Oil cylinder protective cover production die

Abstract

The utility model discloses an oil cylinder protective cover production die and belongs to the field of dies. The oil cylinder protective cover production die comprises a fixed die, positioning holes are formed in the four corners of the upper surface of the fixed die, a die cavity is formed in the middle of the upper surface of the fixed die, a cylinder is connected into the positioning holes in the upper surface of the fixed die in a penetrating mode, and a lower column is arranged on the lower surface of the cylinder. The outer arc face of the lower column body penetrates into the narrow portion structure of the positioning hole, the upper surface of the barrel is provided with an upper edge end, three-dimensional positioning of the guide column is achieved through the clamping piece and the guide column through an inclined face friction self-locking mechanism, at the moment, elastic deformation of the clamping piece can be converted into radial holding force on the guide column, and therefore the clamping piece can be clamped. The guide positioning effect in the movable mold closing process is achieved, meanwhile, through the elastic energy storage design of the clamping pieces, impact loads generated at the moment of mold closing are effectively absorbed, the service life of the mold is prolonged by the cycle period, and therefore the situations that due to positioning and forming, the size precision of a produced protective cover is not enough, and the matching degree of the protective cover and an oil cylinder is not good are avoided.

Description

Technical Field

[0001] This utility model relates to the field of mold technology, specifically a production mold for a hydraulic cylinder protective cover. Background Technology

[0002] Hydraulic cylinders are key components in many mechanical devices and are widely used in industrial production. However, hydraulic cylinders are often exposed to complex working environments and are susceptible to damage from dust, liquids, oil, high temperatures, high pressures, and mechanical impacts. These factors can cause damage or wear to the cylinder seals, reduce the cylinder's working efficiency, and even affect the normal operation of the entire equipment. As a protective device, the hydraulic cylinder guard can effectively prevent external contaminants from entering the cylinder, avoid damage, extend the cylinder's service life, and is of great significance for ensuring the stable operation of the equipment.

[0003] Traditional hydraulic cylinder protective cover production molds may not be able to accurately position and shape the material during processing, resulting in insufficient dimensional accuracy of the produced protective cover and poor matching with the hydraulic cylinder. For example, during stamping or bending, the material may shift, causing deviations in the shape and size of the protective cover, affecting its protective effect.

[0004] Therefore, this utility model provides a production mold for hydraulic cylinder protective covers to solve the above problems. Utility Model Content

[0005] (a) Technical problems to be solved

[0006] This utility model provides a production mold for hydraulic cylinder protective covers, which aims to solve the problems mentioned in the background art.

[0007] (II) Technical Solution

[0008] To achieve the above objectives, this utility model provides the following technical solution: It includes a fixed mold, with positioning holes at all four corners of the upper surface of the fixed mold. A mold cavity is provided in the middle of the upper surface of the fixed mold. A cylindrical body is connected through the positioning holes on the upper surface of the fixed mold. A lower column is provided on the lower surface of the cylindrical body. The positioning hole has a structure that is wider at the top and narrower at the bottom. The outer arc surface of the lower column extends into the narrow part of the positioning hole. The upper surface of the cylindrical body has an upper edge end. An insert is fitted onto the side of the outer arc surface of the cylindrical body near the upper edge end. A stepped end is provided between the cylindrical body and the upper edge end. The lower surface of the insert abuts against the surface of the stepped end. The outer arc surface of the insert fits against the inner arc surface of the positioning hole. A clamping member is fitted onto the top of the inner arc surface of the cylindrical body. The top of the inner arc surface of the clamping member has a bent end. The lower surface of the bent end is placed on top of the insert.

[0009] As a preferred technical solution of this application, the clamping member has a partition in the middle of the inner arc surface, the surface of the partition is placed inside the cylinder, the bottom of the inner arc surface of the clamping member has a conical surface, and the bottom of the inner arc surface of the clamping member abuts against an inclined sleeve.

[0010] As a preferred technical solution of this application, the outer arc surface of the inclined sleeve is attached to the inner wall of the partition of the inner arc surface of the clamping member, the bent end of the upper surface of the clamping member is attached to the surface of the positioning hole, and the inner arc surface of the clamping member is connected to a guide post.

[0011] As a preferred technical solution of this application, one end of the guide post is connected through to the interior of the cylinder, a moving mold is fixedly installed at the top of the guide post, a fixing plate is fixedly installed in the middle of one side surface of the moving mold, and a drive rod is connected through to one side surface of the fixing plate.

[0012] As a preferred technical solution of this application, one end of the drive rod extends through the outside of the fixed plate and is connected to a moving block. The bottom surface of the moving mold near the moving block is provided with a sliding groove. A sealing pin is provided on one side of the moving block, and one end of the sealing pin is connected through to the inner wall of the mold cavity.

[0013] As a preferred technical solution of this application, a spring is sleeved in the guide post and the clamping member, one end of the spring is fixedly installed on the surface of the moving mold, and the other end of the spring abuts against the bent end of the top of the clamping member.

[0014] (III) Beneficial Effects

[0015] 1. The guide post is positioned in three dimensions by means of a self-locking mechanism of inclined friction between the clamping component and the guide post. At this time, the elastic deformation energy of the clamping component is converted into a radial clamping force on the guide post, which realizes the guiding and positioning effect during the mold closing process. At the same time, the elastic energy storage design of the clamping component effectively absorbs the impact load at the moment of mold closing, which increases the mold life and cycle cycle, thereby avoiding the situation where the protective cover produced is not dimensionally accurate and has poor matching with the oil cylinder due to positioning and molding.

[0016] 2. As the moving block and sealing pin move progressively with the moving block, the sealing pin assembly rigidly connected to it is gradually pulled out from inside the mold cavity. When the sealing pin is completely separated from the flow channel inside the mold cavity, the closed injection molding environment originally formed by the sealing ring at the head of the sealing pin is released. The pressure difference between the air pressure inside the mold cavity and the outside environment is formed instantaneously, thereby forming an air film between the mold cavity and the mold, reducing demolding resistance. Attached Figure Description

[0017] Figure 1 A schematic diagram of the overall structure of a production mold for a hydraulic cylinder protective cover;

[0018] Figure 2This is a schematic cross-sectional view of the connection between the fixed mold and the moving mold in a production mold for a hydraulic cylinder protective cover.

[0019] Figure 3 A schematic diagram showing the internal disassembly structure of the clamping component in a production mold for a hydraulic cylinder protective cover;

[0020] Figure 4 A schematic diagram of the three-dimensional cross-sectional structure of the cylinder of a production mold for a hydraulic cylinder protective cover;

[0021] Figure 5 This is a top view of the internal structure of the moving mold of a hydraulic cylinder protective cover production mold.

[0022] In the picture:

[0023] 1. Fixed mold; 101. Positioning hole; 2. Cylinder; 201. Lower column; 202. Upper edge; 3. Embedded kit; 4. Clamping element; 401. Bending end; 402. Partition; 403. Conical surface; 5. Angled sleeve; 6. Guide post; 7. Moving mold; 8. Fixed plate; 9. Drive rod; 10. Moving block; 11. Sealing pin; 12. Spring. Detailed Implementation

[0024] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0025] This utility model provides a mold, such as Figures 1 to 5As shown, the device includes a fixed mold 1. Positioning holes 101 are provided at the four corners of the upper surface of the fixed mold 1. A mold cavity is provided in the middle of the upper surface of the fixed mold 1. A cylindrical body 2 is connected through the positioning holes 101 on the upper surface of the fixed mold 1. A lower column 201 is provided on the lower surface of the cylindrical body 2. The positioning hole 101 has a structure that is wider at the top and narrower at the bottom. The outer arc surface of the lower column 201 extends into the narrow part of the positioning hole 101. An upper edge end 202 is provided on the upper surface of the cylindrical body 2. An insert fitting 3 is fitted onto the side of the outer arc surface of the cylindrical body 2 near the upper edge end 202. A stepped end is provided between the cylindrical body 2 and the upper edge end 202. The lower surface of the insert fitting 3 abuts against the surface of the stepped end. The outer arc surface of the insert fitting 3 fits against the fixed mold 1. On the inner arc surface of the positioning hole 101, a clamping member 4 is sleeved on the top of the inner arc surface of the cylinder 2. The top of the inner arc surface of the clamping member 4 is provided with a bent end 401. The lower surface of the bent end 401 is placed on the top of the embedded kit 3. A partition 402 is provided in the middle of the inner arc surface of the clamping member 4. The surface of the partition 402 is placed inside the cylinder 2. A conical surface 403 is provided at the bottom of the inner arc surface of the clamping member 4. An inclined sleeve 5 is abutted at the bottom of the inner arc surface of the clamping member 4. The outer arc surface of the inclined sleeve 5 is attached to the inner wall of the partition 402 of the inner arc surface of the clamping member 4. The bent end 401 on the upper surface of the clamping member 4 is attached to the surface of the positioning hole 101. A guide post 6 is connected through the inner arc surface of the clamping member 4.

[0026] After the hydraulic cylinder protective cover model is precisely placed in the middle cavity of the fixed mold 1, the sleeve cylinder 2 is embedded in the four corner positioning holes 101. The positioning holes 101 adopt a stepped variable diameter structure. The top hole diameter is designed to be interference fit with the outer arc surface of the cylinder 2, and the bottom hole diameter is adapted to the diameter of the lower column 201 fixed at the lower end of the cylinder 2, forming an embedded double positioning structure. When the moving mold 7 moves down along the vertical guide rail, the four guide columns 6 fixed to the bottom of the moving mold 7 are simultaneously inserted into the inner hole of the cylinder 2. The upper part of the guide column 6 is designed as a tapered expansion transition area, and its tapered angle forms a gradient fit with the initial inner hole taper of the clamping part 4.

[0027] The conical surface of the guide post 6 abuts against the elastic flare at the top of the clamping member 4. The conical surface wedges in, forcing the annular elastic arm of the clamping member 4 to expand radially. At this time, the inner inclined surface of the inclined sleeve 5 and the outwardly protruding wedge block of the clamping member 4 form an initial limit, ensuring that the clamping member 4 maintains uniform circumferential deformation during the expansion process. As the guide post 6 continues to descend, the equal-diameter positioning surface in the middle section of the post gradually cuts into the inner hole of the clamping member 4. At this time, due to the axial pressure of the moving mold 7 descending, the inclined sleeve 5 produces axial sliding and radial contraction linkage along the trapezoidal guide rail on the outer surface of the cylinder 2. The inner inclined surface of the inclined sleeve 5 applies centripetal pressure to the outer wedge block of the clamping member 4 at a 60° inclination angle, so that the clamping member 4 is subjected to a reverse contraction force while expanding radially, forming a dynamic equilibrium clamping state.

[0028] When the cylindrical boss at the lower end of the guide post 6 abuts against the inner top wall of the lower post 201, the inner inclined surface of the inclined sleeve 5 fits against the outer wedge of the clamping piece 4. The three-dimensional positioning of the guide post 6 is achieved through the inclined surface friction self-locking mechanism. At this time, the elastic deformation energy of the clamping piece 4 is converted into a radial clamping force on the guide post 6, realizing the guiding and positioning effect during the mold closing process of the moving mold 7. At the same time, through the elastic energy storage design of the clamping piece 4, the impact load at the moment of mold closing is effectively absorbed, thereby increasing the mold life and cycle life.

[0029] One end of the guide post 6 is connected to the inside of the cylinder 2. The top of the guide post 6 is fixedly installed with a moving mold 7. A fixed plate 8 is fixedly installed in the middle of one side surface of the moving mold 7. A drive rod 9 is connected through one side surface of the fixed plate 8. One end of the drive rod 9 extends to the outside of the fixed plate 8 and is connected to a moving block 10. A groove is opened on the bottom surface of the moving mold 7 near the moving block 10. A sealing pin 11 is provided on one side of the moving block 10. One end of the sealing pin 11 is connected through to the inner wall of the mold cavity. A spring 12 is sleeved in the guide post 6 and the clamping member 4. One end of the spring 12 is fixedly installed on the surface of the moving mold 7. The other end of the spring 12 abuts against the bent end 401 at the top of the clamping member 4.

[0030] Meanwhile, after the internal structure of the mold cavity is precisely shaped by injection molding, the drive rod 9 connected to the side of the starting mold 7 is driven. The extension length of the drive rod 9 is controlled by a servo. Under the linear motion of the drive rod 9, the moving block 10, which is hinged to the end of the drive rod 9, begins to move in a uniform linear motion in the opposite direction of the mold along the inner wall of the slide. As the moving block 10 moves gradually, the sealing pin 11 assembly rigidly connected to it is gradually pulled out from inside the mold cavity. When the sealing pin 11 is completely separated from the flow channel inside the mold cavity, the closed injection molding environment originally formed by the sealing ring at the head of the sealing pin 11 is released. The pressure difference between the air pressure inside the mold cavity and the outside instantly forms an air film between the mold cavity and the mold, reducing the demolding resistance.

[0031] The above description is only a preferred embodiment of the present utility model, but the protection scope of the present utility model is not limited thereto. Any equivalent substitutions or changes made by those skilled in the art within the technical scope disclosed in the present utility model, based on the technical solution and the inventive concept of the present utility model, should be included within the protection scope of the present utility model.

Claims

1. A cylinder boot production mold comprising a drag mold (1), characterized in that: The upper surface of the fixed mold (1) is provided with positioning holes (101) at four corners, the upper surface of the fixed mold (1) is provided with a mold cavity, and the upper surface of the fixed mold (1) is provided with a cylinder (2) penetratingly connected in the positioning hole (101), the lower surface of the cylinder (2) is provided with a lower column (201), the positioning hole (101) is provided with a structure of wide at the top and narrow at the bottom, the outer arc surface of the lower column (201) penetrates into the narrow structure of the positioning hole (101), the upper surface of the cylinder (2) is provided with an upper edge (202), the outer arc surface of the cylinder (2) is provided with an embedded sleeve (3) on one side close to the upper edge (202), the cylinder (2) and the upper edge (202) are provided with a stepped end, the lower surface of the embedded sleeve (3) abuts against the stepped end surface, the outer arc surface of the embedded sleeve (3) is attached to the inner arc surface of the positioning hole (101), the inner arc surface top of the cylinder (2) is provided with a clamping piece (4), the inner arc surface top of the clamping piece (4) is provided with a bending end (401), and the lower surface of the bending end (401) is placed on the top of the embedded sleeve (3).

2. The hydraulic cylinder boot production mold of claim 1, wherein: The inner arc surface middle of the clamping piece (4) is provided with a partition (402), the surface of the partition (402) is placed in the inside of the cylinder (2), the inner arc surface bottom of the clamping piece (4) is provided with a conical surface (403), and the inner arc surface bottom of the clamping piece (4) is provided with an inclined sleeve (5).

3. An oil cylinder boot production mold according to claim 2, characterized in that: The outer arc surface of the inclined sleeve (5) is attached to the inner wall of the partition (402) of the inner arc surface of the clamping piece (4), the surface of the bending end (401) of the upper surface of the clamping piece (4) is attached to the surface of the positioning hole (101), and the inner arc surface of the clamping piece (4) is penetratingly connected with a guide column (6).

4. An oil cylinder boot production mold according to claim 3, characterized in that: One end of the guide column (6) is penetratingly connected to the inside of the cylinder (2), the top end of the guide column (6) is fixedly installed with a movable mold (7), one side surface middle of the movable mold (7) is fixedly installed with a fixed plate (8), and one side surface of the fixed plate (8) is penetratingly connected with a driving rod (9).

5. An oil cylinder boot production mold according to claim 4, characterized in that: One end of the driving rod (9) penetrates to the outside of the fixed plate (8) and is connected with a moving block (10), the bottom surface of the movable mold (7) close to the moving block (10) is provided with a sliding groove, one side of the moving block (10) is provided with a sealing needle (11), and one end of the sealing needle (11) is penetratingly connected to the inner wall of the mold cavity.

6. The hydraulic cylinder boot production mold of claim 4, wherein: The guide column (6) and the clamping piece (4) are sleeved with a spring (12), one end of the spring (12) is fixedly installed on the surface of the movable mold (7), and the other end of the spring (12) abuts on the top bending end (401) of the clamping piece (4).

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