CN111452096A - Embroidery scissors and manufacturing method thereof - Google Patents
Embroidery scissors and manufacturing method thereof Download PDFInfo
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- CN111452096A CN111452096A CN202010281377.4A CN202010281377A CN111452096A CN 111452096 A CN111452096 A CN 111452096A CN 202010281377 A CN202010281377 A CN 202010281377A CN 111452096 A CN111452096 A CN 111452096A
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- 238000004519 manufacturing process Methods 0.000 title claims abstract description 23
- 229910000831 Steel Inorganic materials 0.000 claims description 57
- 239000010959 steel Substances 0.000 claims description 57
- 238000000034 method Methods 0.000 claims description 18
- 238000003780 insertion Methods 0.000 claims description 16
- 230000037431 insertion Effects 0.000 claims description 16
- 238000010438 heat treatment Methods 0.000 claims description 15
- 238000004080 punching Methods 0.000 claims description 15
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 9
- 238000003825 pressing Methods 0.000 claims description 6
- 238000010791 quenching Methods 0.000 claims description 6
- 230000000171 quenching effect Effects 0.000 claims description 6
- 238000010008 shearing Methods 0.000 claims description 6
- 230000000149 penetrating effect Effects 0.000 claims description 5
- 238000005452 bending Methods 0.000 claims description 3
- 238000005496 tempering Methods 0.000 claims description 3
- 240000005002 Erythronium dens canis Species 0.000 claims 1
- 238000009826 distribution Methods 0.000 claims 1
- 238000001746 injection moulding Methods 0.000 abstract description 15
- 239000000463 material Substances 0.000 abstract description 5
- 235000021190 leftovers Nutrition 0.000 abstract description 3
- 238000003672 processing method Methods 0.000 abstract description 3
- 239000004744 fabric Substances 0.000 description 3
- 238000012545 processing Methods 0.000 description 3
- 229920000742 Cotton Polymers 0.000 description 2
- 238000005520 cutting process Methods 0.000 description 2
- 238000009434 installation Methods 0.000 description 2
- 238000004806 packaging method and process Methods 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000004891 communication Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 239000002699 waste material Substances 0.000 description 1
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B26—HAND CUTTING TOOLS; CUTTING; SEVERING
- B26B—HAND-HELD CUTTING TOOLS NOT OTHERWISE PROVIDED FOR
- B26B13/00—Hand shears; Scissors
- B26B13/12—Hand shears; Scissors characterised by the shape of the handles
- B26B13/20—Hand shears; Scissors characterised by the shape of the handles with gripping bows in the handle
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23P—METAL-WORKING NOT OTHERWISE PROVIDED FOR; COMBINED OPERATIONS; UNIVERSAL MACHINE TOOLS
- B23P15/00—Making specific metal objects by operations not covered by a single other subclass or a group in this subclass
- B23P15/28—Making specific metal objects by operations not covered by a single other subclass or a group in this subclass cutting tools
- B23P15/40—Making specific metal objects by operations not covered by a single other subclass or a group in this subclass cutting tools shearing tools
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Abstract
The invention relates to an embroidery shears and a manufacturing method thereof. The novel knife comprises two blades, rivets and handles, wherein the positions of the two blades above the rivets are knife edge positions, the positions below the rivets are knife handle positions, and the knife handle position of each blade is provided with a buckle groove; the upper end middle part of every handle is equipped with the blade mounting groove, and the lower extreme periphery that corresponds the handle of a knife position is arranged in to the blade mounting groove cover of handle, and still set firmly elastic buckle in the blade mounting groove of handle, and elastic buckle detains to arrange in the buckle recess that corresponds the blade so that the blade can't deviate from in the blade mounting groove. The blade and the handle are fixed through the elastic buckle, the assembly is convenient, the handle does not need to be subjected to injection molding together with the scissors, the automatic injection molding production of the handles of the scissors is convenient to realize, the processing method of the embroidery scissors has few leftovers, the material utilization rate can reach more than 90%, and the production efficiency is high.
Description
Technical Field
The invention relates to the field of scissors, in particular to an embroidery scissors and a manufacturing method thereof.
Background
Scissors are double-edged tools for cutting sheet-like or thread-like objects such as cloth, paper, ropes, etc. The prior scissors and the production method have the following problems: firstly, blades in the scissors are mostly used as inserts to participate in injection molding processing of handles, injection molding flash is easily generated to influence the quality of products, and automatic injection molding production of the handles of the scissors is not easy to realize; secondly, contacts used for adjusting the forking of the blade tip part in the scissor handle are mostly formed integrally with the handle, and the forking of the scissor tip part can be adjusted only by grinding off allowance, so that the working procedures are increased and the surfaces of the contacts are rough and not attractive; and thirdly, the material utilization rate is low in the production process of the scissors, which can only reach 60 percent generally, and the material waste is easily caused.
Disclosure of Invention
The invention aims to: the cutter blade and the handle in the embroidery shears are fixed through the elastic buckles, the assembly is convenient, the handle does not need to be subjected to injection molding together with the shears, the automatic injection molding production of the handles of the shears is convenient to realize, the leftover bits and pieces of the processing method of the embroidery shears are few, the material utilization rate can reach more than 90%, and the production efficiency is high.
The invention is realized by the following technical scheme:
the first scheme is as follows:
the embroidery scissors comprise two blades which are mutually overlapped and are arranged in a crossed manner at the middle part, rivet holes which vertically penetrate through the overlapped and crossed corresponding parts of the blades are respectively arranged on the two blades, the embroidery scissors further comprise rivets which are connected between the rivet holes of the two blades in a penetrating manner so that the two blades can rotate around the rivets to realize opening and closing of the knife edges, the parts of the two blades above the rivets are knife edge parts used for matching shearing, the parts below the rivets are knife handle parts used for controlling the opening and closing shearing work of the knife edge parts, and the embroidery scissors further comprise two handles which are respectively and fixedly arranged on the lower end parts of the knife handle parts; the method is characterized in that: a buckle groove is arranged in the middle of the inner side edge of the handle part of each blade in the folding direction, and the notch of the buckle groove faces the side of the inner side edge of the other blade;
the upper end middle part of every handle is equipped with top-down extension and with the lower extreme position matched with blade mounting groove that corresponds the handle of a knife position, the blade mounting groove cover of handle is arranged in the lower extreme periphery that corresponds the handle of a knife position, just still set firmly the elasticity buckle in the blade mounting groove of handle, the elasticity buckle is buckled and is arranged in the buckle recess that corresponds the blade so that the blade can't deviate from in the blade mounting groove.
Preferably, each handle is provided with two slots which extend downwards from the end face of the upper end of the handle and are formed by the outer part of the side wall and penetrating inwards into the blade mounting groove on the upper part of the inner side wall of the folding direction of each handle, the two slots are arranged at intervals, each elastic buckle is composed of a long strip-shaped buckle body formed by the side wall of the handle between the two slots and a convex part which is arranged on the upper part of the inner side wall of the buckle body and protrudes into the blade mounting groove, and the shape and the size of the convex part and the position on the side wall are matched with the shape and the size and the position of the buckle groove at the position of the handle of the knife so that the convex part.
In order to reduce the processing procedures of the scissors and ensure the aesthetic property of the surface of the touch block, the corresponding position of the lower part of the inner side wall of each handle facing to the folding direction is provided with an inserting groove and an adjustable touch block arranged in the inserting groove, the inner end of the adjustable touch block is inserted in the inserting groove, the outer end of the adjustable touch block extends out from the inserting groove to the side groove mouth of the other handle and extends and protrudes towards the direction close to the other handle, and the outer ends of the two adjustable touch blocks can touch each other to limit the folding limit position of the knife edge; and an adjusting locking assembly used for adjusting and fixing the inserting position of the adjustable touch block in the inserting groove so as to adjust the mutual touch position of the outer ends of the two adjustable touch blocks is arranged between the inserting groove and the adjustable touch block.
Preferably, the channel of the insertion groove penetrates downwards to the side wall of the bottom of the handle to form a lower notch, and the adjustable touch block is inserted into the insertion groove upwards from the lower notch and forms tight fit connection with the two communicating side notches of the insertion groove and the vertical side channel wall of the lower notch; the adjusting and locking assembly comprises two vertical first tooth-shaped corrugated structures arranged on the side groove wall and second tooth-shaped corrugated structures which are arranged on the matched contact side wall of the adjustable touch block and matched with the first tooth-shaped corrugated structures in a concave-convex mode, and the first tooth-shaped corrugated structures and the second tooth-shaped corrugated structures are formed by sequentially distributing bar-shaped grooves and bar-shaped convex teeth which vertically extend upwards from a plurality of lower notches along the extending direction of the adjustable touch block in a concave-convex mode.
In order to improve the contact stability of the two touch blocks when the scissors are combined, the thickness of the adjustable touch block extending out of the outer end part of the insertion groove is larger than that of the part positioned in the insertion groove.
Scheme II:
a manufacturing method of embroidery scissors is characterized in that: the method comprises the following steps:
① layout, drawing a plurality of blade contour units used for forming blade contours on the upper surface of a steel strip in sequence along the length extension direction of the steel strip, wherein each blade contour unit is in an isosceles triangle shape, the bottom edge of one blade contour unit is overlapped with the edge line of one side wall of the steel strip vertical to the length extension direction of the steel strip, the bottom edge of the other blade contour unit is overlapped with the edge line of the other side wall of the steel strip vertical to the length extension direction of the steel strip, two adjacent blade contour units share one equal waist edge, then drawing a first circular contour used for punching a rivet hole at the corresponding position in the middle of each blade contour unit, drawing a second circular contour used for simultaneously punching and forming buckle grooves of two adjacent blades in the middle of the common equal waist edge of the two adjacent blade contour units, the circle center of the second circular contour is overlapped with the common equal waist edge, and drawing a second circular contour only on the common isosceles edge at the odd number position along the length extension direction of the steel strip;
② blanking, placing the steel belt after the layout in step ① on a punch press, punching rivet holes on the steel belt according to the first circular outline, punching buckle grooves on the steel belt according to the outline of the second circular outline, and punching creases on the steel belt according to the outline of the blade outline unit;
③ heat treatment, namely, the steel strip which is punched and processed in the step ② is sent into a quenching furnace for heat treatment, so that the steel strip meets the use hardness requirement;
④ grinding the inner surface of the steel strip by feeding the steel strip after heat treatment in step ③ into a water mill;
⑤ breaking, namely feeding the steel strip subjected to the line grinding treatment in the step ④ into a breaking machine, and sequentially breaking the creases of each blade contour unit punched on the steel strip in the step ② to enable the steel strip to become a blade primary product;
⑥ grinding the outer opening by feeding the blade primary product processed in step ⑤ into a water mill to grind the outer surface of the blade primary product;
⑦ grinding edge, namely feeding the blade primary product after the outer opening grinding treatment in the step ⑥ into a water mill to grind the edge part so as to form the blade;
⑧ assembling, the blade is installed in the blade installation slot of the handle, the elastic buckle of the blade installation slot is buckled in the buckle groove of the corresponding blade, then the knife edges of the two blades are opposite, and the rivet and the gasket are riveted on the rivet hole between the two blades.
Preferably, the heat treatment comprises heating, quenching and tempering.
Preferably, the following steps are added between the step ⑦ and the step ⑧:
and (4) pressing radian, namely feeding the blades subjected to the edge grinding treatment in the step ⑦ into a radian pressing die one by one, and bending the blade at the edge part above the rivet hole in a radian manner towards one side deviating from the extension direction of the blade plane.
Preferably, during assembly at step ⑧, the adjustable touch block is finally maneuvered into place in the socket groove on the handle.
Preferably, there is also included the step of, during the stock layout of step ①, making the apex angle d of each blade profile unit 90 DEG ≦ d ≦ 170 deg.
Preferably, the following steps are added between the step ⑦ and the step ⑧:
and (4) injection molding, wherein the injection molding machine performs injection molding on the handle.
Preferably, the method finally comprises the following steps:
⑨, checking, performing trial shearing by using standard four-layer cotton cloth, and checking whether the scissors are qualified;
⑩ and packaging with scissors.
Compared with the prior art, the invention has the beneficial effects that:
1. according to the embroidery shears and the manufacturing method thereof, the blades and the handles in the embroidery shears are fixed through the elastic buckles, the assembly is convenient, the handles do not need to be subjected to injection molding together with the shears, the automatic injection molding production of the handles of the shears is convenient to realize, the processing method of the embroidery shears is few in leftovers, the material utilization rate can reach more than 90%, and the production efficiency is high.
2. According to the embroidery shears and the manufacturing method thereof, the adjustable touch block and the inserting groove in the embroidery shears are in close fit and inserting connection, and the relative position between the two adjustable touch blocks can be adjusted, so that the procedures of grinding the contact points can be reduced, and the surfaces of the adjustable touch blocks are more attractive.
3. The invention relates to embroidery scissors and a manufacturing method thereof, wherein the thickness of the outer end part of an adjustable touch block extending out of an insertion groove is larger than that of the part positioned in the insertion groove. The adjustable touch block can be extended out of the outer end part of the inserting groove to be thicker, so that the contact stability of the two touch blocks can be improved and ensured when the scissors are combined.
Drawings
FIG. 1 is a front view of the first embodiment;
FIG. 2 is an exploded view of the first embodiment;
FIG. 3 is an enlarged view of A in FIG. 2;
FIG. 4 is an enlarged view of B in FIG. 2;
FIG. 5 is a left side view of the first embodiment;
FIG. 6 is a cross-sectional view of C-C of FIG. 5;
FIG. 7 is a schematic diagram of the layout in the second embodiment.
Description of reference numerals: 1-blade, 11-blade edge part, 12-handle part, 13-buckle groove, 2-rivet, 3-handle, 31-blade mounting groove, 32-elastic buckle, 321-buckle body, 322-convex part, 33-notch, 34-plug groove, 341-lower notch, 342-first tooth-shaped corrugated structure, 4-adjustable touch block, 41-second tooth-shaped corrugated structure, a-blade contour unit, b-first circular contour and c-second circular contour.
Detailed Description
The invention is described in detail below with reference to the following description of the drawings:
the first embodiment is as follows:
as shown in fig. 1-6, an embroidery shears comprises two blades 1 which are mutually overlapped and are arranged with the middle crossed, rivet holes which vertically penetrate through the overlapped and crossed corresponding positions of the blades 1 are respectively arranged on the two blades 1, the embroidery shears also comprises a rivet 2 which is arranged between the rivet holes of the two blades 1 in a penetrating way so that the two blades 1 can rotate around the rivet 2 to realize opening and closing of the knife edge, the position of the two blades 1 above the rivet 2 is a knife edge part 11 for matching shearing, the position below the rivet 2 is a knife handle part 12 for controlling the opening and closing of the knife edge part 11 to shear, and the embroidery shears also comprises two handles 3 which are respectively and fixedly arranged on the lower end parts of the knife handle parts 12; the method is characterized in that: a buckle groove 13 is arranged in the middle of the inner side edge of the handle part 12 of each blade 1 facing the folding direction, and the notch of the buckle groove 13 faces the side of the inner side edge of the other blade 1;
the upper end middle part of every handle 3 is equipped with the upper-lower extending and with the lower extreme position matched with blade mounting groove 31 that corresponds handle of a knife position 12, the lower extreme periphery that corresponds handle of a knife position 12 is arranged in to the blade mounting groove 31 cover of handle 3, just still set firmly elasticity buckle 32 in the blade mounting groove 31 of handle 3, elasticity buckle 32 is detained and is arranged in the buckle recess 13 that corresponds blade 1 so that blade 1 can't deviate from in blade mounting groove 31.
Preferably, each handle 3 is provided with two slots 33 extending downwards from the end surface of the upper end of the handle 3 and penetrating inwards into the blade mounting groove 31 from the outside of the side wall at the upper part of the inner side wall of the handle in the folding direction, the two slots 33 are arranged at intervals, the elastic buckle 32 is composed of a long-strip-shaped buckle body 321 formed by the side wall of the handle 3 between the two slots 33 and a convex part 322 arranged at the upper part of the inner side wall of the buckle body 321 and protruding into the blade mounting groove 31, and the shape and the size of the convex part 322 and the position on the side wall are matched with the shape and the size and the position of the buckle groove 13 of the handle part 12, so that the convex part 322 can be fixedly buckled in the buckle groove 13 of the blade 1.
In order to reduce the processing procedure and ensure the aesthetic property of the surface of the touch block, the corresponding position of the lower part of the inner side wall of each handle 3 facing the folding direction is provided with an inserting groove 34 and an adjustable touch block 4 arranged in the inserting groove 34, the inner end of the adjustable touch block 4 is inserted in the inserting groove 34, the outer end extends out from the inserting groove 34 to the side notch of the other handle 3 and extends and protrudes towards the direction close to the other handle 3, and the outer ends of the two adjustable touch blocks 4 can touch each other to limit the folding limit position of the knife edge part 11; an adjusting locking component for adjusting and fixing the inserting position of the adjustable touch block 4 in the inserting groove 34 so as to adjust the mutual touch position of the outer ends of the two adjustable touch blocks 4 is arranged between the inserting groove 34 and the adjustable touch block 4.
Preferably, the channel of the insertion groove 34 penetrates downward to the side wall of the bottom of the handle 3 to form a lower notch 341, and the adjustable touch block 4 is inserted into the insertion groove 34 from the lower notch 341 upward and forms a tight fit connection with the two communication side notches of the insertion groove 34 and the vertical side channel wall of the lower notch 341; the adjustment locking assembly comprises two first tooth-shaped corrugated structures 331 arranged on the vertical side groove wall and second tooth-shaped corrugated structures 41 arranged on the matched contact side wall of the adjustable touch block 4 and matched with the first tooth-shaped corrugated structures 331 in a concave-convex mode, wherein the first tooth-shaped corrugated structures 331 and the second tooth-shaped corrugated structures 41 are formed by a plurality of strip-shaped grooves and strip-shaped convex teeth which vertically extend upwards from lower notches along the extending direction of the adjustable touch block 4 in a concave-convex alternating mode.
In order to improve the contact stability of the contact blocks when the scissors are combined, the thickness of the outer end part of the adjustable contact block 4 extending out of the inserting groove 34 is larger than that of the part positioned in the inserting groove 34.
Example two:
as shown in fig. 7, a method for manufacturing a pair of embroidery scissors is characterized in that: the method comprises the following steps:
① layout, drawing a plurality of blade contour units a used for forming the outer contour of the blade 1 on the upper surface of the steel strip in sequence along the length extension direction of the steel strip, wherein each blade contour unit a is in an isosceles triangle shape, the bottom edge of one blade contour unit a is overlapped with the edge line of one side wall of the steel strip vertical to the length extension direction of the steel strip, the bottom edge of the other blade contour unit a is overlapped with the edge line of the other side wall of the steel strip vertical to the length extension direction of the steel strip, two adjacent blade contour units a share one equal waist edge, then drawing a first circular contour b used for punching a rivet hole at the corresponding position in the middle of each blade contour unit a, drawing a second circular contour c used for simultaneously punching and forming the buckle groove 13 of two adjacent blades 1 at the middle of the equal waist edge of two adjacent blade contour units a, the second circular contour c is overlapped with the center of the equal waist edge, and drawing a second circular contour c only on the common isosceles edge at the odd number position along the length extension direction of the steel strip;
②, blanking, namely, placing the steel strip subjected to the layout in the step ① on a punch press, punching rivet holes on the steel strip according to a first circular contour b, punching buckling grooves 13 on the steel strip according to a contour of a second circular contour c, and punching creases on the steel strip according to a contour of a blade contour unit a;
③ heat treatment, namely, the steel strip which is punched and processed in the step ② is sent into a quenching furnace for heat treatment, so that the steel strip meets the use hardness requirement;
④ grinding the inner surface of steel band, that is, the joint surface of two blades, by feeding the steel band after heat treatment in step ③ into a water mill
⑤ breaking, namely feeding the steel strip with the ground steel strip of the step ④ into a breaking machine, and sequentially breaking the creases of the blade profile units a punched on the steel strip in the step ② to make the steel strip become blade primary products;
⑥ grinding outer edge by feeding ⑤ processed blade primary product into water mill to grind the outer surface of the blade primary product, wherein the outer edge is the surface of two blades facing away from each other
⑦ grinding the cutting edge, namely, feeding the blade primary product subjected to the external opening grinding treatment in the step ⑥ into a water mill to grind the edge part so as to form the blade 1;
⑧ assembling, the blade 1 is put into the blade mounting groove 31 of the handle 3, the elastic buckle 32 of the blade mounting groove 31 is buckled in the buckle groove 13 of the corresponding blade 1, then the knife edges of the two blades 1 are opposite, and the rivet 2 and the gasket are riveted on the rivet hole between the two blades 1.
Preferably, the heat treatment comprises heating, quenching and tempering.
Preferably, the following steps are added between the step ⑦ and the step ⑧:
and (4) radian pressing, namely feeding the blades 1 subjected to the edge grinding treatment in the step ⑦ into a radian pressing die one by one, and bending the blades 1 in a radian manner towards one side deviating from the plane extension direction of the blades at the edge part 11 above the rivet hole.
Preferably, during the assembly process at step ⑧, the adjustable touch block 4 is finally fitted into place in the socket recess 34 on the handle 3.
Preferably, there is also included the step of, during the stock layout at step ①, making the apex angle d of each blade profile unit a 90 DEG ≦ d ≦ 170 deg.
Preferably, the following steps are added between the step ⑦ and the step ⑧:
injection molding, the injection molding machine performs injection molding of the handle 3.
Preferably, the method finally comprises the following steps:
⑨, checking, performing trial shearing by using standard four-layer cotton cloth, and checking whether the scissors are qualified;
⑩ and packaging with scissors.
While the invention has been illustrated and described with respect to specific embodiments and alternatives thereof, it will be understood that various changes and modifications can be made without departing from the spirit and scope of the invention. It is understood, therefore, that the invention is not to be in any way limited except by the appended claims and their equivalents.
Claims (10)
1. The embroidery scissors comprise two blades (1) which are mutually overlapped and are arranged in a crossed manner at the middle part, rivet holes which vertically penetrate through the overlapped and crossed corresponding parts of the blades (1) are respectively arranged on the two blades (1), the embroidery scissors further comprise rivets (2) which are arranged between the rivet holes of the two blades (1) in a penetrating manner so that the two blades (1) can rotate around the rivets (2) to realize opening and closing of the knife edges, the positions of the two blades (1) above the rivets (2) are knife edge parts (11) used for matching shearing, the positions below the rivets (2) are knife handle parts (12) used for controlling the opening and closing of the knife edge parts (11) to shear, and the embroidery scissors further comprise two handles (3) which are respectively and fixedly arranged on the lower end parts of the knife handle parts (12); the method is characterized in that: a clamping groove (13) is formed in the middle of the inner side edge of the handle part (12) of each blade (1) facing the folding direction, and the notch of each clamping groove (13) faces the side where the inner side edge of the other blade (1) is located;
the upper end middle part of every handle (3) is equipped with top-down extension and with the lower tip phase complex blade mounting groove (31) that corresponds handle of a knife position (12), the lower extreme periphery that corresponds handle of a knife position (12) is arranged in the cover of blade mounting groove (31) of handle (3), just still set firmly elasticity buckle (32) in blade mounting groove (31) of handle (3), elasticity buckle (32) are detained and are arranged in buckle recess (13) that correspond blade (1) so that blade (1) can't deviate from in blade mounting groove (31).
2. The embroidery shears according to claim 1, wherein: every handle (3) is equipped with two and inwards link up flutings (33) to blade mounting groove (31) in the inboard lateral wall upper portion of its orientation direction of folding from handle (3) upper end terminal surface downwardly extending, and by this lateral wall outside, two flutings (33) set up at an interval each other, elasticity buckle (32) comprise rectangular form buckle body (321) that handle (3) lateral wall that is located between two flutings (33) formed and set up on the inside wall upper portion of buckle body (321) and convex part (322) that are protruding in blade mounting groove (31), the shape size of convex part (322) and the position on this lateral wall and the shape size and the position of buckle recess (13) of handle of a knife position (12) are adapted so that convex part (322) can fixed the knot place in buckle recess (13) of blade (1).
3. The embroidery shears according to claim 2, wherein: each handle (3) is provided with an inserting groove (34) and an adjustable touch block (4) arranged in the inserting groove (34) at a corresponding position on the lower part of the inner side wall of the handle (3) facing the folding direction, the inner end of the adjustable touch block (4) is inserted in the inserting groove (34), the outer end of the adjustable touch block extends out from the inserting groove (34) towards the side notch of the other handle (3) and extends and protrudes towards the direction close to the other handle (3), and the outer ends of the two adjustable touch blocks (4) can touch each other to limit the folding limit position of the knife edge part (11); an adjusting locking component used for adjusting and fixing the inserting position of the adjustable touch block (4) in the inserting groove (34) so as to adjust the mutual touch position of the outer ends of the two adjustable touch blocks (4) is arranged between the inserting groove (34) and the adjustable touch block (4).
4. The embroidery shears of claim 3, wherein: the groove channel of the insertion groove (34) penetrates downwards to the side wall of the bottom of the handle (3) to form a lower groove opening (341), and the adjustable touch block (4) is upwards inserted into the insertion groove (34) from the lower groove opening (341) and forms tight fit connection with the two communicated side groove openings of the insertion groove (34) and the vertical side groove wall of the lower groove opening (341); adjust locking subassembly is including setting up two erect and put first profile of tooth ripple structure (331) on the lateral groove wall and set up on the contact side wall that cooperatees of touch block (4) with adjustable and with first profile of tooth ripple structure (331) unsmooth complex second profile of tooth ripple structure (41), first profile of tooth ripple structure (331) and second profile of tooth ripple structure (41) are formed by the vertical bar recess and the bar dogtooth that upwards extends of a plurality of notch departments under from along the extending direction of touch block (4) with adjustable unsmooth distribution in proper order.
5. The embroidery shears of claim 3, wherein: the thickness of the adjustable touch block (4) extending out of the outer end part of the insertion groove (34) is larger than that of the part positioned in the insertion groove (34).
6. A manufacturing method for preparing the embroidery scissors of claim 1, characterized in that: the method comprises the following steps:
① layout, drawing a plurality of blade contour units (a) used for forming the outer contour of the blade (1) on the upper surface of the steel strip in sequence along the length extension direction of the steel strip, wherein each blade contour unit (a) is in an isosceles triangle shape, the bottom edge of one blade contour unit (a) is overlapped with the edge line of one side wall of the steel strip perpendicular to the length extension direction of the steel strip, the bottom edge of the other blade contour unit (a) is overlapped with the edge line of the other side wall of the steel strip perpendicular to the length extension direction of the steel strip, two adjacent blade contour units (a) share one equal waist edge, then drawing a first circular contour (b) used for punching a rivet hole at the corresponding position in the middle of each blade contour unit (a), drawing a second circular contour (c) used for punching the buckle groove (13) of two adjacent blades (1) simultaneously at the middle of the equal waist edge shared by two adjacent blade contour units (a), the second circular contour (c) is overlapped with the center of the same waist edge, the extending along the odd number of the equal waist edge, and the steel strip is drawn at the second isosceles contour (c) only at the position shared by the odd number of the equal waist edge in the length extension direction of the steel;
②, blanking, namely, placing the steel strip subjected to the layout in the step ① on a punch press, punching rivet holes on the steel strip according to a first circular contour (b), punching buckling grooves (13) on the steel strip according to a contour of a second circular contour (c), and punching creases on the steel strip according to a contour of a blade contour unit (a);
③ heat treatment, namely, the steel strip which is punched and processed in the step ② is sent into a quenching furnace for heat treatment, so that the steel strip meets the use hardness requirement;
④ grinding the inner surface of the steel strip by feeding the steel strip after heat treatment in step ③ into a water mill;
⑤ breaking, namely feeding the steel strip with the ground steel strip of the step ④ into a breaking machine, and sequentially breaking the creases of the blade profile units (a) punched on the steel strip in the step ② to make the steel strip become blade primary products;
⑥ grinding the outer opening by feeding the blade primary product processed in step ⑤ into a water mill to grind the outer surface of the blade primary product;
⑦ grinding the edge, namely, feeding the blade primary product after the outer opening grinding treatment in the step ⑥ into a water mill to grind the edge part so as to form the blade (1);
⑧ assembling, namely, the blades (1) are arranged in the blade mounting groove (31) of the handle (3), the elastic buckle (32) of the blade mounting groove (31) is buckled in the buckle groove (13) of the corresponding blade (1), then the knife edges of the two blades (1) are opposite, and the rivet (2) and the gasket are riveted on the rivet hole between the two blades (1).
7. The method for manufacturing the embroidery scissors according to claim 6, wherein: the heat treatment includes heating, quenching and tempering.
8. The method for manufacturing the embroidery shears according to claim 6, wherein the following steps are added between the step ⑦ and the step ⑧:
and (4) radian pressing, namely feeding the blades (1) subjected to the edge grinding treatment in the step ⑦ into a radian pressing die one by one, and bending the blades (1) in a radian manner towards one side deviating from the extension direction of the blade plane at the edge part (11) above the rivet hole.
9. The method for manufacturing the embroidery scissors according to claim 6, wherein in the step ⑧ of assembling, the adjustable touch block (4) is finally adjusted and installed in a proper position in the insertion groove (34) on the handle (3).
10. The method for manufacturing the embroidery shears according to any one of claims 6-9, further comprising the step of setting the vertex angle d of each blade profile unit (a) to 90 ° ≦ d ≦ 170 ° during the layout step ①.
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112265020A (en) * | 2020-10-09 | 2021-01-26 | 厦门昱祥工业有限公司 | Scissors for pneumatic scissors and manufacturing method thereof |
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