Turnover basket injection mold based on oil cylinder ejection and fixed mold pulling plate secondary demolding

Abstract

The invention discloses a turnover basket injection mold based on oil cylinder ejection and fixed mold pulling plate secondary demolding, comprising: a fixed mold plate provided with a sprue; the movable mold plate is arranged opposite to the fixed mold plate, and the movable mold plate can do lifting motion relative to the fixed mold plate; the mold cavity is detachably arranged on one surface, opposite to the movable mold plate, of the fixed mold plate, and a glue injection inlet of the mold cavity is communicated with the pouring gate; the mold core is detachably arranged on one surface, opposite to the fixed mold plate, of the movable mold plate; the oil cylinder ejection outer side demolding mechanism is arranged between the fixed mold plate and the movable mold plate; and the fixed mold pulling plate inner side demolding mechanism is arranged between the fixed mold plate and the movable mold plate. The mold structure is simplified, the overall size of the mold is greatly reduced, and the mold manufacturing efficiency is greatly improved.

Description

Technical Field

[0001] The invention relates to the technical field of injection molds, and in particular to an injection mold for a turnover basket based on oil cylinder ejection and secondary demoulding of a fixed mold pull plate. Background Art

[0002] In modern large supermarkets, agricultural production bases, large warehouses and logistics operation bases, plastic products are often used for storage and logistics turnover of goods. Plastic products have the advantages of being economical, safe and hygienic, lightweight and durable, and green and recyclable. They have been widely used in the storage and turnover of goods in science and technology electronics, hardware, medical treatment, mechanical parts, refrigerated food, aquatic products, logistics, warehousing and other industries.

[0003] Turnover baskets are commonly used plastic products. They are generally large in size, with a small demoulding angle, evenly distributed reinforcing ribs and regularly arranged holes. They are widely used injection molded products in production. The turnover basket is a rectangular plastic part as a whole. It is usually 600mm long, 400mm wide, 150mm high, and 5mm thick. There are 4 L-shaped, 5mm high bosses at the bottom for support and stacking positioning. There are evenly distributed reinforcing ribs and diamond holes around. The turnover basket is made of high-density low-pressure polyethylene (HDPE), which is chemically stable. At room temperature, it is insoluble in any organic solvents and is resistant to corrosion by acids, alkalis and various salts. After the product is formed, the surface is required to be smooth and flawless, and the product should have no obvious shrinkage marks, no flash, no welding marks, no deformation, warping, scratches and other appearance defects.

[0004] Due to the reinforcement ribs and diamond-shaped holes evenly distributed around the turnover basket products, four-sided inverted positions are formed, which brings certain difficulties to the outer demoulding design. The demoulding design of the four-sided inverted positions generally requires the use of a side core-pulling mechanism for demoulding design. Conventional side core-pulling demoulding designs generally include inclined top side core-pulling and slider side core-pulling. Combined with the size of the turnover basket product, the size of the entire mold, and the convenience and rationality of processing and manufacturing, the outer demoulding mechanism of the turnover basket product generally adopts a side slider core-pulling mechanism design. Conventional side slider core-pulling mechanisms generally process and open slideways on the template, use injection molding machines to open molds, and drive the slider to move outward through inclined guide columns to achieve the purpose of core pulling. However, this conventional slider design requires increasing the size of the fixed and movable templates of the mold, and it is time-consuming and labor-intensive to process slideways, wedging parts, and wedging blocks on the fixed and movable templates. At the same time, it will cause the overall size of the mold to be larger, further affecting the manufacturing efficiency and economic benefits of the mold.

[0005] In addition, according to the characteristics of the inner part of the turnover basket product, the demolding design of the inner side, in accordance with general products, often adopts a structural design of direct ejection by ejector pins. However, since the inner wall of the turnover basket product is a vertical surface, the product does not have a draft angle, and the overall height is 150mm, the ejection distance must be at least more than 150mm. If direct ejection by ejector pins is used, there will be a large ejection resistance, resulting in quality defects such as white ejection and ejection breakage on the product, which seriously affects the quality of the product. Secondly, with the ejector pin ejection design, the mold needs to be designed with an ejector pin base plate, panel, and mold feet for support and ejection space, which greatly increases the mold material preparation and the overall size of the mold, and greatly increases the manufacturing cost of the mold. At the same time, the procurement and processing of these structural parts will again extend the mold manufacturing cycle and greatly reduce the mold manufacturing efficiency. Summary of the invention

[0006] In order to overcome the problems of the turnover basket mold in the prior art, such as large overall size, long manufacturing cycle, small product demoulding angle, large demoulding resistance, and difficult ejection, the present invention provides a turnover basket injection mold based on oil cylinder ejection and secondary demoulding of a fixed mold pull plate.

[0007] The technical solution of the present invention is as follows:

[0008] A turnover basket injection mold based on oil cylinder ejection and fixed mold pull plate secondary demoulding, comprising:

[0009] A fixed mold plate, wherein a gate is arranged on the fixed mold plate;

[0010] A movable platen is arranged opposite to the fixed platen, and the movable platen can move up and down relative to the fixed platen;

[0011] A mold cavity is detachably arranged on a side of the fixed mold plate opposite to the movable mold plate, and a glue injection inlet of the mold cavity is connected to the gate;

[0012] A core is detachably arranged on a side of the movable template opposite to the fixed template;

[0013] An oil cylinder ejecting outer demoulding mechanism is arranged between the fixed mold plate and the movable mold plate, and the oil cylinder ejecting outer demoulding mechanism comprises four circumferentially arranged side mold sliders and an oil cylinder ejecting mechanism for driving the four side mold sliders to move synchronously outward or inward;

[0014] The inner demoulding mechanism of the fixed die pull plate is arranged between the fixed die plate and the movable die plate, and the inner demoulding mechanism of the fixed die pull plate comprises a fixed die pull plate and a fixed die pull rod, the fixed die pull plate is slidably sleeved on the outer side of the core, one end of the fixed die pull rod is connected to the fixed die plate, and the other end of the fixed die pull rod is connected to the fixed die pull plate;

[0015] When the mold is closed, the fixed mold pull plate is sleeved on the outer side of the bottom of the core, and the mold cavity, the core, the fixed mold pull plate and the four side mold slide blocks enclose an injection cavity.

[0016] As a preferred solution of the present invention, a plurality of inclined guide columns are arranged between each of the side mold sliders and the fixed mold plate, and a plurality of inclined guide holes matching with the inclined guide columns are opened on each of the side mold sliders, one end of the inclined guide column is connected to the fixed mold plate, and the other end of the inclined guide column is slidably sleeved in the corresponding inclined guide hole.

[0017] As a preferred solution of the present invention, the oil cylinder ejection mechanism comprises two oil cylinders arranged opposite to each other, the two oil cylinders are respectively installed obliquely on the outside of two of the side mold slide blocks arranged opposite to each other, and the piston rods of the two oil cylinders are connected to the fixed mold plate;

[0018] The two side mold sliders installed with the oil cylinder are equipped with synchronous connecting rods at the 45° center position on both sides thereof, and the other two side mold sliders are provided with connecting rod slideways matching with the synchronous connecting rods at the 45° center position on both sides thereof.

[0019] As a preferred solution of the present invention, the fixed template is provided with a piston rod connecting block at the connection with the piston rod of the oil cylinder, the piston rod connecting block is provided with a piston rod slide, and the end of the piston rod of the oil cylinder is provided with a piston rod slider that cooperates with the piston rod slide.

[0020] As a preferred solution of the present invention, the outer upper ends of the four side mold sliders are each provided with a first wedging inclined surface, and the outer lower ends of the four side mold sliders are each provided with a second wedging inclined surface;

[0021] A first wedging groove is provided on one side of the fixed mold plate opposite to the movable mold plate, and is matched with the upper parts of the four side mold sliders when the molds are closed. The four inner walls of the first wedging groove are respectively provided with third wedging inclined surfaces that match with the first wedging inclined surfaces of the four side mold sliders.

[0022] The movable template has a side opposite to the fixed template with a second wedging groove that cooperates with the lower parts of the four side mold sliders when the molds are closed, and the four inner walls of the second wedging groove are respectively provided with fourth wedging inclined surfaces that cooperate with the second wedging inclined surfaces of the four side mold sliders.

[0023] As a preferred solution of the present invention, wear-resistant blocks are provided on both the first wedging inclined surface and the second wedging inclined surface.

[0024] As a preferred solution of the present invention, fifth wedging inclined surfaces are provided on both inner left and right ends of the four side mold sliding blocks.

[0025] As a preferred solution of the present invention, the four side mold sliders each include a slider seat and a slider head detachably arranged on the inner side of the slider seat.

[0026] As a preferred solution of the present invention, the demolding mechanism on the inner side of the fixed die pull plate also includes four linear guide assemblies respectively arranged at the four corners of the fixed die pull plate, the four linear guide assemblies each include a linear guide rod and a guide sleeve, the four guide sleeves are respectively installed at the four corners of the fixed die pull plate, one ends of the four linear guide rods are respectively connected to the four corners of the movable die plate, and the other ends of the four linear guide rods are respectively slidably sleeved in the four guide sleeves.

[0027] As a preferred solution of the present invention, the fixed mold pull rod includes a first pull rod, a second pull rod and a third pull rod arranged between the first pull rod and the second pull rod, one end of the first pull rod away from the third pull rod is connected to the fixed mold plate, and one end of the second pull rod away from the first pull rod is connected to the fixed mold pull plate.

[0028] As a preferred solution of the present invention, a first slide groove is provided inside the first pull rod along its length direction, a second slide groove is provided inside the second pull rod along its length direction, one end of the second pull rod is inserted into the first slide groove and is provided with a nylon plug matching with the first slide groove, and the other end of the second pull rod is inserted into the second slide groove and is provided with a sliding disc matching with the second slide groove.

[0029] As a preferred solution of the present invention, a cooling system is provided in the fixed mold plate, the movable mold plate, the mold cavity, the mold core and the four side mold slide blocks.

[0030] As a preferred solution of the present invention, a plurality of first cooling water channels connected in parallel in a straight row are evenly arranged inside the fixed mold plate and the mold cavity, and the plurality of first cooling water channels are connected by water pipes to form an S-shaped loop cooling system.

[0031] As a preferred embodiment of the present invention, a plurality of cooling water wells are evenly arranged around the inner edge of the core, spacers are arranged in the cooling water wells, a water channel connected to each of the cooling water wells is opened at the bottom of the core, a cooling water inlet pipe connected to one end of the water channel is arranged at one end inside the movable mold plate, and a cooling water outlet pipe connected to the other end of the water channel is arranged at the other end inside the movable mold plate.

[0032] As a preferred solution of the present invention, a second cooling water channel connected in series is arranged inside each of the four side mold sliders.

[0033] Compared with the prior art, the present invention has the following beneficial effects:

[0034] 1. The oil cylinder ejection outer demoulding mechanism of the present invention utilizes four circumferentially arranged side mold sliders and an oil cylinder ejection mechanism that can synchronously drive the four side mold sliders to move outward or inward, thereby realizing the demoulding of the four sides of the outer side of the product when the mold is opened, and effectively solves the problem of demoulding the outer side of the turnover basket product; in addition, the oil cylinder ejection outer demoulding mechanism significantly reduces the template size of the mold, further reduces the material cost, and greatly improves the efficiency of processing and manufacturing;

[0035] 2. The inner demolding mechanism of the fixed mold pull plate of the present invention adopts a fixed mold pull rod and a fixed mold pull plate, and utilizes a secondary mold opening structure design for pulling out the product by a mold opening stroke, thereby abandoning a conventional mold ejection mechanism, so that when the inner side of the turnover basket product is demolded, there will be no quality problems such as ejector whitening, ejection breakage, and ejection deformation; in addition, the innovative structural design of the fixed mold pull rod and the fixed mold pull plate eliminates the need to add ejector panels, bottom plates, mold feet and other components to the entire mold, thereby simplifying the mold structure and greatly reducing the overall size of the mold, while also significantly improving the manufacturing and processing efficiency and demonstrating excellent economic performance. BRIEF DESCRIPTION OF THE DRAWINGS

[0036] In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. 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 creative work.

[0037] Figure 1 It is a structural schematic diagram of a turnover basket injection mold based on oil cylinder ejection and secondary demoulding of a fixed mold pull plate in one embodiment of the present invention;

[0038] Figure 2 It is a cross-sectional view of a turnover basket injection mold based on oil cylinder ejection and secondary demoulding of a fixed mold pull plate in one embodiment of the present invention;

[0039] Figure 3 It is a schematic diagram of the connection between the fixed template, the cavity and the outer demoulding mechanism of the oil cylinder ejection in one embodiment of the present invention;

[0040] Figure 4 It is a schematic diagram of the connection between the fixed template and the cavity in one embodiment of the present invention;

[0041] Figure 5 It is a schematic structural diagram of an outer demoulding mechanism of an oil cylinder ejection in one embodiment of the present invention;

[0042] Figure 6 A schematic diagram of the connection between the movable platen and the core in one embodiment of the present invention;

[0043] Figure 7It is a structural schematic diagram of the demoulding mechanism on the inner side of the fixed mold pulling plate in one embodiment of the present invention;

[0044] Figure 8 A cross-sectional view of a fixed die tie rod in one embodiment of the present invention;

[0045] Fig. 9 Schematic diagram of the structure of the core in one embodiment of the present invention.

[0046] In the figure,

[0047] 1. Fixed mold plate; 101. Gate; 102. First wedge-tightening groove; 1021. Third wedge-tightening slope; 103. First cooling water channel; 2. Moving mold plate; 201. Second wedge-tightening groove; 2011. Fourth wedge-tightening slope; 202. Cooling water inlet pipe; 3. Cavity; 4. Core; 401. Cooling water well; 402. Waterway; 5. Cylinder ejector outer demoulding mechanism; 501. Side mold slider; 5011. Oblique guide hole; 5012. Connecting rod slideway; 5013. First wedge-tightening slope; 5014. Second wedge-tightening slope; 5015. Wear block; 5016. Fifth wedge-tightening slope; 5017. Slider seat; 5018. Slider head; 5019 , the second cooling water channel; 502, the oil cylinder ejection mechanism; 5021, the oil cylinder; 5022, the synchronous connecting rod; 5023, the piston rod connecting block; 5024, the piston rod slide; 5025, the piston rod slider; 503, the inclined guide column; 6, the inner demoulding mechanism of the fixed mold pull plate; 601, the fixed mold pull plate; 602, the fixed mold pull rod; 6021, the first pull rod; 60211, the first slide groove; 6022, the second pull rod; 60221, the second slide groove; 6023, the third pull rod; 60231, the nylon rubber plug; 60232, the sliding disc; 603, the linear guide assembly; 6031, the linear guide rod; 6032, the guide sleeve; 7, the turnover basket product. DETAILED DESCRIPTION

[0048] In order to make the technical problems, technical solutions and beneficial effects to be solved by the present invention more clearly understood, the present invention is further described in detail below in conjunction with the accompanying drawings and embodiments. It should be noted that similar reference numerals and letters represent similar items in the following drawings, so once an item is defined in one drawing, it does not need to be further defined and explained in the subsequent drawings. It is also stated that the embodiments described below are only used to explain the present invention and are not used to limit the present invention.

[0049] It should be noted that the terms "install", "set", "connect", "fix" and the like should be understood in a broad sense, for example, they can be fixedly connected, detachably connected, or integrated; they can be mechanically connected or electrically connected; they can be directly connected, or indirectly connected through an intermediate medium, or they can be the internal connection of two elements or the interaction relationship between two elements, unless otherwise clearly defined. The indicated orientation or position relationship is based on the orientation or position relationship shown in the drawings, or the orientation or position relationship in which the application product is usually placed when in use, or the orientation or position relationship commonly understood by those skilled in the art, or the orientation or position relationship in which the application product is usually placed when in use, which is only for the convenience of describing the present application and simplifying the description, and does not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present application. The terms "first", "second", "third", "fourth" and "fifth" are only used for the purpose of convenience of description, and cannot be understood as indicating or implying relative importance or implicitly indicating the number of technical features. The meaning of "multiple" is two or more, unless otherwise clearly defined. "Several" means one or more than one, unless otherwise clearly defined.

[0050] See also Figures 1 to 9 The present embodiment provides a turnover basket injection mold based on oil cylinder ejection and fixed mold plate secondary demolding, comprising: a fixed mold plate 1, a movable mold plate 2, a cavity 3, a core 4, an oil cylinder ejection outer demolding mechanism 5 and a fixed mold plate inner demolding mechanism 6, a gate 101 is arranged on the fixed mold plate 1; the movable mold plate 2 is arranged opposite to the fixed mold plate 1, and the movable mold plate 2 cooperates with the injection molding machine to perform lifting movement relative to the fixed mold plate 1; the cavity 3 is detachably arranged on a side of the fixed mold plate 1 opposite to the movable mold plate 2, which is convenient for the processing of mold forming parts and the subsequent assembly and maintenance of the mold, and the glue injection inlet of the cavity 3 is connected with the gate 101; the core 4 is detachably arranged on a side of the movable mold plate 2 opposite to the fixed mold plate 1, which is convenient for the processing of mold forming parts and the subsequent assembly and maintenance of the mold; the oil cylinder ejection outer demolding mechanism 5 and the fixed mold plate inner demolding mechanism 6 are both arranged between the fixed mold plate 1 and the movable mold plate 2.

[0051] The outer demoulding mechanism 5 for ejecting the oil cylinder includes four circumferentially arranged side mold sliders 501 and an oil cylinder ejecting mechanism 502 for driving the four side mold sliders 501 to move synchronously outward or inward. The inner demoulding mechanism 6 for the fixed mold pull plate includes a fixed mold pull plate 601 and a fixed mold pull rod 602. The fixed mold pull plate 601 is slidably sleeved on the outer side of the core 4 and is located between the four side mold sliders 501 and the movable mold plate 2. One end of the fixed mold pull rod 602 is connected to the fixed mold plate 1, and the other end of the fixed mold pull rod 602 is connected to the fixed mold pull plate 601.

[0052] When closing the mold, the movable mold plate 2 rises in the direction of the fixed mold plate 1 under the drive of the injection molding machine. As the movable mold plate 2 rises, the oil cylinder ejection mechanism 502 drives the four side mold sliders 501 to move inward synchronously, and at the same time, the movable mold plate 2 also pushes the fixed mold pull plate 601 to rise, thereby causing the fixed mold pull rod 602 to contract as the fixed mold pull plate 601 rises. When the mold closing action is completed, the fixed mold pull plate 601 moves to the outside of the bottom of the core 4, and the cavity 3, the core 4, the fixed mold pull plate 601 and the four side mold sliders 501 are enclosed together to form an injection cavity. At this time, the melt is injected into the injection cavity through the gate 101 and the cavity 3, and the turnover basket product 7 can be made after the melt is cooled.

[0053] When the mold is opened, the movable mold plate 2 is driven by the injection molding machine to descend in a direction away from the fixed mold plate 1. As the movable mold plate 2 descends, the oil cylinder ejection mechanism 502 drives the four side mold sliders 501 to move outward synchronously, and the outer side of the turnover basket product 7 begins to be demolded. When the four side mold sliders 501 move outward to a predetermined safety distance, the first demolding is completed. As the movable mold plate 2 continues to descend, the fixed mold pull rod 602 is stretched to a set distance, thereby driving the fixed mold pull plate 601 to start pulling out the turnover basket product 7 until the turnover basket product 7 is completely removed from the core 4. At this time, the second demolding is completed.

[0054] The oil cylinder ejection outer demoulding mechanism 5 of the present invention utilizes four circumferentially arranged side mold sliders 501 and a oil cylinder ejection mechanism 502 that can synchronously drive the four side mold sliders 501 to move outward or inward, thereby realizing the demoulding of the four outer sides of the product when the mold is opened, and effectively solving the problem of demoulding the outer side of the turnover basket product 7; in addition, the oil cylinder ejection outer demoulding mechanism 5 significantly reduces the template size of the mold, further reduces the material cost, and greatly improves the processing and manufacturing efficiency.

[0055] The inner demolding mechanism 6 of the fixed mold pull plate of the present invention adopts a fixed mold pull rod 602 and a fixed mold pull plate 601, and utilizes a secondary mold opening structure design for pulling out the product by a mold opening stroke, thereby abandoning a conventional mold ejection mechanism, so that when the inner side of the turnover basket product 7 is demolded, there will be no quality problems such as ejection whitening, ejection breakage, and ejection deformation; in addition, the innovative structural design of the fixed mold pull rod 602 and the fixed mold pull plate 601 eliminates the need to add ejector panels, bottom plates, mold feet and other components to the entire mold, thereby simplifying the mold structure and greatly reducing the overall size of the mold, while also significantly improving the manufacturing and processing efficiency and demonstrating excellent economic performance.

[0056] See also Figure 2In one embodiment, considering that the turnover basket product 7 is a single-cavity plastic part with a large and deep molding, the gate 101 adopts a large-gate direct gate design. The gate 101 of this design can directly inject the melt into the bottom of the product through the cavity 3. The melt flows directly from the nozzle into the cavity 3 through the gate 101. This path is the shortest and the flow resistance is small, thereby ensuring a fast feeding speed and a good molding effect. At the same time, due to the small process and resistance, the loss of pressure and heat is also reduced accordingly, and the pressure-maintaining and shrinkage-compensating effect is significantly enhanced. In addition, the gate 101 design also makes the mold structure simpler and easier to manufacture, thereby reducing costs.

[0057] See also Figure 3 , Figure 5 In one embodiment, a plurality of inclined guide posts 503 are arranged between each side mold slider 501 and the fixed mold plate 1, and a plurality of inclined guide holes 5011 are opened on each side mold slider 501 to match the inclined guide posts 503. One end of the inclined guide posts 503 is connected to the fixed mold plate 1, and the other end of the inclined guide posts 503 is slidably sleeved in the corresponding inclined guide holes 5011. The cylinder ejection mechanism 502 includes two oppositely arranged cylinders 5021, which are respectively obliquely installed on the outside of two oppositely arranged side mold sliders 501, and the piston rods of the two cylinders 5021 are connected to the fixed mold plate 1. After the piston rods of the two cylinders 5021 extend outward, the two cylinders 5021 move outward, driving the two side mold sliders 501 installed with the cylinders 5021 to move outward under the guide angle of the inclined guide posts 503. At the same time, in order to ensure that the other two side mold sliders 501 without the oil cylinder 5021 installed can move outward synchronously, a synchronous connecting rod 5022 is installed at the 45° center position on both sides of the two side mold sliders 501 installed with the oil cylinder 5021, and a connecting rod slideway 5012 matched with the synchronous connecting rod 5022 is provided at the 45° center position on both sides of the other two side mold sliders 501. Under the action of the synchronous movement of the synchronous connecting rods 5022 on both sides of the two side mold sliders 501 installed with the oil cylinder 5021, the other two side mold sliders 501 can be driven to move outward synchronously, thereby realizing the demoulding of the four sides of the outer side of the product, solving the problem of demoulding the outer side of the turnover basket product 7.

[0058] The matching design of the above-mentioned inclined guide column 503 and the inclined guide hole 5011 provides precise guidance for the movement of the side mold slider 501, ensuring that the side mold slider 501 can move smoothly and accurately along the predetermined trajectory during the demolding process, avoiding problems such as mold damage or poor product demolding caused by movement deviation. The oil cylinder ejection mechanism 502 realizes the direct drive of the two side mold sliders 501 through two relatively arranged oil cylinders 5021, simplifies the structure of the demolding mechanism, and improves the synchronization and efficiency of the demolding operation. At the same time, the setting of the synchronous connecting rod 5022 further ensures that all side mold sliders 501 can move outward synchronously, thereby realizing the rapid and complete demolding of the four sides of the outer side of the product, which significantly improves production efficiency and product quality.

[0059] Of course, in another embodiment, the cylinder ejection mechanism 502 may also be designed to include four cylinders 5021, and the four cylinders 5021 are respectively installed obliquely on the outside of the four side mold sliders 501, so that each side mold slider 501 can be directly driven by an independent cylinder 5021, thereby realizing synchronous demolding action.

[0060] See also Figure 5 In one embodiment, the fixed die plate 1 is provided with a piston rod connection block 5023 at the connection with the piston rod of the oil cylinder 5021, a piston rod slideway 5024 is provided on the piston rod connection block 5023, and a piston rod slider 5025 matching with the piston rod slideway 5024 is provided at the end of the piston rod of the oil cylinder 5021. The matching design of the piston rod slideway 5024 and the piston rod slider 5025 allows the piston rod of the oil cylinder 5021 to have a certain activity space when it is extended and retracted, thereby preventing the oil cylinder 5021 from being stuck or damaged.

[0061] See also Figures 4 to 6In one embodiment, in order to solve the problem that the side mold slider 501 moves outward under the injection pressure, resulting in defects such as overflow and flying of the product, the outer upper ends of the four side mold sliders 501 are each provided with a first wedging inclined surface 5013, and the outer lower ends of the four side mold sliders 501 are each provided with a second wedging inclined surface 5014. The fixed mold plate 1 is provided with a first wedging groove 102 that matches with the upper parts of the four side mold sliders 501 when the mold is closed on one side of the movable mold plate 2, and the four inner walls of the first wedging groove 102 are respectively provided with third wedging inclined surfaces 1021 that match with the first wedging inclined surfaces 5013 of the four side mold sliders 501. The movable mold plate 2 is provided with a second wedging groove 201 that matches with the lower parts of the four side mold sliders 501 when the mold is closed on one side of the fixed mold plate 1, and the four inner walls of the second wedging groove 201 are respectively provided with fourth wedging inclined surfaces 2011 that match with the second wedging inclined surfaces 5014 of the four side mold sliders 501. When closing the mold, the third wedging bevel 1021 of the fixed mold plate 1 and the fourth wedging bevel 2011 of the movable mold plate 2 wedge the first wedging bevel 5013 and the second wedging bevel 5014 of the four side mold sliders 501 to prevent the side mold sliders 501 from moving backward during the injection molding process, thereby ensuring the quality of the product.

[0062] In addition, wear-resistant blocks 5015 are provided on the first wedging bevel 5013 and the second wedging bevel 5014 to reduce the friction damage to the fixed mold plate 1, the movable mold plate 2 and the side mold slider 501, the movable mold plate 2 caused by wedging, thereby improving the service life of the mold parts.

[0063] See also Figure 5 In one embodiment, the inner left and right ends of the four side mold sliders 501 are each provided with a fifth wedging inclined surface 5016. The fifth wedging inclined surface 5016 is designed to achieve tight fit and wedging between the side mold sliders 501 through the interaction between the inclined surfaces when the side mold sliders 501 are subjected to mold closing pressure during mold closing, thereby reducing the possibility of mold gap and material leakage.

[0064] See also Figure 5 In one embodiment, in order to further improve the processing efficiency of the side mold slider 501 and reduce the cost expenditure of the material of the side mold slider 501, the four side mold sliders 501 all adopt an inlaid split structure design. The side mold slider 501 includes a slider seat 5017 and a slider head 5018 that is detachably arranged on the inner side of the slider seat 5017, so that the side mold slider 501 can be easily adapted to different machine tool processing.

[0065] See also Figure 7In one embodiment, the demolding mechanism 6 on the inner side of the fixed mold platen further includes four linear guide assemblies 603 respectively arranged at the four corners of the fixed mold platen 601. Specifically, the four linear guide assemblies 603 each include a linear guide rod 6031 and a guide sleeve 6032, and the four guide sleeves 6032 are respectively installed at the four corners of the fixed mold platen 601, one end of the four linear guide rods 6031 is respectively connected to the four corners of the movable mold plate 2, and the other ends of the four linear guide rods 6031 are respectively slidably sleeved in the four guide sleeves 6032, forming a stable sliding fit relationship. By introducing four linear guide assemblies 603, the fixed mold platen 601 can move stably and accurately during the demolding process, thereby improving the demolding efficiency of the mold, and at the same time reducing the maintenance cost and production interruption time caused by mold damage.

[0066] See also Figure 8 In one embodiment, the fixed mold pull rod 602 includes a first pull rod 6021, a second pull rod 6022 and a third pull rod 6023 arranged between the first pull rod 6021 and the second pull rod 6022, and the end of the first pull rod 6021 away from the third pull rod 6023 is connected to the fixed mold plate 1, and the end of the second pull rod 6022 away from the first pull rod 6021 is connected to the fixed mold pull plate 601. Among them, a first slide groove 60211 is arranged inside the first pull rod 6021 along its length direction, which is used to accommodate and guide a part of the second pull rod 6022; a second slide groove 60221 is arranged inside the second pull rod 6022 along its length direction, which is used to accommodate and guide a part of the second pull rod 6022; one end of the second pull rod 6022 is inserted into the first slide groove 60211 and is provided with a nylon plug 60231 that matches the first slide groove 60211. The nylon plug 60231 not only provides good sliding performance, but also has certain elasticity and wear resistance, which helps to reduce friction and wear; the other end of the second pull rod 6022 is inserted into the second slide groove 60221 and is provided with a sliding disc 60232 that matches the second slide groove 60221. The sliding disc 60232 enables the second pull rod 6022 to slide smoothly and smoothly in the second slide groove 60221 while maintaining good positioning accuracy. The fixed mold tie rod 602 adopts a multi-section tie rod structure and cleverly combines the slide groove and the matching parts to achieve a more flexible and stable mold opening and closing operation.

[0067] In one embodiment, in order to effectively control the warping and deformation defects of the product, reduce the cooling time of the product, and improve the production efficiency of the product, the present invention is provided with a cooling system in the fixed mold plate 1, the movable mold plate 2, the cavity 3, the core 4 and the four side mold sliders 501.

[0068] See also Figure 4Specifically, multiple first cooling water channels 103 connected in parallel and in parallel are evenly arranged inside the fixed mold plate 1 and the mold cavity 3. The multiple first cooling water channels 103 are interconnected through water pipes to form an S-shaped loop cooling system. The cooling water flows in from one side of the fixed mold plate 1, passes through the mold cavity 3, and finally flows out from the other side of the fixed mold plate 1. This parallel and in-line cooling water channel design not only ensures the cooling effect, but also makes the water channel processing process simple and convenient.

[0069] See also Figure 6 , Fig. 9 Specifically, since the core 4 on the movable mold plate 2 is a high core, the present invention adopts a cooling system design of a high core using a cooling well spacer. A plurality of cooling water wells 401 are evenly arranged around the inner edge of the core 4, and spacers are arranged in the cooling water wells 401. At the same time, a water channel 402 connected to each cooling water well 401 is opened at the bottom of the core 4. In addition, a cooling water inlet pipe 202 connected to one end of the water channel 402 is arranged at one end inside the movable mold plate 2, and a cooling water outlet pipe connected to the other end of the water channel 402 is arranged at the other end inside the movable mold plate 2 to form a loop.

[0070] See also Figure 5 Specifically, the four side mold sliders 501 are each provided with a second cooling water channel 5019 in series to improve the production efficiency of the product and ensure the quality of the product.

[0071] In one embodiment, the manufacturing and processing of the fixed mold plate 1, the movable mold plate 2 and the side mold slider 501 are all completed by precision CNC machine tools, which further ensures the manufacturing accuracy of the mold, while the manufacturing and processing efficiency is significantly improved, highlighting the economic performance.

[0072] It should be understood that those skilled in the art can make improvements or changes based on the above description, and all these improvements and changes should fall within the scope of protection of the appended claims of the present invention.

[0073] The above is an exemplary description of the present invention in conjunction with the accompanying drawings. It is obvious that the implementation of the present invention is not limited to the above-mentioned method. As long as various improvements are made by adopting the method concept and technical solution of the present invention, or the concept and technical solution of the present invention are directly applied to other occasions without improvement, they are all within the protection scope of the present invention.

Claims

1. A turnover basket injection mold based on oil cylinder ejection and fixed mold pull plate secondary demoulding, characterized in that: include: A fixed mold plate, wherein a gate is provided on the fixed mold plate; A movable template is arranged opposite to the fixed template, and the movable template can move up and down relative to the fixed template; A mold cavity is detachably arranged on a side of the fixed mold plate opposite to the movable mold plate, and a glue injection inlet of the mold cavity is connected to the gate; A core is detachably arranged on a side of the movable template opposite to the fixed template; An oil cylinder ejecting outer demoulding mechanism is arranged between the fixed mold plate and the movable mold plate, and the oil cylinder ejecting outer demoulding mechanism comprises four circumferentially arranged side mold sliders and an oil cylinder ejecting mechanism for driving the four side mold sliders to move synchronously outward or inward; The inner demoulding mechanism of the fixed die pull plate is arranged between the fixed die plate and the movable die plate, and the inner demoulding mechanism of the fixed die pull plate comprises a fixed die pull plate and a fixed die pull rod, the fixed die pull plate is slidably sleeved on the outer side of the core, one end of the fixed die pull rod is connected to the fixed die plate, and the other end of the fixed die pull rod is connected to the fixed die pull plate; When the mold is closed, the mold cavity, the mold core, the fixed mold pull plate and the four side mold slide blocks enclose an injection cavity.

2. The turnover basket injection mold based on oil cylinder ejection and fixed mold pull plate secondary demoulding according to claim 1 is characterized in that: A plurality of inclined guide columns are arranged between each of the side mold sliders and the fixed mold plate, and a plurality of inclined guide holes matching with the inclined guide columns are opened on each of the side mold sliders. One end of the inclined guide column is connected to the fixed mold plate, and the other end of the inclined guide column is slidably sleeved in the corresponding inclined guide hole.

3. The turnover basket injection mold based on oil cylinder ejection and fixed mold pull plate secondary demoulding according to claim 2 is characterized in that: The oil cylinder ejection mechanism comprises two oil cylinders arranged opposite to each other, the two oil cylinders are respectively installed obliquely on the outside of two of the side mold slide blocks arranged opposite to each other, and the piston rods of the two oil cylinders are connected to the fixed mold plate; The two side mold sliders installed with the oil cylinder are equipped with synchronous connecting rods at the 45° center position on both sides thereof, and the other two side mold sliders are provided with connecting rod slideways matching with the synchronous connecting rods at the 45° center position on both sides thereof.

4. The turnover basket injection mold based on oil cylinder ejection and fixed mold pull plate secondary demoulding according to claim 1 is characterized in that: The outer upper ends of the four side mold sliders are each provided with a first wedging inclined surface, and the outer lower ends of the four side mold sliders are each provided with a second wedging inclined surface; A first wedging groove is provided on one side of the fixed mold plate opposite to the movable mold plate, and is matched with the upper parts of the four side mold sliders when the molds are closed. The four inner walls of the first wedging groove are respectively provided with third wedging inclined surfaces that match with the first wedging inclined surfaces of the four side mold sliders. The movable template has a side opposite to the fixed template with a second wedging groove that cooperates with the lower parts of the four side mold sliders when the molds are closed, and the four inner walls of the second wedging groove are respectively provided with fourth wedging inclined surfaces that cooperate with the second wedging inclined surfaces of the four side mold sliders.

5. The turnover basket injection mold based on oil cylinder ejection and fixed mold pull plate secondary demoulding according to claim 4 is characterized in that: Wear-resistant blocks are arranged on the first wedging inclined surface and the second wedging inclined surface.

6. The turnover basket injection mold based on oil cylinder ejection and fixed mold pull plate secondary demoulding according to claim 1 is characterized in that: The inner left and right ends of the four side mold sliding blocks are both provided with fifth wedging inclined surfaces.

7. The turnover basket injection mold based on oil cylinder ejection and fixed mold pull plate secondary demoulding according to claim 1 is characterized in that: The four side mold sliders each include a slider seat and a slider head detachably arranged on the inner side of the slider seat.

8. The turnover basket injection mold based on oil cylinder ejection and fixed mold pull plate secondary demoulding according to claim 1 is characterized in that: The demolding mechanism on the inner side of the fixed die pull plate also includes four linear guide assemblies respectively arranged at the four corners of the fixed die pull plate, and the four linear guide assemblies each include a linear guide rod and a guide sleeve, and the four guide sleeves are respectively installed at the four corners of the fixed die pull plate, one end of the four linear guide rods are respectively connected to the four corners of the movable die plate, and the other ends of the four linear guide rods are respectively slidably sleeved in the four guide sleeves.

9. The turnover basket injection mold based on oil cylinder ejection and fixed mold pull plate secondary demoulding according to claim 1, characterized in that: The fixed mold pull rod includes a first pull rod, a second pull rod and a third pull rod arranged between the first pull rod and the second pull rod, the end of the first pull rod away from the third pull rod is connected to the fixed mold plate, and the end of the second pull rod away from the first pull rod is connected to the fixed mold pull plate.

10. The turnover basket injection mold based on oil cylinder ejection and fixed mold pull plate secondary demoulding according to claim 1, characterized in that: The fixed mold plate, the movable mold plate, the mold cavity, the mold core and the four side mold slide blocks are all provided with cooling systems.

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