A wear-resistant insert structure of an electric tool gear box die-casting mold

Abstract

The utility model relates to die casting mould technical field discloses a kind of wear-resistant insert structure of electric tool gear box die casting mould, including left template and right template, the side of left template is clamped with movable insert block, the side of right template is clamped with fixed insert block, fixed insert block is sleeved in the inside of fixed insert block, the both sides of movable insert block are all sleeved with gas cavity, the inside of gas cavity is slidably connected with sliding assembly, the side of movable insert block and right template is all sleeved with four groups of locating seat, the inside of locating seat is inserted with limiting component, the surface of movable insert block is provided with movable insert piece, the sliding assembly includes sliding block that slidingly connects in the inside of gas cavity.The wear-resistant insert structure of electric tool gear box die casting mould, by the setting of gas cavity and sliding assembly, can effectively eliminate the vacuum adsorption effect between casting and movable insert block, reduce the surface microcrack or wear caused by metal friction, improve the service life of insert block.

Description

Technical Field

[0001] This utility model relates to the field of die casting mold technology, and in particular to a wear-resistant insert structure for a die casting mold of a power tool gearbox. Background Technology

[0002] The wear-resistant insert structure of the gearbox die-casting mold for power tools is a very important part of the gearbox die-casting mold. It is mainly used to improve the service life of the mold and reduce the replacement frequency caused by frequent wear. The wear-resistant insert is usually made of high hardness and high wear resistance materials, such as alloy steel, cast iron or materials with hard alloy layer.

[0003] Patent document CN205673564U discloses an insert structure for a die-casting mold, including a moving mold core, a moving insert adapted to the moving mold core, a fixed mold core, and a fixed insert adapted to the fixed mold core. The fixed insert is characterized by having a fixed insert, and the moving insert having at least one set of opposite sides that are inclined surfaces or all sides that are vertical surfaces. The moving insert is further characterized by having a moving insert, and the moving insert is composed of multiple moving inserts, each of which is connected to the moving insert by a fastening bolt. The advantages of this invention are significant: simple and stable structure, low cost, short development cycle, high production efficiency, wide application range, and convenient installation, disassembly, and replacement.

[0004] However, the wear-resistant insert structure of existing power tool gearbox die-casting molds is prone to increasing surface micro-cracks or wear due to the vacuum adsorption effect between the casting and the insert during use, which reduces the service life of the insert. Utility Model Content

[0005] (a) Technical problems to be solved

[0006] The purpose of this utility model is to provide a wear-resistant insert structure for a die-casting mold of a power tool gearbox, so as to solve the problem mentioned in the background art that the vacuum adsorption effect between the casting and the insert during use easily increases metal friction, resulting in surface micro-cracks or wear, and reduces the service life of the insert.

[0007] (II) Technical Solution

[0008] To achieve the above objectives, this utility model provides the following technical solution: a wear-resistant insert structure for a die-casting mold of a power tool gearbox, comprising a left template and a right template. A movable insert is engaged on one side of the left template, and a fixed insert is engaged on one side of the right template. A fixed insert is fitted inside the fixed insert. Air chambers are fitted on both sides of the movable insert. A sliding assembly is slidably connected inside the air chamber. Four sets of positioning seats are fitted on one side of both the movable insert and the right template. Limiting components are inserted inside the positioning seats. A movable insert is provided on the surface of the movable insert. The sliding assembly includes a sliding block slidably connected inside the air chamber. A sealing plate is fixedly connected to one end of the sliding block, and a supporting spring is fixedly connected to the other end of the sliding block. The limiting assembly includes a rod inserted inside the positioning seat. Two sets of locking blocks are fixedly connected to one end of the rod. A positioning ring is fitted on the surface of the rod, and a telescopic spring is fixedly connected to one side of the positioning ring.

[0009] As a further embodiment of this utility model, a push rod is slidably connected to one side of the air chamber, and a groove adapted to the push rod is provided on the surface of the sliding block. The groove facilitates the push rod to push the sliding block.

[0010] As a further embodiment of this utility model, a connecting nozzle is provided on one side of the air chamber, and an opening groove adapted to the sealing plate is provided on the other side of the air chamber. The opening groove facilitates the entry of gas.

[0011] As a further embodiment of this utility model, the left template has several sets of ejector pins slidably connected inside, and a push plate is fixedly connected to one side of each ejector pin. The push plate drives the ejector pin.

[0012] As a further embodiment of this utility model, a hydraulic push rod is fixedly connected to one side of the push plate, and four sets of buffers are fixedly connected to the other side of the push plate. The buffers reduce the squeezing impact of the push plate.

[0013] As a further embodiment of this utility model, the top of both the left and right templates are fixedly connected with lifting rings, and cooling pipes are provided inside both the left and right templates. The cooling pipes accelerate the cooling process.

[0014] As a further embodiment of this utility model, a support base is fixedly connected to one side of the left template, and a support wall is fixedly connected to one side of the support base. The support wall provides support for the support base.

[0015] As a further embodiment of this utility model, four sets of positioning columns are fixedly connected to one side of the support wall, and a support plate is slidably connected to one end of each positioning column. The support plate provides support for the right template.

[0016] (III) Beneficial Effects

[0017] This utility model provides a wear-resistant insert structure for a die-casting mold of a power tool gearbox, which has the following beneficial effects:

[0018] 1. The wear-resistant insert structure of the power tool gearbox die-casting mold, through the setting of the air chamber and sliding components, allows for the connection of the air nozzle on the air chamber to an external air pressure device during use. When the die-casting mold is closed, the fixed insert squeezes the push rod, causing one end of the push rod to squeeze the groove on the sliding block, thereby pushing the sliding block to slide inside the air chamber and pushing the sealing plate to close the opening slot of the air chamber, automatically closing the air chamber opening. Then, at the moment of mold opening, the support spring returns to its original position, and the support spring pulls the sliding block to open the opening of the air chamber, allowing high-pressure gas to be blown into the gap between the casting and the moving insert to form an air cushion layer. At the same time, the ejector pin pushes the casting out. This time-controlled gas intervention can effectively eliminate the vacuum adsorption effect between the casting and the moving insert, reduce surface micro-cracks or wear caused by metal friction, and improve the service life of the insert.

[0019] 2. The wear-resistant insert structure of the power tool gearbox die-casting mold, through the setting of the limiting component, when it is necessary to replace the moving insert or the fixed insert, press the insert rod, so that the positioning ring squeezes the telescopic spring, the telescopic spring is compressed by force, the insert rod goes into the positioning seat, and then the insert rod drives the locking block to disengage from the locking groove in the positioning seat, and rotate the insert rod to pull it out from the inside of the positioning seat, thereby achieving the effect of quick disassembly and assembly of the insert, reducing the disassembly and assembly steps, and significantly improving the maintenance efficiency of the mold. Attached Figure Description

[0020] Figure 1 This is a schematic diagram of the overall structure of this utility model;

[0021] Figure 2 This is a schematic diagram of the disassembled structure of this utility model;

[0022] Figure 3 This is a schematic diagram of the moving insert, fixed insert, and fixed insert structure of this utility model;

[0023] Figure 4 This is a schematic diagram of the air chamber and sliding assembly structure of this utility model;

[0024] Figure 5 This is a schematic diagram of the limiting component structure of this utility model.

[0025] In the diagram: 1. Left template; 2. Right template; 3. Moving insert; 4. Fixed insert; 5. Air chamber; 6. Sliding assembly; 601. Sliding block; 602. Sealing plate; 603. Support spring; 7. Positioning seat; 8. Limiting assembly; 801. Insert rod; 802. Locking block; 803. Positioning ring; 804. Telescopic spring; 9. Moving insert; 10. Push rod; 11. Connecting air nozzle; 12. Ejector pin; 13. Push plate; 14. Hydraulic push rod; 15. Buffer; 16. Lifting ring; 17. Support seat; 18. Support wall; 19. Positioning column; 20. Support plate; 21. Fixed insert. Detailed Implementation

[0026] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. All other embodiments obtained by those skilled in the art based on the embodiments of the present utility model without creative effort are within the scope of protection of the present utility model.

[0027] Please see Figures 1 to 5 This utility model provides a technical solution: a wear-resistant insert structure for a die-casting mold of a power tool gearbox, including a left template 1 and a right template 2. A movable insert 3 is snapped onto one side of the left template 1, and a fixed insert 21 is snapped onto one side of the right template 2. A fixed insert 4 is sleeved inside the fixed insert 21. Air chambers 5 are sleeved on both sides of the movable insert 3. A push rod 10 is slidably connected to one side of the air chamber 5. A sliding block 601 has a groove on its surface that matches the push rod 10, which facilitates the push rod 10 to push the sliding block 601. A connecting air nozzle 11 is provided on one side of the air chamber 5, and an opening groove that matches the sealing plate 602 is provided on the other side of the air chamber 5, which facilitates the entry of gas. A sliding component 6 is slidably connected inside the air chamber 5. Through the arrangement of the air chamber 5 and the sliding component 6, this time-controlled gas intervention can effectively eliminate the casting... The vacuum adsorption effect between the insert and the moving insert 3 reduces surface micro-cracks or wear caused by metal friction, thus improving the service life of the insert. Four sets of positioning seats 7 are fitted on one side of both the moving insert 3 and the right template 2. Limiting components 8 are inserted inside the positioning seats 7. The setting of the limiting components 8 achieves the effect of quick disassembly and assembly of the insert, reducing the disassembly and assembly steps and significantly improving the maintenance efficiency of the mold. The surface of the moving insert 3 is provided with a moving insert 9. The sliding component 6 includes a sliding block 601 that is slidably connected inside the air chamber 5. One end of the sliding block 601 is fixedly connected to a sealing plate 602, and the other end of the sliding block 601 is fixedly connected to a support spring 603. The limiting component 8 includes a rod 801 that is inserted inside the positioning seat 7. One end of the rod 801 is fixedly connected to two sets of locking blocks 802. The surface of the rod 801 is fitted with a positioning ring 803, and one side of the positioning ring 803 is fixedly connected to a telescopic spring 804.

[0028] Furthermore, several sets of ejector pins 12 are slidably connected inside the left template 1. A push plate 13 is fixedly connected to one side of each ejector pin 12, which drives the ejector pin 12. A hydraulic push rod 14 is fixedly connected to one side of the push plate 13, and four sets of buffers 15 are fixedly connected to the other side of the push plate 13, which reduces the squeezing impact of the push plate 13. Both the left template 1 and the right template 2 are fixedly connected to the top of a lifting ring 16. Cooling pipes are installed inside both the left template 1 and the right template 2, which accelerates cooling. A support base 17 is fixedly connected to one side of the left template 1, and a support wall 18 is fixedly connected to one side of the support base 17, which provides support for the support base 17. Four sets of positioning columns 19 are fixedly connected to one side of the support wall 18, and a support plate 20 is slidably connected to one end of each positioning column 19, which provides support for the right template 2.

[0029] In this invention, the working steps of the device are as follows:

[0030] First step: When in use, connect the connecting air nozzle 11 on the air chamber 5 to an external air pressure device. When the die-casting mold is closed, the fixed insert 4 squeezes the push rod 10, so that one end of the push rod 10 squeezes the groove on the sliding block 601, thereby pushing the sliding block 601 to slide inside the air chamber 5 and pushing the sealing plate 602 to close the opening slot of the air chamber 5, automatically closing the opening of the air chamber 5. Then, at the moment of mold opening, the support spring 603 resets. The support spring 603 pulls the sliding block 601 to restore its deformation, opening the opening of the air chamber 5, so that high-pressure gas is blown into the gap between the casting and the moving insert 3 to form an air cushion layer. At the same time, the ejector pin 12 pushes the casting out.

[0031] Second step: When it is necessary to replace the moving insert 3 or the fixed insert 4, press the insert rod 801, so that the positioning ring 803 squeezes the telescopic spring 804, the telescopic spring 804 is compressed by force, the insert rod 801 goes deep into the positioning seat 7, and then the insert rod 801 drives the locking block 802 to disengage from the locking groove in the positioning seat 7, and rotate the insert rod 801 to pull it out from the inside of the positioning seat 7.

[0032] It should be noted that the device structure and accompanying drawings of this utility model mainly describe the principle of this utility model. In terms of the technical aspects of this design principle, the setting of the power mechanism, power supply system and control system of the device is not fully described. However, under the premise that those skilled in the art understand the principle of the above utility model, the specific details of its power mechanism, power supply system and control system can be clearly understood. The control method in the application document is automatic control through a controller. The control circuit of the controller can be implemented by those skilled in the art through simple programming.

[0033] All standard parts used can be purchased from the market, and can be customized according to the instructions and drawings. The specific connection methods of each part adopt conventional methods such as bolts, rivets, and welding that are mature in the existing technology. The machinery, parts and equipment adopt conventional models in the existing technology, and the structure and principle of the components known to those skilled in the art can be known by those skilled in the art through technical manuals or conventional experimental methods.

[0034] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A wear-resistant insert structure for a die-casting mold of a power tool gearbox, comprising a left template (1) and a right template (2), characterized in that: A movable insert (3) is snapped onto one side of the left template (1), and a fixed insert (21) is snapped onto one side of the right template (2). A fixed insert (4) is fitted inside the fixed insert (21). Air chambers (5) are fitted onto both sides of the movable insert (3). A sliding component (6) is slidably connected inside the air chambers (5). Four sets of positioning seats (7) are fitted onto one side of both the movable insert (3) and the right template (2). A limit component (8) is inserted inside the positioning seats (7). A movable insert (9) is provided on the surface of the movable insert (3). The sliding assembly (6) includes a sliding block (601) slidably connected to the inside of the air chamber (5). One end of the sliding block (601) is fixedly connected to a sealing plate (602), and the other end of the sliding block (601) is fixedly connected to a support spring (603). The limiting component (8) includes a rod (801) inserted into the positioning seat (7). One end of the rod (801) is fixedly connected to two sets of locking blocks (802). A positioning ring (803) is sleeved on the surface of the rod (801). A telescopic spring (804) is fixedly connected to one side of the positioning ring (803).

2. The wear-resistant insert structure of a die-casting mold for a power tool gearbox according to claim 1, characterized in that: A push rod (10) is slidably connected to one side of the air chamber (5), and a sliding groove adapted to the push rod (10) is opened on the surface of the sliding block (601).

3. The wear-resistant insert structure of a die-casting mold for a power tool gearbox according to claim 1, characterized in that: One side of the air chamber (5) is provided with a connecting air nozzle (11), and the other side of the air chamber (5) is provided with an opening groove that is compatible with the sealing plate (602).

4. The wear-resistant insert structure of a die-casting mold for a power tool gearbox according to claim 1, characterized in that: The left template (1) has several sets of ejector pins (12) slidably connected inside, and a push plate (13) is fixedly connected to one side of the ejector pin (12).

5. The wear-resistant insert structure of a die-casting mold for a power tool gearbox according to claim 4, characterized in that: A hydraulic push rod (14) is fixedly connected to one side of the push plate (13), and four sets of buffers (15) are fixedly connected to the other side of the push plate (13).

6. The wear-resistant insert structure of a die-casting mold for a power tool gearbox according to claim 1, characterized in that: The top of both the left template (1) and the right template (2) are fixedly connected with lifting rings (16), and cooling pipes are provided inside both the left template (1) and the right template (2).

7. The wear-resistant insert structure of a die-casting mold for a power tool gearbox according to claim 1, characterized in that: A support base (17) is fixedly connected to one side of the left template (1), and a support wall (18) is fixedly connected to one side of the support base (17).

8. The wear-resistant insert structure of a die-casting mold for a power tool gearbox according to claim 7, characterized in that: Four sets of positioning columns (19) are fixedly connected to one side of the support wall (18), and a support plate (20) is slidably connected to one end of the positioning column (19).

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