Vertical polyurethane coated guide wheel cost improvement tooling

Abstract

This utility model discloses a cost-improving tooling for vertical polyurethane-coated guide wheels, relating to the technical field of polyurethane-coated guide wheel tooling. It includes an outer cylindrical mold, with a base end cap connected to the bottom of the outer cylindrical mold and a base end cap connected to the top of the base end cap. A metal wheel core is fitted inside the outer cylindrical mold, directly above the base end cap. The outer wall of the metal wheel core and the outer cylindrical mold form a mold cavity. Both the upper and lower ends of the metal wheel core abut against end mold caps. This utility model, through a vertical structure combined with optimization of the base end cap, base end cap, and material conveying cavity, achieves uniform injection and sealed molding of polyurethane, effectively eliminating air bubbles, reducing the use of sealant, and lowering the pouring height, avoiding multiple roughing operations. Positioning rods and external positioning rods ensure component alignment accuracy and improve the surface quality of the guide wheel. Simultaneously, the single-sided allowance control of the mold cavity reduces material consumption, simplifying the overall process and significantly improving production costs and efficiency.

Description

Technical Field

[0001] This utility model relates to the field of polyurethane-coated guide wheel tooling technology, specifically a cost-improving tooling for vertical polyurethane-coated guide wheels. Background Technology

[0002] Polyurethane-coated guide wheels are industrial components with a metal wheel core and a polyurethane (PU) elastomer layer on the surface. They combine high strength and functionality. The polyurethane coating significantly improves the wear resistance of the guide wheel, making it especially suitable for high-frequency or heavy-load scenarios (such as automated warehouse stacker crane track guidance). It has good resistance to grease, chemicals and acid and alkali environments, ensuring stability under complex working conditions.

[0003] Currently, polyurethane-coated guide wheels use a horizontal open casting method, and the mold is manufactured using sheet metal bending. This design process has the problem of material waste, and there are air bubbles on the surface. The side end caps need to be sealed with glue, and the high pouring gate requires multiple rough machining operations. There is a lot of allowance on one side, and the cost of polyurethane coating material is high and there are many processes. Therefore, a cost-improving tooling for vertical polyurethane-coated guide wheels is proposed. Utility Model Content

[0004] Based on this, the purpose of this utility model is to provide a cost-effective tooling for vertical polyurethane-coated guide wheels to solve the technical problems mentioned in the background above.

[0005] To achieve the above objectives, this utility model provides the following technical solution: a cost-improving tooling for a vertical polyurethane-coated guide wheel, comprising an outer cylindrical mold, a base end cover connected to the bottom of the outer cylindrical mold, a base end cover connected to the top of the base end cover, a metal wheel core sleeved inside the outer cylindrical mold directly above the base end cover, the outer wall of the metal wheel core forming a mold cavity with the outer cylindrical mold, and end mold covers abutting both the upper and lower ends of the metal wheel core;

[0006] A positioning rod is provided between the two sets of end mold covers, and both ends of the positioning rod extend to the other end of the positioning rod. A material inlet hole is opened at the bottom of the base end cover, and a pouring nozzle connected to the material inlet hole is connected to the bottom of the base end cover.

[0007] As a preferred technical solution, two sets of lifting rods are provided above the outer cylinder mold. The bottom of the two sets of lifting rods is fixed with a plug seat that is sleeved on the outer wall of the positioning rod and abuts against the upper end of the end mold cover. The top of the plug seat is sleeved with a locking pressure plate connected to the top of the end mold cover.

[0008] As a preferred technical solution, the outer wall of the lower cover of the base end and the top of the upper cover of the base end form a conveying cavity. The conveying cavity is provided with three sets of conveying channels connected to the inlet hole. The top of the three sets of conveying channels is fixed with a guide ring inside the conveying cavity. The top of the guide ring is provided with an outlet hole connected to each set of conveying channels.

[0009] As a preferred technical solution, the outer wall of the outer cylinder mold is fixed with a positioning ring that abuts against the upper end of the base end cover, and the positioning ring is fixed to the upper end of the base end cover with bolts.

[0010] As a preferred technical solution, both sets of end mold covers are provided with a sealing ring at the end near the metal wheel core, and the end face of each end mold cover is provided with a sealing groove for placing the sealing ring.

[0011] As a preferred technical solution, two sets of external positioning rods parallel to the axis are fixed at the top edge of the base end cover, and the positioning ring has holes that are adapted to the external positioning rods.

[0012] In summary, the present invention has the following main advantages:

[0013] This invention achieves uniform injection and sealed molding of polyurethane through a vertical structure combined with the optimization of the upper and lower covers of the base end and the material conveying cavity. This effectively eliminates air bubbles, reduces the use of sealant, and lowers the pouring height, avoiding multiple roughing operations. The positioning rod and external positioning rod ensure the alignment accuracy of the components and improve the surface quality of the guide wheels. At the same time, the single-sided allowance control of the mold cavity reduces material consumption. The overall process is simplified, and production costs and efficiency are greatly improved. Attached Figure Description

[0014] Figure 1 This is a three-dimensional structural diagram of the present invention;

[0015] Figure 2 This is a schematic diagram of the unfolded structure of this utility model;

[0016] Figure 3 This is a cross-sectional structural diagram of the present invention;

[0017] Figure 4 This is a front sectional view of the outer cylinder mold of this utility model;

[0018] Figure 5 This is a three-dimensional structural diagram of the lifting rod of this utility model;

[0019] Figure 6 This is a three-dimensional structural diagram of the base end cover of this utility model.

[0020] In the diagram: 100, outer cylinder mold; 101, positioning ring; 112, material inlet; 110, upper cover of base end; 111, outer positioning rod; 120, lifting rod; 121, plug-in connector; 122, irregular plate; 123, locking pressure plate; 130, positioning rod; 140, end mold cover; 141, sealing ring; 150, metal wheel core; 160, lower cover of base end; 170, pouring nozzle; 180, mold cavity;

[0021] 200, feeding chamber; 210, guide ring; 220, discharge hole; 230, feeding channel. Detailed Implementation

[0022] The technical solutions of the present invention will be clearly and completely described below with reference to the accompanying drawings. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain the present invention, and should not be construed as limiting the present invention.

[0023] The embodiments of this utility model will be described below based on its overall structure.

[0024] A cost-improving tooling for vertical polyurethane-coated guide wheels, such as... Figures 1 to 6 As shown, it includes an outer cylindrical mold 100, with a base end cover 110 connected to the bottom of the outer cylindrical mold 100 and a base end cover 160 connected to the top of the base end cover 110. A metal wheel core 150 is fitted inside the outer cylindrical mold 100 directly above the base end cover 160. The outer wall of the metal wheel core 150 and the outer cylindrical mold 100 form a mold cavity 180. Both the upper and lower ends of the metal wheel core 150 abut against end mold covers 140.

[0025] A positioning rod 130 is provided between the two sets of end mold covers 140. Both ends of the positioning rod 130 extend to the other end of the positioning rod 130. A material inlet hole 112 is provided at the bottom of the base end cover 110. A pouring nozzle 170 that communicates with the material inlet hole 112 is connected to the bottom of the base end cover 110.

[0026] Two sets of lifting rods 120 are provided above the outer cylinder mold 100. The bottom of the two sets of lifting rods 120 is fixed with a plug seat 121 that is sleeved on the outer wall of the positioning rod 130 and abuts against the upper end of the end mold cover 140. The top of the plug seat 121 is sleeved with a locking pressure plate 123 connected to the top of the end mold cover 140.

[0027] The outer wall of the lower cover 160 of the base end and the top of the upper cover 110 of the base end form a conveying cavity 200. The conveying cavity 200 is provided with three sets of conveying channels 230 connected to the inlet hole 112. The top of the three sets of conveying channels 230 is fixed with a guide ring 210 inside the conveying cavity 200. The top of the guide ring 210 is provided with an outlet hole 220 connected to each set of conveying channels 230.

[0028] It is worth noting that the upper cover 110 of the base end is screwed through the lower cover 160 of the base end and connected to the bottom of the positioning rod 130. The locking plate 123 is also fixed to the end face of the upper end mold cover 140 with bolts. The top of the locking plate 123 is provided with a special-shaped plate that is sleeved on the outside of the two sets of lifting rods 120 and fixed with bolts.

[0029] The outer wall of the outer cylinder mold 100 is fixed with a positioning ring 101 that abuts against the upper end of the base end cover 110. The positioning ring 101 is fixed to the upper end of the base end cover 110 by bolts.

[0030] Two sets of external positioning rods 111 parallel to the axis are fixed on the top of the base end cover 110 near the edge. The positioning ring 101 has holes that are adapted to the external positioning rods 111.

[0031] Before pouring, the metal wheel core 150 needs to be placed into the outer mold cylinder 100 and then placed into the upper end mold cover 140 via the lifting rod to complete the construction of the mold cavity 180.

[0032] Liquid polyurethane is delivered into the material delivery chamber 200 through the pouring nozzle 170. The liquid polyurethane enters the three sets of guide rings 210 through the material delivery channel 230. After being evenly distributed, it flows into the top of the guide rings 210 through the discharge hole 220 and forms a ring. As the liquid polyurethane is injected, its horizontal level gradually rises and eventually enters the mold cavity 180, filling the gap between the metal wheel core 150 and the outer cylinder mold 100, thus completing the pouring step.

[0033] As per the instruction manual Figure 6 As shown, the liquid polyurethane entering the conveying chamber 200 through the pouring nozzle 170 and the inlet hole 112 will enter the three sets of conveying channels 230 respectively, and finally flow to the top of the guide ring 210. The solidified polyurethane has a set of residual material in the conveying chamber 200 (the residual material composed of the three sets of conveying channels 230), thereby reducing the waste of the pouring material.

[0034] After the polyurethane has cured and formed in the mold cavity 180, loosen the locking plate 123 and the plug-in seat 121, lift the upper mold cover 140 using the lifting rod 120, then remove the bolts of the positioning ring 101, remove the outer cylinder mold 100, and the coated guide wheel can be taken out. This vertical design avoids the waste of liquid material in horizontal pouring, reduces roughing allowance, and significantly reduces the cost of polyurethane materials and processing steps.

[0035] By optimizing the vertical structure combined with the upper cover 110 at the base end, the lower cover 160 at the base end, and the material conveying chamber 200, uniform injection and closed molding of polyurethane are achieved, effectively eliminating air bubbles, reducing the use of sealant, and lowering the pouring height to avoid multiple roughing operations.

[0036] Positioning rod 130 and outer positioning rod 111 ensure the alignment accuracy of the components and improve the surface quality of the guide wheel. At the same time, the single-sided allowance control of the mold cavity 180 reduces material consumption, simplifies the overall process, and greatly improves production costs and efficiency.

[0037] Please refer to this carefully. Figure 4 Both sets of end mold caps 140 are provided with sealing rings 141 at the end near the metal wheel core 150, and the end face of the end mold caps 140 is provided with sealing grooves for placing the sealing rings 141.

[0038] Ensure a seal at the connection between the end mold cover 140, the base end cover 160, and the locking plate 123, thereby reducing waste generation.

[0039] In use, liquid polyurethane is delivered into the material delivery chamber 200 through the pouring nozzle 170. The liquid polyurethane enters the three sets of guide rings 210 through the material delivery channel 230. After being evenly distributed, it flows into the top of the guide rings 210 through the discharge hole 220 and forms a ring. As the liquid polyurethane is injected, its horizontal level gradually rises and eventually enters the mold cavity 180, filling the gap between the metal wheel core 150 and the outer cylinder mold 100, thus completing the pouring step.

[0040] After the polyurethane has cured and formed in the mold cavity 180, the locking plate 123 and the plug-in seat 121 are loosened, the upper mold cover 140 is lifted by the lifting rod 120, the bolts of the positioning ring 101 are removed, the outer cylinder mold 100 is removed, and the coated guide wheel can be taken out. The parts not involved in this device are the same as or can be implemented by existing technology.

[0041] Although embodiments of the present invention have been shown and described, these specific embodiments are merely explanations of the present invention and are not intended to limit the invention. The specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples. After reading this specification, those skilled in the art may make modifications, substitutions, and variations to the embodiments as needed without departing from the principles and spirit of the present invention, provided that such modifications, substitutions, and variations are within the scope of the claims of the present invention and are protected by patent law.

Claims

1. A cost-improving tooling for vertical polyurethane-coated guide wheels, comprising an outer cylindrical mold (100), characterized in that: The bottom of the outer cylindrical mold (100) is connected to a base end cover (110), and the top of the base end cover (110) is connected to a base end cover (160). A metal wheel core (150) is fitted inside the outer cylindrical mold (100) directly above the base end cover (160). The outer wall of the metal wheel core (150) and the outer cylindrical mold (100) form a mold cavity (180). The upper and lower ends of the metal wheel core (150) abut against end mold covers (140). A positioning rod (130) is provided between the two sets of end mold covers (140). Both ends of the positioning rod (130) extend to the other end of the positioning rod (130). A material inlet hole (112) is provided at the bottom of the base end cover (110). A pouring nozzle (170) that communicates with the material inlet hole (112) is connected to the bottom of the base end cover (110).

2. The cost-improving tooling for vertical polyurethane-coated guide wheels according to claim 1, characterized in that: Two sets of lifting rods (120) are provided above the outer cylinder mold (100). The bottom of the two sets of lifting rods (120) is fixed with a plug seat (121) that is sleeved on the outer wall of the positioning rod (130) and abuts against the upper end of the end mold cover (140). The top of the plug seat (121) is sleeved with a locking pressure plate (123) connected to the top of the end mold cover (140).

3. The cost-improving tooling for vertical polyurethane-coated guide wheels according to claim 1, characterized in that: The outer wall of the lower cover (160) of the base end and the top of the upper cover (110) of the base end form a conveying cavity (200). The conveying cavity (200) is provided with three sets of conveying channels (230) connected to the inlet hole (112). The top of the three sets of conveying channels (230) is fixed with a guide ring (210) inside the conveying cavity (200). The top of the guide ring (210) is provided with an outlet hole (220) connected to each set of conveying channels (230).

4. The cost-improving tooling for vertical polyurethane-coated guide wheels according to claim 1, characterized in that: The outer wall of the outer cylindrical mold (100) is fixed with a positioning ring (101) that abuts against the upper end of the base end cover (110). The positioning ring (101) is fixed to the upper end of the base end cover (110) by bolts.

5. The cost-improving tooling for vertical polyurethane-coated guide wheels according to claim 1, characterized in that: Both sets of end mold covers (140) are provided with a sealing ring (141) at one end near the metal wheel core (150), and the end face of the end mold cover (140) is provided with a sealing groove for placing the sealing ring (141).

6. The cost-improving tooling for a vertical polyurethane-coated guide wheel according to claim 4, characterized in that: Two sets of external positioning rods (111) parallel to the axis are fixed at the top edge of the base end cover (110), and the positioning ring (101) has holes that are adapted to the external positioning rods (111).

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