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CN114682707B - Punch press with protective structure - Google Patents

Punch press with protective structure Download PDF

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Publication number
CN114682707B
CN114682707B CN202210323049.5A CN202210323049A CN114682707B CN 114682707 B CN114682707 B CN 114682707B CN 202210323049 A CN202210323049 A CN 202210323049A CN 114682707 B CN114682707 B CN 114682707B
Authority
CN
China
Prior art keywords
matched
shell
pedal
sliding
positioning rod
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.)
Active
Application number
CN202210323049.5A
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Chinese (zh)
Other versions
CN114682707A (en
Inventor
张嵩
应颂
杨辉
陈勇良
项华佳
吕时广
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.)
Zhejiang Jinaolan Machine Tool Co ltd
Original Assignee
Zhejiang Jinaolan Machine Tool 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 Zhejiang Jinaolan Machine Tool Co ltd filed Critical Zhejiang Jinaolan Machine Tool Co ltd
Priority to CN202210323049.5A priority Critical patent/CN114682707B/en
Publication of CN114682707A publication Critical patent/CN114682707A/en
Application granted granted Critical
Publication of CN114682707B publication Critical patent/CN114682707B/en
Active legal-status Critical Current
Anticipated expiration legal-status Critical

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Classifications

    • BPERFORMING OPERATIONS; TRANSPORTING
    • B21MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21DWORKING OR PROCESSING OF SHEET METAL OR METAL TUBES, RODS OR PROFILES WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21D55/00Safety devices protecting the machine or the operator, specially adapted for apparatus or machines dealt with in this subclass
    • 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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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Mechanical Control Devices (AREA)

Abstract

The invention discloses a punch press with a protective structure, which comprises a machine body and a protective cover arranged on the machine body, wherein a movable foot switch device is arranged on the machine body, a positioning rod is arranged on the machine body, and the foot switch device is rotationally arranged on the positioning rod; the protective cover is provided with a first piston, and the positioning rod is provided with a first cylinder body matched with the first piston; the pedal switch device comprises a shell and a pedal movably arranged in the shell, a second cylinder body matched with the first cylinder body is arranged on the shell, a movable piston rod is arranged on the second cylinder body, a sliding block which is matched with the piston rod and the pedal and can lock or unlock the pedal is arranged in the shell, and a groove body matched with the piston rod is arranged on the sliding block.

Description

Punch press with protective structure
Technical Field
The invention relates to the technical field of punching machines, in particular to a punching machine with a protection structure.
Background
A punch press is a common production device, which is generally used for punching various plates and dies, and the parts are formed by punching with a punch; the existing punching machine is usually open for placing blanks conveniently, safety accidents are easy to occur when the foot switch is in false touch, the foot switch is usually fixed, namely, a single point is fixed at a certain position around the punching machine, at the moment, when the blank needs to be punched, the punching machine cannot be started due to the fact that the foot switch is far away from an operator, and meanwhile, the foot switch needs to be at a stable treading position when treading, so that the punching machine is stable and safe.
Disclosure of Invention
Aiming at the defects in the prior art, the invention provides a punch with a protection structure.
In order to solve the technical problems, the invention is solved by the following technical scheme: a punch press with a protective structure comprises a machine body and a protective cover arranged on the machine body.
In the above scheme, preferably, the machine body is provided with a movable foot switch device, the machine body is provided with a positioning rod, and the foot switch device is rotationally arranged on the positioning rod;
the protective cover is provided with a first piston, and the positioning rod is provided with a first cylinder body matched with the first piston;
the pedal switch device comprises a shell and a pedal movably arranged in the shell, a second cylinder body matched with the first cylinder body is arranged on the shell, a movable piston rod is arranged on the second cylinder body, a sliding block which is matched with the piston rod and the pedal and can lock or unlock the pedal is arranged in the shell, and a groove body matched with the piston rod is arranged on the sliding block.
In the above scheme, preferably, the slider is slidably disposed on the housing, a guide plate is disposed on the slider, a guide pin is disposed at one end of the guide plate, a locking pin matched with the pedal is disposed at the other end of the guide plate, and a first spring is disposed between the guide plate and the housing.
In the above scheme, preferably, the groove body is a chute which is inclined from injury downwards to one side close to the pedal, the piston rod is provided with a sliding pin matched with the groove body, and the pedal is provided with a locking hole matched with the locking pin.
In the above scheme, preferably, the shell is rotatably arranged on the positioning rod through the connecting rod, the connecting rod is provided with a rotating ring matched with the positioning rod, the rotating ring is provided with a first tooth part, and the positioning rod is provided with a rotating groove matched with the rotating ring.
In the above scheme, preferably, the positioning rod is provided with a sliding ring matched with the rotating ring, the sliding ring is provided with a second tooth part matched with the first tooth part, a second spring is arranged between the sliding ring and the positioning rod, and the sliding ring is provided with a first electromagnet capable of adsorbing the rotating ring.
In the above scheme, preferably, the shell is provided with a door plate, a first button matched with the door plate is arranged in the shell, and the first button is connected with the first electromagnetic iron.
In the above scheme, preferably, the protection cover is slidably arranged on the machine body, a third spring is arranged between the protection cover and the machine body, and a first pin block matched with the machine body is arranged at the lower end of the protection cover.
In the above scheme, preferably, the machine body is provided with a second pin block matched with the first pin block, the second pin block is slidably arranged on the machine body, a fourth spring is arranged between the second pin block and the machine body, the first pin block is provided with a first inclined plane, and the second pin block is provided with a second inclined plane matched with the first inclined plane.
In the above scheme, preferably, the second pin block is connected with the magnetic attraction block through the connecting rod, be equipped with on the fuselage with connecting rod matched with mounting panel, be equipped with the second electro-magnet that can switch on the absorption magnetic attraction block on the fuselage, be equipped with in the casing with footboard matched with second button, second button is connected with second electromagnetism ferroelectric.
The beneficial effects of the invention are as follows: the invention provides a device which can lock the pedal by the linkage of the protective cover and the pedal switch when the protective cover is not closed, so that the stamping safety is greatly improved, the position of the pedal switch can be locked when an operator uses the pedal switch, and the stamping stability is improved.
Drawings
Fig. 1 is a schematic perspective view of the present invention.
FIG. 2 is a schematic cross-sectional view of the present invention.
Fig. 3 is an enlarged schematic view of the structure of the present invention at a.
Fig. 4 is a schematic diagram of a mating structure of the first pin block and the second pin block according to the present invention.
Fig. 5 is a schematic perspective view of a positioning rod according to the present invention.
FIG. 6 is a schematic view of a housing and a rotary ring according to the present invention.
Fig. 7 is a schematic view of a partial perspective structure of a pedal of the present invention.
Fig. 8 is a schematic perspective view of a slider according to the present invention.
Detailed Description
The invention is described in further detail below with reference to the attached drawings and detailed description: referring to fig. 1-8, a punch press with protective structure, including fuselage 1 and locate its last protection casing 2, protection casing 2 is located on the punch press fuselage 1 through the slide rail slip, be equipped with the handle that can supply operating personnel to draw on the protection casing 2, can set up the observation window on the protection casing 2, be convenient for run through the punching press state.
A third spring 51 is arranged between the upper end surface of the protective cover 2 and the upper part of the punch press machine body 1, the third spring 51 is an extension spring, and two ends of the third spring 51 are fixedly connected with the upper ends of the machine body 1 and the protective cover 2 respectively, namely, when the protective cover 2 slides downwards along a sliding rail, the third spring 51 is extended; the bottom of the rear end face of the protective cover 2 is fixedly provided with a first pin block 52, the first pin block 52 is provided with a first inclined plane 55, the first inclined plane 55 extends to one side of the protective cover 2 from top to bottom, the machine body 1 is provided with a second pin block 53 matched with the first pin block 52, the second pin block 53 is provided with a second inclined plane 56 matched with the first inclined plane 55, and the second inclined plane 56 extends to one side close to the protective cover 2 from top to bottom.
The second pin block 53 is provided with a connecting rod 61, the connecting rod 61 is preferably a non-round rod, a square rod or a hexagonal rod can be adopted, the machine body 1 is provided with a mounting plate 63 matched with the connecting rod 61, the mounting plate 63 is provided with a sliding hole matched with the connecting rod 61 in shape, namely the connecting rod 61 is arranged in a sliding penetrating way through the mounting plate 63; a fourth spring 54 is arranged between the second pin block 53 and the mounting plate 63, the fourth spring 54 is sleeved on the connecting rod 61, and two ends of the fourth spring are respectively propped against the second pin block 53 and the mounting plate 63.
The connecting rod 61 is fixedly provided with a magnetic attraction block 62 after penetrating through the mounting plate 63, the machine body 1 is provided with a second electromagnet 64 which can be electrified to attract the magnetic attraction block 62 and enable the magnetic attraction block 62 to slide due to magnetic force, and a certain distance is reserved between the second electromagnet 64 and the magnetic attraction block 62 when the second electromagnet 64 is not electrified.
The machine body 1 is fixedly provided with a positioning rod 3, the positioning rod 3 is preferably a hexagonal rod, the upper end of the positioning rod 3 is fixedly provided with a first cylinder body 5, the upper end of the first cylinder body 5 is provided with an opening, the lower outer wall of the lower part of the positioning rod is provided with an air outlet 101, the protective cover 2 is provided with a first piston 4 matched with the inner hole wall of the first cylinder body 5, namely, the protective cover 2 can be placed in the first cylinder body 5 after sliding downwards, and gas of the first cylinder body 5 is compressed to flush the air outlet 101 and discharge the gas.
The lower extreme rotation of locating lever 3 is equipped with foot switch device, foot switch device includes casing 11 and rotates locates its inside footboard 12, the setting that the rotation of footboard 12 and trample the back and reset is prior art, does not expand the description here, casing 11 bottom is equipped with footboard 12 matched with second button 65, and pedal 12 tramples the rotation back and contacts with second button 65 and trigger second button 65 promptly, second button 65 is the time delay button, second button 65 links to each other with second electro-magnet 64 through the cable.
The upper end face of the shell 11 is provided with a second cylinder body 13 matched with the first cylinder body 5, and the upper end face of the second cylinder body 13 is provided with an air inlet hole connected with the air outlet hole 101, namely, the air of the first cylinder body 5 can be discharged through the air outlet hole 101 after being compressed and then enter the second cylinder body 13.
The movable piston rod 14 is arranged in the second cylinder 13, the end part of the piston rod 14 is arranged in the shell 11 after penetrating through the upper end surface of the shell 11, the end part of the piston rod 14 is fixedly provided with a sliding pin 25, two ends of the sliding pin 25 are provided with connecting plates connected with the end part of the piston rod 14, the shell 11 is internally provided with a sliding block 15 matched with the pedal 12, as shown in fig. 7, the sliding block 15 is provided with a groove body 16 matched with the sliding pin 25, the groove body 16 inclines to the side close to the pedal 12 from top to bottom, the left end of the sliding block 15 is fixedly provided with a guide plate 21, the left end surface of the guide plate 21 is provided with a guide pin 22, the guide pins 22 are symmetrically arranged on two sides of the sliding block 15, the guide pin 22 slides through the left shell wall of the shell 11, a first spring 24 is arranged between the guide plate 21 and the shell 11, and the first spring 24 is sleeved on the guide pin 22, and two ends of the first spring are respectively abutted against the guide plate 21 and the shell 11.
The right end face of the guide plate 21 is symmetrically provided with a locking pin 23, the locking pin 23 is arranged in a way of sliding through a locking hole 26 of the pedal 12, namely when the first spring 24 is in a free stretching state, the guide plate 21 slides rightwards to enable the locking pin 23 to slide into the locking hole 26, the pedal 12 cannot be stepped on, after the second cylinder 13 is ventilated, the piston rod 14 is pressed down, at the moment, the groove 16 on the sliding block 15 enables the sliding block 15 to compress the first spring 24 leftwards due to the extrusion force of the sliding pin 25, the locking pin 23 slides out of the locking hole 26, and at the moment, the pedal 12 is unlocked and can be stepped on.
The shell 11 is connected with a rotating ring 32 through a connecting rod 31, the rotating ring 32 is rotationally arranged below the positioning rod 3, a rotating groove 34 matched with the rotating ring 32 is arranged below the positioning rod 3, namely, the rotating ring 32 is rotationally sleeved in the rotating groove 34, a first protruding tooth part 33 is arranged on the upper end face of the rotating ring 32, a sliding ring 35 is slidingly arranged on the positioning rod 31, the sliding ring 35 is arranged above the rotating ring 32, a hole body matched with the positioning rod 3 is arranged in the sliding ring 35, namely, the positioning rod 3 adopts a hexagonal rod, a hexagonal hole is formed in the sliding ring 35, and the sliding ring 35 can only slide on the positioning rod 3 but cannot rotate relatively.
The lower end of the sliding ring 35 is provided with a second tooth part 36 matched with the first tooth part 33, namely, the sliding ring 35 can be meshed with the first tooth part 33 with the second tooth part 36 after sliding downwards, the positioning rod 3 is provided with a limiting plate 102, a second spring 37 is arranged between the limiting plate 102 and the sliding ring 35, the second spring 37 is sleeved on the positioning rod 3, and two ends of the second spring are respectively propped against the sliding ring 35 and the limiting plate 102.
The outer ring of the sliding ring 35 is provided with a first electromagnet 38, and the first electromagnet 38 can slide to be adsorbed with the outer ring of the rotating ring 32 after being electrified.
The door plate 41 is arranged at the opening of the shell 11, the door plate 41 is rotatably arranged on the shell 11, a rotation fulcrum of the door plate 41 is arranged at the upper side of the shell 11, a first button 42 matched with the door plate 41 is arranged at the inner wall of the upper side of the shell 11, the first button 42 is electrically connected with the first electromagnet 38, namely, the door plate 41 can be triggered by contacting with the first button 42 of the inner wall of the upper side of the shell 11 after being turned inwards, so that the first electromagnet 38 is electrified, the door plate 41 is more reasonably arranged, the shape of the door plate 41 is preferably an arc protruding towards the outer side of the shell 11, and when the door plate 41 is not stressed, the door plate 41 is freely hung at the opening of the shell 11 due to self gravity.
The method for using the punch with the protective structure comprises the following steps: when the protective cover 2 is not slid down in use, i.e. the protective cover 2 does not play a protective role, an operator may possibly generate a safety accident due to the fact that the protective cover is not protected in place, at this time, the pedal 12 is locked above under the cooperation of the locking pin 23 and the first spring 24, and the operator cannot step on the pedal if stepping on the pedal by mistake; when the protective cover 2 slides down to a position with a protective effect, the first piston 4 is matched with the first cylinder 5, so that gas in the first cylinder 5 is compressed and introduced into the second cylinder 13, the second cylinder 13 is inflated, the piston rod 14 is pushed down to push the sliding pin 25 in the groove 16, the sliding block 15 is guided by the guide pin 22, the sliding block 15 slides leftwards when the groove 16 is extruded, the sliding block 15 slides leftwards to drive the locking pin 23 to be separated from the pedal 12, the pedal 12 can be stepped on, meanwhile, the protective cover 2 slides downwards, the first pin block 52 is pressed by the second pin block 53 to be placed below the second pin block 53, namely, the protective cover 2 is locked at the protective position, when an operator needs to pedal the pedal 12, the operator stretches feet into the shell 11, the feet drive the door plate 41 to trigger the first button 42 when stretching in, the first button 42 is triggered, the first electromagnet 38 slides downwards to be meshed with the tooth part on the sliding ring 32 at the moment, the shell 11 cannot be meshed with the rotating ring 32 because the sliding ring 35 is meshed with the rotating ring 32, namely, the shell 11 is stably stepped on by the pedal 12, and the pedal body is stably stepped on by the operator, and the pedal body is stably stepped on the pedal 1 when the pedal is also controlled to be stepped on by the operator.
The above embodiments are only for illustrating the technical solution of the present invention, and are not limiting; although the invention has been described in detail with reference to the foregoing embodiments, it will be understood by those of ordinary skill in the art that: the technical scheme described in the foregoing embodiments can be modified or some technical features thereof can be replaced by equivalents; such modifications and substitutions do not depart from the spirit and scope of the technical solutions of the embodiments of the present invention.

Claims (8)

1. The utility model provides a punch press with protective structure, includes fuselage (1) and locates protection casing (2) on it, its characterized in that: the machine body (1) is provided with a movable foot switch device, the machine body (1) is provided with a positioning rod (3), and the foot switch device is rotationally arranged on the positioning rod (3);
the protective cover (2) is provided with a first piston (4), and the positioning rod (3) is provided with a first cylinder body (5) matched with the first piston (4);
the pedal switch device comprises a shell (11) and a pedal (12) movably arranged in the shell, a second cylinder body (13) matched with the first cylinder body (5) is arranged on the shell (11), a movable piston rod (14) is arranged on the second cylinder body (13), a sliding block (15) matched with the piston rod (14) and the pedal (12) and capable of locking or unlocking the pedal (12) is arranged in the shell (11), and a groove body (16) matched with the piston rod (14) is arranged on the sliding block (15).
2. The punch with protective structure of claim 1, wherein: the sliding block (15) is arranged on the shell (11) in a sliding mode, a guide plate (21) is arranged on the sliding block (15), a guide pin (22) is arranged at one end of the guide plate (21), a locking pin (23) matched with the pedal (12) is arranged at the other end of the guide plate, and a first spring (24) is arranged between the guide plate (21) and the shell (11).
3. The punch with protective structure of claim 2, wherein: the groove body (16) is a chute which is inclined from top to bottom to the side close to the pedal (12), the piston rod (14) is provided with a sliding pin (25) matched with the groove body (16), and the pedal (12) is provided with a locking hole (26) matched with the locking pin (23).
4. The punch with protective structure of claim 1, wherein: the shell (11) is rotationally arranged on the positioning rod (3) through a connecting rod (31), a rotating ring (32) matched with the positioning rod (3) is arranged on the connecting rod (31), a first tooth part (33) is arranged on the rotating ring (32), and a rotating groove (34) matched with the rotating ring (32) is arranged on the positioning rod (3);
the positioning rod (3) is provided with a sliding ring (35) matched with the rotating ring (32), the sliding ring (35) is provided with a second tooth part (36) matched with the first tooth part (33), a second spring (37) is arranged between the sliding ring (35) and the positioning rod (3), and the sliding ring (35) is provided with a first electromagnet (38) capable of adsorbing the rotating ring (32).
5. The punch with protective structure of claim 4, wherein: the shell (11) is provided with a door plate (41), a first button (42) matched with the door plate (41) is arranged in the shell (11), and the first button (42) is electrically connected with the first electromagnet (38).
6. The punch with protective structure of claim 1, wherein: the protective cover (2) is arranged on the machine body (1) in a sliding mode, a third spring (51) is arranged between the protective cover (2) and the machine body (1), and a first pin block (52) matched with the machine body (1) is arranged at the lower end of the protective cover (2).
7. The punch with protective structure of claim 6, wherein: be equipped with on fuselage (1) with first round pin piece (52) matched with second round pin piece (53), second round pin piece (53) slide and locate on fuselage (1), be equipped with fourth spring (54) between second round pin piece (53) and fuselage (1), be equipped with first inclined plane (55) on first round pin piece (52), be equipped with on second round pin piece (53) with first inclined plane (55) matched with second inclined plane (56).
8. The punch with protective structure of claim 7, wherein: the second pin block (53) is connected with a magnetic attraction block (62) through a connecting rod (61), a mounting plate (63) matched with the connecting rod (61) is arranged on the machine body (1), a second electromagnet (64) capable of electrically adsorbing the magnetic attraction block (62) is arranged on the machine body (1), a second button (65) matched with the pedal (12) is arranged in the shell (11), and the second button (65) is electrically connected with the second electromagnet (64).
CN202210323049.5A 2022-03-30 2022-03-30 Punch press with protective structure Active CN114682707B (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN202210323049.5A CN114682707B (en) 2022-03-30 2022-03-30 Punch press with protective structure

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN202210323049.5A CN114682707B (en) 2022-03-30 2022-03-30 Punch press with protective structure

Publications (2)

Publication Number Publication Date
CN114682707A CN114682707A (en) 2022-07-01
CN114682707B true CN114682707B (en) 2023-09-08

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Application Number Title Priority Date Filing Date
CN202210323049.5A Active CN114682707B (en) 2022-03-30 2022-03-30 Punch press with protective structure

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Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN116475763B (en) * 2023-04-19 2024-03-19 浙江裕融实业股份有限公司 Crusher auxiliary plate production device and production process thereof

Citations (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB119171A (en) * 1918-01-16 1918-09-26 Thomas Henry Webb A Guard for Power Presses, and the like.
GB663074A (en) * 1948-06-02 1951-12-19 Press Guards Ltd Improvements in or relating to guards for power-presses and the like
GB955562A (en) * 1961-10-04 1964-04-15 Thompson Jack Evans Improvements in or relating to guards for machines
CN101722253A (en) * 2008-10-31 2010-06-09 马永涛 Safety protection device of rigid punching machine
CN207787551U (en) * 2018-01-23 2018-08-31 东莞市同益自动化科技有限公司 An electric punching machine malfunction protection device
CN110465574A (en) * 2019-09-09 2019-11-19 浙江金澳兰机床有限公司 Safty shield and its application method on a kind of punching machine
CN112007987A (en) * 2020-07-21 2020-12-01 浙江金澳兰机床有限公司 Punch press with mistaken touch prevention device and using method thereof
CN112024761A (en) * 2020-07-21 2020-12-04 浙江金澳兰机床有限公司 Punch switch locking device and using method thereof
CN212495041U (en) * 2020-01-07 2021-02-09 广东联兴锻压机床实业有限公司 Safety brake device for punch press

Family Cites Families (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB620246A (en) * 1947-01-11 1949-03-22 J B Brooks & Co Ltd Improvements relating to guards for power presses

Patent Citations (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB119171A (en) * 1918-01-16 1918-09-26 Thomas Henry Webb A Guard for Power Presses, and the like.
GB663074A (en) * 1948-06-02 1951-12-19 Press Guards Ltd Improvements in or relating to guards for power-presses and the like
GB955562A (en) * 1961-10-04 1964-04-15 Thompson Jack Evans Improvements in or relating to guards for machines
CN101722253A (en) * 2008-10-31 2010-06-09 马永涛 Safety protection device of rigid punching machine
CN207787551U (en) * 2018-01-23 2018-08-31 东莞市同益自动化科技有限公司 An electric punching machine malfunction protection device
CN110465574A (en) * 2019-09-09 2019-11-19 浙江金澳兰机床有限公司 Safty shield and its application method on a kind of punching machine
CN212495041U (en) * 2020-01-07 2021-02-09 广东联兴锻压机床实业有限公司 Safety brake device for punch press
CN112007987A (en) * 2020-07-21 2020-12-01 浙江金澳兰机床有限公司 Punch press with mistaken touch prevention device and using method thereof
CN112024761A (en) * 2020-07-21 2020-12-04 浙江金澳兰机床有限公司 Punch switch locking device and using method thereof

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