A quick-detachable top block fixing structure for injection molds

Abstract

The present invention provides a quick-detachable top block fixing structure for an injection mold, which relates to the technical field of injection molds and comprises: an assembly seat, four groups of hydraulic cylinders are fixedly provided on the rear side of the assembly seat, and a stretching seat is fixedly provided on the front side of the telescopic end of the four groups of hydraulic cylinders; a connecting rod is fixedly provided in front of the stretching seat; a toothed disc according to each embodiment of the present invention provides a combined structure for synchronous and quick control of disassembly and assembly, and the dial frame is rotated to drive the toothed disc to rotate the toothed ring, and the toothed ring drives the rotating sleeve to rotate as a whole, and then the positioning bar drives the rotating rod to rotate, and the front end screw part of the rotating rod is fixedly connected to the rear end of the square edge top block; when an individual rotating rod is not tightened, the reverse push screw unlocks the positioning bar, and the rotating rod can be adjusted individually, which is easy to operate and can achieve multiple adjustments, thereby solving the problem that the existing top block fixing structure lacks a combined structure for synchronous and quick control of disassembly and assembly.

Description

Technical Field

[0001] The invention relates to the technical field of injection molds, and in particular to a quick-detachable top block fixing structure for an injection mold. Background Art

[0002] Injection molds are tools used in the plastics processing industry to match plastic molding machines and give plastic products a complete configuration and precise dimensions. They have a top block structure inside, which automatically ejects the workpiece and causes it to fall when the mold is expanded.

[0003] However, the currently used ejector block fixing structure is mainly assembled by bolts, and then the ejector block is used to eject the workpiece during the process of separating the mold. It lacks a combined structure for synchronous and rapid control of disassembly and assembly, which is not conducive to rapid disassembly of the ejector block for replacement and rapid processing. Summary of the Invention

[0004] In view of this, the present invention provides a quick-detachable top block fixing structure for an injection mold, which has an oscillator and provides an effect of knocking the mold, thereby preventing the workpiece from sticking to the mold.

[0005] The present invention provides a quick-detachable top block fixing structure for an injection mold, which specifically comprises: an assembly seat, four groups of hydraulic cylinders are fixedly arranged on the rear side of the assembly seat, and a stretching seat is fixedly arranged on the front side of the telescopic ends of the four groups of hydraulic cylinders; a connecting rod is fixedly arranged in front of the stretching seat; a fixing seat, the fixing seat is slidably arranged on the outside of the connecting rod, and the fixing seat is a T-stage structure; a square edge top block, the square edge top block is fixedly arranged on the front side of the fixing seat, and the front side of the square edge top block is integrally provided with a top block rod; an intermediate fixing pile, the intermediate fixing pile is fixedly arranged It is placed in the middle of the rear side of the fixed seat; a hexagonal sliding column is slidingly set on the rear side of the middle fixed pile, and a cross-shaped frame is fixedly set at the rear end of the hexagonal sliding column; a gear disc, the gear disc is rotatably set on the rear side of the cross-shaped frame; a dial frame is fixedly set on the rear side of the gear disc; a rotating sleeve, the outer side of the rotating sleeve is integrally provided with a concave ring, and the front end of the concave ring is rotatably set in the middle of the side of the cross-shaped frame; a rotating rod, the rotating rod is rotatably set in the rotating sleeve with three sets of waterproof bearings; an oscillator, the oscillator is slidably set on the outside of the top block rod, and a spring is provided on the outer sleeve of the top block rod.

[0006] Optionally, the fixing seat includes: racks, four groups of racks are fixedly provided on the front side of the fixing seat, and the outside of the racks is a sliding bar structure.

[0007] Optionally, the rotating sleeve also includes: a gear ring, which is fixedly provided on the outer rear side of the concave ring; an oil hole, which is opened on the front inner wall of the rotating sleeve, and the oil hole is located between the two sets of waterproof bearings; a micro hydraulic rod, which is integrally provided with a micro hydraulic rod on the inner wall of the concave ring, and a positioning strip is fixedly provided on the telescopic end of the micro hydraulic rod; the micro hydraulic rod is connected to the oil hole through the inner wall of the rotating sleeve.

[0008] Optionally, the toothed disc is engaged with four sets of toothed rings, and the number of teeth on the toothed disc is five times that of the toothed rings.

[0009] Optionally, the rotating rod includes: an advancing screw, the rear end of the rotating rod is threadedly connected to the advancing screw; the rear end of the advancing screw is a hand-rubbing pile, and the rear side of the hand-rubbing pile is a straight groove structure; a discharge hole, the middle of the rotating rod is a slide groove structure, and the front side of the slide groove structure is provided with a discharge hole, and the discharge hole is connected to the oil hole; a piston block, a piston block is slidingly provided inside the rotating rod, and a spring is provided at the front end of the piston block.

[0010] Optionally, the front end of the rotating rod is a screw structure, and the front end of the rotating rod is threadedly connected to the rear side of the square edge top block; the outer portion of the rotating rod aligned with the concave ring is set as a gear ring structure.

[0011] Optionally, the oscillator includes: a transmission groove, a transmission groove is opened in the middle of the oscillator, and a fixed block is fixedly provided on the middle rear side of the transmission groove; a protruding frame, protruding frames are fixedly provided at both ends of the rear side of the transmission groove, two sets of driven gears are rotatably provided in the protruding frames on both sides, and an eccentric rod is fixedly provided in the middle of the two sets of driven gears; a bar frame, the bar frame slides on the outside of the eccentric rod, and a telescopic knocking rod is fixedly provided at the front end of the bar frame; a spring is provided on the outside of the part where the front end of the telescopic knocking rod passes through the fixed block.

[0012] Optionally, the sliding bar structure of the rack fits and slides in the transmission groove, and the rack is meshed with the driven gear.

[0013] Beneficial effects

[0014] The toothed discs according to the various embodiments of the present invention provide a combined structure for synchronous and rapid control of assembly and disassembly. By rotating the dial frame, the toothed disc drives the toothed ring to rotate, and the toothed ring drives the rotating sleeve to rotate as a whole, and then the positioning bar drives the rotating rod to rotate, and the front end screw portion of the rotating rod is fixedly connected to the rear end of the square edge top block; when individual rotating rods are not tightened, the positioning bar is unlocked by reversing the advancing screw, and the rotating rods can be adjusted individually. The operation is convenient and multiple adjustments can be achieved.

[0015] In addition, the setting of the rotating rod provides a controlled locking effect. By turning the advancing screw, the advancing screw moves forward in conjunction with the threaded transmission, and the advancing screw drives the piston block to move forward, discharging the oil in the rotating rod through the discharge hole, and then passing through the oil hole into the inner wall of the rotating sleeve, expanding the micro hydraulic rod, and inserting the positioning strip on the outside of the gear ring structure of the rotating rod to achieve radial fixation. After unlocking, the rotating rod can be rotated alone without affecting the adjustment.

[0016] In addition, the setting of the oscillator provides an auxiliary effect for demoulding. The hydraulic cylinder is contracted during demoulding. During the contraction of the hydraulic cylinder, the connecting rod pulls the mold apart. During this process, the rack drives the two sets of driven gears to rotate, and the two sets of driven gears drive the eccentric rod to rotate. The eccentric rod cooperates with the bar frame to drive the telescopic knocking rod to move back and forth, and then the telescopic knocking rod knocks the mold for pre-demolding, and then the frame is turned to contact the assembly seat to push open the fixed seat, and the ejector rod pushes the workpiece to make it detach, realizing automatic demoulding. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings of the embodiments are briefly introduced below.

[0018] The drawings described below only relate to some embodiments of the present invention, but are not intended to limit the present invention.

[0019] In the attached figure:

[0020] Figure 1 A schematic diagram of a mold positioning structure according to an embodiment of the present invention is shown;

[0021] Figure 2 It shows an axonometric structural diagram according to an embodiment of the present invention;

[0022] Figure 3 It shows a schematic diagram of a three-dimensional cross-sectional structure according to an embodiment of the present invention;

[0023] Figure 4 It shows an axonometric cross-sectional structural schematic diagram according to an embodiment of the present invention;

[0024] Figure 5 A schematic diagram of the transmission structure of the middle fixed pile according to an embodiment of the present invention is shown;

[0025] Figure 6 It shows a schematic diagram of a three-dimensional cross-sectional structure of a rotating sleeve according to an embodiment of the present invention;

[0026] Figure 7 A schematic diagram of the three-dimensional structure of an oscillator according to an embodiment of the present invention is shown;

[0027] Figure 8 FIG. 1 shows an isometric structural diagram of an oscillator according to an embodiment of the present invention.

[0028] Reference Signs List

[0029] 1. Assembly seat; 101. Hydraulic cylinder; 102. Stretching seat; 103. Connecting rod; 2. Fixed seat; 201. Rack; 3. Square edge top block; 301. Top block rod; 4. Intermediate fixed pile; 401. Hexagonal sliding column; 402. Cross frame; 5. Toothed plate; 501. Rotating frame; 6. Rotating sleeve; 601. Concave ring; 602. Gear ring; 603. Oil hole; 604. Micro hydraulic rod; 605. Positioning strip; 7. Rotating rod; 701. Advance screw; 702. Discharge hole; 703. Piston block; 8. Oscillator; 801. Transmission groove; 802. Fixed block; 803. Protruding frame; 804. Driven gear; 805. Eccentric rod; 806. Bar frame; 807. Telescopic knocking rod. DETAILED DESCRIPTION

[0030] In order to make the purpose, scheme and advantages of the technical solution of the present invention more clear, the technical solution of the embodiment of the present invention will be clearly and completely described below in conjunction with the drawings of specific embodiments of the present invention. Unless otherwise specified, the terms used herein have the common meanings in the art. The same reference numerals in the drawings represent the same components.

[0031] Example: Please refer to Figures 1 to 8 :

[0032] The present invention proposes a quick-detachable top block fixing structure for an injection mold, comprising: an assembly base 1, four groups of hydraulic cylinders 101 are fixedly arranged on the rear side of the assembly base 1, and a stretching base 102 is fixedly arranged on the front side of the telescopic end of the four groups of hydraulic cylinders 101; a connecting rod 103 is fixedly arranged in front of the stretching base 102; a fixed base 2, the fixed base 2 is slidably arranged on the outside of the connecting rod 103, and the fixed base 2 is a T-stage structure; a square edge top block 3, the square edge top block 3 is fixedly arranged on the front side of the fixed base 2, and a top block rod 301 is integrally arranged on the front side of the square edge top block 3; an intermediate fixing pile 4, the intermediate fixing pile 4 is fixedly arranged on the fixed base 2 in the middle of the rear side; a hexagonal sliding column 401 is slidingly provided on the rear side of the middle fixed pile 4, and a cross frame 402 is fixedly provided on the rear end of the hexagonal sliding column 401; a toothed disc 5, the toothed disc 5 is rotatably provided on the rear side of the cross frame 402; a dial frame 501 is fixedly provided on the rear side of the toothed disc 5; a rotating sleeve 6, the outer side of the rotating sleeve 6 is integrally provided with a concave ring 601, and the front end of the concave ring 601 is rotatably provided in the middle of the side of the cross frame 402; a rotating rod 7, the rotating rod 7 is rotatably provided in the rotating sleeve 6 with three sets of waterproof bearings; an oscillator 8, the oscillator 8 is slidably provided on the outside of the top block rod 301, and a spring is provided on the outer sleeve of the top block rod 301.

[0033] In addition, according to an embodiment of the present invention, reference Figure 3 The fixing base 2 includes: a rack 201, four groups of racks 201 are fixedly arranged on the front side of the fixing base 2, and the outside of the rack 201 is a sliding bar structure.

[0034] In addition, according to an embodiment of the present invention, reference Figure 6 The rotating sleeve 6 also includes: a gear ring 602, a gear ring 602 is fixedly provided on the outer rear side of the concave ring 601; an oil hole 603, an oil hole 603 is opened on the inner wall of the front side of the rotating sleeve 6, and the oil hole 603 is located between the two sets of waterproof bearings; a micro hydraulic rod 604, a micro hydraulic rod 604 is integrally provided on the inner wall of the concave ring 601, and a positioning strip 605 is fixedly provided at the telescopic end of the micro hydraulic rod 604; the micro hydraulic rod 604 is connected to the oil hole 603 through the inner wall of the rotating sleeve 6; the toothed disc 5 is engaged with the four sets of toothed rings 602, and the number of teeth of the toothed disc 5 is five times that of the toothed rings 602.

[0035] In addition, according to an embodiment of the present invention, reference Figure 6 The oil in the oil sleeve 603 is discharged through the discharge hole 702, and the oil in the oil sleeve 603 is discharged through the discharge hole 702.

[0036] In addition, according to an embodiment of the present invention, reference Figure 4 The front end of the rotating rod 7 is a screw structure, and the front end of the rotating rod 7 is threadedly connected to the rear side of the square edge top block 3; the part of the outer portion of the rotating rod 7 aligned with the concave ring 601 is set as a gear ring structure; rotate the dial frame 501, and the gear ring 602 is driven to rotate through the gear disk 5, and the gear ring 602 drives the rotating sleeve 6 to rotate as a whole, and then the positioning bar 605 drives the rotating rod 7 to rotate, and the front end screw part of the rotating rod 7 is fixedly connected to the rear end of the square edge top block 3; when individual rotating rods 7 are not tightened, reverse the advancing screw 701 to unlock the positioning bar 605, and the rotating rod 7 can be adjusted individually; after all the rotating rods 7 are adjusted to be tightened, the positioning bar 605 is used to fix the gear ring 602 to achieve positioning.

[0037] In addition, according to an embodiment of the present invention, reference Figure 7-8The oscillator 8 includes: a transmission groove 801, a transmission groove 801 is opened in the middle of the oscillator 8, and a fixed block 802 is fixedly provided on the middle rear side of the transmission groove 801; a protruding frame 803, protruding frames 803 are fixedly provided at both ends of the rear side of the transmission groove 801, two sets of driven gears 804 are rotatably provided in the protruding frames 803 on both sides, and an eccentric rod 805 is fixedly provided in the middle of the two sets of driven gears 804; a bar frame 806, the bar frame 806 slides on the outside of the eccentric rod 805, and a telescopic knocking rod 807 is fixedly provided at the front end of the bar frame 806; a spring is provided on the outside of the part where the front end of the telescopic knocking rod 807 passes through the fixed block 802.

[0038] In addition, according to an embodiment of the present invention, reference Figure 7-8 The sliding structure of the rack 201 fits and slides in the transmission groove 801, and the rack 201 is engaged with the driven gear 804 to provide a transmission effect. The rack 201 drives the two sets of driven gears 804 to rotate, and the two sets of driven gears 804 drive the eccentric rod 805 to rotate. The eccentric rod 805 cooperates with the bar frame 806 to drive the telescopic knocking rod 807 to move back and forth, and then the telescopic knocking rod 807 knocks the mold for pre-demolding, and then the frame 501 is turned to contact the assembly seat 1 to push the fixed seat 2 open, and the ejector rod 301 pushes the workpiece to make it detach, thereby realizing automatic demolding.

[0039] Specific usage and function of this embodiment: In the present invention, when in use, the ejector rod 301 is inserted into the movable half-side mold, and the oscillator 8 is fitted with the rear side of the mold; the rear side of the mold is fixed to the front side of the connecting rod 103;

[0040] During assembly, first rotate the advancing screw 701, which moves forward in conjunction with the threaded transmission. The advancing screw 701 drives the piston block 703 to move forward, discharging the oil in the rotating rod 7 through the discharge hole 702, and then passing through the oil hole 603 into the inner wall of the rotating sleeve 6, expanding the micro hydraulic rod 604, and inserting the positioning bar 605 into the outside of the gear ring structure of the rotating rod 7 to achieve fixation;

[0041] By rotating the dial frame 501, the gear ring 602 is driven to rotate via the gear disc 5, and the gear ring 602 drives the rotating sleeve 6 to rotate as a whole, and then the positioning bar 605 drives the rotating rod 7 to rotate, and the front screw portion of the rotating rod 7 is fixedly connected to the rear end of the square edge top block 3; when individual rotating rods 7 are not tightened, the screw 701 is reversed to unlock the positioning bar 605, and the rotating rod 7 can be adjusted separately; after all the rotating rods 7 are adjusted to be tightened, the positioning bar 605 is used to fix the gear ring 602 to achieve positioning, and the rotating rod 7 can be reused without further adjustment and can be quickly disassembled; the square edge top block 3 can be pulled out for replacement;

[0042] The hydraulic cylinder 101 is retracted during demoulding. During the process of contraction of the hydraulic cylinder 101, the connecting rod 103 pulls the mold apart. During this process, the rack 201 drives the two sets of driven gears 804 to rotate, and the two sets of driven gears 804 drive the eccentric rod 805 to rotate. The eccentric rod 805 cooperates with the bar frame 806 to drive the telescopic knocking rod 807 to move back and forth, and then the telescopic knocking rod 807 knocks the mold for pre-demolding, and then the frame 501 is turned to contact the assembly seat 1 to push open the fixed seat 2, and the ejector rod 301 pushes the workpiece to make it detach, thereby realizing automatic demoulding.

[0043] Finally, it should be noted that when describing the positions of various components and the matching relationships between them, the present invention usually takes one / a pair of components as an example. However, those skilled in the art should understand that such positions, matching relationships, etc. are also applicable to other components / other pairs of components.

[0044] The above description is merely an exemplary embodiment of the present invention and is not intended to limit the scope of protection of the present invention. The scope of protection of the present invention is determined by the appended claims.

Claims

1. A quick-detachable top block fixing structure for an injection mold, characterized in that: include: An assembly seat (1) is provided, wherein four groups of hydraulic cylinders (101) are fixedly provided on the rear side of the assembly seat (1), and a stretching seat (102) is fixedly provided on the front side of the telescopic ends of the four groups of hydraulic cylinders (101); a connecting rod (103) is fixedly provided in front of the stretching seat (102); a fixed seat (2) is slidably provided on the outside of the connecting rod (103), and the fixed seat (2) is a T-stage structure; a square edge top block (3) is fixedly provided on the front side of the fixed seat (2), and a top block rod (301) is integrally provided on the front side of the square edge top block (3); an intermediate fixed pile (4) is fixedly provided in the middle of the rear side of the fixed seat (2); and the rear side of the intermediate fixed pile (4) is provided. A hexagonal sliding column (401) is slidably provided, and a cross frame (402) is fixedly provided at the rear end of the hexagonal sliding column (401); a toothed disc (5), which is rotatably provided at the rear side of the cross frame (402); a rotating frame (501) is fixedly provided at the rear side of the toothed disc (5); a rotating sleeve (6), the outer portion of the rotating sleeve (6) is integrally provided with a concave ring (601), and the front end of the concave ring (601) is rotatably provided at the middle of the side of the cross frame (402); a rotating rod (7), which is rotatably provided in the rotating sleeve (6) in conjunction with three sets of waterproof bearings; an oscillator (8), which is slidably provided at the outer portion of the top block rod (301), and a spring is provided on the outer cover of the top block rod (301); The rotating sleeve (6) further comprises: A gear ring (602) is fixedly provided on the outer rear side of the concave ring (601); An oil hole (603) is provided on the inner wall of the front side of the rotating sleeve (6), and the oil hole (603) is located between the two sets of waterproof bearings; A micro hydraulic rod (604) is integrally provided on the inner wall of the concave ring (601), and a positioning strip (605) is fixedly provided at the telescopic end of the micro hydraulic rod (604); the micro hydraulic rod (604) is communicated with the oil hole (603) through the inner wall of the rotating sleeve (6); The rotating rod (7) comprises: The propulsion screw (701) is provided with a propulsion screw (701) in a threaded connection at the rear end of the rotating rod (7); the rear end of the propulsion screw (701) is a hand-rubbing pile, and the rear side of the hand-rubbing pile is a straight groove structure; The discharge hole (702) is provided in the middle of the rotating rod (7) as a slide groove structure, and the front side of the slide groove structure is provided with a discharge hole (702), and the discharge hole (702) is communicated with the oil hole (603); A piston block (703) is slidably provided inside the rotating rod (7), and a spring is provided at the front end of the piston block (703); The front end of the rotating rod (7) is a screw structure, and the front end of the rotating rod (7) is threadedly connected to the rear side of the square edge top block (3); the outer portion of the rotating rod (7) aligned with the concave ring (601) is configured as a gear ring structure.

2. A quick-detachable top block fixing structure for an injection mold according to claim 1, characterized in that: The fixing seat (2) includes: Racks (201), four groups of racks (201) are fixedly arranged on the front side of the fixed seat (2), and the outside of the racks (201) is a sliding bar structure.

3. A quick-detachable top block fixing structure for an injection mold according to claim 1, characterized in that: The toothed disc (5) is meshed with four sets of toothed rings (602), and the number of teeth on the toothed disc (5) is five times that of the toothed rings (602).

4. A quick-detachable top block fixing structure for an injection mold according to claim 1, characterized in that: The oscillator (8) comprises: A transmission groove (801) is provided in the middle of the oscillator (8), and a fixing block (802) is fixedly provided on the rear side of the middle of the transmission groove (801); A protruding frame (803) is fixedly provided at both ends of the rear side of the transmission groove (801), two sets of driven gears (804) are rotatably provided in the protruding frames (803) on both sides, and an eccentric rod (805) is fixedly provided in the middle of the two sets of driven gears (804); The bar frame (806) slides outside the eccentric rod (805), and a telescopic knocking rod (807) is fixedly provided at the front end of the bar frame (806); the front end of the telescopic knocking rod (807) passes through the outside of the position of the fixed block (802) and is sleeved with a spring.

5. A quick-detachable top block fixing structure for an injection mold as claimed in claim 2, characterized in that: The sliding structure of the rack (201) fits and slides in the transmission groove (801), and the rack (201) is meshed with the driven gear (804).

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