Core-pulling mechanism of injection mold for automotive trim panel

Abstract

The utility model discloses a core-pulling mechanism of an injection mold for an automotive trim panel, which relates to the technical field of molds and comprises a core-pulling air cylinder, a core-pulling rod connected onto the core-pulling air cylinder, a core-pulling slide block fixedly mounted at the tail end of the core-pulling rod, a lubricating oil groove formed in the core-pulling rod, an ejector block arranged in the lubricating oil groove, and an oil storage mechanism arranged on the core-pulling air cylinder. The oil storage mechanism comprises an oil storage tank installed on the core-pulling air cylinder, a piston plate is movably installed in the oil storage tank, a first spring is arranged on one side of the piston plate, an oil inlet and an oil outlet are fixedly formed in the oil storage tank, a one-way valve is arranged in the oil inlet, an oil conveying pipe is connected to the oil outlet, and a lubricating mechanism is arranged above the lubricating oil groove. According to the core-pulling mechanism of the injection mold for the automotive trim panel, the oil storage mechanism and the lubricating mechanism are matched for use, so that lubricating oil can be attached to the core-pulling rod, and the friction force borne by the core-pulling rod can be reduced in the forward and backward movement process of the core-pulling rod, so that the abrasion speed of the core-pulling rod is reduced, and the service life of the core-pulling rod is prolonged.

Description

Technical Field

[0001] The utility model relates to the technical field of molds, in particular to a core-pulling mechanism of an injection mold for an automobile interior trim panel. Background Art

[0002] As one of the main components of a car, the appearance and quality of automotive interior panels are extremely important. These panels have side ears and openings on their sides. During the production process, conventional automotive interior panel injection molds typically use ejectors, inclined ejectors, or complex core-pulling mechanisms to eject the product after the mold is opened. However, these ejection methods can easily cause the side ears and openings to deform, compromising product quality.

[0003] Publication No. CN211891800U discloses a core-pulling mechanism of an injection mold for an automobile interior panel, the core-pulling mechanism comprising a core-pulling slider, an inclined core-pulling rod and a core-pulling cylinder, the core-pulling slider being slidable left and right in a slide groove provided on the core, the inclined core-pulling rod being slidable front and back in the slide groove and the inclined core-pulling rod being tilted from left to right and rearward, a guide oblique opening adapted for the inclined core-pulling rod being provided through the core-pulling slider, the inner side of the core-pulling slider being provided with a first molding portion for molding a side ear panel of an automobile interior panel, the inner end of the inclined core-pulling rod being provided with a second molding portion for molding a side ear panel of an automobile interior panel and an opening on the side ear panel, the core-pulling cylinder being provided on the outer side of the core and being transmission-connected to the core-pulling slider; the above-mentioned problems can be solved.

[0004] The above device uses a core pulling cylinder to drive the core pulling slider to move back and forth, thereby achieving the end of the core pulling. However, the core pulling rod will also move back and forth during the back and forth movement of the core pulling slider. During the back and forth movement of the core pulling rod, friction will be generated with the mold. After long-term use, the core pulling rod will be worn and damaged, and its service life is short. Summary of the Invention

[0005] The utility model aims to provide a core pulling mechanism for an injection mold of an automobile interior trim panel, so as to solve the problem of short service life of a core pulling rod in the prior art.

[0006] To achieve the above-mentioned objectives, the utility model provides the following technical solutions: a core-pulling mechanism of an injection mold for an automobile interior trim panel comprises a core-pulling cylinder, the core-pulling cylinder is connected to a core-pulling rod, the end of the core-pulling rod is fixedly mounted with a core-pulling slider, the core-pulling rod is provided with a lubricating oil groove, a top block is provided in the lubricating oil groove, the core-pulling cylinder is provided with an oil storage mechanism, the oil storage mechanism comprises an oil storage tank mounted on the core-pulling cylinder, a piston plate is movably mounted in the oil storage tank, a first spring is provided on one side of the piston plate, an oil inlet and an oil outlet are fixedly mounted on the oil storage tank, a one-way valve is provided in the oil inlet, an oil pipeline is connected to the oil outlet, a lubricating mechanism is provided above the lubricating oil groove, the lubricating mechanism comprises an oil filling nozzle fixedly mounted above the lubricating oil groove, a sealing cover is connected to the upper end of the oil filling nozzle, a connecting nozzle is provided on the sealing cover, a sealing bead is movably mounted on the bottom of the oil filling nozzle, a second spring is provided above the sealing bead, a filter element is provided in the oil filling nozzle, and the filter element can filter the lubricating oil.

[0007] Preferably, a positioning seat is provided on the oil storage tank, and the oil storage tank is installed on the core-pulling cylinder through the positioning seat, and the positioning seat can fix the oil storage tank.

[0008] Preferably, the one-way valve in the oil inlet only allows the lubricating oil to enter the oil storage tank through the oil inlet, and the one-way valve can prevent the lubricating oil in the oil storage tank from being discharged through the oil inlet.

[0009] Preferably, one end of the first spring is connected to the piston plate, and the other end of the first spring is connected to one end of the oil storage tank. One end of the oil pipe is connected to the oil storage tank, and the other end of the oil pipe is connected to the oil filling nozzle. The oil pipe can transport lubricating oil to the oil filling nozzle.

[0010] Preferably, a mounting seat is provided on the oil filling nozzle, and the oil filling nozzle is installed above the lubricating oil tank through the mounting seat.

[0011] Preferably, the upper end of the oil filling nozzle is provided with a thread, and the sealing cover is connected to the oil filling nozzle via the thread.

[0012] Preferably, the oil delivery pipe is connected to the sealing cover through a connecting nozzle, one end of the second spring is connected to the sealing bead, and the other end of the second spring is connected to the filter element. The sealing bead and the top block are aligned front to back in the horizontal direction. The sealing bead is restricted to the bottom of the oil filling nozzle by the second spring, and the second spring can provide elastic force for the sealing bead.

[0013] Compared with the prior art, the beneficial effects of the present invention are:

[0014] 1. In the present application, when the core pulling rod moves back and forth, it will drive the top block in the lubricating oil tank to move back and forth. When the top block moves back and forth, it will contact the sealing bead. When the top block contacts the sealing bead, it will lift the sealing bead, causing the lubricating oil to drip into the lubricating oil tank, so that the lubricating oil adheres to the core pulling rod. The friction force on the core pulling rod during the forward and backward movement can be reduced, thereby reducing the wear rate of the core pulling rod, and the filter element in the oil filling nozzle can filter the lubricating oil.

[0015] 2. In this application, lubricating oil can be injected into the oil tank through the oil inlet. After the lubricating oil is injected into the oil tank, the first spring will be compressed. The compressed first spring will provide elastic force for the piston plate, so that the piston plate has a tendency to move forward. When the piston plate moves forward, the lubricating oil will be squeezed into the oil pipe. The lubricating oil entering the oil pipe will be transported to the oil filling nozzle to supply oil to the oil filling nozzle. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 It is a schematic diagram of the overall structure of the utility model;

[0017] Figure 2 It is a schematic diagram of the local structure of the utility model;

[0018] Figure 3 This is a schematic diagram of the oil storage mechanism of the utility model;

[0019] Figure 4 This is a schematic diagram of the lubrication mechanism of the present utility model.

[0020] Numbers in the figure: 1. Core-pulling cylinder; 2. Core-pulling rod; 3. Core-pulling slider; 4. Lubricating oil tank; 5. Top block; 6. Oil storage mechanism; 601. Oil storage tank; 602. First spring; 603. Positioning seat; 604. Piston plate; 605. Oil inlet; 606. One-way valve; 607. Oil outlet; 608. Oil pipe; 7. Lubricating mechanism; 701. Sealing cover; 702. Connecting nozzle; 703. Oil filling nozzle; 704. Filter element; 705. Second spring; 706. Sealing bead; 707. Mounting seat. DETAILED DESCRIPTION

[0021] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the embodiments described are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0022] like Figure 1 and Figure 2As shown, the utility model provides a technical solution of the core pulling mechanism of the injection mold of the automobile interior decoration panel, including a core pulling cylinder 1, a core pulling rod 2 is connected to the core pulling cylinder 1, a core pulling slider 3 is fixedly installed at the end of the core pulling rod 2, a lubricating oil groove 4 is opened on the core pulling rod 2, a top block 5 is provided in the lubricating oil groove 4, an oil storage mechanism 6 is provided on the core pulling cylinder 1, and a lubricating mechanism 7 is provided above the lubricating oil groove 4. Through the coordinated use of the oil storage mechanism 6 and the lubricating mechanism 7, lubricating oil can be attached to the core pulling rod, and the friction force on the core pulling rod 2 can be reduced during the forward and backward movement of the core pulling rod, thereby reducing the wear rate of the core pulling rod 2 and extending the service life of the core pulling rod 2.

[0023] like Figure 2 and Figure 3 As shown, the oil storage mechanism 6 includes an oil storage tank 601 installed on the core-pulling cylinder 1, a piston plate 604 is movably installed in the oil storage tank 601, a first spring 602 is provided on one side of the piston plate 604, an oil inlet 605 and an oil outlet 607 are fixedly installed on the oil storage tank 601, a one-way valve 606 is provided in the oil inlet 605, an oil pipeline 608 is connected to the oil outlet 607, a positioning seat 603 is provided on the oil storage tank 601, the oil storage tank 601 is installed on the core-pulling cylinder 1 through the positioning seat 603, and the one-way valve 606 in the oil inlet 605 only allows lubricating oil to enter the oil storage tank 601 through the oil inlet 605.

[0024] Specifically, lubricating oil can be injected into the oil tank 601 through the oil inlet 605. After the lubricating oil is injected into the oil tank 601, the first spring 602 will be compressed. The compressed first spring 602 will provide elastic force for the piston plate 604, so that the piston plate 604 has a tendency to move forward. When the piston plate 604 moves forward, the lubricating oil will be squeezed into the oil pipe 608. The lubricating oil entering the oil pipe 608 will be transported to the oil nozzle 703 to supply oil to the oil nozzle 703.

[0025] like Figure 2 and Figure 4 As shown, the lubrication mechanism 7 includes an oiling nozzle 703 fixedly mounted above the lubricating oil tank 4, the upper end of the oiling nozzle 703 is connected to a sealing cover 701, the sealing cover 701 is provided with a connecting nozzle 702, a sealing bead 706 is movably mounted on the bottom of the oiling nozzle 703, a second spring 705 is provided above the sealing bead 706, a filter element 704 is provided in the oiling nozzle 703, a mounting seat 707 is provided on the oiling nozzle 703, and the oiling nozzle 703 is mounted above the lubricating oil tank 4 through the mounting seat 707.

[0026] Specifically, when the core pulling rod 2 moves back and forth, it will drive the top block 5 in the lubricating oil groove 4 to move back and forth. When the top block 5 moves back and forth, it will contact the sealing bead 706. When the top block 5 contacts the sealing bead 706, it will lift the sealing bead 706, causing the lubricating oil to drip into the lubricating oil groove 4, so that the lubricating oil adheres to the core pulling rod. The friction force on the core pulling rod 2 during the back and forth movement can be reduced, thereby reducing the wear rate of the core pulling rod 2, and the filter element 704 in the oiling nozzle 703 can filter the lubricating oil.

[0027] Working principle: When in use, lubricating oil can be injected into the oil tank 601 through the oil inlet 605. After the lubricating oil is injected into the oil tank 601, the first spring 602 will be compressed. The compressed first spring 602 will provide elastic force for the piston plate 604, so that the piston plate 604 has a tendency to move forward. When the piston plate 604 moves forward, the lubricating oil will be squeezed into the oil pipe 608. The lubricating oil entering the oil pipe 608 will be transported to the oil injection nozzle 703. The core pulling cylinder 1 can drive the core pulling rod 2 to move forward and backward. During the movement of the core pulling rod 2 It will drive the core pulling slider 3 to move back and forth. After the core pulling slider 3 moves back and forth, it will drive the top block 5 in the lubricating oil groove 4 to move back and forth. When the top block 5 moves back and forth, it will contact the sealing bead 706. When the top block 5 contacts the sealing bead 706, the sealing bead 706 will be lifted up. After the top block 5 lifts the sealing bead 706, the lubricating oil in the oil filling nozzle 703 will drip into the lubricating oil groove 4, so that the lubricating oil adheres to the core pulling rod. The friction force on the core pulling rod 2 can be reduced during the back and forth movement, thereby reducing the wear rate of the core pulling rod 2 and extending the service life of the core pulling rod 2.

[0028] It will be apparent to those skilled in the art that the present invention is not limited to the details of the exemplary embodiments described above and that the present invention can be implemented in other specific forms without departing from the spirit or essential characteristics of the present invention. Therefore, the embodiments should be considered in all respects as illustrative and non-restrictive, and the scope of the present invention is defined by the appended claims, not the foregoing description, and all variations within the meaning and range of equivalents of the claims are intended to be encompassed within the present invention. Any reference sign in a claim should not be construed as limiting the claim to which it relates.

Claims

1. A core-pulling mechanism for an injection mold of an automobile interior trim panel, comprising a core-pulling cylinder (1), a core-pulling rod (2) connected to the core-pulling cylinder (1), a core-pulling slider (3) fixedly mounted at the end of the core-pulling rod (2), and characterized in that: The core pulling rod (2) is provided with a lubricating oil groove (4), a top block (5) is provided in the lubricating oil groove (4), an oil storage mechanism (6) is provided on the core pulling cylinder (1), the oil storage mechanism (6) comprises an oil storage tank (601) mounted on the core pulling cylinder (1), a piston plate (604) is movably mounted in the oil storage tank (601), a first spring (602) is provided on one side of the piston plate (604), an oil inlet (605) and an oil outlet (607) are fixedly mounted on the oil storage tank (601), a one-way valve (606) is provided in the oil inlet (605), The oil outlet (607) is connected to an oil delivery pipe (608), a lubricating mechanism (7) is provided above the lubricating oil tank (4), the lubricating mechanism (7) comprises an oiling nozzle (703) fixedly mounted above the lubricating oil tank (4), the upper end of the oiling nozzle (703) is connected to a sealing cover (701), the sealing cover (701) is provided with a connecting nozzle (702), a sealing bead (706) is movably mounted at the bottom of the oiling nozzle (703), a second spring (705) is provided above the sealing bead (706), and a filter element (704) is provided in the oiling nozzle (703).

2. The core-pulling mechanism of the automobile interior trim injection mold according to claim 1, characterized in that: A positioning seat (603) is provided on the oil storage tank (601), and the oil storage tank (601) is mounted on the core-pulling cylinder (1) via the positioning seat (603).

3. The core-pulling mechanism of the automobile interior trim injection mold according to claim 2, characterized in that: The one-way valve (606) in the oil inlet (605) only allows lubricating oil to enter the oil storage tank (601) through the oil inlet (605).

4. The core-pulling mechanism of the automobile interior trim injection mold according to claim 3, characterized in that: One end of the first spring (602) is connected to the piston plate (604), and the other end of the first spring (602) is connected to one end of the oil storage tank (601). One end of the oil delivery pipe (608) is connected to the oil storage tank (601), and the other end of the oil delivery pipe (608) is connected to the oil injection nozzle (703).

5. The core-pulling mechanism of the automobile interior trim injection mold according to claim 4, characterized in that: A mounting seat (707) is provided on the oiling nozzle (703), and the oiling nozzle (703) is mounted above the lubricating oil tank (4) via the mounting seat (707).

6. The core-pulling mechanism of the automobile interior trim injection mold according to claim 1, characterized in that: The upper end of the oiling nozzle (703) is provided with a thread, and the sealing cover (701) is connected to the oiling nozzle (703) via the thread.

7. The core-pulling mechanism of the automobile interior trim injection mold according to claim 1, characterized in that: The oil delivery pipe (608) is connected to the sealing cover (701) through the connecting nozzle (702), one end of the second spring (705) is connected to the sealing bead (706), and the other end of the second spring (705) is connected to the filter element (704). The sealing bead (706) and the top block (5) are aligned front to back in the horizontal direction, and the sealing bead (706) is restricted to the bottom of the oil filling nozzle (703) by the second spring (705).

Images