CN201128099Y

CN201128099Y - Device for preventing gnawing head and chopping tail of broad band sander grinding pad

Info

Publication number: CN201128099Y
Application number: CNU2007200426832U
Authority: CN
Inventors: 刘加俭; 朱俭稼
Original assignee: SUZHUO INDUSTRY PARK SANDA MACHINERY Co Ltd
Current assignee: SUZHUO INDUSTRY PARK SANDA MACHINERY Co Ltd
Priority date: 2007-11-23
Filing date: 2007-11-23
Publication date: 2008-10-08
Anticipated expiration: 2017-11-23

Abstract

The utility model relates to a head-gnawing tail-shaving proof device of an abrasive pad of a wide belt sander, comprising a driving mechanism and an electric control part. A double-piston air cylinder is installed at the middle position below an abrasive bracket. Link mechanisms are respectively installed between both ends of the abrasive bracket and a height adjusting mechanism. The link mechanism is hinge-jointed by three connecting links. An upper connecting link is hinge-jointed with the abrasive bracket. A lower connecting link is hinge-jointed with the height adjusting mechanism. A middle connecting link is hinge-jointed with a piston rod of the air cylinder. The action of the air cylinder is controlled via a solenoid pilot actuated valve by a PLC. The piston rod makes horizontal movement to drive the link mechanisms so that the abrasive pad does up-and-down movement along a bracket. When a workpiece enters the setting position, the PLC outputs signals, the piston rod of the air cylinder extends out, and the abrasive pad goes to the working position; when the workpiece leaves the setting position, the PLC outputs signals, the piston rod of the air cylinder retracts, and the abrasive pad leaves the working position. The phenomenon of head-gnawing tail-shaving in a sanding technology is efficiently eliminated, and the chamfer angles appearing at the upper and the lower surfaces at both ends of the abrasive pad in feeding direction is avoided, and the head-gnawing tail-shaving proof device is very practical.

Description

The anti-head of gnawing of wide-belt sander mill pad is cut tail apparatus

Technical field

The utility model relates to a kind of wide-belt sander, and the anti-head of gnawing that is specifically related to wide-belt sander mill pad is cut tail apparatus, belongs to the sander technical field.

Background technology

The mill pad is applied in wide-belt sander combination sand frame or the pure mill pad fine grinding sand frame usually, its upper surface is coated with wool felt and graphite tape, effect is that the plate workpiece after cutting through the fixed thick sand of sand roller is carried out the throwing of further plane cuts sanding, to improve the surface smoothness of processing back workpiece.The mill pad is installed on the mill poppet by a channled rail mechanism, and the mill poppet is connected with frame by a height adjustment mechanism.

Cut in the sanding process in the throwing of mill pad, " gnaw head and cut tail " phenomenon occurs through regular meeting, promptly there is chamfering on the upper and lower surface at two ends on the workpiece direction of feed.Its reason is, the wool felt that coats because of mill pad upper surface is an elastomeric cushion material, and when workpiece enters or break away from moment of mill pad, the upper and lower surperficial bight of the workpiece sand amount of cutting too much causes.In addition, as workpiece self warpage or rigidity deficiency, throw the moment of cutting in beginning or end mill pad, cutting is failed to participate in simultaneously or finish in the upper and lower surface of sheet material, and the single face sand amount of cutting is too much, also can cause occurring this kind phenomenon.

In the existing sander, head it off only depends on operating personnel's manual setting feeding guide plate or mill pad relative altitude, and is time-consuming bothersome, and poor effect.

Summary of the invention

The purpose of this utility model is to overcome the deficiency that prior art exists, and provides a kind of anti-head of gnawing of wide-belt sander mill pad to cut tail apparatus.

The purpose of this utility model is achieved through the following technical solutions:

The anti-head of gnawing of wide-belt sander mill pad is cut tail apparatus, comprise driving mechanism and electric control system, it is characterized in that: the centre position below the mill poppet is equipped with a dual piston cylinder, between mill poppet two ends and height adjustment mechanism, be respectively equipped with linkage, described linkage is formed by three rod hinge connections, wherein going up connecting rod is hinged with the mill poppet, lower link and height adjustment mechanism are hinged, the piston rod of intermediate connecting rod and cylinder is hinged, the magnetic valve of control cylinder action links to each other with electric control system, and piston rod horizontal movement drive link mechanism makes the mill poppet move up and down along the bearing upper rail.

Further, the anti-head of gnawing of above-mentioned wide-belt sander mill pad is cut tail apparatus, described electric control system comprises photoelectric sensor, rotary encoder and Programmable Logic Controller (PLC), photoelectric sensor is located at sander and advances the plate end, rotary encoder is installed on the feeder, photoelectric sensor, rotary encoder are connected with the Programmable Logic Controller input, and the magnetic valve of control cylinder action links to each other with the Programmable Logic Controller output.

Further, the anti-head of gnawing of above-mentioned wide-belt sander mill pad is cut tail apparatus, described height adjustment mechanism is made up of worm type of reduction gearing and screw mandrel screw pair, and worm type of reduction gearing is installed on the frame, and the projecting shaft of screw mandrel screw pair and the lower link of linkage are hinged.

The substantive distinguishing features of technical solutions of the utility model and progressive being mainly reflected in:

The utility model design is unique, novel structure, has effectively eliminated sand and has cut " gnaw head and cut tail " phenomenon in the technology, avoids the upper surface at two ends on the workpiece direction of feed or lower surface chamfering to occur.Easy to use, economic benefit is obvious.

Description of drawings

Below in conjunction with accompanying drawing technical solutions of the utility model are described further:

Fig. 1: the left view of sand frame;

Fig. 2: structural representation of the present utility model.

The implication of each Reference numeral sees the following form among the figure:

Reference numeral	Implication	Reference numeral	Implication	Reference numeral	Implication
Reference numeral	Implication	Reference numeral	Implication	Reference numeral	Implication		10	The sand roller	20	Idler roller	30	Idler roller
1	Bearing	2	The mill poppet	3	The mill pad		10	The sand roller	20	Idler roller	30	Idler roller
1	Bearing	2	The mill poppet	3	The mill pad	4	Height adjustment mechanism	5	Cylinder	6	Linkage
61	Last connecting rod	62	Intermediate connecting rod	63	Lower link	4	Height adjustment mechanism	5	Cylinder	6	Linkage
61	Last connecting rod	62	Intermediate connecting rod	63	Lower link	7	Frame

The specific embodiment

As shown in Figure 1, the sand frame of wide-belt sander comprises sand roller 10, idler roller 20 and idler roller 30, is with the abrasive band between sand roller 10 and idler roller 20, and is by moving of idler roller 20, securable or loosen the abrasive band; Rear side at sand roller 10 has idler roller 30, and mill pad 3 places between sand roller 10 and the idler roller 30.Feed mechanism is sent workpiece to, and motor drives the abrasive band rotation, with the sand turning work piece through actuator drives sand roller or idler roller.

The anti-head of gnawing of wide-belt sander mill pad is cut tail apparatus, as shown in Figure 2, comprise driving mechanism and electric control system, mill pad 3 is installed on the mill poppet 2 by a channled rail mechanism, mill poppet 2 places on the bearing 1, the inboard of bearing 1 has guide groove, the two ends of mill poppet 2 can move up and down along guide groove, centre position below the mill poppet is equipped with a dual piston cylinder 5, between mill poppet 2 two ends and height adjustment mechanism 4, be respectively equipped with linkage 6, linkage 6 is formed by three rod hinge connections, comprise connecting rod 61, intermediate connecting rod 62 and lower link 63, wherein go up connecting rod 61 and be hinged with mill poppet 2, lower link 63 is hinged with height adjustment mechanism 4, and intermediate connecting rod 62 is hinged with the piston rod of cylinder 5; The piston rod horizontal movement drive link mechanism 6 of cylinder 5 makes mill poppet 2 move up and down along the guide groove on the bearing 1.Wherein, height adjustment mechanism 4 is made up of worm type of reduction gearing and screw mandrel screw pair, worm type of reduction gearing is installed on the frame 7, the projecting shaft of screw mandrel screw pair and the lower link of linkage 63 are hinged, the rotation decelerator worm can drive the screw mandrel screw pair and move up and down, and is used for the adjustment to mill poppet elemental height position.

Electric control system comprises photoelectric sensor, rotary encoder and Programmable Logic Controller (PLC), photoelectric sensor is located at sander and advances the plate end, rotary encoder is installed on the feeder, photoelectric sensor, rotary encoder are connected with the Programmable Logic Controller input, and the magnetic valve of control cylinder 5 actions is connected with the Programmable Logic Controller output.

When photoelectric sensor detected the workpiece head end and enters sander and advance the plate end, signal was delivered to PLC, and meanwhile, PLC is to the input pulse signal-count from rotary encoder, and carried out internal arithmetic by the program that writes wherein; When the workpiece head end proceeded to desired location, the PLC output instruction signal was to magnetic valve, and magnetic valve moves, and the piston rod of cylinder 5 stretches out, and drive link mechanism 6 makes mill poppet 2 move upward along the guide groove on the bearing 1, and mill pad 3 arrives operating positions.

When photoelectric sensor detected workpiece end and leaves sander and advance the plate end, signal was delivered to PLC, and meanwhile, PLC is to the input pulse signal-count from rotary encoder, and carried out internal arithmetic by the program that writes wherein; When workpiece end proceeded to desired location, the PLC output instruction signal was to magnetic valve, and magnetic valve moves, the piston rod withdrawal of cylinder 5, and drive link mechanism 6 makes mill poppet 2 move downward along the guide groove on the bearing 1, mill pad 3 disengaging operating positions.

As fully visible, the utility model design is unique, novel structure, has effectively eliminated sand and has cut " gnaw head and cut tail " phenomenon in the technology, avoids that chamfering appears in the upper and lower surface at two ends on the sheet material direction of feed.Be applied in the wide-belt sander, very practical, effect is obvious.

What need understand is: though the foregoing description is to the utility model detailed explanation of contrasting; but these explanations are just illustrative to the utility model; rather than to restriction of the present utility model; any innovation and creation that do not exceed in the utility model connotation all fall in the protection domain of the present utility model.

Claims

1. the anti-head of gnawing of wide-belt sander mill pad is cut tail apparatus, comprise driving mechanism and electric control system, it is characterized in that: the centre position below the mill poppet is equipped with a dual piston cylinder, between mill poppet two ends and height adjustment mechanism, be respectively equipped with linkage, described linkage is formed by three rod hinge connections, wherein going up connecting rod is hinged with the mill poppet, lower link and height adjustment mechanism are hinged, the piston rod of intermediate connecting rod and cylinder is hinged, the magnetic valve of control cylinder action is connected with electric control system, and piston rod horizontal movement drive link mechanism makes the mill poppet move up and down along the bearing upper rail.

2. the anti-head of gnawing of wide-belt sander mill pad according to claim 1 is cut tail apparatus, it is characterized in that: described electric control system comprises photoelectric sensor, rotary encoder and Programmable Logic Controller, photoelectric sensor is located at sander and advances the plate end, rotary encoder is installed on the feeder, photoelectric sensor, rotary encoder are connected with the Programmable Logic Controller input, and the magnetic valve of control cylinder action is connected with the Programmable Logic Controller output.

3. the anti-head of gnawing of wide-belt sander mill pad according to claim 1 is cut tail apparatus, it is characterized in that: described height adjustment mechanism is made up of worm type of reduction gearing and screw mandrel screw pair, worm type of reduction gearing is installed on the frame, and the projecting shaft of screw mandrel screw pair and the lower link of linkage are hinged.