Easy-to-disassemble reverse top locking structure

Abstract

The utility model relates to an easy-to-disassemble reverse top locking structure, including flange plate, flange nut and reverse top bolt, wherein the flange nut front and rear both ends are through, and the inner passage of flange nut includes first cavity and second cavity from front to back in proper order, wherein the inner wall of first cavity stretches to the plurality of clamping stations of axle core, and is equipped with the mounting groove between two adjacent clamping stations, the radius of second cavity is greater than or equal to the distance of the groove wall of mounting groove to axle core, the flange plate includes mounting end and clamping end, the clamping end is equipped with the plurality of protrusions along its axial direction, and the adjacent two protrusions are the clamping groove, the shape and size of clamping groove and clamping station are matched, the shape and size of protrusion and mounting groove are matched, the axial length of clamping end is same with the axial length of second cavity, the through screw hole is equipped on the clamping station, and the reverse top bolt is installed in the screw hole, the reverse top locking structure of the utility model is simple structure, and is convenient to operate.

Description

Technical Field

[0001] This utility model relates to the field of injection molding technology, specifically to an easy-to-disassemble reverse-top locking structure. Background Technology

[0002] A flange is a component used to connect shafts, and it is widely used in chemical, pharmaceutical, and other fields. Flanges are also a crucial component in injection molding machines, used to connect the nozzle and the feed tube, or to connect the rear end of the feed tube to the machine body. Existing flanges consist of a flange plate and several bolts and nuts. During installation, the flange plate is aligned, the bolts are passed through the holes in the flange plate, and then the nuts are tightened. Due to the large number of bolts, each installation and disassembly requires a significant amount of time.

[0003] Therefore, there is an urgent need in this field for a locking structure that is easier to install. Summary of the Invention

[0004] The purpose of this invention is to overcome the defects of the existing technology and provide a reverse locking structure.

[0005] To achieve the purpose of this utility model, this application provides the following technical solution.

[0006] In a first aspect, this application provides an easy-to-disassemble reverse-locking structure, the reverse-locking structure including a flange, a flange nut, and a reverse-locking bolt, wherein the flange nut is through at both ends, and the inner channel of the flange nut includes a first cavity, a second cavity, and a third cavity from front to back, wherein the inner wall of the first cavity extends towards the axis with multiple locking platforms, and an installation groove is provided between two adjacent locking platforms, and the radius of the second cavity is greater than or equal to the distance from the groove wall of the installation groove to the axis; the flange includes a locking end, the locking end having multiple protrusions along its axial direction, and a locking groove between two adjacent protrusions, the locking groove matching the shape and size of the locking platform, the protrusions matching the shape and size of the installation groove, and the axial length of the locking end being the same as the axial length of the second cavity; the locking platform has a through screw hole, and the reverse-locking bolt is installed in the screw hole. Compared to existing flanges, the easy-to-remove reverse-locking structure of this application only requires inserting the flange into the flange nut, allowing the snap-fit ​​end to enter the second cavity. Then, rotating it a certain angle causes the protrusion to align below the snap-fit ​​platform. Finally, tightening the reverse-locking bolt downwards blocks the front end of the protrusion, preventing the flange from rotating and ensuring stable installation of the entire structure – a very quick process. For disassembly, simply rotate the reverse-locking bolt slightly to separate it from the protrusion, allowing the flange to rotate. Once the protrusion aligns with the mounting groove, the flange can be pulled out of the flange nut, completing disassembly. Installation and disassembly are significantly faster than with existing flanges.

[0007] In one embodiment of the first aspect, a third cavity is further provided at the rear end axis of the flange nut. The inner diameter of the third cavity is smaller than that of the second cavity, and the inner wall of the third cavity is threaded. The smaller inner diameter of the third cavity compared to the second cavity allows the flange to be supported by the step formed between the second and third cavities, thus fixing it axially.

[0008] In one embodiment of the first aspect, the front end of the protrusion is provided with a positioning groove, the size of which matches the outer diameter of the anti-rotating bolt. The positioning groove serves two purposes: firstly, it provides positioning to determine the angle of flange rotation; secondly, it allows the anti-rotating bolt to be partially inserted into the front surface of the protrusion, preventing flange rotation. The depth of the positioning groove does not need to be large, approximately 1 mm is sufficient.

[0009] In one embodiment of the first aspect, the number of the card slots is 2 to 50.

[0010] In one embodiment of the first aspect, the radius of the mounting end is less than or equal to the distance from the inner edge of the snap-fit ​​station to the axis.

[0011] In one embodiment of the first aspect, the flange has a mounting end at its front end, and the flange extends through the front and rear, with internal threads on the inner wall of the mounting end.

[0012] Compared with the prior art, the beneficial effects of this utility model are as follows: The anti-top locking structure of this application only requires slightly turning the anti-top bolt to insert into or release it from the positioning groove during disassembly and assembly, which can achieve the fixing and loosening of the flange and the flange nut. The structure is simple and the operation is convenient and quick. Attached Figure Description

[0013] Figure 1 This is a cross-sectional structural diagram of the flange nut in this application.

[0014] Figure 2 for Figure 1 A schematic diagram of the cross section of AA.

[0015] Figure 3 This is a cross-sectional structural diagram of the flange in this application.

[0016] Figure 4 for Figure 3 A schematic diagram of the cross-section of BB.

[0017] Figure 5 This is a schematic diagram of the overall structure when the anti-top locking structure is applied to the front end of the screw in Example 1.

[0018] Figure 6 for Figure 5 A magnified view of a portion of region C.

[0019] Figure 7 This is a schematic diagram of the overall structure when the anti-top locking structure is applied to the rear end of the material tube in Example 2.

[0020] Figure 8 for Figure 7 A magnified view of a portion of region D.

[0021] Figure 9 This is a schematic diagram of the end face of the flange in Example 2.

[0022] Figure 10 This is a schematic cross-sectional view of the flange nut in Example 2.

[0023] Figure 11 This is a schematic diagram of the end face structure of the flange nut in Example 2.

[0024] In the attached diagram, 1 is a flange nut, 11 is the first cavity, 12 is the second cavity, 13 is the third cavity, 14 is a screw hole, 15 is a snap-fit ​​platform, 16 is a mounting groove, 17 is a mounting screw hole, 2 is a flange, 21 is a snap-fit ​​end, 22 is a mounting end, 23 is a positioning groove, 24 is an internal thread, 25 is a protrusion, 26 is a snap-fit ​​groove, 3 is a feed tube, 4 is a screw, 5 is a screw head, 6 is a stop ring, 7 is a spacer, 8 is a nozzle, 9 is a back bolt, and 10 is a fixing bolt. Detailed Implementation

[0025] Unless otherwise defined, the technical or scientific terms used in this specification and claims shall have the ordinary meaning understood by one of ordinary skill in the art to which this invention pertains. All values ​​listed herein, ranging from the minimum to the maximum, refer to all values ​​obtained by incrementing the minimum and maximum values ​​by one unit when the difference between the minimum and maximum values ​​is more than two units.

[0026] The following describes specific embodiments of this utility model. It should be noted that, in order to provide a concise description, this specification cannot provide a detailed description of all features of the actual embodiments. Without departing from the spirit and scope of this utility model, those skilled in the art can modify and substitute the embodiments of this utility model, and the resulting embodiments are also within the protection scope of this utility model. Example

[0027] The embodiments of this utility model will be described in detail below. These embodiments are implemented based on the technical solution of this utility model and provide detailed implementation methods and specific operation processes. However, the protection scope of this utility model is not limited to the following embodiments. Example 1

[0028] A screw assembly, the structure of which is as follows: Figure 5 , Figure 6 As shown, the assembly includes a feed tube 3, a screw 4, a screw head assembly, an injection nozzle 8, and a reverse locking structure. The screw head assembly further includes a screw head 5, a check ring 6, and a bushing 7. The structures of the feed tube 3, screw 4, screw head 5, check ring 6, bushing 7, and injection nozzle 8 are similar to those in the prior art and will not be described in detail in this embodiment. The difference between this application and existing screw assemblies lies in the use of a reverse locking structure. The reverse locking structure consists of three parts: a flange nut 1, a flange 2, and a reverse bolt (the reverse bolt is not shown in the figure, but...). Figure 6 The location of the center screw hole is where the top bolt is installed.

[0029] The structure of flange nut 1 is as follows Figure 1 , Figure 2 As shown, the flange nut 1 has a through-hole at its axial center, and the channel includes a first cavity 11, a second cavity 12, and a third cavity 13 from front to back. The inner diameter of the third cavity 13 is smaller than that of the second cavity 12, and the inner wall of the third cavity 13 has internal threads. During installation, the third cavity 13 is fixed to the front end of the material tube 3 by these threads. The inner wall of the first cavity 11 has eight uniformly sized locking platforms 15 extending towards the axial center. Each locking platform 15 is fan-shaped, and there is a mounting groove 16 between adjacent locking platforms 15. Each locking platform 15 has a through-hole 14 for installing a countersunk bolt. When not in use, the countersunk bolt is always installed in the bolt hole 14, with the tail of the countersunk bolt flush with or slightly forward of the tail of the bolt hole 14. The second cavity 12 is a cylindrical cavity.

[0030] The structure of flange 2 is as follows Figure 3 , Figure 4 As shown, the flange 2 is T-shaped, with a mounting end 22 at the front and a snap-fit ​​end 21 at the rear. The flange 2 is also a through-type structure, and an internal thread 24 is provided on the inner wall of the front end of this channel (corresponding to the inside of the mounting end 22). The nozzle 8 is fixed to the front end of the flange 2 via this thread. The outer wall of the snap-fit ​​end 21 has eight identical protrusions 25 evenly distributed, with eight slots 26 between adjacent protrusions 25. A positioning groove 23 is provided at the front end of each protrusion 25. The outer diameter of the protrusion 25 matches the inner diameter of the second cavity 12, and the axial length of the protrusion 25 matches the axial length of the second cavity 12. In this embodiment, "matching" means being essentially the same, with a difference of 1-2 micrometers.

[0031] During installation, the anti-locking structure is assembled by aligning the protrusion 25 of the flange 2 with the mounting groove 16 of the flange nut 1, and aligning the retaining groove 26 of the flange 2 with the retaining platform 15 of the flange nut 1. This ensures unimpeded axial movement of the flange 2 and flange nut 1, allowing the retaining end 21 to be pushed into the second cavity 12. Since the outer diameter of the protrusion 25 matches the inner diameter of the second cavity 12, and the axial length of the protrusion 25 matches the axial length of the second cavity 12, the flange 2 can be rotated so that the protrusion 25 of the flange 2 rotates below the retaining platform 15 of the flange nut 1, aligning the screw hole 14 with the positioning groove 23. Then, the anti-locking bolt is rotated so that its rear end extends out of the screw hole 14 and inserts into the positioning groove 23 until it abuts against the bottom of the positioning groove 23. Thus, the anti-locking bolt restricts the rotation of the flange 2, while the second cavity 12 restricts the axial and radial displacement of the retaining end 21, completing the fixation of the flange 2 and flange nut 1.

[0032] Similarly, when it is necessary to disassemble the anti-top locking structure, simply rotate the anti-top bolt in the opposite direction to disengage it from the positioning groove 23. At this time, the flange 2 can be rotated so that the protrusion 25 of the flange 2 is re-aligned with the mounting groove 16 of the flange nut 1, and the slot 26 of the flange 2 is re-aligned with the locking platform 15 of the flange nut 1. Then the flange 2 can be pulled out from the flange nut 1. Example 2

[0033] In this embodiment, in addition to the anti-top locking structure used between the material tube 3 and the nozzle, an anti-top locking structure is also provided in the middle and rear section of the material tube 3 for the installation of the material tube 3 and the main body of the equipment, as detailed below. Figure 7 , Figure 8 As shown.

[0034] The flange 2 is fixed to the outside of the material pipe 3 here, and can be integrated with the material pipe 3 or separately. The flange 2 includes eight identical protrusions 25 evenly arranged, with eight slots 26 between two adjacent protrusions 25. A positioning groove 23 is provided on the front end face of the protrusion 25, such as... Figure 9 As shown.

[0035] The flange nut 1 has a ring of mounting screw holes 17 on its outer side and is installed on the front end of the equipment body (the equipment body is not shown in the figure) by fixing bolts 10. The structure of the flange nut 1 is as follows: Figure 10 , Figure 11As shown, the flange nut 1 has only a first cavity 11 and a second cavity 12 that are connected through each other. Eight uniformly sized locking platforms 15 extend evenly from the inner wall of the first cavity 11 towards the axis. Each locking platform 15 is fan-shaped, and there is a mounting groove 16 between adjacent locking platforms 15. Each locking platform 15 has a through-hole 14 for installing a countersunk bolt 9. When not in use, the countersunk bolt 9 is always installed in the bolt hole 14, with the tail of the countersunk bolt 9 flush with or slightly forward of the tail of the bolt hole 14. The second cavity 12 is a cylindrical cavity.

[0036] The installation principle is the same as in Example 1.

[0037] The above description of the embodiments is intended to enable those skilled in the art to understand and apply this application. It will be apparent to those skilled in the art that various modifications can be easily made to these embodiments, and the general principles described herein can be applied to other embodiments without creative effort. Therefore, this application is not limited to the embodiments described herein, and any improvements and modifications made by those skilled in the art based on the disclosure of this application without departing from the scope and spirit of this application are within the scope of this application.

Claims

1. A detachable reverse-top locking structure, characterized in that, The anti-top locking structure includes a flange, a flange nut, and an anti-top bolt. The flange nut is through at both ends, and its internal channel includes a first cavity and a second cavity from front to back. The inner wall of the first cavity extends towards the axis with multiple locking platforms, and a mounting groove is provided between two adjacent locking platforms. The radius of the second cavity is greater than or equal to the distance from the groove wall to the axis. The flange has a locking end with multiple protrusions along its axial direction, and a locking groove is formed between two adjacent protrusions. The shape and size of the locking groove match the locking platform, and the shape and size of the protrusion match the mounting groove. The axial length of the locking end is the same as the axial length of the second cavity. The locking platform has a through screw hole, and the anti-top bolt is installed in the screw hole.

2. The anti-top locking structure as described in claim 1, characterized in that, The flange nut is further provided with a through third cavity at the rear end shaft center. The inner diameter of the third cavity is smaller than that of the second cavity, and the inner wall of the third cavity is threaded.

3. The anti-top locking structure as described in claim 1, characterized in that, The front end of the protrusion is provided with a positioning groove, the size of which matches the outer diameter of the anti-top bolt.

4. The anti-top locking structure as described in claim 1, characterized in that, The number of card terminals is 2 to 50.

5. The anti-top locking structure as described in claim 1, characterized in that, The radius of the mounting end is less than or equal to the distance from the inner edge of the snap-fit ​​station to the axis.

6. The anti-top locking structure as described in claim 5, characterized in that, The flange has an installation end at its front end, and the flange is continuous from front to back. The inner wall of the installation end is provided with internal threads.

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