Automatic production line feeding device

Abstract

An automatic production line feeding device includes a base unit, a guide unit, a rotating unit and a measuring unit. The base unit includes a connecting seat and a shaft seat. The connecting seat has a guide slot extending upward and downward and open to the extending direction of the shaft seat. The shaft seat has a body extending horizontally, a suspension hole and a shaft hole in the body. The guide unit includes a suspension member passing through the suspension hole and a guide member movably passing through the guide slot and connected to the suspension member. The rotating unit includes a rotating motor and a hollow shaft rotatable in the shaft hole driven by the rotating motor. The measuring unit includes a measuring seat and a force sensor arranged in the measuring seat and against the bottom of the body. Thus, the force of the hollow shaft can be effectively transmitted to the force sensor.

Description

TECHNICAL FIELD

[0001] The present application relates to a feeding device, in particular to an automatic production line feeding device. BACKGROUND

[0002] A conventional intelligent mobile phone FPC line automatic assembly system, as shown in Chinese patent publication No. CN112659169, sucks a first terminal head by a negative pressure suction nozzle, then moves the first terminal head above a first terminal seat of an intelligent mobile phone, drives the first terminal head to be pressed into the first terminal seat by a mechanical hand, controls the pressing force within 10N by a force sensor, and then releases the suction of the negative pressure suction nozzle to complete the combination of the first terminal head and the first terminal seat. The force sensor is directly connected between the mechanical hand and the negative pressure suction nozzle.

[0003] However, the patent does not disclose the further technology of the force sensor. Since the force sensor is directly connected between the mechanical hand and the negative pressure suction nozzle, the force sensor must be responsible for the structural support between the mechanical hand and the negative pressure suction nozzle in addition to measuring force. In this way, the sensitivity of the force sensor will inevitably be limited, and in the case of unknown actual technology of the force sensor, the general user cannot implement according to the technology disclosed in the patent, so there is a need for further improvement. SUMMARY

[0004] The purpose of the present application is to provide an automatic production line feeding device that overcomes the shortcomings of the background art.

[0005] The automatic production line feeding device of the present application comprises a moving unit, a base unit, a guide unit, a rotating unit, a measuring unit and a control unit. The moving unit comprises a driving member capable of being driven to move. The base unit comprises a connecting seat arranged on the driving member and capable of being driven to move by the driving member, and a shaft seat arranged on the connecting seat and extending transversely. The connecting seat has a guide groove extending upward and downward and open toward the extending direction of the shaft seat. The shaft seat has a body arranged above the connecting seat and extending transversely, a suspension hole located in the body and corresponding to the guide groove and extending upward and downward, and a shaft hole located in the body and arranged above the suspension hole and extending upward and downward. The guide unit comprises a suspension member passing through the suspension hole, and a guide member movably passing through the guide groove and connected to the bottom of the suspension member and extending transversely out of the guide groove. The rotating unit comprises a rotating motor arranged on the guide member, a hollow shaft in a tubular shape and extending upward and downward and passing through the shaft hole and capable of being driven to rotate in the shaft hole by the rotating motor, and an encoder arranged on the guide member and capable of measuring the rotating angle of the hollow shaft. The measuring unit comprises a measuring seat arranged on the guide member, and a force sensor arranged on the measuring seat and abutting against the bottom of the body. The control unit is electrically connected to the moving unit, the rotating motor, the encoder and the force sensor.

[0006] The automatic production line feeding device of the present application, the suspension member has a large diameter portion located above the body, a small diameter portion with an outer diameter smaller than that of the large diameter portion and extending downward from the large diameter portion through the suspension hole and connecting the guide member, and an elastic member abutting between the body and the guide member.

[0007] The automatic production line feeding device of the present application, the elastic member is a compression spring surrounding the small diameter portion.

[0008] The automatic production line feeding device of the present application, the automatic production line feeding device further comprises a vacuum unit electrically connected to the control unit, and the vacuum unit is used for communicating with the hollow shaft to perform air extraction or vacuum breaking inside the hollow shaft.

[0009] The automatic production line feeding device of the present application is applied to a material piece, the material piece can be vacuum sucked by the bottom of the hollow shaft, the rotating unit further comprises a camera electrically connected to the control unit, the camera is used for shooting the material piece sucked by the hollow shaft and generating a material piece image, the control unit judges the angle between the material piece and a preset image according to the comparison between the material piece image and the preset image, and controls the rotating motor to drive the hollow shaft to rotate, so that the material piece is rotated to the same angle as the preset image.

[0010] The automatic production line feeding device of the present application is controlled by the encoder to increase the rotation accuracy.

[0011] The present application has the advantage that the hollow shaft force is effectively transmitted to the force sensor on the other side, and the vacuum in the hollow shaft is controlled to generate the action of sucking or dropping the material, thereby achieving the effect of automatic material taking and feeding. BRIEF DESCRIPTION OF DRAWINGS

[0012] Figure 1 is an incomplete front view of one embodiment of the automatic production line feeding device of the present application;

[0013] Figure 2 is an electrical block diagram of the embodiment;

[0014] Figure 3 is Figure 1 is a view omitting some elements;

[0015] Figure 4 is Figure 3 is a top view;

[0016] Figure 5 is a sectional view taken along the V-V line in Figure 4

[0017] is a motion schematic view showing that the hollow shaft in the embodiment is above a material; Figure 6

[0018] is a view similar to Figure 7 , showing that the hollow shaft moves downward and touches the material; Figure 6

[0019] Figure 8 is a view similar to Figure 7 , showing that the hollow shaft sucks the material and moves upward;

[0020] Figure 9 is a view similar to Figure 8 , showing that the material moves above a camera;

[0021] Figure 10 is a material image taken by the camera, showing that the material angle is deviated;

[0022] Figure 11 is a view similar to Figure 10 ​a view illustrating a state in which the material piece is correctly angled without deviation;

[0023] Figure 12 a schematic view illustrating a state in which the hollow shaft is lowered to make the material piece contact a substrate;

[0024] Figure 13 a view similar to Figure 12 a view illustrating a state in which the hollow shaft is separated from the material piece and is moved upward. DETAILED DESCRIPTION

[0025] The present application will be described in detail below with reference to the accompanying drawings and embodiments.

[0026] Referring to Figure 1 , 2 , 3, an embodiment of a feeding device of an automatic production line of the present application is applied to a material piece 91 (see Figure 6 ), and includes a moving unit 2, a base unit 3, a guide unit 4, a rotating unit 5, a vacuum unit 6, a measuring unit 7, and a control unit 8.

[0027] The moving unit 2 includes a driving member 21 that can be driven to move. In the embodiment, the moving unit 2 can move in multiple directions, and the driving member 21 is a linear motor. Since the multiple-direction movement is a common technique for general mechanical elements, the detailed components are not described further.

[0028] The base unit 3 includes a connecting seat 31 arranged on the driving member 21 and movable with the driving member 21, and a shaft seat 32 arranged on the connecting seat 31 and extending transversely. The connecting seat 31 has a guide groove 311 extending upward and downward and open toward the extending direction of the shaft seat 32. The shaft seat 32 has a body 321 arranged above the connecting seat 31 and extending transversely, a suspension hole 322 located on the body 321 and penetrating upward and downward corresponding to the guide groove 311, and a shaft hole 323 located on the body 321 and spaced apart from the suspension hole 322 and penetrating upward and downward.

[0029] Referring to Figure 3 , 4 , 5, the guide unit 4 includes a suspension member 41 passing through the suspension hole 322, and a guide member 42 movably passing through the guide groove 311 and connected to the bottom of the suspension member 41 and transversely passing out of the guide groove 311. In the embodiment, the guide member 42 is limited by the connecting seat 31 to slide along the guide groove 311.

[0030] The suspension member 41 has a large-diameter portion 411 located above the body 321, a small-diameter portion 412 with an outer diameter smaller than that of the large-diameter portion 411, extending downward from the large-diameter portion 411 through the suspension hole 322 and connecting to the guide member 42, and an elastic member 413 abutting between the body 321 and the guide member 42 for cushioning. In this embodiment, the elastic member 413 is a compression spring surrounding the small-diameter portion 412.

[0031] See Figure 2 , 5 The rotating unit 5 includes a rotary motor 51 disposed on the guide member 42, a hollow shaft 52 that is tubular and extends vertically through the shaft hole 323 and can be driven by the rotary motor 51 to rotate within the shaft hole 323, an encoder 53 disposed on the guide member 42 to measure the rotation angle of the hollow shaft 52, and a camera 54. In this embodiment, the encoder 53 can generate codes based on the rotation of the hollow shaft 52, and then calculate the rotation angle. The camera 54 is disposed below the path along which the hollow shaft 52 is driven to move.

[0032] The vacuum unit 6 is used to connect to the hollow shaft 52 to evacuate or break the vacuum inside the hollow shaft 52. In this embodiment, the vacuum unit 6 is a vacuum extractor. Since the technology of achieving or breaking a vacuum by evacuating and venting air through a vacuum extractor is a common technology, it will not be described further in this specification.

[0033] The measurement unit 7 includes a measurement base 71 disposed on the guide member 42, and a force sensor 72 disposed on the measurement base 71 and abutting against the bottom of the body 321. In this embodiment, the force sensor 72 is a strain gauge, but it is not limited thereto.

[0034] The control unit 8 is electrically connected to the moving unit 2, the vacuum unit 6, the rotary motor 51, the encoder 53, the camera 54, and the force sensor 72.

[0035] See Figure 6 In use, the material 91 is transported by the feeding device of the automated production line, and the material 91 is sucked up by vacuum through the bottom of the hollow shaft 52, and the material is put down after the vacuum is broken.

[0036] See Figure 2 , 6 7. When material needs to be picked up, the control unit 8 first controls the moving unit 2 to move so that the hollow shaft 52 is above the material 91 (see...). Figure 6), then the driving member 21 is driven to move downward until the hollow shaft 52 touches the material piece 91 (see Figure 7 ), the reaction force will cause the hollow shaft 52, the rotary motor 51 and the guide member 42 to be biased upward, and when the guide member 42 is biased upward along the guide slot 311, the measuring seat 71 and the force sensor 72 on the other side will be biased upward as well, at which time the force sensor 72 will push against the body 321 and sense the force, and when the force sensed by the force sensor 72 reaches a predetermined clamping force value, the control unit 8 controls the vacuum unit 6 to draw air, so that a vacuum is formed inside the hollow shaft 52 to suck the material piece 91. Referring to Figure 2 、 8 , finally, the control unit 8 controls the moving unit 2 to move upward, thereby moving the material piece 91 upward as well, to complete the material taking operation. In this embodiment, the predetermined clamping force value is 2N, but it is not limited thereto.

[0037] Then, referring to Figure 2 、 9 , 10, the material piece 91 can be moved above the camera 54, and the camera 54 can take a picture of the material piece 91 sucked by the hollow shaft 52 upward to generate a material piece image 541, and the control unit 8 judges whether the material piece 91 has an angle deviation from a preset image (not shown in the figure) according to a comparison between the material piece image 541 and the preset image, and if there is an angle deviation (as shown in Figure 10 , the control unit 8 controls the rotary motor 51 to drive the hollow shaft 52 to rotate, so as to drive the material piece 91 to rotate to the same angle without deviation as the preset image (as shown in Figure 11 ), and in the rotating process, the encoder 53 is used for feedback control to increase the accuracy of rotation. For example, when the control unit 8 judges that the angle has a deviation and drives the rotary motor 51 to rotate to 5 degrees 23 minutes 19 seconds, the encoder 53 will feed back a signal to the control unit 8 at the same time, and if the encoder 53 judges that it has not reached 5 degrees 23 minutes 19 seconds, the control unit 8 will continue to drive the rotary motor 51 to rotate to the set position.

[0038] Referring to Figure 2 、 12 , 13, when the control unit 8 controls the material piece 91 to move to a predetermined position where it is to be placed down, the control unit 8 drives the driving member 21 to move downward until the material piece 91 touches a substrate 92 located below (see Figure 12), the reaction force will push the force sensor 72 against the body 321 and sense the force, the control unit 8 controls the vacuum unit 6 to exhaust when the force sensor 72 senses a predetermined dropping force value, so that the hollow shaft 52 is not in vacuum and no longer sucks the material 91, finally the control unit 8 controls the moving unit 2 to move upward (see Figure 13 ), at this time the material 91 stays on the substrate 92 to complete the material dropping operation, so that the material 91 can continue the subsequent processing procedure. In this embodiment, the predetermined dropping force value is 2N, but it is not limited.

[0039] In summary, since the guide 42 is suspended by the suspension 41 and can move in the guide groove 311, it is structurally supported, so that the force of the hollow shaft 52 can be effectively transmitted to the force sensor 72 on the other side, thereby controlling the vacuum in the hollow shaft 52 to generate suction or dropping action of the material 91. The force sensor 72 is simply used to measure force and does not participate in structural support, so the sensing sensitivity is higher. Compared with the prior art automatic assembly system, the detailed technology of the force sensor is not disclosed, and it cannot be implemented. The automatic production line feeding device of the present application can clearly achieve the effect of automatic material taking and feeding, so it can indeed achieve the purpose of the present application.

Claims

1. An automated production line feeding device comprising a mobile unit, said mobile unit including a drive member that is drivable to move, characterized in that: The automatic production line feeding device further comprises a base unit, a guide unit, a rotating unit, a measuring unit and a control unit. The base unit comprises a connecting seat arranged on the driving member and capable of moving with the driving member, and a shaft seat arranged on the connecting seat and extending transversely. The connecting seat has a guide slot extending upward and downward and open toward the extending direction of the shaft seat. The shaft seat has a body arranged above the connecting seat and extending transversely, a suspension hole penetrating upward and downward and corresponding to the guide slot, and a shaft hole penetrating upward and downward and arranged above the body and spaced from the suspension hole. The guide unit comprises a suspension member penetrating the suspension hole, and a guide member movably penetrating the guide slot and connected to the bottom of the suspension member and transversely penetrating the guide slot. The rotating unit comprises a rotating motor arranged on the guide member, a hollow shaft penetrating the shaft hole and extending upward and downward and capable of rotating in the shaft hole driven by the rotating motor, and an encoder arranged on the guide member and measuring the rotating angle of the hollow shaft. The measuring unit comprises a measuring seat arranged on the guide member, and a force sensor arranged on the measuring seat and abutting against the bottom of the body. The control unit is electrically connected to the moving unit, the rotating motor, the encoder and the force sensor.

2. The automated production line feeding device of claim 1, wherein: The suspension member has a large-diameter portion above the body, a small-diameter portion with an outer diameter smaller than that of the large-diameter portion and extending downward from the large-diameter portion and penetrating the suspension hole and connecting the guide member, and a resilient member abutting between the body and the guide member.

3. The automated production line feeding device of claim 2, wherein: The resilient member is a compression spring surrounding the small-diameter portion.

4. The automated production line feed device of claim 1, wherein: The automatic production line feeding device further comprises a vacuum unit electrically connected to the control unit, and the vacuum unit is used for communicating the hollow shaft to perform air extraction or vacuum breaking inside the hollow shaft.

5. The automated production line feeding device according to claim 4, applied to a material piece, characterized in that: The material member can be vacuum sucked by the bottom of the hollow shaft. The rotating unit further comprises a camera electrically connected to the control unit, and the camera is used for shooting the material member sucked by the hollow shaft and generating a material member image. The control unit judges the angle of the material member and the preset image after comparing the material member image with the preset image, and controls the rotating motor to drive the hollow shaft to rotate, so that the material member is rotated to the same angle as the preset image.

6. The automated production line feeding device of claim 5, wherein: During the rotation of the hollow shaft, the encoder is used for feedback control to increase the rotation accuracy.

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