A processing and pressing device for foam tape

Abstract

The utility model belongs to the technical field of foam tape processing, specifically discloses a kind of foam tape processing pressure device, including base, and fixed mounting is equipped with extrusion table on the base, and forming cavity is opened in the extrusion table, and the sliding joint is equipped with detent baffle in the extrusion table, and the upper surface of base is fixedly connected with slide, the inside slide of slide is connected with rack, and the one end of rack near extrusion table is provided with flexible pressure mechanism for carrying out pressure to foam tape, and driving mechanism for moving rack is provided on the base.This foam tape processing pressure device, in the process of foam tape pressure, the progressive compression of spring in flexible pressure mechanism makes the pressure that pressure head exerts to foam from zero start slowly increase, avoid the instantaneous collapse of pore structure caused by pressure mutation in traditional rigid extrusion, and this kind of flexible contact significantly reduces the irreversible deformation of foam fiber, protects its three-dimensional porous network structure.

Description

Technical Field

[0001] This application relates to the field of foam tape processing technology, specifically a foam tape processing and pressing device. Background Technology

[0002] Foam tape is made by coating one or both sides of EVA or PE foam with solvent-based (or hot-melt) pressure-sensitive adhesive and then covering it with release paper. It has the functions of sealing and shock absorption, and has excellent sealing performance, resistance to compression deformation, flame retardancy, and wettability. In the processing stage, compression is a key step to ensure product performance and quality.

[0003] Currently, in the process of compressing foam tape, the foam tape is usually directly squeezed by controlling the compression head. However, the compression recovery rate of foam material is crucial to the printing or bonding quality. Direct hard compression can easily lead to irreversible deformation of the foam pore structure, reduce its elastic recovery ability, and easily damage the foam's resilience. Utility Model Content

[0004] In view of this, the purpose of this utility model is to overcome the shortcomings of the prior art and to propose a foam tape processing and pressing device to solve the problems existing in the prior art.

[0005] To achieve the above objectives, this utility model provides a foam tape processing and pressing device, including a base, an extrusion table fixedly installed on the base, a forming cavity opened on the extrusion table, a locking baffle slidably engaged on the extrusion table, a slide block fixedly connected to the upper surface of the base, a rack slidably connected to the inner side of the slide block, a flexible pressing mechanism for pressing the foam tape provided at one end of the rack near the extrusion table, and a driving mechanism for moving the rack provided on the base.

[0006] Preferably, the flexible pressing mechanism includes a shifting cylinder fixedly connected to one end of the rack near the extrusion table. The shifting cylinder has a large cylinder groove and a small cylinder groove respectively. The flexible pressing mechanism can apply a flexible and gradually increasing holding force to the foam tape as the pressing head gradually approaches the foam tape, rather than directly affecting the pressing.

[0007] Preferably, a slip ring is slidably connected inside the large cylindrical groove, a pressure rod is fixedly inserted through the inner side of the slip ring, a spring is movably sleeved on the outer surface of the pressure rod, and a clamping head is provided at the end of the pressure rod away from the displacement cylinder.

[0008] Preferably, the driving mechanism includes a motor fixedly mounted on the base, the output end of the motor is fixedly connected to a first rotating shaft, and a driving wheel is fixedly sleeved on the outer surface of the first rotating shaft. The driving mechanism can drive the pressing head to move forward smoothly, thereby stably pressing the foam tape.

[0009] Preferably, a conveyor belt is slidably connected to the outer surface of the drive wheel, and a second shaft is rotatably connected to the inner surface of the base.

[0010] Preferably, a transmission wheel is fixedly sleeved on the outer surface of the second rotating shaft, and the outer surface of the transmission wheel is slidably connected to the inner side of the conveyor belt away from the drive wheel. A gear is fixedly sleeved on the outer surface of the second rotating shaft, and the outer surface of the gear is meshed with the outer surface of the rack.

[0011] Compared with the prior art, the present invention has the following beneficial effects:

[0012] 1. In the process of pressing the foam tape, the progressive compression of the spring in the flexible pressing mechanism causes the pressure applied by the pressing head to the foam to increase slowly from zero during the pressing process. This avoids the instantaneous collapse of the pore structure caused by sudden pressure changes in traditional hard extrusion. This flexible contact significantly reduces the irreversible deformation of the foam fibers and protects its three-dimensional porous network structure.

[0013] 2. This foam tape processing and pressing device, through the drive mechanism, allows the pressing head to smoothly approach the foam tape. When the spring is compressed to its limit (the end of the pressure rod contacts the inner wall of the displacement cylinder), the system automatically switches to a hard compression mode to ensure that the foam reaches the target compression rate, thereby meeting the flatness requirements for printing or bonding. This automatic switching mode, through the coordinated design of mechanical limit and pressure control, achieves the dual goals of "structural protection" and "quality compliance" in foam processing. Attached Figure Description

[0014] Figure 1 This is a schematic diagram of the overall structure of this application;

[0015] Figure 2 This is a schematic diagram of the surface structure of the extrusion stage in this application;

[0016] Figure 3 This is a schematic diagram of the internal structure of the shift tube in this application.

[0017] The components are: 1. Base; 2. Extrusion table; 3. Forming cavity; 4. Positioning baffle; 5. Slide; 6. Rack; 7. Shifting cylinder; 8. Large cylinder groove; 9. Small cylinder groove; 10. Slip ring; 11. Pressure rod; 12. Spring; 13. Pressing head; 14. Motor; 15. First rotating shaft; 16. Drive wheel; 17. Conveyor belt; 18. Second rotating shaft; 19. Transmission wheel; 20. Gear. Detailed Implementation

[0018] The technical solutions of the embodiments of this application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this application, and not all embodiments. Based on the embodiments of this application, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this application.

[0019] Please see Figure 1-3 A foam tape processing and pressing device includes a base 1, an extrusion table 2 fixedly mounted on the base 1, a forming cavity 3 formed on the extrusion table 2, and a pressing head 13 pressing the foam tape in the forming cavity 3. The inner diameter of the forming cavity 3 is basically the same as the diameter of the pressing head 13 to allow the pressing head 13 to smoothly enter the forming cavity 3. A positioning baffle 4 is slidably engaged on the extrusion table 2. A slide 5 is fixedly connected to the upper surface of the base 1. A rack 6 is slidably connected to the inner side of the slide 5. A flexible pressing mechanism for pressing the foam tape is provided at one end of the rack 6 near the extrusion table 2. A driving mechanism for moving the rack 6 is provided on the base 1.

[0020] Through the above technical solution, in the process of pressing the foam tape, the device first places the foam tape in the forming cavity 3 of the extrusion table 2, and the other end of the forming cavity 3 is blocked by the positioning baffle 4. Then, through the drive mechanism and the flexible pressure mechanism, the pressing head 13 can move forward stably, gradually approach and contact the foam tape in the forming cavity 3. During this period, the pressing head 13 will apply a gradually increasing extrusion force to the foam tape, rather than direct hard extrusion.

[0021] Specifically, the flexible pressurization mechanism includes a shifting cylinder 7 fixedly connected to one end of the rack 6 near the extrusion table 2, and the shifting cylinder 7 has a large cylinder groove 8 and a small cylinder groove 9 respectively opened inside.

[0022] Through the above technical solution, during the entire process of the movement of the pressing head 13, the slip ring 10 and the spring 12 are both in the large cylindrical groove 8, and the slip ring 10 divides the pressure rod 11 into two relatively separated parts. The part wrapped by the spring 12 will gradually move into the small cylindrical groove 9 as the spring 12 gradually deforms.

[0023] Specifically, a slip ring 10 is slidably connected inside the large cylinder groove 8, and a pressure rod 11 is fixedly inserted through the inner side of the slip ring 10. A spring 12 is movably sleeved on the outer surface of the pressure rod 11, and a clamping head 13 is provided at the end of the pressure rod 11 away from the displacement cylinder 7.

[0024] Through the above technical solution, during the forward pushing of the displacement cylinder 7, it will apply an elastic force to the slip ring 10 through the spring 12. As the deformation of the spring 12 increases, the flexible force (elastic force) indirectly acting on the pressing head 13 will gradually increase until the end of the pressure rod 11 away from the pressing head 13 enters the small cylinder groove 9 and contacts the inner wall of the displacement cylinder 7.

[0025] Specifically, the drive mechanism includes a motor 14 fixedly mounted on the base 1, the output end of the motor 14 is fixedly connected to a first rotating shaft 15, and a drive wheel 16 is fixedly sleeved on the outer surface of the first rotating shaft 15.

[0026] With the above technical solution, after the motor 14 is turned on, it will drive the first rotating shaft 15 to rotate (the first rotating shaft 15 is rotatably connected to the base 1), and during the rotation of the first rotating shaft 15, it will drive the drive wheel 16 to rotate synchronously.

[0027] Specifically, a conveyor belt 17 is slidably connected to the outer surface of the drive wheel 16, and a second rotating shaft 18 is rotatably connected to the inner surface of the base 1.

[0028] Through the above technical solution, the conveyor belt 17 plays the role of transmitting and guiding force and motion, converting the rotation of the drive wheel 16 into the rotation of the transmission wheel 19.

[0029] Specifically, a transmission wheel 19 is fixedly sleeved on the outer surface of the second rotating shaft 18, and the outer surface of the transmission wheel 19 is slidably connected to the inner side of the conveyor belt 17 away from the drive wheel 16. A gear 20 is fixedly sleeved on the outer surface of the second rotating shaft 18, and the outer surface of the gear 20 is meshed with the outer surface of the rack 6.

[0030] Through the above technical solution, in the transmission system composed of drive wheel 16, conveyor belt 17 and transmission wheel 19, the rotation wrap angle is greater than 120 degrees. This is to ensure that force and motion can be smoothly transmitted and guided through the conveyor belt 17.

[0031] Working principle: During the compression of foam tape, the device first places the foam tape into the forming cavity 3 of the extrusion table 2. The other end of the forming cavity 3 is blocked by the clamping baffle 4 to prevent any tape from overflowing during compression. Then, the motor 14 is turned on, driving the first rotating shaft 15 to rotate. During the rotation of the first rotating shaft 15, the drive wheel 16 rotates synchronously. Simultaneously, under the transmission action of the conveyor belt 17, the transmission wheel 19 rotates synchronously. During this process, the second rotating shaft 18 and the gear 20 also rotate synchronously. Meanwhile, as gear 20 rotates, it drives rack 6 to move, allowing rack 6 to slide laterally along the inner side of slide block 5. This means the other end of rack 6 will drive shifting cylinder 7, along with pressing head 13, to gradually approach the foam tape inside molding cavity 3. When pressing head 13 contacts the foam tape, as shifting cylinder 7 continues to push forward, it compresses spring 12 and applies a directional elastic force to slip ring 10 through the deformation of spring 12. This flexible, reverse elastic force acts on the pressing ring 10 through pressure rod 11. The head 13 ultimately compresses the foam tape by pressing it. As the spring 12 is gradually compressed to a certain extent (the slip ring 10 slides along the large cylinder groove 8 and moves closer to the small cylinder groove 9), the end of the pressure rod 11 away from the pressing head 13 inserts into the small cylinder groove 9 and eventually contacts the inner wall of the shifting cylinder 7 located in the small cylinder groove 9. At this point, the foam tape can be subjected to hard compression. That is, during the entire pressing process of the foam tape, the force applied by the pressing head 13 to the foam tape is initially flexible and gradually increases. The foam tape is compressed and shaped by the final hard compression. The deformation process of spring 12 transforms the concentrated stress into a distributed load, making the foam more evenly stressed and reducing the risk of local overload. When spring 12 is compressed to its limit (one end of pressure rod 11 contacts the inner wall of displacement cylinder 7), the system automatically switches to hard compression mode to ensure that the foam reaches the target compression rate and meets the flatness requirements of the bonding. After the compression is completed, the locking baffle 4 can be pushed up to easily remove the foam tape from the forming cavity 3.

[0032] Although embodiments of this application have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and variations can be made to these embodiments without departing from the principles and spirit of this application, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A foam tape processing and pressing device, comprising a base (1), characterized in that: An extrusion table (2) is fixedly installed on the base (1). A forming cavity (3) is opened on the extrusion table (2). A positioning baffle (4) is slidably engaged on the extrusion table (2). A slide (5) is fixedly connected to the upper surface of the base (1). A rack (6) is slidably connected to the inner side of the slide (5). A flexible pressing mechanism for pressing the foam tape is provided at one end of the rack (6) near the extrusion table (2). A driving mechanism for moving the rack (6) is provided on the base (1).

2. The foam tape processing and pressing device according to claim 1, characterized in that: The flexible pressurizing mechanism includes a shifting cylinder (7) fixedly connected to one end of the rack (6) near the extrusion table (2), and the shifting cylinder (7) has a large cylinder groove (8) and a small cylinder groove (9) respectively.

3. The foam tape processing and pressing device according to claim 2, characterized in that: A slip ring (10) is slidably connected inside the large cylindrical groove (8). A pressure rod (11) is fixedly inserted through the inner side of the slip ring (10). A spring (12) is movably sleeved on the outer surface of the pressure rod (11). A clamping head (13) is provided at the end of the pressure rod (11) away from the displacement cylinder (7).

4. The foam tape processing and pressing device according to claim 1, characterized in that: The drive mechanism includes a motor (14) fixedly mounted on a base (1), and the output end of the motor (14) is fixedly connected to a first rotating shaft (15), and a drive wheel (16) is fixedly sleeved on the outer surface of the first rotating shaft (15).

5. The foam tape processing and pressing device according to claim 4, characterized in that: The outer surface of the drive wheel (16) is slidably connected to a conveyor belt (17), and the inner surface of the base (1) is rotatably connected to a second rotating shaft (18).

6. The foam tape processing and pressing device according to claim 5, characterized in that: The outer surface of the second rotating shaft (18) is fixedly fitted with a transmission wheel (19), and the outer surface of the transmission wheel (19) is slidably connected to the inner side of the conveyor belt (17) away from the drive wheel (16). The outer surface of the second rotating shaft (18) is fixedly fitted with a gear (20), and the outer surface of the gear (20) is meshed with the outer surface of the rack (6).

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