A mold for producing a train squat toilet

Abstract

The utility model discloses a train squatting closet production mould in the technical field of squatting closet mould, including mounting seat, the hydraulic cylinder is fixedly installed on the mounting seat, be provided with the workstation on the mounting seat, be provided with the upper pressure mould on the output of hydraulic cylinder, the lower mould is slidably connected on the workstation, be provided with the cavity between the workstation and lower mould, be provided with buffer assembly in the workstation, buffer assembly includes pressure pipe and spring. The utility model discloses a pressure pipe and spring are combined buffering, wherein, the hydraulic cavity in pressure pipe forms multistage damping through spiral vortex hole and flow guide groove, and the air cavity utilizes the compressibility of air to absorb residual vibration, and the guiding structure of workstation is cooperated, reduces the vibration and impact in the stamping process, protects the mould structure from the resilience damage, ensures product size accuracy, prolongs the service life of mould simultaneously.

Description

Technical Field

[0001] This utility model relates to the field of squat toilet mold technology, and in particular to a mold for producing squat toilets for trains. Background Technology

[0002] In the design of sanitary facilities for railway passenger transport equipment, traditional ceramic squat toilets are prone to cracking during high-speed train operation due to their brittleness and weight. Furthermore, maintenance and replacement require interruption of power and water supply to the carriage, resulting in low efficiency. Therefore, stamped stainless steel squat toilets have become the mainstream choice due to their excellent durability and hygienic performance. These sanitary wares made of stainless steel need to be manufactured through precision stamping to meet the stringent mechanical performance and space constraints required during train operation.

[0003] However, existing technologies have some problems: due to the high yield strength and elastic modulus of stainless steel, a large amount of elastic strain energy will be stored during stamping deformation. When the mold pressure is released, this energy will be released suddenly, generating a large amount of rebound impact force. Moreover, this rebound impact is instantaneous, causing the mold to bear a huge dynamic load, resulting in mold damage. It will also cause strong vibrations and cause product size deviations. Therefore, we propose a mold for the production of squat toilets for trains. Utility Model Content

[0004] To address the shortcomings of existing technologies, this utility model provides a mold for producing squat toilets for trains. By setting a composite buffer structure, it alleviates the impact of stainless steel stamping springback, reduces the dynamic load and vibration of the mold, and ensures demolding stability and product dimensional accuracy.

[0005] The purpose of this utility model is achieved as follows: A mold for producing a squat toilet for trains includes a mounting base, on which a hydraulic cylinder is fixedly mounted. A worktable is provided on the mounting base, and an upper pressure mold is provided on the output end of the hydraulic cylinder. A lower mold is slidably connected to the worktable, and a cavity is provided between the worktable and the lower mold. A buffer assembly is provided inside the worktable, and the buffer assembly includes a pressure tube and a spring. Buffer pads are provided at both ends of the pressure tube on its outer side.

[0006] Optionally, the upper die has a cavity, and a pressure block is provided on the outside of the cavity, the pressure block being in contact with the worktable.

[0007] Optionally, one end of the pressure tube is fixedly connected to the lower mold, the other end of the pressure tube is fixedly connected to the worktable, the spring is sleeved on the outside of the pressure tube, and the spring is correspondingly arranged with the pressure tube.

[0008] Optionally, the pressure tube includes an upper pressure tube and a lower pressure tube, the upper pressure tube and the lower pressure tube are slidably connected, and heat dissipation fins are provided on the outer side of the lower pressure tube.

[0009] Optionally, a connecting rod is fixedly connected inside the upper pressure tube, an end cap is fitted on the connecting rod, the end cap is fixedly connected to the lower pressure tube, a pressure plug is provided on the connecting rod, and a floating piston is slidably connected inside the lower pressure tube. The upper end of the floating piston and the lower pressure tube form a hydraulic cavity, and the lower end of the floating piston and the lower pressure tube form an air cavity.

[0010] Optionally, the inner wall of the pressure tube is provided with a flow guide groove, the outer side of the pressure plug is provided with a plurality of holes, the pressure plug is provided with vortex holes, the vortex holes are spirally arranged, the number of vortex holes is multiple, and the multiple vortex holes are circumferentially distributed.

[0011] Compared with the prior art, the beneficial effects of this utility model are as follows:

[0012] 1. By combining pressure tubes and springs for buffering, the hydraulic chamber inside the pressure tube forms multi-stage damping through spiral vortex holes and guide grooves, while the air chamber absorbs residual vibrations using the compressibility of air. Combined with the guiding structure of the worktable, this reduces vibration and impact during the stamping process, protecting the mold structure from damage caused by springback force, ensuring product dimensional accuracy, and extending the mold's service life.

[0013] 2. The heat dissipation fins on the outside of the pressure tube increase the heat dissipation area, improve the heat dissipation efficiency of the pressure tube, control the overall operating temperature of the pressure tube, prevent heat accumulation in the pressure tube during continuous operation, and thus extend the service life of the device. At the same time, the modular structure improves the convenience of device maintenance and reduces downtime for maintenance. Attached Figure Description

[0014] 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 embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on the provided drawings without creative effort.

[0015] Figure 1 This is a schematic diagram of the overall structure provided by this utility model.

[0016] Figure 2 This is a schematic diagram of the upper pressure mold structure provided by this utility model.

[0017] Figure 3 This is a schematic diagram of the lower mold structure provided by this utility model.

[0018] Figure 4 This is a cross-sectional schematic diagram of the workbench provided by this utility model.

[0019] Figure 5 This is a cross-sectional schematic diagram of the pressure tube structure provided by this utility model.

[0020] In the diagram: 1. Mounting base; 11. Hydraulic cylinder; 12. Workbench; 2. Upper mold; 21. Mold cavity; 22. Pressing block; 3. Lower mold; 4. Buffer assembly; 41. Pressure pipe; 4101. Buffer pad; 42. Spring; 43. Upper pressure pipe; 44. Lower pressure pipe; 4401. Guide channel; 45. Connecting rod; 46. End cap; 47. Pressure plug; 4701. Vortex hole; 48. Floating piston; 4801. Hydraulic cavity; 4802. Air cavity. Detailed Implementation

[0021] 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 protection scope of the present utility model.

[0022] like Figures 1 to 5 The mold shown is for producing a squat toilet for trains. It includes a mounting base 1, on which a hydraulic cylinder 11 is fixedly mounted. A workbench 12 is provided on the mounting base 1. An upper pressure mold 2 is provided on the output end of the hydraulic cylinder 11. A lower mold 3 is slidably connected to the workbench 12. A cavity is provided between the workbench 12 and the lower mold 3. A buffer assembly 4 is provided inside the workbench 12. The buffer assembly 4 includes a pressure pipe 41 and a spring 42. One end of the pressure pipe 41 is fixedly connected to the lower mold 3, and the other end of the pressure pipe 41 is fixedly connected to the workbench 12. The spring 42 is sleeved on the outside of the pressure pipe 41. The spring 42 is correspondingly arranged with the pressure pipe 41. Buffer pads 4101 are provided at both ends of the pressure pipe 41.

[0023] It should be noted that the worktable 12 is provided with a slide groove, the lower mold 3 slides in the slide groove, and the four corners of the slide groove are provided with cylindrical cavities, which correspond to the four corners of the lower mold 3. In addition, the slide groove is provided with a claw platform to support the lower mold 3 and restrict the lower mold 3 from moving further downward.

[0024] Furthermore, firstly, the pressure tube 41 and the spring 42 work together to absorb the elastic strain energy released by the stainless steel material during the stamping process, reducing the damage to the mold caused by the springback impact.

[0025] Secondly, the buffer pads 4101 at both ends of the pressure tube 41 can reduce the direct pressure on both ends of the pressure tube 41, further disperse the impact force, and avoid local stress concentration.

[0026] In addition, the worktable 12 and the lower die 3 form a sliding fit, and the cylindrical cavity provides precise guidance for the lower die 3, ensuring the alignment of the upper and lower dies 3 during the stamping process and reducing die wear and product size deviation caused by off-center loading.

[0027] Specifically, the upper die 2 has a mold cavity 21, and a pressure block 22 is provided on the outside of the mold cavity 21, which is in contact with the worktable 12.

[0028] Furthermore, the pressure block 22 is located outside the mold cavity 21, and its bottom distance is slightly lower than that of the mold cavity 21. It is used to limit the downward pressure position of the upper pressure die 2, control the downward pressure stroke of the upper pressure die 2, avoid damage to the mold due to excessive pressure caused by excessive pressing, and extend the service life of the mold.

[0029] The structure of the bottom of the pressure block 22 being slightly lower than that of the mold cavity 21 ensures that the material is not subjected to additional compression while being fully formed, thus guaranteeing the forming quality of the stainless steel squat toilet and preventing the risk of mold deformation or cracking caused by excessive pressure.

[0030] Specifically, the pressure tube 41 includes an upper pressure tube 43 and a lower pressure tube 44. The upper pressure tube 43 and the lower pressure tube 44 are slidably connected, and heat dissipation fins are provided on the outer side of the lower pressure tube 44.

[0031] Furthermore, the heat dissipation fins are used to improve the heat dissipation efficiency of the pressure tube 41 and ensure the stability of the damping system during continuous high-intensity operation. By increasing the heat dissipation surface area, the heat dissipation fins can dissipate the heat generated inside the pressure tube 41 due to frequent compression, preventing the viscosity of the hydraulic oil from decreasing due to temperature rise, thereby maintaining the stability of the damping force and the accuracy of the response.

[0032] Specifically, a connecting rod 45 is fixedly connected inside the upper pressure pipe 43, and an end cap 46 is fitted on the connecting rod 45. The end cap 46 is fixedly connected to the lower pressure pipe 44. A pressure plug 47 is provided on the connecting rod 45. A floating piston 48 is slidably connected inside the lower pressure pipe 44. The upper end of the floating piston 48 and the lower pressure pipe 44 form a hydraulic chamber 4801, and the lower end of the floating piston 48 and the lower pressure pipe 44 form an air chamber 4802.

[0033] Furthermore, when the upper die 2 is pressed down, the connecting rod 45 drives the pressure plug 47 to compress the oil in the hydraulic chamber 4801. The oil generates buffer resistance through the damping hole of the pressure plug 47. At the same time, the floating piston 48 moves synchronously, using the elastic deformation of air to absorb high-frequency vibration and compressibility to absorb the remaining impact energy, thus solving the problem of instantaneous impact caused by the springback of stainless steel stamping.

[0034] Specifically, the inner wall of the pressure pipe 44 is provided with a flow guide groove 4401, the outer side of the pressure plug 47 is provided with several holes, and the pressure plug 47 is provided with a vortex hole 4701. The vortex hole 4701 is spirally arranged, and there are multiple vortex holes 4701, which are distributed in a circular pattern.

[0035] Furthermore, the guide groove 4401 guides the oil to form an orderly flow, avoiding pressure fluctuations caused by turbulence. The spiral vortex hole 4701 on the pressure plug 47 increases the flow resistance by extending the oil path, making the hydraulic damping more uniform and stable.

[0036] Among them, the porous structure on the outside of the pressure plug 47 can release oil pressure in stages, realize the gradual absorption of impact force, and make the hydraulic oil generate a multi-level damping effect during compression. This can effectively suppress the instantaneous rebound impact during stainless steel stamping, eliminate high-frequency vibration, and ensure that the mold demolding process is stable and controllable.

[0037] Working principle: When the hydraulic cylinder 11 drives the upper die 2 to press down, the upper die 2 presses the material and the lower die 3 to form the material. At the same time, the upper die 2 presses the lower die 3 to slide down into the worktable 12 until the lower die 3 moves down to the claw platform and stops sliding. The mold cavity 21 completes the forming of the stainless steel plate. At this time, the outer pressure block 22 contacts the worktable 12 to achieve the limit.

[0038] The upper die 2 moves upward, and the resulting elastic rebound force is transmitted to the buffer assembly 4 through the lower die 3. The hydraulic chamber 4801 forms multi-stage damping through the pressure plug 47 with guide groove 4401 and spiral vortex hole 4701, converting the impact energy into the heat energy of hydraulic oil. The air chamber 4802 further absorbs residual vibration through the compression of the floating piston 48. The slide groove and cylindrical cavity of the worktable 12 provide stable guidance for the lower die 3, ensuring the stamping centering.

[0039] The above description of the embodiments is only for the purpose of helping to understand the method and core idea of ​​this utility model. It should be noted that for those skilled in the art, several improvements and modifications can be made to this utility model without departing from the principle of this utility model, and these improvements and modifications also fall within the protection scope of the claims of this utility model.

Claims

1. A mold for producing a squat toilet for trains, comprising a mounting base (1), characterized in that: A hydraulic cylinder (11) is fixedly installed on the mounting base (1). A workbench (12) is provided on the mounting base (1). An upper pressure mold (2) is provided on the output end of the hydraulic cylinder (11). A lower mold (3) is slidably connected on the workbench (12). A cavity is provided between the workbench (12) and the lower mold (3). A buffer assembly (4) is provided inside the workbench (12). The buffer assembly (4) includes a pressure tube (41) and a spring (42). Buffer pads (4101) are provided at both ends of the pressure tube (41) on the outside of the pressure tube (41).

2. The mold for producing a squat toilet for trains according to claim 1, characterized in that: The upper mold (2) has a mold cavity (21), and a pressure block (22) is provided on the outside of the mold cavity (21). The pressure block (22) is in contact with the worktable (12).

3. The mold for producing a squat toilet for trains according to claim 1, characterized in that: One end of the pressure tube (41) is fixedly connected to the lower mold (3), and the other end of the pressure tube (41) is fixedly connected to the worktable (12). The spring (42) is sleeved on the outside of the pressure tube (41), and the spring (42) is correspondingly arranged with the pressure tube (41).

4. The mold for producing a squat toilet for trains according to claim 1, characterized in that: The pressure tube (41) includes an upper pressure tube (43) and a lower pressure tube (44). The upper pressure tube (43) and the lower pressure tube (44) are slidably connected. The lower pressure tube (44) is provided with heat dissipation fins on its outer side.

5. A mold for producing a squat toilet for trains according to claim 4, characterized in that: A connecting rod (45) is fixedly connected inside the upper pressure tube (43). An end cap (46) is fitted on the connecting rod (45). The end cap (46) is fixedly connected to the lower pressure tube (44). A pressure plug (47) is provided on the connecting rod (45). A floating piston (48) is slidably connected inside the lower pressure tube (44). The upper end of the floating piston (48) and the lower pressure tube (44) form a hydraulic cavity (4801). The lower end of the floating piston (48) and the lower pressure tube (44) form an air cavity (4802).

6. A mold for producing a squat toilet for trains according to claim 5, characterized in that: The inner wall of the pressure pipe (44) is provided with a flow guide groove (4401), and the outer side of the pressure plug (47) is provided with several holes. The pressure plug (47) is provided with vortex holes (4701). The vortex holes (4701) are arranged in a spiral. There are multiple vortex holes (4701), and the multiple vortex holes (4701) are distributed in a circular pattern.

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