KR200342158Y1 - Apparatus for automatic assembling of bolts - Google Patents

Abstract

The present invention provides an automatic bolt assembly device. The apparatus is a bolt automatic for assembling and mounting each of the plurality of bolt fixing parts of a bracket having a plurality of bolt fixing parts for heating and pressing one end of the bolt to weld a plurality of generally long pin-shaped bolts. An assembling apparatus, specifically: at least one feeding means for aligning the bolts and continuously supplying them in a row; At least one extrusion means for stopping the bolts supplied by the feeding means in the first position and moving the bolts stopped in the first position one by one to the second position; At least one conveying means for conveying the bolt moved to the second position by the extruding means to a third position for heating one end of the bolt; Heating means for heating one end of the bolt transferred to the third position; And a robot means for holding the bolt heated by the heating means and pressing the bolt into the bolt fixing portion of the bracket. According to the device of the present invention, the process of welding, assembling by heating and pressing the bolts can be made automatically, so that the process time is shortened and proceeds automatically automatically, thereby improving productivity.

Description

Bolt automatic assembly device {APPARATUS FOR AUTOMATIC ASSEMBLING OF BOLTS}

The present invention relates to an assembling apparatus for automatically assembling a plurality of bolts, and more particularly, various types of bolts are continuously supplied according to their shapes, and heated in sequence, for example, formed on a rear surface of a lamp bracket of a vehicle. The present invention relates to a bolt automatic assembly device configured to automate an assembly process of automatically pressing and welding a plurality of bolt fixing parts.

In general, as shown in FIG. 1, a vehicle lamp includes a lamp bracket 20 for fixing the lamp bulb 26 from the rear and a lamp made of a transparent material for protecting the lamp bulb 26 in front of the lamp bracket 20. And a lens 24. Such vehicle lamps must be securely and precisely fixed to the vehicle frame 28. To this end, after the plurality of bolts 10 are welded and fixed to the lamp bracket 20, the bolts 10 are inserted into the bolt fixing holes 29 formed in the vehicle frame 28 and fixed with nuts 18. Done. At this time, the bolt 10 of the metal material is generally fixed by being heated at one end thereof and press-fitted into the bolt fixing part 22 of the lamp bracket 20 made of resin, that is, plastic.

Examples of such bolts are shown in Figures 2 (a) and (b). A threaded bolt 10 is shown in FIG. 2A, and a pivoted bolt 30 is illustrated in FIG. 2B. As illustrated, the threaded bolt 10 is generally in the form of a long cylindrical shape or pin, and consists of a screw portion 12 having a screw formed at an outer circumference of one end thereof, and a bolt fixing part 22 of the bracket 20 at the other end thereof. It is composed of a welded portion 16 is pressed and welded to the), the shoulder portion 14 is formed between the threaded portion 12 and the welded portion (16). A plurality of protrusion patterns 18 are formed on the surface of the weld portion 16 to further increase the welding bonding force with the bolt fixing portion 22 made of plastic. On the other hand, the pivot bolt 30 is similarly formed with a pivot pin 32 at one end and the other end of the pattern 38 and the shoulder part 34 formed of the weld 36 and a plurality of protrusions formed on the surface thereof. Have It has two opposing surfaces 12, 14 formed by folding a rectangular strip in half.

The bolts 10 and 30 are assembled by being fitted to bolt fixing parts 22 formed at a plurality of positions on the rear surface of the lamp bracket 20 as shown in FIG. 1. In assembly, the welds 16, 36 of the bolts 10, 30 are heated hot, and the heated welds 16, 36 are press fit into the bolt fixing part 22. Since the bolt fixing part 22 is made of plastic, it is appropriately melted by the heat of the heated welding parts 16 and 36, and the bolt fixing part 22 is firmly fixed to the welding part of the bolt while cooling. Thereafter, the lamp bracket 20 in which the bolts 10 and 30 are welded and assembled may be assembled to the vehicle frame 28.

By the way, in the assembly process in the prior art, the worker was heated one by one to assemble the various bolt fixing part 22 of the bracket 20 was very inefficient. Furthermore, the bolt was more inefficient in various cases, such as threaded or pivoted. Therefore, it has been desired to automate the process of assembling a plurality of bolts 10 of various forms in various parts of the bracket 20.

Therefore, the present invention provides a new bolt automatic assembly device configured to automatically heat a plurality of bolts of various types and automatically press-fit and weld a plurality of bolt fixing parts formed on a bracket such as a lamp bracket of a vehicle. It has a purpose to propose.

In addition, another object of the present invention is to propose a bolt automatic assembly apparatus, which can be quickly made assembling work by each step of the automatic feeding, heating and press-fitting of the bolt.

1 is a schematic diagram illustrating a bolt to be processed in the apparatus of the present invention and a bracket to which the bolt is assembled.

Figure 2 is a schematic diagram illustrating the bolt form to be handled in the device of the present invention.

Figure 3 is a schematic plan view showing the overall automatic bolt assembly according to an embodiment of the present invention.

Figure 4 is a schematic side view showing the overall automatic bolt assembly according to an embodiment of the present invention.

Figure 5 is a schematic plan view showing in detail the main portion of the automatic bolt assembly according to an embodiment of the present invention in detail.

6a and 6b is a schematic view showing the structure and operation of the bolt extrusion unit of the automatic bolt assembly according to an embodiment of the present invention.

7a and 7b is a schematic view showing the structure and operation of the bolt transfer unit of the automatic bolt assembly according to an embodiment of the present invention.

Figure 8 is a schematic view showing the structure of the heating unit of the automatic bolt assembly according to an embodiment of the present invention.

9 is a schematic view showing an example of a finger unit of the automatic bolt assembly according to an embodiment of the present invention.

10 is a schematic view showing another example of the finger unit of the automatic bolt assembly according to an embodiment of the present invention.

<Description of the symbols for the main parts of the drawings>

10,30: screw bolt, pivot bolt 20: lamp bracket

100: automatic bolt assembly unit 110: bowl feeder

120: linear feeder 130: extrusion unit

140: transfer unit 150: heating unit

160: robot arm 170,270: finger unit

180: bracket stand 190: work frame

200: control unit

In order to achieve the above object, according to the present invention, each of the plurality of bolt fixing part of the bracket having a bolt fixing part of the number for welding and welding the end of the bolt by heating and pressing one end of the bolt; It provides a bolt automatic assembly device for assembling and mounting. The automatic bolt assembling apparatus includes: at least one feeding means for aligning and continuously supplying the bolts in a row; At least one extrusion means for stopping the bolts supplied by the feeding means at a first position and moving the bolts stopped at the first position one by one to a second position; At least one conveying means for conveying said bolt moved to said second position by said extruding means to a third position for heating one end of said bolt; Heating means for heating one end of the bolt transferred to the third position; And a robot means for holding the bolt heated by the heating means and pressing the bolt into the bolt fixing part of the bracket.

By the automatic bolt assembling apparatus according to the present invention, a plurality of bolts of various types are automatically aligned, supplied, and automatically press-fitted by a robot means to weld and assemble, so that the bolt assembly process can be automated. It works.

Here, the extruding means may include a stopper for stopping the bolts supplied by the feeding means, a bolt receiving portion for receiving one of the stopped bolts, and an actuator for reciprocating the bolt receiving portion. The conveying means may include a tongs device for picking up and transporting the bolts arranged in the second position one by one by the extrusion means, and an actuator for moving the tongs device vertically and horizontally.

According to a preferred embodiment of the present invention, such feeding means, extrusion means, and transfer means may be configured by one set according to each bolt form. For example, one for threaded bolts, one for pivoted bolts, and other types of bolts may be configured.

On the other hand, the heating means may include a bolt heating receiving portion for receiving and heating one end of the bolt in the third position, and a high frequency heater for electrically heating the bolt heating receiving portion.

In addition, the robot means includes a finger means for gripping the bolt heated in the bolt heating accommodating portion, and a robot arm for injecting the finger means in three dimensions to press into the bolt fixing part at a predetermined position It can be configured by. The bolt is made of metal, and the finger means may be configured to grip the bolt by magnetic force. Alternatively, the finger means may comprise a forceps device for holding one end of the bolt.

Furthermore, cooling means for blowing air to cool when the bolt is not held on the finger means may be further mounted to the bolt heating receiving portion. The finger means may further include a bolt presence check sensor for detecting whether or not the bolt is held.

Specific and exemplary embodiments of the present invention having the above configuration will be described in detail with reference to the accompanying drawings.

3 to 10 are shown in whole and in part the automatic bolt assembly according to an embodiment of the present invention. 3 is a plan view as viewed from above as a whole, FIG. 4 is a side view as viewed from the side as a whole, FIG. 5 is a partial detailed plan view, and FIGS. 6 to 10 are schematic views showing each component in more detail.

Automatic bolt assembly 100 according to an embodiment of the present invention, as already described above with reference to Figures 1 and 2, by heating one end of the bolts 10, 30 having a generally long pin-shaped It is a device for automatically assembling to the bracket 20 having a plurality of bolt fixing part 22 for pressing and welding. In particular, according to the present automatic bolt assembly apparatus, there are advantages in that various types of bolts, for example, various types of bolts such as threaded bolts and pivoted bolts, can be automatically welded to the bracket.

Specifically, according to the present invention, the bolt automatic assembly device 100 is largely feeding unit (110, 120; 110 ', 120'), extrusion unit (130, 130 '), transfer unit (140, 140'), heating It may be configured to include a unit 150 and the robot unit (160, 170; 270). The bolt automatic assembly device 100 having such constituent units automatically supplies a plurality of bolts 10 and 30 of various types, respectively (supply paths: P1, P2, P3, and P4), and heats the work frame 190. It is welded and assembled by automatically indenting (P5) one by one to a plurality of bolt fixing portions 22 of the bracket 20 fixed to the bracket stand 180 on a predetermined position.

The feeding units 110, 120 (110 ', 120') shown in Figs. 3 and 4 are means for continuously supplying the bolts in a row. The feeding unit may include a bowl feeder 110, 110 ′ and a linear feeder 120, 120 ′ disposed on the work frame 190. By means of feeding means, the bolts 10, 30 are automatically arranged in a row and uniformly supplied along the paths P1, P2; P1 ', P2'. In the illustrated example, the feeding unit is divided into sets 110 and 120 for supplying the threaded bolts 10 and sets 110 'and 120' for supplying the pivoted bolts 30, respectively. The two sets of feeding units have a similar configuration to each other.

A plurality of bolts 10 are stored in the bolt storage of the large concave shape of the bowl feeder 110. The bolts in the bolt reservoir are aligned and progress in line with the spiral guide which is formed along the inner side of the outer wall of the bolt reservoir in accordance with the vibration of the vibrator. This traveling path is schematically indicated by P1 in the figure. The bolts lined up in this manner may be constantly aligned up and down by the linear feeder 120 to travel along the path P2. Linear feeder 120 is bolted by the vibrator similar to the bowl feeder 110 except that the guide that the bolts 10 are a straight line. The bolts that are aligned by the linear feeder 120 and proceed in a line are once stopped by the stopper 134 of the extrusion unit 130.

The extrusion units 130 and 130 'are means for stopping the bolts supplied by the feeding unit at the first position and for moving one of the stopped bolts to the second position. In the example shown, the extrusion unit is divided into sets 130 for supplying the threaded bolts 10 and sets 130 'for supplying the pivoted bolts 30, respectively. The two sets of extrusion units have a similar configuration to each other. Extrusion unit 130 may be of a device configuration for moving one of the stopper 134 having a stop surface for blocking the end of the linear feeder 120 and the bolts stopped by the stopper. In FIG. 3, the direction in which the bolt is moved by the extrusion unit 130 is represented schematically as P3.

Figure 5 shows the extrusion unit on both sides, Figure 6a and 6b is shown in more detail the structure and operation of a set of extrusion unit 130. As shown, the extrusion unit 130 according to a preferred embodiment of the present invention is a stopper 134 for stopping the bolt 10, and the shortest (first position) that is stopped by the stopper 134 ( A bolt receiving portion 136 for accommodating the bolt 10 of the 132, an actuator 138 for moving the bolt 10 accommodated in the bolt receiving portion 136 to the second position 133, and an extrusion unit It may be configured to include a fixed frame 139 and the like fixed to the working frame 190.

The stopper 134 is disposed at an end of the feeding unit, that is, the linear feeder 120 to stop the bolt 10 supplied by the linear feeder 120, and the bolt 10 stopped by the stopper 134 as shown. Are stopped in a line along the narrow feeding passage of the linear feeder 120. The bolt of the shortest of the bolts stopped by the stopper 134 is inserted into the bolt receiving portion 136. When the actuator 138 operates to move the bolt receiving portion 136, the bolt is moved to the first position 132. Is moved to the second position 133. The bolt 10 moved to the second position 133 is ready to be transferred to a subsequent transfer means, that is, the transfer unit 140. In particular in Figure 5 the movement path of the bolt by this extrusion unit is well indicated by arrows (P3, P3 '). The actuator 138 of the extrusion unit 130 moves the bolt 10 to the second position and passes it to the transfer unit 140. The actuator 138 then operates in the reverse direction to move the other bolt to be received in the bolt receiving portion 136. The extrusion unit 130 repeats this reciprocating operation. The extrusion unit 130 ′ performs a similar reciprocating motion with respect to the pivoted bolt 30.

In the automatic bolt assembly 100 according to the present invention, the transfer unit (140, 140 ') is a third position by one bolt (10, 30) arranged in the second position by the extrusion unit (130, 130') Means to transfer them. In the illustrated example, the transfer unit is installed in a set 140 for supplying the threaded bolt 10 and a set 140 'for supplying the pivoted bolt 30, respectively, as shown in FIGS. 3 and 5. In the figure, one set 140 'is omitted. The two sets of transfer units have a similar configuration to each other. In the figure, the movement path of the bolt by the transfer units 140 and 140 'as the paths P4 and P4' is shown.

Such a transfer unit is shown in FIGS. 3 to 5, and FIGS. 7A and 7B. As shown, the conveying unit 140 is a tongs device 142 for picking up and conveying the bolts provided at the second position 133 by the extrusion means 130 one by one, and the tongs device 142 vertically An actuator (not shown) for movement and a horizontal movement actuator 146 that connects and actuates the actuator with links 143, 144, and 145 to move the actuator horizontally again. . Since the structure of the actuator for moving the forceps of the forceps device 142 can be easily known to those skilled in the art, this description is omitted in the design. The transfer unit 140 may be fixed on the working frame 190 to have a predetermined height by a fixed frame 147. The bolt 10 moved along the path P3 by the extrusion unit 130 is picked up by the tong device 142 of the transfer unit and is transported along the path P4 so that the bolt heating accommodating part of the heating unit 150 is moved. 152 may be loaded.

In the automatic bolt assembly 100 according to the present invention, the heating unit 150 is the bolt (10, 30) disposed in the third position, that is, the bolt heating receiving portion 152 by the transfer unit (140, 140 ') Means for heating. In the example shown, the transfer unit transfers the threaded bolt 10 and the pivoted bolt 30 to the bolt heating receptacle 152, respectively, for example, after transferring three threaded bolts 10 one by one and pivoting them. It can be operated by transferring one type bolt 30. This may vary depending on the type and number of bolts required for the bracket 20 to which the bolts 10 and 30 are assembled. This transfer order may be pre-programmed and stored in the controller 200 as shown in FIG. 4. According to this pre-programmed transfer sequence, the operations of the extrusion units 130 and 130 'and the transfer units 140 and 140' described above can be controlled, and the operation of the robot units 160 and 170 thereafter can also be controlled. Can be controlled. Accordingly, there is an advantage that it can automatically supply the desired number of bolts of the desired type, with the advantage that it is not necessary to include a plurality of heating units according to each bolt type.

The heating unit 150 includes one bolt heating receiving portion 152 to which the bolt is loaded by the transfer unit and a high frequency heater 156 for electrically heating the bolt heating receiving portion 152. In addition, the fixing frames 154 and 155 may be connected to each other under the bolt heating accommodating part 152 through the link part 153 of the insulating material, and the heating unit 150 may be fixed to the work frame 190. . The high frequency heater 156 may use a commercially available high frequency induction heating apparatus, and the bolt heating receiving portion 152 has a strong property of heat of ceramic material and particularly the welded portions 16 and 36 of the bolts 10 and 30. The welding part of the bolt accommodated in the bolt heating accommodating part 152 by the transfer unit can be heated by the operation of the high frequency heater 156.

Meanwhile, a hole is formed in the center of the bolt heating accommodating part 152, and an air injection device (not shown) for discharging the compressed air through the hole may be further disposed. This air spraying device can be used as a means for cooling the finger of the robot unit, which presses the bracket into the bracket by holding the hot bolt, as described below.

In the automatic bolt assembly 100 according to the present invention, as shown in Figure 3, 4 and 9, 10, the robot unit 160, 170, 270 is the third by the heating unit 150 Position, that is, means for automatically conveying and press-fitting the bolts 10 and 30 heated in the bolt heating accommodating part 152 to the bolt fixing part 22 of the bracket 20 which is the target position. The robot unit may include a finger unit (170, 270) and the robot arm 160. Finger units 170 and 270 are means for gripping the bolts heated in the bolt heat receiving portion 152. The robot arm 160 moves the finger units 170 and 270 to the plurality of bolt fixing parts 22 of the bracket 20 so that the bolt held by the finger units 170 and 270 is fixed to the bolt fixing part 22 of the bracket. Means to press in.

Robot arm 160, as is well shown in Figure 4, has a plurality of rotary joints and can further move the finger means (170, 270) vertically. Therefore, the bolt may be moved along the bolt movement path, which is simply illustrated as the path P5, and the bolt may be pressed into the bolt fixing part 22 of the bracket 20 fixed on the bracket stand 180. To be. Once the bolt is pressed into the bolt fixing part 22, the bolt and bolt fixing part are welded strongly while the inner part of the bolt fixing part 22 is melted and cooled by the hot bolt welding part.

As shown in Figure 9 and 10, the finger unit may have a structure of various forms. The finger unit 170 shown in FIG. 9 has a structure in which the bolts 10 and 30 are gripped by a magnet force. The finger unit 170 includes a space 172 into which the bolt is inserted and a magnet that generates a magnetic field in the space 172, that is, an electromagnet 174 in the illustrated example. An actuator 176 is also included to press in the bolt. In addition, a sensor 175 for detecting whether the bolt is held in the space 172 may be arranged. The finger unit 270 shown in FIG. 10 illustrates a structure of gripping a bolt with a forceps device such as a forceps device having three jaws. Finger unit 270 includes three jaws 272 to pick up bolts. Like the finger unit 170, the actuator 276 for pressing the bolt and may include a sensor 275 for detecting the presence or absence of the bolt.

In particular, the finger unit 170 using a magnet among these finger units may cause a problem that the magnetic force is deteriorated due to the heat of the hot bolt. In order to solve this problem, it is desirable to occasionally cool the space 172 into which the bolt is inserted using compressed air at room temperature. As already mentioned above, the finger unit 170 is waiting on the bolt heating receiving portion 152 of the heating unit 150, and there is a bolt in the bolt heating receiving portion 152 and the finger unit 170. At the moment when not, it can be configured to cool the finger unit 170 by injecting air from the compressed air injector (not shown) disposed below the bolt heating receiving unit 152.

By the automatic bolt assembly 100 according to the present invention, a plurality of bolts (10, 30) of various forms are automatically aligned by a certain number (for example, three screw bolts, one pivot bolt) Since it can then be welded and assembled by the automatic press-in by the robot unit, there is an advantage that the process of assembling a plurality of bolts of various types, such as a vehicle lamp bracket 20 can be easily automated.

In the above, the present invention has been described with reference to the specific embodiments shown in the drawings. The illustrated embodiment is merely an example showing the features of the present invention in detail, it is pointed out that it does not limit the technical scope of the present invention. Within the scope of the appended claims, those skilled in the art can readily conceive of other embodiments that modify, modify, and combine the various features of the present invention. Therefore, it should be pointed out that the spirit of the present invention should be interpreted as described in the claims, not by the specific embodiments described.

According to the bolt automatic assembly device according to the present invention of the structure as described above, a plurality of bolts of various types can be aligned and heated as desired, and automatically on a plurality of bolt fixing parts of a bracket such as a lamp bracket of a vehicle, for example. Welding assembly can be carried out by press fitting. In addition, according to the present invention, the respective steps of feeding, heating and press-fitting of the bolt are automatically performed, so that a remarkable effect can be obtained such that the assembly work can be performed quickly, and the bolt assembly process can be automated and the productivity is greatly improved. Can be.

Claims (8)

The plurality of bolt fixing parts 22 of the bracket 20 having a plurality of bolt fixing parts 22 for welding a plurality of generally long pin-shaped bolts 10 and 30 to press and weld one end of the bolt. In each of the bolts automatic assembly device 100 for assembling and mounting: At least one feeding means (110,120) for aligning the bolts and continuously supplying the bolts in a row; At least one extrusion means (130) for stopping the bolts supplied by the feeding means at a first position and moving the bolts stopped at the first position one by one to a second position; At least one conveying means (140) for conveying said bolt moved to said second position by said extruding means to a third position for heating one end of said bolt; Heating means (150) for heating one end of the bolt transferred to the third position; And Robot means (160, 170) for holding the bolt heated by the heating means to press the bolt fixing portion 22 of the bracket It characterized in that it comprises a bolt automatic assembly device. The method of claim 1, wherein the extrusion means 130, the stopper 134 for stopping the bolts supplied by the feeding means, a bolt receiving portion 136 for receiving one stop bolt, and the bolt receiving portion And an actuator (138) for reciprocating (136). The method of claim 1, wherein the conveying means 140 is a clamping device 142 for picking up and conveying the bolts arranged in the second position by the extrusion means 130 one by one, and vertically and horizontally And an actuator for moving to the bolt. The method of claim 1, wherein the heating means 150, the heating portion 150 for receiving and heating one end of the bolt in the third position, and electrically heating the bolt heating receiving portion 152 And a high frequency heater 156 for automatic bolt assembly. According to claim 1, wherein the robot means, the finger means 170 for holding the bolt heated in the bolt heating receiving portion 152 by magnetic force, and transfer the finger means in three dimensions in a predetermined position And a robot arm (160) for press-fitting into the bolt fixing part (22). According to claim 5, The finger means (270) is composed of a clamping device for holding one end of the bolt, automatic bolt assembly device. 7. The bolt according to claim 5 or 6, further comprising cooling means for blowing air to cool the bolt means when the bolts are not held on the finger means (170, 270). Automatic assembly device. The automatic bolt assembling apparatus according to claim 5 or 6, wherein the finger means (170, 270) is further provided with a bolt presence check sensor for detecting whether the bolt is held or not.