A plastic product injection molding machine locking mechanism

Abstract

The utility model discloses a kind of plastic product injection molding machine locking mechanism, it is related to the technical field of locking mechanism, it is solved that locking mechanism when using, staff still needs to push clamping plate, until the clamping plate of both sides clamps mold can strengthen the locking strength between mold, not only improve the labor intensity of staff, simultaneously, clamping plate is the both sides of mold clamping, cannot prevent mold from moving up and down and cause the sealing stability between mold, thereby reduce the use efficiency of the locking mechanism Problem, including bottom plate, lower mold and upper mold, the lower mold is fixedly installed on the upper end of bottom plate, upper mold is set on the upper end of lower mold, the first cylinder output shaft is slid in the inside of connecting pipe by being set, can be extruded to upper mold by wedge block after moving downward to upper mold, improve the tightness between upper mold and lower mold.

Description

Technical Field

[0001] This utility model relates to the technical field of mold locking mechanisms, specifically a mold locking mechanism for a plastic product injection molding machine. Background Technology

[0002] The mold clamping mechanism of a plastic injection molding machine is a key component of the machine. It is mainly responsible for ensuring the accurate closure and retention of the mold during the injection process, so as to ensure that the molten plastic is effectively formed in the mold cavity.

[0003] A search revealed Chinese patent publication number CN221271941U, which discloses a mold clamping mechanism for an injection molding machine. The lower end of the support structure is equipped with a locking structure one for clamping the mold, and the middle of the support structure is equipped with a locking structure two for further clamping the mold in conjunction with the locking structure one. When the locking structure two moves downwards, it locks the locking structure one. To clamp the mold, simply pull the handle, causing the insert rod one to automatically lock the clamping plate one, allowing the mold to be placed in the middle of the lower support plate. Pressing down the lower pressure rod causes the spring two to clamp the mold in conjunction with the clamping plate one. Then, activating the electric push rod and motor allows the clamping plate one to further clamp the mold.

[0004] However, when using this mold-locking mechanism, the operator needs to push the clamping plates until the clamping plates on both sides clamp the mold to strengthen the locking force between the molds. This not only increases the labor intensity of the operator, but also, since the clamping plates clamp the mold on both sides, they cannot prevent the mold from moving up and down and thus affect the stability of the seal between the molds, thereby reducing the efficiency of the mold-locking mechanism. Utility Model Content

[0005] To address the shortcomings of existing technologies, this utility model provides a mold-locking mechanism for a plastic product injection molding machine. This solves the problem that, during operation, operators still need to push the clamping plates until both sides clamp the mold to strengthen the locking force. This not only increases the labor intensity of the operators but also, since the clamping plates only clamp the sides of the mold, they cannot prevent the mold from moving up and down, thus affecting the stability of the seal between the molds and reducing the efficiency of the mold-locking mechanism.

[0006] To achieve the above objectives, this utility model provides the following technical solution: a clamping mechanism for a plastic product injection molding machine, comprising a base plate, a lower mold, and an upper mold. The lower mold is fixedly installed on the upper end of the base plate, and the upper mold is positioned on the upper end of the lower mold. An L-shaped plate is symmetrically fixedly installed on the upper end of the base plate, and the upper and lower molds are positioned between the two L-shaped plates. The upper mold is slidably connected between the two L-shaped plates. Wedge blocks are symmetrically arranged between the two L-shaped plates. A second cylinder is fixedly installed on the sidewall of each L-shaped plate. The output shaft of the second cylinder is fixedly connected to the sidewall of the wedge block through the interior of the L-shaped plate. The wedge block presses against the upper end of the upper mold, which is attached to the lower mold.

[0007] Preferably, a first cylinder is fixedly installed on the upper end of each L-shaped plate, and a connecting pipe is symmetrically fixedly installed on the upper end of the upper mold. The output shaft of the first cylinder is slidably connected to the inside of the connecting pipe through the inside of the L-shaped plate. A controller is fixedly installed on the upper end of the base plate. The first cylinder and the second cylinder are linearly connected to the controller, thereby facilitating the downward pushing of the upper mold.

[0008] Preferably, a limiting block is fixedly installed at the bottom of the output shaft of the first cylinder. The limiting block is slidably connected to the inside of the connecting pipe. A threaded pipe is slidably sleeved on the outside of the first cylinder. The threaded pipe is threadedly sleeved on the upper end of the connecting pipe, thereby facilitating the upper mold to move up and down.

[0009] Preferably, sliders are fixedly installed on the side walls of both ends of the upper mold and the lower mold, and limit posts are fixedly installed between the L-shaped plate and the base plate. The sliders are slidably sleeved on the outside of the limit posts, so as to make the positions of the upper mold and the lower mold correspond.

[0010] Preferably, a support block is fixedly installed at the upper end of the wedge block, and a limiting rod is fixedly installed on the side wall of the support block. The limiting rods pass through the interior of the L-shaped plate and extend to the exterior of the L-shaped plate, and are slidably connected to the interior of the L-shaped plate, thereby facilitating the limiting of the position of the wedge block.

[0011] Preferably, the diameter of the limiting block is greater than the diameter of the first cylinder output shaft, and the thickness of the limiting block is less than the depth of the connecting pipe, so as to facilitate the wedge block to press the upper mold downward.

[0012] This utility model provides a mold-locking mechanism for a plastic product injection molding machine. It has the following beneficial effects: This is a clamping mechanism for a plastic product injection molding machine. When using the clamping mechanism, the upper mold is squeezed by a set wedge block, which can effectively strengthen the tightness of the connection between the upper mold and the lower mold. Furthermore, the wedge block is moved by a second cylinder, which can improve the efficiency of tightening the upper mold. This type of mold clamping mechanism for plastic product injection molding machines allows the first cylinder output shaft to slide inside the connecting pipe. After the upper mold moves downward, the wedge block can also be used to squeeze the upper mold, improving the tightness between the upper and lower molds. Attached Figure Description

[0013] Fig. 1 This is a schematic diagram of the overall structure of this utility model; Fig. 2 This is a side view of the present invention; Fig. 3 This is a schematic diagram of the disassembly structure of the cylinder and connecting pipe of this utility model.

[0014] In the diagram, 1 is the base plate; 2 is the lower mold; 3 is the limiting block; 4 is the upper mold; 5 is the limiting post; 6 is the L-shaped plate; 7 is the slider; 8 is the controller; 9 is the first cylinder; 10 is the wedge block; 11 is the support block; 12 is the limiting rod; 13 is the second cylinder; 14 is the connecting pipe; and 15 is the threaded pipe. Detailed Implementation

[0015] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0016] Please see Figs. 1-3This utility model provides a clamping mechanism for a plastic injection molding machine, including a base plate 1, a lower mold 2, and an upper mold 4. The lower mold 2 is fixedly installed on the upper end of the base plate 1, and the upper mold 4 is disposed on the upper end of the lower mold 2. L-shaped plates 6 are symmetrically fixedly installed on the upper end of the base plate 1, and the upper mold 4 and the lower mold 2 are disposed between the two L-shaped plates 6. The upper mold 4 is slidably connected between the two L-shaped plates 6. Wedge blocks 10 are symmetrically arranged between the two L-shaped plates 6. Second cylinders 13 are fixedly installed on the side walls of each L-shaped plate 6. The output shafts of the second cylinders 13 are respectively fixedly connected to the side walls of the wedge blocks 10 through the interior of the L-shaped plates 6. The wedge blocks 10 press the upper end of the upper mold 4, which is attached to the lower mold 2. First cylinders 9 are fixedly installed on the upper ends of each L-shaped plate 6. Connecting pipes 14 are symmetrically fixedly installed on the upper ends of the upper mold 4. The output shafts of the first cylinders 9 are respectively slidably connected to the interior of the connecting pipes 14 through the interior of the L-shaped plates 6. A controller 8 is fixedly installed at the upper end of the first cylinder 1. The first cylinder 9 and the second cylinder 13 are linearly connected to the controller 8. A limit block 3 is fixedly installed at the bottom of the output shaft of the first cylinder 9. The limit block 3 is slidably connected to the inside of the connecting pipe 14. A threaded pipe 15 is slidably sleeved on the outside of the first cylinder 9. The threaded pipe 15 is threadedly sleeved on the upper end of the connecting pipe 14. Slider blocks 7 are fixedly installed on the side walls of the upper mold 4 and the lower mold 2. Limit posts 5 are fixedly installed between the L-shaped plate 6 and the base plate 1. The sliders 7 are slidably sleeved on the outside of the limit posts 5. A support block 11 is fixedly installed at the upper end of the wedge block 10. Limit rods 12 are fixedly installed on the side walls of the support block 11. The limit rods 12 pass through the inside of the L-shaped plate 6 and extend to the outside of the L-shaped plate 6. They are slidably connected inside the L-shaped plate 6. The diameter of the limit block 3 is larger than the diameter of the output shaft of the first cylinder 9. The thickness of the limit block 3 is smaller than the depth of the connecting pipe 14.

[0017] It should be noted that, in this embodiment, as Figs. 1-3 As shown, when tightly connecting the upper mold 4 and the lower mold 2, the first cylinder 9 is activated first, its output shaft slides inside the connecting pipe 14, driving the upper mold 4 downward. When the upper mold 4 approaches the lower mold 2, the controller 8 adjusts the working state of the second cylinder 13, causing the wedge block 10 to apply additional pressure to the upper mold 4. This pressure application effectively prevents the mold from shifting up and down during injection molding, ensuring the sealing between the molds. In addition, the cooperation of the support block 11 and the limiting rod 12 further enhances the accuracy of mold positioning, preventing displacement during high-pressure injection molding. In this way, not only are the manual operation steps reduced, but the efficiency and stability of mold clamping are also significantly improved. The entire process is precisely controlled by the controller, ensuring the consistency and reliability of each operation.

[0018] The foregoing has shown and described the basic principles, main features, and advantages of this utility model. It will be apparent to those skilled in the art that this utility model is not limited to the details of the exemplary embodiments described above, and that it can be implemented in other specific forms without departing from the spirit or basic characteristics of this utility model. Therefore, the embodiments should be considered exemplary and non-limiting in all respects. The scope of this utility model is defined by the appended claims rather than the foregoing description, and thus all variations falling within the meaning and scope of equivalents of the claims are intended to be included within this utility model. No reference numerals in the claims should be construed as limiting the scope of the claims.

[0019] Furthermore, it should be understood that although this specification describes embodiments, not every embodiment contains only one independent technical solution. This narrative style is merely for clarity. Those skilled in the art should consider the specification as a whole, and the technical solutions in each embodiment can also be appropriately combined to form other embodiments that can be understood by those skilled in the art.

Claims

1. A mold-locking mechanism for a plastic product injection molding machine, characterized in that: The system includes a base plate (1), a lower mold (2), and an upper mold (4). The lower mold (2) is fixedly installed on the upper end of the base plate (1), and the upper mold (4) is set on the upper end of the lower mold (2). An L-shaped plate (6) is symmetrically fixedly installed on the upper end of the base plate (1), and the upper mold (4) and the lower mold (2) are set between the two L-shaped plates (6). The upper mold (4) is slidably connected between the two L-shaped plates (6). A wedge block (10) is symmetrically arranged between the two L-shaped plates (6). A second cylinder (13) is fixedly installed on the side wall of each L-shaped plate (6). The output shaft of the second cylinder (13) is fixedly connected to the side wall of the wedge block (10) through the interior of the L-shaped plate (6). The wedge block (10) squeezes the upper end of the upper mold (4) that is attached to the lower mold (2).

2. The mold clamping mechanism for a plastic product injection molding machine according to claim 1, characterized in that: The upper end of each L-shaped plate (6) is fixedly equipped with a first cylinder (9), and the upper end of the upper mold (4) is symmetrically fixedly equipped with a connecting pipe (14). The output shaft of the first cylinder (9) is slidably connected to the inside of the connecting pipe (14) through the inside of the L-shaped plate (6). The upper end of the base plate (1) is fixedly equipped with a controller (8). The first cylinder (9) and the second cylinder (13) are linearly connected to the controller (8).

3. The mold clamping mechanism for a plastic product injection molding machine according to claim 2, characterized in that: A limiting block (3) is fixedly installed at the bottom of the output shaft of the first cylinder (9). The limiting block (3) is slidably connected to the inside of the connecting pipe (14). A threaded pipe (15) is slidably sleeved on the outside of the first cylinder (9). The threaded pipe (15) is threadedly sleeved on the upper end of the connecting pipe (14).

4. The mold clamping mechanism for a plastic product injection molding machine according to claim 1, characterized in that: The upper mold (4) and the lower mold (2) are respectively fixedly installed with sliders (7) on both side walls. Limiting posts (5) are fixedly installed between the L-shaped plate (6) and the base plate (1). The sliders (7) are respectively slidably sleeved on the outside of the limiting posts (5).

5. The mold clamping mechanism for a plastic product injection molding machine according to claim 1, characterized in that: A support block (11) is fixedly installed on the upper end of the wedge block (10). Limiting rods (12) are fixedly installed on the side walls of the support block (11). The limiting rods (12) pass through the interior of the L-shaped plate (6) and extend to the exterior of the L-shaped plate (6), and are slidably connected inside the L-shaped plate (6).

6. The mold clamping mechanism for a plastic product injection molding machine according to claim 3, characterized in that: The diameter of the limiting block (3) is greater than the diameter of the output shaft of the first cylinder (9), and the thickness of the limiting block (3) is less than the depth of the connecting pipe (14).

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