Ultrasonic welding machine

Abstract

The utility model relates to the technical field of ultrasonic welding, in particular to an ultrasonic welding machine which comprises a bottom plate and a rack, and a clamp is arranged on the bottom plate. The side end of the rack is provided with the welder mechanism, the upper end of the rack is provided with the cylinder, and the welder mechanism is connected with the output end of the cylinder; the rack is matched with the bottom plate to form a C-shaped structure, an up-down guide mechanism is arranged at the inner side end of the rack, and a gas circuit mechanism is arranged at the outer side end of the rack; the vertical guide mechanism comprises a guide rail, a sliding block, a mounting seat and an L-shaped frame; the gas circuit mechanism comprises a gas tank and a vortex tube; the machine frame is arranged to be of the C-shaped structure, the space below the welding head can be released, and the up-down guide mechanism and the air path mechanism can be assembled and used conveniently; the arrangement of the up-down guide mechanism can ensure the linearity of the welding head moving downwards for welding operation, and the arrangement of the gas path mechanism can provide a gas source for the use of the cylinder and output cold air to cool the welding head, so that the welding precision and quality of the weldment are improved.

Description

Technical Field

[0001] The utility model relates to the technical field of ultrasonic welding, in particular to an ultrasonic welder. Background Art

[0002] An ultrasonic welder can weld two different materials together by ultrasonic welding.

[0003] The publicly disclosed Chinese patent with the publication number CN210126289U discloses a new type of ultrasonic plastic welder, which includes a workbench, support columns and a protective shell. The workbench includes two groups of slide rails, two groups of sliding plates and two groups of fixing screws. Two groups of slide rails are arranged at the middle position of the workbench surface. Two groups of sliding plates are arranged between the two groups of slide rails. Convex strips are respectively arranged at the bottom ends of the two groups of sliding plates. A support column is arranged at the left side of the workbench surface, and a protective shell is arranged at the top end of the support column. The protective shell includes a straight-bar type cylinder, a plastic vibration block and a pressure injection machine table. A straight-bar type cylinder is arranged at the top end inside the protective shell, and the straight-bar type air rod on the straight-bar type cylinder is connected to the pressure injection machine table. The pressure injection rod on the pressure injection machine table is connected to the plastic vibration block.

[0004] The ultrasonic welder disclosed in the above patent has the following problems:

[0005] 1. The welder only uses a cylinder to drive up and down. During the movement, the welding head is prone to tilt under the influence of lateral force, affecting the welding effect.

[0006] 2. After long-term use, the welding head will heat up, generate stress and deform, affecting the welding precision and quality of the welded parts. Summary of the Utility Model

[0007] In view of the above-mentioned disadvantages of the prior art, the purpose of the present utility model is to provide an ultrasonic welder, which is used to solve the problems that the welding head is prone to tilt under the influence of lateral force during the up and down movement of the welder adopted in the prior art, and the welding head will heat up, generate stress and deform after long-term use.

[0008] To achieve the above purpose and other related purposes, the present utility model provides an ultrasonic welder, which includes a bottom plate and a frame. A fixture is arranged on the bottom plate, and the welded part is placed on the bottom plate and fixed by the fixture. A welder mechanism is installed at the side end of the frame, and a cylinder is installed at the upper end. The welder mechanism is connected to the output end of the cylinder, and the welder mechanism is driven by the cylinder to move up and down to weld the welded part.

[0009] The frame and the bottom plate form a C-shaped structure. An up and down guiding mechanism is arranged at the inner side end of the frame. The up and down guiding mechanism includes:

[0010] Two parallel and cooperating guide rails, and sliders are slidably fitted on both of the two guide rails.

[0011] Mounting base, the mounting base is connected to two sliders simultaneously;

[0012] An L-shaped frame is provided on the mounting base, a connecting rod is provided at the lower end of the L-shaped frame, and the welding machine mechanism is installed on the connecting rod;

[0013] An air circuit mechanism is provided at the outer end of the frame, and the air circuit mechanism includes:

[0014] Air tank, the air tank is connected to the cylinder through a pipeline;

[0015] Vortex tube, the vortex tube is installed on the mounting base; the input end of the vortex tube is connected to the air tank through a pipeline, and the output end is connected to the welding machine mechanism through a pipeline.

[0016] In an embodiment of the present invention, the welding machine mechanism includes a transducer, an amplitude modulator connected to the transducer, and a welding head connected to the amplitude modulator. The amplitude modulator is installed on the L-shaped frame, and the welding head is installed on the output end of the cylinder.

[0017] In an embodiment of the present invention, a pressure sensor is installed above the welding head for real-time monitoring of the welding pressure.

[0018] In an embodiment of the present invention, a magnetic grating encoder is provided on the inner end of the frame, and the magnetic grating encoder is distributed between two parallel and cooperating guide rails;

[0019] A magnetic strip is provided on the mounting base, and the magnetic strip is electrically cooperated with the magnetic grating encoder.

[0020] In an embodiment of the present invention, a limiting block is provided at one side end of the mounting base, and a limiting pile is provided on the frame. The limiting pile is correspondingly located directly below the limiting block for limiting the downward movement range of the cylinder driving the mounting base.

[0021] In an embodiment of the present invention, a fixing frame is provided at the upper end of the frame, a tension spring is installed on the fixing frame, and the lower end of the tension spring is connected to the L-shaped frame.

[0022] In an embodiment of the present invention, protective housing shells are provided at both the outer end and the upper end of the frame.

[0023] As described above, the ultrasonic welding machine of the present invention has the following beneficial effects:

[0024] 1. By providing the up-and-down guiding mechanism, the up-and-down guiding mechanism adopts the cooperation of guide rails and sliders to guide the downward movement of the welding machine mechanism, ensuring the straightness of the downward movement of the welding head for welding operations and improving the welding effect;

[0025] 2. By setting up the air circuit mechanism, the air circuit mechanism can supply air to the cylinder to meet the usage requirements of the cylinder. At the same time, the air tank used in conjunction with the vortex tube can output cold air to the position of the welding head during and after the welding operation for cooling, effectively reducing welding deformation and stress, thereby improving the welding accuracy and quality of the welded parts.

[0026] 3. By setting up the pressure sensor and the cooperating magnetic grating encoder and magnetic strip, the pressure sensor can monitor the welding pressure when the welding head contacts the welding in real time. The magnetic grating encoder and the magnetic strip are arranged in cooperation to accurately detect the descending position of the welding head, which is conducive to timely adjusting the output of the cylinder to keep the welding head in an appropriate pressure state, avoiding problems such as excessive welding pressure damaging the welding and insufficient welding pressure resulting in poor welding, and further improving the welding effect.

[0027] 4. The present utility model forms a C-shaped structure by combining the frame with the bottom plate, which can release the space below the welding head, facilitating the assembly and use of the upper and lower guiding mechanisms and the air circuit mechanism; the setting of the upper and lower guiding mechanisms can ensure the straightness of the downward movement of the welding head for welding operations, and the setting of the air circuit mechanism can provide a gas source for the use of the cylinder and output cold air to cool the welding head at the same time, improving the welding accuracy and quality of the welded parts; the combined use of the pressure sensor, magnetic grating encoder and magnetic strip can monitor the welding pressure and descending position of the welding head in real time, effectively improving the welding effect. BRIEF DESCRIPTION OF THE DRAWINGS

[0028] Figure 1 It shows a three-dimensional structural schematic diagram of the present utility model.

[0029] Figure 2 It shows Figure 1 a structural schematic diagram with the protective cover removed.

[0030] Figure 3 It shows Figure 2 a structural schematic diagram from another perspective.

[0031] Figure 4 It shows an enlarged structural schematic diagram of the welding machine mechanism in the present utility model.

[0032] Figure 5 It shows Figure 4 a partial exploded structural schematic diagram of

[0033] Figure 6 It shows an assembly schematic diagram of the upper and lower guiding mechanisms and the air circuit mechanism on the frame in the present utility model.

[0034] Figure 7 It shows Figure 6 a partial exploded structural schematic diagram of

[0035] Figure 8 It shows Figure 6 a structural schematic diagram from another perspective.

[0036] Element Label Explanation

[0037] Base plate 1; Frame 2; Fixture 3; Welding machine mechanism 4; Transducer 41; Amplitude modulator 42; Welding head 43; Pressure sensor 44; Cylinder 5; Up and down guiding mechanism 6; Guide rail 61; Slide block 62; Mounting seat 63; L-shaped frame 64; Connecting rod 65; Pneumatic circuit mechanism 7; Air tank 71; Proportional valve 72; Pressure regulating valve 73; Vortex tube 74; Mid-relief valve 75; Electric control valve 76; Magnetic grating encoder 8; Magnetic strip 9; Limit block 10; Limit pile 11; Fixed frame 12; Tension spring 13; Protective housing 14. Specific Embodiment

[0038] The following specific embodiments illustrate the implementation manners of the present invention. Those skilled in the art can easily understand other advantages and effects of the present invention from the content disclosed in this specification.

[0039] Please refer to Figures 1 to 8 . It should be noted that the structures, ratios, sizes, etc. shown in the drawings of this specification are only used to cooperate with the content disclosed in the specification for those skilled in the art to understand and read, and are not used to limit the implementation conditions of the present invention. Therefore, they do not have technical essence. Any modification of the structure, change of the proportional relationship, or adjustment of the size, without affecting the effects that the present invention can produce and the purposes that can be achieved, should still fall within the scope that the technical content disclosed by the present invention can cover. At the same time, the terms such as "upper", "lower", "left", "right", "middle", and "one" cited in this specification are only for the convenience of clear description and are not used to limit the implementation scope of the present invention. The change or adjustment of their relative relationships, without substantial change in the technical content, should also be regarded as the scope that the present invention can implement.

[0040] Please refer to Figures 1 - 5 , the present invention provides an ultrasonic welding machine, including a base plate 1 and a frame 2. A fixture 3 is provided on the base plate 1, and the workpiece to be welded is placed on the base plate 1 and fixed by the fixture 3; A welding machine mechanism 4 is installed at the side end of the frame 2, and a cylinder 5 is installed at the upper end. The welding machine mechanism 4 is connected to the output end of the cylinder 5, and the welding machine mechanism 4 is driven by the cylinder 5 to move up and down to weld the workpiece. Specifically, the welding machine mechanism 4 includes a transducer 41, an amplitude modulator 42 connected to the transducer 41, and a welding head 43 connected to the amplitude modulator 42. The amplitude modulator 41 is installed on the L-shaped frame 64, and the welding head 43 is installed on the output end of the cylinder 5.

[0041] Please refer to Figures 6 - 7, the frame 2 and the bottom plate 1 cooperate to form a C-shaped structure. An up-and-down guiding mechanism 6 is provided at the inner end of the frame 2. The up-and-down guiding mechanism 6 includes: two parallel and cooperating guide rails 61, and sliders 62 are slidably fitted on both of the two guide rails 61. The cooperation of the double guide rails 61 can improve the verticality of up-and-down guiding; a mounting seat 63, which is connected to both sliders 62 at the same time; an L-shaped frame 64 is provided on the mounting seat 63, a connecting rod 65 is provided at the lower end of the L-shaped frame 64, and the welding machine mechanism 4 is mounted on the connecting rod 65; a limiting block 10 is provided at one side end of the mounting seat 63, and a limiting pile 11 is provided on the frame 2. The limiting pile 11 is correspondingly directly below the limiting block 10, and is used to limit the downward movement range of the mounting seat 63 driven by the cylinder 5; the up-and-down guiding mechanism 6 using the cooperation of the guide rail 61 and the slider 62 can guide the downward movement of the welding machine 4, ensure the straightness of the downward movement of the welding head 43 for welding operations, and improve the welding effect; a fixing frame 12 is provided at the upper end of the frame 2, a tension spring 13 is mounted on the fixing frame 12, and the lower end of the tension spring 13 is connected to the L-shaped frame 64; the tension spring 13 can provide a pulling force by elongation or stretching to keep the up-and-down guiding mechanism 6 in a certain downward state, and the tension spring 13 can also adjust and control the movement of the up-and-down guiding mechanism 6 by providing a restoring force; at the same time, the tension spring 13 has elastic characteristics and can buffer and absorb part of the energy when encountering an impact force, reducing the influence of the up-and-down movement impact of the welding machine mechanism 4.

[0042] Please refer to Figure 6 , 8 , an air circuit mechanism 7 is provided at the outer end of the frame 2. The air circuit mechanism 7 includes: an air tank 71, and the air tank 71 is connected to the cylinder 5 through a pipeline; a vortex tube 74, which is mounted on the mounting seat 63; the input end of the vortex tube 74 is connected to the air tank 71 through a pipeline, and the output end is connected to the welding head 43 of the welding machine mechanism 4 through a pipeline (the pipeline in the attached drawing is drawn, and a corrugated pipe is used for connection to form an air circuit during actual use); the air circuit mechanism 7 can supply air to the cylinder 5 to meet the use requirements of the cylinder 5. At the same time, the cooperation of the air tank 71 and the vortex tube 72 can output cold air to the position of the welding head 43 during the welding operation and after the welding is completed for cooling, effectively reducing welding deformation and stress, thereby improving the welding accuracy and quality of the welded part. The air circuit mechanism 7 also includes a valve group. The valve group includes a proportional valve 72, a pressure regulating valve 73, a mid-relief valve 75, and an electric control valve 76. The proportional valve 72, the pressure regulating valve 73, the mid-relief valve 75, and the electric control valve 76 are all mounted on the air tank 71. Specifically, the proportional valve 72 is installed on the outlet pipeline of the air tank 71 and is used to adjust the pressure or flow rate of the output gas; the pressure regulating valve 73 is installed at the outlet of the air tank 71 or on the outlet pipeline and is used to control the output pressure of the gas in the air tank 71 to keep it within a set range; the mid-relief valve 75 is installed on the top or side of the air tank 71 to facilitate timely release of excessive pressure; the electric control valve 76 is connected to the outlet pipeline of the air tank 71 and is used to electrically adjust the flow of the gas according to the control signal.

[0043] Please refer to Figures 4 - 5 Figures 4 - 5 , a pressure sensor 44 is installed above the welding head 43 for real-time monitoring of the welding pressure. Please refer to Figures 6 - 7 Figures 6 - 7 , a magnetic grating encoder 8 is provided on the inner end of the frame 2, and the magnetic grating encoder 8 is distributed between two parallel and cooperating guide rails 61; a magnetic strip 9 is provided on the mounting base 63, and the magnetic strip 9 is electrically cooperated with the magnetic grating encoder 8. The magnetic grating encoder 8 has an ultra-high resolution and can fully meet the position control and position recording during the welding process. Cooperating with the automation software on the production line, different operating start and stop conditions of the welding head 43 can be expanded; the pressure sensor 44 can monitor the welding pressure when the welding head 43 contacts the welding in real time. The cooperation of the magnetic grating encoder 8 and the magnetic strip 9 can accurately detect the descending position of the welding head 43, which is beneficial to timely adjust the output of the cylinder 5 to keep the welding head 43 in an appropriate pressure state, avoiding the problems of excessive welding pressure damaging the welding and insufficient welding pressure resulting in poor welding, and further improving the welding effect.

[0044] In summary, the present utility model forms a C-shaped structure by cooperating the frame 2 with the bottom plate 1, which can release the space below the welding head 43 and is beneficial to the assembly and use of the upper and lower guiding mechanisms 6 and the air circuit mechanism 7; the setting of the upper and lower guiding mechanisms 6 can ensure the straightness of the downward movement of the welding head 43 for welding operations, and the setting of the air circuit mechanism 7 can simultaneously provide a gas source for the use of the cylinder 5 and output cold air to cool the welding head 43, improving the welding accuracy and quality of the welded parts; the combined use of the pressure sensor 44, the magnetic grating encoder 8, and the magnetic strip 9 can monitor the welding pressure and the descending position of the welding head 43 in real time, effectively improving the welding effect. Therefore, the present utility model effectively overcomes various disadvantages in the prior art and has high industrial utilization value.

[0045] The above embodiments are only illustrative of the principles and effects of the present utility model and are not used to limit the present utility model. Any person familiar with this technology can modify or change the above embodiments without departing from the spirit and scope of the present utility model. Therefore, all equivalent modifications or changes completed by those with ordinary knowledge in the technical field without departing from the spirit and technical idea disclosed by the present utility model should still be covered by the claims of the present utility model.

Claims

1. An ultrasonic welding machine, comprising a bottom plate and a frame. A fixture is provided on the bottom plate, and the welded part is placed on the bottom plate and fixed by the fixture. A welding machine mechanism is installed at the side end of the frame, and a cylinder is installed at the upper end. The welding machine mechanism is connected to the output end of the cylinder, and the welding machine mechanism is driven by the cylinder to move up and down to weld the welded part. It is characterized in that The frame and the bottom plate cooperate to form a C-shaped structure. An up-and-down guiding mechanism is provided at the inner side end of the frame. The up-and-down guiding mechanism includes: Two parallel and cooperating guide rails, and sliders are slidably fitted on both of the two guide rails; A mounting seat, which is simultaneously connected to the two sliders; An L-shaped frame is provided on the mounting seat, a connecting rod is provided at the lower end of the L-shaped frame, and the welding machine mechanism is installed on the connecting rod; An air circuit mechanism is provided at the outer side end of the frame. The air circuit mechanism includes: An air tank, which is connected to the cylinder through a pipeline; A vortex tube, which is installed on the mounting seat; the input end of the vortex tube is connected to the air tank through a pipeline, and the output end is connected to the welding machine mechanism through a pipeline.

2. The ultrasonic welder according to claim 1, wherein: The welding machine mechanism includes a transducer, an amplitude modulator connected to the transducer, and a welding head connected to the amplitude modulator. The amplitude modulator is installed on the L-shaped frame, and the welding head is installed on the output end of the cylinder.

3. The ultrasonic welding machine according to claim 2, characterized in that: A pressure sensor is installed above the welding head for real-time monitoring of the welding pressure.

4. The ultrasonic welding machine according to claim 1, characterized in that: A magnetic grating encoder is provided at the inner side end of the frame, and the magnetic grating encoder is distributed between the two parallel and cooperating guide rails; A magnetic strip is provided on the mounting seat, and the magnetic strip is electrically cooperated with the magnetic grating encoder.

5. The ultrasonic welder according to claim 4, wherein: A limiting block is provided at one side end of the mounting seat, and a limiting pile is provided on the frame. The limiting pile is correspondingly located directly below the limiting block for restricting the downward movement range of the cylinder driving the mounting seat.

6. The ultrasonic welding machine according to claim 1, wherein: A fixing frame is provided at the upper end of the frame, and a tension spring is installed on the fixing frame. The lower end of the tension spring is connected to the L-shaped frame.

7. The ultrasonic welding machine according to claim 1, characterized in that: Protective covers are provided at both the outer side end and the upper end of the frame.

Images