High-viscosity polyimide double-sided tape

Abstract

The utility model relates to the technical field of double-sided adhesive tapes, in particular to a high-viscosity polyimide double-sided adhesive tape which comprises an adhesive tape body and further comprises a reel arranged on the inner side of the adhesive tape body, connecting columns are symmetrically installed on the two sides of the reel in a sliding mode, and a cutting block is jointly and fixedly installed on the top sides of the two connecting columns. A movable groove is formed in the cutting block, a connecting plate is slidably connected to the inner side wall of the movable groove in a limiting mode, a cutting blade is fixedly installed on the bottom side of the connecting plate, a cutting groove slidably connected with the cutting blade is formed in the bottom side of the cutting block, and the cutting groove communicates with the movable groove. And contraction mechanisms are arranged at the two ends of the connecting plate. According to the utility model, an operator can cut adhesive tape bodies with different sizes anytime and anywhere according to actual requirements through stretching and retracting of the cutting blade, secondary cutting is not needed, the operation is simple, the adhesive tape bodies are more flexible to use, and waste caused by secondary cutting is also avoided.

Description

Technical Field

[0001] The utility model relates to the technical field of double-sided tapes, and particularly relates to a high-adhesion polyimide double-sided tape. Background Art

[0002] In the existing tape technology, double-sided tapes are widely used in various bonding scenarios due to their double-sided adhesive properties. However, in special environments such as high temperature, high humidity, strong chemical corrosion, etc., traditional double-sided tapes often have problems such as reduced adhesion and peeling, and cannot meet the usage requirements. Polyimide materials are widely used in high-end electronics, aerospace and other fields due to their excellent high-temperature resistance, chemical corrosion resistance and other properties. Therefore, applying polyimide materials to double-sided tapes and developing a high-adhesion polyimide double-sided tape have important practical values.

[0003] Generally, in order to facilitate the operator to use the double-sided tape, cutting grooves that are easy to tear are preset on the double-sided tape so that the operator can tear it off. Since the cutting grooves are set at fixed intervals and shapes, the sizes of the tapes torn off through them are usually exactly the same. The cut tapes may not be practical for actual situations and need secondary cutting, which to a certain extent limits the flexibility of tape use, making it impossible for users to adjust the size of the tape according to actual needs. Secondary cutting not only increases the complexity and time cost of operation, but also may cause waste of the tape. Summary of the Utility Model

[0004] Aiming at the above-mentioned shortcomings of the prior art, the utility model provides a high-adhesion polyimide double-sided tape, which can effectively solve the problems that the flexibility of the double-sided tape in use is limited and the size of the tape cannot be adjusted according to actual needs due to the fixed spacing and shape of the cutting grooves in the prior art.

[0005] To achieve the above purposes, the utility model is realized through the following technical solutions:

[0006] The utility model provides a high-adhesion polyimide double-sided tape, which includes a tape body, and also includes a reel arranged inside the tape body. Connecting columns are symmetrically and slidably installed on both sides of the reel. A cutting block is fixedly installed on the top sides of the two connecting columns. An activity groove is opened inside the cutting block. A connecting plate is limited and slidably connected to the inner side wall of the activity groove. A cutting blade is fixedly installed on the bottom side of the connecting plate. A cutting groove for the sliding connection of the cutting blade is opened on the bottom side of the cutting block, and the cutting groove is communicated with the activity groove. Shrinking mechanisms are arranged at both ends of the connecting plate. A sliding column is fixedly installed on the top side of the cutting blade, and the sliding column movably penetrates through the top wall of the activity groove.

[0007] According to the above-mentioned high-viscosity polyimide double-sided tape, the contraction mechanism includes support columns symmetrically and fixedly installed on the inner wall of the movable groove. The support columns movably penetrate through the cutting blade and are slidably connected to the cutting blade. A spring is sleeved on the outer side of the support column. The top end of the spring is fixedly connected to the inner top wall of the movable groove, and the bottom end of the spring is fixedly connected to the top side of the connecting plate.

[0008] According to the above-mentioned high-viscosity polyimide double-sided tape, connecting shafts are symmetrically and fixedly installed on the relative inner sides of the two connecting columns. Rotating balls are installed at the ends of the two connecting shafts away from the connecting columns. Limit grooves slidably connected to the connecting shafts are symmetrically formed on both sides of the reel. Sliding grooves communicating with the limit grooves are symmetrically formed inside the reel, and the rotating balls are slidably connected to the sliding grooves.

[0009] According to the above-mentioned high-viscosity polyimide double-sided tape, a pressing plate is fixedly installed on the top side of the sliding column.

[0010] According to the above-mentioned high-viscosity polyimide double-sided tape, the tape body includes a polyimide base material layer and two high-viscosity adhesive layers respectively coated on both sides of the base material layer.

[0011] According to the above-mentioned high-viscosity polyimide double-sided tape, a protective film is provided on one side of the tape body, and the protective film is made of polyethylene terephthalate material.

[0012] The technical solution provided by the present utility model has the following beneficial effects compared with the known prior art:

[0013] After the operator of the present utility model unfolds the tape body to the required length, by pressing the sliding column and the pressing plate, the connecting plate and the cutting blade are moved towards the cutting groove until the cutting blade slides out of the movable groove. The operator can press the required cutting position of the tape body towards the cutting blade, and then cut off the tape body through the cutting blade. Then, the limit on the sliding column and the pressing plate is released, and the cutting blade resets under the action of the spring force, preventing it from being exposed to the outside and scratching the operator. Through the telescoping of the cutting blade, the operator can cut off the tape body of different sizes at any time according to actual needs without secondary cutting. The operation is simple, making the use of the tape body more flexible and also avoiding waste caused by secondary cutting. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] In order to more clearly illustrate the technical solutions in the embodiments of the present utility model or the prior art, the following will briefly introduce the drawings required for use in the description of the embodiments or the prior art. Obviously, the following drawings are only some embodiments of the present utility model. For those of ordinary skill in the art, other drawings can be obtained based on these drawings without creative efforts.

[0015] Figure 1 is a three-dimensional structural schematic diagram of the present utility model;

[0016] Figure 2 is a side view cross-sectional structural schematic diagram of the cut block of the present utility model;

[0017] Figure 3 is a side view cross-sectional structural schematic diagram of the reel of the present utility model.

[0018] Reference numerals: 1, reel; 2, tape body; 3, connecting column; 4, cut block; 5, movable groove; 6, connecting plate; 7, cutting blade; 8, cutting groove; 9, support column; 10, spring; 11, connecting shaft; 12, rolling ball; 13, sliding groove; 14, limiting groove; 15, sliding column; 16, pressing plate. Detailed implementation manners

[0019] To make the objectives, technical solutions and advantages of the embodiments of the present utility model clearer, the technical solutions in the embodiments of the present utility model will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present utility model. Obviously, the described embodiments are some, but not all, of the embodiments of the present utility model. All other embodiments obtained by those of ordinary skill in the art based on the embodiments of the present utility model without creative efforts shall fall within the protection scope of the present utility model.

[0020] The present utility model will be further described below with reference to the embodiments.

[0021] Embodiment: Refer to Figures 1 to 3A high-viscosity polyimide double-sided tape comprises a tape body 2 and a reel 1 arranged inside the tape body 2. The tape body 2 comprises a polyimide base material layer and two high-viscosity adhesive layers coated on both sides of the base material layer. A protective film is provided on one side of the tape body 2. The protective film is made of polyethylene terephthalate material. Connecting shafts 11 are symmetrically fixedly installed on the opposite inner sides of two connecting columns 3. Rolling balls 12 are rotatably installed on the ends of the two connecting shafts 11 away from the connecting columns 3. Limiting grooves 14 symmetrically arranged on both sides of the reel 1 for sliding connection with the connecting shafts 11 are symmetrically opened. A sliding groove 1 connected to the limiting groove 14 is symmetrically opened inside the reel 1. 3, and the rolling ball 12 is slidably connected to the slide groove 13, the top sides of the two connecting columns 3 are jointly fixed with a cutting block 4, the interior of the cutting block 4 is provided with a movable groove 5, the inner side wall of the movable groove 5 is slidingly connected with a connecting plate 6, the bottom side of the connecting plate 6 is fixedly installed with a cutting blade 7, the bottom side of the cutting block 4 is provided with a cutting groove 8 slidably connected to the cutting blade 7, and the cutting groove 8 is communicated with the movable groove 5, and a retraction mechanism is provided at both ends of the connecting plate 6, the top side of the cutting blade 7 is fixedly installed with a sliding column 15, the sliding column 15 moves through the top wall of the movable groove 5, and a pressing plate 16 is fixedly installed on the top side of the sliding column 15; since one side of the tape body 2 is provided with a protective The protective film can be used to stick one end of the tape body 2 to the outside of the reel 1, and then the tape body 2 is wound in circles. The protective film prevents the tape body 2 of the outer circle from sticking to the tape body 2 of the adjacent inner circle. During the winding process, the connecting post 3 can rotate around the reel 1 through the sliding connection between the connecting shaft 11 and the limiting groove 14 and the sliding connection between the rolling ball 12 and the sliding groove 13, so that the connecting post 3 and the cutting block 4 will not affect the winding and normal use of the tape body 2. When the tape body 2 needs to be taken, the operator can unroll the tape body 2 to the required length by pulling the outer starting end of the tape body 2. Then, the operator can slide the sliding post 15 and The pressing plate 16 presses in the direction of the cutting block 4, and the slide column 15 drives the connecting plate 6 and the cutting blade 7 to move in the direction of the cutting groove 8 until the side of the connecting plate 6 close to the cutting groove 8 is in contact with the inner wall of the movable groove 5. At this time, the cutting blade 7 is exposed outside the movable groove 5. The operator can press the required cutting part of the tape body 2 against the cutting blade 7, and then cut the tape body 2 with the cutting blade 7. After cutting the tape body 2, the cutting blade 7 releases the pressure on the slide column 15 and the pressing plate 16, and the cutting blade 7 is reset under the action of the retraction mechanism, which causes it to be placed back inside the movable groove 5 to prevent it from being exposed to the outside and scratching the operator.

[0022] Specifically, the contraction mechanism includes support columns 9 symmetrically and fixedly installed on the inner wall of the movable groove 5. The support columns 9 movably penetrate through the cutting blade 7 and are slidably connected to the cutting blade 7. A spring 10 is sleeved outside the support columns 9. The top end of the spring 10 is fixedly connected to the inner top wall of the movable groove 5, and the bottom end of the spring 10 is fixedly connected to the top side of the connecting plate 6. When the sliding column 15 is pressed downward, the connecting plate 6 moves toward the cutting groove 8 and stretches the spring 10. When the operator releases the pressing on the sliding column 15 and the pressing plate 16, under the action of the elastic force of the spring 10, the connecting plate 6 and the cutting blade 7 can slide toward the sliding column 15 until the cutting blade 7 slides into the interior of the movable groove 5.

[0023] The working principle of the present utility model is as follows:

[0024] When the tape body 2 needs to be taken, the operator can unfold the tape body 2 to the required length by pulling the outer starting end of the tape body 2, and then press the sliding column 15 and the pressing plate 16 toward the cutting block 4. The sliding column 15 drives the connecting plate 6 and the cutting blade 7 to move toward the cutting groove 8. At this time, the connecting plate 6 slides on the support column 9, and the spring 10 is stretched until the side of the connecting plate 6 close to the cutting groove 8 fits against the inner wall of the movable groove 5. At this time, the cutting blade 7 is exposed outside the movable groove 5. The operator can press the required cutting position of the tape body 2 against the cutting blade 7, and then cut off the tape body 2 through the cutting blade 7. After the cutting blade 7 cuts off the tape body 2, the pressing on the sliding column 15 and the pressing plate 16 is released. The cutting blade 7 resets under the action of the elastic force of the spring 10, and the spring 10 makes it reset inside the movable groove 5 to prevent it from being exposed to the outside and scratching the operator. Through the telescoping of the cutting blade 7, the operator can cut off the tape body 2 of different sizes at any time according to actual needs without secondary cutting. The operation is simple, making the use of the tape body 2 more flexible and also avoiding waste caused by secondary cutting.

[0025] The above embodiments are only used to illustrate the technical solutions of the present utility model, rather than to limit it; although the present utility model has been described in detail with reference to the foregoing embodiments, those of ordinary skill in the art should understand that: they can still modify the technical solutions recorded in the foregoing embodiments, or perform equivalent replacements on some of the technical features; and these modifications or replacements will not make the essence of the corresponding technical solutions deviate from the protection scope of the technical solutions of the embodiments of the present utility model.

Claims

1. A high-viscosity polyimide double-sided tape, comprising a tape body (2), characterized in that, It further includes a reel (1) arranged inside the tape body (2). Connecting columns (3) are symmetrically and slidably mounted on both sides of the reel (1). A cutting block (4) is fixedly mounted on the top sides of the two connecting columns (3). An activity groove (5) is formed inside the cutting block (4). A connecting plate (6) is limited and slidably connected to the inner side wall of the activity groove (5). A cutting blade (7) is fixedly mounted on the bottom side of the connecting plate (6). A cutting groove (8) for slidably connecting with the cutting blade (7) is formed on the bottom side of the cutting block (4), and the cutting groove (8) communicates with the activity groove (5). A contraction mechanism is arranged at both ends of the connecting plate (6). A sliding column (15) is fixedly mounted on the top side of the cutting blade (7), and the sliding column (15) movably penetrates through the top wall of the activity groove (5).

2. The high-viscosity polyimide double-sided tape according to claim 1, wherein, The contraction mechanism includes support columns (9) symmetrically and fixedly mounted on the inner wall of the activity groove (5). The support columns (9) movably penetrate through the cutting blade (7) and are slidably connected to the cutting blade (7). A spring (10) is sleeved on the outer side of the support column (9). The top end of the spring (10) is fixedly connected to the inner top wall of the activity groove (5), and the bottom end of the spring (10) is fixedly connected to the top side of the connecting plate (6).

3. The high-viscosity polyimide double-sided tape according to claim 1, characterized in that, Connecting shafts (11) are symmetrically and fixedly mounted on the relative inner sides of the two connecting columns (3). A rolling ball (12) is rotatably mounted at one end of each of the two connecting shafts (11) away from the connecting columns (3). Limiting grooves (14) for slidably connecting with the connecting shafts (11) are symmetrically formed on both sides of the reel (1). Sliding grooves (13) communicating with the limiting grooves (14) are symmetrically formed inside the reel (1), and the rolling balls (12) are slidably connected to the sliding grooves (13).

4. A high-viscosity polyimide double-sided tape according to claim 1, characterized in that, A pressing plate (16) is fixedly mounted on the top side of the sliding column (15).

5. The high-viscosity polyimide double-sided tape according to claim 1, wherein The tape body (2) includes a polyimide base material layer and two high-viscosity adhesive layers respectively coated on both sides of the base material layer.

6. The high-viscosity polyimide double-sided tape according to claim 1, characterized in that A protective film is arranged on one side of the tape body (2), and the protective film is made of polyethylene terephthalate material.

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