Claw Height Synchronous Detection Device for Products with Multi-Bent Claws

Abstract

The present invention discloses a claw height synchronous detection device for products with multi-bending claws. The first mounting plate, the second mounting plate, and the third mounting plate are arranged in sequence from top to bottom. The first mounting plate is fixed to the sliding table mechanism and moves vertically in a straight line reciprocally with it synchronously. The upper end of the end face feedback mechanism is elastically connected to the first mounting plate. The second mounting plate and the third mounting plate are respectively fixed to the middle part and the lower part of the end face feedback mechanism. The eddy current digital displacement sensor is vertically penetrated and fixed on the second mounting plate. The claw height feedback mechanism is elastically connected to the third mounting plate. The lower end face of the claw height feedback mechanism is lower than the lower end face of the end face feedback mechanism. The claw height feedback mechanism, the bending claws, and the eddy current digital displacement sensor correspond to each other one by one. Through the cooperation of the claw height feedback mechanism and the end face feedback mechanism, the claw height of products with multi-bending claws can be synchronously detected. Through the detected displacement change, it is equally transmitted to the eddy current digital displacement sensor, so as to ensure that the transmitted displacement change amount is stable and accurate.

Description

Technical Field

[0001] The present invention relates to a device for detecting the claw height of products with bent claws, in particular to a device for synchronously detecting the claw height of products with multiple bent claws. Background Art

[0002] Figure 1 For the product shown, the side claw 1-1 is bent to form Figure 2 the bent claw 1-2 with the height h shown in. If the bending fixture is worn or foreign matters adhere to the surface of the claw, the bending size of the claw will be defective after bending. Since the size fluctuation range is very small, it cannot be effectively observed by the naked eye of a human. In order to prevent defective products from flowing out, it is necessary to detect the claw height after bending.

[0003] During detection, a high-speed and high-precision eddy current digital displacement sensor is usually used for detection. However, when detecting the claw height of a small product with multiple bent claws simultaneously, due to the need for a spacing installation between sensors, a large installation space is required. As a result, multiple sensors cannot effectively contact the bent claws of the product after being fixed. Therefore, it is difficult for the existing detection device to synchronously, quickly, stably and accurately detect multiple bent claws on a small detection product. Summary of the Invention

[0004] Object of the Invention: Aiming at the above problems, the object of the present invention is to provide a device for synchronously detecting the claw height of products with multiple bent claws, which can be quickly and effectively applied especially to small detection products.

[0005] Technical Solution: A device for synchronously detecting the claw height of a product with multiple bent claws includes a slide table mechanism that moves vertically in a straight line, an end face feedback mechanism vertically connected to a first mounting plate, an eddy current digital displacement sensor vertically penetrated and fixed on a second mounting plate, and a claw height feedback mechanism vertically penetrated and connected to a third mounting plate. The first mounting plate, the second mounting plate, and the third mounting plate are arranged in sequence from top to bottom. The first mounting plate is fixed to the slide table mechanism and moves vertically in a straight line synchronously with it. The upper end of the end face feedback mechanism is elastically connected to the first mounting plate. The second mounting plate is fixed to the middle of the end face feedback mechanism. The third mounting plate is fixed to the lower part of the end face feedback mechanism. The claw height feedback mechanism is elastically connected to the third mounting plate. The lower end face of the claw height feedback mechanism is lower than the lower end face of the end face feedback mechanism. The claw height feedback mechanism is arranged around the end face feedback mechanism and corresponds vertically one by one to the bent claws on the product. The eddy current digital displacement sensor is signal-connected to the claw height feedback mechanism one by one.

[0006] Further, the end face feedback mechanism includes a first compression spring, a transmission rod, and a pressing head. The transmission rod is vertically arranged, and its upper end is connected to the first mounting plate through the first compression spring. The pressing head is fixed to the lower end of the transmission rod. The second mounting plate is fixed to the middle of the transmission rod, and the third mounting plate is fixed to the lower part of the transmission rod.

[0007] Further, the claw height feedback mechanism includes a detection head, a guide shaft, a linear bearing, a second compression spring, and a contact head. The guide shaft vertically penetrates the third mounting plate. The linear bearing is embedded in the third mounting plate between the guide shaft and the third mounting plate. The detection head is fixed to the upper end of the guide shaft above the third mounting plate. The contact head is fixed to the lower end of the guide shaft below the third mounting plate. The second compression spring is sleeved on the lower part of the guide shaft. The lower end of the second compression spring is fixed to the contact head, and the upper end is fixed to the third mounting plate. The contact head is vertically corresponding to the bending claws on the product. The eddy current digital displacement sensor is vertically corresponding and signal-connected to the detection head above it.

[0008] Preferably, the second mounting plate is provided with a counterbore at the position where the eddy current digital displacement sensor penetrates upward from its lower surface. The diameter of the counterbore is larger than the diameter of the detection head. The lower end of the eddy current digital displacement sensor is recessed into the counterbore, which can protect it. When the detection head moves vertically upward along the guide shaft, it can enter the counterbore to approach the eddy current digital displacement sensor to transmit signals.

[0009] Preferably, the detection head presses against the end face of the product with an interference fit.

[0010] Further, the sliding table mechanism is a sliding table type electric cylinder.

[0011] Further, at least two guide columns are arranged between the first mounting plate and the second mounting plate. The upper ends of the guide columns are fixed to the first mounting plate, and the lower ends are connected to the second mounting plate through penetration.

[0012] Beneficial effects: Compared with the prior art, the advantages of the present invention are as follows: The detection device can synchronously detect the claw height of products with multiple bending claws through the cooperation of the claw height feedback mechanism and the end face feedback mechanism. Through the detected displacement changes, they are equally transmitted to the eddy current digital displacement sensor, thus ensuring the stability and accuracy of the transmitted displacement change amount. The claw height feedback mechanism and the end face feedback mechanism can adaptively set the contact positions and contact ranges of the detection head and the pressing head according to the size of the product, thereby shrinking the space required for direct detection by multiple eddy current digital displacement sensors inward. In particular, it can be quickly and effectively applied to small detection products. This detection device can be installed on the production line of product processing. It is convenient to use, has stable detection, high detection accuracy, can quickly read detection data and quickly compare data, and has a short single detection cycle time and high efficiency. Description of the Drawings

[0013] Figure 1Schematic diagram of the structure of a product with bent claws before the side claws are bent;

[0014] Figure 2 Schematic diagram of the structure of a product with bent claws after the side claws are bent;

[0015] Figure 3 Schematic three - dimensional structure diagram of the present invention;

[0016] Figure 4 is Figure 3 Schematic diagram of the structure of the detection part in

[0017] Figure 5 is Figure 4 bottom view of

[0018] Figure 6 is Figure 4 A - A cross - sectional view of

[0019] Figure 7 is Figure 6 State diagram when detecting the high - pressure clamping of the bent claws of the product. Specific embodiments

[0020] The present invention will be further clarified below in conjunction with the accompanying drawings and specific embodiments. These embodiments are only used to illustrate the present invention and not to limit the scope of the present invention.

[0021] A claw height synchronous detection device for a product with multiple bent claws, as shown in the attached Figures 3 to 6 figure, includes a sliding table mechanism 1, a first mounting plate 2, a second mounting plate 3, a third mounting plate 4, an end - face feedback mechanism 5, an eddy current digital displacement sensor 6, and a claw height feedback mechanism 7.

[0022] The sliding table mechanism 1 is installed on the working platform 8 and uses a sliding - type electric cylinder, which brings vertical linear reciprocating motion.

[0023] The first mounting plate 2 is arranged horizontally and fixed to the sliding table mechanism 1, and moves vertically in a linear reciprocating manner with it.

[0024] The end face feedback mechanism 5 is vertically connected to the first mounting plate 2. The end face feedback mechanism 5 includes a first compression spring 51, a transmission rod 52, a pressure head 53, and a flanged linear bearing 54. The transmission rod 52 is vertically arranged. The first compression spring 51 is sleeved on the upper end of the transmission rod 52. The lower end of the first compression spring 51 is fixed to the transmission rod 52. A collar 55 can be arranged on the upper part of the transmission rod 52. The lower end of the first compression spring 51 lands on and is fixed to the collar 55. The collar 55 provides a lower limit support and fixation for the first compression spring 51. The upper end of the first compression spring 51 is fixed to the first mounting plate 2. A counterbore 22 can be opened on the lower surface of the first mounting plate 2. The upper end of the first compression spring 51 is inserted into and fixed in the counterbore 22. The flanged linear bearing 54 is sleeved on the first compression spring 51 and fixed to the lower surface of the first mounting plate 2, assisting the vertical elastic movement of the first compression spring 51. Then, the transmission rod 52 forms an elastic connection with the first mounting plate 2 through the first compression spring 51. The pressure head 53 is fixed to the lower end of the transmission rod 52.

[0025] The second mounting plate 3 is horizontally arranged below the first mounting plate 2 and fixed to the middle part of the transmission rod 52. It can be fixed to the collar 55 on the transmission rod 52. The second mounting plate 3. At least two guide posts 21 are arranged between the first mounting plate 2 and the second mounting plate 3. The upper ends of the guide posts 21 are fixed to the first mounting 2, and the lower ends are connected to the second mounting plate 3 through bearings. Then, the second mounting plate 3 can play a role in supporting the whole end face feedback mechanism 5 and does not interfere with the vertical elastic movement of the end face feedback mechanism 5 with the first compression spring 51.

[0026] The eddy current digital displacement sensor 6 is vertically inserted and fixed on the second mounting plate 3.

[0027] The third mounting plate 4 is horizontally arranged below the second mounting plate 3 and fixed to the lower part of the transmission rod 52.

[0028] The claw height feedback mechanism 7 is vertically penetrated and connected to the third mounting plate 4. The claw height feedback mechanism 7 includes a detection head 71, a guide shaft 72, a linear bearing 73, a second compression spring 74, and a contact head 75. The guide shaft 72 is vertically penetrated through the third mounting plate 4, and the linear bearing 73 is embedded in the third mounting plate 4 between the guide shaft 72 and the third mounting plate 4 to ensure that the guide shaft 72 can move vertically smoothly. The detection head 71 is fixed to the upper end of the guide shaft 72 above the third mounting plate 4, and the contact head 75 is fixed to the lower end of the guide shaft 72 below the third mounting plate 4. The second compression spring 74 is sleeved on the lower part of the guide shaft 72. The lower end of the second compression spring 74 is fixed to the contact head 75, and the upper end is fixed to the third mounting plate 4. A counterbore 41 can be opened on the lower surface of the third mounting plate 4, and the upper end of the second compression spring 74 is inserted into and fixed in the counterbore 41. When the guide shaft 72 moves vertically, the detection head 71 moves vertically above the third mounting plate 4 along with the guide shaft 72, and the contact head 75 moves vertically below the third mounting plate 4 along with the guide shaft 72. Then, the guide shaft 72 forms an elastic connection with the third mounting plate 4 through the second compression spring 74.

[0029] In the non-detection state, the lower end face of the contact head 75 of the claw height feedback mechanism 7 is lower than the lower end face of the indenter 53 of the end face feedback mechanism 5.

[0030] According to the need for multi-bending claw detection, for example, if the product 9 usually needs to detect the claw height of 8 bending claws, the same number of claw height feedback mechanisms 7 and eddy current digital displacement sensors 6 as the number of bending claws are set. Each claw height feedback mechanism 7 surrounds the end face feedback mechanism 5. Each claw height feedback mechanism 7 is arranged vertically corresponding to the bending claws on the product 9 one by one. The contact head 75 is in direct contact with the bending claws. The eddy current digital displacement sensor 6 is signal-connected to the claw height feedback mechanism 7 one by one. The detection head 71 is directly vertically corresponding and signal-connected to the eddy current digital displacement sensor 6 located above it.

[0031] To protect the eddy current digital displacement sensor 6, the second mounting plate 3 is provided with a counterbore 31 from its lower surface upward at the penetration position of the eddy current digital displacement sensor 6. The diameter of the counterbore 31 is larger than the diameter of the detection head 71. The lower end of the eddy current digital displacement sensor 6 is recessed into the counterbore 31. When the detection head 71 moves vertically upward along with the guide shaft 72, it can enter the counterbore 31 to approach the eddy current digital displacement sensor 6 to transmit signals.

[0032] The detection device of the present invention can be assembled on the production line of product processing. The conveying mechanism 10 drives the product 9 to move to the detection station, and the detection starts. Figure 7As shown in the figure, the linear descent of the sliding table mechanism 1 drives the overall synchronous descent of the first mounting plate 2 and the end face feedback mechanism 5, the second mounting plate 3 and the eddy current digital displacement sensor 6, and the third mounting plate 4 and the claw height feedback mechanism 7. Then, the contact head 75 first touches the bending claw and is blocked and remains stationary. As the sliding table mechanism 1 continues to descend, the second compression spring 74 is compressed. Since the contact head 75 is fixed to the guide shaft 72, the guide shaft 72 supports the detection head 71 to move upward, generating a displacement change. As the sliding table mechanism 1 continues to descend, when the pressing head 53 touches the upper end face of the product 9, the part below the first mounting plate 2 moves upward synchronously with the transmission rod 52 as a whole, and the first compression spring 51 is compressed. When the pressing head 53 is in interference contact with the upper end face of the product 9, the sliding table mechanism 1 stops descending. Since the detection head 71 approaches the eddy current digital displacement sensor 6, the eddy current digital displacement sensor 6 generates displacement change data. Read the data of each eddy current digital displacement sensor 6 when the sliding table mechanism 1 stops. Collect and calculate the data through the PLC. When the data of each bending claw obtained is within the claw height tolerance range required by the product 9 drawing, it is judged that the height of each bending claw of this product meets the requirements. If the height of one bending claw is not within the range, it is judged that the claw height bending of the product is defective. Finally, the sliding table mechanism 1 quickly rises back to the initial position, and the first compression spring 51 and the second compression spring 74 reset to restore the end face feedback mechanism 5 and the claw height feedback mechanism 7 to the state before detection, completing a detection cycle.

[0033] When the detection head and the pressing head touch the bending claw and the end face of the product, the second compression spring and the first compression spring can buffer the impact during contact, prevent the jitter during contact from affecting the detection accuracy, and when the sliding table mechanism resets, it is used to reset the detection head and the pressing head downward.

[0034] The detection device of the present invention can synchronously detect the claw height of a product with multiple bending claws through the cooperation of the claw height feedback mechanism and the end face feedback mechanism. Through the detected displacement change, it is equally transmitted to the eddy current digital displacement sensor, thus ensuring the stability and accuracy of the transmitted displacement change amount; since the claw height feedback mechanism and the end face feedback mechanism are in direct contact with the product and are connected to the eddy current digital displacement sensor by signal feedback, the claw height feedback mechanism and the end face feedback mechanism can adaptively set the contact position and contact range of the detection head and the pressing head according to the size of the product, thereby shrinking the space required for direct detection by multiple eddy current digital displacement sensors inward. In particular, it can be quickly and effectively applied to small detection products; this detection device can be installed on the production line of product processing, is convenient to use, has stable detection, high detection accuracy, can quickly read detection data and quickly perform data comparison, and has a short single detection cycle time and high efficiency.

Claims

1. A claw height synchronous detection device for a product with multi-bent claws, Characterized in that: It includes a slide table mechanism (1) that moves vertically in a straight line, an end face feedback mechanism (5) vertically connected to a first mounting plate (2), an eddy current digital displacement sensor (6) vertically inserted and fixed on a second mounting plate (3), and a claw height feedback mechanism (7) vertically inserted and connected to a third mounting plate (4). The first mounting plate (2), the second mounting plate (3), and the third mounting plate (4) are arranged in sequence from top to bottom. The first mounting plate (2) is fixed to the slide table mechanism (1) and moves vertically in a straight line synchronously with it. The upper end of the end face feedback mechanism (5) is elastically connected to the first mounting plate (2). The second mounting plate (3) is fixed to the middle of the end face feedback mechanism (5), and the third mounting plate (4) is fixed to the lower part of the end face feedback mechanism (5). The claw height feedback mechanism (7) is elastically connected to the third mounting plate (4). The lower end face of the claw height feedback mechanism (7) is lower than the lower end face of the end face feedback mechanism (5). The claw height feedback mechanism (7) is arranged in a one-to-one vertical correspondence with the bent claws on the end face feedback mechanism (5) and the product. The eddy current digital displacement sensor (6) is signal-connected to the claw height feedback mechanism (7) in a one-to-one correspondence; the end face feedback mechanism (5) includes a first compression spring (51), a transmission rod (52), and a pressure head (53). The transmission rod (52) is arranged vertically. Its upper end is connected to the first mounting plate (2) through the first compression spring (51). The pressure head (53) is fixed to the lower end of the transmission rod (52). The second mounting plate (3) is fixed to the middle of the transmission rod (52), and the third mounting plate (4) is fixed to the lower part of the transmission rod (52); the claw height feedback mechanism (7) includes a detection head (71), a guide shaft (72), a linear bearing (73), a second compression spring (74), and a contact head (75). The guide shaft (72) is vertically inserted through the third mounting plate (4). The linear bearing (73) is embedded in the third mounting plate (4) between the guide shaft (72) and the third mounting plate (4). The detection head (71) is fixed to the upper end of the guide shaft (72) above the third mounting plate (4). The contact head (75) is fixed to the lower end of the guide shaft (72) below the third mounting plate (4). The second compression spring (74) is sleeved on the lower part of the guide shaft (72). The lower end of the second compression spring (74) is fixed to the contact head (75), and the upper end is fixed to the third mounting plate (4). The contact head (75) is vertically corresponding to the bent claws on the product. The eddy current digital displacement sensor (6) is signal-connected to the detection head (71) vertically above it; a sink (31) is provided on the lower surface of the second mounting plate (3) upward at the position where the eddy current digital displacement sensor (6) is inserted. The diameter of the sink (31) is larger than the diameter of the detection head (71).

2. The claw height synchronous detection device for a product with multi-bent claws according to claim 1, Characterized in that: The detection head (71) presses against the end face of the product with an interference fit.

3. The claw height synchronous detection device for a product with multi-bent claws according to claim 1, Characterized in that: The slide table mechanism (1) is a slide type electric cylinder.

4. The claw height synchronous detection device for a product with multi-bent claws according to claim 1, characterized in that: At least two guide columns (21) are provided between the first mounting plate (2) and the second mounting plate (3) for connection. The upper end of the guide column (21) is fixed to the first mounting plate (2), and the lower end is connected to the second mounting plate (3) through penetration.

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