Rapid forming equipment for thin-wall multi-cavity mold

Abstract

The invention relates to the field of forming equipment, and particularly discloses thin-wall multi-cavity mold rapid forming equipment which comprises a base and a digital display control panel. An injection molding machine used for injection molding towards the mold, an upper mold structure, a lower mold structure and a conveyor used for conveying and moving a formed product are arranged between the supporting vertical rods from top to bottom. The lower mold structure comprises two lower mold tables which are oppositely arranged, a ventilation gap is formed between the two lower mold tables, and a plurality of mold cavities are formed in the opposite sides of the two lower mold tables; through mutual cooperation and cooperation of the upper mold structure, the lower mold structure, the injection molding machine, the motor, the discharging assembly, the clamping structure, the pressure detection structure, the lifting driving assembly and the like, rapid cooling forming of the multi-cavity mold can be achieved, under overturning and lifting driving, injection molding and cooling discharging during product forming can be achieved at the same time, and the production efficiency is improved. And the product forming efficiency is greatly improved.

Description

Technical Field

[0001] This invention relates to the field of molding equipment, and more specifically to a rapid prototyping equipment for thin-walled multi-cavity molds. Background Technology

[0002] During the injection molding process, the molten colloid needs to be continuously extruded and shaped through the mold. However, when the molten colloid is extruded, a lot of heat is generated. The molten colloid needs to be cooled to dissipate the heat before it can be shaped. Usually, people simply place the molten colloid to cool naturally. Since the natural cooling rate is slow, it takes a lot of time, and the longer the cooling time, the lower the efficiency of subsequent work.

[0003] A rapid prototyping device for thin-walled multi-cavity molds, disclosed in CN110696262B, includes a mounting base, a stamping die sleeve, a stamping block, a circulating pump, a cooling water pipe, a heat-conducting sleeve, a Stirling pump body, a movable sleeve, a movable rod, and a movable piston; the mounting base has a stamping die sleeve embedded in the middle of its top, which allows the molten colloid to be placed.

[0004] A rapid prototyping device for thin-walled multi-cavity molds, disclosed in CN114654643A, includes a molding box. A hot stamping part for forming thin-walled multi-cavity molds is provided on the top wall of the molding box. Hot air pipes and cold air pipes are respectively provided through the molding box on both sides of the hot stamping part. A discharge pipe is also provided on the molding box, and a heating platform for melting the molten colloid into a molten plastic state is provided on the discharge pipe.

[0005] In the field of thin-walled multi-cavity mold forming, traditional forming equipment has many shortcomings. For example, the mold has low heat dissipation efficiency, resulting in a long forming cycle; the demolding process is not automated enough and relies on manual operation, which is not only inefficient but also poses a risk of product damage; in addition, the unloading process lacks a slow-descent measure, which makes the formed product susceptible to damage from impact during the fall, and cannot meet the modern industrial demand for rapid and high-quality forming of thin-walled multi-cavity molds. Summary of the Invention

[0006] (a) Technical problems to be solved

[0007] The purpose of this invention is to provide a rapid prototyping device for thin-walled multi-cavity molds in order to solve the above-mentioned problems.

[0008] (II) Technical Solution

[0009] To achieve the above objectives, the present invention provides the following technical solution:

[0010] The present invention provides a rapid prototyping equipment for thin-walled multi-cavity molds, including a base and a digital display control panel. The base is provided with two or more support rods, and between the support rods, from top to bottom, are an injection molding machine for injection molding towards the mold, an upper mold structure, a lower mold structure, and a conveyor for transporting and moving the molded product.

[0011] The lower mold structure includes two lower mold platforms arranged opposite each other, with a ventilation gap between the two lower mold platforms, and several mold cavities are opened on the opposite side of each of the two lower mold platforms.

[0012] The support column is equipped with a lifting drive assembly for lifting and lowering the lower mold structure. The lifting drive assembly is equipped with a rotation drive structure for flipping the lower mold structure. The upper mold structure is equipped with a pressure detection structure for detecting docking and cooperation with the lower mold structure.

[0013] Furthermore, a feeding pipe is provided on the upper side of the injection molding machine, an injection pipe is provided on the lower side of the injection molding machine, and a fixing frame is provided between the outer side of the injection molding machine and the supporting column. The fixing frame is fixedly connected to the supporting column and the injection molding machine by bolts. The fixing frame is rectangular in shape.

[0014] Furthermore, the upper mold structure includes an upper pressure plate, and a plurality of mold cores that mate with the mold cavity are provided on the lower side of the upper pressure plate. A connecting pipe is provided on the upper side of the upper pressure plate, and the upper end of the connecting pipe and the lower end of the injection tube are connected to each other in a sealed manner. Two hangers are provided on both sides of the connecting pipe, symmetrically distributed around the connecting pipe. The lower ends of the two hangers are fixedly installed on the upper side of the upper pressure plate, and the upper ends of the two hangers are connected to the connecting holes opened at corresponding positions on the fixed frame. The fixed frame is threaded with set bolts for fixing the hangers.

[0015] Furthermore, several heat dissipation ribs are evenly distributed at the location of the mold cavity within the ventilation gap. The two lower mold platforms each have a central hole on their opposite sides. The mold cavities are evenly distributed around the central hole. Each mold cavity is connected to the central hole by a connecting channel. A conical hole is formed at the connection between the connecting channel and the mold cavity. The tip of the conical hole faces the mold cavity and is connected to each other. A cooling fan is installed within the ventilation gap. The output terminal of the digital display control panel is electrically connected to the input terminal of the cooling fan.

[0016] Furthermore, two second electric telescopic rods are installed in the ventilation gap between the two central holes. The push rod ends of the two second electric telescopic rods are arranged opposite each other and are respectively fixedly connected to push columns. A push channel for sliding through the push columns is opened between the central holes and the ventilation gap. When the push rod of the second electric telescopic rod reaches its minimum stroke, the end of the push column is flush with the inner end face of the central hole. The output end of the digital display control panel is electrically connected to the input end of the second electric telescopic rod.

[0017] Furthermore, the lifting drive assembly includes a lifting slide groove formed on the support column, a slider is slidably arranged in the lifting slide groove along the vertical direction, a hydraulic cylinder for driving the slider to move up and down is fixedly arranged in the lifting slide groove, a connecting platform is fixedly connected between the two sides of the two lower mold platforms, the connecting platform is rotatably connected to the slider through a support shaft, the rotation drive structure is fixed on one of the sliders, and the output end of the digital display control panel is electrically connected to the input end of the hydraulic cylinder.

[0018] Furthermore, the rotary drive structure includes a motor, the output shaft of which is connected to the support shaft via a reducer, the reducer being fixedly mounted on the slider, and the output end of the digital display control panel being electrically connected to the input end of the motor.

[0019] Furthermore, each of the connecting platforms is provided with a locking structure on both the upper and lower sides to lock the molded product in the mold cavity. The locking structure includes a fixed seat fixedly mounted on the connecting platform, a cylinder fixedly mounted on the fixed seat, a locking plate fixedly connected to the push rod head of the cylinder, and the output end of the digital display control panel electrically connected to the input end of the cylinder.

[0020] Furthermore, the outer side of the lower mold structure is provided with a feeding assembly for slowing down the falling of the molded product. The feeding assembly includes a support ring, which is fixedly mounted on a support rod. Two side baffles are fixedly mounted on the support ring by bolts. Each side baffle has a claw plate hinged to its outer side by a hinge seat. The claw plate has a gripper on its lower side. The grippers of the two feeding assemblies are arranged from wide to narrow from top to bottom. One end of an eccentric rod is fixedly connected to the claw plate. The other end of the eccentric rod is hinged to the side baffle and a first electric telescopic rod is provided. The output end of the digital display control panel is electrically connected to the input end of the first electric telescopic rod.

[0021] Furthermore, the pressure detection structure includes a cylindrical detection sleeve with a protruding edge plate on the outer side. The edge plate is fixed to the upper pressure plate by bolts. The inside of the detection sleeve is hollow and open at the lower end. A pressure sensor is provided on the top side of the inner side of the detection sleeve. A detection contact is slidably provided at the lower opening of the detection sleeve. A spring connects the detection contact and the pressure sensor. The output end of the pressure sensor is electrically connected to the input end of the first electric telescopic rod.

[0022] (III) Beneficial Effects

[0023] Compared with the prior art, the beneficial effects of the present invention are as follows:

[0024] 1. Through the coordination and cooperation of the upper mold structure, lower mold structure, injection molding machine, motor, material unloading component, clamping structure, pressure detection structure and lifting drive component, rapid cooling and molding of multi-cavity molds can be achieved. Under the flipping and lifting drive, injection molding and cooling unloading of products can be achieved simultaneously, which greatly improves product molding efficiency.

[0025] 2. The mold cavity of the lower mold structure is equipped with heat dissipation ribs, which, together with the cooling fan in the ventilation gap, greatly improve the heat dissipation efficiency of each molding cavity, accelerate product cooling, shorten the molding cycle, and improve production efficiency.

[0026] 3. The pressure detection structure of the upper mold uses components such as detection contacts and pressure sensors to monitor the docking pressure of the upper and lower molds in real time, ensuring accurate mold docking, reducing product defects caused by poor docking, and improving product molding quality.

[0027] 4. The lifting drive assembly, together with the second electric telescopic rod, push column, etc., realizes the lifting and automatic demolding of the lower mold structure, reduces manual intervention, improves production efficiency, and reduces the risk of product damage during demolding.

[0028] 5. The locking structure on the connecting platform uses cylinders and locking plates to firmly lock the molded product in the mold cavity before injection molding, preventing the product from shifting during injection molding and ensuring the stability and reliability of product molding.

[0029] 6. Driven by the first electric telescopic rod, the grippers of the unloading component slow down the falling molded product to prevent damage from free fall impact, effectively protect the finished product and improve the product qualification rate.

[0030] 7. The digital display control panel provides unified control of all electric, hydraulic, and pneumatic components. It allows for flexible adjustment of equipment operating parameters according to different product requirements, enabling intelligent production and improving the equipment's versatility and adaptability. Attached Figure Description

[0031] To more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0032] Figure 1 This is a schematic diagram of the main structure of the present invention;

[0033] Figure 2 This is the present invention. Figure 1 A schematic diagram of the three-dimensional structure in the first direction;

[0034] Figure 3 This is the present invention. Figure 1 A schematic diagram of the AA cross-sectional structure;

[0035] Figure 4 This is the present invention. Figure 1 A magnified schematic diagram of the structure at point B;

[0036] Figure 5 This is the present invention. Figure 3 A magnified schematic diagram of the structure at point C;

[0037] Figure 6 This is the present invention. Figure 3 A magnified schematic diagram of the structure at point D;

[0038] Figure 7 This is the present invention. Figure 1 A schematic diagram of the second-direction three-dimensional structure;

[0039] Figure 8 This is the present invention. Figure 1 A schematic diagram of the third-party three-dimensional structure;

[0040] Figure 9 This is a three-dimensional structural diagram of the lower mold structure of the present invention.

[0041] The reference numerals in the attached drawings are explained as follows: 1. Base; 101. Supporting column; 102. Fixing frame; 103. Hanging rod; 2. Upper mold structure; 201. Upper pressure plate; 202. Connecting pipe; 203. Mold core; 3. Lower mold structure; 301. Lower mold platform; 302. Connecting platform; 303. Center hole; 304. Connecting channel; 305. Mold cavity; 306. Heat dissipation ribs; 307. Tapered hole; 4. Injection molding machine; 401. Injection pipe; 402. Feeding pipe; 5. Motor; 501. Reducer; 6. Unloading assembly; 601. Side baffle; 602. Claw plate; 603. Gripper; 6 04. Hinge seat; 605. First electric telescopic rod; 606. Bracket ring; 607. Eccentric rod; 7. Locking structure; 701. Fixed seat; 702. Locking plate; 703. Cylinder; 8. Pressure detection structure; 801. Detection sleeve; 802. Edge plate; 803. Spring; 804. Pressure sensor; 805. Detection contact; 9. Lifting drive assembly; 901. Lifting slide; 902. Hydraulic cylinder; 903. Slider; 904. Support shaft; 10. Digital display control panel; 11. Transmission machine; 12. Second electric telescopic rod; 13. Push column; 14. Cooling fan. Detailed Implementation

[0042] To make the objectives, technical solutions, and advantages of this invention clearer, the technical solutions of this invention will be described in detail below. Obviously, the described embodiments are merely some embodiments of this invention, and not all embodiments. Based on the embodiments of this invention, all other implementation methods obtained by those skilled in the art without creative effort are within the scope of protection of this invention.

[0043] See Figures 1-9 As shown, the present invention provides a rapid prototyping device for thin-walled multi-cavity molds, including a base 1 and a digital display control panel 10. The base 1 is provided with two or more support rods 101. Between the support rods 101, from top to bottom, are respectively an injection molding machine 4 for injection molding towards the mold, an upper mold structure 2, a lower mold structure 3, and a conveyor 11 for transporting and moving the molded product. The lower mold structure 3 includes two opposing lower mold platforms 301, with a ventilation gap between them. Each of the two lower mold platforms 301 has several mold cavities 305 on its opposite side. The support rods 101 are provided with a lifting drive assembly 9 for lifting and lowering the lower mold structure 3. The lifting drive assembly 9 is provided with a rotation drive structure for flipping the lower mold structure 3. The upper mold structure 2 is provided with a pressure detection structure 8 for detecting docking and mating with the lower mold structure 3.

[0044] See instruction manual attached Figure 2As shown, the feeding pipe 402 is located on the upper side of the injection molding machine 4 and serves as the inlet channel for plastic raw materials. It is used to transport solid plastic granules and other raw materials into the injection molding machine, providing a material source for injection molding. The injection pipe 401 is located on the lower side of the injection molding machine 4. The molten plastic, after being heated, melted, and plasticized by the injection molding machine, is transported downwards through this pipe and injected into the mold, completing the key material transfer link in injection molding. The fixing frame 102 is a rectangular frame and is fixedly connected to the support column 101 and the injection molding machine 4 by bolts. Its function is to stabilize the position of the injection molding machine 4, prevent the injection molding machine 4 from shifting due to vibration, pressure, or other factors during operation, and ensure the stability and accuracy of the injection molding process.

[0045] See instruction manual attached Figure 1 , Figure 2 , Figure 3 , Figure 5 and Figure 9 As shown, the upper pressure plate 201, as the main load-bearing component of the upper mold structure 2, supports and fixes components such as the mold core 203. During mold closing, it cooperates with the lower mold structure 3 to provide the upper part of the molding space for the molded product. The mold core 203 is located on the lower side of the upper pressure plate 201 and corresponds one-to-one with the mold cavity 305 in the lower mold structure 3. During injection molding, the mold core and mold cavity together constitute the molding cavity of the product, determining the specific shape and size of the molded product, and are key components for product molding. The connecting pipe 202 is located on the upper side of the upper pressure plate 201, and its upper end is connected to the lower end of the injection pipe 401 of the injection molding machine in a sealed manner. Its function is to introduce the plasticized molten plastic from the injection molding machine into the upper mold structure, ensuring that the molten plastic can flow smoothly into the molding cavity formed by the mold core and mold cavity; it is a key channel for molten plastic transmission. The hanger rods 103 are symmetrically distributed on both sides of the connecting pipe 202, with their lower ends fixed to the upper side of the upper pressure plate 201 and their upper ends connected to the connecting holes of the fixing frame 102. Its main function is to suspend the upper pressure plate, ensuring the upper mold structure is stably positioned and moving smoothly during mold closing and opening. The set bolts are threaded to the fixing frame 102 and are used to secure the hanger rod 103. By tightening the set bolts, the position of the hanger rod can be adjusted and locked, thereby precisely adjusting the height and position of the upper mold structure to ensure accurate alignment of the upper and lower molds during mold closing.

[0046] A plurality of evenly distributed heat dissipation ribs 306 are provided at the positions of the mold cavities 305 within the ventilation gap. Two lower mold platforms 301 each have a central hole 303 on their opposite sides. The mold cavities 305 are evenly distributed around the central holes 303. Each mold cavity 305 is connected to a connecting channel 304 via a connecting channel 304. A tapered hole 307 is formed at the connection between the connecting channel 304 and the mold cavity 305, with the tip of the tapered hole 307 facing the mold cavity 305 and connected to each other. A cooling fan 14 is installed within the ventilation gap, and the output of the digital display control panel 10 is electrically connected to the input of the cooling fan 14. Through this specific structural design, the heat dissipation ribs 306 at the positions of the mold cavities 305 within the ventilation gap between the two lower mold platforms 301 increase the heat dissipation area of ​​the mold cavity. Combined with the cooling fan 14 within the ventilation gap, this quickly removes heat from the mold cavity and the product during injection molding, accelerating the cooling process. The digital display control panel 10 controls the start, stop and speed of the cooling fan 14, and can flexibly adjust the heat dissipation efficiency according to actual production needs, which helps to improve the quality and production efficiency of molded products and prevent problems such as product deformation and dimensional deviation caused by high temperature.

[0047] Two second electric telescopic rods 12 are installed in the ventilation gap between the two central holes 303. The push rod ends of the two second electric telescopic rods 12 are set back from each other and are respectively fixedly connected to pusher columns 13. A pusher channel is opened through the central hole 303 and the ventilation gap for sliding through the pusher column 13. When the push rod of the second electric telescopic rod 12 reaches its minimum stroke, the end of the pusher column 13 is flush with the inner end face of the central hole 303. The output end of the digital display control panel 10 is electrically connected to the input end of the second electric telescopic rod 12. Through the coordinated work of the second electric telescopic rods 12, pusher columns 13, pusher channels, and digital display control panel 10, an automated demolding system is constructed. After the product is injection molded in the mold cavity 305 and cooled, the operator issues a command through the digital display control panel 10, and the digital display control panel 10 outputs an electrical signal to control the second electric telescopic rod 12 located below to start. The push rod of the second electric telescopic rod 12 drives the fixedly connected pusher column 13, causing the pusher column 13 to slide within the pusher channel that passes through the center hole 303 and the ventilation gap. The pusher column 13 pushes the molded product out of the mold cavity 305 and the center hole 303 of the lower mold structure along the pusher channel, achieving a fast, stable, and precise demolding operation. When the push rod of the second electric telescopic rod 12 reaches its minimum stroke, the end of the pusher column 13 is flush with the inner end face of the center hole 303, avoiding interference with the next injection molding. This process reduces manual intervention, improves production efficiency, and ensures the consistency and reliability of the demolding action, while reducing the risk of product damage during demolding.

[0048] See instruction manual attached Figure 2 , Figure 7 and Figure 8 As shown, the lifting drive assembly 9 includes a lifting slide 901 formed on the support rod 101. A slider 903 is slidably disposed in the lifting slide 901 along the vertical direction. A hydraulic cylinder 902 for driving the slider 903 to move up and down is fixedly disposed in the lifting slide 901. A connecting platform 302 is fixedly connected between the two sides of the two lower mold platforms 301. The connecting platform 302 is rotatably connected to the slider 903 through a support shaft 904. The rotation drive structure is fixed on one of the sliders 903. The output end of the digital display control panel 10 is electrically connected to the input end of the hydraulic cylinder 902. Through the above specific structural design, the lifting and rotation functions of the lower mold structure 3 are realized through the coordinated work of the support rod 101, lifting slide 901, slider 903, hydraulic cylinder 902, connecting platform 302, support shaft 904, and digital display control panel 10. During injection molding, the digital display control panel 10 controls the hydraulic cylinder 902 to drive the slider 903 to move within the lifting slide 901, causing the lower mold structure 3 to rise and close with the upper mold structure 2, completing the injection molding process. After injection molding, the lower mold structure 3 descends to open the mold. Furthermore, the lower mold structure 3 can also rotate via a support shaft 904 under the action of a rotary drive structure, facilitating subsequent operations such as demolding and mold cleaning. This design improves the automation level and production efficiency of the equipment while ensuring the stability and accuracy of the lower mold structure's movement.

[0049] The rotary drive structure includes a motor 5. The output shaft of the motor 5 is connected to the support shaft 904 via a reducer 501. The reducer 501 is fixedly mounted on the slider 903. The output end of the digital display control panel 10 is electrically connected to the input end of the motor 5.

[0050] See instruction manual attached Figure 1 and Figure 4As shown, each connecting platform 302 has a locking structure 7 on both its upper and lower sides to lock the molded product in the mold cavity 305. The locking structure 7 includes a fixed base 701 fixedly mounted on the connecting platform 302, a cylinder 703 fixedly mounted on the fixed base 701, and a locking plate 702 fixedly connected to the push rod end of the cylinder 703. The output end of the digital display control panel 10 is electrically connected to the input end of the cylinder 703. Through the above specific structural design, the connecting platform 302, fixed base 701, cylinder 703, locking plate 702, and digital display control panel 10 work together to form a precisely controllable locking system. Before injection molding, after the separation of the upper mold structure 2 and the lower mold structure 3, the digital display control panel 10 controls the cylinder 703 to push the locking plate 702 out, firmly locking the molded product in the mold cavity 305. This ensures the product remains stable during injection molding, avoids product molding defects due to positional changes, and improves product molding quality and yield. After the product injection molding is completed, the digital display control panel controls the cylinder again to retract the clamping plate, releasing it from the product and facilitating subsequent demolding. The entire clamping process is highly automated, precise, and convenient, effectively improving the production reliability and product quality of the thin-walled multi-cavity mold rapid prototyping equipment.

[0051] See instruction manual attached Figure 2 , Figure 3 and Figure 7 As shown, the outer side of the lower mold structure 3 is provided with a feeding component 6 for slowing down the falling of the molded product. The feeding component 6 includes a support ring 606, which is fixedly mounted on the support rod 101. As the basic support component of the feeding component 6, it provides an installation carrier for other components such as the side baffle 601, ensuring that the feeding component is stably installed on the equipment and ensuring the stability of the entire feeding process.

[0052] The side baffle 601 is fixed to the bracket ring 606 by bolts, which serves to limit and guide the movement of the claw plate 602, while also initially blocking and guiding the falling molded product so that it can accurately enter the working range of the gripper 603.

[0053] The hinge seat 604 is used to connect the side baffle 601 and the claw plate 602, enabling the claw plate to rotate hingedly around it, providing a pivot point for the swing of the claw plate 602, and is a key connecting component for realizing the action of the claw plate.

[0054] The outer side of the claw plate 602 is hinged to the side baffle 601 via the hinge seat 604, and the lower side is provided with a gripper 603. Driven by the first electric telescopic rod 605, the gripper 603 moves by rotating around the hinge seat 604, thereby realizing the clamping and release of the molded product.

[0055] The gripper 603 is located on the lower side of the gripper plate 602 and directly contacts the molded product to hold the falling product. The grippers 603 of the two feeding components 6 are arranged from wide to narrow from top to bottom, which can adapt to the size changes of the product at different stages of falling, gradually buffering and holding the product to achieve a slow descent effect.

[0056] One end of the eccentric rod 607 is fixed to the claw plate 602, and the other end is hinged to the first electric telescopic rod 605 and the side baffle 601. It converts the telescopic motion of the first electric telescopic rod 605 into the swing motion of the claw plate 602. It is an important component for transmitting power and changing the motion mode.

[0057] The first electric telescopic rod 605 extends and retracts under the control of the digital display control panel 10. Through cooperation with the eccentric rod 607, it drives the claw plate 602 to swing around the hinge seat 604, thereby controlling the opening and closing degree of the gripper 603 and realizing the adjustment of the clamping force and the slow descent action of the molded product.

[0058] The digital display control panel 10 receives instructions from the operator and outputs electrical signals to control the operation of the first electric telescopic rod 605, precisely adjusting the extension speed and stroke of the first electric telescopic rod, thereby controlling the action of the gripper 603 to adapt to the slow descent requirements of different sized molded products.

[0059] In practical applications, when the molded product falls from the lower mold structure 3, the digital display control panel 10 controls the first electric telescopic rod 605 to move, which in turn drives the claw plate 602 to swing via the eccentric rod 607, causing the two grippers 603 to move closer together and close to receive the product. As the product falls, the grippers 603 gradually tighten, utilizing the structural characteristic of being wide to narrow from top to bottom to gradually buffer and hold the product, slowing down the falling speed and preventing damage from impacts during free fall. Then, the first electric telescopic rod 605 drives the two grippers 603 to separate and unfold, ensuring that the molded product falls smoothly and safely to the conveyor 11 or other designated positions, effectively improving the integrity of product production and the reliability of equipment operation.

[0060] See instruction manual attached Figure 3 and Figure 6As shown, the pressure detection structure 8 includes a cylindrical detection sleeve 801. A flange 802 protrudes from the outer side of the detection sleeve 801 and is bolted to the upper pressure plate 201. The detection sleeve 801 is hollow inside with an opening at its lower end. A pressure sensor 804 is mounted on the top inner side of the detection sleeve 801. A detection contact 805 is slidably mounted at the lower opening of the detection sleeve 801. A spring 803 connects the detection contact 805 and the pressure sensor 804. The output of the pressure sensor 804 is electrically connected to the input of the first electric telescopic rod 605. In practical applications, the coordinated operation of the detection sleeve 801, flange 802, pressure sensor 804, detection contact 805, and spring 803 constitutes a precise pressure detection system. During the docking of the upper and lower molds, the detection contact 805 contacts and is pressurized against the lower mold structure 3. The spring 803 transmits the pressure to the pressure sensor 804, which converts the pressure signal into an electrical signal output. The digital display control panel 10 or other control systems can determine whether the upper and lower molds are correctly aligned and whether the alignment pressure is appropriate based on the signals from the pressure sensor.

[0061] Working principle:

[0062] In use, the hydraulic cylinder 902 drives the slider 903 to move up and down within the lifting slide 901, thereby raising and lowering the lower mold structure 3 to achieve mold closing and opening with the upper mold structure 2. When one of the lower mold platforms 301 of the lower mold structure 3 is engaged with the upper mold structure 2, the detection contact 805 in the pressure detection structure 8 contacts the lower mold structure 3, causing the spring 803 to be compressed. The pressure sensor 804 detects the pressure and sends a feedback signal to control related actions, ensuring good alignment between the upper and lower molds.

[0063] Material is fed into the injection molding machine 4 through the feeding pipe 402. After the injection molding machine 4 melts the plastic, it is injected into the central hole 303 through the injection pipe 401 and the connecting pipe 202. The central hole 303 is then guided into each mold cavity 305 through the connecting channel 304 for molding. The hanging rod 103 of the upper mold structure 2 is connected to the fixed frame 102 to stabilize its position.

[0064] The lifting drive assembly 9 first drives the lower mold structure 3 to move downward, realizing the opening of the lower mold structure 3 and the upper mold structure 2. The cylinder 703 in the locking structure 7 pushes the locking plate 702 to lock the molded product in the mold cavity 305 to prevent the product from moving before demolding. The motor 5 in the rotation drive structure drives the support shaft 904 to rotate via the reducer 501, causing the lower mold structure 3 to rotate 180 degrees up and down around the support shaft 904, which facilitates demolding and other operations. During the above process, after the lower mold structure 3 rotates 180 degrees, the lifting drive assembly 9 drives the lower mold structure 3 to move upward again, realizing the closing of the other lower mold platform 301 and the upper mold structure 2. During this process, injection molding and cooling operations are performed simultaneously.

[0065] The heat dissipation ribs 306 and cooling fan 14 within the ventilation gap dissipate heat and cool the molded product inside the mold cavity 305, thereby ensuring that the product molded inside the mold cavity 305 is fully cooled and molded. The second electric telescopic rod 12 drives the pusher column 13 to slide in the pusher channel, pushing the molded product located below out of the mold cavity 305 for demolding.

[0066] In the unloading assembly 6, the first electric telescopic rod 605 drives the eccentric rod 607 to rotate the claw plate 602 around the hinge seat 604, and the gripper 603 realizes the slow descent of the falling formed product, so that it lands smoothly on the conveyor 11 for transmission. The entire process is controlled and coordinated by the digital display control panel 10 for each electric, hydraulic and pneumatic component.

[0067] The above description is merely a specific embodiment of the present invention, but the scope of protection of the present invention is not limited thereto. Any variations or substitutions that can be easily conceived by those skilled in the art within the technical scope disclosed in the present invention should be included within the scope of protection of the present invention. Therefore, the scope of protection of the present invention should be determined by the scope of the claims.

Claims

1. A rapid prototyping device for thin-walled multi-cavity molds, characterized in that: Includes a base (1) and a digital display control panel (10). The base (1) is provided with two or more support rods (101). Between the support rods (101), from top to bottom, there are an injection molding machine (4) for injection molding towards the mold, an upper mold structure (2), a lower mold structure (3), and a conveyor (11) for transporting and moving the molded product. The lower mold structure (3) includes two lower mold platforms (301) arranged opposite each other, with a ventilation gap between the two lower mold platforms (301), and several mold cavities (305) are opened on the opposite side of the two lower mold platforms (301). The support pole (101) is provided with a lifting drive assembly (9) for lifting and lowering the lower mold structure (3), and the lifting drive assembly (9) is provided with a rotation drive structure for flipping the lower mold structure (3). The upper mold structure (2) is provided with a pressure detection structure (8) for detecting docking and cooperation with the lower mold structure (3).

2. The rapid prototyping equipment for thin-walled multi-cavity molds according to claim 1, characterized in that: The upper side of the injection molding machine (4) is provided with a feeding pipe (402), the lower side of the injection molding machine (4) is provided with an injection pipe (401), and a fixing frame (102) is provided between the outer side of the injection molding machine (4) and the support column (101). The fixing frame (102) is fixedly connected to the support column (101) and the injection molding machine (4) by bolts. The fixing frame (102) is rectangular in shape.

3. The rapid prototyping equipment for thin-walled multi-cavity molds according to claim 1, characterized in that: The upper mold structure (2) includes an upper pressure plate (201). The lower side of the upper pressure plate (201) is provided with a plurality of mold cores (203) that mate with the mold cavity (305) one by one. The upper side of the upper pressure plate (201) is provided with a connecting pipe (202). The upper end of the connecting pipe (202) and the lower end of the injection tube (401) are connected to each other in a sealed manner. Two hangers (103) are symmetrically distributed on both sides of the connecting pipe (202) with the connecting pipe as the center. The lower ends of the two hangers (103) are fixedly set on the upper side of the upper pressure plate (201). The upper ends of the two hangers (103) are connected to the connecting holes opened at the corresponding positions of the fixed frame (102). The fixed frame (102) is threaded with a set bolt for fixing the hangers (103).

4. The rapid prototyping equipment for thin-walled multi-cavity molds according to claim 1, characterized in that: A number of heat dissipation ribs (306) are evenly distributed at the location of the mold cavity (305) located in the ventilation gap. The two lower mold platforms (301) are respectively provided with a central hole (303) on the opposite side. The mold cavities (305) are evenly distributed with the central hole (303) as the center. A connecting channel (304) is provided between the central hole (303) and each mold cavity (305). A conical hole (307) is formed at the connection between the connecting channel (304) and the mold cavity (305). The tip of the conical hole (307) faces the mold cavity (305) and is connected to each other. A cooling fan (14) is provided in the ventilation gap. The output end of the digital display control panel (10) is electrically connected to the input end of the cooling fan (14).

5. The rapid prototyping equipment for thin-walled multi-cavity molds according to claim 4, characterized in that: Two second electric telescopic rods (12) are provided in the ventilation gap between the two central holes (303). The push rod ends of the two second electric telescopic rods (12) are arranged opposite each other and are respectively fixedly connected to push columns (13). A push channel for sliding through the push column (13) is opened between the central hole (303) and the ventilation gap. When the push rod of the second electric telescopic rod (12) reaches the minimum stroke, the end of the push column (13) is flush with the inner end face of the central hole (303). The output end of the digital display control panel (10) is electrically connected to the input end of the second electric telescopic rod (12).

6. The rapid prototyping equipment for thin-walled multi-cavity molds according to claim 1, characterized in that: The lifting drive assembly (9) includes a lifting slide (901) opened on the support column (101). A slider (903) is slidably arranged in the lifting slide (901) along the vertical direction. A hydraulic cylinder (902) for driving the slider (903) to move up and down is fixedly arranged in the lifting slide (901). A connecting platform (302) is fixedly connected between the two sides of the two lower mold platforms (301). The connecting platform (302) is rotatably connected to the slider (903) through a support shaft (904). The rotation drive structure is fixed on one of the sliders (903). The output end of the digital display control panel (10) is electrically connected to the input end of the hydraulic cylinder (902).

7. The rapid prototyping equipment for thin-walled multi-cavity molds according to claim 6, characterized in that: The rotary drive structure includes a motor (5), the output shaft of which is connected to the support shaft (904) via a reducer (501), the reducer (501) is fixedly mounted on the slider (903), and the output end of the digital display control panel (10) is electrically connected to the input end of the motor (5).

8. The rapid prototyping equipment for thin-walled multi-cavity molds according to claim 6, characterized in that: Each of the connecting platforms (302) is provided with a locking structure (7) on its upper and lower sides for locking the molded product in the mold cavity (305). The locking structure (7) includes a fixed seat (701) fixedly installed on the connecting platform (302), and a cylinder (703) fixedly installed on the fixed seat (701). The push rod head of the cylinder (703) is fixedly connected to the locking plate (702). The output end of the digital display control panel (10) is electrically connected to the input end of the cylinder (703).

9. The rapid prototyping equipment for thin-walled multi-cavity molds according to claim 1, characterized in that: The outer side of the lower mold structure (3) is provided with a feeding assembly (6) for slowing down the falling of the molded product. The feeding assembly (6) includes a support ring (606), which is fixedly mounted on the support rod (101). Two side baffles (601) are fixedly mounted on the support ring (606) by bolts. Each side baffle (601) has a claw plate (602) hinged to its outer side by a hinge seat (604). A gripper (603) is provided on the lower side of the plate (602). The grippers (603) of the two unloading components (6) are arranged from wide to narrow from top to bottom. One end of an eccentric rod (607) is fixedly connected to the gripper plate (602). The other end of the eccentric rod (607) is hinged to the side baffle (601) and a first electric telescopic rod (605) is provided. The output end of the digital display control panel (10) is electrically connected to the input end of the first electric telescopic rod (605).

10. The rapid prototyping equipment for thin-walled multi-cavity molds according to claim 9, characterized in that: The pressure detection structure (8) includes a detection sleeve (801) in the shape of a cylinder. A side plate (802) is provided on the outer side of the detection sleeve (801). The side plate (802) is fixed on the upper pressure plate (201) by bolts. The detection sleeve (801) is hollow inside and open at the lower end. A pressure sensor (804) is provided on the top side of the inner side of the detection sleeve (801). A detection contact (805) is slidably provided at the lower opening of the detection sleeve (801). A spring (803) connects the detection contact (805) and the pressure sensor (804) to each other. The output end of the pressure sensor (804) is electrically connected to the input end of the first electric telescopic rod (605).

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