Closed bar cutting die

Abstract

A bar to be cut is inserted into a feeding port, a fixed shearing female die is arranged on the inner side of the feeding port and is in butt joint with a movable shearing female die, and the movable shearing female die is connected with an upper pressing head through a sliding block. The upper pressing head drives the sliding block and the movable shearing opening to move relative to the shearing fixed female die in the vertical direction to achieve shearing. An ejector rod is inserted into the shearing movable female die and connected with the closed discharging mechanism, and the discharging port is formed below the feeding port. After the movable shearing female die shears the bar, the cut bar moves downwards in the movable shearing female die to the discharge port, the knockout pin is pushed by the closed discharge mechanism, and the cut bar is popped out from the discharge port. According to the automatic blanking device, the bar cutting process can be closed and controlled, and automatic blanking can be realized.

Description

Technical Field

[0001] The utility model relates to a closed bar cutting die used in the bar shearing field. Background Art

[0002] Existing manual mechanical cutting of bar materials usually adopts an open form, which can easily cause the cut bar to shift or even fly during cutting, which is prone to safety risks. It is also not conducive to material collection and assembly line management and processing, making it difficult to ensure the quality and efficiency of production and processing. Utility Model Content

[0003] The purpose of the utility model is to overcome the deficiencies of the prior art and to provide a closed bar cutting die, which can realize closed and controllable bar cutting process and automatic material unloading.

[0004] A technical solution to achieve the above object is: a closed bar cutting die, comprising a cutting die assembly including an upper pressure head, a slider, a shearing movable die, a shearing fixed die, a feed port, a discharge port, a push rod and a closed discharge mechanism;

[0005] The bar to be cut is inserted into the feeding port, and a shearing fixed die is provided inside the feeding port. The shearing fixed die and the shearing movable die are butted against each other. The movable die is connected to the upper pressure head through a slider. The upper pressure head drives the slider and the movable shearing mouth to move relative to the shearing fixed die in the vertical direction to achieve shearing. A push rod is inserted into the movable shearing mouth, and the push rod is connected to the closed discharge mechanism. The discharge port is set below the feeding port.

[0006] After the shearing movable die shears the bar, the cut bar moves downward in the shearing movable die to the discharge port, and the closed discharge mechanism pushes the ejector rod to eject the cut bar from the discharge port.

[0007] Furthermore, a limit block is provided below the slider to limit the longitudinal displacement of the slider.

[0008] Furthermore, a return spring is sleeved on the outer side of the limit block at the bottom of the slider.

[0009] Furthermore, the closed discharge mechanism includes a push rod, an inclined block and a discharge spring. The push rod is connected to the push rod through the discharge spring. A pulley is fixed on the push rod, and the pulley is in contact with the inclined surface of the inclined block. When the push rod moves downward with the shearing die, it drives the push rod. At this time, the pulley moves along the inclined surface, driving the push rod forward to push the discharge spring. When the cut bar moves to the discharge port, the discharge spring releases the pressure and pushes the cut bar to pop out of the discharge port through the push rod.

[0010] Furthermore, a push rod fixing sleeve is sleeved on the outer side of the push rod.

[0011] Further, the to-be-cut bar is in contact with the end face of the ejector rod, and the insertion depth of the ejector rod in the shearing movable die is adjustable.

[0012] Further, the lower part of the discharging port is provided with a guide slope.

[0013] The closed bar cutting die has the following advantages:

[0014] 1. The cutting and discharging of the bar are both in the closed die, and the cut bar is discharged through the discharging mechanism at the discharging port, and the whole process is closed and controllable.

[0015] 2. The position of the ejector rod can be adjusted according to the size requirement of the bar, so as to match the length of the cut bar.

[0016] 3. The device is convenient and safe to operate. BRIEF DESCRIPTION OF DRAWINGS

[0017] Figure 1 It is a structural schematic view of the closed bar cutting die;

[0018] In the figure, 1 is an inclined block, 2 is a pulley, 3 is a push rod, 4 is a push rod sheath, 5 is a discharging spring, 6 is an ejector rod, 7 is an upper press head, 8 is a sliding block, 9 is a shearing movable die, 10 is a cut bar, 11 is a to-be-cut bar, 12 is a shearing fixed die, 13 is a limiting block, and 14 is a return spring. DETAILED DESCRIPTION

[0019] In order to better understand the technical scheme of the utility model, the following will be described in detail through specific examples:

[0020] Please refer to Figure 1 The closed bar cutting die comprises an upper press head 7, a sliding block 8, a shearing movable die 9, a shearing fixed die 12, a feeding port, a discharging port, an ejector rod 6 and a closed discharging mechanism.

[0021] The to-be-cut bar 11 is inserted into the feeding port, the inner side of the feeding port is provided with the shearing fixed die 12, and the shearing fixed die 12 is in butt joint with the shearing movable die 9. The shearing movable die 9 is connected with the upper press head 7 through the sliding block 8. The ejector rod 6 is inserted into the movable shearing port 9, and the insertion length of the to-be-cut bar 11 is adjusted and determined by the ejector rod 6. The lower part of the sliding block 8 is provided with a limiting block 13, and the limiting block 13 limits the longitudinal displacement of the sliding block 8. The outer side of the limiting block at the bottom of the sliding block is sleeved with a return spring 14.

[0022] The top rod 6 is connected with the closed discharging mechanism. Specifically, the closed discharging mechanism comprises the push rod 3, the inclined block 1 and the discharging spring 5. The push rod 3 is connected with the top rod 6 through the discharging spring 5, the pulley 2 is fixed on the push rod 3 and is in contact with the inclined surface of the inclined block 1. When the top rod 6 moves downward along with the shearing movable die 9, the push rod 3 is driven to move, at this time, the pulley 2 moves along the inclined surface to drive the push rod to push and squeeze the discharging spring 5. When the cut bar 10 moves to the discharging port, the discharging spring 5 releases the pressure to push the cut bar 10 out of the discharging port through the top rod 6.

[0023] As preferred, the push rod fixing sleeve 4 is sleeved on the outer side of the push rod 3.

[0024] As preferred, the lower part of the discharging port is provided with a guide slope.

[0025] The whole processing flow of the utility model is as follows:

[0026] Firstly, the bar 11 is inserted into the shearing movable die 9, and the insertion length is determined by the ramming pin.

[0027] When shearing, the pressure head 7 pushes the sliding block 8 and the shearing movable die 9 to move downward, the shearing movable die 9 and the shearing fixed die 12 are sheared to cut the bar. When the shearing movable die 9 moves downward, the pulley 2 on the push rod 3 moves downward on the inclined surface of the inclined block 1, and moves forward to drive the push rod 3 to move forward to compress the discharging spring 5 to accumulate pressure. When the sheared bar moves to the discharging port, the pressure accumulated by the discharging spring 5 is released, the sheared bar is pushed out of the discharging port through the top rod 6, and the bar is discharged along the slope.

[0028] When the sliding block 8 moves to the limit block position, the compression reset spring 14 accumulates pressure. When the pressure head 7 returns, the sliding block 8 loses downward pressure, and the reset spring 14 releases pressure to push the sliding block 8 to reset to the original position. At the same time, the discharging spring 5 also completely releases the top rod 6 to be in the state that the original position can be restored. When the bar is inserted, the top rod 6 retreats to the fixed point to determine the length of the inserted bar. When the upper pressure head enters the second working stroke and moves downward, the second shearing action starts.

[0029] Those skilled in the art should understand that the above embodiments are only used to illustrate the utility model, and are not used as the limitation of the utility model. As long as the changes and modifications of the above described embodiments are within the scope of the utility model, they will fall within the scope of the claims of the utility model.

Claims

1. A closed bar cutting die, characterized in that: It comprises an upper pressure head (7), a slider (8), a shearing movable die (9), a shearing fixed die (12), a feed port, a discharge port, a push rod (6) and a closed discharge mechanism; The bar material to be cut is inserted into the feeding port, and a shearing fixed die (12) is provided on the inner side of the feeding port. The shearing fixed die (12) and the shearing movable die (9) are connected to each other. The shearing movable die (9) is connected to the upper pressure head (7) through the slider (8). The upper pressure head (7) drives the slider (8) and the shearing movable die (9) to move relative to the shearing fixed die (12) in the vertical direction to achieve shearing. A push rod (6) is inserted into the shearing movable die (9), and the push rod (6) is connected to the closed discharge mechanism. The discharge port is set below the feeding port. After the shearing movable die (9) shears the bar material, the cut bar material moves downward in the shearing movable die (9) to the discharge port, and the closed discharge mechanism pushes the ejector rod to eject the cut bar material from the discharge port.

2. A closed bar cutting die according to claim 1, characterized in that: A limit block (13) is provided below the slider (8), and the limit block (13) limits the longitudinal displacement of the slider (8).

3. A closed bar cutting die according to claim 2, characterized in that: A return spring (14) is sleeved on the outer side of the limit block at the bottom of the slider.

4. A closed bar cutting die according to claim 1, characterized in that: The closed discharge mechanism comprises a push rod (3), an inclined block (1) and a discharge spring (5). The push rod (3) is connected to the push rod (6) through the discharge spring (5). A pulley (2) is fixed on the push rod (3). The pulley (2) is in contact with the inclined surface of the inclined block (1). When the push rod (6) moves downward with the shearing movable die (9), it drives the push rod (3). At this time, the pulley (2) moves along the inclined surface, driving the push rod to push the discharge spring (5) forward. When the cut bar moves to the discharge port, the discharge spring (5) releases pressure and pushes the cut bar to pop out of the discharge port through the push rod (6).

5. A closed bar cutting die according to claim 4, characterized in that: A push rod fixing sleeve (4) is sleeved on the outer side of the push rod (3).

6. A closed bar cutting die according to claim 4, characterized in that: The bar material to be cut abuts against the end face of the push rod (6), and the insertion depth of the push rod (6) in the shearing movable die (9) is adjustable.

7. The closed bar cutting die according to claim 1, characterized in that: A guide ramp is provided at the lower part of the discharge port.

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