Melt riveting device and melt riveting method for beam forming network assembly

Abstract

The invention relates to the technical field of antenna part assembling and processing, in particular to a fusion riveting device and a fusion riveting method for beam forming network assembling. The melting riveting device comprises a working platform, an ultrasonic melting riveting machine head is installed on the working platform through a supporting assembly, the energy output end of the ultrasonic melting riveting machine head is connected with an upper melting riveting tool and can control the upper melting riveting tool to move up and down, and a lower melting riveting tool matched with the upper melting riveting tool is installed on the working platform. The lower fusion riveting tool is used for placing a wave beam forming network assembly formed by assembling a wave beam network upper plate, a wave beam network circuit, a wave beam network lower plate and a plurality of plastic fusion riveting columns, and a plurality of bosses are arranged on the bottom surface of the upper fusion riveting tool; the positions of the bosses are in one-to-one correspondence with the positions of the plastic fusion riveting columns, so that the tail ends of the plastic fusion riveting columns are subjected to fusion welding processing during working, and the beam forming network assemblies are locked into a whole. According to the invention, locking connection of the wave beam forming network assembly can be completed with high efficiency and high quality, and the locking performance is good.

Description

Technical Field

[0001] The present invention relates to the technical field of antenna component assembly and processing, and in particular to a riveting device and a riveting method for assembling a beam forming network. Background Art

[0002] The beamforming network, also known as the Butler matrix circuit, is the core component of the multi-beam antenna. It is mainly assembled by PCB circuit boards such as the beam network upper board, the beam network circuit and the beam network lower board through a certain structural connection method. In order to ensure the electrical coupling effect between the circuit boards in the assembly, the industry currently mainly uses plastic screws and nuts for locking and fixing in the design and manufacture of multi-beam antennas. However, in actual engineering, in order to ensure the gap after locking and pressing, there are many screw fixing points on the beamforming network. During assembly, they need to be tightened one by one with an electric screwdriver, which is time-consuming and labor-intensive. At the same time, in order to prevent the screws from loosening, it is necessary to apply screw glue to each screw and nut combination position to prevent them from loosening, which is quite cumbersome. On the other hand, due to the characteristics of plastic screws themselves and the difficulty in accurately controlling the torque and incoming material size during assembly, problems or hidden dangers that affect locking and protection, such as slipping teeth and screw breakage, are prone to occur, which is directly related to the realization and stability of beamforming network performance indicators.

[0003] Based on this, it is necessary to provide a device and process with high assembly efficiency and good locking performance to meet the production needs of beamforming networks. Summary of the invention

[0004] The purpose of the present invention is to provide a device and process with high assembly efficiency and good locking performance to meet the production requirements of beamforming networks.

[0005] To achieve the purpose of the present invention, the following technical solutions are adopted:

[0006] A riveting device for assembling a beam forming network, the riveting device comprising a working platform, an ultrasonic riveting head being mounted on the working platform via a supporting assembly, an energy output end of the ultrasonic riveting head being connected to an upper riveting tooling and being capable of controlling the up and down movement of the upper riveting tooling, a lower riveting tooling matching the upper riveting tooling being mounted on the working platform, the lower riveting tooling being used for placing a beam forming network component assembled from an upper beam network board, a beam network circuit, a lower beam network board and a plurality of plastic riveting columns, a plurality of bosses being arranged on the bottom surface of the upper riveting tooling, the positions of the bosses being one-to-one with the positions of the plastic riveting columns for performing a welding process on the tail ends of the plastic riveting columns during operation so as to lock the beam forming network component into one piece.

[0007] A further improvement is that a first groove is provided on the bottom surface of the boss for forming a preset shape after the tail end of the plastic rivet column is melted.

[0008] A further improvement is that a positioning groove for placing and limiting the beam forming network component is provided on the lower rivet tooling, and a plurality of second grooves for placing and limiting the plastic rivet column are provided in the positioning groove.

[0009] A further improvement is that a tooling slide rail is provided on the working platform, a tooling fixing plate is slidably mounted on the tooling slide rail, and a fixing groove is provided on the tooling fixing plate for fixing and mounting the lower riveting tool.

[0010] A further improvement is that the melting and riveting device further comprises a control cabinet for controlling the operation of the entire melting and riveting device, the working platform is laid on the control cabinet, and a switch button and an emergency stop control button are arranged on the working platform.

[0011] A further improvement is that a positioning piece is provided on one side of the tool fixing plate, and an infrared sensing switch is provided on the working platform. The positioning piece is used to position the lower tooling of the riveting machine by triggering the infrared sensing switch and to trigger the infrared sensing switch to start the ultrasonic riveting machine head to perform the welding process.

[0012] A further improvement is that a frequency adjustment switch and a display screen are provided on the ultrasonic riveting head for adjusting the welding frequency parameters of the ultrasonic riveting head.

[0013] A further improvement is that the first groove is a hemispherical groove.

[0014] A further improvement is that the second groove is a polygonal groove.

[0015] A further improvement is that the riveting method applied to the riveting device comprises the following steps:

[0016] The head ends of the plurality of plastic riveting columns are sequentially and vertically installed into the second groove on the positioning groove of the riveting lower tooling;

[0017] Pass the beam network lower board, the beam network circuit and the beam network upper board through the plastic rivet column in sequence, and make the tail end of the plastic rivet column protrude from the beam network upper board, and limit the beam forming network component through the positioning groove;

[0018] The ultrasonic melting and riveting machine head is started to press the boss of the melting and riveting upper tooling downward and to heat and weld the tail end of the plastic melting and riveting column through ultrasonic wave;

[0019] After the welding is completed, the ultrasonic riveting machine head is closed, and the tail end of the plastic riveting column forms a preset shape so that the beam forming network component is locked as a whole.

[0020] The beneficial effects of the present invention are:

[0021] The present invention provides a riveting device and a riveting method for beamforming network assembly, which can efficiently and high-quality complete the locking connection of beamforming network components, have good locking performance, and improve product performance while ensuring the consistency of product assembly and performance, and greatly improve processing efficiency and reduce labor costs. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] Figure 1 An exploded diagram of a beamforming network component in the present invention;

[0023] Figure 2 It is a schematic diagram of the assembly structure of the beamforming network component and the riveting tooling;

[0024] Figure 3 It is a structural schematic diagram of the riveting tooling;

[0025] Figure 4 This is a schematic diagram of the planed surface of the tooling for riveting;

[0026] Figure 5 This is an overall structural diagram of a riveting device for assembling a beamforming network according to the present invention;

[0027] Figure 6 This is a schematic diagram of the beamforming network component structure before the riveting process;

[0028] Figure 7 Schematic diagram of the beamforming network component structure after riveting.

[0029] Description of reference numerals:

[0030] 10. Beam forming network component; 101. Beam network upper board; 102. Beam network circuit; 103. Beam network lower board; 104. Plastic melting rivet column; 20. Platform module; 21. Working platform; 22. Tooling slide rail; 23. Tooling fixing plate; 24. Fixing seat; 25. Support column; 26. Positioning piece; 27. Infrared sensor switch; 30. Melting rivet module; 31. Ultrasonic melting rivet head; 32. Frequency adjustment switch; 33. Melting rivet upper tooling; 331. Boss; 332. First groove; 34. Melting rivet lower tooling; 341. Positioning groove; 342. Second groove; 40. Control module; 41. Switch button; 42. Control chassis. DETAILED DESCRIPTION

[0031] In order to make the purpose, technical solution and advantages of the present invention more clearly understood, the present invention is further described in detail below in conjunction with the accompanying drawings and specific implementation methods. It should be understood that the specific implementation methods described herein are only used to explain the present invention and do not limit the scope of protection of the present invention.

[0032] It should be noted that when an element is referred to as being "fixed to", "disposed on", "fixed on" or "installed on" another element, it may be directly on the other element or there may be a central element. When an element is considered to be "connected to" another element, it may be directly connected to the other element or there may be a central element at the same time. Furthermore, when an element is considered to be "transmission-connected" to another element, the two can achieve power transmission, and its specific implementation method can be implemented using the existing technology, which will not be repeated here. When an element is perpendicular or approximately perpendicular to another element, it means that the ideal state of the two is vertical, but due to the influence of manufacturing and assembly, there may be a certain vertical error. The terms "vertical", "horizontal", "left", "right" and similar expressions used in this article are for illustrative purposes only and do not represent the only implementation method.

[0033] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as those commonly understood by those skilled in the art of the present invention. The terms used herein in the specification of the present invention are only for the purpose of describing specific embodiments and are not intended to limit the present invention. The term "and / or" used herein includes any and all combinations of one or more related listed items.

[0034] The “first” and “second” involved in the present invention do not represent specific quantities and orders, but are merely used to distinguish names.

[0035] Please refer to the attached Figure 1 -Attached Figure 7 The embodiment of the present invention proposes a riveting device for assembling a beam forming network, which is used to automatically weld a beam forming network component 10 assembled from a beam network upper board 101, a beam network circuit 102, a beam network lower board 103 and a plurality of plastic riveting columns 104. The riveting device mainly includes a platform module 20, a riveting module 30 and a control module 40; the platform module 20 includes a working platform 21, a tooling fixing plate 22, a tooling slide rail 23, a fixing seat 24, a support column 25, a positioning piece 26, and an infrared sensing switch 27; the riveting module 30 includes an ultrasonic riveting head 31, a frequency adjustment switch 32, a riveting upper tooling 33, and a riveting lower tooling 34; the control module 40 includes a switch button 41 and a control chassis 42.

[0036] The following is a detailed description of the structural composition and working principle of a riveting device for beamforming network assembly proposed in an embodiment of the present invention:

[0037] The riveting device includes a working platform 21, which is a metal plate. An ultrasonic riveting head 31 is installed on the working platform 21 through a supporting component. The energy output end of the ultrasonic riveting head 31 is connected to an upper riveting tool 33 and can control the up and down movement of the upper riveting tool 33. A lower riveting tool 34 matching the upper riveting tool 33 is installed on the working platform 21. The lower riveting tool 34 is used to place a beam forming network component 10 assembled from a beam network upper board 101, a beam network circuit 102, a beam network lower board 103 and a plurality of plastic riveting columns 104. A plurality of bosses 331 are provided on the bottom surface of the upper riveting tool 33. The positions of the bosses 331 and the positions of the plastic riveting columns 104 are one-to-one corresponding to the positions of the plastic riveting columns 104, so that the tail ends of the plastic riveting columns 104 are welded during operation so that the beam forming network component 10 is locked as a whole.

[0038] It can be understood that during use of the device of the present invention, the beam forming network component 10 is placed on the lower rivet tooling 34, the ultrasonic rivet head 31 applies downward pressure through the upper rivet tooling 33, and transmits ultrasonic energy to melt the tail end of the plastic rivet column 104 so that the tail end forms a preset shape to prevent the plastic rivet column 104 from detaching, thereby making the beam network upper board 101, the beam network circuit 102, and the beam network lower board 103 tightly combined into a whole through the plastic rivet column 104. The advantage of the rivet device of the present invention is that it can provide a fast and reliable assembly locking method while ensuring assembly accuracy and product quality consistency.

[0039] The working principle of the ultrasonic riveting head 31 is mainly to apply ultrasonic energy to the contact surface of two objects, generate heat energy through friction, and make the contact surface melt and fuse together quickly. That is, energy conversion, the 50 / 60 Hz current of the ultrasonic generator is converted into high-frequency electrical energy through the frequency adjustment switch 32, and the high-frequency electrical energy is converted into mechanical motion of the same frequency through the transducer, and this mechanical motion is transmitted to the riveting upper tooling 33 through the horn device.

[0040] In this embodiment, the support assembly includes a fixed seat 24 and a support column 25. A fixed seat 24 is provided on the working platform 21 on one side of the lower riveting tooling 34. The support column 25 stands in the fixed seat 24. The upper end of the support column 25 is installed with the ultrasonic riveting head 31.

[0041] In this embodiment, a first groove 332 is formed on the bottom surface of the boss 331 to allow the tail end of the plastic rivet column 104 to be melted to form a preset shape.

[0042] Preferably, the first groove 332 is a hemispherical groove, and the depth of the hemispherical groove is about 6.5 mm. By designing the first groove 332 as a hemispherical groove, the tail end of the plastic rivet column 104 will form a mushroom head shape after melting. This can ensure that the shape of each welding point after welding is consistent, which is beneficial to quality control and aesthetics in mass production. Of course, those skilled in the art can also design the first groove 332 into other shapes according to actual needs, not limited to the hemispherical groove, as long as it can achieve similar effects, and this embodiment does not make specific limitations.

[0043] When the hemispherical groove on the upper rivet tooling 33 contacts the tail end of the plastic rivet column 104, due to the large acoustic resistance, local high temperature will be generated, and then a certain pressure will be applied by the ultrasonic rivet head 31, and the tail end of the plastic rivet column 104 will melt rapidly. When the ultrasonic rivet head 31 stops working, a certain pressure will be maintained for a few seconds, so that the tail end of the molten plastic rivet column 104 solidifies into a mushroom head shape under pressure and fits tightly with the beam network upper plate 101.

[0044] In this embodiment, a positioning groove 341 for placing and limiting the beam forming network component 10 is provided on the lower rivet tooling 34, and the shape of the positioning groove 341 is adapted to the outer contour shape of the beam forming network component 10. A plurality of second grooves 342 for placing and limiting the plastic rivet column 104 are arranged in the positioning groove 341, and the shape of the second groove 342 is adapted to the shape of the head end of the plastic rivet column 104.

[0045] The depth of the positioning groove 341 is about 2 mm, and the gaps between the front, rear, left and right sides of the positioning groove 341 and the edges of the beamforming network component 10 are about 0.1 mm.

[0046] Preferably, the second groove 342 is a polygonal groove, such as a pentagonal or hexagonal groove, and those skilled in the art can set it according to actual needs. In this embodiment, the second groove 342 is a hexagonal groove, and the head end of the plastic rivet column 104 is correspondingly a hexagonal column.

[0047] In this embodiment, a tooling slide rail 22 is provided on the working platform 21 , a tooling fixing plate 23 is slidably mounted on the tooling slide rail 22 , and a fixing groove is provided on the tooling fixing plate 23 for fixing and mounting the lower riveting tool 34 .

[0048] The welding of products of different sizes can be satisfied by replacing different upper riveting tools 33 and lower riveting tools 34 .

[0049] Preferably, the tooling slide rail 22 is a double slide rail, and the distance between the two rails is about 200 mm.

[0050] In a feasible scheme of the present embodiment, a positioning piece 26 is provided on one side of the tool fixing plate 23, and an infrared sensing switch 27 is provided on the working platform 21. The positioning piece 26 is a metal part, which cooperates with the infrared sensing switch 27. The positioning piece 26 is used to position the lower riveting tool 34 by triggering the infrared sensing switch 27 and to trigger the infrared sensing switch 27 to start the ultrasonic riveting machine head 31 to perform the welding process.

[0051] In this embodiment, the melting and riveting device further includes a control box 42 for controlling the operation of the entire melting and riveting device. The working platform 21 is laid on the control box 42 . The working platform 21 is provided with a switch button 41 and an emergency stop control button.

[0052] The ultrasonic riveting machine head 31 , the infrared sensor switch 27 , the switch button 41 and the emergency stop control button are all electrically connected to the control box 42 .

[0053] Specifically, the control box 42 is programmed and controlled by a single-chip microcomputer. The control program of the control box 42 can control the ultrasonic riveting head 31 to move the upper riveting tooling 33 up and down, control the forward and backward movement of the tooling fixing plate 23 on the tooling slide rail 22 to move the lower riveting tooling 34 to a preset position, thereby realizing the positioning of the plastic riveting column 104 and setting the welding time.

[0054] In this embodiment, a frequency adjustment switch 32 and a display screen are provided on the ultrasonic riveting head 31 for adjusting the welding frequency parameters of the ultrasonic riveting head 31 .

[0055] After the plastic rivet column 104, the beam network lower plate 103, the beam network circuit 102, and the beam network upper plate 101 are assembled into the rivet lower tooling 34, the switch button 41 can be activated. The startup command will automatically call the relevant control program set in the control box 42, so that the rivet lower tooling 34 together with the beam forming network component 10 are sent to the bottom of the rivet upper tooling 33 (i.e., the welding area) through the tooling slide rail 22, and the positioning piece 26 set on the tooling fixing plate 23 will trigger the infrared sensor set on the working platform 21 Switch 27, the ultrasonic riveting machine head 31 controls the upper riveting tooling 33 to press down and heat. The tail ends of all the ultrasonically heated plastic riveting columns 104 will form a mushroom head shape under the pressing and heating of the boss 331 of the upper riveting tooling 33, and lock the beam network lower plate 103, the beam network circuit 102, and the beam network upper plate 101 into one. When the product welding is completed, the lower riveting tooling 34 together with the beam forming network component 10 will automatically withdraw from the welding area, thereby completing the welding process of the beam forming network component 10.

[0056] This embodiment accordingly proposes a riveting method applied to the riveting device, comprising the following steps:

[0057] The head ends of the plurality of plastic rivet columns 104 are sequentially and vertically installed into the second groove 342 on the positioning groove 341 of the rivet lower tooling 34 .

[0058] The beam network lower board 103 , the beam network circuit 102 and the beam network upper board 101 are sequentially passed through the plastic rivet studs 104 so that the tail ends of the plastic rivet studs 104 protrude from the beam network upper board 101 , and the beam forming network component 10 is limited by the positioning grooves 341 .

[0059] The ultrasonic melting and riveting machine head 31 is started to press the boss 331 of the melting and riveting upper tooling 33 downward and heat and weld the tail end of the plastic melting and riveting column 104 through ultrasonic waves.

[0060] After the welding is completed, the ultrasonic riveting machine head 31 is closed, and the tail end of the plastic riveting column 104 forms a preset shape so that the beam forming network component 10 is locked as a whole.

[0061] The present invention provides a riveting device and a riveting method for beamforming network assembly, which can efficiently and high-quality complete the locking connection of the beamforming network component 10, have good locking performance, and while improving product performance, also ensure the consistency of product assembly and performance, and greatly improve processing efficiency and reduce labor costs.

[0062] The technical features of the above embodiments may be combined arbitrarily. To make the description concise, not all possible combinations of the technical features in the above embodiments are described. However, as long as there is no contradiction in the combination of these technical features, they should be considered to be within the scope of this specification.

[0063] The above-mentioned embodiments only express the specific implementation of the present invention, and the description thereof is relatively specific and detailed, but it cannot be understood as limiting the scope of the present invention. It should be pointed out that for ordinary technicians in this field, several variations and improvements can be made without departing from the concept of the present invention, and these all belong to the protection of the present invention.

Claims

1. A riveting device for beamforming network assembly, It is characterized in that The riveting device includes a working platform, on which an ultrasonic riveting head is installed through a supporting component, an energy output end of the ultrasonic riveting head is connected to an upper riveting tooling and can control the up and down movement of the upper riveting tooling, a lower riveting tooling matching the upper riveting tooling is installed on the working platform, the lower riveting tooling is used to place a beam forming network component assembled from a beam network upper board, a beam network circuit, a beam network lower board and a plurality of plastic riveting columns, a plurality of bosses are provided on the bottom surface of the upper riveting tooling, and the positions of the bosses and the positions of the plastic riveting columns are one-to-one matched to perform a welding process on the tail end of the plastic riveting column during operation so that the beam forming network component is locked as a whole.

2. A riveting device for assembling a beamforming network according to claim 1, It is characterized in that The bottom surface of the boss is provided with a first groove for melting the tail end of the plastic rivet column to form a preset shape.

3. A riveting device for assembling a beamforming network according to claim 2, It is characterized in that A positioning groove for placing and limiting the beam forming network component is provided on the lower rivet tooling, and a plurality of second grooves for placing and limiting the plastic rivet column are arranged in the positioning groove.

4. A riveting device for assembling a beamforming network according to claim 1, It is characterized in that The working platform is provided with a tooling slide rail, a tooling fixing plate is slidably mounted on the tooling slide rail, and a fixing groove is provided on the tooling fixing plate for fixing and mounting the lower riveting tool.

5. A riveting device for assembling a beamforming network according to claim 1, It is characterized in that The riveting device further comprises a control cabinet for controlling the operation of the entire riveting device, the working platform is laid on the control cabinet, and a switch button and an emergency stop control button are arranged on the working platform.

6. A riveting device for assembling a beamforming network according to claim 4, It is characterized in that A positioning piece is provided on one side of the tool fixing plate, and an infrared sensing switch is provided on the working platform. The positioning piece is used to position the lower tooling for riveting by triggering the infrared sensing switch and to start the ultrasonic riveting machine head for welding processing by triggering the infrared sensing switch.

7. A riveting device for assembling a beamforming network according to claim 1, It is characterized in that The ultrasonic riveting machine head is provided with a frequency adjustment switch and a display screen for adjusting the welding frequency parameters of the ultrasonic riveting machine head.

8. A riveting device for assembling a beamforming network according to claim 2, It is characterized in that The first groove is a hemispherical groove.

9. A riveting device for assembling a beamforming network according to claim 3, It is characterized in that The second groove is a polygonal groove.

10. A riveting device for assembling a beamforming network according to claim 3, It is characterized in that The riveting method applied to the riveting device comprises the following steps: The head ends of the plurality of plastic riveting columns are sequentially and vertically installed into the second groove on the positioning groove of the riveting lower tooling; Pass the beam network lower board, the beam network circuit and the beam network upper board through the plastic rivet column in sequence, and make the tail end of the plastic rivet column protrude from the beam network upper board, and limit the beam forming network component through the positioning groove; The ultrasonic melting and riveting machine head is started to press the boss of the melting and riveting upper tooling downward and to heat and weld the tail end of the plastic melting and riveting column through ultrasonic wave; After the welding is completed, the ultrasonic riveting machine head is closed, and the tail end of the plastic riveting column forms a preset shape so that the beam forming network component is locked as a whole.

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