JP2010099719A - Release agent spraying device - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a release agent spraying device with a mixing block where a release agent hardly remains in a release agent distribution flow passage after the completion of spraying stages, and a series of spraying stages can be completed in a short time. <P>SOLUTION: In a mixing block 7, an air distribution flow passage 71 and a release agent distribution flow passage 72 are formed. The release agent distribution flow passage 72 has an elliptic plane shape, whose cross-sectional shape is formed so as to be a downward channel shape, and in which both the edge parts in the longitudinal direction are provided with a release agent introduction flow passage 75 having a circular cross section. The release agent introduction flow passage 75 is formed in such a manner that a part of the circumference is contacted with the bottom face 72a of the release agent distribution flow passage 72, and the release agent distribution flow passage 72 and the release agent introduction flow passage 75 are partially communicate with each other without having a level difference. Further, the spaces between the bottom face 72a and the wall faces 72b of the release agent distribution flow passage 72 are provided with curved faces 72c smoothly connecting the respective faces. <P>COPYRIGHT: (C)2010,JPO&INPIT

Description

  The present invention relates to a release agent spraying apparatus that sprays a release agent onto a mold surface of a die provided in a die casting machine, and in particular, a release agent mixed with air by a mixing valve to a nozzle unit. The present invention relates to a configuration of a mixing block that distributes to a plurality of spray tubes provided.

  In order to smoothly remove the cast product cast by the die casting machine from the mold, it is necessary to spray a mold release agent on the mold surfaces of the fixed side mold and the movable side mold in the mold open state. . The release agent spray device is a device for this purpose, and conventionally, a release agent spray unit that sprays the release agent on the mold surface is attached to the stand so as to be movable back and forth and up and down. (For example, refer to Patent Document 1). This release agent spray device is used by fastening a stand to a predetermined part of a die casting machine.

  By the way, the release agent spray device disclosed in Patent Document 1 is a method in which a release agent supplied from a release agent supply device and air (pressure air) supplied from an air source are mixed in a mixing block. However, in order to increase the homogeneity of the release agent, a mixing valve is placed in front of the mixing block, and a method of guiding the release agent mixed with air to the mixing block with this mixing valve is also being studied. . The mixing block of this system is provided with a release agent introduction flow path for introducing a release agent from the mixing valve and a release agent introduced from the mixing valve through the release agent introduction flow path in the nozzle unit. And a release agent distribution channel leading to the plurality of spray tubes formed.

Conventionally, as this kind of mixing block, as shown in FIG. 23, a release agent introduction channel 201 having a circular cross-sectional shape, and an upward-facing core having a depth larger than the diameter of the release agent introduction channel 201 are used. A release agent distribution flow path 202 having a cross-sectional shape of the shape, and the release agent introduction flow path 201 is disposed at an intermediate position in the depth direction of the release agent distribution flow path 202. Proposed.
No. 3-9817

  However, in this mixing block, a step 203 is provided between the release agent introduction channel 201 and the wall surface of the release agent distribution channel 202, and the bottom surface 202a and the wall surface 202b of the release agent distribution channel 202 are provided. Since the liquid release agent is likely to remain in the portion of the step 203 and the corners of the bottom surface 202a and the wall surface 202b even after the spraying process is completed, and for the drying performed after the spraying process is completed. In this air blowing process, since the release agent is continuously sprayed, a series of spraying processes including the air blowing process cannot be completed in a short time.

  The present invention has been made in view of the problems of the prior art, and the object of the present invention is to prevent the release agent from remaining in the release agent distribution flow path after the end of the spraying process. An object of the present invention is to provide a release agent spraying device having a mixing block capable of completing a process in a short time.

  In order to achieve this object, the present invention firstly mixes a fluid circuit box containing a release agent supply device and an air supply device, and a release agent and air supplied from the fluid circuit box. A mixing valve, a mixing block for distributing a release agent mixed with air by the mixing valve, and the release agent distributed by the mixing block on a mold surface of a mold provided in a die casting machine A nozzle unit for spraying, a moving mechanism for moving the nozzle unit to a predetermined position between the opened molds and a predetermined position outside the mold, and a stand for supporting each part of the apparatus In the release agent spray apparatus, the mixing block includes a release agent introduction flow path for introducing a release agent of air and a release agent mixed with air by the mixing valve, and the release agent. A release agent distribution channel that guides the release agent introduced from the mixing valve through the agent introduction channel to a plurality of spray pipes provided in the nozzle unit, and the release agent introduction channel And the release agent distribution flow path at least partially communicated with each other without a step, and the release agent distribution flow path has a bottom surface, a wall surface, and a curved surface that smoothly connects both the surfaces. It was configured to be.

  According to such a configuration, since at least a part of the release agent introduction flow path and the release agent distribution flow path communicate with each other without a step, it is difficult for the release agent to remain between these flow paths. Since the release agent flows smoothly from the release agent introduction flow path into the release agent distribution flow path, it is possible to suppress the release agent remaining in the release agent distribution flow path. In addition, since the release agent distribution channel is composed of a bottom surface, a wall surface, and a curved surface that smoothly connects both of these surfaces, the mold release at the corner between the bottom surface and the wall surface constituting the release agent distribution channel Residue of the agent can also be suppressed.

  Secondly, in the first release agent spraying apparatus, the curvature radius of the curved surface is 5 mm or more.

  According to experiments, when a curved surface having a radius of curvature of 5 mm or more is formed between the bottom surface and the wall surface constituting the release agent distribution flow path, the residual release agent in the portion can be almost completely eliminated.

  The release agent spray apparatus of the present invention communicates at least a part of the release agent introduction flow path and the release agent distribution flow path without having a step, and between the bottom surface and the wall surface of the release agent distribution flow path. Since the curved surface is provided, the liquid release agent hardly remains in the mixing block, and the time required for performing the spraying process can be shortened. Therefore, the shot cycle of the die casting machine can be shortened and the productivity of the cast product can be increased.

  First, the external configuration and operation of the release agent spray apparatus according to the embodiment will be described with reference to FIGS. 1 and 2. FIG. 1 is a perspective view of a release agent spray device according to the embodiment, and FIG. 2 is a front view of the release agent spray device according to the embodiment equipped with hoses.

  As shown in these drawings, the release agent spray device of this example includes a stand 1 that is detachably installed in a die casting machine, a rotational movement mechanism 2 attached on the stand 1, and the rotational movement mechanism 2. A horizontal movement mechanism 3 mounted on the top, a vertical movement mechanism 4 connected to the tip of the horizontal movement mechanism 3, a manifold 5 attached to the vertical movement mechanism 4, and mixing valves 6a, 6b, 6c, 6d The mixing block 7 and the nozzle unit 8, the fluid circuit box 9 and the electric circuit box 10 mounted on the horizontal movement mechanism 3, and the hose 11 for connecting the fluid circuit box 9 and each part of the apparatus are mainly constituted. It is driven by a command signal from a controller (not shown) provided in the die casting machine.

  In order to prevent interference between equipment such as a core provided in the die casting machine and the spray pipe 82 provided in the nozzle unit 8, the rotary moving mechanism 2 has a nozzle unit within a required angle range with respect to the stand 1. 8 by turning the direction of the air (pressure air) supplied from the fluid circuit box 9 to the turning air cylinder 45 (see FIGS. 5 to 7) provided in the rotational movement mechanism 2. The nozzle unit 8 is turned in the direction of. The horizontal movement mechanism 3 adjusts the distance between the tip of the spray tube 82 provided in the nozzle unit 8 and the mold surface of the fixed side mold and the movable side mold in the mold open state. The nozzle unit 8 is horizontally moved in a predetermined direction according to the rotation direction of the handle 57 provided. The vertical movement mechanism 4 inserts a nozzle unit 8 between the fixed side mold and the movable side mold in the mold open state and inserts the nozzle unit 8 between the fixed side mold and the movable side mold. The height position is adjusted, and the nozzle unit 8 is raised or lowered by switching the direction of the air supplied to the lifting air cylinder 62.

  Before the spraying process, the rotational movement mechanism 2 turns the nozzle unit 8 to a position where the equipment such as the core and the spray pipe 82 do not interfere with each other. Further, the horizontal movement mechanism 3 is configured so that the distance between the tip of the spray tube 82 and the mold surface of the fixed mold and the movable mold in the mold open state is a predetermined distance. Adjust the direction position. Further, the vertical movement mechanism 4 raises the nozzle unit 8 to a position where it does not interfere with the fixed side mold and the movable side mold. When the spraying process is started, first, the rotational movement mechanism 2 is driven, and the nozzle unit 8 is turned until the spray pipe 82 reaches an intermediate position between the fixed side mold and the movable side mold in the mold open state. . Next, the vertical movement mechanism 4 is driven, and the nozzle unit 8 is lowered until the tip of the spray tube 82 reaches a predetermined height position with respect to the fixed side mold and the movable side mold. Thereby, the front-end | tip part of the spray pipe | tube 82 is set to a predetermined position with respect to each metal mold | die surface. In the spraying process, the release agent and air supplied from the fluid circuit box 9 via the manifold 5 are mixed by the mixing valves 6a, 6b, 6c and 6d and the mixing block 7, and the release agent mixed with air is mixed. An injection step of selectively blowing only a necessary portion of the mold surface and blowing air supplied from the fluid circuit box 9 through the manifold 5 to a portion of the mold surface which should not be sprayed with the mold release agent; And a drying process in which only air is blown onto the front surface of the mold surface. After the spray process is completed, the nozzle unit 8 is returned to the retracted position in the reverse order.

  Next, the configuration of each part of the apparatus will be described with reference to FIGS. 3 is a longitudinal sectional view of the stand 1, FIG. 4 is a plan view of the stand 1, FIG. 5 is a front view showing the configuration and assembly state of the stand 1, the rotational movement mechanism 2, and the horizontal movement mechanism 3. 7 is a side view showing the configuration and assembly state of the rotational movement mechanism 2 and the horizontal movement mechanism 3, FIG. 7 is a bottom view showing the configuration and assembly state of the stand 1, the rotational movement mechanism 2 and the horizontal movement mechanism 3, and FIG. FIG. 9 is a front view showing the assembled state of the mixing valves 6a, 6b, 6c and 6d, the mixing block 7 and the nozzle unit 8. FIG. 9 shows the assembly of the manifold 5, the mixing valves 6a, 6b, 6c and 6d, the mixing block 7 and the nozzle unit 8. FIG. 10 is a bottom view of the mixing block 7, FIG. 11 is a cross-sectional view taken along line AA in FIG. 10, FIG. 12 is a cross-sectional view taken along line BB in FIG. 14 is a plan view of the nozzle unit 8, FIG. 15 is an exploded perspective view of the fluid circuit box 9, FIG. 16 is a front view showing the arrangement of each device in the fluid circuit box 9, and FIG. 17 is a fluid circuit box. FIG. 18 is a left side view showing the arrangement of each device in the fluid circuit box 9, and FIG. 19 is a rear view showing the arrangement of each device in the fluid circuit box 9. 20 is a plan view showing the arrangement of each device in the fluid circuit box 9, FIG. 21 is a perspective view taken along the line CC of FIG. 16, and FIG. 22 is a circuit diagram of a release agent circuit and an air circuit of the release agent spray device. It is.

  As shown in FIG. 3, the stand 1 is rotatable inside the lower stand body 21, the upper stand body 22, the spacer 23 interposed between the stand bodies 21 and 22, and the upper stand body 22. And a stand shaft 24 attached to.

  A base plate 25 and a rib 26 for reinforcing the base plate 25 are attached to the lower end portion of the lower stand main body 21 by welding, and the upper stand main body 22 is attached to the upper end portion of the lower stand main body 21 via a spacer 23. A connection flange 27 for connection is attached by welding. Bolt through holes (not shown) are opened at the four corners of the base plate 25 and the connection flange 27, respectively, and the lower stand body 21 is penetrated by the bolt through holes opened at the four corners of the base plate 25. The bolt is fastened to a predetermined part of the die casting machine using a bolt.

  Connection flanges 28 connected to the connection flanges 27 via the spacers 23 are attached to the lower ends of the upper stand body 22 by welding. Bolts opened to the connection flanges 27 are provided at the four corners of the connection flanges 28. Bolt through holes corresponding to the through holes are opened. Further, as shown in FIG. 4, a cam follower mounting bracket 29 and an air cylinder joint bracket 30 are fastened to the upper outer surface of the upper stand body 22 by bolts 31, respectively, and an upper surface of the cam follower mounting bracket 29 is A cam follower 32 is rotatably attached. The setting position of the cam follower 32 and the setting position of the cylinder mounting hole 33 opened in the air cylinder joint bracket 30 are set to a point-symmetrical position with respect to the center of the upper stand body 22 as shown in FIG. . Further, bearings 34 for rotatably supporting the stand shaft 24 are set on the inner surface of the upper end portion and the inner surface of the lower end portion of the upper stand body 22.

  The spacer 23 is a flat plate member having a required thickness, and bolt through holes corresponding to the bolt through holes opened in the connection flanges 27 and 28 are opened at the four corners. The lower stand main body 21, the upper stand main body 22 and the spacer 23 are assembled in a state where the respective bolt through holes opened in these members are matched, and are integrally formed by using the bolts 35 penetrating through the respective bolt through holes. It is concluded. Since the spacer 23 is formed in a flat plate shape, the spacer 23 is interposed between the lower stand main body 21 and the upper stand main body 22 so as to pass through the lower stand main body 21 and reach the upper stand main body 22. It is possible to prevent the flow of the release agent in the form of a ring, and to prevent or suppress the corrosion of the bearing 34 due to moisture contained in the release agent. In the example of FIG. 3, only one spacer 23 is provided, but the number of spacers 23 is not limited at all, and a plurality of spacers 23 can be provided or unnecessary. Can be omitted. As described above, the release agent spray device of the present example is configured such that the required number of spacers 23 can be interposed between the lower stand body 21 and the upper stand body 22, so that the height of the stand 1 can be adjusted. It has a high degree of freedom and can be applied to various die casting machines with different mold mounting positions and sizes. Even when the spacer 23 is not used, the setting position of the bearing 34 can be disposed above the lower end portion of the lower stand main body 21, so that the bearing 34 is less likely to touch the mist-like release agent, and the bearing 34 is corroded. Can be suppressed.

  The stand shaft 24 is provided with an attachment portion 36 of the rotational movement mechanism 2 at the upper end thereof, and is rotatably accommodated in the upper stand body 22 via a bearing 34. In this way, the stand body of the release agent spray device has a two-part structure composed of the lower stand body 21 and the upper stand body 22 so that the stand shaft 24 can be rotated inside the upper stand body 22 via the bearing 34. When attached, the overall length of the stand shaft 24 can be shortened compared to the case where the stand body is formed integrally, and the release agent spray device can be reduced in weight.

  As shown in FIGS. 5 to 7, the rotational movement mechanism 2 includes a base plate 41, an air cylinder mounting bracket 43 fastened to the lower surface of the base plate 41 with bolts 42, and two shock absorber mounting brackets 44a and 44b. , A turning air cylinder 45 attached to the air cylinder attachment bracket 43, two shock absorbers 46a and 46b attached to the shock absorber attachment brackets 44a and 44b, and a cover 47 that integrally covers these members. . The rotational movement mechanism 2 is mounted on the mounting portion 36 by fastening the mounting portion 36 formed on the upper end portion of the stand shaft 24 and the base plate 41 with a bolt 48. Further, in this state, the rod 45 a of the turning air cylinder 45 and the air cylinder joint bracket 30 are connected via the connecting fitting 49. Further, the shock absorbers 46a and 46b are adjusted in their setting positions with respect to the base plate 41 so that the movement trajectories of their tip portions pass through the setting positions of the cam followers 32 provided in the upper stand main body 22. The turning air cylinder 45 is expanded and contracted by air supplied from the fluid circuit box 9 through the hoses 11. When the turning air cylinder 45 is expanded and contracted in this manner, the stand shaft 24 and the rotational movement mechanism 2 rotate together with the lower stand main body 21 and the upper stand main body 22. When the stand shaft 24 and the rotational movement mechanism 2 are rotated to a predetermined position, the tip ends of the shock absorbers 46a and 46b come into contact with the cam follower 32, and the rotation of the stand shaft 24 and the rotational movement mechanism 2 is stopped.

  As described above, when the shock absorber mounting brackets 44a and 44b are fastened to the rotational movement mechanism 2 with the bolts 42 and the cam follower mounting bracket 29 is bolted to the upper stand main body 22, the brackets 29, 44a and 44b are connected to the respective support members. As compared with the case of welding, the mounting system of the shock absorbers 46a, 46b and the cam follower 32 can be remarkably enhanced, so that the stop position of the rotary moving mechanism 2 can be accurately regulated. Further, since the shock absorber mounting brackets 44a and 44b and the shock absorbers 46a and 46b are provided on the rotational movement mechanism 2 side, it is easier to set the turning air cylinder 45 than when these members are provided on the upper stand body 22 side. Therefore, the space around the stand can be saved. Further, since the cam follower 32 rotatably attached to the cam follower mounting bracket 29 is used as a stopper for the shock absorbers 46a and 46b, the contact position between the shock absorbers 46a and 46b and the cam follower 32 is accompanied by the rotation of the rotary movement mechanism 2. Even if it changes in the radial direction, the cam follower 32 rotates, so that the frictional force acting between the shock absorbers 46a, 46b and the cam follower 32 is relieved. Therefore, the durability of the shock absorbers 46a and 46b can be enhanced.

  As shown in FIGS. 5 to 7, the horizontal movement mechanism 3 includes a fixed portion 51 formed in a rectangular tube shape, a rectangular tube-shaped movable portion 52 slidably accommodated in the fixed portion 51, and It comprises a feed screw 53 that moves the movable part 52 horizontally with respect to the fixed part 51. One end portion of the fixing portion 51 is provided with an attachment portion 54 for a feed screw 53, and the other end is an open end. On the other hand, a screwing portion 55 of a feed screw 53 is provided at one end portion of the movable portion 52, and a connection flange 56 of the vertical movement mechanism 4 is provided at the other end. The feed screw 53 is rotatably attached to the attachment portion 54, and the screw portion is screwed to the screwing portion 55. A handle 57 is attached to the end of the feed screw 53. Therefore, by rotating the handle 57, the movable part 52 can be moved forward and backward in a horizontal plane with respect to the fixed part 51.

  As shown in FIGS. 1 and 2, the vertical movement mechanism 4 is attached to the support bracket 61 connected to a connection flange 56 provided at the tip of the movable portion 52 of the horizontal movement mechanism 3 and the support bracket 61. The elevating air cylinder 62, the manifold holding plate 63 attached to the rod 62 a of the elevating air cylinder 62, the manifold 5 attached to the manifold holding plate 63, and four mixing valves attached to the manifold 5 6a, 6b, 6c, 6d and the mixing block 7, and the nozzle unit 8 attached to the mixing block 7.

  The elevating air cylinder 62 is attached to the support bracket 61 with the rod 62a facing downward, and is expanded and contracted by the air supplied from the fluid circuit box 9 through the hoses 11, and the manifold 5, the mixing valves 6a, 6b, 6c, 6d, the mixing block 7 and the nozzle unit 8 are moved up and down integrally. The movable range of the lifting air cylinder 62 is determined by a limit switch setting position (not shown).

  The manifold 5 has a release agent flow path and an air flow path for supplying the release agent and air supplied from the fluid circuit box 9 through the hoses 11 to the mixing valves 6a, 6b, 6c, 6d and the mixing block 7. An L-shaped mounting block 64 for mounting the mixing valves 6a, 6b, 6c, 6d and the mixing block 7 is formed on the lower surface thereof so as to face each other at a predetermined interval. A screw hole (not shown) is formed in the horizontal portion of the mounting block 64.

  The mixing valves 6a, 6b, 6c, and 6d mix a release agent and air supplied from the fluid circuit box 9 through the hoses 11 at a preset ratio to generate a mist-like release agent. In this example, as shown in FIGS. 8 and 9, two are attached to both the left and right sides of the mixing block 7. Between the mixing valves 6a, 6b, 6c, 6d and the mixing block 7, an O-ring (not shown) is provided.

  The mixing block 7 uses a mist-like release agent (release agent between release agent and air) generated by the mixing valves 6a, 6b, 6c and 6d and air supplied from the fluid circuit box 9 as a nozzle unit. In this example, as shown in FIG. 10, an air distribution channel 71 is provided in the center of the mounting surface of the nozzle unit 8, and on both sides thereof, as shown in FIG. A release agent distribution channel 72 is provided. Oval O-ring setting grooves 73 are formed around the air distribution channel 71 and the release agent distribution channel 72, respectively. As shown in FIGS. 10 and 11, the air distribution channel 71 has an oval planar shape and a cross-sectional shape formed in a downward U shape, and three air inlets 74 are formed on the bottom surface thereof. It is open. It is not necessary to provide a curved surface or inclined surface more than the chamfer necessary for processing between the bottom surface 71a and the wall surface 71b constituting the air distribution channel 71. As shown in FIG. 11, the bottom surface 71a and the wall surface 71b are provided. A shape that is substantially orthogonal to each other through the corners can be used. On the other hand, as shown in FIGS. 10 to 12, the release agent distribution flow path 72 has an oval planar shape and a cross-sectional shape formed in a downward U shape, and a cross-sectional shape at both ends in the longitudinal direction. A release agent introduction flow path 75 having a circular shape is provided. As shown in FIG. 12, the release agent introduction channel 75 is formed so that a part of the circumference is in contact with the bottom surface 72 a of the release agent distribution channel 72. A part of the mold material introduction channel 75 communicates with a step without having a step. Further, between the bottom surface 72a and the wall surface 72b of the release agent distribution channel 72, as shown in FIGS. 11 and 12, a curved surface 72c that smoothly connects these surfaces is provided. The curvature radius of the curved surface 72c is desirably 5 mm or more.

  As described above, when the release agent distribution channel 72 and the release agent introduction channel 75 are communicated without having a step, the release from the release agent introduction channel 75 into the release agent distribution channel 72 is performed. The flow of the agent can be made smooth. Further, when a curved surface 72c that smoothly connects these surfaces is provided between the bottom surface 72a and the wall surface 72b of the release agent distribution channel 72, the release agent is stopped when the mixing valves 6a, 6b, 6c, and 6d are stopped. Since the release agent does not accumulate between the bottom surface 72a and the wall surface 72b of the distribution flow path 72, the supply of the release agent from the mixing block 7 to the nozzle unit 8 can be made smooth. Therefore, when the mixing valves 6a, 6b, 6c, and 6d are stopped, the release agent in the mixing block 7 can be quickly discharged to the nozzle unit 8 and is performed after the release agent injection process is completed. The release agent staying in the mixing block 7 in the drying process does not flow into the spray pipe 82, and a series of spray processes including the injection process and the drying process of the release agent can be performed with high efficiency, and die casting The shot cycle of the cast product by the machine can be accelerated. According to experiments, by forming a curved surface with a radius of curvature of 5 mm or more between the bottom surface 72a and the wall surface 72b of the release agent distribution flow path 72, it is possible to completely eliminate the residual release agent in the portion. it can.

  As shown in FIGS. 13 and 14, the nozzle unit 8 includes a holding plate 81 attached to the lower surface of the mixing block 6 and a spray tube 82 having a predetermined length with one end fixed to the holding plate 81. The spray tube 82 is for air release pipes 82 a disposed opposite to the air distribution flow path 71 of the mixing block 7 and for release agent disposed opposite to the release agent distribution flow path 72 of the mixing block 7. It consists of a set with the spray tube 82b. Each of these spray pipes 82a and 82b is formed with a copper pipe, and when used, the distal end portion thereof is appropriately curved and deformed so as to individually face a required portion of the mold surface.

  The mixing block 7 and the nozzle unit 8 are positioned so that the air distribution flow path 71 and the air spray pipe 82a, and the release agent distribution flow path 72 and the release agent spray pipe 82b face each other. Joining is performed via an O-ring (not shown) set in the setting groove 73. As shown in FIG. 8, this joined body is inserted between the manifold 5 and a horizontal portion of a mounting block 64 provided on the lower surface thereof, and a bolt 65 is screwed into a screw hole formed in the horizontal portion. Is fixed to the manifold 5.

  The fluid circuit box 9 is a box-shaped container in which various devices constituting the release agent circuit 101 and various devices constituting the air circuit 111 are accommodated. As shown in FIG. A bottom plate 91 having a rectangular shape, a U-shaped angle 92 standing upright from both ends of one side of the bottom plate 91, and a cover member that is detachably attached to the angle 92 and constitutes the front, top, and side surfaces of the container 93 and a first back plate 94 and a second back plate 95 which are detachably attached to the angle 92 and constitute the back of the container. The first and second back plates 94, 95 are, for example, regulators. An opening 96 is opened to allow the adjustment unit and the pressure gauge indicating unit to face the outside. The bottom plate 91 is fixed with a release agent introduction tube 97 for supplying a release agent and air into the fluid circuit box 9 from the outside, a connection portion 99a of an air introduction tube 98 (see FIG. 2), and an air manifold 99b. A connecting portion 100 of a hose 11 for supplying a release agent and air from the fluid circuit box 9 to each part of the device is fixed to the upper end portion of 92. The devices constituting the release agent circuit 101 and the air circuit 111 are connected between the connection portions 99a and 100 and the air manifold 99b in the arrangement shown in FIGS. Each of these devices are connected to each other via a required connecting member so that they can be disassembled and assembled independently.

  Thus, the connection part 99a of the release agent introduction pipe 97 and the air introduction pipe 98 and the air manifold 99b are fixed to the bottom plate 91, and the connection part 100 of the hoses 11 is fixed to the angle 92. When the devices constituting the release agent circuit 101 and the air circuit 111 are connected between 100, the cover member 93 and the first and second back plates 94, 95 are removed from the bottom plate 91 and the angle 92 as needed. Can do. Further, since the connection part 99 of the release agent introduction pipe 97 and the air introduction pipe 98 is fixed on the bottom plate 91 and the connection part 100 of the hoses 11 is fixed to the angle 92, the release agent circuit 101 and the air circuit. When performing the maintenance of 111, it is not necessary to remove the release agent introduction pipe 97, the air introduction pipe 98, and the hoses 11 from the fluid circuit box 9. Therefore, maintenance of the release agent circuit 101 and the air circuit 111 can be facilitated. Furthermore, when each device constituting the release agent circuit 101 and the air circuit 111 is connected via a required connecting member so that it can be disassembled and assembled independently, each device is detached from the fluid circuit box 9 for repair or Can be exchanged. Therefore, with this configuration, maintenance of the release agent circuit 101 and the air circuit 111 can be made easier.

  The release agent circuit 101 and the air circuit 111 are represented by a circuit diagram shown in FIG. That is, the release agent circuit 101 is included in a release agent that is pressure-fed from a release agent tank (not shown) with a release agent adjusted to a predetermined concentration with water, and a release agent that is pressure-fed from the supply means 102. A strainer 103 that removes foreign matter, a mixing valve 6a, 6b, 6c, and 6d that mixes a release agent that has passed through the strainer 103 and air that is supplied from an air circuit 111 described below, and a pipe line 104 that connects these valves Consists of

  On the other hand, the air circuit 111 includes an air filter 113 that removes foreign matter contained in the air supplied from the air source 112, and a turning air circuit 114 that drives the turning air cylinder 45 by the air that has passed through the air filter 113. The elevating air circuit 115 that drives the elevating air cylinder 62 by the air that has passed through the air filter 113 and the air that has passed through the air filter 113 are supplied to the release agent distribution channels 72 a and 72 b formed in the mixing block 7. The spray air circuit 116 and the drying air circuit 117, the air blow air circuit 118 that supplies the air that has passed through the air filter 113 to the air distribution passage 71 formed in the mixing block 7, and the swivel air circuit 114 The pressure of the supplied air and the pressure of the air supplied to the raising / lowering air circuit 115 are standard pressure ( For example, a first regulator 119a held at 0.4 Mpa), a second regulator 119b holding the pressure of the air supplied to the spray air circuit 116 at a standard pressure (for example, 0.2 Mpa), and a drying A third regulator 119c for holding the pressure of the air supplied to the air circuit 117 and the pressure of the air supplied to the air circuit for air blow 118 at a standard pressure (for example, 0.4 Mpa), and the first to third regulators It consists of pressure gauges 120a, 120b, 120c attached to 119a, 119b, 119c.

  The turning air circuit 114 includes a turning direction switching valve 121, an air supply pipe 122 that supplies air adjusted to a standard pressure by the regulator 119a to the air supply port of the turning direction switching valve 121, and a turning direction switching. Air discharge pipes 123 and 124 connected to two air discharge ports provided in the valve 121, a turning conduit 125 for supplying air to the rod chamber of the turning air cylinder 45, and a bottom of the turning air cylinder 45 A swirl return pipe 126 for supplying air to the chamber, speed controllers 127 and 128 provided in the swivel duct 125 and the swivel return pipe 126, and tip portions of the air discharge pipes 123 and 124, respectively. The silencers 129 and 130 are provided.

  Since the turning air circuit 114 is configured in this way, when the turning direction switching valve 121 is switched to the turning side by a command signal from a controller (not shown), the air maintained at the standard pressure by the regulator 119a is Through the turning direction switching valve 121 and the speed controller 127, the air is supplied to the rod chamber of the turning air cylinder 45, the turning air cylinder 45 contracts, and the rotational movement mechanism 2 turns in a predetermined direction. At this time, the air discharged from the bottom chamber of the turning air cylinder 45 is discharged to the outside through the speed controller 128, the turning direction switching valve 121, the air discharge pipe 124 and the silencer 130. When the rotational movement mechanism 2 is swung in one direction and the swivel direction switching valve 121 is switched to the swivel return side by a command signal from a controller (not shown), the air maintained at the standard pressure by the regulator 119a is The air is supplied to the bottom chamber of the turning air cylinder 45 through the turning direction switching valve 121 and the speed controller 128, the turning air cylinder 45 extends, and the rotational movement mechanism 2 returns to the original position. At this time, the air discharged from the rod chamber of the turning air cylinder 45 is discharged outside through the speed controller 127, the turning direction switching valve 121, the air discharge pipe 123, and the silencer 129.

  The lift air circuit 115 includes a lift direction switching valve 131, an air supply pipe 132 for supplying air maintained at a standard pressure by the regulator 119a to the air supply port of the lift direction switching valve 131, and a lift direction switching valve. 131, air exhaust pipes 133 and 134 connected to two air exhaust ports provided in 131, a silencer 135 provided at the tip of the air exhaust pipe 133, and a silencer provided at the tip of the air exhaust pipe 134, respectively. A throttle valve 136, a rising pipe 137 for supplying air to the rod chamber of the lifting air cylinder 62, a lowering pipe 138 for supplying air to the bottom chamber of the lifting air cylinder 62, and the rising pipe 137 are provided. The descending speed adjusting valve 139, the ascending speed adjusting shuttle valve 140 provided in the descending pipe line 138, and the outlet pipe of the descending speed adjusting valve 137 A silencer with throttle valve 141 provided, consisting of the silencer with throttle valve 142 provided in the outlet line of the shuttle valve 138.

  Since the lifting air circuit 115 is configured in this manner, when the lifting direction switching valve 131 is switched to the rising side by a command signal from a controller (not shown), the air maintained at the standard pressure by the regulator 119a is The air is supplied to the rod chamber of the elevating air cylinder 62 through the elevating direction switching valve 131, the elevating air cylinder 62 is contracted, and the vertical moving mechanism 4 is raised. At this time, the air discharged from the lifting air cylinder 62 is discharged to the outside through the shuttle valve 140, the descending pipe line 138, the lifting direction switching valve 131, the air discharge pipe 133 and the silencer 135, and the vertical movement mechanism 4. Is the speed adjusted by the shuttle valve 140. When the vertical movement mechanism 4 is in the raised position and the elevation direction switching valve 131 is switched to the lower side by a command signal from a controller (not shown), the air maintained at the standard pressure by the regulator 129a is switched to the elevation direction. The valve 131, the descending pipe line 138, and the shuttle valve 140 are supplied to the bottom chamber of the lifting / lowering air cylinder 62, the lifting / lowering air cylinder 62 is extended, and the vertical movement mechanism 4 is lowered. At this time, the air discharged from the lifting air cylinder 62 is discharged to the outside through the ascending pipe line 137, the lifting direction switching valve 131 and the throttle valve 136 with a silencer. The low speed adjusted by the attached throttle valve 136 is obtained. When the descending speed adjustment valve 139 is switched to the high speed descending side by a command signal from a controller (not shown) when the vertical moving mechanism 4 is descending, the air discharged from the rod chamber of the ascending / descending air cylinder 62 is the ascending pipeline 137. The lowering speed adjusting valve 139 and the throttle valve 141 with a silencer provided in its outlet pipe are discharged to the outside, and the lowering speed of the vertical movement mechanism 4 becomes a high speed adjusted by the throttle valve 141 with a silencer. .

  The spray air circuit 116 includes a first circuit 151 for intermittently supplying the spray air supplied to the mixing valves 6a and 6b, and a second circuit 152 for intermittently supplying the spray air supplied to the mixing valves 6c and 6d. .

  The first circuit 151 includes a first spray direction switching valve 153, an air supply pipe 154 that supplies air maintained at a standard pressure by the regulator 119b to an air supply port of the first spray direction switching valve 153, Air discharge pipes 123 and 124 respectively connected to two air discharge ports provided in the first spray direction switching valve 153, and a spray pipe line 155 for supplying air to the rod chambers of the mixing valves 6a and 6b. The spray valve 156 guides the air discharged from the bottom chambers of the mixing valves 6 a and 6 b to the first spray direction switching valve 153.

  The second circuit 152 has the same configuration, and the air maintained at the standard pressure by the second spray direction switching valve 157 and the regulator 119b is supplied to the air supply port of the second spray direction switching valve 157. Air is supplied to the air supply pipe 158 to be supplied, the air discharge pipes 123 and 124 connected to the two air discharge ports provided in the second spray direction switching valve 157, and the rod chambers of the mixing valves 6c and 6d. And a spray stop pipe 160 that guides the air discharged from the bottom chambers of the mixing valves 6c and 6d to the second spray direction switching valve 157.

  Since the spray air circuit 116 is configured as described above, when the first and second spray direction switching valves 153 and 157 are switched to the spray side by a command signal from a controller (not shown), the regulator 119b sets the standard. The air maintained at the pressure passes through the first and second spray direction switching valves 153 and 157 and the first and second spray lines 155 and 159, and the rods of the mixing valves 6a, 6b, 6c, and 6d. Supplyed to the chamber, the mixing valves 6a, 6b, 6c, 6d are opened at an opening corresponding to the pressure of the supplied air. As a result, in the mixing valves 6a, 6b, 6c, and 6d, the release agent supplied through the release agent circuit 101 and the air supplied through the spray air circuit 116 are mixed to form a mist. Then, the mist-like mold release agent is sprayed onto the mold surface through the spray tube 82, and the mold release agent is selectively sprayed on a predetermined portion of the mold surface. When a command signal from a controller (not shown) is cut off, the first and second spray direction switching valves 153 and 157 automatically return to the spray stop state.

  The drying air circuit 117 includes a first air supply pipe 161 that supplies the air maintained at the standard pressure by the regulator 119c to the first release agent distribution flow path 72a formed in the mixing block 7, and the first air supply pipe 161. A second shutoff valve 162 provided in the air supply pipe 161 and a second release agent distribution flow path 72b formed in the mixing block 7 for supplying the air maintained at the standard pressure by the regulator 119c. Air supply pipe 163 and a second shut-off valve 164 provided in the second air supply pipe 163.

  Since the drying air circuit 117 is configured as described above, when the first and second spray direction switching valves 153 and 157 return to the spray stop state, the first and second spray circuit 117 are controlled by a command signal from a controller (not shown). When the second shutoff valves 162 and 164 are switched to the open side, the air maintained at the standard pressure by the regulator 119c is sprayed from the spray pipe 82 onto the mold surface, and the release agent sprayed on the mold surface is dried. . When a command signal from a controller (not shown) is cut off, the first and second shutoff valves 162 and 164 automatically return to the shutoff state, and the injection of air from the release agent spray pipe 82b is stopped. The

  The air circuit 118 for air blow includes an air supply pipe 165 that supplies air maintained at a standard pressure by the regulator 119c to an air distribution passage 71 formed in the mixing block 7, and a shut-off valve provided in the air supply pipe 165. 166.

  Since the air circuit for air blow 118 is configured as described above, when the shutoff valve 166 is switched to the open side by a command signal from a controller (not shown) when spraying the mold release agent on the mold surface, the air spray Air is jetted from the tube 82a onto the mold surface, and adhesion of the release agent to unnecessary portions can be prevented. When a command signal from a controller (not shown) is cut off, the shutoff valve 166 automatically returns to the shutoff state, and the injection of air from the spray tube 82a is stopped.

  The electric circuit box 10 stores a circuit for supplying power to an electric device such as a limit switch provided in the release agent spray device.

  The present invention relates to the configuration of the mixing block 7, and other parts constituting the release agent spray device are not limited to the configuration of the above embodiment, and can be arbitrarily changed in design. it can.

It is a perspective view of the mold release agent spray apparatus which concerns on embodiment. It is a front view of the state equipped with the hose of the mold release agent spray apparatus which concerns on embodiment. It is a longitudinal cross-sectional view of a stand. It is a top view of a stand. It is a front view which shows the structure and assembly state of a stand, a rotational movement mechanism, and a horizontal movement mechanism. It is a side view which shows the structure and assembly state of a stand, a rotational movement mechanism, and a horizontal movement mechanism. It is a bottom view which shows the structure and assembly state of a stand, a rotational movement mechanism, and a horizontal movement mechanism. It is a front view which shows the assembly state of a manifold, a mixing valve, a mixing block, and a nozzle unit. It is a side view which shows the assembly state of a manifold, a mixing valve, a mixing block, and a nozzle unit. It is a bottom view of a mixing block. It is AA sectional drawing of FIG. It is BB sectional drawing of FIG. It is a front view of a nozzle unit. It is a top view of a nozzle unit. It is a disassembled perspective view of a fluid circuit box. It is a front view which shows the arrangement | sequence of each apparatus in a fluid circuit box. It is a right view which shows the arrangement | sequence of each apparatus in a fluid circuit box. It is a left view which shows the arrangement | sequence of each apparatus in a fluid circuit box. It is a rear view which shows the arrangement | sequence of each apparatus in a fluid circuit box. It is CC arrow line angle view of FIG. It is the DD arrow angle view of FIG. It is a circuit diagram of the mold release agent circuit and air circuit of a mold release agent spray apparatus. It is sectional drawing of the mixing block which concerns on a prior art example.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Stand 2 Rotation movement mechanism 3 Horizontal movement mechanism 4 Vertical movement mechanism 5 Manifold 6a, 6b, 6c, 6d Mixing valve 7 Mixing block 8 Nozzle unit 9 Fluid circuit box 10 Electric circuit box 11 Hose 71 Air distribution flow path 71a Bottom 71b Wall surface 72 Release agent distribution flow path 72a Bottom surface 72b Wall surface 72c Curved surface 73 O-ring setting groove 74 Air introduction port 75 Release agent introduction flow path

Claims (2)

A fluid circuit box containing a release agent supply device and an air supply device, a mixing valve for mixing the release agent and air supplied from the fluid circuit box, and a separation valve mixed with air by the mixing valve A mixing block that distributes the mold, a nozzle unit that sprays the mold release agent distributed in the mixing block onto a mold surface of a mold provided in a die casting machine, and the nozzle unit that is opened In a release agent spray apparatus comprising a moving mechanism that moves to a predetermined position between molds and a predetermined position outside the mold, and a stand that supports each part of the apparatus,
The mixing block includes a release agent introduction channel for introducing a release agent mixed with air by the mixing valve, and the release agent introduced from the mixing valve via the release agent introduction channel. A release agent distribution flow path that guides a plurality of spray pipes provided in the nozzle unit, and at least a part of the release agent introduction flow path and the release agent distribution flow path have a step. The release agent spraying device is characterized in that the release agent distribution flow path has a bottom surface, a wall surface, and a curved surface that smoothly connects both the surfaces.   The mold release agent spray apparatus according to claim 1, wherein a curvature radius of the curved surface is 5 mm or more.

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