CN202922691U

CN202922691U - Stack-up type guide plate

Info

Publication number: CN202922691U
Application number: CN201220473461.7U
Authority: CN
Inventors: 林石; 赵志火; 胡建平
Original assignee: JINHUA TRILINK HUIHUANG CO Ltd
Current assignee: JINHUA TRILINK HUIHUANG CO Ltd
Priority date: 2012-09-18
Filing date: 2012-09-18
Publication date: 2013-05-08
Anticipated expiration: 2022-09-18

Abstract

The utility model relates to a stack-up type guide plate of a chain saw. To solve the technical problems, the utility model provides the stack-up type guide plate which is high in strength, flat and straight wholly, free of indentation and ablation on the surface and high in production efficiency. The stack-up type guide plate is composed of two side plates and a core plate, wherein the core plate is connected between the two side plates, the two side plates are formed by high-quality carbon alloy steel plates in a blanking mode, and then the whole thermal treatment is conducted to a high hardness more than 40HRC, the outer sides of the side plates are stamped, two lines of circular convex points are formed in the inner sides of the side plates, finally, the two side plates and the core plate are overlapped and placed between two electrode plates of a projection welder to be pressurized and energized, when welding is conducted, currents are concentrated on the two lines of the circular convex points, two lines of double-layer molten cores are rapidly formed on the convex points of an interface of the two side plates and the core plate, the two lines of the molten cores are pressed tightly and flattened, the two side plates and the core plate are welded to be a whole once, and two lines of thin circular lines which are formed by projection welding are formed at each of two side faces of the guide plate. The stack-up type guide plate can be used in various chain saws such as gasline chain saws and electric chain saws.

Description

A kind of stacked guide plate

Technical field

The utility model relates to chain saw, relates in particular to a kind of stacked guide plate of chain saw.

Background technology

Chain saw mainly is comprised of prime mover, guide plate, saw chain and sprocket wheel, and guide plate is anchored on the housing of prime mover, and saw chain rotation is moving around guide plate and the transhipment of chain crop rotation rotation.Traditional guide plate is all-in-one-piece, and manufacturing process is complicated, first by thicker steelplate punching blanking, the nose installed surface is milled in milling two sides, and then milling periphery, mill the guide plate groove, carry out again bulk heat treatmet, leveling, then high-frequency quenching guide pass, last and nose assembling is riveted together, so the monoblock type guide plate manufacturing cycle is long, cost is high, and production efficiency is low.Existing stacked guide plate is formed by the rear spot welding that is superimposed of two side plates and central layer, and side plate and central layer be by the sheet metal stamping and blanking, and logical large electric current after being compressed by the pressure head of mash welder after superimposed makes near the METAL HEATING PROCESS pressure head and fuses together.The weld spacing of spot welding is close to can not be too, and number of welds is few, and the internal flaw of weld nugget is more, so the stacked guide plate intensity of spot welding is low, in use easily splits and fractures.Load mould and electric spark ablation vestige that the surface of spot welding guide plate has pressure head to extrude, outward appearance is relatively poor.In addition, must pointwise weld during spot welding, so the production efficiency of spot welding is lower, and guide plate easily is out of shape.

Summary of the invention

Technical problem to be solved in the utility model just is to provide that a kind of intensity is high, whole straight, surface is without load mould, stacked guide plate that production efficiency is high, and it is to be welded together by two side plates and central layer rear projection welding technique with the advanced person that is superimposed.

for solving the problems of the technologies described above, the utility model adopts following technical scheme: described stacked guide plate is comprised of two blocks of side plates and the central layer that is connected in the middle of biside plate, biside plate is by high-quality medium carbon alloy steel plate Blanking Shaping, then carry out bulk heat treatmet to the high rigidity of 40-48HRC, stamp out again two row pits in the outside of biside plate, make the inboard circular salient point of two row that forms, the disposable integral body that is welded into of pressurization energising at last between two battery lead plates that are put into projection welder is superimposed together biside plate and central layer, the thin round wire that described stacked guide plate two sides have two row projection weldings to form, without pit and ablation, whole straight, specious.

As preferably, the diameter of the thin round wire that two row projection weldings form is 2.5-3.5mm.

As preferably, the height of the salient point that stamps out on described biside plate is 0.4-0.7mm.

As preferably, the root diameter (RD) of the salient point that stamps out on described biside plate is 2.4-3.0mm.

As preferably, the thickness of described side plate is 1.0-1.5mm.

As preferably, the thickness of described central layer is 1.1-1.7mm.

As preferably, described guide plate front end is equipped with jockey sprocket, and the transhipment of guiding saw chain De rotation is moving.

As preferably, described jockey sprocket is bearing on needle bearing, can reduce the rotary resistance of jockey sprocket.

As preferably, described guide plate front end has guide pass, does not fill directive wheel, and is moving by the transhipment of guide pass guiding saw chain De rotation, makes structure simpler.

The utility model is owing to having adopted technique scheme, and during welding, electric current concentrates on two row salient points, and is very fast in biside plate and central layer interface formation nugget and compacted pressing, the inner zero defect of solder joint, weld spacing is counted many from little, and the weld strength of stacked guide plate is obviously improved, be difficult in use splitting and fractureing, and the grazing of guide plate is good, and swage set is straight, and cutting-rate is high, and guide plate two sides are without pit and ablation, and outward appearance is also more attractive in appearance.

For guaranteeing carrying out smoothly of chain saw sawmilling process, swage set must be straight unobstructed, and guide plate must have high glacing flatness, high rigidity and high elasticity for this reason, so the biside plate of stacked guide plate needs bulk heat treatmet to the high rigidity of 40-48HRC.This just requires the phosphorus content of biside plate steel higher, but is easy to out crackle during the welding of the higher steel of phosphorus content, so the steel product ingredient of biside plate, steel product ingredient and the welding procedure of central layer are had special requirement.Simultaneously, for preventing distortion that heat treatment causes and the adverse effect of butt welded seam, the bulk heat treatmet of biside plate must be carried out before welding.In heat treatment and have on the biside plate of high rigidity of 40-48HRC and stamp out salient point, more much bigger than general projection welding difficulty, require side plate that high rigidity and high resiliency should be arranged, also certain plasticity will be arranged, so steel product ingredient, the whole heat treatment process standard of side plate had very high requirement.Simultaneously, diel, drift material and geomery there is very high requirement.The utility model just succeeds after having solved above-mentioned various technical barrier.

The utility model can be used for the multiple chain saws such as chain saw, electric chain saw.

Description of drawings

Below in conjunction with the drawings and specific embodiments, the utility model is further described:

Fig. 1 represents to have the front view of the stacked guide plate of jockey sprocket;

Fig. 2 represents to have the top view of the stacked guide plate of jockey sprocket;

Fig. 3 represents to have the B-B cutaway view of the stacked guide plate of jockey sprocket;

Fig. 4 represents to have the A-A cutaway view of the stacked guide plate of jockey sprocket;

Fig. 5 represents to have the front view of side plate of the stacked guide plate of jockey sprocket;

Fig. 6 represents to have the top view of side plate of the stacked guide plate of jockey sprocket;

Near the salient point 13 of Fig. 7 presentation graphs 6 partial enlarged drawing;

Fig. 8 represents to have the C-C cutaway view of the stacked guide plate of jockey sprocket;

Near the double-deck nugget 17 of Fig. 9 presentation graphs 8 partial enlarged drawing;

Figure 10 represents to have the D-D cutaway view of side plate of the stacked guide plate of jockey sprocket;

Figure 11 represents near the partial enlarged drawing of salient point 13 of Figure 10;

Figure 12 represents the front view without the stacked guide plate of jockey sprocket;

Figure 13 represents the top view without the stacked guide plate of jockey sprocket;

Figure 14 represents the F-F cutaway view without the stacked guide plate of jockey sprocket;

Figure 15 represents the E-E cutaway view without the stacked guide plate of jockey sprocket;

Figure 16 represents the front view without the side plate of the stacked guide plate of jockey sprocket;

Figure 17 represents the top view without the side plate of the stacked guide plate of jockey sprocket;

Figure 18 represents the G-G cutaway view without the stacked guide plate of jockey sprocket;

Figure 19 represents the H-H cutaway view without the side plate of the stacked guide plate of jockey sprocket.

The specific embodiment

as extremely shown in Figure 11 in Fig. 1, preferred embodiment for a kind of stacked guide plate of the utility model, it is the stacked guide plate that jockey sprocket is arranged, comprise two blocks of side plates 1, be connected to central layer 2 and the jockey sprocket 5 of the centre of biside plate 1, biside plate 1 is by high-quality medium carbon alloy steel plate Blanking Shaping, then carry out bulk heat treatmet to the high rigidity of 40-48HRC, stamp out again two row pits 16 in the outside of biside plate 1, make the inboard two row salient points 13 that form, pressurization energising at last between two battery lead plates that are put into projection welder is superimposed together biside plate 1 and central layer 2, during welding, electric current concentrates on two row salient points 13, very fast in biside plate 1 and the central layer double-deck nugget 17 of 2 salient point places, interface formation, two row and compacted pressings, the disposable integral body that is welded into, the metal that pit 16 is pushed back after pressure welding is filled and led up, form the two thin round wire 3 of row.The guide pass 18 use high-frequency quenchings on guide plate two long limits harden.

The diameter of the thin round wire 3 that described two row projection weldings form is 2.5-3.5mm.

The height 15 of the salient point 13 that stamps out on described biside plate 1 is 0.4-0.7mm.

The root diameter (RD) 14 of the salient point 13 that stamps out on described biside plate 1 is 2.4-3.0mm.

The thickness 19 of described side plate 1 is 1.0-1.5mm.

The thickness 20 of described central layer 2 is 1.1-1.7mm.

The front end of described stacked guide plate is equipped with jockey sprocket 5.

Described jockey sprocket 5 is bearing on needle bearing 10, and the inner ring 11 of needle bearing 10 is fastened between biside plate 1 by rivet 6.

As extremely shown in Figure 19 in Figure 12, another embodiment for a kind of stacked guide plate of the utility model, it is the stacked guide plate without jockey sprocket, be formed by connecting by two blocks of side plates 1 and middle central layer 2 projection weldings, the front end of described guide plate also has the guide pass 18 through high frequency quenching, do not fill jockey sprocket, moving by guide pass 18 guiding saw chain De rotation transhipments, other structure is identical with the stacked guide plate that jockey sprocket is arranged.

Claims

1. stacked guide plate, it is characterized in that: described stacked guide plate is comprised of two blocks of side plates (1) and the central layer (2) that is connected in the middle of biside plate, the thin round wire (3) that the guide plate two sides have two row projection weldings to form, without pit and ablation, whole straight.

2. a kind of stacked guide plate according to claim 1 is characterized in that: the diameter of the thin round wire (3) that two row projection weldings form is 2.5-3.5mm.

3. a kind of stacked guide plate according to claim 1, it is characterized in that: the front end of described guide plate is equipped with jockey sprocket (5).

4. a kind of stacked guide plate according to claim 1, it is characterized in that: the front end of described guide plate has guide pass (18), does not fill jockey sprocket.

5. a kind of stacked guide plate according to claim 1, it is characterized in that: the height (15) of the salient point (13) that stamps out on described biside plate (1) is 0.4-0.7mm.

6. a kind of stacked guide plate according to claim 1, it is characterized in that: the root diameter (RD) (14) of the salient point (13) that stamps out on described biside plate (1) is 2.4-3.0mm.

7. a kind of stacked guide plate according to claim 1, it is characterized in that: the thickness (19) of described side plate (1) is 1.0-1.5mm.

8. a kind of stacked guide plate according to claim 1, it is characterized in that: the thickness (20) of described central layer (2) is 1.1-1.7mm.