Kiloton low-station injection molding machine

Abstract

The utility model relates to a kiloton low-station injection molding machine. The injection mold comprises a rack, a fixed mold arranged on the rack, a movable mold arranged above the fixed mold, a mold opening and closing assembly arranged on the fixed mold and used for driving the movable mold to be opened and closed, four mold locking columns vertically penetrating through the movable mold to be connected with the fixed mold, two sets of mold locking mechanisms arranged on the movable mold, and an injection molding mechanism horizontally arranged on the rack and located on the side face of a lower mold. The fixed mold is used for mounting a lower injection mold; the movable mold comprises a pressurizing plate and an upper mold plate; the pressurizing plate is located above the upper die plate, and at least one pressurizing oil cylinder is arranged between the pressurizing plate and the upper die plate. The upper mold plate is used for mounting an upper injection mold; according to the utility model, the pressurizing oil cylinder is arranged on the movable mold, so that the height of the working table surface can be reduced, the operation and the maintenance of a worker are facilitated, and the capacity of required hydraulic oil can be effectively reduced and the use cost can be reduced as the pressurizing oil cylinder only plays a role in mold closing and pressurizing and is short in working stroke.

Description

Technical Field

[0001] The utility model relates to the field of injection molding, in particular to a 1,000-ton low-station injection molding machine. Background Art

[0002] With the wide application of plastic materials and the growing demand, the plastic processing industry has developed rapidly. Among the many plastic processing methods, injection molding technology has gradually become the mainstream technology in the plastic processing industry due to its advantages such as high production efficiency, good product quality, and the ability to process complex shapes.

[0003] As injection molding technology continues to develop, the requirements for injection molding machines are getting higher and higher. In the injection molding process, the clamping force (i.e. the tonnage of the injection molding machine) is a very important parameter, which determines the maximum mold size and maximum injection weight that the injection molding machine can handle. As the size and weight of plastic products increase, larger tonnage injection molding machines are needed to meet production needs.

[0004] In this context, 1,000-ton injection molding machines came into being. 1,000-ton injection molding machines refer to injection molding machines with a clamping force of 1,000 tons. They can handle larger and heavier molds and achieve larger plastic injections. The emergence of 1,000-ton injection molding machines meets the production needs of large, heavy and complex plastic products and promotes the development of the plastic processing industry.

[0005] However, the existing thousand-ton injection molding machines also have many problems during use. For example, the prior art 201921082569.1 discloses a low-worktable brake-locked vertical injection molding machine. Since the high-pressure cylinder is arranged under the lower template, it not only causes the work surface to be too high, but also makes it inconvenient and unsafe for employees to operate and difficult to maintain. At the same time, the injection molding mechanism is vertically arranged on the upper template, which leads to a high height of the whole machine, and has a high requirement on the height of the customer's factory building, and its use is relatively limited.

[0006] Another example is a two-color injection molding machine disclosed in prior art 201520702099.X. Although the lower mold plate is slidably arranged on the lower mold base, the two mold opening and locking cylinders of the mold opening and locking drive device and the boosting cylinder of the boosting drive device are all arranged below the lower mold plate. Not only does it have the above-mentioned problems, but also because the mold opening and locking cylinders and the boosting cylinders are evenly connected to the lower mold plate, the boosting cylinder is large in size, which not only requires a large amount of oil, but also makes the machine consume a lot of energy, the production cost is high, and the moving speed is slow, and the working efficiency is low. Utility Model Content

[0007] The utility model aims to provide a 1,000-ton low-station injection molding machine in order to overcome the deficiencies of the prior art.

[0008] In order to achieve the above-mentioned purpose, the technical solution adopted by the utility model is: a 1,000-ton low-station injection molding machine, comprising a frame, a fixed mold arranged on the frame, a movable mold arranged above the fixed mold, an opening and closing mold assembly arranged on the fixed mold for driving the movable mold to open and close the mold, four clamping columns vertically passing through the movable mold and connecting the fixed mold, two sets of clamping mechanisms arranged on the movable mold, and an injection molding mechanism horizontally arranged on the frame and located on the side of the lower mold;

[0009] The fixed mold is used to install the lower injection mold;

[0010] The movable mold includes a booster plate and an upper mold plate; the booster plate is located above the upper mold plate, and at least one booster cylinder is arranged between the booster plate and the upper mold plate; the upper mold plate is used to install the upper injection mold;

[0011] The two sets of the clamping mechanism components are symmetrically arranged on the booster plate, and each set of the clamping mechanism components can perform brake clamping on two clamping columns at the same time.

[0012] Preferably, the four clamping columns are respectively located at the four corners of the booster plate, and the lower part of each clamping column is an optical axis, and the upper part is at least partially provided with a tooth groove;

[0013] Each set of the clamping mechanism components includes two groups of brake assemblies respectively mounted on the two clamping columns, and a mounting plate arranged on the upper mold plate and located between the two groups of brake assemblies; the two groups of brake assemblies each include two brake blocks respectively slidably arranged on both sides of the clamping columns; oppositely placed brake cylinders are respectively arranged on both sides of the mounting plate; the driving ends of the two brake cylinders are respectively connected to the inner brake blocks of the two groups of brake assemblies through driving shafts; in the two groups of brake assemblies, the outer brake blocks of one group of brake assemblies are connected to the inner brake blocks of the other group of brake assemblies through connecting rods.

[0014] Preferably, the fixed mold includes a lower mold base, at least two guide rail assemblies horizontally arranged on the lower mold base and extending out of the lower mold base, a lower mold plate slidably arranged on the guide rail assemblies, and at least two translation cylinders horizontally arranged on the lower mold base that can drive the lower mold plate to move out of the lower mold base; the lower injection mold is arranged on the lower mold plate.

[0015] Preferably, positioning components for positioning the lower mold plate are respectively provided on both sides of the lower mold base; each of the positioning components includes a positioning hole arranged on the side of the lower mold plate, a positioning seat arranged on the side of the lower mold base, and a positioning cylinder arranged on the positioning seat for driving the positioning pin to be inserted into the positioning hole; the head of the positioning pin is conical.

[0016] Preferably, the lower die base is provided with a plurality of support seats which are staggered with the guide rail assembly and the translation cylinder; and a self-lubricating plate is provided on the top surface of each of the support seats.

[0017] Preferably, the mold opening and closing assembly comprises at least two mold opening and closing oil cylinders vertically arranged on the lower mold base and whose driving ends are connected to the booster plate or the upper mold plate; self-lubricating sleeves are arranged between the clamping columns of the booster plate and the upper mold plate.

[0018] Preferably, it also includes a height measuring component for measuring the lifting height of the movable mold; the height measuring component includes a displacement sensor vertically arranged on the fixed mold; the detection end of the displacement sensor is connected to the movable mold through a connecting rod.

[0019] Preferably, it also includes a safety limit assembly for preventing the movable mold from falling suddenly during the mold opening process; the safety limit group includes a limit column vertically arranged on the fixed mold, a plurality of slots vertically and evenly arranged on the limit column, a block slidably arranged on the movable mold, and a limit cylinder arranged on the movable mold that can drive the block to be inserted into the slot.

[0020] Preferably, a connection frame is provided above the movable mold; the connection frame is in a U-shape and connected to the top ends of four clamping columns; and a plurality of hollow portions are evenly provided on the connection frame.

[0021] Preferably, the frame is provided with protective covers on both sides and in front of the fixed mold, and a platform located above the injection molding mechanism is provided behind the fixed mold;

[0022] The height of the protective cover is higher than the connection frame, and openable side protective doors are respectively provided on both sides of the protective cover, and a lifting protective door that can be raised and lowered synchronously with the movable mold is provided in the front; the protective cover is also provided with safety gratings on both sides of the lifting protective door;

[0023] The side protection door and the lifting protection door are each provided with at least one observation window;

[0024] A straight ladder connected to the ground is arranged on the platform.

[0025] Due to the application of the above technical solution, the utility model has the following advantages compared with the prior art:

[0026] 1. The utility model sets the booster cylinder on the moving mold, which not only reduces the height of the work surface, but also makes it easier for workers to operate and safer, improves work efficiency, and is convenient for maintenance;

[0027] 2. Since the booster cylinder of the utility model only plays the role of mold closing and boosting, the working stroke is short, which can effectively reduce the capacity of the required hydraulic oil and reduce the use cost;

[0028] 3. The utility model can reduce the overall height of the equipment by arranging the injection molding mechanism on the side of the fixed mold, thus avoiding the limitation of the height of the factory building;

[0029] 4. Since the injection mold of the thousand-ton low-station injection molding machine is not only large in size but also relatively heavy, the utility model provides a slidable lower mold structure, which is not only convenient for replacing the mold, but also staggered with the upper mold when the injection molded product is unloaded, which is safer. BRIEF DESCRIPTION OF THE DRAWINGS

[0030] The technical solution of the utility model is further described below in conjunction with the accompanying drawings:

[0031] Attached Figure 1 It is a side view of the 1,000-ton low-station injection molding machine described in the utility model;

[0032] Attached Figure 2 It is a schematic diagram of the front structure of the clamping part in the utility model;

[0033] Attached Figure 3 It is a structural schematic diagram of the clamping mechanism in the utility model;

[0034] Attached Figure 4 It is a structural schematic diagram of the movable mold in the utility model;

[0035] Attached Figure 5 It is a structural schematic diagram of the positioning component in the utility model;

[0036] Attached Figure 6 It is a schematic diagram of the rear structure of the clamping part in the utility model;

[0037] Attached Figure 7 It is a structural schematic diagram of the height measurement component in the utility model;

[0038] Attached Figure 8 for Figure 6 A partial enlarged view of the middle part;

[0039] Attached Fig. 9 This is a schematic diagram of the mechanism of the utility model after the protective cover is installed.

[0040] Among them: 1. Frame; 2. Fixed mold; 21. Lower mold base; 22. Guide rail assembly; 23. Lower mold plate; 24. Translation cylinder; 25. Positioning assembly; 251. Positioning seat; 252. Positioning pin; 253. Positioning cylinder; 26. Support seat; 27. Self-lubricating plate; 28. Support frame; 3. Moving mold; 31. Upper mold plate; 32. Boosting plate; 33. Boosting cylinder; 4. Opening and closing mold assembly; 41. Opening and closing mold cylinder; 5. Clamping column; 51. Tooth groove; 6. Clamping mechanism; 61. Brake assembly A; 611. External brake block A; 612. Internal brake block A; 62. Brake assembly B; 621. External Brake block B; 622, inner brake block B; 63, mounting plate; 64, upper connecting rod; 65, lower connecting rod; 66, brake cylinder; 67, drive shaft; 7, injection molding mechanism; 8, height measurement component; 81, displacement sensor; 82, detection end; 83, connecting rod; 9, safety limit component; 91, limit column; 92, slot; 93, guide sleeve; 94, block; 95, limit cylinder; 10, connecting frame; 101, hollow part; 11, protective cover; 111, side protective door; 112, lifting protective door; 113, safety grating; 114, observation window; 12, platform; 121, ladder. DETAILED DESCRIPTION

[0041] The present invention will be further described in detail below in conjunction with the accompanying drawings and specific embodiments.

[0042] Attached Figure 1-2 The 1,000-ton low-station injection molding machine described in the utility model comprises a frame 1, a fixed mold 2 arranged on the frame 1, a movable mold 3 arranged above the fixed mold 2, a mold opening and closing assembly 4 arranged on the fixed mold 2 for driving the movable mold 3 to open and close the mold, four clamping columns 5 vertically passing through the movable mold 3 and connected to the fixed mold 2, two sets of clamping mechanisms 6 arranged on the movable mold 3, and an injection molding mechanism 7 horizontally arranged on the frame 1 and located on the side of the lower mold;

[0043] The fixed mold 2 is used to install the lower injection mold;

[0044] The movable mold 3 includes an upper mold plate 31 and a booster plate 32; the booster plate 32 is located above the upper mold plate 31, and two booster cylinders 33 are arranged between them; the upper mold plate 31 is used to install the upper injection mold;

[0045] The mold opening and closing assembly 4 includes four mold opening and closing oil cylinders 41 vertically arranged on the lower mold base 21 and the driving ends of which are connected to the upper mold plate 31;

[0046] The two sets of the mold locking mechanisms 6 are symmetrically arranged on the booster plate 32 , and each set of the mold locking mechanisms 6 can perform brake locking on two mold locking columns 5 at the same time.

[0047] During operation: the lower injection mold is installed on the fixed mold 2, and the upper injection mold is installed on the upper mold plate 31; then the equipment is started, and the upper mold plate 31 is driven by four mold opening and closing cylinders 41 to drive the booster plate 32 to descend synchronously; when the injection mold is initially closed, the two clamping columns 5 on each side are respectively braked and locked by two sets of clamping mechanisms 6; then the two booster cylinders 33 are driven at the same time to close and pressurize the lower mold plate 23 to increase the clamping force; finally, the injection molding process is carried out through the injection molding mechanism 7.

[0048] The number of the boost cylinders 33 can be set according to the actual tonnage required by the customer and is not limited to two.

[0049] The utility model arranges the booster cylinder 33 on the movable mold 3, which not only reduces the height of the work surface, facilitates the operation of the staff, is safer, improves the work efficiency, but also facilitates and facilitates maintenance; because the booster cylinder 33 only plays the role of mold closing and boosting, the working stroke is short, which can effectively reduce the capacity of the required hydraulic oil and reduce the cost of use; at the same time, by arranging the injection mechanism 7 on the side of the fixed mold 2, the overall height of the equipment can be reduced to avoid being restricted by the height of the factory building.

[0050] Further, if Figure 2 As shown, the four clamping columns 5 are respectively located at the four corners of the booster plate 32, and the lower part of each clamping column 5 is an optical axis, and the upper part is at least partially provided with a tooth groove 51;

[0051] like Figure 3 As shown, each set of the mold locking mechanism 6 includes a brake assembly A61 and a brake assembly B62 respectively mounted on the two mold locking columns 5, and a mounting plate 63 disposed on the upper mold plate 31 and located between the brake assembly A61 and the brake assembly B62;

[0052] The brake assembly A61 includes an outer brake block A611 and an inner brake block A612 which are respectively slidably arranged on both sides of one of the clamping columns 5; the brake assembly B62 includes an outer brake block B621 and an inner brake block B622 which are respectively slidably arranged on both sides of the other clamping column 5; the outer brake block A611 and the inner brake block B622 are connected by two upper connecting rods 64; the inner brake block A612 and the outer brake block B621 are connected by two lower connecting rods 65;

[0053] The two sides of the mounting plate 63 are respectively provided with brake cylinders 66 placed opposite to each other; the driving ends of the two brake cylinders 66 are respectively connected to the inner brake block A612 and the inner brake block B622 through the driving shaft 67.

[0054] When the injection mold is initially closed, the two brake cylinders 66 drive the inner brake block A612 and the inner brake block B622 to move toward the clamping column 5 through the drive shaft 67 respectively. Since the outer brake block A611 is connected to the inner brake block B622 through two upper connecting rods 64, and the inner brake block A612 is connected to the outer brake block B621 through two lower connecting rods 65, the outer brake block A611 and the outer brake block B621 are also driven to move toward the clamping column 5, cooperating with the tooth groove 51 to realize brake clamping.

[0055] Furthermore, the fixed mold 2 can also be directly locked to the ground, or a groove can be pre-buried in the ground, and the fixed mold 2 can be installed in the pre-buried groove so that the work surface is flush with the ground, which can further reduce the height of the work surface.

[0056] Further, if Figure 4 As shown, the fixed mold 2 includes a lower mold base 21, two guide rail assemblies 22 horizontally arranged on the lower mold base 21 and extending out of the lower mold base 21, a lower mold plate 23 slidably arranged on the guide rail assembly 22, and two translation cylinders 24 horizontally arranged on the lower mold base 21 that can drive the lower mold plate 23 to move out of the lower mold base 21; the lower mold plate 23 is used to install the lower injection mold.

[0057] During operation, the lower mold plate 23 is driven out of the lower mold base 21 by two translation cylinders 24 and is staggered with the upper mold plate 31, which is not only convenient for replacing the mold but also safer when unloading the injection molded product. The guide rail assembly 22 not only plays a guiding role, but also can reduce the mode and increase the service life.

[0058] Further, if Figure 5 As shown, positioning components 25 for positioning the lower mold plate 23 are respectively provided on both sides of the lower mold base 21; each of the positioning components 25 includes a positioning hole arranged on the side of the lower mold plate 23, a positioning seat 251 arranged on the side of the lower mold base 21, and a positioning cylinder 253 arranged on the positioning seat 251 for driving the positioning pin 252 to be inserted into the positioning hole; the head of the positioning pin 252 is conical.

[0059] When the two translation cylinders 24 drive the lower template 23 back to the injection position, that is, directly below the upper template 31, the positioning cylinders 253 on both sides of the lower mold base 21 drive the positioning pins 252 to insert into the positioning holes to position the lower template 23, thereby improving the injection quality.

[0060] Further, if Figure 4 As shown, the lower die base 21 is provided with a plurality of support seats 26 which are staggered with the guide rail assembly 22 and the translation cylinder 24 to play a supporting role, which can not only prevent the lower die plate 23 from being deformed, but also share the force of the guide rail assembly 22 and improve the service life.

[0061] Further, if Figure 4 As shown, the top surface of each support seat 26 is provided with a self-lubricating plate 27 to reduce wear and increase service life.

[0062] Further, if Fig. 9 As shown, a support frame 28 of the same height is also provided in front of the lower die base 21; the support frame 28 is used to support the guide rail assembly 22 extending out of the lower die base 21, which can effectively prevent the guide rail assembly 22 from being deformed and improve the service life.

[0063] Furthermore, self-lubricating bushings are provided between the pressure plate 32 and the upper mold plate 31 and the clamping columns 5 to reduce wear and increase service life.

[0064] Further, if Figure 7 As shown, it also includes a height measuring component 8 for measuring the lifting height of the movable mold 3; the height measuring component 8 includes a displacement sensor 81 vertically arranged on the lower mold base 21; the detection end 82 of the displacement sensor 81 is connected to the boosting plate 32 through a connecting rod 83.

[0065] When the mold opening and closing cylinder 41 drives the upper mold plate 31 to rise and fall, the upper mold plate 31 simultaneously drives the booster plate 32 to rise and fall. Since the detection end 82 of the displacement sensor 81 is connected to the booster plate 32 through the connecting rod 83, the lifting height of the movable mold 3 can be detected.

[0066] Further, if Figure 8 As shown, it also includes a safety limit assembly 9 for preventing the movable mold 3 from falling suddenly during the mold opening process; the safety limit assembly includes a limit column 91 vertically arranged on the fixed mold 2, a plurality of slots 92 vertically and evenly arranged on the limit column 91, a guide sleeve 93 arranged on the side of the booster plate 32 and sleeved on the limit column 91, a block 94 slidably arranged on the movable mold 3, and a limit cylinder 95 arranged on the movable mold 3 that can drive the block 94 to be inserted into the slot 92.

[0067] When the injection mold is opened, the limit cylinder 95 drives the block 94 to insert into the slot 92 to play a limiting role, preventing the movable mold 3 from falling suddenly during the mold opening process, which is safer; the guide sleeve 93 guides the limit column 91 during the lifting and lowering process of the movable mold 3.

[0068] Further, if Figure 2 As shown, a connecting frame 10 is arranged above the movable mold 3; the connecting frame 10 is in a mouth shape and is connected to the top ends of the four clamping columns 5, so that the overall structure is more solid; a plurality of hollow parts 101 are evenly arranged on the connecting frame 10, which can reduce the weight while ensuring the strength.

[0069] Further, if Fig. 9As shown, the frame 1 is provided with protective covers 11 on both sides and in front of the fixed mold 2 to play a role of safety protection and facilitate repair and maintenance.

[0070] Further, if Fig. 9 As shown, the height of the protective cover 11 is higher than the connecting frame 10, and openable side protective doors 111 are respectively provided on both sides thereof, and a lifting protective door 112 which can be raised and lowered synchronously with the movable mold 3 is provided in the front; wherein the openable side protective door 111 is also provided for repair and maintenance, and the lifting protective door 112 which can be raised and lowered synchronously with the movable mold 3 is provided, which can play a protective role during injection molding, and does not interfere with the mold during unloading, which is safer.

[0071] Furthermore, the protective cover 11 is also provided with safety gratings 113 on both sides of the lifting protection door 112 to form a protective grating to protect the personal safety of the operators and reduce the possibility of the operators being injured in the working environment;

[0072] Further, if Fig. 9 As shown, the side protection door 111 and the lifting protection door 112 are both provided with four observation windows 114, so as to observe the internal injection molding conditions through the observation windows 114 and find problems in time.

[0073] Further, if Fig. 9 As shown, a platform 12 located above the injection molding mechanism 7 is arranged on the frame 1 behind the fixed mold 2; a straight ladder 121 connected to the ground is arranged on the platform 12 for easy repair and maintenance.

[0074] Furthermore, the injection molding mechanism 7 is a prior art, and reference may be made to a new type of pressurized injection molding mechanism and a high-efficiency bottle blowing machine disclosed in 201920406154.9, so its structure will not be described in detail.

[0075] The above are only specific application examples of the utility model, and do not constitute any limitation on the protection scope of the utility model. Any technical solution formed by equivalent transformation or equivalent replacement falls within the protection scope of the utility model.

Claims

1. A 1,000-ton low-station injection molding machine, characterized in that: It comprises a frame, a fixed mold arranged on the frame, a movable mold arranged above the fixed mold, a mold opening and closing assembly arranged on the fixed mold for driving the movable mold to open and close the mold, four clamping columns vertically passing through the movable mold and connecting the fixed mold, two sets of clamping mechanisms arranged on the movable mold, and an injection molding mechanism horizontally arranged on the frame and located on the side of the lower mold; The fixed mold is used to install the lower injection mold; The movable mold includes a booster plate and an upper mold plate; the booster plate is located above the upper mold plate, and at least one booster cylinder is arranged between the booster plate and the upper mold plate; the upper mold plate is used to install the upper injection mold; The two sets of the clamping mechanism components are symmetrically arranged on the booster plate, and each set of the clamping mechanism components can perform brake clamping on two clamping columns at the same time.

2. The 1,000-ton low-station injection molding machine according to claim 1, characterized in that: The four clamping columns are respectively located at the four corners of the booster plate, and the lower part of each clamping column is an optical axis, and the upper part is at least partially provided with a tooth groove; Each set of the clamping mechanism components includes two groups of brake assemblies respectively mounted on the two clamping columns, and a mounting plate arranged on the upper mold plate and located between the two groups of brake assemblies; the two groups of brake assemblies each include two brake blocks respectively slidably arranged on both sides of the clamping columns; oppositely placed brake cylinders are respectively arranged on both sides of the mounting plate; the driving ends of the two brake cylinders are respectively connected to the inner brake blocks of the two groups of brake assemblies through driving shafts; in the two groups of brake assemblies, the outer brake blocks of one group of brake assemblies are connected to the inner brake blocks of the other group of brake assemblies through connecting rods.

3. The 1,000-ton low-station injection molding machine according to claim 1, characterized in that: The fixed mold includes a lower mold base, at least two guide rail assemblies horizontally arranged on the lower mold base and extending out of the lower mold base, a lower mold plate slidably arranged on the guide rail assemblies, and at least two translation cylinders horizontally arranged on the lower mold base that can drive the lower mold plate to move out of the lower mold base; the lower injection mold is arranged on the lower mold plate.

4. The 1,000-ton low-station injection molding machine according to claim 3 is characterized in that: Positioning components for positioning the lower mold plate are respectively arranged on both sides of the lower mold base; each of the positioning components includes a positioning hole arranged on the side of the lower mold plate, a positioning seat arranged on the side of the lower mold base, and a positioning cylinder arranged on the positioning seat for driving the positioning pin to be inserted into the positioning hole; the head of the positioning pin is conical.

5. The 1,000-ton low-station injection molding machine according to claim 4 is characterized in that: The lower die base is provided with a plurality of support seats which are staggered with the guide rail assembly and the translation cylinder; and the top surface of each support seat is provided with a self-lubricating plate.

6. The 1,000-ton low-station injection molding machine according to any one of claims 3 to 5, characterized in that: The mold opening and closing assembly comprises at least two mold opening and closing oil cylinders which are vertically arranged on the lower mold base and whose driving ends are connected to the booster plate or the upper mold plate; self-lubricating bushings are arranged between the clamping columns of the booster plate and the upper mold plate.

7. The 1,000-ton low-station injection molding machine according to any one of claims 1 to 5, characterized in that: It also includes a height measuring component for measuring the lifting height of the movable mold; the height measuring component includes a displacement sensor vertically arranged on the fixed mold; the detection end of the displacement sensor is connected to the movable mold through a connecting rod.

8. The 1,000-ton low-station injection molding machine according to any one of claims 1 to 5, characterized in that: It also includes a safety limit assembly for preventing the movable mold from falling suddenly during the mold opening process; the safety limit group includes a limit column vertically arranged on the fixed mold, a plurality of slots vertically and evenly arranged on the limit column, a block slidably arranged on the movable mold, and a limit cylinder arranged on the movable mold that can drive the block to be inserted into the slot.

9. The 1,000-ton low-station injection molding machine according to any one of claims 1 to 5, characterized in that: A connection frame is arranged above the movable mold; the connection frame is in a U-shape and is connected to the top ends of four clamping columns; and a plurality of hollow parts are evenly arranged on the connection frame.

10. The 1,000-ton low-station injection molding machine according to any one of claims 1 to 5, characterized in that: The frame is provided with protective covers on both sides and in front of the fixed mold, and a platform located above the injection molding mechanism is provided behind the fixed mold; The height of the protective cover is higher than the connection frame, and openable side protective doors are respectively provided on both sides of the protective cover, and a lifting protective door that can be raised and lowered synchronously with the movable mold is provided in the front; the protective cover is also provided with safety gratings on both sides of the lifting protective door; The side protection door and the lifting protection door are each provided with at least one observation window; A straight ladder connected to the ground is arranged on the platform.

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