Size detection device for automobile bumper

Abstract

The invention provides a size detection device for an automobile bumper, and the device comprises a reference station which is provided with a mold core support; one side of the mold core is connected with the mold core support, and the other side of the mold core is provided with a molded surface attached to the bumper; the calipers are arranged on the reference table through caliper mounting seats, ejector rods are arranged at the contact ends, and the operating ends of the calipers are pushed to enable the ejector rods to press the bumper on the molded surface; the clamping plates are arranged on the reference table through clamping plate mounting seats, the lower ends of the clamping plates are rotationally connected with the clamping plate mounting seats, the upper ends of the clamping plates are provided with contour grooves matched with the outer contour of the bumper, and detection gaps are formed between the contour grooves and the outer contour of the bumper when the clamping plates are rotated to detection positions; and when the through rod can pass through the gap and the stop rod cannot pass through the gap, the size of the bumper is compliant with the gauge. The mold core and the calipers are matched to lock the position of the bumper, so that the detection process is stable and efficient, and the detection precision is effectively improved; when products of different specifications are detected, only the mold core and the clamping plate need to be replaced, operation is convenient, and errors are small.

Description

Technical Field

[0001] The invention relates to the technical field of bumper detection equipment, in particular to a size detection device for an automobile bumper. Background Art

[0002] The car bumper is a safety device that absorbs and mitigates external impact and protects the front and rear parts of the car body. In the automobile manufacturing process, the bumper is an important safety component, and its dimensional accuracy is directly related to the collision safety and appearance of the vehicle.

[0003] When inspecting the size of a bumper, its length and the size of the protruding contour surface are generally inspected. Existing methods for inspecting the size of a bumper mostly rely on manual measurement: placing the bumper on a testing platform, fixing it with a fixture, and measuring its length and contour surface size with a caliper. The disadvantages are low efficiency and insufficient inspection accuracy.

[0004] The prior art also designs an inspection tool for the front bumper of a car. A number of positioning columns are arranged on the tool base, and a check block is arranged on the top of the positioning column for placing the bumper. The degree of fit between the check block and the bumper is used to judge whether the bumper is qualified. The inspection speed and accuracy are greatly improved compared with the inspection method composed of a fixture and a caliper.

[0005] Its defects are: for different bumpers, it is necessary to adjust the setting position of the positioning column and replace the inspection block of appropriate size for inspection. In addition, the position of the bumper cannot be locked, and there are errors when inspecting the fit between each inspection block and the bumper at the corresponding position, and the inspection accuracy is still insufficient.

[0006] Therefore, it is necessary to improve the existing technology. Summary of the invention

[0007] The present invention provides a size detection device for an automobile bumper, which is used to solve the above problem.

[0008] A technical solution adopted by the present invention is to provide a size detection device for a car bumper, comprising:

[0009] A reference platform, on which a core support is arranged;

[0010] A core, one side of which is connected to the core support and the other side of which has a profile that fits the bumper;

[0011] A plurality of calipers, wherein the calipers are arranged on the reference platform through caliper mounting seats, and a push rod is arranged at the contact end thereof. When the bumper is placed on the core, the operating end of the caliper is pushed to make the push rod press the bumper;

[0012] A plurality of card plates, the card plates are arranged on the reference platform through card plate mounting seats, the lower end of the card plates is rotatably connected to the card plate mounting seats, the upper end of the card plates has a contour groove matching the outer contour of the bumper, when the bumper is pressed, the card plates are rotated to the detection position, and a detection gap is formed between the contour groove and the outer contour of the bumper;

[0013] The stop gauge has a through rod at one end and a stop rod at the other end. The diameter of the through rod is smaller than the stop rod. When the through rod can pass through the gap but the stop rod cannot, the bumper size is compliant.

[0014] Furthermore, the card plate mounting seat and the corresponding card plate are both provided with locking holes. When the card plate is rotated to the detection position, the locking pin is inserted into the locking hole to fix the position of the card plate to prevent it from moving during the detection process.

[0015] Furthermore, a locking pin placement seat is also arranged next to each of the card mounting seats, and the locking pin placement seat has a vertical through hole for placing the corresponding locking pin.

[0016] Furthermore, the core bracket is composed of a plurality of independent brackets. When the size of the bumper to be detected varies greatly, the number of independent brackets can be increased or decreased and the spacing between them can be adjusted according to the size of the core.

[0017] Furthermore, the push rod is connected to the contact end of the caliper through an extension rod, so that when the caliper is opened to a non-working state, more space can be left for placing the bumper.

[0018] Furthermore, the reference platform is also provided with reference lines for fixing and calibrating the core support, the caliper mounting seat and the clamping plate mounting seat.

[0019] Furthermore, a pressure sensor is provided at the end of the push rod for detecting the pressure value when the push rod presses the bumper, and a corresponding pressure display module is provided on the reference platform, which is electrically connected to each pressure sensor for displaying each pressure value.

[0020] Furthermore, a fine-tuning knob is provided on the push rod for making slight position adjustments to the push rod to adjust the pressure on the bumper, thereby ensuring that the bumper is evenly stressed during the detection process and avoiding detection errors caused by excessive or insufficient pressure.

[0021] Furthermore, the fine-tuning knob can accurately adjust the position of the ejector rod to ensure that the pressing pressure is within an error range of ±5%.

[0022] Furthermore, when a certain pressure value exceeds the error range, the corresponding indicator light on the pressure display module lights up, prompting the operator to adjust the fine-tuning knob.

[0023] The beneficial effects of the size detection device for automobile bumper of the present invention are:

[0024] 1. The core and caliper work together to lock the bumper position, and a go gauge is used to detect the gap between the contour groove of the card plate and the outer contour of the bumper to determine whether the bumper size is compliant. The detection process is stable, which effectively improves the inspection accuracy of the bumper size;

[0025] 2. In most cases, when testing bumpers of different specifications, it is only necessary to replace the corresponding core and pallet, and the position of the core bracket and the pallet mounting seat remains unchanged, so that the positioning of each structure is accurate and the error is effectively reduced. BRIEF DESCRIPTION OF THE DRAWINGS

[0026] Figure 1 is a top view of a size detection device for a vehicle bumper according to a first embodiment of the present invention;

[0027] Figure 2 1 is a side view of a size detection device for a vehicle bumper according to a first embodiment of the present invention;

[0028] Figure 3 is a three-dimensional diagram of a size detection device for a vehicle bumper according to a first embodiment of the present invention;

[0029] The markings of the components in the accompanying drawings are as follows: 1. reference table, 2. core bracket, 3. core, 4. bumper, 5. caliper mounting seat, 6. caliper, 7. pallet mounting seat, 8. pallet, 9. stop gauge, 11. locking pin placement seat, 12. locking pin, 13. stop gauge holder, 61. handle, 62. extension rod, 63. push rod, 81. locking hole. DETAILED DESCRIPTION

[0030] The preferred embodiments of the present invention are described in detail below in conjunction with the accompanying drawings so that the advantages and features of the present invention can be more easily understood by those skilled in the art, thereby making a clearer and more definite definition of the protection scope of the present invention.

[0031] In the description of the present invention, it should be understood that the terms "up", "down", "left", "right", "front", "back", "horizontal", "vertical", "inside", "outside", etc., indicating directions or positional relationships, are based on the directions or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention. They cannot indicate or imply that the components or elements referred to must have a specific direction, be constructed and operated in a specific direction, and therefore cannot be understood as limiting the present invention.

[0032] See also Figures 1 to 3 The first embodiment of the present invention provides a size detection device for a vehicle bumper 4, comprising:

[0033] A reference platform 1 is provided with a core support 2, the core support 2 is composed of four independent supports, which are arranged in a straight line, and each independent support is detachably connected to the reference platform 1;

[0034] The core 3 has one side connected to each independent bracket and the other side having a profile that fits the bumper 4;

[0035] The bumper 4 to be tested is placed on the mold surface of the core 3;

[0036] Four calipers 6 are arranged on the reference platform 1 through a caliper mounting seat 5, and are located on the side of the bumper 4. The operating end of the caliper 6 is set as a handle 61, and the other end is a contact end. A push rod 63 is arranged perpendicular to the contact end. When the bumper 4 is placed on the core, the handle 61 is pushed to make the push rod 63 press the bumper 4;

[0037] Three card plates 8 are arranged on the reference platform 1 through the card plate mounting seat 7, and are spaced apart between the calipers. The lower end of the card plate 8 is rotatably connected with the card plate mounting seat 7 and is locked in the detection position through a pin hole structure. The upper end of the card plate 8 has a contour groove that matches the outer contour of the bumper 4. When the bumper 4 is pressed, the card plate is rotated to the detection position, and a detection gap is formed between the contour groove and the outer contour of the bumper 4.

[0038] The through gauge 9 is of model φ4-φ7. φ4 is a through gauge, which must be able to pass when the gap is detected with a through rod. φ7 is a stop gauge, which cannot pass when the gap is detected with a stop rod. At this time, the size of bumper 4 is compliant.

[0039] Specifically, reference lines for fixing and calibrating the core support 2 , the caliper mounting seat 5 and the clamping plate mounting seat 7 are drawn on the reference platform 1 .

[0040] Specifically, a stop gauge holder 13 is also provided on the reference platform 1 for placing the stop gauge.

[0041] Specifically, the caliper is originally a tool for measuring length, and is used here to push the push rod 63 to press the bumper 4 to play a locking role. An extension rod 62 is also provided at the contact end of the caliper. The push rod 63 is set at the upper end of the extension rod 62 and is perpendicular to the extension rod 62. When the caliper is opened to a non-working state, more space can be left for the placement of the bumper 4.

[0042] The card mounting seat 7 and the corresponding card are both provided with locking holes 81. When the card is rotated to the detection position, the locking pin 12 is inserted into the locking hole 81 to fix the position of the card to prevent it from moving during the detection process.

[0043] Specifically, a locking pin placement seat 11 is also provided next to the card mounting seat 7. The locking pin placement seat 11 has a vertical through hole for placing a corresponding locking pin.

[0044] A pressure sensor is provided at the end of the push rod 63 for detecting the pressure value when the push rod 63 presses the bumper 4. A corresponding pressure display module is provided on the reference platform 1 and is electrically connected to each pressure sensor for displaying each pressure value.

[0045] The push rod 63 is provided with a spiral fine-tuning knob with scale values, which is used to make slight position adjustments to the push rod 63 to adjust the pressure on the bumper 4, ensuring that the bumper 4 is evenly stressed during the detection process and avoiding detection errors caused by excessive or insufficient pressure.

[0046] Specifically, the spiral fine-tuning knob can accurately adjust the position of the push rod 63 to ensure that the clamping pressure is within the error range of ±5%. When a certain pressure value exceeds the error range, the corresponding indicator light on the pressure display module lights up to prompt the operator to adjust.

[0047] The size detection device of the automobile bumper 4 of the present invention can detect not only the outer contour of the bumper 4, but also the length thereof in the horizontal direction:

[0048] There are length tolerance lines engraved on the left and right ends of the core surface. Taking the product length tolerance of ±6mm as an example, +6mm, 0, -6mm tolerance lines are engraved on the core. Visually check whether the product shape is within the tolerance lines. If so, it is qualified.

[0049] The working method of the size detection device of the automobile bumper of the present invention is:

[0050] With the clamp and caliper in a non-working state, install the bumper product from top to bottom and from the middle to both sides onto the mold surface of the core;

[0051] Turn the caliper to the working state to press the bumper tightly, and adjust the fine-tuning knob according to the pressure value so that the push rod presses the bumper with appropriate pressure;

[0052] Observe whether the two sides of the bumper are within the tolerance range, if so, the length is qualified;

[0053] Turn the card plate and lock it to the working state with the locking pin, and use the stop gauge to check whether the gap is qualified. If the through rods can pass through each gap but the stop rod cannot, the size is qualified;

[0054] Place the no-go gauge back into the no-go gauge holder, open the clamping plate and caliper to the non-working state, insert the locking pin into the corresponding locking pin placement seat, remove the product, and end the inspection.

[0055] The beneficial effects of the size detection device for automobile bumper of the present invention are:

[0056] 1. The core and caliper work together to lock the bumper position, and a go gauge is used to detect the gap between the contour groove of the card plate and the outer contour of the bumper to determine whether the bumper size is compliant. The detection process is stable, which effectively improves the inspection accuracy of the bumper size;

[0057] 2. In most cases, when testing bumpers of different specifications, it is only necessary to replace the corresponding core and pallet, and the position of the core bracket and the pallet mounting seat remains unchanged, so that the positioning of each structure is accurate and the error is effectively reduced;

[0058] 3. The real-time pressure value of the push rod is obtained through the setting of the sensor, and the position of the push rod is slightly adjusted through the fine-tuning knob, which can ensure that the bumper is evenly stressed during the inspection process and reduce the inspection error caused by excessive or insufficient pressure.

[0059] The above descriptions are merely embodiments of the present invention and are not intended to limit the patent scope of the present invention. Any equivalent structure or equivalent process transformation made using the contents of the present invention specification and drawings, or directly or indirectly applied in other related technical fields, are also included in the patent protection scope of the present invention.

Claims

1. A size detection device for a car bumper, characterized in that: include: A reference platform, on which a core support is arranged; A core, one side of which is connected to the core support and the other side of which has a profile that fits the bumper; A plurality of calipers, which are arranged on the reference platform through a caliper mounting seat, and a push rod is arranged at the contact end thereof. When the bumper is placed on the core, the operating end of the caliper is pushed to make the push rod press the bumper; a plurality of card plates, which are arranged on the reference platform through a card plate mounting seat, and the lower end of the card plate is rotatably connected to the card plate mounting seat, and the upper end of the card plate has a contour groove matching the outer contour of the bumper. When the bumper is pressed, the card plate is rotated to the detection position, and a detection gap is formed between the contour groove and the outer contour of the bumper; The stop gauge has a through rod at one end and a stop rod at the other end. The diameter of the through rod is smaller than the stop rod. When the through rod can pass through the gap but the stop rod cannot, the bumper size is compliant.

2. The size detection device for a vehicle bumper according to claim 1, characterized in that: The card plate mounting seat and the corresponding card plate are both provided with locking holes. When the card plate is rotated to the detection position, the locking pin is inserted into the locking hole to fix the position of the card plate.

3. The size detection device for a vehicle bumper according to claim 2, characterized in that: A locking pin placement seat is also arranged next to each of the card plate mounting seats, and the locking pin placement seat has a vertical through hole for placing the corresponding locking pin.

4. The size detection device for a vehicle bumper according to claim 2, characterized in that: The core support is composed of a plurality of independent supports.

5. The size detection device for automobile bumper according to claim 2, characterized in that: The push rod is connected to the contact end of the caliper through an extension rod.

6. The size detection device for a vehicle bumper according to claim 2, characterized in that: The reference platform is also provided with reference lines for fixing and calibrating the core support, the caliper mounting seat and the cardboard mounting seat.

7. A size detection device for a vehicle bumper according to any one of claims 1 to 6, characterized in that: A pressure sensor is provided at the end of the push rod for detecting the pressure value when the push rod presses the bumper. A corresponding pressure display module is provided on the reference platform and is electrically connected to each pressure sensor for displaying each pressure value.

8. The size detection device for automobile bumper according to claim 7, characterized in that: The push rod is provided with a fine adjustment knob for making a slight position adjustment on the push rod to adjust the pressure on the bumper.

9. The size detection device for automobile bumper according to claim 8, characterized in that: The fine-tuning knob can accurately adjust the position of the ejector rod to ensure that the pressing pressure is within an error range of ±5%.

10. The size detection device for automobile bumper according to claim 9, characterized in that: When a certain pressure value exceeds the error range, the corresponding indicator light on the pressure display module lights up, prompting the operator to adjust the fine-tuning knob.

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