Anti-rotation structure of a column of an injection molding machine

Abstract

This utility model relates to the field of tie rod technology, specifically an anti-rotation structure for an injection molding machine tie rod, including an anti-rotation limiting seat. The anti-rotation limiting seat is sleeved on the bottom end of the injection molding machine tie rod. Multiple slots are formed on the surface of the injection molding machine tie rod, and a reserved groove is formed on the top surface of the anti-rotation limiting seat. Multiple inserts are inserted into the surface of the reserved groove, and a threaded ring is sleeved inside the reserved groove. The threaded ring pushes the inserts into the slots. The beneficial effect is that by setting inserts on the anti-rotation limiting seat and forming corresponding slots on the surface of the injection molding machine tie rod, the threaded ring is rotated downwards, causing it to push the inserts along the inclined surface of the inserts, allowing the inserts to be inserted into the slots. A reliable anti-rotation structure is formed between the anti-rotation limiting seat and the injection molding machine tie rod.

Description

Technical Field

[0001] This utility model relates to the field of tie rods, specifically an anti-rotation structure for tie rods in injection molding machines. Background Technology

[0002] During the operation of an injection molding machine, the gate column is one of the key components. It bears enormous pressure and dynamic loads, and its stability directly affects the overall performance of the injection molding machine and the quality of the molded products. However, in actual use, the gate column of an injection molding machine often experiences rotation problems.

[0003] During operation, the mold opening and closing motions and the injection pressure of the molten plastic exert forces on the tie columns. Long-term alternating stress can cause the connection between the tie columns and the worktable to loosen, leading to tie column rotation. Furthermore, existing tie column-worktable connections mostly rely on welding or simple bolt fixing. Under complex working conditions and long-term use, these methods are prone to weld breakage or bolt loosening, significantly reducing the tie column's stability and failing to effectively prevent rotation. Tie column rotation has a series of serious consequences. First, it causes unstable mold movement, affecting the dimensional accuracy and surface quality of the molded products, increasing the scrap rate. Second, the additional stress generated by rotation accelerates the wear and damage of the tie columns and related components, shortening the equipment's lifespan and increasing maintenance costs. In addition, severe tie column rotation can even cause safety accidents, threatening the personal safety of operators.

[0004] Therefore, developing a structure that can effectively prevent the rotation of the gate column in an injection molding machine is of great practical significance. Utility Model Content

[0005] The purpose of this invention is to provide an anti-rotation structure for the gatepost of an injection molding machine, so as to solve the problems mentioned in the background art.

[0006] To achieve the above objectives, this utility model provides the following technical solution: an anti-rotation structure for an injection molding machine connector, comprising an anti-rotation limiting seat, the anti-rotation limiting seat being sleeved on the bottom end of the injection molding machine connector, the surface of the injection molding machine connector having multiple slots, the top surface of the anti-rotation limiting seat having a reserved groove, the surface of the reserved groove having multiple inserts, and the inside of the reserved groove having a threaded sleeve ring, the threaded sleeve ring pushing the inserts into the slots.

[0007] Preferably, the bottom end of the anti-rotation limiting seat is integrally formed with a fixing plate, and the surface of the fixing plate is provided with multiple bolt holes.

[0008] Preferably, the reserved groove is an annular groove, and the surface of the reserved groove has multiple through holes, with each through hole corresponding to a slot. The insert block is movably inserted into the through hole, and one end of the insert block has a bevel on its top surface.

[0009] Preferably, one end of the opening has a side groove, the height of which is greater than the height of the opening, and a rubber band is fixed between the top and bottom surfaces of the side groove, and the other end of the insert block is fixed to the surface of the rubber band.

[0010] Preferably, the surface of the reserved groove is provided with an external thread, which is located above the through hole, and the external thread is screwed to the threaded sleeve.

[0011] Preferably, the outer wall of the threaded sleeve is fixed with a plurality of paddles, and the bottom surface of the threaded sleeve is fixed with a rubber pad.

[0012] Compared with the prior art, the beneficial effects of this utility model are: This invention proposes an anti-rotation structure for the gatepost of an injection molding machine. By setting an insert block on the anti-rotation limiting seat and creating a corresponding slot on the surface of the gatepost, the screw threaded collar is screwed down, pushing the insert block along its inclined surface until it inserts into the slot. This forms a reliable anti-rotation structure between the anti-rotation limiting seat and the gatepost. This structure directly restricts the rotational freedom of the gatepost, fundamentally preventing rotation during injection molding, ensuring smooth template movement and consistent product quality, and reducing the scrap rate.

[0013] When installing the anti-rotation limit seat, the fixing plate is firmly fixed to the injection molding machine table with bolts. Simultaneously, the anti-rotation structure of the insert block and slot further enhances the connection strength between the tie column and the table. Even during long-term operation of the injection molding machine, facing complex working conditions and various forces, it effectively prevents the connection between the tie column and the table from loosening, improving the overall structural stability and reliability, and extending the service life of the equipment. Attached Figure Description Figure 1 This is a schematic diagram of the structure of this utility model; Figure 2 This is a top view of the structure of this utility model; Figure 3 for Figure 2 Sectional view of the structure at point AA; Figure 4 for Figure 3 Enlarged schematic diagram of the structure at point A in the middle; Figure 5 This is a schematic diagram of the anti-rotation limiting seat and the threaded sleeve connection structure of this utility model; Figure 6 This is a schematic diagram of the anti-rotation limiting seat structure of this utility model.

[0014] In the diagram: 1. Anti-rotation limit seat; 2. Fixing plate; 3. Bolt hole; 4. Reserved groove; 5. Through hole; 6. Side groove; 7. Rubber band; 8. Insert block; 9. Slot; 10. Threaded ferrule; 11. Paddle; 12. Rubber pad; 13. Injection molding machine guide column. Detailed Implementation

[0015] To make the objectives, technical solutions, and advantages of this utility model clear and complete, the embodiments of this utility model will be further described in detail below with reference to the accompanying drawings. It should be understood that the specific embodiments described herein are only some, not all, embodiments of this utility model, and are merely used to explain the embodiments of this utility model. They are not intended to limit the embodiments of this utility model. All other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this utility model.

[0016] Please see Figures 1-6 This utility model provides a technical solution: an anti-rotation structure for an injection molding machine connector, including an anti-rotation limiting seat 1, a fixing plate 2 integrally formed at the bottom end of the anti-rotation limiting seat 1, and multiple bolt holes 3 on the surface of the fixing plate 2; the anti-rotation limiting seat 1 is sleeved on the bottom end of the injection molding machine connector 13, and multiple slots 9 are provided on the surface of the injection molding machine connector 13; after fixing the injection molding machine connector 13 to the table of the injection molding machine, the anti-rotation limiting seat 1 is sleeved from the top of the injection molding machine connector 13 until the fixing plate 2 at the bottom of the anti-rotation limiting seat 1 overlaps the table of the injection molding machine, and bolts are used to pass through the bolt holes 3 and the holes on the table to fix the fixing plate 2 to the table of the injection molding machine, and the anti-rotation limiting seat 1 plays a role in preventing the bottom end of the injection molding machine connector 13 from bending and limiting.

[0017] The top surface of the anti-rotation limiting seat 1 is provided with a reserved groove 4, and multiple inserts 8 are inserted into the surface of the reserved groove 4. A threaded collar 10 is sleeved inside the reserved groove 4, and the threaded collar 10 pushes the inserts 8 into the slots 9. The reserved groove 4 is an annular groove, and multiple through holes 5 are provided on the surface of the reserved groove 4. The through holes 5 correspond one-to-one with the slots 9. The inserts 8 are movably inserted into the through holes 5. One end of the inserts 8 has a bevel on the top surface. One end of the through hole 5 has a side groove 6, and the height of the side groove 6 is greater than the height of the through hole 5. A rubber band 7 is fixed between the top surface and the bottom surface of the side groove 6. The other end of the inserts 8 is fixed to the surface of the rubber band 7. The surface of the reserved groove 4 is provided with an external thread, which is located above the through hole 5. The external thread is screwed to the threaded collar 10. Multiple paddles 11 are fixed to the outer wall of the threaded collar 10, and a rubber pad 12 is fixed to the bottom surface of the threaded collar 10.

[0018] In use, after the anti-rotation limiting seat 1 is placed on the injection molding machine table, the anti-rotation limiting seat 1 is rotated around the injection molding machine connector 13 as the central axis until the through-hole 5 and the slot 9 correspond. At this time, the fixing plate 2 is fixed to the table with bolts. The threaded sleeve 10 is placed on the top of the anti-rotation limiting seat 1 and the threaded sleeve 10 is screwed downward. The threaded sleeve 10 pushes the insert block 8 along the inclined surface. The insert block 8 stretches the rubber band 7 to produce elastic deformation, and the insert block 8 pushes the rubber band 7 into the slot 9. The other end of the insert block 8 also extends into the slot 9. An anti-rotation structure is formed between the anti-rotation limiting seat 1 and the injection molding machine connector 13 to prevent the injection molding machine connector 13 from rotating. It also strengthens the connection between the injection molding machine connector 13 and the table. Even if the weld between the injection molding machine connector 13 and the table breaks, the injection molding machine connector 13 will not fall off the table due to the limiting effect of the insert block 8 and the anti-rotation limiting seat 1.

[0019] How to use the anti-rotation structure of the injection molding machine's gatepost: Insert the anti-rotation limiting seat 1 onto the top of the injection molding machine's gatepost 13, and slowly lower it until the fixing plate 2 at the bottom of the anti-rotation limiting seat 1 overlaps the injection molding machine's table. Move the anti-rotation limiting seat 1 around the injection molding machine's gatepost 13 as its central axis, carefully observing and adjusting until the through-hole 5 on the pre-reserved groove 4 on the top surface of the anti-rotation limiting seat 1 corresponds one-to-one with the slot 9 on the surface of the injection molding machine's gatepost 13. Using bolts of appropriate specifications, pass them sequentially through the bolt holes 3 on the surface of the fixing plate 2 and the corresponding holes on the injection molding machine's table, and tighten the bolts with a tool to firmly fix the fixing plate 2 to the injection molding machine's table. At this point, the anti-rotation limiting seat 1 provides initial anti-bend limiting for the bottom end of the injection molding machine's gatepost 13. Place the threaded collar 10 on top of the anti-rotation limiting seat 1, ensuring that the inner wall of the threaded collar 10 is in correct contact with the external thread on the surface of the pre-reserved groove 4 on the top surface of the anti-rotation limiting seat 1. Use your fingers or a tool to hold the lever 11 fixed to the outer wall of the threaded collar 10 and screw the threaded collar 10 downwards in a clockwise direction. As the threaded collar 10 is screwed down, it will push the insert block 8 along the inclined surface at one end of the insert block 8. Under the pushing action of the threaded collar 10, the insert block 8 moves in the through hole 5 on the surface of the pre-reserved groove 4, while simultaneously tensioning the rubber band 7 fixed between the top and bottom surfaces of the side groove 6, causing the rubber band 7 to undergo elastic deformation. Under the combined action of the inclined plane pushing and the elastic deformation of the rubber band 7, the other end of the insert 8 gradually pushes the rubber band 7 and inserts into the slot 9 on the surface of the injection molding machine gatepost 13. The end of the insert 8 located inside the through-hole 5 also extends into the slot 9, forming a reliable anti-rotation structure between the anti-rotation limiting seat 1 and the injection molding machine gatepost 13. Continue to screw the threaded collar 10 until it can no longer move downwards. At this point, the rubber pad 12 fixed to the bottom surface of the threaded collar 10 is tightly fitted with the top surface of the anti-rotation limiting seat 1, providing a certain degree of buffering and sealing.

[0020] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. An anti-rotation structure for an injection molding machine connector, comprising an anti-rotation limiting seat (1), the anti-rotation limiting seat (1) being sleeved on the bottom end of the injection molding machine connector (13), and the surface of the injection molding machine connector (13) having multiple slots (9), characterized in that: The top surface of the anti-rotation limiting seat (1) is provided with a reserved groove (4), and multiple inserts (8) are inserted into the surface of the reserved groove (4). A threaded ring (10) is sleeved inside the reserved groove (4), and the threaded ring (10) pushes the inserts (8) into the slot (9).

2. The anti-rotation structure of the gatepost of an injection molding machine according to claim 1, characterized in that: The bottom end of the anti-rotation limiting seat (1) is integrally formed with a fixing plate (2), and the surface of the fixing plate (2) is provided with multiple bolt holes (3).

3. The anti-rotation structure of the gatepost of an injection molding machine according to claim 1, characterized in that: The reserved slot (4) is an annular slot. Multiple through holes (5) are provided on the surface of the reserved slot (4). The through holes (5) and slots (9) correspond one to one. The plug (8) is movably inserted into the through hole (5). One end of the plug (8) has a bevel on the top surface.

4. The anti-rotation structure of the gatepost of an injection molding machine according to claim 3, characterized in that: One end of the opening (5) is provided with a side groove (6), the height of the side groove (6) is greater than the height of the opening (5), and a rubber band (7) is fixed between the top surface of the side groove (6) and the bottom surface of the side groove (6), and the other end of the insert (8) is fixed to the surface of the rubber band (7).

5. The anti-rotation structure of the gatepost of an injection molding machine according to claim 3, characterized in that: The surface of the reserved groove (4) is provided with an external thread, which is located above the through hole (5). The external thread and the threaded ring (10) are screwed together.

6. The anti-rotation structure of the gatepost of an injection molding machine according to claim 5, characterized in that: Multiple paddles (11) are fixed to the outer wall of the sleeving ring (10), and a rubber pad (12) is fixed to the bottom surface of the sleeving ring (10).

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