A plastic laundry basket injection molding mold lets the demolding mechanism into place

Abstract

The utility model relates to a kind of plastic laundry basket injection molding mold let-stand demolding forming mechanism, including fixed plate, fixed mold plate, fixed mold plate is equipped with installation cavity, multiple blocks for forming basket body are equipped with in installation cavity, multiple blocks for forming column for forming perforation are equipped with on forming block, multiple blocks of forming block are enclosed and form the cavity for forming basket body;Multiple T-shaped inclined grooves are opened in the side wall of installation cavity, multiple blocks of forming block are equipped with sliding block, multiple blocks of sliding block are respectively slidably arranged in multiple inclined grooves;Fixed mold plate is equipped with multiple guide columns, multiple guide columns are slidably provided with top plate on;Fixed mold plate is equipped with the driving assembly for driving top plate movement;Multiple blocks of forming block adjacent side wall are all equipped with cooperation groove, multiple blocks of top block are equipped on top plate, multiple blocks of top block are inserted into multiple cooperation grooves, and multiple blocks of top block are slidably cooperated with multiple cooperation grooves. The utility model lets-stand by the side of forming block sliding, simultaneously releases the reverse structure between forming column and basket body by basket body being pushed out upper mould body.

Description

Technical Field

[0001] This utility model relates to the field of molds, and in particular to a clearance and demolding mechanism for injection molding of plastic laundry baskets. Background Technology

[0002] A type of plastic laundry basket, such as Figure 1 As shown, it includes a basket 7, and the basket 7 has multiple perforations 71.

[0003] The basket 7 is injection molded using a mold. The forming post 23 used to form the perforation 71 in the mold will form an undercut structure with the basket 7, which will hinder the demolding of the basket 7 after the mold is opened. Therefore, a demolding structure needs to be designed to ensure that the perforation 71 is formed while the undercut structure between the forming post 23 and the basket 7 can be released after the basket 7 is formed. Utility Model Content

[0004] This application provides a plastic laundry basket injection molding die clearance and demolding mechanism, which, through the side sliding clearance of the molding block, pushes the basket out of the upper mold body while releasing the undercut structure between the molding column and the basket body.

[0005] The technical solution provided in this application for a plastic laundry basket injection molding die clearance and demolding mechanism is as follows: A plastic laundry basket injection molding die clearance and demolding mechanism includes a fixed plate and a fixed template. The fixed template has an installation cavity, and the installation cavity has multiple molding blocks for molding the basket body. The molding blocks have multiple molding columns for molding perforations. The multiple molding blocks together form a cavity for molding the basket body. The sidewall of the mounting cavity is provided with multiple T-shaped inclined grooves, and each of the multiple forming blocks is provided with a slider, which is slidably disposed in the multiple inclined grooves respectively; the fixed template is provided with multiple guide posts, and a top plate is slidably disposed on the multiple guide posts; the fixed template is provided with a drive assembly for driving the top plate to move. Each of the multiple molded blocks has a mating groove on its adjacent sidewall. The top plate has multiple top blocks that extend into multiple mating grooves and slide in contact with the multiple mating grooves.

[0006] By adopting the above technical solution, the top plate moves away from the fixed template. During this process, multiple top blocks drive multiple forming blocks to move out of the mounting cavity together. When the multiple forming blocks move out of the mounting cavity, multiple forming pillars push the formed basket out of the mounting cavity together, completing the demolding of the basket. Due to the limitations of the inclined groove and the slider, the direction of movement of the multiple forming blocks is oblique, that is, the multiple forming blocks move away from the basket, ultimately causing the multiple forming pillars to move away from multiple perforations, thereby releasing the undercut structure between the forming pillars and the basket, allowing the basket to be removed from the mold.

[0007] Preferably, the top plate is detachably connected to multiple mounting blocks, with two adjacent top blocks integrally formed on the same mounting block and located on opposite sides of the mounting block.

[0008] By adopting the above technical solution and using the sliding and detachable mounting block design, the maintenance and disassembly difficulty of the top block and molding block is reduced.

[0009] Preferably, the top plate is provided with multiple sliding grooves, and the multiple mounting blocks are respectively slidably disposed in the multiple sliding grooves; the mounting blocks slide along the sliding grooves, thereby causing the top block on them to disengage from the mating groove; the fixed template is also provided with multiple sets of limiting components, which are used to restrict the sliding of the mounting blocks.

[0010] By adopting the above technical solution, when disconnecting the top block from the mating groove, the restriction of the limiting component on the mounting block is released, and then the mounting block is slid to allow the top block to slide out of the mating block.

[0011] Preferably, the limiting component includes multiple bolts and multiple first threaded holes formed in the slide groove. The bolts pass through the mounting block and are connected to the first threaded holes, thereby limiting the sliding of the mounting block.

[0012] By adopting the above technical solution, it is convenient to restrict the installation of blocks.

[0013] Preferably, the mounting block has a second threaded hole for connecting with an external tool to assist in sliding the mounting block.

[0014] By adopting the above technical solution, the external tool is a lifting ring. When disassembling the mounting block slider, the external tool can be threaded into the second threaded hole, and then the mounting block can be slid by pulling the external tool. At the same time, this structure allows the mounting block to be hoisted by attaching a lifting rope to the external tool when it is installed into the slide groove, which facilitates the assembly of the mounting block.

[0015] Preferably, the drive assembly includes four hydraulic cylinders, which are symmetrically arranged on the fixed template, and the telescopic shafts of the four hydraulic cylinders are all connected to the top plate.

[0016] By adopting the above technical solution, the sliding of the top plate is controlled by the extension and retraction of the hydraulic cylinder's telescopic shaft.

[0017] Preferably, the fixed template is provided with an extension oil passage and a retraction oil passage, and the two working oil ports of the four oil cylinders are respectively connected to the extension oil passage and the retraction oil passage through oil pipes.

[0018] By adopting the above technical solution, the synchronous action of the four hydraulic cylinders is achieved, improving the stability of the top plate sliding. At the same time, this structure allows for the use of only one hydraulic system during the injection molding production of a single basket, eliminating the need for a separate hydraulic system for each cylinder and reducing injection molding costs.

[0019] The main technical effects of this utility model are reflected in the following aspects: 1. This utility model uses the movement of the top plate to drive multiple forming blocks to move together. While pushing the basket out of the fixed template, it releases the inverted structure of multiple forming columns and perforations, so that the basket can be demolded smoothly. 2. By setting the top block on the mounting block, this utility model makes it very simple to disengage the top block from the mating groove, thus reducing the difficulty of disassembling and assembling the top block and multiple molding blocks. 3. This utility model sets up an oil inlet channel and an oil outlet channel on the fixed template to realize synchronous control of four oil cylinders, improve the stability of the top plate sliding, and reduce the injection molding production cost of the basket. Attached Figure Description

[0020] Figure 1 This is a schematic diagram of the basket's structure.

[0021] Figure 2 This is a schematic diagram of the mold structure.

[0022] Figure 3 This is a structural diagram of the mold from another angle.

[0023] Figure 4 This is a schematic diagram of the fixed template and the four hydraulic cylinders.

[0024] Figure 5 It is a structural diagram of components such as the top plate, molding block, and mounting block.

[0025] Figure 6 yes Figure 4 A cross-sectional view of the middle component along line AA.

[0026] Figure 7 yes Figure 4 A cross-sectional view of the middle component along line BB.

[0027] Figure 8 This is a schematic diagram of the molded block.

[0028] Figure 9 This is a structural diagram of the mounting block and the two top blocks.

[0029] Reference numerals: 11. Fixing plate; 12. Hot runner plate; 2. Fixed template; 21. Mounting cavity; 22. Molding block; 221. Mating groove; 23. Molding column; 24. Cavity; 25. Inclined groove; 26. Slider; 27. Guide column; 28. Top block; 29. ​​Extending oil passage; 30. Retracting oil passage; 3. Top plate; 31. Slide groove; 4. Drive assembly; 41. Hydraulic cylinder; 5. Mounting block; 51. Second threaded hole; 6. Limiting assembly; 61. Bolt; 62. First threaded hole; 7. Basket; 71. Perforation. Detailed Implementation

[0030] The present application will be further described in detail below with reference to the accompanying drawings, so that the technical solution of the present application can be more easily understood and mastered.

[0031] Reference Figures 2-5 This embodiment of a plastic laundry basket injection molding die clearance and demolding mechanism includes a fixed plate 11 and a fixed template 2. The fixed template 2 has an installation cavity 21, and multiple T-shaped inclined grooves 25 are formed on the side wall of the installation cavity 21. Multiple molding blocks 22 for molding the basket body 7 are provided inside the installation cavity 21. Multiple molding posts 23 for molding perforations 71 are provided on each molding block 22. The multiple molding blocks 22 together form a cavity 24 for molding the basket body 7. Each molding block 22 is provided with a slider 26, and the sliders 26 are slidably disposed within the multiple inclined grooves 25.

[0032] Reference Figure 2 and Figure 3 The fixed template 2 has guide posts 27 at each of its four corners, and a top plate 3 is slidably mounted on the four guide posts 27. The fixed template 2 is equipped with a drive assembly 4 for driving the top plate 3 to move. The drive assembly 4 includes four hydraulic cylinders 41, which are symmetrically arranged on the fixed template 2, and the telescopic shafts of the four hydraulic cylinders 41 are all connected to the top plate 3.

[0033] Reference Figure 2 , Figure 4 , Figure 6 and Figure 7 The fixed template 2 is provided with an extension oil passage 29 and a retraction oil passage 30. The two oil ports on each cylinder 41 are connected to the extension oil passage 29 and the retraction oil passage 30 respectively through oil pipes. The extension oil passage 29 and the retraction oil passage 30 are connected to an external hydraulic pump station.

[0034] Reference Figure 2 , Figure 4 , Figure 6 and Figure 7 When the hydraulic pump station presses hydraulic oil into the extended oil passage 29, the telescopic shafts of the four cylinders 41 extend, driving the top plate 3 to slide away from the fixed template 2. When the hydraulic pump station presses hydraulic oil into the retractable oil passage 30, the telescopic shafts of the four cylinders 41 retract, driving the top plate 3 to move and reset.

[0035] Reference Figure 1 , Figure 5 , Figure 8 and Figure 9 The top plate 3 has multiple sliding grooves 31, and mounting blocks 5 are slidably installed in each of the multiple sliding grooves 31. The mounting blocks 5 and the multiple forming blocks 22 are distributed alternately. The fixed template 2 is also provided with multiple sets of limiting components 6, which are used to limit the sliding of the mounting blocks 5. The limiting components 6 include multiple bolts 61 and multiple first threaded holes 62 opened in the sliding grooves 31. The bolts 61 pass through the mounting blocks 5 and are connected to the first threaded holes 62, thereby limiting the sliding of the mounting blocks 5.

[0036] Reference Figure 5 and Figure 9 The mounting block 5 has a second threaded hole 51 for connecting to an external tool to assist in sliding the mounting block 5. The external tool is a lifting ring. When disassembling the mounting block 5 and the slider 26, the external tool can be threaded into the second threaded hole 51, and then the mounting block 5 can be slid by pulling the external tool. At the same time, this structure allows the mounting block 5 to be hoisted by attaching a lifting rope to the external tool when it is installed into the slide groove 31, facilitating the assembly of the mounting block 5.

[0037] Reference Figure 1 , Figure 5 , Figure 8 and Figure 9 Two top blocks 28 are integrally formed on both sides of the mounting block 5. Each side wall of the molding block 22 has a mating groove 221, into which the top blocks 28 extend and slide. After the basket body 7 is injection molded and the mold opens, the telescopic shafts of the four hydraulic cylinders 41 extend, driving the top plate 3 to move away from the fixed template 2. During this process, multiple top blocks 28 drive multiple molding blocks 22 to move out of the mounting cavity 21 together. As the multiple molding blocks 22 move out of the mounting cavity 21, multiple molding pillars 23 push the molded basket body 7 out of the mounting cavity 21 together, completing the demolding of the basket body 7.

[0038] Meanwhile, due to the constraints of the inclined groove 25 and the slider 26, the direction of movement of the multiple forming blocks 22 is oblique, that is, the multiple forming blocks 22 will move away from the basket 7, causing the multiple forming pillars 23 to move away from the multiple through holes 71, thereby releasing the inverted structure between the forming pillars 23 and the basket 7, so that the basket 7 can be taken out of the mold.

[0039] Of course, the above are just typical examples of this application. In addition, this application may have many other specific implementation methods. All technical solutions formed by equivalent substitution or equivalent transformation fall within the scope of protection claimed in this application.

Claims

1. A demolding mechanism for injection molding of a plastic laundry basket, comprising a fixed plate (11), a hot runner plate (12), and a fixed template (2), characterized in that: The fixed template (2) is provided with an installation cavity (21), and the installation cavity (21) is provided with multiple molding blocks (22) for molding the basket (7). The molding blocks (22) are provided with multiple molding columns (23) for molding the perforations (71). The multiple molding blocks (22) together form a cavity (24) for molding the basket (7). The mounting cavity (21) has multiple T-shaped inclined grooves (25) on its side wall. Each of the multiple forming blocks (22) is provided with a slider (26), and the sliders (26) are slidably disposed in the multiple inclined grooves (25). The fixed template (2) is provided with multiple guide posts (27), and a top plate (3) is slidably disposed on the multiple guide posts (27). The fixed template (2) is provided with a driving assembly (4) for driving the top plate (3) to move. Each of the multiple molding blocks (22) has a mating groove (221) on its adjacent sidewalls. The top plate (3) has multiple top blocks (28), which extend into the multiple mating grooves (221) and slide in contact with the multiple mating grooves (221).

2. The plastic laundry basket injection molding die clearance and demolding mechanism according to claim 1, characterized in that: Multiple mounting blocks (5) are detachably connected to the top plate (3). Two adjacent top blocks (28) are integrally formed on the same mounting block (5) and are located on both sides of the mounting block (5).

3. The plastic laundry basket injection molding die clearance and demolding mechanism according to claim 2, characterized in that: The top plate (3) is provided with multiple sliding grooves (31), and multiple mounting blocks (5) are respectively slidably disposed in the multiple sliding grooves (31); the mounting block (5) slides along the sliding groove (31) thereby causing the top block (28) on it to disengage from the mating groove (221); the fixed template (2) is also provided with multiple sets of limiting components (6), and the limiting components (6) are used to restrict the sliding of the mounting block (5).

4. The plastic laundry basket injection molding die clearance and demolding mechanism according to claim 3, characterized in that: The limiting component (6) includes multiple bolts (61) and multiple first threaded holes (62) opened in the slide groove (31). The bolts (61) pass through the mounting block (5) and are connected to the first threaded holes (62), thereby limiting the sliding of the mounting block (5).

5. The plastic laundry basket injection molding die clearance and demolding mechanism according to claim 3, characterized in that: The mounting block (5) is provided with a second threaded hole (51), which is used to connect with an external tool to assist in sliding the mounting block (5).

6. The plastic laundry basket injection molding die clearance and demolding mechanism according to claim 1, characterized in that: The drive assembly (4) includes four hydraulic cylinders (41), which are symmetrically arranged on the fixed template (2). The telescopic shafts of the four hydraulic cylinders (41) are all connected to the top plate (3).

7. The plastic laundry basket injection molding die clearance and demolding mechanism according to claim 6, characterized in that: The fixed template (2) is provided with an extension oil passage (29) and a retraction oil passage (30). The two working oil ports of the four oil cylinders (41) are respectively connected to the extension oil passage (29) and the retraction oil passage (30) through oil pipes.

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