Bag sealing auxiliary tool for forming composite material vacuum bag

Abstract

The utility model relates to the technical field of composite materials, and discloses a bag sealing auxiliary tool for forming a composite material vacuum bag, which comprises a grip, a base and a pressure head, the grip is of a U-shaped structure, the base is fixedly connected to the bottom of the open end of the grip, and the pressure head is fixedly connected to the top of the open end of the grip. The grip comprises a holding section and an elastic section, and the elastic section is elastic. The problems that in the prior art, bag sealing air tightness is poor, and working procedure time is long are solved.

Description

Technical Field

[0001] This utility model patent relates to the technical field of composite materials, specifically, to a bag sealing auxiliary tool for composite material vacuum bag forming. Background Art

[0002] Composite vacuum bag forming is a highly efficient and low-cost composite forming method that is widely used in the manufacture of large-size, low-thickness composite laminate structures. The sealing operation of the vacuum bag significantly affects the product quality of the composite product.

[0003] A Chinese patent with the announcement number CN212557061U discloses a bag sealing auxiliary device comprising: a base plate, a jig, a lifting mechanism, and an adjustment mechanism. The upper surface of the base plate is fixedly connected to the jig, and the lifting mechanism is rotatably connected to the inner bottom wall of the jig via a bearing. One end of the lifting mechanism is fixedly connected to the adjustment mechanism, and the jig and the adjustment mechanism are movably connected. By setting up the lifting mechanism, the rotating rod rotates, and the rotating rod drives the threaded column to rotate through the active bevel gear and the driven bevel gear, causing the threaded rod to move up and down. The threaded rod drives two telescopic rods up and down through the connecting block, and the telescopic rod drives two triangular plates to move relative to or away from each other. The packaging bag is placed on the outer surface of the bag sealing auxiliary device. The distance between the jig and the two triangular plates is adjusted according to the width of the packaging bag to assist in the packaging of packaging bags of different widths.

[0004] During the bag sealing process, operators must apply sealing tape while squeezing both sides of the vacuum bag to ensure a tight bond. Uneven squeezing force can lead to varying seals in different areas, causing vacuum pressure to leak in areas with poor sealing, resulting in insufficient vacuum in the bag. Excessive squeezing force can affect the adhesive strength due to the thinness of the sealing tape, while insufficient squeezing force can cause some areas to be unbonded, introducing air holes and leaks. Either defect significantly increases the time required for post-bag sealing airtightness testing, thereby impacting production efficiency. Utility Model Content

[0005] The purpose of the utility model is to provide a bag sealing auxiliary tool for composite material vacuum bag forming, aiming to solve the problems of poor bag sealing airtightness and long process time in the prior art.

[0006] The utility model is realized in this way: a sealing auxiliary tool for composite material vacuum bag forming comprises a handle, a base and a pressure head, wherein the handle is a U-shaped structure, the base is fixedly connected to the bottom of the open end of the handle, and the pressure head is fixedly connected to the top of the open end of the handle.

[0007] The handle comprises a gripping section and an elastic section, and the elastic section is elastic.

[0008] The base is a flat disc-shaped structure.

[0009] The pressure head includes a pressure roller, a pressure roller connecting assembly and a pressure roller bottom ring. The pressure roller connecting assembly is installed in the middle of the pressure roller bottom ring, and the pressure roller is rotatably connected to the middle of the pressure roller connecting assembly.

[0010] A limiting mechanism is provided in the middle of the gripping section.

[0011] A slide rail structure is provided between the pressure roller connecting assembly and the pressure roller bottom ring, and the pressure roller connecting assembly is slidably connected to the pressure roller bottom ring.

[0012] The base and the pressure head are both detachably connected to the bottom of the grip section.

[0013] Compared with the prior art, the present invention has the following beneficial effects:

[0014] Compared with the existing technology, the utility model provides a composite material vacuum bag forming auxiliary tool, which has the advantages that: the use of this tool avoids the problem of discontinuous pressure caused by manual pressing, reduces the possibility of false sealing during the bag sealing process, and also reduces the deformation and damage of the vacuum film caused by the hard friction between the extruded object and the upper vacuum film. The bag sealing position is flatter, and the bag sealing efficiency is improved. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 Schematic diagram of the structure of the bag sealing auxiliary tool for composite material vacuum bag forming according to Example 1 of the present application;

[0016] Figure 2 This is a schematic diagram of the use process of the bag sealing auxiliary tool in Example 1 of the present application;

[0017] Figure 3 This is a schematic diagram of the optimized structure of Example 2 of the present application (hidden base 2);

[0018] Figure 4 This is a schematic diagram of the optimized structure of Example 3 of the present application.

[0019] Reference numerals:

[0020] 1. Handle; 2. Base; 3. Press head;

[0021] 11. Grip section; 12. Elastic section;

[0022] 31. Pressing roller; 32. Pressing roller connecting assembly; 33. Pressing roller bottom ring;

[0023] 13. Limiting mechanism; 331. Slide rail structure. DETAILED DESCRIPTION

[0024] In order to make the purpose, technical solutions and advantages of the present invention more clearly understood, the present invention is further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain the present invention and are not intended to limit the present invention.

[0025] The implementation of the present invention is described in detail below with reference to specific embodiments.

[0026] The same or similar numbers in the drawings of this embodiment correspond to the same or similar parts; in the description of this utility model, it should be understood that if there are terms such as "upper", "lower", "left", "right", etc. indicating directions or positional relationships, they are based on the directions or positional relationships shown in the drawings. This is only for the convenience of describing the utility model and simplifying the description, and does not indicate or imply that the device or element referred to must have a specific direction, be constructed and operated in a specific direction. Therefore, the terms describing the positional relationship in the drawings are only used for illustrative purposes and cannot be understood as limiting this patent. For ordinary technicians in this field, the specific meanings of the above terms can be understood according to specific circumstances.

[0027] like Figure 1-4 As shown, the utility model provides a bag sealing auxiliary tool for composite material vacuum bag forming, including a handle 1, a base 2 and a pressing head 3. The handle 1 is a U-shaped structure, the base 2 is fixedly connected to the bottom of the open end of the handle 1, and the pressing head 3 is fixedly connected to the top of the open end of the handle 1.

[0028] The U-shaped grip provides an ergonomic design, making it more comfortable for the operator to hold and making it easier for the operator to apply force.

[0029] The handle 1 includes a grip section 11 and an elastic section 12 , and the elastic section 12 is elastic.

[0030] The base 2 is a flat disc-shaped structure.

[0031] The fixed connection of the base 2 provides stability to the tool, ensuring that the tool is not easy to slide or rotate during operation, enhancing the accuracy and safety of operation. The flat disc-shaped base 2 design increases the contact area with the work surface, improving the stability and load-bearing capacity of the tool.

[0032] The pressure head 3 includes a pressure roller 31 , a pressure roller connecting assembly 32 and a pressure roller bottom ring 33 . The pressure roller connecting assembly 32 is installed in the middle of the pressure roller bottom ring 33 , and the pressure roller 31 is rotatably connected to the middle of the pressure roller connecting assembly 32 .

[0033] The fixed connection of the pressure head 3 enables the tool to provide uniform pressure when sealing the bag, helping to achieve a tighter seal. This structural design allows the pressure roller 31 to rotate flexibly to adapt to the needs of sealing bags of different shapes and sizes, improving the applicability and flexibility of the tool.

[0034] A limiting mechanism 13 is provided in the middle of the grip section 11 .

[0035] The design of the elastic section 12 allows the handle to adapt to different operator hand shapes and grip strengths, providing a better grip. The elasticity also absorbs some of the pressure, reducing fatigue during operation. The limiter mechanism 13 prevents excessive movement of the pressure head, protecting the pressure roller 31 and the pressure roller bottom ring 33 from damage, while ensuring even pressure distribution during the bag sealing process.

[0036] A slide rail structure 331 is provided between the pressure roller connecting assembly 32 and the pressure roller bottom ring 33 , and the pressure roller connecting assembly 32 and the pressure roller bottom ring 33 are slidably connected.

[0037] The slide rail structure 331 allows the pressure roller connecting assembly 32 to move smoothly on the pressure roller bottom ring 33, reducing friction and improving the smoothness and efficiency of operation.

[0038] The base 2 and the pressure head are both detachably connected to the bottom of the grip section 11 .

[0039] The detachable connection makes it easier to maintain and replace parts of the tool, and also makes it easier to adjust the length or configuration of the tool as needed, thereby improving the flexibility and adaptability of the tool.

[0040] Here’s how to use it:

[0041] 1. Place vacuum films on the upper and lower sides of the composite material preform that has completed the laying process. Start bonding the sealing tape to the lower vacuum film at the appropriate position of the vacuum film. Peel off the release paper on the upper side of the sealing tape from one end of the tape, and press the upper vacuum film to make it tightly bonded to the sealing tape.

[0042] 2. Place the vacuum film assembly (upper vacuum film, sealing tape, lower vacuum film) at the end of the sealing tape between the pressure roller 31 of the bag sealing auxiliary tool pressure head 3 and the base 2, so that the sealing tape is located in the middle of the pressure roller 31 and the forward direction of the pressure roller 31 is consistent with the extension direction of the sealing tape;

[0043] 3. Grip the gripping section 11 of the bag sealing auxiliary tool handle 1 with your hand, and convert the gripping force into a squeezing force between the pressure head 3 and the base 2 to tightly combine the vacuum membrane group;

[0044] 4. Continue to peel off the release paper on the upper side of the sealing tape and move the bag sealing auxiliary tool along the extension direction of the sealing tape to achieve continuous and uninterrupted extrusion of the vacuum film group and complete the vacuum bag sealing operation.

[0045] Example 2:

[0046] On the basis of Example 1, a slide rail structure 331 is designed between the pressure roller connecting assembly 32 of the pressure head 3 and the pressure roller bottom ring 33. The angle between the advance direction of the pressure roller 31 and the direction of the handle 1 can be adjusted by rotation according to the actual usage of the operator, so that the operator can perform the bag sealing operation in the most comfortable way.

[0047] Example 3:

[0048] On the basis of Example 1, a limiting mechanism 13 is added to the gripping section 11 of the grip 1 to limit the maximum size that the grip 1 can open and the minimum size that it can close, so as to prevent the grip 1 from opening too wide and exceeding its elastic range and being unable to recover, or opening too narrow and excessively squeezing the sealing tape to reduce the sealing effect.

[0049] As shown in the drawings, a preferred embodiment of the present invention is provided.

[0050] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent replacements and improvements made within the spirit and principles of the present invention should be included in the scope of protection of the present invention.

Claims

1. A bag sealing auxiliary tool for composite material vacuum bag forming, characterized in that: The invention comprises a handle (1), a base (2) and a pressure head (3); the handle (1) is a U-shaped structure; the base (2) is fixedly connected to the bottom of the open end of the handle (1); and the pressure head (3) is fixedly connected to the top of the open end of the handle (1).

2. The bag sealing auxiliary tool for composite material vacuum bag forming according to claim 1, characterized in that: The handle (1) comprises a gripping section (11) and an elastic section (12), and the elastic section (12) is elastic.

3. The bag sealing auxiliary tool for composite material vacuum bag forming according to claim 2, characterized in that: The base (2) is a flat disc-shaped structure.

4. The bag sealing auxiliary tool for composite material vacuum bag forming according to claim 3, characterized in that: The pressure head (3) comprises a pressure roller (31), a pressure roller connecting assembly (32) and a pressure roller bottom ring (33); the pressure roller connecting assembly (32) is installed in the middle of the pressure roller bottom ring (33); and the pressure roller (31) is rotatably connected to the middle of the pressure roller connecting assembly (32).

5. The bag sealing auxiliary tool for composite material vacuum bag forming according to claim 2, characterized in that: A limiting mechanism (13) is provided in the middle of the gripping section (11).

6. The bag sealing auxiliary tool for composite material vacuum bag forming according to claim 4, characterized in that: A slide rail structure (331) is provided between the pressure roller connection assembly (32) and the pressure roller bottom ring (33), and the pressure roller connection assembly (32) is slidably connected to the pressure roller bottom ring (33).

7. The bag sealing auxiliary tool for composite material vacuum bag forming according to claim 5, characterized in that: The base (2) and the pressure head are both detachably connected to the bottom of the gripping section (11).

Images