CN210059694U

CN210059694U - Pawl lifting mechanism

Info

Publication number: CN210059694U
Application number: CN201920666644.2U
Authority: CN
Inventors: 俞华杰; 董诤麟; 陈望奇
Original assignee: Origin Of Intelligent Forming Equipment Ltd By Share Ltd
Current assignee: Origin Of Intelligent Forming Equipment Ltd By Share Ltd
Priority date: 2019-05-10
Filing date: 2019-05-10
Publication date: 2020-02-14
Anticipated expiration: 2029-05-10

Abstract

The utility model discloses a pawl lifting mechanism, which comprises a feeding ratchet wheel, a pawl, a ratchet wheel shaft, a ratchet wheel rocker, a cylinder and a tension spring; the feeding ratchet wheel is arranged on the ratchet shaft in a transmission mode, the ratchet rocker is rotatably arranged on the ratchet shaft, the ratchet rocker is rotatably provided with a pawl shaft, and the pawl is fixed on the pawl shaft and matched with the feeding ratchet wheel; the cylinder is provided with a cylinder connector, one end of the cylinder connector is connected with a connecting block, and the connecting block is connected with the pawl through a pin shaft. The utility model discloses the pawl that obtains lifts up the mechanism utilizes cylinder and pawl to connect, accomplishes the work to the control of feeding stroke and avoid ratchet pawl wearing and tearing in the return stroke simultaneously, has improved the life of ratchet pawl structure to fix the cylinder on the ratchet rocker, simple structure, simple to operate has reduced the influence to the cold heading machine structure.

Description

Pawl lifting mechanism

Technical Field

The utility model relates to a production auxiliary assembly, especially a pawl lifts up mechanism.

Background

The cold header is a processing machine for cutting and upsetting metal wires into required parts, and in the production process, a feeding mechanism of the cold header is required to complete feeding and supplying work of the wires; the existing feeding mechanism of the cold header mostly adopts a ratchet wheel and pawl mechanism in order to meet the processing requirements of parts with different specifications, the mechanism rubs mutually between a pawl and a ratchet wheel in the swinging return stroke process, the service life of the ratchet wheel mechanism can be reduced, and a cylinder with a complex transmission connecting rod arranged outside is often adopted to control the feeding length, so that a large amount of space on the cold header can be occupied.

SUMMERY OF THE UTILITY MODEL

The utility model aims at providing a cylinder and ratchet rocking arm integration in order to solve above-mentioned prior art not enough, avoid the pawl of mutual friction between the ratchet pawl to lift up the mechanism simultaneously, its advantage lies in compact structure small and exquisite, simple to operate, and it is less to cold heading machine overall structure influence.

In order to realize the aim, the pawl lifting mechanism comprises a feeding ratchet wheel, a pawl, a ratchet wheel shaft, a ratchet wheel rocker and a cylinder; the feeding ratchet wheel is arranged on the ratchet shaft in a transmission mode, the ratchet rocker is rotatably arranged on the ratchet shaft, the ratchet rocker is rotatably provided with a pawl shaft, and the pawl is fixed on the pawl shaft and matched with the feeding ratchet wheel; the cylinder is provided with a cylinder connector, one end of the cylinder connector is connected with a connecting block, and the connecting block is connected with the pawl through a pin shaft.

In order to make the structure compact and convenient to install, a cylinder seat structure is fixed on the ratchet wheel rocking rod, and the cylinder is fixed on the cylinder seat structure.

In order to guide the lifted pawl to return quickly and smoothly, a positioning bolt is fixedly inserted on the ratchet wheel rocker, and a tension spring is connected between the pin shaft and the positioning bolt.

In order to reduce the abrasion of the ratchet shaft, a shaft sleeve is arranged at the joint of the feeding ratchet wheel, the ratchet rocker and the ratchet shaft, the ratchet wheel is fixed on the shaft sleeve, the ratchet rocker is rotatably arranged outside the shaft sleeve, and the shaft sleeve is in transmission connection with the ratchet shaft.

The utility model discloses the pawl that obtains lifts up the mechanism utilizes cylinder and pawl to connect, accomplishes the work to the control of feeding stroke and avoid ratchet pawl wearing and tearing in the return stroke simultaneously, has improved the life of ratchet pawl structure to fix the cylinder on the ratchet rocker, simple structure, simple to operate has reduced the influence to the cold heading machine structure.

Drawings

Fig. 1 is a schematic structural view of an embodiment 1 of the pawl lifting mechanism of the present invention;

FIG. 2 is an assembled sectional view of the ratchet pawl in embodiment 1;

fig. 3 is a schematic structural view of embodiment 2 of the pawl lifting mechanism of the present invention;

fig. 4 is an assembled sectional view of the ratchet pawl in embodiment 2.

In the figure: the device comprises a ratchet rocker 1, a feeding ratchet 2, a pawl shaft 3, a pawl 4, a cylinder seat structure 5, a ratchet shaft 6, a cylinder 7, a cylinder joint 8, a connecting block 9, a pin shaft 10, a shaft sleeve 11, a tension spring 12 and a positioning bolt 13.

Detailed Description

The present invention will be further explained with reference to the drawings and examples.

Example 1:

the pawl lifting mechanism described in this embodiment, as shown in fig. 1, includes a feeding ratchet 2, a pawl 4, a ratchet shaft 6, a ratchet rocker 1 and a cylinder 7; the feeding ratchet wheel 2 is arranged on the ratchet wheel shaft 6 in a transmission mode, the ratchet wheel rocker 1 is rotatably arranged on the ratchet wheel shaft 6, the ratchet wheel rocker 1 is rotatably provided with a pawl shaft 3, and the pawl 4 is fixed on the pawl shaft 3 and matched with the feeding ratchet wheel 2; the air cylinder 7 is provided with an air cylinder connector 8, one end of the air cylinder connector 8 is connected with a connecting block 9, and the connecting block 9 is connected with the pawl 4 through a pin shaft 10.

In order to make the structure compact and convenient to install, a cylinder seat structure 5 is fixed on the ratchet rocking rod 1, and the cylinder 7 is fixed on the cylinder seat structure 5.

When in actual feeding, the pawl 4 is clamped on the feeding ratchet wheel 2, the pawl 4 drives the feeding ratchet wheel 2 to rotate by a specified stroke along with the swinging of the ratchet rocker 1, when the pawl 4 reaches the specified stroke, the air cylinder 7 which is static relative to the ratchet rocker 1 works, the pawl 4 is pulled up through the connecting block 9 and the pin shaft 10, at the moment, the feeding ratchet wheel 2 loses power to stop feeding, and the ratchet rocker 1 starts reverse swinging return stroke; when the ratchet rocker 1 returns to the starting position, the pawl 4 is lowered and re-latched onto the feed ratchet 2.

The pawl lifting mechanism that this embodiment provided utilizes cylinder 7 and pawl 4 to connect, accomplishes the control to the feeding stroke simultaneously and avoids the work of ratchet pawl structural wear in the return stroke, has improved the life of ratchet pawl structure to fix cylinder 7 on ratchet rocker 1, simple structure, simple to operate has reduced the influence to the cold heading machine structure.

Example 2:

as shown in fig. 3 and 4, in the pawl lifting mechanism described in this embodiment, in addition to the features described in embodiment 1, in order to guide the lifted pawl 4 to return quickly and smoothly, a positioning bolt 13 is fixedly inserted into the ratchet rocker 1, and a tension spring 12 is connected between the pin 10 and the positioning bolt 13.

In order to reduce the abrasion of the ratchet shaft 6, a shaft sleeve 11 is arranged at the joint of the feeding ratchet 2, the ratchet rocker 1 and the ratchet shaft 6, the feeding ratchet 2 is fixed on the shaft sleeve 11, the ratchet rocker 1 is rotatably arranged outside the shaft sleeve 11, and the shaft sleeve 11 is in transmission connection with the ratchet shaft 6.

The pawl lifting mechanism that this embodiment provided, in the middle of the actual work process, when accomplishing a pay-off, ratchet rocker 1 return back, on pawl 4 got back to pay-off ratchet 2 more fast under the effect of the pulling force of extension spring 12, improved feeding efficiency, and played the guide effect to the return of pawl 4, stopped in the position except the teeth of a cogwheel tooth root of pay-off ratchet 2 when avoiding pawl 4 to fall, improved the reliability of pay-off efficiency and equipment.

Claims

1. A pawl lifting mechanism comprises a feeding ratchet wheel (2), a pawl (4), a ratchet wheel shaft (6), a ratchet wheel rocker (1) and a cylinder (7); the feeding ratchet mechanism is characterized in that the feeding ratchet wheel (2) is installed on a ratchet wheel shaft (6) in a transmission mode, a ratchet wheel rocker (1) is installed on the ratchet wheel shaft (6) in a rotatable mode, a pawl shaft (3) is arranged on the ratchet wheel rocker (1) in a rotatable mode, and a pawl (4) is fixed on the pawl shaft (3) and matched with the feeding ratchet wheel (2); be equipped with cylinder joint (8) on cylinder (7), cylinder joint (8) one end even has connecting block (9), be connected through round pin axle (10) between connecting block (9) and pawl (4).

2. The pawl lifting mechanism according to claim 1, characterized in that a cylinder block structure (5) is fixed to the ratchet rocker (1), and the cylinder (7) is fixed to the cylinder block structure (5).

3. The pawl lifting mechanism according to claim 1 or 2, characterized in that a positioning bolt (13) is fixedly inserted on the ratchet rocker (1), and a tension spring (12) is connected between the pin shaft (10) and the positioning bolt (13).

4. The pawl lifting mechanism according to claim 1 or 2, characterized in that a shaft sleeve (11) is arranged at the connection of the feeding ratchet wheel (2), the ratchet rocker (1) and the ratchet shaft (6), the feeding ratchet wheel (2) is fixed on the shaft sleeve (11), the ratchet rocker (1) is rotatably mounted outside the shaft sleeve (11), and the shaft sleeve (11) is in transmission connection with the ratchet shaft (6).

5. A pawl lifting mechanism according to claim 3, characterized in that a shaft sleeve (11) is arranged at the connection of the feed ratchet wheel (2), the ratchet rocker (1) and the ratchet shaft (6), the feed ratchet wheel (2) is fixed on the shaft sleeve (11), the ratchet rocker (1) is rotatably mounted outside the shaft sleeve (11), and the shaft sleeve (11) is in transmission connection with the ratchet shaft (6).