Special ultrasonic die for punching and welding semipermeable membrane

Abstract

The utility model relates to the technical field of semi-permeable membrane punching and welding dies, and discloses a special ultrasonic die for semi-permeable membrane punching and welding, which comprises an ultrasonic welding head and a semi-permeable membrane, the ultrasonic welding head is connected with an external negative pressure structure, a punching matching shell is arranged on the outer surface of the ultrasonic welding head, and the semi-permeable membrane is arranged in the punching matching shell. A punching module is arranged in the punching matching shell, an inner cavity of the punching module is movably connected with the outer surface of the ultrasonic welding head, the punching matching shell is movably connected with the punching module and the semi-permeable membrane, and a feeding roller is arranged on the punching matching shell; a plastic workpiece is arranged under the ultrasonic welding head, a negative pressure hole is formed in the ultrasonic welding head, and an opening in one end of the negative pressure hole is connected with an external negative pressure structure. According to the semi-permeable membrane welding device, it can be guaranteed that the position of a semi-permeable membrane cannot deviate in the punching, transporting, positioning and welding processes of the semi-permeable membrane, and stable and excellent welding quality can be guaranteed.

Description

Technical Field

[0001] The utility model relates to the technical field of semi-permeable membrane punching and welding molds, and particularly relates to a special ultrasonic mold for semi-permeable membrane punching and welding. Background Technique

[0002] The special ultrasonic mold for punching and welding refers to an ultrasonic welding head that integrates punching and welding, and a punching module used in pair with it. Its working principle is to utilize the action of ultrasonic vibration to transmit mechanical vibration of a certain frequency to the cutting edge, vibrate the material at the contact between the cutting edge and the workpiece, and cut it off with the help of part of the vibration energy to achieve precise punching and welding.

[0003] Traditional ultrasonic diaphragm welding is divided into four steps: 1) Cut the semi-permeable membrane roll material into circular membranes with a punching device;

[0004] 2) Then paste the cut circular membrane onto the plastic tape, and then curl the plastic tape with the membrane onto a hollow reel;

[0005] 3) When welding is required, peel the circular membrane from the plastic tape, move the circular membrane and pre-install it on the plastic workpiece;

[0006] 4) Then move the pre-installed plastic workpiece to the ultrasonic welding station for ultrasonic welding; and the traditional semi-permeable membrane punching and welding mold needs to be equipped with multiple devices with different functions, resulting in a large investment cost. The inventor found during the actual welding process that there is a problem that the semi-permeable membrane and the hole cannot be centered during welding. Therefore, we propose a special ultrasonic mold for semi-permeable membrane punching and welding. Content of the Utility Model

[0007] (1) Technical Problem to be Solved

[0008] Aiming at the deficiencies of the prior art, the utility model provides a special ultrasonic mold for semi-permeable membrane punching and welding, which has the advantages of ensuring that the position of the semi-permeable membrane will not shift during the processes of punching, transportation, positioning and welding, and solves the problem that the semi-permeable membrane and the hole cannot be centered during welding.

[0009] (2) Technical Solution

[0010] To achieve the above object of ensuring that the position of the semi-permeable membrane does not shift during the processes of punching, transportation, positioning, and welding, the present utility model provides the following technical solution: A special ultrasonic mold for punching and welding semi-permeable membranes, including an ultrasonic welding head and a semi-permeable membrane. The ultrasonic welding head is connected to an external negative pressure structure. An punching and matching housing is arranged on the outer surface of the ultrasonic welding head. An punching module is arranged inside the punching and matching housing. The inner cavity of the punching module is movably connected to the outer surface of the ultrasonic welding head. The punching and matching housing and the punching module are movably connected to the semi-permeable membrane. Feeding rollers are arranged on the punching and matching housing. A plastic workpiece is arranged directly below the ultrasonic welding head, so as to ensure that the position of the semi-permeable membrane does not shift during the processes of punching, transportation, positioning, and welding, and can also ensure stable and excellent welding quality.

[0011] As a preferred technical solution of the present utility model, a negative pressure hole is opened inside the ultrasonic welding head. One end opening of the negative pressure hole is connected to an external negative pressure structure. A lower through hole is opened inside the bottom end of the ultrasonic welding head. The lower through holes are arranged in a circumferential array, and the inner cavity of the lower through hole is communicated with the inner cavity of the negative pressure hole, so as to transport the membrane sheet by using negative pressure.

[0012] As a preferred technical solution of the present utility model, the outer surface diameter of the upper part of the ultrasonic welding head is larger than the outer surface diameters of the middle part and the lower part, and the outer surface diameter of the middle part of the ultrasonic welding head is smaller than the outer surface diameter of the lower part.

[0013] As a preferred technical solution of the present utility model, the outer surface diameter and size of the ultrasonic welding head are in accordance with the inner cavity diameters and sizes of the punching and matching housing and the punching module. The ultrasonic welding head, the punching and matching housing, and the punching module need to be processed in pairs, and the machining tolerance dimensions are strictly controlled to ensure a reasonable assembly fit clearance among the three, so as to avoid the phenomena of incomplete cutting and burrs when punching the semi-permeable membrane.

[0014] As a preferred technical solution of the present utility model, the ultrasonic welding head is made of a material of powder metallurgy steel. The ultrasonic welding head made of a material of powder metallurgy steel can not only meet the ultrasonic use characteristics, but also meet the sharpness characteristics and wear resistance during punching.

[0015] As a preferred technical solution of the present utility model, the outer surface diameter and size of the punching and matching housing are in accordance with the outer surface diameter and size of the punching module, so as to ensure that the punching and matching housing and the punching module are more fitted during assembly.

[0016] As a preferred technical solution of the present utility model, the punching module is made of a material of hard alloy steel. By using the characteristics of wear resistance and high hardness of the material, good cutting quality can be satisfied.

[0017] As a preferred technical solution of the present utility model, a hole is provided inside the top end of the plastic workpiece to facilitate the accurate descent of the diaphragm after stamping onto the hole.

[0018] (III) Beneficial effects

[0019] Compared with the prior art, the present utility model provides a special ultrasonic mold for punching and welding semi-permeable membranes, having the following beneficial effects:

[0020] For this special ultrasonic mold for punching and welding semi-permeable membranes, the semi-permeable membrane is directly fed under the ultrasonic welding head by using the feeding roller, and the semi-permeable membrane is located under the punching module. Then, the external negative pressure structure is activated, and at the same time, the ultrasonic welding head descends. At this time, the ultrasonic welding head cooperates with the punching module to cut out a diaphragm with the required diameter size. The diaphragm cut by the ultrasonic welding head is adsorbed at the bottom end of the ultrasonic welding head and accurately descends onto the hole on the plastic workpiece. Then, the external negative pressure structure is closed, and the ultrasonic welding head welds the diaphragm until the welding is completed. At the same time, the ultrasonic welding head returns to its original position. During the entire process of punching, transporting, positioning, and welding of the semi-permeable membrane, its position will not shift at all, so as to ensure the centering of the relative position between the diaphragm and the hole. The good and reasonable design of the ultrasonic welding head and the punching module can ensure stable and excellent welding quality, and can shorten the time of the entire process and improve production efficiency. Thus, it can ensure that during the punching, transporting, positioning, and welding of the semi-permeable membrane, its position will not shift, and further ensure stable and excellent welding quality. Description of the drawings

[0021] Figure 1 It is a three-dimensional schematic diagram of the ultrasonic welding head of the present utility model;

[0022] Figure 2 It is a schematic diagram of the semi-permeable membrane to be punched of the present utility model;

[0023] Figure 3 It is a schematic diagram of the semi-permeable membrane in the punching state of the present utility model;

[0024] Figure 4 It is a schematic diagram of the semi-permeable membrane in the welding state of the present utility model;

[0025] Figure 5 It is a schematic diagram of the semi-permeable membrane in the reset state after the welding is completed of the present utility model.

[0026] In the figure: 1. Ultrasonic welding head; 11. Negative pressure hole; 12. Lower through hole; 2. Punching supporting housing; 3. Punching module; 4. Feeding roller; 5. Semi-permeable membrane; 6. Plastic workpiece. Detailed implementation manners

[0027] To make the above objects, features, and advantages of the present utility model more apparent and understandable, the following provides a detailed description of the specific embodiments of the present utility model in conjunction with the accompanying drawings of the specification.

[0028] Referring to Figures 1-5 , a special ultrasonic mold for punching and welding a semi-permeable membrane is provided, including an ultrasonic welding head 1 and a semi-permeable membrane 5. The ultrasonic welding head 1 is connected to an external negative pressure structure. A punching and cutting supporting housing 2 is provided on the outer surface of the ultrasonic welding head 1. A punching and cutting module 3 is provided inside the punching and cutting supporting housing 2. The inner cavity of the punching and cutting module 3 is movably connected to the outer surface of the ultrasonic welding head 1. The punching and cutting supporting housing 2 and the punching and cutting module 3 are movably connected to the semi-permeable membrane 5. A feeding roller 4 is provided on the punching and cutting supporting housing 2. A plastic workpiece 6 is provided directly below the ultrasonic welding head 1.

[0029] A negative pressure hole 11 is opened inside the ultrasonic welding head 1. One end opening of the negative pressure hole 11 is connected to an external negative pressure structure. A lower through hole 12 is opened inside the bottom end of the ultrasonic welding head 1. The lower through holes 12 are arranged in a circumferential array, and the inner cavity of the lower through holes 12 is communicated with the inner cavity of the negative pressure hole 11.

[0030] The outer surface diameter of the upper part of the ultrasonic welding head 1 is larger than the outer surface diameters of the middle part and the lower part. The outer surface diameter of the middle part of the ultrasonic welding head 1 is smaller than the outer surface diameter of the lower part.

[0031] The outer surface diameter and size of the ultrasonic welding head 1 are in good agreement with the inner cavity diameters and sizes of the punching and cutting supporting housing 2 and the punching and cutting module 3. The ultrasonic welding head 1, the punching and cutting supporting housing 2, and the punching and cutting module 3 need to be paired and processed, strictly controlling the processing tolerance dimensions to ensure a reasonable assembly fit clearance among the three, and avoiding phenomena such as incomplete cutting and burrs when punching the semi-permeable membrane 5.

[0032] The ultrasonic welding head 1 is made of a material of powder metallurgy steel. The ultrasonic welding head 1 made of a material of powder metallurgy steel can not only meet the ultrasonic use characteristics but also meet the sharpness characteristics and wear resistance during punching.

[0033] The outer surface diameter and size of the punching and cutting supporting housing 2 are in good agreement with the outer surface diameters and sizes of the punching and cutting module 3.

[0034] The punching and cutting module 3 is made of a material of hard alloy steel. By utilizing the wear resistance and high hardness characteristics of the material, good cutting quality can be satisfied.

[0035] A hole is opened inside the top end of the plastic workpiece 6 to facilitate the accurate descent of the punched membrane onto the hole.

[0036] Working principle: The semi-permeable membrane 5 is directly sent under the ultrasonic welding head 1 by using the feeding roller 4, and the semi-permeable membrane 5 is located under the punching module 3. Then, the peripheral negative pressure structure is started, and at the same time, the ultrasonic welding head 1 descends. At this time, the ultrasonic welding head 1 cooperates with the punching module 3 to cut out a diaphragm with the required diameter size. The diaphragm cut by the ultrasonic welding head 1 is adsorbed at the bottom end of the ultrasonic welding head 1 and accurately descends onto the hole on the plastic workpiece 6. Then, the peripheral negative pressure structure is closed, and the ultrasonic welding head 1 welds the diaphragm until the welding is completed. At the same time, the ultrasonic welding head 1 returns to its original position. During the entire process of punching, transporting, positioning, and welding of the semi-permeable membrane 5, its position will not shift at all, so as to ensure the centering of the relative position between the diaphragm and the hole. The good and reasonable design of the ultrasonic welding head 1 and the punching module 3 can ensure stable and excellent welding quality, and can shorten the time of the entire process and improve production efficiency. Thus, it can ensure that during the punching, transporting, positioning, and welding of the semi-permeable membrane 5, its position will not shift, and further ensure stable and excellent welding quality. This device can not only ensure that during the punching, transporting, positioning, and welding of the semi-permeable membrane 5, its position will not shift, but also ensure stable and excellent welding quality.

[0037] It should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention and are not intended to limit them. Although the present invention has been described in detail with reference to the preferred embodiments, those of ordinary skill in the art should understand that the technical solutions of the present invention can be modified or equivalently replaced without departing from the spirit and scope of the technical solutions of the present invention, and they should all be covered by the scope of the claims of the present invention.

Claims

1. An ultrasonic mold dedicated to punching and welding of semi-permeable membranes, characterized in that: It includes an ultrasonic welding head (1) and a semi-permeable membrane (5). The ultrasonic welding head (1) is connected to an external negative pressure structure. An punching and matching housing (2) is arranged on the outer surface of the ultrasonic welding head (1). A punching module (3) is arranged inside the punching and matching housing (2). The inner cavity of the punching module (3) is movably connected to the outer surface of the ultrasonic welding head (1). The punching and matching housing (2) and the punching module (3) are movably connected to the semi-permeable membrane (5). A feeding roller (4) is arranged on the punching and matching housing (2). A plastic workpiece (6) is arranged directly below the ultrasonic welding head (1).

2. The special ultrasonic mold for punching and welding of semi-permeable membranes according to claim 1, characterized in that: A negative pressure hole (11) is formed inside the ultrasonic welding head (1). One end opening of the negative pressure hole (11) is connected to an external negative pressure structure. A lower through hole (12) is formed inside the bottom end of the ultrasonic welding head (1). The lower through holes (12) are arranged in a circumferential array, and the inner cavity of the lower through hole (12) is communicated with the inner cavity of the negative pressure hole (11).

3. The special ultrasonic mold for punching and welding semi-permeable membranes according to claim 2, characterized in that: The outer surface diameter of the upper part of the ultrasonic welding head (1) is larger than the outer surface diameters of the middle part and the lower part. The outer surface diameter of the middle part of the ultrasonic welding head (1) is smaller than the outer surface diameter of the lower part.

4. The ultrasonic mold dedicated to punching and welding of a semi-permeable membrane according to claim 1, characterized in that: The outer surface diameter and size of the ultrasonic welding head (1) are all in conformity with the inner cavity diameters and sizes of the punching and matching housing (2) and the punching module (3).

5. The ultrasonic mold dedicated to punching and welding of semi-permeable membranes according to claim 4, characterized in that: The ultrasonic welding head (1) is made of a material such as powder metallurgy steel.

6. The ultrasonic mold special for punching and welding of semi-permeable membranes according to claim 1, wherein: The outer surface diameter and size of the punching and matching housing (2) are all in conformity with the outer surface diameter and size of the punching module (3).

7. A special ultrasonic mold for punching and welding semi-permeable membranes according to claim 6, characterized in that: The punching module (3) is made of a material of hard alloy steel.

8. A special ultrasonic mold for punching and welding of semi-permeable membranes according to claim 1, characterized in that: A hole is formed inside the top end of the plastic workpiece (6).

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