Paste film forming apparatus and component mounting apparatus

Abstract

The purpose of the present invention is to provide a paste film forming device and a component mounting device capable of preventing mixing of new and old pastes during replacement of a paste supply tube. A paste film forming device (14) is provided with: a paste scraping unit (28) that slides with respect to a table (25) to scrape paste (Pst); and a scraper (29) that is provided so as to face the paste scraping part, and that forms a paste film (PM) by smoothing the paste scraped by the paste scraping part by moving relative to the table. The paste film forming device (14) is further provided with: a paste supply tube (65) for supplying paste to the table; and a supply tube holding section (66) provided with a groove-shaped section (66M) into which the intermediate section of the paste supply tube is fitted from above. The middle part of the paste supply tube is held by the supply tube holding part, so that a paste supply port (65K) at the front end is positioned above a space between the paste scraping part and the scraping piece.

Description

Technical Field

[0001] This disclosure relates to an ointment film forming apparatus for moving a scraper relative to a worktable to form an ointment film, and a component mounting device having the ointment film forming apparatus. Background Technology

[0002] The paste film forming apparatus of the component mounting device is configured such that, after the paste supplied to the worktable is scraped by moving the paste scraper relative to the worktable, the scraped paste is flattened by a scraper to form a paste film of a certain thickness on the upper surface of the worktable (e.g., Patent Document 1). After the paste film forming apparatus forms the paste film, the component mounting device brings the component picked up by the mounting head into contact with the paste film, transfers the paste onto the lower surface of the component, and then mounts the component onto a substrate.

[0003] Existing technical documents

[0004] Patent documents

[0005] Patent Document 1: Japanese Patent Application Publication No. 2008-108884 Summary of the Invention

[0006] The problem that the invention aims to solve

[0007] In this ointment film forming apparatus, the ointment supply unit for supplying ointment to the worktable includes: a syringe for storing ointment and an ointment supply tube extending from the syringe and for supplying ointment by pressure from the syringe. A cylindrical supply tube holding part is disposed above the worktable, and the ointment supply tube is installed by passing through the supply tube holding part. Thus, the ointment supply port at the front end of the ointment supply tube passing through the supply tube holding part is positioned above the area between the ointment scraper and the scraper, and the ointment pressured by the syringe to the ointment supply tube is reliably supplied from the ointment supply port to the area between the ointment scraper and the scraper.

[0008] However, in the structure described above where the ointment supply tube is installed through a cylindrical supply tube holder, when the type of ointment used is changed, the ointment adhering to the ointment supply port may sometimes also adhere to the supply tube holder when the ointment supply tube is withdrawn from the supply tube holder. In this case, when a new ointment supply tube of a different type is passed through the supply tube holder, the old ointment adhering to the supply tube holder may transfer to (re-adhere to) the ointment supply port of the new ointment supply tube, thus potentially causing the old and new ointments to mix.

[0009] Therefore, the purpose of this disclosure is to provide an ointment film forming apparatus and a component mounting apparatus that can prevent the mixing of old and new ointments during the replacement of the ointment supply tube.

[0010] Solution for solving the problem

[0011] The ointment film forming apparatus disclosed herein includes: a worktable on which an ointment is supplied; an ointment scraper that slides relative to the worktable to scrape the ointment supplied to the worktable; a scraper disposed opposite to the ointment scraper that flattens the ointment scraped by the ointment scraper to form an ointment film by moving relative to the worktable; an ointment supply tube that supplies ointment to the worktable; and a supply tube holding portion having a groove-shaped portion that is inserted from above, wherein the middle portion of the ointment supply tube is held by the groove-shaped portion so that the ointment supply port at the front end of the ointment supply tube is located above the ointment scraper and the scraper.

[0012] The component mounting apparatus disclosed herein includes: the ointment film forming apparatus of the present disclosure described above; and a mounting head that mounts the component onto a substrate after attaching the ointment film formed by the ointment film forming apparatus to the component.

[0013] Invention Effects

[0014] According to this disclosure, it is possible to prevent the mixing of old and new ointments when the ointment supply tube is replaced. Attached Figure Description

[0015] Figure 1 This is a perspective view of a component mounting device in one embodiment of the present disclosure.

[0016] Figure 2 This is a perspective view of the ointment film forming apparatus included in a component mounting device according to one embodiment of the present disclosure.

[0017] Figure 3 This is a partial exploded perspective view of an ointment film forming apparatus according to one embodiment of the present disclosure.

[0018] Figure 4 This is a side sectional view of a portion of an ointment film forming apparatus according to one embodiment of the present disclosure.

[0019] Figure 5 (a) and (b) are side sectional views of a portion of an ointment film forming apparatus according to one embodiment of the present disclosure.

[0020] Figure 6 This is a perspective view of a portion of an ointment film forming apparatus according to one embodiment of the present disclosure.

[0021] Figure 7 This is an exploded perspective view of a part of an ointment film forming apparatus according to one embodiment of the present disclosure.

[0022] Figure 8This is an exploded perspective view of the ointment scraping portion of an ointment film forming apparatus according to one embodiment of the present disclosure.

[0023] Figure 9 This is a side sectional view of a portion of an ointment film forming apparatus according to one embodiment of the present disclosure.

[0024] Figure 10 This is a top view of a part of an ointment film forming apparatus according to one embodiment of the present disclosure.

[0025] Figure 11 This is a top cross-sectional view of a part of an ointment film forming apparatus in one embodiment of the present disclosure.

[0026] Figure 12 This is a front view of a part of an ointment film forming apparatus according to one embodiment of the present disclosure.

[0027] Figure 13 This is a perspective view of the scraping component of an ointment film forming apparatus constituting one embodiment of the present disclosure.

[0028] Figure 14 This is a perspective view showing the cover member and the supply tube holding part of the ointment film forming apparatus constituting one embodiment of the present disclosure together.

[0029] Figure 15 This is an enlarged top view of a part of an ointment film forming apparatus according to one embodiment of the present disclosure.

[0030] Figure 16 This is a block diagram illustrating the control system of a component mounting device in one embodiment of the present disclosure.

[0031] Figure 17 (a), (b), and (c) are operational illustrations of an ointment film forming apparatus according to one embodiment of this disclosure.

[0032] Figure 18 (a), (b), and (c) are operational illustrations of an ointment film forming apparatus according to one embodiment of this disclosure.

[0033] Explanation of reference numerals in the attached figures

[0034] 10 Component mounting device; 13 Component feeder; 13T Component removal position; 14 Ointment film forming device; 16 Mounting head; 25 Worktable; 28 Ointment scraping section; 29 Scraper; 30 Cover component; 32 Scraper; 61 Top plate section; 61K Cutting groove; 61H Protrusion section; 62 Side plate section; 63 Injector holder (injector holder); 64 Injector; 65 Ointment supply tube; 65M Middle section; 65K Ointment supply port; 66 Supply tube holder; 66M Groove section; 66H Protrusion piece; 67 Supply port positioning section; Pst Ointment; PM Ointment film; BH Component; KB Substrate. Detailed Implementation

[0035] Hereinafter, embodiments of the present disclosure will be described with reference to the accompanying drawings. Figure 1 This illustration shows a component mounting apparatus 10 according to one embodiment of the present disclosure. The component mounting apparatus 10 is a device for mounting a component BH onto a substrate KB, and includes a base 11, a transport conveyor 12, multiple component feeders 13, an ointment film forming apparatus 14, a head moving mechanism 15, and a mounting head 16. For ease of explanation, the left-right direction of the component mounting apparatus 10 as observed from the operator's perspective is defined as the X direction, and the front-back direction of the component mounting apparatus 10 as observed from the operator's perspective is defined as the Y direction. Furthermore, the up-down direction is defined as the Z direction.

[0036] exist Figure 1 In this process, the conveyor 12 transports components from both ends of the lower support base KB in the Y direction along the X direction and positions them in a designated working position. Each component feeder 13 is detachably mounted on a feeder base 11F connected to the end of the base 11 in the Y direction. Each component feeder 13 supplies component BH to the component removal position 13T located at the end set from the inside (conveyor 12 side) as observed by the operator OP.

[0037] exist Figure 1 In this embodiment, the head moving mechanism 15 includes a fixed beam 15a extending in the Y direction and a moving beam 15b extending in the X direction. Both ends of the fixed beam 15a are fixed to the base 11. One end of the moving beam 15b is mounted to the fixed beam 15a and moves in the direction (Y direction) along the fixed beam 15a by means of a drive mechanism (not shown).

[0038] exist Figure 1 In this configuration, the mounting head 16 is mounted on the movable beam 15b and moves along the direction (X direction) of the movable beam 15b by means of a drive mechanism (not shown). The mounting head 16 can move freely in the horizontal plane (XY plane) in the space above the base 11 by means of the movement of the movable beam 15b relative to the fixed beam 15a in the Y direction and the movement of the mounting head 16 itself relative to the movable beam 15b in the X direction.

[0039] The mounting head 16 has multiple suction nozzles 16a extending downward. The mounting head 16 uses a vacuum suction force generated at the lower end of each suction nozzle 16a to suction and pick up the component BH supplied by the component feeder 13 to the component removal position 13T.

[0040] The paste film forming apparatus 14 is used to transfer solder paste, such as solder paste Pst, onto the lower surface of the component BH picked up by the nozzle 16a from the mounting head 16. For example... Figure 2 As shown, for the ointment film forming apparatus 14, a base portion 22 is provided on the upper surface of the connecting portion 21, which is detachably connected to the feeder base 11F. A worktable 25 is provided on the upper surface of the base portion 22, with a slider 24 as a secondary component. Figure 3 As shown, a pair of guides 23 extending in the Y direction are provided opposite each other in the X direction on the upper surface of the base portion 22, and the slider 24 slides freely in the Y direction along the pair of guides 23. Therefore, the worktable 25 and the slider 24 can move freely in the Y direction above the base portion 22.

[0041] exist Figure 3 as well as Figure 4 In this design, a motor 26 is mounted on the upper surface of the base 22. A ball screw 27 extending in the Y direction is connected to the drive shaft of the motor 26. This ball screw 27 is screwed into an internally threaded portion (not shown) extending in the Y direction within the slider 24 from the front side. Therefore, when the motor 26 operates and rotates the ball screw 27, the slider 24 (and thus the worktable 25) moves in the Y direction. The motor 26 can switch the rotation direction of the ball screw 27 to move the worktable 25 to the inner position (…). Figure 5 (a) and the near anterior position ( Figure 5 It moves back and forth between (b) and (b).

[0042] exist Figure 6 as well as Figure 7 In the worktable 25, when viewed from above, it has a rectangular shape. A pair of sidewalls 25a extending in the Y direction are formed at the X-direction end of the worktable 25. An inner wall 25b extending in the X direction is formed at the inner end in the Y direction, and a near-front wall 25c extending in the X direction is formed at the near-front end in the Y direction. The upper surface 25d of the worktable 25 forms a flat ointment supply surface on which the ointment Pst is supplied.

[0043] exist Figure 2 as well as Figure 3 In the base portion 22, a paste scraper portion 28 and a scraper 29 are provided. A cover member 30 is installed on the upper part of the base portion 22 in a detachable manner.

[0044] exist Figure 6as well as Figure 7 In this case, the ointment scraping portion 28 includes a scraper holder 31 that has an integral shape extending in the X direction, and a flat scraper 32. For example... Figure 8 As shown, the scraper 32 has a rectangular shape as a long strip extending along the X direction, with the upper edge 32J and the lower edge 32K parallel to each other.

[0045] exist Figure 8 In this design, a scraper pressing part 33 is mounted on the lower surface of the scraper holder 31 by a plurality of screws 31S. The scraper 32 is installed relative to the scraper holder 31 in a detachable manner by being clamped between the scraper holder 31 and the scraper pressing part 33 by its upper edge side. When mounted on the scraper holder 31, the scraper 32 is in an inclined position with its lower edge 32K side protruding inward. Figure 4 as well as Figure 5 (a) and (b)). That is, the scraper 32 is held in the scraper holder 31 in an inclined position in which the lower edge 32K is closer to the scraper 29 than the upper edge 32J.

[0046] exist Figure 6 In this design, the dimension of the ointment scraper 28 (more specifically, the scraper holder 31) in the X direction is larger than the dimension of the worktable 25 in the X direction. A pair of holder supports 34 located at both ends of the ointment scraper 28 are respectively located on the outer side of the side wall 25a of the worktable 25. The pair of holder supports 34 are respectively mounted on the base portion 22. Therefore, the ointment scraper 28 is in a state where it is fixed relative to the base portion 22.

[0047] exist Figure 6 as well as Figure 7 In the process, a pair of block-shaped members 35 are provided at both ends of the scraper holder 31, in the portion inward of the side wall 25a of the worktable 25. Each block-shaped member 35 has a shape that extends along the moving direction (first direction) of the scraper 29 relative to the worktable 25, i.e., the Y direction, and its inner end has a protrusion 36 that protrudes inward from the lower edge 32K of the scraper 32 (i.e., protrudes from the paste scraping portion 28 toward the scraper 29). Figure 6 , Figure 7 as well as Figure 9 ).

[0048] The two block-shaped members 35 of the scraper holder 31 are located between the two side walls 25a of the worktable 25 (more inward than the side walls 25a) and close to the side walls 25a. Figure 7 , Figure 10 as well as Figure 11 Each block component 35 extends from its lower end 37 to a position close to the upper surface 25d of the worktable 25. Figure 12 ).

[0049] In this embodiment, the scraper 32 of the ointment scraping section 28 is made of a flexible material (e.g., a resin material made of engineering plastics). The lower edge 32K of the scraper 32 abuts against the upper surface 25d of the worktable 25 from above, and when viewed from the side in the X direction, it is bent into a downward convex shape. Figure 9 ).

[0050] When replacing the scraper 32 with respect to the scraper holder 31, loosen the screw 31S and pull the scraper 32 out from between the scraper holder 31 and the scraper pressing part 33. Then, after inserting the new scraper 32 between the scraper holder 31 and the scraper pressing part 33, tighten the screw 31S. Figure 8 As shown, a stepped portion 33D extending in the X direction is provided on the upper surface of the scraper pressing portion 33 (the side opposite to the scraper holder 31). When installing a new scraper 32, the scraper 32 can be positioned relative to the scraper pressing portion 33 (and therefore relative to the scraper holder 31) by bringing the upper edge 32J of the scraper 32 into contact with the stepped portion 33D.

[0051] exist Figure 8 In this design, the scraper 32 has a shape that is symmetrical with respect to the central axis 32AX, which is parallel to the lower edge 32K. Therefore, when the scraper 32 is installed on the scraper holder 31, it is only necessary to clamp either the upper edge 32J side or the lower edge 32K side of the scraper 32 between the scraper holder 31 and the scraper pressing part 33 at that point in time.

[0052] exist Figure 6 as well as Figure 7 In this process, the scraper 29 has a shape extending along the X direction and is disposed inside the ointment scraper portion 28. A film-forming portion 41 extending downwards and tapering at its lower end is formed in the center of the scraper 29. Figure 9 as well as Figure 13 ).

[0053] exist Figure 13 In the process, a pair of block-shaped scraper ends 42 are formed at both ends of the scraper 29. These two scraper ends 42 are located on the outer side of the side wall 25a of the worktable 25 and are mounted on the base portion 22. Figure 6 as well as Figure 7 Therefore, the scraper 29 becomes fixed relative to the base portion 222.

[0054] exist Figure 9 In the middle, the surface near the front of the film-forming portion 41 of the scraper 29 (the surface opposite to the paste scraper portion 28) becomes the film-forming surface 41M (see also...). Figure 13 The scraper 29 can be raised by means of a scraper lifting section 29M composed of a working cylinder, etc. Figure 9This allows the entire piece to move in the Z-direction (vertical direction). Therefore, the gap GP between the lower end of the scraper 29 and the upper surface 25d of the worktable 25 can be arbitrarily changed. As described later, this gap GP becomes the thickness of the paste film PM formed on the upper surface 25d of the worktable 25.

[0055] exist Figure 7 , Figure 11 as well as Figure 13 In this process, concave portions 43 with an inwardly recessed shape are formed between each end of the film-forming portion 41 and each of the two scraper ends 42. These two concave portions 43 are respectively located near the inner side of each of the two sidewalls 25a of the worktable 25. Figure 9 as well as Figure 11 ).

[0056] exist Figure 11 In this embodiment, the two protrusions 36 of the ointment scraping portion 28 enter the two concave portions 43 of the scraper 29 from the near front side. Thus, in this embodiment, a concave portion 43, serving as an overlapping portion, is provided on the portion of the scraper 29 opposite the end of the block member 35. This concave portion 43 overlaps with the protrusions 36 formed at that end in the X direction (a second direction that intersects the first direction, i.e., the direction of movement of the scraper 29 relative to the worktable 25).

[0057] exist Figure 9 as well as Figure 10 In the middle, the front end of the protrusion 36 is positioned at a predetermined distance from the inner surface of the concave portion 43 when it enters the concave portion 43. Therefore, the scraper 29 can be displaced in the vertical direction relative to the paste scraper portion 28, and even if the scraper 29 moves (lifts and lowers) in the Z direction by means of the scraper lifting portion 29M, the Z-direction position of the paste scraper portion 28 does not change.

[0058] exist Figure 2 as well as Figure 3 In this configuration, the cover member 30 is configured to cover a portion of the upper part of the worktable 25. The cover member 30 has a top plate portion 61 and a pair of side plate portions 62 extending downward from both ends of the top plate portion 61 in the X direction. The pair of side plate portions 62 are detachable relative to the base portion 22.

[0059] exist Figure 2 as well as Figure 3 In the middle, a portion of the base portion 22 near the front is covered by the rear housing 22B. A syringe holder 63, which serves as a syringe holder, is provided on the upper surface of the rear housing 22B, and a syringe 64 storing ointment Pst is mounted on the syringe holder 63.

[0060] exist Figure 2 as well as Figure 3 In this syringe holder 63, there is a holder base 63a fixed to the upper surface of the rear housing 22B, and a holder body 63b extending upward from the inner end of the holder base 63a and then obliquely upward toward the front. A support piece 63c extending upward is formed at the end of the holder body 63b in the X direction, and the syringe 64 is mounted to the syringe holder 63 by being clamped by the support piece 63c corresponding in the X direction.

[0061] exist Figure 2 , Figure 3 as well as Figure 4 In this syringe 64, the base of an ointment supply tube 65 is mounted on the inner end. Ointment Pst from the syringe 64 is pressurized into the ointment supply tube 65. The ointment supply tube 65 is constructed of, for example, a flexible tubular component made of resin.

[0062] exist Figure 3 In the cover member 30, a supply pipe holding part 66 is provided on the top plate portion 61. The supply pipe holding part 66 consists of a... Figure 14 The plate member is composed of a groove-shaped portion 66M extending along the Y direction as shown. The supply pipe holding portion 66 holds the middle portion 65M of the ointment supply pipe 65 so that the ointment supply port 65K at the front end of the ointment supply pipe 65 is located above the ointment scraping portion 28 and the scraping member 29. Figure 2 , Figure 4 as well as Figure 15 ).

[0063] exist Figure 14 In the top plate portion 61, a notch 61K extending rearward from the inner edge in the Y direction is provided. The supply pipe holding portion 66 is mounted to the lower surface of the cover member 30 by means of multiple small screws 61B, with its groove-shaped portion 66M overlapping the notch 61K.

[0064] exist Figure 14 as well as Figure 15 In the middle, the supply pipe holding part 66 has a plurality of protruding pieces 66H extending into the groove-shaped part 66M. The top plate part 61 of the cover member 30 also has a protruding part 61H extending into the inside of the cut groove 61K. Figure 14 ).

[0065] When the middle portion 65M of the ointment supply tube 65 is installed (held) in the groove 66M of the supply tube holding portion 66, the middle portion 65M of the ointment supply tube 65 is bent laterally and inserted into the groove 66M in a manner that avoids the protrusion 61H, and the protrusion 66H is pressed from above into the narrower part of the groove of the supply tube holding portion 66. Figure 15Thus, the ointment supply tube 65 is securely held relative to the supply tube holding part 66 (and therefore relative to the cover member 30), and its front end ointment supply port 65K is reliably located above the ointment scraping part 28 and the scraper 29.

[0066] exist Figure 15 In this embodiment, the cover member 30 is provided with a supply port positioning part 67 that protrudes inward from the inner edge of the top plate part 61. The supply port positioning part 67 is the portion that positions the ointment supply port 65K at the front end of the ointment supply tube 65 held by the supply tube holding part 66 above the worktable 25. In this embodiment, the supply port positioning part 67 is composed of a protruding portion extending in a direction intersecting the Y direction (X direction). By pressing the area near the front end of the ointment supply tube 65 held by the supply tube holding part 66 from above (the area near the front end of the front end portion), the ointment supply port 65K is positioned above the worktable 25. Figure 4 , Figure 10 as well as Figure 14 ).

[0067] In this embodiment, the ointment film forming apparatus 14 is configured to include: an ointment supply tube 65 that supplies ointment Pst to the worktable 25; and a supply tube holding portion 66 that has a groove-shaped portion 66M inserted from above, by using the groove-shaped portion 66M to hold the middle portion 65M of the ointment supply tube 65 so that the ointment supply port 65K at the front end of the ointment supply tube 65 is located above the ointment scraping portion 28 and the scraping member 29.

[0068] In this embodiment, the cover member 30 is configured to have a supply port positioning part 67, which presses down on the vicinity of the front end of the ointment supply tube 65 held by the supply tube holding part 66 from above to position the ointment supply port 65K above the worktable 25. The supply port positioning part 67 is composed of a protruding portion extending in a direction (X direction) intersecting the extending direction (Y direction) of the ointment supply tube 65 held by the supply tube holding part 66 in the middle part 65M, and positions the ointment supply port 65K above the worktable 25 by pressing down on the vicinity of the front end of the ointment supply tube 65 from above.

[0069] In this embodiment, as described above, the front end of the ointment supply tube 65 (ointment supply port 65K) is positioned in the area above the ointment scraper 28 and the scraper 29. Therefore, the ointment Pst supplied from the ointment supply port 65K by the syringe 64 falls from the position above the ointment scraper 28 and the scraper 29 onto the upper surface 25d of the worktable 25 and is stored in the area between the ointment scraper 28 and the scraper 29.

[0070] exist Figure 16In this device, the control unit 10C of the component mounting device 10 controls the conveyor 12, multiple component feeders 13, the ointment film forming apparatus 14, the head moving mechanism 15, the mounting head 16, and the syringe 64. Specifically, the control unit 10C controls the conveyor 12 to transport and position the substrate KB, and controls each component feeder 13 to supply component BH to the component removal position 13T. In addition, the control head moving mechanism 15 moves the mounting head 16, and controls the mounting head 16 to cause each nozzle 16a to pick up (adhere to) component BH.

[0071] The control unit 10C also controls the motor 26 constituting the paste film forming apparatus 14 and the scraper lifting unit 29M to form the paste film PM on the upper surface 25d of the worktable 25 according to the following instructions. When forming the paste film PM on the upper surface 25d of the worktable 25, the control unit 10C first operates the motor 26 to position the worktable 25 in a near-forward position. Figure 5 (a) to Figure 5 (b) Then, ointment Pst is supplied from syringe 64 through ointment supply tube 65 to the area between ointment scraper 28 and scraper 29. Figure 17 (a)).

[0072] After the control unit 10C supplies paste Pst to the area between the paste scraper 28 and the scraper 29, it lowers the scraper 29. Figure 17 (See arrow A in (b)) Adjust the gap (gap GP) between the lower end of the scraper 29 and the upper surface 25d of the worktable 25, and then make the gap GP consistent with the thickness of the paste film PM to be formed. Figure 17 (b)

[0073] After adjusting the gap between the lower end of the scraper 29 and the upper surface 25d of the worktable 25, the motor 26 is activated, causing the worktable 25 to move inward. Figure 17 Arrow B shown in (c). During the inward movement of the worktable 25, the scraper 29 scrapes the paste Pst towards the front wall 25c side by moving relatively relative to the worktable 25 using the film-forming part 41, thereby forming a paste film PM of a certain thickness corresponding to the gap GP on the upper surface 25d of the worktable 25. Figure 17 (c)).

[0074] After the paste film PM is formed on the upper surface 25d of the worktable 25, the mounting head 16 brings the lower surface of the component BH adsorbed by the suction nozzle 16a into contact. Figure 18Arrow C) shown in (a) enables the ointment Pst to be transferred onto the component BH. It should be noted that the thickness of the ointment film PM is kept constant, so that an accurate amount of ointment Pst is transferred onto the lower surface of component BH.

[0075] When component BH comes into contact with the ointment film PM and the ointment Pst is transferred onto component BH, areas in the ointment film PM where the thickness is no longer constant (the thickness becomes smaller) occur. Therefore, the ointment film forming apparatus 14 needs to re-form (re-form) the ointment film PM whenever a predetermined number of components BH are transferred with the ointment Pst.

[0076] In the case of reforming the paste film PM, the paste film forming apparatus 14 raises the scraper 29 after ( Figure 18 Arrow D shown in (b) activates motor 26, causing worktable 25 to move inward. Figure 18 (See arrow E in (c)). Thus, the worktable 25 is positioned near the front, and the ointment Pst on the upper surface 25d of the worktable 25 is scraped towards the inside of the worktable 25 by the scraper 32 provided in the ointment scraping part 28 sliding on the upper surface 25d of the worktable 25, becoming the aforementioned... Figure 17 The state of (a). Therefore, when execution continues... Figure 17 (b) to Figure 17 During process (c), a paste film P is formed again on the upper surface 25d of the worktable 25. Figure 17 (c)).

[0077] As described above, in this embodiment, the ointment film forming apparatus 14 includes: a worktable 25 on which an ointment Pst is supplied; an ointment scraping portion 28 that slides relative to the worktable 25 to scrape the ointment supplied to the worktable; and a scraper 29 that is disposed opposite to the ointment scraping portion 28 and is moved relative to the worktable 25 to flatten the ointment Pst scraped by the ointment scraping portion 28 to form an ointment film PM. The plate-shaped scraper 32 constituting the ointment scraping portion 28 is held in a scraper holder 31 in an inclined position in which the lower edge 32K is closer to the scraper 29 than the upper edge 32J.

[0078] Therefore, according to the ointment film forming apparatus 14 in this embodiment, when the ointment Pst supplied to the worktable 25 is scraped by the ointment scraping section 28, the scraper 32 can scrape the ointment Pst on the worktable 25 with relatively small frictional resistance. As a result, the life of the scraper 32 can be extended, thereby reducing costs.

[0079] In particular, in this embodiment, the scraper 32 is made of resin, and its lower edge 32K can be bent into a downwardly convex shape to abut against the upper surface 25d of the worktable 25, thus improving the adhesion between the scraper 32 and the upper surface 25d of the worktable 25. Therefore, in this embodiment, the paste scraping portion 28 can efficiently scrape the paste Pst on the worktable 25. Furthermore, the scraper 32, being made of engineering plastic, has high durability, resulting in a longer lifespan and contributing to cost reduction.

[0080] Furthermore, in this embodiment, as described above, the scraper 32 has a shape symmetrical with respect to the central axis 32AX parallel to the lower edge 32K (the lower edge 32K side and the upper edge 32J side have the same shape). During the pressing of the scraper 32 by the scraper holder 31 and the scraper pressing part 33, it is sufficient to clamp either the upper edge 32J side or the lower edge 32K side between the scraper holder 31 and the scraper pressing part 33 at that moment. Therefore, if the lower edge 32K of the scraper 32 deteriorates during use, it can be reinstalled in the scraper holder 31 with the upper edge 32J previously becoming the lower edge 32K, thereby extending the lifespan of the scraper 32 by two times.

[0081] Furthermore, because the scraper 32 has a thickness, its lower edge 32K has not only an edge that abuts against the worktable 25, but also an edge that does not abut against the worktable 25. These two edges of the lower edge 32K are of the same shape, allowing the edge abutting against the worktable 25 to be replaced (i.e., the scraper 32 can be flipped over) for use. The same applies to the upper edge 32J of the scraper 32; therefore, including the replacement of the upper edge 32J and the lower edge 32K, the lifespan of the scraper 32 can be extended up to four times, depending on the circumstances.

[0082] However, during the movement of the worktable 25 between the inner and near-front positions, the X-direction range of the area where the paste Pst should accumulate between the paste scraper 28 and the scraper 29 is... Figure 11 The two block members 35 are arranged along these two imaginary lines (first imaginary line L1) connecting one end of the scraper 32 to one end of the scraper member 29 (more specifically, the film-forming part 41) and the imaginary line (second imaginary line L2) connecting the other end of the scraper 32 to the other end of the film-forming part 41 of the scraper member 29.

[0083] Here, assuming that the ointment film forming apparatus 14 does not have a pair of block members 35, the ointment Pst in the area between the ointment scraper 28 and the scraper 29 may flow out of the area from the side portion in the X direction between the ointment scraper 28 and the scraper 29. However, in this embodiment, the ointment film forming apparatus 14 has block members 35. With this pair of block members 35, the movement of the ointment Pst in the side portion between the ointment scraper 28 and the scraper 29 in a direction that intersects (orthogonals) the movement direction of the scraper 29 relative to the worktable 25 is suppressed, thereby preventing the ointment Pst in the area from flowing out of the area. Therefore, in the ointment film forming apparatus 14 of this embodiment, it is possible to prevent the ointment Pst on the upper surface 25d of the worktable 25 from frequently becoming insufficient, or the ointment Pst leaking out to the outside of the worktable 25, thus preventing the occurrence of contamination near the part of the ointment film forming apparatus 14 (here, the feeder base 11F) where the ointment film forming apparatus 14 is installed.

[0084] In this embodiment, a pair of block-shaped members 35 provided on the scraper holder 31 of the ointment scraping part 28 become ointment movement inhibition parts between the ointment scraping part 28 and the scraper 29, which inhibit the movement of the ointment Pst in a second direction (X direction) that intersects the movement direction of the scraper 29 relative to the worktable 25, i.e., the first direction (Y direction).

[0085] When the component mounting apparatus 10 with the above-described structure performs a component mounting operation to mount component BH onto substrate KB, it first activates the paste film forming apparatus 14 according to the control unit 10C to form a paste film PM of a certain thickness on the worktable 25. After the paste film PM is formed by the paste film forming apparatus 14, the component mounting apparatus 10 activates the transport conveyor 12 to receive and transport the substrate KB from the upstream device of the component mounting apparatus 10 and position it at a predetermined working position.

[0086] After positioning the substrate KB in the working position, the control unit 10C activates the component feeders 13 to supply component BH to the component pick-up position 13T. Simultaneously, the head moving mechanism 15 is activated, causing the mounting head 16 to repeatedly perform component transfer operations. During the component transfer operation, the mounting head 16 moves upwards above the component feeders 13 and, after picking up the component BH supplied by the component feeders 13 using the suction nozzle 16a, moves upwards above the paste film forming apparatus 14, bringing the component BH into contact with the paste film PM. Thus, after the paste Pst is transferred onto the component BH, the mounting head 16 moves upwards above the substrate KB, mounting the component BH onto the substrate KB.

[0087] After the component mounting device 10 assembles the component BH to be assembled onto the substrate KB by repeatedly performing the component transfer action performed by the mounting head 16, the transport conveyor 12 operates to move the substrate KB downstream. Thus, the component mounting operation for one substrate KB is completed.

[0088] During the component mounting operation performed by the component mounting device 10 described above, when changing the type of component BH mounted on the substrate KB, it is sometimes necessary to change the type of paste Pst transferred to the component BH. In such cases, it is necessary to remove the worktable 25 from the slider 24 and replace it, and also to remove the syringe 64 from the syringe holder 63 and replace it with a new syringe.

[0089] When replacing the syringe 64, the ointment supply tube 65 is also removed from the supply tube holding part 66 and replaced. However, at this time, the operator only needs to pull the ointment supply tube 65 upward from the groove 66M to remove it from the supply tube holding part 66. The new ointment supply tube 65 is simply inserted into the groove 66M from above. Therefore, the operator can easily and simply perform the replacement of the syringe 64 and the ointment supply tube 65.

[0090] Furthermore, during the replacement of the syringe 64 and the ointment supply tube 65 as described above, even if the ointment supply port 65K of the ointment supply tube 65 removed from the supply tube holding part 66 has old ointment Pst (the ointment Pst before replacement) attached to it, the old ointment Pst will not attach to the ointment supply port 65K of the new ointment supply tube 65. Therefore, according to the ointment film forming apparatus 14 of this embodiment, there is no need to worry about the old ointment Pst attaching to the new ointment supply tube 65 and the old and new ointment Pst mixing when the ointment supply tube 65 is replaced.

[0091] The description of this embodiment is as above, which includes the technology of the following items (ointment film forming apparatus 14 and component mounting apparatus 10).

[0092] (Project 1)

[0093] The ointment film forming apparatus (ointment film forming apparatus 14) includes: a worktable (worktable 25) on which an ointment (ointment Pst) is supplied; an ointment scraping part (ointment scraping part 28) which slides relative to the worktable to scrape the ointment supplied to the worktable; a scraper (scraper 29) which is disposed opposite to the ointment scraping part and flattens the ointment scraped by the ointment scraping part to form an ointment film (ointment film PM) by moving relative to the worktable; an ointment supply pipe (ointment supply pipe 65) which supplies ointment to the worktable; and a supply pipe holding part (supply pipe holding part 66) which has a groove-shaped part (groove-shaped part 66M) inserted from above, and by using the groove-shaped part to hold the middle part (middle part 65M) of the ointment supply pipe, the ointment supply port (ointment supply port 65K) at the front end of the ointment supply pipe is located above between the ointment scraping part and the scraper.

[0094] The ointment film forming apparatus of Project 1 includes a supply tube holding section. This supply tube holding section holds the middle portion of the ointment supply tube so that the ointment supply port at the front end of the ointment supply tube is positioned above the ointment scraper and the scraper. The middle portion of the ointment supply tube is inserted into the supply tube from above. Therefore, when changing the type of ointment, as in existing devices that allow the ointment supply tube to pass through, the ointment adhering to the ointment supply port at the front end of the ointment supply tube will not be transferred to (re-adhered to) the supply tube holding section. This prevents the possibility of mixing of old and new ointments when changing the type of ointment (changing the ointment supply tube).

[0095] (Project 2)

[0096] Based on the ointment film forming apparatus described in Project 1, the ointment film forming apparatus includes a cover member that covers a portion of the upper part of the worktable, and the supply tube holding part is disposed on the cover member.

[0097] (Project 3)

[0098] Based on the ointment film forming apparatus described in Project 2, the cover member has a supply port positioning part that presses down from above on the vicinity of the front end of the ointment supply tube held by the supply tube holding part to position the ointment supply port above the worktable.

[0099] (Project 4)

[0100] Based on the ointment film forming apparatus described in Project 3, the supply port positioning part is composed of a protruding portion extending in a direction intersecting the extending direction of the ointment supply tube held by the supply tube holding part in the middle part, and the ointment supply port is positioned above the worktable by pressing the near part of the front end of the ointment supply tube from above.

[0101] (Project 5)

[0102] Based on the ointment film forming apparatus described in Project 2, the ointment film forming apparatus includes an syringe for pressurizing the ointment into the ointment supply tube, and an syringe holding part (syringe holding member 63) disposed on the cover member and holding the syringe.

[0103] (Project 6)

[0104] The component mounting device (component mounting device 10) includes an ointment film forming apparatus as described in any one of items 1 to 5; and a mounting head that mounts the component onto a substrate after attaching the ointment film formed by the ointment film forming apparatus to the component.

[0105] This concludes the description of this embodiment. The technology disclosed herein is not limited to the above content and various modifications are possible. For example, in the above embodiment, the supply tube holding part 66 is a structure provided on the cover member 30 that covers a portion of the worktable 25. However, the cover member 30 may not be used, and a dedicated member for holding the supply tube holding part 66 may be provided to hold it.

[0106] Furthermore, in the above embodiment, the supply port positioning portion 67 provided on the cover member 30 is composed of a protruding portion extending in a direction (X direction) intersecting the extending direction (Y direction) of the ointment supply tube 65 held by the supply tube holding portion 66 in the middle portion 65M. However, as long as its function can be realized, there is no particular limitation on the shape of the supply port positioning portion 67. It should be noted that as long as the ointment supply tube 65 is held by the supply tube holding portion 66 and its front end ointment supply port 65K is reliably positioned above between the ointment scraping portion 28 and the scraping member 29, the supply port positioning portion 67 may not be required.

[0107] In addition, in the above embodiment, the syringe 64, which is used to press the ointment Pst into the ointment supply tube 65, is provided in the syringe holding part (syringe holding member 63) of the cover member for holding, but the syringe 64 does not necessarily have to be installed in the ointment film forming device 14.

[0108] Industrial applicability

[0109] Provides an ointment film forming device and a component mounting device that can prevent the mixing of old and new ointments during the replacement of the ointment supply tube.

Claims

1. A paste film forming apparatus, wherein the paste film forming apparatus comprises: a stage to which a paste is supplied; a paste scraping section that slides with respect to the stage to scrape the paste supplied to the stage; a shaving member that is disposed opposite the paste scraping section, and that levels the paste scraped by the paste scraping section by relatively moving with respect to the stage to form a paste film; a paste supply tube that supplies the paste to the stage; and a supply tube holding section that has a groove-shaped section that is embedded from above, and that holds a middle section of the paste supply tube by the groove-shaped section to position a paste supply port of a front end of the paste supply tube above the paste scraping section and the shaving member.

2. The paste film forming apparatus according to claim 1, wherein the paste film forming apparatus comprises a cover member that covers a portion of an upper side of the stage, and the supply tube holding section is provided to the cover member.

3. The paste film forming apparatus according to claim 2, wherein the cover member has a supply port positioning section that presses a vicinity of the front end of the paste supply tube held by the supply tube holding section from above to position the paste supply port above the stage.

4. The paste film forming apparatus according to claim 3, wherein the supply port positioning section is composed of a protrusion-shaped section that extends in a direction that intersects an extending direction of the paste supply tube whose middle section is held by the supply tube holding section, and that positions the paste supply port above the stage by pressing the vicinity of the front end of the paste supply tube from above.

5. The paste film forming apparatus according to claim 2, wherein the paste film forming apparatus comprises a syringe that press-feeds the paste to the paste supply tube, and a syringe holding section that is provided to the cover member and holds the syringe.

6. A component mounting apparatus, wherein the component mounting apparatus comprises: the paste film forming apparatus according to any one of claims 1 to 5; and a mounting head that mounts a component to a substrate after the paste film formed by the paste film forming apparatus is attached to the component. ​

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