Limiting detection device for columnar workpiece

Abstract

The utility model discloses a limiting detection device for columnar workpieces, which relates to the technical field of workpiece detection and comprises a conveying belt for sequentially conveying the columnar workpieces, and a probe is suspended above the conveying belt; the position, matched with the probe, of the conveying belt is provided with a limiting structure, the limiting structure comprises a fixed stop lever and a movable ejector rod which are oppositely arranged on the two sides of the conveying belt, a plurality of clamping blocks distributed at equal intervals are fixed to the movable ejector rod, and a formed V-shaped clamping groove faces the fixed stop lever. The movable ejector rod translates to enable the V-shaped clamping groove of the clamping block to be matched with the fixed stop lever to clamp the side wall of the columnar workpiece, and the columnar workpiece is positioned below the probe to be detected. Compared with the prior art, the cylindrical workpiece to be detected can be clamped through the limiting structure, the cylindrical workpiece is prevented from being too scattered, and a probe above the cylindrical workpiece can conveniently detect the cylindrical workpiece.

Description

Technical Field

[0001] The utility model relates to a limit detection device, in particular to a limit detection device for a columnar workpiece, belonging to the technical field of workpiece detection. Background Art

[0002] Some cylindrical workpieces such as rods, shafts, and tubes may need to be inspected after being rounded. The existing inspection method is generally to place a certain amount of workpieces on a conveyor belt. When the workpieces are conveyed to the probe position, the probe performs the inspection. After searching, the patent with the publication number "CN219328442U" discloses a workpiece inspection device, which is mainly used to solve the technical problem that the workpieces placed on the conveyor belt may be loose and offset, and need to be corrected at the inspection position.

[0003] Similarly, the applicant has also designed a limit detection device, specifically a limit detection device for a columnar workpiece. Utility Model Content

[0004] In view of the above-mentioned deficiencies in the prior art, the utility model provides a limit detection device for a columnar workpiece.

[0005] To achieve the above-mentioned purpose, the technical solution adopted by the utility model is: a limit detection device for columnar workpieces, including a conveyor belt for conveying columnar workpieces in sequence, and a probe is suspended above the conveyor belt; the conveyor belt has a limit structure at the position matching the probe, and the limit structure includes a fixed baffle and a movable push rod relatively arranged on both sides of the conveyor belt, and a plurality of clamping blocks arranged at equal intervals are fixed on the movable push rod, and the V-shaped clamping groove formed by the clamping block faces the direction of the fixed baffle rod. When the same amount of the columnar workpieces are conveyed to the clamping block position, the movable push rod translates so that the V-shaped clamping groove of the clamping block cooperates with the fixed baffle rod to clamp the side wall of the columnar workpiece, and positions it under the probe for detection.

[0006] Preferably, the probe is mounted on a movable module, and the movable module can at least drive the probe to move horizontally or vertically.

[0007] Preferably, both sides of the conveyor belt are provided with adjustment stands for mounting fixed baffle rods and movable top rods, and the adjustment stands can adjust the relative heights between the fixed baffle rods, the movable top rods and the conveyor belt.

[0008] Preferably, the fixed blocking rod is formed with a bending portion toward the input direction of the conveyor belt for introducing the columnar workpiece.

[0009] Preferably, a push rod cylinder is fixed on the adjustment stand corresponding to the movable push rod, and the movable push rod is pushed and translated by the push rod cylinder.

[0010] Preferably, an adjustment groove is formed on the movable push rod, and a plurality of the clamping blocks are locked and fixed on the adjustment groove.

[0011] Preferably, the fixed baffle rod and the movable push rod are provided with workpiece baffles facing the input direction of the columnar workpiece, and the workpiece baffles can be relatively close to each other to separate the columnar workpieces on the conveyor belt.

[0012] Preferably, the workpiece baffle is connected to baffle cylinders provided on baffle stands on both sides of the conveyor belt, and the baffle cylinders drive the workpiece baffles to move closer or farther away from each other.

[0013] The utility model has at least the following benefits:

[0014] 1. The cylindrical workpiece to be inspected can be clamped and limited by the limiting structure to prevent it from being too scattered on the conveyor belt;

[0015] 2. The limiting structure can clamp columnar workpieces of certain specifications and has high applicability;

[0016] 3. The workpiece baffle can separate the remaining undetected cylindrical workpieces to avoid interference;

[0017] 4. It can be matched with specific machinery to directly realize the loading and unloading functions of columnar workpieces. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 It is a structural schematic diagram of the utility model.

[0019] Figure 2 It is a schematic diagram of the positioning of the hollow rod.

[0020] Figure 3 It is a schematic diagram of the structure of the clamping block.

[0021] In the figure, 1-conveyor belt; 2-columnar workpiece; 3-probe; 301-movable module; 4-limiting structure; 401-adjusting stand; 402-fixed baffle; 412-bending part; 403-movable ejector; 413-clamping block; 423-ejector cylinder; 404-workpiece baffle; 414-baffle cylinder; 424-baffle stand; 434-sensor. DETAILED DESCRIPTION

[0022] 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.

[0023] like Figure 1-Figure 3As shown: a limit detection device for columnar workpieces, including a conveyor belt 1, wherein the conveyor belt 1 is used to convey a plurality of columnar workpieces 2 (hereinafter referred to as hollow rods) placed in sequence to the end, and a probe 3 is arranged above the middle section of the conveyor belt 1 through a movable module 301, and the probe 3 can detect at least one hollow rod conveyed thereto.

[0024] Furthermore, the conveyor belt 1 is provided with a limiting structure 4 for clamping the hollow rod at the position matching the probe 3 so that the hollow rod is positioned below the probe 3. The limiting structure 4 includes a fixed stopper 402 and a movable push rod 403 which are relatively arranged on both sides of the conveyor belt 1 through an adjustment stand 401. A plurality of clamping blocks 413 forming V-shaped clamping grooves are locked and fixed at equal intervals on the movable push rod 403. When the movable push rod 403 is pushed by a push rod cylinder 423 provided on the adjustment stand 401, it can move toward the direction of the fixed stopper 402 together with the clamping block 413. The V-shaped clamping groove of the clamping block 413 cooperates with the fixed stopper 402 to clamp the hollow rod to be detected and limit the position.

[0025] Specifically, a strip-shaped adjustment groove is formed on the above-mentioned movable top rod 403, and each clamping block 413 is fixed at the adjustment groove by bolts. The adjustment groove can be used to adjust the spacing between adjacent clamping blocks 413 to match hollow rods of different diameters; similarly, the above-mentioned adjustment stand 401 can also adopt a strip-shaped adjustment groove design, so that the fixed blocking rod 402 and the movable top rod 403 can be adjusted up and down relative to the conveyor belt 1 to match hollow rods of different lengths.

[0026] Specifically, since the hollow rods are artificially placed on the conveyor belt 1, the hollow rods are not necessarily arranged evenly. Some hollow rods may be blocked by the ends of the fixed lever 402 when they are conveyed to the position. Therefore, in the present design, the fixed lever 402 is provided with an outwardly expanding bent portion 412 at one end facing the input of the conveyor belt 1, and the bent portion 412 can be used to cooperate with the guidance of the hollow rods.

[0027] Furthermore, the fixed baffle rod 402 and the movable top rod 403 are respectively installed with a workpiece baffle 404 at one end facing the input of the conveyor belt 1 through the baffle cylinder 414 provided on the baffle stand 424, and a sensor 434 is fixed on the baffle stand 424 at a position corresponding to the workpiece baffle 404. When the sensor 434 senses that the number of hollow rods equal to the clamping block 413 has passed, the baffle cylinder 414 can be used to drive the two workpiece baffles 404 to move closer together to temporarily separate the subsequent hollow rods. After the detection of this part of the hollow rods is completed, the workpiece baffle 404 is separated again to allow the subsequent hollow rods to enter; of course, since the function of the workpiece baffle 404 is to intercept the hollow rods, the workpiece baffle 404 is preferably set at a height position close to the conveyor belt 1, so as to ensure that a certain length of hollow rods can be intercepted.

[0028] Working method: After a certain amount of hollow rods on the conveyor belt pass through the sensor, the sensor sends a signal to the baffle cylinder, so that the workpiece baffle blocks the subsequent hollow rods, while the hollow rods that pass the sensor continue to move forward. During this period, the movable push rod moves toward the fixed gear rod, and the clamp block and the fixed gear rod cooperate to temporarily clamp and position this part of the hollow rod. The probe above moves the mobile module horizontally to detect each hollow rod in turn. After the detection is completed, the movable push rod is reset, and this part of the hollow rod continues to move forward, and the subsequent hollow rods repeat the above detection process.

[0029] As described in the background technology above, when batches of hollow rods are placed on a conveyor belt for transportation, loose offset problems are prone to occur, and the probe above the conveyor belt may not be able to accurately detect them. Although the workpiece detection device disclosed in the prior art can realize secondary correction during the transportation of the workpiece, it is not completely suitable for columnar workpieces such as hollow rods. Specifically, this is because the clamping capacity of the strip clamp is relatively limited and it may not be possible to clamp and move it upward. The present design uses a plurality of clamping blocks with V-shaped clamping grooves to limit such workpieces, and can clamp them directly on the conveyor belt, thereby avoiding the above-mentioned offset problem, and the number of hollow rods detected each time is quantitative, which can facilitate personnel to conduct subsequent quantity statistics.

[0030] The terms used in this utility model are only for the purpose of describing specific embodiments and are not intended to limit this application. Unless otherwise defined, the technical terms or scientific terms used in this utility model should be understood by people with ordinary skills in the field. Unless otherwise specified, the words "upper", "lower", "front", "back" and the like are only for the convenience of description and are not limited to a position or a spatial orientation.

Claims

1. A position detection device for a columnar workpiece, comprising a conveyor belt (1) for sequentially conveying columnar workpieces (2), a probe (3) suspended above the conveyor belt (1), characterized in that: The position of the conveyor belt (1) matching the probe (3) has a limiting structure (4), and the limiting structure (4) includes a fixed stop rod (402) and a movable push rod (403) arranged relatively on both sides of the conveyor belt (1), and a plurality of clamping blocks (413) arranged at equal intervals are fixed on the movable push rod (403), and the V-shaped clamping groove formed by the clamping blocks is oriented in the direction of the fixed stop rod (402). When the same amount of the columnar workpieces (2) are conveyed to the position of the clamping blocks (413), the movable push rod (403) translates so that the V-shaped clamping groove of the clamping blocks (413) cooperates with the fixed stop rod (402) to clamp the side wall of the columnar workpiece (2), so as to position it below the probe (3) for detection.

2. A position limit detection device for a columnar workpiece according to claim 1, characterized in that: The probe (3) is mounted on a movable module (301), and the movable module (301) can at least drive the probe (3) to move horizontally or to rise and fall.

3. A position limit detection device for a columnar workpiece according to claim 1, characterized in that: Both sides of the conveyor belt (1) are provided with adjustment stands (401) for mounting fixed baffles (402) and movable top rods (403); the adjustment stands (401) can adjust the relative heights between the fixed baffles (402), the movable top rods (403) and the conveyor belt (1).

4. A position limit detection device for a columnar workpiece according to claim 1, characterized in that: The fixed blocking rod (402) is formed with a bending portion (412) facing the input direction of the conveyor belt (1) for introducing the columnar workpiece (2).

5. A position limit detection device for a columnar workpiece as claimed in claim 3, characterized in that: A push rod cylinder (423) is fixed on the adjustment stand (401) corresponding to the movable push rod (403), and the movable push rod (403) is pushed to move in translation by the push rod cylinder (423).

6. A position limit detection device for a columnar workpiece according to claim 1, characterized in that: An adjustment groove is formed on the movable push rod (403), and a plurality of clamping blocks (413) are locked and fixed on the adjustment groove.

7. A position limit detection device for a columnar workpiece according to any one of claims 1 to 6, characterized in that: The fixed baffle rod (402) and the movable push rod (403) are provided with workpiece baffle plates (404) facing the input direction of the columnar workpiece (2), and the workpiece baffle plates (404) can be relatively close to each other to separate the columnar workpiece (2) on the conveyor belt (1).

8. A position limit detection device for a columnar workpiece according to claim 7, characterized in that: The workpiece baffle (404) is connected to baffle cylinders (414) provided on baffle stands (424) at both sides of the conveyor belt (1), and the baffle cylinders (414) drive the workpiece baffle (404) to move closer or farther away from each other.

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