Grinding machine for machining injection mold

Abstract

The utility model relates to the technical field of mold grinding, in particular to a grinding machine for machining an injection mold, which comprises a grinding frame, a lower mold seat and a clamping cylinder are arranged on the grinding frame, a guide rod is arranged on the lower mold seat, a clamping plate is arranged on the clamping cylinder, a reciprocating cylinder is arranged on the grinding frame, a grinding barrel is arranged above the lower mold seat, and a grinding inner groove is arranged in the grinding barrel. A piston rod is arranged on the reciprocating air cylinder, a reciprocating plate is arranged on the piston rod, a positioning groove and a screw groove are formed in the reciprocating plate, a mounting seat is arranged on the polishing barrel, a screw pin is inserted into the mounting seat, a positioning block is arranged on the mounting seat, a magnetic suction head and a cap handle are arranged on the screw pin, a pressing column is arranged on the cap handle, an arc inverted face is arranged on the polishing barrel, and a rib fixing plate is arranged on the piston rod. And the grinding quality of the lower mold base of the injection mold on flashes and burrs on the outer wall face of the guide rod is improved, and the aged grinding barrel can be conveniently detached and replaced.

Description

Technical Field

[0001] This utility model relates to the field of mold grinding technology, and in particular to a grinding machine for injection mold processing. Background Technology

[0002] Injection mold processing is a mold manufacturing technology used to manufacture plastic products. In the injection molding process, molten plastic is injected into the cavity of the mold, and after cooling and solidification, it forms the desired plastic product.

[0003] After prolonged use, burrs and flash may accumulate on the outer wall of the guide rod on the lower mold base of the injection mold. This will affect the smooth vertical sliding, mold closing, and mold opening of the injection mold. Therefore, it is necessary to grind the outer wall of the guide rod on the lower mold base.

[0004] Currently, the existing method for polishing the guide rods on the lower mold base of injection molds is to manually hold polishing paper and polish them. Since the outer wall surface of the guide rod is a circular surface structure, the manual polishing method has poor stability and low polishing quality.

[0005] Therefore, a grinding device is needed for the guide rod on the lower mold base of an injection mold to solve the above problems. Utility Model Content

[0006] The purpose of this invention is to address the aforementioned shortcomings in the existing technology by proposing a grinding machine for injection mold processing.

[0007] To achieve the above objectives, the present invention adopts the following technical solution:

[0008] Design a grinding machine for injection mold processing, including a grinding frame, a lower mold base and a clamping cylinder on the grinding frame, a guide rod on the lower mold base, a clamping plate on the clamping cylinder, a reciprocating cylinder on the grinding frame, a grinding cylinder above the lower mold base, a grinding inner groove inside the grinding cylinder, a piston rod on the reciprocating cylinder, a reciprocating plate on the piston rod, a positioning groove and a screw groove on the reciprocating plate, a mounting base on the grinding cylinder, a screw pin inserted into the mounting base, and a positioning block on the mounting base;

[0009] The screw pin is provided with a magnetic head and a cap handle, and a pressure post is provided on the cap handle;

[0010] The grinding cylinder has an arc-shaped chamfer, the piston rod has a reinforcing rib, and the positioning groove has a damping layer.

[0011] Furthermore, the guide rod and the grinding cylinder are a set, and there are four sets arranged symmetrically in total. The grinding groove is vertically aligned with the guide rod.

[0012] Furthermore, the grinding inner groove is disposed in the inner wall of the grinding cylinder, the arc-shaped surface is disposed at the lower end opening corner of the grinding inner groove, and the magnetic suction head is magnetically attracted to the inner wall of the screw groove.

[0013] Furthermore, the screw pin passes through the mounting base and is threadedly connected to the screw groove, the pressure column is a symmetrically arranged cylindrical structure that presses against the mounting base, and the cap handle is an overall rhomboid structure.

[0014] Furthermore, the fixed ribs are triangular plate structures with four arranged in a circle, and the fixed ribs are respectively fixed to the reciprocating plate and the piston rod.

[0015] Furthermore, the positioning block is disposed at the top of the mounting base, and both the positioning block and the positioning groove have a regular hexagonal cross-section when viewed from above.

[0016] Furthermore, the damping layer is uniformly disposed along the inner wall of the positioning groove, and the positioning groove is damped and pressed into the positioning block through the damping layer.

[0017] The present invention provides a grinding machine for injection mold processing, which has the following advantages:

[0018] 1. This utility model, by setting up a vertical reciprocating electrically controlled reciprocating plate and setting a grinding cylinder on the reciprocating plate, realizes the overall comprehensive and effective electrically controlled up-and-down reciprocating grinding of the burrs on the outer wall surface of each guide rod, avoiding the instability of manual grinding with grinding paper, and effectively improving the grinding quality of the burrs on the outer wall surface of the guide rod on the lower mold base of the injection mold.

[0019] 2. This utility model, by setting a screw pin with a diamond-shaped cap handle, and setting a positioning groove and positioning block structure, and setting a matching screw groove structure, allows for easy removal and replacement of the aged grinding cylinder when it ages after long-term use. This improves the ease of disassembly and replacement of the grinding cylinder on the guide rod grinding device on the lower mold base of injection molds. Attached Figure Description

[0020] Figure 1 This is a three-dimensional schematic diagram of the overall structure of this utility model;

[0021] Figure 2 For the present utility model Figure 1 A three-dimensional schematic diagram of a reciprocating plate structure without a grinding cylinder;

[0022] Figure 3 For the present utility model Figure 1 First-person perspective 3D view of the grinding cylinder;

[0023] Figure 4 For the present utility model Figure 1A second-view perspective stereoscopic view of the grinding cylinder;

[0024] Figure 5 This is a front view schematic diagram of the overall structure of this utility model.

[0025] In the diagram: 1 Grinding frame; 11 Clamping cylinder; 12 Clamping plate; 2 Lower mold base; 21 Guide rod; 3 Reciprocating cylinder; 31 Piston rod; 32 Rib plate; 4 Reciprocating plate; 41 Positioning groove; 42 Damping layer; 43 Threaded groove; 5 Grinding cylinder; 51 Grinding inner groove; 52 Chamfered surface; 6 Mounting base; 61 Positioning block; 7 Screw pin; 71 Magnetic head; 8 Cap handle; 81 Pressure column. Detailed Implementation

[0026] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present utility model. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments.

[0027] Reference Figure 1-5 A grinding machine for injection mold processing includes a grinding frame 1, a lower mold base 2 and a clamping cylinder 11 on the grinding frame 1, a guide rod 21 on the lower mold base 2, a clamping plate 12 on the clamping cylinder 11, a reciprocating cylinder 3 on the grinding frame 1, a grinding cylinder 5 above the lower mold base 2, a grinding inner groove 51 inside the grinding cylinder 5, a piston rod 31 on the reciprocating cylinder 3, a reciprocating plate 4 on the piston rod 31, a positioning groove 41 and a screw groove 43 on the reciprocating plate 4, a mounting seat 6 on the grinding cylinder 5, a screw pin 7 inserted into the mounting seat 6, and a positioning block 61 on the mounting seat 6.

[0028] The screw pin 7 is provided with a magnetic head 71 and a cap handle 8, and the cap handle 8 is provided with a pressure post 81;

[0029] The grinding cylinder 5 is provided with an arc-shaped chamfered surface 52, the piston rod 31 is provided with a fixed rib plate 32, the positioning groove 41 is provided with a damping layer 42, the lower mold base 2 and the guide rod 21 are a set, which is the mold structure commonly used in injection molds, existing technology.

[0030] The piston rod 31 on the reciprocating cylinder 3 can reciprocate up and down with an adjustable distance.

[0031] The guide rod 21 and the grinding cylinder 5 are arranged as a group, and there are four groups in total that are symmetrically arranged. The grinding inner groove 51 is vertically aligned with the guide rod 21, so that the four guide rods 21 can be ground at the same time, which improves the grinding efficiency.

[0032] The grinding groove 51 is set in the inner wall of the grinding cylinder 5. The grinding groove 51 is a commonly used abrasive groove surface, which can completely grind away the burrs on the outer wall of the guide rod 21.

[0033] The curved surface 52 is located at the lower end of the opening corner of the grinding inner groove 51. The curved surface 52 facilitates the smooth downward connection of the grinding inner groove 51 onto the guide rod 21.

[0034] The magnetic head 71 is magnetically attracted to the inner wall of the screw groove 43. The magnetic head 71 is an artificial magnet that can be magnetically and stably attracted to the inner wall of the metal screw groove 43.

[0035] The screw pin 7 passes through the mounting base 6 and is threadedly connected to the screw groove 43. The pressure column 81 is a symmetrically arranged cylindrical structure that presses against the mounting base 6. The body of the pressure column 81 is made of silicone rubber and has damping friction elasticity. When the screw pin 7 and the screw groove 43 are threadedly locked, the pressure column 81 will press against the lower end face of the mounting base 6. The pressure column 81 itself will generate a vertical rebound force, which acts on the screw pin 7, improving the anti-loosening effect of the thread between the screw pin 7 and the screw groove 43.

[0036] The handle 8 has a diamond-shaped structure, which can be easily turned by hand.

[0037] The rib plate 32 is a triangular plate structure with four ribs arranged in a circle. The rib plate 32 is fixedly installed with the reciprocating plate 4 and the piston rod 31 respectively. The rib plate 32 is made of hard alloy steel, which has no deformation and further improves the structural stability between the reciprocating plate 4 and the piston rod 31.

[0038] The positioning block 61 is set at the top of the mounting base 6. The top view cross section of the positioning block 61 and the positioning groove 41 are both regular hexagonal structures. When the positioning block 61 is inserted into the positioning groove 41, the installation and positioning effect of the grinding cylinder 5 is achieved, thereby ensuring the positioning thread locking between the screw pin 7 and the screw groove 43 in the later stage.

[0039] The damping layer 42 is evenly arranged along the inner wall of the positioning groove 41. The positioning groove 41 is damped and squeezed into the positioning block 61 through the damping layer 42. The damping layer 42 is made of NBR nitrile rubber, which has high elasticity and damping friction, and can achieve damping friction and anti-slip effect with the outer wall of the positioning block 61.

[0040] Working method: After prolonged use, burrs and flash will accumulate on the outer wall of the guide rod 21 on the lower mold base 2, requiring grinding. The lower mold base 2 can be placed on the grinding frame 1. Then, the clamping cylinders 11 on both sides are activated, causing the clamping plates 12 on both sides to move in opposite directions. Once the clamping plates 12 stably clamp the outer wall of the lower mold base 2, the clamping cylinders 11 are stopped. Next, the reciprocating cylinder 3 is activated, and its piston rod 31 slides up and down along a certain vertical movement distance. By reciprocating the plate 4 and each grinding cylinder 5 along a certain vertical moving distance, the grinding inner groove 51 is fitted onto the outer wall of each guide rod 21 and moves up and down along a certain vertical moving distance, so as to achieve overall and effective electronically controlled up and down reciprocating grinding of the burrs on the outer wall of each guide rod 21. This avoids the instability of manual grinding with grinding paper and improves the grinding quality of the burrs on the outer wall of the guide rod 21 on the lower mold base 2 of the injection mold.

[0041] In addition, when a grinding cylinder 5 becomes worn out after prolonged use and needs to be replaced, the cap handle 8 can be rotated counterclockwise to rotate the screw pin 7 counterclockwise. Through the threaded transmission effect between the screw pin 7 and the screw groove 43, the screw pin 7 will move downward and exit the screw groove 43, allowing the screw pin 7 to be removed from the mounting base 6. Then, the worn-out grinding cylinder 5 can be easily and quickly removed. Next, a new grinding cylinder 5 can be taken and its mounting base 6 can be positioned and inserted into the positioning groove 41. Then, the screw pin 7 can be vertically passed through the mounting base 6 and the cap handle 8 can be rotated clockwise to rotate the screw pin 7 clockwise and lock it with the thread in the screw groove 43. This completes the easy installation and replacement, improving the ease of disassembly and replacement of the grinding cylinder 5 on the grinding device of the guide rod 21 on the lower mold base 2 of the injection mold.

[0042] The above description is only a preferred embodiment of the present utility model, but the protection scope of the present utility model is not limited thereto. Any equivalent substitutions or changes made by those skilled in the art within the technical scope disclosed in the present utility model, based on the technical solution and the inventive concept of the present utility model, should be included within the protection scope of the present utility model.

Claims

1. A sander for injection mold processing, comprising a sander frame (1), characterized in that: The polishing frame (1) is provided with a lower die seat (2) and a clamping cylinder (11), the lower die seat (2) is provided with a guide rod (21), the clamping cylinder (11) is provided with a clamping plate (12), the polishing frame (1) is provided with a reciprocating cylinder (3), the upper portion of the lower die seat (2) is provided with a polishing cylinder (5), the polishing cylinder (5) is provided with a polishing inner groove (51), the reciprocating cylinder (3) is provided with a piston rod (31), the piston rod (31) is provided with a reciprocating plate (4), the reciprocating plate (4) is provided with a positioning groove (41) and a screw groove (43), the polishing cylinder (5) is provided with a mounting seat (6), the mounting seat (6) is provided with a screw pin (7), and the mounting seat (6) is provided with a positioning block (61). The screw pin (7) is provided with a magnetic head (71) and a cap handle (8), and the cap handle (8) is provided with a pressing column (81). The polishing cylinder (5) is provided with an arc reverse surface (52), the piston rod (31) is provided with a fixed rib plate (32), and the positioning groove (41) is provided with a damping layer (42).

2. A sander for processing injection molds according to claim 1, characterized in that: The guide rod (21) and the polishing cylinder (5) are a group, and a total of four groups are symmetrically arranged, and the polishing inner groove (51) is vertically aligned with the guide rod (21).

3. The sander for processing of injection molds according to claim 1, characterized in that: The polishing inner groove (51) is arranged in the inner cavity wall of the polishing cylinder (5), the arc reverse surface (52) is arranged at the lower end opening corner of the polishing inner groove (51), and the magnetic head (71) is magnetically adsorbed with the inner wall of the screw groove (43).

4. The sander for processing of injection molds according to claim 1, characterized in that: The screw pin (7) passes through the mounting seat (6) and is screw-connected with the screw groove (43), the pressing column (81) is a cylindrical structure and is in extrusion contact with the mounting seat (6), and the cap handle (8) is a rhombus structure.

5. The sander for processing of injection molds according to claim 1, characterized in that: The fixed rib plate (32) is a triangular plate structure and is arranged in a circular manner, and the fixed rib plate (32) is fixedly arranged with the reciprocating plate (4) and the piston rod (31).

6. The sander for processing of injection molds according to claim 1, characterized in that: The positioning block (61) is arranged at the top end of the mounting seat (6), and the positioning block (61) and the positioning groove (41) are both hexagonal structures in plan view.

7. The sander for processing injection molds according to claim 1, characterized in that: The damping layer (42) is uniformly arranged along the inner groove wall of the positioning groove (41), and the positioning groove (41) is in damping extrusion insertion with the positioning block (61) through the damping layer (42).

Images