Hydraulic oil tank shell and hydraulic oil tank of injection molding machine
Patent Information
- Application Number
- CN202522390277.6
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-11-11
- Publication Date
- 2026-10-09
- Estimated Expiration
- 2035-11-11
AI Technical Summary
[0005]本实用新型的主要目的是提出一种注塑机的液压油箱壳及液压油箱，旨在解决因人工焊接导致的焊缝质量不稳定、生产效率低下的问题，
通过机器人满焊工艺在油箱顶板、油箱底板、前折立板、后折立板之间的连接处覆上机器人满焊层，实现了焊缝均匀、连续且无漏焊的高强度、高质量连接，提升了液压油箱壳的结构稳定性与密封性能，同时有效避免了传统人工焊接因操作差异导致的焊缝不均、气孔夹渣等缺陷，进一步保障了产品的一致性和可靠性。采用机器人满焊层以确保箱体整体密封可靠，同时降低人工焊接带来的质量影响，使注塑机的液压油箱壳适用于高压工况下的长期运行。
Smart Images
Figure CN224835598U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of injection molding machine technology, and in particular to a hydraulic oil tank shell and hydraulic oil tank for an injection molding machine. Background Technology
[0002] Injection molding machines, as one of the core pieces of equipment in modern manufacturing, are used in numerous key industries, including daily necessities, packaging, automobiles, and electronics. The stability and reliability of injection molding machines directly affect the production quality and efficiency of molded products. Within the structure of an injection molding machine, the hydraulic tank is a crucial component of the hydraulic system. The hydraulic tank holds pressurized oil, ensuring sufficient oil support during machine operation. To prevent leakage under long-term pressure and vibration conditions, all connections on the tank's external contour must be fully welded for secure connection. However, currently, this welding process is primarily done manually.
[0003] Because welding quality is highly dependent on the individual skills and experience of the operators, the weld formation, penetration depth, and uniformity vary greatly, making it difficult to consistently guarantee the product yield. Furthermore, manual welding is slow and susceptible to factors such as worker fatigue and mood, resulting in an unstable production rhythm that struggles to meet production demands. In addition, the rework, repairs, and even scrap caused by inconsistent welding quality further increase production costs and time losses.
[0004] Therefore, there is an urgent need for a hydraulic oil tank structure for injection molding machines that can ensure stable welding quality, improve production efficiency, and reduce reliance on manual labor. Utility Model Content
[0005] The main objective of this invention is to provide a hydraulic oil tank shell and hydraulic oil tank for an injection molding machine, aiming to solve the problems of unstable weld quality and low production efficiency caused by manual welding. To achieve the above objectives, the hydraulic oil tank housing for an injection molding machine proposed in this utility model includes: Fuel tank top plate, fuel tank bottom plate, front folding upright plate, and rear folding upright plate; The two sides of the front folding plate are fixedly connected to the two sides of the rear folding plate by a robot full welding layer to form the side wall of the oil tank. The bottom edge of the side wall of the oil tank is fixedly connected to the bottom plate of the oil tank by a robot full weld layer, and the top edge of the side wall of the oil tank is fixedly connected to the top plate of the oil tank by a robot full weld layer, forming a hydraulic oil tank shell; The interior of the hydraulic oil tank shell forms an oil tank cavity that accommodates the return oil pipe and the extraction oil pipe.
[0006] In one embodiment, the top plate, bottom plate, front folding plate, and rear folding plate of the fuel tank are all provided with manual spot welding parts; The manual spot welding parts on both sides of the front folding plate are correspondingly spot welded to the manual spot welding parts on both sides of the rear folding plate to form a first initial positioning structure. The manual spot welding part on the bottom edge of the side wall of the oil tank is spot welded to the manual spot welding part on the upper surface of the bottom plate of the oil tank to form a second initial positioning structure. The manual spot welding part on the top edge of the side wall of the oil tank is spot welded to the corresponding manual spot welding part on the lower surface of the top plate of the oil tank to form a third initial positioning structure.
[0007] In one embodiment, the robot full-weld layer covers the first initial positioning structure, the second initial positioning structure, the third initial positioning structure, the connecting seam between the front folding plate and the rear folding plate, the connecting seam between the tank sidewall and the tank top plate, and the connecting seam between the tank sidewall and the tank bottom plate.
[0008] In one embodiment, a first return oil pipe hole and a second return oil pipe hole are provided on one folded surface of the rear folding plate; a third return oil pipe hole, a fourth return oil pipe hole and an oil extraction pipe hole are provided on the other folded surface of the rear folding plate.
[0009] In one embodiment, the top plate of the fuel tank is provided with a fuel tank opening.
[0010] This utility model also proposes a hydraulic oil tank for an injection molding machine, comprising: The return oil pipe, the extraction oil pipe, and the hydraulic oil tank housing of the aforementioned injection molding machine; The return oil pipe and the sucker oil pipe are housed in the oil tank cavity of the hydraulic oil tank shell. One end of the return oil pipe and the sucker oil pipe penetrates the side wall of the oil tank and extends from the oil tank cavity to the outside of the hydraulic oil tank shell.
[0011] In one embodiment, the hydraulic oil tank of the injection molding machine includes a main return oil pipe, a filter return oil pipe, an injection stage waste oil return oil pipe, and a hydraulic motor return oil pipe; The main return oil pipe passes through the first return oil pipe hole of the rear folding plate of the hydraulic oil tank shell; the filter return oil pipe passes through the second return oil pipe hole of the rear folding plate; the waste oil return oil pipe of the injection station passes through the third return oil pipe hole of the rear folding plate; and the hydraulic motor return oil pipe passes through the fourth return oil pipe hole of the rear folding plate.
[0012] In one embodiment, the hydraulic oil tank of the injection molding machine further includes a reinforcing ring, a connecting pipe, and an oil filter flange; The oil extraction tube passes through the oil extraction tube hole of the rear folding plate; The connecting pipe passes through the oil extraction pipe hole and is sleeved on the outside of the oil extraction pipe. The end of the connecting pipe located outside the hydraulic oil tank is connected to the oil filter flange. The reinforcing ring is sleeved on the outside of one end of the connecting pipe that extends out of the rear folding plate, and is fixedly connected to the rear folding plate.
[0013] In one embodiment, the hydraulic oil tank of the injection molding machine further includes an oil tank pad for fixing the oil tank sealing cover and a filter seat for fixing the filter; The tank pad is fixed to the side of the tank top plate away from the tank cavity and is located at the tank opening of the tank top plate; The filter seat is fixed to the outside of the folded surface of the rear folded plate where the second return oil pipe hole is opened.
[0014] In one embodiment, the hydraulic oil tank of the injection molding machine further includes a first switch connected to an oil temperature sensor and a second switch connected to an oil tank filter; The first Su Jie is fixedly connected to the end of the filter return oil pipe away from the oil tank cavity; the second Su Jie is fixed to the outside of the folded surface of the rear folding plate where the second return oil pipe hole is opened.
[0015] Compared with the prior art, the beneficial effects of this utility model are: By employing a robotic full-welding process to coat the joints between the top plate, bottom plate, front folding plate, and rear folding plate of the hydraulic tank with a robotic full-weld layer, a high-strength, high-quality connection with uniform, continuous, and leak-free welds is achieved. This enhances the structural stability and sealing performance of the hydraulic tank shell, while effectively avoiding defects such as uneven welds, porosity, and slag inclusions caused by operational differences in traditional manual welding, further ensuring product consistency and reliability. The robotic full-weld layer ensures reliable overall sealing of the tank while reducing the quality impact of manual welding, making the hydraulic tank shell of the injection molding machine suitable for long-term operation under high-pressure conditions. Attached Figure Description
[0016] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on the structures shown in these drawings without creative effort.
[0017] Figure 1 A schematic diagram of a structure of an embodiment of the hydraulic oil tank shell of the injection molding machine provided by this utility model; Figure 2 Another structural schematic diagram of an embodiment of the hydraulic oil tank shell of the injection molding machine provided by this utility model; Figure 3 A schematic diagram of a structure of an embodiment of the hydraulic oil tank of an injection molding machine provided by this utility model; Figure 4 Another structural schematic diagram of an embodiment of the hydraulic oil tank of the injection molding machine provided by this utility model; Figure 5 This is another structural schematic diagram of an embodiment of the hydraulic oil tank of the injection molding machine provided by this utility model.
[0018] Explanation of icon numbers: label name label name 100 Hydraulic oil tank shell 210 oil return pipe 110 fuel tank top plate 211 Main return pipe 111 fuel tank opening 212 Filter return pipe 120 Fuel tank bottom plate 213 Waste oil return pipe of the shooting platform 130 Front folding vertical board 214 Hydraulic motor return pipe 140 Rear Folding Plate 220 oil pipe 141 First return oil pipe hole 221 Strengthening ring 142 Second return oil pipe hole 222 Connecting pipe 143 Third oil pipe hole 223 Oil filter flange 144 Fourth return oil pipe hole 230 Fuel tank gasket 145 Oil sucker tube hole 240 Filter holder 146 Second Su Jie mounting hole 250 First Su Jie 200 Hydraulic oil tank 260 Second Su Jie 270 Inner partition The realization of the purpose, functional features and advantages of this utility model will be further explained in conjunction with the embodiments and with reference to the accompanying drawings. Detailed Implementation
[0019] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the scope of protection of the present utility model.
[0020] It should be noted that if the embodiments of this utility model involve directional indicators (such as up, down, left, right, front, back, etc.), the directional indicators are only used to explain the relative positional relationship and movement of the components in a specific posture. If the specific posture changes, the directional indicators will also change accordingly.
[0021] Furthermore, if the embodiments of this utility model involve descriptions such as "first" or "second," these descriptions are for descriptive purposes only and should not be construed as indicating or implying their relative importance or implicitly specifying the number of indicated technical features. Therefore, features defined with "first" or "second" may explicitly or implicitly include at least one of those features. Additionally, the technical solutions of the various embodiments can be combined with each other, but this must be based on the ability of those skilled in the art to implement them. If the combination of technical solutions is contradictory or impossible to implement, it should be considered that such a combination of technical solutions does not exist and is not within the scope of protection claimed by this utility model.
[0022] Please see Figures 1 to 2 This utility model provides a hydraulic oil tank shell 100 for an injection molding machine: In one embodiment of this utility model, the hydraulic oil tank shell 100 of the injection molding machine is mainly composed of a top plate 110, a bottom plate 120, a front folding plate 130, and a rear folding plate 140. The top plate 110 and the bottom plate 120 are arranged parallel to each other, and the front folding plate 130 and the rear folding plate 140 are respectively vertically connected between the top plate and the bottom plate. The two sides of the front folding plate 130 and the two sides of the rear folding plate 140 are fixedly connected by a robot full-weld layer to form the sidewall of the oil tank. This robot full-weld layer ensures the sealing and structural strength of the sidewall connection, effectively prevents hydraulic oil leakage, and improves the overall rigidity. The front folding plate 130 and the rear folding plate 140 are made of steel plates, which are bent and welded to ensure dimensional accuracy and load-bearing capacity. The bottom edge of the tank sidewall is fixedly connected to the tank bottom plate 120 by a robot-welded layer, and the top edge of the tank sidewall is fixedly connected to the tank top plate 110 by a robot-welded layer, forming a stable box structure as the hydraulic oil tank shell 100. The use of a robot-welded layer ensures reliable overall sealing of the box, while reducing the quality impact of manual welding, making the hydraulic oil tank shell 100 of the injection molding machine suitable for long-term operation under high-pressure conditions.
[0023] A robotic full-welding process is used to coat the joints between the top plate 110, bottom plate 120, front folding plate 130, and rear folding plate 140 of the oil tank with a robotic full-welding layer. This achieves a high-strength, high-quality connection with uniform, continuous, and leak-free welds, improving the structural stability and sealing performance of the hydraulic oil tank shell 100. It also effectively avoids defects such as uneven welds, porosity, and slag inclusions caused by operational differences in traditional manual welding, further ensuring product consistency and reliability. Combined with a high-precision bending forming process, the assembly errors of the front folding plate 130 and rear folding plate 140 are reduced, improving overall geometric accuracy and ensuring good sealing and fatigue resistance under long-term alternating loads, meeting the requirements of continuous operation of the injection molding machine.
[0024] Optionally, the tank top plate 110, the tank bottom plate 120, the front folded vertical plate 130 and the rear folded vertical plate 140 are each provided with a manual spot welding portion, which is used for preliminary positioning and fixing of each component before robotic welding, so as to ensure assembly accuracy. The manual spot welding portion is arranged on the inner side of the overlapping edge of the plates, which does not affect the continuity and sealing effect of the full welding layer. Through the process flow of spot welding first and then full welding, dislocation and deformation during the welding process are effectively prevented, the consistency and stability of the overall structure of the tank body are further improved, and the safety and reliability of the hydraulic tank shell 100 under long-term high-load operation are guaranteed. Specifically, the manual spot welding portions on both side edges of the front folded vertical plate 130 and the manual spot welding portions on both side edges of the rear folded vertical plate 140 are correspondingly spot-welded and fixed to form a first initial positioning structure; the manual spot welding portion on the bottom edge of the tank side wall and the manual spot welding portion on the upper surface of the tank bottom plate 120 are correspondingly spot-welded and fixed to form a second initial positioning structure; the manual spot welding portion on the top edge of the tank side wall and the manual spot welding portion on the lower surface of the tank top plate 110 are correspondingly spot-welded and fixed to form a third initial positioning structure. The first initial positioning structure, the second initial positioning structure and the third initial positioning structure act synergistically to ensure that the tank top plate 110, the tank bottom plate 120, the front folded vertical plate 130 and the rear folded vertical plate 140 maintain accurate relative positions during robotic full welding, thereby preventing welding deformation and improving the consistency of overall geometric tolerance. The purpose of兼顾 assembly efficiency and structural reliability is achieved, which is suitable for stable mass production of high-precision hydraulic tank shells 100.
[0025] In this embodiment, the robotic full welding layer covers the first initial positioning structure, the second initial positioning structure, the third initial positioning structure, the connecting seam between the front folded vertical plate 130 and the rear folded vertical plate 140, the connecting seam between the tank side wall and the tank top plate 110, and the connecting seam between the tank side wall and the tank bottom plate 120. By covering each connecting part with the robotic full welding layer, it is ensured that all connecting interfaces form dense and uniform weld seams, realizing full weld coverage without dead angles, so as to eliminate potential leakage paths and further strengthen the structural integrity. Through the robotic full welding process, heat input can be accurately controlled, welding residual stress can be reduced, deformation risk can be lowered, and the dimensional stability and sealing durability of the hydraulic tank shell 100 under frequent pressure fluctuations can be guaranteed.
[0026] Further, weld flaw detection technology can be used in cooperation to ensure that every welding area is free from defects such as cracks and incomplete fusion, so as to improve the overall pressure bearing capacity. It should be noted that after forming the robotic welding layer, kerosene detection is performed on the hydraulic tank shell 100 to verify the compactness and sealing performance of the weld seam and ensure no leakage. Specifically, the kerosene detection lasts for 30 minutes, during which a chalk powder layer is coated on the outer surface of the robotic full welding layer. If no oil stain penetration is found, the sealing is determined to be qualified.
[0027] In one feasible embodiment, a first return oil pipe hole 141 and a second return oil pipe hole 142 are provided on one folded surface of the rear folding plate 140; a third return oil pipe hole 143, a fourth return oil pipe hole 144, and a suction oil pipe hole 145 are provided on the other folded surface of the rear folding plate 140. Specifically, the first return oil pipe hole 141 is used to support the main return oil pipe 211 in the hydraulic system, the second return oil pipe hole 142 is used to support the filter return oil pipe 212, the third return oil pipe hole 143 is used to support the waste oil return oil pipe 213 of the injection station, the fourth return oil pipe hole 144 is used to support the hydraulic motor return oil pipe 214, and the suction oil pipe hole 145 is used to support the suction oil pipe 220, ensuring that the installation positions of each pipeline are accurate and do not interfere with each other. Each return oil pipe hole and suction oil pipe hole 145 is precisely positioned by a drilling jig and then machined, and the edges of the holes are chamfered and deburred to avoid damage to the sealing ring or pipe wall during assembly. The top plate 110 of the oil tank is provided with an oil tank opening 111. Subsequent oil filling and replacement of the hydraulic oil in the injection molding machine's hydraulic oil tank 200 are all performed through the tank opening 111.
[0028] For example, the top plate 110, bottom plate 120, front folding plate 130, and rear folding plate 140 of the fuel tank are all made of steel plates, each with a thickness of 4 mm. The top plate 110 has dimensions of 774 mm in length and 514 mm in width; the fuel tank opening 111 has dimensions of 279 mm in length and 229 mm in width, and is located in the central area of the top plate 110. The bottom plate 120 has dimensions of 774 mm in length and 514 mm in width. The rear folding plate 140 has a height of 542 mm; its longitudinal folding surface length is 735 mm, and it has a third oil return hole, a fourth oil return hole, and an oil extraction hole. The third oil return pipe hole 143 and the fourth oil return pipe hole 144 are distributed in the longitudinal direction with a spacing of 100 mm. Its width folding surface length is 494 mm, and it has a first oil return pipe hole 141, a second oil return pipe hole 142, and a second Sujie mounting hole 146. The second oil return pipe hole 142 and the second Sujie mounting hole 146 are distributed in the vertical direction with a spacing of 87 mm. The front folding plate 130 has a height of 542 mm, a longitudinal folding surface length of 735 mm, and a width folding surface length of 494 mm.
[0029] Please see Figures 3 to 5This utility model also proposes a hydraulic oil tank 200 for an injection molding machine. The hydraulic oil tank 200 includes a return oil pipe 210, an extraction oil pipe 220, and the aforementioned hydraulic oil tank shell 100. The specific structure of the hydraulic oil tank shell 100 is as described in the above embodiments. Since this hydraulic oil tank 200 adopts all the technical solutions of all the above embodiments, it possesses at least all the beneficial effects brought about by the technical solutions of the above embodiments, which will not be elaborated further here. The return oil pipe 210 and the extraction oil pipe 220 are housed in the oil tank cavity of the hydraulic oil tank shell 100. One end of the return oil pipe 210 and the extraction oil pipe 220 penetrates the side wall of the oil tank, extending from the oil tank cavity to the outside of the hydraulic oil tank shell 100, for connecting to external hydraulic system pipelines to realize the circulation and extraction of hydraulic oil. The penetration portion of the return oil pipe 210 and the extraction oil pipe 220 is sealed with a circumferential full weld to ensure no leakage risk at the interface. After the return oil pipe 210 and the extraction oil pipe 220 are welded, a local pressure test is performed on the through area to ensure the sealing reliability of the hydraulic oil tank 200 of the injection molding machine.
[0030] The hydraulic oil tank 200 of the injection molding machine includes a main return oil pipe 211, a filter return oil pipe 212, an injection stage waste oil return oil pipe 213, and a hydraulic motor return oil pipe 214. The main return oil pipe 211 passes through the first return oil pipe hole 141 of the rear folding plate 140 of the hydraulic oil tank shell 100; the filter return oil pipe 212 passes through the second return oil pipe hole 142 of the rear folding plate 140; the injection stage waste oil return oil pipe 213 passes through the third return oil pipe hole 143 of the rear folding plate 140; and the hydraulic motor return oil pipe 214 passes through the fourth return oil pipe hole 144 of the rear folding plate 140.
[0031] The main return oil pipe 211 is directly connected to the motor, and most of the hydraulic oil flows back to the hydraulic oil tank 200 through the main return oil pipe 211, ensuring the cleanliness and circulation efficiency of the oil during system operation. The filter return oil pipe 212 is connected to the filter in the hydraulic circuit. The hydraulic oil filtered by the filter flows back to the hydraulic oil tank 200 through the filter return oil pipe 212, realizing continuous purification and recycling of the oil and reducing the risk of wear on system components caused by impurities. The injection stage waste oil return oil pipe 213 is used to collect waste oil generated in the injection stage area of the injection molding machine and guide it to the hydraulic oil tank 200 for centralized treatment, avoiding waste oil leakage that could cause environmental pollution or equipment corrosion. The hydraulic motor return oil pipe 214 is used to receive the return oil after the hydraulic motor has worked. This ensures that the return oil of each branch of the system is independent and orderly, without interference between them.
[0032] The hydraulic oil tank 200 of the injection molding machine also includes a reinforcing ring 221, a connecting pipe 222, and an oil filter flange 223; the oil suction pipe 220 passes through the oil suction pipe hole 145 of the rear folding plate 140; the connecting pipe 222 passes through the oil suction pipe hole 145 and is sleeved on the outside of the oil suction pipe 220, and one end of the connecting pipe 222 located outside the hydraulic oil tank shell 100 is connected to the oil filter flange 223; the reinforcing ring 221 is sleeved on the outside of the end of the connecting pipe 222 that extends out of the rear folding plate 140, and is fixedly connected to the rear folding plate 140.
[0033] The hydraulic system's oil pump draws hydraulic oil from the hydraulic oil tank 200 via the oil extraction pipe 220. The oil extraction pipe 220 and the connecting pipe 222 form a concentric double-layer structure, enhancing the structural stability and vibration resistance of the oil extraction pipe 220 during the oil extraction process and preventing loosening of connections or seal failure due to vibration. The filter flange 223 connects to the motor oil pump flange, achieving docking and reliable sealing between the power unit and the hydraulic circuit, ensuring no oil leakage during motor operation. Because the portions of the oil extraction pipe 220 and the connecting pipe 222 protrude beyond the hydraulic oil tank shell 100, along with the filter flange 223, generate a significant bending moment. To prevent deformation of the rear folding plate 140, a reinforcing ring 221 is welded to the rear folding plate 140, increasing the mechanical strength of the connection and enhancing the rear folding plate 140's ability to withstand bending moments.
[0034] The hydraulic oil tank 200 of the injection molding machine also includes an oil tank pad 230 for fixing the oil tank sealing cover and a filter seat 240 for fixing the filter. The oil tank pad 230 is fixed to the side of the oil tank top plate 110 away from the oil tank cavity and is located at the oil tank opening 111 of the oil tank top plate 110. The filter seat 240 is fixed to the outer side of the folded vertical surface of the rear folded vertical plate 140 where the second return oil pipe hole 142 is opened. The oil tank pad 230 is used to support and position the oil tank sealing cover, ensuring the sealing reliability between the oil tank sealing cover and the oil tank opening 111, preventing hydraulic oil leakage and external contaminants from entering the oil tank cavity. The side of the oil tank pad 230 away from the oil tank top plate 110 has a threaded hole for fastening the oil tank sealing cover with bolts. The filter seat 240 is used to securely install the filter in the hydraulic system, forming a stable oil circuit connection with the filter return oil pipe 212, ensuring that the filtered hydraulic oil flows smoothly back to the oil tank. Understandably, the filter housing is bolted to the rear folding plate 140. This ensures that the filter does not shift or vibrate and fall off during operation, improving the overall reliability and safety of the system.
[0035] The hydraulic oil tank 200 of the injection molding machine also includes a first switch 250 connected to an oil temperature sensor and a second switch 260 connected to an oil tank filter. The first switch 250 is fixedly connected to the end of the filter return pipe 212 furthest from the oil tank cavity, used to monitor the oil temperature inside the hydraulic oil tank 200 in real time, preventing oil deterioration or system performance degradation due to excessively high oil temperature. The second switch 260 is fixed to the outer side of the folded surface of the rear folding plate 140 where the second return pipe hole 142 is located, used to connect the oil tank filter, ensuring a reliable seal and stable connection between the filter and the return pipe, preventing hydraulic oil leakage and the intrusion of external contaminants. By fixing the second switch 260 to the outer side of the folded surface of the rear folding plate 140, the stress at the filter installation location can be effectively distributed, improving structural strength and seismic resistance.
[0036] Furthermore, the oil tank cavity also contains an inner baffle 270, which is used to reduce the impact of the hydraulic oil flow disturbance during oil extraction and return on the oil tank, and to prevent the turbulence generated during the oil return process from affecting the stability of the oil.
[0037] The above description is merely an exemplary embodiment of the present utility model and does not limit the patent scope of the present utility model. Any equivalent structural transformations made based on the technical concept of the present utility model and the contents of the present utility model specification and drawings, or direct / indirect applications in other related technical fields, are included within the patent protection scope of the present utility model.
Claims
1. A hydraulic oil tank housing for an injection molding machine, characterized in that, include: Fuel tank top plate (110), fuel tank bottom plate (120), front folding upright plate (130) and rear folding upright plate (140); The two sides of the front folding plate (130) are fixedly connected to the two sides of the rear folding plate (140) by a robot full-welding layer to form the side wall of the oil tank. The bottom edge of the side wall of the oil tank is fixedly connected to the bottom plate (120) of the oil tank by a robot full weld layer, and the top edge of the side wall of the oil tank is fixedly connected to the top plate (110) of the oil tank by a robot full weld layer, forming a hydraulic oil tank shell (100). The interior of the hydraulic oil tank housing (100) forms an oil tank cavity that accommodates the return oil pipe (210) and the extraction oil pipe (220).
2. The hydraulic oil tank housing of the injection molding machine as described in claim 1, characterized in that, The top plate (110), bottom plate (120), front folding plate (130), and rear folding plate (140) of the fuel tank are all equipped with manual spot welding parts; The manual spot welding parts on both sides of the front folding plate (130) are spot welded to the manual spot welding parts on both sides of the rear folding plate (140) to form a first initial positioning structure. The manual spot welding part on the bottom edge of the side wall of the oil tank is spot welded to the manual spot welding part on the upper surface of the bottom plate (120) of the oil tank, forming a second initial positioning structure; The manual spot welded part on the top edge of the side wall of the oil tank is spot welded to the manual spot welded part on the lower surface of the top plate (110) of the oil tank, forming a third initial positioning structure.
3. The hydraulic oil tank housing of the injection molding machine as described in claim 2, characterized in that, The robot's full-welded layer covers the first initial positioning structure, the second initial positioning structure, the third initial positioning structure, the connecting seam between the front folding plate (130) and the rear folding plate (140), the connecting seam between the tank sidewall and the tank top plate (110), and the connecting seam between the tank sidewall and the tank bottom plate (120).
4. The hydraulic oil tank housing of the injection molding machine as described in claim 1, characterized in that, The rear folding plate (140) has a first return oil pipe hole (141) and a second return oil pipe hole (142) on one folding surface; the rear folding plate (140) has a third return oil pipe hole (143), a fourth return oil pipe hole (144) and an oil extraction pipe hole (145) on the other folding surface.
5. The hydraulic oil tank housing of the injection molding machine as described in claim 1, characterized in that, The top plate (110) of the fuel tank is provided with a fuel tank opening (111).
6. A hydraulic oil tank for an injection molding machine, characterized in that, include: The return oil pipe (210), the extraction oil pipe (220), and the hydraulic oil tank housing (100) of the injection molding machine according to any one of claims 1 to 5. The return oil pipe (210) and the sucker oil pipe (220) are housed in the tank cavity of the hydraulic oil tank housing (100). One end of the return oil pipe (210) and the sucker oil pipe (220) penetrates the side wall of the oil tank and extends from the tank cavity to the outside of the hydraulic oil tank housing (100).
7. The hydraulic oil tank of the injection molding machine as described in claim 6, characterized in that, The hydraulic oil tank (200) of the injection molding machine includes a main return oil pipe (211), a filter return oil pipe (212), an injection stage waste oil return oil pipe (213), and a hydraulic motor return oil pipe (214). The main return oil pipe (211) passes through the first return oil pipe hole (141) of the rear folding plate (140) of the hydraulic oil tank shell (100); the filter return oil pipe (212) passes through the second return oil pipe hole (142) of the rear folding plate (140); the waste oil return oil pipe (213) of the injection station passes through the third return oil pipe hole (143) of the rear folding plate (140); and the hydraulic motor return oil pipe (214) passes through the fourth return oil pipe hole (144) of the rear folding plate (140).
8. The hydraulic oil tank of the injection molding machine as described in claim 6, characterized in that, The hydraulic oil tank (200) of the injection molding machine also includes a reinforcing ring (221), a connecting pipe (222), and an oil filter flange (223). The oil extraction tube (220) passes through the oil extraction tube hole (145) of the rear folding plate (140). The connecting pipe (222) passes through the oil extraction pipe hole (145) and is sleeved on the outside of the oil extraction pipe (220). One end of the connecting pipe (222) located outside the hydraulic oil tank shell (100) is connected to the oil filter flange (223). The reinforcing ring (221) is sleeved on the outside of the end of the connecting pipe (222) that extends out of the rear folding plate (140) and is fixedly connected to the rear folding plate (140).
9. The hydraulic oil tank of the injection molding machine as described in claim 6, characterized in that, The hydraulic oil tank (200) of the injection molding machine also includes an oil tank pad (230) for fixing the oil tank sealing cover and a filter seat (240) for fixing the filter. The tank pad (230) is fixed to the side of the tank top plate (110) away from the tank cavity, and is located at the tank opening (111) of the tank top plate (110); The filter seat (240) is fixed to the outside of the folded surface of the rear folded plate (140) where the second return oil pipe hole (142) is opened.
10. The hydraulic oil tank of the injection molding machine as described in claim 7, characterized in that, The hydraulic oil tank (200) of the injection molding machine also includes a first switch (250) connected to an oil temperature sensor and a second switch (260) connected to an oil tank filter. The first Sujie (250) is fixedly connected to the end of the filter return oil pipe (212) away from the oil tank cavity; the second Sujie (260) is fixed to the outside of the folded surface of the rear folding plate (140) where the second return oil pipe hole (142) is opened.