Screw length detection mechanism

Abstract

The utility model relates to the technical field of machining, in particular to a screw length detection mechanism which comprises a feeding belt, a limiting partition plate is arranged on the middle rear section of the feeding belt, a conveying chain is arranged on one side of the end portion of the feeding belt, the conveying chain and the feeding belt are perpendicularly arranged, and a measuring assembly is arranged between the feeding belt and the conveying chain. A mounting vertical plate is arranged at the end of the feeding belt, and a material moving mechanism is arranged on the mounting vertical plate. When the length of a screw is detected, the screw is conveyed to the rear end through the feeding belt, the screw advancing route is concentrated on the same straight line through the limiting partition plate, and when the screw reaches the end, due to the fact that the material moving mechanism and the measuring assembly are arranged, the material moving mechanism transfers the screw on the feeding belt to the placing block for length testing; and meanwhile, the screws tested by the placing block are transferred to the conveying chain, so that the measurement automation degree is high, and the production efficiency is greatly improved.

Description

Technical Field

[0001] The utility model relates to the technical field of mechanical processing, in particular to a screw length detection mechanism. Background Art

[0002] Screws are a common mechanical part. They use the physical and mathematical principles of the circular rotation of the inclined surface of an object and the friction force to gradually tighten objects and parts. Screws need to be tested for length after production to avoid substandard qualified rates of the same batch of products. In the prior art, when testing the length of screws, the screws are generally placed on a measuring plate for testing. The visual inspection method results in low testing efficiency and large data errors, which needs to be improved. Utility Model Content

[0003] The purpose of the utility model is to provide a screw length detection mechanism to solve the problems raised in the above background technology.

[0004] To achieve the above-mentioned purpose, the utility model provides the following technical solutions: a screw length detection mechanism, comprising a feed belt, a limiting partition is arranged on the middle and rear sections of the feed belt, a conveyor chain is arranged on one side of the end of the feed belt, the conveyor chain and the feed belt are arranged vertically, a measuring component is arranged between the feed belt and the conveyor chain, a mounting plate is arranged at the end of the feed belt, and a material moving mechanism is arranged on the mounting plate.

[0005] Preferably, the conveyor chain includes two chains, the ends of the chains are connected with sprockets, the sprockets are driven by a driving motor, a tooth plate is installed on the inner wall of the chain, the tooth plate is used to place screws, and a material receiving box is arranged at the bottom of the end of the conveyor chain.

[0006] Preferably, the measuring assembly includes a measuring plate, a placing block is arranged in the middle of the measuring plate, a fixed plate is arranged at one end of the measuring plate, a second telescopic rod is installed on the fixed plate, the end of the second telescopic rod is connected to a movable plate, a top column is arranged at the end of the movable plate, a length measuring device is also installed on the fixed plate, and the end of the length measuring device is connected to the movable plate.

[0007] Preferably, the material moving mechanism includes a cylinder, which is mounted on a back plate, and the back plate is slidably arranged on a movable track on the surface of the mounting vertical plate. A first telescopic rod is installed on one side of the mounting vertical plate, and one end of the first telescopic rod is connected to the cylinder. The bottom end of the cylinder is connected to a lifting plate, and a group of pneumatic clamps are installed on the bottom surface of the lifting plate.

[0008] Compared with the prior art, the beneficial effects of the utility model are:

[0009] The utility model proposes a screw length detection mechanism. When the screw length is detected, the screw is conveyed to the rear end through a feed belt, and a limit partition concentrates the travel route of the screw on a straight line. When the screw reaches the end, a material shifting mechanism and a measuring component are provided. The material shifting mechanism transfers the screw on the feed belt to a placement block for length testing, and at the same time transfers the screw tested on the placement block to a conveyor chain. The measurement automation degree is high, and the production efficiency is greatly improved. BRIEF DESCRIPTION OF THE DRAWINGS

[0010] Figure 1 It is a schematic diagram of the structure of the device of the utility model.

[0011] Figure 2 For this utility model Figure 1 Enlarged view of point A in the middle.

[0012] In the figure: feed belt 1, limit partition 2, mounting vertical plate 3, movable track 4, cylinder 5, first telescopic rod 6, lifting plate 7, pneumatic clamp 8, measuring plate 9, placement block 901, fixed plate 10, second telescopic rod 11, movable plate 12, top column 13, conveyor chain 14, and material receiving box 15. DETAILED DESCRIPTION

[0013] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0014] See also Figure 1 to Figure 2 The utility model provides a technical solution: a screw length detection mechanism, including a feed belt 1, a limited partition plate 2 is arranged on the middle and rear sections of the feed belt 1, a conveyor chain 14 is arranged on one side of the end of the feed belt 1, the conveyor chain 14 and the feed belt 1 are arranged vertically, the conveyor chain 14 includes two chains, the ends of the chains are connected with sprockets, the sprockets are driven by a driving motor, a tooth plate is installed on the inner wall of the chain, the tooth plate is used to place screws, and a material receiving box 15 is arranged at the bottom of the end of the conveyor chain 14.

[0015] A measuring assembly is provided between the feed belt 1 and the conveyor chain 14, and the measuring assembly includes a measuring plate 9, a placing block 901 is provided in the middle of the measuring plate 9, a fixing plate 10 is provided at one end of the measuring plate 9, a second telescopic rod 11 is installed on the fixing plate 10, a movable plate 12 is connected to the end of the second telescopic rod 11, a top column 13 is provided at the end of the movable plate 12, a length measuring device is also installed on the fixing plate 10, and the end of the length measuring device is connected to the movable plate 12. When the screw is placed on the placing block 901, the extension distance of the second telescopic rod 11 is fixed, and the top column 13 pushes the screw forward until it contacts the other The stopper at one end, the moving distance of the movable plate 12 and the top column 13 is determined according to the length of the screw; the length measuring device is a high-precision electronic ruler displacement sensor, the function of the sensor is to convert the linear mechanical displacement into an electrical signal, in order to achieve this effect, the variable resistor slide is usually fixed at a fixed position of the sensor, and different resistance values ​​are measured by the displacement of the slider on the slide. The sensor slide is connected to a steady-state DC voltage, allowing a small current of microamperes to flow through. The voltage between the slider and the starting end is proportional to the length of the slider movement, thereby measuring the accurate length of the screw, with smaller errors and more convenient measurement.

[0016] A mounting plate 3 is provided at the end of the feed belt 1, and a material moving mechanism is provided on the mounting plate 3. The material moving mechanism includes a cylinder 5, which is mounted on a back plate, and the back plate is slidably arranged on a movable track 4 on the surface of the mounting plate 3. A first telescopic rod 6 is installed on one side of the mounting plate 3, and one end of the first telescopic rod 6 is connected to the cylinder 5, and a lifting plate 7 is connected to the bottom end of the cylinder 5. A group of pneumatic clamps 8 are installed on the bottom surface of the lifting plate 7. The cylinder 5 can extend to push the first telescopic rod 6 downward, so that the pneumatic clamp 8 can grab the screw below, and then the cylinder 5 contracts to lift the screw, and the first telescopic rod 6 is extended to push the cylinder 5 horizontally, and then the cylinder 5 extends to put down the screw, so that the screw can be transferred.

[0017] In actual use, when the length of the screws is detected, the screws are transported to the rear end through the feed belt 1, and the limiting partition 2 concentrates the screw's travel path on a straight line. When the screw reaches the end, due to the provision of a material moving mechanism and a measuring component, the material moving mechanism transfers the screws on the feed belt 1 to the placement block 901 for length testing, and at the same time transfers the screws that have completed the test on the placement block 901 to the conveyor chain 14. The measurement has a high degree of automation, which greatly improves production efficiency.

[0018] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A screw length detection mechanism, comprising a feed belt (1), characterized in that: A limiting partition plate (2) is arranged on the middle and rear section of the feed belt (1), a conveyor chain (14) is arranged on one side of the end of the feed belt (1), the conveyor chain (14) and the feed belt (1) are arranged vertically, a measuring component is arranged between the feed belt (1) and the conveyor chain (14), and a mounting plate (3) is arranged at the end of the feed belt (1), and a material moving mechanism is arranged on the mounting plate (3).

2. A screw length detection mechanism according to claim 1, characterized in that: The conveying chain (14) comprises two chains, the ends of the chains are connected with sprockets, the sprockets are driven by a driving motor, a tooth plate is installed on the inner wall of the chain, the tooth plate is used to place screws, and a material receiving box (15) is arranged at the bottom of the end of the conveying chain (14).

3. A screw length detection mechanism according to claim 1, characterized in that: The measuring assembly comprises a measuring plate (9), a placing block (901) is arranged in the middle of the measuring plate (9), a fixing plate (10) is arranged at one end of the measuring plate (9), a second telescopic rod (11) is installed on the fixing plate (10), the end of the second telescopic rod (11) is connected to a movable plate (12), a top column (13) is arranged at the end of the movable plate (12), and a length measuring device is also installed on the fixing plate (10), and the end of the length measuring device is connected to the movable plate (12).

4. A screw length detection mechanism according to claim 1, characterized in that: The material moving mechanism comprises a cylinder (5), the cylinder (5) is mounted on a back plate, the back plate is slidably arranged on a movable track (4) on the surface of the mounting vertical plate (3), a first telescopic rod (6) is mounted on one side of the mounting vertical plate (3), one end of the first telescopic rod (6) is connected to the cylinder (5), the bottom end of the cylinder (5) is connected to a lifting plate (7), and a group of pneumatic clamps (8) are mounted on the bottom surface of the lifting plate (7).

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