Bending machine facilitating die replacement

Abstract

The utility model relates to a bending machine convenient to replace a die, which comprises a working table, a rack, a hydraulic cylinder, a connecting frame, an upper die and a lower die, the rack is fixed on the working table, the hydraulic cylinder is arranged at the top of the rack, the output end of the hydraulic cylinder is fixedly connected with the connecting frame, the connecting frame is detachably connected with the upper die, and the lower die is arranged on the connecting frame. The lower die is detachably connected with the workbench, a butt joint groove is formed in the connecting frame in the forward direction, an inserting plate is arranged on the upper die and inserted into the butt joint groove, the thickness of the inserting plate is equal to the height of the butt joint groove, and the inserting plate can penetrate out of the butt joint groove. A fastening assembly and a positioning assembly are arranged on the connecting frame, the problem that insertion is inconvenient due to side face slotting of the connecting frame is avoided, and the scheme of front face slotting and front face insertion is more convenient and faster.

Description

TECHNICAL FIELD

[0001] The utility model relates to bending machine technical field, especially is related to a bending machine convenient to change mould. BACKGROUND

[0002] Bending machine is a kind of machine that can bend sheet, and hydraulic bending machine generally includes support, workbench, hydraulic drive system and mould, support generally adopts cantilever structure, is used to fix hydraulic cylinder, and the movement of mould is controlled by the control system of hydraulic cylinder to complete bending work.

[0003] According to different processing requirements, different moulds need to be replaced in the production process. The upper mould is generally installed by inserting into the bending machine upper mould installation slot from the side of the bending machine. The side insertion mode often needs to be holed to the side of the frame, which reduces the structural strength of the whole frame. Moreover, the inserted mould needs to be manually positioned, and the error is large. UTILITY MODEL CONTENT

[0004] To solve the above technical problems, the utility model provides a bending machine convenient to change mould.

[0005] The bending machine convenient to change mould provided by the utility model adopts the following technical scheme:

[0006] A bending machine convenient to change mould, comprising a workbench, a frame, a hydraulic cylinder, a connecting frame, an upper mould and a lower mould, the frame is fixed on the workbench, the hydraulic cylinder is arranged on the top of the frame, the output end of the hydraulic cylinder is fixedly connected with the connecting frame, the connecting frame is detachably connected with the upper mould, the lower mould is detachably connected with the workbench, a butt joint groove is arranged on the connecting frame in a forward direction, an insertion plate is arranged on the upper mould, the insertion plate is inserted into the butt joint groove, the thickness of the insertion plate is equal to the height of the butt joint groove, the insertion plate can pass out of the butt joint groove, and a fastening assembly and a positioning assembly are arranged on the connecting frame.

[0007] Preferably, a fixing plate is arranged on the connecting frame, the fastening assembly comprises a short-stroke air cylinder and a pressing block, the short-stroke air cylinder is arranged on the fixing plate, the piston rod of the short-stroke air cylinder is connected with the pressing block, and the short-stroke air cylinder pushes the pressing block to tightly abut against one side of the insertion plate passing through the butt joint groove.

[0008] Preferably, the positioning assembly comprises a positioning column and a spring, a circular groove is arranged on the connecting frame, the positioning column is arranged in the circular groove, a recess is arranged at the top of the positioning column, the spring is arranged in the recess, one end of the spring abuts against the inner wall of the circular groove, a limiting block is arranged on the positioning column, and the end of the positioning column that penetrates out of the circular groove is in a semispherical shape; and a semispherical groove is arranged on the top wall of the inserting plate of the upper mold.

[0009] Preferably, the connecting frame is further provided with a prompting assembly, the prompting assembly comprises a connecting rod, a supporting rod and a tension spring, a sliding groove is arranged on the connecting frame, the sliding groove is communicated with the circular groove, the connecting rod slides in the sliding groove, one end of the connecting rod extends into the circular groove, parallel through grooves are arranged on the two sides of the sliding groove, one end of the tension spring is fixed on the inner wall of the through groove, the other end of the tension spring is connected with the supporting rod, the supporting rod is fixed on the connecting rod, a limiting groove is arranged on the side of the positioning column close to the sliding groove, the notch below the limiting groove is in an inclined surface, and the end of the connecting rod is correspondingly arranged in an inclined surface.

[0010] Preferably, a fixing groove is arranged on one side of the inserting plate penetrating through the butt joint groove, and when the end of the positioning column is inserted into the semispherical groove, the fixing groove is just located below the pressing block.

[0011] Preferably, a protrusion is arranged on the workbench, a long groove is arranged on the bottom of the lower mold, the protrusion is just inserted into the long groove, and the lower mold is detachably connected to the workbench.

[0012] In summary, the utility model has at least one of the following beneficial technical effects:

[0013] 1. The scheme of front slot insertion is more convenient and fast, and the problem of inconvenient insertion caused by the slot on the side of the connecting frame is avoided.

[0014] 2. The inserting plate is inserted into the butt joint groove, when the end of the inserting plate abuts against the semispherical end, the positioning column is pushed to move upward, at this time, the positioning column extrudes the spring, when the semispherical groove on the inserting plate is aligned with the semispherical end at the bottom of the positioning column, the spring of the positioning column resets to push the end at the bottom to be inserted into the semispherical groove, and a mechanical contact sound is emitted, thereby realizing the positioning of the upper mold and avoiding the error caused by manual positioning.

[0015] 3. When the positioning column moves upward, the inclined surface at the bottom of the limiting groove pushes the connecting rod until the connecting rod completely falls off the limiting groove and abuts against the outer wall of the positioning column, at this time, the outer wall of the positioning column pushes the connecting rod to move outward, the connecting rod extends out of the sliding groove, at this time, the staff can observe that, when the bottom of the positioning column is inserted into the semispherical groove, the positioning column moves downward, the connecting rod is reset to fall into the sliding groove of the positioning column under the action of the tension spring, thereby realizing the reminding of the positioning process. BRIEF DESCRIPTION OF DRAWINGS

[0016] Figure 1 is a schematic view of a bending machine with a die convenient to replace.

[0017] Figure 2 is a schematic view of another side of a bending machine with a die convenient to replace.

[0018] Figure 3 is a schematic view of an upper die.

[0019] Figure 4 is a schematic view of a connecting frame.

[0020] Figure 5 is a front view of the connecting frame.

[0021] Figure 6 is Figure 5 is a sectional view along line A-A.

[0022] Figure 7 is Figure 6 is an enlarged view of part B.

[0023] BRIEF DESCRIPTION OF DRAWINGS: 1, workbench; 2, frame; 3, hydraulic cylinder; 4, connecting frame; 41, butt joint groove; 42, round groove; 43, sliding groove; 44, through groove; 45, fixed plate; 5, upper die; 51, plug-in plate; 511, semispherical groove; 512, fixed groove; 6, lower die; 7, fastening assembly; 71, short stroke air cylinder; 72, pressing block; 8, positioning assembly; 81, positioning column; 811, recess; 812, limiting groove; 82, spring; 83, limiting block; 9, prompting assembly; 91, connecting rod; 92, supporting rod; 93, tension spring; 10, protrusion. DETAILED DESCRIPTION

[0024] The technical solutions in the embodiments of the present application will be described clearly and completely below with reference to the drawings in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, rather than all the embodiments. Based on the embodiments in the present application, all other embodiments obtained by those skilled in the art without creative work fall within the scope of protection of the present application.

[0025] In the description of the utility model, need understanding is, the term '' center '', '' longitudinal '', '' transverse '', '' length '', '' width '', '' thickness '', '' upper '', '' lower '', '' front '', '' back '', '' left '', '' right '', '' vertical '', '' horizontal '', '' top '', '' bottom '', '' inner '', '' outer '', '' clockwise '', '' counterclockwise '' The orientation or positional relationship indicated in the drawing is based on the orientation or positional relationship shown in the drawing, only for the convenience of describing the utility model and simplifying the description, and not indicating or implying that the device or element indicated must have a particular orientation, be constructed and operated in a particular orientation, therefore it can not be understood as a limitation on the utility model.

[0026] In addition, the meaning of '' several '' is at least two, for example two, three, etc., unless otherwise explicitly and specifically limited.

[0027] Embodiment one of the utility model, refer to Figures 1-7 .

[0028] A bending machine convenient for replacing die includes a workbench 1, a rack 2, a hydraulic cylinder 3, a connecting frame 4, an upper die 5 and a lower die 6, the rack 2 is fixed on the workbench 1, the hydraulic cylinder 3 is arranged at the top of the rack 2, the output end of the hydraulic cylinder 3 is fixedly connected with the connecting frame 4, the connecting frame 4 is detachably connected with the upper die 5, the lower die 6 is detachably connected with the workbench 1, a butt joint groove 41 is provided on the connecting frame 4 in a forward direction, an insertion plate 51 is arranged on the upper die 5, the insertion plate 51 is inserted into the butt joint groove 41, the thickness of the insertion plate 51 is equal to the height of the butt joint groove 41, and the insertion plate 51 can pass out of the butt joint groove 41, and the connecting frame 4 is provided with a fastening assembly 7 and a positioning assembly 8.

[0029] The connecting frame 4 is provided with a fixed plate 45, the fastening assembly 7 includes a short-stroke air cylinder 71 and a pressing block 72, the short-stroke air cylinder 71 is arranged on the fixed plate 45, the piston rod of the short-stroke air cylinder 71 is connected with the pressing block 72, the short-stroke air cylinder 71 pushes the pressing block 72 to abut against one side of the insertion plate 51 passing through the butt joint groove 41, by this design, the problem that the insertion is inconvenient due to the slot on the side of the connecting frame 4 is avoided, and the scheme of frontal insertion with frontal slot is more convenient and fast.

[0030] Embodiment two

[0031] The positioning assembly 8 of the bending machine convenient for replacing the die comprises a positioning column 81 and a spring 82, a circular groove 42 is arranged on the connecting frame 4, the positioning column 81 is arranged in the circular groove 42, a recess 811 is formed in the top of the positioning column 81, the spring 82 is arranged in the recess 811, one end of the spring 82 abuts against the inner wall of the circular groove 42, a limiting block 83 is arranged on the positioning column 81, and the end of the positioning column 81 that penetrates out of the circular groove 42 is in a semispherical shape. The top wall of the plug-in plate 51 of the upper die 5 is provided with a semispherical groove 511, and the end of the positioning column 81 is inserted into the semispherical groove 511. Through the design, the plug-in plate 51 is inserted into the butt joint groove 41, when the end of the plug-in plate 51 abuts against the semispherical end, the positioning column 81 is pushed to move upwards, at this time, the positioning column 81 extrudes the spring 82, when the semispherical groove 511 on the plug-in plate 51 is aligned with the semispherical end at the bottom of the positioning column 81, the spring 82 of the positioning column 81 resets to push the end at the bottom to be inserted into the semispherical groove 511, and a mechanical contact sound is emitted, thereby realizing the positioning of the upper die 5 and avoiding the error caused by manual positioning.

[0032] Embodiment three

[0033] The connecting frame 4 is further provided with a prompting assembly 9, the prompting assembly 9 comprises a connecting rod 91, a supporting rod 92 and a tension spring 93, a sliding groove 43 is formed in the connecting frame 4 and communicates with the circular groove 42, the connecting rod 91 slides in the sliding groove 43, one end of the connecting rod 91 extends into the circular groove 42, parallel through grooves 44 are arranged on the two sides of the sliding groove 43, one end of the tension spring 93 is fixed on the inner wall of the through groove 44, the other end of the tension spring 93 is connected with the supporting rod 92, the supporting rod 92 is fixed on the connecting rod 91, a limiting groove 812 is formed in the side of the positioning column 81 close to the sliding groove 43, the slot at the bottom of the limiting groove 812 is provided with an inclined surface, and the end of the connecting rod 91 is correspondingly provided with an inclined surface. Through the design, when the positioning column 81 moves upwards, the inclined surface at the bottom of the limiting groove 812 pushes the connecting rod 91 until the connecting rod 91 completely falls out of the limiting groove 812 and abuts against the outer wall of the positioning column 81, at this time, the outer wall of the positioning column 81 pushes the connecting rod 91 to move outward, the connecting rod 91 extends out of the sliding groove 43, at this time, the staff can observe, when the bottom of the positioning column 81 is inserted into the semispherical groove 511, the positioning column 81 moves downwards, the connecting rod 91 is reset to fall into the sliding groove 43 of the positioning column 81 under the action of the tension spring 93, and the prompting of the positioning process is realized.

[0034] A fixing groove 512 is formed in one side of the plug-in plate 51 penetrating through the butt joint groove 41, when the end of the positioning column 81 is inserted into the semispherical groove 511, the fixing groove 512 is just located directly below the pressing block 72, and the upper die 5 can have a better fixing effect, the workbench 1 is provided with a protrusion 10, a long groove is arranged at the bottom of the lower die 6, the protrusion 10 is inserted into the long groove, and the lower die 6 is detachably connected to the workbench 1.

[0035] The above are preferred embodiments of the present application, and are not intended to limit the protection scope of the present application, so that: any equivalent changes made according to the structure, shape, principle of the present application should be covered within the protection scope of the present application.

Claims

1. A bending machine that facilitates replacement of a die, characterized by: The utility model provides a mould locking device, including workstation (1), frame (2), hydraulic cylinder (3), connecting frame (4), upper die (5) and lower die (6), the frame (2) is fixed on workstation (1), the hydraulic cylinder (3) is arranged at the top of frame (2), the output of hydraulic cylinder (3) is fixed connecting frame (4), connecting frame (4) is detachably connected with upper die (5), lower die (6) is detachably connected with workstation (1), the connecting frame (4) is provided with butt joint groove (41) on the positive side, the upper die (5) is provided with the plugboard (51), the plugboard (51) is inserted into butt joint groove (41), the thickness of plugboard (51) is equal to the height of butt joint groove (41), and plugboard (51) can be from butt joint groove (41) and go out, connecting frame (4) is provided with fastening assembly (7) and positioning assembly (8).

2. The bending machine of claim 1, wherein: The connecting frame (4) is provided with a fixed plate (45), the fastening assembly (7) includes a short-stroke cylinder (71) and a pressing block (72), the short-stroke cylinder (71) is arranged on the fixed plate (45), the piston rod of the short-stroke cylinder (71) is connected with the pressing block (72), and the short-stroke cylinder (71) pushes the pressing block (72) to abut against one side of the plugboard (51) passing through the butt joint groove (41).

3. The bending machine of claim 2, wherein: The positioning assembly (8) includes a positioning column (81) and a spring (82), the connecting frame (4) is provided with a circular groove (42), the positioning column (81) is arranged in the circular groove (42), a recess (811) is formed in the top of the positioning column (81), the spring (82) is arranged in the recess (811), one end of the spring (82) abuts against the inner wall of the circular groove (42), a limiting block (83) is arranged on the positioning column (81), the end of the positioning column (81) protruding out of the circular groove (42) is in a semispherical shape, a semispherical groove (511) is formed in the top wall of the plugboard (51) of the upper die (5), and the end of the positioning column (81) is inserted into the semispherical groove (511).

4. The bending machine of claim 3, wherein: The connecting frame (4) is further provided with a prompt assembly (9), the prompt assembly (9) includes a connecting rod (91), a supporting rod (92) and a tension spring (93), a sliding groove (43) is formed in the connecting frame (4), the sliding groove (43) is communicated with the circular groove (42), the connecting rod (91) slides in the sliding groove (43), one end of the connecting rod (91) extends into the circular groove (42), parallel grooves (44) are formed on the two sides of the sliding groove (43), one end of the tension spring (93) is fixed on the inner wall of the parallel groove (44), the other end of the tension spring (93) is connected with the supporting rod (92), the supporting rod (92) is fixed on the connecting rod (91), a limiting groove (812) is formed in the side of the positioning column (81) close to the sliding groove (43), the notch below the limiting groove (812) is in an inclined shape, and the end of the connecting rod (91) is also in an inclined shape.

5. The bending machine of claim 3, wherein: The plug-in plate (51) is provided with a fixing groove (512) on one side of the docking groove (41), and when the end of the positioning column (81) is inserted into the semispherical groove (511), the fixing groove (512) is just below the pressing block (72).

6. The bending machine of claim 1, wherein: The workbench (1) is provided with a protrusion (10), and the bottom of the lower mold (6) is provided with a long groove, the protrusion (10) is inserted into the long groove, and the lower mold (6) is detachably connected to the workbench (1).

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