Precise plastic gear mold

Abstract

The utility model relates to the technical field of plastic gear molds, in particular to a precise plastic gear mold which comprises a model frame, hydraulic rods are fixedly installed at the four corners of the surface of the model frame, an upper mold is fixedly installed at the tops of the hydraulic rods, and installation grooves are formed in the two sides of the surface of the model frame. A mounting groove is formed in the front side of the mold frame, positioning assemblies are arranged in the mounting groove, a lower mold is arranged between the positioning assemblies, a positioning groove is formed in the front side of the mold frame, a sealing cover is arranged on the surface of the positioning groove, and a pushing assembly is arranged in the positioning groove. In the using process, the hydraulic rod can drive the upper mold to move downwards, the upper mold extrudes the lower mold, and after extrusion, personnel can replace the lower mold through the positioning assembly so as to perform injection molding on gear molds with different sizes, so that the convenience of replacing different molds is improved.

Description

TECHNICAL FIELD

[0001] The utility model relates to the technical field of plastic gear mould, specifically relates to a precision plastic gear mould. BACKGROUND

[0002] Mould is various moulds and tools for obtaining required products by injection moulding, blow moulding, extruding, die casting or forging forming, smelting, stamping and the like methods in industrial production, in short, mould is a tool for making formed articles, and the tool is composed of various parts, and different moulds are composed of different parts. It realizes the machining of the shape of articles mainly through the change of the physical state of the formed material, and is called "mother of industry".

[0003] The precision plastic gear mould in the public number CN221476002U, although, including the workbench, the top of the workbench is fixedly provided with two lower moulds and electric telescopic rods respectively, the output end of the electric telescopic rod is fixedly provided with an electric rotary turntable, the top of the electric rotary turntable is fixedly provided with a connecting plate, the left and right ends of the connecting plate are fixedly provided with an upper mould and a pressing mould respectively, the inside of the upper mould is provided with a pushing assembly, the inside of the workbench is provided with an ejection assembly, the ejection assembly comprises two second motors fixedly arranged at the bottom of the inner cavity of the workbench, and the output end of the second motor is fixedly provided with a rotating rod. The precision plastic gear mould, through the setting of the ejection assembly, the articles in the lower mould can be pushed out, so that the material taking is facilitated, damage of the finished product is avoided, and through the setting of the pushing assembly, the material can be fully pushed into the teeth on the inner surface of the lower mould, so that the convex teeth on the surface of the finished product are complete, and the phenomenon of notches does not occur.

[0004] In the process of using the plastic gear mould, only one kind of plastic gear mould can be injection moulded, the plastic gear mould cannot be replaced, and when the articles are pushed out, the injection moulded articles are easily damaged due to incomplete cooling of the injection moulded articles, so that the injection moulded articles are prone to have notches or breakage. UTILITY MODEL CONTENTS

[0005] In view of the above-mentioned defects in the prior art, the utility model provides a precision plastic gear mould, which can effectively solve the problem that in the process of using the plastic gear mould in the prior art, only one kind of plastic gear mould can be injection moulded, the plastic gear mould cannot be replaced, and when the articles are pushed out, the injection moulded articles are easily damaged due to incomplete cooling of the injection moulded articles, so that the injection moulded articles are prone to have notches or breakage.

[0006] To achieve the above object, the utility model realizes the following technical scheme:

[0007] The utility model provides a kind of precision plastic gear mould, including model frame, the four corners of model frame surface are all fixedly installed with hydraulic rod, the top of hydraulic rod is fixedly installed with upper die, the both sides of model frame surface are all provided with mounting groove, the inside of mounting groove is provided with positioning assembly, positioning assembly is provided with lower die between, the front of model frame is provided with positioning groove, the surface of positioning groove is provided with sealing cover, the inside of positioning groove is provided with pusher assembly.

[0008] The four corners in the inside of mounting groove are all fixedly installed with telescopic rod, spring is sleeved on the surface of telescopic rod, one end of the opposite setting telescopic rod is fixedly installed with locating block, one end of the opposite setting telescopic rod is fixedly installed with sealing plate.

[0009] The both sides of lower die surface are all provided with guide groove, the size of guide groove and the size of locating block are compatible, and the locating block slides in the inside of guide groove.

[0010] The lower die is two separable moulds, and the surface of the mould gap is provided with a sealing plate.

[0011] The pusher assembly includes a servo motor fixedly installed in the positioning groove, the output end of the servo motor is fixedly installed with a reciprocating screw rod, the surface of the reciprocating screw rod is threadedly connected with a lifting rod, and the both sides of the surface of the lifting rod are fixedly installed with push-out blocks.

[0012] The both sides of the inside of the model frame are provided with sliding grooves, the size of the sliding grooves and the size of the two ends of the lifting rod are compatible, and the two ends of the lifting rod slide in the inside of the sliding grooves.

[0013] The push-out blocks are located below the mounting grooves, and the push-out blocks pass through the mounting grooves.

[0014] The technical scheme provided by the utility model has the following beneficial effects compared with the known prior art:

[0015] 1. By cooperating the model frame, hydraulic rod, upper die, positioning assembly and lower die, the hydraulic rod drives the upper die to move downward during use, the upper die extrudes the lower die, and personnel can replace the lower die through the positioning assembly after extrusion to injection mold gear molds of different sizes, improving the convenience of replacing different molds.

[0016] 2. By providing the lower die and the pusher assembly, after the gear model is injection molded, personnel connect the servo motor to the power supply, the output end drives the reciprocating screw rod to rotate, the reciprocating screw rod drives the push-out blocks to move up and down, the push-out blocks push out the lower die, improving the efficiency of quickly pushing out the mold. Attached Figure Description

[0017] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the description of the embodiments or the prior art 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.

[0018] Fig. 1 This is a structural diagram of the present invention;

[0019] Fig. 2 This is an exploded structural diagram of the present invention;

[0020] Fig. 3 This is a structural diagram of the driving component of this utility model;

[0021] Fig. 4 This is a structural diagram of the positioning component of this utility model.

[0022] Reference numerals: 1. Model frame; 2. Hydraulic rod; 3. Upper mold; 4. Positioning assembly; 41. Telescopic rod; 42. Spring; 43. Positioning block; 44. Sealing plate; 5. Lower mold; 6. Sealing cover; 7. Pushing assembly; 71. Servo motor; 72. Reciprocating screw; 73. Lifting rod; 74. Ejection block. Detailed Implementation

[0023] To make the objectives, technical solutions, and advantages of the embodiments of this utility model clearer, the technical solutions of the embodiments of this utility model will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some, not all, of the embodiments of this utility model. All other embodiments obtained by those skilled in the art based on the embodiments of this utility model without creative effort are within the scope of protection of this utility model.

[0024] The present invention will be further described below with reference to the embodiments.

[0025] Example: Refer to Figs. 1 to 4 A precision plastic gear mold includes a model frame 1, hydraulic rods 2 are fixedly installed at the four corners of the surface of the model frame 1, an upper mold 3 is fixedly installed on the top of the hydraulic rods 2, mounting grooves are opened on both sides of the surface of the model frame 1, positioning components 4 are arranged inside the mounting grooves, a lower mold 5 is arranged between the positioning components 4, a positioning groove is opened on the front of the model frame 1, a sealing cover 6 is provided on the surface of the positioning groove, and a pushing component 7 is arranged inside the positioning groove.

[0026] Firstly, the lower mold 5 is placed in the installation groove, then the positioning assembly 4 positions the lower mold 5, after positioning, the personnel starts the hydraulic rod 2, the hydraulic rod 2 drives the upper mold 3 to move downwards, the upper mold 3 extrudes the lower mold 5, after the lower mold 5 is extruded and formed, the pushing assembly 7 pushes out the lower mold 5.

[0027] Embodiment one:

[0028] The four corners in the installation groove are fixedly installed with telescopic rods 41, the surfaces of the telescopic rods 41 are sleeved with springs 42, one end of each of two opposite telescopic rods 41 is fixedly installed with a positioning block 43, one end of each of the other two opposite telescopic rods 41 is fixedly installed with a sealing plate 44, the surfaces of the two sides of the lower mold 5 are provided with guide grooves, the sizes of the guide grooves are matched with the sizes of the positioning blocks 43, the positioning blocks 43 slide in the guide grooves, the lower mold 5 is composed of two separable molds, and the surfaces of the mold gaps are provided with the sealing plates 44;

[0029] In use, the personnel places the lower mold 5 in the installation groove through the guide grooves, then the lower mold 5 extrudes the positioning blocks 43 and the sealing plates 44, after the positioning blocks 43 and the sealing plates 44 are extruded, the springs 42 reset due to extrusion, the positioning blocks 43 and the sealing plates 44 rebound through the telescopic rods 41, the positioning blocks 43 position the lower mold 5, and the sealing plates 44 seal the lower mold 5.

[0030] Embodiment two:

[0031] The pushing assembly 7 comprises a servo motor 71 fixedly installed in the positioning groove, an output end of the servo motor 71 is fixedly installed with a reciprocating screw rod 72, the surface of the reciprocating screw rod 72 is threadedly connected with a lifting rod 73, the surfaces of the two sides of the lifting rod 73 are fixedly installed with pushing blocks 74, the two sides in the model frame 1 are provided with sliding grooves, the sizes of the sliding grooves are matched with the sizes of the two ends of the lifting rod 73, the two ends of the lifting rod 73 slide in the sliding grooves, the pushing blocks 74 are located below the installation groove, and the pushing blocks 74 penetrate the installation groove.

[0032] In use, the personnel connects the servo motor 71 to the power supply, the output end of the servo motor 71 drives the reciprocating screw rod 72 to rotate, the reciprocating screw rod 72 drives the lifting rod 73 to move up and down when rotating, the lifting rod 73 drives the pushing blocks 74 to move up and down when moving up and down, the pushing blocks 74 are below the lower mold 5, the pushing blocks 74 push out the lower mold 5 when moving upwards, and the efficiency of pushing out the lower mold 5 is improved.

[0033] Working principle: first, the lower mold 5 is placed in the installation groove through the guide groove, then the lower mold 5 will extrude the positioning block 43 and the sealing plate 44, after the positioning block 43 and the sealing plate 44 are extruded, the spring 42 will reset due to extrusion, the positioning block 43 and the sealing plate 44 are rebounded through the telescopic rod 41, the positioning block 43 will position the lower mold 5, the sealing plate 44 seals the lower mold 5, then the servo motor 71 is connected to the power supply, the output end will drive the reciprocating screw rod 72 to rotate, when the reciprocating screw rod 72 rotates, the lifting rod 73 will move up and down, the lifting rod 73 moves up and down, the push-out block 74 will move up and down, the push-out block 74 is below the lower mold 5, when the push-out block 74 moves upward, the lower mold 5 will be pushed out, the personnel takes out the gear mold in the lower mold 5.

[0034] The above examples are only used to illustrate the technical solutions of the present application, but not to limit it; although the present application has been described in detail with reference to the foregoing examples, those skilled in the art should understand that the technical solutions recorded in the foregoing examples can still be modified, or some technical features can be replaced by equivalents; and these modifications or replacements will not make the essence of the corresponding technical solutions deviate from the protection scope of the technical solutions of the embodiments of the present application.

Claims

1. A precision plastic gear mold comprising a mold frame (1), characterized in that: The four corners of the surface of the model frame (1) are fixedly installed with hydraulic rods (2), the top of the hydraulic rod (2) is fixedly installed with an upper mold (3), the surface of the model frame (1) is provided with installation grooves on both sides, the installation grooves are provided with positioning assemblies (4) inside, the positioning assemblies (4) are provided with a lower mold (5) between them, the front of the model frame (1) is provided with a positioning groove, the surface of the positioning groove is provided with a sealing cover (6), the inside of the positioning groove is provided with a pushing assembly (7).

2. The precision plastic gear mold of claim 1, wherein, The four corners inside the installation groove are fixedly installed with telescopic rods (41), the surface of the telescopic rod (41) is sleeved with a spring (42), one end of the two oppositely arranged telescopic rods (41) is fixedly installed with a positioning block (43), one end of the other two oppositely arranged telescopic rods (41) is fixedly installed with a sealing plate (44).

3. The precision plastic gear mold of claim 1, wherein: The surface of the lower mold (5) is provided with guide grooves on both sides, the size of the guide grooves is matched with the size of the positioning block (43), and the positioning block (43) slides in the guide grooves.

4. The precision plastic gear mold of claim 1 wherein, The lower mold (5) is composed of two separable molds, and the surface of the mold gap is provided with a sealing plate (44).

5. The precision plastic gear mold of claim 1 wherein, The pushing assembly (7) comprises a servo motor (71) fixedly installed in the positioning groove, an output end of the servo motor (71) is fixedly installed with a reciprocating screw rod (72), the surface of the reciprocating screw rod (72) is threadedly connected with a lifting rod (73), and the surface of the lifting rod (73) is fixedly installed with a pushing block (74) on both sides.

6. The precision plastic gear mold of claim 1 wherein, The inside of the model frame (1) is provided with sliding grooves on both sides, the size of the sliding grooves is matched with the size of the two ends of the lifting rod (73), and the two ends of the lifting rod (73) slide in the sliding grooves.

7. The precision plastic gear mold of claim 5 wherein, The pushing block (74) is located below the installation groove, and the pushing block (74) penetrates the installation groove.

Images