JPS58167135A - Injection-compression molding machine - Google Patents

Abstract

PURPOSE:To obtain resin molding without any strain by a method in which an oil-pressure cylinder is provided to any one of two fixed side die plates, a compression allowance fine regulating mechanism and a retraction or advancing control mechanism are also provided, and the volume of the cavity is increased for a compression allowance. CONSTITUTION:Two fixed side die plates are provided, and mold plates are attached to the inner plate 2 of the fixed side die plate and a movable side die plate 3, an oil-pressure cylinder 13 for compression is provided to the outer plate 1 or inner plate 2 of the fixed side die plate, and compressive operation is made, after injection, by pushing the inner plate 2 or the outer plate 1 by the oil- pressure cylinder 13. Furthermore, by using both the compression allowance fine regulating mechanism 8 and the retraction or advancing control mechanism, the volume of the cavity 10 is increased for a compression allowance, and thereby resin is not changed during the solidification process and therefore, no strain occurs in the resin.

Description

[Detailed description of the invention] The present invention relates to an injection compression molding apparatus.

In injection molding, molten resin is injected into a cavity that is strictly fixed by the mold structure, and the resin from the sprue and runner parts is released from the injection cylinder by an operation called holding pressure until the narrow part of the gate part solidifies. Apply pressure through the cavity to prevent some resin from flowing back,
After the gate is solidified, the heat of the resin in the cavity is transferred to the mold to cool it and produce a product.

The density of the molten resin is usually lower than the density of the solid, and as the molten resin solidifies, its volume decreases, that is, shrinkage occurs. - As an example, consider a product with a thickness of ≠ 100 ff and a wall thickness of 10 fl. Assuming that the resin density is 1.17 in the molten state and 1.20 in the solid state, the volume in the molten state is the volume of the cavity (78, 54
When it solidifies from a state equal to cc) and reaches room temperature, it becomes 76.5
It becomes 7cc. If we now assume that this reduced volume shrinks only in the thickness direction, the thickness of the finished product will be 9.
．． 75ff, resulting in a wall thickness shortage of 0.25111.

In order to deal with such shrinkage, a method of overpacking the mold until it opens slightly at the parting line was considered, and a method of controlling the amount of mold opening at that time (Japanese Patent Laid-Open No. 5
0-1! 19851) and the Rolinx method (“New c
Oncept in 1 injection moldi
ng, Rolinxprocess extended
"application of plastics"
Plastics, 80,880. April, (1965
)) is proposed.

In addition, a small hydraulic cylinder is buried in the mold so that the cavity core can move forward and backward, or an ejector cylinder is used to consciously enlarge the cavity and inject, and after filling is completed, the hydraulic cylinder It was proposed to advance the molding process to make the cavity smaller and obtain a molded product with a predetermined thickness, which is known as the micromolder method (H-Holt: "New techniques").
in shrinkage control”sPE
J.

P519, Jun, (1964)).

Of course, the most basic method is to design a large cavity to account for this shrinkage, but in the case of thick-walled products or products with uneven thickness, such a design is virtually impossible. It is necessary to repeat trial and error.

It has been recognized that the above-mentioned overpacking method also has the disadvantage of requiring high injection pressure, and that when the product has uneven thickness, the shrinkage correction effect is limited at the thin wall portion where shrinkage is small. In the case of the micromolder method, the cylinder drum advances as it contracts, and although the product surface on the moving core side is produced with good precision, the facing precision is not sufficient.

In view of this current situation, ENGEL (LUDWIGENG) has developed an injection compression molding method that uses mold clamping force to perform compression operations.
EL KG MACHINEN FABRIK, A-4
8115CHWE-RTBERG AUSTRIA)
This method is revolutionary in that it uses the toggle-type mold clamping force as compression pressure, so the toggle is held so that it is not fully extended during the injection process, and is fully extended during the compression process. It is.

However, the toggle compression method has the disadvantage that the compression pressure cannot be controlled. The necessity of controlling the compression pressure can be explained using the PVT curve showing the relationship between "pressure applied to the resin - specific volume of the resin - temperature of the resin" as follows. The horizontal axis shows the resin temperature T, the vertical axis shows the specific volume V of the resin, and the relationship between V and T of the resin under a constant added pressure P (which can be thought of as the pressure of the resin as a reaction). The PVT curve shown in FIG. 1 shows this.

Using the above-mentioned injection compression molding device, let's follow this graph to see how resin is injected into the mold cavity, compressed, and taken out. Injection-Pope end point (■→P) (A
), there is a process ([F]) in which the resin pressure increases while the resin temperature decreases due to injection, and even after pressure retention is completed, the resin temperature continues to decrease and the volume contracts because there is no external pressure. The specific volume is 11 [F] when the pressure is low.
) - extension). If the compression operation is performed with the toggle fully extended while taking into account backflow, the resin pressure will increase while the resin temperature has hardly cooled, resulting in a process failure.

If the toggle is fully extended at this time, then the resin temperature will drop and the pressure will decrease.
It is. At this time, the specific volume decreases, so the resin is moved, and pressure is applied to the resin at the portion where the fluidity is poor, causing distortion. After this, when the mold is opened after reaching the ejecting temperature, the resin pressure becomes a process in which the specific volume increases due to the decrease in external pressure @) - (F), and the process in which the resin temperature reaches room temperature under atmospheric pressure (F ) -C) follows to complete the molding.

The molding shrinkage rate in this case can be determined from the difference in specific volume between (6) and C). In the toggle compression method, the length of the arm is fixed, so the pressure is adjusted by positioning, but the pressure varies depending on the mold temperature, tie bar temperature, and position settings, so it is difficult to fix the pressure. . For this reason, it is difficult to control the compression pressure, and on the PVT curve, the end point when the toggle is fully extended is (c).
It is unclear whether it is true or not, and it is impossible to control it.

On the other hand, in the compression method using direct pressure hydraulic pressure, the maximum compression pressure can be precisely adjusted, and as shown in Figure 2, compression is performed so that the specific volume of the resin remains constant as the resin temperature decreases. If the pressure is controlled to decrease, the resin will not deform at all during the solidification process, so no distortion will occur. This shows that if the steps (A) to 1) in the upper part of FIG. 2 are followed, molding with a constant molding shrinkage rate is possible. In this case, the difference in volume between the cavity and the resin is the difference in specific volume between υ) and (G). Since it is possible to control the volume of the cavity to be constant, this allows molding to have a constant molding shrinkage rate from cycle to cycle.

Based on the above considerations, the present invention proposes an injection compression molding device that enables direct pressure compression, and focuses on (1) how to increase the cavity volume and how to control it; The purpose of this research is to solve the following problems: (3) how to smoothly open and close the mold to take out the product, and (3) how to obtain a compression process that allows compression to be controlled.

In the injection compression molding apparatus of the present invention, in addition to the mold clamping cylinder of a normal injection molding apparatus, there are two fixed side gou plates,
A mold plate is attached to the inner plate and the movable side plate, a short stroke hydraulic cylinder for compression is installed on the outer plate or the inner plate, and The compression operation is performed by pushing the plate with a compression hydraulic cylinder.

Figure 8 shows the FF1i (delight) between the gou plates for each process in the injection compression molding apparatus of the present invention, the mold clamping cylinder fixing plate or the tie bar support plate fixed to this during injection and low pressure (high speed) mold clamping. The present invention will be explained in detail using the relationship between the distance between the movable gou plate and the tie bar length.

Figure 8(a) shows the distance between each plate during low-pressure (high-pressure) mold clamping, the tie bar length is l, and the inner plate (2) of the fixed gouly plate and the movable gouly plate (3). The distance l' corresponds to the mold thickness.

The distance l' between the movable side gouging plate (3) and the tie bar support plate (4) can be varied by moving the cylinder drum.

FIG. 8(b) shows a high-pressure mold clamping state in which the mold clamping cylinder ram is driven forward by high-pressure oil pressure from this state.

When the molds are sufficiently connected by low-pressure mold clamping, it can be considered that l' hardly changes with high-pressure mold clamping, but the tie bar length increases by Δ, becoming (l + Δ), and the length of the extension is It corresponds to a change in distance of approximately 1', and becomes (1'+Δ).

In the injection compression molding apparatus of the present invention, the state at the time of injection is to move the mold to the parting line as shown in FIG. (P%L) or a slight gap between other templates, and the mold thickness is (/'+δ). This I
It says to compress it. Since high-pressure mold clamping is not performed, compression is performed with the tie bar length kept as I, resulting in a change in δ of l·, which becomes (1'-J).

In the compression process after injection, as shown in Figure 1(d), the inner plate of the stationary side plate moves forward, so (l'+
δ) is compressed until it becomes l', and a product with a predetermined thickness is obtained. This compression operation causes the tie bar to stretch slightly (l+Δ'), and if (1'-δ) is fixed, the outer plate (1
) and the inner plate (2) create a gap of (s+Δ').

When the injection pressure increases in the injection process, the tie bar length slightly increases (l+Δ') in a molding device where CI'-a) is fixed, so the mold thickness becomes (l'+δ+Δ
') and from that state to I', the actual amount of compression is (a+Δ').

The amount of opening of the mold before the injection process, that is, the amount of compression a
must be determined experimentally, taking into consideration the product shape, resin temperature, injection pressure, etc. For this reason, it is extremely important to have a compression margin adjustment mechanism that allows for easy readjustment of δ and that is accurate.

The present invention relates to a mechanism that can maintain CI'-δ) even when the injection pressure is high during injection filling or during compression operation. Alternatively, a hydraulic cylinder is provided on the inner plate (2), and the inner plate (2) or the outer plate (1) is pushed by the compression mechanism to perform a compression operation, and the mold is opened to take out the product. The present invention relates to an injection compression molding apparatus characterized in that the mold can be freely closed for the next cycle.

An embodiment of the present invention will be described below based on the drawings. FIG. 4 shows an apparatus that satisfies the principle and process of injection compression molding. In the upper half of Fig. 4, the insertion plate (6) is pulled out by the mold opening cylinder (5) provided on the tieper support plate (4), and the movable guide plate (3) is pulled out by the mold clamping cylinder drum (7). is receding, indicating the mold is open. Next, as shown in the lower half of Fig. 4, move the mold clamping cylinder ram (7) forward to clamp the mold once, insert the insertion plate (6) using the mold opening cylinder (5), and move the movable side gou plate (3). ) The compression margin δ is set by rotating the compression margin adjustment part (9) of the fine adjustment mechanism (8) attached to the compression margin and adjusting the dimension α corresponding to the required compression margin.

Next, as shown in the upper half of Fig. 6, when the mold clamping cylinder drum (7) is retreated, the end face of the compression allowance adjustment part (9) of the fine adjustment mechanism (8) attached to the movable side guide plate (3) will be adjusted to the insertion plate. (
6), and the compression allowance I moves to the mold mating surface. At this time, the tie bar support plate (4) and the movable gou plate (3) have a fixed dimension (J'
−δ). Therefore, even when molten resin is injected and filled into the mold cavity OQ by the injection nozzle θ and injection pressure is applied, the movable side goo plate (3) does not retreat, and the tie bar (6) extends, increasing the mold thickness. is <e' 10 δ 0 Δ
′). In the lower half of Figure 5 of the compression process after injection, the compression hydraulic cylinder (to) is buried in the outer plate (1) of the stationary die plate (the compression hydraulic cylinder 03 is buried in the inner plate (2)). The inner plate (2) of the stationary die plate is pushed forward by the
It is compressed until the mold thickness reaches l'. At this time as well, the insertion plate (6) and the fine adjustment mechanism (8) are connected to the movable side guide plate (3).
), and the space between the tie bar support plate (4) and the tie bar support plate (4) is maintained at a constant dimension (1'-δ), and the compression margin δ + Δ' of the mating surface of the mold is the outer plate (1') of the stationary die plate.
) and the inner plate (2) as a+Δ'. Therefore, the optimum compression margin setting fine adjustment mechanism of the injection compression molding apparatus of the present invention is precisely adjusted in microns so as to absorb the elongation of the tie bar length necessary to produce the compression cooling process according to the PVT curve shown in Figure 2. If it is not possible, it must be □.

Next, several examples of fine adjustment mechanisms will be explained. Figure 6 (g) is the 4th
The fine adjustment mechanism (8) in Fig. 5 is
) is shown installed. This fine adjustment mechanism (8) is applicable not only to the movable side guide plate (3) but also to the tie bar support plate (4).
However, you can make it to an appropriate size and install it anywhere using the available space.

The fine adjustment mechanism (8) is adjusted by rotating the screw of the fine adjustment mechanism (8) and the screw of the adjustment section (9). The amount of advance is determined by the pitch and diameter of the screw, but since it is set with a screw, it can be set in microns.

Also, the shape of this fine adjustment mechanism (8) and insertion plate (6) is f-f.
Cylindrical plates, elliptical plates, and rectangular cylindrical plates as shown in (a) to (a) in the arrow view.

Any shape may be used, such as a polygonal plate, and the shapes of the insertion plate (6) and the fine adjustment mechanism (8) do not necessarily have to match.

The fine adjustment mechanism (8) is installed concentrically with the tie bar (A), and the tie bar part is hollowed out so that the insertion plate (6) does not hit the tie bar (2).
The cut is an ff arrow view. 0 is the mold clamping cylinder ram (7)
This is an example when the fine adjustment mechanism (8) is installed concentrically with the mark (
- is an ff arrow view. In (B), the shape of the insertion plate @) is a flat plate, a cylindrical plate, a square cylinder plate, a polygonal cylinder plate, a combination of one circle and a corner, and other shapes as in (A) @) (C). , and one end face has a taper (6a), and this is an example in which the insertion plate (6) can be easily and easily removed by the mold opening cylinder (5).

In Figure 7, the fine adjustment mechanism itself is used as an insertion plate, and compression adjustment is performed.
This is an example of maintaining a constant dimension between the tie bar support plate (4) and the movable guide plate (3) to obtain a molded product with high precision.The compression margin δ is determined by the rotation of the adjustment part (9) of the fine adjustment mechanism (8). It is set by the pitch, diameter, and rotation speed of the screw. This molding process can be considered to be exactly the same as the method of attaching the fine adjustment mechanism to the molding machine by inserting an insertion plate.

FIG. 8 shows the shape of the mechanism for setting and adjusting the fine adjustment mechanism itself, and (a) shows that there are various shapes such as a circle, an ellipse, a square, and a combination of a polygon 9 circle and a polygon. (6) shows a structure in which one end face is tapered, and various other shapes and structures are possible.

Figure 9 shows an example of compression molding using a half nut (B) to maintain a constant dimension. , @) is an example when a fine adjustment mechanism is installed concentrically with the mold clamping cylinder drum (7) and comes into contact with it, (6)
indicates the half nut is closed, and ((b) indicates the open state.

The first @ is an example of a compression allowance setting mechanism using a rotation method, and shows a case where it is installed on a tie bar υ. When the end face of the rotary insertion plate (to) comes into contact with the end face of the rotary insertion plate (to), a compression margin is set in the mold, and the retraction limit of the movable goo plate (3) is set. At this time, the shape of the rotary insertion plate (to) is such that it holds the tie bar (b) as shown in (a) (direction) in Figure 11 (the outer shape is circular,
It can be a corner or any other shape), and the rotation method is fixed to the rotating shaft of a motor frame, etc. (6) uses a hydraulic or air cylinder with an actuating plate (to) with a wedge shape installed at the end of the cylinder to rotate the rotating insertion plate (to), which compresses and presses the retract limit. This is an example of a mechanism that can be opened and closed. (a) shows the state in which the actuating plate (to) is retreated and the rotary insertion plate (g) is in contact with the fine adjustment mechanism (8), and (q is the state in which the actuating plate (to) is advanced by the cylinder and a part of the taper The rotary insertion plate Q1 is shown pushed up and removed from the fine adjustment mechanism (8).

C) shows an example of a compression allowance adjustment and mold opening/closing mechanism in which a rotating insertion plate is not required, and the fine adjustment mechanism has an insertion hole (c) with the fine adjustment mechanism shaft α wound, and the fine adjustment mechanism retraction limiter that rotates itself has a member. In (a), after the mold clamping is completed, the fine adjustment mechanism retraction limiter rotates the part (to) to prevent the fine adjustment mechanism axis 0 from entering the insertion hole (c), and then the movable side guide plate (3) retreats. However, the fine adjustment mechanism retraction limiter shows a state in which the member and the fine adjustment mechanism shaft Q'J are in contact with each other.

(b) is the movable side guide plate (3) when opening and closing the mold.
The fine adjustment mechanism axis Q scratch is shown to be in the insertion hole (2) of the member so that the fine adjustment mechanism retraction limiter can be moved back, and the mold can be opened and closed. Further, the insertion hole may be a half-open groove (2) as shown in σ, or may be square instead of circular.

The mold can be opened and closed freely, the compression allowance can be set accurately in microns, and the movable goo plate (3)
Mechanism that allows injection compression by setting the retraction limit of the tie bar support plate (4) and always maintaining a constant distance between the tie bar support plate (4) 1) Method of combining the insertion plate and fine adjustment mechanism 2) Method of inserting and removing the fine adjustment mechanism itself 8) Method using a half nut 4) By rotating the nut, molded products with high precision and stable quality can be easily molded.

FIGS. 12 and 18 show another embodiment of the present invention, in which the fine adjustment mechanism is located between the inner plate of the fixed gouly plate and the movable gouly plate. The injection compression principle and process are as follows: When the movable goo plate (3) is advanced by rotating the compression margin adjustment part (9) of the fine adjustment mechanism (8) and setting the dimension α corresponding to the compression margin. Set the forward limit of the movable gouly plate (3) at It is then compressed and molded using the inner plate (2) of the stationary gouly plate.

The upper half of Fig. 12 shows α being set by the adjustment part (9) of the fine adjustment mechanism (8) from the mold opening state, and the mold opening cylinder (5)
The insertion plate (6) is brought into contact with the inner plate (2) of the stationary side guide plate (2), and then the movable side guide is moved forward by the mold clamping cylinder (7). Move the plate (3) forward, bring the end face of the adjustment part (9) into contact with the insertion plate (6), and at the same time regulate the advancement limit of the movable side guide plate (3), without clamping the mold to the end. The mold cavity OQ with the compression allowance I left
Inject and fill the molten resin into the injection nozzle Q]),
The tie bar (A) expands by Δ′ and the compression margin of the mold becomes +Δ′
This shows the situation. Next, in the lower half, the inner plate ( The forward limit retainer attached to 2) is pulled out from part (2), and the forward limit is held by the insertion plate (6), so that the dimension between the movable side guide plate (3) and the tie bar support plate (4) is constant. It is maintained at
This shows the state where the plate has moved between the outer plate (Q) of the fixed side plate (Q) and the inner plate (2).

FIG. 18 shows a method in which compression is performed by setting a compression allowance and a forward limit using a half nut 04, and shows that the forward limit is regulated when the half nut 04 is closed, and compression is performed when the half nut 04 is open.

In addition, it is a matter of course that the compression margin adjustment mechanism described in the previous embodiment can be used for the compression margin setting and advancement limit regulation of this embodiment.

As described above, according to the present invention, the fixed side goo plate is made into two pieces,
A mold template is attached to the inner plate of the fixed side plate and the movable side plate, and a compression hydraulic cylinder is installed on the outer or inner plate of the fixed side plate, and after injection, the inner plate or outer plate is Since the compression operation is performed by pushing with a compression hydraulic cylinder, by using a compression margin fine adjustment mechanism and a retreat limit or advance limit regulation mechanism, the volume of the cavity in the mold is increased and the compression margin is removed. It is possible to obtain a product in which the resin does not change completely during the solidification process and does not cause distortion, and has the advantage that high-speed mold clamping can be carried out without any damage.

[Brief explanation of the drawing]

Figure 1 is a PVT curve diagram showing the relationship between "pressure applied to the resin - specific volume of the resin - temperature of the resin" in the toggle compression method. , (C
) is the compression start point, [F]) ([)') is the compression completion point,
(G)) (E') is the point just before the mold opens, 10) is the mold opening point, S) is the room temperature point, Figure 2 is a PVT curve diagram using the direct pressure method of the present invention, Figure 8 is the basics of the present invention The conceptual diagram and FIGS. 4 to 11 are detailed explanatory diagrams showing one embodiment of the present invention. The upper half of FIG. 4 is a diagram of the mold opening state, the lower half is a diagram of the mold closing state, and FIG. 5 is the upper half. Figure 6 is a state diagram of the mold opening, forming a compression margin on the mold mating surface, and injection filling of resin, the lower half is a diagram of the state when compression is performed, and Figure 6 is the compression margin setting fine adjustment mechanism and the shape of the insertion plate. and the mounting positions, (4) is the type in which the fine adjustment mechanism is attached to the movable gou plate, [F]) is the type in which it is attached concentrically to the tie bar, and (C) is the type in which the fine adjustment mechanism is attached to the mold clamping cylinder ram. Fig. 7 shows an example of a tapered insertion plate, and Fig. 7 shows a method in which the fine adjustment mechanism itself is inserted and removed, and the upper half shows a state in which the compression allowance is set in the mold. , the lower half is a diagram showing the compressed state, and Figure 8 is a diagram showing the shape of the fine adjustment mechanism in Figure 7, (G) is a cylinder, square cylinder, or other shape, (2) is a tapered one. Fig. 9 is a diagram when using a half nut, (A) is a diagram of the state in which it is installed at an arbitrary position between the tie bar support plate and the movable side gouging plate, and 0) is a diagram when the mold is clamped. Figure 10 is a detailed illustration of the state in which the fine adjustment mechanism is installed on the cylinder ram and is slidable on the tie bar and is installed on the movable goo plate, and the insertion plate is rotated. Figure 11 is a detailed illustration of the rotation type compression. This is a diagram showing each method of the margin adjustment mechanism and its shape.
Figure 10 shows the rotation method using a motor and the shape of the rotating insertion plate, @) shows the rotation method using a mechanical mechanism and the shape of the rotation insertion plate and its operating plate, and (C) shows the mold clamping cylinder ram. The concentric fine-adjustment mechanism retraction stopper is a type in which the part rotates to open and close the mold, and the rotary fine-adjustment mechanism retraction stopper shows the shape of the part. Figures 12 and 13 are detailed explanatory views showing other embodiments of the present invention, in which Figure 12 is a type in which the forward limit is restricted by an insertion plate, and Figure 18 is a type in which the forward limit is restricted by a Harznaft. This shows the method to do this. (1)... Outer plate of the fixed side Gui plate, (2
)...Inner plate of the fixed side Gui plate, (3).
・・Movable side gou plate, (4) ・・Tie bar support plate, (5) ・・Mold opening cylinder, (6) ・・Insertion plate, (7) ・・・Mold clamping cylinder ram, (8 )...Fine adjustment mechanism, (9)...Compression allowance adjustment unit, OQ...mold cavity, (2)...tie bar, (to)...hydraulic cylinder for compression, o4...half nut, (g)...Rotating insertion plate, a→...motor, (to)...operating plate, wire
...Fine adjustment mechanism reverse limit receiver is the department, (foundation)...forward limit receiver is the department agent Yoshihiro Morimoto - □Station ≠ Figure 3 to Figure 4

Claims (1)

[Claims] 1. The fixed side die plate is composed of two plates, a compression hydraulic cylinder is provided on the outer plate or the inner plate of the fixed side die plate, and the compression hydraulic cylinder is used to control the inner side of the fixed side die plate. The compression operation is performed by pushing the plate or outer plate, and there is also a compression margin fine adjustment mechanism between the tie bar support plate and the movable die plate that can adjust the compression margin required for the mold, and a compression margin adjustment mechanism that can adjust the compression margin required for the mold. A retraction limit mechanism is provided to restrict the retraction limit of the movable die plate during resin injection and filling or compression operations, and to maintain the dimensions of the tie bar support plate and the movable die plate constant without change, and this retraction limit restriction mechanism is released. An injection compression molding device characterized in that the mold is opened by the following steps. 2. The compression margin fine adjustment mechanism is inserted and removed between the tie bar support plate and the movable die plate so that the compression margin adjustment mechanism itself adjusts the compression margin and regulates the retraction limit. injection compression molding equipment. 8. The compression clearance fine adjustment mechanism is attached to the tie bar support plate or the movable die plate, and the retraction limit regulating mechanism is inserted and removed between the compression clearance fine adjustment mechanism and the movable die plate or the tie bar support plate. The injection compression molding apparatus according to scope 1. 4. The compression margin fine adjustment mechanism is attached to the tie bar support plate or the movable die plate, and the retraction limit regulation mechanism is located between the compression margin fine adjustment mechanism and the movable die plate or tie bar support plate, and the compression margin fine adjustment mechanism and the retraction limit regulation mechanism are The injection compression molding apparatus according to claim 1, wherein the backward limit is regulated and released by relative rotation. 5. The compression clearance fine adjustment mechanism is attached to the tie bar support plate or the movable die plate, and when the half nut provided between the tie bar support plate and the movable die plate is closed, the compression clearance fine adjustment mechanism is sandwiched or comes into contact with the end face. An injection compression molding apparatus according to claim 1, characterized in that: 6. The fixed side gouging plate is composed of two pieces, a compression hydraulic cylinder is provided on the outer plate or the inner plate of the fixed side gouing plate, and the compression hydraulic cylinder pushes the inner plate or outer plate of the fixed side gouing plate. In addition, there is a compression margin fine adjustment mechanism between the inner plate of the movable gouly plate and the fixed goui plate that can adjust the compression margin required for the mold, and a compression margin adjustment mechanism that allows the compression margin to be adjusted as required for the mold. A forward limit regulating mechanism is provided that regulates the forward limit of the movable gouy plate during injection filling and compression operations, and maintains the dimension between the movable gouy plate and the inner plate of the fixed gouy plate constant without change. An injection compression molding apparatus characterized in that a compression operation is performed by the compression hydraulic cylinder by releasing the advancement limit regulating mechanism of the mold, and the mold is opened by retracting the movable die plate. 7. The scope of claims characterized in that the compression clearance fine adjustment mechanism is inserted and removed between the inner plates of the movable side gouging plate and the fixed side gouing plate, so that the compression allowance adjustment mechanism itself adjusts the compression clearance and regulates the retraction limit. The injection compression molding apparatus according to item 6. 8. The compression clearance fine adjustment mechanism is attached to the inner plate of the movable die plate or the fixed gouging plate, and the forward limit regulating mechanism is inserted and removed between the compression clearance fine adjustment mechanism and the inner plate of the movable gouing plate or the fixed gouing plate. An injection compression molding apparatus according to claim 6, characterized in that: 9. The compression margin fine adjustment mechanism is attached to the inner plate of the stationary die plate or the movable die plate, and the advance limit regulating mechanism is located between the compression fine adjustment mechanism and the movable die plate or the inner plate of the fixed die plate, and 7. The injection compression molding apparatus according to claim 6, wherein the forward limit is restricted and released by relative rotation of the fine adjustment mechanism and the forward limit restricting mechanism. 10 The compression clearance fine adjustment mechanism is attached to the inner plate of the movable side die plate or the fixed side die plate, and when the half nut provided between the movable side die plate and the fixed side die plate is closed, the compression clearance fine adjustment mechanism is sandwiched. 7. The injection compression molding device according to claim 6, wherein the injection compression molding device is configured such that the molding member is inserted into the molded body or comes into contact with the end face.