Automatic cut-off device for tunnel gate

Abstract

This invention discloses an automatic material cutting device for tunnel-type gating systems, comprising a die, a punch, and a driving component. The die has several sets of cutting components, each including two sets of moving blocks. Each moving block has a material feeding groove, which cooperates to form a casting hole. A linkage assembly is provided between the die and the punch. The punch drives the two moving blocks to move via the linkage assembly. Each moving block has a fixed guide block. The punch has a guide groove. When the guide block moves along the guide groove, it causes the two moving blocks to separate. An ejector block is slidably connected to each moving block. The moving blocks are located within the material feeding groove. When the two moving blocks abut against each other, the end of the ejector block located within the material feeding groove is flush with the inner wall of the casting hole. A pushing component is provided between the ejector block and the die. When the moving block moves along the guide groove, the pushing component is used to bring the two ejector blocks closer together. This application has the effect of automatically shearing the material during demolding, improving the production efficiency of injection molds.

Description

Technical Field

[0001] This invention relates to the field of injection molding equipment, and more particularly to an automatic material cutting device for tunnel gates. Background Technology

[0002] During the product molding process in injection molds, the raw materials for casting the product usually form a material bundle at the mold's pouring gate that is directly connected to the product. The material bundle will be demolded along with the product and needs to be trimmed manually or mechanically afterward.

[0003] For related technology, please refer to Chinese Patent No. CN212171196U, which discloses an automatic material handle shearing machine. It includes a worktable, two sets of shearing devices and a feeding platform. Each set of shearing devices includes two sets of scissor mechanisms installed on the worktable and arranged opposite to each other. The feeding platform is fixedly installed above the scissor mechanisms and has scissor clearance holes at positions corresponding to the scissor mechanisms. A material handle clearance groove is opened on the platform between the two oppositely arranged scissor clearance holes. A product mounting groove is provided on the outside of each scissor clearance hole. Two arc-shaped positioning plates are fixedly installed at the product mounting groove, realizing automatic shearing of material handles, saving time and effort, and with high shearing efficiency.

[0004] Regarding the aforementioned technologies, when processing the product for material removal, workers need to demold the product and the material handle together before placing them into the aforementioned scissor mechanism for shearing. The process of transferring the product and manipulating the scissors for shearing takes a certain amount of time, affecting the production efficiency of the product. Therefore, there is an urgent need for an injection mold that can automatically separate the material handle from the injection molded product during the demolding process. Summary of the Invention

[0005] In order to automatically cut off the material during the demolding process and improve the production efficiency of injection molds, this application provides an automatic material cutting device for tunnel gates.

[0006] This application provides an automatic material cutting device for tunnel-type gating gates, employing the following technical solution:

[0007] An automatic material cutting device for tunnel gates includes a die and a punch. The die has a cavity for producing the product, and a drive component is fixedly mounted on the die to push the punch open. The die has several sets of cutting components, each including two sets of moving blocks. Each moving block has a material feeding groove, and the two material feeding grooves cooperate to form a casting hole. The diameter of the material feeding groove gradually decreases along its own axis towards the cavity. A linkage assembly is provided between the die and the punch. When the punch demolds from the die, the punch drives the two moving blocks through the linkage assembly. The two moving blocks move away from the die. Guide blocks are fixed on the side of the two moving blocks that are far apart from each other. The punch has a guide groove for limiting the guide blocks. When the guide blocks move along the guide groove, they cause the two moving blocks to separate. The moving blocks are slidably connected to an ejector block. The moving blocks are located in the material feed groove. When the two moving blocks abut against each other, the end of the ejector block in the material feed groove is flush with the inner wall of the casting hole. A pusher is provided between the ejector block and the die. When the moving blocks move along the guide groove, the pusher is used to drive the two ejector blocks to move closer to each other.

[0008] By adopting the above technical solution, after the product is formed between the punch and the die, the material handle stays in the casting hole formed by the two material feed grooves. The punch and the die are separated by the driving component. When the punch moves, the two moving blocks are driven to move by the linkage component. The two moving blocks cooperate to move the material handle. The shear stress between the moving blocks and the die shears the material handle, thereby separating the material handle from the product. When the moving blocks move, the guide blocks move along the guide groove. Under the cooperation of the guide blocks and the guide groove, the two moving blocks separate from each other. At this time, the die pushes the two ejector blocks to move closer to each other by the pushing component. The two ejector blocks cooperate to push the material handle out of the material feed groove, thereby realizing the separation of the material handle. The material handle is removed during the demolding process, which helps to reduce the time spent on removing the material handle and improve the processing efficiency of the product.

[0009] Optionally, the linkage assembly includes a connecting rod, a pulling column, a limiting plate, and an elastic element. The punch has a moving cavity adapted to the limiting plate. The end of the connecting rod away from the die passes through the punch and is positioned in the moving cavity. The limiting plate is fixedly connected to the connecting rod. The elastic element is located between the limiting plate and the punch and is used to push the limiting plate closer to the die. The pulling column is arranged perpendicularly to the connecting rod. The moving block has a moving groove adapted to the pulling column. The pulling column is located in the moving groove and abuts against the moving block.

[0010] By adopting the above technical solution, in the initial state, the elastic element is in a compressed state and pushes the limiting plate closer to the die. When the punch moves away from the die, the elastic element pushes the limiting plate along the moving cavity and makes the limiting plate abut against the punch. At this time, the punch drives the connecting rod to move through the limiting plate. Under the cooperation of the moving groove and the pulling column, when the connecting rod moves, it drives the moving block away from the die through the pulling rod, making it more convenient to move the moving block.

[0011] Optionally, the pulling column is fitted with a rotating tube, which rotates coaxially with the pulling column. The rotating tube is located in the moving groove and is tumbledly connected to the moving part.

[0012] By adopting the above technical solution, when the moving block moves, the pulling rod slides along the moving groove. The rotating tube helps to reduce the friction between the pulling rod and the moving part, thereby reducing the wear of the moving block and the pulling rod and extending the service life of the moving block and the pulling rod.

[0013] Optionally, the pushing component includes a push rod, a connecting tube, and an elastic element two. The connecting tube is located at the end of the ejector block away from the feed groove. The end of the connecting block near the ejector block has a receiving hole. The ejector block is fixedly connected to a push post, which is inserted into the receiving hole and extends axially along the receiving hole. The elastic element two is located in the receiving hole and is used to drive the ejector block to move away from the connecting tube. The push rod is located at the end of the connecting tube away from the ejector block, and one end of the push rod is hinged to the connecting tube, and the other end is hinged to the die. The push rod is inclined along the guide groove, and the moving block has a clearance groove adapted to the push rod.

[0014] By adopting the above technical solution, when the moving block moves away from the die, it drives the ejector block and the connecting tube to move. When the connecting tube moves, it drives the ejector rod to rotate in the relief groove. When the ejector rod rotates, it pushes the connecting tube closer to the ejector block. Under the limiting effect of the receiving hole on the ejector rod, when the connecting tube moves, it pushes the ejector block to move away from the ejector rod through the elastic element 2, thereby causing the ejector block to push the material out of the feed groove.

[0015] Optionally, each of the moving blocks is equipped with a blade, and the moving block has a cutting edge that communicates with the material feeding groove. The cutting edge is located at the end of the material feeding groove near the cavity. When the blade moves along the cutting edge, it is in the same direction as the diameter of the casting hole. Two sets of moving plates are slidably connected between the two moving blocks. The sliding direction of the moving plates is perpendicular to the moving direction of the blade. The blades are located between the two moving plates. A hinge rod is provided between the blade and the two moving plates. One end of the hinge rod is hinged to the blade, and the other end is hinged to the corresponding moving plate. An opening communicating with the casting hole is opened on the side of the two moving plates that are close to each other. An elastic element three is provided on the side of the moving plate that is away from the casting hole. The elastic element three is used to push the two moving plates close to each other. The punch is provided with a dividing element for driving the two blades close to each other.

[0016] By adopting the above technical solution, in the initial state, the two moving plates are in contact with each other under the action of the elastic element three, and at this time the two openings are connected to the casting hole. During demolding, the punch drives the two blades to move closer to each other along the cutting edge through the dividing element. When the blades move, the two moving plates move away from each other through the hinge rod. At this time, the elastic element three is in a compressed state. When the moving plates move, they avoid the blades, so that the blades cut the material bundle in the casting hole along the cutting edge, which helps to improve the convenience of dividing the material bundle.

[0017] Optionally, the dividing component includes a straight rod and an arc-shaped block. The moving block has a through groove communicating with the cutting edge. The straight rod is slidably connected to the moving block along the length of the through groove. The end of the straight rod away from the die is fixedly connected to the punch. The arc-shaped block is located in the through groove and is fixedly connected to the straight rod. When the arc-shaped block abuts against the blade, it pushes the blade to move along the cutting edge toward the casting hole.

[0018] By adopting the above technical solution, in the initial state, the punch and the die are in contact. At this time, the arc block is located on the side of the blade away from the punch. When the punch moves, it drives the straight rod to move along the through groove, so that the arc block moves closer to the blade and pushes the blade to move towards the casting hole, so that the blade cuts the material.

[0019] Optionally, the elastic element three includes a first connecting block, a second connecting block, and a thrust spring. The first connecting block is hinged to the end of the moving plate away from the opening, the second connecting block is hinged to the moving block, and the thrust spring is located between the first connecting block and the second connecting block, and the thrust spring is fixedly connected to both the first connecting block and the second connecting block.

[0020] By adopting the above technical solution, when the two moving blocks move away from each other, connecting block one and connecting block two work together to drive the thrust spring to rotate. At this time, the thrust spring deflects in the direction of the relative displacement between the moving block and the moving plate, which helps to reduce the torsional force on the thrust spring and improve the moving stability of the moving plate.

[0021] Optionally, the die is provided with a spring rod, which is located on the side of the moving block away from the punch and between the two moving blocks. The end of the spring rod away from the cavity is hinged to the die. A pulling block is slidably connected to the spring rod along its length. A pull rod adapted to the spring rod is fixedly connected to the punch. A rotating column adapted to the pull rod is rotatably connected to the pulling block. The pull rod passes through the rotating column and is fixedly connected to a stop block. A torsion spring is provided at the connection between the spring rod and the die, and the torsion spring is used to drive the spring rod closer to the die.

[0022] By adopting the above technical solution, the two moving blocks separate, and the ejector block moves the material handle out of the feed groove. At this time, the spring rod contacts the die cavity under the action of the torsion spring. When the punch moves, the pull rod drives the stop block to contact the rotating column. At this time, the rotating column drives the pull block to move along the length of the spring rod, so that the spring rod ejects the material handle between the two ejector blocks, thereby reducing the probability of the material handle sticking to the ejector block and improving the convenience of separating the material handle.

[0023] In summary, this application includes at least one of the following beneficial technical effects:

[0024] 1. After the product is formed between the punch and the die, the material stick stays in the casting hole formed by the two material grooves. The punch and the die are separated by the driving component. When the punch moves, the two moving blocks are moved by the linkage component. The two moving blocks cooperate to move the material stick. The shear stress between the moving blocks and the die shears the material stick, thereby separating the material stick from the product. When the moving blocks move, the guide blocks move along the guide groove. Under the cooperation of the guide blocks and the guide groove, the two moving blocks separate from each other. At this time, the die pushes the two ejector blocks to move closer to each other by the pushing component. The two ejector blocks cooperate to push the material stick out from the material groove, thereby realizing the separation of the material stick. The material stick is removed during the demolding process, which helps to reduce the time spent on removing the material stick and improve the processing efficiency of the product.

[0025] 2. In the initial state, the elastic element is compressed and pushes the limiting plate closer to the die. When the punch moves away from the die, the elastic element pushes the limiting plate along the moving cavity and makes the limiting plate abut against the punch. At this time, the punch drives the connecting rod to move through the limiting plate. With the cooperation of the moving groove and the pulling column, when the connecting rod moves, it drives the moving block away from the die through the pulling rod, making it more convenient to move the moving block.

[0026] 3. When the moving block moves away from the die, it drives the ejector block and the connecting tube to move. When the connecting tube moves, it drives the ejector rod to rotate in the relief groove. When the ejector rod rotates, it pushes the connecting tube closer to the ejector block. Under the limiting effect of the receiving hole on the ejector rod, when the connecting tube moves, it pushes the ejector block away from the ejector rod through the elastic element 2, thereby causing the ejector block to push the material out of the feed groove. Attached Figure Description

[0027] Figure 1 This is a schematic diagram of the overall structure of the embodiment.

[0028] Figure 2 This is a diagram designed to highlight the position of the moving block.

[0029] Figure 3 This is a schematic diagram designed to highlight the structure of the moving block.

[0030] Figure 4 This is a schematic diagram designed to highlight the structure of the guide groove.

[0031] Figure 5 This is a schematic diagram designed to highlight the connection between the moving block and the top block.

[0032] Figure 6 This is a schematic diagram designed to highlight the structure of the split components and blades.

[0033] Figure 7 This is a schematic diagram designed to highlight the structure of the interconnected components.

[0034] Figure 8 This is a schematic diagram designed to highlight the connection between the spring and the lever.

[0035] Explanation of reference numerals in the attached drawings: 1. Punch; 11. Moving cavity; 12. Tie rod; 121. Stop block; 2. Die; 21. Guide groove; 22. Spring rod; 221. Pulling block; 222. Rotating column; 223. Torsion spring; 3. Driving component; 41. Moving block; 411. Feed groove; 412. Guide block; 413. Moving groove; 414. Relief groove; 415. Cutting edge; 416. Through groove; 42. Ejector block; 421. Ejector pillar; 431. Ejector 432. Rod; 433. Connecting pipe; 434. Elastic component two; 435. Receiving hole; 5. Linkage assembly; 51. Connecting rod; 52. Pulling column; 521. Rotating pipe; 53. Limiting plate; 54. Elastic component one; 61. Blade; 62. Moving plate; 621. Opening; 63. Hinge rod; 64. Elastic component three; 641. Connecting block one; 642. Connecting block two; 643. Thrust spring; 7. Dividing component; 71. Straight rod; 72. Arc block. Detailed Implementation

[0036] The present application will be further described in detail below with reference to all the accompanying drawings.

[0037] This application discloses an automatic material cutting device for tunnel gates.

[0038] Reference Figure 1 and Figure 2 An automatic cutting device for tunnel gates includes a die 2 and a punch 1. A driving component 3 is provided between the die 2 and the punch 1. The driving component 3 can be a pneumatic cylinder or a hydraulic cylinder, used to drive the punch 1 and the die 2 to move closer to each other or separate.

[0039] Reference Figure 1 and Figure 2 The die 2 has a cavity in which the raw material is formed into a product. The die 2 has a cutting part, and the number of cutting parts is at least one. The cutting part includes two moving blocks 41. The die 2 has a mounting groove that matches the moving blocks 41. The moving blocks 41 are located in the mounting groove and abut against the inner wall of the mounting groove. The die 2 limits the moving blocks 41 through the mounting groove.

[0040] Reference Figure 3 and Figure 4 Guide blocks 412 are fixed on the side of the two moving blocks 41 that are far apart from each other. The die 2 has a guide groove 21 that is adapted to the guide block 412. The guide groove 21 is inclined in the direction from the die 2 to the punch 1 and gradually moves away from the moving block 41. The guide block 412 is located in the guide groove 21 and is slidably connected to the die 2 along the length of the guide groove 21.

[0041] Reference Figure 2 and Figure 5 Each of the two moving blocks 41 has a material feeding groove 411 on one side that is close to each other. When the two moving blocks 41 abut against each other, the two material feeding grooves 411 cooperate to form a pouring hole. The pouring hole is connected to the mold cavity. When the product is poured, the raw material enters the mold cavity along the pouring hole and cools and forms. At this time, the raw material in the pouring hole cools and solidifies into a material bundle. The diameter of the material feeding groove 411 gradually decreases along the axial direction towards the mold cavity, so that the diameter of the end of the material bundle near the product is smaller, making it easier for the material bundle to detach.

[0042] Reference Figure 3 and Figure 6 The movable block 41 has a cutting edge 415 on the side near the cavity. The cutting edges 415 of the two movable blocks 41 are interconnected. A blade 61 is slidably connected to the movable block 41 along the length of the cutting edge 415. The blade 61 moves closer to or away from the casting hole along the cutting edge 415. Two sets of movable plates 62 are also slidably connected between the two movable blocks 41. The sliding direction of the movable plates 62 is perpendicular to the blade 61. Both sets of movable plates 62 are located between the two movable blocks 41, and the two movable plates 62 are symmetrically arranged with the line connecting the two blades 61 as the center.

[0043] Reference Figure 3 and Figure 6 Each of the two movable plates 62 has an opening 621 on its side where they are close to each other. The opening 621 communicates with the pouring hole. When the two movable plates 62 are in contact with each other, the raw material passes through the opening 621 along the pouring hole and enters the cavity. The movable plates 62 block the raw material, reducing the probability of the raw material entering the cutting edge 415. A hinge rod 63 is provided between the blade 61 and the movable plate 62. One end of the hinge rod 63 is hinged to the blade 61, and the other end is hinged to the movable plate 62. When the blade 61 moves along the cutting edge 415, it pushes the movable plate 62 to move vertically through the hinge rod 63.

[0044] Reference Figure 3 and Figure 6 Each of the two movable plates 62 has two elastic elements 64 on its opposite side. Each elastic element 64 includes a connecting block 641, a connecting block 642, and a thrust spring 643. One set of elastic elements 64 corresponds to one movable block 41. The connecting block 641 is hinged to the movable plate 62, and the connecting block 642 is hinged to the corresponding movable block 41. The thrust spring 643 is located between movable blocks 411 and 412 and is fixedly connected to both. In the initial state, the thrust spring 643 is perpendicular to the cutting edge 415. At this time, the thrust spring 643 is in a compressed state. All the thrust springs 643 work together to make the two movable plates 62 abut against each other, thereby improving the stability of the movable plates 62.

[0045] Reference Figure 2 and Figure 6The punch 1 is provided with a dividing component 7, which includes a straight rod 71 and an arc-shaped block 72. The straight rod 71 is fixedly connected to the punch 1. When the punch 1 moves, it drives the straight rod 71 to move. The moving block 41 has a through groove 416 adapted to the straight rod 71. When the punch 1 and the die 2 abut, the straight rod 71 is located in the through groove 416. The arc-shaped block 72 is fixedly connected to the end of the straight rod 71 away from the punch 1, and the arc-shaped block 72 is close to the side of the blade 61 away from the casting hole. When the straight rod 71 moves, it drives the arc-shaped block 72 to move, so that the arc-shaped block 72 abuts against the blade 61 and pushes the blade 61 to move along the cutting edge 415 towards the casting hole. When the blade 61 moves, the moving plate 62 is driven by the hinge rod 63 to avoid the blade 61, so that the blade 61 cuts the material bundle in the casting hole, which helps to improve the convenience of dividing the material bundle.

[0046] Reference Figure 3 and Figure 7 The punch 1 is equipped with a linkage component 5 corresponding to the moving block 41. The linkage component 5 includes a connecting rod 51, a pulling column 52, a limiting plate 53, and an elastic element 54. The punch 1 has a moving cavity 11 adapted to the limiting plate 53. The limiting plate 53 is located inside the moving cavity 11 and is slidably connected to the inner wall of the moving cavity 11. One end of the connecting rod 51 passes through the punch 1 and is arranged parallel to the length direction of the moving cavity 11. The connecting rod 51 is fixedly connected to the limiting plate 53, and the end of the connecting rod 51 away from the limiting plate 53 is located outside the punch 1 and is fixed perpendicularly to the pulling column 52. When the limiting plate 53 moves, it drives the pulling column 52 to move through the connecting rod 51.

[0047] Reference Figure 3 and Figure 7 The movable block 41 has a movable groove 413 adapted to the pull column 52. The straight line of the length direction of the movable groove 413 intersects the straight line of the length direction of the guide groove 21. The pull column 52 is located in the movable groove 413 and is slidably connected to the movable block 41 along the length direction of the movable groove 413. The elastic element 54 is located between the limiting plate 53 and the punch 1. Optionally, the elastic element 54 is a spring. One end of the spring is fixedly connected to the limiting plate 53, and the other end is fixedly connected to the punch 1. The spring is always in a compressed state. When the punch 1 and the die 2 (refer to...) Figure 2 When in contact, the elastic element 54 has a tendency to push the limiting plate 53 toward the die cavity 2.

[0048] Reference Figure 6 and Figure 7 When punch 1 moves away from die 2 (reference) Figure 2 When the moving block 41 moves in the direction of the moving cavity 11, the elastic element 54 pushes the limiting plate 53 to move along the length of the moving cavity 11. At this time, the moving block 41 is in a stationary state, and the punch 1 drives the blade 61 to divide the material through the dividing element 7. The punch 1 continues to move, and then drives the arc-shaped block 72 from the through slot 416 (reference) through the straight rod 71. Figure 3 When the elastic element 64 moves out, the moving plate 62 and the blade 61 are reset.

[0049] Reference Figure 5 and Figure 7 After the blade 61 is reset, the limiting plate 53 moves to the moving cavity 11 close to the die 2 (see reference). Figure 2 One end of the die 1 is in contact with the punch 1. At this time, the punch 1 continues to move and drives the connecting rod 51 to move through the limiting plate 53. This causes the connecting rod 51 to drive the moving block 41 to move away from the die 2 through the pulling column 52. When the moving block 41 moves, it causes the material to separate from the product. At the guide block 412 (reference) Figure 3 ) and guide groove 21 (reference) Figure 4 Under the combined action of the two moving blocks 41, the two moving blocks 41 move away from the die 2 (reference) Figure 2 At the same time, they are separated from each other. The pull column 52 is rotatably connected to the rotating tube 521 in the circumferential direction. The rotating tube 521 is located in the moving groove 413 and is rolledly connected to the moving block 41. The rotating tube 521 helps to reduce the wear between the pull column 52 and the moving block 41, thereby extending the service life of the pull column 52 and the moving block 41.

[0050] Reference Figure 2 and Figure 5 Each movable block 41 is equipped with an ejector block 42, which is located within and perpendicular to the feed groove 411. The ejector block 42 is slidably connected to the movable block 41 along its length, and one end of the ejector block 42 within the feed groove 411 is flush with the inner wall of the feed groove 411. The die 2 is equipped with a pusher, which is located on the side of the ejector block 42 away from the feed groove 411. The pusher includes an ejector rod 431, a connecting tube 432, and an elastic element 433. The connecting tube 432 is located at the end of the ejector block 42 away from the feed groove 411, and is slidably connected to the movable block 41 along the length of the ejector block 42. The end of the connecting block near the ejector block 42 has an axially oriented receiving hole 434. The ejector block 42 is fixed with an ejector pin 421, which is inserted into the receiving hole 434 and coaxially arranged with the receiving hole 434.

[0051] Reference Figure 2 and Figure 5 The second elastic element 433 is located within the receiving hole 434. Optionally, the second elastic element 433 is a spring. One end of the spring is fixedly connected to the ejector pin 421, and the other end is fixedly connected to the connecting tube 432. When the spring is in a compressed state, it tends to push the ejector block 42 from the outer circle of the feed groove 411 towards the axis. The ejector rod 431 is located on the side of the connecting tube 432 away from the ejector block 42, and one end of the ejector rod 431 is hinged to the connecting block, and the other end is hinged to the punch 1. In the initial state, the ejector rod 431 is inclined along the length direction of the guide groove 21.

[0052] Reference Figure 2 and Figure 5 When the moving block 41 moves, it drives the ejector block 42 and the connecting pipe 432 to move, which in turn causes the connecting pipe 432 to drive the ejector rod 431 to rotate. The moving block 41 has a clearance groove 414 for avoiding the ejector rod 431. The ejector rod 431 moves along the clearance groove 414 and pushes the connecting pipe 432 towards the ejector block. When the moving pipe moves towards the ejector block 42, it causes the elastic element 433 to compress, which in turn causes the ejector block 42 to move away from the ejector rod 431. The two ejector blocks 42 cooperate to eject the material handle from the feed chute 411, which improves the convenience of removing the material handle from the feed chute 411.

[0053] Reference Figure 2 and Figure 8 The die 2 is equipped with a spring rod 22, which is located on the side of the moving block 41 away from the punch 1 and between the two moving blocks 41. The end of the spring rod 22 away from the cavity is rotatably connected to the die 2. A torsion spring 223 is provided between the spring rod 22 and the die 2. One end of the torsion spring 223 is fixedly connected to the spring rod 22, and the other end is fixedly connected to the die 2. The torsion spring 223 is used to drive the spring rod 22 to swing away from the moving block 41. The punch 1 is fixed with a pull rod 12. When the punch 1 moves, it drives the pull rod 12 to move. The pull rod 12 passes through the die 2 and is slidably connected to the die 2.

[0054] Reference Figure 2 and Figure 8 A spring rod 22 is slidably connected to a pulling block 221 along its length. A rotating column 222 is rotatably connected to one side of the pulling block 221. A pull rod 12 passes through the rotating column 222 and is slidably connected to it. A stop block 121 is fixed at the end of the pull rod 12 away from the punch 1. When the punch 1 moves, the pull rod 12 drives the stop block 121 to move closer to the rotating column 222. When the two moving blocks 41 separate, the stop block 121 abuts against the rotating column 222 and drives the rotating column 222 to move closer to the moving blocks 41. When the rotating column 222 moves, it drives the spring rod 22 to move between the two moving blocks 41 through the pulling block 221. When the spring rod 22 moves, it moves closer to the material handle between the two ejector blocks 42. When the spring rod 22 abuts against the material handle, it pushes the material handle to separate from the ejector blocks 42, thereby pushing the material handle out from between the two ejector blocks 42, completing the separation of the material handle. During the demolding process, the material bundle is divided by the movement of the punch 1, which helps to reduce the time spent removing the material bundle separately, thereby improving the processing efficiency of the product.

[0055] The implementation principle of the automatic material cutting device for tunnel gates in this application embodiment is as follows: the driving component 3 drives the punch 1 to separate from the die 2. When the punch 1 moves, the dividing component 7 drives the blade 61 to divide the material bundle, so that the material bundle is separated from the product. When the punch 1 continues to move, the linkage component 5 drives the two moving blocks 41 to move along the corresponding guide grooves 21 respectively. When the moving blocks 41 move, the ejector block 42 drives the material bundle to disengage from the feed groove 411. When the moving blocks 41 move, the punch 1 moves towards the material bundle along the gap between the two moving blocks 41 through the pull rod 12, and then the spring rod 22 separates the material bundle from the ejector block 42, thereby completing the separation of the material bundle from the product. When removing the material bundle, the separation of the material bundle from the product is achieved during the product demolding process, which helps to reduce the time spent on the additional separation of the material bundle, thereby improving the production efficiency of the product.

[0056] The above are all preferred embodiments of this application, and are not intended to limit the scope of protection of this application. Therefore, all equivalent changes made in accordance with the structure, shape and principle of this application should be covered within the scope of protection of this application.

Claims

1. An automatic cutting device for tunnel gates, comprising a die (2) and a punch (1), the die (2) having a cavity for producing a product, and the die (2) being fixedly provided with a drive (3) for pushing the punch (1) to open the mold, characterized in that: The die cavity (2) is provided with several sets of cutting components, each including two sets of moving blocks (41). Each moving block (41) has a feeding groove (411). The two feeding grooves (411) cooperate to form a casting hole. The diameter of the feeding groove (411) gradually decreases along its own axis towards the cavity. A linkage assembly (5) is provided between the die cavity (2) and the punch (1). When the punch (1) is demolded from the die cavity (2), the punch (1) drives the two moving blocks (41) away from the die cavity (2) through the linkage assembly (5). 2) The two moving blocks (41) are fixed with guide blocks (412) on the side away from each other. The die (2) is provided with guide grooves (21) for limiting the guide blocks (412). When the guide blocks (412) move along the guide grooves (21), they drive the two moving blocks (41) to separate. The moving blocks (41) are slidably connected with ejector blocks (42). The moving blocks (41) are located in the feed groove (411). When the two moving blocks (41) collide with each other, the ejector blocks (42) are located in the feed groove. One end of the groove (411) is flush with the inner wall of the casting hole. A pusher is provided between the ejector block (42) and the die (2). When the moving block (41) moves along the guide groove (21), the pusher is used to drive the two ejector blocks (42) to move closer to each other. The linkage assembly (5) includes a connecting rod (51), a pulling column (52), a limiting plate (53), and an elastic element (54). The punch (1) has a moving cavity (11) that matches the limiting plate (53). The end of the connecting rod (51) away from the die (2) A punch (1) is inserted and positioned in the moving cavity (11). A limiting plate (53) is fixedly connected to a connecting rod (51). An elastic element (54) is located between the limiting plate (53) and the punch (1) to push the limiting plate (53) closer to the die (2). A pulling column (52) is vertically arranged with the connecting rod (51). A moving block (41) has a moving groove (413) adapted to the pulling column (52). The pulling column (52) is located in the moving groove (413) and abuts against the moving block (41).Each of the movable blocks (41) is equipped with a blade (61). Each movable block (41) has a cutting edge (415) communicating with the material feed chute (411). The cutting edge (415) is located at the end of the material feed chute (411) near the cavity. When the blade (61) moves along the cutting edge (415), it is in the same direction as the diameter of the casting hole. Two sets of movable plates (62) are slidably connected between the two movable blocks (41). The sliding direction of the movable plates (62) is perpendicular to the moving direction of the blade (61). The blade (61) is located between the two movable plates (62). A hinge rod (63) is provided between the blade (61) and the two movable plates (62). One end of the hinge rod (63) is hinged to the blade (61), and the other end is hinged to the corresponding movable plate (62). An opening (621) communicating with the pouring hole is provided on the side of the two movable plates (62) that is close to each other. An elastic element three (64) is provided on the side of the movable plate (62) that is away from the pouring hole. The elastic element three (64) is used to push the two movable plates (62) closer to each other. The punch (1) is provided with a dividing element (7) for driving the two blades (61) closer to each other.

2. The automatic material cutting device for tunnel-type gating according to claim 1, characterized in that: The pull column (52) is fitted with a rotating tube (521), which rotates coaxially with the pull column (52). The rotating tube (521) is located in the moving groove (413) and is tumbledly connected to the moving part.

3. The automatic material cutting device for tunnel-type gating according to claim 1, characterized in that: The pushing component includes a push rod (431), a connecting pipe (432), and an elastic element two (433). The connecting pipe (432) is located at the end of the ejector block (42) away from the feed chute (411). A receiving hole (434) is opened at the end of the connecting block near the ejector block (42). A push column (421) is fixedly connected to the ejector block (42). The push column (421) is inserted into the receiving hole (434) and extends axially along the receiving hole (434). The elastic element two (433) Located inside the receiving hole (434), it is used to drive the ejector block (42) to move away from the connecting pipe (432). The ejector rod (431) is located at the end of the connecting pipe (432) away from the ejector block (42), and one end of the ejector rod (431) is hinged to the connecting pipe (432), and the other end is hinged to the die (2). The ejector rod (431) is inclined along the guide groove (21). The moving block (41) has a relief groove (414) adapted to the ejector rod (431).

4. The automatic material cutting device for tunnel-type gating according to claim 1, characterized in that: The dividing component (7) includes a straight rod (71) and an arc-shaped block (72). The moving block (41) has a through groove (416) communicating with the cutting edge (415). The straight rod (71) is slidably connected to the moving block (41) along the length of the through groove (416). The end of the straight rod (71) away from the die (2) is fixedly connected to the punch (1). The arc-shaped block (72) is located in the through groove (416) and is fixedly connected to the straight rod (71). When the arc-shaped block (72) abuts against the blade (61), it pushes the blade (61) to move along the cutting edge (415) toward the casting hole.

5. The automatic material cutting device for tunnel-type gating according to claim 1, characterized in that: The elastic element three (64) includes a connecting block one (641), a connecting block two (642) and a thrust spring (643). The connecting block one (641) is hinged to the end of the moving plate (62) away from the opening (621). The connecting block two (642) is hinged to the moving block (41). The thrust spring (643) is located between the connecting block one (641) and the connecting block two (642), and the thrust spring (643) is fixedly connected to both the connecting block one (641) and the connecting block two (642).

6. The automatic material cutting device for tunnel-type gating according to claim 1, characterized in that: The die (2) is provided with a spring rod (22), which is located on the side of the moving block (41) away from the punch (1) and between the two moving blocks (41). The end of the spring rod (22) away from the cavity is hinged to the die (2). The spring rod (22) is slidably connected to a pulling block (221) along its length. The punch (1) is fixedly connected to a pull rod (12) that is adapted to the spring rod (22). The pulling block (221) is rotatably connected to a rotating column (222) that is adapted to the pull rod (12). The pull rod (12) passes through the rotating column (222) and is fixedly connected to a stop block (121). A torsion spring (223) is provided at the connection between the spring rod (22) and the die (2). The torsion spring (223) is used to drive the spring rod (22) to move closer to the die (2).

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