A substrate bonding tool and bonding method for a circulator and an isolator

Abstract

The present invention discloses a substrate bonding tool and bonding method for a circulator and an isolator, which are used to assemble a substrate and a center conductor. The substrate bonding tool for the circulator and the isolator includes a tightening mechanism, a positioning mechanism, a frame mechanism and a whole row block. The present invention uses a substrate, a center conductor and a substrate as a group of components, and multiple groups of components are sequentially loaded into the positioning mechanism, and combined with the bonding method of the present invention, multiple pairs of components are positioned and bonded at one time. The present invention can overcome the technical defects in the prior art that the positioning reference of the substrate and the center conductor is not the same component, which leads to cumulative errors and poor coaxiality between the substrate and the center conductor. It has the advantages of simple structure, low cost, fast processing speed, and one operation can meet the needs of multiple circulators and isolators. The present invention can avoid damage to the substrate caused by the relative rotation of the substrate and the center conductor, and the manufactured components are symmetrically and evenly stressed, which will not affect the overall performance of the product after assembly.

Description

Technical Field

[0001] The invention relates to a bonding tool and a bonding method, and in particular to a substrate bonding tool and a bonding method for a circulator and an isolator. Background Art

[0002] With the large-scale construction of 5G in 2020, the number of base stations has increased significantly, and the demand for circulators / isolators has increased significantly. The circulators / isolators require that the substrate and the center conductor have high coaxiality during assembly. However, if the substrate is installed first, then the center conductor, and then the substrate, this separate assembly method is used. The two substrates are positioned using the inner holes of the cavity, and the center conductor is positioned using the inner conductor. Since the positioning references used for the substrate and the center conductor are not the same component, cumulative errors are bound to occur. The final result is that the coaxiality between the substrate and the center conductor is poor.

[0003] Moreover, each circulator / isolator product needs to be installed with the substrate first, then the center conductor, and then the substrate again, which is very time-consuming. In addition, the coaxiality of the substrate and the center conductor of each product is different and cannot be unified, so large-scale mass production is not possible. In addition, the substrate and the center conductor should not rotate relative to each other during bonding, otherwise the substrate will be damaged. At the same time, the substrate and the center conductor should not lift each other due to relative rotation to improve positioning accuracy. In the prior art, the occurrence of "relative rotation" cannot be effectively controlled during the installation and operation process, and product quality cannot be guaranteed. Summary of the invention

[0004] The purpose of the present invention is to provide a solution to the above-mentioned problem, which can complete the bonding of multiple groups of substrates, center conductors, and substrates at one time, with high speed, high efficiency, high coaxiality, good product quality, and high performance, a substrate bonding tool and bonding method for circulators and isolators.

[0005] In order to achieve the above-mentioned object, the technical solution adopted by the present invention is as follows: a substrate bonding tool for a circulator and an isolator, used for assembling a substrate and a center conductor, wherein the center conductor includes three legs evenly distributed along its radial direction, including a tightening mechanism, a positioning mechanism, a rack mechanism and a whole row block;

[0006] The tightening mechanism includes a sliding assembly, which includes a slide rail and a slide table that can slide along the length direction of the slide rail, a fixed block is fixedly connected to the slide table, one end of the fixed block is horizontally fixedly connected to a push rod, and the other end is threadedly connected to a screw rod, the push rod and the screw rod are both arranged along the length direction of the slide rail, an annular groove is provided near the end of the screw rod away from the fixed block, and the screw rod is assembled on the frame mechanism through the annular groove;

[0007] The positioning mechanism is located at one end of the top bar away from the fixed block, and includes a horizontally arranged semi-cylinder, the semi-cylinder is fixed on the frame mechanism, and a positioning groove for positioning the substrate is provided on the upper surface, the positioning groove is arranged along the radial direction of the semi-cylinder, and its cross section matches the outer wall of the substrate, and the substrate can be placed and positioned along the cross-sectional direction thereof, and the bottom and both sides of the positioning groove are respectively provided with strip grooves corresponding to the three leg columns of the central conductor, and when the three leg columns are placed in the three strip grooves correspondingly, the center of the central conductor overlaps with the center of the substrate and the axis of the top bar;

[0008] When the screw is rotated, the fixed block can drive the top bar to move from one end of the semi-cylinder to the other end;

[0009] The entire row of blocks is in the shape of a long strip, located directly above the semi-cylinder, and is used to press down the installed substrate and the central conductor.

[0010] Preferably, one end of the screw rod away from the fixing block is provided with a square groove for matching a torque wrench.

[0011] Preferably, the annular groove is connected to the frame mechanism in such a manner that a mounting portion for mounting the annular groove is provided on the frame mechanism, a mounting hole is provided on the mounting portion, the mounting hole and the annular groove have a clearance fit and do not affect the rotation of the screw, and the mounting portion is composed of two parts detachably connected through the mounting hole.

[0012] A method for bonding substrate bonding tooling of a circulator and an isolator comprises the following steps:

[0013] (1) Prepare a substrate bonding tool for the circulator and the isolator so that the top bar is located outside the semi-cylinder;

[0014] (2) A substrate, a center conductor, and a substrate are a group of components, and multiple groups of components are sequentially loaded into the positioning mechanism;

[0015] (3) Use the entire row of blocks to lightly press the substrate and the center conductor, rotate the screw, and move the push rod toward the positioning mechanism so that all substrates and the center conductor are in contact with each other and no longer move;

[0016] (4) Remove the entire row of blocks and use glue to bond the center conductor in each group of components to the two substrates.

[0017] In the present invention, the purpose of the tightening mechanism is to rotate the screw rod to displace the push rod, thereby tightening the substrate and the center conductor. Its working principle is as follows: the annular groove of the screw rod is installed in the frame mechanism, and it cannot move in its axial direction, but can only rotate 360° along its axial direction. Since the screw rod is threadedly connected to the fixed block, when the screw rod cannot move, the fixed block moves. Since the bottom of the fixed block is installed on the sliding assembly, it moves along the guide rail direction of the sliding assembly. The sliding assembly plays a role of limiting and guiding. The fixed block is connected to the push rod, which can drive the push rod to move back and forth along the guide rail direction.

[0018] The positioning mechanism is mainly used to install multiple groups of substrates, center conductors, and substrates. For circulators and isolators, each circulator and isolator requires a component consisting of a center conductor and two substrates, and the substrates are located on the front and back sides of the center conductor. Therefore, we use the substrate, center conductor, and substrate as a group of components, and load multiple groups of components into the positioning mechanism in sequence, which can meet the needs of multiple circulators and isolators at one time. Positioning grooves and three strip grooves are set in the positioning mechanism. Among them, the positioning groove is used to position the substrate, and the strip groove is used to position the center conductor. When we put the center conductor and substrate into the positioning mechanism, the center conductor and substrate themselves can overlap in the center, thereby ensuring coaxiality without the need for re-debugging and testing. When multiple groups of components are loaded, the coaxiality of each group of components can also be guaranteed.

[0019] The entire row of blocks is used to hold down the installed substrate and center conductor to prevent the substrate and center conductor from moving when the push bar is pushed.

[0020] Compared with the prior art, the advantages of the present invention are:

[0021] (1) A new substrate bonding tool is provided, which overcomes the technical defect in the prior art that the positioning reference of the substrate and the center conductor is not the same component, resulting in cumulative errors and poor coaxiality between the substrate and the center conductor. The substrate and the center conductor are positioned by a positioning mechanism so that the inserted substrate and the center conductor are coaxial. In actual operation, the shaping block and the push rod are used in conjunction, so that the present invention has a simple structure, low cost, and fast processing speed. One operation can meet the needs of multiple circulators and isolators. From independent processing to batch processing.

[0022] (2) The shaping block can prevent the substrate and the center conductor from rotating relative to each other after they are placed in the positioning mechanism, thereby avoiding damage to the substrate and lifting each other due to rotation.

[0023] (3) In the present invention, the center of the central conductor overlaps with the center of the substrate and the axis of the push rod; therefore, when the push rod squeezes the central conductor and the substrate, the force applied is parallel to the axis and uniform, making the assembly of "substrate, central conductor, substrate" symmetrical and uniform, and will not affect the overall performance of the product after assembly. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] Figure 1 It is a schematic diagram of the structure of the present invention;

[0025] Figure 2 is a schematic diagram of the cross section of the positioning mechanism;

[0026] Figure 3 It is a schematic diagram of bonding the center conductor and the substrate;

[0027] Figure 4 It is a schematic diagram of the exploded structure of the tightening mechanism;

[0028] Figure 5 Schematic diagram of substrate, center conductor, substrate assembly and stacking.

[0029] In the figure: 1. tightening mechanism; 2. positioning mechanism; 3. frame mechanism; 4. whole row block; 5. center conductor; 6. substrate; 7. semi-cylinder; 8. positioning groove; 9. strip groove; 10. lifting bar; 11. slide; 12. guide rail; 13. fixing block; 14. screw; 15. annular groove; 16. square groove. DETAILED DESCRIPTION

[0030] The present invention will be further described below in conjunction with the accompanying drawings.

[0031] Example 1: See Figures 1 to 5 , a substrate 6 bonding tool for a circulator and an isolator, used for assembling a substrate 6 and a center conductor 5, wherein the center conductor 5 includes three legs evenly distributed along its radial direction, including a tightening mechanism 1, a positioning mechanism 2, a frame mechanism 3 and a whole row block 4;

[0032] The jacking mechanism 1 includes a sliding assembly, which includes a slide rail and a slide table 11 that can slide along the length direction of the slide rail. A fixed block 13 is fixedly connected to the slide table 11. One end of the fixed block 13 is horizontally fixedly connected to a push rod 10, and the other end is threadedly connected to a screw rod 14. The push rod and the screw rod 14 are both arranged along the length direction of the slide rail. An annular groove 15 is provided near one end of the screw rod 14 away from the fixed block 13. The screw rod 14 is assembled on the frame mechanism 3 through the annular groove 15;

[0033] The positioning mechanism 2 is located at one end of the push rod 10 away from the fixed block 13, and includes a horizontally arranged semi-cylinder 7, which is fixed on the frame mechanism 3, and a positioning groove 8 for positioning the substrate 6 is provided on the upper surface, and the positioning groove 8 is arranged radially along the semi-cylinder 7, and its cross section matches the outer wall of the substrate 6, and the substrate 6 can be placed and positioned along the cross-sectional direction thereof, and the bottom and both sides of the positioning groove 8 are respectively provided with strip grooves 9 corresponding to the three legs of the center conductor 5, and when the three legs are placed in the three strip grooves 9, the center of the center conductor 5 overlaps with the center of the substrate 6 and the axis of the push rod 10;

[0034] When the screw 14 rotates, the fixed block 13 can drive the push rod 10 to move from one end to the other end of the semi-cylinder 7;

[0035] The entire row of blocks 4 is in the shape of an elongated strip and is located directly above the semi-cylinder 7 , and is used to press down the installed substrate 6 and the central conductor 5 .

[0036] The working principle of the tightening mechanism 1 is as follows: the screw 14 is installed on the frame mechanism 3 through the annular groove 15, and cannot move in its axial direction by itself, but can only rotate 360° along its axial direction. Since the screw 14 is threadedly connected to the fixed block 13, when the screw 14 cannot move, the fixed block 13 moves. Since the bottom of the fixed block 13 is installed on the sliding assembly, it moves along the guide rail 12 of the sliding assembly. The sliding assembly plays a role of limiting and guiding. The fixed block 13 is connected to the push rod 10, which can drive the push rod 10 to move back and forth along the guide rail 12.

[0037] In this embodiment: the end of the screw rod 14 away from the fixed block 13 is provided with a square groove 16 matching the torque wrench, and the annular groove 15 is connected to the frame mechanism 3 in the following way: a mounting portion for mounting the annular groove 15 is provided on the frame mechanism 3, and a mounting hole is provided on the mounting portion. The mounting hole and the annular groove 15 are clearance-matched and do not affect the rotation of the screw rod 14, and the mounting portion is composed of two parts detachably connected through the mounting hole.

[0038] A method for bonding a substrate 6 bonding tool for a circulator and an isolator, comprising the following steps:

[0039] (1) Prepare a bonding tool for the substrate 6 of the circulator and the isolator so that the top bar 10 is located outside the semi-cylinder 7;

[0040] (2) The substrate 6, the center conductor 5, and the substrate 6 are a group of components, and multiple groups of components are sequentially loaded into the positioning mechanism 2;

[0041] (3) Use the entire row of blocks 4 to lightly press the substrate 6 and the center conductor 5, rotate the screw 14, and move the push rod 10 toward the positioning mechanism 2, so that all substrates 6 and center conductors 5 are in contact with each other and no longer move;

[0042] (4) Remove the entire row of blocks 4 and use glue to bond the center conductor 5 in each group of components to the two substrates 6.

[0043] Compared with the prior art, this embodiment has the following three differences:

[0044] (1) In the prior art, due to the relative rotation during the processing, the maximum coaxiality of the product processed by the prior art processing technology reaches 0.2mm in diameter, which affects the later assembly performance. The present invention has a shaping block and no relative rotation characteristics, and the maximum coaxiality is only 0.06mm.

[0045] (2) In the prior art, each substrate 6 and center conductor 5 needs to be pressed down manually to fit onto the positioning surface. The present invention uses a shaping block and a non-rotating structure to fit all substrates 6 and center conductor 5 onto the positioning surface at one time. Therefore, the processing time of the present invention is 1 / 5 of that of the prior art, thus saving processing time.

[0046] (3) At the same time, the present invention has a square groove 16 at the tail end, which can be used in conjunction with a torque wrench to convert torque into thrust through the thread. Therefore, the present invention can maximise the force between the substrate 6 and the central conductor 5.

[0047] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions and improvements made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

Claims

1. A substrate bonding tool for a circulator and an isolator, used for assembling a substrate and a central conductor, wherein the central conductor comprises three legs evenly distributed along its radial direction, characterized in that: It includes a tightening mechanism, a positioning mechanism, a frame mechanism and a whole row block; The jacking mechanism comprises a sliding assembly, the sliding assembly comprises a slide rail and a slide table which can slide along the length direction of the slide rail, a fixed block is fixedly connected to the slide table, one end of the fixed block is horizontally fixedly connected to a push rod, and the other end is threadedly connected to a screw rod, the push rod and the screw rod are both arranged along the length direction of the slide rail, an annular groove is arranged near one end of the screw rod away from the fixed block, and the screw rod is assembled on the frame mechanism through the annular groove; The positioning mechanism is located at one end of the top bar away from the fixed block, and includes a horizontally arranged semi-cylinder, the semi-cylinder is fixed on the frame mechanism, and a positioning groove for positioning the substrate is provided on the upper surface, the positioning groove is arranged along the radial direction of the semi-cylinder, and its cross section matches the outer wall of the substrate, and the substrate can be placed and positioned along the cross-sectional direction thereof, and the bottom and both sides of the positioning groove are respectively provided with strip grooves corresponding to the three leg columns of the central conductor, and when the three leg columns are placed in the three strip grooves correspondingly, the center of the central conductor overlaps with the center of the substrate and the axis of the top bar; When the screw is rotated, the fixed block can drive the top bar to move from one end of the semi-cylinder to the other end; The entire row of blocks is in the shape of a long strip, located directly above the semi-cylinder, and is used to press down the installed substrate and the central conductor.

2. The substrate bonding tool for a circulator and an isolator according to claim 1, characterized in that: One end of the screw rod away from the fixing block is provided with a square groove for matching a torque wrench.

3. The substrate bonding tool for a circulator and an isolator according to claim 1, characterized in that: The annular groove is connected to the frame mechanism in such a way that a mounting portion for mounting the annular groove is provided on the frame mechanism, a mounting hole is provided on the mounting portion, the mounting hole is clearance-matched with the annular groove and does not affect the rotation of the screw, and the mounting portion is composed of two parts detachably connected through the mounting hole.

4. The bonding method of a substrate bonding tool for a circulator and an isolator according to claim 1, characterized in that: The following steps are involved: (1) Prepare a substrate bonding tool for the circulator and the isolator so that the top bar is located outside the semi-cylinder; (2) A substrate, a center conductor, and a substrate are a group of components, and multiple groups of components are sequentially loaded into the positioning mechanism; (3) Use the entire row of blocks to lightly press the substrate and the center conductor, rotate the screw, and move the push rod toward the positioning mechanism so that all substrates and the center conductor are in contact with each other and no longer move; (4) Remove the entire row of blocks and use glue to bond the center conductor in each group of components to the two substrates.

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