A connecting structure of a base and a bottom plate for repairing a refrigerator door liner negative pressure adsorption forming die

Abstract

The utility model relates to refrigerator door liner forming die technical field, concretely relates to a kind of base and bottom plate's connecting structure for refrigerator door liner negative pressure adsorption forming die maintenance, the die is equipped with circulating water circuit interface and compressed air circuit interface;Water-gas shunting base is fixedly installed on bottom plate, multiple water pass-through connector and air pass-through connector are equipped on water-gas shunting base, respectively correspond the circulating water circuit interface and compressed air circuit interface of die and with its plug-in cooperation cooperation. Through the collaborative design of air path connection component and line sealing component, air path connection on bottom plate does not need to be disassembled, air pipe is completely avoided to be damaged by pulling and pulling;When removing mould, line plug-in connector does not need to be disconnected, bottom plate can be directly separated from base, avoid line to be pulled off risk, solve the technical problems that existing mould base and bottom plate connecting structure air path line are easily damaged and remove mould maintenance complicated.

Description

Technical Field

[0001] This utility model relates to the field of refrigerator door liner molding technology, specifically to a connection structure of a base and bottom plate for repairing a refrigerator door liner negative pressure adsorption molding mold. Background Technology

[0002] The negative pressure adsorption molding die for refrigerator door liners is the core equipment in refrigerator door liner production. Its structure includes a base, a base plate, a die body, a water and air distribution block, and multiple drive cylinders. It requires four-way circulating water and four-way compressed air to achieve functions such as die heating and demolding. Among them, the cylinders for the outer copper strip of the door seal groove and the cylinder for the bottom center ejection mechanism of the door seal groove are fixed to the base plate, while the cylinders for the die core pulling mechanism and the cylinder for the inner copper strip flipping mechanism of the door seal groove are fixed to the base. Some cylinders are also equipped with magnetic switches to provide feedback on the working status.

[0003] In existing refrigerator door liner negative pressure adsorption molding molds, the air circuits are generally connected in a decentralized manner. The air circuit connectors on the base plate and the base are often directly exposed on the side wall. During maintenance and mold disassembly, the base must be lifted first before disassembling the internal air pipes, which is cumbersome and prone to accidental breakage. Furthermore, the magnetic switch circuitry is poorly designed; the circuitry typically needs to be led out through threaded holes on the base side wall and connected via plug-in connectors, making it prone to breakage during mold disassembly, significantly increasing maintenance costs and downtime. Therefore, we propose a connection structure between the base and base plate for the maintenance of refrigerator door liner negative pressure adsorption molding molds. Utility Model Content

[0004] To address the aforementioned issues, a connection structure for the base and bottom plate of a refrigerator door liner negative pressure adsorption molding mold is provided. Through the coordinated design of the air circuit connection component and the line sealing component, the air circuit connection on the bottom plate does not need to be disassembled, completely avoiding damage from the air pipe being pulled. When disassembling the mold, there is no need to disconnect the line connector; the base and bottom plate can be directly separated, avoiding the risk of line breakage. This solves the technical problems of easy damage to the air circuit and cumbersome disassembly and maintenance in the existing mold base and bottom plate connection structure.

[0005] To address the existing technical problems, this utility model provides a connection structure for a base and base plate for repairing a refrigerator door liner negative pressure adsorption molding mold. The mold includes a base, a base plate, a first cylinder, and a second cylinder. The base is fixedly installed on the upper side of the base plate, and the first and second cylinders are fixedly installed between the base and the base plate. The first and second cylinders respectively have an air inlet and an air outlet. The mold is provided with a circulating water circuit interface and a compressed air circuit interface. The base plate includes a water-air diversion base, an air circuit connection component, a circuit sealing component, and a sealing positioning component. The water-air diversion base is fixedly installed on the base plate. The water-air diversion base is provided with multiple water inlet and air inlet connectors, which correspond to the circulating water circuit interface and compressed air circuit interface of the mold, respectively, and are plugged into and cooperate with them. The air circuit connection assembly is set on the base plate to realize the quick connection and disconnection of the air circuit between the cylinder and the water-air diversion base. The circuit sealing assembly is set on the base plate for sealing protection and non-disassembly installation of the cylinder magnetic switch circuit. The sealing positioning assembly is set between the base and the base plate for sealing and positioning guidance when the base and the base plate are connected.

[0006] Preferably, the air connection assembly includes a deep hole, a quick-connect air hose connector, and a screw plug; the deep hole is formed at one end of the base plate near the water-air distribution base, the deep hole extends along the length of the base plate and penetrates into the area of ​​the base plate near the base, and the deep hole has a port, a first end, and a second end; the quick-connect air hose connector includes a first connector and a second connector, the first connector is fixed to the first end of the deep hole and connected to the air inlet of the water-air distribution base through an air hose; the second connector is fixed to the second end of the deep hole and connected to the air inlet and outlet of the cylinder through an air hose; the screw plug is fixed at the hole position of the base plate port for sealing the port of the deep hole.

[0007] Preferably, there are a plurality of deep holes, and two adjacent deep holes are grouped together. The number of deep holes corresponds to the number of intake circuits and the number of return circuits of the first cylinder and the second cylinder, respectively.

[0008] Preferably, the circuit sealing assembly includes a crescent-shaped mounting block, a sealing cable connector, and a sealing groove; the base plate has a recessed platform, the crescent-shaped mounting block is fixed on the recessed platform, the crescent-shaped mounting block has two through holes, and the base has a crescent-shaped recess adapted to the crescent-shaped mounting block; the sealing cable connector is fixed in the through holes, and the water-air diversion base has magnetic switch signal connectors fixedly installed at symmetrical positions of the water connector and the air connector; the water-air diversion base, the first cylinder, and the second cylinder are respectively fixedly installed with magnetic switch circuits, and the sealing cable connector is used for the sealing of the magnetic switch circuits; the sealing groove is opened in the crescent-shaped recess, and a sealing strip is provided in the sealing groove.

[0009] Preferably, the two through holes are used for the magnetic switch circuits of the first cylinder and the second cylinder, respectively. The magnetic switch circuits are sequentially inserted into the two sealed cable connectors and connected to the magnetic switch signal connector of the water-air diversion base.

[0010] Preferably, the sealing and positioning assembly includes a positioning pin and a positioning hole; the positioning pin is disposed on the side of the base plate facing the base, and the positioning hole is opened on the side of the base facing the base plate, and the positioning pin and the positioning hole are inserted into each other; multiple positioning pins and positioning holes are provided, and they are evenly distributed circumferentially along the mating surface of the base and the base plate.

[0011] Preferably, a sealing gasket is provided at the connection between the deep hole and the quick-connect air tube connector to prevent air leakage.

[0012] The advantages of this utility model compared to the prior art are:

[0013] 1. Through the integrated design of the air circuit connection component, the air circuit of the cylinder is integrated into the deep hole of the base plate. With the quick-connect air pipe connector, the air circuit can be quickly connected. When disassembling the mold, only a few air pipes related to the first and second cylinders on the outside of the base need to be disconnected. There is no need to disassemble the air circuit connection on the base plate, which completely avoids the damage caused by the pulling of air pipes. This solves the problem of the dispersed and easily damaged air circuit of the existing mold, and greatly simplifies the maintenance and disassembly process.

[0014] 2. By combining the crescent-shaped mounting block with the sealed cable connector, the magnetic switch circuit can be installed without disassembly and with sealed protection. When disassembling the mold, there is no need to disconnect the circuit connector; the base and the bottom plate can be separated directly, avoiding the risk of the circuit being pulled apart. At the same time, the matching design of the sealing strip and the crescent-shaped structure ensures the sealing reliability of the circuit passage and prevents water vapor from entering and affecting the electrical performance.

[0015] 3. The positioning pins and positioning holes work together to achieve precise docking between the base and the bottom plate, avoiding the squeezing of pipelines when the mold is closed; the sealing gaskets at the connection between the deep hole and the quick connector and the sealing strips at the wiring passages work together to ensure the overall sealing performance of the mold, prevent water and air leakage in the air circuit, improve the stability of equipment operation, and reduce maintenance costs and downtime. Attached Figure Description

[0016] Figure 1 This is a three-dimensional schematic diagram of the connection structure between the base and the bottom plate for repairing a refrigerator door liner negative pressure adsorption molding mold, according to this utility model. Figure 1 .

[0017] Figure 2 This is a three-dimensional schematic diagram of the connection structure between the base and the bottom plate for repairing a refrigerator door liner negative pressure adsorption molding mold, according to this utility model. Figure 2 .

[0018] Figure 3This is a three-dimensional schematic diagram of the connection structure between the base and the bottom plate for repairing a refrigerator door liner negative pressure adsorption molding mold, according to this utility model. Figure 3 .

[0019] Figure 4 This is a three-dimensional schematic diagram of the base and base plate of the refrigerator door liner negative pressure adsorption molding mold repair base and base plate connection structure.

[0020] Figure 5 yes Figure 1 Enlarged diagram of point A in the middle.

[0021] Figure 6 yes Figure 4 Enlarged diagram of point B in the middle.

[0022] The following are the labels in the diagram: 1. Base; 11. Base plate; 12. First cylinder; 13. Second cylinder; 2. Water-air splitter base; 21. Deep hole; 22. Quick-connect air pipe connector; 23. Plug; 24. Crescent-shaped mounting block; 241. Recessed platform; 25. Sealed cable connector; 26. Sealing groove; 27. Positioning pin; 28. Positioning hole. Detailed Implementation

[0023] To further understand the features, technical means, and specific objectives and functions achieved by this utility model, the following detailed description of this utility model is provided in conjunction with the accompanying drawings and specific embodiments.

[0024] See Figures 1 to 4As shown, a connection structure for a base and base plate for repairing a refrigerator door liner negative pressure adsorption molding mold is disclosed. The mold includes a base 1, a base plate 11, a first cylinder 12, and a second cylinder 13. The mold is provided with a circulating water circuit interface and a compressed air circuit interface. The base 1 is fixedly installed on the upper side of the base plate 11. The first cylinder 12 and the second cylinder 13 are fixedly installed between the base 1 and the base plate 11. The first cylinder 12 and the second cylinder 13 respectively have an air inlet and an air outlet. The base plate 11 includes a water-air diversion base 2, an air circuit connection assembly, and wiring. The system includes a sealing assembly and a sealing positioning assembly. The water-air diversion base 2 is fixedly mounted on the base plate 11. The water-air diversion base 2 has multiple water and air connectors, corresponding to the circulating water circuit interface and compressed air circuit interface of the mold, respectively, and is plugged into them. The air circuit connection assembly is located on the base plate 11, used to achieve quick connection and disconnection of the air circuit between the cylinder and the water-air diversion base 2. The circuit sealing assembly is located on the base plate 11, used for sealing and protecting the cylinder's magnetic switch circuit and allowing for easy installation without disassembly. The sealing positioning assembly is located on the base 1 and... Between the base plates 11, a sealing and positioning guide is provided when the base 1 and the base plate 11 are mated; the air connection assembly includes a deep hole 21, a quick-connect air hose connector 22, and a screw plug 23; the deep hole 21 is opened at one end of the base plate 11 near the water-air diversion base 2, the deep hole 21 extends along the length of the base plate 11 and penetrates into the area of ​​the base plate 11 near the base 1, the deep hole 21 has a port, a first end, and a second end; the quick-connect air hose connector 22 includes a first connector and a second connector, the first connector is fixed to the first end of the deep hole 21 and is connected to the water-air diversion base 2. The first air inlet is connected via an air pipe; the second inlet is fixed to the second end of the deep hole 21 and connected to the air inlet and outlet of the cylinder via an air pipe; the screw plug 23 is fixed at the hole at the port of the base plate 11 to seal the port of the deep hole 21; there are several deep holes 21, and two adjacent deep holes 21 form a group; the number of deep holes 21 corresponds to the number of air inlet circuits and the number of air outlet circuits of the first cylinder 12 and the second cylinder 13, respectively; a sealing gasket is provided at the connection between the deep hole 21 and the quick-connect air pipe connector 22 to prevent air leakage.

[0025] Specifically, the first cylinder 12 is the outer copper strip cylinder for the door sealing groove, used to provide power for demolding the outer copper strip of the door sealing groove. The second cylinder 13 is the ejection mechanism cylinder at the bottom center of the door sealing groove, used to drive the ejection mechanism to achieve the mold demolding action. The two have clear division of labor and are adapted to the functional requirements of rapid mold demolding. The second cylinder 13 is fixed to the base plate 11 with screws. The ejection mechanism of the second cylinder 13 is installed on the mold. The second cylinder 13 is not connected to the ejection mechanism. When the piston rod of the second cylinder 13 extends, the ejection mechanism rises and the mold demolds. When the piston rod retracts, the ejection mechanism descends under its own weight. The first cylinder 12 is fixed to the base plate 11 with screws. The core-pulling mechanism and the inward copper strip turning mechanism of the first cylinder 12 are installed on the mold. The first cylinder 12 is not connected to the core-pulling mechanism and the inward copper strip turning mechanism.

[0026] The vacuum forming equipment provides four circulating water channels and four compressed air channels for the mold. The four circulating water channels correspond to the mold, the inner rib, the copper strip, and the base 1, respectively. The four compressed air channels correspond to the mold core-pulling cylinder, the copper strip cylinder in the door sealing groove, the first cylinder 12, and the second cylinder 13, respectively.

[0027] The air vent on the water-air distribution base 2 is connected to the first connector of the quick-connect air pipe connector 22 via an air pipe. The second connector of the quick-connect air pipe connector 22 is connected to the air inlet and outlet of the first cylinder 12 and the second cylinder 13 respectively via an air pipe, forming a complete and independent air circulation path to ensure the precise and controllable action of each cylinder. The deep hole 21 adopts an integrated design, which hides the air path inside the base plate 11. On the one hand, it avoids the air path from being exposed to the outside and being squeezed, pulled or corroded by dust. On the other hand, it reduces the external space occupied by the air path and optimizes the overall layout of the mold. The sealing gasket at the connection between the deep hole 21 and the quick-connect air pipe connector 22, together with the screw plug 23 at the port hole of the base plate 11, forms a double sealing structure, which effectively prevents air path leakage, ensures the stability of the mold working pressure, and avoids the demolding effect due to pressure fluctuations.

[0028] When the mold needs to be repaired and disassembled, it is only necessary to disconnect the air pipes of the water-air distribution base 2 and the mold's circulating water circuit interface and compressed air circuit interface, as well as the air pipes connecting the first connector of the quick-connect air pipe connector 22 to the relevant components of the external air supply equipment. There is no need to disassemble the air circuit connecting the second connector to the first cylinder 12 and the second cylinder 13. The base 1 can be directly separated from the base plate 11, thereby solving the problem of pipeline breakage and damage caused by disassembling the internal air pipes during the mold disassembly process, simplifying the mold disassembly process, shortening the maintenance time, and reducing equipment maintenance costs.

[0029] See Figures 2 to 4 and Figure 6As shown, the line sealing assembly includes a crescent-shaped mounting block 24, a sealing cable connector 25, and a sealing groove 26; the base plate 11 has a recess 241, the crescent-shaped mounting block 24 is fixed on the recess 241, the crescent-shaped mounting block 24 has two through holes, and the base 1 has a crescent-shaped recess that matches the crescent-shaped mounting block 24; the sealing cable connector 25 is fixed in the through hole, and the water-air diversion base 2 has magnetic switch signal connectors fixedly installed at symmetrical positions of the water connector and the air connector. Cylinder 12 and Cylinder 13 are respectively fixedly installed with magnetic switch circuits. The sealed cable connector 25 is used for the sealed passage of the magnetic switch circuits. The sealing groove 26 is opened in the crescent-shaped recess and a sealing strip is provided in the sealing groove 26. The wire hole is used for the passage of the magnetic switch circuit of the water-gas diversion base 2, the passage of the magnetic switch circuit of the first cylinder 12, and the passage of the magnetic switch circuit of the second cylinder 13. The magnetic switch circuits are sequentially inserted into the two sealed cable connectors 25 and connected to the magnetic switch signal connector of the water-gas diversion base 2.

[0030] Specifically, after the magnetic switch circuits of the first cylinder 12, the second cylinder 13, and the water-air diversion base 2 are led out, they pass through the corresponding sealed cable connectors 25 and enter the interior of the base plate 11, ultimately connecting to the magnetic switch signal connector of the water-air diversion base 2. This ensures a neat circuit layout, reduces mutual entanglement and interference, and facilitates later inspection and maintenance. The sealed cable connectors 25 and the sealing strip in the crescent-shaped recess form a double sealing structure, which can effectively isolate water vapor, dust, and other impurities in the mold working environment from intruding into the circuit passage, avoiding electrical short circuits or abnormal signal transmission, and ensuring the accuracy and stability of the magnetic switch signal feedback.

[0031] The crescent-shaped mounting block 24 and the crescent-shaped recess of the base 1 are fitted with a clearance, which provides ample space for the relative separation of the base 1 and the base plate 11. On the other hand, it prevents the wires from being pulled hard when they move synchronously with the base 1. The base 1 and the base plate 11 can be quickly separated without additional disassembly of the plug-in connector, completely eliminating the problem of breakage and damage caused by wires being dragged during the demolding process, further simplifying the maintenance process and improving work efficiency.

[0032] See Figure 1 , Figures 2 to 4 As shown, the sealing and positioning assembly includes a positioning pin 27 and a positioning hole 28; the positioning pin 27 is disposed on the side of the base plate 11 facing the base 1, and the positioning hole 28 is opened on the side of the base 1 facing the base plate 11, and the positioning pin 27 and the positioning hole 28 are inserted into each other; multiple positioning pins 27 and positioning holes 28 are provided, and they are evenly distributed circumferentially along the mating surface of the base 1 and the base plate 11.

[0033] Specifically, during the docking process between the base 1 and the base plate 11, the positioning pin 27 on the base plate 11 and the positioning hole 28 on the base 1 form a precise insertion fit, which can quickly calibrate the relative position of the base 1 and the base plate 11, realize the efficient alignment and assembly of the two, and significantly shorten the mold closing time. On the other hand, the positioning structure restricts the lateral displacement of the two, avoiding the squeezing and bending of pipelines due to misalignment during mold closing, ensuring the integrity of the air circuit and the reliability of the connection, preventing air circuit leakage, short circuit and other faults caused by pipeline damage, and further improving the stability of mold operation.

[0034] Working Principle: During normal operation, the water-air distribution base 2 provides circulating water to the mold through the water connector and compressed air to the first cylinder 12 and the second cylinder 13 through the air connector and air circuit connection assembly. The magnetic switch circuit transmits signals through the circuit sealing assembly, and the sealing positioning assembly ensures a sealed connection between the base 1 and the base plate 11. When the mold needs maintenance, first disconnect the water pipe on the water-air distribution base 2 and the relevant air pipes outside the base 1, then remove the screws connecting the base 1 and the base plate 11. Guided by the positioning pin 27, the base 1 is directly separated from the base plate 11. At this time, the air circuits of the first cylinder 12 and the second cylinder 13 on the base plate 11 in the air circuit connection assembly remain connected, and the magnetic switch circuit in the circuit sealing assembly does not need to be disconnected to avoid damage to the pipelines. After maintenance, the precise connection between the base 1 and the base plate 11 is achieved through the cooperation of the positioning pin 27 and the positioning hole 28. After tightening the screws, the water pipe and air pipe are reconnected to restore the mold operation.

[0035] The above embodiments only illustrate one or more implementations of this utility model, and their descriptions are relatively specific and detailed, but they should not be construed as limiting the scope of this utility model. It should be noted that those skilled in the art can make various modifications and improvements without departing from the concept of this utility model, and these all fall within the protection scope of this utility model. Therefore, the protection scope of this utility model should be determined by the appended claims.

Claims

1. A connection structure for a base and base plate for repairing a refrigerator door liner negative pressure adsorption molding mold, the mold comprising a base (1), a base plate (11), a first cylinder (12), and a second cylinder (13), the mold having a circulating water circuit interface and a compressed air circuit interface, the base (1) being fixedly installed on the upper side of the base plate (11), the first cylinder (12) and the second cylinder (13) being fixedly installed between the base (1) and the base plate (11), the first cylinder (12) and the second cylinder (13) respectively having an air inlet and an air outlet, characterized in that, The base plate (11) includes a water-air diversion base (2), an air path connection assembly, a line sealing assembly, and a sealing positioning assembly; The water-air diversion base (2) is fixedly installed on the base plate (11). The water-air diversion base (2) is provided with multiple water connectors and air connectors, which correspond to the circulating water circuit interface and compressed air circuit interface of the mold respectively and are plugged into it. The air circuit connection assembly is set on the base plate (11) to realize the quick connection and disconnection of the air circuit between the cylinder and the water-air split base (2); The circuit sealing assembly is set on the base plate (11) for sealing protection and non-disassembly installation of the cylinder magnetic switch circuit; The sealing and positioning component is disposed between the base (1) and the bottom plate (11) for sealing and positioning guidance when the base (1) and the bottom plate (11) are connected.

2. The connection structure of the base and bottom plate for repairing a refrigerator door liner negative pressure adsorption molding mold according to claim 1, characterized in that, The air passage connection assembly includes a deep hole (21), a quick-connect air tube connector (22), and a screw plug (23); The deep hole (21) is opened at one end of the base plate (11) near the water-air distribution base (2). The deep hole (21) extends along the length of the base plate (11) and penetrates into the area of ​​the base plate (11) near the base (1). The deep hole (21) has a port, a first end and a second end. The quick-connect tracheal connector (22) includes a first connector and a second connector. The first connector is fixed to the first end of the deep hole (21) and connected to the air inlet of the water-air diversion base (2) through a tracheal tube. The second connector is fixed to the second end of the deep hole (21) and connected to the air inlet and outlet of the cylinder through an air pipe; The screw plug (23) is fixed at the hole position at the port of the base plate (11) to seal the port of the deep hole (21).

3. The connection structure of the base and bottom plate for repairing a refrigerator door liner negative pressure adsorption molding mold according to claim 2, characterized in that, The deep holes (21) are provided in a plurality of them. Two adjacent deep holes (21) form a group. The number of deep holes (21) corresponds to the number of air intake circuits and the number of air return circuits of the first cylinder (12) and the second cylinder (13), respectively.

4. The connection structure of the base and bottom plate for repairing a refrigerator door liner negative pressure adsorption molding mold according to claim 1, characterized in that, The line sealing assembly includes a crescent-shaped mounting block (24), a sealed cable connector (25), and a sealing groove (26). The base plate (11) is provided with a recess (241), the crescent-shaped mounting block (24) is fixed on the recess (241), the crescent-shaped mounting block (24) has two wire holes, and the base (1) is provided with a crescent-shaped recess that matches the crescent-shaped mounting block (24). The sealed cable connector (25) is fixed inside the wire hole. The water-air diversion base (2) has magnetic switch signal connectors fixedly installed at the symmetrical parts of the water connector and the air connector. The water-air diversion base (2), the first cylinder (12) and the second cylinder (13) are respectively fixedly installed with magnetic switch circuits. The sealed cable connector (25) is used for the sealed installation of the magnetic switch circuits. The sealing groove (26) is formed in a crescent-shaped recess, and a sealing strip is provided in the sealing groove (26).

5. The connection structure of the base and bottom plate for repairing a refrigerator door liner negative pressure adsorption molding mold according to claim 4, characterized in that, The two wire holes are used for the magnetic switch circuits of the first cylinder (12) and the second cylinder (13), respectively. The magnetic switch circuits are sequentially plugged into the two sealed cable connectors (25) and connected to the magnetic switch signal connector of the water-air diversion base (2).

6. The connection structure of the base and bottom plate for repairing a refrigerator door liner negative pressure adsorption molding mold according to claim 1, characterized in that, The sealing and positioning assembly includes a positioning pin (27) and a positioning hole (28). The positioning pin (27) is located on the side of the base plate (11) facing the base (1), and the positioning hole (28) is located on the side of the base (1) facing the base plate (11). The positioning pin (27) and the positioning hole (28) are inserted into each other. The positioning pins (27) and positioning holes (28) are provided in multiples and are evenly distributed circumferentially along the mating surface of the base (1) and the bottom plate (11).

7. The connection structure of the base and bottom plate for repairing a refrigerator door liner negative pressure adsorption molding mold according to claim 2, characterized in that, A sealing gasket is provided at the connection between the deep hole (21) and the quick-connect air pipe connector (22) to prevent air leakage.

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