Die positioning guide structure with buffering function

Abstract

The utility model relates to the technical field of machining die jigs, and discloses a die positioning guide structure with a buffering function, which comprises a bottom plate, guide columns are fixedly connected to four corners of the upper part of the bottom plate, the upper ends of the guide columns are fixedly connected to four corners of the lower part of an upper plate, and a pressing plate is slidably connected to the peripheries of the guide columns. A hydraulic cylinder is installed in the middle of the upper plate, the output end of the lower side of the hydraulic cylinder penetrates through the upper plate and is fixedly connected to the middle of a pressing plate, a protection mechanism is installed on the lower side of the pressing plate, an upper mold is installed in the middle of the lower side of the protection mechanism, and a bottom mold is installed in the middle of the upper side of the bottom plate. According to the die positioning guide structure with the buffering function, when the protection mechanism deviates in the downward moving process, hydraulic oil between the partition plate and the connecting plate flows to the position between the partition plate and the movable plate through the communicating groove, so that the upper die retracts into the protection shell, the upper die, the bottom die and a part to be stamped are prevented from being damaged, and the service life of the die is prolonged. The economic loss is reduced.

Description

Technical Field

[0001] This utility model relates to the field of machining mold fixture technology, and in particular to a mold positioning guide structure with a buffer function. Background Technology

[0002] Molds are essential process equipment for producing various products. They are used to process raw materials into parts in a specific shape and through certain methods. Especially in the field of machinery manufacturing, the use of mold forming methods to produce parts is one of the most common processing steps. Stamping mold forming technology is widely used in mold machining manufacturing processes. It has many advantages such as high production efficiency, good quality, low cost, and saving raw materials, and has become an important link in modern industrial production. Mold positioning is even more important, as it relates to the quality of the finished product. Especially for high-precision mold and fixture forming processes, mold positioning is the core of the process.

[0003] In the past, the methods used for mold closing and positioning of stamping dies were very simple. They were all achieved by using the protruding structure of the positioning pin in conjunction with the recessed structure of the positioning pin on the die. However, after long-term use, the position is prone to shifting, which leads to mold closing failure, economic losses, and affects subsequent processing. Utility Model Content

[0004] The main purpose of this utility model is to provide a mold positioning guide structure with a buffer function, which can effectively solve the problems in the background art.

[0005] To achieve the above objectives, the technical solution adopted by this utility model is as follows: a mold positioning guide structure with buffer function, including a base plate, guide posts fixedly connected to the four corners of the upper part of the base plate, the upper ends of the guide posts fixedly connected to the four corners of the lower part of the upper plate, a pressing plate slidably connected to the outer periphery of the guide posts, a hydraulic cylinder installed in the middle of the upper plate, the lower output end of the hydraulic cylinder penetrating the upper plate and fixedly connected to the middle of the pressing plate, a protective mechanism installed on the lower side of the pressing plate, an upper mold installed in the middle of the lower side of the protective mechanism, and a bottom mold installed in the middle of the upper part of the base plate;

[0006] The protective mechanism includes a protective shell, a partition, multiple connecting slots, a movable plate, a connecting plate, a limiting component, a centering component, and an exhaust port. The exhaust port is located on the upper side wall of the protective shell. The outer periphery of the partition is fixedly connected to the middle of the protective shell. The outer periphery of the movable plate is slidably connected to the upper inner side of the protective shell. The outer periphery of the connecting plate is slidably connected to the lower inner side of the protective shell. The upper part of the connecting plate is connected to the partition through multiple limiting components. Multiple connecting slots are provided on the side wall of the protective shell. The two ends of the connecting slots are connected to the interior of the protective shell, and the two ends of the connecting slots are located on the upper and lower sides of the partition. The centering component is located in the middle of the connecting slot. The upper mold is installed on the lower part of the connecting plate. Hydraulic oil is provided inside the protective shell.

[0007] Preferably, a spring three is provided on the outer periphery of the guide post, and the spring three is disposed between the base plate and the pressing plate.

[0008] Preferably, a groove is provided in the middle of the upper side of the protective shell, a flexible magnetic sheet is magnetically attracted inside the groove, and a filter screen is provided in the middle of the flexible magnetic sheet.

[0009] Preferably, the limiting assembly includes a connecting rod, a spring, and a limiting block. The lower end of the connecting rod is fixedly connected to the four upper corners of the connecting plate, and the upper end of the connecting rod is slidably connected to the four corners of the partition. The middle part of the limiting block is fixedly connected to the upper end of the connecting rod. The spring is sleeved on the outer periphery of the connecting rod, and the spring is disposed between the partition and the connecting plate.

[0010] Preferably, the plurality of the connecting slots are distributed on the left and right sides of the protective shell, and there are at least three connecting slots.

[0011] Preferably, the centering assembly includes a cavity, a second spring, a sealing post, and a centering rod. The cavity is formed on the side wall of the protective shell and is connected to the communicating groove. The outer periphery of the sealing post is also connected to the inside of the cavity. The upper end of the centering rod is fixedly connected to the middle of the sealing post. The second spring is disposed on the upper part of the sealing post. The sealing post seals the upper end of the communicating groove.

[0012] Preferably, the bottom mold has multiple holes, and each hole corresponds to a centering rod.

[0013] Compared with the prior art, the present invention has the following beneficial effects:

[0014] 1. When the protective mechanism deviates during its downward movement, the centering component will move, thereby connecting the upper and lower sides of the partition plate through the connecting groove. When the upper mold touches the part to be stamped, the protective shell continues to move downward under the action of the hydraulic cylinder, causing the connecting plate to retract into the protective shell. The hydraulic oil between the partition plate and the connecting plate flows through the connecting groove to the space between the partition plate and the movable plate, thereby causing the upper mold to retract into the protective shell, thus preventing damage to the upper mold, the bottom mold and the part to be stamped, and reducing economic losses. Attached Figure Description

[0015] Figure 1 This is a three-dimensional structural diagram of a mold positioning guide structure with buffer function according to the present invention;

[0016] Figure 2 This is a schematic diagram of a protective mechanism for a mold positioning guide structure with buffer function according to the present invention;

[0017] Figure 3 This is a schematic diagram of a limiting component of a mold positioning guide structure with buffer function according to the present invention;

[0018] Figure 4 This is a schematic diagram of the centering component of a mold positioning guide structure with buffer function according to the present invention.

[0019] In the diagram: 1. Base plate; 2. Guide post; 3. Upper plate; 4. Pressing plate; 5. Hydraulic cylinder; 6. Protective mechanism; 601. Protective shell; 602. Partition plate; 603. Connecting groove; 604. Movable plate; 605. Connecting plate; 606. Filter screen; 607. Limiting component; 6071. Connecting rod; 6072. Spring 1; 6073. Limiting block; 608. Centering component; 6081. Cavity; 6082. Spring 2; 6083. Sealing post; 6084. Centering rod; 609. Exhaust port; 610. Groove; 611. Flexible magnetic sheet; 7. Bottom mold; 8. Spring 3; 9. Upper mold. Detailed Implementation

[0020] To make the technical means, creative features, objectives and effects of this utility model easier to understand, the present utility model will be further described below in conjunction with specific embodiments.

[0021] like Figure 1-4 As shown, a mold positioning guide structure with buffer function includes a base plate 1, guide posts 2 are fixedly connected to the four corners of the upper part of the base plate 1, the upper ends of the guide posts 2 are fixedly connected to the four corners of the lower part of the upper plate 3, a pressing plate 4 is slidably connected to the outer periphery of the guide posts 2, a hydraulic cylinder 5 is installed in the middle of the upper plate 3, the lower output end of the hydraulic cylinder 5 passes through the upper plate 3 and is fixedly connected to the middle of the pressing plate 4, a protective mechanism 6 is installed on the lower side of the pressing plate 4, an upper mold 9 is installed in the middle of the lower side of the protective mechanism 6, and a bottom mold 7 is installed in the middle of the upper side of the base plate 1.

[0022] The protective mechanism 6 includes a protective shell 601, a partition 602, multiple connecting slots 603, a movable plate 604, a connecting plate 605, a limiting component 607, a centering component 608, and an exhaust port 609. The exhaust port 609 is located on the upper side wall of the protective shell 601. The outer periphery of the partition 602 is fixedly connected to the middle of the protective shell 601. The outer periphery of the movable plate 604 is slidably connected to the upper inner side of the protective shell 601. The outer periphery of the connecting plate 605 is slidably connected to the lower inner side of the protective shell 601. The upper part of the connecting plate 605 is connected to the partition plate 602 via multiple limiting components 607. Multiple connecting grooves 603 are provided on the side wall of the protective shell 601. The two ends of the connecting grooves 603 are connected to the interior of the protective shell 601, and the two ends of the connecting grooves 603 are located on the upper and lower sides of the partition plate 602. The centering component 608 is located in the middle of the connecting grooves 603. The upper mold 9 is installed on the lower part of the connecting plate 605. Hydraulic oil is provided inside the protective shell 601. During the downward movement of the protective mechanism 6, no hydraulic oil is present. When a misalignment occurs, the vent 609 seals the connecting groove 603, preventing the hydraulic oil between the connecting plate 605 and the partition plate 602 from moving. This allows the upper mold 9 to cooperate with the bottom mold 7 for stamping. When the protective mechanism 6 deviates during its downward movement, the centering component 608 moves, connecting the upper and lower sides of the partition plate 602 through the connecting groove 603. When the upper mold 9 touches the part to be stamped, the protective shell 601 continues to move downward under the action of the hydraulic cylinder 5, causing the connecting plate 605 to retract into the protective shell 601. The hydraulic oil between the partition plate 602 and the connecting plate 605 flows through the connecting groove 603 to the space between the partition plate 602 and the movable plate 604, causing the upper mold 9 to retract into the protective shell 601, thus preventing damage to the upper mold 9, the bottom mold 7, and the part to be stamped. When the hydraulic cylinder 5 moves the protective mechanism 6 upward away from the bottom mold 7, the limiting component 607 resets the connecting plate 605, thereby resetting the upper mold 9.

[0023] A spring 8 is provided on the outer periphery of the guide column 2. The spring 8 is located between the base plate 1 and the pressing plate 4. When the hydraulic cylinder 5 moves the pressing plate 4 downward, the spring 8 will buffer the pressing plate 4 to prevent the upper mold 9 from directly impacting the bottom mold 7, thereby protecting the upper mold 9 and the bottom mold 7 from damage.

[0024] A groove 610 is provided in the middle of the upper side of the protective shell 601. A flexible magnetic sheet 611 is magnetically attracted inside the groove 610. A filter screen 606 is provided in the middle of the flexible magnetic sheet 611. The filter screen 606 can prevent external dust from entering the upper part of the protective shell 601. The filter screen 606 can be easily and quickly removed for cleaning or maintenance through the flexible magnetic sheet 611.

[0025] The limiting assembly 607 includes a connecting rod 6071, a spring 6072, and a limiting block 6073. The lower end of the connecting rod 6071 is fixedly connected to the four upper corners of the connecting plate 605, and the upper end of the connecting rod 6071 is slidably connected to the four corners of the partition 602. The middle part of the limiting block 6073 is fixedly connected to the upper end of the connecting rod 6071. The spring 6072 is sleeved on the outer periphery of the connecting rod 6071 and is located between the partition 602 and the connecting plate 605. The connecting rod 6071 ensures that the connecting plate 605 moves smoothly up and down, the spring 6072 allows the connecting plate 605 to return to its original position, and the limiting block 6073 prevents the connecting plate 605 from detaching from the protective shell 601.

[0026] Multiple connecting grooves 603 are distributed on the left and right sides of the protective shell 601, and there are at least three connecting grooves 603. The multiple connecting grooves 603 can accelerate the flow speed of hydraulic oil, and multiple centering components 608 can detect whether the protective mechanism 6 has shifted from multiple directions.

[0027] The centering assembly 608 includes a cavity 6081, a second spring 6082, a sealing post 6083, and a centering rod 6084. The cavity 6081 is formed in the side wall of the protective shell 601 and is connected to the connecting groove 603. The outer periphery of the sealing post 6083 is also connected to the inside of the cavity 6081. The upper end of the centering rod 6084 is fixedly connected to the middle of the sealing post 6083. The second spring 6082 is disposed on the upper part of the sealing post 6083. The sealing post 6083 seals the upper end of the connecting groove 603. When centering... When the lower end of rod 6084 is blocked by bottom mold 7, centering rod 6084 will drive sealing column 6083 to compress spring 6082 and retract into cavity 6081, so that connecting groove 603 forms a passage, and hydraulic oil can pass through connecting groove 603. Hydraulic oil between partition plate 602 and connecting plate 605 flows through connecting groove 603 to between partition plate 602 and movable plate 604, thereby causing upper mold 9 to retract into protective shell 601, thus preventing damage to upper mold 9, bottom mold 7 and the part to be stamped.

[0028] The bottom mold 7 has multiple holes, and each hole corresponds to a centering rod 6084. When the lower end of the centering rod 6084 can be inserted into the hole, it proves that the protective mechanism 6 has not shifted during its downward movement. When the lower end of the centering rod 6084 cannot be inserted into the hole, it indicates that the protective mechanism 6 and the bottom mold 7 have shifted. This causes the connecting plate 605 to drive the upper mold 9 to retract into the protective shell 601, thereby effectively protecting the upper mold 9, the bottom mold 7, and the part to be stamped from damage.

[0029] Working principle:

[0030] When the protective mechanism 6 moves downward without any deviation, the vent 609 seals the connecting groove 603, preventing the hydraulic oil between the connecting plate 605 and the partition plate 602 from moving. This allows the upper mold 9 to cooperate with the bottom mold 7 for stamping. When the protective mechanism 6 moves downward, the centering component 608 moves, connecting the upper and lower sides of the partition plate 602 through the connecting groove 603. When the upper mold 9 touches the part to be stamped, the protective shell 601 continues to move downward under the action of the hydraulic cylinder 5, causing the connecting plate 605 to retract into the protective shell 601. The hydraulic oil between the partition plate 602 and the connecting plate 605 flows through the connecting groove 603 to the space between the partition plate 602 and the movable plate 604, causing the upper mold 9 to retract into the protective shell 601, thus preventing damage to the upper mold 9, the bottom mold 7, and the part to be stamped. When the hydraulic cylinder 5 moves the protective mechanism 6 upward away from the bottom mold 7, the limiting component 607 resets the connecting plate 605, thereby resetting the upper mold 9.

[0031] The above shows and describes the basic principles, main features and advantages of the present invention. Those skilled in the art should understand that the present invention is not limited to the above embodiments. The above embodiments and descriptions are merely illustrative of the principles of the present invention. Various changes and improvements may be made to the present invention without departing from the spirit and scope of the present invention. Such changes and improvements are intended to fall within the scope of the present invention. The scope of protection claimed in this invention is defined by the appended claims and their equivalents.

Claims

1. A mold positioning guide structure with a buffer function, comprising a base plate (1), characterized in that: The base plate (1) is fixedly connected to the four corners of the upper part with guide posts (2). The upper end of the guide posts (2) is fixedly connected to the four corners of the lower part of the upper plate (3). The outer periphery of the guide posts (2) is slidably connected with a pressing plate (4). A hydraulic cylinder (5) is installed in the middle of the upper plate (3). The lower output end of the hydraulic cylinder (5) passes through the upper plate (3) and is fixedly connected to the middle of the pressing plate (4). A protective mechanism (6) is installed on the lower side of the pressing plate (4). An upper mold (9) is installed in the middle of the lower side of the protective mechanism (6). A bottom mold (7) is installed in the middle of the upper side of the base plate (1). The protective mechanism (6) includes a protective shell (601), a partition (602), multiple connecting slots (603), a movable plate (604), a connecting plate (605), a limiting component (607), a centering component (608), and an exhaust port (609). The exhaust port (609) is located on the upper side wall of the protective shell (601). The outer periphery of the partition (602) is fixedly connected to the middle of the protective shell (601). The outer periphery of the movable plate (604) is slidably connected to the upper inner side of the protective shell (601). The outer periphery of the connecting plate (605) is slidably connected to the outer periphery of the protective shell (601). The lower part of the inner side of the connecting plate (605) is connected to the partition plate (602) through multiple limiting components (607). The side wall of the protective shell (601) is provided with multiple connecting grooves (603). The two ends of the connecting grooves (603) are connected to the inside of the protective shell (601). The two ends of the connecting grooves (603) are located on the upper and lower sides of the partition plate (602). The centering component (608) is located in the middle of the connecting grooves (603). The upper mold (9) is installed on the lower part of the connecting plate (605). Hydraulic oil is provided inside the protective shell (601).

2. The mold positioning guide structure with buffer function according to claim 1, characterized in that: A spring three (8) is provided on the outer periphery of the guide post (2), and the spring three (8) is located between the base plate (1) and the pressing plate (4).

3. The mold positioning guide structure with buffer function according to claim 1, characterized in that: The protective shell (601) has a groove (610) in the middle of its upper side, and a flexible magnetic sheet (611) is magnetically attracted inside the groove (610). A filter screen (606) is provided in the middle of the flexible magnetic sheet (611).

4. The mold positioning guide structure with buffer function according to claim 1, characterized in that: The limiting component (607) includes a connecting rod (6071), a spring (6072), and a limiting block (6073). The lower end of the connecting rod (6071) is fixedly connected to the four upper corners of the connecting plate (605), and the upper end of the connecting rod (6071) is slidably connected to the four corners of the partition plate (602). The middle part of the limiting block (6073) is fixedly connected to the upper end of the connecting rod (6071). The spring (6072) is sleeved on the outer periphery of the connecting rod (6071) and is disposed between the partition plate (602) and the connecting plate (605).

5. A mold positioning guide structure with buffer function according to claim 1, characterized in that: Multiple connecting slots (603) are distributed on the left and right sides of the protective shell (601), and there are at least three connecting slots (603).

6. The mold positioning guide structure with buffer function according to claim 1, characterized in that: The centering assembly (608) includes a cavity (6081), a second spring (6082), a sealing post (6083), and a centering rod (6084). The cavity (6081) is formed on the side wall of the protective shell (601) and is connected to the connecting groove (603). The outer periphery of the sealing post (6083) is also connected to the inside of the cavity (6081). The upper end of the centering rod (6084) is fixedly connected to the middle part of the sealing post (6083). The second spring (6082) is set on the upper part of the sealing post (6083). The sealing post (6083) seals the upper end of the connecting groove (603).

7. A mold positioning guide structure with buffer function according to claim 6, characterized in that: The bottom mold (7) has multiple holes, and each hole corresponds to a centering rod (6084).

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