Processing equipment for core body of hygienic product

Abstract

The invention relates to the field of hygienic product processing, in particular to hygienic product core processing equipment which comprises a mold roller, a plurality of forming grooves are formed in the circumferential side face of the mold roller, and the forming grooves in the mold roller are sequentially distributed around the circumferential side face of the mold roller; the forming groove rotates to the feeding area, and the mixed materials enter the forming groove; the hot air setting area comprises a hot air pipe, and an air outlet of the hot air pipe faces the mold roller; the discharging area is an area where the product is separated from the forming groove; along with the rotation of the mold roller, the forming groove rotates from the hot air setting area to the discharging area for discharging; a negative pressure cavity is formed in the mold roller, and the negative pressure cavity is communicated with the forming groove after mixed materials enter the forming groove and before the mixed materials are discharged. By means of the equipment, the dumbbell-shaped core body can be machined, meanwhile, generation of waste materials is reduced, and material waste is reduced.

Description

Technical Field

[0001] The invention relates to the field of sanitary product processing, and in particular to a sanitary product core processing device. Background Art

[0002] There are many kinds of sanitary products, such as diapers, pull-up pants, sleeping pants, etc. The core of sanitary products is the key part for absorbing liquid. After the body fluid is discharged from the body, it penetrates into the core through the surface of the sanitary products, and the core absorbs and contains the liquid. At present, the core is mostly designed and cut into a dumbbell shape (the width of the two ends of the core is greater than the width of the middle part), the purpose is to wrap the buttocks at the back of the body and part of the front of the body. Especially when used by adults, the dumbbell shape can more effectively prevent leakage in the buttocks area compared to the traditional straight strip type, and it is safer to use.

[0003] The core of current sanitary products is composed of fibers and absorbent resins. The fibers and absorbent resins are interwoven together, and the fibers wrap the absorbent resins. The fibers make the core surface soft and improve the comfort of contact between sanitary products and skin. The absorbent resins mainly absorb and store liquids.

[0004] However, the current method of preparing the core is to first compound the fiber and absorbent resin together to form a square structure, and then cut it to cut out a dumbbell-shaped core. However, as much as 40% of the waste is cut off around it. These wastes are mixed with different types of hot melt adhesives, different types of polymer absorbent resins (SAP), and various fibers (such as 6D×51mm composite fibers, 2D×38mm composite fibers, 4D×51mm composite fibers, and 7D×64mm hollow spiral fibers). Since these components in these wastes are compounded and mixed together, these mixed wastes can no longer be reused, resulting in huge waste. The cost of wasted materials will be spread over the selling price of sanitary products, thereby bringing unnecessary purchase price thresholds to consumers.

[0005] At the same time, in the prior art, when cutting the core, the cutting tool has high hardness and poor toughness, especially the expensive carbide tool, which has high cutting efficiency but is more brittle. The core contains hard granular SAP, and the tool is very easy to break when cutting at high speed. This will not only waste the cost of the tool itself, but also cause a decrease in production efficiency due to tool replacement. In addition, during the cutting process, the composite hot melt adhesive and various fibers of different materials will adhere to the tool blade, resulting in poor cutting and greatly reducing production efficiency. Summary of the invention

[0006] The present invention aims to provide a core processing device for sanitary products, so as to process a core with a certain shape without cutting, thereby reducing the generation of waste materials in the preparation process and reducing the waste of materials.

[0007] To achieve the above object, the present invention adopts the following technical solution: a core processing device for sanitary products, comprising: A rotatable mold roller, a plurality of molding grooves are arranged on the circumferential side of the mold roller, and the plurality of molding grooves on the mold roller are sequentially distributed around the circumferential side of the mold roller; Feeding area, the forming tank rotates to the feeding area, and the mixed material enters the forming tank; A hot air shaping area, the hot air shaping area includes a hot air pipe, and an air outlet of the hot air pipe faces the mold roller; The discharge area is the area where the product is separated from the forming tank. As the mold roller rotates, the forming tank rotates from the hot air shaping area to the discharge area for discharge. A negative pressure cavity is arranged inside the mold roller, and after the mixed material enters the molding groove and before the mixed material is discharged, the negative pressure cavity is communicated with the molding groove.

[0008] The principle and advantage of this solution are: the feeding area in this solution is used to add the mixed material (the mixed material includes fibers and water-absorbing resin, and the fibers and water-absorbing resin are evenly mixed) into the forming groove, thereby realizing the feeding of the forming groove of the mold roller. The forming groove in this application is set to a specific shape, such as a dumbbell shape, so that a core body of a specific shape can be formed.

[0009] After the mixed material enters the molding groove, the negative pressure chamber and the molding groove are connected, and there is negative pressure in the negative pressure chamber. The negative pressure in the negative pressure chamber acts on the molding groove, thereby adsorbing the fibers and water-absorbent resin in the molding groove. The material is shaped in the molding groove under the action of negative pressure adsorption, thereby realizing negative pressure shaping. The negative pressure shaping in this application refers to the intricate fibers being intertwined with each other under the action of negative pressure adsorption and not easy to disperse. Since the molding groove is a specific shape, the fibers and water-absorbent resin automatically form corresponding shapes after being shaped.

[0010] Then the mold roller continues to rotate, and the product rotates to the hot air shaping area. The hot air pipe blows hot air into the molding groove, thereby realizing hot air shaping. Hot air shaping refers to the hot air heating of the molded product, which makes the fibers (such as fiber PE layer) soften and adhere to each other, thereby making the product structure more stable.

[0011] As the mold roller continues to rotate, the shaped product rotates to the discharge area, and the product is separated from the molding groove, thus realizing discharge.

[0012] After the material is discharged, the forming trough is vacated, and the forming trough is rotated to the feeding area again to repeat the above process.

[0013] Since there are multiple forming grooves in this solution and they are distributed circumferentially around the circumferential side of the mold roller, as the mold roller continues to rotate, the multiple forming grooves on the mold roller continuously repeat the above process in a cycle, thereby achieving continuous batch production of products of specific shapes and ensuring production efficiency.

[0014] This solution has the following beneficial effects: The molding groove in the present application has a molding function. The mixed material in the molding groove is adsorbed in the molding groove under the action of negative pressure for negative pressure shaping, thereby directly forming a structure of a specific shape. The fibers are firmly interwoven together under the action of negative pressure, realizing the composite of the fibers and the water-absorbing resin. At the same time, combined with hot air shaping, the product shaping effect is better and the structure after shaping is more stable. After the fiber and the water-absorbing resin are compositely shaped, a product of a specific shape is directly formed, and no subsequent cutting and shaping is required. Compared with the core body cut into corresponding shapes in the prior art, the generation of waste is greatly reduced, and the waste of materials is reduced.

[0015] At the same time, since the core body does not need to be cut, it can avoid tool damage, reduce tool waste, and avoid the reduction of production efficiency caused by tool replacement, and the production efficiency is improved compared with the existing technology. At the same time, since there is no need for tool cutting, there will be no fiber adhesion to the tool blade, which is conducive to improving production efficiency.

[0016] During the negative pressure adsorption process in the present application, the stability of the material in the molding groove can also be improved. During the rotation of the mold roller, the material in the molding groove is not easy to fall out of the molding groove under the action of negative pressure adsorption.

[0017] Preferably, as an improvement, the feed area includes a fiber feeding mechanism, a fiber combing mechanism, a polymer mixing mechanism and a feed pipe which are connected in sequence.

[0018] The fiber feeding mechanism of the present application is used to feed the fiber raw material into the production line, and then the fiber raw material passes through the fiber combing mechanism, and the fiber raw material is loosened by the fiber combing mechanism, so that the fiber raw material is looser. Subsequently, the loose fiber raw material passes through the polymer mixing mechanism, and the water-absorbing resin is sprinkled into the polymer mixing mechanism. The sprinkled water-absorbing resin and the loose fiber raw material passing through the polymer mixing mechanism are naturally mixed together under the action of wind blowing, and finally blown into the molding tank together. In this process, the water-absorbing resin is sprinkled into the fiber, and the absorbent resin enters the gap between the fibers, realizing the automatic mixing of the fiber and the water-absorbing resin, thereby ensuring that the material entering the molding tank is a mixture of the fiber and the water-absorbing resin.

[0019] Since the preparation of fibers in the preparation process of hot air nonwoven fabrics in the prior art also includes a fiber feeding mechanism and a fiber combing mechanism, and the fiber raw materials are also transported in a pipeline by blowing the fibers with gas, the feeding method in this application can make use of existing pipelines, wind pressure and other equipment, and the equipment cost is reduced. At the same time, the water-absorbing resin is sprinkled into the fibers by gas blowing, and the fibers and the water-absorbing resin can be naturally mixed, which is simple and convenient to operate.

[0020] Preferably, as an improvement, there are at least two hot air pipes, and when the molding groove passes through multiple hot air pipes, the temperature of the hot air blown in gradually increases.

[0021] As a result, the material in the molding tank passes through hot air pipes with different temperatures in turn, thereby realizing gradual heating of the molding tank in turn, which is beneficial to ensuring the time length and temperature of hot air shaping, and can ensure the effect of hot air shaping of the material in the molding tank.

[0022] Preferably, as an improvement, a cylinder cavity is provided inside the mold roller, and a plurality of air holes connected to the cylinder cavity are provided at the bottom of the molding groove; the negative pressure cavity is located inside the cylinder cavity; when the molding groove rotates to the negative pressure cavity, the air holes and the negative pressure cavity are connected.

[0023] Therefore, when the molding groove of the mold roller rotates to the negative pressure chamber, the air hole and the negative pressure chamber are connected, and the negative pressure in the negative pressure chamber acts on the molding groove through the air hole, thereby generating negative pressure in the molding groove.

[0024] Preferably, as an improvement, the discharge area includes a positive pressure chamber, and when the molding groove rotates to the discharge area, the air hole and the positive pressure chamber are connected.

[0025] Preferably, as an improvement, a sleeve is provided on the outside of the mold roller, and the mold roller rotates in the sleeve. The sleeve is used to support the mold roller and shield and protect the molding groove of the mold roller to prevent the molding groove from being exposed.

[0026] Preferably, as an improvement, a plurality of rotating support rollers are provided between the sleeve and the mold roller. Thus, by providing a plurality of rotating support rollers, the relative rotation between the sleeve and the mold roller is smoother, and the provision of the rotating support rollers allows a gap to be provided between the inner wall of the sleeve and the outer wall of the mold roller, thereby avoiding direct contact and friction between the inner wall of the sleeve and the material in the molding groove, thereby improving the smoothness of the rotation of the sleeve and the mold roller. In addition, when the material in the molding groove passes through the rotating support rollers, the rotating support rollers can also squeeze the material in the molding groove, thereby facilitating the molding effect of the core body.

[0027] Preferably, as an improvement, the depth of the forming groove is 0.8-5 mm.

[0028] Preferably, as an improvement, the outer diameter of the roller is 0.5-1 m.

[0029] Preferably, as an improvement, the discharging area is located at the bottom of the sleeve, and a conveyor belt is provided below the sleeve. Thus, the products falling out of the discharging area fall directly onto the conveyor belt, and the conveyor belt transports the products to the next production link for processing.

[0030] Preferably, as an improvement, a suction fan is provided on the lower side of the conveyor belt. Thus, by providing the suction fan, the suction fan can generate suction, thereby adsorbing the products in the discharge area downward through the holes on the surface of the conveyor belt, which is conducive to product discharge. BRIEF DESCRIPTION OF THE DRAWINGS

[0031] Figure 1 The present invention is a structural schematic diagram of a core processing device for sanitary products.

[0032] Figure 2 for Figure 1 Left side section view of (without conveyor belt).

[0033] Figure 3 Schematic diagram of a dumbbell-shaped molding groove. DETAILED DESCRIPTION

[0034] The following is further described in detail through specific implementation methods: The figure marks in the drawings of the specification include: feed pipe 1, mold roller 3, molding groove 4, air hole 5, negative pressure chamber 6, insertion part 10, conveyor belt 14, closing cover 15, negative pressure pipe 16, internal heating part 18, discharge hole 20, positive pressure chamber 21, positive pressure pipe 23, sleeve 25, rotating support roller 26, first hot air pipe 27, second hot air pipe 28.

[0035] Example 1 Basically as attached Figure 1-Figure 3 Shown: A core processing device for sanitary products, comprising a frame (not shown in the figure) and a mold roller 3. The device comprises a feeding area, a hot air shaping area and a discharging area.

[0036] The outer diameter (diameter) of the mold roller 3 in this embodiment is 0.5-1 m. The mold roller 3 is mounted on a frame.

[0037] A plurality of forming grooves 4 are provided on the circumferential side of the mold roller 3, and the depth of the forming grooves 4 is 0.8-5 mm, and specifically can be 2 mm. Figure 3 As shown, the forming groove 4 is dumbbell-shaped (dumbbell-shaped means that the width of the two ends of the forming groove 4 is greater than the width of the middle of the forming groove 4, and the end of the forming groove 4 is the head). Of course, in other embodiments, it can also be set to other shapes according to actual conditions. The multiple forming grooves 4 on the mold roller 3 are distributed in sequence around the circumferential side of the mold roller 3. The placement direction of the forming grooves 4 on the mold roller 3 and the length direction of the forming grooves 4 can be Figure 1 The longitudinal direction of the forming groove 4 may be perpendicular to the axial direction of the mold roller 3, or the longitudinal direction of the forming groove 4 may be parallel to the axial direction of the mold roller 3, and the forming groove 4 may be inclined on the surface of the mold roller 3. Figure 2 The number of the middle mold rollers 3 is eight, and of course in other embodiments it can be other numbers, such as six, ten, etc. One molding groove 4 in this embodiment is used to mold a dumbbell-shaped product.

[0038] The mold roller 3 of this embodiment is provided with a cylinder cavity, the inner wall of which is circular. Figure 2 As shown, the left end of the mold roller 3 is closed, and the other end of the mold roller 3 is provided with an opening, which is connected to the cylinder cavity. A rotating shaft is fixed (for example, welded or fixed by bolts) to the closed end of the mold roller 3. The rotating shaft is rotatably connected to the frame through a bearing. A driving mechanism (not shown in the figure) for driving the rotating shaft to rotate is provided on the frame, and the driving mechanism includes a motor, and the rotating shaft is driven to rotate by the motor, thereby realizing the rotation of the mold roller 3. In other embodiments, a reducer (for example, a reducer in the form of a gear meshing type) may also be connected between the output shaft of the motor and the rotating shaft, so that the rotation speed of the rotating shaft can be slowed down, so that the rotation speed of the mold roller 3 is not too fast, and the rotation of the mold roller 3 is relatively stable.

[0039] Combination Figure 2 As shown, a closing cover 15 is provided at one open end of the mold roller 3, and the closing cover 15 is fixed (for example, fixed by bolts) on the frame and cannot rotate. Figure 2 The edge of the middle closing cover 15 is bent to the left and is annular, and covers the outer side of the end of the mold roller 3, and the closing cover 15 and the end of the mold roller 3 are rotatably matched. The closing cover 15 is fixedly connected (for example, welded or fixed by bolts) with an insertion portion 10, and the insertion portion 10 is inserted into the barrel cavity through the opening. The outer wall of the insertion portion 10 in this embodiment is arc-shaped, and the insertion portion 10 is attached to the inner wall of the barrel cavity and slides (the insertion portion 10 in this embodiment does not contain a positive pressure cavity 21, and the positive pressure cavity 21 is a solid structure). The part of the barrel cavity in this embodiment that is not filled by the insertion portion 10 is a negative pressure cavity 6. In order to improve the sealing and lubricity between the insertion portion 10 and the inner wall of the barrel cavity, lubricating oil is applied between the arc-shaped side wall of the insertion portion 10 and the inner wall of the barrel cavity.

[0040] Combination Figure 2 As shown, in this embodiment, a negative pressure tube 16 is connected to the closing cover 15, and the negative pressure tube 16 is in communication with the negative pressure chamber 6. One end of the negative pressure tube 16 away from the closing cover 15 is connected to a negative pressure machine, and negative pressure is generated by the negative pressure machine, and the negative pressure machine acts on the negative pressure chamber 6 through the negative pressure tube 16, so that the negative pressure chamber 6 has negative pressure.

[0041] Combination Figure 2 and Figure 1As shown, the bottom of the forming groove 4 is provided with a plurality of air holes 5 connected with the barrel cavity. The air holes 5 are blocked by the inserting part at the part where the inserting part is in contact with the barrel cavity, while the air holes 5 at the negative pressure cavity 6 are not blocked, and the negative pressure cavity 6 can be opposite to and connected with the air holes 5 of the forming groove 4.

[0042] Combination Figure 1 As shown, a sleeve 25 is provided on the outer side of the mold roller 3 in this embodiment, and the sleeve 25 is fixedly mounted on the frame. A plurality of rotating support rollers 26 are provided between the inner wall of the sleeve 25 and the circumferential side wall of the mold roller 3. The plurality of rotating support rollers 26 are distributed around the circumference of the mold roller 3. Figure 2 At the left end of the middle sleeve 25, the rotating support roller 26 is rotatably connected to the frame through a bearing. The mold roller 3 is rotatably connected to the sleeve, and the feeding area is located on the sleeve. The feeding area is the area where the mixed material enters the molding groove 4. The feeding area in this embodiment is a feeding structure connected to the sleeve. The feeding structure includes a fiber feeding mechanism, a fiber combing mechanism, a polymer mixing mechanism and a feeding pipe 1 connected in sequence. In this embodiment, the fiber feeding mechanism (used to feed the fiber into the production line) and the fiber combing mechanism (such as a combing machine) are existing mechanisms. The fiber feeding mechanism and the fiber combing mechanism are connected through a pipeline. The fiber feeding mechanism and the fiber combing mechanism are used in the existing hot air non-woven fabric processing technology, and will not be repeated in this embodiment. The polymer mixing mechanism in this embodiment includes a mixing box, and a water-absorbing resin spreading pipe is connected to the upper part of the mixing box. One side of the mixing box is connected to the fiber combing mechanism through a pipeline, and the other side of the mixing box is connected to the feeding pipe 1 through a pipeline. In this embodiment Figure 1 The feed pipe 1 is connected to one of the molding grooves 4. Of course, in other embodiments, multiple feed pipes 1 may be provided, and the multiple feed pipes 1 are connected to the multiple molding grooves 4 respectively. For example, two feed pipes 1 are provided, and the two feed pipes 1 are arranged adjacent to each other, and the two feed pipes 1 are opposite to and connected to two adjacent molding grooves 4. Thus, the fiber raw material enters the pipeline of the production line through the fiber feeding mechanism, and enters the fiber combing mechanism along the pipeline. The fiber combing mechanism performs a loosening treatment on the fiber raw material to make the fiber looser, and then the loose fiber is blown into the mixing box through the pipeline, and the water-absorbent resin is sprinkled into the mixing box through the spreading pipe. The water-absorbent resin and the fiber are mixed in the mixing box under the action of wind, and after mixing, they are blown into the feed pipe 1 by the wind.

[0043] The discharge area is arranged on the sleeve, and the discharge area is the area where the product is separated from the forming groove 4. The discharge area in this embodiment includes a discharge hole 20, and the number of the discharge holes 20 can be one or more (when there are multiple discharge holes 20, they need to be arranged corresponding to the number of the feed pipes 1). Figure 1 The negative pressure chamber 6 is located between the discharge hole 20 (excluding the discharge hole 20) and the feed pipe 1 (including the feed pipe 1).

[0044] The hot air shaping in this embodiment includes two hot air pipes, namely a first hot air pipe 27 and a second hot air pipe 28. The air outlet of the first hot air pipe 27 and the air outlet of the second hot air pipe 28 are both facing the mold roller 3, and the ends of the two hot air pipes are both in contact with and slidingly matched with the mold roller 3. The molding tank 4 rotates to the hot air shaping area, and the hot air pipe blows hot air into the molding tank 4. The first hot air pipe 27 in this embodiment is located above the second hot air pipe 28, and the temperature of the hot air blown out by the first hot air pipe 27 (for example, 50-80°C) is lower than the temperature of the hot air blown out by the second hot air pipe 28 (for example, 130-150°C).

[0045] This embodiment Figure 1 The discharge hole 20 is located at the bottom of the sleeve, and the discharge hole 20 can be opposite to the forming groove 4. Of course, in other embodiments, the discharge hole 20 can also be arranged on other sides of the sleeve.

[0046] In addition, a conveyor belt is provided under the sleeve, which is used to receive the products and transport them to other processing steps.

[0047] The specific implementation process is as follows: In this embodiment, the feed pipe 1 is used to transport the mixed material of the fiber and the water-absorbing resin to the molding groove 4 of the mold roller 3, so that the material entering the molding groove 4 is a mixed material. Then the mold roller 3 rotates clockwise. During the rotation process, since there is a negative pressure in the negative pressure chamber 6, the air hole 5 here is not blocked, so there is a negative pressure in the molding groove 4 of the mold roller 3 at the negative pressure chamber 6. Under the action of the negative pressure, the fiber and the water-absorbing resin are stably adsorbed in the molding groove 4, and are shaped in the molding groove 4 under the action of the negative pressure. The fibers are intertwined with each other under the action of the negative pressure, and there is friction between adjacent fibers. The structure of the shaped product is firm and stable. The shaped product is in the shape of a dumbbell.

[0048] Then the mold roller 3 continues to rotate, and the molding groove 4 rotates the hot air shaping area. The molding groove 4 passes through the first hot air pipe 27 and the second hot air pipe 28 in sequence. The first hot air pipe 27 first blows hot air into the molding groove 4, so that the fibers with lower heat resistance temperature melt first and bond together, thus achieving preliminary hot air shaping. Then, the molding groove 4 passes through the second hot air pipe 28. The temperature blown out from the second hot air pipe 28 is higher, so that the fibers in the molding groove 4 are further heated and melted, thereby bonding together, and the structure of the core is more solid. In this way, the principle of hot air non-woven fabric is used to achieve core heat shaping. The blown hot air enters the negative pressure chamber 6 through the air hole 5 and is sucked away by the negative pressure pipe 16.

[0049] Then the mold roller 3 rotates to the discharge hole 20 of the discharge area. In this embodiment, the inner wall of the mold roller 3 at the discharge hole 20 is in contact with the insertion part 10, and the insertion part 10 blocks the pores 5 of the molding groove 4 at the discharge hole 20. There is no negative pressure in the pores 5 at this position, and the product is separated from the molding groove 4 of the mold roller 3 and falls downward through the discharge hole 20 onto the conveyor belt 14. In order to make it easier for the product to fall out of the molding groove 4, in other embodiments, a suction fan is provided on the lower surface of the conveyor belt 14, and a through hole is provided on the conveyor belt 14, and suction is generated downward by the suction fan, so that the product in the molding groove 4 can fall downward.

[0050] After the product falls out of the molding groove 4, the molding groove 4 is vacated, and when the molding groove 4 rotates to the feeding pipe 1 again, the mixed material of the feeding pipe 1 is received. Thus, with the continuous circulation of the mold roller 3, mass production of the product is achieved.

[0051] When preparing sanitary products later, dust-free paper or a base film or other structures are compounded on each independent dumbbell-shaped product, and then compounded to the sanitary products (for example, compounding the core body to the crotch of the diaper body).

[0052] Example 2 This embodiment is improved and perfected on the basis of embodiment 1. A positive pressure chamber 21 is provided on the insertion part 10 in the discharge area. There is positive pressure in the positive pressure chamber 21. The positive pressure chamber 21 is opposite to the discharge hole 20. The side wall of the insertion part 10 at the positive pressure chamber 21 is not in contact with the inner wall of the mold roller 3. When the molding groove 4 rotates to between the positive pressure chamber 21 and the discharge hole 20, the positive pressure chamber 21, the air hole and the discharge hole 20 are connected. Figure 2 As shown, in this embodiment, the closing cover 15 is connected to a positive pressure pipe 23, and an air pump is connected to the positive pressure pipe 23, and the positive pressure pipe 23 is connected to the positive pressure chamber 21. Through the positive pressure pipe 23, the air pump can blow air into the positive pressure chamber 21, so that the positive pressure chamber 21 has a positive pressure.

[0053] Thus, when the forming tank 4 containing the finalized product rotates to the discharge hole 20, the positive pressure chamber 21, the air hole and the discharge hole 20 are connected, and there is positive pressure in the positive pressure chamber 21. The gas in the positive pressure chamber 21 blows out the product in the forming tank 4 through the air hole, and the blown product falls out through the discharge hole 20. The arrangement of the positive pressure chamber 21 in this solution makes the discharge of the forming tank 4 smoother, and prevents the product from adhering to the forming tank 4 and not falling off easily.

[0054] Example 3 The sanitary product core processing equipment of the above-mentioned embodiments 1-2 is used to prepare a core with a small gram weight (50-120gsm). When a core with a large gram weight (420-450gsm) needs to be prepared, the core produced by the sanitary product core processing equipment of the present application can be transferred to other equipment platforms (such as a diaper production host) and more polymer water-absorbing resin can be sprinkled into the core gap to prepare a core with a large gram weight, which is suitable for sanitary products such as diapers with a large amount of liquid absorption; Alternatively, the sanitary product core processing equipment of the present application is used to prepare a core that does not contain absorbent resin (the core formed by the molding groove has only fiber components), and then more high-molecular absorbent resin is sprinkled into the core gap on other equipment platforms outside the equipment (such as a diaper production host), thereby preparing a core with a large gram weight, which is suitable for sanitary products such as diapers with a large liquid absorption capacity.

[0055] The above is only an embodiment of the present invention, and the common knowledge such as the known specific technical solutions and / or characteristics in the solution is not described in detail here. It should be pointed out that for those skilled in the art, without departing from the technical solution of the present invention, several modifications and improvements can be made, which should also be regarded as the protection scope of the present invention, and these will not affect the effect of the implementation of the present invention and the practicality of the patent. The scope of protection required by this application shall be based on the content of its claims, and the specific implementation methods and other records in the specification can be used to interpret the content of the claims.

Claims

1. A core processing equipment for sanitary products, characterized in that: include, A rotatable mold roller, wherein a plurality of molding grooves are arranged on the circumferential side of the mold roller, and the plurality of molding grooves on the mold roller are sequentially distributed around the circumferential side of the mold roller; A feeding area, the molding trough rotates to the feeding area, and the mixed material enters the molding trough; A hot air shaping area, wherein the hot air shaping area comprises a hot air pipe, and an air outlet of the hot air pipe faces the mold roller; The discharging area is the area where the product is separated from the forming tank; as the mold roller rotates, the forming tank rotates from the hot air shaping area to the discharging area to discharge the product; A negative pressure cavity is provided inside the mold roller, and after the mixed material enters the molding groove and before the mixed material is discharged, the negative pressure cavity is communicated with the molding groove.

2. A sanitary product core processing equipment according to claim 1, characterized in that: The feeding area comprises a fiber feeding mechanism, a fiber combing mechanism, a polymer mixing mechanism and a feeding pipe which are connected in sequence.

3. The core processing equipment for sanitary products according to claim 1, characterized in that: There are at least two hot air pipes, and when the molding groove passes through the multiple hot air pipes, the temperature of the hot air blown into the molding groove gradually increases.

4. The core processing equipment for sanitary products according to claim 1, characterized in that: The mold roller is provided with a cylinder cavity inside, and the bottom of the molding groove is provided with a plurality of air holes connected with the cylinder cavity; the negative pressure cavity is located inside the cylinder cavity; when the molding groove rotates to the negative pressure cavity, the air holes are connected with the negative pressure cavity.

5. The core processing equipment for sanitary products according to claim 4, characterized in that: The discharge area includes a positive pressure cavity, and when the molding groove rotates to the discharge area, the air hole is connected to the positive pressure cavity.

6. The core processing equipment for sanitary products according to claim 1, characterized in that: A sleeve is arranged on the outer side of the mold roller, and the mold roller rotates in the sleeve.

7. The core processing equipment for sanitary products according to claim 6, characterized in that: A plurality of rotating support rollers are arranged between the sleeve and the mold roller.

8. The core processing equipment for sanitary products according to claim 1, characterized in that: The depth of the forming groove is 0.8-5 mm.

9. The core processing equipment for sanitary products according to claim 6, characterized in that: The material discharging area is located at the bottom of the sleeve, and a conveyor belt is provided below the sleeve.

10. The core processing equipment for sanitary products according to claim 9, characterized in that: A suction fan is provided on the lower side of the conveyor belt.

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