Cavity welding mold

Abstract

Disclosed in the present invention is a cavity welding mold, comprising a bottom plate, a cover plate, and a pressing strip. A welding strip is provided on the cover plate; the cover plate is fixed to the bottom plate by means of the pressing strip; a plurality of guide holes are further formed in the cover plate; a plurality of limiting column locking holes matching the guide holes are formed in the bottom plate; limiting columns are provided in the guide holes; one end of each of the limiting columns is connected to the corresponding limiting column locking hole; heating holes are formed in the bottom plate; and heating members are provided in the heating holes. The welding strip is provided on the cover plate, so that removal of the bottom plate is avoided. During replacement of a mold, only the cover plate needs to be replaced. During replacement of the mold, there is no need to power off the heating members as the cover plate is mounted and removed, and an operator only needs to wear a protective product to remove and replace the cover plate. After the welding strip is provided on the cover plate, only the cover plate needs to be moved, so that safety during carrying is improved and the operation is more convenient.

Description

A chamber welding mold Technical Field

[0001] The present invention relates to the field of pharmaceutical technology, in particular to a cavity welding mould. Background Art

[0002] Currently, the production of flexible packaged infusion products is primarily completed using fully automatic bag-making and filling machines. These machines often involve the use of welding molds during the bag-making process. Depending on the specifications, welding molds must be replaced with matching molds. This requires the entire mold to be disassembled and replaced with a new one, a time-consuming process. The molds are also heavy, making them difficult for operators to handle and transport, resulting in low efficiency. A schematic diagram of the existing welding mold is shown in Figure 1, with the base plate structure shown in Figure 2. As shown in Figures 1 and 2, the existing welding mold is mounted on a fixed workstation. To change specifications, the mold must first loosen the retaining strips on the locking holes of the mold's positioning and limiting columns and remove the heating rods that heat the mold before removal. This presents the following problems: 1. The mold's weight poses safety risks during handling and is labor-intensive to remove. 2. Removal requires shutting down the heating system and removing the heating wires before the mold can be removed. 3. After the mold is replaced, testing can only be performed after the mold reaches the set temperature, which is time-consuming.

[0003] Summary of the Invention

[0004] The technical problem to be solved by the present invention is the above-mentioned problem existing in the existing welding mold. The purpose of the present invention is to provide a cavity welding mold.

[0005] The present invention is achieved through the following technical solutions:

[0006] A chamber welding mold includes a base plate, a cover plate and a pressure strip, wherein a welding strip is provided on the cover plate, and the cover plate is fixed to the base plate through the pressure strip, and a plurality of guide holes are also provided on the cover plate, and a plurality of limit column locking holes are provided on the base plate to cooperate with the guide holes, a limit column is provided in the guide hole, and one end of the limit column is connected to the limit column locking hole; a heating hole is provided on the base plate, and a heating element is provided in the heating hole.

[0007] As a possible design, the pressure strip and the base plate are connected by bolts.

[0008] As a possible design, the pressure strip and the bottom plate are magnetically attracted.

[0009] As a possible design, a heat insulation plate is provided on the surface of the cover plate facing away from the bottom plate.

[0010] As a possible design, the heat insulation plate is covered on the cover plate.

[0011] As a possible design, a handle is provided on the heat insulation board.

[0012] As a possible design, the handle is provided at the edge of the heat insulation board.

[0013] As a possible design, the welding strip is arranged in the middle of the cover plate.

[0014] As a possible design, the welding strip has a special-shaped structure.

[0015] As a possible design, the heating hole is square.

[0016] Beneficial effects of the present invention:

[0017] 1. The present invention installs the welding rod on the cover plate, thus avoiding the need to disassemble the base plate. When replacing the mold, only the cover plate needs to be replaced. Therefore, when replacing the mold, the heating element will not be powered off during the installation and removal of the cover plate. The operator only needs to wear protective equipment (high-temperature resistant gloves) to remove the cover plate and replace it.

[0018] 2. After the welding rod is set on the cover, only the cover needs to be moved, so it is safer and more convenient to operate during transportation.

[0019] 3. The design of the welding strips on the cover is more flexible. When changing to multiple specifications, you only need to replace the cover with different welding strips, which is more cost-effective.

[0020] 4. Since the welding mold is welded by the film material with corresponding temperature, in order to reduce the problem of temperature loss during the welding process, adding a heat insulation board can greatly reduce the temperature loss and can fit well with the cover surface to prevent temperature loss.

[0021] 5. The handle is provided to facilitate the replacement and removal of the cover.

[0022] 6. The welding strips and cover plates can be of special-shaped structures, which are more compact, more cost-effective, and more suitable for the production of different types of products. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] In order to more clearly illustrate the technical solutions of the exemplary embodiments of the present invention, the following briefly introduces the drawings required for use in the examples. It should be understood that the following drawings only illustrate certain embodiments of the present invention and should not be considered as limiting the scope. A person of ordinary skill in the art can also derive other relevant drawings based on these drawings without inventive effort. In the drawings:

[0024] FIG1 is an exploded schematic diagram of an existing welding mold;

[0025] FIG2 is a schematic structural diagram of an existing welding mold;

[0026] FIG3 is an exploded schematic diagram of a cavity welding mold disclosed in an embodiment of the present invention;

[0027] FIG4 is a schematic structural diagram of a cavity welding mold disclosed in an embodiment of the present invention;

[0028] FIG5 is a schematic diagram of a cover plate, a heat insulation plate and a welding strip according to an embodiment of the present invention;

[0029] FIG6 is a schematic diagram of a special-shaped small-sized cover plate, a heat insulation plate and welding strips in an embodiment of the present invention.

[0030] The marks and corresponding parts names in the accompanying drawings are: 1-base plate, 2-heating hole, 3-welding strip, 4-limiting column locking hole, 5-pressing strip, 6-positioning locking hole, 7-cover plate, 8-base plate fixing hole, 9-guide hole, 10-fixing hole, 11-heat insulation board, 12-handle. DETAILED DESCRIPTION

[0031] In order to make the objectives, technical solutions and advantages of the present invention more clearly understood, the present invention is further described in detail below in conjunction with examples and drawings. The exemplary embodiments of the present invention and their descriptions are only used to explain the present invention and are not intended to limit the present invention.

[0032] It should be noted that when an element is referred to as being “fixed on” or “disposed on” another element, it may be directly on the other element or indirectly on the other element. When an element is referred to as being “connected to” another element, it may be directly connected to the other element or indirectly connected to the other element.

[0033] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be understood to indicate or imply relative importance or implicitly specify the number of the technical features indicated. Thus, a feature specified as "first" or "second" may explicitly or implicitly include one or more of the features. In the description of the present invention, "plurality" means two or more, unless otherwise specifically defined. "Several" means one or more, unless otherwise specifically defined.

[0034] In the description of the present invention, it should be understood that the terms "up", "down", "front", "back", "left", "right", etc., indicating directions or positional relationships, are based on the directions or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific direction, be constructed and operated in a specific direction, and therefore cannot be understood as a limitation on the present invention.

[0035] In the description of the present invention, it should be noted that, unless otherwise expressly specified or limited, the terms "mounted," "connected," and "connected" should be understood in a broad sense. For example, they may refer to fixed, detachable, or integral connections; mechanical or electrical connections; direct or indirect connections through an intermediate medium; and may encompass internal communication between two components or interaction between two components. Those skilled in the art will understand the specific meanings of the above terms in the present invention based on specific circumstances.

[0036] Since the welding strips in the existing welding mold are set on the base plate, the base plate needs to be replaced when changing different molds. This means that the heating element needs to be powered off before disassembly. After replacement, it needs to be powered on and preheated to the set temperature before testing can be carried out, which is time-consuming. In addition, the base plate and cover plate need to be disassembled and replaced together, which increases the safety risks during transportation and is labor-intensive during disassembly.

[0037] In response to the above problems, as shown in Figures 3 and 4, an embodiment of the present invention provides a chamber welding mold, including a base plate 1, a cover plate 7 and a pressure strip 5, the cover plate 7 is provided with a welding strip 3, the cover plate 7 is fixed to the base plate 1 through the pressure strip 5, the cover plate 7 is also provided with a plurality of guide holes 9, the base plate 1 is provided with a plurality of limit column locking holes 4 arranged in conjunction with the guide holes 9, a limit column is provided in the guide hole 9, and one end of the limit column is connected to the limit column locking hole 4; a heating hole 2 is provided on the base plate 1, and a heating element is provided in the heating hole 2.

[0038] The pressure strip 5 is mainly used to press the cover plate 7 onto the base plate 1 so that it is flat against the base plate 1. The connection between the pressure strip 5, the cover plate 7 and the base plate 1 can be through a bolt assembly or bolt connection, or it can be a magnetic connection, or it can adopt a cylinder clamping method, and the specific selection depends on the actual application. The cylinder clamping method is an existing method, and the following method can also be adopted: only by controlling the valve switch, when the pressure strip 5 is installed in the specified position, the control valve switch is turned on, the cylinder is actuated, clamping or pressing the pressure strip, and the current pressure applied to the pressure strip is displayed. When it is necessary to remove the pressure strip 5 and the cover plate 7, just switch the control valve to the closed position, and the cover plate 7 can also be quickly removed.

[0039] When bolting, the bead 5, cover 7, and base 1 are all provided with holes. Bolts are inserted through these holes in sequence, and one end of the bead 5 or base 1 is connected to a nut. When bolting, the bead 5, cover 7, and base 1 are all provided with threaded holes. Bolts are inserted through these holes in sequence, and then connected with a nut. When magnetic connection is used, magnets are installed on all three, and the strength of the magnetism is selected according to actual needs.

[0040] In order to facilitate the replacement of the welding rod 3, the welding rod 3 and the cover plate 7 are connected in a detachable manner. In some cases, only the welding rod 3 needs to be replaced to meet the requirements.

[0041] In order to ensure the stability of the welding process, the limiting posts sequentially pass through the guide holes 9 to reach the limiting post locking holes 4 and are connected to the limiting post locking holes 4, thereby preventing the cover plate 7 from moving during the welding process.

[0042] The shape of the heating holes 2 can be arbitrary. To ensure more uniform heating, they are generally arranged in a regular pattern, with the distance between adjacent heating holes 2 determined based on the actual heating effect. The heating holes 2 are generally rectangular, providing ample space for the heating element and a window for heat transfer. The heating element is a common heating device in the art, such as a resistance wire.

[0043] The limiting column has the same structure as the limiting column used in the existing welding mold and will not be introduced in detail here.

[0044] The installation position of the welding rod 3 can be selected according to the specific shape of the cover plate 7. The welding rod 3 is of regular shape. In order to ensure good welding, generally, as shown in Figures 3 and 4, the welding rod 3 is set in the middle part of the cover plate 7.

[0045] When the welding strip 3 is of a special shape, the shapes of the welding strip 3 and the cover plate 7 form a special-shaped small-size mold, one structure of which is shown in FIG6 . The special-shaped small-size mold is more miniaturized, more cost-effective, and more suitable for the production of different types of products.

[0046] To further save energy, as shown in FIG5 , a heat insulation board 11 can be provided on the surface of the cover plate 7 facing away from the bottom plate 1 to shield the area other than the welding strip 3. The heat insulation board 11 can be made of a common insulation material in the art, such as XPS insulation board, polyurethane insulation board, EPS insulation board, etc.

[0047] In a possible embodiment, in order to ensure stable installation of the insulation board 11, corresponding guide holes 9 are also opened on the insulation board 11. The guide holes 9 on the insulation board 11 and the guide holes 9 on the cover plate 7 are aligned up and down to facilitate the passage of the guide column.

[0048] In one possible embodiment, to facilitate handling of the heat shield 11, a handle 12 may be provided on the heat shield 11. The handle 12 may be located anywhere on the heat shield 11, such as in the middle or at any edge. To prevent the handle 12 from becoming excessively hot during the welding process, the handle 12 is preferably located at an edge of the heat shield 11.

[0049] In one possible embodiment, to further enhance the stability of the cover plate 7, a plurality of fixing holes 10 are provided on both the cover plate 7 and the base plate 1. The fixing holes 10 on both plates are aligned vertically and connected by bolts or bolt assemblies. The location of the fixing holes 10 is generally not required. For ease of installation, the fixing holes 10 and the locking holes 4 of the retaining posts can be aligned. The straight line containing the fixing holes 10 and the locking holes 4 of the retaining posts is parallel to the edge of the cover plate 7.

[0050] The welding rod 3 is set on the cover plate 7, so the welding mold is divided into two parts, that is, the welding rod 3 is not set on the base plate 1. When disassembling or replacing, it is only necessary to remove the cover plate 7, which not only saves time, but also reduces the weight of disassembly and increases the safety of replacement.

[0051] When disassembling or replacing, the heating element will not be powered off when installing or removing the cover plate 7. The operator only needs to wear protective equipment (high-temperature resistant gloves) to remove the cover plate 7 and replace it with the cover plate 7 that needs to be replaced, thereby avoiding the need to heat it after reinstallation, and testing can only be carried out after heating to the set temperature, thereby saving time and improving welding efficiency.

[0052] The welding strip 3 is located in the center of the cover plate 7, and the pressure strip 5 is installed on both sides of the cover plate 7. In order to better fix the cover plate 7 and improve stability, fixing holes 10 are added to the cover plate 7 to improve the fit between the cover plate 7 and the base plate 1, thereby improving the thermal conductivity uniformity of the cover plate 7.

[0053] The designs of the cover plate 7 and the welding strip 3 are more flexible. When changing to a variety of specifications, only the welding strip 3 needs to be replaced, which is more cost-effective.

[0054] Since the welding mold is welded by a film material corresponding to the temperature, in order to reduce the problem of temperature loss during the welding process, a heat insulation plate 11 is added to the surface of the cover plate 7 where the welding strip 3 is provided, which can greatly reduce the temperature loss; at the same time, a handle 12 is provided on the edge of the heat insulation plate 11, which is more conducive to taking and placing the heat insulation plate 11 and the cover plate 7.

[0055] Special-shaped small-size molds. This design makes the mold smaller, more cost-effective, and more suitable for the production of different types of products.

[0056] The specific implementation methods described above further illustrate the objectives, technical solutions and beneficial effects of the present invention in detail. It should be understood that the above description is only a specific implementation method of the present invention and is not intended to limit the scope of protection of the present invention. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included in the scope of protection of the present invention.

Claims

1. A chamber welding mold, characterized in that: The invention comprises a base plate (1), a cover plate (7) and a pressure strip (5); the cover plate (7) is provided with a welding strip (3); the cover plate (7) is fixed to the base plate (1) through the pressure strip (5); the cover plate (7) is also provided with a plurality of guide holes (9); the base plate (1) is provided with a plurality of limit column locking holes (4) which are arranged in coordination with the guide holes (9); a limit column is arranged in the guide hole (9); one end of the limit column is connected to the limit column locking hole (4); the base plate (1) is provided with a heating hole (2); a heating element is arranged in the heating hole (2).

2. A chamber welding mold according to claim 1, characterized in that: The pressure strip (5) and the base plate (1) are connected by bolts.

3. A chamber welding mold according to claim 1, characterized in that: The pressure strip (5) and the bottom plate (1) are magnetically attracted.

4. A chamber welding mold according to claim 1, characterized in that: A heat insulation plate (11) is arranged on the surface of the cover plate (7) facing away from the base plate (1).

5. The chamber welding mold according to claim 1, characterized in that: The heat insulation board (11) covers the cover board (7).

6. A chamber welding mold according to claim 4, characterized in that: The heat insulation board (11) is provided with a handle (12).

7. A chamber welding mold according to claim 6, characterized in that: The handle (12) is arranged at the edge of the heat insulation board (11).

8. The chamber welding mold according to claim 1, characterized in that: The welding rod (3) is arranged in the middle of the cover plate (7).

9. The chamber welding mold according to claim 1, characterized in that: The welding rod (3) has a special-shaped structure.

10. The chamber welding mold according to claim 1, characterized in that: The heating hole (2) is square.

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