CN210438937U

CN210438937U - Wire pulling mechanism of carbon fiber preform unilateral suturing device

Info

Publication number: CN210438937U
Application number: CN201921020735.5U
Authority: CN
Inventors: 董九志; 姬灵超; 陈云军; 腊鑫; 蒋秀明
Original assignee: Tianjin Polytechnic University
Current assignee: Tianjin Polytechnic University
Priority date: 2019-07-03
Filing date: 2019-07-03
Publication date: 2020-05-01
Anticipated expiration: 2029-07-03

Abstract

The utility model discloses an unilateral suturing device of carbon fiber preform dials line mechanism, the unilateral suturing device of supplementary carbon/carbon combined material three-dimensional preform accomplishes the production of sewing up of three-dimensional preform, including eccentric disc mechanism, crank rocker mechanism, dial line pendulum rod mechanism, bevel gear drive mechanism, eccentric disc mechanism, crank rocker mechanism, dial and rely on servo motor between the line pendulum rod mechanism three, synchronous belt drive mechanism and bevel gear drive mechanism transmission power, eccentric disc mechanism, crank rocker mechanism installs on the frame plate by the bearing frame constraint, dial line pendulum rod mechanism and install between eccentric disc mechanism and crank rocker mechanism, connect the two and provide power by the two and accomplish the line action of dialling, the crochet hook rate of crochet hook needle is reduced, stitch shaping efficiency has been improved.

Description

Wire pulling mechanism of carbon fiber preform unilateral suturing device

Technical Field

The utility model relates to an unilateral suturing device technical field especially relates to a unilateral suturing device of carbon fiber preform three-dimensional fabric shaping dials line mechanism, and three-dimensional combined material preform sewing processing production is accomplished to the crochet hook needle and the take-up needle among the main supplementary unilateral suturing device of this mechanism.

Background

The carbon/carbon composite material is a structural material developed in the last two decades, a member made of a three-dimensional fabric through later-stage curing treatment has excellent structural performance, the mechanical properties of the composite material in various aspects are obviously improved, and particularly the defect that the structural composite material is low in interlayer strength and easy to separate is fundamentally overcome, so that the carbon/carbon composite material is mainly used in the fields of aviation, aerospace, automobiles, medical treatment and new technologies at present. Three-dimensional fabric all adopts the manual weaving mode to carry out for a long time for three-dimensional fabric's shaping inefficiency, artifical intensity of labour are big, the uniformity of product is poor, along with the progress of scientific and technological, mechanical automation has generally obtained the application, adopts unilateral sewing up equipment to sew up production three-dimensional fabric not only can solve artifical low in efficiency, intensity big, the product uniformity subalternation problem of knitting, can also solve traditional bilateral sewing up equipment and only be limited to two-dimentional sewing up the limitation of object.

The invention patent 'a unilateral suture device' discloses the number: CN102899807A, which discloses a single-side sewing device, the device adopts single-side double-needle single-thread sewing technology, only uses the self-cooperation of two needles of the hook needle and the take-up needle to form a lock stitch, in the process of forming the single-side sewing stitch, the hook needle and the thread guide needle both reciprocate along the axial direction of the needle rod, the thread guide needle plays the role of guiding the thread through the sewing material and forming the thread loop, and the hook needle plays the role of hooking the thread loop back to the upper surface of the sewing material. The thread take-up lever is matched with thread feeding and thread tightening to finish a sewing cycle.

The invention discloses a method for forming unilateral suture stitches of a three-dimensional composite material prefabricated part, which is published under the No. CN102926137A, and introduces a method for forming unilateral suture stitches of a three-dimensional composite material prefabricated part, wherein the method comprises four steps, namely step 1, forming thread loops; step 2, hooking a loop; step 3, locking the wire loop; and 4, circulating action. The single-side sewing equipment sews from the upper surface (single side) of the processed object according to the stitch forming method, overcomes the problems that the double-side sewing in the traditional sewing technology has larger space requirement, the sewing equipment can not move, and large structural members, especially the structural members with complicated space shapes can not be processed, and has the characteristics of relatively simple structure, strong adaptability, wide application range, good flexibility and the like. The equipment and the stitch forming method have the defects that when a crochet hook is matched with a picking needle to take a thread loop to form a lock stitch, the crochet hook needs to penetrate a previous loop formed on the upper surface of a sewing material when penetrating the sewing material due to the requirement of stitch lock, the loop is tightened under the action of a thread taking mechanism after the crochet needle penetrates the sewing material, when the crochet hook hooks the loop to penetrate the sewing material to reach the upper surface of the sewing material in the next cycle, a needle hook is placed forwards (the advancing direction of a sewing path) to easily hook the previous loop, and if the previous loop is hooked, the sewing can not be continued.

Disclosure of Invention

The to-be-solved technical problem of the utility model is, change crochet hook needle hook orientation, increase and dial line mechanism, provide a line mechanism of dialling that is applicable to unilateral sewing device, supplementary unilateral sewing device stitch shaping, its compact structure, novel in design is reasonable, has reduced the crochet hook and has lost hook, wrong hook probability, and shaping is stabilized to supplementary stitch that can be better, avoids not enough among the existing equipment.

In order to solve the technical problem, the utility model discloses a technical scheme is: a wire shifting mechanism of a carbon fiber prefabricated body unilateral suturing device comprises an eccentric disc mechanism, a crank rocker mechanism, a wire shifting swing rod mechanism and a transmission mechanism, wherein the eccentric disc mechanism, the crank rocker mechanism and the wire shifting swing rod mechanism are arranged on a rear frame plate in a bound mode through bolts and bearing seats;

the transmission mechanism comprises a line hooking shaft, a line leading shaft, a line picking shaft and a servo motor, wherein synchronous belts are connected among the line hooking shaft, the line leading shaft, the line picking shaft and the servo motor, the servo motor provides power for the line hooking shaft, the line picking shaft and the line leading shaft, two ends of the line hooking shaft and the line picking shaft are respectively arranged on the front frame plate and the rear frame plate in a restraining mode through a bearing seat and a bearing, and the line leading shaft and the servo motor are both arranged on the front frame plate;

the eccentric disc mechanism comprises a first bevel gear, a driving shaft, a first bearing seat, a second bearing seat, an eccentric disc and a swing rod shaft seat, the crank and swing rod mechanism comprises a second bevel gear, a third bearing seat, a crank shaft rod, a fourth bearing seat, a crank, a connecting rod, a swing rod pin, a swing rod, a fifth bearing seat and a swing rod shaft, the wire shifting and swing rod mechanism comprises a universal coupling, a swing rod shaft, a swing rod transverse rod, a swing rod longitudinal rod, a wire shifting hook clamp and a wire shifting hook,

the driving shaft is connected with the hook wire shaft through a first bevel gear and powered by the hook wire shaft, the driving shaft drives the eccentric disc to do circular motion, the eccentric disc is provided with a swing rod shaft seat, the swing rod shaft seat is positioned on the eccentric disc in an eccentric device, the swing rod shaft seat and the eccentric disc form an eccentric mechanism, and the eccentric mechanism is driven by the driving shaft and drives the driving rod shaft seat to do circular motion;

the crank shaft lever is used for transmitting power through a second bevel gear by a take-up shaft, and the take-up shaft and the hook shaft are driven by a servo motor through a synchronous belt and a synchronous belt wheel; the crank shaft lever drives the crank to rotate and drives the rocker to swing in a small amplitude through the connecting rod;

the upper end of the swing rod shaft is submerged in the swing rod shaft seat and moves circularly along with the swing rod shaft seat, the lower end of the swing rod shaft is connected with a swing rod shaft of the crank-swing rod mechanism through a universal coupling and is circumferentially constrained so as to receive swinging motion transmitted by a swing rod, the universal coupling can smoothly superpose the circular motion and the swinging motion on the thread shifting swing rod, finally, the hook tip of the thread shifting hook in the thread shifting swing rod mechanism moves in an elliptic track, the thread shifting hook is matched with the thread hooking needle to shift a thread ring on the upper surface of a sewing material in the process of the elliptic track movement, and smooth locking of a stitch is realized.

The first bearing seat, the second bearing seat, the third bearing seat, the fourth bearing seat and the fifth bearing seat are fixed on the frame plate through pins and bolts.

The driving shaft is bound by a first bearing seat, a second bearing seat and a bearing; the crank shaft lever is bound by a third bearing seat, a fourth bearing seat and a bearing.

The utility model discloses sew up the in-process and sew up with the yarn, make three-dimensional fabric inside material unanimous, do not integrate into other materials, can guarantee to sew up the quality, improve the product uniformity.

Compared with the prior art, the beneficial effects of the utility model are that: the utility model relates to a three-dimensional fabric sewing device of carbon/carbon combined material has realized the stable hasp of unilateral suture stitch seam, and its line mechanism cooperation crochet hook of dialling that increases gets the wire loop, the effectual mistake hook probability that reduces the crochet hook, makes sewing work can go on smoothly, can directly sew up with the carbon fiber after increasing string mechanism simultaneously, has guaranteed the sewing quality, has improved production efficiency, very big improvement the product uniformity, and the practicality is strong, convenient to popularize and use.

Drawings

The advantages and mode of realisation of the invention will become more apparent hereinafter by describing in detail the invention with reference to the attached drawings, wherein the content shown in the drawings is only for explaining the invention, without constituting any limitation to the meaning of the invention, in which:

FIG. 1 is a schematic view of the overall structure of the single-side suturing device of the present invention

FIG. 2 is a schematic structural view of the thread-pulling mechanism of the single-side sewing device of the present invention

FIG. 3 is a front view of the thread-shifting mechanism of the single-side suturing device of the present invention

FIG. 4 is a side view of the thread-pulling mechanism of the single-side sewing device of the present invention

FIG. 5 is a top view of the thread-pulling mechanism of the single-side suturing device of the present invention

FIG. 6 is a schematic structural view of the eccentric disc mechanism of the thread-pulling mechanism of the single-side sewing device of the present invention

FIG. 7 is a schematic structural view of the crank rocker mechanism of the thread pulling mechanism of the single-side sewing device of the present invention

FIG. 8 is a schematic structural view of the thread-shifting swing link mechanism of the thread-shifting mechanism of the single-side sewing device of the present invention

FIG. 9 is a schematic structural view of the swing rod shaft seat of the thread-shifting mechanism of the single-side sewing device of the present invention

FIG. 10 is a schematic view of the stitch forming process of the thread-pulling mechanism of the single-side sewing device of the present invention

FIG. 11 is a schematic view of the thread-pulling mechanism hook-pulling and thread-hooking needle cooperating process of the single-side suturing device of the present invention

FIG. 12 is a schematic view of the movement track of the wire-pulling mechanism of the single-side suturing device

In the figure:

1. eccentric disc mechanism 2 and thread hooking shaft

3. Rear frame plate 4 and front frame plate

5. Servo motor 6, lead wire axle

7. Take-up shaft 8, pressure plate

9. Thread guide needle 10, crochet hook

11. Crank rocker mechanism 12 and wire-pulling swing rod mechanism

101. First bevel gear 102, drive shaft

103. First bearing seat 104, second bearing seat

105. Crank disc 106, swing rod shaft seat

1101. Second bevel gear 1102 and third bearing seat

1103. Crank shaft 1104 and fourth bearing seat

1105. Crank 1106, connecting rod

1107. Rocker pin 1108, rocker

1109. Fifth bearing 1110, rocker shaft

1201. Universal joint 1202 and swing rod shaft

1203. Swing rod cross rod 1204 and swing rod longitudinal rod

1205. Hook clip 1206 and wire hook

Detailed Description

The present invention will be described in further detail with reference to the following detailed description.

As shown in fig. 1 to 12, a wire shifting mechanism of a carbon fiber preform single-side stitching device comprises an eccentric disc mechanism 1, a crank rocker mechanism 11, a wire shifting rocker mechanism 12 and a transmission mechanism, wherein the eccentric disc mechanism 1, the crank rocker mechanism 11 and the wire shifting rocker mechanism 12 are mounted on a rear frame plate 3 in a binding manner through bolts and bearing seats; the transmission mechanism comprises a hook spool 2, a lead spool 6, a take-up spool 7 and a servo motor 5, wherein synchronous belts are connected among the hook spool 2, the lead spool 6, the take-up spool 7 and the servo motor 5, the servo motor 5 provides power for the hook spool 2, the take-up spool 7 and the lead spool 6, two ends of the hook spool 2 and two ends of the take-up spool 7 are respectively bound and installed on the front frame plate 4 and the rear frame plate 3 through a bearing seat and a bearing, and the lead spool 6 and the servo motor 5 are both installed on the front frame plate 4;

the eccentric disc mechanism 1 comprises a first bevel gear 101, a driving shaft 102, a first bearing seat 103, a second bearing seat 104, an eccentric disc 105 and a rocker shaft seat 106, the crank rocker mechanism 11 comprises a second bevel gear 1101, a third bearing seat 1102, a crank shaft rod 1103, a fourth bearing seat 1104, a crank 1105, a connecting rod 1106, a rocker pin 1107, a rocker 1108, a fifth bearing seat 1109 and a rocker shaft 1110, the wire-pulling rocker mechanism 12 comprises a universal coupling 1201, a rocker shaft 1202, a rocker cross rod 1203, a rocker longitudinal rod 1204, a wire-pulling hook 1205 and a wire-pulling hook 1206,

the driving shaft 102 is linked with the hook wire shaft 2 through a first bevel gear 101 and powered by the hook wire shaft 2, the driving shaft 102 drives an eccentric disc 105 to do circular motion, a swing rod shaft seat 106 is arranged on the eccentric disc 105, the swing rod shaft seat 106 is positioned on an eccentric device on the eccentric disc 105, the swing rod shaft seat and the eccentric disc 105 form an eccentric mechanism, and the eccentric mechanism is driven by the driving shaft 102 and drives a driving lever shaft seat to do circular motion;

the crank shaft 1103 is driven by the take-up shaft 7 through a second bevel gear 1101, and the take-up shaft 2 and the take-up shaft 7 are driven by the servo motor 5 through a synchronous belt and a synchronous pulley; the crank shaft 1103 drives the crank 1105 to rotate and drives the rocker 1108 to swing with a small amplitude through the connecting rod 1106;

the upper end of the swing rod shaft 1202 is submerged in the swing rod shaft seat 106 and moves circularly along with the swing rod shaft seat 106, the lower end of the swing rod shaft 1202 is connected with a swing rod shaft 1110 of the crank-swing rod mechanism 11 through a universal coupling 1201 and is circumferentially constrained so as to receive swinging motion transmitted by a swing rod 1108, the universal coupling 1201 can smoothly overlap the circular motion and the swinging motion on the thread shifting swing rod, finally the hook tip of the thread shifting hook 1206 in the thread shifting swing rod mechanism 12 moves in an elliptical track, and the thread shifting hook 1206 is matched with the thread hooking needle 10 to shift a thread loop on the upper surface of a sewing material in the elliptical track movement process, so that smooth locking of a stitch is realized.

The first bearing seat 103, the second bearing seat 104, the third bearing seat 1102, the fourth bearing seat 1104 and the fifth bearing seat 1109 are all fixed on the frame plate through pins and bolts.

The drive shaft 102 is constrained by a first bearing housing 103, a second bearing housing 104 and bearings; the crank shaft 1103 is constrained by a third bearing housing 1102, a fourth bearing housing 1104, and bearings.

The thread pulling hook is matched with the thread hooking needle and the thread guiding needle to finish the sewing process, and the specific implementation form is as follows:

step 1: forming a thread loop, wherein a hook needle of a thread hooking needle is placed backwards (opposite to the advancing direction of a sewing path) in the sewing process, a thread leading needle penetrates obliquely with yarns and penetrates through the sewing material to reach the lower surface of the sewing material when the sewing is started, and the thread hooking needle penetrates the sewing material vertically after the thread leading needle with a certain phase difference;

step 2: a thread hooking and taking ring, which rises back when the thread guiding needle reaches the lower limit position, wherein in the process of rising back, the friction force between the yarn and the sewing material hinders the yarn to move along with the needle rod, so that part of the yarn is gathered to form a thread loop on the lower surface of the sewing material, at the moment, the thread hooking needle penetrates into the thread loop and continues to descend for a certain distance, the yarn thread loop slides along the needle rod of the thread hooking needle under the driving of the thread guiding needle, the thread hooking needle rises back after descending to the limit position, when the needle hook of the thread hooking needle is about to reach the lower surface of the sewing material, the yarn thread loop slides into the needle hook along the needle rod, and;

and step 3: the thread shifting hook swings around the needle to the outer side of the needle rod and presses the outer thread ring when the thread hooking needle is about to reach the upper limit position, and the thread hooking needle rises a small distance at the moment, and the thread shifting hook shifts the thread ring back to the inner side of the needle rod from the lower side of the needle hook;

and 4, step 4: and locking the thread loop, descending after the thread hooking needle reaches the upper limit position, and penetrating the needle rod of the thread hooking needle into the thread loop pulled back by the thread pulling hook in the descending process, so that when the thread hooking needle takes off the thread loop with a circulating action, the thread loop can be pulled out from the previous thread loop, and the lock catch stitch with the thread loops buckled with each other is realized.

The utility model relates to a three-dimensional fabric sewing device of carbon/carbon combined material has realized the stable hasp of unilateral suture stitch seam, and its line mechanism cooperation crochet hook of dialling that increases gets the wire loop, the effectual mistake hook probability that reduces the crochet hook, makes sewing work can go on smoothly, can directly sew up with the carbon fiber after increasing string mechanism simultaneously, has guaranteed the sewing quality, has improved production efficiency, very big improvement the product uniformity, and the practicality is strong, convenient to popularize and use.

The embodiments of the present invention have been described in detail, but the description is only for the preferred embodiments of the present invention and should not be construed as limiting the scope of the present invention. All equivalent changes and modifications made within the scope of the present invention should be covered by the present patent.

Claims

1. The utility model provides a unilateral suturing device of carbon fiber preform line mechanism that dials which characterized in that: the wire drawing and swinging mechanism comprises an eccentric disc mechanism (1), a crank and rocker mechanism (11), a wire drawing and swinging rod mechanism (12) and a transmission mechanism, wherein the eccentric disc mechanism (1), the crank and rocker mechanism (11) and the wire drawing and swinging rod mechanism (12) are arranged on a rear frame plate (3) through bolts and bearing seats; the transmission mechanism comprises a hook spool (2), a lead spool (6), a take-up spool (7) and a servo motor (5), synchronous belts are connected among the hook spool (2), the lead spool (6), the take-up spool (7) and the servo motor (5), the servo motor (5) provides power for the hook spool (2), the take-up spool (7) and the lead spool (6), two ends of the hook spool (2) and the take-up spool (7) are respectively installed on a front frame plate (4) and a rear frame plate (3) through a bearing seat and a bearing, and the lead spool (6) and the servo motor (5) are both installed on the front frame plate (4); the eccentric disc mechanism (1) comprises a first bevel gear (101), a driving shaft (102), a first bearing seat (103), a second bearing seat (104), an eccentric disc (105) and a swing rod shaft seat (106), the crank and rocker mechanism (11) comprises a second bevel gear (1101), a third bearing seat (1102), a crank shaft rod (1103), a fourth bearing seat (1104), a crank (1105), a connecting rod (1106), a rocker pin (1107), a rocker (1108), a fifth bearing seat (1109) and a rocker shaft (1110), the wire shifting and rocker mechanism (12) comprises a universal coupling (1201), a rocker shaft (1202), a swing rod cross rod (1203), a swing rod longitudinal rod (1204), a wire shifting hook clamp (1205) and a wire shifting hook (1206), the driving shaft (102) is linked with a hook shaft (2) through the first bevel gear (101) and powered by the hook shaft (2), and the driving shaft (102) drives the eccentric disc (105) to do circular motion, the eccentric disc (105) is provided with a swing rod shaft seat (106), and the swing rod shaft seat (106) is positioned on the eccentric disc (105) in an eccentric device; the crank shaft rod (1103) transmits power from the take-up shaft (7) through a second bevel gear (1101), the crank shaft rod (1103) drives the crank (1105) to rotate and drives the rocker (1108) to swing through the connecting rod (1106); the upper end of the swing rod shaft (1202) is submerged into the swing rod shaft seat (106) and moves circularly along with the swing rod shaft seat (106), and the lower end of the swing rod shaft (1202) is connected with a swing rod shaft (1110) of the crank-rocker mechanism (11) through a universal coupling (1201) and is circumferentially constrained.

2. The carbon fiber preform unilateral suturing device thread pulling mechanism of claim 1, wherein: the first bearing seat (103), the second bearing seat (104), the third bearing seat (1102), the fourth bearing seat (1104) and the fifth bearing seat (1109) are fixed on the frame plate through pins and bolts.

3. The carbon fiber preform unilateral suturing device thread pulling mechanism of claim 1, wherein: the drive shaft (102) is constrained by a first bearing block (103), a second bearing block (104) and a bearing; the crank shaft (1103) is constrained by a third bearing seat (1102), a fourth bearing seat (1104), and bearings.