Runner-adjustable extrusion die

Abstract

The utility model relates to a runner adjusting type extrusion die, which comprises a die body, a mounting plate, a die cavity and a runner, an adjusting assembly is arranged on the inner side of the runner, the adjusting assembly comprises an open groove arranged on the inner wall of the runner, the inner wall of the open groove is provided with a flow intercepting block, the inner bottom wall of the open groove is provided with a mounting groove for mounting the adjusting assembly, and the flow intercepting block is arranged in the mounting groove. And a first rack extending into the mounting groove is fixedly mounted at the bottom of the closure block, a gear meshed with the first rack is further rotationally mounted on the inner wall of the mounting groove, and a fixing groove communicating with the mounting groove is further formed in the surface of the mold body. According to the flow channel adjusting type extrusion die, the size of the flow intercepting face of the flow channel can be adjusted by adjusting the position of the flow intercepting block, then the flow speed of melt is controlled, the pulling block is not prone to automatically moving due to the arrangement of the anti-skid sleeve, the stability of the flow intercepting block is improved, operation is easy and convenient, no tool is needed, and cost is low. And the convenience of adjusting the section of the runner is greatly improved.

Description

Technical Field

[0001] The utility model relates to the technical field of die runner adjustment, in particular to a runner-adjustable extrusion die. Background Technique

[0002] The runner-adjustable extrusion die realizes the control of the material flow speed and pressure by adjusting the runner structure inside the die, thereby optimizing the extrusion molding process. This kind of die usually has an adjustable runner design, such as a secondary runner with a variable pipe diameter, an adjustable runner cross-section, etc., to adapt to the flow characteristics and molding requirements of different materials.

[0003] In the prior art, when adjusting the runner cross-section, most of the time, bolts are locked into the runner, so that the cross-sectional area of the molten material passing through the die runner can be changed, and then the flow speed of the molten material can be controlled. However, this method requires tools to adjust the position of the bolts during use. At the same time, if some molten material solidifies at the wrench hole of the bolt, the staff needs to clean the molten material at the bolt wrench hole before adjusting, and the operation process is relatively cumbersome and not simple and convenient. Therefore, we propose a runner-adjustable extrusion die to solve the above problems. Content of the Utility Model

[0004] Aiming at the deficiencies of the prior art, the utility model provides a runner-adjustable extrusion die, which has the effect of being convenient to adjust the runner cross-sectional area and simple and convenient to operate.

[0005] To achieve the above purpose, the utility model provides the following technical scheme: A runner-adjustable extrusion die, including a die body, a mounting plate, a die cavity and a runner. An adjusting component is arranged inside the runner. The adjusting component includes a slot opened on the inner wall of the runner. A shut-off block is arranged on the inner wall of the slot. An installation slot for installing the adjusting component is opened on the inner bottom wall of the slot. A first rack extending into the installation slot is fixedly installed at the bottom of the shut-off block. A gear meshing with the first rack is also rotatably installed on the inner wall of the installation slot. A fixing slot communicated with the installation slot is also opened on the surface of the die body. An anti-slip sleeve is fixedly installed on the inner wall of the fixing slot. A movable block is slidably installed on the inner wall of the anti-slip sleeve. A second rack meshing with the gear is fixedly installed at the bottom of the movable block. A pull block is fixedly installed at the top of the movable block.

[0006] Further, the pull block is located inside the fixing slot, and the second rack is also located inside the installation slot.

[0007] Further, the upper surface of the shut-off block is arc-shaped and adapted to the runner, and the pull block is located inside the fixing slot.

[0008] Further, a limit block is also fixedly installed at the bottom of the first rack, and the limit block is slidably connected with the inner wall of the installation slot.

[0009] Further, a sealing gasket adapted to the flow channel is fixedly installed on the inner wall of the slotted opening, and the intercepting block is slidably connected to the inner wall of the sealing gasket.

[0010] Further, connecting blocks are fixedly installed on both sides of the mold body, the connecting blocks are fixed to the mounting plate by bolts, and the mold body is fixedly installed on the top of the mounting plate through the connecting blocks and bolts.

[0011] Further, an installation opening is formed at the bottom of the mold body, an electric push rod located inside the installation opening is fixedly installed on the top of the mounting plate, a push plate is fixedly installed at the output end of the electric push rod, and a driving rod is fixedly installed on the top of the push plate.

[0012] Further, a push template is installed on the inner bottom wall of the mold cavity, the push template is embedded in the inner bottom wall of the mold cavity, and the bottom of the push template is fixed to the top of the driving rod.

[0013] Compared with the prior art, the present utility model provides a flow channel adjustable extrusion mold, which has the following beneficial effects:

[0014] 1. For this flow channel adjustable extrusion mold, by pressing or pulling the position of the pull block, the position of the second rack can be adjusted. When the second rack moves, the first rack will move through the gear, so that the position of the intercepting block can be adjusted. By adjusting the position of the intercepting block, the cross-sectional area of the flow channel can be adjusted, thereby controlling the flow rate of the molten material. The setting of the anti-slip sleeve makes it difficult for the pull block to move automatically, improving the stability of the intercepting block. The operation is simple and convenient, and no tools are required, greatly improving the convenience of adjusting the cross-section of the flow channel.

[0015] 2. For this flow channel adjustable extrusion mold, by starting the electric push rod to drive the push plate to move, the push template is driven to move through the driving rod. The push template can help the forming mold to demold, thereby improving the demolding efficiency of the mold. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 is the front view of the present utility model;

[0017] Figure 2 is the present utility model Figure 1 the enlarged view at A in;

[0018] Figure 3 is the sectional view of the mold body of the present utility model;

[0019] Figure 4 is the schematic diagram of the adjusting assembly of the present utility model;

[0020] Figure 5Schematic diagram of the electric push rod, push plate, drive rod and push template of the present utility model.

[0021] In the figure: 1, mold body; 2, mounting plate; 3, runner; 4, slot; 5, flow intercepting block; 6, first rack; 7, push template; 8, drive rod; 9, limit block; 10, gear; 11, second rack; 12, movable block; 13, anti-slip sleeve; 14, pulling block; 15, fixing groove; 16, mounting groove; 17, sealing gasket; 18, mold cavity; 19, mounting opening; 20, electric push rod; 21, push plate; 22, connecting block. Specific embodiments

[0022] Next, the technical solutions in the embodiments of the present utility model will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present utility model. All other embodiments obtained by those of ordinary skill in the art based on the embodiments of the present utility model without creative efforts shall fall within the protection scope of the present utility model.

[0023] Please refer to Figure 1 , a runner-adjustable extrusion mold, comprising a mold body 1, a mounting plate 2, a mold cavity 18 and a runner 3.

[0024] Among them, the runner 3 and the mold cavity 18 are both opened on the surface of the mold body 1, and the mounting plate 2 is located at the bottom of the mold body 1.

[0025] Please refer to Figure 2 , Figure 3 and Figure 4 , an adjusting assembly is provided inside the flow path 3. The adjusting assembly includes a slot 4 opened on the inner wall of the flow path 3. A flow intercepting block 5 is provided on the inner wall of the slot 4. An installation groove 16 for installing the adjusting assembly is opened on the inner bottom wall of the slot 4. A first rack 6 extending into the interior of the installation groove 16 is fixedly installed at the bottom of the flow intercepting block 5. A gear 10 meshing with the first rack 6 is rotatably installed on the inner wall of the installation groove 16. A fixing groove 15 communicating with the installation groove 16 is further opened on the surface of the mold body 1. An anti-slip sleeve 13 is fixedly installed on the inner wall of the fixing groove 15. A movable block 12 is slidably installed on the inner wall of the anti-slip sleeve 13. A second rack 11 meshing with the gear 10 is fixedly installed at the bottom of the movable block 12. A pulling block 14 is fixedly installed at the top of the movable block 12.

[0026] Among them, when it is necessary to adjust the cross-section of the runner 3, press down the pulling block 14 to make the second rack 11 move downward. When the second rack 11 moves, it will drive the gear 10 to rotate, and then make the first rack 6 move upward, thereby making the flow intercepting block 5 move upward, and then the cross-section size of the runner 3 can be adjusted. The operation is simple and convenient, and no tools are required, which greatly improves the convenience of adjusting the cross-section of the runner 3.

[0027] In addition, the pull block 14 is located inside the fixing groove 15 , the second rack 11 is also located inside the mounting groove 16 , the upper surface of the intercepting block 5 is an arc-shaped setting adapted to the flow channel 3 , and the pull block 14 is located inside the fixing groove 15 .

[0028] When the intercepting block 5 moves downward, the arc-shaped setting of the top portion matched with the flow channel 3 makes it difficult to affect the flow of the molten material after it is reset.

[0029] See also Figure 2 and Figure 4 In this embodiment, a limit block 9 is fixedly installed at the bottom of the first rack 6, and the limit block 9 is slidably connected to the inner wall of the mounting groove 16. A sealing gasket 17 adapted to the flow channel 3 is also fixedly installed on the inner wall of the slot 4, and the intercepting block 5 is slidably connected to the inner wall of the sealing gasket 17.

[0030] Among them, by setting the limit block 9, the limit block 9 will contact the gear 10 after moving upward for a distance, so as to achieve the effect of limiting the first rack 6, thereby making it difficult for the intercepting block 5 to separate from the flow channel 3.

[0031] In addition, the sealing gasket 17 is provided to improve the sealing performance of the connection between the interception block 5 and the flow channel 3.

[0032] See also Figure 5 In this embodiment, connecting blocks 22 are fixedly installed on both sides of the mold body 1, and the connecting blocks 22 are fixed to the mounting plate 2 by bolts. The mold body 1 is fixedly installed on the top of the mounting plate 2 by the connecting blocks 22 and the bolts.

[0033] The connection block 22 and the bolts are provided to facilitate assembly and disassembly of the mold body 1 .

[0034] In this embodiment, a mounting opening 19 is opened at the bottom of the mold body 1, and an electric push rod 20 located inside the mounting opening 19 is fixedly installed on the top of the mounting plate 2. A push plate 21 is fixedly installed on the output end of the electric push rod 20, and a driving rod 8 is fixedly installed on the top of the push plate 21. A push plate 7 is installed on the inner bottom wall of the mold cavity 18. The push plate 7 is embedded in the inner bottom wall of the mold cavity 18, and the bottom of the push plate 7 is fixed to the top of the driving rod 8.

[0035] Among them, starting the electric push rod 20 drives the push plate 21 to move upward, thereby the push plate 7 is moved upward through the driving rod 8. The push plate 7 can help the molding mold to be demoulded, thereby improving the demoulding efficiency of the mold.

[0036] In the use of this embodiment, when it is necessary to adjust the cross-section of the flow channel 3, press the pull block 14 downward to make the second rack 11 move downward. When the second rack 11 moves, it will drive the gear 10 to rotate, and then make the first rack 6 move upward. Thus, the flow-block 5 can be moved upward, and then the cross-sectional size of the flow channel 3 can be adjusted. On the contrary, when the flow-block 5 moves downward, the arc-shaped setting that fits the top with the flow channel 3 makes it not easily affect the flow of the molten material after resetting. The operation is simple and convenient, and no tools are required, which greatly improves the convenience of adjusting the cross-section of the flow channel 3.

[0037] After the material is formed, start the electric push rod 20 to drive the push plate 21 to move upward, so that the push template 7 is driven to move upward through the drive rod 8. The push template 7 can help the forming die to demold, thus improving the demolding efficiency of the die.

[0038] All the electrical components mentioned in the text are electrically connected to the main controller and the power supply. The main controller can be a conventional known device such as a computer for control, and the existing publicly disclosed electrical connection technology will not be elaborated in the text.

[0039] The above are only the embodiments of the present invention and are not used to limit the present invention. For those skilled in the art, the present invention can have various changes and modifications. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principle of the present invention shall be included within the scope of the claims of the present invention.

Claims

1. A flow channel adjustment extrusion die, comprising a die body (1), a mounting plate (2), a die cavity (18) and a flow channel (3), characterized in that: An adjusting component is provided on the inner side of the flow channel (3); The regulating component comprises a slot (4) formed on the inner wall of the flow channel (3); a cut-off block (5) is provided on the inner wall of the slot (4); a mounting slot (16) for mounting the regulating component is provided on the inner bottom wall of the slot (4); a first rack (6) extending into the mounting slot (16) is fixedly mounted on the bottom of the cut-off block (5); a gear (10) meshing with the first rack (6) is rotatably mounted on the inner wall of the mounting slot (16); a fixed slot (15) connected to the mounting slot (16) is also formed on the surface of the mold body (1); an anti-slip sleeve (13) is fixedly mounted on the inner wall of the fixed slot (15); a movable block (12) is slidably mounted on the inner wall of the anti-slip sleeve (13); a second rack (11) meshing with the gear (10) is fixedly mounted on the bottom of the movable block (12); and a pull block (14) is fixedly mounted on the top of the movable block (12).

2. The flow channel adjustment extrusion die according to claim 1, characterized in that: The pulling block (14) is located inside the fixing groove (15), and the second rack (11) is also located inside the mounting groove (16).

3. The flow channel adjustable extrusion die according to claim 1, characterized in that: The upper surface of the intercepting block (5) is arranged in an arc shape to match the flow channel (3), and the pulling block (14) is located inside the fixing groove (15).

4. The flow channel adjustable extrusion die according to claim 1, characterized in that: A limit block (9) is also fixedly mounted on the bottom of the first rack (6), and the limit block (9) is slidably connected to the inner wall of the mounting groove (16).

5. The flow channel adjustable extrusion die according to claim 1, characterized in that: A sealing gasket (17) adapted to the flow channel (3) is also fixedly mounted on the inner wall of the slot (4), and the intercepting block (5) is slidably connected to the inner wall of the sealing gasket (17).

6. The flow channel adjustable extrusion die according to claim 1, characterized in that: Connecting blocks (22) are fixedly mounted on both sides of the mold body (1); the connecting blocks (22) are fixed to the mounting plate (2) via bolts; and the mold body (1) is fixedly mounted on the top of the mounting plate (2) via the connecting blocks (22) and the bolts.

7. The flow channel adjustable extrusion die according to claim 1, characterized in that: The bottom of the mold body (1) is provided with a mounting opening (19), the top of the mounting plate (2) is fixedly mounted with an electric push rod (20) located inside the mounting opening (19), the output end of the electric push rod (20) is fixedly mounted with a push plate (21), and the top of the push plate (21) is fixedly mounted with a driving rod (8).

8. The flow channel adjustable extrusion die according to claim 7, characterized in that: The inner bottom wall of the mold cavity (18) is installed with a push plate (7), which is embedded in the inner bottom wall of the mold cavity (18), and the bottom of the push plate (7) is fixed to the top of the driving rod (8).

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