GB2119761A - Automatic work feeder - Google Patents
Automatic work feeder Download PDFInfo
- Publication number
- GB2119761A GB2119761A GB08226672A GB8226672A GB2119761A GB 2119761 A GB2119761 A GB 2119761A GB 08226672 A GB08226672 A GB 08226672A GB 8226672 A GB8226672 A GB 8226672A GB 2119761 A GB2119761 A GB 2119761A
- Authority
- GB
- United Kingdom
- Prior art keywords
- cam
- slide
- transmission mechanism
- press
- power transmission
- 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.)
- Withdrawn
Links
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
- B65H—HANDLING THIN OR FILAMENTARY MATERIAL, e.g. SHEETS, WEBS, CABLES
- B65H3/00—Separating articles from piles
- B65H3/24—Separating articles from piles by pushers engaging the edges of the articles
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21D—WORKING OR PROCESSING OF SHEET METAL OR METAL TUBES, RODS OR PROFILES WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21D43/00—Feeding, positioning or storing devices combined with, or arranged in, or specially adapted for use in connection with, apparatus for working or processing sheet metal, metal tubes or metal profiles; Associations therewith of cutting devices
- B21D43/02—Advancing work in relation to the stroke of the die or tool
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21D—WORKING OR PROCESSING OF SHEET METAL OR METAL TUBES, RODS OR PROFILES WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21D43/00—Feeding, positioning or storing devices combined with, or arranged in, or specially adapted for use in connection with, apparatus for working or processing sheet metal, metal tubes or metal profiles; Associations therewith of cutting devices
- B21D43/02—Advancing work in relation to the stroke of the die or tool
- B21D43/04—Advancing work in relation to the stroke of the die or tool by means in mechanical engagement with the work
- B21D43/10—Advancing work in relation to the stroke of the die or tool by means in mechanical engagement with the work by grippers
- B21D43/105—Manipulators, i.e. mechanical arms carrying a gripper element having several degrees of freedom
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
- B65H—HANDLING THIN OR FILAMENTARY MATERIAL, e.g. SHEETS, WEBS, CABLES
- B65H5/00—Feeding articles separated from piles; Feeding articles to machines
- B65H5/08—Feeding articles separated from piles; Feeding articles to machines by grippers, e.g. suction grippers
- B65H5/10—Reciprocating or oscillating grippers, e.g. suction or gripper tables
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
- B65H—HANDLING THIN OR FILAMENTARY MATERIAL, e.g. SHEETS, WEBS, CABLES
- B65H2301/00—Handling processes for sheets or webs
- B65H2301/40—Type of handling process
- B65H2301/42—Piling, depiling, handling piles
- B65H2301/423—Depiling; Separating articles from a pile
- B65H2301/4232—Depiling; Separating articles from a pile of horizontal or inclined articles, i.e. wherein articles support fully or in part the mass of other articles in the piles
- B65H2301/42322—Depiling; Separating articles from a pile of horizontal or inclined articles, i.e. wherein articles support fully or in part the mass of other articles in the piles from bottom of the pile
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Press Drives And Press Lines (AREA)
Abstract
An automatic work feeding apparatus 12 for use with a press 11 including a slide bar that has a work holding member 23 and which can be reciprocated between two points in the feed direction of the work, a vertically movable holder that holds the slide bar while allowing horizontal movement thereof, a power transmission mechanism 20, 28, 27 to be coupled to the slide 16 or the slide power transmission mechanism 18 of the press so as to be operated in use in synchronism with reciprocating motion of the slide 16, the power transmission mechanism being arranged to rotate a cam shaft 26 in opposite directions, a cam mounted on the cam shaft, two cam mechanisms, one to cause horizontal movement of the work holding member 23 and the other to cause vertical movement thereof, the cam mechanisms being movable in response to a change in the position of the cam face of the cam, and displacement transmission mechanisms arranged to transmit the motion of the cam mechanisms to the slide bar and to the holder 23. <IMAGE>
Description
SPECIFICATION
Automatic work feeder
The present invention relates to an automatic work feeder, and more particularly to an automatic
apparatus for feeding workpieces with a slide drive using as a power source a press.
Conventional automatic feeders use a single
motor as a power source to achieve a twodimensional operation of the wdrkpiece holder that consists of a reciprocal movement between two horizontal positions and a vertical movement at each position. But these feeders are
unavoidably large since they contain either an electric motor or a pneumatic cylinder as a driving
means. To convert the rotation of the motor shaft to the horizontal and vertical reciprocal
movements of the work holder, the first type of feeder has two clutch mechanisms, one for
horizontal movement and the other for vertical
movement, in the path transmitting the power of the motor, and the respective clutches are let in or
let out to control the horizontal and vertical
movements.Therefore, the feeder of the first type
is complex both in construction and timing control and is prone to trouble. The second type of feeder
using a pneumatic cylinder involves difficulty in
controlled switching from horizontal movement to vertical movement and vice versa, and many
expensive control parts are necessary to
accomplish a precise two-dimensional operation.
According to the present invention there is
provided an automatic work feeding apparatus for
use with a press including a slide bar that has the
work holding member and which can be
reciprocated between two points in the feed
direction of the work, a vertically movable holder
that holds said slide bar while allowing horizontal
movement thereof, a power transmission
mechanism to be coupled to the slide or the slide
power transmission mechanism of the press so as
to be operated in use in synchronism with
reciprocating motion of said slide, the power
transmission mechanism being arranged to rotate a a cam shaft in opposite directions, a cam mounted on said cam shaft, two cam mechanisms, one to
cause horizontal movement of the work holding
member and the other to cause vertical movement
thereof, the cam mechanisms being movable in
response to a change in the position of the cam
face of the cam, and displacement transmission
mechanism arranged to transmit the motion of the
cam mechanism to said slide bar and to said
holder.
The present invention thus provides an
apparatus that feeds workpieces to a press in a
predetermined sequence without a separate drive
source but using the power output of the press.
In order that the invention may be more clearly
understood, the following description is given by
way of example only with reference to the
accompanying drawings in which:
Fig. 1 is a general front view of a preferred
embodiment of automatic feeder according to the
present invention;
Fig. 2 is a simplified perspective view showing the internal mechanism of the feeder of Fig. 1; Fig. 3 is a front view, partially cut away, of the pusher mechanism of the feeder of Fig. 1; Fig. 4 is a front view, partially cut away, of the horizontal feed mechanism of the feeder of Fig. 1; and
Fig. 5 is a side elevational view, partially cut away, of the feeder of Fig. 1.
Fig. 1 is a general front view of a press working apparatus that has incorporated therein an automatic feeder of the present invention. The press working apparatus generally indicated at 10 consists of a press 11 and an automatic feeder 12.
The press 11, which is a C type press, comprises a
C type frame 13, a bolster 14, a lower mold 15, a slide 16, an upper mold 17, a motor (not shown) and a rotary shaft 1 8. When the press motor rotates the shaft 18, a cam mechanism (not shown) transmits power to the slide 1 6 which reciprocates in the direction indicated by the twoheaded arrow A and presses a workpiece 1 9 on the lower mold 1 5. Therefore, the rotary shaft 18 and cam mechanism make up a slide power transmission mechanism that transmits the motor power to slide 1 6.The rotary shaft 1 8 projects from the upper side wall of the frame 13 and its projecting end is provided with a rotary wheel 20 'that rotates together with the shaft 1 8. An eccentric pin 21 is provided at an eccentric point of the rotary wheel 20.
The automatic feeder 1 2 comprises a pusher mechanism 22 that pushes the lowest of a stack of sheet-like workpieces 1 9 in a magazine (not shown) from position a to b, and a horizontal feed mechanism 24 wherein a holding member 23 that engages the workpiece at position b by suction, carries it along the path indicated by the twoheaded arrow B (b-C-d) and positions it on the lower mold 1 5 (position e). The feeder 12 has a cam shaft 26 that is rotatably mounted on a frame 25 by ball bearings, and the cam shaft 26 is supported by the frame in a horizontal plane as shown in Fig. 2. The cam shaft 26 projects from the front side of the frame 25 and its projecting end is fixed to one end of a lever 27; the other end of the lever 27 being rotatably connected to one end of a long link member 28 by a pin 29.The other end of the link member 28 is pivotally connected to the eccentric pin 21 provided in the
rotary wheel 20. Due to this arrangement, rotation of the shaft 1 8 on the press 11 causes vertical
movement of the link member 28, which then
causes the cam shaft 26 to swing through a
predetermined angular range (not more than 18,00) in opposite directions as indicated by the two-headed arrow C. Therefore, the rotary wheel
20, link member 28, and lever 27 make up a
power transmission mechanism that transmits
part of the output power of the motor in the press
11 to the cam shaft 26.
Fig. 2 is a simplified perspective view of the
mechanism incorporated within the frame of the
automatic feeder 12. The cam shaft 26 has a
single oscillating cam 30. Follower shafts 31 and 32 parallel to the cam shaft 26 are rotatably supported by the frame 25, and levers 33 and 34 are fixed to the respective follower shafts at one end. The levers have rollers 33a and 34a, respectively, which are urged against the cam face 30a and positioned to face each other via the oscillating cam 30. A spring (not shown) is loaded in selected positions to urge the rollers 33a and 34a against the cam 30.
A feed arm 36 for the pusher mechanism 22 that is rotatable via a ball bearing 35 is provided in the middle of the cam shaft 26. The periphery of the arm is provided with teeth 36a that engage a cogwheel 37 that rotates together with the follower shaft 32. As the cam shaft 26 rotates in two opposite directions as indicated by arrows C, and C2, roller 34a detects a change in the position of the cam face 30a, and as a result of this detection, the follower shaft 32 rotates in two opposite directions indicated by the arrows D1 and D2, whereupon like the cam shaft 26, the feed arm 36 rotates in two opposite directions as indicated by arrows E1 and E2.
As shown in Fig. 3, the forward end of the feed arm 36 is connected by a link 41 to one end of a pusher 40 having rollers 39 that travel on the base 38 of the pusher mechanism 22 in the feed direction, and as the arm 36 swings, the pusher 40 reciprocates on the horizontal plane. The upper surface of the pusher 40 has a recess 40a, and every time the pusher reciprocates, the side edge of the lowest sheet of the workpieces 1 9 stacked in a magazine (not shown) is pushed forward by the edge of the recess to point b in Fig. 1.
As shown in Fig. 4, a holder 42 6n the frame 25 is positioned between the pusher mechanism ?2 and the lower mold 1 5 on press 11; the holder contains two rows of vee-grooved rollers 42a that hold a rectangular slide bar 43 in the feed direction which is movable with respect to the holder 42 in the feed direction. The slide bar 43 has a holding member 23 at a point close to the forward end of an arm 44. The holding member 23 may be of magnetic suction type of chuck type, and in the illustrated embodiment, it comprises a pair of vacuum sucking pads. The underside of the holder 42 is rotatably connected by a pin to one end of each of two kinked flexible links 45, and the other end of each link is rotatably connected to one end of a straight link 46 by a pin, so that each kinked link 45 is rotatable around an axis 45a.The other end of the straight link 46 is rotatably connected by a pin to the forward end of a lever 47 fixed to the other end of the follower shaft 31.
Because of this arrangement, when the lever 47 is turned counterclockwise as seen in Fig. 4, the straight link 46 moved to the left and the pair of kinked links 45 are rotated clockwise around the axis-45a, whereupon the slide bar 43 as well as the holder 42 are pushed up, and if the lever 47 is subsequently rotated clockwise, the holder 42 is pushed down.
The follower shaft 31 having the lever 47 rotates according to the change in the position of the cam face 30a of the oscillating cam 30 on the cam
shaft 26. The shape of the cam face against which
the roller 33a is urged is so designed that the
follower shaft 31 is rotated in directions F, and F2
according to the rotation of the cam shaft 26 in
directions C, and C2, respectively (see Fig. 2).
The slide bar 43 has a horizontal feed arm 49
that is connected to the other end of the cam shaft
26 by a ball bearing 8, and the forward end of the
arm 49 is rotatably connected to a slider 50 by a
pin 49a, and the slider 50 is fitted in a vertically
movable fashion in a groove 51 a defined by a
guide frame 51 fixed to one lateral side of the
holder 42. The base of the horizontal feed arm 49
is rotatably connected to one end of a link 52, and
the other end of said link is rotatably connected to
one end of an arm 53 fixed to the other end of the follower shaft 32.Because of this arrangement, when the cam shaft 26 is rotated in a direction
indicated by arrow Ct and C2 as shown in Fig. 2, the horizontal feed arm 49 is rotated around the cam shaft 26 in a direction indicated by arrow G or G2 (Fig. 4) and the slide bar 43 as guided by
rollers 42a is moved horizontaliy in a direction indicated by, arrow H1 or H2 (Fig. 4). The horizontal feed arm 49 is connected to the slide bar 43 by the guide frame 51 and slider 50 to absorb any
undesired vertical movement of the arm 49, and the work can be fed smoothly on the horizontal
plane without vertical fluctuation of the slide bar 43.As shown in Fig. 4, the components of Fig. 2 are contained in a cam box 54.
As described in the foregoing, the automatic feed of the present invention has a power transmission mechanism that is coupled to the slide power transmission mechanism of the press and whidh is operated in synchronism with the
reciprocating motion of the slide 1 6 to rotate the
cam shaft 26 in two opposite directions. Because
of this mechanism, the feeder is capable of reliable feeding the work by effecting the two-dimensional
operation of the holding member 23 without using
a separate drive source such as a motor. Another
advantage of this mechanism is that it offers a
compact and simple feed system. In the illustrated
embodiment, the power transmission mechanism
comprises rotary wheel 20 and elongated link 28.
The mechanism can be further simplified by a
pinion mounted on the cam shaft 26 that engages
a rack fixed to the slide 1 6. As a further merit, the
cam shaft 26 is so designed that it is rotated in two opposite directions over a range of almost
1800, and this enables the two rollers 33a and
34a to be positioned in a face-to-face relation for
detecting a change in position of the cam face 30a
on a single oscillating cam 30, and as a result, the
overall construction ofthe power transmission
mechanism is further simplified.
This simplicity in construction coupled with the
use of power from the slide power transmission
mechanism of the press, enabies timed two
dimensional operation of the holding member 23 in
conjunction with the reciprocal motion of the
slide, hence high-speed feed of the work. In
addition, the feeder has a pusher mechanism that
temporarily brings the work close to bolster 14 in synchronism with the rotation of the cam shaft 26 in two opposite directions, and because of this arrangement, the feeder has a simple construction in spite of the use of the pusher mechanism, and effects timed horizontal feed of the work. It is to be understood that the work can be brought close to the bolster temporarily be another mechanism such as a belt conveyor driven by the rotation of the. cam shaft.
Claims (6)
1. An automatic work feeding apparatus for use with a press including a slide bar that has a work holding member and which can be reciprocated between two points in the feed direction of the work, a vertically movable holder that holds said slide bar while allowing horizontal movement thereof, a power transmission mechanism to be coupled to the slide or the slide power transmission mechanism of the press so as to be operated in use in synchronism with reciprocating motion of said slide, the power transmission mechanism being arranged to rotate a cam shaft in opposite directions, a cam mounted on said cam shaft, two cam mechanism, one to cause horizontal movement of the work holding member and the other to cause vertical movement thereof, the cam mechanisms being movable in response to a change in the position of the cam face of the cam, and displacement transmission mechanisms arranged to transmit the motion of the cam mechanisms to said slide bar and to said holder.
2. An automatic work feeding apparatus according to claim 1, wherein each of said cam mechanisms has a roller urged against the cam face to detect a change in its position, the two rollers being positioned in a face-to-face relation with respect to a single cam.
3. An automatic work feeding apparatus according to claim 1 or 2 including a horizontal feed mechanism to carry the work to the first of said points, and a displacement transmission mechanism that operates said horizontal feed mechanism upon rotation of said cam shaft.
4. An automatic work feeding apparatus constructed and arranged substantially as hereinbefore described with reference to and as illustrated in the accompanying drawings.
5. The combination of a press and an automatic work feeding apparatus according to any preceding claim, with the slide or slide power transmission mechanism of the press being coupled to the power transmission mechanism of the work feeding apparatus.
6. The combination of a press and an automatic work feeding apparatus substantially as hereinbefore described with reference to and as illustrated in the accompanying drawings.
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP57068917A JPS58187225A (en) | 1982-04-24 | 1982-04-24 | Automatic feed device of object to be worked |
Publications (1)
Publication Number | Publication Date |
---|---|
GB2119761A true GB2119761A (en) | 1983-11-23 |
Family
ID=13387480
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
GB08226672A Withdrawn GB2119761A (en) | 1982-04-24 | 1982-09-20 | Automatic work feeder |
Country Status (3)
Country | Link |
---|---|
JP (1) | JPS58187225A (en) |
KR (1) | KR870000177B1 (en) |
GB (1) | GB2119761A (en) |
Cited By (7)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP0738103A2 (en) * | 1995-04-15 | 1996-10-16 | atg test systems GmbH | Process and device for the automatic handling of objects to be electrically tested |
CN108393371A (en) * | 2018-05-14 | 2018-08-14 | 日照职业技术学院 | A kind of flexible sheet automatic feeder for punch |
IT201800007352A1 (en) * | 2018-07-19 | 2020-01-19 | Feeding system of long-shaped elements to an operating machine | |
CN112916750A (en) * | 2020-12-29 | 2021-06-08 | 泉州芸台科技有限公司 | Automatic feeding device of die cutting machine |
CN114309208A (en) * | 2021-12-24 | 2022-04-12 | 宁波全勤智能科技有限公司 | Servo pay-off unloading system |
CN116037789A (en) * | 2022-12-07 | 2023-05-02 | 江苏郎克斯智能工业科技有限公司 | Stamping and forging process and method for precisely-forged stainless steel component |
CN116871382A (en) * | 2023-04-26 | 2023-10-13 | 张家港市霞飞塑业有限公司 | Forming process for automatically feeding cake, stamping and discharging cover of pump cover |
Families Citing this family (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS62123325U (en) * | 1986-01-22 | 1987-08-05 | ||
KR101357708B1 (en) * | 2012-10-04 | 2014-02-03 | 주식회사 영진테크 | Feeding device for machine synchronism complex press |
CN103302201A (en) * | 2013-06-07 | 2013-09-18 | 舟山神鹰车辆配件制造厂 | Automatic feeding device of punching machine |
CN104525665B (en) * | 2014-12-31 | 2017-03-15 | 广州市金峰机械科技有限公司 | A kind of automatic press method and its production line |
CN104690184B (en) * | 2015-03-18 | 2016-09-07 | 衡水益通管业股份有限公司 | A kind of corrugated plating feeder for press |
KR102157367B1 (en) * | 2020-05-14 | 2020-09-17 | 진홍봉 | Transfer of material in progressive mold |
Citations (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
GB1415379A (en) * | 1972-01-27 | 1975-11-26 | Norda Spa | Automatic device for feeding workpieces onto machines |
Family Cites Families (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS5929778Y2 (en) * | 1978-04-08 | 1984-08-27 | 株式会社プレス技術研究所 | Press pusher feed device |
JPS5577946A (en) * | 1978-12-06 | 1980-06-12 | Aida Eng Ltd | Feeding apparatus for press material |
-
1982
- 1982-04-24 JP JP57068917A patent/JPS58187225A/en active Granted
- 1982-09-17 KR KR8204215A patent/KR870000177B1/en active
- 1982-09-20 GB GB08226672A patent/GB2119761A/en not_active Withdrawn
Patent Citations (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
GB1415379A (en) * | 1972-01-27 | 1975-11-26 | Norda Spa | Automatic device for feeding workpieces onto machines |
Cited By (12)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP0738103A2 (en) * | 1995-04-15 | 1996-10-16 | atg test systems GmbH | Process and device for the automatic handling of objects to be electrically tested |
EP0738103A3 (en) * | 1995-04-15 | 1997-02-19 | Atg Test Systems Gmbh | Process and device for the automatic handling of objects to be electrically tested |
US5743706A (en) * | 1995-04-15 | 1998-04-28 | Atg Test Systems Gmbh | Method of and apparatus for automatic handling of test pieces |
CN108393371A (en) * | 2018-05-14 | 2018-08-14 | 日照职业技术学院 | A kind of flexible sheet automatic feeder for punch |
IT201800007352A1 (en) * | 2018-07-19 | 2020-01-19 | Feeding system of long-shaped elements to an operating machine | |
EP3597578A1 (en) * | 2018-07-19 | 2020-01-22 | Fatigroup S.R.L. | Supply system for elongate elements for supplying elongate elements to a working machine |
CN112916750A (en) * | 2020-12-29 | 2021-06-08 | 泉州芸台科技有限公司 | Automatic feeding device of die cutting machine |
CN114309208A (en) * | 2021-12-24 | 2022-04-12 | 宁波全勤智能科技有限公司 | Servo pay-off unloading system |
CN114309208B (en) * | 2021-12-24 | 2024-06-04 | 宁波全勤智能科技有限公司 | Servo feeding and discharging system |
CN116037789A (en) * | 2022-12-07 | 2023-05-02 | 江苏郎克斯智能工业科技有限公司 | Stamping and forging process and method for precisely-forged stainless steel component |
CN116037789B (en) * | 2022-12-07 | 2023-09-19 | 江苏郎克斯智能工业科技有限公司 | Stamping and forging device and method for precisely-forged stainless steel component |
CN116871382A (en) * | 2023-04-26 | 2023-10-13 | 张家港市霞飞塑业有限公司 | Forming process for automatically feeding cake, stamping and discharging cover of pump cover |
Also Published As
Publication number | Publication date |
---|---|
JPS58187225A (en) | 1983-11-01 |
JPS6361097B2 (en) | 1988-11-28 |
KR840001478A (en) | 1984-05-07 |
KR870000177B1 (en) | 1987-02-14 |
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Legal Events
Date | Code | Title | Description |
---|---|---|---|
WAP | Application withdrawn, taken to be withdrawn or refused ** after publication under section 16(1) |