Hot riveting processing equipment for automotive upholstery

Abstract

The invention relates to the technical field of hot riveting, in particular to automotive upholstery hot riveting machining equipment which comprises a supporting die and a pressing unit for pressing an automotive upholstery in the supporting die. The device further comprises a hot riveting head, a driving unit and a linear driver. The hot riveting head is vertically arranged above the supporting die; the driving unit is arranged on the upper portion of the hot riveting head and used for driving the hot riveting head to rotate along the axis in the vertical direction. The linear driver is arranged on the upper portion of the driving unit and used for driving the hot riveting head and the driving unit to ascend and descend synchronously. The condition that hot riveting column materials remain on the hot riveting head is avoided, and the forming quality of the hot riveting column is guaranteed.

Description

Technical Field

[0001] This invention relates to the field of hot riveting technology, specifically to a hot riveting processing equipment for automotive interior parts. Background Technology

[0002] In existing hot riveting technology, manual inspection and feeding are mainly used, and then hot riveting is performed on the hot riveting column by hot riveting equipment. However, manual feeding is prone to missing material, resulting in a high defect rate.

[0003] Chinese Patent Publication No. CN215144392U discloses a hot riveting device for automotive handles, including a frame, a platform mounted on the frame, a turntable mounted on the platform, and a rotating device positioned below the turntable and controlling its rotation. The platform has several workstations, including a first workstation and a second workstation, with the second workstation following the first workstation. A product placement and inspection mechanism is mounted above the first workstation and fixedly installed on the frame. A hot riveting mechanism is mounted above the second workstation and fixedly installed on the frame. A product is mounted on a fixture, which is movably mounted on the turntable. When the product is placed at the first workstation and the inspection mechanism detects that the product placement is qualified, the turntable rotates to send the product from the first workstation to the second workstation.

[0004] The above solution achieves automatic feeding of hot riveting posts, avoiding material leakage. However, existing hot riveting posts are mainly made of metal or plastic. After hot riveting by the hot riveting machine, if the machine is directly separated from the riveted post, the end of the post is prone to wire-drawing deformation, resulting in some material remaining at the end of the hot riveting head. This is particularly noticeable with plastic hot riveting posts. Furthermore, many existing hot riveting heads have self-heating functions. If some plastic material remains at the end of the head, the plastic will remain under high heat for an extended period, causing the remaining plastic to char. This increases the difficulty of later maintenance of the head and hinders normal hot riveting operation. Summary of the Invention

[0005] To address the aforementioned problems, a hot riveting processing device for automotive interior parts is provided. This device utilizes a drive unit to drive the hot riveting head to rotate along its vertical axis after hot riveting, an air blowing pipe to accelerate the cooling and solidification of the upper end of the hot riveting post, and a pressing unit to continuously press the automotive interior parts as the hot riveting head rises. This effectively solves the problem of wire pulling on the hot riveting post in traditional hot riveting processes. The rotation of the hot riveting head causes relative sliding between the upper end of the hot riveting post and the hot riveting head; the air blowing pipe accelerates the solidification of the hot riveting post and reduces adhesion; and the pressing unit prevents the interior parts from rising with the hot riveting head. Through the synergistic effect of these three elements, both the fine wire pulling of metal hot riveting posts and the severe material adhesion of plastic hot riveting posts are significantly reduced.

[0006] To address the problems of existing technologies, the present invention provides a hot riveting processing equipment for automotive interior parts, including a support mold and a pressing unit for pressing automotive interior parts into the support mold; It also includes a hot riveting head, a drive unit, and a linear driver; The hot riveting head is vertically positioned above the support mold; The drive unit is located on the upper part of the hot riveting head, and the drive unit is used to drive the hot riveting head to rotate along the vertical axis; The linear actuator is located on the upper part of the drive unit. The linear actuator is used to drive the hot riveting head and to synchronously raise and lower the drive unit.

[0007] Preferably, the processing equipment also includes an air blowing pipe; The air blowing pipe is located on one side of the hot riveting head, with the air outlet of the air blowing pipe pointing towards the lower end of the hot riveting head.

[0008] Preferably, the drive unit includes a rotary driver, a bracket, and a support ring; The rotary actuator is vertically mounted on the upper part of the hot riveting head, and is used to drive the hot riveting head to rotate. The bracket is located at the lower part of the rotary driver, and the rotary driver is mounted on the bracket; The support ring is fixedly installed at the lower part of the bracket along the extension direction of the hot riveting head. The output shaft of the rotary driver passes through the inside of the support ring, and the lower part of the support ring provides support for the upper part of the hot riveting head.

[0009] Preferably, the drive unit includes a drive shaft and a groove; The drive shaft is vertically fixed on the output end of the rotary actuator, and the horizontal cross-section of the drive shaft is a non-circular structure. The groove is vertically formed on the upper part of the hot riveting head, and the drive shaft extends into the groove and slides into it. The horizontal cross-sectional shape of the groove is the same as that of the drive shaft.

[0010] Preferably, the pressing unit includes a point pressing component and a surface pressing component; The point-pressing components are arranged in a ring and are used to press the outer periphery of automotive interior parts. The surface pressing component is located inside the ring formed by the point pressing component, and the surface pressing component is used to press the middle part of the automotive interior trim.

[0011] Preferably, the point pressing assembly includes a soft rubber head for contacting the edge of the automotive interior trim piece, and the surface pressing assembly includes a pressing plate for contacting the center of the automotive interior trim piece, wherein the size of the soft rubber head is smaller than the size of the pressing plate.

[0012] Preferably, the point-pressing assembly further includes a first telescopic rod, a first telescopic sleeve, and a first spring; The first telescopic rod is vertically fixed at the top of the soft rubber head; The first telescopic sleeve is vertically installed on the upper part of the first telescopic rod, and the upper end of the first telescopic rod extends into the first telescopic sleeve and slides in cooperation with the first telescopic sleeve. The first spring is sleeved around the first telescopic rod, and the two ends of the first spring are fixed to the lower end of the first telescopic rod and the lower end of the first telescopic sleeve, respectively.

[0013] Preferably, the face pressing assembly further includes a second telescopic rod, a second telescopic sleeve, and a second spring; The second telescopic rod is vertically fixed at the top of the pressing plate; The second telescopic sleeve is vertically installed on the upper part of the second telescopic rod, and the upper end of the second telescopic rod extends into the second telescopic sleeve and slides in cooperation with the second telescopic sleeve. The second spring is sleeved around the second telescopic rod, and the two ends of the second spring are fixed to the lower end of the second telescopic rod and the lower end of the second telescopic sleeve, respectively.

[0014] Preferably, a discharge port is provided on the side wall of the support mold, and the lower end face of the discharge port is coplanar with the bottom end face of the support mold.

[0015] Preferably, a blower is provided on the opposite side of the support mold where the discharge port is provided, and the discharge port and the blower are distributed along the length of the support mold.

[0016] The advantages of this invention compared to the prior art are: 1. This invention effectively solves the problem of wire drawing in traditional hot riveting processes by using a drive unit to drive the hot riveting head to rotate along the vertical axis after hot riveting, an air blowing pipe to accelerate the cooling and solidification of the upper end of the hot riveting post, and a pressing unit to continuously press the automotive interior parts as the hot riveting head rises. The rotation of the hot riveting head causes relative sliding between the upper end of the hot riveting post and the hot riveting head, the air blowing pipe accelerates the solidification of the hot riveting post and reduces adhesion, and the pressing unit prevents the interior parts from rising with the hot riveting head. With the synergistic effect of these three elements, both the fine wire drawing of metal hot riveting posts and the serious material hanging phenomenon of plastic hot riveting posts are greatly reduced, avoiding the situation of hot riveting post material residue on the hot riveting head and ensuring the forming quality of the hot riveting post.

[0017] 2. By incorporating a support ring in the drive unit to absorb the reaction force during hot riveting, and employing a sliding fit structure between the non-circular drive shaft and the groove, the axial reaction force generated by the pressure applied by the hot riveting head is entirely borne by the support ring and is no longer transmitted to the output end of the rotary actuator. This design solves the problem of rotary actuators being easily damaged by reaction forces in traditional equipment, significantly reducing the probability of rotary actuator failure, extending its service life, reducing downtime due to equipment maintenance, improving overall equipment utilization, and lowering spare parts replacement costs.

[0018] 3. By dividing the pressing unit into point pressing components and surface pressing components, combined with a telescopic rod, telescopic sleeve, and spring structure, and by setting a discharge port on the side wall of the support mold and correspondingly installing a blower, stable and efficient processing of automotive interior parts is achieved. The point pressing components press the edges of the interior parts, while the surface pressing components press the center. Combined with the elastic pressure of the springs, this prevents the edges of the interior parts from lifting and the hot riveting post from shifting. The discharge port of the support mold and the blower can quickly remove processing debris, preventing debris from affecting the subsequent hot riveting accuracy. This ensures continuous and efficient hot riveting operations in terms of both processing stability and cleanliness, reducing product defects and rework. Attached Figure Description

[0019] Figure 1 This is a three-dimensional schematic diagram of a hot riveting processing equipment for automotive interior parts according to the present invention.

[0020] Figure 2 This is a three-dimensional schematic diagram of a hot riveting processing equipment for automotive interior parts according to the present invention, after the linear actuator has been removed.

[0021] Figure 3 This invention relates to a hot riveting processing equipment for automotive interior parts. Figure 2 A magnified view of a portion of point A in the middle.

[0022] Figure 4 This is a three-dimensional schematic diagram of a hot riveting processing equipment for automotive interior parts according to the present invention, after removing the linear driver and part of the bracket.

[0023] Figure 5 This is a three-dimensional schematic diagram of a hot riveting head equipped with a drive unit in a hot riveting processing equipment for automotive interior parts according to the present invention.

[0024] Figure 6 This is a three-dimensional cross-sectional view of a hot riveting head equipped with a drive unit in a hot riveting processing equipment for automotive interior parts according to the present invention.

[0025] Figure 7 This invention relates to a hot riveting processing equipment for automotive interior parts. Figure 6 A magnified view of a portion of point B in the middle.

[0026] Figure 8 This is an exploded three-dimensional schematic diagram of a hot riveting head equipped with a drive unit in a hot riveting processing equipment for automotive interior parts according to the present invention.

[0027] The following are the labels in the diagram: 1. Support mold; 11. Discharge port; 12. Blower; 2. Pressing unit; 21. Point pressing assembly; 211. Soft rubber head; 212. First telescopic rod; 213. First telescopic sleeve; 214. First spring; 22. Surface pressing assembly; 221. Pressing plate; 222. Second telescopic rod; 223. Second telescopic sleeve; 224. Second spring; 3. Hot riveting head; 4. Drive unit; 41. Rotary driver; 42. Bracket; 43. Support ring; 44. Drive shaft; 45. Groove; 5. Linear driver; 6. Automotive interior parts; 7. Air blowing pipe. Detailed Implementation

[0028] To further understand the features, technical means, and specific objectives and functions achieved by the present invention, the present invention will be described in further detail below with reference to the accompanying drawings and specific embodiments.

[0029] Reference Figure 1 , Figure 2 and Figure 4 A hot riveting processing device for automotive interior parts includes a support mold 1 and a pressing unit 2 for pressing automotive interior parts 6 into the support mold 1; It also includes a hot riveting head 3, a drive unit 4, and a linear driver 5; The hot riveting head 3 is vertically positioned above the support mold 1; The drive unit 4 is located on the upper part of the hot riveting head 3. The drive unit 4 is used to drive the hot riveting head 3 to rotate along the vertical axis. The linear actuator 5 is located on the upper part of the drive unit 4. The linear actuator 5 is used to drive the hot riveting head 3 and the drive unit 4 to move up and down synchronously.

[0030] The core materials of existing hot riveting posts are mainly divided into two categories: metal and plastic. Although they can meet the connection requirements of different products, both exhibit obvious separation defects after the high-temperature and high-pressure operation of the hot riveting machine. For metal hot riveting posts, the hot riveting machine transfers high temperature to the metal post through the hot riveting head 3, softening its end and forming a riveting structure. When the hot riveting head 3 separates directly from the formed metal post, the softened metal has a certain degree of stickiness, and there is no buffering mechanism at the moment of separation, which easily leads to slight stringing deformation at the end of the metal post, and some metal fragments will adhere to the surface of the hot riveting head 3. The defects of plastic hot riveting posts are even more prominent. Plastic easily melts into a viscous state at high temperatures. After the hot riveting head 3 is pressurized, it forms a tight fit with the plastic post. During separation, the viscous plastic is easily stuck to the hot riveting head 3, forming obvious stringing and material hanging phenomena. A large amount of plastic residue will directly adhere to the end of the hot riveting head 3, and even break and embed itself into the grooves of the hot riveting head 3, directly affecting subsequent hot riveting operations.

[0031] Most existing hot riveting machines use a self-heating design with built-in heating tubes for the hot riveting head 3. During operation, the surface temperature of the hot riveting head 3 needs to be maintained within a stable range of 180-300℃ to meet the forming requirements of hot riveting columns made of different materials. When plastic residue adheres to the end of the hot riveting head 3, it will be trapped in a continuous high-temperature environment, triggering a series of chain problems: the residual plastic will gradually carbonize and char at high temperatures, forming hard black char. These char not only block the heat dissipation holes of the hot riveting head 3, causing the local temperature of the hot riveting head 3 to be too high and accelerating the aging of the heating element, but also form an uneven hard layer on the surface of the hot riveting head 3, destroying its original precise forming structure. Cleaning these charred plastic residues requires stopping the machine, and the operator must carefully polish the hot riveting head using special scrapers, sandpaper, and other tools. On the surface of the head 3, it is necessary to avoid scratching the coating of the hot riveting head 3 and ensure that the residue is completely removed. A single maintenance time usually exceeds 1 hour, which significantly reduces the utilization rate of the equipment. At the same time, frequent grinding will shorten the service life of the hot riveting head 3 and increase the cost of spare parts replacement. In addition, residual coke and plastic residue will change the actual heating area and pressure transmission path of the hot riveting head 3, resulting in problems such as uneven temperature and insufficient pressure during subsequent hot riveting column forming, causing product defects such as loose riveting and appearance deformation. In severe cases, rework may be required, affecting the overall production efficiency.

[0032] To avoid the above situation, the existing hot riveting equipment was optimized to prevent material residue from the upper part of the hot riveting post from remaining in the hot riveting head 3 when it separates from the hot riveting post. This also reduces the probability of wire pulling on the upper part of the hot riveting post during separation. The specific structure and working process of this invention are as follows: During hot riveting, the automotive interior part 6 is first placed horizontally in the support mold 1, providing support for the part. Then, the feeding mechanism places the hot riveting post into the automotive interior part 6. Next, the linear actuator 5 drives the pressing unit 2, the driving unit 4, and the hot riveting head 3 to descend together. The pressing unit 2 contacts the automotive interior part 6 before the hot riveting head 3. After the pressing unit 2 presses the automotive interior part 6, the hot riveting head 3 continues to descend. As the hot riveting head 3 approaches the automotive interior part 6, the pressing force of the pressing unit 2 gradually increases. The specific structure of the pressing unit 2 will be described below. When the hot riveting head 3 contacts the hot riveting post placed on the automotive interior part 6, it presses the upper end of the post. The hot riveting head 3 heats the upper end of the post and deforms it under pressure. When the hot riveting head 3 descends to its lowest position under the action of the linear actuator 5, the upper end of the hot riveting post is formed, and the formed upper end is hemispherical. Subsequently, the drive unit 4 drives the hot riveting head 3 to rotate. The hot riveting head 3 rotates along its own axis. When the hot riveting head 3 rotates, its position in the vertical direction does not change, and the hot riveting head 3 stops heating. Therefore, after the hot riveting head 3 rotates, the temperature of the upper end of the hot riveting post gradually decreases, and the upper end of the hot riveting head 3 slides relative to the upper end of the hot riveting post. This reduces the possibility of the upper end of the hot riveting head 3 sticking to the hot riveting post and also avoids the phenomenon of wire pulling at the upper end of the hot riveting post when the hot riveting head 3 completes the hot riveting lifting.

[0033] Reference Figure 3 The processing equipment also includes an air blowing pipe 7; The air blowing pipe 7 is located on one side of the hot riveting head 3, and the air outlet of the air blowing pipe 7 points to the lower end of the hot riveting head 3.

[0034] By setting an air pipe 7 on one side of the hot riveting head 3, the air pipe 7 is activated after the hot riveting head 3 completes the hot riveting of the hot riveting post. At the same time, the hot riveting head 3 rotates under the driving action of the driving unit 4. The air pipe 7 accelerates the heat dissipation of the upper end of the hot riveting post, thereby accelerating the solidification of the upper end of the hot riveting post that has been heated and softened by the hot riveting head 3. As the hot riveting head 3 rotates continuously, the gradually solidified hot riveting head 3 can be separated from the hot riveting post, further reducing the probability of wire pulling or material residue in the hot riveting head 3 when the hot riveting head 3 separates from the upper end of the hot riveting post.

[0035] Reference Figures 5-8 The drive unit 4 includes a rotary driver 41, a bracket 42, and a support ring 43; The rotary driver 41 is vertically mounted on the upper part of the hot riveting head 3, and the rotary driver 41 is used to drive the hot riveting head 3 to rotate. The bracket 42 is disposed at the lower part of the rotary driver 41, and the rotary driver 41 is mounted on the bracket 42; The support ring 43 is fixedly installed at the lower part of the bracket 42 along the extension direction of the hot riveting head 3. The output shaft of the rotary driver 41 passes through the inside of the support ring 43, and the lower part of the support ring 43 provides support for the upper part of the hot riveting head 3.

[0036] The rotary driver 41 is preferably a servo motor, which drives the hot riveting head 3 to rotate. It is worth noting that when the hot riveting head 3 rivets the upper end of the hot riveting post, it is necessary not only to heat the upper end of the hot riveting post but also to apply pressure to it to cause deformation. However, if the support ring 43 is not provided, when the hot riveting head 3 applies pressure to the hot riveting post, the reaction force on the hot riveting head 3 will act entirely on the output end of the rotary driver 41, easily causing damage to the rotary driver 41. Therefore, to avoid this situation, a support ring 43 is provided on the bracket 42 used to mount the rotary driver 41. When the hot riveting head 3 rivets the hot riveting post, the lower part of the support ring 43 supports the upper part of the hot riveting head 3, preventing the reaction force of the hot riveting head 3 from acting entirely on the output end of the rotary driver 41 during riveting, thus extending the service life of the rotary driver 41.

[0037] Reference Figure 7 and Figure 8 The drive unit 4 includes a drive shaft 44 and a groove 45; The drive shaft 44 is vertically fixed on the output end of the rotary driver 41, and the horizontal cross-section of the drive shaft 44 is a non-circular structure. The groove 45 is vertically formed on the upper part of the hot riveting head 3, and the drive shaft 44 extends into the groove 45 and slides into the groove 45. The horizontal cross-sectional shape of the groove 45 is the same as the horizontal cross-sectional shape of the drive shaft 44.

[0038] By setting the horizontal cross-section of the drive shaft 44 to a non-circular structure, and simultaneously allowing the groove 45 to slide in conjunction with the drive shaft 44, with the horizontal cross-sectional shape of the groove 45 being the same as that of the drive shaft 44, the rotary actuator 41 drives the hot riveting head 3 to rotate through the engagement of the drive shaft 44 and the groove 45. Furthermore, due to the sliding engagement between the drive shaft 44 and the groove 45, the reaction force generated when the hot riveting head 3 performs hot riveting cannot be transmitted to the drive shaft 44; instead, it is entirely absorbed by the support ring 43. This ensures that the rotary actuator 41 is completely free from axial reaction force during hot riveting by the hot riveting head 3, further extending the service life of the rotary actuator 41.

[0039] Reference Figure 2 The pressing unit 2 includes a point pressing component 21 and a surface pressing component 22; The point-pressing components 21 are arranged in a ring and are used to press the outer peripheral edge of the automotive interior part 6. The surface pressing component 22 is disposed on the inner side of the ring formed by the point pressing component 21, and the surface pressing component 22 is used to press the middle part of the automotive interior part 6.

[0040] The pressing unit 2 is divided into a point pressing component 21 and a surface pressing component 22 to prevent unstable pressing or edge lifting of the pressed automotive interior part 6. This is because the traditional pressing unit 2 mainly uses the surface pressing component 22 for pressing. When the surface pressing component 22 presses the automotive interior part 6, due to the large contact area between the surface pressing component 22 and the automotive interior part 6, it cannot press the edges of the automotive interior part 6. The surface pressing component 22 can only press the middle position of the automotive interior part 6. As a result, when the automotive interior part 6 is pressed onto the support mold 1, the edges of the automotive interior part 6 are prone to lifting, which in turn causes the hot riveting post to be unable to be smoothly inserted into the automotive interior part 6 or to shift or tilt after being inserted. However, by setting up the point pressing component 21 and the surface pressing component 22 and combining the two, the automotive interior part 6 can be stably placed on the support mold 1, and the edges of the automotive interior part 6 will not lift.

[0041] Reference Figure 3 The point pressing assembly 21 includes a soft rubber head 211 for contacting the edge of the automotive interior part 6, and the surface pressing assembly 22 includes a pressing plate 221 for contacting the center of the automotive interior part 6. The size of the soft rubber head 211 is smaller than the size of the pressing plate 221.

[0042] Reference Figure 3 and Figure 4 The point-pressing component 21 also includes a first telescopic rod 212, a first telescopic sleeve 213, and a first spring 214; The first telescopic rod 212 is vertically fixed at the upper part of the soft rubber head 211; The first telescopic sleeve 213 is vertically disposed on the upper part of the first telescopic rod 212, and the upper end of the first telescopic rod 212 extends into the first telescopic sleeve 213 and slides in cooperation with the first telescopic sleeve 213. The first spring 214 is sleeved around the first telescopic rod 212, and the two ends of the first spring 214 are fixed to the lower end of the first telescopic rod 212 and the lower end of the first telescopic sleeve 213, respectively.

[0043] After the soft rubber head 211 contacts the edge of the automotive interior trim 6, the hot riveting head 3 continues to descend, the first telescopic rod 212 slides into the first telescopic sleeve 213, and the first spring 214 gradually compresses. As the first spring 214 is compressed, the pressing force of the soft rubber head 211 on the edge of the automotive interior trim 6 also gradually increases, preventing the edge of the automotive interior trim 6 from lifting up.

[0044] Reference Figure 3 and Figure 4The face pressing assembly 22 also includes a second telescopic rod 222, a second telescopic sleeve 223, and a second spring 224; The second telescopic rod 222 is vertically fixed on the upper part of the pressing plate 221; The second telescopic sleeve 223 is vertically disposed on the upper part of the second telescopic rod 222, and the upper end of the second telescopic rod 222 extends into the second telescopic sleeve 223 and slides in cooperation with the second telescopic sleeve 223. The second spring 224 is sleeved around the second telescopic rod 222, and the two ends of the second spring 224 are fixed to the lower end of the second telescopic rod 222 and the lower end of the second telescopic sleeve 223, respectively.

[0045] During the descent of the pressing unit 2, the soft rubber head 211 and the pressing plate 221 simultaneously contact the automotive interior part 6. Subsequently, the hot riveting head 3 continues to descend, and both the first spring 214 and the second spring 224 gradually compress. The pressing force of the soft rubber head 211 on the edge of the automotive interior part 6 gradually increases, and the pressing force of the pressing plate 221 on the center of the automotive interior part 6 also gradually increases. When the hot riveting head 3 contacts the upper end of the hot riveting post placed on the automotive interior part 6 and presses the upper end of the hot riveting post into shape, the elastic force of the first spring 214 and the second spring 224 reaches its maximum. At this time, both the point pressing component 21 and the surface pressing component 22 can provide the maximum pressing force to the automotive interior part 6, ensuring the stable progress of the hot riveting process. After the hot riveting head 3 completes the hot riveting and rotation, the linear actuator 5 drives the hot riveting head 3 to rise. During the upward movement, the hot riveting head 3 remains in a rotating state. During this process, the soft rubber head 211 and the pressing plate 221 continue to press the automotive interior trim 6. If the upper end of the hot riveting post adheres to the hot riveting head 3, the automotive interior trim 6 will not rise synchronously with the hot riveting head 3 under the continuous pressing action of the pressing unit 2. The upper end of the hot riveting post can easily separate from the hot riveting head 3. Furthermore, since the hot riveting head 3 continues to rotate during the separation process, stringing is less likely to occur. After the hot riveting head 3 separates from the upper end of the hot riveting post, with the continuous driving of the linear actuator 5, the pressing unit 2 separates from the automotive interior trim 6 after both the first spring 214 and the second spring 224 have returned to their original positions.

[0046] Reference Figure 2 A discharge port 11 is provided on the side wall of the support mold 1, and the lower end face of the discharge port 11 is coplanar with the bottom end face of the support mold 1.

[0047] After hot riveting is completed, the automotive interior parts 6 need to be removed. However, some debris will remain in the support mold 1. In order to ensure the stability of the hot riveting process, the debris in the support mold 1 needs to be cleaned regularly. By opening a discharge port 11 on the side wall of the support mold 1, it is easy to discharge the debris remaining in the support mold 1.

[0048] Reference Figure 2A blower 12 is provided on the opposite side of the discharge port 11 of the support mold 1, and the discharge port 11 and the blower 12 are distributed along the length direction of the support mold 1.

[0049] Each time hot riveting is completed and the automotive interior part 6 is removed, the blower 12 is activated, and the blower 12 blows air into the support mold 1, causing the debris remaining in the support mold 1 to be discharged from the discharge port 11.

[0050] Working principle: First, in the preliminary preparation stage, the staff needs to place the car interior part 6 horizontally on the support mold 1, which provides stable support for the interior part. Then, the hot riveting post is accurately placed into the corresponding riveting position of the interior part through the feeding mechanism to ensure the accuracy of subsequent hot riveting operations.

[0051] After preparation, the hot riveting stage begins. At this time, the linear actuator 5 is activated, synchronously driving the pressing unit 2, the driving unit 4, and the hot riveting head 3 to descend. During the descent, the pressing unit 2 contacts the automotive interior part 6 before the hot riveting head 3. As the hot riveting head 3 continues to approach the automotive interior part 6, the pressing force of the pressing unit 2 gradually increases. The point pressing component 21 is responsible for pressing the outer periphery of the interior part, while the surface pressing component 22 presses the middle part of the interior part, ensuring that the interior part does not shift or lift during the hot riveting process. When the hot riveting head 3 contacts the hot riveting post, the high temperature of 180-300℃ and continuous pressure cause the upper end of the hot riveting post to gradually soften and deform until the linear actuator 5 drives the hot riveting head 3 to descend to the lowest position. The upper end of the hot riveting post is finally formed into a hemispherical shape, and the initial hot riveting operation is completed.

[0052] Next, the separation optimization stage begins. The drive unit 4 starts to drive the hot riveting head 3 to rotate along its own vertical axis, while the hot riveting head 3 stops heating. To accelerate the cooling and solidification of the hot riveting column, the air blowing pipe 7 on one side of the hot riveting head 3 is activated simultaneously, with its air outlet pointing towards the upper end of the hot riveting column, quickly carrying away the heat through airflow. Subsequently, the linear actuator 5 drives the hot riveting head 3 to rise. During the rise, the hot riveting head 3 continues to rotate, and the pressing unit 2 continues to apply pressure to the automotive interior parts 6 to prevent the interior parts from rising synchronously with the hot riveting head 3, ensuring that the hot riveting column and the hot riveting head 3 separate smoothly, effectively reducing wire drawing and material residue.

[0053] Finally, in the post-cleaning stage, after the hot riveting column and the hot riveting head 3 are completely separated, the workers take out the processed car interior parts 6; at this time, the blower 12 on the side of the support mold 1 corresponding to the discharge port 11 is started, and the airflow blows in along the length of the support mold 1, and discharges the debris generated during the hot riveting process from the discharge port 11, so as to avoid the debris residue affecting the subsequent processing and prepare for the next hot riveting operation.

[0054] The above embodiments only illustrate one or more implementations of the present invention, and their descriptions are relatively specific and detailed, but they should not be construed as limiting the scope of protection of the present invention. It should be noted that those skilled in the art can make various modifications and improvements without departing from the concept of the present invention, and these all fall within the scope of protection of the present invention. Therefore, the scope of protection of the present invention should be determined by the appended claims.

Claims

1. A hot riveting processing equipment for automotive interior parts, comprising a support mold (1) and a pressing unit (2) for pressing automotive interior parts (6) into the support mold (1); Its features are, It also includes a hot riveting head (3), a drive unit (4), and a linear driver (5); The hot riveting head (3) is vertically positioned above the support mold (1); The drive unit (4) is located on the upper part of the hot riveting head (3). The drive unit (4) is used to drive the hot riveting head (3) to rotate along the vertical axis. The linear driver (5) is located on the upper part of the drive unit (4). The linear driver (5) is used to drive the hot riveting head (3) and the drive unit (4) to rise and fall synchronously.

2. The automotive interior parts hot riveting equipment according to claim 1, characterized in that, The processing equipment also includes an air blowing pipe (7); The air blowing pipe (7) is set on one side of the hot riveting head (3), and the air outlet of the air blowing pipe (7) points to the lower end of the hot riveting head (3).

3. The automotive interior parts hot riveting equipment according to claim 1, characterized in that, The drive unit (4) includes a rotary driver (41), a bracket (42), and a support ring (43). The rotary driver (41) is vertically mounted on the upper part of the hot riveting head (3), and the rotary driver (41) is used to drive the hot riveting head (3) to rotate; The bracket (42) is located at the lower part of the rotary driver (41), and the rotary driver (41) is mounted on the bracket (42); The support ring (43) is fixedly installed at the lower part of the bracket (42) along the extension direction of the hot riveting head (3). The output shaft of the rotary driver (41) passes through the inside of the support ring (43), and the lower part of the support ring (43) provides support for the upper part of the hot riveting head (3).

4. The automotive interior parts hot riveting equipment according to claim 3, characterized in that, The drive unit (4) includes a drive shaft (44) and a groove (45); The drive shaft (44) is vertically fixed on the output end of the rotary driver (41), and the horizontal cross-section of the drive shaft (44) is a non-circular structure; The groove (45) is vertically opened on the upper part of the hot riveting head (3), and the drive shaft (44) extends into the groove (45) and slides into the groove (45). The horizontal cross-sectional shape of the groove (45) is the same as the horizontal cross-sectional shape of the drive shaft (44).

5. The automotive interior parts hot riveting equipment according to claim 1, characterized in that, The pressing unit (2) includes a point pressing component (21) and a surface pressing component (22); The point-pressing components (21) are arranged in a ring and are used to press the outer periphery of the automotive interior parts (6); The surface pressing component (22) is located on the inner side of the ring formed by the point pressing component (21), and the surface pressing component (22) is used to press the middle part of the automotive interior part (6).

6. The automotive interior parts hot riveting equipment according to claim 5, characterized in that, The point pressing assembly (21) includes a soft rubber head (211) for contacting the edge of the automotive interior part (6), and the surface pressing assembly (22) includes a pressing plate (221) for contacting the center of the automotive interior part (6). The size of the soft rubber head (211) is smaller than the size of the pressing plate (221).

7. The automotive interior parts hot riveting equipment according to claim 6, characterized in that, The point-pressing assembly (21) also includes a first telescopic rod (212), a first telescopic sleeve (213), and a first spring (214). The first telescopic rod (212) is vertically fixed at the upper part of the soft rubber head (211); The first telescopic sleeve (213) is vertically disposed on the upper part of the first telescopic rod (212), and the upper end of the first telescopic rod (212) extends into the first telescopic sleeve (213) and slides in cooperation with the first telescopic sleeve (213); The first spring (214) is sleeved around the first telescopic rod (212), and the two ends of the first spring (214) are fixed to the lower end of the first telescopic rod (212) and the lower end of the first telescopic sleeve (213), respectively.

8. The automotive interior parts hot riveting equipment according to claim 6, characterized in that, The face pressing assembly (22) also includes a second telescopic rod (222), a second telescopic sleeve (223), and a second spring (224); The second telescopic rod (222) is vertically fixed on the upper part of the pressing plate (221); The second telescopic sleeve (223) is vertically installed on the upper part of the second telescopic rod (222), and the upper end of the second telescopic rod (222) extends into the second telescopic sleeve (223) and slides in cooperation with the second telescopic sleeve (223); The second spring (224) is sleeved around the second telescopic rod (222), and the two ends of the second spring (224) are fixed to the lower end of the second telescopic rod (222) and the lower end of the second telescopic sleeve (223), respectively.

9. The automotive interior parts hot riveting equipment according to claim 1, characterized in that, A discharge port (11) is provided on the side wall of the support mold (1), and the lower end face of the discharge port (11) is coplanar with the bottom end face of the support mold (1).

10. The automotive interior parts hot riveting equipment according to claim 9, characterized in that, A blower (12) is provided on the opposite side of the discharge port (11) of the support mold (1), and the discharge port (11) and the blower (12) are distributed along the length direction of the support mold (1).

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