CN209998455U

CN209998455U - Impact shearing device for screw machine

Info

Publication number: CN209998455U
Application number: CN201920666643.8U
Authority: CN
Inventors: 张凯锋; 俞华杰; 陈舰琳
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: 2020-01-31
Anticipated expiration: 2029-05-10

Abstract

The utility model discloses an impact shearing device for screw machine, it includes drive structure and cutter two parts, the cutter includes cutter body, pressure spring, kicking block and cutting edge, cutter body end is connected with the drive structure transmission, is equipped with the mounting hole that is used for installing the kicking block at the other end of cutter body, is equipped with the pressure spring in the mounting hole, the kicking block is the columnar body of taking stair structure, and kicking block end movable mounting is in the mounting hole top is equipped with the foraminiferous end cover of restriction kicking block displacement, and the below and the pressure spring of kicking block are connected fixedly, when the pressure spring is in free state, there is the impact space between the bottom surface of kicking block and mounting hole, the cutting edge that the other end of kicking block was fixed with the cutter.

Description

Impact shearing device for screw machine

Technical Field

The utility model relates to an kinds of production facility, especially kind are used for the impact shearing mechanism of screw machine.

Background

The cutting mechanism is an important mechanism for executing feeding work of the cold header, and the quality of a cut surface of a raw material often has a great influence on the quality of a cold-headed product; in the traditional method, the material shearing is accelerated through a cam, so that the high precision requirement cannot be met, and the service life of a die is easily influenced by the unevenness of a cut surface.

SUMMERY OF THE UTILITY MODEL

The utility model aims at providing kinds of impact shearing devices for screw machines with high cutting speed and high shearing quality for solving the defects of the prior art.

In order to achieve the purpose, the utility model discloses an impact shearing device for screw machine, it includes drive structure, cutter and frame, the cutter includes cutter body, pressure spring, ram and cutting edge, cutter body end is connected with drive structure transmission, is equipped with the mounting hole that is used for installing the ram in the other end of cutter body, is equipped with the pressure spring in the mounting hole, the ram is the columnar body that has ladder structure, ram end movable mounting is in the mounting hole, be equipped with the foraminiferous end cover that limits the ram displacement at the mounting hole top, foraminiferous end cover is fixed on the cutter body, when not receiving the impact, foraminiferous end cover and the ladder structure on the ram laminating, the below of ram is connected with the pressure spring and is fixed, when the pressure spring is in free state, there is the impact space between the bottom surface of ram and mounting hole, the other end of ram is fixed with the cutting edge.

The driving structure comprises a driving gear, an eccentric connecting rod, a wedge-shaped cam and a transmission roller, the driving gear is installed on the rack, the end of the eccentric connecting rod is connected with the driving gear to form a crank rocker mechanism, the end is connected with the wedge-shaped cam, the wedge-shaped cam is installed on the rack in a sliding mode, the transmission roller is arranged on the cutter body, and the transmission roller and the wedge-shaped cam form a cam mechanism.

In order to reduce the damage of the cutter body in the transmission process, the transmission roller is connected with the cutter body through a bearing.

In order to reduce the damage of the cutter body in the work and reduce the maintenance cost, an impact cushion block is fixed in a mounting hole of the cutter body, and the impact cushion block is fixed with ends of a pressure spring.

In order to improve the machining precision of impact shearing, a slide rail is arranged at the working position of the cutting edge and comprises a guide rail and a second guide rail, the guide rail and the second guide rail are respectively in sliding connection with the two sides of the cutting edge, and the function of stabilizing the movement of the cutting edge is achieved during working.

In order to avoid the cutter edge from being clamped in the shearing work, the cutter edge is provided with a chamfer and an oil filling hole, and the oil filling hole is communicated with two side surfaces of the cutter edge.

The utility model discloses a strike shearing mechanism for screw machine that obtains utilizes pressure spring and impact piece driving blade to carry out blank work, compares traditional method, and cut-off speed is faster, can form better cutting surface in material stick fracture department, is favorable to the shaping quality of product and the improvement of mould life-span.

Drawings

Fig. 1 is a schematic structural view of an embodiment 1 of an impact shearing device for a screw machine according to the present invention;

FIG. 2 is an enlarged schematic view at A in FIG. 1;

FIG. 3 is an enlarged schematic view at B in FIG. 2;

FIG. 4 is an enlarged schematic view at C of FIG. 1;

FIG. 5 is a schematic structural view of a driving structure of the impact shearing device for the screw machine according to the present invention;

FIG. 6 is a schematic view of a cutter structure of an embodiment 1 of the impact shearing apparatus for a screw machine according to the present invention;

FIG. 7 is a schematic view showing the operation of the impact shearing apparatus in embodiment 1;

fig. 8 is a schematic structural view of an embodiment 2 of the impact shearing device for the screw machine according to the present invention;

FIG. 9 is an enlarged schematic view at D of FIG. 8;

FIG. 10 is a schematic structural view of an embodiment 3 of the impact shearing apparatus for a screw machine according to the present invention;

fig. 11 is an enlarged schematic view at E in fig. 10.

In the figure, a driving structure 1, a cutter 2, a material rod 3, a frame 4, a slide rail 5, a driving gear 11, an eccentric connecting rod 12, a wedge cam 13, a transmission roller 14, a bearing 15, a cutter body 21, a pressure spring 22, an impact block 23, a blade 24, an impact cushion block 25, a perforated end cover 26, a chamfer 27, an oil injection hole 28, an -th guide rail 51, a second guide rail 52, a mounting hole 210, an impact gap 211 and a stepped structure 230.

Detailed Description

The present invention will be further described in with reference to the following drawings and examples.

Example 1:

the impact shearing device for the screw machine described in this embodiment includes, as shown in fig. 1 and fig. 2, a driving structure 1, a cutter 2 and a frame 4, where the cutter 2 includes a cutter body 21, a pressure spring 22, an impact block 23 and a blade 24, an end of the cutter body 21 is in transmission connection with the driving structure 1, another end of the cutter body 21 is provided with a mounting hole 210 for mounting the impact block 23, the pressure spring 22 is arranged in the mounting hole 210, as shown in fig. 3, the impact block 23 is a cylindrical body with a stepped structure 230, an end of the impact block 23 is movably mounted in the mounting hole 210, a perforated end cap 26 for limiting displacement of the impact block 23 is arranged at a top of the mounting hole 210, the perforated end cap 26 is fixed on the cutter body 21, when the impact is not applied, the perforated end cap 26 is attached to the stepped structure 230 on the impact block 23, a lower portion of the impact block 23 is connected and fixed to the pressure spring 22, and when the pressure spring 22 is in a free state, an impact gap 211 exists between the impact block 23 and another end is fixed.

As shown in fig. 4 and 5, the driving structure 1 includes a driving gear 11, an eccentric link 12, a wedge cam 13 and a transmission roller 14, the driving gear 11 is mounted on the frame 4, an end of the eccentric link 12 is connected with the driving gear 11 to form a crank-rocker mechanism, an end is connected with the wedge cam 13, the wedge cam 13 is slidably mounted on the frame 4, the transmission roller 14 is disposed on the cutter body 21, and the transmission roller 14 and the wedge cam 13 form a cam mechanism.

As shown in fig. 6, in order to reduce the damage of the cutter body 21 during the driving process, the driving roller 14 is connected with the cutter body 21 through a bearing 15.

In the actual working process, the wedge cam 13 is driven by the eccentric connecting rod 12 to move to drive the transmission roller 14, so that the cutter body 21 rapidly moves towards the feeding direction, and impacts the impact block 23, so that the impact block 23 drives the blade 24 to complete the cutting operation of the bar under the pushing of the impact force and the elasticity of the pressure spring 22, as shown in fig. 5 and 7.

The impact shearing device for the screw machine provided by the embodiment utilizes the pressure spring 22 and the impact block 23 to drive the blade 24 to cut materials, compared with the traditional method, the cutting speed is higher, a better cutting surface can be formed at the fracture of the material rod 3, and the forming quality of a product and the service life of a die are favorably improved.

Example 2:

in the impact shearing apparatus for a screw machine described in this embodiment, as shown in fig. 8 and 9, in addition to the features described in embodiment 1, in order to reduce damage to the cutter body 21 during operation and maintenance cost, an impact pad 25 is fixed in the mounting hole 210 of the cutter body 21, and the impact pad 25 is fixed to ends of the compression spring 22 instead of the cutter body 21.

According to the impact shearing device for the screw machine, when the impact is actually finished, the impact cushion block 25 replaces the cutter body 21 to collide with the impact block 23, so that the loss of the cutter body 21 is reduced, and the maintenance cost is reduced.

Example 3:

in the impact shearing device for the screw machine described in this embodiment, as shown in fig. 10 and 11, in addition to the features of embodiment 2, in order to further step improve the machining precision of impact shearing, a slide rail 5 is provided on the working position of the blade 24, the slide rail 5 includes a -th guide rail 51 and a second guide rail 52, and the -th guide rail 51 and the second guide rail 52 are respectively connected with the blade 24 in a sliding manner, and play a role in stabilizing the movement of the blade 24 during working.

In order to avoid the blade 24 from jamming in the shearing operation, the blade 24 is provided with a chamfer 27 and an oil hole 28, as shown in fig. 11, the oil hole 28 communicating with both side faces of the blade 24.

According to the impact shearing device for the screw machine, when the impact is actually finished, the blade 24 moves along the sliding rail 5, the vibration of the blade 24 is limited by the -th guide rail 51 and the -th guide rail 52, the influence of the impact vibration on the movement of the blade 24 is reduced, and the machining precision is improved.

Claims

The utility model provides a impact shearing device for screw machine, it includes drive structure (1), cutter (2) and frame (4), characterized by that cutter (2) include cutter body (21), pressure spring (22), impact block (23) and cutting edge (24), cutter body (21) end is connected with drive structure (1) transmission, be equipped with mounting hole (210) that is used for installing impact block (23) in the other end of cutter body (21), be equipped with pressure spring (22) in mounting hole (210), impact block (23) is the columnar body of taking stair structure (230), impact block (23) end movable mounting is in mounting hole (210), be equipped with foraminiferous end cover (26) that restrict impact block (23) displacement at mounting hole (210) top, foraminiferous end cover (26) are fixed on cutter body (21), when not having impacted, foraminiferous end cover (26) and impact block (230) on impact block (23) are laminated, impact block (23) below and pressure spring (22) are connected fixedly, when the free state impact block (23) and the impact block (211) exist between the free end (539).
2. The impact shearing device for the screw machine according to claim 1, wherein the driving structure (1) comprises a driving gear (11), an eccentric connecting rod (12), a wedge cam (13) and a transmission roller (14), the driving gear (11) is mounted on the frame (4), the end of the eccentric connecting rod (12) is connected with the driving gear (11) to form a crank-rocker mechanism, the other end is connected with the wedge cam (13), the wedge cam (13) is slidably mounted on the frame (4), the transmission roller (14) is arranged on the cutter body (21), and the transmission roller (14) and the wedge cam (13) form a cam mechanism.
3. Impact cutting apparatus for screwdrivers according to claim 2, characterised in that the transmission roller (14) is connected to the cutter body (21) by means of a bearing (15).
4. The impact shearing device for the screw machine according to claim 1, 2 or 3, wherein an impact pad (25) is fixed in the mounting hole (210) of the cutter body (21), and the impact pad (25) is fixed with ends of the pressure spring (22).
5. The impact cutting device for the screw machine according to the claim 1, 2 or 3, characterized in that the slide rail (5) is arranged on the working position of the blade (24), the slide rail (5) comprises the th guide rail (51) and the second guide rail (52), the th guide rail (51) and the second guide rail (52) are respectively connected with the two sides of the blade (24) in a sliding way.
6. The impact shearing device for the screw machine according to claim 4, wherein a slide rail (5) is arranged at the working position of the blade (24), the slide rail (5) comprises an th guide rail (51) and a second guide rail (52), and the th guide rail (51) and the second guide rail (52) are respectively connected with two sides of the blade (24) in a sliding manner.
7. The impact shearing apparatus for screw machine according to claim 5, wherein said blade (24) side is provided with a chamfer (27) and an oil hole (28), and said oil hole (28) communicates with both side surfaces of said blade (24).
8. The impact shearing apparatus for screw machine according to claim 6, wherein said blade (24) side is provided with a chamfer (27) and an oil hole (28), and said oil hole (28) communicates with both side surfaces of said blade (24).