Ultrasonic welding head and method

Abstract

The invention belongs to the technical field of warm edge strip frame welding, discloses an ultrasonic welding head and a method, and aims to solve the problems of large welding deviation and poor stability caused by low welding angle positioning precision and insufficient strip frame support of the conventional welding head. The machine head comprises a base, a clamping assembly, an ultrasonic welding head and a supporting assembly. A strip frame is placed on a first supporting plate on the base, and an inner angle pressing plate and an outer angle pressing plate of the clamping assembly oppositely clamp a weld fillet and are matched with the downward pressing assembly to achieve three-dimensional positioning. The supporting assembly supports and positions the whole strip frame and the adjacent welding corners through a movable moving seat, a second supporting plate, an inner base plate and an outer base plate. The welding method adopts a mode of combining multi-directional positioning and clamping with integral supporting, and is adaptive to strip frames with different specifications. The welding precision, the welding angle strength and the strip frame stability are improved, pseudo soldering and size deviation are reduced, and the production efficiency and the product percent of pass are improved.

Description

TECHNICAL FIELD

[0001] The application belongs to the technical field of warm edge strip frame welding, and particularly relates to an ultrasonic welding machine head and method. BACKGROUND

[0002] In the field of energy saving of hollow glass in building doors and windows, the warm edge strip frame is an important component for improving the heat preservation and insulation performance of doors and windows, and the welding forming quality of the warm edge strip frame directly affects the sealing performance, structural stability and energy saving effect of the hollow glass. The welding precision and strength of the welding angle are key factors determining the overall quality of the warm edge strip frame. At present, the warm edge strip frame is mostly formed by inserting four groups of profiles at the head and tail and then welding through the ultrasonic welding process. The ultrasonic welding has become the mainstream welding method in the production of the warm edge strip frame due to the advantages of no open flame, no consumables, high welding efficiency and clean welds. However, the existing ultrasonic welding machine head for the warm edge strip frame still has the following deficiencies: 1. Low positioning and fixing precision of the welding angle, large welding deviation. The existing ultrasonic welding machine head has a single fixing method for the welding angle of the warm edge strip frame, mostly using unilateral clamping or bilateral simple extrusion fixing. The three-dimensional positioning constraint of the welding angle is lacking, and the clamping force is unevenly distributed. In the ultrasonic welding process, high-frequency vibration easily causes the welding angle to shift and misalign. At the same time, uneven clamping force also causes local deformation of the welding angle, so that the welding angle connection is not tightly fitted. This not only affects the welding precision, but also easily causes the problem of false welding, resulting in insufficient strength of the welding angle and affecting the internal sealing performance of the hollow glass.

[0003] 2. Insufficient overall support of the strip frame, poor welding stability. The existing welding machine head only simply supports the single welding angle being welded, lacks a support positioning structure for the overall strip frame, especially the other two welding angles adjacent to the current welding angle and the end of the profile, and has no effective support and fixing mechanism. Under the action of welding vibration, the adjacent welding angles and the profile are prone to loosen and shift, resulting in excessive overall size deviation of the strip frame. At the same time, the shaking of the end of the profile will further exacerbate the welding deviation of the current welding angle, reducing the product qualification rate of the warm edge strip frame. SUMMARY

[0004] In order to solve the problems existing in the prior art, an ultrasonic welding machine head and method are proposed.

[0005] The technical solution for solving the technical problems of the application is as follows: on the one hand, an ultrasonic welding machine head is proposed, which comprises: a base, a first support plate is arranged on the base, a strip frame formed by inserting four groups of profiles is placed on the first support plate, and the connection between the adjacent two profiles is a welding angle; The clamping assembly comprises an inner corner pressing plate and an outer corner pressing plate; the inner corner pressing plate is vertically and slidingly connected to a vertical plate, and the vertical plate is slidingly connected to the base; the outer corner pressing plate is slidingly connected to the base, and the inner corner pressing plate and the outer corner pressing plate can be moved towards each other to clamp one of the welding corners; The ultrasonic welding head is connected to the base, and the ultrasonic welding head faces the welding corner.

[0006] Preferably, support assemblies are further arranged on both sides of the welding corner, and each support assembly comprises a moving seat slidingly connected to the base and capable of moving along the length direction of the profile; an outer end of the moving seat is further connected to a second support plate, and one end of the profile away from the welding corner to be welded is placed on the second support plate; an outer backing plate is arranged between the first support plate and the second support plate, and the outer backing plate is connected to the moving seat, and an inner side of the outer backing plate is flush with an outer side of the lower top plate.

[0007] Preferably, a backing plate telescopic cylinder is further connected to the base, a connecting plate is connected to a telescopic section of the backing plate telescopic cylinder, a backing plate lifting cylinder is connected to an upper end of the connecting plate, and a telescopic section of the backing plate lifting cylinder is connected to an inner backing plate, so that the backing plate lifting cylinder can drive the inner backing plate to move vertically; the backing plate telescopic cylinder can drive the inner backing plate to move towards the outer backing plate.

[0008] Preferably, a stand is further connected to the moving seat, a downward pressing telescopic cylinder is connected to the stand, and a downward pressing block is connected to a telescopic end of the downward pressing telescopic cylinder, so that the downward pressing block can press the profile on the second support plate.

[0009] Preferably, a wave-shaped anti-skid pattern is formed on the outer backing plate.

[0010] Preferably, the clamping assembly further comprises a transverse moving plate slidingly connected to the base, and the transverse moving plate is driven to move by a forward telescopic cylinder; a vertical plate is connected to a front end of the transverse moving plate, a lifting telescopic cylinder is connected to a bottom of the vertical plate, a telescopic end of the lifting telescopic cylinder is connected to a pressing plate fixing plate, and the inner corner pressing plate is detachably connected to the pressing plate fixing plate.

[0011] Preferably, the device further comprises a downward pressing assembly, the downward pressing assembly comprises a sliding column and a sleeve fixedly connected to the base, the sliding column can pass through the sleeve and vertically slide along the sleeve; a transverse plate is connected to a top of the sliding column, and an upper pressing plate is connected to a bottom of the transverse plate, so that the upper pressing plate is arranged directly above the first support plate; a lower driving plate is connected to a bottom of the sliding column, a driving telescopic cylinder is connected to a bottom of the base, and a telescopic section of the driving telescopic cylinder is connected to the lower driving plate, so that the driving telescopic cylinder drives the sliding column to vertically slide.

[0012] Preferably, a stand is connected to the base, an outer corner telescopic cylinder is connected to the stand, and a telescopic end of the outer corner telescopic cylinder is connected to the outer corner pressing plate.

[0013] Preferably, the ultrasonic welding head is provided with two groups, which are arranged on both sides of the outer corner pressing plate; the ultrasonic welding head is detachably connected to the welding head fixing frame, the welding head fixing frame is arranged to slide on the first sliding rail; the bottom of the welding head fixing frame is connected with a welding head telescopic cylinder, and the telescopic end of the welding head telescopic cylinder is fixed to the base.

[0014] In another aspect, an ultrasonic welding method is provided, comprising the following steps: S1. Installing the strip frame; four groups of profiles are inserted at the head and tail to form a strip frame; S2. Arranging the profiles; one corner of the strip frame is placed on the first support plate, and the moving seat is controlled to move along the profile, so that the second support plates on both sides are located at the bottom of the adjacent welding corner; S3. Fixing the welding corner; the outer corner telescopic cylinder is started to push the outer corner pressing plate against the outer side of the welding corner; then the lifting telescopic cylinder is started to lift the inner corner pressing plate to the same height as the outer corner pressing plate, and then the forward telescopic cylinder is started to make the inner corner pressing plate tightly press against the inner side of the welding corner; finally, the driving telescopic cylinder is started to drive the upper pressing plate to press down to the top of the welding corner, so that the welding corner is fixed.

[0015] S4. Fixing the profiles; the gasket telescopic cylinder is started to move the inner gasket towards the outer gasket, so as to fix the profiles on both sides of the welding corner; S5. Fixing the adjacent welding corners; the lower pressing telescopic cylinder is started, and the lower pressing block is moved downward by the lower pressing telescopic cylinder, so that the two welding corners adjacent to the welding corner to be welded are pressed on the second support plate; S6. Welding the welding corner; after adjusting the distance between the ultrasonic welding head and the welding corner according to the need, the ultrasonic welding head is started to weld; S7. Repeating S1-S6 until the welding corners of the four corners of the strip frame are all welded.

[0016] Compared with the prior art, the above technical scheme has the following advantages or beneficial effects: 1. The present application sets up a clamping assembly composed of an inner corner pressing plate, an outer corner pressing plate and an upper pressing plate, the inner corner pressing plate and the outer corner pressing plate move oppositely to clamp the inner and outer sides of the welding corner, and the upper pressing plate vertically presses down on the top of the welding corner above the first support plate, forming a three-dimensional positioning constraint on the welding corner, ensuring uniform distribution of clamping force, avoiding displacement, misplacement and local deformation of the welding corner during welding, making the welding corner connection fit closely and reducing the risk of false welding; meanwhile, the height of the inner corner pressing plate can be adjusted by the lifting telescopic cylinder to adapt to the clamping needs of welding corners of different specifications, and the inner corner pressing plate can also be lowered before and after welding, without affecting the taking and placing of the warm edge strip frame.

[0017] 2. The present application sets up a support assembly, through the movement of the moving seat along the length direction of the profile, drives the second support plate to accurately support two weld angles adjacent to the current weld angle, and cooperates with the synergistic effect of the outer and inner backing plates to realize the lateral positioning of the profile on both sides of the weld angle, reduce the influence of ultrasonic welding vibration on the whole strip frame, prevent the adjacent weld angle and profile from loosening and displacement, ensure that the overall size precision of the strip frame meets the standard, and reduce the product rework rate and production cost; in addition, the wave-shaped anti-skid lines opened on the outer backing plate further enhance the friction between the profile and the backing plate, avoid the sliding of the profile, improve the support stability, and indirectly guarantee the welding quality.

[0018] 3. The present application sets up two groups of ultrasonic welding heads arranged on both sides of the outer corner pressing plate, which can simultaneously weld the two sides of the weld angle, shorten the single angle welding time, and improve the welding efficiency; the welding head is detachably connected to the welding head fixing frame, which is convenient for cleaning, maintenance and replacement of the welding head in the later period; at the same time, the welding head fixing frame can slide along the first slide rail, and the distance between the welding head and the weld angle can be adjusted through the welding head telescopic cylinder, which can flexibly adapt to the welding requirements of different specifications and different sizes of warm edge strip frame. BRIEF DESCRIPTION OF DRAWINGS

[0019] The drawings accompanying the specification of this application form a part of it, serve to further provide a further understanding of the application, and together with the exemplary embodiments of the application and their description, serve to explain the application, and do not constitute an improper limitation of the application.

[0020] Figure 1 is a side view of the machine head of the present application Figure 1 .

[0021] Figure 2 is Figure 1 an enlarged view of A in the figure.

[0022] Figure 3 is a side view of the machine head of the present application Figure 2 .

[0023] Figure 4 is a schematic view of the bottom structure of the machine head of the present application.

[0024] Figure 5 is a schematic view of the structure of the present application without the lower pressing assembly and the lower pressing block.

[0025] BRIEF DESCRIPTION OF DRAWINGS: 1, base; 2, first support plate; 3, strip frame; 31, profile; 32, corner weld; 4, clamping assembly; 41, inner corner pressing plate; 42, outer corner pressing plate; 43, pressing plate fixing plate; 44, vertical plate; 45, transverse moving plate; 46, lifting telescopic cylinder; 47, forward telescopic cylinder; 5, support assembly; 51, moving seat; 52, second support plate; 53, outer pad plate; 54, pad plate telescopic cylinder; 55, connecting plate; 56, pad plate lifting cylinder; 57, inner pad plate; 58, stand column; 59, pressing telescopic cylinder; 510, pressing block; 511, position adjusting telescopic cylinder; 6, pressing assembly; 61, sliding column; 62, sleeve; 63, driving telescopic cylinder; 64, lower driving plate; 65, upper pressing plate; 66, transverse plate; 7, outer corner telescopic cylinder; 8, vertical seat; 9, welding head fixing frame; 10, first sliding rail; 11, welding head telescopic cylinder; 12, ultrasonic welding head. DETAILED DESCRIPTION

[0026] In order to clearly illustrate the technical features of the present application, the present application will be described in detail below with specific embodiments, and in conjunction with the accompanying drawings. The following disclosure provides many different embodiments or examples for implementing the various structures of the present application. In order to simplify the disclosure of the present application, the components and settings of a specific example are described below. In addition, the present application can repeatedly refer to the numbers and / or letters in different examples. Such repetition is for the purpose of simplification and clarity, and in itself does not indicate the relationship between the various embodiments and / or settings being discussed. It should be noted that the components illustrated in the drawings are not necessarily drawn to scale. The present application omits the description of known components and processing techniques and processes to avoid unnecessary limitations on the present application. The terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer" and the like indicate the orientation or positional relationship shown in the drawings, and are only for the purpose of facilitating the description of the present application and simplifying the description, and therefore cannot be understood as indicating or implying that the devices or elements referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as limiting the present application. In addition, the terms "first", "second", "third" are only for the purpose of description, and cannot be understood as indicating or implying relative importance. In the description of the present application, it should be noted that unless otherwise explicitly specified and limited, the terms "mounting", "connection", "connection" should be understood broadly, for example, it can be a fixed connection, or a detachable connection, or an integral connection; it can be a mechanical connection, or an electrical connection; it can be directly connected, or indirectly connected through an intermediate medium, or it can be the internal communication of two elements. For those skilled in the art, the specific meaning of the above terms in the present application can be understood according to the specific circumstances.

[0027] Example one: Please refer to Figures 1-5The embodiment provides an ultrasonic welding head, and specifically comprises a base 1, a clamping assembly 4 and an ultrasonic welding head 12, the connection relationship and working cooperation of each component are as follows: The base 1 serves as the mounting base and bearing carrier of the whole welding head, is used for fixing and supporting various functional assemblies, guarantees the stability of the whole head structure, and provides basic guarantee for accurate implementation of subsequent welding operations. The upper surface of the base 1 is provided with an L-shaped first support plate 2, the first support plate 2 is horizontally arranged, the top surface thereof is kept smooth, and is used for placing a warm edge strip frame 3 to be welded. The warm edge strip frame 3 is formed by correspondingly inserting or simply bonding four groups of sectional materials 31, a welding corner 32 is formed at the connecting position of the two adjacent groups of sectional materials 31, one of the welding corners 32 of the warm edge strip frame 3 is placed at a preset position of the first support plate 2 during welding, so that the welding corner 32 is in a weldable state, the first support plate 2 plays a preliminary supporting role on the welding corner 32 and the surrounding sectional materials 31, avoids abrasion caused by direct contact between the sectional materials 31 and the base 1, and provides stable bottom support for the welding corner 32, thereby reducing deformation caused by uneven stress on the bottom during welding.

[0028] The clamping assembly 4 is used for realizing accurate clamping positioning of the welding corner 32 and avoiding deviation and misplacement of the welding corner 32 during welding, and specifically comprises an inner corner pressing plate 41 and an outer corner pressing plate 42. The inner corner pressing plate 41 is vertically and slidingly connected to a vertical plate 44, that is, the inner corner pressing plate 41 can move up and down along the height direction of the vertical plate 44 to realize height adjustment; in the embodiment, the sliding connection is realized by means of a sliding block and a sliding rail, so that friction is reduced; the vertical plate 44 is slidingly connected to the base 1 and can move along the horizontal direction of the base 1, thereby driving the inner corner pressing plate 41 to move horizontally synchronously and adjusting the relative position between the inner corner pressing plate 41 and the welding corner 32. The outer corner pressing plate 42 is directly slidingly connected to the base 1 and can move along the horizontal direction of the base 1, and the moving directions of the inner corner pressing plate 41 and the outer corner pressing plate 42 correspond to each other, that is, the two can move towards each other, so that clamping forces are applied to the inner side and the outer side of the welding corner 32 respectively, and the welding corner 32 is clamped and fixed.

[0029] The ultrasonic welding head 12 is connected to the base 1, and the welding end thereof faces a preset welding position of the welding corner 32. The ultrasonic welding head 12 is used for generating high-frequency vibration, transmitting vibration energy to the welding corner 32, causing plastic deformation and fusion of the contact surface of the sectional material 31 at the welding corner 32, and realizing firm welding of the adjacent sectional materials 31. The connection mode of the ultrasonic welding head 12 and the base 1 adopts detachable connection, so that the welding head can be cleaned, maintained and replaced in the later period, and equipment maintenance cost is reduced.

[0030] In this embodiment, the opposing clamping of the inner corner pressure plate 41 and the outer corner pressure plate 42 achieves bidirectional positioning constraint on both the inner and outer sides of the weld corner 32. Compared with the single-sided clamping or simple double-sided squeezing and fixing in the prior art, this effectively improves the positioning and fixing accuracy of the weld corner 32 and reduces the problem of weld corner 32 offset and misalignment caused by high-frequency vibration during the welding process. At the same time, the first support plate 2 provides initial support for the weld corner 32 and the surrounding profile 31. With the precise clamping of the clamping component 4, the weld corner 32 connection is more tightly fitted, avoiding the risk of incomplete welding and improving the welding strength and welding accuracy of the weld corner 32. The ultrasonic welding head 12 adopts a detachable connection, which is convenient for later maintenance. The overall structure is easy to process and manufacture, reducing the equipment production cost and meeting the basic requirements for mass production of the warm edge frame 3.

[0031] Example 2: Continue reading Figures 1-5 Based on Embodiment 1, the structure is further optimized by adding support component 5 to solve the problems of insufficient overall support and poor welding stability of the frame 3 in the prior art. The specific improvements are as follows: A set of support components 5 is provided on both sides of the weld corner 32, and the two sets of support components 5 are symmetrically arranged, corresponding to the profiles 31 on both sides of the weld corner 32. The support component 5 includes a movable seat 51, which is slidably connected to the base 1. Its sliding direction is consistent with the length direction of the profile 31, that is, the movable seat 51 can move along the horizontal direction of the base 1, and the moving direction is the same as the extension direction of the profile 31. The position of the movable seat 51 can be adjusted according to the length of the profile 31. The movable seat 51 is driven to move by a position adjustment telescopic cylinder 511, which is fixed on the base 1 and its telescopic end is connected to the movable seat 51. The outer end of the movable seat 51 is connected to a second support plate 52. The second support plate 52 is arranged horizontally, and its top surface is flush with the top surface of the first support plate 2. When the warm edge frame 3 is placed on the first support plate 2, the end of the profile 31 away from the current weld corner 32 is placed on the second support plate 52, and the second support plate 52 provides support for the end of the profile 31.

[0032] An outer pad 53 is provided between the first support plate 2 and the second support plate 52. The outer pad 53 is fixedly connected to the movable seat 51 and moves synchronously with the movable seat 51. The inner side of the outer pad 53 is flush with the outer side of the first support plate 2, and the outer side of the outer pad 53 is flush with the inner side of the second support plate 52, so that the first support plate 2, the outer pad 53, and the second support plate 52 form a continuous support surface, providing comprehensive support for the bottom of the profile 31. The height of the outer pad 53 is consistent with the height of the first support plate 2 and the second support plate 52, ensuring that the profile 31 remains horizontal after placement and preventing the profile 31 from tilting or shifting due to uneven support surfaces.

[0033] By adding support component 5, the overall support and positioning of the warm edge frame 3 is achieved. In particular, the movable seat 51, which can move along the length of the profile 31, drives the second support plate 52 to provide precise support to the end of the profile 31 adjacent to the current weld corner 32. This solves the problem of insufficient overall support for the frame 3 in the existing technology, which only provides simple support for a single weld corner 32. The outer pad 53, together with the first support plate 2 and the second support plate 52, forms a continuous support surface, providing comprehensive support to the bottom of the profile 31 and avoiding uneven stress caused by local suspension of the profile 31. Under the action of welding vibration, the support component 5 can effectively limit the loosening and displacement of adjacent profiles 31 and weld corners 32, reduce the overall dimensional deviation of the frame 3, and prevent the shaking of the end of the profile 31 from aggravating the welding deviation of the current weld corner 32. In addition, the movable seat 51 can be flexibly adjusted according to the length of the profile 31 to adapt to the support requirements of different specifications of warm edge frames 3, thus improving the versatility of the equipment.

[0034] Example 3: Continue reading Figures 1-3 Based on Example 2, the support and positioning structure is further optimized to improve the lateral positioning accuracy of profile 31. The specific improvements are as follows: A pad telescopic cylinder 54 is also connected to the base 1. The pad telescopic cylinder 54 is horizontally arranged, and its telescopic section faces the weld corner 32. The telescopic section of the pad telescopic cylinder 54 is connected to a connecting plate 55, which is horizontally arranged. A pad lifting cylinder 56 is connected to the upper surface of the connecting plate 55. The pad lifting cylinder 56 is vertically arranged, and its telescopic section faces upward. The telescopic section of the pad lifting cylinder 56 is connected to an inner pad 57, which is horizontally arranged. The pad lifting cylinder 56 can drive the inner pad 57 to move vertically. The pad telescopic cylinder 54 can drive the inner pad 57 to move toward the outer pad 53, thereby realizing the clamping and limiting of the profile 31 from both the inner and outer sides. By adding a pad telescopic cylinder 54, a pad lifting cylinder 56, and an inner pad 57, which cooperate with the outer pad 53 in Embodiment 2, the lateral precise positioning of the profile 31 is achieved, further improving the positioning constraint structure of the frame 3 and solving the problem of the profile 31 having no effective lateral positioning and being prone to lateral displacement in the prior art. The pad lifting cylinder 56 can adjust the height of the inner pad 57 to adapt to profiles 31 of different height specifications, and the pad telescopic cylinder 54 can adjust the distance between the inner pad 57 and the outer pad 53 to adapt to profiles 31 of different width specifications, thus improving the versatility of the equipment.

[0035] In addition, a wavy anti-slip pattern can be formed on the upper surface of the outer pad 53. The wavy anti-slip pattern extends along the length of the profile 31, that is, the extension direction of the anti-slip pattern is consistent with the movement direction of the profile 31, and the wavy anti-slip pattern is evenly distributed on the entire upper surface of the outer pad 53. The peaks and troughs of the anti-slip pattern are smoothly transitioned to avoid sharp protrusions causing wear to the surface of the profile 31, while ensuring that the anti-slip pattern can fit tightly against the bottom of the profile 31, increasing the friction between the two.

[0036] Example 4: Continue reading Figures 1-5 This embodiment is a preferred solution of Embodiment 2. Based on Embodiment 2, the support component 5 is further optimized by adding a downward pressing and fixing structure at the end of the profile 31 to improve the support stability at the end of the profile 31. The specific improvements are as follows: A column 58 is also connected to the movable base 51. The column 58 is arranged vertically, and a downward-pressing telescopic cylinder 59 is connected to the top of the column 58. The downward-pressing telescopic cylinder 59 is arranged vertically with its telescopic section facing downward. A downward-pressing block 510 is connected to the telescopic end of the downward-pressing telescopic cylinder 59. The downward-pressing block 510 is located directly above the second support plate 52, and the bottom surface of the downward-pressing block 510 is parallel to the top surface of the second support plate 52. When the telescopic section of the downward-pressing telescopic cylinder 59 extends, it can drive the downward-pressing block 510 to move vertically downward, pressing and fixing the end of the profile 31 placed on the second support plate 52. When the telescopic section of the downward-pressing telescopic cylinder 59 retracts, the downward-pressing block 510 moves upward, releasing the pressure on the end of the profile 31, making it easier to pick up and place the frame 3. By adding a column 58, a downward pressing telescopic cylinder 59, and a downward pressing block 510, the end of the profile 31 and the adjacent weld corner 32 are pressed and fixed, further improving the overall positioning structure of the frame 3.

[0037] The bottom surface of the pressure block 510 is provided with a flexible pad. The flexible pad is made of a high-temperature resistant and wear-resistant flexible material, which can increase the friction between the pressure block 510 and the end of the profile 31, improve the pressing and fixing effect, and prevent the pressure block 510 from causing wear on the surface of the profile 31, thus protecting the appearance quality of the profile 31.

[0038] Example 5: Continue reading Figures 1-5 This embodiment is an optimized version of Embodiment 1. Based on Embodiment 1, the clamping component 4 is optimized to improve clamping accuracy and ease of operation. The specific improvements are as follows: For the inner corner pressure plate 41, the clamping assembly 4 also includes a transverse plate 45, which is slidably connected to the base 1 and can move horizontally along the base 1. The moving direction of the transverse plate 45 is consistent with the clamping direction of the weld corner 32. The transverse plate 45 is driven to move by a forward telescopic cylinder 47, which is horizontally connected to the base 1. Its telescopic section is fixedly connected to the transverse plate 45. Through the telescopic movement of the forward telescopic cylinder 47, the transverse plate 45 is moved, thereby adjusting the distance between the transverse plate 45 and the weld corner 32, and realizing the clamping and limiting of the weld corner 32.

[0039] A vertical plate 44 is fixedly connected to the front end of the horizontal sliding plate 45. The vertical plate 44 is arranged perpendicularly to the horizontal sliding plate 45. A lifting telescopic cylinder 46 is connected to the bottom of the vertical plate 44. The lifting telescopic cylinder 46 is arranged vertically with its telescopic section facing upward. A pressure plate fixing plate 43 is connected to the telescopic end of the lifting telescopic cylinder 46. The pressure plate fixing plate 43 is arranged horizontally. The inner corner pressure plate 41 is detachably connected to the pressure plate fixing plate 43. Specifically, it can be connected by bolts or clips to facilitate the disassembly, replacement and maintenance of the inner corner pressure plate 41.

[0040] For the outer corner pressure plate 42, a stand 8 is connected to the base 1, and an outer corner telescopic cylinder 7 is connected to the stand 8. The telescopic end of the outer corner telescopic cylinder 7 is connected to the outer corner pressure plate 42, so as to realize the forward and backward movement of the outer corner pressure plate 42.

[0041] By adding a transverse sliding plate 45 and a forward telescopic cylinder 47, the horizontal position of the inner corner pressure plate 41 is precisely adjusted. Compared with manual adjustment, the driving method of the forward telescopic cylinder 47 is more precise and stable, and can effectively control the distance between the inner corner pressure plate 41 and the weld corner 32, improving the clamping positioning accuracy. The lifting telescopic cylinder 46 enables precise adjustment of the height of the inner corner pressure plate 41, which can adapt to weld corners 32 of different heights. It can also lower the inner corner pressure plate 41 when placing the frame 3, so that it can be placed on the first support plate 2 without lifting the frame 3, making it convenient to place materials and change weld corners 32. The inner corner pressure plate 41 can be detachably connected to the pressure plate fixing plate 43, which makes it easy to replace the corresponding inner corner pressure plate 41 according to different specifications of weld corners 32. At the same time, it is easy to clean and maintain the inner corner pressure plate 41 later, reducing equipment maintenance costs. The entire clamping assembly 4 is driven by a telescopic cylinder, which is convenient to operate.

[0042] Example 7: Continue reading Figures 1-5 This embodiment is a preferred solution of Embodiment 1. Based on Embodiment 1, a pressing component 6 is added to achieve positioning constraint on the top of weld corner 32, further improving the positioning accuracy of weld corner 32. The specific improvements are as follows: The pressing component 6 includes a sliding column 61. Corresponding to the position of the sliding column 61, a sleeve 62 is fixedly connected to the base 1. The sleeve 62 is arranged vertically, allowing the sliding column 61 to pass through the sleeve 62 and slide up and down along the vertical direction of the sleeve 62. The sleeve 62 guides and supports the sliding column 61, ensuring accurate movement of the sliding column 61 and preventing it from deviating. A horizontal plate 66 is fixedly connected to the top of the sliding column 61. The horizontal plate 66 is arranged horizontally, and an upper pressure plate 65 is connected to the bottom of the horizontal plate 66. The upper pressure plate 65 is arranged horizontally and positioned directly above the first support plate 2. The bottom surface of the upper pressure plate 65 is parallel to the top surface of the first support plate 2, ensuring that the upper pressure plate 65 can apply downward pressure evenly.

[0043] A lower drive plate 64 is connected to the bottom of the sliding column 61. The lower drive plate 64 is horizontally arranged. Corresponding to the position of the lower drive plate 64, a drive telescopic cylinder 63 is connected to the bottom of the base 1. The drive telescopic cylinder 63 is vertically arranged with its telescopic section facing upward. The telescopic section of the drive telescopic cylinder 63 is fixedly connected to the lower drive plate 64. Through the telescopic movement of the drive telescopic cylinder 63, the lower drive plate 64, the sliding column 61, the horizontal plate 66, and the upper pressure plate 65 move up and down synchronously, realizing the pressing and releasing of the upper pressure plate 65 on the top of the weld corner 32.

[0044] Example 8: This embodiment is a preferred solution of Embodiment 1. Based on Embodiment 1, the ultrasonic welding head 12 is optimized to improve welding efficiency and adaptability. The specific improvements are as follows: Two sets of ultrasonic welding heads 12 are provided. The two sets of ultrasonic welding heads 12 are symmetrically arranged on both sides of the outer corner pressure plate 42, and the welding ends of the two sets of ultrasonic welding heads 12 are facing the preset welding position of the weld corner 32. The two sets of ultrasonic welding heads 12 can work synchronously and weld the two sides of the weld corner 32 at the same time, shortening the welding time of a single corner.

[0045] Both sets of ultrasonic welding heads 12 are detachably connected to the welding head fixing frame 9, specifically by bolt connection, which facilitates cleaning, maintenance and replacement of the welding heads. The welding head fixing frame 9 is slidably connected to the first slide rail 10 of the base 1. The first slide rail 10 is arranged horizontally, and its extension direction is consistent with the welding direction of the weld corner 32. The welding head fixing frame 9 can slide along the first slide rail 10, thereby driving the two sets of ultrasonic welding heads 12 to move synchronously and adjust the horizontal distance between the welding head and the weld corner 32.

[0046] The bottom of the welding head fixing frame 9 is connected to the welding head telescopic cylinder 11. The welding head telescopic cylinder 11 is arranged horizontally, and its telescopic section is fixedly connected to the welding head fixing frame 9. The other end of the welding head telescopic cylinder 11 is fixed on the base 1. Through the telescopic movement of the welding head telescopic cylinder 11, the welding head fixing frame 9 is driven to slide along the first slide rail 10, so as to realize the precise adjustment of the distance between the ultrasonic welding head 12 and the welding angle 32.

[0047] Example 9: This embodiment, based on the above embodiments, proposes an ultrasonic welding fixing method, including the following steps: S1. Installation of frame 3: Connect the four sets of profiles 31 end to end to form frame 3; S2. Placement of profile 31; Place one corner of the frame 3 on the first support plate 2, and control the moving seat 51 to move along the profile 31 so that the second support plates 52 on both sides are located at the bottom of the adjacent weld corner 32; S3. Fix the weld corner 32; activate the outer corner telescopic cylinder 7 to push the outer corner pressure plate 42 against the outer side of the weld corner 32; then activate the lifting telescopic cylinder 46 to raise the inner corner pressure plate 41 to the same height as the outer corner pressure plate 42, then activate the forward telescopic cylinder 47 to make the inner corner pressure plate 41 press against the inner side of the weld corner 32; finally activate the drive telescopic cylinder 63 to drive the upper pressure plate 65 to press down to the top of the weld corner 32, thus fixing the weld corner 32.

[0048] S4. Fix the profile 31; activate the pad telescopic cylinder 54 to move the inner pad 57 toward the outer pad 53, thereby fixing the profile 31 on both sides of the weld corner 32; S5. Adjacent weld corners 32 are fixed; the downward telescopic cylinder 59 is activated, and the downward telescopic cylinder 59 drives the downward pressing block 510 to move down, pressing the two weld corners 32 adjacent to the weld corner 32 to be welded onto the second support plate 52; S6. Welding of weld corner 32; After adjusting the distance between the ultrasonic welding head 12 and weld corner 32 by starting the welding head telescopic cylinder 11 as needed, start the ultrasonic welding head 12 to perform welding; S7. Repeat S1-S6 until all four corners of frame 3 are welded.

[0049] Although the specific embodiments of the invention have been described above in conjunction with the accompanying drawings, this is not intended to limit the scope of protection of the invention. Based on the technical solutions of the invention, various modifications or variations that can be made by those skilled in the art without creative effort are still within the scope of protection of the invention.

Claims

1. An ultrasonic welding head, characterized in that, include: Base (1); a first support plate (2) is provided on the base (1), and a frame (3) formed by four sets of profiles (31) is placed on the first support plate (2), and the connection between two adjacent profiles (31) is a weld (32); Clamping assembly (4); Clamping assembly (4) includes an inner corner pressure plate (41) and an outer corner pressure plate (42); The inner corner pressure plate (41) is vertically slidably connected to a vertical plate (44), and the vertical plate (44) is slidably connected to a base (1); The outer corner pressure plate (42) is slidably connected to the base (1), and the inner corner pressure plate (41) and the outer corner pressure plate (42) can move in opposite directions to clamp one of the weld corners (32). Ultrasonic welding head (12); the ultrasonic welding head (12) is connected to the base (1) and the ultrasonic welding head (12) faces the weld corner (32).

2. The ultrasonic welding head according to claim 1, characterized in that: Support components (5) are provided on both sides of the weld corner (32). The support components (5) include a movable seat (51) that is slidably connected to the base (1). The movable seat (51) can move along the length of the profile (31). The outer end of the movable seat (51) is also connected to a second support plate (52). The end of the profile (31) away from the weld corner (32) to be welded is placed on the second support plate (52). An outer pad (53) is provided between the first support plate (2) and the second support plate (52). The outer pad (53) is connected to the movable seat (51). The inner side of the outer pad (53) is flush with the outer side of the lower top plate.

3. The ultrasonic welding head according to claim 2, characterized in that: The base (1) is also connected to a pad telescopic cylinder (54). The telescopic section of the pad telescopic cylinder (54) is connected to a connecting plate (55). The connecting plate (55) is connected to a pad lifting cylinder (56). The telescopic section of the pad lifting cylinder (56) is connected to an inner pad (57). The pad lifting cylinder (56) can drive the inner pad (57) to move vertically. The pad telescopic cylinder (54) can drive the inner pad (57) to move toward the outer pad (53).

4. An ultrasonic welding head according to claim 2, characterized in that: The movable seat (51) is also connected to a column (58), and a pressing telescopic cylinder (59) is connected to the column (58). The telescopic end of the pressing telescopic cylinder (59) is connected to a pressing block (510), which can press the profile (31) onto the second support plate (52).

5. An ultrasonic welding head according to claims 2-4, characterized in that: A wavy anti-slip pattern is provided on the outer pad (53).

6. An ultrasonic welding head according to claim 1, characterized in that: The clamping assembly (4) also includes a transverse plate (45) slidably connected to the base (1), the transverse plate (45) being driven to move by a forward telescopic cylinder (47); the front end of the transverse plate (45) is connected to a vertical plate (44), the bottom of the vertical plate (44) is connected to a lifting telescopic cylinder (46), the telescopic end of the lifting telescopic cylinder (46) is connected to a pressure plate fixing plate (43), and the inner corner pressure plate (41) is detachably connected to the pressure plate fixing plate (43).

7. An ultrasonic welding head according to claim 1, characterized in that: It also includes a pressing component (6), which includes a sliding column (61) and a sleeve (62) fixedly connected to the base (1). The sliding column (61) can pass through the sleeve (62) and slide vertically along the sleeve (62). The top of the sliding column (61) is connected to a horizontal plate (66), and the bottom of the horizontal plate (66) is connected to an upper pressure plate (65). The upper pressure plate (65) is located directly above the first support plate (2). The bottom of the sliding column (61) is connected to the lower drive plate (64), and the bottom of the corresponding base (1) is connected to the drive telescopic cylinder (63). The telescopic section of the drive telescopic cylinder (63) is connected to the lower drive plate (64), thereby driving the sliding column (61) to slide vertically.

8. An ultrasonic welding head according to claim 1, characterized in that: A base (1) is connected to a stand (8), and an outer corner telescopic cylinder (7) is connected to the stand (8). The telescopic end of the outer corner telescopic cylinder (7) is connected to an outer corner pressure plate (42).

9. An ultrasonic welding head according to claim 8, characterized in that: Two sets of ultrasonic welding heads (12) are provided, respectively set on both sides of the outer corner pressure plate (42); the ultrasonic welding head (12) is detachably connected to the welding head fixing frame (9), the welding head fixing frame (9) is set to slide on the first slide rail (10); the bottom of the welding head fixing frame (9) is connected to the welding head telescopic cylinder (11), and the telescopic end of the welding head telescopic cylinder (11) is fixed on the base (1).

10. A method for fixing by ultrasonic welding according to any one of claims 1-9, characterized in that, Includes the following steps: S1. Installation of frame (3): Connect the four sets of profiles (31) end to end to form frame (3); S2. Placement of profile (31); Place one corner of the frame (3) on the first support plate (2), and control the moving seat (51) to move along the profile (31) so that the second support plates (52) on both sides are located at the bottom of the adjacent weld corner (32); S3. Fix the weld corner (32); start the outer corner telescopic cylinder (7) to push the outer corner pressure plate (42) against the outside of the weld corner (32); then start the lifting telescopic cylinder (46) to raise the inner corner pressure plate (41) to the same height as the outer corner pressure plate (42), then start the forward telescopic cylinder (47) to make the inner corner pressure plate (41) press against the inside of the weld corner (32); finally start the drive telescopic cylinder (63) to drive the upper pressure plate (65) to press down to the top of the weld corner (32) to fix the weld corner (32). 11.S4. Profile (31) fixed; activate the pad telescopic cylinder (54) to move the inner pad (57) toward the outer pad (53), thereby fixing the profile (31) on both sides of the weld corner (32). S5. Fix adjacent weld corners (32); start the downward telescopic cylinder (59), the downward telescopic cylinder (59) drives the downward block (510) to move down, pressing the two weld corners (32) adjacent to the weld corner (32) to be welded onto the second support plate (52); S6. Welding of weld corner (32); After adjusting the distance between the ultrasonic welding head (12) and the weld corner (32) by starting the welding head telescopic cylinder (11) as needed, start the ultrasonic welding head (12) to perform welding; S7. Repeat S1-S6 until all four corners (32) of the frame (3) are welded.

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