CN106965399A - Safety door mechanical protection lock before a kind of large size plastic jetting-moulding device is automatic - Google Patents
Safety door mechanical protection lock before a kind of large size plastic jetting-moulding device is automatic Download PDFInfo
- Publication number
- CN106965399A CN106965399A CN201710361933.7A CN201710361933A CN106965399A CN 106965399 A CN106965399 A CN 106965399A CN 201710361933 A CN201710361933 A CN 201710361933A CN 106965399 A CN106965399 A CN 106965399A
- Authority
- CN
- China
- Prior art keywords
- automatic
- large size
- actuating cylinder
- moulding device
- safety door
- 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
Links
- 238000000465 moulding Methods 0.000 title claims abstract description 28
- 238000002347 injection Methods 0.000 claims abstract description 27
- 239000007924 injection Substances 0.000 claims abstract description 27
- 230000004888 barrier function Effects 0.000 claims abstract description 9
- 230000009286 beneficial effect Effects 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 238000004590 computer program Methods 0.000 description 1
- 230000007812 deficiency Effects 0.000 description 1
- 230000003111 delayed effect Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 230000005611 electricity Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- NJPPVKZQTLUDBO-UHFFFAOYSA-N novaluron Chemical compound C1=C(Cl)C(OC(F)(F)C(OC(F)(F)F)F)=CC=C1NC(=O)NC(=O)C1=C(F)C=CC=C1F NJPPVKZQTLUDBO-UHFFFAOYSA-N 0.000 description 1
Classifications
-
- 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
- B29C45/00—Injection moulding, i.e. forcing the required volume of moulding material through a nozzle into a closed mould; Apparatus therefor
- B29C45/17—Component parts, details or accessories; Auxiliary operations
- B29C45/84—Safety devices
Landscapes
- Engineering & Computer Science (AREA)
- Manufacturing & Machinery (AREA)
- Mechanical Engineering (AREA)
- Injection Moulding Of Plastics Or The Like (AREA)
- Power-Operated Mechanisms For Wings (AREA)
- Lock And Its Accessories (AREA)
Abstract
The invention discloses a kind of automatic preceding safety door mechanical protection lock of large size plastic jetting-moulding device; including adjustable stationary barrier, proximity switch, actuating cylinder, control air valve and manual control module; the proximity switch is arranged on the adjustable stationary barrier and mutually close with the dragging track at injection machine front door; block is provided with the actuating cylinder, the block can block injection machine front door in the presence of the actuating cylinder；The manual control module includes closing start button, actuating cylinder described in the pass start button and proximity switch co- controlling；The actuating cylinder is used for the work for controlling the actuating cylinder.Safety door is closed, closes the action such as mould automatically automatically before safety door mechanical protection lock can prevent large size plastic jetting-moulding device automatic before the large size plastic jetting-moulding device of the present invention is automatic, so as to avoid the workman in injection on-line operation from occurring life security accident, protects the life security of workman.
Description
Technical field
The present invention relates to injection machine field, a kind of automatic preceding safety door mechanical protection lock of large size plastic jetting-moulding device is specifically related to.
Background technology
Safety door own wt is very heavy before large size plastic jetting-moulding device, in order to mitigate operator's open and close door action labor intensity, a lot
Injection machine producer all devises the automatic preceding safety door of servomotor driving.Servomotor driving automatic preceding safety door sometimes because
For injection machine computer program entanglement, automatic preceding safety door " startup of closing the door " button failure, automatic preceding safe gate driver and servo
Motor is out of control, wait a variety of electric reasons cause operator also taken inside machine product (large size plastic jetting-moulding device shaped article is too big,
Operator must stand into could taking out product inside machine), in the case of artificially to press " startup of closing the door " button at all, automatically before
The unexpected automatic door-closing action of safety door, and then injection machine can close mould action automatically, so as to trigger operator's body, life security
Accident.
The content of the invention
(1) technical problem to be solved
In view of the deficienciess of the prior art, the present invention provides a kind of large size plastic jetting-moulding device automatic preceding safety door mechanical protection
Lock.
(2) technical scheme
To reach above-mentioned purpose, the invention provides a kind of automatic preceding safety door mechanical protection lock of large size plastic jetting-moulding device, including
Adjustable stationary barrier, proximity switch, actuating cylinder, control air valve and manual control module, the proximity switch are arranged on institute
State on adjustable stationary barrier and mutually close with the dragging track at injection machine front door, block, institute are provided with the actuating cylinder
Injection machine front door can be blocked in the presence of the actuating cylinder by stating block；The manual control module includes closing start button,
Actuating cylinder described in the pass start button and proximity switch co- controlling；The control air valve is used to control the actuating cylinder
Work；
When the proximity switch detects injection machine front door and pass start button release, the proximity switch control
The system control air valve makes the actuating cylinder drive the block to block injection machine front door,
When the pass start button is pressed, control air valve described in button control is moved in the start or stop makes the actuating cylinder band
The block is moved away from injection machine front door.
Further, the manual control module also includes relay, the relay input and the pass start button
Series connection, the relay output end is in parallel with the pass start button.
Further, the manual control module also includes time-delay relay, when the pass start button is pressed, the delay
Relay input is connected, and the time-delay relay output end is used for the break-make of circuit where controlling the pass start button.
Further, the adjustable stationary barrier includes slide rail, perpendicular support and lateral frame, and the perpendicular support is arranged on described
On slide rail, the lateral frame is slidably mounted on the perpendicular support, and transversely arranged screw channel is provided with the lateral frame, described
Perpendicular pedestal upper end is provided with clamping screw, and the clamping screw passes through the screw channel.
Further, the slide rail includes track and the sliding block in orbit that is slidably installed, and the perpendicular support is arranged on described
On sliding block, locking device is provided between the sliding block and the track.
Further, the actuating cylinder and proximity switch are arranged on the lateral frame.
Further, the actuating cylinder is swing clamp cylinder.
Further, the slide rail is dovetail groove slide rail.
(3) beneficial effect
Safety door before safety door mechanical protection lock can prevent large size plastic jetting-moulding device automatic before large size plastic jetting-moulding device of the present invention is automatic
It is automatic to close, close the action such as mould automatically, so as to avoid the workman in injection on-line operation from occurring life security accident, protection workman
Life security.
Brief description of the drawings
Fig. 1 is the structural representation that the automatic preceding safety door mechanical protection of large size plastic jetting-moulding device of the present invention locks a direction；
Fig. 2 is the structural representation that the automatic preceding safety door mechanical protection of large size plastic jetting-moulding device of the present invention locks another direction；
Fig. 3 is the circuit theory diagrams of the automatic preceding safety door mechanical protection lock of large size plastic jetting-moulding device of the present invention.
Wherein, 1 is slide rail, and 2 be perpendicular support, and 3 be lateral frame, and 4 be proximity switch, and 5 be actuating cylinder, and 6 be block, and 7 are
Time-delay relay, 8 be relay, and 9 is close start button, and 10 be control air valve, and 11 be screw channel, and 12 be locking device, and 13 be lock
Tight bolt.
Embodiment
With reference to the accompanying drawings and examples, the embodiment to the present invention is described in further detail.Implement below
Example is used to illustrate the present invention, but is not limited to the scope of the present invention.
Before a kind of large size plastic jetting-moulding device of the present invention is automatic the structure of safety door mechanical protection lock as depicted in figs. 1 and 2, including
Adjustable stationary barrier, proximity switch 4, actuating cylinder 5, control air valve 10 and manual control module, the proximity switch 4 are installed
It is on the adjustable stationary barrier and mutually close with the dragging track at injection machine front door, it is provided with gear on the actuating cylinder 5
Block 6, the block 6 can block injection machine front door in the presence of the actuating cylinder 5；The manual control module includes start or stop
Dynamic button 9, actuating cylinder 5 described in the pass start button 9 and the co- controlling of proximity switch 4；The control air valve 10 is used to control
Make the work of the actuating cylinder 5.
In the present embodiment, the manual control module also includes relay 8, and the input of relay 8 is closed with described
Start button 9 is connected, and the output end of relay 8 is in parallel with the pass start button 9.Above structure constitutes oneself of relay 8
Holding circuit.
In the present embodiment, the manual control module also includes time-delay relay 7, when the pass start button 9 is pressed,
The input of time-delay relay 7 is connected, and the output end of time-delay relay 7 is used to control electricity where the pass start button 9
The break-make on road.Time-delay relay 9, which is used to be delayed, disconnects the power supply of relay 8.
In the present embodiment, the adjustable stationary barrier includes slide rail 1, perpendicular support 2 and lateral frame 3, the perpendicular support 2
On the slide rail 1, the lateral frame 3 is slidably mounted on the perpendicular support 2, and transverse direction is provided with the lateral frame 3
The screw channel 11 of arrangement, the perpendicular upper end of support 2 is provided with clamping screw 13, and the clamping screw 13 passes through the screw channel 22.Institute
State actuating cylinder 5 and proximity switch 4 is arranged on the lateral frame 3.
In the present embodiment, the slide rail 1 includes track and the sliding block in orbit that is slidably installed, and the perpendicular support 2 is pacified
On the sliding block, locking device 12 is provided between the sliding block and the track.
The position of the convenient adjustment proximity switch 4 of above structure, so that the present invention is applied to the injection machine of various sizes.
In the present embodiment, the actuating cylinder 5 is swing clamp cylinder.
In the present embodiment, the slide rail 1 is dovetail groove slide rail.
Fig. 3 is the circuit theory body of the automatic preceding safety door mechanical protection lock of large size plastic jetting-moulding device of the present invention.In figure KA represent after
Electrical equipment, KT represents time-delay relay, and SB represents to close start button, and Q represents to control air valve, and J represents proximity switch.Pressed when start or stop is dynamic
When button is not pressed, injection machine front door is connected close proximity to switch, proximity switch, so that control air valve is connected, and then is controlled dynamic
Make the locked injection machine front door of cylinder.When pass start button is pressed, relay is connected, and relay constitutes self-hold circuit, now
Start button is closed even if unclamping, relay is also remained turned on.Time-delay relay is connected after relay is connected, when delay relay
After device is connected, the power supply of cutting-off controlling air valve, and disconnect the power supply of relay after a certain time at once.
It can be realized by above circuit：
When the proximity switch detects injection machine front door and pass start button release, the proximity switch control
The system control air valve makes the actuating cylinder drive the block to block injection machine front door,
When the pass start button is pressed, control air valve described in button control is moved in the start or stop makes the actuating cylinder band
The block is moved away from injection machine front door.
And the effect carried out with automatic cycle.
Beneficial effects of the present invention：Safety door is closed automatically before large size plastic jetting-moulding device can be prevented automatic, to close mould etc. automatically dynamic
Make, so as to avoid the workman in injection on-line operation from occurring life security accident, protect the life security of workman.
Described above is only the preferred embodiment of the present invention, it is noted that for the ordinary skill people of the art
For member, without departing from the technical principles of the invention, some improvements and modifications can also be made, these improvements and modifications
Also it should be regarded as protection scope of the present invention.
Claims (8)
- Safety door mechanical protection lock before 1. a kind of large size plastic jetting-moulding device is automatic, it is characterised in that including adjustable stationary barrier, approach (4), actuating cylinder (5), control air valve (10) and manual control module are switched, the proximity switch (4) is arranged on described adjustable It is on section fixed support and mutually close with the dragging track at injection machine front door, it is provided with block (6), institute on the actuating cylinder (5) Injection machine front door can be blocked in the presence of the actuating cylinder (5) by stating block (6)；The manual control module is dynamic including start or stop Button (9), actuating cylinder (5) described in described pass start button (9) and proximity switch (4) co- controlling；The control air valve (10) it is used for the work for controlling the actuating cylinder (5)；When the proximity switch (4) detects injection machine front door and the pass start button (10) release, described approach is opened Closing (4) control control air valve (10) makes the actuating cylinder (5) drive the block (6) to block injection machine front door,When the pass start button (9) is pressed, pass start button (9) the control control air valve (10) makes the action Cylinder (5) drives the block (6) away from injection machine front door.
- Safety door mechanical protection lock before 2. large size plastic jetting-moulding device as claimed in claim 1 is automatic, it is characterised in that the manual control Molding block also includes relay (8), and relay (8) input is connected with the pass start button (9), the relay (8) output end is in parallel with the pass start button (9).
- Safety door mechanical protection lock before 3. large size plastic jetting-moulding device as claimed in claim 2 is automatic, it is characterised in that the manual control Molding block also includes time-delay relay (7), when the pass start button (9) is pressed, time-delay relay (7) the input termination Logical, time-delay relay (7) output end is used for the break-make of circuit where controlling the pass start button (9).
- Safety door mechanical protection lock before 4. large size plastic jetting-moulding device as claimed in claim 3 is automatic, it is characterised in that described adjustable Fixed support includes slide rail (1), perpendicular support (2) and lateral frame (3), and the perpendicular support (2) is arranged on the slide rail (1), institute State lateral frame (3) to be slidably mounted on the perpendicular support (2), transversely arranged screw channel (11) be provided with the lateral frame (3), Perpendicular support (2) upper end is provided with clamping screw (13), and the clamping screw (13) passes through the screw channel (11).
- Safety door mechanical protection lock before 5. large size plastic jetting-moulding device as claimed in claim 4 is automatic, it is characterised in that the slide rail (1) include track and be slidably installed sliding block in orbit, the perpendicular support (2) is arranged on the sliding block, the sliding block with Locking device (12) is provided between the track.
- Safety door mechanical protection lock before 6. large size plastic jetting-moulding device as claimed in claim 4 is automatic, it is characterised in that the action gas Cylinder (5) and proximity switch (4) are arranged on the lateral frame (3).
- Safety door mechanical protection lock before 7. large size plastic jetting-moulding device as claimed in claim 1 is automatic, it is characterised in that the action gas Cylinder (5) is swing clamp cylinder.
- Safety door mechanical protection lock before 8. large size plastic jetting-moulding device as claimed in claim 1 is automatic, it is characterised in that the slide rail (1) it is dovetail groove slide rail.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710361933.7A CN106965399A (en) | 2017-05-22 | 2017-05-22 | Safety door mechanical protection lock before a kind of large size plastic jetting-moulding device is automatic |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710361933.7A CN106965399A (en) | 2017-05-22 | 2017-05-22 | Safety door mechanical protection lock before a kind of large size plastic jetting-moulding device is automatic |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN106965399A true CN106965399A (en) | 2017-07-21 |
Family
ID=59326481
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201710361933.7A Pending CN106965399A (en) | 2017-05-22 | 2017-05-22 | Safety door mechanical protection lock before a kind of large size plastic jetting-moulding device is automatic |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN106965399A (en) |
Citations (22)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH0584800A (en) * | 1991-06-05 | 1993-04-06 | Niigata Eng Co Ltd | Safety device of injection molding machine |
| JPH07214630A (en) * | 1994-01-27 | 1995-08-15 | Fanuc Ltd | Injection molding machine |
| CN2313285Y (en) * | 1996-06-29 | 1999-04-07 | 张成松 | Circuit breaker, coincidence valve imitation instrument |
| JP2002264194A (en) * | 2001-03-14 | 2002-09-18 | Meiki Co Ltd | Safety device of electromotive injection molding machine |
| JP2004090541A (en) * | 2002-09-03 | 2004-03-25 | Meiki Co Ltd | Safety door of molding machine and control process of the same |
| CN2706808Y (en) * | 2004-05-19 | 2005-06-29 | 庞维克 | Open-gate inhibition illegal entrance alarm |
| JP2010036386A (en) * | 2008-08-01 | 2010-02-18 | Toyo Mach & Metal Co Ltd | Machine tool with safety door switching control mechanism and injection molding machine or die casting machine |
| CN201436193U (en) * | 2009-06-19 | 2010-04-07 | 佛山市顺德区震德塑料机械有限公司 | Gate of injection machine |
| CN201712144U (en) * | 2010-06-11 | 2011-01-19 | 滕武超 | Safety door of injection molding machine |
| CN201794405U (en) * | 2010-09-16 | 2011-04-13 | 浙江申达机器制造股份有限公司 | Protective sliding door self-locking mechanism of electric injection molding machine |
| CN202357403U (en) * | 2011-08-12 | 2012-08-01 | 浙江国祥机器人科技有限公司 | Relay interlock in manipulator controller of injection molding machine |
| CN202432074U (en) * | 2011-12-08 | 2012-09-12 | 长沙精达印刷制版有限公司 | Water-saving control circuit |
| CN202491396U (en) * | 2012-03-29 | 2012-10-17 | 宁波海太工贸有限公司 | Door opening device of injection molding machine |
| CN202788299U (en) * | 2012-08-27 | 2013-03-13 | 帝兴树脂(昆山)有限公司 | Oven safety door system |
| CN202826328U (en) * | 2012-09-21 | 2013-03-27 | 海天塑机集团有限公司 | Mechanical safety device of injection moulding machine |
| CN203050272U (en) * | 2012-11-22 | 2013-07-10 | 博创机械股份有限公司 | Electrically controlled lock device for front safety door |
| CN203409998U (en) * | 2013-07-22 | 2014-01-29 | 宁波市海达塑料机械有限公司 | Safety circuit of plastic injection machine |
| CN205021946U (en) * | 2015-10-13 | 2016-02-10 | 中山市海腾机械有限公司 | Order travel switch emergency exit system |
| CN105927778A (en) * | 2016-06-30 | 2016-09-07 | 苏州热工研究院有限公司 | Control circuit for motorized isolation valve of nuclear power plant |
| CN206154672U (en) * | 2016-09-13 | 2017-05-10 | 广东伊之密精密注压科技有限公司 | Interlocking protector of injection molding machine emergency exit |
| CN206159803U (en) * | 2016-10-12 | 2017-05-10 | 中石化南京工程有限公司 | Straight oil flow pump power components configuration |
| CN207128230U (en) * | 2017-05-22 | 2018-03-23 | 徐振勇 | A kind of large size plastic jetting-moulding device automatically lock by preceding safety door mechanical protection |
-
2017
- 2017-05-22 CN CN201710361933.7A patent/CN106965399A/en active Pending
Patent Citations (22)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH0584800A (en) * | 1991-06-05 | 1993-04-06 | Niigata Eng Co Ltd | Safety device of injection molding machine |
| JPH07214630A (en) * | 1994-01-27 | 1995-08-15 | Fanuc Ltd | Injection molding machine |
| CN2313285Y (en) * | 1996-06-29 | 1999-04-07 | 张成松 | Circuit breaker, coincidence valve imitation instrument |
| JP2002264194A (en) * | 2001-03-14 | 2002-09-18 | Meiki Co Ltd | Safety device of electromotive injection molding machine |
| JP2004090541A (en) * | 2002-09-03 | 2004-03-25 | Meiki Co Ltd | Safety door of molding machine and control process of the same |
| CN2706808Y (en) * | 2004-05-19 | 2005-06-29 | 庞维克 | Open-gate inhibition illegal entrance alarm |
| JP2010036386A (en) * | 2008-08-01 | 2010-02-18 | Toyo Mach & Metal Co Ltd | Machine tool with safety door switching control mechanism and injection molding machine or die casting machine |
| CN201436193U (en) * | 2009-06-19 | 2010-04-07 | 佛山市顺德区震德塑料机械有限公司 | Gate of injection machine |
| CN201712144U (en) * | 2010-06-11 | 2011-01-19 | 滕武超 | Safety door of injection molding machine |
| CN201794405U (en) * | 2010-09-16 | 2011-04-13 | 浙江申达机器制造股份有限公司 | Protective sliding door self-locking mechanism of electric injection molding machine |
| CN202357403U (en) * | 2011-08-12 | 2012-08-01 | 浙江国祥机器人科技有限公司 | Relay interlock in manipulator controller of injection molding machine |
| CN202432074U (en) * | 2011-12-08 | 2012-09-12 | 长沙精达印刷制版有限公司 | Water-saving control circuit |
| CN202491396U (en) * | 2012-03-29 | 2012-10-17 | 宁波海太工贸有限公司 | Door opening device of injection molding machine |
| CN202788299U (en) * | 2012-08-27 | 2013-03-13 | 帝兴树脂(昆山)有限公司 | Oven safety door system |
| CN202826328U (en) * | 2012-09-21 | 2013-03-27 | 海天塑机集团有限公司 | Mechanical safety device of injection moulding machine |
| CN203050272U (en) * | 2012-11-22 | 2013-07-10 | 博创机械股份有限公司 | Electrically controlled lock device for front safety door |
| CN203409998U (en) * | 2013-07-22 | 2014-01-29 | 宁波市海达塑料机械有限公司 | Safety circuit of plastic injection machine |
| CN205021946U (en) * | 2015-10-13 | 2016-02-10 | 中山市海腾机械有限公司 | Order travel switch emergency exit system |
| CN105927778A (en) * | 2016-06-30 | 2016-09-07 | 苏州热工研究院有限公司 | Control circuit for motorized isolation valve of nuclear power plant |
| CN206154672U (en) * | 2016-09-13 | 2017-05-10 | 广东伊之密精密注压科技有限公司 | Interlocking protector of injection molding machine emergency exit |
| CN206159803U (en) * | 2016-10-12 | 2017-05-10 | 中石化南京工程有限公司 | Straight oil flow pump power components configuration |
| CN207128230U (en) * | 2017-05-22 | 2018-03-23 | 徐振勇 | A kind of large size plastic jetting-moulding device automatically lock by preceding safety door mechanical protection |
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| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20170721 |
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| RJ01 | Rejection of invention patent application after publication |