Die locking mechanism of die-casting machine

Abstract

The utility model discloses a die locking mechanism of a die-casting machine, which belongs to the technical field of die-casting machines and comprises an upper die holder and a lower die holder, a top plate is arranged at the bottom of the upper die holder, a movable die is arranged at the bottom of the top plate, an air cylinder is arranged at the top of the upper die holder, a bottom plate is arranged at the top of the lower die holder, and a fixed die is arranged on the bottom plate. Two sets of mold locking devices are symmetrically arranged between the movable mold and the fixed mold, each mold locking device comprises a driving assembly arranged on the two sides of the movable mold and a mold locking clamping assembly arranged on the two sides of the fixed mold, guide sleeves are installed on the two sides of the upper mold base, and guide columns corresponding to the guide sleeves are installed on the lower mold base; the mold locking mechanism disclosed by the utility model has the advantages that the mold locking force is improved, high-temperature liquid is prevented from splashing to cause injury to personnel, and the product quality is ensured at the same time.

Description

Technical Field

[0001] The utility model relates to the technical field of die-casting machines, in particular to a die-casting machine locking mechanism. Background Art

[0002] A die-casting machine is a machine used for pressure casting. It consists of two types: a hot press chamber and a cold press chamber, both of which are further divided into vertical and horizontal types. Under pressure, the die-casting machine hydraulically injects molten metal into a mold, where it cools and forms the mold. After the mold is opened, a solid metal casting is obtained. With the advancement of science and technology and industrial production, the types of die-casting machines have increased, and their structures have become increasingly complex. The clamping mechanism, as the core component of the die-casting machine, generally uses a locking member to lock the fixed die and the moving die.

[0003] When the die-casting mold is closed, the die-casting machine generally provides the clamping force to press the movable mold and the fixed mold of the die-casting mold tightly. When the equipment runs for a long time, it will age, resulting in insufficient clamping force. When high-temperature liquid is injected into the mold, splashing will occur, which can easily cause burns to the operator and affect the quality of the product. Utility Model Content

[0004] In order to overcome the defects of the prior art, the technical problem to be solved by the present invention is to propose a clamping mechanism that improves the clamping force, avoids splashing of high-temperature liquid and causing injuries to personnel, and at the same time ensures product quality.

[0005] To achieve this purpose, the present invention adopts the following technical solutions:

[0006] The utility model provides a die-casting machine clamping mechanism, comprising an upper die base and a lower die base, wherein a top plate is provided at the bottom of the upper die base, a movable die is provided at the bottom of the top plate, and a cylinder is provided at the top of the upper die base, and the cylinder drives the upper die base to move;

[0007] A bottom plate is provided on the top of the lower mold base, a fixed mold is provided on the bottom plate, a clamping device is provided between the movable mold and the fixed mold, and two groups of the clamping devices are symmetrically provided. The clamping devices include driving components provided on both sides of the movable mold and clamping clamping components provided on both sides of the fixed mold. Guide sleeves are installed on both sides of the upper mold base, and guide columns are installed on the lower mold base corresponding to the guide sleeves.

[0008] The preferred technical solution of the present utility model is that the driving assembly includes a support seat arranged on both sides of the movable mold, a support column is provided at the bottom of the support seat, a locking guide seat is provided at the bottom of the support column, and a buffer device is provided on the support column.

[0009] The preferred technical solution of the present utility model is that the buffer device includes guide rods arranged on both sides of the bottom of the support seat, a buffer pressure plate is slidably connected to the support column, the guide rod passes through the buffer pressure plate and is slidably connected to it, a buffer spring is arranged between the support seat and the buffer pressure plate, and the buffer spring is sleeved on the guide rod.

[0010] The preferred technical solution of the present utility model is that the locking clamping assembly includes a locking seat arranged on both sides of the fixed mold, a locking cavity is opened on the locking seat, and locking templates adapted to the locking guide seat are connected to both sides of the inner wall of the locking cavity, and a limiting spring is arranged between the side of the two groups of locking templates away from each other and the inner wall of the locking cavity.

[0011] The preferred technical solution of the present invention is that clamping grooves are provided on both sides of the clamping guide seat, the clamping grooves are gradually reduced along the installation direction of the clamping guide seat, and a clamping end adapted to the clamping groove is provided on the side of the clamping plate close to the clamping guide seat.

[0012] The preferred technical solution of the present invention is that the bottom of the locking cavity is provided with a guide groove adapted to the rotation process of the locking templates on both sides, and a guide protrusion is provided at the connection between the two groups of the guide grooves, and the guide protrusion is installed on the bottom of the locking guide seat.

[0013] Compared with the prior art, the beneficial effects of the present invention are:

[0014] The cylinder drives the upper mold base to drive the clamping guide base to move along the direction of the lower mold base. The clamping guide base slides along the inner wall of the clamping cavity. During the movement, the clamping plates on both sides move away from each other. At this time, the pressure limit spring is compressed, and the limit spring reacts on the clamping plates on both sides, so that the clamping plates on both sides are clamped on both sides of the clamping guide base to achieve the clamping effect of the clamping plate on the clamping guide base. At the same time, the clamping ends on the clamping plate act on the clamping grooves on both sides of the clamping guide base, further improving the clamping force of the clamping plate on the clamping guide base, thereby improving the locking strength between the movable mold and the fixed mold, avoiding aging of the equipment due to long-term operation, reducing the clamping strength, and causing high-temperature liquid splashing and scalding of the operators, thereby improving the safety of operators on the job site and ensuring product quality;

[0015] In the process of the support seat driving the clamping cooperation between the clamping guide seat and the clamping plate, when the buffer pressure plate abuts against the clamping clamping assembly, the support seat drives the clamping guide seat to continue squeezing the clamping plates on both sides. At this time, the support seat squeezes the buffer spring and drives the guide rod to move downward. Under the action of the buffer spring, the impact force when the clamping guide seat and the clamping clamping assembly are locked is reduced, thereby reducing the wear on the clamping device and extending the service life of the equipment. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 This is a schematic diagram of the die-casting machine mold closing structure provided in a specific embodiment of the present utility model;

[0017] Figure 2 This is a schematic diagram of the working structure of the clamping mechanism provided in a specific embodiment of the present utility model;

[0018] Figure 3 This is a schematic diagram of the structure of the clamping mechanism before operation provided in a specific embodiment of the present utility model;

[0019] Figure 4 It is provided in the specific embodiment of the utility model Figure 3 A schematic diagram of the structure at center A;

[0020] In the accompanying drawings, the components represented by the reference numerals are as follows:

[0021] 1. Upper die base; 11. Top plate; 12. Cylinder; 2. Lower die base; 21. Bottom plate; 3. Guide sleeve; 4. Guide column; 5. Moving die; 6. Fixed die; 7. Clamping die clamping assembly; 71. Clamping die base; 72. Clamping die plate; 73. Clamping end; 74. Limit spring; 75. Guide protrusion; 76. Clamping die cavity; 77. Guide chute; 8. Drive assembly; 81. Support seat; 82. Guide rod; 83. Buffer pressure plate; 84. Buffer spring; 85. Clamping die guide seat; 86. Clamping groove; 87. Support column. DETAILED DESCRIPTION

[0022] The technical solution of the present invention will be further described below with reference to the accompanying drawings and through specific implementation methods.

[0023] A die-casting machine clamping mechanism includes an upper die base 1 and a lower die base 2. A top plate 11 is provided at the bottom of the upper die base 1, a movable die 5 is provided at the bottom of the top plate 11, and a cylinder 12 is provided at the top of the upper die base 1 to drive the upper die base 1 to move.

[0024] A bottom plate 21 is provided on the top of the lower die base 2, and a fixed die 6 is provided on the bottom plate 21. A clamping device is provided between the movable die 5 and the fixed die 6. Two groups of the clamping devices are symmetrically provided. The clamping devices include a driving assembly 8 provided on both sides of the movable die 5 and a clamping clamping assembly 7 provided on both sides of the fixed die 6. Guide sleeves 3 are installed on both sides of the upper die base 1, and guide columns 4 are installed on the lower die base 2 corresponding to the guide sleeves 3.

[0025] The cylinder 12 drives the upper die base 1 to drive the movable die 5 to move downward. At the same time, the upper die base 1 drives the guide sleeve 3 to slide downward along the guide column 4. The movement of the movable die 5 drives the driving components 8 on both sides to move downward. When the movable die 5 is pressed onto the top of the fixed die 6 under the action of the cylinder 12, the driving component 8 cooperates with the locking clamping component 7 and is locked in the locking clamping component 7, replacing the traditional die-casting machine to provide the locking force to press the movable die 5 and the fixed die 6 of the die-casting mold, thereby improving the locking force, avoiding aging of the equipment due to long-term operation, reducing the locking force, and causing high-temperature liquid to splash and scald the operator, thereby improving the safety of operators on the job site and ensuring product quality.

[0026] As a possible implementation of this scheme, preferably, the driving assembly 8 includes a support seat 81 arranged on both sides of the movable mold 5, a support column 87 is provided at the bottom of the support seat 81, a locking guide seat 85 is provided at the bottom of the support column 87, and a buffer device is provided on the support column 87. The movable mold 5 drives the support seats 81 on both sides to move downward, and the locking guide seat 85 moves inward corresponding to the locking clamping assembly 7 until the locking clamping assembly 7 is clamped on the locking guide seat 85, thereby realizing the locking effect of the locking device and ensuring the locking force and the operation quality of the product.

[0027] As a possible implementation of this scheme, preferably, the buffer device includes guide rods 82 arranged on both sides of the bottom of the support seat 81, and the support column 87 is slidably connected with a buffer pressure plate 83, and the guide rod 82 passes through the buffer pressure plate 83 and is slidably connected thereto. A buffer spring 84 is arranged between the support seat 81 and the buffer pressure plate 83, and the buffer spring 84 is sleeved on the guide rod 82, and the support seat 81 drives the clamping guide seat 85 to move downward through the support column 87. When the clamping guide seat 85 is passed into the interior of the clamping clamping assembly 7, the buffer pressure plate 83 abuts against the clamping clamping assembly 7, and the support seat 81 drives the clamping guide seat 85 to continue to move along the interior of the clamping clamping assembly 7 until it is clamped and locked with the clamping clamping assembly 7. During the movement of the support seat 81, the buffer spring 84 is squeezed and the guide rod 82 is driven downward. Under the action of the buffer spring 84, the impact force when the clamping guide seat 85 and the clamping clamping assembly 7 are locked is reduced, thereby reducing the wear on the clamping device and extending the service life of the equipment.

[0028] As a possible implementation of this scheme, preferably, the locking clamping assembly 7 includes a locking base 71 arranged on both sides of the fixed mold 6, and a locking cavity 76 is opened on the locking base 71. The locking templates 72 adapted to the locking guide seat 85 are connected to the inner walls of the locking cavity 76 on both sides. A limiting spring 74 is arranged between the inner wall of the locking cavity 76 and the two groups of locking templates 72 away from each other. Under the action of the cylinder 12, the locking guide seat 85 is driven to enter the locking cavity 76. During the movement, the locking templates 72 on both sides are moved away from each other and the limiting spring 74 is squeezed. At the same time, the limiting spring 74 reacts on the locking templates 72 on both sides, so that the locking templates 72 on both sides are clamped on both sides of the locking guide seat 85, so that the movable mold 5 and the fixed mold 6 are formed in a locked state, thereby improving the locking force between the movable mold 5 and the fixed mold 6, avoiding splashing of high-temperature liquid during the operation and scalding the operator, and ensuring the safety of the operation site and the production quality of the product.

[0029] As a possible implementation of this scheme, preferably, clamping grooves 86 are provided on both sides of the locking guide seat 85, and the clamping grooves 86 are gradually reduced along the installation direction of the locking guide seat 85. The locking template 72 is provided with a clamping end 73 adapted to the clamping groove 86 on the side close to the locking guide seat 85. During the sliding process of the locking guide seat 85 along the inner wall of the locking cavity 76, the locking templates 72 on both sides are squeezed away from each other until the clamping ends 73 on the locking template 72 are engaged with the clamping grooves 86 on both sides of the locking guide seat 85, thereby forming a clamping of the locking guide seat 85, so as to improve the locking effect between the fixed mold 6 and the movable mold 5, ensure the clamping force, and thus improve the production quality of the product.

[0030] As a possible implementation of this scheme, preferably, the bottom of the locking cavity 76 is provided with a guide groove 77 adapted to the rotation process of the locking templates 72 on both sides, and a guide protrusion 75 is provided at the connection between the two groups of the guide grooves 77. The guide protrusion 75 is installed at the bottom of the locking guide seat 85, and the guide protrusion 75 plays a guiding role to improve the engagement and clamping cooperation between the clamping end 73 and the clamping groove 86, thereby ensuring the locking force and locking effect of the locking device. The guide groove 77 is adapted to the motion range of the locking template 72 to improve the stability of the locking template 72 during the movement process.

[0031] The present invention is described through preferred embodiments. Those skilled in the art will appreciate that various changes or equivalent substitutions may be made to these features and embodiments without departing from the spirit and scope of the present invention. The present invention is not limited to the specific embodiments disclosed herein, and other embodiments falling within the scope of the claims of this application are also within the scope of protection of the present invention.

Claims

1. A die-casting machine clamping mechanism, characterized in that: It comprises an upper die base (1) and a lower die base (2), wherein a top plate (11) is provided at the bottom of the upper die base (1), a movable die (5) is provided at the bottom of the top plate (11), and a cylinder (12) is provided at the top of the upper die base (1), and the cylinder (12) drives the upper die base (1) to move; A bottom plate (21) is provided on the top of the lower die base (2), a fixed die (6) is provided on the bottom plate (21), a clamping device is provided between the movable die (5) and the fixed die (6), and two groups of the clamping devices are symmetrically provided, the clamping devices comprising a driving assembly (8) provided on both sides of the movable die (5) and a clamping clamping assembly (7) provided on both sides of the fixed die (6), guide sleeves (3) are installed on both sides of the upper die base (1), and guide pillars (4) are installed on the lower die base (2) corresponding to the guide sleeves (3).

2. The die-casting machine clamping mechanism according to claim 1, characterized in that: The driving assembly (8) comprises a support seat (81) arranged on both sides of the movable mold (5), a support column (87) is provided at the bottom of the support seat (81), a clamping guide seat (85) is provided at the bottom of the support column (87), and a buffer device is provided on the support column (87).

3. The die-casting machine clamping mechanism according to claim 2, characterized in that: The buffer device includes guide rods (82) arranged on both sides of the bottom of the support seat (81), a buffer pressure plate (83) is slidably connected to the support column (87), the guide rods (82) pass through the buffer pressure plate (83) and are slidably connected thereto, a buffer spring (84) is provided between the support seat (81) and the buffer pressure plate (83), and the buffer spring (84) is sleeved on the guide rods (82).

4. The die-casting machine clamping mechanism according to claim 1, characterized in that: The clamping assembly (7) includes a clamping seat (71) arranged on both sides of the fixed mold (6), a clamping cavity (76) is provided on the clamping seat (71), and locking plates (72) adapted to the clamping guide seat (85) are connected to both sides of the inner wall of the clamping cavity (76), and a limiting spring (74) is provided between the inner wall of the clamping cavity (76) and the side away from each other of the two sets of locking plates (72).

5. The die-casting machine clamping mechanism according to claim 4, characterized in that: Clamping grooves (86) are provided on both sides of the clamping guide seat (85), and the clamping grooves (86) decrease in size along the installation direction of the clamping guide seat (85). A clamping end (73) adapted to the clamping grooves (86) is provided on the side of the clamping plate (72) close to the clamping guide seat (85).

6. The die-casting machine clamping mechanism according to claim 4, characterized in that: The bottom of the clamping cavity (76) is provided with a guide chute (77) adapted to the rotation process of the clamping templates (72) on both sides, and a guide protrusion (75) is provided at the connection between the two groups of the guide chute (77), and the guide protrusion (75) is installed on the bottom of the clamping guide seat (85).

Images