CN215431012U

CN215431012U - Hydraulic control fast forward press

Info

Publication number: CN215431012U
Application number: CN202121007256.7U
Authority: CN
Inventors: 高尔荣; 童玉龙
Original assignee: Zhejiang Bolei Heavy Duty Machine Tool Manufacturing Co Ltd
Current assignee: Changchuan Boots Dalian Co ltd
Priority date: 2021-05-12
Filing date: 2021-05-12
Publication date: 2022-01-07
Anticipated expiration: 2031-05-12

Abstract

The utility model discloses a hydraulic control fast forward press, which comprises a rack, wherein a fixed die is fixedly arranged above the rack, a movable die is slidably arranged above the rack, a rotatable cam shaft is supported above the rack, the movable die is positioned between the cam shaft and the fixed die, a flywheel is arranged on the cam shaft, a connecting rod is sleeved on a cam part of the cam shaft, a first motor is fixed on the rack, the first motor is in power fit with the flywheel, the hydraulic control fast forward press comprises an actuating mechanism which is slidably arranged on the rack, the actuating mechanism is positioned between the movable die and the connecting rod, the actuating mechanism is fixedly connected with the movable die, the actuating mechanism is hinged with the connecting rod, and the hydraulic control fast forward press also comprises a control mechanism which is arranged on the rack and is used for driving the actuating mechanism; when the movable die works, the action of the movable die is quicker and the movable die quickly moves through the idle stroke of the press by the extension and contraction of the actuating mechanism, so that the working stroke of the pressure is greatly completed; the control mechanism controls the telescopic distance and speed of the actuating mechanism to the actuating mechanism, and is applicable to various working conditions.

Description

Hydraulic control fast forward press

Technical Field

The utility model relates to a press field especially relates to a hydraulic control fast forward press.

Background

The present stamping rapid prototyping is widely used in various fields, and the use of a press is more common. The traditional mechanical press machine adopts a crank block type mechanism, an asynchronous motor drives a flywheel through a triangle belt during working, the crank block mechanism is driven through a gear pair and a clutch, a slide block and a male die are made to go down linearly, and punching is completed. The mechanical structure is inseparable in the punching stroke and the idle stroke, so that large energy waste is caused in the idle stroke, and the stroke is difficult to adjust due to the limitation of the crank-slider mechanism.

Chinese patent CN105082592A, which describes a servo press with a main motor translational symmetric toggle rod for fast idle stroke and slow pressurization, wherein a servo motor drives a transmission shaft of an idle stroke device to rotate through a small belt pulley and a large belt pulley, two sides of the transmission shaft are provided with worms, the worms drive a worm wheel to rotate and drive a first nut thereon to rotate, so that a transmission screw rod moves downwards, wherein a lower end of the transmission screw rod is connected with an upper end of an upper toggle rod, a lower end of the upper toggle rod is connected with an upper end of a support seat, a lower end of the support seat is connected with an upper end of a connecting rod through a lower toggle rod, a lower end of the connecting rod is connected with an upper end of a main slider, the left and right sides of the main slider are connected with guide blocks, the guide blocks slide on guide rails, the guide rails are fixed on side walls of a machine body, the middle of the support seat is hinged with a left end of a main piston of a main transmission structure, the middle of the machine body is connected with a balance cylinder, one side of the balance cylinder is provided with a notch for introducing compressed air, a balance piston of the balance cylinder has an upward thrust under the pressure of the compressed air below, the lower end of the balance piston extends out of the middle of the lower cover and is fixed with the shell of the main transmission structure. The press shown by the scheme performs fast forward operation through the lead screw, but the lead screw can be subjected to large impact load when the press works, so that the teeth of the lead screw are easy to damage.

SUMMERY OF THE UTILITY MODEL

In order to solve the problems, the utility model aims to provide a press that can fast advance idle stroke.

In order to achieve the purpose, the utility model adopts the following technical scheme: the automatic transmission mechanism comprises a frame, frame top fixed mounting has the cover half seat, install the cover half on the cover half seat, frame top fixed mounting has the movable mould seat, slidable mounting has the movable mould on the movable mould seat, the movable mould seat supports rotatable camshaft in cover half seat right side frame top, the movable mould is located between camshaft and the cover half, install the flywheel on the camshaft, the cover is equipped with the connecting rod in the cam part of camshaft, be fixed with first motor in the frame, first motor and flywheel power fit, including sliding the setting actuating mechanism in the frame, actuating mechanism is located between movable mould and the connecting rod, actuating mechanism and movable mould fixed connection, actuating mechanism and connecting rod hinge, still including setting up the control mechanism who is used for driving actuating mechanism in the frame.

Preferably, the device further comprises a base body which is transparent at the left and the right, the control mechanism is fixed above the base body, the actuating mechanism is arranged in the base body in a sliding mode, and the movable die is connected with the base body in a sliding mode.

Preferably, the control mechanism comprises a first hydraulic cylinder, the actuating mechanism comprises a second hydraulic cylinder, the second hydraulic cylinder comprises a fixed end and a movable end, the fixed end is fixedly connected with the base body, the movable end can slide in the base body, the movable end is fixedly connected with the movable die, a plurality of oil pipes and exhaust pipes communicated with the interior are arranged at two ends of a cylinder body of the second hydraulic cylinder respectively, and the second hydraulic cylinder is communicated with the first hydraulic cylinder through the oil pipes.

Preferably, the first hydraulic cylinder is provided with an electric control valve for balancing load and controlling the on-off of the plurality of oil pipes, the electric control valve is communicated with the first hydraulic cylinder, and the electric control valve is communicated with the second hydraulic cylinder through the plurality of oil pipes.

Preferably, a multi-way piece with a plurality of outlets is arranged between the electric control valve and the oil pipes, the outlets of the multi-way piece are communicated with each other, and the multi-way piece is communicated with the second hydraulic cylinder through the oil pipes.

Preferably, the hydraulic cylinder device further comprises a sliding sleeve, the sliding sleeve is fixedly connected with the second hydraulic cylinder, the cylinder body of the second hydraulic cylinder is located on the inner side of the sliding sleeve, and the sliding sleeve is located in the base body and is in sliding connection with the base body.

Preferably, the base body is fixedly provided with a fixed plate, the fixed end of the second hydraulic cylinder is connected to the fixed plate, the fixed plate is provided with two hinged parts in a protruding mode, one end of the connecting rod is located between the hinged parts, a hinged shaft is rotatably arranged between the hinged parts, and the hinged shaft penetrates through the connecting rod.

Preferably, the control mechanism further comprises a second motor and a fast forward screw, the second motor and the fast forward screw being in powered communication, the fast forward screw being articulated to the piston of the first hydraulic cylinder.

Preferably, the rack is provided with a cutting mechanism for cutting a fixed length and a pushing mechanism for moving the workpiece to a specified area, and the cutting mechanism and the pushing mechanism are positioned on the front side of the fixed die.

Preferably, the flywheel is hollow, the interior of the flywheel is reinforced by a plurality of connecting rods, and the interior of the flywheel is filled with filler.

In the technical scheme of the utility model, when the movable mold works, the action of the movable mold is quicker through the extension and retraction of the actuating mechanism, and the movable mold quickly moves through the idle stroke of the press to complete the working stroke with extremely large pressure; the control mechanism controls the telescopic distance and speed of the actuating mechanism to the actuating mechanism, and can be suitable for various working conditions; in the scheme, the control mechanism and the executing mechanism both adopt a hydraulic mode for fast forwarding, so that the hydraulic pressure is more stable in fast forwarding, and when the hydraulic pressure bears impact load, the hydraulic pressure is safer than a threaded fast forwarding mechanism, and can bear larger impact; the flywheel is a hollow part, and the weight of the flywheel is increased by adding fillers into the flywheel, so that the cost of the flywheel can be reduced under the condition of ensuring the punching force, and the fillers with different densities and different qualities can be filled in the same flywheel in different application scenes, so that the flywheel with the required weight is obtained; in the disassembly of the flywheel, the weight of the flywheel can be reduced by directly releasing the filler in the flywheel, and the aim of convenient disassembly and replacement is fulfilled.

Drawings

FIG. 1 is a schematic view of a hydraulically controlled fast forward press;

FIG. 2 is a schematic view of another angle of FIG. 1;

FIG. 3 is a cross-sectional view taken at A-A of FIG. 2;

FIG. 4 is a cross-sectional view taken at B-B of FIG. 3;

FIG. 5 is a schematic view of a partial structure of an actuator;

fig. 6 is a schematic structural view of the second closing plate.

Detailed Description

Reference will now be made in detail to the embodiments of the present invention, examples of which are illustrated in the accompanying drawings, wherein like reference numerals refer to the same or similar elements or elements having the same or similar function throughout. The embodiments described below by referring to the drawings are exemplary intended for explaining the utility model and are not to be construed as limiting the utility model.

In the description of the present invention, it is to be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "clockwise", "counterclockwise", and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and are only for convenience of description and simplicity of description, and do not indicate or imply that the device or element being referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore, should not be considered as limiting the present invention.

Furthermore, the terms "first", "second" and "first" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of the utility model, unless otherwise specified, "a plurality" means two or more unless explicitly defined otherwise.

In the present invention, unless otherwise expressly specified or limited, the terms "mounted," "connected," "secured," and the like are to be construed broadly and can include, for example, fixed connections, detachable connections, or integrally connected; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meaning of the above terms in the utility model can be understood according to specific situations by those skilled in the art.

In the present application, unless expressly stated or limited otherwise, the first feature "on" or "under" the second feature may comprise direct contact between the first and second features, or may comprise contact between the first and second features not directly but via another feature. Also, the first feature being "on," "above" and "over" the second feature includes the first feature being directly on and obliquely above the second feature, or merely indicating that the first feature is at a higher level than the second feature. A first feature being "under," "below," and "beneath" a second feature includes the first feature being directly under and obliquely below the second feature, or simply meaning that the first feature is at a lesser elevation than the second feature.

The utility model takes the position of the frame 1 in figure 1 as the lower side and the lower end; the position of the first motor 45 is taken as the upper side and the upper end; the position of the flywheel 44 is the front side, and the front end is the basic orientation.

As shown in fig. 1, fig. 2 and fig. 4, a hydraulic control fast forward press comprises a frame 1, a fixed die holder 21 is fixedly arranged on the top of the frame 1 from right to left, the movable die holder 31 and the supporting seat 41, the movable die holder 31 is positioned on the right side of the fixed die holder 21, the fixed die 22 is fixedly installed on the fixed die holder 21, a sliding cavity is formed in the movable die holder 31 in a left-right through mode, the movable die 32 is arranged in the sliding cavity in a sliding fit mode, the supporting seat 41 is formed in the left-right through mode to form a power cavity 42, a cam shaft 43 is installed in the power cavity 42 in a rotating mode, the cam shaft 43 extends forwards to penetrate through the supporting seat 41, the cam part of the cam shaft 43 is positioned in the power cavity 42, a flywheel 44 is installed on the cam shaft 43, the flywheel 44 is positioned on the front side of the supporting seat 41, a first motor 45 is fixedly connected above the supporting seat 41, the first motor 45 is in power fit with the flywheel 44, a connecting rod 42 is sleeved on the cam part of the cam shaft 43, and the connecting rod 42 is hinged to the movable die 32; with such an arrangement, the first motor 45 is started to drive the cam shaft 43 to rotate through the flywheel 44, and the cam portion of the cam shaft 43 pushes the movable mold 32 through the connecting rod 42, so as to realize the left-right sliding of the movable mold 32.

In this embodiment, the second hydraulic cylinder 71 includes a fixed end and a movable end, the fixed end does not displace in the base 51, the movable end slides in the base 51, in this embodiment, the actuating piston rod 713 is a fixed end, the second cylinder 711 is a movable end, the fixed plate 52 is fixed in the base 51, the other end of the actuating piston rod 713 of the second hydraulic cylinder 71 is installed on the fixed plate 52, the fixed plate 52 protrudes leftward to form two hinge portions 53, a hinge shaft 54 is rotatably installed between the two hinge portions 53, the other end of the link rod 42 is located between the two hinge portions 53, and the hinge shaft 54 penetrates through the link rod 42.

In this embodiment, a cutting mechanism 23 for cutting a fixed length is installed on the front side of the fixed die holder 21, and a pushing mechanism 24 for conveying a workpiece to a designated area is also installed, and the pushing mechanism 24 is located on the left side of the cutting mechanism 23.

In this embodiment, the flywheel 44 is a hollow wheel, wherein the flywheel 44 is reinforced by a plurality of connecting shafts, and the weight of the flywheel 44 is changed by filling the inside with fillers of different masses.

As shown in fig. 3 and 4, in the present embodiment, the present embodiment further includes a telescopic actuator 7 and a control mechanism 6 for driving the actuator 7, the speed of movement and the length of telescopic movement of the actuator 7 are adjusted by the control mechanism 6, and one end of the actuator 7 is hinged to the connecting rod 42, and the other end is fixedly connected to the movable mold 32; with the arrangement, when the movable mold 32 moves left and right, the actuating mechanism 7 performs telescopic action so as to accelerate the fast forward and fast backward of the movable mold 32; under different working condition requirements, the actuator 7 can further adjust the distance between the movable mold 32 and the fixed mold 22 by adjusting the telescopic length of the actuator.

In this embodiment, the device further includes a base 51 slidably disposed above the rack 1 and penetrating from left to right, the actuator 7 is located in the base 51, the actuator 7 is slidably disposed in the base 51, the movable mold 32 is slidably engaged with the base 51, and the base 51 is hinged to the connecting rod 42.

Further preferably, one end of the base 51 is located in the sliding cavity of the movable die holder 31 and is in sliding fit, and the other end of the base 51 is located in the power cavity 42 of the supporting seat 41 and is in sliding fit; with this arrangement, the movable die holder 31 and the support base 41 can further restrict the sliding direction of the base 51. The front side and the rear side of the base body 51 are both provided with avoidance holes communicated with the inside, the cam shaft 43 penetrates through the base body 51 and passes through the avoidance holes, and the area of the avoidance holes is larger than that of the cross section of the cam shaft 43; so set up, because of connecting rod 42 is articulated with base member 51, so under camshaft 43's effect, connecting rod 42 drives base member 51 reciprocating motion, and the setting of dodging the hole makes the base member avoid base member 51 and camshaft 43 to bump at reciprocating motion's in-process.

As shown in fig. 3 and 5, the control mechanism 6 includes a box 65 and a first hydraulic cylinder 61, the first hydraulic cylinder 61 is fixedly installed in the box 65, the box is fixed above the base 51, the first hydraulic cylinder 61 includes a first cylinder 611 and a first piston 612, the first piston 612 is slidably connected with the first cylinder 611, the first piston 612 is located in the first cylinder 611 and extends through the first cylinder 611 leftwards, a feeding cavity is formed on the left side end surface of the first cylinder 611 by recessing rightwards, an internal thread bushing 62 is fixedly arranged in the feeding cavity, the control mechanism 6 further includes a second motor 64 and a screw 63, the screw 63 is rotatably installed in the box 65, the second motor 64 is installed on the left side of the box 65 and is in power connection with the screw 63, and the screw 63 is in threaded connection with the internal thread bushing 62; the actuator 7 comprises a second hydraulic cylinder 71, the second hydraulic cylinder 71 comprises a second cylinder 711, a second piston 712 and an actuator piston rod 713, the second piston 712 is located in the second cylinder 711 and is in sliding fit, the actuator piston rod 713 is mounted on the second piston 712 and extends leftwards through the second cylinder 711; the second hydraulic cylinder 71 is slidably arranged in the base body 51, the first hydraulic cylinder 61 is communicated with the second hydraulic cylinder 71 through an oil pipe, a plurality of exhaust pipes 73 are arranged on the second hydraulic cylinder 71, and the positions of the exhaust pipes 73 in the second hydraulic cylinder 71 and the positions communicated with the first hydraulic cylinder 61 are positioned on two sides of the second piston 712; in the present embodiment, the position where the first hydraulic cylinder 61 and the second hydraulic cylinder 71 communicate is on the right side of the second cylinder 711, and the exhaust pipe 73 is on the left side of the second cylinder 711; with this arrangement, a medium under pressure, such as pressure or water, is filled between the inside of the first hydraulic cylinder 61 and the right side of the second piston 612 in the second hydraulic cylinder 61, and when the idle stroke needs to be fast forwarded: the second motor 64 drives the screw rod 63 to rotate, the screw rod 63 drives the internal thread shaft sleeve 62 to move right through threads, the internal thread shaft sleeve 62 drives the first piston 612 to move right, the first piston 612 moves right to send a medium in the first cylinder 611 into the second cylinder 711 through an oil pipe, new medium continuously flows into the right side of the second cylinder 711, the pressure on the right side of the second piston 712 in the second cylinder 711 is gradually increased, the flowing medium pushes the second cylinder 711 to move right, air on the left side of the second piston 712 is discharged from the second cylinder 711 through the plurality of exhaust pipes 73, and the second cylinder 711 drives the movable mold 32 to move right.

Further preferably, the actuator 7 further comprises a sliding sleeve 72, and the second hydraulic cylinder 71 is located in the sliding sleeve 72 and is fixedly connected; a sliding sleeve 72 is located within the base 51 and is a sliding fit; with the arrangement, the sliding sleeve 72 is driven to move by moving the second cylinder body 711 to the right, so that friction between the second hydraulic cylinder 71 and the base body in the movement can be avoided, and the service life can be prolonged by replacing the sliding sleeve 72.

Further preferably, the control mechanism 6 further comprises an electric control valve 66 which is installed on the right side of the first hydraulic cylinder 61 and has the functions of balancing load and switching on and off, the electric control valve 66 is communicated with the first cylinder 611 of the first hydraulic cylinder 61, and the electric control valve 66 is communicated with the right side end of the second cylinder 711 of the second hydraulic cylinder 71 through an oil pipe; so configured, the first hydraulic cylinder 61 and the second hydraulic cylinder 71 can be blocked or communicated through the electric control valve 66, and the load can be balanced.

Further preferably, the control mechanism 6 includes a multi-way member 67 installed between the electric control valve 66 and the oil pipe, in this embodiment, the multi-way member 67 is a five-way pipe, one port of the five-way pipe is communicated with the electric control valve 66, the other ports of the five-way pipe are all installed and connected with one oil pipe and four oil pipes, and the four oil pipes are all communicated with the second hydraulic cylinder 71; in other embodiments, the multi-way piece can also be a three-way pipe, a four-way pipe and the like, and more oil pipes can be connected; with this arrangement, more medium can be introduced into the second cylinder 711 per unit time, so that the actuator 7 reacts more quickly.

As shown in fig. 5 and 6, in the present embodiment, the second cylinder 711 of the second hydraulic cylinder 71 includes a through pressure cylinder 7111, two ends of the pressure cylinder 7111 are respectively sealed by a first sealing plate 7112 and a second sealing plate 7113, the first sealing plate 7112 is located at the left side of the pressure cylinder 7111, the second sealing plate 7113 is located at the right side of the pressure cylinder 7111, a first sealing portion and a second sealing portion 7116 are respectively protruded on the first sealing plate 7112 and the second sealing plate, the first sealing portion 7116 and the second sealing portion 7116 are located in the pressure cylinder 7111 to seal the pressure cylinder 7111, and the first sealing plate 7112, the second sealing plate 7113 and the pressure cylinder 7111 are fixedly connected; a plurality of U-bearing through holes 7114 are formed in the second sealing plate 7113, two outlets of each through hole 7114 are respectively positioned on the inner side and the outer side of the pressure cylinder body 7111, and each outlet positioned on the outer side is connected with an oil pipe; in this embodiment, the oil pipe is a hose. In other embodiments, to avoid the arrangement of too many hoses, the first hydraulic cylinder 61 and the second hydraulic cylinder 71 are communicated by connecting a large-diameter hard pipe. Further preferably, a connecting pipe 74 is installed at an outlet of the through hole 7114 for connecting an oil pipe, the other end of the connecting pipe 74 extends through the first sealing plate 7112, and an oil pipe is connected between the other end of the connecting pipe 74 and the multi-way member 67.

Further preferably, a plurality of fixing holes 7115 are formed in the second sealing plate 7113, the fixing holes 7115 are located outside the pressure cylinder body 7111, locking screws 7115 are fixed in the fixing holes 7115, the locking screws 7115 extend leftwards to penetrate through the first sealing plate 7112, and the locking nuts are matched with the locking screws 7115 to lock the first sealing plate 7112, the second sealing plate 7113 and the pressure cylinder body 7111, so that the fixed connection is realized.

In other embodiments, different from the above embodiments, the actuating piston 713 extends rightward, the second cylinder 711 is fixed on the fixed plate 52, the actuating piston rod 713 is fixedly connected with the movable mold 32, the exhaust pipe 73 is located on the right side, the second sealing plate 7113 is located on the left side of the first sealing plate 7112, the medium in the first hydraulic cylinder 61 enters from the left side of the second hydraulic cylinder 71, so as to push the second piston 712 to drive the actuating piston rod 713 to move rightward, and when the arrangement is made, the second cylinder 711 is a movable end, and the actuating piston 713 is a fixed end; the remaining features are the same as in example 1.

In the description herein, references to the description of the term "one embodiment," "some embodiments," "an example," "a specific example," or "some examples," etc., mean that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the utility model. In this specification, the schematic representations of the terms used above do not necessarily refer to the same embodiment or example. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples.

Although embodiments of the present invention have been shown and described above, it is understood that the above embodiments are exemplary and should not be construed as limiting the present invention, and that variations, modifications, substitutions and alterations can be made in the above embodiments by those of ordinary skill in the art without departing from the principle and spirit of the present invention.

Claims

1. The utility model provides a hydraulic control fast forward press, which comprises a frame (1), fixed mounting has cover half seat (21) in frame (1), install cover half (22) on cover half seat (21), frame (1) top fixed mounting has movable mould seat (31), slidable mounting has movable mould (32) on movable mould seat (31), movable mould seat (31) are located cover half seat (21) right side, frame (1) top is supported has rotatable camshaft (43), movable mould (32) are located between camshaft (43) and cover half (22), install flywheel (44) on camshaft (43), the cover is equipped with connecting rod (42) on the cam part of camshaft (43), be fixed with first motor (45) on frame (1), first motor (45) and flywheel (44) power fit, a serial communication port: the device comprises an actuating mechanism (7) which is arranged on a rack (1) in a sliding manner, wherein the actuating mechanism (7) is positioned between a movable die (32) and a connecting rod (42), the actuating mechanism (7) is fixedly connected with the movable die (32), the actuating mechanism (7) is hinged with the connecting rod (42), and the device also comprises a control mechanism (6) which is arranged on the rack (1) and is used for driving the actuating mechanism (7).

2. A hydraulically controlled fast forward press as claimed in claim 1, characterized in that: the device also comprises a left-right through base body (51), the control mechanism (6) is fixed above the base body (51), the actuating mechanism (7) is arranged in the base body (51) in a sliding mode, and the movable die (32) is connected with the base body (51) in a sliding mode.

3. A hydraulically controlled fast forward press as claimed in claim 2, characterized in that: control mechanism (6) include first pneumatic cylinder (61), actuating mechanism (7) include second pneumatic cylinder (71), second pneumatic cylinder (71) are including stiff end and removal end, stiff end and base member (51) fixed connection, it is located base member (51) and slides to remove the end, remove end and movable mould (32) fixed connection, the cylinder body both ends of second pneumatic cylinder (71) are equipped with a plurality of oil pipes and the blast pipe of intercommunication inside respectively, second pneumatic cylinder (71) communicate through a plurality of oil pipes and first pneumatic cylinder (61).

4. A hydraulically controlled fast forward press as claimed in claim 3, characterized in that: an electric control valve (66) used for balancing load and controlling the on-off of a plurality of oil pipes is installed on the first hydraulic cylinder (61), the electric control valve (66) is communicated with the first hydraulic cylinder (61), and the electric control valve (66) is communicated with the second hydraulic cylinder (71) through the oil pipes.

5. A hydraulically controlled fast forward press as claimed in claim 4, characterized in that: be equipped with the multi-pass (67) that has a plurality of exports between electric control valve (66) and a plurality of oil pipe, the export of multi-pass (67) communicates each other, and multi-pass (67) communicates with second pneumatic cylinder (71) through a plurality of oil pipe.

6. A hydraulically controlled fast forward press as claimed in claim 3, characterized in that: the hydraulic cylinder is characterized by further comprising a sliding sleeve (72), the sliding sleeve (72) is fixedly connected with a second hydraulic cylinder (71), a cylinder body of the second hydraulic cylinder (71) is located on the inner side of the sliding sleeve (72), and the sliding sleeve (72) is located in the base body (51) and is in sliding connection with the base body.

7. A hydraulically controlled fast forward press as claimed in claim 3, characterized in that: the base body (51) is fixedly provided with a fixed plate (52), the fixed end of the second hydraulic cylinder (71) is connected to the fixed plate (52), two hinged parts (53) are protruded on the fixed plate (52), one end of the connecting rod (42) is positioned between the hinged parts (53), hinged shafts (54) are rotatably arranged between the hinged parts (53), and the hinged shafts (54) penetrate through the connecting rod (42).

8. A hydraulically controlled fast forward press as claimed in claim 3, characterized in that: the control mechanism (6) further comprises a second motor (64) and a fast-forward screw (63), the second motor (64) is in power connection with the fast-forward screw (63), and the fast-forward screw (63) is hinged with the piston of the first hydraulic cylinder (61).

9. A hydraulically controlled fast forward press as claimed in claim 1, characterized in that: a cutting mechanism (23) for cutting a fixed length and a pushing mechanism (24) for moving a workpiece to a specified area are mounted on the rack (1), and the cutting mechanism (23) and the pushing mechanism (24) are located on the front side of the fixed die (22).

10. A hydraulically controlled fast forward press as claimed in claim 1, characterized in that: the flywheel (44) is hollow, the inside of the flywheel (44) is reinforced through a plurality of connecting rods, and the inside of the flywheel (44) is filled with fillers.