Automobile headrest foaming production line

Abstract

The utility model provides an automobile headrest foaming production line which comprises a conveying line, a plurality of foaming molds mounted on the conveying line, a piece taking station, a piece placing station and a material injection station positioned at the downstream of the piece placing station, the conveying line comprises an upper conveying belt, a lower conveying belt located below the upper conveying belt, a downward transferring device for transferring the foaming mold to the lower conveying belt, and an upward transferring device for transferring the foaming mold to the upper conveying belt. And a material injection gun head which can be connected with a material injection opening of the foaming mold at the material injection station and injects materials into the headrest sleeve in the foaming mold is arranged at the material injection station. The conveying line is a vertical annular production line, so that the production line is small in occupied space and particularly suitable for limited places; compared with the circular configuration in the prior art, the upper conveying belt and the lower conveying belt are arranged up and down, the number of foaming molds can be installed on the upper conveying belt and the lower conveying belt, and the number of the foaming molds can be configured according to the actual production situation and is not limited.

Description

Technical Field

[0001] The utility model belongs to the field of foaming production lines, and in particular relates to an automobile headrest foaming production line. Background Art

[0002] Foam molding is the process of injecting liquid polymer mixture (such as polyurethane AB material) into a mold for foam molding. Injection foam molding technology is a one-time molding method with high production efficiency and good product quality. It is suitable for foam plastic products with complex shapes and strict dimensional requirements. It is the main method for producing structural foams. In order to meet the large-scale production needs of automobile headrests, continuous foaming production lines are often used for gas headrest foam molding.

[0003] CN202110465920.0 discloses an integrated foaming production line for a headrest, which arranges multiple foaming molds at intervals on the periphery of a turntable and rotates with the turntable. In this circular configuration with a rotating turntable, the number of molds will be limited by the production site. Usually 16-24 molds are arranged. As the number of molds increases, a larger site is required, which is not suitable for places with limited space. Utility Model Content

[0004] The utility model aims to solve the technical problems existing in the prior art and provides a foaming production line for automobile headrests.

[0005] To achieve the above-mentioned purpose, the utility model adopts the following technical scheme: a car headrest foaming production line, including a conveyor line, a plurality of foaming molds installed at intervals on the conveyor line, a picking station, a placing station and an injection station located downstream of the placing station, the conveyor line includes an upper conveyor belt, a lower conveyor belt located below the upper conveyor belt, a downward transfer device for transferring the foaming mold output from the upper conveyor belt to the lower conveyor belt, and an upward transfer device for transferring the foaming mold output from the lower conveyor belt to the upper conveyor belt; an injection gun head connected to the injection equipment through an injection hose is provided at the injection station, the injection gun head can be connected to the injection port of the foaming mold at the injection station, and inject material into the headrest cover in the foaming mold.

[0006] In the above technical solution, the conveyor line includes a vertical circular production line composed of an upper conveyor belt, a lower conveyor belt, a downward transfer device and an upward transfer device, so that the production line occupies a small space and is particularly suitable for places with limited space; and compared with the circular configuration of the prior art, the upper conveyor belt and the lower conveyor belt of the utility model are arranged one above the other, and a large number of foaming molds can be installed thereon, and the number of foaming molds can be configured according to actual production conditions without restriction. In addition, compared with the conveyor chain structure using a sprocket chain, the foaming mold is inverted. When the foaming mold of the utility model is running on the conveyor line, the foaming mold is always in an upright state, which does not affect the foaming of the foaming material in the foaming mold; and compared with the inverted foaming mold, the inventive mold of the utility model is upright, and its connection with the conveyor line is simpler and more reliable.

[0007] In a preferred embodiment of the present invention, the downward transfer device includes a downward transfer platform and a first vertical driving mechanism for driving the downward transfer platform to move vertically. The downward transfer platform can be in an upper transfer position that is docked and flush with the end of the upper conveyor belt, and a lower transfer position that is docked and flush with the starting end of the lower conveyor belt; the foaming mold output from the end of the upper conveyor belt can move to the downward transfer platform at the upper transfer position, and the downward transfer device also includes a first conveying mechanism that conveys the foaming mold on the downward transfer platform at the lower transfer position to the lower conveyor belt.

[0008] According to the above technical solution, the downward transfer platform can move between the upper transfer position and the lower transfer position, and can be connected to the upper conveyor belt and the lower conveyor belt in a time-sharing manner. At the same time, a first conveying mechanism is provided so that the foaming mold at the end of the upper conveyor belt can be smoothly transferred to the lower conveyor belt.

[0009] In a preferred embodiment of the present invention, a first vertical frame is fixedly connected to the outer side of the conveyor line, a first slider is vertically slidably connected to the first vertical frame, a first vertical driving mechanism is installed on the first vertical frame and drives the first slider to move vertically, and the downward transfer platform is installed on the first slider and moves vertically with the first slider; the first vertical driving mechanism includes a motor, and the output shaft of the motor is coaxially fixed with a vertically extending first screw rod, and the first screw rod is threadedly connected to the first slider; or the first vertical driving mechanism includes a motor, and the output shaft of the motor is connected to a sprocket chain transmission mechanism installed on the vertical frame, and the first slider is fixed to the chain.

[0010] The above technical solution supports the first vertical drive mechanism and the downward transfer platform by setting up a first stand. The first vertical drive mechanism drives the first slider to move vertically to enable the vertical movement of the downward transfer platform, making the vertical movement of the downward transfer platform smoother.

[0011] In a preferred embodiment of the present invention, the downward transfer platform is a conveying plate, and the first conveying mechanism is an electric push rod; or the downward transfer platform is a conveyor belt structure, and the conveyor belt structure is the first conveying mechanism.

[0012] The above technical solution provides two implementation methods of the first conveying mechanism, which is carried out through an electric push rod or a conveyor belt structure, and has a simple and reliable structure.

[0013] In a preferred embodiment of the present invention, the upward transfer device includes an upward transfer platform, and a second vertical driving mechanism for driving the upward transfer platform to move vertically, the upward transfer platform can be in a lower transfer position that is docked and flush with the end of the lower conveyor belt, and an upper transfer position that is docked and flush with the starting end of the upper conveyor belt; the foaming mold output from the end of the lower conveyor belt can move to the upward transfer platform at the lower transfer position, and the upward transfer device also includes a second conveying mechanism that conveys the foaming mold on the upward transfer platform at the upper transfer position to the upper conveyor belt.

[0014] According to the above technical solution, the upward transfer platform can move between the lower transfer position and the upper transfer position, and can be connected to the lower conveyor belt and the upper conveyor belt in a time-sharing manner. At the same time, a second conveying mechanism is provided so that the foaming mold at the end of the lower conveyor belt can be smoothly transferred to the upper conveyor belt.

[0015] In a preferred embodiment of the present invention, a second vertical frame is fixedly connected to the outer side of the conveyor line, a second slider is vertically slidably connected to the second vertical frame, the upward transfer platform is installed on the second slider and moves vertically with the second slider; the second vertical drive mechanism includes a motor, the output shaft of the motor is coaxially fixed with a vertically extending second screw rod, and the second screw rod is threadedly connected to the second slider; or the first vertical drive mechanism includes a motor, the output shaft of the motor is connected to a sprocket chain transmission mechanism installed on the vertical frame, and the second slider is fixed to the chain.

[0016] The above technical solution supports the second vertical drive mechanism and the upward transfer platform by setting up a second stand. The second vertical drive mechanism drives the second slider to move vertically to enable the vertical movement of the upward transfer platform, making the vertical movement of the upward transfer platform smoother.

[0017] In another preferred embodiment of the present invention, the upward transfer platform is a conveying plate, and the second conveying mechanism is an electric push rod; or the upward transfer platform is a conveyor belt structure, and the conveyor belt structure is the second conveying mechanism.

[0018] The above technical solution provides two implementation methods of the second conveying mechanism, which is carried out by an electric push rod or a conveyor belt structure, and has a simple and reliable structure.

[0019] In another preferred embodiment of the present invention, the injection gun head is located above the foaming mold at the injection station, and the injection gun head is connected to an injection driving mechanism that drives it to move vertically to approach or move away from the foaming mold below it.

[0020] In the above technical solution, the injection driving mechanism enables the injection gun head to move vertically to connect or disconnect with the injection port of the foaming mold, and the structure is simple and reliable.

[0021] In another preferred embodiment of the utility model, it also includes an air injection station arranged between the placement station and the injection station, and the air injection station is provided with an air injection nozzle connected to the air source through an air supply hose. The air injection nozzle can be connected to the injection port of the foaming mold at the air injection station and inject air into the headrest cover in the foaming mold.

[0022] According to the above technical solution, before injecting material into the headrest cover in the foaming mold, gas is first injected into the headrest cover in the foaming mold through the gas injection nozzle. The injected gas blows up the shrunk corners or wrinkles of the headrest cover, so that the foam material injected subsequently can completely fill the headrest cover after expansion, without missing foam material at any corners, and the appearance is more beautiful.

[0023] In another preferred embodiment of the present invention, the gas injection nozzle is located above the foaming mold at the gas injection station, and is connected to a gas injection drive mechanism that drives the gas injection nozzle to move vertically to approach or move away from the foaming mold below it.

[0024] In the above technical solution, the gas injection drive mechanism enables the gas injection nozzle to move vertically to connect or disconnect with the injection port of the foaming mold, and the structure is simple and reliable.

[0025] Additional aspects and advantages of the present invention will be given in part in the following description, and in part will become apparent from the following description, or will be learned through the practice of the present invention. BRIEF DESCRIPTION OF THE DRAWINGS

[0026] The above and / or additional aspects and advantages of the present invention will become apparent and easily understood from the description of the embodiments in conjunction with the following drawings, in which:

[0027] Figure 1 It is a structural schematic diagram of an automobile headrest foaming production line according to an embodiment.

[0028] The figure marks in the drawings of the specification include: conveyor line 10, upper conveyor belt 11, lower conveyor belt 12, downward transfer device 13, downward transfer platform 131, first vertical drive mechanism 132, first conveying mechanism 133, first stand 134, first slide block 135, upward transfer device 14, upward transfer platform 141, second vertical drive mechanism 142, second conveying mechanism 143, second stand 144, second slide block 145, foaming mold 20, injection port 21, injection gun head 30, injection hose 31, injection drive mechanism 32, gas injection nozzle 40, air supply hose 41, gas injection drive mechanism 42, pick-up station A, placement station B, injection station C, gas injection station D. DETAILED DESCRIPTION

[0029] The embodiments of the present invention are described in detail below, and examples of the embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals throughout represent the same or similar elements or elements having the same or similar functions. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain the present invention, and cannot be understood as limiting the present invention.

[0030] In the description of the present invention, it should be understood that the terms "longitudinal", "lateral", "vertical", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside" and "outside" etc., indicating orientations or positional relationships, are based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as a limitation on the present invention.

[0031] In the description of the present utility model, unless otherwise specified and limited, it should be noted that the terms "installation", "connection" and "connection" should be understood in a broad sense. For example, it can be a mechanical connection or an electrical connection, or it can be the internal connection of two components. It can be a direct connection or an indirect connection through an intermediate medium. For ordinary technicians in this field, the specific meanings of the above terms can be understood according to the specific circumstances.

[0032] The utility model provides a car headrest foaming production line, such as Figure 1As shown, in a preferred embodiment, the production line includes a circular conveyor line 10, a plurality of foaming molds 20 installed at intervals on the conveyor line 10, a pick-up station A, a placing station B, and an injection station C located downstream of the placing station B. The conveyor line 10 includes an upper conveyor belt 11, a lower conveyor belt 12 located below the upper conveyor belt 11, a downward transfer device 13 for transferring the foaming mold 20 output from the upper conveyor belt 11 to the lower conveyor belt 12, and an upward transfer device 14 for transferring the foaming mold 20 output from the lower conveyor belt 12 to the upper conveyor belt 11. Preferably, the upper conveyor belt 11 and the lower conveyor belt 12 are both horizontally arranged with both ends aligned, and the pick-up station A, the placing station B, and the injection station C correspond to the foaming mold 20 on the upper conveyor belt 11.

[0033] The injection station C is provided with an injection gun head 30 connected to the injection equipment through an injection hose 31. The injection gun head 30 can be connected to the injection port 21 of the foaming mold 20 at the injection station C and inject material into the headrest cover in the foaming mold 20. The injection gun head 30 is located above the foaming mold 20 at the injection station C. The injection gun head 30 is connected to an injection drive mechanism 32 that drives it to move vertically to approach or move away from the foaming mold 20 below it. The injection drive mechanism 32 can adopt the structure of an electric cylinder, a pneumatic cylinder or a motor + a lead screw in the prior art, and can drive the injection gun head 30 to move vertically.

[0034] During production, the foaming mold 20 at the corresponding pickup station A on the upper conveyor belt 11 is opened, and the worker takes the foamed headrest therein; the foaming mold 20 moves to the right along with the upper conveyor belt 11 to the placement station B, and the worker places the headrest to be injected with foam material in the opened foaming mold 20 at the placement station B, and closes the foaming mold 20; the foaming mold 20 moves to the right along with the upper conveyor belt 11 to the injection station C, and the injection drive mechanism 32 is actuated to make the injection gun head 30 move downward to the foaming station C. The injection port 21 of the mold 20 is connected, and the injection gun head 30 injects foaming material into the headrest cover in the foaming mold 20; after the injection is completed, the injection gun head 30 moves upward, and the foaming mold 20 moves to the right with the upper conveyor belt 11 to the end of the upper conveyor belt 11, and the foaming mold 20 is transferred to the lower conveyor belt 12 by the downward transfer device 13. After the injection of the foaming mold 20 is completed, during the transportation of the conveyor line 10, the foaming material is expanded and foamed in the foaming mold 20. The foaming mold 20 moves to the left with the lower conveyor belt 12 to the end of the lower conveyor belt 12, and the foaming mold 20 is transferred to the upper conveyor belt 11 by the upward transfer device 14. The foaming mold 20 moves to the right with the upper conveyor belt 11 to the initial pickup station A. In this way, multiple foaming molds 20 are opened, picked up, placed, closed, injected, foamed, and opened in turn. There is no waiting gap in the work at each process operation station, and the production efficiency is high.

[0035] In the present invention, the downward transfer device 13 includes a downward transfer platform 131 and a first vertical driving mechanism 132 for driving the downward transfer platform 131 to move vertically. The downward transfer platform 131 can be in an upper transfer position that is docked and flush with the end of the upper conveyor belt 11, and a lower transfer position that is docked and flush with the beginning of the lower conveyor belt 12. The foaming mold 20 output from the end of the upper conveyor belt 11 can move to the downward transfer platform 131 at the upper transfer position, and the downward transfer device 13 also includes a first conveying mechanism 133 that conveys the foaming mold 20 on the downward transfer platform 131 at the lower transfer position to the lower conveyor belt 12.

[0036] Initially, the downward transfer platform 131 is flush with the end (right end) of the upper conveyor belt 11 and is located in the upper transfer position. When the foaming mold 20 is transported to the right by the upper conveyor belt 11 to its end, the foaming mold 20 on the upper conveyor belt 11 automatically moves to the downward transfer platform 131 by inertia; the first vertical drive mechanism 132 is activated to cause the downward transfer platform 131 to move downward and be flush with the starting end (right end) of the lower conveyor belt 12 and be located in the lower transfer position. The foaming mold 20 moves downward with the downward transfer platform 131, and the first conveying mechanism 133 is activated to cause the foaming mold 20 to move leftward onto the lower conveyor belt 12; thereafter, the first vertical drive mechanism 132 is activated to cause the downward transfer platform 131 to move upward to the initial upper transfer position.

[0037] In this embodiment, a first vertical frame 134 is fixedly connected to the outer side of the conveyor line 10, and the first vertical frame 134 is located outside the right side of the upper conveyor belt 11 and the lower conveyor belt 12. A first slider 135 is vertically slidably connected to the first vertical frame 134. The first vertical driving mechanism 132 is installed on the first vertical frame 134 and drives the first slider 135 to move vertically. The downward transfer platform 131 is installed on the first slider 135 and moves vertically with the first slider 135.

[0038] Among them, the first vertical driving mechanism 132 can drive the first slider 135 to move vertically in an existing manner. For example, the first vertical driving mechanism 132 includes a motor, and the output shaft of the motor is coaxially fixed with a vertically extending first screw rod, and the first screw rod is threadedly connected to the first slider 135. The motor rotates the first screw rod, and the first screw rod drives the downward transfer platform 131 to move vertically through the first slider 135; for another example, the first vertical driving mechanism 132 includes a motor, and the output shaft of the motor is connected to a sprocket chain transmission mechanism installed on a vertical frame, and the first slider 135 is fixed on the chain, and the downward transfer platform 131 and the first slider 135 move vertically with the operation of the chain.

[0039] In one embodiment, the downward transfer platform 131 is a conveying plate, and the first conveying mechanism 133 is an electric push rod installed on the first stand 134, and the telescopic shaft of the electric push rod extends from right to left to push the foaming mold 20 on the downward transfer platform 131 onto the lower conveyor belt 12. In another embodiment, the downward transfer platform 131 is a conveyor belt structure, and the conveyor belt structure is the first conveying mechanism 133. The downward transfer platform 131 of the conveyor belt structure runs to the left to convey the foaming mold 20 thereon to the lower conveyor belt 12.

[0040] In the present invention, the upward transfer device 14 includes an upward transfer platform 141 and a second vertical driving mechanism 142 for driving the upward transfer platform 141 to move vertically. The upward transfer platform 141 can be in a lower transfer position that is docked and flush with the end of the lower conveyor belt 12, and an upper transfer position that is docked and flush with the beginning of the upper conveyor belt 11. The foaming mold 20 output from the end of the lower conveyor belt 12 can move to the upward transfer platform 141 at the lower transfer position, and the upward transfer device 14 also includes a second conveying mechanism 143 that conveys the foaming mold 20 on the upward transfer platform 141 at the upper transfer position to the upper conveyor belt 11.

[0041] Initially, the upward transfer platform 141 is flush with the end (left end) of the lower conveyor belt 12 and is located in the lower transfer position. When the foaming mold 20 is transported to the left by the lower conveyor belt 12 to its end, the foaming mold 20 on the lower conveyor belt 12 automatically moves to the upward transfer platform 141 by inertia; the second vertical drive mechanism 142 is activated to cause the upward transfer platform 141 to move upward and be flush with the starting end (left end) of the upper conveyor belt 11 and be located in the upper transfer position. The foaming mold 20 moves upward with the upward transfer platform 141, and the second conveying mechanism 143 is activated to cause the foaming mold 20 to move rightward onto the upper conveyor belt 11; thereafter, the second vertical drive mechanism 142 is activated to cause the upward transfer platform 141 to move downward to the initial lower transfer position.

[0042] In this embodiment, a second vertical frame 144 is fixedly connected to the outer side of the conveyor line 10, and the second vertical frame 144 is located outside the left side of the upper conveyor belt 11 and the lower conveyor belt 12. A second slider 145 is vertically slidably connected to the second vertical frame 144. The second vertical driving mechanism 142 is installed on the second vertical frame 144 and drives the second slider 145 to move vertically. The upward transfer platform 141 is installed on the second slider 145 and moves vertically with the second slider 145.

[0043] Among them, the second vertical drive mechanism 142 can drive the second slider 145 to move vertically in an existing manner. For example, the second vertical drive mechanism 142 includes a motor, and the output shaft of the motor is coaxially fixed with a vertically extending second screw rod, the second screw rod is threadedly connected to the second slider 145, and the motor rotates the second screw rod, and the second screw rod drives the upward transfer platform 141 to move vertically through the second slider 145; for another example, the second vertical drive mechanism 142 includes a motor, and the output shaft of the motor is connected to a sprocket chain transmission mechanism installed on a vertical frame, the second slider 145 is fixed on the chain, and the upward transfer platform 141 and the second slider 145 move vertically with the operation of the chain.

[0044] In one embodiment, the upward transfer platform 141 is a conveying plate, and the second conveying mechanism 143 is an electric push rod installed on the second stand 144, and the telescopic shaft of the electric push rod extends from left to right to push the foaming mold 20 on the upward transfer platform 131 onto the upper conveyor belt 12. In another embodiment, the upward transfer platform 141 is a conveyor belt structure, and the conveyor belt structure is the second conveying mechanism 143. The upward transfer platform 141 of the conveyor belt structure runs to the left to convey the foaming mold 20 thereon to the upper conveyor belt 11.

[0045] In another preferred embodiment, the production line further includes an air injection station D disposed between the placing station B and the injection station C. The air injection station D is provided with an air injection nozzle 40 connected to the air source through an air supply hose 41. The air injection nozzle 40 can be connected to the injection port 21 of the foaming mold 20 at the air injection station D and inject air into the headrest cover in the foaming mold 20. The air injection nozzle 40 is located above the foaming mold 20 at the air injection station D. The air injection nozzle 40 is connected to an air injection drive mechanism 42 that drives it to move vertically to approach or move away from the foaming mold 20 below it. The air injection drive mechanism 42 can adopt the structure of an electric cylinder, an air cylinder or a motor + a lead screw in the prior art, and can drive the air injection nozzle 40 to move vertically.

[0046] After placing the part into the foaming mold 20 at the part placing station B and before the injection gun head 30 injects material into the headrest cover in the foaming mold 20, when the foaming mold 20 moves to the gas injection station D along with the upper conveyor belt 11, the gas injection drive mechanism 42 is actuated to make the gas injection nozzle 40 move downward and connect with the injection port 21 of the foaming mold 20, and the gas injection nozzle 40 injects gas into the headrest cover in the foaming mold 20. The injected gas blows up the shrunk corners or wrinkles of the headrest cover, so that the foaming material injected subsequently can completely fill the headrest cover after expansion, without the situation of missing foaming material at the corners, and the appearance is more beautiful.

[0047] In the description of this specification, the description with reference to the terms "preferred embodiment", "one embodiment", "some embodiments", "example", "specific example" or "some examples" means that the specific features, structures, materials or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the utility model. In this specification, the schematic representation of the above terms does not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described can be combined in any one or more embodiments or examples in a suitable manner.

[0048] Although the embodiments of the present invention have been shown and described, those skilled in the art will appreciate that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the claims and their equivalents.

Claims

1. A car headrest foaming production line, comprising a conveyor line, a plurality of foaming molds installed at intervals on the conveyor line, a pick-up station, a placement station and a material injection station located downstream of the placement station, characterized in that: The conveyor line includes an upper conveyor belt, a lower conveyor belt located below the upper conveyor belt, a downward transfer device for transferring the foaming mold output from the upper conveyor belt to the lower conveyor belt, and an upward transfer device for transferring the foaming mold output from the lower conveyor belt to the upper conveyor belt; The injection station is provided with an injection gun head connected to the injection equipment through an injection hose. The injection gun head can be connected to the injection port of the foaming mold at the injection station and inject material into the headrest cover in the foaming mold.

2. The automobile headrest foaming production line according to claim 1, characterized in that: The downward transfer device comprises a downward transfer platform and a first vertical drive mechanism for driving the downward transfer platform to move vertically, wherein the downward transfer platform can be in an upper transfer position docked and flush with the end of the upper conveyor belt, and in a lower transfer position docked and flush with the beginning of the lower conveyor belt; The foaming mold output from the end of the upper conveyor belt can move to the downward transfer platform at the upper transfer position, and the downward transfer device also includes a first conveying mechanism that conveys the foaming mold on the downward transfer platform at the lower transfer position to the lower conveyor belt.

3. The automobile headrest foaming production line according to claim 2, characterized in that: The outer side of the conveyor line is fixedly connected with a first stand, the first stand is vertically slidably connected with a first slider, the first vertical drive mechanism is installed on the first stand and drives the first slider to move vertically, and the downward transfer platform is installed on the first slider and moves vertically with the first slider; The first vertical driving mechanism includes a motor, the output shaft of the motor is coaxially fixed with a first vertically extending screw rod, and the first screw rod is threadedly connected to the first slider; or the first vertical driving mechanism includes a motor, the output shaft of the motor is connected to a sprocket chain transmission mechanism installed on a vertical frame, and the first slider is fixed on the chain.

4. The automobile headrest foaming production line according to claim 2, characterized in that: The downward transfer platform is a conveying plate, and the first conveying mechanism is an electric push rod; Alternatively, the downward transfer platform is a conveyor belt structure, and the conveyor belt structure is the first conveying mechanism.

5. The automobile headrest foaming production line according to claim 1, characterized in that: The upward transfer device includes an upward transfer platform and a second vertical drive mechanism for driving the upward transfer platform to move vertically, wherein the upward transfer platform can be in a lower transfer position docked and flush with the end of the lower conveyor belt, and in an upper transfer position docked and flush with the beginning of the upper conveyor belt; The foaming mold outputted from the end of the lower conveyor belt can move to the upward transfer platform at the lower transfer position, and the upward transfer device also includes a second conveying mechanism that conveys the foaming mold on the upward transfer platform at the upper transfer position to the upper conveyor belt.

6. The automobile headrest foaming production line according to claim 5, characterized in that: A second stand is fixedly connected to the outer side of the conveyor line, a second slider is vertically slidably connected to the second stand, a second vertical drive mechanism is installed on the second stand and drives the second slider to move vertically, and the upward transfer platform is installed on the second slider and moves vertically with the second slider; The second vertical driving mechanism includes a motor, the output shaft of the motor is coaxially fixed with a second vertically extending screw rod, and the second screw rod is threadedly connected to the second slider; or the second vertical driving mechanism includes a motor, the output shaft of the motor is connected to a sprocket chain transmission mechanism installed on the vertical frame, and the second slider is fixed on the chain.

7. The automobile headrest foaming production line according to claim 5, characterized in that: The upward transfer platform is a conveying plate, and the second conveying mechanism is an electric push rod; Alternatively, the upward transfer platform is a conveyor belt structure, and the conveyor belt structure is the second conveying mechanism.

8. An automobile headrest foaming production line according to any one of claims 1-7, characterized in that: The injection gun head is located above the foaming mold at the injection station, and is connected to an injection driving mechanism that drives the injection gun head to move vertically so as to approach or move away from the foaming mold below it.

9. An automobile headrest foaming production line according to any one of claims 1-7, characterized in that: It also includes an air injection station located between the placement station and the injection station, wherein the air injection station is provided with an air injection nozzle connected to the air source through an air supply hose, the air injection nozzle can be connected to the injection port of the foaming mold at the air injection station and inject air into the headrest cover in the foaming mold.

10. The automobile headrest foaming production line according to claim 9, characterized in that: The gas injection nozzle is located above the foaming mold at the gas injection station, and is connected to a gas injection driving mechanism that drives the gas injection nozzle to move vertically so as to approach or move away from the foaming mold below it.

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