A special tooling fixture for plastic mold processing

Abstract

The present application discloses a special tooling fixture for plastic mold processing, which relates to the technical field of machine tool fixtures, and includes a machine tool base, a clamping assembly and a transmission control assembly; the machine tool base includes a work surface and a machine tool mounting arm, and the machine tool mounting arm is fixedly connected to one side of the work surface; the clamping assembly includes a hydraulic pipeline and a clamping part; the clamping head is rotatably connected to an articulated shaft, and the articulated shaft is rotatably connected to a support rod, and the articulated shaft sleeve is provided with a cylindrical helical torsion spring, one end of the cylindrical helical torsion spring is fixedly connected to the clamping head, and the other end of the cylindrical helical torsion spring is fixedly connected to the support rod, and the support rod is hinged with a push plate; the clamping head is also fixedly connected to a protrusion, and the protrusion is arranged on the lower side of the support rod near one end of the push plate, and the protrusion is used to lift one end of the support rod; it can achieve the effect of avoiding friction and wear on the bottom surface of the plastic mold during the clamping and moving process.

Description

Technical Field

[0001] The invention relates to the technical field of machine tool fixtures, and in particular to a special tooling fixture for plastic mold processing. Background Art

[0002] When using machine tools to process parts, fixtures are needed to position and clamp the workpiece. The conventional method for the later finishing of injection molds is to use machine tools for processing, and the positioning and clamping are completed by fixtures before processing, and then the tool is aligned and the processing is completed according to the design program.

[0003] A Chinese patent document with authorization announcement number CN115464430B discloses a precision machining fixture for injection molds, wherein the transmission control components of the fixture include a gear, a first rack, a second rack, and a push spring, the axle of the gear passes through a sliding block and a top block and is rotatably connected to the sliding block and the top block, the gear is clamped between the first rack and the second rack and is meshed with the first rack and the second rack, the axle of the gear passes through the sliding block and the top block and is rotatably connected to the sliding block and the top block, the gear is clamped between the first rack and the second rack and is meshed with the first rack and the second rack, The clamping arm and the push plate of the clamping assembly are hinged. The clamping arm is initially at a preset angle with the push plate and extends inwardly from bottom to top. When the transmission control assembly controls the clamping assembly to move inward, a group of clamping assemblies close to the injection mold first contacts the injection mold. The clamping assembly on this side is subjected to resistance, causing the corresponding rack to brake, so that the gear moves along the rack, causing the clamping assembly on the other side to move until the injection mold is clamped on both sides. Then, the clamping arm provides an upward supporting force for the injection mold, thereby reducing the friction between the injection mold and the machine tool base during mobile clamping, thereby reducing the wear of the injection mold.

[0004] However, during the actual use of the above solution, although the friction between the plastic mold and the work surface is reduced, it is still a dynamic friction behavior that produces relative displacement, so that the plastic mold will still produce friction and wear when the fixture is pushed to the center. Summary of the invention

[0005] The present application provides a special tooling fixture for plastic mold processing, which solves the problem in the prior art that when the plastic mold is pushed to the center by the fixture, there is dynamic friction between the plastic mold and the work surface, which causes friction and wear on the bottom surface of the plastic mold, thereby achieving the effect of avoiding friction and wear on the bottom surface of the plastic mold during the clamping and moving process.

[0006] The present application provides a special tooling fixture for plastic mold processing, including a machine tool base, a clamping component and a transmission control component;

[0007] The machine tool base includes a work surface and a machine tool mounting arm, and the machine tool mounting arm is fixedly connected to one side of the work surface;

[0008] The clamping assembly includes a hydraulic pipeline and a clamping portion;

[0009] The hydraulic pipeline is fixedly connected to the work surface, and the interior of the hydraulic pipeline is filled with hydraulic oil, and the hydraulic oil is used to push the clamping part;

[0010] The clamping part is slidably connected to the hydraulic pipeline, the clamping part is used to clamp the plastic mold, and the clamping part includes a clamping head;

[0011] The clamping head is slidably connected to the work surface;

[0012] The clamping head is rotatably connected to a hinge shaft, the hinge shaft is rotatably connected to a support rod, the hinge shaft sleeve is provided with a cylindrical helical torsion spring, one end of the cylindrical helical torsion spring is fixedly connected to the clamping head, the other end of the cylindrical helical torsion spring is fixedly connected to the support rod, and the support rod is hinged with a push plate;

[0013] The clamping head is also fixedly connected with a protrusion, which is arranged on the lower side of the support rod close to one end of the push plate, and the protrusion is used to lift one end of the support rod;

[0014] The transmission control assembly includes an electric telescopic rod, a balancing push rod and a guide rail;

[0015] The electric telescopic rod is fixedly connected to one side below the work surface, and the electric telescopic rod includes a connecting end, and the connecting end is used to push the balancing push rod;

[0016] The center of the balancing push rod is rotatably connected to the electric telescopic rod, the balancing push rod includes slide grooves arranged at both ends thereof, the balancing push rod is used to drive the guide rail, the center of the balancing push rod is fixedly connected with a rotating shaft, the rotating shaft is rotatably connected to the connecting end, a plane scroll spring is further arranged between the rotating shaft and the connecting end, and when the plane scroll spring is naturally relaxed, the balancing push rod and the connecting end are perpendicular to each other;

[0017] The guide rail is fixedly connected to the bottom of the work surface, and is in the shape of a hollow rod. The guide rail includes a push rod 1 slidably connected to the inner side thereof, and the push rod 1 is used to push the hydraulic oil inside the hydraulic pipeline. The guide rail is arranged at both ends of the balance push rod.

[0018] Furthermore, the hydraulic pipeline includes an active drive pipe, a connecting pipe and a passive drive pipe;

[0019] The active drive tube is arranged on the lower side of the work surface, and the active drive tube is in a straight tube shape;

[0020] The connecting pipe passes through the work surface, and is used to connect the active driving pipe and the passive driving pipe;

[0021] The passive driving tube is arranged on the upper side of the work table, the passive driving tube is in a straight tube shape, and the passive driving tube is used to push the clamping part.

[0022] Furthermore, the clamping portion further includes a second push rod and a second piston block;

[0023] The push rod 2 is slidably connected to the interior of the passive driving tube, and the push rod 2 is fixedly connected to one end of the passive driving tube;

[0024] The second piston block is fixedly connected to one end of the second push rod, the second piston block is slidably connected to the inside of the passive drive tube, the second piston block is sealed with the inner wall of the passive drive tube, and the second piston block is used to push the second push rod.

[0025] Furthermore, one end of the push rod 1 close to the active drive tube is fixedly connected to a piston block 1, the piston block 1 is slidably connected to the active drive tube, the piston block 1 is sealed against the inner wall of the active drive tube, the piston block 1 is used to push the sealing oil inside the active drive tube, and the other end of the push rod 1 is fixedly connected to a cylindrical slider, and the cylindrical slider is slidably connected to the slide groove.

[0026] Furthermore, the hinge shaft is axially arranged horizontally, the support rod is restricted by the hinge shaft and the protrusion and arranged tilted, and the cylindrical helical torsion spring provides elastic force for the support rod to rotate downward.

[0027] Furthermore, the push plate further comprises a rubber roller, which is cylindrical and vertically arranged axially, and is rotatably connected to the push plate.

[0028] Furthermore, the rotating shaft also includes a movable groove and an inclined slider. The movable groove is arranged on one side of the connection between the rotating shaft and the connecting end. The movable groove is eccentrically arranged. The bottom surface of the movable groove is inclined so that the outer side is higher than the inner side. The inclined slider is slidably connected to the inside of the movable groove. The bottom surface of the inclined slider is inclined to match the bottom surface of the movable groove. When the inclined slider is stationary, it slides to the lowest point of the movable groove under the action of gravity.

[0029] Furthermore, the connecting end is also provided with a release groove, and the release groove is arranged at the connection between the connecting end and the rotating shaft, and the release groove is used to provide a space for the inclined slider to slide.

[0030] Furthermore, the release slot is also provided with a groove, and limit baffles are hinged on both sides of the groove, and the rotation of the limit baffle is limited by the side walls of the groove.

[0031] Furthermore, an elastic plate is provided between the limit baffles, and the elastic plate provides elastic support to the limit baffles.

[0032] One or more technical solutions provided in this application have at least the following technical effects or advantages:

[0033] The plastic mold is clamped and lifted by a clamping assembly to separate the plastic mold from 110 , so that during the clamping and moving process of the plastic mold, its bottom surface avoids dynamic friction with 110 , thereby eliminating friction and wear on the bottom during the centering process of the plastic mold. BRIEF DESCRIPTION OF THE DRAWINGS

[0034] Figure 1 The three-dimensional structure of a special tooling fixture for plastic mold processing of the present invention is shown in FIG. Figure 1 ;

[0035] Figure 2 The three-dimensional structure of a special tooling fixture for plastic mold processing of the present invention is shown in FIG. Figure 2 ;

[0036] Figure 3 The position relationship between the clamping component and the transmission control component of a special tooling fixture for plastic mold processing of the present invention Figure 1 ;

[0037] Figure 4 The position relationship between the clamping component and the transmission control component of a special tooling fixture for plastic mold processing of the present invention Figure 2 ;

[0038] Figure 5 The position relationship between the clamping component and the transmission control component of a special tooling fixture for plastic mold processing of the present invention Figure 3 ;

[0039] Figure 6 The structure of the transmission control assembly of a special tooling fixture for plastic mold processing of the present invention is schematically shown. Figure 1 ;

[0040] Figure 7 The structure of the transmission control assembly of a special tooling fixture for plastic mold processing of the present invention is schematically shown. Figure 2 ;

[0041] Figure 8 It is a structural schematic diagram of a balancing push rod of a special tooling fixture for plastic mold processing of the present invention;

[0042] Fig. 9 It is a partial result schematic diagram of a clamping assembly of a special tooling fixture for plastic mold processing of the present invention;

[0043] Fig.10 The structure of the clamping head of a special tooling fixture for plastic mold processing of the present invention is schematically shown. Figure 1 ;

[0044] Fig.11 The structure of the clamping head of a special tooling fixture for plastic mold processing of the present invention is schematically shown. Figure 2;

[0045] Fig.12 This is a structural schematic diagram of a connecting end and a rotating shaft of a special tooling fixture for plastic mold processing of the present invention;

[0046] Fig.13 A cross-sectional view of the connecting end and the rotating shaft of a special tooling fixture for plastic mold processing of the present invention Figure 1 ;

[0047] Fig.14 for Fig.13 The enlarged view of point A in the middle;

[0048] Fig.15 A cross-sectional view of the connecting end and the rotating shaft of a special tooling fixture for plastic mold processing of the present invention Figure 2 ;

[0049] Fig.16 A cross-sectional view of the connecting end and the rotating shaft of a special tooling fixture for plastic mold processing of the present invention Figure 3 ;

[0050] Fig.17 The present invention is a schematic diagram of a rotary shaft resetting process of a special tooling fixture for plastic mold processing.

[0051] In the figure:

[0052] 100. Machine tool base; 110. Work table; 120. Machine tool mounting arm;

[0053] 200, clamping assembly; 210, hydraulic pipeline; 211, active drive pipe; 212, connecting pipe; 213, passive drive pipe; 220, clamping part; 221, push rod 2; 222, piston block 2; 223, clamping head; 224, hinge shaft; 225, support rod; 226, cylindrical helical torsion spring; 227, bump; 228, push plate; 229, rubber roller;

[0054] 300, transmission control assembly; 310, electric telescopic rod; 311, connecting end; 3111, release groove; 3112, limit baffle; 3113, elastic plate; 312, plane scroll spring; 320, balance push rod; 321, slide groove; 322, rotating shaft; 3221, movable groove; 3222, inclined slider; 330, guide rail; 331, push rod 1; 332, piston block 1; 333, cylindrical slider. DETAILED DESCRIPTION

[0055] To facilitate the understanding of the present invention, the present application will be described more comprehensively below with reference to the relevant drawings; the drawings show preferred embodiments of the present invention, but the present invention can be implemented in many different forms and is not limited to the embodiments described herein; on the contrary, the purpose of providing these embodiments is to enable a more thorough and comprehensive understanding of the disclosed content of the present invention.

[0056] It should be noted that the terms “vertical”, “horizontal”, “up”, “down”, “left”, “right” and similar expressions used in this document are only for illustrative purposes and do not represent the only implementation method.

[0057] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by technicians in the technical field to which the present invention belongs; the terms used in the specification of the present invention are only for the purpose of describing specific embodiments and are not intended to limit the present invention; the term "and / or" used herein includes any and all combinations of one or more related listed items.

[0058] Embodiment 1: Figure 1-Figure 10 As shown, the present application is a special tooling fixture for plastic mold processing, which includes a machine tool base 100, a clamping assembly 200 and a transmission control assembly 300;

[0059] The machine tool base 100 includes a work surface 110 and a machine tool mounting arm 120, and the machine tool mounting arm 120 is fixedly connected to one side of the work surface 110;

[0060] The clamping assembly 200 includes a hydraulic pipeline 210 and a clamping portion 220;

[0061] The hydraulic pipeline 210 is fixedly connected to the work surface 110 , and the hydraulic pipeline 210 is filled with hydraulic oil, and the hydraulic oil is used to push the clamping part 220 ;

[0062] The clamping part 220 is slidably connected to the hydraulic pipe 210, and the clamping part 220 is used to clamp the plastic mold. The clamping part 220 includes a clamping head 223;

[0063] The clamping head 223 is slidably connected to the work surface 110;

[0064] The clamping head 223 is rotatably connected to a hinge shaft 224, and the hinge shaft 224 is rotatably connected to a support rod 225. The hinge shaft 224 is sleeved with a cylindrical helical torsion spring 226, one end of the cylindrical helical torsion spring 226 is fixedly connected to the clamping head 223, and the other end of the cylindrical helical torsion spring 226 is fixedly connected to the support rod 225, and the support rod 225 is hinged with a push plate 228;

[0065] The clamping head 223 is also fixedly connected with a protrusion 227, which is arranged on the lower side of the support rod 225 close to one end of the push plate 228, and the protrusion 227 is used to lift one end of the support rod 225;

[0066] The transmission control assembly 300 includes an electric telescopic rod 310, a balancing push rod 320 and a guide rail 330;

[0067] The electric telescopic rod 310 is fixedly connected to one side below the work surface 110, and the electric telescopic rod 310 includes a connecting end 311, and the connecting end 311 is used to push the balancing push rod 320;

[0068] The center of the balancing push rod 320 is rotatably connected to the electric telescopic rod 310. The balancing push rod 320 includes slide grooves 321 arranged at both ends thereof. The balancing push rod 320 is used to drive the guide rail 330. The center of the balancing push rod 320 is fixedly connected with a rotating shaft 322. The rotating shaft 322 is rotatably connected to the connecting end 311. A plane scroll spring 312 is also arranged between the rotating shaft 322 and the connecting end 311. When the plane scroll spring 312 is naturally relaxed, the balancing push rod 320 and the connecting end 311 are perpendicular to each other.

[0069] The guide rail 330 is fixedly connected to the bottom of the work surface 110 . The guide rail 330 is in the shape of a hollow rod. The guide rail 330 includes a push rod 331 slidably connected to the inner side thereof. The push rod 331 is used to push the hydraulic oil inside the hydraulic pipeline 210 . The guide rail 330 is arranged at both ends of the balance push rod 320 .

[0070] Furthermore, the hydraulic pipeline 210 includes an active drive pipe 211, a connecting pipe 212 and a passive drive pipe 213;

[0071] The active driving tube 211 is disposed on the lower side of the work surface 110, and the active driving tube 211 is in a straight tube shape;

[0072] The connecting pipe 212 passes through the work surface 110 and is used to connect the active driving pipe 211 and the passive driving pipe 213;

[0073] The passive driving tube 213 is disposed on the upper side of the work surface 110 . The passive driving tube 213 is in a straight tube shape. The passive driving tube 213 is used to push the clamping part 220 .

[0074] Furthermore, the clamping portion 220 further includes a second push rod 221 and a second piston block 222;

[0075] The second push rod 221 is slidably connected to the interior of the passive driving tube 213, and the second push rod 221 is fixedly connected to one end of the passive driving tube 213;

[0076] The second piston block 222 is fixedly connected to one end of the second push rod 221 , and the second piston block 222 is slidably connected to the inside of the passive drive tube 213 . The second piston block 222 is sealed with the inner wall of the passive drive tube 213 , and the second piston block 222 is used to push the second push rod 221 .

[0077] Furthermore, one end of the push rod 331 close to the active drive tube 211 is fixedly connected to a piston block 332, and the piston block 332 is slidably connected to the active drive tube 211. The piston block 332 is sealed against the inner wall of the active drive tube 211, and the piston block 332 is used to push the sealing oil inside the active drive tube 211. The other end of the push rod 331 is fixedly connected to a cylindrical slider 333, and the cylindrical slider 333 is slidably connected to the slide groove 321.

[0078] Furthermore, the hinge shaft 224 is axially arranged horizontally, and the support rod 225 is restricted by the hinge shaft 224 and the protrusion 227 to be arranged tilted, and the cylindrical helical torsion spring 226 provides elastic force for the support rod 225 to rotate downward.

[0079] The steps of the special tooling fixture for plastic mold processing in the embodiment of the present application are as follows during actual operation:

[0080] First, the electric telescopic rod 310 is started, and the electric telescopic rod 310 pushes the balancing push rod 320, and the balancing push rod 320 pushes the cylindrical sliders 333 on both sides thereof to slide in the guide rail 330, and the cylindrical sliders 333 push the push rod 1 331, and the push rod 1 331 pushes the piston block 1 332 to slide in the active drive tube 211, and the piston block 1 332 pushes the hydraulic oil in the active drive tube 211, and then the hydraulic oil enters the passive drive tube 213 through the connecting tube 212 to push the piston block 222, so that the clamping part 220 is close to the plastic mold. When the plastic mold When the placement position is off-center, one side of the clamping part 220 contacts the plastic mold first. Due to the static friction resistance between the plastic mold and the work surface 110, the resistance of the clamping components 200 on both sides is different. As a result, when the electric telescopic rod 310 continues to advance, one of the cylindrical sliders 333 brakes, causing the balance push rod 320 to rotate and only push the other cylindrical slider 333. When both sets of clamping parts 220 contact the plastic mold, the driving force of the electric telescopic rod 310 continues to increase, and the clamping force of the clamping part 220 on the plastic mold increases accordingly. The force is in the horizontal direction, and the hinge of the support rod 225 and the push plate 228 is subjected to the reaction force of the clamping force. Due to the inclined arrangement of the support rod 225, the reaction force does not pass through the center of the hinge shaft 224, thereby generating a torque. The torque generated by the cylindrical helical torsion spring 226 on the support rod 225 is offset by the support of the protrusion 227. When the torque provided by the reaction force is sufficient to offset the preset torque of the cylindrical helical torsion spring 226, the clamping force of the push plate 228 on the plastic mold is sufficient to generate a static friction force to lift the mold, and the electric telescopic The push force of the rod 310 causes the support rod 225 to start to rotate, causing the push plate 228 to move upward, the torque of the cylindrical spiral torsion spring 226 to increase, and the force balance is restored. The static friction between the push plate 228 and the plastic mold lifts the plastic mold and separates it from the work surface 110. The friction between the plastic mold and the work surface 110 suddenly disappears, and the resistance on both sides of the balance push rod 320 returns to balance. The balance push rod 320 returns to the balanced position under the elastic action of the plane scroll spring 312, and then pushes the plastic mold to the center of the work surface 110.

[0081] The technical solutions in the above embodiments of the present application have at least the following technical effects or advantages:

[0082] The plastic mold is clamped and lifted by the clamping assembly 200 to separate the plastic mold from the work surface 110 , so that during the clamping and moving process of the plastic mold, its bottom surface avoids dynamic friction with the work surface 110 , thereby eliminating friction and wear on the bottom of the plastic mold during centering.

[0083] Embodiment 2: During the centering process of the plastic mold in the above embodiment, it is necessary to center the mold in two directions separately to avoid dynamic friction and wear of the side wall, which reduces the work efficiency. The embodiment of the present application is optimized based on the above embodiment.

[0084] like Fig.11 As shown, the push plate 228 further includes a rubber roller 229 . The rubber roller 229 is cylindrical and vertically arranged axially. The rubber roller 229 is rotatably connected to the push plate 228 .

[0085] The technical solutions in the above embodiments of the present application have at least the following technical effects or advantages:

[0086] By arranging a rubber roller 229 on the push plate 228, the rubber roller 229 clamps the side wall of the plastic mold, and can only provide static friction in the vertical direction to the side wall of the plastic mold. When the clamp in the other direction pushes the plastic mold to move, the rubber roller 229 rotates accordingly due to the static friction force, so that centering in two directions can be carried out simultaneously, thereby improving the efficiency of clamping and positioning.

[0087] Embodiment 3: The centering of the plastic mold by the clamp in the above embodiment depends on the resetting of the plane scroll spring 312. However, although the friction between the plastic mold and the work surface 110 disappears, there are still resistances such as hydraulic oil flow damping and friction between parts, which cause damped vibration to form at the plane scroll spring 312, and it will not return to its original position in the end. Even if these dampings are ignored under ideal conditions, simple harmonic vibration will be formed, and it is impossible to stop and center. The embodiment of the present application is optimized on the basis of the above embodiment.

[0088] like Figure 12-17 As shown, the rotating shaft 322 also includes a movable groove 3221 and an inclined slider 3222. The movable groove 3221 is arranged on one side of the connection between the rotating shaft 322 and the connecting end 311. The movable groove 3221 is eccentrically arranged. The bottom surface of the movable groove 3221 is inclined so that the outer side is higher than the inner side. The inclined slider 3222 is slidably connected to the inside of the movable groove 3221. The bottom surface of the inclined slider 3222 is inclined to match the bottom surface of the movable groove 3221. When the inclined slider 3222 is stationary, it slides to the lowest point of the movable groove 3221 under the action of gravity.

[0089] Furthermore, the connection end 311 is further provided with a release groove 3111 , and the release groove 3111 is provided at the connection between the connection end 311 and the rotating shaft 322 , and the release groove 3111 is used to provide a space for the inclined sliding block 3222 to slide.

[0090] Furthermore, the release slot 3111 is also provided with a groove, and limit baffles 3112 are hinged on both sides of the groove, and the rotation of the limit baffles 3112 is limited by the side walls of the groove.

[0091] Furthermore, an elastic plate 3113 is provided between the limit baffles 3112 , and the elastic plate 3113 provides elastic support to the limit baffles 3112 .

[0092] The technical solutions in the above embodiments of the present application have at least the following technical effects or advantages:

[0093] By opening a movable groove 3221 on the rotating shaft 322 and arranging an inclined slider 3222 therein, the rotating shaft 322 is allowed to partially slide out of the movable groove 3221 under the elastic rebound action of the planar volute spring 312 due to the centrifugal action, and collide with the limit baffle 3112 in the release groove 3111 for braking, so that the rotating shaft 322 stops at its equilibrium position, thereby eliminating the damping vibration of the planar volute spring 312 and achieving centering quickly and accurately.

[0094] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. For those skilled in the art, the present invention may have various modifications and variations. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present invention shall be included in the protection scope of the present invention.

Claims

1. A special tooling fixture for plastic mold processing, characterized in that: It comprises a machine tool base (100), a clamping assembly (200) and a transmission control assembly (300); The machine tool base (100) comprises a work surface (110) and a machine tool mounting arm (120), wherein the machine tool mounting arm (120) is fixedly connected to one side of the work surface (110); The clamping assembly (200) comprises a hydraulic pipeline (210) and a clamping portion (220); The hydraulic pipeline (210) is fixedly connected to the work surface (110), and the hydraulic pipeline (210) is filled with hydraulic oil, and the hydraulic oil is used to push the clamping part (220); The clamping part (220) is slidably connected to the hydraulic pipe (210), the clamping part (220) is used to clamp the plastic mold, and the clamping part (220) includes a clamping head (223); The clamping head (223) is slidably connected to the work surface (110); The clamping head (223) is rotatably connected to a hinge shaft (224), and the hinge shaft (224) is rotatably connected to a support rod (225). The hinge shaft (224) is sleeved with a cylindrical helical torsion spring (226), and one end of the cylindrical helical torsion spring (226) is fixedly connected to the clamping head (223), and the other end of the cylindrical helical torsion spring (226) is fixedly connected to the support rod (225), and the support rod (225) is hingedly connected to a push plate (228); the clamping head (223) is also fixedly connected to a convex block (227), and the convex block (227) is arranged on the lower side of one end of the support rod (225) close to the push plate (228), and the convex block (227) is used to lift one end of the support rod (225); the transmission control component (300) includes an electric telescopic rod (310), a balancing push rod (320) and a guide rail (330); The electric telescopic rod (310) is fixedly connected to one side below the work surface (110), and the electric telescopic rod (310) includes a connecting end (311), and the connecting end (311) is used to push the balancing push rod (320); the center of the balancing push rod (320) is rotatably connected to the electric telescopic rod (310), and the balancing push rod (320) includes a slide groove (321) provided at both ends thereof, and the balancing push rod (320) is used to drive the guide rail (330); the center of the balancing push rod (320) is fixedly connected to a rotating shaft (322), and the rotating shaft (322) is rotatably connected to the connecting end (311), and a plane scroll spring (312) is further provided between the rotating shaft (322) and the connecting end (311), and when the plane scroll spring (312) is naturally relaxed, the balancing push rod (320) and the connecting end (311) are perpendicular to each other; The guide rail (330) is fixedly connected to the bottom of the work surface (110). The guide rail (330) is in the shape of a hollow rod. The guide rail (330) includes a push rod (331) slidably connected to the inner side thereof. The push rod (331) is used to push the hydraulic oil inside the hydraulic pipeline (210). The guide rail (330) is arranged at both ends of the balancing push rod (320).

2. A special tooling fixture for plastic mold processing as claimed in claim 1, characterized in that: The hydraulic pipeline (210) comprises an active drive pipe (211), a connecting pipe (212) and a passive drive pipe (213); the active drive pipe (211) is arranged on the lower side of the work surface (110), and the active drive pipe (211) is in the shape of a straight pipe; The connecting pipe (212) passes through the work surface (110), and the connecting pipe (212) is used to connect the active driving pipe (211) and the passive driving pipe (213); The passive drive tube (213) is arranged on the upper side of the work surface (110); the passive drive tube (213) is in the shape of a straight tube; and the passive drive tube (213) is used to push the clamping portion (220).

3. A special tooling fixture for plastic mold processing as claimed in claim 2, characterized in that: Furthermore, the clamping portion (220) further includes a second push rod (221) and a second piston block (222); The second push rod (221) is slidably connected to the interior of the passive drive tube (213), and the second push rod (221) is fixedly connected to one end of the passive drive tube (213); The second piston block (222) is fixedly connected to one end of the second push rod (221), and the second piston block (222) is slidably connected to the inside of the passive drive tube (213). The second piston block (222) and the inner wall of the passive drive tube (213) are sealed, and the second piston block (222) is used to push the second push rod (221).

4. A special tooling fixture for plastic mold processing as claimed in claim 3, characterized in that: Furthermore, one end of the push rod (331) close to the active drive tube (211) is fixedly connected to a piston block (332), the piston block (332) is slidably connected to the active drive tube (211), the piston block (332) is sealed against the inner wall of the active drive tube (211), the piston block (332) is used to push the sealing oil inside the active drive tube (211), and the other end of the push rod (331) is fixedly connected to a cylindrical slider (333), and the cylindrical slider (333) is slidably connected to the slide groove (321).

5. A special tooling fixture for plastic mold processing as claimed in claim 4, characterized in that: The hinge shaft (224) is axially arranged horizontally, the support rod (225) is restricted by the hinge shaft (224) and the protrusion (227) and is arranged tilted, and the cylindrical helical torsion spring (226) provides the support rod (225) with elastic force to rotate downward.

6. A special tooling fixture for plastic mold processing as claimed in claim 5, characterized in that: The push plate (228) further comprises a rubber roller (229), the rubber roller (229) is cylindrical, the rubber roller (229) is axially arranged vertically, and the rubber roller (229) is rotatably connected to the push plate (228).

7. A special tooling fixture for plastic mold processing as claimed in claim 6, characterized in that: The rotating shaft (322) further comprises a movable groove (3221) and an inclined sliding block (3222); the movable groove (3221) is arranged at one side of the connection between the rotating shaft (322) and the connecting end (311); the movable groove (3221) is eccentrically arranged; the bottom surface of the movable groove (3221) is inclined such that the outer side is higher than the inner side; the inclined sliding block (3222) is slidably connected to the inside of the movable groove (3221); the bottom surface of the inclined sliding block (3222) is inclined so as to match the bottom surface of the movable groove (3221); and when the inclined sliding block (3222) is stationary, it slides to the lowest point of the movable groove (3221) under the action of gravity.

8. A special tooling fixture for plastic mold processing as claimed in claim 7, characterized in that: The connecting end (311) is also provided with a release groove (3111), and the release groove (3111) is provided at the connection between the connecting end (311) and the rotating shaft (322), and the release groove (3111) is used to provide a space for the inclined sliding block (3222) to slide.

9. A special tooling fixture for plastic mold processing as claimed in claim 8, characterized in that: The release slot (3111) is also provided with a groove, and limit baffles (3112) are hingedly connected on both sides of the groove, and the rotation of the limit baffles (3112) is limited by the side walls of the groove.

10. A special tooling fixture for plastic mold processing as claimed in claim 9, characterized in that: An elastic plate (3113) is also provided between the limit baffles (3112), and the elastic plate (3113) provides elastic support to the limit baffles (3112).

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