CN115847909A - Dual-purpose oil press for forward and backward fine trimming production - Google Patents

Abstract

The invention discloses a dual-purpose oil press for positive and negative finishing production, which comprises a frame, a workbench arranged on the frame, an upper drive cylinder and a lower drive cylinder located on the upper and lower sides of the workbench, the upper drive cylinder is connected with an upper mold , the upper drive cylinder drives the upper mold to press down towards the direction of the workbench, the lower drive cylinder is detachably connected with a push piece and a lower mold, and the lower drive cylinder drives the lower mold to move up and close the upper mold through the push piece. The present invention provides a dual-purpose oil press for positive and negative finishing production. The upper and lower driving cylinders respectively drive the upper mold and the lower mold to stamp the steel back, so as to realize the process of positive finishing and reverse finishing on the steel back, satisfying Accuracy requirements have the advantage of reducing the manufacturing cost of the product.

Description

A dual-purpose hydraulic press for positive and negative finishing and production

technical field

The invention relates to the technical field of hardware processing machinery, in particular to a dual-purpose oil press for positive and negative finishing and production.

Background technique

Products such as steel backings for brake discs are usually stamped by mechanical punching machines. Put the steel back on the mould, and make the required structure through the stamping of the mould. The traditional equipment for stamping the steel back of brake pads is a mechanical punch. The traditional process of stamping the steel back by the mechanical punch is mainly four processes: bevel pressing, punching, nail pulling and finishing. During the production of the steel back finishing process, the punch press needs to be equipped with a hydraulic system and an oil cylinder to assist in achieving the accuracy of this process, but its structural limitations cannot meet the needs of the positive and negative finishing process. The use of complex fine blanking machines to produce meets the precision requirements, but at the same time increases the manufacturing cost of the product.

Contents of the invention

The purpose of the present invention is to provide a dual-purpose hydraulic press for positive and negative finishing production, which drives the upper mold and the lower mold to stamp the steel back through the upper drive cylinder and the lower drive cylinder respectively, so as to realize positive finishing and reverse finishing of the steel back The repair process meets the precision requirements and has the advantage of reducing the manufacturing cost of the product.

In order to solve the above technical problems, the technical solution provided by the present invention is: a dual-purpose hydraulic press for positive and negative finishing and production, including a frame, a worktable on the frame, and an upper drive cylinder and a lower Drive cylinder, the upper drive cylinder is connected with the upper mold, the upper drive cylinder drives the upper mold to press down toward the worktable, the lower drive cylinder is detachably connected with the pusher and the lower mold, and the lower drive cylinder drives the lower mold through the pusher Clamp the upper mold with the upper mold.

The present invention adopts the above-mentioned technical scheme, the upper drive cylinder drives the upper mold to press down, and the lower drive cylinder drives the lower mold to move upward, so as to realize the stamping and forming of the steel back; when carrying out positive and negative finishing, different pushing pieces and Lower the mold to realize the positive finishing and reverse finishing of the steel back. The push piece can be replaced conveniently and quickly, the structural complexity of the dual-purpose hydraulic press is reduced, and the equipment manufacturing cost of the hydraulic press is reduced at the same time.

The above-mentioned double-purpose hydraulic press for positive and negative finishing production, the lower drive cylinder is connected with the moving plate of the bottom cylinder, and the pusher is connected between the moving plate of the bottom cylinder and the lower mold. The lower drive cylinder drives the moving plate of the bottom cylinder to support and push the ejector and the lower mold upward to realize the finishing operation.

In the above-mentioned double-purpose oil press for positive and negative finishing production, the pusher is set as a central pressure bearing rod, and a central through hole is provided on the workbench, and the central pressure bearing rod passes through the central through hole to connect with the lower mold. The central pressure bearing rod is driven by the lower drive cylinder to push the pusher and the lower mold upward, and close the mold with the upper mold to realize the stamping of the steel back.

In the dual-purpose hydraulic press for positive and negative finishing production mentioned above, a bottom cylinder pressure bearing plate is placed between the bottom cylinder moving plate and the central pressure bearing rod. The pressure bearing plate of the bottom cylinder increases the force-bearing area of the surface of the moving plate of the bottom cylinder, which is used to reduce the pressure of the central pressure bearing rod on the moving plate of the bottom cylinder during punching, and protects the moving plate of the bottom cylinder.

The above-mentioned double-purpose hydraulic press for positive and negative finishing production, the lower mold is provided with a lower mold core, and the lower mold core is connected with the central pressure bearing rod. The central pressure bearing rod pushes the core of the lower mold to match the lower mold and the upper mold to form the steel back.

The above-mentioned positive and negative finishing production dual-purpose hydraulic press, the core of the lower mold and the central pressure bearing rod are connected through the top column of the core. The mold core jacking column is used to jack up the lower mold core to lift the stamped steel back from the mold.

In the above-mentioned double-purpose hydraulic press for positive and negative finishing production, the ejector is set as a mold base connecting rod, and the workbench is provided with a through hole for the connecting rod, and the mold base connecting rod passes through the connecting rod through hole to connect with the lower mold. The lower driving oil cylinder drives the connecting rod of the mold base to move upward, and pushes the lower mold to move upward to close the upper mold.

The above-mentioned double-purpose hydraulic press for positive and negative finishing production, the upper end of the mold base connecting rod is provided with a lower mold movable plate, and the lower mold is arranged on the lower mold movable plate. The connecting rod of the mold base pushes the movable plate of the lower mold, and the movable plate of the lower mold pushes the lower mold upward to close the mold.

In the dual-purpose hydraulic press for positive and negative finishing production mentioned above, a lower die pressure plate is placed between the workbench and the lower die movable plate. The pressure plate of the lower die is used to protect the workbench from excessive pressure.

In the dual-purpose oil press for positive and negative finishing production mentioned above, the pressure bearing plate of the lower mold is provided with a pressure bearing block of the lower mold, and the pressure bearing block pad of the lower mold is arranged at the bottom of the lower mold. The lower mold pressure block is used to support the lower mold when the mold is closed.

The above-mentioned double-purpose hydraulic press for positive and negative finishing production has a mold frame guide post on the workbench, and the movable plate of the lower die is positioned on the mold frame guide post. Through the guide pillar of the mold base, the upward movement of the movable plate of the lower mold is more accurate, and the precision of the stamping product is improved.

The above-mentioned double-purpose hydraulic press for positive and negative finishing production, the upper drive oil cylinder is connected with a slide block, and the upper mold is arranged on the slide block. The slider can be positioned and moved on the frame, so that the positioning is accurate when the upper mold is pressed down.

The beneficial effects obtained by the present invention are: it solves the defect that a hydraulic device needs to be installed in the finishing process of the steel back produced by the traditional mechanical punching machine, and solves the problem that the structure limitation of the traditional mechanical punching machine makes its space limited and cannot realize the positive and negative finishing process ; It has both positive and negative finishing functions, which can meet the needs of various stamping processes, and one machine with multiple functions reduces the manufacturing cost of the equipment.

Description of drawings

Fig. 1 is the schematic diagram of the three-dimensional structure of the anti-finishing stamping of the embodiment of the present invention;

Fig. 2 is a schematic structural diagram of starting preparation for de-finishing stamping according to an embodiment of the present invention;

Fig. 3 is a schematic diagram of the structure of the upper drive oil cylinder pressing down on the steel back in reverse finishing stamping according to the embodiment of the present invention;

Fig. 4 is a schematic diagram of the structure of the upward finishing steel back of the drive oil cylinder under the anti-finishing embodiment of the present invention;

Fig. 5 is a schematic diagram of the reset structure of the upper and lower drive oil cylinders completed by de-finishing the stamping steel back according to the embodiment of the present invention;

Fig. 6 is a schematic diagram of the three-dimensional structure of positive and finishing punching according to an embodiment of the present invention;

Fig. 7 is a schematic structural view of the preparation for the start-up of the positive finishing stamping according to the embodiment of the present invention;

Fig. 8 is a schematic structural view of the finishing stamping steel back according to the embodiment of the present invention;

Fig. 9 is a schematic diagram of the reset structure of the upper and lower driving cylinders after finishing the stamping steel back according to the embodiment of the present invention;

Fig. 10 is a structural schematic diagram of the cooperation of the upper and lower molds of the embodiment of the present invention;

Fig. 11 is a schematic structural view of a workbench according to an embodiment of the present invention;

Fig. 12 is a schematic cross-sectional structural diagram of the connection structure of the lower drive cylinder according to the embodiment of the present invention;

Fig. 13 is a schematic diagram of a hydraulic control oil circuit according to an embodiment of the present invention;

Fig. 14 is a schematic diagram of the structural cooperation of the upper mold and the lower mold of the anti-finishing embodiment of the present invention;

Fig. 15 is a schematic diagram of the structural cooperation of the upper mold and the lower mold being refined according to the embodiment of the present invention;

Fig. 16 is a schematic diagram of the appearance structure of the embodiment of the present invention;

FIG. 17 is a schematic top view of the structure in FIG. 16 .

Description of reference numerals: frame 1, workbench 11, central through hole 12, connecting rod through hole 13, formwork guide post 14, guide rod 15, cartridge valve 16, oil tank 17, protective cover 18, hydraulic system 19, Upper drive cylinder 21, upper mold 22, slider 23, upper drive cylinder piston rod 24, lower drive cylinder 31, lower mold 32, pusher 33, bottom cylinder movable plate 34, bottom cylinder pressure plate 35, lower mold Core 36, lower die moving plate 37, lower die pressure plate 38, lower die pressure block 39, electromagnetic reversing valves 301, 302, 303, proportional pressure valve 304, hydraulic oil pipelines 305, 306, lower drive cylinder block 311, the lower drive cylinder piston rod 312, the lower cylinder pull rod 313, the center pressure bearing rod 331, the formwork connecting rod 332, the mold core top post 333, and the steel back 4.

Detailed ways

The present invention will be further described below in conjunction with the accompanying drawings and specific embodiments.

Referring to Fig. 1 to Fig. 15, a dual-purpose oil hydraulic machine for positive and negative finishing and production includes a frame 1, a workbench 11 arranged on the frame 1, and an upper drive cylinder 21 and a lower drive cylinder 21 located on the upper and lower sides of the workbench 11. Driving oil cylinder 31, upper driving oil cylinder 21 is connected with upper mold 22, upper driving oil cylinder 21 drives upper mold 22 to press down toward worktable 11 direction, lower driving oil cylinder 31 is detachably connected with pusher 33 and lower mold 32, lower The driving cylinder 31 drives the lower mold 32 to move up and close the mold with the upper mold 22 through the pusher 33 .

As shown in FIG. 12 , it is a structural diagram of the lower drive cylinder 31 . The lower driving oil cylinder 31 is composed of the lower driving oil cylinder body 311 and the lower driving oil cylinder piston rod 312, and is hoisted on the workbench 11 by the lower oil cylinder pull rod 313. During work, the lower drive cylinder piston rod 312 drives the lower mold moving plate 37 to move upward, and the pusher 33 pushes the lower mold 32 to move upward and to close the mold with the upper mold 22 .

The lower driving cylinder 31 is connected with a bottom cylinder moving plate 34 , and the pusher 33 is connected between the bottom cylinder moving plate 34 and the lower mold 32 .

The push piece 33 is set as a central pressure bearing rod 331 , and the workbench 11 is provided with a central through hole 12 , and the central pressure bearing rod 331 passes through the central through hole 12 to connect with the lower mold 32 .

A bottom cylinder pressure bearing plate 35 is laid between the bottom cylinder moving plate 34 and the central pressure bearing rod 331 . The lower mold 32 is provided with a lower mold core 36 , and the lower mold core 36 is connected with the central pressure bearing rod 331 .

The lower mold core 36 is connected to the central pressure bearing rod 331 through a core top post 333 . Wherein, the mold core push column 333 is used for jacking up the lower mold core 36 when the central pressure bearing rod 331 moves upward.

The pusher 33 is set as a mold frame connecting rod 332 , and the workbench 11 is provided with a connecting rod through hole 13 , and the mold frame connecting rod 332 passes through the connecting rod through hole 13 and is connected with the lower mold 32 .

The upper end of the mold base connecting rod 332 is provided with a lower mold movable plate 37 , and the lower mold 32 is arranged on the lower mold movable plate 37 .

A lower die pressure bearing plate 38 is laid between the workbench 11 and the lower die movable plate 37 .

Lower mold pressure bearing plate 38 is provided with lower mold pressure bearing block 39, and lower mold pressure bearing block 39 is arranged on lower mold 32 bottoms.

The workbench 11 is provided with a formwork guide post 14 , and the lower die movable plate 37 is moved and positioned on the formwork guide post 14 .

The upper driving oil cylinder 21 is connected with a slide block 23, and the upper mold 22 is arranged on the lower side of the slide block 23. Wherein the frame 1 is provided with a guide rod 15, when the upper drive cylinder 21 drives the slide block 23 and the upper mold 22 goes down, the slide block 23 slides on the guide rod 15 to keep the upper drive cylinder 21 driving the upper mold 22 to press and close the mold Motion positioning is accurate.

The upper drive cylinder 21 is connected with a slide block 23 , and the upper mold 22 is arranged on the slide block 23 . The upper drive cylinder piston rod 24 of the upper drive cylinder 21 is connected with the slide block 23 , and the upper drive cylinder 21 controls the upward and downward movement of the slide block 23 through the upper drive cylinder piston rod 24 .

As shown in Fig. 16 and Fig. 17, the appearance structure diagram and top view of the embodiment of the present invention, a protective cover 18 is provided at the end of the frame 1, and a hydraulic system 19 is provided inside the protective cover 18. The hydraulic system 19 is used to output hydraulic oil to drive the upper drive cylinder 21 and the lower drive cylinder 31 to work. The hydraulic system 19 is provided with electromagnetic reversing valves 301 , 302 , 303 and a proportional pressure valve 304 .

In the hydraulic control oil circuit shown in Figure 13, the electromagnetic reversing valve 301 conducts so that the hydraulic oil is input into the rodless chamber of the lower driving cylinder 31, and the piston rod 312 of the lower driving cylinder is driven to rise, so as to realize the upward movement of the lower mold 32 and Upper mold 22 is matched with finishing steel back. At this time, the hydraulic oil in the rod cavity of the lower driving oil cylinder 31 flows back to the oil tank 17 through the hydraulic oil pipeline 306 .

After finishing stamping of the steel back 4, the electromagnetic reversing valve 301 is switched, and the electromagnetic reversing valve 302 conducts and controls the hydraulic oil to enter the rod chamber of the lower driving cylinder 31, driving the piston rod 312 of the lower driving cylinder to descend, The lower mold 32 is driven downward to reset, and now the hydraulic oil in the rodless cavity of the lower drive cylinder 31 flows back to the oil tank 17 through the solenoid valve 301 .

When the present invention is actually implemented, two processes of positive and negative finishing can be realized. During the de-finishing stamping operation, the steel back 4 is placed on the lower mold 32, the upper drive cylinder 21 drives the slider 23 to drive the upper mold 22 to press down the steel back 4, and the upper drive cylinder 21 maintains a certain pressure on the steel back 4 . The lower drive cylinder 31 drives the bottom cylinder movable plate 34 to move upward, and the lower mold 32 is pushed upward by the mold base connecting rod 332 and the lower mold movable plate 37, and the lower mold 32 cooperates with the upper mold 22 to close the steel back. After completion, the upper drive cylinder 21 drives the slide block 23 and the upper mold 22 to go up and open the mold, and the lower drive cylinder 31 drives the moving plate 34 of the bottom cylinder and the lower mold 32 to demould.

During the finishing stamping operation, the lower drive cylinder 31 drives the movable plate 34 of the bottom cylinder to move upward, and the lower mold core 36 is pushed upward to reach the position through the central pressure bearing rod 331 . The steel back 4 is placed on the lower mold 32 . The upper drive cylinder 21 drives the slide block 23 and the upper mold 22 to go down, and cooperates with the lower mold 32 to close the mold and refine the steel back. At the same time, under the certain back pressure provided by the proportional pressure valve 304, the lower driving cylinder 31 supports the steel back 4 through the central pressure bearing rod 331, the mold core top column 333, and the lower mold core 36 to passively and synchronously descend under the downward force of the upper mold 22. In the process of descending, the steel back is trimmed and removed. After the completion, the upper drive cylinder 21 returns to drive the upper mold 22 to open the mold upward, the lower drive cylinder 31 inputs hydraulic oil to control the lower mold core 36 to move upward to open the steel back and demould, and then the lower drive cylinder 31 drives the bottom cylinder moving plate 34, the center The pressure bearing rod 331 descends and resets.

Among them, when the stamping steel back is being finished, the upper drive cylinder 21 drives the upper mold 22 to go down to finish the steel back. At this time, the electromagnetic reversing valve 303 is powered to control the hydraulic oil to connect the proportional pressure valve 304, and the lower drive cylinder 31 is at the same time. Proportional pressure valve 304 provides a certain back pressure through the central pressure bearing rod 331, mold core top column 333 and lower mold core 36 to support the steel back 4 to passively and synchronously descend under the downward force, and the hydraulic pressure in the rodless chamber of the lower drive cylinder 31 The oil is compressed, and the hydraulic oil in the rodless chamber of the lower drive cylinder 31 returns to the oil tank 17 through the cartridge valve 16 when the pressure exceeds the pressure set by the proportional pressure valve 304 . The anti-finishing stamping steel back electromagnetic reversing valve 302 is not powered, and the proportional pressure valve 304 is not connected to the oil circuit to take effect at this time, and the pressure of anti-finishing is controlled by the pressure of the hydraulic oil provided by the hydraulic system 19 .

Wherein, as shown in FIG. 13 , in the de-finishing stamping operation, after the upper mold 22 presses the steel back 4 onto the lower mold core 36, the electromagnetic reversing valve 301 is energized. When the electromagnetic reversing valve 301 is energized , the hydraulic oil enters the hydraulic oil pipeline 305 from the cartridge valve corresponding to the electromagnetic reversing valve 301 to enter the rodless cavity of the lower driving cylinder 31, and the lower driving cylinder 31 drives the moving plate 34 of the bottom cylinder and the connecting rod 332 of the formwork Push the lower mold 32 located on the lower mold moving plate 37 to go up to carry out the steel back finishing process action. After finishing, the upper drive cylinder 21 returns to drive the upper mold 22 to open the mold upward, and then when the electromagnetic reversing valve 302 is energized, the hydraulic oil enters the hydraulic oil pipeline 306 from the cartridge valve corresponding to the electromagnetic reversing valve 302 to complete the process. Carry out descending reset action in the rod cavity of lower drive oil cylinder 31.

To sum up, the present invention has been made into actual samples according to the instructions and illustrations, and has been tested for many times. From the results of the test, it can be proved that the present invention can achieve its intended purpose, and its practical value is worthless. Doubt. The above-mentioned embodiments are only used to illustrate the present invention for convenience, and are not intended to limit the present invention in any form. Anyone with ordinary knowledge in the technical field, if within the scope of the technical characteristics of the present invention, can use this The equivalent embodiments of partial changes or modifications made in the technical content disclosed in the invention, and without departing from the technical features of the present invention, still fall within the scope of the technical features of the present invention.

Claims (12)

1. The utility model provides a dual-purpose hydraulic press of positive and negative truing production which characterized in that: including frame (1), locate workstation (11) on frame (1) and be located last actuating cylinder (21) and lower actuating cylinder (31) of workstation (11) upper and lower both sides, it is connected with mould (22) to go up actuating cylinder (21), it pushes down towards workstation (11) direction to go up actuating cylinder (21) drive upper die (22), detachable connections has top push member (33) and bed die (32) on lower actuating cylinder (31), lower actuating cylinder (31) are gone up through top push member (33) drive bed die (32) and are gone up with last mould (22) compound die.

2. The positive and negative finishing production dual-purpose oil press of claim 1, wherein: the lower driving oil cylinder (31) is connected with a bottom cylinder movable plate (34), and the pushing piece (33) is connected between the bottom cylinder movable plate (34) and the lower die (32).

3. The positive and negative finishing production dual-purpose oil press of claim 2, wherein: the pushing piece (33) is arranged to be a central bearing rod (331), the workbench (11) is provided with a central through hole (12), and the central bearing rod (331) penetrates through the central through hole (12) to be connected with the lower die (32).

4. The positive and negative finishing production dual-purpose oil press of claim 2, wherein: a bottom cylinder pressure bearing plate (35) is padded between the bottom cylinder movable plate (34) and the central pressure bearing rod (331).

5. The positive and negative finishing production dual-purpose oil press of claim 3, wherein: the lower die (32) is provided with a lower die core (36), and the lower die core (36) is connected with a central bearing rod (331).

6. The positive and negative finishing production dual-purpose oil press of claim 5, wherein: the lower die core (36) is connected with the central bearing rod (331) through a core top column (333).

7. The positive and negative finishing production dual-purpose oil press according to claim 1 or 2, characterized in that: the pushing piece (33) is arranged to be a die set connecting rod (332), a connecting rod through hole (13) is formed in the workbench (11), and the die set connecting rod (332) penetrates through the connecting rod through hole (13) to be connected with the lower die (32).

8. The positive and negative finishing production dual-purpose oil press of claim 7, wherein: the upper end of the die carrier connecting rod (332) is provided with a lower movable plate (37), and the lower die (32) is arranged on the lower movable plate (37).

9. The positive and negative finishing production dual-purpose oil press of claim 8, wherein: a lower die bearing plate (38) is padded between the workbench (11) and the lower die movable plate (37).

10. The positive and negative finishing production dual-purpose oil press of claim 9, wherein: the lower die bearing plate (38) is provided with a lower die bearing block (39), and the lower die bearing block (39) is arranged at the bottom of the lower die (32) in a cushioning manner.

11. The positive and negative finishing production dual-purpose oil press of claim 8, wherein: the workbench (11) is provided with a die set guide post (14), and the lower movable plate (37) is movably positioned on the die set guide post (14).

12. The positive and negative finishing production dual-purpose oil press of claim 1, wherein: the upper driving oil cylinder (21) is connected with a sliding block (23), and the upper die (22) is arranged on the sliding block (23).

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