CN214813932U - Press machine - Google Patents

Abstract

The application discloses a press machine, which comprises a die carrier structure, a punch assembly, a female die and an elastic part, wherein the die carrier structure comprises a first die plate and a second die plate which are oppositely arranged; the punch assembly comprises a first punch and a second punch which are oppositely arranged, the first punch and the second punch are used for punch forming of a to-be-formed object, the first punch is connected with the first template, and the second punch is connected with the second template; the female die comprises at least one through hole, and the through hole is matched with the second punch to form an accommodating cavity for accommodating the object to be molded; the elastic piece is connected with the first template, is opposite to the second template and is arranged at intervals, and the elastic piece can generate acting force on the second template under the driving of the first template so as to adjust the position of the second punch. Through the mode, the pressing device can adjust the object to be molded in the accommodating cavity in the pressing process of the press machine.

Description

Press machine

Technical Field

The application relates to the technical field of punch forming, in particular to a press machine.

Background

Stamping has many unique advantages over other processes. For example, the processed parts have stable quality and good consistency; parts which can not be or are difficult to manufacture by other processing methods, have thin walls, light weight, good rigidity, high surface quality and complex shapes can be obtained; the material utilization rate is high, the processing efficiency is high, the operation is convenient and the production cost is low. Therefore, press forming is widely used in the field of manufacturing.

In the long-term research and development process, the inventor of the application finds that the objects to be molded in the accommodating cavity of the press are easy to stack, and the density is uneven, so that the consistency of the pressed products is influenced. And once the press is started, the press is difficult to adjust the object to be molded in the accommodating cavity.

SUMMERY OF THE UTILITY MODEL

The technical problem that this application mainly solved provides a press, can adjust the object of waiting to form in the holding intracavity at the pushing down in-process of press.

In order to solve the technical problem, the application adopts a technical scheme that: providing a press machine, wherein the press machine comprises a die carrier structure, a punch assembly, a female die and an elastic part, and the die carrier structure comprises a first die plate and a second die plate which are oppositely arranged; the punch assembly comprises a first punch and a second punch which are oppositely arranged, the first punch and the second punch are used for punch forming of a to-be-formed object, the first punch is connected with the first template, and the second punch is connected with the second template; the female die comprises at least one through hole, and the through hole is matched with the second punch to form an accommodating cavity for accommodating the object to be molded; the elastic piece is connected with the first template, is opposite to the second template and is arranged at intervals, and the elastic piece can generate acting force on the second template under the driving of the first template so as to adjust the position of the second punch.

Wherein the elastic member comprises a nitrogen spring.

The press machine further comprises a pressure rod, the pressure rod is connected with the second template and is opposite to the elastic piece and arranged at intervals, and the pressure rod and the elastic piece are coaxially arranged.

And the distance between the elastic piece and the pressure rod is smaller than the distance between the first punch and the surface of the female die.

Wherein, the pressure bar includes the telescopic link to can adjust the length of pressure bar, and then adjust the interval between pressure bar and the elastic component.

Wherein, the elastic component is two at least, and two elastic component axisymmetric distributions.

The press machine further comprises a regulating and controlling assembly, wherein the regulating and controlling assembly is opposite to the second template and is arranged at intervals; the regulating assembly comprises a driving piece and a stop piece; the driving part is used for driving and adjusting the position of the second template, and the stopping part is used for limiting the position boundary of the second template.

The press machine further comprises a connecting assembly connected with the first template and used for connecting the first template with a pressure source so as to provide impact force for the first punch.

The connecting assembly comprises a main body piece, a first connecting piece, a second connecting piece and a pressure sensor; the main body part is connected with a first connecting piece and a second connecting piece, the first connecting piece is used for being connected with a pressure source of the press machine, the second connecting piece is arranged opposite to the first connecting piece, the second connecting piece is connected with the first template, and the pressure sensor is coaxially arranged with the main body part.

The press machine further comprises a driving cylinder and a driving cylinder control assembly, and the driving cylinder is connected with the first connecting piece; the driving cylinder control assembly comprises a first pipeline, a second pipeline and a regulating valve, the first pipeline is used for communicating a medium source with a first cavity of the driving cylinder, the second pipeline is used for communicating the medium source with a second cavity of the driving cylinder, and the regulating valve is arranged on the second pipeline and communicated with the first pipeline so that medium flow in the first pipeline can control the regulating valve.

The beneficial effect of this application is: in contrast to the prior art, the present application provides a press comprising a die carrier structure comprising a first die plate and a second die plate arranged opposite to each other; the punch assembly comprises a first punch and a second punch which are oppositely arranged, the first punch and the second punch are used for punch forming of a to-be-formed object, the first punch is connected with the first template, and the second punch is connected with the second template; the female die comprises at least one through hole, and the through hole is matched with the second punch to form an accommodating cavity so as to accommodate the object to be molded; the elastic piece is connected with the first template, is opposite to the second template and is arranged at intervals, and the elastic piece can generate acting force on the second template under the driving of the first template so as to adjust the position of the second punch. Through the mode, the position of second drift can be adjusted through the elastic component to this application in the pushing down process of press, and then adjusts the shape of waiting to forming in the holding chamber.

Drawings

FIG. 1 is a schematic diagram of a press according to an embodiment of the present disclosure;

FIG. 2 is a schematic view of a connecting assembly according to an embodiment of the present disclosure;

FIG. 3 is a schematic illustration of a press according to another embodiment of the present disclosure;

FIG. 4 is a schematic diagram of a drive cylinder control assembly according to an embodiment of the present application;

FIG. 5 is a schematic structural diagram of an externally controlled check valve according to an embodiment of the present application;

FIG. 6 is a schematic diagram illustrating the operation of the drive cylinder control assembly in one embodiment of the present application;

FIG. 7 is a schematic diagram of the operation of a drive cylinder control assembly in another embodiment of the present application;

FIG. 8 is a schematic diagram of the operation of a drive cylinder control assembly in accordance with yet another embodiment of the present application;

fig. 9 is a schematic diagram of a press according to another embodiment of the present disclosure.

Detailed Description

The present application will be described in further detail with reference to the following drawings and examples. It is to be noted that the following examples are only illustrative of the present application, and do not limit the scope of the present application. Likewise, the following examples are only some examples and not all examples of the present application, and all other examples obtained by a person of ordinary skill in the art without any inventive step are within the scope of the present application.

The terms "first," "second," "third," "fourth," and the like in the description and in the claims of the present application and in the drawings described above, if any, are used for distinguishing between similar elements and not necessarily for describing a particular sequential or chronological order. It is to be understood that the data so used is interchangeable under appropriate circumstances such that the embodiments of the application described herein are, for example, capable of operation in sequences other than those illustrated or otherwise described herein. Furthermore, the terms "comprises," "comprising," and "having," and any variations thereof, are intended to cover a non-exclusive inclusion, such that a process, method, system, article, or apparatus that comprises a list of steps or elements is not necessarily limited to those steps or elements expressly listed, but may include other steps or elements not expressly listed or inherent to such process, method, article, or apparatus.

The application provides a press machine, which is used for carrying out extrusion forming on a to-be-formed object. Referring to fig. 1, fig. 1 is a cross-sectional view of a press according to an embodiment of the present application.

As shown in fig. 1, the press machine includes a die frame structure 11, a punch assembly 12, a die 13, and an elastic member 14.

The formwork structure 11 comprises a first formwork panel 111 and a second formwork panel 112 arranged opposite each other.

The punch assembly 12 includes a first punch 121 and a second punch 122 disposed opposite to each other, and is used for performing punch forming on a to-be-formed object. The first punch 121 is connected to the first die plate 111, and the second punch 122 is connected to the second die plate 112. The first and second dies 111 and 112 can move to respectively move the first and second punches 121 and 122.

The female die 13 includes at least one through hole 131, and the through hole 131 and the second punch 122 cooperate to form a receiving cavity for receiving the object to be molded. The first punch 121 is pressed into the accommodating cavity to punch the object to be molded.

The elastic member 14 is connected to the first form 111, and is spaced apart from and opposite to the second form 112. When the first mold plate 111 is not pressed down, the elastic member 14 is not in contact with the second mold plate 112 with a certain gap therebetween. When the first mold plate 111 is pressed downwards, the elastic member 14 can be driven by the first mold plate 111 to contact with the second mold plate 112 and generate an acting force, so that the second mold plate 112 generates a certain displacement, the position of the second punch 122 connected with the second mold plate 112 is adjusted, the object to be molded in the accommodating cavity is adjusted, and the effect of the next step of punch forming is improved.

In one embodiment, the number of elastic members is at least two. When the number of the elastic pieces is multiple, at least two elastic pieces are distributed in central symmetry. Specifically, the two elastic members may be symmetrically distributed on both sides of the punch assembly with the punch assembly as a center, and the other elastic members may be disposed at any position of the first die plate in combination with actual requirements, which is not particularly limited.

In one embodiment, the second punch 122 includes a next punch 1221 and a next punch 1222. One end of the next punch 1221 is fixed to a plane, and the other end is disposed in the through hole 131. Specifically, the lower punch 1221 further includes a through hole, one end of the lower punch 1222 penetrates through the through hole in the lower punch 1221 and enters the through hole 131, and the other end is connected to the second template 112. The shape to be formed in the accommodating cavity can be adjusted by controlling the position of the lower punch 1222 in the pressing process.

In one embodiment, the press further comprises a pressure bar 15, the pressure bar 15 being connected to the second die plate 112, opposite to and spaced apart from the elastic member 14, the pressure bar 15 being arranged coaxially with the elastic member 14. When the press is not in operation, i.e. the first die plate 111 is not moved downward, the elastic member 14 connected to the first die plate 111 does not contact the pressure bar 15, and a certain distance is left between the elastic member 14 and the pressure bar 15. When the first template 111 is pressed downwards, the elastic part 14 connected with the first template 111 starts to move downwards, and after the elastic part is contacted with the pressure rod 15, a certain acting force is applied to the pressure rod 15, and the pressure rod 15 generates an acting force on the second template 112, so that the position of a lower secondary punch 1222 connected with the second template 112 is adjusted, further, the object to be formed in the accommodating cavity is adjusted, the consistency of the density of the object to be formed in the accommodating cavity is improved, the object to be formed is more uniform and compact, and the effect of the next-step punch forming is improved.

Wherein, the distance between the pressure rod 15 and the elastic piece 14 is smaller than the distance between the first punch 121 and the surface of the female die 13. Specifically, the distance between the elastic member 14 and the pressure bar 15 refers to the vertical distance between two surfaces of the elastic member 14 opposite to the pressure bar 15 when the first template 111 is not pressed down; the distance between the first punch 121 and the die 13 refers to a vertical distance between two surfaces of the first punch 121 opposite to the die 13 when the first die plate 111 is not pressed down. The distance between the elastic part 14 and the pressure rod 15 is controlled to be smaller than the distance between the first punch 121 and the surface of the female die 13, so that when the first die plate 111 is pressed downwards, before the first punch 121 enters the accommodating cavity to press powder to be formed, the elastic part 14 is firstly contacted with the pressure rod 15, the lower punch 1222 connected with the second die plate 112 is shaken, the powder in the accommodating cavity is driven to shake to a certain degree, the consistency of the powder density in the accommodating cavity is improved, the elastic part is more uniform and compact, and further the subsequent pressing effect is improved.

In one embodiment, the pressure rod 15 may be a telescopic rod to adjust the length of the pressure rod 15, and thus the distance between the pressure rod 15 and the elastic member 14. In other embodiments, the pressure bar may be plural. Specifically, the number of the pressure rods is the same as that of the elastic members, that is, one pressure rod is arranged at a corresponding position of each elastic member. Specifically, the pressure rod and the elastic piece are arranged oppositely and at intervals and are positioned on the same axis.

In an embodiment, the press further comprises a conditioning assembly 16. The regulating member 16 is disposed on a side of the second template 112 away from the first template 111, and is spaced apart from the second template 112. Specifically, the adjustment assembly 16 includes a stop 161 and a drive 162. The stopper 161 is fixed on a plane for limiting the distance range of the downward movement of the second template 112, i.e., defining the position boundary of the movement of the second template 112; one end of the driving member 162 is fixed on a plane, and the other end is connected to the second mold plate 112 for driving and adjusting the position of the second mold plate 112. The stopper 161 and the driving member 162 may be fixed on the same plane, or may be fixed on different planes according to their heights.

Specifically, the actuator 162 may be a floating cylinder. The floating cylinder is a mechanism for guiding the piston to perform linear motion in the cylinder, and a piston rod of the floating cylinder is fixedly connected with the second mold plate 112, so as to drive and adjust the position of the second mold plate 112.

In the above embodiment, the first die plate 111 is pressed down, and the first punch 121 and the elastic member 14 connected to the first die plate 111 start to move downward by the upper die plate. Before the first punch 121 enters the through hole 131, the elastic member 14 contacts the pressure rod 15, and the pressure rod 15 is acted by the elastic member 14 to drive the second die plate 112 to move downwards, so as to drive the lower punch 1222 to move downwards. When second template 112 is moved to a certain position, floating cylinder 162 starts to apply an upward force to second template 112 to drive second template 112 to return to its initial position, and elastic member 14 is retracted by the reaction force of pressure rod 15, so as to ensure normal rebound of second template 112. The lower punch 1222 moves downwards under the driving of the second template 112 and then rebounds upwards, so that a shaking-like effect is formed, a certain stirring effect is generated on the powder to be formed in the accommodating cavity, the consistency of the powder density in the accommodating cavity can be improved, the powder is more uniform and compact, and the punch forming effect is improved.

In one embodiment, the elastic member 14 may be a mechanical component that works by elasticity, such as a coil spring, a spiral spring, a nitrogen spring, or the like. Wherein, the nitrogen spring is a novel elastic component which takes high-pressure nitrogen as working medium. The novel elastic spring has the advantages of small volume, large elasticity, long service life and gentle elasticity curve, and nitrogen is directly filled into the nitrogen spring without an additional air source, so that the mold can be conveniently installed and adjusted, and the control precision is high.

The present application further provides a connection assembly for connecting a first die plate 111 and a pressure source of a press. Referring to fig. 2, fig. 2 is a schematic view of a connecting member according to an embodiment of the present disclosure. The coupling assembly includes a first coupling member 21, a second coupling member 22, a body member 23 and a pressure sensor 24. The first connecting piece 21 is used for connecting a pressure source of the press machine, and the pressure source of the press machine can provide the power for pressing down the press machine; the second connecting piece 22 is arranged opposite to the first connecting piece 21 and is used for connecting a first template 111 of the press; the body member 23 is disposed generally between the first link member 21 and the second link member 22 for connecting the first link member 21 and the second link member 22; a pressure sensor 24 is arranged coaxially with the body member 23, on the same central axis, for monitoring the pressure provided by the pressure source. When the pressure sensor 24 is arranged coaxially with the main body 23, the measured pressure is the pressure at the center of the press, and the pressure can more accurately reflect the working pressure of the press.

The pressure sensor 24 may be located on a side of the first connecting member 21 away from the main body member 23, or on a side of the first connecting member 21 close to the main body member 23. In other embodiments, the pressure sensor 24 may be located on a side of the second connector 22 away from the body member 23 or on a side of the second connector 22 adjacent to the body member 23. The pressure sensor 24 is arranged coaxially with the body member 23, and the specific arrangement position may be any position on the central axis of the body member 23.

In one embodiment, the pressure sensor 24 is integrally provided with the body member 23, i.e. the pressure sensor 24 is integrally provided with the body member 23. Specifically, the pressure sensor 24 may be directly disposed in the main body 23 during machining, and may be machined and formed at the same time, or a corresponding slot position of the pressure sensor 24 may be reserved during machining of the main body 23. When the pressure sensor 24 is needed to monitor the working pressure of the press, the pressure sensor 24 can be directly inserted into the reserved slot position on the main body piece 23, and the pressure sensor 24 can start to work after being inserted to monitor the working pressure of the press. And when the press is standby or the working pressure does not need to be monitored, the pressure sensor 24 can be directly pulled out. After the pressure sensor 24 and the main body part 23 are integrally arranged, the pressure sensor 24 can directly monitor the pressure of the press machine during working, the pressure does not need to be monitored through the cooperation of parts such as a hydraulic cylinder, oil, a piston and the like, the equipment structure can be simplified, and the situations such as oil leakage and the like are avoided. Meanwhile, the phenomenon that the height of a pressed product is unstable due to piston retraction caused by oil leakage is avoided.

In one embodiment, pressure sensor 24 comprises a piezo-ceramic element. The piezoelectric ceramic element is a ceramic element which utilizes the reversibility of a piezoelectric effect and applies audio voltage to the piezoelectric ceramic element to generate mechanical vibration and generate sound. The piezoelectric ceramic element is a simple and light electroacoustic device, and has high sensitivity, no magnetic field spreading and overflowing, no need of copper wire and magnet, low cost, low power consumption, convenient repair, and convenient mass production. The piezoelectric ceramic element with a large area can also be used for detecting pressure and vibration, and the working principle is that mechanical vibration can be generated by applying audio voltage on the piezoelectric ceramic element by utilizing the reversibility of the piezoelectric effect, so that sound is produced. It also generates voltage and current if pressure is continuously applied to the piezoceramic wafer. The physical examination of the piezoelectric ceramic element is small, the structure is simple, and the monitoring precision is high.

The application also provides a press machine, please refer to fig. 3, and fig. 3 is a schematic structural diagram of the press machine in another embodiment of the application. The press comprises a connection assembly, a mould carrier structure 11 and a pressure sensor 24. Wherein, the coupling assembling includes relative first connecting piece 21 and second connecting piece 22 that sets up, and first connecting piece 21 and second connecting piece 22 are connected through main part 23. The first connecting piece 21 is used for connecting a pressure source of the press; the formwork structure 11 comprises a first formwork 111 and a second formwork 112 which are oppositely arranged, and the first formwork 111 is connected with the second connecting piece 22; the pressure sensor 24 is used for monitoring the working pressure of the press, and the pressure sensor 24 is arranged coaxially with the main body piece 23.

Wherein the press further comprises a punch assembly and a die 13. The punch assembly comprises a first punch 121 and a second punch 122 which are oppositely arranged, the first punch 121 and the second punch 122 are used for punch forming of a to-be-formed object, the first punch 121 is connected with the first template 111, and the second punch 122 is connected with the second template; the female die 13 includes at least one through hole, and the through hole and the second punch 122 cooperate to form a receiving cavity to receive the object to be molded. In other embodiments, the press may include the press components shown in FIG. 1.

In one embodiment, the pressure sensor 24 may be located between the first punch 121 and the second die plate 112 and disposed coaxially with the first punch 121 and the second die plate 112. The pressure generated at any position between the first punch 121 and the second die plate 112 during the punching process, which is monitored by the pressure sensor 24, is the working pressure of the press. In other embodiments, the pressure sensor may be located at any position on the central axis of the press.

The present application further provides a drive cylinder control assembly, please refer to fig. 4 and 5. Fig. 4 is a schematic structural diagram of a control assembly of a drive cylinder in an embodiment of the present application, and fig. 5 is a schematic structural diagram of an externally controlled check valve in an embodiment of the present application. The cylinder control assembly includes a first line 31, a second line 32, and a regulator valve 33. Wherein the first conduit 31 is adapted to communicate the medium source 39 with the first chamber 34 of the drive cylinder and the second conduit 32 is adapted to communicate the medium source 39 with the second chamber 35 of the drive cylinder. Specifically, the piston 30 divides the driving cylinder into a first cavity 34 and a second cavity 35, and the piston 30 between the first cavity 34 and the second cavity 35 is tightly attached to the cylinder body of the driving cylinder, so that media between the cavities are prevented from flowing mutually. Specifically, the medium in the drive cylinder control assembly may be a gas medium, a liquid medium, or other medium that can circulate through the drive cylinder control assembly. The regulating valve 33 is provided on the second pipe 32 and communicates with the first pipe 31. The flow of medium in the first line 31 can be controlled correspondingly after entering the regulating valve 33. In this application, the driving cylinder controlled by the driving cylinder control assembly may be in a vertical state, and the lower end of the piston 30 may be connected to the driven object to drive the displacement thereof.

In one embodiment, the regulator valve 33 may be an externally controlled one-way valve. The external control one-way valve 33 comprises an external control valve core 331 and an external control valve body 332, and the external control valve core 331 is communicated with the second cavity 35; the outer control valve body 332 includes a first port 3321 and a second port 3322, the first port 3321 communicating with the second line 32, the second port 3322 communicating with the first line 31. The flow of medium in the first line 31 may control the outer control spool 331 through the second port 3322. After the medium flow enters the second port 3322 of the external control valve body 332 from the first pipeline 31, the external control valve core 331 of the external control one-way valve 33 can be pushed to shift the position, and at this time, the medium flow in the second pipeline 32 can flow in the reverse direction, i.e. from the second cavity 35 through the external control one-way valve 33; when no medium flow enters the second port 3322 of the external control valve body 332 in the first pipeline 31, the medium in the second chamber 35 flows to the external control check valve 33, and pushes the external control valve core 331 to press the external control valve body 332, so that the external air valve body 332 is closed and the medium flow is prohibited. In this way, when the medium source 39 in the cylinder control assembly is abnormal and cannot normally supply medium flow to the pipeline, the medium in the second chamber 35 cannot flow out through the external control one-way valve 33, so that the piston 30 cannot fall down, and the safety is improved.

In one embodiment, the drive cylinder control assembly further comprises a first one-way throttle valve disposed on the first conduit 31. The first check throttle valve includes a first throttle valve 361 and a first check valve 362. The first check valve 362 includes a first valve spool and a first valve body. The first spool is in communication with a source of media 39. Wherein when the piston 30 needs to be depressed, the first chamber 34 of the cylinder needs to be driven with a medium flowing in. The medium source 39 now delivers a medium flow to the first line 31, which flows through the first non return valve 362 and the first throttle 361. Wherein the flow of medium to the first check valve 362 pushes the first spool against the first valve body, thereby closing the passage of the first check valve 362 and prohibiting the flow of medium therethrough. At this time, the medium flow can only flow from the first throttle valve 361 to the first chamber 34. The first throttle valve 361 can reduce the inflow amount and the inflow speed of the medium flow, and prevent the pressure inside the first cavity 34 from being too high due to the fact that the piston 30 cannot be pressed down in time because the speed is too high or the inflow amount is too large when the medium flow flows into the first cavity 34. When the piston 30 needs to be raised, the first chamber 34 of the actuating cylinder needs to be filled with a medium. When the medium flows out, it flows through the first throttle 361 and the first check valve 362, and the medium pushes the first valve element open, ensuring that the medium can flow normally. Therefore, the medium in the first cavity 34 can be discharged quickly, and the situation that the medium in the first cavity 34 cannot be discharged in time when the piston 30 rises and the pressure is too high due to medium accumulation is avoided.

In one embodiment, the drive cylinder control assembly further includes a second one-way throttle valve disposed on the second conduit 32. The second check throttle valve includes a second throttle valve 371 and a second check valve 372. The second check valve 372 includes a second valve element and a second valve body. The second spool is in communication with a source of media 39. When the piston 30 needs to be raised, medium flows into the second chamber 35 of the cylinder. The medium source 39 now delivers a medium flow to the second line 32, which flows through the second non return valve 372 and the second throttle 371. Wherein the flow of medium to second one-way valve 372 pushes the second spool against the second valve body, thereby closing the passage of second one-way valve 372 and prohibiting the flow of medium through. At this point, the medium flow can only pass from the second throttle 371 to the second chamber 35. The second throttle valve 371 can reduce the inflow amount and inflow speed of the medium flow, so as to prevent the medium flow from flowing into the second chamber 35 at too high speed or too much inflow amount, the piston 30 cannot be pressed up in time, and the pressure in the second chamber 35 is too high. When the piston 30 needs to be depressed, the second chamber 35 of the actuating cylinder needs to be filled with a medium. When the medium flows out, it flows through the second throttle 371 and the second check valve 372, and the medium pushes the second spool open, ensuring that the medium can flow normally. Therefore, the medium in the second chamber 35 can be discharged quickly, and the situation that the medium is accumulated to cause overlarge pressure intensity due to the fact that the medium in the second chamber 35 cannot be discharged in time when the piston 30 is pressed down is avoided.

In one embodiment, the drive cylinder assembly further includes a two-position, five-way solenoid valve 38. The two-position five-way solenoid valve 38 communicates with the first line 31, the second line 32 and the medium source 39, respectively. The two-position five-way solenoid valve 38 is an automated basic element for controlling fluid, belongs to an actuator, and is not limited to hydraulic pressure and pneumatic pressure. The solenoid valve is used for controlling the fluid flow direction, a closed cavity is arranged in the solenoid valve, through holes are formed in different positions, each hole leads to different pipelines, a valve is arranged in the middle of each cavity, two electromagnets are arranged on two sides, the magnet coil electrified valve body on the corresponding side can be attracted to the corresponding side, different through holes are blocked or leaked through the movement of the control valve body, the fluid inlet hole is normally opened, fluid can enter different pipelines, then the piston of the driving cylinder is pushed through the pressure of the fluid, the piston drives the piston rod, the piston rod drives the mechanical device to move, and therefore mechanical movement is controlled.

In summary, when the piston 30 needs to be pressed down, please refer to fig. 6, and fig. 6 is a schematic diagram illustrating the operation principle of the driving cylinder control assembly according to an embodiment of the present application. The medium source 39 inputs medium to the first cavity 34 through the two-position five-way electromagnetic valve 38, drives the piston 30 to move downwards, the medium in the second cavity 35 is discharged through the second pipeline 32 under pressure, when the medium flow passes through the external control one-way valve 33, the external control valve core of the external control one-way valve 33 can be pushed to be opened by the medium flow in the first pipeline 31, and at the moment, the medium flow in the second pipeline 32 can reversely flow, namely, the medium flow from the second cavity 35 passes through the external control one-way valve 33; the medium in the second chamber 35 can thus flow out normally when the piston is pressed down.

When the piston 30 needs to move upward, please refer to fig. 7, fig. 7 is a schematic diagram of the working principle of the driving cylinder control assembly according to another embodiment of the present application. The medium source 39 inputs medium into the second chamber 35 through the two-position five-way solenoid valve 38, drives the piston 30 to move upwards, and the medium in the first chamber 34 is pressed to flow out through the first pipeline 31.

Referring to fig. 8, when the medium source 39 is interrupted, fig. 8 is a schematic diagram illustrating the operation of the control assembly of the driving cylinder according to another embodiment of the present application. The piston 30 is driven to move downwards by the driven object connected with the lower end of the piston 30 under the action of gravity, the medium in the second cavity 35 is pressed to flow out through the second pipeline 32, when the medium flows through the external control one-way valve 33, the medium source 39 is interrupted, no medium flows pass through the first pipeline 31, the external control valve core of the external control one-way valve 33 cannot be pushed, the external control one-way valve 33 cannot be opened, at the moment, the medium flows in the second pipeline 32 cannot reversely flow, namely, the medium in the second cavity 35 cannot be smoothly discharged, rebound pressure is generated, the piston 30 is driven to move upwards, and the piston 30 cannot move downwards. That is, the piston 30 is not influenced by the weight of the driven object, or the driven object does not fall off.

Through the above embodiment, it can be realized that when the medium source 39 in the cylinder control assembly is abnormal and cannot normally supply medium flow to the pipeline, the medium in the second chamber 35 cannot be discharged outwards through the external control one-way valve 33, so that the piston 30 cannot fall down, the stability of the device is maintained, and the safety is improved.

The application also provides a press, please refer to fig. 9, and fig. 9 is a schematic structural diagram of a press according to another embodiment of the application. The press may be used to press ceramic dielectric filter blanks. Specifically, after the ceramic powder to be formed is loaded into the accommodating cavity formed by the female die 13 and the second punch 122, the driving cylinder control assembly is started. The medium source 39 feeds medium into the first chamber 34 of the drive cylinder, the piston starts to press down and the second chamber 35 discharges medium outwards. The piston is pressed down to drive the connecting component connected with the piston to be pressed down, and a pressure sensor 24 in the connecting component monitors the pressure in the pressing process of the press machine. The connecting assembly pushes down to drive the first die plate 111 to push down, before the first punch 121 enters the accommodating cavity, the nitrogen spring 14 is firstly contacted with the pressure rod 15, and the pressure rod 15 moves up and down under the action of the nitrogen spring 14 and the floating cylinder 162, so that the position of the second punch 122 can be adjusted through the second die plate 112, the height of a pressed product is adjusted, and the powder to be formed is more uniform. And then the first punch 121 enters the containing cavity to press and form the powder to be formed. And then the medium source 39 conveys the medium into the second cavity 35 of the driving cylinder, the piston moves upwards, so that the first punch 121 is driven to move out of the accommodating cavity, and the female die 13 moves downwards to complete product demoulding.

In summary, according to the above embodiments, when the medium source in the driving cylinder control assembly is abnormal and cannot normally provide medium flow to the pipeline, the medium in the second cavity cannot be discharged outwards through the external control one-way valve, so that the piston cannot fall down, the stability of the device is maintained, and the safety is improved; after the pressure sensor and the main body part are integrally arranged, the pressure sensor can directly monitor the pressure of the press machine during working, the pressure is not required to be monitored through the cooperation of a hydraulic cylinder, oil, a piston and other parts, the structure of the equipment can be simplified, the situations such as oil leakage and the like are avoided, and the phenomenon that the height of a pressed product is unstable due to the retraction of the piston caused by the oil leakage is also avoided; in addition, through set up an elastic component on first template, can adjust the object of treating of holding intracavity in the pushing down process of press, promote the uniformity of holding intracavity powder density, make it more even and compact, and then promote subsequent suppression effect.

The above description is only for the purpose of illustrating embodiments of the present application and is not intended to limit the scope of the present application, and all modifications of equivalent structures and equivalent processes, which are made by the contents of the specification and the drawings of the present application or are directly or indirectly applied to other related technical fields, are also included in the scope of the present application.

Claims (10)

1. A press machine, characterized by comprising:

the die carrier structure comprises a first die plate and a second die plate which are oppositely arranged;

the punch assembly comprises a first punch and a second punch which are oppositely arranged, the first punch and the second punch are used for punch forming of a to-be-formed object, the first punch is connected with the first template, and the second punch is connected with the second template;

the female die comprises at least one through hole, and the through hole is matched with the second punch to form an accommodating cavity so as to accommodate the object to be molded;

the elastic piece is connected with the first template, is opposite to the second template and is arranged at intervals, and can generate acting force on the second template under the driving of the first template so as to adjust the position of the second punch.

2. Press according to claim 1,

the elastic member includes a nitrogen spring.

3. Press according to claim 2, characterized in that it further comprises:

and the pressure rod is connected with the second template, is opposite to the elastic piece and is arranged at intervals, and the pressure rod and the elastic piece are coaxially arranged.

4. Press according to claim 3,

the distance between the elastic piece and the pressure rod is smaller than the distance between the first punch and the surface of the female die.

5. Press according to claim 3,

the pressure bar includes the telescopic link to can adjust the length of pressure bar, and then the adjustment the pressure bar with interval between the elastic component.

6. Press according to claim 1,

the number of the elastic parts is at least two, and the two elastic parts are distributed in an axisymmetric mode.

7. Press according to claim 1, characterized in that it further comprises:

the regulating and controlling assembly is opposite to the second template and is arranged at intervals;

the regulating assembly comprises a driving member and a stop member; the driving piece is used for driving and adjusting the position of the second template, and the stop piece is used for limiting the position boundary of the second template.

8. Press according to claim 1, characterized in that it further comprises:

a connecting assembly connected to the first die plate for connecting the first die plate to a pressure source to provide a force to the first punch.

9. Press according to claim 8,

coupling assembling includes main part spare, first connecting piece, second connecting piece and pressure sensor, the main part spare is connected first connecting piece with the second connecting piece, first connecting piece is used for connecting the pressure source of press, the second connecting piece with first connecting piece sets up relatively, the second connecting piece with first template is connected, pressure sensor with the coaxial setting of main part spare.

10. Press as claimed in claim 9, characterized in that it further comprises:

the driving cylinder is connected with the first connecting piece;

the driving cylinder control assembly comprises a first pipeline, a second pipeline and a regulating valve, the first pipeline is used for communicating a medium source with a first cavity of the driving cylinder, the second pipeline is used for communicating the medium source with a second cavity of the driving cylinder, and the regulating valve is arranged on the second pipeline and communicated with the first pipeline, so that medium flow in the first pipeline can control the regulating valve.

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