A clamping tool for cylinder sleeve of injection molding machine and use method thereof

Abstract

The invention discloses a clamping fixture for a cylinder sleeve of an injection molding machine and a method for using the same, which relates to the technical field of mechanical processing, and comprises a base, a cutting device and lower side plates symmetrically fixed on both sides of the top of the base, the top of the lower side plates being fixedly connected with a mounting plate, and further comprises: an upper side plate symmetrically fixed on both sides of the top of the mounting plate, the top of the upper side plate being fixedly connected with a top plate; a positioning mechanism arranged in the middle of the top of the mounting plate, an auxiliary mechanism being arranged at the bottom of the mounting plate, the auxiliary mechanism comprising an outer pressure plate and an outer sliding block, the bottom end of the outer sliding block being fixedly connected with a connecting block; a motor fixedly mounted on the inner side of the upper side plate on one side, which solves the problem that the device is only convenient for fixing a single workpiece at a time, is not convenient for simultaneously fixing workpieces of different diameters, reduces the efficiency of workpiece clamping processing, and requires the replacement of different clamping plates when fixing different workpieces, which is cumbersome during installation and disassembly.

Description

Technical Field

[0001] The invention relates to the technical field of mechanical processing, in particular to a clamping tool for a cylinder sleeve of an injection molding machine and a use method thereof. Background Art

[0002] The fixture is used to fix the workpiece during the mechanical manufacturing process so that the workpiece can be processed accurately. The cylinder sleeve of the injection molding machine needs to be clamped with a clamping tool during the production process.

[0003] For example, a centering clamping tool with the announcement number CN218856239U includes a workbench, a gantry frame is fixedly installed on the upper surface of the workbench, a power box is fixedly installed on one side of the gantry frame, a lighting lamp is fixedly installed on the inner side wall of the gantry frame, and a servo motor is fixedly installed on the bottom of the workbench. The centering clamping tool facilitates the replacement of different types of clamps, thereby improving the use range of the device. Through the coordinated arrangement of the servo motor, the transmission rod, the rotating rod and the turntable, when in use, the transmission rod is driven to rotate by the external power supply of the servo motor, and then the rotating rod is driven to rotate by the transmission rod, and then the turntable is driven to rotate by the rotating rod, thereby facilitating the adjustment of the angle of the clamping device. However, the device only fixes the workpiece through two clamps, which is only convenient for fixing a single workpiece at a time, and is not convenient for simultaneously fixing workpieces of different diameters, which reduces the efficiency of the workpiece clamping processing, and has certain defects. In addition, when fixing different workpieces, the device needs to replace different clamps, which is more cumbersome during installation and disassembly, and more inconvenient during use.

[0004] Therefore, we propose a clamping fixture for an injection molding machine cylinder sleeve and a method of using the clamping fixture to solve the above-mentioned problems. Summary of the invention

[0005] The object of the present invention is to provide a clamping fixture for an injection molding machine cylinder sleeve and a method of using the same, so as to solve the problem that the device is only convenient for fixing a single workpiece at a time, is not convenient for simultaneously fixing workpieces of different diameters, reduces the efficiency of the workpiece clamping process, and when the device fixes different workpieces, different clamping plates need to be replaced, which makes installation and disassembly more cumbersome.

[0006] To achieve the above object, the present invention provides the following technical solution: a clamping fixture for a cylinder sleeve of an injection molding machine, comprising a base, a cutting device and lower side plates symmetrically fixed on both sides of the top of the base, wherein the top of the lower side plate is fixedly connected with a mounting plate;

[0007] Also includes:

[0008] The upper side plates are symmetrically fixed on both sides of the top of the mounting plate, and the top of the upper side plates is fixedly connected to the top plate;

[0009] A positioning mechanism is arranged on the top of the mounting plate, and there are no less than three positioning mechanisms. An auxiliary mechanism is arranged at the bottom of the mounting plate, and the auxiliary mechanism includes an outer pressure plate and an outer sliding block. The bottom end of the outer sliding block is fixedly connected with a connecting block;

[0010] A motor is fixedly mounted on the inner side of the upper side plate at one side, an output end of the motor is fixedly connected to a reciprocating screw rod, and the cutting device is mounted on the outer side of the reciprocating screw rod;

[0011] The positioning mechanism comprises an outer cylinder and a threaded rod, the threaded rod is rotatably connected to the mounting plate, a threaded sleeve is sleeved on the outer side of the upper portion of the threaded rod, a limit strip is symmetrically fixed on the outer side of the threaded sleeve, a push inclined block is symmetrically fixed on the outer side of the threaded sleeve, an adjustment groove is symmetrically provided on the inner side of the outer cylinder, a pressing inclined block is slidably connected inside the adjustment groove, and a mounting groove is provided on the side of the pressing inclined block away from the threaded sleeve;

[0012] A spring 1 is fixedly installed inside the mounting groove, and an inner pressure plate is connected to the side of the spring 1 away from the inclined block, a knob is fixedly connected to the bottom end of the threaded rod, and a gear is fixedly connected to the lower part of the threaded rod through the mounting plate, and a limiting sleeve is symmetrically fixed to the bottom of the mounting plate, and a rack is connected inside the limiting sleeve, and the rack is meshed with the gear;

[0013] One end of the limit bar is fixedly connected to a stop block, the other end of the rack is fixedly connected to the connecting block, an inner slide groove is opened on the top of the mounting plate, the inner slide groove is located on both sides of the threaded rod, a guide rod is fixedly connected to the inside of the inner slide groove, an inner slider is slidably connected to the outside of the guide rod, and the top of the inner slider is fixedly connected to the bottom of the inner pressure plate.

[0014] Preferably, the outer cylinder is fixedly connected to the top of the mounting plate, the threaded sleeve is threadedly connected to the threaded rod, limiting grooves are symmetrically provided on the inner side of the outer cylinder, and the limiting strip is slidably connected to the limiting grooves.

[0015] By adopting the above technical scheme, the inner pressure plate is pressed against the inner wall of the cylinder liner, which is convenient for preliminary fixation of the cylinder liner. The outer pressure plates on both sides clamp the outer wall of the cylinder liner, which further improves the clamping effect of the cylinder liner, so as to facilitate the fixation of cylinder liners of different diameters and improve the clamping effect and clamping efficiency.

[0016] Preferably, the two pushing inclined blocks and the two limiting strips are arranged in a cross shape, the two adjusting grooves and the two limiting grooves are arranged in a cross shape, and the inclined surface of the pushing inclined block abuts against the inclined surface of the pressing inclined block.

[0017] By adopting the above technical solution, the limiting groove limits the limiting bar, the threaded sleeve drives the pushing inclined block to squeeze the pressing inclined block, and the pressing inclined block drives the inner pressure plate to move outward through the spring, so as to facilitate the movement and positioning of the inner pressure plate.

[0018] Preferably, one end of the spring one is fixedly connected to the inner wall of the mounting groove, and the other end of the spring one is fixedly connected to the inner pressure plate, and there are no less than two inner pressure plates.

[0019] By adopting the above technical solution, the symmetrically arranged inner pressure plates facilitate positioning and clamping of the cylinder sleeve.

[0020] Preferably, two racks are symmetrically arranged, and the two racks are respectively located on both sides of the gear. A top groove is opened at the bottom of the top plate, and a slide plate is fixedly connected to the top of the cutting device, and the slide plate is slidably connected to the top groove.

[0021] By adopting the above technical solution, when the threaded rod rotates, the threaded rod will drive the gear to rotate counterclockwise, the gear will drive the racks on both sides to rotate, the limit sleeve will limit the rack, the rack will drive the connecting block to move toward the middle, and the connecting block will drive the outer sliding block and the outer pressure plate to move, so that the outer pressure plates on both sides clamp the outer wall of the cylinder sleeve.

[0022] Preferably, a second spring is sleeved on the outer side of the guide rod, and the second spring is located on the side of the inner slider away from the outer cylinder, one end of the second spring is fixedly connected to the inner wall of the inner slide groove, and the other end of the second spring is fixedly connected to the inner slider.

[0023] By adopting the above technical solution, the inner pressure plate drives the inner slider to slide inside the inner slide groove, the inner slider slides on the guide rod, and the inner slider squeezes spring 2, so that the two inner pressure plates are pressed against the inner wall of the cylinder sleeve, which is convenient for preliminary fixation of the cylinder sleeve.

[0024] Preferably, two outer pressure plates are symmetrically arranged, and the outer pressure plates are located on the outside of the inner pressure plate. The inside of the mounting plate is symmetrically provided with outer slide grooves, and the inside of the outer slide grooves is fixedly connected with slide rods, and the outer slide blocks are slidably connected to the slide rods.

[0025] By adopting the above technical solution, the slide bar is used to guide the outer slide block and plays a role in assisting the outer slide block to slide.

[0026] Preferably, the connecting block is located below the mounting plate, the sliding rods are no less than two, the top of the connecting block is symmetrically provided with step grooves, the bottom of the outer sliding block is fixedly connected with a step block, the step block is slidably connected to the step groove, a spring three is fixedly connected inside the step groove, and one end of the spring three is fixedly connected to the step block.

[0027] By adopting the above technical solution, when the outer pressure plate and the outer sliding block are stationary, the limit sleeve can still drive the connecting block to continue to move, the step block slides inside the step groove, and the step block compresses spring three, so that when the outer pressure plate is clamped first, it will not hinder the continued clamping of the inner pressure plate, thereby improving the flexibility of use of the device.

[0028] A method for using a clamping tool for a cylinder sleeve of an injection molding machine, the steps of use are as follows:

[0029] Step 1: Place the cylinder sleeve to be processed on the outside of the inner pressure plate, then turn the knob counterclockwise, the knob drives the threaded rod to rotate, the limit groove limits the limit bar, so that the threaded sleeve rises, the threaded sleeve drives the push inclined block to squeeze the pressed inclined block, the pressed inclined block drives the inner pressure plate to move outward through the spring, the inner pressure plate drives the inner slide block to slide inside the inner slide groove, and the inner slide block slides on the guide rod;

[0030] Step 2: The inner slider will also squeeze the spring 2, so that the two inner pressure plates are pressed against the inner wall of the cylinder sleeve, which is convenient for preliminary fixation of the cylinder sleeve. When the threaded rod rotates, the threaded rod will drive the gear to rotate counterclockwise, and the gear drives the racks on both sides to rotate. The limit sleeve limits the rack, and the rack drives the connecting block to move toward the middle. The connecting block drives the outer slider and the outer pressure plate to move, so that the outer pressure plates on both sides clamp the outer wall of the cylinder sleeve, further improving the clamping effect of the cylinder sleeve, so as to fix cylinder sleeves of different diameters. The positioning mechanism is provided with multiple groups, which is convenient for clamping cylinder sleeves of different sizes at the same time, and there is no need to disassemble and replace the clamping plate, thereby improving the clamping effect and clamping efficiency.

[0031] Step 3: When the knob is turned to drive the threaded rod and the gear to rotate, so that the inner pressure plate clamps the inner wall of the cylinder liner, if the limit sleeve drives the connecting block and the outer slider to move, so that the outer pressure plate does not clamp the outer wall of the cylinder liner, and the cylinder liner is fixed only by the inner pressure plate, it can also play a fixed clamping effect and will not hinder the subsequent processing of the cylinder liner;

[0032] Step 4: If the inner pressure plate does not clamp the inner wall of the cylinder liner, and the outer pressure plate clamps the outer wall of the cylinder liner, the inner pressure plate continues to move outward by turning the knob. At this time, the outer pressure plate and the outer sliding block do not move, and the limit sleeve can still drive the connecting block to continue to move. The step block slides inside the step groove, and the step block compresses spring three, so that when the outer pressure plate is clamped first, it will not hinder the continued clamping of the inner pressure plate, thereby improving the flexibility of the device.

[0033] Compared with the prior art, the invention has the following beneficial effects: a positioning mechanism is provided, two inner pressure plates are pressed against the inner wall of the cylinder sleeve, which is convenient for preliminary fixing of the cylinder sleeve, and the outer pressure plates on both sides clamp the outer wall of the cylinder sleeve, which further improves the clamping effect of the cylinder sleeve, so as to facilitate the fixing of cylinder sleeves of different diameters, and improve the clamping effect and clamping efficiency;

[0034] 1. A positioning mechanism is provided, and the cylinder sleeve to be processed is placed on the outside of the inner pressure plate. Then, the knob is turned counterclockwise, and the knob drives the threaded rod to rotate. The limit groove limits the limit bar, so that the threaded sleeve rises, and the threaded sleeve drives the inclined block to squeeze the inclined block. The inclined block drives the inner pressure plate to move outward through spring 1. The inner pressure plate drives the inner slider to slide inside the inner slide groove. The inner slider slides on the guide rod, and the inner slider squeezes spring 2, so that the two inner pressure plates are pressed against the inner wall of the cylinder sleeve, which is convenient for preliminary fixation of the cylinder sleeve. When the threaded rod rotates, the threaded rod drives the gear to rotate counterclockwise, and the gear drives the racks on both sides to rotate. The limit sleeve is pressed against the rack The rack drives the connecting block to move toward the middle, and the connecting block drives the outer sliding block and the outer pressure plate to move, so that the outer pressure plates on both sides clamp the outer wall of the cylinder sleeve, further improving the clamping effect of the cylinder sleeve, so as to facilitate the fixing of cylinder sleeves of different diameters, and the positioning mechanism is provided with multiple groups, which is convenient for clamping cylinder sleeves of different sizes at the same time, and there is no need to disassemble and replace the clamping plate, thereby improving the clamping effect and clamping efficiency, and solving the problem that the device is only convenient for fixing a single workpiece at a time, and is not convenient for fixing workpieces of different diameters at the same time, reducing the efficiency of workpiece clamping processing, and the device needs to replace different clamping plates when fixing different workpieces, and the installation and disassembly are more cumbersome.

[0035] 2. An auxiliary mechanism is provided. Due to the difference in the size of the cylinder sleeve, when the knob is turned to drive the threaded rod and the gear to rotate, so that the inner pressure plate clamps the inner wall of the cylinder sleeve, if the limit sleeve drives the connecting block and the outer sliding block to move at this time, so that the outer pressure plate does not clamp the outer wall of the cylinder sleeve, and the cylinder sleeve is fixed only by the inner pressure plate, it can also play a fixed clamping effect and will not hinder the subsequent processing of the cylinder sleeve; if the inner pressure plate does not clamp the inner wall of the cylinder sleeve, and the outer pressure plate clamps the outer wall of the cylinder sleeve, the inner pressure plate continues to move outward by turning the knob. At this time, the outer pressure plate and the outer sliding block do not move, and the limit sleeve can still drive the connecting block to continue to move, and the step block slides inside the step groove, and the step block compresses spring three, so that when the outer pressure plate is clamped first, it will not hinder the continued clamping of the inner pressure plate, thereby improving the flexibility of the device. BRIEF DESCRIPTION OF THE DRAWINGS

[0036] Figure 1 It is a schematic diagram of the first three-dimensional overall structure of the present invention;

[0037] Figure 2 It is a schematic diagram of the cross-sectional structure of the upper side plate and the top plate of the present invention;

[0038] Figure 3 This is a schematic diagram of the top view of the mounting plate of the present invention;

[0039] Figure 4 This is a schematic diagram of the cross-sectional structure of the outer cylinder of the present invention;

[0040] Figure 5 For the present invention Figure 4The enlarged structural diagram at A in the middle;

[0041] Figure 6 For the present invention Figure 4 The enlarged structural diagram at B in the middle;

[0042] Figure 7 This is a schematic diagram of the cross-sectional structure of the mounting plate of the present invention;

[0043] Figure 8 For the present invention Figure 7 The enlarged structural diagram at C in the middle;

[0044] Fig. 9 It is a schematic diagram of the positioning mechanism structure of the present invention;

[0045] Fig.10 For the present invention Fig. 9 The enlarged structural diagram at D in the middle;

[0046] Fig.11 It is a schematic diagram of the second three-dimensional overall structure of the present invention.

[0047] In the figure: 1, base; 2, lower side plate; 3, mounting plate; 4, upper side plate; 5, top plate; 6, positioning mechanism; 61, outer cylinder; 62, threaded rod; 63, threaded sleeve; 64, limit groove; 65, limit strip; 66, push inclined block; 67, adjustment groove; 68, close inclined block; 69, mounting groove; 610, spring 1; 611, inner pressure plate; 612, knob; 613, gear; 614, limit sleeve ; 615, rack; 616, stopper; 617, inner slide groove; 618, guide rod; 619, inner slider; 620, spring two; 7, auxiliary mechanism; 71, outer pressure plate; 72, outer slider; 73, connecting block; 74, outer slide groove; 75, slide rod; 76, step groove; 77, step block; 78, spring three; 8, motor; 9, reciprocating screw; 10, cutting equipment; 11, top groove; 12, slide plate. DETAILED DESCRIPTION

[0048] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. 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 creative work are within the scope of protection of the present invention.

[0049] See also Figure 1-Figure 11 The present invention provides a technical solution: a clamping fixture for a cylinder sleeve of an injection molding machine, comprising a base 1, a cutting device 10 and lower side plates 2 symmetrically fixed on both sides of the top of the base 1, and a mounting plate 3 is fixedly connected to the top of the lower side plate 2;

[0050] It is characterized by further comprising:

[0051] The upper side plates 4 are symmetrically fixed on both sides of the top of the mounting plate 3, and the top of the upper side plates 4 is fixedly connected with the top plate 5;

[0052] A positioning mechanism 6 is arranged on the top of the mounting plate 3, and there are no less than three positioning mechanisms 6;

[0053] The motor 8 is fixedly mounted on the inner side of the upper side plate 4, the output end of the motor 8 is fixedly connected to the reciprocating screw rod 9, and the cutting device 10 is mounted on the outer side of the reciprocating screw rod 9;

[0054] The positioning mechanism 6 includes an outer cylinder 61 and a threaded rod 62, the threaded rod 62 is rotatably connected to the mounting plate 3, a threaded sleeve 63 is sleeved on the outer side of the upper part of the threaded rod 62, a limit strip 65 is symmetrically fixed on the outer side of the threaded sleeve 63, a push inclined block 66 is symmetrically fixed on the outer side of the threaded sleeve 63, an adjustment groove 67 is symmetrically opened on the inner side of the outer cylinder 61, a pressing inclined block 68 is slidably connected inside the adjustment groove 67, and a mounting groove 69 is opened on the side of the pressing inclined block 68 away from the threaded sleeve 63;

[0055] The outer cylinder 61 is fixedly connected to the top of the mounting plate 3 , the threaded sleeve 63 is threadedly connected to the threaded rod 62 , and the inner side of the outer cylinder 61 is symmetrically provided with limiting grooves 64 , and the limiting strips 65 are slidably connected to the limiting grooves 64 .

[0056] The two push inclined blocks 66 and the two limit bars 65 are arranged in a cross shape, the two adjustment grooves 67 and the two limit grooves 64 are arranged in a cross shape, and the inclined surface of the push inclined block 66 abuts against the inclined surface of the abutting inclined block 68 .

[0057] A spring 610 is fixedly installed inside the mounting groove 69, and an inner pressure plate 611 is connected to the side of the spring 610 away from the inclined block 68. A knob 612 is fixedly connected to the bottom end of the threaded rod 62, and a gear 613 is fixedly connected to the lower part of the threaded rod 62 through the mounting plate 3. A limiting sleeve 614 is symmetrically fixed to the bottom of the mounting plate 3, and a rack 615 is connected to the inside of the limiting sleeve 614, which is meshed with the gear 613.

[0058] One end of the spring 1 610 is fixedly connected to the inner wall of the mounting groove 69 , and the other end of the spring 1 610 is fixedly connected to the inner pressure plate 611 , and there are no less than two inner pressure plates 611 .

[0059] One end of the limit bar 65 is fixedly connected to a stop block 616, and the other end of the rack 615 is fixedly connected to the connecting block 73. An inner slide groove 617 is provided on the top of the mounting plate 3, and the inner slide groove 617 is located on both sides of the threaded rod 62. The inside of the inner slide groove 617 is fixedly connected to a guide rod 618, and the outer side of the guide rod 618 is slidably connected to an inner slider 619. The top of the inner slider 619 is fixedly connected to the bottom of the inner pressure plate 611.

[0060] Two racks 615 are symmetrically arranged, and the two racks 615 are respectively located on both sides of the gear 613. A top groove 11 is opened at the bottom of the top plate 5. A slide plate 12 is fixedly connected to the top of the cutting device 10, and the slide plate 12 is slidably connected to the top groove 11.

[0061] A spring 2 620 is sleeved on the outer side of the guide rod 618 , and the spring 2 620 is located on the side of the inner slider 619 away from the outer cylinder 61 . One end of the spring 2 620 is fixedly connected to the inner wall of the inner slide groove 617 , and the other end of the spring 2 620 is fixedly connected to the inner slider 619 .

[0062] Embodiment 1: Figure 2-Figure 8 and Fig.11 As shown, a positioning mechanism 6 is provided, and the cylinder sleeve to be processed is placed on the outer side of the inner pressure plate 611. Then, the knob 612 is turned counterclockwise, and the knob 612 drives the threaded rod 62 to rotate, and the limiting groove 64 limits the limiting bar 65, so that the threaded sleeve 63 rises, and the threaded sleeve 63 drives the pushing inclined block 66 to squeeze the inclined block 68, and the inclined block 68 drives the inner pressure plate 611 to move outward through the spring 1 610, and the inner pressure plate 611 drives the inner slide block 619 to slide inside the inner slide groove 617, and the inner slide block 619 slides on the guide rod 618.

[0063] The inner slider 619 will also squeeze the spring 2 620, so that the two inner pressure plates 611 are pressed against the inner wall of the cylinder sleeve, which is convenient for preliminary fixation of the cylinder sleeve. When the threaded rod 62 rotates, the threaded rod 62 will drive the gear 613 to rotate counterclockwise, and the gear 613 drives the racks 615 on both sides to rotate. The limiting sleeve 614 limits the rack 615, and the rack 615 drives the connecting block 73 to move toward the middle. The connecting block 73 drives the outer slider 72 and the outer pressure plate 71 to move, so that the outer pressure plates 71 on both sides clamp the outer wall of the cylinder sleeve, further improving the clamping effect of the cylinder sleeve, so as to fix cylinder sleeves of different diameters.

[0064] The positioning mechanism 6 is provided with multiple groups, which is convenient for clamping cylinder liners of different sizes at the same time. There is no need to disassemble and replace the clamping plates, which improves the clamping effect and clamping efficiency. It solves the problem that the device is only convenient for fixing a single workpiece at a time, is not convenient for fixing workpieces of different diameters at the same time, reduces the efficiency of workpiece clamping processing, and the device needs to replace different clamping plates when fixing different workpieces, which is cumbersome during installation and disassembly.

[0065] An auxiliary mechanism 7 is provided at the bottom of the mounting plate 3, and the auxiliary mechanism 7 includes an outer pressure plate 71 and an outer sliding block 72. The bottom end of the outer sliding block 72 is fixedly connected with a connecting block 73. Two outer pressure plates 71 are symmetrically provided. The outer pressure plates 71 are located on the outside of the inner pressure plate 611. The inside of the mounting plate 3 is symmetrically provided with outer sliding grooves 74. The inside of the outer sliding grooves 74 is fixedly connected with a sliding rod 75. The outer sliding block 72 is slidably connected to the sliding rod 75.

[0066] The connecting block 73 is located below the mounting plate 3, and there are no less than two sliding rods 75. Step grooves 76 are symmetrically provided on the top of the connecting block 73. A step block 77 is fixedly connected to the bottom of the outer sliding block 72. The step block 77 is slidably connected to the step groove 76. A spring three 78 is fixedly connected inside the step groove 76, and one end of the spring three 78 is fixedly connected to the step block 77.

[0067] Embodiment 2: Figure 1 and Figure 9-10 As shown, an auxiliary mechanism 7 is provided. Due to the difference in the size of the cylinder sleeve, when the knob 612 is turned to drive the threaded rod 62 and the gear 613 to rotate, so that the inner pressure plate 611 clamps the inner wall of the cylinder sleeve, if the limit sleeve 614 drives the connecting block 73 and the outer sliding block 72 to move at this time, so that the outer pressure plate 71 does not clamp the outer wall of the cylinder sleeve, and only fixes the cylinder sleeve through the inner pressure plate 611, it can also achieve the effect of fixing and clamping, and will not hinder the subsequent processing of the cylinder sleeve.

[0068] If the inner pressure plate 611 does not clamp the inner wall of the cylinder sleeve, and the outer pressure plate 71 clamps the outer wall of the cylinder sleeve, the inner pressure plate 611 continues to move outward by turning the knob 612. At this time, the outer pressure plate 71 and the outer sliding block 72 are stationary, and the limiting sleeve 614 can still drive the connecting block 73 to continue to move. The step block 77 slides inside the step groove 76, and the step block 77 compresses the spring three 78, so that when the outer pressure plate 71 is clamped first, it will not hinder the continued clamping of the inner pressure plate 611, thereby improving the flexibility of the device.

[0069] Working principle: When using the device, first, Figure 1-Figure 11 As shown, the cylinder sleeve to be processed is placed on the outer side of the inner pressure plate 611, and then the knob 612 is turned counterclockwise. The knob 612 drives the threaded rod 62 to rotate, and the limit groove 64 limits the limit bar 65, so that the threaded sleeve 63 rises, and the threaded sleeve 63 drives the pushing inclined block 66 to squeeze the inclined block 68. The inclined block 68 drives the inner pressure plate 611 to move outward through the spring 610, and the inner pressure plate 611 drives the inner sliding block 619 to slide inside the inner sliding groove 617, and the inner sliding block 619 slides on the guide rod 618.

[0070] The inner slider 619 will also squeeze the spring 2 620, so that the two inner pressure plates 611 are pressed against the inner wall of the cylinder sleeve, which is convenient for preliminary fixation of the cylinder sleeve. When the threaded rod 62 rotates, the threaded rod 62 will drive the gear 613 to rotate counterclockwise, and the gear 613 drives the racks 615 on both sides to rotate. The limiting sleeve 614 limits the rack 615, and the rack 615 drives the connecting block 73 to move toward the middle. The connecting block 73 drives the outer slider 72 and the outer pressure plate 71 to move, so that the outer pressure plates 71 on both sides clamp the outer wall of the cylinder sleeve, further improving the clamping effect of the cylinder sleeve, so as to fix the cylinder sleeves of different diameters, and the positioning mechanism 6 is provided with multiple groups, which is convenient for clamping cylinder sleeves of different sizes at the same time, without the need to disassemble and replace the clamping plates, thereby improving the clamping effect and clamping efficiency.

[0071] When the knob 612 is turned to drive the threaded rod 62 and the gear 613 to rotate, so that the inner pressure plate 611 clamps the inner wall of the cylinder liner, if at this time the limit sleeve 614 drives the connecting block 73 and the outer sliding block 72 to move, so that the outer pressure plate 71 does not clamp the outer wall of the cylinder liner, and only fixes the cylinder liner through the inner pressure plate 611, it can also achieve the effect of fixing and clamping, and will not hinder the subsequent processing of the cylinder liner.

[0072] If the inner pressure plate 611 does not clamp the inner wall of the cylinder sleeve, and the outer pressure plate 71 clamps the outer wall of the cylinder sleeve, the inner pressure plate 611 continues to move outward by turning the knob 612. At this time, the outer pressure plate 71 and the outer sliding block 72 are stationary, and the limiting sleeve 614 can still drive the connecting block 73 to continue to move. The step block 77 slides inside the step groove 76, and the step block 77 compresses the spring three 78, so that when the outer pressure plate 71 is clamped first, it will not hinder the continued clamping of the inner pressure plate 611, thereby improving the flexibility of the device.

[0073] The contents not described in detail in this specification belong to the prior art known to professional and technical personnel in this field.

[0074] Although the present invention has been described in detail with reference to the aforementioned embodiments, it is still possible for those skilled in the art to modify the technical solutions described in the aforementioned embodiments, or to make equivalent substitutions for some of the technical features therein. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

Claims

1. A clamping fixture for a cylinder sleeve of an injection molding machine, comprising a base (1), a cutting device (10), and lower side plates (2) symmetrically fixed to both sides of the top of the base (1), wherein the top of the lower side plates (2) is fixedly connected to a mounting plate (3); It is characterized in that Also includes: An upper side plate (4) is symmetrically fixed on both sides of the top of the mounting plate (3), and the top of the upper side plate (4) is fixedly connected to the top plate (5); A positioning mechanism (6) is arranged on the top of the mounting plate (3), and the number of the positioning mechanisms (6) is not less than three. An auxiliary mechanism (7) is arranged at the bottom of the mounting plate (3), and the auxiliary mechanism (7) comprises an outer pressure plate (71) and an outer sliding block (72). The bottom end of the outer sliding block (72) is fixedly connected to a connecting block (73); A motor (8) is fixedly mounted on the inner side of the upper side plate (4) on one side, an output end of the motor (8) is fixedly connected to a reciprocating screw rod (9), and the cutting device (10) is mounted on the outer side of the reciprocating screw rod (9); The positioning mechanism (6) comprises an outer cylinder (61) and a threaded rod (62), the threaded rod (62) being rotatably connected to the mounting plate (3), a threaded sleeve (63) being sleeved on the outer side of the upper portion of the threaded rod (62), a limit strip (65) being symmetrically fixed on the outer side of the threaded sleeve (63), a push inclined block (66) being symmetrically fixed on the outer side of the threaded sleeve (63), an adjustment groove (67) being symmetrically provided on the inner side of the outer cylinder (61), a pressing inclined block (68) being slidably connected inside the adjustment groove (67), and a mounting groove (69) being provided on a side of the pressing inclined block (68) away from the threaded sleeve (63); A spring 1 (610) is fixedly installed inside the mounting groove (69), and an inner pressure plate (611) is connected to the side of the spring 1 (610) away from the inclined block (68). A knob (612) is fixedly connected to the bottom end of the threaded rod (62), and a gear (613) is fixedly connected to the lower part of the threaded rod (62) through the mounting plate (3). A limiting sleeve (614) is symmetrically fixed to the bottom of the mounting plate (3), and a rack (615) is connected to the inside of the limiting sleeve (614), and the rack (615) is meshingly connected to the gear (613); One end of the limit bar (65) is fixedly connected to a stopper (616), the other end of the rack (615) is fixedly connected to the connection block (73), the top of the mounting plate (3) is provided with an inner slide groove (617), the inner slide groove (617) is located on both sides of the threaded rod (62), the interior of the inner slide groove (617) is fixedly connected to a guide rod (618), the outer side of the guide rod (618) is slidably connected to an inner slide block (619), the top end of the inner slide block (619) is fixedly connected to the bottom of the inner pressure plate (611); A second spring (620) is sleeved on the outer side of the guide rod (618), and the second spring (620) is located on a side of the inner slide block (619) away from the outer cylinder (61), one end of the second spring (620) is fixedly connected to the inner wall of the inner slide groove (617), and the other end of the second spring (620) is fixedly connected to the inner slide block (619); Two outer pressure plates (71) are symmetrically arranged, and the outer pressure plates (71) are located outside the inner pressure plate (611). The interior of the mounting plate (3) is symmetrically provided with outer sliding grooves (74), and the interior of the outer sliding grooves (74) is fixedly connected with a sliding rod (75), and the outer sliding block (72) is slidably connected to the sliding rod (75); The connecting block (73) is located below the mounting plate (3), the sliding rods (75) are not less than two, the top of the connecting block (73) is symmetrically provided with step grooves (76), the bottom of the outer sliding block (72) is fixedly connected with a step block (77), the step block (77) is slidably connected to the step groove (76), the inside of the step groove (76) is fixedly connected with a spring three (78), one end of the spring three (78) is fixedly connected to the step block (77).

2. The clamping fixture for the cylinder sleeve of an injection molding machine according to claim 1, characterized in that: The outer cylinder (61) is fixedly connected to the top of the mounting plate (3), the threaded sleeve (63) is threadedly connected to the threaded rod (62), the inner side of the outer cylinder (61) is symmetrically provided with limiting grooves (64), and the limiting strip (65) is slidably connected to the limiting grooves (64).

3. The clamping fixture for the cylinder sleeve of an injection molding machine according to claim 2, characterized in that: The two pushing inclined blocks (66) and the two limiting strips (65) are arranged in a cross shape, the two adjusting grooves (67) and the two limiting grooves (64) are arranged in a cross shape, and the inclined surface of the pushing inclined block (66) abuts against the inclined surface of the abutting inclined block (68).

4. The clamping fixture for the cylinder sleeve of an injection molding machine according to claim 3, characterized in that: One end of the spring one (610) is fixedly connected to the inner wall of the mounting groove (69), and the other end of the spring one (610) is fixedly connected to the inner pressure plate (611), and there are no less than two inner pressure plates (611).

5. The clamping fixture for the cylinder sleeve of an injection molding machine according to claim 4, characterized in that: Two racks (615) are symmetrically arranged, and the two racks (615) are respectively located on both sides of the gear (613). A top groove (11) is provided at the bottom of the top plate (5). A slide plate (12) is fixedly connected to the top of the cutting device (10), and the slide plate (12) is slidably connected to the top groove (11).

6. A method for using a clamping tool for a cylinder sleeve of an injection molding machine, characterized in that: The clamping fixture for the cylinder sleeve of an injection molding machine as described in claim 5 is used, and the steps of using the clamping fixture are as follows: Step 1: Place the cylinder sleeve to be processed on the outside of the inner pressure plate (611), then rotate the knob (612) counterclockwise, the knob (612) drives the threaded rod (62) to rotate, the limiting groove (64) limits the limiting bar (65), so that the threaded sleeve (63) rises, the threaded sleeve (63) drives the pushing inclined block (66) to squeeze the inclined block (68), the inclined block (68) drives the inner pressure plate (611) to move outward through the spring 1 (610), the inner pressure plate (611) drives the inner slide block (619) to slide inside the inner slide groove (617), and the inner slide block (619) slides on the guide rod (618); Step 2: The inner slider (619) also compresses the second spring (620), so that the two inner pressure plates (611) are pressed against the inner wall of the cylinder sleeve, which is convenient for preliminary fixing of the cylinder sleeve. When the threaded rod (62) rotates, the threaded rod (62) drives the gear (613) to rotate counterclockwise, and the gear (613) drives the racks (615) on both sides to rotate. The limiting sleeve (614) limits the rack (615), and the rack (615) drives the connecting block (73) to move toward the middle. The connecting block (73) drives the outer slider (72) and the outer pressure plate (71) to move, so that the outer pressure plates (71) on both sides clamp the outer wall of the cylinder sleeve, further improving the clamping effect of the cylinder sleeve, so as to facilitate the fixing of cylinder sleeves of different diameters. In addition, multiple groups of positioning mechanisms are provided, so as to facilitate the clamping of cylinder sleeves of different sizes at the same time. There is no need to disassemble and replace the clamping plates, thereby improving the clamping effect and clamping efficiency. Step 3: When the knob (612) is turned to drive the threaded rod (62) and the gear (613) to rotate, so that the inner pressure plate (611) clamps the inner wall of the cylinder sleeve, if the limit sleeve (614) drives the connecting block (73) and the outer sliding block (72) to move, so that the outer pressure plate (71) does not clamp the outer wall of the cylinder sleeve, and the cylinder sleeve is fixed only by the inner pressure plate (611), the fixing and clamping effect can also be achieved, and the subsequent processing of the cylinder sleeve will not be hindered; Step 4: If the inner pressure plate (611) does not clamp the inner wall of the cylinder sleeve, and the outer pressure plate (71) clamps the outer wall of the cylinder sleeve, the knob (612) is then turned to allow the inner pressure plate (611) to continue to move outward. At this time, the outer pressure plate (71) and the outer sliding block (72) are stationary, and the limiting sleeve (614) can still drive the connecting block (73) to continue to move. The step block (77) slides inside the step groove (76), and the step block (77) compresses the spring three (78), so that when the outer pressure plate (71) is clamped first, it will not hinder the continued clamping of the inner pressure plate (611), thereby improving the flexibility of the device.

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