A production device for controlling the uniformity of air bubbles in particle-foamed cushioning foam tape

Abstract

This utility model relates to the field of particle foaming technology and discloses a production device for controlling the uniformity of air bubbles in particle foamed buffer foam tape. It includes a filter tank assembly for holding and filtering foamed particles. The upper end and interior of the filter tank assembly are equipped with a stirring component for stirring the foamed particles and base material. The lower end of the filter tank assembly is equipped with a mixing tank assembly for mixing the base material. The outer side of the mixing tank assembly is equipped with a vibration component for vibrating the base material. The lower end of the mixing tank assembly is equipped with a discharge hopper for discharging the material. The device ensures the uniformity of raw materials from the source, achieving uniform mixing and effectively improving the consistency and regularity of air bubble size distribution in the foam tape. Simultaneously, it avoids material blockage and ensures continuous production.

Description

Technical Field

[0001] This utility model relates to the field of particle foaming technology, specifically to a production device for controlling the uniformity of air bubbles in particle foaming buffer foam tape. Background Technology

[0002] Particle-foamed cushioning tape, due to its excellent cushioning and shock absorption properties, lightweight nature, and weather resistance, has been widely used in express packaging protection, electronic device cushioning and bonding, and household product sealing and shock absorption. Its core performance directly depends on the uniformity of the air bubbles inside the foam substrate, the consistency of bubble size, and the regular distribution of the foam tape. This allows the tape to evenly distribute impact force under stress, preventing localized compression and breakage.

[0003] However, existing devices mostly use a single-layer screen to filter foamed particles, which can only remove large-sized impurities and cannot effectively separate particles that are agglomerated or have excessively large particle size deviations. This leads to over-foaming in large particle areas and under-foaming in small particle areas during subsequent mixing, directly causing uneven bubble size. Existing mixing tanks are mostly rigid structures, lacking elastic buffers and auxiliary vibration designs. Raw materials are prone to accumulating and clogging on the screen or tank walls during flow, which not only affects production efficiency but also causes excessively long local mixing time due to raw material retention, further aggravating bubble distribution deviations. Therefore, those skilled in the art provide a particle foaming buffer foam tape bubble uniformity control production device to solve the problems mentioned in the background art. Utility Model Content

[0004] The purpose of this invention is to provide a production device for controlling the uniformity of air bubbles in particle-foamed buffer foam tape, thereby solving the problems mentioned in the above-mentioned technical background.

[0005] This utility model provides the following technical solution: a production device for controlling the uniformity of air bubbles in particle-foamed buffer foam tape, comprising a filter tank assembly for holding and filtering foamed particles, a stirring assembly for stirring the foamed particles and base material is provided at the upper end and inside of the filter tank assembly, a mixing tank assembly for mixing the base material is provided at the lower end of the filter tank assembly, a vibration assembly for vibrating the base material is provided on the outside of the mixing tank assembly, and a discharge hopper for discharging material is provided at the lower end of the mixing tank assembly.

[0006] As a preferred embodiment of the above technical solution, the filter tank assembly includes a tank body, a first feed inlet fixedly connected to the upper side of the outer wall of the tank body, and a through-hole formed between the first feed inlet and the inner cavity of the tank body; a second feed inlet fixedly connected to the center of the outer wall of the tank body, and a through-hole formed between the second feed inlet and the inner cavity of the tank body; a first screen fixedly connected to the upper side of the inner wall of the tank body; and a second screen fixedly connected to the center of the inner wall of the tank body.

[0007] As a preferred embodiment of the above technical solution, the stirring assembly includes a first motor, which is fixedly connected to the center of the upper end of the tank. The lower end of the first motor is fixedly connected to a stirring shaft that passes through the inner cavity of the upper end of the tank. A first stirring blade is fixedly connected to the upper side of the outer wall of the stirring shaft, a second stirring blade is fixedly connected to the center of the outer wall of the stirring shaft, and a third stirring blade is fixedly connected to the lower side of the outer wall of the stirring shaft.

[0008] As a preferred embodiment of the above technical solution, the mixing tank assembly includes a first flexible tank, the upper end of which is fixedly connected to a second screen, and the lower end of which is fixedly connected to a third screen. Four first springs are fixedly connected to the outer side of the upper end of the third screen, and the upper ends of the four first springs are fixedly connected to the lower side of the inner wall of the tank.

[0009] As a preferred embodiment of the above technical solution, the lower end of the third screen is fixedly connected to a second soft can, the lower end of the second soft can is fixedly connected to a fourth screen, and the upper outer side of the fourth screen is fixedly connected to four second springs, with the upper ends of the four second springs being fixedly hinged to the lower outer side of the first soft can.

[0010] As a preferred embodiment of the above technical solution, the vibration assembly 4 includes a second motor 4, which is fixedly connected to the upper end of the third screen 32 on one side. The output end of the second motor 4 is fixedly connected to a rotating rod 42. Two rotating shafts 43 are rotatably connected to both ends of the rotating rod 42. Two transmission rods 44 are rotatably connected to the ends of the two rotating shafts 43 away from the rotating rod 42. Connecting rods 45 are rotatably connected to the ends of the two transmission rods 44 away from the rotating shafts 43. A fixing sleeve 46 is fixedly connected to the outer wall of the connecting rod 45, and the lower end of the fixing sleeve 46 is fixedly connected to the fourth screen 35.

[0011] Compared with the prior art, the beneficial effects of this utility model are as follows: This utility model uses a double-layer grading screen and a layered feed inlet design in the filter tank assembly. The first and second screens can achieve precise sorting of raw material particle size. The first and second feed inlets respectively feed foaming particles and base material, avoiding initial mixing and stratification, ensuring the uniformity of raw materials entering subsequent stages, and reducing the difference in bubble size caused by uneven raw materials from the source. The double-layer soft tank with elastic support and vibration component linkage design of the mixing tank assembly of this utility model allows the first and second soft tanks to elastically deform with vibration. Combined with the elastic support of the first and second elastic plates for the screen, the screen can be slightly shaken under the drive of the vibration component. At the same time, the vibration component converts the rotational motion into reciprocating vibration through the motor and connecting rod transmission, which not only enhances the deep mixing of raw materials in the soft tank, but also shakes off the raw materials accumulated on the screen surface in real time, effectively preventing blockage, and taking into account both mixing uniformity and production continuity. Attached Figure Description

[0012] Figure 1 A three-dimensional structural diagram of a production device for controlling the uniformity of air bubbles in particle-foamed buffer foam tape. Figure 2 A three-dimensional structural diagram of the stirring component of a particle-foamed buffer foam tape production device for controlling the uniformity of air bubbles. Figure 3 A three-dimensional structural cross-sectional view of a production device for controlling the uniformity of air bubbles in particle-foamed buffer foam tape. Figure 4 This is a three-dimensional structural diagram of a vibration component in a particle-foamed buffer foam tape production device for controlling the uniformity of air bubbles.

[0013] In the diagram: 1. Filter tank assembly; 101. Tank body; 102. First feed inlet; 103. Second feed inlet; 104. First screen; 105. Second screen; 2. Stirring assembly; 201. First motor; 202. Stirring shaft; 203. First stirring paddle; 204. Second stirring paddle; 205. Third stirring paddle; 3. Mixing tank assembly; 301. First flexible tank; 302. Third screen; 303. First spring; 304. Second flexible tank; 305. Fourth screen; 306. Second spring; 4. Vibration assembly; 401. Second motor; 402. Rotating rod; 403. Rotating shaft; 404. Transmission rod; 405. Connecting rod; 406. Fixed sleeve; 5. Discharge hopper. Detailed Implementation

[0014] The technical solutions of the present invention will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present invention.

[0015] Please see Figure 1 As shown, this utility model provides a technical solution: a production device for controlling the uniformity of air bubbles in particle foamed buffer foam tape, including a filter tank assembly 1 for holding and filtering foamed particles, a stirring assembly 2 for stirring the foamed particles and base material at the upper end and inside of the filter tank assembly 1, a mixing tank assembly 3 for mixing the base material at the lower end of the filter tank assembly 1, a vibration assembly 4 for vibrating the base material at the outside of the mixing tank assembly 3, and a discharge hopper 5 for discharging material at the lower end of the mixing tank assembly 3.

[0016] The filter tank assembly 1 is the first checkpoint of the equipment, responsible for holding and filtering the core raw material foamed particles, providing a container space for temporary storage and processing of particles, and filtering out impurities, clumps, or particles with excessively large particle size deviations. The stirring assembly 2 performs secondary processing on the filtered foamed particles, solving the problem of local particle agglomeration, stirring the foamed particles, and breaking the static friction between particles through mechanical stirring to prevent the filtered particles from re-agglomerating, ensuring that the particles enter the mixing stage in a small dispersed state. The mixing tank assembly 3 is responsible for uniformly mixing the dispersed foamed particles with the base material. The vibration assembly 4 provides mechanical vibration power to the mixing tank assembly 3 to solve the problems of uneven mixing and raw material blockage. The discharge hopper 5 ensures that the mixed raw material is discharged in a stable state.

[0017] As one implementation method in this embodiment, please refer to Figure 3 As shown, the filter tank assembly includes a tank body. A first feed inlet is fixedly connected to the upper side of the outer wall of the tank body, and a slot is formed between the first feed inlet and the inner cavity of the tank body. A second feed inlet is fixedly connected to the center of the outer wall of the tank body, and a slot is formed between the second feed inlet and the inner cavity of the tank body. A first screen is fixedly connected to the upper side of the inner wall of the tank body, and a second screen is fixedly connected to the center of the inner wall of the tank body.

[0018] The tank 101 provides a closed processing space to prevent raw materials from being contaminated by external factors during screening and temporary storage. It also secures other components, providing a mounting platform for the feed inlet and screen, ensuring precise positioning of each component and forming an orderly path for feeding, screening, and descent. Furthermore, it provides a brief residence space for the screened raw materials, ensuring that the subsequent mixing component 2 can stably receive and disperse them. The first feed inlet 102 and the second feed inlet 103 prevent initial mixing and agglomeration. The first feed inlet 102, installed near the upper side of the tank 101, is used to add foaming particles, allowing the particles to enter from the top of the tank 101 and have sufficient falling distance to contact the first layer of screen, preventing particle accumulation at the tank opening. The second feed inlet 103, installed near the center of the tank 101, is used to add the fusion base. The base material enters from the middle of the tank 101, where it initially contacts the pre-screened particles falling from the top above the second layer of screens. This prevents the two materials from directly accumulating and agglomerating at the bottom of the tank. Using a single feed inlet for both materials can easily cause particles and base material to separate due to density differences or clump together due to morphological differences. Layered feeding allows the two materials to enter in separate areas and gradually come into contact, reducing initial mixing resistance from the source. The first screen 104 and the second screen 105 achieve uniform particle size of the raw materials. The first screen 104 ensures that there are no oversized particles entering the next stage, preventing over-expansion of oversized particles during foaming and the formation of large bubbles. The second screen 105 ensures that there are no tiny clumps of raw materials that finally enter the mixing component 2, preventing the formation of air bubbles and voids at the clumps during foaming, and also ensures that the particles and base material are initially fused together.

[0019] As one implementation method in this embodiment, please refer to Figure 2 As shown, the stirring assembly 2 includes a first motor 201, which is fixedly connected to the center of the upper end of the tank 101. The lower end of the first motor 201 is fixedly connected to a stirring shaft 202 that passes through the inner cavity of the upper end of the tank 101. A first stirring paddle 203 is fixedly connected to the upper side of the outer wall of the stirring shaft 202. A second stirring paddle 204 is fixedly connected to the center of the outer wall of the stirring shaft 202. A third stirring paddle 205 is fixedly connected to the lower side of the outer wall of the stirring shaft 202.

[0020] The first motor 201 provides uniform rotational power, directly driving the stirring shaft 202 below to rotate through its output end. It is the power source for the entire stirring assembly 2. The upper end of the stirring shaft 202 is fixedly connected to the output end of the first motor 201, and the lower end extends vertically to the lower side of the tank 101. It synchronously transmits the rotational power of the first motor 201 to the three stirring blades on the outer wall of the shaft, ensuring that the three blades rotate at the same speed and in the same direction. The first stirring blade 203 stirs the foamed particles that have just passed through the first screen 104, dispersing the agglomerated particles into single particles or small dispersed clusters, so as to prevent clumps from enveloping the base material when it is mixed with the base material later. The second stirring blade 204 mixes and stirs the foamed particles that have just passed through the second screen 105 and the added base material, so as to achieve the initial uniform distribution of the two raw materials. The third stirring blade 205 stirs the semi-uniform mixture after the first two steps, ensuring that the mixture does not have too much density difference, laying the foundation for the deep mixing of the mixing tank assembly 3.

[0021] As one implementation method in this embodiment, please refer to Figure 3 As shown, the mixing tank assembly 3 includes a first flexible tank 301. The upper end of the first flexible tank 301 is fixedly connected to the second screen 105. The lower end of the first flexible tank 301 is fixedly connected to a third screen 302. Four first springs 303 are fixedly connected to the outer side of the upper end of the third screen 302, and the upper ends of the four first springs 303 are fixedly connected to the lower side of the inner wall of the tank body 101.

[0022] The first flexible container 301 prevents raw materials from splashing or leaking during the mixing process. At the same time, it allows the raw materials to fully collide and fuse under vibration within a limited space. Vibration mixing is achieved by relying on elasticity. When the vibration component 4 drives the third screen 302 to shake, the first flexible container 301 will elastically deform synchronously with the screen. This deformation will actively stir the internal raw materials, break up the local agglomeration of particles and base materials, and achieve a more efficient mixing effect than a rigid container. The third screen 302 allows the raw materials to have sufficient residence time in the first flexible container 301 to ensure thorough vibration mixing, filter out the small agglomerates that are reformed during the mixing process, and further ensure the raw materials entering the lower layer. The four first elastic plates 303 provide non-rigid support for the third screen 302 and the first flexible container 301. If the screen is directly rigidly fixed to the container 101, the container 101 will shake violently synchronously during vibration. The elastic plates can buffer the vibration force, allowing only the screen and the flexible container to vibrate locally.

[0023] As one implementation method in this embodiment, please refer to Figure 3 As shown, the lower end of the third screen 302 is fixedly connected to the second soft can 304, the lower end of the second soft can 304 is fixedly connected to the fourth screen 305, and the upper outer side of the fourth screen 305 is fixedly connected to four second springs 306, and the upper ends of the four second springs 306 are fixedly hinged to the lower outer side of the first soft can 301.

[0024] Although the upper mixing unit completes the initial mixing, there may be uneven particle distribution in some areas. The elastic deformation of the second soft tank 304 caused by vibration will further agitate the raw materials, allowing the particles and base material to upgrade from macroscopic uniformity to microscopic uniformity. The fourth screen 305 allows the raw materials in the second soft tank 304 sufficient time to complete the in-depth mixing, preventing insufficiently mixed raw materials from directly entering the discharge hopper 5, and removing small lumps that were not filtered out in the previous stage, ensuring that the output raw materials are free of agglomerated particles. The screen is directly connected to the discharge hopper 5, and the uniform raw materials after screening can fall smoothly into the discharge hopper 5, forming a seamless connection between mixing, screening, and discharge. The four second spring plates 306 are similar to the first spring plate 303. The second spring plates 306 can buffer the impact of vibration on the fourth screen 305, while amplifying the amplitude and enhancing the mixing intensity of the raw materials in the second soft tank 304.

[0025] As one implementation method in this embodiment, please refer to Figure 4As shown, the vibration assembly 4 includes a second motor 401, which is fixedly connected to the upper end of the third screen 302 on one side. The output end of the second motor 401 is fixedly connected to a rotating rod 402. Two rotating shafts 403 are rotatably connected to both ends of the rotating rod 402. Two transmission rods 404 are rotatably connected to the ends of the two rotating shafts 403 away from the rotating rod 402. Connecting rods 405 are rotatably connected to the ends of the two transmission rods 404 away from the rotating shafts 403. A fixing sleeve 406 is fixedly connected to the outer wall of the connecting rod 405, and the lower end of the fixing sleeve 406 is fixedly connected to the fourth screen 305.

[0026] The second motor 401 provides the original circumferential rotational power and is the energy source of the entire vibration assembly 4. It directly drives the rotating rod 402 to rotate through the output end. The rotating rod 402 acts as a power distribution and transmission rod, synchronously transmitting the rotational power of the motor to the rotating shafts 403 at both ends to ensure symmetrical movement on both sides. The rotating shaft 403 converts the circumferential rotational motion of the rotating rod 402 into the linear reciprocating motion of the transmission rod 404. When rotating, it will drive the transmission rod 404 to swing. The transmission rod 404 synchronously transmits the reciprocating motion converted by the rotating shaft 403 to both ends of the connecting rod 405, ensuring that the connecting rod 405 is subjected to balanced force and avoiding unilateral tilting. The connecting rod 405 integrates the reciprocating motion of the two transmission rods 404 to form a stable overall reciprocating vibration, preparing for subsequent transmission. The fixed sleeve 406 stably transmits the reciprocating vibration of the connecting rod 405 to the screen and soft tank of the mixing tank assembly 3, preventing the vibration from being lost or shifted during transmission.

[0027] Working Principle: First, foamed particles are fed into the tank 101 through the first inlet 102 of the filter tank assembly 1, while the base material is fed in through the second inlet 103. This layered feeding design avoids stratification due to density differences when the two raw materials first come into contact, reducing the difficulty of subsequent mixing. The foamed particles first pass through the first screen 104 on the upper side of the tank 101 to filter out particles that are too large or external impurities. The particles and base material after preliminary screening continue to flow downwards and then undergo a second screening through the second screen 105 at the center of the tank 101 to further remove particle clumps and small impurities, ultimately obtaining raw materials with uniform particle size, laying the foundation for subsequent uniform mixing. Next, the first motor 201 in the stirring assembly 2 is started. The motor output drives the vertical stirring shaft 202 to rotate at a uniform speed. The three layers of stirring blades on the shaft work synchronously. The upper first stirring blade 203 corresponds to the area above the first screen 104, breaking up the foamed particles and preventing particle clumping. The second stirring paddle 204 in the middle layer corresponds to the area above the second screen 105, and initially mixes the particles from the secondary screening with the base material, breaking down local density differences in the raw materials. The initially mixed raw materials fall through the second screen 105 into the first flexible tank 301 of the mixing tank assembly 3. The lower end of the stirring shaft 202 extends vertically into the first flexible tank 301, and a third stirring paddle 205 is fixedly connected to its lower outer wall to perform deep mixing of the initially mixed raw materials, ensuring that the particles and base material are evenly distributed in the vertical direction, avoiding the stratification problem of more particles in the upper layer and more base material in the lower layer. Simultaneously, the second motor 401 of the vibration assembly 4 is started, and the motor drives the rotating rod 402 to rotate. The two ends of the rotating rod 402 The rotating shaft 403 drives the transmission rod 404 to reciprocate, which in turn pulls the connecting rod 405 and the fixed sleeve 406 on the outer wall to vibrate. The vibration force is transmitted to the third screen 302 connected to the fixed sleeve 406, and through the third screen 302, the first flexible container 301 made of elastic material undergoes elastic deformation. The raw material in the first flexible container 301 shakes continuously with the deformation of the container 101 and the vibration of the screen, achieving deep mixing. At the same time, the first elastic piece 303 provides elastic support, amplifies the vibration amplitude of the screen, effectively shakes off the raw material accumulated on the screen surface, and prevents blockage. The deeply mixed raw material falls through the third screen 302 into the second flexible container 304, repeating the above vibration mixing process. The second spring 306 supports the vibration of the fourth screen 305, and the elastic deformation of the second soft can 304 further enhances the mixing effect. The fourth screen 305 performs a final screening of the raw materials to ensure that there are no residual lumps in the output raw materials. The uniform raw materials after deep processing by the mixing tank component 3 finally fall into the discharge hopper 5 below through the fourth screen 305. The funnel-shaped discharge hopper 5 can collect the raw materials to form a stable and uniform discharge flow rate, which is directly connected to the subsequent extrusion foaming equipment. At this time, the raw materials have reached a state of uniform particle size, thorough mixing, and no impurities clogging them. They can be uniformly heated and expanded in the extrusion foaming process, and finally generate a buffer foam tape substrate with uniform bubble size and regular distribution.

[0028] The above embodiments are only used to illustrate the technical solution of this utility model, and are not intended to limit it.

Claims

1. A particle foaming cushion foam tape bubble uniformity control production device, characterized by: The filter tank assembly (1) is used to hold and filter foamed particles. The upper end and the interior of the filter tank assembly (1) are provided with a stirring assembly (2) for stirring the foamed particles and the base material. The lower end of the filter tank assembly (1) is provided with a mixing tank assembly (3) for mixing the base material. The outside of the mixing tank assembly (3) is provided with a vibration assembly (4) for vibrating the base material. The lower end of the mixing tank assembly (3) is provided with a discharge hopper (5) for discharging the material.

2. The particle foaming cushion foam tape bubble uniformity control production device according to claim 1, characterized in that: The filter tank assembly (1) includes a tank body (101). A first feed inlet (102) is fixedly connected to the upper side of the outer wall of the tank body (101), and the first feed inlet (102) and the inner cavity of the tank body (101) are connected through a slot. A second feed inlet (103) is fixedly connected to the center of the outer wall of the tank body (101), and the second feed inlet (103) and the inner cavity of the tank body (101) are connected through a slot. A first screen (104) is fixedly connected to the upper side of the inner wall of the tank body (101), and a second screen (105) is fixedly connected to the center of the inner wall of the tank body (101).

3. The particle foaming cushion foam tape bubble uniformity control production device according to claim 2, characterized in that: The stirring assembly (2) includes a first motor (201), which is fixedly connected to the center of the upper end of the tank (101). The lower end of the first motor (201) is fixedly connected to a stirring shaft (202) that passes through the inner cavity of the upper end of the tank (101). A first stirring paddle (203) is fixedly connected to the upper side of the outer wall of the stirring shaft (202). A second stirring paddle (204) is fixedly connected to the center of the outer wall of the stirring shaft (202). A third stirring paddle (205) is fixedly connected to the lower side of the outer wall of the stirring shaft (202).

4. The particle foaming cushion foam tape bubble uniformity control production device according to claim 3, characterized in that: The mixing tank assembly (3) includes a first soft tank (301), the upper end of the first soft tank (301) is fixedly connected to a second screen (105), the lower end of the first soft tank (301) is fixedly connected to a third screen (302), the upper outer side of the third screen (302) is fixedly connected to four first springs (303), and the upper ends of the four first springs (303) are fixedly connected to the lower side of the inner wall of the tank body (101).

5. The particle foaming cushion foam tape bubble uniformity control production device according to claim 4, characterized in that: The lower end of the third screen (302) is fixedly connected to the second soft can (304), the lower end of the second soft can (304) is fixedly connected to the fourth screen (305), and the upper outer side of the fourth screen (305) is fixedly connected to four second springs (306), and the upper ends of the four second springs (306) are fixedly hinged to the lower outer side of the first soft can (301).

6. The particle foaming cushion foam tape bubble uniformity control production device according to claim 1, characterized in that: The vibration assembly (4) comprises a second motor (401), the second motor (401) is fixedly connected to the upper end of the third screen (302) on one side, the output end of the second motor (401) is fixedly connected with a rotating rod (402), both ends of the rotating rod (402) are rotatably connected with two rotating shafts (403), one end of the two rotating shafts (403) away from the rotating rod (402) is rotatably connected with two transmission rods (404), one end of the two transmission rods (404) away from the rotating shaft (403) is rotatably connected with a connecting rod (405), the outer wall of the connecting rod (405) is fixedly connected with a fixed sleeve (406), and the lower end of the fixed sleeve (406) is fixedly connected with the fourth screen (305).

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