Longitudinal cutting assembly

Abstract

The utility model discloses a longitudinal cutting assembly which comprises a base, a knife rest is movably connected to the base, a longitudinal cutting knife is connected to the knife rest, a movable block is arranged on the base, the movable block is connected to the base in a sliding mode through a driving mechanism, and the driving mechanism comprises a rotating block, a gear set and a driving piece. The rotating block is rotationally connected to the base and connected with the driving piece through the gear set, so that the rotating block is driven by the driving piece to rotate, a sliding way is arranged on the surface of the rotating block, the movable block is arranged in the sliding way in a sliding fit mode, and the movable block is connected with the tool rest through a connecting piece. According to the longitudinal cutting device, the longitudinal cutting precision and stability are improved.

Description

Technical Field

[0001] The utility model relates to the technical field of carton forming machines, in particular to a longitudinal cutting assembly. Background Art

[0002] Cartons are the most widely used packaging products, usually used as wrappers for goods or outer protectors for items. A carton packaging machine is also called a carton forming machine or a carton unpacking machine. Its longitudinal cutting device is an essential part. The main components of the current longitudinal cutting devices on the market include a base, a tool rest, a driving structure and a longitudinal cutting knife. The tool rest is rotatably connected to the base, the longitudinal cutting knife is rotatably connected to the tool rest, and the longitudinal cutting knife rotates through the driving structure. Usually, a stretching structure, such as an electric telescopic rod, is provided between the tool rest and the base to pull the tool rest to swing back and forth along the base, thereby driving the longitudinal cutting knife to move up and down to control the operation and cutting depth of the longitudinal cutting knife. However, by controlling the swing of the tool rest through the stretching rod, due to the inertia of the stretching rod, the swing of the tool rest is not stable enough, and finally the longitudinal cutting knife is unstable during longitudinal cutting, and the up and down movement of the longitudinal cutting knife cannot be accurately controlled. Summary of the Utility Model

[0003] The purpose of the utility model is to design a longitudinal cutting assembly to solve the above-mentioned technical deficiencies.

[0004] The utility model provides a longitudinal cutting assembly, including a base, a tool rest movably connected to the base, a longitudinal cutting knife connected to the tool rest, a movable block provided on the base, the movable block being slidably connected to the base through a driving mechanism, the driving mechanism including a rotating block, a transmission group and a driving member, the rotating block being rotatably connected to the base through the transmission group, the rotating block rotating under the drive of the driving member, a slideway being provided on the surface of the rotating block, the movable block being slidably fitted in the slideway, and the movable block being connected to the tool rest through a connecting member.

[0005] Preferably, the longitudinal cutting knife can be an active longitudinal cutting knife or a passive longitudinal cutting knife according to its transmission mode.

[0006] Further optimized, a second driven wheel and a second driving wheel are provided on the tool rest, the second driven wheel and the second driving wheel are distributed front and back on the tool rest, the second driving wheel is connected to the tool rest, the longitudinal cutting knife is connected to the second driven wheel, and the second driving wheel drives the second driven wheel to rotate, so that the longitudinal cutting knife cuts as an active longitudinal cutting knife.

[0007] Preferably, both ends of the rotating block are rotatably connected to the base through pin shafts, the gear group includes a first driving wheel and a first driven wheel, the first driving wheel is connected to the output end of the driving member, the first driven wheel is connected to the pin shaft, and the first driving wheel and the first driven wheel are meshed with each other.

[0008] For further optimization, a coupling is provided between the pin shaft located between the first driven wheel and the rotating block.

[0009] Preferably, a slider is provided on the movable block, and a guide rail that slidably cooperates with the slider is provided on the base.

[0010] For further optimization, a tension pulley is provided between the second driving wheel and the second driven wheel on the tool rest. A shaft body is provided on the tool rest, and the tension pulley is sleeved on the shaft body. A waist-shaped hole is provided on the tool rest, and the shaft body is movably connected in the waist-shaped hole and can adjust its position along the length direction of the waist-shaped hole.

[0011] Preferably, the base includes a horizontal base and a vertical base. The vertical base is connected above the horizontal base, and a fixed seat is connected below the horizontal base. The tool rest is rotatably connected to the fixed seat.

[0012] For further optimization, a pressing piece is provided on the bottom of the tool rest along the front-back direction. The front end of the pressing piece is bent upward. In the working state, the bottom surface of the pressing piece moves with the tool rest to be able to press the upper surface of the cardboard; or the pressing piece is provided on the fixed seat and is located below the tool rest.

[0013] The technical effect of the present utility model is that a movable block is provided on the base. The movable block can make a reciprocating movement in the front-back direction along the base through a driving mechanism. A telescopic connecting piece is provided between the movable block and the tool rest, that is, the connecting piece drives the tool rest to swing by being pulled by the movable block. The driving mechanism mainly includes a rotating block and a gear set. The rotating block is rotatably connected to the base, and an axially spiral slideway is provided on the outer periphery of the rotating block. The movable block slidably cooperates with the slideway. When the rotating block rotates, it drives the movable block to perform axial translation, so that the movable block can smoothly perform axial translation, thereby smoothly driving the tool rest to swing through the connecting piece, enabling the longitudinal cutting knife to smoothly move up and down, greatly improving the accuracy and stability of longitudinal cutting. Description of the Drawings

[0014] Figure 1 is the overall structure diagram;

[0015] Figure 2 is the overall structure diagram from another perspective;

[0016] Figure 3 is the overall side view structure diagram;

[0017] Figure 4 is the overall structure diagram from another perspective.

[0018] In the figure: 1. Base; 1-1. Horizontal base; 1-2. Vertical base; 2. Tool rest; 3. Longitudinal cutting tool; 4. Movable block; 5. Rotating block; 5-1. Slideway; 5-2. Pin shaft; 6. Driving member; 7. Connecting member; 8. Gear set; 8-1. First driving wheel; 8-2. First driven wheel; 9. Coupling; 10. Slide block; 11. Guide rail; 12. Second driven wheel; 13. Second driving wheel; 14. Tensioning wheel; 15. Shaft body; 16. Kidney-shaped hole; 17. Fixed seat; 18. Pressing piece. Specific implementation manner

[0019] Next, the technical solutions in the embodiments of the present invention will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art belong to the protection scope of the present invention.

[0020] The present invention includes a base 1, the base 1 includes a horizontal base 1-1 and a vertical base 1-2, the vertical base 1-2 is connected above the horizontal base 1-1, a fixed seat 17 is connected below the horizontal base 1-1, the tool rest 2 is rotatably connected to the fixed seat 17, the tool rest 2 is a plate structure and is vertically connected to the fixed seat 17, a longitudinal cutting tool 3 is connected to the tool rest 2, a movable block 4 is provided on the horizontal base 1-1, the movable block 4 is located at the bottom of the horizontal base 1-1, the movable block 4 is slidably connected to the horizontal base 1-1 through a driving mechanism, the driving mechanism includes a rotating block 5, a transmission group 8 and a driving member 6. In this embodiment, the rotating block 5 is a cylindrical structure, and its axial two ends are rotatably connected to the horizontal base 1-1 through a pin shaft 5-2, so that the rotating block 5 can axially rotate relative to the horizontal base 1-1. The driving member 6 generally uses a motor, the driving member 6 is fixed on the horizontal base 1-1, the transmission group 8 is a gear set, which includes a first driving wheel 8-1 and a first driven wheel 8-2. The first driving wheel 8-1 is connected to the output end of the driving member 6, the first driven wheel 8-2 is connected to the pin shaft 5-2, the first driving wheel 8-1 and the first driven wheel 8-2 are meshed with each other, the driving member 6 drives the first driving wheel 8-1 to rotate forward and backward, the first driving wheel 8-1 drives the first driven wheel 8-2 to rotate forward and backward, the first driven wheel 8-2 is connected to the pin shaft 5-2, and the rotating block 5 rotates forward and backward under the drive of the first driven wheel 8-2. Of course, the transmission group 8 can also be other transmission methods.

[0021] The surface of the rotating block 5 is provided with a slideway 5-1. The slideway 5-1 is opened on the surface of the cylinder and extends axially, forming a slideway 5-1 similar to a spiral path. The movable block 4 is slidably fitted in the slideway 5-1. The movable block 4 can slide along the path of the slideway 5-1. When the rotating block 5 rotates, the movable block 4 forms an axial movement along the path of the slideway 5-1. The movable block 4 is connected to the tool rest 2 through a connecting member 7. Thus, the movable block 4 pulls the connecting member 7, and the connecting member 7 pulls the tool rest 2, causing the tool rest 2 to rotate along the fixed seat 17.

[0022] The connecting member 7 can be a telescopic pull rod, that is, the pull rod has a certain elastic buffer, so that the tool rest 2 has a certain elastic buffer when swinging.

[0023] It should be noted that, according to different transmission methods, the longitudinal cutting knife 3 can be divided into a passive longitudinal cutting knife and an active longitudinal cutting knife. When the longitudinal cutting knife 3 rotates driven by a driving device such as a motor, it is an active type longitudinal cutting knife;

[0024] When the longitudinal cutting knife 3 is connected to the tool rest 2 through a pin shaft and there is no additional driving device to drive its rotation, and it is only driven to rotate by the cardboard transmission, or the longitudinal cutting knife 3 is a polygonal stabbing knife and directly presses down on the cardboard for cutting, it is a passive type cutting knife. The longitudinal cutting knife 3 can be a circular knife, a polygonal stabbing knife, etc., and can be specifically selected and used according to actual production requirements.

[0025] The driving device includes a second driven wheel 12 and a second driving wheel 13. The second driven wheel 12 and the second driving wheel 13 are arranged front and back along the tool rest 2. The second driving wheel 13 is connected to the tool rest 2, and the longitudinal cutting knife 3 is connected to the second driven wheel 12. The second driving wheel 13 and the second driven wheel 12 are driven by a belt. A key shaft passes through the center of the second driving wheel 13, and a key hole is opened in the center of the key shaft. In this embodiment, the key hole is a hexagonal hole, and a connecting shaft passes through the key hole. By driving the connecting shaft to rotate, the key shaft is driven to rotate, the key shaft drives the second driving wheel 13 to rotate, thereby driving the second driven wheel 12 to rotate, and the second driven wheel 12 drives the longitudinal cutting knife 3 to rotate for longitudinal cutting.

[0026] Furthermore, a coupling 9 is provided between the pin shaft 5-2 located between the first driven wheel 8-2 and the rotating block 5, that is, the pin shaft 5-2 is designed in sections and connected through the coupling 9 to prevent the pin shaft 5-2 from bearing excessive torque loads and play a role in overload protection.

[0027] Furthermore, a slider 10 is provided on the movable block 4, and a guide rail 11 slidably fitted with the slider 10 is provided on the base 1. Through the sliding fit of the slider 10 and the guide rail 11, it plays a guiding role in the sliding of the movable block 4 along the slideway 5-1, so that the movable block 4 can reciprocate more stably.

[0028] Furthermore, a tension pulley 14 is provided between the second driving wheel 13 and the second driven wheel 12 on the tool rest 2 for tensioning the belt between the second driving wheel 13 and the second driven wheel 12. A shaft body 15 is provided on the tool rest 2, and the tension pulley 14 is sleeved on the shaft body 15. A kidney-shaped hole 16 is formed in the tool rest 2, and the shaft body 15 is movably connected in the kidney-shaped hole 16 and can adjust its position along the length direction of the kidney-shaped hole 16, so that the position of the tension pulley 14 can be adjusted.

[0029] Furthermore, a horizontal pressing piece 18 is provided on the bottom of the tool rest 2 in the front-rear direction. The pressing piece 18 is fixed to the bottom of the tool rest 2 through fasteners. The pressing piece 18 is provided with an avoidance disconnection groove at the position of the longitudinal cutting knife 3 to avoid interfering with the rotation of the longitudinal cutting knife 3. A kidney-shaped through hole is provided at the bottom of the tool rest 2, and the pressing piece 18 is fixed in the kidney-shaped through hole through fasteners, so as to realize the height adjustment of the pressing piece 18 relative to the tool rest 2. The pressing piece 18 is horizontally arranged and presses the cardboard during longitudinal cutting. The front end of the pressing piece 18 is bent upward to guide the cardboard to feed.

[0030] Certainly, the pressing piece 18 can also be fixed to the bottom of the fixed seat 17 and can be fixedly installed according to actual needs.

[0031] The present utility model is not limited to the above-mentioned optimal implementation manner. Anyone can obtain other various forms of products under the inspiration of the present utility model. However, no matter what changes are made in its shape or structure, as long as it has the same or similar technical solutions as the present application, it falls within the protection scope of the present utility model.

Claims

1. A longitudinal cutting component, characterized in that, It includes a base (1), on which a tool rest (2) is movably connected. A longitudinal cutting tool (3) is connected to the tool rest (2). An active block (4) is provided on the base (1), and the active block (4) is slidably connected to the base (1) through a driving mechanism. The driving mechanism includes a rotating block (5), a transmission group (8) and a driving member (6). The rotating block (5) is rotationally connected to the base (1) through the transmission group (8). The rotating block (5) rotates under the drive of the driving member (6). A slideway (5-1) is provided on the surface of the rotating block (5), and the active block (4) is slidably fitted in the slideway (5-1). The active block (4) is connected to the tool rest (2) through a connecting member (7).

2. The longitudinal cutting assembly according to claim 1, wherein The longitudinal cutting tool (3) is an active type longitudinal cutting tool (3), that is, the longitudinal cutting tool (3) is driven by a driving structure to rotate automatically.

3. A longitudinal cutting assembly according to claim 1, characterized in that, The longitudinal cutting tool (3) is a passive type longitudinal cutting tool (3), that is, the longitudinal cutting tool (3) is movably connected to the tool rest (2). When the longitudinal cutting tool (3) presses down and contacts the cardboard, the longitudinal cutting tool (3) is driven to rotate by the movement of the cardboard; or the longitudinal cutting tool (3) is fixedly connected to the tool rest (2), the longitudinal cutting tool (3) is fixed relative to the tool rest (2), and the longitudinal cutting tool (3) presses down and inserts into the cardboard to form a longitudinal cut.

4. A longitudinal cutting assembly according to claim 2, wherein A second driven wheel (12) and a second driving wheel (13) are provided on the tool rest (2). The second driven wheel (12) and the second driving wheel (13) are distributed front and back on the tool rest (2). The second driving wheel (13) is connected to the tool rest (2), and the longitudinal cutting tool (3) is connected to the second driven wheel (12). The second driving wheel (13) drives the second driven wheel (12) to rotate, so that the longitudinal cutting tool (3) cuts as an active longitudinal cutting tool (3).

5. A longitudinal cutting assembly according to claim 2, characterized in that, Both ends of the rotating block (5) are rotationally connected to the base (1) through a pin shaft (5-2). The transmission group (8) includes a first driving wheel (8-1) and a first driven wheel (8-2). The first driving wheel (8-1) is connected to the output end of the driving member (6), the first driven wheel (8-2) is connected to the pin shaft (5-2), and the first driving wheel (8-1) and the first driven wheel (8-2) are meshed with each other.

6. The longitudinal cutting assembly according to claim 5, wherein A coupling (9) is provided on the pin shaft (5-2) between the first driven wheel (8-2) and the rotating block (5).

7. The longitudinal cutting assembly according to claim 1, characterized in that, A slider (10) is provided on the active block (4), and a guide rail (11) slidably fitted with the slider (10) is provided on the base (1).

8. The longitudinal cutting assembly according to claim 4, characterized in that, A tensioning wheel (14) is provided on the tool rest (2) between the second driving wheel (13) and the second driven wheel (12). A shaft body (15) is provided on the tool rest (2). The tensioning wheel (14) is sleeved on the shaft body (15). A waist-shaped hole (16) is formed on the tool rest (2), and the shaft body (15) is movably connected in the waist-shaped hole (16) and can adjust its position along the length direction of the waist-shaped hole (16).

9. A longitudinal cutting assembly according to claim 1, characterized in that, The base (1) includes a horizontal base (1-1) and a vertical base (1-2). The vertical base (1-2) is connected above the horizontal base (1-1). A fixing base (17) is connected below the horizontal base (1-1), and the tool rest (2) is rotatably connected to the fixing base (17).

10. A longitudinal cutting assembly according to claim 9, wherein, A pressing piece (18) is provided at the bottom of the tool rest (2) along the front-rear direction. The front end of the pressing piece (18) is bent upward. In the working state, the bottom surface of the pressing piece (18) moves with the tool rest (2) to press against the upper surface of the cardboard; or the pressing piece (18) is arranged on the fixing base (17) and below the tool rest (2).

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