A hot press injection molding integrated mold

Abstract

This invention relates to the field of injection molding technology, specifically to a thermoforming injection molding unibody mold, comprising an injection processing table, an annular disk, a lower mold, a mounting frame, an outer annular sphere, and an inner annular sphere, the inner annular sphere having a solution tank extending vertically. This thermoforming injection molding unibody mold of the invention utilizes an annular disk designed with four functional areas: a feeding area, a hot pressing area, an injection area, and a material unloading area, corresponding to four lower molds. A drive source rotates the annular disk, enabling the lower molds to circulate between the four areas (feeding → hot pressing → injection → unloading → refeeding). Each process can be performed in parallel (e.g., feeding simultaneously during hot pressing, hot pressing simultaneously during injection, etc.), avoiding waiting for single processes, significantly improving overall work efficiency, and achieving continuous and automated production.

Description

Technical Field

[0001] This invention relates to the field of injection molding technology, and more specifically to a thermoforming injection mold. Background Technology

[0002] Automobiles contain a large number of parts, some of which are made of metal, including engines and transmissions, while others are made of plastic, including dashboards and center consoles. Components made of plastic are usually manufactured using injection molding. Due to their advantages such as light weight, corrosion resistance, and ease of processing, plastics are widely used in the automotive industry, and plastic parts have become an important part of automobiles.

[0003] The production of plastic parts is a highly precise process that follows specific technological principles. It mainly relies on two core elements: injection molding machines and molds. As the power source and control center of the entire production process, the injection molding machine works based on the physical properties of thermoplastic or thermosetting plastics. During processing, plastic raw materials are first fed into the hopper of the injection molding machine in granular form. These raw materials then enter the heating barrel, which is equipped with a high-efficiency heating device that can gradually and precisely heat the raw materials, causing them to gradually melt into a viscous melt with good fluidity. At the same time, the screw of the injection molding machine begins to rotate and move forward under the drive of the hydraulic system. This action not only plays a role in stirring and uniformly plasticizing the raw materials, but also generates strong pressure, injecting the molten plastic through the nozzle of the injection molding machine into the mold cavity connected to it at high pressure and high speed.

[0004] There are many types of injection molding machines, including vertical injection molding machines. Vertical injection molding machines have significant advantages in specific processing scenarios due to their unique structural design. The most significant feature of vertical injection molding machines is that the axes of the clamping device and the injection device are vertically distributed. The mold is usually installed on the fixed platen below, and the moving platen above moves up and down under the drive of the clamping mechanism to complete the clamping action. Then, the injection molding machine moves down through the lifting source to perform the injection work. After the injection work is completed, the injection molding machine moves up to return to the initial position.

[0005] However, nozzle dripping is a common problem during the upward movement of the injection molding machine. After the holding pressure is completed, a certain amount of molten plastic remains inside the nozzle under pressure. During the holding pressure stage, the injection molding machine continuously applies pressure to the mold cavity to compensate for the cooling and shrinkage of the plastic part. At this time, the nozzle and the main runner of the mold are in close contact, and the molten plastic fills the internal channels of the nozzle and the gating system under pressure. When the holding pressure ends and the mold opening stage begins, the moving platen of the vertical injection molding machine drives the injection unit to move upward. The close contact between the nozzle and the main runner of the mold is broken. The molten plastic inside the nozzle, which was originally under high pressure, loses the constraint of the mold, and the pressure is released rapidly in an instant. At this time, the molten plastic inside the nozzle still maintains a certain degree of fluidity, and the residual pressure and... Under the combined effect of gravity, the incompletely solidified melt will drip down the nozzle onto the mold surface and near the mold gate. When the dripping melt falls near the mold gate, the impact is more direct and serious. As the key channel for the melt to enter the cavity, the dimensional accuracy and surface smoothness of the gate are crucial to the melt flow and the molding quality of the plastic part. After the dripping melt solidifies near the gate, it will block or narrow the gate channel, resulting in increased melt flow resistance during subsequent injection, which will prevent the mold cavity from being filled smoothly, resulting in defects such as short shot and short injection. If the solidified waste at the gate is not cleaned up, it may also be carried into the cavity during melt injection, combining with the new melt to form weld lines or impurities, which will seriously affect the strength and appearance of the plastic part. Summary of the Invention

[0006] In order to overcome the defects of the prior art, the present invention provides a hot-press injection molding die to solve the problem that the dripping melt solidifies near the gate, which will block or narrow the gate channel, resulting in increased melt flow resistance during subsequent injection, making it unable to fill the cavity smoothly, and causing defects such as material shortage and short shot.

[0007] To achieve the above objectives, the technical solution adopted by the present invention is as follows: A thermoforming injection molding die includes an injection processing table with an injection assembly. The injection assembly includes an injection molding machine mounted on the injection processing table and an annular disk. The surface of the annular disk has a feeding area, a hot pressing area, an injection area, and a material removal area. Material can be removed from the material removal area by passing through the feeding area, the hot pressing area, the injection area, and the material removal area. The annular disk has four lower molds arranged in a ring at equal intervals. The four lower molds correspond to the four areas on the surface of the annular disk. The lower mold in the feeding area rotates to the hot pressing area for hot pressing, rotates to the injection area for injection, and rotates to the material removal area for removal. The injection molding machine is equipped with a mounting bracket, on which are a first horizontal plate and a second horizontal plate. Between the two first horizontal plates is an outer annular ball. The outer annular ball has a first through hole that runs vertically through it. Inside the outer annular ball is an inner annular ball. The outer wall of the inner annular ball fits against the inner wall of the outer annular ball. When the inner annular ball rotates, it can control the injection state of the injection nozzle of the injection molding machine. The inner annular ball has a solution tank that runs vertically through it. The glue sprayed by the injection molding machine can flow into the mold in the injection area through the solution tank for injection molding.

[0008] Preferably, a lifting plate is installed inside the frame of the injection molding processing table. A hot pressing upper mold for hot pressing and an injection molding upper mold for injection molding are installed at the bottom of the lifting plate. The hot pressing upper mold corresponds to the lower mold of the hot pressing area, and the injection molding upper mold corresponds to the lower mold of the injection area. A cylinder is installed on the injection molding processing table, and the output end of the cylinder is connected to the top of the lifting plate.

[0009] Preferably, the inner annular sphere has two symmetrically fixed limiting shafts on its surface, which are used to drive the inner annular sphere to rotate inside the outer annular sphere. The surface of the outer annular sphere is provided with limiting holes that are adapted to the limiting shafts, and the limiting holes are connected to the inner cavity of the outer annular sphere. The outer wall of the limiting shaft is rotatably connected to the inner wall of the limiting hole, and a rotating disk is fixed at one end of the limiting shaft that extends out of the limiting hole.

[0010] Preferably, the mounting bracket is equipped with a drive assembly, which includes a linkage shaft disposed on a rotating disk. The rotating disk has a first receiving hole adapted to the linkage shaft, and the linkage shaft is slidably connected inside the first receiving hole. The linkage shaft can slide along the axis of the first receiving hole.

[0011] Preferably, a first connecting frame is installed on the mounting bracket, and the first connecting frame is inverted U-shaped. A first limiting member is installed on the first connecting frame, and the first limiting member is T-shaped. A sliding hole adapted to the first limiting member is opened on the first connecting bracket, and the first limiting member is slidably connected inside the sliding hole. A second return spring is fixed between the stepped surface of the first limiting member and the first connecting bracket.

[0012] Preferably, a first lifting shaft is fixed to the inner wall of the first connecting frame, a second receiving hole adapted to the first lifting shaft is provided on the second horizontal plate, and the first lifting shaft is slidably connected inside the second receiving hole, and the first lifting shaft can slide up and down along the axis of the second receiving hole to limit the first lifting shaft. A second lifting shaft is fixed to the bottom of the first connecting frame, a third receiving hole adapted to the second lifting shaft is provided on the mounting frame, a base plate is provided on the lower side of the mounting frame, and the bottom of the second lifting shaft is fixed to the top of the base plate. A third return spring is fixed between the bottom of the mounting frame and the top of the base plate.

[0013] Preferably, the mounting bracket is equipped with a pressure relief assembly, which includes a fourth return spring fixed between the rotating disk and the outer annular ball. A second connecting bracket is fixed to one side of the second horizontal plate. A linkage block is installed on the second connecting bracket, and the side of the linkage block facing the rotating disk has an arc-shaped surface. A second limiting member is fixed to the side of the linkage block facing the second connecting bracket. The second limiting member is T-shaped. A positioning hole adapted to the second limiting member is opened on the second connecting bracket, and the second limiting member is slidably connected inside the positioning hole. A fifth return spring is fixed between the stepped surface of the second limiting member and the second connecting bracket.

[0014] Preferably, the inner annular sphere has a through-type exhaust groove, which consists of a first exhaust channel and a second exhaust channel. The first exhaust channel is located at the bottom of the inner annular sphere, and there are four second exhaust channels arranged in a ring inside the inner annular sphere. The bottom ends of the four second exhaust channels are all connected to the first exhaust channels, and the top ends of the four second exhaust channels are all located at the top end of the inner annular sphere. The first exhaust channel and the second exhaust channel form a through-type structure. The outer wall of the outer annular sphere has four equidistant ventilation holes. A filter screen is fixed at the top end of the first exhaust channel to prevent dirt in the air from entering the interior of the first exhaust channel.

[0015] Preferably, an outer disk is fixed to the surface of the linkage shaft, and a first return spring is fixed between the side of the outer disk facing the rotating disk and the rotating disk to support the linkage shaft.

[0016] Preferably, both the upper and lower first connecting holes have spherical surfaces, and a corner is formed between the inner wall of the first connecting hole and the spherical surface.

[0017] The beneficial effects of this invention are as follows: 1. The ring disc design includes four functional areas: a feeding area, a hot pressing area, an injection molding area, and a material unloading area, corresponding to four lower molds. The ring disc is driven by a drive source to rotate, enabling the lower molds to cycle between the four areas (feeding → hot pressing → injection molding → unloading → refeeding). Each process can be performed in parallel (e.g., feeding is performed simultaneously during hot pressing, and hot pressing is performed simultaneously during injection molding), avoiding waiting for single processes, significantly improving overall work efficiency, and realizing continuous and automated production.

[0018] 2. The sealing assembly utilizes the cooperation between the outer and inner annular balls to achieve the "opening and closing switching" of the solution tank by rotating the inner annular ball: During injection molding, the solution tank is open, and the adhesive flows normally; when the injection molding machine moves upward, the inner annular ball rotates rapidly to close the solution tank. At the same time, the surface of the inner annular ball seals the injection molding machine nozzle, completely blocking the path of adhesive dripping, reducing adhesive waste, preventing dripping adhesive from contaminating the mold, processing table, or molded parts, reducing cleaning costs, and ensuring product appearance and quality.

[0019] 3. The venting groove and the vent hole in the pressure relief component work together to open synchronously when the solution tank is closed: outside air enters the filling port of the upper injection mold through the vent hole and the venting groove, balances the pressure, and prevents residual glue from overflowing at the filling port due to negative pressure when the injection molding machine moves up. This stabilizes the injection environment, reduces product defects caused by abnormal pressure, and improves molding quality.

[0020] 4. A filter screen is installed through the venting groove of the inner annular ball to prevent impurities in the air from entering the adhesive flow path, avoid mold blockage or product contamination, and extend the service life of the equipment. Attached Figure Description

[0021] Figure 1 This is a schematic diagram of the structure of the present invention.

[0022] Figure 2 This is a schematic diagram of the injection molding component of the present invention.

[0023] Figure 3 This is a schematic diagram of the structure of the annular disk of the present invention.

[0024] Figure 4 This is a schematic diagram of the second three-dimensional cross-section of the connecting frame of the present invention.

[0025] Figure 5 This is a schematic diagram of the sealing assembly of the present invention.

[0026] Figure 6 This is a schematic diagram of the structure of the driving component of the present invention.

[0027] Figure 7 This is a schematic diagram of the pressure relief component of the present invention.

[0028] Figure 8 This is a schematic diagram of the first three-dimensional cross-section of the outer annular sphere of the present invention.

[0029] Figure 9 This is a schematic diagram of the second three-dimensional cross-section of the inner annular sphere of the present invention.

[0030] In the picture: 10. Injection molding processing table; 20. Injection molding component; 21. Injection molding machine; 22. Annular disc; 23. Lower mold; 24. Drive source; 25. Lifting platen; 26. Cylinder; 27. Hot press upper mold; 28. Injection upper mold; 30. Sealing assembly; 31. Mounting bracket; 3010. First horizontal plate; 3011. Second horizontal plate; 32. Outer annular ball; 33. First connecting hole; 34. Inner annular ball; 35. Solution tank; 36. Limiting shaft; 37. Limiting hole; 38. Rotary disk; 40. Drive assembly; 41. Linkage shaft; 42. First receiving hole; 43. Outer plate; 44. First return spring; 45. First connecting frame; 46. First limiting member; 47. Second return spring; 48. First lifting shaft; 49. Second receiving hole; 410. Second lifting shaft; 411. Third receiving hole; 412. Base plate; 413. Third lifting shaft; 414. Third return spring; 50. Pressure relief assembly; 51. Fourth return spring; 52. Exhaust groove; 53. Vent hole; 54. Filter screen; 55. Second connecting frame; 56. Linkage block; 57. Second limiting component; 58. Fifth return spring. Detailed Implementation

[0031] The following will refer to the attached reference. Figures 1 to 9 The various embodiments of the present invention will be described in detail below. Those skilled in the art should understand that these embodiments are merely illustrative of the technical principles of the present invention and are not intended to limit the scope of protection of the present invention.

[0032] Example 1 like Figures 1 to 9 As shown, a thermoforming injection molding die of the present invention includes an injection processing table 10. The surface of the injection processing table 10 has a working area, and an injection molding component 20 is installed in the working area for performing injection molding to complete the injection molding work.

[0033] Injection assembly 20 includes an injection molding machine 21 mounted on injection processing table 10. The injection molding machine 21 is a vertical injection molding machine, and vertical injection molding machines are existing technology and will not be described further.

[0034] An annular disk 22 is mounted on the surface of the injection molding component 20. The surface of the annular disk 22 has four areas, namely a feeding area, a hot pressing area, an injection area, and a material unloading area. Four lower molds 23 are mounted on the top of the annular disk 22 at equal intervals and arranged in a ring on the annular disk 22.

[0035] It should be noted that the four lower molds 23 correspond to the loading area, hot pressing area, injection molding area, and unloading area on the annular disk 22, respectively. Each of the loading area, hot pressing area, injection molding area, and unloading area corresponds to one lower mold 23. The raw material passes from the loading area through the hot pressing area and the injection molding area to the unloading area. After being heated, the material is first picked up by a robotic arm and placed on the lower mold 23 located in the loading area. The material on the lower mold 23 located in the hot pressing area is subjected to hot pressing. The material on the lower mold 23 located in the injection molding area is subjected to injection molding by the injection molding machine 21. The lower mold 23 located in the unloading area contains the parts that have been injection molded.

[0036] A drive source 24 is installed on the inner side of the injection molding table 10, and the output end of the drive source 24 is connected to the bottom of the annular disk 22.

[0037] It should be noted that when the output of the drive source 24 drives the annular disk 22 to rotate, the four lower molds 23 on the annular disk 22 can sequentially change positions. The lower mold 23 in the loading area is switched to the hot pressing area for hot pressing, the lower mold 23 in the hot pressing area is switched to the injection molding area for injection molding, the lower mold 23 in the injection molding area is switched to the material picking area for material picking, and the lower mold 23 in the material picking area is switched to the loading area and then unloaded by the robot arm. This alternating operation can improve work efficiency.

[0038] A lifting plate 25 is installed inside the frame of the injection molding table 10. A hot pressing upper mold 27 for hot pressing and an injection molding upper mold 28 for injection molding are installed at the bottom of the lifting plate 25. The hot pressing upper mold 27 corresponds to the lower mold 23 of the hot pressing area, and the injection molding upper mold 28 corresponds to the lower mold 23 of the injection area. A cylinder 26 is installed on the injection molding table 10, and the output end of the cylinder 26 is connected to the top of the lifting plate 25.

[0039] It should be noted that when the piston rod end of the cylinder 26 drives the lifting plate 25 to move down, the hot pressing upper mold 27 and the injection molding upper mold 28 can move down synchronously to work.

[0040] During hot-press injection molding, the material is first heated by a heating device. This heating ensures that the material deforms after passing through the upper mold 27 and the corresponding lower mold 23. The heated material is then gripped by a robotic arm and transferred to the surface of the lower mold 23 in the loading area. At this time, the output of the drive source 24 drives the connected annular disk 22 to rotate (the direction of rotation of the annular disk 22 corresponds to the previously described process where "the raw material passes sequentially from the loading area through the hot-pressing area, the injection area, and the unloading area"). The rotation direction allows the lower mold 23 to cycle around the loading area, hot pressing area, injection molding area, and unloading area. At this time, the lower mold 23 in the loading area rotates to the hot pressing area, the lower mold 23 in the hot pressing area rotates to the injection molding area, the lower mold 23 in the injection molding area rotates to the unloading area, and the lower mold 23 in the unloading area rotates to the loading area. Meanwhile, the piston rod of the cylinder 26 drives the connected lifting plate 25 to move down, the hot pressing upper mold 27 and the lower mold 23 below it close together, and the injection molding upper mold 28 and the lower mold 23 below it close together.

[0041] Since the injection molding machine 21 is also connected to a lifting source, the lifting source can drive the injection molding machine 21 to move down. At this time, the nozzle of the injection molding machine 21 is connected to the glue filling port of the upper injection mold 28. Then, the glue inside the injection molding machine 21 flows into the upper injection mold 28 and the corresponding lower mold 23 to complete the injection. After the injection is completed, the lifting source drives the connected injection molding machine 21 to move up. Then, the cylinder 26 drives the lifting plate 25 to move up. Then, the drive source 24 drives the annular disk 22 to rotate. At this time, the lower mold 23 of the injection area rotates to the material picking area, and the injection molded part is taken out at the material picking area. Alternatively, a mechanical claw can be set up to pick up the part.

[0042] Example 2 The injection molding machine 21 is equipped with a sealing component 30, which can prevent the glue from falling off when the injection molding machine 21 moves upward after the injection is completed.

[0043] The sealing assembly 30 includes a mounting bracket 31 installed on the injection end surface of the injection molding machine 21. The mounting bracket 31 is through on all four sides. Two symmetrical first horizontal plates 3010 are fixed on both sides of the mounting bracket 31, and two symmetrical second horizontal plates 3011 are fixed on the other two sides of the mounting bracket 31. An outer annular ball 32 is installed between the two first horizontal plates 3010. The outer annular ball 32 has an inner cavity, and the inner cavity is spherical. A first connecting hole 33 that runs vertically through the outer annular ball 32 is provided on the outer annular ball 32.

[0044] It should be noted that both the upper and lower first connecting holes 33 have spherical surfaces, and the inner wall of the first connecting hole 33 forms a corner with the spherical surface.

[0045] An inner annular ball 34 is provided inside the outer annular ball 32. The outer wall of the inner annular ball 34 is attached to the inner cavity wall of the outer annular ball 32. A solution tank 35 with vertical penetration is provided on the inner annular ball 34 to contain the adhesive liquid.

[0046] It is important to note that the solution tank 35 has two states: open and closed. When the inner annular ball 34, which is in the initial position, rotates, the solution tank 35 can be changed from the open state to the closed state, thereby preventing the glue from dripping when the injection molding machine 21 moves upward. When the inner annular ball 34 rotates back to the initial position, the solution tank 35 can be changed from the closed state to the open state, thereby allowing the glue to flow normally inside. Furthermore, the glue spraying end of the injection molding machine 21 nozzle is pressed against the surface of the inner annular ball 34. When the solution tank 35 is in the closed state, the surface of the inner annular ball 34 blocks the injection molding machine 21 nozzle, meaning that the injection molding machine 21 nozzle can slide against the surface of the inner annular ball 34. When the solution tank 35 is in the open state, the injection molding machine 21 nozzle can spray glue into the interior of the solution tank 35.

[0047] Two limiting shafts 36 are symmetrically fixed on the surface of the inner annular ball 34, which are used to drive the inner annular ball 34 to rotate inside the outer annular ball 32, thereby controlling the opening and closing state of the solution tank 35. The surface of the outer annular ball 32 is provided with limiting holes 37 that are adapted to the limiting shafts 36, and the limiting holes 37 are connected to the inner cavity of the outer annular ball 32. The outer wall of the limiting shaft 36 is rotatably connected to the inner wall of the limiting hole 37. A rotating disk 38 is fixed at one end of the limiting shaft 36 that extends out of the limiting hole 37.

[0048] The mounting bracket 31 is equipped with a drive assembly 40, which drives the inner annular ball 34 to rotate via the rotating disk 38 and the limiting shaft 36, thereby controlling the opening and closing state of the solution tank 35.

[0049] The drive assembly 40 includes a linkage shaft 41 disposed on a rotating disk 38. The rotating disk 38 has a first receiving hole 42 adapted to the linkage shaft 41, and the linkage shaft 41 is slidably connected inside the first receiving hole 42. The linkage shaft 41 can slide along the axis of the first receiving hole 42.

[0050] An outer disk 43 is fixed to the surface of the linkage shaft 41. A first return spring 44 is fixed between the side of the outer disk 43 facing the rotating disk 38 and the rotating disk 38. This spring is used to support the linkage shaft 41 and can drive the linkage shaft 41, which has been released from its restraint, to return to its original position.

[0051] A first connecting bracket 45 is installed on the mounting bracket 31. The first connecting bracket 45 is inverted U-shaped. A first limiting member 46 is installed on the first connecting bracket 45. The first limiting member 46 is T-shaped. A sliding hole adapted to the first limiting member 46 is opened on the first connecting bracket 45. The first limiting member 46 is slidably connected inside the sliding hole. A second return spring 47 is fixed between the stepped surface of the first limiting member 46 and the first connecting bracket 45 to support the first limiting member 46, thereby facilitating the reset of the first limiting member 46 that has been released from restriction.

[0052] The inner wall of the first connecting frame 45 is fixed with a first lifting shaft 48. The second horizontal plate 3011 is provided with a second receiving hole 49 that is adapted to the first lifting shaft 48. The first lifting shaft 48 is slidably connected inside the second receiving hole 49. The first lifting shaft 48 can slide up and down along the axis of the second receiving hole 49 to limit the first lifting shaft 48, thereby maintaining the stability of the first connecting frame 45 when it slides up and down.

[0053] The bottom of the first connecting frame 45 is fixed with a second lifting shaft 410. The mounting frame 31 is provided with a third receiving hole 411 that is adapted to the second lifting shaft 410. The second lifting shaft 410 is slidably connected inside the third receiving hole 411 and can slide up and down along the axial direction of the third receiving hole 411.

[0054] A base plate 412 is provided on the lower side of the mounting bracket 31, and the bottom of the second lifting shaft 410 is fixed to the top of the base plate 412. Multiple third lifting shafts 413 arranged at equal intervals are fixed to the top of the base plate 412. A third return spring 414 is fixed between the bottom of the mounting bracket 31 and the top of the base plate 412.

[0055] The mounting bracket 31 is equipped with a pressure relief component 50, which can control the reset speed of the inner annular ball 34 and also prevent negative pressure from being generated when the outer annular ball 32 moves upward.

[0056] The pressure relief assembly 50 includes a fourth return spring 51 fixed between the rotating disk 38 and the outer annular ball 32.

[0057] It should be noted that the fourth reset spring 51 can store energy. That is, when the rotating disk 38 rotates, it will twist the fourth reset spring 51. When the injection molding machine 21 moves upward, the fourth reset spring 51, which is freed from its restraint, can drive the rotating disk 38 to rotate quickly to reset, thereby controlling the solution tank 35 to change from the open state to the closed state and preventing the glue from dripping.

[0058] An exhaust groove 52 in a through shape is provided on the inner annular sphere 34. The exhaust groove 52 is composed of a first exhaust channel and a second exhaust channel. The first exhaust channel is located at the bottom end of the inner annular sphere 34. There are four second exhaust channels, and the four second exhaust channels are arranged in a ring inside the inner annular sphere 34. The bottom ends of the four second exhaust channels are connected to the first exhaust channels, and the top ends of the four second exhaust channels are located at the top end of the inner annular sphere 34. The first exhaust channel and the second exhaust channel form a through shape. Four vent holes 53 are arranged at equal intervals on the outer wall of the outer annular sphere 32.

[0059] It should be noted that the venting groove 52 also has two states: open and closed. When the injection molding machine 21 moves upward, the inner annular ball 34 rotates. When the solution tank 35 is in a sealed state, the solution tank 35 is in an open state, so that the solution tank 35 is in a sealed state when the glue is injected. When the solution tank 35 changes from the open state to the closed state, the venting groove 52 changes from the closed state to the open state. The air from the outside can pass through the vent hole 53 through the venting groove 52 and flow to the first connecting hole 33 at the bottom of the outer annular ball 32 to be discharged, so that air is filled into the glue filling port of the upper injection mold 28, and negative pressure is avoided when the outer annular ball 32 moves upward.

[0060] A filter screen 54 is fixed at the top of the first exhaust duct to prevent dirt in the air from entering the interior of the first exhaust duct. A second connecting frame 55 is fixed on one side of the second horizontal plate 3011. A linkage block 56 is installed on the second connecting frame 55, and the side of the linkage block 56 facing the rotating disk 38 has an arc-shaped surface. A second limiting member 57 is fixed on the side of the linkage block 56 facing the second connecting frame 55. The second limiting member 57 is T-shaped. A positioning hole adapted to the second limiting member 57 is opened on the second connecting frame 55, and the second limiting member 57 is slidably connected inside the positioning hole. A fifth return spring 58 is fixed between the stepped surface of the second limiting member 57 and the second connecting frame 55.

[0061] Since the surface of the moving template in the prior art is flat and the glue inlet of the moving template is spherical, and the upper injection mold 28 of this injection molding is the same as the moving template in the prior art, when the injection molding machine 21 moves down, the base plate 412 will first abut against the surface of the upper injection mold 28. At this time, the second lifting shaft 410 slides upward along its axis in the third receiving hole 411. The second lifting shaft 410 drives the first connecting frame 45 to slide upward. At this time, the first lifting shaft 48 also slides upward along its axis inside the second receiving hole 49. The first limiting member 46 of the first connecting frame 45 will push the linkage shaft 41 to slide. At this time, the linkage shaft 41 slides in an arc shape with the rotating disk 38 as the center. At this time, the linkage shaft 41 drives the inner annular ball 34 to rotate inside the outer annular ball 32 through the rotating disk 38 and the limiting shaft 36. The groove opening of the solution tank 35 rotates to the hole of the first connecting hole 33. At this time, the solution tank 35 is connected to the first connecting hole 33. At this time, the rotating disk 38 twists the connected fourth reset spring 51.

[0062] Because the end of the linkage shaft 41 facing the linkage block 56 has an arc-shaped surface, when the rotating disk 38 rotates, the arc-shaped surface of the linkage shaft 41 will abut against the arc-shaped surface of the linkage block 56. As the first connecting frame 45 moves upward, the first limiting member 46 continues to slide against the linkage shaft 41. The arc-shaped surface of the linkage shaft 41 will push the linkage block 56 to slide towards the second limiting member 57 and compress the fifth return spring 58. When the linkage shaft 41 passes the linkage block 56, the fifth return spring 58, which is released from its restraint, will cause the linkage block 56 to return to its original position. At this time, the end of the linkage shaft 41 with the arc-shaped surface is located inside the gap between the lower end of the linkage block 56 and the second connecting frame 55, and the linkage shaft 41 can no longer slide. As the first connecting frame 45 moves upward, the first limiting member 46 is restricted by the surface of the linkage shaft 41. The first limiting member 46 slides inside the sliding hole and stretches the second return spring 47 until the first limiting member 46 passes the linkage shaft 41. At this time, the upward movement of the first connecting frame 45 ends, and the bottom end of the outer annular ball 32 is attached to the glue filling port of the upper injection mold 28, and the first connecting hole 33 corresponds to the glue filling port. At this time, the injection molding machine 21 performs glue injection. The glue flows through the first connecting hole 33 at the top of the outer annular ball 32, the solution tank 35, and the first connecting hole 33 at the bottom of the outer annular ball 32 to the glue filling port of the upper injection mold 28 for injection molding.

[0063] After the injection molding process is complete, the injection molding machine 21 moves upward. At this time, the third return spring 414, which is in a compressed state, returns to its original position. The third return spring 414 causes the base plate 412 to move downward, and the base plate 412 also drives the first connecting frame 45 to move downward via the second lifting shaft 410. The first limiting member 46 of the first connecting frame 45 applies downward pressure to the linkage shaft 41. The linkage shaft 41 is then subjected to two forces: the first is the torsional force of the fourth return spring 51 during its return, and the second is the downward pressure applied by the first limiting member 46. When the linkage shaft 41 is subjected to the downward pressure applied by the first limiting member 46... After the force is applied, the end of the linkage shaft 41 with the arc-shaped surface will slide upward and push the linkage block 56. The linkage block 56 will disengage from the restriction of the linkage block 56. At this time, the fourth reset spring 51 will directly drive the rotating disk 38 to rotate and reset to the initial position, while the inner annular ball 34 will rotate. This rotation is not a slow rotation, but a rapid rotation to reset to the initial position. At this time, the solution tank 35 changes from the open state to the closed state. The glue of the injection molding machine 21 can no longer flow into the solution tank 35, and the inner annular ball 34 seals the nozzle of the injection molding machine 21 to prevent dirt from entering the nozzle.

[0064] As the inner annular ball 34 rotates, the first exhaust channel of the exhaust groove 52 is connected to the first connecting hole 33 at the bottom of the outer annular ball 32, while the top of the second exhaust channel is connected to the vent hole 53. The air outside the outer annular ball 32 flows to the filling port of the upper injection mold 28 through the vent hole 53 and the exhaust groove 52, thereby preventing the outer annular ball 32 from moving upward and causing the glue at the filling port to flow out. As the outer annular ball 32 moves upward, it will generate an upward thrust, which can accelerate the flow of air outside the outer annular ball 32 to the filling port through the exhaust groove 52. As the injection molding machine 21 continues to inject, the above steps will be repeated.

Claims

1. A hot-press injection molding integral mold, comprising an injection processing table (10), characterized in that: The injection processing table (10) is provided with an injection assembly (20). The injection assembly (20) includes an injection molding machine (21) and an annular disk (22) installed on the injection processing table (10). The surface of the annular disk (22) has a feeding area, a hot pressing area, an injection area and a material removal area. The material can be taken out through the feeding area, the hot pressing area, the injection area to the material removal area. The annular disk (22) is provided with four lower molds (23) arranged in a ring at equal distances. The four lower molds (23) correspond to the four areas on the surface of the annular disk (22). The lower mold (23) in the feeding area rotates to the hot pressing area for hot pressing, rotates to the injection area for injection, and rotates to the material removal area for removal. The injection molding machine (21) is provided with a mounting bracket (31), and the mounting bracket (31) is provided with a first horizontal plate (3010) and a second horizontal plate (3011). An outer annular ball (32) is provided between the two first horizontal plates (3010). A first connecting hole (33) is provided on the outer annular ball (32) in a vertically penetrating manner. An inner annular ball (34) is provided inside the outer annular ball (32). The outer wall of the inner annular ball (34) is attached to the inner wall of the outer annular ball (32). When the inner annular ball (34) rotates, it can control the injection state of the nozzle of the injection molding machine (21). A solution tank (35) is provided on the inner annular ball (34) in a vertically penetrating manner. The glue sprayed by the injection molding machine (21) can flow into the mold of the injection area through the solution tank (35) for injection molding.

2. The hot-press injection molding die according to claim 1, characterized in that, The inner side of the frame of the injection molding table (10) is equipped with a lifting plate (25). The bottom of the lifting plate (25) is equipped with a hot pressing upper mold (27) for hot pressing and an injection molding upper mold (28) for injection molding. The hot pressing upper mold (27) corresponds to the lower mold (23) of the hot pressing area, and the injection molding upper mold (28) corresponds to the lower mold (23) of the injection area. A cylinder (26) is installed on the injection molding table (10), and the output end of the cylinder (26) is connected to the top of the lifting plate (25).

3. The hot-press injection molding die according to claim 1, characterized in that, The inner annular ball (34) has two symmetrically fixed limiting shafts (36) on its surface, which are used to drive the inner annular ball (34) to rotate inside the outer annular ball (32). The surface of the outer annular ball (32) is provided with limiting holes (37) that are adapted to the limiting shafts (36), and the limiting holes (37) are connected to the inner cavity of the outer annular ball (32). The outer wall of the limiting shaft (36) is rotatably connected to the inner wall of the limiting hole (37). A rotating disk (38) is fixed at one end of the limiting shaft (36) that extends out of the limiting hole (37).

4. The hot-press injection molding die according to claim 3, characterized in that, The mounting bracket (31) is equipped with a drive assembly (40), which includes a linkage shaft (41) disposed on a rotating disk (38). The rotating disk (38) has a first receiving hole (42) adapted to the linkage shaft (41), and the linkage shaft (41) is slidably connected inside the first receiving hole (42). The linkage shaft (41) can slide along the axis of the first receiving hole (42).

5. The hot-press injection molding die according to claim 4, characterized in that, The mounting bracket (31) is equipped with a first connecting bracket (45), which is inverted U-shaped. A first limiting member (46) is installed on the first connecting bracket (45), which is T-shaped. A sliding hole adapted to the first limiting member (46) is opened on the first connecting bracket (45), and the first limiting member (46) is slidably connected inside the sliding hole. A second reset spring (47) is fixed between the stepped surface of the first limiting member (46) and the first connecting bracket (45).

6. The hot-press injection molding die according to claim 5, characterized in that, The inner wall of the first connecting frame (45) is fixed with a first lifting shaft (48). The second horizontal plate (3011) is provided with a second receiving hole (49) that is compatible with the first lifting shaft (48). The first lifting shaft (48) is slidably connected to the inside of the second receiving hole (49). The first lifting shaft (48) can slide up and down along the axis of the second receiving hole (49) to limit the first lifting shaft (48). The bottom of the first connecting frame (45) is fixed with a second lifting shaft (410). The mounting frame (31) is provided with a third receiving hole (411) that is compatible with the second lifting shaft (410). The bottom of the mounting frame (31) is provided with a base plate (412). The bottom of the second lifting shaft (410) is fixed to the top of the base plate (412). A third return spring (414) is fixed between the bottom of the mounting frame (31) and the top of the base plate (412).

7. The hot-press injection molding die according to claim 6, characterized in that, The mounting bracket (31) is equipped with a pressure relief assembly (50), which includes a fourth return spring (51) fixed between the rotating disk (38) and the outer annular ball (32). A second connecting bracket (55) is fixed on one side of the second horizontal plate (3011). A linkage block (56) is installed on the second connecting bracket (55), and the side of the linkage block (56) facing the rotating disk (38) has an arc-shaped surface. A second limiting member (57) is fixed on the side of the linkage block (56) facing the second connecting bracket (55). The second limiting member (57) is T-shaped. A positioning hole adapted to the second limiting member (57) is opened on the second connecting bracket (55), and the second limiting member (57) is slidably connected inside the positioning hole. A fifth return spring (58) is fixed between the stepped surface of the second limiting member (57) and the second connecting bracket (55).

8. The hot-press injection molding die according to claim 7, characterized in that, The inner annular sphere (34) is provided with a through exhaust groove (52). The exhaust groove (52) consists of a first exhaust channel and a second exhaust channel. The first exhaust channel is located at the bottom of the inner annular sphere (34). There are four second exhaust channels, and the four second exhaust channels are arranged in a ring inside the inner annular sphere (34). The bottom of the four second exhaust channels is connected to the first exhaust channel, and the top of the four second exhaust channels is located at the top of the inner annular sphere (34). The first exhaust channel and the second exhaust channel form a through shape. The outer wall of the outer annular sphere (32) is provided with four equidistant ventilation holes (53). The top of the first exhaust channel is fixed with a filter screen (54) to prevent dirt in the air from entering the interior of the first exhaust channel.

9. The hot-press injection molding die according to claim 4, characterized in that, An outer disk (43) is fixed to the surface of the linkage shaft (41). A first return spring (44) is fixed between the side of the outer disk (43) facing the rotating disk (38) and the rotating disk (38) to support the linkage shaft (41).

10. The hot-press injection molding die according to claim 1, characterized in that, Both of the first connecting holes (33) have spherical surfaces, and the inner wall of the first connecting hole (33) forms a corner with the spherical surface.

Images