Internal high-pressure soft sealing push head structure
By adding soft sealing parts between the slider of the internal high -voltage product and the pushing head, the problem of the sealing effect of the internal high -pressure products in the existing technology rely on the profits of over -profit, and achieve a more stable and efficient sealing effect. The wear of the mold and reduced the thrust of the side cylinder.
Patent Information
- Application Number
- CN202421209603.8
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-05-30
- Publication Date
- 2025-01-28
- Estimated Expiration
- 2034-05-30
AI Technical Summary
When sealing high-pressure products at high pressure, the interference volume needs to be continuously increased to ensure the sealing effect, resulting in a reduction in service life of the mold and pusher, and the pusher resistance increases, which increases the thrust requirement of the opposite pusher cylinder.
Design an internal high -pressure soft sealing push head structure. By adding a soft seal part between the slider and the push head, as the internal pressure increases, the soft seal deformation increases, so Enhance the sealing effect.
The structure is stable and reliable, high use efficiency, reduced the friction of the pushing head position, reduced the thrust of the side cylinder by 30%, reduced the wear of the mold, and extended the service life of the pushing head and mold.
Smart Images
Figure CN222415975U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the technical field of sealing of high-pressure push heads, in particular to an internal high-pressure soft-sealing push head structure. Background Art
[0002] In the production of existing internal high-pressure products, the high-pressure seal adopts an interference fit mode between the product end and the push head. To ensure the sealing effect, as the internal pressure increases, the interference amount needs to be continuously increased, causing interference friction between the product end and the mold during the filling process, thereby reducing the service life of the mold and the push head; the mold at the push head position is subjected to greater force and is prone to wear and damage; at the same time, the large interference fit push head resistance increases, increasing the thrust requirements for the side push cylinder. Based on this, an internal high-pressure soft seal push head structure is designed. By adding a soft seal part, as the internal pressure continues to increase, the soft seal deformation increases, so that the push head achieves a small interference in the high-pressure section, enhancing the sealing effect. The structure is stable and reliable, with high efficiency and good effect. While reducing the friction at the push head position, it can also reduce 30% of the side push cylinder thrust, while reducing mold wear, achieving an improved effect. Utility Model Content
[0003] The purpose of the utility model is to overcome the deficiencies of the prior art and provide an internal high-pressure soft-sealed push head structure. A soft sealing part is added between the slider and the push head. As the internal pressure of the product continues to increase, the soft seal deformation increases under the action of the slider, so that the push head achieves a small interference in the high-pressure section, thereby enhancing the sealing effect. The structure is stable and reliable, has high efficiency and good effect. While reducing the friction force at the push head position, it can also reduce 30% of the thrust of the side push cylinder, while reducing mold wear, thereby achieving an improved effect.
[0004] The purpose of the utility model is achieved through the following technical solutions: an internal high-pressure soft-sealed push head structure, the structure includes a push rod, a push head, a fixed rod and a slider, the slider, the push head and the push rod are sequentially sleeved on the fixed rod, a soft seal is provided between the slider and the push head, and the outer diameter of the rod head of the fixed rod is larger than the inner diameter of the slider. The internal high-pressure soft-sealed push head structure is placed inside the product mold. When in use, as the pressure inside the product mold increases, the internal pressure pushes the slider to squeeze the soft seal, causing it to expand and become larger to form an interference seal with the inner wall of the product mold. At the same time, the inner wall of the soft seal becomes smaller due to expansion and forms an interference seal with the fixed rod, thereby achieving a water-sealing effect. The sealing of all high-pressure sections is completed by soft seals, thereby reducing the interference fit of the pusher head, reducing the friction at the pusher head position, and correspondingly reducing the wear between the pusher head and the product mold, thereby increasing the service life of the mold; since the interference fit of the pusher head is reduced, the force is also reduced, thereby extending the service life of the pusher head. At the same time, the friction at the pusher head position is reduced, so that the thrust of the side push cylinder that pushes the internal high-pressure soft seal pusher head structure is also reduced accordingly, thereby increasing the side push cylinder's material replenishment capacity and achieving the purpose of water sealing.
[0005] The fixing rod comprises a rod head, a middle rod and a tail rod, the outer diameters of the rod head, the middle rod and the tail rod decrease in sequence, and a first penetrating channel is arranged at the central axis of the fixing rod.
[0006] The sliding block, the soft seal and the pushing head are sleeved on the middle rod in sequence.
[0007] Furthermore, the push rod is partially sleeved on the tail rod, and a second channel penetrating therethrough is provided at the central axis of the push rod.
[0008] The first channel and the second channel are high-pressure liquid channels, the central axis of the first channel is aligned with the central axis of the second channel, and a gap is left between the first channel and the second channel.
[0009] The shape of the push head matches that of the push rod, the push rod is used to fix the push head, and the push head is connected to the high-pressure pipe.
[0010] The beneficial effects of the utility model are:
[0011] 1. The utility model adds a soft sealing part between the slider and the push head. As the pressure inside the product increases, the soft seal is deformed more under the action of the slider, so that the push head reaches a small interference in the high-pressure section, thereby enhancing the sealing effect.
[0012] 2. The utility model has a stable and reliable structure, high efficiency and good effect. While reducing the friction force at the push head position, it can also reduce the thrust of the side push cylinder by 30%, while reducing mold wear, achieving an improvement effect. BRIEF DESCRIPTION OF THE DRAWINGS
[0013] Figure 1 The structure of the utility model is shown in FIG. Figure 1 ;
[0014] Figure 2 The structure of the utility model is shown in FIG. Figure 2 ;
[0015] Figure 3 is a structural schematic diagram of a fixed rod;
[0016] In the figure: 1-push rod, 2-push head, 3-fixed rod, 4-slider, 5-soft seal, 31-rod head, 32-middle rod, 33-tail rod, 34-first channel, 35-second channel. DETAILED DESCRIPTION
[0017] In order to make the purpose, technical scheme and advantages of the embodiment of the utility model clearer, the technical scheme in the embodiment of the utility model will be clearly and completely described below in conjunction with the drawings in the embodiment of the utility model. Obviously, the described embodiment is a part of the embodiment of the utility model, rather than all the embodiments. The components of the embodiment of the utility model generally described and shown in the drawings here can be arranged and designed in various different configurations. Therefore, the following detailed description of the embodiment of the utility model provided in the drawings is not intended to limit the scope of the utility model for protection, but merely represents the selected embodiment of the utility model. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without making creative work belong to the scope of protection of the utility model.
[0018] The utility model is further described below in conjunction with the accompanying drawings and specific embodiments.
[0019] Embodiment 1:
[0020] like Figures 1 to 3 As shown, an internal high-pressure soft-sealed pusher head structure is placed inside the product mold. The side push cylinder pushes the internal high-pressure soft-sealed pusher head structure, which pushes the tube to be processed to move inside the product mold. The internal high-pressure soft-sealed pusher head structure includes a push rod 1, a pusher head 2, a fixed rod 3 and a slider 4. The slider 4, the pusher head 2 and the pusher head 1 are sequentially sleeved on the fixed rod 3. A soft seal 5 is arranged between the slider 4 and the pusher head 2. The outer diameter of the rod head 31 of the fixed rod 3 is larger than the inner diameter of the slider 4. When in use, as the pressure inside the product mold increases, the internal pressure pushes the slider 4 to squeeze the soft seal 5, causing it to expand and become larger to form an interference seal with the inner wall of the product mold. At the same time, the inner wall of the soft seal 5 becomes smaller due to expansion and forms an interference seal with the fixed rod 3, thereby achieving a water-sealing effect. The sealing of all high-pressure sections is completed by soft seal 5, thereby reducing the interference fit of push head 2, reducing the friction force at the position of push head 2, and correspondingly reducing the wear between push head 2 and product mold, thereby increasing the service life of the mold; since the interference fit of push head 2 is reduced, the force is also reduced, thereby extending the service life of push head 2, and at the same time, the friction force at the position of push head 2 is reduced, so that the thrust of the side push cylinder is also reduced accordingly, thereby increasing the feeding capacity of the side push cylinder and achieving the purpose of water sealing.
[0021] Embodiment 2:
[0022] On the basis of Example 1, this embodiment makes an improvement on the fixed rod 3. The fixed rod 3 includes a rod head 31, a middle rod 32 and a tail rod 33. The outer diameters of the rod head 31, the middle rod 32 and the tail rod 33 decrease successively. A first channel 34 is provided at the central axis of the fixed rod 3.
[0023] The sliding block 4, the soft seal 5 and the push head 2 are sleeved on the middle rod 32 in sequence.
[0024] The push rod 1 is partially sleeved on the tail rod 33 , and a penetrating second channel 35 is provided at the central axis of the push rod 1 .
[0025] The first channel 34 and the second channel 35 are high-pressure liquid channels. The central axis of the first channel 34 is aligned with the central axis of the second channel 35 , and a gap is left between the first channel 34 and the second channel 35 .
[0026] Embodiment 3:
[0027] On the basis of Example 2, this embodiment improves the shape of the push head 2 and the shape of the push rod 1. The shape of the right side of the push head 2 matches the shape of the left side of the push rod 1. The push rod 1 is used to fix the push head 2, and the push head 2 is connected to the high-pressure pipe.
[0028] The above is only a preferred embodiment of the utility model. It should be understood that the utility model is not limited to the form disclosed herein, and should not be regarded as excluding other embodiments, but can be used in various other combinations, modifications and environments, and can be modified within the scope of the concept described herein through the above teachings or the technology or knowledge of the relevant field. The changes and modifications made by those skilled in the art do not deviate from the spirit and scope of the utility model, and should be within the scope of protection of the claims attached to the utility model.
Claims
1. An internal high-pressure soft-sealed push head structure, characterized in that: The invention comprises a push rod (1), a push head (2), a fixed rod (3) and a slider (4); the slider (4), the push head (2) and the push rod (1) are sleeved on the fixed rod (3) in sequence; a soft seal (5) is provided between the slider (4) and the push head (2); and the outer diameter of the rod head (31) of the fixed rod (3) is greater than the inner diameter of the slider (4).
2. The internal high-pressure soft-sealed pusher head structure according to claim 1, characterized in that: The fixing rod (3) comprises a rod head (31), a middle rod (32) and a tail rod (33); the outer diameters of the rod head (31), the middle rod (32) and the tail rod (33) decrease in sequence; and a first channel (34) penetrating the central axis of the fixing rod (3) is provided.
3. The internal high-pressure soft-sealed push head structure according to claim 2, characterized in that: The sliding block (4), the soft seal (5) and the pushing head (2) are sleeved on the middle rod (32) in sequence.
4. The internal high-pressure soft-sealed push head structure according to claim 3, characterized in that: The push rod (1) is partially sleeved on the tail rod (33), and a penetrating second channel (35) is provided at the central axis of the push rod (1).
5. The internal high-pressure soft-sealed pusher head structure according to claim 4, characterized in that: The central axis of the first channel (34) is aligned with the central axis of the second channel (35), and a gap is left between the first channel (34) and the second channel (35).
6. The internal high-pressure soft-sealed pusher head structure according to claim 1, characterized in that: The shape of the push head (2) matches the shape of the push rod (1).