Concave hole core-pulling device of automobile headlamp injection mold

Abstract

The utility model provides a concave hole core-pulling device of an automobile headlamp injection mold, which belongs to the technical field of injection molds and comprises a base, a left track and a right track are fixed on the inner side and the outer side of the upper surface of the base respectively, sliders are slidably arranged on the left side and the right side of the tracks respectively, and core-pulling molds are fixedly arranged on the two sliders on the left side and the two sliders on the right side respectively. Supporting rods are fixedly arranged on the left and right sides of the upper surface of the base; through the arrangement of the core rod, the fixing disc and the sleeving spring, in the demolding process, the motor drives the rotating shaft to rotate, the rotating shaft drives the forward thread and the reverse thread to rotate, the two connecting frames move in the opposite directions, the connecting frames drive the core rod to move in the opposite directions, and core pulling is conducted; in the core pulling process, the two core pulling molds can be in a mold closing state through the elastic force of the sleeving springs, it is guaranteed that the automobile headlamp subjected to injection molding is stably located in the molds, and the automobile lamp shell subjected to injection molding is prevented from being damaged in the core pulling process.

Description

Technical Field

[0001] The utility model relates to the technical field of injection molds, in particular to a concave hole core pulling device of an injection mold for automobile headlights. Background Art

[0002] In the injection molding process, core pulling is a technology that extracts one or more blocks from the inside of the mold cavity to allow the molded part to have tubular objects or spatial structures such as holes, protrusions and pipes. This technology can enable the molded part to meet specific design requirements;

[0003] In the process of manufacturing automobile headlights, it is usually necessary to set multiple core pulling mechanisms on the injection mold to realize the side opening of the automobile lamp housing during injection molding;

[0004] For example, in the prior art, a Chinese patent with patent publication number CN215550608U discloses a core pulling mechanism for an injection mold of an automobile lamp shell, which converts an inclined hole on the automobile lamp shell into a straight hole, and then forms the required straight hole on the automobile lamp shell by closing the core pulling molds on both sides, and then the core pulling molds on both sides are pushed apart by a bidirectional cylinder to complete the core pulling.

[0005] The core pulling process and the demoulding process of the device are carried out simultaneously. Since the fixed hole core penetrates the automobile lamp shell after the injection molding of the automobile lamp shell is completed, the fixed hole core still penetrates the automobile lamp shell when the core pulling mold and the injection molded automobile lamp shell are just separated. The fixed hole core can not be pulled out from the lamp shell until the core pulling mold assembly is a certain distance away from the automobile lamp shell. There is friction between the fixed hole core and the injection molded automobile lamp shell. When the fixed hole core is separated from the automobile lamp shell, the core pulling mold has been separated from the lamp shell, resulting in the core pulling mold being unable to protect the injection molded lamp shell, which is easy to cause the automobile lamp shell to be damaged during the core pulling process of the fixed hole core, affecting the injection molding quality. Therefore, a concave hole core pulling device for an automobile headlight injection mold is designed to solve the above problem. Utility Model Content

[0006] The utility model aims to solve the problems existing in the above-mentioned background technology and proposes a concave core-pulling device for an injection mold of a car headlight.

[0007] The technical problem to be solved by the utility model is to provide an injection mold for automobile headlights and lamps, so as to solve the problem that the existing automobile lamp shell is easily damaged during the core pulling process.

[0008] The utility model provides a concave core-pulling device for an injection mold for a car headlight, comprising a base, a track, a slider, a core-pulling mold, a support rod, an upper mold and a core rod, left and right tracks are fixed on both inner and outer sides of the upper surface of the base, sliders are slidably arranged on the left and right sides of the track, core-pulling molds are fixedly arranged on two left sliders and two right sliders, support rods are fixedly arranged on the left and right sides of the upper surface of the base, an upper mold is fixedly arranged between the two support rods, an injection hole is opened in the center of the upper surface of the upper mold, core rods are penetrated on the side surfaces of the left and right core-pulling molds, a connecting frame is connected to the end of the core rod, a motor is installed on the left support rod, a rotating shaft is installed on the output end of the motor, a positive thread is arranged on the left side of the outer surface of the rotating shaft, and a reverse thread is arranged on the right side of the outer surface of the rotating shaft;

[0009] The core rod comprises a fixing ring and a sleeve spring. The fixing ring is fixedly arranged on the outer surface of the core rod, and the sleeve spring is fixedly arranged between the fixing ring and the core-pulling mold.

[0010] Preferably, the track is in the shape of an inverted "convex" character, and a sliding groove matching the track is provided at the bottom of the slider.

[0011] Preferably, the two core-pulling molds are located directly below the upper mold when they are in contact with each other.

[0012] Preferably, the rotating shaft passes through the bottom of the core-pulling mold, and the right end of the rotating shaft is rotatably disposed on the right support rod through a bearing.

[0013] Preferably, the motor is a forward and reverse motor, and the forward thread and reverse thread on the rotating shaft are respectively threadedly connected to the left and right connecting frames.

[0014] Preferably, a through hole matching the core rod is provided on the core-pulling die, and when the sleeve spring is in a naturally extended state, one end of the core rod inserted into the through hole is completely in the through hole.

[0015] Compared with the prior art, the utility model has at least the following beneficial effects:

[0016] 1. The utility model is provided with a core rod, a fixed plate and a sleeve spring. During the demoulding process, the motor drives the rotating shaft to rotate, and the rotating shaft drives the forward thread and the reverse thread to rotate, so that the two connecting frames move in opposite directions, and the connecting frames drive the core rod to move in opposite directions to perform core pulling. Moreover, since the sleeve spring is in a compressed state, the elastic force of the sleeve spring during the core pulling process can make the two core pulling molds in a mold closing state, ensuring that the injection molded automobile headlights are stably in the mold, and preventing the injection molded automobile lamp shells from being damaged during the core pulling process.

[0017] 2. The utility model can realize the core pulling process and the demoulding process in sequence through the rotation of the motor, thereby increasing work efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] In order to more clearly illustrate the specific implementation of the utility model or the technical solution in the prior art, the following is a brief introduction to the drawings required for the specific implementation or the prior art description. In all the drawings, similar elements or parts are generally identified by similar reference numerals. In the drawings, each element or part is not necessarily drawn according to the actual scale.

[0019] Figure 1 It is a three-dimensional schematic diagram of the overall structure of the utility model.

[0020] Figure 2 For this utility model Figure 1 A is an enlarged schematic diagram of the structure.

[0021] Figure 3 The utility model is a schematic diagram of the overall structure section Figure 1 .

[0022] Figure 4 The utility model is a schematic diagram of the overall structure section Figure 2 .

[0023] [reference numerals]

[0024] 1. Base; 2. Track; 3. Slider; 4. Core-pulling mold; 5. Support rod; 6. Upper mold; 601. Injection hole; 7. Core rod; 701. Fixed ring; 702. Socket spring; 8. Connecting frame; 9. Motor; 10. Rotating shaft; 1001. Forward thread; 1002. Reverse thread. DETAILED DESCRIPTION

[0025] Example:

[0026] like Figure 1-Figure 4 As shown, the embodiment of the utility model provides a concave core-pulling device for an injection mold for a car headlight, comprising a base 1, a track 2, a slider 3, a core-pulling mold 4, a support rod 5, an upper mold 6 and a core rod 7. Left and right tracks 2 are fixed on both inner and outer sides of the upper surface of the base 1, sliders 3 are slidably arranged on both left and right sides of the track 2, core-pulling molds 4 are fixedly arranged on the two left sliders 3 and the two right sliders 3, support rods 5 are fixedly arranged on the left and right sides of the upper surface of the base 1, an upper mold 6 is fixedly arranged between the two support rods 5, an injection hole 601 is opened in the center of the upper surface of the upper mold 6, core rods 7 are penetrated through the sides of the left and right core-pulling molds 4, and the ends of the core rods 7 are connected to a connecting frame 8, a motor 9 is installed on the left support rod 5, a rotating shaft 10 is installed on the output end of the motor 9, a positive thread 1001 is arranged on the left side of the outer surface of the rotating shaft 10, and a reverse thread 1002 is arranged on the right side of the outer surface of the rotating shaft 10;

[0027] The core rod 7 includes a fixing ring 701 and a sleeve spring 702 . The fixing ring 701 is fixedly arranged on the outer surface of the core rod 7 . The sleeve spring 702 is fixedly arranged between the fixing ring 701 and the core-pulling mold 4 .

[0028] In this embodiment, the track 2 is in the shape of an inverted "convex" character, and a sliding groove matching the track 2 is provided at the bottom of the slider 3 to ensure the stability of the slider 3 sliding on the track 2.

[0029] In this embodiment, the two core-pulling molds 4 are located directly below the upper mold 6 when in contact with each other, so as to facilitate mold closing between the two core-pulling molds 4 and the upper mold 6 .

[0030] In this embodiment, the rotating shaft 10 passes through the bottom of the core-pulling mold 4 , and the right end of the rotating shaft 10 is rotatably disposed on the right support rod 5 through a bearing to ensure the stability of the rotating shaft 10 .

[0031] In this embodiment, the motor 9 is a forward and reverse motor, and the forward thread 1001 and the reverse thread 1002 on the shaft 10 are respectively threadedly connected to the left and right connecting frames 8, so that the shaft 10 can drive the two connecting frames 8 to rotate in the first direction and the opposite direction.

[0032] In this embodiment, a through hole matching the core rod 7 is provided on the core pulling mold 4, and when the sleeve spring 702 is in a naturally extended state, one end of the core rod 7 inserted into the through hole is completely in the through hole, which facilitates the demolding process by first pulling the core and then demolding.

[0033] Working principle: During injection molding, the motor 9 is turned on, and the motor 9 drives the forward thread 1001 and the reverse thread 1002 on the rotating shaft 10 to rotate, so that the connecting frame 8 moves in relative directions. The connecting frame 8 pushes the two core-pulling molds 4 to move in relative directions through the core rod 7 and the sleeve spring 702 until the two core-pulling molds 4 contact each other and the core-pulling molds 4 are directly below the upper mold 6. The motor 9 continues to rotate, and the two connecting frames 8 continue to move in relative directions until the core rod 7 is lower than the upper mold 6, and the sleeve spring 702 is in a compressed state, the mold is closed, and then injection molding is performed into it through the injection hole 601;

[0034] After the injection molding is completed and cooled, the motor 9 is turned around, and the motor 9 drives the forward thread 1001 and the reverse thread 1002 to reverse, and the two connecting frames 8 move in opposite directions, and the connecting frame 8 drives the core rod 7 to move in opposite directions to perform core pulling. Since the sleeve spring 702 is in a compressed state, the elastic force of the sleeve spring 702 during the core pulling process can make the two core pulling molds 4 in a mold closing state, ensuring that the injection molded automobile headlight is stably in the mold, and preventing the injection molded automobile lamp shell from being damaged during the core pulling process;

[0035] The motor 9 continues to reverse, and the connecting frame 8 continues to move in the opposite direction, driving the core pulling rod 7 and the sleeve spring 702 to drive the two core pulling molds 4 to move in the opposite direction, completing the separation between the core pulling mold 4 and the upper mold 6, and achieving the demoulding effect.

[0036] The above are only preferred implementations of the utility model. It should be pointed out that for those skilled in the art, several modifications and improvements can be made without departing from the concept of the utility model. These should also be regarded as the protection scope of the utility model. These will not affect the effect of the implementation of the utility model and the practicality of the patent.

Claims

1. A concave core pulling device for an injection mold for a car headlight, characterized in that: The invention comprises a base (1), a track (2), a slider (3), a core-pulling mold (4), a support rod (5), an upper mold (6) and a core rod (7); left and right tracks (2) are fixed on both inner and outer sides of the upper surface of the base (1); sliders (3) are slidably arranged on both left and right sides of the track (2); the core-pulling mold (4) is fixedly arranged on the two left sliders (3) and the two right sliders (3); support rods (5) are fixedly arranged on both left and right sides of the upper surface of the base (1); and a core rod (7) is fixedly arranged between the two support rods (5). An upper mold (6), wherein an injection hole (601) is provided in the center of the upper surface of the upper mold (6), a core rod (7) is provided through the sides of the left and right core-pulling molds (4), and the ends of the core rod (7) are connected to a connecting frame (8), a motor (9) is installed on the left support rod (5), and a rotating shaft (10) is installed at the output end of the motor (9), and a positive thread (1001) is provided on the left side of the outer surface of the rotating shaft (10), and a reverse thread (1002) is provided on the right side of the outer surface of the rotating shaft (10); The core rod (7) comprises a fixing ring (701) and a sleeve spring (702); the fixing ring (701) is fixedly arranged on the outer surface of the core rod (7); and the sleeve spring (702) is fixedly arranged between the fixing ring (701) and the core-pulling mold (4).

2. The concave hole core pulling device of the injection mold for automobile headlights and lamps according to claim 1 is characterized in that: The track (2) is in the shape of an inverted "convex" character, and a sliding groove matching the track (2) is provided at the bottom of the slider (3).

3. The concave hole core pulling device of the injection mold for automobile headlights and lamps according to claim 2 is characterized in that: When the two core-pulling dies (4) are in contact with each other, they are located directly below the upper die (6).

4. The concave hole core pulling device of the injection mold for automobile headlights and lamps according to claim 3 is characterized in that: The rotating shaft (10) passes through the bottom of the core-pulling mold (4), and the right end of the rotating shaft (10) is rotatably arranged on the right support rod (5) through a bearing.

5. The concave hole core pulling device of the injection mold for automobile headlights and lamps according to claim 4 is characterized in that: The motor (9) is a forward and reverse motor, and the forward thread (1001) and the reverse thread (1002) on the rotating shaft (10) are respectively threadedly connected to the left and right connecting frames (8).

6. The concave hole core pulling device of the injection mold for automobile headlights and lamps according to claim 5 is characterized in that: The core-pulling die (4) is provided with a through hole matching the core rod (7), and when the sleeve spring (702) is in a naturally extended state, one end of the core rod (7) inserted into the through hole is completely inside the through hole.

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