CN208235106U - A kind of cutter of sewing machine - Google Patents

Abstract

The utility model provides a kind of cutter of sewing machine, belongs to field of mechanical technique.It solves the problems, such as existing cutter to the cutting low precision of cloth.The cutter of this sewing machine includes crane, cutter, presser feet and the lower knife plate that can be rotated, swivel mount with lower knife plate synchronous rotary is installed on crane, presser feet and cutter are installed in the lower part of swivel mount, presser feet includes the first pressing plate and the second pressing plate, there is the bar shaped gap passed through for cutter lower part, the width in bar shaped gap is slightly larger than the thickness of cutter between first pressing plate and the second pressing plate.The cutter of this sewing machine is structurally reasonable, and it is high to cut precision.

Description

A kind of cutter of sewing machine

Technical field

The utility model belongs to field of mechanical technique, is related to a kind of cutter, the cutter dress of especially a kind of sewing machine It sets.

Background technique

Existing numerical control sews process equipment, including sewing template idler wheel grasping drive unit, X, Y motion device, automatically controlled Case and control system, sewing device, rack and board etc.；It also needs to carry out the edge of sewing cloth after the completion of sewing process Trimming, if completing the trimming to cloth while processing in numerical control sewing process equipment, that will greatly promote working efficiency. People design the cutter of trimming on sewing machine thus.

Such as a kind of cutting knife system [notification number CN205974991U] of Intelligent sewing machine of Chinese patent, it is characterised in that: Including workbench above section and following part；Workbench above section is connect by elevating mechanism with connecting plate, elevating mechanism The ascending motion of workbench above section is controlled, the bottom of working plate, the work of rising are partially installed below the workbench of rising Make platform above section bottom and upper cutting knife is set, is provided at the top of workbench above section and cooperates cutter groove with upper cutting knife.It should Scheme can be realized the function of trimming in processing, and in order to avoid cutting knife and presser feet interfere, therefore use tool There is a pressing ring of circular upper knife groove, but caused using circular upper knife groove when cutting, cutting knife is stopped over the cloth of near sites Material can cause cloth fold herein in this way during cutting knife is cut in relaxed state, not only influence the essence of Cloth Cutting Degree, has an effect on the aesthetics of product.

Summary of the invention

The purpose of this utility model is the presence of the above problem in view of the prior art, proposes a kind of cutter dress of sewing machine It sets, cutter technical problem to be solved, which makes how to improve when sewing machine cutter cuts cloth, cuts essence Degree.

The purpose of this utility model can be realized by the following technical scheme: a kind of cutter of sewing machine, including rise Frame, cutter, presser feet and the lower knife plate that can be rotated drop, which is characterized in that rotation synchronous with lower knife plate is equipped on the crane The swivel mount turned, the presser feet and cutter are installed in the lower part of swivel mount, and the presser feet includes the first pressing plate and the second pressing plate, There is the bar shaped gap passed through for cutter lower part, the width in the bar shaped gap is bigger between first pressing plate and the second pressing plate In the thickness of cutter.

The principles of the present invention are as follows: in use, crane decline is pressed in presser feet on lower knife plate cloth, cutting simultaneously Knife also moves downward and the bar shaped gap across the first pressing plate of presser feet and the second pressing plate cuts cloth；Due to item The width in shape gap is slightly larger than the thickness of cutter, therefore during cutting, the first pressing plate and the second pressing plate of presser feet can be tight The close cutter that is pressed in is cut on the edge in path, and this pressing by cloth by the first pressing plate and the second pressing plate cuts path side The cloth of edge can be in tensioned state always, since presser feet and cutter are installed on swivel mount, in the change side of cutting To in the process, with the rotation of swivel mount and lower knife plate, presser feet can keep rotating synchronously and is adaptively adjusted with cutter, Presser feet is pressed in always on the cloth for cutting routed edges in this way, and cutting for cutter will not make the cloth for cutting routed edges wrinkle, Therefore the accuracy cut can be guaranteed.

In a kind of cutter of above-mentioned sewing machine, the both ends at the both ends of first pressing plate and second pressing plate Being upturned makes the both ends of the first pressing plate lower surface and the both ends of the second pressing plate lower surface be respectively formed the guide surface of arc.Due to The both ends of first pressing plate and the both ends of the second pressing plate upwarp, and the both ends of two pressure plates lower surface are respectively formed the guiding of arc Face, the feeding of such cloth and discharging process are more smooth, and presser feet can preferably be cooperated with cloth, it is ensured that cloth feeding with Discharging process is wrinkle resistant, remains tensioned state, so that cutter accurately cuts cloth.

In a kind of cutter of above-mentioned sewing machine, first pressing plate and second pressing plate are arranged in parallel, institute Stating presser feet further includes interconnecting piece, and the both ends at the both ends of the first pressing plate and the second pressing plate are linked as one respectively by the interconnecting piece accordingly Body.The both ends at the both ends of the first pressing plate and the second pressing plate are linked together by interconnecting piece, such bar shaped gap is changed into circumferential direction Closed strip-shaped hole, the globality of two pressure plates is stronger, planarization is able to maintain synchronization, in this way can in the compression to cloth Guarantee be located at cut path two edges cloth degree of tautness be it is identical, i.e., when cutter is cut, cutter two sides The stress that is subject to of cloth it is identical, so that guarantee cutter cuts precision.

In a kind of cutter of above-mentioned sewing machine, the presser feet further includes two guide rods, and two guide rods erect respectively It is slidably connected on swivel mount respectively to the upper end of the two sides that cutter is arranged in, and two guide rods, the lower end difference of two guide rods It is hinged with the both ends of presser feet, the elastic component for making the presser feet that there is pushing trend is equipped on each guide rod.It is led by setting Bar gives presser feet one pretightning force, enables presser feet can be stable when swivel mount moves down work using the elastic component on guide rod It is pressed on cloth, to prevent cloth in cutting process from wrinkling, improves and cut precision.

In a kind of cutter of above-mentioned sewing machine, the elastic component is spring, and the spring is set in described lead On bar, the upper end of the spring is resisted against on swivel mount, and the lower end of the guide rod has boss, and the lower end of the spring is resisted against On boss.Elastic component can also use elastic piece, and one end of elastic piece limits on swivel mount, and the other end limit of elastic piece exists The lower end of guide rod.

In a kind of cutter of above-mentioned sewing machine, the cutter is vertically arranged disc cutter, the lifting Shaft is rotatably connected on frame, the swivel mount is connected in the lower end of the shaft, is equipped with first motor on the swivel mount, The first motor drives cutter rotation by the first transmission mechanism, and the first motor is located at the underface of shaft, described to cut Knife is located at the underface of first motor.Drive shaft that its OQ t frame is made to rotate by the first driving mechanism, due to rotation Pivoted frame is mounted on the lower end of shaft, therefore shaft is able to drive entire swivel mount rotation, by the way that first motor and cutter to be arranged In the underface of shaft, first motor and cutter in this way when shaft rotates, are entirely rotated generally on the axial line of shaft Frame, cutter, the whole rotary inertia of first motor and the first transmission mechanism are relatively small, are not susceptible to shake, rotation process More balance, stability, keep the cutting precision of cutter during the cutting process higher.

In a kind of cutter of above-mentioned sewing machine, the axial line of the first motor output shaft and the shaft Axial line is coaxial, and the center of the cutter is located on the axial line of the output shaft of the first motor.By making shaft, the first electricity The output shaft of machine and the center of cutter are on same axial line, such first motor, cutter rotary inertia be almost equal to zero, turn The minimal effect of transmission mechanism is only sold in the rotation of axis, therefore shaft rotation is more stable and reliable, and cutter can accurately be cut out respectively Kind shape.

In a kind of cutter of above-mentioned sewing machine, first transmission mechanism includes being rotatably connected on from top to bottom The first transmission shaft, second driving shaft and third transmission shaft on swivel mount, first transmission shaft, second driving shaft and third pass Moving axis is horizontally disposed and is parallel to each other, and first transmission shaft one end is connected by the output shaft of bevel gear set and first motor It connects, the other end of first transmission shaft is equipped with the first fluted disc, and the second driving shaft is equipped with and engages with first fluted disc The second fluted disc, the third transmission shaft is equipped with the third fluted disc that engage with the second fluted disc, and the cutter is set in third and passes On moving axis.Cooperate transmission shaft disposed in parallel to carry out transfer motion power by using helical gear, makes the horizontal direction of first motor Rotation becomes the rotation of cutter vertical direction, while carrying out power transmission using multiple fluted discs, is engaged by high-precision fluted disc Mode keeps power transmission more stable, continuous, and the cutting of cutter is more stable and reliable.In addition, the first transmission mechanism can also use The transmission mechanisms such as synchronous belt or worm and gear replace realizing.

In a kind of cutter of above-mentioned sewing machine, the diameter of second fluted disc is greater than the first fluted disc and the second tooth The diameter of disk.Since the second fluted disc is located among the first fluted disc and third fluted disc, using the second fluted disc of major diameter, can be made The setting of the diameter of one fluted disc and third fluted disc is relatively small, to reduce the volume of the first fluted disc and third fluted disc, so that The overall volume of first transmission mechanism is reduced, and then the opposite weight for reducing the first transmission mechanism, is also just reduced Rotary inertia of first transmission mechanism in shaft rotation process, on the one hand makes the rotation process of shaft more stable, raising is cut The cutting effect of knife；On the other hand reduce the intensity requirement to shaft.

Compared with prior art, the cutter of the sewing machine of the utility model has the advantage that 1, using cutter, cuts out It cuts more stable, vibration and noise will not be generated, cutting process is smooth continuous；2, first motor, the first transmission mechanism are rationally set And cutter helps to improve cutting precision when cutting floral designs to small, shaft stability of rotation is born caused by shaft； 3, the power transmission between first motor and cutter is steadily reliable, and cutter, which is cut, to be stablized precisely；4, presser feet and cutter cooperation are close, Presser feet compress effect is good, can further increase cutting precision.

Detailed description of the invention

Fig. 1 is the structural schematic diagram of the cutter of the sewing machine of the utility model.

Fig. 2 is the structural schematic diagram of the presser feet of the utility model.

Fig. 3 is the cross-sectional view of the cutter of the sewing machine of the utility model.

Fig. 4 is enlarged drawing at A in Fig. 1.

Fig. 5 is enlarged drawing at B in Fig. 3.

In figure, 1, mounting plate；1a, sliding rail；2, lifting cylinder；3, connecting plate；3a, sliding block；4, the second motor, 5, second pass Motivation structure；5a, the first synchronizing wheel；5b, the second synchronizing wheel；5c, synchronous belt；6, crane；7, shaft；8, swivel mount；9, spline Set；10, first motor；11, the first transmission mechanism；11a, the first transmission shaft；11a1, the first fluted disc；11b, second driving shaft； 11b1, the second fluted disc；11c, third transmission shaft；11c1, third fluted disc；12, cutter；13, bevel gear set；14, presser feet；14a, One pressing plate；14b, the second pressing plate；14c, bar shaped gap；14d, interconnecting piece；14e, guide surface；15, guide rod；15a, elastic component； 15b, boss；16, lower knife plate mounting base；16a, lower knife plate；16a1, cutter groove；17, third motor；18, rotating bar.

Specific embodiment

It is specific embodiment of the utility model and in conjunction with attached drawing below, the technical solution of the utility model is made further Description, but the utility model is not limited to these examples.

As shown in Figure 1 and Figure 4, sewing machine is equipped with mounting plate 1, and the cutter of this sewing machine includes lifting cylinder 2, connects Fishplate bar 3, the second motor 4, the second transmission mechanism 5, crane 6, cutter 12, presser feet 14, the lower knife plate 16a that can be rotated and shaft 7, lifting cylinder 2 is fixedly mounted on mounting plate 1, is equipped with two sliding rail 1a on mounting plate 1 in parallel, and connecting plate 3 is equipped with and slides The corresponding sliding block 3a of rail 1a, the mandril of lifting cylinder 2 are fixedly connected with connecting plate 3, and the second motor 4, crane 6 are fixedly mounted On connecting plate 3, shaft 7 is rotatably connected on crane 6, and the second motor 4 drives shaft 7 to rotate by the second transmission mechanism 5. The lower end of shaft 7 is connected with swivel mount 8, more precisely, passes through the connected spline housing 9 of screw, the lower end of shaft 7 on swivel mount 8 It is inserted into spline housing 9 and cooperates with spline housing 9 and position.First motor 10 is installed, first motor 10 is passed by first on swivel mount 8 Motivation structure 11 is connected with cutter 12, and first motor 10 is located at the underface of shaft 7, and cutter 12 is vertically arranged in first motor 10 Underface.In the present embodiment, cutter 12 is disc cutter.Lower knife plate 16a is located at the lower section of crane 6, be equipped on crane 6 with The swivel mount 8 of lower knife plate 16a synchronous rotary, presser feet 14 and cutter 12 are installed in the lower part of swivel mount 8, and presser feet 14 includes first Pressing plate 14a and the second pressing plate 14b, between the bar shaped passed through for 12 lower part of cutter between the first pressing plate 14a and the second pressing plate 14b The width of gap 14c, bar shaped gap 14c are slightly larger than the thickness of cutter 12.Due to the bar shaped gap 14c using bar shaped, notch and cut Knife 12 is closer to the contact surface of presser feet 14 and cloth is larger, in this way to prevent cloth in cutting process from wrinkling, improves and cuts essence Degree.

Specifically, as shown in Fig. 2, the both ends of the first pressing plate 14a and the both ends of the second pressing plate 14b, which are upturned, makes The both ends of the both ends of one lower surface pressing plate 14a and the second lower surface pressing plate 14b are respectively formed the guide surface 14e of arc.First pressing plate 14a and the second pressing plate 14b are arranged in parallel, and presser feet 14 further includes interconnecting piece 14d, and interconnecting piece 14d is respectively by the two of the first pressing plate 14a End and the both ends of the second pressing plate 14b are linked together accordingly closes the bar shaped gap 14c.

Presser feet 14 further includes two guide rods 15, and two guide rods 15 are vertically provided at the two sides of cutter 12 respectively, and two are led The upper end of bar 15 is slidably connected at respectively on swivel mount 8, and both ends of the lower end of two guide rods 15 respectively with presser feet 14 are hinged, often The elastic component 15a for making the presser feet 14 that there is pushing trend is equipped on a guide rod 15.Elastic component 15a in the present embodiment is Spring, spring are set on the guide rod 15, and the upper end of spring is resisted against on swivel mount 8, and the lower end of spring is resisted against guide rod 15 On the boss 15b of lower end.By giving presser feet 14 1 pretightning forces using the elastic component 15a on guide rod 15, presser feet 14 is enable to exist Swivel mount 8 can be stable when moving down work be pressed on cloth.In the other embodiments of the utility model, elastic component 15a may be used also To use elastic piece, one end of elastic piece is limited on swivel mount 8, and the other end of elastic piece is limited in the lower end of guide rod 15.

As shown in figs. 3 and 5, the axial line of the output shaft of first motor 10 and the axial line of shaft 7 are coaxial, cutter 12 Center is located on the axial line of the output shaft of an electric motor.First transmission mechanism 11 includes being rotatably connected on swivel mount from top to bottom The first transmission shaft 11a, second driving shaft 11b and third transmission shaft 11c, the first transmission shaft 11a, second driving shaft 11b on 8 and Third transmission shaft 11c is horizontally disposed and is parallel to each other, and first one end transmission shaft 11a passes through bevel gear set 13 and the second motor 4 Output axis connection, the other end of the first transmission shaft 11a is equipped with the first fluted disc 11a1, and second driving shaft 11b is equipped with and first Second fluted disc 11b1 of fluted disc 11a1 engagement, third transmission shaft 11c are equipped with the third fluted disc engaged with the second fluted disc 11b1 11c1, cutter 12 are set on third transmission shaft 11c, it should be understood that being located at the first fluted disc 11a1 and third fluted disc 11c1 The diameter of the second intermediate fluted disc 11b1 is big, and the diameter of the first fluted disc 11a1 and the second fluted disc 11b1 are small, in this way can be in not shadow Make the setting of the diameter of the first fluted disc 11a1 and third fluted disc 11c1 relatively small in the case where sound of movement force transmission effect, to reduce The volume of first fluted disc 11a1 and third fluted disc 11c1, to make the overall volume of the first transmission mechanism 11 be reduced, in turn The opposite weight for reducing the first transmission mechanism 11 also just reduces the first transmission mechanism 11 in 7 rotation process of shaft On the one hand rotary inertia makes the rotation process of shaft 7 more stable, improve the cutting effect of cutter 12；On the other hand reduce To the intensity requirement of shaft 7.

Second transmission mechanism 5 includes the first synchronizing wheel 5a being set on 4 output shaft of the second motor and is set in shaft 7 Second synchronizing wheel 5b, is connected between the first synchronizing wheel 5a and the second synchronizing wheel 5b by synchronous belt 5c, wherein the second synchronizing wheel 5b Between be greater than the first synchronizing wheel 5a between, decelerating effect can be played in this way, make the revolving speed of shaft 7 with respect to the second motor 4 turn Speed reduces, to control rotation precision.

The cutter of this sewing machine further includes lower knife plate mounting base 16 and the third motor 17 being arranged in below cutter 12, Lower knife plate mounting base 16 is equipped with lower knife plate 16a, and the cutter groove 16a1 cooperated with cutter 12, lower knife plate are offered on lower knife plate 16a Mounting base 16 is fixedly connected below rotating bar 18, and third motor 17 is connect by bevel gear set 13 with rotating bar 18, thus realization the Three motors 17 drive lower knife plate mounting base 16 to rotate.

The principles of the present invention are as follows: when in use, the present apparatus passes through the second motor of controller synchronously control 4 and third Motor 17, the second motor 4 drives shaft 7 that its OQ t frame 6 is made to rotate, since swivel mount 8 is mounted under shaft 7 End, therefore shaft 7 is able to drive entire swivel mount 8 and rotates, third motor 17 drives lower knife plate 16a to rotate synchronously, in this way can be with The present apparatus is set to cut out different shapes on cloth.During the cutting process, since first motor 10 and cutter 12 are arranged In the underface of shaft 7, first motor 10 and cutter 12 are generally on the axial line of shaft 7, in this way when shaft 7 rotates, Entirely the whole rotary inertia of swivel mount 8, cutter 12, first motor 10 and the first transmission mechanism 11 is relatively small, is not easy to send out Raw to shake, rotation process more balances, stability, keeps the cutting precision of cutter during the cutting process higher.

The specific embodiments described herein are merely examples of the spirit of the present invention.The utility model institute Belonging to those skilled in the art can make various modifications or additions to the described embodiments or using similar Mode substitute, but without departing from the spirit of the present application or beyond the scope of the appended claims.

Claims (9)

1. a kind of cutter of sewing machine, including crane (6), cutter (12), presser feet (14) and the lower knife plate that can be rotated (16a), which is characterized in that the swivel mount (8) with lower knife plate (16a) synchronous rotary, the pressure are installed on the crane (6) Foot (14) and cutter (12) are installed in the lower part of swivel mount (8), and the presser feet (14) includes the first pressing plate (14a) and the second pressure Plate (14b) has the bar shaped gap passed through for cutter (12) lower part between first pressing plate (14a) and the second pressing plate (14b) (14c), the width of the bar shaped gap (14c) are slightly larger than the thickness of cutter (12).

2. a kind of cutter of sewing machine according to claim 1, which is characterized in that first pressing plate (14a) Both ends and the both ends of second pressing plate (14b), which are upturned, makes the both ends and the second pressing plate of the lower surface the first pressing plate (14a) The both ends of the lower surface (14b) are respectively formed the guide surface (14e) of arc.

3. a kind of cutter of sewing machine according to claim 2, which is characterized in that first pressing plate (14a) and Second pressing plate (14b) is arranged in parallel, and the presser feet (14) further includes interconnecting piece (14d), and the interconnecting piece (14d) respectively will The both ends of first pressing plate (14a) and the both ends of the second pressing plate (14b) are linked together accordingly.

4. a kind of cutter of sewing machine according to claim 2 or 3, which is characterized in that the presser feet (14) is also wrapped Two guide rods (15) are included, two guide rods (15) are vertically provided at the two sides of cutter (12), and the upper end of two guide rods (15) respectively It is slidably connected on swivel mount (8) respectively, both ends of the lower end of two guide rods (15) respectively with presser feet (14) are hinged, and each lead The elastic component (15a) for making the presser feet (14) that there is pushing trend is equipped on bar (15).

5. a kind of cutter of sewing machine according to claim 4, which is characterized in that the elastic component (15a) is bullet Spring, the spring are set on the guide rod (15), and the upper end of the spring is resisted against on swivel mount (8), the guide rod (15) Lower end have boss (15b), the lower end of the spring is resisted against on boss (15b).

6. a kind of cutter of sewing machine according to claim 1 or 2 or 3, which is characterized in that the cutter (12) is Vertically arranged disc cutter is rotatably connected to shaft (7) on the crane (6), and the swivel mount (8) is connected in described turn The lower end of axis (7) is equipped with first motor (10) on the swivel mount (8), and the first motor (10) passes through the first driver Structure drives cutter (12) rotation, and the first motor (10) is located at the underface of shaft (7), and the cutter (12) is located at the first electricity The underface of machine (10).

7. a kind of cutter of sewing machine according to claim 6, which is characterized in that first motor (10) output The axial line of axis and the axial line of the shaft (7) are coaxial, and it is defeated that the center of the cutter (12) is located at the first motor (10) On the axial line of shaft.

8. a kind of cutter of sewing machine according to claim 6, which is characterized in that first transmission mechanism (11) Including the first transmission shaft (11a), second driving shaft (11b) and the third transmission being rotatably connected on swivel mount (8) from top to bottom Axis (11c), first transmission shaft (11a), second driving shaft (11b) and third transmission shaft (11c) are horizontally disposed and mutual In parallel, described first transmission shaft one end (11a) by bevel gear set (13) and first motor (10) output axis connection, described first The other end of transmission shaft (11a) is equipped with the first fluted disc (11a1), and the second driving shaft (11b) is equipped with and first fluted disc Second fluted disc (11b1) of (11a1) engagement, the third transmission shaft (11c) are equipped with the engaged with the second fluted disc (11b1) Three fluted discs (11c1), the cutter (12) are set on third transmission shaft (11c).

9. a kind of cutter of sewing machine according to claim 8, which is characterized in that second fluted disc (11b1) Diameter is greater than the diameter of the first fluted disc (11a1) and the second fluted disc (11b1).