CN1089828C

CN1089828C - Sewing machine with dismounting fixed bushing

Info

Publication number: CN1089828C
Application number: CN00100472A
Authority: CN
Inventors: 克里斯托夫·黑克纳; 马蒂亚斯·贝尔特拉姆
Original assignee: Duerkopp Adler AG
Current assignee: Duerkopp Adler AG
Priority date: 1999-02-13
Filing date: 2000-01-27
Publication date: 2002-08-28
Anticipated expiration: 2020-01-27
Also published as: KR100546107B1; JP4121686B2; CN1263959A; DE19906106C1; KR20000075447A; JP2000237479A

Abstract

In the sewing machine provided with a bearing bush fixed so as to be able to be disassemblabled in a housing hole 9 for supporting a component (clothes pressing rod), holes 10, 10' crossing the housing hole 9 are arranged parallelly to the vertical line A of the housing hole 9, clamping means arranged inside horizontal holes 11, 11' advancing to the holes 10, 10' individually can press the bearing bush in the radial direction, and cylinder pins 13, 13' are inserted in the holes 10, 10' individually, the cylinder pins can be radially compressed on the bush recuring to the horizontal holes 11, 11'.

Description

Sewing machines with detachable lining of fixing

The present invention relates to have a Sewing machines that is used to support parts lining (compress bar, shank), that in housing bore, removably be fixed.

For example known this Sewing machines by DE-PS1090942 (with US2,921,545 unanimities).Lining clamps to connect by dismountable screw one and is vertically fixed in the housing bore that is positioned on the robotic arm.For this reason, be provided with in the front of robotic arm one with the housing bore vertical stretching, end at the screwed hole in the housing bore.A counter-sunk screw is screwed in this screwed hole, by being screwed into screw lining is fixed to clamp in housing bore.

Lining pinpoint prerequisite in housing bore is certain cooperation, and exactly, machining tolerance is wanted accurately, and it has caused the rising of manufacturing expense.If the cooperation tension can make and install or dismantle complicated, these parts are moved mutually because have only with corresponding power.

Lining is not moved, pinching screw must be tightened at full tilt.In order to have enough self-lubricating properties, lining is with the soft metal, for example with the bronze manufacturing.If the tension that pinching screw is twisted can not be got rid of in the helical-tip jacking lagging material, and damage lining in this case, like this, can add to the difficulties when in the belt man does, dismantling lining.Consequent another shortcoming is, lining can be owing to be crushed to the power of its effect (screw power and the power of end opposite adverse effect on diameter), exactly distortion, thus have influence on its bearing capacity.

For fear of the damage lining, people transfer lining is bonded in the housing bore.The shortcoming of this method is must prepare bonding position very carefully, so that guarantee bonding reliably.Another with bonding relevant shortcoming is, changes the compress bar and more resleeve is very bothersome.Can only just can unclamp with brute force this bonding, if the gasket end of stretching from robotic arm is knocked with brute force, then can cause lining and/or compress bar the damage.

Because the illustrated difficulty that lining is fixed in the Sewing machines, the starting point of people when design be, lining one except changing fully-needn't from machine case, take out as far as possible.This bar structural design that has caused being contained in the lining is restricted.Because, exactly, must dismantle other part from machine case, so that near lining because the Sewing machines structure situation can only be installed or removal rod from the lining upside.

From this problem that proposes, the Sewing machines of beginning explanation will improve like this, and lining can be pulled down simply, between lining and housing bore special cooperation needn't be arranged, and can get rid of the lining damage fixedly the time effectively.

In order to address this problem, to the so further structure of the Sewing machines that starts described kind, two holes parallel with the housing bore longitudinal axis, that intersect with housing bore promptly are set, extend into transverse holes wherein and be provided with insertion cylindrical pin wherein for each hole in these two holes respectively is provided with one, this cylindrical pin can radially be pressed onto on the lining by means of the clamping device in the transverse holes of packing into.

By this structure, can adopt the free size tolerance to make lining and the housing bore that holds lining.When installation and removal, can get rid of two mutual intractabilities of part, save all power consumption like this.Therefore, can mount and dismount fast and easily.The cylindrical pin line is pressed on the lining contiguously, compares with a contact, has obviously reduced the danger of lining distortion this moment.

By cylindrical pin is pressed onto on the lining, the lining opposition side at first moves in housing bore, and with the same line of housing hole wall contiguously by putting.Therefore, lining is supported on three lines that are distributed on the circumference, can make lining reliable and firmly fix and location accurately by this.

Adopt the present invention, further advantage is, now, at the design lining with when being installed in bar in the lining, related lining can and need not spend special time ground with plain mode and dismantle and assemble.

Especially, transverse holes is provided with screw thread at least in part, can use screw as clamping device like this.

If cylindrical pin in the patchhole, can guarantee that with a gap cylindrical pin can drop out from its seat together with lining after unclamping clamping device, can be not influential when dismounting unfixing block the tension problem.

Describe one embodiment of the present of invention in detail by means of accompanying drawing below.Wherein:

Fig. 1: the schematic elevational view of Sewing machines;

Fig. 2: along the phantom of the II-II line of Fig. 1;

Fig. 3: view lining and cylindrical pin, similar to Fig. 2 of not packing into;

Fig. 4: the part sectional side elevation of lining;

Fig. 5: the view of cylindrical pin;

Fig. 6: along the simple view of direction VI among Fig. 1.

Described Sewing machines has a housing, and this housing is formed by sewing machine table 1, column 2 with from column 2 arms 3 that stretch out, on workbench 1 basically.In addition, a shank 4 and a compress bar 6 are being supported in vibration drivingly in arm 3, are fixing pin 5 in shank 4 lower ends, are fixing transport in compress bar 6 lower ends.Compress bar 6 moves in the lining 8 that removably is placed in 9 li of housing bores.

8 longitudinal axis A are parallel with lining, are provided with two holes 10,10 ' in the bottom of arm 3, and the central point of their central point and housing bore 9 is close to like this, make hole 10,10 ' and hole 9 intersect (Fig. 3).Meet at right angles with hole 10,10 ', be provided with two transverse holes 11,11 ' in arm 3, these two transverse holes are led to and are ended in the

hole

10,10 '.Transverse holes 11,11 ' is provided with internal thread at least in part, and like this, screw 12,12 ' can be screwed into.(general) cylindrical pin 13,13 ' can patchhole in 10,10 '.

If be screwed into screw 12,12 ' (Fig. 2), the lining 8 that inserts 9 li of housing bores is forced on the wall of housing bore 9 by

cylindrical pin

13,13 '.In this case, cylindrical pin 13,13 ' contacts with lining 8 along a line.On a side opposite with cylindrical pin 13,13 ', lining 8 also along a line bearing in housing bore 9.Therefore, lining 8 is clamped along three lines that distribute on circumference.

Between lining 8 and housing bore 9, be provided with a gap.Thereby the present invention can be used for making the external diameter and the housing bore 9 of lining 8 respectively with favourable cost with bigger manufacturing tolerance.Cylindrical pin 13,13 ' is with a gap in the

patchhole

10,10 '.Unclamping screw 12,12 ' afterwards, cylindrical pin 13,13 ' and lining 8 from machine case, drop out.So, can be in the shortest time more resleeve 8 and/or compress bar 6.

REFERENCE NUMBER LIST

1 sewing machine table

2 columns

3 arms

4 shanks

5 pins

6 compress bars

7 transports

10 ' hole, 8 lining 9 housing bores, 10 holes, 11 transverse holes, 11 ' transverse holes, 12 screws, 12 ' screw, 13 cylindrical pins, 13 ' cylindrical pin A longitudinal axis

Claims

1. have a Sewing machines that is used to support lining (8) parts (compress bar 6, shank 4), that removably be fixed in housing bore (9) lining, it is characterized in that,

Be provided with two parallel with housing bore (9) longitudinal axis A, as to intersect with housing bore (9) holes (10,10 ');

For each hole (10,10 ') respectively is provided with a transverse holes (11,11 ') that extend into wherein;

For each hole (10,10 ') respectively is provided with insertion cylindrical pin (13,13 ') wherein, this cylindrical pin can radially be pressed onto on the lining (8) by means of the clamping device (12,12 ') of the transverse holes of packing into (11,11 ') lining.

2. according to the described Sewing machines of claim 1, it is characterized in that,

These transverse holes (11,11 ') are provided with screw thread at least in part, and these clamping devices (12,12 ') are screws.

3. according to the described Sewing machines of claim 1, it is characterized in that,

Cylindrical pin (13,13 ') can have lining, certain interval ground patchhole (10,10 ').

4. according to the described Sewing machines of claim 1, it is characterized in that,

Between lining (8) and housing bore (9), be provided with a gap.