A field welding tray forming die

Abstract

The utility model relates to a kind of field welding tray forming die, including upper die assembly and lower die assembly, transverse steel pipe is equipped in lower die assembly, plug-in assembly is equipped between upper die assembly and lower die assembly, stripping mechanism includes guide rail plate, slide and top plate, drive assembly is equipped on guide rail plate, guide rod is equipped on top plate, guide hole is equipped on slide, limit sleeve is equipped on the guide rod;The utility model has the advantages that: by setting transverse steel pipe in lower die assembly, and plug-in assembly is equipped in upper die assembly and lower die assembly, due to the vertical steel pipe and vertical insertion hole of the mutual plug-in of plug-in assembly, upper die assembly and lower die assembly can be inserted into vertical installation hole when closing die, while stripping mechanism realizes the stripping of transverse steel pipe to form horizontal installation hole on tray, so that horizontal installation hole and vertical installation hole can be machined on tray simultaneously during the forming process of field welding tray, overcome the defect of single core-pulling direction.

Description

Technical Field

[0001] This utility model relates to a grid-shaped welding pallet forming mold. Background Technology

[0002] Plastic pallets are industrial double-sided plastic pallets, mainly made of HDPE (high-density polyethylene) or HDPP (high-density polypropylene). They are non-toxic, corrosion-resistant, resistant to high and low temperatures, and have high mechanical strength, making them widely used in food, chemical, warehousing and logistics industries.

[0003] Application No. 2024213277844 discloses a large grid-patterned logistics pallet mold with a secondary slider core-pulling mechanism. When loading goods onto the formed pallet, uneven cargo distribution can lead to uneven stress on the welded pallet surface. Prolonged use can cause deformation or even breakage of the welded parts. Therefore, reinforcing tubes need to be installed inside the pallet to improve its overall service life. Currently, the reinforcing tube mounting holes are machined uniformly on the pallet after injection molding, increasing the workload for operators. The machining of these holes is difficult, and improper operation can easily damage the pallet, significantly increasing production costs. Furthermore, different operator skill levels can lead to deviations in the mounting holes, hindering installation and greatly reducing overall installation efficiency. Additionally, the pallet can only accommodate reinforcing tubes in a single direction, not in a cross-shaped configuration. Utility Model Content

[0004] The purpose of this utility model is to provide a grid-shaped welding pallet forming mold to solve the problem that the existing mold core-pulling structure is simple, can only form unidirectional steel pipes, and cannot form a bidirectional cross steel pipe structure in one go.

[0005] To solve the above-mentioned technical problems, this utility model is achieved through the following technical solution: a grid-shaped welding pallet forming mold, including an upper mold assembly and a lower mold assembly. The lower mold assembly is provided with an ejector mechanism. The lower mold assembly contains three rows of transverse steel pipes. An insertion assembly is provided between the upper mold assembly and the lower mold assembly. The insertion assembly is located between every two adjacent rows of transverse steel pipes. The insertion assembly includes vertical steel pipes that are inserted into each other and vertical insertion holes. The lower mold assembly is provided with a demolding mechanism connected to the transverse steel pipes. The demolding mechanism is located on one side wall of the lower mold assembly. An ejector mechanism is installed on each of the other three side walls of the lower mold assembly. The demolding mechanism includes a guide rail plate, a sliding plate, and a top plate. The guide rail plate is provided with a drive assembly that drives the sliding plate to reciprocate along the guide rail plate. The top plate is provided with a guide rod. The sliding plate is provided with a guide hole that cooperates with the guide rod. The guide rod is provided with a limiting sleeve. One end of the transverse steel pipe is fixedly installed on the sliding plate. When the sliding plate contacts the limiting sleeve, the drive assembly drives the top plate to move to achieve demolding of the top plate.

[0006] Preferably, the drive assembly includes a fixed plate, a hydraulic cylinder, and a slider. The fixed plate is mounted on a guide rail plate, the hydraulic cylinder is mounted on the fixed plate, the hydraulic cylinder has a connecting rod connected to the slider, the slider is movably connected to the guide rail plate, the slider has a fixing groove, the slide plate is fixedly mounted on the fixing groove by a first screw, and a protective pad is provided at one end of the slider facing the top plate.

[0007] Preferably, the slider is provided with a connecting groove that connects to the connecting rod, and the connecting groove is a T-shaped groove, and the connecting rod is provided with an anti-disengagement groove.

[0008] Preferably, the ejection mechanism on the side adjacent to the demolding mechanism is provided with a plurality of reinforcing tubes extending into the lower mold assembly.

[0009] Preferably, the top plate is provided with a groove, and a pressure block is provided on the top plate above the groove, forming a channel between the pressure block and the groove for the transverse steel pipe to pass through.

[0010] Preferably, one end of the transverse steel pipe is provided with a connecting plate, and the sliding plate is provided with an installation groove connected to the connecting plate. The connecting plate is installed in the installation groove by a second screw, and the connecting plate and the transverse steel pipe are an integral structure.

[0011] Preferably, a connection structure is provided between the lower mold assembly and the upper mold assembly. The connection structure includes a connecting shaft and a connecting hole that are connected to each other. The connecting shaft is disposed on the lower mold assembly, and the connecting hole is disposed on the upper mold assembly.

[0012] Preferably, the top end of the connecting shaft is rounded, or / and the bottom end of the connecting hole is chamfered.

[0013] Preferably, both the upper mold assembly and the lower mold assembly are provided with lifting rings and / or hooks.

[0014] Preferably, the grid-shaped welding pallet forming mold further includes a connecting block, one end of which is detachably mounted on the upper mold assembly by a first bolt, and the other end of which is detachably mounted on the lower mold assembly by a second bolt.

[0015] In summary, the advantages of this utility model are as follows: By setting a horizontal steel pipe in the lower mold assembly and setting a plug-in assembly in the upper and lower mold assemblies, and because the plug-in assembly is set as interlocking vertical steel pipes and vertical insertion holes, the upper and lower mold assemblies can be interlocked to form vertical mounting holes when the mold is closed. At the same time, the demolding mechanism demolds the horizontal steel pipe to form a horizontal mounting hole on the pallet. This allows the grid-shaped welded pallet to simultaneously process horizontal and vertical mounting holes on the pallet during the forming process, overcoming the defects of a single core-pulling direction and meeting the manufacturing requirements of complex "grid"-shaped structures. Moreover, by combining vertical hydraulic cylinder core pulling with horizontal mold cavity interlocking, it is not necessary to set up complex hydraulic cylinder core pulling systems in both horizontal and vertical directions, simplifying the mold structure, reducing manufacturing costs, and significantly improving the forming efficiency and structural stability of the product. In addition, setting the plug-in assembly in every two adjacent rows of horizontal steel pipes Therefore, no spatial interference occurs during the molding process, greatly improving molding efficiency. Secondly, the demolding mechanism is set as a structure of guide rail plate, slide plate and top plate. Since one end of the transverse steel pipe is fixedly installed on the slide plate, and the guide rail plate is equipped with a drive component that drives the slide plate to reciprocate along the guide rail plate, demolding only requires the drive component to drive the slide plate to move in the opposite direction along the guide rail plate. The guide rail plate can ensure the straightness of the slide plate movement, thereby improving the demolding quality of the transverse steel pipe. The setting of the guide rod can reduce the lateral movement and vibration of the slide plate in the reciprocating motion, thereby ensuring the stability of the slide plate movement. On the other hand, since the guide rod is equipped with a limit sleeve, it can play a certain limiting function on the travel of the slide plate. When the slide plate contacts the limit sleeve, the top plate can separate from the tray under the action of the drive component. The demolding of the top plate can be achieved without additional driving force, which greatly improves the demolding efficiency. Attached Figure Description

[0016] The present invention will be further described below with reference to the accompanying drawings: Figure 1 This is a schematic diagram of the structure of a grid-shaped welding pallet forming mold according to this utility model; Figure 2 This is a schematic diagram of the lower mold assembly in this utility model; Figure 3 This is a top view of the lower mold assembly in this utility model; Figure 4 for Figure 2 A magnified view of part A in the image; Figure 5 This is a schematic diagram of the upper mold assembly of this utility model; Figure 6 This is a partial schematic diagram of the slider in this utility model; Figure 7 This is a partial schematic diagram of the top plate in this utility model; Figure 8 This is a partial schematic diagram of the docking of the upper mold assembly and the lower mold assembly in this utility model.

[0017] Figure label: 1 Upper mold assembly, 2 Lower mold assembly, 21 Horizontal steel pipe, 22 Connecting plate, 23 Second screw, 24 Reinforcing pipe, 3 Vertical steel pipe, 31 Vertical insertion hole, 4 Ejection mechanism, 5 Demolding mechanism, 50 Guide rail plate, 51 Slide plate, 52 Top plate, 53 Guide rod, 54 Guide hole, 55 Limit sleeve, 56 Groove, 57 Pressure block, 58 Channel, 59 Mounting groove, 6 Drive assembly, 61 Fixing plate, 62 Hydraulic cylinder, 63 Slider, 64 Connecting rod, 65 Fixing groove, 66 First screw, 67 Protective pad, 68 Connecting groove, 69 Anti-detachment groove, 7 Connecting structure, 71 Connecting shaft, 72 Connecting hole, 73 Rounding, 74 Chamfering, 8 Lifting ring, 9 Connecting block, 91 First bolt, 92 Second bolt. Detailed Implementation

[0018] like Figure 1 , Figure 2 , Figure 3 , Figure 4 , Figure 5 , Figure 6 , Figure 7 and Figure 8As shown, a grid-shaped welded pallet forming mold includes an upper mold assembly 1 and a lower mold assembly 2. The lower mold assembly 2 is provided with an ejection mechanism 4. In this embodiment, the upper mold assembly 1, lower mold assembly 2, pallet mold core 3, and ejection mechanism 4 are all prior art, and specific details are not described in this embodiment. The lower mold assembly 2 has three rows of horizontal steel pipes 21. An insertion assembly is provided between the upper mold assembly and the lower mold assembly. The insertion assembly is located between every two adjacent rows of horizontal steel pipes. The insertion assembly includes vertical steel pipes 3 that are inserted into each other and vertical insertion holes 31. In this embodiment, each row of horizontal steel pipes includes at least two steel pipes, and there are six groups of vertical steel pipes, each group including at least three steel pipes. The vertical steel pipes 3 are arranged inside the lower mold assembly 2, and the vertical insertion holes 31 are arranged inside the upper mold assembly 1. The specific structure of the vertical steel pipes is set according to actual needs, including but not limited to one or more of the following: cylindrical, elliptical, and triangular prisms. The lower mold assembly 2 is provided with a demolding mechanism 5, which is arranged on one side wall of the lower mold assembly 2. A demolding mechanism 5 is installed on the other three side walls of the lower mold assembly 2. An ejection mechanism 4, adjacent to the demolding mechanism, is equipped with several reinforcing tubes 24 extending into the lower mold assembly. Specifically, the ejection mechanism includes an ejection plate, and the reinforcing tubes 24 are mounted on the ejection plate. They can demold and close with the movement of the ejection mechanism, further improving demolding efficiency. Mounting holes are provided in both the front-back and left-right directions of the tray. The reinforcing tubes are mounted on the ejection plate with screws. The number of reinforcing tubes can be set according to actual needs. In this embodiment, three sets are provided, each set with at least two tubes, and one of them is located in the lower mold assembly. In the ejection mechanism, the demolding mechanism 5 includes a guide rail plate 50, a slide plate 51, and a top plate 52. The guide rail plate 50 is provided with a drive assembly 6 that drives the slide plate 51 to reciprocate along the guide rail plate 50. The top plate 52 is provided with a guide rod 53. The slide plate 51 is provided with a guide hole 54 that cooperates with the guide rod 53. The guide rod 53 is provided with a limiting sleeve 55. One end of the transverse steel pipe 21 is fixedly installed on the slide plate 51. When the slide plate 51 contacts the limiting sleeve 55, the drive assembly 6 drives the top plate 52 to move, thereby demolding the top plate 52.

[0019] By incorporating transverse steel pipes within the lower mold assembly and inserting components within both the upper and lower mold assemblies, and by using interlocking vertical steel pipes and vertical insertion holes in these components, the upper and lower mold assemblies can be aligned to form vertical mounting holes during mold closing. Simultaneously, the demolding mechanism demolds the transverse steel pipes, creating transverse mounting holes on the pallet. This allows the grid-shaped welded pallet to simultaneously machine both transverse and vertical mounting holes during the forming process, overcoming the limitations of a single core-pulling direction and meeting the manufacturing requirements of complex grid-shaped structures. Furthermore, by combining vertical hydraulic cylinder core pulling with transverse mold cavity interlocking, the complex hydraulic cylinder core-pulling system in both horizontal and vertical directions is eliminated, simplifying the mold structure, reducing manufacturing costs, and significantly improving product forming efficiency and structural stability. Additionally, by placing the inserting components between every two adjacent rows of transverse steel pipes, therefore… Firstly, no spatial interference occurs during the molding process, greatly improving molding efficiency. Secondly, the demolding mechanism is set up as a structure of guide rail plate, slide plate, and top plate. Since one end of the transverse steel pipe is fixedly installed on the slide plate, and the guide rail plate is equipped with a drive component that drives the slide plate to reciprocate along the guide rail plate, demolding only requires the drive component to drive the slide plate to move in the opposite direction along the guide rail plate. The guide rail plate can ensure the straightness of the slide plate movement, thereby improving the demolding quality of the transverse steel pipe. The setting of the guide rod can reduce the lateral movement and vibration during the reciprocating motion of the slide plate, thereby ensuring the stability of the slide plate movement. On the other hand, since the guide rod is equipped with a limiting sleeve, it can play a certain limiting function on the travel of the slide plate. When the slide plate contacts the limiting sleeve, the top plate can separate from the tray under the action of the drive component. The demolding of the top plate can be achieved without additional driving force, greatly improving demolding efficiency.

[0020] The driving assembly 6 includes a fixed plate 61, a hydraulic cylinder 62, and a slider 63. The fixed plate 61 is mounted on the guide rail plate 50, and the hydraulic cylinder 62 is mounted on the fixed plate 61. The hydraulic cylinder 62 has a connecting rod 64 connected to the slider 63. The slider 63 is movably connected to the guide rail plate 50. By configuring the driving assembly 6 with the structure of the fixed plate 61, the hydraulic cylinder 62, and the slider 63, the fixed plate 61 can improve the fixing quality of the hydraulic cylinder 62. Since the slider 63 is movably connected to the guide rail plate 50, the extension and contraction of the hydraulic cylinder 62 drives the slider 63 to reciprocate on the guide rail plate 50, thereby driving the slide plate 51 to reciprocate along the guide rail plate 50. The entire action has a fast response speed, ensuring the straightness of the slide plate 51's movement on the guide rail plate 50. In this embodiment, the hydraulic cylinder 62 can be configured with multiple sets, but two sets are preferred in this embodiment. During mold closing, the hydraulic cylinder drives the slider to slide on the guide rail plate. After the transverse steel pipe is installed, the top plate achieves mold closing under the action of the slider. The slider 63 is provided with a connecting groove 68 that connects to the connecting rod 64, and the connecting groove 68 is a T-shaped groove. The connecting rod 64 is provided with an anti-detachment groove 69. The connecting groove 68 simplifies the installation structure between the connecting rod 64 and the slider 63 and improves the installation efficiency of the connecting rod 64 and the slider 63. Since the connecting groove 68 is a T-shaped groove and the connecting rod 64 is provided with an anti-detachment groove 69, the installation quality of the connecting rod 64 and the slider 63 can be improved, preventing the connecting rod 64 from falling off during demolding and mold closing. The slider 63 is provided with a fixing groove 65, and the slide plate 51 is fixedly installed on the fixing groove 65 by a first screw 66. The end of the slider 63 facing the top plate 52 is provided with a protective pad 67. The setting of the fixing groove 65 facilitates the installation and fixing of the slide plate 51. In this embodiment, the protective pad 67 is a rubber pad, which can reduce the impact force between the slider 63 and the top plate 52 and improve the service life of the top plate 52.

[0021] The top plate 52 is provided with a groove 56, and a pressure block 57 is provided on the top plate 52 above the groove 56. A channel 58 for the transverse steel pipe 21 to pass through is formed between the pressure block 57 and the groove 56. The arrangement of the groove 56 and the pressure block 57 can form a channel 58 for the transverse steel pipe 21 to pass through on the top plate 52, which can ensure the straightness of the installation of the transverse steel pipe 21. In addition, it can ensure that the transverse steel pipe 21 is smoothly pulled out or pushed into the tray mold core 3, thereby improving the demolding quality of the transverse steel pipe 21. In this embodiment, the pressure block 57 is installed on the top plate 52 by countersunk screws. One end of the transverse steel pipe 21 is provided with a connecting plate 22, and the sliding plate 51 is provided with an installation groove 59 connected to the connecting plate 22. The connecting plate 22 is installed in the installation groove 59 by a second screw 23. The connecting plate 22 and the transverse steel pipe 21 are an integral structure. The setting of the connecting plate 22 can increase the contact area between the transverse steel pipe 21 and the sliding plate 51, and improve the fixing quality of the transverse steel pipe 21. The setting of the installation groove 59 can prevent the transverse steel pipe 21 from shaking and ensure the straightness of the transverse steel pipe 21 after installation. On the other hand, it can improve the installation efficiency of the connecting plate 22. Furthermore, setting the connecting plate 22 and the transverse steel pipe 21 as an integral structure can simplify the installation process between the connecting plate 22 and the transverse steel pipe 21 and improve the connection strength between the connecting plate 22 and the transverse steel pipe 21.

[0022] A connecting structure 7 is provided between the lower mold assembly 2 and the upper mold assembly 1. The connecting structure 7 includes a connecting shaft 71 and a connecting hole 72 that are connected to each other. The connecting shaft 71 is disposed on the lower mold assembly 2, and the connecting hole 72 is disposed on the upper mold assembly 1. By setting the connecting structure 7 to connect the connecting shaft 71 and the connecting hole 72, the lower mold assembly 2 and the upper mold assembly 1 can be precisely aligned and guided during mold closing and opening, which can improve the structural stability of the entire pallet forming device. Alternatively, the connecting shaft 71 can be disposed on the upper mold assembly 1, and the connecting hole 72 can be disposed on the lower mold assembly 2 to meet different installation requirements. The top end of the connecting shaft 71 is rounded 73, and the bottom end of the connecting hole 72 is chamfered 74. The rounded corners and chamfers 74 help reduce the difficulty of inserting the connecting shaft 71 into the connecting hole 72, so that the upper mold assembly 1 and the lower mold assembly 2 can be installed smoothly during positioning and installation, which helps to reduce the connection difficulty between the upper mold assembly 1 and the lower mold assembly 2.

[0023] Both the upper mold assembly 1 and the lower mold assembly 2 are equipped with lifting rings 8, facilitating connection between the upper mold assembly 1 and the lower mold assembly 2 and the lifting equipment, thus improving the safety and operational efficiency of the lifting process. The grid-shaped welded pallet forming mold also includes a connecting block 9. One end of the connecting block 9 is detachably mounted on the upper mold assembly 1 via a first bolt 91, and the other end of the connecting block 9 is detachably mounted on the lower mold assembly 2 via a second bolt 92. The connecting block 9 integrates the upper mold assembly 1 and the lower mold assembly 2 into a single unit, facilitating the lifting of the entire pallet forming device and preventing separation of the upper mold assembly 1 and the lower mold assembly 2 during lifting. Furthermore, the first bolt 91 and the second bolt 92 facilitate the installation and disassembly of the connecting block 9, improving the installation quality of the connecting block 9. Specifically, both the upper mold assembly 1 and the lower mold assembly 2 are provided with threaded holes, and the connecting block 9 is provided with through holes. The first bolt 91 and the second bolt 92 pass through the through holes and are then fixed within the threaded holes.

[0024] In addition to the preferred embodiments described above, there are other embodiments of this utility model. Those skilled in the art can make various changes and modifications based on this utility model. As long as they do not depart from the spirit of this utility model, they should all fall within the scope defined by the appended claims.

Claims

1. A grid-patterned welding pallet forming mold, comprising an upper mold assembly and a lower mold assembly, wherein the lower mold assembly is provided with an ejection mechanism, characterized in that: The lower mold assembly contains three rows of horizontal steel pipes. An insertion assembly is provided between the upper mold assembly and the lower mold assembly, located between every two adjacent rows of horizontal steel pipes. The insertion assembly includes interlocking vertical steel pipes and vertical insertion holes. The lower mold assembly is equipped with a demolding mechanism connected to the horizontal steel pipes. This demolding mechanism is located on one side wall of the lower mold assembly, and an ejection mechanism is installed on each of the other three side walls. The demolding mechanism includes a guide rail plate, a sliding plate, and a top plate. The guide rail plate is equipped with a drive assembly that drives the sliding plate to reciprocate along the guide rail plate. The top plate is equipped with a guide rod, and the sliding plate is equipped with a guide hole that mates with the guide rod. The guide rod is equipped with a limiting sleeve. One end of each horizontal steel pipe is fixedly installed on the sliding plate. When the sliding plate contacts the limiting sleeve, the drive assembly drives the top plate to move, thus demolding the top plate.

2. The grid-shaped welding pallet forming mold according to claim 1, characterized in that: The drive assembly includes a fixed plate, a hydraulic cylinder, and a slider. The fixed plate is mounted on a guide rail plate, and the hydraulic cylinder is mounted on the fixed plate. The hydraulic cylinder has a connecting rod connected to the slider. The slider is movably connected to the guide rail plate and has a fixing groove. The slide plate is fixedly mounted on the fixing groove by a first screw. A protective pad is provided at one end of the slider facing the top plate.

3. The grid-shaped welding pallet forming mold according to claim 2, characterized in that: The slider is provided with a connecting groove that connects to the connecting rod, and the connecting groove is a T-shaped groove. The connecting rod is provided with an anti-disengagement groove.

4. The grid-shaped welding pallet forming mold according to claim 1, characterized in that: The ejection mechanism, located on the side adjacent to the demolding mechanism, is provided with several reinforcing tubes that extend into the lower mold assembly.

5. The grid-shaped welding pallet forming mold according to claim 1, characterized in that: The top plate is provided with a groove, and a pressure block is provided on the top plate above the groove, forming a channel between the pressure block and the groove for a transverse steel pipe to pass through.

6. The grid-shaped welding pallet forming mold according to claim 1, characterized in that: One end of the transverse steel pipe is provided with a connecting plate, and the sliding plate is provided with an installation groove connected to the connecting plate. The connecting plate is installed in the installation groove by a second screw, and the connecting plate and the transverse steel pipe are an integral structure.

7. The grid-shaped welding pallet forming mold according to claim 1, characterized in that: A connection structure is provided between the lower mold assembly and the upper mold assembly. The connection structure includes a connecting shaft and a connecting hole that are connected to each other. The connecting shaft is disposed on the lower mold assembly, and the connecting hole is disposed on the upper mold assembly.

8. The grid-shaped welding pallet forming mold according to claim 7, characterized in that: The top end of the connecting shaft is rounded, or / and the bottom end of the connecting hole is chamfered.

9. The grid-shaped welding pallet forming mold according to claim 1, characterized in that: Both the upper mold assembly and the lower mold assembly are equipped with lifting rings and / or hooks.

10. A grid-shaped welding pallet forming mold according to claim 9, characterized in that: The grid-shaped welding pallet forming mold also includes a connecting block. One end of the connecting block is detachably mounted on the upper mold assembly by a first bolt, and the other end of the connecting block is detachably mounted on the lower mold assembly by a second bolt.

Images