Ultrasonic welding and cutting equipment for side seal

Abstract

The utility model relates to the technical field of paper diaper production, in particular to side seal ultrasonic welding and cutting equipment, which comprises a mounting base, a rotating roller, an ultrasonic component and a cutting mechanism, and the bottom of the rotating roller is rotatably connected to the side wall of the mounting base; a plurality of groups of cutting mechanisms are uniformly arranged on the circumferential side wall of the rotating roller, each cutting mechanism comprises a circular knife, an axial movement mechanism and a radial movement mechanism, the axial movement mechanisms are fixed on the side wall of the rotating roller, the radial movement mechanisms are fixed on the axial movement mechanisms, the circular knives are arranged on the radial movement mechanisms, each circular knife comprises a knife edge, a knife head and a knife body, and each knife body is a disc; the upper surface of the tool bit is inclined, an acute angle theta is formed between the upper surface of the tool bit and the lower surface of the tool bit, and the lower surface of the tool bit is parallel to the lower surface of the tool body; a plurality of groups of ultrasonic assemblies are arranged on the circumferential side wall of the end part of the rotating roller. The utility model provides side seal ultrasonic welding and cutting equipment which can solve the problem that in the prior art, welding and cutting equipment is poor in durability.

Description

Technical Field

[0001] The utility model relates to the technical field of diaper production, in particular to side-sealing ultrasonic welding and cutting equipment. Background Art

[0002] The leak-proof side edges of diapers are also called side leak-proof guards or side seals. They are the pleats that stand up on the inner thighs, which can effectively prevent excrement from leaking out through the gap between the thighs and diapers.

[0003] At present, ultrasonic welding and cutting technology is generally used in the production process of diaper side seals. As shown in the prior art, publication number: CN116869741A discloses an ultrasonic waist seal sealing and cutting integrated assembly, which utilizes a welding die (circular knife) in conjunction with an ultrasonic component to achieve welding and cutting of waist seals, side seals and other materials.

[0004] The cutting principle in the prior art is that the side sealing material is rolled up and placed on a reel, the reel is rotated and fixed on a frame, and then the side sealing material is pulled and stretched on the roller shaft, and one side of the side sealing material on the roller shaft is cut by a blade, and then it continues to be conveyed forward. However, the inventors have found in actual production that the prior art still has the following technical problems:

[0005] 1. If Figure 1 As shown, the blade of the circular knife in the prior art adopts a circular blade design, and the blade is easily worn, resulting in poor durability of the circular knife, and the knife needs to be frequently replaced in a short period of time, which increases production costs and reduces production efficiency;

[0006] 2. In order to ensure the cutting effect, the upper and lower edges of the circular knife in the prior art are inclined, and the cutter head needs to be double-sided cut and polished during maintenance, resulting in high maintenance costs. Utility Model Content

[0007] The utility model provides side seal ultrasonic welding and cutting equipment, which can solve the problem of poor durability of welding and cutting equipment in the prior art.

[0008] The present application provides the following technical solutions: side-sealing ultrasonic welding and cutting equipment, including an ultrasonic component and a cutting mechanism, the ultrasonic component is arranged at the end of the cutting mechanism; the cutting mechanism includes a circular knife and a moving mechanism, the circular knife is arranged on the moving mechanism, the circular knife includes a blade, a knife head and a knife body, the knife body is a disc, the knife head protrudes from the circumference of the knife body disc and the upper surface of the knife head is inclined, the upper surface of the knife head and the lower surface of the knife head form an acute angle θ, and the lower surface of the knife head is parallel to the lower surface of the disc; multiple groups of ultrasonic components are arranged on the circumferential side wall of the end of the roller.

[0009] Beneficial effects:

[0010] 1. The blade protrudes from the blade body and the upper surface of the blade is inclined. The upper surface of the blade and the lower surface of the blade form an acute angle θ, and the lower surface of the blade is parallel to the lower surface of the blade. This reduces the overall thickness of the blade, increases the area of ​​the blade that can be polished, increases the number of times it can be used after polishing, and improves its service life. For example, under the same blade thickness, the tool before the improvement cannot be used after 2-3 polishings, but after the improved technology, it can be used after more than 3 polishings.

[0011] 2. The upper surface of the cutter head and the lower surface of the cutter head form a certain acute angle θ, and the lower surface of the cutter head is parallel to the lower surface of the blade. When repairing the tool, compared with the prior art, which requires grinding both sides of the cutter head to a specific angle, the utility model only needs to grind the upper surface of the cutter head so that the upper surface of the cutter head and the lower surface of the cutter head form a certain acute angle θ, which reduces the difficulty of repair and saves repair costs.

[0012] 3. The ultrasonic component and the cutting mechanism cooperate to realize ultrasonic welding and cutting of the side sealing material.

[0013] Furthermore, the transition between the upper surface and the lower surface of the cutter head is a cutting edge, and the cutting edge surface is perpendicular to the lower surface of the cutter head.

[0014] Beneficial effect: The transition between the upper and lower surfaces of the cutter head is provided with a blade and the blade surface is made perpendicular to the lower surface of the cutter head, so that after the blade is worn, the cutter head has more length that can continue to be used for cutting. Specifically, compared with the round blade in the prior art, the flat blade on the cutter head can increase the blade replacement time from 1 day to 7 days without stopping the equipment, thereby extending the service life of the blade and improving its durability.

[0015] Furthermore, the blade thickness is 0.15-0.4 mm.

[0016] Beneficial effects: When the blade thickness is less than 0.15 mm, the blade wear will be aggravated and it is easy to break. When the blade thickness is greater than 0.4 mm, the blade cannot cut the side sealing material.

[0017] Furthermore, the lower surface of the blade head is spaced a certain distance from the lower surface of the blade body.

[0018] Beneficial effect: the blade on the cutter head is directly opposite to the center of the blade body, so that the blade has sufficient structural strength when cutting, and the thickness of the cutter head is reduced by utilizing a certain distance between the lower surfaces of the blade body, so that the length of the part of the cutter head that can be used for cutting is longer after the blade is worn.

[0019] Furthermore, the acute angle θ is 25°-35°.

[0020] Beneficial effect: The acute angle θ of 25°-35° can facilitate tool repair and can also make the blade of the transition section between the upper surface of the tool head and the lower surface of the tool head sharp and stable enough, thereby improving the durability of the tool.

[0021] Furthermore, the motion mechanism includes a sliding base, on which an electric cylinder and a lever mechanism are arranged, the lever mechanism includes a supporting base and a lever, the supporting base is fixed on the sliding base, the lever is L-shaped, the middle part of the lever is hinged on the supporting base, and the circular knife is rotatably connected to the end of the lever.

[0022] Beneficial effect: The sliding base and the lever mechanism cooperate with each other to realize the linear motion and rotation of the lever, so that the circular knife can move linearly and rise and fall. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] Figure 1 It is a cross-sectional view of a circular knife in the prior art.

[0024] Figure 2 This is a front view of the first embodiment of the side seal ultrasonic welding and cutting equipment of the utility model (the mounting plate is not shown in the figure);

[0025] Figure 3 This is a left view of the first embodiment of the side-sealing ultrasonic welding and cutting equipment of the utility model (only two cutting mechanisms are shown in the figure);

[0026] Figure 4 It is a schematic diagram of the circular knife structure of the first embodiment of the side sealing ultrasonic welding and cutting equipment of the utility model;

[0027] Figure 5 It is a side cross-sectional schematic diagram of a circular knife of the first embodiment of the side sealing ultrasonic welding and cutting equipment of the utility model;

[0028] Figure 6 It is an enlarged schematic diagram of the circular knife head A of the first embodiment of the side-sealing ultrasonic welding and cutting equipment of the utility model. DETAILED DESCRIPTION

[0029] The following is further described in detail through specific implementation methods:

[0030] The marks in the drawings of the specification include: mounting base 1, rotating roller 2, ultrasonic component 3, cutting mechanism 4, lever mechanism 41, sliding base 42, circular knife 43, blade 431, upper surface of blade 4311, lower surface of blade 4312, blade head 432, upper surface of blade head 4321, lower surface of blade head 4322, blade 433, acute angle θ5, mounting plate 6.

[0031] Embodiment 1

[0032] like Figure 2 , Figure 3As shown, the side seal ultrasonic welding and cutting equipment includes a mounting base 1, a roller 2, an ultrasonic component 3, a cutting mechanism 4, and a mounting plate 6. The mounting base 1 and the mounting plate 6 are arranged opposite to each other, and the roller 2 is rotatably connected between the mounting base 1 and the mounting plate 6. The roller 2 is driven by a synchronous belt driven by a synchronous motor installed on the mounting plate 6.

[0033] One end of the roller 2 is evenly provided with strip grooves in the circumferential direction, and the strip grooves are arranged along the axis direction of the roller 2; there are multiple ultrasonic components 3, which are arranged in the strip grooves one by one. The cutting mechanism 4 is fixed at the end of the roller 2 away from the strip groove, and there are multiple cutting mechanisms 4, which are arranged one by one with the ultrasonic components 3.

[0034] The cutting mechanism 4 includes: Figure 3 The circular knife 43 and the motion mechanism shown, the motion mechanism includes a sliding base 42, an electric cylinder is provided at the end of the sliding base 42 for driving the sliding base 42 to slide in a straight line, the electric cylinder and the lever mechanism 41 are welded and fixed on the upper surface of the sliding base 42, the lever mechanism 41 includes a supporting base and a lever, the supporting base is welded and fixed on the sliding base 42, the lever is L-shaped, the middle part of the lever is hinged on the supporting base, so that the lever can rotate around the supporting base, and the circular knife 43 is connected to the end of the lever through an axis rotation.

[0035] like Figure 4 , Figure 5 , Figure 6 As shown, the circular knife 43 includes a blade 433, a blade head 432 and a blade body 431. The blade body 431 is a disc. The blade head 432 protrudes from the circumference of the blade body 431 and the upper surface 4321 of the blade head is inclined. The upper surface 4321 of the blade head and the lower surface 4322 of the blade head form an acute angle θ5. Specifically, the acute angle θ5 can be optionally in the range of 25°-35°. However, in order to ensure the best cutting effect and the strength of the blade 433, the acute angle θ5 is set to 30°. This acute angle θ5 can ensure that the structural strength of the tool is the highest, the tool is sharp enough, and the durability is the best. The lower surface 4322 of the cutter head is parallel to the lower surface of the disc, and the lower surface 4322 of the cutter head is spaced a certain distance from the lower surface 4312 of the blade body. In this embodiment, for example, the thickness of the blade body 431 is set to 5 mm, and the thickness of the cutter head 432 is set to 3 mm, so that the cutter head and the blade body form an annular step gap, and the annular step gap is located on the side away from the upper surface of the cutter head, so that the blade 433 is located at the position with the most stable structural strength. The transition between the upper surface 4321 and the lower surface of the cutter head is the blade 433, and the surface of the blade 433 is perpendicular to the lower surface 4322 of the cutter head.

[0036] The thickness of the blade 433 is 0.15-0.4 mm. In this embodiment, the thickness of the blade 433 is selected to be 0.15 mm. When the thickness of the blade 433 is less than 0.15 mm, the wear of the blade 433 is aggravated. When the thickness of the blade 433 is greater than 0.4 mm, the cutting effect of the blade 433 is poor.

[0037] Here’s how to use it:

[0038] Processing: The side sealing material is rolled up and set on a reel, which is rotated and fixed on a frame. The side sealing material is then pulled and stretched on a rotating roller 2 so that the side sealing material fits the upper surface of an ultrasonic component 3. The ultrasonic component 3 emits ultrasonic waves to perform ultrasonic welding on the side sealing material. At the same time, a circular knife 43 cuts one side of the side sealing material on the rotating roller 2, and then the side sealing material continues to be conveyed forward.

[0039] Tool maintenance: When the thickness of the blade 433 of the circular knife 434 is worn from 0.15mm to more than 0.4mm and the cutting effect of the tool is significantly reduced, stop the machine, remove the blade, and grind the upper surface 4321 of the blade head so that the thickness of the blade 433 reaches 0.15mm, and the upper surface 4321 of the blade head and the lower surface 4322 of the blade head form an acute angle θ5 of 30°.

[0040] Such reciprocating operation can improve the durability of the tool while ensuring the ultrasonic welding of the side sealing material in the existing technology. The tool maintenance of this solution is simpler and more efficient, and the tool life is longer. Under the condition of continuous operation without stopping the machine, the use time of the circular knife 434 of this solution is increased from one day in the existing technology to seven days, which is more economical.

[0041] The above is only an embodiment of the utility model. The utility model is not limited to the field involved in this implementation case. The common knowledge such as the known specific structure and characteristics in the scheme is not described in detail here. It should be pointed out that for those skilled in the art, several deformations and improvements can be made without departing from the structure of the utility model, which should also be regarded as the protection scope of the utility model, and these will not affect the effect of the implementation of the utility model and the practicality of the patent. The scope of protection required by this application shall be based on the content of its claims, and the specific implementation methods and other records in the specification can be used to interpret the content of the claims.

Claims

1. Side seal ultrasonic welding and cutting equipment, including ultrasonic components and cutting mechanism, It is characterized in that The cutting mechanism includes a circular knife and a moving mechanism, the circular knife is arranged on the moving mechanism, the circular knife includes a blade, a knife head and a knife body, the knife body is a disc, the knife head protrudes from the circumference of the knife body disc and the upper surface of the knife head is inclined, the upper surface of the knife head and the lower surface of the knife head form an acute angle θ, the lower surface of the knife head is parallel to the lower surface of the disc, and an annular step notch is formed between the outer edge of the knife body and the knife head, and the annular step notch is located on the side away from the upper surface of the knife head; the ultrasonic components are arranged in multiple groups on the circumferential side wall of the roller end.

2. The side seal ultrasonic welding and cutting equipment according to claim 1, Features: The transition between the upper surface and the lower surface of the cutter head is a cutting edge, and the cutting edge surface is perpendicular to the lower surface of the cutter head.

3. The side seal ultrasonic welding and cutting equipment according to claim 2, Features: The blade thickness is 0.15-0.4 mm.

4. The side seal ultrasonic welding and cutting equipment according to claim 3, Features: The lower surface of the blade head is spaced a certain distance from the lower surface of the blade body.

5. The side seal ultrasonic welding and cutting equipment according to claim 4, Features: The acute angle θ is 25°-35°.

6. The side seal ultrasonic welding and cutting equipment according to claim 1, Features: The motion mechanism includes a sliding base, an electric cylinder and a lever mechanism are arranged on the sliding base, the lever mechanism includes a supporting base and a lever, the supporting base is fixed on the sliding base, the lever is L-shaped, the middle part of the lever is hinged on the supporting base, and the circular knife is rotatably connected to the end of the lever.

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