Positioning device for mold production and processing machine tool

Abstract

The utility model relates to mould production technical field especially relates to a positioning device for mould production and processing machine tool, its technical scheme includes: bottom plate, installs drive assembly on it, has the worm and the worm wheel meshed with of rotation in bottom plate, worm one end is equipped with hand wheel for driving. The fixed clamp block is fixed on the bottom plate, the slide rail of sliding assembly is also fixed on the bottom plate, the sliding block is slidably connected with the bottom plate through the slide rail and is located one side of the fixed clamp block. In the connecting rod mechanism, the connecting rod one end is eccentrically connected with the worm wheel, the other end and the connecting block on the sliding block are movably connected, the worm wheel rotation is converted into the linear motion of sliding block. The movable clamp block is detachably mounted on the sliding block through the quick dismounting structure, and the clamping area is formed opposite to the fixed clamp block. The utility model drives the worm wheel worm through the hand wheel, drives the movable clamp block accurate linear movement, can fast clamping mould, and the movable clamp block dismounting is convenient, is favorable for maintenance replacement.

Description

Technical Field

[0001] This utility model relates to the field of mold manufacturing technology, specifically to a positioning device for mold manufacturing machine tools. Background Technology

[0002] In modern industrial production, especially in mold processing, positioning devices are crucial equipment for ensuring precise mold machining and installation. The performance of the positioning device directly affects the mold's machining accuracy, production efficiency, and product quality. As the manufacturing industry develops towards higher precision, higher efficiency, and greater flexibility, more stringent requirements are being placed on the function and performance of positioning devices. The increasing diversity of mold specifications necessitates that positioning devices can quickly and stably adapt to the clamping and positioning needs of molds of different sizes, thereby shortening production preparation time and improving the flexibility and adaptability of the production line.

[0003] Currently, most positioning devices on the market employ the lead screw and nut principle to clamp molds. While the lead screw and nut transmission mechanism offers advantages such as simple structure and smooth transmission, its inherent characteristics significantly impact clamping accuracy in practical applications. Firstly, backlash is unavoidable during the transmission process. This backlash is caused by factors such as machining accuracy of the lead screw and nut, assembly errors, and wear after long-term use. When clamping a mold, this backlash causes a deviation between the actual movement distance of the clamping block and the theoretical value, preventing the mold from being precisely positioned at the intended location and thus reducing machining accuracy. Especially in high-precision mold machining, these minute deviations can accumulate and amplify, leading to quality problems such as dimensional errors and shape deformation, severely impacting product yield and production efficiency.

[0004] On the other hand, the lead screw and nut drive mechanism is quite sensitive to temperature changes. When the ambient temperature fluctuates, the materials of the lead screw and nut will expand and contract with temperature changes, causing their dimensions to change. This dimensional change will further alter the transmission clearance, making it more difficult to guarantee clamping accuracy. For example, in high-temperature environments, the lead screw and nut will expand, reducing the transmission clearance and potentially leading to excessive clamping force, which could damage the mold; while in low-temperature environments, the lead screw and nut will contract, increasing the transmission clearance and resulting in insufficient clamping force, making the mold prone to movement during processing and affecting machining accuracy. Utility Model Content

[0005] To address the shortcomings of existing technologies, this utility model provides a positioning device for mold manufacturing machine tools, which solves the problems mentioned in the background art.

[0006] The solution to the above-mentioned technical problems provided by this utility model is as follows:

[0007] A positioning device for a mold manufacturing machine tool, comprising:

[0008] Base plate;

[0009] The drive assembly includes a worm gear rotatably mounted on the base plate and a worm wheel meshing with the worm gear, and a handwheel for driving the worm gear to rotate is provided at one end of the worm gear;

[0010] A fixed clamping block is fixedly installed on the base plate;

[0011] A sliding assembly includes a slide rail fixedly mounted on the base plate and a slider slidably connected to the base plate via the slide rail, the slider being disposed on one side of the fixed clamping block;

[0012] A linkage mechanism includes a connecting rod at one end eccentrically connected to the worm gear, and the other end of the connecting rod movably connected to a connecting block fixed on the slider, for converting the rotational motion of the worm gear into the linear motion of the slider;

[0013] The movable clamping block is detachably mounted on the slider via a quick-release structure and is positioned opposite the fixed clamping block to form a clamping area.

[0014] Based on the above technical solution, the present invention can be further improved as follows.

[0015] Furthermore, the drive assembly also includes bearing seats for supporting the worm gear, which is rotatably mounted on the base plate via the bearing seats at both ends.

[0016] The beneficial effects of adopting the above-mentioned further solutions are:

[0017] The bearing housing provides stable and reliable support for the worm gear, ensuring that it does not wobble or deviate excessively during rotation. This guarantees more precise and smooth meshing transmission between the worm gear and the worm wheel. This not only helps improve the motion accuracy of the entire positioning device and reduce transmission errors, but also reduces wear on the worm gear and worm wheel, extending their service life and lowering equipment maintenance costs.

[0018] Furthermore, the base plate has a groove for accommodating part of the sliding component, and the slide rail is installed in the groove.

[0019] The beneficial effects of adopting the above-mentioned further solutions are:

[0020] The groove design allows the slide rail to be partially embedded in the base plate, effectively reducing the overall height of the positioning device, making the structure more compact and saving space. At the same time, the groove provides some protection for the slide rail, preventing external objects from colliding with it and avoiding deformation or damage due to external impacts. This ensures the slider can slide smoothly on the rail, improving the stability and reliability of the device.

[0021] Furthermore, the bottom end of the slider is provided with a groove that matches the shape and size of the slide rail, and the slider achieves a sliding connection with the base plate through the cooperation of the slide rail with the groove.

[0022] The beneficial effects of adopting the above-mentioned further solutions are:

[0023] The design of the slide groove and the slide rail, with their matching shapes and sizes, ensures a tighter fit between the slider and the slide rail. This effectively restricts the slider's degree of freedom perpendicular to the sliding direction, preventing wobbling or deviation during sliding and guaranteeing the linearity and smoothness of the slider's movement. This precise sliding connection helps improve the positioning accuracy of the positioning device, ensuring that the mold can be accurately clamped and positioned to meet high-precision machining requirements.

[0024] Furthermore, the quick-release structure includes a dovetail pin block disposed on the slider and a limiting groove formed at the bottom end of the movable clamping block. The movable clamping block is installed on the slider through the cooperation of the limiting groove and the dovetail pin block.

[0025] The beneficial effects of adopting the above-mentioned further solutions are:

[0026] The dovetail pin and limiting groove have a simple and reliable fit, enabling quick installation and removal of the movable clamping block. When it is necessary to replace the movable clamping block to accommodate different mold sizes, the operator only needs to pull out or insert the movable clamping block along the direction perpendicular to the bottom groove of the slider to complete the disassembly and assembly operation, greatly shortening the replacement time and improving work efficiency. Moreover, this connection method has good stability, ensuring that the movable clamping block will not loosen or fall off during the clamping of the mold, ensuring the reliability of positioning.

[0027] Furthermore, the groove at the bottom of the slider is perpendicular to the limiting groove at the bottom of the movable clamping block.

[0028] The beneficial effects of adopting the above-mentioned further solutions are:

[0029] The perpendicular design of the slide groove and the limiting groove ensures that the sliding direction of the slider on the slide rail is independent of the assembly / disassembly direction of the movable clamping block, preventing interference. During the slider's movement, the installation stability of the movable clamping block is not affected; conversely, the assembly / disassembly of the movable clamping block does not affect the normal sliding of the slider on the slide rail. This design further improves the ease of operation and stability of the positioning device, making the entire device more coordinated and efficient during operation.

[0030] This utility model provides a positioning device for mold manufacturing machine tools. It has the following features:

[0031] Beneficial effects:

[0032] The positioning device uses a worm and worm gear as the core transmission part of the driving component. The worm and worm gear transmission has a large transmission ratio, which can make the worm generate a large rotation angle under a small rotation angle of the handwheel, and then drive the slider to move a large distance through the connecting rod mechanism. This characteristic enables the operator to easily control the movement of the movable clamping block and achieve rapid positioning of the mold. At the same time, the worm and worm gear transmission has good self-locking property. When the handwheel stops rotating, the worm cannot drive the worm to rotate in the reverse direction, thus ensuring that the movable clamping block will not loosen due to external forces after clamping the mold, and ensuring the stability and reliability of the positioning.

[0033] One end of the connecting rod is eccentrically connected to the worm, and the other end is movably connected to the connecting block fixed on the slider. This design ingeniously converts the rotational motion of the worm into the linear motion of the slider. During the rotation of the worm, the eccentric connection of the connecting rod makes one end of the connecting rod perform a circular motion, while the other end pushes the slider to perform a linear reciprocating motion along the slide rail. Since the slide rail is installed in the groove opened on the bottom plate, and the bottom end of the slider is provided with a chute adapted to the shape and size of the slide rail, this matching method ensures the linearity and stability of the slider movement, reduces the deviation and vibration during the movement, and thus improves the positioning accuracy.

[0034] The movable clamping block is detachably installed on the slider through a quick disassembly and assembly structure. The quick disassembly and assembly structure includes a dovetail pin block arranged on the slider and a limiting groove opened at the bottom end of the movable clamping block. When it is necessary to replace the movable clamping block, the operator only needs to pull out the movable clamping block along the direction perpendicular to the chute at the bottom end of the slider to separate the limiting groove from the dovetail pin block, and then the movable clamping block can be easily removed; when installing a new movable clamping block, align the limiting groove of the movable clamping block with the dovetail pin block and insert it to complete the installation. This quick disassembly and assembly structure greatly shortens the time for replacing the movable clamping block and improves the work efficiency, especially suitable for scenarios where different specifications of movable clamping blocks need to be frequently replaced to adapt to the positioning of different molds.

[0035] Since the movable clamping block can move linearly relative to the fixed clamping block under the drive of the slider, this positioning device can adapt to molds of different sizes. The operator can control the moving distance of the slider by rotating the handwheel according to the size of the mold, so as to adjust the distance between the movable clamping block and the fixed clamping block and achieve the clamping and positioning of various specifications of molds. This good adaptability enables this positioning device to have a wider application range and can meet the needs of different production scenarios. Brief Description of the Drawings

[0036] The drawings described herein are used to provide a further understanding of the present invention and form a part of this application. The schematic embodiments of the present invention and their descriptions are used to explain the present invention and do not constitute an improper limitation to the present invention.

[0037] In the drawings:

[0038] Fig. 1 This is a schematic diagram of the main appearance of the present utility model;

[0039] Fig. 2 This is a rear view schematic diagram of the present utility model;

[0040] Fig. 3 This is a schematic diagram of the exploded slider structure of this utility model.

[0041] The attached diagram lists the components represented by each number as follows:

[0042] 1. Base plate; 101. Groove; 2. Slider; 201. Connecting rod; 202. Connecting block; 203. Movable clamping block; 204. Limiting groove; 205. Slide rail; 206. Dovetail pin block; 3. Fixed clamping block; 4. Worm gear; 401. Bearing seat; 402. Handwheel; 5. Worm wheel. Detailed Implementation

[0043] 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.

[0044] Please see Figs. 1-3 As shown, the embodiments provided by this utility model are as follows:

[0045] Example 1

[0046] A positioning device for a mold manufacturing machine tool, comprising:

[0047] Base plate 1;

[0048] The drive assembly includes a worm gear 4 rotatably mounted on the base plate 1 and a worm wheel 5 meshing with the worm gear 4 for transmission. One end of the worm gear 4 is provided with a handwheel 402 for driving its rotation.

[0049] The fixed clamping block 3 is fixedly installed on the base plate 1;

[0050] The sliding assembly includes a slide rail 205 fixedly mounted on the base plate 1 and a slider 2 slidably connected to the base plate 1 via the slide rail 205. The slider 2 is disposed on one side of the fixed clamping block 3.

[0051] The linkage mechanism includes a connecting rod 201 with one end eccentrically connected to the worm gear 5, and the other end of the connecting rod 201 is movably connected to a connecting block 202 fixed on the slider 2, so as to convert the rotational motion of the worm gear 5 into the linear motion of the slider 2.

[0052] The movable clamping block 203 is detachably mounted on the slider 2 via a quick-release structure and is positioned opposite the fixed clamping block 3 to form a clamping area.

[0053] Example 2

[0054] To improve the stability of worm gear rotation in the drive assembly and ensure the accuracy of worm gear transmission, for example, such as Figs. 1-3 As shown, this utility model also includes:

[0055] The drive assembly also includes bearing seats 401 for supporting the worm 4. The worm 4 is rotatably mounted on the base plate 1 via the bearing seats 401 at both ends. The bearing seats 401 provide stable and reliable support for the worm 4, ensuring that the worm 4 does not experience excessive wobbling or offset during rotation, thereby ensuring more precise and smooth meshing transmission between the worm wheel 5 and the worm 4. This not only helps improve the motion accuracy of the entire positioning device and reduce transmission errors, but also reduces the wear of the worm 4 and worm wheel 5, extends their service life, and reduces equipment maintenance costs.

[0056] Example 3

[0057] To optimize the spatial layout of the positioning device, enhance the compactness of the device structure, and protect the sliding components, for example, such as Figs. 1-3 As shown, this utility model also includes:

[0058] The base plate 1 has a groove 101 for accommodating part of the sliding component. The slide rail 205 is installed in the groove 101. The design of the groove 101 allows the slide rail 205 to be partially embedded in the base plate 1, effectively reducing the height of the entire positioning device, making the structure more compact and saving space. At the same time, the groove 101 can also protect the slide rail 205 to a certain extent, preventing external objects from colliding with the slide rail 205 and avoiding deformation or damage to the slide rail 205 due to external impact. This ensures that the slider 2 can slide smoothly on the slide rail 205, improving the stability and reliability of the device.

[0059] The bottom end of slider 2 has a groove that matches the shape and size of slide rail 205. Slider 2 achieves sliding connection with base plate 1 through the cooperation of slide rail 205 and groove. The design of groove matching slide rail 205 makes the fit between slider 2 and slide rail 205 tighter, effectively restricting the degree of freedom of slider 2 in the perpendicular sliding direction, preventing slider 2 from shaking or deviating during sliding, and ensuring the linearity and stability of slider 2's movement. This precise sliding connection method helps improve the positioning accuracy of the positioning device, ensuring that the mold can be accurately clamped and positioned, meeting the requirements of high-precision processing.

[0060] Example 4

[0061] To enable rapid assembly and disassembly of the movable clamping blocks and improve the adaptability and ease of operation of the positioning device to molds of different specifications, for example, such as Figs. 1-3 As shown, this utility model also includes:

[0062] The quick-release structure includes a dovetail pin 206 mounted on the slider 2 and a limiting groove 204 at the bottom of the movable clamping block 203. The movable clamping block 203 is mounted on the slider 2 through the engagement of the limiting groove 204 and the dovetail pin 206. The engagement structure between the dovetail pin 206 and the limiting groove 204 is simple and reliable, enabling quick installation and removal of the movable clamping block 203. When it is necessary to replace the movable clamping block 203 to accommodate different mold sizes, the operator only needs to pull out or insert the movable clamping block 203 along the direction perpendicular to the groove at the bottom of the slider 2 to complete the disassembly and assembly operation, greatly shortening the replacement time and improving work efficiency. Moreover, this connection method has good stability, ensuring that the movable clamping block 203 will not loosen or fall off during the clamping of the mold, ensuring the reliability of positioning.

[0063] The sliding groove at the bottom of slider 2 is perpendicular to the limiting groove 204 at the bottom of movable clamping block 203. This perpendicularity design ensures that the sliding direction of slider 2 on slide rail 205 is independent of the assembly / disassembly direction of movable clamping block 203, preventing interference. During the sliding of slider 2, the installation stability of movable clamping block 203 is not affected; conversely, the normal sliding of slider 2 on slide rail 205 is not affected during the assembly / disassembly of movable clamping block 203. This design further improves the ease of operation and stability of the positioning device, making the entire device more coordinated and efficient during operation.

[0064] Working principle:

[0065] The operator rotates handwheel 402, which, being connected to worm gear 4, causes worm gear 4 to rotate around its own axis. Worm gear 4 is securely mounted on base plate 1 via bearing seats 401 at both ends, ensuring smooth rotation.

[0066] When the worm 4 rotates, the worm wheel 5 meshing with it will rotate accordingly. One end of the connecting rod 201 is eccentrically connected to the worm wheel 5, and the other end is movably connected to the connecting block 202 fixed on the slider 2. The rotational motion of the worm wheel 5 is transmitted to the slider 2 through the connecting rod 201. Since the connecting rod 201 is eccentrically connected to the worm wheel 5, and the slider 2 and the base plate 1 are slidably connected through the slide rail 205 and the slide groove, this connection method converts the rotational motion of the worm wheel 5 into the linear motion of the slider 2, causing the slider 2 to perform linear reciprocating motion on the base plate 1 along the slide rail 205.

[0067] The fixed clamping block 3 is fixedly installed on the base plate 1, and the slider 2 is located on one side of the fixed clamping block 3. The movable clamping block 203 is detachably installed on the slider 2 through a quick-release structure and is arranged opposite to the fixed clamping block 3 to form a clamping area. When the slider 2 moves linearly under the action of the connecting rod 201 mechanism, it will drive the movable clamping block 203 to move together, thereby changing the distance between the movable clamping block 203 and the fixed clamping block 3.

[0068] The movable clamping block 203 is installed on the slider 2 through the limiting groove 204 at its bottom end and the dovetail pin 206 on the slider 2. When the movable clamping block 203 needs to be replaced, simply pull the movable clamping block 203 out in a direction perpendicular to the sliding groove at the bottom end of the slider 2 (because the sliding groove at the bottom end of the slider 2 and the limiting groove 204 at the bottom end of the movable clamping block 203 are perpendicular to each other), so that the limiting groove 204 and the dovetail pin 206 are separated, and the movable clamping block 203 can be removed. When installing a new movable clamping block 203, align the limiting groove 204 of the movable clamping block 203 with the dovetail pin 206 and insert it to complete the installation.

[0069] According to the size of the mold, the operator controls the movement distance of the slider 2 by turning the handwheel 402, thereby adjusting the distance between the movable clamping block 203 and the fixed clamping block 3. When the distance between the movable clamping block 203 and the fixed clamping block 3 is appropriate, the mold is placed in the clamping area formed by the movable clamping block 203 and the fixed clamping block 3. The operator continues to turn the handwheel 402 to move the movable clamping block 203 closer to the fixed clamping block 3 until the mold is clamped, thereby positioning the mold on the machine tool for subsequent processing operations.

[0070] The foregoing has shown and described the basic principles, main features, and advantages of this utility model. It will be apparent to those skilled in the art that this utility model is not limited to the details of the exemplary embodiments described above, and that it can be implemented in other specific forms without departing from the spirit or basic characteristics of this utility model. Therefore, the embodiments should be considered exemplary and non-limiting in all respects. The scope of this utility model is defined by the appended claims rather than the foregoing description, and thus all variations falling within the meaning and scope of equivalents of the claims are intended to be included within this utility model. No reference numerals in the claims should be construed as limiting the scope of the claims.

[0071] Furthermore, it should be understood that although this specification describes embodiments, not every embodiment contains only one independent technical solution. This narrative style is merely for clarity. Those skilled in the art should consider the specification as a whole, and the technical solutions in each embodiment can also be appropriately combined to form other embodiments that can be understood by those skilled in the art.

Claims

1. A positioning device for a mold manufacturing machine tool, characterized in that, include: Base plate (1); The drive assembly includes a worm (4) rotatably mounted on the base plate (1) and a worm wheel (5) meshing with the worm (4) for transmission, and a handwheel (402) for driving its rotation is provided at one end of the worm (4); Fixed clamping block (3) is fixedly installed on the base plate (1); The sliding assembly includes a slide rail (205) fixedly mounted on the base plate (1) and a slider (2) slidably connected to the base plate (1) via the slide rail (205), the slider (2) being disposed on one side of the fixed clamping block (3); The linkage mechanism includes a connecting rod (201) with one end eccentrically connected to the worm gear (5), and the other end of the connecting rod (201) is movably connected to a connecting block (202) fixed on the slider (2) to convert the rotational motion of the worm gear (5) into the linear motion of the slider (2); The movable clamping block (203) is detachably mounted on the slider (2) via a quick-release structure and is arranged opposite to the fixed clamping block (3) to form a clamping area.

2. The positioning device for a mold manufacturing machine tool according to claim 1, characterized in that: The drive assembly also includes bearing seats (401) for supporting the worm (4), which is rotatably mounted on the base plate (1) via the bearing seats (401) at both ends.

3. The positioning device for a mold manufacturing machine tool according to claim 1, characterized in that: The base plate (1) has a groove (101) for accommodating part of the sliding component, and the slide rail (205) is installed in the groove (101).

4. The positioning device for a mold manufacturing machine tool according to claim 1, characterized in that: The bottom end of the slider (2) is provided with a groove that matches the shape and size of the slide rail (205). The slider (2) achieves sliding connection with the base plate (1) through the cooperation of the slide rail (205) with the groove.

5. The positioning device for a mold manufacturing machine tool according to claim 1, characterized in that: The quick-release structure includes a dovetail pin (206) disposed on the slider (2) and a limiting groove (204) opened at the bottom end of the movable clamping block (203). The movable clamping block (203) is installed on the slider (2) through the cooperation of the limiting groove (204) and the dovetail pin (206).

6. The positioning device for a mold manufacturing machine tool according to claim 1, characterized in that: The groove at the bottom of the slider (2) is perpendicular to the limiting groove (204) at the bottom of the movable clamp (203).

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