Reciprocating type tool apron structure

Abstract

The utility model provides a reciprocating type tool apron structure, which belongs to the field of packaging and sealing equipment and comprises a fixed base plate, a front-back moving component and a tool apron component driven by the front-back moving component to slide front and back are mounted on the fixed base plate, the tool apron component comprises an upper tool apron, a lower tool apron and a closing component, the lower tool apron is positioned under the upper tool apron, and the closing component is positioned under the lower tool apron. The closing assembly drives the upper tool apron and the lower tool apron to be close to or far away from each other, the upper tool apron and the lower tool apron are linear tool aprons, and the front-back moving assembly capable of driving the tool apron assembly to move front and back is matched, so that the front-back position of the tool apron assembly can be adjusted in the press-fit heat-sealing process, and the tool apron assembly can be closer to a packaged object; a sealing line closer to a packaging object is formed, and the front-back compactness of the packaging bag is effectively improved.

Description

Technical Field

[0001] The utility model belongs to the field of packaging sealing equipment, and particularly relates to a reciprocating tool holder structure for a horizontal sealing structure of a heat shrinkable film. Background Art

[0002] The horizontal sealing structure of the heat shrinkable film is a heat sealing structure for sealing the heat shrinkable film. This structure melts and tightly combines two or more layers of materials of the heat shrinkable film at a specific position through high temperature to form a continuous and firm sealing line.

[0003] Most of the existing horizontal sealing structures of heat shrinkable films use wheel cutting tool holders as the horizontal sealing structure. The flexibility of this structure is insufficient. The wheel cutting tool holders are mostly fixedly connected and cannot be adjusted forward and backward, resulting in insufficient front-back compactness of the formed sealed packaging bags and affecting the packaging effect. Summary of the Utility Model

[0004] Based on the above problems in the prior art, the utility model provides a reciprocating tool holder structure, which includes a fixed base plate. A front-back moving component is installed on the fixed base plate, and a tool holder component that slides back and forth driven by the front-back moving component. The tool holder component includes an upper tool holder, a lower tool holder, and a closing component. The lower tool holder is directly below the upper tool holder. The closing component drives the upper tool holder and the lower tool holder to approach or move away from each other. Both the upper tool holder and the lower tool holder are linear tool holders.

[0005] Among them, the front-back moving component includes a front-back moving motor fixedly installed on the fixed base plate. One end of a front-back swing rod is fixedly installed at the power output end of the front-back moving motor. The other end of the front-back swing rod is rotatably installed with one end of a front-back connecting rod. The other end of the front-back connecting rod is rotatably connected to the sliding seat of the tool holder component. The fixed base plate is also fixedly installed with a front-back extending front-back optical axis. The sliding seat is slidably installed on the front-back optical axis.

[0006] Among them, the tool holder component includes a sliding seat. A closing motor is fixedly installed on the sliding seat. The power output end of the closing motor is fixedly installed with a closing swing rod. One end of the closing swing rod is rotatably installed with one end of a first closing connecting rod. The other end of the first closing connecting rod is rotatably connected to the lower tool holder. The lower tool holder is slidably connected to the upper and lower optical axes. The upper tool holder is fixedly installed at the top of the upper and lower optical axes.

[0007] Among them, a fixed bottom plate is fixedly installed at the bottom of the upper and lower optical axes. An upper and lower sliding block is fixedly installed on the sliding seat. The sliding seat is slidably installed on the upper and lower optical axes through the upper and lower sliding blocks. The other end of the closing swing rod is rotatably installed with one end of a second closing connecting rod. The other end of the second closing connecting rod is rotatably connected to the fixed bottom plate.

[0008] Among them, a first knife storage groove is arranged in the upper knife seat, a toothed knife is installed in the first knife storage groove and slides up and down, a second knife storage groove that is matched and inserted with the toothed knife is arranged in the lower knife seat, and a toothed knife cylinder for driving the toothed knife to slide up and down is further arranged on the upper knife seat.

[0009] Among them, the front and rear connecting rods, the first closing connecting rod and the second closing connecting rod are all crank connecting rods. The design of the crank connecting rod can offset the lateral displacement generated during the arc swing of the connecting rod, making the sliding of the corresponding structure smoother.

[0010] The beneficial effects of the present utility model are as follows:

[0011] 1. Both the upper knife seat and the lower knife seat are straight knife seats. Cooperating with the front and rear moving components that can drive the knife seat assembly to move back and forth, it can adjust the front and rear positions of the knife seat assembly during the pressing and heat sealing process, enabling the knife seat assembly to be closer to the packaging object, forming a sealing line closer to the packaging object, and effectively improving the front and rear compactness of the packaging bag.

[0012] 2. The design of the straight knife seat cooperates with the toothed knife, and combined with the method of upper and lower pressing and heat sealing, the transverse sealing structure can be compatible with more packaging films of different materials. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] Figure 1 It is a three-dimensional structural schematic diagram of a reciprocating knife seat structure.

[0014] Figure 2 It is a three-dimensional structural schematic diagram of a reciprocating knife seat structure from another angle.

[0015] Figure 3 It is an enlarged structural schematic diagram of the upper knife seat.

[0016] Figure 4 It is an enlarged structural schematic diagram of the upper knife seat with the upper knife seat hidden.

[0017] Figure 5 It is a schematic diagram of the cooperation between the closing assembly and the lower knife seat. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0018] The following describes the present utility model in detail with reference to the drawings and specific embodiments.

[0019] As shown in the atta Figures 1-5A reciprocating tool holder structure as shown includes a fixed base plate 1. The fixed base plate 1 is rectangular, and a set of mounting holes 2 for fixedly installing other structures are provided at each of the four top corners on the peripheral side. Other required structures can be fixedly installed at the corresponding positions of the fixed base plate 1 through fixing structures such as bolts, nuts or rivets. A front-back moving component is installed on the fixed base plate 1, and a tool holder component that slides back and forth driven by the front-back moving component. The front-back moving component includes a front-back moving motor 3 fixedly installed on the lower surface of the fixed base plate 1. The power output end of the front-back moving motor 3 passes through the fixed base plate 1 and fixedly installs one end of a front-back swing rod 4 above the fixed base plate 1. The other end of the front-back swing rod 4 rotatably installs one end of a front-back connecting rod 5. The other end of the front-back connecting rod 5 is rotatably connected to the sliding seat 6 of the tool holder component. Two parallel and front-back extending front-back optical axes 7 are also fixedly installed on the upper surface of the fixed base plate 1. The sliding seat 6 is simultaneously slidably installed on the two front-back optical axes 7, and the tool holder component is driven to slide back and forth by the transmission of the front-back moving motor 3 through the front-back swing rod 4 and the front-back connecting rod 5.

[0020] The tool rest assembly includes a sliding seat 6 composed of a mounting plate 8 and a U-shaped arm 9 mounted on the mounting plate 8, an upper tool rest 15, a lower tool rest 13, and a closing assembly. The front and rear connecting rods 5 are rotatably connected to the side surface of the U-shaped arm 9. Two linear bearings are respectively mounted on the mounting plate 8 corresponding to two front and rear optical axes 7. The sliding seat 6 is slidably connected to the front and rear optical axes 7 through the linear bearings. A closing motor 10 is fixedly mounted on the sliding seat 6. A closing swing rod 11 is fixedly mounted at the power output end of the closing motor 10. One end of the closing swing rod 11 is rotatably mounted with one end of a first closing connecting rod 12. The other end of the first closing connecting rod 12 is rotatably connected to the lower tool rest 13. Both ends of the lower tool rest 13 are respectively slidably connected to an up-and-down extending up-and-down optical axis 14 through two linear bearings. The two up-and-down optical axes 14 are parallel to each other. The upper tool rest 15 is fixedly mounted on the tops of the two up-and-down optical axes 14 so that the lower tool rest 13 is located directly below the upper tool rest 15. The bottoms of the two up-and-down optical axes 14 are fixedly mounted with the same fixed bottom plate 16. The two up-and-down optical axes 14 are fixedly mounted on the packaging production line through the fixed bottom plate 16 and serve as a part of the packaging production line. Four up-and-down sliding blocks 17 are also fixedly mounted on the mounting plate 8 of the sliding seat 6. Two of the up-and-down sliding blocks 17 are arranged vertically on one side of the mounting plate 8 and correspond to one up-and-down optical axis 14. The other two up-and-down sliding blocks 17 are arranged vertically on the other side of the mounting plate 8 and correspond to the other up-and-down optical axis 14. The sliding seat 6 is slidably mounted on the two up-and-down optical axes 14 through the four up-and-down sliding blocks 17. The other end of the closing swing rod 11 is rotatably mounted with one end of a second closing connecting rod 18. The other end of the second closing connecting rod 18 is rotatably connected to the fixed bottom plate 16. The closing motor 10, the closing swing rod 11, the first closing connecting rod 12, and the second closing connecting rod 18 form a closing assembly. The closing motor 10 drives the upper tool rest 15 and the lower tool rest 13 to approach or separate from each other through the cooperation of the closing swing rod 11, the first closing connecting rod 12, the second closing connecting rod 18, and the fixed bottom plate 16. Both the upper tool rest 15 and the lower tool rest 13 are linear tool rests.

[0021] As a preferred embodiment, a first tool storage groove 19 is provided in the upper tool rest 15. A toothed tool 20 is slidably mounted up and down in the first tool storage groove 19. A second tool storage groove 21 that is matched and inserted with the toothed tool 20 is provided in the lower tool rest 13. A toothed tool cylinder 22 for driving the toothed tool 20 to slide up and down is also provided on the upper tool rest 15; the front and rear connecting rods 5, the first closing connecting rod 12, and the second closing connecting rod 18 are all crank arms.

[0022] The knife seat structure provided in this embodiment serves as a part of the packaging production line and functions as a transverse sealing structure to perform hot pressing and transverse sealing on the heat shrinkable film. The open heat shrinkable film bag containing the packaging object is conveyed to one side of the knife seat structure through the conveying structure on the production line. The front and rear movement motor 3 drives the knife seat assembly to approach the packaging object, and then the closing motor 10 is started to drive the lower knife seat 13 to rise and press the heat shrinkable film onto the upper surface of the lower knife seat 13. Finally, the toothed knife cylinder 22 drives the toothed knife 20 to perform heat sealing and cutting on the heat shrinkable film to complete the sealing.

[0023] The above-described embodiments merely represent one implementation mode of the present utility model, and the description thereof is relatively specific and detailed, but it should not be construed as a limitation on the scope of the patent of the present utility model. It should be noted that for those of ordinary skill in the art, without departing from the concept of the present utility model, several modifications and improvements can still be made, and these all belong to the protection scope of the present utility model. Therefore, the protection scope of the patent of the present utility model shall be subject to the appended claims.

Claims

1. A reciprocating tool holder structure, comprising a fixed base plate (1), characterized in that: The fixed base plate (1) is provided with a forward and backward moving component and a knife seat component driven by the forward and backward moving component to slide forward and backward. The knife seat component comprises an upper knife seat (15), a lower knife seat (13) and a closing component. The lower knife seat (13) is located directly below the upper knife seat (15). The closing component drives the upper knife seat (15) and the lower knife seat (13) to move closer to or farther from each other. Both the upper knife seat (15) and the lower knife seat (13) are linear knife seats.

2. A reciprocating knife seat structure according to claim 1, characterized in that: The front-to-back moving assembly comprises a front-to-back moving motor (3) fixedly mounted on a fixed base plate (1); one end of a front-to-back swing rod (4) is fixedly mounted on a power output end of the front-to-back moving motor (3); one end of a front-to-back connecting rod (5) is rotatably mounted on the other end of the front-to-back swing rod (4); the other end of the front-to-back connecting rod (5) is rotatably connected to a sliding seat (6) of the knife seat assembly; the fixed base plate (1) is also fixedly mounted with a front-to-back optical axis (7) extending forward and backward; the sliding seat (6) is slidably mounted on the front-to-back optical axis (7).

3. A reciprocating knife seat structure according to claim 2, characterized in that: The knife seat assembly comprises a sliding seat (6), a closing motor (10) is fixedly mounted on the sliding seat (6), a closing rocker arm (11) is fixedly mounted on the power output end of the closing motor (10), one end of the closing rocker arm (11) is rotatably mounted with one end of a first closing link (12), the other end of the first closing link (12) is rotatably connected to a lower knife seat (13), the lower knife seat (13) is slidably connected to an upper and lower optical axis (14), and the upper knife seat (15) is fixedly mounted on the top of the upper and lower optical axis (14).

4. The reciprocating knife seat structure according to claim 3, characterized in that: A fixed bottom plate (16) is fixedly installed at the bottom of the upper and lower optical axes (14), and an upper and lower sliding block (17) is fixedly installed on the sliding seat (6). The sliding seat (6) is installed to the upper and lower optical axes (14) by sliding up and down through the upper and lower sliding blocks (17). The other end of the closing rocker arm (11) is rotatably installed with one end of a second closing link (18), and the other end of the second closing link (18) is rotatably connected to the fixed bottom plate (16).

5. The reciprocating knife seat structure according to claim 4, characterized in that: The upper knife seat (15) is provided with a first knife storage groove (19), in which a toothed knife (20) is installed to slide up and down, and the lower knife seat (13) is provided with a second knife storage groove (21) which matches and inserts the toothed knife (20), and the upper knife seat (15) is also provided with a toothed knife cylinder (22) for driving the toothed knife (20) to slide up and down.

6. The reciprocating knife seat structure according to claim 5, characterized in that: The front and rear links (5), the first closing link (12) and the second closing link (18) are all crank links.

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