CN111390034A

CN111390034A - Lower die mechanism of clamp piston punch press and lubricating method thereof

Info

Publication number: CN111390034A
Application number: CN202010211183.7A
Authority: CN
Inventors: 潘松辉; 潘菁
Original assignee: Dachang Auto Parts Suzhou Co ltd
Current assignee: Dachang Auto Parts Suzhou Co ltd
Priority date: 2020-03-20
Filing date: 2020-03-20
Publication date: 2020-07-10
Anticipated expiration: 2040-03-20
Also published as: CN112404273A; CN111390034B; CN112404273B; CN112387876A; CN112387876B

Abstract

The invention relates to a lower die mechanism of a caliper piston punch press and a lubricating method thereof, which comprises a lower die seat provided with a plurality of stations and is characterized in that: the lubricating device comprises a moving assembly, a sliding rail assembly, a driving assembly and a lubricating system, wherein the moving assembly is used for clamping a workpiece and driving the workpiece to move at each station in sequence; the lubrication is characterized in that: not only lubricated removal subassembly, slide rail set spare and the drive assembly that can be comprehensive can also dispel the heat to the three at lubricated process, improves the stability of equipment operation from this, avoids its high load work, improves life.

Description

Lower die mechanism of clamp piston punch press and lubricating method thereof

Technical Field

The invention relates to the technical field of automobile accessory processing, in particular to a lower die mechanism of a caliper piston punch press and a lubricating method thereof.

Background

A brake caliper, which is one of the core components of a brake system (or brake), is widely used in vehicles, and mainly generates a restraining force (i.e., a braking force) through the interaction between the brake caliper and a brake disc; the existing brake calipers generally comprise pistons (sometimes called caliper pistons) and brake pads, because the caliper pistons are tightly matched with oil cylinders arranged in a matched mode, in order to prevent brake fluid from leaking when the caliper pistons move, the manufacturing requirement on the caliper pistons is very high, the caliper pistons are inevitably required to have higher precision and wear resistance, and the existing caliper pistons are very weak in manufacturing means, so that the following unpredicted points still exist:

first, at present, the device for manufacturing the caliper piston is mainly a punch (or a lathe), that is: the existing punching machine generally comprises an upper die body, a lower die body, a sliding rail (sometimes called a guide rail) and a moving mechanism, wherein the lower die body, the sliding rail and the moving mechanism can be called as a lower die mechanism; in the process of manufacturing the caliper piston, as the moving mechanism and the slide rail need to move repeatedly relative to each other, a large amount of heat is generated, the existing means cannot drive the heat to be dissipated, the slide rail is easy to deform, the matching effect between the slide rail and the moving mechanism is influenced, and under the serious condition, the moving mechanism even breaks away from the slide rail, so that safety accidents are caused;

secondly, when the driving part of the moving mechanism works under high load for a long time, the heat generated by the driving part of the moving mechanism cannot be effectively dissipated, so that the service life of the driving part of the moving mechanism can be influenced;

thirdly, when the heat between the sliding rail and the moving mechanism is gradually increased, the lubricating oil between the sliding rail and the moving mechanism is affected to a certain degree (for example, the lubricating oil is reduced), so that the smoothness of the movement of the moving mechanism on the sliding rail is affected, the processing quality of workpieces is also affected, the sliding rail and the moving mechanism can be scrapped seriously, and the prior art cannot realize the comprehensive lubrication of the sliding rail.

Disclosure of Invention

Aiming at the defects in the prior art, the invention aims to provide a lower die mechanism of a caliper piston punch and a lubricating method thereof, and aims to solve the problems in the background technology.

The technical scheme of the invention is realized as follows: the utility model provides a lower die mechanism of pincers piston punch press, is including the die holder that is equipped with a plurality of station, its characterized in that: the lubricating device comprises a moving assembly, a sliding rail assembly, a driving assembly and a lubricating system, wherein the moving assembly is used for clamping a workpiece and driving the workpiece to move at each station in sequence, the sliding rail assembly is matched with the moving assembly and used for the sliding of the moving assembly, the driving assembly is used for controlling the moving assembly to move on the sliding rail assembly, and the lubricating system is used for lubricating the moving assembly, the sliding rail assembly and the driving assembly at the same time.

Preferably: the sliding rail assembly comprises a sliding rail and a heat dissipation block attached to the sliding rail; the moving assembly comprises moving bodies, at least one air cylinder and clamping claws, the moving bodies are provided with sliding grooves matched with the sliding rails, the air cylinders are arranged on one sides, close to the stations, of the moving bodies, and the clamping claws are mounted at the output ends of the air cylinders and used for clamping workpieces.

Preferably: the movable body is composed of a top plate, a first side plate, a second side plate and a partition plate, wherein the top plate, the first side plate, the second side plate and the partition plate are arranged on the periphery of the movable body, and a sliding groove matched with the sliding rail is formed among the partition plate, the first side plate and the second side plate.

Preferably: a plurality of lubricating and cooling cavities which are contacted with the outer wall of the sliding rail and communicated with the output end of the lubricating system are arranged in the moving body; the lubricating cooling cavity comprises a lubricating branch formed between the partition plate and the first side plate or between the partition plate and the second side plate, a lubricating main path formed between the partition plate and the top plate, an outer annular groove formed between adjacent partition plates and an inner annular groove formed in the partition plate; the outer annular groove and the inner annular groove are respectively communicated with a lubricating main circuit and/or a lubricating branch circuit, and the lubricating main circuit is communicated with the lubricating branch circuit; the output ends of the outer annular groove, the inner annular groove and the lubricating branch are all in contact with the slide rail, and the output ends of the outer annular groove, the inner annular groove and the lubricating branch form a lubricating groove.

Preferably: the sliding rail comprises a sliding rail body, and a top lug and a bottom lug which are integrally formed with the sliding rail body, distributed on two sides of the sliding rail body and longitudinally distributed in a staggered manner; the heat dissipation block is tightly attached to the bottom side of the sliding rail body, which is provided with the top bump, the heat dissipation block and the clamping claw are arranged on the same side of the sliding rail, and the heat dissipation block is matched with the moving body through lubricating oil.

Preferably: the driving assembly comprises at least one driving motor arranged on the sliding rail, a lead screw controlled by the driving motor and a connecting seat connected between the movable part of the lead screw and the moving body; the driving motor is embedded in the sliding rail, and the lead screw corresponds to the matching gap between the moving body and the sliding rail.

Preferably: the lubricating system comprises at least one oil supply nozzle communicated with the main lubricating path and an oil supply pump used for conveying lubricating oil to each oil supply nozzle; the oil supply nozzles are divided into a first oil supply nozzle communicated with the middle of the main lubricating path and second oil supply nozzles communicated with two ends of the main lubricating path, and the second oil supply nozzles are respectively in one-to-one correspondence with the inner annular grooves; the lubricating system also comprises an oil control device for controlling the oil supply pump to deliver lubricating oil to the first oil supply nozzle and the second oil supply nozzle; the oil control device comprises a valve body with a first cavity and a second cavity, a first oil outlet and a second oil outlet which are arranged on the valve body and communicated with the first cavity or the second cavity, and a first oil inlet and a second oil inlet which are arranged on the valve body and communicated with the first cavity, wherein a third oil inlet is arranged between the first cavity and the second cavity, the first oil inlet and the second oil inlet are respectively communicated with the output end of the oil supply pump through a main oil pipe and an oil distribution pipe, and the oil distribution pipe is provided with a flow limiting valve; the first oil inlet, the first cavity and the first oil outlet form a first oil supply branch for supplying oil to the first oil supply nozzle; and valve cores which are driven by the electromagnetic assemblies and are respectively used for opening or closing the first oil supply branch and the second oil supply branch are arranged in the first cavity and the second cavity.

Preferably: the valve core comprises a first valve core arranged in the first cavity and a second valve core arranged in the second cavity, a first spring fixedly connected with the inner wall of the first cavity is arranged at one end, far away from the first oil outlet, of the first valve core, and a second spring fixedly connected with the inner wall of the second cavity is arranged at one end, far away from the third oil inlet, of the second valve core; the electromagnetic assembly is an electromagnetic coil wound on the valve body and used for controlling the second valve core; the caliber of the first oil inlet is larger than that of the second oil inlet.

In addition, the invention also provides a lubricating method for lubricating the lower die mechanism of the caliper piston punch press, which is characterized by comprising the following steps:

s1, oil distribution of each oil supply nozzle: the oil supply pump sends the lubricating oil into the oil control device, distributes the lubricating oil through the oil control device, and respectively conveys the lubricating oil to the first oil supply nozzle and the second oil supply nozzle through the first oil supply branch and the second oil supply branch;

the first oil supply branch of S2 supplies oil firstly: when the electromagnetic coil is electrified, the second valve core compresses the second spring through the attraction of the electromagnetic coil, at the moment, the third oil inlet is opened, the first oil supply branch is opened, oil is synchronously supplied to the two sides of the moving body through the second oil supply nozzle, and the moving body is uniformly lifted by a small height by utilizing lubricating oil entering from the two ends of the moving body;

and S3 oil is supplied after the second oil supply branch: through the action of the flow limiting valve and the difference between the caliber of the first oil inlet and the caliber of the second oil inlet, the spring cavity of the first spring is decompressed, the first valve core extrudes the first spring, the first oil outlet nozzle is opened, and at the moment, the second oil supply branch is opened and supplies oil to the middle part of the moving body through the first oil supply nozzle;

s4 full oil supply of the lubrication cooling cavity: when the second oil supply branch in the step S3 is opened, the first oil supply branch and the second oil supply branch supply oil to the lubricating and cooling cavity at the same time;

s5 moving assembly cooling: lubricating oil in the lubricating and cooling cavity respectively enters the lubricating main path, the lubricating branch path and the inner annular groove and the outer annular groove to lubricate and cool the moving body;

s6 cooling the slide rail assembly: lubricating oil enters each lubricating groove and contacts with the sliding rail to complete the lubrication and cooling of the sliding rail;

s7 drive assembly cooling: the lubricating oil in the S6 flows out from the fit clearance between the moving body and the sliding rail, and partially flows onto the driving motor and the lead screw to finish cooling the driving assembly;

s8 lubricant discharge: and the lubricating oil is sequentially cooled by the moving assembly, the sliding rail assembly and the driving assembly, and then is discharged after being guided by the bottom bump or/and the heat dissipation block.

Preferably: the method also comprises the closing step of the first oil supply branch and the second oil supply branch; wherein the closing step is: after the lubrication process is completed, the electromagnetic coil is powered off, the second valve core is controlled to reset by the second spring after the second valve core loses the magnetic influence of the electromagnetic coil on the second valve core, at the moment, the third oil inlet is closed, the plurality of first oil supply branches are closed by the pilot valve, the purpose of saving lubricating oil is achieved, then, the spring cavity of the first spring is pressurized, the first valve core is controlled to reset by matching with the first spring, at the moment, the first oil inlet is closed, and the second oil supply branch is closed.

The invention has the beneficial effects that:

firstly, a lubricating system is adopted to lubricate matching surfaces of the sliding rail and the moving assembly and the driving assembly, and the running stability of the sliding rail, the moving assembly and the driving assembly is ensured, so that the moving accuracy of a workpiece is ensured, and the processing quality of the workpiece is improved;

secondly, the heat between the sliding rail and the moving assembly can be effectively eliminated by adopting the matching of the lubricating system and the heat dissipation block, the device is prevented from being damaged (for example, the sliding rail is deformed due to the heat) caused by overhigh temperature, and meanwhile, the running stability between the sliding rail and the moving assembly can be ensured, so that the processing quality of workpieces is ensured; moreover, the heat dissipation block is attached to the bottom side wall of the sliding rail, and the top surface of the heat dissipation block is matched with the second side plate through lubricating oil, so that the heat of the sliding rail can be quickly discharged through the heat dissipation block (and the lubricating oil), and the guide rail is prevented from deforming; more importantly: the heat dissipation block can be used for assisting in supporting the second side plate, so that the gravity center of the moving body is prevented from deviating from the slide rail due to the weight of the air cylinder, the stability of operation between the moving body and the slide rail is reduced, and abnormal abrasion is reduced;

thirdly, in the process of lubrication, the existing method is to add lubricating oil (or lubricant) at a certain position, and the adding of lubricating oil at a certain position can destroy the balance between the sliding rail and the moving component (for example, the moving component inclines), and the influence of the length of the sliding rail (and the moving component) can aggravate the phenomenon, but the oiling of the invention can add lubricating oil from multiple positions in a balanced manner (namely, the oil is added to the side of the moving body through the second oil supply nozzle, then the oil is added to the middle of the moving body through the first oil supply nozzle, and finally, the oil is completely supplied), when the second oil supply nozzle synchronously oils to each side of the moving body, the moving component can be uniformly lifted by a tiny height from the side, so that the smooth operation and balance of the moving component are ensured, and the abnormal abrasion of the sliding rail and the moving component is avoided, the service life of the two parts can be ensured, the precision of the moving workpiece can be improved, and the processing quality of the workpiece can be ensured; moreover, the invention can close a plurality of first oil supply branches at present and then control the second oil supply branch supplying oil to the middle part of the movable body to be closed, thereby not only achieving the purpose of saving oil, but also avoiding uneven oil cut of multiple sides when cutting off an oil supply line, thereby causing abnormal matching between the movable body and the slide rail;

fourthly, the driving assembly can be cooled by lubricating oil, namely: because the driving assembly can generate certain heat after long-time work (the long-time high heat can influence the stable operation of the driving assembly), the lubricating oil disclosed by the invention can flow out of a fit clearance between the sliding rail and the moving assembly after cooling the sliding rail and cool the driving assembly, so that the long-time operation stability of the driving assembly is ensured, and the processing quality and the processing efficiency of a workpiece are further ensured; moreover, the motor is installed to one side of the sliding rail body in an embedded mode, so that the installation space can be saved, the motor can be in contact with the sliding rail body, the heat of the motor can be transferred to the sliding rail, and further transferred to the heat dissipation block through the sliding rail, and heat dissipation is completed; in addition, the matching clearance between the screw rod and the movable body corresponds to the matching clearance between the slide rail, and the purpose of the invention is as follows: because lubricating oil can flow out from the fit clearance of removing body and slide rail, it can directly flow to lubricate and cool off the lead screw on the lead screw to, this application adopts another advantage of the mode of lead screw to lie in: when the movable part on the lead screw moves axially on the lead screw, the movable part can play a role of 'smearing oil', namely: can reciprocate to scribble the lubricating oil that flows on the lead screw to guarantee the effect that lubricating oil was scribbled and lubricating and the cooling effect of lubricating oil to the lead screw, and then further guarantee the efficiency that movable part moved about on the lead screw, improve the removal efficiency of removing the body, thereby improve the machining efficiency of work piece.

Drawings

In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to these drawings without creative efforts.

FIG. 1 is a schematic structural diagram of embodiment 1 of the present invention;

FIG. 2 is a cross-sectional view A-A of FIG. 1;

FIG. 3 is an enlarged view of portion B of FIG. 2;

FIG. 4 is a cross-sectional view taken along line B-B of FIG. 2;

FIG. 5 is a schematic view of the closing of an oil control device in accordance with embodiment 2 of the present invention;

fig. 6 is a schematic view illustrating the opening of a first oil supply branch of an oil control device in embodiment 2 of the present invention;

FIG. 7 is a schematic view of a central oil control device of embodiment 2 of the present invention fully opened;

fig. 8 is a schematic structural diagram of embodiment 3 of the present invention.

Detailed Description

The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.

Example 1

As shown in fig. 1-4, the invention discloses a lower die mechanism of a caliper piston punch press, which comprises a lower die holder 10 provided with a plurality of stations, and is characterized in that: the device comprises a moving assembly 2, a sliding rail assembly 3, a driving assembly 6 and a lubricating system 4, wherein the moving assembly 2 is used for clamping workpieces and driving the workpieces to move at each station in sequence, the sliding rail assembly 3 is matched with the moving assembly 2 and used for sliding the moving assembly 2, the driving assembly 6 is used for controlling the moving assembly 2 to move on the sliding rail assembly 3, and the lubricating system lubricates the moving assembly 2, the sliding rail assembly 3 and the driving assembly 6 at the same time.

In an embodiment of the present invention, the lubrication system 4 can lubricate the moving assembly 2, the sliding rail assembly 3, and the driving assembly 6.

In an embodiment of the present invention, the stations include a first station 1001, a second station 1002, and a third station 1003.

In the embodiment of the present invention, the slide rail assembly 3 includes a slide rail 30 and a heat dissipation block 31 attached to the slide rail 30; the moving assembly 2 comprises moving bodies 21 provided with sliding grooves 20 matched with the sliding rails 3, at least one air cylinder 22 arranged on one side of each moving body 21 close to the station, and clamping claws 23 arranged at the output ends of the air cylinders 22 and used for clamping workpieces.

In the embodiment of the present invention, the moving body 21 is composed of a top plate 210, a first side plate 211, a second side plate 212 and a partition plate 213 disposed inside the top plate, the first side plate 211 and the second side plate 212, and a sliding slot 20 adapted to the sliding rail 3 is formed between the partition plate 213, the first side plate 211 and the second side plate 212.

In the embodiment of the present invention, a plurality of lubricating and cooling cavities 210 contacting with the outer wall of the sliding rail and communicating with the output end of the lubricating system 4 are arranged in the moving body 21; wherein said lubricating cooling cavity 210 comprises a lubricating branch 2100 formed between said divider plate 213 and first side plate 211 or between divider plate 213 and second side plate 212, a main lubricating path 2101 formed between said divider plate 213 and top plate 210, an outer annular groove 2102 formed between adjacent divider plates 213, and an inner annular groove 2103 provided on divider plate 213; wherein, the outer annular groove 2102 and the inner annular groove 2103 are respectively communicated with the main lubricating path 2101 and/or the branch lubricating path 2100, and the main lubricating path 2101 is communicated with the branch lubricating path 2100; the output ends of the outer annular groove 2102, the inner annular groove 2103 and the lubricating branch 2100 are all in contact with the slide rail 30, and the output ends of the three all form a lubricating groove 210 a.

In the embodiment of the present invention, the slide rail 30 includes a slide rail body 300, and a top bump 303 and a bottom bump 302 integrally formed with the slide rail body 300 and distributed on two sides of the slide rail body 300 and longitudinally distributed in a staggered manner; the heat dissipation block 31 is closely attached to the bottom side 300a of the slide rail body 300, which is provided with the top protrusion 303, the heat dissipation block 31 and the clamping claw 23 are arranged on the same side of the slide rail 30, and the heat dissipation block 31 is matched with the movable body 21 through lubricating oil.

In the embodiment of the present invention, the driving assembly 6 includes at least one driving motor 60 installed on the sliding rail body 300, a lead screw 61 controlled by the driving motor 60, and a connecting seat 62 connected between the movable portion of the lead screw 61 and the moving body 21; the driving motor 60 is embedded in the slide rail body 300, and the lead screw 61 corresponds to the fit clearance between the moving body 21 and the slide rail body 300. .

In an embodiment of the present invention, the slide rail body 300 may be provided with a receiving groove 3000 for mounting the driving assembly 6.

In an embodiment of the present invention, the screw 61 may be a ball screw and a nut movably disposed on the ball screw, and the connecting seat 62 is connected to the nut.

In an embodiment of the present invention, the lubrication system 4 includes at least one oil supply nozzle 40 communicating with the main lubrication path 2101 and an oil supply pump 41 for supplying lubricating oil to each oil supply nozzle 40.

By adopting the technical scheme:

referring to fig. 1-4, the working principle of the present embodiment is: the clamping claws arranged on two sides of the lower die holder can be used for clamping workpieces, when the driving motor controls the ball screw to rotate, the nut on the ball screw can move on the ball screw to drive the connecting seat to move, so that the moving body is driven to move on the sliding rail, the workpieces are driven to move from a first station to a third station, and the workpieces are processed between the first station and the third station;

in the embodiment, the lubricating oil can be introduced into the lubricating and cooling cavity through the oil supply nozzle, referring to fig. 3, fig. 3 is a schematic flow diagram of the lubricating oil in the lubricating and cooling cavity; firstly, lubricating oil enters a main lubricating path through an oil supply nozzle, and sequentially flows to a lubricating branch circuit and an outer annular groove to a lubricating groove, during the period, the lubricating oil lubricates and dissipates heat inside a moving body (namely, a lubricating cooling cavity), and then when the lubricating oil enters the lubricating groove, the lubricating oil is in contact with a sliding rail so as to lubricate and dissipate heat of the sliding rail, referring to fig. 2-3, the sliding rail of the embodiment consists of a sliding rail body, a top lug and a bottom lug, and the top lug and the sliding rail body are used for being in contact with the moving body, so that the contact area of the lubricating oil and the sliding rail can be increased during lubrication, and the cooling effect is further improved;

it should be noted that: referring to fig. 2, in the present embodiment, the heat dissipation block is attached to the bottom side wall of the slide rail, the top surface of the heat dissipation block is matched with the second side plate through the lubricating oil, so that the heat of the slide rail can be quickly discharged through the heat dissipation block (and the lubricating oil), thereby preventing the deformation of the guide rail, while in the present embodiment, the lateral direction of the heat dissipation block is longer than that of the second side plate, which is beneficial for disassembly and maintenance, and the heat dissipation block can assist in supporting the second side plate, thereby preventing the weight of the cylinder from deviating the gravity center of the moving body from the slide rail, thereby reducing the stability of the operation between the moving;

more importantly: referring to fig. 2, the heat dissipation block provided in this embodiment can not only achieve the heat dissipation effect, but also play a supporting role, that is: because the slide rail of the embodiment is not in an axisymmetric structure (because the top lug and the bottom lug are arranged on the slide rail body, the top lug can improve the matching area of the slide rail and the movable body and ensure the moving stability of the movable body), and because the cylinder is arranged on one side of the guide rail, the gravity center of the movable body can not be on the slide rail, and in order to avoid abnormal abrasion between the movable body and the slide rail, the heat dissipation block is arranged on one side of the movable body with the cylinder, so that the effect of supporting the movable body is achieved, and the heat dissipation block is contacted with the movable body, therefore, the heat dissipation of the slide rail can be realized, and the heat dissipation of the movable body can also be realized;

in addition, the top plate, the first side plate and the second side plate can be firstly fastened into a whole, and then the lubricating main road and the branch road are machined by drilling, so that the machining of the movable body can be facilitated, and the precision of the movable body can be improved;

furthermore, the drive assembly of the present embodiment also participates in the lubrication process, namely: when lubricating oil flows out from the fit clearance of removal body and slide rail, it can flow to lead screw and driving motor to dispel the heat to lead screw and driving motor, and then reduce drive assembly's "self-heating", guarantee the stability of drive assembly operation.

Example 2 is different from the above-described examples in that

As shown in fig. 5 to 7, in the embodiment of the present invention, the oil supply nozzle 40 is divided into a first oil supply nozzle 401 communicating with the middle of the main lubrication path 2101 and second oil supply nozzles 402 communicating with both ends of the main lubrication path 2101, and each of the second oil supply nozzles 402 corresponds to each of the inner annular grooves 2103 one-to-one; wherein, the lubricating system 4 further comprises an oil control device for controlling the oil supply pump 41 to supply lubricating oil to each of the first oil supply nozzle 401 and the second oil supply nozzle 402; the oil control device comprises a valve body 420 with a first chamber 421 and a second chamber 422, a first oil outlet 4201a and a second oil outlet 4202a which are arranged on the valve body 420 and communicated with the first chamber 421 or the second chamber 422, a first oil inlet 4201b and a second oil inlet 4202b which are arranged on the valve body 420 and communicated with the first chamber 421, a third oil inlet 4203b is arranged between the first chamber 421 and the second chamber 422, the first oil inlet 4201b and the second oil inlet 4202b are respectively communicated with the output end of the oil supply pump 41 through a main oil pipe 423 and an oil distribution pipe 424, and a flow limiting valve 425 is arranged on the oil distribution pipe 424; the second oil inlet 4202b, the first chamber 421, the third oil inlet 4203b, the second chamber 422 and the second oil outlet 4202a form a first oil supply branch for supplying oil to the second oil supply nozzle 402, and the first oil inlet 4201b, the first chamber 421 and the first oil outlet 4201a form a second oil supply branch for supplying oil to the first oil supply nozzle 401; the first chamber 421 and the second chamber 422 are provided therein with valve spools 50 driven by the solenoid assembly 5 and respectively used for opening or closing the first oil supply branch and the second oil supply branch.

In a specific embodiment of the present invention, the valve spool 50 includes a first valve spool 501 disposed in the first chamber 421 and a second valve spool 502 disposed in the second chamber 422, a first spring 5011 fixedly connected to an inner wall of the first chamber 421 is disposed at an end of the first valve spool 501 away from the first oil outlet 4201a, and a second spring 5022 fixedly connected to an inner wall of the second chamber 422 is disposed at an end of the second valve spool 502 away from the third oil inlet 4203 b; the electromagnetic assembly 5 is an electromagnetic coil wound on the valve body 420 for controlling the second spool 502; the caliber of the first oil inlet 4201b is larger than that of the second oil inlet 4202 b.

In addition, this embodiment further provides a lubrication method, which in an embodiment of the present invention, includes the following steps:

In the specific embodiment of the invention, the method further comprises the step of closing the first oil supply branch and the second oil supply branch; wherein the closing step is: after the lubrication process is completed, the electromagnetic coil is powered off, the second valve core is controlled to reset by the second spring after the second valve core loses the magnetic influence of the electromagnetic coil on the second valve core, at the moment, the third oil inlet is closed, the plurality of first oil supply branches are closed by the pilot valve, the purpose of saving lubricating oil is achieved, then, the spring cavity of the first spring is pressurized, the first valve core is controlled to reset by matching with the first spring, at the moment, the first oil inlet is closed, and the second oil supply branch is closed.

By adopting the technical scheme:

the oil control device of the embodiment can provide a first oil supply branch and a second oil supply branch;

the first oil supply branch, namely: the lubricating oil enters the second oil inlet, passes through the first cavity, the third oil inlet and the second cavity and is finally discharged through the second oil outlet;

the second oil supply branch, namely: the lubricating oil enters the first oil inlet, passes through the first cavity and is finally discharged from the first oil outlet;

the principle of this embodiment oil control device is: first oil supply branch is opened earlier, and lubricating oil flows to the second oil feed mouth via first oil supply branch, and subsequently, second oil supply branch is opened, and lubricating oil flows to first oil feed mouth by second oil supply branch, and what need explain is: when the second oil supply branch is opened or after the second oil supply branch is opened, the first oil supply branch is always opened;

in more detail: the oil control device can realize that oil is firstly added from two ends of a lubricating main path (namely, a movable assembly) and then added to the middle part of the lubricating main path, the second oil supply nozzles correspond to the inner annular grooves one by one, and the oil supply sequence aims to: can enable the moving component to be uniformly lifted to a tiny height, namely: the small gap can be generated between the sliding rail and the moving body, so that the moving of the moving body is facilitated, lubricating oil can be ensured to flow smoothly in the gap between the sliding rail and the moving body, the lubricating effect and efficiency are ensured, the moving assembly can move more smoothly, and abnormal abrasion between the sliding rail and the moving body can be avoided;

of note are: the closing sequence of the oil control device is that the first oil supply branch is closed, and the second oil supply branch is closed again, and the purpose is as follows: when the operation of the embodiment is stopped, the branch for supplying oil to the two sides is closed firstly, so that lubricating oil can be saved; moreover, when the first oil supply branch is closed, the first cavity (namely the space section between the second oil inlet and the third oil inlet) is filled with lubricating oil, and the first cavity is pressurized at the moment to assist the first valve core to reset, so that the accurate oil supply of the oil control device is ensured;

mention may be made of:

firstly, the flow limiting valve can perform a flow limiting effect on the second oil inlet, and further pull open the oil inlet amount between the first oil inlet and the second oil inlet to assist the normal use of the first valve core and the second valve core (namely, the first oil inlet and the second oil inlet are both supplied with oil through an oil pump, so that the oil pressures of the first oil inlet and the second oil inlet are equal, but the cross sectional areas of the first oil inlet and the second oil inlet are different, and further assist of the flow limiting valve is added, once the third oil inlet is opened, one side of the first cavity close to the third oil inlet starts to release pressure, so that the second valve core can be driven to push the second spring, and further assist the second valve core to;

secondly, if the temperature of the slide rail is abnormal in the operation process, the flow limiting valve can be opened to a larger opening degree, meanwhile, the first oil outlet is also ensured to be opened, and at the moment, more lubricating oil can be supplied to the lubricating and cooling cavity for auxiliary cooling.

And thirdly, after the second oil supply branch is opened, the first oil supply branch is not closed, but is simultaneously supplied with oil with the second oil supply branch, so that the lubricating oil can be ensured to be oiled into the lubricating and cooling cavity through different positions, the sufficient quantity of the lubricating oil is ensured, and the comprehensiveness of lubrication and heat dissipation is further ensured.

Example 3 is different from the above-mentioned examples in that

As shown in fig. 8, in the embodiment of the present invention, the slide rail 30 may include a slide rail body 300, two top protrusions 301 spaced at two sides of the top of the slide rail body 300, and two bottom protrusions 302 spaced at two sides of the bottom of the slide rail body 300.

In an embodiment of the present invention, there may be two sets of the driving components 6, and the two sets of the driving components are respectively disposed on two sides of the sliding rail body 300.

By adopting the technical scheme: in order to improve the stability of the movement of the movable body, the driving assemblies are respectively arranged on the two sides of the sliding rail, the movable body is driven to move from the two sides, the movable body can also be supported, and the movable body can be more stable and smoother when moving (because two symmetrical top lugs and two symmetrical bottom lugs are arranged on the sliding rail body, the sliding rail is ensured to be in an axisymmetric structure as a whole, and the stability of the sliding rail is further ensured); meanwhile, the lubrication of the driving assembly is also carried out simultaneously, referring to fig. 8, an arrow indicates the flowing direction of the lubricating oil, and the specific lubricating flow can refer to embodiment 1.

The above description is only for the purpose of illustrating the preferred embodiments of the present invention and is not to be construed as limiting the invention, and any modifications, equivalents, improvements and the like that fall within the spirit and principle of the present invention are intended to be included therein.

Claims

1. The utility model provides a lower mould mechanism of pincers piston punch press, includes lower bolster (10) that is equipped with a plurality of station (1001,1002,1003), its characterized in that: the lubricating device comprises a moving assembly (2) used for clamping a workpiece and driving the workpiece to move at each station (1001,1002 and 1003) in sequence, a sliding rail assembly (3) matched with the moving assembly (2) and used for the moving assembly (2) to slide, a driving assembly (6) used for controlling the moving assembly (2) to move on the sliding rail assembly (3), and a lubricating system (4) used for lubricating the moving assembly (2), the sliding rail assembly (3) and the driving assembly (6) at the same time.

2. The lower die mechanism of a caliper piston punch of claim 1, wherein: the sliding rail assembly (3) comprises a sliding rail (30) and a heat dissipation block (31) tightly attached to the sliding rail (30); the moving assembly (2) comprises a moving body (21) provided with a sliding groove (20) matched with the sliding rail (30), at least one air cylinder (22) arranged on one side of the moving body (21) close to the stations (1001,1002 and 1003), and a clamping claw (23) arranged at the output end of the air cylinder (22) and used for clamping a workpiece.

3. The lower die mechanism of a caliper piston punch of claim 2, wherein: the driving assembly (6) comprises at least one driving motor (60) arranged on the sliding rail (30), a lead screw (61) controlled by the driving motor (60) and a connecting seat (62) connected between a movable part of the lead screw (61) and the moving body (21); the driving motor (60) is embedded in the sliding rail (30), and the lead screw (61) corresponds to the matching gap between the moving body (21) and the sliding rail (30).

4. The lower die mechanism of a caliper piston punch according to claim 2 or 3, wherein: the movable body (21) is composed of a top plate (210) arranged on the periphery, a first side plate (211), a second side plate (212) and a partition plate (213) arranged inside the top plate, the first side plate (211) and the second side plate (212), and a sliding groove (20) matched with the sliding rail (30) is formed among the partition plate (213), the first side plate (211) and the second side plate (212).

5. The lower die mechanism of a caliper piston punch of claim 4, wherein: a plurality of lubricating and cooling cavities (210) which are contacted with the outer wall of the sliding rail (30) and communicated with the output end of the lubricating system (4) are arranged in the movable body (21); wherein the lubricating cooling cavity (210) comprises a lubricating branch (2100) formed between the partition plate (213) and the first side plate (211) or between the partition plate (213) and the second side plate (212), a main lubricating path (2101) formed between the partition plate (213) and the top plate (210), an outer annular groove (2102) formed between adjacent partition plates (213), and an inner annular groove (2103) provided on the partition plate (213); wherein the outer annular groove (2102) and the inner annular groove (2103) are respectively communicated with the lubricating main path (2101) and/or the lubricating branch path (2100), and the lubricating main path (2101) is communicated with the lubricating branch path (2100); the output ends of the outer annular groove (2102), the inner annular groove (2103) and the lubricating branch (2100) are all in contact with the sliding rail (30), and the output ends of the outer annular groove, the inner annular groove and the lubricating branch form a lubricating groove (210 a).

6. The lower die mechanism of a caliper piston punch of claim 5, wherein: the slide rail (30) comprises a slide rail body (300), and a top lug (303) and a bottom lug (302) which are integrally formed with the slide rail body (300), distributed on two sides of the slide rail body (300) and longitudinally distributed in a staggered manner; the heat dissipation block (31) is attached to the bottom side (300a) of the sliding rail body (300) provided with the top protruding block (303), the heat dissipation block (31) and the clamping claw (23) are arranged on the same side of the sliding rail (30), and the heat dissipation block (31) is matched with the moving body (21) through lubricating oil.

7. The lower die mechanism of a caliper piston punch according to claim 5 or 6, wherein: the lubricating system (4) comprises at least one oil supply nozzle (40) communicated with the lubricating main path (2101) and an oil supply pump (41) used for conveying lubricating oil to each oil supply nozzle (40); the oil supply nozzle (40) is divided into a first oil supply nozzle (401) communicated with the middle of the lubricating main path (2101) and second oil supply nozzles (402) communicated with the two ends of the lubricating main path (2101), and the second oil supply nozzles (402) are respectively in one-to-one correspondence with the inner annular grooves (2103); the lubricating system (4) further comprises an oil control device for controlling the oil supply pump (41) to supply lubricating oil to the first oil supply nozzle (401) and the second oil supply nozzle (402); the oil control device comprises a valve body (420) with a first chamber (421) and a second chamber (422), a first oil outlet (4201a) and a second oil outlet (4202a) which are arranged on the valve body (420) and communicated with the first chamber (421) or the second chamber (422), a first oil inlet (4201b) and a second oil inlet (4202b) which are arranged on the valve body (420) and communicated with the first chamber (421), a third oil inlet (4203b) is arranged between the first chamber (421) and the second chamber (422), the first oil inlet (4201b) and the second oil inlet (4202b) are respectively communicated with an output end of an oil supply pump (41) through a main oil pipe (423) and an oil distribution pipe (424), and a flow limiting valve (425) is arranged on the oil distribution pipe (424); the second oil inlet (4202b), the first cavity (421), the third oil inlet (4203b), the second cavity (422) and the second oil outlet (4202a) form a first oil supply branch for supplying oil to the second oil supply nozzle (402), and the first oil inlet (4201b), the first cavity (421) and the first oil outlet (4201a) form a second oil supply branch for supplying oil to the first oil supply nozzle (401); and valve cores (50) which are driven by an electromagnetic assembly (5) and are respectively used for opening or closing the first oil supply branch and the second oil supply branch are arranged in the first cavity (421) and the second cavity (422).

8. The lower die mechanism of a caliper piston punch of claim 7, wherein: the valve core (50) comprises a first valve core (501) arranged in a first chamber (421) and a second valve core (502) arranged in a second chamber (422), a first spring (5011) fixedly connected with the inner wall of the first chamber (421) is arranged at one end, far away from a first oil outlet (4201a), of the first valve core (501), and a second spring (5022) fixedly connected with the inner wall of the second chamber (422) is arranged at one end, far away from a third oil inlet (4203b), of the second valve core (502); the electromagnetic assembly (5) is an electromagnetic coil wound on the valve body (420) and used for controlling a second valve core (502); wherein the caliber of the first oil inlet (4201b) is larger than the caliber of the second oil inlet (4202 b).

9. A lubrication method for lubricating a lower die mechanism of a caliper piston punch according to claim 1, comprising the steps of:

10. A method of lubricating as claimed in claim 9, characterised in that: the method also comprises the closing step of the first oil supply branch and the second oil supply branch; wherein the closing step is: after the lubrication process is completed, the electromagnetic coil is powered off, the second valve core is controlled to reset by the second spring after the second valve core loses the magnetic influence of the electromagnetic coil on the second valve core, at the moment, the third oil inlet is closed, the plurality of first oil supply branches are closed by the pilot valve, the purpose of saving lubricating oil is achieved, then, the spring cavity of the first spring is pressurized, the first valve core is controlled to reset by matching with the first spring, at the moment, the first oil inlet is closed, and the second oil supply branch is closed.