An inverted ultrasonic welding device for cosmetic bottles

Abstract

This invention discloses an inverted ultrasonic welding device for cosmetic bottles, comprising: a frame, a turntable, a welding device, and a leak detection and unloading device. The turntable has a support assembly, the welding device is located above the support assembly, and the leak detection and unloading device is located on one side of the turntable. The leak detection and unloading device includes: a loading device, a workpiece tray, a leak detection device, and an unloading device. The workpiece tray has a receiving plate. The loading device is used to transfer the welded workpiece from the turntable to the receiving plate located at the loading station. The receiving plate has an installation groove, and the bottom of the installation groove has a sealing conduit. The bottom of the installation groove has an airtight port extending to the sealing conduit. The leak detection device includes an air supply device and a pressing rod. The air supply device is connected to an air supply end, which is airtightly connected to the airtight port for leak detection. This invention has strong workpiece compatibility and advantages such as high welding yield and strong leak detection airtightness.

Description

Technical Field

[0001] This invention relates to packaging production equipment, and more particularly to an inverted ultrasonic welding device for cosmetic bottles. Background Technology

[0002] With the development of the cosmetics industry, various designs have emerged for cosmetic packaging bottles on the market. Some of these bottles feature unique shapes or non-flat bottoms for a distinctive appearance, such as... Figure 1 As shown, the production of these cosmetic bottles currently involves simultaneously welding the bottle nozzle to the bottle body using ultrasonic welding. However, the emergence of these irregularly shaped or non-flat-bottomed bottles has led to the problem that commonly available ultrasonic welding equipment is difficult to adapt to them.

[0003] For example, the existing technology CN219881549U3 provides an ultrasonic automatic welding airtightness testing device, which uses two feeding devices to transport the bottle mouth and bottle body to the turntable and then uses an ultrasonic welding device to weld them. However, it has certain technical defects when dealing with irregularly shaped or non-flat bottom workpieces.

[0004] Reference Figure 1 As it is a non-flat-bottomed workpiece, if the bottle body is upright and the bottle mouth is facing upward, it is necessary to ensure that the bottle body of each workpiece can be fixed horizontally on the turntable and will not tilt. Only when the bottle mouth is welded from bottom to top can the force be evenly distributed during welding and the yield rate of the weld be ensured.

[0005] However, due to the increasing variety of bottle designs, the support component cannot be compatible with every bottle type and ensure its horizontal fixation. Therefore, this application inverts the bottle body and the nozzle, so that the nozzle with a horizontal rim is horizontally fixed to the support component, while the bottle body is welded downwards to the nozzle, avoiding the aforementioned problems. At the same time, the inverted welding provides a larger stress area, which is transferred through the bottle body to the connection between the bottle body and the nozzle. This stress distribution method from large to small results in a more uniform and stable stress distribution.

[0006] After the workpiece is welded, it needs to be leak tested. Generally, this is done by pressing the bottle body and nozzle from bottom to top with an air supply device. At the same time, the air supply pipe is inserted into the nozzle and supplies air to the inside, while a pressure sensor detects the internal pressure of the workpiece. The advantage of this leak testing method with the bottle body placed upright is that when the air supply device is pressed down, the rim of the bottle mouth is horizontal, and the downward pressure is evenly distributed and acts on the connection between the bottle body and the nozzle. In addition, the distance between the two connection points is closer, resulting in better airtightness of the workpiece itself and the connection between the air supply device and the workpiece. The inverted leak testing method has higher requirements for airtightness. However, if the workpiece needs to be rotated after welding before leak testing, each device needs to have a rotating component and an additional process, which is not conducive to the high-speed production of workpieces.

[0007] To overcome the aforementioned technical problems, this paper presents an inverted ultrasonic welding device for cosmetic bottles. Summary of the Invention

[0008] The technical problem to be solved by the embodiments of the present invention is to overcome the problem of uneven force and loose welding caused by irregularly shaped cosmetic bottles when welding them upright. In order to solve the above problem, this solution uses the horizontal bottle mouth of the bottle mouth to invert the workpiece so that the bottle body is welded to the bottle mouth in an inverted position. In order to avoid the need to flip it over again for leak testing after welding, this solution also overcomes the problem that the airtightness of the workpiece is difficult to guarantee when testing for leaks in an inverted position. A complete set of leak testing devices is designed and combined with the aforementioned welding device to form a complete set of cosmetic bottle production equipment that can perform inverted welding, transfer, inverted leak testing, and unloading.

[0009] An inverted ultrasonic welding device for cosmetic bottles includes: a frame, a turntable, a welding device, and a leak detection and unloading device.

[0010] The turntable is rotatably mounted above the frame. The turntable is equipped with a support component. The nozzle of the cosmetic bottle can be inverted and fixed on the support component. The welding device is located above the support component. The welding device can perform ultrasonic welding on the inverted bottle body and nozzle to assemble them into a workpiece.

[0011] The leak detection and unloading device is located on one side of the turntable. The leak detection and unloading device includes: a loading device, a workpiece tray, a leak detection device, and an unloading device. The workpiece tray has several receiving trays. The workpiece tray is rotatable and allows the receiving trays to pass sequentially through the loading station, the leak detection station, the unloading station, and the return station. The loading device is used to transfer the workpieces on the turntable to the receiving trays located at the loading station. The receiving trays are provided with mounting grooves, and a sealing conduit is protruding from the mounting grooves. The leak detection device is conductively connected to the sealing conduit.

[0012] After the workpiece is transferred from the loading station to the leak testing station, the opening of the workpiece faces downward and is inserted into the airtight port. The leak testing device supplies air to the inside of the workpiece through the sealed conduit and tests for leaks. After the leak test is completed, the workpiece passes through the unloading station and the return station in sequence. Qualified products are transferred through the unloading device on the unloading station, and unqualified products are collected at the return station.

[0013] The supporting component includes a base plate and a fixing component. The turntable is provided with mounting screw holes. The base plate is installed on the turntable by screws that engage with the mounting screw holes. The fixing component and the base plate are connected by connecting screws. The fixing component is provided with a fixing rod that can cooperate with the bottle mouth of the workpiece. The supporting component includes a base plate and a fixing component. The turntable is provided with mounting screw holes. The base plate is installed on the turntable by screws that engage with the mounting screw holes. The fixing component and the base plate are connected by connecting screws. The fixing component is provided with a fixing rod that can cooperate with the bottle mouth of the workpiece.

[0014] The turntable is provided with a support device at its bottom, which includes a support bolt, a support cylinder, a support component, and a sliding component.

[0015] The support bolt is threaded into the turntable, and the upper end face of the support bolt abuts against the bottom surface of the base plate. The output shaft of the support cylinder is connected to the sliding member. The upper end face of the sliding member has a low platform, a lifting slope, and a high platform. The support cylinder can push the sliding member and cause the support member to transition along the low platform, the lifting slope, and the high platform. The support member is lifted and abuts against the support bolt, thereby counteracting the downward pressure applied to the turntable by the welding device during the welding process.

[0016] The frame is connected to a support, the workpiece tray is rotatably mounted on the support and driven by a servo motor at the bottom of the support, the air supply device is located below the support near the leak detection station, the feeding device is movably mounted on the feeding slide rail of the support and moves back and forth between the turntable and the feeding station, and the unloading device is located on the unloading slide rail of the support.

[0017] The bottom of the mounting groove is provided with an airtight socket, and the sealing conduit and the airtight socket are connected vertically.

[0018] The leak detection device includes an air supply device, the output end of which is a liftable air supply head that can be airtightly connected to the airtight socket.

[0019] The leak detection device also includes a pressing push rod, which is vertically and vertically positioned above the mounting groove via a cylinder. The pressing push rod can be pressed down during leak detection of the workpiece to maintain the airtightness of the workpiece.

[0020] The loading and unloading devices are both gripper assemblies. The gripper assemblies are driven by their respective connected displacement cylinders. Each gripper assembly includes a gripper cylinder and grippers. The gripper cylinder can control the opening and closing of the grippers to grip or release the workpiece.

[0021] The airtight socket is provided with a sealing ring on the outside. When the air supply end is inserted into the airtight socket, it can cooperate with the sealing ring to ensure airtightness.

[0022] It also includes a pressure sensing device, the pressure measuring end of which is inserted into the workpiece through the sealed conduit to detect the internal pressure of the workpiece.

[0023] Implementing the embodiments of the present invention has the following beneficial effects: 1. It has stronger compatibility with irregularly shaped workpieces, especially those with non-flat bottoms. This application avoids the problem of uneven force distribution when welding irregularly shaped workpieces that are difficult to place horizontally, by using inverted welding, which greatly improves the yield rate during welding. 2. It overcomes the airtightness problem of inverted cosmetic bottles during leak testing, avoiding the need to rotate the workpiece after inverted welding in existing solutions, which require additional rotating devices. This reduces the production cost of the device and avoids additional processes affecting the high-speed production of workpieces. Attached Figure Description

[0024] Figure 1 This is a schematic diagram of the workpiece of the present invention; Figure 2 This is a three-dimensional schematic diagram of the present invention; Figure 3 This is a schematic diagram of the turntable and the supporting device below it according to the present invention; Figure 4 This is a schematic diagram showing the disassembled support component of the present invention; Figure 5 This is a schematic diagram of the leak detection and feeding device of the present invention; Figure 6 These are front and rear views of the workpiece tray of the present invention, wherein (A) is a front view and (B) is a rear view; Figure 7 This is a cross-sectional view of the leak detection device and the workpiece tray of the present invention; Figure 8 This is a schematic diagram of the gripper assembly of the present invention. Detailed Implementation

[0025] To make the objectives, technical solutions, and advantages of the present invention clearer, the present invention will be further described in detail below with reference to the accompanying drawings.

[0026] To better understand the inverted welding and leak detection scheme used in this application, please refer to... Figure 1 The components include bottle body A-1 and bottle nozzle A-2. Bottle nozzle A-2 is connected to bottle body A-1 via ultrasonic welding, thus forming a complete cosmetic packaging bottle. Figure 1 This is just one type of workpiece applicable to this embodiment. This solution is not limited to being applied to any type of workpiece, and the shape of the workpiece is not the subject of this protection.

[0027] like Figures 2-5 As shown, an inverted ultrasonic welding device for cosmetic bottles includes: a frame 1, a turntable 2, a welding device 3, and a leak detection and feeding device 4.

[0028] The turntable 2 is rotatably mounted above the frame 1. The turntable 2 is provided with a support component 21. The bottle mouth of the cosmetic bottle can be inverted and fixed on the support component 21. The welding device 3 is located above the support component 21. The welding device 3 can perform ultrasonic welding on the inverted bottle body and bottle mouth to assemble them into a workpiece.

[0029] The leak detection and unloading device 4 is disposed on one side of the turntable 2. The leak detection and unloading device 4 includes: a loading device 41, a workpiece tray 42, a leak detection device 43, and an unloading device 44. The workpiece tray 42 has a plurality of receiving trays 421. The workpiece tray 42 is rotatable and allows the receiving trays 421 to pass sequentially through the loading station, the leak detection station, the unloading station, and the return station. The loading device 41 is used to transfer the welded workpieces on the turntable 2 to the receiving trays 421 located at the loading station. The receiving trays 421 are provided with mounting grooves 422. The bottom of the mounting grooves 422 is provided with sealing conduits 423. The bottom of the mounting grooves 422 is provided with airtight inlets 424. The sealing conduits 423 and the airtight inlets 424 are vertically connected.

[0030] The leak detection device 43 includes: an air supply device 431 and a press rod 432 that can be raised and lowered above the mounting groove 422. The air supply device 431 is connected to an air supply end 4311 that can be raised and lowered and can be airtightly inserted into the airtight socket 424.

[0031] After the workpiece is transferred from the loading station to the leak testing station, the opening of the workpiece faces downward and is inserted into the airtight socket 424. The pressing rod 432 presses down to maintain the airtight connection between the workpiece and the sealing conduit 423. The air supply end 4311 of the air supply device 431 rises upward, and the air supply end 4311 and the airtight socket 424 are inserted into each other. Then, air is supplied to the inside of the workpiece through the sealing conduit 423 to test for leaks. After the leak test is completed, the workpiece passes through the unloading station and the return station in sequence. The qualified products are transferred through the unloading device 44 on the unloading station, and the unqualified products are collected at the return station.

[0032] It should be noted that this device uses an inverted welding method, which also helps to enhance the ultrasonic welding effect.

[0033] Please combine Figure 1 If the ultrasonic welding method with the bottle mouth facing upwards is used, when the welding head of the ultrasonic welding machine presses down, its contact surface is only around the bottle mouth, the contact area is very small, and the material is relatively thin. However, if the inverted welding method is used, when the welding head of the ultrasonic welding machine presses down, its contact surface is on the entire bottom of the bottle, the contact area is larger, the ultrasonic welding effect is better, and the vibration generated during ultrasonic welding can be transmitted downwards through the larger contact area, resulting in better vibration transmission.

[0034] In addition, welding with the bottle mouth facing upwards and the bottle placed upright results in a smaller contact area. This leads to a more concentrated force when the welding head is pressed down, placing greater downward pressure on the bottle mouth and increasing the risk of damage to both the bottle mouth and the welding head. This is especially true if the bottle mouth has an external coating applied through a spray coating process; the downward pressure further exacerbates the damage. If the nozzle is too large, it can easily damage or scratch the outer coating of the bottle mouth. In contrast, inverted welding, because the stress point is on the entire bottom of the bottle, has a larger stress surface and more even stress distribution, so it is less likely to cause the above problems.

[0035] like Figure 3 As shown, the bottom of the turntable 2 is provided with a support device 22, which includes: a support bolt 221, a support cylinder 222, a support member 223, and a sliding member 224.

[0036] The support bolt 221 is threaded into the turntable 2. The upper end face of the support bolt 221 abuts against the bottom surface of the base plate 211. The output shaft of the support cylinder 222 is connected to the sliding member 224. The upper end face of the sliding member 224 has a low platform, a lifting slope, and a high platform. The support cylinder 222 can push the sliding member 224 and cause the support member 223 to transition along the low platform, the lifting slope, and the high platform. The support member 223 is lifted and abuts against the support bolt 221, thereby counteracting the downward pressure applied to the turntable 2 by the welding device 3 during the welding process.

[0037] It should be noted that the above-mentioned support device adopts the same scheme as the existing patent CN120791113B, and it can completely adopt its support scheme for the turntable. This part of the support device is not the focus of this application, so it will not be described in detail.

[0038] like Figure 4 As shown, the supporting component 21 includes: a base plate 211 and a fixing component 212.

[0039] The turntable 2 is provided with mounting screw holes. The base plate 211 is installed on the turntable 2 by screws and mounting screw holes. The fixing member 212 and the base plate 211 are connected by connecting screws. The fixing member 212 is provided with a fixing rod 2121 that can cooperate with the bottle mouth of the workpiece.

[0040] In use, the bottle mouth can be placed on the support component 21 by mechanical means or manually. At the same time, the bottle mouth is inserted and fixed by the fixing rod 2121. Then, the bottle body is inverted and placed above the bottle mouth by mechanical or manual means.

[0041] like Figure 5 As shown, the leak detection and unloading device 4 is located on one side of the turntable 2. The leak detection and unloading device 4 includes: a loading device 41, a workpiece tray 42, a leak detection device 43, and an unloading device 44.

[0042] The leak detection and unloading device 4 is disposed on one side of the turntable 2. The leak detection and unloading device 4 includes: a loading device 41, a workpiece tray 42, a leak detection device 43, and an unloading device 44. The workpiece tray 42 has a plurality of receiving trays 421. The workpiece tray 42 is rotatable and allows the receiving trays 421 to pass sequentially through the loading station, the leak detection station, the unloading station, and the return station. The loading device 41 is used to transfer the welded workpieces on the turntable 2 to the receiving trays 421 located at the loading station. The receiving trays 421 are provided with mounting grooves 422. The bottom of the mounting grooves 422 is provided with sealing conduits 423. The bottom of the mounting grooves 422 is provided with airtight inlets 424. The sealing conduits 423 and the airtight inlets 424 are vertically connected.

[0043] like Figure 6 As shown in (A), the workpiece tray 42 has a plurality of receiving trays 421. The workpiece tray 42 is rotatable and the receiving trays 421 can pass through the loading station, the leak detection station, the unloading station and the return station in sequence. The loading device 41 is used to transfer the workpieces that have been welded on the turntable 2 to the receiving trays 421 located at the loading station.

[0044] The receiving plate 421 is provided with a mounting groove 422, and a sealing conduit 423 is provided at the bottom of the mounting groove 422. The bottom of the mounting groove 422 is provided with... Figure 6 (B) shows the airtight socket 424, and the sealing conduit 423 and the airtight socket 424 are connected vertically.

[0045] It should be noted that the loading station refers to the station where, after the workpiece is welded, the loading device 41 transfers the workpiece to the workpiece tray 42 and, as the workpiece tray 42 rotates, transfers it to the leak detection station. The leak detection station is used to detect leaks in the workpiece. After the leak detection is completed, the internal air pressure of the workpiece can be detected. Qualified workpieces are transferred to the unloading station, where they are unloaded by the unloading device and output as finished products. Non-compliant workpieces are not clamped in the unloading station but are further transferred to the return station for collection.

[0046] Specifically, a bracket 11 is connected to the frame 1, and the workpiece tray 42 is rotatably mounted on the bracket 11 and driven by a servo motor located at the bottom of the bracket 11. The gas supply device 431 is located below the bracket 11 near the leak detection station. The feeding device 41 is movably mounted on the feeding slide rail of the bracket 11 and moves back and forth between the turntable 2 and the feeding station. The unloading device 44 is mounted on the unloading slide rail of the bracket.

[0047] like Figure 7As shown, the leak detection device includes: the leak detection device 43 includes: an air supply device 431 and a pressing rod 432 disposed above the mounting groove 422. The air supply device 431 is connected to a liftable air supply end 4311, which can be airtightly inserted into the airtight socket 424.

[0048] Combination Figure 7 And refer to Figure 6 (B) The gas supply device 431 is connected to a liftable gas supply end 4311. The gas supply end 4311 can be gas-tightly inserted into the airtight socket 424. The sealing conduit 423 protrudes from the bottom of the mounting groove 422. A sealing ring 4241 is provided on the outside of the airtight socket 424. When the gas supply end 4311 is inserted into the airtight socket 424, it can cooperate with the sealing ring 4241 to ensure airtightness.

[0049] It should be noted that the bottom of the mounting groove 422, together with the sealing conduit 423 and the sealing ring 4241, are all made of silicone. The silicone material allows the nozzle to improve airtightness when the workpiece is squeezed by the push rod by the deformation of the silicone. At the same time, the silicone sealing ring 4241 at the junction of the air supply end 4311 and the airtight socket 424 also helps to improve airtightness.

[0050] like Figure 8 As shown, both the loading device 41 and the unloading device 44 are gripper assemblies 5. The gripper assemblies 5 are driven by their respective connected displacement cylinders, which enable the loading device 41 to move on the loading slide rail and the unloading device 44 to move on the unloading slide rail. The gripper assembly 5 includes a gripper cylinder 51 and a gripper 52. The gripper cylinder 51 can control the opening and closing of the gripper 52 to grip or release the workpiece.

[0051] The gripper assembly 5 and its loading and unloading slide rails in this application are conventional structures in the art, and are only used to transfer workpieces. They are not the content that this solution intends to protect. Any solution that replaces them with a structure with the same function should fall within the protection scope of this application.

[0052] More preferably, it also includes a pressure sensing device, the pressure measuring end of which is installed on the sealed conduit 423 to detect the internal pressure of the workpiece.

[0053] In this embodiment, the air pressure sensing device marks the workpiece as qualified after detecting that the internal air pressure of the workpiece exceeds the set threshold. The qualified workpiece is transferred to the unloading station as the workpiece tray 42 rotates, and is carried away by the unloading device 44. When the air pressure sensing device detects that the internal air pressure of the workpiece cannot exceed the set threshold, the workpiece is marked as non-compliant. The non-compliant workpiece is not carried away when it rotates to the unloading station, but continues to be carried to the return station for collection as the workpiece turntable 42 rotates.

[0054] Of course, the above embodiments are only for illustrating the technical concept and features of the present invention, and their purpose is to enable those skilled in the art to understand the content of the present invention and implement it accordingly. They should not be used to limit the scope of protection of the present invention. All modifications made according to the spirit and essence of the main technical solution of the present invention should be covered within the scope of protection of the present invention.

Claims

1. An inverted ultrasonic welding device for cosmetic bottles, characterized in that, include: The frame (1), turntable (2), welding device (3) and leakage detection and feeding device (4); The turntable (2) is rotatably mounted above the frame (1). The turntable (2) is provided with a support component (21). The bottle mouth of the cosmetic bottle can be inverted and fixed on the support component (21). The welding device (3) is located above the support component (21). The welding device (3) ultrasonically welds the inverted bottle body and bottle mouth to form a workpiece. The leak detection and unloading device (4) is located on one side of the turntable (2). The leak detection and unloading device (4) includes: a loading device (41), a workpiece tray (42), a leak detection device (43), and an unloading device (44). The workpiece tray (42) has several receiving trays (421). The workpiece tray (42) is rotatable and allows the receiving trays (421) to pass through the loading station, the leak detection station, the unloading station, and the return station in sequence. The loading device (41) is used to transfer the workpiece on the turntable (2) to the receiving tray (421) located at the loading station. The receiving tray (421) is provided with an installation groove (422). A sealing conduit (423) is protruding from the installation groove (422). The leak detection device (43) is connected to the sealing conduit (423). After the workpiece is transferred from the loading station to the leak testing station, the workpiece is fixed in the mounting groove (422) with its opening facing downwards. The leak testing device (43) supplies air to the inside of the workpiece through the sealing conduit (423) and tests for leaks. After the leak test is completed, the workpiece passes through the unloading station and the return station in sequence. The leak-tested qualified products are transferred through the unloading device (44) on the unloading station, and the unqualified products are collected at the return station.

2. The inverted ultrasonic welding equipment for cosmetic bottles according to claim 1, characterized in that, The supporting component (21) includes: a base plate (211) and a fastener (212); The turntable (2) is provided with mounting screw holes. The base plate (211) is installed on the turntable (2) by screws and mounting screw holes. The fixing part (212) and the base plate (211) are connected by connecting screws. The fixing part (212) is provided with a fixing rod (2121) that can cooperate with the bottle mouth of the workpiece.

3. The inverted ultrasonic welding equipment for cosmetic bottles according to claim 2, characterized in that, The bottom of the turntable (2) is provided with a support device (22), which includes: a support bolt (221), a support cylinder (222), a support member (223), and a sliding member (224). The support bolt (221) is screwed through into the turntable (2). The upper end face of the support bolt (221) abuts against the bottom surface of the base plate (211). The output shaft of the support cylinder (222) is connected to the sliding member (224). The upper end face of the sliding member (224) has a low platform, a lifting slope and a high platform. The support cylinder (222) can push the sliding member (224) and make the support member (223) transition along the low platform and the lifting slope to the high platform. The support member (223) is lifted and abuts against the support bolt (221), thereby offsetting the downward pressure applied to the turntable (2) by the welding device (3) during the welding process.

4. The inverted ultrasonic welding equipment for cosmetic bottles according to claim 1, characterized in that, The bottom of the mounting groove (422) is provided with an airtight socket (424), and the sealing conduit (423) and the airtight socket (424) are connected vertically.

5. The inverted ultrasonic welding equipment for cosmetic bottles according to claim 4, characterized in that, The leak detection device (43) includes an air supply device (431), and the output end of the leak detection device (43) is a liftable air supply head (4311), which can be airtightly connected to the airtight socket (424).

6. The inverted ultrasonic welding equipment for cosmetic bottles according to claim 5, characterized in that, A bracket (11) is connected to the frame (1), and the workpiece tray (42) is rotatably mounted on the bracket (11) and driven by a servo motor provided at the bottom of the bracket (11). The gas supply device (431) is located below the bracket (11) near the leak detection station. The feeding device (41) is movably located on the feeding slide rail of the bracket (11) and moves back and forth between the turntable (2) and the feeding station. The unloading device (44) is located on the unloading slide rail of the bracket.

7. The inverted ultrasonic welding equipment for cosmetic bottles according to claim 5, characterized in that, The airtight socket (424) is provided with a sealing ring (4241) on the outside. When the air supply end (4311) is inserted into the airtight socket (424), it can cooperate with the sealing ring (4241) to ensure airtightness.

8. The inverted ultrasonic welding equipment for cosmetic bottles according to claim 1, characterized in that, The leak detection device (43) also includes a pressing push rod (432), which is mounted above the mounting groove (422) by means of a cylinder. The pressing push rod (432) can be pressed down during leak detection of the workpiece to maintain the airtightness of the workpiece.

9. An inverted ultrasonic welding device for cosmetic bottles according to claim 1, characterized in that, The loading device (41) and unloading device (44) are both gripper assemblies (5), and the gripper assemblies (5) are driven by their respective connected displacement cylinders; The gripper assembly (5) includes a gripper cylinder (51) and a gripper (52). The gripper cylinder (51) can control the gripper (52) to open and close, thereby gripping or releasing the workpiece.

10. The inverted ultrasonic welding equipment for cosmetic bottles according to claim 1, characterized in that, It also includes a pressure sensing device, the pressure measuring end of which is inserted into the workpiece through the sealed conduit (423) to detect the internal pressure of the workpiece.

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