CN110843048A

CN110843048A - Positioning mechanism is used in processing of jumbo size log for agriculture and forestry

Info

Publication number: CN110843048A
Application number: CN201911187974.4A
Authority: CN
Inventors: 赖宇; 何玥霏; 黄丽莎
Original assignee: Guizhou Chuang Yu Biotechnology Co Ltd
Current assignee: WUHU WENQING MACHINERY EQUIPMENT DESIGN Co.,Ltd.
Priority date: 2019-11-28
Filing date: 2019-11-28
Publication date: 2020-02-28
Anticipated expiration: 2039-11-28
Also published as: CN110843048B

Abstract

The invention discloses a positioning mechanism for processing large-size logs for agriculture and forestry, which relates to the technical field of wood processing and comprises a bearing bracket, an outer sleeve, an inner sleeve, a liquid inlet pipe, a piston, an ejector pin and a driving mechanism.

Description

Positioning mechanism is used in processing of jumbo size log for agriculture and forestry

Technical Field

The invention belongs to the technical field of wood processing, and particularly relates to a positioning mechanism for processing large-size logs for agriculture and forestry.

Background

In the existing log processing process, a machine tool or a lathe or similar equipment is mostly adopted for clamping and positioning, and subsequent surface processing operations such as peeling, fine trimming and the like are carried out manually or mechanically.

In the clamping and positioning process of large-size logs (large in diameter and large in length) by utilizing a machine tool, a manual hand-cranking screw rod rotating mode is mostly adopted, although the clamping purpose can be realized, the clamping force is difficult to determine, the manual control is difficult to realize due to experience, and the efficiency is low due to manual operation. Especially for new staff, the phenomenon of eccentricity caused by over-small clamping force of the log in the rotating process is easy to occur, or the phenomenon of over-large clamping force causes the hand-cranking process to be very laborious and easy to damage the log in the morning. In addition, because the size of the log is large, the log is easy to deflect in the axial direction and even be eccentric due to overlarge torque in the machining process, and the machining precision is influenced. Therefore, it is necessary to design a positioning device suitable for processing large-size logs, which has stable positioning and precisely controllable clamping force.

Disclosure of Invention

The invention aims to provide a positioning mechanism for processing large-size logs for agriculture and forestry, which is used for solving the defects caused by the prior art.

The utility model provides a positioning mechanism is used in processing of jumbo size log for agriculture and forestry, includes support bracket, outer sleeve, inner skleeve, feed liquor pipe, piston, thimble and actuating mechanism, support bracket and outer sleeve adopt flange joint, and the one end that is close to on the outer sleeve and holds the bracket is connected with sealed lid one, inner skleeve sliding connection can move along the length direction of outer sleeve in the outer sleeve, and the one end that is close to on the inner skleeve holds the bracket is connected with sealed lid two, and the other end of inner skleeve is connected with the circular shape roof, the one end sliding connection of thimble is in the through-hole on the roof, piston sliding connection is in the inner skleeve and be connected with actuating mechanism, actuating mechanism can drive the thimble under the drive of piston and move along the length direction of outer sleeve in order to realize fixing a position the log, and a liquid discharge hole is formed in the liquid inlet pipe between the first sealing cover and the second sealing cover, and the inner sleeve and the piston can move forwards or backwards along the length direction of the outer sleeve by introducing or discharging hydraulic oil into or from the liquid inlet pipe.

Preferably, a limiting ring I is further fixed on the liquid inlet pipe between the liquid discharge hole and the sealing cover II.

Preferably, a limiting ring II is further fixed on the liquid inlet pipe between the liquid discharge hole and the sealing cover I.

Preferably, the one end that is close to the roof on the piston is the round platform form, still is connected with reset spring one between piston and the roof, the thimble has 2 at least, and every thimble corresponds a actuating mechanism, actuating mechanism includes guide bar, initiative wedge, driven wedge and reset spring two, the lower terminal surface of guide bar be the inclined plane and with the surface cooperation of the round platform form part of piston, guide bar sliding connection on the lateral wall of inner skleeve and its upper end be connected to the initiative wedge, the one end of driven wedge be connected to the thimble and with the cooperation of initiative wedge, still the cover is equipped with reset spring two on the thimble between being located driven wedge and roof.

Preferably, the two sides of the driven wedge-shaped block are also provided with sliding blocks, and one side, close to the inner sleeve, of the top plate is provided with a sliding rail matched with the sliding blocks.

Preferably, the inlet end of the liquid inlet pipe is connected with a hose through a quick connector.

Preferably, an inner hexagonal groove is further formed in the geometric center of one side, close to the support bracket, of the first sealing cover.

Preferably, the top plate has an outer diameter greater than an outer diameter of the outer sleeve.

The invention has the advantages that:

(1) the invention adopts the modes that the bearing bracket is fixed and the inner sleeve moves to realize the clamping and positioning of one end of the log, compared with the traditional tailstock positioning mode, the tailstock positioning mode does not need to manually shake the crank to realize the movement of the tailstock, and can be realized only by introducing hydraulic oil, thereby simplifying the positioning process and saving manpower.

(2) The invention adopts a mode that the top plate contacts the log and the thimble is locked and pressurizes until the pressure reaches a set value so as to realize the clamping and positioning of the log, the clamping force is more accurate, and meanwhile, the rotation condition of the log caused by overlarge torque is prevented.

Drawings

FIG. 1 is a schematic structural diagram of the present invention.

Fig. 2 is a side view of the present invention.

Fig. 3 is a sectional view taken along a-a in fig. 2.

Fig. 4 is a partially enlarged view of fig. 1 at B.

FIG. 5 is a schematic view of the inner and outer sleeves of the present invention.

Fig. 6 is a schematic structural view of a second sealing cover in the invention.

FIG. 7 is a schematic view of the liquid inlet pipe according to the present invention.

The device comprises a support bracket 1, an outer sleeve 2, an inner sleeve 3, a liquid inlet pipe 4, a piston 5, a thimble 6, a driving mechanism 7, a return spring I7, a driving mechanism 8, a guide rod 81, a driving wedge block 82, a driven wedge block 83, a return spring II 84, a pressurizing cavity 9, a sealing cover I10, a sealing cover II 11, a liquid discharge hole 12, a limiting ring I13, a limiting ring II 14, a sliding block 15, a sliding rail 16, a quick joint 17, a hose 18, an inner hexagonal groove 19 and a top plate 20.

Detailed Description

In order to make the technical means, the creation characteristics, the achievement purposes and the effects of the invention easy to understand, the invention is further described with the specific embodiments.

As shown in fig. 1 to 7, a positioning mechanism for processing large-size logs for agriculture and forestry comprises a support bracket 1, an outer sleeve 2, an inner sleeve 3, a liquid inlet pipe 4, a piston 5, a thimble 6 and a driving mechanism 8, wherein the support bracket 1 is connected with the outer sleeve 2 by a flange, one end of the outer sleeve 2 close to the support bracket 1 is connected with a first sealing cover 10, the inner sleeve 3 is slidably connected in the outer sleeve 2 and can move along the length direction of the outer sleeve 2, one end of the inner sleeve 3 close to the support bracket 1 is connected with a second sealing cover 11, the other end of the inner sleeve 3 is connected with a circular top plate 20, one end of the thimble 6 is slidably connected in a through hole on the top plate 20, the piston 5 is slidably connected in the inner sleeve 3 and is connected with the driving mechanism 8, the driving mechanism 8 can drive the thimble 6 to move along the length direction of the outer sleeve 2 under the, the liquid inlet pipe 4 sequentially penetrates through the supporting bracket 1, the first sealing cover 10 and the second sealing cover 11 to extend into the inner sleeve 3, a liquid outlet hole 12 is further formed in the liquid inlet pipe 4 between the first sealing cover 10 and the second sealing cover 11, hydraulic oil is introduced into or discharged from the liquid inlet pipe 4, and the inner sleeve 3 and the piston 5 can move forwards or backwards along the length direction of the outer sleeve 2.

In this embodiment, a first limiting ring 13 is further fixed on the liquid inlet pipe 4 between the liquid outlet hole 12 and the second sealing cover 11 for limiting the distance between the inner sleeve 3 and the support bracket 1, so as to prevent the inner sleeve 3 from moving to the position of the liquid outlet hole 12 to block the liquid outlet hole 12 in the process of resetting.

In this embodiment, a second limiting ring 14 is further fixed on the liquid inlet pipe 4 between the liquid discharge hole 12 and the first sealing cover 10, and the second limiting ring is used in cooperation with the first limiting ring 13 to ensure that the liquid discharge hole 12 is located in a safe interval and can keep smooth.

In this embodiment, the one end that is close to roof 20 on the piston 5 is the round platform form, still is connected with reset spring 7 between piston 5 and the roof 20, thimble 6 has 2 at least, and every thimble 6 corresponds a actuating mechanism 8, actuating mechanism 8 includes guide bar 81, initiative wedge 82, driven wedge 83 and two 84 reset springs, the lower terminal surface of guide bar 81 is the inclined plane and with the surface fit of the round platform form part of piston 5, guide bar 81 sliding connection is equipped with corresponding guiding hole on the lateral wall of inner skleeve 3, the cross section of guiding hole is rectangle and its upper end is connected to initiative wedge 82, the one end of driven wedge 83 is connected to thimble 6 and cooperates with initiative wedge 82, still overlaps on the thimble 6 that is located between driven wedge 83 and the roof 20 and is equipped with two 84 reset springs.

In this embodiment, the driven wedge block 83 is further provided with sliding blocks 15 at two sides, and the top plate 20 is provided with sliding rails 16 at one side close to the inner sleeve 3 for cooperating with the sliding blocks 15. Through the arrangement of the sliding block 15 and the sliding rail 16, the moving process of the thimble 6 is more stable, and deflection cannot be generated.

In this embodiment, the inlet end of the liquid inlet pipe 4 is connected to a hose 18 through a quick connector 17, and then connected to a hydraulic oil pump through the hose 18.

In this embodiment, an inner hexagonal groove 19 is further formed at a geometric center of the sealing cover 10 near one side of the supporting bracket 1, and the inner hexagonal groove 19 is used for facilitating the assembly and disassembly of the sealing cover 10, which can be realized by means of a wrench.

In this embodiment, the top plate 20 has an outer diameter greater than the outer diameter of the outer sleeve 2.

The working process and principle are as follows: firstly, the log is placed at a proper position, the distance between the top plate 20 and the end surface of the log is short, then hydraulic oil is introduced into the liquid inlet pipe 4, the hydraulic oil firstly enters the pressurizing cavity 9 through the liquid outlet hole 12, meanwhile, the hydraulic oil also partially enters the inner sleeve 3 and drives the piston 5 to move forwards, after the pressurizing cavity 9 and the inner sleeve 3 are synchronously filled with the hydraulic oil, according to the Pascal principle, the larger the stress area is, the smaller the pressure is, because the cross-sectional area of the inner sleeve 3 is larger than that of the piston 5, the pressure applied to the end surface of the inner sleeve 3 is larger, the inner sleeve 3 is driven to move forwards and finally contacts with the log, the pressure applied to the piston 5 is smaller, then the guide rod 81 is driven to move outwards along the diameter direction of the inner sleeve 3, the driving wedge block 82 moves and drives the driven wedge block 83 and the ejector pin 6 to extend forwards, and locking the log to prevent the log from rotating axially, continuously introducing hydraulic oil, pressurizing until the pressure reaches a set value, and finishing the axial positioning of the log when the clamping force reaches the set value. And finally, starting the motor again to drive the log to rotate, thereby realizing the subsequent processing process.

In the invention, the hose 18 can be externally connected with a pressure gauge, the pressure gauge and the hydraulic pump are both connected to the PLC, and the PLC is used for realizing the accurate control of the hydraulic oil pressure, thereby reducing the interference of human factors.

It will be appreciated by those skilled in the art that the invention may be embodied in other specific forms without departing from the spirit or essential characteristics thereof. The embodiments disclosed above are therefore to be considered in all respects as illustrative and not restrictive. All changes which come within the scope of or equivalence to the invention are intended to be embraced therein.

Claims

1. The utility model provides a positioning mechanism is used in processing of jumbo size log for agriculture and forestry which is characterized in that, including supporting bracket (1), outer sleeve (2), inner skleeve (3), feed liquor pipe (4), piston (5), thimble (6) and actuating mechanism (8), supporting bracket (1) adopts flange joint with outer sleeve (2), and the one end that is close to supporting bracket (1) on outer sleeve (2) is connected with sealed lid (10), inner skleeve (3) sliding connection is in outer sleeve (2) and can move along the length direction of outer sleeve (2), and the one end that is close to supporting bracket (1) on inner skleeve (3) is connected with sealed lid two (11), and the other end of inner skleeve (3) is connected with circular shape roof (20), the one end sliding connection of thimble (6) is in the through-hole on roof (20), piston (5) sliding connection is in inner skleeve (3) and be connected with actuating mechanism (8, actuating mechanism (8) can drive thimble (6) and remove in order to realize fixing a position the log along the length direction of outer sleeve (2) under the drive of piston (5), feed liquor pipe (4) pass in proper order and hold in bracket (1), sealed lid (10), sealed lid two (11) extend to inner sleeve (3), and still be equipped with outage (12) on feed liquor pipe (4) between sealed lid (10) and sealed lid two (11), through letting in or discharge hydraulic oil in to feed liquor pipe (4), inner sleeve (3) and piston (5) can be along the length direction of outer sleeve (2) forward or backward movement.

2. The positioning mechanism for processing the large-size round log for agriculture and forestry according to claim 1, wherein: a limiting ring I (13) is further fixed on the liquid inlet pipe (4) between the liquid outlet hole (12) and the sealing cover II (11).

3. The positioning mechanism for processing the large-size round log for agriculture and forestry according to claim 1, wherein: and a second limiting ring (14) is also fixed on the liquid inlet pipe (4) between the liquid outlet hole (12) and the first sealing cover (10).

4. The positioning mechanism for processing the large-size round log for agriculture and forestry according to claim 1, wherein: one end of the piston (5) close to the top plate (20) is in a circular truncated cone shape, a first return spring (7) is connected between the piston (5) and the top plate (20), at least 2 ejector pins (6) are arranged, each thimble (6) corresponds to one driving mechanism (8), each driving mechanism (8) comprises a guide rod (81), a driving wedge-shaped block (82), a driven wedge-shaped block (83) and a second return spring (84), the lower terminal surface of guide bar (81) is the inclined plane and with the surface cooperation of the round platform form part of piston (5), guide bar (81) sliding connection on the lateral wall of inner skleeve (3) and its upper end is connected to initiative wedge (82), the one end of driven wedge (83) is connected to thimble (6) and cooperates with initiative wedge (82), still overlaps on thimble (6) that is located between driven wedge (83) and roof (20) and is equipped with reset spring two (84).

5. The positioning mechanism for processing the large-size round log for agriculture and forestry according to claim 4, wherein: the two sides of the driven wedge-shaped block (83) are also provided with sliding blocks (15), and one side, close to the inner sleeve (3), of the top plate (20) is provided with a sliding rail (16) matched with the sliding blocks (15).

6. The positioning mechanism for processing the large-size round log for agriculture and forestry according to claim 1, wherein: the inlet end of the liquid inlet pipe (4) is connected with a hose (18) through a quick connector (17).

7. The positioning mechanism for processing the large-size round log for agriculture and forestry according to claim 1, wherein: an inner hexagonal groove (19) is further formed in the geometric center of one side, close to the supporting bracket (1), of the first sealing cover (10).

8. The positioning mechanism for processing the large-size round log for agriculture and forestry according to claim 1, wherein: the outer diameter of the top plate (20) is larger than the outer diameter of the outer sleeve (2).