CN216864509U - Suture assisting device - Google Patents

Abstract

The utility model provides a sewing auxiliary device for assisting in sewing a hybrid fan blade, wherein the hybrid fan blade is provided with a part to be sewn and a non-sewn part, a first support and a second support are arranged at intervals along the thickness direction, two ends of each support rod are respectively in threaded connection with the peripheral parts of the two supports, each ejector rod is provided with a screw rod section and a rod head, a plurality of first ejector rods are in threaded connection with the central part of the first support through the screw rod section and are distributed in the central part of the first support, a plurality of second ejector rods are in threaded connection with the central part of the second support through the screw rod section and are distributed in the central part of the second support, and the rod heads of the first ejector rods and the second ejector rods respectively tightly prop against the non-sewn part of the hybrid fan blade from two sides of the hybrid fan blade in the thickness direction, so that the part to be sewn of the hybrid fan blade is exposed for sewing. The sewing aid can assist in sewing hybrid fan blades of different sizes and configurations.

Description

Suture assisting device

Technical Field

The present invention relates to a suture assisting device.

Background

Hybrid fan blades, which may also be referred to as hybrid construction fan blades, are composed of composite materials such as carbon fiber composite materials and metallic materials such as titanium alloys. The metal material and the composite material can be connected in a glue layer mode, but the connection mode has high requirements on the mechanical property of the glue layer, and particularly when the blade is impacted, the damage such as degumming, delamination and the like is easy to occur, so that the metal material and the composite material are separated.

The problem of connecting metal materials and composite materials can be solved by means of sewing. The suture connection interface has high strength, and the interface strength can be improved by selecting different sutures, so that the selectivity is higher. The titanium alloy and the composite material in the fan blade with the hybrid structure are connected together in a sewing mode, so that the fan blade with the hybrid structure can be formed.

For hybrid fan blades, the composite preform and the metal material need to be joined together by sewing taking into account the fixation between the different materials. However, hybrid fan blades exist in a variety of sizes and configurations, and the profiles are typically of curved configuration, thus providing a versatile suture assist device that can assist in suturing the hybrid fan blades.

SUMMERY OF THE UTILITY MODEL

The utility model aims to provide a suture assisting device which can assist in suturing hybrid fan blades of different sizes and different configurations.

The utility model provides a sewing auxiliary device for assisting in sewing a hybrid fan blade, wherein the hybrid fan blade comprises a part to be sewn and a non-sewn part and also has a thickness direction, the sewing auxiliary device comprises two supports, a plurality of support rods and a plurality of ejector rods, each support comprises a central part and an outer peripheral part arranged on the periphery of the central part, the two supports are a first support and a second support which are arranged at intervals along the thickness direction, two ends of each support rod are respectively in threaded connection with the outer peripheral parts of the two supports, each ejector rod is provided with a screw rod section and a rod head connected to one end of the screw rod section, the plurality of ejector rods comprise a plurality of first ejector rods and a plurality of second ejector rods, the plurality of first ejector rods are in threaded connection with the central part of the first support through the screw rod section and are distributed in the central part of the first support, and the plurality of second ejector rods are in threaded connection with the central part of the second support through the screw rod section and are distributed in the middle of the second support And a core part, wherein the rod heads of the first ejector rods and the rod heads of the second ejector rods respectively push the non-sewing parts of the hybrid fan blades from two sides of the hybrid fan blades in the thickness direction, so that the parts to be sewn of the hybrid fan blades are exposed for sewing.

In one embodiment, the head of each carrier rod is dimensioned to allow the head to pass through a threaded bore that mates with the screw section.

In one embodiment, each of the holders is a plate member, a central portion of which is provided with a plurality of adjustment screw holes for engagement with the screw section of the carrier rod, and an outer peripheral portion of which is provided with a plurality of mounting screw holes for screw engagement with one end of the support rod.

In one embodiment, the first lift pins and the second lift pins are aligned one by one in a thickness direction.

In one embodiment, the first lift pin and the second lift pin are arranged to be offset in a thickness direction.

In one embodiment, the hybrid fan blade has a spanwise direction and a chordwise direction, and the first ejector pins and the second ejector pins are each uniformly distributed along both the spanwise direction and the chordwise direction.

In one embodiment, the head of each carrier rod comprises a polished rod section and a head, the head being connected to one end of the screw section by the polished rod section.

In one embodiment, the head of each carrier rod is made of a rubber material.

In one embodiment, the thickness direction of the hybrid fan blade is the same as the vertical direction, the first ejector rod and the second ejector rod are respectively positioned at the upper side and the lower side, and the rod head of the first ejector rod and the rod head of the second ejector rod respectively tightly press against the pressure surface and the suction surface of the hybrid fan blade.

In one embodiment, the suture assisting device further comprises a supporting platform, the supporting platform comprises a concave hole and a table board arranged around the concave hole, the lower end of each supporting rod penetrates out of the outer peripheral part of the second support positioned on the lower side and is supported on the table board, and the concave hole avoids the screw section of the second ejector rod to penetrate out of the rod end of the central part of the second support.

Among the above-mentioned auxiliary device that sews up, the both ends of bracing piece respectively with two support threaded connection, therefore can conveniently adjust two positions of support on the bracing piece, also can conveniently adjust the space of placing when mixing fan blade sews up, simultaneously, the ejector pin that lies in mixing fan blade both sides in the thickness direction distributes in the support through threaded connection, therefore can freely adjust the distance between each ejector pin and the mixing fan blade in a flexible way, therefore can construct different blade profiles, will mix the fan blade top tightly from both sides, therefore can assist and sew up the mixed fan blade of different sizes, different configurations, and, the above-mentioned auxiliary device that sews up can also be convenient for sew up the mixed structure fan blade of different sections, different positions. In addition, among the above-mentioned sewing auxiliary device, the bracing piece of adjusting the space of placing is located the periphery side of each ejector pin of structure profile, not only is convenient for adjust the operation, also makes whole structure more stable, and the whole device structure is simple, low cost.

Drawings

The above and other features, properties and advantages of the present invention will become more apparent from the following description taken in conjunction with the accompanying drawings and examples, in which:

FIG. 1 is a perspective view illustrating a suture assist device assisting in suturing a hybrid fan blade.

FIG. 2 is a cross-sectional view illustrating one state of a suture assist device assisting in suturing a hybrid fan blade.

FIG. 3 is a cross-sectional view illustrating another state in which the suture assist device assists in suturing the hybrid fan blade.

Fig. 4 is a perspective view exemplarily showing the suture assisting device.

Fig. 5 is a perspective view exemplarily showing the stand.

Fig. 6 is a perspective view exemplarily showing the jack.

Detailed Description

The present invention will be further described with reference to the following detailed description and the accompanying drawings, wherein the following description sets forth further details for the purpose of providing a thorough understanding of the present invention, but it is apparent that the present invention can be embodied in many other forms other than those described herein, and it will be readily apparent to those skilled in the art that the present invention may be embodied in many different forms without departing from the spirit or scope of the utility model.

For example, a first feature described later in the specification may be formed over or on a second feature, and may include embodiments in which the first and second features are formed in direct contact, and may also include embodiments in which additional features are formed between the first and second features, such that the first and second features may not be in direct contact. Further, when a first element is described as being coupled or coupled to a second element, the description includes embodiments in which the first and second elements are directly coupled or coupled to each other, as well as embodiments in which one or more additional intervening elements are added to indirectly couple or couple the first and second elements to each other.

Large-size and light-weight fan blades have been one of the key technologies of turbofan engines with large bypass ratios. The types of light weight fan blades of turbofan engines that have been successfully operated at present include titanium alloy hollow fan blades from the R & R company and composite-titanium alloy shrouded fan blades from the GE company. The hollow rate of the former reaches 40%, and the hollow rate of the latter reaches more than 60%. The composite material has the characteristics of small density, high strength and the like, the light metal represented by titanium alloy also has the characteristic of high specific strength, and the composite material and the metal material are combined together to form the fan blade, so that the fan blade has the characteristics of good weight reduction effect and high strength, and can meet the requirement of bird impact resistance. The lightweight fan blade becomes the mainstream proposal for developing the lightweight fan blade with large bypass ratio by each large engine company.

The hybrid fan blade, such as the fan blade with the titanium alloy composite material hybrid structure, has the advantages similar to the fan blade with the composite material, the whole fan blade is light in weight and has the capability of resisting bird impact, meanwhile, the metal core of the hybrid structure, such as the titanium alloy core plate, is simpler in processing technology, and can also adopt a 3D printing technology, and the fan blade has a larger design space. Fig. 2 and 3 illustrate an exemplary hybrid fan blade.

Referring to fig. 2, an exemplary hybrid fan blade 20 may have a composite trailing edge portion 30 made of a composite material, such as a resin-based carbon fiber composite, may also have a metallic leading edge portion 40 made of a metallic material, such as a titanium alloy, and may also have a hybrid blade portion 50 with the composite material on both sides sandwiching the metallic material in the middle. In other words, in the exemplary hybrid fan blade 20 of FIG. 2, the composite material generally forms a Y-shaped structure that opens toward the leading edge side, while the metallic material generally forms an umbrella structure that protrudes toward the trailing edge side, and the umbrella stem of the umbrella structure formed of the metallic material is inserted into the opening of the Y-shaped structure formed of the composite material. When the metal material is titanium alloy, the umbrella-shaped structure can also be called as an arrow-shaped metal titanium core. The connection mode of the metal material and the composite material is the key technology of the fan blade with the hybrid structure.

In the exemplary hybrid fan blade 20 of fig. 2, the metallic material portion of the hybrid blade body 50 may be provided with a slot for a suture 60 to pass through for suturing. That is, the metal material and the composite material may be sewn together by the sewing thread 60. The entirety of the metal material and the composite material preform may then be co-cured.

FIG. 1 illustrates a perspective schematic configuration of an exemplary suture assist device 10 to assist in suturing an exemplary hybrid fan blade 20, wherein the hybrid fan blade 20 is simplified. Fig. 2 and 3 illustrate cross-sectional configurations of two states of the example suture assist device 10 assisting in suturing the example hybrid fan blade 20, respectively. Fig. 4 shows a three-dimensional configuration of the suture assist device 10.

It is to be understood that the drawings are designed solely for purposes of illustration and not as a definition of the limits of the utility model, for which reference should be made to the appended claims.

With reference to fig. 1-4, the suture assist device 10 may assist in suturing the hybrid fan blade 20. The hybrid fan blade 20 has a portion to be sewn 201 and a non-sewn portion 202. It is to be understood that the portion 201 of the hybrid fan blade 20 to be stitched means a portion of the hybrid fan blade 20 to be stitched, and the non-stitched portion 202 of the hybrid fan blade 20 means a portion of the hybrid fan blade 20 that does not require stitching, at least temporarily. It is understood that a portion that does not need to be sewn in one sewing process may become a portion that needs to be sewn in another sewing process, and a portion that needs to be sewn in a previous sewing process may also become a portion that does not need to be sewn in a next sewing process.

For convenience of description, the hybrid fan blade 20 has a thickness direction T0, and also has a spanwise direction L0 and a chordwise direction X0. It will be appreciated that the chordwise direction X0 is a direction that coincides with a line connecting the leading and trailing edge points of the hybrid fan blade 20, that the spanwise direction L0 is the root to tip direction of the hybrid fan blade 20, and that the thickness direction T0 is a direction that is generally perpendicular to the chordwise direction X0 of the hybrid fan blade 20 in the cross-sectional views of FIGS. 2 and 3. It is to be understood that references herein to directions as "generally perpendicular," "along," and the like, are all permissible with a range of tolerances, such as within 10 ° of the required angular range.

The suture assisting device 10 includes two holders 1. Referring to fig. 5, each holder 1 includes a central portion 11 and an outer peripheral portion 12 provided on the periphery of the central portion 11. The two supports 1 are a first support 1a and a second support 1b provided at an interval in the thickness direction T0. In the illustrated embodiment, each support 1 may be a plate member, and the first support 1a and the second support 1b may be referred to as an upper mounting plate and a lower mounting plate, respectively.

It is to be understood that the terms "first", "second", etc. are used herein to define features only for the purpose of distinguishing between corresponding features, and are not intended to limit the scope of the present invention in any way unless otherwise specified.

The suture assist device 10 further includes a plurality of support rods 2. It is understood that "plurality" herein means more than three, including three, four, etc. Both ends of each support bar 2 are respectively screwed with the outer peripheral parts 12 of the two supports 1. In the illustrated embodiment, the upper end 21 of the support bar 2 is screwed to the outer peripheral portion 12 of the first seat 1a located on the upper side, while the lower end 22 of the support bar 2 is screwed to the outer peripheral portion 12 of the second seat 1b located on the lower side. By changing the positions of the two supports 1 on the support bar 2, the placing space for the blade sewing can be adjusted, and the height of the whole sewing auxiliary device 10 can also be adjusted, so that the support bar 2 can be called as a height adjusting bar of the sewing auxiliary device.

The suture assist device 10 further includes a plurality of ejector pins 3. Referring to fig. 6, each jack 3 has a screw section 31 and a rod head 32 attached to one end of the screw section 31. That is, in the jack 3, the rod head 32 is attached to one end of the screw section 31.

In the suture assisting device 10, the plurality of push rods 3 include a plurality of first push rods 3a and a plurality of second push rods 3 b. The plurality of first carrier rods 3a are distributed in the central portion 11 of the first support 1a by screw threads of the screw section 31 with the central portion 11 of the first support 1 a. The plurality of second carrier rods 3b are distributed in the central portion 11 of the second support 1b by screw sections 31 in threaded connection with the central portion 11 of the second support 1 b. In the illustrated embodiment, each of the holders 1 may be a plate member, and as shown in fig. 5, the central portion 11 of the plate member as the holder 1 may be provided with a plurality of adjustment screw holes 113 for engagement with the screw sections 31 of the carrier rods 3. Also, the outer circumferential portion 12 of the plate member as the holder 1 may be provided with a plurality of mounting screw holes 122 for screw-fitting with one end of the support bar 2. In the drawing, the plate member as the support 1 is a rectangular panel, and four corners of the rectangular panel are respectively provided with large screw holes constituting the mounting screw holes 122, while a middle position thereof is provided with small screw holes uniformly distributed in the longitudinal and lateral directions constituting the adjusting screw holes 113.

The tips 32 of the plurality of first lift pins 3a and the tips 32 of the plurality of second lift pins 3b respectively abut against the non-sewn portions 202 of the hybrid fan blades 20 from both sides of the hybrid fan blades 20 in the thickness direction T0, whereby the portions 201 to be sewn of the hybrid fan blades 20 are exposed for sewing.

In the suturing assisting device 10, the support rod 2 and the support 1 are connected together through thread matching, the distance between the two supports 1 in the thickness direction T0 can be conveniently adjusted, the device is suitable for the mixed fan blades 20 with large size difference, particularly, the first ejector rod 3a and the second ejector rod 3b are respectively distributed and supported on the two supports 1 through thread connection, the distance between the ejector rods 3a and 3b can be further adjusted, so that different accommodating spaces can be constructed, the device is suitable for the mixed fan blades 20 with different shapes, the non-suturing part 202 is fixedly clamped, and the part 201 to be sutured is exposed, so that an assistant person can suture.

In the suturing assisting device 10, the supporting rod 2 for connecting and supporting the two supports 1 is arranged on the periphery of the ejector rod 3, so that the supporting is stable, and the whole device is simple in structure and low in cost.

In the embodiment shown in fig. 1 to 4, the thickness direction T0 of the hybrid fan blade 20 coincides with the vertical direction, and the first ejector pin 3a and the second ejector pin 3b are located on the upper side and the lower side, respectively. The head 32 of the first ejector pin 3a and the head 32 of the second ejector pin 3b can respectively abut against the pressure surface 20a and the suction surface 20b of the hybrid fan blade 20. In other words, the sewing assisting device 10 constructs the pressure surface profile and the suction surface profile of the hybrid fan blade 20 through the plurality of height- adjustable ejector rods 3a and 3b, the constructed upper and lower profiles can jointly cover the portion of the hybrid fan blade 20 to be sewn, and the metal material and the composite material preform are fixed together to form the geometric configuration of the hybrid fan blade 20 and assist in sewing the metal material and the composite material preform. The length of the screw section 31 determines the height of the ram 3, and can be determined from the clamping profile.

The sewing auxiliary device 10 can adjust the heights of the ejector rods 3a and 3b through the threads on the ejector rods 3a and 3b, so that different blade profiles are constructed, and metal material and composite material prefabricated bodies can be fixed, thereby realizing the positioning and sewing of the hybrid fan blades, assisting the positioning and sewing operation of the fan blades with different configurations, and being used for the positioning and sewing operation of the metal materials and the composite materials of different sections of the same blade.

In the exemplary hybrid fan blade 20 of fig. 2, at least a portion of the hybrid blade body portion 50 may constitute the portion to be sewn 201. For example, in fig. 2, a part (not shown in fig. 2) of the hybrid blade body 50 in the span direction L0 constitutes a portion to be sewn 201, and another part (a portion tightened by all the lift pins 3a, 3b in fig. 2) of the hybrid blade body 50 in the span direction L0, and the composite trailing edge portion 30 and the metal leading edge portion 40 constitute a non-sewn portion 202. For another example, in fig. 3, the hybrid blade body portion 50 is integrally formed as the portion to be sewn 201, while the composite material trailing edge portion 30 and the metal leading edge portion 40 are formed as the non-sewn portion 202, and a part of the lift pins 3a corresponding to the portion to be sewn 201 is moved up to be out of contact with the hybrid blade body portion 50, while a part of the lift pins 3b corresponding to the portion to be sewn 201 is moved down to be out of contact with the hybrid blade body portion 50, that is, the lift pins 3 corresponding to the portion to be sewn 201 are adjusted to be away from the portion to be sewn 201, so that the portion to be sewn 201 is exposed for sewing. Compared with fig. 2, referring to fig. 3, when the hybrid fan blade 20 is sewed, different profiles can be constructed by only adopting partial ejector rods 3a and 3b, the sewing area and range can be freely selected, the sewing selectivity is increased, meanwhile, the two sides of the fan blade are clamped, the middle ejector rod 3 is heightened, and only the local part of the fan blade is sewed.

The sewing auxiliary device 10 can replace an integral sewing device or a segmentation device for sewing fan blades, the number and the cost of the sewing device are greatly reduced, and meanwhile, the sewing auxiliary device 10 can assist the sewing of the blades with different configurations by adjusting the position of the support 1 on the supporting rod 2 and the height of the ejector rod 3, as shown in figure 2. The suturing assisting device 10 can also assist the suturing of different size sections and local positions of the blades by adjusting the height of part of the ejector rod 3, so that the suturing accuracy is improved, and more suturing schemes can be provided at the same time, as shown in fig. 3.

In the illustrated embodiment, the head 32 of each jack 3 is sized to allow the head 32 to pass through a threaded hole that mates with the screw section 31. That is, the club head 32 can pass through the adjustment screw hole 113 provided in the center portion 11 of the carrier 1. In the illustrated embodiment, the rod head 32 of each jack 3 may include a polished rod section 321 and a head 322, and the head 322 is connected to one end of the aforementioned screw section 31 through the polished rod section 321. The polished rod section 321 may be, for example, a circular rod section having a circular cross section, and the head 322 may be, for example, a hemisphere or a spherical cap, and the diameter of the rod section as the polished rod section 321 and the spherical surface diameter of the head 322 may be set smaller than the threaded inner diameter of the screw section 31, so that the club head 32 may be allowed to pass through the adjustment screw hole 113 fitted to the screw section 31. Thus, the jack 3 can be easily removed. In the illustrated embodiment, the plurality of lift pins 3 (including the first lift pin 3a and the second lift pin 3b) may be identical to each other, so that they are interchangeable with each other, for example, a part of the lift pins 3 may be removed to be used in other necessary portions. In one embodiment, the head 320 of the rod head 32 of each ejector pin 3 may be made of a rubber material, which may avoid damage to the profile of the hybrid fan blade 20 when the hybrid fan blade 20 is pressed against.

In the embodiment shown in fig. 2, the first lift pins 3a and the second lift pins 3b may be aligned one by one in the thickness direction T0. That is, the point at which the head portion 322 of the head 32 of the first ejector pin 3a abuts against the hybrid fan blade 20, and the point at which the head portion 322 of the head 32 of the second ejector pin 3b abuts against the hybrid fan blade 20 are substantially aligned in the thickness direction T0. In another embodiment, the first lift pins 3a and the second lift pins 3b may be arranged to be offset in the thickness direction T0. That is, the point at which the head portion 322 of the head 32 of the first ejector 3a abuts against the hybrid fan blade 20, and the point at which the head portion 322 of the head 32 of the second ejector 3b abuts against the hybrid fan blade 20 are substantially shifted from each other in the thickness direction T0.

It is understood that specific terms are used herein to describe embodiments of the utility model, such as "one embodiment" and/or "another embodiment" to mean a particular feature, structure, or characteristic described in connection with at least one embodiment of the utility model. Therefore, it is emphasized and should be appreciated that two or more references to "one embodiment" or "another embodiment" in various places throughout this specification are not necessarily to the same embodiment. Furthermore, some of the features, structures, or characteristics of one or more embodiments of the present invention may be combined as suitable.

Referring to fig. 4, the first push rods 3a and the second push rods 3b may be uniformly distributed along the spanwise direction L0 and the chord direction X0. That is, the plurality of first lift pins 3a are uniformly distributed along the spanwise direction L0 and the chordwise direction X0, and the plurality of second lift pins 3b are also uniformly distributed along the spanwise direction L0 and the chordwise direction X0. The adjusting screw holes 113 for installing the push rods 3 are correspondingly and uniformly distributed, and the distance and the size of the adjusting screw holes can be set as required.

Referring to fig. 2 and 3, the seam assist device 10 may further include a support platform 4. The support platform 4 may comprise a recess 41 and a mesa 42 arranged around the recess 41. The lower end 22 of each support rod 2 can penetrate through the outer peripheral part 12 of the second support 1b located at the lower side and be supported on the table surface 42, and the concave hole 41 can avoid the screw section 31 of the second push rod 3b and penetrate through the rod end of the central part 11 of the second support 1 b.

An exemplary installation of the above-described auxiliary suturing device 10 and auxiliary suturing operation will be described below with reference to fig. 1 to 4.

In the auxiliary suturing device 10, in the initial position, each of the first push rod 3a and the second push rod 3b can be at the same height position, for example, the head of the first push rod 3a and the head of the second push rod 3b are at the same plane position, for example, as shown in fig. 4. When needing to sew up, adjust the height on the support 1a, 1b of the knockout pin 3a, 3b through the whorl, construct different profiles by a plurality of knockout pins 3, jack up or clamp the mixed fan blade 20 tightly, and then carry on the different sections, different fan blade sews up of position.

Referring to fig. 1, when the blade is sewn, the blade may be sewn in a direction from the blade tip to the tenon, or in a direction from the tenon to the blade tip, and the non-sewn portion 202 of the hybrid fan blade 20 is clamped by the auxiliary sewing device 10, so that the portion 201 to be sewn is exposed, and the sewing operation is facilitated. Illustratively, when the portion to be sewn is sewn, the hybrid fan blade 20 can be removed, a new profile can be constructed by the ejector pin 3, the other portion of the hybrid fan blade 20 can be clamped, and a new region to be sewn can be started.

By the mode, when the blades are sewn, the whole sewing device or the segmented sewing device of the whole fan blade is not required to be processed, and one set or two sets of height-adjustable sewing auxiliary devices can be used for assisting the sewing of different segments of the fan blade. Meanwhile, the profile of the sewing auxiliary device can be adjusted, so that the sewing auxiliary device can be used for sewing mixed fan blades with different configurations and sizes. When the size of the sewing auxiliary device is larger than that of the clamping fan blade, the molded surface of the fan blade can be constructed only by adjusting part of the ejector rods.

Referring to fig. 2, the head 320 of the ejector pin 3 of the auxiliary sewing device 10 can contact with the hybrid fan blade 20 to tightly push against the hybrid fan blade 20, so as to prevent sliding between the metal material and the composite material and ensure the sewing accuracy. The auxiliary sewing device 10 can be adjusted in two ways during auxiliary sewing, one way is to adjust the profile of the auxiliary sewing device 10 and then clamp the hybrid fan blade 20 by adjusting the support rod 2, and the other way is to place the hybrid fan blade 20 on the auxiliary sewing device 10 and then adjust the height of the ejector rod 3, so as to clamp the hybrid fan blade 20.

Referring to fig. 3, by adjusting the height of the ejector rod 3, the head of part of the ejector rod 3 contacts and tightly pushes the hybrid fan blade 20, and part of the ejector rod 3 does not contact the hybrid fan blade 20, the partial region (the hybrid blade body 50) of the hybrid fan blade 20 can be sewed locally, the sewing is more accurate, and the sewing efficiency is higher. After sewing of a part of the region, the height of the ejector rod 3 can be adjusted to clamp the part of the region, the ejector rod 3 of the region needing sewing is adjusted to be higher, the sewing auxiliary device 10 and the mixing fan blade 20 are separated, and then the part of the region is sewn. By adopting the sewing mode, partial and sectional sewing can be performed, the sewing selectivity is higher, and the fixing effect of the metal material and the composite material is better.

The auxiliary sewing device can construct different profiles by changing and adjusting the height of the ejector rod, assist the sewing of different sections of the blades with different configurations and the same blade, and greatly increase the application range. By adopting the sewing auxiliary device, the fan blade can be constructed, the prefabricated body of the metal material and the composite material can be fixed, the materials can be prevented from sliding, the sewing accuracy is ensured, the sewing auxiliary device can assist local and segmented sewing, the sewing selectivity is larger, and the fixing effect of the metal material and the composite material is better.

Moreover, in the process of sewing the blade, the profile of the auxiliary sewing device is adjustable, different sewing lengths can be selected as required, meanwhile, the blade can be sewn along the height of the blade or along the width direction of the blade, and partial areas of the blade can also be sewn without processing a plurality of special sewing devices, so that the auxiliary sewing device can replace the whole large fixed profile sewing device or a plurality of fixed profile sewing devices for sewing, and the number and the cost of the devices are greatly reduced.

Although the present invention has been disclosed in terms of the preferred embodiment, it is not intended to limit the utility model, and variations and modifications may be made by one skilled in the art without departing from the spirit and scope of the utility model. Therefore, any modification, equivalent change and modification of the above embodiments according to the technical essence of the present invention are within the protection scope defined by the claims of the present invention, unless the technical essence of the present invention departs from the content of the present invention.

Claims (10)

1. A suture assisting device for assisting in suturing a hybrid fan blade having a portion to be sutured and a non-sutured portion, and having a thickness direction, characterized by comprising:

the two supports are a first support and a second support which are arranged at intervals along the thickness direction;

the two ends of each supporting rod are respectively in threaded connection with the outer peripheries of the two supports; and

the ejector rod comprises a plurality of ejector rods, a plurality of connecting rods and a plurality of connecting rods, wherein each ejector rod is provided with a screw rod section and a rod head connected to one end of the screw rod section; and is

The plurality of ejector rods comprise a plurality of first ejector rods and a plurality of second ejector rods, the first ejector rods are in threaded connection with the central part of the first support through screw sections and are distributed on the central part of the first support, the second ejector rods are in threaded connection with the central part of the second support through screw sections and are distributed on the central part of the second support, and rod heads of the first ejector rods and rod heads of the second ejector rods respectively tightly prop against the non-sewing part of the hybrid fan blade from two sides of the hybrid fan blade in the thickness direction, so that the part to be sewn of the hybrid fan blade is exposed for sewing.

2. The suture assist device of claim 1,

the head of each carrier rod is dimensioned to allow the head to pass through a threaded bore that mates with the screw section.

3. The suture assist device of claim 1,

each support is a flat plate, the central part of the flat plate is provided with a plurality of adjusting screw holes for matching with the screw rod section of the ejector rod, and the peripheral part of the flat plate is provided with a plurality of mounting screw holes for matching with one end of the supporting rod in a threaded manner.

4. The suture assist device of claim 1,

the first ejector rod and the second ejector rod are aligned one by one in the thickness direction.

5. The suture assist device of claim 1,

the first ejector rod and the second ejector rod are arranged in a staggered mode in the thickness direction.

6. The suture assist device of claim 1 wherein the hybrid fan blade has a spanwise chord direction;

the first ejector rods and the second ejector rods are respectively and uniformly distributed along the spanwise direction and the chord direction.

7. The suture assist device of claim 1,

the head of each ejector rod comprises a polish rod section and a head, and the head is connected to one end of the screw rod section through the polish rod section.

8. Suture assist device according to claim 7,

the head of the rod head of each ejector rod is made of rubber material.

9. The seam assist device of claim 1,

the thickness direction of the hybrid fan blade is consistent with the vertical direction, and the first ejector rod and the second ejector rod are respectively positioned at the upper side and the lower side;

and the rod head of the first ejector rod and the rod head of the second ejector rod respectively tightly push against the pressure surface and the suction surface of the hybrid fan blade.

10. The suture assist device of claim 1,

the auxiliary sewing device further comprises a supporting platform, wherein the supporting platform comprises a concave hole and a table top arranged around the concave hole;

the lower end of each supporting rod penetrates through the outer peripheral part of the second support positioned on the lower side and is supported on the table board, and the concave hole avoids the screw section of the second ejector rod and penetrates through the rod end of the central part of the second support.

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