WorldSID-50 dummy shank skin manufacturing device

Abstract

The utility model relates to a WorldSID-50 dummy shank skin manufacturing device. The WorldSID-50 dummy shank skin manufacturing device comprises a front mold, a rear mold, a shank mold core, a characteristic pin, a pin clamping device, a prying port gasket, a filling port cover plate and a bolt handle. The front mold and the rear mold jointly form a shank-shaped cavity wrapping the shank mold core, bolt handles are arranged on the left side and the right side of the front mold and the left side and the right side of the rear mold respectively to replace mold handles, parting surface prying openings are formed in the front side and the rear side of a parting surface of the mold, and prying opening base plates are arranged at the prying openings. Two groups of positioning guide sleeves are arranged on a parting surface of the front mold and the rear mold, a bolt hole is formed in the outer surface of the front mold, and a positioning hole is correspondingly formed in the right side of the shank mold core. The mold provided by the utility model is simple in structure, convenient to disassemble, high in working efficiency, convenient to demold and high in practicability.

Description

Technical Field

[0001] This utility model relates to the field of automotive safety testing, and in particular to a device for fabricating skin on the lower leg of a WorldSID-50 dummy. Background Technology

[0002] As living standards continue to improve, people have higher requirements for the safety performance of automobiles. Therefore, it is necessary to explore and develop higher-quality automobile safety testing equipment to provide more scientific test basis for the improvement and judgment of automobile safety. At present, the WorldSID-50 dummy has become an indispensable testing equipment for evaluating automobile crash safety.

[0003] In car crash tests, the dummy's skin, as a biomimetic material, is the dummy's first line of defense. The shape, material, and manufacturing process of the dummy's skin have a significant impact on the test results. To ensure that the dummy has realistic biomimetic characteristics, the dummy's lower leg skin is used to simulate the surface skin and muscle tissue of the human lower leg. The surface of the dummy's lower leg skin is made of PVC material of a certain thickness, with polyurethane foam wrapped inside. It must also have cavities and holes for assembly with other parts of the dummy. Therefore, the dummy's lower leg skin has a specific shape and structure.

[0004] CN216708074U discloses a mold for the skin of the left lower leg of a WorldSID-50 dummy. The filling port of this mold is not located at the highest point of the product, preventing maximum air removal during raw material pouring. This leads to incomplete filling or air bubbles in the mold cavity, affecting skin molding quality. Furthermore, this mold does not use the rear opening of the lower leg skin as the parting surface; instead, it uses a thin sheet mating with the curved surface of the mold cavity, making parts difficult to machine with high precision, prone to damage during use, and resulting in a short lifespan. To ensure the production quality of the WorldSID-50 dummy's lower leg skin and the lifespan of the mold, we need to independently develop a WorldSID-50 dummy lower leg skin manufacturing device that considers the shape and dimensions of the lower leg skin. This device will ensure a complete skin appearance, reduce air bubbles and defects, guarantee high mold structural strength, prevent damage during assembly, extend service life, facilitate demolding, and improve production efficiency. Utility Model Content

[0005] To address the problems in the existing technology, this utility model provides a device for manufacturing skin for the lower leg of a WorldSID-50 dummy. This utility model can produce a skin for the lower leg of a WorldSID-50 dummy that is easy to demold and has a high yield rate.

[0006] The objective of this utility model is achieved through the following technical solution: A device for fabricating skin for the lower leg of a WorldSID-50 dummy, comprising a front mold, a rear mold, a lower leg core, a feature pin, a locking pin, a pry plate, a sprue cover, and a bolt handle. The front mold and the rear mold together form a lower leg-shaped cavity that encloses the lower leg core. Bolts are provided on the left and right sides of the front mold and the rear mold, respectively, to replace mold handles. Pry plates are provided on the upper and lower sides of the mold parting surface, and pry plates are provided at the pry plates. A pouring hole is provided on the top of the front mold and the rear mold, and a sprue cover is provided on the top of the pouring hole. The lower end of the pouring hole communicates with the cavity. The sprue cover is fixed by two screws on the front mold and the rear mold, respectively. A vent hole is provided at the center of the top of the sprue cover. A pin hole is provided on the front mold, and a positioning hole is provided on the right side of the lower leg core, with a feature pin corresponding to the positioning hole.

[0007] Furthermore, a feature pin is provided between the front mold and the lower leg core; one end of each feature pin passes through the front mold and is detachably connected to the lower leg core, while the other end is fixed to the outside of the front mold by screws and locking pins.

[0008] Furthermore, a number of positioning holes and threaded holes are provided at intervals on the contact surfaces of the front mold and the rear mold. The front mold and the rear mold are positioned by positioning pins passing through the positioning holes and fixed by locking screws.

[0009] Furthermore, the pry bar is made of carbon steel and is embedded in the pry bar of the parting surface. The front surface of the pry bar is in contact with the front edge of the pry bar of the front mold parting surface, and the rear surface is in contact with the rear edge of the pry bar of the rear mold parting surface. It is fixed to the rear and front of the pry bar of the front mold and the rear mold parting surface respectively by locking screws.

[0010] Furthermore, the front mold and the rear mold are respectively provided with pouring holes, located on the front and rear sides of the skin partition on the calf core. The pouring port cover is fixed by two screws on the front mold and the rear mold respectively, and an exhaust hole is provided at the center of the top of the pouring port cover.

[0011] The left and right ends of the calf core are fitted into the grooves on the inner contact surfaces of the left and right ends of the front and rear molds. The left and right contact surfaces of the front and rear molds are symmetrical curved surfaces that fit together, and the outer sides are respectively provided with grooves that conform to the outer contour of the calf skin.

[0012] As can be seen from the above technical solutions, this utility model has the following advantages: (1) The mold structure provided by this utility model is simple. The wall thickness of the front mold and the rear mold is optimized. By adjusting the wall thickness of each part of the mold, unnecessary wall thickness is removed, while ensuring the structural strength of the mold, ensuring the mold performance, reducing weight, reducing labor intensity, and improving work flexibility; (2) The mold provided by this utility model includes a front mold and a rear mold. The parting surface is designed at the opening feature of the calf skin. The thin sheet formed by the opening feature of the calf skin is in cooperation with the two planes of the front mold and the rear mold, improving the efficiency of the mold. The mold strength and ease of operation are improved. The mold forming surface has no undercut surface, which makes it easy to demold the skin of the lower leg. The production process is simple and practical, and the service life of the mold is improved. (3) The mold provided by this utility model has pouring holes on the top of the front mold and the top of the rear mold respectively. The pouring hole is located at the thickest part of the product. The pouring hole is directly connected to the calf-shaped cavity. When pouring, the mold is placed horizontally so that the pouring hole is located at the high part of the calf-shaped cavity. When pouring raw materials, the air in the mold cavity can be discharged to the maximum extent, so that the poured skin raw materials can fully fill the mold, effectively reduce the defects on the surface of the product, and improve the overall quality of the skin of the lower leg. Attached Figure Description

[0013] Figure 1 This is an axonometric drawing of a WorldSID-50 dummy lower leg skin fabrication device according to this utility model.

[0014] Figure 2 This is a lower isometric view of a WorldSID-50 dummy lower leg skin fabrication device according to this utility model.

[0015] Figure 3 This is an exploded view of a WorldSID-50 dummy calf skin fabrication device according to this utility model.

[0016] Among them: 1-front mold, 2-rear mold, 3-small leg core, 4-feature pin, 5-clamping pin, 6-prying gasket, 7-filling port cover plate, 8-bolt handle. Detailed Implementation

[0017] To make the objectives, technical solutions, and advantages of this utility model clearer, the present utility model will be further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain this utility model and are not intended to limit this utility model.

[0018] Figure 1-3 As shown, this embodiment provides a WorldSID-50 dummy lower leg skin fabrication device, including a front mold 1, a rear mold 2, a lower leg core 3, a feature pin 4, a locking pin 5, a prying gasket 6, a filling port cover plate 7, and a bolt handle 8.

[0019] The front mold 1 and the rear mold 2 together form a leg-shaped cavity that encloses the leg core 3. Bolt handles 8 are provided at the front and rear of the front mold 1 and the rear mold 2 respectively. Parting surface pry holes are provided on the upper and lower sides of the mold parting surface, and pry hole shims 6 are provided at the pry holes.

[0020] The front mold 1 and the rear mold 2 are respectively provided with pouring holes at the top, and the top of the pouring hole is provided with a pouring port cover plate 7. The lower end of the pouring hole is connected to the cavity. The front mold 1 is provided with a pin hole, and a positioning hole is provided on the right side of the small leg core 3. A feature pin 4 is provided at the positioning hole.

[0021] A feature pin 4 is provided between the front mold 1 and the lower leg core 3. One end of the feature pin 4 passes through the front mold 1 and is detachably connected to the lower leg core 3. The other end is fixed to the outside of the front mold 1 by screws and locking pins 5.

[0022] Several positioning holes and threaded holes are provided at intervals on the contact surfaces of the front mold 1 and the rear mold 2. The front mold 1 and the rear mold 2 are positioned by positioning pins passing through the positioning holes and fixed by locking screws.

[0023] The pry plate 6 is made of carbon steel and is embedded in the pry opening of the parting surface. The front surface of the pry plate 6 is in contact with the front edge of the pry opening of the parting surface of the front mold 1, and the rear surface is in contact with the rear edge of the pry opening of the parting surface of the rear mold 2. It is fixed to the rear and front of the pry openings of the parting surface of the front mold 1 and the rear mold 2 respectively by locking screws.

[0024] A pouring hole is provided on the top of the front mold 1 and the rear mold 2 respectively, located on the front and rear sides of the skin partition on the calf core 3. The pouring port cover plate 7 is fixed by two screws on the front mold 1 and the rear mold 2 respectively. A vent hole is provided at the center of the top of the pouring port cover plate 7.

[0025] The left and right ends of the calf core 3 are fitted into the grooves on the inner contact surfaces of the left and right ends of the front mold 1 and the rear mold 2. The left and right contact surfaces of the front mold 1 and the rear mold 2 are symmetrical curved surfaces fitted together, and the outer sides are respectively provided with grooves that conform to the outer contour of the calf skin.

[0026] The assembly process of this utility model is as follows.

[0027] First, place the non-forming surfaces of the front mold 1 and the rear mold 2 flat on the ground. Install the bolt handles 8 on the left and right ends of the front mold 1 and the rear mold 2. Fix the pry plate 6 to the pry openings on the parting surfaces of the front mold 1 and the rear mold 2 with several screws. Tap several locating pins into the corresponding locating holes on the parting surfaces of the front mold 1 and the rear mold 2. Then, embed the calf core 3 into the left and right grooves of the rear mold 2 to fit tightly against the contact surface. Secure the front mold 1 to the rear mold 2 through the locating pins and locking screws. Insert one end of the feature pin 4 through the corresponding pin hole of the front mold 1 into the corresponding locating hole of the calf core 3.

[0028] After the mold is assembled, place the mold flat on the ground with the pouring hole facing upwards. Then, inject the raw material into the gap between the front mold 1, the rear mold 2, and the calf core 3 through the pouring hole. After the injection is completed, screw the four screw holes that pass through the filling port cover plate 7 into the threaded holes at the top of the front mold 1 and the rear mold 2 to seal the pouring hole. Finally, put the mold into the oven to bake for a certain period of time, then take out the mold and demold to obtain the desired calf skin.

[0029] Although the present invention has been described in detail above with reference to preferred embodiments, those skilled in the art should understand that the above embodiments are merely illustrative explanations of the present invention and are not intended to limit the scope of the present invention. The details in the embodiments do not constitute a limitation on the scope of the present invention. Any obvious changes, such as equivalent transformations or simple substitutions, based on the technical solution of the present invention without departing from the spirit and scope of the present invention fall within the protection scope of the present invention.

Claims

1. A device for fabricating skin on the lower leg of a WorldSID-50 dummy, characterized in that, The utility model relates to a mould for producing a calf leg, which comprises a front mould (1), a back mould (2), a calf leg core (3), a feature pin (4), a bayonet catch (5), a pry mouth gasket (6), a pouring mouth cover plate (7) and a bolt handle (8).

2. The WorldSID-50 dummy lower leg skin manufacturing device according to claim 1, characterized in that: The front mould (1) and the back mould (2) jointly form a calf leg-shaped cavity for wrapping the calf leg core (3), and the bolt handle (8) is arranged on the front mould (1) and the back mould (2) respectively.

3. The WorldSID-50 dummy lower leg skin manufacturing device according to claim 1, characterized in that: The feature pin (4) is arranged between the front mould (1) and the calf leg core (3), one end of the feature pin (4) is arranged through the front mould (1) and detachably connected with the calf leg core (3), and the other end is fixed to the outside of the front mould (1) through the screw and the bayonet catch (5).

4. The WorldSID-50 dummy lower leg skin manufacturing device according to claim 1, characterized in that: The front mould (1) and the back mould (2) are positioned through the positioning pin arranged in the positioning hole and fixed through the locking screw.

5. The WorldSID-50 dummy lower leg skin manufacturing device according to claim 1, characterized in that: The pry mouth gasket (6) is embedded in the parting surface pry mouth, the front surface of the pry mouth gasket (6) is attached to the front edge of the parting surface pry mouth of the front mould (1), the back surface is attached to the back edge of the parting surface pry mouth of the back mould (2), and the back surface and the back edge are fixed to the back and front of the parting surface pry mouth of the front mould (1) and the back mould (2) through the locking screw respectively.

6. The WorldSID-50 dummy lower leg skin manufacturing device according to claim 1, characterized in that: The pouring mouth cover plate (7) is fixed on the front mould (1) and the back mould (2) through the screw, and the exhaust hole is arranged at the top center of the pouring mouth cover plate (7). The left and right ends of the calf leg core (3) are embedded in the groove on the contact surface of the left and right ends of the front mould (1) and the back mould (2), the contact surface of the left and right ends of the front mould (1) and the back mould (2) is a symmetrical curved surface, and the outer side is provided with a groove attached to the contour of the outside of the calf skin.

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