Kiloton-level low-station hydraulic mold locking structure

Abstract

The utility model relates to a kiloton-level low-station hydraulic mold locking structure. The kiloton-level low-station hydraulic mold locking structure comprises a movable mold arranged above a fixed mold, a mold opening and closing oil cylinder 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, and two mold locking mechanisms arranged on the movable 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 two sets of mold locking mechanism components are symmetrically arranged on the pressurizing plate, and each set of mold locking mechanism component can be used for carrying out band-type brake mold locking on the two mold locking columns at the same time; 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 thousand-ton-level low-station hydraulic mold locking structure. 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. Utility Model Content

[0006] The utility model aims to overcome the deficiencies of the prior art and provide a 1,000-ton low-position hydraulic clamping structure.

[0007] In order to achieve the above-mentioned purpose, the technical solution adopted by the utility model is: a thousand-ton low-station hydraulic clamping structure, comprising a movable mold arranged above a fixed mold, an opening and closing mold cylinder 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, and two sets of clamping mechanisms arranged on the movable mold;

[0008] 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;

[0009] 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.

[0010] 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;

[0011] Each set of the clamping mechanism components comprises two sets of brake assemblies respectively sleeved on two clamping columns, and a mounting plate arranged on the upper mold plate and located between the two sets of brake assemblies;

[0012] The two groups of brake assemblies each include two brake blocks slidably arranged on both sides of the clamping column; 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 a connecting rod;

[0013] The two sides of the mounting plate are respectively provided with brake cylinders placed opposite to each other; the driving ends of the two brake cylinders are respectively connected to the inner brake blocks of the two brake assemblies through driving shafts.

[0014] Preferably, each set of the clamping mechanism components also includes a brake detection assembly for detecting the tightness of the brake assembly; the brake detection assembly includes an induction ring arranged on one of the connecting rods, a detection frame arranged on the other connecting rod, and a sensor arranged on the detection frame; two sensors are provided and are spaced apart along the axis direction of the connecting rod, one of the sensors is used to detect whether the brake assembly is clamping the clamping column, and the other sensor is used to detect whether the brake assembly is releasing the clamping column.

[0015] Preferably, the detection frame is provided with a horizontally placed long groove; the two sensors are installed in the long groove.

[0016] Preferably, the brake detection assembly comprises an upper connecting block and a lower connecting block; the upper connecting block and the lower connecting block are fixed to the connecting rod by bolts; and the detection frame is arranged on the upper connecting block or the lower connecting block.

[0017] Preferably, guide limit assemblies are provided on both sides of each group of brake assemblies on the booster plate, and limit strips are provided on the outer ends of each group of brake assemblies;

[0018] Both sides of each brake block are horizontally provided with guide grooves;

[0019] The guide and limit assembly comprises two guide bars arranged on both sides of the brake block, and a limit clamping bar arranged on the guide bars and partially located in the guide groove.

[0020] 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.

[0021] 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.

[0022] Due to the application of the above technical solution, the utility model has the following advantages compared with the prior art:

[0023] 1. The present invention arranges the booster cylinder on the movable 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 facilitates maintenance;

[0024] 2. Since the booster cylinder of the present invention 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. BRIEF DESCRIPTION OF THE DRAWINGS

[0025] The technical solution of the utility model is further described below in conjunction with the accompanying drawings:

[0026] Attached Figure 1 This is a front structural schematic diagram of the 1,000-ton low-position hydraulic clamping structure described in the utility model;

[0027] Attached Figure 2 It is a structural schematic diagram of the clamping mechanism in the utility model;

[0028] Attached Figure 3 for Figure 2 A partial enlarged view of the middle A;

[0029] Attached Figure 4 for Figure 2 A partial enlarged view of point B in the middle;

[0030] Attached Figure 5 This is a schematic diagram of the rear structure of the 1,000-ton low-position hydraulic clamping structure described in the utility model;

[0031] Attached Figure 6 It is a structural schematic diagram of the height measurement component in the utility model;

[0032] Attached Figure 7 for Figure 5 A partial enlarged view of point C in the middle.

[0033] Among them: 1. Fixed mold; 2. Moving mold; 21. Boosting plate; 22. Upper mold plate; 23. Boosting cylinder; 3. Opening and closing mold cylinder; 4. Locking column; 41. Thread groove; 5. Locking mechanism; 51. Brake assembly A; 511. External brake block A; 512. Internal brake block A; 52. Brake assembly B; 521. External brake block B; 522. Internal brake block B; 53. Mounting plate; 54. Upper connecting rod; 55. Lower connecting rod; 56. Brake cylinder; 57. Brake detection assembly; 571. Induction ring; 572, detection frame; 573, holding sensor; 574, releasing sensor; 575, long groove; 576, upper connecting block; 577, lower connecting block; 58, guide limit assembly; 581, guide bar; 582, limit card strip; 59, limit bar; 6, height measurement assembly; 61, displacement sensor; 62, detection end; 64, connecting rod; 7, safety limit assembly; 71, limit column; 72, card slot; 73, guide sleeve; 74, card block; 75, limit cylinder. DETAILED DESCRIPTION

[0034] The present invention will be further described in detail below in conjunction with the accompanying drawings and specific embodiments.

[0035] Attached Figure 1 The 1,000-ton low-station hydraulic clamping structure of the utility model comprises a movable mold 2 arranged above a fixed mold 1, a mold opening and closing oil cylinder 3 for driving the movable mold 2 to open and close the mold, four clamping columns 4 vertically passing through the movable mold 2 and connected to the fixed mold 1, and two sets of clamping mechanisms 5 arranged on the movable mold 2;

[0036] The movable mold 2 includes a booster plate 21 and an upper mold plate 22; the booster plate 21 is located above the upper mold plate 22, and at least one booster cylinder 23 is disposed between the booster plate 21 and the upper mold plate 22;

[0037] The two sets of the mold locking mechanisms 5 are symmetrically arranged on the supercharging plate 21 , and each set of the mold locking mechanisms 5 can perform brake locking on two mold locking columns 4 at the same time.

[0038] During operation: the lower injection mold is installed on the fixed mold 1, and the upper injection mold is installed on the upper mold plate 22; then the equipment is started, and the upper mold plate 22 is driven by the four mold opening and closing cylinders 3 to drive the booster plate 21 to descend synchronously; when the injection mold is initially closed, the two clamping columns 4 on each side are respectively clamped by two sets of clamping mechanisms 5; then the two booster cylinders 23 are driven at the same time to close the mold and boost the pressure on the lower mold plate 23 to increase the clamping force; finally, the injection molding process is carried out through the injection molding mechanism.

[0039] The number of the boost cylinders 23 can be set according to the actual tonnage required by the customer and is not limited to two.

[0040] Further, if Figure 1-2As shown, the four clamping columns 4 are respectively located at the four corners of the booster plate 21, and the lower part of each clamping column 4 is an optical axis, and the upper part is at least partially provided with a tooth groove;

[0041] Each set of the five clamping mechanisms includes a brake assembly A51 and a brake assembly B52 respectively mounted on two clamping columns 4, and a mounting plate 53 disposed on the upper mold plate 22 and located between the brake assembly A51 and the brake assembly B52;

[0042] The brake assembly A51 includes an outer brake block A511 and an inner brake block A512 which are respectively slidably arranged on both sides of one of the clamping columns 4; the brake assembly B52 includes an outer brake block B521 and an inner brake block B522 which are respectively slidably arranged on both sides of the other clamping column 4; the outer brake block A511 and the inner brake block B522 are connected by two upper connecting rods 54; the inner brake block A512 and the outer brake block B521 are connected by two lower connecting rods 55;

[0043] The two sides of the mounting plate 53 are respectively provided with brake cylinders 56 placed opposite to each other; the driving ends of the two brake cylinders 56 are respectively connected to the inner brake block A512 and the inner brake block B522 through the driving shaft.

[0044] When the injection mold is initially closed, the two brake cylinders 56 drive the inner brake block A512 and the inner brake block B522 to move toward the clamping column 4 through the driving shaft respectively. Since the outer brake block A511 is connected to the inner brake block B522 through two upper connecting rods 54, and the inner brake block A512 is connected to the outer brake block B521 through two lower connecting rods 55, the outer brake block A511 and the outer brake block B521 are also driven to move toward the clamping column 4, cooperating with the tooth groove 41 to realize brake clamping.

[0045] Further, if Figure 3 As shown, each set of the five clamping mechanisms also includes a brake detection assembly 57 for detecting the tightness of the brake assembly; the brake detection assembly 57 includes an induction ring 571 arranged on the lower connecting rod, a detection frame 572 arranged on the upper connecting rod, a clamping sensor 573 and a release sensor 574 arranged on the detection frame 572; the clamping sensor 573 and the release sensor 574 are spaced apart along the axis direction of the connecting rod.

[0046] When the two brake cylinders 56 simultaneously drive the two groups of brake assemblies to perform brake locking, and the clamping sensor 573 moves to the induction ring 571, it means that the brake assembly has clamped the clamping column 4; when the two brake cylinders 56 respectively drive the two groups of brake assemblies to release the clamping column 4, and the release sensor 574 moves to the induction ring 571, it means that the brake assembly has released the clamping column 4.

[0047] Further, if Figure 3 As shown, the detection frame 572 is provided with a horizontally placed long slot 575; the two sensors are installed in the long slot 575 and fixed by bolts, which is convenient for adjusting the position, reducing the processing accuracy and reducing the production cost.

[0048] Further, if Figure 3 As shown, the brake detection assembly 57 includes an upper connecting block 576 and a lower connecting block 577; the upper connecting block 576 and the lower connecting block 577 are fixed to the connecting rod by bolts; the detection frame 572 is arranged on the upper connecting block 576 for easy installation and position adjustment.

[0049] Further, if Figure 4 As shown, guide limit assemblies 58 are provided on both sides of each group of brake assemblies on the booster plate 21, and limit strips 59 are provided on the outer ends of each group of brake assemblies;

[0050] Both sides of each brake block are horizontally provided with guide grooves;

[0051] The guide and limit assembly 58 includes two guide bars 581 arranged on both sides of the brake block, and a limit clamping bar 582 arranged on the guide bar 581 and partially located in the guide groove.

[0052] When the utility model drives the brake assembly to clamp or release the locking column 4, the two guide strips 581 not only play a guiding role, but also can effectively prevent the brake block from deviating to both sides during the translation process; and the limit strip 582, which is partially located in the guide groove, can limit the upward deviation of the brake block during the translation process, thereby improving the brake accuracy; as for the limit strip 59, it is used to play a limiting role when the brake assembly releases the locking column 4; wherein the guide strip 581 and the limit strip 582 are made of self-lubricating material, which can reduce wear and increase service life.

[0053] Further, if Figure 6 As shown, it also includes a height measuring component 6 for measuring the lifting height of the movable mold 2; the height measuring component 6 includes a displacement sensor 61 vertically arranged on the fixed mold 1; the detection end 62 of the displacement sensor 61 is connected to the upper mold plate 22 through a connecting rod 63.

[0054] When the mold opening and closing cylinder 3 drives the upper mold plate 22 to rise and fall, the upper mold plate 22 synchronously drives the booster plate 21 to rise and fall. Since the detection end 62 of the displacement sensor 61 is connected to the booster plate 21 through the connecting rod 63, the lifting height of the movable mold 2 can be detected.

[0055] Further, if Figure 7As shown, it also includes a safety limit assembly 7 for preventing the movable mold 2 from falling suddenly during the mold opening process; the safety limit assembly 7 includes a limit column 71 vertically arranged on the fixed mold 1, a plurality of slots 72 vertically and evenly arranged on the limit column 71, a guide sleeve 73 arranged on the side of the booster plate 21 and sleeved on the limit column 71, a block 74 slidably arranged on the movable mold 2, and a limit cylinder 75 arranged on the upper mold plate 22 and capable of driving the block 74 to be inserted into the slot.

[0056] When the injection mold is opened, the limit cylinder 75 drives the block 74 to insert into the slot 72 to play a limiting role, preventing the movable mold 2 from falling suddenly during the mold opening process, which is safer; the guide sleeve 73 guides the limit column 71 during the lifting and lowering process of the movable mold 2.

[0057] 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-position hydraulic clamping structure, characterized in that: It comprises a movable mold arranged above the fixed mold, an opening and closing mold cylinder 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, and two sets of clamping mechanisms arranged on the movable 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 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-position hydraulic clamping structure according to claim 1 is 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 comprises two sets of brake assemblies respectively sleeved on two clamping columns, and a mounting plate arranged on the upper mold plate and located between the two sets of brake assemblies; The two groups of brake assemblies each include two brake blocks slidably arranged on both sides of the clamping column; 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 a connecting rod; The two sides of the mounting plate are respectively provided with brake cylinders placed opposite to each other; the driving ends of the two brake cylinders are respectively connected to the inner brake blocks of the two brake assemblies through driving shafts.

3. The 1,000-ton low-position hydraulic clamping structure according to claim 2 is characterized in that: Each set of the clamping mechanism components also includes a brake detection assembly for detecting the tightness of the brake assembly; the brake detection assembly includes an induction ring arranged on one of the connecting rods, a detection frame arranged on the other connecting rod, and a sensor arranged on the detection frame; two sensors are provided and are spaced apart along the axis direction of the connecting rod, one of the sensors is used to detect whether the brake assembly is clamping the clamping column, and the other sensor is used to detect whether the brake assembly is releasing the clamping column.

4. The thousand-ton low-position hydraulic clamping structure according to claim 3 is characterized by: The detection frame is provided with a horizontally placed long slot; the two sensors are installed in the long slot.

5. The thousand-ton low-position hydraulic clamping structure according to claim 4 is characterized by: The brake detection assembly comprises an upper connecting block and a lower connecting block; the upper connecting block and the lower connecting block are fixed on a connecting rod by bolts; and the detection frame is arranged on the upper connecting block or the lower connecting block.

6. The 1,000-ton low-position hydraulic clamping structure according to claim 5 is characterized by: The booster plate is provided with guide limit assemblies on both sides of each group of brake assemblies, and a limit strip is provided at the outer end of each group of brake assemblies; Both sides of each brake block are horizontally provided with guide grooves; The guide and limit assembly comprises two guide bars arranged on both sides of the brake block, and a limit clamping bar arranged on the guide bars and partially located in the guide groove.

7. The 1,000-ton low-position hydraulic clamping structure according to any one of claims 1 to 6, 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-position hydraulic clamping structure according to claim 7 is 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.

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