Extruder shearing device with automatic retraction function

Abstract

The present invention discloses an extruder shearing device with an automatic blade retraction function. The extruder shearing device with an automatic blade retraction function includes a main shearing cylinder, a main shearing bracket, a sliding block, a shearing blade, a material shifting device, a shearing blade rotation and retraction mechanism, and a die cylinder. The main shearing cylinder is arranged on the top of the main shearing bracket, the sliding block is arranged inside the main shearing bracket and connected to the output end of the main shearing cylinder, the shearing blade is arranged at the lower end of the sliding block, the material shifting device is arranged on one side of the main shearing bracket, the shearing blade rotation and retraction mechanism is arranged on one side of the lower end of the sliding block and connected to the shearing blade, and the die cylinder is arranged on the main shearing bracket. The extruder shearing device with an automatic blade retraction function does not require an additional electric push cylinder or oil cylinder drive, and can realize the automatic separation of the return shearing blade from the mold end face, thereby improving the product qualification rate and production efficiency.

Description

Technical Field

[0001] The invention belongs to the technical field of extruder shearing, and in particular relates to an extruder shearing device with an automatic knife retraction function. Background Art

[0002] Extruder shearing devices are essential equipment for producing light alloy (aluminum and magnesium alloy) tubes, rods, and profiles. Existing shearing devices can easily cause unevenness in the die end faces after shearing, leading to debris sticking to the die end faces. This can cause tearing in the mold cavity, extrusion bubbles, and difficulty closing the mold. Shear blades can also become stuck to aluminum after shearing, making the return stroke difficult and reducing product yield. Other existing technologies require the shearing device to be moved and rotated entirely by a hydraulic cylinder or push cylinder during the return stroke, increasing manufacturing costs and system complexity.

[0003] Therefore, in view of the above-mentioned characteristics of high manufacturing cost, low production efficiency, uneven shearing of the mold end face, debris sticking to the mold end face, and difficulty in mold closing, it is necessary to provide an extruder shearing device with automatic retraction function to solve the above technical problems. Summary of the Invention

[0004] In order to at least partially solve the technical problems existing in the above-mentioned prior art, the present invention provides an extruder shearing device with an automatic knife retraction function.

[0005] The extruder shearing device with automatic retraction function of the present invention is characterized in that the extruder shearing device with automatic retraction function includes a main shearing cylinder, a main shearing bracket, a sliding block, a scissor blade, a material shifting device, a scissor rotation and retreat mechanism and a die cylinder, the main shearing cylinder is arranged on the top of the main shearing bracket, the sliding block is arranged inside the main shearing bracket and connected to the output end of the main shearing cylinder, the scissor blade is arranged at the lower end of the sliding block, the material shifting device is arranged on one side of the main shearing bracket, the scissor rotation and retreat mechanism is arranged on one side of the lower end of the sliding block and connected to the scissor blade, and the die cylinder is arranged on the main shear bracket, wherein:

[0006] The material-dipping device includes a guide rod, a material-dipping oil cylinder, a material-dipping rotating shaft, a rotating shaft seat, a material-dipping piece, a drag chain and a detection device. The guide rod is connected to the rotating shaft of the main shear bracket, the material-dipping oil cylinder is arranged on the guide rod, the detection device is arranged at the connection between the material-dipping rotating shaft and the material-dipping oil cylinder, the rotating shaft seat is arranged at the end of the guide rod, the material-dipping piece is arranged on the material-dipping rotating shaft, and the drag chain drives the guide rod;

[0007] The scissors rotation and retreat mechanism includes a spring, a spherical combination pad, a bolt and a scissors reset pin, the bolt is connected to the scissors blade and the sliding block, the spring is arranged on the bolt, the spherical combination pad is arranged between the sliding block and the spring, and the scissors reset pin is arranged on the sliding block.

[0008] Furthermore, in the extruder shearing device with automatic retraction function of the present invention, a rotating groove is provided on one side of the sliding block, and a rotating table is provided on the top of the scissor blade. The rotating table matches the rotating groove, and the scissor blade is inserted into the rotating groove through the rotating table.

[0009] Furthermore, in the extruder shearing device with automatic retraction function of the present invention, scissor baffles are provided at both ends of the rotating groove, the scissor baffles are fixed to the sliding block by screws, and the scissor baffles abut against the rotating table.

[0010] Furthermore, in the extruder shearing device with automatic blade retraction function of the present invention, a lubrication hole is provided on the sliding block, and the lubrication hole is communicated with the rotating groove.

[0011] Furthermore, in the extruder shearing device with automatic knife retraction function of the present invention, the material-discharging cylinder is connected to the middle rotating shaft of the guide rod, and a connecting piece is provided at the output end of the material-discharging cylinder.

[0012] Furthermore, in the extruder shearing device with automatic knife retraction function of the present invention, one end of the connecting piece and the output end of the material-diverting cylinder are respectively arranged on both sides of the detection device.

[0013] Furthermore, in the extruder shearing device with automatic retraction function of the present invention, the other end of the connecting piece is fixedly connected to the material-discharging shaft, the material-discharging shaft is matched with the shaft seat, the material-discharging shaft is inserted into the shaft seat, and the material-discharging shaft is connected to the shaft seat shaft.

[0014] Furthermore, in the extruder shearing device with automatic blade retraction function of the present invention, an eccentric shaft hole is provided on the upper end of the material-diverting piece, and the eccentric shaft hole matches the material-diverting rotating shaft;

[0015] A material shifting groove is provided on one side of the rotating shaft seat, and the material shifting piece is provided in the material shifting groove and passes through the eccentric shaft hole through the material shifting rotating shaft. The eccentric shaft hole and the material shifting rotating shaft are fixed by a connecting key.

[0016] Furthermore, in the extruder shearing device with automatic retraction function of the present invention, the scissors reset pin passes through the sliding block and the rotating shaft seat, one end of the scissors reset pin abuts against the scissor blade, and the other end of the scissors reset pin abuts against the upper end of the material-picking piece.

[0017] Furthermore, in the extruder shearing device with automatic retraction function of the present invention, a mounting groove is provided on the sliding block, the bolt passes through the scissor blade and the mounting groove in sequence, the top of the bolt is clamped with the scissor blade, the spherical combination pad and the spring are successively connected in the mounting groove through the bolt, and the end of the bolt is fixed to the spring through a nut.

[0018] The extruder shearing device with automatic blade retraction function of the present invention has the following advantages and beneficial effects:

[0019] When the shearing device is shearing, the scissor blades can be close to the end face of the mold, effectively ensuring the shearing quality of the product. When shearing back, the shear blades can be prevented from being dragged onto the shearing surface of the extrusion mold, thereby effectively improving the flatness of the shearing surface of the extruded profile, improving the shearing accuracy, avoiding the occurrence of mold cavity tearing, preventing the generation of extrusion bubbles, and even causing difficulties in mold closing. In addition, it avoids the difficulty of returning the scissor blades due to the scissor blades sticking to aluminum. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the following briefly introduces the drawings required for the embodiments or the description of the prior art. Obviously, the drawings described below are only used to further understand the embodiments of the present invention and constitute part of the present invention. For those skilled in the art, other drawings can be obtained based on these drawings without creative work. In the drawings:

[0021] Figure 1 This is a front view of the extruder shearing device with automatic blade retraction function of the present invention;

[0022] Figure 2 It is a left view of the extruder shearing device with automatic blade retraction function of the present invention;

[0023] Figure 3 for Figure 2 The enlarged structural diagram of A in the middle shows the installation position of the detection device;

[0024] Figure 4 A cross-sectional view of an extruder shearing device with an automatic blade retraction function according to the present invention;

[0025] Figure 5 for Figure 4 The enlarged structural diagram of B in the figure shows the structure in shear state;

[0026] Figure 6 for Figure 4 The enlarged structural diagram of B in the figure shows the structure when the tool is retracted.

[0027] Description of reference numerals:

[0028] 1: Main shear cylinder; 2: Main shear bracket;

[0029] 3: sliding block, 31: rotating groove, 32: lubrication hole, 33: mounting groove;

[0030] 4: scissor blade, 41: rotating table;

[0031] 5: material discharging device, 51: guide rod, 52: material discharging cylinder, 53: material discharging shaft;

[0032] 54: rotating shaft seat, 541: material chute;

[0033] 55: shifting piece, 551: eccentric shaft hole;

[0034] 56: drag chain, 57: detection device, 58: connecting piece;

[0035] 6: scissors rotation retreat mechanism, 61: spring, 62: spherical combination pad, 63: bolt, 64: scissors reset pin;

[0036] 7: Die cylinder; 8: Scissor stopper. DETAILED DESCRIPTION

[0037] To make the objectives, technical solutions, and advantages of the present invention more clear, the technical solutions of the present invention will be clearly and completely described below in conjunction with specific embodiments of the present invention and corresponding drawings. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0038] like Figures 1 to 6 As shown, the extruder shearing device with automatic retraction function of the present invention is characterized in that the extruder shearing device with automatic retraction function includes a main shearing cylinder 1, a main shearing bracket 2, a sliding block 3, a scissor blade, a material shifting device 5, a scissor rotation and retreat mechanism 6 and a die cylinder 7, the main shearing cylinder 1 is arranged on the top of the main shearing bracket 2, the sliding block 3 is arranged inside the main shearing bracket 2 and connected to the output end of the main shearing cylinder 1, the scissor blade is arranged at the lower end of the sliding block 3, the material shifting device 5 is arranged on one side of the main shearing bracket 2, the scissor rotation and retreat mechanism 6 is arranged on one side of the lower end of the sliding block 3 and connected to the scissor blade, and the die cylinder 7 is arranged on the main shear bracket 2, wherein:

[0039] The material-diverting device 5 includes a guide rod 51, a material-diverting oil cylinder 52, a material-diverting rotating shaft 53, a rotating shaft seat 54, a material-diverting piece 55, a drag chain 56 and a detection device 57. The guide rod 51 is connected to the rotating shaft of the main shear bracket 2, the material-diverting oil cylinder 52 is arranged on the guide rod 51, the detection device 57 is arranged at the connection between the material-diverting rotating shaft 53 and the material-diverting oil cylinder 52, the rotating shaft seat 54 is arranged at the end of the guide rod 51, the material-diverting piece 55 is arranged on the material-diverting rotating shaft 53, and the drag chain 56 drives the guide rod 51;

[0040] The scissors rotation retreat mechanism 6 includes a spring 61, a spherical combination pad 62, a bolt 63 and a scissors reset pin 64. The bolt 63 is connected to the scissors blade and the sliding block 3. The spring 61 is arranged on the bolt 63. The spherical combination pad 62 is arranged between the sliding block 3 and the spring 61. The scissors reset pin 64 is arranged on the sliding block 3.

[0041] Furthermore, in the extruder shearing device with automatic retraction function of the present invention, a rotating groove 31 is provided on one side of the sliding block 3, and a rotating platform 41 is provided on the top of the scissor blade 4. The rotating platform 41 matches the rotating groove 31, and the scissor blade 4 is inserted into the rotating groove 31 through the rotating platform 41, thereby effectively ensuring that the scissor blade 4 can rotate in the rotating groove 31.

[0042] Furthermore, in the extruder shearing device with automatic retraction function of the present invention, scissor baffles 8 are provided at both ends of the rotating groove 31. The scissor baffles 8 are fixed to the sliding block 3 by screws, and the scissor baffles 8 are in contact with the rotating table 41, thereby effectively ensuring that the scissor blades 4 can be fixed and easy to replace.

[0043] Furthermore, in the extruder shearing device with automatic retraction function of the present invention, a lubrication hole 32 is provided on the sliding block 3, and the lubrication hole 32 is connected to the rotating groove 31, ensuring that the scissor blade 4 rotates smoothly and without extra force, reducing the wear between the rotating table 41 and the rotating groove 31, and effectively improving the service life.

[0044] Furthermore, in the extruder shearing device with automatic retraction function of the present invention, the material-discharging cylinder 52 is connected to the middle rotating shaft of the guide rod 51, and a connecting piece 58 is provided at the output end of the material-discharging cylinder 52, thereby ensuring that the material-discharging cylinder 52 can adjust the angle during the process of driving the connecting piece 58 to move.

[0045] Furthermore, in the extruder shearing device with automatic retraction function of the present invention, one end of the connecting piece 58 and the output end of the material-discharging cylinder 52 are respectively arranged on both sides of the detection device 57, thereby effectively ensuring that the detection device 57 can detect that the material-discharging cylinder 52 drives the connecting piece 58 to work.

[0046] Furthermore, in the extruder shearing device with automatic retraction function of the present invention, the other end of the connecting piece 58 is fixedly connected to the material discharging shaft 53, the material discharging shaft 53 is matched with the shaft seat 54, the material discharging shaft 53 is inserted into the shaft seat 54, and the material discharging shaft 53 is connected to the shaft of the shaft seat 54, so that the material discharging cylinder 52 drives the material discharging shaft 53 to rotate through the connecting piece 58.

[0047] Furthermore, in the extruder shearing device with automatic retraction function of the present invention, an eccentric shaft hole 551 is provided on the upper end of the material-diverting piece 55, and the eccentric shaft hole 551 matches the material-diverting rotating shaft 53;

[0048] A material shifting groove 541 is provided on one side of the rotating shaft seat 54, and a material shifting piece 55 is provided in the material shifting groove 541 and passes through the eccentric shaft hole 551 through the material shifting rotating shaft 53. The eccentric shaft hole 551 and the material shifting rotating shaft 53 are fixed by a connecting key, thereby ensuring that the material shifting piece 55 can be rotated by the material shifting shaft. During the rotation process, the material shifting piece 55 can contact the scissor blade 4, causing the scissor blade 4 to deviate.

[0049] Furthermore, in the extruder shearing device with automatic retraction function of the present invention, the scissors reset pin 64 passes through the sliding block 3 and the rotating shaft seat 54, one end of the scissors reset pin 64 abuts against the scissor blade 4, and the other end of the scissors reset pin 64 abuts against the upper end of the material-picking piece 55, thereby effectively adjusting the gap between the shearing edge of the scissors blade 4 and the end face of the mold.

[0050] Furthermore, in the extruder shearing device with automatic retraction function of the present invention, a mounting groove 33 is provided on the sliding block 3, and the bolt 63 passes through the scissor blade 4 and the mounting groove 33 in sequence. The top of the bolt 63 is clamped with the scissor blade 4, and the spherical combination pad 62 and the spring 61 are successively connected in the mounting groove 33 through the bolt 63. The end of the bolt 63 is fixed to the spring 61 through a nut, thereby ensuring that the scissor blade 4 rotates and the shear blade is away from the end face of the extrusion die, while ensuring that the bolt 63 and the spring 61 are not subjected to eccentric force when the scissor blade 4 rotates.

[0051] Specifically, when the extruder shearing device with automatic retraction function is shearing, the stripping piece 55 is in the return position (that is, the stripping piece 55 is in contact with the scissor blade 4), the stripping cylinder 52 is started, and the stripping cylinder 52 causes the stripping shaft 53 to rotate in the shaft seat 54 through the connecting piece 58. The detection device 57 is used to detect when the stripping cylinder 52 drives the connecting piece 58 to move. At the same time, the stripping shaft 53 drives the stripping piece 55 to squeeze the scissor blade 4. At the same time, due to the eccentric shaft hole 551, the stripping piece 55 squeezes the reset pin, so that the reset pin generates pressure toward the scissor blade 4. At this time, the scissor blade 4 is pushed to rotate by the cooperation of the stripping piece 55 and the reset pin. While the scissor blade 4 rotates, the tightening bolt 63 and the spring 61 are compressed, so that the scissor blade 4 is close to the mold end face, and the sliding block 3 is pushed by the main shearing cylinder 1 to perform shearing. The gap between the shearing blade of the scissor blade 4 and the mold end face can be adjusted by matching the reset pin.

[0052] After the shearing is completed, since the stripping piece 55 is in contact with the scissor blade 4, the stripping piece 55 is embedded in the scissor blade 4 and forms a whole with the scissor blade 4. At this time, the stripping piece 55 is driven to rotate again by the stripping cylinder 52, and the stripping piece 55 is pressed to ensure that there is no pressure residue on the scissor blade 4. At the same time, when the stripping piece 55 rotates, the reset pin no longer squeezes the scissor blade 4. At this time, the scissor blade 4 is rotated by the spring 61 rebounding and pulling back bolt 63 to make the cutting edge of the scissor blade 4 move away from the end face of the extrusion die. When the scissor blade 4 returns, the cutting edge will not be dragged to the shearing surface of the extrusion die, thereby effectively improving the flatness of the shearing surface of the extruded profile, improving the shearing accuracy, avoiding the occurrence of mold cavity tearing, preventing the generation of extrusion bubbles, and even causing difficulty in mold closing. In addition, it avoids the scissor blade 4 sticking to aluminum, which leads to difficulty in returning the scissor blade 4.

[0053] In summary, compared with the prior art, the extruder shearing device with automatic retraction function of the present invention has the following advantages and beneficial effects: when the shearing device is shearing, the scissor blades can be close to the end face of the mold, effectively ensuring the shearing quality of the product, and can avoid the shear blades from being dragged onto the shearing surface of the extrusion mold during the shearing return stroke, thereby effectively improving the flatness of the shearing surface of the extruded profile, improving the shearing accuracy, avoiding the occurrence of mold cavity tearing, preventing the generation of extrusion bubbles, and even causing difficulties in mold closing. In addition, it avoids the difficulty of returning the scissor blades due to the scissor blades sticking to aluminum.

[0054] It should be noted that, in this document, unless otherwise expressly specified or limited, the term "connected" or its synonyms should be interpreted broadly. For example, "connected" can mean a fixed or removable connection; a mechanical or electrical connection; a direct connection or an indirect connection through an intermediate medium; or the internal communication between two elements or the interaction between two elements. A person of ordinary skill in the art will understand the specific meanings of these terms in the present invention based on the specific circumstances. Furthermore, expressions such as "first" and "second" are used solely to distinguish one entity or operation from another and do not necessarily require or imply any actual relationship or order between these entities or operations. Furthermore, the terms "comprise," "include," or any other variations thereof are intended to encompass non-exclusive inclusion, such that a process, method, article, or apparatus comprising a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such process, method, article, or apparatus. Furthermore, the terms "front," "rear," "left," "right," "upper," and "lower" herein are used with reference to the positions shown in the accompanying drawings.

[0055] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention, rather than to limit it. Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that they can still modify the technical solutions described in the aforementioned embodiments, or make equivalent replacements for some of the technical features therein. However, these modifications or replacements do not deviate the essence of the corresponding technical solutions from the spirit and scope of the technical solutions of the various embodiments of the present invention.

Claims

1. An extruder shearing device with automatic retraction function, characterized in that: The extruder shearing device with automatic retraction function includes a main shearing cylinder, a main shearing bracket, a sliding block, a scissor blade, a material shifting device, a scissor rotation and retreat mechanism and a die cylinder, wherein the main shearing cylinder is arranged on the top of the main shearing bracket, the sliding block is arranged inside the main shearing bracket and connected to the output end of the main shearing cylinder, the scissor blade is arranged at the lower end of the sliding block, the material shifting device is arranged on one side of the main shearing bracket, the scissor rotation and retreat mechanism is arranged on one side of the lower end of the sliding block and connected to the scissor blade, and the die cylinder is arranged on the main shearing bracket, wherein: The material-dipping device includes a guide rod, a material-dipping oil cylinder, a material-dipping rotating shaft, a rotating shaft seat, a material-dipping piece, a drag chain and a detection device. The guide rod is connected to the rotating shaft of the main shear bracket, the material-dipping oil cylinder is arranged on the guide rod, the detection device is arranged at the connection between the material-dipping rotating shaft and the material-dipping oil cylinder, the rotating shaft seat is arranged at the end of the guide rod, the material-dipping piece is arranged on the material-dipping rotating shaft, and the drag chain drives the guide rod; The scissors rotation and retreat mechanism includes a spring, a spherical combination pad, a bolt and a scissors reset pin, the bolt is connected to the scissor blade and the sliding block, the spring is arranged on the bolt, the spherical combination pad is arranged between the sliding block and the spring, the scissors reset pin passes through the sliding block and the rotating shaft seat, one end of the scissors reset pin abuts against the scissor blade, and the other end of the scissors reset pin abuts against the upper end of the prying piece; An eccentric shaft hole is provided at the upper end of the material shifting piece, and the eccentric shaft hole matches the material shifting shaft; A material shifting groove is provided on one side of the rotating shaft seat, and the material shifting piece is provided in the material shifting groove and passes through the eccentric shaft hole through the material shifting rotating shaft. The eccentric shaft hole and the material shifting rotating shaft are fixed by a connecting key.

2. The extruder shearing device with automatic blade retraction function according to claim 1, characterized in that: A rotation groove is provided on one side of the sliding block, and a rotation platform is provided on the top of the scissor blade. The rotation platform matches the rotation groove, and the scissor blade is installed in the rotation groove through the rotation platform.

3. The extruder shearing device with automatic blade retraction function according to claim 2, characterized in that: Scissor baffles are provided at both ends of the rotating groove, the scissor baffles are fixed to the sliding block by screws, and the scissor baffles are in contact with the rotating platform.

4. The extruder shearing device with automatic blade retraction function according to claim 2, characterized in that: The sliding block is provided with a lubrication hole, which is communicated with the rotation groove.

5. The extruder shearing device with automatic blade retraction function according to claim 1, characterized in that: The material-shifting oil cylinder is connected to the middle rotating shaft of the guide rod, and a connecting piece is provided at the output end of the material-shifting oil cylinder.

6. The extruder shearing device with automatic blade retraction function according to claim 5, characterized in that: One end of the connecting piece and the output end of the material-moving oil cylinder are respectively arranged on both sides of the detection device.

7. The extruder shearing device with automatic blade retraction function according to claim 5, characterized in that: The other end of the connecting piece is fixedly connected to the material-moving shaft, the material-moving shaft matches the shaft seat, the material-moving shaft is inserted into the shaft seat, and the material-moving shaft is connected to the shaft of the shaft seat.

8. The extruder shearing device with automatic blade retraction function according to claim 1, characterized in that: The sliding block is provided with a mounting groove, the bolt passes through the scissor blade and the mounting groove in sequence, the top of the bolt is clamped with the scissor blade, the spherical combination pad and the spring are successively connected in the mounting groove through the bolt, and the end of the bolt is fixed to the spring through a nut.

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