An automotive high-pressure die-casting mold performance detection device and detection method

Abstract

The present invention belongs to the technical field of detection equipment, in particular to a performance detection device and detection method for an automotive high-pressure casting mold. The present invention includes: a base, on which a fixing frame is fixedly connected; an arc-shaped guide rail, fixedly connected below the fixing frame; a detection component, slidably connected to the arc-shaped guide rail, and the detection component detects the performance of the casting mold through two testing methods of impact and pressure application; a fixture table, fixedly connected to the base; the detection component includes a sliding frame, on which a lifting seat is slidably connected, a fixing rod is fixedly connected to the lifting seat, a pressing block is fixedly connected to the lower end of the fixing rod, and a pressure sensor is installed on the fixing rod; a vertical frame is fixedly connected to the sliding frame, and a liftable driving seat is connected to the vertical frame; the detection component of the present invention is provided with a driving seat and a lifting seat, so that the detection component can have two testing methods of impacting and pressing on the casting mold, and thus the test results of the casting mold are more comprehensive and accurate.

Description

Technical Field

[0001] The present invention relates to the technical field of detection equipment, and particularly relates to a performance detection device and detection method for an automotive high-pressure casting mold. Background Art

[0002] Automotive casting molds need to have a certain degree of toughness and compressive resistance to ensure the stability of the overall automotive structure. The main automotive molds include structures such as automotive anti-collision beams, bumpers, and girders. These components are important protective parts in the vehicle. The automotive anti-collision beam can protect the components inside the door from damage and minimize the damage to the vehicle body, especially the longitudinal beam of the vehicle body, caused by the impact force of a collision. Currently, through the use of special aluminum materials and optimized designs, the weight of the anti-collision beam has been reduced. On the premise of not reducing the anti-impact ability, strengthening ribs are added, the energy absorption box structure and layout, and material selection are optimized, so that the anti-collision beam can quickly deform and absorb impact energy during a collision; taking into account the rigidity and stability of the overall vehicle body structure.

[0003] Most of the existing methods for detecting anti-collision beams are through three-point bending tests, testing the middle position and both sides of the anti-collision beam. Existing detection equipment generally uses a test method of applying a large constant pressure to the surface of the anti-collision beam to observe the anti-bending performance of the anti-collision beam. The test mode is relatively single. In fact, most vehicle accidents are instantaneous collisions. Therefore, the test data of the single-mode detection equipment cannot comprehensively reflect the performance of the anti-collision beam. Summary of the Invention

[0004] Aiming at the deficiencies of the prior art, the present invention provides a performance detection device and detection method for an automotive high-pressure casting mold. The casting mold can be subjected to impact tests and pressure tests through the detection component, aiming to solve the problems in the background art.

[0005] To achieve the above technical objectives, the specific technical solution of the present invention is as follows. A performance detection device for an automotive high-pressure casting mold proposed by the present invention includes: a base, on which a fixed frame is fixedly connected; an arc-shaped guide rail fixedly connected below the fixed frame; a detection component slidably connected to the arc-shaped guide rail, and the detection component detects the performance of the casting mold through two test methods of impact and pressure; a fixture table fixedly connected to the base, and the fixture table is used to clamp and fix the casting mold; the detection component includes a sliding frame slidably connected to the arc-shaped guide rail. An elevating seat is slidably connected to the sliding frame. A fixed rod is fixedly connected to the elevating seat. A pressing block is fixedly connected to the lower end of the fixed rod, and a pressure sensor is installed on the fixed rod; a vertical frame is fixedly connected to the sliding frame, and a liftable driving seat is connected to the vertical frame for driving the elevating seat to lift.

[0006] As a preferred technical solution of the present invention, a lead screw is fixedly connected to the vertical frame, a lead screw sleeve threadedly connected to the lead screw is rotatably connected to the driving seat, the driving seat is driven to lift when the lead screw sleeve rotates, and a driving motor is installed on the driving seat. A driving gear is connected to the rotating shaft of the driving motor, and a driven gear meshing with the driving gear is fixedly installed on the lead screw sleeve.

[0007] As a preferred technical solution of the present invention, an accommodating groove is provided inside the lifting seat, a limiting block capable of extending outwards is connected in the accommodating groove, and a bracket is fixedly connected to the limiting block. A first elastic member is fixedly connected between the bracket and the inner wall of the accommodating groove; and a rotating shaft is rotatably connected to the lifting seat. The lower end of the rotating shaft is connected to a rotating member capable of meshing with the driven gear, and the upper end of the rotating shaft extends into the accommodating groove and is fixedly connected to an eccentric wheel. The eccentric wheel is used to drive the limiting block to move, and the eccentric wheel contacts the bracket.

[0008] As a preferred technical solution of the present invention, an upper limiting groove and a lower limiting groove for cooperating with the limiting block are respectively provided on the side surface of the driving seat, and when the limiting block is connected to the lower limiting groove, the rotating member and the driven gear are in a meshing state.

[0009] As a preferred technical solution of the present invention, the rotating member includes an outer gear ring, a ratchet wheel is rotatably connected inside the outer gear ring, the ratchet wheel is fixedly connected to the rotating shaft, and a plurality of pawls are connected to the inner wall of the outer gear ring. A second elastic member is fixedly connected between the pawl and the inner wall of the outer gear ring.

[0010] As a preferred technical solution of the present invention, a sliding rod is fixedly connected to the sliding frame, a cylindrical spring is connected to the sliding rod, and the cylindrical spring applies a downward elastic force to the lifting seat.

[0011] As a preferred technical solution of the present invention, an arc-shaped groove is provided on the arc-shaped guide rail, and an arc-shaped rack is fixedly connected to the arc-shaped guide rail. A servo motor is installed on the sliding frame, and a driving gear meshing with the arc-shaped rack is fixedly connected to the rotating shaft of the servo motor.

[0012] As a preferred technical solution of the present invention, a chute is provided along the length direction of the fixture table, a pair of sliders are slidably connected to the chute, and clamping blocks are fixedly connected to the sliders for clamping and fixing the casting mold. A pair of threaded rods are threadedly connected to both ends of the fixture table for driving the sliders to move, and one end of the threaded rod is rotatably connected to the slider.

[0013] A method for detecting the performance of an automotive high-pressure casting mold includes the following two detection methods:

[0014] Impact detection: The detection component moves along the arc-shaped guide rail to a specified position, and then the driving motor rotates forward to drive the driving seat to rise. The driving seat drives the lifting seat to rise to a specified height. During the rising process, the limiting block is connected in the lower limiting groove, and the cylindrical spring is compressed under force. Then the driving motor rotates reversely to drive the driven gear to reverse, drives the eccentric wheel to rotate through the rotating part, and further drives the limiting block to contract into the lifting seat. The lifting seat quickly descends under the action of gravity and the elastic force of the cylindrical spring, driving the pressing block to impact the casting mold to conduct an impact test on the casting mold.

[0015] Pressure application detection: Adjust the height of the lifting seat so that the pressing block is pressed on the surface of the casting mold. Then manually rotate the rotating part to insert the limiting block into the upper limiting groove. Then the driving motor rotates reversely to apply a downward pressure to the lifting seat, and further drives the pressing block to press down on the casting mold to conduct a pressure application test on the casting mold.

[0016] The beneficial effects of the present invention are as follows:

[0017] 1. The detection component of the present invention is provided with a driving seat and a lifting seat. The driving seat can drive the lifting seat to rise and fall, enabling the detection component to have two test methods for impacting and applying pressure to the casting mold, and thus making the test results of the casting mold more comprehensive and accurate.

[0018] 2. By providing an arc-shaped guide rail, the detection component of the present invention can move to a specified position on the arc-shaped guide rail, and thus can realize the detection of various positions of the casting mold, with comprehensive detection positions. Description of the Drawings

[0019] Figure 1 It is a schematic structural diagram of a device for detecting the performance of an automotive high-pressure casting mold proposed by the present invention.

[0020] Figure 2 It is a schematic structural diagram of the arc-shaped guide rail and the detection component proposed by the present invention.

[0021] Figure 3 It is a schematic structural diagram of the detection component proposed by the present invention.

[0022] Figure 4 It is a front view schematic diagram of the detection component proposed by the present invention.

[0023] Figure 5 It is a schematic structural diagram of the driving seat proposed by the present invention.

[0024] Figure 6 It is a schematic internal structure diagram of the lifting seat proposed by the present invention.

[0025] Figure 7 It is a schematic structural diagram of the rotating part proposed by the present invention.

[0026] Figure 8Schematic structural diagram of the fixture table proposed by the present invention.

[0027] In the figure: 1, base; 2, fixed frame; 3, arc-shaped guide rail; 31, arc-shaped rack; 32, arc-shaped groove; 4, detection component; 41, sliding frame; 42, driving seat; 421, lead screw sleeve; 422, driven gear; 423, driving motor; 424, driving gear; 425, upper limit groove; 426, lower limit groove; 43, lifting seat; 431, limit block; 432, rotating part; 4321, external gear ring; 4322, ratchet; 4323, ratchet pawl; 4324, second elastic member; 433, support; 434, first elastic member; 435, eccentric wheel; 436, accommodating groove; 437, rotating shaft; 44, vertical frame; 45, lead screw; 46, slide bar; 47, cylindrical spring; 48, servo motor; 49, driving gear; 410, pressing block; 411, fixed rod; 412, pressure sensor; 5, fixture table; 51, threaded rod; 52, slider; 53, clamping block; 54, chute. Detailed implementation manners

[0028] Next, the technical solutions in the embodiments of the present invention will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments.

[0029] Embodiment: This embodiment discloses an automotive high-pressure casting mold performance detection device, as Figures 1-8 shown, including: a base 1, a fixed frame 2 fixedly connected to the base 1, and the fixed frame 2 has an inverted U-shaped structure; an arc-shaped guide rail 3 fixedly connected below the fixed frame 2; a detection component 4 slidably connected to the arc-shaped guide rail 3, wherein the detection component 4 detects the performance of the casting mold through two testing methods of impact and pressure application; a fixture table 5 fixedly connected to the base 1, and the fixture table 5 is used to clamp and fix the casting mold. Among them, the casting mold is an anti-collision component of an automobile, such as an anti-collision beam. In this embodiment, by sliding the detection component 4 to a specified position on the arc-shaped guide rail 3, compressive and strength tests can be performed on various positions of the casting mold.

[0030] Preferably, a chute 54 is provided along the length direction of the fixture table 5, a pair of sliders 52 are slidably connected to the chute 54, and a clamping block 53 is fixedly connected to the sliders 52 for clamping and fixing the casting mold. A limit groove is provided on the clamping block 53, and a pair of threaded rods 51 are threadedly connected to both ends of the fixture table 5 for driving the sliders 52 to move. One end of the threaded rod 51 is rotatably connected to the slider 52; by rotating the threaded rod 51 to drive the slider 52 to move, the clamping block 53 clamps and fixes the casting mold.

[0031] As Figures 2-4As shown in the figure, the detection component 4 includes a sliding frame 41. The sliding frame 41 is slidably connected to the arc-shaped guide rail 3. An elevating seat 43 is slidably connected to the sliding frame 41. A slide bar 46 is fixedly connected to the sliding frame 41. The elevating seat 43 is slidably connected to the slide bar 46. A cylindrical spring 47 is connected to the slide bar 46. The cylindrical spring 47 exerts a downward elastic force on the elevating seat 43. A fixed rod 411 is fixedly connected to the elevating seat 43. A pressing block 410 is fixedly connected to the lower end of the fixed rod 411. The pressing block 410 can press or strike the surface of the casting mold. A pressure sensor 412 is installed on the fixed rod 411 for sensing the pressure on the casting mold. A vertical frame 44 is fixedly connected to the sliding frame 41. The vertical frame 44 is arranged on one side of the sliding frame 41. A liftable driving seat 42 is connected to the vertical frame 44 for driving the elevating seat 43 to move up and down.

[0032] Preferably, an arc-shaped groove 32 is provided on the arc-shaped guide rail 3, and an arc-shaped rack 31 is fixedly connected to the arc-shaped guide rail 3. A servo motor 48 is installed on the sliding frame 41. A driving gear 49 meshing with the arc-shaped rack 31 is fixedly connected to the rotating shaft of the servo motor 48. By driving the driving gear 49 to rotate through the servo motor 48, the entire detection component 4 is driven to move on the arc-shaped guide rail 3, so as to be able to test different positions of the casting mold.

[0033] As Figure 5 shown in the figure, a lead screw 45 is fixedly connected to the vertical frame 44. A lead screw sleeve 421 threadedly connected to the lead screw 45 is rotatably connected to the driving seat 42. The lead screw sleeve 421 can be rotatably connected to the driving seat 42 through a bearing. When the lead screw sleeve 421 rotates, it can drive the driving seat 42 to move up and down. A driving motor 423 is installed on the driving seat 42. A driving gear 424 is connected to the rotating shaft of the driving motor 423. A driven gear 422 meshing with the driving gear 424 is fixedly installed on the lead screw sleeve 421. By driving the driving gear 424 to rotate through the driving motor 423, the driving gear 424 drives the driven gear 422 to rotate, and then drives the lead screw sleeve 421 to rotate, realizing the function of driving the driving seat 42 to move up and down. Among them, an upper limit groove 425 and a lower limit groove 426 cooperating with the limit block 431 are respectively provided on the side surface of the driving seat 42.

[0034] As Figure 6As shown in the figure, a receiving groove 436 is provided inside the lifting seat 43. A limiting block 431 that can extend to the outside is connected inside the receiving groove 436. A bracket 433 is fixedly connected to the limiting block 431. A first elastic member 434 is fixedly connected between the bracket 433 and the inner wall of the receiving groove 436. A rotating shaft 437 is rotatably connected to the lifting seat 43. The lower end of the rotating shaft 437 is connected to a rotating member 432 that can mesh with the driven gear 422. The upper end of the rotating shaft 437 extends into the receiving groove 436 and is fixedly connected to an eccentric wheel 435. The eccentric wheel 435 is used to drive the limiting block 431 to move, and the eccentric wheel 435 contacts the bracket 433. Among them, when the limiting block 431 is connected to the lower limit groove 426, the rotating member 432 and the driven gear 422 are in a meshing state; when the limiting block 431 is connected to the upper limit groove 425, the rotating member 432 and the driven gear 422 are not meshed. Through the cooperation of the driven gear 422 and the rotating member 432, the eccentric wheel 435 can be driven to rotate, and then the movement of the limiting block 431 can be controlled. When the limiting block 431 extends out of the lifting seat 43, the limiting block 431 is connected to the upper limit groove 425 or the lower limit groove 426. At this time, when the driving seat 42 moves, the lifting seat 43 can be driven to move; when the limiting block 431 is received into the receiving groove 436, the lifting seat 43 is separated from the driving seat 42 at this time.

[0035] As Figure 7 shown in the figure, the rotating member 432 includes an outer gear ring 4321. A ratchet wheel 4322 is rotatably connected inside the outer gear ring 4321. The ratchet wheel 4322 is fixedly connected to the rotating shaft 437. A plurality of pawls 4323 are connected to the inner wall of the outer gear ring 4321. A second elastic member 4324 is fixedly connected between the pawl 4323 and the inner wall of the outer gear ring 4321. When the driving motor 423 rotates forward, the driving seat 42 and the lifting seat 43 rise. The driven gear 422 drives the outer gear ring 4321 to rotate counterclockwise. At this time, the outer gear ring 4321 does not drive the ratchet wheel 4322 to rotate, so that the eccentric wheel 435 remains stationary, and further the limiting block 431 is stably connected to the lower limit groove 426. When the driving motor 423 rotates reversely, the driven gear 422 drives the outer gear ring 4321 to rotate clockwise. The outer gear ring 4321 drives the ratchet wheel 4322 to rotate, drives the eccentric wheel 435 to rotate, and the eccentric wheel 435 drives the limiting block 431 to contract. The limiting block 431 is separated from the lower limit groove 426. The lifting seat 43 can quickly drive the pressing block 410 to descend and impact the surface of the casting mold. After the pressing block 410 impacts the casting mold, the lifting seat 43 will not disengage from the sliding rod 46.

[0036] This embodiment also discloses a method for detecting the performance of an automotive high-pressure casting mold. Based on the above detection equipment, this embodiment includes the following two detection methods:

[0037] Impact detection: The detection component 4 moves along the arc-shaped guide rail 3 to a specified position, and then the driving motor 423 rotates forward to drive the driving seat 42 to rise. The driving seat 42 drives the lifting seat 43 to rise to a specified height. During the rising process, the limiting block 431 is connected in the lower limit groove 426, and the cylindrical spring 47 is compressed under force. Then the driving motor 423 rotates reversely to drive the driven gear 422 to reverse, drives the eccentric wheel 435 to rotate through the rotating member 432, and further drives the limiting block 431 to contract into the lifting seat 43. The lifting seat 43 rapidly descends under the action of gravity and the elastic force of the cylindrical spring 47, driving the pressing block 410 to impact the casting mold for an impact test on the casting mold.

[0038] Pressure application detection: Adjust the height of the lifting seat 43 so that the pressing block 410 is pressed on the surface of the casting mold. Then manually rotate the rotating member 432 to insert the limiting block 431 into the upper limit groove 425. At this time, the rotating member 432 is not engaged with the driven gear 422. Then the driving motor 423 rotates reversely to apply a downward pressure to the lifting seat 43, and further drives the pressing block 410 to press down on the casting mold for a pressure application test on the casting mold.

[0039] In this embodiment, a single driving motor 423 can be used to implement two detection methods, namely pressure application detection and impact detection, for the casting mold. The structure is reasonable, solving the problem of the single test mode of existing detection equipment, and making the test results of the casting mold more comprehensive and accurate.

[0040] Finally, it should be noted that in the description of the present invention, it should be noted that the orientation or positional relationship indicated by the terms "vertical", "upper", "lower", "horizontal", etc. is based on the orientation or positional relationship shown in the drawings, and is only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of the present invention.

[0041] The above are only the preferred embodiments of the present invention and are not used to limit the present invention. Although the present invention has been described in detail with reference to the foregoing embodiments, for those skilled in the art, they can still modify the technical solutions recorded in the foregoing embodiments, or perform equivalent replacements for some of the technical features. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principle of the present invention shall be included within the protection scope of the present invention.

Claims

1. A performance detection device for automobile high pressure casting mold, characterized in that: include: A base (1), to which a fixing frame (2) is fixedly connected; An arc-shaped guide rail (3) fixedly connected below the fixing frame (2); A detection component (4) is slidably connected to the arc-shaped guide rail (3), and the detection component (4) detects the performance of the casting mold through two testing methods: impact and pressure; A fixture table (5) is fixedly connected to the base (1), and the fixture table (5) is used to clamp and fix the casting mold; The detection assembly (4) comprises a sliding frame (41), the sliding frame (41) is slidably connected to the arc-shaped guide rail (3), a lifting seat (43) is slidably connected to the sliding frame (41), a fixing rod (411) is fixedly connected to the lifting seat (43), a pressure block (410) is fixedly connected to the lower end of the fixing rod (411), and a pressure sensor (412) is installed on the fixing rod (411); The sliding frame (41) is fixedly connected to a vertical frame (44), and the vertical frame (44) is connected to a liftable driving seat (42) for driving the lifting seat (43) to move up and down; A screw rod (45) is fixedly connected to the vertical frame (44), a screw rod sleeve (421) threadedly connected to the screw rod (45) is rotatably connected to the driving seat (42), the screw rod sleeve (421) drives the driving seat (42) to rise and fall when rotating, and a driving motor (423) is installed on the driving seat (42), a driving gear (424) is connected to the rotating shaft of the driving motor (423), and a driven gear (422) meshing with the driving gear (424) is fixedly installed on the screw rod sleeve (421); The lifting seat (43) is provided with a receiving groove (436) inside, a limit block (431) capable of extending outside is connected inside the receiving groove (436), a bracket (433) is fixedly connected to the limit block (431), and a first elastic member (434) is fixedly connected between the bracket (433) and the inner wall of the receiving groove (436); a rotating shaft (437) is rotatably connected to the lifting seat (43), a rotating member (432) capable of meshing with a driven gear (422) is connected to the lower end of the rotating shaft (437), and an eccentric wheel (435) is fixedly connected to the upper end of the rotating shaft (437) to extend into the receiving groove (436), and the eccentric wheel (435) is used to drive the limit block (431) to move, and the eccentric wheel (435) is in contact with the bracket (433); An upper limit groove (425) and a lower limit groove (426) that cooperate with the limit block (431) are respectively provided on the side surface of the driving seat (42), and when the limit block (431) is connected to the lower limit groove (426), the rotating member (432) and the driven gear (422) are in a meshing state; when the limit block (431) is connected to the upper limit groove (425), the rotating member (432) and the driven gear (422) are not meshing.

2. The automobile high pressure casting mold performance detection device according to claim 1 is characterized in that: The rotating member (432) comprises an outer gear ring (4321), a ratchet (4322) is rotatably connected inside the outer gear ring (4321), the ratchet (4322) is fixedly connected to the rotating shaft (437), and a plurality of ratchet pawls (4323) are connected to the inner wall of the outer gear ring (4321), and a second elastic member (4324) is fixedly connected between the ratchet pawls (4323) and the inner wall of the outer gear ring (4321).

3. The automobile high pressure casting mold performance detection device according to claim 2 is characterized in that: The sliding frame (41) is fixedly connected to a sliding rod (46), and the sliding rod (46) is connected to a cylindrical spring (47), and the cylindrical spring (47) applies a downward elastic force to the lifting seat (43).

4. The automobile high pressure casting mold performance detection device according to claim 3 is characterized in that: The arc-shaped guide rail (3) is provided with an arc-shaped groove (32), and the arc-shaped rack (31) is fixedly connected to the arc-shaped guide rail (3). A servo motor (48) is installed on the sliding frame (41), and a driving gear (49) meshing with the arc-shaped rack (31) is fixedly connected to the rotating shaft of the servo motor (48).

5. The automobile high pressure casting mold performance detection device according to claim 4, characterized in that: The fixture table (5) is provided with a slide groove (54) along its length direction, a pair of sliders (52) are slidably connected to the slide groove (54), a clamping block (53) is fixedly connected to the slider (52) and is used to clamp the casting mold, and a pair of threaded rods (51) are threadedly connected at both ends of the fixture table (5) and are used to drive the slider (52) to move, and one end of the threaded rod (51) is rotatably connected to the slider (52).

6. A method for detecting the performance of an automobile high pressure casting mold, using the automobile high pressure casting mold performance detection device as claimed in claim 5, characterized in that: There are two detection methods: Impact detection: the detection component (4) moves to a specified position along the arc guide rail (3), and then the driving motor (423) rotates in the forward direction to drive the driving seat (42) to rise, and the driving seat (42) drives the lifting seat (43) to rise to a specified height. During the rising process, the limit block (431) is connected to the lower limit groove (426), and the cylindrical spring (47) is compressed; then the driving motor (423) rotates in the reverse direction to drive the driven gear (422) to reverse, and drives the eccentric wheel (435) to rotate through the rotating member (432), thereby driving the limit block (431) to shrink into the lifting seat (43), and the lifting seat (43) quickly descends under the gravity and the elastic force of the cylindrical spring (47), driving the pressure block (410) to impact the casting mold, and performing an impact test on the casting mold; Pressure test: The height of the lifting seat (43) is adjusted so that the pressing block (410) is pressed against the surface of the casting mold, and then the rotating member (432) is manually rotated to insert the limit block (431) into the upper limit slot (425), and then the motor (423) is driven to rotate in the opposite direction to apply downward pressure to the lifting seat (43), thereby driving the pressing block (410) to press down the casting mold, and performing a pressure test on the casting mold.

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