A guide tool and a hose guide jig

Abstract

The application relates to the field of medical equipment production, in particular to an auxiliary guiding tool and a hose straightening jig. The auxiliary guiding tool is used for assisting insertion of a straightening core wire into an inlet end of a flexible pipe body. The straightening core wire is a rigid wire structure. The auxiliary guiding tool comprises a supporting part, an extending part and a converging hole. The supporting part has opposite wire inlet faces and wire outlet faces. The wire outlet faces of the supporting part are protruded to form at least one extending part. The outer wall of the extending part is matched with the inner wall of the inlet end, and the inner part of the extending part is formed with a guiding hole for the straightening core wire to pass along a first direction. The wire inlet faces of the supporting part are partially invaginated to form a converging hole with a tip communicated with the guiding hole. The auxiliary guiding tool is split along the diameter of the guiding hole to form two mutually matched splicing blocks. The two splicing blocks are mutually close or far away through translation. The insertion direction of the end part of the straightening core wire is restricted through the guiding hole and the converging hole, the auxiliary guiding tool can be removed from both sides for multiple uses, and the operation efficiency is improved.

Description

Technical Field

[0001] This utility model relates to the field of medical device manufacturing, and in particular to an auxiliary guiding tool and a hose straightening fixture. Background Technology

[0002] With increasing demands for medical safety, in addition to interventional Class III medical devices, some Class II medical devices that come into direct contact with the human body also require surface treatment to improve biocompatibility and human safety. When treating flexible tubular medical devices, such as urinary catheters, the tubular material needs to be straight to maintain uniformity of the treatment along its axial direction. However, flexible tubular materials are typically stored in a coiled manner, resulting in a coiled state that makes it difficult to achieve a straight shape.

[0003] Currently, when surface treating tubular materials, the materials are typically positioned and straightened by fitting them onto the outside of locating pins, followed by automated surface treatment. However, automated equipment often experiences slight vibrations during handling. When the tubular material has a small diameter or a stepped diameter-changing structure on the inner wall of the inlet, it is difficult to accurately fit the tubular material onto the locating pin using automated equipment. This results in low efficiency in straightening the tubular material, which is detrimental to large-scale production and the construction of unmanned workshops, severely impacting efficiency. Utility Model Content

[0004] The purpose of this utility model is to provide an auxiliary guiding tool, a hose straightening fixture, and a hose straightening method that help improve the efficiency of hose straightening.

[0005] To achieve the above objectives, this utility model provides the following technical solution: An auxiliary guiding tool is provided to assist in the insertion of a straightening core wire into the inlet end of a flexible tube. The straightening core wire is a rigid filamentous structure extending along a first direction. The auxiliary guiding tool includes a support portion, an extension portion, and a convergence hole. The support portion is a block-shaped structure with opposing inlet and outlet surfaces. The outlet surface of the support portion extends along the first direction to form at least one extension portion. The outer wall of the extension portion fits into the inner wall of the inlet end of the flexible tube. A guide hole extending along the first direction and fitting the diameter of the straightening core wire is formed within the extension portion. The inlet surface of the support portion is partially recessed to form the convergence hole. The tip of the convergence hole communicates with the guide hole. The auxiliary guiding tool is composed of two interlocking blocks. The two interlocking blocks are formed by splitting the auxiliary guiding tool along the diameter of the guide hole. The two interlocking blocks can controllably move closer to or separate from each other along a third direction perpendicular to the first direction.

[0006] Optionally, the straightening core wire has a fixed end connected to the transfer plate and an insertion end opposite to the fixed end. The straightening core wire is fixed relative to the transfer plate. The inlet end of the flexible tube is constrained by the positioning hole of the feeding plate, and its central axis extends along the first direction. The straightening core wire, the flexible tube, and the convergence hole correspond one-to-one. The transfer plate drives multiple straightening core wires to move synchronously and controllably, and the feeding plate drives multiple flexible tubes to move synchronously and controllably.

[0007] Optionally, the auxiliary guide fixture includes multiple sets of the extensions and the receiving holes. The auxiliary guide fixture is split along a split line formed in the wire feeding surface to form two splicing blocks. The split line includes multiple segmented segments and connecting segments. Each segmented segment penetrates at least one receiving hole, and each receiving hole is penetrated by the segmented segment. The two ends of each connecting segment are respectively connected to the ends of two adjacent segmented segments.

[0008] Optionally, the split line includes two segmented segments parallel to the second direction and a connecting segment parallel to the third direction. The second direction is perpendicular to the first direction and perpendicular to the third direction. A plurality of auxiliary guide fixtures are arranged along the second direction and operate synchronously.

[0009] Optionally, both of the splicing blocks include a mounting part and a replacement part, the replacement part being detachably connected to the mounting part, and each set of the extension part and the convergence hole is formed by splicing two mutually cooperating replacement parts.

[0010] Optionally, the diameter of the converging hole is larger than the diameter of the inlet end of the flexible tube, and the converging hole is conical in shape and has a smooth inner wall.

[0011] The present invention also provides a flexible tube straightening fixture, including the above-mentioned auxiliary guiding tooling, and further including the straightening core wire, a transfer plate, a feeding plate and a mating component. The mating component is detachably connected to the transfer plate and the straightening core wire is connected to the mating component. The inlet end of the flexible tube is supported by the feeding plate, and the mating component is mated to the inlet end of the flexible tube and is detachably connected to the inlet end of the flexible tube.

[0012] Optionally, the mating member has a mating section that mates with the inlet end of the flexible tube. The mating section is embedded inside the flexible tube. A core wire channel is formed inside the mating member that extends along the first direction and penetrates the mating section. The straightening core wire portion is embedded in the core wire channel and is detachably connected to the core wire channel.

[0013] Optionally, the core wire channel includes a through section and a snap-fit ​​section connected to each other. The diameter of the through section is smaller than the diameter of the snap-fit ​​section, and the snap-fit ​​section is connected to the end of the mating member near the feed plate. The position of the straightening core wire near its end expands to form a friction part with a diameter that matches the snap-fit ​​section. The friction part enters the snap-fit ​​section from the through section and snaps into the snap-fit ​​section.

[0014] Optionally, the flexible tube includes a body and a connection port. The connection port is a rigid structure with openings at both ends, including an interface segment and a tube segment. The tube segment is connected to the body. The interface segment is the inlet end of the flexible tube, and its inner wall is detachably connected to the outer wall of the mating segment of the mating member.

[0015] According to a first aspect of the invention, the extension is inserted into the inlet end of the flexible tube, a guide hole with a small diameter is formed in the extension, and a conical converging hole is formed at the end of the guide hole. This allows the end of the straightening wire to accurately enter the guide hole even during shaking, and to immerse itself in the smooth inner wall of the flexible tube along the guide hole. This ensures that the straightening wire is efficiently and accurately inserted into the flexible tube for straightening, facilitating the straightening operation through automated equipment handling and improving the straightening efficiency of the flexible tube. By splitting the auxiliary guiding fixture into two splicing blocks along the diameter of the guide hole, it is easy to separate from both sides after the auxiliary straightening wire is inserted into the flexible tube, facilitating complete insertion of the straightening wire into the flexible tube. Furthermore, the auxiliary guiding fixture can be reused multiple times to assist in the insertion of another set of straightening wires into the flexible tube, reducing costs and improving practicality.

[0016] Furthermore, multiple straightening core wires extending along the first direction are fixedly connected by a transfer plate, and multiple flexible tubes are carried by a feeding plate, which facilitates the simultaneous straightening of multiple sets of flexible tubes.

[0017] Furthermore, dividing the auxiliary guide fixture with a near-wavy split line allows for the simultaneous formation of multiple rows of extensions on the auxiliary guide fixture, facilitating the straightening of a large number of flexible tubes at the same time and improving efficiency.

[0018] Furthermore, the same auxiliary guide tooling includes only two different rows of extensions, and multiple auxiliary guide tools are arranged along the second direction, which makes it easy to select the number of auxiliary guide tools according to the actual situation and helps to improve universality.

[0019] Furthermore, the extension and the convergence hole are formed in a replaceable part that is detachably connected to the mounting part, so that different specifications of straightening core wire and flexible tube can be matched by replacing different replaceable parts.

[0020] Furthermore, increasing the diameter of the take-up aperture helps ensure that the straightening wire passes through the take-up aperture and enters the guide aperture. The take-up aperture is constructed as a cone with a smooth inner wall, which facilitates the sliding of the end of the straightening wire along the inner wall of the take-up aperture to the guide aperture.

[0021] According to a second aspect of the invention, by detachably connecting the inlet end of the flexible tube to the mating component, the relative positions of the flexible tube and the straightening wire are fixed, preventing excessive structural interference between the flexible tube and the straightening wire due to vibration during their joint movement, and reducing the risk of damage, deformation, or detachment of the straightening wire from the flexible tube. The mating component is detachably connected to the transfer plate, and the straightening wire is connected to the mating component, facilitating adjustment of the mating component and the straightening wire connected to it at the inlet end of the flexible tube. The detachable connection of the mating component is achieved through a variable diameter structure with an embedded through hole and a nut, resulting in simple and convenient operation and high connection strength.

[0022] Furthermore, the guide wire is detachably connected to the mating component, facilitating the adjustment and replacement of the guide wire when the diameter of the flexible tube is adjusted. Embedding one end of the guide wire within the mating component helps reduce the swaying amplitude of the guide wire when the transfer plate shakes, thereby ensuring accurate stringing of the guide wire and protecting it, while reducing the risk of bending.

[0023] Furthermore, when the straight conductor wire bends and wobbles slightly due to vibration, it first comes into contact with the opening of the passage section before bending further, which helps to disperse stress and reduce the risk of damage to the straight conductor wire.

[0024] Furthermore, the inlet end of the flexible tube is constructed as a rigid structure, which facilitates the support of the flexible tube on the feeding plate and improves the connection strength between the mating parts and the inlet end of the flexible tube.

[0025] The above description is only an overview of the technical solution of this utility model. In order to better understand the technical means of this utility model and to implement it in accordance with the contents of the specification, the preferred embodiments of this utility model are described in detail below with reference to the accompanying drawings. Attached Figure Description

[0026] Figure 1 This is a schematic diagram of the flexible hose straightening fixture shown in Embodiment 1 of this utility model; Figure 2 This is a schematic diagram of the auxiliary guide tooling shown in Embodiment 1 of this utility model; Figure 3 This is a cross-sectional structural diagram of the auxiliary guide tool for inserting the straight core wire through the flexible tube in Embodiment 1 of this utility model; Figure 4 This is a cross-sectional structural diagram of the mating component being detachably connected to the flexible tube body in Embodiment 1 of this utility model; Figure 5 This is a flowchart of the hose straightening method shown in Embodiment 1 of this utility model.

[0027] Legend: 1-Transfer plate, 2-Guide wire, 21-Fixed end, 22-Insertion end, 23-Friction part, 3-Feeding plate, 31-Positioning hole, 4-Flexible tube body, 401-Inlet end, 41-Body body, 42-Connection port, 421-Interface section, 422-Tube body section, 423-Snap ring, 424-Limiting ring, 5-Auxiliary guide fixture, 51-Support part, 511-Wire infeed surface, 51 2-Split line, 513-Divided section, 514-Connecting section, 515-Outlet surface, 52-Extension, 521-Guide hole, 53-Gathering hole, 54-Splicing block, 541-Mounting part, 542-Replacement part, 6-Matching part, 61-Locking section, 62-Embedding section, 63-Matching section, 631-Slot, 64-Core wire channel, 641-Passing section, 642-Snap-fit ​​section, 7-Nut. Detailed Implementation

[0028] The technical solution of this utility model will now be clearly and completely described with reference to the accompanying drawings. Obviously, the described embodiments are only some, not all, of the embodiments of this utility model. Based on the embodiments of this utility model, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this utility model.

[0029] In the description of this utility model, it should be noted that the terms "center," "upper," "lower," "left," "right," "vertical," "horizontal," "inner," and "outer," etc., indicating the orientation or positional relationship, are based on the orientation or positional relationship shown in the accompanying drawings and are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this utility model. Furthermore, the terms "first," "second," and "third" are used for descriptive purposes only and should not be construed as indicating or implying relative importance.

[0030] In the description of this utility model, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "joining" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances.

[0031] Furthermore, the technical features involved in the different embodiments of this utility model described below can be combined with each other as long as they do not conflict with each other.

[0032] This utility model application protects an auxiliary guiding fixture 5 for assisting the insertion of a straightening wire 2 into the inlet end 401 of a flexible tube 4. The straightening wire 2 is a rigid filament structure with a fixed end 21 connected to a transfer plate 1 and an insertion end 22 opposite to the fixed end 21. The straightening wire 2 is fixed relative to the transfer plate 1 and extends along a first direction. The inlet end 401 of the flexible tube 4 is constrained by the positioning hole 31 of the feeding plate 3, and its central axis extends along the first direction. The auxiliary guiding fixture 5 includes a support part 51, an extension part 52, and a converging hole 53. Part 51 has a block structure with a corresponding infeed surface 511 and an outlet surface 515. The outlet surface 515 of the support part 51 extends along the first direction to form an extension part 52. The outer wall of the extension part 52 is fitted to the inner wall of the inlet end 401 of the flexible tube 4. A guide hole 521 extending along the first direction and fitted to the diameter of the straightening core wire 2 is formed in the extension part 52. The infeed surface 511 of the support part 51 is partially recessed to form a gathering hole 53. The gathering hole 53 is conical and has a smooth inner wall. The tip of the gathering hole 53 is connected to the guide hole 521.

[0033] The extension 52 is inserted into the inlet end 401 of the flexible tube 4. A guide hole 521 with a small diameter is formed in the extension 52, and a conical converging hole 53 is formed at the end of the guide hole 521. This allows the end of the straightening core wire 2 to accurately enter the guide hole 521 even when shaking, and to immerse itself in the middle of the flexible tube 4 with a smooth inner wall along the guide hole 521. This ensures that the straightening core wire 2 is inserted into the flexible tube 4 for straightening efficiently and accurately, which facilitates the straightening operation through automated equipment and improves the straightening efficiency of the flexible tube.

[0034] Please refer to the following examples for details.

[0035] Example 1: Please see Figure 1 The hose straightening fixture shown in a preferred embodiment of this application includes a transfer plate 1, straightening core wires 2, a feeding plate 3, and an auxiliary guiding fixture 5. Multiple rigid straightening core wires 2 are connected to the transfer plate 1. The inlet end 401 of the flexible tube 4 to be straightened is constrained to the feeding plate 3 and corresponds one-to-one with each straightening core wire 2. The auxiliary guiding fixture 5 is used to assist the straightening core wires 2 in being inserted into the inlet end 401 of the flexible tube 4.

[0036] Please see Figure 2The auxiliary guide fixture 5 includes a support portion 51, an extension portion 52, and a gathering hole 53. The support portion 51 is generally rectangular plate with a relatively large thickness, and has a wire inlet surface 511 and a wire outlet surface 515 that are relatively horizontally arranged, with the height of the wire inlet surface 511 being higher than that of the wire outlet surface 515. The extension portion 52 is formed on the wire outlet surface 515, and the gathering hole 53 is formed on the wire inlet surface 511.

[0037] The feed surface 511 of the auxiliary guide fixture 5 has a split line 512. The auxiliary guide fixture 5 is divided along the trajectory of the split line 512 in a first direction to form two relatively independent splicing blocks 54. Taking the vertical direction as the first direction, and the extension directions of two adjacent mutually perpendicular edges of the auxiliary guide fixture 5 in the horizontal plane as the second direction and the third direction, respectively, the split line 512 includes two segmented segments 513 extending along the second direction and a connecting segment 514 extending along the third direction. The segmented segments 513 are connected to the edges of the auxiliary guide fixture 5, and the connecting segment 514 connects the ends of the two segmented segments 513 and is located at the centerline of the auxiliary guide fixture 5.

[0038] The splicing block 54 includes a mounting portion 541 and two replacement portions 542 detachably connected to the mounting portion 541. Each replacement portion 542 is rectangular, with one edge coinciding with the segment 513 of the split line 512. When two splicing blocks 54 abut against each other and are spliced ​​together, the four replacement portions 542 of the two splicing blocks 54 are paired and spliced ​​into two rectangular guide wire assemblies. An extension portion 52 and a convergence hole 53 are both formed in the guide wire assembly. The extension portion 52 is formed in the middle of the guide wire assembly, protruding from the wire exit surface 515 and extending along a first direction, and is generally in the shape of a frustum with decreasing diameter. The outer wall of the extension portion 52 fits the inner wall of the inlet end 401 of the flexible tube 4, facilitating the insertion of the extension portion 52 into the inlet end 401 of the flexible tube 4. A guide hole 521 extending along the first direction and with a diameter matching the straightening core wire 2 is formed at the central axis of the extension portion 52, and the guide hole 521 penetrates the extension portion 52. A conical gathering hole 53 is formed by recessing the infeed surface 511 at a position corresponding to the extension 52. The gathering hole 53 has a smooth inner wall, is coaxial with the extension 52, and its tip communicates with the guide hole 521. The diameter of the gathering hole 53 is larger than the diameter of the inlet end 401 of the flexible tube 4, which facilitates the insertion of the end of the straightening core wire 2, thereby guiding the end of the straightening core wire 2 into the guide hole 521. Both the extension 52 and the gathering hole 53 are vertically split along their diameters to form two forming units, and the two forming units are respectively formed in two corresponding replacement parts 542. The two forming units are joined to form the extension 52 and the gathering hole 53 only when the two corresponding replacement parts 542 are spliced ​​together to form a guide wire assembly.

[0039] In this embodiment, multiple auxiliary guide fixtures 5 are evenly arranged and move synchronously along the second direction to form two rows of extensions 52 and convergence holes 53 arranged along the second direction and staggered from each other. These coordinate with two rows of straightening core wires 2 and flexible tubes 4 that correspond one-to-one with each convergence hole 53, and assist the two rows of straightening core wires 2 in being simultaneously inserted into the inlet end 401 of the corresponding flexible tube 4.

[0040] In this embodiment, the flexible tube 4 is a single-lumen urinary catheter, and the inlet end 401 of the flexible tube 4 is the outlet of the urinary catheter. The flexible tube 4 includes a body 41 and a connecting port 42. The body 41 is a flexible tubular structure with openings at both ends, and the connecting port 42 is connected to one end of the body 41 to form the inlet end 401. The connecting port 42 is a rigid structure with openings at both ends, including an interface section 421 and a tube section 422. The tube section 422 is fixedly connected to the body 41 and coaxially communicates with the interior of the body 41. The interface section 421 is truncated cone-shaped, and the end connected to the tube section 422 has a smaller diameter. Multiple horizontally arranged annular retaining rings 423 are formed on its inner wall for a tight and detachable connection with the urine bag. Because the inner diameter of the end of the tube section 422 adjacent to the interface section 421 is smaller than the inner diameter of the end of the interface section 421 adjacent to the tube section 422, a stepped diameter-changing structure is formed at the connection between the interface section 421 and the tube section 422. When the position of the straightening wire 2 inserted into the connection port 42 is deviated, there is a significant risk that it will be blocked by the stepped structure formed between the interface section 421 and the tube section 422, which can easily lead to damage to the straightening wire 2. In this application, the position of the straightening wire 2 is constrained by the extension 52 and the guide hole 521, so that the straightening wire 2 is inserted into the connection port 42 from the axis, ensuring smooth insertion of the straightening wire 2.

[0041] The feeding plate 3 is a horizontally arranged, elongated plate-like structure extending along the second direction. Multiple circular positioning holes 31 are formed on the feeding plate 3, penetrating vertically, and each positioning hole 31 is coaxial with each extension portion 52. A circular limiting ring extends outward from the edge of the inlet end 401 of the flexible tube 4, and the diameter of the positioning hole 31 matches the limiting ring, ensuring that each flexible tube 4 is supported by the positioning hole 31 through the limiting ring.

[0042] Please see Figure 4 In this embodiment, the hose straightening fixture also includes a mating part 6. The mating part 6 is detachably connected to the transfer plate 1 and the straightening core wire 2 is detachably connected to the mating part 6. The outer wall of the mating part 6 also fits into the inner wall of the interface section 421 of the connection port 42.

[0043] The mating component 6 includes a locking section 61, an insert section 62, and a mating section 63 connected to each other. An insert through-hole is formed on the transfer plate 1, extending through the transfer plate 1 in a first direction. The insert through-hole has two cylindrical inner walls of different diameters, with a smaller diameter at the top and a larger diameter at the bottom, thus forming a step of contact within the insert through-hole. The insert section 62 of the mating component 6 fits into the insert through-hole, and the top of the insert section 62 extends upwards to form the locking section 61. The outer wall of the locking section 61 is threaded. The locking section 61 passes through the insert through-hole from below, reaching the top of the transfer plate 1, and completely embeds the insert section 62 within the insert through-hole. At this point, the locking section 61 cannot move further upwards due to the action of the step of contact. A nut 7 fitted to the locking section 61 is threaded and fastened to the locking section 61 until the nut 7 abuts against or is partially embedded in the upper surface of the transfer plate 1, thus achieving a detachable connection between the mating component 6 and the transfer plate 1.

[0044] The bottom of the embedded section 62 extends downward to form a docking section 63. The docking section 63 is structured to fit the inner wall of the interface section 421 of the connection port 42, and a groove 631 is formed on the outer wall of the docking section 63 to fit the retaining ring 423. When the docking section 63 is inserted into the inlet end 401 of the flexible tube 4, it is detachably connected to the interface section 421 of the connection port 42.

[0045] A core wire channel 64, extending through the mating member 6 in a first direction, is formed at the central axis of the mating member 6 for connecting the straightening core wire 2. The straightening core wire 2 is constructed as a rigid filament with opposing fixed ends 21 and insertion ends 22. A cylindrical friction portion 23 is formed near the fixed end 21 of the straightening core wire 2, and the friction portion 23 is coaxial with the other parts of the straightening core wire 2. The core wire channel 64 includes a through section 641 and a snap-fit ​​section 642 connected to each other. The diameter of the through section 641 is smaller than the diameter of the snap-fit ​​section 642 and matches the diameter of the friction portion 23. The snap-fit ​​section 642 is connected to the bottom of the through section 641. The fixed end 21 of the straightening core wire 2 is inserted into the core wire channel 64 from the bottom until the friction portion 23 and the snap-fit ​​section 642 of the core wire channel 64 are press-fitted together and fixed together under the action of friction, thus realizing a detachable connection between the straightening core wire 2 and the mating member 6.

[0046] Please see Figure 5 When the auxiliary guide tool 5 assists in inserting the straightening core wire 2 into the inlet end 401 of the flexible tube 4, the hose straightening method includes: S1. Bring the two interlocking blocks 54 close to each other until they touch each other, and together move towards the flexible tube 4 in the first direction, so that the extension 52 formed by splicing is embedded in the inlet end 401 constrained by the flexible tube 4.

[0047] S2. Make the straightening core wire 2 approach and insert it into the spliced ​​convergence hole 53 along the first direction.

[0048] S3. When the straightening wire 2 passes through the inlet end 401 of the flexible tube 4, the two splicing blocks 54 move away from the flexible tube 4 along the first direction, and the extension 52 leaves the flexible tube 4.

[0049] S4. Separate the two splicing blocks 54 from each other and make the straightening core wire 2 completely penetrate the straightening flexible tube body 4.

[0050] In step S1, two interlocking splicing blocks 54 of multiple auxiliary guide fixtures 5 are arranged along the second direction and connected to two transfer mechanisms, so that the two splicing blocks 54 of each auxiliary guide fixture 5 move in the center and the multiple auxiliary guide fixtures 5 operate synchronously in the same state. The straightening core wire 2 is fixedly connected to the transfer plate 1 through the mating part 6, and the inlet end 401 of the flexible tube 4 is constrained to the feeding plate 3 through the positioning hole 31.

[0051] In step S2, the transfer plate 1 is moved until the insertion end 22 of the straightening wire 2 is inserted into the tube section 422 of the connection port 42. At this time, with the assistance of the auxiliary guide tool 5, the insertion end 22 of the straightening wire 2 stably passes through the inlet end 401 of the flexible tube 4 with a relatively rough and complex inner wall structure, and enters the corresponding position of the body 41 with a smooth inner wall structure.

[0052] In step S3, while the two splicing blocks 54 move upward together, the straightening core wire 2 continues to move vertically downward.

[0053] In step S4, while the two splicing blocks 54 separate from each other along a third direction, the straightening core wire 2 continues to move vertically downward, and the splicing blocks 54 do not interfere with the mating parts 6 and the transfer plate 1.

[0054] When step S4 is completed, the guide wire 2 and the inlet end 401 of the flexible tube 4 are fixed relative to each other, and the auxiliary guide fixture 5 is completely separated from the guide wire 2 and the flexible tube 4, so that the guide wire 2 and the flexible tube 4 can move together to the next process for processing. At the same time, the auxiliary guide fixture 5 continues to assist the insertion and connection of the next set of guide wire 2 and flexible tube 4 at the work station of this process.

[0055] In this embodiment, since the replacement part 542 is detachably connected to the mounting part 541, the mating part 6 is detachably connected to the transfer plate 1, the straightening core wire 2 is detachably connected to the mating part 6, and the outer wall of the mating part 6 is mated to the inner wall of the interface section 421 of the connection port 42, and the positioning hole 31 on the feeding plate 3 is mated to the outer wall of the connection port 42, when the specifications of the flexible tube 4 change, the feeding plate 3 is replaced, and the mating part 6 and the straightening core wire 2 are selected according to the specifications of the flexible tube 4, and the replacement part 542 is selected according to the needs of the extension part 52, so that the flexible tube straightening fixture in this embodiment can be mated to flexible tubes 4 of various different specifications.

[0056] The technical features of the above embodiments can be combined in any way. For the sake of brevity, not all possible combinations of the technical features in the above embodiments are described. However, as long as there is no contradiction in the combination of these technical features, they should be considered to be within the scope of this specification.

[0057] The embodiments described above are merely illustrative of several implementations of this utility model, and while the descriptions are relatively specific and detailed, they should not be construed as limiting the scope of the utility model patent. It should be noted that those skilled in the art can make various modifications and improvements without departing from the concept of this utility model, and these all fall within the protection scope of this utility model. Therefore, the protection scope of this utility model patent should be determined by the appended claims.

Claims

1. An auxiliary guiding tool, characterized in that, The guide wire (2) is used to assist the insertion of the straightening wire (2) into the inlet end (401) of the flexible tube (4). The straightening wire (2) is constructed as a rigid filament structure and extends along a first direction. The auxiliary guide tool (5) includes a support part (51), an extension part (52), and a gathering hole (53). The support part (51) is constructed as a block structure and has opposing wire inlet surface (511) and wire outlet surface (515). The surface of the wire outlet surface (515) of the support part (51) extends along the first direction to form at least one extension part (52). The outer wall of the extension part (52) is fitted to the inner wall of the inlet end (401) of the flexible tube (4). The extension (52) has a guide hole (521) that extends along the first direction and matches the diameter of the straightening core wire (2). The wire feeding surface (511) of the support (51) is partially recessed to form the gathering hole (53). The tip of the gathering hole (53) communicates with the guide hole (521). The auxiliary guide tooling is composed of two interlocking blocks (54). The two interlocking blocks (54) are formed by splitting the auxiliary guide tooling (5) along the diameter of the guide hole (521). The two interlocking blocks (54) can controllably move closer to each other or separate from each other along a third direction perpendicular to the first direction.

2. The auxiliary guiding tooling as described in claim 1, characterized in that, The straightening core wire (2) has a fixed end (21) connected to the transfer plate (1) and an insertion end (22) opposite to the fixed end (21). The straightening core wire (2) is fixed relative to the transfer plate (1). The inlet end (401) of the flexible tube (4) is constrained by the positioning hole (31) of the feeding plate (3), and its central axis extends along the first direction. The straightening core wire (2), the flexible tube (4) and the gathering hole (53) correspond one-to-one. The transfer plate (1) drives multiple straightening core wires (2) to move synchronously in a controllable manner, and the feeding plate (3) drives multiple flexible tubes (4) to move synchronously in a controllable manner.

3. The auxiliary guiding tooling as described in claim 1, characterized in that, The auxiliary guide tool (5) includes multiple sets of the extensions (52) and the receiving holes (53). The auxiliary guide tool (5) splits along the split line (512) formed in the wire feeding surface (511) to form two splicing blocks (54). The split line (512) includes multiple segments (513) and connecting segments (514). Each segment (513) penetrates at least one receiving hole (53), and each receiving hole (53) is penetrated by the segment (513). The two ends of each connecting segment (514) are respectively connected to the ends of two adjacent segments (513).

4. The auxiliary guide tooling as described in claim 3, characterized in that, The split line (512) includes two segments (513) parallel to the second direction and a connecting segment (514) parallel to the third direction. The second direction is perpendicular to the first direction and perpendicular to the third direction. A plurality of auxiliary guide fixtures (5) are arranged along the second direction and operate synchronously.

5. The auxiliary guiding tooling as described in claim 3, characterized in that, Both of the splicing blocks (54) include a mounting part (541) and a replacement part (542). The replacement part (542) is detachably connected to the mounting part (541), and each set of the extension part (52) and the convergence hole (53) is formed by splicing two mutually cooperating replacement parts (542).

6. The auxiliary guiding tooling as described in claim 1, characterized in that, The diameter of the converging hole (53) is larger than the diameter of the inlet end (401) of the flexible tube (4), and the converging hole (53) is conical in shape and has a smooth inner wall.

7. A flexible tube straightening fixture, characterized in that, The device includes the auxiliary guide tooling (5) as described in any one of claims 1 to 6, and also includes the straightening core wire (2), the transfer plate (1), the feeding plate (3), and the mating part (6). The mating part (6) is detachably connected to the transfer plate (1), and the straightening core wire (2) is connected to the mating part (6). The inlet end (401) of the flexible tube (4) is supported by the feeding plate (3). The mating part (6) is mated to the inlet end (401) of the flexible tube (4) and is detachably connected to the inlet end (401) of the flexible tube (4).

8. The flexible tube straightening fixture as described in claim 7, characterized in that, The fitting component (6) has a mating section (63) that fits into the inlet end (401) of the flexible tube (4). The mating section (63) is used to be embedded into the flexible tube (4). A core wire channel (64) extending along the first direction and penetrating the mating section (63) is formed inside the fitting component (6). The straightening core wire (2) is partially embedded in the core wire channel (64) and is detachably connected to the core wire channel (64).

9. The flexible tube straightening fixture as described in claim 8, characterized in that, The core wire channel (64) includes a through section (641) and a snap-fit ​​section (642) connected to each other. The diameter of the through section (641) is smaller than the diameter of the snap-fit ​​section (642), and the snap-fit ​​section (642) is connected to the end of the mating member (6) near the feed plate (3). The straight core wire (2) expands near its end to form a friction part (23) with a diameter that matches the snap-fit ​​section (642). The friction part (23) enters the snap-fit ​​section (642) from the through section (641) and snaps into the snap-fit ​​section (642).

10. The flexible tube straightening fixture as described in claim 8, characterized in that, The flexible tube (4) includes a body (41) and a connection port (42). The connection port (42) is a rigid structure with openings at both ends, including an interface section (421) and a tube section (422). The tube section (422) is connected to the body (41). The interface section (421) is the inlet end (401) of the flexible tube (4), and its inner wall is detachably connected to the outer wall of the mating section (63) of the mating member (6).

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