Novel hot knife assembly of bag making machine

Abstract

The utility model discloses a novel hot knife assembly of a bag making machine. The novel hot knife assembly comprises a hot knife main body and a built-in electric heating tube, a through containing cavity is formed in the hot knife body, and an electric heating pipe is arranged in the containing cavity. A fixing end is arranged at one end of the electric heating tube, a fixing hole is formed in the center of the fixing end, a butt-joint cover is rotationally connected in the fixing hole, and a cross-shaped protrusion is arranged on the outer vertical face of the butt-joint cover. The other end of the electric heating tube is connected with a cable connecting wire; internal threads are arranged at openings in the two ends of the containing cavity, a sealing cover is arranged at one end of the containing cavity, a cross-shaped groove is formed in the inner side face of the sealing cover, and the cross-shaped groove is matched with the cross-shaped protrusion in an inserted mode; a pressing cover is arranged at the other end of the accommodating cavity, and is rotationally connected with the opening of the accommodating cavity to press the end part of the electric heating tube. According to the utility model, through the arrangement of the limiting structure, the shaking of the internal electric heating tube is effectively avoided, the stability is improved, meanwhile, the pressing covers are optimized, only one group of pressing covers is needed, and the mounting and dismounting are convenient and fast.

Description

Technical Field

[0001] This utility model relates to the field of hot-scaling blades for bag making machines, and in particular to a novel hot-scaling blade assembly for bag making machines. Background Technology

[0002] A hot-blade assembly is a heating element commonly used in bag-making machines, packaging machines, and other equipment. The built-in heating rod heats the hot-blade, allowing the plastic bag to be sealed while being cut, thereby improving product quality and production efficiency.

[0003] Traditional hot irons have a single opening. The heating element is inserted directly and then sealed during installation. Sealant and nuts are used during sealing, which makes removal difficult. Also, since only one end of the heating element is fixed after insertion, the other end will wobble slightly during the up-and-down movement of the hot iron. This lack of stability can easily cause wear on the heating element and may also loosen the nut. Utility Model Content

[0004] The purpose of this invention is to provide a new type of hot knife assembly for a bag making machine that is stable, easy to assemble and disassemble.

[0005] The purpose of this utility model is achieved as follows: A novel hot-blade assembly for a bag-making machine includes a hot-blade body and a built-in electric heating tube; the hot-blade body has a through-hole receiving cavity, and the electric heating tube is installed inside the receiving cavity; one end of the electric heating tube has a fixed end, and the fixed end has a fixed hole at its center, and a docking cover is rotatably connected inside the fixed hole, and the outer surface of the docking cover has a cross protrusion; the other end of the electric heating tube is connected to a cable connecting wire; the openings at both ends of the receiving cavity have internal threads, and one end of the receiving cavity has a sealing cover, the inner side of which has a cross groove, and the cross groove and the cross protrusion are inserted into each other; the other end of the receiving cavity has a pressing cover, which is rotatably connected to the opening of the receiving cavity and presses the end of the electric heating tube.

[0006] Preferably, the center of the cross protrusion is provided with a positioning rod, the center of the cross groove is provided with a positioning hole, the positioning hole is set to be conical, and the positioning rod is inserted into the positioning hole.

[0007] Preferably, the clamping cover has a hollow structure, and an abutment plate extends from one outer end of the clamping cover toward the central axis of the clamping cover. The outer side of the clamping cover is provided with external threads, and the clamping cover and the receiving cavity are rotatably connected to the abutment plate and the end of the heating tube.

[0008] Preferably, the inner side of the contact plate is covered with a rubber layer, which abuts against the end of the heating element.

[0009] Preferably, a rubber ring is provided between the contact plate and the inner wall of the pressing cover, and the diameter of the rubber ring increases from one side of the contact plate to the other side.

[0010] Preferably, the contact plate has an opening at its center, and a rubber retainer is provided at the opening, with the connecting wire placed inside the rubber retainer.

[0011] Compared with the prior art, the advantages of this utility model are:

[0012] 1. A cross-shaped protrusion is provided at one end of the heating element to fit into the cross-shaped groove of the sealing cap, ensuring that the heating element will not rotate or shake after insertion. This makes the internal heating element more stable, especially during the up-and-down movement of the hot iron.

[0013] 2. The lead end of the heating element is fixed by a special clamping cap. After being fixed, the heating element is squeezed against the sealing cap at the other end. At the same time, the clamping cap is equipped with a rubber layer and a rubber ring to protect or limit the heating element, which can ensure that the heating element will not shake.

[0014] 3. The rubber clamp sleeve can effectively prevent excessive shaking of the output end, further protecting the output end from short circuits or electric shocks. Attached Figure Description

[0015] Figure 1 This is a schematic diagram of the structure of this utility model.

[0016] Figure 2 for Figure 1 Enlarged view of the structure at point A in the middle.

[0017] Figure 3 for Figure 1 Enlarged view of the structure at point B in the middle.

[0018] Figure 4 This is a schematic diagram of the electric heating tube positioning rod of this utility model.

[0019] Figure 5 This is a schematic diagram of the structure of the clamping cap of this utility model.

[0020] The components include: 1. Hot knife body; 101. Receiving cavity; 2. Heating tube; 201. Fixing end; 2011. Fixing hole; 202. Cable connection wire; 3. Connecting cover; 301. Cross protrusion; 3011. Positioning rod; 4. Sealing cover; 401. Cross groove; 4011. Positioning hole; 5. Pressing cover; 501. Contact plate; 6. Rubber layer; 7. Rubber ring; 8. Rubber ferrule sleeve. Detailed Implementation

[0021] The following specific embodiments illustrate the implementation of this utility model. Those skilled in the art can easily understand other advantages and effects of this utility model from the content disclosed in this specification.

[0022] It should be noted that in the description of this utility model, the terms "center," "upper," "lower," "left," "right," "vertical," "horizontal," "inner," and "outer," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, or the orientation or positional relationship commonly used when the utility model product is in use. These terms are used only for the convenience of describing this utility model and for simplifying the description, and do not indicate or imply that the device or component referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model. Furthermore, the terms "first," "second," and "third," etc., are only used to distinguish descriptions and should not be construed as indicating or implying relative importance. The terms "horizontal," "vertical," and "suspended," etc., do not indicate that the component must be absolutely horizontal or suspended, but rather that it can be slightly tilted. For example, "horizontal" simply means that its direction is more horizontal than "vertical," and does not mean that the structure must be completely horizontal, but can be slightly tilted.

[0023] In the description of this utility model, it should also be noted that, unless otherwise explicitly specified and limited, the terms "set," "install," "connect," and "link" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances.

[0024] like Figure 1-5 As shown, a novel hot-blade assembly for a bag-making machine includes a hot-blade body 1 and a built-in heating element 2. The hot-blade body 1 has a through-hole accommodating cavity 101, and the heating element 2 is disposed inside the accommodating cavity 101. One end of the heating element 2 has a fixed end 201, and the fixed end 201 has a fixed hole 2011 at its center. A docking cover 3 is rotatably connected inside the fixed hole 2011, and a cross protrusion 301 is provided on the outer surface of the docking cover 3. The other end of the heating element 2 is connected to a cable connecting wire 202. The openings at both ends of the accommodating cavity 101 have internal threads. One end of the accommodating cavity 101 has a sealing cover 4, and the inner side of the sealing cover 4 has a cross groove 401, which is inserted into and engaged with the cross protrusion 301. The other end of the accommodating cavity 101 has a pressing cover 5, which is rotatably connected to the opening of the accommodating cavity and presses the end of the heating element 2.

[0025] like Figure 3-5 As shown, a positioning rod 3011 is provided at the center of the cross protrusion 301, and a positioning hole 4011 is provided at the center of the cross groove 401. The positioning hole 4011 is set in a conical shape. The positioning rod 3011 is inserted into the positioning hole 4011. When engaging, the positioning rod will first be inserted into the positioning hole. The conical positioning hole facilitates insertion. After insertion, the heating element is rotated until the cross protrusion and the cross groove are engaged.

[0026] like Figure 1-2 As shown, the clamping cover 5 has a hollow structure. One end of the clamping cover 5 extends towards the central axis of the clamping cover with a contact plate 501. The clamping cover 5 has an external thread on its outer side. The clamping cover 5 and the receiving cavity 101 are rotatably connected to the contact plate 501, which contacts the end of the heating tube 2. When the clamping cover rotates, the contact plate approaches the heating tube. After contact, it can press the two ends of the heating tube together with the sealing cover on the other side.

[0027] like Figure 2 As shown, the inner side of the contact plate 501 is covered with a rubber layer 6. The rubber layer contacts the end of the heating element. The rubber layer can protect the end of the heating element and improve the sealing between the contact plate and the heating element to prevent dust from entering.

[0028] like Figure 2 As shown, a rubber ring 7 is provided between the contact plate 501 and the inner wall of the pressing cover 5. The diameter of the rubber ring 7 expands from one side of the contact plate to the other side. When the pressing cover rotates, the built-in rubber ring can gradually squeeze the body of the heating tube until it is pressed tightly. At the same time, the built-in rubber ring can provide a rebound force to ensure that the pressing cover will not rotate and become loose, thus improving stability.

[0029] like Figure 2 As shown, the contact plate 501 has an opening 5011 in the center, and a rubber sleeve 8 is provided at the opening. The connecting wire is placed inside the rubber sleeve, which can effectively prevent the output end from shaking too much and further protect the output end from short circuit or electric shock.

[0030] The working principle of this utility model is explained as follows: When in use, first rotate the sealing cap into one end of the receiving cavity, then insert the heating tube, rotate the heating tube until the cross protrusion and the cross groove are engaged, then rotate the clamping cap to press the end of the heating tube. The wire outlet is led out from the opening of the clamping cap. The rubber ferrule can effectively prevent the wire outlet from shaking and protect the wire outlet.

[0031] The embodiments described above are merely preferred embodiments of the present invention and are not intended to limit the concept and scope of the present invention. Various modifications and improvements made to the technical solutions of the present invention by those skilled in the art without departing from the design concept of the present invention should fall within the protection scope of the present invention. The technical content for which protection is sought in the present invention has been fully described in the claims.

Claims

1. A novel hot-blade assembly for a bag-making machine, characterized in that, The device includes a heatsink body and a built-in heating element. The heatsink body has a through-hole housing, and the heating element is housed within the housing. One end of the heating element has a fixed end with a central fixing hole. A connecting cap is rotatably connected to the fixing hole, and the outer surface of the connecting cap has a cross-shaped protrusion. The other end of the heating element is connected to a cable. The openings at both ends of the housing have internal threads. One end of the housing has a sealing cap with a cross-shaped groove on its inner side, which engages with the cross-shaped protrusion. The other end of the housing has a clamping cap, which is rotatably connected to the opening of the housing to clamp the end of the heating element.

2. The novel hot-blade assembly for a bag-making machine according to claim 1, characterized in that, The center of the cross protrusion is provided with a positioning rod, and the center of the cross groove is provided with a positioning hole. The positioning hole is set in a conical shape, and the positioning rod is inserted into the positioning hole.

3. The novel hot-blade assembly for a bag-making machine according to claim 1, characterized in that, The clamping cover has a hollow structure. One end of the clamping cover extends towards the central axis of the clamping cover with an abutment plate. The outer side of the clamping cover is provided with external threads. The clamping cover and the receiving cavity are rotatably connected to the abutment plate and the end of the heating tube.

4. The novel hot-blade assembly for a bag-making machine according to claim 3, characterized in that, The inner side of the contact plate is covered with a rubber layer, which abuts against the end of the heating element.

5. A novel hot-blade assembly for a bag-making machine according to claim 3, characterized in that, A rubber ring is provided between the contact plate and the inner wall of the pressing cover, and the diameter of the rubber ring increases from one side of the contact plate to the other side.

6. A novel hot-blade assembly for a bag-making machine according to claim 3, characterized in that, The contact plate has an opening at its center, and a rubber sleeve is provided at the opening. The connecting wire is placed inside the rubber sleeve.

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