Nonwoven fabric processing equipment with wide-width heat-sealed joint structure

Abstract

This utility model discloses a nonwoven fabric processing equipment with a wide-width heat-sealing joint structure, relating to the field of nonwoven fabric processing technology. The equipment includes a base plate, above which a heat-sealing mechanism is installed for heating and compacting a composite layer of nonwoven fabric and other materials. The heat-sealing mechanism includes a tension adjustment component positioned above the base plate for adjusting the tension between the nonwoven fabric and the composite layer. A fixed roller strictly limits the conveying path of the fabric layer, ensuring that the fabric layer always moves along a preset trajectory during adjustment. A movable roller cooperates with the fixed roller to form a specific winding path, allowing the fabric layer to fully contact both. When there is a difference in the tension of the fabric layers, the movable frame automatically adjusts its position under the elastic force of the support spring, changing the relative height between the movable and fixed rollers, thereby adjusting the tension of the fabric layers to ensure that all fabric layers have completely consistent tension before entering the heat-pressing stage.

Description

Technical Field

[0001] This utility model relates to the field of nonwoven fabric processing technology, specifically to a nonwoven fabric processing equipment with a wide-width heat-sealed joint structure. Background Technology

[0002] Nonwoven fabric hot pressing equipment is one of the core equipment in the post-processing and forming of nonwoven fabrics. Its core function is to achieve "shape fixation", "structural strengthening" or "functionalization" of nonwoven fabrics or composite layers of nonwoven fabrics with other materials through the synergistic effect of heating and pressurization. It is a key processing link connecting nonwoven fabric raw materials and end products.

[0003] The existing utility model patent with publication number CN222948664U discloses a heat-sealing device for nonwoven fabric processing, belonging to the field of nonwoven fabric processing equipment. It includes a machine frame, with a mounting frame connected to one side of the frame. Heat-sealing rollers and traction rollers are rotatably mounted on the machine frame. A drive mechanism for rotating the heat-sealing rollers and traction rollers is also provided on the machine frame. A heat-sealing blade is detachably mounted on the mounting frame and is fixedly connected to a heating device fixedly mounted on one side of the mounting frame. The heat-sealing blade is heated by the heating device, and as the nonwoven fabric passes over it, the heat-sealing blade melts the fabric, which is then embossed by the heat-sealing rollers. This internal heating before pressing effectively avoids the problem of the heated nonwoven fabric sticking together, resulting in poor heat-sealing performance.

[0004] The aforementioned heat-sealing equipment lacks a tension adjustment mechanism, which may cause wrinkles to appear in the non-woven fabric layer and other fabric layers during the heat-sealing process due to different tensions. In addition, since the length of a single roll of non-woven fabric is limited, the aforementioned heat-sealing device cannot effectively connect two rolls of non-woven fabric, affecting the connection production efficiency. Utility Model Content

[0005] To address the shortcomings of existing technologies, this utility model provides a nonwoven fabric processing equipment with a wide-width heat-sealing joint structure, which solves the problems of cumbersome nonwoven fabric connection operations affecting production efficiency, and wrinkles between the nonwoven fabric and other fabric layers caused by different fabric layer tensions during the heat pressing process.

[0006] To achieve the above objectives, this utility model provides the following technical solution: a nonwoven fabric processing equipment with a wide-width heat-sealing joint structure includes a base plate, and a heat-sealing mechanism is provided above the base plate for heating and compacting the composite layer of nonwoven fabric and other materials. The heat-sealing mechanism includes: Tension adjustment components are located above the base plate and are used to adjust the tension between the nonwoven fabric and the composite layer. The hot pressing assembly includes a guide channel disposed inside the tension adjusting assembly. A sealing plate is fixedly installed at the bottom of the guide channel. An air pump is connected to one side of the sealing plate. An electric heating plate is fixedly installed inside the guide channel. A grid plate is fixedly installed above the guide channel. A pressure plate is movably installed at the top of the guide channel. A downward pressure electric push rod is fixedly installed above the guide channel.

[0007] Preferably, the tension adjustment assembly includes a support frame fixedly installed above the base plate, a guide shaft fixedly installed above the support frame, movable frames movably installed at both ends of the guide shaft, a support spring sleeved on the outer side of the guide shaft, adjusting discs movably installed on the upper and lower sides of the guide shaft, a movable roller movably installed on one side of the movable frame, and a fixed roller movably installed above the support frame.

[0008] Preferably, the guide shaft is fixedly installed on the left and right sides of the support frame, the movable frame is mirror-symmetrically installed at both ends of the guide shaft and forms a sliding connection with the guide shaft, the support spring is located between the movable frame and the adjusting plate, the movable roller forms a rotatable connection with the movable frame, and there are five fixed rollers in total. One is installed at the rear end of the support frame, and the remaining four are divided into two vertically symmetrical groups and installed on the front and rear sides of the support frame with the center of the movable frame as the reference. The fixed rollers form a rotatable connection with the support frame.

[0009] Preferably, the hot pressing assembly further includes a limiting frame disposed above the support frame, an adjusting electric push rod is fixedly installed on the top of the limiting frame, a transmission plate is fixedly installed on the bottom of the adjusting electric push rod, a connecting frame is movably installed below the transmission plate, buffer springs are sleeved on both sides of the connecting frame, and a hot pressing roller is movably installed at the bottom of the connecting frame.

[0010] Preferably, the lower part of the cross-section of the guide channel is a trapezoidal structure, the bottom of the sealing plate is provided with a pipe structure connected to the exhaust end of the air pump, the electric heating plate is installed equidistantly inside the guide channel, the surface of the grid plate is distributed with an array of vertical openings, the pressure plate is fixedly connected to the movable end of the downward electric push rod, and the columnar protrusions on both sides of the pressure plate form a sliding connection with the guide channel.

[0011] Preferably, the transmission plate and the connecting frame are slidably connected, the cylindrical protrusions on both sides of the connecting frame are slidably connected to the transmission plate, the buffer spring is sleeved on the outside of the cylindrical structure on both sides of the connecting frame, and the buffer spring is located between the connecting frame and the transmission plate, and the hot press roller and the connecting frame support are rotatably connected.

[0012] Beneficial effects This invention provides a nonwoven fabric processing equipment with a wide-width heat-sealing joint structure. Compared with the prior art, it has the following advantages: (1) The nonwoven fabric processing equipment with the wide-width heat-sealing joint structure has a fixed roller that strictly limits the conveying path of the fabric layer, ensuring that the fabric layer always moves along the preset trajectory during the adjustment process and will not cause local tension unevenness due to deviation; secondly, the movable roller and the fixed roller cooperate to form a specific winding path, so that the fabric layer can fully contact both of them. The movable frame can slide along the guide shaft. When there is a difference in the tension of the fabric layer, the movable frame will automatically adjust its position under the elastic force of the support spring, change the relative height between the movable roller and the fixed roller, and thus adjust the tension of the fabric layer; at the same time, the adjustment plate can adjust the elastic force of the support spring according to the characteristics of different fabrics, so that the force of the movable roller on the fabric layer is always kept within a suitable range, ensuring that the tension of all fabric layers is completely consistent before entering the hot pressing stage, fundamentally avoiding the problem of hot pressing wrinkles caused by uneven tension.

[0013] (2) The nonwoven fabric processing equipment with the wide-width heat-sealing joint structure can preheat the ends of the nonwoven fabric during the raw material transportation process by cooperating with the guide groove, electric heating plate and air pump in the hot pressing component, so that the ends of the nonwoven fabric have better heat-sealing adhesion; then, the downward electric push rod directly drives the pressure plate to accurately press the two ends of the two rolls of nonwoven fabric, and quickly realize the initial connection; during the subsequent transportation process, the electric push rod, transmission plate, connecting frame and buffer spring are adjusted to drive the hot pressing roller to heat seal the raw material as a whole, while also further reinforcing the connection part of the nonwoven fabric to ensure a firm connection, so that the two rolls of nonwoven fabric are connected end to end, effectively improving production efficiency. Attached Figure Description

[0014] Figure 1 This is a schematic diagram of the overall structure of this utility model; Figure 2 This is a schematic diagram of the movable roller mounting structure of this utility model; Figure 3 This is a schematic diagram of the air pump installation structure of this utility model; Figure 4 This is a schematic diagram of the hot press roller installation structure of this utility model; In the diagram: 1. Base plate; 2. Heat sealing mechanism; 21. Tension adjustment assembly; 211. Support frame; 212. Guide shaft; 213. Movable frame; 214. Support spring; 215. Adjustment disc; 216. Movable roller; 217. Fixed roller; 22. Hot pressing assembly; 221. Guide groove; 222. Sealing plate; 223. Air pump; 224. Heating plate; 225. Mesh plate; 226. Pressure plate; 227. Downward electric push rod; 228. Limiting frame; 229. Adjusting electric push rod; 2210. Transmission plate; 2211. Connecting frame; 2212. Buffer spring; 2213. Hot pressing roller. Detailed Implementation

[0015] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0016] Please see Figure 1-4 This utility model provides a technical solution: a nonwoven fabric processing equipment with a wide-width heat-sealing joint structure, including a base plate 1, a heat-sealing mechanism 2 above the base plate 1 for heating and compacting a composite layer of nonwoven fabric and other materials, the heat-sealing mechanism 2 including: a tension adjustment component 21, disposed above the base plate 1 for adjusting the tension between the nonwoven fabric and the composite layer, the tension adjustment component 21 including a support frame 211 fixedly installed above the base plate 1, a guide shaft 212 fixedly installed above the support frame 211, movable frames 213 movably installed at both ends of the guide shaft 212, a support spring 214 sleeved on the outer side of the guide shaft 212, and adjusting discs 215 movably installed on the upper and lower sides of the guide shaft 212, the movable frame 213... A movable roller 216 is movably installed on one side of the support frame 211, and a fixed roller 217 is movably installed above the support frame 211. A guide shaft 212 is fixedly installed on the left and right sides of the support frame 211. A movable frame 213 is mirror-symmetrically installed at both ends of the guide shaft 212 and forms a sliding connection with the guide shaft 212. A support spring 214 is located between the movable frame 213 and the adjusting plate 215. The movable roller 216 forms a rotatable connection with the movable frame 213. There are five fixed rollers 217 in total. One is installed at the rear end of the support frame 211, and the remaining four are divided into two vertically symmetrical groups and installed on the front and rear sides of the support frame 211 with the center of the movable frame 213 as the reference. The fixed rollers 217 form a rotatable connection with the support frame 211.

[0017] Specifically, the adjusting disc 215 is connected to the guide shaft 212 via a threaded structure. By rotating the adjusting disc 215, the height of one end of the support spring 214 is adjusted, thereby changing the elastic force of the support spring 214 on the other end of the movable frame 213. The positions of the two sets of fixed rollers 217 on the front and rear sides of the movable frame 213 are fixed, which can restrict the position of the non-woven fabric and other composite materials. The non-woven fabric and composite materials need to pass through the fixed rollers 217 of the movable frame 213, then separate and pass around the upper and lower movable rollers 216 respectively, and then pass through the fixed rollers 217 on the rear side of the movable frame 213 to enter the subsequent hot pressing process. The fixed rollers 217 on the front and rear sides of the movable frame 213 restrict the position of the raw material layer on the front and rear sides of the movable roller 216. Since the movable roller 216 will have a height difference with the fixed rollers 217 on the front and rear sides under the influence of the spring, the movable roller 216 and the fixed roller 217 cooperate to tighten the raw material, so as to keep the tension of the raw material consistent.

[0018] The hot pressing assembly 22 includes a guide channel 221 disposed inside the tension adjusting assembly 21. A sealing plate 222 is fixedly installed at the bottom of the guide channel 221. An air pump 223 is connected to one side of the sealing plate 222. An electric heating plate 224 is fixedly installed inside the guide channel 221. A grid plate 225 is fixedly installed above the guide channel 221. A pressure plate 226 is movably installed at the top of the guide channel 221. A downward electric push rod 227 is fixedly installed above the guide channel 221. The hot pressing assembly 22 also includes a limiting frame 228 disposed above the support frame 211. An adjusting electric push rod 229 is fixedly installed at the top of the limiting frame 228. A transmission plate 2210 is fixedly installed at the bottom of the adjusting electric push rod 229. A connecting frame 2211 is movably installed below the transmission plate 2210. Buffer springs 2212 are sleeved on both sides of the connecting frame 2211. The bottom of the connecting frame 2211 is movably... The hot press roller 2213 is installed. The lower part of the cross section of the guide groove 221 is trapezoidal. The bottom of the sealing plate 222 is provided with a pipe structure connected to the exhaust end of the air pump 223. The electric heating plate 224 is installed equidistantly inside the guide groove 221. The surface of the grid plate 225 is distributed with an array of vertical openings. The pressure plate 226 is fixedly connected to the movable end of the downward electric push rod 227. The cylindrical protrusions on both sides of the pressure plate 226 are slidably connected to the guide groove 221. The transmission plate 2210 is slidably connected to the connecting frame 2211. The cylindrical protrusions on both sides of the connecting frame 2211 are slidably connected to the transmission plate 2210. The buffer spring 2212 is sleeved on the outside of the cylindrical structure on both sides of the connecting frame 2211. The buffer spring 2212 is located between the connecting frame 2211 and the transmission plate 2210. The hot press roller 2213 and the support of the connecting frame 2211 can be rotatably connected.

[0019] Specifically, the position of the heating plate 224 is restricted by the guide channel 221. When the heating plate 224 is energized, it will generate heat, causing the temperature inside the guide channel 221 to rise. The airflow generated by the air pump 223 can enter the interior of the guide channel 221 through the tubular structure below the sealing plate 222. Since the bottom of the inner cavity of the guide channel 221 has a three-dimensional structure and the cavity size increases from bottom to top, the airflow decreases in speed and increases in volume after entering the guide channel 221, so as to facilitate the hot air inside the guide channel 221 to be blown towards the non-woven fabric above. The nonwoven fabric is heated, and the downward-pressing electric actuator 227 drives the pressure plate 226 downward to press the beginning and end ends of the two rolls of nonwoven fabric together when connecting them, thus achieving the initial connection of the nonwoven fabric. The hot press roller 2213 has resistance wire wound inside. After being energized, the temperature of the hot press roller 2213 rises. The transmission plate 2210 at the bottom of the downward-pressing electric actuator 227 cooperates with the connecting frame 2211 to ensure pressure while buffering with the buffer spring 2212 to avoid excessive pressure during the hot pressing process, which would affect the heat sealing effect. Specifically, the air pump 223 is model 2RB075H82, the pressure push rod 227 and the adjustment push rod 229 are model QDTE60-35, and all contents not described in detail in this specification are existing technologies known to those skilled in the art.

[0020] During operation, the nonwoven fabric and other material composite layer first enter the tension adjustment component 21 in the heat sealing mechanism 2. The fixed rollers 217 on the support frame 211 first limit the position of the raw material. There are five fixed rollers 217 in total. One is installed at the rear end of the support frame 211, and the other four are divided into two vertically symmetrical groups, installed on the front and rear sides of the support frame 211 with the center of the movable frame 213 as the reference. The raw material passes through the fixed rollers 217 of the movable frame 213, separates, and passes around the movable rollers 216 on the upper and lower sides, and then exits through the fixed rollers 217 at the rear end of the support frame 211. At this time, the adjusting discs 215 on the upper and lower sides of the guide shaft 212 can be rotated. The adjusting discs 215 change their position on the guide shaft 212 through the threaded structure, thereby adjusting the elastic force of the support spring 214 on the movable frame 213. The movable frame 213 slides along the guide shaft 212, so that the movable rollers 216 and the fixed rollers 217 cooperate to tighten the raw material and ensure that the tension of the raw material is consistent.

[0021] Next, the raw material enters the hot pressing assembly 22, first reaching the top of the guide channel 221. The electric heating plate 224 inside the guide channel 221 is energized and heated, raising the internal temperature of the guide channel 221. The airflow generated by the air pump 223 enters the guide channel 221 through the pipe structure at the bottom of the sealing plate 222. The lower part of the cross-section of the guide channel 221 has a trapezoidal structure. After the airflow enters, it decelerates and expands, driving the hot air through the vertical opening array on the surface of the mesh plate 225 to blow onto the raw material, preheating the raw material. If it is necessary to connect two rolls of nonwoven fabric, the downward pressing electric push rod 227 above the guide channel 221 drives the pressure plate 226 to move down. The columnar protrusions on both sides of the pressure plate 226 slide and connect with the guide channel 221, thereby pressing the two rolls of nonwoven fabric together to achieve a preliminary connection.

[0022] The raw material is then conveyed to the bottom of the limiting frame 228. The adjusting electric push rod 229 at the top of the limiting frame 228 pushes the transmission plate 2210 downward. The transmission plate 2210 drives the connecting frame 2211 downward. The cylindrical protrusions on both sides of the connecting frame 2211 are slidably connected to the transmission plate 2210. Buffer springs 2212 are sleeved on both sides of the connecting frame 2211. The buffer springs 2212 are sleeved on the outside of the cylindrical structures on both sides of the connecting frame 2211, located between the connecting frame 2211 and the transmission plate 2210, and can buffer pressure. At the same time, the hot pressure roller 2213 at the bottom of the connecting frame 2211, the support frame 211, and the fixed roller 217 at the rear end clamp the raw material into contact. The hot pressure roller 2213 has a resistance wire wound inside, which heats up after being energized, finally completing the heat sealing process of the raw material.

[0023] It should be noted that, in this document, relational terms such as "first" and "second" are used only to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such process, method, article, or apparatus.

[0024] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A nonwoven fabric processing equipment with a wide-width heat-sealed joint structure, characterized in that: The base plate (1) is provided with a heat sealing mechanism (2) above it for heating and compacting the composite layer of nonwoven fabric and other materials. The heat sealing mechanism (2) includes: Tension adjustment component (21) is set above the base plate (1) to adjust the tension between the nonwoven fabric and the composite layer; The hot pressing assembly (22) includes a guide channel (221) disposed inside the tension adjusting assembly (21). A sealing plate (222) is fixedly installed at the bottom of the guide channel (221). An air pump (223) is connected to one side of the sealing plate (222). An electric heating plate (224) is fixedly installed inside the guide channel (221). A grid plate (225) is fixedly installed above the guide channel (221). A pressure plate (226) is movably installed at the top of the guide channel (221). A downward electric push rod (227) is fixedly installed above the guide channel (221).

2. The nonwoven fabric processing equipment with a wide-width heat-sealing joint structure according to claim 1, characterized in that: The tension adjustment assembly (21) includes a support frame (211) fixedly installed above the base plate (1), a guide shaft (212) fixedly installed above the support frame (211), movable frames (213) movably installed at both ends of the guide shaft (212), a support spring (214) sleeved on the outside of the guide shaft (212), an adjustment disc (215) movably installed on the upper and lower sides of the guide shaft (212), a movable roller (216) movably installed on one side of the movable frame (213), and a fixed roller (217) movably installed above the support frame (211).

3. The nonwoven fabric processing equipment with a wide-width heat-sealing joint structure according to claim 2, characterized in that: The guide shaft (212) is fixedly installed on the left and right sides of the support frame (211). The movable frame (213) is mirror-symmetrically installed at both ends of the guide shaft (212) and forms a sliding connection with the guide shaft (212). The support spring (214) is located between the movable frame (213) and the adjusting plate (215). The movable roller (216) forms a rotatable connection with the movable frame (213). There are five fixed rollers (217). One is installed at the rear end of the support frame (211), and the remaining four are divided into two vertically symmetrical groups and installed on the front and rear sides of the support frame (211) with the center of the movable frame (213) as the reference. The fixed roller (217) forms a rotatable connection with the support frame (211).

4. The nonwoven fabric processing equipment with a wide-width heat-sealing joint structure according to claim 2, characterized in that: The hot pressing assembly (22) also includes a limiting frame (228) disposed above the support frame (211). An adjusting electric push rod (229) is fixedly installed on the top of the limiting frame (228), and a transmission plate (2210) is fixedly installed on the bottom of the adjusting electric push rod (229). A connecting frame (2211) is movably installed below the transmission plate (2210). Buffer springs (2212) are sleeved on both sides of the connecting frame (2211), and a hot pressing roller (2213) is movably installed at the bottom of the connecting frame (2211).

5. The nonwoven fabric processing equipment with a wide-width heat-sealing joint structure according to claim 4, characterized in that: The lower part of the cross section of the guide groove (221) is a trapezoidal structure. The bottom of the sealing plate (222) is provided with a pipe structure connected to the exhaust end of the air pump (223). The electric heating plate (224) is installed at equal intervals inside the guide groove (221). The surface of the grid plate (225) is distributed with an array of vertical openings. The pressure plate (226) is fixedly connected to the movable end of the lower electric push rod (227), and the columnar protrusions on both sides of the pressure plate (226) form a sliding connection with the guide groove (221).

6. The nonwoven fabric processing equipment with a wide-width heat-sealing joint structure according to claim 4, characterized in that: The transmission plate (2210) and the connecting frame (2211) form a sliding connection. The cylindrical protrusions on both sides of the connecting frame (2211) form a sliding connection with the transmission plate (2210). The buffer spring (2212) is sleeved on the outside of the cylindrical structure on both sides of the connecting frame (2211), and the buffer spring (2212) is located between the connecting frame (2211) and the transmission plate (2210). The hot press roller (2213) and the support of the connecting frame (2211) can form a rotatable connection.

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