A parallel seam welding electrode structure with adjustable spacing

Abstract

The present invention discloses a parallel seam welding electrode structure with adjustable spacing, which is used to adjust the spacing to achieve the packaging of tube shells of different sizes, and includes a first adjustment device and a second adjustment device, the first adjustment device and the second adjustment device are arranged relatively, and the first adjustment device and the second adjustment device both include an electrode bracket, a sliding electrode seat, an electrode shaft and a roller electrode. The present invention discloses a parallel seam welding electrode structure with adjustable spacing, which is provided with a sliding sliding electrode seat, and the scale on the sliding electrode seat is adjusted to align with the scale indicator mark on the electrode bracket according to the spacing of the roller electrode required by the size of the packaged product, and then the sliding electrode seat is fixed to the electrode bracket with a fixing screw. Each time a product is replaced, it is only necessary to adjust the position of the electrode seat according to the product size.

Description

Technical Field

[0001] The invention belongs to the technical field of parallel seam welding, and in particular relates to a parallel seam welding electrode structure with adjustable spacing. Background Art

[0002] Parallel seam welding is a type of resistance welding that uses low voltage and instantaneous high current to flow through metal contact points, causing the metal to quickly heat up and melt together, thereby achieving welding. In semiconductor device packaging, the chip is first attached to a ceramic or metal tube shell with a metal ring frame, and then the pad (circuit signal input and output port) on the chip is connected to the inner pin on the tube shell by wire bonding. Finally, the metal cover is covered and the cover and the tube shell are welded together using a parallel seam welder. There are two left and right electrode holders on the parallel seam welder, each of which has an electrode holder, and each of which has a roller electrode. The two roller electrodes press the metal cover to be packaged and the metal frame on the tube shell. The current output by the welding power supply is divided into two currents from one of the conical roller electrodes. One current flows through the cover, and the other current flows through the metal ring frame of the tube shell and returns to the welding power supply through the other roller electrode. The entire circuit generates a large amount of heat at the high resistance formed by the contact between the electrode and the cover, so that the contact point is in a molten state to form a welding point. Since a pair of roller electrodes move linearly on the cover plate, and the welding power supply outputs a pulse current, a series of welds are formed. These welds overlap with each other to form a whole sealing line. For a rectangular tube shell, after welding the two opposite sides of the cover plate, the tube shell is rotated 90° relative to the electrode, and the other two opposite sides are welded in the vertical direction, thus forming the entire package of the shell.

[0003] At present, parallel seam welding machines are used in the field of semiconductor device packaging, which are divided into normal pressure packaging (in the atmosphere or high-purity nitrogen environment in the glove box) and high vacuum packaging. At present, high vacuum packaging means that the entire electrode system (electrode bracket, electrode seat, electrode shaft and roller electrode) is in a high vacuum cavity. In order to increase the sealing of the cavity and reduce the failure rate of each hardware, it is not convenient to use a spacing drive motor. The spacing between a pair of roller electrodes installed on the electrode seat cannot be adjusted in real time. At present, the spacing between a pair of roller electrodes is adjusted by designing and processing electrode seats of different sizes, thereby realizing the packaging of tube shells of different sizes. Every time a device package is changed, a pair of electrode seats must be reprocessed for this device, which increases the processing cost and reduces production efficiency.

[0004] Therefore, further improvements are made to the above problems. Summary of the invention

[0005] The main purpose of the present invention is to provide a parallel seam welding electrode structure with adjustable spacing, which is provided with a slidable sliding electrode seat. According to the spacing of the roller electrodes required by the size of the packaged product, the scale on the slidable electrode seat is adjusted to align with the scale indicator mark on the electrode holder, and then the slidable electrode seat is fixed to the electrode holder with a fixing screw. Each time a product is changed, it is only necessary to adjust the position of the electrode seat according to the product size without redesigning and processing the electrode seat, so as to realize the packaging of tube shells of different sizes.

[0006] To achieve the above objectives, the present invention provides a parallel seam welding electrode structure with adjustable spacing, which is used to adjust the spacing to achieve the packaging of tube shells of different sizes, including a first adjustment device and a second adjustment device, the first adjustment device and the second adjustment device are arranged opposite to each other, and the first adjustment device and the second adjustment device both include an electrode bracket, a sliding electrode seat, an electrode shaft and a roller electrode, wherein:

[0007] The sliding electrode seat is installed on the electrode bracket and slides relative to the electrode bracket (thereby adjusting the spacing between the roller electrodes of the two adjustment devices). The sliding electrode seat is provided with an axial hole, the electrode shaft passes through the sliding electrode seat through the axial hole, and the roller electrode is fixedly installed at one end of the electrode shaft.

[0008] As a further preferred technical solution of the above technical solution, the electrode bracket includes a positioning structure, a fixing hole, a scale indicator and a fixing screw. The sliding electrode seat is installed on the electrode bracket through the positioning structure (used to install the sliding electrode seat on the electrode bracket), and the fixing screw passes through the sliding electrode seat and is installed in the fixing hole (used to fix the sliding electrode seat to the electrode bracket).

[0009] As a further preferred technical solution of the above technical solution, the sliding electrode seat is provided with a sliding guide groove portion and a scale scale, the positioning structure is installed on the sliding guide groove portion and the sliding guide groove portion slides relative to the positioning structure (thereby adjusting the spacing between the roller electrodes of the two adjustment devices), the scale indicator is located above the scale scale and the scale indicator is used to indicate the scale of the scale scale (thereby understanding the sliding distance of the sliding electrode seat), and the fixing screw passes through the sliding guide groove portion and penetrates the sliding electrode seat and is installed in the fixing hole (for fixing the sliding electrode seat to the electrode bracket).

[0010] As a further preferred technical solution of the above technical solution, the roller electrode is fixed to one end of the electrode shaft by a screw.

[0011] As a further preferred technical solution of the above technical solution, the positioning structure includes a first positioning pin and a second positioning pin, the fixing hole is located between the first positioning pin and the second positioning pin, and the first positioning pin and the second positioning pin are installed with the sliding guide groove portion (so that the sliding guide groove portion slides relative to the first positioning pin and the second positioning pin to adjust the distance so that the distance between the roller electrodes of the two devices matches the size of the tube shell, and after adjustment, it is fixed by a fixing screw to realize parallel seam welding of the semiconductor device).

[0012] As a further preferred technical solution of the above technical solution, the roller electrode is a conical roller electrode, and the screw is a copper screw.

[0013] As a further preferred technical solution of the above technical solution, the middle of the sliding guide groove portion is rectangular and both ends are semicircular, and the width of the sliding guide groove portion is (slightly) larger than the size of the positioning structure (for matching). BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 It is an exploded view of a spacing-adjustable parallel seam welding electrode structure of the present invention.

[0015] Figure 2 It is a schematic structural diagram of an assembled parallel seam welding electrode structure with adjustable spacing according to the present invention.

[0016] The reference numerals include: 1. electrode bracket; 2. fixing hole; 3. scale indicator; 41. first positioning; 42. second positioning pin; 5. sliding electrode seat; 51. axial hole; 6. scale ruler; 7. sliding guide groove; 8. fixing screw; 9. electrode shaft; 10. screw; 11. roller electrode; 10. first device; 20. second device. DETAILED DESCRIPTION

[0017] The following description is used to disclose the present invention so that those skilled in the art can implement the present invention. The preferred embodiments described below are only examples, and those skilled in the art can think of other obvious variations. The basic principles of the present invention defined in the following description can be applied to other embodiments, variations, improvements, equivalents, and other technical solutions that do not deviate from the spirit and scope of the present invention.

[0018] In the preferred embodiment of the present invention, those skilled in the art should note that the tube shell, screws and fixing screws involved in the present invention can be regarded as prior art.

[0019] Preferred embodiments.

[0020] The present invention discloses a parallel seam welding electrode structure with adjustable spacing, which is used to adjust the spacing to realize the packaging of tube shells of different sizes, and includes a first adjustment device 10 and a second adjustment device 20, wherein the first adjustment device 10 and the second adjustment device 20 are arranged opposite to each other, and the first adjustment device 10 and the second adjustment device 20 both include an electrode bracket 1, a sliding electrode seat 5, an electrode shaft 9 and a roller electrode 11, wherein:

[0021] The sliding electrode seat 5 is installed on the electrode bracket 1 and the sliding electrode seat 5 slides relative to the electrode bracket 1 (thereby adjusting the spacing between the roller electrodes of the two adjustment devices), and the sliding electrode seat 5 is provided with an axial hole 51, the electrode shaft 9 passes through the sliding electrode seat 5 through the axial hole 51, and the roller electrode 11 is fixedly installed at one end of the electrode shaft 9.

[0022] Specifically, the electrode bracket 1 includes a positioning structure, a fixing hole 2, a scale indicator 3 and a fixing screw 8. The sliding electrode seat 5 is installed on the electrode bracket 1 through the positioning structure (used to install the sliding electrode seat on the electrode bracket), and the fixing screw 8 passes through the sliding electrode seat 5 and is installed in the fixing hole 2 (used to fix the sliding electrode seat on the electrode bracket).

[0023] More specifically, the sliding electrode seat 5 is provided with a sliding guide groove portion 7 and a scale scale 6, the positioning structure is installed on the sliding guide groove portion 7 and the sliding guide groove portion 7 slides relative to the positioning structure (thereby adjusting the spacing between the roller electrodes of the two adjusting devices), the scale indicator position 6 is above the scale scale 6 and the scale indicator 3 is used to indicate the scale of the scale scale 6 (thereby understanding the sliding distance of the sliding electrode seat, through operations including but not limited to laser processing, mechanical processing and ink printing), the fixing screw 8 passes through the sliding guide groove portion 7 and penetrates the sliding electrode seat 5 and is installed in the fixing hole 2 (for fixing the sliding electrode seat to the electrode bracket).

[0024] Furthermore, the roller electrode is fixed to one end of the electrode shaft 9 by a screw 10 .

[0025] Furthermore, the positioning structure includes a first positioning pin 41 and a second positioning pin 42, the fixing hole 2 is located between the first positioning pin 41 and the second positioning pin 42, and the first positioning pin 41 and the second positioning pin 42 are installed with the sliding guide groove portion 7 (so that the sliding guide groove portion slides relative to the first positioning pin and the second positioning pin to adjust the distance so that the distance between the roller electrodes of the two devices matches the size of the tube shell, and after adjustment, it is fixed by a fixing screw to achieve parallel seam welding of the semiconductor device).

[0026] Preferably, the roller electrode 11 is a conical roller electrode, and the screw 10 is a copper screw.

[0027] Preferably, the middle of the sliding guide groove portion 7 is rectangular and both ends are semicircular, and the width of the sliding guide groove portion is (slightly) larger than the size of the positioning structure (for matching).

[0028] Preferably, if Figure 2 As shown, according to the size L of the required packaged device (tube shell), the position of the sliding electrode seat 5 is adjusted respectively, the correct scale position is aligned with the scale index 3 on the electrode holder 1, and finally the sliding electrode seat 5 is locked on the electrode holder 1 with the fixing screw 8.

[0029] Preferably, the sliding electrode seat has a sliding guide groove and a scale. The electrode shaft passes through the sliding electrode seat, and the other end of the electrode shaft is covered with a conical roller electrode and locked with a copper screw. Then the sliding electrode seat is put on the positioning pin on the electrode holder as a whole, and the scale on the sliding electrode seat is adjusted to align with the scale indicator mark on the electrode holder according to the conical roller electrode spacing required by the packaged product size, and then the sliding electrode seat is fixed to the electrode holder with a fixing screw. Every time a product is changed, it is only necessary to adjust the position of the electrode seat according to the product size, without having to redesign and process the electrode seat.

[0030] It is worth mentioning that the technical features such as the tube shell, screws and fixing screws involved in the patent application of the present invention should be regarded as the prior art. The specific structure, working principle and possible control method and spatial layout method of these technical features can be selected by conventional methods in the field, and should not be regarded as the inventive point of the patent of the present invention. The patent of the present invention will not be further elaborated.

[0031] For those skilled in the art, it is still possible to modify the technical solutions described in the aforementioned embodiments, or to make equivalent substitutions for some of the technical features therein. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

Claims

1. A parallel seam welding electrode structure with adjustable spacing, used for adjusting the spacing to realize the packaging of tube shells of different sizes, comprising a first adjusting device and a second adjusting device, wherein the first adjusting device and the second adjusting device are arranged opposite to each other, characterized in that: The first adjusting device and the second adjusting device both include an electrode bracket, a sliding electrode seat, an electrode shaft and a roller electrode, wherein: The sliding electrode seat is mounted on the electrode bracket and slides relative to the electrode bracket. The sliding electrode seat is provided with an axial hole. The electrode shaft passes through the sliding electrode seat through the axial hole. The roller electrode is fixedly mounted on one end of the electrode shaft. The electrode bracket comprises a positioning structure, a fixing hole, a scale indicator and a fixing screw, the sliding electrode seat is installed on the electrode bracket through the positioning structure, and the fixing screw penetrates the sliding electrode seat and is installed in the fixing hole; The sliding electrode seat is provided with a sliding guide groove and a scale, the positioning structure is installed on the sliding guide groove and the sliding guide groove slides relative to the positioning structure, the scale indicator is located above the scale and the scale indicator is used to indicate the scale of the scale, and the fixing screw passes through the sliding guide groove and penetrates the sliding electrode seat and is installed in the fixing hole; The positioning structure includes a first positioning pin and a second positioning pin, the fixing hole is located between the first positioning pin and the second positioning pin, the first positioning pin and the second positioning pin are installed in the sliding guide groove part, so that the sliding guide groove part slides relative to the first positioning pin and the second positioning pin to adjust the distance, so that the distance between the roller electrodes of the two adjustment devices matches the size of the tube shell, and after adjustment, they are fixed by fixing screws to achieve parallel seam welding of semiconductor devices; The middle of the sliding guide groove is rectangular and the two ends are semicircular; According to the size L of the required packaged device, adjust the positions of the sliding electrode seats of the two adjustment devices respectively, align the correct scale position with the scale index on the electrode holder, and finally lock the sliding electrode seats on the electrode holder respectively with the fixing screws; The roller electrode is a conical roller electrode.

2. The parallel seam welding electrode structure with adjustable spacing according to claim 1, characterized in that: The roller electrode is fixed to one end of the electrode shaft by a screw.

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