KR102220936B1 - Vehicle instrument panel manufacturing device - Google Patents

Abstract

The present invention relates to an instrument panel manufacturing apparatus for a vehicle that removes foreign substances from an instrument panel assembly by applying hot air to the assembly while repeatedly raising and free-falling the assembly. The apparatus comprises: a negative pressure chamber having a negative pressure space opened upward through through-holes; an elevating tray that is installed in the upper portion of the negative pressure chamber to be elevated, has exhaust holes corresponding to the through-holes, and supports the assembly in the exhaust holes; elevating actuators that elevate the elevating tray and then free-fall the elevating tray; a cleaning air supply part installed inside the negative pressure chamber to spray the hot air upward through the through-holes and the exhaust holes so that air pressure can be applied to the instrument panel assembly supported on the elevating tray; and an exhaust means for discharging the foreign substances fallen into the negative pressure chamber after being separated from the assembly by the free fall impact of the instrument panel assembly to the outside of the negative pressure chamber. The instrument panel manufacturing apparatus for a vehicle according to the present invention described above efficiently determines whether the assembly has been normally assembled by repeatedly raising and free-falling the instrument panel assembly that has completed its assembly process, and prevents contamination of the assembly by quickly sucking and removing dust or foreign substances generated from the assembly and inspection.

Description

Vehicle instrument panel manufacturing device}

The present invention relates to an instrument panel installed in front of a driver's seat of a vehicle, and more particularly, an instrument panel manufacturing apparatus for a vehicle capable of producing a high-quality instrument panel more quickly and efficiently and efficiently verifying the assembly quality of the instrument panel. It is about.

An instrument panel installed in front of the driver's seat of a vehicle serves to inform the driver of various information related to the vehicle's condition or operation. For example, it notifies the presence or absence of an abnormality in the vehicle itself through warning lights, as well as the current speed of the vehicle, the engine speed, the mileage or fuel economy.

One of the important things about this dashboard is visibility. This is because driving is inconvenient if the information on the dashboard is not clearly visible, and depending on the personality of the driver, you may not be able to properly look forward to see the contents of the dashboard. In recent years, in order to improve the visibility of the instrument panel, a so-called supervision cluster to which high-brightness LEDs or color LCDs are applied is a trend. This instrument panel is assembled with a number of parts and has various shapes depending on the model of the vehicle.

1 is a perspective view schematically showing an example of a conventional vehicle instrument panel.

As shown, the vehicle instrument panel 11 includes a base panel 19a, a light shielding body 19b, and a transparent window 19c. The base panel 19a takes the shape of a plate and displays a scale or number. The light shielding body 19b takes a substantially cylindrical shape and is fixed to the front surface of the base panel 19a.

The light-shielding body 19b blocks surrounding light, for example, during daytime driving so that the contents of the display are clearly visible. The transparent window 19c is a transparent member made of acrylic and is mounted on the light blocking body 19b to protect the components inside the light blocking body. The base panel 19a, the light shielding body 19b, and the transparent window 19c are the parts 19 constituting the instrument panel 11, which are manufactured in their respective production lines and then assembled and transferred to the subsequent assembly line. .

However, since the base panel 19a or the light-shielding body 19b is injection-molded of plastic, it is glossy and must be matted. It is necessary to apply a matte pigment. However, in the conventional instrument panel manufacturing apparatus, there is a limitation in that it is impossible to visually inspect a component (to be coated) immediately before application of a matte pigment. In other words, a matte pigment is applied even to the defective object to be coated. This acts as a factor that increases the production cost.

In addition, the instrument panel 11, which is assembled with a base panel 19a, a light-shielding body 19b, and a transparent window 19c, requires an assembly inspection device to verify the quality of assembly after assembly, so to speak. This is because you need to check whether the assembly is complete before you can move on to the next process. If the assembly quality is not checked, defective products will be shipped out, which can greatly reduce the trust in the vehicle.

Domestic Registered Utility Model Publication No. 20-0305267 (Assembly structure of vehicle weapon E.L. instrument panel) Korean Patent Publication No. 10-1884154 (Vehicle instrument panel inspection device)

The present invention has been created to solve the above problems, and an object of the present invention is to provide an apparatus for manufacturing an instrument panel for a vehicle, which can efficiently determine whether or not the instrument panel assembly has been assembled normally.

The vehicle instrument panel manufacturing apparatus of the present invention as a means of solving the problems for achieving the above object is to remove foreign substances from the assembly by applying hot air to the assembly while repeatedly raising and freely falling the instrument panel assembly, and takes the shape of a box. And, a negative pressure chamber having a negative pressure space open to the upper side through a through hole, and installed to be elevating on an upper portion of the negative pressure chamber, and having an exhaust hole corresponding to the through hole, and the lifting for supporting the assembly on the exhaust hole A tray, a lifting actuator that freely falls after lifting the lifting tray, installed in the negative pressure chamber, and spraying hot air upwards through the through hole and the exhaust hole to apply air pressure to the instrument panel assembly supported by the lifting tray. And a cleaning air supply unit to be applied, and exhaust means for discharging foreign substances that have fallen into the negative pressure chamber after being separated from the assembly by a free fall impact of the instrument panel assembly to the outside of the negative pressure chamber.

In addition, a plurality of lifting holes are further formed around the through hole, and the lifting hole takes the form of a vertically extended round bar, and the lower end is supported by the lifting actuator, and repeats ascent and free fall when the lifting actuator is operated. The pushing rod is mounted, and the lifting tray takes the form of a square case open to the top and is supported by the pushing rod, and has a plurality of support blocks to block the lateral movement of the instrument panel assembly around the exhaust hole. , The four corners have a vertical slider, and at the upper part of the negative pressure chamber, a guide rod is provided that penetrates upward through the vertical slider to prevent lateral shaking during the lifting movement of the lifting tray, and the upper end of the guide rod , A rubber cap that prevents the vertical slider from falling out of the guide rod is detachably coupled.

In addition, the cleaning air supply unit; A horizontal shaft horizontally supported inside the negative pressure chamber and capable of axial rotation in both directions, a motor connected to the horizontal shaft and rotating the horizontal shaft in both directions, a shaft clamp coupled to both ends of the horizontal shaft to provide a support force; , It is fixed to the shaft flange, and when the motor is driven, it rotates in both directions using the horizontal shaft as a rotational center axis, and a nozzle block having a plurality of upward nozzles on an upper side thereof, and a nozzle block connected to the nozzle block through a supply hose And an air compressor that allows air that has passed through the nozzle block to be ejected to the instrument panel assembly through an upward nozzle, and is built into the nozzle block and generates heat by power applied from the outside, thereby causing the nozzle block. It includes a built-in heater that heats the air passing through it.

In addition, a partition inclined plate for vertically partitioning the inner space of the negative pressure chamber is installed in the negative pressure chamber, and the exhaust means includes; A connection duct that is mounted on the partition slope plate and receives air from the upper space of the partition slope plate and guides it to the bottom, and one end extends to the outside of the negative pressure chamber while being fitted in the connection duct, and by the action of an external vacuum pump, the partition An exhaust duct that sucks in air above the swash plate and guides it to the outside, and a filter mounted on the exhaust duct and filtering air passing through the exhaust duct.

The vehicle instrument panel manufacturing apparatus of the present invention made as described above can efficiently determine whether or not the instrument panel assembly has been properly assembled through repeated ascent and free fall of the instrument panel assembly that has completed the assembly process, and quickly detects dust or foreign matter generated from the assembly during the inspection. The intake can be removed to prevent contamination of the assembly.

1 is a perspective view schematically showing an example of a conventional vehicle instrument panel.
2 is a block diagram for describing a method of manufacturing an instrument panel for a vehicle for reference.
3 is a view for explaining a transfer unit and a pre-processing unit in the vehicle instrument panel manufacturing apparatus according to an embodiment of the present invention.
4 is a plan view of a main processing unit in the instrument panel manufacturing apparatus according to an embodiment of the present invention.
5 is a view showing an external shape of the main processing unit shown in FIG. 4.
6 is a view for explaining the operation of the main processing unit shown in FIG. 4.
FIG. 7 is a perspective view showing the driving jig and the rotation induction device of FIG. 6 separately.
8A and 8B are diagrams for explaining a rotation method of the traveling jig shown in FIG. 7.
9 is a perspective view showing a modified example of the driving jig shown in FIG. 7.
10A, 10B, and 10C are views for explaining the operation of the traveling jig of FIG. 9.
11 is an exploded perspective view showing an assembly inspection apparatus in an instrument panel manufacturing apparatus according to an embodiment of the present invention.
12 is a side cross-sectional view for explaining the internal structure of the assembly inspection apparatus shown in FIG. 11.
13A and 13B are views for explaining the operation of the assembly inspection apparatus of FIG. 11.

Hereinafter, an embodiment according to the present invention will be described in more detail with reference to the accompanying drawings.

2 is a block diagram for explaining for reference a method of manufacturing an instrument panel using an instrument panel manufacturing apparatus according to an embodiment of the present invention.

As shown, the method of manufacturing an instrument panel includes a component loading step 101, an air cleaning step 103, a heating step 105, a transfer step 107, a visual inspection step 108, an antistatic step 109, and a plasma. It includes a treatment step 111, a primer application step 113, a matte pigment coating step 115, a pigment drying step 117, an assembly step 119, and an assembly inspection step 123.

In the component loading step 101, as shown in FIG. 3, the instrument panel component (19 in FIG. 3) is placed on the conveyor 21a of the loading component transfer unit 21 and transferred at a constant speed. The component 19 refers to a component constituting the instrument panel, and naturally includes the base panel 19a and the light shielding body 19b shown in FIG. 1.

The air cleaning step 103 is a process of injecting air to a component conveyed on the conveyor 21a, and removing foreign substances from the component with the pressure of air. For example, dust or foreign matter attached to the part 19 is blown out. In addition, the heating step 105 is a process of heating the parts that have finished the air cleaning step 103 to improve the pigment fixing property to the parts. The air cleaning step 103 and the heating step 105 are performed by a pre-treatment unit 25 to be described later. A description of the preprocessing unit 25 will be described later.

The parts 19 that have been air-washed and heated by the pretreatment unit 25 are transferred to the main treatment unit 30 through a transfer step 107. The reason for transferring to the main treatment unit 30 is to apply a matte pigment to the pre-treated parts. The transfer step 107 is a process carried out by an operator, and is a process of picking up the parts 19 that have passed through the conveyor 21a and placing them on the parts holder 34h of the transfer device (31 in FIG. 4).

Subsequent visual inspection step 108, anti-static step 109, plasma treatment step 111, primer application step 113, and matte pigment coating step 115 are performed non-stop in the main processing unit 30.

The visual inspection step 108 is a process of inspecting whether a component is defective while the component fixed to the component holder 34h passes through the visual inspection section 30A. For example, it is to select a part that is defective in molding. (In Fig. 4, the light shielding body 19b is taken as an example. Other parts that enter the instrument panel follow the same process.)

The antistatic step 109 is a process of removing static electricity from the component by applying ultrasonic energy to the component exiting the visual inspection section 30A. An ultrasonic antistatic agent 41a is used for the antistatic step 109. The ultrasonic static eliminator 41a is an equipment located close to a transport path of a component moving along the traveling slit 31a. The process of removing static electricity using the ultrasonic antistatic agent 41a follows a general method.

The subsequent plasma treatment step 111 is a process of activating the interface of the component surface by applying plasma energy to the component that has finished the antistatic step. In other words, it is to improve the adhesion of the primer to the part by modifying the surface of the secondary foam. In some cases, when the primer is not used, the adhesion of the matte pigment to the part is improved. A plasma output unit 41b is used for the plasma processing step 111. The plasma output unit 41b is also disposed close to the component transfer path and applies plasma energy to the component passing in front of it.

In the primer application step 113, a primer layer is deposited on the surface of the component by spraying the primer on the plasma-treated component. The primer layer serves to more strongly adhere the matte pigment to the part. The primer application step 113 is performed in the primer application unit 43. The primer application portion 43 includes a plurality of spray nozzles 43a for spraying the primer.

The matte pigment coating step 115 is a process of laminating a matte pigment layer by spraying a matte pigment on a component on which the primer is laminated. Because injection-molded parts have a shiny property, a matte pigment layer is laminated. The matte pigment coating step 115 is performed in the matte pigment application unit 45. In addition, in order to form the matte pigment layer, a plurality of spray nozzles 45a are used.

Particularly, the component rotates while passing through the matte pigment application portion 45 in the ultrasonic antistatic agent 41a. The reason why the part rotates is because the part holder 34h rotates. A description of this principle of operation will be provided later.

After the matte pigment coating step 115 is completed, the part moves further along the traveling slit 31a, reaches the unloading section 30B, and is then sent to the conveyor dryer 47 by the operator.

The pigment drying step 117 is a process in which the parts placed on the conveyor dryer 47 are transferred and the parts are dried. A drying fan (not shown) may be installed on the top of the conveyor dryer.

When the pigment drying step 117 is completed, the assembly step 119 follows. The assembly step 119 is a process of assembling the parts that have finished the pigment drying step. In other words, the light shielding body 19b is assembled to the base panel 19a. Both the base panel 19a and the light shielding body 19b are included in the components 19 constituting the instrument panel. The assembly assembled through the assembly step 119, once, has the shape of the instrument panel 11 shown in FIG.

In the assembly inspection step 123, the assembly assembled through the assembly step 119 is repeatedly raised and freely fallen, and the assembly is subjected to fall impact energy to determine whether it is normally assembled, and vacuum pressure for foreign matters released from the assembly. It is a process of removing it to the outside by using. For the assembly inspection step 123, the assembly inspection apparatus 50 shown in FIG. 12 is used.

The assembly that has passed the assembly inspection step 123 is transferred to the outside for post-processing as a completed instrument panel.

The manufacturing apparatus of the present embodiment for implementing the manufacturing method includes a loading part transfer unit 21, a pre-treatment unit 25, a main processing unit 30, a conveyor dryer 47, and an assembly inspection device 50. Each of the components constitutes one manufacturing line for manufacturing the instrument panel.

3 is a view for explaining the loading parts transfer unit 21 and the pre-treatment unit 25 in the vehicle instrument panel manufacturing apparatus according to an embodiment of the present invention.

As shown, the loading component transfer unit 21 includes a conveyor 21a. The conveyor 21a extends horizontally and has a plurality of transfer trays 21b. The transfer tray 21b moves at a constant speed while supporting the component 19 and passes through the chamber 25a of the pretreatment unit 25. The loading part transfer part 21 serves to receive the part 19 input from the outside and pass through the pretreatment part 25.

The pretreatment part 25 passes through the part 19 conveyed by the loading part transfer part 21, and pneumatically cleans and heats a part. The reason for cleaning the parts by applying pneumatic pressure is to remove foreign substances such as dust attached to the parts, and the reason for heating is to improve the adhesion of the primer or matte pigment to the parts. Stickiness refers to a property that does not peel off.

The pretreatment unit 25 includes a chamber 25a, an air washing nozzle 25c, a filter 25d, an air pressure pump 25b, a heater 25e, and an exhaust fan 25g.

The chamber 25a takes the form of a box and passes a conveyor 21a therein. As mentioned above, the component 19 loaded in the transfer tray 21b passes through the inner space of the chamber 25a.

The air cleaning nozzle 25c is installed on the upper part of the conveying path and injects the air supplied from the air pressure pump 25b downward. The air injected downward from the air cleaning nozzle 25c is discharged to the outside through the exhaust fan 25g together with the foreign matter after removing foreign matter such as dust attached to the part 19.

The filter 25d filters air flowing into the air pressure pump 25b. By the action of the filter 25d, the air injected from the air cleaning nozzle 25c maintains a purified state.

The heater 25e operates by the power applied from the outside to heat the part 19, and is located in the vertical upper part of the part transfer path. The heating temperature of the heater is set differently depending on the type of component.

Meanwhile, the main treatment unit 30 is a device that receives and transports the parts that have passed through the pretreatment unit 25, modifies the surface of the parts, and sequentially applies a primer and a matte pigment to the modified surface.

4 is a plan view of the main processing unit 30 in the instrument panel manufacturing apparatus according to an embodiment of the present invention, and FIG. 5 is a view showing the external shape of the main processing unit shown in FIG. 4. In addition, FIG. 6 is a view for explaining the operation of the main processing unit, FIG. 7 is a perspective view showing the driving jig and the rotation induction device of FIG. 6 separately, and FIGS. 8A and 8B are views for explaining the rotation method of the driving jig. .

As shown, the main processing unit 30 includes a transfer device 31, an ultrasonic anti-static unit 41a, a plasma output unit 41b, a primer application unit 43, and a matte pigment application unit 45.

The transfer device 31 transfers the parts placed on the part holder 34h at a constant speed after the pretreatment is completed, and the casing 31e, the chain 33a, the sprocket 33b, the traveling jig 34, and rotation It has an induction machine (35).

First, the casing 31e is a structure made of a metal plate and provides a running slit 31a that has an inner space and is opened upward. The traveling slit 31a guides the circular motion of the traveling jig 34 as a path forming a closed curve. The traveling jig 34 rotates at a constant speed along the traveling slit 31a. The rotation of the travel jig 34 is performed by the chain 33a inside the casing 31e.

The chain 33a circulates while being installed horizontally under the running slit 31a and is supported by a plurality of sprockets 33b. A motor (not shown) is connected to one of the plurality of sprockets 33b to transmit the driving force to the chain 33a.

The traveling jig 34 circulates the traveling path together with the chain 33 while being fixed to the outer portion of the chain 33 at regular intervals through the connector 34a. The traveling jig 34 has a connector 34a, a vertical tube 34b, a support rod 34e, a friction disk 34g, and a component holder 34h.

The connector 34a is a piece of iron fixed to the side of the chain 33 and is spaced at a predetermined interval along the length direction of the chain. In addition, the vertical tube (34b) is a cylindrical member whose lower end is blocked and the upper part is open, and supports the support rod (34e) to be axially rotatable. The support rod 34e is a round bar-shaped member that has passed upward through the traveling slit 31a while being fitted in the receiving space 34c of the vertical tube 34b. In particular, the support rod (34e) can be axially rotated by an external force while being fitted to the vertical tube (34b). The component holder 34h is mounted on the upper end of the support rod 34e and supports the instrument panel component. It goes without saying that the shape of the part holder 34h varies according to the shape of the part.

In addition, the friction disk 34g is a disk-shaped member fixed to the support rod 34e, and may come into contact with the friction plate 35g of the rotary induction machine 35 while traveling. That is, as shown in FIG. 7, when the traveling jig 34 meets the rotation guide 35 while traveling in the direction of the arrow a, it rotates in the direction of the arrow b due to friction with the friction plate 35g of the rotation guide. Since the component holder 34h is mounted on the upper end of the support rod 34e, the component holder also rotates at the same time. Naturally, the travel jig 34 does not rotate when it does not meet the rotation induction machine 35.

The rotation guide 35 is for rotating the friction disk 34g of the traveling jig 34 passing in front of it, and includes a horizontal actuator 35a, a support plate 35e, and a friction plate 35g. The support plate 35e is a plate-shaped member having a predetermined thickness and can reciprocate in the direction of the arrow e and the opposite direction by the operation of the actuator 35a. Further, the friction plate 35g is a rubber plate fixed to the support plate 35e, and moves in the direction of the arrow e to contact the friction disk 34g. The friction disk 34g meets the friction plate 35g while moving in the direction of arrow a and rotates in the direction of arrow b.

This rotation induction machine 35, as shown in Fig. 6, is located in a part of the chain circulation path. That is, it is installed on a straight path from the ultrasonic anti-static agent 41a to the matte pigment application part 45. The reason is to rotate parts only during antistatic, plasma treatment, primer application, and matte pigment application. There is no need to rotate the part in other paths. Rather, it causes wear of parts when rotated.

The ultrasonic antistatic agent 41a is disposed close to the part conveying path, and applies ultrasonic waves to the parts loaded in the part holder 34h to remove static electricity inherent in the part. The ultrasonic static eliminator itself uses a general one.

The plasma output unit 41b is a device that activates a component interface by applying plasma energy to a component surface from which static electricity has been removed. The plasma output unit 41b is also located close to the component transfer path. A general plasma output unit 41b may also be used.

A primer application part 43 is located on the side of the plasma output part. The primer application part 43 sprays the primer supplied from the outside onto the surface of the component. The component rotates while being transferred while being seated on the component holder 34h, so that the primer can be evenly applied to the entire surface of the component. Three spray nozzles 43a for spraying the primer are arranged in parallel. Depending on the shape or size of the part, the position of each injection nozzle 43a can be independently adjusted.

The matte pigment application part 45 is to apply the matte pigment on the upper part of the primer layer and has three spray nozzles 45a. The matte pigment sprayed through the spray nozzle 45a is deposited on the primer layer. The parts that have passed through the matte pigment application section 45 continue to move along the traveling slit 31a to enter the unloading section 30B, are picked up by the operator, and transferred to the conveyor dryer 47.

Reference numeral 30A is a visual inspection section. The visual inspection section 30A is an area to check whether or not a component loaded in the component holder 34h is defective. Since there is no rotation induction machine 35 inside the visual inspection section 30A, the parts do not rotate, so visual inspection is easy.

The conveyor dryer 47 serves to dry the parts coated with the matte pigment at the same time as the transfer. For example, the parts are naturally dried in contact with air while being transported through the conveyor dryer 47. In some cases, drying can be induced more quickly by applying a drying blower to the conveyor dryer 47.

9 is a perspective view showing a modified example of the travel jig 34 shown in FIG. 7, and FIGS. 10A, 10B and 10C are plan cross-sectional views for explaining the operation of the travel jig of FIG. 9.

The same reference numerals as the above-described reference numerals denote the same members having the same function.

Referring to the drawings, it can be seen that the mainspring case 34j is added to the vertical tube 34b, and the mainspring 34m is mounted in the mainspring case 34j. The spring case (34j) is a hollow cylindrical portion and provides a receiving space (34c) and one space of the vertical tube.

In addition, a slit 34k is formed on one side of the spring case 34j. The slit 34k is a through-hole elongated in the vertical direction, and accommodates and fixes one end of the spring 34m.

The spring (34m) is an elastic member that has a certain width and extends in the longitudinal direction and is wound in a coil shape, and is accommodated in the spring case (34j), one end is fixed to the slit (34k), the other end is a support rod (34e) ) To the fitting groove (34f). The fitting groove 34f is a groove formed on the outer peripheral surface of the support rod 34e. Eventually, the support rod 34e and the mainspring case 34j are connected by the mainspring 34m.

The mainspring (34m) is normally maintained in a loosened state, but is wound and compressed when the traveling jig (34) passes in front of the rotation induction machine (35). In other words, as shown in Figs. 10A and 10B, when the friction disk 34g is rotated in the direction of arrow b by the friction plate 35g, it is wound and compressed.

The spring 34m is elastically restored as soon as the friction disk 34g is separated from the friction plate 35g and rotates the friction disk 34g at high speed in the direction of arrow g, as shown in FIG. 10C. That is, the moment the friction disk 34g leaves the rotary induction machine 35, the condensed elastic restoring force of the spring acts, and the part rotates at a high speed in the opposite direction. As the part rotates at high speed, excess primer or matte pigment attached to the part is scattered around the area under the influence of centrifugal force, and the primer layer or matte pigment layer of the optimum laminated thickness remains on the part.

Meanwhile, the assembly inspection device 50 repeatedly ascends and freely falls while supporting the assembly (12 in Fig. 13), which passes through the conveyor dryer 47 and assembled the dried parts, and falls off when the assembly freely falls. It plays a role of inhaling foreign substances and discharging them to the outside and inspecting the durability of the assembly.

11 is an exploded perspective view showing an assembly inspection device 50 in an instrument panel manufacturing apparatus according to an embodiment of the present invention, and FIG. 12 is a side cross-sectional view for explaining the internal structure of the assembly inspection apparatus. In addition, FIGS. 13A and 13B are views for explaining the operation of the assembly inspection apparatus of FIG. 11.

As shown, the assembly inspection device 50 includes a negative pressure chamber 51, a lifting tray 54, a lifting actuator 56, a cleaning air supply part 57, and an exhaust means.

The negative pressure chamber 51 takes the form of a box and provides a negative pressure space 51a opened upward through a through hole 51f. The negative pressure space 51a is maintained at a negative pressure by the exhaust means, and sucks dust or foreign matter generated when the assembly 12 freely falls. The air sucked into the bottom is discharged to the outside through the exhaust means.

The partition inclined plate 51b is fixed inside the negative pressure chamber 51. The partition inclined plate 51b is a partition plate that divides the inner space of the negative pressure chamber 51 up and down, and has a connection duct 52a at the center thereof. The connection duct 52a is a part of the exhaust means.

In addition, a plurality of lifting holes 54g are provided on the upper surface of the negative pressure chamber 51, and a pushing rod 54f is provided in each lifting hole 54g so as to be able to move up and down. The pushing rod 54f is a circular rod-shaped member extending vertically, and moves up and down while being supported by the lifting actuator 56 as shown in FIGS. 14A and 14B.

In particular, the pushing rod (54f) is pushed by the lifting actuator (56) and freely falls in the elevated state. That is, the lifting actuator 56 raises the pushing rod 54f to the top dead center and then immediately descends, causing the pushing rod 54f to fall freely. That is to say, the upper end of the piston rod 56c of the lifting actuator 56 descends at a faster speed than the pushing beam 54f. The reason for the free fall of the pushing rod 54f in this way is to verify the quality of the assembly by applying a drop impact to the assembly 12 set in the lifting tray 54. It is a kind of impact test.

In addition, guide rods 51g are fixed to the four corners of the upper surface of the negative pressure chamber 51. The guide rod 51g guides the lifting movement of the lifting tray 54 while being inserted into the vertical slider 54e of the lifting tray 54.

A male screw portion 51m is formed at the upper end of the guide rod 51g, and a rubber cap 51k is fitted to the male screw portion 51m. The diameter of the rubber cap 51k is larger than the diameter of the guide rod 51g. The rubber cap 51k serves as a stopper to prevent the lifting tray 54 from being separated from the guide rod 51g.

Reference numeral 55a is a sensor. The sensor 55a detects whether the assembly 12 is seated in the lifting tray 54 and transmits the detected content to the controller 55b. When the assembly 12 is not detected, the controller 55b does not operate the lifting actuator 56. On the contrary, when the assembly 12 is detected, the lifting actuator 56 is operated so that the lifting tray 54 moves up and down.

The lifting tray 54 is a plate-like member that accommodates and supports the assembly 12 and has an exhaust hole 54a in the center. The exhaust hole 54a is a through hole corresponding to the shape of the assembly 12. In other words, it is a hole that opens the light blocking body 19b downward. In addition, the exhaust hole 54a corresponds to the through hole 51f one-to-one. The exhaust hole 54a and the through hole 51f provide a vertical passage.

In addition, a plurality of support blocks 54b are fixed around the exhaust hole 54a. The support block 54b prevents the assembly 12 set in the lifting tray 54 from shaking from side to side. The support block 54b may be made of elastic silicone or rubber.

The vertical slider 54e takes a substantially cylindrical shape and accommodates the guide rod 51g. The inner circumferential surface of the vertical slider 54e performs a sliding motion while interviewing the outer circumferential surface of the guide rod 51g. A method of setting the lifting tray 54 on the top of the negative pressure chamber 51 is as follows. First, with the rubber cap (51k) separated from the guide rod (51g), align the lower hole of each vertical slider (54e) with the upper end of the guide rod (51g) and then place the lifting tray (54). The lifting tray 54 descends by the action of gravity, and the upper end of the guide rod 51g protrudes to the upper part of the vertical slider 54e. In this state, the rubber cap 51k is coupled to the guide rod 51g. In a state in which the lifting tray 54 is lowered, the rubber cap 51k and the vertical slider 54e are sufficiently separated by 5cm or more.

The exhaust means includes a connection duct 52a, an exhaust duct 52b, a filter 52c, and a vacuum pump (not shown). The connecting duct 52a is a cylindrical member fixed to the central portion of the partition inclined plate 51b, and is coupled to an end portion of the exhaust duct 52b. The end of the exhaust duct 52b is opened to the negative pressure space 51a through the connection duct 52a.

The exhaust duct 52b serves to guide the air inside the negative pressure space 51a to the outside and has a filter 52c. The filter 52c serves to filter foreign substances in the exhausted air. The vacuum pump is installed at the extended end of the exhaust duct 52b and draws air inside the negative pressure space 51a to the outside.

On the other hand, the cleaning air supply unit 57 serves to inject hot air toward the assembly 12 supported by the lifting tray 54 to remove foreign substances adhering to the assembly 12. For example, dust or plastic powder stuck in the gap of the assembly 12 is removed.

The cleaning air supply unit 57 includes a horizontal shaft 57a, a motor 57c, a shaft clamp 57d, a connecting plate 57k, a nozzle block 58, a built-in heater 58b, an air compressor 58m, A power source 58e is provided.

As shown in Fig. 14, the horizontal shaft 57a is a round bar having teeth formed on its outer circumferential surface, and is supported by a bearing 57b so as to be axially rotated. The horizontal shaft 57a is connected to the motor 57c and receives rotational force from the motor 57c and performs rotational motion in both directions. The maximum rotation angle of the horizontal shaft 57a is around 90 degrees. In other words, it is possible to rotate 45 degrees in a clockwise direction and 45 degrees in a counterclockwise direction based on the vertical line Z.

The shaft clamp 57d is a block-shaped member through which the horizontal shaft 57a is passed, and has a shaft receiving groove 57e for accommodating the horizontal shaft 57a. The shaft receiving groove (57e) is opened to the bottom and is closed by a fixing bolt (57g) and a nut (57h) to stably fix the received horizontal shaft (57a).

The connecting plate 57k is a belt-shaped member having a predetermined width and supports the nozzle block 58 with both ends coupled to the shaft clamp 57d. The nozzle block 58 is a rectangular block fixed to the connection plate 57k and has a built-in heater 58b. The built-in heater 58b is connected to the power source 58e through a power line 58f. It goes without saying that the built-in heater 58b is heated by applying power from the power source 58e to the built-in heater 58b.

In particular, an air passage (not shown) is provided inside the nozzle block 58. The air passage is connected to the air compressor 58m through an air supply hose 58n. In addition, a plurality of upward nozzles 58a are disposed above the nozzle block 58. The upward nozzle 58a communicates with the air passage.

Accordingly, the compressed air output from the air compressor 58m is pressed into the nozzle block 58 through the supply hose 58n, and then blown out through the upward nozzle 58a in the direction of arrow s in FIG. 14A. It goes without saying that the air pressed into the nozzle block 58 is heated by the built-in heater 58b. Eventually, hot air is ejected through the upward nozzle 58a. The ejected hot air is transmitted to the assembly 12 to remove foreign substances attached to the assembly.

While this process is in progress, the internal air of the negative pressure space (51a) is discharged downward through the connection duct (52a), and the lifting tray (54) repeats the ascent and free fall.

As described above, the present invention has been described in detail through specific embodiments, but the present invention is not limited to the above embodiments, and various modifications are possible by those of ordinary skill within the scope of the technical idea of the present invention.

11: instrument panel 12: assembly 19: parts
19a: base panel 19b: shading body 19c: transparent window
21: loading parts transfer unit 21a: conveyor 21b: transfer tray
25: pretreatment unit 25a: chamber 25b: air pressure pump
25c: air cleaning nozzle 25d: filter 25e: heater
25g: exhaust fan 30: main treatment unit 30A: visual inspection section
30B: Unloading section 31: Transfer device 31a: Travel slit
31e: casing 33a: chain 33b: sprocket
34: running jig 34a: connector 34b: vertical tube
34c: receiving space 34e: support rod 34f: fitting groove
34g: Friction disc 34h: Parts holder 34j: Manual winding case
34k: slit 34m: spring 35: rotary induction machine
35a: actuator 35e: support plate 35g: friction plate
41a: ultrasonic eliminator 41b: plasma output unit 43: primer application unit
43a: injection nozzle 45: matte pigment application portion 45a: injection nozzle
47: conveyor dryer 50: assembly inspection device 51: negative pressure chamber
51a: negative pressure space 51b: compartment slope 51f: through hole
51g: Guide rod 51k: Rubber cap 51m: Male thread
52a: connection duct 52b: exhaust duct 52c: filter
54: lifting tray 54a: exhaust hole 54b: support block
54e: vertical slider 54f: pushing rod 54g: lifting hole
55a: sensor 55b: controller 56: lifting actuator
56c: piston rod 57: cleaning air supply part 57a: horizontal shaft
57b: bearing 57c: motor 57d: shaft clamp
57e: shaft receiving groove 57g: fixing bolt 57h: nut
57k: connecting plate 58: nozzle block 58a: upward nozzle
58b: built-in heater 58e: power 58f: power line
58m: Air compressor 58n: Supply hose

Claims (4)

It is to remove foreign substances from the assembly by repeatedly raising and free-falling the instrument panel assembly and by applying hot air to the assembly,
A sound pressure chamber that takes the form of a box and has a sound pressure space open to the top through a through hole,
An elevating tray installed at an upper portion of the negative pressure chamber so as to be elevating, having an exhaust hole corresponding to the through hole, and supporting an assembly on the exhaust hole;
A lifting actuator that freely falls after lifting the lifting tray,
A cleaning air supply unit installed in the negative pressure chamber and spraying hot air upwards through the through hole and the exhaust hole to apply air pressure to the instrument panel assembly supported by the lifting tray;
Comprising an exhaust means for discharging foreign matters falling into the negative pressure chamber after being separated from the assembly by the free fall impact of the instrument panel assembly to the outside of the negative pressure chamber,
Vehicle instrument panel manufacturing device. The method of claim 1,
A plurality of elevating holes are further formed around the through hole,
In the lifting hole, a pushing rod that takes the form of a vertically extended round bar and a lower end is supported by the lifting actuator, and a pushing rod that repeats ascent and free fall when the lifting actuator is operated is mounted,
The lifting tray takes the form of a square case open to the top, is supported by a pushing rod, and has a plurality of support blocks to block lateral movement of the instrument panel assembly around the exhaust hole, and vertically at four corners. Have a slider,
At the upper part of the negative pressure chamber, a guide rod is provided that penetrates upward through the vertical slider to prevent lateral shaking during the lifting movement of the lifting tray,
At the upper end of the guide rod, a rubber cap that prevents the vertical slider from falling out of the guide rod is detachably coupled,
Vehicle instrument panel manufacturing device. The method of claim 1,
The cleaning air supply unit;
A horizontal shaft supported horizontally inside the negative pressure chamber and capable of axial rotation in both directions;
A motor connected to the horizontal shaft and rotating the horizontal shaft in both directions,
A shaft clamp coupled to both ends of the horizontal shaft to provide support,
A nozzle block fixed to the shaft clamp and rotating in both directions by using the horizontal shaft as a rotational center axis when the motor is driven, and having a plurality of upward nozzles on an upper side thereof;
An air compressor that is connected to the nozzle block through a supply hose and pressurizes air into the nozzle block so that air that has passed through the nozzle block is ejected toward the instrument panel assembly through an upward nozzle;
It is built into the nozzle block and includes a built-in heater that heats the air passing through the nozzle block by heating by power applied from the outside,
Vehicle instrument panel manufacturing device. The method of claim 1,
In the interior of the negative pressure chamber, a partition inclined plate is installed to partition the inner space of the negative pressure chamber up and down,
The exhaust means;
A connection duct that is mounted on the partition slope plate and receives air from the upper space of the partition slope plate and guides it to the bottom;
An exhaust duct that extends to the outside of the negative pressure chamber while one end is fitted into the connection duct, and sucks air from the top of the partition slope plate and guides it to the outside by the action of an external vacuum pump;
And a filter mounted on the exhaust duct and filtering air passing through the exhaust duct,
Vehicle instrument panel manufacturing device.

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