A longitudinal cutting mechanism for a multi-row strip bag back-seal packaging machine

Abstract

A longitudinal cutting mechanism of a multi-row strip bag back-seal packaging machine includes two supports, and is characterized in that: an upper knife shaft and a lower knife shaft arranged up and down are installed between the two supports, a servo motor is arranged on the outer side of one of the supports, the output end of the servo motor is connected to the lower knife shaft, and the upper knife shaft and the lower knife shaft are connected through a gear pair transmission; a plurality of lower cutters are evenly fixed on the lower cutter shaft, and a conical blade is arranged at one end of the lower cutter; a plurality of upper cutters and limit sleeves are evenly arranged on the upper cutter shaft, and the upper cutters and limit sleeves are arranged alternately, and pressure springs are respectively arranged between the adjacent upper cutters and limit sleeves on the upper cutter shaft, and a conical blade is also arranged at one end of the upper cutter and abuts against the outer end surface of the conical blade of the lower cutter under the action of the pressure spring. It is convenient and stable to use, highly safe, and has no resistance to cutting; the cutting speed is fast, which can meet the punching mechanism at the rear end of the packaging machine to achieve a production speed of more than 60 cuts / minute, which can improve work efficiency, and the packaging material after cutting has no burrs or rough edges.

Description

Technical Field

[0001] The utility model belongs to packaging machinery, in particular to a longitudinal cutting mechanism of a multi-row strip bag back-sealing packaging machine. Background Art

[0002] The multi-row strip bag back-seal packaging machine usually includes an unwinding mechanism, a feeding mechanism, a longitudinal cutting mechanism, a longitudinal sealing mechanism, a transverse sealing mechanism and a punching mechanism, and is widely used in strip bag packaging of various foods or medicines.

[0003] The existing longitudinal cutting mechanism is mainly composed of left and right side plates, a rotating shaft, a hinge seat, a cylinder, a support plate, a film guide roller, and a slitting blade. There are multiple slitting blades that are evenly fixed on a cutter shaft. When the packaging material passes through the longitudinal cutting mechanism, the slitting blade cuts the entire roll film into several narrow strips from the middle, and then the packaging material is led to the longitudinal sealing collar shaping device through the film guide roller. The blade of this structure has a short service life and there is a risk of scratching the operator. In addition, the resistance is large when slitting the packaging material. When working, the punching mechanism at the rear end of the packaging machine can only reach a working frequency of 40 times / minute at the fastest, and the working efficiency is low. Utility Model Content

[0004] The technical problem to be solved by the utility model is to provide a longitudinal cutting mechanism of a multi-row strip bag back-sealing packaging machine which has no resistance in cutting and has a certain traction force on packaging materials and has a fast cutting speed.

[0005] In order to solve the above problems, the utility model adopts the following technical solutions:

[0006] A longitudinal cutting mechanism of a multi-row strip bag back-sealing packaging machine includes two supports, and its special features are: an upper knife shaft and a lower knife shaft arranged up and down are installed between the two supports, a servo motor is arranged on the outer side of one of the supports, the output end of the servo motor is connected to the lower knife shaft, and the upper knife shaft and the lower knife shaft are connected through a gear pair transmission to realize the upper knife shaft and the lower knife shaft rotating towards each other;

[0007] A plurality of lower cutters are evenly fixed on the lower cutter shaft, and a conical blade is provided at one end of the lower cutter; a plurality of upper cutters and limit sleeves are evenly fixed on the upper cutter shaft, and the upper cutters and the limit sleeves are alternately arranged. Pressure springs are respectively provided between adjacent upper cutters and limit sleeves on the upper cutter shaft, and a conical blade is also provided at one end of the upper cutter and abuts against the outer end surface of the conical blade of the lower cutter under the action of the pressure spring.

[0008] As a further preference, the upper cutter is mounted on the upper cutter shaft via a key and can slide axially along the key to achieve circumferential positioning of the upper cutter.

[0009] As a further preference, a notch is provided on the sleeve wall of the limiting sleeve and the limiting sleeve is fixed to the upper knife shaft by a locking screw.

[0010] As a further preference, the support is formed by an upper support and a lower support arranged up and down, which are overlapped with each other through matching stepped surfaces and connected by bolts. The two ends of the upper knife shaft are respectively installed on the upper support through bearings, and the two ends of the lower knife shaft are respectively installed on the lower support through bearings, so as to facilitate disassembly and reduce debugging time.

[0011] As a further preference, two corresponding positioning pins and positioning holes are respectively provided between the lower support and the upper support to facilitate installation and positioning.

[0012] As a further preference, corresponding semicircular grooves are respectively provided on the opposite surfaces of the upper support and the lower support to form a mounting hole, and a bearing seat is inserted into the mounting hole. The bearing seat is sleeved on the lower cutter shaft and fixed to the upper and lower supports by screws, and both ends of the lower cutter shaft are respectively installed in the bearing seat by bearings.

[0013] As a further preference, bases are fixed at the lower ends of the supports, two long shafts are fixed between the two bases on one side of the upper knife shaft and the lower knife shaft, and rotatable guide rollers are respectively installed on the two long shafts for guiding the packaging materials between the upper knife shaft and the lower knife shaft.

[0014] As a further preference, a long shaft is fixed through a shaft seat on the other side of the upper knife shaft and the lower knife shaft between the two supports, and a rotatable lead-out roller is mounted on the long shaft to facilitate the lead-out of the packaging material after longitudinal cutting.

[0015] The beneficial effects of the utility model are:

[0016] 1. Since the upper cutter is also provided with a conical blade at one end and abuts against the outer end surface of the conical blade of the lower cutter under the action of the pressure spring, the packaging material can be cut into several narrow strips through the cooperation of the upper cutter and the lower cutter when passing through the longitudinal cutting mechanism, and then the cut packaging material is led to the collar turning device for shaping through the lead-out roller. It is convenient and stable to use, highly safe, and has no resistance to cutting;

[0017] 2. The cooperation between the upper cutter and the lower cutter can generate a certain traction force on the packaging material, and the slitting speed is fast, which can meet the punching and cutting mechanism at the rear end of the packaging machine to achieve a production speed of more than 60 cuts / minute, which can improve work efficiency, and the packaging material after slitting has no burrs or rough edges. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 It is the front view of the utility model.

[0019] Figure 2 yes Figure 1 Top view of the .

[0020] Figure 3 yes Figure 1 Left view of .

[0021] Figure 4 yes Figure 4 AA section view.

[0022] Figure 5 yes Figure 2 BB cross-sectional view.

[0023] Figure 6 It is a stereogram of the utility model.

[0024] Figure 7 yes Figure 5 A partial enlarged view of .

[0025] In the figure: support 1, motor seat 2, servo motor 3, locating pin 4, gear pair 5, upper knife shaft 6, upper cutter 7, limit sleeve 8, pressure spring 9, lead-out roller 10, lower cutter 11, base 12, long shaft 13, guide roller 14, bearing seat 15, lower knife shaft 16, shaft seat 17. DETAILED DESCRIPTION

[0026] like Figure 1-Figure 7 As shown, the utility model relates to a longitudinal cutting mechanism of a multi-row strip bag back-sealing packaging machine, comprising two supports 1, wherein the support 1 is formed by an upper support 101 and a lower support 102 arranged up and down, overlapping each other through mutually matching stepped surfaces and connected by bolts. Two corresponding positioning pins 4 and positioning holes are respectively arranged between the lower support 102 and the upper support 101 to facilitate installation and positioning.

[0027] An upper cutter shaft 6 and a lower cutter shaft 16 are installed between the two supports 1, and the two ends of the upper cutter shaft 6 are respectively installed on the upper support 101 through bearings, and the two ends of the lower cutter shaft 16 are respectively installed on the lower support 102 through bearings, so as to facilitate disassembly and reduce debugging time. A servo motor 3 is fixedly installed on the outside of one of the supports 1 through a motor base 2, and the output end of the servo motor 3 is connected to one end of the corresponding lower cutter shaft 16 through a coupling. A gear pair 5 is provided between the upper cutter shaft 6 and the lower cutter shaft 16 and is connected through the gear pair 5 for transmission, so as to realize the upper cutter shaft 6 and the lower cutter shaft 16 rotating toward each other.

[0028] Semicircular grooves corresponding to each other are respectively provided on the opposite surfaces of the upper support 101 and the lower support 102 to form a mounting hole, and a bearing seat 15 is inserted into the mounting hole. The bearing seat 15 is sleeved on the lower knife shaft 16 and fixed to the upper and lower supports by screws. Both ends of the lower knife shaft 16 are respectively installed in the bearing seat 15 by bearings.

[0029] A plurality of lower cutters 11 are evenly fixed on the lower cutter shaft 16 by top screws. The lower cutter 11 is in the shape of a circular sleeve and has a conical blade 111 at one end. A plurality of upper cutters 7 and limiting sleeves 8 are evenly distributed on the upper cutter shaft 6. The upper cutters 7 and limiting sleeves 8 are arranged alternately. Pressure springs 9 are respectively provided between adjacent upper cutters 7 and limiting sleeves 8 on the upper cutter shaft 6. The number of upper cutters 7 and lower cutters 11 is equal. A conical blade 701 is also provided at one end of the upper cutter 7 and rests on the outer end surface of the conical blade of the lower cutter 11 under the action of the pressure spring 9.

[0030] The upper cutter 7 is mounted on the upper cutter shaft 6 by a key and can slide along the key axial direction to achieve circumferential positioning of the upper cutter 7. The sleeve wall of the limiting sleeve 8 is provided with a notch and is fixed on the upper cutter shaft 6 by a locking screw.

[0031] A base 12 is fixed at the lower end of the support 1, and two long shafts 13 are fixed between the two bases 12 on one side of the upper knife shaft 6 and the lower knife shaft 16. Rotatable guide rollers 14 are respectively installed on the two long shafts 13 through bearings for guiding the packaging materials between the upper knife shaft 6 and the lower knife shaft 16.

[0032] A long shaft is also fixed through the shaft seat 17 on the other side of the upper knife shaft 6 and the lower knife shaft 16 between the two supports 1, and a rotatable lead-out roller 10 is mounted on the long shaft through a bearing to facilitate the lead-out of the packaging material after longitudinal cutting.

[0033] During operation, the packaging material is introduced into the space between the upper blade shaft 6 and the lower blade shaft 16 along the tangential direction through two guide rollers, and the lower blade shaft 16 is driven to rotate by the servo motor 3, and the upper blade shaft 6 is driven to rotate by the gear pair, thereby driving the upper cutter 7 and the lower cutter 11 to rotate in opposite directions. The tapered blades of the upper cutter 7 and the lower cutter 11 that are pressed against each other by the pressure spring 9 cooperate to cut the packaging material into several narrow strips, and then the cut packaging material is led out through the lead-out roller and led to the front collar turning device for shaping. The cooperation between the upper cutter 7 and the lower cutter 11 not only makes the cutting without resistance, but also can generate a certain traction force on the packaging material, and the cutting speed is fast, which can meet the punching mechanism at the rear end of the packaging machine to achieve a production speed of more than 60 cuts / minute, which can improve work efficiency, and the packaging material after cutting has no burrs or rough edges.

[0034] Although the implementation scheme of the utility model has been disclosed as above, it is not limited to the applications listed in the specification and implementation modes. It can be fully applied to various fields suitable for the utility model. For those familiar with the art, additional modifications can be easily implemented. Therefore, without departing from the general concept defined by the claims and the scope of equivalents, the utility model is not limited to the specific details and the illustrations shown and described herein.

Claims

1. A longitudinal cutting mechanism of a multi-row strip bag back-sealing packaging machine, comprising two supports, characterized in that: An upper cutter shaft and a lower cutter shaft are installed between the two supports, and a servo motor is provided on the outside of one of the supports. The output end of the servo motor is connected to the lower cutter shaft. The upper cutter shaft and the lower cutter shaft are connected through a gear pair transmission to realize the upper cutter shaft and the lower cutter shaft rotating toward each other. A plurality of lower cutters are evenly fixed on the lower cutter shaft, and a conical blade is provided at one end of the lower cutter; a plurality of upper cutters and limit sleeves are evenly fixed on the upper cutter shaft, and the upper cutters and the limit sleeves are alternately arranged. Pressure springs are respectively provided between adjacent upper cutters and limit sleeves on the upper cutter shaft, and a conical blade is also provided at one end of the upper cutter and abuts against the outer end surface of the conical blade of the lower cutter under the action of the pressure spring.

2. The longitudinal cutting mechanism of the multi-row strip bag back-seal packaging machine according to claim 1 is characterized by: The upper cutter is installed on the upper cutter shaft through a key and can slide axially along the key to achieve circumferential limitation of the upper cutter.

3. The longitudinal cutting mechanism of the multi-row strip bag back-seal packaging machine according to claim 1 is characterized by: The sleeve wall of the limiting sleeve is provided with a notch and is fixed on the upper knife shaft by a locking screw.

4. The longitudinal cutting mechanism of the multi-row strip bag back-seal packaging machine according to claim 1 is characterized by: The support is composed of an upper support and a lower support arranged up and down, which are overlapped with each other through matching stepped surfaces and connected by bolts. The two ends of the upper knife shaft are respectively installed on the upper support through bearings, and the two ends of the lower knife shaft are respectively installed on the lower support through bearings, so as to facilitate disassembly and reduce debugging time.

5. The longitudinal cutting mechanism of the multi-row strip bag back-seal packaging machine according to claim 4 is characterized by: Two corresponding positioning pins and positioning holes are respectively arranged between the lower support and the upper support to facilitate installation and positioning.

6. The longitudinal cutting mechanism of the multi-row strip bag back-seal packaging machine according to claim 4 or 5, characterized in that: Semicircular grooves corresponding to each other are respectively provided on the opposite surfaces of the upper support and the lower support to form a mounting hole, a bearing seat is inserted into the mounting hole, the bearing seat is sleeved on the lower cutter shaft and fixed to the upper and lower supports by screws, and both ends of the lower cutter shaft are respectively installed in the bearing seat by bearings.

7. A longitudinal cutting mechanism of a multi-row strip bag back-seal packaging machine according to any one of claims 1 to 5, characterized in that: Bases are fixed at the lower ends of the supports, two long shafts are fixed between the two bases on one side of the upper knife shaft and the lower knife shaft, and rotatable guide rollers are installed on the two long shafts for guiding the packaging materials between the upper knife shaft and the lower knife shaft.

8. The longitudinal cutting mechanism of the multi-row strip bag back-seal packaging machine according to claim 7 is characterized in that: A long shaft is fixed through a shaft seat on the other side of the upper knife shaft and the lower knife shaft between the two supports, and a rotatable lead-out roller is installed on the long shaft to facilitate the lead-out of the packaging material after longitudinal cutting.

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