CN101660248A - Extraneous matter detecting device of button hole serging machine - Google Patents
Extraneous matter detecting device of button hole serging machine Download PDFInfo
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- CN101660248A CN101660248A CN 200910171422 CN200910171422A CN101660248A CN 101660248 A CN101660248 A CN 101660248A CN 200910171422 CN200910171422 CN 200910171422 CN 200910171422 A CN200910171422 A CN 200910171422A CN 101660248 A CN101660248 A CN 101660248A
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Abstract
The invention relates to an extraneous matter detecting device of a button hole serging machine, which can lighten the monitoring burthen of a user, and prevent the breakage of a hammering portion ora cutter and the breakage of the cloth. The button hole serging machine has an cutter, a cutting feed station, a hammering portion, a supporting station, an acting mechanism, a drive device and a control unit. The extraneous matter detecting device has a detection unit arranged on the supporting station, reciprocating with the hammering portion, surrounding the region where the hammering portion reciprocates, arranged under the hammering portion and detecting a descending position contacted with the object arranged under the detection unit, and a storage cell for storing a limiting value of adescending amount of the hammering portion capable of determining that the sewed article has no extraneous matters from the primary position, wherein, the control unit, when the detection unit detectsthe object, controls the drive device to drive if the descending amount of the hammering portion from the primary position is more than or equal to the limiting value, and controls the drive device to stop the drive if the descending amount of the hammering portion from the primary position is smaller than the limiting value.
Description
Technical field
The present invention relates to a kind of detection device for foreign matter of buttonholing machine, this buttonholing machine utilizes cutting knife and hammering portion that sewn object is clipped in the middle, and forms the button hole on sewn object.
Background technology
Known a kind of buttonholing machine, it can form latasuture system portion about comprising on as the cloth of sewn object before interior Buttonhole stitching or after forming, about latasuture system portion between form the button hole.
For example, as shown in figure 17, buttonholing machine 100, upper surface, the feeding platform 102 that setting can move freely along its upper surface in sewing machine base portion 101.At the upper surface of feeding platform 102, the cloth pressing 103 of pushing cloth is set.By the cloth that is pressed on the feeding platform 102, moved and can on cloth, form the stitching of lockstitching a border by cloth pressing 103 by feeding platform 102.
Patent documentation 1: the spy of Japan opens the 2006-87813 communique
Summary of the invention
But, in existing buttonholing machine, can't detect between hammering portion and cutting knife, exist except cloth with make irrelevant foreign matter.Thus, the user must always monitor whether there is foreign matter on the cloth in the process of making.And, do not notice that the user under the situation of the foreign matter on the cloth, hammering portion and cutting knife are clipped in the middle foreign matter, can cause the problem of the breakage of the damage of hammering portion and cutting knife and cloth.
Thus, the present invention proposes in order to solve above-mentioned problem, and its objective is provides a kind of buttonholing machine, and it can prevent the damage of hammering portion and cutting knife and the breakage of cloth, alleviates the supervision burden of user in making.
The invention of record is a kind of detection device for foreign matter of buttonholing machine in the technical scheme 1, and this buttonholing machine has:
Cutting knife (11), it is arranged in the sewing machine base portion (2), forms cutoff edge in the upper end;
Feeding platform (4), it is arranged in the sewing machine base portion, at upper surface mounting sewn object;
Hammering portion (12), it is arranged on the sewing machine arm (3), and dispose relative with described cutting knife sandwiches sewn object and cuts off sewn object between itself and described cutting knife;
Brace table (14), it supports described hammering portion;
Actuating mechanism (40), itself and described brace table link, make described hammering portion to described cutting knife approaching/leave;
Drive unit (50), itself and described actuating mechanism link, and make this actuating mechanism action; And
Control module (20), it controls the driving of described drive unit,
This buttonholing machine (1), comprise left and right sides in formation on the sewn object and make portion before interior Buttonhole stitching or after forming, utilize described control module that described drive unit is driven, described hammering portion is moved to described cutting knife, make formation button hole between the portion at the left and right sides of sewn object
It is characterized in that this detection device for foreign matter has:
Detecting unit (30,100,200,300,400,500), it is arranged on the described brace table, move up and down with described hammering portion, surround the zone that described hammering portion moves up and down, be configured in described hammering portion and compare on the position that is positioned at the below, detect the down position that contacts with the object that is positioned at lower position; And
Memory cell (24), its storage can be assert the limiting value that does not have the slippage that the described hammering of foreign matter portion begins from primary position on sewn object,
Described control module,
Detect under the situation of slippage that described hammering of the moment portion of object begins from primary position at described detecting unit, the driving of described drive unit continued more than or equal to described limiting value,
Detect under the situation of slippage that described hammering of the moment portion of object begins from primary position at described detecting unit, the driving of described drive unit is stopped less than described limiting value.
The invention of record in the technical scheme 2, the detection device for foreign matter of the buttonholing machine of record is characterized in that in technical scheme 1,
Described detecting unit has:
Pedestal (31,101,201,301,401,501), it is fixed on the described brace table;
Contact component (32,102,202,302,402,502), it can freedom be arranged on the described pedestal up or down, form and surround the zone that described hammering portion moves up and down, the lower surface is configured in the lower end of described hammering portion and compares on the position that is positioned at the below;
Pretension parts (33,104,202,303,403,503), it is this contact component pretension downwards, compares on the position that is positioned at the below so that the lower surface of described contact component is configured in the lower end of described hammering portion; And
Detection part (34,103,203,304,404,504), it detects described contact component and resists the pretightning force of described pretension parts and relatively moving with respect to described pedestal.
The invention of record in the technical scheme 3, the detection device for foreign matter of record is characterized in that in technical scheme 1 or 2,
Have setup unit (66), it sets described limiting value.
The effect of invention
According to the invention of record in the technical scheme 1, brace table is descended, then the hammering subordinate falls, and with hammering portion, detecting unit also descends.
Here, if detecting unit detected object thing, then control module detects at detecting unit under the situation of slippage more than or equal to limiting value that the hammering portion in the moment of object begins from primary position, continues the driving of drive unit.That is, detecting unit detects under the situation of object on the position of comparing with the position that becomes limiting value below being positioned at, and control module judges that this detection is not a foreign matter, directly proceeds the cut-out of sewn object.
On the other hand, control module detects at detecting unit under the situation of slippage less than limiting value that the hammering portion in the moment of object begins from primary position, and the driving of drive unit is stopped.That is, detecting unit detects under the situation of object on the position of comparing with the limiting value position above being positioned at, and control module judges that this detection is not a sewn object but foreign matter stops the driving of drive unit, interrupts the cut-out of sewn object.
Thus, by with corresponding are stored in memory cell such as thickness of limiting value with sewn object, control module can judge that the detection of detecting unit is sewn object or foreign matter, carries out the cut-out control of sewn object.
Therefore, the supervision burden of the user in the process of making be can alleviate, the damage of hammering portion and cutting knife, the breakage of cloth prevented.
In addition, because detecting unit surrounds the zone that hammering portion moves up and down, be configured on the position of comparing the below with hammering portion, so compare with hammering portion, detecting unit at first contacts with sewn object or foreign matter.Thus, can carry out foreign matter before the breakage of damage that hammering portion and cutting knife take place and cloth detects.
According to the invention of record in the technical scheme 2, contact component utilizes pretension parts pretension, compares with the lower end of hammering portion on the position that is positioned at the below so that its lower surface is configured in, compare with hammering portion its at first with sewn object or foreign matter butt.And during owing to contact component and sewn object or foreign matter butt, contact component can not continue to descend, and is moved upward with respect to pedestal so resist the pretightning force of pretension parts.If contact component moves with respect to pedestal, then detection part detects moving of contact component.
And, because contact component surrounds the zone that hammering portion moves up and down, with sewn object or foreign matter butt after no longer continue to descend, the pretightning force of opposing pretension parts and relatively moving upward with respect to pedestal is so the hammering subordinate drops to contact component and compares on the position that is positioned at the below soon.
Thus, under the situation of slippage more than or equal to limiting value that hammering portion begins from primary position, control module continues the driving of drive unit, and contact component can not hinder moving of hammering portion.
According to the invention of record in the technical scheme 3, by having setup unit, the user can be corresponding with the thickness of sewn object and the size of foreign matter etc., freely sets limiting value.
Thus, can be corresponding with all sewn objects, foreign matter.
Description of drawings
Fig. 1 is the side view of the summary of expression buttonholing machine.
Fig. 2 is the actuating mechanism of expression brace table and cuts the side view of cloth motor mechanism.
Fig. 3 is the oblique view that is fixed on the checkout gear on the brace table.
Fig. 4 is the hammering portion of expression hammering portion when being positioned at top dead-centre and the figure of the position relation of framework.
Fig. 5 is the block diagram of the formation of expression control device periphery.
Fig. 6 is the flow chart of expression teaching flow process.
Fig. 7 is the flow chart of flow process that the drive controlling of cloth motor is cut in expression.
Fig. 8 is illustrated under the situation that does not have foreign matter on the cloth, the figure of the position relation of framework when the hammering subordinate reduces to the cloth upper surface and hammering portion.
Fig. 9 is illustrated under the situation that has foreign matter on the cloth, the figure of the state when framework and foreign matter butt.
Figure 10 is the front view of formation of the checkout gear of explanation variation 1.
Figure 11 is the vertical view of the surveyed area of the laser sensor of explanation in the checkout gear of variation 1.
Figure 12 is the oblique view of formation of the checkout gear of explanation variation 1.
Figure 13 is the vertical view of formation of the checkout gear of explanation variation 2.
Figure 14 is the vertical view of formation of the checkout gear of explanation variation 3.
Figure 15 is the vertical view of formation of the checkout gear of explanation variation 4.
Figure 16 is the vertical view of formation of the checkout gear of explanation variation 5.
Figure 17 is the side view that section is observed the part of the buttonholing machine in the present technology.
The specific embodiment
Describe the embodiment of the detection device for foreign matter of buttonholing machine involved in the present invention in detail.
(formation of buttonholing machine)
As shown in Figures 1 and 2, buttonholing machine 1 is to be to form on the cloth to comprise left and right sides and make portion at interior button hole stitching at sewn object, forms the Sewing machines in button hole simultaneously between the portion of the latasuture system about cloth.
Cloth pressing 5 has: presser feet wrist 52, and it can be arranged on the upper surface of feeding platform 4 with rotating freely; Pressure foot 54, it can be arranged on the front end of presser feet wrist 52 with rotating freely, pushes cloth from the top.Presser feet wrist 52, pressure foot 54 all can be rotated freely, and are for corresponding with the variation of fabric thickness neatly, carry out pushing of cloth reliably from the top.
(cloth-cutting apparatus)
As shown in Figure 1 and Figure 2, cloth-cutting apparatus 10 has: cutting knife 11, and it is arranged on the pedestal part 2, forms cutoff edge in the upper end; And hammering portion 12, it is arranged on the arm 3, with these cutting knife 11 relative configurations, sandwiches cloth and cloth is cut off by cutting knife 11 between itself and cutting knife 11.
Cutting knife 11 can be installed on the cutting knife brace table 13 with freely dismantling, and this brace table 13 is fixed on the pedestal part 2.Cutting knife 11 forms cutoff edge in the upper end of cutting cloth.The cutoff edge of cutting knife 11 makes round-nose cutting tool portion form continuously mutually with straight line cutting knife portion, and wherein, this round-nose cutting tool portion forms round end portion, and this straight line cutting knife portion forms line part.
Hammering portion 12 can be installed on the brace table 14 with freely dismantling, and brace table 14 supports hammering portion 12 in its bottom.Hammering portion 12 is arranged on the position relative with the cutoff edge of cutting knife 11, can drop to the position of pushing cutting knife with cutting knife 11 butts.
Link actuating mechanism 40 on brace table 14, it moves up and down hammering portion 12 by brace table 14 is moved up and down.Actuating mechanism 40 for example has linkage and constitutes, and it has: the 1st connecting rod 41, and it can be attached on the brace table 14 with rotating freely; The 2nd connecting rod 42, it can be attached on the 1st connecting rod 41 with rotating freely; The 3rd connecting rod 43, it can be attached on the 2nd connecting rod 42 with rotating freely; And the 4th connecting rod 44, it can be attached on the 3rd connecting rod 43 with rotating freely.The 1st connecting rod 41 and the 3rd connecting rod 43, central portion separately can be fixed on the arm 3 with rotating freely.The 4th connecting rod 44 can be attached on the moving body 46 with rotating freely, this moving body 46 and ball-screw 45 engagements.Ball-screw 45 is configured to, and its axis is along the above-below direction of Sewing machines.Moving body 46 by pivoting of ball-screw 45, can move along its axis direction.In the end of ball-screw 45 gear 47 is set, meshing gear 48 on this gear 47,48 of this gears are supported on the output shaft 50a that cuts cloth motor 50 as the drive unit that makes actuating mechanism 40 action.
Utilize actuating mechanism 40, hammering portion 12 begins to descend from the lifting position as primary position, moves back and forth between the pressing position of pushing cutting knife 11.
(checkout gear)
As Fig. 2～shown in Figure 4, on brace table 14, be provided as the checkout gear 30 of detecting unit, it moves up and down with hammering portion, surround the zone that hammering portion 12 moves up and down, be configured in hammering portion and compare on the position that is positioned at the below, detect the down position that contacts with the object that is positioned at lower position.
What is called is surrounded the zone that hammering portion 12 moves up and down, and is meant the shape of framework 32 in concrete example, is to observe the shape that at least a portion around the hammering portion 12 is surrounded from above-below direction.This shape can be considered square, ellipse, circle or the different shapes such as shape that their part is cut.
By such formation, brace table 14 is descended, make under the situation that hammering portion 12 and framework 32 descend, if there is foreign matter on the cloth, then compare with hammering portion 12, framework 32 at first with the foreign matter butt.By framework 32 and foreign matter butt, stop it to continue to descend, but brace table 14 to drop to the position that hammering portion 12 and cutting knife 11 are connected, so hammering portion 12 continues to descend.Thus, the pretightning force of framework 32 antagonistic springs 33 relatively moves upward with respect to pedestal 31.Its result, potentiometer 34 detects moving of axial region 32b, and control device 20 is corresponding with the slippage of the hammering portion 12 that detects the moment that axial region 32b moves at potentiometer 34, controls the driving of cutting cloth motor 50.
And,,, can detect the pretightning force of framework 32 antagonistic springs 33 and relatively moving of pedestal 31 relatively so utilize potentiometer 34 because spring is always with framework pretension downwards.
(control device)
As shown in Figure 5, control device 20 has: CPU 21, and it carries out the calculation process relevant with the driving of Sewing machines 1, carries out the control of drive source; ROM 22, required program when its storage data necessary relevant with making and cut cloth and parameter and CPU 22 carry out the drive controlling of Sewing machines 1; RAM 23, and it is as the working region of CPU 21; And EEPROM 24, data that its storage is set by the user and the data after the computing.
In EEPROM 24, storage can be assert does not have the limiting value (minimum slippage) from the slippage of primary position (top dead-centre of lifting position) beginning foreign matter, hammering portion 12 on the cloth.That is, EEPROM 24 acts on as memory cell.Thus, potentiometer 34 detects the whether situation of the value of overstepping the extreme limit of object hammering portion 12 slippages constantly, is used for the judgement of foreign matter.
And in EEPROM 24, storage hammering portion 12 is the displacement of (position that connects with cutting knife 11) from primary position (top dead-centre) to pressing position.
In ROM 22, the control program of the driving of cloth motor 50 is cut in storage control.That is, CPU 21 makes control device 20 as the control module effect by carrying out this control program.
Detect the slippage that object hammering portion 12 constantly begins from primary position at checkout gear 30 and be greater than or equal under the situation of the limiting value of storage among EEPROM 24, control program continues the driving of cutting cloth motor 50.That is, at framework 32 and object butt, the pretightning force of antagonistic spring 33 and when relatively moving upward with respect to pedestal 31, potentiometer 34 detects moving of frameworks 32.And, if this moment, hammering portion 12 position was to compare the position that is positioned at the below with the down position that is equivalent to limiting value, then with framework 32 butts be not foreign matter but cloth continues the driving of cutting cloth motor 50, carry out Qie Bu.
In addition, detect under the situation of slippage less than limiting value that object hammering portion 12 constantly begins from primary position at checkout gear 30, control program stops the driving of cutting cloth motor 50.That is, at framework 32 and object butt, the pretightning force of antagonistic spring 33 and when relatively moving upward with respect to pedestal 31, potentiometer 34 detects moving of framework 32.And, if this moment, hammering portion 12 position was to compare the position that is positioned at the top with the down position that is equivalent to limiting value, then with framework 32 butts be foreign matter, the driving of cutting cloth motor 50 is stopped, preventing contacting of hammering portion 12 and foreign matter in advance.
Thus, the detection device for foreign matter that is provided with in buttonholing machine 1 is by having control device 30 and checkout gear 30 constitutes.
Therefore, limiting value for example is set at following amount (distance), that is, under the situation that does not have the mounting cloth at feeding platform 4 primary position of hammering portion 12 begin to cutting knife 11 butts till slippage, deduct the amount (distance) of fabric thickness.Thus, detecting unit 30 carries out the detection of foreign matter at the upper surface of cloth.
Certainly, not necessarily carry out the detection of foreign matter at the cloth upper surface, limiting value can freely be set by the user.
On control device 20, connect: potentiometer 34; Cut cloth motor 50, it becomes the drive source when cutting cloth; Sewing machine electromotor 61, it moves up and down suture needle; X feeding pulse motor 62, it makes feeding platform 4 drive along directions X; Y feeding pulse motor 63, it makes feeding platform 4 drive along the Y direction; Rotary pulsed motor 64, it makes suture needle and the rotation of looper device; S/S switch 65, it makes the input that begins to stop; Guidance panel 66, it shows the information of informing to the user, imports the indication from the user simultaneously; And encoder 67, it detects the dropping distance that begins from the top dead-centre of brace table 14 (hammering portion 12).
Can set limiting value from guidance panel 66.That is, guidance panel 66 acts on as setup unit.
(teaching of limiting value)
The teaching of limiting value as shown in Figure 6, if finish the information (step S1) that the cloth to feeding platform 4 is provided with from inputs such as guidance panel 66 expressions, then CPU 21 has judged whether to import the information (step S2) of expression teaching.Here, if CPU 21 judges the information (step S2: be) of having imported the expression teaching, then CPU 21 makes and cuts 50 drivings (step S3) of cloth motor.By cutting the driving of cloth motor 50, output shaft 50a pivots, and utilizes the rotation of output shaft 50a and gear 48 rotations, and gear 47 also rotates thereupon.Because utilize the rotation of gear 47, ball-screw 45 also pivots,, make actuating mechanism 40 actions so moving body 46 moves along the axis of ball-screw 45.Utilize the action of actuating mechanism 40, brace table 14 descends, and hammering portion 12 and the framework 32 that is provided with on brace table 14 also descends thereupon.
And in the decline process, CPU 21 judges whether the voltage value that is detected by potentiometer 34 changes, and, judges whether to detect move (the step S4) of framework 32 with respect to pedestal 31 that is.In step S4, CPU 21 judges under the situation about being changed by potentiometer 34 detected voltage values (step S4: be), hammering portion 12 when CPU 21 detects potentiometer 34 voltage and changes, is stored in (step S5) among the EEPROM 24 as limiting value from the slippage of primary position (top dead-centre) beginning.Finish teaching thus.
In addition, the direct input or the teaching of limiting value can be selected by the input of user in guidance panel 66.
(about cutting the drive controlling of cloth motor)
Below, the drive controlling of cutting cloth motor 50 the when formation of carrying out the button hole is described.
As shown in Figure 7, if cut 50 drivings (step S11) of cloth motor, then, brace table 14 is descended by in the action of cutting the actuating mechanism 40 that links on the cloth motor 50 in order on cloth, to form the button hole, to make.By the decline of brace table 14, hammering portion 12 and framework 32 also descend.
Utilization cut that cloth motor 50 makes that hammering portion 12 and framework 32 descend during, CPU21 judges whether the voltage value that is detected by potentiometer 34 changes (step S12).
In step S12, judge under the situation that the voltage value that detected by potentiometer 34 changes (step S12: be) that at CPU 21 slippage that CPU 21 judges the hammering portion 12 when potentiometer 34 detects voltage and changes is whether more than or equal to the limiting value (step S13) of storage in EEPROM 24.In other words, when judging whether to be the lower position that is positioned in the position of hammering portion 12 with the corresponding position of limiting value, potentiometer 34 detects voltage change (step S14).On the other hand, in step S12, judge under the situation that the voltage value that is detected by potentiometer 34 not have to change at CPU 21 (step S12: not), Yi Bian then CPU 21 makes and cuts 50 drivings of cloth motor, Yi Bian the judgement of repeating step S12.
In step S13, the slippage of judging hammering portion 12 at CPU 21 is more than or equal under the situation of the limiting value of storage in EEPROM 24 (step S13: be), CPU 21 continues the driving of cutting cloth motor 50, judges whether hammering portion 12 drops to pressing position (position that connects with cutting knife 11) (step S14).
In step S14, as shown in Figure 8, judge that at CPU 21 hammering portions 12 drop under the situation of pressing position (position that connects with cutting knife 11) (step S14: be), CPU 21 makes and cuts cloth motor 50 and stop (step S15).On the other hand, in step S14, judge that at CPU 21 hammering portions 12 do not drop to that (step S14: not), CPU 21 continues the driving of cutting cloth motor 50 under the situation of pressing position (position that connects with cutting knife 11).
In step S13, as shown in Figure 9, (step S13: not), CPU 21 makes the driving of cutting cloth motor 50 stop (step S15) under the situation of slippage less than the limiting value of storage in EEPROM 24 of CPU 21 judgement hammering portions 12.
(action effect)
According to this buttonholing machine 1, if in mounting on the feeding platform 4 make under the state of cloth and cut cloth motor 50 and drive and make brace table 14 to descend, then hammering portion 12 descends, framework 32 also descends with hammering portion 12.
Here, if potentiometer 34 detects object, then control device 20, detect under the situation of slippage more than or equal to limiting value that object hammering portion 12 constantly begins from primary position at potentiometer 34, and the driving of cutting cloth motor 50 is continued.That is, as shown in Figure 8, on the position of comparing with the position that becomes limiting value below being positioned at, potentiometer 34 detects under the situation of object, control device 20 judge this detected be not foreign matter, directly proceed the cut-out of cloth.
On the other hand, control device 20 detects under the situation of slippage less than limiting value that object hammering portion 12 constantly begins from primary position at potentiometer 34, and the driving of cutting cloth motor 50 is stopped.That is, as shown in Figure 9, on the position of comparing with the position that becomes limiting value above being positioned at, framework 32 moves and potentiometer 34 detects under the situation of object, control device 20 judges it should detectedly was not cloth but foreign matter stops the driving of cutting cloth motor 50, the cut-out of interruption cloth.
Thus, by with corresponding are stored in EEPROM24 such as thickness of limiting value with cloth, it is cloth or foreign matter that control device 20 is judged detected by checkout gear 30, can carry out the cut-out control of cloth.
Thus, alleviate the supervision burden of user in making, can prevent the damage of hammering portion 12 and cutting knife 11 and the breakage of cloth.
And, because framework 32 is surrounded the zone that hammering portions 12 move up and down, and be configured in hammering portion 12 and compare on the position that is positioned at the below, at first can connect so compare framework 32 with foreign matter with hammering portion 12.Thus, can carry out foreign matter before the breakage of damage that causes hammering portion 12 and cutting knife 11 and cloth detects.
And framework 32 is by spring 33 pretensions, compares on the position that is positioned at the below so that its lower surface is configured in the lower end of hammering portion 12, compares with hammering portion 12 at first and cloth or foreign matter butt.And, because when framework 32 and cloth or foreign matter butt, framework 32 can't continue to descend, so the pretightning force of antagonistic spring 33 is moved upward with respect to pedestal 31.If framework 23 moves with respect to pedestal 31, then potentiometer 34 detects moving of framework 33.
In addition, because framework 32 is surrounded the zone that hammering portion 12 moves up and down, with cloth or foreign matter butt after be not continue to descend, but the pretightning force of antagonistic spring 33 and relatively moving upward with respect to pedestal 31 is compared on the position that is positioned at the below so the portion of hammering soon 12 drops to framework 32.
Thus, under the situation of the slippage that begins from primary position more than or equal to limiting value of hammering portion 12, control device 20 continues the driving of cutting cloth motor 50, and framework does not hinder moving of hammering portion 12.
And, owing to can set limiting values, so the user can be corresponding with the thickness of cloth and the size of foreign matter etc. and freely set limiting value by guidance panel 66.
Thus, can be corresponding with the cloth and the foreign matter of all thickness.
(variation 1)
Figure 10～Figure 12 is the figure of example that the checkout gear of laser sensor has been used in expression.In addition, for other the formation beyond the checkout gear, since identical with above-mentioned embodiment, so mark identical label, omit explanation.
As Figure 10～shown in Figure 12, checkout gear 100 has: pedestal 101, and it is fixed on the brace table 14; As the support plate 102 of contact component, it can freedom be arranged on the pedestal 101 up or down, surrounds the part of hammering portion 12, and the while extends on the extended line of the length direction of hammering portion 12 (cutting knife 11); As the laser sensor 103 of detection part, it is configured on the support plate 102; And as the spring 104 of pretension parts, it is compared this support plate 102 pretension downwards on the position that is positioned at the below so that the lower surface of support plate 102 is configured in the lower end of hammering portion 12.
Method is fixed on the brace table 14 pedestal 101 by screw is fastening etc.Certainly, pedestal 101 and brace table 14 are formed.Pedestal 101 is fixed on the rear side of the hammering portion 12 on the brace table 14.
One end of support plate 102 is bent to form in the mode of extending upward, at this kink place axis body 105 is set, and its above-below direction along support plate 102 extends.Axis body 105 is inserted in the pedestal 105.
As Figure 11, shown in Figure 12, laser sensor 103a, 103b are opposite each other, can send laser from a laser sensor 103a, and 103b receives this laser by another laser sensor.Laser sensor 103a, 103b all are connected with control device 20, can carry out light emitting control and the detection that is subjected to light by control device 20.Control device 20 by judging whether laser sensor 103b receives laser and can be subjected to having or not of light according to this, detects moving of axis body 105, that is, support plate 102 relatively moves with respect to pedestal 101.
As Figure 11, shown in Figure 12, the detection range of laser sensor 103a, 103b is to detect the scope of two regional A between the pressure foot 54, and this zone A becomes the mobile route of the hammering portion 12 that is positioned at cutting knife 11 tops.
By such formation, make in that brace table 14 is descended under the situation that hammering portion 12 and support plate 102 descend, if there is foreign matter on the cloth, then compare with hammering portion 12 support plate 102 at first with the foreign matter butt.Hinder it by support plate 102 and foreign matter butt and continue to descend, but because brace table 14 will drop to the position that hammering portion 12 and cutting knife 11 are connected, so hammering portion 12 continues to descend.Thus, the pretightning force of support plate 102 antagonistic springs 104 relatively moves upward with respect to pedestal 101.Its result carries out laser luminous and that be subjected to light and is cut off by hammering portion 12 between laser sensor 103a, 103b, laser sensor 103b can't be subjected to light.Thus, in the scope of the surveyed area of laser sensor 103a, 103b, can detect the foreign matter that is positioned at below the hammering portion 12.
(variation 2)
Figure 13 is the figure of example that the checkout gear of deformeter has been used in expression.In addition, for other the formation beyond the checkout gear, since identical with above-mentioned embodiment, so mark identical mark, omit explanation.
As shown in figure 13, checkout gear 200 has: pedestal 201, and it is fixed on the brace table 14; As the spring material 202 of contact component and pretension parts, it can freedom be arranged on the pedestal 201 up or down, surrounds the part of hammering portion 12, and the while extends on the extended line of the length direction of hammering portion 12 (cutting knife 11); And as the deformeter 203 of detection part, it is arranged on the spring material 202.
Method is fixed on the brace table 14 pedestal 201 by screw is fastening etc.Certainly, pedestal 201 and brace table 14 are formed.Pedestal 201 is fixed on the rear side of the hammering portion 12 on the brace table 14.
By such formation, brace table 14 is descended, make under the situation that hammering portion 12 and spring material 202 descend, if there is foreign matter on the cloth, then compare with hammering portion spring material 202 at first with the foreign matter butt.Hinder it by spring material 202 and foreign matter butt and continue to descend, but because brace table 14 will drop to the position that hammering portion 12 and cutting knife 11 are connected, so hammering portion 12 continues to descend.Thus, elastic deformations take place in spring material 202, resist the elastic force that self has and relatively move upward with respect to pedestal 201.At this moment, deformeter 203 utilizes the elastic deformation of spring material 202 and resistance value changes, so the current value that flows through also changes.
Thus, control device 20 is corresponding with the slippage of the hammering portion 12 in the moment of the current value variation of flowing through in deformeter 203, the driving that cloth motor 50 is cut in control.
In addition, the laminal flat spring by using easy deformation can improve the sensitivity that foreign matter detects as spring material 202.
(variation 3)
Figure 14 is the figure of example that the checkout gear of optical pickocff has been used in expression.In addition, for other the formation beyond the checkout gear, since identical with above-mentioned embodiment, so mark identical label, omit explanation.
As shown in figure 14, checkout gear 300 has: pedestal 301, and it is fixed on the brace table 14; As the framework 302 of contact component, it can freedom be arranged on the pedestal 301 up or down, surrounds the zone that hammering portion 12 moves up and down, and the lower surface is configured in the lower end of hammering portion 12 and compares on the position that is positioned at the below; As the spring 303 of pretension parts, it is compared this framework 302 pretension downwards on the position that is positioned at the below so that the lower surface of framework 302 is configured in the lower end of hammering portion 12; And as the optical pickocff 304 of detection part, it detects the pretightning force of framework 302 antagonistic springs 303 and relatively moving with respect to pedestal 301.
What is called is surrounded the zone that hammering portion 12 moves up and down, and is meant the shape of framework 302 in concrete example, is to observe the shape of surrounding hammering portion 12 at least a portion on every side from above-below direction.This shape can be considered quadrangle, ellipse, circle or the different shapes such as shape that their part is cut.
Method is fixed on the brace table 14 pedestal 301 by screw is fastening etc.Certainly, pedestal 301 and brace table 14 are formed.Pedestal 301 is fixed on the rear side of the hammering portion 12 on the brace table 14.
By such formation, brace table 14 is descended, make under the situation that hammering portion 12 and framework 302 descend, if there is foreign matter on the cloth, then compare with hammering portion 12 framework 302 at first with the foreign matter butt.Continue to descend owing to framework 302 and foreign matter butt hinder it, but brace table 14 to drop to the position that makes hammering portion 12 and cutting knife 11 butts, so hammering portion 12 continues to descend.Thus, the pretightning force of framework 302 antagonistic springs 303 relatively moves upward with respect to pedestal 301.Its result detects the existence of light shielding part 305 by optical pickocff 304, thereby can detect the existence of foreign matter below hammering portion 12.
(variation 4)
Figure 15 is the figure of example that the checkout gear of laser displacement instrument has been used in expression.In addition, for other the formation beyond the checkout gear, since identical with above-mentioned embodiment, so mark identical label, omit explanation.
As shown in figure 15, checkout gear 400 has: pedestal 401, and it is fixed on the brace table 14; As the framework 402 of contact component, it can freedom be arranged on the pedestal 401 up or down, forms to surround the zone that hammering portion 12 moves up and down, and the lower surface is configured in the lower end of hammering portion 12 and compares on the position that is positioned at the below; As the spring 403 of pretension parts, it is compared this framework 402 pretension downwards on the position that is positioned at the below so that the lower surface of framework 402 is configured in the lower end of hammering portion 12; And as the laser displacement instrument 404 of detection part, it detects the pretightning force of framework 402 antagonistic springs 403 and relatively moving with respect to pedestal 401.
What is called is surrounded the zone that hammering portion 12 moves up and down, and is meant the shape of framework 402 in concrete example, is to observe the shape of surrounding hammering portion 12 at least a portion on every side from above-below direction.The different shapes such as shape that this shape may be thought of as quadrangle, ellipse, circle or their part is cut.
Method is fixed on the brace table 14 pedestal 401 by screw is fastening etc.Certainly, pedestal 401 and brace table 14 are formed.Pedestal 401 is fixed on the rear side of the hammering portion 12 on the brace table 14.
Here, if because mobile axis body 402b and reflecting surface 402c also move, and then image space also changes, so, can obtain displacement as the axis body 402b of object by detecting this image space.
By such formation, brace table 14 is descended, make under the situation that hammering portion 12 and framework 402 descend, if there is foreign matter on the cloth, then compare with hammering portion 12 framework 402 at first with the foreign matter butt.Hinder it by framework 402 and foreign matter butt and continue to descend, but brace table 14 to drop to the position of hammering portion 12 and cutting knife 11 butts, so hammering portion 12 continues to descend.Thus, the pretightning force of framework 402 antagonistic springs 403 and relatively moving upward with respect to pedestal 301.Its result can detect the variation of the image space of being obtained by laser displacement instrument 404,, by detecting the variation of the distance from laser displacement instrument 404 to reflecting surface 402c, can detect the existence of the foreign matter of hammering portion 12 belows that is.
(variation 5)
Figure 16 is the figure of example that the checkout gear of proximity transducer has been used in expression.In addition, for other the formation beyond the checkout gear, since identical with above-mentioned embodiment, so mark identical label, omit explanation.
As shown in figure 16, checkout gear 500 has: pedestal 501, and it is fixed on the brace table 14; As the framework 502 of contact component, it can freedom be arranged on the pedestal 501 up or down, forms to surround the zone that hammering portion 12 moves up and down, and the lower surface is configured in the lower end of hammering portion 12 and compares on the position that is positioned at the below; As the spring 503 of pretension parts, it is compared this framework 502 pretension downwards on the position that is positioned at the below so that the lower surface of framework 502 is configured in the lower end of hammering portion 12; And as the proximity transducer 504 of detection part, it detects the pretightning force of framework 502 antagonistic springs 503 and relatively moving with respect to pedestal 401.
What is called is surrounded the zone that hammering portion 12 moves up and down, and is meant the shape of framework 502 in concrete example, is to observe the shape of surrounding hammering portion 12 at least a portion on every side from above-below direction.The different shapes such as shape that this shape may be thought of as quadrangle, ellipse, circle or their part is cut.
Method is fixed on the brace table 14 pedestal 501 by screw is fastening etc.Certainly, pedestal 501 and brace table 14 are formed.Pedestal 501 is fixed on the rear side of the hammering portion 12 on the brace table 14.
Installing plate 505 forms slotted hole 505a on above-below direction, be fixed on the arm 3 by penetrate screw 506 in this slotted hole 505a.That is, installing plate 505 is slided on above-below direction, can change the position of test section 504a by unclamping screw 506.
By such formation, make in that brace table 14 is descended under the situation that hammering portion 12 and framework 502 descend, if there is foreign matter on the cloth, then compare with hammering portion 12 framework 502 at first with the foreign matter butt.Hinder it by framework 502 and foreign matter butt and continue to descend, but brace table 14 to drop to the position that makes hammering portion 12 and cutting knife 11 butts, so hammering portion 12 continues to descend.Thus, the pretightning force of framework 502 antagonistic springs 503 and relatively moving upward with respect to pedestal 501.Its result utilizes the testing result of proximity transducer 504,, detects the impedance variations of magnetic test coil that is, can detect the foreign matter that exists below hammering portion 12.
(other)
In addition, the invention is not restricted to above-mentioned embodiment.For example also can be following structure, that is, camera is set on brace table,, detect the foreign matter on the cloth by comparing with the image of under the state of mounting cloth only, taking in advance.
In addition, also can detect on cloth, whether there is the temperature dissimilarity, under situation about detecting, judge the finger of its behaviour and make and cut the cloth action and stop more than or equal to the temperature of predefined benchmark by thermometer or infrared ray etc.
In addition, at framework and foreign matter butt and make under the situation that the driving of cutting the cloth motor stops, can inform to the user by lighting a lamp of warning tones or emergency warning lamp, at this moment, the position that will stop to be stored in the control device, after foreign matter is removed, start once more and cut under the situation of cloth, can begin action from this position.
In addition, also can replace above-mentioned detection part, other detection part of use limit switch etc.
Claims (3)
1. the detection device for foreign matter of a buttonholing machine, this buttonholing machine has:
Cutting knife, it is arranged in the sewing machine base portion, forms cutoff edge in the upper end;
The feeding platform, it is arranged in the sewing machine base portion, at upper surface mounting sewn object;
Hammering portion, it is arranged on the sewing machine arm, and dispose relative with described cutting knife sandwiches sewn object and cuts off sewn object between itself and described cutting knife;
Brace table, it supports described hammering portion;
Actuating mechanism, itself and described brace table link, make described hammering portion to described cutting knife approaching/leave;
Drive unit, itself and described actuating mechanism link, and make this actuating mechanism action; And
Control module, it controls the driving of described drive unit,
This buttonholing machine, comprise left and right sides in formation on the sewn object and make portion before interior Buttonhole stitching or after forming, utilize described control module that described drive unit is driven, described hammering portion is moved to described cutting knife, make formation button hole between the portion at the left and right sides of sewn object
It is characterized in that this detection device for foreign matter has:
Detecting unit, it is arranged on the described brace table, moves up and down with described hammering portion, surrounds the zone that described hammering portion moves up and down, be configured in described hammering portion and compare on the position that is positioned at the below, detect the down position that contacts with the object that is positioned at lower position; And
Memory cell, its storage can be assert the limiting value that does not have the slippage that the described hammering of foreign matter portion begins from primary position on sewn object,
Described control module,
Detect under the situation of slippage that described hammering of the moment portion of object begins from primary position at described detecting unit, the driving of described drive unit continued more than or equal to described limiting value,
Detect under the situation of slippage that described hammering of the moment portion of object begins from primary position at described detecting unit, the driving of described drive unit is stopped less than described limiting value.
2. the detection device for foreign matter of buttonholing machine as claimed in claim 1 is characterized in that,
Described detecting unit has:
Pedestal, it is fixed on the described brace table;
Contact component, it can freedom be arranged on the described pedestal up or down, forms to surround the zone that described hammering portion moves up and down, and the lower surface is configured in the lower end of described hammering portion and compares on the position that is positioned at the below;
The pretension parts, it is this contact component pretension downwards, compares on the position that is positioned at the below so that the lower surface of described contact component is configured in the lower end of described hammering portion; And detection part, it detects described contact component and resists the pretightning force of described pretension parts and relatively moving with respect to described pedestal.
3. the detection device for foreign matter of the buttonholing machine described in claim 1 or 2 is characterized in that,
Have setup unit, it sets described limiting value.
Applications Claiming Priority (6)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2008221942 | 2008-08-29 | ||
| JP2008221942 | 2008-08-29 | ||
| JP2008-221942 | 2008-08-29 | ||
| JP2009-189940 | 2009-08-19 | ||
| JP2009189940A JP5329340B2 (en) | 2008-08-29 | 2009-08-19 | Foreign matter detection device for hole sewing machine |
| JP2009189940 | 2009-08-19 |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN101660248A true CN101660248A (en) | 2010-03-03 |
| CN101660248B CN101660248B (en) | 2013-05-08 |
Family
ID=41788492
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 200910171422 Expired - Fee Related CN101660248B (en) | 2008-08-29 | 2009-08-28 | Extraneous matter detecting device of button hole serging machine |
Country Status (2)
| Country | Link |
|---|---|
| JP (1) | JP5329340B2 (en) |
| CN (1) | CN101660248B (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114606668A (en) * | 2022-04-02 | 2022-06-10 | 浙江越隆缝制设备有限公司 | Presser foot control method and embroidery machine applying same |
Family Cites Families (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS6056515B2 (en) * | 1982-01-14 | 1985-12-10 | リツカ−株式会社 | sewing machine safety device |
| JPH0433838Y2 (en) * | 1986-09-24 | 1992-08-12 | ||
| US5361713A (en) * | 1992-02-05 | 1994-11-08 | Brother Kogyo Kabushiki Kaisha | Work sheet cutting blade with continuous blade displacement detection |
| JP2001232082A (en) * | 1999-12-14 | 2001-08-28 | Juki Corp | Buttonholing sewing machine |
| JP2002306878A (en) * | 2001-04-16 | 2002-10-22 | Brother Ind Ltd | Sewing machine and cloth pressing device for sewing machine |
| JP2006087808A (en) * | 2004-09-27 | 2006-04-06 | Brother Ind Ltd | Eyelet holing sewing machine |
| JP4892891B2 (en) * | 2005-08-29 | 2012-03-07 | ブラザー工業株式会社 | Eyelet sewing machine cloth cutting device |
| CN1924145B (en) * | 2005-08-29 | 2011-02-16 | 兄弟工业株式会社 | Cloth-cutting device for round-head keyhole sartorius |
| JP4915118B2 (en) * | 2006-03-28 | 2012-04-11 | ブラザー工業株式会社 | sewing machine |
-
2009
- 2009-08-19 JP JP2009189940A patent/JP5329340B2/en not_active Expired - Fee Related
- 2009-08-28 CN CN 200910171422 patent/CN101660248B/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114606668A (en) * | 2022-04-02 | 2022-06-10 | 浙江越隆缝制设备有限公司 | Presser foot control method and embroidery machine applying same |
Also Published As
| Publication number | Publication date |
|---|---|
| JP5329340B2 (en) | 2013-10-30 |
| CN101660248B (en) | 2013-05-08 |
| JP2010075680A (en) | 2010-04-08 |
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