Precise positioning structure for steel mold

Abstract

The utility model discloses an accurate positioning structure of a steel mould, which relates to the mould positioning field, and comprises a concave plate, the right end of the concave plate is provided with an adjusting part, a moving plate capable of sliding up and down is arranged between the left inner wall and the right inner wall of the concave plate, the upper end of the concave plate is provided with a lower mould plate, and the lower mould plate is provided with an upper mould plate. Guide rods are installed at the four corners of the upper end of the movable plate, the upper ends of the four guide rods are movably inserted into the upper side of a lower mold plate in a penetrating mode, the middles of the outer cylindrical surfaces of the four guide rods are fixedly sleeved with limiting rings, the upper portions of the outer cylindrical surfaces of the four guide rods are movably sleeved with upper mold plates, and guide sleeves are installed at the four corners of the lower end of each upper mold plate; and the guide sleeve is movably sleeved on the guide rod. The stroke distance of the upper male die can be adjusted through cooperation of the adjusting component, the guide rod and the limiting ring, the upper male die is prevented from moving excessively, the upper male die and the lower female die can make accurate contact, the situation of machining errors is avoided, and accuracy is improved.

Description

Technical Field

[0001] This utility model relates to the field of mold positioning, and in particular to a precise positioning structure for steel molds. Background Technology

[0002] Molds are various shapes and tools used in industrial production to obtain desired products through methods such as injection molding, blow molding, extrusion, die casting, forging, smelting, and stamping. In short, molds are tools used to create shaped objects. These tools are composed of various parts, and different molds are composed of different parts. They primarily achieve the shaping of objects by changing the physical state of the material being molded. Often called the "mother of industry," molds are tools that transform raw materials into parts with specific shapes and dimensions under external force. They are widely used in blanking, die forging, cold heading, extrusion, powder metallurgy pressing, pressure casting, and the production of engineering plastics, rubber, ceramics, and other products. In compression molding or injection molding, molds have specific contours or internal cavity shapes. Using the contour shape with cutting edges, the blank can be separated according to the contour line shape (punching). Using the internal cavity shape, the blank can obtain the corresponding three-dimensional shape. Molds generally consist of two parts: a moving mold and a fixed mold (or a punch and a die). The two can be separated and joined together. When separated, the part is removed. When joined together, the blank is injected into the mold cavity for forming. Molds are precision tools with complex shapes. They withstand the expansion force of the blank and have high requirements for structural strength, rigidity, surface hardness, surface roughness, and machining accuracy. The development level of mold production is one of the important indicators of the level of mechanical manufacturing.

[0003] Existing technology (publication number: CN 218134425 U) discloses a precision cold forming mold structure with good stability and precise positioning, relating to the field of mold technology. It includes a base, a mold component movably disposed inside the base, a hydraulic push rod disposed on the inner top side of the base, a support column disposed on the top of the base, a connecting cover plate disposed at the top of the support column, and a stamping mechanism penetrating through the interior of the connecting cover plate.

[0004] While the aforementioned patents can improve the effectiveness of mold-driven positioning and stamping shaping and enhance its usability, they have the following drawbacks: when changing to different lower dies and upper punches, the stroke of the upper die cannot be limited and positioned; the lack of control over the movement distance of the upper die may lead to processing errors; and excessive or uncontrolled movement distance of the upper punch may cause overload or damage to the equipment, requiring the replacement of mold equipment of other sizes, which increases the cost of use. Further improvements are needed. Therefore, we propose a precise positioning structure for steel molds. Utility Model Content

[0005] The main purpose of this utility model is to provide a precise positioning structure for steel molds, which can effectively solve the problems in the background art.

[0006] To achieve the above objectives, the technical solution adopted by this utility model is as follows:

[0007] A precision positioning structure for steel molds includes a concave plate. An adjusting component is installed at the right end of the concave plate. A movable plate that can slide up and down is provided between the left and right inner walls of the concave plate. A lower template is installed at the upper end of the concave plate. Guide rods are installed at the four corners of the upper end of the movable plate. The upper ends of the four guide rods are movably inserted into the upper side of the lower template. A limiting ring is fixedly sleeved on the middle of the outer cylindrical surface of each of the four guide rods. An upper template is movably sleeved on the upper part of the outer cylindrical surface of each of the four guide rods. Guide sleeves are installed at the four corners of the lower end of the upper template and are movably sleeved on the guide rods. A contact sensor is installed at the lower end of each of the four limiting rings. The measuring end of the contact sensor extends to the upper end of the limiting ring. An upper punch and a lower die are respectively installed at the ends of the upper and lower templates that are close to each other.

[0008] Preferably, a convex block is installed between the two limiting rings on the left and between the two guide sleeves on the left. A displacement sensor is installed at the lower end of the lower convex block. The measuring end of the displacement sensor movably passes through the upper end of the lower convex block and is fixedly connected to the lower end of the upper convex block.

[0009] Preferably, the adjusting component includes a motor, which is installed at the right end of the concave plate. The output end of the motor extends into the concave plate and is fixedly connected to a worm gear. The worm gear has four worm wheels arranged in a rectangular array meshing with its threads. Each of the four worm wheels has a lead screw fixedly sleeved inside it.

[0010] Preferably, the lower ends of the four lead screws are movably connected to the lower wall of the concave plate, and the upper ends of the lead screws are threaded through the upper side of the movable plate and movably connected to the lower end of the lower template.

[0011] Preferably, the guide sleeve is located above the limiting ring.

[0012] Preferably, the left end of the lead screw is movably connected to the left inner wall of the concave plate.

[0013] Compared with the prior art, the present invention has the following beneficial effects:

[0014] 1. By setting up adjustment components, guide rods, and limit rings in concert, the stroke distance of the upper punch can be adjusted. When changing to upper punches and lower dies of different thicknesses, the distance between the upper punch and lower die is used to control the motor to drive the worm gear to rotate, the worm gear to rotate the worm wheel, the worm wheel to rotate the lead screw, and the lead screw to adjust the position of the guide rod through the moving plate. The guide rod then adjusts the distance between the limit ring and the guide sleeve, thereby adjusting the distance the upper die moves with the upper template. This prevents the upper punch from moving excessively, ensuring that the upper punch and lower die can make accurate contact, avoiding processing errors and improving accuracy. At the same time, by setting up a contact sensor, it can detect whether the guide sleeve is in contact with the limit ring. When they are in contact, an electrical signal is generated, and the controller controls the hydraulic cylinder to stop applying pressure to the upper punch, avoiding overload or damage to the equipment. No other equipment needs to be replaced, thus improving the applicability of the mold.

[0015] 2. By setting up a convex block and a displacement sensor, the distance between the limit ring and the guide sleeve can be easily determined. When the limit ring moves, the convex block on the lower side drives the displacement sensor to move, causing the measuring end of the displacement sensor to change, thus measuring the distance between the limit ring and the guide sleeve. This allows the staff to quickly adjust the limit ring and improves work efficiency. Attached Figure Description

[0016] Figure 1 This is a schematic diagram of the entire structure presented in this embodiment;

[0017] Figure 2 This is a schematic diagram of another viewpoint in this embodiment;

[0018] Figure 3 This is an enlarged structural diagram of point A in this embodiment;

[0019] Figure 4 This is a schematic diagram of the adjustment component in this embodiment.

[0020] In the diagram: 1. Concave plate; 2. Adjusting component; 3. Moving plate; 4. Guide rod; 5. Upper template; 6. Guide sleeve; 7. Upper punch; 8. Lower die; 9. Lower template; 10. Limiting ring; 11. Convex block; 12. Displacement sensor; 13. Contact sensor; 21. Motor; 22. Worm gear; 23. Worm wheel; 24. Lead screw. Detailed Implementation

[0021] To make the technical means, creative features, objectives and effects of this utility model easier to understand, the present utility model will be further described below in conjunction with specific embodiments.

[0022] In the description of this utility model, it should be noted that the terms "upper," "lower," "inner," "outer," "front end," "rear end," "both ends," "one end," and "the other end," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are used only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model. In addition, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance.

[0023] In the description of this utility model, it should be noted that, unless otherwise explicitly specified and limited, the terms "installed," "equipped with," and "connected," etc., should be interpreted broadly. For example, "connected" can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium; it can be a connection within two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances.

[0024] like Figures 1-4 As shown, a steel mold precision positioning structure includes a concave plate 1, an adjusting component 2 installed at the right end of the concave plate 1, a movable plate 3 that can slide up and down is provided between the left and right inner walls of the concave plate 1, a lower template 9 is installed at the upper end of the concave plate 1, guide rods 4 are installed at the four corners of the upper end of the movable plate 3, the upper ends of the four guide rods 4 are movably inserted into the upper side of the lower template 9, a limiting ring 10 is fixedly sleeved in the middle of the outer cylindrical surface of the four guide rods 4, an upper template 5 is movably sleeved on the upper part of the outer cylindrical surface of the four guide rods 4, and a limiting ring 10 is fixedly sleeved at the four corners of the lower end of the upper template 5. The guide sleeve 6 is movably fitted onto the guide rod 4. The lower ends of the four limiting rings 10 are all equipped with contact sensors 13. The contact sensors 13 are existing technology. The measuring end of the contact sensors 13 extends to the upper end of the limiting rings 10. The upper mold 7 and the lower mold 8 are respectively installed at the ends of the upper mold 5 and the lower mold 9 that are close to each other. When the guide sleeve 6 contacts the measuring end of the contact sensor 13, the contact sensor 13 sends a signal to the controller. The adjusting component 2, the guide rod 4 and the limiting rings 10 work together to adjust the stroke distance of the upper mold 7.

[0025] To facilitate understanding the distance between the limiting ring 10 and the guide sleeve 6, a convex block 11 and a displacement sensor 12 are used to measure the distance. A convex block 11 is installed between the two left limiting rings 10 and between the two left guide sleeves 6. A displacement sensor 12 is installed at the lower end of the lower convex block 11. The displacement sensor 12 is a prior art technology. The measuring end of the displacement sensor 12 moves through the upper end of the lower convex block 11 and is fixedly connected to the lower end of the upper convex block 11. When the limiting ring 10 moves, the displacement sensor 12 moves through the lower convex block 11, causing the measuring end of the displacement sensor 12 to change. The displacement sensor 12 sends a signal to the controller to obtain data.

[0026] The adjusting component 2 includes a motor 21, which is installed at the right end of the concave plate 1. The output end of the motor 21 extends into the concave plate 1 and is fixedly connected to a worm 22. The worm 22 has four worm wheels 23 arranged in a rectangular array meshing with its thread. The worm 22 and the worm wheels 23 are self-locking. Each of the four worm wheels 23 has a lead screw 24 fixedly sleeved inside. The adjusting component 2 is used to adjust the height of the moving plate 3.

[0027] The lower ends of the four lead screws 24 are movably connected to the lower wall of the concave plate 1. The lead screws 24 are movably connected to the concave plate 1 through bearings. The upper ends of the lead screws 24 are threaded through the upper side of the movable plate 3 and movably connected to the lower end of the lower template 9. The lead screws 24 are used to drive the movable plate 3 to move up and down.

[0028] The guide sleeve 6 is located above the limiting ring 10. The left end of the lead screw 24 is movably connected to the left inner wall of the concave plate 1. The lead screw 24 is movably connected to the concave plate 1 through a bearing.

[0029] This utility model proposes a precise positioning structure for steel molds. In use, the concave plate 1 is fixed in a designated position, and the upper template 5 is fixedly connected to the output end of the hydraulic cylinder. When replacing the upper punch 7 and lower die 8 with different thicknesses, the new upper punch 7 and lower die 8 are installed on the upper template 5 and lower template 9. Based on the distance between the upper punch 7 and lower die 8, the motor 21 drives the worm gear 22 to rotate, the worm gear 22 drives the worm wheel 23 to rotate, the worm wheel 23 drives the lead screw 24 to rotate, and the lead screw 24 then adjusts the position of the guide rod 4 via the moving plate 3. The guide rod 4 then adjusts the distance between the limiting ring 10 and the guide sleeve 6, so that the distance between the limiting ring 10 and the guide sleeve 6 is equal to the distance between the upper punch 7 and the lower die 8. This allows for adjustment of the distance the upper template 5 moves, driving the upper punch 7 to move, preventing excessive movement of the upper punch, ensuring accurate contact between the upper punch 7 and the lower die 8, avoiding processing errors, and improving accuracy. Simultaneously, a contact sensor 13 detects whether the guide sleeve 6 is in contact with the limit ring 10. When in contact, an electrical signal is generated, and the controller stops the hydraulic cylinder from applying pressure to the upper punch 7. When the limit ring 10 moves, the two limit rings 10 on the left side move through the lower convex block 11, causing the measuring end of the displacement sensor 12 to change, thus measuring the distance between the limit ring 10 and the guide sleeve 6, facilitating quick adjustment of the limit ring 10 by the operator.

[0030] It is worth noting that the entire device is connected to a power supply and a main control button, which controls the device. Since the device matched with the control button is a common device and belongs to existing mature technology, its electrical connection relationship and specific circuit structure will not be described in detail here.

[0031] The foregoing has shown and described the basic principles, main features, and advantages of this utility model. Those skilled in the art should understand that this utility model is not limited to the above embodiments. The embodiments and descriptions in the specification are merely illustrative of the principles of this utility model. Various changes and modifications can be made to this utility model without departing from its spirit and scope, and all such changes and modifications fall within the scope of the claims. The scope of protection of this utility model is defined by the appended claims and their equivalents.

Claims

1. A steel mold precision positioning structure, comprising a concave plate (1), characterized in that: The right end of the concave plate (1) is provided with an adjusting component (2); a movable plate (3) which can slide up and down is provided between the left inner wall and the right inner wall of the concave plate (1); a lower template (9) is provided at the upper end of the concave plate (1); guide rods (4) are provided at the four corners of the upper end of the movable plate (3); the upper ends of the four guide rods (4) are movably inserted into the upper side of the lower template (9); the middle parts of the outer cylindrical surfaces of the four guide rods (4) are fixedly sleeved with a limiting ring (10); An upper mold plate (5) is movably sleeved on the upper part of the outer cylindrical surface of the rod (4); guide sleeves (6) are installed at the four corners of the lower end of the upper mold plate (5); the guide sleeves (6) are movably sleeved on the guide rod (4); contact sensors (13) are installed at the lower ends of the four limit rings (10); the measuring ends of the contact sensors (13) extend to the upper ends of the limit rings (10); and an upper convex mold (7) and a lower concave mold (8) are installed at the ends of the upper mold plate (5) and the lower mold plate (9) that are close to each other.

2. The steel mold precise positioning structure according to claim 1, characterized in that: A convex block (11) is installed between the two limit rings (10) on the left side and between the two guide sleeves (6) on the left side. A displacement sensor (12) is installed at the lower end of the lower convex block (11). The measuring end of the displacement sensor (12) movably passes through the upper end of the lower convex block (11) and is fixedly connected to the lower end of the upper convex block (11).

3. The steel mold precise positioning structure according to claim 1, characterized in that: The adjusting component (2) comprises a motor (21), the motor (21) being mounted at the right end of the concave plate (1), the output end of the motor (21) extending into the concave plate (1) and being fixedly connected to a worm (22), the thread of the worm (22) being meshedly connected to four worm wheels (23) distributed in a rectangular array, and the interiors of the four worm wheels (23) are all fixedly sleeved with screw rods (24).

4. The steel mold precise positioning structure according to claim 3 is characterized by: The lower ends of the four screw rods (24) are movably connected to the lower wall of the concave plate (1), and the upper ends of the screw rods (24) are threadedly inserted into the upper side of the movable plate (3) and movably connected to the lower end of the lower template (9).

5. The steel mold precise positioning structure according to claim 1, characterized in that: The guide sleeve (6) is located above the limiting ring (10).

6. The steel mold precise positioning structure according to claim 3, characterized in that: The left end of the screw rod (24) is movably connected to the left inner wall of the concave plate (1).

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