Seat backrest surface cover coating machine
By using a partition structure and hot air spray assembly to process EPP material in a seat back cover covering machine, the problem of local stress concentration in EPP material during the covering process was solved, achieving uniform softening of the material and improving the covering quality.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-05-21
- Publication Date
- 2026-04-03
AI Technical Summary
EPP material is prone to causing localized stress concentration during the backrest filling process, resulting in wrinkles or loose areas, which is difficult to effectively solve with existing technologies.
The system employs a baffle structure inside the cylinder, combined with a hot air blower and spray assembly. By uniformly spraying water and hot air, the EPP material is treated, causing it to tumble and soften inside the cylinder, thus reducing rebound resistance.
This process achieves uniform softening of EPP material in the backrest filling, avoids localized stress concentration after covering, reduces the formation of wrinkles and loose areas, and improves the covering quality.
Smart Images

Figure CN224077065U_ABST
Abstract
Description
Technical Field
[0001] This utility model belongs to the field of backrest processing technology, and in particular relates to a seat backrest cover covering machine. Background Technology
[0002] A backrest is a product designed to provide back support. Its main function is to provide support and help people maintain a correct sitting or lying posture. When driving for a long time, placing a backrest on the seat can increase comfort and relieve fatigue. The backrest filling is usually made of EPP material. During the covering process, due to the high rebound resistance of EPP material, local stress concentration occurs after the cover is covered, forming wrinkles or loose areas. This paper proposes a covering structure that can reduce the rebound resistance of EPP material filling. Utility Model Content
[0003] To address the shortcomings of existing technologies, this utility model provides a seat back cover covering machine, which solves the above-mentioned problems.
[0004] To achieve the above objectives, this utility model provides the following technical solution: a seat back cover covering machine, comprising a cylindrical body, wherein multiple partitions are symmetrically fixedly connected inside the cylindrical body, and the partitions are inclinedly arranged on the inner wall of the cylindrical body; a hot air blower is provided on one side of the cylindrical body, and a connecting pipe is fixedly connected to the air outlet of the hot air blower; the connecting pipe penetrates into the cylindrical body and is rotatably connected to the cylindrical body; the connecting pipe is coaxial with the cylindrical body; the cylindrical body is rotatably mounted on a frame, and the hot air blower is fixedly connected to the frame; further comprising a spraying assembly for spraying water into the cylindrical body; and a driving assembly for making the cylindrical body rotate at a uniform speed.
[0005] Beneficial effects
[0006] This utility model provides a seat back cover covering machine, which has the following advantages compared with the prior art:
[0007] Beneficial effects:
[0008] The user adds EPP material filler in batches through the slots on both sides of the cylinder, allowing it to slide between the two bottom baffles. It's important to add the filler evenly and laterally to ensure even distribution within the cylinder. The user then starts motor A, causing the gear fixed to its output shaft to rotate at a constant speed. This drives the meshing gear ring to rotate at a constant speed. Since the gear ring is fixed to the ring sleeve, the connecting pipe rotates at a constant speed, gradually sealing the slots on both sides of the cylinder until the arc plates completely block them. The user then starts the water pump inside the storage box to draw water from the box and inject it into the guide pipe at the outlet. The water is then sprayed onto the filler within the baffles by the spray bar. Simultaneously, the user starts the motor, causing the cylinder to rotate. During the slow, uniform rotation, the filler material between the two partitions tumbles continuously within the cylinder, allowing water to be sprayed evenly onto it. This promotes water absorption and expansion of the micropores inside the EPP, improving heat transfer efficiency. Users should control the spraying time to avoid over-spraying, which could cause excessive water absorption in the filler material. After stopping spraying, the user can activate the hot air blower, which transmits hot air into the cylinder through the arc plate. This ensures the filler material is heated evenly during rolling, softening it uniformly and reducing its rebound resistance. This prevents localized stress concentration after coating, avoiding wrinkles or loose areas. Once the filler material is heated, the user should turn off the motor when the slots on both sides of the partition are in the same vertical plane. At this point, the filler material will have accumulated on the arc plate. The user can then restart motor A, causing the arc plate to rotate and allowing the filler material to fall out of the cylinder through the slots, facilitating continued coating work. Attached Figure Description
[0009] Figure 1 This is a three-dimensional structural diagram of the present invention.
[0010] Figure 2 This is a schematic diagram of the overall structure of this utility model.
[0011] Figure 3 This is a cross-sectional structural diagram of the present invention.
[0012] Figure 4 This is a cross-sectional schematic diagram of the overall structure of this utility model.
[0013] Figure reference numerals: cylinder 101, partition 201, connecting pipe 202, hot air blower 203, arc plate 204, spray bar 205, guide pipe 206, liquid storage box 207, shaft 208, motor 209, ring sleeve 301, gear ring 302, gear 303, motor A 304, frame 305, through groove 306. Detailed Implementation
[0014] To make the objectives, technical solutions, and advantages of this utility model clearer, the present utility model will be further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the present utility model and are not intended to limit the present utility model.
[0015] The specific implementation of this utility model will be described in detail below with reference to specific embodiments.
[0016] Please see Figures 1-4 This invention provides a seat back cover covering machine, comprising a cylindrical body 101, wherein a plurality of partitions 201 are symmetrically fixedly connected inside the cylindrical body 101, and the partitions 201 are inclinedly arranged on the inner wall of the cylindrical body 101; a hot air blower 203 is provided on one side of the cylindrical body 101, and a connecting pipe 202 is fixedly connected to the air outlet of the hot air blower 203; the connecting pipe 202 penetrates into the cylindrical body 101 and is rotatably connected to the cylindrical body 101; the connecting pipe 202 is coaxial with the cylindrical body 101; the cylindrical body 101 is rotatably mounted on a frame 305, and the hot air blower 203 is fixedly connected to the frame 305;
[0017] It also includes a spraying assembly for spraying water into the cylinder 101; and a drive assembly for making the cylinder 101 rotate at a constant speed.
[0018] For the above examples, those skilled in the art should know that the implementation of the above technical solutions is not limited to the specific connecting pipe 202 described in the above embodiments. For example, the air outlet of the connecting pipe 202 should be located at its axis. The purpose of this arrangement is to facilitate the uniform heating of the EPP filler material. The hot air blower 204 can be selected from various models such as HAM-G3A-11, HAM-G7.5A-22 or HAM-G20A-34.
[0019] Specifically, the spray assembly includes a spray bar 205, which is fixedly connected to the axis of the cylinder 101, and a plurality of atomizing nozzles are symmetrically arranged on the spray bar 205. A guide pipe 206 is fixedly connected to the spray bar 205, and the other end of the guide pipe 206 extends through the side wall of the cylinder 101.
[0020] It also includes an injection assembly for injecting pressurized water into the spray bar 205.
[0021] Regarding the above examples, those skilled in the art should know that the implementation of the above technical solutions is not limited to the specific spray bar 205 described in the above embodiments. For example, the nozzles on the spray bar 205 are arranged on its side wall, and only one row is arranged. The purpose of this arrangement is to avoid the EPP filler absorbing too much water.
[0022] Specifically, the infusion assembly includes a liquid storage box 207, the other end of the guide pipe 206 penetrates into the liquid storage box 207 and is fixedly connected to the outlet of the water pump inside the liquid storage box 207, and the liquid storage box 207 is fixedly connected to the eccentric part of the cylinder 101.
[0023] For the above examples, those skilled in the art should know that the implementation of the above technical solutions is not limited to the specific liquid storage box 207 described in the above embodiments. For example, the liquid storage box 207 is provided with a water injection hole for adding water into the liquid storage box 207 to prevent the water inside from being drained.
[0024] Specifically, the drive assembly includes a shaft 208 and a motor 209. One end of the shaft 208 is fixedly connected to the shaft center of the cylinder 101, and the other end of the shaft 208 is fixedly connected to the output shaft of the motor 209. The motor 209 is fixedly connected to the frame 305.
[0025] It also includes a sealing assembly for increasing the airtightness of the cylinder 101.
[0026] For the above examples, those skilled in the art should know that when implementing the above technical solutions, it is not limited to the specific motor 209 and motor A304 described in the above embodiments. For example, both motor 209 and motor A304 are motors with self-locking effect. The purpose of this setting is to avoid the output shaft from reversing if an external force is applied to its output shaft after it stops and enters the standby state.
[0027] Specifically, the sealing component includes an arc plate 204 and a through groove 306. The through groove 306 is symmetrically arranged on both sides of the cylinder 101, and the arc plate 204 is sleeved on the cylinder 101. The length and width of the arc plate 204 are both greater than the through groove 306, and a high-temperature resistant rubber gasket is provided at the connection between the arc plate 204 and the cylinder 101.
[0028] And a transmission assembly for making the arc plate 204 rotate at a uniform speed.
[0029] Specifically, the drive assembly includes a ring sleeve 301 and a gear ring 302. The arc plate 204 is fixedly connected between the two ring sleeves 301. The ring sleeves 301 are rotatably connected to the cylinder 101. The gear ring 302 is fixedly connected to either ring sleeve 301, and a gear 303 is meshed with one side of the gear ring 302. The gear 303 is fixedly connected to the output shaft of the motor A304. The motor A304 is fixedly connected to the cylinder 101.
[0030] In this embodiment of the invention, the user inserts EPP material filler into the cylinder 101 in batches through the through slots 306 on both sides of the cylinder 101, allowing the filler to slide between the two partitions 201 on the bottom side. It should be noted that the filler should be inserted horizontally and evenly during the insertion process to ensure that it is evenly distributed within the cylinder 101. The user then starts the motor A304, causing the gear 303 fixedly connected to the output shaft of the motor A304 to rotate at a constant speed. This causes the gear 303 to drive the gear ring 302 meshing with it to rotate evenly. When the gear ring 302 is fixedly connected to the ring sleeve 301, the connecting pipe 202 begins to rotate at a constant speed, gradually sealing the through grooves 306 on both sides of the cylinder 101 until the arc plate 204 completely seals the through grooves 306. Then, the user can start the water pump in the liquid storage box 207 to begin drawing water from the liquid storage box 207 and injecting the water into the guide pipe 206 at its outlet. At this time, under the action of the spray bar 205, the water is sprayed into the filling material in the partition 201. During this process, the user should start the motor 209. This causes the cylinder 101 to begin rotating. During this slow, uniform rotation, the filler material between the two partitions 201 continuously tumbles within the cylinder 101, allowing water to be evenly sprayed onto it. This promotes water absorption and expansion of the micropores inside the EPP, improving heat transfer efficiency. Users should control the spraying time to avoid over-spraying, which could cause excessive water absorption in the filler material. After stopping spraying, the user can activate the hot air blower 203, which transfers hot air into the cylinder 101 through the arc plate 204, causing the filler material inside the cylinder 101 to circulate. The filling material is heated evenly during the rolling process, which softens it evenly and reduces its rebound resistance. This avoids local stress concentration after covering, which can lead to wrinkles or loose areas. After the filling material is heated, the user turns off the motor 209 when the through slots 306 on both sides of the partition 201 are in the same vertical plane. At this time, the filling material is piled up on the arc plate 204. Then the user can restart the motor A304, which will cause the arc plate 204 to rotate, allowing the filling material in the cylinder 101 to fall out of the cylinder 101 through the through slots 306, so that the covering work can continue.
[0031] 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.
[0032] The term "fixed connection" as used in this application refers to a connection in which parts or components are fixed without any relative movement. This includes both detachable and non-detachable connections.
[0033] (1) Detachable connection: The components are fixed together using screws, splines, wedges, etc. This type of connection can be disassembled during maintenance without damaging the parts. However, the specifications of the connecting parts used must be correct (such as the length of the bolts, keys, wedges) and properly tightened.
[0034] (2) Non-removable connections: These mainly refer to welding, riveting, and tenon joints. Since disassembly requires forging, sawing, or oxyacetylene cutting for repair or replacement, the parts generally cannot be reused. At the same time, attention should be paid to process quality, technical inspection, and remedial measures (such as correction and polishing) during connection.
[0035] The sliding connection referred to in this application means that the component can slide along a linear trajectory, and the hinge referred to in this application means that the component can rotate along an axial constraint.
[0036] In some cases, the sliding connection and hinge referred to in this application may also be damped, enabling the component to maintain in the desired position.
[0037] 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 seat back cover wrapping machine characterized by, The utility model provides a kind of steam cleaning machine, including cylinder (101), the multiple baffle (201) is fixedly connected in symmetry inside the cylinder (101), and the baffle (201) is obliquely arranged in the inner wall of cylinder (101), one side of the cylinder (101) is provided with hot air fan (203), the connecting pipe (202) is fixedly connected at the air port of hot air fan (203), the connecting pipe (202) is penetrated into cylinder (101), and the connecting pipe (202) is rotatably connected with cylinder (101), the connecting pipe (202) is coaxial with cylinder (101), the cylinder (101) is rotatably arranged on rack (305), and the hot air fan (203) is fixedly connected on rack (305); It also includes a spraying assembly for spraying water into the cylinder (101); And a drive assembly for rotating the cylinder (101) at a constant speed.
2. The seat back cover wrapping machine of claim 1, wherein, The spraying assembly includes a spray rod (205) fixedly connected at the axis of the cylinder (101), and a plurality of atomizing nozzles symmetrically arranged on the spray rod (205), a flow guide pipe (206) fixedly connected to the spray rod (205), and the other end of the flow guide pipe (206) penetrating out of the side wall of the cylinder (101). It also includes an infusion assembly for infusing pressurized water into the spray rod (205).
3. The seat back cover lamination machine of claim 2, wherein, The infusion assembly includes a liquid storage box (207), the other end of the flow guide pipe (206) penetrating into the liquid storage box (207), and fixedly connected to the water outlet of a water pump in the liquid storage box (207), the liquid storage box (207) fixedly connected to the eccentric position of the cylinder (101).
4. The seat back cover lamination machine of claim 1, wherein, The drive assembly includes a shaft (208) and a motor (209), one end of the shaft (208) fixedly connected at the axis of the cylinder (101), the other end of the shaft (208) fixedly connected to the output shaft of the motor (209), the motor (209) fixedly connected to the rack (305). It also includes a sealing assembly for increasing the air tightness of the cylinder (101).
5. The seat back cover wrapping machine of claim 4, wherein, The sealing assembly includes an arc plate (204) and a through slot (306), the through slot (306) symmetrically arranged on both sides of the cylinder (101), and the arc plate (204) sleeved on the cylinder (101), the length and width of the arc plate (204) are greater than the through slot (306), and the connection between the arc plate (204) and the cylinder (101) is provided with a high-temperature resistant rubber pad. And a transmission assembly for rotating the arc plate (204) at a constant speed.
6. The seat back cover wrapping machine of claim 5, wherein, The transmission assembly includes a ring sleeve (301) and a gear ring (302), the arc plate (204) fixedly connected between two ring sleeves (301), the ring sleeve (301) rotatably connected to the cylinder (101), the gear ring (302) fixedly connected to any ring sleeve (301), and the gear ring (302) meshingly connected with a gear (303) on one side, the gear (303) fixedly connected to the output shaft of motor A (304), and the motor A (304) fixedly connected to the cylinder (101).
7. The seat back cover lamination machine of claim 4, wherein, The motor (209) and motor A (304) have self-locking effect.
8. The seat back cover lamination machine of claim 3, wherein, The liquid storage box (207) is provided with a water injection hole.