Ultrasonic welding machine for plastic mold

Abstract

The invention discloses an ultrasonic welding machine for plastic molds, which relates to the field of welding equipment and comprises a welding base, an outer shell and a supporting base; an ultrasonic generator is installed on the inner wall of the outer shell, and the ultrasonic generator is electrically connected to a transducer, and a control box for controlling the ultrasonic generator is arranged on one side of the welding base; a wind speed probe is arranged at the bottom of the transducer, and an amplification component comprises a gradient shell connected to a lower flange surface, a heating element is sleeved on the upper part of the gradient shell, and a plurality of groups of recessed areas are arranged at the lower part of the gradient shell, and folding panels filled with different dielectric layers are assembled in the recessed areas, a gas element is sleeved on the outer part of the gradient shell, the upper part of the gas element receives heat from the heating element, and the lower part of the gas element is connected to the folding panel, and the ultrasonic welding machine adjusts the ultrasonic propagation path through the provided heating element and gas element on the ultrasonic propagation path by detecting the wind speed change at the ultrasonic emission position, thereby avoiding ultrasonic propagation deviation and improving the ultrasonic welding effect.

Description

Technical Field

[0001] The invention relates to the field of plastic mould welding, in particular to an ultrasonic welding machine for plastic moulds. Background Art

[0002] With the rapid development of the plastics industry and the continuous improvement of the strength of general and engineering plastics, the application scope of plastic products is also expanding, and the consumption of plastic products is also increasing. Plastic products are processed and molded by injection molds, among which injection molds are an indispensable part of plastic molding. Some structural components in injection molds need to be welded.

[0003] For plastic welding, there is a traditional hot melt method, that is, two plastic parts are melted by heating. In order to improve the welding quality of plastic parts and reduce the waste caused by plastic welding, the problem of existing hot melt welding is solved by adopting ultrasonic welding. The existing ultrasonic welding is to act on the transducer through an ultrasonic generator, and the electrical energy is converted into necessary mechanical vibration through the transducer, so that the ultrasonic wave generated by the ultrasonic generator is transmitted to the welding head, and then acts on the positions of two plastic molds that need to be welded after vibration, so that the plastic mold can achieve the effect of ultrasonic welding. However, since the ultrasonic wave is affected by factors such as wind speed and temperature during the propagation process, when the wind speed at the ultrasonic generator where the ultrasonic wave is emitted is too large, the ultrasonic wave propagation is offset. When it acts on the plastic mold, although the plastic mold can achieve the effect of ultrasonic welding, the ultrasonic wave deviates from the track, resulting in ultrasonic deviation at the ultrasonic welding head position, and the welding effect is biased. Similarly, when the temperature is high, the ultrasonic wave propagates too fast, and too fast ultrasonic waves are prone to damage at the ultrasonic welding position. For this reason, we propose an ultrasonic welding machine for plastic molds. Summary of the invention

[0004] The object of the present invention is to provide an ultrasonic welding machine for plastic molds to solve the problems raised in the above background technology.

[0005] To achieve the above-mentioned purpose, the present invention provides the following technical solutions: an ultrasonic welding machine for a plastic mold, comprising a welding base and an outer shell, the welding base is connected to a support base, and the support base is connected to the outer shell through an adjustment member; a pressure actuator, a transducer, an amplifier assembly and a welding mounting head are sequentially arranged inside the outer shell, and an ultrasonic welding head is installed on the welding mounting head, an ultrasonic generator is installed on the inner wall of the outer shell, and the ultrasonic generator is electrically connected to the transducer, and a control box for controlling the ultrasonic generator is provided on one side of the welding base; the transducer and the amplifier assembly are assembled through a flange surface, and a groove is provided inside the flange surface installed at the bottom of the transducer, and a wind speed probe for detecting wind passing through the outlet of the transducer is provided in the groove, the amplifier assembly comprises a gradual shell connected to the lower flange surface, a heating element is sleeved on the upper part of the gradual shell, and a plurality of recessed areas are provided at the lower part of the gradual shell, and a folding panel filled with different dielectric layers is assembled in the recessed area, a gas component is sleeved on the outside of the gradual shell, the upper part of the gas component receives heat from the heating element, and the lower part of the gas component is connected to the folding panel.

[0006] Preferably, the upper part of the gradual shell is a first cone body, and the first cone body is made of temperature-sensitive material, an acoustic waveguide is provided on the inner wall of the first cone body, the lower part of the gradual shell is a second cone body, and an arc groove is provided at the connection between the second cone body and the first cone body, and the gas component is installed at the arc groove.

[0007] Preferably, the heating element comprises a heating ring sleeved on the first cone body, the heating ring is a multi-layer structure, and the diameters of the multi-layer heating rings are evenly spaced, the heating ring located at the lowest layer is connected to the outside of a first magnetic pole, and a second magnetic pole is provided on the top of the gas element.

[0008] Preferably, the gas part includes an airbag body installed inside the arc groove, the second magnetic pole is installed on the top of the airbag body, the airbag body is divided into two sections, and an elastic rod is connected in the middle of the two sections of the airbag body, the upper part of the airbag body is connected to a heat-conducting tube connected to the heating ring, and the lower part of the airbag body is connected to a branch pipe, a plurality of automatic air valves are connected to the branch pipe, and the automatic air valves are inserted into the second conical cylinder.

[0009] Preferably, a collar is connected to the elastic rod, and a crank lever is connected to the collar, and the bottom of the crank lever is connected to the folding panel.

[0010] Preferably, the outer part of the gradual change shell is covered with a protective support sleeve, the top of the protective support sleeve is connected to the flange surface, the bottom of the gradual change shell is connected to a fixed disk, and the bottom of the protective support sleeve is connected to the fixed disk.

[0011] Preferably, the welding mounting head is connected to the fixing plate, and a plurality of fine-tuning rods are connected to the welding mounting head, and a temperature sensing probe is provided at the bottom of the fine-tuning rod.

[0012] Preferably, the adjustment member includes a rack installed on the outside of the support seat, the outer shell is connected to a guide shell, the guide shell is connected to a crank, and the crank is connected to a gear meshing with the rack, the support seat is connected to a guide rod, the outer shell is connected to a guide plate, and the guide rod slides through the guide plate.

[0013] Preferably, a fixing column is installed on the top of the pressure actuator, and the fixing column is installed on the outer shell, and a telescopic rod is installed on the bottom of the pressure actuator, and a fixing sleeve is installed on one end of the telescopic rod.

[0014] Preferably, a plug-in post that cooperates with the fixing sleeve is connected to the top of the transducer.

[0015] Compared with the prior art, the present invention has the following beneficial effects:

[0016] The present invention designs a wind speed probe above the transducer, so as to detect in real time the wind speed condition to which the ultrasonic wave is subjected when it is emitted, and adjusts the ultrasonic wave propagation path through the heating element and the gas element provided on the ultrasonic wave propagation path by detecting the wind speed change at the ultrasonic wave emission position, thereby avoiding the ultrasonic wave propagation deviation and improving the ultrasonic welding effect.

[0017] The present invention designs different recessed areas on the side wall of the second cone body, and fills the recessed areas with different dielectric layers, thereby facilitating the conduction of ultrasonic waves through different dielectric layers, thereby improving the effect of ultrasonic waves on plastic welding. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 It is a schematic diagram of the overall structure of the present invention;

[0019] Figure 2 It is a structural schematic diagram of the support seat and the outer shell of the present invention;

[0020] Figure 3 This is a schematic diagram of the support base structure of the present invention;

[0021] Figure 4 This is a schematic diagram of the outer shell structure of the present invention;

[0022] Figure 5 This is a schematic diagram of the internal assembly structure of the outer shell of the present invention;

[0023] Figure 6 It is a schematic diagram of the partial explosion structure of the present invention;

[0024] Figure 7 This is a schematic diagram of the structure of the amplifier assembly of the present invention;

[0025] Figure 8 It is a schematic diagram of the structure of the gradual shell of the present invention;

[0026] Fig. 9 It is a schematic diagram of the structure of the heating element and the gas element of the present invention;

[0027] Fig.10 It is a schematic diagram of the local urgent structure of the gradual shell of the present invention;

[0028] Fig.11 It is a structural schematic diagram of the ultrasonic generator and transducer of the present invention;

[0029] Fig.12 for Fig.11 Another angle diagram of the structure.

[0030] In the figure: 1-welding base; 2-outer shell; 3-support seat; 4-adjustment member; 5-amplification assembly; 6-wind speed probe; 7-heating member; 8-gas member; 9-protection support sleeve; 21-pressure actuator; 22-transducer; 23-mounting head; 24-ultrasonic welding head; 25-ultrasonic generator; 26-control box; 27-flange surface; 28-fine-tuning rod; 29-temperature sensing probe; 41-rack; 42-guide shell; 43-crank handle; 44-gear; 45-guide rod; 46-guide Toward plate; 51-gradient shell; 52-depression area; 53-folding panel; 54-first cone body; 55-sound waveguide; 56-second cone body; 57-fixed plate; 71-heating ring; 72-first magnetic pole; 73-second magnetic pole; 81-air bag body; 82-elastic rod; 83-heat pipe; 84-branch pipe; 85-automatic air valve; 86-ring; 87-toggle crank rod; 211-fixed column; 212-telescopic rod; 213-fixed sleeve; 221-plug-in column; 271-groove. DETAILED DESCRIPTION

[0031] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0032] See also Figure 1-Figure 11 The present invention provides a technical solution: an ultrasonic welding machine for plastic molds, which is used to solve the problem that ultrasonic propagation is affected by ultrasonic propagation wind speed and ultrasonic propagation temperature during ultrasonic welding, resulting in poor ultrasonic welding effect.

[0033] The design includes a welding base 1 and an outer shell 2, the welding base 1 is connected to a support base 3, the support base 3 and the outer shell 2 are connected through an adjustment member 4. The welding base 1, the outer shell 2 and the support base 3 are shown in the attached Figure 1 -Attached Figure 4 As shown, the welding base 1 is in the shape of a scale plate, and a tray is installed on the top thereof. During welding, the welded clamp is fixed on the tray, and the connection position between the support seat 3 and the welding base 1 is a prism, which is fixed by bolts and other fixing parts. The bottom of the support seat 3 and the welding base 1 can also be fixedly connected by welding, and the top of the support seat 3 is a cylinder;

[0034] Reference Figure 3 It can be seen that the adjustment member 4 includes a rack 41 installed on the outside of the support seat 3, a guide housing 42 is connected to the outer shell 2, a crank 43 is connected to the guide housing 42, and a gear 44 meshing with the rack 41 is connected to the crank 43, a guide rod 45 is connected to the support seat 3, a guide plate 46 is connected to the outer shell 2, and the guide rod 45 slides through the guide plate 46, and a raised frame is designed at the bottom of the outer shell 2. The specific shape is not limited. In this scheme, it is preferred to attach Figure 4 As shown, the raised middle part of the frame can pass through the column part of the support seat 3, and the side wall of the raised frame is provided with a strip groove and a circular groove, wherein the strip groove is used to limit the sliding of the rack 41, and the circular groove is used to limit the rotation of the gear 44, wherein the rotating shaft part of the crank 43 is rotatably connected to the side wall of the raised frame, and different rotating parts can be selected here instead of manual shaking, and at the same time, a height adjustment method such as designing a plug-in hole on the outer shell 2 and designing a clamping column on the support seat 3 can also be adopted to adjust the height position of the outer shell 2 and the welding base 1.

[0035] The designed welding part refers to the attached Figure 5 , Attachment Figure 6As shown, the outer shell 2 is provided with a pressure actuator 21, a transducer 22, an amplification component 5 and a welding mounting head 23 in sequence, and an ultrasonic welding head 24 is installed on the welding mounting head 23. An ultrasonic generator 25 is installed on the inner wall of the outer shell 2, and the ultrasonic generator 25 is electrically connected to the transducer 22. A control box 26 for controlling the ultrasonic generator 25 is provided on one side of the welding base 1, wherein the control box 26 and the ultrasonic generator 25 are connected by wires, which is a prior art, so no further elaboration is made. At the same time, the page can be transmitted by wireless transmission, and the control box At 26, the relevant parameters required for the ultrasonic generator 25 are adjusted and set. The ultrasonic generator 25 can use existing signals such as DYA-40-12B or OEM1532K, which is convenient for installation on the inner wall of the outer shell 2. The transducer 22 uses an existing pulser of 0.1S-10S. The pressure actuator 21 here uses a hydraulic press. A fixed column 211 is installed on the top of the pressure actuator 21, and the fixed column 211 is installed on the outer shell 2. A telescopic rod 212 is installed at the bottom of the pressure actuator 21, and a fixed sleeve 213 is installed at one end of the telescopic rod 212. The top of the transducer 22 is connected with a plug-in column 221 that cooperates with the fixed sleeve 213. During welding, the telescopic rod 212 at the front end of the pressure actuator 21 is hydraulically pushed downward or upward. At this time, the plug-in column 221 installed at the fixed sleeve 213 starts to drive the transducer 22 to move synchronously. The ultrasonic generator 25 pipeline connected to the transducer 22 is a soft pipeline, so that the ultrasonic wave emitted by the ultrasonic generator 25 can be transmitted along with the transducer 22. Piezoelectric sheets are arranged inside the transducer 22, which will expand or contract when there is an electrical signal. When a sinusoidal alternating current is applied to the transducer 22, these piezoelectric elements will expand and contract at high frequencies and output the necessary mechanical vibrations required for welding. When the transducer 22 drives the amplifier component 5 and the ultrasonic welding head 24 to act downward, the mechanical vibrations generated by the transducer 22 are conducive to quickly acting the synchronously propagated ultrasonic waves on the plastic to be welded.

[0036] For the increase part, please refer to the attached Figure 7 -Attached Fig.10 As shown, the transducer 22 and the amplifier component 5 are assembled through a flange surface 27, and a groove 271 is provided inside the flange surface 27 installed at the bottom of the transducer 22, and a wind speed probe 6 for detecting wind passing through the outlet of the transducer 22 is provided in the groove 271, and the amplifier component 5 includes a gradual shell 51 connected to the lower flange surface 27, the upper part of the gradual shell 51 is covered with a heating element 7, and the lower part of the gradual shell 51 is provided with a plurality of groups of recessed areas 52, and the recessed areas 52 are assembled with folding panels 53 filled with different dielectric layers, and the outer part of the gradual shell 51 is covered with a gas component 8, the upper part of the gas component 8 receives the heat of the heating element 7, and the lower part of the gas component 8 is connected to the folding panel 53.

[0037] The upper part of the gradual shell 51 is a first cone body 54, and the first cone body 54 is a temperature-sensitive material. The inner wall of the first cone body 54 is provided with a sound waveguide 55. The lower part of the gradual shell 51 is a second cone body 56, and a circular arc groove is provided at the connection between the second cone body 56 and the first cone body 54, and the gas component 8 is installed at the circular arc groove.

[0038] The heating element 7 includes a heating ring 71 sleeved on the first conical cylinder 54. The heating ring 71 is a multi-layer structure, and the ring diameters of the multi-layer heating rings 71 are distributed at equal intervals. The heating ring 71 located at the lowest layer is connected to the outside with a first magnetic pole 72, and a second magnetic pole 73 is provided on the top of the gas element 8.

[0039] The gas part 8 includes an airbag body 81 installed inside the arc groove, the second magnetic pole 73 is installed on the top of the airbag body 81, the airbag body 81 is divided into two sections, and an elastic rod 82 is connected in the middle of the two sections of the airbag body 81, the upper part of the airbag body 81 is connected to a heat-conducting pipe 83 connected to the heating ring 71, and the lower part of the airbag body 81 is connected to a branch pipe 84, and a plurality of automatic air valves 85 are connected to the branch pipe 84, and the automatic air valve 85 is inserted into the second cone body 56.

[0040] The elastic rod 82 is connected to a collar 86 , and the collar 86 is connected to a crank lever 87 . The bottom of the crank lever 87 is connected to the folding panel 53 .

[0041] When the ultrasonic generator 25 generates ultrasonic wave propagation, at this time, since the wind speed probe 6 is set at the outlet of the transducer 22, the wind speed through the transducer 22 is detected in real time. When the wind speed is too large, the ultrasonic wave is easily adjusted in the propagation path by the wind speed. At this time, the ultrasonic wave propagation position can be cooled down to reduce the ultrasonic wave propagation speed on the one hand, and on the other hand, it is beneficial to cause the temperature difference change in the propagation path through the temperature difference change, so as to achieve the effect of guiding the ultrasonic wave. The heating ring 71 in this scheme can be at the topmost position of the first cone cylinder 54. When the wind speed is too large, the heating ring 71 needs to be gradually separated from the first cone cylinder 54. By controlling the first magnetic pole 72 and the second magnetic pole The two magnetic poles 73 are opposite to each other, generating mutual attraction, so that the heating ring 71 can be moved from the part with large diameter to the part with small diameter of the first cone body 54. Since the heating ring 71 is a multi-layer coil with equidistant distribution, the coil diameter of the heating ring 71 at the top is much larger than the coil diameter at the bottom, that is, when the heating ring 71 moves downward, the heating ring 71 part is not in contact with the first cone body 54. At this time, the temperature at the bottom of the opening of the first cone body 54 is lower than that of the lower part. At the top of the first cone body 54, the ultrasonic wave propagation speed is lower than that of the lower part. At the same time, when the heating ring 71 moves downward, heat conversion is caused. At this time, the heat is conducted to the airbag 81 to generate gas. The automatic air valve 85 selectively discharges gas to adjust the ultrasonic propagation direction of the second cone body 56, so that the ultrasonic propagation speed is reduced at the top position of the first cone body 54, and the ultrasonic wave that has been propagated to the second cone body 56 is adjusted by heat conversion at the second cone body 56. At the same time, when the heating ring 71 moves downward, the connection between the first cone body 54 and the second cone body 56 is synchronously driven to shrink, so that the sound waveguide sheet 55 installed inside the first cone body 54 begins to gather towards the middle position of the pipe mouth, so as to facilitate the guidance of the ultrasonic wave to the center position of the pipe mouth. At the second cone body 56, when the airbag 81 is squeezed and contracted, it is convenient for the middle part of the two sections of the airbag 81 to The elastic rod 82 contracts, which helps to drive the crank rod 87 to move the folding panel 53, so that different dielectric layers on the folding panel 53 contact the ultrasonic wave, thereby achieving the effect of guiding the ultrasonic wave. Similarly, when the ultrasonic wave propagation wind speed is relatively low at the detection point of the wind speed probe 6, at this time, by adjusting the first magnetic pole 72 and the second magnetic pole 73 to the same magnetic pole, it is convenient for the heating ring 71 to be close to the top position of the first cone cylinder 54, so as to achieve heating at the beginning of propagation, which is convenient for ultrasonic wave propagation. The magnetic pole control of the first magnetic pole 72 and the second magnetic pole 73 here can be achieved through the existing wireless control, and the magnetic force contained in the two magnetic poles can be set at the same time, thereby adjusting the position of the first magnetic pole 72 and the second magnetic pole 73.

[0042] The outer part of the gradual change shell 51 is covered with a protective support sleeve 9 , the top of which is connected to the flange surface 27 , and the bottom of the gradual change shell 51 is connected to a fixing plate 57 , the bottom of which is connected to the fixing plate 57 .

[0043] The welding mounting head 23 is connected to the fixing plate 57 , and a plurality of fine-tuning rods 28 are connected to the welding mounting head 23 . A temperature sensing probe 29 is provided at the bottom of the fine-tuning rod 28 . The temperature sensing probe 29 is useful for detecting the temperature at the welding position.

[0044] It should be noted that, in this article, relational terms such as first and second, etc. are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Moreover, the terms "include", "comprise" or any other variants thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, article or device.

[0045] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. An ultrasonic welding machine for plastic molds, comprising a welding base (1) and an outer shell (2), wherein the welding base (1) is connected to a support base (3), characterized in that: The support seat (3) and the outer shell (2) are connected via an adjustment member (4); The outer shell (2) is provided with a pressure actuator (21), a transducer (22), an amplification component (5) and a welding mounting head (23) in sequence, and an ultrasonic welding head (24) is installed on the welding mounting head (23); an ultrasonic generator (25) is installed on the inner wall of the outer shell (2), and the ultrasonic generator (25) is electrically connected to the transducer (22); and a control box (26) for controlling the ultrasonic generator (25) is provided on one side of the welding base (1); The transducer (22) and the amplifier assembly (5) are assembled via a flange surface (27), and a groove (271) is provided inside the flange surface (27) installed at the bottom of the transducer (22), and a wind speed probe (6) for detecting wind passing through the outlet of the transducer (22) is provided in the groove (271). The amplifier assembly (5) comprises a gradual change shell (51) connected to the lower flange surface (27), a heating element (7) is provided on the upper part of the gradual change shell (51), and a plurality of recessed areas (52) are provided on the lower part of the gradual change shell (51), and folding panels (53) filled with different dielectric layers are assembled in the recessed areas (52), a gas element (8) is provided on the outside of the gradual change shell (51), and the upper part of the gradual change shell (51) is a first cone body (54), and the first cone body (54) is provided on the upper part of the gradual change shell (51). The body (54) is made of a temperature-sensitive material, the inner wall of the first cone body (54) is provided with a sound waveguide sheet (55), the lower part of the gradual shell (51) is a second cone body (56), and a circular arc groove is provided at the connection between the second cone body (56) and the first cone body (54), the gas component (8) is installed at the circular arc groove, the upper part of the gas component (8) receives heat from the heating component (7), and the lower part of the gas component (8) is connected to the folding panel (53), the heating component (7) includes a heating ring (71) sleeved on the first cone body (54), the heating ring (71) is a multi-layer structure, and the ring diameters of the multi-layer heating rings (71) are distributed at equal intervals, the heating ring (71) located at the lowest layer is connected to the outside of the first magnetic pole (72), and the top of the gas component (8) is provided with a second magnetic pole (73).

2. The ultrasonic welding machine for plastic mold according to claim 1, characterized in that: The gas component (8) comprises an airbag body (81) installed inside the circular arc groove, the second magnetic pole (73) is installed on the top of the airbag body (81), the airbag body (81) is divided into two sections, and an elastic rod (82) is connected in the middle of the two sections of the airbag body (81), the upper part of the airbag body (81) is connected to a heat conduction pipe (83) connected to the heating ring (71), and the lower part of the airbag body (81) is connected to a branch pipe (84), and the branch pipe (84) is connected to a plurality of automatic air valves (85), and the automatic air valves (85) are inserted into the second cone body (56).

3. The ultrasonic welding machine for plastic mold according to claim 2, characterized in that: The elastic rod (82) is connected to a sleeve ring (86), and the sleeve ring (86) is connected to a crank lever (87), and the bottom of the crank lever (87) is connected to the folding panel (53).

4. The ultrasonic welding machine for plastic mold according to claim 1, characterized in that: The outer part of the gradual change shell (51) is covered with a protective support sleeve (9), the top of which is connected to the flange surface (27), the bottom of the gradual change shell (51) is connected to a fixed plate (57), and the bottom of the protective support sleeve (9) is connected to the fixed plate (57).

5. The ultrasonic welding machine for plastic mold according to claim 4, characterized in that: The welding installation head (23) is connected to the fixing plate (57), and a plurality of fine-tuning rods (28) are connected to the welding installation head (23), and a temperature sensing probe (29) is provided at the bottom of the fine-tuning rod (28).

6. The ultrasonic welding machine for plastic mold according to claim 1, characterized in that: The adjusting member (4) comprises a rack (41) mounted on the outside of the support seat (3); the outer shell (2) is connected to a guide shell (42); the guide shell (42) is connected to a crank (43); the crank (43) is connected to a gear (44) meshing with the rack (41); the support seat (3) is connected to a guide rod (45); the outer shell (2) is connected to a guide plate (46); and the guide rod (45) slides through the guide plate (46).

7. The ultrasonic welding machine for plastic mold according to claim 1, characterized in that: A fixing column (211) is installed on the top of the pressure actuator (21), and the fixing column (211) is installed on the outer shell (2); a telescopic rod (212) is installed on the bottom of the pressure actuator (21), and a fixing sleeve (213) is installed on one end of the telescopic rod (212).

8. The ultrasonic welding machine for plastic mold according to claim 7, characterized in that: The top of the transducer (22) is connected to a plug-in post (221) that matches the fixing sleeve (213).

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