Stroke-adjustable air cylinder
By designing an adjustable stroke cylinder, the problems of unstable valve needle height and fixed stroke were solved, enabling adjustment of valve needle position and stroke without disassembling the cylinder head, thus improving the stability and adaptability of the cylinder.
Patent Information
- Application Number
- CN202423141954.2
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-12-19
- Publication Date
- 2025-10-28
- Estimated Expiration
- 2034-12-19
AI Technical Summary
The height of the valve pin in the existing cylinder mold is unstable due to thermal expansion and processing accuracy issues, and the fixed stroke cannot adapt to the requirements of different models.
Design an adjustable stroke cylinder that allows adjustment of the valve needle position without disassembling the cylinder head and changes of the stroke via a cylinder adjustment plate by setting a valve needle adjustment assembly and adjustment mechanism.
This technology enables stable sealing and adaptability to different stroke requirements without changing the cylinder, thus improving the flexibility and precision of cylinder use.
Smart Images
Figure CN223483035U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of cylinder technology, and in particular to an adjustable stroke cylinder. Background Technology
[0002] In the field of mechanical equipment, various types of cylinders are frequently used. A cylinder is a cylindrical metal component that guides a piston to perform linear reciprocating motion within the cylinder. In an engine cylinder, air expands, converting thermal energy into mechanical energy; in a compressor cylinder, gas is compressed by a piston, increasing its pressure.
[0003] Currently, there are two problems in the use of cylinders. First, due to factors such as thermal expansion, mold machining accuracy, and valve needle machining accuracy, the valve needle height in the mold may deviate during sealing, resulting in issues such as the valve needle penetrating the product or failing to seal stably. Therefore, a cylinder with easily adjustable valve needle height is needed, which requires disassembling the cylinder head for adjustment. Second, during cylinder use, the cylinder's extension and retraction stroke is a fixed value. When it is not possible to replace it with a larger cylinder, the cylinder may not meet the actual usage requirements. To address this, we propose an adjustable stroke cylinder. Utility Model Content
[0004] The purpose of this utility model is to provide an adjustable stroke cylinder. By setting a valve needle adjustment component, the valve needle body can be adjusted without disassembling the cylinder head. Furthermore, the stroke of the cylinder can be changed by using an adjustment mechanism and a cylinder adjustment plate.
[0005] To achieve the above objectives, the present invention provides the following technical solution: an adjustable stroke cylinder, comprising an adjustment mechanism, wherein the adjustment mechanism comprises a cylinder head, a cylinder body and a cylinder adjustment plate;
[0006] The cylinder head is located at the end of the cylinder block, and the cylinder adjusting plate is located between the cylinder head and the cylinder block;
[0007] A connecting assembly is provided between the cylinder head and the cylinder block, and the connecting assembly is used to connect the cylinder head and the cylinder block.
[0008] The cylinder body is provided with a valve needle body, and a valve needle adjustment component is provided on one side of the valve needle body, and the valve needle adjustment component is used to adjust the position of the valve needle body.
[0009] Preferably, the connecting assembly includes a cylinder fixing screw that is threaded to the other side of the cylinder head, and the cylinder head fixing screw is threaded to the cylinder block, with a cylinder head fixing screw inserted into one side of the cylinder head.
[0010] Preferably, the valve needle adjustment assembly includes a chamber located in the middle of the cylinder, a valve needle body slidably connected to the interior of the chamber, a slide body connected to the end of the valve needle body, a valve needle adjustment block connected to the outside of the valve needle body, and an inlet / outlet structure communicating with the chamber.
[0011] Preferably, the air inlet and outlet structure includes a first air passage and a second air passage that are respectively connected to the chamber, and one end of the first air passage and one end of the second air passage both extend to the outside of the cylinder body.
[0012] Preferably, a valve needle throat plug is provided on the end face of the valve needle body, and an adjusting block throat plug is provided on one side of the valve needle throat plug.
[0013] Preferably, two KY sealing rings are sequentially provided on the end face of the cylinder head, and the KY sealing rings are used to seal the connection between the cylinder head and the cylinder block. An inner retaining spring is also provided at the mating point between the cylinder head and the cylinder block.
[0014] The technical effects and advantages of this utility model are:
[0015] By setting an adjustment mechanism, the cylinder adjustment plate can be easily set as a standard part. By using cylinder adjustment plates of different thicknesses, and then connecting the cylinder adjustment plate between the cylinder head and the cylinder body with the connecting assembly, the extension and retraction stroke of the cylinder can be improved. In this way, without replacing different models of cylinders, the extension and retraction stroke of the cylinder can meet the actual use requirements. At the same time, the position of the valve needle body can be adjusted by using the valve needle adjustment assembly, so that the valve needle body can be easily adjusted without disassembling the cylinder head, thereby stabilizing the sealing. Attached Figure Description
[0016] Figure 1 This is a schematic diagram of the internal structure of this utility model.
[0017] In the diagram: 1. Cylinder head; 2. Cylinder block; 3. Cylinder adjusting plate; 4. Slider; 5. Valve needle adjusting block; 6. Adjusting block throat plug; 7. Valve needle body; 8. Valve needle throat plug; 9. KY sealing ring; 10. Inner snap ring; 11. Cylinder fixing screw; 12. Cylinder head fixing screw; 13. First air passage; 14. Second air passage. Detailed Implementation
[0018] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the embodiments described are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.
[0019] This utility model provides, for example Figure 1An adjustable stroke cylinder is shown, including an adjustment mechanism comprising a cylinder head 1, a cylinder body 2, and a cylinder adjustment plate 3. The cylinder head 1 is located at the end of the cylinder body 2, and the cylinder adjustment plate 3 is located between the cylinder head 1 and the cylinder body 2. A connecting assembly is provided between the cylinder head 1 and the cylinder body 2, and the connecting assembly is used to connect the cylinder head 1 and the cylinder body 2. A valve needle body 7 is provided on the cylinder body 2, and a valve needle adjustment assembly is provided on one side of the valve needle body 7, and the valve needle adjustment assembly is used to adjust the position of the valve needle body 7. By setting the adjustment mechanism, it is convenient to set the cylinder adjustment plate 3 as a standard part, using cylinder adjustment plates 3 of different thicknesses, and then connecting the cylinder adjustment plate 3 between the cylinder head 1 and the cylinder body 2 with the connecting assembly, thereby increasing the extension stroke of the adjustable cylinder. In this way, without replacing different models of cylinders, the extension stroke of the cylinder can meet the actual use requirements. At the same time, the position of the valve needle body 7 can be adjusted by using the valve needle adjustment assembly, thereby facilitating stable sealing.
[0020] Furthermore, the connecting assembly includes a cylinder fixing screw 11 that is threaded to the other side of the cylinder head 1, and a cylinder head fixing screw 12 that is threaded to the cylinder block 2. A cylinder head fixing screw 12 is inserted into one side of the cylinder head 1. The cylinder head fixing screw 12 is used to connect the cylinder block 2 and the cylinder head 1, while the cylinder fixing screw 11 also facilitates the fixing of the cylinder.
[0021] Furthermore, the valve needle adjustment assembly includes a chamber located in the middle of the cylinder body 2, a valve needle body 7 slidably connected to the interior of the chamber, a slide body 4 connected to the end of the valve needle body 7, a valve needle adjustment block 5 connected to the outside of the valve needle body 7, and an air inlet / outlet structure communicating with the chamber. The air inlet / outlet structure includes a first air passage 13 and a second air passage 14 respectively communicating with the chamber, and one end of the first air passage 13 and one end of the second air passage 14 both extend to the outside of the cylinder body 2. The chamber is inflated through the second air passage 14, causing the slide body 4 to move upward. The slide body 4 drives the valve needle adjustment block 5 and its valve needle body 7 to move upward, at which point the mold can be used for injection molding. After the injection is completed, air is introduced through the first air passage 13, causing the slide body 4 to move downward, thereby driving the valve needle adjustment block 5 to move downward, and then driving the valve needle body 7 to move downward. At this time, the valve needle body 7 closes the mold cavity.
[0022] Furthermore, a valve needle throat plug 8 is provided on the end face of the valve needle body 7, and an adjusting block throat plug 6 is provided on one side of the valve needle throat plug 8; the valve needle throat plug 8 and the adjusting block throat plug 6 are used for sealing.
[0023] Furthermore, two KY sealing rings 9 are sequentially provided on the end face of the cylinder head 1, and the KY sealing rings 9 are used to seal the connection between the cylinder head 1 and the cylinder block 2. An inner retaining spring 10 is also provided at the mating point between the cylinder head 1 and the cylinder block 2. The KY sealing rings 9 are used to connect and seal the cylinder head 1 and the cylinder block 2.
[0024] Finally, it should be noted that the above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Although the present utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.
Claims
1. An adjustable stroke cylinder, characterized in that, It includes an adjustment mechanism, which includes a cylinder head (1), a cylinder body (2), and a cylinder adjustment plate (3); The cylinder head (1) is located at the end of the cylinder body (2), and the cylinder adjusting plate (3) is located between the cylinder head (1) and the cylinder body (2); A connecting component is provided between the cylinder head (1) and the cylinder block (2), and the connecting component is used to connect the cylinder head (1) and the cylinder block (2); The cylinder body (2) is provided with a valve needle body (7), and a valve needle adjustment component is provided on one side of the valve needle body (7), and the valve needle adjustment component is used to adjust the position of the valve needle body (7).
2. The adjustable stroke cylinder according to claim 1, characterized in that, The connecting assembly includes a cylinder fixing screw (11) that is threaded to the other side of the cylinder head (1), and a cylinder head fixing screw (12) that is threaded to the cylinder body (2). A cylinder head fixing screw (12) is inserted into one side of the cylinder head (1).
3. The adjustable stroke cylinder according to claim 1, characterized in that, The valve needle adjustment assembly includes a chamber located in the middle of the cylinder (2), a valve needle body (7) slidably connected to the interior of the chamber, a slide body (4) connected to the end of the valve needle body (7), a valve needle adjustment block (5) connected to the outside of the valve needle body (7), and an air inlet / outlet structure communicating with the chamber.
4. An adjustable stroke cylinder according to claim 3, characterized in that, The air intake and exhaust structure includes a first air passage (13) and a second air passage (14) that are respectively connected to the chamber, and one end of the first air passage (13) and one end of the second air passage (14) extend to the outside of the cylinder (2).
5. An adjustable stroke cylinder according to claim 4, characterized in that, The valve needle body (7) has a valve needle throat plug (8) on its end face, and an adjustment block throat plug (6) is provided on one side of the valve needle throat plug (8).
6. An adjustable stroke cylinder according to claim 5, characterized in that, Two KY sealing rings (9) are sequentially provided on the end face of the cylinder head (1), and the KY sealing rings (9) are used to seal the connection between the cylinder head (1) and the cylinder body (2). An inner snap ring (10) is also provided at the joint between the cylinder head (1) and the cylinder body (2).