A plastic mold fixing tool for preventing deformation in plastic mold processing

Abstract

This utility model relates to the field of mold fixing fixture technology, specifically to a mold fixing fixture for preventing deformation during plastic mold processing. It includes a worktable, a plastic mold to be processed located on the worktable, positioning clamps installed on the worktable for fixing the four corners of the plastic mold, and an anti-deformation positioning mechanism installed on the worktable for applying locking force to the plastic mold. This mold fixing fixture, through its adjustable anti-deformation positioning mechanism design, employs a dual pressure control system of pressure adjustment components a and b, combined with the articulated linkage structure of the telescopic arm and lever arm, and the precision threaded adjustment function. This achieves multi-point dynamic locking force compensation after fixing the four corners of the plastic mold, enabling precise control of the direction and magnitude of pressure applied to different areas, effectively offsetting the stress generated by cutting force and thermal deformation during processing. Its modular combination structure (detachable base, adjustable positioning shaft) gives the fixture high adaptability.

Description

Technical Field

[0001] This utility model relates to the field of mold fixing fixture technology, specifically a mold fixing fixture for preventing deformation in plastic mold processing. Background Technology

[0002] In plastic mold processing, anti-deformation mold fixing fixtures play a crucial role. Their core function is to provide stable support and precise positioning, ensuring the mold remains stable during processing operations such as cutting and grinding, and reducing deformation caused by vibration or uneven stress. Fixtures typically use high-strength materials with a robust structure, such as rigid frames and multi-point fixing devices, which can effectively distribute the force and make the force on all parts of the mold even. At the same time, with the help of high-precision positioning elements, such as positioning pins and clamping blocks, the consistency and repeatability of mold installation and processing are guaranteed, thereby improving mold accuracy and service life, and reducing the risk of product quality problems and increased processing costs caused by deformation.

[0003] Mold fixing fixtures are important auxiliary tools for improving mold processing quality and production efficiency, but they still have certain problems: 1) Traditional fixing fixtures use rigid clamping methods, which cannot dynamically compensate for the changing cutting forces and thermal deformations during processing, leading to local stress concentration or clamping force failure in the mold and causing deformation; 2) They rely heavily on fixing pressure in a single direction (such as the vertical direction), making it difficult to balance the impact of multi-directional stress on the mold; 3) Traditional fixtures have fixed structures, requiring customized fixtures for different mold sizes, resulting in high costs and long changeover cycles; 4) Most fixtures rely only on four-corner positioning, lacking effective support in the middle of the mold, making it easy for vibration in the suspended area to cause a decrease in accuracy during processing. Therefore, in view of the above situation, there is an urgent need to develop a mold fixing fixture that prevents deformation in plastic mold processing to overcome the shortcomings in current practical applications and meet current needs. Utility Model Content

[0004] The purpose of this utility model is to provide a mold fixing fixture for preventing deformation in plastic mold processing, so as to solve the problems mentioned in the background art.

[0005] To achieve the above objectives, this utility model provides the following technical solution: a mold fixing fixture for preventing deformation during plastic mold processing, including a worktable, a plastic mold to be processed located on the worktable, a positioning clamp installed on the worktable for fixing the four corners of the plastic mold, and an anti-deformation positioning mechanism installed on the worktable for applying locking force to the plastic mold.

[0006] The anti-deformation positioning mechanism includes a base, a rotating shaft seat, a lever arm, a telescopic arm, a pressing component, a pressure adjusting component a, a pressure adjusting component b, and a positioning shaft. The base is detachably mounted on the worktable. The rotating shaft seat is sleeved on the base. One end of the lever arm is hinged to the rotating shaft seat. The telescopic arm is slidably mounted on the other end of the lever arm. The pressing component is movably mounted on the end of the telescopic arm away from the lever arm. The pressure adjusting component a is rotatably mounted between the telescopic arm and the pressing component. The positioning shaft is detachably mounted on the worktable. The pressure adjusting component b is rotatably mounted between the lever arm and the positioning shaft.

[0007] The pressure regulating assembly a includes a sleeve, an adjusting sleeve, and an adjusting rod. The sleeve is rotatably mounted on the outside of the pressing part, and the adjusting rod is rotatably mounted on the bottom of the telescopic arm. One end of the adjusting sleeve is sleeved on the bottom end of the adjusting rod and is threadedly connected to the adjusting rod. The other end of the sleeve is sleeved on the adjusting sleeve and is threadedly connected to the adjusting sleeve.

[0008] Preferably, a bearing is embedded between the base and the rotating shaft seat. Specifically, the bearing reduces the friction during horizontal rotation, allowing for free adjustment of the horizontal angle.

[0009] Preferably, the sleeve has an internal thread 'a', the adjusting sleeve has an external thread 'a', the adjusting sleeve has an internal thread 'b', and the adjusting rod has an external thread 'b'. The internal thread 'a' matches the external thread 'a', and the internal thread 'b' matches the external thread 'b'. The pitch of the external thread 'a' is larger than the pitch of the external thread 'b'. The adjusting sleeve is fitted with an external hexagonal fitting 'a', and the adjusting rod is fitted with an external hexagonal fitting 'b'. Specifically, the overall length is adjusted by rotating the sleeve, adjusting sleeve, and adjusting rod, thereby achieving pressure adjustment of the support part. The pitch can be adjusted coarsely or finely to achieve precise pressure adjustment.

[0010] Preferably, a universal ball joint a is fixed at the bottom end of the sleeve, a universal ball joint seat c is fixed on the outer wall of the pressing part, and the universal ball joint a and the universal ball joint seat c are rotatably connected. A universal ball joint b is fixed at the top end of the adjusting rod, a universal ball joint b is fixed at the bottom of the telescopic arm, and the universal ball joint b is rotatably connected to the universal ball joint seat b. A universal ball joint a is fixed at the bottom of the lever arm, a universal ball joint d is fixed on the positioning shaft, and the pressure adjusting component b has the same structure as the pressure adjusting component a. The two ends of the pressure adjusting component b are rotatably connected to the universal ball joint a and the universal ball joint d, respectively. Specifically, the universal ball connection structure gives it higher flexibility and can adapt to the fixing operation of molds of different sizes.

[0011] Preferably, a pressing head and a hinge seat are fixedly provided at the end of the telescopic arm away from the lever arm, and a telescopic shaft is fixedly provided at the end of the telescopic arm adjacent to the lever arm. The telescopic shaft passes through the inside of the lever arm and is slidably connected to the lever arm. Specifically, the length of the telescopic arm can be adjusted by the telescopic shaft to adapt to the positioning requirements of the mold at different positions.

[0012] Preferably, a positioning component is fixedly provided on one side of the pressing component, and a pressure sensor is fixedly provided on the upper surface of the pressing component. The positioning component includes a cylinder, a spring, a piston, and an end cap. The cylinder is fixedly provided on the outer wall of the pressing component. The spring and piston are sequentially embedded in the cylinder and movably connected to the cylinder. The end cap is sleeved on the top of the cylinder. The top of the piston rod of the piston is hinged to the hinge seat. Specifically, the positioning component can prevent the telescopic arm from directly transmitting pressure to the pressing component, thereby avoiding the detection of the pressure sensor and ensuring the accuracy of pressure detection.

[0013] Preferably, the pressing head is vertically aligned with the pressure sensor. Specifically, the pressing head transmits pressure to the pressure sensor, which then applies it to the pressing component to position the plastic mold, ensuring the pressure sensor's accuracy in detecting pressure.

[0014] Compared with the prior art, this utility model provides a mold fixing fixture to prevent deformation in plastic mold processing, which has the following beneficial effects:

[0015] This mold fixing fixture features an adjustable anti-deformation positioning mechanism and a dual pressure control system using pressure adjustment components a and b. Combined with the articulated linkage structure of the telescopic arm and lever arm, and the precision threaded adjustment function, it achieves multi-point dynamic locking force compensation after fixing the four corners of the plastic mold. This allows for precise control of the direction and magnitude of pressure applied to different areas, effectively offsetting stresses generated by cutting forces and thermal deformation during processing. Its modular combination structure (detachable base, adjustable positioning shaft) makes the fixture highly adaptable, quickly matching the anti-deformation requirements of molds of different sizes. Simultaneously, through the composite adjustment mechanism of the rotating shaft seat and sleeve, it balances vertical pressure and lateral support, significantly improving the structural stability of the mold during processing, reducing warping deformation of the finished product, and increasing processing accuracy and product qualification rate. Attached Figure Description

[0016] To more clearly illustrate the technical solutions in the embodiments of this utility model, the drawings used in the description of the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0017] Figure 1 This is a schematic diagram of the front structure of this utility model;

[0018] Figure 2 This is a schematic diagram of the anti-deformation positioning mechanism of this utility model;

[0019] Figure 3 This is a side longitudinal section view of the anti-deformation positioning mechanism of this utility model;

[0020] Figure 4 This is an exploded view of the anti-deformation positioning mechanism of this utility model;

[0021] Figure 5 This is an exploded view of the pressure regulating component a of this utility model.

[0022] In the diagram: 10. Worktable; 20. Anti-deformation positioning mechanism; 210. Base; 211. Bearing; 220. Rotary shaft seat; 230. Lever arm; 231. Universal ball joint seat a; 240. Telescopic arm; 241. Pressing head; 242. Hinge seat; 243. Universal ball joint seat b; 244. Telescopic shaft; 250. Pressing component; 251. Universal ball joint seat c; 252. Positioning assembly; 2521. Cylinder; 2522. Spring; 2523. Piston; 2524. End cap; 253. Pressure. Sensor; 260, Pressure regulating component a; 261, Sleeve; 2611, Universal ball joint a; 2612, Internal thread a; 262, Adjusting sleeve; 2621, External hexagonal fitting a; 2622, External thread a; 2623, Internal thread b; 263, Adjusting rod; 2631, External hexagonal fitting b; 2632, External thread b; 2633, Universal ball joint b; 270, Pressure regulating component b; 280, Positioning shaft; 281, Universal ball joint seat d; 30, Plastic mold; 40, Positioning fixture. Detailed Implementation

[0023] 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.

[0024] In this utility model, unless otherwise explicitly specified and limited, the terms "installation," "connection," "joining," and "fixing," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model according to the specific circumstances.

[0025] Example:

[0026] Please see Figures 1-5This utility model provides a technical solution: a mold fixing fixture for preventing deformation in plastic mold processing, including a worktable 10, a plastic mold 30 to be processed on the worktable 10, a positioning clamp 40 installed on the worktable 10 for fixing the four corners of the plastic mold 30, and an anti-deformation positioning mechanism 20 installed on the worktable 10 for applying locking force to the plastic mold 30.

[0027] The anti-deformation positioning mechanism 20 includes a base 210, a rotating shaft seat 220, a lever arm 230, a telescopic arm 240, a pressing component 250, a pressure adjusting component a260, a pressure adjusting component b270, and a positioning shaft 280. The base 210 is detachably mounted on the worktable 10. The rotating shaft seat 220 is sleeved on the base 210. One end of the lever arm 230 is hinged to the rotating shaft seat 220. The telescopic arm 240 is slidably mounted on the other end of the lever arm 230. The pressing component 250 is movably mounted on the end of the telescopic arm 240 away from the lever arm 230. The pressure adjusting component a260 is rotatably mounted between the telescopic arm 240 and the pressing component 250. The positioning shaft 280 is detachably mounted on the worktable 10. The pressure adjusting component b270 is rotatably mounted between the lever arm 230 and the positioning shaft 280.

[0028] The pressure regulating assembly a260 includes a sleeve 261, an adjusting cylinder 262, and an adjusting rod 263. The sleeve 261 is rotatably mounted on the outside of the pressing member 250, and the adjusting rod 263 is rotatably mounted on the bottom of the telescopic arm 240. One end of the adjusting cylinder 262 is sleeved on the bottom end of the adjusting rod 263 and is threadedly connected to the adjusting rod 263. The sleeve 261 is sleeved on the other end of the adjusting cylinder 262 and is threadedly connected to the adjusting cylinder 262.

[0029] Preferably, a bearing 211 is embedded between the base 210 and the rotating shaft seat 220. Specifically, the bearing 211 can reduce the friction during horizontal rotation and achieve free adjustment of the horizontal angle.

[0030] Preferably, the sleeve 261 has an internal thread a2612, the adjusting cylinder 262 has an external thread a2622, the adjusting cylinder 262 has an internal thread b2623, and the adjusting rod 263 has an external thread b2632. The internal thread a2612 is compatible with the external thread a2622, and the internal thread b2623 is compatible with the external thread b2632. The pitch of the external thread a2622 is larger than that of the external thread b2632. The adjusting cylinder 262 is fitted with an external hexagonal fitting a2621, and the adjusting rod 263 is fitted with an external hexagonal fitting b2631. Specifically, the overall length can be adjusted by rotating the sleeve 261, the adjusting cylinder 262, and the adjusting rod 263, thereby achieving the pressure adjustment effect on the support part. The pitch can achieve coarse and fine adjustment effects, achieving precise pressure adjustment.

[0031] Preferably, a universal ball joint a2611 is fixedly provided at the bottom end of the sleeve 261, a universal ball joint seat c251 is fixedly provided on the outer wall of the pressing member 250, and the universal ball joint a2611 is rotatably connected to the universal ball joint seat c251. A universal ball joint b2633 is fixedly provided at the top end of the adjusting rod 263, a universal ball joint seat b243 is fixedly provided at the bottom of the telescopic arm 240, and the universal ball joint b2633 is rotatably connected to the universal ball joint seat b243. A universal ball joint seat a231 is fixedly provided at the bottom of the lever arm 230, a universal ball joint seat d281 is fixedly provided on the positioning shaft 280, and the pressure adjusting component b270 has the same structure as the pressure adjusting component a260. The two ends of the pressure adjusting component b270 are rotatably connected to the universal ball joint seat a231 and the universal ball joint seat d281, respectively. Specifically, its universal ball connection structure gives it higher flexibility and can adapt to the fixing operation of molds of different sizes.

[0032] Preferably, a pressing head 241 and a hinge seat 242 are fixedly provided at the end of the telescopic arm 240 away from the lever arm 230, and a telescopic shaft 244 is fixedly provided at the end of the telescopic arm 240 adjacent to the lever arm 230. The telescopic shaft 244 passes through the inside of the lever arm 230 and is slidably connected to the lever arm 230. Specifically, the length of the telescopic arm 240 can be adjusted by the telescopic shaft 244 to adapt to the positioning requirements of the mold at different positions. A bolt structure for locking the telescopic shaft 244 is installed on the lever arm 230.

[0033] Preferably, a positioning component 252 is fixedly provided on one side of the pressing member 250, and a pressure sensor 253 is fixedly provided on the upper surface of the pressing member 250. The positioning component 252 includes a cylinder 2521, a spring 2522, a piston 2523, and an end cap 2524. The cylinder 2521 is fixedly provided on the outer wall of the pressing member 250. The spring 2522 and the piston 2523 are sequentially embedded in the cylinder 2521 and are movably connected to the cylinder 2521. The end cap 2524 is sleeved on the top of the cylinder 2521. The top of the piston rod of the piston 2523 is hinged to the hinge seat 242. Specifically, the positioning component 252 can prevent the telescopic arm 240 from directly transmitting pressure to the pressing member 250, thereby avoiding the detection of the pressure sensor 253 and ensuring the accuracy of pressure detection.

[0034] Preferably, the pressing head 241 is vertically aligned with the pressure sensor 253. Specifically, the pressing head 241 transmits pressure to the pressure sensor 253, which is then applied to the pressing part 250 to position the plastic mold 30, ensuring the pressure sensor 253's accuracy in detecting pressure.

[0035] Working principle: The plastic mold 30 to be processed is placed on the worktable 10, and then multiple positioning clamps 40 are used to position its four bottom corners. Subsequently, the anti-deformation positioning mechanism 20 is used to position the four top corners of the plastic mold 30 and apply pressure to fix it. When using the anti-deformation positioning mechanism 20, first fix the base 210 at an appropriate position on the worktable 10, then freely rotate and adjust the length of the telescopic arm 240 so that the pressing component 250 can match the position of the four top corners of the plastic mold 30. Next, insert the positioning shaft 280 connected to the bottom end of the pressure adjusting component b270 into the positioning hole of the worktable 10. Use external tools to adjust the pressure adjusting component a260 and... The pressure regulating component b270 adjusts the pressure applied to the plastic mold 30. The pressure is applied to the pressure sensor 253 through the pressing head 241 and finally transmitted to the pressing part 250 to fix the plastic mold 30. During this process, the pressure sensor 253 can monitor the pressure value in real time and achieve precise pressure control. It should be noted that when the pressure regulating component a260 is adjusted, an external tool is used in conjunction with the external hexagonal fitting a2621 or external hexagonal fitting b2631 to drive the adjusting cylinder 262 and the adjusting rod 263 to rotate, thereby adjusting their length and controlling the applied pressure. Due to the inconsistent pitch, the pressure can be quickly adjusted and precisely regulated.

[0036] It should be noted that, in this document, relational terms such as "first" and "second" are used only to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such a process, method, article, or apparatus. Without further limitations, an element defined by the phrase "comprising one..." does not exclude the presence of other identical elements in the process, method, article, or apparatus that includes said element.

Claims

1. A mold fixing fixture for preventing deformation during plastic mold processing, characterized in that: It includes a worktable (10), a plastic mold (30) to be processed on the worktable (10), a positioning fixture (40) installed on the worktable (10) for fixing the plastic mold (30) at four corners, and an anti-deformation positioning mechanism (20) installed on the worktable (10) for applying locking force to the plastic mold (30). The anti-deformation positioning mechanism (20) includes a base (210), a rotating shaft seat (220), a lever arm (230), a telescopic arm (240), a pressing element (250), a pressure adjusting component a (260), a pressure adjusting component b (270), and a positioning shaft (280). The base (210) is detachably mounted on the worktable (10). The rotating shaft seat (220) is sleeved on the base (210). One end of the lever arm (230) is hinged to the rotating shaft seat (220). The telescopic arm (240) is slidably mounted on the other end of the lever arm (230), the pressing member (250) is movably mounted on the end of the telescopic arm (240) away from the lever arm (230), the pressure regulating component a (260) is rotatably mounted between the telescopic arm (240) and the pressing member (250), the positioning shaft (280) is detachably mounted on the worktable (10), and the pressure regulating component b (270) is rotatably mounted between the lever arm (230) and the positioning shaft (280). The pressure regulating assembly a (260) includes a sleeve (261), an adjusting cylinder (262), and an adjusting rod (263). The sleeve (261) is rotatably mounted on the outside of the pressing member (250). The adjusting rod (263) is rotatably mounted on the bottom of the telescopic arm (240). One end of the adjusting cylinder (262) is sleeved on the bottom end of the adjusting rod (263) and is threadedly connected to the adjusting rod (263). The sleeve (261) is sleeved on the other end of the adjusting cylinder (262) and is threadedly connected to the adjusting cylinder (262).

2. The mold fixing fixture for preventing deformation in plastic mold processing according to claim 1, characterized in that: A bearing (211) is embedded between the base (210) and the rotating shaft seat (220).

3. The mold fixing fixture for preventing deformation in plastic mold processing according to claim 1, characterized in that: The sleeve (261) has an internal thread a (2612) inside, the adjusting sleeve (262) has an external thread a (2622) on the outside, the adjusting sleeve (262) has an internal thread b (2623) inside, and the adjusting rod (263) has an external thread b (2632) on the outside. The internal thread a (2612) is adapted to the external thread a (2622), the internal thread b (2623) is adapted to the external thread b (2632), the pitch of the external thread a (2622) is larger than the pitch of the external thread b (2632), the adjusting sleeve (262) is fitted with an external hexagonal fitting a (2621), and the adjusting rod (263) is fitted with an external hexagonal fitting b (2631).

4. The mold fixing fixture for preventing deformation in plastic mold processing according to claim 1, characterized in that: The bottom end of the sleeve (261) is fixedly provided with a universal ball joint a (2611), the outer wall of the pressing member (250) is fixedly provided with a universal ball joint seat c (251), the universal ball joint a (2611) is rotatably connected to the universal ball joint seat c (251), the top end of the adjusting rod (263) is fixedly provided with a universal ball joint b (2633), the bottom end of the telescopic arm (240) is fixedly provided with a universal ball joint seat b (243), the universal ball joint b (2633) is fixedly provided with a universal ball joint seat c (2633), the universal ball joint b (2633) is fixedly provided with a universal ball joint seat c (2633), the universal ball joint b (2633) is fixedly provided with a universal ball joint seat c (2633), the universal ball joint b (2633) is fixedly provided with a universal ball joint seat c (2633), the universal ball joint b (2633) is fixedly provided with a universal ball joint seat c (2633), the universal ball joint a ... 33) Rotatably connected to the universal ball joint seat b (243), the bottom of the lever arm (230) is fixedly provided with the universal ball joint seat a (231), the positioning shaft (280) is fixedly provided with the universal ball joint seat d (281), the pressure regulating component b (270) has the same structure as the pressure regulating component a (260), and the two ends of the pressure regulating component b (270) are rotatably connected to the universal ball joint seat a (231) and the universal ball joint seat d (281) respectively.

5. The mold fixing fixture for preventing deformation in plastic mold processing according to claim 1, characterized in that: The telescopic arm (240) is fixedly provided with a pressing head (241) and a hinge seat (242) at one end away from the lever arm (230), and a telescopic shaft (244) is fixedly provided at one end of the telescopic arm (240) adjacent to the lever arm (230). The telescopic shaft (244) passes through the inside of the lever arm (230) and is slidably connected to the lever arm (230).

6. The mold fixing fixture for preventing deformation in plastic mold processing according to claim 1, characterized in that: A positioning component (252) is fixedly provided on one side of the pressing member (250), and a pressure sensor (253) is fixedly provided on the upper surface of the pressing member (250). The positioning component (252) includes a cylinder (2521), a spring (2522), a piston (2523), and an end cap (2524). The cylinder (2521) is fixedly provided on the outer wall of the pressing member (250). The spring (2522) and the piston (2523) are sequentially embedded in the cylinder (2521) and are movably connected to the cylinder (2521). The end cap (2524) is sleeved on the top of the cylinder (2521). The top of the piston rod of the piston (2523) is hinged to the hinge seat (242).

7. The mold fixing fixture for preventing deformation in plastic mold processing according to claim 5, characterized in that: The pressing head (241) is vertically aligned with the pressure sensor (253).

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