Paste film forming equipment and component mounting equipment

Abstract

The object of the present invention is to provide a paste film forming device and a component mounting device that can prevent a situation in which new and old pastes are mixed together when, for example, a paste supply pipe is replaced. [Solution] A paste film forming device (14) includes a paste scraping unit (28) that slides relative to a table (25) to scrape together paste (Pst), and a squeegee (29) that is disposed opposite the paste scraping unit (28) and moves relative to the table (25) to level the paste (Pst) scraped by the paste scraping unit (28) to form a paste film (PM). The paste film forming device (14) further includes a paste supply pipe (65) that supplies paste (Pst) to the table (25), and a supply pipe holding unit (66) that includes a groove-shaped portion (66M) into which an intermediate portion of the paste supply pipe (65) is fitted from above. With the intermediate portion of the paste supply pipe (65) held by the supply pipe holding unit (66), a paste supply port (65K) at the tip is positioned above and between the paste scraping unit (28) and the squeegee (29).

Description

[Technical Field]

[0001] The present disclosure relates to a paste film forming device that moves a squeegee relative to a table to form a paste film, and a component mounting device including the same. [Background technology]

[0002] The paste film forming device provided in the component mounting device is configured to scrape the paste supplied to the table by moving a paste scraping unit relative to the table, and then level the scraped paste with a squeegee to form a paste film of a certain thickness on the upper surface of the table (for example, Patent Document 1). After the component mounting device has formed a paste film with the paste film forming device, the mounting head brings the picked-up component into contact with the paste film, transfers the paste to the underside of the component, and then mounts the component on the board. [Prior art documents] [Patent documents]

[0003] [Patent Document 1] Japanese Patent Application Laid-Open No. 2008-108884 Summary of the Invention [Problem to be solved by the invention]

[0004] In this paste film forming apparatus, the paste supply unit that supplies paste to the table includes a syringe that stores the paste and a paste supply pipe that extends from the syringe and pumps the paste from the syringe. A cylindrical supply pipe holder is located above the table, and the paste supply pipe is attached so that it passes through the supply pipe holder. This positions the paste supply port at the tip of the paste supply pipe that passes through the supply pipe holder above the gap between the paste scraper and the squeegee, ensuring that the paste pumped from the syringe to the paste supply pipe is reliably supplied from the paste supply port to the area between the paste scraper and the squeegee.

[0005] However, in the configuration in which the paste supply pipe is attached so as to pass through the cylindrical supply pipe holder as described above, when the paste supply pipe is removed from the supply pipe holder, for example, when changing the type of paste used, the paste that had adhered to the paste supply port may also adhere to the supply pipe holder. In this case, when a new paste supply pipe after the change in type is inserted into the supply pipe holder, the old paste that had adhered to the supply pipe holder may transfer (re-adhere) to the paste supply port of the new paste supply pipe, causing the old and new pastes to mix.

[0006] Therefore, an object of the present disclosure is to provide a paste film forming device and a component mounting device that can prevent mixing of new and old paste when replacing a paste supply pipe, etc. [Means for solving the problem]

[0007] The paste film forming device of the present disclosure comprises a table to which paste is supplied, a paste scraping section that slides against the table to scrape up the paste supplied to the table, a squeegee that is arranged opposite the paste scraping section and moves relative to the table to level the paste scraped up by the paste scraping section to form a paste film, a paste supply pipe that supplies paste to the table, and a supply pipe holding section that has a grooved section that is fitted from above and holds the middle section of the paste supply pipe with the grooved section, thereby positioning the paste supply port at the tip of the paste supply pipe above and between the paste scraping section and the squeegee.

[0008] The component mounting device of the present disclosure includes the paste film forming device of the present disclosure described above, and a mounting head that attaches components to the paste film formed by the paste film forming device and then mounts them on a substrate. [Effects of the Invention]

[0009] According to the present disclosure, it is possible to prevent the mixture of new and old paste when replacing the paste supply pipe, for example. [Brief explanation of the drawings]

[0010] [Figure 1] 1 is a perspective view of a portion of a component mounting device according to an embodiment of the present disclosure. [Figure 2] 1 is a perspective view of a paste film forming device provided in a component mounting device according to an embodiment of the present disclosure. FIG. [Figure 3] 1 is a partially exploded perspective view of a paste film forming apparatus according to an embodiment of the present disclosure. [Figure 4] 1 is a side cross-sectional view of a portion of a paste film forming apparatus according to an embodiment of the present disclosure. [Figure 5] 1A and 1B are side cross-sectional views of a portion of a paste film forming apparatus according to an embodiment of the present disclosure. [Figure 6] 1 is a perspective view of a portion of a paste film forming apparatus according to an embodiment of the present disclosure. [Figure 7] 1 is an exploded perspective view of a portion of a paste film forming apparatus according to an embodiment of the present disclosure. [Figure 8] 1 is an exploded perspective view of a paste scraping unit included in a paste film forming apparatus according to an embodiment of the present disclosure. FIG. [Figure 9] 1 is a side cross-sectional view of a portion of a paste film forming apparatus according to an embodiment of the present disclosure. [Figure 10] 1 is a plan view of a portion of a paste film forming apparatus according to an embodiment of the present disclosure. [Figure 11] 1 is a plan cross-sectional view of a portion of a paste film forming apparatus according to an embodiment of the present disclosure. [Figure 12] 1 is a front view of a portion of a paste film forming apparatus according to an embodiment of the present disclosure. [Figure 13] FIG. 2 is a perspective view of a squeegee constituting the paste film forming apparatus according to the embodiment of the present disclosure. [Figure 14] 1 is a perspective view showing a cover member constituting a paste film forming apparatus according to an embodiment of the present disclosure together with a supply pipe holding portion; [Figure 15]1 is an enlarged plan view of a portion of a paste film forming apparatus according to an embodiment of the present disclosure. [Figure 16] FIG. 2 is a block diagram showing a control system of the component mounting device according to the embodiment of the present disclosure. [Figure 17] 1A, 1B, and 1C are explanatory diagrams illustrating the operation of a paste film forming device according to an embodiment of the present disclosure. [Figure 18] 1A, 1B, and 1C are explanatory diagrams illustrating the operation of a paste film forming device according to an embodiment of the present disclosure. DETAILED DESCRIPTION OF THE INVENTION

[0011] Hereinafter, embodiments of the present disclosure will be described with reference to the drawings. Fig. 1 shows a component mounting device 10 according to one embodiment of the present disclosure. The component mounting device 10 is a device that mounts components BH on a substrate KB, and includes a base 11, a transport conveyor 12, multiple part feeders 13, a paste film forming device 14, a head moving mechanism 15, and a mounting head 16. For ease of explanation, the left-right direction of the component mounting device 10 as seen from the operator OP is defined as the X direction, and the front-to-back direction of the component mounting device 10 as seen from the operator OP is defined as the Y direction. The up-down direction is defined as the Z direction.

[0012] 1, the transport conveyor 12 supports both Y-direction ends of the board KB from below, transports it in the X direction, and positions it at a predetermined work position. Each part feeder 13 is detachably attached to a feeder base 11F connected to the Y-direction end of the base 11. Each part feeder 13 supplies parts BH to a part pick-up position 13T set at the end on the far side (the transport conveyor 12 side) as seen from the worker OP.

[0013] 1, head moving mechanism 15 includes fixed beam 15a extending in the Y direction and moving beam 15b extending in the X direction. Both ends of fixed beam 15a are fixed to base 11. One end of moving beam 15b is attached to fixed beam 15a, and is moved in the direction along fixed beam 15a (Y direction) by a drive mechanism (not shown).

[0014] 1, the mounting head 16 is attached to a moving beam 15b and is moved in the direction (X direction) along the moving beam 15b by a drive mechanism (not shown). The mounting head 16 is movable in a horizontal plane (XY plane) in the space above the base 11 by the movement of the moving beam 15b in the Y direction relative to the fixed beam 15a and the movement of the mounting head 16 itself in the X direction relative to the moving beam 15b.

[0015] The mounting head 16 is equipped with a plurality of nozzles 16a extending downward. The mounting head 16 generates a vacuum suction force at the bottom end of each nozzle 16a, thereby suctioning and picking up the component BH supplied to the component removal position 13T by the part feeder 13 onto the nozzle 16a.

[0016] The paste film forming device 14 is a device for transferring a paste Pst, such as solder paste, onto the underside of a component BH picked up by the nozzle 16a of the mounting head 16. As shown in FIG. 2, the paste film forming device 14 has a base 22 on the upper surface of a connection portion 21 that is detachably connected to the feeder base 11F, and a table 25 is provided on the upper surface of the base 22 via a slider 24. As shown in FIG. 3, a pair of guides 23 extending in the Y direction are provided on the upper surface of the base 22 facing each other in the X direction, and the slider 24 is slidable in the Y direction along the pair of guides 23. Therefore, the table 25, together with the slider 24, is movable in the Y direction above the base 22.

[0017] 3 and 4, a motor 26 is provided on the upper surface of the base portion 22. A ball screw 27 extending in the Y direction is connected to the drive shaft of the motor 26, and the ball screw 27 is threaded from the front side into a female screw portion (not shown) extending in the Y direction within the slider 24. Therefore, when the motor 26 is operated to rotate the ball screw 27, the slider 24 (and therefore the table 25) moves in the Y direction. The motor 26 can switch the rotation direction of the ball screw 27 to move the table 25 back and forth between a rear position (FIG. 5(a)) and a front position (FIG. 5(b)).

[0018] 6 and 7, table 25 has a rectangular shape in a plan view. A pair of side walls 25a extending in the Y direction are formed at the X-direction end of table 25. A rear wall 25b extending in the X direction is formed at the rear end in the Y direction, and a front wall 25c extending in the X direction is formed at the front end in the Y direction. An upper surface 25d of table 25 serves as a flat paste supply surface onto which paste Pst is supplied.

[0019] 2 and 3, the base portion 22 is provided with a paste scraping portion 28 and a squeegee 29. A cover member 30 is detachably attached to the top of the base portion 22.

[0020] 6 and 7, the paste scraping unit 28 includes a scraper holder 31 having a shape extending in the X direction as a whole, and a flat scraper 32. As shown in Fig. 8, the scraper 32 has a long rectangular shape extending in the X direction as a whole, with an upper edge 32J and a lower edge 32K parallel to each other.

[0021] In Figure 8, a scraper holder 33 is attached to the underside of the scraper holder 31 by a plurality of screws 31S. The scraper 32 is detachably attached to the scraper holder 31 by having its upper edge sandwiched between the scraper holder 31 and the scraper holder 33. When attached to the scraper holder 31, the scraper 32 is in an oblique position with its lower edge 32K protruding toward the rear (Figures 4 and 5(a) and (b)). In other words, the scraper 32 is held by the scraper holder 31 in an oblique position in which its lower edge 32K is closer to the squeegee 29 than its upper edge 32J.

[0022] 6, the dimension in the X direction of paste scraping unit 28 (more specifically, of scraper holder 31) is larger than the dimension in the X direction of table 25, and a pair of holder support parts 34 provided at both ends thereof are each located outside side wall 25a of table 25. The pair of holder support parts 34 are each attached to base part 22, so that paste scraping unit 28 as a whole is fixed relatively to base part 22.

[0023] 6 and 7, a pair of block-shaped members 35 are provided on both ends of the scraper holder 31 inward of the side wall 25a of the table 25. Each block-shaped member 35 has a shape that extends in the Y direction, which is the direction of movement of the squeegee 29 relative to the table 25 (first direction), and each end on the far side has a protruding portion 36 that protrudes further inward than the lower edge 32K of the scraper 32 (i.e., protruding from the paste scraping portion 28 toward the squeegee 29) (FIGS. 6, 7, and 9).

[0024] The two block-shaped members 35 of the scraper holder 31 are located between (inner than) the two side walls 25a of the table 25 and in close proximity to the side walls 25a (FIGS. 7, 10, and 11). The lower end 37 of each block-shaped member 35 extends to a position close to the upper surface 25d of the table 25 (FIG. 12).

[0025] In this embodiment, the scraper 32 included in the paste scraping unit 28 is made of a flexible material (for example, a resin material made of engineering plastic). The lower edge 32K of the scraper 32 abuts against the upper surface 25d of the table 25 from above, and is bent into a downwardly convex shape in a side view seen from the X direction (FIG. 9).

[0026] When replacing the scraper 32 with respect to the scraper holder 31, the screws 31S are loosened and the scraper 32 is pulled out from between the scraper holder 31 and the scraper holder 33. A new scraper 32 is then inserted between the scraper holder 31 and the scraper holder 33, and the screws 31S are tightened. As shown in FIG. 8 , a step 33D extending in the X direction is provided on the top surface of the scraper holder 33 (the surface facing the scraper holder 31). When attaching a new scraper 32, the upper edge 32J of the scraper 32 is brought into contact with this step 33D, thereby enabling the scraper 32 to be positioned relative to the scraper holder 33 (and therefore the scraper holder 31).

[0027] 8, the scraper 32 has a symmetrical shape with respect to the central axis 32AX parallel to the lower edge 32K. Therefore, when attaching the scraper 32 to the scraper holder 31, any one of the upper edge 32J side and the lower edge 32K side of the scraper 32 at that time can be sandwiched between the scraper holder 31 and the scraper pressing part 33.

[0028] 6 and 7, squeegee 29 has a shape that extends in the X direction, and is disposed on the rear side of paste scraping portion 28. A film forming portion 41 that extends downward and has a tapered lower end is formed in the center of squeegee 29 (FIGS. 9 and 13).

[0029] 13, a pair of block-shaped squeegee ends 42 are formed on both ends of the squeegee 29. The pair of squeegee ends 42 are located outside the side wall 25a of the table 25 and are attached to the base portion 22 (FIGS. 6 and 7). Therefore, the entire squeegee 29 is fixed relative to the base portion 22.

[0030] In Figure 9, the surface of the squeegee 29 on the front side of the film-forming unit 41 (the surface facing the paste scraping unit 28) is the film-forming surface 41M (see also Figure 13). The squeegee 29 can be moved in the Z direction (up and down direction) by a squeegee lifting unit 29M (Figure 9), which is made up entirely of a cylinder or the like. Therefore, the gap GP, which is the distance (distance in the Z direction) between the lower end of the squeegee 29 and the upper surface 25d of the table 25, can be changed as desired. This gap GP determines the thickness of the paste film PM formed on the upper surface 25d of the table 25, as will be described later.

[0031] 7, 11, and 13, recessed portions 43 each having a recessed shape toward the rear are formed between each of the two end portions of the film forming section 41 and each of the two squeegee ends 42. These two recessed portions 43 are located close to the inner sides of the two side walls 25a of the table 25 (FIGS. 9 and 11).

[0032] 11, each of the two protrusions 36 of the paste scraping portion 28 enters each of the two recesses 43 of the squeegee 29 from the front side of the squeegee 29. In this manner, in the present embodiment, the portion of the squeegee 29 facing the end of the block-shaped member 35 is provided with a recess 43 as an overlapping portion that overlaps with the protrusion 36 formed on that end in the X direction (a second direction intersecting with the first direction, which is the direction of movement of the squeegee 29 relative to the table 25).

[0033] 9 and 10, when the tip of protrusion 36 is inserted into recessed portion 43, it is positioned a predetermined distance from the inner surface of recessed portion 43. Therefore, squeegee 29 can be displaced in the vertical direction relative to paste scraping portion 28, and even if squeegee 29 is moved (raised and lowered) in the Z direction by squeegee lifting portion 29M, the position of paste scraping portion 28 in the Z direction does not change.

[0034] 2 and 3, the cover member 30 is provided to cover a portion of the upper part of the table 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 from the base portion 22.

[0035] 2 and 3, a portion of the front side of base portion 22 is covered by rear housing 22B. A syringe holder 63 serving as a syringe holding portion is provided on the upper surface of rear housing 22B, and a syringe 64 in which paste Pst is stored is attached to syringe holder 63.

[0036] 2 and 3, syringe holder 63 has holder base 63a fixed to the upper surface of rear housing 22B, and holder main body 63b extending upward from the rear end of holder base 63a and then extending diagonally upward toward the front. Support pieces 63c extending upward are formed on the X-direction end of holder main body 63b, and syringe 64 is attached to syringe holder 63 by being clamped by support pieces 63c corresponding to the X-direction.

[0037] 2, 3, and 4, a base of a paste supply pipe 65 is attached to the rear end of the syringe 64. The paste Pst in the syringe 64 is pressure-fed to the paste supply pipe 65. The paste supply pipe 65 is made of, for example, a flexible tubular member made of resin.

[0038] 3, a supply pipe holding portion 66 is provided on the top plate portion 61 of the cover member 30. The supply pipe holding portion 66 is made of a plate member having a groove-shaped portion 66M extending along the Y direction as shown in FIG. 14. The supply pipe holding portion 66 holds the middle portion 65M of the paste supply pipe 65, thereby positioning the paste supply port 65K at the tip of the paste supply pipe 65 above and between the paste scraping portion 28 and the squeegee 29 (FIGS. 2, 4, and 15).

[0039] 14, a notched groove 61K extending rearward from the rear edge along the Y direction is provided in the top plate 61. The supply pipe holding portion 66 is attached to the underside of the cover member 30 with a plurality of screws 61B so that the groove-shaped portion 66M overlaps the notched groove 61K in the vertical direction.

[0040] 14 and 15, supply pipe holding portion 66 has a plurality of protruding pieces 66H that protrude into groove portion 66M. Top plate portion 61 of cover member 30 also has protruding portions 61H that protrude into cutout groove 61K (FIG. 14).

[0041] When attaching (holding) middle section 65M of paste supply pipe 65 to groove section 66M of supply pipe holding section 66, middle section 65M of paste supply pipe 65 is bent laterally to avoid overhanging section 61H, fitted into groove section 66M, and then pushed from above into the portion of supply pipe holding section 66 where the groove width has been narrowed by overhanging piece 66H (FIG. 15). As a result, paste supply pipe 65 is firmly held by supply pipe holding section 66 (and therefore by cover member 30), and paste supply port 65K at its tip is reliably positioned above and between paste scraping section 28 and squeegee 29.

[0042] 15, the cover member 30 is provided with a supply port positioning portion 67 that protrudes from the rear edge of the top plate portion 61 toward the rear side. The supply port positioning portion 67 is a portion that positions the paste supply port 65K at the tip of the paste supply pipe 65 held by the supply pipe holding portion 66 above the table 25. In this embodiment, the supply port positioning portion 67 is made up of a protruding portion that extends in a direction intersecting the Y direction (X direction), and by pressing from above on the vicinity of the tip of the paste supply pipe 65 held by the supply pipe holding portion 66 (the front side of the tip), the paste supply port 65K is positioned above the table 25 (FIGS. 4, 10, and 14).

[0043] In this way, the paste film forming device 14 in this embodiment is configured with a paste supply pipe 65 that supplies paste Pst to the table 25, and a supply pipe holding section 66 that has a groove-shaped portion 66M that is fitted from above, and that holds the middle portion 65M of the paste supply pipe 65 with the groove-shaped portion 66M, thereby positioning the paste supply port 65K at the tip of the paste supply pipe 65 above and between the paste scraping section 28 and the squeegee 29.

[0044] Furthermore, in this embodiment, the cover member 30 is configured to have a supply port positioning portion 67 that presses from above the vicinity of the tip of the paste supply pipe 65 held by the supply pipe holding portion 66 to position the paste supply port 65K above the table 25. The supply port positioning portion 67 is made up of a protruding portion that extends in a direction (X direction) that intersects with the direction in which the paste supply pipe 65, whose middle portion 65M is held by the supply pipe holding portion 66, extends (Y direction), and presses from above the vicinity of the tip of the paste supply pipe 65 to position the paste supply port 65K above the table 25.

[0045] In this embodiment, as described above, the tip of paste supply pipe 65 (paste supply port 65K) is positioned in the upper region between paste scraping portion 28 and squeegee 29. Therefore, paste Pst supplied from paste supply port 65K by syringe 64 drops from a position above between paste scraping portion 28 and squeegee 29 onto upper surface 25d of table 25 and is stored in the region between paste scraping portion 28 and squeegee 29.

[0046] 16, a control unit 10C provided in component mounting device 10 controls transport conveyor 12, multiple part feeders 13, paste film forming device 14, head moving mechanism 15, mounting head 16, and syringe 64. Specifically, control unit 10C controls transport conveyor 12 to transport and position substrate KB, and controls each part feeder 13 to supply components BH to component removal position 13T. It also controls head moving mechanism 15 to move mounting head 16, and controls mounting head 16 to have each nozzle 16a pick up (pick up) components BH.

[0047] The control unit 10C also controls the motor 26 and the squeegee lifting / lowering unit 29M that constitute the paste film forming device 14 to form a paste film PM on the upper surface 25d of the table 25 in the following manner. When forming a paste film PM on the upper surface 25d of the table 25, the control unit 10C first operates the motor 26 to position the table 25 to the front side (FIG. 5(a) → FIG. 5(b)). Then, the paste Pst is supplied from the syringe 64 through the paste supply pipe 65 to the region between the paste scraping unit 28 and the squeegee 29 (FIG. 17(a)).

[0048] After supplying the paste Pst to the area between the paste scraping section 28 and the squeegee 29, the control section 10C lowers the squeegee 29 (arrow A shown in Figure 17(b)) and adjusts the distance (gap GP) between the lower end of the squeegee 29 and the upper surface 25d of the table 25 so that the gap GP matches the thickness of the paste film PM to be formed (Figure 17(b)).

[0049] After adjusting the gap between the lower end of the squeegee 29 and the upper surface 25d of the table 25, the motor 26 is operated to move the table 25 toward the rear (arrow B shown in FIG. 17(c)). While the table 25 is moving toward the rear, the squeegee 29 moves relative to the table 25, causing the film forming unit 41 to scrape the paste Pst toward the front wall 25c, and a paste film PM of a constant thickness corresponding to the gap GP is formed on the upper surface 25d of the table 25 (FIG. 17(c)).

[0050] Once the paste film PM has been formed on the upper surface 25d of the table 25, the mounting head 16 can transfer the paste Pst to the component BH by bringing the nozzle 16a into contact with the underside of the component BH (arrow C) shown in FIG. 18(a)). Note that the thickness of the paste film PM is kept constant, so that an accurate amount of paste Pst is transferred to the underside of the component BH.

[0051] When the components BH come into contact with the paste film PM and the paste Pst is transferred to the components BH, the paste film PM will have portions where its thickness is not constant (where its thickness is small). For this reason, the paste film forming device 14 must re-form (re-form) the paste film PM every time a predetermined number of components BH transfer the paste Pst.

[0052] When the paste film PM is to be reformed, the paste film forming device 14 raises the squeegee 29 (arrow D shown in FIG. 18(b)) and then operates the motor 26 to move the table 25 toward the rear (arrow E shown in FIG. 18(c)). As a result, the table 25 is positioned at the front side, and the paste Pst on the upper surface 25d of the table 25 is scraped toward the rear side of the table 25 by the scraper 32 provided in the paste scraping unit 28 sliding over the upper surface 25d of the table 25, resulting in the state shown in FIG. 17(a) described above. Therefore, when the steps from FIG. 17(b) to FIG. 17(c) are subsequently performed, the paste film PM is reformed on the upper surface 25d of the table 25 (FIG. 17(c)).

[0053] As described above, in this embodiment, the paste film forming device 14 comprises a table 25 to which the paste Pst is supplied, a paste scraping section 28 that slides against the table 25 to scrape the paste supplied to the table, and a squeegee 29 that is arranged opposite the paste scraping section 28 and moves relative to the table 25 to level the paste Pst scraped by the paste scraping section 28 to form a paste film PM, and the plate-shaped scraper 32 that constitutes the paste scraping section 28 is held by the scraper holder 31 so that its lower edge 32K is in an oblique position closer to the squeegee 29 than its upper edge 32J.

[0054] Therefore, according to the paste film forming device 14 of this embodiment, when the paste scraping unit 28 scrapes the paste Pst supplied to the table 25, the scraper 32 can scrape the paste Pst on the table 25 with little frictional resistance. This makes it possible to extend the life of the scraper 32 and reduce costs.

[0055] In particular, in this embodiment, the scraper 32 is made of resin, and the lower edge 32K of the scraper 32 can be brought into contact with the upper surface 25d of the table 25 while the scraper 32 is bent into a downwardly convex shape, thereby increasing the degree of contact between the scraper 32 and the upper surface 25d of the table 25. This also makes it possible in this embodiment to efficiently scrape the paste Pst on the table 25 using the paste scraping portion 28. Furthermore, if the scraper 32 is made of engineering plastic, it has high durability and a long lifespan, which also contributes to cost reduction.

[0056] 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), and when the scraper 32 is held down by the scraper holder 31 and the scraper pressing portion 33, any one of the upper edge 32J side and the lower edge 32K side at that time can be sandwiched between the scraper holder 31 and the scraper pressing portion 33. Therefore, if the lower edge 32K of the scraper 32 deteriorates after use, the scraper 32 can be reattached to the scraper holder 31 upside down so that the side that was previously the upper edge 32J becomes the lower edge 32K, thereby doubling the life of the scraper 32.

[0057] Furthermore, because the scraper 32 has a thickness, the lower edge 32K of the scraper 32 has not only an edge that abuts against the table 25, but also an edge that does not abut against the table 25. These two edges of the lower edge 32K have the same shape, and the edge that abuts against the table 25 can be swapped (i.e., the scraper 32 can be turned upside down) for use. The same is true for the upper edge 32J of the scraper 32, so the life of the scraper 32 can be extended up to four times by swapping the upper edge 32J and lower edge 32K as described above.

[0058] Incidentally, when table 25 is moved between the rear position and the front position, the range in the X direction of the area where paste Pst should be accumulated between paste scraping unit 28 and squeegee 29 is between an imaginary line (first imaginary line L1) connecting one end of scraper 32 and one end of squeegee 29 (more specifically, film forming unit 41) in Fig. 11, and an imaginary line (second imaginary line L2) connecting the other end of scraper 32 and the other end of film forming unit 41 of squeegee 29. In this embodiment, two block-shaped members 35 are arranged along these two imaginary lines (first imaginary line L1 and second imaginary line L2).

[0059] If the paste film forming device 14 did not have the pair of block-shaped members 35, the paste Pst in the region between the paste scraping unit 28 and the squeegee 29 would flow out of the region from the side portions in the X direction between the paste scraping unit 28 and the squeegee 29. However, in this embodiment, the paste film forming device 14 has the pair of block-shaped members 35, and these block-shaped members 35 suppress the movement of the paste Pst in the region at the side portions between the paste scraping unit 28 and the squeegee 29 in a direction intersecting (perpendicular to) the movement direction of the squeegee 29 relative to the table 25, thereby preventing the paste Pst in the region from flowing out of the region. Therefore, the paste film forming device 14 in this embodiment can prevent the amount of paste Pst on the upper surface 25d of the table 25 from frequently becoming insufficient, or the spilled paste Pst leaking out of the table 25 and soiling the vicinity of the portion where the paste film forming device 14 is attached (here, the feeder base 11F).

[0060] In this embodiment, a pair of block-shaped members 35 provided on the scraper holder 31 of the paste scraping portion 28 serve as paste movement suppression portions on the side between the paste scraping portion 28 and the squeegee 29 that suppress the movement of the paste Pst in a second direction (X direction) that intersects with the first direction (Y direction), which is the movement direction of the squeegee 29 relative to the table 25.

[0061] When the component mounting device 10 having the above configuration performs a component mounting operation of mounting components BH on a substrate KB, first, the control unit 10C operates the paste film forming device 14 to form (deposit) a paste film PM of a certain thickness on its table 25. After the paste film PM has been formed by the paste film forming device 14, the component mounting device 10 operates the transport conveyor 12 to receive and carry in the substrate KB sent from an apparatus upstream of the component mounting device 10, and position it at a predetermined work position.

[0062] After positioning the substrate KB at the work position, the control unit 10C operates each part feeder 13 to supply components BH to the component removal position 13T, while operating the head movement mechanism 15 to cause the mounting head 16 to repeatedly perform component transfer operations. In the component transfer operation, the mounting head 16 moves above the part feeders 13 and picks up the components BH supplied by the part feeders 13 with the nozzles 16a, and then moves above the paste film forming device 14 to bring the components BH into contact with the paste film PM. After the paste Pst is transferred to the components BH, the mounting head 16 moves above the substrate KB and mounts the components BH on the substrate KB.

[0063] The component mounting device 10 mounts the components BH to be mounted on the board KB by repeatedly performing the component transfer operation using the mounting head 16, and then operates the transport conveyor 12 to transport the board KB downstream, thereby completing the component mounting operation for one board KB.

[0064] In the component mounting operation using the component mounting device 10 as described above, it may be necessary to change the type of paste Pst to be transferred to the components BH, for example, when changing the type of components BH to be mounted on the board KB. In such cases, it is necessary to not only remove the table 25 from the slider 24 and replace it, but also remove the syringe 64 from the syringe holder 63 and replace it with a new one.

[0065] When replacing the syringe 64, the paste supply pipe 65 is also removed from the supply pipe holding portion 66 and replaced, and at this time the operator OP simply removes the paste supply pipe 65 from the supply pipe holding portion 66 by pulling it upward away from the groove portion 66M, and after replacement, the new paste supply pipe 65 simply fits its middle portion 65M into the groove portion 66M from above. This allows the operator OP to replace the syringe 64 and the paste supply pipe 65 simply and easily.

[0066] Furthermore, when replacing the syringe 64 and the paste supply pipe 65 as described above, even if old paste Pst (paste Pst before replacement) is attached to the paste supply port 65K of the paste supply pipe 65 removed from the supply pipe holding portion 66, the old paste Pst will not adhere to the paste supply port 65K of the new paste supply pipe 65. Therefore, according to the paste film forming device 14 of this embodiment, when replacing the paste supply pipe 65, there is no risk that the old paste Pst will adhere to the new paste supply pipe 65 and the new and old paste Pst will be mixed.

[0067] The present embodiment has been described above, and includes the following techniques (paste film forming device 14 and component mounting device 10).

[0068] (Item 1) a paste film forming device (paste film forming device 14) comprising: a table (table 25) to which paste (paste Pst) is supplied; a paste scraping section (paste scraping section 28) that slides relative to the table to scrape the paste supplied to the table; a squeegee (squeegee 29) that is arranged opposite the paste scraping section and moves relative to the table to level the paste scraped by the paste scraping section and form a paste film (paste film PM); a paste supply pipe (paste supply pipe 65) that supplies paste to the table; and a supply pipe holding section (supply pipe holding section 66) that has a groove-shaped section (groove-shaped section 66M) that is fitted from above and that holds an intermediate section (intermediate section 65M) of the paste supply pipe, thereby positioning the paste supply port (paste supply port 65K) at the tip of the paste supply pipe above and between the paste scraping section and the squeegee.

[0069] The paste film forming device of item 1 is equipped with a supply pipe holding part that holds the middle part of the paste supply pipe to position the paste supply port at the tip of the paste supply pipe above and between the paste scraping part and the squeegee, and this supply pipe holding part is designed so that the middle part of the paste supply pipe is fitted into this supply pipe holding part from above. Therefore, unlike conventional paste supply pipe insertion devices, when changing the type of paste, there is no risk of the paste adhering to the paste supply port at the tip of the paste supply pipe being transferred (re-adhered) to the supply pipe holding part, and it is possible to prevent the new and old pastes from mixing when changing the type of paste (replacing the paste supply pipe).

[0070] (Item 2) Item 1. The paste film forming apparatus according to item 1, further comprising a cover member that covers a portion of the upper part of the table, and the supply pipe holding portion is provided on the cover member.

[0071] (Item 3) Item 3. The paste film forming apparatus according to item 2, wherein the cover member has a supply port positioning portion that presses from above a portion near the tip of the paste supply pipe held by the supply pipe holding portion to position the paste supply port above the table.

[0072] (Item 4) Item 4. The paste film forming device according to item 3, wherein the supply port positioning unit is composed of a protruding portion extending in a direction intersecting the extension direction of the paste supply pipe, the intermediate portion of which is held by the supply pipe holding unit, and positions the paste supply port above the table by pressing from above on a portion near the tip of the paste supply pipe.

[0073] (Item 5) Item 3. The paste film forming device according to item 2, further comprising: a syringe for pressure-feeding paste to the paste supply pipe; and a syringe holding portion (syringe holder 63) provided on the cover member for holding the syringe.

[0074] (Item 6) A component mounting device (component mounting device 10) comprising: the paste film forming device according to any one of items 1 to 5; and a mounting head that attaches components to the paste film formed by the paste film forming device and then mounts the components on a substrate.

[0075] While the present embodiment has been described above, the technology of the present disclosure is not limited to the above and various modifications are possible. For example, in the above embodiment, supply pipe holding portion 66 is provided on cover member 30 that covers a portion of the upper part of table 25. However, instead of cover member 30, a dedicated member for holding supply pipe holding portion 66 may be provided and the supply pipe holding portion 66 may be held by this.

[0076] Furthermore, in the above-described 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 direction (Y direction) in which the paste supply pipe 65, whose middle portion 65M is held by the supply pipe holding portion 66, extends, but the shape of the supply port positioning portion 67 is not important as long as it performs its function. Note that, as long as the paste supply pipe 65 is held by the supply pipe holding portion 66 so that the paste supply port 65K at its tip is reliably positioned above and between the paste scraping portion 28 and the squeegee 29, the supply port positioning portion 67 may be omitted.

[0077] In addition, in the above-described embodiment, the syringe 64 that pressure-feeds the paste Pst to the paste supply pipe 65 is held by a syringe holding portion (syringe holder 63) provided on the cover member, but the syringe 64 does not necessarily have to be attached to the paste film forming device 14. [Industrial Applicability]

[0078] A paste film forming device and a component mounting device are provided that can prevent a situation in which new and old pastes are mixed together when a paste supply pipe is replaced, etc. [Explanation of symbols]

[0079] 10. Parts mounting equipment 13 Parts feeder 13T Parts removal position 14 Paste film forming device 16 Mounting head 25 tables 28 Paste scraping section 29 Squeegee 30 Cover member 32 Scraper 61 Top plate 61K Notched groove 61H Overhang 62 Side plate part 63 Syringe holder (syringe holding part) 64 syringe 65 Paste supply pipe 65M middle part 65K Paste supply port 66 Supply pipe holding part 66M Groove 66H overhang piece 67 Supply port positioning part PST Paste PM paste film BH parts KB board

Claims

1. a table on which the paste is dispensed; a paste scraping unit that slides relative to the table and scrapes the paste supplied to the table; a squeegee that is provided opposite the paste scraping unit and moves relative to the table to level the paste scraped by the paste scraping unit and form a paste film; a paste supply pipe for supplying paste to the table; a supply pipe holding portion having a groove-shaped portion fitted from above, the groove-shaped portion holding an intermediate portion of the paste supply pipe, thereby positioning a paste supply port at the tip of the paste supply pipe above and between the paste scraping portion and the squeegee; A paste film forming apparatus comprising:

2. 2. The paste film forming apparatus according to claim 1, further comprising a cover member that covers a part of an upper portion of said table, said supply pipe holding portion being provided on said cover member.

3. 3. The paste film forming apparatus according to claim 2, wherein the cover member has a supply port positioning portion that presses from above the vicinity of the tip of the paste supply pipe held by the supply pipe holding portion to position the paste supply port above the table.

4. 4. The paste film forming device of claim 3, wherein the supply port positioning portion comprises a protrusion extending in a direction intersecting the extension direction of the paste supply pipe, the middle portion of which is held by the supply pipe holding portion, and positions the paste supply port above the table by pressing from above on the portion near the tip of the paste supply pipe.

5. 3. The paste film forming device according to claim 2, further comprising: a syringe for pressure-feeding the paste to the paste supply pipe; and a syringe holding portion provided on the cover member for holding the syringe.

6. The paste film forming apparatus according to any one of claims 1 to 5, a mounting head that attaches components to the paste film formed by the paste film forming device and then mounts the components on a substrate; A component mounting device comprising:

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