A modular injection mold with quick mold change

Abstract

The utility model relates to injection molding equipment technical field discloses a modularization injection mold of quick die change, including work bench, quick replacement mechanism, ejection mechanism, lower mould and upper mould, the lower mould is equipped with in the work bench inner wall right side, the upper mould is equipped with in the work bench inner wall left side cooperation, the lower mould is connected with the work bench through the slide rail and the sliding block of being opened in the work bench, the lower mould outer wall is equipped with the slot for the sliding block insertion, the sliding block is locked through the lock block of falling under gravity on the top, one side of upper mould is equipped with the ejection mechanism. The utility model solves the problem that the existing injection mold is complex in the fixing structure in the replacement process, and the dismounting tool is tedious and the time -consuming is longer, reaches the positioning and locking of lower mould can be quickly completed without the help of additional tools just using gravity self -locking principle, significantly shortens the die change downtime, improves the effect of production efficiency.

Description

Technical Field

[0001] This utility model relates to the field of injection molding equipment technology, and in particular to a modular injection mold with quick mold change capability. Background Technology

[0002] Injection molds are tools used in the plastics processing industry in conjunction with plastic molding machines to give plastic products a complete shape and precise dimensions. In the mass production of plastic products, the quality and changeover efficiency of injection molds directly affect the molding quality and production cycle of the products. With the continuous improvement of modern industry's requirements for production efficiency and product diversity, the ability to quickly change molds has become one of the important indicators for measuring the performance of injection molding equipment.

[0003] In traditional injection molding production, molds are installed and secured using bolts or pressure plates. While this method provides a secure connection, it requires operators to use wrenches and other specialized tools to disassemble multiple fasteners one by one when changing molds. After the new mold is installed, the tedious alignment and tightening process must be repeated. This not only makes mold changes time-consuming and labor-intensive, significantly extending equipment downtime and reducing the overall efficiency of the production line, but also, for some complex molds, frequent manual disassembly and assembly can easily cause wear or loss of fasteners, increasing maintenance costs. Furthermore, after injection molding, demolding often relies on the injection molding machine's built-in hydraulic ejection system or a separate pneumatic ejection device. This not only increases the equipment's energy consumption and structural complexity, but also requires manual access into the mold cavity to retrieve the product after ejection, or relying on gravity to fall to the bottom of the machine for collection. The former poses serious safety hazards and can easily cause mechanical injury, while the latter can lead to product splashing or accumulation during the fall, making cleanup difficult and failing to meet the demands of efficient, energy-saving, and safe modern production.

[0004] Therefore, this utility model proposes a modular injection mold with quick mold change capability to address the shortcomings of the prior art. Utility Model Content

[0005] In view of the problems existing in the production process of injection molds, such as the complex structure of the changing and fixing method, the reliance on cumbersome bolt disassembly and assembly leading to long downtime and low efficiency during mold change, and the reliance on high-energy-consuming power ejection system and manual removal during the demolding process, resulting in high production costs and poor safety, this utility model aims to provide a modular injection mold with an improved structure that can effectively solve the above problems and enable rapid mold change.

[0006] This utility model provides a modular injection mold with quick mold changing capability, including: a worktable, a quick change mechanism, a mold ejection mechanism, a lower mold and an upper mold, as well as a lower mold disposed on the right side of the inner wall of the worktable and an upper mold disposed on the left side of the inner wall of the worktable.

[0007] The quick-change mechanism is located on one side of the lower mold and includes a slide rail on the right side of the inner wall of the worktable and a slider slidably connected inside the slide rail.

[0008] Furthermore, the lower mold has a slot on its outer wall corresponding to the position of the slider, the slider engages inside the slot, a locking groove is provided at the top of the outer wall of the slider, a locking block is slidably connected to the right side of the inner wall of the worktable and above the slider, the bottom end of the locking block engages inside the locking groove, the locking block restricts the slider from disengaging from the slot, and a guide drive column is also provided on the surface of the worktable, the upper mold is movably connected to the guide drive column.

[0009] Preferably, the locking block is vertically slidably connected to the inner wall of the worktable. The locking block is configured to slide downwards under its own weight and engage with the locking groove. When the slider is inserted into the slot, the locking block automatically locks the slider, thereby fixing the lower mold.

[0010] Preferably, the ejection mechanism is provided on the outer wall of the upper mold near the lower mold. The ejection mechanism includes an extension hole formed in the outer wall of the upper mold, an ejector pin slidably connected to the inside of the extension hole, and a top block fixedly connected to the end of the ejector pin away from the upper mold. The top block connects all the ejector pins, and the length of the ejector pin is configured such that when the top block is subjected to abutment and force, the ejector pin can be ejected from the extension hole.

[0011] Preferably, the inner wall of the worktable is provided with a limiting wall surface on the left side for the top block to abut against. When the upper mold separates from the lower mold and moves away from the lower mold, the top block abuts against the inner wall of the worktable, and the inner wall of the worktable forces the ejector pin to slide out along the protrusion hole, thereby realizing automatic mold ejection.

[0012] Preferably, the bottom of the inner wall of the workbench is provided with an outlet groove, which extends through the bottom of the workbench, and the injection-molded product falls through the outlet groove.

[0013] Preferably, a collection box is slidably connected to the bottom of the outer wall of the workbench. The collection box is located directly below the outlet trough and is used to receive products falling from the outlet trough. The collection box is configured to slide out from the bottom of the workbench.

[0014] Preferably, the inner wall of the workbench is provided with slide rails on both sides of the lower mold, and the slide rails are slidably connected to the sliders. The outer wall of the lower mold is provided with slots on both sides of the corresponding positions.

[0015] Preferably, the guide drive column is disposed on the surface of the worktable, the upper mold is installed and disassembled through the guide drive column, and the upper mold moves along the guide drive column to cooperate with the lower mold for mold closing or separation.

[0016] This utility model has the following beneficial effects: 1. This utility model solves the problems of complex fixing structure, cumbersome disassembly and assembly tools, and long time consumption in the replacement process of existing injection molds by setting a quick replacement mechanism consisting of slide rail, slider, locking block and locking groove on the inner wall of the worktable, and cooperating with the slot opened on the outer wall of the lower mold. It achieves the effect of quickly completing the positioning and locking of the lower mold by using the gravity self-locking principle without the need for additional tools, significantly shortening the mold change downtime and improving production efficiency.

[0017] 2. This utility model integrates a demolding mechanism consisting of an extension hole, ejector pin, and ejector block on one side of the upper mold. By utilizing the mechanical movement stroke during mold opening in conjunction with the limiting and blocking of the inner wall of the worktable, passive impact ejection is achieved. At the same time, combined with the through-type outlet groove and collection box at the bottom, it solves the problems of existing injection molding equipment that rely on an independent power source for ejection and require manual part removal, resulting in high energy consumption, high cost, and safety hazards. It achieves the effects of energy saving and cost reduction, automatic demolding and unloading, and ensuring the safety of operators. Attached Figure Description

[0018] Figure 1 This is a front perspective view of a modular injection mold with quick mold changing capability proposed in this utility model. Figure 2 This is a schematic diagram of the lower mold of a modular injection mold with quick mold changing capability proposed in this utility model; Figure 3 This is a structural exploded view of the slider of a modular injection mold with quick mold changing capability proposed in this utility model; Figure 4 This is a structural exploded view of a collection box for a modular injection mold with quick mold changing capability proposed in this utility model; Figure 5 This is a structural exploded view of the top block of a modular injection mold with quick mold changing proposed in this utility model.

[0019] Legend: 1. Workbench; 2. Quick change mechanism; 201. Slider; 202. Slide rail; 203. Locking groove; 204. Locking block; 205. Slot; 3. Ejection mechanism; 301. Protrusion hole; 302. Ejector pin; 303. Ejector block; 304. Exit groove; 305. Collection box; 4. Lower mold; 5. Upper mold. Detailed Implementation

[0020] To make the objectives, technical solutions, and advantages of this utility model clearer, the technical solutions in the embodiments of this utility model will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only a part of the embodiments of this utility model, and not all of them. All other embodiments obtained by those skilled in the art based on the embodiments of this utility model without creative effort are within the scope of protection of this utility model.

[0021] Example: Please refer to Figures 1 to 5 This utility model provides a modular injection mold that can be quickly changed, which aims to solve the problems of low production efficiency caused by the cumbersome and time-consuming process of changing existing injection molds, and the high cost and safety hazards caused by the reliance on manual part removal or high-energy ejection mechanism in traditional mold ejection methods.

[0022] Please refer to Figure 1 and Figure 2 A modular injection mold with quick mold change capability includes a worktable 1, a lower mold 4 disposed at the bottom of the inner wall of the worktable 1, and an upper mold 5 disposed at the top of the inner wall of the worktable 1 and above the lower mold 4. The worktable 1 serves as the basic support component of the entire device, providing installation space and stable support. The lower mold 4, as a fixed lower molding component, is installed on the right side of the inner wall of the worktable 1. The upper mold 5, as a movable upper molding component, is installed on the left side of the inner wall of the worktable 1 and can perform mold closing and opening movements relative to the lower mold 4. In order to achieve convenient mold assembly and disassembly, a quick change mechanism 2 is provided on one side of the lower mold 4. The lower mold 4 establishes a connection relationship with the worktable 1 through the quick change mechanism 2. At the same time, in order to achieve automated demolding, an ejection mechanism 3 is provided on one side of the upper mold 5. The ejection mechanism 3 is configured to automatically eject the molded product during the mold opening stroke.

[0023] Please refer to Figure 2 and Figure 3The quick-change mechanism 2 includes a slide rail 202 on the right side of the inner wall of the workbench 1, and a slider 201 slidably connected to the inner wall of the slide rail 202. The outer wall of the lower mold 4 has a slot 205 for the slider 201 to be inserted into, corresponding to the position of the slider 201. When the lower mold 4 is placed in place, the slider 201 can slide along the slide rail 202 and engage with the inside of the slot 205, thereby restricting the displacement of the lower mold 4 in the horizontal direction. In order to prevent the slider 201 from accidentally coming out, a locking groove 203 is provided at the top of the outer wall of the slider 201. A locking block 204 is slidably connected to the inner wall of the workbench 1 above the slider 201. The bottom end of the locking block (204) can engage with the inside of the locking groove 203. Through the engagement of the locking block 204 into the locking groove 203, the sliding freedom of the slider 201 in the slide rail 202 is restricted, thereby achieving a stable lock on the lower mold 4.

[0024] Please refer to Figure 4 and Figure 5 The ejection mechanism 3 includes an extension hole 301 on the outer wall of the upper mold 5 and an ejector pin 302 slidably connected to the inner wall of the extension hole 301. The end of the ejector pin 302 away from the lower mold 4 is fixedly connected to the same ejector block 303. The ejector block 303 connects multiple ejector pins 302 into a whole and moves synchronously with the ejector pins 302. This structure ensures that when the upper mold 5 moves away from the lower mold 4, the ejector pin 302 can extend outward along the extension hole 301 under the force driven by the ejector block 303 to perform the ejection action. In addition, the bottom of the inner wall of the worktable 1 is provided with an outlet groove 304 that penetrates the bottom of the worktable 1. The bottom of the outer wall of the worktable 1 is also slidably connected to a collection box 305. The collection box 305 is located directly below the outlet groove 304. This through-type structure ensures that the product pushed down by the ejector pin 302 can directly pass through the outlet groove 304 and fall into the collection box 305.

[0025] As a preferred embodiment, in order to use gravity to achieve automatic locking and simplify operation, the locking block 204 and the inner wall of the worktable 1 are connected by a vertical sliding connection. The locking block 204 slides down vertically and gets into the locking groove 203 by its own weight. When the slider 201 slides to the alignment position, the locking block 204 automatically falls to complete the locking. To unlock, simply push the locking block 204 upward.

[0026] As another preferred embodiment, in order to achieve automatic demolding and save energy by utilizing mechanical stroke, the inner wall of the worktable 1 is provided with a limiting wall surface for the ejector block 303 to abut against on the side away from the quick change mechanism 2. When the upper mold 5 drives the ejector block 303 to move away from the lower mold 4, the ejector block 303 abuts against the limiting wall surface and stops moving, while the upper mold 5 continues to move, forcing the ejector pin 302 to extend outward along the extension hole 301, thereby ejecting the product.

[0027] As another preferred embodiment, in order to improve the stability of mold fixing, slide rails 202 and sliders 201 are symmetrically arranged on both sides of the inner wall of the worktable 1, and slots 205 are symmetrically opened on both sides of the outer wall of the lower mold 4. Through the double-sided symmetrical locking structure, the force balance and position stability of the lower mold 4 during the injection molding process are ensured.

[0028] As another preferred embodiment, in order to achieve precise guidance and movement of the upper mold 5, the surface of the worktable 1 is provided with guide drive columns. The upper mold 5 is connected to the worktable 1 through the guide drive columns. The guide drive columns are used to drive the upper mold 5 to perform lifting and horizontal movements, thereby cooperating with the lower mold 4 to complete the mold closing injection and mold opening demolding process.

[0029] Working principle: When the lower mold 4 needs to be installed, the lower mold 4 is placed on the right side of the inner wall of the workbench 1. Then, slide the sliders 201 on both sides of the workbench 1 so that the two sliders 201 respectively engage with the slots 205 on both sides of the outer wall of the lower mold 4. When the sliders 201 are fully inserted, the locking block 204 located above falls vertically under its own weight and engages with the locking groove 203 at the top of the slider 201. At this time, the locking block 204 locks the position of the slider 201, and the slider 201 locks the position of the lower mold 4, thus achieving quick fixation. When injection molding is required, the upper mold 5 moves under the drive of the guide drive column and closes with the lower mold 4 for injection molding. After injection molding is completed, the upper mold 5 separates from the lower mold 4 and moves away from the lower mold 4. During this process, the ejector block 303 will abut against the limiting wall on the left side of the inner wall of the worktable 1. As the upper mold 5 continues to move, the ejector block 303 forces the ejector pin 302 to move forward and eject from the extension hole 301, thereby pushing the injection-molded product off the upper mold 5. After the product falls, it passes through the outlet groove 304 at the bottom of the worktable 1 and falls directly into the collection box 305 below. After the collection box is full, it can be slid out from the bottom of the worktable 1. If the lower mold 4 needs to be replaced, simply slide the locking block 204 upward to disengage from the locking groove 203, and then slide the slider 201 to disengage from the slot 205 to remove the lower mold 4.

Claims

1. A modular injection mold with quick mold change capability, comprising: Workbench (1), quick change mechanism (2), mold ejection mechanism (3), lower mold (4) and upper mold (5); Its features are, The lower mold (4) is provided on the right side of the inner wall of the workbench (1), and the upper mold (5) is provided on the left side of the inner wall of the workbench (1). The quick-change mechanism (2) is provided on one side of the lower mold (4). The quick-change mechanism (2) includes a slide rail (202) opened on the right side of the inner wall of the worktable (1) and a slider (201) slidably connected inside the slide rail (202). The outer wall of the lower mold (4) is provided with a slot (205) corresponding to the position of the slider (201). The slider (201) is engaged inside the slot (205). A locking groove (203) is opened at the top of the outer wall of the slider (201). A locking block (204) is slidably connected on the right side of the inner wall of the worktable (1) and above the slider (201). The bottom end of the locking block (204) is engaged inside the locking groove (203). The locking block (204) restricts the slider (201) from disengaging from the slot (205). The workbench (1) is also provided with a guide drive column, and the upper mold (5) is movably connected to the guide drive column.

2. The modular injection mold with quick mold change capability according to claim 1, characterized in that, The locking block (204) is vertically slidably connected to the inner wall of the worktable (1). The locking block (204) is configured to slide downward under its own weight and be inserted into the locking groove (203). When the slider (201) is inserted into the slot (205), the locking block (204) automatically locks the slider (201) to fix the lower mold (4).

3. A modular injection mold with quick mold change capability according to claim 1, characterized in that, The ejection mechanism (3) is provided on the outer wall of the upper mold (5) near the lower mold (4). The ejection mechanism (3) includes an extension hole (301) opened on the outer wall of the upper mold (5), an ejector pin (302) slidably connected to the inside of the extension hole (301), and a top block (303) fixedly connected to the end of the ejector pin (302) away from the upper mold (5). The top block (303) connects all the ejector pins (302). The length of the ejector pin (302) is configured such that when the top block (303) is subjected to force, the ejector pin (302) can be ejected from the extension hole (301).

4. A modular injection mold with quick mold change capability according to claim 3, characterized in that, The inner wall of the worktable (1) is provided with a limiting wall surface for the top block (303) to abut against. When the upper mold (5) separates from the lower mold (4) and moves away from the lower mold (4), the top block (303) abuts against the inner wall of the worktable (1). The inner wall of the worktable (1) forces the ejector pin (302) to slide out along the protrusion hole (301) to achieve automatic demolding.

5. A modular injection mold with quick mold change capability according to claim 1, characterized in that, An outlet groove (304) is provided at the bottom of the inner wall of the workbench (1). The outlet groove (304) penetrates the bottom of the workbench (1), and the injection-molded product falls through the outlet groove (304).

6. A modular injection mold with quick mold change capability according to claim 5, characterized in that, A collection box (305) is slidably connected to the bottom of the outer wall of the workbench (1). The collection box (305) is located directly below the outlet groove (304). The collection box (305) is used to receive products falling from the outlet groove (304). The collection box (305) is configured to slide out from the bottom of the workbench (1).

7. A modular injection mold with quick mold change capability according to claim 1, characterized in that, The inner wall of the workbench (1) is provided with slide rails (202) on both sides of the lower mold (4), and the slide rails (202) are slidably connected to the sliders (201). The slots (205) are provided on both sides of the outer wall of the lower mold (4).

8. A modular injection mold with quick mold change capability according to claim 1, characterized in that, The guide drive column is disposed on the surface of the worktable (1). The upper mold (5) is installed and disassembled through the guide drive column. The upper mold (5) moves along the guide drive column to cooperate with the lower mold (4) for mold closing or separation.

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