High-precision mold automatic calibration device

Abstract

The utility model discloses a high accuracy mould automatic calibration device, including bottom plate, top plate and flat plate, the top of bottom plate is provided with fixed die seat, and the both sides of bottom plate's top are provided with guide rod, the bottom of top plate is provided with movable die seat, and the bottom of movable die seat is provided with upper plate, and the bottom of upper plate is provided with movable module, the utility model discloses the cooperation of calibration cylinder and guide rod in calibration limiting mechanism, and the supplementary calibration and buffer effect of spring can ensure that movable module moves to the inside of forming mould accurately, and the precision of mould calibration has been improved, through the installation slot and mounting screw hole design inside top plate and bottom plate, movable die seat and fixed die seat can be better installed and connected on the surface of top plate and bottom plate, form double mould, improve production efficiency, through the exhaust hole on the surface of fixed die seat, the gas produced in the forming process can be discharged in time, effectively avoid the bubble, the cavity and other defects in the inside of forming product, improve the market competitiveness of product.

Description

Technical Field

[0001] This utility model relates to the field of mold technology, specifically to a high-precision automatic mold calibration device. Background Technology

[0002] A mold is a tool used in industrial production to shape a blank into a part with a specific shape and size under the action of external force. It mainly achieves the processing of the shape of the object by changing the physical state of the material being molded. Molds have specific contours or internal cavity shapes.

[0003] In the existing technology, traditional mold calibration devices usually adopt simple mechanical guiding structures, such as simple guide pillars, and lack effective buffering and automatic calibration mechanisms. The moving module mainly relies on the rigid cooperation of the mechanical structure to achieve positioning during the movement process.

[0004] Because traditional mold calibration devices have simple guiding structures, lacking the precise fit of a calibration cylinder and guide rod, and lacking the auxiliary calibration and buffering effect of springs, the moving module is easily affected by external interference (such as equipment vibration, unstable power output, etc.) during movement, causing it to deviate and making it difficult to accurately position itself inside the forming mold. This results in low mold calibration accuracy, a high scrap rate, and low production efficiency. In actual production, switching from single-mold stamping to double-mold stamping (or vice versa) not only requires a lot of time for mold disassembly and replacement, but also requires meticulous adjustment and debugging of the new mold to ensure stamping accuracy and product quality. This process is not only complex and cumbersome, but also significantly prolongs mold changeover time, thereby reducing overall production efficiency, decreasing output, and increasing production costs.

[0005] In light of this, we have launched a high-precision automatic mold calibration device. Utility Model Content

[0006] The purpose of this invention is to provide a high-precision automatic mold calibration device to solve the problems mentioned in the background art.

[0007] To achieve the above objectives, this utility model provides the following technical solution: a high-precision automatic mold calibration device, comprising: a base plate, a top plate, and a flat plate;

[0008] A fixed mold base is provided on the top of the base plate, and guide rods are provided on both sides of the top of the base plate;

[0009] The bottom of the top plate is provided with a moving mold base, the bottom of the moving mold base is provided with an upper plate, and the bottom of the upper plate is provided with a moving module.

[0010] The flat plate is disposed on the top of the fixed mold base, the top of the flat plate is provided with a positioning plate, and the top of the positioning plate is provided with a forming mold.

[0011] A calibration limiting mechanism is provided between the bottom plate and the top plate. The calibration cylinder of the calibration limiting mechanism slides on the surface of the guide rod to make the actuating module move precisely into the interior of the molding mold.

[0012] Preferably, the calibration limiting mechanism includes a limiting block connected to the top of the plate, the calibration cylinder slidably attached to the surface of the guide rod, and a spring located at the bottom of the limiting block is sleeved on the surface of the guide rod. The limiting block provides support for the spring, which is sleeved on the guide rod and located between the positioning part formed by the bottom of the limiting block and the surface of the guide rod. When the top plate and the moving mold base move downward, the calibration cylinder pushes the spring to compress. The spring force can buffer the contact impact between the moving mold base and the forming mold, and at the same time provide a restoring force when the mold opens, ensuring that the calibration cylinder always maintains a tight fit with the guide rod and maintains the calibration accuracy.

[0013] Preferably, the molding mold has a molding cavity inside, which is the working space for the compression molded product. Its shape and size are precisely machined according to the product design requirements. The surface roughness of the inner wall is extremely low, and it may also be electroplated or coated to improve wear resistance and demolding properties. The precision of the molding cavity directly affects the dimensional accuracy and appearance quality of the product. Therefore, it needs to be manufactured using precision machining equipment (such as CNC milling machines and EDM machines) and undergo strict testing (such as coordinate measuring machine) to ensure that it meets the design requirements.

[0014] Preferably, the top plate and the bottom plate have mounting grooves inside, and the top of the mounting groove has mounting screw holes.

[0015] Preferably, the surface of the fixed mold base is provided with vent holes, which penetrate the fixed mold base and the flat plate and connect to the molding cavity. The function of the vent holes is to discharge the air and gas generated by the molding material in the molding cavity during the mold closing and injection process, so as to avoid defects such as bubbles, material shortage or surface defects in the product caused by gas retention. The diameter and position of the vent holes are designed according to the molding process and product structure, and are usually set at the highest point of the molding cavity or in the part where gas is easy to accumulate, to ensure smooth venting.

[0016] Preferably, the calibration cylinder is fixedly connected to both sides of the top of the top plate. The calibration cylinder is fixed to both sides of the top of the top plate by screws or welding, corresponding one-to-one with the guide rod, to ensure that the top plate is guided by the calibration cylinders on both sides during movement, avoiding skewing. The axis of the calibration cylinder and the axis of the guide rod must be strictly coaxial. During installation, it is necessary to calibrate with a precision measuring tool (such as a dial indicator) to ensure the matching accuracy of the two, thereby ensuring the movement accuracy of the moving module.

[0017] Preferably, the guide rod and the limiting block are connected by bolts. The bottom of the guide rod is inserted into the slot of the base plate and fixed by screws or other means. The guide rod and the limiting block are locked together by bolts. This installation method facilitates the disassembly and maintenance of the limiting block.

[0018] Preferably, the base plate has slots on both sides for mounting guide rods. The slots are located on both sides of the base plate, and their depth and width are designed according to the size of the guide rods to accommodate the bottom of the guide rods and provide installation space for the guide rods. After the bottom of the guide rods is inserted into the slots, they are connected to the base plate by screws or other fixing methods to ensure that the guide rods are firmly installed and perpendicular to the base plate, thereby providing a precise guiding reference for the entire calibration and limiting mechanism. The machining accuracy of the slots must match the installation requirements of the guide rods to ensure the verticality and stability of the guide rods after installation.

[0019] Compared with the prior art, the beneficial effects of this utility model are:

[0020] (1) By cooperating with the calibration cylinder and guide rod in the calibration limit mechanism, as well as the auxiliary calibration and buffering effect of the spring, the moving module can be accurately moved into the mold, which improves the accuracy of mold calibration, thereby ensuring the dimensional accuracy and quality consistency of the molded products, reducing the scrap rate caused by inaccurate calibration, and improving production efficiency and economic benefits.

[0021] (2) Through the design of the mounting groove and mounting screw hole inside the top plate and bottom plate, the moving mold base and the fixed mold base can be better installed and connected on the surface of the top plate and bottom plate to form a double mold, improve production efficiency, avoid spending a lot of time, reduce the adjustment of the newly added mold, adapt to different production equipment and installation environment, reduce installation difficulty and installation cost, and improve the versatility and flexibility of the device.

[0022] (3) The gas generated during the molding process can be discharged in time through the vent holes on the surface of the fixed mold base, which effectively avoids defects such as bubbles and voids in the molded product, significantly improves the quality of the molded product, and enhances the market competitiveness of the product. Attached Figure Description

[0023] Figure 1 This is a schematic diagram of the structure of this utility model;

[0024] Figure 2 This is a three-dimensional exploded view of the moving mold base and the fixed mold base of this utility model;

[0025] Figure 3 This is a structural schematic diagram of Embodiment 2 of the present invention.

[0026] In the diagram: 1. Base plate; 2. Fixed mold base; 3. Flat plate; 4. Positioning plate; 5. Forming mold; 6. Forming cavity; 7. Vent hole; 8. Mounting slot; 9. Mounting screw hole; 10. Moving mold base; 11. Top plate; 12. Moving module; 13. Guide rod; 14. Calibration cylinder; 15. Top plate; 16. Limiting block; 17. Spring; 18. Bolt; 19. Empty slot. Detailed Implementation

[0027] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0028] In the description of this utility model, it should be noted that, unless otherwise explicitly specified and limited, the terms "installed", "equipped with", "sleeved with", "connected", etc., should be interpreted broadly. For example, "connection" 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. For those skilled in the art, the specific meaning of the above terms in this utility model can be understood according to the specific circumstances.

[0029] Example 1

[0030] Please see Figure 1-2 This utility model provides a technical solution: a high-precision automatic mold calibration device, comprising: a base plate 1, a fixed mold base 2 provided on the top of the base plate 1, and guide rods 13 provided on both sides of the top of the base plate 1. The base plate 1 serves as the basic support component of the device and is usually made of high-strength cast iron or steel, possessing good rigidity and stability, and capable of withstanding the pressure and vibration during mold operation. The fixed mold base 2 is fixed in the center of the top of the base plate 1 and is used to install the fixed mold part (such as the plate 3, the positioning plate 4, and the forming mold 5). Its surface is precision machined to ensure the flatness and verticality of the fixed mold installation. The guide rods 13 are symmetrically arranged on both sides of the top of the base plate 1, using high-hardness smooth rods, and the surface is quenched and chrome-plated, possessing excellent wear resistance and straightness, providing precise guidance for the up-and-down movement of the top plate 15 and the moving mold base 10.

[0031] The top plate 15 has a movable mold base 10 at its bottom, an upper plate 11 at its bottom, and a movable module 12 at its bottom. The top plate 15 is connected to the bottom plate 1 via a guide rod 13 and can slide up and down along the guide rod 13. Its material is similar to that of the bottom plate 1 and it must have sufficient strength to support the weight of the movable mold base 10, the upper plate 11, and the movable module 12. The movable mold base 10 is fixed to the bottom of the top plate 15 and is used to install the movable mold part. Its structural design must correspond to the fixed mold base 2 to ensure the fitting accuracy between the movable mold and the fixed mold. The upper plate 11 is connected to the bottom of the movable mold base 10 and serves as the mounting base for the movable module 12. Its surface is machined with positioning grooves or screw holes for fixing the movable module 12. The movable module 12 is one of the core forming components of the mold. Its shape matches the forming cavity 6 of the forming mold 5, and the product is formed through precise fitting.

[0032] A flat plate 3 is set on top of a fixed mold base 2. A positioning plate 4 is set on the top of the flat plate 3. A forming mold 5 is set on the top of the positioning plate 4. The flat plate 3 is installed on top of the fixed mold base 2 and serves as a transition support. Its surface flatness is required to ensure the installation accuracy of the positioning plate 4 and the forming mold 5. The positioning plate 4 is fixed on the top of the flat plate 3 and is usually machined with positioning pin holes or slots for precise positioning of the forming mold 5 to prevent displacement of the forming mold 5 during operation. The forming mold 5 is the core component of the fixed mold. Its internal forming cavity 6 is designed according to the product shape, and its surface is processed and polished with high precision to ensure the dimensional accuracy and surface quality of the formed product.

[0033] A calibration limiting mechanism is provided between the bottom plate 1 and the top plate 15. The calibration cylinder 14 of the calibration limiting mechanism slides on the surface of the guide rod 13 so that the actuation module 12 can be accurately moved into the interior of the molding mold 5.

[0034] The calibration limiting mechanism includes a limiting block 16 connected to the top of the plate 3. The calibration cylinder 14 is slidably attached to the surface of the guide rod 13. A spring 17 located at the bottom of the limiting block 16 is sleeved on the surface of the guide rod 13. The limiting block 16 provides support for the spring 17. The spring 17 is sleeved on the guide rod 13 and located between the bottom of the limiting block 16 and the positioning part formed by the surface of the guide rod 13. When the top plate 15 and the moving mold base 10 move downward, the calibration cylinder 14 pushes the spring 17 to compress. The elastic force of the spring 17 can buffer the contact impact between the moving module 12 and the forming mold 5, and at the same time provide a restoring force when the mold is opened, ensuring that the calibration cylinder 14 always maintains a tight fit with the guide rod 13 and maintains the calibration accuracy.

[0035] The forming mold 5 has a forming cavity 6 inside, which is the working space for the mold to form the product. Its shape and size are precisely processed according to the product design requirements. The surface roughness of the inner wall is extremely low, and it may also be electroplated or coated to improve wear resistance and demolding properties. The precision of the forming cavity 6 directly affects the dimensional accuracy and appearance quality of the product. Therefore, it needs to be manufactured by precision machining equipment (such as CNC milling machine or EDM machine) and undergo strict testing (such as coordinate measuring machine) to ensure that it meets the design requirements.

[0036] The surface of the fixed mold base 2 is provided with an exhaust hole 7, which passes through the fixed mold base 2 and the plate 3 and connects to the molding cavity 6. Its function is to discharge the air and gas generated by the molding material in the molding cavity 6 during the mold closing and injection process, so as to avoid defects such as bubbles, material shortage or surface defects in the product caused by gas retention. The diameter and position of the exhaust hole 7 are determined according to the molding process and product structure design. It is usually set at the highest point of the molding cavity 6 or in the part where gas is easy to accumulate, to ensure smooth exhaust.

[0037] The calibration cylinder 14 is fixedly connected to both sides of the top of the top plate 15. The calibration cylinder 14 is fixed to both sides of the top of the top plate 15 by screws or welding, corresponding one-to-one with the guide rod 13. This ensures that the top plate 15 is guided by the calibration cylinders 14 on both sides during movement, avoiding skewing. The axis of the calibration cylinder 14 and the axis of the guide rod 13 must be strictly coaxial. During installation, it is necessary to calibrate with a precision measuring tool (such as a dial indicator) to ensure the matching accuracy of the two, thereby ensuring the movement accuracy of the moving module 12.

[0038] The guide rod 13 and the limiting block 16 are connected by bolts 18. The bottom of the guide rod 13 is inserted into the slot 19 of the base plate 1 and fixed by screws or other means. The guide rod 13 and the limiting block 16 are locked together by bolts 18. This installation method facilitates the disassembly and maintenance of the limiting block 16.

[0039] The base plate 1 has slots 19 on both sides for mounting guide rods 13. The slots 19 are located on both sides of the base plate 1, and their depth and width are designed according to the size of the guide rods 13 to accommodate the bottom of the guide rods 13 and provide installation space for the guide rods 13. After the bottom of the guide rods 13 is inserted into the slots 19, they are connected to the base plate 1 by screws or other fixing methods to ensure that the guide rods 13 are firmly installed and perpendicular to the base plate 1, thereby providing a precise guiding reference for the entire calibration and limiting mechanism. The machining accuracy of the slots 19 must match the installation requirements of the guide rods 13 to ensure the verticality and stability of the guide rods 13 after installation.

[0040] Specifically, during use, when work begins, the moving mold base 10, the upper plate 11, and the moving module 12 on the top plate 15 begin to move downward under the action of an external power source (such as a hydraulic drive device or other power equipment). Since the calibration cylinder 14 is fixedly connected to both sides of the top of the top plate 15 and slides on the surface of the guide rod 13, the guide rod 13 provides a precise guide path for the movement of the calibration cylinder 14, thereby ensuring that the moving module 12 can move smoothly along the predetermined straight direction during the downward movement.

[0041] During the downward movement of the moving module 12, the spring 17, which is fitted on the surface of the guide rod 13 and located at the bottom of the limiting block 16, plays an important role. The spring 17 is initially in a certain state of compression or tension (depending on the installation and design of the device). When the moving module 12 moves downward, the spring 17 will deform accordingly as the calibration cylinder 14 slides on the guide rod 13, generating elastic force. This elastic force can buffer the movement of the moving module 12, avoiding impact and vibration caused by excessive movement speed or unstable power, and ensuring the smooth movement of the moving module 12. On the other hand, the elastic force of the spring 17 can also assist in calibration. When the moving module 12 has a slight deviation during the movement, the elastic force generated by the spring 17 can cause the calibration cylinder 14 to make fine adjustments on the guide rod 13, so that the moving module 12 can move accurately into the interior of the molding mold 5.

[0042] When the moving module 12 reaches the inside of the molding mold 5, the moving module 12 and the molding cavity 6 inside the molding mold 5 cooperate with each other to start the mold forming operation. During the forming process, the venting hole 7 opened on the surface of the fixed mold base 2 plays a key role. During the mold forming process, the material is squeezed and other forces in the molding cavity 6, which will generate gas. If these gases cannot be discharged in time, it will cause defects such as bubbles and voids in the molded product, affecting the product quality. The venting hole 7 can discharge the gas generated during the forming process in time, ensuring the quality of the molded product.

[0043] Meanwhile, the guide rod 13 and the limiting block 16 are connected by bolts 18. This connection method not only facilitates the installation and disassembly of the guide rod 13 and the limiting block 16, making the maintenance and repair of the device easier, but also allows for fine-tuning of the position and state of the guide rod 13 and the limiting block 16 by adjusting the tightness of the bolts 18 according to actual production needs, thereby further optimizing the calibration and working performance of the device.

[0044] Example 2

[0045] Please see Figure 3 This utility model provides a technical solution that is basically the same as that in Embodiment 1, with the following slight differences:

[0046] The top plate 15 and the bottom plate 1 have mounting grooves 8 inside. The top of the mounting groove 8 has mounting screw holes 9. The mounting groove 8 is rectangular or other adaptable shape and is opened horizontally inside the top plate 15 and the bottom plate 1. The mounting screw holes 9 are located at the top of the mounting groove 8 and correspond to the mounting holes of the drive component. The drive component is firmly fixed in the mounting groove 8 by screwing through the moving mold base 10 and the mounting groove 8 and screwing it into the mounting screw holes 9.

[0047] In addition, the mounting grooves 8 inside the top plate 15 and the bottom plate 1, as well as the mounting screw holes 9 on the top of the mounting grooves 8, facilitate the connection between the entire device and the moving mold base 10 and the fixed mold base 2. By installing screws and other connecting parts in the mounting grooves 8 and fixing them with the mounting screw holes 9, the high-precision mold automatic calibration device can be stably installed on the production equipment to form a dual mold, which will increase production efficiency and facilitate subsequent use.

[0048] 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 high-precision automatic mold calibration device, characterized in that, include: A base plate (1) is provided with a fixed mold base (2) on the top of the base plate (1) and guide rods (13) are provided on both sides of the top of the base plate (1); A top plate (15) is provided with a moving mold base (10) at the bottom of the top plate (15), an upper plate (11) is provided at the bottom of the moving mold base (10), and a moving module (12) is provided at the bottom of the upper plate (11). A flat plate (3) is provided on the top of a fixed mold base (2), a positioning plate (4) is provided on the top of the flat plate (3), and a forming mold (5) is provided on the top of the positioning plate (4). A calibration limiting mechanism is provided between the bottom plate (1) and the top plate (15). The calibration cylinder (14) of the calibration limiting mechanism slides on the surface of the guide rod (13) so that the driving module (12) can be accurately moved into the interior of the molding mold (5).

2. The high-precision automatic mold calibration device according to claim 1, characterized in that, The calibration limiting mechanism includes a limiting block (16) connected to the top of the plate (3), the calibration cylinder (14) slides on the surface of the guide rod (13), and a spring (17) located at the bottom of the limiting block (16) is sleeved on the surface of the guide rod (13).

3. The high-precision automatic mold calibration device according to claim 1, characterized in that, The molding mold (5) has a molding cavity (6) inside.

4. The high-precision automatic mold calibration device according to claim 1, characterized in that, The top plate (15) and the bottom plate (1) are provided with mounting grooves (8), and the top of the mounting grooves (8) is provided with mounting screw holes (9).

5. The high-precision automatic mold calibration device according to claim 1, characterized in that, The surface of the fixed mold base (2) is provided with an exhaust hole (7).

6. The high-precision automatic mold calibration device according to claim 2, characterized in that, The calibration cylinder (14) is fixedly connected to both sides of the top of the top plate (15).

7. The high-precision automatic mold calibration device according to claim 2, characterized in that, The guide rod (13) and the limiting block (16) are connected by bolts (18).

8. The high-precision automatic mold calibration device according to claim 1, characterized in that, The base plate (1) has slots (19) on both sides inside for installing guide rods (13).

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