Efficient high-speed sequin machine
Technical field
The present invention relates to sequin machine technology field, be specially sequin machine driving regulating mechanism.
Background technology
Sequin machine is the attachment device of computerized emboridering machine, can be located at the left and right sides of machine head of embroidery machine, and sequin machine is for make sequin on the article such as clothes, ornament, curtain, shoes and hats.The sequin machine of manufacturing both at home and abroad is at present when making the sequin of different size, need to change the position that paillette guide rail and debugging sequin machine front fulcrum driving lever stopper reset front fulcrum, and adjust sequin driving lever starting point 0 and spend angle, but debug needed overlong time, and must be that technician debugs.With 20 heads, be as the criterion, a general technician needs 1 hour but also needs examination seam, and two technicians of some sequin machine need 2 hours.While being replaced by 6mm sequin from 3mm sequin, first sequin specification being set on the computer of embroidery machine and making front fulcrum stroke become 6mm from 3mm, the paillette guide rail that then utilizes 4 screw adjustment to change, and reorientate; Utilize 2 screws to adjust sequin cutter location; Utilize 3 to 5 screws to adjust He Zhen position, sequin center; Adjust 0 degree angle of sequin driving lever, motor shaft 0 degree angle initializes; Adjust behind 0 degree angle of sequin driving lever, confirm whether each head supplies with sequin; Then examination seam again 6 stages such as adjustment.The part of debugging is many, locates inaccurately, and displacement phenomenon can occur some part in debug process, so need to repeatedly debug, owing to repeatedly adjusting, so stripped thread phenomenon often appears in part, increased labour intensity, reduce operating efficiency, lost time and human resources, increased cost.All there is the defects such as scratch in various degree, front fulcrum impression in the sequin machine of manufacturing at present both at home and abroad, cause product defective when making sub-light sequin.Particularly 3mm sequin and 4mm sequin, because diameter is little, need the precision of adjustment higher, and debug time also needs more longer, causes factory to be unwilling to accept small lot order.
Summary of the invention
For the above-mentioned problems in the prior art, the present invention design provides a kind of debugs simply, the technical scheme of Sequin driving regulating mechanism fast, while changing different sequin specification, only need to rotate the knob being located on bed plate, on knob, be carved with the numeral corresponding with sequin specification, then directly just can change sequin.Sequin cutter location is to utilize 2 butterfly screws to adjust, Yu Zhen position, sequin center is to utilize 1 butterfly screws to adjust, without any need for instrument, do not need technician to debug yet, after carrying out simple training, embroidery work oneself just can be changed sequin, its guiding, accurate positioning, it is simple, convenient to use, operating efficiency and product percent of pass have effectively been improved, reduced cost, scratch and front fulcrum impression occur while processing sub-mating plate hardly, and embroidery machine rotating speed can reach 1200 and turns while producing 3mm sequin.
The technical solution adopted for the present invention to solve the technical problems is: motor is fixed on motor base, sequin frame and motor base are to be connected and fixed by 2 butterfly screws, in sequin frame, rear end is provided with annular knurl set screw, guide-track groove, sequin frame centre position is provided with motor drive shaft slotted eye, driving lever stopper slotted eye, and spring fixed screw slotted eye, the slotted eye of butterfly screws, the rear end of motor drive shaft slotted eye is provided with deck, the lower front end of sequin frame is provided with spring base, spring base is provided with spring shaft, sequin cutter return spring is fixed on spring base through spring shaft, the lower end of sequin frame is provided with bed plate, motor base is can shift position before and after on the step surface being provided with at the sequin frame back side, when needs are adjusted sequin cutter location, first unclamp 2 butterfly screws, by being stuck in after the positioning screw front and back desired location on deck, utilize butterfly screws fixing.Driving lever upper end is connected with motor drive shaft, and by driving lever return spring and motor base resilient engagement, the lower end of driving lever coordinates by connecting axle and front fulcrum are moving, connecting axle is provided with front fulcrum stage clip, one end of front fulcrum stage clip hangs on front fulcrum, the other end is fixed on driving lever, and front fulcrum can adopt the polymer ceramic material of lightweight durable wear to reduce or eliminate sequin scratch.Motor base lower end is provided with driving lever stopper, the centre position of driving lever stopper is provided with abut, abut is to contact to coordinate with driving lever, the starting point 0 degree angle of driving lever is fixed, after setting once while dispatching from the factory without adjusting again, the front end above-below direction of driving lever stopper is provided with chute, the rear end of chute is provided with spring base hole, in spring base hole, be provided with compression spring, the centre position of positioning piece is provided with slotted eye, front lower end is provided with positioning point, the back side of positioning point is provided with spring pressure surface and feather key, the chute of positioning piece and driving lever stopper is to be slidably matched, and utilize the high screw of annular knurl to fix, when needing the upper-lower position fine setting of front fulcrum, first unclamp the high screw of annular knurl, after transfering to a sequin, tighten the high screw of annular knurl, front fulcrum is to contact cooperation with positioning point.Undercarriage is that the screw hole being provided with by upper end is fixed on rising and falling on guide rail with upper and lower oblique angle, the guide rail that rises and falls is fixed on again machine head of embroidery machine side, whole sequin machine is that above lower oblique angle rises and falls, the lower end of undercarriage is provided with guide rail, the rear end of guide rail is provided with U-shaped draw-in groove, undercarriage lower end is provided with screw slotted eye, when the guide-track groove of sequin frame snaps on the guide rail of undercarriage, annular knurl set screw also snaps in the U-shaped draw-in groove that guide rail rear end is provided with and by butterfly screws, tightens fixing, when adjusting He Zhen position, sequin hole, first unclamp by needs butterfly screws, after utilizing annular knurl set screw to locate, tighten butterfly screws fixing.Bed plate be provided with foremost shear bar, the position corresponding with front fulcrum is provided with front fulcrum open slot, the upper right side of front fulcrum open slot is provided with front right projection, the rear end of front right projection is provided with inclined-plane, after front right projection, be provided with rear right projection, the inclined-plane that rear right projection front end is provided with is parallel with the inclined-plane that the rear end of front right projection is provided with, at the left front end of front fulcrum open slot, be provided with front left projection, the rear end of front left projection is provided with inclined-plane, after front left projection, be provided with rear left projection, it is parallel that the inclined-plane that rear left projection front end is provided with is provided with inclined-plane with the rear end of front left projection, the height of rear left projection and rear right projection is the height lower than front left projection and front right projection, the both sides of front fulcrum open slot rear end symmetry are provided with square groove, the front end of right square groove is provided with cam rotation axis, cam rotation axis upper end is provided with draw-in groove, the right side of right square groove is provided with plane step, plane step is provided with block key, the left side of left square groove is provided with plane step, the rear end of plane step is provided with screwed hole, the bed plate front end leftmost side is provided with sequin cutter shaft hole.Front fulcrum open slot right side is provided with right guide piece, the front end inclined-plane of right guide piece is corresponding with the inclined-plane of front right projection rear end, the centre position above of right guide piece is provided with horizontal featherway, the front end of featherway is provided with spring hole clipping, the bottom, rear end of right guide piece is provided with opening groove, the height of opening groove is corresponding with the height of rear right projection, the front end inclined-plane of opening groove is parallel with the front end inclined-plane of right guide piece, and forming surface rail, to snap between front right projection and the inclined-plane of rear right projection be to be slidably matched, the below, left side of right guide piece is provided with step surface.Front fulcrum open slot left side is provided with left rail sheet, the front end inclined-plane of left rail sheet is corresponding with the inclined-plane of front left projection rear end, the centre position above of left rail sheet is provided with horizontal featherway, the front end of featherway is provided with spring hole clipping, the bottom, rear end of left rail sheet is provided with opening groove, the height of opening groove is corresponding with the height of rear left projection, the front end inclined-plane of opening groove is parallel with the front end inclined-plane of left rail sheet, and forming surface rail, to snap between front left projection and the inclined-plane of rear left projection be to be slidably matched, the below, right side of left rail sheet is provided with step surface.Sequin is that below, right side that the left side below from right guide piece is provided with step surface and left rail sheet is provided with between step surface and passes.The front end of slide plate is provided with U-shaped open slot, the both sides of U-shaped open slot are to the next feather key that is provided with, the centre of slide plate is provided with cam path on the right side, the lower end of cam knob is cam, above cam knob, be carved with the numeral corresponding with sequin specification, the position corresponding with numeral, the side of cam knob is provided with cam orientation groove, cam and cam path are to be slidably matched, the rear end of slide plate is provided with inclined-plane, on inclined-plane, be fixed with spring pressuring plate, the both sides on inclined-plane are provided with protruding key, shift fork snap in leading hook place after protruding key be positioned at spring pressuring plate below, to press backward the upper end of shift fork while changing sequin, make the crotch place of shift fork lift spring pressuring plate, the lower-left side of slide plate is provided with slotted eye, after the feather key of both sides, nose snaps in the featherway of left rail sheet and right guide piece, in cam path, put into cam knob and clamp with jump ring, positioning ejection spring abutment and retainer spring are fixed on bed plate through the slotted eye of slide plate lower-left side, finally tension force jump ring is snapped in the spring hole clipping of left rail sheet and right guide piece, the inclined-plane being provided with due to left rail sheet and right guide piece front end when rotating cam knob moves forward slide plate diminishes left rail sheet and right guide piece distance, the inclined-plane being provided with due to rear left projection and rear right projection front end when slide plate moves backward makes the distance of left rail sheet and right guide piece become large, so the side of cam knob is to have jump ring card jail, location not change in the environment bottom left guide piece of vibrations and the distance of right guide piece, withdraw from location jump ring, between the jump ring of cam knob and cam rotation axis, pack elastomeric pad into and can realize stepless displacement.The left front end of bed plate is provided with sequin cutter shaft hole, and after sequin cutter shaft packs sequin cutter shaft hole into through sequin cutter, profit is screwed, and the primary screw of sequin knife back face snaps in the crotch place of sequin cutter return spring, and sequin cutter and bed plate are to be slidably matched.
The invention has the beneficial effects as follows, with 20 heads, be as the criterion, a general technician needs 1 hour but also needs examination seam, two technicians of some sequin machine need the present invention in 2 hours also not need technician to debug without any need for instrument, after carrying out simple training, embroidery work oneself just can be changed sequin, a head just can be changed sequin less than 1 minute, efficiency is current more than 10 times, its guiding, accurate positioning, it is simple, convenient to use, effectively improve operating efficiency and product percent of pass, reduced cost.So front fulcrum of the present invention has adopted polymer ceramic material durable in use, while processing sub-mating plate, there is hardly scratch and front fulcrum impression.
Accompanying drawing explanation
Fig. 1 is structural representation of the present invention.Fig. 2 is bed plate plan structure schematic diagram.Fig. 3 is the right TV structure schematic diagram of Fig. 1.Fig. 4 is landing gear structure schematic diagram.Fig. 5 is the right view of Fig. 4.Fig. 6 is sequin rack construction schematic diagram.Fig. 7 is the right view of Fig. 6.Fig. 8 is motor base and motor configuration schematic diagram.Fig. 9 is motor base A-A face structural representation and motor side structural representation.Figure 10 is driving lever stopper structural representation.Figure 11 is the plan structure schematic diagram of Figure 10.Figure 12 is the left view of Figure 10.Figure 13 is positioning block structure schematic diagram.Figure 14 is the left TV structure schematic diagram of Figure 13.Figure 15 is the plan structure schematic diagram of Figure 13.Figure 16 is the high screw structural schematic diagram of annular knurl.Figure 17 is driving lever and front fulcrum modular construction schematic diagram.Figure 18 is the right TV structure schematic diagram of Figure 17.Figure 19 is the right TV structure schematic diagram of Figure 20.Figure 20 is bed plate structural representation.Figure 21 is the left TV structure schematic diagram of Figure 20.Figure 22 is the structural representation of looking up of Figure 20.Figure 23 is cam knob structure schematic diagram.Figure 24 is the right view of Figure 23.Figure 25 is the right TV structure schematic diagram of Figure 26.Figure 26 is the structural representation of right guide piece.Figure 27 is the left TV structure schematic diagram of Figure 26.Figure 28 is the structural representation of looking up of Figure 26.Figure 29 is the right TV structure schematic diagram of Figure 30.Figure 30 is the structural representation of left rail sheet.Figure 31 is the left TV structure schematic diagram of Figure 30.Figure 32 is that Figure 30 looks up structural representation.Figure 33 is spring base and sequin cutter return spring modular construction schematic diagram.Figure 34 is the right TV structure schematic diagram of Figure 33.Figure 35 is locator card spring abutment structural representation.Figure 36 is the structural representation of looking up of Figure 35.Figure 37 is skateboard schematic diagram.Figure 38 is the right TV structure schematic diagram of Figure 37.Figure 39 is sequin cutter shaft structure schematic diagram.Figure 40 is the right TV structure schematic diagram of Figure 39.Figure 41 is tension force clip spring structure schematic diagram.Figure 42 is the right view of Figure 41.Figure 43 is locator card spring structure schematic diagram.Figure 44 is butterfly screws structural representation.Figure 45 is annular knurl set screw structural representation.Figure 46 is connecting axle structure schematic diagram.Figure 47 is shift fork silk structural representation.Figure 48 is the right TV structure schematic diagram of Figure 47.Figure 49 is compression spring structural representation.
In figure: 1. undercarriage, 1a. annular knurl set screw, 1b. guide rail, 1c. butterfly screws, 1d. screw slotted eye, 2. sequin frame, 2a. annular knurl set screw, 2b. deck, 2c. butterfly screws, 2d. butterfly screws, 2e. spring fixed screw, 2f. guide-track groove, 2g. screw hole, 2h. screw slotted eye, 2i. screw slotted eye, 2j. motor drive shaft slotted eye, 2k. screw slotted eye, 2L. driving lever stopper slotted eye, 2m. screw hole, 2p. step surface, 3. motor drive shaft, 3a. driving lever stopper, the 3b. piece of transposing, the high screw of 3c. annular knurl, 3d. motor base, 3e. motor, 3f. abut, 3g. screwed hole, 3h. spring base hole, 3i. chute, the 3j. point of transposing, 3k. spring pressure surface, 3m. compression spring, 3n. feather key, 4. driving lever, 4a. driving lever return spring, 4b. connecting axle, 4c. front fulcrum, 4d. front fulcrum stage clip, 4e. open slot, 5. bed plate, 5a. cam knob, 5b. cam rotation axis, 5c. sequin cutter shaft, 5e. left rail sheet, the right guide piece of 5h., 5i. tension force jump ring, 5k. retainer spring, 5L. positioning ejection spring abutment, 5n. shear bar, 5o. front fulcrum open slot, 5j. front left projection, 5p. front right projection, 5q. rear right projection, 5w. rear left projection, 5r. sequin cutter shaft hole, 5s. screwed hole, 5v. cam, 5x. block key, 5y. square groove, 5z. cam orientation groove, 6. chute, 6a. spring hole clipping, 6b. inclined-plane, 6c. step surface, 6d. chute, 6e. spring hole clipping, 6f. inclined-plane, 6g. step, 7. spring base, 7a. sequin cutter return spring, 7b. spring shaft, 8. sequin cutter, 9. slide plate, 9a. cam path, 9b. shift fork, the protruding key of 9c., 9d. slotted eye, 9e. inclined-plane, 9f. spring pressuring plate, 9g.U shape open slot, 9h. feather key.
The specific embodiment
Below in conjunction with accompanying drawing, the present invention will be described in detail.
In Fig. 3, motor 3e is fixed on motor base 3d, sequin frame 2 is connected and fixed by butterfly screws 2c and butterfly screws 2d with motor base 3d, in Fig. 6, in sequin frame 2, rear end is provided with annular knurl set screw 1a, guide-track groove 2f, sequin frame 2 centre positions are provided with motor drive shaft slotted eye 2j, driving lever stopper slotted eye 2L, and spring fixed screw slotted eye 2h, screw slotted eye 2i, the rear end of motor drive shaft slotted eye 2j is provided with deck 2b, the lower front end of sequin frame 2 is provided with spring base 7, spring base 7 is provided with spring shaft 7b, sequin cutter return spring 7a is fixed on spring base 7 through spring shaft 7b, the lower end of sequin frame 2 is provided with bed plate 5, in Fig. 7, motor base 3d is can shift position before and after on the step surface 2p being provided with at sequin frame 2 back sides, when needs are adjusted sequin cutter location, in Fig. 1, first unclamp butterfly screws 2c and butterfly screws 2d, by being stuck in after the annular knurl set screw 2a front and back desired location on deck 2b, utilize butterfly screws 2c and butterfly screws 2d fixing.Driving lever 4 upper ends are connected with motor drive shaft 3, and by driving lever return spring 4a and motor base 3d resilient engagement, the lower end of driving lever 4 coordinates by connecting axle 4b and front fulcrum 4c are moving, connecting axle 4b is provided with front fulcrum stage clip 4d, it is upper that one end of front fulcrum stage clip 4d hangs over front fulcrum 4c, and the other end is fixed on driving lever 4.Motor base 3d lower end is provided with driving lever stopper 3a, the centre position of driving lever stopper 3a is provided with abut 3f, abut 3f is to contact to coordinate with driving lever 4, the starting point 0 degree angle of driving lever 4 is fixed, after setting once while dispatching from the factory without adjusting again, in Figure 10, the front end above-below direction of driving lever stopper 3a is provided with chute 3i, the rear end of chute 3i is provided with spring base hole 3h, in spring base hole 3h, be provided with compression spring 3m, in Figure 13, the centre position of positioning piece 3b is provided with slotted eye, front lower end is provided with positioning point 3j, in Figure 14, the back side of positioning point 3j is provided with spring pressure surface 3k and feather key 3n, the chute 3i of positioning piece 3b and driving lever stopper 3a is slidably matched, in Fig. 3, and utilize the high screw 3c of annular knurl to fix, in Fig. 1, when needing the upper-lower position fine setting of front fulcrum 4c, first unclamp the high screw 3c of annular knurl, after transfering to a sequin, tighten the high screw 3c of annular knurl, front fulcrum 4c contacts cooperation with positioning point 3j.Undercarriage 1 is that the screw hole being provided with by upper end is fixed on rising and falling on guide rail with upper and lower oblique angle, the guide rail that rises and falls is fixed on again machine head of embroidery machine side, whole sequin machine is that above lower oblique angle rises and falls, in Fig. 5, the lower end of undercarriage 1 is provided with guide rail 1b, the rear end of guide rail 1b is provided with U-shaped draw-in groove, undercarriage 1 lower end is provided with screw slotted eye 1d, in Fig. 7, the guide-track groove 2f of sequin frame 2 snap in the guide rail 1b of undercarriage 1 when upper annular knurl set screw 1a also snap in the U-shaped draw-in groove that guide rail 1b rear end is provided with and tighten fixing by the butterfly screws 1c in Fig. 1, when adjusting He Zhen position, sequin hole, first unclamp by needs butterfly screws 1c, after utilizing annular knurl set screw 1a to locate, tighten butterfly screws 1c fixing.In Figure 20, bed plate 5 be provided with foremost shear bar 5n, the position corresponding with front fulcrum 4c is provided with front fulcrum open slot 5o, the upper right side of front fulcrum open slot 5o is provided with front right projection 5p, the rear end of front right projection 5p is provided with inclined-plane, after front right projection, be provided with rear right projection 5q, the inclined-plane that rear right projection 5q front end is provided with is parallel with the inclined-plane that the rear end of front right projection 5p is provided with, at the left front end of front fulcrum open slot 5o, be provided with front left projection 5j, the rear end of front left projection 5j is provided with inclined-plane, after front left projection 5j, be provided with rear left projection 5w, it is parallel that the inclined-plane that rear left projection 5w front end is provided with is provided with inclined-plane with the rear end of front left projection 5j, the height of rear left projection 5w and rear right projection 5q is the height lower than front left projection 5j and front right projection 5p, the both sides of front fulcrum open slot 5o rear end symmetry are provided with square groove 5y, the front end of right square groove 5y is provided with cam rotation axis 5b, cam rotation axis 5b upper end is provided with draw-in groove, the right side of right square groove 5y is provided with plane step, plane step is provided with block key 5x, the left side of left square groove 5y is provided with plane step, the rear end of plane step is provided with screwed hole 5s, the bed plate 5 front end leftmost sides are provided with sequin cutter shaft hole 5r.Front fulcrum open slot 5o right side is provided with the right guide piece 5h in Figure 26, the front end inclined-plane of right guide piece 5h is corresponding with the inclined-plane of front right projection 5p rear end, the centre position above of right guide piece 5h is provided with horizontal featherway 6, the front end of featherway 6 is provided with spring hole clipping 6a, the bottom, rear end of right guide piece 5h is provided with opening groove, the height of opening groove is corresponding with the height of rear right projection 5q, the front end inclined-plane 6b of opening groove is parallel with the front end inclined-plane of right guide piece 5h, and forming surface rail, to snap between front right projection 5p and the inclined-plane of rear stone projection 5q be to be slidably matched, in Figure 28, the below, left side of right guide piece 5h is provided with step surface 6c.Front fulcrum open slot 5o left side is provided with the left rail sheet 5e in Figure 30, the front end inclined-plane of left rail sheet 5e is corresponding with the inclined-plane of front left projection 5j rear end, the centre position above of left rail sheet 5e is provided with horizontal featherway 6d, the front end of featherway 6d is provided with spring hole clipping 6e, the bottom, rear end of left rail sheet 5e is provided with opening groove, the height of opening groove is corresponding with the height of rear left projection 5w, the front end inclined-plane 6f of opening groove is parallel with the front end inclined-plane of left rail sheet 5e, and forming surface rail, to snap between front left projection 5j and the inclined-plane of rear left projection 5w be to be slidably matched, in Figure 32, the below, right side of left rail sheet 5e is provided with step surface 6g.Sequin is that below, right side that the left side below from right guide piece 5h is provided with step surface 6c and left rail sheet 5e is provided with between step surface 6g and passes.In Figure 37, the front end of slide plate 9 is provided with U-shaped open slot 9g, the both sides of U-shaped open slot 9g are to the next feather key 9h that is provided with, the centre of slide plate 9 is provided with cam path 9a on the right side, in Figure 23, the lower end of cam knob 5a is cam 5v, above cam knob 5a, be carved with the numeral corresponding with sequin specification, the position corresponding with numeral, the side of cam knob 5a is provided with cam orientation groove 5z, cam 5v and cam path 9a are slidably matched, in Figure 37, the rear end of slide plate 9 is provided with inclined-plane 9e, on inclined-plane 9e, be fixed with spring pressuring plate 9f, the both sides of inclined-plane 9e are provided with protruding key 9c, shift fork 9b snap in leading hook place after protruding key 9c be positioned at spring pressuring plate 9f below, to press backward the upper end of shift fork 9b while changing sequin, make the crotch place of shift fork lift spring pressuring plate 9f, the lower-left side of slide plate 9 is provided with slotted eye 9d, the feather key 9h of slide plate 9 front end both sides snap in the featherway 6d of left rail sheet 5e in Fig. 2 and right guide piece 5h and featherway 6 interior after, in cam path 9a, put into cam knob 5a and clamp with jump ring, positioning ejection spring abutment 5L and retainer spring 5k are fixed on bed plate 5 through the slotted eye 9d of slide plate 9 lower-left sides, finally tension force jump ring 5i is snapped in the spring hole clipping 6e and spring hole clipping 6a of left rail sheet 5e and right guide piece 5h, the inclined-plane being provided with due to left rail sheet 5e and right guide piece 5h front end when rotating cam knob 5a moves forward slide plate 9 diminishes left rail sheet 5e and right guide piece 5h distance, the inclined-plane being provided with due to rear left projection 5w and rear right projection 5q front end when slide plate 9 moves backward makes the distance of left rail sheet 5e and right guide piece 5h become large, so the side of cam knob 5a is provided with jump ring 5k card jail, location and does not change at the environment bottom left guide piece 5e of vibrations and the distance of right guide piece 5h, withdraw from location jump ring 5k, between the jump ring of cam knob 5a and cam rotation axis 5b, pack elastomeric pad into and can realize stepless displacement.In Figure 20, the left front end of bed plate 5 is provided with sequin cutter shaft hole 5r, in Fig. 2, after sequin cutter shaft 5c packs sequin cutter shaft hole 5r into through sequin cutter 8, profit is screwed, in Fig. 3, the primary screw at sequin cutter 8 back sides snaps in the 7c of crotch place of sequin cutter return spring 7a, and sequin cutter 8 is to be slidably matched with bed plate 5.When changing sequin, the present invention only has 4 steps, from 3mm sequin, be replaced by 6mm sequin for row: (1) first arranges sequin specification 6mm at embroidery machine computer, (2) position that rotating cam knob 5a is 6, then change sequin, (3) unclamp butterfly screws 2c and butterfly screws 2d, after utilizing annular knurl set screw 2a to adjust sequin cutter location, tighten butterfly screws 2c and butterfly screws 2d, (4) unclamp butterfly screws 1c, utilize annular knurl set screw 1a to adjust to tighten butterfly screws 1c behind the position of sequin centre bore and pin and can put into production.