A hanging needle for automobile roof pressing and a mold

Abstract

The utility model relates to a kind of material hanging needle and mould for automobile roof die. The material hanging needle includes fixed chassis, is installed on mould;Shell is connected with fixed chassis threadedly;The top of the shell is provided with first through-hole;Material tube;The bottom of the material tube is in the shell, and the tube body of material tube is worn out from the through-hole of shell, and the top of material tube is provided with second through-hole;Hanging needle;The bottom of the hanging needle is installed on fixed chassis, and top can be worn out from the first through-hole of shell and the second through-hole of material tube;Spring, it is located in shell and is set in hanging needle outer;The spring and the bottom of material tube abut. Compared with prior art, the utility model not only can be in automobile roof part hot baking to raw material puncture to tighten, but also can reduce the time of waste material extraction, greatly improve production efficiency.

Description

Technical Field

[0001] This utility model relates to the field of automobile manufacturing technology, and in particular to a material hanging needle and mold for automobile roof pressing. Background Technology

[0002] The mainstream manufacturing process for automotive headliner parts is hot-bake cold-press. Its core is to transform planar composite materials into three-dimensional complex curved parts through a physical process of "heating and softening – cooling and shaping," ensuring a smooth and flawless surface. The raw materials for automotive headliner hot-bake cold-press are mostly carpet, and headliner parts require a wrinkle-free appearance. Therefore, when the raw material is heated and laid on the press mold, ejector pins or hanging pins need to be installed on the mold to ensure that the material is taut during the cooling and forming punching process, thus resulting in a wrinkle-free appearance for the headliner parts.

[0003] Based on this, CN203449507U discloses an improved mold ejector pin. The top of the ejector pin body has multiple protrusions, each being an elastic element with a semi-circular cross-section. The bottom of the ejector pin body has reinforcing ribs. Three elastic protrusions are evenly distributed on the top surface of the ejector pin body. This mold ejector pin, by incorporating elastic protrusions, can effectively reduce impact force and prevent slippage. However, although this mold ejector pin enhances anti-slip properties and strength, it still cannot achieve automatic piercing of carpet material during the molding process of automotive headliners. Furthermore, carpet hardens after heating and cooling, requiring the removal of waste material from the hanging pin when using the aforementioned ejector pin, which is time-consuming and labor-intensive, affecting production efficiency.

[0004] Therefore, in order to address the technical problem that existing mold ejector pins cannot automate the processes of piercing and tightening materials and ejecting waste, there is an urgent need to develop a new type of material-hanging pin and a matching mold for automotive roof molding. Utility Model Content

[0005] The purpose of this utility model is to overcome the defects of the existing technology and provide a hanging pin and mold for automobile roof molding.

[0006] The objective of this utility model can be achieved through the following technical solutions: This utility model first provides a material hanging pin for automotive roof molding, the material hanging pin comprising: The fixed chassis is mounted on the mold. The outer casing is threadedly connected to the fixed chassis; a first through hole is provided on the top of the outer casing; Top material tube; the bottom of the top material tube is located inside the outer shell, the tube body of the top material tube passes through the through hole of the outer shell, and a second through hole is opened at the top of the top material tube; Hanging pin; the bottom of the hanging pin is mounted on a fixed base, and the top can pass through the first through hole of the outer shell and the second through hole of the top material tube; A spring is located inside the outer casing and sleeved on the outside of the hanging pin; the spring abuts against the bottom of the top material tube.

[0007] Furthermore, the fixed chassis includes a chassis body and an annular mounting portion disposed on the chassis body.

[0008] Furthermore, both the outer walls of the chassis body and the annular mounting portion are provided with threads.

[0009] Furthermore, the outer casing is threadedly connected to the annular mounting portion of the fixed chassis.

[0010] Furthermore, the bottom of the spring is mounted within the annular area enclosed by the annular mounting portion.

[0011] Furthermore, the chassis body, outer shell, top material tube, and hanging pin are all coaxially arranged.

[0012] Furthermore, the first through hole of the outer shell and the second through hole of the top material tube are concentrically arranged.

[0013] Furthermore, the bottom of the top material tube is provided with a limiting ring, the maximum outer diameter of which is greater than the diameter of the first through hole.

[0014] Furthermore, the diameter of the second through hole is greater than the maximum outer diameter of the hanging pin.

[0015] Furthermore, the hanging needle includes a hanging needle body and a hanging needle tip.

[0016] Furthermore, the main body of the hanging needle is a cylindrical structure, and the main body of the hanging needle is integrally connected with the tip of the hanging needle.

[0017] Furthermore, the hanging needle body protrudes from the first through hole.

[0018] Furthermore, the tip of the hanging needle does not protrude from the second through hole in its natural state, but protrudes from the second through hole under the action of external pressure on the top material tube.

[0019] This utility model also provides a mold, which includes a plurality of hanging pins for pressing automobile roofs.

[0020] Furthermore, the hanging pins are installed at the four corners of the mold scrap area.

[0021] Compared with the prior art, the present invention has the following technical advantages: The novel car roof molding hanging needle of this utility model can be easily installed on the processing mold. When the ejector tube is pressurized and moves downward, the top of the hanging needle will pierce the raw material covering the ejector tube, thereby tightening the raw material during the hot baking process to ensure that the appearance is intact and wrinkle-free after cooling. Moreover, when the external force is removed, the waste material can be automatically ejected by the restoring force of the spring, which greatly saves the material picking time and improves the production efficiency. Attached Figure Description

[0022] Figure 1 This is an exploded view of the hanging needle for the molding of the automobile roof according to this utility model.

[0023] Figure 2 This is a schematic diagram of the overall structure of the car roof molding hanging pin after assembly.

[0024] Figure 3 This is a cross-sectional view of the hanging pin for the automotive roof molding of this utility model.

[0025] Explanation of markings in the diagram: 1-Fixed chassis; 1.1-Chassis body; 1.2-Annular mounting part; 2-Outer shell, 2.1-First through hole; 3-Top material tube, 3.1-Second through hole, 3.2-Limiting retaining ring; 4-Hanging needle, 4.1-Hanging needle body, 4.2-Hanging needle tip; 5-Spring. Detailed Implementation

[0026] The present invention will now be described in detail with reference to the accompanying drawings and specific embodiments. This embodiment is based on the technical solution of the present invention and provides detailed implementation methods and specific operating procedures; however, the scope of protection of the present invention is not limited to the following embodiments.

[0027] In this utility model, it should be noted that the terms "center," "upper," "lower," "left," "right," "vertical," "horizontal," "inner," and "outer," etc., indicating orientation or positional relationships, are based on the orientation or positional relationships shown in the accompanying drawings and are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this utility model; the terms "first," "second," and "third" are used for descriptive purposes only and should not be construed as indicating or implying relative importance; furthermore, unless otherwise explicitly specified and limited, the terms "installed," "connected," and "linked" should be interpreted broadly, for example, they can be fixed connections, detachable connections, or integral connections; they can be mechanical connections or electrical connections; they can be direct connections or indirect connections through an intermediate medium; they can be internal connections between two components. For those skilled in the art, the specific meaning of the above terms in this utility model can be understood according to the specific circumstances.

[0028] It should be noted that similar labels and letters in the following figures indicate similar items. Therefore, once an item is defined in one figure, it does not need to be further defined and explained in subsequent figures.

[0029] Example 1: This embodiment provides a material hanging pin for automotive roof molding, such as... Figure 1-3 As shown, the hanging needle includes a fixed base 1, a shell 2, a top tube 3, a hanging needle 4, and a spring 5.

[0030] In this embodiment, the fixed base 1 is mounted on the mold. The outer shell 2 is threadedly connected to the fixed base 1, and the top of the outer shell 2 has a first through hole 2.1. In this embodiment, the bottom of the ejector tube 3 is located inside the outer shell 2, the tube body of the ejector tube 3 passes through the through hole 2.1 of the outer shell 2, and the top of the ejector tube 3 has a second through hole 3.1.

[0031] In this embodiment, the bottom of the hanging pin 4 is mounted on the fixed base plate 1, and the top can pass through the first through hole 2.1 of the outer shell 2 and the second through hole 3.1 of the top material tube 3.

[0032] In this embodiment, the spring 5 is located inside the outer shell 2 and sleeved on the outside of the hanging needle 3. The spring 5 abuts against the bottom of the top material tube 3 and can be compressed when pressure is applied to the top material tube 3 from the outside, so that the top of the hanging needle 4 passes through the second through hole 3.1 of the top material tube 3 and pierces the raw material covering the top material tube 3.

[0033] The novel car roof molding hanging pin of this embodiment can be easily installed on the processing mold. When the ejector tube 3 is pressurized and moves downward, the top of the hanging pin 4 will pierce the raw material covering the ejector tube 3, thereby tightening the raw material during the hot baking process to ensure that the appearance is intact and wrinkle-free after cooling. Moreover, when the external force is removed, the waste material can be automatically ejected by the restoring force of the spring 5, which greatly saves the material picking time and improves the production efficiency.

[0034] Example 2: This embodiment provides a hanging pin for automobile roof molding, the hanging pin including a fixed base 1, a shell 2, a top tube 3, a hanging pin 4, and a spring 5.

[0035] In this embodiment, the fixed base 1 is mounted on the mold. The fixed base 1 includes a base body 1.1 and an annular mounting portion 1.2 disposed on the base body 1.1. Both the base body 1.1 and the annular mounting portion 1.2 have threads on their outer walls. In this embodiment, the outer shell 2 is threadedly connected to the annular mounting portion 1.2 of the fixed base 1. The base body 1.1, outer shell 2, ejector tube 3, and hanging pin 4 are all coaxially arranged. A first through hole 2.1 is also provided on the top of the outer shell 2.

[0036] In this embodiment, the bottom of the top material tube 3 is located inside the outer casing 2, and the tube body of the top material tube 3 extends out through the through hole 2.1 of the outer casing 2. The top of the top material tube 3 has a second through hole 3.1, the diameter of which is larger than the maximum outer diameter of the hanging pin 4, and the second through hole 3.1 is concentrically arranged with the first through hole 2.1 of the outer casing 2. The bottom of the top material tube 3 has a limiting retaining ring 3.2, the maximum outer diameter of which is larger than the diameter of the first through hole 2.1, that is, the bottom of the top material tube 3 is always limited within the cavity of the outer casing 2.

[0037] The hanging pin 4 in this embodiment includes a hanging pin body 4.1 and a hanging pin tip 4.2, which are integrally connected. The hanging pin body 4.1 has a cylindrical structure and is fixedly installed in the center of the fixed base plate 1, and the hanging pin body 4.1 extends through the first through hole 2.1.

[0038] In this embodiment, the spring 5 is disposed inside the outer casing 2 and sleeved on the outside of the hanging pin 3. The bottom of the spring 5 abuts against the annular area formed by the annular mounting part 1.2, and the top of the spring 5 abuts against the bottom of the top material tube 3. It can be compressed when pressure is applied to the top material tube 3 from the outside, and provides restoring force when the external force is removed.

[0039] In this embodiment, the top of the hanging pin 4 can pass through the first through hole 2.1 of the outer shell 2 and the second through hole 3.1 of the top material tube 3. Specifically, the hanging pin tip 4.2 of the hanging pin 4 does not pass through the second through hole 3.1 in its natural state, but passes through the second through hole 3.1 under the action of external pressure on the top material tube 3.

[0040] Example 3: This embodiment provides a car roof processing mold, wherein the four corners of the waste area of ​​the processing mold are equipped with the car roof pressing mold hanging pins described in Embodiment 2.

[0041] The process of using the processing mold in this embodiment is as follows: Drill holes at the four corners of the waste area of ​​the processing mold according to the size of the hanging pin fixing base 1, and install the assembled hanging pin on the mold through the thread of the fixing base 1.

[0042] When the heated material is placed on the mold, it covers the ejector tube 3 of the hanging needle. Under normal conditions, the tip 4.2 of the hanging needle 4 will not protrude from the second through hole 3.1 and will not pierce the material. When the press is pressed down, the pressure is applied to the material, which in turn presses down the ejector tube 3. The tip 4.2 of the hanging needle 4 will then pierce the material, and the material will be tightened by multiple hanging needles, thus achieving the hanging operation.

[0043] After the car roof is pressed, the pressure is removed, and the elastic force of the spring 5 pushes the top material tube 3, causing the waste material to be pushed out by the top material tube 3. There is no need for manual removal of the waste material from the hanging needle, saving material removal time and thus improving production efficiency.

[0044] The above description of the embodiments is provided to enable those skilled in the art to understand and use the utility model. It will be apparent to those skilled in the art that various modifications can be easily made to these embodiments, and the general principles described herein can be applied to other embodiments without inventive effort. Therefore, the present utility model is not limited to the above embodiments, and any improvements and modifications made by those skilled in the art based on the disclosure of the present utility model without departing from its scope should be within the protection scope of the present utility model.

Claims

1. A material hanging pin for automotive roof molding, characterized in that, The material hanging needle includes: The fixed base (1) is installed on the mold; The outer shell (2) is threadedly connected to the fixed chassis (1); a first through hole (2.1) is provided on the top of the outer shell (2). Top material tube (3); the bottom of the top material tube (3) is located inside the outer shell (2), the tube body of the top material tube (3) passes through the through hole (2.1) of the outer shell (2), and the top of the top material tube (3) is provided with a second through hole (3.1). Hanging pin (4); the bottom of the hanging pin (4) is mounted on the fixed base plate (1), and the top can pass through the first through hole (2.1) of the outer shell (2) and the second through hole (3.1) of the top material tube (3); A spring (5) is located inside the outer casing (2) and sleeved on the outside of the hanging pin (4); the spring (5) abuts against the bottom of the top material tube (3).

2. The hanging pin for automotive roof molding according to claim 1, characterized in that, The fixed chassis (1) includes a chassis body (1.1) and an annular mounting part (1.2) provided on the chassis body (1.1). The outer walls of the chassis body (1.1) and the annular mounting part (1.2) are both provided with threads.

3. The material hanging pin for automobile roof molding according to claim 2, characterized in that, The outer shell (2) is threadedly connected to the annular mounting part (1.2) of the fixed chassis (1); The bottom of the spring (5) is installed within the annular area enclosed by the annular mounting part (1.2).

4. The material hanging pin for automobile roof molding according to claim 2, characterized in that, The chassis body (1.1), outer shell (2), top material tube (3), and hanging pin (4) are all coaxially arranged; The first through hole (2.1) of the outer shell (2) is concentrically arranged with the second through hole (3.1) of the top material tube (3).

5. The material hanging pin for automobile roof molding according to claim 1, characterized in that, The bottom of the top material tube (3) is provided with a limiting ring (3.2), and the maximum outer diameter of the limiting ring (3.2) is greater than the diameter of the first through hole (2.1).

6. The hanging pin for automotive roof molding according to claim 1, characterized in that, The diameter of the second through hole (3.1) is greater than the maximum outer diameter of the hanging needle (4).

7. The hanging pin for automobile roof molding according to claim 1, characterized in that, The hanging needle (4) includes a hanging needle body (4.1) and a hanging needle tip (4.2). The main body (4.1) of the hanging needle is cylindrical, and the main body (4.1) of the hanging needle is integrally connected with the tip (4.2).

8. The material hanging pin for automobile roof molding according to claim 7, characterized in that, The hanging pin body (4.1) extends through the first through hole (2.1); The tip of the hanging needle (4.2) does not protrude from the second through hole (3.1) in its natural state, but protrudes from the second through hole (3.1) under the action of external pressure on the top material tube (3).

9. A mold, characterized in that, Includes several hanging pins for automobile roof molding as described in any one of claims 1-8.

10. The mold according to claim 9, characterized in that, The material hanging pins are installed at the four corners of the mold waste area.

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