Sliding block structure of injection mold

Abstract

The utility model relates to the technical field of injection molds, in particular to a sliding block structure of an injection mold. According to the technical scheme, the mold comprises a movable mold body, guide sleeves, a clamping ring and a screw rod, the guide sleeves which are symmetrically distributed are arranged at the two ends of the movable mold body, guide columns are inserted into the guide sleeves, sliding sleeves are arranged in the guide sleeves, positioning rings are arranged on the inner walls of the guide sleeves, fixing sleeves are arranged at the upper ends of the guide sleeves, and the clamping ring is arranged in the fixing sleeves. And pressing blocks are arranged at the two ends of the clamping ring correspondingly, screw holes are formed in the pressing blocks correspondingly, screw rods are rotationally inserted into the screw holes correspondingly, and threads on the outer walls of the screw rods are oppositely distributed. The clamping ring capable of being tensioned is arranged on the outer side of the sliding sleeve, after the inner wall of the sliding sleeve is abraded, the sliding sleeve and the guide column are tightly sleeved in a sliding mode through extrusion tightening, and the injection mold sliding block assembly is time-saving and convenient to maintain.

Description

Technical Field

[0001] The utility model relates to the technical field of injection molds, in particular to a slider structure of an injection mold. Background Art

[0002] An injection mold is an industrial manufacturing mold that heats and injects molten plastic material into the mold cavity, and then cools and solidifies to form products or parts of the desired shape.

[0003] The mold includes a movable mold and a fixed mold. The movable mold is moved by a driving member and guided by a slider assembly. The slider assembly includes a guide pin and a guide sleeve. The guide sleeve slides on the outer wall of the guide pin. During long-term use, the inner wall gradually wears, resulting in an increase in the gap between the guide sleeve and the guide pin, thereby affecting the docking accuracy between the movable mold and the fixed mold. Replacing the guide sleeve of the slider assembly requires a long period of downtime, which is rather cumbersome. For this reason, we propose a slider structure for an injection mold to solve the existing problem. Utility Model Content

[0004] The utility model aims to solve the problems existing in the background technology and proposes a slider structure of an injection mold.

[0005] To achieve the above-mentioned purpose, the utility model provides the following technical solutions: a slider structure of an injection mold, comprising a movable mold, a guide sleeve, a retaining ring and a screw, wherein symmetrically distributed guide sleeves are provided at both ends of the movable mold, guide pillars are inserted inside the guide sleeves, a sliding sleeve is provided inside the guide sleeves, a positioning ring is provided on the inner wall of the guide sleeve, a fixed sleeve is provided on the upper end of the guide sleeve, a retaining ring is provided inside the fixed sleeve, pressure blocks are provided at both ends of the retaining ring, screw holes are opened inside the pressure blocks, screws are rotatably inserted inside the screw holes, and the threads on the outer walls of the screws are relatively distributed.

[0006] Preferably, the outer wall of the sliding sleeve is provided with an annular slot, the slot is sleeved on the outer wall of the positioning ring, and the upper inner wall and the lower inner wall of the slot are respectively fitted with the upper and lower ends of the positioning ring. The sliding sleeve is clamped on the outer wall of the positioning ring through the slot, and the upper and lower ends are limited and firmly fixed inside the guide sleeve.

[0007] Preferably, the sliding sleeve is slidably sleeved on the outer wall of the guide column. The guide sleeve slides longitudinally on the outer wall of the guide column through the sliding sleeve.

[0008] Preferably, the snap ring is located on the outer wall of the sliding sleeve and on the inner side of the fixing sleeve, and the snap ring is in an unclosed ring shape. The unclosed opening of the snap ring allows the snap ring to shrink inwards to tighten the sliding sleeve.

[0009] Preferably, one end of the fixed sleeve is provided with symmetrically distributed travel openings, and one end of the pressing block passes through the travel openings and is located outside the fixed sleeve. The pressing block is slidably installed inside the travel openings to guide the pressing block during relative movement and effectively move in the fixed sleeve.

[0010] Preferably, a twist block is provided at one end of the screw rod, and an anti-skid pattern is provided on the outer wall of the twist block. When the screw rod is rotated, gripping the twist block facilitates force application, and the anti-skid pattern increases the friction between the gripping personnel's hand and the twist block.

[0011] Preferably, the upper end of the guide sleeve is provided with symmetrically distributed bearing brackets, and both ends of the screw rod are rotatably mounted inside the bearing brackets. The screw rod is rotatably supported at the upper end of the guide sleeve through the bearing brackets.

[0012] Compared with the prior art, the beneficial effects of the utility model are as follows:

[0013] 1. The utility model clamps and installs the sliding sleeve inside the guide sleeve, and the outer side of the sliding sleeve is sleeved with an unclosed clamping ring. The sliding sleeve contacts the outer wall of the guide column. The inner wall of the sliding sleeve wears during use. When the wear of the inner wall of the sliding sleeve causes a gap between the sliding sleeve and the guide column, which affects the guiding use of the injection mold, the screw is rotated, and the pressing block moves relatively, so that the clamping ring is relatively tightened, the sliding sleeve is squeezed inwardly, and the tightness of the sliding sleeve with the outer wall of the guide column is improved, and the injection mold continues to be used for stable guiding during the dynamic mold stroke. The slider assembly is easy to maintain during the use of the injection mold, and the downtime of the injection mold is reduced. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 It is a top view of the three-dimensional structure of the utility model;

[0015] Figure 2 This is a schematic diagram of the main three-dimensional structure of the guide sleeve of the utility model;

[0016] Figure 3 It is a top view of the three-dimensional structure of the guide sleeve of the utility model;

[0017] Figure 4 This is a schematic diagram of the main sectional three-dimensional structure of the guide sleeve of the utility model;

[0018] Figure 5 It is a schematic diagram of the three-dimensional structure of the screw rod of the utility model from a side view.

[0019] Figure numerals: 1, movable mold; 2, guide sleeve; 3, guide column; 4, sliding sleeve; 5, fixed sleeve; 6, retaining ring; 7, screw; 8, retaining groove; 9, positioning ring; 10, torsion block; 11, bearing bracket; 12, pressure block; 13, screw hole; 14, travel port. DETAILED DESCRIPTION

[0020] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0021] like Figure 1-Figure 5 As shown, the slider structure of an injection mold proposed by the utility model includes a movable mold 1, a guide sleeve 2, a clamping ring 6 and a screw 7. The movable mold 1 is provided with symmetrically distributed guide sleeves 2 at both ends, and guide pillars 3 are inserted inside the guide sleeves 2. A sliding sleeve 4 is provided inside the guide sleeve 2. The sliding sleeve 4 is slidably sleeved on the outer wall of the guide pillar 3. A positioning ring 9 is provided on the inner wall of the guide sleeve 2. An annular clamping groove 8 is opened on the outer wall of the sliding sleeve 4. The clamping groove 8 is sleeved on the outer wall of the positioning ring 9. The upper inner wall and the lower inner wall of the clamping groove 8 are respectively fitted with the upper and lower ends of the positioning ring 9. A fixing sleeve 5 is provided on the upper end of the guide sleeve 2, and a clamping ring 6 is provided inside the fixing sleeve 5. The clamping ring 6 Located on the outer wall of the sliding sleeve 4 and on the inner side of the fixed sleeve 5, the retaining ring 6 is in an unclosed ring shape, and a symmetrically distributed travel opening 14 is opened inside one end of the fixed sleeve 5. Pressure blocks 12 are provided at both ends of the retaining ring 6. One end of the pressure block 12 passes through the travel opening 14 and is located outside the fixed sleeve 5. Screw holes 13 are opened inside the pressure blocks 12, and screw rods 7 are rotatably inserted inside the screw holes 13. The threads on the outer walls of the screw rods 7 are relatively distributed. A torsion block 10 is provided at one end of the screw rod 7, and the outer wall of the torsion block 10 is provided with anti-slip grooves. Symmetrically distributed bearing brackets 11 are provided on the upper end of the guide sleeve 2, and both ends of the screw 7 are rotatably installed inside the bearing bracket 11.

[0022] The implementation steps based on Example 1: when the movable mold 1 of the injection mold moves longitudinally, the guide sleeve 2 is slidably connected to the outer wall of the guide column 3 to guide the movable mold 1, and the sliding sleeve 4 inside the guide sleeve 2 is slidably connected to the outer wall of the guide column 3, generating friction with the guide column 3. After long-term use and wear, the torsion block 10 is grasped to rotate the screw 7, and the relatively distributed threads on the outer wall of the screw 7 push the internal screw hole 13 of the pressure block 12 relatively, thereby tightening the retaining ring 6, squeezing the sliding sleeve 4, filling the gap between the sliding sleeve 4 and the guide column 3, and fitting with the outer wall of the guide column 3. When the slider structure of the injection mold is maintained, the maintenance process is easy and time-saving, reducing downtime, and almost no impact on the injection molding production line.

[0023] The above-mentioned specific embodiments are only several preferred embodiments of the present invention. Based on the technical solution of the present invention and the relevant inspiration of the above-mentioned embodiments, those skilled in the art can make various alternative improvements and combinations to the above-mentioned specific embodiments.

[0024] It is obvious to those skilled in the art that the present invention is not limited to the details of the exemplary embodiments described above, and that the present invention can be implemented in other specific forms without departing from the spirit or essential features of the present invention. Therefore, the embodiments should be regarded as exemplary and non-restrictive from any point of view, and the scope of the present invention is defined by the appended claims rather than the above description, and it is intended that all changes falling within the meaning and scope of the equivalent elements of the claims be included in the present invention. Any reference numeral in a claim should not be regarded as limiting the claim to which it relates.

Claims

1. A slider structure of an injection mold, comprising a movable mold (1), a guide sleeve (2), a clamping ring (6) and a screw (7), characterized in that: Both ends of the movable mold (1) are provided with symmetrically distributed guide sleeves (2), the guide sleeves (2) are internally inserted with guide pillars (3), the guide sleeves (2) are internally provided with sliding sleeves (4), the inner wall of the guide sleeve (2) is provided with a positioning ring (9), the upper end of the guide sleeve (2) is provided with a fixing sleeve (5), the fixing sleeve (5) is internally provided with a retaining ring (6), both ends of the retaining ring (6) are provided with pressure blocks (12), the pressure blocks (12) are internally provided with screw holes (13), the screw holes (13) are internally provided with screw rods (7) rotatably inserted, and the threads on the outer walls of the screw rods (7) are relatively distributed.

2. The slider structure of an injection mold according to claim 1, characterized in that: The outer wall of the sliding sleeve (4) is provided with an annular clamping groove (8), the clamping groove (8) is sleeved on the outer wall of the positioning ring (9), and the upper inner wall and the lower inner wall of the clamping groove (8) are respectively fitted with the upper and lower ends of the positioning ring (9).

3. The slider structure of an injection mold according to claim 1, characterized in that: The sliding sleeve (4) is slidably sleeved on the outer wall of the guide pillar (3).

4. The slider structure of an injection mold according to claim 1, characterized in that: The clamping ring (6) is located on the outer wall of the sliding sleeve (4) and on the inner side of the fixing sleeve (5), and the clamping ring (6) is in the shape of an unclosed ring.

5. The slider structure of an injection mold according to claim 1, characterized in that: One end of the fixing sleeve (5) is provided with symmetrically distributed travel openings (14), and one end of the pressing block (12) passes through the travel openings (14) and is located outside the fixing sleeve (5).

6. The slider structure of an injection mold according to claim 1, characterized in that: A twist block (10) is provided at one end of the screw rod (7), and an outer wall of the twist block (10) is provided with anti-slip grooves.

7. The slider structure of an injection mold according to claim 1, characterized in that: The upper end of the guide sleeve (2) is provided with a symmetrically distributed bearing bracket (11), and both ends of the screw rod (7) are rotatably mounted inside the bearing bracket (11).

Images