CN109443819A - A kind of press machine loading device - Google Patents

A kind of press machine loading device Download PDF

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Publication number
CN109443819A
CN109443819A CN201811526768.7A CN201811526768A CN109443819A CN 109443819 A CN109443819 A CN 109443819A CN 201811526768 A CN201811526768 A CN 201811526768A CN 109443819 A CN109443819 A CN 109443819A
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CN
China
Prior art keywords
cylinder
end cap
side end
piston rod
hydraulic
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Granted
Application number
CN201811526768.7A
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Chinese (zh)
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CN109443819B (en
Inventor
陈浩
张蔚
权洁
马晓明
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Changzhou Xingongyi Precision Machinery Co.,Ltd.
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Changzhou Vocational Institute of Textile and Garment
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Publication of CN109443819A publication Critical patent/CN109443819A/en
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    • GPHYSICS
    • G01MEASURING; TESTING
    • G01MTESTING STATIC OR DYNAMIC BALANCE OF MACHINES OR STRUCTURES; TESTING OF STRUCTURES OR APPARATUS, NOT OTHERWISE PROVIDED FOR
    • G01M99/00Subject matter not provided for in other groups of this subclass
    • G01M99/007Subject matter not provided for in other groups of this subclass by applying a load, e.g. for resistance or wear testing
    • YGENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02PCLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
    • Y02P70/00Climate change mitigation technologies in the production process for final industrial or consumer products
    • Y02P70/10Greenhouse gas [GHG] capture, material saving, heat recovery or other energy efficient measures, e.g. motor control, characterised by manufacturing processes, e.g. for rolling metal or metal working

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  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Press Drives And Press Lines (AREA)

Abstract

The present invention discloses a kind of press machine loading device, including intermediate cylinder and symmetrically arranged two hydraulic cylinders being located at left and right sides of cylinder, the cylinder piston rod top of cylinder passes through the shaft shoulder, big retaining ring and big nut are equipped with limit plate, cylinder piston is connected in the bottom of cylinder piston rod, the cylinder piston is located in cylinder barrel, it is cylinder rodless side end cap in the bottom of cylinder barrel, top is that cylinder has bar side end cap, there is the piston rod through-hole for being equipped in bar side end cap and passing through vertically through the appearance cylinder piston rod of its upper and lower surface in cylinder, cylinder guidance set of the ring set outside cylinder piston rod is equipped in piston rod via top, cylinder retaining ring is equipped in the top of cylinder guidance set.Loading device disclosed by the invention provides controllable, stable stamping press for the punch test of press machine, to guarantee going on smoothly for punch test.

Description

A kind of press machine loading device
Technical field
The present invention relates to press machine technical fields, more particularly, to a kind of press machine loading device.
Background technique
As a kind of efficient forging equipment, high velocity ram machine is in aerospace, automobile manufacture, communications and transportation, chemical metallurgy Etc. essential industries field be widely used.Especially in recent years, the manufacturing rapid development leading with automobile, greatly The progress for having pushed China's punching press industry greatly, with the quickening of market globalization paces, same industry competition is more and more fierce;With this Meanwhile more stringent requirements are proposed for reliability of the user to Forging equipment.
For the reliability for guaranteeing press machine, need to carry out punch test before factory.In the prior art, press machine factory is normal It is tested using driving test, i.e. the direct punching press steel ingot of sliding block, this method is simple and easy, but there are larger drawbacks: stamping press Not easy to control, misoperation is easy to appear overload, larger to lathe injury, while also will appear bored vehicle problem.
Summary of the invention
To solve the above-mentioned problems, the present invention provides a kind of press machine loading device, is the punch test of press machine Controllable, stable stamping press is provided, to guarantee going on smoothly for punch test.
To realize above-mentioned technical purpose and the technique effect, the present invention is achieved by the following technical solutions: one Kind of press machine loading device, it is hydraulic including intermediate cylinder and be located at left and right sides of cylinder symmetrically arranged two The cylinder piston rod top of cylinder, cylinder is equipped with limit plate by the shaft shoulder, big retaining ring and big nut, in the bottom of cylinder piston rod Cylinder piston is connected, the cylinder piston is located in cylinder barrel, is cylinder rodless side end cap, top in the bottom of cylinder barrel There is bar side end cap for cylinder, has in cylinder and be equipped with what the appearance cylinder piston rod for running through its upper and lower surface vertically passed through in bar side end cap Piston rod through-hole is equipped with cylinder guidance set of the ring set outside cylinder piston rod in piston rod via top, in cylinder guidance set Top be equipped with cylinder retaining ring.
Further, the bottom of the hydraulic cylinder piston rod of the hydraulic cylinder be equipped with hydraulic cylinder piston, top by the shaft shoulder and Primary nut is equipped with small retaining ring, the position on the upside of small retaining ring limitation limit plate, and the hydraulic cylinder piston is located in Barrel of Hydraulic Cylinders, Barrel of Hydraulic Cylinders bottom is hydraulic cylinder rodless side end cap, top is that hydraulic cylinder has bar side end cap, there is bar side end cap in hydraulic cylinder Top is equipped with end cap, end cap and hydraulic cylinder have corresponding position on bar side end cap be equipped with hold hydraulic cylinder piston rod pass through it is perpendicular Straight hydraulic rod through-hole has the hydraulic stem via top in bar side end cap to be equipped with ring set outside hydraulic cylinder piston rod in hydraulic cylinder Guide sleeve.
Further, the cylinder rodless side end cap and hydraulic cylinder rodless side end cap are mounted by means of bolts on substrate On.
Further, wear ring is equipped in the periphery of cylinder piston.
Further, around a spring, the bottom on the top of spring and cylinder guidance set on cylinder piston club body It is fixedly connected, bottom end is fixedly connected with the top surface of cylinder piston.
Further, the cylinder piston will be divided into two cavitys up and down inside cylinder barrel, in cylinder rodless side end cap It is equipped with the high pressure gas injection gallery being connected to the lower section cavity of cylinder barrel, the hydraulic cylinder piston will be in Barrel of Hydraulic Cylinders Part has the high pressure oil for being equipped on bar side end cap and being connected to cavity above Barrel of Hydraulic Cylinders to fill at upper and lower two cavitys, in hydraulic cylinder Enter channel.
The beneficial effects of the present invention are:
1. press machine loading device disclosed by the invention uses cylinder as loading element, by adjusting cylinder pressure Realize the adjustment to load is applied;
2. installing limit plate on cylinder piston rod, and the protrusion height of piston rod is adjusted by the hydraulic cylinder of cylinder two sides, The loading device is enabled to be applicable in the press machine of different Dimension Types;
3. being equipped with spring on the piston rod between cylinder guidance set and cylinder piston, piston rod is multiple after can reducing load Impact force when position between small retaining ring and limit plate.
Detailed description of the invention
Fig. 1 is a kind of structural schematic diagram of press machine loading device disclosed by the invention.
Wherein, 1- cylinder piston rod, 2- big nut, the big retaining ring of 3-, 4- limit plate, 5- primary nut, the small retaining ring of 6-, 7- are hydraulic Cylinder piston rod, 8- end cap, 9- guide sleeve, the hydraulic thick stick of 10- have bar side end cap, 11- Barrel of Hydraulic Cylinders, 12- hydraulic cylinder piston, 13- Hydraulic cylinder rodless side end cap, 16- cylinder rodless side end cap, 17- cylinder barrel, 18- wear ring, 19- cylinder piston, 20- spring, 21- cylinder has bar side end cap, 22- cylinder guidance set, 23- cylinder retaining ring.
Specific embodiment
1 the preferred embodiments of the present invention will be described in detail with reference to the accompanying drawing, so that advantages and features of the invention It can be easier to be readily appreciated by one skilled in the art, so as to make a clearer definition of the protection scope of the present invention.
In order to which the punch test for press machine provides controllable, stable stamping press, the present invention discloses a kind of press machine Bed loading device including intermediate cylinder and is located at symmetrically arranged two hydraulic cylinders of cylinder arranged on left and right sides, cylinder 1 top of cylinder piston rod is equipped with limit plate 4 by the shaft shoulder, big retaining ring 3 and big nut 2, connects in the bottom of cylinder piston rod 1 Cylinder piston 19, the cylinder piston 19 are located in cylinder barrel 17, wear ring 18 are equipped in the periphery of cylinder piston 19, in gas The bottom of cylinder cylinder barrel 17 is cylinder rodless side end cap 16, top is that cylinder has bar side end cap 21, is had in bar side end cap 21 in cylinder Equipped with the piston rod through-hole that the appearance cylinder piston rod 1 for running through its upper and lower surface vertically passes through, ring is equipped in piston rod via top The cylinder guidance set 22 outside cylinder piston rod 1 is covered, is equipped with cylinder retaining ring 23 in the top of cylinder guidance set 22, it is living in cylinder Around a spring 20 on 1 shaft of stopper rod, the top of spring 20 is fixedly connected with the bottom that cylinder guidance covers 22, bottom end and cylinder The top surface of piston 19 is fixedly connected.
The bottom of the hydraulic cylinder piston rod 7 of the hydraulic cylinder is equipped with hydraulic cylinder piston 12, top passes through the shaft shoulder and primary nut 5 are equipped with small retaining ring 6, and small retaining ring 6 limits the position of 4 upside of limit plate, and the hydraulic cylinder piston 12 is located at Barrel of Hydraulic Cylinders 11 It is interior, 11 bottom of Barrel of Hydraulic Cylinders is hydraulic cylinder rodless side end cap 13, top is that hydraulic cylinder has bar side end cap 10, have in hydraulic cylinder It is equipped with end cap 8 at the top of bar side end cap 10, has corresponding position on bar side end cap 10 to be equipped with appearance hydraulic cylinder in end cap 8 and hydraulic cylinder The vertical hydraulic rod through-hole that piston rod 7 passes through has the hydraulic stem via top in bar side end cap 10 to be equipped with ring set in hydraulic cylinder Guide sleeve 9 outside hydraulic cylinder piston rod 7.
The cylinder rodless side end cap 16 and hydraulic cylinder rodless side end cap 13 are fixedly mounted on substrate 14 by bolt 15 On.
The cylinder piston 19 will be divided into two cavitys up and down inside cylinder barrel 17, set on cylinder rodless side end cap 16 There is the high pressure gas injection gallery being connected to the lower section cavity of cylinder barrel 17;The hydraulic cylinder piston 12 is by Barrel of Hydraulic Cylinders 11 Inside is divided into two cavitys up and down, there is the height for being equipped on bar side end cap 10 and being connected to cavity above Barrel of Hydraulic Cylinders 11 in hydraulic cylinder Pressure oil injection gallery
Specific operating process are as follows: before press machine carries out punch test, loading device disclosed by the invention is mounted on punching On the workbench of press bed, high pressure gas, pusher cylinder piston are passed through between cylinder rodless side end cap 16 and cylinder piston 19 Bar 1 stretches out upwards, and limit plate 4 is driven to move up, the hydraulic cylinder of the hydraulic cylinder of cylinder two sides have bar side end cap 10 with it is hydraulic It is passed through high pressure oil between the cylinder piston 12, under actual motion condition, the high pressure oil of two hydraulic cylinders can also be poured into chamber connection, the party Method can guarantee that the pressure in two hydraulic cylinders is identical, and the resultant force of two hydraulic cylinder pulling force is greater than the thrust of cylinder, by adjusting The fuel delivery of cavity adjusts the height of cylinder piston rod 1 on the upside of hydraulic cylinder, is adjusted to cut off the confession of hydraulic cylinder after ideal height Oil completes height adjustment operation.
When press machine carries out punch test, slide block movement to bottom dead center-nearby, the top of blow cylinder piston rod 1, Cylinder piston rod 1 moves downward under the influence of the impact force, after sliding block, which leaves lower dead point position, to be moved upwards, cylinder piston rod 1 returns to setting height under the action of compressed air, completes a punch test, and the limit plate 4 in the present invention is mainly used to limit Determine movement when cylinder piston rod 1 resets upwards after the completion of punching press.Piston between cylinder guidance set 22 and cylinder piston 19 The spring 20 installed on bar 1 can reduce impact force when piston rod 1 after load resets between small retaining ring 6 and limit plate 4.Pass through The air pressure for adjusting compressed air between cylinder rodless side end cap 16 and cylinder piston 19 can be realized and apply to press machine sliding block Load be adjusted.
The above description is only an embodiment of the present invention, is not intended to limit the scope of the invention, all to utilize this hair Equivalent structure or equivalent flow shift made by bright specification and accompanying drawing content is applied directly or indirectly in other relevant skills Art field, is included within the scope of the present invention.

Claims (6)

1. a kind of press machine loading device, which is characterized in that including intermediate cylinder and be located at cylinder arranged on left and right sides Cylinder piston rod (1) top of symmetrically arranged two hydraulic cylinders, cylinder passes through the shaft shoulder, big retaining ring (3) and big nut (2) installation There are limit plate (4), connects cylinder piston (19) in the bottom of cylinder piston rod (1), the cylinder piston (19) is located at cylinder cylinder In cylinder (17), the bottom of cylinder barrel (17) is cylinder rodless side end cap (16), top is that cylinder has bar side end cap (21), Cylinder has the piston rod through-hole for being equipped in bar side end cap (21) and passing through vertically through the appearance cylinder piston rod (1) of its upper and lower surface, It is equipped with the ring set cylinder guidance set (22) external in cylinder piston rod (1) in piston rod via top, in cylinder guidance set (22) Top be equipped with cylinder retaining ring (23).
2. a kind of press machine loading device as described in claim 1, which is characterized in that the hydraulic cylinder piston of the hydraulic cylinder The bottom of bar (7) is equipped with hydraulic cylinder piston (12), top and is equipped with small retaining ring (6), the liquid by the shaft shoulder and primary nut (5) Pressure cylinder piston (12) is located in Barrel of Hydraulic Cylinders (11), Barrel of Hydraulic Cylinders (11) bottom be hydraulic cylinder rodless side end cap (13), Top is that hydraulic cylinder has bar side end cap (10), has in hydraulic cylinder and is equipped with end cap (8) at the top of bar side end cap (10), in end cap (8) and Hydraulic cylinder has the vertical hydraulic stem that corresponding position is equipped with that appearance hydraulic cylinder piston rod (7) passes through on bar side end cap (10) to lead to Hole has the hydraulic stem via top in bar side end cap (10) to be equipped with ring set leading in hydraulic cylinder piston rod (7) outside in hydraulic cylinder To set (9).
3. a kind of press machine loading device as claimed in claim 2, which is characterized in that the cylinder rodless side end cap (16) It is fixedly mounted on substrate (14) by bolt (15) with hydraulic cylinder rodless side end cap (13).
4. a kind of press machine loading device as claimed in claim 3, which is characterized in that set in the periphery of cylinder piston (19) There are wear ring (18).
5. a kind of press machine loading device as claimed in claim 4, which is characterized in that on cylinder piston rod (1) shaft Around a spring (20), the top of spring (20) is fixedly connected with the bottom of cylinder guidance set (22), bottom end and cylinder piston (19) top surface is fixedly connected.
6. a kind of press machine loading device as claimed in claim 5, which is characterized in that the cylinder piston (19) is by cylinder It is divided into two cavitys up and down inside cylinder barrel (17), the lower section chamber with cylinder barrel (17) is equipped on cylinder rodless side end cap (16) The high pressure gas injection gallery of body connection;The hydraulic cylinder piston (12) will be divided into two chambers up and down inside Barrel of Hydraulic Cylinders (11) Body has the high pressure oil injection gallery for being equipped on bar side end cap (10) and being connected to cavity above Barrel of Hydraulic Cylinders (11) in hydraulic cylinder.
CN201811526768.7A 2018-12-13 2018-12-13 Loading device of stamping machine tool Active CN109443819B (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN201811526768.7A CN109443819B (en) 2018-12-13 2018-12-13 Loading device of stamping machine tool

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN201811526768.7A CN109443819B (en) 2018-12-13 2018-12-13 Loading device of stamping machine tool

Publications (2)

Publication Number Publication Date
CN109443819A true CN109443819A (en) 2019-03-08
CN109443819B CN109443819B (en) 2023-09-12

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Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN110579409A (en) * 2019-10-11 2019-12-17 青岛维思顿智能新材料有限公司 Test instrument and test method for three-point bending strength test

Citations (14)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH08281344A (en) * 1995-04-11 1996-10-29 Toyota Motor Corp Method and device for press working
CN201351644Y (en) * 2009-01-14 2009-11-25 魏玉斌 Air controlled hydraulic system device
CN101683582A (en) * 2008-09-24 2010-03-31 上海瑞气气体设备有限公司 Molecular sieve compressing device of pressure swing adsorption air separation unit adsorption tower
KR20100063989A (en) * 2008-12-04 2010-06-14 임재범 Hydraulic machine for the production of artificial coal briquette
CN201513412U (en) * 2009-10-09 2010-06-23 浙江进泰机械设备有限公司 Combined pneumatic/hydraulic one-way stroke speed-regulating cylinder
CN203098457U (en) * 2013-02-01 2013-07-31 上海尊优自动化设备有限公司 Gas-liquid pressure cylinder
DE102012008902A1 (en) * 2012-05-08 2013-11-14 Tox Pressotechnik Gmbh & Co. Kg Hydropneumatic device for pressure transmission and riveting device
RU141437U1 (en) * 2013-03-22 2014-06-10 Общество с ограниченной ответственностью "Браво Моторс" TARNSFORMATION HYDROCYLINDER
CN104422597A (en) * 2013-08-29 2015-03-18 深圳市弗赛特检测设备有限公司 Constant-force loading device of test stand of drilling tool
CN104515676A (en) * 2014-12-11 2015-04-15 重庆亿铸机械制造有限公司 Lever mechanism on tensile testing machine for springs
US20160245313A1 (en) * 2013-11-29 2016-08-25 Byd Company Limited Forklift, hydraulic cylinder assembly and hydraulic device thereof
CN106481613A (en) * 2016-08-25 2017-03-08 北京冶自欧博科技发展有限公司 A kind of machine liquid dual fail-safe locked hydraulic cylinder
CN107202043A (en) * 2017-07-14 2017-09-26 太仓优捷特机械有限公司 A kind of pneumatic-hydraulic mixing punching press control system
CN209027814U (en) * 2018-12-13 2019-06-25 常州纺织服装职业技术学院 A kind of press machine loading device

Patent Citations (14)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH08281344A (en) * 1995-04-11 1996-10-29 Toyota Motor Corp Method and device for press working
CN101683582A (en) * 2008-09-24 2010-03-31 上海瑞气气体设备有限公司 Molecular sieve compressing device of pressure swing adsorption air separation unit adsorption tower
KR20100063989A (en) * 2008-12-04 2010-06-14 임재범 Hydraulic machine for the production of artificial coal briquette
CN201351644Y (en) * 2009-01-14 2009-11-25 魏玉斌 Air controlled hydraulic system device
CN201513412U (en) * 2009-10-09 2010-06-23 浙江进泰机械设备有限公司 Combined pneumatic/hydraulic one-way stroke speed-regulating cylinder
DE102012008902A1 (en) * 2012-05-08 2013-11-14 Tox Pressotechnik Gmbh & Co. Kg Hydropneumatic device for pressure transmission and riveting device
CN203098457U (en) * 2013-02-01 2013-07-31 上海尊优自动化设备有限公司 Gas-liquid pressure cylinder
RU141437U1 (en) * 2013-03-22 2014-06-10 Общество с ограниченной ответственностью "Браво Моторс" TARNSFORMATION HYDROCYLINDER
CN104422597A (en) * 2013-08-29 2015-03-18 深圳市弗赛特检测设备有限公司 Constant-force loading device of test stand of drilling tool
US20160245313A1 (en) * 2013-11-29 2016-08-25 Byd Company Limited Forklift, hydraulic cylinder assembly and hydraulic device thereof
CN104515676A (en) * 2014-12-11 2015-04-15 重庆亿铸机械制造有限公司 Lever mechanism on tensile testing machine for springs
CN106481613A (en) * 2016-08-25 2017-03-08 北京冶自欧博科技发展有限公司 A kind of machine liquid dual fail-safe locked hydraulic cylinder
CN107202043A (en) * 2017-07-14 2017-09-26 太仓优捷特机械有限公司 A kind of pneumatic-hydraulic mixing punching press control system
CN209027814U (en) * 2018-12-13 2019-06-25 常州纺织服装职业技术学院 A kind of press machine loading device

Non-Patent Citations (3)

* Cited by examiner, † Cited by third party
Title
林吉靓, 曹红英: "双作用液压缸在冲压机中的新应用", 锻压装备与制造技术, vol. 44, no. 06, pages 34 - 36 *
胡英贝;韩涛;杨晨;闫伟;张辛;: "测量用空气主轴高精度加载系统", 轴承, no. 12, pages 60 - 63 *
韩艳, 宁艳春, 李浩堂: "气液增压缸的结构原理与应用", 液压气动与密封, vol. 31, no. 11, pages 73 - 75 *

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN110579409A (en) * 2019-10-11 2019-12-17 青岛维思顿智能新材料有限公司 Test instrument and test method for three-point bending strength test

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Effective date of registration: 20240530

Address after: No. 13-120 Mingxin Middle Road, Hutang Town, Wujin District, Changzhou City, Jiangsu Province, 213164

Patentee after: Changzhou Xingongyi Precision Machinery Co.,Ltd.

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Address before: 213164 No.53 Gehu Middle Road, HUTANG Town, Wujin District, Changzhou City, Jiangsu Province

Patentee before: Changzhou Vocational Institute of Textile and Garment

Country or region before: China