Welding auxiliary jig and assembly process of bent section and capillary tube for endoscope

Abstract

The invention discloses a welding auxiliary jig and an assembly process of a bent section and a capillary tube for an endoscope. The welding auxiliary jig comprises a fixing block, a welding limiting piece and an identification piece, a limiting channel is formed in the fixing block, and the limiting channel is provided with a first channel end and a second channel end; one end of the welding limiting piece protrudes out of the first channel end so that one end of the bent section can be fixed to the welding limiting piece, a guide channel is defined between the welding limiting piece and the limiting channel, and the capillary tube can penetrate through the guide channel. One end of the capillary tube penetrates out of the first channel end and then abuts against the buckle of the bent section fixed to the welding limiting piece, and the other end of the capillary tube protrudes out of the second channel end. The marking piece is used for marking the length of the capillary extending out of the second channel end of the limiting channel. The assembly operation of the capillary tube and the bending section is simpler, the size and fixing firmness of the capillary tube are better guaranteed, a better bending angle is guaranteed, and therefore the quality of the endoscope is improved.

Description

Technical Field

[0001] The present invention relates to the technical field of jigs, and in particular to an auxiliary welding jig and an assembly process of a bending section and a capillary tube for an endoscope. Background Art

[0002] As a minimally invasive medical device for inspection and treatment, endoscopes are mainly used to diagnose and treat a variety of diseases. By entering the body through natural channels of the human body or through small surgical incisions, doctors can clearly observe the internal conditions, diagnose a variety of diseases, and perform various auxiliary treatments, such as polypectomy and lithotripsy. An endoscope is generally composed of an eyepiece, an operating part, an insertion part, a bending part, and a front end. The bending section is achieved through a bendable snake bone. The two sides of the snake bone are stretched by traction wires to achieve the bending function. The capillary is wrapped around the outer layer of the traction wire to protect the traction wire.

[0003] There is no fixed structure between the existing capillary and the bending section. The capillary is fixed by holding the front end of the capillary with the help of the last clip at the tail of the bending section. If the capillary cannot reach the end, the S-bend of the insertion part will be warped, resulting in a loss of the bending angle, and the capillary will easily become loose and move. Summary of the invention

[0004] In order to solve the above technical problems, the main purpose of the present invention is to provide a welding auxiliary fixture and an assembly process of a bending section and a capillary for an endoscope, aiming to solve the problem that the traditional assembly method of the capillary and the bending section is unreliable, easy to loosen, and easily causes a loss of bending angle.

[0005] In order to achieve the above object, the present invention provides a welding auxiliary jig suitable for connecting a capillary tube and a bending section, and the welding auxiliary jig includes:

[0006] A fixed block, wherein a limiting channel is formed on the fixed block, and the limiting channel has a first channel end and a second channel end which are arranged opposite to each other;

[0007] A welding stopper is inserted into the stopper channel, one end of the welding stopper protrudes from the first channel end so as to be suitable for fixing one end of the bending section thereon, a guide channel is defined between the welding stopper and the stopper channel, the guide channel is suitable for a capillary tube to pass therethrough, and one end of the capillary tube is in contact with a buckle of the bending section fixed on the welding stopper after passing through the first channel end, and the other end is protruded from the second channel end;

[0008] The identification member is used to identify the length of the capillary extending out of the second channel end of the limiting channel.

[0009] Optionally, the fixed block includes a first block body and a second block body connected to each other, and the first block body and the second block body are respectively provided with a first limiting groove and a second limiting groove on one side opposite to each other, the first limiting groove and the second limiting groove both extend along the first direction, and are open at both ends along the first direction, and the notch of the first limiting groove and the notch of the second limiting groove are opposite to each other to jointly enclose the limiting channel.

[0010] Optionally, the welding limiter comprises a welding backing rod, which is passed through the limiter channel, has one end protruding from the first channel end so as to allow the bending section to be sleeved thereon, and has the other end flush with the second channel end.

[0011] Optionally, the welding backing rod includes a first rod body and a second rod body that are arranged opposite to each other, the first rod body is accommodated in the first limiting groove and matched with the first limiting groove, and the second rod body is accommodated in the second limiting groove and matched with the second limiting groove.

[0012] Optionally, at least one guide channel is defined between the welding backing rod and the limiting channel, each guide channel is extended along the first direction of the fixing block, and each guide channel is suitable for allowing a capillary to pass therethrough.

[0013] Optionally, a first clearance groove is provided on a side of the first rod body facing away from the notch of the first limiting groove, and the first clearance groove extends along the first direction to define a guide channel between the first limiting groove and the first limiting groove;

[0014] A second clearance groove is provided on one side of the second rod body facing away from the notch of the second limiting groove. The second clearance groove extends along the first direction to define another guide channel between the second limiting groove and the second limiting groove.

[0015] Optionally, the identification member includes a first scale protruding from the second end of the first block, and a second scale protruding from the second end of the second block, the first scale is located on one side of the first limiting groove, the second scale is located on one side of the second limiting groove, and the first scale and the second scale are arranged opposite to each other.

[0016] Optionally, the first scale is integrally provided with the first block, and the second scale is integrally provided with the second block.

[0017] Optionally, a first anti-foolproofing protrusion is protruding from one side of the first block, and a second anti-foolproofing protrusion is protruding from one side of the second block. The first anti-foolproofing protrusion and the second anti-foolproofing protrusion are located on the same side and are relatively fitted to be suitable for being clamped in the clamping groove of the bending section.

[0018] The present invention also provides an assembly process of a bending section and a capillary tube, using the above-mentioned welding auxiliary jig, the welding auxiliary jig comprises a fixed block, a welding limiter, and an identification member, a limit channel is formed on the fixed block, the welding limiter is arranged in the limit channel, and one end of the welding limiter protrudes from the first channel end of the limit channel;

[0019] The assembly process comprises the following steps:

[0020] Provide the welding auxiliary jig and the bending section, and fix one end of the bending section to one end of the welding limiting member protruding from the limiting channel;

[0021] Providing a plurality of capillaries, and correspondingly inserting the plurality of capillaries into the plurality of guide channels of the welding auxiliary fixture one by one, so that each capillary is inserted from the second channel end of the limiting channel toward the first channel end, and after each capillary passes through the limiting channel from the first channel end, it is inserted into the curved section and abuts against the corresponding buckle end of the curved section;

[0022] Observe the identification member and cut the length of the capillary protruding from the second channel end of the limiting channel according to a preset length;

[0023] Welding capillaries and bends.

[0024] The technical solution provided by the present invention has the following beneficial effects:

[0025] The welding auxiliary jig provided by the present invention is used for assembling and connecting a capillary tube and a curved section, wherein the welding auxiliary jig comprises a fixed block, a welding limiter and an identification member, a limit channel is formed on the fixed block, the welding limiter is passed through the limit channel, and one end protrudes from the first channel end of the limit channel, so that one end of the curved section can be fixed on the welding limiter, and the curved section can be kept in a straight shape; and the welding limiter can also define a guide channel between the limit channel, through which the capillary tube can pass. , and under the guidance of the guide channel, the capillary can be inserted into the curved section, so that when the capillary abuts against the buckle in the curved section, it indicates that the capillary is plugged in place; and then the identification piece can be used to identify the length of the other end of the capillary extending out of the limiting channel, so that according to different endoscopes, the capillary has a preset length, and then the capillary is cut according to the identification piece to better ensure that the length of the capillary matches the traction rope, and then the part of the capillary extending into the curved section is welded and fixed to the curved section to ensure that the capillary is not easy to loosen. The welding auxiliary jig makes the assembly operation of the capillary and the curved section simpler, and can better ensure the size and fixation reliability of the capillary, ensure a better bending angle, and thus better improve the quality of the endoscope. BRIEF DESCRIPTION OF THE DRAWINGS

[0026] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on the structures shown in these drawings without paying creative work.

[0027] Figure 1 A schematic structural diagram of an embodiment of a welding auxiliary jig provided by the present invention;

[0028] Figure 2 for Figure 1 A schematic cross-sectional structure diagram of the welding auxiliary fixture described in;

[0029] Figure 3 for Figure 2 A schematic diagram of the enlarged structure of detail A;

[0030] Figure 4 for Figure 1 A schematic diagram of an exploded structure of the welding auxiliary fixture described in;

[0031] Figure 5 for Figure 4 A schematic diagram of the decomposed structure of the welding auxiliary fixture from another perspective;

[0032] Figure 6 for Figure 1 A partial structural schematic diagram of the welding auxiliary fixture described in;

[0033] Figure 7 The present invention is a schematic flow chart of an embodiment of an assembly process of a bending section and a capillary tube provided by the present invention.

[0034] Description of Figure Numbers:

[0035] 100-welding auxiliary fixture; 1-fixed block; 11-first block; 111-first limiting groove; 112-positioning protrusion; 113-first fool-proofing protrusion; 12-second block; 121-second limiting groove; 122-positioning hole; 123-second fool-proofing protrusion; 2-welding limiting piece; 21-welding backing rod; 211-first rod body; 2111-first make way groove; 212-second rod body; 2121-second make way groove; 3-identification piece; 31-first scale; 32-second scale; 200-capillary; 300-bending section; 301-serpentine; 302-buckle.

[0036] The realization of the purpose, functional characteristics and excellent effects of the present invention will be further described below in conjunction with specific embodiments and drawings. DETAILED DESCRIPTION

[0037] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0038] It should be noted that if a directional indication is involved in the embodiment of the present invention, the directional indication is only used to explain the relative position relationship, movement status, etc. between the components in a certain specific posture. If the specific posture changes, the directional indication will also change accordingly.

[0039] In addition, if there are descriptions involving "first", "second", etc. in the embodiments of the present invention, the descriptions of "first", "second", etc. are only used for descriptive purposes and cannot be understood as indicating or implying their relative importance or implicitly indicating the number of technical features indicated. Therefore, the features defined as "first" and "second" may explicitly or implicitly include at least one of the features. In addition, the meaning of "and / or" appearing in the full text includes three parallel schemes. Taking "A and / or B" as an example, it includes scheme A, or scheme B, or a scheme that satisfies both A and B. In addition, the technical solutions between the various embodiments can be combined with each other, but it must be based on the ability of ordinary technicians in the field to implement. When the combination of technical solutions is contradictory or cannot be implemented, it should be deemed that such a combination of technical solutions does not exist and is not within the scope of protection required by the present invention.

[0040] The present invention provides a welding auxiliary fixture 100, combined with Figure 1 , Figure 4 and Figure 5 As shown, the welding auxiliary fixture 100 is suitable for connecting a capillary 200 and a bending section 300. The capillary 200 is a flexible tube. The bending section 300 includes a coil 301 and a buckle 302. The buckle 302 is clamped on the inner side of the coil 301. One end of the capillary 200 can abut against the corresponding end of the buckle 302. The end of the capillary 200 is limited by the buckle 302.

[0041] Specifically, see Figure 1 and Figure 2 In this embodiment, the welding auxiliary fixture 100 includes a fixing block 1, a welding limiter 2 and an identification member 3. A limit channel is formed on the fixing block 1, and the limit channel has a first channel end and a second channel end that are arranged opposite to each other; the welding limiter 2 is arranged in the limit channel, and one end of the welding limiter 2 protrudes from the first channel end and is suitable for fixing one end of the bending section 300 thereon. A guide channel is defined between the welding limiter 2 and the limit channel, and the guide channel is suitable for the capillary 200 to pass through it, so that one end of the capillary 200 is abutted against the buckle 302 of the bending section 300 fixed on the welding limiter 2 after passing through the first channel end, and the other end is protruded from the second channel end; the identification member 3 is used to identify the length of the capillary 200 extending out of the second channel end of the limit channel.

[0042] In this embodiment, a limiting channel is formed on the fixing block 1, and the welding limiting member 2 is inserted into the limiting channel, and one end of the welding limiting member 2 protrudes from the first channel end of the limiting channel, so that one end of the bending section 300 can be fixed on the welding limiting member 2, and the bending section 300 can be kept straight; and the welding limiting member 2 can also define a guide channel between the limiting channel, through which the capillary 200 can be inserted, and under the guiding effect of the guide channel, the capillary 200 can be inserted into the bending section 300 to be fixed in the welding limiting member 2. When the capillary 200 abuts against the buckle 302 in the curved section 300, it indicates that the capillary 200 is plugged in place; and then the identification piece 3 can be used to identify the length of the other end of the capillary 200 extending out of the limiting channel, so that the capillary 200 has a preset length according to different endoscopes, and then the capillary 200 is cut according to the identification piece 3 to better ensure that the length of the capillary 200 matches the traction rope, and then the part of the capillary 200 extending into the curved section 300 is welded and fixed to the curved section 300 to ensure that the capillary 200 is not easy to loosen. The welding auxiliary jig 100 makes the assembly operation of the capillary 200 and the curved section 300 simpler, and can better ensure the size and fixation reliability of the capillary 200, ensure a better bending angle, and thus better improve the quality of the endoscope.

[0043] Preferably, the limiting channel is arranged in a straight line, so that the capillary 200 is arranged in a straight line when inserted into the limiting channel, the insertion operation is smoother, and the length of the capillary 200 can be well determined.

[0044] The shape and size of the fixing block 1 are not specifically limited and can be adaptively set according to the actual size of the capillary 200 and the bending section 300. Figure 4 and Figure 5 As shown, the fixed block 1 includes a first block body 11 and a second block body 12 connected to each other, and the first block body 11 and the second block body 12 are respectively provided with a first limiting groove 111 and a second limiting groove 121 on one side opposite to each other, and the first limiting groove 111 and the second limiting groove 121 both extend along the first direction, and are open at both ends along the first direction, and the notch of the first limiting groove 111 and the notch of the second limiting groove 121 are opposite to each other to jointly enclose the limiting channel, so that the welding limiting member 2 is more convenient to be fixed in the limiting channel, and it is convenient to maintain each of the blocks to avoid blockage of the limiting channel.

[0045] Preferably, the first block 11 and the second block 12 have the same shape and size and are both arranged in a square shape. The first direction is one of the directions of the horizontal plane. Specifically, the first direction may refer to the left-right direction or the front-back direction along the fixed block 1. In the following, unless otherwise specified, the first direction is taken as the left-right direction for example. When the welding auxiliary jig 100 is used normally, the first block 11 is set to be above the second block 12.

[0046] The first block 11 and the second block 12 are detachably connected. Figure 4 and Figure 5 As shown, one of the first block 11 and the second block 12 is provided with a plurality of positioning protrusions 112, and the other is provided with a plurality of positioning holes 122, and the plurality of positioning protrusions 112 and the plurality of positioning holes 122 are plugged and arranged in a one-to-one correspondence. Moreover, the first block 11 and the second block 12 can also be connected and fixed by screws, bolts, etc., which are inserted into the corresponding screw holes on the positioning protrusions 112 and the positioning holes 122, so as to prevent the first block 11 and the second block 12 from moving relative to each other.

[0047] Moreover, the plurality of positioning holes 122 are arranged in an array, and the distances between two adjacent rows of positioning holes 122 are set differently. Since the shapes and sizes of the first block 11 and the second block 12 are relatively similar, by setting the hole spacings in the two rows to be inconsistent, it is possible to better avoid misalignment and the wrong direction of installation of the first block 11 and the second block 12.

[0048] In one embodiment, the welding auxiliary fixture 100 may also include a plurality of auxiliary gaskets. When the model of the endoscope changes, the diameter of the corresponding bending section 300 may change accordingly. Therefore, one or more of the auxiliary gaskets may be stacked between the first block 11 and the second block 12, and a receiving groove is provided on the first auxiliary gasket, each receiving groove may be received in the corresponding first limiting groove 111 and the second limiting groove 121, and the diameter of the receiving grooves on the plurality of auxiliary gaskets may be arranged in a progressive manner, and two auxiliary gaskets having receiving grooves of the same diameter are placed on the corresponding first block 11 and the second block 12, and the two receiving grooves jointly form the limiting channel. According to the different sizes of the receiving grooves of the padded auxiliary gaskets, the diameter of the limiting channel may be adjusted, so that the limiting channel may match the welding limiting rods of different diameters to meet the connection requirements of different bending sections 300, and the application range is wider.

[0049] In another embodiment, a plurality of first limiting grooves 111 may be provided on the first block 11, and the plurality of first limiting grooves 111 are arranged at intervals along the front-to-back direction; a plurality of second limiting grooves 121 may be provided on the second block 12, and the plurality of second limiting grooves 121 are arranged at intervals along the front-to-back direction and are arranged in a one-to-one correspondence with the plurality of first limiting grooves 111.

[0050] Among them, the diameters of multiple first limiting grooves 111 and the diameters of multiple first limiting grooves 111 can be set consistently, so that the welding auxiliary fixture 100 can simultaneously perform connection operations of multiple groups of capillaries 200 and bending sections 300, which is more efficient.

[0051] In another embodiment, the diameters of the plurality of first limiting grooves 111 are set differently, and the diameters of the plurality of second limiting grooves 121 are also set differently, so that the welding auxiliary fixture 100 can better adapt to the connection requirements of capillaries 200 and bending sections 300 of different sizes.

[0052] Specifically, for the welding stopper 2, the welding stopper 2 includes a welding lining rod 21, which is inserted into the stopper channel, and one end of the welding lining rod 21 protrudes from the first channel end so as to be suitable for the bending section 300 to be sleeved thereon, and the other end is flush with the second channel end. The welding lining rod 21 is generally cylindrical and matches the shape of the stopper channel so as to be clamped in the stopper channel.

[0053] Combination Figure 4 and Figure 5 As shown, when the fixing block 1 includes the first block 11 and the second block 12, the welding backing rod 21 includes a first rod 211 and a second rod 212 which are arranged opposite to each other, the first rod 211 is accommodated in the first limiting groove 111 and matches with the first limiting groove 111, and the second rod 212 is accommodated in the second limiting groove 121 and matches with the second limiting groove 121. During assembly, the first rod 211 can be fixed in the first limiting groove 111, and the second rod 212 can be fixed in the second limiting groove 121, and then the first block 11 and the second block 12 can be connected, so that the relative positions of the first rod 211 and the second rod 212 are fixed, and then the alignment with the bending section 300 is more accurate when the capillary 200 is passed through.

[0054] Furthermore, at least one guide channel is defined between the welding backing rod 21 and the limiting channel, each guide channel is extended along the first direction of the fixed block 1, and each guide channel is suitable for a capillary 200 to pass through. When a plurality of traction ropes are provided corresponding to the bending section 300, a plurality of capillaries 200 are also provided. By defining a plurality of guide channels between the welding backing rod 21 and the limiting channel, it is ensured that a plurality of capillaries 200 can all pass into the bending section 300 under the guiding action of the guide channels, and abut against the buckle 302 in the bending section 300. Specifically, each capillary 200 can extend into the buckle hole of the buckle 302.

[0055] Preferably, combined Figure 4 and Figure 5 As shown, when there are two capillaries 200, a first clearance groove 2111 is provided on the side of the first rod 211 facing away from the notch of the first limiting groove 111, and the first clearance groove 2111 extends along the first direction to define a guide channel with the first limiting groove 111; a second clearance groove 2121 is provided on the side of the second rod 212 facing away from the notch of the second limiting groove 121, and the second clearance groove 2121 extends along the first direction to define another guide channel with the second limiting groove 121. The two guide channels can guide the two capillaries 200 respectively to ensure the relative positions of the two capillaries 200, and enable the two capillaries 200 to better connect with the corresponding buckles 302.

[0056] Of course, when the types of endoscopes are different and the bending directions of the corresponding bending sections 300 are more diverse, the number of corresponding guide channels will also change accordingly. For example, when four traction ropes are provided to pull the bending section 300, the number of corresponding capillaries 200 is also four. Four clearance grooves can be evenly spaced in the lateral direction of the welding lining rod 21, and the notches of each clearance groove face the inner side wall of the limiting channel, and the guide channel is formed between each clearance groove and the inner side wall of the limiting channel. The arrangement of the welding lining rod 21 is more flexible and diverse. Moreover, the welding lining rod 21 is arranged as a first rod body 211 and a second rod body 212, so that when the size of the corresponding first limiting groove 111 and the second limiting groove 121 changes, the first rod body 211 and the second rod body 212 can be replaced without replacing the entire fixed block 1, which is lower in cost and more convenient to use.

[0057] As for the identification member 3, the identification member 3 is used to obtain the length of the capillary 200 extending from the left end of the limiting channel, so as to determine the retention length of the capillary 200. Figure 2 , Figure 4 and Figure 5 As shown, the identification member 3 includes a first scale 31 protruding from the second end of the first block 11, and a second scale 32 protruding from the second end of the second block 12, the first scale 31 is located on one side of the first limiting groove 111, the second scale 32 is located on one side of the second limiting groove 121, and the first scale 31 and the second scale 32 are arranged opposite to each other. Preferably, the first scale 31 and the second scale 32 are arranged on the left side of the fixed block 1, and the first scale 31 and the second scale 32 are arranged opposite to each other in the up and down direction. On the one hand, the two scales can refer to each other to ensure the accuracy of measurement, and on the other hand, when two capillaries 200 are provided, the first scale 31 and the second scale 32 can be used to measure the two capillaries 200 respectively, which is more efficient.

[0058] The setting method of the identification member 3 includes but is not limited to the above. In other embodiments, the identification member 3 can also be set as an electronic ruler, or as a scale mark. For example, a marking plate is convexly provided on the left side of the fixed block 1. When corresponding to a bile and pancreas endoscope, a 1# marking line is engraved on the marking plate, and when corresponding to a gastrointestinal endoscope, a 2# marking line is engraved on the marking plate. In this way, corresponding marks can be made for different endoscopes to indicate the corresponding length position of the left end of the corresponding capillary 200, so as to mark the cutting position more intuitively and clearly.

[0059] Preferably, the first scale 31 is integrally provided with the first block 11, and the second scale 32 is integrally provided with the second block 12. The relative positions between the first scale 31, the second scale 32 and the fixed block 1 are ensured to be more accurate, so that the measurement of the capillary 200 is more accurate. The scale values ​​of the first scale 31 and the second scale 32 are consistent, and the starting scales of the first scale 31 and the second scale 32 can start from the left end face of the fixed block 1, or the starting scales of the first scale 31 and the second scale 32 can start from the right end face of the fixed block 1, so as to ensure that there is a fixed reference starting surface.

[0060] Of course, in other embodiments, the identification member 3 can also be detachably arranged on the fixed block 1. Specifically, the identification member 3 can be set as a plurality of scale rods of different lengths, and each of the scale rods can be screwed, magnetically attracted, or clamped on the left side of the fixed block 1. Similar to the principle of the above-mentioned marking plate, different scale rods can be used to correspond to different models of endoscopes, thereby calibrating the length of the capillary tube.

[0061] Moreover, if Figure 6As shown in , a first fool-proofing protrusion 113 is protruded on one side of the first block 11, and a second fool-proofing protrusion 123 is protruded on one side of the second block 12. The first fool-proofing protrusion 113 and the second fool-proofing protrusion 123 are located on the same side and are relatively fitted to be suitable for being clamped in the clamping groove of the curved section 300. Preferably, the first fool-proofing protrusion 113 and the second fool-proofing protrusion 123 are both protruded on the right side of the fixed block 1. When assembling the first block 11 and the second block 12, the relative directions of the first block 11 and the second block 12 can be found more quickly through the first fool-proofing protrusion 113 and the second fool-proofing protrusion 123, thereby improving the assembly efficiency. Figure 3 and Figure 6 As shown, a slot is provided on one side of the left end of the coiled tube 301. When installing the bending section 300, the side with the slot can be clamped on the outer side of the first anti-foolproof protrusion 113 and the second anti-foolproof protrusion 123 to align the bending section 300 in the circumferential direction, thereby ensuring that the capillary 200 can better abut against the buckle 302 of the bending section 300 when extending into the bending section 300.

[0062] The present invention also provides an assembly process of a curved section 300 for an endoscope and a capillary tube 200, by using the above-mentioned welding auxiliary fixture 100, specifically, in combination with Figure 7 As shown, the assembly process includes the following steps:

[0063] S100, providing the welding auxiliary jig 100 and the bending section 300, and fixing one end of the bending section 300 to one end of the welding limiting member 2 protruding from the limiting channel;

[0064] S200, providing a plurality of capillaries 200, and inserting the plurality of capillaries 200 into the plurality of guide channels of the welding auxiliary fixture 100 one by one, so that each capillary 200 is inserted from the second channel end of the limiting channel toward the first channel end, and after each capillary 200 passes through the limiting channel from the first channel end, it penetrates into the curved section 300 and abuts against the corresponding buckle 302 end of the curved section 300;

[0065] S300, observing the identification member 3, and cutting the length of the capillary 200 protruding from the second channel end of the limiting channel according to a preset length;

[0066] S400 , welding the capillary 200 and the curved section 300 .

[0067] In this embodiment, when assembling the bending section 300 and the capillary 200, specifically, two capillaries 200 are provided for specific description. First, one end of the coil 301 of the bending section 300 is sleeved on the end of the welding limiter 2 protruding from the right side of the limit channel. Specifically, the coil 301 is sleeved on the outside of the first rod 211 and the second rod 212, and the side of the coil 301 with the slot is clamped with the side of the welding auxiliary fixture 100 with the first anti-fool protrusion 113 and the second anti-fool protrusion 123. On the one hand, the insertion depth of the coil 301 on the first rod 211 and the second rod 212 can be limited, and on the other hand, the circumferential orientation of the coil 301 when installed can be limited. After the bending section 300 is installed in place, two capillaries 200 are installed one by one, and each capillary 200 is inserted from left to right into the guide channel of the welding auxiliary fixture 100. After each capillary 200 passes through the right end of the limiting channel, the capillary 200 is continuously inserted, so that when the right end of the capillary 200 can no longer move forward, it indicates that the capillary 200 is in contact with the buckle 302 and has been installed in place. After multiple capillaries 200 are installed in place, the length of the left end of the capillary 200 extending out of the limiting channel is measured to cut the capillary 200 according to the preset length, and finally the part of the capillary 200 located inside the bending section 300 is welded to the bending section 300, thereby completing the assembly of the bending section 300 and the capillary 200.

[0068] Moreover, after step S400, the following steps may also be included:

[0069] The welding auxiliary jig 100 is moved along the direction from the second channel end of the limiting channel toward the first channel end, so that the welding auxiliary jig 100 is pulled out from the assembled product of the bending section 300 and the capillary 200 .

[0070] After the bending section 300 and the capillary 200 are assembled, when disassembling the welding auxiliary jig 100, it is only necessary to move the welding auxiliary jig 100 along the second channel end of the limiting channel toward the first channel end, that is, along the left direction, to pull out the welding auxiliary jig 100. The assembled product of the bending section 300 and the capillary 200 is easier to take out and easier to operate. Moreover, without disassembling the welding auxiliary jig 100, the next assembly procedure can be entered faster, which makes the assembly efficiency higher.

[0071] The above description is only a preferred embodiment of the present invention, and does not limit the patent scope of the present invention. Any equivalent structure made using the contents of the present invention specification and drawings, or directly or indirectly used in other related technical fields, is also included in the patent protection scope of the present invention.

Claims

1. A welding auxiliary fixture, suitable for connecting the capillary and the curved section of an endoscope, characterized in that: The welding auxiliary fixture comprises: A fixed block, wherein a limiting channel is formed on the fixed block, and the limiting channel has a first channel end and a second channel end which are arranged opposite to each other; A welding stopper is inserted into the stopper channel, one end of the welding stopper protrudes from the first channel end so as to be suitable for fixing one end of the bending section thereon, a guide channel is defined between the welding stopper and the stopper channel, the guide channel is suitable for a capillary tube to pass therethrough, and one end of the capillary tube is in contact with a buckle of the bending section fixed on the welding stopper after passing through the first channel end, and the other end is protruded from the second channel end; The identification member is used to identify the length of the capillary extending out of the second channel end of the limiting channel.

2. The welding auxiliary jig according to claim 1, characterized in that: The fixed block includes a first block body and a second block body connected to each other, and a first limiting groove and a second limiting groove are respectively provided on one side of the first block body and the second block body that are opposite to each other. The first limiting groove and the second limiting groove both extend along the first direction, and are open at both ends along the first direction. The notch of the first limiting groove and the notch of the second limiting groove are opposite to each other to jointly enclose the limiting channel.

3. The welding auxiliary jig according to claim 2, characterized in that: The welding limiter comprises a welding liner rod, which is inserted into the limiter channel, and one end of the welding liner rod protrudes from the first channel end so as to allow the bending section to be sleeved thereon, and the other end is flush with the second channel end.

4. The welding auxiliary jig according to claim 3, characterized in that: The welding backing rod includes a first rod body and a second rod body which are arranged opposite to each other. The first rod body is accommodated in the first limiting groove and matched with the first limiting groove. The second rod body is accommodated in the second limiting groove and matched with the second limiting groove.

5. The welding auxiliary jig according to claim 4, characterized in that: At least one guide channel is defined between the welding backing rod and the limiting channel. Each guide channel is extended along the first direction of the fixing block, and each guide channel is suitable for a capillary to pass through.

6. The welding auxiliary jig according to claim 5, characterized in that: A first clearance groove is provided on one side of the first rod body facing away from the notch of the first limiting groove, and the first clearance groove extends along the first direction to define a guide channel between the first limiting groove and the first limiting groove; A second clearance groove is provided on one side of the second rod body facing away from the notch of the second limiting groove. The second clearance groove extends along the first direction to define another guide channel between the second limiting groove and the second limiting groove.

7. The welding auxiliary jig according to claim 5, characterized in that: The identification member includes a first scale protruding from the second end of the first block, and a second scale protruding from the second end of the second block, the first scale is located on one side of the first limiting groove, the second scale is located on one side of the second limiting groove, and the first scale and the second scale are arranged opposite to each other.

8. The welding auxiliary jig according to claim 7, characterized in that: The first scale is integrally provided with the first block, and the second scale is integrally provided with the second block.

9. The welding auxiliary jig according to claim 2, characterized in that: A first fool-proofing protrusion is protruded from one side of the first block, and a second fool-proofing protrusion is protruded from one side of the second block. The first fool-proofing protrusion and the second fool-proofing protrusion are located on the same side and are relatively fitted to be suitable for being clamped in the clamping groove of the curved section.

10. A process for assembling a curved section and a capillary tube for an endoscope, characterized in that: Using the welding auxiliary jig according to any one of claims 1 to 10, the welding auxiliary jig comprises a fixing block, a welding limiter, and an identification member, a limit channel is formed on the fixing block, the welding limiter is arranged in the limit channel, and one end of the welding limiter is protruded from the first channel end of the limit channel; The assembly process comprises the following steps: Provide the welding auxiliary jig and the bending section, and fix one end of the bending section to one end of the welding limiting member protruding from the limiting channel; Providing a plurality of capillaries, and correspondingly inserting the plurality of capillaries into the plurality of guide channels of the welding auxiliary fixture one by one, so that each capillary is inserted from the second channel end of the limiting channel toward the first channel end, and after each capillary passes through the limiting channel from the first channel end, it is inserted into the curved section and abuts against the corresponding buckle end of the curved section; Observe the identification member and cut the length of the capillary protruding from the second channel end of the limiting channel according to a preset length; Welding capillaries and bends.

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