CN219616640U

CN219616640U - Cantilever riveting device

Info

Publication number: CN219616640U
Application number: CN202320679429.2U
Authority: CN
Inventors: 徐立朝
Original assignee: Zhejiang Chaorun Machinery Manufacturing Co ltd
Current assignee: Zhejiang Chaorun Machinery Manufacturing Co ltd
Priority date: 2023-03-27
Filing date: 2023-03-27
Publication date: 2023-09-01
Anticipated expiration: 2033-03-27

Abstract

The utility model relates to the technical field of part processing and discloses a cantilever riveting device which comprises a base, a round corner square positioning pin and a liftable riveting punch, wherein a short pin mounting hole with an upper side opening and a counter bore with a lower side opening are formed in the base; the short pin mounting hole and the riveting punch are coaxially arranged; a plug block matched with the counter bore is sleeved and fixed in the counter bore, and a short pin positioning mechanism is arranged on the plug block; the round angle square hole plug bush of cantilever main part is on round angle square locating pin, has cup jointed the short round pin in the pinhole of cantilever main part, and short round pin plug bush is in short round pin mounting hole. The rocker arms of the large rocker arms are further pressed and supported through the pressing blocks, shaking of the large rocker arms in the boring process can be effectively reduced, machining precision of two center holes can be effectively improved, and quality stability is improved. The step locating pin of the short pin locating mechanism can be used for locating the short pin, so that the riveting quality of the cantilever can be improved, and the riveting quality stability of the cantilever can be improved.

Description

Cantilever riveting device

Technical Field

The utility model relates to the technical field of part processing, in particular to a cantilever riveting device.

Background

The cantilever is one of the accessories of the air valve, as shown in figure 5 of the specification, the cantilever comprises a cantilever body and a short pin inserted at one end of the cantilever body, the short pin is connected with the cantilever body in a riveting mode, and a radial through hole is formed in the short pin. The position of the short pin is generally manually rotated to be positioned in the riveting process of the conventional cantilever, and after the riveting is completed, the radial through holes on the short pin are uneven in position relative to the cantilever body, so that the riveting quality of the cantilever is unstable, and the later assembly is influenced.

Disclosure of Invention

The utility model aims to provide a cantilever riveting device, which can position a short pin through a step positioning pin of a short pin positioning mechanism, improve the riveting quality of a cantilever and improve the riveting quality stability of the cantilever; the step locating pin is supported by the pressure spring, and the short pin is driven to automatically rotate by friction force between the belt and the short pin, so that the step locating pin can be conveniently and automatically inserted into a radial through hole of the short pin, and the short pin can automatically complete the locating work.

The technical aim of the utility model is realized by the following technical scheme:

the cantilever riveting device comprises a base, a round square positioning pin and a liftable riveting punch, wherein the riveting punch drives the riveting punch to move up and down through an oil cylinder, the base is fixed on a workbench, the round square positioning pin is inserted and fixed on the base, the riveting punch is positioned above the base, and a short pin mounting hole with an upper side opening and a counter bore with a lower side opening are formed on the base; the short pin mounting hole and the riveting punch are coaxially arranged; a plug block matched with the counter bore is sleeved and fixed in the counter bore, and a short pin positioning mechanism is arranged on the plug block;

the round angle square hole plug bush of cantilever main part is on round angle square locating pin, has cup jointed the short round pin in the pinhole of cantilever main part, and short round pin plug bush is in short round pin mounting hole.

Through the technical scheme, the short pin is inserted into the short pin mounting hole, the short pin positioning mechanism can position the short pin, then the cantilever is placed on the short pin and the round corner square positioning pin, so that the cantilever is positioned, the oil cylinder drives the riveting punch to move downwards, the riveting punch stretches out the short pin to the stretching end above the cantilever main body to extrude, and the riveting work is completed.

The utility model is further arranged to: the upper extending end of the short pin penetrating through the pin hole is provided with a round counter bore in a forming mode, the lower end of the riveting punch is provided with a conical head in a forming mode, and the diameter of the small end of the conical head is smaller than that of the round counter bore and smaller than that of the large end of the conical head.

Through the technical scheme, when the riveting punch is pressed down, the conical head is inserted into the circular counter bore, and the circular counter bore is outwards expanded along with the continuous downward movement of the conical head, so that the short pin is fixedly connected with the cantilever main body, and the riveting work is completed.

The utility model is further arranged to: the insert block is provided with a short pin jack which is arranged coaxially with the short pin mounting hole and a step hole which is communicated with the short pin jack;

the short pin positioning mechanism comprises a step positioning pin inserted in the step hole, a pressure spring is clamped between the large end of the step positioning pin and a spring supporting block, and the spring supporting block is fixed on the end face of the step hole; a push-pull rod is sleeved in the spring supporting block, one end of the push-pull rod is fixed with the step locating pin, the other end of the push-pull rod is fixed with a push-pull block, the other end of the push-pull block is sleeved on the guide rod in an inserting mode, and the guide rod is fixed in the inserting block; the left side of push-pull block is equipped with flexible jar, and flexible jar is fixed on the inserted block, and the telescopic link of flexible jar just keeps the clearance with the push-pull block.

Through the technical scheme, after the short pin is inserted into the short pin mounting hole, the telescopic rod of the telescopic cylinder contracts, the push-pull block loses the supporting function of the telescopic rod of the telescopic cylinder, the step positioning pin automatically moves leftwards under the elastic action of the pressure spring, the end of the step positioning pin abuts against the outer wall of the short pin, then the short pin is rotated, and when the radial through hole of the short pin is aligned with the step positioning pin, the step positioning pin is automatically inserted into the radial through hole, so that the short pin is positioned.

The utility model is further arranged to: the inserting block is provided with a rectangular sinking groove, and the rectangular sinking groove is arranged at the upper end of the short pin inserting hole;

two pulleys arranged in front and back are arranged in the rectangular sinking groove, a belt is tensioned between the two pulleys, one pulley is fixed on a wheel shaft, and the wheel shaft is rotationally connected to the insert block through a bearing; the other belt pulley is fixed on the motor shaft of the motor, and the motor is fixed on the insert block.

The cross section of the belt is circular;

the minimum distance L between the belt and the two straight sections formed by the two pulleys is smaller than the outer diameter of the lower end of the short pin.

Through the technical scheme, the short pin is inserted between the belts, the outer wall of the short pin is tightly attached to the belts, the motor drives the belt pulley to rotate, the belt pulley drives the belt to rotate, the belt drives the short pin to rotate, and when the radial through hole of the short pin is aligned with the step positioning pin, the step positioning pin is automatically inserted into the radial through hole, so that the short pin is positioned, and the automatic positioning of the short pin is realized.

The utility model is further arranged to: the round corner square locating pin is in clearance fit with the round corner square hole;

the pin hole is in clearance fit with the upper end of the short pin.

Through the technical scheme, the cantilever main body is conveniently arranged on the round square locating pin and the short pin.

The step positioning pin of the short pin positioning mechanism can be used for positioning the short pin, so that the riveting quality of the cantilever can be improved, and the riveting quality stability of the cantilever can be improved;

the step locating pin is supported by the pressure spring, and the short pin is driven to automatically rotate by friction force between the belt and the short pin, so that the step locating pin can be conveniently and automatically inserted into a radial through hole of the short pin, and the short pin can automatically complete the locating work.

Drawings

FIG. 1 is a schematic diagram of the structure of the present utility model;

FIG. 2 is an enlarged view of a portion of FIG. 1 about A;

FIG. 3 is a cross-sectional view of FIG. 2 taken about B-B;

FIG. 4 is a cross-sectional view of FIG. 1 about C-C;

fig. 5 is a schematic structural view of a cantilever according to the present utility model.

Reference numerals: 10. a base; 101. A short pin mounting hole; 102. countersink;

20. round corner square locating pins;

30. riveting punch heads; 301. a conical head;

40. inserting blocks; 401. a short pin jack; 402. a step hole; 403. a rectangular sink;

50. a short pin positioning mechanism; 501. Step locating pin; 502. a spring support block; 503. a pressure spring; 504. a push-pull rod; 505. a push-pull block; 506. a guide rod; 507. a telescopic cylinder; 508. a belt pulley; 509. a belt; 5091. a straight section; 510. a wheel axle;

60. a support; 601. a step through hole; 61. step ejector rod; 62. a floating support; 63. a pressure spring;

90. a cantilever body; 901. round corner square hole; 902. a pin hole; 91. a short pin; 911. and (5) a round counter bore.

Detailed Description

The following describes in further detail the embodiments of the present utility model with reference to the drawings and examples. The following examples are illustrative of the utility model and are not intended to limit the scope of the utility model.

The utility model is described below with reference to fig. 1 to 5:

the cantilever riveting device comprises a base 10, a round square positioning pin 20 and a liftable riveting punch 30, wherein the riveting punch is driven to move up and down through an oil cylinder, the base is fixed on a workbench, the round square positioning pin 20 is inserted and fixed on the base 10, the riveting punch 30 is positioned above the base 10, and a short pin mounting hole 101 with an upper side opening and a counter bore 102 with a lower side opening are formed on the base 10; the short pin mounting hole 101 and the riveting punch 30 are coaxially arranged; the counter bore 102 is sleeved and fixed with a plug block 40 matched with the counter bore, and a short pin positioning mechanism 50 is arranged on the plug block 40;

the round square hole 901 of the cantilever main body 90 is inserted and sleeved on the round square positioning pin 20, the pin hole 902 of the cantilever main body 90 is sleeved with the short pin 91, and the short pin 91 is inserted and sleeved in the short pin mounting hole 101.

The short pin is inserted into the short pin mounting hole, the short pin positioning mechanism can position the short pin, then the cantilever is placed on the short pin and the square positioning pin with the round angle, so that the cantilever is positioned, the oil cylinder drives the riveting punch to move downwards, the riveting punch extrudes the short pin to the extending end above the cantilever main body, and the riveting work is completed.

The short pin 91 passes through the upper extending end of the pin hole 902 to form a round counter bore 911, the lower end of the riveting punch 30 is formed with a conical head 301, and the diameter of the small end of the conical head 301 is smaller than that of the round counter bore 911 and the diameter of the large end of the conical head 301.

When the riveting punch is pressed down, the cone head is inserted into the round counter bore, and the round counter bore is outwards expanded along with the continuous downward movement of the cone head, so that the short pin is tightly connected with the cantilever main body, and the riveting work is completed.

The insert block 40 is formed with a short pin insertion hole 401 coaxially arranged with the short pin mounting hole 101 and a step hole 402 communicated with the short pin insertion hole 401;

the short pin positioning mechanism 50 comprises a step positioning pin 501 inserted in the step hole 402, a pressure spring 503 is clamped between the large end of the step positioning pin 501 and a spring supporting block 502, and the spring supporting block 502 is fixed on the end face of the step hole 402; a push-pull rod 504 is sleeved in the spring supporting block 502, one end of the push-pull rod 504 is fixed with the step locating pin 501, the other end of the push-pull rod 504 is fixed with a push-pull block 505, the other end of the push-pull block 505 is sleeved on a guide rod 506 in a plug-in manner, and the guide rod 506 is fixed in the plug-in block 40; the left side of the push-pull block 505 is provided with a telescopic cylinder 507, the telescopic cylinder 507 is fixed on the insertion block 40, and a telescopic rod of the telescopic cylinder 507 is opposite to the push-pull block 505 and is spaced from the push-pull block 505.

After the short pin is inserted into the short pin mounting hole, the telescopic rod of the telescopic cylinder contracts, the push-pull block loses the supporting function of the telescopic rod of the telescopic cylinder, the step positioning pin automatically moves leftwards under the elastic action of the pressure spring, the end part of the step positioning pin abuts against the outer wall of the short pin, then the short pin is rotated, and when the radial through hole of the short pin is aligned with the step positioning pin, the step positioning pin is automatically inserted into the radial through hole, so that the short pin is positioned.

A rectangular sinking groove 403 is formed on the inserting block 40, and the rectangular sinking groove 403 is arranged at the upper end of the short pin inserting hole 401;

two pulleys 508 arranged in front and back are arranged in the rectangular sinking groove 403, a belt 509 is tensioned between the two pulleys 508, one pulley 508 is fixed on a wheel shaft 510, and the wheel shaft 510 is rotationally connected on the insert block 40 through a bearing; the other pulley 508 is fixed to the motor shaft of the motor 511, and the motor 511 is fixed to the insert 40.

The cross section of the belt 509 is circular, so that short pins can be conveniently inserted;

the minimum distance L between the belt 509 and the two straight sections 5091 formed by the two pulleys 508 is smaller than the outer diameter of the lower end of the short pin 91.

The short pin is inserted between the belts, the outer wall of the short pin is tightly attached to the belts, the motor drives the belt pulley to rotate, the belt drives the belt to rotate, and the belt drives the short pin to rotate.

The round square locating pin 20 is in clearance fit with the round square hole 901;

the pin hole 902 is disposed in clearance fit with the upper end of the short pin 91.

The cantilever body is conveniently fitted over the rounded square dowel pins 20 and stub pins.

The foregoing is merely a preferred embodiment of the present utility model, and it should be noted that it will be apparent to those skilled in the art that modifications and variations can be made without departing from the technical principles of the present utility model, and these modifications and variations should also be regarded as the scope of the utility model.

Claims

1. The utility model provides a cantilever riveting device, includes base (10), fillet square locating pin (20) and liftable riveting drift (30), and fillet square locating pin (20) plug bush is fixed on base (10), and riveting drift (30) are located the top of base (10), its characterized in that: a stepped short pin mounting hole (101) with an upper opening and a counter bore (102) with a lower opening are formed in the base (10); the short pin mounting hole (101) and the riveting punch (30) are coaxially arranged; a plug block (40) matched with the counter bore (102) is sleeved and fixed in the counter bore, and a short pin positioning mechanism (50) is arranged on the plug block (40);

the round square hole (901) of cantilever main part (90) is inserted and is overlapped on round square locating pin (20), has cup jointed short round pin (91) in pinhole (902) of cantilever main part (90), and short round pin (91) plug bush is in short round pin mounting hole (101).

2. The cantilever riveting apparatus of claim 1 wherein: the short pin (91) penetrates through the upper extending end of the pin hole (902) to form a round counter bore (911), the lower end of the riveting punch head (30) is formed with a conical head (301), and the diameter of the small end of the conical head (301) is smaller than that of the round counter bore (911) and smaller than that of the large end of the conical head (301).

3. The cantilever riveting apparatus of claim 1 wherein: a short pin jack (401) coaxially arranged with the short pin mounting hole (101) and a step hole (402) communicated with the short pin jack (401) are formed on the insertion block (40);

the short pin positioning mechanism (50) comprises a step positioning pin (501) inserted in the step hole (402), a pressure spring (503) is clamped between the large end of the step positioning pin (501) and a spring supporting block (502), and the spring supporting block (502) is fixed on the end face of the step hole (402); a push-pull rod (504) is sleeved in the spring supporting block (502), one end of the push-pull rod (504) is fixed with the step locating pin (501), a push-pull block (505) is fixed at the other end of the push-pull rod (504), the other end of the push-pull block (505) is sleeved on a guide rod (506), and the guide rod (506) is fixed in the insertion block (40); the left side of push-pull block (505) is equipped with flexible jar (507), and flexible jar (507) is fixed on insert block (40), and the telescopic link of flexible jar (507) just keeps the clearance with push-pull block (505) to push-pull block (505).

4. A cantilever riveting apparatus according to claim 3 wherein: a rectangular sinking groove (403) is formed on the inserting block (40), and the rectangular sinking groove (403) is arranged at the upper end of the short pin inserting hole (401);

two pulleys (508) arranged front and back are arranged in the rectangular sinking groove (403), a belt (509) is tensioned between the two pulleys (508), one pulley (508) is fixed on a wheel shaft (510), and the wheel shaft (510) is rotationally connected on the insertion block (40) through a bearing; the other belt pulley (508) is fixed on the motor shaft of the motor (511), and the motor (511) is fixed on the insert block (40).

5. The cantilever riveting apparatus of claim 4 wherein: the cross section of the belt (509) is circular;

the minimum distance L between the belt (509) and the two straight sections (5091) formed by the two pulleys (508) is smaller than the outer diameter of the lower end of the short pin (91).

6. The cantilever riveting apparatus of claim 1 wherein: the round corner square positioning pins (20) are in clearance fit with the round corner square holes (901);

the pin hole (902) is arranged in clearance fit with the upper end of the short pin (91).