CN111085649A

CN111085649A - Novel stroke adjustable formpiston ejecting mechanism

Info

Publication number: CN111085649A
Application number: CN201911309769.0A
Authority: CN
Inventors: 李多全; 邹友禄; 孙德惠
Original assignee: Anhui Yangtian Machinery Industry Co ltd
Current assignee: Anhui Yangtian Machinery Industry Co ltd
Priority date: 2019-12-18
Filing date: 2019-12-18
Publication date: 2020-05-01

Abstract

The invention discloses a novel stroke-adjustable male die ejecting mechanism in the technical field of cold heading machine die ejection, which comprises a main sliding table, a main connecting rod and a crankshaft, wherein the left end of the main connecting rod is rotatably connected with the bottom of an inner cavity of the main sliding table, the right end of the main connecting rod is connected with the crankshaft, the left side of the top of the main sliding table is rotatably connected with a plurality of groups of front-impact rocker arms at the same interval along the longitudinal direction, the right side of the top of the main sliding table is rotatably connected with an angular rocker block, the left end of the angular rocker block is in threaded connection with adjusting screw rods which are in one-to-one correspondence with the front-impact rocker arms, and the bottom ends of the adjusting screw rods are in sliding connection with the right side of the front-impact rocker arms. The lead-out debugging is simple and convenient, the push-out ejector rod does not need to be replaced, and the mechanism is convenient to maintain and replace.

Description

Novel stroke adjustable formpiston ejecting mechanism

Technical Field

The invention relates to the technical field of cold heading machine demolding, in particular to a novel stroke-adjustable male mold ejecting mechanism.

Background

The cold header is a device for cutting and cold extruding various processed metal wires to make the wires cold-headed and formed in a die, and is used for processing various standard and non-standard fasteners and automobile parts.

When the cold heading machine works and carries out cold heading, the head of a cold heading product is ejected out of a punching die arranged in a punching die seat on the main sliding table, and the next cold heading forming is carried out.

The Chinese utility model patent with the grant notice number of CN202606768U and the grant notice date of 2012-12-19 discloses a front through device of a cold header, which comprises a main connecting rod, a main sliding table and a front through rocker arm, wherein one end of the main connecting rod is hinged with the main sliding table, the other end is connected with a crankshaft, the crankshaft drives the main connecting rod to push the main sliding table to slide back and forth on a workbench when rotating, the front through rocker arm is also hinged with the main sliding table, the lower end of the front through rocker arm pushes an ejector rod to move front through a workpiece when shaking, the shaking of the front through rocker arm is realized by pushing a cam block through a roller, the cam block is arranged on the front through rocker arm, the roller is arranged on the main connecting rod, a return spring is arranged between the front through rocker arm and the main sliding table, under the action of the return spring, the rolling surface of the roller is always attached to the cam curved surface of the cam block, the main connecting rod is provided with a support lug for mounting the roller, and the main connecting rod and the support lug are an integral casting. The utility model discloses simple structure has advantages such as the synchronism is good, the action is stable, preceding logical play is accurate.

Although each station of leading to out the device before above-mentioned cold heading machine is independent installation, but can not the independent control, the stroke of leading to out is injectd by the preshoot cam and drive mechanism, however the preceding stroke of leading to on each station is different in the cold heading in-process, can only change the effect of leading to out the stroke through changing the length of conduction ejector pin in the mould, for example cut the ejector pin short, the stroke is led to out to one section of idle running, the ejector pin shortens easily to lose, still need demolish the mould with trading, its mounting structure is on an axle, if need preshoot rocking arm fracture or release ejector pin damage to need follow the trade, need follow the whole dismantlement back of preshoot mechanism and trade, be unfavorable for production and maintenance.

Based on the above, the invention designs a novel stroke-adjustable male die ejecting mechanism to solve the problems.

Disclosure of Invention

The invention aims to provide a novel stroke-adjustable male die ejecting mechanism, which solves the problem that the station ejecting stroke of the male die ejecting mechanism provided in the background technology is inconvenient to adjust.

In order to achieve the purpose, the invention provides the following technical scheme:

a novel stroke-adjustable male die ejecting mechanism comprises a main sliding table, a main connecting rod and a crankshaft, wherein the left end of the main connecting rod is rotatably connected with the bottom of an inner cavity of the main sliding table, and the right end of the main connecting rod is connected with the crankshaft; the left side of the forward swing arm is connected with the main sliding table through a reset mechanism a and is used for keeping the forward swing arm in contact with the adjusting screw; the right side of the horn-shaped rocking block is connected with the main sliding table through a reset mechanism b and is used for keeping the preshoot roller in contact with the preshoot cam.

The novel stroke-adjustable male die ejecting mechanism further comprises the angle-shaped rocking block, the surface of the rotating seat is fixedly connected with a fixed rod corresponding to the forward swing arm at the same interval, the adjusting screw rod is in threaded connection with the left end of the fixed rod, when the fixed rod needs to be maintained, a user can detach the fixed rod from the rotating seat for maintenance, and the operation of the user is facilitated.

According to the novel stroke-adjustable male die ejecting mechanism, further, the adjusting screw rod is perpendicular to the fixing rod.

According to the novel stroke-adjustable male die ejecting mechanism, two ends of each set of the rotating shaft of the front punch rocker arm are mounted on the main sliding table through the rocker arm upper cover, and two ends of the angular rocker arm rotating shaft are mounted on the main sliding table through the rocker arm upper cover.

The novel stroke-adjustable male die ejecting mechanism comprises a rotating seat a which is rotatably connected to the left side of a forward swing arm, the top of the rotating seat a is fixedly connected with an insertion rod a, a socket a which is positioned above the insertion rod a is arranged on a main sliding table, the upper end of the insertion rod a is inserted into an insertion hole a of the socket a, the diameter of the insertion hole a is larger than that of the insertion rod a, the insertion rod a can rotate in the insertion hole a, a return spring a is sleeved on the surface of the insertion rod a, a threaded sleeve a with the top surface contacting with the return spring a is in threaded connection with the bottom of the surface of the insertion rod a, and the return spring a can be correspondingly adjusted along with the adjustment of the threaded sleeve a, so that the forward swing arm and an adjusting screw are always attached and synchronously run.

The novel stroke-adjustable male die ejecting mechanism comprises a rotating seat b which is rotatably connected to the right side of an angular rocking block, the top of the rotating seat b is fixedly connected with an inserting rod b, a socket b which is positioned above the inserting rod b is arranged on a main sliding table, the upper end of the inserting rod b is inserted into a jack b of the socket b, the diameter of the jack b is larger than that of the inserting rod b, the inserting rod b can rotate in the jack b, a return spring b is sleeved on the surface of the inserting rod b, a threaded sleeve b with the top surface contacting with the return spring b is in threaded connection with the bottom of the surface of the inserting rod b, and the return spring b can be correspondingly adjusted along with the adjustment of the threaded sleeve b, so that a front punching roller and a front punching cam are always attached and synchronously run.

According to the novel stroke-adjustable male die ejecting mechanism, the left side of the bottom end of the front impact rocker arm is fixedly provided with the ejecting pin, the left side of the ejecting pin is smooth, the ejecting pin is fixed on the front impact rocker arm through the bolt or the screw, when the ejecting pin is damaged, a user can detach and replace the ejecting pin, the whole front impact rocker arm does not need to be detached, and the maintenance is convenient for the user.

According to the novel stroke-adjustable male die ejecting mechanism, a lower pressing pin is fixedly arranged at the contact position of the front punching rocker arm and the adjusting screw rod, a smooth round cover is fixed at the top of the lower pressing pin, the lower pressing pin is fixed on the front punching rocker arm through a bolt or a screw, when the lower pressing pin is damaged, a user can detach and replace the lower pressing pin, the whole front punching rocker arm does not need to be detached, and the maintenance is convenient for the user.

According to the novel stroke-adjustable male die ejecting mechanism, the bottom end surface of the adjusting screw is an arc surface, so that the angle of the adjusting screw is changed during adjustment, the adjusting screw can still be tightly attached to the lower pressing pin, scratches on a round cover of the lower pressing pin are avoided, and the service lives of the adjusting screw and the lower pressing pin are prolonged.

According to the novel stroke-adjustable male die ejecting mechanism, the number of the front-impact rocker arms and the number of the fixed rods are six.

Compared with the prior art, the invention has the beneficial effects that:

according to the invention, the protruding length of the bottom end of the adjusting screw rod at the bottom end of the horn-shaped rocking block can be rotated to independently adjust the angle of each forward-impact rocking arm, so that the effect of independently adjusting the through-out stroke of each station is achieved, wherein the through-out stroke can be shortened by upward adjustment of the adjusting screw rod, the through-out stroke can be lengthened by downward adjustment of the adjusting screw rod, and the debugging and the use are convenient;

through the arrangement of the reset mechanism a, the threaded sleeve a is rotated, and the height of the threaded sleeve a on the inserted link a is adjusted, so that the forward swing arm and the adjusting screw are always attached and synchronously run, and the effect of adjusting the reset pressure of the reset spring a is achieved;

the male die ejecting mechanism can be independently installed on each station through the rocker arm upper cover and can be independently adjusted, the length of the stroke of male die ejection can be adjusted according to the cold heading requirement by rotating the adjusting screw rod, the speed of the male die ejection time can be adjusted according to the cold heading requirement, the reset pressure of each station of the male die ejecting mechanism is independently adjusted through the reset mechanism a, the transmission load is effectively reduced, the ejection pin can be independently and quickly replaced on each station, the ejection pin can be conveniently and independently inserted and debugged, the ejection ejector rod does not need to be replaced, and the mechanism is convenient to maintain and replace.

Additional advantages, objects, and features of the invention will be set forth in part in the description which follows and in part will become apparent to those having ordinary skill in the art upon examination of the following or may be learned from practice of the invention.

Drawings

In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings used in the description of the embodiments will be briefly introduced below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and it is obvious for those skilled in the art that other drawings can be obtained according to the drawings without creative efforts.

FIG. 1 is a schematic front view of the present invention;

FIG. 2 is a schematic top view of the present invention;

FIG. 3 is a left side view of the present invention;

FIG. 4 is a schematic front view of a master link and a horn shaped rocker configuration of the present invention;

FIG. 5 is a schematic front view of a forward swing arm and horn configuration of the present invention;

FIG. 6 is a schematic structural view of the ram when ejecting the ejector pin according to the present invention;

FIG. 7 is a schematic view of the adjusting screw of the present invention adjusted upward;

FIG. 8 is a schematic perspective view of the present invention;

in the drawings, the components represented by the respective reference numerals are listed below:

1-main sliding table, 2-main connecting rod, 3-crankshaft, 4-rocker arm upper cover, 5-forward impact rocker arm, 6-resetting mechanism a, 7-rocker upper cover, 8-angular rocker, 81-rotating seat, 82-fixed rod, 9-forward impact roller, 10-forward impact cam, 11-adjusting screw rod, 12-resetting mechanism b, 13-ejection pin, 14-downward pressing pin, 15-punching die, 16-ejection ejector rod and 17-fixed bolt.

Detailed Description

The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. 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.

Referring to fig. 1-5 and fig. 8, the present invention provides a technical solution: a novel stroke-adjustable male die push-out mechanism comprises a main sliding table 1, a main connecting rod 2 and a crankshaft 3, wherein the left end of the main connecting rod 2 is rotatably connected with the bottom of an inner cavity of the main sliding table 1, the right end of the main connecting rod is connected with the crankshaft 3, the left side of the top of the main sliding table 1 is rotatably connected with six groups of front punch rocker arms 5 at the same interval along the longitudinal direction, two ends of a rotating shaft of each group of front punch rocker arms 5 are installed on the main sliding table 1 through rocker arm upper covers 4, through the arrangement of the rocker arm upper covers 4, a user only needs to remove the rocker arm upper covers 4 on the single front punch rocker arm 5 to replace the rotating shaft, the problem that the front punch rocker arms 5 of the mechanism are inconvenient to maintain and disassemble is solved, a punch die 15 is fixedly installed on the left side of the main sliding table 1, the punch die 15 is provided with six die cavities, push-out ejector rods 16 are respectively and slidably connected in, the left side of the ejection pin 13 is smooth, the ejection pin 13 is fixed on the front impact rocker arm 5 through a plug pin or a screw, when the ejection pin 13 is damaged, a user can detach and replace the ejection pin 13 without detaching the whole front impact rocker arm 5, and the maintenance is convenient for the user;

the right side of the top of the main sliding table 1 is rotatably connected with a horn-shaped rocking block 8, two rotating ends of the horn-shaped rocking block 8 are arranged on the main sliding table 1 through a rocking block upper cover 7, through the arrangement of the rocking block upper cover 7, a user only needs to remove the rocking block upper covers 7 at two ends of the horn-shaped rocking block 8 to replace the horn-shaped rocking block 8, the problem that the horn-shaped rocking block 8 is inconvenient to maintain and disassemble is solved, the left end of the horn-shaped rocking block 8 is in threaded connection with adjusting screw rods 11 which are in one-to-one correspondence with the front impact rocker arms 5, specifically, the horn-shaped rocking block 8 comprises a rotating seat 81, the surface of the rotating seat 81 is fixedly connected with fixing rods 82 which are in correspondence with the front impact rocker arms 5 at the same interval, the adjusting screw rods 11 are in threaded connection with the left end of the fixing rods 82, the adjusting screw rods 11 and the fixing rods 82 are, the operation is convenient for users;

the bottom end of the adjusting screw rod 11 is slidably connected with the right side of the front impact rocker arm 5 so as to drive the front impact rocker arm 5 to rotate through the downward rotation of the adjusting screw rod 11, a lower pressing pin 14 is fixedly installed at the contact position of the front impact rocker arm 5 and the adjusting screw rod 11, a smooth round cover is fixed at the top of the lower pressing pin 14, the lower pressing pin 14 is fixed on the front impact rocker arm 5 through a bolt or a screw, when the lower pressing pin 14 is damaged, a user can detach and replace the lower pressing pin 14 without detaching the whole front impact rocker arm 5, and the maintenance of the user is facilitated; the bottom end surface of the adjusting screw rod 11 is a circular arc surface, so that the angle of the adjusting screw rod 11 is changed during adjustment, the adjusting screw rod can still be tightly attached to the lower pressing pin 14, scratches on a round cover of the lower pressing pin 14 are avoided, and the service lives of the adjusting screw rod 11 and the lower pressing pin 14 are prolonged;

the bottom end of the angular rocking block 8 is fixedly provided with a forward-thrust roller 9, and the top of the main connecting rod 2 is fixedly connected with a forward-thrust cam 10 which is in rolling connection with the forward-thrust roller 9 through a fixing bolt 17;

the left side of the forward swing arm 5 is connected with the main sliding table 1 through a reset mechanism a6 for keeping the forward swing arm 5 in contact with the adjusting screw 11, specifically, the reset mechanism a6 comprises a rotating seat a rotatably connected to the left side of the forward swing arm 5, the top of the rotating seat a is fixedly connected with an inserted link a, the main sliding table 1 is provided with a socket a positioned above the inserted link a, the upper end of the inserted link a is inserted into an insertion hole a of the socket a, the diameter of the jack a is larger than that of the inserted rod a, so that the inserted rod a can rotate in the jack a, the surface of the inserted rod a is sleeved with a return spring a, the bottom of the surface of the inserted rod a is in threaded connection with a threaded sleeve a, the top surface of the threaded sleeve a is in contact with the return spring a, the return spring a can be correspondingly adjusted along with adjustment of the threaded sleeve a, the fact that the forward-stroke rocker arm 5 and the adjusting screw 11 are always in fit and synchronous operation is guaranteed, and the return pressure of the return spring a can be adjusted by rotating the threaded sleeve a;

the right side of the horn-shaped rocking block 8 is connected with the main sliding table 1 through a reset mechanism b12 for keeping the contact between the front impact roller 9 and the front impact cam 10, specifically, the reset mechanism b12 comprises a rotating seat b which is rotatably connected to the right side of the horn-shaped rocking block 8, the top of the rotating seat b is fixedly connected with an inserted link b, a socket b which is positioned above the inserted link b is arranged on the main sliding table 1, the upper end of the inserted link b is inserted into an insertion hole b of the socket b, and the diameter of jack b is greater than the diameter of inserted bar b, lets inserted bar b rotate in jack b, and the surface cover of inserted bar b is equipped with reset spring b, and the bottom threaded connection on inserted bar b surface has top surface and the thread bush b of reset spring b contact, and corresponding adjustment can be made along with the regulation of thread bush b to reset spring b, guarantees that preshoot gyro wheel 9 and preshoot cam 10 laminate synchronous operation all the time, can adjust reset spring b's reset pressure through rotating thread bush b.

One specific application of this embodiment is: when the device works, the crankshaft 3 rotates, the crankshaft 3 drives the main sliding table 1 to move left and right through the main connecting rod 2, when the main sliding table 1 moves right, the main connecting rod 2 and the main sliding table 1 rotate relatively, the front impact roller 9 is connected with the front impact cam 10 in a rolling way, the front impact cam 10 lifts the front impact roller 9, the front impact roller 9 drives the horn-shaped rocker 8 and the adjusting screw 11 to rotate anticlockwise, the horn-shaped rocker 8 compresses a reset spring b in a reset mechanism b12, the adjusting screw 11 drives the front impact rocker 5 to rotate clockwise through a downward pressing pin 14 when rotating anticlockwise, the front impact rocker 5 compresses a in a reset mechanism a6, the ejector pin 13 at the bottom end of the front impact rocker 5 pushes the push-out ejector rod 16 leftwards, workpieces in the punching die 15 are ejected through the push-out ejector rod 16 by moving leftwards, as shown in figure 6, when the main sliding table 1 moves leftwards, the restoring force of the reset mechanisms a6 and the reset spring in a reset mechanism b12 are, the adjusting screw 11 is tightly attached to the lower pressing pin 14, the front punching roller 9 and the front punching cam 10 until the original position is recovered;

when the mechanism is used for adjusting the passing-out stroke of the male die, a user rotates the adjusting screw rod 11, the bottom end of the adjusting screw rod 11 is rotated to the protruding length of the bottom end of the horn-shaped rocking block 8, so that the ejection pin 13 at the bottom end of the forward rocking arm 5 is displaced to the left or the right by one end distance, each forward rocking arm 5 can be independently adjusted, and the effect of independently adjusting the passing-out stroke of each station is achieved, wherein the upward adjustment of the adjusting screw rod 11 can shorten the passing-out stroke, the downward adjustment of the adjusting screw rod 11 can lengthen the passing-out stroke, the stroke size is calculated specifically according to the pitch of the adjusting screw rod 11, and the mechanism is; when the distance between the ejection pin 13 at the bottom end of the forward swing arm 5 and the push-out ejector rod 16 is adjusted to be displaced to the right by a certain distance, the ejection pin 13 pushes the push-out ejector rod 16 to move within a certain time, as shown in fig. 7, so that the effect of adjusting the speed of the male die through and out can be achieved by adjusting the stroke of the male die through and out.

In addition, the height of the threaded sleeve a on the inserted link a is adjusted by rotating the threaded sleeve a, so that the forward-stroke rocker arm 5 and the adjusting screw 11 are always attached and synchronously run, and the effect of adjusting the reset pressure of the reset spring a is achieved.

In the description herein, references to the description of "one embodiment," "an example," "a specific example" or the like are intended to mean that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the invention. In this specification, the schematic representations of the terms used above do not necessarily refer to the same embodiment or example. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples.

The preferred embodiments of the invention disclosed above are intended to be illustrative only. The preferred embodiments are not intended to be exhaustive or to limit the invention to the precise embodiments disclosed. Obviously, many modifications and variations are possible in light of the above teaching. The embodiments were chosen and described in order to best explain the principles of the invention and the practical application, to thereby enable others skilled in the art to best utilize the invention. The invention is limited only by the claims and their full scope and equivalents.

Claims

1. The utility model provides a novel adjustable formpiston release mechanism of stroke, includes main slip table (1), main connecting rod (2) and bent axle (3), the left end of main connecting rod (2) is rotated with the bottom of main slip table (1) inner chamber and is connected, the right-hand member is connected with bent axle (3), its characterized in that: the left side of the top of the main sliding table (1) is rotatably connected with a plurality of groups of forward-stroke rocker arms (5) at the same intervals longitudinally, the right side of the top of the main sliding table (1) is rotatably connected with a horn-shaped rocker (8), the left end of the horn-shaped rocker (8) is in threaded connection with adjusting screws (11) which are in one-to-one correspondence with the forward-stroke rocker arms (5), the bottom end of each adjusting screw (11) is in sliding connection with the right side of the forward-stroke rocker arm (5) so as to drive the forward-stroke rocker arms (5) to rotate through downward rotation of the adjusting screws (11), the bottom end of the horn-shaped rocker (8) is fixedly provided with forward-stroke rollers (9), and the top of the main connecting rod (2) is fixedly connected with forward-stroke cams (10; the left side of the forward swing arm (5) is connected with the main sliding table (1) through a reset mechanism a (6) and used for keeping the forward swing arm (5) in contact with the adjusting screw rod (11); the right side of the horn-shaped rocking block (8) is connected with the main sliding table (1) through a reset mechanism b (12) and is used for keeping the preshoot roller (9) in contact with the preshoot cam (10).

2. The novel stroke-adjustable male mold ejection mechanism of claim 1, wherein: the horn-shaped rocking block (8) comprises a rotating seat (81), the surface of the rotating seat (81) is fixedly connected with a fixing rod (82) corresponding to the forward rocking arm (5) at the same interval, and an adjusting screw rod (11) penetrates through the left end of the fixing rod (82) in a threaded manner.

3. The novel stroke-adjustable male mold ejection mechanism of claim 2, wherein: the adjusting screw rod (11) is perpendicular to the fixing rod (82).

4. The novel stroke-adjustable male die ejector mechanism of claim 1 or 2, wherein: and the two ends of the rotating shaft of the forward rocker (5) of each group are arranged on the main sliding table (1) through rocker upper covers (4), and the two ends of the rotating shaft of the angular rocking block (8) are arranged on the main sliding table (1) through rocking block upper covers (7).

5. The novel stroke-adjustable male mold ejection mechanism of claim 4, wherein: reset mechanism a (6) are including rotating the left rotation seat an of connection in preshoot rocking arm (5), rotate the top fixedly connected with inserted bar an of seat a, be provided with the socket an that is located inserted bar an top on main slip table (1), insert in socket an's jack an in inserted bar an's upper end, and jack an's diameter is greater than inserted bar an's diameter, and inserted bar an's surface cover is equipped with reset spring an, and the bottom threaded connection on inserted bar a surface has the thread bush an of top surface and reset spring a contact.

6. The novel stroke-adjustable male mold ejection mechanism of claim 5, wherein: reset mechanism b (12) are including rotating the rotation seat b of connection on horn-shaped rocker (8) right side, rotate seat b's top fixedly connected with inserted bar b, be provided with the socket b that is located inserted bar b top on main slip table (1), insert in socket b's jack b in inserted bar b's upper end, and jack b's diameter is greater than inserted bar b's diameter, and inserted bar b's surface cover is equipped with reset spring b, and the bottom threaded connection on inserted bar b surface has the thread bush b of top surface and reset spring b contact.

7. The novel stroke-adjustable male mold ejection mechanism of claim 6, wherein: an ejection pin (13) is fixedly mounted on the left side of the bottom end of the forward-flushing rocker arm (5), and the left side of the ejection pin (13) is smooth.

8. The novel stroke adjustable male mold ejection mechanism of claim 7, wherein: a lower pressing pin (14) is fixedly installed at the contact position of the front punching rocker arm (5) and the adjusting screw rod (11), and a smooth round cover is fixed at the top of the lower pressing pin (14).

9. The novel stroke adjustable male mold ejection mechanism of claim 8, wherein: the bottom end surface of the adjusting screw rod (11) is an arc surface.

10. The novel stroke adjustable male mold ejection mechanism of claim 9, wherein: the number of the forward swing arms (5) and the number of the fixed rods (82) are six.