A carousel type ultrasonic welding apparatus

Abstract

The application discloses a rotary table type ultrasonic welding device, which comprises a rack, a rotary table, a supporting device and an ultrasonic welding device arranged on the periphery of the rotary table. The rotary table is rotatably installed on the rack. The rotary table is provided with supporting bolts protruding from the bottom surface of the rotary table. The supporting device is in abutment with the supporting bolts through liftable supporting pieces. When the ultrasonic welding device is pressed for welding, the mounting seat can be supported by the supporting device, so that the rotary table is prevented from being deformed due to the pressing. The rotary table is provided with a mounting seat. The mounting seat comprises a bottom plate installed by leveling screws. The rotary table and the mounting seat can be kept horizontal through the leveling screws. The mounting seat is further provided with elastic washers. The elastic compression of the elastic washers can ensure that the workpiece can keep the airtightness of welding even if the workpiece is slightly inclined when being pressed.

Description

Technical Field

[0001] This invention relates to a cosmetic packaging production equipment, and more particularly to a rotary ultrasonic welding equipment. Background Technology

[0002] With the development of the cosmetics industry, various supporting industries for cosmetics have also emerged. Among them, the production of cosmetic packaging bottles is a very important link in the cosmetics industry and has a very broad market demand.

[0003] Cosmetic packaging is mostly made of plastic and has multiple parts that are connected by ultrasonic welding. However, most existing ultrasonic welding equipment is set up separately and the workpieces are welded manually. It is rare to integrate ultrasonic welding equipment into automated production equipment such as turntables or assembly lines. This is because the ultrasonic welding process requires the welding head to press down and apply a certain pressure to the workpiece, which requires the turntable to have a certain bearing capacity and the workpiece to be placed horizontally on the turntable without tilting.

[0004] Of course, some manufacturers on the market have already made improvements to address the above problems. For example, the rotary ultrasonic welding machine disclosed in existing technology CN110548983A uses a support structure to support the rotary table, preventing insufficient airtightness of the ultrasonic welding due to lack of support when the welding head is pressed down. However, in actual implementation, it still has significant drawbacks, such as: 1. The rotary table is directly subjected to force and is prone to deformation. To ensure the airtightness of ultrasonic welding, the pressure applied by the welding head to the rotary table is large and concentrated. After long-term use, the rotary table is prone to deformation, requiring complete replacement, which is extremely costly. 2. Lack of a leveling structure. After the rotary table deforms, the workpiece cannot be kept level when placed directly on it. This results in uneven force on the workpiece at the joint when the welding head is pressed down, thus failing to guarantee the airtightness of the ultrasonic welding. 3. Lack of mounting and fixing devices for workpieces. Some existing cosmetic bottles have irregular bottoms due to their design. These irregular bottoms can cause the workpieces to slip during ultrasonic welding due to the downward pressure, thus affecting the airtightness of the ultrasonic welding.

[0005] To address the aforementioned issues, this solution proposes a rotary ultrasonic welding device. Summary of the Invention

[0006] To address the aforementioned technical problems, embodiments of the present invention provide a rotary ultrasonic welding device, comprising: a frame, a rotary table, a support device, and ultrasonic welding equipment disposed around the rotary table.

[0007] The turntable is rotatably mounted on the frame. The turntable has a mounting through hole and a support through hole. A mounting base for fixing the workpiece is connected to the mounting through hole. A support bolt is threaded into the support through hole. The support bolt passes through the turntable and protrudes from the bottom surface of the turntable. The support bolt abuts against the bottom surface of the mounting base.

[0008] The support device is mounted on the frame and includes a support cylinder, a support slider, a support slide rail, a support platform, and a support member. The support slider is slidably mounted on the support slide rail. The upper surface of the support slider is sequentially provided with a low-level plane, a lifting slope, and a high-level plane. The support member is vertically mounted on the support platform. The support cylinder drives the support slider to slide, and the support member is lifted from the low-level plane along the lifting slope to the high-level plane.

[0009] The ultrasonic welding device is used to perform ultrasonic welding on the workpiece on the mounting base. During the downward welding process, the downward pressure generated acts on the mounting base, and at the same time, the lifted support member abuts against the support bolt to provide a supporting force to counteract the downward pressure.

[0010] The mounting base includes a base plate and a slotted seat. The base plate is mounted on the mounting through hole by connecting screws. The bottom surface of the base plate abuts against the supporting bolts. The slotted seat is provided with a placement slot for placing and fixing workpieces. The slotted seat is detachably mounted on top of the base plate.

[0011] The slotted seat includes a first clamp, a second clamp, a first mating member, and a second mating member. The first clamp and the second clamp engage with each other to form a clamping slot for clamping the workpiece. The first mating member and the second mating member have clamping grooves, and the first clamp and the second clamp are respectively disposed in the clamping grooves of the first mating member and the second mating member. A clamping spring is provided between the first mating member and the second mating member.

[0012] The turntable is fixedly equipped with a supporting device, which includes a supporting cylinder and a supporting member. The supporting cylinder drives the supporting member, causing the supporting member to press against the first mating member, and causing the first mating member to overcome the clamping spring, so that the first clamp and the second clamp can clamp each other and clamp and position the workpiece.

[0013] The turntable is provided with a leveling through hole, and the base plate is connected to the leveling through hole by a leveling screw, so that the base plate can be leveled by tightening or loosening the leveling screw.

[0014] The bottom of the slotted component is provided with a gasket groove, and an elastic gasket is inserted into the gasket groove, so that the bottom of the workpiece placed in the placement slot contacts the elastic gasket.

[0015] The ultrasonic welding device includes a welding lifting bracket, a welding lifting platform, and a welding head. The welding lifting platform is mounted on the welding lifting bracket in a liftable manner, and the welding head is connected to the welding lifting platform in a liftable manner via a welding lifting device.

[0016] The lower part of the welding lifting platform is equipped with a protective film support, on which a welding protective film is tensioned and installed, thereby protecting the workpiece during ultrasonic welding.

[0017] The system also includes an airtightness testing device, which comprises an airtightness testing bracket, an airtightness testing platform, and an airtightness testing head. The airtightness testing bracket is mounted on the frame, the airtightness testing platform is vertically connected to the airtightness testing bracket, and the airtightness testing head is vertically connected to the lower end of the airtightness testing platform via an airtightness lifting cylinder. This allows for airtightness testing of the ultrasonically welded workpiece.

[0018] The device also includes a feeding device, which comprises a feeding bracket, a feeding lifting platform, and feeding grippers. The feeding lifting platform is movably mounted on the feeding bracket, and the feeding grippers are movably mounted on the feeding lifting platform. The feeding grippers can then move to grab the workpiece from the mounting base and perform the feeding process.

[0019] Implementing the embodiments of the present invention has the following beneficial effects: 1. By using a support device to abut the support bolts, when the turntable is ultrasonically welded, the downward pressure acts on the support bolts and is transmitted to the mounting base, preventing the turntable from deforming due to the abutment force. Even if the support bolts wear out, they can be easily and cost-effectively replaced. 2. The mounting base is connected to the turntable by four connecting screws, allowing the downward pressure of the welding head to be distributed across the connecting screws, thus making the force on the mounting base more even. 3. The mounting base can be leveled by adjusting the height of each leveling screw, preventing the mounting base from tilting and affecting the airtightness of the workpiece during welding head pressing and ultrasonic welding. 4. By setting elastic shims on the mounting base, the workpiece has a certain amount of elastic downward pressure when pressed, ensuring the airtightness of ultrasonic welding even if the workpiece tilts at a certain angle due to placement. 5. The mounting base uses the first clamp, the second clamp, and the abutment device to fix and hold the workpiece, so that even irregular workpieces can be firmly clamped, ensuring the effect of ultrasonic welding. Attached Figure Description

[0020] Figure 1 This is a three-dimensional schematic diagram of Embodiment 1 of the present invention;

[0021] Figure 2 This is a schematic diagram of the turntable in Embodiment 1 of the present invention;

[0022] Figure 3 This is a schematic diagram of the mounting base according to Embodiment 1 of the present invention;

[0023] Figure 4 This is a side view of the support device according to Embodiment 1 of the present invention;

[0024] Figure 5 This is a schematic diagram of the support device according to Embodiment 1 of the present invention;

[0025] Figure 6 This is a schematic diagram of the ultrasonic welding apparatus of Embodiment 1 of the present invention;

[0026] Figure 7 This is a schematic diagram of the airtightness detection device according to Embodiment 1 of the present invention;

[0027] Figure 8 This is a schematic diagram of the feeding device according to Embodiment 1 of the present invention;

[0028] Figure 9 This is a schematic diagram of the turntable and the abutting device in Embodiment 2 of the present invention;

[0029] Figure 10 This is a schematic diagram of the slotted seat component according to Embodiment 2 of the present invention. Detailed Implementation

[0030] 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.

[0031] It should be stated in advance that the term "workpiece" in this embodiment refers to two components collectively. Specifically, it can be the bottle body of a cosmetic packaging bottle and the bottle opening or cap connected to the bottle body. Taking this embodiment as an example, the bottle body is placed on the mounting base, and the bottle cap or bottle opening is placed on the bottle body, followed by ultrasonic welding. Since the shape, location, type, quantity, etc. of the workpiece are not within the scope of protection of this solution, they are collectively referred to as workpieces. Specifically, it only needs to be a component that can be connected by ultrasonic welding, and this solution is not limited to this.

[0032] Example 1

[0033] like Figure 1 As shown, a rotary ultrasonic welding device includes: a frame 1, a rotary table 2, a support device 3, and an ultrasonic welding device 4 disposed around the rotary table 2.

[0034] like Figure 2 As shown, the turntable 2 is rotatably mounted on the frame 1. The turntable 2 is provided with a mounting through hole 21 and a support through hole 22. A mounting base 23 for fixing the workpiece is connected to the mounting through hole 21. A support bolt 24 is threadedly connected to the support through hole 22. The support bolt 24 passes through the turntable 2 and protrudes from the bottom surface of the turntable 2. The support bolt 24 abuts against the bottom surface of the mounting base 23.

[0035] like Figure 3 As shown, the mounting base 23 includes a base plate 231 and a slotted seat 232. The base plate 231 is mounted on the mounting through hole 21 by connecting screws. The upper end face of the support bolt 24 abuts against the bottom surface of the base plate 231. The slotted seat 232 is provided with a placement slot 2321 for placing and fixing workpieces. The slotted seat 232 is detachably mounted above the base plate 231.

[0036] The base plate 231 is mounted on the turntable 2 by four connecting screws. When the ultrasonic welding device 4 presses down to weld, its downward pressure will act on the mounting base 23 along the workpiece and be dispersed by the four connecting screws to avoid excessive concentration of downward pressure and to make the force evenly applied to the entire contact surface of the base plate 231.

[0037] Specifically, the turntable is provided with a leveling through hole 25, and the base plate 231 is connected to the leveling through hole 25 by a leveling screw, so that the base plate 231 can be leveled by tightening or loosening the leveling screw.

[0038] Before the equipment is put into operation, the base plate 231 can be leveled by adjusting the leveling screws to avoid the mounting base 23 being placed unevenly due to external wear or deformation of the turntable 2 under long-term use. This would prevent the workpiece from being placed unevenly during ultrasonic welding, resulting in uneven stress at the joint of the ultrasonic welding and insufficient air tightness.

[0039] The bottom of the slot seat 232 is provided with a gasket groove 2326, and an elastic gasket is inserted into the gasket groove 2326, so that the bottom of the workpiece placed in the placement slot 2321 contacts the elastic gasket.

[0040] In this embodiment, the elastic gasket is a rubber strip made of rubber material, which is inserted into the gasket groove 2326. When ultrasonic welding is performed, its downward pressure is applied to the workpiece and the elastic gasket. This arrangement ensures that even if the workpiece is tilted to a certain extent, the elasticity of the elastic gasket can prevent the problem of insufficient air tightness at the bottle cap of the workpiece during ultrasonic welding.

[0041] like Figure 4 , Figure 5As shown, the support device 3 is mounted on the frame 1 and corresponds to the position of the ultrasonic welding device 4. The support device 3 includes: a support cylinder 31, a support slider 32, a support slide rail 33, a support platform, and a support member 34. The support slider 32 is slidably mounted on the support slide rail 33. The upper surface of the support slider 32 is sequentially provided with a low plane 321, a lifting slope 322, and a high plane 323. The support member 34 is vertically mounted on the support platform. The support cylinder 31 drives the support slider 32 to slide, and the support member 34 is lifted from the low plane 321 along the lifting slope 322 to the high plane 323, causing the support member 34 to be pushed upward and reach the support bolt 24.

[0042] like Figure 6 As shown, the ultrasonic welding device 4 includes: a welding lifting bracket 41, a welding lifting platform 42, and a welding head 43. The welding lifting platform 42 is mounted on the welding lifting bracket 41 in a liftable manner, and the welding head 43 is connected to the welding lifting platform 42 in a liftable manner through a welding lifting device 431.

[0043] The lower part of the welding lifting platform 42 is provided with a protective film bracket 44, on which a welding protective film is tensioned and installed, thereby protecting the workpiece during ultrasonic welding.

[0044] Specifically, the welding lifting device 431 is a servo motor. Compared with the ultrasonic welding device driven by a cylinder, the servo ultrasonic device can better control the downward stroke of the welding head, making the downward stroke of each welding tend to be stable. In addition, with the structure of the turntable, support device and mounting base of this solution, the stability of the finished product can be achieved during welding.

[0045] like Figure 7 As shown, the device also includes an airtightness testing device 5, which includes an airtightness testing bracket 51, an airtightness testing platform 52, and an airtightness testing head 53.

[0046] The airtightness testing bracket 51 is mounted on the frame 1. The airtightness testing platform 52 is vertically connected to the airtightness testing bracket 51. The airtightness testing head 53 is vertically connected to the lower end of the airtightness testing platform 52 via an airtightness lifting cylinder 54. Thus, the airtightness of the workpiece after ultrasonic welding can be tested through the airtightness testing head 53.

[0047] like Figure 8 As shown, the equipment also includes a feeding device 6, which includes a feeding bracket 61, a feeding lifting platform 62, and a feeding gripper 63.

[0048] The unloading lifting platform 62 is movably mounted on the unloading bracket 61, and the unloading gripper 63 is movably mounted on the unloading lifting platform 62. The unloading gripper 63 can move and grab the workpiece of the mounting base 23 to perform the unloading process.

[0049] Working principle:

[0050] This solution uses the structure of the support bolt 24 to cooperate with the support device 3, which not only prevents the turntable 2 from directly contacting the support bolt 24 and deforming under pressure, but also ensures that the mounting base 23 is set on the turntable 2 by four connecting screws. When the welding head is pressed down, the downward pressure is distributed along the workpiece, the elastic pad, the mounting base 23 and through the connecting screws, making the force more uniform.

[0051] Secondly, the mounting base 23 is installed using leveling screws, allowing its levelness to be adjusted by loosening or loosening the four corner screws, ensuring that multiple mounting bases are at the same height and level. Additionally, the use of elastic washers prevents slight tilting of the workpiece during placement, which could lead to uneven stress at the joints during pressing and affect airtightness.

[0052] This solution ensures the support and leveling effect of the workpiece during downward welding by adjusting the leveling screw and using elastic shims, thereby improving the yield rate. At the same time, compared with the traditional solution where the turntable 2 is in direct contact with the support structure 3, this solution only requires replacing the support bolt 24 when it wears out, resulting in lower maintenance costs.

[0053] Example 2

[0054] This embodiment mainly discloses a structure of mounting base 23 based on embodiment 1, which is used to enable the mounting base to clamp and fix workpieces with uneven bottoms, so that the bottle body will not tilt due to downward pressure during the ultrasonic welding process.

[0055] like Figure 9 As shown, the slotted seat 232 includes: a first clamp 2322, a second clamp 2323, a first mating member 2324 and a second mating member 2325, and the opposite end faces of the first clamp 2322 and the second clamp 2323 each have a clamping groove for clamping the workpiece.

[0056] The first mating member 2324 and the second mating member 2325 have clamping grooves. The first clamp 2322 and the second clamp 2323 are respectively disposed in the clamping grooves of the first mating member 2324 and the second mating member 2325. The opposite end faces of the first mating member 2324 and the second mating member 2325 abut against the first clamp 2322 and the second clamp 2323 respectively. The opposite end faces of the first mating member 2324 and the second mating member 2325 are connected by clamping springs.

[0057] like Figure 10 As shown, a supporting device 26 is fixedly provided above the turntable 2. The supporting device 26 includes a supporting cylinder 261 and a supporting component 262.

[0058] The abutting cylinder 261 drives the abutting member 262, causing the abutting member 262 to press against the first mating member, and causing the first mating member to overcome the clamping spring and cause the first clamp 2322 and the second clamp 2323 to clamp each other and clamp and position the workpiece.

[0059] The frame 1 is equipped with a drive motor that drives the turntable 2 to rotate. The drive motor is connected to the turntable 2 through a cam divider. The cam divider is a common device in the mechanical field, so its specific structure will not be described again.

[0060] Specifically, the cam divider has a stationary flange and a dynamic flange. The turntable 2 and the dynamic flange are connected by a transmission and can be driven by a drive motor to rotate. The abutting device 26 is set on the stationary flange and is installed above the turntable. It is fixed and will not rotate with the rotation of the turntable.

[0061] It should be noted that the abutting cylinder 261 and the abutting component 262 are oriented towards the mounting base 23 located below the ultrasonic welding device 4, thereby enabling the workpiece to be clamped and positioned before ultrasonic welding.

[0062] When the bottom of the workpiece is uneven or the workpiece is irregularly shaped, the workpiece can be placed between the first clamp 2322 and the second clamp 2323. At this time, the workpiece itself is clamped against the force of the clamping spring. At the same time, the abutting cylinder 261 drives the abutting member 262. The abutting member 262 abuts against the side of the first mating member 2324 and pushes it so that the first mating member 2324 clamps and mates with the second mating member 2325, and the workpiece is fully and firmly positioned.

[0063] It should be noted that, in order to avoid the workpiece being pushed by the abutment device 26 and thus damaged, the clamping grooves of the first clamp 2322 and the second clamp 2323 in this embodiment are padded with soft molten cloth.

[0064] 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. A rotary ultrasonic welding device, characterized in that, include: The frame (1), turntable (2), support device (3) and ultrasonic welding device (4) arranged around the turntable (2); The turntable (2) is rotatably mounted on the frame (1). The turntable (2) is provided with a mounting through hole (21) and a support through hole (22). A mounting seat (23) for fixing the workpiece is connected to the mounting through hole (21). The mounting seat (23) includes a base plate (231) and a slotted seat (232). The base plate (231) is mounted on the mounting through hole (21) by connecting screws. The support through hole (22) is connected to a support bolt (24) by threads. The support bolt (24) passes through the turntable (2) and protrudes from the bottom surface of the turntable (2). The support bolt (24) abuts against the bottom surface of the base plate (231). The turntable (2) is provided with a leveling through hole (25). The base plate (231) is connected to the leveling through hole (25) by leveling screws. The base plate (231) is then leveled by tightening or loosening the leveling screws. The support device (3) is mounted on the frame (1) and corresponds to the position of the ultrasonic welding device (4). The support device (3) includes: a support cylinder (31), a support slider (32), a support slide rail (33), a support platform, and a support member (34). The support slider (32) is slidably mounted on the support slide rail (33). The upper surface of the support slider (32) is provided with a low plane (321), a lifting slope (322), and a high plane (323) in sequence. The support member (34) is mounted on the support platform in a lifting manner. The support cylinder (31) drives the support slider (32) to slide. The support member (34) is lifted from the low plane (321) along the lifting slope (322) to the high plane (323). The ultrasonic welding device (4) is used to perform ultrasonic welding on the workpiece on the mounting base (23). During the downward welding process, the downward pressure generated acts on the mounting base (23), and at the same time, the support member (34) is lifted and abuts against the support bolt (24), and the mounting base (23) is supported by the support bolt (24) to counteract the downward pressure generated during ultrasonic welding.

2. The rotary ultrasonic welding equipment according to claim 1, characterized in that, The slotted seat (232) is provided with a placement slot (2321) for placing and fixing workpieces, and the slotted seat (232) is detachably installed above the base plate (231).

3. The rotary ultrasonic welding equipment according to claim 2, characterized in that, The slotted seat (232) includes: a first clamp (2322), a second clamp (2323), a first mating part (2324), and a second mating part (2325), wherein the first clamp (2322) and the second clamp (2323) are mated together to form a clamping slot for clamping the workpiece; The first mating member (2324) and the second mating member (2325) have clamping grooves, the first clamp (2322) and the second clamp (2323) are respectively disposed in the clamping grooves of the first mating member (2324) and the second mating member (2325), and a clamping spring is provided between the first mating member (2324) and the second mating member (2325).

4. The rotary ultrasonic welding equipment according to claim 3, characterized in that, A push-off device (26) is fixedly provided above the turntable (2). The push-off device (26) includes a push-off cylinder (261) and a push-off component (262). The abutting cylinder (261) drives the abutting member (262) to press against the first mating member (2324), so that the first mating member (2324) overcomes the clamping spring and causes the first clamp (2322) and the second clamp (2323) to clamp each other and clamp and position the workpiece.

5. A rotary ultrasonic welding device according to claim 2, characterized in that, The bottom of the slotted seat (232) is provided with a gasket groove (2326), and an elastic gasket is inserted into the gasket groove (2326), so that the bottom of the workpiece placed in the placement slot (2321) contacts the elastic gasket.

6. The rotary ultrasonic welding equipment according to claim 1, characterized in that, The ultrasonic welding device (4) includes: a welding lifting bracket (41), a welding lifting platform (42), and a welding head (43). The welding lifting platform (42) is mounted on the welding lifting bracket (41) in a liftable manner, and the welding head (43) is connected to the welding lifting platform (42) in a liftable manner through a welding lifting device (431).

7. A rotary ultrasonic welding device according to claim 6, characterized in that, The lower part of the welding lifting platform (42) is provided with a protective film bracket (44), on which a welding protective film is tensioned and installed, thereby protecting the workpiece during ultrasonic welding.

8. A rotary ultrasonic welding device according to claim 1, characterized in that, It also includes an airtightness testing device (5), which includes: an airtightness testing bracket (51), an airtightness testing platform (52), and an airtightness testing head (53). The airtightness testing bracket (51) is mounted on the frame (1), the airtightness testing platform (52) is vertically connected to the airtightness testing bracket (51), and the airtightness testing head (53) is vertically connected to the lower end of the airtightness testing platform (52) via an airtightness lifting cylinder (54), so that the airtightness of the workpiece after ultrasonic welding can be tested by the airtightness testing head (53).

9. A rotary ultrasonic welding device according to claim 1, characterized in that, It also includes a feeding device (6), which includes: a feeding bracket (61), a feeding lifting platform (62), and a feeding gripper (63). The unloading lifting platform (62) is mounted on the unloading bracket (61) in a height-adjustable manner. The unloading gripper (63) is movably mounted on the unloading lifting platform (62). The unloading gripper (63) can then move and grab the workpiece from the mounting base (23) and perform the unloading process.

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