CN114892348B

CN114892348B - Processing device for needle-punched non-woven wrapping layer of hemostatic air bag

Info

Publication number: CN114892348B
Application number: CN202210452854.8A
Authority: CN
Inventors: 王兴松; 左小庆; 田梦倩
Original assignee: Southeast University
Current assignee: Southeast University
Priority date: 2022-04-27
Filing date: 2022-04-27
Publication date: 2023-02-24
Anticipated expiration: 2042-04-27
Also published as: CN114892348A

Abstract

The invention discloses a processing device for a needling non-woven wrapping layer of a hemostatic airbag, which comprises a processing model, a rotating device, a moving device, a swinging device and a needling device, wherein the processing model comprises a TPU outer membrane, a granular plastic filler, a spunlace non-woven fabric substrate and silk, the granular plastic filler is filled in the TPU outer membrane to form a shape which is the same as the shape of the hemostatic airbag, the spunlace non-woven fabric substrate is uniformly laid on the surface of the TPU outer membrane, the silk is wrapped on the spunlace non-woven fabric substrate, the rotating device is connected with and drives the processing model to rotate, the moving device is connected with and drives the swinging device to move at a spatial position, the swinging device is connected with the needling device, the needling device can swing left and right by taking the swinging device as a circle center, and the needling device comprises a felting needle and a cam reciprocating device which are connected with each other. By adopting the processing device for the needle-punched non-woven wrapping layer of the hemostatic air bag, the requirements on the uniformity and the integrity of the non-woven wrapping layer of the hemostatic air bag can be ensured while fine needle-punching processing is carried out on the non-woven wrapping layer.

Description

Processing device for needle-punched non-woven wrapping layer of hemostatic air bag

Technical Field

The invention relates to the technical field of non-woven fabric processing, in particular to a processing device for a needle-punched non-woven wrapping layer of a hemostatic air bag.

Background

The main aim of wound emergency treatment is to temporarily control bleeding, isolate the wound from the outside and avoid infection so as to achieve better hemostasis effect and form good wound surface, the rapid and effective hemostasis becomes the most critical link in rescuing patients, and the high efficiency and the multiple functionality of the hemostasis material can reduce casualties. The fibroin has good biocompatibility, no toxicity or stimulation and small inflammatory reaction, and is an excellent surface coating material of the hemostatic air bag for wound emergency treatment. The main current preparation method of the hemostatic air bag wrapping layer is a method of using glue paste or needling. The silk is adhered and covered on the surface layer of the hemostatic air bag by adopting an adhesive method, but the uniformity and the completeness of the finished product prepared by the method cannot be guaranteed, the biological safety is considered, the requirement on the quality of the adhesive is high, and the pollution is easily caused in the preparation process.

The traditional principle of adopting the needle-punched non-woven fabric is that a fiber web conveyed by a web forming device enters a space between a web peeling plate and a web supporting plate through an input roller for needle-punching reinforcement, a spindle motor rotates to drive eccentric rotation, a connecting rod swings under the action of an eccentric wheel, a needle plate connected with the connecting rod and a needle bar reciprocate up and down, at the moment, the fluffy fiber web between the web peeling plate and the web supporting plate brings upper-layer fibers of the fiber web to a lower layer under the action of a barb on the needle bar, and the reciprocating is the reinforcement process of the whole fiber web. According to the traditional needle-punched non-woven fabric process, roller ways are placed at the input end and the output end of a needle-punching machine, so that the transverse movement of fibers to be processed is realized, and the purposes of surface leveling and continuous processing are achieved. But hemostasis gasbag's shape is comparatively special, and the integrality and the laminating nature of parcel layer can't be guaranteed to the slice non-woven fabrics, and current acupuncture non-woven fabrics processingequipment can't be applicable to the processing of hemostasis gasbag surface acupuncture non-woven fabrics parcel layer.

Disclosure of Invention

The invention aims to provide a device for processing a needle-punched non-woven wrapping layer of a hemostatic air bag aiming at the defects of the prior art, which can ensure the requirements of uniformity and integrity while carrying out fine needle-punching processing on the non-woven wrapping layer of the hemostatic air bag.

In order to solve the technical problems, the invention provides the following technical scheme:

the utility model provides a needle-punched non-woven wrapping layer processingequipment of hemostasis gasbag which characterized in that: including processing model, rotary device, mobile device, pendulous device and acupuncture device, the processing model includes TPU adventitia, granule plastics filler, water thorn non-woven fabrics basement and silk, granule plastics filler fill in the TPU adventitia, form the shape the same with hemostasis gasbag appearance, water thorn non-woven fabrics basement is evenly laid the surface of TPU adventitia, the silk parcel is on water thorn non-woven fabrics basement, rotary device connects and drives the processing model rotation, mobile device connects and drives swing device removes at spatial position, swing device connects acupuncture device, acupuncture device can use swing device as the centre of a circle horizontal hunting, acupuncture device includes interconnect's felting needle and cam reciprocating device, cam reciprocating device can drive the felting needle and be in accomplish the acupuncture processing on the processing model on the non-woven wrapping layer, the acupuncture direction of felting needle is perpendicular mutually with the tangent line of processing model processing point all the time.

Furthermore, the rotating device comprises a rotating motor, a model fixing shaft, a guide wheel seat and a bearing seat, the model fixing shaft is arranged on a central axis of the machining model in a penetrating mode, two ends of the model fixing shaft are supported by the guide wheel seat and the bearing seat respectively, the output end of the rotating motor is connected with the model fixing shaft, and the rotating motor can drive the machining model to rotate through the model fixing shaft.

Furthermore, the moving device adopts a four-axis gantry guide rail structure and comprises two X-axis guide rails which are arranged on the base in parallel, a Y-axis guide rail which is vertically arranged on the X-axis guide rail and a Z-axis guide rail which is vertically arranged on the Y-axis guide rail, and the swinging device is connected with the Z-axis guide rail through a sliding block.

Further, the pendulous device includes swing motor, fixed copper post, planetary reducer, bearing and connecting plate, swing motor connects on the slider, the bearing passes through fixed copper post is connected on the slider, and swing motor's output shaft process wear to establish on the bearing behind the planetary reducer and connect the connecting plate, the connecting plate can be rotatory under swing motor's drive, the cam reciprocating device of acupuncture device installs on the connecting plate.

Furthermore, the pricking pin on the pricking device is connected to the cam reciprocating device through the pricking pin clamp, and the cam reciprocating device is driven by the stepping motor.

Compared with the prior art, the invention has the beneficial effects that: 1. use the model that can fill as the auxiliary machining, the acupuncture device carries out meticulous processing under four-axis moving platform drives, can guarantee its degree of consistency and integrity requirement when carrying out meticulous acupuncture processing to the non-woven fabrics parcel layer of hemostasis gasbag, and the device can carry out the modularization transformation according to the processing requirement, has reduced the processing degree of difficulty when realizing guaranteeing the precision, improves machining efficiency. 2. The mutual cooperation between the moving device, the swinging device and the needling device can ensure that the needling direction of the felting needle is always vertical to the tangential direction of a processing point of a processing model, and the needling process is completed by the intersection of the rotating device and the needling device.

Drawings

FIG. 1 is a schematic view of the overall structure of an embodiment of the present invention;

FIG. 2 is a diagram illustrating a mobile device according to an embodiment of the present invention;

FIG. 3 is a schematic structural diagram of a rotating device according to an embodiment of the present invention;

FIG. 4 is a schematic structural diagram of a swing apparatus according to an embodiment of the present invention;

FIG. 5 is a schematic structural diagram of a needling apparatus according to an embodiment of the present invention;

FIG. 6 is a schematic diagram illustrating a structural change of a processing model according to an embodiment of the present invention;

FIG. 7 is a schematic view showing a positional relationship between a needling apparatus and a processing model in the needling process according to the embodiment of the present invention;

wherein: 1-processing a model, 2-rotating device, 3-moving device, 4-swinging device, 5-needling device, 12-TPU outer membrane, 13-particle plastic filler, 14-spunlace non-woven fabric substrate, 15-silk, 16-non-woven wrapping layer, 21-rotating motor, 22-model fixed shaft, 23-guide wheel seat, 24-bearing seat, 31-base, 32-X shaft guide rail, 33-Y shaft guide rail, 34-Z shaft guide rail, 35-sliding block, 36-connecting rod, 41-swinging motor, 42-fixed copper column, 43-planetary reducer, 44-bearing, 45-connecting plate, 51-felting needle, 52-cam reciprocating device, 53-felting needle clamp and 54-stepping motor.

Detailed Description

For the understanding of the present invention, the following detailed description will be given with reference to the accompanying drawings, which are provided for the purpose of illustration only and are not intended to limit the scope of the present invention.

Fig. 1-7 show a specific embodiment of a processing device for a needle-punched non-woven wrapping layer of a hemostatic air bag, which includes a processing model 1, a rotating device 2, a moving device 3, a swinging device 4 and a needle-punching device 5 as shown in fig. 1, wherein the processing model 1 includes a TPU outer film 12, a granular plastic filler 13, a spunlace non-woven fabric substrate 14 and silk 15, the granular plastic filler 13 is filled in the TPU outer film 12 to form a shape identical to the shape of the hemostatic air bag, the spunlace non-woven fabric substrate 14 is uniformly laid on the surface of the TPU outer film 12, the silk 15 is wrapped on the spunlace non-woven fabric substrate 14, the rotating device 2 is connected with and drives the processing model 1 to rotate, the moving device 3 is connected with and drives the swinging device 4 to move in a spatial position, the swinging device 4 is connected with the needle-punching device 5, the needle-punching device 5 can swing left and right around the swinging device 4, the needle-punching device 5 includes a needle 51 and a cam reciprocating device 52 which are connected with each other, the cam reciprocating device 52 can drive the needle 51 to complete needle-punching processing of the needle-punched non-woven wrapping layer 16 on the processing model 1, and the needle-punched point which is always perpendicular to the processing point of the processing model 1.

As shown in fig. 2, the moving device 3 adopts a four-axis gantry rail structure, and includes two X-axis rails 32 arranged in parallel on a base 31, a Y-axis rail 33 vertically arranged on the X-axis rail 32, and a Z-axis rail 34 vertically arranged on the Y-axis rail 33, and the swing device 4 is connected with the Z-axis rail 34 through a slider 35. The two X-axis guide rails 32 move synchronously through the connecting rods 36, the guide rails are installed through installation holes in the sliding blocks, and the guide rails are driven by stepping motors.

As shown in fig. 3 and 6, the rotating device 2 includes a rotating motor 21, a mold fixing shaft 22, a guide wheel seat 23 and a bearing seat 24, the mold fixing shaft 22 is inserted on the central axis of the machining mold 1, two ends of the mold fixing shaft 22 are respectively supported by the guide wheel seat 23 and the bearing seat 24, and an output end of the rotating motor 21 is connected with the mold fixing shaft 22. The cavity of the TPU outer membrane 12 is completely filled with the particle plastic filler 13 in the processing model 1, the outer layer of the TPU outer membrane 12 is wrapped by the spunlace non-woven fabric substrate 14, and the outer layer of the spunlace non-woven fabric substrate 14 is wrapped by the silk 15. After the machining model 1 is manufactured, the machining model 1 is placed on the rotating device 2 through the model fixing shaft 22 to be subjected to needling machining, and the rotating motor 21 drives the machining model 1 to rotate through the model fixing shaft 22.

As shown in fig. 4, the swing device 4 includes a swing motor 41, a fixed copper pillar 42, a bearing 44 and a connecting plate 45, the swing motor 41 is connected to the slider 35, the bearing 44 is connected to the slider 35 through the fixed copper pillar 42, an output shaft of the swing motor 41 passes through the planetary reducer 43 and then is inserted into the bearing 44 and connected to the connecting plate 45, the connecting plate 45 can be driven by the swing motor 41 to rotate, and the cam reciprocating device 52 of the acupuncture device 5 is installed on the connecting plate 45.

As shown in fig. 5, the needling device 5 is fixed as an actuator to a connecting plate 45 of the swing device 4 and performs reciprocating swing processing. The cam reciprocating device 52 is driven by a stepping motor 54, the needle clamp 53 is fixedly connected with the cam reciprocating device 52 through bolts, the needle clamp 53 is a device which can be quickly disassembled, and the requirements of different lengths, thicknesses and density of the needles 51 in the needle processing requirements can be met by replacing the needle clamp 53.

As shown in fig. 7, when the needling device 5 is driven by the moving device 3 to perform reciprocating swing processing along the warp of the processing model 1, the needling direction is always perpendicular to the processing point tangent of the processing model 1, the needling process is completed by the intersection of the rotating device 2 and the needling device 5, and the manufactured non-woven wrapping layer 16 is obtained by extracting the TPU outer film 12 and the particle plastic filler 13 from the processing model 1 after the needling process.

The specific implementation process of the above embodiment is as follows:

firstly, manufacturing a processing model: filling the TPU outer membrane 2 fully by using the particle plastic filler 13, uniformly paving the spunlace non-woven fabric substrate 14 on the outer layer of the TPU outer membrane 12, and wrapping the silk 15 on the outer layer of the spunlace non-woven fabric substrate 14. After the machining model 1 is manufactured, it is placed on the rotating device 2 by the model fixing shaft 22 and fixed. The mold fixing shaft 22 is supported at one end by a guide pulley seat 23 and at the other end by a bearing seat 24. The machining model 1 is driven by a rotating motor 21 and rotates about a model fixing shaft 22.

The needle clamp 53 is replaced according to different lengths, thicknesses and densities of the needle processing requirements, and the needle clamp 53 is fixedly connected with the cam reciprocating device 52 through bolts and driven by a stepping motor 54. The needle punching device 5 is fixed as an actuator to a connecting plate 45 of the swing device 4, and swing type needle punching processing is performed. The swinging device 4 is integrally fixed on a vertical Z-axis guide rail 34 of the moving device 3 adopting a four-axis gantry guide rail.

As shown in fig. 7, when the moving device 3 drives the needling device 5 to perform reciprocating swing processing along the warp of the processing model 1, the direction of the needle 51 is always perpendicular to the tangent of the processing point of the processing model 1, the needling process is completed by the intersection of the rotating device 2 and the needling device 5, and the manufactured non-woven wrapping layer 16 is obtained by extracting the TPU outer film 12 and the granular plastic filler 13 from the processing model 1 after the needling process. In which figure 6 shows the change of the machining model throughout the machining process. After the silk is processed and formed by needling, the filling particles with smaller particles and the TPU outer film layer are taken out in sequence, and a complete non-woven fabric wrapping layer is reserved. In the aspect of material selection, the bottom layer of parcel layer uses water thorn non-woven fabrics as the carrier, and the top layer adopts silk, uses the acupuncture mode to carry out along gasbag circumference processing, makes silk fibre entangle each other and connects and obtain non-woven fabrics parcel layer.

The basic shape of the filling model is obtained by adopting the TPU outer membrane in the scheme of processing the model, the manufacturing difficulty is lower compared with that of high-density sponge and the like, and meanwhile, the TPU has lower elasticity at normal temperature, so that the shape of the model can not deform greatly in the processing process. EPP plastic particles are selected for filling the interior, the foamed polypropylene material is a high-crystallization polymer with excellent performance, and the foamed polypropylene material becomes the environment-friendly novel compression-resistant buffering heat-insulating material which is the fastest to grow at present due to unique and superior performance. The EPP product has the advantages of excellent shock resistance and energy absorption performance and high recovery rate after deformation. The metal support net plate is adopted as a material substrate in the traditional non-woven fabric processing, but the processing difficulty of a metal net product under the condition of an ellipsoid shape of an air bag and the problem that the needling position is not fixed in the manufacturing process are considered, and EPP plastic particles are selected to ensure the rebound shape of a needled model and the convenience of filling and taking out. Because the EPP plastic particles are small in size and the outer membrane of the TPU layer is foldable, the integrity of the non-woven fabric wrapping layer cannot be influenced in the taking-out process. The special manufacturing process of the non-woven fabric ensures the strength and the weight characteristics of the non-woven fabric, and compared with the complexity of the traditional non-woven fabric process flow, the scheme can meet the process requirements of the air bag wrapping layer, simultaneously reduces the processing difficulty and improves the processing efficiency.

According to the manufacturing method of the needle-punched non-woven wrapping layer of the hemostatic air bag, the fillable model is used as auxiliary processing, the needle-punching device is driven by the four-axis moving platform to perform fine processing, the requirements on the uniformity and the integrity of the non-woven wrapping layer of the hemostatic air bag can be met while fine needle-punching processing is performed on the non-woven wrapping layer, the method can perform modular transformation according to the processing requirements, the processing difficulty is reduced while the accuracy is guaranteed, and the processing efficiency is improved.

The above embodiments are merely illustrative of the technical concept and structural features of the present invention, and are intended to be implemented by those skilled in the art, but the present invention is not limited thereto, and any equivalent changes or modifications made according to the spirit of the present invention should fall within the scope of the present invention.

Claims

1. The utility model provides a needle-punched non-woven wrapping layer processingequipment of hemostasis gasbag which characterized in that: comprises a processing model (1), a rotating device (2), a moving device (3), a swinging device (4) and a needling device (5), the processing model (1) comprises a TPU outer film (12), a particle plastic filler (13), a spunlace non-woven fabric substrate (14) and silk (15), the granular plastic filler (13) is filled in the TPU outer film (12) to form the shape same as the shape of the hemostatic air bag, the spunlace non-woven fabric substrate (14) is uniformly laid on the surface of the TPU outer film (12), the silk (15) is wrapped on the spunlace non-woven fabric substrate (14), the rotating device (2) is connected with and drives the processing model (1) to rotate, the moving device (3) is connected with and drives the swinging device (4) to move at a spatial position, the swing device (4) is connected with the acupuncture device (5), the acupuncture device (5) can swing left and right by taking the swing device (4) as a circle center, the acupuncture device (5) comprises a puncture needle (51) and a cam reciprocating device (52) which are connected with each other, the cam reciprocating device (52) can drive the felting needle (51) to complete the needling processing of the non-woven wrapping layer (16) on the processing model (1), the needling direction of the felting needle (51) is always vertical to the tangent line of the processing point of the processing model (1);

the rotating device (2) comprises a rotating motor (21), a model fixing shaft (22), a guide wheel seat (23) and a bearing seat (24), the model fixing shaft (22) penetrates through the central axis of the machining model (1), two ends of the model fixing shaft (22) are respectively supported by the guide wheel seat (23) and the bearing seat (24), the output end of the rotating motor (21) is connected with the model fixing shaft (22), and the rotating motor (21) can drive the machining model (1) to rotate through the model fixing shaft (22);

the moving device (3) adopts a four-axis gantry guide rail structure and comprises two X-axis guide rails (32) which are arranged on a base (31) in parallel, a Y-axis guide rail (33) which is vertically arranged on the X-axis guide rails (32) and a Z-axis guide rail (34) which is vertically arranged on the Y-axis guide rail (33), and the swinging device (4) is connected with the Z-axis guide rail (34) through a sliding block (35);

pendulous device (4) are including swing motor (41), fixed copper post (42), planetary reducer (43), bearing (44) and connecting plate (45), swing motor (41) are connected on slider (35), bearing (44) are passed through fixed copper post (42) are connected on slider (35), and the output shaft process of swing motor (41) wear to establish on bearing (44) and connect connecting plate (45) behind planetary reducer (43), and connecting plate (45) can be rotatory under the drive of swing motor (41), install on connecting plate (45) cam reciprocating device (52) of acupuncture device (5).

2. The apparatus for processing needle-punched non-woven covering of hemostatic balloon of claim 1, wherein: the needle (51) on the needling device (5) is connected to the cam reciprocating device (52) through a needle clamp (53), and the cam reciprocating device (52) is driven by a stepping motor (54).