Framework periphery flanging corner area hemming mechanism

Abstract

A framework periphery flanging corner area curling mechanism comprises a lower die, an upper die is arranged above the lower die, a floating insert is arranged in the lower die and connected with the lower die through a first spring, a push block and a push block driving device are arranged on the lower die, the power output end of the push block driving device is connected with the push block, and the power output end of the push block driving device is connected with the upper die. A pressing block driving device is arranged above the lower die, the power output end of the pressing block driving device is connected with a pressing block through a second spring, a fixed base is arranged on one side of the lower die, a transverse driving device is arranged on the fixed base, and the power output end of the transverse driving device is connected with a hemming block. The device is suitable for a product piece with a curled edge in a corner area of a skin curled edge of an appearance piece with a framework periphery turnup shape and easy to wrinkle, the pressing block driving device is used for driving the pressing block to press the corner area of the skin on the pushing block, and then the pushing block driving device is used for driving the pushing block to move leftwards, so that wrinkles can be reduced, and the production efficiency is improved. And firm bonding between the skeleton and the skin is ensured.

Description

Technical Field

[0001] The utility model relates to the field of machinery, in particular to a technology for coating and curling the surface of automobile interior decoration parts, in particular to a curling mechanism for the corner area of the frame periphery flanging. Background Art

[0002] Traditional automotive interior hemming dies come in two types. One is to use a vacuum forming die to attach the skin to the injection molded skeleton using vacuum negative pressure. After removal, the excess skin is sheared off and then hemmed using a hemming die or manually to meet the requirements for part loading. The other type does not require pre-wrapping. The skin is fixed to the lower mold, and the skeleton is fixed to the upper mold through high-temperature heating. The skin is heated and softened using infrared heating tubes. Each of the above processes is affected by the product shape and heating method, as well as the degree of difference in glue properties. In the existing technology, when hemming the corner area of the skeleton circumference flange, there is a problem that wrinkles are easily formed in the corner area. Summary of the Invention

[0003] The purpose of the utility model is to provide a frame circumferential flange corner area curling mechanism, the frame circumferential flange corner area curling mechanism is to solve the technical problem in the prior art that the frame circumferential flange corner area curling is prone to wrinkling.

[0004] The utility model provides a curling mechanism for the corner area of the circumferential flanging of a skeleton, comprising a lower mold, an upper mold is arranged above the lower mold, a floating insert is arranged in the lower mold, the floating insert is connected to the lower mold by a first spring, the first spring biases the floating insert upward, and a push block and a push block driving device are provided on the lower mold, the power output end of the push block driving device is connected to the push block, and the push block and the lower mold form a sliding pair in the horizontal direction, a movable heating device and a pressure block driving device are arranged above the lower mold, the power output end of the pressure block driving device is connected to a lifting seat, and the bottom of the lifting seat is connected to the pressure block by a second spring, and the pressure block is located above the push block, a fixed base is provided on one side of the lower mold, a transverse driving device is provided on the fixed base, the power output end of the transverse driving device is connected to the transverse moving seat, and the transverse moving seat is provided with a longitudinal driving device, and the power output end of the longitudinal driving device is connected to the curling block, and the curling block is located above the lower mold.

[0005] Furthermore, the mobile heating device is an infrared heating device.

[0006] Compared with the existing technology, the utility model has a positive and obvious effect. The utility model is suitable for products with a frame-circumferential flange shape and the curling of the surface of the surface is prone to wrinkling. The utility model uses a pressing block driving device to drive the pressing block to press the corner area of the surface tightly against the push block, and then uses the push block driving device to drive the push block to move left, thereby reducing wrinkles and eliminating bulges, ensuring a firm bond between the frame and the surface, ensuring good peel strength, and at the same time ensuring good product matching performance after pressing and meeting loading requirements. BRIEF DESCRIPTION OF THE DRAWINGS

[0007] Figure 1 It is a front view schematic diagram of a curling mechanism for the frame perimeter flanging corner area of the present invention.

[0008] Figure 2 It is a top view schematic diagram of a curling mechanism for the corner area of the frame perimeter flange of the present invention. DETAILED DESCRIPTION

[0009] The following is a further description of the present invention in conjunction with an embodiment. However, the present invention is not limited to the embodiment. All similar structures and similar variations of the present invention should be included in the scope of protection of the present invention. The use of directions such as up, down, front, back, left, and right in the present invention is only for the convenience of clear description and does not limit the technical solution of the present invention.

[0010] like Figure 1 and Figure 2 As shown, a skeleton perimeter flanging corner area curling mechanism of the present invention comprises a lower die 4, an upper die 1 is arranged above the lower die 4, a floating insert 5 is arranged in the lower die 4, the floating insert 5 is connected to the lower die 4 through a first spring 6, the first spring 6 biases the floating insert 5 upward, a push block 9 and a push block driving device 16 are arranged on the lower die 4, the power output end of the push block driving device 16 is connected to the push block 9, the push block 9 and the lower die 4 form a horizontal sliding pair, and a mobile heating device 2 and a pressure device are arranged above the lower die 4. The block driving device 14, the power output end of the pressure block driving device 14 is connected to the lifting seat 17, the bottom of the lifting seat 17 is connected to the pressure block 12 through the second spring 13, the pressure block 12 is located above the push block 9, and a fixed base 7 is provided on one side of the lower mold 4. A horizontal driving device 8 is provided on the fixed base 7. The power output end of the horizontal driving device 8 is connected to the horizontal moving seat, and the horizontal moving seat is provided with a longitudinal driving device 10. The power output end of the longitudinal driving device 10 is connected to the curling block 11, and the curling block 11 is located above the lower mold 4.

[0011] Furthermore, the mobile heating device 2 is an infrared heating device.

[0012] Specifically, the upper mold 1, the pushing block driving device 16, the mobile heating device 2, the pressing block driving device 14, the transverse driving device 8, the longitudinal driving device 10, the infrared heating device, etc. in this embodiment all adopt well-known solutions in the prior art, which are well understood by those skilled in the art and will not be elaborated here.

[0013] The working principle of this embodiment is as follows:

[0014] The middle of the skin is fixed on the floating insert 5, the periphery of the skin is placed on the lower mold 4, and the corner area 3 of the skin is placed on the push block 9. The injection molding skeleton 15 for activating the glue is fixed to the upper mold 1. After confirmation, the upper mold 1 descends to the set height and stops. The mobile heating device 2 descends to heat the skin to soften it. After heating is completed, it returns. The pressure block driving device 14 drives the pressure block 12 downward to press the corner area 3 of the skin (the pressure block 12 is pressed on the push block 9). The elastic force of the spring 13 will increase as the pressure block driving device 14 extends. Then the upper mold 1 descends again to close the mold. At the same time, the pressure block driving device 14 slowly ascends through the pressure relief control as the upper mold 1 descends. The downward distance of the upper mold 1 is equal to the upward distance of the pressure block driving device 14. At the moment the mold is closed, the pressure block 12 and the floating insert 5 are in a state of pressing the skin. After the mold is closed, the floating insert 5 moves down. At this time, the push block driving device 16 drives the push block 9 to move left and forward to press the skin (at this time, the pressure of the pressure block 14 is small, and the push block 9 can move left). Then the pressure block driving device 14 drives the pressure block 12 to rise and return to its original position. Next, the transverse drive device 8 drives the curling block 11 to move left, and the longitudinal drive device 10 drives the curling block 11 to press down the corner area 3 of the skin to complete the curling action, and then resets, opens the mold and takes out the product.

[0015] The present invention is suitable for products with an appearance part with a frame circumference flange and a surface curling corner area that is prone to wrinkles. The present invention utilizes a pressing block driving device 14 to drive the pressing block 12 to press the corner area 3 of the surface onto the push block 9, and then utilizes the pushing block driving device 16 to drive the pushing block 9 to move left, thereby reducing wrinkles and eliminating bulges, ensuring a firm bond between the frame and the surface, ensuring good peeling strength, and at the same time meeting the good matching performance of the product after pressing and meeting the loading requirements.

[0016] Compared with the existing curling die, the utility model has the following advantages:

[0017] 1. The mold does not require pre-wrapping, reducing the workload of front-line operators.

[0018] 2. This mold is suitable for interior decoration products with small parts and continuous bends.

[0019] 3. Reduce the problem of wrinkles at the corners of the circumference.

[0020] 4. Reduce the development of vacuum forming mold tooling equipment.

Claims

1. A frame perimeter flanging corner area curling mechanism, characterized by: The cam is provided with a first spring which is arranged on the bottom of the cam and a second spring which is arranged on the bottom of the cam, and the cam is provided with a second spring which is arranged on the bottom of the cam.

2. The frame perimeter flanging corner area curling mechanism according to claim 1, characterized in that: The mobile heating device is an infrared heating device.

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