JP2020116915A - Resin molding device, and method for manufacturing resin molding - Google Patents

Abstract

To maintain flatness of a molding die irrespective of deformation of a platen.SOLUTION: A resin molding device includes molding dies 2 and 3, platens 41 and 42 on which the molding dies 2 and 3 are molded, and a plurality of first transmission members 5 which are provided between the molding dies 2 and 3 and the platens 41 and 42 and transmit a mold closing force from the platens 41 and 42 to the molding dies 2 and 3, in which the plurality of first transmission members 5 have a contact surface 6a that transmits the mold closing force and has a convex surface.SELECTED DRAWING: Figure 1

Description

The present invention relates to a resin molding device and a method for manufacturing a resin molded product.

In the resin molding apparatus by compression molding, the platen to which the molding die is attached is deformed during mold clamping. Then, the mold attached to the platen is also deformed due to the deformation of the platen.

Conventionally, in order to suppress the deformation of the platen, the rigidity of the platen has been increased such as by increasing the thickness of the platen, resulting in an increase in size and weight of the resin molding apparatus.

On the other hand, as shown in Patent Document 1, a resin sealing device in which a movable platen on which a lower mold is arranged is divided into a lower movable platen and an upper movable platen is considered. Here, the lower movable platen is connected to the pressing mechanism, and the upper movable platen has a lower die and is supported so as to be slidable in the vertical direction by a linear guide provided in the main body of the resin sealing device. ing. In this resin sealing device, the lower movable platen and the upper movable platen are in point contact with each other to maintain the parallelism of the lower mold with respect to the upper mold.

JP, 2009-39866, A

However, in the above resin sealing device, when the top plate which is the upper platen and the upper movable platen are curved, the upper mold and the lower mold attached to them are also curved. It is difficult to maintain the flatness of the lower mold.

Therefore, the main object of the present invention is to maintain the flatness of the mold regardless of the deformation of the platen to which the mold is attached.

That is, the resin molding apparatus according to the present invention is provided between a molding die, a platen to which the molding die is attached, the molding die and the platen, and a plurality of mold clamping forces that are transmitted from the platen to the molding die. A first transmission member, wherein each of the plurality of first transmission members has a convex curved contact surface for transmitting the mold clamping force.

According to the present invention thus configured, the flatness of the molding die can be maintained regardless of the deformation of the platen.

It is a front view which shows typically the structure of the resin molding apparatus of this embodiment. It is an expanded sectional view of the 1st transmission member and the 2nd transmission member of the embodiment. It is sectional drawing which mainly shows the 2nd platen and fixed side block of the same embodiment. It is an expanded sectional view of an elastic holding part of a fixed side block of the embodiment. It is an expanded sectional view of a positioning part of a fixed side block of the embodiment. It is sectional drawing which mainly shows the 1st platen and movable side block of the same embodiment. It is a figure which shows the simulation result by the structure of the same embodiment. It is an expanded sectional view of the 1st transmission member and the 2nd transmission member of a modification. It is an expanded sectional view of an elastic holding part of a modification.

Next, the present invention will be described in more detail with reference to examples. However, the present invention is not limited by the following description.

As described above, the resin molding apparatus of the present invention is provided between the molding die, the platen to which the molding die is attached, the molding die and the platen, and transmits the mold clamping force from the platen to the molding die. A plurality of first transmission members, wherein the plurality of first transmission members have a convex curved contact surface for transmitting the mold clamping force.
In this resin molding apparatus, since the plurality of first transmission members provided between the molding die and the platen have the contact surface of the convex curved surface that transmits the mold clamping force, the case where the platen is deformed Also, the convex curved contact surface absorbs the deformation of the platen, and the flatness of the mold can be maintained.

Here, the plurality of first transmission members enable relative deformation of the platen with respect to the molding die by the convex curved contact surface, and the deformation amount of the molding die is smaller than the deformation amount of the platen. To do. Preferably, the plurality of first transmission members do not transmit the deformation amount of the platen to the molding die by the convex curved contact surface.

As a specific embodiment, the plurality of first transmission members are provided on one side of the mold or the platen, and the plurality of first transmission members are provided on the other side of the mold or the platen. It is preferable that a plurality of second transmission members provided correspondingly be further provided, and a contact surface of the first transmission member with respect to the second transmission member has a convex curved surface shape. Like the first transmission member, the second transmission member transmits the mold clamping force from the platen to the molding die.
By thus providing the first transmission member on one side of the molding die or platen and providing the second transmission member on the other side of the molding die or platen, a space is formed between the molding die and the platen. .. Since this space functions as a heat insulating layer, it is possible to reduce the heat transferred from the mold to the platen and suppress the heat radiation to the outside. Further, when parts replacement is required due to wear or damage on the contact surface, at least one of the first transmission member and the second transmission member may be replaced, and therefore maintenance can be facilitated.

The contact surface of the second transmission member with respect to the first transmission member is preferably a flat surface or a concave curved surface smaller than the curvature of the convex curved contact surface.

In order to absorb the deformation and prevent the molding die from being deformed regardless of the deformation mode of the platen, it is preferable that the convex curved surface is spherical.

It is considered that the resin molding apparatus has a lower mold and an upper mold as the molding mold, and has a first platen to which the lower mold is attached and a second platen to which the upper mold is attached as the platen. To be
In this configuration, in order to maintain both the flatness of the upper mold and the flatness of the lower mold when the mold is clamped, the plurality of first transmission members are provided between the upper mold and the second platen, and , Is preferably provided between the lower mold and the first platen. Further, with this configuration, the parallelism between the upper mold and the lower mold can be maintained.

In the resin molding device, it is preferable that an intermediate block is provided between the molding die and the platen, and the plurality of first transmission members are fixed to the platen or the intermediate block.
With this configuration, when the plurality of first transmission members are fixed to the intermediate block, the plurality of first transmission members can be attached at once by attaching the intermediate block to the molding die or the platen, and the replacement can be performed. The work can be simplified.

When the mold or the intermediate block is fixed to the platen with bolts, if the tightening force is increased, the mold or the intermediate block is deformed starting from the contact surface of the first transmission member. Then, the flatness of the mold may be impaired before the mold is clamped.
In order to solve this problem, it is desirable that the resin molding device includes an elastic holding portion that elastically holds the molding die with respect to the platen.

Since the contact surface of the first transmission member is formed into a convex curved surface so that the platen can be relatively deformed with respect to the mold, the position of the mold with respect to the platen may be displaced.
Therefore, it is preferable that the resin molding device includes a positioning portion that is provided inside the plurality of first transmission members and that positions the platen and the molding die. It should be noted that allowing the platen to change relative to the forming die can also be expressed as allowing the platen to change independently of the forming die.

Further, a method of manufacturing a resin molded product using the resin molding device described above is also an aspect of the present invention.

<One Embodiment of the Present Invention>
An embodiment of the resin molding device according to the present invention will be described below with reference to the drawings. It should be noted that any of the drawings described below are schematically omitted or exaggerated as appropriate for the sake of clarity. The same components are given the same reference numerals and the description thereof will be omitted as appropriate.

The resin molding apparatus 100 according to the present embodiment manufactures a resin molded product by sealing the component mounting surface on which the electronic component is mounted on the substrate on which the electronic component is mounted with resin. Examples of the substrate include a metal substrate, a resin substrate, a glass substrate, a ceramic substrate, a circuit substrate, a semiconductor substrate, a lead frame, and the like. As the resin material, in addition to a granular or powdery resin material, a liquid material, a sheet shape, a tablet shape, or the like can be used.

As shown in FIG. 1, the resin molding apparatus 100 includes a lower mold 2 that is a first molding mold having a cavity, an upper mold 3 that is a second molding mold that holds a substrate, and a lower mold 2. And a mold clamping mechanism 4 for clamping the lower mold 2 and the upper mold 3 while the upper mold 3 is attached.

The mold clamping mechanism 4 includes a movable plate 41 (hereinafter also referred to as a first platen 41) to which the lower mold 2 is attached, and an upper fixed plate 42 (hereinafter also referred to as a second platen 42) to which the upper mold 3 is attached. , And a drive mechanism 43 for moving the first platen 41 up and down.

The lower mold 2 is attached to the upper surface of the first platen 41, and is supported by a plurality of support columns 45 provided on the lower fixed platen 44 so as to be vertically movable. In the present embodiment, the first platen 41 is supported so as to be movable up and down, for example, by four pillar portions (also referred to as tie bars) 45 provided at four corners of the lower fixing plate 44 having a rectangular shape in plan view.

The upper plate 3 is attached to the lower surface of the second platen 42, and is fixed so as to face the first platen 41 at the upper ends of the four support columns 45.

The drive mechanism 43 is provided between the first platen 41 and the lower fixed platen 44, and moves the first platen 41 up and down to clamp the lower mold 2 and the upper mold 3, and a predetermined mold clamping force ( Molding pressure) is applied. The drive mechanism 43 of the present embodiment is of a direct drive type that transmits rotation to a first platen 41 using a ball screw mechanism 431 that converts the rotation of a servo motor or the like into a linear movement. For example, a link system may be used in which a link mechanism such as a toggle link is used to transmit to the first platen 41.

Then, a lower mold holding portion 46 that holds the lower mold 2 is provided between the lower mold 2 and the first platen 41. The lower die holding portion 46 has a heater plate or the like for heating the lower die 2.

An upper die holding portion 47 that holds the upper die 3 is provided between the upper die 3 and the second platen 42. The upper die holding portion 47 has a heater plate or the like for heating the upper die 3.

In the present embodiment, a plurality of first transmission members 5 and a plurality of second transmission members 6 are provided between the upper die 3 and the second platen 42 and between the lower die 2 and the first platen 41. There is.

The plurality of first and second transmission members 5 and 6 between the upper die 3 and the second platen 42 transmit the mold clamping force of the drive mechanism 43 from the second platen 42 to the upper die 3. Further, the plurality of first and second transmission members 5 and 6 between the lower die 2 and the first platen 41 transmit the mold clamping force of the drive mechanism 43 from the first platen 41 to the lower die 2. The first and second transmission members 5 and 6 are, for example, cylindrical pillars made of metal.

In this embodiment, four first and second transmission members 5 and 6 are provided between the platens 41 and 42 and the molding dies 2 and 3, corresponding to the four support columns 45. Specifically, it is provided so as to be located at the apex of the quadrangle in plan view.

The plurality of first transmission members 5 are provided on the first platen 41 and the second platen 42, and the plurality of second transmission members 6 correspond to the first transmission member 5 on the lower die 2 side and the upper die 3 side. Is provided. Then, on the second platen 42 side, the lower end surface of the first transmission member 5 and the upper end surface of the second transmission member 6 become contact surfaces 5a, 6a that contact each other, and on the first platen 41 side, the upper surface of the first transmission member 5 is formed. The end surface and the lower end surface of the second transmission member 6 serve as contact surfaces 5a and 6a that contact each other. Here, the contact surface 5a becomes a convex curved contact surface.

Here, the plurality of first and second transmission members 5 and 6 enable the relative deformation of the first platen 41 or the second platen 42 with respect to the lower mold 2 or the upper mold 3, while at the same time providing the first mold clamping force. The platen 41 or the second platen 42 is configured to be transmitted to the lower mold 2 or the upper mold 3.

Specifically, as shown in FIG. 2, the contact surface 5a of the first transmission member 5 has a convex curved surface shape. The contact surface 5a of the present embodiment has a spherical shape that bulges in a convex shape, and more specifically, has a spherical shape having an apex on the central axis of the first transmission member 5. On the other hand, the contact surface 6a of the second transmission member 6 is flat. As a result, the first transmission member 5 and the second transmission member 6 are in point contact with each other. As a result, the deformation amount of the lower mold 2 becomes smaller than the deformation amount of the first platen 41, and the deformation amount of the upper mold 3 becomes smaller than the deformation amount of the second platen 42. When the effects of these configurations are most remarkable, the amount of deformation of the first platen 41 or the second platen 42 is not transmitted to the lower mold 2 or the upper mold 3 by the convex curved contact surface 5a, and the first platen 41 The amount of deformation of the lower mold 2 due to the amount of deformation of No. 2 becomes zero, and the amount of deformation of the upper mold 3 due to the amount of deformation of the second platen 42 becomes zero.

In the present embodiment, the plurality of second transmission members 6 provided on the upper mold 3 are fixed to the intermediate block 7A (hereinafter, also referred to as fixed side block 7A). The fixed block 7A is fixed to the upper die holding portion 47 that holds the upper die 3. As a result, the plurality of second transmission members 6 are provided on the upper mold 3. Further, the plurality of second transmission members 6 provided on the lower mold 2 are fixed to the intermediate block 7B (hereinafter, also referred to as the movable block 7B). The movable block 7B is fixed to the lower mold holding portion 46 that holds the lower mold 2. As a result, the plurality of second transmission members 6 are provided on the lower mold 2.
In this embodiment, the first transmission member 5 and the second transmission member 6 are interposed between the second platen 42 and the upper die 3, the upper die holding portion 47, and the fixed block 7A. In addition, the first transmission member 5 and the second transmission member 6 are slidably attached to the column portion 45 directly or via a mounting member, the first platen 41, the lower mold 2, and the lower mold. It will be interposed between the holding part 46 and the movable block 7B.

Next, the peripheral structure of the second platen 42 and the fixed block 7A will be described with reference to FIG. In FIG. 3, the upper mold 3 and the upper mold holding portion 47 are not shown.

The resin molding device 100 of the present embodiment has the elastic holding portion 8 that elastically holds the upper mold 3 with respect to the second platen 42.

As shown in FIG. 4, the elastic holding portion 8 includes a bolt 81 that is inserted into a through hole 7h formed in the fixed block 7A and fastened to the second platen 42, a head portion 811 of the bolt 81, and a fixed side. An elastic body 82 is provided between the block 7A and the block 7A.

The through hole 7h formed in the fixed block 7A has a small diameter portion 7h1 into which the shaft portion 812 of the bolt 81 is inserted and a large diameter portion 7h2 that accommodates the head portion 811 of the bolt 81. An elastic body 82, such as a spring, is provided between the inner surface of the through hole 7h and the head portion 811 of the bolt 81.

With such a configuration, the elastic body 82 and the bolt 81 are inserted into the through hole 7h, and the bolt 81 is fastened to the second platen 42, whereby the inner surface of the through hole 7h of the fixed block 7A and the head portion 811 of the bolt 81. The elastic body 82 is sandwiched between and, and the elastic force acts so as to press the fixed block 7A against the second platen 42, and the fixed block 7A and the upper die 3 are elastically held. In this elastically held state, the contact surface 6a of the second transmission member 6 of the fixed-side block 7A and the contact surface 5a of the first transmission member 5 of the second platen 42 press and contact.

Further, by fixing the fixed block 7A to the second platen 42, a space is formed between the second platen 42 and the fixed block 7A by the first transmission member 5 and the second transmission member 6, and this space is Functions as a heat insulating layer. As a result, the heat transferred from the upper die holding portion 47 holding the upper die 3 to the second platen 42 is reduced, and the heat radiation to the outside is suppressed.

If the bolt 81 is tightened too much, the fixed block 7A may be deformed by the force received from the first transmission member 5 and the force received from the bolt 81. When the fixed block 7A is deformed, the upper die holding portion 47 and the upper die 3 are also deformed.

Therefore, the elastic holding portion 8 of the present embodiment further includes a distance regulating portion 83 that regulates the distance between the second platen 42 and the fixed block 7A. The distance restricting portion 83 is inserted into the through hole 7h of the fixed block 7A together with the bolt 81 and comes into contact with the second platen 42 and the head portion 811 of the bolt 81, so that the second platen 42 and the fixed block 7A. Regulate the distance between and. Specifically, the distance restricting portion 83 has a cylindrical shape into which the shaft portion 812 of the bolt 81 is inserted, one axial end surface of which contacts the lower surface of the second platen 42, and the other axial end surface of the bolt 81. Contact the head 811.

The distance restricting portion 83 determines the distance between the second platen 42 and the head portion 811 of the bolt 81, and the amount of deformation of the elastic body 82 provided between the head portion 811 of the bolt 81 and the fixed block 7A. .. As a result, the elastic force applied from the elastic body 82 to the fixed block 7A becomes constant. That is, the distance regulating section 83 regulates the distance between the second platen 42 and the fixed block 7A, the amount of deformation of the elastic body 82 is determined, and the elastic force applied to the fixed block 7A becomes constant.

Further, since the fixed block 7A is held in a floating state with respect to the second platen 42, the fixed block 7A and the upper mold 3 fixed thereto may be displaced from the second platen 42. There is.

Therefore, in the present embodiment, as shown in FIG. 3, a positioning portion 9A for positioning the upper die 3 with respect to the second platen 42 is provided. Specifically, as shown in FIG. 5, the positioning portion 9A includes positioning holes 91 and 92 formed in the second platen 42 and the fixed block 7A, and a positioning pin 93 inserted into the positioning holes 91 and 92. Composed of. In the present embodiment, the positioning pin 93 is fitted and fixed in the positioning hole 91, and the positioning pin 93 is inserted in the positioning hole 92 so as to be movable in the axial direction thereof. good.

Here, in the state where the fixed block 7A is fixed to the second platen 42, the positioning portion 9A is configured to be able to absorb the deformation of the second platen 42 with respect to the upper mold 3 during mold clamping. Specifically, a gap is formed between the bottom surface of the positioning hole 92 and the upper end surface of the positioning pin 93, and the positioning pin 93 is slidable with respect to the positioning hole 92. In FIG. 5, the portion of the positioning pin 93 that fits into the positioning hole 91 is the large diameter portion 931 and the portion that is inserted into the positioning hole 92 is the small diameter portion 932. A gap is also formed between the upper surface of the step portion formed between the large diameter portion 931 and the small diameter portion 932 and the lower surface of the second platen 42. The positioning portion 9A may be configured such that the positioning pin 93 has an equal cross-sectional shape in the axial direction.

Next, the peripheral structure of the first platen 41 and the movable block 7B will be described with reference to FIG. Note that, in FIG. 6, the lower mold 2 and the lower mold holding portion 46 are not shown.

As shown in FIG. 6, the movable block 7B to which the lower mold 2 is fixed is placed on the first platen 41. Specifically, the second transmission member 6 of the movable block 7B is placed on the first transmission member 5 of the first platen 41.

In addition, when the movable block 7B is simply placed on the first platen 41, when the lower mold 2 and the upper mold 3 are opened, the lower mold 2 sticks to the upper mold 3 and the movable block 7B moves to the first mold. The platen 41 may be separated from the platen 41. Therefore, the lower die 2 may be elastically held by the first platen 41 with the same configuration as the elastic holding portion 8 described above.

Further, as shown in FIG. 6, a positioning portion 9B is provided between the first platen 41 and the movable block 7B. Specifically, the positioning portion 9B includes positioning holes 94 and 95 formed in the first platen 41 and the movable block 7B, and positioning pins 96 inserted into the positioning holes 94 and 95. A gap is formed between the bottom surface of the positioning hole 95 and the upper end surface of the positioning pin 96, and the positioning pin 96 is slidable with respect to the positioning hole 95. In the present embodiment, the positioning pin 96 is fitted and fixed in the positioning hole 94, and the positioning pin 96 is inserted in the positioning hole 95 so as to be movable in the axial direction thereof, but the reverse is also true. good. Although the positioning pin 96 has a shape having an equal cross-section in the axial direction, the positioning pin 96 may have a shape having different diameters in the upper and lower portions in the axial direction.

<Effect of this embodiment>
According to the resin molding apparatus 100 of the present embodiment, the plurality of first transmission members 5 provided between the lower mold 2 and the upper mold 3 and the platens 41 and 42 have a convex curved surface shape that transmits the mold clamping force. Since the contact surfaces 5a are provided, even when the platens 41, 42 are deformed, the second transmission member 6 rotates and tilts with respect to the platens 41, 42 from the contact surface 5a having a convex curved surface as a starting point. Therefore, the flatness and parallelism of the lower mold 2 and the upper mold 3 can be maintained regardless of the deformation of the platens 41 and 42. Here, each platen 41, 42 can also be expressed as being locally (partially) inclined with the convex curved contact surface 5a as a starting point.

FIG. 7 shows a simulation result regarding deformation at the time of mold clamping. In this simulation, a force equivalent to that at the time of mold clamping is applied from below the upper mold 3 and from above the lower mold 2.

From this result, the second platen 42 and the first platen 41 are curved and deformed during mold clamping, whereas the fixed block 7A of the upper mold 3 and the movable block 7B of the lower mold 2 are not deformed. It can be seen that the flatness and parallelism of the upper mold 3 and the lower mold 2 are maintained.

This is because the contact surfaces 5a and 6a of the first transmission member 5 and the second transmission member 6 rotate relatively to each other, whereby the deformation of the second platen 42 and the first platen 41 is fixed to the upper mold 3. This is because it is not transmitted to the side block 7A and the movable side block 7B of the lower mold 2. Further, since the first transmission member 5 and the second transmission member 6 are made of metal, it is considered that their elastic deformation also contributes.

Further, since the fixed block 7A and the upper die 3 are elastically held by the elastic holding portion 8, the relative rotation of the first transmission member 5 and the second transmission member 6 is facilitated.

Further, since the positioning portion 9 is provided in the central portion inside the plurality of first and second transmission members 5 and 6, and the clearance is provided in the positioning hole 91 and the positioning pin 93 of the positioning portion 9, the second platen is provided. Positioning can be performed without transmitting the deformation of the platen 42 and the first platen 41 to the fixed block 7A of the upper mold 3 and the movable block 7B of the lower mold 2.

In a conventional resin molding apparatus, when the substrate that is a molding target becomes large, in order to maintain the flatness and parallelism of the molding die, the rigidity of each platen and other components is increased, and the size of the apparatus is increased. Although it is accompanied by weight reduction, in the present embodiment, since such a need is eliminated, it is possible to reduce the size and weight of the device.

<Other modified embodiments>
The present invention is not limited to the above embodiment.

For example, in the above-described embodiment, the contact surface 5a of the first transmission member 5 has a convex curved surface shape and the contact surface 6a of the second transmission member 6 has a flat surface shape. The contact surface 6a of the second transmission member 6 may be a flat surface and may be a convex curved surface.

Further, as shown in FIG. 8, the contact surface 5a of the first transmission member 5 may have a convex curved surface shape, and the contact surface 6a of the second transmission member 6 may have a concave curved surface shape. In this case, the curvature of the concave curved contact surface 6a is smaller than the curvature of the convex curved contact surface 5a. That is, a part of the convex curved contact surface 5a is accommodated in the concave portion of the concave curved contact surface 6a.

Further, regarding the contact surface, the contact surfaces 5a and 6a of the first and second transmission members 5 and 6 may be convex curved surfaces.

The shape of the convex curved surface is not limited to the spherical shape, and may be an elliptical spherical shape or a convex strip extending in one direction. In addition, the convex curved surface may be any shape that allows relative rotation of the first transmission member 5 and the second transmission member 6, and may be, for example, a free curve.

In addition to the configuration including the plurality of first transmission members 5 and the second transmission member 6, the plurality of first transmission members 5 may be provided only on one of the molding dies 2 and 3 or the platens 41 and 42. In this case, the plurality of first transmission members 5 have a contact surface 5a having a convex curved surface shape, and the contact surface 5a comes into contact with the other surface of the molds 2, 3 or the platens 41, 42.

Although the plurality of second transmission members 6 are provided in the intermediate blocks 7A and 7B in the above embodiment, the plurality of first transmission members 5 may be provided in the intermediate block. The plurality of transmission members may be provided on the molding dies 2 and 3 or the molding die holding portions 46 and 47, or the platens 41 and 42 without providing the intermediate blocks.

In the above-described embodiment, the first and second transmission members 5 and 6 are provided at four positions between the molding dies 2 and 3 and the platens 41 and 42, but the first and second transmission members are provided at two or more positions. A configuration in which the members 5 and 6 are provided may be used.

Further, in the above-described embodiment, the first platen 41 is supported by the four support columns 45 so that the first platen 41 can be moved up and down. However, the two support columns 45 support the first platen 41 so that it can be moved up and down. It may be configured. The two support columns 45 are plate-shaped, for example, provided on opposite sides of the rectangular lower fixing plate 44. In this case, it is conceivable that the first and second transmission members 5 and 6 are provided at two locations along the facing direction of the two support columns 45.

In the above embodiment, the first and second transmission members 5 and 6 are provided between the second platen 42 and the upper mold 3 and between the first platen 41 and the lower mold 2, respectively. The first and second transmission members 5 and 6 may be provided between the second platen 42 and the upper mold 3 or between the first platen 41 and the lower mold 2.

Further, a plurality of first and second transmission members 5 and 6 provided between the second platen 42 and the upper mold 3, and a plurality of first and second transmission members provided between the first platen 41 and the lower mold 2. The number of arrangements with the members 5 and 6, the arrangement mode, or the configurations of the first and second transmission members 5 and 6 may be different from each other.

The plurality of first and second transmission members 5 and 6 provided between the second platen 42 and the upper mold 3 or between the first platen 41 and the lower mold 2 change their shapes according to their positions. You may do it.

The fixing structure of the fixed block 7A with respect to the second platen 42 is not limited to the elastic holding portion 8, and the fixing portion 11 shown in FIG. 9 may be used. The fixing portion 11 regulates the distance between the bolt 111, which is inserted into the through hole 7h formed in the fixed block 7A and fastened to the second platen 42, and the distance between the second platen 42 and the fixed block 7A. And a section 112. The distance regulating portion 112 is inserted into the through hole 7h of the fixed side block 7A together with the bolt 111 and comes into contact with the second platen 42 and the head portion 111a of the bolt 111, so that the second platen 42 and the fixed side block 7A. Regulate the distance between and. Specifically, the distance regulating portion 112 has a cylindrical shape into which the shaft portion 111b of the bolt 81 is inserted, one axial end surface of which contacts the lower surface of the second platen 42 and the other axial end surface of the bolt 111. It contacts the head portion 111a.

Further, in the above embodiment, the first platen 41 to which the lower mold 2 is attached is movable as a movable plate, but the second platen 42 to which the upper mold 3 is attached is movable as a movable plate. May be. When the second platen 42 is a movable plate, the first platen 41 may be a fixed plate.

Besides, it goes without saying that the present invention is not limited to the above-described embodiment, and various modifications can be made without departing from the spirit of the present invention.

100... Resin molding device 2... Lower mold (molding mold)
3... Upper mold (molding mold)
41... First platen 42... Second platen 5... First transmission member 5a... Contact surface 6 of first transmission member... Second transmission member 6a... Of second transmission member Contact surface 7A: Fixed side block (intermediate block)
7B: Movable block (intermediate block)
8... Elastic holding portions 9A, 9B... Positioning portion

Claims (10)

Mold and
A platen to which the mold is attached,
A plurality of first transmission members that are provided between the molding die and the platen and that transmit a mold clamping force from the platen to the molding die;
The said 1st transmission member is a resin molding apparatus which has a convex curved-surface-shaped contact surface which transmits the said mold clamping force. The plurality of first transmission members enable relative deformation of the platen with respect to the forming die by the convex curved contact surface, and make the amount of deformation of the forming die smaller than the amount of deformation of the platen. The resin molding device according to claim 1. The plurality of first transmission members are provided on one side of the molding die or the platen,
On the other side of the molding die or the platen, a plurality of second transmission members provided corresponding to the plurality of first transmission members are further provided.
The resin molding apparatus according to claim 1, wherein a contact surface of the first transmission member with respect to the second transmission member has a convex curved surface shape. 4. The contact surface of the second transmission member with respect to the first transmission member has a planar shape or a concave curved surface smaller than the curvature of the convex curved contact surface. Resin molding equipment. 5. The resin molding device according to claim 1, wherein the convex curved surface shape is a spherical surface shape. The mold has a lower mold and an upper mold,
As the platen, a first platen to which a lower mold is attached, and a second platen to which the upper mold is attached,
The plurality of first transmission members are provided between the upper die and the second platen, and between the lower die and the first platen, respectively. The resin molding apparatus according to item. The intermediate block is provided between the mold and the platen, and the plurality of first transmission members are fixed to the platen or the intermediate block. Resin molding equipment. The resin molding apparatus according to claim 1, further comprising an elastic holding portion that elastically holds the mold with respect to the platen. 9. The resin molding apparatus according to claim 1, further comprising a positioning portion that is provided inside the plurality of first transmission members and that positions the platen and the molding die. A method of manufacturing a resin molded product using the resin molding device according to claim 1.