CN216914642U - Wear-resistant fixing device - Google Patents
Wear-resistant fixing device Download PDFInfo
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- CN216914642U CN216914642U CN202123153839.3U CN202123153839U CN216914642U CN 216914642 U CN216914642 U CN 216914642U CN 202123153839 U CN202123153839 U CN 202123153839U CN 216914642 U CN216914642 U CN 216914642U
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- wear
- plate
- countersunk
- hole
- screw
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Abstract
The utility model discloses a wear-resistant fixing device which comprises a fixing plate, a wear-resistant plate and a countersunk screw, wherein one end of the countersunk screw penetrates through the wear-resistant plate and is fixed in the fixing plate, the wear-resistant plate is provided with a hole through which one end of the countersunk screw penetrates, the fixing plate is provided with a fixing hole, an internal thread matched with an external thread on the countersunk screw is arranged in the fixing hole, and the fixing hole is a countersunk hole. According to the utility model, the deformation of the wear-resisting plate caused when the wear-resisting plate is fastened by the two screws can be absorbed by the stepped hole, so that the surface of the wear-resisting plate is not deformed, and the protection system is stable; because the step that has the antifriction plate in the fixed orifices on the fixed plate is filled into, can not produce the shearing force to set screw during the system operation, it is safer.
Description
Technical Field
The utility model relates to a wear-resistant fixing device, in particular to a wear-resistant fixing device for an injection molding machine, and belongs to the technical field of injection molding machines.
Background
The wear-resistant holes 5 on the traditional wear-resistant plate 2 are counter bores, and the fixing holes 4 on the fixing plate 3 are also counter bores; as shown in fig. 1 and 2, there are the following disadvantages:
1. when the countersunk head screws 1 are screwed down, the countersunk head screws 1 and the wear-resisting plate 2 are automatically centered due to the design of the inclined openings of the countersunk head holes, and when the two countersunk head screws 1 are fastened, the wear-resisting plate 2 is deformed (the direction b in fig. 2 is the deformation direction), so that the stability of the system is influenced;
2. due to the wear plate 2, other workpieces can slide on the wear plate 2, and the wear plate 2 can shear the countersunk screw 1 (the direction j in fig. 2 is the shearing direction), so that the countersunk screw 1 is easy to break, and the whole system is damaged.
Disclosure of Invention
The technical problem to be solved by the utility model is as follows: how to avoid the deformation of the wear-resisting plate when the countersunk head screw is fastened; and how to avoid the problem that the wear-resisting plate shears the countersunk head screw when the workpiece slides on the wear-resisting plate.
In order to solve the technical problems, the technical scheme of the utility model is to provide a wear-resistant fixing device which comprises a fixing plate, a wear-resistant plate and a countersunk screw, wherein one end of the countersunk screw penetrates through the wear-resistant plate and is fixed in the fixing plate, the wear-resistant plate is provided with a hole through which one end of the countersunk screw penetrates, the fixing plate is provided with a fixing hole, an internal thread matched with an external thread on the countersunk screw is arranged in the fixing hole, and the fixing hole is a countersunk hole.
Preferably, the stepped hole comprises an upper stepped hole and a lower stepped hole, and the upper stepped hole and the lower stepped hole form a step; the aperture size of the upper stepped hole is not smaller than the maximum outer diameter of the countersunk head at the other end of the countersunk head screw, and the aperture size of the lower stepped hole is larger than the maximum outer diameter of one end of the countersunk head screw and smaller than the maximum outer diameter of the countersunk head at the other end of the countersunk head screw.
Preferably, the part of the fixing hole close to the surface of the fixing plate is matched with the conical countersunk head at the other end of the countersunk head screw.
The device provided by the utility model optimally designs the wear-resistant holes on the wear-resistant plate, and changes the existing counter bores into the stepped holes.
According to the utility model, the counter sink is made into the stepped hole through the customized special forming cutter, and the stepped hole is processed in one step except for the thread, so that the accuracy is ensured.
In the assembly process, the countersunk head screw is fastened by adopting rated torque force, so that the step at the bottom of the wear-resisting plate is filled in the fixing hole due to deformation, and meanwhile, the countersunk head screw is fastened by matching with special thread glue.
Compared with the prior art, the utility model has the following advantages:
1. according to the utility model, the deformation of the wear-resisting plate caused when the wear-resisting plate is fastened by the two countersunk head screws can be absorbed by the stepped hole, so that the surface of the wear-resisting plate is not deformed, and the protection system is stable;
2. because the step that has the antifriction plate in the fixed orifices on the fixed plate is filled into, can not produce the shearing force to countersunk screw during the system operation, it is safer.
Drawings
FIG. 1 is a schematic view of an installation of a conventional wear-resistant fastening structure;
FIG. 2 is a schematic diagram of a conventional wear-resistant fastening structure in deformation and shearing;
FIG. 3 is a schematic view of a wear-resistant fixture;
fig. 4 is a schematic diagram of a wear plate construction.
Detailed Description
In order to make the utility model more comprehensible, preferred embodiments are described in detail below with reference to the accompanying drawings.
The utility model provides a wear-resistant fixing device which is applied to an injection molding machine and comprises a fixing plate 3, a wear-resistant plate 2 and a countersunk screw 1, wherein one end of the countersunk screw 1 penetrates through the wear-resistant plate 2 and is fixed in the fixing plate 3, a hole for penetrating one end of the countersunk screw 1 is formed in the wear-resistant plate 2, a fixing hole 4 is formed in the fixing plate 3, an internal thread matched with an external thread on the countersunk screw 1 is formed in the fixing hole 4, the fixing hole 4 is a countersunk hole, and the part, close to the surface of the fixing plate 3, of the fixing hole 4 is matched with a conical countersunk head at the other end of the countersunk screw 1.
As shown in fig. 4, the holes of the wear plate 2 are stepped holes, each stepped hole comprises an upper stepped hole 2-1 and a lower stepped hole 2-2, and the upper stepped hole 2-1 and the lower stepped hole 2-2 form a step 2-3; the aperture size of the upper stepped hole 2-1 is not smaller than the maximum outer diameter of the countersunk head at the other end of the countersunk head screw 1, and the aperture size of the lower stepped hole 2-2 is larger than the maximum outer diameter of one end of the countersunk head screw 1 and smaller than the maximum outer diameter of the countersunk head at the other end of the countersunk head screw 1.
In this embodiment, the diameter of the upper stepped hole 2-1 is matched with the maximum outer diameter of the countersunk head at the other end of the countersunk head screw 1, and the diameter of the lower stepped hole 2-3 is matched with the maximum outer diameter of the countersunk head screw 1.
The using process of the utility model is as follows:
when the anti-abrasion device is used, one end of the countersunk head screw 1 penetrates through the anti-abrasion plate 2, the countersunk head screw 1 is screwed, the countersunk head screw 1 enters the fixing hole 4 of the fixing plate 3, after the countersunk head screw 1 enters the fixing hole 4 for a certain distance, the small head end of the conical countersunk head on the countersunk head screw 1 props against the edge of the step 2-3, the countersunk head screw 1 continues to enter the fixing hole 4, the step 2-3 is continuously pressed through the conical countersunk head on the countersunk head screw 1 to deform the step 2-3 until the countersunk head screw 1 presses the step 2-3 into the fixing hole 4, namely the fixing hole 4 is connected with the countersunk head of the countersunk head screw 1 through the deformed step 2-3.
Claims (3)
1. The utility model provides a wear-resisting fixing device, includes fixed plate (3), antifriction plate (2) and countersunk screw (1), countersunk screw (1) one end passes antifriction plate (2) and fixes in fixed plate (3), is equipped with the hole that supplies countersunk screw (1) one end to pass on antifriction plate (2), is equipped with fixed orifices (4) on fixed plate (3), be equipped with in fixed orifices (4) with countersunk screw (1) go up external screw thread assorted internal thread, fixed orifices (4) are the countersunk hole, its characterized in that, antifriction plate (2) on the hole be the step hole, be equipped with on the step hole and exert pressure through countersunk screw (1) and crowd step (2-3) in fixed orifices (4).
2. A wear-resistant fixture in accordance with claim 1, wherein said stepped bore includes an upper stepped bore (2-1) and a lower stepped bore (2-2), the upper stepped bore (2-1) and the lower stepped bore (2-2) forming a step (2-3); the aperture size of the upper step hole (2-1) is not smaller than the maximum outer diameter of the countersunk head at the other end of the countersunk head screw (1), and the aperture size of the lower step hole (2-2) is larger than the maximum outer diameter of one end of the countersunk head screw (1) and smaller than the maximum outer diameter of the countersunk head at the other end of the countersunk head screw (1).
3. A wear-resistant fastening device as claimed in claim 1, characterized in that the part of the fastening hole (4) near the surface of the fastening plate (3) is adapted to the conical countersunk head at the other end of the countersunk-head screw (1).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202123153839.3U CN216914642U (en) | 2021-12-15 | 2021-12-15 | Wear-resistant fixing device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202123153839.3U CN216914642U (en) | 2021-12-15 | 2021-12-15 | Wear-resistant fixing device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN216914642U true CN216914642U (en) | 2022-07-08 |
Family
ID=82251792
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202123153839.3U Active CN216914642U (en) | 2021-12-15 | 2021-12-15 | Wear-resistant fixing device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN216914642U (en) |
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2021
- 2021-12-15 CN CN202123153839.3U patent/CN216914642U/en active Active
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