Quick die changing device of bending machine

Abstract

The utility model relates to the technical field of bending machine equipment, and discloses a bending machine quick die changing device which comprises a machine base and a supporting plate fixedly connected to the top end of the machine base, a die changing mechanism is arranged on the outer wall of the machine base, and a bending limiting mechanism is arranged above the die changing mechanism and drives a bearing sliding plate to move in a sliding groove. The bearing sliding plate can be used for bearing and supporting the bearing connecting plate, it is ensured that the bearing connecting plate can bear the downward pressure of the bending cutter, and therefore the bearing connecting plate can be moved more conveniently and rapidly, the bending dies at the top end of the bearing connecting plate can be driven to move when the bearing connecting plate moves, and the specifications of the multiple bending dies at the top end of the bearing connecting plate are different; when bending dies of different specifications need to be used, the bending dies can be moved to the position below the bending knife, in this way, workers do not need to disassemble the bending dies and then install the bending dies, the convenience of die replacement can be greatly improved, and therefore the bending work efficiency is greatly improved.

Description

Technical Field

[0001] The utility model belongs to the technical field of bending machine equipment, and specifically relates to a quick die changing device for a bending machine. Background Art

[0002] A bending machine is a machine that can bend thin plates or round tubes. Its structure mainly includes a base, a workbench and a clamping plate. The workbench is placed on the base. A lower folding mold with a depression is installed on the workbench. A retractable clamping device is installed above the workbench. A convex upper bending mold is arranged at the end of the clamping device. The upper bending mold and the lower bending mold are brought close to each other to achieve clamping and bending of thin plates or pipes. Different mold combinations can be used to make the pressing plate or pipe into a variety of different workpieces to meet the different needs of customers. The operation is very simple.

[0003] The bending dies of most existing bending machines are installed on the machine base by bolt connection. For the stability of the installation, multiple bolts will be used for installation, which will make the installation and disassembly of the bending die more cumbersome, and the staff will need to use tools to complete the disassembly and assembly, which will lead to the inconvenience of the disassembly and assembly. Utility Model Content

[0004] In order to solve the above technical problems that most of the existing bending machines have bending dies installed on the machine base by bolt connection, and multiple bolts are used for installation for stability, which will make the installation and disassembly of the bending die more complicated, and the staff need to use tools to complete the disassembly and assembly, thus causing the inconvenience of the disassembly and assembly work, the basic concept of the technical solution adopted by the utility model is:

[0005] A quick die changing device for a bending machine, comprising a machine base;

[0006] A support plate fixedly connected to the top of the base, a mold changing mechanism is arranged on the outer wall of the base, a bending limit mechanism is arranged above the mold changing mechanism, and the mold changing mechanism includes a support seat fixedly connected to the outer wall of the base:

[0007] The top of the support seat is provided with a groove, the inner wall of the groove is fixedly connected with a sliding rod, the outer wall of the sliding rod is slidably connected with a sliding block, the top of the sliding block is fixedly connected with a load-bearing connecting plate, the top of the load-bearing connecting plate is fixedly connected with a bending mold, the outer wall of the load-bearing connecting plate is fixedly connected with a load-bearing slide plate, the outer wall of the support seat is provided with a sliding groove, the outer wall of the load-bearing slide plate is slidably connected to the inner wall of the sliding groove, the bottom of the support seat is fixedly connected with a load-bearing block, the outer wall of the load-bearing block is fixedly connected to the outer wall of the machine base, the outer wall of the sliding block is fixedly connected with a fixing plate, and a roller is rotatably provided on the fixing plate away from the sliding block. The top of the support seat is provided with a rolling groove, and the outer wall of the roller is rollingly arranged on the inner wall of the rolling groove.

[0008] As a preferred embodiment of the utility model, the bending limit mechanism includes a hydraulic cylinder fixedly connected to the bottom end of the support plate, the output end of the hydraulic cylinder is fixedly connected to a bending knife, the outer wall of the bending knife is fixedly connected to a sliding sleeve, the top end of the inner wall of the sliding sleeve is fixedly connected to a spring, one end of the spring away from the top end of the inner wall of the sliding sleeve is fixedly connected to a limiting rod, and one end of the limiting rod away from the spring is fixedly connected to a limiting block.

[0009] As a preferred embodiment of the present invention, there are two fixing plates and two rollers respectively, and the fixing plates and the rollers are distributed on the left and right outer walls of the slider in a left-right symmetrical structure.

[0010] As a preferred embodiment of the present utility model, the inner wall of the groove formed at the top of the support seat fits in close contact with the outer wall of the slider, and the outer wall of the roller fits in close contact with the inner wall of the rolling groove.

[0011] As a preferred embodiment of the present invention, there are several bending dies, the specifications of the bending dies are different, and they are evenly and equidistantly distributed on the top of the load-bearing connecting plate.

[0012] As a preferred embodiment of the present utility model, there are two limit rods and two limit blocks, and the limit rods and the limit blocks are distributed on the left and right outer walls of the bending knife in a bilaterally symmetrical structure.

[0013] As a preferred implementation mode of the present utility model, the inner wall of the sliding sleeve fits snugly with the outer wall of the limiting rod, and the limiting block is made of rubber.

[0014] Compared with the prior art, the utility model has the following beneficial effects:

[0015] The utility model discloses pulling the pull rod of the outer wall of the load-bearing slide plate will drive the load-bearing slide plate to move left and right on the inner wall of the slide groove, and when the load-bearing slide plate moves, it can drive the load-bearing connecting plate to move left and right through the sliding connection between the slider and the slide rod, and the load-bearing slide plate can carry out the load-bearing support function of the load-bearing connecting plate to ensure that the load-bearing connecting plate can withstand the downward pressure of the bending knife. At the same time, when the slider moves, it will drive the fixed plate and the roller to move on the inner wall of the rolling groove, so that the friction force of the slider in the process of moving left and right can be reduced by the roller, thereby moving the load-bearing connecting plate more conveniently, so that when the load-bearing connecting plate moves, it can drive the bending die at the top thereof to move, and the specifications of the bending dies at the top of the load-bearing connecting plate are different. When bending dies of different specifications are needed, the bending die can be moved to the bottom of the bending knife, so that the staff does not need to be subjected to the

[0016] The limit rod will stop sliding upwards, and then follows the movement of the bending knife downwards to further limit the top of the bearing connecting plate, thereby ensuring the stability of the bending die during the bending process.

[0017] The specific implementation of the utility model is further described in detail below with reference to the accompanying drawings. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] In the attached picture:

[0019] Figure 1 This is a schematic diagram of the overall front structure of the utility model;

[0020] Figure 2 It is a schematic diagram of the overall side structure of the utility model;

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

[0022] Figure 4 This is a partial structural diagram of the mold changing mechanism of the utility model;

[0023] Figure 5It is a schematic diagram of the separation structure of the bending limit mechanism of the utility model.

[0024] In the figure: 1. machine base; 2. support plate; 31. die changing mechanism; 311. support seat; 312. slide bar; 313. slide block; 314. load-bearing connecting plate; 315. bending die; 316. load-bearing slide plate; 317. slide groove; 318. load-bearing block; 319. fixed plate; 3110. roller; 3111. rolling groove; 32. bending limit mechanism; 321. hydraulic cylinder; 322. bending knife; 323. sliding sleeve; 324. spring; 325. limit rod; 326. limit block. DETAILED DESCRIPTION

[0025] In order to make the purpose, technical scheme and advantages of the embodiments of the utility model clearer, the technical scheme in the embodiments will be clearly and completely described below in conjunction with the drawings in the embodiments of the utility model. The following embodiments are used to illustrate the utility model.

[0026] like Figures 1 to 5 As shown, a quick die changing device for a bending machine comprises a machine base 1, a support plate 2 fixedly connected to the top of the machine base 1, a die changing mechanism 31 is arranged on the outer wall of the machine base 1, a bending limit mechanism 32 is arranged above the die changing mechanism 31, the die changing mechanism 31 comprises a support seat 311 fixedly connected to the outer wall of the machine base 1, a groove is provided on the top of the support seat 311, a slide bar 312 is fixedly connected to the inner wall of the groove, a slide bar 313 is slidably connected to the outer wall of the slide bar 312, a load-bearing connecting plate 314 is fixedly connected to the top of the load-bearing connecting plate 314, a bending die 315 is fixedly connected to the top of the load-bearing connecting plate 314, and a bending die 315 is fixedly connected to the top of the load-bearing connecting plate 314. The outer wall of the plate 314 is fixedly connected with a load-bearing slide 316, the outer wall of the support seat 311 is provided with a slide groove 317, the outer wall of the load-bearing slide 316 is slidably connected to the inner wall of the slide groove 317, the bottom end of the support seat 311 is fixedly connected with a load-bearing block 318, the outer wall of the load-bearing block 318 is fixedly connected to the outer wall of the machine base 1, the outer wall of the slider 313 is fixedly connected with a fixed plate 319, the fixed plate 319 is rotatably provided with a roller 3110 at one end away from the slider 313, the top of the support seat 311 is provided with a rolling groove 3111, and the outer wall of the roller 3110 is rollingly arranged on the inner wall of the rolling groove 3111.

[0027] Furthermore, there are two fixed plates 319 and two rollers 3110, which are respectively distributed on the left and right outer walls of the slider 313 in a left-right symmetrical structure. In this way, the left and right sides of the slider 313 can be supported and moved synchronously, thereby reducing the movement friction and improving the stability of the slider 313 during the moving support process.

[0028] Furthermore, the inner wall of the groove opened at the top of the support seat 311 fits well with the outer wall of the slider 313, and the outer wall of the roller 3110 fits well with the inner wall of the rolling groove 3111, thereby ensuring the tightness between the outer wall of the slider 313 and the inner wall of the groove, thereby improving the stability of the slider 313 during movement. At the same time, the fit between the inner wall of the rolling groove 3111 and the outer wall of the roller 3110 can further improve the stability of the slider 313 during the mobile support process.

[0029] Furthermore, there are several bending dies 315 with different specifications, and they are evenly and equidistantly distributed on the top of the bearing connecting plate 314. In this way, bending dies 315 of different types and specifications can be used without disassembly, thereby improving the efficiency of bending work and reducing the complexity of die changing.

[0030] The bending limit mechanism 32 includes a hydraulic cylinder 321 fixedly connected to the bottom end of the support plate 2, the output end of the hydraulic cylinder 321 is fixedly connected to a bending knife 322, the outer wall of the bending knife 322 is fixedly connected to a sliding sleeve 323, the top of the inner wall of the sliding sleeve 323 is fixedly connected to a spring 324, the end of the spring 324 away from the top of the inner wall of the sliding sleeve 323 is fixedly connected to a limiting rod 325, and the end of the limiting rod 325 away from the spring 324 is fixedly connected to a limiting block 326.

[0031] Furthermore, there are two limit rods 325 and limit blocks 326, which are distributed on the left and right outer walls of the bending knife 322 in a left-right symmetrical structure, so that the top of the bearing connecting plate 314 can be pressed and limited synchronously on the left and right sides, thereby improving the stability of the bearing connecting plate 314 during the bending process.

[0032] Furthermore, the inner wall of the sliding sleeve 323 fits snugly with the outer wall of the limiting rod 325, and the limiting block 326 is made of rubber. By setting the material of the limiting block 326 to rubber, the friction limiting effect between the top of the bearing connecting plate 314 can be increased, thereby further improving the stability of the bearing connecting plate 314 during bending work.

[0033] The implementation principle of a quick mold changing device for a bending machine in this embodiment is as follows: when it is necessary to change the mold, the bracket pulls the pull rod on the outer wall of the load-bearing slide plate 316, which will drive the load-bearing slide plate 316 to move left and right on the inner wall of the slide groove 317. When the load-bearing slide plate 316 moves, it can drive the load-bearing connecting plate 314 to move left and right through the sliding connection between the slider 313 and the slide rod 312. The load-bearing slide plate 316 can support the load-bearing connecting plate 314 to ensure that the load-bearing connecting plate 314 can withstand the downward pressure of the bending knife 322. At the same time, when the slider 313 moves, it will drive the fixed plate 319 and the roller 3110 to move in the rolling groove 31 11, so that the friction of the slider 313 during the left and right movement can be reduced by the roller 3110, so that the carrying connecting plate 314 can be moved more conveniently, so that when the carrying connecting plate 314 moves, the bending die 315 at the top thereof can be driven to move, and the specifications of the multiple bending dies 315 at the top of the carrying connecting plate 314 are different. When the bending dies 315 of different specifications are needed, the bending die 315 can be moved to the bottom of the bending knife 322, so that the staff does not need to disassemble and then install the bending die 315, which will greatly improve the convenience of die change, thereby greatly improving the efficiency of bending work.

[0034] After the bending die 315 is moved to the bottom of the bending knife 322, the hydraulic cylinder 321 can be started, and its output end will drive the bending knife 322 to move downward, and at the same time drive the sliding sleeve 323 to move downward. When the sliding sleeve 323 moves downward, it can drive the limiting rod 325 and the limiting block 326 to move downward. In the process of moving downward, the limiting block 326 first contacts the top of the bearing connecting plate 314. As it moves downward, the limiting rod 325 will slide on the inner wall of the sliding sleeve 323, and at the same time squeeze and compress the spring 324, and then push the spring 324 in the opposite direction through the rebound force of the spring 324. The movable limit rod 325 and the limit block 326 are tightly fitted on the top of the load-bearing connecting plate 314. The limit block 326 can increase the friction limit force between the top of the load-bearing connecting plate 314, so that the load-bearing connecting plate 314 can be limited, and then continue to move downward until the bending knife 322 comes into contact with the material to bend. At the same time, the limit rod 325 will stop sliding upward, and then follow the downward movement of the bending knife 322 to further limit the top of the load-bearing connecting plate 314, thereby ensuring the stability of the bending die 315 during the bending process.

Claims

1. A quick die changing device for a bending machine, comprising a machine base (1); A support plate (2) fixedly connected to the top of the base (1), characterized in that: The outer wall of the machine base (1) is provided with a die changing mechanism (31), and a bending limit mechanism (32) is provided above the die changing mechanism (31). The die changing mechanism (31) comprises a support seat (311) fixedly connected to the outer wall of the machine base (1): The top of the support seat (311) is provided with a groove, the inner wall of the groove is fixedly connected to a slide bar (312), the outer wall of the slide bar (312) is slidably connected to a slider (313), the top of the slider (313) is fixedly connected to a load-bearing connecting plate (314), the top of the load-bearing connecting plate (314) is fixedly connected to a bending die (315), the outer wall of the load-bearing connecting plate (314) is fixedly connected to a load-bearing slide plate (316), the outer wall of the support seat (311) is provided with a slide groove (317), the outer wall of the load-bearing slide plate (316) is slidably connected to the slide bar (312 ... and the outer wall of the load-bearing slide plate (316) is slidably connected to the slide bar (312). The support seat (311) is connected to the inner wall of the slide groove (317), the bottom end of the support seat (311) is fixedly connected to a load-bearing block (318), the outer wall of the load-bearing block (318) is fixedly connected to the outer wall of the machine base (1), the outer wall of the slide block (313) is fixedly connected to a fixing plate (319), the fixing plate (319) is rotatably provided with a roller (3110) at one end away from the slide block (313), the top end of the support seat (311) is provided with a rolling groove (3111), and the outer wall of the roller (3110) is rollingly provided on the inner wall of the rolling groove (3111).

2. A quick die changing device for a bending machine according to claim 1, characterized in that: The bending limit mechanism (32) comprises a hydraulic cylinder (321) fixedly connected to the bottom end of the support plate (2); the output end of the hydraulic cylinder (321) is fixedly connected to a bending knife (322); the outer wall of the bending knife (322) is fixedly connected to a sliding sleeve (323); the top end of the inner wall of the sliding sleeve (323) is fixedly connected to a spring (324); one end of the spring (324) away from the top end of the inner wall of the sliding sleeve (323) is fixedly connected to a limit rod (325); and one end of the limit rod (325) away from the spring (324) is fixedly connected to a limit block (326).

3. A quick die changing device for a bending machine according to claim 1, characterized in that: The number of the fixing plates (319) and the number of the rollers (3110) are respectively two, and the fixing plates (319) and the rollers (3110) are respectively distributed on the left and right outer walls of the sliding block (313) in a left-right symmetrical structure.

4. A quick die changing device for a bending machine according to claim 1, characterized in that: The inner wall of the groove formed at the top of the support seat (311) fits in contact with the outer wall of the slider (313), and the outer wall of the roller (3110) fits in contact with the inner wall of the rolling groove (3111).

5. The quick die changing device for a bending machine according to claim 1, characterized in that: There are a plurality of bending dies (315), the specifications of the bending dies (315) are different, and the bending dies (315) are evenly and equidistantly distributed on the top of the load-bearing connecting plate (314).

6. A quick die changing device for a bending machine according to claim 2, characterized in that: The number of the limiting rods (325) and the limiting blocks (326) is two, and the limiting rods (325) and the limiting blocks (326) are distributed on the left and right outer walls of the bending knife (322) in a bilaterally symmetrical structure.

7. A quick die changing device for a bending machine according to claim 2, characterized in that: The inner wall of the sliding sleeve (323) fits snugly with the outer wall of the limiting rod (325), and the limiting block (326) is made of rubber.

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