Hydraulic mold cylinder

Abstract

The utility model relates to the field of hydraulic technologies, in particular to a hydraulic mold cylinder which comprises a rack, a fixed mold, a movable mold and a hydraulic cylinder, the fixed mold is connected to the rack, the movable mold is slidably connected to the rack, the fixed mold and the movable mold are combined to form a mold cavity, and a cylinder body of the hydraulic cylinder is arranged on the side, away from the fixed mold, of the movable mold. And a piston rod of the hydraulic cylinder is connected to the movable mold. The hydraulic cylinder is arranged to push the movable die to be close to the fixed die, so that the movable die and the fixed die clamp the blank, then the blank in the die cavity is punched, the probability of extension and deformation of a product is reduced, and the product quality is improved.

Description

Technical Field

[0001] The present application relates to the field of hydraulic technology, and in particular to a hydraulic mold cylinder. Background Art

[0002] Die steel is a type of mold steel used to manufacture cold stamping dies, hot forging dies, die-casting dies and other molds. Mold materials are the material and technical basis of the mold manufacturing industry, among which mold steel is a traditional mold material.

[0003] Stamping is a metal processing method that mainly uses a press and a die to apply external force to plates, strips, tubes and profiles to cause them to undergo plastic deformation or separation, thereby obtaining a workpiece of the desired shape and size.

[0004] The traditional process of stamping products is to place the blank in the mold and use the stamping machine to directly stamp and form it, which can easily cause the product to stretch and deform, reducing product quality. In order to ensure product compliance, it is generally necessary to add an additional trimming process, which reduces processing efficiency. Utility Model Content

[0005] In order to improve product quality, the present application provides a hydraulic mold cylinder.

[0006] The hydraulic cylinder provided in this application adopts the following technical solution:

[0007] A hydraulic mold cylinder comprises a frame, a fixed mold, a movable mold and a hydraulic cylinder, wherein the fixed mold is connected to the frame, the movable mold is slidably connected to the frame, the fixed mold and the movable mold are combined to form a mold cavity, the cylinder body of the hydraulic cylinder is arranged on a side of the movable mold away from the fixed mold, and the piston rod of the hydraulic cylinder is connected to the movable mold.

[0008] By adopting the above technical solution, a hydraulic cylinder is set to push the movable mold close to the fixed mold, so that the movable mold and the fixed mold clamp the blank, and then the blank in the mold cavity is stamped, thereby reducing the probability of product extension and deformation and improving product quality.

[0009] Preferably, the frame includes a fixed plate and a fixed frame, the fixed frame is fixedly connected to the upper end of the fixed plate, the fixed mold is fixedly connected to the inner wall of the fixed frame, the movable mold is slidably connected to the inner wall of the fixed frame, and a through opening is provided at one end of the fixed frame away from the fixed mold, and the hydraulic cylinder piston rod is slidably connected to the inner wall of the through opening.

[0010] By adopting the above technical solution, the fixed frame limits the sliding of the movable mold, and the through port limits the sliding of the piston rod, so that the movable mold is not easily offset during the sliding process, the fixed mold and the movable mold are correctly molded, the mold cavity is complete, and the product quality is improved.

[0011] Preferably, it also includes a lifting piece, which is arranged between the fixed mold and the movable mold. The lifting piece includes a support block and a mold rod. One end of the support block is fixedly connected to the fixed mold, and the other end of the support block is slidably connected to the movable mold. The mold rod is fixedly connected to the upper end of the support block, and the mold rod is used for positioning and placing the blank.

[0012] By adopting the above technical solution, the mold rod positions the blank so that the blank is placed in the correct position, which is convenient for the subsequent movable mold and fixed mold to clamp it, reducing the probability of damage and deformation of the blank due to position offset, and improving product quality.

[0013] Preferably, the ejecting member further comprises an ejecting block, the ejecting block is slidably connected to the mold rod, and the sliding direction of the ejecting block is vertical.

[0014] By adopting the above technical solution, the top block slides up and down to demould the product, making it easier for the stamped workpiece to be separated from the mold, thereby improving production efficiency.

[0015] Preferably, the ejecting member further comprises an ejecting rod, the supporting block is provided with a through-hole, the axis of the through-hole is parallel to the sliding direction of the ejecting block, the ejecting rod is slidably connected to the inner wall of the through-hole, and the ejecting rod is fixedly connected to the ejecting block.

[0016] By adopting the above technical solution, the ejector rod slides and pushes the ejector block to move, which facilitates product release, improves demoulding efficiency, and improves product production efficiency.

[0017] Preferably, the fixed plate is provided with a discharge port, the discharge port is directly opposite to the top material piece, and the discharge port is used for the stamping workpiece to fall out.

[0018] By adopting the above technical solution, the demoulding workpiece drops directly from the discharge port, which is convenient for collecting the demoulding workpiece. There is no need to manually clamp the workpiece out of the mold, which is beneficial to product production efficiency.

[0019] Preferably, a limiting groove is provided on the inner wall of the fixed frame, the length direction of the limiting groove is parallel to the sliding direction of the movable mold, and a limiting block is connected to the end of the movable mold facing the limiting groove, and the limiting block is slidably embedded in the limiting groove.

[0020] By adopting the above technical solution, the limiting groove limits the sliding of the limiting block, thereby limiting the sliding of the movable mold, making it difficult for the fixed mold to shift up and down, thereby improving product quality.

[0021] Preferably, the ejecting member also includes a connecting rod, a sliding opening is provided at one end of the movable mold facing the fixed mold, the support block is slidably connected to the inner wall of the sliding opening, the inner wall of the sliding opening is provided with an avoidance opening, the length direction of the avoidance opening is perpendicular to the sliding direction of the movable mold, the avoidance opening extends to both ends to penetrate the movable mold, the connecting rod is connected to one end of the support block away from the fixed mold, the connecting rod is arranged in the avoidance opening, and both ends of the connecting rod are respectively connected to the fixed plate.

[0022] By adopting the above technical solution, the connecting rod and the fixed mold fix the two ends of the support block, and the movable mold and the fixed mold support the support block, so that the support block is evenly stressed and not easily damaged.

[0023] Preferably, the frame further comprises a fixing seat and a connecting block, the cylinder body of the hydraulic cylinder is fixedly connected to the fixing seat, one end of the connecting block is fixedly connected to the fixing seat, and the other end of the connecting block is fixedly connected to the fixing frame.

[0024] By adopting the above technical solution, the hydraulic cylinder is connected to the fixed seat, and the fixed seat is fixed to the fixed frame through the connecting block, so that when the hydraulic cylinder applies force, the fixed seat bears the recoil force of the hydraulic cylinder.

[0025] In summary, the present application includes at least one of the following beneficial technical effects:

[0026] 1. Set up a hydraulic cylinder to push the movable die close to the fixed die, so that the movable die and the fixed die clamp the blank, and then punch the blank in the die cavity, reducing the probability of product extension and deformation and improving product quality;

[0027] 2. The die rod positions the blank so that it is placed in the correct position, which is convenient for the subsequent movable die and fixed die to clamp it, reducing the probability of damage and deformation of the blank due to position offset and improving product quality;

[0028] 3. The workpiece after demoulding falls directly from the discharge port, which is convenient for collecting the demoulding workpiece. There is no need to manually clamp the workpiece out of the mold, which is conducive to product production efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0029] Figure 1 It is a schematic diagram of the overall structure of the hydraulic cylinder.

[0030] Figure 2 It is a schematic diagram of the internal structure of the hydraulic cylinder after it is cut open.

[0031] Figure 3 It is a schematic diagram of the overall structure of the fixed mold, movable mold and ejector.

[0032] Explanation of the reference numerals in the accompanying drawings: 1. Frame; 11. Fixed plate; 111. Discharge port; 12. Fixed frame; 121. Limiting groove; 122. Through port; 13. Fixed seat; 131. Fixed port; 14. Connecting block; 2. Fixed mold; 21. Mold cavity; 22. Positioning port; 3. Moving mold; 31. Limiting block; 32. Sliding port; 33. Avoidance port; 4. Hydraulic cylinder; 5. Ejecting member; 51. Support block; 511. Through port; 52. Connecting rod; 53. Mold rod; 54. Ejecting block; 541. Sliding sleeve port; 55. Ejecting rod; 56. Connecting plate; 57. Cylinder. DETAILED DESCRIPTION

[0033] The following is combined with Figure 1-3 This application is described in further detail.

[0034] The present application embodiment discloses a hydraulic mold cylinder. Figure 1 The hydraulic mold cylinder includes a frame 1, a fixed mold 2, a movable mold 3, a hydraulic cylinder 4 and a ejector 5.

[0035] Reference Figure 1 and Figure 2 The frame 1 includes a fixed plate 11, a fixed frame 12, a fixed seat 13 and a connecting block 14. The fixed frame 12 is fixedly connected to the upper end of the fixed plate 11. The fixed plate 11 is provided with a discharge port 111. The discharge port 111 is directly opposite to the inside of the fixed frame 12. The discharge port 111 vertically penetrates the fixed plate 11. The fixed seat 13 is arranged on the outer periphery of the fixed frame 12 and the fixed plate 11. One end of the connecting block 14 is fixedly connected to the outer wall of the fixed frame 12, and the other end of the connecting block 14 is fixedly connected to the fixed seat 13. Two connecting blocks 14 are provided, and the two connecting blocks 14 are respectively connected to the two ends of the fixed frame 12.

[0036] The two opposite inner walls of the fixed frame 12 are provided with limiting grooves 121, the length direction of the limiting grooves 121 is parallel to the fixed plate 11 and perpendicular to the fixed seat 13, and the limiting grooves 121 extend in the direction away from the fixed plate 11 to penetrate the fixed frame 12. The fixed mold 2 is fixedly connected to the inner wall of the fixed frame 12 facing the fixed seat 13, and the movable mold 3 is arranged between the fixed mold 2 and the fixed seat 13. The movable mold 3 is slidably connected to the inner wall of the fixed frame 12, and the sliding direction of the movable mold 3 is parallel to the length direction of the limiting grooves 121. Both ends of the movable mold 3 are fixedly connected to the limiting blocks 31, and the limiting blocks 31 are arranged one by one with the limiting grooves 121. The limiting blocks 31 are slidably embedded in the limiting grooves 121, and the lower ends of the fixed mold 2 and the movable mold 3 are extended into the discharge port 111.

[0037] Reference Figure 1 and Figure 2A through-port 122 is provided on the outer wall of the fixed frame 12 facing the fixed seat 13, the axis of the through-port 122 is parallel to the sliding direction of the movable mold 3, two through-ports 122 are provided, and the two through-ports 122 are evenly spaced along the length direction of the movable mold 3, the fixed seat 13 is provided with a fixed port 131, the axis of the fixed port 131 is parallel to the axis of the through-port 122, the fixed port 131 passes through the fixed seat 13, the cylinder body of the hydraulic cylinder 4 is fixedly connected to the inner wall of the fixed port 131, the piston rod of the hydraulic cylinder 4 is slidably connected to the inner wall of the through-port 122, and the piston rod of the hydraulic cylinder 4 is fixedly connected to the end of the movable mold 3 away from the fixed mold 2.

[0038] The movable mold 3 and the fixed mold 2 are combined to form a mold cavity 21, and the mold cavity 21 is used for stamping and forming a workpiece.

[0039] Reference Figure 3 The ejector 5 includes a support block 51, a connecting rod 52, a mold rod 53, an ejector block 54, an ejector rod 55, a connecting plate 56 and a cylinder 57. The ejector 5 is arranged between the fixed mold 2 and the movable mold 3. The movable mold 3 is provided with a sliding opening 32 at one end facing the fixed mold 2, and a positioning opening 22 is provided at one end of the fixed mold 2 facing the movable mold 3. The positioning opening 22 and the sliding opening 32 are arranged opposite to each other. One end of the support block 51 is fixedly connected to the inner wall of the positioning opening 22, and the other end of the support block 51 is slidably connected to the inner wall of the sliding opening 32.

[0040] Reference Figure 2 and Figure 3 The inner wall of the sliding opening 32 is provided with an escape opening 33, the length direction of the escape opening 33 is parallel to the length direction of the movable mold 3, and the escape opening 33 extends to both ends to penetrate the movable mold 3. The connecting rod 52 is fixedly connected to the end of the support block 51 away from the fixed mold 2, and the two ends of the connecting rod 52 are respectively fixedly connected to the inner wall of the discharge port 111, and the connecting rod 52 is arranged in the escape opening 33.

[0041] The mold rod 53 is fixedly connected to the upper end of the support block 51. The mold rod 53 is used for positioning and placing the blank. The top block 54 is provided with a sliding sleeve opening 541. The sliding sleeve opening 541 passes through the top block 54. The top block 54 is sleeved on the outer periphery of the mold rod 53. The mold rod 53 is slidably connected to the inner wall of the sliding sleeve opening 541. The sliding direction of the top block 54 is vertical. When the height of the top block 54 is the lowest, the mold rod 53 extends out of the sliding sleeve opening 541.

[0042] Reference Figure 2 and Figure 3The support block 51 is provided with a through hole 511, the axis of the through hole 511 is vertical, and there are multiple through holes 511, and the multiple through holes 511 are evenly spaced around the axis of the mold rod 53. The ejecting rod 55 is slidably connected to the inner wall of the through hole 511, the upper end of the ejecting rod 55 is fixedly connected to the lower end of the ejecting block 54, and the lower end of the ejecting rod 55 is fixedly connected to the connecting plate 56. The cylinder body of the cylinder 57 is fixedly connected to the lower end of the support block 51 through a connecting column, and the piston rod of the cylinder 57 is fixedly connected to the lower end of the connecting plate 56.

[0043] The implementation principle of a hydraulic die cylinder in an embodiment of the present application is: the blank is placed on the die rod 53, the hydraulic cylinder 4 drives the movable die 3 to approach the fixed die 2, so that the movable die 3 and the fixed die 2 clamp the blank in the die cavity 21, the stamping part slides downward to stamp the blank into a product, and the stamping part is reset after the stamping is completed, the hydraulic cylinder 4 drives the movable die 3 away from the fixed die 2, and the cylinder 57 drags the ejector rod 55 to move upward to drive the ejector block 54 to move upward, so that the product is separated from the die rod 53 and falls from the discharge port 111.

[0044] The above are all preferred embodiments of the present application, and the protection scope of the present application is not limited thereto. Therefore, any equivalent changes made according to the structure, shape, and principle of the present application should be included in the protection scope of the present application.

Claims

1. A hydraulic cylinder, characterized in that: The invention comprises a frame (1), a fixed mold (2), a movable mold (3) and a hydraulic cylinder (4), wherein the fixed mold (2) is connected to the frame (1), the movable mold (3) is slidably connected to the frame (1), the fixed mold (2) and the movable mold (3) are combined to form a mold cavity (21), the cylinder body of the hydraulic cylinder (4) is arranged on a side of the movable mold (3) away from the fixed mold (2), and the piston rod of the hydraulic cylinder (4) is connected to the movable mold (3).

2. The hydraulic cylinder according to claim 1, characterized in that: The frame (1) comprises a fixed plate (11) and a fixed frame (12); the fixed frame (12) is fixedly connected to the upper end of the fixed plate (11); the fixed mold (2) is fixedly connected to the inner wall of the fixed frame (12); the movable mold (3) is slidably connected to the inner wall of the fixed frame (12); a through hole (122) is provided at one end of the fixed frame (12) away from the fixed mold (2); and the piston rod of the hydraulic cylinder (4) is slidably connected to the inner wall of the through hole (122).

3. The hydraulic cylinder according to claim 2, characterized in that: The invention also comprises a material ejecting member (5), wherein the material ejecting member (5) is arranged between the fixed die (2) and the movable die (3), and the material ejecting member (5) comprises a support block (51) and a die rod (53), wherein one end of the support block (51) is fixedly connected to the fixed die (2), and the other end of the support block (51) is slidably connected to the movable die (3), and the die rod (53) is fixedly connected to the upper end of the support block (51), and the die rod (53) is used for positioning and placing the blank.

4. The hydraulic cylinder according to claim 3, characterized in that: The ejecting member (5) further comprises an ejecting block (54), wherein the ejecting block (54) is slidably connected to the mold rod (53), and the sliding direction of the ejecting block (54) is vertical.

5. The hydraulic cylinder according to claim 4, characterized in that: The ejecting member (5) further comprises an ejecting rod (55); the supporting block (51) is provided with a through opening (511); the axis of the through opening (511) is parallel to the sliding direction of the ejecting block (54); the ejecting rod (55) is slidably connected to the inner wall of the through opening (511); and the ejecting rod (55) is fixedly connected to the ejecting block (54).

6. The hydraulic cylinder according to claim 4, characterized in that: The fixed plate (11) is provided with a discharge port (111), the discharge port (111) is directly opposite to the top material piece (5), and the discharge port (111) is used for the stamped workpiece to fall out.

7. The hydraulic cylinder according to claim 6, characterized in that: A limiting groove (121) is provided on the inner wall of the fixed frame (12), the length direction of the limiting groove (121) is parallel to the sliding direction of the movable mold (3), the end of the movable mold (3) facing the limiting groove (121) is connected to a limiting block (31), and the limiting block (31) is slidably embedded in the limiting groove (121).

8. The hydraulic cylinder according to claim 3, characterized in that: The ejector member (5) further comprises a connecting rod (52); a sliding opening (32) is provided at one end of the movable mold (3) facing the fixed mold (2); the support block (51) is slidably connected to the inner wall of the sliding opening (32); an avoidance opening (33) is provided on the inner wall of the sliding opening (32); a length direction of the avoidance opening (33) is perpendicular to the sliding direction of the movable mold (3); the avoidance opening (33) extends to both ends to penetrate the movable mold (3); the connecting rod (52) is connected to one end of the support block (51) away from the fixed mold (2); the connecting rod (52) is arranged in the avoidance opening (33); and both ends of the connecting rod (52) are respectively connected to the fixed plate (11).

9. The hydraulic cylinder according to claim 2, characterized in that: The frame (1) further comprises a fixing seat (13) and a connecting block (14); a cylinder body of the hydraulic cylinder (4) is fixedly connected to the fixing seat (13); one end of the connecting block (14) is fixedly connected to the fixing seat (13); and the other end of the connecting block (14) is fixedly connected to the fixing frame (12).

Images