitter 11 to rotate, while the second support shaft 901 drives the laser receiver 12, so that the laser signal generated by the laser emitter 11 is received by the matching laser receiver 12. This ensures that the rotation angles of the first support shaft 801 and the second support shaft 901 are consistent, and that the matching top mold 804 and bottom mold 904 are kept in a downward corresponding distribution. This improves the accuracy of mold replacement and prevents misalignment after mold replacement from affecting the bending operation.

[0021] The above description is merely a preferred embodiment of the present utility model and is not intended to limit the present utility model. Although the present utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, or similar improvements made within the theoretical and principle content of the present utility model should be included within the protection scope of the present utility model.

Claims

1. A rapid die-changing and angle calibration device for a CNC bending machine, characterized in that: Includes a support base (1); a fixed rod (2) is connected to the top of the support base (1), a top plate (3) is connected to the top of the fixed rod (2), a hydraulic cylinder (4) is connected to the top of the top plate (3), a movable plate (5) is connected to the bottom of the piston rod of the hydraulic cylinder (4), two top supports (6) are connected to the bottom of the movable plate (5), two bottom supports (7) corresponding to the top supports (6) are connected to the top of the support base (1), a top mold installation mechanism (8) is installed between the two top supports (6), and a bottom mold installation structure (9) is installed between the two bottom supports (7). The top mold mounting mechanism (8) includes a first support shaft (801) and a first bolt assembly (805). A first mounting bracket (802) is connected to the surface of the first support shaft (801). A plurality of first grooves (803) are equally spaced on the surface of the first mounting bracket (802). A top mold (804) of different models is movably connected inside the plurality of first grooves (803). The plurality of top molds (804) are connected to the first mounting bracket (802) through the first bolt assembly (805). The bottom mold mounting structure (9) includes a second support shaft (901) and a second bolt assembly (905). A second mounting bracket (902) is connected to the surface of the second support shaft (901). A plurality of second grooves (903) are equally spaced on the surface of the second mounting bracket (902). Bottom molds (904) of different models are movably connected inside the plurality of second grooves (903). The plurality of bottom molds (904) are connected to the second mounting bracket (902) through the second bolt assembly (905).

2. The rapid mold changing and angle calibration device for a CNC bending machine according to claim 1, characterized in that: The first support shaft (801) and the second support shaft (901) are both provided with locking mechanisms (10). The locking mechanism (10) includes a ratchet (1001) and a limiting block (1002). The limiting block (1002) has a through hole inside, and a spiral spring is connected to the inner wall of the through hole. The limiting block (1002) is connected to a fixed shaft (1003) through the spiral spring.

3. The rapid mold changing and angle calibration device for a CNC bending machine according to claim 2, characterized in that: The ratchet (1001) is symmetrically distributed with the first support shaft (801) passing through the two ends of the top bracket (6) and the second support shaft (901) passing through the two ends of the bottom bracket (7).

4. The rapid mold changing and angle calibration device for a CNC bending machine according to claim 3, characterized in that: The fixed shaft (1003) is fixed to the side surfaces of the two top supports (6) that are far apart from each other and the side surfaces of the two bottom supports (7) that are far apart from each other.

5. The rapid mold changing and angle calibration device for a CNC bending machine according to claim 1, characterized in that: The surface of the first support shaft (801) is provided with a plurality of laser emitters (11) distributed at equal angles, and the plurality of laser emitters (11) correspond to the first groove (803).

6. The rapid mold changing and angle calibration device for a CNC bending machine according to claim 5, characterized in that: The surface of the second support shaft (901) is provided with a plurality of laser receivers (12) corresponding to a plurality of second grooves (903) at equal angles, and the plurality of laser receivers (12) cooperate with the plurality of laser emitters (11).

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