CN100557111C - Apparatus for sewing - Google Patents

Abstract

Apparatus for sewing of the present invention comprises: the 1st fuel tank that is positioned at the top of the object to be sewn that is supplied to lubricating oil; Be positioned at the 2nd fuel tank of the below of described the 1st fuel tank; With the described the 1st and the 2nd interconnective grease channel of fuel tank; Be arranged on the inside of described the 2nd fuel tank, according to the oil mass of the 2nd fuel tank and the float of position change; The lubricating oil of described the 2nd fuel tank is exported to outside wick; Limit described float and the approaching limiting member of described wick; And the inaccessible mechanism that closes according to the changing position of described float, with at least a portion of described grease channel, by structure like this, utilize described limiting member to make wick not hinder the action of float, by making described float action reliably, can be correctly to the 2nd fuel tank supplying lubricating oil.

Description

Apparatus for sewing

Technical field

The present invention relates to have apparatus for sewing to the fueller of motion portion supplying lubricating oil.

Background technology

In the apparatus for sewing in the past, such as the structure that has a kind of Japanese patent laid-open 9-168688 communique to be disclosed.The structure of this apparatus for sewing as shown in figure 10, have fuel tank 50 and the pipe 51 that is connected with this fuel tank 50, lubricating oil by above-mentioned fuel tank 50 is supplied with such as, the bearing portion of going up axle 52 via the rotational slide portion of above-mentioned pipe 51 upward axis 52, and the high speed that can prevent axle 52 is rotated and caused the sintering of bearing portion.The lubricating oil that is supplied to axle 52 bearing portion is also further supplied with shuttle driving mechanisms 54, shank driving mechanism, thread take-up tension lever motion portion such as driving mechanism up and down up and down by many pipes 53, is finally discharged to food tray 55 by the lubricating oil that gear etc. is made dirty.On the other hand, supply with the not conference of lubricating oil of described shuttle driving mechanism 54 and made dirty,, return fuel tank 50 and carry out the recirculation use so supply with pipe 56 via plunger displacement pump 58 and pump that lower shaft 59 drives by oil pipe 57.

Yet, the problem that the apparatus for sewing of said structure is enumerated below existing.Promptly, as shown in figure 10, the bearing portion of last axle 52 is in the top higher than shuttle driving mechanism 54, when apparatus for sewing stops, when promptly, plunger displacement pump 58 stops, the lubricating oil that is trapped in the pipe 53 flows downwards because of gravity, and lubricating oil is to 54 oversupplies of shuttle driving mechanism thus, and lubricating oil might attach on object to be sewn when used next time.

To this, considered the apparatus for sewing of following structure.This apparatus for sewing such as adopted with fuel tank be divided into 2 up and down (the 1st fuel tank is the top) of the 1st fuel tank and the 2nd fuel tank, by the lubricating oil feed path structure that both are connected with it.And, the float that moves up and down according to the lubricants capacity of supplying with to the 2nd fuel tank is set in the 2nd fuel tank, open or the inaccessible fastened component with the lubricating oil inflow entrance of the 2nd fuel tank is set, correctly the lubricants capacity that flows into the 2nd fuel tank is controlled (preventing glut) on this float.Again, the 2nd fuel tank is connected with the shuttle driving mechanism, the lubricating oil that is stored in the 2nd fuel tank is supplied with to the shuttle driving mechanism by the lubricating oil feed path.This occasion, wick inserted lead in the lubricating oil feed path, make this end be positioned at the bottom of the 2nd fuel tank,, also can reliably the lubricating oil from the 2nd fuel tank be supplied with to the shuttle driving mechanism even adopted the so not big structure of difference of height between the 2nd fuel tank and the shuttle driving mechanism.

Yet the occasion of said structure because of wick is positioned at the bottom of the 2nd fuel tank, so float contacts with wick, hinders the action of float, thus, takes place sometimes and can not correctly control the lubricating oil that flows into the 2nd fuel tank.

The objective of the invention is to, provide action that a kind of wick can not hinder float, can be by making described float action reliably with the apparatus for sewing of the structure of the lubricating oil supply tank of appropriate amount.

Content of the present invention

Apparatus for sewing of the present invention comprises: the fuel tank that stores lubricating oil; Be arranged in this fuel tank, in linkage the lubricants capacity that flows in this fuel tank regulated the float of usefulness according to the lubricants capacity in this fuel tank; And a part of wick that is equipped in the described fuel tank, it is characterized in that, in described fuel tank, form described float of restriction and the approaching limiting member of described wick.

Adopt this structure, float is not closely connect with wick, so can prevent to hinder the float action that moves up and down with lubricants capacity because of wick because of utilizing limiting member.

The occasion of said structure, described limiting member can be the jut that is formed on the inboard face of described fuel tank, also can be the tab-like described inboard facial and rib between described float and described wick that is formed in, perhaps also can be the rib that is positioned at the space of described fuel tank and gives prominence to formation to bottom surface sections.

Adopt this structure, available simple structure prevents closely connecing of described float and wick, especially in the occasion from the rib of the outstanding structure of bottom surface sections, even the lubricating oil in the fuel tank reduces, also can absorb lubricating oil by wick, and the action of float also can correctly be carried out.

The occasion of said structure, the height that described rib is shaped should be greater than the maximum amount of movement of the float that increases and decreases with described lubricating oil.

Adopt this structure, can prevent reliably that wick from entering between the bottom surface sections of float and fuel tank and hinder the action of described float.

The occasion of said structure, described rib also can be formed on the position between described float and the described wick.In described fuel tank, with described rib is that the boundary is provided with and is positioned at the supply unit that supplying lubricating oil that described float sets side is used, form breach or gap on described rib, this breach or gap can make the described wick in the described fuel tank set side and set between the side with described float and be communicated with.

Adopt this structure, wick in the fuel tank sets side and float sets the both sides of side because of lubricating oil can arrive, thus even lubricating oil is a small amount of, also can absorb lubricating oil by wick,

The occasion of said structure, inaccessible mechanism in described supply unit setting and the interlock of described float, when the lubricants capacity in the described fuel tank reaches ormal weight when above, described inaccessible mechanism closes at least a portion of described supply unit, when lubricants capacity does not reach ormal weight, that at least a portion of described supply unit is open.

Adopt this structure, the lubricating oil in the fuel tank can be held in appropriate amount.

The occasion of said structure, described fuel tank can be from other fuel tank supplying lubricating oil by described supply unit.This occasion, the lubricating oil storage capacity of described other fuel tank can be more than described fuel tank.

Adopt this structure, compare, can improve the free degree that described fuel tank sets in apparatus for sewing with the occasion that 1 big fuel tank only is set.Again, if other fuel tank is made large-scale, then fuel tank can be made small-sized, so can effectively utilize the apparatus for sewing volume inside.

The occasion of said structure, described fuel tank have 2 peristomes at least, and the wick of rope shape extends outside described fuel tank from these peristomes, and the pars intermedia of described wick can be positioned at described fuel tank.

Adopt this structure, not only wick is difficult for deviating from from fuel tank, and can absorb lubricating oil with wick reliably,

The simple declaration of accompanying drawing

Fig. 1 is the front view of the apparatus for sewing of expression one embodiment of the invention.

Fig. 2 is the perspective view of expression the 2nd fuel tank.

Fig. 3 is the longitudinal sectional view of the 2nd fuel tank under expression lubricating oil inflow entrance and the fastened component fastening state.

Fig. 4 is the longitudinal sectional view of the 2nd fuel tank under expression lubricating oil inflow entrance and the non-fastening state of fastened component.

Fig. 5 is the stereogram of the fastened component of the inaccessible mechanism of expression.

Fig. 6 is the transverse sectional view of expression the 2nd fuel tank.

Fig. 7 is the longitudinal sectional view of the inaccessible mechanism of expression variation.

Fig. 8 is the stereogram of the variation of expression rib.

Fig. 9 is the transverse sectional view of the variation of presentation graphs 6.

Figure 10 is the figure suitable with Fig. 1 of the traditional apparatus for sewing of expression.

The specific embodiment

Below, with reference to accompanying drawing one embodiment of the invention are described.

At first, Fig. 1 represents the front view of the integral body of apparatus for sewing of the present invention (hereinafter referred to as Sewing machines 1) 1.This Sewing machines 1 has Sewing machines horn portion 2 and is positioned at the base plate 5 of its below.In Sewing machines horn portion 2, be respectively charged into not shown such as the shank that shank is done the move back and forth up and down mechanical type mechanism of driving mechanism, thread take-up tension lever driving mechanism that thread take-up tension lever is up and down reciprocatingly driven etc. up and down.In base plate 5, pack into do such as a pair of shuttle driving mechanism 3,3, with the work feed tooth before and after and the work feed tooth driving mechanism that up and down reciprocatingly drives etc.These mechanical type mechanisms are driven respectively by electrical motor of sewing machine by last axle and lower shaft.

And, be provided with the 1st fuel tank (other fuel tank) 4 in horn portion 2, be provided with the 2nd fuel tank (fuel tank) 6 in base plate 5.These the 1st fuel tanks 4 and the 2nd fuel tank 6 interconnect by grease channel 7.In addition, the 2nd fuel tank 6 and a pair of shuttle driving mechanism 3,3 mutual differences of height are configured as small as possible, connect by grease channel 8,8 mutually.Like this, by reducing the difference of height of the 2nd fuel tank 6 and a pair of shuttle driving mechanism 3,3, can prevent as much as possible that lubricating oil is to the too much supply of described shuttle driving mechanism 3,3.Described grease channel 7,8 pipes by vinyl system constitute, and are respectively equipped with the wick 9 that is used for supplying lubricating oil in their inside.

For this reason, " wick " of the present invention is defined as follows.That is, utilizing capillarity, between what have 2 members of some differences of height (this case such as the 2nd fuel tank 6 and shuttle driving mechanism 3 between), can make the fabric rope of lubricating oil contact, is not to be used to light a fire.

Below, with reference to Fig. 2～Fig. 5 the 2nd fuel tank 6 is described.The 2nd fuel tank 6 integral body are roughly case shape, as shown in Figure 2, portion within it is formed with chamber A (setting a side of wick) that is communicated with a pair of patchhole 10,10 (peristome) that inserts wick 9 (also can with reference to Fig. 1) and the chamber B (setting a side of float) that separates and have the float 11 that is the case shape with respect to this chamber A by tabular rib 12,12 (limiting member, jut) respectively.Described patchhole 10,10 is connected with grease channel 8,8.

As Fig. 2 and shown in Figure 6, described rib 12,12 is positioned at the space (space of the centre of chamber A and chamber B) that side surface part and bottom surface sections by the 2nd fuel tank 6 form, on this side surface part and the bottom surface sections inwardly the side and above outstanding and form.And, in the central authorities of rib 12,12 gap 13 is set, chamber A is communicated with, so that the lubricating oil of supplying with in the 2nd fuel tank 6 is stored in described chamber A and the chamber B both sides with chamber B.

The height of rib 12 should be greater than the maximum amount of movement of the float 11 corresponding with the lubricating oil increase and decrease in the 2nd fuel tank 6.Can prevent reliably that thus float 11 from crossing rib 12,12 to chamber A side shifting.The 2nd fuel tank 6 is formed by transparent member, the action of visual lubricants capacity of energy and float 11.

In the bottom surface sections of chamber B, be provided with outstanding upward guide finger 20 (with reference to Fig. 3), and, bottom surface sections at float 11, that extend, that can engage with guide finger 20 upward guiding groove 19 is set, and thus, float 11 limits are moved up and down by guide finger 20 guiding (restriction) limits.The integral body of the 2nd fuel tank 6 is formed by transparent member, can visual lubricants capacity and float 11.

The upper central of chamber B is provided with the lubricating oil inflow entrance (supply unit) 14 that is connected with grease channel 7 (with reference to Fig. 1).As shown in Figure 3, in the inside of this lubricating oil inflow entrance 14, has the inaccessible mechanism that the quantity delivered of the lubricating oil that flows into from the 1st fuel tank 4 is regulated.In addition, on the next door of described lubricating oil inflow entrance 14, be provided with the airport 15 with external communications, thus, the moving up and down in linkage of float 11 that the suction and discharge of the air in the 2nd fuel tank 6 can cause with the quantity delivered of lubricating oil carried out.If the diameter of the peristome of described airport 15 is with respect to oil body: in the time of 40 ℃, CSt9.96 (Nippon Oil Co., Ltd: ソ-イ Application グ Le Block 10N) constitutes more than the 4mm, then can carry out the supply of the supply and exhaust and the lubricating oil of air well.

As shown in Figure 3, described lubricating oil inflow entrance 14 roughly is tubular, is communicated with respectively by internal diameter different hollow bulb 14a, 14b to form, and the hollow bulb 14b of the 2nd fuel tank 6 sides is the structures with internal diameter bigger than the hollow bulb 14a of the 1st fuel tank 4 sides.These hollow bulbs 14a, 14b are communicated with by stage portion 14c.

At the medial surface of chamber B, (being 5 places in the present embodiment) forms the outstanding protuberance 16 in side inwardly in many places around described medial surface, and this protuberance 16 is respectively towards upper and lower to the long chi shape of extending.And, the medial surface of chamber B, above it and following difference many places (being 8 places in the present embodiment) are provided with the outstanding hemispheric protuberance 17 in side inwardly.Thus, form each protuberance 16,17 by the medial surface with respect to chamber B, the medial surface that can prevent the lateral surface of float 11 and chamber B is affixed because of the viscosity of the oil film that produces in the gap of mutual face.

But, after lubricating oil is supplied with in the 2nd fuel tank 6 from the 1st fuel tank 4 by grease channel 7, lubricants capacities in the 2nd fuel tank 6 increase (among Fig. 3 with reference to pasta X) gradually, finally as shown in Figure 3, float 11 rises, the conus portion 18a that is arranged on fastened component 18 front ends on these float 11 tops stops up (fastening state) with lubricating oil inflow entrance 14, makes its further supplying lubricating oil.Described fastened component 18 is fixed with respect to float 11 insertion section 18c such as insert being shaped, screw thread is fixed, is pressed into, is imbedded, structure such as integrally formed is fixed but these fastened components 18 and float 11 fixing also can adopt.

As time goes on, pass through grease channel 8,8 to shuttle driving mechanism 3,3 supplying lubricating oils from the 2nd fuel tank 6, then as shown in Figure 4, the lubricating oil that are stored in the 2nd fuel tank 6 reduce (with reference to pasta Y among Fig. 4) gradually, and float 11 descends thereupon gradually.Like this, once the conus portion 18a of the fastened component 18 that engages with lubricating oil inflow entrance 14 opened (non-fastening state) gradually with described lubricating oil inflow entrance 14, thus, lubricating oil is supplied with in the 2nd fuel tank 6 by grease channel 7 from the 1st fuel tank 4 once more, thereby the lubricants capacity in the 2nd fuel tank increases, become above-mentioned state shown in Figure 3, so repeat above-mentioned effect.Acrylonitrile Butadiene Rubber) as the material of float 11, the member of enough buoyancy is preferably arranged, for lubricating oil such as NBR (third rare nitrile-butadiene rubber: resin such as.

Open and-shut mode to 18 pairs of lubricating oil inflow entrances 14 of above fastened component is investigated, from the state-transition of Fig. 3 is the process of state of Fig. 4, the conus portion 18a of fastened component 18 opens lubricating oil inflow entrance 14 gradually with increasing, if with the ormal weight of the lubricants capacity in the 2nd fuel tank 6 as benchmark, when then lubricants capacity was less than ormal weight, the conus portion 18a of fastened component 18 was open with at least a portion of lubricating oil inflow entrance 14.

On the contrary, change over to the process of state of Fig. 3 from the state of Fig. 4, the conus portion 18a of fastened component 18 closes lubricating oil inflow entrance 14 gradually, and when lubricants capacity reaches ormal weight when above, the conus portion 18a of fastened component 18 closes at least a portion of lubricating oil inflow entrance 14.

But as shown in Figure 5, fastened component 18 is cylindric for long chi, and its front end forms as conus portion 18a, forms a plurality of grooves 21 at length direction.In fastened component 18, this groove 21 from float 11 towards above the total length of columnar portion 18b of outstanding part form, and be formed up to the part of conus portion 18a always.By forming so groove 21, lubricating oil is supplied with in the 2nd fuel tank 6 along above-mentioned groove 21 easily, simultaneously, can be because of the pressure of lubricating oil to the 2nd fuel tank 6 (promptly, downwards) outflow, the engaging of fastened component 18 and lubricating oil inflow entrance 14 (in other words, fastened component 18 move towards the top) counteracted.

In addition, the material of fastened component 18 is by deciding its hardness difference of both sides' material with the relation of the material of the lubricating oil inflow entrance 14 that engages.As an example, with iron the occasion that main component is shaped such as lubricating oil inflow entrance 14, fastened component 18 can aluminium be that main component is shaped also.Structure like this, iron is than aluminium hardness height, in the process that repeats to engage, small distortion takes place in fastened component 18 gradually, become and the corresponding shape of the shape of lubricating oil inflow entrance 14,, can interdict the supply of lubricating oil reliably so above-mentioned fastened component 18 can correctly stop up lubricating oil inflow entrance 14.

Shown in Figure 6 as the transverse cross-sectional view of the 2nd fuel tank 6 as described in seeing from in-plane, in patchhole 10,10, the wick 9 that is provided in the 2nd fuel tank 6 inserts (in the A of chamber) in the 2nd fuel tank 6 from a side, outside the opposing party exports to the 2nd fuel tank 6 (outside the A of chamber).Adopt this structure, such as if the top board face of the chamber A of the 2nd fuel tank 6 is made structure to be opened/closed (concrete structure is not shown), then the operator is open with described top board face, easily wick 9 is inserted or derive patchhole 10,10 with regard to available pincet etc., so can improve the productivity of apparatus for sewing.

Apparatus for sewing of the present invention can carry out various distortion and expansion in the aim scope.Such as, as shown in Figure 7, fastened component 18 is not directly to engage with lubricating oil inflow entrance 14, but the structure that engages with the silicone rubber cylindraceous 22 that is fixed on lubricating oil inflow entrance 14.By such structure, compare with lubricating oil inflow entrance 14 being processed into the cone shape corresponding shape of fastened component 18, easy to manufacture, can reduce manufacturing cost.As the member that is fixed on the lubricating oil inflow entrance 14, Acrylonitrile Butadiene Rubber), UR (polyurethane rubber: Urethane Rubber), FR (fluorubber: Fluoro Rubber) etc. be not limited to silicone rubber 22, also can use (third rare nitrile one butadiene rubber: such as NBR.

As shown in Figure 8,1 rib 12a also can be set and replace rib 12,12.This occasion if side form to be communicated with the notch part 12b that described chamber A and chamber B use below rib 12a, then can obtain effect same as the previously described embodiments.Be communicated with closely connect and make the chamber A and the chamber B of wick 9 so long as can prevent float 11, then the shape and the position thereof of the shape of rib, gap (notch part) do not have special qualification.Though not shown, also can protuberance be set at the outer peripheral face of float 11, the mobile of horizontal direction of this float 11 limited, itself and wick 9 are closely connect.

As shown in Figure 9, the insertion of 9 pairs of patchholes of wick 10,10 also can be that wick is divided into 2 wick 9a, 9b, and separately front end is inserted in the described patchhole 10,10, absorbs lubricating oil thus.And, also can be at wick be divided into 2 strands midway.Number to inserting hole does not limit yet.

So long as can absorb lubricating oil from the 2nd fuel tank 6, the position of wick 9 (position of patchhole 10) the also top of the 2nd fuel tank 6 and pars intermedia etc. then.

If what can prevent contacting of float 11 and wick 9, then also can form the protuberance of giving prominence to from the bottom surface of the 2nd fuel tank 6 (not shown).

Also can adopt moving up and down by float 11 with open in the way of grease channel 7 or inaccessible structure.

In addition, the lubricating oil of supplying with from the 2nd fuel tank is not limited to shuttle driving mechanism 3,3, but also supplies with not shown such as the main shaft that suture needle is moved up and down (going up axle), the structure of motion portions such as lower shaft, cloth feeding mechanism, tension disk with this main shaft interlock respectively.

In addition, a plurality of lubricating oil inflow entrances 14 and the fastened component 18 corresponding with it also can be set.This occasion, such as, the height and position of several lubricating oil inflow entrances 14 in a plurality of lubricating oil inflow entrances 14 made have nothing in common with each other, the length of the fastened component 18 that will engage with these lubricating oil inflow entrances 14 is such as having nothing in common with each other by formation such as springs simultaneously, then can carry out more refined control to above-mentioned lubricants capacity according to lubricants capacity (quantitatively) at least a portion of lubricating oil inflow entrance 14 or all open by stages, close.

Claims (10)

1. an apparatus for sewing comprises: the fuel tank that stores lubricating oil; Be arranged in this fuel tank, in linkage the lubricants capacity that flows in this fuel tank regulated the float of usefulness according to the lubricants capacity in this fuel tank; And a part of wick that is equipped in the described fuel tank, it is characterized in that,

Described apparatus for sewing is provided with the guide finger that moves up and down of the described float of guiding in described fuel tank,

In described fuel tank, be formed with described float of restriction and the approaching limiting member of described wick.

2. apparatus for sewing as claimed in claim 1 is characterized in that, described limiting member is the jut that is formed on the inboard face of described fuel tank.

3. apparatus for sewing as claimed in claim 1 is characterized in that, described limiting member is the tab-like inboard facial and rib between described float and described wick that is formed in described fuel tank.

4. apparatus for sewing as claimed in claim 1 is characterized in that described fuel tank has side surface part and bottom surface sections, and described limiting member is to be positioned at the space that formed by described side surface part and bottom surface sections and at the outstanding rib that forms of described bottom surface sections.

5. apparatus for sewing as claimed in claim 4 is characterized in that, the height of described rib should form the maximum amount of movement greater than the float corresponding with described lubricating oil increase and decrease.

6. apparatus for sewing as claimed in claim 4, it is characterized in that, described rib is formed on the position between described float and the described wick, in described fuel tank, with described rib is the boundary, the supply unit that supplying lubricating oil is used is arranged on a side that is equipped with described float, is formed with breach or gap on described rib, and this breach or gap can make the described wick in the described fuel tank set side and set between the side with described float and be communicated with.

7. apparatus for sewing as claimed in claim 6, it is characterized in that, inaccessible mechanism in described supply unit setting and the interlock of described float, when the lubricants capacity in the described fuel tank reaches ormal weight when above, described inaccessible mechanism closes at least a portion of described supply unit, when lubricants capacity does not reach ormal weight, that at least a portion of described supply unit is open.

8. as claim 6 or 7 described apparatus for sewing, it is characterized in that described fuel tank can be from other fuel tank supplying lubricating oil by described supply unit.

9. apparatus for sewing as claimed in claim 8 is characterized in that, the lubricating oil storage capacity of described other fuel tank is more than described fuel tank.

10. apparatus for sewing as claimed in claim 8 is characterized in that, described fuel tank has 2 peristomes at least, and the wick of rope shape extends outside described fuel tank from these peristomes, and the middle part of described wick is in described fuel tank.

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