Nut detection device

Abstract

The utility model aims to provide a nut detection device, which comprises a base and at least one detection assembly, the detection assembly comprises a support column, a transverse sheet and at least one metal inductor, the support column is adjustably arranged on the base, one end of the transverse sheet is adjustably arranged at the top of the support column, so that the other end of the transverse sheet extends outwards along the radial direction of the support column, and the metal inductor is arranged on the support column. The metal sensors are adjustably arranged on the transverse piece, and the detection ends of the metal sensors are arranged upwards in the vertical direction. Therefore, according to the nut layout position of the plastic workpiece to be detected, each detection assembly is fixed on the base, and then after the plastic workpiece is taken out from a mold of an injection molding machine by a matched material taking manipulator on the injection molding machine, the plastic workpiece is transferred and suspended above the base; therefore, the metal sensors can detect the nuts of the plastic workpieces respectively, automatic detection is achieved, manual visual detection is replaced, the detection efficiency is effectively improved, and the false detection rate is reduced.

Description

TECHNICAL FIELD

[0001] The utility model relates to the technical field of tooling fixture, in particular to a nut detection device. BACKGROUND

[0002] With the rapid development of insert injection molding process, the application of integrated forming of pre-placed metal nut in plastic products is becoming more and more widespread. Such process by pre-positioning the nut in the mold cavity, in the injection molding process, the molten plastic and nut form a close combination, so as to obtain the composite workpiece with internal thread structure. However, due to mold vibration, positioning deviation or foreign matter interference and other factors, there are quality problems such as nut falling off, deviation or missing in injection molding process, resulting in plastic workpiece with nut missing problem.

[0003] At present, the artificial visual inspection method is generally used for nut integrity detection in the industry. The operator needs to visually check the demolded plastic workpiece one by one. Whether there is nut missing or position deviation is judged by naked eye. But this traditional detection method has obvious defects: first, long time and high frequency visual inspection of workers is easy to cause visual fatigue, especially in the complex workpiece with multiple nut layout, the missed detection rate is higher; second, the artificial detection speed is difficult to match the speed of automatic production line, and the single piece detection time is 10-15 seconds, which seriously restricts the overall production efficiency; third, for micro nut (such as M2 or below) or deep cavity structure workpiece, visual inspection has visual angle blind area, which is easy to cause misjudgment.

[0004] In view of the above technical problems, the nut detection device linked with the injection mold taking manipulator of the present application is proposed. By integrating the inherent equipment resources of injection molding process, the automatic positioning and nut detection of injection workpiece are realized by using the motion trajectory characteristics of taking manipulator without additional mechanical arm, which significantly improves the nut detection accuracy and efficiency, and effectively solves the problems of low efficiency and high misjudgment rate of traditional detection method. UTILITY MODEL CONTENTS

[0005] The utility model aims at overcoming the deficiencies in the prior art, providing a nut detection device which can automatically detect the nut of plastic workpiece, improve the detection efficiency and reduce the misjudgment rate.

[0006] The utility model aims at overcoming the deficiencies in the prior art, providing a nut detection device which can automatically detect the nut of plastic workpiece, improve the detection efficiency and reduce the misjudgment rate.

[0007] A nut detection device comprises:

[0008] Base; and

[0009] At least one detection assembly, the detection assembly comprises a support, a crosspiece and at least one metal sensor, the support is adjustably arranged on the base, one end of the crosspiece is adjustably arranged on the top of the support, so that the other end of the crosspiece extends outward along the radial direction of the support, each metal sensor is adjustably arranged on the crosspiece, and the detection end of each metal sensor is arranged upward along the vertical direction.

[0010] Optionally, the detection assembly further comprises two screws, one of the screws is arranged through the base to be screwed to the bottom end of the support, so that the support is adjustably fixed on the base, and the other screw is arranged through the crosspiece to be screwed to the top end of the support, so that the crosspiece is adjustably fixed on the support.

[0011] Optionally, a plurality of first adjusting holes are arranged on the base in a spaced manner, and the screw screwed to the bottom end of the support is arranged through one of the first adjusting holes.

[0012] Optionally, a through hole is arranged on one end of the crosspiece, and the screw screwed to the top end of the support is arranged through the through hole.

[0013] Optionally, a second adjusting hole is further arranged on the crosspiece, and the metal sensor is arranged through the second adjusting hole.

[0014] Optionally, two locking nuts are screwed on each metal sensor, and the two locking nuts are arranged on the two side surfaces of the crosspiece respectively, and the two locking nuts are used for clamping one metal sensor together.

[0015] Optionally, two clamping surfaces are arranged on the outer side wall of the support, and the two clamping surfaces are centrally symmetrically arranged with respect to the axis of the support.

[0016] Optionally, a protrusion is arranged on each end of the bottom surface of the base.

[0017] Optionally, a plurality of fixing holes are further arranged on the base, and each fixing hole penetrates the base and the protrusion.

[0018] Compared with the prior art, the utility model has at least the following advantages:

[0019] The nut detection device of the utility model, including base and at least one detection assembly, detection assembly includes support, cross piece and at least one metal inductor, support is adjustably arranged on the base, one end of cross piece is adjustably arranged on the top of support, to make the other end of cross piece extend outward along the radial direction of support, each metal inductor is adjustably arranged on cross piece, and the detection end of each metal inductor is arranged upwards along the vertical direction. In this way, according to the nut layout position of the plastic workpiece to be detected, each detection assembly is fixed on the base, then the plastic workpiece is taken out from the injection molding machine mold by the material taking manipulator matched with the injection molding machine, the plastic workpiece is transferred and hovers above the base, so that each metal inductor can detect the nut of the plastic workpiece, automatic detection is realized, manual inspection is replaced, detection efficiency is effectively improved, and the misjudgment rate is reduced. BRIEF DESCRIPTION OF DRAWINGS

[0020] In order to more clearly illustrate the technical scheme of the embodiments of the utility model, the following will briefly introduce the drawings needed to be used in the embodiments, and it should be understood that the following drawings only show some embodiments of the utility model, and should not be regarded as limiting the scope, and for those skilled in the art, other related drawings can also be obtained according to these drawings without creative labor.

[0021] Figure 1 It is the structure schematic view of the nut detection device of an embodiment of the utility model;

[0022] Figure 2 It is the cross-sectional structure schematic view of the detection assembly of an embodiment of the utility model.

[0023] Explanation of reference signs:

[0024] 10, nut detection device;110, base;200, detection assembly;210, support;220, cross piece;230, metal inductor;240, screw;111, first adjusting hole;221, via hole;222, second adjusting hole;250, locking nut;211, clamping surface;120, protruding block;112, fixed hole. DETAILED DESCRIPTION

[0025] In order to facilitate understanding of the utility model, the following will be more comprehensive description of the utility model with reference to the related drawings. The preferred embodiments of the utility model are shown in the drawings.

[0026] As Figures 1 to 2As shown, a nut detection device 10 comprises a base 110 and at least one detection assembly 200, the detection assembly 200 is adjustably installed on the base 110, the detection assembly 200 comprises a support column 210, a crosspiece 220 and at least one metal sensor 230, the support column 210 is adjustably arranged on the base 110, one end of the crosspiece 220 is adjustably arranged on the top of the support column 210, so that the other end of the crosspiece 220 extends outward along the radial direction of the support column 210, and each metal sensor 230 is adjustably arranged on the crosspiece 220, and the detection end of each metal sensor 230 is arranged upward along the vertical direction.

[0027] It should be noted that the installation position of the detection assembly 200 on the base 110 is adjustable. Specifically, the position of the support column 210 relative to the base 110 is adjustable, one end of the crosspiece 220 is fixed on the support column 210, and the other end extends outward along the radial direction of the support column 210, and the crosspiece 220 can be adjusted to rotate relative to the support column 210 to any direction of the horizontal plane. The metal sensor 230 is adjustably arranged on the crosspiece 220, and the number of metal sensors 230 can be set to any number according to actual needs, so that the nut detection of plastic workpieces of different specifications can be met. It should be noted that the metal sensor 230 is used to be electrically connected with the PLC control system, and since the control process is not the protection content of the present application, the control system will not be described. Further, the metal sensor 230 is a mature technology, and the internal structure of the metal sensor 230 is not the protection content of the present application, so the internal structure of the metal sensor 230 will not be described. The working principle is as follows: the base 110 of the present application is fixedly installed adjacent to the injection molding machine, the position of the detection assembly 200 relative to the base 110 is adjusted according to the position of the nut in the actual injection molding workpiece, specifically, the position of the support column 210 relative to the base 110 can be adjusted, the crosspiece 220 relative to the support column 210 can be adjusted, the metal sensor 230 relative to the crosspiece 220 can be adjusted, and the height of the metal sensor 230 relative to the crosspiece 220 can also be adjusted. In this way, each metal sensor 230 can correspond to the position of each nut of the plastic workpiece to be detected, ensuring that each nut of the plastic workpiece to be detected corresponds to a metal sensor 230. In this way, the material taking manipulator matched with the injection molding machine takes out the plastic workpiece from the injection molding machine mold, moves and hovers above the base 110, so that each metal sensor 230 can detect the nut of the plastic workpiece respectively, realizes automatic detection, replaces manual inspection, effectively improves the detection efficiency, and reduces the false detection rate.

[0028] As Figure 1 and Figure 2As shown, in an embodiment, the detection assembly 200 further comprises two screws 240, one of which is threaded through the base 110 to screw onto the bottom end of the support column 210, so that the support column 210 is adjustably fixed on the base 110, and the other is threaded through the crosspiece 220 to screw onto the top end of the support column 210, so that the crosspiece 220 is adjustably fixed on the support column 210.

[0029] It should be noted that one of the screws 240 is threaded through the base 110 from the bottom of the base 110 and screwed and fixed with the support column 210, so that the support column 210 can be fixed on the base 110. By loosening the screw 240 screwed on the bottom of the support column 210, the position of the support column 210 relative to the base 110 can be adjusted. When the screw 240 screwed on the top of the support column 210 is loosened, one end of the crosspiece 220 can be rotated relative to the support column 210, so that the position of the crosspiece 220 relative to the support column 210 is adjustable. In this way, the support column 210, the crosspiece 220, and the base 110 are fixed by the screws 240, which can be used for detecting whether the nuts of plastic workpieces of different specifications are missing, and the position of the metal inductor 230 can be quickly adjusted by screwing the screws 240.

[0030] As shown in Figure 1 , in an embodiment, a plurality of first adjustment holes 111 are formed on the base 110, and the screw 240 screwed on the bottom end of the support column 210 is threaded through one of the first adjustment holes 111.

[0031] In this way, the support column 210 can be fixed in a specific first adjustment hole 111 according to the layout position of the nuts of the plastic workpiece, which is convenient to operate. In an embodiment, the first adjustment hole 111 is a waist-shaped hole structure, and each pair of waist-shaped holes are equidistantly distributed on the base 110.

[0032] As shown in Figure 2 , in an embodiment, a through hole 221 is formed on one end of the crosspiece 220, and the screw 240 screwed on the top end of the support column 210 is threaded through the through hole 221. In this way, the crosspiece 220 can be reliably fixed on the support column 210 by the screw 240.

[0033] As shown in Figure 1 and Figure 2 , in an embodiment, a second adjustment hole 222 is formed on the crosspiece 220, and the metal inductor 230 is threaded through the second adjustment hole 222.

[0034] In this way, the metal inductor 230 can be quickly installed and fixed on the crosspiece 220. In an embodiment, the second adjustment hole 222 is also a waist-shaped hole structure, which can be used to adjust the position of the metal inductor 230 on the crosspiece 220, and also can be used to install multiple metal inductors 230 on the crosspiece 220.

[0035] As shown in Figure 1 and Figure 2 , in an embodiment, two locking nuts 250 are screwed on each metal inductor 230, and the two locking nuts 250 are respectively located on the two side surfaces of the cross piece 220, and the two locking nuts 250 are used to clamp a metal inductor 230 together.

[0036] In this way, the metal inductor 230 is fixed on the cross piece 220 by the two locking nuts 250 together, and the height position of the metal inductor 230 relative to the cross piece 220 is adjustable, so that it can be applied to detect the nut missing condition of plastic workpieces of different layout specifications.

[0037] As shown in Figure 1 , in an embodiment, two clamping surfaces 211 are formed on the outer side wall of the support column 210, and the two clamping surfaces 211 are centrally symmetrically distributed relative to the axis of the support column 210.

[0038] It should be noted that the support column 210 is radially provided with two parallel clamping surfaces 211, which facilitates the clamping and fixing of the support column 210 by tools such as wrenches, so that the support column 210 is convenient to be fixed on the base 110 by the screw 240, or the cross piece 220 is convenient to be fixed on the support column 210 by the screw.

[0039] As shown in Figure 1 and Figure 2 , in an embodiment, the base 110 is provided with a protrusion 120 at each end of the bottom surface.

[0040] It should be noted that the two protrusions 120 support the base 110 together, so that the lower surface of the base 110 is in a suspended structure. When the base 110 is fixed on a flat surface such as a machine table, the screw 240 screwed on the bottom end of the support column 210 is avoided, and further, it is also convenient for tools such as wrenches to extend into the lower part of the base 110 to rotate the screw 240.

[0041] As shown in Figure 1 , in an embodiment, a plurality of fixing holes 112 are formed in the base 110, and each fixing hole 112 penetrates the base 110 and the protrusion 120.

[0042] In this way, it is convenient for the bolt to pass through the fixing hole 112 and then be screwed and fixed with the support structure such as a machine table, so that the nut detection device 10 is convenient to be installed at any position for use.

[0043] The above-described embodiments only express several implementation manners of the utility model, the description is more specific and detailed, but can not therefore be understood as the limitation of the utility model patent range. Among them, the installation / fixed / setting in the utility model is understood as including but not limited to the locking and fixing by using screw / screw, welding unless otherwise defined. It should be pointed out that for ordinary skilled person in the art, without departing from the concept of the utility model, several modifications and improvements can be made, which belong to the protection range of the utility model. Therefore, the protection range of the utility model patent should be subject to the appended claims.

Claims

1. A nut detection device, characterized in that, include: Base; and At least one detection component, the detection component including a support column, a crossbar and at least one metal sensor, the support column being adjustablely disposed on the base, one end of the crossbar being adjustablely disposed on the top of the support column such that the other end of the crossbar extends outward along the radial direction of the support column, each of the metal sensors being adjustablely disposed on the crossbar, and the detection end of each of the metal sensors being disposed upward along the vertical direction.

2. The nut detection device according to claim 1, characterized in that, The detection assembly also includes two screws, one of which passes through the base to be screwed to the bottom end of the support column, so that the support column is adjustablely fixed to the base, and the other screw passes through the cross plate to be screwed to the top end of the support column, so that the cross plate is adjustablely fixed to the support column.

3. The nut detection device according to claim 2, characterized in that, The base has several spaced-apart first adjustment holes, and the screw screwed to the bottom end of the support column passes through one of the first adjustment holes.

4. The nut detection device according to claim 2, characterized in that, A through hole is provided at one end of the cross section, and the screw screwed to the top of the support column passes through the through hole.

5. The nut detection device according to claim 4, characterized in that, The cross plate is also provided with a second adjustment hole, and the metal sensor is inserted into the second adjustment hole.

6. The nut detection device according to claim 1 or 5, characterized in that, Each of the metal sensors is screwed with two locking nuts, which are located on both sides of the cross plate. The two locking nuts are used to clamp one of the metal sensors together.

7. The nut detection device according to claim 1, characterized in that, Two clamping surfaces are provided on the outer side wall of the support column, and the two clamping surfaces are centrally symmetrical about the axis of the support column.

8. The nut detection device according to claim 1, characterized in that, A protrusion is provided on each of the two ends of the bottom surface of the base.

9. The nut detection device according to claim 8, characterized in that, The base is also provided with several fixing holes, each of which penetrates the base and the protrusion.

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