Structure for preventing long and thin mold core from being broken

Abstract

The utility model discloses a structure for preventing a slender mold core from being broken, which relates to the field of molds and comprises a lower mold, an injection molding groove is formed in the left portion of the upper end of the lower mold, two guide grooves which are symmetrically distributed front and back are formed in the middle of the upper end of the lower mold, and a rectangular groove is formed in the right portion of the upper end of the lower mold. And mold core bodies capable of sliding left and right are arranged in the two guide grooves, a hollow block is arranged between the front inner wall and the rear inner wall of the rectangular groove, an air cylinder is installed on the right portion of the lower wall of the hollow block, a rotating component is arranged in the hollow block, and the two mold core bodies extend into the hollow block. According to the utility model, the mold core main body can be driven to rotate by arranging the rotating part, and the concentration of stress in the mold core main body can be effectively reduced by driving the mold core main body to rotate and separate, so that the risk of breakage is reduced, the integrity and stability of the mold core main body are favorably kept, and the subsequent maintenance and replacement of the mold core main body are reduced; and the use cost is reduced.

Description

Technical Field

[0001] The utility model relates to the field of molds, in particular to a structure for preventing a slender core from breaking. Background Art

[0002] The slender core in the mold is a component used to form internal cavities or complex internal structures during the injection molding or die casting process. It is usually made of high-strength, wear-resistant, and tough materials, such as engineering plastics, metal materials, or composite materials. The slender core is usually located inside the mold, fixed in the mold by a core rod or other supporting structure, and withstands the effects of pressure and temperature during the molding process to ensure the accuracy and integrity of the molded parts. They play a key role in the injection molding or die casting process and can effectively achieve the internal structure and shape requirements of the product.

[0003] The prior art (Announcement No.: CN210820772U) discloses an ultra-slender core cooling mechanism, which includes a core, a nozzle and a cooling system. The core is provided with a blind hole along its length direction. One end of the nozzle is inserted into the blind hole, and there is a distance between the end and the bottom of the blind hole. A cavity is formed between the tube wall and the hole wall of the blind hole; the other end of the nozzle is connected to a water inlet pipeline provided in the cooling system, and the cavity is connected to a water outlet pipeline provided in the cooling system.

[0004] Although the above patent solves the problem that the existing cooling method cannot meet the requirements of fast and uniform cooling of ultra-slender cores, it has the following disadvantages: the slender core has low toughness. When in use, the slender core is usually subjected to greater stress inside the mold, especially during the core pulling process, and is prone to breakage, requiring staff to repair and replace it, which increases the cost of use. For this reason, we propose a structure to prevent the slender core from breaking. Utility Model Content

[0005] The main purpose of the utility model is to provide a structure for preventing a slender core from breaking, which can effectively solve the problems in the background technology.

[0006] In order to achieve the above purpose, the technical solution adopted by the utility model is:

[0007] A structure for preventing a slender core from breaking comprises a lower mold, wherein an injection groove is provided at the left portion of the upper end of the lower mold, two guide grooves symmetrically distributed frontward and rearward are provided at the middle portion of the upper end of the lower mold, a rectangular groove is provided at the right portion of the upper end of the lower mold, a core body that can slide leftward and rightward is provided in each of the two guide grooves, a hollow block is provided between the front inner wall and the rear inner wall of the rectangular groove, a cylinder is installed at the right portion of the lower wall of the hollow block, a rotating component is provided in the hollow block, and the two core bodies extend into the hollow block.

[0008] Preferably, the rotating component includes a motor, which is mounted on the rear inner wall of the hollow block, a worm is fixedly connected to the output end of the motor, a front end of the worm is movably connected to the front inner wall of the hollow block, and the worm is meshingly connected to two worm wheels.

[0009] Preferably, the rear end of the hollow block is interspersed with two support bearings that are symmetrically distributed front and back, and the right ends of the two core bodies extend into the support bearings and are fixedly connected to the inner walls of the support bearings.

[0010] Preferably, the two worm gears are fixedly sleeved in the two core bodies respectively.

[0011] Preferably, the core body comprises an aluminum alloy layer, the outer surface of the aluminum alloy layer is wrapped with a carbon fiber cloth layer, the outer side surface of the carbon fiber cloth layer is provided with a heat insulation layer, and the outer side surface of the heat insulation layer is provided with a titanium alloy layer.

[0012] Preferably, the output end of the cylinder is fixedly connected to the right end of the hollow block, and sliding blocks are provided at the front and rear ends of the hollow block.

[0013] Preferably, the front wall and the rear wall of the rectangular groove are both provided with sliding grooves, and the two sliding blocks are respectively located in the two sliding grooves.

[0014] Compared with the prior art, the utility model has the following beneficial effects:

[0015] 1. By setting a rotating component to drive the core body to rotate, when demoulding is required, the motor is controlled to drive the worm to rotate, the worm drives the worm wheel to rotate, and the worm wheel drives the core body to rotate. Then the cylinder is controlled to drive the core body away from the injection groove. By driving the core body to rotate and disengage, the concentration of stress on the core body can be effectively reduced, thereby reducing the risk of breakage, and helping to maintain the integrity and stability of the core body, reducing the subsequent maintenance and replacement of the core body, and reducing the cost of use;

[0016] 2. By setting the titanium alloy layer, good surface protection can be provided for the core body. The titanium alloy layer has high strength and corrosion resistance, which can prevent the external environment from eroding and damaging the slender core. The carbon fiber cloth layer has the characteristics of light weight and high strength, which can increase the rigidity and stability of the core body, while reducing its weight and improving its use efficiency. The aluminum alloy layer can enhance the structural strength and stability of the core body, as well as effectively conduct heat and improve the heat dissipation effect, thereby reducing the temperature and stress of the core body during use and extending its service life. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 It is a schematic diagram of the entire structure proposed in this embodiment;

[0018] Figure 2 Schematic diagram of the structure of the hollow block in this embodiment;

[0019] Figure 3 Schematic diagram of the structure of the rotating component in this embodiment;

[0020] Figure 4 Schematic diagram of the structure of the core body in this embodiment.

[0021] In the figure: 1. lower mold; 2. injection groove; 3. guide groove; 4. core body; 5. hollow block; 6. rectangular groove; 7. slide groove; 8. cylinder; 9. slider; 10. rotating part; 11. support bearing; 101. motor; 102. worm; 103. worm wheel; 41. titanium alloy layer; 42. heat insulation layer; 43. carbon fiber cloth layer; 44. aluminum alloy layer. DETAILED DESCRIPTION

[0022] In order to make the technical means, creative features, objectives and effects achieved by the present invention easy to understand, the present invention is further described below in conjunction with specific implementation methods.

[0023] In the description of the present invention, it should be noted that the terms "upper", "lower", "inner", "outer", "front end", "rear end", "two ends", "one end", "the other end" and the like indicate positions or positional relationships based on the positions or positional relationships shown in the drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operate in a specific orientation, and therefore cannot be understood as a limitation on the present invention. In addition, the terms "first" and "second" are used for descriptive purposes only and cannot be understood as indicating or implying relative importance.

[0024] In the description of the present invention, it should be noted that, unless otherwise clearly specified and limited, the terms "installed", "provided with", "connected", etc. should be understood in a broad sense. For example, "connected" can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be an indirect connection through an intermediate medium, or it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0025] like Figure 1-Figure 4As shown, a structure for preventing a slender core from breaking comprises a lower mold 1, an injection groove 2 is provided at the left upper end of the lower mold 1, two guide grooves 3 symmetrically distributed front and back are provided at the middle upper end of the lower mold 1, a rectangular groove 6 is provided at the right upper end of the lower mold 1, a core body 4 slidable left and right is provided in the two guide grooves 3, a hollow block 5 is provided between the front inner wall and the rear inner wall of the rectangular groove 6, a cylinder 8 is installed at the right lower wall of the hollow block 5, a rotating component 10 is provided in the hollow block 5, and the two core bodies 4 extend into the hollow block 5.

[0026] In order to effectively reduce the concentration of stress on the core body 4, the core body 4 can be driven to rotate by the rotating component 10. The specific structure is: the rotating component 10 includes a motor 101, and the motor 101 is installed on the rear inner wall of the hollow block 5. The output end of the motor 101 is fixedly connected to a worm 102, and the front end of the worm 102 is movably connected to the front inner wall of the hollow block 5. The worm 102 is meshingly connected to two worm wheels 103. By driving the slender core body 4 to rotate and disengage, the concentration of stress on the core body 4 can be effectively reduced, thereby reducing the risk of breakage, and helping to maintain the integrity and stability of the core body 4, reducing subsequent maintenance and replacement of the core body 4, and reducing the cost of use.

[0027] The rear end of the hollow block 5 is interspersed with two support bearings 11 symmetrically distributed front and back. The right ends of the two core bodies 4 extend into the support bearings 11 and are fixedly connected to the inner walls of the support bearings 11. The support bearings 11 are used to support the core body 4 to rotate.

[0028] In order to drive the core body 4 to rotate, the two worm gears 103 are fixedly sleeved in the two core bodies 4 respectively.

[0029] The core body 4 includes an aluminum alloy layer 44, the outer surface of the aluminum alloy layer 44 is wrapped with a carbon fiber cloth layer 43, the carbon fiber cloth layer 43 is wrapped on the aluminum alloy layer 44 in two layers, the outer side of the carbon fiber cloth layer 43 is provided with a heat insulation layer 42, and the outer side of the heat insulation layer 42 is provided with a titanium alloy layer 41. The aluminum alloy layer 44 is used to enhance the structural strength and stability of the core body 4, and effectively conduct heat to improve the heat dissipation effect, thereby reducing the temperature and stress of the core body 4 during use and extending its service life. The carbon fiber cloth layer 43 is used to increase the rigidity and stability of the core body 4, while reducing its weight and improving its use efficiency. The heat insulation layer 42 is used to reduce the heat transfer to the carbon fiber cloth layer 43 to ensure that the carbon fiber cloth layer 43 can be used normally. The titanium alloy layer 41 is used to provide good surface protection for the core body 4. The titanium alloy layer 41 has high strength and corrosion resistance to prevent the external environment from eroding and damaging the slender core.

[0030] The output end of the cylinder 8 is fixedly connected to the right end of the hollow block 5. Slide blocks 9 are provided at the front and rear ends of the hollow block 5. Slide blocks 7 are provided on the front and rear walls of the rectangular groove 6. Two slide blocks 9 are respectively located in the two slide blocks 7. The cylinder 8 is used to drive the hollow block 5 to move, and the slide blocks 9 are used to improve the stability of the movement of the hollow block 5.

[0031] The utility model proposes a structure for preventing the breakage of a slender core. During injection molding, the output end of the control cylinder 8 drives the hollow block 5 to move leftward, and the hollow block 5 drives the core body 4 to move leftward into the injection groove 2. During demoulding, the control motor 101 drives the worm 102 to rotate, the worm 102 drives the worm wheel 103 to rotate, and the worm wheel 103 drives the core body 4 to rotate. Then, the output end of the control cylinder 8 is shortened to drive the core body 4 away from the injection groove 2. By driving the core body 4 to rotate and disengage, the concentration of stress on the core body 4 can be effectively reduced, thereby reducing the risk of breakage.

[0032] The above shows and describes the basic principle and main features of the utility model and the advantages of the utility model. Those skilled in the art should understand that the utility model is not limited by the above embodiments. The above embodiments and descriptions are only for explaining the principle of the utility model. Without departing from the spirit and scope of the utility model, the utility model may have various changes and improvements, which fall within the scope of the utility model to be protected. The scope of protection claimed by the utility model is defined by the attached claims and their equivalents.

Claims

1. A structure for preventing a slender core from breaking, comprising a lower mold (1), characterized in that: The lower mold (1) is provided with an injection groove (2) at the left upper end, two guide grooves (3) symmetrically distributed frontward and rearward are provided at the middle upper end of the lower mold (1), and a rectangular groove (6) is provided at the right upper end of the lower mold (1). A core body (4) capable of sliding leftward and rightward is provided in each of the two guide grooves (3). A hollow block (5) is provided between the front inner wall and the rear inner wall of the rectangular groove (6). A cylinder (8) is installed at the right lower wall of the hollow block (5). A rotating component (10) is provided in the hollow block (5), and the two core bodies (4) extend into the hollow block (5).

2. A structure for preventing the elongated core from breaking according to claim 1, characterized in that: The rotating component (10) comprises a motor (101), the motor (101) is mounted on the rear inner wall of the hollow block (5), the output end of the motor (101) is fixedly connected to a worm (102), the front end of the worm (102) is movably connected to the front inner wall of the hollow block (5), and the worm (102) is meshingly connected to two worm wheels (103).

3. A structure for preventing the elongated core from breaking according to claim 1, characterized in that: The rear end of the hollow block (5) is interlaced with two support bearings (11) that are symmetrically distributed front and back, and the right ends of the two core bodies (4) extend into the support bearings (11) and are fixedly connected to the inner wall of the support bearings (11).

4. A structure for preventing the elongated core from breaking according to claim 2, characterized in that: The two worm wheels (103) are respectively fixedly sleeved in the two core bodies (4).

5. The structure for preventing the elongated core from breaking according to claim 1, characterized in that: The core body (4) comprises an aluminum alloy layer (44), the outer surface of the aluminum alloy layer (44) is wrapped with a carbon fiber cloth layer (43), the outer side surface of the carbon fiber cloth layer (43) is provided with a heat insulation layer (42), and the outer side surface of the heat insulation layer (42) is provided with a titanium alloy layer (41).

6. A structure for preventing the elongated core from breaking according to claim 1, characterized in that: The output end of the cylinder (8) is fixedly connected to the right end of the hollow block (5), and the front and rear ends of the hollow block (5) are both provided with sliders (9).

7. A structure for preventing the elongated core from breaking according to claim 6, characterized in that: The front wall and the rear wall of the rectangular groove (6) are both provided with a slide groove (7), and the two sliding blocks (9) are respectively located in the two slide grooves (7).

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