A seam-making device for inflatable boats

Abstract

This utility model discloses a seam-jointing device for inflatable boat manufacturing, relating to the field of inflatable boat manufacturing technology. It includes an unjoined inflatable boat, with positioning pressure plates at both its upper and lower ends. Each positioning pressure plate has a heating frame on its exterior. Two heating frames are fixedly connected to a metal heat-conducting plate on their adjacent sides, and heating strips are fixedly connected to the metal heat-conducting plates on their opposite sides, located inside the heating frames. The heating strips are used to heat and melt the unjoined inflatable boat. This utility model achieves the effect of simultaneous cutting after heat welding by using the heating frame and the cutting shear body. Traditional manufacturing processes typically involve completing heat welding first, and then transferring the process to the cutting step after the welded area has cooled and reached a certain strength. Combining these two operations eliminates the time spent on intermediate handling, waiting, and repositioning, significantly shortening the production cycle.

Description

Technical Field

[0001] This utility model relates to the field of inflatable boat manufacturing technology, and in particular to a seam device for inflatable boat manufacturing. Background Technology

[0002] An inflatable rowboat is a watercraft designed with an inflatable structure as its core. It typically uses an inflatable structure, making it lightweight and portable. It can be used for paddling and rafting on the ocean, as well as for flatwater travel, and is convenient to carry and store. The sides and bow of an inflatable rowboat are made of flexible hoses filled with pressurized gas. Some sections of the hull feature a wide-body design and added stabilizing fins to increase the contact area with the water and improve the boat's stability.

[0003] The current manufacturing process for inflatable boats typically involves cutting PVC fabric, hot welding, and gluing. Hot welding fuses the PVC material by heating and melting it. However, in existing hot welding processes, excess PVC fabric cannot be cut off during the welding process, leading to an additional cutting step. This extra cutting step after hot welding lengthens the production process and increases the production time for each inflatable boat. Consequently, the overall production pace slows down, and the number of inflatable boats that can be completed per unit of time decreases.

[0004] To address the aforementioned issue of requiring additional trimming, a cutting shear is installed after the welding unit, allowing excess material to be trimmed during the welding process. This merging of welding and trimming eliminates the need for separate trimming after welding, making the entire production process more streamlined. Simultaneous operation significantly reduces the production time for each inflatable boat, increasing output per unit time and improving overall production line efficiency. Furthermore, the elimination of frequent switching between welding and trimming equipment reduces equipment setup and preparation time, lowers the risk of downtime due to equipment changes, and enables more continuous and stable production.

[0005] However, in the existing hot-welding process, the PVC fabric may not cool down after welding. If cutting is performed at this time, the cutting shears may easily stick to the PVC material. This sticking PVC material can cause deviations during the cutting process, making it impossible to guarantee the accuracy of the cut dimensions. Furthermore, the sticking PVC material will leave uneven marks on the cut edges, resulting in rough edges or burrs. Utility Model Content

[0006] The purpose of this invention is to address the shortcomings of existing technologies by proposing a seam-jointing device for the manufacture of inflatable boats.

[0007] To achieve the above objectives, the present invention adopts the following technical solution:

[0008] A seam-jointing device for inflatable boat manufacturing includes an unjoined inflatable boat. Positioning plates are provided at both the top and bottom of the unjoined inflatable boat. Heating frames are provided on the exterior of each positioning plate. Metal heat-conducting plates are fixedly connected to the sides of the two heating frames that are close to each other. Heating strips are fixedly connected to the sides of the metal heat-conducting plates that are far apart and located inside the heating frames. The heating strips are used to heat and melt the unjoined inflatable boat. The heating strips heat the metal heat-conducting plates, and then the metal heat-conducting plates melt the edges of the unjoined inflatable boat, thereby achieving a heat-welding effect.

[0009] As a further improvement of this utility model, each of the positioning plates has a sliding groove on the side away from the unassembled inflatable boat. Telescopic pressing mechanisms are fixedly connected to the upper and lower ends of the two positioning plates, and a base plate is fixedly connected to the bottom end of each telescopic pressing mechanism. A second sliding groove is provided on the side of each positioning plate. The telescopic pressing mechanism drives the two positioning plates to move up and down, thereby achieving the effect of fixing the unassembled inflatable boat.

[0010] As a further improvement of this utility model, each of the sliding grooves has two sliders slidably connected inside. A heating frame and a cutting scissor body are respectively fixedly connected to the ends of the two sliders away from the positioning pressure plate. The ends of the cutting scissor body near the unassembled inflatable boat are pressed against the surface of the unassembled inflatable boat. A connecting chain is fixedly connected to the middle of the heating frame and the cutting scissor body, both located on the same positioning pressure plate. This connecting chain design allows cutting to be performed after a period of heat welding, thus preventing the cutting scissor body from adhering to the PVC material.

[0011] As a further improvement of this utility model, each connecting chain has a through rod in its middle, and each through rod has a baffle plate fixedly connected to its middle. Each through rod has a sliding plate fixedly connected to its bottom end. The connecting chain is positioned between the baffle plate and the sliding plate and is limited in its position. Two sliding plates are slidably connected inside two sliding grooves. Two wire holes are symmetrically opened at the top of each heating frame. The through rod, baffle plate, and sliding plate prevent the connecting chain from adhering to the melted, unjoined inflatable boat surface due to gravity.

[0012] As a further improvement of this utility model, a series wire is provided inside the wire hole. A heating strip is fixedly connected to the side of the metal heat-conducting plate near the inside of the heating frame. Two connecting wires are fixedly connected to the side of the heating strip away from the metal heat-conducting plate. The four series wires are respectively inserted into the four wire holes. Two series wires are connected to each of the four connecting wires, with each pair of the two series wires connecting the four connecting wires in series. The heating strips heat the metal heat-conducting plate, thereby achieving a melting effect.

[0013] Compared with the prior art, the advantages of this utility model are as follows:

[0014] 1. By combining the heating frame and the cutting shears, cutting can be performed simultaneously after heat welding. Traditional manufacturing processes typically involve completing heat welding first, then transferring the welded area to the cutting process after it has cooled and reached a certain strength. Combining these two operations eliminates the time spent on intermediate handling, waiting, and repositioning, significantly shortening the production cycle.

[0015] 2. By using connecting chains, it is possible to cut the inflatable boat after the hot weld has slightly cooled, without the connecting chains affecting the seam process. Cutting after the hot weld has slightly cooled means the welded area is basically stable but not yet fully hardened. This allows for more accurate cutting according to design requirements and avoids the increased cutting difficulty and errors caused by the welded area becoming too hard after complete cooling. Attached Figure Description

[0016] Figure 1 This is a three-dimensional structural diagram of the present invention.

[0017] Figure 2 This is a three-dimensional structural diagram of the positioning pressure plate, the connecting line, and the unassembled inflatable boat in this utility model.

[0018] Figure 3 This is a three-dimensional structural diagram of the inflatable boat without splicing in this utility model.

[0019] Figure 4 This is a three-dimensional structural diagram of the positioning pressure plate, sliding groove one, and sliding groove two in this utility model.

[0020] Figure 5 This is a three-dimensional structural diagram of the heating frame, the cutting scissors body, and the connecting chain in this utility model.

[0021] Figure 6 This is a cross-sectional three-dimensional structural diagram of the slider and heating frame in this utility model.

[0022] In the diagram: 101, positioning pressure plate; 102, telescopic pressing mechanism; 103, base plate; 104, sliding groove one; 105, sliding groove two; 201, slider; 202, heating frame; 203, cutter body; 204, connecting chain; 205, inserting rod; 206, baffle plate; 207, sliding plate; 208, wire hole; 209, heating strip; 210, connecting wire; 211, metal heat-conducting plate; 212, serial line; 300, unassembled inflatable boat. Detailed Implementation

[0023] To make the above-mentioned objectives, features, and advantages of this utility model more apparent and understandable, the specific embodiments of this utility model are described in detail below with reference to the accompanying drawings. Many specific details are set forth in the following description to provide a full understanding of this utility model. However, this utility model can be implemented in many other ways different from those described herein, and those skilled in the art can make similar modifications without departing from the spirit of this utility model. Therefore, this utility model is not limited to the specific embodiments disclosed below.

[0024] It should be noted that when an element is referred to as being "fixed to" another element, it can be directly attached to the other element or there may be an intervening element. When an element is referred to as being "connected to" another element, it can be directly connected to the other element or there may be an intervening element. The terms "vertical," "horizontal," "left," "right," and similar expressions used herein are for illustrative purposes only and do not represent the only possible implementation.

[0025] See attached document Figure 1 -Appendix Figure 6 A seam-making device for inflatable boats includes a positioning pressure plate 101, a telescopic pressing mechanism 102, a heating frame 202, a cutting shear body 203, a connecting chain 204, an insert rod 205, a heating strip 209, a metal heat-conducting plate 211, a connecting wire 212, and an unstitched inflatable boat 300.

[0026] In use, the positive and negative terminals of the wires are connected at the two series lines 212 respectively, so that the heating strip 209 is heated by electricity through the transmission of the connecting line 210. First, the unassembled inflatable boat 300 is placed between the two positioning plates 101 and aligned with the positioning plates 101. Then, the telescopic pressing mechanism 102 is activated so that the two positioning plates 101 clamp the unassembled inflatable boat 300. After clamping, the operator drives the heating frame 202 manually or by installing a motor at the heating frame 202. Under the drive, the slider 201 fixed to the heating frame 202 will move along the sliding groove 105. Since the heating strip 209 is energized and heated, the metal heat-conducting plate 211 will generate high temperature. The movement of the heating frame 202 will thermally weld the two metal heat-conducting plates 211 to the unassembled inflatable boat 300. Because the heating frame 202 and the cutting shear body 203 are connected by a connecting chain 204, the operation of the heating frame 202 will drive the cutting shear body 203 to move along the sliding groove 105, thus achieving the effect of cutting simultaneously after heat welding. Heat welding and cutting are two key steps in the manufacture of inflatable boats. The traditional manufacturing process usually involves completing heat welding first, and then transferring to the cutting process after the welded part has cooled and reached a certain strength. Combining the two operations eliminates the time spent on intermediate handling, waiting, and repositioning, greatly shortening the production cycle. Synchronous operation means a more compact and continuous production process, reducing potential production stoppages and chaos caused by process transitions. Production personnel do not need to frequently switch operating modes and equipment between different processes, reducing operational complexity and the probability of errors, making the entire production process smoother and more efficient.

[0027] Because the connecting chain 204 between the heating frame 202 and the cutting scissor body 203 is a flexible structure, when the heating frame 202 drives the cutting scissor body 203, the weight of the connecting chain 204 may cause it to contact the unassembled inflatable boat 300 before it has cooled down, resulting in poor cutting performance. By hanging the connecting chain 204 between the baffle plate 206 and the slide plate 207, contact between the connecting chain 204 and the unassembled inflatable boat 300 can be prevented. Furthermore, the connecting chain 204 ensures that the heating frame 202 moves a certain distance before driving the cutting scissor body 203. This allows for cutting of the unassembled inflatable boat 300 after it has cooled slightly following the hot welding process, while also ensuring that the connecting chain 204 does not interfere with the seam process. Cutting immediately after the hot welding has cooled slightly reduces the time spent on intermediate handling, waiting for complete cooling, and repositioning, significantly improving production efficiency, enabling faster response to market demands, and increasing product output per unit time. Cutting is performed after the hot weld has cooled slightly. At this point, the welded area is basically stable but not yet fully hardened, allowing for more accurate cutting according to design requirements. This also avoids the increased difficulty and error that would occur if the welded area became too hard after complete cooling. Precise cutting and reasonable planning of the installation positions of connecting devices minimize material waste. During the cutting process, precise trimming based on the actual shape and size of the product prevents material scrap due to cutting deviations.

[0028] The above description is only a preferred embodiment of the present utility model, but the protection scope of the present utility model is not limited thereto. Any equivalent substitutions or changes made by those skilled in the art within the technical scope disclosed in the present utility model, based on the technical solution and the inventive concept of the present utility model, should be included within the protection scope of the present utility model.

Claims

1. A seam-jointing device for manufacturing inflatable boats, comprising an unjoined inflatable boat (300), characterized in that, The unassembled inflatable boat (300) is provided with positioning pressure plates (101) at both the top and bottom. The positioning pressure plates (101) are provided with heating frames (202) on the outside. The two heating frames (202) are fixedly connected to a metal heat-conducting plate (211) on the side close to each other. The metal heat-conducting plates (211) are fixedly connected to a heating strip (209) on the side of the heating frame (202) away from each other. The heating strip (209) is used to heat and melt the unassembled inflatable boat (300).

2. The seam-jointing device for manufacturing inflatable boats according to claim 1, characterized in that, The positioning pressure plate (101) has a sliding groove (104) on the side away from the unassembled inflatable boat (300). The upper and lower ends of the two positioning pressure plates (101) are fixedly connected to a telescopic pressing mechanism (102). The bottom end of the telescopic pressing mechanism (102) is fixedly connected to a base plate (103). The side of the positioning pressure plate (101) has a sliding groove (105).

3. The seam-jointing device for manufacturing inflatable boats according to claim 2, characterized in that, Each of the sliding grooves (105) has two sliders (201) slidably connected inside. The ends of the two sliders (201) away from the positioning plate (101) are respectively fixedly connected to a heating frame (202) and a cutting scissor body (203). The end of the cutting scissor body (203) near the unassembled inflatable boat (300) is pressed against the surface of the unassembled inflatable boat (300). The heating frame (202) and the cutting scissor body (203) located on the same positioning plate (101) are both fixedly connected to a connecting chain (204).

4. The seam-jointing device for manufacturing inflatable boats according to claim 3, characterized in that, Each of the connecting chains (204) is provided with a through rod (205) in the middle, and a baffle plate (206) is fixedly connected to the middle of each through rod (205). A sliding plate (207) is fixedly connected to the bottom end of each through rod (205). The connecting chain (204) is positioned between the baffle plate (206) and the sliding plate (207) and is limited. The two sliding plates (207) are slidably connected inside the two sliding grooves (104). Two wire holes (208) are symmetrically opened at the top of each heating frame (202).

5. The seam-jointing device for manufacturing inflatable boats according to claim 4, characterized in that, The wire hole (208) is provided with a series wire (212). The metal heat-conducting plate (211) is fixedly connected to a heating strip (209) on the side near the heating frame (202). The heating strip (209) is fixedly connected to two connecting wires (210) on the side away from the metal heat-conducting plate (211). The four series wires (212) are respectively inserted into the four wire holes (208). The connecting wires (210) are connected to two series wires (212). The two series wires (212) are connected in pairs to the four connecting wires (210).

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