Core-pulling quick-changing mechanism
By designing a combined structure of the core extraction cylinder, the connecting cylinder and the sleeve fixing ring, the problem of core extraction and jamming of the die-casting mold is solved, and the rapid replacement and maintenance of the core extraction is achieved, reducing the cost and downtime of the die-casting.
Patent Information
- Application Number
- CN202323347770.7
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2023-12-08
- Publication Date
- 2024-12-20
- Estimated Expiration
- 2033-12-08
AI Technical Summary
The core extraction structure of the existing die-casting mold is complex, which leads to difficulty in disassembly and frequent jamming, and the cost of shutdown and replacement is high, and the traditional structure cannot be replaced quickly, which affects production efficiency and cost control.
Design a quick core removal mechanism, through the combined structure of the core extraction cylinder, the connecting cylinder and the sleeve fixing ring, the rapid disassembly and replacement of the core extraction core is achieved, and the disassembly process is simplified by using the prying slot and slot mechanism to ensure the core extraction and Stable connection and independent processing of the sleeve.
It realizes rapid replacement and maintenance of core extraction, reduces die-casting downtime and cost, simplifies mold structure, facilitates manufacturing and maintenance, and reduces processing complexity.
Smart Images
Figure CN222198833U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the technical field of die casting, in particular to a core-pulling quick-change mechanism. Background Art
[0002] The die casting process is a casting process that uses high pressure to press molten metal into the cavity of a precision metal mold at high speed, so that the molten metal cools and solidifies under pressure to form a casting. When the side wall of a metal casting has a through hole, groove or boss, the metal casting cannot be directly removed from the mold. The forming parts of the forming hole, groove and boss must be made movable, which is called a movable core. The structure that completes the extraction and reset of the movable core is called a core pulling structure.
[0003] In automotive die-castings, product shapes and structures are becoming more and more complex, and the corresponding integrated die-casting mold structures are also becoming more and more complex, resulting in the following disadvantages in the current mold core pulling: 1. The size of the mold core pulling is large, which makes disassembly difficult; 2. The working conditions of the die-casting mold are complex and harsh, and the core pulling and the sleeve often get stuck. The core pulling needs to be stopped for replacement. According to the traditional structure, the sleeve is fixed in the insert and cannot be quickly replaced. After getting stuck, the core pulling will be difficult to remove, and it may even cause the entire mold to be removed from the machine. The core pulling and the sleeve can only be removed after the mold insert is removed; 3. The shutdown cost of integrated die-casting is high.
[0004] Therefore, it is necessary to design a core-pulling quick-change mechanism that is easy and simple to replace, easy to maintain and can reduce processing costs. Utility Model Content
[0005] In order to overcome the deficiencies of the prior art, the utility model aims to provide a core-pulling quick-change mechanism which is simple, reliable, easy to maintain, and does not increase the cost of the mold.
[0006] The purpose of the utility model is achieved by the following technical solutions:
[0007] According to a first aspect of an embodiment of the present disclosure, a core-pulling quick-change mechanism is provided, comprising a core-pulling cylinder, which is installed on the outside of a mold frame through a core-pulling cylinder fixing plate, and the output shaft of the core-pulling cylinder is fixedly connected to a core-pulling connecting cylinder, and the front end of the core-pulling connecting cylinder is fixedly connected to a core pulling device; wherein, the front end of the core-pulling connecting cylinder and the core pulling device are located in a mold insert installed on the inner side of the mold frame, a core-pulling sleeve is arranged in the mold insert, the core pulling device is inserted in the core-pulling sleeve, and a sleeve fixing ring is arranged on the outer side of the rear end of the core-pulling sleeve, and the sleeve fixing ring is connected to the front end of the core-pulling connecting cylinder.
[0008] As a preferred solution, the core-pulling sleeve includes a cap portion located at its rear section and a rod portion connected to the front end of the cap portion, and the cross-sectional area of the cap portion is larger than the cross-sectional area of the rod portion; the inner cavity of the sleeve fixing ring includes an expansion cavity located in the middle and a contraction cavity connected to both ends of the expansion cavity, and the inner diameter of the expansion cavity is larger than the inner diameter of the contraction cavity; the cap portion is arranged in the expansion cavity, and the cross-sectional area of the cap portion is larger than the cross-sectional area of the contraction cavity.
[0009] As a preferred solution, the core-pulling cylinder fixing plate is provided with a through hole for the output shaft of the core-pulling cylinder to pass through; and a prying groove is provided on one side of the core-pulling cylinder fixing plate close to the mold sleeve frame.
[0010] As a preferred solution, a rear slot for inserting the output shaft of the core-pulling cylinder is provided at the rear end of the core-pulling connecting tube, wherein the output shaft of the core-pulling cylinder is tightly connected to the rear slot.
[0011] As a preferred solution, a front slot for inserting the core pulling is provided at the front end of the core pulling connection tube, wherein the core pulling is tightly connected to the front slot.
[0012] As a preferred solution, the rear end of the core pulling is enlarged to form an enlarged diameter section, and the rear section of the front slot of the core pulling connecting tube is enlarged to form an enlarged diameter groove, and the enlarged diameter section is located in the enlarged diameter groove.
[0013] As a preferred solution, the outer side of the core pulling connecting cylinder is provided with a core pulling sleeve fixing cylinder, the rear end of the core pulling sleeve fixing cylinder is abutted against the core pulling cylinder fixing plate, and the front end of the core pulling sleeve fixing cylinder is connected to the core pulling sleeve, wherein the rear end of the core pulling sleeve is tightly inserted in the front end of the core pulling sleeve fixing cylinder.
[0014] As a preferred solution, the axial center lines of the output shaft of the core-pulling cylinder, the core-pulling cylinder fixing plate, the core-pulling connecting tube, the core-pulling, the core-pulling sleeve and the sleeve fixing ring coincide with each other.
[0015] To sum up, compared with the prior art, the utility model has the following beneficial effects: the core pulling connecting cylinder is used to fix the core pulling, the core pulling connecting cylinder fixes the core pulling, the sleeve fixing ring is connected to the sleeve, and the core pulling sleeve fixing cylinder fixes the sleeve fixing ring; when the core pulling is stuck with the sleeve, the entire core pulling quick change mechanism can be pried out by prying out the groove, and the entire core pulling quick change mechanism can be removed as a whole; the mold structure is simple, easy to manufacture, and easy to disassemble, and can be quickly replaced on the die-casting machine, reducing downtime and reducing die-casting costs. BRIEF DESCRIPTION OF THE DRAWINGS
[0016] Figure 1 This is a schematic diagram of the internal structure of the core-pulling quick-change mechanism of the utility model;
[0017] Figure 2 This is a schematic diagram of the structure of the fixing ring of the sleeve in the utility model;
[0018] Figure 3 It is a structural schematic diagram of the fixing plate of the core-pulling cylinder in the utility model.
[0019] The numbers and letters in the figure represent the corresponding component names:
[0020] 1. Core-pulling cylinder; 11. Output shaft; 2. Core-pulling cylinder fixing plate; 21. Pry-out groove; 3. Core-pulling connecting tube; 31. Rear slot; 32. Front slot; 321. Expansion groove; 4. Core-pulling; 41. Expansion section; 5. Core-pulling sleeve; 51. Cap; 52. Rod; 6. Sleeve fixing ring; 61. Expansion cavity; 62. Contraction cavity; 7. Mold frame; 8. Mold insert; 9. Core-pulling sleeve fixing tube. DETAILED DESCRIPTION
[0021] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.
[0022] Embodiment 1:
[0023] like Figures 1 to 3 As shown, a core-pulling quick-change mechanism includes a core-pulling cylinder 1, which is installed on the outside of a mold frame 7 through a core-pulling cylinder fixing plate 2, and an output shaft 11 of the core-pulling cylinder 1 is fixedly connected to a core-pulling connecting tube 3, and a front end of the core-pulling connecting tube 3 is fixedly connected to a core-pulling 4; wherein, the front end of the core-pulling connecting tube 3 and the core-pulling 4 are located in a mold insert 8 installed on the inner side of the mold frame 7, a core-pulling sleeve 5 is arranged in the mold insert 8, the core-pulling 4 is inserted in the core-pulling sleeve 5, and a sleeve fixing ring 6 is arranged on the outer side of the rear end of the core-pulling sleeve 5, and the sleeve fixing ring 6 is connected to the front end of the core-pulling connecting tube 3.
[0024] In this embodiment, the core pulling quick-change mechanism is integrated into one by fixing the core pulling connecting cylinder with the core pulling connecting cylinder, fixing the core pulling with the core pulling, connecting the sleeve with the sleeve with the core pulling fixing ring, and fixing the sleeve with the core pulling sleeve fixing cylinder with the sleeve fixing ring. When the core pulling is stuck with the sleeve, the entire core pulling quick-change mechanism can be pried out by prying the core pulling cylinder fixing plate from outside the mold frame. It is easy to disassemble and can be quickly replaced on the die-casting machine, thereby reducing downtime and reducing die-casting costs.
[0025] Specifically, Figure 2As shown, the core-pulling sleeve 5 includes a cap portion 51 located at its rear section and a rod portion 52 connected to the front end of the cap portion 51, and the cross-sectional area of the cap portion 51 is larger than the cross-sectional area of the rod portion 52; the inner cavity of the sleeve fixing ring 6 includes an expansion cavity 61 located in the middle and a contraction cavity 62 connected to the front and rear ends of the expansion cavity 61, and the inner diameter of the expansion cavity 61 is larger than the inner diameter of the contraction cavity 62; the cap portion 51 is arranged in the expansion cavity, and the cross-sectional area of the cap portion 51 is larger than the cross-sectional area of the contraction cavity 62.
[0026] In this embodiment, the connection stability between the core-pulling sleeve and the sleeve fixing ring can be ensured, and disassembly is convenient.
[0027] Specifically, Figure 3 As shown, the core-pulling cylinder fixing plate 2 is provided with a through hole for the output shaft 11 of the core-pulling cylinder 1 to pass through; and a prying groove 21 is provided on one side of the core-pulling cylinder fixing plate 2 close to the mold sleeve frame 7 .
[0028] In this embodiment, the prying groove facilitates the insertion of a pry bar to apply force to disassemble the entire core-pulling quick-change mechanism, thereby reducing the labor burden of the staff.
[0029] Specifically, Figure 1 and Figure 3 As shown, the rear end of the core-pulling connecting tube 3 is provided with a rear slot 31 for inserting the output shaft 11 of the core-pulling cylinder 1 , wherein the output shaft 11 of the core-pulling cylinder 1 is tightly connected to the rear slot 31 .
[0030] Specifically, Figure 1 and Figure 2 As shown, the front end of the core-pulling connecting tube 3 is provided with a front slot 32 for inserting the core-pulling 4 , wherein the core-pulling 4 and the front slot 32 are in a tightly connected relationship.
[0031] Specifically, Figure 2 As shown, the rear end of the core pulling 4 is enlarged to form an enlarged diameter section 41 , and the rear section of the front slot 32 of the core pulling connecting tube 3 is enlarged to form an enlarged diameter groove 321 , and the enlarged diameter section 41 is located in the enlarged diameter groove 321 .
[0032] In this embodiment, the core pulling device and the core pulling connecting tube can be stably connected together.
[0033] Specifically, Figure 1 and Figure 2 As shown, the outer side of the core pulling connecting cylinder 3 is provided with a core pulling sleeve fixing cylinder 9, the rear end of the core pulling sleeve fixing cylinder 9 is abutted against the core pulling cylinder fixing plate 2, and the front end of the core pulling sleeve fixing cylinder 9 is connected to the core pulling sleeve 5, wherein the rear end of the core pulling sleeve 5 is tightly inserted in the front end of the core pulling sleeve fixing cylinder 9.
[0034] In this embodiment, the core pulling sleeve fixing tube and the core pulling sleeve are two independent parts. Compared with the traditional technology in which the two are integrated as one component, the present application designs them as two independent parts, which is more convenient to process and reduces the processing cost.
[0035] Specifically, Figure 1 As shown, the axial center lines of the output shaft 11 of the core pulling cylinder 1, the core pulling cylinder fixing plate 2, the core pulling connecting tube 3, the core pulling 4, the core pulling sleeve 5, the sleeve fixing ring 6, and the core pulling sleeve fixing tube 9 coincide with each other.
[0036] In this embodiment, it can be ensured that when prying outside the mold frame, the output shaft, the core pulling cylinder fixing plate, the core pulling connecting tube, the core pulling, the core pulling sleeve, the sleeve fixing ring, and the core pulling sleeve fixing tube are in the same straight line, which can be more convenient when disassembling.
[0037] The above embodiments only express several implementation methods of the utility model, and the descriptions are relatively specific and detailed, but they cannot be understood as limiting the scope of the utility model patent. It should be pointed out that for ordinary technicians in this field, without departing from the concept of the utility model, several modifications and improvements can be made, which are equivalent modifications and improvements made to the above embodiments based on the essential technology of the utility model, and all of them belong to the protection scope of the utility model.
Claims
1. A core-pulling quick-change mechanism, characterized in that: It includes a core-pulling cylinder, which is installed on the outside of the mold frame through a core-pulling cylinder fixing plate. The output shaft of the core-pulling cylinder is fixedly connected to a core-pulling connecting tube, and the front end of the core-pulling connecting tube is fixedly connected to the core pulling; wherein, the front end of the core-pulling connecting tube and the core pulling are located in a mold insert installed on the inner side of the mold frame, a core-pulling sleeve is arranged in the mold insert, the core pulling is inserted in the core-pulling sleeve, and a sleeve fixing ring is arranged on the outer side of the rear end of the core-pulling sleeve, and the sleeve fixing ring is connected to the front end of the core-pulling connecting tube.
2. A core-pulling quick-change mechanism according to claim 1, characterized in that: The core-pulling sleeve includes a cap portion located at its rear section and a rod portion connected to the front end of the cap portion, and the cross-sectional area of the cap portion is larger than the cross-sectional area of the rod portion; the inner cavity of the sleeve fixing ring includes an expansion cavity located in the middle and a contraction cavity connected to both ends of the expansion cavity, and the inner diameter of the expansion cavity is larger than the inner diameter of the contraction cavity; the cap portion is arranged in the expansion cavity, and the cross-sectional area of the cap portion is larger than the cross-sectional area of the contraction cavity.
3. A core-pulling quick-change mechanism according to claim 1, characterized in that: The core-pulling oil cylinder fixing plate is provided with a through hole for the output shaft of the core-pulling oil cylinder to pass through; and a prying groove is provided on one side of the core-pulling oil cylinder fixing plate close to the mold sleeve frame.
4. A core-pulling quick-change mechanism according to claim 3, characterized in that: The rear end of the core-pulling connecting tube is provided with a rear slot for inserting the output shaft of the core-pulling oil cylinder, wherein the output shaft of the core-pulling oil cylinder is tightly connected to the rear slot.
5. The core-pulling quick-change mechanism according to claim 1, characterized in that: The front end of the core-pulling connecting tube is provided with a front slot for inserting the core-pulling device, wherein the core-pulling device and the front slot are in a tightly connected relationship.
6. A core-pulling quick-change mechanism according to claim 5, characterized in that: The rear end of the core pulling is expanded to form an expanded diameter section, and the rear section of the front slot of the core pulling connecting tube is expanded to form an expanded diameter groove, and the expanded diameter section is located in the expanded diameter groove.
7. The core-pulling quick-change mechanism according to claim 5, characterized in that: The outer side of the core pulling connecting cylinder is provided with a core pulling sleeve fixing cylinder, the rear end of the core pulling sleeve fixing cylinder is abutted against the core pulling cylinder fixing plate, and the front end of the core pulling sleeve fixing cylinder is connected to the core pulling sleeve, wherein the rear end of the core pulling sleeve is tightly inserted in the front end of the core pulling sleeve fixing cylinder.
8. The core-pulling quick-change mechanism according to claim 1, characterized in that: The axial center lines of the output shaft of the core-pulling oil cylinder, the core-pulling oil cylinder fixing plate, the core-pulling connecting tube, the core-pulling, the core-pulling sleeve and the sleeve fixing ring coincide with each other.