Resin residue removing device

Abstract

Provided is a resin scum removing device capable of appropriately removing resin scum adhering to the lower surface of a mold of a molding device. According to the present invention, a resin scum removing device removes resin scum adhering to the lower surface of a mold of a molding device, and has a moving unit configured to move a resin scum removing head between a position offset laterally from directly below the mold and the directly below position, and in the directly below position, between a position distanced from the lower surface and a position close to the lower surface, the resin scum removing head being configured to be able to remove resin scum adhering to the lower surface by moving along the lower surface.

Description

Technical Field

[0001] This invention relates to a resin residue removal device for removing resin residue adhering to the mold of a molding device. Background Technology

[0002] Conventionally, there are techniques for manufacturing molded articles by blow molding a preform ejected from a molding apparatus. For example, Patent Document 1 discloses a method of ejecting a cylindrical preform from a gap in a mold (casting mold) formed in a molding apparatus and allowing it to hang down, then blow molding it in a metal mold to obtain a hollow molded article. Patent Document 2 discloses a method of manufacturing a resin panel by ejecting a resin sheet from a T-mold of a pair of molding apparatuses and allowing it to hang down, then closing it together with a core material in a metal mold.

[0003] Existing technical documents

[0004] Patent documents

[0005] Patent Document 1: Japanese Patent Application Publication No. 2010-214815

[0006] Patent Document 2: Japanese Patent Application Publication No. 2019-098560 Summary of the Invention

[0007] The problem the invention aims to solve

[0008] However, after the molten resin is pushed out of the mold gap, resin residue remains near the gap. This residue adheres to the molding device as resin sludge, which may have an adverse effect on the molding process.

[0009] The present invention was made in view of this situation, and provides a resin residue removal device capable of properly removing resin residue adhering to the lower surface of a mold of a molding apparatus.

[0010] means for solving problems

[0011] According to the present invention, a resin residue removal apparatus is provided for removing resin residue adhering to the lower surface of a mold of a molding apparatus. The apparatus includes a moving unit and a resin residue removal head. The moving unit is configured to move the resin residue removal head between a lateral position deviating from directly below the mold and a position directly below the mold, and within the position directly below the mold, between a position far from the lower surface and a position close to the lower surface. The resin residue removal head is configured to remove resin residue adhering to the lower surface by moving along the lower surface.

[0012] According to the present invention, the moving unit is configured to move the resin residue removal head between a side position and a position directly below, and between a position away from and a position close to, so that the resin adhering to the lower surface of the mold can be removed without damaging the mold.

[0013] The following describes various embodiments of the present invention. These embodiments can be combined with each other.

[0014] Preferably, the moving unit has a support arm that supports the resin residue removal head with its front end side, and has at least one of the following structures (1) and (2).

[0015] (1) A structure in which the resin residue removal head moves between the lateral position and the directly below position by moving the support arm in the horizontal direction.

[0016] (2) A structure that moves the resin residue removal head between the distant position and the approach position by causing the support arm to rock in a seesaw-like manner.

[0017] Preferably, the moving unit has a guide unit, a sliding member, and a linear drive unit. The support arm is supported by the sliding member. The sliding member slides along the guide unit by being driven by the linear drive unit, thereby moving the resin residue removal head between the directly below position and the side position.

[0018] Preferably, the guide unit extends toward the mold in the lateral position, and the sliding member slides along the guide unit by means of the linear drive unit, thereby the support arm moves forward and backward, and the resin residue removal head moves between the directly below position and the lateral position.

[0019] Preferably, the sliding member has a support shaft for axial support of the support arm and a pressing part for pressing the support arm. The support arm has a pressed part on the side opposite to the resin residue removal head, separated from the support shaft. When the support arm moves forward with the sliding member, the pressed part presses the pressed part from top to bottom, so that the support arm swings in a seesaw shape around the support shaft.

[0020] Preferably, the pressing part is a roller disposed on the support frame that supports the guide unit, and the pressed part is a cam whose upper surface is inclined as it rises toward the rear end of the support arm. When the support arm moves forward with the sliding member, the roller abuts against the upper surface and presses the cam from above to below.

[0021] Preferably, the molding device ejects a cylindrical preform, and an annular slit is formed on the lower surface of the mold to eject the cylindrical preform. The resin residue removal head has a resin residue removal component and a removal driving unit. The resin residue removal component has a facing surface opposite to the lower surface. Driven by the removal driving unit, the resin residue removal component rotates such that the facing surface moves along the slit.

[0022] Preferably, the resin residue removal component is a columnar component that is supported in a self-rotating manner.

[0023] Preferably, the resin residue removal component is a removal blade with a blade-like portion in the rotational direction.

[0024] Preferably, the molding device ejects a sheet-like resin sheet, and a straight slit is formed on the lower surface of the mold to eject the resin sheet. The guide unit is arranged along the long side of the slit. By being driven by the linear drive unit, the sliding member slides along the guide unit, thereby sliding the support arm. The resin residue removal head moves between the lateral position and the directly below position, and then moves along the slit.

[0025] Preferably, the sliding member has a support shaft that provides axial support for the support arm, and the moving unit has a rocking drive unit that causes the support arm to rock in a seesaw-like manner around the support shaft.

[0026] Preferably, the device includes a control unit for controlling the moving unit. When the resin residue removal head is in the farthest position, the control unit uses the linear drive unit to move the resin residue removal head to the position furthest from the side position among the directly below positions. Then, the control unit uses the rocking drive unit to rock the support arm, thereby moving the resin residue removal head to the approach position. Afterward, when the resin residue removal head is in the approach position, the linear drive unit uses the linear drive unit to move the resin residue removal head along the gap toward the side position.

[0027] Preferably, the device includes a cleaning unit for cleaning resin residue adhering to the resin residue removal head.

[0028] Preferably, the cleaning unit has a cooling unit for cooling the resin residue removal head.

[0029] Preferably, the cleaning unit is a tongue-shaped component that wipes off the resin residue adhering to the resin residue removal head as the resin residue removal head moves to the lateral position.

[0030] Preferably, the cleaning unit has a cleaning member that moves along the resin residue removal head to wipe away the resin residue adhering to the resin residue removal head, and an air ejection unit that ejects air toward the cleaning member. Attached Figure Description

[0031] Figure 1 This is a schematic diagram showing the positional relationship between the resin residue removal device 1 of the first embodiment of the present invention and the molding device 100 used thereto to remove resin residue.

[0032] Figure 2 yes Figure 1 An enlarged side view of the resin residue removal device 1.

[0033] Figure 3A yes Figure 1 A front view of the resin slag removal head 4 of the resin slag removal device 1. Figure 3B yes Figure 3A Enlarged view of the L section.

[0034] Figure 4A as well as Figure 4B It is shown Figure 1 A diagram illustrating the rotary drive action of the resin residue removal head 4.

[0035] Figure 5A It is shown Figure 1 A schematic diagram showing the resin slag removal head 4 of the resin slag removal device 1 located at position X2 directly below and far from position Z1. Figure 5B This is a schematic diagram showing the resin residue removal head 4 located at position X2 directly below and close to position Z2.

[0036] Figure 6A as well as Figure 6B It is shown Figure 1 A diagram illustrating the rocking motion of the support arm 34 of the resin residue removal device 1.

[0037] Figure 7 This is an enlarged view showing the cleaning unit 5 (tongue-shaped member 51) installed on the support frame 2.

[0038] Figure 8A as well as Figure 8B This is an explanatory diagram schematically illustrating the operation of the resin residue removal device 1 of a modified example 1-1 of the first embodiment of the present invention.

[0039] Figure 9A as well as Figure 9B This is an explanatory diagram schematically illustrating the operation of the resin residue removal device 1 of the first embodiment of the present invention, variations 1-2.

[0040] Figure 10This is a side view showing the positional relationship between the resin residue removal device 1 of the second embodiment of the present invention and the molding device 100 used thereto to remove resin residue.

[0041] Figure 11 It is shown Figure 10 A top view showing the positional relationship between the resin residue removal device 1 and the molding device 100.

[0042] Figure 12 yes Figure 10 A perspective view of the resin residue removal device 1.

[0043] Figure 13 yes Figure 10 Side view of resin residue removal device 1.

[0044] Figure 14 It is shown Figure 10 A perspective view of the resin slag removal head 4 of the resin slag removal device 1.

[0045] Figure 15 yes Figure 13 A sectional view along line AA.

[0046] Figure 16A It is shown Figure 10 A side view of the configuration of the cleaning unit 5 of the resin residue removal device 1. Figure 16B This is a top view showing the configuration of cleaning unit 5.

[0047] Figures 17A to 17D It is shown Figure 10 A diagram illustrating the movement of the resin residue removal head 4 of the resin residue removal device 1 along the mold 101 of the molding device 100.

[0048] Figure 18A It is shown Figure 10 A schematic diagram showing the resin residue removal head 4 of the resin residue removal device 1 located at a side position X1 and far from position Z1. Figure 18B This is a schematic diagram showing the resin residue removal head 4 located at position X2 directly below and close to position Z2.

[0049] Figure 19 This is an explanatory diagram showing the case where a protrusion 102a is present on the rear edge of the lower surface 102 of the mold 101.

[0050] Figure 20A as well as Figure 20B It is shown Figure 10 A side view of the cleaning unit 5 of the resin residue removal device 1 removing resin residue R attached to the resin residue removal head 4.

[0051] Figure 21A as well as Figure 21B It is shown Figure 10 A top view of the cleaning unit 5 of the resin residue removal device 1 removing resin residue R attached to the resin residue removal head 4.

[0052] Figure 22 This is a side view showing the positional relationship between the resin residue removal device 1 of the second embodiment of the present invention, modified Example 2-1, and the molding device 100 used thereto to remove resin residue.

[0053] Figure 23 This is an explanatory diagram schematically illustrating the operation of the resin residue removal device 1 of the modified example 2-2 of the second embodiment of the present invention.

[0054] Figure 24A This is a top view showing the support arm 34 and the resin residue removal head 4 of the resin residue removal device 1 according to variations 1-3 of the first embodiment of the present invention. Figure 24B It is shown in Figure 24A A side view of the removal blade 142 mounted on the rotating plate 41 of the resin residue removal head 4 via the mounting member 41b. Detailed Implementation

[0055] The embodiments of the present invention will now be described. The various features shown in the embodiments described below can be combined with each other. Furthermore, each feature independently enables the invention to succeed.

[0056] 1. First Implementation Method

[0057] like Figure 1 as well as Figure 2 As shown, the resin residue removal device 1 of the first embodiment of the present invention includes a support frame 2, a moving unit 3, and a resin residue removal head 4. Figure 1 As shown, the resin residue removal device 1 uses the resin residue removal head 4 to remove the resin residue adhering to the lower surface 102 of the mold 101 of the molding device 100.

[0058] In this embodiment, the molding apparatus 100 ejects a cylindrical molten resin 103 (cylindrical preform) from an annular slit (not shown) formed in the mold 101 and allows it to hang down. A hollow molded product is obtained by blow molding the hanging molten resin 103 within a pair of metal molds 104. Furthermore, the resin residue is essentially generated when the cylindrical molten resin 103 separates from the mold 101 side and the metal mold 104 side during mold closing, remaining on the mold 101 side. The various structures of the resin residue removal apparatus 1 will be described in detail below.

[0059] Furthermore, in the following description, the direction in which the resin residue removal head 4 slides is defined as the front-to-back direction, and the direction in which the resin residue removal head 4 moves toward the molding device 100 is defined as the forward direction (refer to...). Figure 1 Additionally, the left and right directions are defined as those perpendicular to the front-back and up-down directions (see reference). Figure 3A as well as Figure 4A Furthermore, in this embodiment, such as Figure 1 As shown, the front-to-back direction is consistent with the mold closing and opening directions of the metal mold 104.

[0060] 1.1 Structure of Resin Sludge Removal Device 1

[0061] <Supporting Frame 2>

[0062] like Figure 2 As shown, the support frame 2 has a ko-shaped frame 21 that is roughly shaped like a ko character when viewed from the side, and a pair of side frames 22 disposed on both sides of the ko-shaped frame 21 in the width direction. The ko-shaped frame 21 has an upper frame 21a, a rear frame 21b, and a lower frame 21c, as shown. Figure 2 As shown, the lower frame 21c is longer than the upper frame 21a.

[0063] The side frame 22 is installed near the front end of the upper frame 21a and the lower frame 21c. For example... Figure 6A as well as Figure 6B As shown, two rollers 23 serving as pressing parts of pressing support arms 34 are provided on the inner side of each side frame 22. Furthermore, the number of rollers 23 is not limited to two per side. Additionally, a pair of side frames 22 support a cleaning unit 5 extending forward from above the U-shaped frame 21. The cleaning unit 5 has a tongue-shaped member 51 at its front end for wiping away resin residue adhering to the columnar member 42 of the resin residue removal head 4.

[0064] In addition, the support frame 2 itself is suspended and supported together with the molding device 100.

[0065] <Moving Unit 3>

[0066] like Figure 1 , Figure 5A as well as Figure 5B As shown, the moving unit 3 moves the resin residue removal head 4 between a position offset from directly below the mold 101 that does not interfere with the molding action and a position capable of removing resin residue adhering to the lower surface 102 of the mold 101. Specifically, as... Figure 2 As shown, the moving unit 3 has a track member 31 as a guide unit, a sliding member 32, a rodless cylinder 33 as a linear drive unit, and a support arm 34. The moving unit 3, which has these structures, is supported by the support frame 2.

[0067] A pair of track members 31 are arranged parallel to each other in the left and right directions on the upper surface of the lower frame 21c of the support frame 2. Each track member 31 slidably supports the sliding member 32 via guide blocks 36. In addition, each track member 31 is located at a side position X1 of the mold 101 (refer to...). Figure 1 The track members 31 extend toward the mold 101. In other words, each track member 31 extends along the normal direction of the annular slit (not shown) formed in the mold 101.

[0068] like Figure 2 As shown, the sliding member 32 is roughly U-shaped in side view and is arranged along the inner side of the U-shaped frame 21 of the support frame 2. The sliding member 32 has an upper plate portion 32a, a rear plate portion 32b, and a lower plate portion 32c. A support shaft 35 for supporting the support arm 34 is arranged at the front of the upper surface of the lower plate portion 32c. In addition, on the lower surface of the lower plate portion 32c, at positions corresponding to the pair of track members 31, guide blocks 36 that can slide relative to the track members 31 are installed at the front and rear ends of the lower plate portion 32c. On the other hand, a rocking limiting portion 37 for limiting the rocking of the support arm 34 is provided at the rear of the lower surface of the upper plate portion 32a.

[0069] The rodless cylinder 33 has a sliding block 33a and a guide rail 33b as a guide member. The sliding block 33a is fixed to the upper part of the upper plate portion 32a of the sliding member 32. The guide rail 33b is provided throughout the sliding direction on the lower part of the upper plate of the support frame 2. Moreover, it is configured such that the sliding member 32 slides along the track member 31 by moving the sliding block 33a along the guide rail 33b.

[0070] The rodless cylinder 33 can be either magnetic or pneumatic. In this embodiment, a rodless cylinder is used as a direct-acting drive unit to reduce the installation area, but an electric cylinder, pneumatic cylinder, or the like can also be used as long as the sliding member 32 can be reciprocated.

[0071] like Figure 3A , Figure 4A as well as Figure 4B As shown, the support arm 34 is a slender plate-shaped component with a generally rectangular cross-section. The end of the support arm 34 on the molding apparatus 100 side, i.e., the front end 34a, supports the resin residue removal head 4. The support arm 34 is supported by a support shaft 35 extending in the left-right direction, which is provided on the sliding member 32, and can rock in a seesaw-like manner around the support shaft 35. Furthermore, as... Figure 2 As shown, on the left and right sides of the support arm 34, at a position rearward than the position supported by the support shaft 35, there are cams 38 that are pressed by the rollers 23 provided on the side frame 22, serving as the pressed part. Figure 6A as well as Figure 6BAs shown, the upper surface of the cam 38 becomes an inclined surface 38a that slopes upward toward the rear end side of the support arm 34.

[0072] <Resin Sludge Removal Head 4>

[0073] like Figure 2 as well as Figures 3A to 4B As shown, the resin residue removal head 4 includes a rotating plate 41, a pair of columnar members 42 serving as resin residue removal components, and a removal drive unit 43. In this embodiment, the resin residue removal head 4 is configured such that by rotating the rotating plate 41 at a position X2 directly below the mold 101 of the molding apparatus 100, the pair of columnar members 42 can remove the resin residue adhering to the lower surface 102 of the mold 101.

[0074] The rotating plate 41 is a slender plate-shaped component with a generally rectangular cross-section. The rotating plate 41 is disposed at the front end 34a of the support arm 34 and is supported by the support arm 34 via the rotating shaft 44.

[0075] A pair of columnar members 42 are rotatably (able to rotate on their own axis) supported by shafts 41a extending upward from both ends of a rotating plate 41. Each columnar member 42 is cylindrical, with its axis oriented vertically. Thus, the circular upper surface of the columnar member 42 becomes a facing surface 42a opposite to the lower surface 102 of the mold 101 (see reference). Figure 3B As for the material of the columnar member 42, a soft metal, such as brass, is preferably used. By using a soft metal, damage to the mold 101 can be prevented even in the event of contact with it. Additionally, as... Figure 3B As shown, the upper edge of the columnar member 42 becomes an expanded diameter portion 42b with an inverted conical shape. Furthermore, the distance between the centers of a pair of columnar members 42 is approximately the same as the diameter of the annular slit formed in the mold 101 (in other words, the diameter of the cylindrical molten resin 103 hanging from the molding device 100).

[0076] The drive unit 43 is removed so that the rotating plate 41 rotates at the front end 34a of the support arm 34. For example... Figure 3A as well as Figure 4A , Figure 4B As shown, the removal drive unit 43 has a rotating shaft 44, a front side pulley 45, a rear side pulley 46, a chain 47, and a rodless cylinder 48.

[0077] like Figure 3A As shown, the rotating shaft 44 is configured such that a rotating plate 41 is fixed to its upper end, and the rotating shaft 44 and the rotating plate 41 rotate integrally. Furthermore, a front-end pulley 45 is fitted into the lower end of the rotating shaft 44 in a manner that prevents relative rotation. The front-end pulley 45 is located below the front end 34a of the support arm 34 and is covered by a front-end cover 34b (see reference). Figure 2 (Coverage). Additionally, a gear for speed increase or decrease can be provided between the front side pulley 45 and the rotating shaft 44.

[0078] The rear-end side pulley 46 is positioned below the rear end 34d of the support arm 34 and is supported by the support arm 34 via a rotation shaft 49. The rear-end side pulley 46 is supported by the rear-end side cover 34c (see reference). Figure 2 Covering. In addition, a chain 47 is wound around the front side pulley 45 and the rear side pulley 46. The two ends of the chain 47 are respectively connected to the sliding block 48b of the rodless cylinder 48, forming a ring structure.

[0079] like Figure 4A as well as Figure 4B As shown, the rodless cylinder 48 has a support plate 48a (see reference). Figure 2 The support plate 48a is configured along its long side in the front-to-back direction and is mounted on the support arm 34. The support plate 48a supports the guide rail 48c. The sliding block 48b is supported by the guide rail 48c and can move along it. One end of the chain 47 is connected to the sliding block 48b, and the other end is connected to it. The guide rail 48c is configured along the long side of the support plate 48a, i.e., in the front-to-back direction. Furthermore, as the sliding block 48b moves rearward and forward along the guide rail 48c, the chain 47 moves, and in conjunction with this, the front pulley 45 and the rear pulley 46 rotate clockwise and counterclockwise, respectively (see reference). Figure 4A as well as Figure 4B ).

[0080] Furthermore, the rodless cylinder 48 can be either magnetic or pneumatic. Additionally, as long as the chain 47 can be moved, an electric cylinder, pneumatic cylinder, etc., can also be used.

[0081] 1.2 Operation of resin residue removal device 1

[0082] Next, refer to Figures 4A to 6BThe operation of the resin residue removal device 1 with the above-described structure will be specifically described in terms of the removal head moving action that moves the resin residue removal head 4 and the resin residue removal action performed using the resin residue removal head 4. Furthermore, these actions are performed at the moment when the molten resin 103 in the molten state is pushed out from the gap (not shown) of the mold 101 of the molding apparatus 100 and the descent of the molten resin 103 from the gap is interrupted. More specifically, for example, after the metal mold 104 is closed, the resin residue removal device 1 is activated at the moment when the ejector (not shown) that removes the molded body after mold closing clamps the molten resin 103 overflowing from the upper part of the metal mold 104. Additionally, these actions are preferably performed once each time the metal mold 104 is closed, but a structure in which they are performed every predetermined number of times or according to the user's instructions may also be adopted.

[0083] Furthermore, each operation of the resin residue removal device 1 is controlled by a control unit (not shown). Specifically, the control unit can be, for example, an information processing device having a CPU, memory (e.g., flash memory), input unit, and output unit. Moreover, the processing performed by the aforementioned structural elements of the control unit, which is composed of an information processing device, is performed by the CPU reading and executing a program stored in the memory. As an information processing device, for example, a personal computer, a PLC (programmable logic controller), or a microcomputer is used. However, it is also possible to configure the control unit to perform some of its functions on a cloud connected via any communication unit.

[0084] <Remove head movement>

[0085] In the resin residue removal device 1 of this embodiment, such as Figure 1 as well as Figure 5A As shown, the moving unit 3 moves the resin residue removal head 4 between a lateral position X1, offset from directly below the mold 101, and a position X2, directly below the mold 101. Additionally, as... Figure 5A as well as Figure 5B As shown, the moving unit 3 moves the resin residue removal head 4 from the position X2 directly below the mold 101 to a position Z1 away from the lower surface 102 and a position Z2 close to the lower surface 102.

[0086] Furthermore, in this embodiment, "directly below position X2" refers to the position inside the cylinder obtained by extending the side of the mold 101 downwards. Additionally, "the resin residue removal head 4 is located at directly below position X2" means that the rotation axis 44 of the resin residue removal head 4 is located inside the cylinder. The movement operation of the removal head of the moving unit 3 will be described in detail below.

[0087] like Figure 1As shown, in this embodiment, when the resin residue removal device 1 is not performing resin residue removal, the resin residue removal head 4 is retracted to a side position X1, and stands idle in a position that does not interfere with the molding operation of the molding device 100. Furthermore, in this state, as... Figure 2 as well as Figure 6A As shown, the support arm 34 of the moving unit 3 connects to the rocking limiting part 37 (see reference 34d) via its rear end 34d. Figure 2 The arm abuts against the support, limiting swaying; specifically, it limits the upward rotation of the rear end 34d about the support shaft 35. Then, in this state, the support arm 34 is slightly tilted downwards at the front end 34a.

[0088] Starting from this state, to remove resin residue, the resin residue removal head 4 is moved by driving the rodless cylinder 33 of the moving unit 3. Specifically, the sliding block 33a of the rodless cylinder 33 slides forward along the guide rail 33b. As the sliding block 33a slides, the sliding member 32 slides forward along the rail member 31, and the support arm 34 supported by the sliding member 32 moves forward. Then, by the forward movement of the support arm 34, the resin residue removal head 4, supported by its front end 34a, moves from the side position X1 toward the directly downward position X2.

[0089] Figure 5A This shows the resin residue removal head 4 moved to the directly below position X2. Figure 5A During this stage, the center of the resin residue removal head 4, i.e., the rotating shaft 44, does not reach directly below the center of the mold 101. Furthermore, the resin residue removal head 4 extends from the side position X1 to... Figure 5A Up to position X2 directly below, the front end 34a remains tilted downwards.

[0090] If from Figure 5A The state further drives the rodless cylinder 33 of the moving unit 3, then as follows: Figures 6A-6B As shown, the support arm 34 advances, and the cam 38 provided on the support arm 34 approaches the roller 23 of the side frame 22. Then, the roller 23 abuts against the inclined surface 38a. Subsequently, if the support arm 34 is advanced further, the roller 23 presses the cam 38 from above downwards, applying a downward force to the cam 38. When a downward force is applied to the cam 38, the support arm 34 rocks in a seesaw-like motion around the support shaft 35, and the front end 34a of the support arm 34 moves upwards. Thus, the support arm 34 becomes horizontal. In other words, in this embodiment, the rodless cylinder 33, the roller 23, and the cam 38 can be considered as a rocking drive unit that causes the support arm 34 to rock in a seesaw-like motion around the support shaft 35.

[0091] Then, as Figure 5A as well as Figure 5BAs shown, by moving upward through the front end 34a, the resin residue removal head 4 moves from the far-away position Z1 to the near-away position Z2 inside the directly below position X2. The center (rotation axis 44) of the resin residue removal head 4 reaches directly below the center of the mold 101 during the phase where the resin residue removal head 4 moves towards the near-away position Z2. In this state, the opposing surface 42a of the columnar member 42 faces each other parallel to the lower surface 102 of the mold 101. The resin residue removal apparatus 1 of this embodiment performs the subsequent resin residue removal operation in this state.

[0092] Furthermore, in the resin residue removal apparatus 1 of this embodiment, even when the support arm 34 is rocked and the resin residue removal head 4 moves toward the approach position Z2, it is preferable to leave a small gap (for example, about 2 mm) between the mold 101 and the columnar member 42 of the resin residue removal head 4. This prevents interference between the rotating columnar member 42 and the mold 101.

[0093] Furthermore, after the resin residue removal operation is completed, the sliding block 33a of the rodless cylinder 33 slides backward along the guide rail 33b via the moving unit 3, causing the sliding member 32 to slide backward and the support arm 34 to retract. Thus, in the opposite direction to the above, the resin residue removal head 4 moves from the approach position Z2 to the distance position Z1, and then moves from the directly below position X2 to the side position X1.

[0094] Furthermore, when the resin residue removal head 4 moves from the directly below position X2 to the side position X1, such as Figure 7 As shown, the tongue-shaped member 51 of the cleaning unit 5, which is supported by the support frame 2 (a pair of side frames 22), wipes away the resin residue attached to the columnar member 42.

[0095] Thus, the moving unit 3 of this embodiment is structured such that the resin residue removal head 4 moves between a lateral position X1 and a directly below position X2 by moving the support arm 34 forward and backward (in the horizontal direction) relative to the support frame 2. Furthermore, the moving unit 3 is structured such that the resin residue removal head 4 moves between a distant position Z1 and a near position Z2 by rocking the support arm 34 in a seesaw-like manner.

[0096] <Resin residue removal process>

[0097] Next, based on Figure 4A as well as Figure 4B The resin residue removal operation of the resin residue removal head 4 will be described. In this embodiment, the resin residue removal operation is the movement of a pair of columnar members 42 along the lower surface 102 of the mold 101. More specifically, the resin residue removal operation is the movement of the opposing surfaces 42a of each columnar member 42 (refer to...) Figure 3B The action of rotating (revolving) along the annular gap of mold 101.

[0098] The resin residue removal action is performed at the resin residue removal head 4. Figure 5B Execute when the device is located at position X2 directly below and close to position Z2.

[0099] In this embodiment, the resin residue removal head 4 drives the removal drive unit 43 to rotate a pair of columnar members 42. Specifically, the sliding block 48b of the rodless cylinder 48 moves along the guide rail 48c in the front-rear direction. As a result, the chain 47 moves with the sliding block 48b, and the front-end pulley 45 rotates. When the front-end pulley 45 rotates, the rotating shaft 44, which is not rotatably engaged with it, also rotates, and the rotating plate 41 fixed to the upper end also rotates. Moreover, by rotating the rotating plate 41, the pair of columnar members 42 supported at both ends of the rotating plate 41 via the shaft 41a also rotate.

[0100] However, in this embodiment, the resin residue removal head 4 is located at Figure 5B In the state shown, directly below position X2 and close to position Z2, the center of the resin residue removal head 4 (the axis of the rotation shaft 44) is located at the center of the mold 101, in other words, directly below the center of the annular slit. Furthermore, the distance between the centers of the pair of columnar members 42 is approximately the same as the diameter of the slit. Therefore, in this embodiment, the columnar members 42 rotate along the annular slit, thereby ejecting the resin residue adhering to the vicinity of the slit.

[0101] Thus, resin residue removal head 4 is located in Figure 5B When the pair of columnar members 42 are rotated in the state of being directly below position X2 and close to position Z2, resin residue adhering to the lower surface 102 of the mold 101, especially near the gaps, can be effectively removed.

[0102] Furthermore, in a single resin residue removal operation, it is preferable to move the pair of columnar members 42 in both clockwise and counterclockwise directions by reciprocating the sliding block 48b of the rodless cylinder 48. This allows the resin residue adhering to the lower surface 102 of the mold 101 to be wiped away from both sides, effectively removing the resin residue.

[0103] Furthermore, while the columnar member 42 rotates (revolves) around the rotation axis 44, the columnar member 42 itself can also rotate (rotate) around the axis 41a. By rotating the columnar member 42 itself, it is possible to prevent the columnar member 42 from being stuck by resin residue.

[0104] In addition, the upper edge of the columnar member 42 becomes an expanded diameter section 42b with an inverted conical shape, which can effectively scrape off the resin residue attached to the mold 101.

[0105] 1.3 Effects

[0106] As described above, the resin residue removal device 1 according to this embodiment uses the drive of the rodless cylinder 33 to move the support arm 34 forward and backward in the horizontal direction, thereby moving the resin residue removal head 4 between the side position X1 and the directly below position X2, and can move the resin residue removal head 4 between the far position Z1 and the near position Z2 by shaking the support arm 34.

[0107] Thus, the resin residue removal device 1 of this embodiment can perform two actions—the forward and backward movement of the support arm 34 and the rocking movement—by driving only one rodless cylinder 33. Moreover, by rocking the support arm 34 at the directly below position X2, interference between the resin residue removal head 4 and the mold 101 can be prevented during the forward and backward movement.

[0108] Furthermore, in the resin residue removal device 1 of this embodiment, resin residue from molds 101 with different diameters can be removed by changing the resin residue removal head 4.

[0109] 1.4 Variations

[0110] The invention described in this embodiment can also be implemented in the following manner.

[0111] <Variation Example 1-1>

[0112] In the above embodiment, the moving unit 3 is configured to move the resin residue removal head 4 between a lateral position X1 and a directly downward position X2 by moving the support arm 34 forward and backward in the horizontal direction. However, the structure for moving the resin residue removal head 4 between the lateral position X1 and the directly downward position X2 is not limited to this. For example, as... Figure 8A as well as Figure 8B As shown, a structure can also be adopted in which the support arm 34 is rotated about a vertically extending rotation axis 39 on the outside of the mold 101 when viewed from above, using any rotary drive unit (not shown), thereby moving the resin residue removal head 4 between a lateral position X1 and a directly below position X2. An electric motor can be cited as an example of a rotary drive unit.

[0113] <Variations 1-2>

[0114] In the above embodiment, the moving unit 3 is configured to move the resin residue removal head 4 between a distant position Z1 and a near position Z2 by rocking the support arm 34 about the support shaft 35. However, the structure for moving the resin residue removal head 4 between the distant position Z1 and the near position Z2 is not limited to this. For example, as Figure 9A as well as Figure 9BAs shown, a structure can also be adopted in which the support arm 34 is raised and lowered in the vertical direction by using the telescopic drive unit 6, thereby moving the resin residue removal head 4 between the far-away position Z1 and the near position Z2. An electric cylinder can be cited as an example of the telescopic drive unit 6. Furthermore, it is also preferable to combine a structure that causes the support arm 34 to rock about the support shaft 35 with a structure that uses the telescopic drive unit 6 to raise and lower the support arm, and apply this combination to molds 101 of different heights.

[0115] <Variations 1-3>

[0116] In the above embodiment, the resin residue removal head 4 has a pair of columnar members 42 as resin residue removal components. However, as Figure 24A as well as Figure 24B As shown, the resin residue removal head 4, as a resin residue removal component, can also replace the pair of columnar components 42, and has a rotation direction in which the resin residue removal head 4 (rotating plate 41) rotates. Figure 24A as well as Figure 24B (The arrow indicates the direction of the blade) A pair of removal blades 142 having a blade-like portion 142b. In one example, the pair of removal blades 142 are fixed to both ends of the rotating plate 41 via mounting members 41b. In addition, the material of the removal blades 142 is the same as that of the columnar member 42, preferably a soft metal, such as brass.

[0117] Furthermore, the removal blade 142 is preferably mounted on the mounting member 41b in a manner that allows adjustment of its height, i.e., the distance between the opposing surface 142a of the removal blade 142 and the lower surface 102 of the mold 101. Specifically, for example... Figure 24B As shown, the mounting member 41b has a mounting surface 41b1 inclined relative to the aforementioned rotation direction, and the removal blade 142 has a mounted surface 142c inclined corresponding to the mounting surface 41b1. Furthermore, with the mounting surface 41b1 abutting against the mounted surface 142c, a bolt 41c is inserted into an elongated hole (not shown) in the removal blade 142 and screwed into the mounting member 41b to fix the removal blade 142. With this structure, the height of the removal blade 142 can be adjusted and fixed by sliding along the mounting surface 41b1. Furthermore, it is preferable that the angle of the removal blade 142 can also be finely adjusted by adjusting the mounting angle of the removal blade 142 relative to the rotating plate 41.

[0118] Furthermore, in this variant example, such as Figure 24AAs shown, the removal blade 142 is mounted at an angle relative to the rectangular rotating plate 41 with its blade-shaped portion 142b facing inward. Specifically, the removal blade 142 is mounted such that, when viewed from above, a straight line formed by the tip of the blade-shaped portion 142b extends toward the rotation axis of the rotating plate 41. Thus, the orientation of the tip of the blade-shaped portion 142b is aligned with the direction of movement of the blade-shaped portion 142b as it rotates with the rotating plate 41, effectively scraping away resin residue adhering to the lower surface 102 of the mold 101.

[0119] In addition, such as Figure 24B As shown, when viewed from the side, the tip of the blade-shaped portion 142b facing the direction of rotation forms an acute angle. By rotating the rotating plate 41 with the opposing surface 142a of the removal blade 142 pressed against the lower surface 102 of the mold 101, the blade-shaped portion 142b can scrape off resin residue adhering to the lower surface 102 of the mold 101. Furthermore, similar to the first embodiment, a small gap may be maintained between the opposing surface 142a of the removal blade 142 and the lower surface 102 of the mold 101.

[0120] <Other variations>

[0121] In the above embodiment, the roller 23 provided on the side frame 22 presses the cam 38 of the support arm 34 from above to below, thereby causing the support arm 34 to rock by the sliding action of the sliding member 32 caused by the rodless cylinder 33. However, it is also possible to use other power units different from the rodless cylinder 33 to drive the rocking motion of the support arm 34.

[0122] In the above embodiment, the resin residue removal head 4 is configured with a pair of columnar members 42, but the number and shape of the columnar members 42 are not limited thereto. For example, the cross-sectional shape of the columnar members 42 can also be rectangular. In addition, it is also possible to have a structure in which only one columnar member 42 is provided on the rotating plate 41.

[0123] In the above embodiment, the chain 47 is moved by driving the rodless cylinder 48, thereby rotating the rotating plate 41 of the resin residue removal head 4. However, it is also possible to use other drive units such as an electric motor to rotate the rotating plate 41.

[0124] In the above embodiment, the molding apparatus 100 using the resin residue removal device 1 has an annular slit, through which a cylindrical molten resin 103 (preform) is pushed out and allowed to hang down. However, the present invention can also be used in molding apparatuses that supply sheet-like molten resin.

[0125] 2. Second Implementation Method

[0126] like Figure 10 as well as Figure 11As shown, the resin residue removal device 1 of the second embodiment of the present invention includes a support frame 2, a moving unit 3, a resin residue removal head 7, and a cleaning unit 5 (see reference). Figure 16A as well as Figure 16B ) and control unit 10. For example Figure 10 As shown, the resin residue removal device 1 uses the resin residue removal head 7 to remove the resin residue R that is attached to the lower surface 102 of the mold 101 (T mold) of the molding device 100.

[0127] In this embodiment, the molding device 100 of the resin residue removal device 1 differs from that of the first embodiment. It is a molding device for ejecting sheet-like molten resin 103 (resin sheet). A straight slit 105 is formed on the lower surface 102 of the mold 101 (T mold) to eject the molten resin 103 (see reference). Figure 11 ).like Figure 10 As shown, a pair of molding apparatuses 100 are arranged such that molten resin 103 hangs down in parallel. The pair of molten resin 103 hanging from each molding apparatus 100 is shaped by a pair of metal molds 104 and then molded into a resin molded body. Furthermore, when using molten resin 103 with added fillers (especially glass), resin residue is particularly prone to be generated.

[0128] like Figure 10 As shown, in this embodiment, resin residue removal devices 1 are respectively provided on a pair of molding devices 100. Furthermore, the resin residue is essentially generated from the resin remaining on the mold 101 side after the sheet-like molten resin 103 separates into the mold 101 side and the metal mold 104 side during mold closing. Hereinafter, the structures of each resin residue removal device 1 of this embodiment will be described in detail. Since the pair of resin residue removal devices 1 provided on each molding device 100 have the same structure, only the resin residue removal device 1 on one side will be described below.

[0129] Furthermore, in the description of this embodiment, as Figure 11 As shown, the long side of the gap 105 in the mold 101 is taken as the front-back direction, and the direction perpendicular to both the front-back and up-down directions is taken as the left-right direction (refer to...). Figure 10 as well as Figure 12 Additionally, in this embodiment, the left and right directions are as follows: Figure 10 As shown, the mold closing and opening directions are consistent with those of the metal mold 104.

[0130] 2.1 Structure of Resin Sludge Removal Device 1

[0131] <Supporting Frame 2>

[0132] like Figure 11 as well as Figure 12As shown, a pair of support frames 2 are provided at intervals along the longitudinal direction, i.e., the long side of the mold 101. The support frames 2 support the guide unit 131 of the moving unit 3. Furthermore, the support frames 2 themselves are suspended and supported, for example, together with the molding device 100.

[0133] <Moving Unit 3>

[0134] Moving unit 3 positions the resin residue removal head 7 at a position offset from directly below mold 101 without interfering with the molding action (see reference). Figure 11 as well as Figure 17A ) and the location where resin residue adhering to the lower surface 102 of mold 101 can be removed (refer to Figure 17B as well as Figure 17C Move between ) . Specifically, such as Figure 11 as well as Figure 12 As shown, the moving unit 3 includes a guide unit 131, a sliding member 32, a rodless cylinder 33 as a linear drive unit, a support arm 34, and a first air cylinder 138 as a rocking drive unit. The moving unit 3, which has these structures, is supported by a support frame 2.

[0135] The guide unit 131 is arranged between a pair of support frames 2 in a front-to-back direction along the long side of the mold 101. The guide unit 131 can slidably support the sliding member 32 via a rodless cylinder 33.

[0136] like Figure 13 As shown, the sliding member 32 has a connecting plate 32d and a pair of arm support plates 32e. The connecting plate 32d is supported by the sliding block 33a of the rodless cylinder 33 (described later), and also supports the pair of arm support plates 32e. The connecting plate 32d is a plate-shaped member with a main surface having the left-right direction as its normal direction, such as... Figure 13 As shown, it extends downward from the position supported by the sliding block 33a, which will be described later. The connecting plate 32d supports a pair of arm support plates 32e on the side opposite to the sliding block 33a (that is, the left side), and the connecting plate 32d supports one end side mounting portion 138a1 of the first air cylinder 138 in the mounting base 32d1 located on the same side as the sliding block 33a (that is, the right side) and below the sliding block 33a.

[0137] On the other hand, such as Figure 12 As shown, a pair of arm support plates 32e are plate-shaped components each having a main surface with the front-to-back direction as the normal direction, and are supported by connecting plates 32d in a parallel arrangement with open intervals in the front-to-back direction. Additionally, as... Figure 13As shown, a pair of arm support plates 32e extend to a position below the lower end of the connecting plate 32d. At the lower end of the pair of arm support plates 32e and between the pair of arm support plates 32e, the support arm 34 is axially supported in a rocking manner via a support shaft 35 extending in the front-rear direction.

[0138] like Figure 11 as well as Figure 12 As shown, the rodless cylinder 33 has a sliding block 33a and a guide member 133b. The sliding block 33a is supported by the guide member 133b and slides along the guide member 133b in the front-rear direction. Additionally, the sliding block 33a supports the connecting plate 32d of the sliding member 32. The guide member 133b is supported by a guide unit 131 and is arranged between a pair of support frames 2, extending in the front-rear direction along the long side of the mold 101. Furthermore, the rodless cylinder 33 is configured such that the sliding member 32 slides along the guide unit 131 by moving the sliding block 33a along the guide member 133b.

[0139] Furthermore, the rodless cylinder 33 can be either magnetic or pneumatic. In this embodiment, a rodless cylinder is used as a direct-acting drive unit to reduce the installation area, but an electric cylinder, pneumatic cylinder, or similar device can also be used as long as it can reciprocate the sliding member 32.

[0140] like Figure 12 as well as Figure 13 As shown, the support arm 34 is an elongated plate-shaped component with a roughly rectangular cross-section perpendicular to its long side, supporting the resin residue removal head 7. The support arm 34 is supported by a support shaft 35 extending in the front-rear direction, mounted on the arm support plate 32e, and can rock in a seesaw-like manner around the support shaft 35. Specifically, the support arm 34 has a straight main body 34e into which the support shaft 35 is inserted, an end portion 34f on the molding device 100 side that supports the resin residue removal head 7, and an end portion 34g on the opposite side of the front end portion 34f that connects to the first air cylinder 138. The main body 34e is supported by the support shaft 35 and the first air cylinder 138 to descend toward the lower end of the mold 101. Furthermore, the front end portion 34f supports the resin residue removal head 7 so that its plate-shaped base member 70 (described later) is approximately horizontal.

[0141] like Figure 13As shown, the first air cylinder 138, serving as the rocking drive unit, has a cylinder portion 138a and a rod portion 138b. An end-side mounting portion 138a1 is provided in the cylinder portion 138a, and another end-side mounting portion 138b1 is provided at the front end of the rod portion 138b. One end-side mounting portion 138a1 is rotatably connected to the mounting base 32d1 of the sliding member 32 via a rotating shaft 60, and the other end-side mounting portion 138b1 is rotatably connected to the base end portion 34g of the support arm 34 via a rotating shaft 61. Both the rotating shaft 60 and the rotating shaft 61 are shafts extending in the front-rear direction. With this structure, the first air cylinder 138 extends and retracts the rod portion 138b relative to the cylinder portion 138a, thereby causing the support arm 34 to rock in a seesaw-like manner around the support shaft 35. Specifically, when the rod 138b is retracted, the front end 34f of the support arm 34 swings downwards; when the rod 138b is extended, the front end 34f of the support arm 34 rises.

[0142] <Resin Sludge Removal Head 7>

[0143] like Figure 14 As shown, the resin residue removal head 7 has a base member 70 and a plate-shaped member 71 as a resin residue removal member. In this embodiment, the resin residue removal head 7 is configured such that the plate-shaped member 71 can be moved along the slit 105 at a position X2 directly below the mold 101 of the molding apparatus 100, thereby removing resin residue adhering to the lower surface 102 of the mold 101 using the plate-shaped member 71.

[0144] The base member 70 is supported on its right side by the front end 34f of the support arm 34. Specifically, the base member 70 is formed as a generally rectangular plate when viewed from above. The upper surface 70a on the left and front side of the base member 70, when the rectangle is roughly divided into four parts in the aforementioned top view, is as follows: Figure 15 As shown in the cross-sectional view perpendicular to the left and right direction, the upper surface 70a on the left and rear sides is higher. Furthermore, the base member 70 supports the plate-shaped member 71 on this upper surface 70a on the left and front sides. Additionally, the upper surface on the left and rear sides forms a slag-receiving portion 70b that receives resin residue wiped off by the plate-shaped member 71. Moreover, the vertical plane 70c connecting the upper surface 70a on the left and front sides and the slag-receiving portion 70b on the left and rear sides curves downwards to smoothly connect with the slag-receiving portion 70b. Furthermore, the upper surface on the right and front sides of the base member 70, as viewed from above, supports the second air cylinder 52 of the cleaning unit 5.

[0145] like Figure 15As shown, the plate-shaped member 71 is a plate-shaped member having a main surface with the vertical direction as its normal direction, and its upper surface becomes a facing surface 71a opposite to the lower surface 102 of the mold 101. Furthermore, the edge where the facing surface 71a of the plate-shaped member 71 intersects with the rear surface of the plate-shaped member 71 becomes a removal edge 71b for wiping away resin residue. As the material for the plate-shaped member 71, a metal softer than the base member 70 is preferably used, such as brass.

[0146] <Cleaning Unit 5>

[0147] Cleaning unit 5 is used to wipe the plate-shaped component 71 of resin residue removal head 7 from mold 101 and remove the resin residue R (refer to) adhering to the plate-shaped component 71. Figure 20A as well as Figure 21A Remove from plate member 71. (e.g.) Figure 16A as well as Figure 16B As shown, the cleaning unit 5 includes a second air cylinder 52 as a forward and backward cleaning unit, a cleaning component 53, a first air ejection unit 54, and a second air ejection unit 55. The second air cylinder 52 supplies compressed air to cause a piston (not shown) to move forward and backward within cylinder 52a, which in turn moves the rod 52b connected to the piston (…). Figure 20B as well as Figure 21B The cleaning unit can be configured to drive the cleaning member 53 forward and backward using a structure other than the second air cylinder 52.

[0148] The cleaning component 53 is installed at the front end of the rod 52b. For example... Figure 14 as well as Figure 15 As shown, the cleaning member 53 is roughly rectangular in shape when viewed from a cross section perpendicular to the left and right directions, corresponding to the smooth connection between the vertical surface 70c of the base member 70 and the slag receiving part 70b. The edge where the rear surface intersects the lower surface is curved (with an R shape) when viewed from this cross section.

[0149] The second air cylinder 52 is disposed on the upper part of the base member 70 on the right side and rear side of the resin residue removal head 7. In addition, the second air cylinder 52 is configured to move the cleaning member 53 in the left-right direction along the removal edge 71b of the plate member 71.

[0150] The first air ejection unit 54 has a pair of front and rear nozzles 54a and an air supply source (not shown). Figures 14-16B As shown, a pair of nozzles 54a are disposed above the resin residue removal head 7 and to the right of the plate member 71 and the cleaning member 53. Moreover, the first air ejection unit 54 is configured to eject compressed air from the right side of the plate member 71 and the cleaning member 53 via the nozzles 54a.

[0151] The second air ejection unit 55 has a pair of left and right nozzles 55a, an air supply source (not shown), and a nozzle support frame 55b. Figure 16A as well as Figure 16B As shown, a pair of nozzles 55a are supported by a nozzle support frame 55b at the left side of the resin residue removal head 7. Furthermore, the second air ejection unit 55 at the left side of the resin residue removal head 7 ejects compressed air backward via the nozzles 55a.

[0152] <Control Unit 10>

[0153] The control unit 10 controls the various actions of the resin residue removal device 1. Specifically, the control unit 10 controls the actions of the rodless cylinder 33 and the first air cylinder 138 of the moving unit 3, the second air cylinder 52 of the cleaning unit 5, the first air ejection unit 54, and the second air ejection unit 55.

[0154] Specifically, the control unit 10 can be configured as an information processing device having a CPU, memory (e.g., flash memory), input unit, and output unit. Furthermore, the processing performed by the aforementioned components of the control unit 10, configured as an information processing device, is carried out by the CPU reading and executing a program stored in the memory. For example, a personal computer, a PLC (programmable logic controller), or a microcomputer can be used as the information processing device. However, it is also possible to configure the control unit 10 to perform a portion of its functions on a cloud connected via any communication unit.

[0155] 2.2 Operation of resin residue removal device 1

[0156] Next, refer to Figures 17A to 21B The operation of the resin residue removal device 1 in this embodiment will be specifically described as follows: the removal head moving action that moves the resin residue removal head 7 to remove resin residue, and the resin residue cleaning action that cleans the resin residue R adhering to the resin residue removal head 7. These actions are controlled by the control unit 10 according to user instructions or a preset program. Furthermore, in this embodiment, the removal head moving action simultaneously removes resin residue from the mold 101. In addition, the removal head moving action also removes sheet-like molten resin 103 from the gap 105 (see reference) of the mold 101 of the molding apparatus 100. Figure 11After being ejected, the action is performed at the moment when the molten resin 103 from the slit 105 is interrupted. More specifically, for example, after the metal mold 104 is closed, the resin residue removal device 1 is activated at the moment when the ejector (not shown) for removing the molded body clamps the overflowing molten resin 103 from the upper part of the metal mold 104. These actions are preferably performed once each time the metal mold 104 is closed, but they can also be performed every predetermined number of times or as instructed by the user. Furthermore, the cleaning action is performed immediately after the removal head movement action. However, the cleaning action does not need to be performed every time after the removal head movement action; it can be performed every predetermined number of times or as instructed by the user.

[0157] <Remove head movement>

[0158] In the resin residue removal device 1 of this embodiment, the control unit 10 controls the moving unit 3, such as Figures 17A to 17D As shown, the resin residue removal head 7 is positioned at a lateral position X1, offset from directly below the mold 101 (refer to...). Figure 17A ) and directly below mold 101, i.e., at position X2 (refer to) Figures 17B-17D It moves between ( ). Additionally, the control unit 10, under the control of the movement unit 3, such as Figure 17A , Figure 17B as well as Figure 18A as well as Figure 18B As shown, at position X2 directly below the aforementioned point, the resin residue removal head 7 is positioned at a distance Z1 from the lower surface 102 of the mold 101 (refer to...). Figure 17A , Figure 17B as well as Figure 18A ) and the proximity position Z2 near the lower surface 102 (refer to Figure 17C , Figure 17D as well as Figure 18B Move between ).

[0159] Furthermore, in the resin residue removal apparatus 1 of this embodiment, unlike the resin residue removal apparatus 1 of the first embodiment, when the support arm 34 shakes and moves the resin residue removal head 7 toward the approach position Z2, the mold 101 abuts against the plate-shaped member 71 of the resin residue removal head 7. By having the plate-shaped member 71 abut against the mold 101 at the approach position Z2, the resin residue adhering to the lower surface 102 of the mold 101 can be wiped off more reliably. In addition, the plate-shaped member 71 of the resin residue removal head 7 can also be pressed against the mold 101. As described above, in this invention, the term "approach position" includes, in addition to the case where there is a small gap between the mold 101 and the resin residue removal head 7 (or, in the first embodiment, the mold 101 and the resin residue removal head 4), a case where the gap is 0 mm.

[0160] In this embodiment, "directly below position X2" refers to the position inside the cylinder obtained by extending the outer edge of the lower surface 102 of the mold 101 downwards. Furthermore, "the resin residue removal head 7 is located at directly below position X2" means that the center of gravity of the plate-shaped member 71 of the resin residue removal head 7 is located inside the cylinder. The following is a detailed description of the movement of the resin residue removal head 7 performed by the moving unit 3.

[0161] When the resin residue removal device 1 of this embodiment is not performing the resin residue removal operation, such as Figure 17A As shown, the resin residue removal head 7 is retracted to a side position X1 (behind the mold 101) and remains in a position that does not interfere with the molding operation of the molding device 100. Furthermore, in this state, as... Figure 18A As shown, the support arm 34 of the moving unit 3 keeps the rod portion 138b of the first air cylinder 138 in a retracted state, thereby keeping the front end portion 34f in a lowered state. Consequently, the resin residue removal head 7 also becomes slightly lowered at its front end.

[0162] From this state, in order to move the resin residue removal head 7 to remove resin residue, the control unit 10 drives the rodless cylinder 33 of the moving unit 3. Specifically, the control unit 10 causes the sliding block 33a of the rodless cylinder 33 to slide forward along the guide rail 33b (see reference). Figure 11 as well as Figure 12 In this way, as the sliding block 33a slides, the sliding member 32 slides forward along the track member 31, and the support arm 34 supported by the sliding member 32 moves forward. Furthermore, by the forward movement of the support arm 34, as... Figures 17A-17B As shown, the resin residue removal head 7, supported by its front end 34f, moves from a side position X1 to a directly downward position X2. Furthermore, as... Figure 17B As shown, the control unit 10 first moves the resin residue removal head 7 to the side position X1 in the position X2 directly below (refer to...). Figure 17A The farthest position.

[0163] Among them, from Figure 17A The lateral position X1 shown is to Figure 17B At the position X2 directly below, furthest from the side position X1, the control unit 10 maintains the rod 138b of the first air cylinder 138 in a retracted state. Consequently, the front end 34f of the support arm 34 remains in a lowered state, and the resin residue removal head 7... Figure 17B as well as Figure 18A The resin residue removal device 1 remains at a position far from the side position X1, as shown in this embodiment. That is, in this embodiment, the resin residue removal head 7 is moved to the position furthest from the side position X1 (see reference). Figure 17B Before that, resin residue is not removed.

[0164] Next, the control unit 10 is positioned at the point where the resin residue removal head 7 is furthest from the lateral position X1 (refer to...). Figure 17B In this state, the rod portion 138b of the first air cylinder 138 is extended. This causes the support arm 34 to rock, thereby raising the front end 34f, as... Figure 17C as well as Figure 18B As shown, the resin residue removal head 7 moves from the far-away position Z1 to the near position Z2 inside the position X2 directly below. Then, while maintaining the resin residue removal head 7 in the near position Z2, the control unit 10 causes the sliding block 33a of the rodless cylinder 33 to slide rearward along the guide rail 33b (refer to 17C~). Figure 17D As a result, the resin residue removal head 7 moves along the slit 105 toward the lateral position X1, and the resin residue adhering to the vicinity of the slit 105 is wiped off by the removal edge 71b of the plate-shaped member 71. In addition, a portion of the wiped-off resin residue adheres to the plate-shaped member 71, and the resin residue falling from the plate-shaped member 71 is retained on the residue receiving portion 70b.

[0165] If from Figure 17D The state begins to further cause the sliding block 33a of the rodless cylinder 33 of the moving unit 3 to slide backward along the guide rail 33b, and the resin residue removal head 7 moves from the directly below position X2 toward the side position X1. At this time, when the removal edge 71b of the plate member 71 reaches the rear end of the gap 105, the control unit 10 causes the rod portion 138b of the first air cylinder 138 to retract. Thus, before the resin residue removal head 7 reaches the position closest to the side position X1 in the directly below position X2, the resin residue removal head 7 moves from the approach position Z2 (refer to...) Figure 18B ) Towards position Z1 (reference) Figure 18A Then, the resin residue removal head 7, in the state of being in the distance from position Z1, moves from the directly below position X2 to the side position X1.

[0166] Thus, by moving the resin residue removal head 7 from the directly below position X2 to the side position X1 while it is in the position away from Z1, as... Figure 19 As shown, for example, even if there is a small protrusion 102a at the rear edge of the lower surface 102 of the mold 101, it is possible to prevent the protrusion 102a from interfering with the resin residue removal head 7.

[0167] As described above, the moving unit 3 of this embodiment is configured to move the resin residue removal head 7 between a lateral position X1 and a directly below position X2 by moving the support arm 34 in the front-back direction (horizontal direction) relative to the support frame 2. Furthermore, the moving unit 3 is configured to move the resin residue removal head 7 between a distant position Z1 and a near position Z2 by rocking the support arm 34 in a seesaw-like manner.

[0168] <Resin residue cleaning action>

[0169] In the resin residue removal device 1 of this embodiment, the control unit 10 controls the second air cylinder 52, the first air ejection unit 54 and the second air ejection unit 55 of the cleaning unit 5 to perform the resin residue cleaning action after the removal head movement is completed.

[0170] Specifically, such as Figures 20A-20B , Figures 21A-21B As shown, when the resin residue removal head 7 is in the side position X1, the control unit 10 drives the second air cylinder 52, causing the rod 52b to extend and move the cleaning member 53 mounted at its front end to the left. Simultaneously, the control unit 10 activates the first air ejection unit 54, which ejects compressed air from the right side to the plate-shaped member 71 and the cleaning member 53 via the nozzle 54a. Furthermore, the control unit 10 activates the second air ejection unit 55, which ejects compressed air rearward from the left side of the resin residue removal head 7 via the nozzle 55a.

[0171] Through this action, the resin residue R adhering to the plate-shaped member 71 of the resin residue removal head 7 and the resin residue R accumulated in the residue receiving part 70b are peeled off by the cleaning member 53 and the compressed air ejected from the nozzle 54a of the first air ejection unit 54, and fly out to the left. Thus, the plate-shaped member 71 and the residue receiving part 70b are cleaned. Furthermore, in this embodiment, as... Figure 14 as well as Figure 15 As shown, the slag receiving portion 70b of the base member 70 is smoothly connected to the vertical surface 70c, and the edge where the rear surface and the lower surface of the cleaning member 53 intersect is curved, thereby inhibiting the accumulation of resin slag R between the slag receiving portion 70b and the cleaning member 53.

[0172] The resin residue R that was ejected by the cleaning component 53 and the compressed air ejected from the nozzle 54a of the first air ejection unit 54 was ejected backward by the compressed air ejected from the nozzle 55a of the second air ejection unit 55 (see reference). Figure 21B The resin residue R flies to the rear, that is, to the side opposite to the mold 101, thereby preventing the resin residue R from adhering to the metal mold 104 or the like located below the mold 101. Furthermore, the resin residue R, which is thus removed and recycled, can be crushed and reused, for example, by a crusher.

[0173] Furthermore, the compressed air ejected from the nozzle 54a of the first air ejection unit 54 also functions as a cooling unit to cool the plate-shaped member 71 of the resin residue removal head 7. By cooling the plate-shaped member 71, the adhesion of the resin residue R is reduced, making it easier to peel off the resin residue R.

[0174] 2.3 Effects

[0175] As described above, in the resin residue removal apparatus 1 according to this embodiment, the support arm 34 is moved in the front-to-back direction (horizontal direction) by driving the rodless cylinder 33, thereby moving the resin residue removal head 7 between the side position X1 and the directly below position X2. Furthermore, the support arm 34 is rocked by driving the first air cylinder 138, thereby moving the resin residue removal head 7 between the far-away position Z1 and the near-away position Z2. In addition, by rocking the resin residue removal head 7 after it has moved to the directly below position X2, interference between the resin residue removal head 7 and the mold 101 can be prevented when the resin residue removal head 7 moves from the side position X1 to the directly below position X2.

[0176] Furthermore, in this embodiment, the resin residue removal device 1 moves the resin residue removal head 7 to the position furthest from the lateral position X1 in the control unit 10 (see reference). Figure 17B After that, the resin residue removal head 7 is moved from the far-away position Z1 to the near-away position Z2. As a result, the resin residue that gradually seeps out from the gap 105 can be removed before the next molding operation of the molding device 100, and the adhesion of resin residue to the resin molded body can be appropriately suppressed.

[0177] Furthermore, the resin residue removal device 1 of this embodiment has a cleaning unit 5 for cleaning the resin residue adhering to the resin residue removal head 7, thereby maintaining the resin residue removal performance and enabling continuous use of the resin residue removal device 1.

[0178] 2.4 Variations

[0179] The invention of this embodiment can also be implemented in the following ways.

[0180] <Variation Example 2-1>

[0181] In the above embodiment, the molding apparatus 100 using the resin residue removal device 1 is configured such that a pair of molten resin 103s (resin sheets) are arranged in a manner in which they hang parallel to a set of metal molds 104. However, as Figure 22 As shown, the resin residue removal device 1 of this embodiment can also be used in a molding device 100 that is configured with only one of a set of metal molds 104.

[0182] <Variation Example 2-2>

[0183] Furthermore, as in the above embodiment, in a pair of molding apparatuses 100 arranged in a manner in which a pair of molten resin 103 hangs parallel to a set of metal molds 104, it is also possible to use the resin residue removal device 1 in only one molding apparatus 100. For example, as Figure 23As shown, when a skin material 106 (e.g., a covering material) is placed between the molten resin 103 hanging from one of the molding apparatus 100 (the molding apparatus 100 on the left side of the figure) and the metal mold 104, even if resin residue adheres to the molten resin 103, the resin residue will not affect the appearance of the resin molded article covered by the skin material 106. Therefore, it is also preferable to place the resin residue removal device 1 only in the molding apparatus 100 on the side where the skin material 106 is not placed.

[0184] <Other variations>

[0185] In the above embodiment, the control unit 10 moves the resin residue removal head 7 to the position furthest from the lateral position X1 (see reference). Figure 17B After that, the resin residue removal head 7 is moved from the far-away position Z1 to the near-approach position Z2 to remove the resin residue. However, even when the resin residue removal head 7 is moved from the side position X1 (that is, the position where it is retreated when the resin residue removal action is not performed) to the position furthest from the side position X1, the resin residue removal head 7 can be moved to the near-approach position Z2 to remove the resin residue.

[0186] In the above embodiment, compressed air is ejected from the nozzle 54a of the first air ejection unit 54 of the cleaning unit 5 to cool the plate-shaped member 71 of the resin residue removal head 7. However, a water-cooling unit for water cooling of the plate-shaped member 71 may also be provided.

[0187] Explanation of reference numerals in the attached figures

[0188] 1: Resin residue removal device; 2: Support frame; 3: Moving unit; 4: Resin residue removal head; 5: Cleaning unit; 6: Telescopic drive unit; 7: Resin residue removal head; 10: Control unit; 21: U-shaped frame; 21a: Upper frame; 21b: Rear frame; 21c: Lower frame; 22: Side frame; 23: Roller (pressing part); 31: Track component (guide unit); 32: Sliding component; 32a: Upper plate; 32b: Rear plate; 32c: Lower plate; 32d: Connecting plate; 32d1: Mounting base; 32e: Arm support plate; 33: Rodless cylinder (linear drive unit); 33a: Sliding block; 33b: Guide track (guide component). 34: Support arm; 34a: Front end; 34b: Front side cover; 34c: Rear side cover; 34d: Rear end; 34e: Main body; 34f: Front end; 34g: Base end; 35: Support shaft; 36: Guide block; 37: Rocking limiter; 38: Cam (pressed part); 38a: Inclined surface; 39: Rotating shaft; 41: Rotating plate; 41a: Shaft; 41b: Mounting component; 41b1: Mounting surface; 41c: Bolt; 42: Columnar component (resin residue removal component); 42a: Opposing surface; 42b: Expanded diameter part; 43: Removal drive unit; 44: Rotating shaft; 45: Front side pulley; 46: Rear side pulley; 47: Chain 48: Rodless cylinder; 48a: Support plate; 48b: Sliding block; 48c: Guide rail; 49: Rotating shaft; 51: Tongue-shaped component; 52: Second air cylinder (forward and backward cleaning unit); 52a: Cylinder; 52b: Rod; 53: Cleaning component; 54: First air ejection unit (cooling unit); 54a: Nozzle; 55: Second air ejection unit; 55a: Nozzle; 55b: Nozzle support frame; 60: Rotating shaft; 61: Rotating shaft; 70: Base component; 70a: Upper surface; 70b: Slag receiving part; 70c: Vertical surface; 71: Plate-shaped component (resin slag removal component); 71a: Opposing surface; 71b: Removal edge; 100: Molding device. 101: Mold (T-mold), 102: Lower surface, 102a: Protrusion, 103: Molten resin (preform, resin sheet), 104: Metal mold, 105: Gap, 106: Skin material, 131: Guide unit, 133b: Guide member, 138: First air cylinder (rocking drive unit), 138a: Cylinder part, 138a1: One-end side mounting part, 138b: Rod part, 138b1: The other-end side mounting part, 142: Removal blade, 142a: Opposing surface, 142b: Blade-shaped part, 142c: Mounted surface, R: Resin residue, X1: Lateral position, X2: Directly below position, Z1: Away position, Z2: Approaching position.

Claims

1. A resin residue removal device for removing resin residue adhering to the lower surface of a mold in a molding device, wherein, It features a moving unit and a resin residue removal head. The moving unit is configured to move the resin residue removal head between a lateral position offset from directly below the mold and a position directly below the mold, and within the directly below position, between a position far from the lower surface and a position close to the lower surface. The resin residue removal head is configured to remove resin residue adhering to the lower surface by moving along the lower surface. The moving unit has a support arm that supports the resin residue removal head with its front end side, and the moving unit has at least one of the following structures (1) and (2). (1) A structure in which the resin residue removal head moves between the lateral position and the directly below position by moving the support arm in the horizontal direction. (2) A structure that moves the resin residue removal head between the distant position and the approach position by causing the support arm to rock in a seesaw-like manner.

2. The resin residue removal device according to claim 1, wherein, The moving unit includes a guiding unit, a sliding member, and a linear drive unit. The support arm is supported by the sliding member. The resin residue removal head moves between the directly below position and the side position by sliding the sliding member along the guide unit using the linear drive unit.

3. The resin residue removal device according to claim 2, wherein, The guide unit extends toward the mold at the lateral position. The sliding member slides along the guide unit by being driven by the linear drive unit, thereby the support arm moves forward and backward, and the resin residue removal head moves between the directly below position and the side position.

4. The resin residue removal device according to claim 3, wherein, The sliding member has a support shaft for axial support of the support arm and a pressing part for pressing the support arm. The support arm has a pressing portion on the side opposite to the resin residue removal head, separated by the support shaft. As the support arm moves forward with the sliding member, the pressing part presses the pressed part from top to bottom, causing the support arm to rock in a seesaw shape around the support shaft.

5. The resin residue removal device according to claim 4, wherein, The pressing part is a roller disposed on the support frame that supports the guide unit. The pressed portion is a cam whose upper surface is inclined as it rises toward the rear end of the support arm. As the support arm advances with the sliding member, the roller abuts against the upper surface, pressing the cam from above to below.

6. The resin residue removal device according to claim 2, wherein, The molding device ejects a sheet-like resin sheet, and a straight slit is formed on the lower surface of the mold to eject the resin sheet. The guide unit is arranged along the long side of the gap. Driven by the linear drive unit, the sliding member slides along the guide unit, thereby sliding the support arm, and the resin residue removal head moves between the lateral position and the directly below position, and then moves along the gap.

7. The resin residue removal device according to claim 6, wherein, The sliding member has a support shaft that provides axial support for the support arm. The moving unit has a rocking drive unit that causes the support arm to rock in a seesaw-like manner around the support shaft.

8. The resin residue removal device according to claim 7, wherein, It has a control unit for controlling the moving unit. When the resin residue removal head is in the farthest position, the control unit uses the linear drive unit to move the resin residue removal head to the position furthest from the side position in the directly below position. Then, the control unit uses the rocking drive unit to rock the support arm, thereby moving the resin residue removal head to the approach position. After that, when the resin residue removal head is in the approach position, the control unit uses the linear drive unit to move the resin residue removal head along the gap toward the side position.

9. The resin residue removal device according to claim 1, wherein, A cleaning unit is provided for cleaning resin residue adhering to the resin residue removal head.

10. The resin slag removal device according to claim 9, wherein, The cleaning unit includes a cooling unit for cooling the resin residue removal head.

11. The resin residue removal device according to claim 9, wherein, The cleaning unit is a tongue-shaped component that wipes away the resin residue adhering to the resin residue removal head as the resin residue removal head moves to the lateral position.

12. The resin slag removal device according to claim 9, wherein, The cleaning unit has a cleaning member that moves along the resin residue removal head to wipe away the resin residue adhering to the resin residue removal head, and an air ejection unit that ejects air toward the cleaning member.

13. A resin residue removal device for removing resin residue adhering to the lower surface of a mold in a molding device, wherein, It features a moving unit and a resin residue removal head. The moving unit is configured to move the resin residue removal head between a lateral position offset from directly below the mold and a position directly below the mold, and within the directly below position, between a position far from the lower surface and a position close to the lower surface. The resin residue removal head is configured to remove resin residue adhering to the lower surface by moving along the lower surface. The forming device ejects a cylindrical preform, and an annular slit is formed on the lower surface of the mold to allow the cylindrical preform to be ejected. The resin residue removal head includes a resin residue removal component and a removal drive unit. The resin residue removal component has an opposing surface opposite to the lower surface. Driven by the removal drive unit, the resin residue removal component rotates such that the opposing surface moves along the gap.

14. The resin residue removal device according to claim 13, wherein, The resin residue removal component is a columnar component that is supported in a self-rotating manner.

15. The resin residue removal device according to claim 13, wherein, The resin residue removal component is a removal blade with a blade-like portion in the rotational direction.

Images