Drawbar self-locking fixing structure
By using the mechanical self-locking structure of the hydraulic cylinder assembly and the hydraulic cylinder locking pin, the problem of unstable locking of the hydraulic cylinder is solved, a more stable locking effect is achieved, and the overall stability of the equipment is enhanced.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- NINGBO LK TECHNOLOGY CO LTD
- Filing Date
- 2025-04-30
- Publication Date
- 2026-04-10
AI Technical Summary
In the existing technology, the locking and fixing of the hydraulic cylinder is difficult to achieve stable locking, which leads to problems such as insufficient clamping force, mold wear and equipment vibration.
The system employs a hydraulic cylinder assembly and a locking pin, which unlocks through a limiting structure and achieves stable locking through a mechanical self-locking mechanism. The self-locking mechanism is formed by the friction between the inclined surfaces of the open ring and the locking groove.
This improves the stability of the locking structure, avoids equipment vibration and mold wear, and enhances the overall stability of the equipment.
Smart Images
Figure CN224101810U_ABST
Abstract
Description
TECHNICAL FIELD
[0001] The application relates to the field of die casting machines, in particular to a self-locking fixing structure of an ejector. BACKGROUND
[0002] In the prior art, the locking and fixing of an ejector oil cylinder has always been a difficult problem to solve. Usually, the locking of the ejector oil cylinder is maintained by a hydraulic system to maintain the locking film pressure, and a self-locking effect is formed by high-pressure oil in the oil cylinder. When the hydraulic valve is closed, the oil is enclosed in the oil cylinder, and stable locking is achieved through pressure balance. If the ejector oil cylinder is not locked and fixed, it may cause problems such as insufficient mold locking force of the overall equipment, abnormal wear of the mold, equipment vibration and decline in equipment stability.
[0003] Therefore, it is necessary to improve the existing locking structure of the ejector oil cylinder. CONTENT OF THE UTILITY MODEL
[0004] The application aims to provide a locking structure of an ejector oil cylinder which can solve at least one defect in the background art.
[0005] To achieve the at least one purpose described above, the application adopts the technical scheme of a self-locking fixing structure of an ejector, which comprises a girder column, an ejector oil cylinder assembly and an ejector locking pin. The girder column is slidingly installed on an external mold plate. The ejector oil cylinder assembly is cooperatively installed on the external mold plate. The ejector locking pin is inserted into the external mold plate. The girder column is adapted to be cooperatively connected with the ejector oil cylinder assembly through a limiting structure and locked. When the girder column needs to be separated from the external mold plate, the ejector oil cylinder assembly is adapted to release the locking of the girder column by the limiting structure, and the ejector oil cylinder assembly is adapted to be self-locked with the ejector locking pin.
[0006] Preferably, the ejector oil cylinder assembly comprises an open edge ring and an oil cylinder. The oil cylinder is fixedly installed on the external mold plate. The open edge ring is slidingly installed on the external mold plate and cooperatively connected with the output end of the oil cylinder. A limiting hole is arranged on the open edge ring, and the ejector locking pin is inserted into the external mold plate through the limiting hole. The open edge ring is adapted to move under the drive of the oil cylinder, so that the limiting hole moves relative to the ejector locking pin to form the self-locking cooperation.
[0007] Preferably, a locking block is arranged in the limiting hole, and a locking groove is arranged on the ejector locking pin. First and second inclined surfaces are respectively arranged on the locking block and the locking groove. The open edge ring is adapted to move under the drive of the oil cylinder, so that the first and second inclined surfaces are frictionally locked to form the self-locking cooperation.
[0008] Preferably, the open edge ring is provided with a limiting end in the shape of a semicircle; the outer side of the column is provided with a ring groove in the circumferential direction; the limiting end is adapted to be clamped in the ring groove to form the limiting structure.
[0009] Preferably, the open edge ring has a pair of open edge rings which are symmetrically arranged along the axis of the column.
[0010] Preferably, the limiting hole on the open edge ring is provided with a pair of limiting holes which are symmetrically arranged along the height direction of the open edge ring; each limiting hole is provided with the extraction column locking pin.
[0011] Preferably, the opposite ends of the limiting hole are provided with locking blocks; the locking groove is provided with a pair of locking grooves which are symmetrically arranged along the axis of the extraction column locking pin.
[0012] Preferably, the extraction oil cylinder assembly further comprises a mounting seat; the mounting seat is fitted and mounted on the external formwork; the open edge ring and the oil cylinder are fitted and mounted on the mounting seat; the extraction column locking pin is inserted into the mounting seat.
[0013] Preferably, the mounting seat is provided with a first mounting hole; the extraction column locking pin is inserted into the mounting seat through the first mounting hole.
[0014] Preferably, the mounting seat is further provided with a second mounting hole; the open edge ring is provided with a limiting column; the oil cylinder is fixedly arranged outside the mounting seat; the limiting column is adapted to extend out of the second mounting hole and be connected with the oil cylinder.
[0015] Compared with the prior art, the beneficial effects of the present application are as follows:
[0016] Compared with the existing extraction oil cylinder locking structure, the present application is provided with an extraction oil cylinder assembly and an extraction column locking pin, so that when the column needs to be separated from the external formwork, the extraction oil cylinder assembly can release the locking of the column through the limiting structure, and the extraction oil cylinder assembly and the extraction column locking pin can be self-locked, thereby enhancing the stability during locking. BRIEF DESCRIPTION OF DRAWINGS
[0017] Figure 1 It is a schematic diagram of the overall structure of the present application.
[0018] Figure 2 It is a schematic diagram of the structure of the extraction oil cylinder assembly in the present application.
[0019] Figure 3 It is a schematic diagram of the structure of the mounting seat in the present application.
[0020] Figure 4 It is a schematic diagram of the structure of the open edge ring in the present application.
[0021] Figure 5 It is the plane schematic view of the locking block in the utility model.
[0022] Figure 6 It is the structure schematic view of the pull-out locking pin in the utility model.
[0023] Figure 7 It is the plane schematic view of the locking groove in the utility model.
[0024] Figure 8 It is the structure schematic view of the pull-out locking pin and the open edge ring in the utility model when not being self-locked.
[0025] Figure 9 It is the structure schematic view of the pull-out locking pin and the open edge ring in the utility model when being self-locked.
[0026] Figure 10 It is the structure schematic view of the pull-out locking pin and the open edge ring in the utility model when not being self-locked.
[0027] Figure 11 It is the overall cross-sectional structure schematic view of the utility model.
[0028] In the figure: the pull-out locking pin 1, the ring groove 10, the pull-out oil cylinder assembly 2, the mounting seat 20, the first mounting hole 200, the second mounting hole 201, the driving part 21, the open edge ring 22, the limiting end 220, the limiting hole 221, the locking block 2210, the first inclined surface 2211, the limiting column 222, the pull-out locking pin 3, the locking groove 30, the second inclined surface 300. DETAILED DESCRIPTION
[0029] In the following, the application will be further described in conjunction with specific embodiments, and it should be noted that the following described embodiments or technical features can be combined in any manner to form new embodiments without conflict.
[0030] In the description of the present application, it should be noted that for orientation words, such as the terms "center", "transverse", "longitudinal", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", etc. indicate the orientation and positional relationship based on the orientation or positional relationship shown in the drawings, and are only for the convenience of describing the present application and simplifying the description, and do not indicate or imply that the devices or elements referred to must have a particular orientation, be constructed and operated in a particular orientation, and cannot be understood as limiting the specific protection scope of the present application.
[0031] It should be noted that the terms "first", "second" and the like in the description and claims of the application are used for distinguishing between similar objects and are not necessarily used to describe a particular sequential or chronological order.
[0032] The terms "comprise", "comprising", "include", "including" and the like in the specification and claims of the application are used in their inclusive sense and do not exclude additional steps, elements, components, features or the like.
[0033] One preferred embodiment of the present application is shown in Figure 1 and Figure 2 A self-locking fixing structure of a draw rod, comprising a draw rod column 1, a draw rod oil cylinder assembly 2 and a draw rod locking pin 3; the draw rod column 1 is slidingly installed on an external template; the draw rod oil cylinder assembly 2 is cooperatively installed on the external template; the draw rod locking pin 3 is inserted into the external template; the draw rod column 1 is adapted to be cooperatively connected with the draw rod oil cylinder assembly 2 through a limiting structure and locked; when the draw rod column 1 needs to be separated from the external template, the draw rod oil cylinder assembly 2 is adapted to release the locking of the draw rod column 1 by the limiting structure, and the draw rod oil cylinder assembly 2 is adapted to be self-locked with the draw rod locking pin 3.
[0034] It should be understood that in the prior art, the locking and fixing of the draw rod oil cylinder has always been a difficult problem to solve. Generally, the locking of the draw rod oil cylinder is maintained by a hydraulic system to maintain the locking film pressure, and a self-locking effect is formed by the high-pressure oil in the oil cylinder. When the hydraulic valve is closed, the oil is enclosed in the oil cylinder, and stable locking is achieved by pressure balance. If the draw rod oil cylinder is not locked and fixed, it may cause problems such as insufficient locking force of the overall equipment, abnormal wear of the mold, equipment vibration and decline in equipment stability.
[0035] Therefore, in the present embodiment, by providing the draw rod oil cylinder assembly 2 and the draw rod locking pin 3, when the draw rod column 1 needs to be separated from the external template, the draw rod oil cylinder assembly 2 can release the locking of the draw rod column 1 through the limiting structure, and the draw rod oil cylinder assembly 2 can be self-locked with the draw rod locking pin 3, thereby enhancing the stability during locking by mechanical self-locking.
[0036] In the present embodiment, as shown in Figure 1 and Figure 4As shown, the oil cylinder assembly 2 includes an open ring 22 and an oil cylinder; the oil cylinder is fixedly installed on the outer formwork; the open ring 22 is slidingly installed on the outer formwork and is connected with the output end of the oil cylinder; the open ring 22 is provided with a limiting hole 221, and the jack locking pin 3 is inserted into the outer formwork through the limiting hole 221; the open ring 22 is adapted to move under the driving of the oil cylinder, so that the limiting hole 221 moves relative to the jack locking pin 3 to form a self-locking connection.
[0037] Specifically, the oil cylinder is fixedly installed on the outer formwork, and the open ring 22 is connected with the output end of the oil cylinder, so that the oil cylinder can drive the open ring 22 to move; since the open ring 22 is provided with the limiting hole 221, the movement of the open ring 22 causes the limiting hole 221 to move with the open ring 22.
[0038] The limiting hole 221 can be self-locked with the jack locking pin 3, and the specific setting mode of the self-locking connection has various modes, and in the embodiment, a mode is preferably adopted, for example, Figures 4 to 7 As shown, the limiting hole 221 is provided with a locking block 2210, and the jack locking pin 3 is provided with a locking groove 30; the locking block 2210 and the locking groove 30 are respectively provided with a first inclined surface 2211 and a second inclined surface 300; the open ring 22 is adapted to move under the driving of the oil cylinder, so that the first inclined surface 2211 and the second inclined surface 300 are frictionally abutted and locked to form a self-locking connection.
[0039] Specifically, as shown in Figure 8 and Figure 9 The locking block 2210 and the locking groove 30 are respectively provided with a first inclined surface 2211 and a second inclined surface 300; the locking block 2210 can move towards the locking groove 30 under the driving of the oil cylinder, so that when the first inclined surface 2211 moves to a certain position, the first inclined surface 2211 will contact the second inclined surface 300, and as the first inclined surface 2211 continues to move, the first inclined surface 2211 will abut against the second inclined surface 300 and be self-locked.
[0040] The above-mentioned jack column 1 is adapted to be connected with the jack oil cylinder assembly 2 through the limiting structure and locked; the limiting structure has various setting modes, and in the embodiment, a mode is preferably adopted, for example, Figure 2 , Figure 4 , Figure 10 and Figure 11 As shown, the open ring 22 is provided with a semicircular limiting end 220; the outer side of the jack column 1 is provided with a ring groove 10 in the circumferential direction; the limiting end 220 is adapted to be clamped in the ring groove 10 to form the limiting structure. The jack oil cylinder assembly 2 is also provided with a driving member 21, which can be connected with the open ring 22 and drive the open ring 22 to move.
[0041] Specifically, the semi-circular limiting end 220 provided on the open edge ring 22 can be clamped in the ring groove 10 provided on the column 1, so that the open edge ring 22 can limit the column 1, and then drive the column 1 to move under the drive of the driving piece 21.
[0042] For the specific arrangement of the open edge ring 22, the limiting hole 221 and the extraction locking pin 3, there are many kinds; in the embodiment, it is preferred to be as shown in Figure 4 、 Figure 6 and Figure 11 , the open edge ring 22 is provided with a pair, and the pair of open edge rings 22 is arranged symmetrically along the axis of the column 1; the limiting hole 221 on the single open edge ring 22 is provided with a pair, and is arranged symmetrically along the height direction of the open edge ring 22; each limiting hole 221 is provided with a corresponding extraction locking pin 3; the opposite ends of the single limiting hole 221 are provided with locking blocks 2210; the locking groove 30 is provided with a pair, and the pair of locking grooves 30 is arranged symmetrically along the axis of the extraction locking pin 3.
[0043] Specifically, the open edge ring 22 is provided with a pair, and is arranged symmetrically along the axis of the column 1, so that the clamping of the limiting end 220 of the open edge ring 22 to the ring groove 10 is more stable, that is, the limiting clamping between the open edge ring 22 and the column 1 is more stable; the limiting hole 221 on the single open edge ring 22 is provided with a pair, and is arranged symmetrically along the height direction of the open edge ring 22; since the number of open edge rings 22 in the embodiment is provided with a pair, the number of limiting holes 221 provided in the embodiment is four, and the number of limiting holes 221 provided on the single open edge ring 22 is two; as described above, the extraction locking pin 3 passes through the limiting hole 221 and is connected to the external formwork, so the number of extraction locking pins 3 is also provided as four, which are arranged correspondingly in each limiting hole 221; as described above, the opposite ends of the single limiting hole 221 are provided with locking blocks 2210; the locking groove 30 is provided with a pair, and the pair of locking grooves 30 is arranged symmetrically along the axis of the extraction locking pin 3; that is, the locking blocks 2210 are provided with a pair, the locking grooves 30 are provided with a pair, and the first inclined surface 2211 and the second inclined surface 300 are also provided with a pair, which makes the self-locking cooperation between the extraction locking pin 3 and the limiting hole 221 more stable.
[0044] For the height direction of the open edge ring 22, when the limiting end 220 of the open edge ring 22 is removed, the open edge ring 22 is in a block shape; the height direction of the open edge ring 22 is the height direction when the open edge ring 22 is in a block shape.
[0045] In the embodiment, as shown in Figure 2 and Figure 3As shown, the oil cylinder assembly 2 further comprises a mounting base 20; the mounting base 20 is fitted and mounted on the outer formwork; the open ring 22, the oil cylinder and the jack locking pin 3 are all fitted and mounted on the mounting base 20; the mounting base 20 is provided with a first mounting hole 200; the jack locking pin 3 is inserted into the mounting base 20 through the first mounting hole 200. The mounting base 20 is further provided with a second mounting hole 201; the open ring 22 is provided with a limiting column 222; the oil cylinder is fixedly arranged outside the mounting base 20; the limiting column 222 is adapted to extend out of the second mounting hole 201 and be connected with the oil cylinder.
[0046] Specifically, the open ring 22 is mounted in the mounting base 20, the limiting hole 221 arranged on the open ring 22 corresponds in position to the first mounting hole 200 arranged on the mounting base 20, and the first mounting hole 200 is arranged through the opposite ends of the mounting base 20, so that the jack locking pin 3 is sequentially inserted through the first mounting hole 200, the limiting hole 221 and the first mounting hole 200 when being mounted; the limiting column 222 of the open ring 22 extends out of the second mounting hole 201, the limiting column 222 extends out of the mounting base 20 at the end away from the open ring 22, and the oil cylinder is arranged outside the mounting base 20, so that the limiting column 222 extends out of the mounting base 20 at the end away from the open ring 22 and is connected with the output end of the oil cylinder, so that the open ring 22 can be moved under the driving of the oil cylinder; the driving member 21 is also connected with the mounting base 20.
[0047] The above describes the basic principles, main features and advantages of the present application. It should be understood by those skilled in the art that the present application is not limited to the above embodiments, and the above embodiments and descriptions in the specification are only the principles of the present application. Without departing from the spirit and scope of the present application, various changes and improvements can be made to the present application, and these changes and improvements all fall within the scope of the present application. The scope of protection claimed by the present application is defined by the appended claims and their equivalents.
Claims
1. A self-locking fixing structure for a pull-out mechanism, characterized in that, The column is suitable for being connected with the oil cylinder assembly through the limiting structure and being locked; when the column needs to be separated from the external formwork, the oil cylinder assembly is suitable for unlocking the column, and the oil cylinder assembly is suitable for self-locking with the locking pin. The oil cylinder assembly comprises an open ring and an oil cylinder; the oil cylinder is fixedly installed on the external formwork; 2. The self-locking fixing structure of claim 1, wherein, The open ring is slidably installed on the external formwork and is connected with the output end of the oil cylinder; The open ring is provided with a limiting hole, and the locking pin is inserted into the external formwork through the limiting hole; The open ring is suitable for moving under the driving of the oil cylinder, so that the limiting hole moves relative to the locking pin to form the self-locking connection. The limiting hole is provided with a locking block, and the locking pin is provided with a locking groove; the locking block and the locking groove are respectively provided with a first inclined surface and a second inclined surface; the open ring is suitable for moving under the driving of the oil cylinder, so that the first inclined surface and the second inclined surface are frictionally locked to form the self-locking connection.
3. A self-locking fixing structure of a drawer as claimed in claim 2, wherein The open ring is provided with a semicircular limiting end; the outer side of the column is provided with a ring groove in the circumferential direction; the limiting end is suitable for being clamped in the ring groove to form the limiting structure.
4. The self-locking fixing structure of claim 2, wherein, The open ring has a pair of open rings which are symmetrically arranged along the axis of the column.
5. The self-locking fixing structure of claim 3, wherein, The limiting hole on the open ring is provided with a pair of limiting holes which are symmetrically arranged along the height direction of the open ring; each limiting hole is provided with a locking pin.
6. A self-locking fixing structure of a drawer as claimed in claim 5, wherein The opposite ends of the limiting hole are provided with a locking block; the locking groove is provided with a pair of locking grooves which are symmetrically arranged along the axis of the locking pin.
7. A self-locking fixing structure of a drawer according to claim 6, characterized in that, The oil cylinder assembly further comprises a mounting seat; the mounting seat is connected with the external formwork; the open ring and the oil cylinder are connected with the mounting seat; and the locking pin is inserted into the mounting seat.
8. A self-locking fixing structure of a drawer according to any one of claims 2 to 7, characterized in that, The mounting seat is provided with a first mounting hole; the locking pin is inserted into the mounting seat through the first mounting hole.
9. A self-locking fixing structure of a drawer according to claim 8, characterized in that, The mounting seat is further provided with a second mounting hole; the open ring is provided with a limiting column; the oil cylinder is fixedly arranged outside the mounting seat; and the limiting column is suitable for extending out of the second mounting hole and being connected with the oil cylinder.
10. The self-locking fastening structure according to claim 9, wherein