Heat sealing head for suspension type glue bottle sealing film

Abstract

The utility model discloses a suspension type heat sealing head for a glue bottle sealing film, which comprises an inserting rod, an annular heating body and a sealing film adsorption head, the annular heating body is arranged at the top end of the inserting rod, the sealing film adsorption head is supported at the center of the top end of the inserting rod through a spring, and when the sealing film adsorption head is in a suspension state, the sealing film adsorption head adsorbs the sealing film. And the top surface of the heating element is higher than the top surface of the annular heating element. According to the heat sealing head for the suspension type glue bottle sealing film, the sealing film adsorption head is in a suspension state in a normal state, when the sealing film is adsorbed on the sealing film adsorption head, the sealing film and the annular heating body are separated by a certain distance, the situation that the glue bottle is not arranged outside the insertion rod in a sleeving mode and makes contact with the heating body when the glue bottle is pressed downwards is avoided, and therefore the situation that the sealing film is heated by mistake does not exist.

Description

Technical Field

[0001] The utility model relates to the technical field of film sealing machines, in particular to a heat sealing head for a suspended type plastic bottle sealing film. Background Art

[0002] Chinese patent number CN202322459448.7 disclosed on April 2, 2024 a heating module for sealing a plastic bottle, including a heat sealing head, the heat sealing head including an insertion rod and an annular heating element, the annular heating element is arranged at the top of the insertion rod, and the top of the insertion rod is also provided with a sealing film fixing position; this heating module is suitable for the fully automatic film sealing equipment of the plastic bottle, and can position and fix the sealing film, so that the sealing film can be transferred between the processing stations of the automatic film sealing equipment, and can heat the fixed sealing film, and complete the film sealing by hot melting. However, since the heating module generally works continuously for a long time (within a work shift) in actual application, the annular heating element is in a high temperature state. When the plastic bottle is not covered outside the heat sealing head, the sealing film is not suitable for contact with the annular heating element, otherwise it is easy to cause the sealing film to begin to melt before it contacts the inner top surface of the plastic bottle, so that it deforms and leaks glue and cannot be fully sealed and fitted with the plastic bottle. Therefore, it is necessary to improve the heat sealing head. Utility Model Content

[0003] The utility model aims to provide a heat sealing head for a suspension type plastic bottle sealing film which has a reasonable structure and can avoid accidental heating of the sealing film.

[0004] The purpose of the utility model is achieved in this way:

[0005] A suspended heat sealing head for a plastic bottle sealing film comprises an insertion rod and an annular heating element, wherein the annular heating element is arranged at the top end of the insertion rod, and further comprises a sealing film adsorption head, wherein the sealing film adsorption head is supported at the top center of the insertion rod through a spring, and when the sealing film adsorption head is in a suspended state, the height of its top surface is higher than the height of the top surface of the annular heating element.

[0006] The purpose of the utility model can also be solved by the following technical measures:

[0007] As a more specific solution, a concave cavity is provided at the center of the top end of the insertion rod, the sealing film adsorption head is arranged in the concave cavity, and the spring is connected between the bottom of the sealing film adsorption head and the bottom of the concave cavity.

[0008] As a further solution, the sealing film adsorption head is provided with an air suction port, the upper end of the air suction port leads to the top surface of the sealing film adsorption head, and the air suction port is connected to the negative pressure air circuit.

[0009] As a further solution, the air inlet is arranged at the center of the sealing film suction head, and a exhaust pipe is connected to the lower end of the air inlet. The exhaust pipe is slidably engaged with the interior of the plug rod and extends outside the plug rod to be connected with the negative pressure air path.

[0010] As a further solution, the plug rod is arranged on the turntable and distributed around the center of the turntable. A rotary air distributor and a rotary electrical distributor are arranged at the center of the turntable. The negative pressure air path is located outside the turntable and is communicated with the air inlet of the sealing film suction head through the rotary air distributor. The annular heating element is electrically connected to the external control circuit through the rotary electrical distributor.

[0011] As a further solution, the rotary electrical distributor and the rotary air distributor are respectively arranged up and down on the turntable.

[0012] As a further solution, the rotary air distributor is connected to the negative pressure air path through a three-way solenoid valve, and one port of the three-way solenoid valve is communicated with the atmosphere.

[0013] As a further solution, an elastic member is further arranged between the annular heating element and the top surface of the plug rod.

[0014] The beneficial effects of the present utility model are as follows:

[0015] Under normal conditions, the sealing film suction head of the heat sealer for the suspension type plastic bottle sealing film is in a suspended state. When the sealing film is adsorbed on it, there is a certain distance between the sealing film and the annular heating element, avoiding the contact between the sealing film and the heating element when the plastic bottle is not sleeved outside the plug rod and pressed down. Therefore, there is no situation of misheating the sealing film. Description of the Drawings

[0016] Figure 1 It is a schematic structural diagram of the first embodiment of the present utility model.

[0017] Figure 2 It is a schematic structural diagram of the heat sealer in the present utility model.

[0018] Figure 3 It is Figure 2 A partial structural schematic diagram of another working state.

[0019] Figure 4 It is a schematic top view structural diagram of the heat sealer in the present utility model.

[0020] Figure 5 It is a schematic structural diagram of another embodiment of the heat sealer in the present utility model. Detailed Embodiment

[0021] The present utility model will be further described below in conjunction with the drawings and embodiments:

[0022] Refer toFigures 1 to 4 As shown, a suspended heat sealing head 10 for a plastic bottle sealing film includes an insertion rod 4 and an annular heating element 5, wherein the annular heating element 5 is arranged at the top end of the insertion rod 4, and also includes a sealing film adsorption head 6, which is supported at the top center of the insertion rod 4 through a spring 7. When the sealing film adsorption head 6 is in a suspended state, the height of its top surface is higher than the top surface height of the annular heating element 5.

[0023] A concave cavity 42 is provided at the center of the top end of the insertion rod 4 , the sealing film adsorption head 6 is arranged in the concave cavity 42 , and the spring 7 is connected between the bottom of the sealing film adsorption head 6 and the bottom 41 of the concave cavity 42 .

[0024] The sealing film adsorption head 6 is provided with an air inlet 61 , the upper end of the air inlet 61 leads to the top surface of the sealing film adsorption head 6 , and the air inlet 61 is connected to the negative pressure air circuit.

[0025] The air inlet 61 is arranged at the center of the sealing film adsorption head 6, and the lower end of the air inlet 61 is connected to an exhaust pipe 8, which is slidably matched with the inside of the insertion rod 4 and extends out of the outside of the insertion rod 4 to be connected to the negative pressure air path.

[0026] The insert rods 4 are arranged on the turntable 1 and distributed around the center of the turntable 1. A rotary air distribution joint 3 and a rotary power distribution joint 2 are arranged at the center of the turntable 1. The negative pressure gas path is located outside the turntable 1 and communicates with the air inlet 61 of the sealing film adsorption head 6 through the rotary air distribution joint 3. The annular heating element 5 is electrically connected to the external control circuit through the rotary power distribution joint 2. More than two insert rods 4 are arranged and are evenly distributed around the center of the turntable 1.

[0027] The rotary power distribution joint 2 (conductive ring) and the rotary gas distribution joint 3 are respectively arranged on the upper and lower sides of the turntable 1. The rotary power distribution joint 2 and the rotary gas distribution joint 3 belong to the prior art and are not described in detail here. By distributing them on the upper and lower sides of the turntable 1, installation is more convenient. A rotating shaft 11 is provided in the center of the turntable, and the rotating shaft passes through the center of the rotary power distribution joint 2.

[0028] The rotary air-dividing joint 3 is connected to the negative pressure air circuit through a three-way solenoid valve, and one of the ports of the three-way solenoid valve is connected to the atmosphere, which is not shown in the figure. When the rotary air-dividing joint 3 is connected to the negative pressure air circuit through the three-way solenoid valve, it is not connected to the atmosphere, so that the air intake port 61 generates negative pressure, which can absorb the sealing film. When the sealing film needs to be separated from the sealing film adsorption head 6, the rotary air-dividing joint 3 is connected to the atmosphere through the three-way solenoid valve and is not connected to the negative pressure air circuit.

[0029] See also Figure 5 As shown, an elastic member 9 (such as silica gel) is further provided between the annular heating element 5 and the top surface of the insertion rod 4, so that the annular heating element 5 has a certain buffering effect to avoid damage due to impact.

[0030] Its working principle is as follows: Place the sealing film on the sealing film suction head 6, then put the glue bottle on the outer sleeve of the hot sealing head 10, start the annular heating element 5, press down the glue bottle so that the acting force on the inner top surface of the glue bottle falls on the sealing film suction head 6, and drive the sealing film and the sealing film suction head 6 to descend until the sealing film is pressed between the inner top surface of the glue bottle and the top surface of the annular heating element 5, that is, the hot melt connection between the sealing film and the inner top surface of the glue bottle is completed.

[0031] The above is the preferred solution of the present invention, which shows and describes the basic principle, main features and advantages of the present invention. Those skilled in the art should understand that the present invention is not limited by the above embodiments. What is described in the above embodiments and the specification only illustrates the principle of the present invention. Without departing from the spirit and scope of the present invention, the present invention will have various changes and improvements, and these changes and improvements all fall within the scope of the present invention claimed. The scope of protection claimed by the present invention is defined by the appended claims and their equivalents.

Claims

1. A hot head for a suspension type glue bottle sealing film, comprising an insertion rod and an annular heating element, the annular heating element is arranged at the top of the insertion rod, and is characterized in that : It further includes a sealing film suction head. The sealing film suction head is received at the center of the top end of the insertion rod through a spring. When the sealing film suction head is in a suspended state, the height of its top surface is higher than the height of the top surface of the annular heating element.

2. The hot head for the suspension glue bottle sealing film according to claim 1, characterized in that: A concave cavity is provided at the center of the top end of the insertion rod. The sealing film suction head is arranged in the concave cavity, and the spring is connected between the bottom of the sealing film suction head and the bottom of the concave cavity.

3. The hot head for the floating glue bottle sealing film according to claim 1, characterized in that: The sealing film suction head is provided with an air suction port. The upper end of the air suction port leads to the top surface of the sealing film suction head, and the air suction port is connected to a negative pressure air path.

4. The hot head for the floating glue bottle sealing film according to claim 3, characterized in that: The air suction port is arranged at the center of the sealing film suction head. A discharge pipe is connected to the lower end of the air suction port. The discharge pipe is in sliding fit with the inside of the insertion rod and extends outside the insertion rod to be connected to the negative pressure air path.

5. The hot head for the suspension type glue bottle sealing film according to claim 3 or 4, characterized in that: The insertion rod is arranged on the turntable and distributed around the center of the turntable. A rotary air distributor and a rotary electrical distributor are provided at the center of the turntable. The negative pressure air path is located outside the turntable and is communicated with the air suction port of the sealing film suction head through the rotary air distributor. The annular heating element is electrically connected to an external control circuit through the rotary electrical distributor.

6. The hot head for the floating glue bottle sealing film according to claim 5, characterized in that: The rotary electrical distributor and the rotary air distributor are respectively arranged up and down on the turntable.

7. The hot head for the floating glue bottle sealing film according to claim 5, characterized in that: The rotary air distributor is connected to the negative pressure air path through a three-way solenoid valve. One port of the three-way solenoid valve is communicated with the atmosphere.

8. The hot head for the suspension type glue bottle sealing film according to claim 1, characterized in that: An elastic member is further provided between the annular heating element and the top surface of the insertion rod.

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