A molding die for automobile needle-punched carpet

Abstract

A mold for forming automotive needle-punched carpets relates to the technical field of automotive carpet forming molds. The technical solution adopted includes an upper mold, a lower mold, a telescopic device, a loading frame, and a loading frame. The upper and lower molds are each provided with an upper needle hanging platform on the inner side of the head and tail of the loading frame, and a lower needle hanging platform on the head and tail of the loading frame. The upper and lower molds are respectively provided with a receiving groove. The upper and lower needle hanging platforms, the lower needle hanging platforms, the sides of the loading frame, and the sides of the loading frame are each provided with hanging needles and receiving holes. The hanging needles in the loading frame and the hanging needles in the loading frame are arranged at intervals. Connecting portions are connected between the ends of the head and the two sides of the upper and lower molds. The upper and lower molds are provided with chamfered notches. Main hanging needles are provided on the outer side of the two connecting portions and at both ends of the tail of the loading frame. The tail of the loading frame is provided with a receiving hole corresponding to the position of the main hanging needles. The present invention reduces the size of the fabric required for press molding and improves fabric utilization.

Description

Technical Field

[0001] The invention relates to the technical field of automobile carpet forming molds, in particular to an automobile needle-punched carpet forming mold. Background Art

[0002] Needle-punched carpet is a common automotive interior component, designed to conform to the vehicle's interior structure. It is typically formed by heating and then pressing needle-punched fabric. Needle-punched fabric is the primary raw material in carpet production, and its cost accounts for a significant portion of the total cost. With increasingly competitive markets, improving the utilization rate of needle-punched fabric while ensuring product quality is crucial for increasing profitability and boosting the success rate of new project quotes. In the existing needle-punched carpet molding process, improvements to the pressing die structure are needed to improve needle-punched fabric utilization and reduce product costs. Summary of the Invention

[0003] Aiming at the problem that the structural design of the pressing mold in the existing technical solution is insufficient, resulting in a low utilization rate of the needle-punched fabric, the present invention provides a molding mold for automobile needle-punched carpet.

[0004] The present invention provides the following technical solution: a mold for forming a needle-punched carpet for automobiles, comprising an upper mold and a lower mold, wherein the upper mold is connected to a feeding frame through a telescopic device, and the lower mold is connected to a feeding frame through a telescopic device, and the inner sides of the head and tail of the feeding frame are both provided with upper needle hanging platforms, and the head and tail of the feeding frame are both provided with lower needle hanging platforms, and the upper mold and the lower mold are respectively provided with accommodating grooves that cooperate with the upper and lower needle hanging platforms, and the upper and lower needle hanging platforms are respectively provided with a side facing each other and a side of the upper and lower needle hanging platforms and a side of the feeding frame. The sides of the upper and lower material frames facing each other are respectively provided with hanging needles and accommodating holes corresponding to the positions of the hanging needles, and the hanging needles in the upper material frame and the lower material frame are arranged at intervals; the upper and lower material frames are connected between the ends of the head and the two side parts with connecting parts that form chamfered shapes between the head and the side parts, and the upper mold and the lower mold are provided with chamfered notches corresponding to the connecting parts; the outer sides of the two connecting parts of the lower material frame and the two ends of the tail are respectively provided with main hanging needles, and the tail of the upper material frame is provided with accommodating holes corresponding to the positions of the main hanging needles.

[0005] Preferably, a plurality of reinforcement hanging needles are provided on the side of the upper hanging needle platform facing the lower hanging needle platform, and the lower hanging needle platform is provided with accommodating holes corresponding to the reinforcement hanging needles, and the length of the reinforcement hanging needles protruding from the upper hanging needle platform is greater than the length of the hanging needles protruding from the upper hanging needle platform.

[0006] Preferably, both sides of the upper and lower needle hanging platforms and the upper and lower material frames are provided with mounting holes, and the mounting holes are threaded holes. The hanging needle includes a threaded portion, a flat square portion and a conical head connected in sequence, and the threaded portion is threadedly connected in the mounting hole.

[0007] Preferably, the length of the hanging needle is 25-30 mm, the length of the tapered head is 15 mm, and the length of the flat square portion is 5 mm.

[0008] Preferably, both sides of the upper and hanging needle platforms and the upper and lower material frames are provided with mounting holes, the hanging needle includes a cylindrical portion and a conical head connected in sequence, the cylindrical portion is slidably connected to the mounting hole, the outer walls of the upper and hanging needle platforms and both sides of the upper and lower material frames are provided with side threaded holes connected to the mounting holes, the side threaded holes are threadedly connected with locking bolts, and the cylindrical portion is provided with a flat square portion at a position corresponding to the locking bolt.

[0009] Preferably, the length of the hanging needle is 40-50 mm, and the length of the tapered head is 15 mm.

[0010] Preferably, the distance between two adjacent hanging needles is 10 cm.

[0011] Preferably, the distance between the inner edge of the hanging needles on the upper and lower hanging needle platforms and the product indentation line is 15 mm.

[0012] The beneficial effects of the present invention are as follows: by installing upper and lower hanging needle platforms on the inner side of the material frame, the hanging needles at the head and tail of the upper and lower material frames are moved inward, thereby reducing the size of the mold core and the size of the needle-punched fabric; the hanging needles are changed from being distributed entirely in the lower material frame to being distributed at intervals in the upper and lower parts, thereby reducing the density of the hanging needles in the lower material frame, facilitating product removal and improving production efficiency; by changing the ends of the heads of the upper and lower molds and the upper and lower material frames into chamfered structures, the main hanging needles at both ends of the heads are moved a distance toward the mold core, thereby helping to reduce the size of the needle-punched fabric and improving fabric utilization; for the head and tail of the fabric where the force is greater, reinforced hanging needles are added to the head and tail of the upper material frame to strengthen the reinforcement effect of the head and tail of the fabric, thereby preventing shrinkage and material shortage. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] Figure 1 A side view of an embodiment of the present invention Figure I .

[0014] Figure 2 A side view of an embodiment of the present invention Figure II .

[0015] Figure 3 This is a top view of the lower mold in one embodiment of the present invention.

[0016] Figure 4 for Figure 1 Magnified view of part A.

[0017] Figure 5 for Figure 3 Enlarged view of part B.

[0018] Figure markings: 1-upper mold, 2-lower mold, 3-telescopic device, 31-cylinder, 32-guide column, 4-loading frame, 41-head, 42-tail, 43-side, 5-unloading frame, 51-lower hanging needle platform, 61-hanging needle, 62-accommodating hole, 7-connecting part, 8-main hanging needle, 9-locking bolt. DETAILED DESCRIPTION

[0019] The following is a more detailed description of the embodiments of the present invention with reference to the accompanying drawings and reference numerals, so that those skilled in the art can implement the invention after studying this specification. It should be understood that the specific embodiments described herein are only used to illustrate the invention and are not intended to limit the invention.

[0020] The present invention provides Figure 1-3 The mold for forming a needle-punched carpet for an automobile shown in the figure includes an upper mold 1 and a lower mold 2. The upper mold 1 is connected to a loading frame 4 via a telescopic device 3, while the lower mold 2 is connected to a loading frame 5 via a telescopic device 3. The loading frame 4 and the loading frame 5 correspond in position. Under the action of the telescopic device 3, the loading frame 4 and the loading frame 5 are pressed together to secure the needle-punched fabric. The mold also includes a mold core for pressing the carpet into shape. The upper mold 1 and the lower mold 2 are respectively provided with an upper mold core and a lower mold core, located inside the loading frame and the loading frame. Specifically, the loading frame 4 and the loading frame 5 are both frame-type structures, including a head 41, a tail 42, and two side portions 43, corresponding to the head, tail, and sides of the needle-punched carpet and the automobile, respectively. The telescopic device 3 is used to drive the loading frame 4 and the unloading frame 5 to move relative to the upper mold 1 and the lower mold 2 respectively. Specifically, the telescopic device 3 includes multiple groups of cylinders 31 and guide columns 32 arranged on the upper mold 1 and the lower mold 2. The output shaft of the upper cylinder 31 of the upper mold 1 is connected to the loading frame 4, and the output shaft of the upper cylinder 31 of the lower mold 2 is connected to the unloading frame 5; the stroke of the cylinder 31 and the guide column 32 needs to make the bottom surface of the loading frame lower than the lowest point of the upper mold core when it is extended, so that the material frame contacts the fabric first during the mold closing process to prevent the fabric from shrinking, which can effectively improve the fabric utilization rate.

[0021] Upper needle platforms are installed on the inner sides of the head and tail of the loading frame 4, and lower needle platforms 51 are installed on the head and tail of the unloading frame 5. The upper mold 1 and lower mold 2 are respectively provided with accommodating grooves that cooperate with the upper and lower needle platforms, so that the upper and lower needle platforms do not affect the normal movement of the loading frame 4 and unloading frame 5. Hanging needles 61 and accommodating holes 62 corresponding to the positions of hanging needles 61 are installed on the sides of the upper and lower needle platforms 51 facing each other, as well as the sides of the loading frame 4 and the side of the unloading frame 5 facing each other. Hanging needles 61 are needle-shaped structures with their axes parallel to the movement direction of the upper and lower loading frames. They are used to pierce the edges of the needle-punched fabric when the upper and lower loading frames are pressed together to secure the needle-punched fabric and facilitate the tightening of the needle-punched fabric during molding to prevent problems such as deviation, shrinkage, and material shortages. Accommodating holes 62 are used to accommodate the portion of the hanging needle protruding from the upper and lower loading frames, allowing the upper and lower loading frames to be closed. The upper and lower needle hanging tables are installed on the inner side of the upper and lower material frames, so that the head and tail hanging needles are moved inward to reduce the size of the mold core and the size of the needle-punched fabric, effectively reducing the area of ​​the invalid area and improving the utilization rate of the needle-punched fabric.

[0022] The hanging needles of traditional molding molds are all distributed on the blanking frame. After molding, the loading frame is detached. Since the hanging needles are relatively dense, it is not conducive to material removal. In the present invention, the hanging needles 61 in the loading frame 4 and the blanking frame 5 (including the upper and lower hanging needle platforms) are arranged at intervals, so that the hanging needles 61 are evenly distributed on the upper and lower material frames, which is conducive to material removal and reduces labor intensity.

[0023] Connecting parts 7 are connected between the ends of the head and the two sides of the upper and lower material frames, forming chamfered shapes on the head and side. The upper mold 1 and the lower mold 2 are provided with chamfered notches corresponding to the connecting parts 7. The outer sides of the two connecting parts 7 of the lower material frame 5 and the two ends of the tail are provided with main hanging needles 8. The tail of the upper material frame 4 is provided with accommodating holes corresponding to the positions of the main hanging needles 8. The main hanging needles 8 are located at the four corners of the lower material frame 5 and are used to initially fix the needle-punched fabric. Their length can be greater than that of the hanging needles 61. Figure 3 and Figure 5 As shown, the connecting portion 7 forms a chamfer between the head and tail of the upper and lower material frames, and the mold head is trapezoidal. Without affecting the functionality of the product, the main hanging needle located at the head is moved inward, which is beneficial to reducing the size of the needle-punched fabric, improving the fabric utilization rate, and reducing the risk of the operator scratching his arm when hanging the material.

[0024] When using this invention, the telescopic mechanism is first controlled to separate the upper and lower material frames. The needle-punched fabric is then extended onto the lower material frame and initially secured by hooking its corners onto four main hooking pins. The upper and lower material frames are then closed, with the material frames contacting the fabric before the mold core. The hooking pins penetrate the edges of the fabric, completely securing it before molding. The table below shows the changes in raw material area consumed by various carpet production projects before and after the application of this invention. As can be seen, the application of this invention reduced the raw material area by 5.9-11.4%, and material costs were also reduced by 5.9-11.4%, significantly saving material costs in large-scale production.

[0025]

[0026] Preferably, the upper needle-hanging platform is further provided with a plurality of reinforcement needles on the side facing the lower needle-hanging platform 51. The lower needle-hanging platform 51 is provided with corresponding receiving holes for the reinforcement needles. The length of the reinforcement needles protruding from the upper needle-hanging platform is greater than the length of the needles 51 protruding from the upper needle-hanging platform. During molding, the needle-punched fabric is subjected to the greatest tension in the leading and trailing directions of the upper and lower material frames. Therefore, the reinforcement needles increase the needle density at the leading and trailing ends of the needle-punched fabric, enhancing the reinforcement effect and preventing shrinkage and material shortages. Specifically, the number of reinforcement needles can be three, equidistantly distributed along the length of the upper needle-hanging platform at the center of the leading and trailing ends of the upper material frame.

[0027] Preferably, in one embodiment, both sides of the upper and lower needle hanging platforms, as well as the upper and lower material frames, are provided with threaded mounting holes. The hanging needle 61 comprises a threaded portion, a flat square portion, and a tapered head, which are connected in sequence. The threaded portion is threaded into the mounting hole. The length of the hanging needle 61 can be 25-30 mm, with the tapered head being 15 mm long and the flat square portion being 5 mm long. The flat square portion facilitates tightening the hanging needle. After installation, only the tapered head and flat square portion of the hanging needle 61 protrude from the upper and lower material frames, protruding by approximately 20 mm. Compared to traditional molds, this shortens the protrusion of the hanging needle, facilitating material removal.

[0028] Preferably, in another embodiment, mounting holes are provided on both sides of the upper and lower needle hanging platforms, as well as the upper and lower material frames. The hanging needle 61 comprises a cylindrical portion, a flat square portion, and a tapered head connected in sequence. The cylindrical portion is inserted into the mounting hole. Side threaded holes are provided on the outer walls of the upper and lower needle hanging platforms, as well as the upper and lower material frames, at positions corresponding to the flat square portion, connecting to the mounting hole. These side threaded holes are threadedly connected to locking bolts 9. The length of the hanging needle 61 can be 40-50 mm, with the flat square portion being 5 mm long and the tapered head being 15 mm long. The locking method of the hanging needle 61 is changed to side screw locking, facilitating quick replacement. The flat square portion is easy to lock. After installation, only the tapered head and flat square portion of the hanging needle 61 protrude from the upper and lower material frames, with a protruding length of approximately 20 mm.

[0029] Preferably, the distance between two adjacent hanging needles 61 is 10 cm.

[0030] Preferably, the distance between the inner edge of the hanging needles 61 on the upper and lower hanging needle platforms and the product indentation line is 15 mm.

[0031] The above is a description of one or more embodiments of the present invention, and while the description is relatively specific and detailed, it should not be construed as limiting the scope of the present invention. It should be noted that a person skilled in the art may make various modifications and improvements without departing from the spirit of the present invention, and these modifications and improvements fall within the scope of protection of the present invention. Therefore, the scope of protection of the present invention shall be determined by the appended claims.

Claims

1. A mold for forming a needle-punched carpet for automobiles, comprising an upper mold (1) and a lower mold (2), wherein the upper mold (1) is connected to a loading frame (4) via a telescopic device (3), and the lower mold (2) is connected to a loading frame (5) via a telescopic device (3), and characterized in that: The head and tail inner sides of the loading frame (4) are both provided with upper hanging needle platforms, and the head and tail inner sides of the unloading frame (5) are both provided with lower hanging needle platforms (51). The upper mold (1) and the lower mold (2) are respectively provided with accommodating grooves that cooperate with the upper and lower hanging needle platforms. The upper hanging needle platforms and the lower hanging needle platforms (51) are provided with hanging needles (61) and accommodating holes (62) corresponding to the positions of the hanging needles (61) on the sides facing each other, as well as on the sides of the loading frame (4) and the unloading frame (5). The hanging needles (61) in the loading frame (4) and the hanging needles (61) in the unloading frame (5) are arranged at intervals. Connecting portions (7) are connected between the ends of the head and the two side portions of the upper and lower material frames so as to form chamfered shapes between the head and the side portions, and the upper die (1) and the lower die (2) are provided with chamfered notches corresponding to the connecting portions (7); main hanging needles (8) are provided on the outer sides of the two connecting portions (7) and at both ends of the tail of the lower material frame (5), and a receiving hole corresponding to the position of the main hanging needles (8) is provided at the tail of the upper material frame (4).

2. The automotive needle-punched carpet forming mold according to claim 1, characterized in that: A plurality of reinforcement hanging needles are further provided on a side of the upper hanging needle platform facing the lower hanging needle platform (51), and the lower hanging needle platform (51) is provided with accommodating holes corresponding to the reinforcement hanging needles, and the length of the reinforcement hanging needles protruding from the upper hanging needle platform is greater than the length of the hanging needles (61) protruding from the upper hanging needle platform.

3. The automotive needle-punched carpet forming mold according to claim 1, characterized in that: The upper needle hanging platform, the lower needle hanging platform and both sides of the upper and lower material frames are all provided with mounting holes, the mounting holes are threaded holes, and the hanging needle (61) comprises a threaded portion, a flat square portion and a tapered head connected in sequence, and the threaded portion is threadedly connected in the mounting hole.

4. The automotive needle-punched carpet forming mold according to claim 3, characterized in that: The length of the hanging needle (61) is 25-30 mm, the length of the tapered head is 15 mm, and the length of the flat square portion is 5 mm.

5. The automotive needle-punched carpet forming mold according to claim 1, characterized in that: The upper needle hanging platform, the lower needle hanging platform and both sides of the upper and lower material frames are all provided with mounting holes, the hanging needle (61) comprises a cylindrical portion and a conical head connected in sequence, the cylindrical portion is slidably connected to the mounting hole, the outer walls of the upper needle hanging platform, the lower needle hanging platform and both sides of the upper and lower material frames are provided with side threaded holes connected to the mounting holes, the side threaded holes are threadedly connected with locking bolts (9), and the cylindrical portion is provided with a flat square portion at a position corresponding to the locking bolt (9).

6. The automotive needle-punched carpet forming mold according to claim 5, characterized in that: The length of the hanging needle (61) is 40-50 mm, and the length of the tapered head is 15 mm.

7. The automotive needle-punched carpet forming mold according to claim 1, characterized in that: The distance between two adjacent hanging needles (61) is 10 cm.

8. The automotive needle-punched carpet forming mold according to claim 1, characterized in that: The distance between the inner edge of the hanging needle (61) on the upper and lower hanging needle platforms and the product indentation line is 15 mm.

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