A pressing molding machine

Abstract

The present invention discloses a press molding machine, which belongs to the technical field of press machines, and includes a bracket, an extrusion die and a pressure-bearing die are arranged on the bracket, a pusher is arranged on the bracket, a shell is placed on the bracket, the pressure-bearing die is provided with deformation grooves distributed around the lower containing groove, a plurality of balls are movably arranged in the deformation grooves, and a blowing assembly for continuously blowing gas into the deformation grooves is arranged on the bracket. A press molding machine of the present invention is provided with a plurality of balls that can reciprocate along the deformation grooves, and the blowing assembly continuously blows air into the deformation grooves when the product is pressed and molded, so that the material can be cooled more in the upper cover groove, effectively reducing the degree of distortion of the product during cooling and molding, so that the overall structure of the cooled product and the surface shape of the two ends of the product can be closer to the shape of the cavity formed by the preset two soft molds.

Description

Technical Field

[0001] The invention relates to the technical field of presses, in particular to a pressing molding machine. Background Art

[0002] A press is a device that uses air pressure or oil pressure to guide two separated molds to be spliced ​​together, so that the material in the mold can be molded into the corresponding cavity space shape through cooling by the mold cavity formed by the two molds. The material usually molded by this type of equipment is in a rheological state before molding and gradually cools in the mold cavity.

[0003] When forming fragile products with complex surface textures, molds made of soft materials are usually used to reduce the risk of breakage due to collision between the product and the mold cavity surface during demolding. In addition, since soft molds can undergo elastic deformation during extrusion, materials in a rheological state in the mold cavity can more easily fill and fit the space of the mold cavity.

[0004] In actual production, it is found that since a soft mold is usually manipulated to press another soft mold placed on a work surface, when the material with a higher temperature is cooled in the lower mold due to gravity during rheology, the soft mold will also cool down from the higher temperature due to heat transfer and shrink, resulting in the rebound force applied by the lower mold on the material surface being insufficient to allow the material to remain in contact with the inner wall of the mold cavity in the upper mold. The overall shape of the material is distorted toward one side of the lower mold. The final product is relatively flat compared to the designed mold cavity shape, and the texture on one side of the product is not clear enough.

[0005] In view of the above problems, a pressing molding machine is proposed to solve the above problems. Summary of the invention

[0006] The purpose of the present invention is to solve the problems in the prior art and to propose a pressing molding machine.

[0007] In order to achieve the above-mentioned purpose, the present invention adopts the following technical scheme: a pressing molding machine, comprising a bracket, an extrusion die with an upper cover groove and a pressure-bearing die with a lower receiving groove are arranged on the bracket, a pushing member for pushing the extrusion die to elastically extrude the pressure-bearing die is arranged on the bracket, a shell distributed around the pressure-bearing die is placed on the bracket, the pressure-bearing die is provided with deformation grooves distributed around the lower receiving groove, a plurality of balls are movably arranged in the deformation groove, the ball center position of the ball is lower than the groove bottom edge of the lower receiving groove, and a blowing component for continuously blowing gas into the deformation groove is arranged on the bracket, When the inner wall of the deformation groove is elastically squeezed to make a plurality of balls close to the pressure-bearing die, the blowing assembly blows the plurality of balls to roll along the deformation groove for a plurality of circles. The deformation groove comprises a raceway for accommodating the balls and a fitting opening for connecting the raceway with the outside of the pressure-bearing die. The cross-section of the raceway is an oblong structure. When the extrusion die extrude the pressure-bearing die, the balls are squeezed by the inner wall of the raceway to move to a side close to the lower containing groove until the balls abut against the inner wall of the raceway. The fitting opening is spaced apart from the inner wall of the lower containing groove and the fitting opening is away from the inner wall of the lower containing groove. As the extrusion die squeezes the pressure-bearing die, the two inner walls of the fitting opening gradually approach each other.

[0008] The present invention is further configured as follows: the fitting opening is gradually formed from a position away from the lower receiving groove toward the lower receiving groove until the fitting opening is connected to the raceway, and when the extrusion die and the pressure-bearing die are fitted, the end surface of the extrusion die fitting the pressure-bearing die is distributed in the enclosure of the fitting opening.

[0009] The present invention is further configured as follows: both inner walls of the fitting opening are formed into wavy arc surfaces, and a plurality of wave crests and a plurality of wave troughs of the wavy arc surfaces are spaced apart and distributed along the height direction of the pressure-bearing die.

[0010] The present invention is further configured as follows: the blowing assembly includes an air pump and an air duct connecting the air pump and the deformation groove, the air duct includes a plurality of vent holes opened on the pressure-bearing mold and pipes distributed on the bracket, the pipes are connected to the plurality of vent holes, and the plurality of vent holes are evenly connected to the roller track along the lower end of the roller track.

[0011] The present invention is further configured as follows: it also includes a base, in which a driving element is provided for driving the bracket to rotate around the base, there are several groups of extrusion dies and pressure-bearing dies on the bracket, and the several groups of extrusion dies and pressure-bearing dies are evenly distributed around the rotation axis of the bracket, and an air baffle is fixedly connected to the base for blocking the pipeline from being connected to several air holes on several pressure-bearing dies, and at this time, the pressure-bearing dies blocked by the air baffle are not in contact with the extrusion die.

[0012] The present invention is further configured as follows: a material unloading component and a conveyor belt are provided on the base, the material unloading component includes a telescopic part and a clamping part, one end of the telescopic part is fixedly connected to the base, and the other end of the telescopic part can drive the clamping part to move back and forth, and the clamping part can be taken away from the shell together with the pressure mold from the bracket until the shell and the pressure mold both fall on the conveyor belt.

[0013] In summary, the present invention has the following beneficial effects: by providing a plurality of ball bearings that can reciprocate along the deformation groove, and by continuously blowing air into the deformation groove when the product is pressed and formed, the material can be cooled more in the upper cover groove, thereby effectively reducing the degree of distortion of the product during cooling and forming, so that the overall structure of the cooled product and the surface shape of both ends of the product can be closer to the preset mold cavity shape surrounded by the two soft molds. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 It is a structural schematic diagram of the present invention;

[0015] Figure 2 It is a cross-sectional view of the present invention;

[0016] Figure 3 for Figure 1 The enlarged view of point A in the middle;

[0017] Figure 4 for Figure 2 The enlarged view of point B in the middle;

[0018] Figure 5 It is a schematic structural diagram of the extrusion die and the pressure-bearing die of the present invention;

[0019] Figure 6 for Figure 2 Enlarged view of point C in the middle.

[0020] In the figure: 1. base; 2. bracket; 3. extrusion die; 31. upper cover groove; 4. pressure-bearing die; 41. lower containing groove; 42. deformation groove; 421. raceway; 422. fitting mouth; 43. vent; 5. pusher; 6. shell; 7. ball bearing; 8. blowing assembly; 81. air pump; 82. pipeline; 83. air baffle; 9. unloading assembly; 91. telescopic member; 92. clamping member; 10. conveyor belt. DETAILED DESCRIPTION

[0021] The technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention. In the description of the present invention, it should be understood that the directions or positional relationships indicated by the terms "upper", "lower", "front", "back", "left", "right", "top", "bottom", "inside" and "outside" are based on the directions or positional relationships shown in the drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific direction, be constructed and operated in a specific direction, and therefore cannot be understood as limiting the present invention. Obviously, the embodiments described are only some embodiments of the present invention, rather than all embodiments.

[0022] A pressing and forming machine, such as Figures 1 to 5 As shown, it includes a base 1 and a bracket 2, the bracket 2 is provided with an extrusion die 3 with an upper cover groove 31 and a pressure-bearing die 4 with a lower containing groove 41, the bracket 2 is provided with a pushing member 5 for pushing the extrusion die 3 to elastically extrude the pressure-bearing die 4, a shell 6 is placed on the bracket 2 to fit the circumference of the pressure-bearing die 4, the pressure-bearing die 4 and the extrusion die 3 are both soft molds made of silicone material, a driving element for driving the bracket 2 to rotate around the base 1 is provided in the base 1, and there are several groups of extrusion dies 3 and pressure-bearing dies 4 on the bracket 2, and the several groups of extrusion dies 3 and pressure-bearing dies 4 are evenly distributed around the rotation axis of the bracket 2;

[0023] Among them, the equipment of this embodiment is a semi-automatic equipment, which mainly relies on manual labor to place the shell 6 with the pressure mold 4 into the twelve grids separated on the equipment in a translational manner. In order to reduce labor costs, a blanking component 9 and a conveyor belt 10 are provided on the base 1. The blanking component 9 includes a telescopic part 91 and a clamping part 92. One end of the telescopic part 91 is fixedly connected to the base 1, and the other end of the telescopic part 91 can drive the clamping part 92 to move back and forth. The clamping part 92 can be taken away from the shell 6 together with the pressure mold 4 from the bracket 2 until the shell 6 and the pressure mold 4 fall on the conveyor belt 10.

[0024] like Figures 4 to 6 As shown, the pressure-bearing die 4 is provided with deformation grooves 42 distributed around the lower receiving groove 41, and a plurality of balls 7 are movably arranged in the deformation grooves 42. A blowing assembly 8 for continuously blowing gas into the deformation grooves 42 is arranged on the bracket 2. When the pushing member 5 pushes the extrusion die 3 to abut against the pressure-bearing die 4, the inner wall of the deformation groove 42 elastically squeezes the plurality of balls 7, so that the balls 7 are close to the pressure-bearing die 4. At this time, the blowing assembly 8 is started to blow the plurality of balls 7 to roll along the deformation groove 42 for a plurality of circles. In this process, the notch of the lower receiving groove 41 coincides with the notch of the upper cover groove 31, and the ball center positions of the plurality of balls 7 are always lower than the groove bottom edge distribution of the lower receiving groove 41. The flow rate of the gas injected into the deformation groove 42 by the blowing assembly 8 gradually decreases from the peak value of the gas flow rate.

[0025] Among them, the time length for which the blowing component 8 continuously passes gas into the deformation groove 42 is greater than or equal to the time length for which the extrusion die 3 and the pressure die 4 are in contact with each other. In this specific implementation, part of the structure of the ball 7 is still located above the bottom of the lower groove 41, so that the ball 7 applies deformation to the side wall of the lower groove 41. The setting of the shell 6 makes the extrusion die 3 extruding the pressure die 4 so that the pressure die 4 is more inclined to occur in the deformation groove 42, that is, the peripheral shape of the pressure die 4 is converged during extrusion.

[0026] Principle of use: During the process of pressing the extrusion die 3 and the pressure die 4, the pressing molding machine continuously introduces gas into the deformation groove 42 to accelerate the cooling rate of the material in the rheological state. At the same time, the high-speed flow of the gas and the flow of the gas along the deformation groove 42 after being injected into the deformation groove 42 until it flows out of the deformation groove 42 make it easier for the material in the lower containment groove 41 to fill the lower containment groove 41, so that the material fits the surface shape of the inner end surface of the lower containment groove 41 more accurately. During the flow of the gas, part of the heat on the pressure die 4 is also taken away, which effectively alleviates the heat deformation of the lower containment groove 41 due to continuous contact with the material, and then the pressure die 4 is difficult to quickly restore the deformation, making it easier to demold the product formed by cooling the material;

[0027] In addition, when the ball 7 is pressing the object in the pressing molding machine, it can maintain the direction of the upper cover groove 31 by pushing up the bottom of the lower containing groove 41, and then push up most of the material contained in the lower containing groove 41 to keep it in the upper cover groove 31 for cooling, effectively reducing the degree of distortion of the product during cooling and molding. At the same time, the material in the upper cover groove 31 can gradually fill the upper cover groove 31 from the center position of the upper cover groove 31 toward the surrounding side of the upper cover groove 31.

[0028] Practical effect: by arranging a plurality of balls 7 that can reciprocate along the deformation groove 42, and by continuously blowing air into the deformation groove 42 by the blowing assembly 8 when the product is pressed and formed, the material can be cooled more in the upper cover groove 31, and the degree of distortion of the product during cooling and forming is effectively reduced, so that the overall structure of the cooled product and the surface shapes of both ends of the product can be closer to the preset mold cavity shape surrounded by the two soft molds.

[0029] like Figures 4 to 6As shown, specifically, the deformation groove 42 includes a raceway 421 for accommodating the ball 7 and an engaging opening 422 for connecting the raceway 421 with the outside of the pressure-bearing die 4. The cross section of the raceway 421 is an oblong structure. The shape design of the oblong structure allows the ball 7 to roll smoothly in the raceway 421, and the diameter of the oblong structure can normally allow the ball 7 to roll against the circumference of the raceway 421 when the raceway 421 is not squeezed. When the extrusion die 3 squeezes the pressure-bearing die 4, the ball 7 is squeezed by the inner wall of the raceway 421 to move to a side close to the lower receiving groove 41 until the ball 7 abuts against the inner wall of the raceway 421. The engaging opening 422 is spaced apart from the inner wall of the lower receiving groove 41 and away from the inner wall of the lower receiving groove 41. As the extrusion die 3 squeezes the pressure-bearing die 4, the two inner walls of the engaging opening 422 gradually approach each other.

[0030] The fitting opening 422 is gradually formed from a position away from the lower containing groove 41 toward the lower containing groove 41 until the fitting opening 422 is connected to the raceway 421. When the extrusion die 3 and the pressure-bearing die 4 are fitted, the end surface of the extrusion die 3 fitting the pressure-bearing die 4 is distributed in the encirclement of the fitting opening 422. In order to allow the gas to push the plurality of balls 7 to roll more preferentially before flowing out of the fitting opening 422, the two inner walls of the fitting opening 422 are both formed into wavy arc surfaces, and the plurality of peaks and the plurality of troughs of the wavy arc surfaces are spaced apart along the height direction of the pressure-bearing die 4, that is, through the deformation of the deformation groove 42, the two wavy arc surfaces are close to each other, so as to increase the barrier to the gas flowing out of the deformation groove 42 and reduce the situation where the gas directly flows out of the deformation groove 42 along the two wavy gaps after entering the deformation groove 42.

[0031] like Figures 1 to 6 As shown, the blowing assembly 8 includes an air pump 81 and an air channel connecting the air pump 81 and the deformation groove 42, the air channel includes a plurality of vent holes 43 opened on the pressure mold 4 and a pipe 82 distributed on the bracket 2, the pipe 82 is connected with the plurality of vent holes 43, and the plurality of vent holes 43 are evenly connected to the roller 421 along the lower end of the roller 421. In order to make the gas pumped out by the air pump 81 more efficient during the use of the equipment, an air baffle plate 83 is fixedly connected to the base 1 for blocking the pipe 82 from being connected with the plurality of vent holes 43 on the pressure mold 4, and at this time, the pressure mold 4 blocked by the air baffle plate 83 is not in contact with the extrusion mold 3, that is, the air baffle plate 83 can allow the gas to pass only into the pressure mold 4 that is being pressed during the rotation of the bracket 2.

[0032] In this specific embodiment, one side of the pipeline 82 is divided into several pipe openings that all pass through the bracket 2 and face the bottom of the pressure-bearing mold 4, and then connect to several air holes 43 of the pressure-bearing molds 4. The other side of the pipeline 82 is connected to the air pump 81. The pusher 5 is a buffer cylinder. The operation of the buffer cylinder is stable. The buffer cylinder is connected to the gas exchanger fixed on the bracket 2 through the first air pipe and the second air pipe respectively, and then the gas exchanger is connected to the airway through the third air pipe, so that the device can control the operation of several buffer cylinders through a pipeline 82 and several gas exchangers.

[0033] It will be apparent to those skilled in the art that the invention is not limited to the details of the exemplary embodiments described above and that the invention can be implemented in other specific forms without departing from the spirit or essential features of the invention. Therefore, the embodiments should be considered exemplary and non-limiting in all respects, and the scope of the invention is defined by the appended claims rather than the foregoing description, and it is intended that all variations falling within the meaning and scope of the equivalent elements of the claims be included in the invention. Any reference numeral in a claim should not be considered as limiting the claim to which it relates.

[0034] In addition, it should be understood that although the present specification is described according to implementation modes, not every implementation mode contains only one independent technical solution. This description of the specification is only for the sake of clarity. Those skilled in the art should regard the specification as a whole. The technical solutions in each embodiment may also be appropriately combined to form other implementation modes that can be understood by those skilled in the art.

Claims

1. A compression molding machine, comprising a bracket, on which an extrusion die having an upper cover groove and a pressure-bearing die having a lower receiving groove are arranged, characterized in that: The support is provided with a pushing member for pushing the extrusion die to elastically extrude the pressure-bearing die, a shell is placed on the support to fit the surrounding side of the pressure-bearing die, the pressure-bearing die is provided with a deformation groove distributed around the lower receiving groove, a plurality of balls are movably arranged in the deformation groove, the center position of the ball is lower than the bottom edge of the lower receiving groove, and a blowing component is provided on the support to continuously blow gas into the deformation groove, so that when the inner wall of the deformation groove elastically squeezes a plurality of balls close to the pressure-bearing die, the blowing component blows A plurality of balls roll along the deformation groove for several circles, and the deformation groove includes a raceway for accommodating the balls and a fitting opening for connecting the raceway with the outside of the pressure-bearing die. The cross-section of the raceway is an oblong structure. When the extrusion die extrude the pressure-bearing die, the balls are squeezed by the inner wall of the raceway and move to the side close to the lower containing groove until the balls abut against the inner wall of the raceway. The fitting opening is spaced apart from the inner wall of the lower containing groove and the fitting opening is away from the inner wall of the lower containing groove. As the extrusion die squeezes the pressure-bearing die, the two inner walls of the fitting opening gradually approach each other.

2. A compression molding machine according to claim 1, characterized in that: The fitting opening is gradually formed from a position away from the lower receiving groove toward the lower receiving groove until the fitting opening is connected to the raceway. When the extrusion die and the pressure-bearing die are fitted, the end surface of the extrusion die fitting the pressure-bearing die is distributed in the surrounding of the fitting opening.

3. A compression molding machine according to claim 2, characterized in that: Both inner walls of the fitting opening are formed into wave-shaped arc surfaces, and a plurality of wave crests and a plurality of wave troughs of the wave-shaped arc surfaces are distributed at intervals along the height direction of the pressure-bearing mold.

4. A compression molding machine according to claim 1, characterized in that: The blowing assembly includes an air pump and an air channel connecting the air pump and the deformation groove. The air channel includes a plurality of vents opened on the pressure-bearing mold and pipes distributed on the bracket. The pipes are connected to the plurality of vents, and the plurality of vents are evenly connected to the roller along the lower end of the roller.

5. A compression molding machine according to claim 4, characterized in that: It also includes a base, in which a driving element is provided for driving the bracket to rotate around the base, and there are several groups of extrusion dies and pressure-bearing dies on the bracket, and the several groups of extrusion dies and pressure-bearing dies are evenly distributed around the rotation axis of the bracket, and an air baffle is fixedly connected to the base for blocking the pipeline from being connected to several air holes on several pressure-bearing dies, and at this time, the pressure-bearing dies blocked by the air baffle are not in contact with the extrusion die.

6. A compression molding machine according to claim 5, characterized in that: The base is provided with a material unloading component and a conveyor belt, the material unloading component includes a telescopic part and a clamping part, one end of the telescopic part is fixedly connected to the base, and the other end of the telescopic part can drive the clamping part to move back and forth, and the clamping part can be taken away from the shell together with the pressure-bearing mold from the bracket until the shell and the pressure-bearing mold fall on the conveyor belt.

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