A tray for a combined blow and compression molding process

Abstract

The present application relates to the technical fields of warehouse and freight pallet, in particular to a pallet with combined blowing and compression molding process, comprising pallet legs and support strips, a plurality of support strips extend along the left-right direction and are arranged in parallel on the same horizontal plane to form a support plane, and a plurality of pallet legs extend along the front-back direction and are arranged in parallel below each support strip, and the pallet legs and the support strips are connected through buckles; by adopting the combined structure, the pallet is composed of the pallet legs and the support strips, the structure is simple, the assembly is convenient, when some parts are damaged, the damaged parts can be directly replaced, and the replacement and disassembly are convenient; meanwhile, since the pallet is composed of only two kinds of parts, a complex production process is not needed, and the manufacturing cost is low; in addition, the pallet can adjust its carrying capacity by adjusting the installation number of the support strips and the pallet legs, the carrying capacity does not need to be changed by producing support strips and pallet legs with different weights, and thus the cost can be flexibly controlled.

Description

TECHNICAL FIELD

[0001] The present application relates to the field of freight and storage pallets, and particularly relates to a pallet with a combined blow molding and compression molding process. BACKGROUND

[0002] In the field of freight and storage, pallets are often used to cooperate with the bearing of goods, so as to facilitate the transportation and storage of goods by using transportation equipment. The pallet generally comprises a bearing panel 1, a support structure and a bottom plate. The traditional pallet is mostly of an integrated structure, and the material is mostly wood or metal. The various structures are connected by welding, bolt connection or pin fixing. Figure 1 As shown in the figure, there is also an integrated pallet of plastic material in the prior art, which comprises a bearing panel 1 and a support leg 11.

[0003] However, the integrated pallet has many inconveniences in use: firstly, the integrated pallet needs to be replaced as a whole once it is damaged in the long-term use process, resulting in high maintenance cost in use; in addition, the integrated pallet has a large volume, and the power source of the related equipment for producing the integrated pallet is generally high in power, resulting in high energy consumption and high production cost for pallet production; the large-volume metal or plastic integrated pallet has a high rate of defective products and a long production cycle in production.

[0004] To solve the above problems, a Chinese patent application with the publication number CN104150067A discloses a spliced and combined pallet, which comprises support beams and deck boards. The support beams are hollow metal profiles. A plurality of embedding grooves are formed on the top surface of each support beam along the width direction of the support beam. A pin rod is arranged on the upper part of each support beam along the length direction of the support beam. A connecting part is protruded downward on the bottom surface of each deck board corresponding to the embedding grooves on the top surface of each support beam. The connecting part is embedded in the corresponding embedding groove, and a lock hole is formed on the connecting part. The pin rod passes through the lock holes on the connecting parts of each deck board to connect the deck boards and the support beams. Compared with the integrated pallet, the pallet adopts splicing connection, and the damaged parts can be replaced.

[0005] However, the spliced and combined pallet has certain defects in use: the spliced pallet has many parts, and the splicing process is relatively complicated. Each deck board and the bottom connecting plate are connected with the support beam through the pin rod, and the pin rod is installed on the support beam through threaded connection. When some parts are damaged, the pin rod needs to be removed first, then the damaged parts need to be removed, and then the pin rod needs to be installed after replacing the new parts. The replacement process is also relatively complicated. The pallet needs to bear different weights of goods in different use scenarios, which requires adjusting the bearing capacity of the pallet according to the weight of different goods. However, the above pallet cannot adjust its structure, although it can meet the use, but the applicability is poor, and the cost of the pallet cannot be flexibly controlled according to the bearing demand. SUMMARY

[0006] The present application provides a tray for a combined blow molding and compression molding process to solve the technical problems of complicated installation process and poor applicability of the existing assembled tray.

[0007] To solve the above problems, the present application provides a tray for a combined blow molding and compression molding process, which adopts the following technical solutions:

[0008] The tray for a combined blow molding and compression molding process comprises a tray leg and a support strip. A plurality of support strips extend in the left-right direction and are arranged in parallel on the same horizontal plane to form a support plane. A plurality of tray legs extend in the front-back direction and are arranged in parallel below each support strip and perpendicular to the support strip. The tray leg and the support strip have a buckle assembly therebetween to achieve the buckling connection of the tray leg and the support strip.

[0009] The tray for a combined blow molding and compression molding process provided by the present application adopts a combined structure. The tray as a whole is composed of a tray leg and a support strip. A plurality of support strips are arranged in parallel to form a support plane, and a plurality of tray legs are connected through a buckle assembly. The structure is simple and convenient to assemble. When some parts are damaged, the damaged parts can be directly replaced without the need to remove other parts, which is convenient to replace and disassemble. At the same time, since the tray is composed of only two types of parts, it does not require complex production processes and has a lower manufacturing cost. In addition, compared with the existing assembled tray, the tray can adjust its carrying capacity by adjusting the number of support strips and tray legs. When the required carrying capacity is small, the operator can reduce the number of support strips and tray legs to reduce the cost of the tray while meeting the carrying demand. When the required carrying capacity is large, the number of support strips and tray legs can be increased to meet the carrying demand, thereby enabling the tray to flexibly control the cost according to the user's carrying demand.

[0010] Further, the tray leg is a ladder-shaped structure extending in the front-back direction, which comprises an upper horizontal rod, a lower horizontal rod, a plurality of vertical rods and a plurality of tray feet. The upper horizontal rod is arranged above the lower horizontal rod in parallel and is fixedly connected and integrally formed by the vertical rods. The tray feet are located on both sides of the lower horizontal rod and are integrally formed with the lower horizontal rod.

[0011] Further, the extension direction of the support strip is defined as the left-right direction, and the buckle assembly comprises a male buckle structure on the upper horizontal rod and a female buckle structure on the lower end of the support strip.

[0012] Further, the female buckle structure comprises guide blocks and lock blocks arranged in a pincer shape, and the guide blocks and the lock blocks have a space for inserting the male buckle structure; the male buckle structure comprises two positioning bevels symmetrically arranged on the left and right sides of the top end of the upper horizontal rod and inclined in an eight-shaped manner from top to bottom, so as to facilitate the insertion of the upper horizontal rod between the guide blocks and the lock blocks, the guide blocks extend in the up-down direction and have consistent up-down width, so as to avoid deformation; the lock blocks have protrusions on the upper surface, and the width of the connection between the lock blocks and the main body of the support strip is narrowed, the left and right sides of the upper horizontal rod are provided with clamping grooves corresponding to the protrusions, and the protrusions are used for clamping the lower surface of the upper horizontal rod / clamping the clamping grooves to achieve the locking of the male buckle structure and the female buckle structure.

[0013] The beneficial effects are as follows: by arranging two left-right symmetric positioning bevels on the upper horizontal rod, the positioning bevels can guide the upper horizontal rod to smoothly enter between the guide blocks and the lock blocks when the tray leg is inserted into the support strip, and the width of the connection between the lock blocks and the main body of the support strip is narrowed, thereby reducing the resistance when the tray leg is inserted into the female buckle structure of the support strip, and achieving rapid positioning and preliminary connection; the consistent up-down width of the guide blocks also ensures the strength of the guide blocks, which can stably support the tray leg; the clamping cooperation of the protrusions and the clamping grooves / the lower surface of the upper horizontal rod can achieve the firm locking of the male buckle structure and the female buckle structure, prevent the tray leg from separating from the support strip during use, and improve the safety and stability of the tray; the narrowed design of the connection between the lock blocks and the main body of the support strip can reduce the difficulty of clamping the protrusions into the clamping grooves. In addition, the left and right sides of the tray leg are provided with clamping grooves, so that the tray leg does not need to be distinguished as front and back during installation, and the assembly convenience of the tray leg and the support strip is improved.

[0014] Further, the side of the guide block close to the upper horizontal rod has a first matching surface matching the positioning bevel corresponding to the tray leg, and the side of the lock block close to the upper horizontal rod has a second matching surface matching the positioning bevel corresponding to the tray leg, so as to enhance the connection stability of the tray leg and the support strip.

[0015] The beneficial effects are as follows: by arranging the first matching surface and the second matching surface matching the positioning bevel corresponding to the tray leg on the guide block and the lock block respectively, the contact area between the male buckle structure and the female buckle structure can be increased, the connection can be made more closely, the tray can be prevented from shaking during use, and the connection stability between the support strip and the tray leg and the overall carrying capacity of the tray are improved.

[0016] Further, the front / rear side of the top end of the support strip has a front convexity / rear convexity arc-shaped flange, and the two arc-shaped flanges are symmetrically arranged front and back, and the connecting surface between the top parts of the two arc-shaped flanges is a horizontal surface.

[0017] Its beneficial effect lies in: by setting the top end of the support bar to the horizontal plane, the contact area of the goods and the upper surface of the pallet can be increased, and sufficient contact between the goods and the pallet is ensured; in addition, by setting the front and rear symmetrical arc flanges, the pallets can be clamped by the arc surfaces on the front and rear sides of the support bar when stacking forward and backward, avoiding relative sliding of adjacent pallets when stacking, and improving the use safety of the pallet.

[0018] Further, the lower end of the support bar has a plurality of positioning blocks, so as to facilitate the positioning between two adjacent pallets when the pallets are stacked forward and backward.

[0019] Its beneficial effect lies in: by setting a plurality of positioning blocks at the lower end of the support bar, the pallet legs can be blocked and positioned when the pallets are stacked forward and backward, ensuring the stability and safety of the pallet stacking, and avoiding problems such as pallet toppling caused by irregular stacking.

[0020] Further, the pallet feet are arranged at intervals on the left and right sides of the lower cross bar.

[0021] Its beneficial effect lies in: by setting the pallet feet at intervals on the lower cross bar of each pallet leg, the contact area of the pallet and the ground can be increased, thereby improving the stability of the pallet leg, avoiding shaking and tilting of the pallet when carrying goods, and improving the safety of goods transportation and storage.

[0022] Further, the pallet leg and the support bar are both made of plastic material and are integrally made by blow molding process, wherein the pallet feet are made by compression molding process, and the vertical rod is made by compression molding process / blow molding and compression molding combined process.

[0023] Its beneficial effect lies in: by using plastic material and blow molding process to manufacture the pallet leg and the support bar, the overall weight of the pallet can be greatly reduced while ensuring the carrying strength and service life, making the pallet convenient to carry and store, and reducing the production cost of the pallet; in addition, the pallet feet are made by compression molding process, and the vertical rod is made by compression molding process / blow molding and compression molding combined process, which can improve the strength and durability of the pallet feet and the vertical rod, and further enhance the overall stability of the pallet.

[0024] Further, the support bar has a plurality of weight reduction holes to reduce the overall weight of the pallet.

[0025] Its beneficial effect lies in: by setting the uniformly distributed weight reduction holes on the support bar, the torsional rigidity of the support bar can be improved, the stability and carrying capacity of the entire pallet can be improved, the overall weight of the pallet can be reduced, and the use convenience and economy of the pallet are improved.

[0026] The beneficial effect of the combined blow molding and compression molding combined process pallet provided by the application is:

[0027] 1. The tray of the combined blow molding and compression molding process provided by the present application adopts a combined structure, and the tray is composed of tray legs and support bars, a plurality of support bars are arranged in parallel to form a support plane, and a plurality of tray legs are connected through a buckle assembly, the structure is simple, the assembly is convenient, when some parts are damaged, the damaged parts can be directly replaced without the need to remove other parts, the replacement and disassembly are convenient; at the same time, since the tray is composed of only two kinds of parts, a complex production process is not needed, and the manufacturing cost is low; in addition, compared with the existing assembled tray, the tray can adjust the load capacity by adjusting the number of support bars and tray legs, when the required load capacity is small, under the premise of meeting the load demand, the operator can reduce the number of support bars and tray legs to reduce the cost of the tray; when the required load capacity is large, the number of support bars and tray legs can be increased to meet the load demand, thereby enabling the tray to flexibly control the cost according to the load demand.

[0028] 2. The tray legs and support bars are made of plastic material and by a blow molding process, which can greatly reduce the overall weight of the tray while ensuring the load strength and service life, so that the tray is convenient to carry and store, and the production cost of the tray is reduced; in addition, the tray feet are made by a compression molding process, and the vertical rods are made by a compression molding process / blow molding and compression molding combined process, which can improve the strength and durability of the tray feet and vertical rods, thereby further enhancing the overall stability of the tray.

[0029] 3. Two left-right symmetrical positioning inclined surfaces are arranged on the tray leg, so that when the tray leg is inserted into the support bar, the positioning inclined surface can guide the tray leg to smoothly enter between the guide block and the lock block, and the width of the connection between the lock block and the support bar body is narrowed, thereby reducing the resistance when the tray leg is inserted into the female buckle structure of the support bar, and realizing rapid positioning and preliminary connection; the consistent width of the guide block also ensures the strength of the guide block, which can stably support the tray leg; the cooperation of the clamping groove and the protrusion can realize firm locking of the male buckle structure and the female buckle structure, prevent the tray leg from separating from the support bar during use, improve the safety and stability of the tray, and the design of narrowing the connection between the lock block and the support bar body can reduce the difficulty of clamping the protrusion into the clamping groove. In addition, the left and right sides of the tray leg are provided with clamping grooves, so that the tray leg does not need to be distinguished as front and back during installation, and the assembly convenience of the tray leg and the support bar is improved.

[0030] 4. The first and second matching surfaces corresponding to the positioning inclined surfaces of the tray leg are arranged on the guide block and the lock block respectively, which can increase the contact area between the male buckle structure and the female buckle structure, make the connection more closely, avoid the tray from shaking during use, and further improve the connection stability between the support bar and the tray leg and the overall load capacity of the tray.

[0031] 5. By setting the top of the support bar to a horizontal plane, the contact area between the goods and the upper surface of the pallet can be increased, ensuring full contact between the goods and the pallet; in addition, by setting symmetrical arc-shaped flanges at the front and back, the pallets can be interlocked by the arc surfaces on the front and back sides of the support bar when stacked, avoiding relative sliding between adjacent pallets during stacking and improving the safety of pallet use.

[0032] 6. By setting multiple positioning blocks at the lower end of the support bars, the pallet legs can be stopped and positioned when the pallets are stacked in both directions, ensuring the stability and safety of pallet stacking and avoiding problems such as pallet tipping due to uneven stacking.

[0033] 7. By installing pallet feet at intervals on the lower crossbars of each pallet leg, the contact area between the pallet and the ground can be increased, thereby improving the stability of the pallet legs and preventing the pallet from shaking and tilting when carrying goods, thus improving the safety of goods transportation and storage.

[0034] 8. By setting evenly distributed weight-reducing holes on the support bars, the torsional rigidity of the support bars can be improved, thereby increasing the stability and load-bearing capacity of the entire pallet. At the same time, the overall weight of the pallet can be reduced, improving the ease of use and economy of the pallet. Attached Figure Description

[0035] The above and other objects, features, and advantages of exemplary embodiments of the present invention will become readily apparent upon reading the following detailed description with reference to the accompanying drawings. In the drawings, several embodiments of the invention are illustrated by way of example and not limitation, and like or corresponding reference numerals denote like or corresponding parts, wherein:

[0036] Figure 1 This is a schematic diagram of the structure of a traditional integrated pallet;

[0037] Figure 2 A schematic diagram of a tray using a combined blow molding and compression molding process provided by the present invention;

[0038] Figure 3 for Figure 2 A magnified view of a portion of point A in the middle;

[0039] Figure 4 for Figure 2 The diagram shows the structure of the support bar.

[0040] Figure 5 for Figure 4 A magnified view of a portion of point B in the middle;

[0041] Figure 6 This is a structural diagram of the female buckle structure;

[0042] Figure 7for Figure 2 The diagram shows the structure of the tray leg;

[0043] Figure 8 for Figure 7 A magnified view of a portion of point C in the middle;

[0044] Figure 9 This is the front view of the tray legs.

[0045] Explanation of reference numerals in the attached figures:

[0046] 1. Support panel; 11. Support legs;

[0047] 2. Panel assembly; 21. Support strip; 22. Weight reduction hole; 23. Arc-shaped flange; 24. Positioning block;

[0048] 3. Load-bearing components; 31. Pallet legs; 32. Pallet feet; 33. Upper crossbar; 34. Vertical bar; 35. Lower crossbar;

[0049] 4. Buckle assembly; 41. Male buckle structure; 42. Positioning bevel; 43. Buckle groove; 44. Female buckle structure; 45. Guide block; 46. Locking block; 47. Protrusion; 48. First mating surface; 49. Second mating surface. Detailed Implementation

[0050] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Those skilled in the art should understand that the embodiments described below are only some, not all, of the embodiments disclosed. All other embodiments obtained by those skilled in the art based on the embodiments of the present invention without creative effort are within the scope of protection of the present invention.

[0051] The principles and spirit of the present invention will be explained in detail below with reference to several representative embodiments.

[0052] Example 1 of a pallet using a combined blow molding and compression molding process provided by the present invention:

[0053] like Figures 2 to 9 As shown, the pallet of the present invention, which combines blow molding and compression molding processes, includes a panel assembly 2 and a support assembly 3, with the support assembly 3 installed below the panel assembly 2. The panel assembly 2 includes multiple parallel support bars 21 to form the pallet's support surface. The support assembly 3 includes multiple parallel pallet legs 31 located below each support bar 21 and used to support the support bars 21. Each pallet leg 31 and each support bar 21 is connected by a snap-fit ​​assembly 4, and the connection is detachable via the snap-fit ​​assembly 4.

[0054] like Figure 1 ,Figure 4 、 Figure 5 and Figure 6 As shown in the drawings, the support bars 21 are rectangular rod-shaped structures made of plastic material and manufactured integrally by blow molding process. The support bars 21 extend in the left-right direction, and each support bar 21 is arranged in the same horizontal plane and parallel to the front and back, and the end portions of each support bar 21 are flush. Each of the support bars 21 is uniformly distributed with a plurality of weight-reducing holes 22 extending front and back from left to right. The weight-reducing holes 22 are rectangular or circular in shape. The arrangement of the weight-reducing holes 22 can improve the torsional rigidity of the support bars 21, thereby improving the stability and load-carrying capacity of the entire tray. It can also reduce the weight of each support bar 21, reduce manufacturing costs, and improve the convenience and economy of the tray. The top of the support bar 21 has a front / rear arc-shaped flange 23 protruding forward / backward, and the two arc-shaped flanges 23 are symmetrically arranged front and back, and the connecting surface between the top of the two arc-shaped flanges 23 is a horizontal plane. The horizontal plane of the top of each support bar 21 collectively forms the load-carrying surface of the tray, which can increase the contact area between the tray and the goods. The design of the arc-shaped flange 23 allows the tray to be stacked forward and backward by the arc-shaped flanges 23 on the front and back sides of the support bars 21, avoiding relative sliding of adjacent trays when stacking, and improving the safety of the tray in use.

[0055] As shown in the drawings, the support bars 21 are rectangular rod-shaped structures made of plastic material and manufactured integrally by blow molding process. The support bars 21 extend in the left-right direction, and each support bar 21 is arranged in the same horizontal plane and parallel to the front and back, and the end portions of each support bar 21 are flush. Each of the support bars 21 is uniformly distributed with a plurality of weight-reducing holes 22 extending front and back from left to right. The weight-reducing holes 22 are rectangular or circular in shape. The arrangement of the weight-reducing holes 22 can improve the torsional rigidity of the support bars 21, thereby improving the stability and load-carrying capacity of the entire tray. It can also reduce the weight of each support bar 21, reduce manufacturing costs, and improve the convenience and economy of the tray. The top of the support bar 21 has a front / rear arc-shaped flange 23 protruding forward / backward, and the two arc-shaped flanges 23 are symmetrically arranged front and back, and the connecting surface between the top of the two arc-shaped flanges 23 is a horizontal plane. The horizontal plane of the top of each support bar 21 collectively forms the load-carrying surface of the tray, which can increase the contact area between the tray and the goods. The design of the arc-shaped flange 23 allows the tray to be stacked forward and backward by the arc-shaped flanges 23 on the front and back sides of the support bars 21, avoiding relative sliding of adjacent trays when stacking, and improving the safety of the tray in use. Figure 1 、 Figure 7 、 Figure 8 and Figure 9As shown, the tray leg 31 is a front and back extending ladder structure, which makes the tray leg 31 reduce its weight while maintaining the structural strength. It is made of plastic material and integrated by blow molding and compression molding process, which can greatly reduce the overall weight of the tray while ensuring the bearing strength and service life, making the tray convenient to carry and store, while reducing the production cost of the tray. The tray leg 31 includes an upper crossbar 33, a lower crossbar 35, and a plurality of vertical bars 34. The upper crossbar 33 is arranged in parallel above the lower crossbar 35, and the plurality of vertical bars 34 are evenly arranged between the upper crossbar 33 and the lower crossbar 35, and are fixedly connected with the upper crossbar 33 and the lower crossbar 35. Each tray leg 31 is located below the support bar 21 and arranged in parallel left and right. The lower crossbar 35 has two tray feet 32, and each tray foot 32 includes a plurality of arc-shaped protrusions alternately arranged on the left and right sides of the lower crossbar 35. On the basis of the blow molding process, the tray foot 32 and the vertical bar 34 are made by compression molding process to improve their strength and durability. The arrangement of the tray foot 32 can increase the contact area between the tray and the ground, thereby improving the stability of the tray leg 31 and avoiding the tray from shaking and tilting when carrying goods, thereby improving the safety of goods transportation and storage. In this embodiment, the number of tray legs 31 is four, and in other embodiments, the number of tray legs 31 is two, three or five. In addition, in this embodiment, the vertical bar is made by compression molding process, and in other embodiments, the vertical bar is made by blow molding process or a combination of blow molding and compression molding.

[0056] As shown in Figure 3 , Figure 5 , Figure 6 , Figure 8 and Figure 9 , the buckle assembly 4 includes a male buckle structure 41 and a female buckle structure 44. The male buckle structure 41 is located at the upper end of the upper crossbar 33, and the female buckle structure 44 is located at the lower end of the support bar 21. The lower end of the support bar 21 is evenly distributed along the length direction of the support bar 21, and there are four female buckle structures 44, respectively corresponding to the four tray legs 31. The female buckle structure 44 includes a guide block 45 and a lock block 46, which are arranged in a pincer shape and extend in the up and down direction. The guide block 45 and the lock block 46 have a space for the male buckle structure 41 to be inserted and buckled.

[0057] The male buckle structure 41 comprises two positioning inclined surfaces 42, two clamping grooves 43 on the lower side of the upper horizontal rod 33 below the positioning inclined surfaces 42, the two clamping grooves 43 are symmetrically arranged on the left and right sides of the upper horizontal rod 33, and the two positioning inclined surfaces 42 are symmetrically arranged on the left and right sides of the top of the upper horizontal rod 33 and are arranged in an eight-shaped inclined manner from top to bottom, so as to form a pointed part at the top end of the upper horizontal rod 33, which can guide the top end of the tray leg 31 to smoothly enter between the guide block 45 and the locking block 46 when the male buckle structure 41 is inserted into the female buckle structure 44, thereby reducing the resistance when the tray leg 31 is inserted into the female buckle structure 44 of the support strip 21, and further achieving the rapid positioning and connection of the tray leg 31. The locking block 46 is provided with a protrusion 47 matching the shape of the clamping groove 43 near the side of the guide block 45, when the upper horizontal rod 33 is inserted between the guide block 45 and the locking block 46, the protrusion 47 can be clamped into the clamping groove 43 / clamped with the lower side of the upper horizontal rod 33, so as to achieve the locking of the male buckle structure 41 and the female buckle structure 44, prevent the tray leg 31 from separating from the support strip 21 during use, and improve the safety and stability of the tray. The width of the connection between the locking block 46 and the main body of the support strip 21 is narrowed, so that the locking block 46 has a certain elasticity, so as to reduce the difficulty of inserting the male buckle structure 41 into the female buckle structure 44, and the upper and lower widths of the guide block 45 are consistent, and the rigidity and strength are high, so that the guide block 45 will not be deflected and deformed, and thus has good support and stability. When each support strip 21 is installed on the tray leg 31, the installation directions of the adjacent two support strips 21 are opposite, so that the guide blocks 45 on the adjacent two support strips 21 can form opposite support, so as to ensure the overall stability of the tray. In addition, the left and right sides of the upper horizontal rod 33 are symmetrical structures, so that the tray leg 31 does not need to be distinguished when installed, thereby improving the assembly convenience of the tray leg 31 and the support strip 21.

[0058] As shown in Figure 7 and Figure 8 In the present embodiment, the clamping grooves 43 are located at the front and rear ends of the upper horizontal rod 33 and the connection between the upper horizontal rod 33 and the vertical rod 34, and the protrusions 47 are clamped with the lower side of the upper horizontal rod 33 to achieve the buckling of the male buckle structure 41 and the female buckle structure 44; in other embodiments, the protrusions 47 are only clamped with the clamping grooves 43 of the upper horizontal rod 33 to achieve the buckling of the male buckle structure 41 and the female buckle structure 44.

[0059] As shown in Figure 6As shown, in addition, one side of the guide block 45 close to the upper cross bar 33 has a first matching surface 48 matching the corresponding positioning slope 42, and one side of the lock block 46 close to the upper cross bar 33 has a second matching surface 49 matching the corresponding positioning slope 42. When the pin structure 41 of the tray leg 31 is completely inserted into the box structure 44 of the support strip 21, the two positioning slopes 42 of the pin structure 41 are in close contact with the first matching surface 48 and the second matching surface 49 of the box structure 44, respectively. Further, the contact area between the pin structure 41 and the box structure 44 is increased, the connection is more closely, the tray is prevented from shaking during use, and the connection stability between the support strip 21 and the tray leg 31 and the overall carrying capacity of the tray are improved.

[0060] The middle part of the lower end of each support strip 21 has two downward protruding positioning blocks 24, which are used to block and position the tray leg 31 when adjacent trays are stacked in forward and reverse directions, so as to ensure the stability and safety of the tray stack, and avoid problems such as tray tipping caused by uneven stacking.

[0061] The use principle of the tray of the combined blow molding and compression molding process of the present application is summarized as follows:

[0062] By adopting the combined structure, the tray is divided into a plurality of tray legs 31 and support strips 21 connected by the buckle assembly 4, a plurality of support strips 21 are arranged in parallel to form a panel unit, and a bearing assembly 3 is composed of the tray legs 31, so that the tray has the characteristics of simple structure and convenient assembly. When some parts are damaged, the damaged parts can be replaced by releasing the buckle without removing other parts; the plastic material and the integrated blow molding process make the tray have a low manufacturing cost; the tray can also adjust its carrying capacity by adjusting the number of installed support strips 21, so that the tray can flexibly control the cost according to the carrying demand.

[0063] Embodiment 2 of the tray of the combined blow molding and compression molding process of the present application provided by the present application is as follows:

[0064] The main difference between the embodiment 1 and the embodiment 2 is as follows:

[0065] In the embodiment 1, the pin structure is located on the tray leg, and the box structure is located on the support strip.

[0066] In the present embodiment, the upper end of the tray leg has a box structure, and the lower end of the support strip has a matching pin structure.

[0067] According to the above description of the present specification, those skilled in the art can also understand that the terms used such as "upper", "lower", "front", "back", "left", "right", "width", "horizontal", "top", "bottom", "inner", "outer" and the like indicating the orientation or positional relationship are based on the orientation or positional relationship shown in the drawings of the present specification, which are only for the purpose of facilitating the description of the present application and simplifying the description, and are not explicitly or implicitly indicated that the devices or elements involved must have the specific orientation, be constructed and operated in a specific orientation, therefore the above-mentioned orientation or positional relationship terms cannot be understood or interpreted as a limitation on the present application.

[0068] In addition, in the description of the present specification, the meaning of "a plurality of" is at least two, such as two, three or more, etc., unless otherwise explicitly and specifically limited.

Claims

1. A tray for a combined blow and compression molding process, characterized in that, The tray leg and the support bar are connected by a buckle assembly. The front / rear side of the top end of the support bar has a front convexity / rear convexity arc-shaped flange, and the two arc-shaped flanges are arranged symmetrically in front and back, and the connecting surface between the top of the two arc-shaped flanges is a horizontal surface. The tray leg is a ladder-shaped structure extending in front and back, which includes an upper cross bar, a lower cross bar, a plurality of vertical bars and a plurality of tray feet, the upper cross bar is arranged in parallel above the lower cross bar and is fixedly connected and integrally formed by the vertical bars, and the tray feet are located on both sides of the lower cross bar and are integrally formed with the lower cross bar. The extension direction of the support bar is defined as the left-right direction, and the extension direction of the tray leg is defined as the front-back direction. The buckle assembly includes a male buckle structure at the top of the upper cross bar and a female buckle structure at the lower end of the support bar. The female buckle structure includes a guide block and a lock block arranged in a pincer shape, and the guide block and the lock block have a space for inserting the male buckle structure; the male buckle structure includes two positioning inclined surfaces, which are symmetrically arranged on the left and right sides of the top end of the upper cross bar and are inclined in an eight-shaped manner from top to bottom, so as to facilitate the insertion of the upper cross bar between the guide block and the lock block, the guide block extends in the up-down direction and has a consistent up-down width to avoid deformation; the lock block has a protrusion on the top, and the width of the connection between the lock block and the main body of the support bar is narrowed, and the left and right sides of the upper cross bar correspond to the protrusion and are provided with a clamping groove, and the protrusion is used for clamping the lower side of the upper cross bar / clamping the clamping groove to realize the locking of the male buckle structure and the female buckle structure.

2. A tray for a combined blow and compression molding process according to claim 1, characterized in that The side of the guide block close to the upper cross bar has a first matching surface matching the positioning inclined surface corresponding to the tray leg, and the side of the lock block close to the upper cross bar has a second matching surface matching the positioning inclined surface corresponding to the tray leg, so as to enhance the connection stability of the tray leg and the support bar.

3. A tray for a combined blow and compression molding process according to claim 1, wherein, The lower end of the support bar has a plurality of positioning clamping blocks, so as to facilitate the positioning between two adjacent trays when the trays are stacked in front and back.

4. A tray for a combined blow and compression molding process according to claim 3, wherein, The tray feet are arranged at intervals on the left and right sides of the lower cross bar.

5. A tray for a combined blow and compression molding process according to claim 4, characterized in that The tray leg and the support bar are both made of plastic material and are integrally formed by blow molding process, wherein the tray feet are made by compression molding process, and the vertical bars are made by compression molding process / blow molding and compression molding combined process. The support bar has a plurality of weight reduction holes to reduce the overall weight of the tray.

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