CN112081786A - Electrical control system of press machine - Google Patents

Electrical control system of press machine Download PDF

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Publication number
CN112081786A
CN112081786A CN202011061693.7A CN202011061693A CN112081786A CN 112081786 A CN112081786 A CN 112081786A CN 202011061693 A CN202011061693 A CN 202011061693A CN 112081786 A CN112081786 A CN 112081786A
Authority
CN
China
Prior art keywords
module
press
pressure
valve
control system
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Pending
Application number
CN202011061693.7A
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Chinese (zh)
Inventor
宁国安
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.)
Tangyin Dingyuan Engineering Plastics Co ltd
Original Assignee
Tangyin Dingyuan Engineering Plastics Co ltd
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Tangyin Dingyuan Engineering Plastics Co ltd filed Critical Tangyin Dingyuan Engineering Plastics Co ltd
Priority to CN202011061693.7A priority Critical patent/CN112081786A/en
Publication of CN112081786A publication Critical patent/CN112081786A/en
Pending legal-status Critical Current

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Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F15—FLUID-PRESSURE ACTUATORS; HYDRAULICS OR PNEUMATICS IN GENERAL
    • F15B—SYSTEMS ACTING BY MEANS OF FLUIDS IN GENERAL; FLUID-PRESSURE ACTUATORS, e.g. SERVOMOTORS; DETAILS OF FLUID-PRESSURE SYSTEMS, NOT OTHERWISE PROVIDED FOR
    • F15B11/00—Servomotor systems without provision for follow-up action; Circuits therefor
    • F15B11/16—Servomotor systems without provision for follow-up action; Circuits therefor with two or more servomotors
    • F15B11/17—Servomotor systems without provision for follow-up action; Circuits therefor with two or more servomotors using two or more pumps
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C43/00—Compression moulding, i.e. applying external pressure to flow the moulding material; Apparatus therefor
    • B29C43/32—Component parts, details or accessories; Auxiliary operations
    • B29C43/58—Measuring, controlling or regulating
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F15—FLUID-PRESSURE ACTUATORS; HYDRAULICS OR PNEUMATICS IN GENERAL
    • F15B—SYSTEMS ACTING BY MEANS OF FLUIDS IN GENERAL; FLUID-PRESSURE ACTUATORS, e.g. SERVOMOTORS; DETAILS OF FLUID-PRESSURE SYSTEMS, NOT OTHERWISE PROVIDED FOR
    • F15B13/00—Details of servomotor systems ; Valves for servomotor systems
    • F15B13/02—Fluid distribution or supply devices characterised by their adaptation to the control of servomotors
    • F15B13/06—Fluid distribution or supply devices characterised by their adaptation to the control of servomotors for use with two or more servomotors
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F15—FLUID-PRESSURE ACTUATORS; HYDRAULICS OR PNEUMATICS IN GENERAL
    • F15B—SYSTEMS ACTING BY MEANS OF FLUIDS IN GENERAL; FLUID-PRESSURE ACTUATORS, e.g. SERVOMOTORS; DETAILS OF FLUID-PRESSURE SYSTEMS, NOT OTHERWISE PROVIDED FOR
    • F15B20/00—Safety arrangements for fluid actuator systems; Applications of safety devices in fluid actuator systems; Emergency measures for fluid actuator systems
    • F15B20/005—Leakage; Spillage; Hose burst
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F15—FLUID-PRESSURE ACTUATORS; HYDRAULICS OR PNEUMATICS IN GENERAL
    • F15B—SYSTEMS ACTING BY MEANS OF FLUIDS IN GENERAL; FLUID-PRESSURE ACTUATORS, e.g. SERVOMOTORS; DETAILS OF FLUID-PRESSURE SYSTEMS, NOT OTHERWISE PROVIDED FOR
    • F15B21/00—Common features of fluid actuator systems; Fluid-pressure actuator systems or details thereof, not covered by any other group of this subclass
    • F15B21/02—Servomotor systems with programme control derived from a store or timing device; Control devices therefor
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29K—INDEXING SCHEME ASSOCIATED WITH SUBCLASSES B29B, B29C OR B29D, RELATING TO MOULDING MATERIALS OR TO MATERIALS FOR MOULDS, REINFORCEMENTS, FILLERS OR PREFORMED PARTS, e.g. INSERTS
    • B29K2023/00—Use of polyalkenes or derivatives thereof as moulding material
    • B29K2023/04—Polymers of ethylene
    • B29K2023/06—PE, i.e. polyethylene
    • B29K2023/0658—PE, i.e. polyethylene characterised by its molecular weight
    • B29K2023/0683—UHMWPE, i.e. ultra high molecular weight polyethylene
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29L—INDEXING SCHEME ASSOCIATED WITH SUBCLASS B29C, RELATING TO PARTICULAR ARTICLES
    • B29L2007/00—Flat articles, e.g. films or sheets
    • B29L2007/002—Panels; Plates; Sheets
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F15—FLUID-PRESSURE ACTUATORS; HYDRAULICS OR PNEUMATICS IN GENERAL
    • F15B—SYSTEMS ACTING BY MEANS OF FLUIDS IN GENERAL; FLUID-PRESSURE ACTUATORS, e.g. SERVOMOTORS; DETAILS OF FLUID-PRESSURE SYSTEMS, NOT OTHERWISE PROVIDED FOR
    • F15B2211/00—Circuits for servomotor systems
    • F15B2211/20—Fluid pressure source, e.g. accumulator or variable axial piston pump
    • F15B2211/205—Systems with pumps
    • F15B2211/20576—Systems with pumps with multiple pumps
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F15—FLUID-PRESSURE ACTUATORS; HYDRAULICS OR PNEUMATICS IN GENERAL
    • F15B—SYSTEMS ACTING BY MEANS OF FLUIDS IN GENERAL; FLUID-PRESSURE ACTUATORS, e.g. SERVOMOTORS; DETAILS OF FLUID-PRESSURE SYSTEMS, NOT OTHERWISE PROVIDED FOR
    • F15B2211/00—Circuits for servomotor systems
    • F15B2211/20—Fluid pressure source, e.g. accumulator or variable axial piston pump
    • F15B2211/25—Pressure control functions
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F15—FLUID-PRESSURE ACTUATORS; HYDRAULICS OR PNEUMATICS IN GENERAL
    • F15B—SYSTEMS ACTING BY MEANS OF FLUIDS IN GENERAL; FLUID-PRESSURE ACTUATORS, e.g. SERVOMOTORS; DETAILS OF FLUID-PRESSURE SYSTEMS, NOT OTHERWISE PROVIDED FOR
    • F15B2211/00—Circuits for servomotor systems
    • F15B2211/70—Output members, e.g. hydraulic motors or cylinders or control therefor
    • F15B2211/78—Control of multiple output members

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Physics & Mathematics (AREA)
  • Fluid Mechanics (AREA)
  • General Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Analytical Chemistry (AREA)
  • Press Drives And Press Lines (AREA)

Abstract

The invention belongs to the technical field of plastic processing equipment, and particularly discloses an electrical control system of a press machine, which comprises a low-pressure module for outputting low-pressure oil and a high-pressure module for outputting high-pressure oil, wherein the low-pressure module and the high-pressure module are respectively connected with a first pipeline, the first pipeline is respectively communicated with a hydraulic cylinder of the press machine through a first electric switch valve, the hydraulic cylinder of the press machine is directly communicated with the first pipeline through a pressure supplementing module, the hydraulic cylinder of the press machine is respectively connected with an unloading module and a liquid discharging module, the unloading module, the liquid discharging module, the low-pressure module and the high-pressure module are all connected with a controller, and the controller is electrically connected with a pressure sensor of the press machine; the whole process is automatically controlled through the controller, and manual work is realized by arranging a plc program in the controller in advance, so that the automation degree is high, and the labor cost is effectively reduced.

Description

Electrical control system of press machine
Technical Field
The invention relates to the technical field of machining equipment, in particular to an electrical control system of a press machine.
Background
With the development of science and technology, engineering plastics are applied to more and more fields, and are generally applied in the form of engineering plastic straight plates, but when manufacturing ultrahigh molecular weight polyethylene plates, raw materials need to be pressed and shaped by a hot press and a cold press in sequence.
However, the existing equipment adjusts the pressure of the hot press and the cold press through manual control, requires abundant working experience of workers and has high labor cost.
Disclosure of Invention
In view of the problems in the prior art, the invention aims to provide an electrical control system of a press machine, so as to realize automatic pressure control of the press machine.
In order to achieve the purpose, the technical scheme of the invention is as follows:
the utility model provides a press electrical control system, is including the low pressure module of output low pressure fluid and the high pressure module of output high pressure fluid, low pressure module and high pressure module respectively with first pipe connection, just first pipeline is respectively through the pneumatic cylinder of first electric switch valve with the press, just the pneumatic cylinder of press is through mending the direct first pipeline intercommunication of pressure module, just the pneumatic cylinder of press is connected with off-load module and flowing back module respectively, just off-load module, flowing back module, low pressure module and high pressure module all are connected with the controller, the pressure sensor electricity of controller and press is connected.
Further, the press machine is a cold press or a hot press.
Further, the low pressure module includes check valve, first oil tank and low-pressure pump, the import and the first oil tank union coupling of low-pressure pump, the export passes through check valve and first pipe connection, just the export of low-pressure pump passes through the low pressure overflow valve and connects the second oil tank.
Further, the high pressure module includes check valve, third oil tank and high-pressure pump, the import and the third oil tank union coupling of high-pressure pump, the export is passed through check valve and first pipe connection, just the export of high-pressure pump passes through high-pressure overflow valve and connects the fourth oil tank.
Further, the pressure supplementing module comprises a two-position two-way electromagnetic valve, and the first pipeline is connected with a hydraulic cylinder of the press machine through the two-position two-way electromagnetic valve.
Further, the unloading module comprises a two-position two-way electromagnetic valve, and a hydraulic cylinder of the press machine is connected with a fifth oil tank pipe through the two-position two-way electromagnetic valve.
Further, the liquid discharge module comprises a second electric switch valve and a sixth oil tank, and the hydraulic cylinder of the press machine is connected with the sixth oil tank pipe through the second electric switch valve.
Compared with the prior art, the electrical control system of the press machine provided by the invention is distinctive in structure and convenient to operate, and comprises a low-pressure module for outputting low-pressure oil and a high-pressure module for outputting high-pressure oil, wherein the low-pressure module and the high-pressure module are respectively connected with a first pipeline, the first pipeline is respectively communicated with a hydraulic cylinder of the press machine through a first electric switch valve, the hydraulic cylinder of the press machine is directly communicated with the first pipeline through a pressure supplementing module, the hydraulic cylinder of the press machine is respectively connected with an unloading module and a liquid discharging module, the unloading module, the liquid discharging module, the low-pressure module and the high-pressure module are all connected with a controller, and the controller is electrically connected with a pressure sensor of the press machine.
In actual production, a hydraulic cylinder of a press machine is filled with liquid through a low-pressure module to lift the hydraulic cylinder, pre-compaction is further completed, after the pre-compaction is completed, a first electric switch valve is closed, the high-pressure module is used for performing secondary pressure compensation on the hydraulic cylinder through a pressure compensation module, pressing force applied to raw materials by the hydraulic cylinder in the press machine is improved, constant pressure is completed, after extrusion is completed, the hydraulic cylinder is unloaded in advance through an unloading module, the oil pressure of the hydraulic cylinder is slowly reduced, then a liquid drainage module is opened to drain oil in the hydraulic cylinder, the hydraulic cylinder is lowered, the press machine is controlled to be started, products are taken and placed, automatic control is achieved through a controller in the whole process, a plc program is manually arranged in the controller in advance, the degree of automation is high, and labor.
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, 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 the drawings without creative efforts.
FIG. 1 is a schematic structural diagram of the present invention.
In the figure: the hot press comprises a low-pressure module 1, a low-pressure pump 101, a low-pressure overflow valve 102, a one-way valve 2, a high-pressure module 3, a high-pressure pump 301, a high-pressure overflow valve 302, a first pipeline 4, a first electric switch valve 5, a second electric switch valve 6, a pressure supplementing module 7, a cold press 8, an unloading module 9 and a hot press 10.
Detailed Description
The technical solution in the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention. It is to be understood that the described embodiments are merely exemplary of the invention, and not restrictive of the full scope of the invention. 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.
As shown in fig. 1, an electrical control system for a press machine according to a preferred embodiment of the present invention includes a low-pressure module 1 outputting low-pressure oil and a high-pressure module 3 outputting high-pressure oil, where the low-pressure module 1 and the high-pressure module 3 are respectively connected to a first pipeline 4, the first pipeline 4 is respectively connected to a hydraulic cylinder of the press machine through a first electrical switch valve 5, the hydraulic cylinder of the press machine is directly communicated with the first pipeline 4 through a pressure compensation module 7, the hydraulic cylinder of the press machine is respectively connected to an unloading module 9 and a liquid discharge module, the unloading module 9, the liquid discharge module, the low-pressure module 1 and the high-pressure module 3 are all connected to a controller, and the controller is electrically connected to a pressure sensor of the press machine.
When the electrical control system of the press machine provided by the invention is applied, in actual production, the hydraulic cylinder of the press machine is filled with liquid through the low-voltage module 1 to lift the hydraulic cylinder, so that pre-compaction is completed, after the pre-compaction is completed, the first electric switch valve 5 is closed, secondary pressure supplement is performed on the hydraulic cylinder through the pressure supplement module 7 by using the high-voltage module 3, the pressing force of the hydraulic cylinder acting on raw materials in the press machine is improved, so that constant pressure is completed, after extrusion is completed, the hydraulic cylinder is unloaded in advance through the unloading module 9, so that the oil pressure of the hydraulic cylinder is slowly reduced, then the liquid drainage module is opened to drain oil in the hydraulic cylinder, so that the hydraulic cylinder is lowered, the press machine is controlled to be opened, so that products are taken and placed, the whole process is automatically controlled through the controller, and a plc program is manually arranged in.
In the above embodiments, the press is a cold press 8 or a hot press 10, or the cold press 8 and the hot press 10 share this electrical control system.
In the above embodiment, the low pressure module 1 includes the check valve 2, the first oil tank and the low pressure pump 101, the inlet of the low pressure pump 101 is connected to the first oil tank pipe, the outlet is connected to the first pipeline 4 through the check valve 2, and the outlet of the low pressure pump 101 is connected to the second oil tank through the low pressure overflow valve 102, so that the low pressure pump 101 is protected by the low pressure overflow valve 102, and the damage to the low pressure pump 101 caused by the over-pressure due to the blockage of the first pipeline 4 is avoided.
On the basis of the above-mentioned embodiment, high pressure module 3 includes check valve 2, third oil tank and high-pressure pump 301, the import and the third oil tank union coupling of high-pressure pump 301, the export is connected with first pipeline 4 through check valve 2, just the export of high-pressure pump 301 passes through high-pressure overflow valve 302 and connects the fourth oil tank, sets up high-pressure overflow valve 302 and acts on the same way to protect high-pressure pump 301.
More specifically, the pressure supplementing module 7 comprises a two-position two-way electromagnetic valve, the first pipeline 4 is connected with a hydraulic cylinder of the press machine through the two-position two-way electromagnetic valve, and the two-position two-way electromagnetic valve is used for opening and closing the pressure supplementing module 7 in actual production.
On the basis of the above embodiment, the unloading module 9 includes a two-position two-way solenoid valve, the hydraulic cylinder of the press machine is connected to the fifth oil tank pipe through the two-position two-way solenoid valve, and similarly, unloading or pressure maintaining of the unloading module 9 is realized through the two-position two-way solenoid valve.
Specifically, the liquid discharge module comprises a second electric switch valve 6 and a sixth oil tank, and the hydraulic cylinder of the press is connected with the sixth oil tank through the second electric switch valve 6.
Finally, it should also be noted that, herein, relational terms such as first and second, and the like may be used solely to distinguish one entity or action from another entity or action without necessarily requiring or implying any actual such relationship or order between such entities or actions. Also, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus. Without further limitation, an element defined by the phrase "comprising an … …" does not exclude the presence of other identical elements in a process, method, article, or apparatus that comprises the element.
The embodiments in the present description are described in a progressive manner, each embodiment focuses on differences from other embodiments, and the same and similar parts among the embodiments are referred to each other.
The previous description of the disclosed embodiments is provided to enable any person skilled in the art to make or use the present invention. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the generic principles defined herein may be applied to other embodiments without departing from the spirit or scope of the invention. Thus, the present invention is not intended to be limited to the embodiments shown herein but is to be accorded the widest scope consistent with the principles and novel features disclosed herein.

Claims (7)

1. The utility model provides a press electrical control system, its characterized in that, is including the low pressure module of output low pressure fluid and the high pressure module of output high pressure fluid, low pressure module and high pressure module respectively with first pipe connection, just first pipeline is respectively through the pneumatic cylinder of first electric switch valve with the press, just the pneumatic cylinder of press is through the direct first pipeline intercommunication of pressure supplementing module, just the pneumatic cylinder of press is connected with off-load module and flowing back module respectively, just off-load module, flowing back module, low pressure module and high pressure module all are connected with the controller, the pressure sensor electricity of controller and press is connected.
2. Press electrical control system according to claim 1, characterized in that the press is a cold press or a hot press.
3. Press electrical control system according to claim 2, characterized in that the low pressure module comprises a check valve, a first oil tank and a low pressure pump, the inlet of the low pressure pump is connected with a first oil tank pipe, the outlet is connected with a first pipe through a check valve, and the outlet of the low pressure pump is connected with a second oil tank through a low pressure overflow valve.
4. A press electrical control system according to claim 3, characterised in that the high pressure module comprises a non return valve, a third oil tank and a high pressure pump, that the inlet of the high pressure pump is connected to the third tank pipe, that the outlet is connected to the first pipe via a non return valve and that the outlet of the high pressure pump is connected to the fourth oil tank via a high pressure overflow valve.
5. Press electrical control system according to claim 4, characterized in that the pressure supplementing module comprises a two-position two-way solenoid valve, the first conduit being connected to the hydraulic cylinder of the press by means of the two-position two-way solenoid valve.
6. Press electrical control system according to claim 5, characterized in that the unloading module comprises a two-position two-way solenoid valve, the hydraulic cylinder of the press being connected to a fifth tank pipe by means of the two-position two-way solenoid valve.
7. Press electrical control system according to claim 6, characterized in that the drainage module comprises a second electrically operated on-off valve and a sixth tank, the hydraulic cylinder of the press being connected to the sixth tank pipe through the second electrically operated on-off valve.
CN202011061693.7A 2020-09-30 2020-09-30 Electrical control system of press machine Pending CN112081786A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN202011061693.7A CN112081786A (en) 2020-09-30 2020-09-30 Electrical control system of press machine

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN202011061693.7A CN112081786A (en) 2020-09-30 2020-09-30 Electrical control system of press machine

Publications (1)

Publication Number Publication Date
CN112081786A true CN112081786A (en) 2020-12-15

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Family Applications (1)

Application Number Title Priority Date Filing Date
CN202011061693.7A Pending CN112081786A (en) 2020-09-30 2020-09-30 Electrical control system of press machine

Country Status (1)

Country Link
CN (1) CN112081786A (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN112780617A (en) * 2021-01-25 2021-05-11 郑州东辰科技有限公司 Carbon dioxide liquid-gas phase conversion actuator
CN115853753A (en) * 2022-12-22 2023-03-28 中国第一汽车股份有限公司 Oil pump unloading system, method, storage medium and vehicle

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN112780617A (en) * 2021-01-25 2021-05-11 郑州东辰科技有限公司 Carbon dioxide liquid-gas phase conversion actuator
CN112780617B (en) * 2021-01-25 2023-08-25 郑州东辰科技有限公司 Carbon dioxide liquid-gas phase conversion actuator
CN115853753A (en) * 2022-12-22 2023-03-28 中国第一汽车股份有限公司 Oil pump unloading system, method, storage medium and vehicle

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Application publication date: 20201215

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