Welding tool

Abstract

The utility model provides a welding tool. The welding tool comprises a movement mechanism and a positioning part, wherein the movement mechanism comprises a movement platform, the movement platform comprises a first surface, and the movement platform can move in the direction perpendicular to the first surface; the positioning part comprises a first positioning plate; the first positioning plate is arranged on the first surface and comprises a second surface, and an angle is formed between the second surface and the first surface; the second surface is provided with a positioning groove and an indication mark, the positioning groove comprises a positioning section, and the indication mark is arranged corresponding to the positioning section. According to the application of the welding tool, the welding operation steps of an electrode base body and an electrode ring in target products such as nerve stimulation electrodes are simplified, and the welding quality is improved.

Description

Technical Field

[0001] The technical field of production and processing of medical devices specifically relates to a welding tool for welding an electrode substrate and an electrode ring. Background Art

[0002] For medical devices used in neuromodulation, such as implantable deep brain neurostimulators, neurostimulation electrodes, as the output end of stimulation, are an important part of such medical devices. Neurostimulation electrodes include an electrode base and an electrode ring, which is connected to the electrode base by laser welding. The welding quality plays a critical role in the performance of neurostimulation electrodes.

[0003] In the prior art, the welding of the electrode ring and the electrode substrate is performed manually. During the welding process, the welding position of the electrode ring and the electrode substrate is manually adjusted to the focal plane of the welding laser, and the relative orientation of the extension direction of the axis of the electrode substrate at the focal plane and the light emitting direction of the laser is adjusted so that the angle between the two reaches the expected value to improve the welding effect. Moreover, a plurality of electrode rings are usually arranged on an electrode substrate. After the welding of the current electrode ring is completed and before the welding of the next electrode ring, the position of the electrode substrate needs to be readjusted so that the welding position is at the focal plane of the laser, and the angle between the electrode substrate and the light emitting direction of the laser meets the expected angle. This working method has the disadvantages of cumbersome operation, low adjustment efficiency, low accuracy, and poor welding quality stability. Utility Model Content

[0004] The utility model aims to provide a welding tool, aiming to improve the welding efficiency and welding quality of an electrode ring and an electrode substrate.

[0005] To achieve the above-mentioned purpose, the utility model provides a welding tool, including a motion mechanism and a positioning part; wherein:

[0006] The motion mechanism comprises a motion platform, the motion platform comprises a first surface, and the motion platform can move in a direction perpendicular to the first surface;

[0007] The positioning portion includes a first positioning plate; the first positioning plate is arranged on the first surface and includes a second surface, and the second surface is arranged at an angle to the first surface; a positioning groove and an indicator mark are provided on the second surface, the positioning groove includes a positioning segment, and the indicator mark is arranged corresponding to the positioning segment.

[0008] Optionally, an extension direction of the positioning segment is perpendicular to an intersection line between a plane where the second surface is located and a plane where the first surface is located.

[0009] Optionally, the acute angle between the first surface and the second surface is 30° to 60°; and / or,

[0010] The first positioning plate is detachably disposed on the first surface.

[0011] Optionally, the positioning portion further includes a second positioning plate, and the second positioning plate is used to cover at least a portion of the positioning groove in an area other than the positioning section.

[0012] Optionally, the second positioning plate includes a third surface, the third surface is used to be arranged toward the second surface, and a buffer layer is provided on the third surface.

[0013] Optionally, one of the second surface and the second positioning plate is provided with a plurality of connection holes, and the other is provided with a plurality of connection columns, and each of the connection columns is used to be pluggably disposed in a corresponding connection hole.

[0014] Optionally, at least part of the connecting posts are interference fit with the corresponding connecting holes.

[0015] Optionally, the motion platform further includes a fourth surface, the fourth surface being arranged opposite to the first surface; the motion platform is further provided with a through hole extending from the fourth surface to the first surface, the through hole being communicated with the positioning groove;

[0016] The welding tool also includes a storage portion, which is connected to the fourth surface, and the storage portion and the fourth surface enclose a accommodating cavity, and the accommodating cavity is connected to the via hole; a through hole connected to the accommodating cavity is formed on the storage portion, and the through hole is located on the side of the via hole away from the first surface.

[0017] Optionally, the indicator mark is an indicator groove perpendicular to the positioning groove.

[0018] Optionally, the motion platform also includes a fourth surface, which is arranged opposite to the first surface; the motion mechanism also includes a base, a motion bracket and a driving unit; one end of the motion bracket is connected to the fourth surface, and the other end is connected to the base; the driving unit is arranged on the motion bracket and is used to drive the motion bracket to move, so as to drive the motion platform to move.

[0019] Compared with the prior art, the welding tool of the utility model has the following advantages:

[0020] The aforementioned welding tooling includes a moving mechanism and a positioning part; wherein, the moving mechanism includes a moving platform, the moving platform includes a first surface, and the moving platform can move in a direction perpendicular to the first surface; the positioning part includes a first positioning plate; the first positioning plate is arranged on the first surface and includes a second surface, and the second surface is arranged at an angle to the first surface; a positioning groove and an indication mark are provided on the second surface, the positioning groove includes a positioning segment, and the indication mark is arranged corresponding to the positioning segment to indicate the positioning segment. When the welding tool is used to assist in the laser welding operation of the electrode substrate and the electrode ring thereon, the first surface is made perpendicular to the light emitting direction of the laser, and the angle between the second surface and the first surface is set according to the expected angle between the extension direction of the axis of the electrode substrate at the welding position and the light emitting direction of the laser, and the position of the motion platform in the direction perpendicular to the first surface is adjusted according to the focal plane of the laser so that the indicator mark is on the focal plane of the laser. In this way, the positioning section is located in the focal plane of the laser. In this way, it is only necessary to place the electrode substrate in the positioning groove and set the welding position of the electrode substrate and the electrode ring to be welded in the positioning section, so that the electrode substrate and the electrode ring to be welded can be in the focal plane of the laser, and the angle between the extension direction of the axis of the electrode substrate at the welding position and the light emitting direction of the laser is the expected value, which has the advantages of easy use and good welding effect. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] The accompanying drawings are used to better understand the present invention and do not constitute an improper limitation on the present invention.

[0022] Figure 1 This is a schematic diagram of the overall structure of a welding tool provided by the utility model according to an embodiment;

[0023] Figure 2 It is a partial structural schematic diagram of a welding tool provided by the utility model according to an embodiment, and the positioning part is not shown in the figure;

[0024] Figure 3 It is a partial structural schematic diagram of a welding tool provided by the utility model according to an embodiment, and the figure shows a first positioning plate;

[0025] Figure 4 1 is a partial schematic diagram of a welding tool provided by the utility model according to an embodiment, in which an arrow S indicates the light emitting direction of the laser;

[0026] Figure 5 This is a schematic diagram of an application scenario of a welding tool provided by the utility model according to an embodiment;

[0027] Figure 6This is a schematic diagram of a local application scenario of a welding tool provided by the utility model according to an embodiment, in which the second positioning plate is not shown;

[0028] Figure 7 It is a partial structural schematic diagram of a welding tool provided by the utility model according to an embodiment, and the figure shows a second positioning plate;

[0029] Figure 8 This is a schematic diagram of a local application scenario of a welding tool provided by the utility model according to an embodiment, and a second positioning plate is shown in the figure.

[0030] [Description of reference numerals is as follows]:

[0031] 100-moving mechanism, 110-moving platform, 111-first surface, 112-through hole, 120-base, 130-moving bracket, 140-driving part, 200-positioning part, 210-first positioning plate, 201-second surface, 202-positioning groove, 202a-positioning section, 203-indicator mark, 204-plug-in hole, 205-plug-in column, 211-first plate body, 212-second plate body, 220-second positioning plate, 221-third surface, 300-storage part, 301-accommodating cavity, 302-through hole, 11-electrode substrate, 12-electrode ring. DETAILED DESCRIPTION

[0032] The following describes the implementation of the present invention through specific examples, and those skilled in the art can easily understand other advantages and effects of the present invention from the contents disclosed in this specification. The present invention can also be implemented or applied through other different specific implementations, and the details in this specification can also be modified or changed in various ways based on different viewpoints and applications without departing from the spirit of the present invention. It should be noted that the illustrations provided in this embodiment only illustrate the basic concept of the present invention in a schematic manner, so the diagram only shows the components related to the present invention rather than drawing according to the number, shape and size of the components in the actual implementation. The type, quantity and proportion of each component in the actual implementation can be a random change, and the component layout type may also be more complicated.

[0033] In addition, each embodiment of the following description has one or more technical features, but this does not mean that the user of the present invention must implement all the technical features in any embodiment at the same time, or can only implement part or all of the technical features in different embodiments separately. In other words, under the premise of being possible to implement, those skilled in the art can selectively implement part or all of the technical features in any embodiment according to the disclosure of the present invention and according to the design specifications or implementation requirements, or selectively implement a combination of part or all of the technical features in multiple embodiments, thereby increasing the flexibility of the implementation of the present invention.

[0034] As used in this specification, the singular forms "a", "an", and "the" include plural objects, and the plural form "plurality" includes more than two objects, unless the content clearly indicates otherwise. As used in this specification, the term "or" is generally used to include the meaning of "and / or", unless the content clearly indicates otherwise, and the terms "installed", "connected", and "connected" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection. It can be a mechanical connection or an electrical connection. It can be directly connected or indirectly connected through an intermediate medium, and it can be the internal connection of two elements or the interaction relationship between two elements. For those of ordinary skill in the art, the specific meanings of the above terms in the utility model can be understood according to the specific circumstances.

[0035] In order to make the purpose, advantages and features of the utility model clearer, the utility model is further described in detail below in conjunction with the accompanying drawings. It should be noted that the drawings are all in a very simplified form and are not in precise proportions, and are only used to conveniently and clearly assist in explaining the purpose of the embodiments of the utility model. The same or similar reference numerals in the drawings represent the same or similar components.

[0036] Figure 1 This is a schematic diagram of the overall structure of a welding tool provided by an embodiment of the utility model. Figures 2 to 4 This is a schematic diagram of different partial structures of the welding tool. Please refer to Figures 1 to 4 , the welding fixture includes a moving mechanism 100 and a positioning part 200. The moving mechanism 100 includes a moving platform 110, the moving platform 110 includes a first surface 111, and the moving platform 110 can move in a direction perpendicular to the first surface 111. The positioning part 200 includes a first positioning plate 210. The first positioning plate 210 is arranged on the first surface 111 and includes a second surface 201, and a positioning groove 202 and an indication mark 203 are arranged on the second surface 201, the positioning groove 202 includes a positioning segment 202a, and the indication mark 203 is arranged corresponding to the positioning segment 202a to indicate the positioning segment 202a.

[0037] The welding tool is used to perform laser welding on the target product to simplify the operation and improve the welding efficiency and welding quality. The target product includes but is not limited to a nerve stimulation electrode, a cardiac mapping catheter, a cardiac ablation catheter, a medical catheter with both cardiac mapping and ablation functions, etc. The target product includes an electrode substrate 11 and at least one electrode ring 12 (such as Figure 5 , Figure 6 and Figure 8As shown), laser welding the target product refers to connecting at least one of the electrode rings 12 to a corresponding position of the electrode substrate 11 by laser welding.

[0038] In an optional embodiment, the operation of performing laser welding on the target product includes the following steps:

[0039] Step S10: according to the welding requirements, the acute angle α between the extending direction of the axis of the electrode substrate 11 at the welding position and the emitting direction of the laser is set. Figure 4 The welding tool with appropriate parameters is selected based on the expected value of the second surface 201 and the first surface 111, specifically, the acute angle β (as shown in FIG. Figure 4 As shown) and the included angle α are complementary (ie, the sum of the acute angle β and the acute angle α is 90°). It should be understood that, during operation, the first surface 111 is perpendicular to the light emitting direction of the laser.

[0040] Step S20, adjusting the position of the motion platform 110 to adjust the position of the positioning portion 200, so that the indication mark 203 of the positioning groove 202 is in the focal plane of the laser, and at this time, the positioning segment 202a is located in the focal plane of the laser.

[0041] Step S30: partially disposing the electrode matrix 11 in the positioning groove 202. At this time, each electrode ring 12 is sleeved at a corresponding position of the electrode matrix 11 in an interference fit manner.

[0042] Step S40, moving the electrode substrate 11 so that the electrode ring 12 to be welded is located in the positioning section 202a of the positioning groove 202, so that the electrode ring 12 to be welded is located in the focal plane of the laser.

[0043] Step S50 , laser welding the current electrode ring 12 and the electrode substrate 11 .

[0044] Step S40 and step S50 are repeatedly performed until the welding of all the electrode rings 12 and the electrode substrate 11 is completed.

[0045] That is, when the welding jig is used to produce the target product, as long as the parameters of the welding jig are appropriate, it can be ensured that the angle between the extension direction of the axis of the electrode substrate 11 at the welding position and the light emitting direction of the laser is the expected value. Moreover, it is only necessary to adjust the position of the motion platform 110 and the positioning portion 200 once, and then adjust the position of the electrode substrate 11 so that the electrode ring 12 to be welded reaches the positioning section 202a, so that each of the electrode rings 12 to be welded can be welded with the electrode substrate 11 at the focal plane of the laser, and the adjustment method is simple and reliable. According to actual requirements, the expected value is 30° to 60° (that is, the angle of the acute angle α is 30° to 60°), for example, 30°, 45°, 60°.

[0046] Preferably, the extending direction of the positioning segment 202a is perpendicular to the intersection line of the plane where the second surface 201 is located and the plane where the first surface 111 is located. This arrangement makes it easier to make the angle between the extending direction of the axis of the electrode substrate 11 located at the positioning segment 202a at the welding position and the light emitting direction of the laser be the expected value.

[0047] Preferably, the first positioning plate 210 is detachably arranged on the first surface 111. In this way, the motion mechanism 100 is a universal mechanism. Before each welding, it is only necessary to select a suitable first positioning plate 210 according to the expected value of the angle between the electrode substrate 11 and the light emitting direction of the laser. Figure 1 , Figures 3 to 6 The first positioning plate 210 includes a first plate body 211 and a second plate body 212. The first plate body 211 includes the second surface 201. The second plate body 212 is connected to the first plate body 211 and is detachably connected to the first surface 111. The present invention does not limit the connection method between the second plate body 212 and the first surface 111. For example, the second plate body 212 and the first surface 111 are connected by screws (not marked in the figure), or the second plate body 212 and the first surface 111 are clamped, or the second plate body 212 and the first surface 111 are plugged.

[0048] In addition, the embodiment of the utility model has no special limitation on the indicating mark 203 indicating the positioning segment 202a, which can be an indicating groove perpendicular to the positioning groove 202, or other forms of markings, such as colored graphics, engraved lines, or raised structures.

[0049] Generally, the laser emits light from top to bottom, so the first surface 111 is the upper plane of the motion platform 110, and the motion platform 110 can move along the vertical direction to rise or fall. In other words, the motion mechanism 100 is a lifting mechanism.

[0050] The motion platform 110 further includes a fourth surface (not marked in the figure), which is arranged opposite to the first surface 111, that is, the fourth surface is the lower plane of the motion platform 100. The motion mechanism 100 further includes a base 120, a motion bracket 130 and a driving unit 140. One end of the motion bracket 130 is connected to the fourth surface, and the other end is connected to the base 120. The driving unit 140 is arranged on the motion bracket 130 and is used to drive the motion bracket 130 to move, so as to drive the motion platform 110 to rise and fall. In a specific embodiment, the lifting mechanism is a scissor-type manual lifting mechanism, which has the advantages of small size, convenient operation and low price. In this case, the driving unit 140 is a manual driving mechanism. It can be understood that the scissor-type manual lifting mechanism is a prior art, and its specific structure is well known in the art, and is not repeated here. It can also be understood that in an alternative embodiment, the driving unit 130 may include a power mechanism such as a hydraulic cylinder, a pneumatic cylinder or a motor, as long as it can drive the lifting bracket 130 to move.

[0051] Of course, in alternative implementations, the laser light emission direction may also be from bottom to top, or in a horizontal direction.

[0052] Furthermore, if Figure 1 , Figure 7 and Figure 8 As shown, the positioning portion 200 further includes a second positioning plate 220, and the second positioning plate 220 is used to cover at least a portion of the area of ​​the positioning groove 202 except the positioning section 202a, that is, the second positioning plate 220 can cover any area of ​​the positioning groove 202 except the positioning section 202a. In this way, the second positioning plate 220 can be pressed against the electrode substrate 11 under the action of its own weight to improve the positioning stability of the portion of the electrode substrate 11 located in the positioning groove 202, and prevent the electrode substrate 11 from shifting during welding and causing the problem of inaccurate welding position.

[0053] In this case, when executing step S20, the second positioning plate 220 should also be released from covering the positioning groove 202. Step S30 also includes pressing the second positioning plate 220 against the electrode substrate 11.

[0054] The second positioning plate 220 includes a third surface 221, and a buffer layer (not shown in the figure) is provided on the third surface 221. During operation, the third surface 221 is arranged toward the second surface 201, and the buffer layer is in contact with the electrode substrate 11. The buffer layer is made of a soft material such as silica gel and foam glue. Such a setting can, on the one hand, increase the friction between the second positioning plate and the electrode substrate 11 to improve the positioning effect of the electrode substrate 11, and on the other hand, can also prevent the second positioning plate 220 from causing damage to the electrode substrate 11.

[0055] In some optional embodiments, the second positioning plate 220 is detachably connected to the first positioning plate 210. For example, Figure 3 , Figure 6 and Figure 7 As shown, one of the second surface 201 and the third surface is provided with a plurality of plug-in holes 204, and the other is provided with a plurality of plug-in posts 205. For example, the second surface 201 is provided with the plug-in holes 204, and the third surface 221 is provided with the plug-in posts 205. The number of the plug-in posts 205 is not more than the number of the plug-in holes 204, and each of the plug-in posts 205 is provided corresponding to one of the plug-in holes 204. When each of the plug-in posts 205 is inserted into a corresponding one of the plug-in holes 204, the second positioning plate 220 is connected to the first positioning plate 210. When all of the plug-in posts 205 are pulled out of the corresponding plug-in holes 204, the second positioning plate 220 is disconnected from the first positioning plate 210.

[0056] Preferably, when each of the plug-in columns 205 is inserted into the corresponding plug-in hole 204 , at least part of the plug-in columns 205 are interference fit with the corresponding plug-in hole 204 , so as to improve the connection reliability between the second positioning plate 220 and the first positioning plate 210 .

[0057] In other embodiments, the second positioning plate 220 is inseparably connected to the first positioning plate 210. For example, the second positioning plate is connected to the first positioning plate via a hinge so that a flip structure is formed between the second positioning plate and the second surface (not shown in the figure).

[0058] It can be understood that the second positioning plate 220 is not a necessary structure and can be omitted. For example, in some optional implementations, when the electrode substrate 11 is partially disposed in the positioning groove 202 and the electrode substrate 11 and the positioning groove 202 are interference fit, the portion of the electrode substrate 11 located in the positioning groove 202 can be kept in position under the action of the squeezing force between the electrode substrate 11 and the groove wall of the positioning groove 202.

[0059] Please refer to Figure 1 , Figure 2 , Figure 5 , Figure 6 and Figure 8 The motion platform 110 is also provided with a through hole 112 extending from the first surface 111 to the fourth surface. In the extension direction of the intersection line of the plane where the first surface 111 is located and the plane where the second surface 201 is located, the through hole 112 is connected to the positioning groove 202. In addition, the welding tool also includes a receiving portion 300, which is connected to the fourth surface and also encloses a receiving cavity 301 ((such as Figure 6 The storage portion 300 is also provided with a through hole 302 (as shown in FIG. Figure 1 ), the through hole 302 is connected to the accommodating cavity 301, and the through hole 301 is located on the side of the through hole 112 away from the first surface 201. In a typical embodiment, the shape of the receiving portion 300 on the predetermined cross section is U-shaped, and the opening of the U-shape faces the fourth surface. The predetermined cross section is perpendicular to the fourth surface and parallel to the intersection line of the plane where the first surface 111 is located and the plane where the second surface 201 is located.

[0060] The reason for providing the storage portion 300 is that the electrode substrate 11 is thin and long, and has a proximal end and a distal end connected axially, and the section of the electrode substrate 11 adjacent to the distal end is an electrode ring loading section, and at least one electrode ring 12 is provided on the electrode ring loading section. When welding the electrode substrate 11 and the electrode ring 12, the section of the electrode substrate 11 close to the distal end is partially provided in the positioning groove 202, the section close to the proximal end partially passes through the through hole 112 and extends along the accommodating cavity 301, and the proximal end of the electrode substrate 11 extends out from the through hole 302, so that the electrode substrate 11 can be regularly arranged to avoid unnecessary damage to the proximal end section.

[0061] Although the utility model is disclosed as above, it is not limited thereto. Those skilled in the art may make various modifications and variations to the utility model without departing from the spirit and scope of the utility model. Thus, if these modifications and variations of the utility model fall within the scope of the claims of the utility model and their equivalents, the utility model is also intended to include these modifications and variations.

Claims

1. A welding tool, characterized in that: It includes a motion mechanism and a positioning unit; wherein, The motion mechanism comprises a motion platform, the motion platform comprises a first surface, and the motion platform can move in a direction perpendicular to the first surface; The positioning portion includes a first positioning plate; the first positioning plate is arranged on the first surface and includes a second surface, and the second surface is arranged at an angle to the first surface; a positioning groove and an indicator mark are provided on the second surface, the positioning groove includes a positioning segment, and the indicator mark is arranged corresponding to the positioning segment.

2. The welding tool according to claim 1, characterized in that: An extension direction of the positioning segment is perpendicular to an intersection line of a plane where the second surface is located and a plane where the first surface is located.

3. The welding tool according to claim 1, characterized in that: The acute angle between the first surface and the second surface is 30° to 60°; and / or, The first positioning plate is detachably disposed on the first surface.

4. The welding tool according to claim 1, characterized in that: The positioning portion further includes a second positioning plate, and the second positioning plate is used to cover at least a portion of the positioning groove in an area other than the positioning section.

5. The welding tool according to claim 4, characterized in that: The second positioning plate includes a third surface, the third surface is used to be arranged toward the second surface, and a buffer layer is disposed on the third surface.

6. The welding tool according to claim 4, characterized in that: One of the second surface and the second positioning plate is provided with a plurality of connection holes, and the other is provided with a plurality of connection columns, and each of the connection columns is used to be pluggably arranged in the corresponding connection hole.

7. The welding tool according to claim 6, characterized in that: At least part of the connecting posts are interference fit with the corresponding connecting holes.

8. The welding tool according to claim 1, characterized in that: The motion platform further includes a fourth surface, which is arranged opposite to the first surface; the motion platform is also provided with a through hole extending from the fourth surface to the first surface, and the through hole is connected to the positioning groove; The welding tool also includes a storage portion, which is connected to the fourth surface, and the storage portion and the fourth surface enclose a accommodating cavity, and the accommodating cavity is connected to the via hole; a through hole connected to the accommodating cavity is formed on the storage portion, and the through hole is located on the side of the via hole away from the first surface.

9. The welding tool according to claim 1, characterized in that: The indicating mark is an indicating groove perpendicular to the positioning groove.

10. The welding tool according to claim 1, characterized in that: The motion platform also includes a fourth surface, which is arranged opposite to the first surface; the motion mechanism also includes a base, a motion bracket and a driving unit; one end of the motion bracket is connected to the fourth surface, and the other end is connected to the base; the driving unit is arranged on the motion bracket and is used to drive the motion bracket to move, so as to drive the motion platform to move.

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