CN-120869841-B - Injection molding testing device for injection molding quality control

Abstract

The invention discloses an injection molding part testing device for injection molding quality control, which belongs to the field of injection molding part testing and comprises a base, an air bag cover plate, a high-pressure air storage cylinder, a testing pushing cylinder, a sealing cylinder, an air flow impact assembly, a rupture testing assembly, a testing table, a positioning groove, a locking mechanism, a fragment scattering testing assembly and a projection lamp. According to the invention, by arranging the airflow impact assembly, high-pressure gas gathers and rotates in the vortex ring generation cavity and is eccentrically sprayed out through the energy gathering jet cavity, a speed difference is formed to induce multi-scale vortex to generate turbulence field to simulate explosion impact, by arranging the broken piece interception tower, the low-kinetic-energy broken pieces are captured by the adhesive layer, the high-kinetic-energy broken pieces are embedded into the interception lining to be fixed so as to test the number, size, shape, distribution density and direction of the broken pieces, by arranging the rupture test assembly, when the airbag cover plate fails to rupture, high-pressure nitrogen pushes the sealing plunger to slide to expose the pressure release hole to release pressure when the airbag cover plate fails to rupture, and the stabilizer bar impacts to trigger the pressure sensor.

Inventors

• YANG HONGYING
• Zhu Hanglei

Assignees

• 日隆科技(深圳)有限公司

Dates

Publication Date

20260512

Application Date

20250923

Claims (6)

1. 1. The injection molding test device for injection molding quality control comprises a base (1) and an air cylinder cover plate (2), and is characterized in that a high-pressure air bottle (3) and a plurality of test pushing cylinders (4) are arranged in the base (1), a sealing cylinder (5) is arranged on the surface of the base (1), an air flow impact assembly is arranged in the sealing cylinder (5), a rupture test assembly is arranged on the outer side wall of the sealing cylinder (5), a test table (6) is arranged above the base (1), a control button is arranged on the outer side wall of the test table (6), a positioning chute (7) is arranged on the surface of the test table (6), a limiting block (8) is arranged on the surface of the positioning chute (7), a limiting spring is arranged at the bottom of the limiting block (8), a handle penetrating through the base (1) is arranged on the outer side wall of the limiting block (8), a positioning groove (9) is arranged in the test table (6), a locking mechanism is arranged in the positioning groove (9), and a rupture test assembly and a projection lamp (10) are arranged above the test table (6). The air flow impact assembly comprises an electromagnetic valve arranged at the output end of the high-pressure air storage cylinder (3), the top end of the electromagnetic valve is fixedly connected with an air flow impact pipe (11), a porous lining layer (12) for generating turbulence is arranged in the air flow impact pipe (11), a plurality of vortex ring generating cavities (18) are formed in the bottom of the porous lining layer (12), a plurality of energy-collecting jet cavities (19) which are eccentrically arranged are formed in the top of the porous lining layer (12), and the energy-collecting jet cavities (19) are in one-to-one correspondence and are communicated with the vortex ring generating cavities (18); The rupture testing assembly comprises a pressure relief pipe (13) communicated with the sealing cylinder (5), a pressure relief hole is formed in the outer side wall of the pressure relief pipe (13), and a pressure sensor (14), a fixed ring (15), a pressure relief spring (16) and a sealing plunger (17) are sequentially arranged in the pressure relief pipe (13) from inside to outside; The fragment scattering test assembly comprises two fixing frames and a plurality of connecting rods which are longitudinally arranged, and a fragment interception tower for intercepting and collecting fragments is arranged between the fixing frames; Broken piece interception tower includes hexagonal fretwork roof (25) and fretwork bottom plate (26), the top of fretwork roof (25) is through pillar fixedly connected with second grade roof (27), fixedly connected with a plurality of fretwork curb plates (28) between fretwork roof (25) and fretwork bottom plate (26), the lateral wall of fretwork curb plate (28) is connected with second grade curb plate (29) through the pillar, the inside wall of fretwork roof (25), second grade roof (27), fretwork curb plate (28) and second grade curb plate (29) all bonds has interception inside lining (30) that are used for catching the broken piece, the inside wall of interception inside lining (30) is equipped with the adhesive layer.
2. 2. The injection molding testing device for injection molding quality control according to claim 1, wherein an action stabilizer bar (20) is fixedly connected to the center of one side of the sealing plunger (17) facing the pressure release spring (16), and the action stabilizer bar (20) is slidably connected with the fixing ring (15).
3. 3. The injection molding testing device for injection molding quality control according to claim 1, wherein the locking mechanism comprises a locking chute arranged on the inner side wall of the positioning groove (9) and an electromagnetic coil (21) arranged at the bottom of the test table (6), the electromagnetic coil (21) is electrically connected with the control button, a locking block (22) is slidably connected in the locking chute, one side of the locking block (22) is arranged to pass through the inclined plane air bag cover plate (2), the other side of the locking block (22) is fixedly connected with a locking spring, the locking spring is fixedly connected with the inner side wall of the locking chute, an action groove is formed in the upper surface of the locking block (22), and an action frame is arranged above the locking block (22).
4. 4. The injection molding testing device for injection molding quality control according to claim 3, wherein the action frame comprises a plurality of lifting rods (23), the lifting rods (23) are slidably connected with the electromagnetic coil (21), connecting blocks are fixedly connected to the top ends of the lifting rods (23), and guide rods (24) are fixedly connected between the connecting blocks.
5. 5. The injection molding testing device for injection molding quality control according to claim 1, wherein the top of the connecting rod is provided with a holding rod, the bottom of the connecting rod is provided with threads, and the bottom of the connecting rod penetrates through a fixing frame positioned above, a hollowed-out top plate (25) and a hollowed-out bottom plate (26) and is connected with the fixing frame positioned at the bottom.
6. 6. The injection molding testing device for injection molding quality control according to claim 1, wherein a switch is arranged at the top of the projection lamp (10), a pattern lamp sheet (31) is arranged in the projection lamp (10), a shading sheet (32) is adhered to the surface of the pattern lamp sheet (31), and a rectangular gap is formed between the shading sheets (32).

Description

Injection molding testing device for injection molding quality control Technical Field The invention relates to the technical field of injection molding test, in particular to an injection molding test device for injection molding quality control. Background The airbag cover plate is one of injection molding pieces in an automobile airbag system, and can be broken by the unfolded airbag in the process of airbag ejection, so that the airbag is released, the airbag ejection effect and the passenger safety are directly related to the rupture performance and the fragment scattering property of the airbag cover plate, and therefore quality inspection is required; When the safety airbag is actually unfolded, the release of high-pressure nitrogen accompanies the transient turbulent flow field, but the conventional equipment mostly adopts constant air pressure gradual pressurization test, so that the stress state of the cover plate when the safety airbag is ejected cannot be reproduced, and the deviation exists between the test and the actual working condition; When the airbag cover plate is used, fragments generated during rupture cannot fly out towards the face of a driver, but the existing test equipment cannot achieve the function of capturing the fragments, key parameters such as the space distribution density of the fragments, the scattering angle and the like can only be estimated through two-dimensional images, so that the safety risk assessment of the fragments is not accurate enough; Therefore, an injection molding testing device for injection molding quality control is provided to solve the above problems. Disclosure of Invention The invention aims to solve the problems that in the prior art, deviation exists between injection molding test equipment and actual working conditions and the evaluation of chip safety risks is not accurate enough, and provides an injection molding test device for injection molding quality control. In order to achieve the above purpose, the present invention adopts the following technical scheme: the injection molding part testing device for injection molding quality control comprises a base and an air bag cover plate, wherein a high-pressure air storage cylinder and a plurality of test pushing cylinders are arranged in the base, a sealing cylinder is arranged on the surface of the base, an air flow impact assembly is arranged in the sealing cylinder, and a rupture testing assembly is arranged on the outer side wall of the sealing cylinder; The air flow impact assembly comprises an electromagnetic valve arranged at the output end of the high-pressure air storage cylinder, the top end of the electromagnetic valve is fixedly connected with an air flow impact pipe, and a porous lining layer for generating turbulence is arranged in the air flow impact pipe; The rupture testing assembly comprises a pressure relief pipe communicated with the sealing cylinder, a pressure relief hole is formed in the outer side wall of the pressure relief pipe, and a pressure sensor, a fixed ring, a pressure relief spring and a sealing plunger are sequentially arranged in the pressure relief pipe from inside to outside; The test bench is arranged above the base, a control button is arranged on the outer side wall of the test bench, a positioning chute is arranged on the surface of the test bench, a limiting block is arranged on the surface of the positioning chute, a limiting spring is arranged at the bottom of the limiting block, a handle penetrating through the base is arranged on the outer side wall of the limiting block, a penetrating positioning groove is arranged in the test bench, a locking mechanism is arranged in the positioning groove, and a broken piece scattering test assembly and a projection lamp are arranged above the test bench; the broken piece scattering test assembly comprises two fixing frames and a plurality of connecting rods which are longitudinally arranged, and broken piece interception towers used for intercepting and collecting broken pieces are arranged between the fixing frames. Preferably, a plurality of vortex ring generating cavities are formed in the bottom of the porous lining layer, a plurality of eccentrically arranged energy-collecting jet cavities are formed in the top of the porous lining layer, and the energy-collecting jet cavities are in one-to-one correspondence and are communicated with the vortex ring generating cavities. Preferably, the sealing plunger is fixedly connected with an action stabilizer bar towards the center of one side of the pressure release spring, and the action stabilizer bar is in sliding connection with the fixed ring. Preferably, the locking mechanism comprises a locking chute arranged on the inner side wall of the positioning groove and an electromagnetic coil arranged at the bottom of the test board, wherein the electromagnetic coil is electrically connected with the control button, a locking block is slidably connected in the locking