Mold for cross-pile material connection

Abstract

The utility model discloses a mould for cross air column material connection, including upper die and the lower die of being located in die holder, the lower die is equipped with the outer periphery mould surface of one end inflation big of air column tubular material, the upper die is equipped with the inner periphery mould surface of free end diameter gradually big, the diameter of upper die is greater than the diameter of cross air column material, when the die, the upper die sleeve of lower die outer periphery makes the outer periphery mould surface and inner periphery mould surface matching clamping the material of superposition carry out welding, and the diameter of this outer periphery mould surface is from the free end less than the diameter of air column tubular material gradually big to greater than the diameter of air column tubular material. The utility model die enlargates the pipe diameter of the tubular material end of air column and forms the inclined plane outer expansion, makes the end of tubular material and the connecting hole outer periphery material superposition of the sheet material of the air column to be connected, welds again to the superposition part, and the operation is quick and efficient, and the welding area is even and beautiful and does not leak.

Description

Technical Field

[0001] This utility model relates to a mold for connecting cross-shaped air columns, belonging to the field of inflatable tent production technology. Background Technology

[0002] Inflatable tents are typically constructed from multiple air columns connected to form the tent frame, and are popular for outdoor use due to their ease of storage and use. However, due to the structural characteristics of inflatable tents, the connection between the air columns involves connecting the ends of the air columns to each other, as well as connecting the ends to the middle of the air columns. For the connection between the ends and the middle of the air columns, current technology often uses manual operation. To improve the strength and airtightness of the connection, and to reduce the instability of manual operation, additional auxiliary connection structures are used to connect the ends and the middle of the air columns, thereby increasing the connection strength and reducing the difficulty of the connection process. However, these additional auxiliary connection structures inevitably increase product costs, and connecting the auxiliary connection structure to the two air column tubes to be connected adds to the production process. Utility Model Content

[0003] The purpose of this invention is to overcome the shortcomings of the prior art and provide a cross-air column material connection mold that can directly and quickly connect the end of the air column tube to the middle of the air column tube.

[0004] This utility model is achieved through the following technical solution:

[0005] A mold for connecting cross-air column materials is characterized by comprising an upper mold and a lower mold disposed on a mold base. The lower mold is provided with an outer peripheral mold surface capable of expanding one end of the tubular air column material. The upper mold is provided with an inner peripheral mold surface with a gradually increasing diameter at the free end. The diameter of the upper mold is larger than the diameter of the cross-air column material. When the mold is closed, the upper mold is sleeved on the outer periphery of the lower mold so that the outer peripheral mold surface matches the inner peripheral mold surface to clamp and weld the superimposed material.

[0006] The mold for connecting cross-air column materials as described above is characterized in that the diameter of the outer peripheral mold surface gradually increases from being smaller than the diameter of the air column tubular material at the free end to being larger than the diameter of the air column tubular material.

[0007] The mold for connecting cross-air column materials as described above is characterized in that the lower mold includes multiple movable modules. After the multiple modules move outward, the outer peripheral walls of the multiple modules form an outer peripheral mold surface that matches the inner peripheral mold surface. The upper diameter of the outer peripheral mold surface is the same as the inner diameter of the air column, and the lower diameter gradually increases to form a tapered welding part.

[0008] The cross-air column material connection mold as described above is characterized in that the plurality of modules include a central mold and at least two side molds disposed outside the central mold, wherein the central mold is provided with an extrusion inclined surface that pushes the side molds outward and an outer end wall that, after pushing, docks with the outer wall of the side mold to form a complete outer periphery.

[0009] The cross-air column material connection mold as described above is characterized in that the central mold moves up and down between the mold base and the upper mold, and the central mold forms an extrusion slope that is smaller at the top and larger at the bottom and connects with the multiple side molds.

[0010] The mold for connecting cross-air column materials as described above is characterized in that the center mold and the side mold are connected by a tenon-and-mortise sliding connection.

[0011] The mold for connecting cross-air column materials as described above is characterized in that the mold base is provided with a first limiting structure for limiting the movement of the side mold and a second limiting structure for limiting the movement of the center mold.

[0012] The mold for connecting cross-air column materials as described above is characterized in that the mold base is provided with a guide structure for guiding the movement of the side mold.

[0013] The mold for connecting cross-air column materials as described above is characterized in that a limiting frame is provided on the mold base, and the end face of the limiting frame is not higher than the lower edge of the outer peripheral mold surface.

[0014] The mold for connecting cross-air column materials as described above is characterized in that the upper part of the upper mold is a mold tube with an inner diameter matching the outer diameter of the air column, and the lower inner wall of the upper mold is conical, forming an inner circumferential mold surface.

[0015] Compared with the prior art, the present invention has the following advantages:

[0016] This utility model mold uses a multi-module group that can change the diameter of the air column material to expand the diameter of the tubular material end of the air column to form an outward sloping surface, so that the end of the tubular material is superimposed on the material around the connecting hole of the sheet material to be connected to the air column. Then, the upper mold and the lower mold weld the superimposed part of the two air tube materials. The operation is fast and efficient. The center mold and the side mold tightly expand the superimposed tubular material, and the welding area is flat, beautiful and airtight.

[0017] This utility model has a simple mold structure, which solves the problem of complex production when connecting the end of the air column tube material to the middle of the air column tube material, and improves the efficiency and quality of the connection production. Attached Figure Description

[0018] Figure 1 This is a three-dimensional structural diagram of the present invention in its unexpanded state;

[0019] Figure 2This is a three-dimensional structural diagram of the upper mold of this utility model;

[0020] Figure 3 This is a three-dimensional structural diagram of the lower mold of this utility model;

[0021] Figure 4 This is a partial exploded view of the lower mold structure of this utility model;

[0022] Figure 5 This is a top view of the structure of the lower mold after diameter expansion and matching with the upper mold of this utility model;

[0023] Figure 6 This is a structural diagram of the present invention in its application state;

[0024] Figure 7 This is a schematic diagram of a cross-shaped air column structure where one end of an air column is connected to the middle of another air column. Detailed Implementation

[0025] The present invention will be further described in detail below with reference to specific embodiments.

[0026] like Figure 1-6 As shown, the mold for connecting cross-air column materials includes an upper mold 1 and a lower mold 3 located on a mold base 2. The lower mold 3 is fitted onto the inner circumferential wall of the air column material. When the upper mold 1 is closed, it is fitted onto the lower mold 3 and the outer circumference of the air column material. The lower mold 3 has an outer circumferential mold surface 30 with a gradually decreasing diameter at its free end, and the upper mold 1 has an inner circumferential mold surface 10 with a gradually increasing diameter at its free end. The large diameter of the inner circumferential mold surface 10 is larger than the outer diameter of the cross-air column material, and the small diameter of the inner circumferential mold surface 10 matches the outer diameter of the air column. When welding materials, the outer circumferential mold surface 30 of the lower mold 3 aligns with the inner circumferential mold surface 10 of the upper mold 1 on the inner circumference of the upper mold 1 on the outer circumference of the outer layer material to weld the materials. In this invention, after the lower mold 3 is fitted onto the inner circumference of the air column, the gradually increasing diameter of its outer circumferential mold surface 30 expands the lower diameter of the tubular material of the air column. Then, the sheet material of the air column to be connected is fitted onto the outer circumference of the tubular material, forming a superimposed material on the outer circumferential mold surface 30. The closing end of the upper mold 1 is a conical tube. After mold closing, its inner circumferential mold surface 10 hot-presses the outer circumferential mold surface 30 to weld the material. The superimposed part of the material is welded to the inner circumferential mold surface 10 using a frustum or elliptical frustum-shaped outer circumferential mold surface 30, which is quick, smooth, and results in a smooth and strong weld surface.

[0027] The diameter of the outer peripheral mold surface 30 of the lower mold 3 can be fixed, ranging from less than the inner diameter of the air column to greater than the outer diameter of the air column, forming an elliptical or frustum-shaped welding perimeter. However, directly fitting the tubular material of the air column onto the lower mold 3 in this way can be difficult to operate when the diameter of the outer peripheral mold surface 30 is greater than the diameter of the air column material, or an additional cutting process may be required.

[0028] To rapidly and uniformly increase the diameter of the air column material, in a preferred embodiment of the lower mold 3, the lower mold 1 is first inserted into the air column material while maintaining a diameter smaller than that of the air column material. Then, the diameter of the outer peripheral mold surface 30 of the lower mold 1 is changed, gradually increasing from being flush with the inner wall of the air column material to being larger than the diameter of the air column material. This expands the peripheral wall of the welding end of the air column material and allows it to adhere to the outer peripheral mold surface 30, resulting in rapid and uniform expansion of the material. The weld maintains good tensile strength and airtightness. Of course, the gradually increasing diameter end of the mold surface must ensure a sufficient welding area without damaging the air column material.

[0029] In one specific embodiment, the lower mold 3 includes multiple movable modules. After the multiple modules move outward, they form a conical outer peripheral mold surface 30 with a shape consistent with the inner circumference of the air column and a diameter that gradually increases from top to bottom. The upper diameter of the outer peripheral mold surface 30 is the same as the inner diameter of the air column, and the lower diameter of the outer peripheral mold surface 30 gradually increases to form a conical welding part. The upper part of the upper mold 1 is a tube mold with an inner diameter matching the outer diameter of the air column. The lower inner diameter of the upper mold 1 increases to form a conical tube with an inner peripheral mold surface 10. The upper mold 1 is connected to a movement drive and a high-frequency welding energy source. The movement drive drives the upper mold 1 to move and close with the lower mold 3, and the welding energy provides high-frequency welding to the inner peripheral mold surface 10 to complete the welding. The lower mold 3 can be composed of at least one central module and multiple arc-shaped side modules. Before the movement increases the diameter, the diameter of the ring containing the multiple side modules is smaller than the inner diameter of the air column, which facilitates the fitting of the air column material. After the diameter increases, the outer wall of the central mold and the outer wall of the side modules are joined to form a complete conical circumferential surface, i.e., the outer peripheral mold surface 30. The side modules are designed to slide, while the center module is connected to a motion driver. When the center module moves, it causes the side modules to slide.

[0030] To reduce the number of modules and simplify the structure of the lower mold 1, in a preferred embodiment of this invention, multiple modules include a central mold 31 and at least two side molds 32 located outside the central mold 31. The central mold 31 has an extrusion ramp 311 that pushes the side molds 32 outward and an outer end wall 312 that completes the outer periphery of the side molds 32. Both the outer end wall 312 and the outer side wall of the side molds 32 are partially conical walls. During the movement of the central mold, the side molds 32 are pushed outward until the outer end wall 312 of the central mold 31 aligns with the outer side wall of the side molds 32 to form an outer peripheral mold surface 30.

[0031] Preferably, the central mold 31 moves up and down between the mold base 2 and the upper mold 1. The central mold 31 is smaller at the top and larger at the bottom. The two side walls that mate with the side molds 32 gradually slope from the bottom towards the free end to form extrusion slopes 311. The mating side walls of the side molds 32 are matching sloped side walls. Only a lifting drive for driving the central mold 31 to move up and down need to be provided on the mold base 1. More preferably, the mold base 2 is provided with a mold cavity 21. The central mold 31 extends into the mold cavity 21 and slides up and down along the side wall of the mold cavity 21. This prevents the central mold 31 from shaking during the lifting process, which would affect the speed of the outward expansion movement of the lower mold 3.

[0032] In a preferred embodiment, a tenon and mortise structure 33 is provided between the center mold 31 and the side mold 32 to achieve a limited sliding connection, which guides the pushing and prevents the side mold 32 from being misaligned during movement.

[0033] Furthermore, the mold base 2 is provided with a first limiting structure to limit the movement of the side mold 32 and a second limiting structure to limit the movement of the center mold 31. In a preferred embodiment of the first limiting structure, the mold base 2 is provided with a limiting groove 22, and the side mold 32 is provided with a limiting block 321 extending into the limiting groove 22, which restricts the side mold 32 from moving excessively in the direction of movement, thus preventing it from affecting the sealing of the outer peripheral mold surface 30. Of course, the limiting groove 22 and the limiting block 321 can be interchanged.

[0034] Regarding the second limiting structure for restricting the movement of the center mold 31, in a preferred embodiment, a lifting groove 23 with its upper end closed is provided on the mold base 2, and a matching lifting block 313 is provided on the center mold 31. While guiding the center mold 31 to rise and fall, the lifting block 313 is prevented from moving excessively and changing the diameter of the lower mold 3 too much, thus affecting the welding performance of the material.

[0035] The first limiting structure is symmetrically arranged on each side mold 32, and the second limiting structure is symmetrically arranged on the center mold 31 to ensure the stability of movement.

[0036] Furthermore, the mold base 2 is provided with a guide structure for guiding the movement of the side mold 32. A guide groove 24 is provided at the upper end of the mold base 2, and the side mold 32 is provided with a guide edge 322 that moves along the guide groove 243, which is conducive to the smooth movement of the side mold 32.

[0037] To prevent the side mold 32 from warping during movement, a limiting frame 4 is provided on the mold base 2. The end face of the limiting frame 4 is not higher than the lower edge of the outer peripheral mold surface 30, ensuring the flatness of the lower mold 3 and thus preventing wrinkles in the welded part 7.

[0038] A specific embodiment of connecting cross-shaped air column materials using the mold of this utility model. The cross-shaped air column materials include a tubular material 5 and a sheet material 6. The sheet material 6 has a connecting hole that matches the outer periphery of the tubular material 5. The air column materials have a certain degree of hardness so that the tubular material 5 can stand upright. In the connecting process, the tubular material 5 is fitted onto the outer periphery of the lower mold 3. At this time, the outer periphery mold surface 30 of the lower mold 3 is smaller than the inner periphery of the tubular material 5. When the lower end of the tubular material 5 exceeds the outer periphery mold surface 30, the center mold 31 of the lower mold 3 is driven to move, thereby pushing the side mold 32 outward, until the outer end wall 312 of the center mold 31 and the outer side wall of the side mold 32 are joined and closed to form the outer periphery mold surface 30. The outer periphery mold surface 30 is close to the inner periphery wall of the lower end of the tubular material 5 and expands the lower end of the tubular material 5. Then, the sheet material 6 is fitted onto the outer periphery of the tubular material 5 and placed on the mold base 2. The enlarged periphery wall of the tubular material 5 is superimposed around the connecting hole of the sheet material 6. Then, the upper mold 1 is driven to descend and a high frequency is applied. The inner periphery mold surface 10 of the upper mold 1 and the outer periphery mold surface 30 of the lower mold 3 are joined and hot-pressed to weld the superimposed materials to form the welded part 7 of the cross materials. After welding is completed, the two materials are removed, and the two sides of the sheet material 6 are sealed to form a tubular material 60, such as... Figure 7 As shown, complete the connection of the cross air columns.

Claims

1. A mold for connecting cross-flow air columns, characterized in that: The mold includes an upper mold (1) and a lower mold (3) located on a mold base (2). The lower mold (3) has an outer peripheral mold surface (30) that can expand one end of the air column tubular material. The upper mold (1) has an inner peripheral mold surface (10) with a gradually increasing diameter at the free end. The diameter of the upper mold (1) is larger than the diameter of the cross air column material. When the mold is closed, the upper mold (1) is fitted onto the outer periphery of the lower mold (3) so that the outer peripheral mold surface (30) and the inner peripheral mold surface (10) match and clamp the superimposed material for welding.

2. The mold for connecting cross-flow air columns according to claim 1, characterized in that: The diameter of the outer peripheral mold surface (30) gradually increases from being smaller than the diameter of the air column tubular material at the free end to being larger than the diameter of the air column tubular material.

3. The mold for connecting cross-flow air columns according to claim 1, characterized in that: The lower mold (3) includes multiple movable modules. After the multiple modules move outward, the outer peripheral walls of the multiple modules form an outer peripheral mold surface (30) that matches the inner peripheral mold surface (10). The upper diameter of the outer peripheral mold surface (30) is the same as the inner diameter of the air column, and the lower diameter gradually increases to form a conical welding part.

4. The mold for connecting cross-flow air columns according to claim 3, characterized in that: The multiple modules include a central mold (31) and at least two side molds (32) located outside the central mold (31). The central mold (31) is provided with an extrusion inclined surface (311) that pushes the side mold (32) outward and an outer end wall (312) that connects with the outer wall of the side mold (32) after pushing to form a complete outer periphery.

5. The mold for connecting cross-air column materials according to claim 4, characterized in that: The central mold (31) moves up and down between the mold base (2) and the upper mold (1). The central mold (31), which is smaller at the top and larger at the bottom, forms an extrusion slope (311) that connects with the multiple side molds (32).

6. The mold for connecting cross-air column materials according to claim 4 or 5, characterized in that: The center mold (31) and the side mold (32) are connected by a tenon and mortise joint.

7. The mold for connecting cross-air column materials according to claim 4, characterized in that: The mold base (2) is provided with a first limiting structure that limits the movement of the side mold (32) and a second limiting structure that limits the movement of the center mold (31).

8. The mold for connecting cross-air column materials according to claim 4, characterized in that: The mold base (2) is provided with a guide structure to guide the movement of the side mold (32).

9. The mold for connecting cross-air column materials according to claim 4, characterized in that: The mold base (2) is provided with a limiting frame (4), and the end face of the limiting frame (4) is not higher than the lower edge of the outer peripheral mold surface (30).

10. The mold for connecting cross-flow air columns according to claim 1, characterized in that: The upper part of the upper mold (1) is a mold tube with an inner diameter that matches the outer diameter of the air column, and the lower inner wall of the upper mold (1) is conical, forming an inner circumferential mold surface (10).

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