Preheating device for PU forming of steering wheel

Abstract

The utility model relates to the technical field of steering wheel production and processing, in particular to a preheating device for PU (polyurethane) forming of a steering wheel. An automatic door assembly is arranged on the top opening; the automatic door assembly comprises a door opening motor and a first rotating shaft rotationally connected to the sealing box body. A sealing plate is fixed on the first rotating shaft; the reduction gearbox is connected between the first rotating shaft and the door opening motor; and the door opening motor is fixed on the sealed box body. When the structure is used, the sealing plate controlled by the door opening motor is arranged at the opening position of the inlet and outlet top of the steering wheel framework, so that heat loss can be reduced, the temperature in the box is more stable, and energy consumption is reduced.

Description

Technical Field

[0001] This utility model relates to the field of steering wheel manufacturing and processing technology, and in particular to a preheating device for PU molding of steering wheels. Background Technology

[0002] After the steering wheel frame is formed, it needs to be wrapped with PU material. Before the steering wheel frame enters the PU wrapping mold, the steering wheel needs to be preheated to a set temperature.

[0003] In the existing steering wheel production process, the steering wheel frame is transported as a whole to an oven via a material cart and baked to a specified temperature. Then, a robotic arm removes the steering wheel frames one by one and places them into a mold. To avoid obstructing the robotic arm, an opening needs to be provided at the top of the oven above the material cart to allow the robotic arm to reach in. However, this open oven structure results in unstable internal temperatures, which can easily affect the quality of the PU molding of the steering wheel. Furthermore, the open oven structure causes heat to dissipate outwards, increasing the energy consumption of the preheating device. Utility Model Content

[0004] The purpose of this invention is to address the shortcomings and deficiencies of existing technologies by providing a preheating device for PU molding of steering wheels.

[0005] To achieve the above objectives, the technical solution adopted by this utility model is as follows:

[0006] The present invention discloses a preheating device for PU molding of steering wheels, which includes a sealed housing body, a hot air assembly, and a material cart disposed inside the sealed housing body; the hot air assembly is used to heat the inner cavity of the sealed housing body; and multiple side doors are provided on the side surface of the sealed housing body.

[0007] The top surface of the sealed housing body is provided with a top opening; an automatic door assembly is provided on the top opening; the automatic door assembly includes a door opening motor and a first rotating shaft rotatably connected to the sealed housing body; a sealing plate is fixed on the first rotating shaft; a reduction gearbox is connected between the first rotating shaft and the door opening motor; the door opening motor is fixed on the sealed housing body.

[0008] Furthermore, the interior of the sealed housing body is provided with a material cart conveying assembly for conveying the material cart to below the top opening; the material cart conveying assembly includes a conveying motor with one end fixed to the sealed housing body, a driven sprocket rotatably connected to the sealed housing body, and a second rotating shaft fixed to the other end of the conveying motor; a driving sprocket is fixed on the second rotating shaft; a conveying chain is connected between the driving sprocket and the driven sprocket; the conveying chain is horizontally arranged; multiple locking pins are evenly distributed on the conveying chain; the side surface of the material cart is provided with a positioning concave shape for matching the locking pins; a limit wheel assembly is fixed on the inner bottom wall of the sealed housing body; the limit wheel assembly consists of multiple rollers; the locking pins and rollers are arranged along the length direction of the conveying chain.

[0009] Furthermore, there are two side doors; one of them is located at one end of the material car conveying assembly in the feeding direction; the other side door is located at one end of the material car conveying assembly in the discharging direction.

[0010] Furthermore, a material lifting assembly is provided below the top opening; the material lifting assembly includes a bracket, a lifting motor, and a column fixed to the sealed box body; a lifting guide rail is fixed on the column; a lifting slider that is slidably connected to the lifting guide rail is fixed on the bracket; a lead screw nut is fixed on the bracket; one end of the lifting motor is fixed to the sealed box body; a lead screw is fixed to the other end of the lifting motor; the lead screw is threaded onto the lead screw nut.

[0011] With the above structure, the beneficial effects of this utility model are as follows: when the robot arm does not have a material picking requirement, the sealing plate is sealed on the top opening, reducing heat loss from the top opening; when the external robot arm has a material picking requirement, a signal is sent to the control system, and after the door opening motor is activated, it drives the first rotating shaft to rotate through the reduction gearbox, causing the sealing plate to flip upward, and the steering wheel frame can be taken out from the top opening; the flipping range of the sealing plate is controlled by a sensor to control the rotation of the door opening motor.

[0012] This structure features a sealing plate controlled by a door opening motor at the top opening of the steering wheel frame, which reduces heat loss, stabilizes the internal temperature, and lowers energy consumption. Attached Figure Description

[0013] Figure 1 This is a schematic diagram of the structure of this utility model;

[0014] Figure 2 This is a structural diagram of the present invention after the side panel of the sealed box has been removed;

[0015] Figure 3 This is a structural diagram of an automatic door assembly;

[0016] Figure 4This is a structural diagram of the material lifting assembly;

[0017] Figure 5 This is a structural diagram of the material cart conveyor assembly;

[0018] Figure 6 yes Figure 5 Enlarged view of part A in the image;

[0019] Explanation of reference numerals in the attached figures:

[0020] 1. Sealed enclosure body; 101. Side door; 102. Limiting wheel assembly; 103. Top opening;

[0021] 2. Automatic door assembly; 201. Door opening motor; 202. Gearbox; 203. First rotating shaft;

[0022] 204. Sealing plate; 3. Material cart; 301. Positioning concave shape; 4. Hot air assembly; 5. Material lifting assembly;

[0023] 501. Column; 502. Lifting guide rail; 503. Lifting slider; 504. Lead screw; 505. Lead screw nut;

[0024] 506. Bracket; 507. Lifting motor; 6. Material cart conveying assembly; 601. Conveyor motor;

[0025] 602. Conveyor chain; 603. Driven sprocket; 604. Second shaft; 605. Drive sprocket;

[0026] 606. Pier. Detailed Implementation

[0027] The present invention will be further described below with reference to the accompanying drawings.

[0028] like Figures 1 to 6 As shown, the present invention discloses a preheating device for PU molding of steering wheels, comprising a sealed housing body 1, a hot air assembly 4, and a material cart 3 disposed inside the sealed housing body 1; the hot air assembly 4 is used to heat the inner cavity of the sealed housing body 1; the side surface of the sealed housing body 1 is provided with multiple side doors 101; the material cart 3 is not fundamentally different from the prior art, so it will not be described in detail; the hot air assembly 4 is not fundamentally different from the prior art, so it will not be described in detail. The hot air assembly 4 blows hot air according to the heating requirements to heat the product inside the sealed housing body 1; the side doors 101 are manual doors, which are equipped with locks. When the material cart 3 needs to enter or be taken out, the side doors 101 need to be opened; in the working state, the side doors 101 are sealed to reduce heat loss;

[0029] The top surface of the sealed housing body 1 is provided with a top opening 103; an automatic door assembly 2 is provided on the top opening 103; the automatic door assembly 2 includes a door opening motor 201 and a first rotating shaft 203 rotatably connected to the sealed housing body 1; a sealing plate 204 is fixed on the first rotating shaft 203; a reduction gearbox 202 is connected between the first rotating shaft 203 and the door opening motor 201; the door opening motor 201 is fixed on the sealed housing body 1.

[0030] When the robotic arm does not have a material handling requirement, the sealing plate 204 is sealed on the top opening 103 to reduce heat loss from the top opening 103;

[0031] When the external robotic arm needs to pick up materials, it sends a signal to the control system. After the door opening motor 201 is activated, it drives the first rotating shaft 203 to rotate through the reduction gearbox 202, causing the sealing plate 204 to flip upward, and the steering wheel frame can be taken out from the top opening 103. The flipping range of the sealing plate 204 is controlled by the sensor to achieve the rotation of the door opening motor 201.

[0032] In this structure, a sealing plate 204 controlled by a door opening motor 201 is installed at the top opening 103 of the steering wheel frame to reduce heat loss, making the temperature inside the box more stable and reducing energy consumption.

[0033] In a preferred embodiment of this utility model, the sealed housing body 1 is internally provided with a material cart conveying assembly 6 for conveying the material cart 3 to a position below the top opening 103; the material cart conveying assembly 6 includes a conveying motor 601 with one end fixed to the sealed housing body 1, a driven sprocket 603 rotatably connected to the sealed housing body 1, and a second rotating shaft 604 fixed to the other end of the conveying motor 601; a driving sprocket 605 is fixed on the second rotating shaft 604; the driving sprocket 605 and the driven sprocket... A conveyor chain 602 is connected between 603; the conveyor chain 602 is horizontally arranged; multiple locking posts 606 are evenly distributed on the conveyor chain 602; a positioning concave shape 301 is provided on the side surface of the material cart 3 for use with the locking posts 606; a limit wheel set 102 is fixed on the bottom wall of the inner wall of the sealed box body 1; the limit wheel set 102 is composed of multiple rollers; the locking posts 606 and the rollers are arranged along the length direction of the conveyor chain 602; the drive sprocket 605 is also rotatably connected to the sealed box body 1.

[0034] The limiting wheel set 102 serves as one of the positioning reference surfaces for the material cart 3; it is used to position the surface of the material cart 3 away from the positioning concave shape 301; after the material cart 3 enters the sealed box body 1 from the side near the driven sprocket 603, the conveyor motor 601 starts, and drives the conveyor chain 602 to move through the second rotating shaft 604, the driving sprocket 605 and the driven sprocket 603; during the movement of the conveyor chain 602, one of the locking pins 606 is locked into the positioning concave shape 301, and the locking pin 606 pulls the material cart 3 to move at the same speed as the conveyor chain 602 until the material cart 3 is conveyed to the bottom of the top opening 103.

[0035] In a preferred embodiment of this utility model, there are two side doors 101; one of them is located at one end of the material cart conveying assembly 6 in the feeding direction; the other side door 101 is located at one end of the material cart conveying assembly 6 in the discharging direction.

[0036] The side door 101 at one end in the feeding direction is used for the material cart 3 to enter; the side door 101 at one end in the discharging direction is used for the material cart 3 to be pulled out.

[0037] In a preferred embodiment of this utility model, a material lifting assembly 5 is provided below the top opening 103; the material lifting assembly 5 includes a bracket 506, a lifting motor 507, and a column 501 fixed on the sealed box body 1; a lifting guide rail 502 is fixed on the column 501; a lifting slider 503 that is slidably connected to the lifting guide rail 502 is fixed on the bracket 506; a lead screw nut 505 is fixed on the bracket 506; one end of the lifting motor 507 is fixed on the sealed box body 1; a lead screw 504 is fixed on the other end of the lifting motor 507; the lead screw 504 is threadedly connected to the lead screw nut 505;

[0038] The platform on material cart 3 used to load the steering wheel can be raised and lowered; bracket 506 is inserted under the platform;

[0039] The lifting motor 507 drives the lead screw 504 to rotate, causing the bracket 506 to move up and down along the lifting guide rail 502, so that the topmost steering wheel frame on the platform is always at the same height, making it convenient for the robotic arm to remove the steering wheel.

[0040] The above description is only a preferred embodiment of the present utility model. Therefore, all equivalent changes or modifications made to the structure, features and principles described in the claims of the present utility model patent application are included in the scope of the present utility model patent application.

Claims

1. A preheating device for PU molding of steering wheels, comprising a sealed housing body (1), a hot air assembly (4), and a material cart (3) disposed inside the sealed housing body (1); the hot air assembly (4) is used to heat the inner cavity of the sealed housing body (1); the side surface of the sealed housing body (1) is provided with a plurality of side doors (101); the hot air assembly (4) blows out hot air according to heating requirements to heat the product inside the sealed housing body (1); the side doors (101) are manual doors, which are equipped with door locks, and the side doors (101) need to be opened when the material cart (3) needs to enter or be taken out; in the working state, the side doors (101) are sealed; Its features are: The top surface of the sealed housing body (1) is provided with a top opening (103); an automatic door assembly (2) is provided on the top opening (103); the automatic door assembly (2) includes a door opening motor (201) and a first rotating shaft (203) rotatably connected to the sealed housing body (1); a sealing plate (204) is fixed on the first rotating shaft (203); a reduction gearbox (202) is connected between the first rotating shaft (203) and the door opening motor (201); the door opening motor (201) is fixed on the sealed housing body (1).

2. The preheating device for PU molding of a steering wheel according to claim 1, characterized in that: The sealed housing body (1) is internally equipped with a material cart conveying assembly (6) for conveying the material cart (3) to a position below the top opening (103); the material cart conveying assembly (6) includes a conveying motor (601) with one end fixed to the sealed housing body (1), a driven sprocket (603) rotatably connected to the sealed housing body (1), and a second rotating shaft (604) fixed to the other end of the conveying motor (601); a driving sprocket (605) is fixed on the second rotating shaft (604); the driving sprocket (605) A conveyor chain (602) is connected to the driven sprocket (603); the conveyor chain (602) is horizontally arranged; multiple locking pins (606) are evenly distributed on the conveyor chain (602); a positioning concave shape (301) is provided on the side surface of the material cart (3) to be used in conjunction with the locking pins (606); a limiting wheel set (102) is fixed on the bottom wall of the inner wall of the sealed box body (1); the limiting wheel set (102) is composed of multiple rollers; the locking pins (606) and the rollers are arranged along the length direction of the conveyor chain (602).

3. The preheating device for PU molding of a steering wheel according to claim 2, characterized in that: There are two side doors (101); one of them is located at one end of the material car conveying assembly (6) in the feeding direction; the other side door (101) is located at one end of the material car conveying assembly (6) in the discharging direction.

4. The preheating device for PU molding of a steering wheel according to claim 1, characterized in that: A material lifting assembly (5) is provided below the top opening (103); the material lifting assembly (5) includes a bracket (506), a lifting motor (507), and a column (501) fixed on the sealed box body (1); a lifting guide rail (502) is fixed on the column (501); a lifting slider (503) that is slidably connected to the lifting guide rail (502) is fixed on the bracket (506); a lead screw nut (505) is fixed on the bracket (506); one end of the lifting motor (507) is fixed on the sealed box body (1); a lead screw (504) is fixed on the other end of the lifting motor (507); the lead screw (504) is threaded onto the lead screw nut (505).

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