CN111501235B - Multifunctional combined machine composed of perforating machine and embroidery machine - Google Patents

Abstract

The invention discloses a multifunctional combined machine consisting of a perforating machine and an embroidery machine, which comprises a needle plate, a machine head, a blanking device and a lower shaft box, wherein the needle bar driving device comprises a needle bar with a top dead center and a bottom dead center, and a needle bar driver for driving the needle bar to move, the needle bar driver comprises a needle bar driving block, the needle bar driving block is provided with a clamping groove matched with the bottom dead center, the needle bar driving device also comprises a needle bar pressing component for downwards pressing the needle bar when in needle starting so as to enable the bottom dead center to correspond to the clamping groove in height, the blanking device comprises a blanking box, a blanking driver arranged in the blanking box, a thrust shaft driven by the blanking driver, and a blanking block driven by the thrust shaft to slide below a needle bar hole, and the blanking block is provided with a blanking hole matched with the needle plate hole for guiding blanking to fall. When the needle is started, the needle pressing rod assembly downwards presses the needle rod, so that the bottom dead center corresponds to the clamping groove in height, the blanking block can act with blanking, blanking can fall through the blanking port, and accordingly leather blanking can be achieved smoothly.

Description

Multifunctional combined machine composed of perforating machine and embroidery machine

Technical Field

The invention belongs to the technical field of embroidery machines.

Background

In the stopped state of the conventional embroidery machine, the height of the bottom of the presser foot from the needle plate is shown in fig. 1, and is usually 27mm. The automobile seat cushion machine uses leather and other thick materials, so that the distance from the bottom end of the presser foot to the needle plate surface in the stop state needs to be increased, and the leather is convenient to replace. So that the shuttle box body is lowered in the height direction. However, under the condition that the machine head is not changed, the up-and-down stroke of the driver is unchanged, so that the smooth embroidery can be ensured by lengthening the needle bar in order to compensate the reduction of the height position of the shuttle box body.

However, after the needle bar is lengthened, the height position of the bottom dead center in the parking state can be lifted, so that even if the driver moves to the highest position during needle lifting, the clamping groove still cannot touch the bottom dead center, and the needle bar cannot move up and down along with the driver. Therefore, a device is required to push down the needle bar during needle lifting so that the bottom dead center on the needle bar is embedded in the driver clamping groove.

The multifunctional combined machine composed of the perforating machine and the embroidery machine has the embroidery function and also has the perforation function, and when the leather is perforated by the punching needle, the round leather blanking is still connected with the whole leather by wires and cannot fall freely along with gravity in general, so that a mechanism is also needed to completely separate the blanking from the leather. The existing foreign equipment blows off blanking by an air pump, so that an air pipe is required to be paved. If the combined machine is made, the combined machine is messy, more parts are required to be additionally arranged in a avoiding way, and the cost is increased. In order to ensure smooth blanking, the punching needle head and the needle plate hole have a small gap, so that the punching needle head of one specification can only be matched with the needle plate with the corresponding aperture, and the size of the leather aperture cannot be changed by only changing the size of the needle head, so that if the size of the aperture is to be changed, the punching needle heads with different sizes are required to be changed at the same time, the needle plates with different aperture sizes are troublesome to change, and the change is usually that the product with the corresponding aperture is not changed after the factory setting is finished, and one machine only is used for manufacturing products with the corresponding aperture.

Disclosure of Invention

The invention aims to solve the technical problem of providing a multifunctional combined machine consisting of a perforating machine and an embroidery machine, which can downwards press a needle bar when a needle is started, enable a bottom dead center on the needle bar to be embedded into a clamping groove of a driving block, and ensure that blanking is completely separated from leather when perforation is carried out.

In order to solve the technical problems, the invention adopts the following technical scheme: the multifunctional combined machine comprises a needle plate with a needle plate hole, a machine head arranged above the needle plate, a blanking device arranged below the needle plate and a lower shaft box, wherein the machine head comprises a needle bar driving device, the needle bar driving device comprises a needle bar with a top dead center and a bottom dead center, and a needle bar driver for driving the needle bar to move, the needle bar driver comprises a needle bar driving block, the needle bar driving block is provided with a clamping groove matched with the bottom dead center, the needle bar driving device further comprises a needle bar pressing component for downwards pressing the needle bar when the needle is lifted, so that the bottom dead center corresponds to the clamping groove in height, and the blanking device comprises a blanking box, a blanking driver arranged on the blanking box, a pushing force shaft driven by the blanking driver, and a blanking block driven by the pushing force shaft to slide below the needle bar hole, and a blanking port for guiding blanking to fall in a matching manner with the needle plate hole.

Preferably, the needle pressing rod assembly comprises a needle pressing rod for pressing the upper dead point and a driving piece for driving the needle pressing rod to act, and the needle pressing rod is connected with a reset spring for realizing upward reset after the pressing plate is in clearance fit with the upper dead point.

Preferably, the bottom of the needle bar pressing rod is provided with a pressing plate pressed with the upper dead point.

Preferably, the needle pressing rod assembly further comprises a swinging shaft and a swinging rod rotatably connected to the swinging shaft, and the needle pressing rod is driven by the swinging rod.

Preferably, the needle pressing rod assembly further comprises an air cylinder, and the swing rod is driven to rotate through the extension and retraction of a piston rod of the air cylinder.

Preferably, the swing rod is provided with a rear protruding part protruding backwards, the piston rod is connected with a top plate, and the rear protruding part is connected with a rolling bearing in rolling fit with the top plate.

Preferably, the blanking device further comprises a driving block and a blanking sliding block, the blanking block is arranged above the blanking sliding block, one end of the thrust shaft is fixed with the driving block, and the other end of the thrust shaft is fixed with the blanking sliding block.

Preferably, the blanking driver comprises a blanking driving shaft and a cam arranged on the blanking driving shaft, the thrust shaft is connected with a spring for driving the thrust shaft to axially move along the cam, and the driving block is rotatably provided with a bearing roller which is abutted against the cam.

Preferably, the blanking slide block is correspondingly provided with a blanking chute below the blanking port for guiding blanking to slide down.

Preferably, the blanking box is arranged side by side with the lower axle box, the lower axle box is provided with the lower axle, and the blanking driving shaft is an extension part of the lower axle, or the blanking driving shaft is connected with the lower axle through a coupling.

The technical scheme adopted by the invention has the following beneficial effects:

1. when the needle is started, the needle pressing rod assembly presses the needle rod downwards so that the bottom dead center corresponds to the clamping groove in height, the needle rod driving block can rotate to enable the bottom dead center to be embedded into the clamping groove of the driving block, and therefore the needle rod can move up and down along with the needle rod driver.

2. As the upper dead point and the lower dead point are the same and are fixedly connected with the needle bar by the screw lock, the upper dead point can press down the needle bar, so that the needle bar is pressed down by adopting a pressing plate upper dead point mode by means of the inherent upper dead point on the existing needle bar without additionally arranging a pressing fulcrum on the needle bar.

3. Two limiting holes on the pressing plate are respectively matched with the needle bar and the guide bar, so that the needle bar pressing bar is prevented from rotating.

4. The swing rod is forced to rotate around the swing shaft, so that the needle rod pressing rod is pressed downwards, and the needle rod pressing rod is pushed to push the upper dead point downwards after being lowered until the lower dead point on the needle rod is embedded into the clamping groove of the driving block. After the pressing action is completed, the needle bar pressing rod is released from the pressing plate and the upper dead point and then is reset upwards through the reset spring, and then the needle bar can work normally. The needle bar pressing rod can further lift the swinging rod to rotate and reset, so that the swinging rod can be driven to rotate around the swinging shaft through simple horizontal linear expansion.

5. The piston rod of the air cylinder stretches and contracts to drive the swinging rod to rotate, and a complex transmission structure is not needed.

6. The swinging rod is convenient to act on the cylinder and the needle bar pressing rod through the rear protruding part and the swinging head, rolling contact is realized between the swinging rod and the top plate and between the swinging rod and the needle bar pressing rod through the rolling bearing, the friction force is small, the transmission is smoother, and the noise is small.

7. The blanking driver drives the blanking block to slide below the needle plate hole, the blanking block can act with blanking, make blanking drop through the blanking mouth, thus can realize the blanking of leather smoothly, when needing to change the perforation aperture, the needle plate remains unchanged, only need to change the needle head of punching, can still guarantee blanking and leather to be separated completely, the suitability is strong.

8. When the cam rotates, the cam is in rolling fit with the bearing roller to act on the driving block, and the pushing shaft can push the blanking slide block to do reciprocating linear motion through the fit of the pushing shaft and the spring.

9. The blanking falls into the blanking chute through the blanking port and slides downwards, and the blanking block can be made of plastics because the needle plate is made of steel, so that noise generated by friction can be reduced.

10. In order to avoid setting up the power supply for doffer alone, blanking box sets up with lower axle box side by side, and the blanking drive shaft is the extension of lower axle, therefore only needs the lower axle of extension conventional embroidery machine, or lower axle length is unchangeable, connects blanking drive shaft and lower axle through the shaft coupling, and when as the combination machine, it is coaxial and not have the interference completely.

The specific technical scheme and the beneficial effects of the invention are described in detail in the following detailed description with reference to the accompanying drawings.

Drawings

The invention is further described with reference to the drawings and detailed description which follow:

fig. 1 is a schematic view of a conventional embroidery machine in a stopped state;

FIG. 2 is a schematic view showing a partial structure of an embroidery machine according to the present invention;

FIG. 3 is a schematic view showing the installation structure of the needle bar driving device of the embroidery machine on the needle bar frame;

FIG. 4 is a schematic view of the structure of the present invention in which the needle bar assembly is pressed;

FIG. 5 is a schematic diagram showing the cooperation structure of the needle bar driver and the needle bar in the present invention;

FIG. 6 is a schematic diagram of a blanking device of the perforating machine;

FIG. 7 is a schematic view of a partial structure of a blanking device of a punch according to the present invention;

in the figure: 100-needle bar frame assembly; 101-a needle bar frame upper cross beam; 1-a needle bar driving device; 11-a needle bar compression bar; 111-a platen; 1111-a guide hole; 112-upper rolling bearing; 12-swinging rod; 121-a swinging head; 122-rear rolling bearing; 13-cylinder; 131-top plate; 14-a needle bar; 141-bottom dead center; 142-top dead center; 15-a needle bar driver; 151-needle bar drive block; 1511-a clamping groove; 16-a swing shaft; 200-a handpiece housing assembly; 2-a blanking device of the perforating machine; 20-blanking box; 21-a blanking driving shaft; 211-supporting bearings; 22-cam; 23-a drive block; 231-receiving slots; 24-guiding shaft; 25-blanking slide blocks; 251-blanking chute; 26-blanking block; 261-blanking port; 27-thrust shaft; 28-bearing rollers; 300-needle plate.

Detailed Description

The following description of the embodiments of the present invention will be made clearly and completely with reference to the accompanying drawings, in which it is apparent that the embodiments described are only some embodiments of the present invention, but not all embodiments. The following description of at least one exemplary embodiment is merely exemplary in nature and is in no way intended to limit the invention, its application, or uses. All other embodiments, which can be made by those skilled in the art based on the embodiments of the invention without making any inventive effort, are intended to be within the scope of the invention.

In the present invention, words such as "front", "rear", "upper", "lower", etc., indicating an azimuth or a positional relationship are merely based on the azimuth or the positional relationship shown in the drawings, and are merely for convenience of description of the present invention and to simplify the description, and do not indicate or imply that the apparatus/elements referred to must have a specific azimuth or be constructed and operated in a specific azimuth, and thus should not be construed as limiting the present invention.

In the present invention, unless explicitly specified and limited otherwise, the terms "mounted," "connected," "secured," and the like are to be construed broadly and include, for example, fixedly attached, detachably attached, or integrally attached; can be mechanically or electrically connected; can be directly connected or indirectly connected through an intermediate medium, and can be communication between two elements. The specific meaning of the above terms in the present invention can be understood by those of ordinary skill in the art according to the specific circumstances.

Those skilled in the art will appreciate that the features of the examples and embodiments described below can be combined with one another without conflict.

The perforating machine and the embroidery machine can form a combined machine, for example, the combined machine is used for processing an automobile cushion, and the combined machine can be used for perforating and embroidering. For the embroidery machine, a lower shaft box is provided below the needle plate as a conventional structure, and the lower shaft box is mounted with a lower shaft.

Referring to fig. 1 to 7, the multifunctional combined machine consisting of the punch and the embroidery machine includes a needle plate 300 having a needle plate hole, a head provided above the needle plate, a blanking device 2 provided below the needle plate, and a lower shaft box. The handpiece comprises a handpiece housing assembly 200 and a needle bar frame assembly 100, wherein the needle bar frame assembly 100 comprises a needle bar frame and also comprises a needle bar driving device 1, the handpiece housing assembly 200 comprises a handpiece housing, a cam link mechanism and the like, and other structures can refer to the prior art.

For leather and other thicker cloth (leather), the height requirement from the lower end of the shell to the needle board surface is higher than that of a common embroidery machine in order to facilitate the replacement of the leather, so that the position of the shuttle box body in the height direction can be reduced. Meanwhile, in order to compensate for the reduction of the height position of the shuttle box body, the smooth embroidery is ensured by a mode of lengthening the needle rod. After the needle bar is lengthened, the height position of the bottom dead center in the parking state can be lifted, so that the clamping groove of the needle bar driver can not touch the bottom dead center even if the needle bar driver moves to the highest position. Therefore, the needle bar driving device can downwards press the needle bar when the needle is started, so that the lower dead point on the needle bar is embedded into the driving block clamping groove.

Referring to fig. 2 to 5, the needle bar driving device 1 of the embroidery machine includes a needle bar 14 having a top dead center 142 and a bottom dead center 141, and a needle bar driver 15 driving the needle bar 14 to move, the needle bar driver 15 includes a needle bar driving block 151, and the needle bar driving block 151 is provided with a card slot 1511 cooperating with the bottom dead center 141.

Wherein, the bottom of the needle bar 14 is detachably connected with an embroidery needle or a punching needle head to respectively realize the embroidery and punching functions, and the embroidery and punching functions are replaced according to the use requirement.

In order to realize the downward pressing of the needle bar 14 during the needle lifting, the needle bar driving device 1 of the embroidery machine further comprises a needle bar pressing assembly for pressing the needle bar 14 downward during the needle lifting so that the bottom dead center 141 corresponds to the clamping groove 1511 in height. When the needle is started, the needle bar 14 is pressed downwards by the needle bar pressing component, so that the bottom dead center 141 corresponds to the clamping groove 1511 in height, the needle bar driving block 151 can rotate to enable the bottom dead center 141 to be embedded into the driving block clamping groove 1511, and accordingly the needle bar 14 can move up and down along with the needle bar driver 15.

In this embodiment, the needle pressing rod assembly includes a needle pressing rod 11 that presses the top dead center 142 and a driving member that drives the needle pressing rod 11 to move, and a guide hole that is matched with the needle pressing rod 11 is provided on the needle pressing rod upper beam 101 to guide the needle pressing rod 11 to move linearly up and down.

For pressing with the top dead center 142, a pressing plate 111 pressing with the top dead center 142 is disposed at the bottom of the needle bar pressing rod 11, and two limiting holes 1111 are disposed on the pressing plate 111 and respectively match with the needle bar 14 and the guide bar (the guide bar is parallel to the needle bar), so that the needle bar pressing rod 11 is prevented from rotating. With the aid of the top dead center 142 inherent to the existing needle bar, the needle bar 14 is pressed downwards by adopting the mode of the top dead center 142 of the pressing plate 111, and no pressing fulcrum is needed to be additionally arranged on the needle bar.

In addition, the needle bar compression bar 11 is connected with a return spring for realizing upward return after the compression plate is disengaged from the top dead center 142. The needle pressing rod assembly further comprises a swinging shaft 16 and a swinging rod 12 rotatably connected with the swinging shaft 16, and the needle pressing rod 11 is driven by the swinging rod 12. The swing rod 12 is forced to rotate around the swing shaft 16, so that the needle rod pressing rod 11 is pressed downwards, and the needle rod pressing rod 11 descends to push the upper dead point 142 downwards until the lower dead point 141 on the needle rod is embedded into the clamping groove 1511 of the driving block. After the pressing action is completed, the needle bar pressing rod 11 is released from the pressing plate 111 and the top dead center 142 and then is reset upwards by the reset spring, and then the needle bar 14 can work normally. The needle bar compression bar 11 can further lift the swing bar 12 to rotate and reset, so that the swing bar can be driven to rotate around the swing shaft through simple horizontal linear expansion and contraction.

The needle pressing rod assembly further comprises an air cylinder 13, and the swing rod 12 is driven to rotate through the extension and retraction of a piston rod of the air cylinder 13. No complex transmission structure is required.

The swing lever 12 is provided with a rear projection projecting rearward, to which a rear rolling bearing 122 is connected. The swing lever 12 is provided with a swing head 121 protruding forward. The upper end of the needle bar compression bar 11 is connected with an upper rolling bearing 112, and the swinging head 121 is provided with an arc surface matched with the rolling bearing. Rolling contact is realized by adopting the rolling bearing, the friction force is smaller, the transmission is smoother, and the noise is smaller.

In addition, the needle plate is kept unchanged, and only the punching head is replaced when the punching hole diameter is required to be changed aiming at the needle plate holes with the same hole diameter, so that the blanking device is arranged below the needle plate to ensure smooth blanking. Referring to fig. 6 and 7, the blanking device 2 includes a blanking box 20, a blanking driver mounted on the blanking box 20, a thrust shaft 27 driven by the blanking driver to slide below the needle plate holes, and a blanking block 26 driven by the thrust shaft, wherein the blanking block 26 is provided with a blanking port 261 for guiding blanking to fall in cooperation with the needle plate holes.

Wherein, blanking piece 24 installs in blanking slider 25, and blanking slider 25 top is equipped with upwards convex boss, and blanking piece 24 installs in the boss upper plane. One end of the thrust shaft is fixed with the driving block 23, and the other end is fixed with the blanking slide block 25.

The driving block 23 is positioned on the inner side of the side wall of the blanking box 20, and the blanking slide block 25 is positioned on the outer side. In order to realize the linear movement of the thrust shaft 27, a guide hole matched with the thrust shaft is arranged on the side wall of the blanking box 20 to guide the thrust shaft 27 to move linearly.

Further, in order to guide the thrust shaft 27 to move linearly, the guide shaft 24 is further included, one end of the guide shaft 24 is in clearance fit with the inner hole of the driving block 23, and the other end of the guide shaft is in clearance fit with the inner hole of the blanking slider 25. Here, two guide shafts 24 are provided, and are symmetrically disposed on both sides of the thrust shaft 27. The side wall of the blanking box 20 is provided with a left guide hole and a right guide hole which enable the guide shaft 24 to pass through, the guide holes corresponding to the blanking box are radially provided with threaded holes, and the guide shaft 24 and the blanking box 20 can be fixedly matched through screwing a set screw into the threaded holes, so that the guide shaft 24 is fixed on the blanking box 20.

Since the needle plate is made of steel, the blanking block 24 can be made of plastic, so that noise generated by friction can be reduced. The blanking slider 25 is correspondingly provided with a blanking chute 251 below the blanking port 261 for guiding blanking to slide down.

In this embodiment, the blanking driver comprises a blanking drive shaft 21, a cam 22 mounted to the blanking drive shaft 21, the blanking drive shaft 21 being perpendicular to the thrust shaft 27, the cam 22 acting on the drive block 23. The rotation of the cam 22 is converted into the linear movement of the thrust shaft 27, and the blanking slider 25 is driven to slide linearly. Meanwhile, a spring for driving the thrust shaft 27 to axially move toward the cam 22 is connected to the thrust shaft 27.

In order to reduce the impact and friction force of the cam 22, the driving block 23 is rotatably provided with bearing rollers 28 abutting against the cam 22, thereby realizing rolling contact. Wherein the driving block 23 is provided with a containing groove 231 for partially containing the bearing roller 28, a pin shaft parallel to the blanking driving shaft 21 is arranged in the containing groove 231, and the bearing roller 28 is arranged on the pin shaft.

When the cam 22 rotates, the blanking slide block 25 can be pushed to do reciprocating linear motion through the thrust shaft 27 through the cooperation of the springs, the blanking slide block 25 is provided with the blanking block 26, and the blanking block 26 and the blanking function enable blanking to fall into the blanking chute 251 through the blanking port 261 and slide down, so that leather blanking can be smoothly achieved, and when the aperture needs to be changed, only a punching needle head needs to be replaced, so that the applicability is strong.

In order to avoid that the blanking device is separately provided with a power source, the blanking box 20 is arranged side by side with the lower shaft box, and the blanking driving shaft is an extension part of the lower shaft, so that only the lower shaft of a conventional embroidery machine is required to be lengthened, or the length of the lower shaft is unchanged, the blanking driving shaft is connected with the lower shaft through a coupler, and when the blanking driving shaft and the lower shaft are required to be stacked into a combined machine, the blanking driving shaft and the lower shaft are completely coaxial and have no interference.

While the invention has been described in terms of specific embodiments, it will be appreciated by those skilled in the art that the invention is not limited to the specific embodiments described above. Any modifications which do not depart from the functional and structural principles of the present invention are intended to be included within the scope of the appended claims.

Claims (10)

1. The utility model provides a multifunctional combination machine that puncher and embroidery machine are constituteed, includes the faller that has the faller hole, locates the aircraft nose of faller top, locates doffer and the lower axle box of faller below, the aircraft nose includes needle bar drive arrangement, needle bar drive arrangement is including having the needle bar of top dead center and bottom dead center, the needle bar driver of drive needle bar motion, the needle bar driver includes the needle bar drive piece, the needle bar drive piece is equipped with the draw-in groove with bottom dead center complex, its characterized in that: the needle bar driving device further comprises a needle bar pressing bar assembly which is used for pressing the needle bar downwards when the needle is lifted, so that the lower dead center corresponds to the clamping groove in height, the needle bar pressing bar assembly comprises a needle bar pressing bar which is used for pressing down the upper dead center and a driving piece which is used for driving the needle bar pressing bar to act, a guide hole matched with the needle bar pressing bar is formed in an upper cross beam of the needle bar frame, the blanking device comprises a blanking box, a blanking driver arranged on the blanking box, a thrust shaft driven by the blanking driver and a blanking block which is driven by the thrust shaft to slide below the needle plate hole, and the blanking block is provided with a blanking hole which is matched with the needle plate hole to guide blanking to fall.

2. The multifunctional combined machine consisting of a perforating machine and an embroidering machine according to claim 1, wherein: the needle bar compression bar is connected with a reset spring which can reset upwards after the compression plate is released from the upper dead point.

3. The multifunctional combined machine consisting of a perforating machine and an embroidering machine according to claim 2, wherein: the bottom of the needle bar compression bar is provided with a compression plate which is pressed with the upper dead point.

4. A multifunctional combined machine consisting of a perforating machine and an embroidering machine according to claim 3, characterized in that: the needle pressing rod assembly further comprises a swinging shaft and a swinging rod rotatably connected to the swinging shaft, and the needle pressing rod is driven by the swinging rod.

5. The multifunctional combined machine consisting of a perforating machine and an embroidering machine according to claim 4, wherein: the needle pressing rod assembly further comprises an air cylinder, and the swing rod is driven to rotate through the extension and retraction of a piston rod of the air cylinder.

6. The multifunctional combined machine consisting of a perforating machine and an embroidering machine according to claim 5, wherein: the swing rod is provided with a rear protruding portion protruding backwards, the piston rod is connected with a top plate, and the rear protruding portion is connected with a rolling bearing in rolling fit with the top plate.

7. The multifunctional combined machine consisting of the perforating machine and the embroidery machine according to any one of claims 1 to 6, wherein: the blanking device further comprises a driving block and a blanking sliding block, wherein the blanking block is arranged above the blanking sliding block, one end of the thrust shaft is fixed with the driving block, and the other end of the thrust shaft is fixed with the blanking sliding block.

8. The multifunctional combined machine consisting of a perforating machine and an embroidering machine according to claim 7, wherein: the blanking driver comprises a blanking driving shaft and a cam arranged on the blanking driving shaft, wherein the thrust shaft is connected with a spring for driving the thrust shaft to axially move along the cam, and a bearing roller abutting against the cam is rotatably arranged on the driving block.

9. The multifunctional combined machine consisting of a perforating machine and an embroidering machine according to claim 7, wherein: the blanking slider is equipped with the blanking chute that guides blanking landing in blanking mouth below correspondence.

10. The multifunctional combined machine consisting of a perforating machine and an embroidering machine according to claim 8, wherein: the blanking box is arranged side by side with the lower axle box, the lower axle box is provided with a lower axle, and the blanking driving shaft is an extension part of the lower axle or is connected with the lower axle through a coupler.

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