Guide pillar and guide sleeve for mold alignment

Abstract

The invention relates to the technical field of guide columns and guide sleeves, in particular to a guide column and guide sleeve for mold alignment, and solves the problems that a guide column and a guide sleeve are of an integral structure and need to be integrally replaced after being abraded, the replacement cost is high, and lubricant is inconvenient to add between the guide column and the guide sleeve. The guide pillar and guide sleeve for mold alignment comprises a guide pillar and a guide sleeve, the guide sleeve is slidably arranged on the outer side of the guide pillar in a sleeving mode, the guide pillar comprises a center pillar body, two replacement pillar bodies are detachably installed on the outer side of the center pillar body, separation guide inclined grooves are formed in the side edges of the two replacement pillar bodies, and the guide sleeve comprises a center guide sleeve. The inner side of the center guide sleeve is provided with a plurality of sets of assembled guide sleeve pieces which are vertically symmetrical in pairs, and the assembled guide sleeve pieces are distributed around the axis of the center guide sleeve in a circular array mode. After the guide pillar and the guide sleeve are abraded, only the assembled guide sleeve sheet and the replaced pillar body need to be detached and replaced, and the maintenance and replacement cost of the guide pillar and the guide sleeve is reduced.

Description

Technical Field

[0001] The invention relates to the technical field of guide pins and guide sleeves, in particular to a guide pin and guide sleeve used for mold alignment. Background Art

[0002] In the mold industry, various molds and tools are used to obtain the required products by injection molding, blow molding, extrusion, die casting or forging, smelting, stamping and other methods. The mold generally consists of two parts: a movable mold and a fixed mold (or a male mold and a female mold). The two parts can be separated or combined. When separated, the workpiece is taken out. When combined, the blank is injected into the mold cavity for forming. The mold is a precision tool with a complex shape. It bears the expansion force of the blank and has high requirements for structural strength, rigidity, surface hardness, surface roughness and processing accuracy. The movable mold and the fixed mold are installed on the movable mold plate and the fixed mold plate, and move with the movable mold plate and the fixed mold plate. The movable mold plate and the fixed mold plate need to rely on guide pins and guide sleeves for positioning during the movement. Guide pins and guide sleeves are guide elements used in the mold in combination with components to ensure that the mold moves with precise positioning and guides the mold stroke.

[0003] The guide pins and guide sleeves are integral structures and need to be replaced as a whole after being worn. The replacement cost is high, and it is inconvenient to add lubricant between the guide pins and guide sleeves. Therefore, it does not meet the existing needs. In this regard, we propose a guide pin and guide sleeve for mold alignment. Summary of the invention

[0004] The purpose of the present invention is to provide a guide pin and guide sleeve for mold alignment, so as to solve the problems proposed in the above background technology that the guide pin and guide sleeve are both integral structures, need to be replaced as a whole after wear, the replacement cost is high, and it is inconvenient to add lubricant between the guide pin and the guide sleeve.

[0005] To achieve the above-mentioned purpose, the present invention provides the following technical solutions: a guide post and guide sleeve for mold alignment, comprising a guide post and a guide sleeve, wherein the guide sleeve is slidably sleeved on the outside of the guide post, the guide post comprising a central column, and two replacement columns are detachably mounted on the outside of the central column, and the sides of the two replacement columns are both provided with separation guide inclined grooves; The guide sleeve includes a central guide sleeve, and a plurality of groups of assembly guide sleeve pieces that are symmetrical in pairs are provided on the inner side of the central guide sleeve. The assembly guide sleeve pieces are distributed in a circular array around the axis of the central guide sleeve. Limiting rings are installed on the upper and lower sides of the central guide sleeve. The limiting rings and the central guide sleeve clamp the ends of the assembly guide sleeve pieces. A plurality of connecting slots distributed in a circular array are provided on the outer side of the central guide sleeve. A plurality of connecting strips are provided between two of the limiting rings, and both ends of the connecting strips are clamped in the inner sides of the connecting slots.

[0006] Preferably, one end of the assembly guide sleeve is bent outward at 90 degrees, a positioning groove is provided at the secondary end of the assembly guide sleeve, and an annular protrusion is provided on the inner side of the limiting ring.

[0007] Preferably, the annular protrusion is snap-fitted to the inner side of the positioning groove.

[0008] Preferably, a lubricating liquid adding groove is opened on the inner side of the assembly guide sleeve, and two drainage grooves are arranged at the bottom end of the lubricating liquid adding groove, and the bottom end of the drainage groove is flush with the side wall of the assembly guide sleeve.

[0009] Preferably, an inclined guide slope is provided on the inner side of the drainage groove, and the bottom end of the drainage groove is inclined downward at an angle of thirty degrees.

[0010] Preferably, an anti-dropout slot is provided on the inner surface of the center guide sleeve, an anti-dropout clamping block is fixed on the surface of the assembly guide sleeve piece that is in contact with the center guide sleeve, and the anti-dropout clamping block is clamped in the anti-dropout slot.

[0011] Preferably, the outer surface of the central column is provided with two symmetrical plug-in slots, and an elastic plug-in block is fixed on the surface of the replacement column that is in contact with the central column, and the elastic plug-in block is plugged into the inner side of the plug-in slot.

[0012] Preferably, the elastic plug-in block is an elastic metal plate, and two sides of the elastic plug-in block are V-shaped protrusions outward.

[0013] Compared with the prior art, the present invention has the following beneficial effects: 1. In the present invention, when the guide column and the guide sleeve are excessively worn during long-term use, it is only necessary to disassemble the guide column and the guide sleeve, and then disassemble the replacement column on the outer side of the central column that is excessively worn, or remove the connecting strip from between the two limiting rings, and remove the limiting ring from the end of the central guide sleeve, and then take out the assembly guide sleeve piece from the inner side of the central guide sleeve and install a new assembly guide sleeve piece, without having to replace the entire guide column and the guide sleeve, thereby reducing the maintenance and replacement costs of the guide column and the guide sleeve; 2. The present invention adds lubricant through the lubricating liquid adding groove, and uses the drainage groove to divert the lubricant, and diverts the diverted lubricant to the outer surface of the replacement column through the guide slope on the inner side of the drainage groove, thereby lubricating the outer surface of the replacement column in all directions, which is convenient for adding lubricant. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 It is a schematic diagram of the overall structure of the present invention; Figure 2 It is a structural schematic diagram of the guide sleeve of the present invention; Figure 3 This is a schematic diagram of the structure of assembling the guide sleeve of the present invention; Figure 4It is a structural schematic diagram of the limiting ring of the present invention; Figure 5 It is a cross-sectional view of the center guide sleeve of the present invention; Figure 6 It is a structural schematic diagram of the guide column of the present invention; Figure 7 It is a cross-sectional view of the central column of the present invention.

[0015] In the figure: 1. guide column; 11. center column; 12. plug-in slot; 13. replacement column; 14. elastic plug-in block; 15. separation guide inclined slot; 2. guide sleeve; 21. center guide sleeve; 22. limit ring; 23. connecting strip; 24. assembly guide sleeve piece; 25. positioning slot; 26. lubricating liquid addition slot; 27. drainage slot; 28. guide slope; 29. ​​connecting slot; 210. anti-dropping clamping block; 211. anti-dropping slot. DETAILED DESCRIPTION

[0016] The technical solutions in the embodiments of the present invention will be described clearly and completely below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than all the embodiments.

[0017] like Figure 1 , Figure 6 and Figure 7 As shown, a guide column and guide sleeve for mold alignment, the guide column 1 includes a central column 11, and two replacement columns 13 are detachably installed on the outer side of the central column 11, and the sides of the two replacement columns 13 are provided with separation guide inclined grooves 15.

[0018] Two symmetrical plug-in grooves 12 are provided on the outer surface of the central column 11. An elastic plug-in block 14 is fixed to the surface of the replacement column 13 that fits the central column 11. The elastic plug-in block 14 is plugged into the inner side of the plug-in groove 12. The elastic plug-in block 14 is an elastic metal plate. Both sides of the elastic plug-in block 14 protrude outward in a V shape. The elastic plug-in block 14 is utilized to increase the connection strength between the replacement column 13 and the central column 11, thereby ensuring that the replacement column 13 can be replaced without human intervention, and the replacement column 13 cannot be separated or dropped from the outer side of the central column 11.

[0019] like Figures 1 to 5As shown, the guide sleeve 2 is slidably sleeved on the outside of the guide column 1, and the guide sleeve 2 includes a central guide sleeve 21. The inner side of the central guide sleeve 21 is provided with multiple groups of assembly guide sleeve pieces 24 that are symmetrical in pairs. The assembly guide sleeve pieces 24 are distributed in a circular array around the axis of the central guide sleeve 21. Limiting rings 22 are installed on the upper and lower sides of the central guide sleeve 21. The limiting rings 22 and the central guide sleeve 21 clamp the ends of the assembly guide sleeve pieces 24. The outer side of the central guide sleeve 21 is provided with multiple connecting grooves 29 distributed in a circular array. Multiple connecting strips 23 are provided between the two limiting rings 22. Both ends of the connecting strips 23 are clamped in the inner side of the connecting grooves 29. The limiting rings 22 are used to fix the assembly guide sleeve pieces 24 installed on the inner side of the central guide sleeve 21, and the two limiting rings 22 are connected by the connecting strips 23, and it is ensured that the two limiting rings 22 cannot be separated from the central guide sleeve 21 without external force intervention.

[0020] One end of the assembly guide sleeve 24 is bent outward at ninety degrees, and a positioning groove 25 is provided at the second end of the assembly guide sleeve 24. An annular protrusion is provided on the inner side of the limiting ring 22, and the annular protrusion is clamped on the inner side of the positioning groove 25. After the limiting ring 22 presses the end of the assembly guide sleeve 24, it is ensured that the assembly guide sleeve 24 cannot slide between the limiting ring 22 and the center guide sleeve 21, thereby ensuring the stability of the entire guide sleeve 2 structure.

[0021] An anti-dropout slot 211 is provided on the inner surface of the center guide sleeve 21, and an anti-dropout clamping block 210 is fixed to the surface of the assembly guide sleeve piece 24 that fits against the center guide sleeve 21. The anti-dropout clamping block 210 is clamped in the anti-dropout slot 211. The anti-dropout clamping block 210 is utilized to reinforce the connection strength between the assembly guide sleeve piece 24 and the center guide sleeve 21 to prevent the assembly guide sleeve piece 24 from shaking.

[0022] The preferred solution of this embodiment is as follows Figure 3 As shown, a lubricant adding groove 26 is opened on the inner side of the assembly guide sleeve 24, and two drainage grooves 27 are arranged at the bottom end of the lubricant adding groove 26. The bottom end of the drainage groove 27 is flush with the side wall of the assembly guide sleeve 24, and an inclined guide slope 28 is arranged on the inner side of the drainage groove 27. The bottom end of the drainage groove 27 is inclined downward at an angle of thirty degrees. Lubricant is added through the lubricant adding groove 26, and the drainage groove 27 is used to divert the lubricant, and the diverted lubricant is drained to the outer surface of the replacement column 13 through the guide slope 28 on the inner side of the drainage groove 27, so as to lubricate the outer surface of the replacement column 13 in all directions.

[0023] Working principle: when the guide post 1 and the guide sleeve 2 are excessively worn after long-term operation, the guide post 1 and the guide sleeve 2 are separated. If the guide post 1 is excessively worn and needs to be replaced, a tool is inserted into the separation guide bevel 15 on the side of the replacement column 13 and knocked to separate the sides of the two replacement columns 13 from each other, and the elastic plug-in block 14 is separated from the plug-in slot 12. During separation, the elastic plug-in block 14 is compressed and deformed toward the middle, and the replacement column 13 is removed from the outside of the center column 11, and then the new center column 11 is replaced. If the assembly guide sleeve piece 24 is excessively worn and needs to be replaced, a tool is inserted between the connecting strip 23 and the center guide sleeve 21, and the connecting strip 23 is pried toward the outside of the center guide sleeve 21 so that the end of the connecting strip 23 is released from the connecting card on the outer surface of the limit ring 22. The guide sleeve 21 is disengaged from the groove 29. After all the connecting strips 23 are disassembled, the limit ring 22 is removed from the end of the center guide sleeve 21. The assembly guide sleeve piece 24 is then slid along the axial direction of the center guide sleeve 21, and the assembly guide sleeve piece 24 is slid toward the outside of the end of the center guide sleeve 21, so that the assembly guide sleeve piece 24 drives the anti-dropping clamping block 210 to slide in the anti-dropping clamping groove 211. At this time, the anti-dropping clamping block 210 is misaligned with the anti-dropping clamping groove 211. At this time, the assembly guide sleeve piece 24 cannot slide. It only needs to be pushed toward the middle of the center guide sleeve 21 to remove the anti-dropping clamping block 210 from the anti-dropping clamping groove 211. At this time, it is only necessary to install a new assembly guide sleeve piece 24, and then use the limit ring 22 and the connecting strip 23 to fix the assembly guide sleeve piece 24, thereby reducing the maintenance and replacement cost of the guide column 1 and the guide sleeve 2.

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

Claims

1. A guide pin and guide sleeve for mold alignment, comprising a guide pin (1) and a guide sleeve (2), wherein the guide sleeve (2) is slidably sleeved on the outside of the guide pin (1), and characterized in that: The guide column (1) comprises a central column (11), two replacement columns (13) are detachably mounted on the outer side of the central column (11), and the sides of the two replacement columns (13) are both provided with separation guide inclined grooves (15); The guide sleeve (2) comprises a central guide sleeve (21), the inner side of which is provided with a plurality of groups of symmetrical assembly guide sleeve pieces (24), the assembly guide sleeve pieces (24) being arranged in a circular array around the axis of the central guide sleeve (21), the upper and lower sides of the central guide sleeve (21) being provided with limit rings (22), the limit rings (22) and the central guide sleeve (21) clamping the ends of the assembly guide sleeve pieces (24), the outer side of the central guide sleeve (21) being provided with a plurality of connection slots (29) arranged in a circular array, a plurality of connection strips (23) being arranged between two of the limit rings (22), the two ends of the connection strips (23) being clamped in the inner sides of the connection slots (29).

2. The guide pin and guide sleeve for mold alignment according to claim 1, characterized in that: One end of the assembly guide sleeve (24) is bent outward at 90 degrees, a positioning groove (25) is provided at the secondary end of the assembly guide sleeve (24), and an annular protrusion is provided on the inner side of the limiting ring (22).

3. The guide pin and guide sleeve for mold alignment according to claim 2, characterized in that: The annular protrusion is clamped on the inner side of the positioning groove (25).

4. The guide pin and guide sleeve for mold alignment according to claim 1, characterized in that: A lubricating liquid adding groove (26) is provided on the inner side of the assembly guide sleeve (24), two drainage grooves (27) are provided at the bottom end of the lubricating liquid adding groove (26), and the bottom ends of the drainage grooves (27) are flush with the side wall of the assembly guide sleeve (24).

5. The guide pin and guide sleeve for mold alignment according to claim 4, characterized in that: An inclined flow guiding slope (28) is provided on the inner side of the drainage groove (27), and the bottom end of the drainage groove (27) is inclined downward at an angle of thirty degrees.

6. The guide pin and guide sleeve for mold alignment according to claim 1, characterized in that: The inner surface of the central guide sleeve (21) is provided with an anti-dropout slot (211), and the surface of the assembly guide sleeve piece (24) that fits the central guide sleeve (21) is fixed with an anti-dropout snap-in block (210), and the anti-dropout snap-in block (210) is snap-fitted inside the anti-dropout slot (211).

7. The guide pin and guide sleeve for mold alignment according to claim 1, characterized in that: The outer surface of the central column (11) is provided with two symmetrical insertion grooves (12); the replacement column (13) is fitted with an elastic insertion block (14) fixed to the surface of the central column (11); and the elastic insertion block (14) is inserted into the inner side of the insertion groove (12).

8. The guide pin and guide sleeve for mold alignment according to claim 7, characterized in that: The elastic plug-in block (14) is an elastic metal plate, and two sides of the elastic plug-in block (14) are convex outward in a V shape.

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