Performance detection device for automobile part production

Abstract

The invention discloses a performance detection device for automobile part production, which is characterized in that a lower die holder is mounted on the upper surface of a base in a front-back moving manner, two groups of pressing mechanisms for pressing workpieces are symmetrically arranged on the left and right sides of the lower die holder, and lifting lead screws are rotatably mounted at the left and right ends of a top plate and the base through bearings; a lifting plate is installed between the two lifting lead screws in a lifting mode through a lifting screw base, two translation lead screws are rotationally installed at the left end and the right end of the lower portion of the base through bearing seats, a translation plate is installed between the two translation lead screws in a front-back moving mode, and the lower end of the pressing mechanism is slidably connected with the translation plate. Pushing structures used for driving the lower die base are arranged on the translation plate in a bilateral symmetry mode, the lower die base and the upper die base are in linkage design through a lifting lead screw, a translation lead screw, the translation plate and the pushing structures, the upper die base can synchronously descend while the lower die base moves, and the situation that the downward moving degree of the upper die base is too large when the lower die base is not completely static is avoided. And the detection precision is improved.

Description

Technical Field

[0001] The present invention relates to the technical field of automotive parts detection, and particularly to a performance detection device for automotive parts production. Background Art

[0002] An automotive fuse box is a box used to install automotive fuses. It needs to have good sealing and waterproof performance to better protect the internal electronic components. Therefore, airtight detection equipment is required to detect its airtightness during the production process. Currently, the internal pressure test airtightness detection equipment generally includes a lower mold base that slides back and forth on a base through a track. Above the base, there is also an upper mold base controlled by a lead screw or a cylinder for lifting and lowering. A plugging member corresponding to the wiring slot of the fuse box is fixed inside the upper mold base. During use, the fuse box is placed on the lower mold base, and then the lower mold base is manually pushed under the upper mold base, and the upper mold base is lowered to press on the lower mold base. The plugging member will also block the wiring slot, and a series of gases such as nitrogen or helium are filled into the fuse box through the reserved pipeline inside the plugging member, so as to conduct the detection. After the detection is completed, the gas inside it needs to be pumped out to avoid leakage.

[0003] The movement of the lower mold base is manually driven, which requires the hand of the operator to reach under the upper mold base, posing a certain danger. When a separate drive system is used to control the lower mold base, the mechanical errors (such as rail clearance and motor backlash) of the two sets of independent drive systems of the lower mold base and the upper mold base are superimposed on each other during the combined action, resulting in a decrease in the final positioning accuracy. If the upper mold base starts in advance when the lower mold base is not completely stationary, it may cause abnormal wear of the rails or product collision, resulting in a risk of dynamic interference. There are also defects in the timing coordination between the two, which will lead to the accumulation of action delays. Its action timing is: sliding stop signal detection → drive signal switching → response of the lifting mechanism with a time difference. When operating frequently, the cumulative delay is significant, reducing the overall efficiency. And after the gas is pumped out, since the fuse box itself is a plastic product, it is light in weight and is in a sealed state as a whole, with a certain pressure difference inside and outside, which may cause it to be adsorbed inside the upper mold base and requires manual reaching into the upper mold base to remove it, posing a certain danger and affecting the overall detection efficiency. For this reason, we have designed a performance detection device for automotive parts production. Summary of the Invention

[0004] A performance detection device for automotive parts production proposed by the present invention solves the above problems.

[0005] In order to achieve the above object, the present invention adopts the following technical solutions: A performance detection device for automotive parts production includes a base. A lower mold base is installed to move back and forth on the upper surface of the base. A workpiece is placed above the lower mold base. Two sets of pressing mechanisms for pressing the workpiece are symmetrically arranged on the left and right sides of the lower mold base; At the rear half above the base, a top plate is suspended and fixed by four columns. At the left and right ends of the top plate and the base, lifting lead screws are rotatably installed through bearings. Between the two lifting lead screws, a lifting plate is installed in a lifting manner through a lifting nut. At the four corners of the lifting plate, it is slidably sleeved with the four columns up and down. A top die base is fixed below the lifting plate, and a pressing plate is fixed inside the top die base. At the left and right ends below the base, two groups of translation lead screws are rotatably installed through bearing seats. Between the two groups of translation lead screws, a translation plate is installed in a front-back moving manner. The lower end of the pressing mechanism is slidably connected to the translation plate. On the translation plate, a pushing structure for driving the bottom die base is symmetrically arranged on the left and right.

[0006] Preferably, an air port is formed through the pressing plate up and down. At the top end of the top die base, an air inlet pipe and an air outlet pipe are respectively welded. The air inlet pipe and the air outlet pipe both pass through the lifting plate and are above it. The bottom end of the air inlet pipe is communicated with the air port. The workpiece is provided with a notch for wire routing. The position and size of the air port on the pressing plate correspond to those of the notch on the workpiece. And a sealing ring protrudes from the part below the air port on the pressing plate, and a sealing gasket is also arranged at the peripheral edge of the lower part of the top die base.

[0007] Preferably, two moving tracks are symmetrically arranged on the left and right above the base. The bottom die base is slidably installed on the two moving tracks back and forth through moving sliders. A plurality of uniformly distributed threaded holes are formed on the upper end surface of the bottom die base. Positioning rods are threadedly connected in the threaded holes. The bottom end of the positioning rod is provided with a threaded section, and an abutting column is arranged above it. The abutting column contacts the side surface of the workpiece. According to the actual size of the workpiece, the position distribution of the plurality of positioning rods is adjusted so that the workpiece is placed in the space formed by the plurality of positioning rods for rapid positioning, thereby ensuring that the notch on the workpiece is directly below the air port on the pressing plate. On the front side of the lower end surface of the bottom die base, two groups of pushing plates are symmetrically arranged on the left and right. And at the front and rear ends of the middle part below the bottom die base, an adsorption plate is respectively arranged. At the front and rear sides of the middle part of the upper end of the base, an adsorbent is respectively fixed. The position of the adsorbent corresponds to that of the adsorption plate. The adsorption plate and the adsorbent are made of a magnetizable material as required. When the bottom die base moves to the frontmost or rearmost position along the moving track, the adsorption plate and the adsorbent can adsorb each other.

[0008] Preferably, the top ends of the two lifting lead screws pass through the top plate and are above it, and between the two lifting lead screws, they are connected to the output shaft of the driving motor through a toothed belt and toothed belt wheels. The bottom ends of the lifting lead screws pass through the base and are below it. And on the part of the lifting lead screw below the base, a driving bevel gear is installed. At one end of the translation lead screw close to the lifting lead screw, a driven bevel gear is installed. The driven bevel gear meshes with the driving bevel gear. Moving nuts are arranged at the left and right ends of the translation plate. The translation plate is threadedly connected to the translation lead screw through the moving nuts.

[0009] Preferably, two driving grooves are symmetrically formed on the left and right sides of the upper end of the base. Two offset grooves are symmetrically formed on the left and right of the translation plate. The pushing structure includes two contact rollers slidably disposed above the base. The tops of the two contact rollers are connected by a U-shaped frame. A guiding rod is formed by extending the bottom end of one contact roller away from the lifting lead screw downward. The top of the contact roller does not contact the lower surface of the lower die base. The guiding rod passes through the driving groove and extends into the offset groove. The cross section of the offset groove is in a convex shape. A roller is provided at the bottom end of the guiding rod, and the roller rolls in the offset groove. The guiding rod enables the two contact rollers to move back and forth together with the translation plate, and the two contact rollers can also move left and right along the offset groove.

[0010] Preferably, the driving groove includes a horizontally designed contact groove and an extension groove. The extension groove is located behind the base, and the contact groove and the extension groove are connected by an inclined away groove. The distance between the extension groove and the side surface of the base is smaller than the distance between the contact groove and the side surface of the base. The distance between the two contact rollers in the same group is greater than the distance between the rear end of the contact groove and the front end of the extension groove; When the guiding rod moves along the contact groove, the positions of the two contact rollers away from the side surface of the base remain unchanged. At this time, the front and rear contact rollers are respectively located directly in front of and directly behind the pushing plate. When the guiding rod moves to the away groove and slides along it, the two contact rollers will gradually move outward. When the guiding rod moves to the intersection of the extension groove and the away groove, the outer side surface of the pushing plate is tangent to the surface of the contact roller at this time.

[0011] Preferably, two through connection openings are symmetrically formed on the left and right sides above the base. The pressing mechanism includes a guiding sleeve embedded in the lower die base. A lifting rod is slidably inserted up and down in the guiding sleeve. The bottom end of the lifting rod passes through the through connection opening and is located below the base. An installation frame is fixed above the lower die base. The upper end of the lifting rod slides through the top of the installation frame and is located above it. A pressing member is installed on the lifting rod. The lower surface of the pressing member close to the workpiece is pressed against the workpiece. A pressing spring is sleeved on the lifting rod. The two ends of the pressing spring are respectively abutted against the installation frame and the pressing member; Two jacking frames are symmetrically arranged on the left and right of the translation plate. The front end of the jacking frame is cut off to form a jacking inclined surface. The bottom end of the lifting rod is designed in a semi-circular structure. When the lower die base is directly below the upper die base, the bottom end of the lifting rod is in sliding contact with the upper surface of the translation plate. At this time, the pressing member contacts the workpiece and presses it tightly. When the lower die base is at the frontmost position, the bottom end of the lifting rod is in sliding contact with the upper surface of the jacking frame at this time. At this time, the lifting rod makes the pressing member at a higher height and does not press the workpiece tightly, which is convenient for removing the workpiece and placing a new workpiece.

[0012] Preferably, two sets of symmetrically distributed deflection grooves are formed in the inner wall of the guide sleeve, and two deflecting heads are symmetrically arranged on the outer surface of the lifting rod. The deflecting heads are slidably placed in the deflection grooves. When the lifting rod slides up and down inside the guide sleeve, the lifting rod can rotate along the deflection grooves through the deflecting heads, so that the pressing member fixed on the lifting rod deflects accordingly. When the deflecting heads are at the lowest position, the pressing member presses the workpiece at this time. When the deflecting heads are at the highest position, the pressing member releases the pressing on the workpiece.

[0013] Preferably, an upper opening is formed through the upper and lower surfaces of the pressing member, and side openings are formed through the front and rear surfaces of the pressing member. The lifting rod is slidably inserted into the upper opening up and down, and two symmetrically distributed screw rods are fixed on the side surface of the lifting rod. The two screw rods respectively pass through the two side openings and nuts are tightened on the screw rods. Loosen the two nuts so that the pressing member can slide and adjust along the upper opening and the side openings. After moving to the required length, tighten the nuts again to make it suitable for workpieces of various different sizes.

[0014] Preferably, a threaded hole is formed through the upper and lower ends of the pressing member near the workpiece. A bolt is threadedly connected in the threaded hole. The bottom end of the bolt passes through the thread and is located below the pressing member, and a pressing head is fixed at the bottom end of the bolt. The pressing head is used to press the workpiece, and the height of the pressing head can be changed by screwing the bolt, so as to be suitable for pressing workpieces of various different thicknesses.

[0015] The beneficial effects of the present invention: 1. The upper die base is installed in a lifting manner through a lifting lead screw above the base, and a pressing plate is installed in the upper die base. The lower die base is slidably installed on the front and rear surfaces of the base. The lower die base and the upper die base are linked by a lifting lead screw, a translation lead screw, a translation plate and a pushing structure. When the lower die base moves, the upper die base can synchronously descend. After the lower die base moves in place, the upper die base is at a certain height above the lower die base, and it can continue to move downward, avoiding excessive downward movement of the upper die base when the lower die base is not completely stationary, which may cause abnormal wear of the guide rail or product collision, and also ensuring that the lower die base must be below the upper die base, improving the detection accuracy; 2. By slidably arranging a pressing mechanism in the front and rear directions above the base, and the lower end of the pressing mechanism is connected to the translation plate, the pressing mechanism can press and position the workpiece located above it before the lower die base moves, ensuring that it will not shift in position during the movement process, improving the detection accuracy. And after the subsequent detection is completed, the pressing mechanism can also ensure that the workpiece will not be adsorbed on the pressing plate, thus facilitating the rapid removal of the workpiece. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 It is a main sectional view schematic diagram of a performance detection device for automobile part production proposed by the present invention; Figure 2 is Figure 1 Structural schematic diagram of the lifting plate and the top plate not being set; Figure 3 is Figure 2 Structural schematic diagram of the middle base, the pressing mechanism and the pushing structure; Figure 4 is Figure 3 Structural schematic diagram of the lifting lead screw, the translation lead screw, the translation plate, the pushing structure and the pressing mechanism in ; Figure 5 is Figure 3 Structural schematic diagram of the driving groove in ; Figure 6 is Figure 1 Cross-sectional view of ; Figure 7 is Figure 6 Enlarged schematic diagram at position A in ; Figure 8 is Figure 7 Expanded view of the guide sleeve in ; Figure 9 is Figure 2 Structural schematic diagram of the lower die base and the pressing mechanism in.

[0017] Reference numerals in the figure: 1. Base; 11. Column; 12. Driving groove; 121. Contact groove; 122. Away groove; 123. Extension groove; 13. Through connection strip opening; 2. Lifting plate; 21. Lifting screw seat; 22. Upper die base; 23. Pressure plate; 24. Air inlet pipe; 25. Air outlet pipe; 3. Top plate; 31. Lifting lead screw; 311. Active bevel gear; 4. Lower die base; 41. Positioning rod; 42. Moving track; 43. Pushing plate; 44. Translation lead screw; 441. Driven bevel gear; 45. Translation plate; 451. Offset groove; 452. Jacking frame; 453. Jacking inclined surface; 46. Pushing structure; 461. Contact roller; 462. C-shaped frame; 463. Guide rod; 47. Adsorption plate; 5. Pressing mechanism; 51. Guide sleeve; 511. Deflection groove; 52. Mounting frame; 53. Lifting rod; 531. Deflecting head; 54. Pressing member; 541. Upper opening; 542. Side opening; 543. Pressing head; 55. Lower pressing spring; 6. Workpiece; 7. Adsorbing member. Specific embodiments

[0018] 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.

[0019] Refer to Figure 1 – Figure 9, A performance detection device for automotive part production, including a base 1. A lower die holder 4 is movably installed on the front and back of the upper surface of the base 1. A workpiece 6 is placed above the lower die holder 4. Two sets of pressing mechanisms 5 for pressing the workpiece 6 are symmetrically arranged on the left and right sides of the lower die holder 4; At the rear half above the base 1, a top plate 3 is fixedly suspended by four columns 11. At the left and right ends of the top plate 3 and the base 1, lifting lead screws 31 are rotatably installed through bearings. Between the two lifting lead screws 31, a lifting plate 2 is installed in a lifting manner through a lifting nut 21. The four corners of the lifting plate 2 are respectively slidably sleeved on the four columns 11 up and down. A upper die holder 22 is fixed below the lifting plate 2, and a pressing plate 23 is fixed inside the upper die holder 22; At the left and right ends below the base 1, two sets of translation lead screws 44 are rotatably installed through bearing seats. Between the two sets of translation lead screws 44, a translation plate 45 is installed in a front and back moving manner. The lower end of the pressing mechanism 5 is slidably connected to the translation plate 45. On the translation plate 45, a pushing structure 46 for driving the lower die holder 4 is symmetrically arranged left and right;

[0020] Refer to Figure 6 , An air port is formed through the pressing plate 23 up and down. At the top of the upper die holder 22, an air inlet pipe 24 and an air outlet pipe 25 are respectively welded. The air inlet pipe 24 and the air outlet pipe 25 both pass through the lifting plate 2 and are above it. The bottom end of the air inlet pipe 24 is communicated with the air port. The workpiece 6 is provided with a notch for wire routing. The air port on the pressing plate 23 corresponds to the position and size of the notch on the workpiece 6. And a sealing ring protrudes from the lower part of the air port of the pressing plate 23, and a sealing gasket is also arranged at the peripheral edge of the lower part of the upper die holder 22; A tee pipe is connected to the air inlet pipe 24. One end of the tee pipe is communicated with an external nitrogen generator through a hose and a one-way valve, and the other end is connected to a vacuum pump through a hose and a one-way valve. The air outlet pipe 25 is connected to an external gas leak detector through a hose; The upper die holder 22 and the pressing plate 23 can move downward under the action of the lifting plate 2, so that the bottom end of the upper die holder 22 and the upper surface of the lower die holder 4 are tightly pressed to form a sealing structure. After the upper die holder 22 and the lower die holder 4 are pressed together, the pressing plate 23 will also press on the workpiece 6. And at this time, the air port of the pressing plate 23 is attached to the notch of the workpiece 6. The nitrogen generated by the nitrogen generator will enter the inner cavity of the workpiece 6 through the hose and the air inlet pipe 24. Nitrogen is filled in the workpiece 6 and kept under pressure for a period of time. During this process, the gas leak detector will detect the gas between the upper die holder 22 and the lower die holder 4. If the sealing performance of the workpiece 6 is insufficient, the nitrogen inside it will leak and be detected by the gas leak detector. Otherwise, it meets the requirements. After the detection is completed, the gas inside the workpiece 6 is pumped out by the vacuum pump, and then the upper die holder 22 and the pressing plate 23 can move upward.

[0021] Refer to Figure 2 , Figure 6 AndFigure 9 Above the base 1, two moving rails 42 are symmetrically arranged on the left and right. The lower die holder 4 is slidably mounted on the two moving rails 42 through moving sliders. A plurality of uniformly distributed threaded holes are formed on the upper end surface of the lower die holder 4. A positioning rod 41 is threadedly connected in the threaded hole. The bottom end of the positioning rod 41 is provided with a threaded section, and an abutting column is arranged above it. The abutting column contacts the side surface of the workpiece 6. The position distribution of the plurality of positioning rods 41 is adjusted according to the actual size of the workpiece 6, so that the workpiece 6 is placed in the space formed by the plurality of positioning rods 41 for rapid positioning, thereby ensuring that the notch on the workpiece 6 is directly below the air port of the pressing plate 23; On the front side of the lower end surface of the lower die holder 4, two groups of push plates 43 are symmetrically arranged on the left and right. At the front and rear ends of the middle part below the lower die holder 4, an adsorption plate 47 is respectively arranged. At the front and rear sides of the middle part of the upper end of the base 1, an adsorbent 7 is respectively fixed. The position of the adsorbent 7 corresponds to the position of the adsorption plate 47. The adsorption plate 47 and the adsorbent 7 are made of magnetizable materials as required. When the lower die holder 4 moves to the frontmost or rearmost end along the moving rail 42, the adsorption plate 47 and the adsorbent 7 can adsorb each other, which can position the lower die holder 4 and prevent the lower die holder 4 from shaking, and also improves the stability.

[0022] Refer to Figure 1 、 Figure 4 and Figure 6 The tops of the two lifting lead screws 31 pass through the top plate 3 and are located above it, and the two lifting lead screws 31 are connected to the output shaft of the driving motor through a toothed belt and toothed belt wheels; The bottom ends of the lifting lead screws 31 pass through the base 1 and are located below it. A driving bevel gear 311 is installed on the part of the lifting lead screw 31 below the base 1. A driven bevel gear 441 is installed at one end of the translation lead screw 44 close to the lifting lead screw 31. The driven bevel gear 441 meshes with the driving bevel gear 311. Moving screw seats are arranged at both the left and right ends of the translation plate 45. The translation plate 45 is threadedly connected to the translation lead screw 44 through the moving screw seats. When the lifting lead screw 31 rotates forward under the action of the driving motor, the lifting lead screw 31 will cause the lifting plate 2 to move downward through the lifting screw seat 21. At the same time, the lifting lead screw 31 will cause the translation lead screw 44 to rotate synchronously through the driving bevel gear 311 and the driven bevel gear 441, thereby causing the translation plate 45 to move backward, and vice versa.

[0023] Refer to Figure 2 - Figure 5, on the upper end of the base 1, two driving grooves 12 are symmetrically formed on the left and right sides. On the translation plate 45, two offset grooves 451 are symmetrically formed on the left and right. The pushing structure 46 includes two contact rollers 461 slidably disposed above the base 1. The tops of the two contact rollers 461 are connected by a U-shaped frame 462. The bottom end of one contact roller 461 away from the lifting lead screw 31 is lengthened downward to form a guide rod 463. The top of the contact roller 461 does not contact the lower surface of the lower die base 4. The guide rod 463 passes through the driving groove 12 and extends into the offset groove 451. The cross-section of the offset groove 451 is in a convex shape. A roller is provided at the bottom end of the guide rod 463, and the roller rolls in the offset groove 451. The guide rod 463 enables the two contact rollers 461 to move back and forth together with the translation plate 45, and the two contact rollers 461 can also move left and right along the offset groove 451.

[0024] The driving groove 12 includes a horizontally designed contact groove 121 and an extension groove 123. The extension groove 123 is located behind the base 1, and the contact groove 121 and the extension groove 123 are connected by an inclined away groove 122. The distance between the extension groove 123 and the side surface of the base 1 is smaller than the distance between the contact groove 121 and the side surface of the base 1. The distance between the two contact rollers 461 in the same group is greater than the distance between the rear end of the contact groove 121 and the front end of the extension groove 123; When the guide rod 463 moves along the contact groove 121, the positions of the two contact rollers 461 away from the side surface of the base 1 remain unchanged. At this time, the front and rear contact rollers 461 are respectively located directly in front of and directly behind the pushing plate 43. When the guide rod 463 moves to the away groove 122 and slides along it, the two contact rollers 461 will gradually move outward. When the guide rod 463 moves to the intersection of the extension groove 123 and the away groove 122, at this time, the outer side surface of the pushing plate 43 is tangent to the surface of the contact roller 461, and the lower die base 4 moves to the rearmost end. The adsorption plate 47 behind the lower die base 4 contacts and adsorbs the rear adsorbent 7. At this time, the lower die base 4 will not continue to move backward.

[0025] Refer to Figure 6 - Figure 9 , on the left and right sides above the base 1, two through connection strip openings 13 are symmetrically formed. The pressing mechanism 5 includes a guide sleeve 51 embedded in the lower die base 4. A lifting rod 53 is slidably inserted up and down in the guide sleeve 51. The bottom end of the lifting rod 53 passes through the through connection strip opening 13 and is located below the base 1. An installation frame 52 is fixed above the lower die base 4. The upper end of the lifting rod 53 slidably passes through the top of the installation frame 52 and is located above it. A pressing member 54 is installed on the lifting rod 53. The lower surface of the pressing member 54 close to the workpiece 6 is pressed against the workpiece 6. A pressing spring 55 is sleeved on the lifting rod 53, and the two ends of the pressing spring 55 are respectively abutted against the installation frame 52 and the pressing member 54; There are two jacking frames 452 symmetrically arranged on the left and right of the translation plate 45. A jacking inclined surface 453 is formed by removing a part of the front end of the jacking frame 452. The bottom end of the lifting rod 53 is designed with a semi-circular structure. When the lower die base 4 is directly below the upper die base 22, the bottom end of the lifting rod 53 is in sliding contact with the upper surface of the translation plate 45. At this time, the pressing member 54 contacts the workpiece 6 and presses it tightly. When the lower die base 4 is at the forefront, the bottom end of the lifting rod 53 is in sliding contact with the upper surface of the jacking frame 452. At this time, the lifting rod 53 makes the pressing member 54 at a higher height and does not press the workpiece 6 tightly, which is convenient for removing the workpiece 6 and placing a new workpiece 6.

[0026] Two groups of symmetrically distributed deflection grooves 511 are formed in the inner wall of the guide sleeve 51. Two deflecting heads 531 are symmetrically arranged on the outer surface of the lifting rod 53. The deflecting heads 531 slide in the deflection grooves 511. The deflection groove 511 is a kind of spiral groove with 1 / 4 turn. When the lifting rod 53 slides up and down inside the guide sleeve 51, the lifting rod 53 can rotate along the deflection groove 511 through the deflecting heads 531, so that the pressing member 54 fixed on the lifting rod 53 deflects accordingly. When the deflecting head 531 is at the lowest position, the pressing member 54 presses the workpiece 6 tightly. When the deflecting head 531 is at the highest position, the pressing member 54 releases the pressing on the workpiece 6.

[0027] An upper opening 541 is formed through the upper and lower surfaces of the pressing member 54, and side openings 542 are formed through the front and rear surfaces of the pressing member 54. The lifting rod 53 slides up and down and is inserted into the upper opening 541. Two symmetrically distributed screw rods are fixed on the side surface of the lifting rod 53. The two screw rods respectively pass through the two side openings 542 and nuts are tightened on the screw rods. Loosen the two nuts so that the pressing member 54 can slide and adjust along the upper opening 541 and the side openings 542. After moving to the required length, tighten the nuts again to make it suitable for workpieces 6 of various different sizes.

[0028] A threaded hole is formed through the upper and lower ends of the pressing member 54 near the workpiece 6. A bolt is threadedly connected in the threaded hole. The bottom end of the bolt passes through the thread and is located below the pressing member 54, and a pressing head 543 is fixed at the bottom end of the bolt. The pressing head 543 is used to press the workpiece 6 tightly, and the height of the pressing head 543 can be changed by screwing the bolt, so as to be suitable for pressing workpieces 6 of various different thicknesses.

[0029] Working principle: In the initial state, the lower die holder 4 is at the frontmost position, and the adsorption plate 47 on the front side below the lower die holder 4 is adsorbed and connected to the adsorption accessory 7 on the front side. The lifting plate 2 is at the uppermost position. At this time, the translation plate 45 is also at the frontmost position, and the contact roller 461 on the rear side contacts the rear surface of the push plate 43. The bottom end of the lifting rod 53 is also above the lifting frame 452. At this time, the deflecting head 531 on the lifting rod 53 is at the uppermost position of the deflecting groove 511. There is a certain height between the bottom end of the pressing member 54 and the upper surface of the flange of the workpiece 6, and the pressing member 54 is parallel to the side surface of the workpiece 6.

[0030] During detection, the workpiece 6 is directly placed on the lower die holder 4, and the workpiece 6 is located between multiple positioning rods 41. Then, the driving motor rotates forward, and the two lifting lead screws 31 rotate synchronously forward. When the lifting lead screws 31 rotate forward, the lifting lead screws 31 will cause the lifting plate 2 and the upper die holder 22 to move downward together through the lifting nuts 21. At the same time, the lifting lead screws 31 will cause the translation lead screw 44 to rotate synchronously through the driving bevel gear 311 and the driven bevel gear 441, thereby causing the translation plate 45 to move backward; During the backward movement of the translation plate 45, the translation plate 45 will also pull the guide rod 463 to move linearly backward along the contact groove 121, causing the contact roller 461 on the front side to move closer to the push plate 43. At this time, the lower die holder 4 remains in place under the suction force of the adsorption plate 47 and the adsorption accessory 7 until the contact roller 461 on the front side contacts the push plate 43; During the process of the contact roller 461 on the front side moving closer to the push plate 43, the lifting frame 452 on the translation plate 45 will move backward together. The bottom end of the lifting rod 53 will gradually approach the lifting inclined surface 453 along the upper surface of the lifting frame 452 and move onto the lifting inclined surface 453. When it moves above the lifting inclined surface 453 and moves toward the surface of the translation plate 45, the lifting rod 53 gradually moves downward under the action of the downward pressure spring 55. During the downward movement of the lifting rod 53, the deflecting head 531 on the lifting rod 53 will also deflect along the deflecting groove 511, thereby causing the lifting rod 53 and the pressing member 54 to deflect. When the bottom end of the lifting rod 53 contacts the translation plate 45, the pressing member 54 is completely deflected at this time, and the pressing head 543 of the pressing member 54 presses on the flange of the workpiece 6 to clamp the workpiece 6; At this time, the translation plate 45 continues to move backward, and the contact roller 461 on the front side contacts the front surface of the push plate 43. The push plate 43 is driven to move backward synchronously by the contact roller 461 on the front side. The backward moving push plate 43 will drive the lower die holder 4 to move backward together, and there is no relative sliding between the lifting rod 53 and the translation plate 45; When the translation plate 45 drives the lower die base 4 to move to a certain distance in front of the lower part of the upper die base 22, the guide rod 463 on the translation plate 45 slides left and right along the contact groove 121 to slide into the away groove 122. When the translation plate 45 drives the guide rod 463 to continue to move backward in the away groove 122, the guide rod 463 will gradually approach the side of the base 1, and the guide rod 463 will then drive the two contact rollers 461 to approach the side of the base 1 together, that is, the contact roller 461 is away from the middle of the push plate 43, but in this process, the contact roller 461 and the push plate 43 are not separated, and the contact roller 461 will still drive the push plate 43 to move backward; When the guide rod 463 moves to the intersection of the groove 122 and the extension groove 123, the two contact rollers 461 are completely out of contact with the push plate 43, and the lower die base 4 is also directly below the upper die base 22. At the same time, the adsorption plate 47 on the rear side of the lower die base 4 is adsorbed and fixed to the adsorption member 7 on the rear side. At this time, the upper die base 22 is still at a certain height above the workpiece 6. Then the lifting plate 2 continues to move downward, and the translation plate 45 continues to move backward. Since the contact roller 461 does not contact the push plate 43, it cannot be pushed. The lifting plate 2 drives the upper die base 22 to be pressed on the lower die base 4. After the upper die base 22 is pressed together with the lower die base 4, the bottom end of the upper die base 22 and the upper surface of the lower die base 4 are tightly pressed together to form a sealing structure, and the pressing plate 23 will also be pressed on the workpiece 6. At this time, the air port of the pressing plate 23 is attached to the groove of the workpiece 6. The nitrogen generated by the nitrogen generator will enter the inner cavity of the workpiece 6 through the hose and the air inlet pipe 24. The interior of the workpiece 6 is filled with nitrogen and the pressure is maintained for a period of time. During this process, the gas leak detector will detect the gas between the upper die base 22 and the lower die base 4. If the sealing performance of the workpiece 6 is not enough, the nitrogen inside it will leak and be detected by the gas leak detector. Otherwise, it meets the requirements.

[0031] After the detection is completed, the gas inside the workpiece 6 is pumped out by the vacuum pump, and then the driving motor rotates in the opposite direction, and then the lifting plate 2, the upper die seat 22 and the pressing plate 23 are moved upward together through the two lifting screws 31. When the lifting plate 2 moves upward, the lifting screw 31 will also cause the two translation screws 44 to rotate in the opposite direction together, and then the translation plate 45 moves forward under the action of the translation screw 44. Since there is a certain distance between the two contact rollers 461 and the pushing plate 43, when the lifting plate 2 rises and the upper die seat 22 and the pressing plate 23 are separated from the workpiece 6 and the lower die seat 4, the entire lower die seat 4 is in place and will not be offset, thereby avoiding damage caused by the collision between the two. When the upper die base 22 is separated from the lower die base 4, the workpiece 6 is in a sealed state inside, and the notch above it is fitted with the pressure plate 23, and the gas content in the inner cavity of the workpiece 6 is small or even non-existent, which may cause the workpiece 6 to directly stick to the lower pressure plate 23. At this time, the lower pressing member 54 still presses the workpiece 6 and can exert a downward force on the workpiece 6. Even if the adsorption force is greater than the force of the lower pressure spring 55 and the rising height of the lower pressing member 54 is limited, the workpiece 6 can be separated from the adsorption connection with the pressure plate 23, so that the workpiece 6 remains on the lower die base 4. When the lifting plate 2 continues to move upward so that the translation plate 45 continues to move forward, the lifting inclined surface 453 on the translation plate 45 will contact the bottom end of the lifting rod 53 and push the lifting rod 53 to move upward along the guide sleeve 51. When the lifting rod 53 moves upward, the lifting rod 53 will also be deflected along the deflection groove 511 by the deflection head 531, so that the pressing member 54 is away from the workpiece 6, thereby releasing the clamping limit on the workpiece 6; After that, the lifting plate 2 continues to move upward, and the translation plate 45 will also continue to move forward. When the front contact roller 461 leaves the extension groove 123 and enters the away groove 122, the front contact roller 461 is located on the positive side of the push plate 43. When the translation plate 45 drives the two contact rollers 461 to continue to move forward through the guide rod 463, the two contact rollers 461 will also gradually move toward the middle of the base 1. When the front contact roller 461 is separated from the away groove 122 and enters the contact groove 121, the front contact roller 461 is located at the front side of the push plate 43, and the rear contact roller 461 is located at the rear side of the push plate 43. When the translation plate 45 continues to drive the two contact rollers 461 to move forward, the contact roller 461 on the rear side will contact the push plate 43 and drive the push plate 43 to move forward, thereby causing the entire lower mold base 4 to move forward together until the lower mold base 4 is at the frontmost side, and the front adsorption plate 47 is adsorbed with the front adsorption part 7. During this process, the lifting rod 53 is on the upper surface of the lifting frame 452 and remains unchanged. There is a certain height between the bottom end of the lower pressing part 54 and the upper surface of the edge wing of the workpiece 6, and the lower pressing part 54 is parallel to the side of the workpiece 6. The workpiece 6 can be removed and a new workpiece 6 can be placed for the next inspection. The above operation can be repeated.

[0032] The upper die holder 22 is installed above the base 1 in a lifting manner through the lifting lead screw 31, and a pressing plate 23 is installed inside the upper die holder 22. The lower die holder 4 is slidably installed on the front and rear of the upper surface of the base 1. A linkage design is adopted between the lower die holder 4 and the upper die holder 22 through the lifting lead screw 31, the translation lead screw 44, the translation plate 45, and the pushing structure 46. When the lower die holder 4 moves, the upper die holder 22 can synchronously descend. After the lower die holder 4 moves in place, the upper die holder 22 is at a certain height above the lower die holder 4 and can continue to move downward, avoiding excessive downward movement of the upper die holder 22 when the lower die holder 4 is not completely stationary, which may cause abnormal wear of the guide rail or product collision. It also ensures that the lower die holder must be below the upper die holder 22, improving the detection accuracy. The pressing mechanism 5 is slidably arranged on the front and rear above the base 1, and the lower end of the pressing mechanism 5 is connected to the translation plate 45. The pressing mechanism 5 enables the lower die holder 4 to press and position the workpiece 6 located above it before moving, ensuring that its position will not shift during the movement, improving the detection accuracy. After the subsequent detection is completed, the pressing mechanism 5 can also ensure that the workpiece 6 will not be adsorbed on the pressing plate 23, thereby facilitating the rapid removal of the workpiece 6.

[0033] In the description of the present invention, it should be understood that the orientation or positional relationship indicated by the terms "center", "longitudinal", "transverse", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", etc. is based on the orientation or positional relationship shown in the drawings. It 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 to the present invention.

[0034] In addition, the terms "first" and "second" are only used for descriptive purposes and cannot be construed as indicating or implying relative importance or implicitly specifying the quantity of the indicated technical features. Thus, the features defined with "first" and "second" may explicitly or implicitly include one or more of such features. In the description of the present invention, "a plurality" means two or more unless otherwise specifically defined.

[0035] The above is only a preferred specific embodiment of the present invention, but the protection scope of the present invention is not limited thereto. Any person skilled in the art within the technical scope disclosed by the present invention, according to the technical solution and inventive concept of the present invention, makes equivalent substitutions or changes, and should be covered by the protection scope of the present invention.

Claims

1. A performance detection device for automobile parts production, characterized in that, It includes a base (1), on the upper surface of the base (1), a lower die holder (4) is installed to move back and forth. A workpiece (6) is placed above the lower die holder (4). On the left and right sides of the lower die holder (4), two sets of pressing mechanisms (5) for pressing the workpiece (6) are symmetrically arranged. At the rear half part above the base (1), a top plate (3) is fixedly suspended by four columns (11). At the left and right ends of the top plate (3) and the base (1), lifting lead screws (31) are rotatably installed through bearings. Between the two lifting lead screws (31), a lifting plate (2) is installed to move up and down through a lifting nut (21). Below the lifting plate (2), an upper die holder (22) is fixed. Inside the upper die holder (22), a pressing plate (23) is fixed. At the left and right ends below the base (1), two sets of translation lead screws (44) are rotatably installed through bearing seats. Between the two sets of translation lead screws (44), a translation plate (45) is installed to move back and forth. The lower end of the pressing mechanism (5) is slidably connected to the translation plate (45). On the translation plate (45), a pushing structure (46) for driving the lower die holder (4) is symmetrically arranged on the left and right.

2. The performance detection device for the production of automotive parts according to claim 1, wherein, An air port is formed through the pressing plate (23) up and down. At the top of the upper die holder (22), an air inlet pipe (24) and an air outlet pipe (25) are respectively welded. Both the air inlet pipe (24) and the air outlet pipe (25) pass through the lifting plate (2) and are above it. The bottom end of the air inlet pipe (24) is communicated with the air port.

3. A performance detection device for automotive parts production according to claim 1, characterized in that, On the left and right sides above the base (1), two moving tracks (42) are symmetrically arranged. The lower die holder (4) is slidably installed back and forth on the two moving tracks (42) through moving sliders. On the upper end surface of the lower die holder (4), a plurality of uniformly distributed threaded holes are formed. Positioning rods (41) are threadedly connected in the threaded holes. On the front side of the lower end surface of the lower die holder (4), two sets of pushing plates (43) are symmetrically arranged on the left and right. At the front and rear ends of the middle part below the lower die holder (4), an adsorption plate (47) is respectively arranged. At the front and rear sides of the middle part of the upper end of the base (1), an adsorbing component (7) is respectively fixed.

4. A performance detection device for automobile part production according to claim 1, characterized in that, The top ends of the two lifting lead screws (31) pass through the top plate (3) and are above it. Between the two lifting lead screws (31), they are connected to the output shaft of a driving motor through a toothed belt and toothed belt wheels. The bottom ends of the lifting lead screws (31) pass through the base (1) and are below it. On the part of the lifting lead screw (31) below the base (1), a driving bevel gear (311) is installed. At one end of the translation lead screw (44) close to the lifting lead screw (31), a driven bevel gear (441) is installed. The driven bevel gear (441) meshes with the driving bevel gear (311). At the left and right ends of the translation plate (45), moving nuts are arranged. The translation plate (45) is threadedly connected to the translation lead screw (44) through the moving nuts.

5. The performance detection device for the production of automotive parts according to claim 1, characterized in that, On the upper end of the base (1), two driving grooves (12) are symmetrically formed on the left and right sides. On the translation plate (45), two offset grooves (451) are symmetrically formed on the left and right. The pushing structure (46) includes two contact rollers (461) slidably disposed above the base (1). The tops of the two contact rollers (461) are connected by a U-shaped frame (462). The bottom end of one contact roller (461) far from the lifting lead screw (31) is extended downward to form a guiding rod (463). The top of the contact roller (461) does not contact the lower surface of the lower die base (4). The guiding rod (463) passes through the driving groove (12) and extends into the offset groove (451).

6. The performance detection device for automotive component production according to claim 5, characterized in that, The driving groove (12) includes a horizontally designed contact groove (121) and an extension groove (123). The extension groove (123) is located behind the base (1). The contact groove (121) and the extension groove (123) are connected by an inclined away groove (122). The distance between the extension groove (123) and the side surface of the base (1) is smaller than the distance between the contact groove (121) and the side surface of the base (1). The distance between two contact rollers (461) in the same group is greater than the distance between the rear end of the contact groove (121) and the front end of the extension groove (123).

7. A performance detection device for the production of automotive parts according to claim 1, characterized in that, On the upper end of the base (1), two through connection strip openings (13) are symmetrically formed on the left and right sides. The pressing mechanism (5) includes a guiding sleeve (51) embedded in the lower die base (4). An elevating rod (53) is slidably inserted up and down in the guiding sleeve (51). The bottom end of the elevating rod (53) passes through the through connection strip opening (13) and is located below the base (1). An installation frame (52) is fixed above the lower die base (4). The upper end of the elevating rod (53) slidably passes through the top of the installation frame (52) and is located above it. A pressing member (54) is installed on the elevating rod (53). The lower surface of the side of the pressing member (54) close to the workpiece (6) is pressed against the workpiece (6). A pressing spring (55) is sleeved on the elevating rod (53). The two ends of the pressing spring (55) are respectively abutted against the installation frame (52) and the pressing member (54). On the translation plate (45), two jacking frames (452) are symmetrically arranged on the left and right. The front end of the jacking frame (452) is partially cut off to form a jacking inclined surface (453). The bottom end of the elevating rod (53) is designed in a semi-circular structure.

8. An automotive part production performance detection device according to claim 7, characterized in that, On the inner wall of the guiding sleeve (51), two groups of symmetrically distributed deflection grooves (511) are formed. On the outer surface of the elevating rod (53), two deflecting heads (531) are symmetrically arranged. The deflecting heads (531) are slidably disposed in the deflection grooves (511).

9. The performance detection device for the production of automotive parts according to claim 7, wherein, An upper opening (541) is formed through the upper and lower surfaces of the pressing member (54). A side opening (542) is formed through the front and rear surfaces of the pressing member (54). The elevating rod (53) is slidably inserted up and down in the upper opening (541). Two symmetrically distributed screw rods are fixed on the side surface of the elevating rod (53).

10. A performance detection device for automotive parts production according to claim 7, characterized in that, A threaded hole is formed through the pressing member (54) from top to bottom near one end close to the workpiece (6). A bolt is threadedly connected in the threaded hole. The bottom end of the bolt passes through the thread and is located below the pressing member (54), and a pressing head (543) is fixed to the bottom end of the bolt.

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