CN108015715B - Printed board puller and use method - Google Patents

Abstract

The invention relates to a printed board pulling device and a using method thereof, comprising a nylon cover, a jacking column, a knurled nut, a steel wire locking buckle, a compression screw, a pulling screw, a limiting pin, a steel wire sliding rod, a nut, a cross beam, a sliding rod compression spring, a sliding rod, a thread sleeve, an expansion head, a conical wedge, a pulling handle, a reset spring, a screw sleeve and a bracket, wherein the expansion head is a pipe body with a petal-shaped claw at the front end and can be opened and closed under the action of pressure, the conical wedge, the expansion head and a printed board metallization hole are clamped by the pressure to pull the printed board up, and the stroke limiting is performed on a pulling mechanism.

Description

Printed board puller and use method

Technical Field

The invention relates to a pulling device, in particular to a printed board pulling device and a using method thereof.

Background

When the printed board is disassembled, a plurality of connectors are welded on the printed board or the operation space is narrow and small, so that the disassembly is difficult, the existing metal hook type extractor is used in the market, a metal hook stretches into a metalized hole of the printed board to hook the hole wall, the printed board is extracted, the hook head of the extractor has a large application range and is small, the cross section area of the hook head is small, the texture is hard, the printed board is easily damaged due to stress concentration in the operation process, the extraction stroke is not easy to control, and the collision is easily caused by excessive extraction.

Disclosure of Invention

In view of the problems existing in the prior art, the invention provides a printed board pulling device and a use method thereof, wherein a conical wedge, an expansion head and a printed board metallization hole are clamped by an expansion head expansion principle to pull up the printed board, and travel limiting is performed on a pulling mechanism. The cross beam is a long rectangular plate, a through hole is arranged in the middle, long rectangular through grooves are symmetrically arranged on two sides of the through hole, two jacking columns are arranged at two sides of the through hole, one end of each jacking column is provided with threads, a nylon cover is in interference fit with the top of the other end of each jacking column, the two jacking columns are respectively inserted into the two through grooves of the cross beam and can slide, two knurled nuts are respectively arranged on the upper surface and the lower surface of the cross beam to fix the two jacking columns on the cross beam, a bracket (20) is fixed on the through hole in the center of the upper end face of the cross beam by the fit of the knurled nuts and the threaded sleeve, the threaded sleeve is smooth in the sleeve, external threads are arranged on the outside of the top, long rectangular through grooves are arranged on the side walls, the threaded sleeve is sleeved on the top of the jacking screw and penetrates into a pin hole on the top of the jacking screw by a limiting pin, the threaded sleeve is limited on the jacking screw, the reset spring is arranged in the threaded sleeve, the knurled nut is matched with the external threads on the top of the threaded sleeve to be fixed on the cross frame at the upper end of the bracket, the pulling handle and the steel wire slide bar are sequentially and alternately screwed on the pulling screw rod to form vertical space, the steel wire slide bar is a tube body, the side wall of the steel wire slide bar is provided with two symmetrical openings, two steel wire locking buckles are respectively arranged in tube holes at the two openings of the steel wire slide bar and can slide left and right, two nylon covers are used for covering and fixing the two ports of the steel wire slide bar, one end of the steel wire is in press connection with a conical wedge, the other end of the steel wire penetrates through an expansion head and the slide bar to penetrate into the steel wire locking buckles, the two compression screws are used for respectively jacking and fixing the steel wire and the steel wire locking buckles which are assembled in the same way, a slide bar compression spring is arranged outside the slide bar, a knurled nut is used for fixing the slide bar on a cross beam, the slide bar with the slide bar compression spring penetrates through a thread sleeve, the slide bar (13) is limited to slide on the thread sleeve by the threaded fit of the top end of the nut and the slide bar, can be opened and closed under the action of pressure.

The pulling stroke is controlled by adjusting the position of the pulling handle.

The use method comprises the following steps that firstly, the knurled nut sleeved with the sliding rod is loosened, the knurled nut slides in a rectangular long round hole of the cross beam, two expansion heads and conical wedges on the sliding rod are respectively placed into two metallized holes of the printed board, then the knurled nut sleeved with the sliding rod is fastened, and the jacking column is pressed on a shell where the printed board is located; step two, lifting the lifting handle upwards by fingers until the lifting handle collides with the screw sleeve, and respectively driving the two conical wedges to move downwards in the two expansion heads so as to open the petal-shaped claws at the front ends of the two expansion heads; step three, lifting the printed board lifting device upwards by hands, lifting the printed boards together, and placing the printed boards at a specified position; and fourthly, loosening the fingers, resetting the pulling handle, extending the conical wedge to the outside of the expansion head, and folding the petal-shaped claws at the front end of the expansion head together to drop the printed board.

The invention has the technical effects that the stress area is large, the lifting stroke is adjustable, the damage of the printed board is greatly reduced, and the expansion head can be suitable for different metallized apertures by replacing different expansion heads.

Drawings

FIG. 1 is a perspective view of the present invention;

FIG. 2 is a front elevational view of the structure of the present invention;

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

FIG. 4 is a cross-beam block diagram of the present invention;

FIG. 5 is a view of the assembled printed board of the present invention;

FIG. 6 is an enlarged view of a portion of FIG. 5;

FIG. 7 is a view of a jammed printed board according to the present invention;

fig. 8 is a partial enlarged view of fig. 7.

Detailed Description

As shown in figures 1-8, the printed board puller comprises a nylon cover 1, a jacking column 2, knurled nuts 3, steel wires 4, steel wire locking buckles 5, compression screws 6, a pulling screw 7, a limiting pin 8, steel wire sliding rods 9, nuts 10, a cross beam 11, a sliding rod compression spring 12, a sliding rod 13, a threaded sleeve 14, an expansion head 15, conical wedges 16, a pulling handle 17, a reset spring 18, a screw sleeve 19 and a bracket 20, wherein the puller is of a bilateral symmetry structure, the cross beam 11 is a long rectangular plate, a through hole 11-1 is formed in the middle, long round rectangular through grooves 11-2 are symmetrically formed in two sides of the through hole 11-1, two jacking columns 2 are respectively arranged at one end of each jacking column 2, threads are respectively arranged at the top of the other end of each jacking column 2, the two jacking columns 2 are respectively inserted into the two through grooves 11-2 of the cross beam 11 in an interference fit manner, and the two nuts 3 are respectively arranged on the upper surface and the lower surface of the cross beam 11 to fix the two jacking columns 2 on the cross beam 11; the bracket 20 is fixed on a through hole 11-1 in the center of the upper end surface of the cross beam 11 by matching the knurled nut 3 with a thread bush 14, the screw bush 19 is smooth in the bush, external threads are arranged outside the top, rectangular through grooves 19-1 are formed in the side wall, the screw bush 19 is sleeved on the top end of the lifting screw 7, a limiting pin 8 penetrates into a pin hole in the top end of the lifting screw 7 through the rectangular through grooves 19-1 of the screw bush 19, the screw bush 19 is limited on the lifting screw 7, a reset spring 18 is arranged in the screw bush 19, the knurled nut 3 is matched with the external threads in the top of the screw bush 19 to be fixed on a cross frame at the upper end of the bracket 20, and a lifting handle 17 and a steel wire slide bar 9 are sequentially fixed on the lifting screw 7 at intervals in a threaded manner, so that the space is vertical; the steel wire slide bar 9 is a pipe body, two symmetrical openings are formed in the side wall of the steel wire slide bar 9, two steel wire locking buckles 5 are respectively arranged in pipe holes at the two openings of the steel wire slide bar 9 and can slide left and right, two nylon covers 1 are used for covering and fixing the two ports of the steel wire slide bar 9, and two nylon covers are arranged at the two end covers of the steel wire slide bar to prevent the steel wire locking buckles from sliding out; one end of the steel wire 4 is in compression joint with the conical wedge 16, the other end of the steel wire passes through the expansion head 15, the sliding rod 13 penetrates into the steel wire locking buckle 5, the steel wire 4 and the steel wire locking buckle 5 which are assembled in the same way are respectively and tightly pressed and fixed by two compression screws 6, the sliding rod compression spring 12 is arranged outside the sliding rod 13, the thread bush 14 is fixed on the cross beam 11 by the knurled nut 3, the sliding rod 13 with the sliding rod compression spring 12 passes through the thread bush 14, the sliding rod 13 is limited to slide on the thread bush 14 by the threaded fit of the nut 10 and the top end of the sliding rod 13, and the expansion head 15 is a pipe body with a petal-shaped claw at the front end and can be opened and closed under the pressure.

The method of use comprises the steps of,

step one, loosening the knurled nut 3 sleeved with the sliding rod 13, enabling the knurled nut 3 to slide in the oblong rectangular hole 11-2 of the cross beam 11, enabling the two expansion heads 15 and the conical wedges 16 on the sliding rod 13 to be respectively placed into the two metallized holes of the printed board, fastening the knurled nut 3 sleeved with the sliding rod 13, and tightly pressing the jacking column 2 on the shell where the printed board is located;

step two, lifting the lifting handle 17 upwards by fingers until the lifting handle 17 collides with the screw sleeve 19, and respectively driving the two conical wedges 16 to move downwards in the two expansion heads 15 so as to open the petal-shaped claws at the front ends of the two expansion heads 15;

step three, lifting the printed board lifting device upwards by hands, lifting the printed boards together, and placing the printed boards at a specified position;

and fourthly, loosening the fingers, resetting the pulling handle 17, extending the conical wedge 16 to the outside of the expansion head 15, and folding the petal-shaped claws at the front end of the expansion head 15 together to drop the printed board.

According to the thickness of the printed board, the pulling handle 17 is rotated, the position of the pulling handle 17 is adjusted, the pulling stroke is controlled, and the size of the conical wedge 16 and the expansion head 15 is changed to adapt to various printed board metallization holes.

Claims (3)

1. The utility model provides a printed board extractor, including nylon lid (1), jack-prop (2), knurl nut (3), steel wire (4), steel wire locking knot (5), hold-down screw (6), play pull-out screw rod (7), spacer pin (8), steel wire slide bar (9), nut (10), crossbeam (11), slide bar compression spring (12), slide bar (13), thread bush (14), expansion head (16), conical wedge (15), play pull-out handle (17), reset spring (18), screw rod cover (19), support (20), its characterized in that: the cross beam (11) is a long rectangular plate, a through hole (11-1) is arranged in the middle, two long rectangular through grooves (11-2) are symmetrically arranged on two sides of the through hole (11-1), two jacking columns (2) are arranged at one end of each jacking column (2), a nylon cover (1) is in interference fit with the top of the other end of each jacking column (2), the two jacking columns (2) are respectively inserted into the two long rectangular through grooves (11-2) of the cross beam (11) and can slide, two knurled nuts (3) are respectively arranged on the upper surface and the lower surface of the cross beam (11) to fix the two jacking columns (2) on the cross beam (11), a support (20) is fixed on the through hole (11-1) in the center of the upper end face of the cross beam (11) by matching the knurled nuts (3) with a thread sleeve (14), the screw sleeve (19) is smooth in the sleeve, external threads are arranged on the outer surface of the top of the sleeve, the long rectangular through grooves (19-1) are arranged on the side wall of the jacking screw sleeve (19), the screw sleeve (19) is sleeved on the top of the jacking screw (7) and the top of the screw sleeve (19) penetrates through the rectangular through grooves (19-1) respectively, the two knurled nuts (3) are respectively arranged on the upper surface and lower surface of the cross beam (11), the screw sleeve (19) is sleeved on the upper surface of the screw sleeve, the screw sleeve (19) and the screw sleeve is sleeved on the screw rod (19, the utility model provides a screw rod cover (19) is fixed in on support (20) upper end crossbearer with knurled nut (3) and the cooperation of screw rod cover (19) top external screw thread, pull out handle (17), steel wire slide bar (9) have spaced spiro union in proper order on pull out screw rod (7), become the space perpendicular, steel wire slide bar (9) are the body, two openings of symmetry are had to the lateral wall, two steel wire lock knot (5) are arranged in respectively in the tube hole of two openings of steel wire slide bar (9), but left and right sides slip, cover with two nylon covers (1) and fix on the both ends mouth of steel wire slide bar (9), steel wire (4) one end is in the same place with conical wedge (15) crimping, the other end passes expansion head (16), slide bar (13) penetrates steel wire lock knot (5) in, with two compression screw (6) respectively with steel wire (4) and steel wire lock knot (5) top tight fixation of same assembly, slide bar (12) are arranged in slide bar (13) outside, threaded sleeve (14) are fixed on crossbeam (11) with threaded nut (3), take slide bar compression spring (14) to pass screw rod (13) and screw rod compression jaw (14) and are threaded jaw (13) and are the effect is limited in the screw rod form before the slide bar (13) has the screw rod.

2. The printed board extractor of claim 1, wherein: the pulling stroke is controlled by adjusting the position of the pulling handle (17) on the pulling screw (7).

3. The use method of the printed board puller is characterized in that: the method of use comprises the steps of,

step one, loosening the knurled nut (3) sleeved with the sliding rod (13), enabling the knurled nut to slide in the long round rectangular through groove (11-2) of the cross beam (11) to enable the two expansion heads (16) and the conical wedges (15) on the sliding rod (13) to be respectively placed into two metallized holes of the printed board, and fastening the knurled nut (3) sleeved with the sliding rod (13), wherein the jacking column (2) is pressed on a shell where the printed board is located;

step two, lifting the lifting handle (17) upwards by fingers until the lifting handle (17) collides with the screw sleeve (19), and respectively driving the two conical wedges (15) to move upwards outside the two expansion heads (16) so as to open the petal-shaped claws at the front ends of the two expansion heads (16);

step three, lifting the printed board lifting device upwards by hands, lifting the printed boards together, and placing the printed boards at a specified position;

and fourthly, loosening fingers, resetting a pulling handle (17), extending a conical wedge (15) to the outside of the expansion head (16), and folding the petal-shaped claws at the front end of the expansion head (16) together to drop the printed board.