Ultrasonic welding device quick-release welding head
Patent Information
- Application Number
- CN202522616267.X
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-12-10
- Publication Date
- 2026-10-27
- Estimated Expiration
- 2035-12-10
AI Technical Summary
[0003]上述现有技术方案存在以下缺陷：现有的技术方案中大多数是采用通过两个螺栓直接将一个圆柱体安装在超声波焊接机的机头上的结构，因为配合公差和焊接件结构异形的原因导致其圆柱体会发生微小的旋转等，这种方式使得圆柱体在实际参与焊接的过程中会发生偏移，导致部分区域虚焊，如果采用其余结构有过于复杂，不利于快速的有效的将圆柱体安装在机头的底部
1.通过螺栓和止转螺母的配合即可将圆柱体锁紧在圆盘的底部，在使用的时候现将圆柱体放入至圆盘的底部，然后随便锁入几个螺栓，螺栓不完全紧固，当圆柱体的顶部刚与圆盘的底部接触或者还有一点间隙的时候停止对螺栓的紧固，将定位销从上至下的插入定位孔内，然后继续紧固螺栓，使得圆柱体完全安装在圆盘的底部，圆柱体的底部设置有避让槽，圆柱体的底部去除避让槽后的区域向正下方投影的面积就是待焊接的工件的焊接面积，圆柱体的底部用于和凹模板的顶部相互配合完成对塑料工件的焊接，凹模板的凹陷区域用于避让工件的其余结构。
Smart Images
Figure CN224898119U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of ultrasonic welding technology, and in particular to a quick-release welding head for ultrasonic welding devices. Background Technology
[0002] In the field of ultrasonic welding technology today, welding operations are typically performed using a standard ultrasonic welding unit. This welding unit includes a transducer, an amplitude modulator, and a welding head. When performing large-scale welding on devices such as water filters and pumps, multiple welding heads are needed to simultaneously complete welding operations at different locations. However, in the medical device industry, especially in the ultrasonic welding of hemoperfusion devices, it is necessary to ensure overall sealing, so a one-time welding is required. The conventional technique for welding end caps to both ends of the perfusion device's cylinder involves directly pressing the bottom of a cylinder against the periphery of the end cap, then activating the ultrasonic transducer to complete the welding of the end cap to the cylinder.
[0003] The existing technical solutions have the following drawbacks: Most of the existing technical solutions use a structure in which a cylinder is directly mounted on the head of an ultrasonic welding machine with two bolts. Due to the fit tolerance and the irregular shape of the welded parts, the cylinder may rotate slightly. This method causes the cylinder to shift during the actual welding process, resulting in some areas of incomplete welding. If other structures are used, they are too complicated and not conducive to quickly and effectively mounting the cylinder on the bottom of the machine head. Utility Model Content
[0004] The purpose of this invention is to provide a quick-release welding head for an ultrasonic welding device to solve the problems existing in the prior art.
[0005] The above-mentioned technical objective of this utility model is achieved through the following technical solution: A quick-release welding head for an ultrasonic welding device includes an ultrasonic welding machine and a welding head fixedly mounted on the head of the ultrasonic welding machine. The welding head includes a disc and a cylinder. The disc is fixedly mounted on the bottom of the head of the ultrasonic welding machine. The bottom periphery of the cylinder is provided with an annular portion integrally formed with the cylinder. The top of the annular portion is axially and evenly provided with a plurality of through holes. The cylinder is located at the bottom of the disc. The top of the holes penetrates the disc upwards. The bottom of the disc is provided with a downwardly protruding positioning ring. The top of the cylinder is provided with a positioning groove corresponding to the positioning ring. The top of the disc is provided with a through positioning hole extending downwards to the top of the cylinder, and the bottom of the positioning hole does not penetrate the cylinder. A positioning pin is inserted into the positioning hole. The ultrasonic welding machine has a removable recessed template mounted on the top of its worktable.
[0006] By adopting the above technical solution, the cylinder can be locked to the bottom of the disc using bolts and anti-rotation nuts. In use, first place the cylinder to the bottom of the disc, then randomly tighten a few bolts, not completely. Stop tightening the bolts when the top of the cylinder just touches the bottom of the disc or there is still a slight gap. Insert the locating pin from top to bottom into the locating hole, and then continue tightening the bolts until the cylinder is completely installed on the bottom of the disc. The bottom of the cylinder has a clearance groove. The area projected directly downwards from the bottom of the cylinder after removing the clearance groove is the welding area of the workpiece to be welded. The bottom of the cylinder is used to cooperate with the top of the concave template to complete the welding of the plastic workpiece. The recessed area of the concave template is used to avoid other structures of the workpiece.
[0007] In a further embodiment, the bottom periphery of the concave template is provided with an extension edge, the top of the extension edge is provided with a plurality of waist-shaped holes running vertically through it, and the top of the extension edge is provided with anti-slip texture.
[0008] By adopting the above technical solution, the concave template is placed on the top of the worktable of the ultrasonic welding machine, and then the cylinder is moved down so that the bottom of the cylinder fits with the top of the concave template. Then, the concave template is locked to the top of the worktable with bolts. In this way, the cylinder and the concave template are aligned, reducing the difficulty of installing and positioning the concave template.
[0009] In a further embodiment, a clearance groove is provided in the middle area of the bottom of the cylinder, and an annular protrusion is provided on the top of the concave template corresponding to the area outside the clearance groove at the bottom of the cylinder.
[0010] By adopting the above technical solution, the annular protrusion is used to cooperate with the bottom of the cylinder to press the position to be welded and complete the overall welding.
[0011] In a further embodiment, the top of the locating pin is provided with a shaft hole, which is a threaded hole.
[0012] By adopting the above technical solution, it is easy to pull out the positioning pin using a screw.
[0013] In a further embodiment, the bottom end of the cylinder is provided with a rounded acute-angle structure.
[0014] By adopting the above technical solution, we can avoid sharp angles from piercing the weld layer during welding.
[0015] In summary, this utility model has the following beneficial effects: 1. The cylinder can be locked to the bottom of the disc by using bolts and anti-rotation nuts. In use, first place the cylinder to the bottom of the disc, then tighten a few bolts arbitrarily. The bolts are not fully tightened. When the top of the cylinder just touches the bottom of the disc or there is still a small gap, stop tightening the bolts. Insert the locating pin from top to bottom into the locating hole, and then continue to tighten the bolts so that the cylinder is completely installed on the bottom of the disc. The bottom of the cylinder is provided with a clearance groove. The area of the bottom of the cylinder after removing the clearance groove and projecting directly downwards is the welding area of the workpiece to be welded. The bottom of the cylinder is used to cooperate with the top of the concave template to complete the welding of the plastic workpiece. The concave area of the concave template is used to avoid the rest of the workpiece structure. Attached Figure Description
[0016] Figure 1 This is a schematic diagram of the overall structure of this utility model; Figure 2 This is a schematic diagram illustrating the installation structure of the cylinder and the disk in this utility model.
[0017] In the diagram, 1 is a disk; 2 is a cylinder; 3 is a locating ring; and 4 is a locating pin. Detailed Implementation
[0018] The present invention will be further described in detail below with reference to the accompanying drawings.
[0019] Identical parts are indicated by the same reference numerals. It should be noted that the terms "front," "rear," "left," "right," "upper," and "lower" used in the following description refer to the attached figures. Figure 1 In this specification, the terms "bottom surface" and "top surface," "inner" and "outer" refer to the direction toward or away from the geometry of a specific component. Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of this specification, "a plurality of" means two or more, unless otherwise explicitly and specifically defined by the direction of the center.
[0020] Example 1: like Figures 1-2As shown, a quick-release welding head for an ultrasonic welding device includes an ultrasonic welding machine and a welding head fixedly installed on the head of the ultrasonic welding machine. The welding head includes a disc 1 and a cylinder 2. The disc 1 is fixedly installed at the bottom of the head of the ultrasonic welding machine. The bottom periphery of the cylinder 2 is provided with an annular portion integrally formed with the cylinder 2. The top of the annular portion is axially and evenly provided with a plurality of through holes. The cylinder 2 is located at the bottom of the disc 1. The top of the holes penetrates the disc 1 upwards. The bottom of the disc 1 is provided with a downwardly protruding positioning ring 3. The top of the cylinder 2 is provided with a positioning groove corresponding to the positioning ring 3. The top of the disc 1 is provided with a through positioning hole extending downwards to the top of the cylinder 2. The bottom of the positioning hole does not penetrate the cylinder 2. A positioning pin 4 is inserted into the positioning hole. The ultrasonic welding machine's worktable has a detachable concave template mounted on its top. The bottom perimeter of the concave template has an extension edge with multiple through-holes at the top, and the top of the extension edge has anti-slip texture. The concave template is placed on top of the ultrasonic welding machine's worktable, and then the cylinder is lowered so that its bottom aligns with the top of the concave template. The concave template is then secured to the top of the worktable with bolts. This method ensures the cylinder and concave template are aligned, reducing the difficulty of installing and positioning the concave template. A clearance groove is provided in the middle area of the bottom of the cylinder 2, and an annular protrusion corresponding to the area outside the clearance groove on the bottom of the cylinder 2 is provided on the top of the concave template. This annular protrusion cooperates with the bottom of the cylinder to press and hold the area to be welded, completing the overall welding. The top of the positioning pin 4 has a threaded shaft hole. The bottom end of the cylinder 2 has a rounded, acute-angled structure.
[0021] Specific implementation process: The cylinder can be locked to the bottom of the disc by the cooperation of bolts and anti-rotation nuts. When using it, first put the cylinder into the bottom of the disc, and then tighten a few bolts randomly. The bolts are not completely tightened. When the top of the cylinder just touches the bottom of the disc or there is still a small gap, stop tightening the bolts. Insert the positioning pin into the positioning hole from top to bottom, and then continue to tighten the bolts so that the cylinder is completely installed on the bottom of the disc. The bottom of the cylinder is provided with a relief groove. The area of the bottom of the cylinder after removing the relief groove and projecting directly downwards is the welding area of the workpiece to be welded. The bottom of the cylinder is used to cooperate with the top of the concave template to complete the welding of the plastic workpiece. The concave area of the concave template is used to avoid the rest of the workpiece structure.
[0022] In the embodiments disclosed in this utility model, the terms "installation," "connection," "linking," and "fixing" should be interpreted broadly. For example, "connection" can be a fixed connection, a detachable connection, or an integral connection; "linking" can be a direct connection or an indirect connection through an intermediate medium. Those skilled in the art can understand the specific meaning of the above terms in the embodiments disclosed in this utility model according to the specific circumstances.
[0023] This specific embodiment is merely an explanation of the present utility model and is not intended to limit the present utility model. After reading this specification, those skilled in the art can make modifications to this embodiment without contributing any inventive step, but as long as they are within the scope of the claims of the present utility model, they are protected by patent law.
Claims
1. A quick-release welding head for an ultrasonic welding device, comprising an ultrasonic welding machine and a welding head fixedly mounted on the head of the ultrasonic welding machine, characterized in that: The welding head includes a disc (1) and a cylinder (2). The disc (1) is fixedly installed at the bottom of the head of the ultrasonic welding machine. The bottom periphery of the cylinder (2) is provided with an annular part integrally formed with the cylinder (2). The top of the annular part is axially and evenly provided with a plurality of through holes. The cylinder (2) is located at the bottom of the disc (1). The top of the holes penetrates the disc (1) upwards. The bottom of the disc (1) is provided with a downward protruding positioning ring (3). The top of the cylinder (2) is provided with a positioning groove corresponding to the positioning ring (3). The top of the disc (1) is provided with a through positioning hole. The positioning hole extends downwards to the top of the cylinder (2), and the bottom of the positioning hole does not penetrate the cylinder (2). A positioning pin (4) is inserted into the positioning hole. The ultrasonic welding machine has a removable recessed template mounted on the top of its worktable.
2. The quick-release welding head of the ultrasonic welding device according to claim 1, characterized in that: The bottom periphery of the concave template is provided with an extension edge, the top of the extension edge is provided with multiple waist-shaped holes running vertically through it, and the top of the extension edge is provided with anti-slip texture.
3. The quick-release welding head of the ultrasonic welding device according to claim 1, characterized in that: The bottom middle area of the cylinder (2) is provided with a clearance groove, and the top of the concave template is provided with an annular protrusion corresponding to the area outside the bottom clearance groove of the cylinder (2).
4. The quick-release welding head of the ultrasonic welding device according to claim 1, characterized in that: The top of the positioning pin (4) is provided with a shaft hole, which is a threaded hole.
5. The quick-release welding head of the ultrasonic welding device according to claim 1, characterized in that: The bottom end of the cylinder (2) is provided with an acute-angled rounded structure.