Mower mold structure

Abstract

The utility model discloses a mowing machine mold structure. The mowing machine mold structure comprises a fixed mold mechanism, a movable mold mechanism and a guide rod mechanism, a positioning structure is also arranged between the fixed mold mechanism and the movable mold mechanism; the fixed mold mechanism comprises a first mounting plate and a first forming plate, and the first forming plate is provided with a first forming insert; the movable mold mechanism comprises a bottom plate, a second mounting plate and a second forming plate, and the second forming plate is provided with a second forming insert; and the second forming insert is provided with a multi-demolding structure, and the multi-demolding structure comprises a mechanical demolding mechanism and a blowing demolding mechanism. The mechanical demolding mechanism is used for achieving the mechanical demolding effect, the blowing demolding mechanism is used for achieving the gas demolding action, multiple demolding is achieved, a formed mower product is protected, the demolding quality and efficiency are guaranteed, meanwhile, the strength of the mechanical demolding mechanism does not need to be adjusted, the strength adjusting step is reduced, and the labor intensity is reduced. The production efficiency is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of injection molding technology for lawn mowers, in particular to a mold structure for lawn mowers. Background Art

[0002] A lawn mower, also known as a weed cutter, lawn mower, or lawn trimmer, is a mechanical tool used to trim lawns and vegetation. It consists of a cutterhead, engine, wheels, a running mechanism, blades, armrests, and controls. Most of the main components of a lawn mower are manufactured using injection molds.

[0003] The existing molds for making lawn mowers are not convenient to separate the molded product from the mold after production is completed. It is time-consuming, labor-intensive, inefficient, and easily causes damage to the molded product of the lawn mower. In response to the above problems, people invented Patent No.: 202020384379.1, which discloses a mold for making the upper casing of a lawn mower. It includes a top plate and a bottom plate arranged horizontally above and below, a horizontal movable plate is arranged between the top plate and the bottom plate, and a first through hole is vertically opened at the four corners of the upper end of the movable plate. The interiors of the multiple first through holes are slidably sleeved with support rods, and the upper and lower ends of the multiple support rods are respectively fixedly connected to the four corners of the lower end of the top plate and the four corners of the upper end of the bottom plate. A hydraulic rod is fixedly provided at the middle part of the upper end of the bottom plate, and the piston rod end of the hydraulic rod is fixedly connected to the bottom center of the movable plate. A fixed module is fixedly connected to the center of the lower end of the top plate, and a vertical injection molding tube is fixedly connected to the center of the upper end of the top plate. The utility model facilitates separation of the upper casing from the mold after production is complete, saving time, effort, and efficiency while also minimizing damage to the upper casing. However, the mold still has the following problems: It uses a mechanical demolding method to release the molded product, a single demolding method that can lead to incomplete demolding when stuck, affecting demolding efficiency. Furthermore, the mechanical demolding force controllability of the mold is poor, requiring different demolding forces for different molded product thicknesses. Adjusting the force is cumbersome, impacting production efficiency. A large adjustment can cause deformation of the lawn mower molded product, impacting production efficiency. Utility Model Content

[0004] This utility model is aimed at the current technical deficiencies and provides a lawn mower mold structure, aiming to solve the technical problems in the prior art of lawn mower molds such as poor demoulding efficiency and demoulding quality, and cumbersome demoulding adjustment resulting in slow adjustment efficiency.

[0005] The technical solution adopted by the present invention to achieve the above-mentioned purpose is:

[0006] A lawn mower mold structure includes a fixed mold mechanism and a movable mold mechanism, wherein a guide rod mechanism is provided between the fixed mold mechanism and the movable mold mechanism, and the guide rod mechanism is used to ensure the stable movement of the movable mold mechanism; a positioning structure is also provided between the fixed mold mechanism and the movable mold mechanism;

[0007] The fixed mold mechanism includes a first mounting plate and a first forming plate, the first forming plate being provided with a first forming insert; the first mounting plate is also provided with a glue injection assembly, the glue injection assembly being connected and communicating with the first forming insert; the movable mold mechanism includes a bottom plate, a second mounting plate and a second forming plate, the second forming plate being provided with a second forming insert; the second mounting plate is connected to a driving mechanism, thereby controlling the second forming plate to move along a guide rod mechanism toward the first forming plate; the first forming insert and the second forming insert form a forming cavity when the mold is closed;

[0008] The second molding insert is provided with a multiple demoulding structure, and the multiple demoulding structure includes a mechanical demoulding mechanism and an air blowing demoulding mechanism.

[0009] As a further improvement, the second molding insert is provided with a molding groove, the molding groove is provided with a boss, and the molding groove and the boss constitute a second molding cavity; the second mounting plate and the second molding insert are both provided with a through hole, and the mechanical demolding mechanism includes an ejector pin and a spring, the ejector pin is arranged in the through hole, the second molding insert is provided with a step, the ejector pin is provided with a limit block, and the spring is sleeved on the ejector pin and arranged between the step and the limit block.

[0010] As a further improvement, the ejector is further provided with a connecting portion, and the connecting portion is used to be connected to the ejector ejection mechanism of the driving mechanism.

[0011] As a further improvement, the air blowing demoulding mechanism includes two groups of air blowing demoulding components; the air blowing demoulding components are arranged in a mirror-image manner in the second molding insert, and the air blowing demoulding components all include pipes, and the pipes are provided with a plurality of collecting pipes arranged in an array; the collecting pipes are provided with a plurality of through holes arranged in an array.

[0012] As a further improvement, the through holes are all conical structure through holes, the end with a larger diameter of the conical structure through hole is connected to the collecting pipe, and the end with a smaller diameter of the conical structure through hole faces the outer surface of the boss; the pipes are also provided with a main pipe, and the main pipe is provided with an interface.

[0013] As a further improvement, the second molding insert is made by additive manufacturing technology.

[0014] As a further improvement, the guide rod mechanism includes multiple guide rods and multiple guide sleeves, and the multiple guide rods are arranged between the first mounting plate and the base plate; the guide sleeves are fixed on the second mounting plate and are respectively arranged on the guide rods.

[0015] As a further improvement, the positioning structure includes a plurality of positioning posts and a plurality of positioning holes, the positioning posts are arranged on the first molding insert, and the plurality of positioning holes are arranged on the second molding insert.

[0016] The first molding insert is provided with a first molding groove; the first molding groove is provided with a first molding cavity matched with the boss.

[0017] Compared with the prior art, the above one or more technical solutions in the lawn mower mold structure provided by the embodiment of the present invention have at least one of the following technical effects:

[0018] The utility model realizes the mechanical demoulding by setting a mechanical demoulding mechanism, and realizes the gas demoulding action by setting an air blowing demoulding mechanism, thereby realizing multiple demoulding, protecting the molded lawn mower product, ensuring the demoulding quality and efficiency, and at the same time, there is no need to adjust the strength of the mechanical demoulding mechanism, reducing the strength adjustment steps and improving production efficiency; when the mechanical demoulding mechanism fails, the air blowing demoulding mechanism can continue the demoulding action, so that the lawn mower mold structure can continue to be processed and produced, ensuring production efficiency; by adopting a conical structure through hole, the space of the part with a large through hole diameter gradually shrinks along the direction of the small through hole diameter, so that the gas is compressed and a jet impact force is generated, thereby forming a demoulding air film on the surface of the boss, realizing the demoulding of the molded lawn mower, and will not cause deformation of the lawn mower, thereby improving the demoulding quality and efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the following briefly introduces the drawings required for use in the embodiments or descriptions of the prior art. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying any creative labor.

[0020] Figure 1 This is a schematic diagram of the overall structure of the lawn mower mold structure of this embodiment;

[0021] Figure 2 for Figure 1 A is an enlarged schematic diagram. DETAILED DESCRIPTION

[0022] The following description is merely a preferred embodiment of the present invention and does not limit the scope of protection of the present invention.

[0023] For example, see the attached Figures 1 and 2 A lawn mower mold structure 1 includes a fixed mold mechanism 2 and a movable mold mechanism 3. A guide rod mechanism 4 is provided between the fixed mold mechanism 2 and the movable mold mechanism 3. The guide rod mechanism 4 is used to ensure the stable movement of the movable mold mechanism 3. A positioning structure 5 is also provided between the fixed mold mechanism 2 and the movable mold mechanism 3.

[0024] The fixed mold mechanism 2 includes a first mounting plate 20 and a first forming plate 21. The first forming plate 21 is provided with a first forming insert 22. The first mounting plate 20 is also provided with a glue injection assembly 23, which is connected and communicated with the first forming insert 22. The movable mold mechanism 3 includes a base plate 30, a second mounting plate 31, and a second forming plate 32. The second forming plate 32 is provided with a second forming insert 33. The second mounting plate 31 is connected to a driving mechanism to control the second forming plate 32 to move along the guide rod mechanism 4 toward the first forming plate 21. When the first forming insert 22 and the second forming insert 33 are molded together, a forming cavity is formed.

[0025] The second molding insert 33 is provided with a multiple demoulding structure 6 , and the multiple demoulding structure 6 includes a mechanical demoulding mechanism 7 and an air blowing demoulding mechanism 8 .

[0026] The second molding insert 33 is provided with a molding groove 330, and the molding groove 330 is provided with a boss 331. The molding groove 330 and the boss 331 constitute a second molding cavity 332; the second mounting plate 31 and the second molding insert 33 are both provided with a through hole, and the mechanical demoulding mechanism 7 includes a ejector pin 70 and a spring 71. The ejector pin 70 is arranged in the through hole, the second molding insert 33 is provided with a step, the ejector pin 70 is provided with a limit block, and the spring 71 is sleeved on the ejector pin 70 and arranged between the step and the limit block; the ejector pin 70 is also provided with a connecting portion, which is used to connect with the ejection mechanism of the ejector pin 70 of the driving mechanism; the mechanical demoulding mechanism 7 is used to realize the function of mechanical demoulding, cooperate with the air blowing demoulding mechanism 8 to realize multiple demoulding actions, improve demoulding efficiency, and reduce the ejection force of the mechanical demoulding mechanism 7, so as to better prevent the lawn mower product from being deformed due to the large ejection force, thereby ensuring the appearance and quality of the lawn mower product.

[0027] The air blowing demoulding mechanism 8 includes two groups of air blowing demoulding components 80; the air blowing demoulding components 80 are arranged in a mirror-image manner in the second molding insert 33, and the air blowing demoulding components 80 each include a pipe 800, and the pipe 800 is provided with a plurality of array-arranged collecting pipes 801; the collecting pipes 801 are provided with a plurality of array-arranged through holes 802, the pipe 800 is used for the flow of demoulding gas, and the collecting pipe 801 is used for the diversion of demoulding gas. The air blowing demoulding mechanism 8 is used to realize the gas demoulding action, improve the demoulding quality and efficiency, and protect the molded lawn mower product. When the mechanical demoulding mechanism 7 fails, the lawn mower mold structure 1 can continue to be processed and produced to ensure production efficiency.

[0028] The through holes 802 are all conical structure through holes, and the end of the conical structure through hole with a large diameter 802a is connected to the collecting pipe 801, and the end of the conical structure through hole with a small diameter 802b is toward the outer surface of the boss 331. The conical structure through hole is used to make the space of the part with a large diameter 802a of the through hole gradually shrink along the direction of the small diameter 802b of the through hole, so that the gas is compressed and a jet impact force is generated, thereby forming a demoulding air film on the surface of the boss 331, realizing the demoulding of the lawn mower after molding, without causing deformation of the lawn mower, and improving the demoulding quality and efficiency; the pipeline 800 is also provided with a main pipeline 803, and the main pipeline 803 is provided with a connecting port, and the interface is used to connect with external air compressor equipment.

[0029] The second molding insert 33 is manufactured by additive manufacturing technology.

[0030] The guide rod mechanism 4 includes multiple guide rods 40 and multiple guide sleeves 41. The multiple guide rods 40 are arranged between the first mounting plate 20 and the base plate 30; the guide sleeves 41 are fixed on the second mounting plate 31 and are respectively arranged on the guide rods 40. The guide rod 40 mechanism 4 is used to ensure the movement stability of the movable mold mechanism 3.

[0031] The positioning structure 5 includes a plurality of positioning columns 50 and a plurality of positioning holes 51. The positioning columns 50 are arranged on the first molding insert 22, and the plurality of positioning holes 51 are arranged on the second molding insert 33. The positioning structure 5 is used to ensure the positioning fit when the first molding insert 22 and the second molding insert 33 are molded, thereby ensuring the subsequent molding quality of the lawn mower.

[0032] The first molding insert 22 is provided with a first molding groove; the first molding groove is provided with a first molding cavity that cooperates with the boss 331 .

[0033] The utility model realizes the mechanical demoulding by setting a mechanical demoulding mechanism, and realizes the gas demoulding action by setting an air blowing demoulding mechanism, thereby realizing multiple demoulding, protecting the molded lawn mower product, ensuring the demoulding quality and efficiency, and at the same time, there is no need to adjust the strength of the mechanical demoulding mechanism, reducing the strength adjustment steps and improving production efficiency; when the mechanical demoulding mechanism fails, the air blowing demoulding mechanism can continue the demoulding action, so that the lawn mower mold structure can continue to be processed and produced, ensuring production efficiency; by adopting a conical structure through hole, the space of the part with a large through hole diameter gradually shrinks along the direction of the small through hole diameter, so that the gas is compressed and a jet impact force is generated, thereby forming a demoulding air film on the surface of the boss, realizing the demoulding of the molded lawn mower, and will not cause deformation of the lawn mower, thereby improving the demoulding quality and efficiency.

[0034] The present invention is not limited to the above-mentioned embodiments. Other mold structures for lawn mowers obtained by using the same or similar structures or devices as the above-mentioned embodiments of the present invention are within the protection scope of the present invention.

Claims

1. A lawn mower mold structure, characterized by: The lawn mower mold structure includes a fixed mold mechanism and a movable mold mechanism, a guide rod mechanism is provided between the fixed mold mechanism and the movable mold mechanism, and the guide rod mechanism is used to ensure the stable movement of the movable mold mechanism; a positioning structure is also provided between the fixed mold mechanism and the movable mold mechanism; The fixed mold mechanism includes a first mounting plate and a first forming plate, the first forming plate being provided with a first forming insert; the first mounting plate is also provided with a glue injection assembly, the glue injection assembly being connected and communicating with the first forming insert; the movable mold mechanism includes a bottom plate, a second mounting plate and a second forming plate, the second forming plate being provided with a second forming insert; the second mounting plate is connected to a driving mechanism, thereby controlling the second forming plate to move along a guide rod mechanism toward the first forming plate; the first forming insert and the second forming insert form a forming cavity when the mold is closed; The second molding insert is provided with a multiple demoulding structure, and the multiple demoulding structure includes a mechanical demoulding mechanism and an air blowing demoulding mechanism.

2. The lawn mower mold structure according to claim 1, characterized in that: The second molding insert is provided with a molding groove, the molding groove is provided with a boss, and the molding groove and the boss constitute a second molding cavity; the second mounting plate and the second molding insert are both provided with a through hole, and the mechanical demolding mechanism includes an ejector pin and a spring, the ejector pin is arranged in the through hole, the second molding insert is provided with a step, the ejector pin is provided with a limit block, and the spring is sleeved on the ejector pin and arranged between the step and the limit block.

3. The lawn mower mold structure according to claim 2, characterized in that: The ejector pin is further provided with a connecting portion, and the connecting portion is used to be connected to the ejector pin ejecting mechanism of the driving mechanism.

4. The lawn mower mold structure according to claim 3, characterized in that: The air blowing and demoulding mechanism includes two groups of air blowing and demoulding components; the air blowing and demoulding components are arranged in a mirror-image manner in the second molding insert, and the air blowing and demoulding components all include pipes, and the pipes are provided with multiple collecting pipes arranged in an array; the collecting pipes are provided with multiple through holes arranged in an array.

5. The lawn mower mold structure according to claim 4, characterized in that: The through holes are all conical structure through holes, the ends with larger diameter of the conical structure through holes are connected to the collecting pipe, and the ends with smaller diameter of the conical structure through holes face the outer surface of the boss; the pipes are also provided with main pipes, and the main pipes are provided with interfaces.

6. The lawn mower mold structure according to claim 5, characterized in that: The second molding insert is manufactured by additive manufacturing technology.

7. The lawn mower mold structure according to claim 6, characterized in that: The guide rod mechanism includes a plurality of guide rods and a plurality of guide sleeves. The plurality of guide rods are arranged between the first mounting plate and the base plate. The guide sleeves are fixed on the second mounting plate and are respectively arranged on the guide rods.

8. The lawn mower mold structure according to claim 7, characterized in that: The positioning structure includes a plurality of positioning posts and a plurality of positioning holes. The positioning posts are arranged on the first molding insert, and the plurality of positioning holes are arranged on the second molding insert.

9. The lawn mower mold structure according to claim 8, characterized in that: The first molding insert is provided with a first molding groove; the first molding groove is provided with a first molding cavity matched with the boss.

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