Pumping source sintering jig

Abstract

The application discloses a pump source sintering jig and relates to the technical field of pump source chip positioning. The pump source sintering jig comprises a pump source base and a positioning jig. The pump source base is provided with a mounting groove. The bottom of the mounting groove is provided with a plurality of chip mounting positions. The positioning jig is arranged in the mounting groove and covers the bottom of the mounting groove. The positioning jig is provided with a plurality of positioning grooves penetrating in the up-down direction. The plurality of positioning grooves are arranged in correspondence with the plurality of chip mounting positions. At least two positioning columns are arranged on the positioning jig. The edges of the upper ends of the positioning columns are chamfered. The positioning columns are used to establish a rectangular coordinate system. Each mounting groove is provided with a corresponding coordinate in the rectangular coordinate system. The position of each mounting groove can be determined by recognizing the positioning columns, so that the technical problem of difficult recognition caused by the blurred edges of the mounting grooves of the positioning jig is avoided.

Description

Technical Field

[0001] This invention relates to the field of pump source mounting groove positioning and identification technology, and in particular to a pump source sintering fixture. Background Technology

[0002] The pump source is the core component of a laser. In actual production, the laser chip and the solder pad need to be accurately bonded to the pump source base and sintered in a vacuum sintering machine to ultimately connect the laser chip and the pump source base. Before bonding the chip and solder pad, a vacuum sintering fixture needs to be placed on the pump source base to prevent the chip and solder pad from shifting during vacuum sintering, which would reduce product yield. After long-term use, the vacuum sintering fixture can develop severe discoloration and scratches in the bonding area between the chip and solder pad. Severe discoloration and scratches can lead to failure of visual imaging positioning, rendering traditional visual imaging contour positioning methods unsuitable in such cases. Summary of the Invention

[0003] The main objective of this invention is to propose a pump source sintering fixture, which aims to solve the technical problem that the positioning groove of the existing pump source sintering fixture becomes blurred and cannot be positioned after long-term use.

[0004] To achieve the above objectives, the present invention provides a pump source sintering fixture, comprising:

[0005] A pump source base, wherein the pump source base is provided with a mounting groove, and the bottom of the mounting groove is provided with multiple chip bonding positions; and,

[0006] A positioning fixture is disposed in the mounting groove and covers the bottom of the mounting groove. The positioning fixture has multiple positioning grooves that extend through the vertical direction, and the multiple positioning grooves are corresponding to multiple chip bonding positions.

[0007] The positioning fixture is provided with at least two positioning posts, and the upper edges of the two positioning posts are chamfered.

[0008] Optionally, the upper surface of the positioning fixture is provided with two positioning holes, and two positioning posts are provided. The lower ends of the two positioning posts are provided with pins so that the two positioning posts are respectively inserted into the two positioning holes.

[0009] Optionally, the upper surface of the positioning fixture is provided with a plurality of coding holes, and the pump source sintering fixture further includes a plurality of coding pins;

[0010] Different numbers of the coding pins can be selected and inserted into multiple coding holes in different arrangements to form various visual recognition codes.

[0011] Optionally, the upper surface of the pump source base is provided with a plurality of first mounting holes, and the positioning fixture is provided with a plurality of second mounting holes corresponding to the plurality of first mounting holes;

[0012] The pump source sintering fixture also includes a plurality of mounting pins, which are respectively provided with a plurality of second mounting holes to be inserted into a plurality of first mounting holes.

[0013] This invention also proposes a method for bonding and positioning a pump source chip, comprising the following steps:

[0014] Obtain the coding information to determine the model of the pump source sintering fixture;

[0015] Obtain the position information of the coordinate reference set on the pump source sintering fixture, and establish the current rectangular coordinate system based on the position information of the coordinate reference;

[0016] The preset mapping relationship is queried according to the current rectangular coordinate system to obtain the position information of each chip bonding position on the pump source sintering fixture. The preset mapping relationship is the correspondence between the model of the pump source sintering fixture and the position information of each chip bonding position on the pump source sintering fixture.

[0017] Optionally, the pump source sintering fixture is provided with multiple coding holes, and the pump source sintering fixture also includes multiple coding pins. Different numbers of the coding pins are selected and inserted into the multiple coding holes in different arrangements to form a variety of visual recognition codes.

[0018] The step of obtaining the encoding information to determine the model of the pump source sintering fixture includes:

[0019] Obtain the number of the coding pins and the position information of each coding pin within the plurality of coding holes;

[0020] The visual recognition code is obtained based on the position information of each of the coded pins in the plurality of coded holes;

[0021] The model of the pump source sintering fixture is determined by querying a preset coding relationship based on the visual recognition code, wherein the preset coding relationship is the correspondence between the visual recognition code and the model of the pump source sintering fixture.

[0022] Optionally, a plurality of the coded aperture arrays are arranged, and the visual recognition code includes a binary sequence;

[0023] The step of obtaining the visual recognition code based on the position information of each of the coded pins in the plurality of coded holes includes:

[0024] Acquire image information of multiple coded holes;

[0025] Based on the image information of multiple coded holes, the values ​​of each digit of the binary sequence are determined to form a visual recognition code.

[0026] Optionally, the step of determining the values ​​of each digit of the binary sequence based on the image information of the plurality of coded holes includes:

[0027] When there is no coding pin corresponding to the coding hole, the value of the number of bits in the binary sequence corresponding to the coding hole is determined to be 0;

[0028] When the corresponding encoding hole has the encoding pin, the value of the number of bits in the binary sequence corresponding to the encoding hole is determined to be 1.

[0029] Optionally, the pump source sintering fixture is provided with two positioning posts;

[0030] The step of obtaining the position information of the coordinate reference and establishing the current rectangular coordinate system based on the position information of the coordinate reference includes:

[0031] Obtain the first contour image information of the two positioning posts to obtain two first annular patterns;

[0032] A horizontal coordinate system is established by connecting the centers of the two first annular shapes, and a vertical coordinate system is established by passing through one of the two centers and perpendicular to the horizontal coordinate system, thus forming the current rectangular coordinate system.

[0033] Optionally, each chip bonding position on the pump source sintering fixture is provided with a positioning groove, and the pump source sintering fixture is provided with two positioning posts;

[0034] Before the step of querying a preset mapping relationship based on the current Cartesian coordinate system to obtain the position information of each chip bonding position on the pump source sintering fixture, the following is also included:

[0035] Obtain the second contour image information of the two positioning posts to obtain two second annular patterns;

[0036] A horizontal coordinate system is established by connecting the centers of the two second annular shapes, and a vertical coordinate system is established by passing through one of the two centers and perpendicular to the horizontal coordinate system.

[0037] After setting multiple recognition points on the contour boundary of the positioning groove, image information of each recognition point is acquired;

[0038] Each of the identified points is fitted according to a preset rule to form a polygonal outline;

[0039] A preset mapping relationship is established by matching the coordinate position information of the polygonal contour in the associated rectangular coordinate system with the model of the pump source sintering fixture.

[0040] In this invention, the pump source sintering fixture includes a pump source base and a positioning fixture. The pump source base has a mounting groove, and the bottom of the mounting groove has multiple chip bonding positions. The positioning fixture is disposed within the mounting groove and covers the bottom of the mounting groove. The positioning fixture has multiple positioning grooves that extend vertically, and these multiple positioning grooves correspond to the multiple chip bonding positions. The positioning fixture has at least two positioning posts, and the upper edges of the two positioning posts are chamfered. By setting the positioning fixture and opening multiple positioning grooves corresponding to the multiple chip bonding positions on the positioning fixture, the chips are positioned within the corresponding positioning grooves during mounting. Therefore, the boundaries of the positioning grooves need to be identified during mounting. In this invention, two positioning posts are set on the positioning fixture, with their upper edges chamfered to facilitate the visual recognition device's identification of their outlines. By identifying the positions of the two positioning posts, a Cartesian coordinate system is established based on them. The positions of a plurality of preset positioning slots are then obtained using this Cartesian coordinate system as a reference. Compared to traditional methods of directly photographing and identifying the outlines of positioning slots, which often become blurred and unrecognizable due to long-term use, this invention pre-enters the positions of the corresponding positioning slots into the system. The visual recognition device then only identifies the positioning posts, resulting in fast, clear, and accurate identification. Attached Figure Description

[0041] To more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on the structures shown in these drawings without creative effort.

[0042] Figure 1 This is a schematic diagram of the structure of an embodiment of the pump source sintering fixture provided by the present invention;

[0043] Figure 2 for Figure 1 A three-dimensional structural diagram of the sintering fixture with a pump source from another perspective;

[0044] Figure 3 for Figure 1 A schematic diagram of the positioning column and a schematic diagram of the shooting direction;

[0045] Figure 4 for Figure 3 A schematic diagram of the photographic results of the positioning column;

[0046] Figure 5 for Figure 1 A schematic diagram of a rectangular coordinate system established using two positioning pins;

[0047] Figure 6 for Figure 1 A schematic diagram showing the positions of multiple identification points on the contour boundary of the positioning groove;

[0048] Figure 7 for Figure 6 A schematic diagram of a polygonal contour fitted by multiple recognition points;

[0049] Figure 8 This is a flowchart illustrating a method for bonding and positioning a pump source chip proposed in this invention.

[0050] Explanation of icon numbers:

[0051]

[0052] The realization of the objective, functional features and advantages of the present invention will be further explained in conjunction with the embodiments and with reference to the accompanying drawings. Detailed Implementation

[0053] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the scope of protection of the present invention.

[0054] It should be noted that if the embodiments of the present invention involve directional indicators (such as up, down, left, right, front, back, etc.), the directional indicators are only used to explain the relative positional relationship and movement of the components in a certain specific posture (as shown in the figure). If the specific posture changes, the directional indicators will also change accordingly.

[0055] Furthermore, if the embodiments of this invention involve descriptions such as "first" or "second," these descriptions are for descriptive purposes only and should not be construed as indicating or implying their relative importance or implicitly specifying the number of technical features indicated. Therefore, a feature defined with "first" or "second" may explicitly or implicitly include at least one of those features. Additionally, the meaning of "and / or" throughout the text includes three parallel solutions; for example, "A and / or B" includes solution A, solution B, or a solution where both A and B are satisfied simultaneously. Furthermore, the technical solutions of the various embodiments can be combined with each other, but this must be based on the ability of those skilled in the art to implement them. When the combination of technical solutions is contradictory or impossible to implement, it should be considered that such a combination of technical solutions does not exist and is not within the scope of protection claimed by this invention.

[0056] The pump source is the core component of a laser. In actual production, the laser chip and the solder pad need to be accurately bonded to the pump source base and sintered in a vacuum sintering machine to ultimately connect the laser chip and the pump source base. Before bonding the chip and solder pad, a vacuum sintering fixture needs to be placed on the pump source base to prevent the chip and solder pad from shifting during vacuum sintering, which would reduce product yield. After long-term use, the vacuum sintering fixture can develop severe discoloration and scratches in the bonding area between the chip and solder pad. Severe discoloration and scratches can lead to failure of visual imaging positioning, rendering traditional visual imaging contour positioning methods unsuitable in such cases.

[0057] In view of this, the present invention improves the design of the pump source sintering fixture, aiming to solve the technical problem that the positioning groove of the existing pump source sintering fixture becomes blurred and cannot be positioned after long-term use.

[0058] Please see Figure 1 and 2This invention proposes an embodiment of a pump source sintering fixture. In this embodiment, the pump source sintering fixture includes a pump source base 1 and a positioning fixture 2. The pump source base 1 has a mounting groove, and the bottom of the mounting groove has multiple chip bonding positions. The positioning fixture 2 is disposed in the mounting groove and covers the bottom of the mounting groove. The positioning fixture 2 has multiple positioning grooves 21 that extend vertically, and the multiple positioning grooves 21 are corresponding to the multiple chip bonding positions. The positioning fixture 2 has at least two positioning posts 3, and the upper edges of the two positioning posts 3 are chamfered. By setting the positioning fixture 2 and opening multiple positioning grooves 21 corresponding to the multiple chip bonding positions on the positioning fixture 2, the chips are positioned within the corresponding positioning grooves 21 during mounting. Therefore, the boundaries of the positioning grooves 21 need to be identified during mounting. In this invention, two positioning posts 3 are set on the positioning fixture 2, with their upper edges chamfered to facilitate the visual recognition device in identifying their outlines. By identifying the positions of the two positioning posts 3, a Cartesian coordinate system is established using them as a reference. The positions of multiple preset positioning slots 21 are then obtained based on this Cartesian coordinate system. Compared to the traditional method of directly photographing and recognizing the outlines of the positioning slots 21, which often becomes blurred and unrecognizable after long-term use, this invention pre-enters the positions of the corresponding positioning slots 21 into the system. The visual recognition device then only identifies the positioning posts 3, resulting in fast, clear, and accurate recognition.

[0059] Please see Figure 3-5 When taking photos using a visual recognition device, a flash is typically used. The light reflects off the object's surface and back to the device for identification. The upper surface of the positioning post 3 is smooth, while its upper edge is chamfered. During photography, the light reflected from the upper surface of the positioning post 3 is received by the visual recognition device, while the upper edge reflects the light outwards, creating a dark, ring-shaped outline that facilitates recognition by the device.

[0060] In this embodiment, the bottom of the mounting groove is generally arranged in an inclined stepped shape, and multiple chip bonding positions are correspondingly arranged on each stepped protrusion. When the visual recognition device recognizes the positioning fixture 2, in order to ensure visual accuracy and mounting convenience, it is necessary to ensure that the upper surface of the positioning fixture 2 is perpendicular to the shooting angle of the visual recognition device. Therefore, the lower surface of the positioning fixture 2 is arranged in a stepped shape corresponding to the bottom of the mounting groove.

[0061] It should be further explained that the outline of the positioning groove 21 is set according to the shape of the chip. The specific shape is not limited here. In this embodiment, the chip is rectangular and the positioning groove 21 is rectangular.

[0062] In a specific embodiment of the present invention, two positioning posts 3 are provided, and two positioning holes are provided on the upper surface of the positioning fixture 2. Pins are provided at the lower ends of the two positioning posts 3, so that the two positioning posts 3 are respectively inserted into the two positioning holes. Each pin is interference-fitted with the corresponding positioning hole to fix the two positioning posts 3 in the two positioning holes. The positioning posts 3 are detachable to prevent wear and deformation from prolonged use, which could affect image recognition. Replacement is simple; just pull out the corresponding positioning post 3 and replace it with a new one. Replacement is simple, low-cost, and durable.

[0063] The shape of the two positioning posts 3 is not limited in this invention; they can be square, rhomboid, or circular. In this embodiment, both positioning posts 3 are circular, which facilitates production and simplifies identification. After the visual recognition device takes a picture, it obtains two annular shapes. Positioning is achieved by identifying the centers of the two annular shapes. A Y-axis is established, passing through the origin and perpendicular to the X-axis, with the line connecting the two centers as the X-axis and one of the centers as the origin, to form a rectangular coordinate system.

[0064] Understandably, the choice of the origin, the positive direction of the X-axis, and the positive direction of the Y-axis can be selected, and the Cartesian coordinate system can be pre-set in the system to ensure that the same Cartesian coordinate system is established after each photo recognition.

[0065] In the technical solution of this invention, the pump source generally has multiple models, and the corresponding pump source sintering fixture has multiple models. The positioning fixture 2 also has multiple models. The positions of the multiple positioning slots 21 and the positions of the positioning posts 3 are different for different models of the positioning fixture 2. Therefore, before identifying the positioning posts 3 and performing chip mounting, it is necessary to identify the model of the pump source sintering fixture. However, when the pump source sintering fixture is sintered in a vacuum sintering furnace, not only will the positioning slots 21 become blurred due to long-term use, but traditional code recognition or QR code recognition will also deform or melt due to high temperature, resulting in the inability to recognize after a few uses, which is costly and affects production efficiency.

[0066] In one embodiment of the present invention, the upper surface of the positioning fixture 2 is provided with a plurality of coding holes 22, and the pump source sintering fixture further includes a plurality of coding pins 4; wherein, different numbers of the coding pins 4 can be selected and inserted into the plurality of coding holes 22 in different arrangements to form a variety of visual recognition codes. The plurality of coding holes 22 are arranged in an array along the horizontal and vertical directions on the upper surface of the positioning fixture 2, and the upper edges of the plurality of coding pins 4 are beveled. When identifying the model of the positioning fixture 2, the array area of ​​the plurality of coding holes 22 is photographed, and the presence or absence of the coding pins 4 in each coding hole 22 is determined by identifying the coding pins 4 to obtain different graphic coding information; or, the visual recognition device can be preset so that the output signal is 1 when the coding pin 4 is identified in the corresponding coding hole 22, and the output model is 0 when the coding pin 4 is not identified in the corresponding coding hole 22, to obtain different binary number sequence coding information. Different graphic coding information or different binary number sequences correspond to different models of the positioning fixture 2.

[0067] It is understood that each of the coded pins 4 is interference-fitted with its corresponding coded hole 22 to securely install the coded pin 4 in the corresponding coded hole 22. The number of coded holes 22 is not limited here; the maximum number of coded pins 4 corresponds to the number of coded holes 22. Different numbers of coded pins 4 can be arranged in multiple coded holes 22 to form various visual recognition codes. In this invention, the number of coded holes 22 is at least two. To accommodate more types of positioning fixtures 2, in this embodiment, the number of coded holes 22 is nine, arranged in a nine-square grid. If more types of positioning fixtures 2 need to be accommodated, more coded holes 22 can be provided, all of which should be within the protection scope of this invention.

[0068] Each of the coding pins 4 is detachable to prevent wear and deformation of the coding pins 4 after long-term use, which would affect photo recognition. Replacement is simple; just pull out the corresponding coding pin 4 and replace it with a new coding pin 4. Replacement is simple, low-cost, and durable.

[0069] In this embodiment of the invention, the upper surface of the pump source base 1 is provided with a plurality of first mounting holes, and the positioning fixture 2 is provided with a plurality of second mounting holes corresponding to the plurality of first mounting holes; the pump source sintering fixture also includes a plurality of mounting pins 5, which pass through the plurality of second mounting holes to be inserted into the plurality of first mounting holes. The positioning fixtures 2 are fixedly mounted on the pump source base 1 by the mounting pins 5. To ensure the stability of the installation, each mounting pin 5 is interference-fitted with the corresponding first mounting hole and the corresponding second mounting hole. It should be noted that the number of mounting pins 5 is not limited here. In this embodiment, there are at least two mounting pins 5 to ensure that the positioning fixture 2 can be accurately positioned and its installation strength is guaranteed.

[0070] In addition, please see Figure 8 The present invention also proposes a method for bonding and positioning a pump source chip. In an embodiment of the present invention, the method for bonding and positioning the pump source chip includes the following steps:

[0071] Step S20: Obtain coding information to determine the model of the pump source sintering fixture;

[0072] Step S40: Obtain the position information of the coordinate reference set on the pump source sintering fixture, and establish the current rectangular coordinate system with the position information of the coordinate reference;

[0073] Step S60: Query the preset mapping relationship according to the current rectangular coordinate system to obtain the position information of each chip bonding position on the pump source sintering fixture, wherein the preset mapping relationship is the correspondence between the model of the pump source sintering fixture and the position information of each chip bonding position on the pump source sintering fixture.

[0074] In the invention, the pump source sintering fixture has multiple models, with different positioning slots 21 and coordinate reference positions for different models. First, a visual recognition device is used to capture images to obtain the coding information on the pump source sintering fixture, thus determining the model. Then, images are taken to obtain the coordinate reference position information on the pump source sintering fixture currently to be mounted, and a current Cartesian coordinate system is established based on this coordinate reference position information. A preset mapping relationship is then queried based on this current Cartesian coordinate system. Specifically, this preset mapping relationship corresponds to the model of the pump source sintering fixture and the position information of each chip bonding position on the pump source sintering fixture, thereby obtaining the position information of each chip bonding position on the pump source sintering fixture. By setting coordinate references and the preset mapping relationship, compared with the existing technology which does not require identifying each chip bonding position individually and has low identification efficiency, the technical solution of the present invention only needs to identify the model and the corresponding coordinate reference to obtain the position information of each chip bonding position. It also avoids the technical problem that the chip bonding positions may become blurred due to long-term use of the pump source sintering fixture, which may lead to the inability to identify them.

[0075] In one embodiment of the present invention, the pump source sintering fixture is provided with a plurality of coding holes 22, and the pump source sintering fixture also includes a plurality of coding pins 4. Different numbers of the coding pins 4 are selected and inserted into the plurality of coding holes 22 in different arrangements to form a variety of visual recognition codes.

[0076] Step S20, obtaining coding information to determine the model of the pump source sintering fixture, includes:

[0077] Step S21: Obtain the number of the coding pins 4 and the position information of each coding pin 4 within the plurality of coding holes 22;

[0078] Step S22: Obtain the visual recognition code based on the position information of each of the coding pins 4 in the plurality of coding holes 22;

[0079] Step S23: Query the preset coding relationship according to the visual recognition code to determine the model of the pump source sintering fixture, wherein the preset coding relationship is the correspondence between the visual recognition code and the model of the pump source sintering fixture.

[0080] In the technical solution of the present invention, when the pump source sintering fixture is sintered in a vacuum sintering furnace, not only will the positioning groove 21 become blurred due to long-term use, but traditional coding or QR code recognition will also be deformed or melted due to high temperature, resulting in the inability to recognize after a few uses, which is costly and affects production efficiency.

[0081] In this embodiment, the upper surface of the positioning fixture 2 is provided with multiple coding holes 22, and the pump source sintering fixture also includes multiple coding pins 4. Different numbers of coding pins 4 can be selected and inserted into the multiple coding holes 22 in different arrangements to form various visual recognition codes. The multiple coding holes 22 are arranged in an array on the upper surface of the positioning fixture 2, and the upper edges of the multiple coding pins 4 are chamfered. When identifying the model of the positioning fixture 2, the array area of ​​the multiple coding holes 22 is photographed, and the presence or absence of a coding pin 4 in each coding hole 22 is determined by identifying the coding pins 4, thereby obtaining different graphic coding information.

[0082] Furthermore, the plurality of the encoding holes 22 are arranged in an array, and the visual recognition encoding includes a binary sequence;

[0083] Step S22, the step of obtaining the visual recognition code based on the position information of each of the coding pins 4 in the plurality of coding holes 22, includes:

[0084] Step S221: Obtain image information of the multiple encoding holes 22;

[0085] Step S222: Determine the values ​​of each digit of the binary sequence based on the image information of the multiple encoding holes 22 to form a visual recognition code.

[0086] Multiple coding holes 22 are arranged in a horizontal and vertical array on the upper surface of the positioning fixture 2, and the upper edges of multiple coding pins 4 are beveled. When identifying the model of the positioning fixture 2, the array area of ​​multiple coding holes 22 is photographed. By identifying multiple coding holes 22 in a fixed order, it is determined whether each coding hole 22 has a coding pin 4 inserted in it, so as to obtain different binary coding sequences.

[0087] Furthermore, step S222, the step of determining the value of each digit of the binary sequence based on the image information of the plurality of encoding holes 22, includes:

[0088] Step S2221: When there is no coding pin 4 corresponding to the coding hole 22, determine that the value of the number of bits in the binary sequence corresponding to the coding hole 22 is 0;

[0089] Step S2222: When the encoding pin 4 is present in the corresponding encoding hole 22, determine that the value of the number of bits in the binary sequence corresponding to the encoding hole 22 is 1.

[0090] In this embodiment, a visual recognition device can be pre-set to output a signal of 1 when the coded pin 4 is recognized in the corresponding coded hole 22, and output a signal of 0 when the coded pin 4 is not recognized in the corresponding coded hole 22. The recognition results of multiple coded holes 22 are sequentially combined to obtain different binary number sequence encoding information.

[0091] In one embodiment of the present invention, the pump source sintering fixture is provided with two positioning posts 3;

[0092] Step S40, obtaining the position information of the coordinate reference and establishing the current rectangular coordinate system based on the position information of the coordinate reference, includes:

[0093] Step S41: Obtain the first contour image information of the two positioning posts 3 to obtain two first annular patterns;

[0094] Step S42: Establish a horizontal coordinate system by connecting the centers of the two first annular shapes, and establish a vertical coordinate system by passing through one of the two centers and perpendicular to the horizontal coordinate system, so as to form the current rectangular coordinate system.

[0095] In this embodiment, two positioning posts 3 are set on the pump source sintering fixture, and the upper edges of the two positioning posts 3 are chamfered to facilitate the visual recognition device to identify the outline of the two positioning posts 3. The position of the two positioning posts 3 is identified, and a current rectangular coordinate system is established with the two positioning posts 3 as the reference.

[0096] Please see Figure 3-5 When taking photos using a visual recognition device, a flash is typically used. The light reflects off the object's surface and back to the device for identification. By making the upper surface of the positioning post 3 smooth and its upper edge chamfered, the upper surface of the positioning post 3 reflects light during photography, which is received by the visual recognition device. Meanwhile, the upper edge of the positioning post 3 reflects light outwards, preventing it from being received by the device, thus forming a dark, ring-shaped outline to facilitate recognition by the visual recognition device.

[0097] In a specific embodiment of the present invention, the upper surface of the pump source sintering fixture is provided with two positioning holes, and the lower ends of the two positioning posts 3 are provided with pins, so that the two positioning posts 3 are respectively inserted into the two positioning holes. Each pin is interference-fitted with the corresponding positioning hole, so that the two positioning posts 3 are fixedly installed in the two positioning holes. The positioning posts 3 are detachable to prevent wear and deformation of the positioning posts 3 after long-term use, which would affect image recognition. Replacement is simple; just pull out the corresponding positioning post 3 and replace it with a new one. Replacement is simple, low-cost, and durable.

[0098] The shape of the two positioning posts 3 is not limited in this invention; they can be square, rhomboid, or circular. In this embodiment, both positioning posts 3 are circular, which facilitates production and simplifies identification. After the visual recognition device takes a picture, it obtains two annular shapes. Positioning is achieved by identifying the centers of the two annular shapes. A Y-axis is established, passing through the origin and perpendicular to the X-axis, with the line connecting the two centers as the X-axis and one of the centers as the origin, to form a rectangular coordinate system.

[0099] Understandably, the choice of the origin, the positive direction of the X-axis, and the positive direction of the Y-axis can be selected, and the Cartesian coordinate system can be pre-set in the system to ensure that the same Cartesian coordinate system is established after each photo recognition.

[0100] In one embodiment of the present invention, each chip bonding position on the pump source sintering fixture is provided with a positioning groove 21, and the pump source sintering fixture is provided with two positioning posts 3.

[0101] Before step S60, which involves querying a preset mapping relationship based on the current Cartesian coordinate system to obtain the position information of each chip bonding position on the pump source sintering fixture, the following steps are also included:

[0102] Step S11: Obtain the second contour image information of the two positioning posts 3 to obtain two second annular patterns;

[0103] Step S12: Establish a horizontal coordinate system by connecting the centers of the two second annular shapes, and establish a vertical coordinate system by passing through one of the two centers and perpendicular to the horizontal coordinate system to form an associated rectangular coordinate system.

[0104] Step S13: After setting multiple recognition points 211 on the contour boundary of the positioning groove 21, obtain image information of each recognition point 211;

[0105] Step S14: Fit each of the identification points 211 according to a preset rule to form a polygonal outline;

[0106] Step S15: Establish a preset mapping relationship by matching the coordinate position information of the polygonal contour in the associated rectangular coordinate system with the model of the pump source sintering fixture.

[0107] Please see Figure 6 and 7In this invention, the pump source sintering fixture is provided with multiple positioning grooves 21 corresponding to the bonding positions of each chip to position the chip and prevent chip displacement during transportation. Before the pump source sintering fixture is put into use, the positions of the positioning grooves 21 of each model of the pump source need to be entered into the system for easy data retrieval later. When entering the data into the system, the associated rectangular coordinate system of the current pump source sintering fixture is first established by taking pictures and recognizing the two positioning posts 3. Then, multiple recognition points 211 are set on the contour boundary of the positioning groove 21 by a visual recognition device to obtain the contour boundary information of the positioning groove 21 at each recognition point 211. The visual recognition device can fit the contour boundary information of the positioning groove 21 at each recognition point 211 according to preset rules and connect them to form the polygonal contour. The coordinate position information of each polygonal contour in the associated rectangular coordinate system is matched with the model of the pump source sintering fixture to establish a preset mapping relationship. When put into production, the coordinates of the polygonal outline of each positioning slot 21 of the corresponding model in the corresponding rectangular coordinate system can be called according to the preset mapping relationship, which has high accuracy and high recognition efficiency.

[0108] It should be noted that the outline of the positioning groove 21 is set according to the shape of the chip, and the specific shape is not limited here. In this embodiment, the positioning groove 21 is set as a rectangle.

[0109] The above description is merely a preferred embodiment of the present invention and does not limit the patent scope of the present invention. Any equivalent structural transformations made using the contents of the present invention's specification and drawings under the inventive concept of the present invention, or direct / indirect applications in other related technical fields, are included within the patent protection scope of the present invention.

Claims

1. A pump source sintering fixture, characterized in that, include: A pump source base, wherein the pump source base is provided with a mounting groove, and the bottom of the mounting groove is provided with multiple chip bonding positions; and, A positioning fixture is disposed in the mounting groove and covers the bottom of the mounting groove. The positioning fixture has multiple positioning grooves that extend through the vertical direction, and the multiple positioning grooves are corresponding to multiple chip bonding positions. The positioning fixture is provided with at least two positioning posts, and the upper edges of the two positioning posts are chamfered.

2. The pump source sintering fixture as described in claim 1, characterized in that, The positioning post is provided in two parts, and the upper surface of the positioning fixture is provided with two positioning holes. The lower ends of the two positioning posts are provided with pins so that the two positioning posts are respectively inserted into the two positioning holes.

3. The pump source sintering fixture as described in claim 1, characterized in that, The upper surface of the positioning fixture is provided with multiple coding holes, and the pump source sintering fixture also includes multiple coding pins; Different numbers of the coding pins are selected and inserted into multiple coding holes in different arrangements to form various visual recognition codes.

4. The pump source sintering fixture as described in claim 1, characterized in that, The upper surface of the pump source base is provided with a plurality of first mounting holes, and the positioning fixture is provided with a plurality of second mounting holes corresponding to the plurality of first mounting holes; The pump source sintering fixture also includes a plurality of mounting pins, which are respectively provided with a plurality of second mounting holes to be inserted into a plurality of first mounting holes.

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