CN201124140Y

CN201124140Y - Driving mechanism of glue gun

Info

Publication number: CN201124140Y
Application number: CN 200720045082
Authority: CN
Inventors: 哈利·索默
Original assignee: Positec Power Tools Suzhou Co Ltd
Current assignee: Positec Power Tools Suzhou Co Ltd
Priority date: 2007-11-07
Filing date: 2007-11-07
Publication date: 2008-10-01
Anticipated expiration: 2017-11-07

Abstract

The utility model relates to a driving mechanism for a glue gun, comprising a crank handle do pendular movement, wherein the crank handle can drive a first connecting rod and a second connecting rod arranged on the crank handle to do the reciprocal movement, and the fist connecting rod and the second connecting rod respectively drive a first driving rod and a second driving rod to do pendular movement; the first driving rod and the second driving rod which are in slide fit and connection with a piston rod can alternatively drive the piston rod to do axial movement. Compared with prior art, the driving mechanism has the advantages of simple structure, superior performance and easy popularization.

Description

The driving mechanism of glue rifle

Technical field

The utility model relates to a kind of driving mechanism of glue rifle.

Background technology

In the current life, the glue rifle is a kind of very common finishing instrument, mainly floor or glass is sealed.Manual, electronic, the pneumatic three kinds of type of drive that the glue rifle of selling at present mainly contain on market realize beating glue.For example the most frequently used manual drives mechanism utilizes two detent mechanisms, though the operator need make very big power to the glue rifle when structure is simply played glue, could extrude glue from packing element.What sale was more on the another kind of market is pneumatic glue rifle, because adopting air pressure is driving force, thus when air pressure is not enough, can bring very big inconvenience to the operator, and in driving mechanism, also need to introduce a series of components and parts such as valve, cause assembling comparatively complicated, and security performance remain to be investigated.So the development trend of glue rifle is to adopt electric driving mechanism to realize beating glue at present.Using maximum structures at present is the transmission of motor driven gear tooth bar, for example introduce in the U.S. US5775533 patent, but it is cumbersome that whole piston rod is manufactured tooth bar, and owing between each tooth of tooth bar certain distance is arranged, the glue rifle after stopping, motor also can be released the distance of remaining tooth, make glue also a spot of overflowing can be arranged from packing element, cause unnecessary waste.

Given this, just be necessary the driving mechanism of glue rifle is done further research.

The utility model content

The purpose of this utility model is to provide a kind of driving mechanism of novel glue rifle simple in structure.

The technical scheme that the prior art problem that solves the utility model is adopted is:

A kind of driving mechanism of glue rifle, comprise the piston rod that can move along its axis X direction, also comprise a crank of doing pendular movement, described crank can drive first, second connecting rod disposed thereon and move back and forth along being roughly parallel to the axis X direction, described first, second connecting rod drives first, second drive rod respectively and does pendular movement, and described first, second drive rod slides and is coupled to described piston rod and this piston rod axially-movable of driven.

One end of described first, second connecting rod pivot respectively is arranged on the crank, and other end pivot respectively is arranged on first, second drive rod.The centre of motion of described crank is on the line between the pivoting point of first, second connecting rod and crank.

Described crank head lamp brush guard pivot is provided with an end of third connecting rod, and this driving mechanism also comprises a rotating disk around the rotation of self center, the other end pivot of described third connecting rod be arranged on rotating disk the surface, depart from rotating disk pivot place.

Described crank be shaped as triangle, an end of first, second, third connecting rod pivot respectively is arranged on three angles of crank.

The distance of the pivoting point of described third connecting rod and crank between the crank-motion center arrives distance between the crank-motion center greater than the pivoting point of first connecting rod or second connecting rod and crank.

Be provided with spring between the side wall of outer shell of described first, second drive rod and glue rifle, original state is in self-locking between first, second drive rod and the piston rod under the effect of spring.

Compared with prior art, the beneficial effects of the utility model are: provide a kind of driving mechanism of novel glue rifle, and each design of part is simple, easily processing, simple to operate, the function admirable of entire mechanism.

Description of drawings

Fig. 1 is the schematic diagram that the utility model is in original state.

Fig. 2 is the schematic diagram that the utility model is in first driving condition.

Fig. 3 is the mediate schematic diagram of state of the utility model.

Fig. 4 is the schematic diagram that the utility model is in second driving condition.

Wherein,

1 rotating disk, 10 rotating disk pivots, 2 third connecting rods

21 1 ends, 22 other ends, 3 cranks

30 crank-motion center 4a first connecting rod 4b second connecting rods

41a, 41b one

end

42a, 42b other end 5a first drive rod

The 5b second drive rod 6a,

6b spring

7a, 7b side wall of outer shell

8 piston rods, 9 piston plate X piston rod axis

The specific embodiment

As shown in Figure 1, the utility model has disclosed a kind of novel glue rifle driving mechanism.Being provided with one in the enclosure of glue rifle can be around the rotating disk 1 of himself center 10 rotation, and this rotating disk 1 can be by the motor-driven of glue rifle, also can its rotation of manual drives.On the surface of rotating disk 1, depart from rotating disk pivot 10 place's pivots and be provided with a third connecting rod 2.All pivot structures all are to connect by pin-and-hole in the utility model, so hereinafter describe no longer in addition.

Above rotating disk 1, be provided with one among the figure and be shaped as leg-of-mutton crank 3.This crank 3 can rotate around its center 30, and pivot is provided with three connecting rods respectively on three angles on its surface.One end, 21 pivots of described third connecting rod 2 are arranged on one of them angle, and the other end 22 pivots are arranged on the surface of rotating disk 1, above mention.At in addition two angle head lamp brush guard pivots of crank 3 an end 41a, the 41b of first, second connecting rod 4a, 4b are being set, its

other end

42a, 42b pivot respectively are arranged on first, second drive rod 5a, the 5b.The centre of motion 30 of described crank 3 is on the line of the pivoting point between first, second connecting rod 4a, 4b and the crank 3.The distance of the pivoting point of described third connecting rod 2 and crank 3 between the crank-motion center 30 arrives distance between the crank-motion center 30 greater than the pivoting point of first connecting rod 4a or second connecting rod 4b and crank 3.

The piston rod 8 of described first, second drive rod 5a, 5b and glue rifle slides and connects, and its structure is a prior art, promptly on first, second drive rod 5a, the 5b through hole than piston rod 8 slightly larger in diameter is arranged, and piston rod 8 passes this through hole.The same with prior art, piston rod 8 has an axis X, and its front end is fixed with a piston plate 9, is used for pushing the end realization plastic squeeze of glue rod.Described piston rod 8 also need pass the hole on side wall of outer shell 7a, the 7b except passing the through hole on first, second drive rod 5a, the 5b in assembling.In the present embodiment, described side wall of

outer shell

7a, 7b are the gusset of glue rifle enclosure.Respectively be provided with spring 6a, a 6b between side wall of outer shell 7a, the 7b of described first, second drive rod 5a, 5b and glue rifle, original state is tightening between first, second drive rod 5a, 5b and the piston rod 8 under the effect of spring 6a, 6b, be that first, second drive rod 5a, 5b produce small size inclination, again because piston rod 8 passes the through hole of first, second drive rod 5a, 5b, thus first, second drive rod 5a, 5b and piston rod 8 just reach can self-locking angle.

Introduce the motion mode of present embodiment below.

As shown in Figure 1, when rotating disk 1 turns clockwise, under the drive of third connecting rod 2, crank 3 can be rotated counterclockwise around its center 30, and described crank just can make an end 41a, the 41b of first, second connecting rod 4a, 4b also be rotated counterclockwise around crank-motion center 30.In conjunction with shown in Figure 2, the other end 42a of first connecting rod 4a has corresponding axial displacement forward along axis X, because self-locking between the first drive rod 5a and the piston rod 8, advance along the axis X direction together so the other end 42a of first connecting rod 4a can drive the active force that the first drive rod 5a and piston rod 8 overcome spring 6a, realize plastic squeeze.And this moment, the other end 42b of second connecting rod 4b has corresponding axial displacement backward along axis X, thus making the second drive rod 5b produce swing clockwise removes self-locking between the second drive rod 5b and the piston rod 8, makes plastic squeeze more light, smooth.

As shown in Figure 3, when rotating disk 1 continued to turn clockwise, according to the theory of mechanics of crank connecting link, crank 3 can oppositely turn clockwise around its center 30.An end 41a, the 41b of first, second connecting rod 4a, 4b also turn clockwise around crank-motion center 30.Like this, the other end 42a of first connecting rod 4a can produce backward axial displacement along axis X, and the other end 42b of second connecting rod 4b can produce forward axial displacement along axis X, makes driving mechanism reach intermediateness among Fig. 3.

When rotating disk 1 continues to turn clockwise, crank 3 also continues to turn clockwise, as shown in Figure 4, the other end 42b of second connecting rod 4b has corresponding axial displacement forward along axis X, because self-locking between the second drive rod 5b and the piston rod 8, advance along the axis X direction together so the other end 42b of second connecting rod 4b can drive the active force that the second drive rod 5b and piston rod 8 overcome spring 6b, realize plastic squeeze.And this moment, the other end 42a of first connecting rod 4a has corresponding axial displacement backward along axis X, thus making the first drive rod 5a produce swing clockwise removes self-locking between the first drive rod 5a and the piston rod 8, makes plastic squeeze more light, smooth.

Like this, when rotating disk 1 turns clockwise always, crank 3 will ceaselessly be done pendular movement, and first, second drive rod 5a, 5b also can ceaselessly realize do pendular movement and piston rod 8 between self-locking and release, thereby come these piston 8 bars of driven to do axially-movable, realize continual plastic squeeze.When needs stopped plastic squeeze, the rotation that only need stop rotating disk 1 got final product.

The utility model still has multiple concrete embodiment, and for example the shape of crank 3 also can be polygonal or irregularly shaped.All employings are equal to replacement or equivalent transformation and all technical schemes of forming, all drop within the claimed scope of the utility model.

Claims

1. the driving mechanism of a glue rifle, comprise the piston rod (8) that can move along its axis direction, it is characterized in that: also comprise a crank (3) of doing pendular movement, described crank (3) can drive first, second connecting rod (4a disposed thereon, 4b) move back and forth along being roughly parallel to axis direction, described first, second connecting rod (4a, 4b) drive first, second drive rod (5a respectively, 5b) do pendular movement, (5a, 5b) slip is coupled to described piston rod (8) and this piston rod of driven (8) axially-movable to described first, second drive rod.

2. the driving mechanism of glue rifle according to claim 1 is characterized in that: described first, second connecting rod (4a, end (41a 4b), 41b) pivot is arranged on the crank (3) respectively, the other end (42a, 42b) respectively pivot be arranged on first, second drive rod (5a, 5b) on.

3. the driving mechanism of glue rifle according to claim 2 is characterized in that: the centre of motion (30) of described crank (3) is positioned at first, second connecting rod, and (4a is 4b) and on the line between the pivoting point of crank (3).

4. the driving mechanism of glue rifle according to claim 3, it is characterized in that: described crank (3) head lamp brush guard pivot is provided with an end (21) of third connecting rod (2), this driving mechanism also comprises a rotating disk (1) around the rotation of self center (10), the other end (22) pivot of described third connecting rod (2) be arranged on rotating disk (1) the surface, depart from rotating disk pivot (10) and locate.

5. the driving mechanism of glue rifle according to claim 4 is characterized in that: the distance of the pivoting point of described third connecting rod (2) and crank (3) between the crank-motion center (30) arrives distance between the crank-motion center (30) greater than the pivoting point of first connecting rod (4a) or second connecting rod (4b) and crank (3).

6. the driving mechanism of glue rifle according to claim 5 is characterized in that: described crank (3) be shaped as triangle, an end (41a, 41b, 21) of first, second, third connecting rod (4a, 4b, 2) pivot respectively is arranged on three angles of crank (3).

7. the driving mechanism of glue rifle according to claim 1, it is characterized in that: described first, second drive rod (5a, 5b) with the side wall of outer shell (7a of glue rifle, be provided with spring (6a 7b), 6b), original state spring (6a, first, second drive rod under effect 6b) (5a, 5b) and self-locking between the piston rod (8).