Turnover type automotive trim edge covering equipment and edge covering method thereof

By designing a flip-type interior wrapping equipment, the existing interior wrapping equipment has been improved, achieving efficient production of interior trim. This solves the problem of automated production of interior trim in the existing automotive trim panel wrapping process, and improves edge wrapping efficiency and quality stability.

CN121928784APending Publication Date: 2026-04-28ZHENYUE INTELLIGENT EQUIP (FOSHAN) CO LTD
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Applications(China)
Current Assignee / Owner
ZHENYUE INTELLIGENT EQUIP (FOSHAN) CO LTD
Filing Date
2026-02-10
Publication Date
2026-04-28

AI Technical Summary

Technical Problem

In the existing technology, the process of covering the interior trim of automobiles is carried out manually, which is inefficient and has poor quality stability, making it difficult to meet the needs of large-scale mass production.

Method used

A flip-type automotive interior trim edge-wrapping device was designed, including a support mechanism, a mold, a heating and pressing mechanism, an edge-wrapping mechanism, and a punching knife. The device achieves edge-wrapping of the interior surface through an automated process. The support mechanism and the heating and pressing mechanism support, heat, and press the semi-finished interior trim, the edge-wrapping mechanism wraps the edges, and the punching knife punches holes during the pressing process.

Benefits of technology

It improves edge-binding efficiency and product quality stability, ensuring a tight fit between the interior skin and the interior frame, avoiding bulges or wrinkles. It achieves both automated production and high-efficiency production of the interior skin.

✦ Generated by Eureka AI based on patent content.

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Abstract

The invention relates to the technical field of automobile interiors, in particular to turnover type automobile interior edge covering equipment and an edge covering method.The turnover type automobile interior edge covering equipment comprises a supporting mechanism and edge covering devices arranged on the supporting mechanism, and each edge covering device comprises a mold, a turnover part, a heating part, a pressing part, a clamping part, an edge covering mechanism and a punching knife; the mold is used for supporting the interior semi-finished product; the overturning part is used for overturning the heating part, the pressing part and the clamping part downwards and upwards relative to the mold; the heating part is used for heating the interior skin located on the first edge and the second edge of the interior framework on the mold; the pressing part is used for pressing the trim semi-finished product on the mold; the clamping part is used for clamping or loosening the hemmed trim semi-finished product; the punching knife is used for punching the interior trim skin; and the edge covering mechanism is used for covering the edge of the interior framework. Through the combined action of all the mechanisms, the automation degree is high, and the edge covering efficiency and the quality stability are improved.
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Description

Technical Field

[0001] This invention relates to the field of automotive interior technology, and in particular to a flip-type automotive interior trim wrapping device and its wrapping method. Background Technology

[0002] With the rapid development of the automotive industry, consumers are increasingly demanding higher quality from car interior trim, as its appearance and texture directly affect the overall interior quality and user experience. Traditional automotive interior trim covering processes are generally manual, typically involving the following steps: operators first lay pre-cut leather, fabric, or artificial leather materials flat on a mold or tooling board; then, the trim frame is placed on top of the trim; and the trim is then covered by the frame through manual stretching, pressing, and folding. The edges are then secured with glue or clips, and finally, ironing and trimming complete the covering process.

[0003] However, the edge wrapping of a single trim panel requires multiple processes such as positioning, ironing, and trimming. Due to the limitations of manual operation speed, it is difficult to meet the needs of large-scale mass production. This not only results in low efficiency but also poor quality stability. Different batches of products are prone to problems such as loosening of the interior surface, local wrinkling, and misaligned stitching.

[0004] Therefore, it is necessary to improve existing technologies to solve the above problems. Summary of the Invention

[0005] The purpose of this invention is to provide a flip-type automotive interior trim wrapping device and its wrapping method, which aims to solve the problems of low efficiency and poor quality stability caused by manual operation in the existing automotive trim panel surface wrapping process.

[0006] To achieve the above objectives, the present invention provides a flip-type automotive interior trim edge-wrapping device for edge-wrapping semi-finished interior trim products. The semi-finished interior trim product includes an interior trim frame and an interior trim skin pasted onto the interior trim frame. The edges of the interior trim frame include a first edge, a second edge, a third edge, and a fourth edge connected in sequence. The third edge and the fourth edge are each provided with mounting holes. The device includes a support mechanism and an edge-wrapping device disposed on the support mechanism. The edge-wrapping device includes a mold, a heating and pressing mechanism, an edge-wrapping mechanism, and a punch. The support mechanism is provided with a support platform. The mold is movably mounted on the support platform by means of a mold resetting component, and the mold is used to support the semi-finished interior trim product. The heating and pressing mechanism includes a flipping part, a heating part, a pressing part, and a clamping part. The flipping part is disposed on the support platform and includes a flipping plate that can be flipped down and up. The heating part, the pressing part, and the clamping part are all mounted on the flipping plate. The heating part is movably mounted on the flipping plate and is used to press the mold... The interior trim skin located at the first and second edges of the interior trim frame on the tire is heated; the pressing part is vertically and flexibly mounted on the flip plate to press the interior trim semi-finished product onto the mold and push it down to the edge-wrapping position; the clamping part is mounted on the pressing part to clamp or release the edge-wrapped interior trim semi-finished product; the edge-wrapping mechanism is mounted on the support platform and located around the mold, and includes a first edge-wrapping part for wrapping the first edge and a second edge-wrapping part for wrapping the second edge; multiple punching knives are provided and fixed on the support platform and located below the mold, and the mold has through holes corresponding to the mounting holes. The punching knives can pass through the through holes. During the pressing part's process of pushing the interior trim semi-finished product down to the edge-wrapping position, the punching knives punch holes in the interior trim skin after passing through the through holes. When the pressing part descends, the mold reset component maintains an upward reset force on the mold; when the pressing part rises, the mold is lifted by the mold reset component to reset.

[0007] Furthermore, the first edge includes an outer extension segment, a first outer edge segment, an inner bend corner segment, and an upper extension segment connected in sequence; the second edge includes a second outer edge segment and a lower bend corner segment connected in sequence; the first edge-wrapping portion includes a first edge-wrapping assembly, a second edge-wrapping assembly, a third edge-wrapping assembly, a fourth edge-wrapping assembly, and a fifth edge-wrapping assembly. The first edge-wrapping assembly is used to wrap the outer extension segment, the second edge-wrapping assembly is used to wrap the first outer edge segment, the third edge-wrapping assembly is used to wrap the inner bend corner segment, and the fourth and fifth edge-wrapping assemblies are used to wrap the upper extension segment; the second edge-wrapping portion includes a plurality of sixth edge-wrapping assemblies and a seventh edge-wrapping assembly. The plurality of sixth edge-wrapping assemblies are used to wrap the second outer edge segment, and the seventh edge-wrapping assembly is used to wrap the lower bend corner segment.

[0008] Furthermore, the outer extension is a straight, flat structure and includes an upper surface. The first edge-sealing assembly includes a first horizontal push block and a first flat push drive. During edge-sealing, the first flat push drive drives the first horizontal push block to move inward, and the first horizontal push block pushes the interior trim inward to the upper surface of the outer extension. The first outer edge segment is a bent structure and includes an upper edge and an inner surface bent downward from the upper edge. The second edge-sealing assembly includes a second horizontal push block, a second flat push drive, a second hook-shaped pressing block, and a second lifting drive. During edge-sealing, the second flat push drive first drives the second horizontal push block, the second hook-shaped pressing block, and the second lifting drive to move inward. The second horizontal pusher pushes the interior trim inward to the upper edge of the first outer edge segment, and the second hook-shaped pressing block is located above the first outer edge segment. Then, the second lifting drive drives the second hook-shaped pressing block to descend, and the second hook-shaped pressing block presses the interior trim downward to the inner surface of the first outer edge segment. The inner curved corner segment has a bent structure and includes a flat L-shaped edge and an L-shaped inner surface bent downward from the flat L-shaped edge. The third edge-wrapping assembly includes a third horizontal pusher, a third flat push drive, a third hook-shaped pressing block, and a third lifting drive. The ends of the third horizontal pusher and the third hook-shaped pressing block are both L-shaped in the vertical projection direction. During edge wrapping... The third horizontal push drive first drives the third horizontal push block, the third hook-shaped pressing block, and the third lifting drive to move inward. The third horizontal push block pushes the interior trim inward to the flat L-shaped edge of the inner bend corner section, and the third hook-shaped pressing block is located above the inner bend corner section. Then, the third lifting drive drives the third hook-shaped pressing block to descend, and the third hook-shaped pressing block presses the interior trim down to the L-shaped inner surface of the inner bend corner section. The upper extension is a bent structure and includes an outer surface, an inner surface, and a side edge located between the outer surface and the inner surface. The fourth edge-wrapping assembly includes a fourth vertical push block, a fourth horizontal push drive, a fourth hook-shaped pressing block, and a fourth vertical push block. The lifting drive component and the fifth edge-wrapping assembly include a fifth vertical push block and a fifth horizontal push drive component. During edge wrapping, the fifth horizontal push drive component first drives the fifth vertical push block to move laterally, and the fifth vertical push block pushes the interior trim to the outer surface of the upper extension. Then, the fourth horizontal push drive component drives the fourth vertical push block, the fourth hook-shaped pressing block, and the fourth lifting drive component to move inward. The fourth vertical push block pushes the interior trim to the side edge of the upper extension, and the fourth hook-shaped pressing block is located above the upper extension. Then, the fourth lifting drive component drives the fourth hook-shaped pressing block to descend, and the fourth hook-shaped pressing block presses the interior trim down to the inner surface of the upper extension.

[0009] Furthermore, the second outer edge segment has a bent structure and includes an upward edge and an inner surface bent downward from the upward edge. Each sixth edge-sealing assembly includes a sixth horizontal push block, a sixth flat push drive, a sixth hook-shaped pressing block, and a sixth lifting drive. During edge sealing, the sixth flat push drive of the plurality of sixth edge-sealing assemblies drives the sixth horizontal push block, the sixth hook-shaped pressing block, and the sixth lifting drive to move inward. The plurality of sixth horizontal push blocks push the interior trim inward to the upward edge of the second outer edge segment, and the plurality of sixth hook-shaped pressing blocks are located above the second outer edge segment. Then, the plurality of second lifting drive components drive the sixth hook-shaped pressing blocks to descend, and the sixth hook-shaped pressing blocks press the interior trim downward to the second outer edge segment. The inner surface; the lower bend corner section is a straight and flat structure and includes an upright L-shaped edge and an L-shaped inner surface extending horizontally and downward from the upright L-shaped edge. The seventh edge-wrapping assembly includes a seventh horizontal push block, a seventh flat push drive, a seventh hook-shaped inclined pressure block and a seventh lifting drive. During edge wrapping, the seventh flat push drive first drives the seventh horizontal push block, the seventh hook-shaped inclined pressure block and the seventh lifting drive to move inward. The seventh horizontal push block pushes the interior trim inward to the upright L-shaped edge of the lower bend corner section, and the seventh hook-shaped inclined pressure block is located above the upright L-shaped edge. Then, the seventh lifting drive drives the seventh hook-shaped inclined pressure block to descend, and the seventh hook-shaped inclined pressure block presses the interior trim down to the L-shaped inner surface.

[0010] Furthermore, the heating unit includes a heating drive, a heating mounting plate, and a heating tube. The heating mounting plate can be driven by the heating drive to rise and fall relative to the tilting plate. The heating tube is disposed on the heating mounting plate, and a protective enclosure is provided on the side of the heating tube. Multiple clamping blocks are provided below the heating tube.

[0011] Furthermore, the flipping part also includes a support frame, a flipping drive, a first locking assembly, and a second locking assembly. The support frame is disposed on the support platform, the flipping drive is disposed on the support frame and can drive the flipping plate to rotate on the support frame, and the first locking assembly and the second locking assembly are both disposed on the support frame. When the flipping drive drives the flipping plate to flip down, the first locking assembly locks the flipping plate. When the flipping drive drives the flipping plate to flip up, the second locking assembly can lock the flipping plate.

[0012] Furthermore, the first locking assembly is provided in at least two sets. The first locking assembly includes a first locking drive, a first locking mounting plate, and a first locking block. The support frame is provided with a crossbeam. The first locking mounting plate is provided on the crossbeam. The first locking drive is provided on the first locking mounting plate. A first locking hole block is provided on the side of the flip plate parallel to the crossbeam. When the flip drive drives the flip plate to flip down, the first locking hole block can be supported by the first locking mounting plate, and the first locking block can be driven by the first locking drive to extend into the first locking hole of the first locking hole block.

[0013] Furthermore, the second locking assembly includes a second locking drive and a second locking block. The support frame is provided with a hinge seat for hinged with the flip plate. The second locking drive is provided on the hinge seat. The side of the flip plate opposite to the hinge seat is provided with a second locking hole block. When the flip drive drives the flip plate to flip up, the second locking block can be driven by the second locking drive to extend into the second locking hole of the second locking hole block.

[0014] The present invention also provides an edge-wrapping method based on the above-described flip-type automotive interior edge-wrapping device, comprising the following steps:

[0015] S1. The staff places the semi-finished interior trim onto the mold.

[0016] S2. The flipping section flips the flipping plate downwards;

[0017] S3. The heating element descends to heat the interior trim located at the first and second edges of the interior frame, and then returns to its original position after heating.

[0018] S4. The pressing part descends to press the interior semi-finished product onto the mold, while the mold is pushed down to the edge. At the same time, the punch drills holes in the interior surface.

[0019] S5. The fifth edge-binding component binds the upper extension segment; then the fourth edge-binding component binds the upper extension segment, while the first edge-binding component binds the outer extension segment, and the seventh edge-binding component binds the lower bend corner segment; after binding, the fourth edge-binding component, the first edge-binding component, and the seventh edge-binding component reset simultaneously, and then the fifth edge-binding component resets.

[0020] S6. The third edge-sealing component seals the inner bend corner segment; after sealing, the third edge-sealing component resets.

[0021] S7. The second edge-binding component binds the first outer edge segment, while multiple sixth edge-binding components bind the second outer edge segment; after binding, the second edge-binding component and multiple sixth edge-binding components reset simultaneously.

[0022] S8. The clamping part clamps the pre-finished interior trim;

[0023] S9. The clamping part rises and resets, and the mold rises and resets with the help of the mold reset part;

[0024] S10, The flipping section flips the flipping plate up;

[0025] S11. The clamping part releases the pre-wrapped interior semi-finished product;

[0026] S12. Staff members remove the pre-finished interior trim that has already been edged.

[0027] The present invention provides a flip-type automotive interior trim binding device and its binding method. Compared with the prior art, through the combined action of a support mechanism, a mold, a heating and pressing mechanism, a binding mechanism, and a punching tool, this flip-type automotive interior trim binding device not only has a high degree of automation but also improves binding efficiency and product quality stability, resulting in a better binding effect. Based on the hardware configuration of this embodiment and the steps set in S5 to S7 above, this embodiment can achieve perfect binding of semi-finished interior trim products in an extremely limited space. After binding, all bound areas of the interior trim surface remain tightly fitted to the interior trim frame without any bulges or wrinkles. Attached Figure Description

[0028] Figure 1 This is a three-dimensional structural diagram of the interior frame of the present invention;

[0029] Figure 2 yes Figure 1 A magnified structural diagram of part A in the middle;

[0030] Figure 3 This is a three-dimensional structural schematic diagram of the present invention;

[0031] Figure 4 This is a three-dimensional structural diagram of the present invention after the hidden support mechanism is shown;

[0032] Figure 5 This is an exploded view of the present invention with the support mechanism hidden.

[0033] Figure 6 This is a three-dimensional structural diagram of the mold of the hidden part of the present invention in its initial state;

[0034] Figure 7 This is a three-dimensional structural diagram of the rear mold of the hidden part of the present invention, in which the interior frame is placed and in the edge-wrapping position.

[0035] Figure 8 yes Figure 7 A magnified structural diagram of part B in the middle section;

[0036] Figure 9 yes Figure 7 A magnified structural diagram of section C;

[0037] Figure 10 This is a three-dimensional structural diagram of the first edge-sealing portion of the present invention;

[0038] Figure 11 This is a three-dimensional structural schematic diagram of the third edge-sealing component of the present invention;

[0039] Figure 12 This is a three-dimensional structural schematic diagram of the fourth edge-sealing component of the present invention;

[0040] Figure 13This is a three-dimensional structural diagram of the second edge portion of the present invention;

[0041] Figure 14 This is a three-dimensional structural schematic diagram of the sixth edge-sealing component of the present invention;

[0042] Figure 15 This is a three-dimensional structural schematic diagram of the seventh edge-sealing component of the present invention;

[0043] Figure 16 This is a three-dimensional structural diagram of the heating and pressing mechanism of the present invention in the upward-flipped state. Figure 1 ;

[0044] Figure 17 This is a three-dimensional structural diagram of the heating and pressing mechanism of the present invention in the upward-flipped state. Figure 2 ;

[0045] Figure 18 This is a three-dimensional structural diagram of the heating and pressing mechanism of the present invention in the downward flipped state;

[0046] Figure 19 This is a three-dimensional structural diagram of the flipping part of the present invention;

[0047] Figure 20 This is a three-dimensional structural diagram of the heating part of the present invention.

[0048] Explanation of reference numerals in the attached figures:

[0049] 1. Interior frame; 11. First edge; 111. Outer extension; 112. First outer edge; 113. Inner bend corner; 114. Upper extension; 12. Second edge; 121. Second outer edge; 122. Lower bend corner; 13. Third edge; 14. Fourth edge; 15. Mounting hole;

[0050] 2. Supporting mechanism; 21. Supporting platform;

[0051] 3. Mold; 31. Mold repositioning component; 32. Through hole;

[0052] 4. Heating and pressing mechanism; 41. Flipping part; 411. Support frame; 412. Flipping drive; 413. Flipping plate; 4131. First locking hole block; 4132. First locking hole; 4133. Second locking hole block; 4134. Second locking hole; 414. First locking assembly; 4141. First locking drive; 4142. First locking mounting plate; 4143. First locking block; 415. Second locking assembly; 4151. Second locking drive; 4152. Second locking block; 42. Heating part; 421. Heating drive; 422. Heating mounting plate; 423. Heating tube; 424. Protective enclosure; 425. Pressing block; 43. Pressing part; 44. Clamping part;

[0053] 5. Edge binding mechanism; 51. First edge binding section; 511. First edge binding assembly; 5111. First horizontal push block; 512. Second edge binding assembly; 5121. Second horizontal push block; 5122. Second hook-shaped pressing block; 513. Third edge binding assembly; 5131. Third horizontal push block; 5132. Third hook-shaped pressing block; 514. Fourth edge binding assembly; 5141. Fourth vertical push block; 5142. Fourth hook-shaped pressing block; 515. Fifth edge binding assembly; 5151. Fifth vertical push block; 52. Second edge binding section; 521. Sixth edge binding assembly; 5211. Sixth horizontal push block; 5212. Sixth hook-shaped pressing block; 522. Seventh edge binding assembly; 5221. Seventh horizontal push block; 5222. Seventh hook-shaped oblique pressing block;

[0054] 6. Drilling tool. Detailed Implementation

[0055] The present invention will be described in detail below with reference to specific embodiments.

[0056] In this invention, unless otherwise explicitly specified and limited, terms such as "set in," "connected," and "linked" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a direct connection or a connection through one or more intermediate media. Those skilled in the art can understand the specific meaning of the above terms in this invention based on the specific circumstances. The directional terms appearing in this invention are for the purpose of better describing the characteristics of the features and the relationships between them. It should be understood that when the orientation of this invention changes, the orientation of the characteristics of the features and the relationships between them also changes accordingly. Therefore, directional terms do not constitute an absolute spatial limitation on the characteristics of the features and the relationships between them, but only a relative limitation.

[0057] This invention provides a flip-type automotive interior trim edging device, such as... Figures 1 to 20 As shown, this device is used to edge-wrap the semi-finished interior trim. The semi-finished interior trim includes an interior trim frame 1 and an interior trim surface pasted onto the interior trim frame 1. The edge of the interior trim frame 1 includes a first edge 11, a second edge 12, a third edge 13, and a fourth edge 14 connected in sequence. The third edge 13 and the fourth edge 14 are both provided with mounting holes 15. The flip-type automotive interior trim-wrapping device includes a support mechanism 2 and trimming devices disposed on the support mechanism 2. Specifically, two sets of trimming devices are provided and symmetrically disposed on the support mechanism 2. The two trimming devices respectively trim the left and right semi-finished interior trims. Each trimming device includes a mold 3, a heating and pressing mechanism 4, a trimming mechanism 5, and a punching knife 6. The support mechanism 2 is provided with a support platform 21. Specifically, the support mechanism 2 is prior art, and its structure and working principle are not described in this application.

[0058] The mold 3 is mounted on the support platform 21 in a height-adjustable manner with the help of the mold 31. The mold 3 is used to support the interior semi-finished product. Specifically, the shape of the mold 3 is similar to that of the interior frame 1.

[0059] The heating and pressing mechanism 4 includes a flipping part 41, a heating part 42, a pressing part 43, and a clamping part 44. The flipping part 41 is disposed on the support platform 21 and includes a flipping plate 413 that can be flipped down and up. The heating part 42, the pressing part 43, and the clamping part 44 are all mounted on the flipping plate 413. The heating part 42 is movably disposed on the flipping plate 413 and is used to heat the interior surface of the mold 3 located at the first edge 11 and the second edge 12 of the interior frame 1. The pressing part 43 is movably disposed on the flipping plate 413 and is used to press the interior semi-finished product onto the mold 3 and push the interior semi-finished product down to the edge-wrapping position. The clamping part 44 is disposed on the pressing part 43 and is used to clamp or release the edge-wrapped interior semi-finished product.

[0060] The edge-binding mechanism 5 is disposed on the support platform 21 and located around the mold 3. The edge-binding mechanism 5 includes a first edge-binding part 51 and a second edge-binding part 52. The first edge-binding part 51 is used to bind the first edge 11, and the second edge-binding part 52 is used to bind the second edge 12.

[0061] Multiple punches 6 are provided, and all punches 6 are fixed to the support platform 21 and located below the mold 3. The mold 3 is provided with through holes 32 corresponding to the mounting holes 15. The punches 6 can pass through the through holes 32. When the clamping part 43 descends and pushes the interior semi-finished product and the mold 3 together, that is, when the clamping part 43 pushes the mold 3 down to the edge position, the multiple punches 6 pass through the through holes 32 and are higher than the surface of the interior frame 1 to punch holes in the interior surface at the mounting holes 15. When the clamping part 43 rises, the mold 3 is lifted by the mold reset part 31 to reset.

[0062] It should be noted that the initial state of the heating and pressing mechanism 4 is the upward flipped state, and the initial state of the mold 3 is higher than the edge binding position and the punching knife 6 is lower than the surface of the mold 3, so as to facilitate the placement of the interior semi-finished product.

[0063] Based on the above structural setup, when edge-wrapping the interior semi-finished product, the worker places the interior semi-finished product on the mold 3. The flipping part 41 flips down the heating part 42, the pressing part 43, and the clamping part 44, so that the pressing part 43 is above the mold 3. Then, the heating part 42 descends to heat the interior surface on the mold 3 located at the first edge 11 and the second edge 12 of the interior frame 1, and then resets. Then, the pressing part 43 descends to press the interior semi-finished product onto the mold 3. After that, the pressing part 43 pushes the mold 3 down to the edge-wrapping position. During the process of the pressing part 43 and the mold 3 descending together (during this process, the interior semi-finished product is always pressed by the pressing part 43 and the mold 3), (3. Clamping), the punch 6 passes through the through hole 32 and is higher than the surface of the interior frame 1 to punch holes in the interior skin of the third edge 13 and the fourth edge 14 of the interior frame 1. Then, the edge-wrapping mechanism 5 wraps the edges of the interior frame 1. After the edge-wrapping is completed, the clamping part 44 clamps the edge-wrapped interior semi-finished product, the pressing part 43 rises, and the mold 3 automatically rises and resets with the help of the mold 31. The flipping part 41 flips the heating part 42, the pressing part 43, the clamping part 44 and the interior semi-finished product together. The clamping part 44 releases the edge-wrapped interior semi-finished product, and the operator takes away the edge-wrapped interior semi-finished product, thus completing the edge-wrapping work of the interior semi-finished product. With the above settings, this flipping automotive interior edge-wrapping equipment not only has a high degree of automation, but also improves edge-wrapping efficiency and product quality stability, and the edge-wrapping effect is better.

[0064] It should be noted that when the clamping part 43 descends, the mold resetting member 31 maintains an upward resetting force on the mold 3. Simultaneously, the thrust of the clamping part 43 during descent is greater than the upward resetting force of the mold resetting member 31, allowing the mold 3 to be pushed downwards. Because the mold resetting member 31 maintains an upward resetting force on the mold 3, the interior trim semi-finished product is constantly clamped between the clamping part 43 and the mold 3 when the clamping part 43 pushes downwards, ensuring that the interior trim semi-finished product remains tightly attached to the mold 3 without displacement. Therefore, the accuracy of the drilling position can be ensured when the drilling knife 6 is drilling. Moreover, in this embodiment, the drilling knife 6 is fixed while the mold 3 moves. The relative displacement required for drilling is satisfied by the stroke of the mold 3 moving downwards to the edge position. Therefore, the drilling knife 6 does not need to be connected to a lifting power source, simplifying the structure of the drilling component, simplifying the control steps, and shortening the operation time.

[0065] In this embodiment, the first edge 11 includes an outer extension segment 111, a first outer edge segment 112, an inner bend corner segment 113, and an upper extension segment 114 connected in sequence. The second edge 12 includes a second outer edge segment 121 and a lower bend corner segment 122 connected in sequence. The first edge-binding portion 51 includes a first edge-binding assembly 511, a second edge-binding assembly 512, a third edge-binding assembly 513, a fourth edge-binding assembly 514, and a fifth edge-binding assembly 515. The first edge-binding assembly 511 is used to bind the outer extension segment 111. The second edge-binding component 512 is used to edge the first outer edge segment 112, the third edge-binding component 513 is used to edge the inner bend corner segment 113, and the fourth edge-binding component 514 and the fifth edge-binding component 515 are used to edge the upper extension segment 114; the second edge-binding part 52 includes a plurality of sixth edge-binding components 521 and a seventh edge-binding component 522, the plurality of sixth edge-binding components 521 are used to edge the second outer edge segment 121, and the seventh edge-binding component 522 is used to edge the lower bend corner segment 122.

[0066] In this embodiment, the outer extension 111 has a straight and flat structure and includes an upper surface. The first edge-wrapping component 511 includes a first horizontal push block 5111 and a first flat push drive member. When wrapping the edge, the first flat push drive member drives the first horizontal push block 5111 to move inward, and the first horizontal push block 5111 pushes the interior leather inward to the upper surface of the outer extension 111.

[0067] The first outer edge segment 112 has a bent structure and includes an upward edge and an inner surface that bends downward from the upward edge. The second edge-wrapping assembly 512 includes a second horizontal push block 5121, a second flat push drive, a second hook-shaped pressing block 5122, and a second lifting drive. During edge wrapping, the second flat push drive first drives the second horizontal push block 5121, the second hook-shaped pressing block 5122, and the second lifting drive to move inward. The second horizontal push block 5121 pushes the interior trim inward to the upward edge of the first outer edge segment 112, and the second hook-shaped pressing block 5122 is located above the first outer edge segment 112. Then, the second lifting drive drives the second hook-shaped pressing block 5122 to descend, and the second hook-shaped pressing block 5122 presses the interior trim downward to the inner surface of the first outer edge segment 112.

[0068] The inner bend corner section 113 is a bent structure and includes a flat L-shaped edge and an L-shaped inner surface that bends downward from the flat L-shaped edge. The third edge-wrapping assembly 513 includes a third horizontal push block 5131, a third flat push drive, a third hook-shaped pressing block 5132, and a third lifting drive. The ends of the third horizontal push block 5131 and the third hook-shaped pressing block 5132 are both L-shaped in the vertical projection direction. When edging, the third flat push drive first drives the third horizontal push block 5131, the third hook-shaped pressing block 5132, and the third lifting drive to move inward. The third horizontal push block 5131 pushes the interior trim inward to the flat L-shaped edge of the inner bend corner section 113, and the third hook-shaped pressing block 5132 is located above the inner bend corner section 113. Then, the third lifting drive drives the third hook-shaped pressing block 5132 to descend, and the third hook-shaped pressing block 5132 presses the interior trim downward to the L-shaped inner surface of the inner bend corner section 113.

[0069] The upper extension 114 is a bent structure and includes an outer surface, an inner surface, and a side edge located between the outer surface and the inner surface. The fourth edge-wrapping assembly 514 includes a fourth vertical push block 5141, a fourth horizontal push drive, a fourth hook-shaped pressing block 5142, and a fourth lifting drive. The fifth edge-wrapping assembly 515 includes a fifth vertical push block 5151 and a fifth horizontal push drive. During edge wrapping, the fifth horizontal push drive first drives the fifth vertical push block 5151 to move laterally, and the fifth vertical push block 5151 pushes the interior trim skin laterally to... The outer surface of the upper extension 114 is then moved inward by the fourth horizontal push drive member, which in turn drives the fourth vertical push block 5141, the fourth hook-shaped pressing block 5142, and the fourth lifting drive member. The fourth vertical push block 5141 pushes the interior trim inward to the side edge of the upper extension 114, and the fourth hook-shaped pressing block 5142 is located above the upper extension 114. Then the fourth lifting drive member drives the fourth hook-shaped pressing block 5142 to descend, and the fourth hook-shaped pressing block 5142 presses the interior trim down to the inner surface of the upper extension 114.

[0070] Through the combined action of the above-mentioned edge-wrapping components, the first edge-wrapping part 51 can achieve edge wrapping of the first edge 11 of the interior frame 1. The edge-wrapping components will not interfere with each other or hinder each other's movement, and the edge wrapping effect of each part of the first edge 11 is good.

[0071] In this embodiment, the second outer edge segment 121 is a bent structure and includes an upper edge and an inner surface bent downward from the upper edge. Each sixth edge-wrapping component 521 includes a sixth horizontal push block 5211, a sixth flat push drive member, a sixth hook-shaped pressing block 5212, and a sixth lifting drive member. During edge wrapping, the sixth flat push drive members of the plurality of sixth edge-wrapping components 521 drive the sixth horizontal push block 5211, the sixth hook-shaped pressing block 5212, and the sixth lifting drive member to move inward. The plurality of sixth horizontal push blocks 5211 push the interior trim skin inward to the upper edge of the second outer edge segment 121, and the plurality of sixth hook-shaped pressing blocks 5212 are located above the second outer edge segment 121. Then, the plurality of second lifting drive members drive the sixth hook-shaped pressing block 5212 to descend, and the sixth hook-shaped pressing block 5212 presses the interior trim skin downward to the inner surface of the second outer edge segment 121.

[0072] The lower bend corner section 122 has a straight and flat structure and includes an upright L-shaped edge and an L-shaped inner surface extending horizontally and downward from the upright L-shaped edge. The seventh edge-wrapping assembly 522 includes a seventh horizontal push block 5221, a seventh flat push drive, a seventh hook-shaped inclined pressure block 5222, and a seventh lifting drive. During edge wrapping, the seventh flat push drive first drives the seventh horizontal push block 5221, the seventh hook-shaped inclined pressure block 5222, and the seventh lifting drive to move inward. The seventh horizontal push block 5221 pushes the interior trim skin inward to the upright L-shaped edge of the lower bend corner section 122, and the seventh hook-shaped inclined pressure block 5222 is located above the upright L-shaped edge. Then, the seventh lifting drive drives the seventh hook-shaped inclined pressure block 5222 to descend, and the seventh hook-shaped inclined pressure block 5222 presses the interior trim skin down to the L-shaped inner surface.

[0073] Through the combined action of the above-mentioned edge-wrapping components, the second edge-wrapping part 52 can achieve the edge-wrapping of the second edge 12 of the interior frame 1, and the edge-wrapping effect of each part of the second edge 12 is good.

[0074] In this embodiment, as Figure 20 As shown, the heating unit 42 includes a heating drive 421, a heating mounting plate 422, and a heating tube 423. The heating mounting plate 422 can be driven by the heating drive 421 to rise and fall relative to the flip plate 413. The heating tube 423 is disposed on the heating mounting plate 422, and a protective enclosure 424 is provided on the side of the heating tube 423. The protective enclosure 424 can protect the heating tube 423 and guide the heat. Multiple pressing blocks 425 are provided below the heating tube 423. When the interior semi-finished product is attached to the mold 3, the interior surface of the first edge 11 and the second edge 12 of the interior frame 1 tends to curl upward. When the heating unit 42 descends to heat the interior surface located at the first edge 11 and the second edge 12 of the interior frame 1, the pressing blocks 425 can press the interior surface downward to an unfolded state, thereby improving the heating effect of the interior surface.

[0075] In this embodiment, as Figures 16 to 19 As shown, the flipping part 41 also includes a support frame 411, a flipping drive member 412, a first locking component 414, and a second locking component 415. The support frame 411 is disposed on the support platform 21. The flipping drive member 412 is disposed on the support frame 411 and can drive the flipping plate 413 to rotate on the support frame 411. The first locking component 414 and the second locking component 415 are both disposed on the support frame 411. When the flipping drive member 412 drives the flipping plate 413 to flip down, the first locking component 414 locks the flipping plate 413. When the flipping drive member 412 drives the flipping plate 413 to flip up, the second locking component 415 can lock the flipping plate 413.

[0076] In this embodiment, at least two sets of first locking components 414 are provided. The first locking components 414 include a first locking drive 4141, a first locking mounting plate 4142, and a first locking block 4143. The support frame 411 is provided with a crossbeam. The first locking mounting plate 4142 is provided on the crossbeam. The first locking drive 4141 is provided on the first locking mounting plate 4142. A first locking hole block 4131 is provided on the side of the flip plate 413 parallel to the crossbeam. When the flip drive 412 drives the flip plate 413 to flip down, the first locking hole block 4131 can be supported by the first locking mounting plate 4142, and the first locking block 4143 can be driven by the first locking drive 4141 to extend into the first locking hole 4132 of the first locking hole block 4131.

[0077] The first locking assembly 414 locks the flip plate 413, improving the stability of the pressing part 43 when pushing the mold 3.

[0078] In this embodiment, the second locking assembly 415 includes a second locking drive 4151 and a second locking block 4152. The support frame 411 is provided with a hinge seat for hinged with the flip plate 413. The second locking drive 4151 is disposed on the hinge seat. The side of the flip plate 413 opposite to the hinge seat is provided with a second locking hole block 4133. When the flip drive 412 drives the flip plate 413 to flip up, the second locking block 4152 can be driven by the second locking drive 4151 to extend into the second locking hole 4134 of the second locking hole block 4133.

[0079] An edge-wrapping method based on the above-mentioned flip-type automotive interior edge-wrapping equipment includes the following steps:

[0080] S1. The staff places the semi-finished interior trim on mold 3;

[0081] S2, the flipping part 41 flips the flipping plate 413 downwards;

[0082] S3, the heating part 42 descends to heat the interior surface located at the first edge 11 and the second edge 12 of the interior frame 1, and the heating part 42 returns to its original position after heating;

[0083] S4. The pressing part 43 descends to press the interior semi-finished product onto the mold 3, while the mold 3 is pushed down to the edge position. At the same time, the punching knife 6 punches holes in the interior surface.

[0084] S5, the fifth edge-binding component 515 edge-binds the upper extension segment 114; then the fourth edge-binding component 514 edge-binds the upper extension segment 114, while the first edge-binding component 511 edge-binds the outer extension segment 111, and the seventh edge-binding component 522 edge-binds the lower bend corner segment 122; after edge-binding, the fourth edge-binding component 514, the first edge-binding component 511 and the seventh edge-binding component 522 reset simultaneously, and then the fifth edge-binding component 515 resets;

[0085] S6. The third edge-wrapping component 513 wraps the inner bend corner segment 113; after wrapping, the third edge-wrapping component 513 is reset.

[0086] S7. The second edge-wrapping component 512 wraps the first outer edge segment 112, while multiple sixth edge-wrapping components 521 wrap the second outer edge segment 121. After wrapping, the second edge-wrapping component 512 and multiple sixth edge-wrapping components 521 are reset simultaneously.

[0087] S8, clamping part 44 clamps the pre-finished interior trim;

[0088] S9. The pressing part 43 rises and resets, and the mold 3 rises and resets with the help of the mold reset part 31.

[0089] S10, the flipping part 41 flips the flipping plate 413 upward;

[0090] S11, Clamping part 44 releases the pre-wrapped interior semi-finished product;

[0091] S12. Staff members remove the pre-finished interior trim that has already been edged.

[0092] The above actions are then repeated continuously to complete the edge-wrapping work of the semi-finished interior trim.

[0093] Based on the hardware configuration of this embodiment and the steps set in S5 to S7 above, this embodiment can achieve perfect edging of the interior semi-finished product in an extremely limited space. After edging, each edge of the interior surface remains tightly fitted with the interior frame 1, and there are no bulges or wrinkles.

[0094] The above-described edge-wrapping method is simple to operate, highly efficient, and produces good results when used to wrap the edges of semi-finished interior trim.

[0095] In summary, this flip-type automotive interior trim wrapping equipment and its wrapping method can solve the problems of low efficiency and poor quality stability caused by manual operation in the existing automotive trim panel surface wrapping process.

[0096] Where there is no conflict, the above embodiments and features can be combined with each other.

[0097] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention, and are not intended to limit the scope of protection of the present invention. Although the present invention has been described in detail with reference to preferred embodiments, those skilled in the art should understand that modifications or equivalent substitutions can be made to the technical solutions of the present invention without departing from the essence and scope of the technical solutions of the present invention.

Claims

1. A flip-type automotive interior trim edge-wrapping device, used for edge-wrapping the edges of a semi-finished interior trim product, the semi-finished interior trim product comprising an interior trim frame (1) and an interior trim skin pasted onto the interior trim frame (1); the edges of the interior trim frame (1) comprise a first edge (11), a second edge (12), a third edge (13), and a fourth edge (14) connected in sequence, the third edge (13) and the fourth edge (14) each being provided with mounting holes (15), characterized in that: It includes a support mechanism (2) and an edge-binding device disposed on the support mechanism (2). The edge-binding device includes a mold (3), a heating and pressing mechanism (4), an edge-binding mechanism (5), and a punching knife (6). The support mechanism (2) is provided with a support platform (21). The mold (3) is mounted on the support platform (21) in a height-adjustable manner with the help of the mold reset part (31). The mold (3) is used to support the interior semi-finished product. The heating and pressing mechanism (4) includes a flipping part (41), a heating part (42), a pressing part (43), and a clamping part (44). The flipping part (41) is disposed on the support platform (21) and includes a flipping plate (413) that can be flipped down and up. The heating part (42), the pressing part (43), and the clamping part (44) are all mounted on the flipping plate (413). The heating part (42) is movably disposed on the flipping plate (413) and is used to heat the interior surface of the mold (3) located at the first edge (11) and the second edge (12) of the interior frame (1). The pressing part (43) is movably disposed on the flipping plate (413) and is used to press the interior semi-finished product onto the mold (3) and push the interior semi-finished product down to the edge-wrapping position. The clamping part (44) is disposed on the pressing part (43) and is used to clamp or release the edge-wrapped interior semi-finished product. The edge-binding mechanism (5) is disposed on the support platform (21) and located around the mold (3). The edge-binding mechanism (5) includes a first edge-binding part (51) for binding the first edge (11) and a second edge-binding part (52) for binding the second edge (12). Multiple punches (6) are provided and fixed on the support platform (21) and located below the mold (3). The mold (3) is provided with through holes (32) corresponding to the mounting holes (15). The punches (6) can pass through the through holes (32). During the process of the pressing part (43) pushing the interior semi-finished product down to the edge position, the punches (6) punch holes in the interior surface after passing through the through holes (32). When the pressing part (43) descends, the mold reset component (31) maintains an upward reset force on the mold (3). When the pressing part (43) rises, the mold (3) is lifted by the mold reset component (31) to reset.

2. The flip-type automotive interior trim edging device according to claim 1, characterized in that: The first edge (11) includes an extension segment (111), a first outer edge segment (112), an inner bend corner segment (113), and an upper extension segment (114) connected in sequence; the second edge (12) includes a second outer edge segment (121) and a lower bend corner segment (122) connected in sequence; the first edge-binding portion (51) includes a first edge-binding assembly (511), a second edge-binding assembly (512), a third edge-binding assembly (513), a fourth edge-binding assembly (514), and a fifth edge-binding assembly (515), the first edge-binding assembly (511) being used to edge the outer extension segment (111), the second edge-binding assembly (512), the third edge-binding assembly (513), the fourth edge-binding assembly (514), and the ... second edge-binding assembly (515), the third edge-binding assembly (511), the fourth edge-binding assembly (515), the fifth edge-binding assembly (515), the fifth edge-binding assembly (5 The edge-binding assembly (512) is used to bind the first outer edge segment (112), the third edge-binding assembly (513) is used to bind the inner bend corner segment (113), and the fourth edge-binding assembly (514) and the fifth edge-binding assembly (515) are used to bind the upper extension segment (114); the second edge-binding part (52) includes a plurality of sixth edge-binding assemblies (521) and a seventh edge-binding assembly (522), the plurality of sixth edge-binding assemblies (521) are used to bind the second outer edge segment (121), and the seventh edge-binding assembly (522) is used to bind the lower bend corner segment (122).

3. The flip-type automotive interior trim edging device according to claim 2, characterized in that: The outer extension (111) has a straight and flat structure and includes an upper surface. The first edge-wrapping assembly (511) includes a first horizontal push block (5111) and a first flat push drive member. When wrapping the edge, the first flat push drive member drives the first horizontal push block (5111) to move inward, and the first horizontal push block (5111) pushes the interior leather inward to the upper surface of the outer extension (111). The first outer edge segment (112) is a bent structure and includes an upper edge and an inner surface bent downward from the upper edge. The second edge-wrapping assembly (512) includes a second horizontal push block (5121), a second flat push drive, a second hook-shaped pressing block (5122), and a second lifting drive. When wrapping the edge, the second flat push drive first drives the second horizontal push block (5121), the second hook-shaped pressing block (5122), and the second lifting drive to move inward. The second horizontal push block (5121) pushes the interior trim inward to the upper edge of the first outer edge segment (112), and the second hook-shaped pressing block (5122) is located above the first outer edge segment (112). Then, the second lifting drive drives the second hook-shaped pressing block (5122) to descend, and the second hook-shaped pressing block (5122) presses the interior trim downward to the inner surface of the first outer edge segment (112). The inner bend corner segment (113) is a bent structure and includes a flat L-shaped edge and an L-shaped inner surface that bends downward from the flat L-shaped edge. The third edge-binding assembly (513) includes a third horizontal push block (5131), a third horizontal push drive, a third hook-shaped pressure block (5132), and a third lifting drive. The ends of the third horizontal push block (5131) and the third hook-shaped pressure block (5132) are both L-shaped in the vertical projection direction. During edge binding, the third horizontal push drive first drives the third horizontal push block (5131) (5132) (5133). 131) The third hook-shaped pressing block (5132) and the third lifting drive move inward, the third horizontal push block (5131) pushes the interior surface inward to the flat L-shaped edge of the inner bend corner section (113), and the third hook-shaped pressing block (5132) is located above the inner bend corner section (113). Then the third lifting drive drives the third hook-shaped pressing block (5132) to descend, and the third hook-shaped pressing block (5132) presses the interior surface downward to the L-shaped inner surface of the inner bend corner section (113). The upper extension (114) is a bent structure and includes an outer surface, an inner surface, and a side edge located between the outer surface and the inner surface. The fourth edge-wrapping assembly (514) includes a fourth vertical push block (5141), a fourth horizontal push drive, a fourth hook-shaped pressing block (5142), and a fourth lifting drive. The fifth edge-wrapping assembly (515) includes a fifth vertical push block (5151) and a fifth horizontal push drive. During edge wrapping, the fifth horizontal push drive first drives the fifth vertical push block (5151) to move laterally, and the fifth vertical push block (5151) pushes the interior leather to the side to the upper extension. The fourth horizontal push drive then drives the fourth vertical push block (5141), the fourth hook-shaped pressing block (5142) and the fourth lifting drive to move inward. The fourth vertical push block (5141) pushes the interior trim inward to the side edge of the upper extension (114), and the fourth hook-shaped pressing block (5142) is located above the upper extension (114). Then the fourth lifting drive then drives the fourth hook-shaped pressing block (5142) to descend. The fourth hook-shaped pressing block (5142) presses the interior trim down to the inner surface of the upper extension (114).

4. The flip-type automotive interior trim edging device according to claim 3, characterized in that: The second outer edge segment (121) is a bent structure and includes an upper edge and an inner surface bent downward from the upper edge. Each sixth edge-sealing assembly (521) includes a sixth horizontal push block (5211), a sixth flat push drive, a sixth hook-shaped pressing block (5212), and a sixth lifting drive. During edge sealing, the sixth flat push drive of the plurality of sixth edge-sealing assemblies (521) drives the sixth horizontal push block (5211), the sixth hook-shaped pressing block (5212), and the sixth lifting drive to move inward. The plurality of sixth horizontal push blocks (5211) push the interior trim inward to the upper edge of the second outer edge segment (121), and the plurality of sixth hook-shaped pressing blocks (5212) are located above the second outer edge segment (121). Then, the plurality of second lifting drive drives the sixth hook-shaped pressing block (5212) to descend, and the sixth hook-shaped pressing block (5212) presses the interior trim downward to the inner surface of the second outer edge segment (121). The lower bend corner section (122) is a straight and flat structure and includes an upright L-shaped edge and an L-shaped inner surface extending horizontally and downward from the upright L-shaped edge. The seventh edge-wrapping assembly (522) includes a seventh horizontal push block (5221), a seventh flat push drive, a seventh hook-shaped inclined pressure block (5222), and a seventh lifting drive. When edging, the seventh flat push drive first drives the seventh horizontal push block (5221), the seventh hook-shaped inclined pressure block (5222), and the seventh lifting drive to move inward. The seventh horizontal push block (5221) pushes the interior skin inward to the upright L-shaped edge of the lower bend corner section (122), and the seventh hook-shaped inclined pressure block (5222) is located above the upright L-shaped edge. Then, the seventh lifting drive drives the seventh hook-shaped inclined pressure block (5222) to descend, and the seventh hook-shaped inclined pressure block (5222) presses the interior skin down to the L-shaped inner surface.

5. The flip-type automotive interior trim edging device according to claim 1, characterized in that: The heating unit (42) includes a heating drive (421), a heating mounting plate (422), and a heating tube (423). The heating mounting plate (422) can be driven by the heating drive (421) to rise and fall relative to the flip plate (413). The heating tube (423) is disposed on the heating mounting plate (422). A protective enclosure (424) is provided on the side of the heating tube (423). Multiple clamping blocks (425) are provided below the heating tube (423).

6. The flip-type automotive interior trim edging device according to claim 1, characterized in that: The flipping part (41) also includes a support frame (411), a flipping drive (412), a first locking assembly (414), and a second locking assembly (415). The support frame (411) is disposed on the support platform (21). The flipping drive (412) is disposed on the support frame (411) and can drive the flipping plate (413) to rotate on the support frame (411). The first locking assembly (414) and the second locking assembly (415) are both disposed on the support frame (411). When the flipping drive (412) drives the flipping plate (413) to flip down, the first locking assembly (414) locks the flipping plate (413). When the flipping drive (412) drives the flipping plate (413) to flip up, the second locking assembly (415) can lock the flipping plate (413).

7. The flip-type automotive interior trim edging device according to claim 6, characterized in that: The first locking assembly (414) is provided with at least two sets. The first locking assembly (414) includes a first locking drive (4141), a first locking mounting plate (4142), and a first locking block (4143). The support frame (411) is provided with a crossbeam. The first locking mounting plate (4142) is provided on the crossbeam. The first locking drive (4141) is provided on the first locking mounting plate (4142). The flip plate (413) is provided with a first locking hole block (4131) on its side parallel to the crossbeam. When the flip drive (412) drives the flip plate (413) to flip down, the first locking hole block (4131) can be supported by the first locking mounting plate (4142), and the first locking block (4143) can be driven by the first locking drive (4141) to extend into the first locking hole (4132) of the first locking hole block (4131).

8. The flip-type automotive interior trim edging device according to claim 7, characterized in that: The second locking assembly (415) includes a second locking drive (4151) and a second locking block (4152). The support frame (411) is provided with a hinge seat for hinged with the flip plate (413). The second locking drive (4151) is provided on the hinge seat. The side of the flip plate (413) opposite to the hinge seat is provided with a second locking hole block (4133). When the flip drive (412) drives the flip plate (413) to flip up, the second locking block (4152) can be driven by the second locking drive (4151) to extend into the second locking hole (4134) of the second locking hole block (4133).

9. A binding method based on the flip-type automotive interior trim binding device according to any one of claims 2 to 4, characterized in that, Includes the following steps: S1. The staff placed the interior semi-finished product on the mold (3); S2, the flipping part (41) flips the flipping plate (413) down; S3, The heating part (42) descends to heat the interior skin located at the first edge (11) and the second edge (12) of the interior frame (1), and the heating part (42) returns to its original position after heating; S4. The pressing part (43) descends to press the interior semi-finished product onto the mold (3), and at the same time pushes the mold (3) down to the edge position. Meanwhile, the punch (6) punches holes in the interior surface. S5. The fifth edge-wrapping component (515) wraps the upper extension segment (114); then the fourth edge-wrapping component (514) wraps the upper extension segment (114), while the first edge-wrapping component (511) wraps the outer extension segment (111), and the seventh edge-wrapping component (522) wraps the lower bend corner segment (122); after wrapping, the fourth edge-wrapping component (514), the first edge-wrapping component (511) and the seventh edge-wrapping component (522) are reset simultaneously, and then the fifth edge-wrapping component (515) is reset. S6. The third edge-wrapping component (513) wraps the inner bend corner segment (113); after wrapping, the third edge-wrapping component (513) is reset. S7. The second edge-binding component (512) binds the first outer edge segment (112), and at the same time, multiple sixth edge-binding components (521) bind the second outer edge segment (121); after binding, the second edge-binding component (512) and multiple sixth edge-binding components (521) are reset simultaneously. S8, Clamping part (44) clamps the pre-wrapped interior semi-finished product; S9. The pressing part (43) rises and resets, and the mold (3) rises and resets with the help of the mold reset part (31); S10, the flipping part (41) flips the flipping plate (413) upward; S11, The clamping part (44) releases the pre-wrapped interior semi-finished product; S12. Staff members remove the pre-finished interior trim that has already been edged.