Insulation sleeve for feeding cylinder of extrusion casting machine
By designing a compact extrusion casting machine feed barrel insulation sleeve, the annular tortuous flow of thermally conductive oil is used to transfer heat, which solves the problem of excessively fast cooling of metal liquid during extrusion casting, and improves the molding quality and pass rate of the product.
Patent Information
- Application Number
- CN202421159352.7
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-05-27
- Publication Date
- 2025-03-18
- Estimated Expiration
- 2034-05-27
AI Technical Summary
During the extrusion casting process, due to the large temperature difference between the high-temperature metal liquid and the ambient temperature, the metal liquid cools too quickly, resulting in product molding defects and low pass rate.
An extrusion casting machine inlet barrel insulation sleeve is designed, adopting a compact structure and a combination of multiple sets of annular ribs and vertical baffles. Through the annular tortuous flow of thermally conductive oil, heat is effectively transmitted to the inlet barrel and slowed down the cooling rate of the metal liquid.
It significantly reduces the cooling speed of the metal liquid in the feed barrel, improves the product forming quality, and improves the product passing rate.
Smart Images
Figure CN222626155U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the technical field of die-casting equipment, in particular to a heat-insulating sleeve for a feed barrel of an extrusion casting machine. Background Art
[0002] Squeeze casting (liquid die forging) technology is currently widely used in defense, military, transportation, 3D forming, communication and mobile phone industries, and has become one of the important technologies in advanced manufacturing technology to achieve the formation of complex parts with less cutting. When an extrusion casting machine is producing aluminum alloy products, due to the requirements of the extrusion casting molding process, in order to avoid air entrainment during the entire injection process, the high-temperature metal liquid in the feed barrel is slowly pushed into the mold through the injection head to cool and form.
[0003] In actual production, due to the influence of ambient temperature, the temperature difference between high-temperature molten metal and ambient temperature is too large, and the molten metal cools too quickly during the injection molding process, causing the molten metal to solidify before it completely enters the mold cavity, resulting in various defects in product molding and low pass rate. Therefore, being able to prevent the molten metal temperature in the feeding barrel from cooling too quickly has always been an urgent problem that production process personnel need to solve. Utility Model Content
[0004] The purpose of the utility model is to overcome the above-mentioned defects in the prior art and provide a heat preservation cover for the feed barrel of an extrusion casting machine, which has a compact structure, is easy to install and maintain, occupies a small space, and can function in a limited space. At the same time, it can effectively keep the feed barrel warm, significantly reduce the cooling speed of the molten metal in the feed barrel, and solve the problem of product defects caused by the excessive cooling of the molten metal in the die-casting product manufacturing process.
[0005] In order to achieve the above-mentioned purpose, the utility model provides a heat-insulating sleeve for a feed barrel of an extrusion casting machine, comprising:
[0006] A bushing body, wherein a through hole is provided on the bushing body, a first annular rib is provided on one end of the outer wall of the bushing body, a second annular rib is provided on the other end of the bushing body away from the first annular rib, at least two groups of oil-passing annular ribs are provided between the first annular rib and the second annular rib, the first annular rib and the oil-passing annular rib adjacent to the first annular rib form an oil-passing annular groove, the two adjacent oil-passing annular ribs form an oil-passing annular groove, an oil-outlet annular groove is formed between the second annular rib and the oil-passing annular rib adjacent to the second annular rib, the oil-inlet annular groove, the oil-passing annular groove and the oil-outlet annular groove are connected in sequence, the oil-inlet annular groove is connected to an oil-inlet pipe connection port, and the oil-outlet annular groove is connected to an oil-outlet pipe connection port;
[0007] An outer sleeve is sealingly sleeved on the outside of the bushing body and completely covers the oil inlet ring groove, the oil passing ring groove and the oil outlet ring groove.
[0008] Furthermore, it also includes a fixing flange fixed to the lower end of the outer sheath, the oil inlet pipe connection port and the oil outlet pipe connection port are both arranged on the fixing flange, and the fixing flange is provided with a plurality of groups of evenly arranged screw holes. The fixing flange can be more convenient for installation and disassembly, and can improve the overall sealing performance to prevent the thermal oil from overflowing.
[0009] Furthermore, a first vertical baffle is further included, and both ends of the first vertical baffle are respectively fixedly connected to the first annular rib and the second annular rib, and the first vertical baffle separates the area between the first annular rib and the second annular rib. The first vertical baffle can separate the oil-passing area formed by the first annular rib and the second annular rib, and then cooperate with the oil-passing annular rib to form a specific oil-conducting flow direction, so that the heat-conducting oil can conduct heat to the bushing body more evenly, with better effect.
[0010] Furthermore, one end of the oil-passing annular rib is connected to one side of the first vertical baffle, and the other end of the oil-passing annular rib forms an annular groove oil-passing port with the other side of the first vertical baffle, so that the oil-passing annular rib and the first vertical baffle form a structure with one end closed and the other end open, which can form a fixed flow direction, making the flow of the heat transfer oil more reasonable.
[0011] Furthermore, the annular groove oil-passing ports formed by the two adjacent groups of oil-passing annular ribs and the first vertical baffle are respectively arranged on both sides of the first vertical baffle, so as to achieve end-to-end communication of adjacent oil-passing annular grooves.
[0012] Furthermore, it also includes a second vertical baffle plate, an oil inlet groove formed between the first vertical baffle plate and the second vertical baffle plate, and the oil inlet groove is respectively connected to the oil inlet ring groove and the oil inlet pipe connecting port.
[0013] Furthermore, the oil inlet pipe connection port and the oil outlet pipe connection port are respectively placed on both sides of the first vertical baffle, so that the inlet and outlet of the heat transfer oil are separated, and a good heat transfer cycle can be formed.
[0014] Furthermore, the first annular rib, the oil-passing annular rib, the first vertical baffle, the second vertical plate and the second annular rib have the same height, so as to closely fit the outer sheath and reduce the risk of leakage of the heat transfer oil.
[0015] Furthermore, the oil inlet groove is a vertical groove body, and the oil inlet ring groove, oil passing ring groove and oil outlet ring groove are all adjacent to the oil inlet groove. They can be adjacent to each ring groove, and at the same time, the heat of the heat transfer oil that has just entered the oil inlet groove can be conducted to each ring groove, so that the temperature of the heat transfer oil entering the utility model can be uniform at each stage, thereby improving the quality of the product.
[0016] Furthermore, after the outer sheath is sleeved on the bushing body, the inner wall surface of the outer sheath is closely fitted with the outer surfaces of the first annular rib, the oil-passing annular rib, the first vertical baffle, the second vertical plate and the second annular rib, and the joint between the outer sheath and the bushing body is welded and fixed. This can avoid leakage of heat transfer oil and increase the effect of heat transfer.
[0017] Compared with the prior art, the utility model has the following advantages:
[0018] 1. The utility model has a simple and compact structure and occupies little space. When in use, it can be directly inserted into the feed barrel and then fixed on the extrusion casting machine through the fixing flange. If it needs to be disassembled, it can be taken out by loosening the fixing flange. The installation and disassembly are very simple and convenient.
[0019] 2. The utility model is provided with an oil inlet ring groove, an oil passing ring groove and an oil outlet ring groove, wherein the oil passing ring groove can be added according to demand, and a ring-shaped zigzag flow is formed by the cooperation of the above-mentioned multiple groups of groove bodies. Heat transfer oil flows in the above-mentioned ring groove to transfer the heat of the heat transfer oil to the bushing body, and the bushing body transfers the heat to the feed barrel, which can effectively ensure the uniform temperature of the entire feed barrel, thereby ensuring the temperature consistency of the molten metal in the feed barrel and improving product quality.
[0020] 3. In particular, the oil inlet groove is a vertical groove body and each annular groove is arranged closely together. The first vertical baffle plate and the second vertical baffle plate can ensure that each annular groove is close to and spaced from the oil inlet groove. The heat of the heat transfer oil with a higher temperature that has just entered can be transferred to other annular grooves in real time, so that the overall temperature can maintain uniform heat, making the overall thermal insulation effect better. BRIEF DESCRIPTION OF THE DRAWINGS
[0021] In order to more clearly illustrate the embodiments of the utility model or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are some embodiments of the utility model. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.
[0022] Figure 1 This is a schematic structural diagram of a heat preservation sleeve for a feed barrel of an extrusion casting machine provided in Example 1 of the utility model;
[0023] Figure 2 It is a cross-sectional view of the structure of the utility model;
[0024] Figure 3 yes Figure 1 A schematic diagram of a partial cross-sectional structure;
[0025] Figure 4 It is a structural schematic diagram of the bushing body of the utility model;
[0026] Figure 5 It is a schematic diagram of the flow direction of the heat transfer oil of the utility model;
[0027] Figure 6 is a schematic structural diagram of a bushing body of Embodiment 2;
[0028] Figure 7 It is a schematic diagram of the assembly of the utility model and the feeding barrel.
[0029] Included in the figure are:
[0030] 1. Bushing body; 11. Through hole; 12. First annular rib; 121. Oil inlet ring groove; 13. Second annular rib; 131. Oil outlet ring groove; 14. Oil-passing annular rib; 141. First oil-passing annular rib; 142. Second oil-passing annular rib; 143. First oil-passing annular groove; 144. First annular groove oil inlet; 145. First annular groove oil outlet; 146. Third oil-passing annular rib; 1461. Second oil-passing annular rib Groove; 1462, first ring groove oil port; 147, fourth oil ring rib; 1471, third oil ring groove; 1472, fourth oil ring groove; 1473, second ring groove oil port; 15, first vertical baffle; 151, oil inlet groove; 16, second vertical baffle; 2, outer sheath; 3, fixing flange; 31, oil inlet pipe connection port; 32, oil outlet pipe connection port; 33, screw hole; 4, feed barrel. DETAILED DESCRIPTION
[0031] The following will be combined with the drawings in this embodiment of the utility model to clearly and completely describe the technical solution in this embodiment of the utility model. Obviously, the described embodiment is one embodiment of the utility model, not all embodiments of the utility model. Based on this embodiment of the utility model, all other embodiments of the utility model obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.
[0032] It should be noted that all directional indications in the embodiments of the present invention (such as up, down, left, right, front, back...) are only used to explain the relative position relationship, movement status, etc. between the components under a certain specific posture (as shown in the accompanying drawings). If the specific posture changes, the directional indication will also change accordingly.
[0033] In addition, if there are descriptions involving "first", "second", etc. in the embodiments of the present invention, the descriptions of "first", "second", etc. are only used for descriptive purposes and cannot be understood as indicating or implying their relative importance or implicitly indicating the number of the indicated technical features.
[0034] Example 1
[0035] See also Figures 1 to 5 The embodiment of the utility model provides a heat preservation sleeve for a feed barrel of an extrusion casting machine, comprising:
[0036] like Figure 1-Figure 2 As shown, a bushing body 1 is provided with a through hole 11, a first annular rib 12 is provided at one end of the outer wall of the bushing body 1, a second annular rib 13 is provided at the other end of the bushing body 1 away from the first annular rib 12, at least two groups of oil-passing annular ribs 14 are provided between the first annular rib 12 and the second annular rib 13, in this embodiment, two groups of oil-passing annular ribs 14 are provided, namely a first oil-passing annular rib 141 and a second oil-passing annular rib 142, an oil inlet annular groove 121 is formed between the first annular rib 12 and the first oil-passing annular rib 141, a first oil-passing annular groove 143 is formed between the first oil-passing annular rib 141 and the second oil-passing annular rib 142, an oil outlet annular groove 131 is formed between the second annular rib 13 and the second oil-passing annular rib 142, in this embodiment, the first annular rib 12, the second annular rib 13, the first oil-passing annular rib 141 and the second oil-passing annular rib 142 are all flat annular ribs arranged laterally;
[0037] The oil inlet ring groove 121, the first oil passing ring groove 143 and the oil outlet ring groove 131 are connected in sequence. Specifically, the present embodiment further includes a first vertical baffle 15 and a second vertical baffle 16. The two ends of the first vertical baffle 15 are respectively fixedly connected to the first annular rib 12 and the second annular rib 13. In other preferred embodiments, the first vertical baffle 15 and the first annular rib 12 and the second annular rib 13 can be integrally formed. The first vertical baffle 15 and the second vertical baffle 16 The area between the first annular rib 12 and the second annular rib 13 is separated, and the lower end of the second vertical baffle 16 is connected to the second annular rib 13. An oil inlet groove 151 is formed between the first vertical baffle 15 and the second vertical baffle 16. The oil inlet groove 151 is a vertical groove body. The oil inlet groove 121, the first oil passing groove 143 and the oil outlet groove 131 are all adjacent to the oil inlet groove 151. The oil inlet groove 151 is respectively connected to the oil inlet groove 121 and the oil inlet pipe. The upper end of the second vertical baffle 16 is connected to one end of the first oil-passing annular rib 141, and the other end of the first oil-passing annular rib 141 is adjacent to the first vertical baffle 15 and forms a first annular groove oil inlet 144, and the first annular groove oil inlet 144 realizes the communication between the oil inlet annular groove 121 and the first oil-passing annular groove 143, and one end of the second oil-passing annular rib 142 is connected to the first vertical baffle 15, and the connection between the two is disposed at the first annular groove oil inlet Below the second oil-passing annular rib 142, the other end of the second vertical baffle 16 is adjacent to the second vertical baffle 16 and forms a first annular groove oil outlet 145. The first annular groove oil outlet 145 realizes the connection between the first oil-passing annular groove 143 and the oil outlet annular groove 131. The first annular groove oil outlet 145 and the first annular groove oil inlet 144 are respectively arranged on both sides of the oil inlet groove 151, and are separated by the first vertical baffle 15 and the second vertical baffle 16, so that the annular tortuous flow of the heat transfer oil can be realized.
[0038] The outer sleeve 2 is sealingly sleeved on the outside of the bushing body 1 and completely covers the oil inlet groove 151, the oil inlet ring groove 121, the first oil passing ring groove 143 and the oil outlet ring groove 131. In order to ensure the airtightness of the above-mentioned groove body, in this embodiment, the first annular rib 12, the first oil passing annular rib 141, the second oil passing annular rib 142, the first vertical baffle 15, the second vertical plate and the second annular rib 13 have the same height. After the outer sleeve 2 is sleeved on the bushing body 1, the inner wall surface of the outer sleeve 2 is tightly fitted with the outer surfaces of the first annular rib 12, the first oil passing annular rib 141, the second oil passing annular rib 142, the first vertical baffle 15, the second vertical plate and the second annular rib 13, and the joint between the outer sleeve 2 and the bushing body 1 is welded and fixed.
[0039] The lower end of the outer sheath 2 shown in this embodiment is fixedly connected to a fixed flange 3, and an oil inlet pipe connection port 31 and an oil outlet pipe connection port 32 are arranged on the fixed flange 3. The positions of the oil inlet pipe connection port 31 and the oil outlet pipe connection port 32 correspond to the oil inlet groove 151 and the oil outlet ring groove 131. Figure 3 As shown, the oil inlet pipe connection port 31 and the oil outlet pipe connection port 32 are distributed at the projection positions on both sides of the first vertical baffle 15, the oil inlet pipe connection port 31 is connected to the oil inlet groove 151, and the oil outlet pipe connection port 32 is connected to the oil outlet ring groove 131; in order to facilitate the installation of the fixed flange 3, a plurality of groups of evenly arranged screw holes 33 are provided on the fixed flange 3.
[0040] Briefly describe the working principle of this utility model: Figure 6 As shown, before use, the bushing body 1 is first sleeved on the feed barrel 4 so that the inner wall of the bushing body 1 fits tightly with the outer wall of the feed barrel 4, and then fixed by screws and fixing flanges, and then connected to the mold temperature controller through the oil inlet pipe connection port 31, and then the heat transfer oil is heated by the mold temperature controller. The mold temperature controller is a commonly used equipment in the industry and does not require specific restrictions. Then the heat transfer oil flows into the oil inlet groove 151 through the oil inlet pipe connection port 31, and then flows into the oil inlet transverse groove along the oil inlet groove 151. The heat transfer oil flows along the direction of the oil inlet transverse groove until it reaches the first ring groove oil inlet port 144, and the heat transfer oil flows into the first oil ring groove 143 through the first ring groove oil inlet port 144, and finally flows into the oil outlet ring groove 131 through the first ring groove oil outlet port 145, and finally flows out from the oil outlet pipe connection port 32 at the other end of the oil outlet ring groove 131 back to the mold temperature controller. The high-temperature heat-conducting oil increases the temperature of the bushing body 1. When the bushing body 1 is assembled, it needs to be fitted onto the outer wall of the feed barrel. In this way, the temperature of the feed barrel will also increase, and the temperature difference between the molten metal and the feed barrel will decrease, which can effectively slow down the cooling rate of the molten metal in the feed barrel, thereby meeting the requirements of the extrusion casting process, reducing the casting defects of the product, and improving the product production efficiency.
[0041] Example 2
[0042] The difference between this embodiment and embodiment 1 is that Figure 7As shown, in the present embodiment, four groups of oil-passing annular ribs 14 are provided, and the four groups of oil-passing annular ribs 14 are respectively a first oil-passing annular rib 141, a second oil-passing annular rib 142, a third oil-passing annular rib 146 and a fourth oil-passing annular rib 147; the first annular rib 12 forms an oil inlet annular groove 121 with the first oil-passing annular rib 141, an oil outlet annular groove 131 is formed between the second annular rib 13 and the second oil-passing annular rib 142, a second oil-passing annular groove 1461 is formed between the first oil-passing annular rib 141 and the third oil-passing annular rib 146, a third oil-passing annular groove 1471 is formed between the third oil-passing annular rib 146 and the fourth oil-passing annular rib 147, and a fourth oil-passing annular groove 1472 is formed between the fourth oil-passing annular rib 147 and the second oil-passing annular rib 142; one end of the third oil-passing annular rib 146 is connected to the first vertical baffle plate 15, and the other end thereof is connected to the The second vertical baffle plate 16 is adjacent to each other and forms a first annular groove oil passage opening 1462, and the first annular groove oil passage opening 1462 realizes the connection between the second oil passage annular groove 1461 and the third oil passage annular groove 1471; one end of the fourth oil passage annular rib 147 is connected to the second vertical baffle plate 16, and the other end thereof is adjacent to the first vertical baffle plate 15 and forms a second annular groove oil passage opening 1473, and the second annular groove oil passage opening 1473 realizes the connection between the third oil passage annular groove 1471 and the fourth oil passage annular groove 1472, the first annular groove oil passage opening 1462 and the second annular groove oil passage opening 1473 are respectively arranged on both sides of the first vertical baffle plate 15, and the first annular groove oil passage opening 1462 and the second annular groove oil passage opening 1473 realize the sequential end-to-end connection between the second oil passage annular groove 1461, the third oil passage annular groove 1471, and the fourth oil passage annular groove 1472; the rest are the same as in Example 1, and the effect of Example 1 is achieved at the same time.
[0043] The above are only preferred embodiments of the present invention and are not intended to limit the present invention. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included in the protection scope of the present invention.
Claims
1. A heat preservation sleeve for a feed barrel of an extrusion casting machine, characterized in that: include: A bushing body (1), wherein the bushing body (1) is provided with a through hole (11), a first annular rib (12) is provided at one end of an outer wall surface of the bushing body (1), a second annular rib (13) is provided at the other end of the bushing body (1) away from the first annular rib (12), at least two groups of oil-passing annular ribs (14) are provided between the first annular rib (12) and the second annular rib (13), the first annular rib (12) and the oil-passing annular rib (14) adjacent to the first annular rib (12) form An oil inlet ring groove (121), wherein the two adjacent oil passing ring ribs (14) form an oil passing ring groove, an oil outlet ring groove (131) is formed between the second ring rib (13) and the oil passing ring rib (14) adjacent to the second ring rib (13), the oil inlet ring groove (121), the oil passing ring groove and the oil outlet ring groove (131) are sequentially connected, the oil inlet ring groove (121) is connected to an oil inlet pipe connection port (31), and the oil outlet ring groove (131) is connected to an oil outlet pipe connection port (32); An outer sleeve (2), the outer sleeve (2) is sealingly sleeved on the outside of the bushing body (1) and completely covers the oil inlet ring groove (121), the oil passing ring groove and the oil outlet ring groove (131).
2. The heat preservation cover of the feed barrel of the squeeze casting machine according to claim 1, characterized in that: It also includes a fixed flange (3) fixedly connected to the lower end of the outer jacket (2), the oil inlet pipe connection port (31) and the oil outlet pipe connection port (32) are both arranged on the fixed flange (3), and the fixed flange (3) is provided with a plurality of groups of evenly arranged screw holes (33).
3. The heat preservation cover of the feed barrel of the extrusion casting machine according to claim 2, characterized in that: It also includes a first vertical baffle (15), the two ends of which are respectively fixedly connected to the first annular rib (12) and the second annular rib (13), and the first vertical baffle (15) separates the area between the first annular rib (12) and the second annular rib (13).
4. The heat preservation cover of the feed barrel of the squeeze casting machine according to claim 3, characterized in that: One end of the oil-passing annular rib (14) is connected to one side of the first vertical baffle (15), and the other end of the oil-passing annular rib (14) and the other side of the first vertical baffle (15) form an annular groove oil-passing port.
5. The heat preservation cover of the feed barrel of the squeeze casting machine according to claim 4, characterized in that: The annular groove oil-passing openings formed by the two adjacent groups of oil-passing annular ribs (14) and the first vertical baffle (15) are respectively arranged on both sides of the first vertical baffle (15), so as to achieve end-to-end communication of adjacent oil-passing annular grooves.
6. The heat preservation cover of the feed barrel of the extrusion casting machine according to claim 5, characterized in that: It also includes a second vertical baffle (16), an oil inlet groove (151) formed between the first vertical baffle (15) and the second vertical baffle (16), and the oil inlet groove (151) is respectively connected to the oil inlet ring groove (121) and the oil inlet pipe connecting port (31).
7. The heat preservation cover of the feed barrel of the extrusion casting machine according to claim 3, characterized in that: The oil inlet pipe connection port (31) and the oil outlet pipe connection port (32) are respectively disposed on two sides of the first vertical baffle (15).
8. The heat preservation cover of the feed barrel of the extrusion casting machine according to claim 6, characterized in that: The first annular rib (12), the oil-passing annular rib (14), the first vertical baffle plate (15), the second vertical plate and the second annular rib (13) are all of the same height.
9. The heat preservation cover of the feed barrel of the extrusion casting machine according to claim 6, characterized in that: The oil inlet groove (151) is a vertical groove body, and the oil inlet ring groove (121), the oil passing ring groove and the oil outlet ring groove (131) are all closely adjacent to the oil inlet groove (151).
10. The heat preservation cover of the feed barrel of the squeeze casting machine according to claim 8, characterized in that: After the outer sleeve (2) is sleeved on the bushing body (1), the inner wall surface of the outer sleeve (2) is tightly fitted with the outer surfaces of the first annular rib (12), the oil-passing annular rib (14), the first vertical baffle plate (15), the second vertical plate and the second annular rib (13), and the joint between the outer sleeve (2) and the bushing body (1) is welded and fixed.