Molding machine
The molding machine employs a tension adjustment mechanism to prevent sliding plate deformation, addressing damage issues and enhancing operational reliability by applying controlled tension.
Patent Information
- Application Number
- JP2024085966
- Authority / Receiving Office
- JP · JP
- Patent Type
- Applications
- Current Assignee / Owner
- Filing Date
- 2024-05-28
- Publication Date
- 2025-12-10
- Estimated Expiration
- 2044-05-28
AI Technical Summary
Existing molding machines face issues with damage to the sliding plate due to deflection and deformation during mold opening and closing, which can lead to mechanical failure and reduced operational efficiency.
A molding machine with a tension adjustment mechanism that includes a base frame, slide plate, fixed die plate, link housing, movable die plate, fixing mechanism, and tension adjusting mechanism, utilizing bolts and nuts to apply controlled tension to the slide plate, preventing deformation and damage.
The tension adjustment mechanism effectively suppresses damage to the sliding plate, ensuring smooth operation and extending the lifespan of the machine by minimizing deformation and wear.
Smart Images
Figure 2025179309000001_ABST
Abstract
Description
[Technical Field]
[0001] The present invention relates to a molding machine for producing a molded product by filling a cavity in a mold with a liquid material. [Background technology]
[0002] In molding machines such as die-casting machines and injection molding machines, for example, a movable mold held by a movable die plate and a fixed mold held by a fixed die plate are clamped together using a link mechanism. The movable die plate, which is provided on a base frame, is moved in the mold closing direction to clamp the movable mold and the fixed mold.
[0003] In a molding machine, a molded product is produced by filling the cavity in the closed mold with a liquid material using an injection device. After the molded product is produced, the molded product is removed from the mold by moving the movable die plate in the mold opening direction.
[0004] A sliding plate is provided between the base frame and the movable die plate, which allows the movable die plate to move smoothly in the mold closing direction and mold opening direction.
[0005] Patent Document 1 describes a mechanism that applies a tensile force to a slide plate (sliding plate) provided on a machine base (base frame). By applying a tensile force to the slide plate (sliding plate), for example, the occurrence of deflection in the slide plate (sliding plate) is prevented. If deflection occurs in the slide plate (sliding plate), for example, the slide plate (sliding plate) becomes more likely to deform due to frictional force when moving the movable die plate, and there is a risk of the slide plate (sliding plate) being damaged. [Prior art documents] [Patent documents]
[0006] [Patent Document 1] Japanese Patent Application Laid-Open No. 2002-240115 Summary of the Invention [Problem to be solved by the invention]
[0007] The problem to be solved by the present invention is to provide a molding machine that can suppress damage to the sliding plate. [Means for solving the problem]
[0008] A molding machine according to one aspect of the present invention comprises a base frame, a slide plate provided on the base frame, a fixed die plate provided on the base frame and fixed to the base frame, a link housing provided on the base frame, a movable die plate provided between the link housing and the fixed die plate and slidably provided on the slide plate, a fixing mechanism for fixing one end of the slide plate to the base frame, and a tension adjusting mechanism provided on the other end side of the slide plate for adjusting the tension of the slide plate, wherein the tension adjusting mechanism is a first member between which the slide plate is provided and the base frame, The device includes a first bolt that fixes a first member to the base frame, a second member having a first female thread and the first member interposed between the first bolt and the fixing mechanism and the sliding plate interposed between the second member and the base frame, a third member that is interposed between the second member and the base frame and the sliding plate interposed between the second member, a second bolt that passes through the second member and fixes the second member and the third member, and a third bolt that passes through the second member, has a tip and a head, is fitted into the first female thread, the tip can contact the first member, and the second member is interposed between the head and the first member.
[0009] In the molding machine of the above aspect, it is preferable that the tension adjustment mechanism further includes a first nut that is provided between the head and the second member or between the first member and the second member and is fitted onto the third bolt.
[0010] In the molding machine of the above aspect, it is preferable that the third member and the base frame are separated in the direction of gravity when the tip portion is not in contact with the first member.
[0011] In the molding machine of the above aspect, it is preferable that the distance between the third member and the base frame is 0.1 mm or more and 1.0 mm or less when the tip portion is not in contact with the first member.
[0012] In the molding machine of the above aspect, it is preferable that the third member has a second female thread into which the second bolt is fitted.
[0013] In the molding machine of the above aspect, it is preferable that the second bolt includes a pair of bolts, and the third bolt is provided between the pair of bolts.
[0014] In the molding machine of the above aspect, it is preferable that the tension adjusting mechanism is provided between the movable die plate and the fixed die plate.
[0015] In the molding machine of the above aspect, it is preferable that the fixed die plate is capable of holding a fixed mold, the movable die plate is capable of holding a movable mold, and the molding machine further comprises an injection device that supplies liquid material into a cavity formed between the fixed mold and the movable mold.
[0016] In the molding machine of the above aspect, the liquid material is preferably liquid metal.
[0017] In the molding machine of the above aspect, it is preferable that the hardness of the material of the slide plate is greater than the hardness of the material of the base frame.
[0018] In the molding machine of the above aspect, the sliding plate is preferably made of tool steel.
[0019] In the molding machine of the above aspect, the thickness of the sliding plate is preferably 1 mm or more and 5 mm or less. [Effects of the Invention]
[0020] According to the present invention, it is possible to provide a molding machine that can suppress damage to the sliding plate. [Brief explanation of the drawings]
[0021] [Figure 1] 1 is a schematic diagram showing the overall configuration of a molding machine according to a first embodiment. [Figure 2] FIG. 2 is a schematic side view of the fixing mechanism of the first embodiment. [Figure 3] FIG. 2 is a schematic top view of the fixing mechanism of the first embodiment. [Figure 4] FIG. 2 is a schematic cross-sectional view of a fixing mechanism according to the first embodiment. [Figure 5] FIG. 2 is a schematic side view of the tension adjustment mechanism of the first embodiment. [Figure 6] FIG. 2 is a schematic top view of the tension adjustment mechanism of the first embodiment. [Figure 7] FIG. 2 is a schematic top view of the tension adjustment mechanism of the first embodiment. [Figure 8] FIG. 2 is a schematic cross-sectional view of the tension adjustment mechanism of the first embodiment. [Figure 9] FIG. 2 is a schematic cross-sectional view of the tension adjustment mechanism of the first embodiment. [Figure 10] 5A to 5C are explanatory diagrams of a method for adjusting the tension of a sliding plate according to the first embodiment. [Figure 11] 5A to 5C are explanatory diagrams of a method for adjusting the tension of a sliding plate according to the first embodiment. [Figure 12] 5A to 5C are explanatory diagrams of a method for adjusting the tension of a sliding plate according to the first embodiment. [Figure 13] FIG. 10 is a schematic side view of a tension adjustment mechanism of a comparative example. [Figure 14] 10A and 10B are diagrams illustrating the operation of a tension adjustment mechanism of a comparative example. [Figure 15] 5A to 5C are diagrams illustrating the operation of the tension adjustment mechanism of the first embodiment. [Figure 16] FIG. 10 is a side view of a tension adjustment mechanism according to a modified example of the first embodiment. [Figure 17] FIG. 4 is a schematic diagram showing the overall configuration of a molding machine according to a second embodiment. DETAILED DESCRIPTION OF THE INVENTION
[0022] Hereinafter, an embodiment of the present invention will be described with reference to the drawings.
[0023] (First embodiment) The molding machine of the first embodiment comprises a base frame, a sliding plate provided on the base frame, a fixed die plate provided on the base frame and fixed to the base frame, a link housing provided on the base frame, a movable die plate provided between the link housing and the fixed die plate and slidably provided on the sliding plate, a fixing mechanism that fixes one end of the sliding plate to the base frame, and a tension adjustment mechanism that is provided on the side of the other end of the sliding plate and adjusts the tension of the sliding plate. The tension adjustment mechanism includes a first member having a sliding plate between it and the base frame, a first bolt that secures the first member to the base frame, a second member having a first female thread and a sliding plate between it and the base frame and a first member between it and the fixing mechanism, a third member that is provided between the second member and the base frame and a sliding plate between it and the second member, a second bolt that penetrates the second member and secures the second member and the third member, and a third bolt that penetrates the second member, has a tip and a head, is fitted with the first female thread, has a tip that can contact the first member, and has the second member between its head and the first member.
[0024] Fig. 1 is a schematic diagram showing the overall configuration of a molding machine of a first embodiment. Fig. 1 is a side view including a partial cross-sectional view. The molding machine of the first embodiment is a die-casting machine 100. The die-casting machine 100 is, for example, a cold chamber type die-casting machine.
[0025] The die casting machine 100 includes a base frame 10, a fixed die plate 12, a movable die plate 14, a link housing 16, a mold 18, a link mechanism 20, a clamping cylinder 21, tie bars 22, an injection device 24, an extrusion device 26, a sliding plate 28, a fixing mechanism 30, and a tension adjustment mechanism 32.
[0026] The die-casting machine 100 is a machine that produces a die-cast product (molten product) by injecting and filling a liquid metal (molten metal) into the interior of a mold 18 (cavity Ca in FIG. 1 ) and solidifying the liquid metal within the mold 18. The metal is, for example, aluminum, an aluminum alloy, a zinc alloy, or a magnesium alloy. The liquid metal is an example of a liquid material.
[0027] The mold 18 includes a fixed mold 18a and a movable mold 18b.
[0028] The fixed die plate 12 is provided on the base frame 10. The fixed die plate 12 is fixed to the base frame 10. The fixed die plate 12 is capable of holding a fixed die 18a.
[0029] The movable die plate 14 is provided on the base frame 10. The movable die plate 14 is provided between the link housing 16 and the fixed die plate 12.
[0030] The movable die plate 14 is provided so as to be movable in the mold opening and closing direction relative to the base frame 10. The mold opening and closing direction means both the mold opening direction and the mold closing direction shown in FIG.
[0031] The movable die plate 14 is capable of holding the movable die 18b opposite the fixed die 18a.
[0032] The link housing 16 is provided on the base frame 10. The link housing 16 is fixed to the base frame 10, for example.
[0033] The link mechanism 20 is provided between the link housing 16 and the movable die plate 14. One end of the link mechanism 20 is fixed to the link housing 16. The other end of the link mechanism 20 is fixed to the movable die plate 14.
[0034] The mold 18 is opened, closed, and clamped using a link mechanism 20 and a clamping cylinder 21.
[0035] The fixed die plate 12 and the link housing 16 are fixed by tie bars 22. The tie bars 22 support the clamping force while the clamping force is applied to the fixed die 18a and the movable die 18b.
[0036] The injection device 24 has the function of supplying molten metal to the cavity Ca of the mold 18 and pressurizing the molten metal. The injection device 24 has a rod that can be connected to a plunger that slides inside a sleeve. The injection device 24 slides the plunger inside the sleeve to supply molten metal to the mold 18.
[0037] The extrusion device 26 has the function of extruding the manufactured die-cast product from the die 18 .
[0038] The sliding plate 28 is provided on the base frame 10. The sliding plate 28 is provided on a convex area 10a provided on the base frame 10, for example.
[0039] The slide plate 28 is provided between the movable die plate 14 and the base frame 10. The movable die plate 14 is provided on the slide plate 28 so as to be slidable thereon.
[0040] The sliding plate 28 has the function of smoothing the movement of the movable die plate 14 in the mold opening and closing direction. The sliding plate 28 is replaceable. For example, when the surface of the sliding plate 28 is worn down due to friction with the movable die plate 14, the sliding plate 28 is replaced.
[0041] The material of the sliding plate 28 and the material of the base frame 10 are, for example, steel. The carbon concentration of the material of the sliding plate 28 is, for example, higher than the carbon concentration of the material of the base frame 10. The hardness of the material of the sliding plate 28 is, for example, higher than the hardness of the material of the base frame 10. The material of the sliding plate 28 is, for example, tool steel.
[0042] The thickness of the slide plate 28 is, for example, 1 mm or more and 5 mm or less.
[0043] The fixing mechanism 30 is provided on the base frame 10. The fixing mechanism 30 is provided between the link housing 16 and the movable die plate 14.
[0044] The fixing mechanism 30 has a function of fixing one end of the sliding plate 28 to the base frame 10. The fixing mechanism 30 has a function of fixing one end of the sliding plate 28 to the convex area 10a of the base frame 10, for example.
[0045] The tension adjustment mechanism 32 is provided on the base frame 10. The tension adjustment mechanism 32 is provided on the other end side of the sliding plate 28. The tension adjustment mechanism 32 is provided between the movable die plate 14 and the fixed die plate 12.
[0046] The tension adjusting mechanism 32 has the function of adjusting the tension of the sliding plate 28 .
[0047] Fig. 2 is a schematic side view of the fixing mechanism of the first embodiment. Fig. 3 is a schematic top view of the fixing mechanism of the first embodiment. Fig. 4 is a schematic cross-sectional view of the fixing mechanism of the first embodiment. Fig. 4 is a cross-section taken along line AA' in Fig. 3.
[0048] The fixing mechanism 30 includes a first pressing member 30a and a pair of first pressing bolts 30b. The first pressing member 30a is made of, for example, steel. The first pressing bolts 30b are, for example, hexagon socket head bolts.
[0049] 2 and 3, the first pressing member 30a is provided on the sliding plate 28. The sliding plate 28 is provided between the convex area 10a of the base frame 10 and the first pressing member 30a. The first pressing member 30a is fixed to the convex area 10a of the base frame 10 by the first pressing bolt 30b.
[0050] As shown in Fig. 4, the first presser bolt 30b passes through a first through-hole 30ax provided in the first presser member 30a. The first presser bolt 30b penetrates the first presser member 30a and the slide plate 28. The first presser bolt 30b is fitted into a first screw hole 10x provided in the convex region 10a, thereby fixing the first presser member 30a to the convex region 10a. A female thread is formed inside the first screw hole 10x.
[0051] The method for fixing the first pressing member 30a is not necessarily limited to the above method. For example, the first pressing bolt 30b may pass through the convex region 10a and the first pressing member 30a may be fixed to the convex region 10a using a nut fitted onto the first pressing bolt 30b.
[0052] The sliding plate 28 is fixed to the convex area 10a of the base frame 10 by being pressed down by the first pressing member 30a.
[0053] Fig. 5 is a schematic side view of the tension adjustment mechanism of the first embodiment. Figs. 6 and 7 are schematic top views of the tension adjustment mechanism of the first embodiment. Figs. 8 and 9 are schematic cross-sectional views of the tension adjustment mechanism of the first embodiment. Fig. 8 is a cross-section taken along line BB' in Fig. 6. Fig. 9 is a cross-section taken along line CC' in Fig. 6.
[0054] The tension adjustment mechanism 32 includes a second pressing member 32a (first member), a pair of second pressing bolts 32b (first bolts), an upper clamping member 32c (second member), a lower clamping member 32d (third member), a pair of clamping bolts 32e (second bolts), a tension adjustment bolt 32f (third bolt), and a fixing nut 32g (first nut).
[0055] The second holding member 32a, the upper clamping member 32c, and the lower clamping member 32d are made of, for example, steel. The tension adjusting bolt 32f is, for example, a hexagonal bolt. The second holding bolt 32b and the clamping bolt 32e are, for example, hexagonal socket bolts. The fixing nut 32g is, for example, a hexagonal nut.
[0056] 5 and 6, the second pressing member 32a is provided on the sliding plate 28. The sliding plate 28 is provided between the convex area 10a of the base frame 10 and the second pressing member 32a. The second pressing member 32a is fixed to the convex area 10a of the base frame 10 by the second pressing bolt 32b.
[0057] As shown in Fig. 8, the second presser bolt 32b passes through a second through-hole 32ax provided in the second presser member 32a. The second presser bolt 32b penetrates the second presser member 32a and the slide plate 28. The second presser bolt 32b is fitted into a second screw hole 10y provided in the convex region 10a, thereby fixing the second presser member 32a to the convex region 10a. A female thread is formed on the inner wall of the second screw hole 10y.
[0058] The method for fixing the second pressing member 32a is not necessarily limited to the above method. For example, the second pressing bolt 32b may pass through the convex region 10a, and the second pressing member 32a may be fixed to the convex region 10a using a nut fitted onto the second pressing bolt 32b.
[0059] FIG. 7 is a top view of FIG. 6, omitting second pressing member 32a, second pressing bolt 32b, upper clamping member 32c, clamping bolt 32e, tension adjusting bolt 32f, and fixing nut 32g.
[0060] 7, the sliding plate 28 is provided with a first opening 28a so that the second presser bolt 32b can pass through. The first opening 28a extends in the mold opening / closing direction. The extension of the first opening 28a in the mold opening / closing direction ensures that the second presser bolt 32b will fit into the second screw hole 10y even if the sliding plate 28 moves or expands / contracts in the mold opening / closing direction.
[0061] The sliding plate 28 is fixed to the convex area 10a of the base frame 10 by being pressed down by the second pressing member 32a.
[0062] 5, the upper clamping member 32c is provided on a sliding plate 28. The sliding plate 28 is provided between the base frame 10 and the upper clamping member 32c. A second pressing member 32a is provided between the upper clamping member 32c and the fixing mechanism 30.
[0063] 5, the lower clamping member 32d is provided below the sliding plate 28. The lower clamping member 32d is provided between the upper clamping member 32c and the base frame 10. The sliding plate 28 is provided between the upper clamping member 32c and the lower clamping member 32d.
[0064] 8, the clamping bolt 32e passes through a third through-hole 32cx1 provided in the upper clamping member 32c. The clamping bolt 32e penetrates the upper clamping member 32c and the sliding plate 28. The clamping bolt 32e is fitted into a third screw hole 32dx provided in the lower clamping member 32d, thereby fixing the sliding plate 28 between the upper clamping member 32c and the lower clamping member 32d.
[0065] A female screw is formed on the inside of the third screw hole 32dx. The female screw provided on the inner wall of the third screw hole 32dx is an example of a second female screw.
[0066] As shown in FIG. 7, the slide plate 28 is provided with a second opening 28b through which the clamping bolt 32e passes and which can be fitted into the third screw hole 32dx.
[0067] 5 and 6, the tip of the tension adjusting bolt 32f can come into contact with the side surface of the second pressing member 32a. An upper clamping member 32c is provided between the head of the tension adjusting bolt 32f and the second pressing member 32a.
[0068] 9, the tension adjustment bolt 32f passes through the upper clamping member 32c. The tension adjustment bolt 32f passes through a fourth screw hole 32cx2 provided in the upper clamping member 32c. The tension adjustment bolt 32f is fitted into the fourth screw hole 32cx2.
[0069] A female screw is formed on the inside of the fourth screw hole 32cx2. The female screw provided on the inner wall of the fourth screw hole 32cx2 is an example of a first female screw.
[0070] As shown in Fig. 6, the tension adjusting bolt 32f is provided between the pair of sandwiching bolts 32e. As shown in Fig. 6, the tension adjusting bolt 32f is provided so as to pass between the pair of sandwiching bolts 32e.
[0071] 5, 6 and 9, the fixing nut 32g is fitted onto the tension adjusting bolt 32f. The fixing nut 32g is provided between the head of the tension adjusting bolt 32f and the upper clamping member 32c.
[0072] Next, an example of a method for adjusting the tension of the slide plate of the molding machine of the first embodiment will be described.
[0073] 10, 11, and 12 are explanatory diagrams of the method for adjusting the tension of the sliding plate according to the first embodiment, and are side views corresponding to FIG.
[0074] For example, when the sliding plate 28 is attached to the base frame 10 , one end of the sliding plate 28 is fixed to the base frame 10 using the fixing mechanism 30 .
[0075] 10, the other end of the sliding plate 28 is temporarily fixed to the base frame 10 using the second pressing member 32a. At this time, the sliding plate 28 is not completely fixed to the base frame 10.
[0076] As shown in FIG. 10, the slide plate 28 is fixed between the upper clamping member 32c and the lower clamping member 32d using a clamping bolt 32e.
[0077] As shown in Fig. 10, the tip of the tension adjustment bolt 32f is not in contact with the side surface of the second holding member 32a. When the tip of the tension adjustment bolt 32f is not in contact with the side surface of the second holding member 32a, the lower clamping member 32d and the base frame 10 are spaced apart in the direction of gravity. When the tip of the tension adjustment bolt 32f is not in contact with the side surface of the second holding member 32a, the distance between the lower clamping member 32d and the base frame 10 (d in Fig. 10) is, for example, 0.1 mm or more and 1.0 mm or less.
[0078] As shown in FIG. 10, the fixing nut 32g is spaced apart from the side surface of the second pressing member 32a.
[0079] Next, as shown in Figure 11, the tension adjustment bolt 32f is advanced in the mold opening direction, and the tip of the tension adjustment bolt 32f comes into contact with the side surface of the second pressing member 32a. Furthermore, by tightening the tension adjustment bolt 32f with a torque wrench and advancing it in the mold opening direction, the sliding plate 28 fixed between the upper clamping member 32c and the lower clamping member 32d is stretched in the mold closing direction. Tension is applied to the sliding plate 28 in the mold opening / closing direction. The tension of the sliding plate 28 is adjusted by adjusting the setting of the torque wrench.
[0080] 12, the fixing nut 32g is advanced in the mold opening direction until the fixing nut 32g comes into contact with the side surface of the second pressing member 32a. The fixing nut 32g is then tightened to fix the position of the tension adjusting bolt 32f relative to the upper clamping member 32c.
[0081] Next, the second press bolt 32b is tightened, and the other end of the sliding plate 28 is completely fixed to the base frame 10 using the second press member 32a.
[0082] In the above manner, the tension of the slide plate 28 of the die casting machine 100 is adjusted.
[0083] Next, the operation and effects of the molding machine of the first embodiment will be described.
[0084] Fig. 13 is a schematic side view of a tension adjusting mechanism of a comparative example, and corresponds to Fig. 5 of the first embodiment.
[0085] The tension adjustment mechanism 32 of the comparative example differs from the tension adjustment mechanism 32 of the first embodiment in that the tension adjustment bolt 32f passes through the lower clamping member 32d and the tip of the tension adjustment bolt 32f contacts the side of the convex area 10a of the base frame 10.
[0086] 14 is a side view corresponding to FIG. 13, showing the operation of the tension adjusting mechanism of the comparative example.
[0087] 14, the arrow indicates the direction of the tensile force applied to the sliding plate 28 when the tension adjustment bolt 32f is tightened. In the case of the tension adjustment mechanism 32 of the comparative example, the tension adjustment bolt 32f is located below the sliding plate 28, so the tensile force applied to the sliding plate 28 has an upward component in addition to a horizontal component (the mold opening / closing direction).
[0088] In the tension adjustment mechanism 32 of the comparative example, after a tensile force is applied to the sliding plate 28, the sliding plate 28 is fixed to the base frame 10 by the second presser member 32a. Since the tensile force applied to the sliding plate 28 has an upward component, the sliding plate 28 fixed to the base frame 10 is likely to bend. If the sliding plate 28 is bent, for example, when the movable die plate 14 slides on the sliding plate 28 in the mold opening / closing direction, the sliding plate 28 is likely to be deformed, and there is a risk that the sliding plate 28 may be damaged.
[0089] 15 is a diagram showing the operation of the tension adjusting mechanism of the first embodiment, and is a side view corresponding to FIG.
[0090] 15, the arrow indicates the direction of the tensile force applied to the sliding plate 28 when the tension adjustment bolt 32f is tightened. In the case of the tension adjustment mechanism 32 of the first embodiment, the tip of the tension adjustment bolt 32f is located above the sliding plate 28, so the tensile force applied to the sliding plate 28 has a downward component in addition to a horizontal component (the mold opening / closing direction).
[0091] After the pulling force is applied to the sliding plate 28, the sliding plate 28 is fixed to the base frame 10 by the second pressing member 32a. Since the pulling force applied to the sliding plate 28 has a downward component, the sliding plate 28 fixed to the base frame 10 is less likely to bend compared to the comparative example. Therefore, for example, when the movable die plate 14 slides on the sliding plate 28 in the mold opening / closing direction, the sliding plate 28 is less likely to deform, and damage to the sliding plate 28 is suppressed.
[0092] 10, it is preferable that the lower clamping member 32d and the base frame 10 are spaced apart in the direction of gravity when the tip of the tension adjustment bolt 32f is not in contact with the side surface of the second pressing member 32a. If the lower clamping member 32d and the base frame 10 are not spaced apart in the direction of gravity, when the tension adjustment bolt 32f is tightened and the sliding plate 28 is pulled downward, the lower clamping member 32d will interfere with the base frame 10, making it difficult to pull the sliding plate 28 downward.
[0093] From the viewpoint of pulling the sliding plate 28 downward, when the tip of the tension adjustment bolt 32f is not in contact with the side surface of the second pressing member 32a, the distance (d in FIG. 10) between the lower clamping member 32d and the base frame 10 is preferably 0.1 mm or more, more preferably 0.3 mm or more, and even more preferably 0.5 mm or more.
[0094] On the other hand, if the sliding plate 28 is pulled downward and bends downward too much, there is a risk of damage to the sliding plate 28. Therefore, from the viewpoint of preventing the sliding plate 28 from bending downward too much, it is preferable that the distance (d in FIG. 10) between the lower clamping member 32d and the base frame 10 be 1.0 mm or less when the tip of the tension adjustment bolt 32f is not in contact with the side surface of the second pressing member 32a.
[0095] From the viewpoint of suppressing deformation and wear of the sliding plate 28, it is preferable that the hardness of the material of the sliding plate 28 is greater than the hardness of the material of the base frame 10. From the viewpoint of suppressing deformation and wear of the sliding plate 28, it is preferable that the material of the sliding plate 28 and the material of the base frame 10 are steel, and that the carbon concentration of the material of the sliding plate 28 is higher than the carbon concentration of the material of the base frame 10. From the viewpoint of suppressing deformation and wear of the sliding plate 28, it is preferable that the material of the sliding plate 28 is tool steel.
[0096] (Variation) The tension adjustment mechanism of the modified example of the first embodiment differs from the first embodiment in that a first nut is provided between the first member and the second member.
[0097] Fig. 16 is a side view of a tension adjustment mechanism according to a modified example of the first embodiment, and corresponds to Fig. 5 of the first embodiment.
[0098] In the modified tension adjustment mechanism 32, a fixing nut 32g (first nut) is provided between the second pressing member 32a (first member) and the upper clamping member 32c (second member).
[0099] In the tension adjustment mechanism 32 of the modified example, similarly to the tension adjustment mechanism 32 of the first embodiment, the position of the tension adjustment bolt 32f relative to the upper clamping member 32c can be fixed by tightening the fixing nut 32g.
[0100] As described above, according to the first embodiment and the modified example, a die casting machine that can suppress damage to the sliding plate by using a tension adjustment mechanism can be realized.
[0101] (Second embodiment) The molding machine of the second embodiment differs from the molding machine of the first embodiment in that the tension adjustment mechanism is provided between the movable die plate and the link housing. In the following, some of the description overlapping with the first embodiment may be omitted.
[0102] Fig. 17 is a schematic diagram showing the overall configuration of a molding machine of the second embodiment. Fig. 17 is a diagram corresponding to Fig. 1 of the first embodiment. The molding machine of the second embodiment is a die-casting machine 200.
[0103] 17, the tension adjustment mechanism 32 of the die casting machine 200 is provided between the movable die plate 14 and the link housing 16. The fixing mechanism 30 of the die casting machine 200 is provided between the movable die plate 14 and the fixed die plate 12.
[0104] In the die casting machine 200 as well, when the movable die plate 14 slides on the slide plate 28 in the die opening / closing direction, deformation of the slide plate 28 is less likely to occur, and damage to the slide plate 28 is suppressed.
[0105] As described above, according to the second embodiment, a die casting machine that can suppress damage to the sliding plate by using a tension adjustment mechanism can be realized.
[0106] In the first and second embodiments, a die-casting machine that fills a mold with molten metal has been described as an example of a molding machine, but the present invention can also be applied to, for example, an injection molding machine that fills a mold with resin material.
[0107] The embodiments of the present invention have been described above with reference to specific examples. However, the present invention is not limited to these specific examples. In the embodiments, parts of the molding machine and the like that are not directly necessary for the explanation of the present invention have been omitted, but necessary elements related to the molding machine and the like can be appropriately selected and used.
[0108] In addition, all molding machines that incorporate the elements of the present invention and that can be appropriately modified by those skilled in the art are encompassed within the scope of the present invention, which is defined by the claims and their equivalents. [Explanation of symbols]
[0109] 10 Base Frame 10a convex area 10x Primary Screw Holes 10y Second screw hole 12 Fixed die plate 14 Movable die plate 16 Link housing 18 Mold 18a Fixed mold 18b Movable mold 20 Link mechanism 21 Mold clamping cylinder 22 Tie bar 24 Injection device 26 Extrusion equipment 28 Slide 28a First opening 28b Second opening 30 Fixing mechanism 30a first pressing member 30ax First Through Hole 30b First retaining bolt 32 Tension adjustment mechanism 32a Second pressing member (first member) 32ax second through hole 32b Second holding bolt (first bolt) 32c Upper clamping member (second member) 32cx1 3rd through hole 32cx2 4th screw hole 32d Lower clamping member (third member) 32dx 3rd screw hole 32e Pinching bolt (second bolt) 32f Tension adjustment bolt (third bolt) 32g Fixing nut (first nut) 100 Die-casting machines (molding machines) 200 Die-casting machine (molding machine) Ca cavity
Claims
1. A base frame; a sliding plate provided on the base frame; a fixed die plate provided on the base frame and fixed to the base frame; a link housing provided on the base frame; a movable die plate provided between the link housing and the fixed die plate and slidably mounted on the slide plate; a fixing mechanism for fixing one end of the sliding plate to the base frame; a tension adjustment mechanism provided on the other end of the sliding plate for adjusting the tension of the sliding plate, The tension adjustment mechanism includes: a first member between which the sliding plate is provided and the base frame; a first bolt that fixes the first member to the base frame; a second member having a first female screw, the first member being provided between the second member and the fixing mechanism, and the sliding plate being provided between the second member and the base frame; a third member provided between the second member and the base frame, the third member having the sliding plate provided between the second member and the third member; a second bolt that passes through the second member and fixes the second member and the third member; a third bolt that penetrates the second member, has a tip portion and a head portion, is fitted into the first female thread, the tip portion is capable of contacting the first member, and the second member is provided between the head portion and the first member.
2. 2. The molding machine according to claim 1, wherein the tension adjustment mechanism further includes a first nut provided between the head and the second member or between the first member and the second member and fitted onto the third bolt.
3. 2. The molding machine according to claim 1, wherein the third member and the base frame are spaced apart in the direction of gravity when the tip portion is not in contact with the first member.
4. 4. The molding machine according to claim 3, wherein the distance between the third member and the base frame is 0.1 mm or more and 1.0 mm or less when the tip portion is not in contact with the first member.
5. 2. The molding machine according to claim 1, wherein the third member has a second female screw into which the second bolt is fitted.
6. 2. The molding machine according to claim 1, wherein the second bolts include a pair of bolts, and the third bolt is provided between the pair of bolts.
7. 2. The molding machine according to claim 1, wherein the tension adjusting mechanism is provided between the movable die plate and the fixed die plate.
8. the stationary die plate is capable of holding a stationary die; the movable die plate is capable of holding a movable die; 2. The molding machine according to claim 1, further comprising an injection device that supplies a liquid material into a cavity formed between the fixed mold and the movable mold.
9. 9. The molding machine according to claim 8, wherein the liquid material is a liquid metal.
10. 2. The molding machine according to claim 1, wherein the hardness of the material of said slide plate is greater than the hardness of the material of said base frame.
11. 2. The molding machine of claim 1, wherein the slide plate is made of tool steel.
12. 2. The molding machine according to claim 1, wherein the thickness of the sliding plate is 1 mm or more and 5 mm or less.
Citation Information
Patent Citations
Molding machine
JP2002240115A