JP2009189897A - Grease applying device - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a grease applying device capable of preventing the sticking of grease on a part except a part to be coated and properly applying grease even if the application work of the grease is repeated many times. <P>SOLUTION: The grease applying device 1 is provided with a first coating nozzle (coating nozzle) 10 having a first grease discharge port (grease discharge port) 16a discharging the grease to the outer peripheral surface and inserted into a center hole (hole) Z2 formed on a workpiece (component to be coated) Z and the first coating nozzle 10 includes a first grease reserving part (grease reserving part) 17a which is positioned in a gravitational lower side of the first grease discharge port 16a and recessed from the outer peripheral surface on the outer peripheral surface. <P>COPYRIGHT: (C)2009,JPO&INPIT

Description

  The present invention relates to a grease applying apparatus that applies grease to the inner peripheral surface of a hole formed in a part to be coated.

  Conventionally, in order to apply grease to the inner circumferential surface of a hole formed in a part to be coated such as a gear bracket, a cylindrical coating nozzle that can be inserted into the hole is provided, and formed on the outer circumferential surface of the coating nozzle. There is known a grease application device that discharges grease from a grease discharge port (see, for example, Patent Document 1).

  In such a grease coating apparatus, a coating nozzle is inserted into a hole of a part to be coated formed in advance, the grease discharge port is made to face the inner peripheral surface of the hole, and then the grease is discharged from the grease discharge port.

Thereafter, the component to be coated and the coating nozzle are moved relative to each other in the axial direction to retract the coating nozzle and apply grease to the inner peripheral surface of the hole.
JP-A-9-239305

  By the way, in the above-described grease application device, while the grease application operation is repeated many times, the grease slightly remaining around the grease discharge port gradually drops due to its own weight and adheres to the outer peripheral surface of the application nozzle. There was a case.

  For this reason, there has been a problem that the grease adhered to the outer peripheral surface of the coating nozzle adheres to other than the inner peripheral surface of the hole of the part to be coated.

  Furthermore, the grease adhering to the outer peripheral surface of the application nozzle spreads along the outer peripheral surface, and the grease discharge port may be blocked, so that there is a possibility that the grease cannot be applied sufficiently.

  Therefore, an object of the present invention is to provide a grease application device that can appropriately apply grease while preventing adhesion of grease to other than the application site even if the grease application operation is repeated many times.

  In order to solve the above-mentioned problem, the present invention is a grease application device having a grease discharge port for discharging grease on an outer peripheral surface and provided with an application nozzle inserted into a hole formed in a part to be applied, The application nozzle is characterized in that a grease reservoir portion is formed on the outer peripheral surface, which is located below the gravitational force of the grease discharge port and is recessed from the outer peripheral surface.

  Further, the grease reservoir is characterized in that it extends along the axial direction of the application nozzle.

  Further, the application nozzle has a plurality of grease discharge ports formed in an arbitrary range in the circumferential direction of the outer peripheral surface along the circumferential direction, and the plurality of grease discharge ports are located at a central portion in the circumferential direction. It is characterized by having the largest opening area.

  Further, the application nozzle has a plurality of grease discharge ports formed along the axial direction in an arbitrary range of the outer peripheral surface in the axial direction, and the plurality of grease discharge ports are located in a central portion in the axial direction. It is characterized by having the largest opening area.

  Further, an arbitrary range in the circumferential direction of the outer peripheral surface of the coating nozzle or an arbitrary range in the axial direction of the outer peripheral surface is opposed to a portion where the load acts most on the inner peripheral surface of the hole of the component to be coated. It is characterized by that.

  According to the present invention, by repeating the grease application operation many times, even if the grease remaining around the grease discharge port hangs down by its own weight, it enters the grease reservoir located under the gravity of the grease discharge port. It will be.

  Here, since the grease reservoir is recessed from the outer peripheral surface of the application nozzle, the grease that has entered the grease reservoir does not spread along the outer peripheral surface of the application nozzle.

  Therefore, even if an application nozzle is inserted into the hole of the part to be coated, the grease in the grease reservoir does not adhere to the part to be coated, and it is possible to prevent the grease from adhering to other than the application location.

  Further, since the dripping grease does not spread along the outer peripheral surface of the application nozzle, the grease can be properly applied even if the application operation is repeated without blocking the grease discharge port.

  In addition, since the grease reservoir extends along the axial direction of the application nozzle, it is possible to efficiently recover the grease drooped by its own weight.

  Also, a plurality of grease discharge ports are formed in an arbitrary range in the circumferential direction of the outer peripheral surface of the application nozzle, and among these plurality of grease discharge ports, the one located at the center in the circumferential direction has the largest opening area. Therefore, the coating amount can be adjusted for each portion on the inner peripheral surface of one hole. Furthermore, the largest amount of grease can be applied to the central portion in the circumferential direction of the inner peripheral surface of the hole.

  In addition, a plurality of grease discharge ports are formed in an arbitrary range in the axial direction of the outer peripheral surface of the application nozzle, and among these plurality of grease discharge ports, the one located in the central portion in the axial direction has the largest opening area. Therefore, on the inner peripheral surface of one hole, the application amount can be adjusted for each portion, and furthermore, the largest amount of grease can be applied to the axially central portion of the inner peripheral surface of the hole. .

  The arbitrary range in the circumferential direction of the outer peripheral surface of the coating nozzle or the arbitrary range in the axial direction of the outer peripheral surface is opposed to the portion where the load is most applied on the inner peripheral surface of the hole of the coated part. An appropriate amount of grease can be applied to a portion of the application part where the load is most applied.

  BEST MODE FOR CARRYING OUT THE INVENTION The best embodiment of a grease applying apparatus according to the present invention will be described based on the drawings.

  1 shown in FIG. 1 is a grease coating apparatus according to the present invention. The grease application apparatus 1 includes a work support base 2 having support legs 2a, a first application nozzle 10 and a pair of second application nozzles 20 and 20 provided on the work support base 2, and a pressure-feed pump that pumps grease. 3 and a hose 4 connected to the pressure pump 3.

  An intermediate portion of the hose 4 is provided with a metering cylinder 5 that is controlled by the control device S and adjusts so that a certain amount of grease flows. Further, a branch pipe 4a connected to the hose 4 is provided on the downstream side of the metering cylinder 5, and the branch pipe 4a has a plurality of branch hoses 4b connected to the application nozzles 10, 20, 20,. It is connected.

  Thereby, the pressure feed pump 3 and each application nozzle 10,20,20 will be connected.

  On the other hand, the grease is contained in the grease storage canister G, and is sucked out from the suction pipe 3c connected to the suction port 3a of the pressure pump 3 and discharged from the discharge port 3b. A hose 4 is connected to the discharge port 3b.

  The pressure pump 3 is ON / OFF controlled by a start switch 6 provided on the work support 2.

  The workpiece support 2 is a portion on which a workpiece (part to be coated) Z conveyed by a workpiece conveyance mechanism (not shown) is placed, and a pair of workpiece detection sensors 2c and 2c are provided on both sides.

  The work support 2 is formed with a plurality of nozzle through holes 2b,... Through which a mounting pipe 11 described later of the first coating nozzle 10 or a mounting pipe 21 described below of the second coating nozzle 20 passes.

  As shown in FIG. 2, the first application nozzle 10 has an attachment tube 11 that penetrates the nozzle through hole 2 b located at the center of the work support 2 and an application tube 12 that is connected to the attachment tube 11. is doing.

  The mounting tube 11 is a hollow tube having both ends open, has an outer diameter that can be fitted into the nozzle through hole 2b, and has a large diameter portion 11a having an outer diameter larger than the inner diameter of the nozzle through hole 2b at one end. Has been.

  The attachment tube 11 has a length that can protrude from the work support 2 when fitted into the nozzle through-hole 2b. A connecting screw is provided on the outer peripheral surface of the portion protruding from the work support 2. A groove 11b is formed.

  Furthermore, a thread groove 11c is formed on the inner peripheral surface of the large diameter portion 11a, and a connection portion (not shown) provided at the distal end portion of the branch hose 4b is screwed together.

  The mounting tube 11 is fitted into the nozzle through hole 2b from below the workpiece support base 2 and the nut 13 is screwed into the connection screw groove 11b protruding from the workpiece support base 2, whereby the workpiece support base 2 is attached. It is attached.

  At this time, the outer diameter of the nut 13 is sufficiently larger than the inner diameter of the nozzle through hole 2b, and the workpiece support 2 is sandwiched between the nut 13 and the large diameter portion 11a.

  The coating tube 12 is formed of a hollow tube having one end open, and the closed end portion 12a has a tapered shape.

  Further, the inner diameter of the open base end portion 12b is formed such that the mounting tube 11 can be inserted, and a screw groove 12c that is screwed into the connection screw groove 11b of the mounting tube 11 is formed on the inner peripheral surface thereof. ing.

  Reference numeral 14 denotes a rubber packing, which is interposed between the tip of the mounting tube 11 inserted into the coating tube 12 and the coating tube 12, and is formed with a grease passage 15 formed from the mounting tube 11 to the coating tube 12. This prevents the grease that flows into the tank from leaking.

  Furthermore, the first to third grease discharge ports 16a, 16b, 16c (see FIG. 3A) and the first to third grease reservoirs 17a, 17b, 17c (see FIG. 3 (b)).

  The first to third grease discharge ports 16a, 16b, and 16c are sequentially formed along the circumferential direction between arbitrary ranges in the circumferential direction of the outer peripheral surface of the coating tube 12 (indicated by X in FIG. 3A). Has been.

  The first to third grease discharge ports 16 a, 16 b, and 16 c are formed at equal intervals in the circumferential direction of the coating tube 12 and communicate with the grease passage 15.

  Further, here, the inner diameter K2 of the second grease discharge port 16b is formed to be larger than the inner diameters K1, K3 of the first and third grease discharge ports 16a, 16c. That is, among the first to third grease discharge ports 16a, 16b, and 16c, the second grease discharge port 16b located at the center in the circumferential direction has the largest opening area.

  The first to third grease reservoirs 17a to 17c are formed so as to be recessed from the outer peripheral surface of the application tube 12, respectively. As shown in FIG. 3C, the first grease reservoir 17a is the first grease reservoir 17a. The grease discharge port 16a is positioned below the gravity and extends along the axial direction of the application tube 12, and the second grease reservoir 17b is positioned below the gravity of the second grease discharge port 16b and the axis of the application tube 12 The third grease reservoir 17c is positioned below the gravity of the third grease discharge port 16c and extends along the axial direction of the coating tube 12.

  Further, the width W1 of the first grease reservoir 17a is larger than the inner diameter K1 of the first grease discharge port 16a, and the width W2 of the second grease reservoir 17b is larger than the inner diameter K2 of the second grease discharge port 16b. The width W3 of the third grease reservoir 17c is larger than the inner diameter K3 of the third grease discharge port 16c.

  Further, here, an upper first grease discharge port 18a is formed on the distal end portion 12a side of the application tube 12 with respect to the first grease discharge port 16a, and on the distal end portion 12a side of the application tube 12 with respect to the second grease discharge port 16b. An upper second grease discharge port 18b is formed, and an upper third grease discharge port (not shown) is formed closer to the distal end portion 12a side of the coating tube 12 than the third grease discharge port 16c.

  The upper first grease discharge port 18 a, the upper second grease discharge port 18 b, and the upper third grease discharge port (not shown) are arranged along the circumferential direction of the coating tube 12, and communicate with the grease passage 15. Yes.

  The inner diameter of the upper first grease discharge port 18a is the same as the inner diameter K1 of the first grease discharge port 16a, and the inner diameter of the upper second grease discharge port 18b is the same as the inner diameter K2 of the second grease discharge port 16b. The inner diameter of the upper third grease discharge port (not shown) is the same as the inner diameter K3 of the third grease discharge port 16c.

  As shown in FIG. 4, the second application nozzle 20 includes an attachment tube 21 that passes through the nozzle through hole 2 b located in the vicinity of the end of the work support 2 and an application tube 22 connected to the attachment tube 21. Have.

  The attachment tube 21 is formed of a hollow tube having both ends open, has an outer diameter that can be fitted into the nozzle through hole 2b, and has a large diameter portion 21a having an outer diameter larger than the inner diameter of the nozzle through hole 2b at one end portion. Has been.

  Further, the mounting tube 21 has a length that can protrude from the work support 2 when fitted into the nozzle through hole 2b, and a connection screw is provided on the outer peripheral surface of the portion protruding from the work support 2 A groove 21b is formed.

  Furthermore, a thread groove 21c is formed on the inner peripheral surface of the large diameter portion 21a, and a connection portion (not shown) provided at the tip of the branch hose 4b is screwed together.

  The mounting tube 21 is inserted into the nozzle through hole 2b from below the workpiece support base 2, and the nut 23 is screwed into the connection screw groove 21b protruding from the upper surface of the workpiece support base 2, whereby the workpiece support base. 2 is attached.

  At this time, the outer diameter of the nut 23 is sufficiently larger than the inner diameter of the nozzle through hole 2b, and the workpiece support 2 is sandwiched between the nut 23 and the large diameter portion 21a.

  The coating tube 22 is a hollow tube with one end open, and the closed tip 22a has a tapered shape.

  Further, the inner diameter of the opened base end portion 22b is formed such that the mounting tube 21 can be inserted, and a screw groove 22c that is screwed into the connection screw groove 21b of the mounting tube 21 is formed on the inner peripheral surface thereof. ing.

  Reference numeral 24 denotes a rubber packing, which is interposed between the tip of the attachment tube 21 inserted into the application tube 22 and the application tube 22, and is formed with a grease passage 25 formed from the attachment tube 21 to the inside of the application tube 22. This prevents the grease that flows into the tank from leaking.

  Further, on the outer peripheral surface of the coating tube 22, there are upper first to upper fourth grease discharge ports 26a to 16d (see FIG. 5A) and intermediate first to intermediate fourth grease discharge ports 27a to 27d (see FIG. 5). 5 (b)), lower first to lower fourth grease discharge ports 28a to 28d (see FIG. 5 (c)), and first to fourth grease reservoirs 29a to 29d (FIG. 5 (d)). Reference) is formed.

  The upper first to upper fourth grease discharge ports 26a to 26d are formed at equal intervals over the entire circumference of the coating tube 22, and are arranged in order along the circumferential direction. These upper first to upper fourth grease discharge ports 26 a to 26 d communicate with the grease passage 25, respectively.

  The intermediate first to fourth intermediate grease discharge ports 27a to 27d are formed at equal intervals over the entire circumference of the coating tube 22, and are arranged in order along the circumferential direction. The intermediate first to upper fourth grease discharge ports 27a to 27d communicate with the grease passage 25, respectively.

  Furthermore, the lower first to lower fourth grease discharge ports 28 a to 28 d are formed at equal intervals over the entire circumference of the coating tube 22 and are arranged in order along the circumferential direction. The lower first to lower fourth grease discharge ports 28a to 28d communicate with the grease passage 25, respectively.

  The upper first grease discharge port 26a, the intermediate first grease discharge port 27a, and the lower first grease discharge port 28a are in an arbitrary range (indicated by Y in FIG. 4) in the axial direction of the coating tube 22. They are formed in order from the tip 22a side along the axial direction.

  Similarly, the upper second to upper fourth grease discharge ports 26b to 26d, the intermediate second to intermediate fourth grease discharge ports 27b to 27d, and the lower second to lower fourth grease discharge ports 28b to 28d, respectively. It forms in order from the front-end | tip part 22a side along the axial direction of the coating pipe | tube 22. As shown in FIG.

  Further, here, the inner diameter K5 of the intermediate first grease discharge port 27a is larger than the inner diameter K4 of the upper first grease discharge port 26a and the inner diameter K6 of the lower first grease discharge port 28a. Yes.

  That is, among the upper first grease discharge port 26a, the intermediate first grease discharge port 27a, and the lower first grease discharge port 28a, the intermediate first grease discharge port 27a located at the center in the axial direction has the largest opening area. is doing.

  The same applies to the upper second to upper fourth grease discharge ports 26b to 26d, the intermediate second to intermediate fourth grease discharge ports 27b to 27d, and the lower second to lower fourth grease discharge ports 28b to 28d. The inner diameters of the intermediate second to intermediate fourth grease discharge ports 27b to 27d are the largest.

  The first to fourth grease reservoirs 29a to 29d are formed so as to be recessed from the outer peripheral surface of the application tube 12, and the first grease reservoir 29a is gravity of the lower first grease discharge port 28a. The second grease reservoir 29b is positioned below the gravity direction of the lower second grease discharge port 28b and extends along the axial direction of the application tube 12. The third grease reservoir 29c is positioned below the gravity of the lower third grease discharge port 28c and extends along the axial direction of the application tube 12. The fourth grease reservoir 29d It is located below the gravity of the fourth grease discharge port 28d and extends along the axial direction of the coating tube 12.

  Further, the width W4 of the first grease reservoir 29a is larger than the inner diameter K5 of the intermediate first grease discharge port 27a. Furthermore, the widths of the other grease reservoirs 29b to 29d are also larger than the intermediate second to intermediate fourth grease discharge ports 27b to 27d, respectively.

  Next, the operation of the grease applying apparatus 1 according to the present invention will be described.

  In order to apply grease to a predetermined portion of the workpiece Z, which is a part to be applied, by the grease applying apparatus 1, first, the workpiece Z is set at a predetermined position on the workpiece support 2 by a workpiece conveyance mechanism (not shown). At this time, the workpiece Z is held by a workpiece holding bracket (not shown) provided with the workpiece support 2.

  Whether or not the workpiece Z is set at a predetermined position is determined by whether or not the workpiece Z is detected by the workpiece detection sensors 2c and 2c provided on the workpiece support base 2.

  Here, the first coating nozzle 10 and the second coating nozzles 20 and 20 are respectively attached to the workpiece support 2 in advance, and the coating tubes 11, 21 and 21 protrude from the workpiece support 2.

  When the workpiece Z is set at a predetermined position, the application tube 11 is inserted into a hole (hereinafter referred to as a central hole) Z2 formed in the central portion among the plurality of holes Z1 to Z3 formed in the workpiece Z. The coating tubes 21 and 21 are inserted into holes (hereinafter referred to as end holes) Z1 and Z3 formed at both ends of the work Z (see FIG. 6).

  At this time, the first to third grease discharge ports 16a to 16c and the upper first to upper third grease discharge ports 18a and 18b (not shown) face the inner peripheral surface of the center hole Z2, and end portions Upper first to upper fourth grease discharge ports 26a to 16d, intermediate first to intermediate fourth grease discharge ports 27a to 27d, lower first to lower fourth grease on the inner peripheral surfaces of the holes Z1 and Z3. The discharge ports 28a to 28d face each other.

  Further, the first to third grease reservoirs 17a to 17c are inserted into the central hole Z2 at the upper end portions thereof, and face the inner peripheral surface of the central hole Z2.

  Furthermore, the upper ends of the first to fourth grease reservoirs 29a to 29d are inserted into the end holes Z1 and Z3, respectively, and face the inner peripheral surfaces of the end holes Z1 and Z3.

  In this state, when the start switch 6 is turned on to drive the pressure pump 3, the grease in the grease storage canister G is sucked out from the suction port 3a of the pressure pump 3 through the suction pipe 3c, and the discharge port 3b. Discharged from.

  And the grease which flowed in the hose 4 connected to the discharge port 3b is adjusted so that the flow rate becomes constant by the fixed quantity cylinder 5, and then the first application nozzle is passed through each of the plurality of branch hoses 4b,. 10 or the second application nozzle 20, 20.

  The grease that has flowed into the first application nozzle 10 flows from the attachment pipe 11 into the grease passage 15 of the application pipe 12, and the first to third grease discharge ports 16 a to 16 c that communicate with the grease passage 15 and the upper first to upper sides. It discharges | emits from each of the 3rd grease discharge outlet 18a, 18b (not shown).

  At this time, the first to third grease discharge ports 16a to 16c and the upper first to upper third grease discharge ports 18a and 18b (not shown) have an inner peripheral surface of the central hole Z2 formed in the workpiece Z. Are opposed to each other, the discharged grease adheres to the inner peripheral surface of the central hole Z2.

  Here, the first to third grease discharge ports 16 a to 16 c and the upper first to upper third grease discharge ports 18 a and 18 b (not shown) are arbitrary ranges X in the circumferential direction of the outer peripheral surface of the coating tube 12. The grease is formed in an arbitrary range in the circumferential direction (X in FIG. 8) that opposes an arbitrary range X in the circumferential direction of the outer peripheral surface of the coating tube 12 in the inner peripheral surface of the central hole Z2. It is attached only to (indicated by ').

  Further, here, among the first to third grease discharge ports 16a to 16c and the upper first to upper third grease discharge ports 18a and 18b (not shown) formed in order along the circumferential direction, the circumferential direction The second grease discharge port 16b and the upper second grease discharge port 18b located at the center have the largest opening area.

  Therefore, among the inner peripheral surface of the central hole Z2, the largest amount of grease adheres to the circumferential central portion (indicated by X ″ in FIG. 8) in an arbitrary range X ′ in the circumferential direction, which is a grease application site. It will be.

  In this way, on the inner peripheral surface of one central hole Z2 formed in the workpiece Z, it is possible to adjust the amount of grease applied for each part, and the most amount of grease is applied to the central portion of the application site. can do.

  On the other hand, the grease that has flowed into the second application nozzle 20 flows from the attachment pipe 21 into the grease passage 25 of the application pipe 22, and the upper first to upper fourth grease discharge ports 26 a to 26 d communicating with the grease passage 25, the middle The first to intermediate fourth grease discharge ports 27a to 27d and the lower first to lower fourth grease discharge ports 28a to 28d are respectively discharged.

  At this time, the upper first to upper fourth grease discharge ports 26a to 26d, the intermediate first to intermediate fourth grease discharge ports 27a to 27d, and the lower first to lower fourth grease discharge ports 28a to 28d Since the inner peripheral surface of the end hole Z1 or the end hole Z3 formed in this is opposed, the discharged grease adheres to the inner peripheral surface of the end hole Z1 or the end hole Z3.

  Here, the upper first to upper fourth grease discharge ports 26a to 26d, the intermediate first to intermediate fourth grease discharge ports 27a to 27d, and the lower first to lower fourth grease formed in order along the axial direction. Among the discharge ports 28a to 28d, the intermediate first to intermediate fourth grease discharge ports 27a to 27d located at the axially central portion have the largest opening area.

  Therefore, the largest amount of grease adheres to the axially central portion (indicated by Y ′ in FIG. 6) of the inner peripheral surfaces of the end hole Z1 and the end hole Z3.

  In this way, on the inner peripheral surface of one end hole Z1 or end hole Z3 formed in the workpiece Z, it is possible to adjust the amount of grease applied for each part and at the center of the application site. The largest amount of grease can be applied.

  Further, here, the work Z is a case of an air conditioner attached to the vehicle, and the end hole Z1 and the end hole Z3 formed in the work Z hold a door (not shown) attached to the case in a rotatable manner. The central hole Z2 is a portion where an actuator that rotates a door (not shown) contacts and slides.

  Therefore, when a door (not shown) and an actuator (not shown) are attached to the workpiece Z, which is a case, the largest load acts on a part of the inner peripheral surfaces of the end holes Z1, Z3 and the central hole Z2 due to the dead weight of the door and the actuator. It will be.

  Here, the site where the largest load acts on the inner peripheral surface of the central hole Z2 is the circumferential direction facing the arbitrary range X in the circumferential direction of the outer peripheral surface of the coating tube 12 among the inner peripheral surfaces of the central hole Z2. The region where the largest load is applied to the inner peripheral surfaces of the end hole Z1 and the end hole Z3 within the arbitrary range X ′ is the center in the axial direction of the inner peripheral surfaces of the end hole Z1 and the end hole Z3. Part Y ′.

  On the other hand, in the arbitrary range X ′ of the inner peripheral surface of the central hole Z2, the first to third grease discharge ports 16a to 16c and the upper first to upper third grease discharge ports 18a and 18b of the first application nozzle 10 are provided. , (Not shown) are opposed to each other, and the intermediate first to intermediate fourth grease discharge ports 27a of the second application nozzle 20 are provided in the axially central portion Y ′ of the inner peripheral surfaces of the end hole Z1 and the end hole Z3. -27d are facing each other.

  As a result, it is possible to apply a large amount of grease to the portion of the center hole Z2 and the end holes Z1 and Z3 formed in the workpiece Z where the load is most applied.

  Then, after a predetermined amount of grease is discharged from each of the grease discharge ports 16a to 28d, the grease adheres to the inner peripheral surface of the center hole Z2 and the end holes Z1 and Z3 of the work Z, and then by a work transport mechanism (not shown), The workpiece Z on the workpiece support 2 and the coating nozzles 10, 20, and 20 are relatively moved in the axial direction to retract the coating nozzles 10, 20, and 20 from the workpiece Z.

  Thereby, grease is automatically apply | coated to the internal peripheral surface of the center hole Z2 of the workpiece | work Z and end part hole Z1, Z3.

  And while repeating the grease application | coating operation | work with respect to many workpiece | work Z, the grease which remained slightly around each grease discharge port 16a-28c gradually becomes the application | coating nozzle 10,20,20 by the effect | action of gravity. It flows under the gravity along the axial direction.

  Here, since the first grease reservoir portion 17a is formed under the gravity of the first grease discharge port 16a, it remains around the first grease discharge port 16a and the upper first grease discharge port 18a. The dripping grease will enter the first grease reservoir 17a.

  Moreover, since this 1st grease reservoir part 17a is dented rather than the outer peripheral surface of the application pipe | tube 12, the grease which entered into the 1st grease reservoir part 17a is along the outer peripheral surface of the application pipe | tube 12 of the application nozzle 10. FIG. It does not spread.

  Therefore, even if the application nozzle 10 is inserted into the central hole Z2 of a large number of workpieces Z, the grease in the first grease reservoir 17a does not adhere to the inner peripheral surface of the central hole Z2, and the grease adheres to areas other than the application location. It is possible to prevent this.

  Further, since the dripping grease does not spread along the outer peripheral surface of the coating tube 12, the grease can be properly coated even if the coating operation is repeated without blocking the first grease discharge port 16a.

  Further, the first grease reservoir 17 a extends along the axial direction of the application tube 12 of the application nozzle 10. Therefore, it is possible to efficiently recover the grease that hangs down by its own weight and flows along the axial direction of the coating tube 12.

  In each of the grease reservoirs 17b to 17c and 29a to 29d other than the first grease reservoir 17a, the grease that has flowed due to its own weight is efficiently recovered in the same manner as the first grease reservoir 17a. Even if the coating operation is repeated many times, it is possible to prevent grease from adhering to other than the application site and to properly apply the grease.

  As mentioned above, although embodiment concerning this invention has been explained in full detail with drawing, a concrete structure is not restricted to the above-mentioned embodiment. Design changes and the like within the scope not departing from the gist of the present invention are included in the present invention.

  For example, in the above-described embodiment, each of the grease reservoirs 17a to 17c and 29a to 29d has an arcuate concave surface, but this is not a limitation. The groove-shaped grease reservoir 31 (see FIG. 9A) cut into an acute angle or the trapezoidal grease reservoir 32 (see FIG. 9B) may be used.

  Furthermore, as shown in FIG. 9C, a grease reservoir 33 in which a part of the outer peripheral surface of the coating tube 12 is made flat may be used.

  And even if it is the grease reservoir part 31-33 of any shape, while being located under the gravity of the grease discharge port, and being dented from the outer peripheral surface of the coating pipe 12, it drooped with the dead weight from the grease discharge port. Grease enters and it is possible to prevent the grease from adhering to places other than the application site.

  Moreover, although the above-mentioned embodiment has demonstrated the case where grease is apply | coated to the inner peripheral surface of center hole Z2 formed in the workpiece | work Z which is a case of an air conditioner, and edge part hole Z1, Z3, Z can be any part such as a gear bracket.

It is explanatory drawing which shows typically the structure of the grease coating device which concerns on this invention. It is a longitudinal cross-sectional view which expands and shows a 1st application nozzle. (A) is AA sectional drawing in FIG. 2, (b) is BB sectional drawing in FIG. 2, (c) is the side view to which the C section in FIG. 2 was expanded. It is a longitudinal cross-sectional view which expands and shows a 2nd application | coating nozzle. (A) is DD sectional drawing in FIG. 4, (b) is EE sectional drawing in FIG. 4, (c) is FF sectional drawing in FIG. 4, (d) is a figure. 4 is a GG cross section in FIG. It is a longitudinal cross-sectional view which shows the state which mounted | wore the workpiece | work to the grease coating device which concerns on this invention. It is an enlarged view which shows the H section in FIG. It is II sectional drawing in FIG. (A)-(c) is principal part sectional drawing which shows the modification of a grease reservoir part.

Explanation of symbols

1 Grease application device 10 First application nozzle (application nozzle)
16a First grease outlet (grease outlet)
17a First grease reservoir (grease reservoir)
Z workpiece (parts to be coated)
Z2 Central hole (hole)

Claims (5)

A grease coating apparatus having a grease discharge port for discharging grease on an outer peripheral surface and having a coating nozzle inserted into a hole formed in a component to be coated,
The grease application apparatus, wherein the application nozzle is formed with a grease reservoir that is located below the gravitational force of the grease discharge port and is recessed from the outer periphery.   The grease application device according to claim 1, wherein the grease reservoir is extended along an axial direction of the application nozzle. The application nozzle has a plurality of grease discharge ports formed in an arbitrary range in the circumferential direction of the outer peripheral surface along the circumferential direction,
The grease application apparatus according to claim 1 or 2, wherein the plurality of grease discharge ports have a largest opening area located at a central portion in the circumferential direction. The application nozzle has a plurality of grease discharge ports formed in an axial range of the outer peripheral surface along the axial direction,
The grease application apparatus according to claim 1 or 2, wherein the plurality of grease discharge ports have the largest opening area located in the axially central portion. An arbitrary range in the circumferential direction of the outer peripheral surface of the application nozzle or an arbitrary range in the axial direction of the outer peripheral surface is opposed to a portion where the load acts most on the inner peripheral surface of the hole of the coated part. The grease application apparatus according to claim 3 or 4, characterized in that

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