A mold clamping drive mechanism and an injection molding machine having the mechanism

Abstract

The present invention discloses a mold clamping drive mechanism and an injection molding machine having the same, which relates to the technical field of injection molding machines and aims to solve the technical problem of high cost of automated cutting equipment. It includes a machine tool, a hydraulic transmission system arranged on the top of the machine tool, a mold clamping mechanism with a cooling system arranged at the output end of the hydraulic transmission system, a plastic shaping component and a gate removing component arranged inside the machine cover, and a material distributing component arranged on the top of the machine tool. The mold clamping drive mechanism of the present invention integrates the functions of plastic shaping and gate waste removal into the plastic shaping rod component; in the traditional production process, plastic shaping and waste removal often need to be operated separately, while the present invention, through ingenious design, enables the gate waste to be directly processed by the plastic shaping rod after plastic shaping is completed, reducing the conversion time between processes and greatly improving production efficiency; compared with traditional automated cutting equipment, the present invention only adds a small number of structures such as a gate removing component, and the cost increase is limited.

Description

Technical Field

[0001] The present invention relates to the technical field of injection molding machines, and more specifically, to a mold clamping drive mechanism and an injection molding machine having the mechanism. Background Art

[0002] When injecting small circular cylindrical injection products such as small pen tubes, small cosmetic packaging tubes, and small medicine bottles, in order to improve production efficiency, injection molding machines often adopt the method of multiple cavities in one mold to inject multiple products at one time; during this process, generally, multiple injection cavities are connected through a gate runner; this is because when injection molding, the molten plastic needs to be transported from the injection molding machine nozzle to each mold cavity through a channel; using a gate runner to connect multiple mold cavities can make the plastic melt fill each mold cavity more evenly and efficiently, ensuring that each product in the mold cavity can obtain sufficient raw materials, thereby ensuring the consistency of product quality; however, this injection method of connecting multiple mold cavities through a gate runner results in gate waste 71 between the injected products. As shown in the attached drawings Figure 14 shown, currently, there are mainly two methods for removing the gate waste 71. One is manual operation, where workers manually take out the injection products and use tools such as knives to remove the gate waste 71. However, this method has obvious drawbacks. Manual operation has low efficiency, and the product quality varies due to the proficiency and fatigue of the workers, making it difficult to meet the requirements of large-scale and high-quality production; the other is to use special equipment for removing the gate waste 71, such as some automated cutting equipment. Its principle is usually to grab the product by a robotic arm and use a high-precision cutting tool to precisely cut the gate waste according to a preset program. However, the cost investment of such equipment is relatively high. In view of this, we propose a mold clamping drive mechanism and an injection molding machine having the mechanism. Summary of the Invention

[0003] The purpose of the present invention is to provide a mold clamping drive mechanism and an injection molding machine having the mechanism to solve the technical problem of high cost of automated cutting equipment.

[0004] To solve the above technical problem, the present invention provides the following technical solution: A mold clamping drive mechanism based on an injection molding machine, including a machine tool, a hydraulic transmission system arranged on the top of the machine tool, a mold clamping mechanism with a cooling system arranged at the output end of the hydraulic transmission system, a plastic shaping component and a twisting and removing component arranged inside the machine cover, and a material distribution component arranged on the top of the machine tool;

[0005] The mold clamping mechanism includes an injection molding plate arranged above the machine tool, and at least four inserting cylinders fixedly connected in a square array on the right side of the injection molding plate; the plastic shaping component includes at least four plastic shaping rods, each of the plastic shaping rods is movably sleeved inside the inserting cylinder, and symmetrically arranged second waist-shaped holes are formed on the surface of each end of the plastic shaping rod; the plastic shaping rods are used for shaping cylindrical injection products and removing the gate waste on the products;

[0006] The twisting and removing assembly includes four push rods distributed diagonally in at least two groups. The pin on each push rod is movably sleeved inside one of the second waist-shaped holes, and the four push rods distributed diagonally in two groups intersect. One end of each two diagonally distributed push rods is fixedly connected with a first transmission gear, and the two diagonally distributed first transmission gears are meshed and connected; by the rotation of the first transmission gear, the diagonally distributed push rods are driven to rotate axially towards or away from each other, causing the ends of the four shaping rods to gather or expand, thereby squeezing or expanding the gate waste, and realizing the removal of the gate waste. The mold closing drive mechanism of the present invention integrates the functions of shaping and removing the gate waste into the shaping rod assembly; in the traditional production process, shaping and waste removal often need to be operated separately, while the present invention, through ingenious design, enables the gate waste to be directly processed by the shaping rod after shaping, reducing the conversion time between processes and greatly improving the production efficiency; compared with the traditional automatic cutting equipment, the present invention only adds a small amount of structures such as the twisting and removing assembly, and the cost increase is limited.

[0007] Preferably, a machine cover with a sliding door is arranged on the top of the machine tool, and a plurality of tie bars are fixedly connected to the inner wall of one side of the machine cover in a square array.

[0008] Preferably, the mold closing mechanism includes a fixed mold base plate, the fixed mold base plate is fixedly sleeved on the end surfaces of a plurality of tie bars, a movable mold base plate is slidably sleeved on the surfaces of the plurality of tie bars together, and an injection plate is slidably connected inside the movable mold base plate. A transmission plate is fixedly connected to the left side of the movable mold base plate, and the transmission plate is in transmission connection with a hydraulic transmission system. A fixed mold is fixedly connected to the side of the fixed mold base plate close to the movable mold base plate. A plurality of hole grooves are arranged in a square array on one side of the fixed mold. A movable mold is fixedly connected to the side of the movable mold base plate close to the fixed mold, and the opposite surfaces of the movable mold and the fixed mold are in movable contact. A plurality of shaping grooves are respectively arranged in a square array on the opposite sides of the movable mold and the fixed mold, and the insertion cylinder is inserted and adapted to the shaping grooves on the movable mold. Gate grooves are respectively arranged on the opposite sides of the movable mold and the fixed mold, and the shaping grooves are communicated with the gate grooves. A shear plate is fixedly connected to the inner wall of each gate groove in a symmetrical structure.

[0009] Preferably, a plurality of positioning rods are fixedly connected to one side of the injection plate in a square array, and the positioning rods pass through the movable mold and are inserted and adapted to the hole grooves. A transmission groove is arranged on the top of the injection plate. A plurality of limit pins are fixedly connected to the side of the injection plate close to the transmission plate, and the limit pins are movably sleeved in the holes on the transmission plate. A first spring is movably sleeved on the surface of each limit pin, and the first spring is arranged between the transmission plate and the injection plate.

[0010] Preferably, the shaping component further includes at least four first waist-shaped holes, each of the first waist-shaped holes is opened on the side surface of the shaping rod, and on the side surface of each shaping rod located at the first waist-shaped hole, there is a plug board fixedly connected in a symmetric structure.

[0011] Preferably, a retaining piece is fixedly sleeved on the inner wall of the right end of each insertion cylinder, a pin on the retaining piece is movably sleeved inside the first waist-shaped hole, and the retaining piece is slidably and sealingly adapted to the plug board.

[0012] Preferably, a cylindrical compression airbag is movably sleeved inside each insertion cylinder, the right end plate of the cylindrical compression airbag is fixedly sleeved inside the insertion cylinder, and the left end plate of the cylindrical compression airbag is fixedly sleeved on the surface of the shaping rod;

[0013] When the cylindrical compression airbag is evacuated, the connecting part between the cylindrical compression airbag and the shaping rod moves to the right, and the plug board passes through the retaining piece to provide a movement space for the shaping rod; when the cylindrical compression airbag is filled with gas, the connecting part between the cylindrical compression airbag and the shaping rod moves to the left, and the plug board is sealingly adapted to the retaining piece to provide a sealing effect during the injection molding of the product. Moreover, when the cylindrical compression airbag is quickly filled with and evacuated of gas, it is used for injecting the product and discharging the gate waste.

[0014] Preferably, the twisting and removing component includes at least one transmission frame, at least one of the transmission frames is fixedly connected to the left inner wall of the transmission groove, the first transmission gear is movably connected inside the transmission frame through a pin, and two first motors are arranged on both sides of the transmission frame, and the two first motors are respectively in transmission connection with two intersecting first transmission gears.

[0015] Preferably, the material distribution component has a blanking groove, the blanking groove is opened on the top of the machine tool, the blanking groove is separated into a waste material groove and a finished product groove by a partition board, a first fillet is arranged at the edge part of the partition board in contact with the waste material groove, a second fillet is arranged at the intersection of the waste material groove and the inner wall of the top of the machine tool, and a plurality of air guns are fixedly connected in a linear array on one inner wall of the blanking groove at the edge of the machine tool;

[0016] When the air guns work, the air guns located below the vertex of the inclined partition board eject airflows. The airflows change the flow direction through the surface shape of the first fillet. One kind is to flow along the inner wall of the bottom of the waste material groove towards the outlet to discharge the waste material, and the other kind is to flow along the inner wall of the waste material groove, pass through the surface of the second fillet, and make the airflows flow obliquely upwards to the right. Among them, the contact area between the injection molded product and the airflows is larger than that of the waste material, resulting in the separation of the injection molded product and the waste material;

[0017] The air guns located above the low point of the inclined partition board eject airflows, passing through the partition board to separate the injection molded product and the waste material during the fall.

[0018] Preferably, an injection molding machine with a mold clamping drive mechanism includes a control system arranged on the top of the machine tool. On the right side of the top of the machine tool, there is an injection molding heating system. On the right side of the top of the machine tool, there is a guardrail fixedly connected. On the top of the guardrail, there is a blanking cylinder, and the blanking cylinder is communicated with the upper heating cavity of the injection molding heating system.

[0019] Compared with the prior art, the beneficial effects of the present invention are as follows:

[0020] 1. The mold clamping drive mechanism of the present invention integrates the functions of plastic shaping and gate waste removal into the plastic shaping rod component. In the traditional production process, plastic shaping and waste removal often need to be operated separately. However, through ingenious design in the present invention, after plastic shaping is completed, the gate waste can be directly processed by the plastic shaping rod, reducing the conversion time between processes and greatly improving production efficiency. Compared with traditional automated cutting equipment, the present invention only adds a small number of structures such as a twisting removal component, and the cost increase is limited.

[0021] 2. Components such as the cylindrical compression airbag, the push rod, and the first transmission gear in the present invention cooperate to achieve the automation of gate waste removal. After injection molding is completed, the cylindrical compression airbag is evacuated or inflated through the control system, and in cooperation with the first motor driving the first transmission gear to rotate, the movement of the plastic shaping rod is accurately controlled to squeeze or expand the gate waste, realizing separation. This automated process is fast and stable, and compared with manual removal of gate waste, the efficiency is improved.

[0022] 3. The material distribution component in the present invention realizes the efficient separation of injection molded products and waste through the cooperation of the blanking groove, the partition plate, the first fillet, the second fillet, and the air gun. The partition plate is inclined, and the air gun at the end is located below the vertex of the partition plate. When the air gun works, the air flow changes the flow direction through the first fillet, and can blow out the gate waste in the waste groove. At the same time, the air flow that changes direction through the second fillet can make the injection molded product fall into the finished product groove. The air gun higher than the low point of the partition plate can also directly convey air to the finished product to make it fall into the finished product groove, improving the accuracy and efficiency of material distribution. Description of the Drawings

[0023] Figure 1 It is a three-dimensional structural schematic diagram of the present invention.

[0024] Figure 2 It is a sectional structural schematic diagram of the overall structure of the present invention.

[0025] Figure 3 It is for the Figure 2 enlarged structural schematic diagram at A in the present invention, showing the usage schematic diagram of the air gun.

[0026] Figure 4 It is a three-dimensional structural schematic diagram of the mold clamping mechanism of the present invention.

[0027] Figure 5 Exploded structural schematic diagram of the mold clamping mechanism of the present invention.

[0028] Figure 6 Of the present invention Figure 5 Enlarged structural schematic diagram at position B in

[0029] Figure 7 Stereoscopic partial structural schematic diagram of the mold clamping mechanism of the present invention.

[0030] Figure 8 Stereoscopic structural schematic diagram of the shaping component of the present invention.

[0031] Figure 9 Stereoscopic exploded structural schematic diagram of the shaping component of the present invention.

[0032] Figure 10 Stereoscopic structural schematic diagram of the twisting and removing component of the present invention.

[0033] Figure 11 Stereoscopic exploded structural schematic diagram of the twisting and removing component of the present invention.

[0034] Figure 12 Schematic sectional view of the structure in use of the mold clamping of the present invention.

[0035] Figure 13 Schematic sectional view of the structure in use of the mold opening of the present invention.

[0036] Figure 14 Schematic sectional view of the structure of the injection molded product of the present invention.

[0037] Explanation of the reference numerals in the figure: 1. Machine tool; 11. Machine cover; 12. Hydraulic transmission system; 13. Tie bar; 2. Mold clamping mechanism; 21. Fixed mold base plate; 22. Moving mold base plate; 221. Transmission plate; 23. Fixed mold; 231. Hole groove; 24. Moving mold; 25. Shaping groove; 26. Gate groove; 261. Shearing plate; 27. Injection plate; 271. Positioning rod; 272. Transmission groove; 273. Limit pin; 274. First spring; 275. Insertion cylinder; 3. Shaping component; 31. Shaping rod; 311. First waist-shaped hole; 312. Insertion plate; 313. Second waist-shaped hole; 32. Flap; 33. Cylindrical compression airbag; 4. Twisting and removing component; 41. Transmission frame; 42. Push rod; 43. First transmission gear; 44. First motor; 5. Material distribution component; 51. Feeding groove; 511. First rounded corner; 512. Second rounded corner; 52. Partition plate; 53. Air gun; 6. Control system; 61. Injection heating system; 62. Guardrail; 63. Feeding cylinder; 7. Cylindrical injection molded product; 71. Gate waste. Detailed implementation manners

[0038] Example 1:

[0039] AsFigure 1 - Figure 2 , Figure 4 - Figure 9 and Figure 12 - Figure 13 As shown in Figure 1 - Figure 2 , Figure 4 - Figure 9 and Figure 12 - Figure 13 , the invention relates to a die clamping drive mechanism based on an injection molding machine, which includes a machine tool 1, a hood 11 with a push-pull door arranged on the top of the machine tool 1, a hydraulic transmission system 12 arranged inside the hood 11, a plurality of tie bars 13 fixedly connected in a square array on one inner wall of the hood 11, a die clamping mechanism 2 with a cooling system arranged at the output end of the hydraulic transmission system 12 inside the hood 11, a plastic shaping component 3 and a twisting and removing component 4 arranged inside the hood 11, and a material distributing component 5 arranged on the top of the machine tool 1.

[0040] The die clamping mechanism 2 includes a fixed mold base plate 21, the fixed mold base plate 21 is fixedly sleeved on the end surfaces of a plurality of tie bars 13, a moving mold base plate 22 is slidably sleeved on the surfaces of the plurality of tie bars 13 together, a transmission plate 221 is fixedly connected to the left side of the moving mold base plate 22, and the transmission plate 221 is in transmission connection with the hydraulic transmission system 12. A fixed mold 23 is fixedly connected to one side of the fixed mold base plate 21 close to the moving mold base plate 22. A plurality of hole grooves 231 are arranged in a square array on one side of the fixed mold 23. A moving mold 24 is fixedly connected to one side of the moving mold base plate 22 close to the fixed mold 23, and the opposite side of the moving mold 24 and the fixed mold 23 is in movable contact. A plurality of plastic shaping grooves 25 are arranged in a square array on the opposite sides of the moving mold 24 and the fixed mold 23 respectively. Gate grooves 26 are respectively arranged on the opposite sides of the moving mold 24 and the fixed mold 23, and the plastic shaping grooves 25 are communicated with the gate grooves 26. Shearing plates 261 are fixedly connected to the inner walls of each gate groove 26 in a symmetric structure. An injection plate 27 is slidably connected inside the moving mold base plate 22. A plurality of positioning rods 271 are fixedly connected to one side of the injection plate 27 in a square array, and the positioning rods 271 pass through the moving mold 24 and are inserted and adapted to the hole grooves 231. A transmission groove 272 is arranged on the top of the injection plate 27. A plurality of limit pins 273 are fixedly connected to one side of the injection plate 27 close to the transmission plate 221, and the limit pins 273 are movably sleeved in the upper holes of the transmission plate 221. A first spring 274 is movably sleeved on the surface of each limit pin 273, and the first spring 274 is arranged between the transmission plate 221 and the injection plate 27. A plurality of insertion cylinders 275 fixedly communicated with the transmission groove 272 are arranged in a square array on one side of the injection plate 27 away from the limit pins 273, and the insertion cylinders 275 are inserted and adapted to the plastic shaping grooves 25 on the moving mold 24.

[0041] During use, the moving mold base plate 22 drives the moving mold 24 and the injection plate 27 to move towards the fixed mold base plate 21. The injection plate 27 is completely inserted into the hole grooves 231 through the positioning rods 271, causing the injection plate 27 to stop translating. At this time, the moving mold base plate 22 continues to translate, driving the moving mold 24 to move and closely fit with the fixed mold 23.

[0042] It should be noted that the plastic shaping grooves 25 can be changed according to the shape of the end of the injection product to adapt to injection products with various end shapes.

[0043] The shaping component 3 includes a number of shaping rods 31. The number of shaping rods 31 are respectively sleeved inside the insertion cylinder 275, and both ends of the shaping rod 31 pass through the insertion cylinder 275. A first waist-shaped hole 311 is formed on the side surface of each shaping rod 31. On the side surface of each shaping rod 31 located at the first waist-shaped hole 311, insertion plates 312 are symmetrically fixedly connected. Second waist-shaped holes 313 are symmetrically formed on the end surface of each shaping rod 31. A retaining piece 32 is fixedly sleeved on the inner wall of the right end of each insertion cylinder 275. A pin on the retaining piece 32 is movably sleeved inside the first waist-shaped hole 311, and the retaining piece 32 is slidably and sealingly adapted to the insertion plate 312. A cylindrical compression airbag 33 is movably sleeved inside each insertion cylinder 275. The right end plate of the cylindrical compression airbag 33 is fixedly sleeved inside the insertion cylinder 275, and the left end plate of the cylindrical compression airbag 33 is fixedly sleeved on the surface of the shaping rod 31.

[0044] Specifically, by inflating or deflating the cylindrical compression airbag 33, when deflating, the shaping rod 31 moves to the right, and the insertion plate 312 passes through the retaining piece 32, causing the shaping rod 31 to rotate axially to separate the gate waste 71 on the injection molded product. When inflating, the shaping rod 31 moves to the left, and the insertion plate 312 is sealingly adapted to the retaining piece 32 to provide a sealing effect during product injection molding.

[0045] It should be noted that the shaping rod 31 is used for injection molding cylindrical injection molded products, such as small-sized cylindrical injection molded products like medicine bottles, cosmetic packaging tubes, and pen tubes.

[0046] Embodiment 2:

[0047] As Figure 10 - Figure 11 shown, in the embodiment of the present invention, the twisting and removing component 4 includes a number of transmission frames 41. The number of transmission frames 41 are fixedly connected in a square array to the left inner wall of the transmission groove 272. Two push rods 42 are movably arranged at the left end of every two shaping rods 31 distributed diagonally. The end of the push rod 42 is movably sleeved inside one of the second waist-shaped holes 313. The ends of every two push rods 42 distributed diagonally are fixedly connected with a first transmission gear 43, and adjacent two first transmission gears 43 are meshed and connected. Every four first transmission gears 43 distributed crosswise are movably connected inside the transmission frame 41 through pins. A first motor 44 is arranged on both sides of one of the transmission frames 41, and the two first motors 44 are respectively in transmission connection with the first transmission gears 43 distributed crosswise.

[0048] Specifically, two groups of cross-distributed first transmission gears 43 are driven to rotate by two first motors 44, and two diagonally distributed first transmission gears 43 rotate toward or oppositely, so that the molding rod 31 of the insert plate 312 passing through the baffle 32 makes axial movement, and the other molding rods 31 are driven to move through the meshing transmission of the first transmission gears 43; when the two diagonally distributed molding rods 31 move toward each other, the molding rods 31 in the same straight line make opposite movement, so that the gate waste 71 located in the middle of the movable mold 24 can be squeezed by the injection molded product, and the gate waste 71 located on the surrounding of the movable mold 24 can be expanded by the injection molded product; when the two diagonally distributed molding rods 31 move toward each other, the gate waste 71 located in the middle of the movable mold 24 is expanded by the injection molded product, and the gate waste 71 located on the surrounding of the movable mold 24 is squeezed by the injection molded product.

[0049] In the present invention, the cylindrical compressed airbag 33, the push rod 42, the first transmission gear 43 and other components work together to realize the automation of the removal of the gate waste 71. After the injection molding is completed, the cylindrical compressed airbag 33 is evacuated or inflated by the control system 6, and the first transmission gear 43 is driven to rotate in cooperation with the first motor 44, and the movement of the molding rod 31 is accurately controlled to squeeze or expand the gate waste 71 to achieve separation. This automated process is fast and stable, and improves efficiency compared to manual removal of the gate waste 71.

[0050] Embodiment 3:

[0051] like Figure 3 As shown, in an embodiment of the present invention, the material dividing component 5 includes a material discharge chute 51, which is opened on the top of the machine tool 1. The material discharge chute 51 is divided into a waste chute and a finished product chute by a partition 52. The edge of the partition 52 in contact with the waste chute is provided with a first rounded corner 511, and the intersection of the waste chute and the inner wall at the top of the machine tool 1 is provided with a second rounded corner 512. The inner wall on one side of the material discharge chute 51 is located at the edge of the machine tool 1 and is fixedly connected to a plurality of air guns 53 in a linear array.

[0052] Specifically, the partition 52 is inclined, and the end air gun 53 is located below the top of the partition 52, so that several air guns 53 are working. The airflow changes the flow direction of the airflow from the end air gun 53 through the first rounded corner 511, and when it flows from the bottom inner wall of the waste trough, the gate waste 71 in the waste trough can be made to flow out through the gas. At the same time, after the airflow passes through the bottom inner wall of the waste trough, the flow direction of the airflow is changed through the second rounded corner 512, so that it flows obliquely to the upper right. When it contacts the product, since the contact area with the product is larger than the contact area of ​​the gate waste 71, the injection molded product falls into the finished product groove, and other air guns 53 that are higher than the partition 52 directly convey airflow to the finished product, so that it falls into the finished product groove.

[0053] In the present invention, the material separation component 5 realizes the efficient separation of injection molded products and waste through the synergistic effect of the material discharge chute 51, the partition plate 52, the first fillet 511, the second fillet 512 and the air gun 53; the partition plate 52 is inclined, and the end air gun 53 is located below the vertex of the partition plate 52. When the air gun 53 works, the air flow changes the flow direction through the first fillet 511, and can blow out the gate waste 71 in the waste chute. At the same time, the air flow that changes direction through the second fillet 512 can make the injection molded product fall into the finished product chute. The air gun 53 above the low point of the partition plate 52 can also directly convey air flow to the finished product to make it fall into the finished product chute, improving the accuracy and efficiency of material separation.

[0054] As Figure 1 shown, an injection molding machine with a mold clamping drive mechanism according to the present invention includes the above-mentioned mold clamping drive mechanism, and further includes a control system 6 arranged on the top of the machine tool 1. An injection molding heating system 61 is arranged on the right side of the top of the machine tool 1. A guardrail 62 is fixedly connected to the right side of the top of the machine tool 1. The guardrail 62 is fixedly connected with a blanking cylinder 63 at the top, and the blanking cylinder 63 is communicated with the upper heating cavity of the injection molding heating system 61.

[0055] Working principle: This embodiment provides a mold clamping drive mechanism and an injection molding machine with this mechanism. Mold clamping and injection molding: First, the hydraulic transmission system 12 drives the moving mold base plate 22 to slide on the surface of the tie rod 13 towards the fixed mold base plate 21. The moving mold base plate 22 drives the moving mold 24 to move, so that the positioning rod 271 is inserted into the hole groove 231, causing the injection molding plate 27 to be fixed. The moving mold base plate 22 continues to move, so that the moving mold base plate 22 is in close contact with the fixed mold 23. As Figure 12 shown, among them, the moving mold base plate 22 is limited in translation by the limit pin 273 and the surface shape of the injection molding plate 27. After mold clamping, through the injection molding heating system 61, the injection molding melt flows into the plastic molding groove 25 through the holes in the fixed mold base plate 21, and several plastic molding grooves 25 are communicated through the gate groove 26;

[0056] Removal of the gate waste 71: During the injection molding, the injection molding solution inside is cooled and solidified by the cooling structure, and then the movable mold base plate 22 is moved to the left by the hydraulic transmission system 12 to restore the initial state, and the cylindrical injection molding product 7 with the gate waste 71 is completely sleeved on the end of the molding rod 31, and then the gas in the cylindrical compressed air bag 33 is extracted through the control system 6, and the left end of the cylindrical compressed air bag 33 moves to the right, so that the molding rod 31 moves to the right, wherein the plug plate 312 is moved out of the baffle 32, and the end of the molding rod 31 slides on the push rod 42 through the second waist hole 313. After the plug plate 312 is moved out, the two first motors 44 are operated simultaneously by the external circuit mechanism to drive the first transmission gear 43 to rotate, and the gear meshing transmission is used to cause The two diagonally distributed push rods 42 are made to rotate axially toward or in opposite directions to apply a force to the molding rods 31, so that the two diagonally distributed molding rods 31 move toward or in opposite directions. When the two diagonally distributed molding rods 31 move toward each other, the molding rods 31 in the same straight line move in the opposite direction, so that the gate waste 71 located in the middle of the movable mold 24 is squeezed by the injection molded product, and the gate waste 71 located on the surrounding of the movable mold 24 is expanded by the injection molded product; when the two diagonally distributed molding rods 31 move toward each other, the gate waste 71 located in the middle of the movable mold 24 is expanded by the injection molded product, and the gate waste 71 located on the surrounding of the movable mold 24 is squeezed by the injection molded product, so that the gate waste 71 is separated from the accommodation product;

[0057] Separation of injection-molded products and waste: After removing the gate waste 71, by extracting gas from the cylindrical compression airbag 33, the cylindrical compression airbag 33 is completely compressed, driving the shaping rod 31 to move to the right. Then, gas is filled into the cylindrical compression airbag 33, causing the cylindrical compression airbag 33 to expand rapidly, making the shaping rod 31 contract rapidly, thereby achieving the blanking effect. And part of the gate waste 71 falls first, and the other part will fall simultaneously with the cylindrical injection-molded product 7. The gate waste 71 that falls first directly falls into the waste slot. When the other part of the gate waste 71 and the cylindrical injection-molded product 7 fall simultaneously, the control system 6 makes the air gun 53 work. Airflow flows out from the air gun 53, and the end air gun 53 is located below the vertex of the inclined partition 52, causing the airflow to change the flow direction through the first rounded corner 511. And part of the airflow flows out from the waste slot outlet. Among them, when the airflow passes through the inner wall of the bottom of the waste slot, the gate waste 71 inside it is discharged. And the other part of the airflow passes through the second rounded corner 512, making the airflow flow obliquely upward to the right, causing the falling cylindrical injection-molded product 7 to contact the flowing airflow. At this time, the contact area between the cylindrical injection-molded product 7 and the airflow is much larger than the contact area of the gate waste 71, causing the cylindrical injection-molded product 7 near the rear to fall downward to the right and fall into the finished product slot. At the same time, the other part of the air gun 53 is located above the low point of the inclined middle partition 52, and the airflow sprays out from the air gun 53 and directly passes through the partition 52, causing the cylindrical injection-molded products 7 in the middle and near the front to fall into the finished product slot, realizing the separation of the gate waste 71 and the cylindrical injection-molded product 7.

[0058] The embodiments disclosed in the present invention are preferred embodiments, but not limited thereto. Those of ordinary skill in the art can easily understand the spirit of the present invention based on the above embodiments and make different extensions and changes. However, as long as they do not depart from the spirit of the present invention, they are within the protection scope of the present invention.

Claims

1. A mold clamping drive mechanism based on an injection molding machine, characterized in that: It includes a machine tool, a hydraulic transmission system arranged on the top of the machine tool, a clamping mechanism with a cooling system arranged at the output end of the hydraulic transmission system, a molding component and a twisting component arranged inside the machine cover, and a material dividing component arranged on the top of the machine tool; The clamping mechanism comprises an injection molding plate arranged above the machine tool, and at least four insert cylinders fixedly connected to the right side of the injection molding plate in a square array; the molding assembly comprises at least four molding rods, each of which is movably sleeved inside the insert cylinder, and each of the molding rods has a second waist-shaped hole on its end surface in a symmetrical structure; the molding rods are used to mold cylindrical injection molding products and remove gate waste on the products; The twisting-off assembly includes at least two groups of four push rods distributed diagonally, and the pin on each push rod is movably sleeved inside one of the second waist-shaped holes, and the two groups of four push rods distributed diagonally intersect, and one end of each of the two diagonally distributed push rods is fixedly connected to a first transmission gear, and the two diagonally distributed first transmission gears are meshed and connected; the first transmission gear rotates to drive the diagonally distributed push rods to make axial rotations in opposite or opposite directions, causing the ends of the four molding rods to gather or expand, thereby squeezing or expanding the gate waste, thereby achieving the removal of the gate waste.

2. A mold clamping drive mechanism based on an injection molding machine according to claim 1, characterized in that: A machine cover with a sliding door is arranged on the top of the machine tool, and a plurality of Corinthian columns are fixedly connected to the inner wall of one side of the machine cover in a square array.

3. A mold clamping drive mechanism based on an injection molding machine according to claim 2, characterized in that: The clamping mechanism includes a fixed mold base plate, which is fixedly sleeved on the end surfaces of several Corinthian columns, and the surfaces of several Corinthian columns are slidably sleeved with a movable mold base plate, and the injection plate is slidably connected to the inside of the movable mold base plate, and a transmission plate is fixedly connected to the left side of the movable mold base plate, and the transmission plate is transmission-connected to the hydraulic transmission system, and the fixed mold base plate is fixedly connected to a fixed mold on the side close to the movable mold base plate, and a plurality of hole grooves are provided on one side of the fixed mold in a square array, and the movable mold base plate is fixedly connected to a movable mold on the side close to the fixed mold, and the movable mold is in active contact with the opposite side of the fixed mold, and the movable mold and the fixed mold are respectively provided with a plurality of molding grooves on the opposite sides of the movable mold in a square array, and the insert is plugged and adapted with the molding groove on the movable mold, and the movable mold and the fixed mold are respectively provided with a gate groove on the opposite sides, and the molding groove is connected to the gate groove, and the inner wall of each gate groove is symmetrically structured and fixedly connected with a shear plate.

4. A mold clamping drive mechanism based on an injection molding machine according to claim 3, characterized in that: A plurality of positioning rods are fixedly connected to one side of the injection molding plate in a square array, and the positioning rods pass through the movable mold and are plugged into the hole grooves. A transmission groove is opened on the top of the injection molding plate. A plurality of limit pins are fixedly connected to the side of the injection molding plate close to the transmission plate, and the limit pins are movably sleeved in the holes on the transmission plate. A first spring is movably sleeved on the surface of each limit pin, and the first spring is arranged between the transmission plate and the injection molding plate.

5. A mold clamping drive mechanism based on an injection molding machine according to claim 4, characterized in that: The shaping component also includes at least four first waist-shaped holes, each of which is opened on the side surface of the shaping rod, and each of the shaping rods is located on the side surface of the first waist-shaped hole in a symmetrical structure and is fixedly connected with a plug plate.

6. A mold clamping drive mechanism based on an injection molding machine according to claim 5, characterized in that: A blocking piece is fixedly sleeved on the inner wall of the right end of each insert tube, and a latch pin on the blocking piece is movably sleeved inside the first waist-shaped hole, and the blocking piece is slidingly and sealingly adapted to the insert plate.

7. A mold clamping drive mechanism based on an injection molding machine according to claim 6, characterized in that: Each of the insert tubes has a cylindrical compressed air bag movably sleeved inside, the right end plate of the cylindrical compressed air bag is fixedly sleeved inside the insert tube, and the left end plate of the cylindrical compressed air bag is fixedly sleeved on the surface of the molding rod; When the cylindrical compressed air bag is evacuated, the connection between the cylindrical compressed air bag and the molding rod moves to the right, and the insert plate passes through the baffle to provide movement space for the molding rod; when the cylindrical compressed air bag is filled with gas, the connection between the cylindrical compressed air bag and the molding rod moves to the left, and the insert plate and the baffle are sealed and adapted to provide a sealing effect during product injection molding, and when the cylindrical compressed air bag is quickly filled and gas is extracted, it is used to discharge injection molded products and gate waste.

8. The mold clamping drive mechanism based on an injection molding machine according to claim 7, characterized in that: The twisting-off assembly includes at least one transmission frame, at least one of the transmission frames is fixedly connected to the left inner wall of the transmission groove, the first transmission gear is movably connected to the inside of the transmission frame through a pin, and first motors are arranged on both sides of the transmission frame, and the two first motors are respectively connected to the two first transmission gears distributed in an intersecting manner.

9. A mold clamping drive mechanism based on an injection molding machine according to claim 8, characterized in that: The material dividing assembly comprises a material discharge trough, which is arranged on the top of the machine tool, and is divided into a waste material trough and a finished product trough by a partition, and a first rounded corner is arranged at the edge of the partition contacting the waste material trough, and a second rounded corner is arranged at the intersection of the waste material trough and the inner wall of the top of the machine tool, and a plurality of air guns are fixedly connected to the inner wall of one side of the material discharge trough at the edge of the machine tool in a linear array; When the air gun is working, the air gun located below the top of the inclined partition ejects airflow, and the airflow passes through the first rounded surface shape to change the direction of the airflow. One direction is to flow along the inner wall of the bottom of the waste tank to the outlet to discharge the waste. The other direction is to flow along the inner wall of the waste tank and pass through the second rounded surface, so that the airflow flows obliquely to the right and upward, wherein the contact area between the injection molded product and the airflow is larger than the contact area between the waste, so that the injection molded product and the waste are separated; An air gun located above the low point of the inclined partition sprays air through the partition to separate the falling injection molded products and waste.

10. An injection molding machine with a mold clamping drive mechanism, characterized in that: It includes the mold clamping drive mechanism described in any one of claims 1 to 8.

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