A safety guard for a nozzle of an injection molding machine

Abstract

The utility model relates to injection molding machine technical field discloses a kind of injection molding machine nozzle safety protection device, to solve the problem of raw material waste and product defect caused by inaccuracy of discharging control, inconvenient disassembly and assembly of protection device, slow emergency response in prior art.The device includes clamping mechanism and quantitative discharging component;The clamping mechanism includes motor, transmission rod one, transmission rod two, guide rod, sliding block and clamp, motor drives transmission rod one rotation, drives transmission rod two to move;The quantitative discharging component includes cylinder, connecting rod one, L-shaped plate, connecting rod two and round plate.The utility model realizes the quick release function of protective cover by above structure, greatly improves the convenience of equipment maintenance and the response speed of processing emergency situation such as material leakage;On the other hand, by accurate quantitative discharging, effectively avoid the product defect caused by uneven raw material supply, improve product quality and pass rate.

Description

Technical Field

[0001] This utility model relates to the field of injection molding machine technology, and in particular to a safety protection device for injection molding machine nozzles. Background Technology

[0002] Injection molding machines are core equipment in plastic product manufacturing, and their nozzle area is a critical part for injecting high-temperature molten plastic, as well as a high-risk area for safety accidents and equipment failures. To prevent molten material splashing from injuring operators and to facilitate nozzle maintenance, safety guards are usually installed on the outside of the nozzle. However, most existing guards are fixed with bolts and other fasteners. While this connection method is structurally reliable, the disassembly and assembly process is cumbersome and time-consuming. Especially when emergencies such as nozzle leakage or blockage occur, which require urgent handling, the guard cannot be quickly removed for inspection, not only delaying valuable processing time but also potentially causing the malfunction to worsen, posing a safety hazard.

[0003] Furthermore, in injection molding, the amount of raw material supplied is crucial to the quality of the final product. Traditional feeding methods often make it difficult to accurately and consistently control the amount of raw material used in each injection. Fluctuations in the material supply can easily lead to molding defects such as material shortages, shrinkage marks, or flash, which not only affects the product yield but also wastes high-value engineering plastics.

[0004] Therefore, this utility model proposes a safety protection device for injection molding machine nozzles to address the shortcomings of existing technologies. Utility Model Content

[0005] In view of the problems in existing injection molding machine nozzle safety protection devices, such as inconvenient disassembly and assembly leading to slow emergency response, and inaccurate material control resulting in material waste and product defects, this utility model aims to provide an injection molding machine nozzle safety protection device with an improved structure that can effectively solve the above problems.

[0006] This utility model provides a safety protection device for the nozzle of an injection molding machine, including: a worktable, a protective cover, a clamping mechanism, and a quantitative feeding component.

[0007] The clamping mechanism includes a motor, a first transmission rod, a second transmission rod, a guide rod, a sliding block, and a clamp; the quantitative feeding assembly includes a cylinder, a first connecting rod, an L-shaped plate, a second connecting rod, and a circular plate.

[0008] Furthermore, in the clamping mechanism, the motor is driven to drive the transmission rod one, the transmission rod one is driven to drive the transmission rod two, the transmission rod two is driven to drive the sliding block, the sliding block slides along the guide rod, and the sliding block is fixedly connected to the clamp.

[0009] Preferably, in the quantitative feeding assembly, the cylinder is driven to connect to the first connecting rod, the first connecting rod is driven to connect to the L-shaped plate, and the L-shaped plate is driven to connect to the circular plate through the second connecting rod. Through the combination of the above components, the quick disassembly of the protective cover and the quantitative supply of materials are achieved in a coordinated manner.

[0010] Preferably, the clamping mechanism further includes a square box, and the motor, transmission rod one, transmission rod two, and guide rod are all housed or installed inside the square box.

[0011] Preferably, the sliding block and the clamp together constitute a fixing assembly.

[0012] Preferably, the quantitative feeding assembly further includes a support plate and a fixing plate, wherein the connecting rod slidably passes through the support plate, the fixing plate is fixedly connected to the front end of the connecting rod, and the L-shaped plate is pivotally connected to the fixing plate.

[0013] Preferably, the quantitative feeding assembly further includes a mounting box, and the cylinder, connecting rod one, support plate and fixing plate are all disposed inside the mounting box.

[0014] Preferably, the device is installed on the injection molding machine body, and the quantitative feeding component is provided with a feeding end that communicates with the hopper and the conveying pipe, and a discharging end that is connected to the feeding port of the injection molding machine body.

[0015] Preferably, the end of the transmission rod two is hinged to the sliding block.

[0016] Preferably, the rotating shaft of the L-shaped plate is connected to the connecting rod two via a coupling.

[0017] Preferably, the inner wall of the circular plate is fixed to the outer wall of the connecting rod 2.

[0018] This utility model has the following beneficial effects:

[0019] 1. This utility model solves the problems of existing protective covers being mostly fixed with bolts, cumbersome disassembly and assembly, and slow response in emergency situations by setting a clamping mechanism that is driven by a motor to control the opening and closing of the clamp. It achieves the technical effect of enabling quick disassembly and assembly of protective covers, improving maintenance convenience and emergency handling capabilities.

[0020] 2. This utility model solves the problem of material shortage, shrinkage marks, or flash caused by unstable material feeding in the prior art by setting a quantitative feeding component that is driven by a cylinder to control the opening and closing of the feeding port. It achieves the technical effect of accurately controlling the raw material supply and significantly improving the product qualification rate and quality stability.

[0021] 3. This utility model solves the problems of excessive waste of raw materials and nozzle blockage caused by unstable material supply in the traditional feeding mode by realizing accurate metering and stable supply of materials, thereby achieving the technical effect of saving production costs and reducing equipment failure rate and maintenance frequency. Attached Figure Description

[0022] Figure 1 This is a three-dimensional schematic diagram of a safety protection device for an injection molding machine nozzle proposed in this utility model;

[0023] Figure 2 This is a schematic diagram of the workbench structure of the injection molding machine nozzle safety protection device proposed in this utility model;

[0024] Figure 3 This is a schematic diagram of the structure of a square box for a safety protection device for injection molding machine nozzles proposed in this utility model;

[0025] Figure 4 This is a schematic diagram of the installation box for a safety protection device for the nozzle of an injection molding machine proposed in this utility model.

[0026] Legend:

[0027] 1. Workbench; 2. Injection molding machine body; 3. Clamping mechanism; 31. Square box; 32. Motor; 33. Transmission rod one; 34. Transmission rod two; 35. Guide rod; 36. Fixing component; 361. Sliding block; 362. Fixture; 363. Protective cover; 4. Material bin; 5. Conveying pipe; 6. Quantitative feeding component; 61. Mounting box; 62. Cylinder; 63. Connecting rod one; 64. Support plate; 65. Fixing plate; 66. L-shaped plate; 67. Connecting rod two; 68. Round plate; 7. Feed port. Detailed Implementation

[0028] 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.

[0029] Example:

[0030] Please refer to Figures 1 to 4 This utility model provides a safety protection device for injection molding machine nozzles, which aims to solve the problems of inconvenient disassembly and assembly of existing injection molding machine nozzle protection devices, resulting in slow emergency response, and inaccurate material control, leading to material waste and product defects.

[0031] like Figure 1 and Figure 2 As shown, the injection molding machine nozzle safety protection device is installed on the injection molding machine body 2. It includes a worktable 1, a clamping mechanism 3 and a quantitative feeding assembly 6 fixedly connected to the worktable 1. The worktable 1 serves as the mounting base for the entire device. The clamping mechanism 3 is used to quickly clamp and release the protective cover 363. The protective cover 363 is used to shield and protect the nozzle area of ​​the injection molding machine body 2. The quantitative feeding assembly 6 is used to receive materials from the hopper 4 and the conveying pipe 5 and to accurately feed them quantitatively to the feed inlet 7 of the injection molding machine body 2.

[0032] To achieve rapid assembly and disassembly of the protective cover 363, the core of the technical solution in this embodiment lies in the specific structural cooperation and connection relationship between the various components inside the clamping mechanism 3.

[0033] Please refer to the following carefully. Figure 1 and Figure 3 The core structure will be described in detail below:

[0034] The clamping mechanism 3 includes a square box 31, which houses or installs a motor 32 as a drive source, a first transmission rod 33, a second transmission rod 34, and a guide rod 35. The output end of the motor 32 is connected to the first transmission rod 33. The rotation of the first transmission rod 33 drives the second transmission rod 34 to move. The guide rod 35 provides guidance. The clamping mechanism 3 also includes a sliding block 361 and a clamp 362 as part of the fixing component 36. The clamp 362 is fixedly connected to the sliding block 361. In the assembled state, the sliding block 361 is sleeved on the guide rod 35 and slidably connected along its axial direction. At the same time, the end of the second transmission rod 34 is hinged to the sliding block 361. This cooperative structure, in which the motor drives the connecting rod and then drives the slider to slide along the guide rod, ensures that the clamp 362 can open or close stably, thereby realizing the rapid clamping and release action of the protective cover 363.

[0035] Based on the above embodiments, the present invention may further include the following preferred technical solutions:

[0036] As a preferred implementation method, refer to Figure 4The internal structure of the quantitative feeding assembly 6 is further defined, including a mounting box 61. Inside the mounting box 61 are a cylinder 62, a connecting rod 63, a support plate 64, and a fixing plate 65. The connecting rod 63 slides through the support plate 64, and the fixing plate 65 is fixedly connected to the front end of the connecting rod 63. An L-shaped plate 66 is pivotally connected to the fixing plate 65, and the rotation shaft of the L-shaped plate 66 is connected to a connecting rod 67 via a coupling to achieve precise power transmission. The mounting box 61 serves as the mounting carrier for the internal components, providing a stable mounting space and support foundation for the cylinder 62, connecting rod 63, support plate 64, and fixing plate 65. These components, through orderly assembly within the mounting box 61, collectively constitute the functional main body of the quantitative feeding assembly 6; the cylinder 62 provides power to the entire assembly. The drive end can drive the connecting rod 63 to move, and the connecting rod 63 transmits the power of the cylinder 62 to the fixed plate 65 at the front end, so that the fixed plate 65 can perform corresponding actions. The support plate 64 plays a guiding and limiting role for the sliding connecting rod 63, ensuring that the connecting rod 63 moves smoothly and accurately. The sliding of the connecting rod 63 depends on the support provided by the support plate 64. The fixed plate 65 provides a pivot mounting point for the L-shaped plate 66, so that the L-shaped plate 66 can rotate stably around it. The L-shaped plate 66 achieves angle adjustment through the pivot engagement with the fixed plate 65. The rotation shaft of the L-shaped plate 66 is connected to the connecting rod 67 through a coupling. The coupling ensures the accuracy of power transmission between the two. The connecting rod 67 transmits power to the L-shaped plate 66, driving it to rotate accurately and achieving precise control of quantitative feeding.

[0037] As another preferred implementation, refer to Figure 3 The end of the transmission rod 34 is hinged to the sliding block 361, so that the translational motion of the transmission rod 34 can be smoothly converted into the linear sliding of the sliding block 361. At the same time, the sliding block 361 and the clamp 362 together constitute the components of the fixed assembly 36. The hinge between the transmission rod 34 and the sliding block 361 not only allows the translational motion of the transmission rod 34 to be smoothly converted into the linear sliding of the sliding block 361, but also provides a power transmission fulcrum for the sliding block 361 through the hinge relationship. As components of the fixed assembly 36, the sliding block 361 drives the clamp 362 to move, and the clamp 362 converts the motion of the sliding block 361 into a fixing function, thus jointly realizing the fixing function of the assembly.

[0038] As another preferred embodiment, refer to Figure 1The entire device is installed on the injection molding machine body 2. The quantitative feeding component 6 has a feeding end that is connected to the hopper 4 and the conveying pipe 5, and a discharging end that is connected to the inlet 7 of the injection molding machine body 2, thus forming a complete material conveying path. The entire device is installed on the injection molding machine body 2, and the injection molding machine body 2 serves as the installation base to achieve stable deployment. At the same time, it provides nozzle protection and quantitative feeding guarantee for the injection molding machine body 2. The feeding end of the quantitative feeding component 6 is connected to the hopper 4 and the conveying pipe 5 to receive the material conveyed by them. The hopper 4 and the conveying pipe 5 supply material to the quantitative feeding component 6 through the feeding end. The discharging end is connected to the inlet 7 of the injection molding machine body 2 to accurately deliver the material to the inlet 7, ensuring the raw material supply of the injection molding machine.

[0039] When the protective cover 363 needs to be replaced, the motor 32 inside the clamping mechanism 3 is started. After the motor 32 is powered on, it outputs rotational power to drive the transmission rod 33 to rotate synchronously. As the transmission rod 33 rotates, the transmission rod 34 connected to it moves horizontally, thereby pushing the sliding block 361 to slide smoothly along the outer wall of the guide rod 35. Under the drive of the transmission rod 34, the sliding block 361 moves in conjunction with the clamp 362 connected to it. When the sliding block 361 moves in a different direction, the clamp 362 separates and releases its clamping of the protective cover 363, thus realizing the replacement of the protective cover 363. Quick disassembly; when quantitative feeding is required, the cylinder 62 inside the mounting box 61 is activated first. The cylinder 62 pushes the connecting rod 63 to move smoothly inside the support plate 64. As the connecting rod 63 is pushed forward, the fixing plate 65 at its front end moves forward synchronously. During the movement, the L-shaped plate 66 inside the fixing plate 65 is activated and begins to rotate. The L-shaped plate 66 drives the circular plate 68 at the feeding port to rotate synchronously through the connecting rod 67. By precisely controlling the rotation angle of the circular plate 68, the opening and closing size and duration of the feeding channel are adjusted, ultimately achieving a precise and stable quantitative feeding effect.

Claims

1. A safety protection device for an injection molding machine nozzle, comprising: Workbench (1); Protective shield (363); Clamping mechanism (3), the clamping mechanism (3) is used to clamp the protective cover (363); Quantitative feeding component (6); Its features are, The clamping mechanism (3) includes a motor (32), a transmission rod one (33) connected to the output end of the motor (32), a transmission rod two (34), a guide rod (35), a sliding block (361) sliding along the guide rod (35), and a clamp (362) fixed on the sliding block (361). The motor (32) drives the transmission rod one (33) to rotate, thereby driving the transmission rod two (34) to move, and then driving the sliding block (361) to work in conjunction with the clamp (362) to clamp or release the protective cover (363).

2. The injection molding machine nozzle safety protection device according to claim 1, characterized in that, The quantitative feeding component (6) includes a cylinder (62), a connecting rod 1 (63) connected to the output end of the cylinder (62), an L-shaped plate (66), a connecting rod 2 (67), and a circular plate (68). The cylinder (62) drives the connecting rod 1 (63) to move, thereby driving the L-shaped plate (66) to rotate. The L-shaped plate (66) drives the circular plate (68) to rotate through the connecting rod 2 (67) to control the material falling.

3. The injection molding machine nozzle safety protection device according to claim 1, characterized in that, The clamping mechanism (3) also includes a square box (31), and the motor (32), transmission rod one (33), transmission rod two (34) and guide rod (35) are all housed or installed inside the square box (31).

4. The injection molding machine nozzle safety protection device according to claim 1, characterized in that, The sliding block (361) and the clamp (362) are components of the fixing assembly (36).

5. The injection molding machine nozzle safety protection device according to claim 2, characterized in that, The quantitative feeding assembly (6) further includes a support plate (64) and a fixing plate (65). The connecting rod (63) slides through the support plate (64), the fixing plate (65) is fixedly connected to the front end of the connecting rod (63), and the L-shaped plate (66) is pivotally connected to the fixing plate (65).

6. The injection molding machine nozzle safety protection device according to claim 2, characterized in that, The quantitative feeding assembly (6) also includes a mounting box (61), and the cylinder (62), connecting rod (63), support plate (64) and fixing plate (65) are all located inside the mounting box (61).

7. The injection molding machine nozzle safety protection device according to claim 1, characterized in that, The device is installed on the injection molding machine body (2); the quantitative feeding component (6) is provided with a feeding end that is connected to the hopper (4) and the conveying pipe (5), and a discharging end that is connected to the feeding port (7) of the injection molding machine body (2).

8. The injection molding machine nozzle safety protection device according to claim 1, characterized in that, The end of the transmission rod (34) is hinged to the sliding block (361).

9. The injection molding machine nozzle safety protection device according to claim 2, characterized in that, The rotating shaft of the L-shaped plate (66) is connected to the connecting rod (67) via a coupling.

10. The injection molding machine nozzle safety protection device according to claim 2, characterized in that, The inner wall of the circular plate (68) is fixed to the outer wall of the connecting rod (67).

Images