A cylinder clamping joint of an automobile die-casting mold
By employing a combination design of arc-shaped sleeves, elastic rings, and rotating components in automotive die-casting molds, the problem of loose screw connections was solved, achieving stable mold connections and improved product quality.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- NANJING HEYI INTELLIGENT MFG AUTOMOTIVE LIGHTWEIGHT TECH RES INST CO LTD
- Filing Date
- 2025-07-31
- Publication Date
- 2026-06-26
AI Technical Summary
Traditional screw connections are prone to loosening in automotive die-casting molds, leading to unstable connections, affecting mold precision and product quality, and posing safety hazards.
The design employs a combination of arc-shaped sleeve, elastic ring, rotating component, and mechanical interlock structure. The elastic ring absorbs vibration, while the spring plate locks and the mechanical interlock prevents loosening, thus improving connection stability.
It improves the production safety and product quality of molds, ensures stable connection of molds in vibration environment, prevents loosening and falling off, and improves the dimensional accuracy and shape consistency of products.
Smart Images
Figure CN224406399U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of die-casting mold technology, specifically to a hydraulic cylinder clamping joint for an automotive die-casting mold. Background Technology
[0002] In the manufacturing process of automotive die-casting molds, the connection between the cylinder and the mold is crucial, as its stability directly affects the working accuracy of the mold and the quality of the die-cast products. Traditionally, screws are used to connect the cylinder and mold. This method is relatively simple to install initially and can meet certain production needs. However, in actual production environments, the cylinder frequently reciprocates during operation, generating significant vibration and impact forces. Over time and with increasing production cycles, the screws, subjected to this dynamic load for extended periods, are prone to loosening.
[0003] If the screws loosen, the stability of the connection between the cylinder and the die-casting mold will be significantly compromised. During the die-casting process, the mold needs to open and close precisely according to a predetermined trajectory and force. An unstable connection will cause deviations in the mold's movement, preventing it from accurately reaching the designated position, thus affecting the dimensional accuracy and shape consistency of the die-cast product. For example, it may lead to uneven wall thickness and surface defects in the die-cast parts, severely reducing the product yield and increasing production costs. Furthermore, an unstable connection can also pose safety hazards. In high-speed die-casting equipment, loose parts may detach, causing damage to operators and the equipment.
[0004] Therefore, in order to solve the above problems, the applicant needs to design a hydraulic cylinder clamping joint for automotive die-casting molds. Utility Model Content
[0005] The purpose of this invention is to provide a hydraulic cylinder clamping connector for automotive die-casting molds to solve the problems mentioned in the background section.
[0006] To achieve the above objectives, this utility model provides the following technical solution: a hydraulic cylinder clamping connector for an automotive die-casting mold, comprising two arc-shaped sleeves, a connecting mechanism provided on the outer side of the two arc-shaped sleeves, the connecting mechanism being used to lock the arc-shaped sleeves, the connecting mechanism comprising a clamping sleeve one and a clamping sleeve two, the clamping sleeve one and the clamping sleeve two having a fastening component at their open ends away from the hinge assembly, the fastening component being used to lock the clamping sleeve one and the clamping sleeve two, the fastening component comprising a fixing plate fixedly connected to the clamping sleeve one and the clamping sleeve two, and an extension plate connected to the fixing plate, the extension plate having a mounting shaft, and a rotating component rotatably mounted on the mounting shaft, the rotating component having a limiting hole, and a spring piece being mounted inside the limiting hole, the end of the spring piece away from the limiting hole having a stabilizing plate integrally mounted, and the stabilizing plate being fixedly connected to the extension plate.
[0007] Furthermore, a hinge assembly is provided between the first clamping sleeve and the second clamping sleeve, and the hinge assembly is used to hinge the first clamping sleeve and the second clamping sleeve.
[0008] Furthermore, the hinge assembly includes a mounting plate fixedly connected to clamping sleeve one and clamping sleeve two, and a connecting plate is provided on the mounting plate. A hollow sleeve is fixedly provided on the connecting plate, and a fixed shaft is rotatably provided inside the hollow sleeve.
[0009] Through the above structural design, the combination of mounting plate, connecting plate, hollow sleeve and fixed shaft, a stable hinge connection between clamping sleeve one and clamping sleeve two is achieved.
[0010] Furthermore, an elastic ring is provided on the inner side of the arc-shaped sleeve, and the elastic ring is sleeved with the output end of the external oil cylinder and the die-casting upper mold.
[0011] Furthermore, the material of the elastic ring is rubber.
[0012] Through the above structural design, by adding an elastic ring on the inner side, the deformation capacity of the elastic material is used to tightly fit the output end of the cylinder and the surface of the die-casting mold, compensating for assembly tolerances, thereby effectively absorbing the impact vibration during cylinder operation and improving stability.
[0013] Furthermore, the rotating component is configured as a plurality of components, and the plurality of rotating components are arranged in a linearly staggered array.
[0014] Through the above structural design, the locking force is evenly transmitted to the entire clamping sleeve mating surface through multi-point distributed locking. At the same time, even if a single rotating part fails, the remaining locking points can still maintain connection stability.
[0015] Furthermore, the circumferential sidewall of the rotating component is provided with an anti-disengagement hole, and the inner wall of the limiting hole is correspondingly provided with an elastic pin. When the rotating component rotates to the engaging position, the elastic pin is embedded in the anti-disengagement hole to form a mechanical interlock.
[0016] Through the above structural design, a mechanical interlocking structure with anti-disengagement holes and elastic pins is added, providing double protection against accidental disengagement of rotating parts under vibration.
[0017] Furthermore, the inner walls of both clamping sleeve one and clamping sleeve two are provided with a wear-resistant layer, and the wear-resistant layer is made of 42CrMo steel.
[0018] Through the above structural design, the alloy steel has both ultra-high hardness and impact toughness, which can resist the friction and wear caused by frequent opening and closing of the mold.
[0019] Compared with the prior art, the beneficial effects of this utility model are: the hydraulic cylinder retaining joint of the automobile die-casting mold improves the production safety of the die-casting mold and the quality of the produced products through a triple anti-loosening mechanism of elastic ring absorbing vibration, spring constant force locking and mechanical interlocking. The specific details are as follows:
[0020] When using the hydraulic cylinder clamping connector of this automotive die-casting mold, the operator wraps two arc-shaped sleeves around the connection between the output end of the external hydraulic cylinder and the upper die-casting mold, closing clamping sleeve one and clamping sleeve two to form a clamping structure through the hinge assembly. At this time, the elastic ring on the inner side of the arc-shaped sleeve is compressed and deformed, tightly fitting the surface of the connected parts to achieve initial sealing and buffering. Then, the rotating part of the fastening assembly is turned to rotate around the mounting shaft to the fastening position. The limiting hole on the rotating part compresses the spring to produce elastic deformation. The rebound force of the spring is used to press the rotating part tightly against the extension plate to form a flexible lock. At the same time, the anti-disengagement hole and the elastic pin engage to form a rigid interlock. Finally, the two arc-shaped sleeves are rigidly clamped by clamping sleeve one and clamping sleeve two. Under vibration conditions, the elastic ring absorbs the impact, the spring maintains the locking force, and the mechanical interlock prevents loosening, achieving a stable connection, thereby improving safety and improving the quality of products produced by the mold. Attached Figure Description
[0021] Figure 1 This is a schematic diagram of the overall three-dimensional structure of the present invention;
[0022] Figure 2 This is a three-dimensional structural diagram of the connecting mechanism of this utility model;
[0023] Figure 3 This is a three-dimensional structural diagram of the hinge assembly of this utility model;
[0024] Figure 4 This is a three-dimensional structural diagram of the fastening component of this utility model;
[0025] Figure 5 This is a schematic diagram of the connection structure between the rotating component and the spring sheet of this utility model;
[0026] Figure 6 This is a schematic diagram showing the connection between the elastic ring of this utility model and the external oil cylinder and the upper mold.
[0027] In the diagram: 1. Arc-shaped sleeve; 2. Connecting mechanism; 10. Elastic ring; 20. Clamping sleeve one; 21. Hinge assembly; 22. Clamping sleeve two; 23. Fastening assembly; 210. Mounting plate; 211. Connecting plate; 212. Hollow sleeve; 213. Fixed shaft; 230. Fixed plate; 231. Extension plate; 232. Mounting shaft; 233. Rotating component; 234. Limiting hole; 235. Spring piece; 236. Stabilizing plate; 237. Anti-detachment hole. Detailed Implementation
[0028] 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.
[0029] like Figures 1-6 As shown, this utility model discloses a hydraulic cylinder clamping connector for an automotive die-casting mold, including two arc-shaped sleeves 1. A connecting mechanism 2 is provided on the outer side of the two arc-shaped sleeves 1, and the connecting mechanism 2 is used to lock the arc-shaped sleeves 1. The connecting mechanism 2 includes a clamping sleeve one 20 and a clamping sleeve two 22. A fastening component 23 is provided at the open end of the clamping sleeve one 20 and the clamping sleeve two 22 away from the hinge assembly 21, and the fastening component 23 is used to lock the clamping sleeve one 20 and the clamping sleeve two 22. The fastening component 23 includes a clamping sleeve one 20 and a clamping sleeve two 22. A fixed plate 230 is fixedly connected to a first sleeve 20 and a second clamping sleeve 22. An extension plate 231 is connected to the fixed plate 230. An installation shaft 232 is provided on the extension plate 231. A rotating component 233 is rotatably provided on the installation shaft 232. A limiting hole 234 is provided on the rotating component 233. A spring piece 235 is provided in the limiting hole 234. A stabilizing plate 236 is integrally provided at the end of the spring piece 235 away from the limiting hole 234. The stabilizing plate 236 is fixedly connected to the extension plate 231.
[0030] like Figures 1-3 As shown, a hinge assembly 21 is provided between clamping sleeve 1 20 and clamping sleeve 22, and the hinge assembly 21 is used to hinge clamping sleeve 1 20 and clamping sleeve 22. The hinge assembly 21 includes a mounting plate 210 fixedly connected to clamping sleeve 1 20 and clamping sleeve 22, and a connecting plate 211 is provided on the mounting plate 210. A hollow sleeve 212 is fixedly provided on the connecting plate 211, and a fixed shaft 213 is rotatably provided inside the hollow sleeve 212. Through the above structural design, the combination design of mounting plate 210, connecting plate 211, hollow sleeve 212 and fixed shaft 213 achieves a stable hinge between clamping sleeve 1 20 and clamping sleeve 22, provides a reliable rotation fulcrum, makes the opening and closing action of the clamping sleeve smooth and accurate, and avoids locking failure due to loose hinge.
[0031] like Figure 6 As shown, an elastic ring 10 is provided on the inner side of the arc sleeve 1, and the elastic ring 10 is sleeved with the output end of the external oil cylinder and the die-casting upper mold. By adding an elastic ring 10 on the inner side, the deformation ability of the elastic material is used to tightly fit the output end of the oil cylinder and the surface of the die-casting mold, compensate for assembly tolerances, and thus effectively absorb the impact vibration during the operation of the cylinder and reduce the dynamic load transmitted to the connecting mechanism 2.
[0032] The elastic ring 10 is made of rubber. The high elasticity and damping properties of rubber can significantly attenuate high-frequency vibration energy, while providing excellent sealing and dustproofing. At the same time, it combines wear resistance and flexibility, which not only extends the service life but also avoids damage to the surface of the cylinder or mold.
[0033] like Figures 4-5 As shown, there are several rotating parts 233 arranged in a linear staggered array. The linear staggered array of multiple rotating parts 233 will distribute the locking force evenly to the entire clamping sleeve mating surface through multi-point distributed locking, eliminating local stress concentration. At the same time, even if a single rotating part 233 fails, the remaining locking points can still maintain connection stability and improve the redundancy safety factor.
[0034] The circumferential sidewall of the rotating part 233 is provided with an anti-disengagement hole 237, and the inner wall of the limiting hole 234 is provided with an elastic pin. When the rotating part 233 rotates to the fastening position, the elastic pin is embedded in the anti-disengagement hole 237 to form a mechanical interlock. The mechanical interlock structure of the anti-disengagement hole 237 and the elastic pin will form a rigid anti-reverse on the basis of the flexible locking of the spring piece 235, and doubly ensure that the rotating part 233 will not accidentally disengage in the vibration environment.
[0035] Both clamping sleeve 1 20 and clamping sleeve 2 22 have wear-resistant layers on their inner walls, and the wear-resistant layers are made of 42CrMo steel. 42CrMo steel has both ultra-high hardness and impact toughness, which can resist the friction and wear caused by frequent opening and closing of the mold. At the same time, its high temperature stability ensures that dimensional accuracy is maintained under the hot conditions of die casting, and avoids the decrease in clamping force due to wear.
[0036] When using the cylinder clamping connector of this automotive die-casting mold, the operator wraps two arc-shaped sleeves 1 around the connection between the external cylinder output end and the die-casting upper mold, closing the clamping sleeve one 20 and clamping sleeve two 22 so that they form a clamping structure through the hinge assembly 21. At this time, the elastic ring 10 on the inner side of the arc-shaped sleeve 1 is compressed and deformed, tightly fitting the surface of the connected parts to achieve initial sealing and buffering. Then, the rotating part 233 of the fastening assembly 23 is turned to rotate around the mounting shaft 232 to the fastening position. The limiting hole 234 on the rotating part 233 compresses the spring piece 235 to produce elastic deformation. The rebound force of the spring piece 235 is used to press the rotating part 233 tightly onto the extension plate 231 to form a flexible lock. At the same time, the anti-disengagement hole 237 engages with the elastic pin to form a rigid interlock. Finally, the two arc-shaped sleeves 1 are rigidly clamped by the clamping sleeve 1 20 and the clamping sleeve 22. Under vibration conditions, the elastic ring 10 absorbs the impact, the spring piece 235 maintains the locking force, and the mechanical interlock prevents loosening, thus achieving a stable connection.
[0037] Based on the above-described preferred embodiments of this utility model, and through the foregoing description, those skilled in the art can make various changes and modifications without departing from the technical concept of this utility model. The technical scope of this utility model is not limited to the contents of the specification, but must be determined according to the scope of the claims.
Claims
1. A hydraulic cylinder retaining connector for an automotive die-casting mold, characterized in that, The device includes two arc-shaped sleeves (1), with a connecting mechanism (2) on the outer side of each arc-shaped sleeve (1). The connecting mechanism (2) is used to lock the arc-shaped sleeves (1). The connecting mechanism (2) includes a clamping sleeve one (20) and a clamping sleeve two (22). A fastening component (23) is provided at the open end of the clamping sleeve one (20) and the clamping sleeve two (22) away from the hinge assembly (21). The fastening component (23) is used to lock the clamping sleeve one (20) and the clamping sleeve two (22). The fastening component (23) includes components that are connected to the clamping sleeve one (20) and the clamping sleeve two (22). 2) A fixed plate (230) is fixedly connected, and an extension plate (231) is connected to the fixed plate (230). An installation shaft (232) is provided on the extension plate (231), and a rotating part (233) is rotatably provided on the installation shaft (232). A limiting hole (234) is provided on the rotating part (233), and a spring piece (235) is provided in the limiting hole (234). A stabilizing plate (236) is integrally provided at the end of the spring piece (235) away from the limiting hole (234), and the stabilizing plate (236) is fixedly connected to the extension plate (231).
2. The hydraulic cylinder clamping joint for an automotive die-casting mold according to claim 1, characterized in that: A hinge assembly (21) is provided between the first clamping sleeve (20) and the second clamping sleeve (22), and the hinge assembly (21) is used to hinge the first clamping sleeve (20) and the second clamping sleeve (22).
3. The hydraulic cylinder clamping joint for an automotive die-casting mold according to claim 2, characterized in that: The hinge assembly (21) includes a mounting plate (210) fixedly connected to clamping sleeve one (20) and clamping sleeve two (22), and a connecting plate (211) is provided on the mounting plate (210). A hollow sleeve (212) is fixedly provided on the connecting plate (211), and a fixed shaft (213) is rotatably provided inside the hollow sleeve (212).
4. The hydraulic cylinder clamping joint for an automotive die-casting mold according to claim 1, characterized in that: An elastic ring (10) is provided on the inner side of the arc sleeve (1), and the elastic ring (10) is sleeved with the output end of the external oil cylinder and the die-casting upper mold.
5. The hydraulic cylinder clamping joint for an automotive die-casting mold according to claim 4, characterized in that: The elastic ring (10) is made of rubber.
6. The hydraulic cylinder clamping joint for an automotive die-casting mold according to claim 1, characterized in that: The rotating component (233) is configured as a plurality of components, and the plurality of rotating components (233) are arranged in a linearly staggered array.
7. The hydraulic cylinder clamping joint for an automotive die-casting mold according to claim 1, characterized in that: The circumferential sidewall of the rotating component (233) is provided with an anti-disengagement hole (237), and the inner wall of the limiting hole (234) is provided with an elastic pin. When the rotating component (233) rotates to the engaging position, the elastic pin is embedded in the anti-disengagement hole (237) to form a mechanical interlock.
8. The hydraulic cylinder clamping joint for an automotive die-casting mold according to claim 1, characterized in that: The inner walls of the clamping sleeve one (20) and the clamping sleeve two (22) are provided with a wear-resistant layer, and the wear-resistant layer is made of 42CrMo steel.