Electric heating cutter mechanism of packaging machine

Abstract

An electric heating cutter mechanism of a packaging machine comprises a machine frame, a driving mechanism and a cutter assembly, the driving mechanism comprises an air cylinder and a stroke frame, a piston rod of the air cylinder is connected with the stroke frame, the lower portion of the stroke frame is connected with the cutter assembly, and the stroke frame and the cutter assembly are arranged in parallel. The cutter assembly comprises a cutter holder, a cutter holder clamping plate and an electrotome, the top of the cutter holder is connected with the stroke frame through a fixing bolt, the cutter holder clamping plate is arranged on the lower middle portion of the cutter holder, the electrotome is clamped between the cutter holder and the cutter holder clamping plate, and the electrotome downwards extends out of the surfaces of the cutter holder and the cutter holder clamping plate. According to the electric heating cutter mechanism, the driving mechanism drives the cutter assembly to conduct thermal fusing on the packaging film, the cutter assembly composed of the cutter holder, the cutter holder clamping plate and the electric cutter clamped between the cutter holder clamping plate and the cutter holder clamping plate is of a split structure, the electric cutter is easy and convenient to replace, and the operation cost is reduced.

Description

Technical Field

[0001] This utility model relates to the field of packaging equipment technology, and in particular to a packaging machine with an automatic label paper suction and dispensing mechanism. Background Technology

[0002] Packaging machines use plastic film to wrap around the product to be packaged. The packaging process involves first placing a plastic film printed with product information over the product, then cutting the film with an electric heating cutter. The product is then transported to the next heat-sealing process. Some heat-sealing cutters use metal wire, such as the one described in patent application number 201920170634, titled "Tape Packaging Machine and Its Cutting Blade Structure." This cutter includes a blade holder, a heating wire attached to one side of the blade holder and connected to a power source, and a drive unit. During heat sealing, the heating wire is pressed against the packaging film, and then electricity is applied to melt and cut the film. However, due to the unevenness at the melted point, this method has been gradually phased out. Currently, metal blades are used instead of metal wires. These electric heating cutters are mostly integrated structures. Because the cutter is constantly exposed to high temperatures, the blade head is easily damaged, resulting in an uneven seal. Furthermore, replacing the entire cutter not only incurs high operating costs, but also wastes the entire machine when only the blade head is damaged. Utility Model Content

[0003] The technical problem to be solved by this utility model is to overcome the defects of the existing technology and provide an electrothermal cutting mechanism for a packaging machine. The cutting assembly is driven by a drive mechanism to thermally melt and cut the packaging film. The cutting assembly, which consists of a blade holder, a blade holder clamping plate and an electric blade held in the middle, is a split structure. Replacing the electric blade is simple and convenient and reduces operating costs.

[0004] To achieve the above objectives, the present invention adopts the following technical solution:

[0005] An electrothermal cutting mechanism for a packaging machine includes a frame, a drive mechanism, and a cutting assembly. The drive mechanism includes a cylinder and a stroke frame. The piston rod of the cylinder is connected to the stroke frame, and the lower part of the stroke frame is connected to the cutting assembly. The stroke frame and the cutting assembly are arranged in parallel. The cutting assembly includes a blade holder, a blade holder clamping plate, and an electric knife. The top of the blade holder is connected to the stroke frame by fixing bolts. The blade holder clamping plate is provided in the lower middle part of the blade holder. The electric knife is clamped between the blade holder and the blade holder clamping plate and extends downward beyond the surface of the blade holder and the blade holder clamping plate.

[0006] In the electric heating cutting mechanism of the above-mentioned packaging machine, a horizontal support frame is provided on the upper part of the frame, and a cylinder is located in the middle of the support frame. The piston rod of the cylinder extends downward and the end of the piston rod is connected to the stroke frame.

[0007] The electric heating cutter mechanism of the above-mentioned packaging machine has vertical guide rails on both sides of the frame, and the two ends of the stroke frame are respectively sleeved on the guide rails; the cylinder drives the stroke frame and the cutter assembly to move up and down along the guide rails.

[0008] The electric heating cutter mechanism of the above-mentioned packaging machine further includes a cutter guard plate, which is sleeved on the outside of the cutter holder and the cutter holder clamping plate. The cutter guard plate consists of two parallel side plates with the lower part of the side plates bent inward. A top plate is provided on the top of the side plates to connect the two side plates into a whole. A spring connector is provided on the top plate of the cutter guard plate, which connects the cutter guard plate to the stroke frame.

[0009] In the electric heating cutting mechanism of the above-mentioned packaging machine, the blade holder and the blade holder clamp are both long strips and are bolted together as a whole; the lower part of the blade holder has a through hole along the axial direction, and a heating rod is installed in the through hole. The heating rod is connected to the power supply, and the heating rod is parallel to and abuts against the electric knife.

[0010] The electric heating cutter mechanism of the above-mentioned packaging machine has several heat dissipation holes on the side plate of the blade guard plate.

[0011] The cutting assembly of this utility model adopts a split structure. During use, the electric cutter is held by the cutter holder and cutter holder clamp. When the electric cutter is damaged, the cutter holder clamp can be opened to remove the electric cutter for replacement. Cutter replacement is convenient, and the consumables for a single electric cutter are inexpensive, reducing the operating cost of the packaging machine and avoiding the high operating costs associated with replacing the entire cutting assembly. A blade guard plate is fitted onto the outside of the cutter holder and cutter holder clamp. The blade guard plate has heat dissipation holes, preventing operator contact and accidental injury without affecting the heat dissipation of the electric cutter, thus increasing safety. Attached Figure Description

[0012] Figure 1 This is a structural diagram of a packaging machine;

[0013] Figure 2 This is a front view of the present invention;

[0014] Figure 3 yes Figure 2 AA section view;

[0015] Figure 4 This is a schematic diagram of the cutting blade assembly of this utility model;

[0016] Figure 5 This is a partial enlarged view of the tool holder and tool holder clamp of this utility model.

[0017] The list of components in the diagram is as follows: 1. Frame, 2. Support frame, 3. Cylinder, 4. Piston rod, 5. Stroke frame, 6. Guide rail, 7. Platform, 8. Cutter assembly, 9. Cutter holder, 10. Cutter holder clamp, 11. Electric knife, 12. Heating rod, 13. Fixing screw, 14. Cutter guard plate, 15. Pad plate, 16. Spring connector. Detailed Implementation

[0018] The present invention will be further described below with reference to the accompanying drawings.

[0019] like Figure 1 , Figure 2 As shown, this utility model includes a frame 1, a drive mechanism, a cutter assembly 8, and a controller. A horizontal support frame 2 is provided on the upper part of the frame, and a platform 7 is provided in the middle of the frame for placing products to be packaged. The drive mechanism includes a cylinder 3, a stroke frame 5, and guide rails 6. The cylinder 3 is located in the middle of the support frame, and its piston rod 4 extends downwards, with the end of the piston rod connected to the stroke frame 5. Vertical guide rails 6 are provided on both sides of the frame, positioned between the support frame and the platform. The stroke frame 5 is fitted onto the guide rails 6 at both ends, and the cutter assembly 8 is fixedly connected to the lower part of the stroke frame 5. The stroke frame and the cutter assembly are arranged parallel to each other. The cylinder 3 drives the piston rod to reciprocate, causing the stroke frame 5 and the cutter assembly 8 to move up and down along the guide rails 6. A pad 15 is provided on the platform 7, its position corresponding to the cutter assembly. The pad is made of a high-temperature resistant material.

[0020] like Figure 3 , Figure 5 As shown, the cutting assembly 8 includes a blade holder 9, a blade holder clamping plate 10, an electric knife 11, and a blade guard plate 14. The blade holder clamping plate 10 is located in the lower part of the blade holder 9, and the two are shaped correspondingly and are bolted together. After the blade holder 9 and the blade holder clamping plate 10 are assembled, they are elongated, with the lower part bent inward to the center line of the two. The electric knife 11 is clamped between the blade holder clamping plate and the blade holder, and the electric knife extends downward beyond the lower surface of the blade holder 9 and the blade holder clamping plate 10. The top of the blade holder 9 is fixedly connected to the travel frame 5 by fixing bolts 13. The lower part of the blade holder has a through hole along the axial direction, and a heating rod 12 is installed in the through hole. The heating rod is connected to a power source, and is parallel to and abuts against the electric knife. The heating rod with current flowing through it heats up, and the heat is transferred to the electric knife.

[0021] like Figure 3 , Figure 4 As shown, the blade guard 14 consists of two parallel side plates. The lower part of the side plates is bent inward, and a top plate is provided on the top of the side plates to connect the two side plates into a whole. Several heat dissipation holes are opened on the side plates. The blade guard 14 is sleeved on the outside of the blade holder 9 and the blade holder clamp 10 to protect the operator from contact with the high temperature of the blade holder and the electric knife. A spring connector 16 is provided on the top plate of the blade guard 14, and the blade guard is connected to the stroke frame 5 through the spring connector 16. When the cutter assembly 8 is working, the cylinder drives the stroke frame 5 and the cutter assembly 8 to move downward. When it approaches the item to be packaged, the blade guard first contacts the pad 15 on the platform. The blade holder and the blade holder clamp continue to move downward. At this time, the spring contracts, and the blade guard abuts against the pad and stops moving. The blade holder moves downward until the electric knife contacts the packaging film and cuts it. After cutting, the cylinder drives the travel frame and the cutter assembly to move upward. The electric knife first leaves the pad, the spring extends, and the blade guard then leaves the stage. The cylinder drives the cutter and the travel frame to reciprocate between the standby position and the cutting position.

[0022] The controller is connected to the power switch of the cylinder stroke and the heating rod, respectively, to control the reciprocating motion of the cylinder and the electric knife and the heat sealing temperature of the electric knife.

[0023] The working process of this utility model is further explained below:

[0024] When the power is turned on, the heating element heats up, which is then conducted to the electric knife until the preset temperature is reached, and the packaging machine starts operating. The controller controls the packaging film to travel a certain distance, and the ejection mechanism pushes the prepared product onto the packaging film. The controller controls the cylinder to move downwards, driving the cutter assembly and travel frame from the standby position to the film cutting position, where the electric knife blade contacts and melts the packaging film. After cutting, the controller controls the cylinder to move upwards, driving the cutter assembly and travel frame from the film cutting position back to the standby position, completing the heat sealing process of the packaging film by the electric knife. If the electric knife is damaged due to prolonged use, remove the fixing bolts to separate the blade holder from the travel frame, remove the bolts connecting the blade holder and the blade holder clamp, remove the old electric knife and replace it with a new one, install the bolts to fix the blade holder and blade holder clamp, and install the fixing bolts to place the blade holder under the travel frame, thus completing the replacement of the old electric knife.

Claims

1. An electrically heated knife mechanism of a packaging machine, characterized in that It includes frame (1), driving mechanism and cutter assembly (8), the driving mechanism includes cylinder (3) and stroke frame (5), the piston rod of cylinder is connected with stroke frame, the lower part of stroke frame (5) is connected with cutter assembly (8), and stroke frame is arranged in parallel with cutter assembly;The cutter assembly (8) includes knife holder (9), knife holder clamping plate (10) and electric knife (11), the top of the knife holder (9) is connected with stroke frame (5) by fixed bolt (13), the lower part of the knife holder (9) is provided with knife holder clamping plate (10), the electric knife (11) is clamped in the middle of the knife holder and the knife holder clamping plate, and the electric knife extends out of the surface of the knife holder and the knife holder clamping plate downwards.

2. The electrothermal cutting knife mechanism of a packaging machine according to claim 1, characterized in that, The upper part of the frame is provided with transverse support frame (2), the cylinder (3) is arranged in the middle of the support frame, the piston rod (4) of the cylinder extends downwards, and the end of the piston rod is connected with the stroke frame (5).

3. The electrothermal cutting knife mechanism of a packaging machine according to claim 2, characterized in that, The both sides of the frame are respectively provided with vertical guide rails (6), and the both ends of the stroke frame (5) are respectively sleeved on the guide rails (6);The cylinder (3) drives the stroke frame (5) and the cutter assembly (8) to move up and down along the guide rail (6).

4. The electrothermal cutting knife mechanism of a packaging machine according to claim 3, characterized in that, The cutter assembly (8) further includes a knife guard plate (14), which is sleeved outside the knife holder (9) and the knife holder clamping plate (10);The knife guard plate (14) is two parallel side plates, the lower part of the side plate is inwardly bent, the top of the side plate is provided with a top plate to connect the two side plates into a whole, and a spring connecting piece (16) is arranged on the top plate of the knife guard plate.

5. The electrothermal cutting knife mechanism of a packaging machine according to claim 4, characterized in that, The knife holder (9) and the knife holder clamping plate (10) are both long strip-shaped and are combined into a whole by bolts;The lower part of the knife holder is axially provided with a through hole, a heating rod (12) is arranged in the through hole, the heating rod is connected to the power supply, and the heating rod is parallel to the electric knife and abuts.

6. The electrothermal cutting knife mechanism of a packaging machine according to claim 5, characterized in that A plurality of heat dissipation holes are formed in the side plate of the knife guard plate.

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