阅读说明：本技术 一种橡胶树自动夹紧装置 (Automatic clamping device for rubber tree ) 是由 张喜瑞 邢洁洁 曹超 付威 汝绍锋 李粤 梁栋 张燕 于 2019-12-11 设计创作，主要内容包括：本发明公开了一种橡胶树自动夹紧装置,包括包括楔块进给装置、导杆轴向往复运动装置和多种传感器；楔块进给装置呈对称设置,且楔块进给装置通过活动导杆和固定导杆与夹紧框架相连接。本发明的有益效果是：采用楔块丝杆进给式压紧的自动楔块式橡胶树夹紧装置夹紧橡胶树,实现对橡胶树的稳定夹紧,该装置不仅机械效率高,而且机构灵活,可实现橡胶树上下半径偏差较大的橡胶树的夹紧,适用于橡胶树自动割胶的自动夹紧部分。(The invention discloses an automatic clamping device for a rubber tree, which comprises a wedge block feeding device, a guide rod axial reciprocating device and a plurality of sensors, wherein the wedge block feeding device is arranged on the guide rod axial reciprocating device; the wedge block feeding devices are symmetrically arranged and are connected with the clamping frame through movable guide rods and fixed guide rods. The invention has the beneficial effects that: the automatic wedge type rubber tree clamping device adopting wedge lead screw feeding type compression to clamp a rubber tree stably, the device is high in mechanical efficiency, flexible in mechanism, capable of clamping the rubber tree with large radius deviation from top to bottom, and suitable for automatic rubber tapping automatic clamping parts of the rubber tree.)

1. An automatic clamping device for rubber trees comprises a wedge block feeding device, a guide rod axial reciprocating device and a plurality of sensors; the method is characterized in that: the wedge block feeding devices are symmetrically arranged and are connected with the clamping frame (1) through movable guide rods (2) and fixed guide rods (3);

the clamping frame (1) is provided with six upper clamping mechanisms with the same size and lower clamping mechanisms which are connected with the movable guide rod (2) through a connecting rod connecting hole (102) and two pairs of clamping frames and movable guide rod connecting holes (101) and clamping frames and fixed guide rod connecting holes (103), wherein the clamping frames and the movable guide rod connecting holes (101) are connected with the movable guide rod (2), the contact surface is a movable guide rod curved surface (201), the clamping frames and the movable guide rod connecting holes (101) are in clearance fit with the movable guide rod curved surface (201), the fixed guide rod (3) and the clamping frame of the clamping frame (1) are connected with the fixed guide rod connecting holes (103), the contact surface is a fixed guide rod curved surface (301), the clamping frames and the fixed guide rod connecting holes (103) are in interference fit with the fixed guide rod curved surface (301), and the movable guide rod curved surface (201) is provided with a spring, the movable guide rail plane (202) is in contact with the wedge guide rail plane (403), and is respectively connected with the movable guide rail hole (203) and the fixed guide rod hole (303) through a key hole (401) of the guide rail (4) by bolts, the clamping frame (1) is also connected with an ejector rod (7), and the ejector rod (7) consists of an ejector rod curved surface (701) and an ejector rod sensor plane (702);

the wedge block feeding device consists of a wedge block guide rail (4) and a wedge block (5), the wedge block (5) is connected with the wedge block guide rail (4) through a lead screw (9), three holes are formed in the wedge block (5), two holes are wedge block and guide rod matching holes (505) with the same size, the other hole is a threaded wedge block and lead screw matching hole (504), a wedge block plane (501) which is firstly contacted with a rubber tree, a wedge block fillet (502) and a wedge block upper clamping rubber tree plane (503) are further formed in the wedge block (5), a wedge block guide rail key hole (401), a wedge block guide rail plane (402), a wedge block guide rail and movable guide rod or fixed guide rod contact plane (403), a wedge block guide rail and guide rod matching hole (404) and a wedge block guide rail and lead screw matching hole (405) are formed in the wedge block guide rail (4), and the threaded hole (504) is connected with the lead screw (, the wedge block guide rail and lead screw matching hole (405) and a motor provide wedge block moving power through a belt, a wedge block through hole (505) in the wedge block (5) is connected with two identical wedge block guide rails and guide rod matching holes (404) in the wedge block guide rail (4) through a guide rod (10), and a clamping rubber tree plane (503) on the wedge block is firstly contacted with a rubber tree.

2. The automatic clamping device for rubber trees according to claim 1, characterized in that: the movable guide rod (2) is in clearance fit with the clamping frame on the clamping frame (1) and the movable guide rod connecting hole (101).

3. The automatic clamping device for rubber trees according to claim 1, characterized in that: the fixed guide rod (3) is in interference fit with the clamping frame on the clamping frame (1) and the fixed guide rod connecting hole (103).

4. The automatic clamping device for rubber trees according to claim 1, characterized in that: the angle formed by the wedge block guide rails (4) and the symmetrical axis of the clamping frame (1) is 15-30 degrees, and the two wedge block guide rails (4) are symmetrical about the symmetrical axis of the clamping frame (1) during installation.

5. The automatic clamping device for rubber trees according to claim 1, characterized in that: the movable guide rod (2) is in contact with the clamping frame of the clamping frame (1) and the movable guide rod connecting hole (101), and a spring (6) is further arranged on the curved surface (201) of the movable guide rod.

6. The automatic clamping device for rubber trees according to claim 1, characterized in that: one clamping frame (1), two movable guide rods (2), two fixed guide rods (3), two wedge block guide rails (4), two wedge blocks (5), two springs (6), two lead screws (9), four guide rods (10) and one ejector rod (7) form an upper clamping mechanism and a lower clamping mechanism, the upper clamping mechanism and the lower clamping mechanism are connected through six connecting rods (8), and the upper clamping mechanism and the lower clamping mechanism are respectively provided with a set of sensor control system.

Technical Field

The invention relates to a clamping device, in particular to an automatic rubber tree clamping device, and belongs to the technical field of agricultural machinery.

Background

The total planting area of rubber trees in China has been increased from 51.8 ten thousand to 107 ten thousand, the tapping area is increased from 30 ten thousand to 62.7 ten thousand, and the annual yield of dried rubber is increased from 18.8 ten thousand to 75 ten thousand in 1985. The yield per unit level increased from 630 kg/in 1985 to 1200 thousand kg/in 2011. The characteristic of high industrial relevance of natural rubber as an important industrial raw material determines the universality of the market on the demand. Due to rapid development of the automobile industry and gradual shift of the world tire factories, the consumption amount of domestic natural rubber is increased year by year, and the annual increase is large in recent years, from 71 ten thousand t in 1995 to 390 ten thousand t in 2011, and from 2002, 9 continuous years are the first in the world. The domestic natural rubber self-sufficiency rate is reduced from 60.6% in 1995 to 19.3% in 2011, which is lower than 10.7% of the international strategic safety alert line of 30%.

In recent years, the price of rubber is continuously low, and rubber tapping production is performed at night, so that the production environment condition is poor, the rubber worker is seriously aged, and the attraction of young labor force engaged in rubber tapping production is insufficient, so that the shortage of the rubber worker is serious. The phenomena of tree cutting, cutting and the like occur in rubber planting areas in Hainan and Yunnan, and the operation and recruitment of some rubber-oriented farms in Guangdong agricultural reclamation are difficult.

Disclosure of Invention

The invention aims to solve the problems and provide an automatic clamping device for rubber trees.

The invention realizes the purpose through the following technical scheme: an automatic clamping device for rubber trees comprises a wedge block feeding device, a guide rod axial reciprocating device and a plurality of sensors; the wedge block feeding devices are symmetrically arranged and are connected with the clamping frame through movable guide rods and fixed guide rods;

the clamping frame is provided with six upper clamping mechanisms and six lower clamping mechanisms with the same size, the upper clamping mechanisms and the lower clamping mechanisms are connected with the movable guide rod connecting holes and the clamping frames and the fixed guide rod connecting holes through connecting rod connecting holes and two pairs of clamping frames and movable guide rod connecting holes, the clamping frames and the movable guide rod connecting holes are in clearance fit with the movable guide rod curved surfaces, the fixed guide rods and the clamping frames of the clamping frame are connected with the fixed guide rod connecting holes, the contact surfaces are the fixed guide rod curved surfaces, the clamping frames and the fixed guide rod connecting holes are in interference fit with the fixed guide rod curved surfaces, springs are arranged on the movable guide rod curved surfaces, the movable guide rail planes are in contact with the wedge block guide rail planes, and the movable guide rail holes and the fixed guide rod holes are respectively connected with bolts through key holes of the guide rails, the clamping frame and the wedge block feeding device are in dynamic connection, the clamping frame is also connected with an ejector rod, and the ejector rod is composed of an ejector rod curved surface and an ejector rod mounting sensor plane;

the wedge block feeding device consists of a wedge block guide rail and a wedge block, the wedge block is connected with the wedge block guide rail through a lead screw, three holes are formed in the wedge block, two holes are wedge block and guide rod matching holes with the same size, the other hole is a threaded wedge block and lead screw matching hole, a wedge block plane which is firstly contacted with a rubber tree, a wedge block fillet and a wedge block upper clamping rubber tree plane are further formed in the wedge block, a wedge block guide rail key hole, a wedge block guide rail plane, a wedge block guide rail and movable guide rod or fixed guide rod contact plane, a wedge block guide rail and guide rod matching hole and a wedge block guide rail and lead screw matching hole are formed in the wedge block guide rail, the threaded hole is connected with the lead screw, the wedge block moving power is provided for the wedge block through hole through a guide rod and two identical wedge block guide rails and guide rod matching holes in the wedge block guide rail, the plane of the wedge block for clamping the rubber tree is firstly contacted with the rubber tree.

As a still further scheme of the invention: the movable guide rod is in clearance fit with the clamping frame and the movable guide rod connecting hole on the clamping frame.

As a still further scheme of the invention: the fixed guide rod and the clamping frame on the clamping frame are in interference fit with the fixed guide rod connecting hole.

As a still further scheme of the invention: the angle formed by the wedge block guide rails and the symmetrical axis of the clamping frame is 15-30 degrees, and the two wedge block guide rails are symmetrical about the symmetrical axis of the clamping frame when the wedge block guide rails and the clamping frame are installed.

As a still further scheme of the invention: the movable guide rod is contacted with the clamping frame of the clamping frame and the movable guide rod connecting hole, and a spring is further arranged on the curved surface of the movable guide rod.

As a still further scheme of the invention: one clamping frame, two movable guide rods, two fixed guide rods, two wedge block guide rails, two wedge blocks, two springs, two lead screws, four guide rods and one ejector rod form an upper clamping mechanism and a lower clamping mechanism, the upper clamping mechanism and the lower clamping mechanism are connected through six connecting rods, and the upper clamping mechanism and the lower clamping mechanism are respectively provided with a set of sensor control system.

The invention has the beneficial effects that: this rubber tree automatic clamping device reasonable in design adopts the automatic wedge block formula rubber tree clamping device that voussoir lead screw feed formula compressed tightly to press from both sides tight rubber tree, realizes the stable clamp tight to the rubber tree, and the device is not only mechanical efficiency high, and the mechanism is nimble moreover, can realize the tight clamp of the great rubber tree of radius deviation about the rubber tree, is applicable to the automatic clamping part of rubber tree tapping.

Drawings

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

FIG. 2 is a schematic view of a clamping frame according to the present invention;

FIG. 3 is a schematic view of a movable guide bar according to the present invention;

FIG. 4 is a schematic view of the structure of the fixed guide bar of the present invention;

FIG. 5 is a schematic view of the wedge guide configuration of the present invention;

FIG. 6 is a rear view of the wedge guide of the present invention;

FIG. 7 is a schematic view of the wedge construction of the present invention;

FIG. 8 is a schematic view of a wedge compression configuration of the present invention;

FIG. 9 is a schematic view of the wedge pressing portion of the present invention;

FIG. 10 is a schematic view of the ejector pin structure of the present invention;

FIG. 11 is a schematic view of a clamping mechanism according to the present invention;

fig. 12 is a schematic structural diagram of a sensor control system according to the present invention.

In the figure: 1. a clamping frame, 2, a movable guide rod, 3, a fixed guide rod, 4, a wedge guide rod, 5, a wedge, 6, a spring, 7, a push rod, 8, a connecting rod, 9, a lead screw, 10, a guide rod, 101, a clamping frame and movable guide rod connecting hole, 102, an upper clamping mechanism and a lower clamping mechanism pass through a connecting rod connecting hole, 103, a clamping frame and fixed guide rod connecting hole, 104, a clamping frame and push rod connecting hole, 201, a movable guide rod curved surface, 202, a movable guide rod and wedge guide rail contact plane, 203, a movable guide rod and wedge guide rail connecting hole, 301, a fixed guide rod curved surface, 302, a fixed guide rod and wedge guide rail contact plane, 303, a fixed guide rod and wedge guide rail connecting hole, 401, a wedge guide rail key hole, 402, a wedge guide rail plane, 403, a wedge guide rail and movable guide rod or fixed guide rod contact plane, 404, the wedge block guide rail and lead screw matching hole 501, the wedge block plane 502, the wedge block fillet 503, the wedge block upper clamping rubber tree plane 504, the wedge block and lead screw matching hole 505, the wedge block and guide rod matching hole 701, the ejector rod curved surface and 702 and the ejector rod are provided with a sensor plane.

Detailed Description

The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.

Referring to fig. 1 to 12, an automatic clamping device for rubber trees includes a wedge feeding device, a guide rod axial reciprocating device and various sensors; the wedge block feeding devices are symmetrically arranged and are connected with the clamping frame 1 through movable guide rods 2 and fixed guide rods 3;

the clamping frame 1 is provided with six upper clamping mechanisms and six lower clamping mechanisms with the same size, and the upper clamping mechanisms and the lower clamping mechanisms are connected with a movable guide rod connecting hole 101 and a clamping frame and a fixed guide rod connecting hole 103 through a connecting rod connecting hole 102 and two pairs of clamping frames and movable guide rod connecting holes 101, wherein the clamping frame and the movable guide rod connecting hole 101 are connected with a movable guide rod 2, the contact surface is a movable guide rod curved surface 201, the clamping frame and the movable guide rod connecting hole 101 are in clearance fit with the movable guide rod curved surface 201, the fixed guide rod 3 and the clamping frame 1 are connected with the fixed guide rod connecting hole 103, the contact surface is a fixed guide rod curved surface 301, the clamping frame and the fixed guide rod connecting hole 103 are in interference fit with the fixed guide rod curved surface 301, the movable guide rod curved surface 201 is provided with a spring 6, the movable guide rail plane 202 is in contact with a wedge guide rail plane 403, and is respectively connected, the clamping frame 1 and the wedge block feeding device are dynamically connected, the clamping frame 1 is also connected with an ejector rod 7, and the ejector rod 7 is composed of an ejector rod curved surface 701 and an ejector rod mounting sensor plane 702;

the wedge block feeding device is composed of a wedge block guide rail 4 and a wedge block 5, the wedge block 5 is connected with the wedge block guide rail 4 through a lead screw 9, three holes are formed in the wedge block 5, two holes are wedge block and guide rod matching holes 505 with the same size, the other hole is a threaded wedge block and lead screw matching hole 504, a wedge block plane 501 which is firstly contacted with a rubber tree, a wedge block fillet 502 and a wedge block upper clamping rubber tree plane 503 are further formed in the wedge block 5, a wedge block guide rail key hole 401, a wedge block guide rail plane 402, a wedge block guide rail and movable guide rod or fixed guide rod contact plane 403, a wedge block guide rail and guide rod matching hole 404 and a wedge block guide rail and lead screw matching hole 405 are formed in the wedge block guide rail 4, the threaded hole 504 is connected with the lead screw 9, wedge block moving power is provided for a motor through a belt at the wedge block guide rail and lead screw hole 405, a wedge block through hole 505 in the wedge block 5 is connected with two 404, the rubber tree clamping plane 503 on the wedge block contacts with the rubber tree, when the clamping device moves towards the rubber tree, the rubber tree and the wedge block plane 503 push the wedge block guide rail 4, so that the sliding guide rail 2 is pressed, the spring 6 starts to compress, when the clamping device continues to move, the rubber tree just passes through the wedge block round angle 502, the movable guide rod 2 is acted by the spring 6, the wedge block guide rail 4 is pushed to move along the key hole 401 on the wedge block guide rail 4, when the rubber tree touches the sensor at the position of the sensor plane 702 on the ejector rod 7, meanwhile, the lead screw 9 starts to feed, the wedge block 5 moves along the guide rod 10, the wedge block plane 501 slowly clamps the rubber tree, when the preset pressure value is reached, the pressure sensor transmits a command, and the lead screw 9 stops feeding.

Further, in the embodiment of the present invention, the movable guide rod 2 is in clearance fit with the clamping frame on the clamping frame 1 and the movable guide rod connecting hole 101, so as to ensure a sufficient clearance, so that the movable guide rod 2 can move axially.

Further, in the embodiment of the present invention, the fixed guide rod 3 and the clamping frame on the clamping frame 1 are in interference fit with the fixed guide rod connection hole 103, so as to ensure that the fixed guide rod 3 is accurately positioned.

Further, in the embodiment of the present invention, the angle between the wedge rails 4 and the symmetry axis of the clamping frame 1 is 15 ° to 30 °, and the two wedge rails 4 are symmetric about the symmetry axis of the clamping frame 1 when installed.

Further, in the embodiment of the present invention, besides the movable guide rod 2 contacts with the clamping frame of the clamping frame 1 and the movable guide rod connecting hole 101, the curved surface 201 of the movable guide rod is further provided with a spring 6, so that when the wedge 5 is pressed, the guide rod moves outwards, and when a rubber tree passes through the clamping rubber tree plane 503 on the wedge, the movable guide rod 2 can return the wedge guide rail 4 to its position under the action of the spring 6.

Furthermore, in the embodiment of the invention, an upper clamping mechanism and a lower clamping mechanism are composed of one clamping frame 1, two movable guide rods 2, two fixed guide rods 3, two wedge block guide rails 4, two wedge blocks 5, two springs 6, two lead screws 9, four guide rods 10 and one ejector rod 7, the upper clamping mechanism and the lower clamping mechanism are connected through six connecting rods 8, and the upper clamping mechanism and the lower clamping mechanism are respectively provided with a set of sensor control system.

The working principle is as follows: when the automatic rubber tree clamping device is used, a stepping mechanism of an automatic tapping robot drives a clamping mechanism to move towards a rubber tree, when the radius of the rubber tree is smaller, a sensor on an ejector rod 7 is directly triggered, a signal is given to a motor, so that a lead screw 9 is driven to rotate clockwise, a wedge block 5 moves towards the inside of a clamping frame 1 under the action of the lead screw 9 and a guide rod 10, when a wedge block plane 501 contacts the surface of the rubber tree, when the clamping force reaches a preset value, the sensor gives a signal, the motor stops, the lead screw also stops rotating, when the radius of the rubber tree is larger, the rubber tree contacts a wedge block plane 503 first, at the moment, the rubber tree continues to advance towards the inside of the clamping frame 1, a movable guide rod 2 is subjected to pressure and moves outwards, a spring 6 is subjected to the pressure, and when the rubber tree passes through a fillet 502 on the wedge block 5, the movable guide rod 2 is, gradually restoring the position, when the rubber tree touches the ejector rod 7, the steps are consistent, after rubber tapping is finished, the system gives a signal, the motor operates, the screw rod 9 rotates reversely, the wedge block 5 is pushed to the tail end, the travel switch is triggered, the motor stops, the stepping mechanism gradually withdraws from the rubber tree, and the next rubber tree is searched.

It will be evident to those skilled in the art that the invention is not limited to the details of the foregoing illustrative embodiments, and that the present invention may be embodied in other specific forms without departing from the spirit or essential attributes thereof. The present embodiments are therefore to be considered in all respects as illustrative and not restrictive, the scope of the invention being indicated by the appended claims rather than by the foregoing description, and all changes which come within the meaning and range of equivalency of the claims are therefore intended to be embraced therein. Any reference sign in a claim should not be construed as limiting the claim concerned.

Furthermore, it should be understood that although the present description refers to embodiments, not every embodiment may contain only a single embodiment, and such description is for clarity only, and those skilled in the art should integrate the description, and the embodiments may be combined as appropriate to form other embodiments understood by those skilled in the art.