Floating blow molding mold, production control method of floating body and floating body

Abstract

This invention discloses a blow molding mold for a floating body, a method for controlling the production of a floating body, and a floating body for floating photovoltaic power generation. The blow molding mold for the floating body includes a top mold and a bottom mold that are fitted together. The top mold includes multiple top mold segments, each with a recessed top cavity. Two top mold segments are detachably connected to allow corresponding top cavities to communicate. The bottom mold includes multiple bottom mold segments, each with a recessed bottom cavity. Two bottom mold segments are detachably connected to allow corresponding bottom cavities to communicate. The top mold and the bottom mold are fitted together, and the top cavity and the bottom cavity constitute a molding cavity. The molding cavity is used to blow mold a floating body, which has a generally rectangular parallelepiped structure. The top cavity is fitted to the upper half of the floating body, and the bottom cavity is fitted to the lower half of the floating body. When at least one top mold segment in the top mold and at least one bottom mold segment in the bottom mold are replaced, the replaced top mold and bottom mold are fitted together, causing the floating body formed by blow molding of the blank injected into the molding cavity to change.

Description

Technical Field

[0001] This invention relates to the technical field of blow molding molds, and particularly to a floating blow molding mold, a method for controlling the production of floating bodies, and a floating body for floating photovoltaic power generation. Background Technology

[0002] Solar energy is a clean energy source. Using photovoltaic (PV) power plants to directly convert solar energy into electricity is a highly efficient way to utilize solar energy. PV power plants can be built on land and water. However, onshore PV power plants typically require a large area, which is a significant limitation, especially in economically developed regions where land resources are scarce. Floating PV refers to building PV power plants on idle water surfaces. Floating PV power plants have many advantages, such as not occupying land resources, reducing water evaporation, and avoiding algae growth, and have broad development prospects.

[0003] Floats made of polyethylene are widely used in floating photovoltaic and water engineering. Traditional float production molds are all one mold for a single shape and specification of float product. When it is necessary to produce floats of different specifications or shapes, the entire set of molds must be replaced. This results in high mold manufacturing costs, time-consuming replacement, and affects the improvement of production efficiency, making it difficult to quickly respond to the market's demand for diversified floats. Summary of the Invention

[0004] The purpose of this invention is to provide a floating blow molding mold, a floating body production control method, and a floating body for floating photovoltaic power generation.

[0005] A first aspect of the present invention provides a blow molding die for a floating body, comprising a top mold and a bottom mold that are fitted together relative to each other. The top mold comprises multiple top mold segments, each top mold segment having a recessed top cavity, and two top mold segments are detachably connected to allow corresponding top cavities to communicate. The bottom mold comprises multiple bottom mold segments, each bottom mold segment having a recessed bottom cavity, and two bottom mold segments are detachably connected to allow corresponding bottom cavities to communicate. The top mold and the bottom mold are fitted together, and the top and bottom cavities constitute a molding cavity. The molding cavity is used to blow mold a floating body, the floating body having a generally cuboid structure. The top cavity is fitted to the upper half of the floating body, and the bottom cavity is fitted to the lower half of the floating body. When at least one top mold segment of the top mold is replaced, and correspondingly at least one bottom mold segment of the bottom mold is replaced, the replaced top mold and bottom mold are fitted together, causing a change in the floating body formed by blow molding from the blank injected into the molding cavity.

[0006] Further, the top mold section includes a top base and a top mold head, the top mold head being disposed at both ends of the top base and detachably connected to the top base. The top base has a recessed first cavity, and the top mold head has a recessed second cavity, the first cavity communicating with the second cavity. The bottom mold includes a bottom base and a bottom mold head, the bottom mold head being disposed at both ends of the bottom base and detachably connected to the bottom base. The bottom base has a recessed third cavity, and the bottom mold head has a recessed fourth cavity, the third cavity communicating with the fourth cavity. The top mold and the bottom mold are fastened together. The first cavity, second cavity, third cavity, and fourth cavity together constitute a molding cavity; wherein, the first type of float includes a float body and a connecting block integrally connected to both ends of the float body; the first cavity is adapted to the upper half of the float body, the second cavity is adapted to the upper half of the connecting block; the third cavity is adapted to the lower half of the float body, and the fourth cavity is adapted to the lower half of the connecting block; when the connecting block has a pull lug, the pull lug can be achieved by replacing the top mold head and the bottom mold head.

[0007] Furthermore, the top base has a first recessed area at each end, the top or side surface of the first recessed area has a protruding first positioning block, and the bottom or side surface of the top mold head has a recessed first positioning groove. The first positioning groove is adapted to the first positioning block to install the top mold head in the first recessed area, so that the first cavity and the second cavity are connected. The bottom base has a second recessed area at each end, the top or side surface of the second recessed area has a protruding second positioning block, and the bottom or side surface of the bottom mold head has a recessed second positioning groove. The second positioning groove is adapted to the second positioning block to install the bottom mold head in the second recessed area, so that the third cavity and the fourth cavity are connected.

[0008] Further, the top mold includes a first top mold section and a second top mold section. The first top mold section has a recessed first top cavity, and the second top mold section has a recessed second top cavity. The first and second top mold sections are connected on the side by a threaded connector, and their end faces are in contact, allowing the first and second top cavities to communicate. The bottom mold includes a first bottom mold section and a second bottom mold section. The first bottom mold section has a recessed first bottom cavity, and the second bottom mold section has a recessed second bottom cavity. The first and second bottom mold sections are connected on the side by a threaded connector, and their end faces are in contact, allowing the first and second top cavities to communicate. A bottom cavity is connected to a second bottom cavity; the top mold is engaged with the bottom mold, and the first top cavity, the second top cavity, the first bottom cavity, and the second bottom cavity constitute the molding cavity; wherein, the second type of float includes a first section float and a second section float connected to the first section float as one piece, the first top cavity and the second top cavity are respectively adapted to the upper half of the first section float and the second section float, and the first bottom cavity and the second bottom cavity are respectively adapted to the lower half of the first section float and the second section float; when one of the first section top mold and the second section top mold is replaced, the blow-molded second type of float can have different numbers of pull ears, different pull ear spacing, and / or different length dimensions of the float.

[0009] Furthermore, one of the first and second top molds has a recessed groove and a mounting hole on its side. The mounting hole communicates with the groove, and the extension direction of the mounting hole and the groove is parallel to the extension direction of the top cavity. The other of the first and second top molds has a threaded hole on its side. The threaded hole is adapted to the mounting hole to enable the connection of the first and second top molds through a threaded connector. The groove provides assembly space for installing the threaded connector.

[0010] Furthermore, the top surface of the first section of the top mold has a recessed first positioning groove, the extension direction of which is parallel to the extension direction of the top cavity; the top surface of the second section of the top mold has a recessed second positioning groove, which is adapted to the first positioning groove and communicates with the first positioning groove for installing a positioning key.

[0011] Furthermore, the top mold also includes a third top mold section, which is located between the first and second top mold sections, and is detachably connected to both the first and second top mold sections. The third top mold section has a recessed third top cavity, the two ends of which are connected to the first and second top cavities, respectively. The bottom mold also includes a third bottom mold section, which is located between the first and second bottom mold sections, and is detachably connected to both the first and second bottom mold sections. The third bottom mold section has a recessed third bottom cavity, the two ends of which are connected to the first and second bottom cavities, respectively.

[0012] Furthermore, both the third top mold and the third bottom mold comprise multiple molds of different lengths. By replacing the third top mold and the third bottom mold, the length of the blow-molded third type of float can be changed.

[0013] A second aspect of the present invention provides a method for controlling the production of a float, based on the aforementioned float blow molding die, the method comprising: Mold installation: Select the matching float blow molding mold according to the specifications of the float to be produced, and install the float blow molding mold on the connecting back plate; Mixing and pretreatment: HDPE raw materials and modified materials are stirred and mixed to obtain raw material particles, wherein the moisture content of the raw material particles is ≤0.1%; Melting and plasticizing: The pre-treated raw material particles are fed into a screw conveyor. The heating temperature and screw speed are adjusted according to the specifications of the float to be produced, so that the raw material particles are melted and plasticized to form a molten billet. Billet injection: The molten billet is injected into the forming cavity of the floating body blow molding die; Cooling and shaping: Gas at a set pressure is introduced into the air hole of the float blow molding mold, and cooling water at a set temperature is introduced into the water hole of the float blow molding mold. The preset cooling time is maintained to allow the blank in the float blow molding mold to cool and shape, thereby obtaining a blow-molded float.

[0014] Furthermore, the method also includes: When it is necessary to switch to producing a different specification of float, shut down the blow molding machine, disassemble one of the top mold sections of the current top mold, and correspondingly disassemble one of the bottom mold sections of the current bottom mold. The new top and bottom mold sections are installed on the connecting back plate, and the mixing pretreatment, melting and plasticizing, billet injection and cooling and shaping are repeated to achieve the diversity of production of floating body products.

[0015] A third aspect of the present invention provides a floating body for floating photovoltaic power generation, which is prepared based on the aforementioned production control method.

[0016] The above-described technical solution of the present invention has the following beneficial technical effects: In this embodiment of the invention, by replacing one of the multiple top mold sections and the corresponding one of the multiple bottom mold sections, floats of different specifications can be produced without replacing the entire set of molds, thus reducing mold manufacturing costs. Furthermore, during the production process, matching top and bottom mold sections are selected according to the specifications of the float to be produced and installed on the back plate of the blow molding machine. If a different float needs to be produced, only one of the top and bottom mold sections needs to be replaced. This allows for the rapid installation of a new top and bottom mold section on the back plate, while the other top and bottom mold sections remain unchanged, shortening the replacement process time and improving production efficiency. After the replaced top and bottom molds are fastened together, the blank injected into the molding cavity is blow molded, resulting in floats with varying specifications or dimensions, meeting the market demand for diverse floats. Attached Figure Description

[0017] Figure 1 This is a schematic diagram of the structure of a floating array for photovoltaic power generation on water according to the first embodiment of the present invention; Figure 2 This is a schematic perspective view of the top mold structure according to the second embodiment of the present invention; Figure 3 yes Figure 2 Enlarged view of point A in the image; Figure 4 This is a schematic diagram of the top substrate structure according to the third embodiment of the present invention; Figure 5 This is a schematic perspective view of the bottom mold according to the fourth embodiment of the present invention; Figure 6 yes Figure 5 Enlarged view at point B in the image; Figure 7 This is a schematic perspective view of the base structure according to the fifth embodiment of the present invention; Figure 8 This is a schematic perspective view of the top mold structure according to the sixth embodiment of the present invention; Figure 9 yes Figure 8 Enlarged view at point C; Figure 10 This is a schematic perspective view of the bottom mold according to the seventh embodiment of the present invention; Figure 11 yes Figure 10 Enlarged view at point D in the image; Figure 12 This is a schematic perspective view of the structure of the floating blow molding die according to the eighth embodiment of the present invention; Figure 13 This is a schematic diagram of the structure of a float provided according to an embodiment of the present invention; Figure 14 This is a schematic diagram of another type of float provided according to an embodiment of the present invention; Figure 15 This is a schematic perspective view of the structure of a floating blow molding die according to the ninth embodiment of the present invention; Figure 16 This is a schematic perspective view of the structure of a floating blow molding die according to the tenth embodiment of the present invention; Figure 17 This is a schematic perspective view of the top mold according to the eleventh embodiment of the present invention; Figure 18 yes Figure 17 A magnified schematic diagram of the structure at point E in the diagram; Figure 19 This is a schematic perspective view of the bottom mold according to the twelfth embodiment of the present invention; Figure 20 yes Figure 19 A magnified schematic diagram of the local structure at point F; Figure 21 This is a schematic perspective view of the top mold according to the thirteenth embodiment of the present invention; Figure 22 This is a schematic perspective view of the bottom mold according to the fourteenth embodiment of the present invention; Figure 23 This is a schematic diagram of the structure of the top mold according to the fifteenth embodiment of the present invention; Figure 24 This is a schematic diagram of the bottom mold according to the sixteenth embodiment of the present invention; Figure 25 This is a schematic diagram of the top mold according to the seventeenth embodiment of the present invention; Figure 26 This is a schematic diagram of the bottom mold according to the eighteenth embodiment of the present invention; Figure 27 This is a schematic diagram of the top mold according to the nineteenth embodiment of the present invention; Figure 28 This is a schematic diagram of the bottom mold according to the twentieth embodiment of the present invention; Figure 29 This is a flowchart of a production control method for a floating body according to the twenty-first embodiment of the present invention; Figure 30 This is a schematic diagram of the structure of a blow molding machine according to the twenty-second embodiment of the present invention; Figure label: 10. Top mold; 11. Top base; 111. First cavity; 112. First recessed area; 113. First positioning block; 114. First cutting surface; 115. First parting surface; 116. First cutting edge structure; 12. Top mold head; 121. Second cavity; 122. Fifth cavity; 123. Sixth cavity; 13. Protrusion; 14. Strip area; 15. First boss; 16. First insert block; 17. Second 20. Slot; 21. Bottom mold; 21. Bottom base; 211. Third cavity; 212. Second recessed area; 213. Second positioning block; 214. Second cutting surface; 215. Second parting surface; 216. Second cutting edge structure; 22. Bottom mold head; 221. Fourth cavity; 222. Seventh cavity; 223. Eighth cavity; 23. Second boss; 24. Third boss; 26. First slot; 27. Second insert block; 31. Float body; 32. Connecting block; 33. Main float; 34. First type of transverse float; 35. Second type of transverse float; 36. Transition float; 37. First type of longitudinal connecting float; 38. First type of longitudinal floating body; 39. Second type of longitudinal connecting float; 40. Second type of longitudinal floating body; 50. Top mold; 51. First top mold section; 52. Second top mold section; 53. First top cavity; 54. Second top cavity; 55. Hole / groove; 56. Mounting hole; 57. First positioning groove; 58. Second positioning groove; 59. Third top mold section; 60. Bottom mold; 61. First bottom mold section; 62. Second bottom mold section; 63. First bottom cavity; 64. Second bottom cavity; 65. Third positioning groove; 66. Fourth positioning groove; 67. Third bottom mold section; 71. Insert block; 72. Slot; 73. Boss; 74. Strip area; 511. First top mold; 521. Second top mold; 611. First bottom mold; 621. Second bottom mold; 512. First top mold; 522. Second top mold; 612. First bottom mold; 622. Second bottom mold; 91. Material cylinder; 92. Screw conveyor; 93. Storage cylinder; 94. First back plate; 95. Second back plate. Detailed Implementation

[0018] To make the objectives, technical solutions, and advantages of this invention clearer, the invention will be further described in detail below with reference to specific embodiments and the accompanying drawings. It should be understood that these descriptions are merely exemplary and not intended to limit the scope of the invention. Furthermore, descriptions of well-known structures and techniques are omitted in the following description to avoid unnecessarily obscuring the concept of the invention. In this document, terms such as first, second, and third are used only to distinguish one feature from another and are not intended to require or imply any order or association between these features.

[0019] Blow molding molds are tools used to manufacture blow-molded plastic products. Blow molding is a plastic processing method in which plastic granules are heated and melted and injected into a mold. Then, air pressure is used to blow the plastic into shape, and finally the desired plastic product is obtained. Blow molding molds can be made of metal materials, such as aluminum alloy or stainless steel.

[0020] refer to Figure 1 A floating array for floating photovoltaic power generation includes a main float 33, a transverse channel, and a longitudinal channel. The main floats 33 are arranged at intervals along a first direction and a second direction, respectively, and each main float is used to carry two sets of photovoltaic modules arranged along the first direction. The transverse channels are arranged at intervals along the first direction, and each transverse channel includes multiple transverse floats connected to each other in sequence along the second direction, and the transverse floats are connected to the main floats. The longitudinal channels are arranged at intervals along the second direction, and the longitudinal channels are connected to the transverse channels. Each longitudinal channel includes multiple longitudinal floats arranged at intervals along the first direction and connecting rods. The connecting rods extend along the first direction and are connected to the upper surfaces of the multiple longitudinal floats to connect the multiple longitudinal floats into a single structure. The lateral float may include a first type of inter-lateral float 34, a second type of inter-lateral float 35, and a transition float 36. The length of the first type of inter-lateral float 34 is greater than that of the second type of inter-lateral float 35, and the first type of inter-lateral float 34 has 8 lugs, of which 4 are at the top corners and 4 are on the sides. The second type of inter-lateral float 35 has 6 lugs, of which 4 are at the top corners and 2 are on the sides. The longitudinal channel includes a longitudinal boundary channel and a longitudinal intermediate channel. The width of the longitudinal intermediate channel is greater than that of the longitudinal boundary channel. The longitudinal boundary channel includes a first type of longitudinal connecting float 37 with a pull lug and a first type of longitudinal floating float 38 without a pull lug. The longitudinal intermediate channel includes a second type of longitudinal connecting float 39 with a pull lug and a second type of longitudinal floating float 40 without a pull lug. The length of the first type of longitudinal connecting float 37 is greater than that of the second type of longitudinal connecting float 39. Correspondingly, the length of the first type of longitudinal floating float 38 is greater than that of the second type of longitudinal floating float 40. Therefore, the shape and size of both the transverse and longitudinal floats are diverse, and the specifications of the floats are varied.

[0021] Currently, in related technologies, the production molds for floats are all one mold corresponding to a single shape and specification of float products. When it is necessary to produce floats of different specifications or shapes, the entire set of molds needs to be replaced. This results in high mold manufacturing costs, time-consuming replacement, and affects the improvement of production efficiency, making it difficult to quickly respond to the market's demand for diversified floats.

[0022] Therefore, embodiments of the present invention provide a floating blow molding die, with reference to... Figures 2-28The system includes a top mold and a bottom mold that fit together. The top mold includes multiple top mold segments, each with a recessed top cavity. Two top mold segments are detachably connected to allow corresponding top cavities to communicate. The bottom mold includes multiple bottom mold segments, each with a recessed bottom cavity. Two bottom mold segments are detachably connected to allow corresponding bottom cavities to communicate. The top mold and the bottom mold are engaged, and the top and bottom cavities form a molding cavity. The molding cavity is used to blow-mold a float, which has a generally rectangular parallelepiped structure. The top cavity is adapted to the upper half of the float, and the bottom cavity is adapted to the lower half of the float. When at least one top mold segment is replaced, and at least one bottom mold segment is replaced accordingly, the replaced top mold and bottom mold are engaged, causing the float formed by blow molding of the blank injected into the molding cavity to change.

[0023] Specifically, the detachable connection between two top mold sections can be achieved through threaded connections or snap-fit ​​connections, and similarly, the connection between two adjacent bottom mold sections can also be detachable. Each top mold section can be configured in multiple specifications, with each specification having a different shape or size of its top cavity. Similarly, each bottom mold section can be configured in multiple specifications, with each specification having a different shape or size of its bottom cavity. Therefore, by replacing different specifications of top and bottom mold sections, different specifications of floats can be produced. For example, by replacing one of multiple top mold sections and the corresponding one of multiple bottom mold sections, different specifications of floats can be produced without replacing the entire mold set, thus reducing mold costs. The manufacturing cost is reduced; and during the production process of the float, the matching top mold section and bottom mold section are selected according to the specifications of the float to be produced, and the matching top mold section and bottom mold section are installed on the back plate of the blow molding machine. If a different float needs to be produced, one of the top mold section and bottom mold section can be replaced. This allows for the quick installation of a new top mold section and bottom mold section on the back plate, while the other top mold section and bottom mold section remain unchanged. This shortens the replacement process time and helps improve production efficiency. After the replaced top mold and bottom mold are snapped together, the blank injected into the molding cavity is blow molded, and the resulting float changes in specifications or dimensions, which can meet the market demand for diversified floats.

[0024] refer to Figures 2-12The top mold includes a top base 11 and a top mold head 12. The top mold head 12 is located at both ends of the top base and is detachably connected to the top base 11. The top base 11 has a recessed first cavity 111, and the top mold head 12 has a recessed second cavity 121. The first cavity 111 and the second cavity 121 communicate with each other. The bottom mold includes a bottom base 21 and a bottom mold head 22. The bottom mold head 22 is located at both ends of the bottom base 21 and is detachably connected to the bottom base 21. The bottom base 21 has a recessed third cavity 211, and the bottom mold head 22 has a recessed fourth cavity 221. The third cavity 211 and the fourth cavity 221 communicate with each other. The mold and the bottom mold are engaged, and the first cavity 111, the second cavity 121, the third cavity 211 and the fourth cavity 221 constitute a molding cavity; wherein, the first type of float includes a float body 31 and a connecting block 32 integrally connected to both ends of the float body 31; the first cavity 111 is adapted to the upper half of the float body, the second cavity 121 is adapted to the upper half of the connecting block 32; the third cavity 211 is adapted to the lower half of the float body 31, and the fourth cavity 221 is adapted to the lower half of the connecting block 32; when the connecting block has a pull lug, by changing the top mold head and the bottom mold head, the blow-molded first type of float can be equipped with a pull lug.

[0025] Specifically, the top mold head 12 is detachably connected to the top base 11. The top mold head 12 can be configured as a top mold replacement part, that is, the top mold head 12 is replaceable. The shape of the second cavity 121 of each top mold head 12 is different. By installing different top mold heads 12 on the top base 11, the shape of the second cavity 121 can be changed, while the shape of the first cavity 111 remains unchanged. Similarly, by installing different bottom mold heads 22 on the bottom base 21, the shape of the fourth cavity 221 can be changed accordingly, while the shape of the third cavity 211 remains unchanged. When producing a float using the float blow molding mold provided in this embodiment of the invention, the float is, for example, a roughly rectangular parallelepiped. The structure includes a float body 31 and connecting blocks 32 integrally connected to both ends of the float body 31. For example, the connecting blocks 32 have pull ears at the top corners, which protrude outwards; or the connecting blocks 32 do not have pull ears at the top corners. Therefore, various floats can be produced by changing the top mold head 12 and the bottom mold head 22. The base of the mold can remain unchanged, without the need to replace the entire mold, which can reduce the manufacturing cost of the mold. Furthermore, during the production of the float, the base of the mold can be installed on the back plate of the blow molding machine. When producing different floats, the mold head can be replaced. This allows for the quick installation of another mold head onto the base, thereby shortening the replacement time and improving production efficiency.

[0026] In some embodiments, the top base 11 is provided with a first recessed area 112 at both ends. The top surface or side surface of the first recessed area 112 has a protruding first positioning block 113. The bottom surface or side surface of the top mold head 12 has a recessed first positioning groove. The first positioning groove is adapted to the first positioning block 113 so as to install the top mold head 12 in the first recessed area 112, so that the first cavity 111 is connected to the second cavity 121. The bottom base 21 has a second recessed area 212 at each end. The top or side surface of the second recessed area 212 has a protruding second positioning block 213. The bottom or side surface of the bottom mold head 22 has a recessed second positioning groove. The second positioning groove is adapted to the second positioning block 213 so as to install the bottom mold head 22 in the second recessed area 212, so that the third cavity 211 and the fourth cavity 221 are connected.

[0027] Specifically, the extension direction of the positioning block can be set perpendicular to the length direction of the first cavity 111. The mold head can be inserted into the recessed area along the extension direction of the positioning block. Through reasonable design of the positioning block position, the side wall of the mold head can fit with the side of the recessed area, and the bottom surface of the mold head can fit with the top surface of the recessed area, so that the first cavity 111 and the second cavity 121 are connected and aligned, and the gap between the first cavity 111 and the second cavity 121 is minimized. Similarly, the gap between the third cavity 211 and the fourth cavity 221 can also be minimized, so as not to cause uneven wall thickness of the produced float. In order to reduce the manufacturing cost of the mold and facilitate the management and storage of the mold, the top mold heads 12 at both ends can be made identical. During installation, the top mold head 12 is inserted into the recessed area along the extension direction of the positioning block.

[0028] In some embodiments, the apex corners of both the second cavity 121 and the fourth cavity 221 are rounded. (See reference...) Figure 13 For example, when the produced float does not have a pull lug at the top corner of the connecting block 32, the top corners of the second cavity 121 and the fourth cavity 221 of the mold head are both set to be arc-shaped.

[0029] In some embodiments, the connecting block 32 has a pull lug at its apex corner. The top mold head 12 has recessed fifth cavities 122 and sixth cavities 123, both of which communicate with the apex corner of the second cavity 121. The fifth and sixth cavities 122 and 123 are adapted to the upper half of the pull lug. The bottom mold head 22 has recessed seventh and eighth cavities 222 and 223, both of which communicate with the apex corner of the fourth cavity 221. The seventh and eighth cavities 222 and 223 are adapted to the lower half of the pull lug. (Reference) Figure 14For example, when the produced float has a pull lug at the top corner of the connecting block 32, the pull lug protrudes outward; the pull lug is provided with a first through hole and a first groove, and the first groove is distributed circumferentially around the first through hole to form multiple reinforcing ribs distributed radially and circumferentially. The first through hole is used to pass through a mounting bolt, and the first through hole is adapted to the hole of the pull lug connecting the float. Each pull lug is staggered in the height direction of the float, so the float is connected and fixed to other connecting floats by threaded connectors. Correspondingly, a cylindrical first protrusion and a second protrusion distributed circumferentially around the first protrusion can be provided in the fifth cavity 122 and the sixth cavity 123. The first protrusion is used to form the first through hole, and the second protrusion is used to form the first groove. Multiple recessed areas are connected between the first and second protrusions, and these recessed areas are used to form reinforcing ribs. Similarly, the same protrusions and recesses can be provided in the seventh cavity 222 and the eighth cavity 223. During the forming stage, extrusion can form the first groove and reinforcing ribs on the pull lug, which can prevent the formation of air holes inside the material. The first groove is distributed circumferentially around the first through hole, and multiple rings can be provided, thus forming multiple reinforcing ribs distributed radially and circumferentially, thereby improving the strength of the pull lug. The shape of the second protrusion can be a fan-shaped ring, a rectangle, or an irregular polygonal structure, without much limitation here.

[0030] In some embodiments, the top surface of the float body has a groove for mounting a connecting rod, wherein the bottom of the first cavity 111 is provided with a protrusion 13, the protrusion 13 being close to the top mold head 12, and the protrusion 13 being adapted to the groove.

[0031] Specifically, according to the design requirements of the outer dimensions of the floating body, the middle part of the top base 11 is set as a protrusion, that is, higher than the two ends of the top base 11 near the top mold head 12; correspondingly, the depth of the first cavity 111 in the middle part is deeper, and correspondingly, the middle part of the bottom base 21 is set as a recess, that is, lower than the two ends of the bottom mold head 22; correspondingly, the depth of the third cavity 211 at the two ends is shallower. When the top mold and the bottom mold are engaged, the middle protrusion of the top base 11 and the middle recess of the bottom base 21 fit together, which can achieve a better positioning effect. Both ends of the protrusion 13 are integrally connected to the two side walls of the first cavity 111, and the extension direction of the protrusion 13 is perpendicular to the length direction of the first cavity 111. The upper surface of the float is provided with at least two grooves arranged at intervals along the length direction of the float, that is, the extension direction of the grooves is perpendicular to the length direction of the float. When multiple floats are arranged side by side at intervals, the connecting rod is embedded in the groove to connect the multiple floats into a whole to form an operation and maintenance channel between photovoltaic modules. The bottom of the groove is provided with a mounting plate, which may be provided with mounting holes for mounting and fixing with the connecting rod using threaded connectors. The mounting plate may also be provided with protruding reinforcing ribs and corresponding recessed areas. Therefore, recessed parts and protrusions are provided at corresponding positions in the first cavity and the third cavity. In this way, the extrusion during the forming stage can avoid the formation of air holes inside the material and improve the strength of the mounting plate.

[0032] In some embodiments, the bottom of the first cavity 111 is provided with a recessed strip area 14. The recessed strip areas 14 can be interlaced to form an X shape. The X-shaped pattern can be spaced apart, so that a protruding rib structure is formed on the top surface of the float body, which can play an anti-slip role. In addition, when the float is transported, the floats are stacked together, and the concave and convex rib structures on the upper and lower surfaces of the float correspond to each other. After packaging, the floats can be prevented from being misaligned or slipping during transportation.

[0033] In some embodiments, the sidewall of the first cavity 111 is provided with a plurality of spaced-apart first protrusions 15, and the sidewall of the third cavity 211 is provided with a plurality of spaced-apart second protrusions 23. The second protrusions 23 correspond to the first protrusions 15, and there is a set gap between the upper and lower corresponding second protrusions 23 and the first protrusions 15, so as to form corresponding recesses on the sidewall of the float body when the top mold and the bottom mold are engaged. The formation of corresponding recesses on the sidewall of the float body is beneficial for buffering the impact of sea waves. When the top mold and the bottom mold are engaged, the reserved set gap between the upper and lower corresponding second protrusions 23 and the first protrusions 15 is beneficial for the fit between the top mold and the bottom mold and for the blank to be blow-molded in the cavity, and can further enhance the strength of the joint between the upper and lower halves of the float.

[0034] In some embodiments, the bottom of the third cavity 211 is provided with a plurality of spaced-apart third protrusions 24, which are used to form recessed weight-reducing holes at the bottom of the formed float body. The plurality of third protrusions 24 may be arranged to be spaced apart sequentially along the length direction of the third cavity 211, and the third protrusions 24 may be configured as cuboid structures. The length and width dimensions of the third protrusions 24 gradually decrease from the bottom of the third cavity 211 upward along the height direction, which is beneficial for demolding.

[0035] In some embodiments, the top mold head 12 is provided with first inserts 16 on both sides, and the first inserts 16 are located on both sides of the second cavity. The first inserts 16 protrude along the side wall of the top mold head away from the top surface of the top mold head. The bottom mold head 22 is provided with recessed first slots 26 on both sides, and the first slots 26 are adapted to the first inserts 16. When the top mold 10 and the bottom mold 20 are engaged, the first inserts 16 are inserted into the first slots 26, which can achieve a better positioning effect and prevent misalignment between the top mold 10 and the bottom mold 20.

[0036] In some embodiments, the top base 11 has second slots 17 on both sides, and the second slots are located on both sides of the first cavity. The second slots 17 are recessed along the sidewall of the top base away from the top surface of the top base. The bottom base 21 has second inserts 27 on both sides, and the sides of the second inserts 27 have arc-shaped protrusions that extend along the height direction. The second inserts 27 are adapted to the second slots 17. When the top mold 10 and the bottom mold 20 are engaged, the second inserts 27 are inserted into the second slots 17. The sides of the second inserts 27 have multiple protrusions that are arranged sequentially along the length of the base. The orientation of the inserts and slots on the base is opposite to that of the mold head. This ensures good positioning in the left-right, front-back, and up-down directions after the top mold and bottom mold are engaged, achieving better positioning and preventing misalignment, which is beneficial for the formation of the float.

[0037] In some embodiments, the top surface of the top base 11 includes a first cutting surface 114 and a first parting surface 115 arranged sequentially from the inside out. The first cutting surface 114 is close to the first cavity 111 and is higher than the first parting surface 115. The first parting surface 115 is provided with a plurality of first cutting edge structures 116 spaced apart along the length direction of the first cavity 111. Each first cutting edge structure 116 includes a plurality of serrations protruding from the first parting surface 115, and the plurality of serrations are spaced apart along the length direction of the first cavity 111. The top surface of the bottom base 21 includes a second cutting surface 214 and a second parting surface 215 arranged sequentially from the inside out. The second cutting surface 214 is close to the third cavity 211 and is higher than the second parting surface 215. The second parting surface 215 is provided with a plurality of second cutting edge structures 216 spaced apart along the length direction of the third cavity 211. The second cutting edge structure 216 includes a plurality of serrations protruding from the second parting surface 215 and the plurality of serrations are spaced apart along the length direction of the third cavity 211. When the top mold and the bottom mold are engaged, the serration tips of the first cutting edge structure 116 are in contact with the serration tips of the second cutting edge structure 216, and the distance between the first cutting surface 114 and the second cutting surface 214 is less than a set threshold.

[0038] Specifically, by adjusting the serration height of the first cutting edge structure 116 and the second cutting edge structure 216, the distance between the first cutting surface 114 and the second cutting surface 214 can be achieved. After the top mold and the bottom mold are engaged, the serration tips of the two meet, and a gap exists between the first cutting surface 114 and the second cutting surface 214. The gap between the two is less than a set threshold. After the billet is blow-molded into a floating billet and cooled, the pressing point of the first cutting surface 114 and the second cutting surface 214 forms a cutting surface for the floating billet and excess edge material. The operator can remove the excess edge material around the floating billet according to the cutting surface. Similarly, corresponding cutting surfaces, parting surfaces, and cutting edge structures can be set on the top mold head and the bottom mold head.

[0039] In some embodiments, multiple water holes can be provided on the sides of the top mold 10 and the bottom mold 20. These water holes are used to introduce cooling water, allowing the float blank inside the mold to cool and solidify rapidly, ensuring the dimensional accuracy of the float. Multiple mounting holes and air holes are provided on the top or bottom surfaces of the top mold 10 and the bottom mold 20. The mounting holes are used to mount the top mold or bottom mold onto the back plate, and the air holes are used to introduce high-pressure gas, which is beneficial for the forming of the float blank.

[0040] In some embodiments, reference is made to Figures 15-22The top mold 50 includes multiple top mold segments arranged in sequence, each top mold segment having a recessed top cavity. Adjacent top mold segments are detachably connected, and their end faces contact each other. Each top cavity is sequentially connected. The bottom mold 60 includes multiple bottom mold segments arranged in sequence, each bottom mold segment having a recessed bottom cavity. Adjacent bottom mold segments are detachably connected, and their end faces contact each other. Each bottom cavity is sequentially connected. The top mold and the bottom mold are fastened together, and the top and bottom cavities constitute a molding cavity. The top mold 50 includes multiple top mold segments arranged in sequence with their end faces tightly fitted. The end faces of each top mold segment can be precision machined, ensuring a tight fit between the end faces of adjacent top mold segments. After connection between adjacent top mold segments, there are no gaps between them, making the two top cavities flush and connected. The detachable connection between two adjacent top mold sections can be, for example, a threaded connection or a snap-fit ​​connection. Similarly, the connection between two adjacent bottom mold sections can also be detachable. Each top mold section can be configured in multiple specifications, and the shape or size of the top cavity of each specification of the top mold section can be set to be different. The bottom mold section can be configured in multiple specifications, and the shape or size of the bottom cavity of each specification of the bottom mold section can also be set to be different. Therefore, by combining top mold sections and bottom mold sections of different specifications, floats of different specifications can be produced.

[0041] In some embodiments, the top mold 50 includes a first top mold 51 and a second top mold 52, which are connected on the side by a threaded connector. The first top mold 51 has a recessed first top cavity 53, and the second top mold 52 has a recessed second top cavity 54. The first top cavity 53 and the second top cavity 54 communicate with each other. The bottom mold 60 includes a first bottom mold 61 and a second bottom mold 62, which are connected on the side by a threaded connector. The first bottom mold 61 has a recessed first bottom cavity 63, and the second bottom mold 62 has a recessed second bottom cavity 64. The first bottom cavity 63 and the second bottom mold 62 communicate with each other. Cavity 64 is connected; the top mold and the bottom mold are engaged, and the first top cavity 53, the second top cavity 54, the first bottom cavity 63 and the second bottom cavity 64 constitute the molding cavity; wherein, the second type of float includes a first section float and a second section float connected to the first section float as one piece, the first top cavity 53 and the second top cavity 54 are respectively adapted to the upper half of the first section float and the second section float, and the first bottom cavity 63 and the second bottom cavity 64 are respectively adapted to the lower half of the first section float and the second section float; when one of the first section top mold and the second section top mold is replaced, the blow-molded second type of float can have different numbers of pull ears, different pull ear spacing and / or different length dimensions of the float.

[0042] refer to Figures 23-28 ,For example Figure 23The top mold includes a first top mold 511 and a second top mold 521. At this time, both the first top cavity and the second top cavity have four pull-ear top cavities. Figure 24 The bottom mold includes a first bottom mold 611 and a second bottom mold 621. Both the first and second bottom cavities have four pull lug bottom cavities. During the production of the float, Figure 23 The top mold and Figure 24 After the bottom mold is snapped together, the resulting float will have eight lugs. For example... Figure 25 The top mold includes a first top mold 512 and a second top mold 522. At this time, both the first top cavity and the second top cavity have two pull-ear top cavities. Figure 26 The bottom mold includes a first bottom mold 612 and a second bottom mold 622. Both the first and second bottom cavities have two pull lug bottom cavities. During the production of the float, Figure 25 The top mold and Figure 26 After the bottom mold is snapped together, the resulting float will have four lugs. For example, [the following text is incomplete and likely refers to a different process:] Figure 23 The first section of the top mold 511 remains unchanged, while the second section of the top mold 521 is replaced with... Figure 25 The second top mold 522 in the middle can be obtained as follows Figure 27 The top mold shown is... Figure 27 The top mold is composed of a first top mold section 511 and a second top mold section 522. Correspondingly, Figure 24 The first bottom mold 611 remains unchanged, while the second bottom mold 621 is replaced with... Figure 26 The second bottom mold 622 in the middle can be obtained as follows Figure 28 The bottom mold shown is Figure 28 The bottom mold is composed of a first bottom mold 611 and a second bottom mold 622 joined together. Figure 27 The top mold and Figure 28 After the bottom mold is snapped in place, a float with six lugs is formed. Therefore, when a floating array for floating photovoltaic power generation requires the connection of floats of various specifications, by rationally planning the various specifications of floats, dividing the top mold into multiple top mold sections, and correspondingly dividing the bottom mold into multiple bottom mold sections, and combining the top mold sections and bottom mold sections of different specifications accordingly, floats of different specifications can be produced without replacing the entire set of molds, thus reducing the manufacturing cost of the molds. The first top mold section 51 and the second top mold section 52 are connected on the side by threaded connectors, which facilitates installation and disassembly and also facilitates the snapping operation of the top and bottom molds.

[0043] In some embodiments, one of the first top mold 51 and the second top mold 52 has a recessed groove 55 and a mounting hole 56 on one side. The mounting hole 56 communicates with the groove 55, and the extending directions of the mounting hole 56 and the groove 55 are parallel to the extending direction of the top cavity. The other of the first top mold 51 and the second top mold 52 has a threaded hole on one side, which is adapted to the mounting hole 56 to connect the first top mold 51 and the second top mold 52 via a threaded connector. The groove 55 provides assembly space for installing the threaded connector. The threaded connector is, for example, a bolt. The bolt is passed through the mounting hole 56 and screwed into the threaded hole to connect and fix the first top mold 51 and the second top mold 52. The groove 55 on the side of the top mold facilitates operation. Similarly, to ensure a tight connection and improve stability, detachable connections can be provided on both sides of the top mold and the bottom mold.

[0044] In some embodiments, the top surface of the first top mold 51 has a recessed first positioning groove 57, which is an elongated hole, and the extending direction of the positioning groove is parallel to the extending direction of the top cavity; the top surface of the second top mold 52 has a recessed second positioning groove 58, which is adapted to and communicates with the first positioning groove 57, for installing a positioning key. Similarly, the top surface of the first bottom mold 61 has a corresponding recessed third positioning groove 65, and the top surface of the second bottom mold 62 has a corresponding recessed fourth positioning groove 66, which are adapted to and communicate with each other, and can be used to install a positioning key. The positioning key is inserted into the second positioning groove 58 and the first positioning groove 57, and the positioning key and the positioning groove can be interference-fitted to ensure accurate docking of the first top mold 51 and the second top mold 52. Then, the bolt is passed through the mounting hole 56 and screwed into the threaded hole to firmly connect the first top mold 51 and the second top mold 52. The end faces of the two top mold sections fit tightly without gaps, making the two top cavities flush and connected, thus ensuring uniform wall thickness of the formed float. Similarly, the positioning key can be inserted into the third positioning groove 65 and the fourth positioning groove 66 to ensure accurate docking of the first bottom mold 61 and the second bottom mold 62. Then, the bolt is passed through the mounting hole 56 and screwed into the threaded hole to firmly connect the first bottom mold 61 and the second bottom mold 62. The height of the positioning key can be set not higher than the positioning groove, and the upper and lower positioning keys do not interfere with each other after the top mold and bottom mold are engaged.

[0045] In some embodiments, the top mold further includes a third top mold 59, which is located between the first top mold 51 and the second top mold 52, and is detachably connected to both the first and second top molds. The third top mold 59 has a recessed third top cavity, the two ends of which communicate with the first top cavity 53 and the second top cavity 54, respectively. The bottom mold further includes a third bottom mold 67, which is located between the first bottom mold 61 and the second bottom mold 62, and is detachably connected to both the first and second bottom molds. The third bottom mold 67 has a recessed third bottom cavity, the two ends of which communicate with the first bottom cavity 63 and the second bottom cavity 64, respectively. When it is necessary to increase the length of the float, for example... Figure 1 The length of the first type of longitudinal connecting float 37 is greater than that of the second type of longitudinal connecting float 39. A third top mold 59 can be connected between the first top mold 51 and the second top mold 52 in the production of the second type of longitudinal connecting float 39, and a third bottom mold 67 can be connected between the first bottom mold 61 and the second bottom mold 62 in the production of the second type of longitudinal connecting float 39, so that the entire set of molds can be replaced without changing the molds, thereby reducing the manufacturing cost of the molds. Mounting holes 56 can be provided on the side of the third top mold 59. Bolts pass through the mounting holes 56 of the first top mold 51 and the third top mold 59 and are screwed into the threaded holes to connect and fix the first top mold 51, the third top mold 59 and the second top mold 52. When the length of the third top mold 59 is too long, the length of the bolt exceeds the set range. In this case, threaded holes can be provided on the side of the third top mold 59 near the first top mold 51, and recessed slots 55 and mounting holes 56 can be provided on the side of the third top mold 59 near the second top mold 52. In this way, the first top mold 51 and the third top mold 59 are connected and fixed by a set of threaded connectors, and the third top mold 59 and the second top mold 52 are connected and fixed by another set of threaded connectors. A positioning groove can be provided on the top surface of the third-section top mold 59. The positioning grooves can be located at both ends of the third-section top mold 59, and the two positioning grooves are respectively connected to the first positioning groove 57 and the second positioning groove 58. This ensures that after the positioning key is installed, the third-section top mold 59 is accurately aligned with the first-section top mold 51 and the second-section top mold 52. At this time, the bolt is passed through the mounting hole 56 and screwed into the threaded hole to firmly connect the third-section top mold 59 with the first-section top mold 51 and the second-section top mold 52. The end faces of the two adjacent top mold sections fit tightly without gaps, which makes the two adjacent top cavities flush and connected. This ensures that the wall thickness of the formed float is uniform. Similarly, a positioning groove can be provided on the top surface of the third-section bottom mold 67 to ensure that after the positioning key is installed, the third-section bottom mold 67 is accurately aligned with the first-section bottom mold 61 and the second-section bottom mold 62.

[0046] In some embodiments, the third top mold 59 and the third bottom mold 67 each comprise multiple molds of different lengths. By replacing the third top mold 59 and the third bottom mold 67, the length of the blow-molded float can be changed. The lengths of the third top mold 59 and the third bottom mold 67 can be, for example, 50mm, 100mm, 200mm, 300mm, 500mm, etc. By replacing the third top mold 59 and the third bottom mold 67, the length of the blow-molded float can be changed, eliminating the need to replace the entire mold set, reducing mold manufacturing costs, and meeting the diverse float requirements of floating arrays used for floating photovoltaic power generation.

[0047] In some embodiments, one of the top molds and the bottom mold has a plurality of protruding inserts 71 on its top surface. The inserts 71 are spaced apart along the extension direction of the top cavity, and the sides of the inserts 71 have arc-shaped protrusions that extend along the height direction. The other of the top molds and the bottom mold has a recessed slot 72 on its top surface, which is adapted to the inserts 71. When the top mold and the bottom mold are engaged, the inserts 71 are inserted into the slots 72. The sides of the inserts 71 have arc-shaped protrusions, and the plurality of protrusions are arranged sequentially along the extension direction of the top cavity. Through the adaptation of the slots 72 and the inserts 71, the top mold and the bottom mold are well limited in the left-right, front-back, and up-down directions after engagement, which can achieve better positioning effect, prevent misalignment, and facilitate the formation of the float.

[0048] In some embodiments, the bottom of the bottom cavity is provided with multiple spaced protrusions 73, which are used to form recessed weight-reducing holes at the bottom of the formed float; the bottom of the top cavity is provided with a recessed strip-shaped area 74 to form a protruding rib structure on the top surface of the formed float. The protrusions 73 can be designed as cuboids, and their length and width gradually decrease from the bottom of the bottom cavity upwards along the height direction, which is beneficial for demolding. The bottom of the top cavity is provided with recessed strip-shaped areas 74, which can be staggered to form an X shape. The X-shaped patterns can be spaced apart, thus forming a protruding rib structure on the top surface of the float, which can play a role in anti-slip; and during the transport of the floats, the floats are stacked together, and the concave and convex rib structures on the upper and lower surfaces of the floats correspond to each other, which can prevent the floats from shifting or slipping during transport after packaging.

[0049] In some embodiments, the first top cavity and the second top cavity are symmetrical structures, and the first bottom cavity and the second bottom cavity are symmetrical structures. (See reference...) Figure 23-24 ,For example Figure 23The top mold includes a first top mold 511 and a second top mold 521. Both the first and second top cavities have four pull-ear top cavities, and the first and second top cavities have a symmetrical structure. For example... Figure 24 The bottom mold includes a first bottom mold 611 and a second bottom mold 621. Both the first and second bottom cavities have four pull lug cavities. The first and second bottom cavities have a symmetrical structure. Figure 23 The top mold and Figure 24 After the bottom mold is snapped together, the resulting float will have 8 lugs; or, Figure 25 The top mold and Figure 26 After the bottom mold is snapped together, a float with four lugs can be obtained. By designing different cavities and using different top and bottom mold sections, floats of different specifications can be produced to meet the diverse float requirements of float arrays used for floating photovoltaic power generation.

[0050] In some embodiments, both the first and second float segments have lugs, and the number of lugs in the first float segment differs from the number of lugs in the second float segment; wherein, the first dome cavity includes multiple recessed first lug dome cavities, and the second dome cavity includes multiple recessed second lug dome cavities, and the number of first lug dome cavities differs from the number of second lug dome cavities; and / or, there is a first spacing between two first lug dome cavities on each side, and a second spacing between two second lug dome cavities on each side, wherein the first spacing and the second spacing are set to be different. For example, […]. Figure 27 The top mold and Figure 28 After the bottom mold is engaged, a float with six lugs can be formed, i.e., the first float has two lugs and the second float has four lugs; or, when the distance between the two lugs at the top corner of the first float is different from the distance between the two lugs at the top corner of the second float, floats of different specifications can be produced by changing the top mold and bottom mold, thus eliminating the need to replace the entire mold and reducing the manufacturing cost of the mold.

[0051] In an exemplary embodiment, the pull lugs of the float protrude outwards. Each pull lug has a first through hole and a first groove. The first grooves are spaced circumferentially around the first through hole to form multiple radially and circumferentially distributed reinforcing ribs. The first through hole is used to pass through a mounting bolt and is adapted to the hole of the pull lug connecting the float. The pull lugs are staggered in the height direction of the float, thus allowing the float to be connected and fixed to other connecting floats via threaded connectors. Correspondingly, a cylindrical first protrusion and second protrusions spaced circumferentially around the first protrusion can be provided within the top cavity of the pull lug. The first protrusion forms the first through hole, and the second protrusion forms the first groove. Multiple recessed areas connect the first and second protrusions, and these recessed areas form the reinforcing ribs. Similarly, the same protrusions and recesses can be provided in the bottom cavity of the pull lug in the bottom mold section. During the forming stage, extrusion can form the first groove and reinforcing ribs on the pull lug, which can prevent the formation of air holes inside the material. The first groove is distributed circumferentially around the first through hole, and multiple rings can be provided, thus forming multiple reinforcing ribs distributed radially and circumferentially, thereby improving the strength of the pull lug. The shape of the second protrusion can be a fan-shaped ring, a rectangle, or an irregular polygonal structure, without much limitation here.

[0052] In related technologies, the production process is limited by fixed molds, lacks flexibility, and is difficult to quickly adapt to the production needs of various floating products, resulting in a slow market response speed.

[0053] In view of this, embodiments of the present invention also provide a method for controlling the production of a floating body, based on the above-described floating body blow molding die, with reference to... Figures 29-30 The method includes the following specific steps: Step S110: Install the mold: Select the matching blow molding mold for the float according to the specifications of the float to be produced, and install the blow molding mold on the connecting back plate.

[0054] Specifically, for example, the float to be produced has a roughly rectangular parallelepiped structure and varies in specifications, such as different length, width, and height dimensions, different shapes, and whether it has lugs at the top corners. Based on the specifications of the float to be produced, a matching float blow molding die is selected. The float blow molding die provided in this embodiment of the invention includes a top mold and a bottom mold that fit together. The top mold includes multiple top mold segments, each with a recessed top cavity. Two top mold segments are detachably connected to allow corresponding top cavities to communicate. The bottom mold includes multiple bottom mold segments, each with a recessed bottom cavity. Two bottom mold segments are detachably connected to allow corresponding bottom cavities to communicate. The top mold and the bottom mold are engaged, and the top and bottom cavities constitute a molding cavity. This molding cavity is used for blow molding the float. The connecting back plate may include a first back plate 94 and a second back plate 95. The top mold 50 or the top mold 10 is installed on the first back plate 94, and the bottom mold 60 or the bottom mold 20 is installed on the second back plate 95, so as to realize the installation of the floating body blow molding mold on the connecting back plate.

[0055] Step S120, Mixing and Pretreatment: The HDPE raw material and the modified material are stirred and mixed to obtain raw material particles, wherein the moisture content of the raw material particles is ≤0.1%.

[0056] According to the specifications of the float to be produced, a certain mass ratio of HDPE (high-density polyethylene) raw materials and modified materials are stirred and mixed to obtain uniformly mixed raw material particles, and the raw material particles are conveyed to the material cylinder 91; wherein the moisture content of the raw material particles is ≤0.1%.

[0057] Step S130, Melting and Plasticizing: The pre-treated raw material particles are fed into a screw conveyor. The heating temperature and screw speed are adjusted according to the specifications of the float to be produced, so that the raw material particles are melted and plasticized to form a molten billet.

[0058] The raw material granules stored in the barrel 91 enter the screw conveyor 92, which includes a rotatable screw and a heater. By adjusting the temperature of the heater and the speed of the screw, the raw material granules are melted and plasticized to form a molten billet, which is then extruded through the screw conveyor 92 into the storage cylinder 93. The temperature of the blow molding machine can be adjusted within the range of 200-220℃ to form a uniform molten material flow.

[0059] Step S140, Billet Injection: Inject the molten billet into the forming cavity of the floating blow molding mold.

[0060] The storage cylinder 93 is equipped with a central feeding die head, which is designed to be able to move up and down to control the thickness of the molten billet output. The height of the die head can be adjusted according to the specifications of the float to be produced. When the molten billet is extruded and descends through the die head, the extruded billet is pinched and sealed at the bottom. At this time, the top die and bottom die are snapped together, and the top cavity and bottom cavity form a molding cavity. The molten billet is extruded through the die head and injected into the molding cavity of the float blow molding mold.

[0061] Step S150, Cooling and Shaping: Gas at a set pressure is introduced into the air hole of the float blow molding mold, and cooling water at a set temperature is introduced into the water hole of the float blow molding mold. The preset cooling time is maintained to allow the blank in the float blow molding mold to cool and solidify, thereby obtaining a blow-molded float.

[0062] The gas pressure and cooling water temperature are set according to the specifications of the float to be produced. Gas at the set pressure is introduced into the air vent of the float blow molding mold, and cooling water at the set temperature is introduced into the water vent of the mold, maintaining a preset cooling time. This allows the float blank inside the mold to cool and solidify rapidly, resulting in a blow-molded float with high dimensional accuracy. Figure 30 The arrows in the diagram indicate the flow direction of the billet.

[0063] In some embodiments, the method further includes the following specific steps: When it is necessary to switch to producing a different specification of float, shut down the blow molding machine, disassemble one of the top mold sections of the current top mold, and correspondingly disassemble one of the bottom mold sections of the current bottom mold. Install the new top and bottom mold sections onto the connecting back plate, and repeat the mixing pretreatment, melting and plasticizing, billet injection and cooling and shaping in steps S120-S150 above to achieve the diversity of production of floating body products.

[0064] By replacing at least one top mold segment and correspondingly replacing at least one bottom mold segment, and then engaging the replaced top and bottom molds, the resulting floats produced from the blow-molded blank injected into the molding cavity can vary in specifications or dimensions, thus meeting the market's demand for diverse floats. Each top mold segment can be configured with multiple specifications, and the shape or size of the top cavity can be different for each specification. Similarly, each bottom mold segment can be configured with multiple specifications, and the shape or size of the bottom cavity can also be different for each specification. Therefore, by replacing different specifications of top and bottom mold segments, floats of different specifications can be produced. For example, by replacing one of multiple top mold segments and a corresponding one of multiple bottom mold segments, floats of different specifications can be produced without replacing the entire mold set, thus reducing mold manufacturing costs. Furthermore, one of the top mold segments and bottom mold segments installed on the connecting back plate can be disassembled, and another new top mold segment and bottom mold segment can be quickly installed on the first back plate 94 and the second back plate 95. The other top mold segments and bottom mold segments can remain unchanged, thereby shortening the replacement process time and improving production efficiency. After the replaced top mold and bottom mold are snapped together, the blank injected into the molding cavity is blow molded, and the resulting float has changed in terms of specifications or dimensions, which can meet the market demand for diversified floats.

[0065] This invention also provides a floating body for floating photovoltaic power generation, prepared based on the above-described production control method. The produced floating body can be used to install a floating body array, see reference. Figure 1 A floating array for floating photovoltaic power generation includes a main float 33, a transverse channel, and a longitudinal channel. The main floats 33 are arranged at intervals along a first direction and a second direction, respectively. Each main float carries two sets of photovoltaic modules arranged along the first direction. By carrying two sets of photovoltaic modules on one main float to form a small photovoltaic unit, and then arranging these small photovoltaic units in a square array according to the array configuration of the floating photovoltaic power generation system, the overall array integrity is improved, while space utilization and the installed capacity of the photovoltaic power generation system are increased. Furthermore, it overcomes the limitation of the minimum spacing between photovoltaic modules, reduces installation steps, shortens installation time, and ultimately improves overall installation efficiency. The floating array production control method provided by this invention uses molds with replaceable top and bottom mold sections to produce diverse floating arrays, meeting the diverse needs of floating arrays and satisfying the structural, layout, and load-bearing requirements of floating photovoltaic power generation systems. This adapts to complex aquatic environments and diverse project needs.

[0066] The following example illustrates a production control method for a float provided by an embodiment of the present invention, using a mold with interchangeable top and bottom mold sections to produce a float: The top mold 10 is installed on the first back plate 94, and the bottom mold 20 is installed on the second back plate 95, so that the floating body blow molding mold is installed on the connecting back plate. After the mixing pretreatment, melting and plasticizing, billet injection and cooling and shaping in the above steps S120-S150, the produced floating body product is a first-type floating body without pull lugs, such as... Figure 13 As shown. When different top mold heads 12 are changed on the top base 11, and different bottom mold heads 22 are changed on the bottom base 21, after the mixing pretreatment, melt plasticizing, billet injection and cooling and shaping in steps S120-S150 above, the produced floating body product is a first-type floating body with pull lugs, such as... Figure 14 As shown. Among them, the splicing and positioning error of the mold before and after replacement is 0.03-0.05mm, and the replacement time is 10-15 minutes; in the molding and shaping stage, the wall thickness deviation of the float is ≤0.08mm, and the dimensional tolerance is ±0.15-±0.2mm.

[0067] Comparative Example Both the bottom and top molds are designed as a single integral structure, with one mold corresponding to a single shape and specification of float product. After the injected blank passes through the integral mold, the produced float product is a float without pull lugs. If the bottom and top molds are replaced with integral structures and installed on the connecting back plate, the produced float product is a float with pull lugs. The positioning error after replacing the mold as a whole compared to the previous float production is 0.06-0.08mm, which meets the accuracy requirements, but replacing the integral mold takes more than 1.5 hours. During the molding and shaping stage, the wall thickness deviation is 0.09-0.11mm, and the dimensional tolerance is ±0.2-±0.25mm.

[0068] As can be seen from the comparison, the production control method for the float provided in this embodiment of the invention has significant advantages in improving production efficiency by replacing at least one top mold section in the top mold and correspondingly replacing at least one bottom mold section in the bottom mold. The produced float products are better in terms of wall thickness deviation and dimensional accuracy, and the production of diverse floats is more flexible.

[0069] It should be understood that the specific embodiments described above are merely illustrative or explanatory of the principles of the invention and do not constitute a limitation thereof. Therefore, any modifications, equivalent substitutions, improvements, etc., made without departing from the spirit and scope of the invention should be included within the protection scope of the invention. Furthermore, the appended claims are intended to cover all variations and modifications falling within the scope and boundaries of the appended claims, or equivalent forms of such scope and boundaries.

Claims

1. A floating blow molding mold, characterized in that, This includes a top mold and a bottom mold that fit together appropriately, wherein, The top mold includes multiple top mold segments, each top mold segment having a recessed top cavity, and two top mold segments are detachably connected so that the corresponding two top cavities can be connected. The bottom mold includes multiple bottom mold segments, each bottom mold segment having a recessed bottom cavity, and two bottom mold segments are detachably connected so that the corresponding two bottom cavities can communicate. The top mold and the bottom mold engage, and the top cavity and the bottom cavity constitute a molding cavity; wherein... The molding cavity is used for blow molding of a float, which has a generally rectangular parallelepiped structure. The top cavity is adapted to the upper half of the float, and the bottom cavity is adapted to the lower half of the float. When at least one top mold segment is replaced and at least one bottom mold segment is replaced accordingly, the replaced top mold and bottom mold are fastened together, causing the float formed by blow molding of the blank injected into the molding cavity to change.

2. The floating blow molding die according to claim 1, characterized in that, The top mold section includes a top base and a top mold head. The top mold head is located at both ends of the top base and is detachably connected to the top base. The top base has a recessed first cavity, and the top mold head has a recessed second cavity. The first cavity and the second cavity are in communication. The bottom mold includes a bottom base and a bottom mold head. The bottom mold head is located at both ends of the bottom base and is detachably connected to the bottom base. The bottom base has a recessed third cavity, and the bottom mold head has a recessed fourth cavity. The third cavity and the fourth cavity are connected. The top mold and the bottom mold are engaged, and the first cavity, the second cavity, the third cavity, and the fourth cavity constitute a molding cavity; wherein... The first type of float includes a float body and a connecting block that is integrally connected to both ends of the float body; the first cavity is adapted to the upper half of the float body, the second cavity is adapted to the upper half of the connecting block; the third cavity is adapted to the lower half of the float body, and the fourth cavity is adapted to the lower half of the connecting block. When the connecting block has pull lugs, the first type of float formed by blow molding can be equipped with pull lugs by replacing the top mold head and the bottom mold head.

3. The floating blow molding die according to claim 2, characterized in that, The top base has a first recessed area at each end. The top surface or side surface of the first recessed area has a protruding first positioning block. The bottom surface or side surface of the top mold head has a recessed first positioning groove. The first positioning groove is adapted to the first positioning block so as to install the top mold head in the first recessed area, so that the first cavity and the second cavity are connected. The bottom base is provided with a second recessed area at both ends. The top or side surface of the second recessed area has a protruding second positioning block. The bottom or side surface of the bottom mold head has a recessed second positioning groove. The second positioning groove is adapted to the second positioning block to realize the installation of the bottom mold head in the second recessed area, so that the third cavity and the fourth cavity are connected.

4. The floating blow molding die according to claim 1, characterized in that, The top mold includes a first top mold section and a second top mold section. The first top mold section has a recessed first top cavity, and the second top mold section has a recessed second top cavity. The first top mold section and the second top mold section are connected on the side by a threaded connector, and the end faces of the first top mold section and the second top mold section are in contact, so that the first top cavity and the second top cavity are connected. The bottom mold includes a first bottom mold section and a second bottom mold section. The first bottom mold section has a recessed first bottom cavity, and the second bottom mold section has a recessed second bottom cavity. The first bottom mold section and the second bottom mold section are connected on the side by a threaded connector. The end faces of the first bottom mold section and the second bottom mold section are in contact, so that the first bottom cavity and the second bottom cavity are connected. The top mold and the bottom mold are engaged, and the first top cavity, the second top cavity, the first bottom cavity, and the second bottom cavity constitute the molding cavity; wherein... The second type of float includes a first section of float and a second section of float that is connected to the first section of float as one piece. The first top cavity and the second top cavity are respectively adapted to the upper half of the first section of float and the second section of float, and the first bottom cavity and the second bottom cavity are respectively adapted to the lower half of the first section of float and the second section of float. When one of the first and second top molds is replaced, the second type of float to be blow-molded has different numbers of pull lugs, different pull lug spacing and / or different length dimensions.

5. The floating blow molding die according to claim 4, characterized in that, One of the first and second top molds has a recessed groove and a mounting hole on one side. The mounting hole communicates with the groove, and the extension direction of the mounting hole and the groove is parallel to the extension direction of the top cavity. The other of the first and second top molds has a threaded hole on one side. The threaded hole is adapted to the mounting hole to enable the connection of the first and second top molds through a threaded connector. The groove provides assembly space for installing the threaded connector.

6. The floating blow molding die according to claim 5, characterized in that, The top surface of the first top mold has a recessed first positioning groove, and the extending direction of the positioning groove is parallel to the extending direction of the top cavity; The top surface of the second mold has a recessed second positioning groove, which is adapted to the first positioning groove and is connected to the first positioning groove for installing positioning keys.

7. The floating blow molding die according to claim 4, characterized in that, The top mold also includes a third top mold section, which is located between the first top mold section and the second top mold section. The third top mold section is detachably connected to the first top mold section and the second top mold section. The third top mold section has a recessed third top cavity, and the two ends of the third top cavity are respectively connected to the first top cavity and the second top cavity. The bottom mold also includes a third bottom mold section, which is located between the first bottom mold section and the second bottom mold section. The third bottom mold section is detachably connected to the first bottom mold section and the second bottom mold section. The third bottom mold section has a recessed third bottom cavity, and the two ends of the third bottom cavity are respectively connected to the first bottom cavity and the second bottom cavity.

8. The floating blow molding die according to claim 7, characterized in that, The third top mold and the third bottom mold each include multiple molds of different lengths. By replacing the third top mold and the third bottom mold, the length of the blow-molded third type of float can be changed.

9. A method for controlling the production of a floating body, characterized in that, Based on the floating blow molding mold according to any one of claims 1-8, the method includes: Mold installation: Select the matching float blow molding mold according to the specifications of the float to be produced, and install the float blow molding mold on the connecting back plate; Mixing and pretreatment: HDPE raw materials and modified materials are stirred and mixed to obtain raw material particles, wherein the moisture content of the raw material particles is ≤0.1%; Melting and plasticizing: The pre-treated raw material particles are fed into a screw conveyor. The heating temperature and screw speed are adjusted according to the specifications of the float to be produced, so that the raw material particles are melted and plasticized to form a molten billet. Billet injection: The molten billet is injected into the forming cavity of the floating body blow molding die; Cooling and shaping: Gas at a set pressure is introduced into the air hole of the float blow molding mold, and cooling water at a set temperature is introduced into the water hole of the float blow molding mold. The preset cooling time is maintained to allow the blank in the float blow molding mold to cool and shape, thereby obtaining a blow-molded float.

10. The method according to claim 9, characterized in that, Also includes: When it is necessary to switch to producing a different specification of float, shut down the blow molding machine, disassemble one of the top mold sections of the current top mold, and correspondingly disassemble one of the bottom mold sections of the current bottom mold. The new top and bottom mold sections are installed on the connecting back plate, and the mixing pretreatment, melting and plasticizing, billet injection and cooling and shaping are repeated to achieve the diversity of production of floating body products.

11. A floating body for floating photovoltaic power generation, characterized in that, It is prepared based on the production control method described in claim 9 or 10.

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