CN115648704B - Sound insulation board compression molding equipment - Google Patents

Abstract

The invention relates to the technical field of compression molding, in particular to compression molding equipment for a sound insulation board. The invention provides a compression molding device for a sound insulation board with an adjustable bottom die height. The utility model provides a septum compression molding equipment, is equipped with the bottom plate including base, bottom plate and die holder etc. on the base, installs frame and die holder on the bottom plate, is equipped with the die block in the die holder, and the frame top is equipped with first cylinder, and movable mould and first cylinder fixed connection, the movable mould is relative with the die block, and it has the exhaust hole to open on the movable mould, still including electromagnetic shaker and adjusting bolt, is equipped with the electromagnetic shaker on the movable mould, the electromagnetic shaker can make the movable mould vibrations, and the die block bottom is equipped with the adjusting bolt who passes die holder and bottom plate. According to the invention, through the matching of the adjusting bolt, the bottom die and other parts, the flexible adjustment of the height of the bottom die is realized, the compression molding processing of products with different thicknesses can be realized under the condition of not replacing a die, the design and manufacturing cost is effectively reduced, and the production processing efficiency in mass production is improved.

Description

Sound insulation board compression molding equipment

Technical Field

The invention relates to the technical field of compression molding, in particular to compression molding equipment for a sound insulation board.

Background

Currently, noise has become a major environmental pollution, and the acoustic environmental problem of buildings is receiving more and more attention and attention. The selection of proper materials for sound absorption, sound insulation and shock absorption treatment of buildings is one of the most common and basic technical measures in the building noise control project.

Sound is a wave-like energy that requires a medium to propagate. When sound passes through a critical contact surface of two media from one medium to the other medium, the transmission of sound energy is essentially the transmission of vibration amplitude, and when the sound propagates across the medium, the larger the difference between the densities of the two media is, the larger the loss of the sound energy is. In practical application, air is a space which is moved by human beings in a normal state, and therefore, a material which has a larger density difference with the air is generally a material with a high density, namely the material can be regarded as a sound insulation material. The higher the density, the better the sound insulation effect. Panels made of such materials are called acoustical panels.

However, sound of all frequencies is not blocked by the baffle plate, the object has a natural resonant frequency, and the sound insulation effect of the baffle plate is remarkably reduced when the sound is close to the resonant frequency of the object. Therefore, in the preparation of the sound insulation board, sound insulation materials with different properties are generally adopted, and the sound insulation materials are compounded in the sound insulation board by utilizing the characteristics of the sound insulation materials, so that the sound insulation board can change the sound frequency vibration of raw materials while exerting the advantages of the sound insulation materials so as to improve the overall performance of sound insulation.

The mode that prior art adopted compression molding usually is with combined material mixture shaping solidification, and the acoustic celotex board is in the quantization production stage, need make the acoustic celotex board of different thickness according to the specification difference, conventional compression molding equipment has to change the mould and is applicable to the production of different thickness panels, design and manufacturing cost are higher, just hardly do the modification once stereotype, the flexibility is relatively poor, when carrying out production processing to the product of different thickness, need to change the mould, complex operation, therefore, it is necessary to design a die block height-adjustable's acoustic celotex board compression molding equipment in order to solve above-mentioned problem.

Disclosure of Invention

The invention provides a compression molding device for a sound insulation board with an adjustable bottom die height, aiming at overcoming the defects that the design and manufacturing cost is higher, the modification is difficult once the sound insulation board is shaped, and the flexibility is poorer when the existing compression molding device is used for processing the sound insulation board.

The utility model provides a septum compression molding equipment, is equipped with the bottom plate including base, bottom plate, frame, die holder, die block, first cylinder and movable mould on the base, installs frame and die holder on the bottom plate, is equipped with the die block in the die holder, and the frame top is equipped with first cylinder, movable mould and first cylinder fixed connection, the movable mould is relative with the die block, and it has the exhaust hole to open on the movable mould, still including electromagnetic shaker and adjusting bolt, is equipped with the electromagnetic shaker on the movable mould, the electromagnetic shaker can make the movable mould shake, and the die block bottom is equipped with the adjusting bolt who passes die holder and bottom plate, adjusting bolt can highly adjust the die block.

Further, still including shedder, shedder is equipped with the leading truck including leading truck, threaded rod, lifter plate, pivot, bevel gear and drive mechanism including the symmetry on the bottom plate, the leading truck is two at least, and the threaded rod passes in the bottom plate stretches into the leading truck, but threaded rod relative leading truck and bottom plate rotate, and the lifter plate is installed in the threaded rod bottom, and adjusting bolt and lifter plate fixed connection just remove along with the lifter plate jointly, and the pivot is rotated and is installed on both sides leading truck top, is equipped with between pivot and the threaded rod to be used for driven bevel gear, is connected with drive mechanism between movable mould and the pivot, drive mechanism can drive the pivot rotation when moving to a take the altitude on the movable mould, makes the rotatory lifter plate that drives of threaded rod jack-up the die block.

Furthermore, the demoulding device further comprises a second cylinder and a push rod, the second cylinder is fixedly installed on the bottom plate, the push rod is fixedly connected with the second cylinder, and the push rod is used for pushing the formed plate.

Furthermore, the die holder further comprises a cooling device, wherein the cooling device comprises a cooling pipe and a liquid storage tank, the cooling pipe is arranged in the die holder, and the liquid storage tank is connected to two ends of the cooling pipe.

Further, still including being used for the reinforced feed arrangement in the mould, feed arrangement installs the support including support, motor, pipeline, feeder hopper, stirring frame, electrothermal tube and solenoid valve on the bottom plate, and motor fixed mounting is equipped with the pipeline on the support, and pipeline top intercommunication has the feeder hopper, is equipped with helical structure's stirring frame in the pipeline, is equipped with the electrothermal tube in the pipeline, installs the solenoid valve between pipeline and the die holder.

Further, still including first grinding device, first grinding device is equipped with first box including first box, pinch roller, first elastic component, swash plate and the area of polishing on the base, first box is installed in the die holder side, is equipped with the pinch roller in the first box, is connected with first elastic component between pinch roller and the first box top surface, is equipped with the swash plate in the first box, swash plate bilateral symmetry is equipped with the area of polishing.

Further, the primary grinding device further comprises a roller and a first collecting frame, the roller is arranged in the first box body, and the first collecting frame is arranged at the bottom of the inclined plate and the bottom of the roller.

Further, still including secondary grinding device, secondary grinding device is equipped with the second box including second box, electronic gyro wheel, second elastic component and a section of thick bamboo of polishing on the base, second box and first box intercommunication are equipped with electronic gyro wheel in the second box, are connected with the second elastic component between electronic gyro wheel and the second box top surface, and second box bilateral symmetry is equipped with a section of thick bamboo of polishing.

Further, the secondary grinding device further comprises a separation curtain and a second collecting frame, an opening used for sliding the plates out is formed in the side face of the second box body, the separation curtain is installed at the opening, and the second collecting frame is arranged at the bottom of the second box body.

The invention has the following advantages: 1. according to the invention, through the matching of the adjusting bolt, the bottom die and other parts, the flexible adjustment of the height of the bottom die is realized, the compression molding processing of products with different thicknesses can be realized under the condition of not replacing a die, the design and manufacturing cost is effectively reduced, and the production processing efficiency in mass production is improved;

2. according to the invention, through the matching of the bevel gear, the transmission mechanism, the lifting plate and other components, the effects that the formed plate is ejected out and demolded synchronously when the servo die moves upwards and is automatically reset when the movable die moves downwards without influencing compression molding processing are achieved, and the convenience of compression molding processing is greatly improved;

3. the cooling device and the feeding device are arranged, so that the forming die can be cooled in an accelerated manner, the composite material can be fully stirred, and the production efficiency is effectively improved;

4. according to the invention, by arranging the primary polishing device and the secondary polishing device, four sides of the formed plate can be sufficiently polished after the formed plate is demoulded and taken out, so that the purpose of removing burrs and stains on the surface of the plate is realized, in addition, the design of the collecting frame can recycle and treat waste materials, and the material utilization rate is improved.

Drawings

Fig. 1 is a schematic perspective view of the present invention.

Fig. 2 is a partially enlarged view of the present invention.

FIG. 3 is a schematic perspective view of the die holder, the bottom die, the movable die and the adjusting bolt of the present invention.

FIG. 4 is a perspective view of the demolding device of the present invention.

Fig. 5 is a perspective view of the cooling device of the present invention.

Fig. 6 is a schematic perspective view of the feeding device of the present invention.

Fig. 7 is a schematic perspective view of the primary polishing apparatus according to the present invention.

Fig. 8 is a schematic perspective view of the secondary polishing apparatus according to the present invention.

The meaning of the reference symbols in the figures: 1: base, 2: bottom plate, 3: frame, 4: die holder, 5: bottom die, 6: first cylinder, 7: moving die, 8: exhaust port, 9: vibrator, 10: adjusting bolt, 11: demolding device, 111: guide frame, 112: threaded rod, 113: lifter plate, 114: rotating shaft, 115: bevel gear, 116: transmission mechanism, 117: second cylinder, 118: push rod, 12: cooling device, 121: cooling pipe, 122: liquid reserve tank, 13: feed arrangement, 131: bracket, 132: motor, 133: pipe, 134: feed hopper, 135: stirring frame, 136: electric heating tube, 137: electromagnetic valve, 14: primary polishing device, 141: first casing, 142: pressure roller, 143: first elastic member, 144: swash plate, 145: sanding belt, 146: drum, 147: first collection frame, 15: secondary grinding device, 151: second case, 152: electric roller, 153: second elastic member, 154: barrel polishing, 155: curtain, 156: and a second collection frame.

Detailed Description

Reference herein to an embodiment means that a particular feature, structure, or characteristic described in connection with the embodiment can be included in at least one embodiment of the invention. The appearances of the phrase in various places in the specification are not necessarily all referring to the same embodiment, nor are separate or alternative embodiments mutually exclusive of other embodiments. It is explicitly and implicitly understood by one skilled in the art that the embodiments described herein can be combined with other embodiments.

Examples

The utility model provides a septum compression molding equipment, as shown in fig. 1-3, including base 1, bottom plate 2, frame 3, die holder 4, die block 5, first cylinder 6 and movable mould 7, base 1 installs at the top through the bolt bottom plate 2, and frame 3 and die holder 4 are installed through the bolt in 2 tops of bottom plate, are equipped with die block 5 in the die holder 4, through sealing washer sealing connection between die block 5 and the die holder 4, die block 5 can reciprocate relative die holder 4, and first cylinder 6 is installed through the bolt to 3 top undersides of frame, and movable mould 7 and first cylinder 6 pass through keysets fixed connection, and movable mould 7 reciprocates along with first cylinder 6, movable mould 7 is relative with die block 5, and it has four exhaust holes 8 to open on the movable mould 7, still including electromagnetic shaker 9 and adjusting bolt 10, has electromagnetic shaker 9 through bolted connection on the movable mould 7, electromagnetic shaker 9 can make movable mould 7 shake, and die holder 5 bottoms are equipped with the adjusting bolt 10 that passes die holder 4 and bottom plate 2, and adjusting bolt 10 can rotate and reciprocate relative die holder 4 and bottom plate 2, adjusting bolt 10 can adjust die block 5 height.

When the sound insulation boards with different thicknesses are required to be produced, the adjusting bolt 10 is rotated to jack up or put down the bottom die 5, so that the height difference between the top end of the die holder 4 and the bottom die 5 is consistent with the required thickness for production, at the moment, the bottom die 5 and the die holder 4 are connected in a sealing mode through a sealing ring, a specified amount of materials are added into the die as required, the first air cylinder 6 is controlled to be pressed down at first and then at second, the raw materials in a die groove are prevented from being brought out by air, the movable die 7 is pressed down to be in contact with the inner wall of the die holder 4, the movable die 7, the bottom die 5 and the die holder 4 enclose a closed cavity, the pressure is increased after the closed state to heat and pressurize the raw materials, the vibrator 9 drives the movable die 7 to vibrate together, so that the materials are smoother, after the reaction is carried out for a proper time, the pressure is released through the vent holes 8 to release the die for a short time, moisture and low molecular substances are released, then the die pressing temperature is kept for a period of time, so that the products are solidified and formed, and then the products are demoulded and taken out.

Examples

On the basis of the embodiment 1, as shown in fig. 4, the demolding device 11 is further included, the demolding device 11 includes guide frames 111, threaded rods 112, lifting plates 113, rotating shafts 114, bevel gears 115, and transmission mechanisms 116, the guide frames 111 are symmetrically welded on the bottom plate 2, the guide frames 111 are vertically installed on two sides of the mold base 4, the threaded rods 112 penetrate through the bottom plate 2 and extend into the guide frames 111, the threaded rods 112 can rotate relative to the guide frames 111 and the bottom plate 2, the lifting plates 113 are installed at the bottoms of the threaded rods 112 in a threaded connection manner, the threaded rods 112 can drive the lifting plates 113 to slide up and down in a rotating manner, the adjusting bolts 10 are fixedly connected with the lifting plates 113 and move together with the lifting plates 113, the rotating shafts 114 are rotatably installed at the tops of the guide frames 111 on two sides, the bevel gears 115 for transmission are installed between the rotating shafts 114 and the threaded rods 112 in a threaded fit manner, bevel gear 115 symmetry respectively locates the terminal and threaded rod 112 top of pivot 114, is connected with drive mechanism 116 between movable mould 7 and the pivot 114, drive mechanism 116 can move the pivot 114 when moving to a take the altitude on movable mould 7 and rotate, makes the rotatory lifter plate 113 of drive of threaded rod 112 with die block 5 jack-up, drive mechanism 116 includes rack and gear, and the rack welding is at movable mould 7 top, and the gear cup joints on pivot 114, rack and gear engagement, and the gear only moves on movable mould 7 when taking the altitude with the rack contact, shedder 11 is still including second cylinder 117 and push rod 118, and second cylinder 117 passes through bolt fixed mounting on bottom plate 2, and push rod 118 and second cylinder 117 splice, and push rod 118 is U type and bottom surface and die holder 4 top surface and is in the coplanar, push rod 118 is used for promoting the shaping panel.

After the compression molding process of the sound insulation board is completed, the molded board needs to be taken out, the first air cylinder 6 is controlled to drive the movable mold 7 to move upwards to be separated from the mold base 4, after the movable mold 7 moves upwards to a certain height, a rack in a transmission mechanism 116 fixedly connected to the movable mold 7 is meshed with a gear, the movable mold 7 continues to move upwards to enable the rack to move upwards to drive the gear to rotate, a gear in the transmission mechanism 116 is sleeved on a rotating shaft 114 to drive the rotating shaft 114 to rotate, a threaded rod 112 rotates under the transmission action of a bevel gear 115, the lifting plate 113 moves upwards to drive the adjusting bolt 10 to jack the bottom mold 5, the molded board drives a second air cylinder 117 to drive a push rod 118 to push the push rod out after being ejected, the movable mold 7 moves downwards for a certain distance to enable the lifting plate 113 to reset, the rack in the transmission mechanism 116 is separated from contact with the gear, and then the height of the bottom mold 5 can be adjusted through the adjusting bolt 10 according to the production needs.

Examples

On the basis of the embodiment 2, as shown in fig. 5, the cooling device 12 is further included, the cooling device 12 includes a cooling pipe 121 and a liquid storage tank 122, the cooling pipe 121 is disposed in the die holder 4, the cooling pipe 121 is arranged in a serpentine shape, two ends of the cooling pipe 121 are connected with the liquid storage tank 122 through a joint and a screw thread in a matching manner, the liquid storage tank 122 is used for storing cooling liquid, and the cooling liquid circulates in the cooling pipe 121.

After panel mould pressing solidification accomplishes gives sound insulation, because just temperature is higher for previous heating pressure plate, just can conveniently take out after needing a period of time to cool off, steerable liquid reserve tank 122 leads to the coolant liquid in to cooling tube 121 this moment, and the coolant liquid flows along serpentine distribution's cooling tube 121 circulation, and the heat that constantly gives off the mould absorbs and takes away for cooling efficiency.

As shown in fig. 6, the die further includes a feeding device 13 for feeding materials into the die, the feeding device 13 includes a support 131, a motor 132, a pipeline 133, a feeding hopper 134, a stirring frame 135, an electrical heating tube 136 and an electromagnetic valve 137, the support 131 is welded on the bottom plate 2, the motor 132 is fixedly mounted on the support 131 through bolts, the pipeline 133 for conveying materials is disposed on the support 131, the pipeline 133 is divided into two sections, the top of the pipeline 133, which is close to the motor 132 section, is communicated with the feeding hopper 134, the feeding hopper 134 is vertically mounted in a cylindrical shape and is three in total, the stirring frame 135 with a spiral structure is disposed in the pipeline 133, the stirring frame 135 is composed of a rod portion and a spiral blade portion, the stirring frame 135 is connected with an output shaft of the motor 132, the motor 132 can drive the stirring frame 135 to rotate to stir, the pipeline 136 is disposed in the side of the die holder 4, the electrical heating tube 136 is annularly wound on the inner wall of the pipeline 133, the electrical heating tube 136 can uniformly heat the material in the pipeline 133, the electromagnetic valve 133 is disposed between the pipeline 133 and the die holder 4 through bolts, and the electromagnetic valve 137 can control the electromagnetic valve 137 to control the material in the pipeline 133 to flow into the die.

Before compression molding, the composite materials to be used are put into the corresponding feed hoppers 134 in proportion, the materials fall into the pipeline 133 under the action of self gravity, the motor 132 is controlled to drive the stirring frame 135 and the electric heating tubes 136 to work, the stirring frame 135 with the spiral structure pushes the materials to the side of the die holder 4 while rotating and stirring, the electric heating tubes 136 heat the materials in the pipeline 133 to raise the temperature, the composite materials are fully mixed together in the stirring and heating processes, and then the electromagnetic valve 137 is controlled to add the specified amount of the materials into the die.

Examples

On the basis of embodiment 3, as shown in fig. 7, the polishing device 14 further comprises a first polishing device 14, the first polishing device 14 comprises a first box 141, a pressing wheel 142, a first elastic part 143, an inclined plate 144 and a polishing belt 145, the first box 141 is mounted on the base 1 through bolts, the first box 141 is mounted on the side of the die holder 4 and is opposite to the push rod 118, the pressing wheel 142 is arranged in the first box 141 through thread fit, the first elastic part 143 is connected between the pressing wheel 142 and the top surface of the first box 141, the first elastic part 143 is a stainless steel compression spring, the pressing wheel 142 and the first elastic part 143 are matched to press plates with different thicknesses, the inclined plate 144 is welded in the first box 141, the inclined plate 144 is a punching plate and a through hole is a circular hole, the top end of the inclined plate 144 is flush with the top surface of the die holder 4, the two sides of the inclined plate 144 are symmetrically provided with the friction rolling inclined plate 145 through guide columns, when a formed plate slides down along the inclined plate 144, the polishing belt 145 polishes the two sides of the formed plate, the polishing device 14 further comprises a first inclined plate 146 and a first collecting roller 147, the first collecting frame 146 is provided with a sliding roller 147, the sliding plate 146, and a sliding gap exists between the first collecting roller 146 and the sliding roller 147, and the sliding roller 147 is provided with a sliding plate 146, and a sliding gap exists between the first collecting roller 146 and a sliding roller 147, the sliding roller 147, and a sliding roller 2 sliding roller 146.

As shown in fig. 8, the secondary polishing device 15 further includes a secondary polishing device 15, the secondary polishing device 15 includes a second box 151, an electric roller 152, a second elastic member 153 and a polishing barrel 154, the second box 151 is installed on the base 1 through a bolt, the second box 151 is communicated with the first box 141, a plate slides into the second box 151 through a roller 146, the electric roller 152 is installed in the second box 151 through a screw-thread fit, the second elastic member 153 is connected between the electric roller 152 and the top surface of the second box 151, the second elastic member 153 is a stainless steel compression spring, the polishing barrel 154 with a rough surface is symmetrically arranged on two sides of the second box 151, the electric roller 152 can drive a formed plate to move, the two sides of the plate which is not polished are rubbed with the polishing barrel 154 for polishing, the secondary polishing device 15 further includes a partition curtain 155 and a second collecting frame 156, an opening for sliding the plate to slide out is arranged on the side surface of the second box 151, the partition curtain 155 is glued to the opening, the partition curtain 155 is used for cleaning the dirty bottom surface of the plate, a bar-shaped through hole is arranged on the second box 151, and the bottom plate can slide relative to the collecting frame 156.

After the molding of the sound insulation board is pushed out by the push rod 118, the molded board is pushed into the first box 141, the press wheel 142 connected with the first elastic part 143 presses the board with different thickness to slide down along the inclined plate 144, two side surfaces of the board fully rub with the polishing belt 145 in the sliding process, burrs on the surface of the board are clear and then fall onto the roller 146, waste materials generated in the polishing process fall into the lower collecting tank along the gap between the through hole on the inclined plate 144 and the roller 146, so that subsequent recovery processing is facilitated, the board slides into the second box 151 along with the rotation of the roller 146, the electric roller 152 drives the board to move towards the partition curtain 155 side, the electric roller 152 presses the board with different thickness under the action of the second elastic part 153, the two side surfaces of the board do not reach the full friction with the polishing barrel 154, the burrs and the like are removed, then the dirt on the surface is erased through the partition curtain 155, the waste materials and the impurities fall into the second collecting frame 156 to be recovered and processed, and the processing of the sound insulation board is completed.

The above examples are merely representative of preferred embodiments of the present invention, and the description thereof is more specific and detailed, but not to be construed as limiting the scope of the present invention. It should be noted that, for those skilled in the art, various changes, modifications and substitutions can be made without departing from the spirit of the present invention, and these are all within the scope of the present invention. Therefore, the protection scope of the present patent shall be subject to the appended claims.

Claims (8)

1. The utility model provides a septum compression molding equipment, including base (1), bottom plate (2), frame (3), die holder (4), die block (5), first cylinder (6) and movable mould (7), be equipped with bottom plate (2) on base (1), install frame (3) and die holder (4) on bottom plate (2), be equipped with die block (5) in die holder (4), frame (3) top is equipped with first cylinder (6), movable mould (7) and first cylinder (6) fixed connection, movable mould (7) are relative with die block (5), and it has exhaust hole (8), characterized by to open on movable mould (7): the die comprises a die holder (4), a moving die (7) and a bottom die (5), and is characterized by further comprising a vibrator (9) and an adjusting bolt (10), wherein the vibrator (9) is arranged on the moving die (7), the moving die (7) can vibrate by the vibrator (9), the adjusting bolt (10) penetrating through the die holder (4) and the bottom plate (2) is arranged at the bottom of the bottom die (5), and the adjusting bolt (10) can adjust the height of the bottom die (5); still including shedder (11), shedder (11) are equipped with leading truck (111) including leading truck (111), threaded rod (112), lifter plate (113), pivot (114), bevel gear (115) and drive mechanism (116) on bottom plate (2) the symmetry, leading truck (111) are two at least, and threaded rod (112) pass bottom plate (2) and stretch into leading truck (111) in, threaded rod (112) can rotate with bottom plate (2) relative leading truck (111), lifter plate (113) are installed in threaded rod (112) bottom, adjusting bolt (10) and lifter plate (113) fixed connection and along with lifter plate (113) remove jointly, pivot (114) rotate and install on both sides leading truck (111) top, are equipped with between pivot (114) and the threaded rod (112) and are used for driven bevel gear (115), are connected with drive mechanism (116) between movable mould (7) and pivot (114), drive mechanism (116) can drive pivot (114) and rotate when movable mould (7) move up to a take shape and move up a height, make threaded rod (112) rotatory drive die block (113) lift 5).

2. A compression molding apparatus for acoustical panels as claimed in claim 1, wherein: the demolding device (11) further comprises a second air cylinder (117) and a push rod (118), the second air cylinder (117) is fixedly installed on the bottom plate (2), the push rod (118) is fixedly connected with the second air cylinder (117), and the push rod (118) is used for pushing the formed plate.

3. A soundproofing board press molding apparatus according to claim 1, wherein: the die holder is characterized by further comprising a cooling device (12), wherein the cooling device (12) comprises a cooling pipe (121) and a liquid storage box (122), the cooling pipe (121) is arranged in the die holder (4), and the liquid storage box (122) is connected to two ends of the cooling pipe (121).

4. A compression molding apparatus for acoustical panels as claimed in claim 1, wherein: still including being used for feeding in the mould feed arrangement (13), feed arrangement (13) are including support (131), motor (132), pipeline (133), feeder hopper (134), stirring frame (135), electrothermal tube (136) and solenoid valve (137), install support (131) on bottom plate (2), motor (132) fixed mounting is on support (131), be equipped with pipeline (133) on support (131), pipeline (133) top intercommunication has feeder hopper (134), be equipped with helical structure's stirring frame (135) in pipeline (133), be equipped with electrothermal tube (136) in pipeline (133), install solenoid valve (137) between pipeline (133) and die holder (4).

5. A compression molding apparatus for acoustical panels as claimed in claim 1, wherein: still including first grinding device (14), first grinding device (14) is equipped with first box (141) including first box (141), pinch roller (142), first elastic component (143), swash plate (144) and area (145) of polishing on base (1), first box (141) are installed in die holder (4) side, are equipped with pinch roller (142) in first box (141), are connected with first elastic component (143) between pinch roller (142) and first box (141) top surface, are equipped with swash plate (144) in first box (141), swash plate (144) bilateral symmetry is equipped with area (145) of polishing.

6. A soundproofing board press molding apparatus according to claim 5, wherein: the primary grinding device (14) further comprises a roller (146) and a first collecting frame (147), the roller (146) is arranged in the first box body (141), and the first collecting frame (147) is arranged at the bottoms of the inclined plate (144) and the roller (146).

7. A soundproofing board press molding apparatus according to claim 6, wherein: still including secondary grinding device (15), secondary grinding device (15) are equipped with second box (151) including second box (151), electronic gyro wheel (152), second elastic component (153) and a section of thick bamboo (154) of polishing on base (1), second box (151) and first box (141) intercommunication are equipped with electronic gyro wheel (152) in second box (151), are connected with second elastic component (153) between electronic gyro wheel (152) and second box (151) top surface, and second box (151) bilateral symmetry is equipped with a section of thick bamboo (154) of polishing.

8. A soundproofing board press molding apparatus according to claim 7, wherein: the secondary grinding device (15) further comprises a separation curtain (155) and a second collecting frame (156), an opening used for sliding out the plates is formed in the side face of the second box body (151), the separation curtain (155) is installed at the opening, and the second collecting frame (156) is arranged at the bottom of the second box body (151).

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