Multi-hole synchronous material removal head device with independent fine-tuning mechanism

Abstract

The present invention discloses a multi-hole synchronous material removing head device with an independent fine-adjustment mechanism, comprising a shell, wherein two groups of left and right guide rails are fixed in the shell, a slide is slidably provided on each group of the guide rails, a bracket is mounted above each group of the guide rails, a lifting plate is slidably provided under each of the brackets, an upward cutting component is fixed on the slide, a downward cutting component is fixed under the lifting plate, and a suction cup is provided above the two groups of guide rails; the cutting component comprises a base, wherein two parallel slide rails are fixed on the base, and multiple pairs of mutually corresponding sliders are slidably provided in the two slide rails, and a first vertical screw and a second vertical screw parallel to each other are rotatably provided between each pair of sliders, the centers of the first vertical screw and the second vertical screw are rotatably connected to the card block, and a cross groove is opened on the upper surface of the card block, and a cutter is respectively provided between the card block and the two sliders; the present invention has the characteristics of synchronous cutting, independent fine-tuning, and flexible adaptation.

Description

Technical Field

[0001] The invention relates to the technical field of injection molding, in particular to a multi-hole synchronous material removal head device with an independent fine-tuning mechanism. Background Art

[0002] As the injection molding industry continues to demand higher production efficiency, multi-cavity molds are becoming increasingly popular due to their ability to mold multiple products in a single pass. However, after injection molding, a slug is formed at the junction of the product and the runner, often in a cross-shaped structure. This slug must be removed in a post-processing step to produce a single finished product. Manual slug removal is inefficient and inconsistent, making automated, synchronized slug removal a key component in improving post-processing efficiency.

[0003] Currently, mainstream synchronous slug removal systems mostly utilize a monolithic tool assembly or anvil structure with fixed cutting stations: the positions of all cutters or anvils are fixed by a rigid frame, making it impossible to adjust the cutting position of individual points. A synchronous drive mechanism uses a pneumatic, hydraulic, or cam mechanism to drive the tool assembly downward, cutting all slugs simultaneously. However, in practice, the actual slug position at each point can deviate from the theoretical design due to machining errors at each point in the mold, shrinkage differences caused by uneven temperature or pressure distribution during the injection molding process, and uneven wear of the tool after long-term use. Monolithic tool assemblies cannot independently compensate for deviations at individual points, resulting in some products with slug heights exceeding tolerances, such as excessive height on one side or incomplete cutting, affecting product assembly and appearance. If a single point exhibits abnormal cutting, the entire tool assembly must be adjusted or replaced, potentially causing new deviations at other previously qualified points, creating a vicious cycle of adjustment and re-adjustment. Frequent disassembly and recalibration significantly increases downtime and maintenance costs. For injection molded parts with tilted or asymmetrical surfaces, fixed-angle cutting tools struggle to conform to the interface between the slug and the part, easily leading to chipping or scratches. Traditional systems rely on high-precision molds to ensure consistent cutting, placing stringent demands on mold processing and maintenance, limiting their application in flexible, low-volume, high-variety production.

[0004] Therefore, it is necessary to provide a multi-hole synchronous material removal head device with an independent fine-tuning mechanism to solve the problems raised in the above background technology. Summary of the Invention

[0005] To achieve the above-mentioned object, the present invention provides the following technical solution: a multi-hole synchronous material removal head device with an independent fine-tuning mechanism, comprising a shell, two left and right groups of guide rails fixed in the shell, a slide slidably provided on each group of the guide rails, a bracket mounted above each group of the guide rails, a lifting plate slidably provided below each of the brackets, an upward-facing cutting assembly fixed on the slide, a downward-facing cutting assembly fixed below the lifting plate, and a suction cup provided above the two groups of the guide rails;

[0006] The cutting assembly includes a base, two parallel slide rails are fixed on the base, and multiple pairs of corresponding sliders are slidably arranged in the two slide rails. A first vertical screw and a second vertical screw are rotatably arranged between each pair of sliders. The centers of the first vertical screw and the second vertical screw are rotatably connected to the clamping block, and a cross groove is provided on the upper surface of the clamping block. A cutter is provided between the clamping block and the two sliders.

[0007] Furthermore, preferably, the cross section of the groove in the block is V-shaped.

[0008] Furthermore, preferably, two tool holders are connected below each of the cutters, and the two tool holders are threadedly connected to the first vertical screw and the second vertical screw respectively, and the threads of the two tool holders connected to the same first vertical screw or the second vertical screw have opposite rotation directions.

[0009] Furthermore, as a preference, a universal ball is rotatably connected in each of the tool holders, and the first vertical screw or the second vertical screw is threadedly connected to the universal ball;

[0010] The two tool holders corresponding to the same cutting tool are connected together by sliding through an inserting rod.

[0011] Furthermore, preferably, the cutter is slidably connected to the cutter holder, and a cutter spring is connected between each cutter holder and the corresponding cutter.

[0012] Furthermore, as a preference, push strips are distributed on both sides of each of the card blocks, both ends of the push strips are slidably connected to the corresponding side surfaces of the slider, and the upper surface of the push strips is in contact with the lower edge of the cutter.

[0013] Furthermore, as a preference, two eccentric shafts are rotatably embedded in the base, the eccentric shafts are vertically intersected with each push bar on the same base, and the eccentric shafts are in contact with the lower surface of the push bar;

[0014] Connecting rods are eccentrically connected at both ends of the eccentric shaft.

[0015] Furthermore, as a preference, the upper ends of the two connecting rods on the same side of the same base are both slidably connected to a pressure plate, and a support spring is provided between the pressure plate and the base.

[0016] Furthermore, preferably, two X-shaped scissor-type connecting rods are hinged above each of the sliders, and the scissor-type connecting rods between adjacent sliders on the same slide rail are hinged together.

[0017] Furthermore, as a preference, a transverse screw is rotatably provided above each of the slide rails, and the transverse screw is connected to two sliding blocks on both sides of the corresponding slide rail via threads with opposite rotation directions.

[0018] Compared with the prior art, the present invention has the following beneficial effects:

[0019] In the present invention, through the linkage design of the upper and lower groups of cutting components, the upper and lower cutting of multiple material heads can be completed at one time, which is several times more efficient than traditional single-point cutting. The suction cup cooperates with the slide to automatically load and unload materials, and the linkage action of the lifting plate and the cutting component realizes full process automation and reduces manual intervention.

[0020] In the present invention, the first vertical screw and the second vertical screw are independently fine-tuned to accurately control the position of the cutter, ensure that the blade is aligned with the junction of the material head and the product, and avoid damage to the product. The universal ball and plug rod design allows the cutter to automatically adjust with the inclination angle of the product surface, fit the complex curved surface, and avoid cutting misalignment or residue. The scissor connecting rod and the horizontal screw cooperate to achieve synchronous adjustment of the slider spacing, adapting to injection molded products of different sizes without changing the mold.

[0021] In the present invention, when the lifting plate descends, the eccentric shafts of the upper and lower cutting assemblies synchronously drive the push strips through the cooperation of the pressure plate and the support spring, and the upper and lower cutters simultaneously apply cutting forces in opposite directions to the material head, forming a symmetrical force structure, offsetting the risk of material deviation or deformation caused by unilateral cutting, avoiding cracks or burrs on the product due to uneven force, and ensuring that the cutting action of the cutter is completely synchronized, eliminating vibrations caused by timing errors; the material head of the injection molded product is vertically fixed by the V-groove of the clamping block, and when the upper and lower cutters cut in synchronously, the material head remains stable under bidirectional clamping, avoiding shaking or tilting during the cutting process. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] Figure 1 It is a schematic diagram of the overall structure of a multi-hole synchronous material removal head device with an independent fine-tuning mechanism;

[0023] Figure 2 This is a structural diagram of one of the brackets;

[0024] Figure 3 It is a schematic diagram of the overall structure of the cutting component;

[0025] Figure 4 is a schematic diagram of the structure of one pair of sliders;

[0026] Figure 5 is a schematic diagram of the cross-sectional structure of the cutting component;

[0027] In the figure: 1. Housing; 2. Guide rail; 21. Slide; 3. Bracket; 31. Lifting plate; 4. Suction cup; 5. Cutting assembly; 51. Base; 52. Slide rail; 53. Slider; 54. First vertical screw; 55. Second vertical screw; 56. Block; 57. Cutter; 571. Knife holder; 572. Universal ball; 573. Insert rod; 574. Cutter spring; 58. Scissor connecting rod; 59. Horizontal screw; 510. Push bar; 511. Eccentric shaft; 512. Connecting rod; 513. Pressure plate; 514. Support spring. DETAILED DESCRIPTION

[0028] See also Figure 1-Figure 5 In an embodiment of the present invention, a multi-hole synchronous material removal head device with an independent fine-tuning mechanism includes a shell 1, two left and right groups of guide rails 2 are fixed in the shell 1, a slide 21 is slidably provided on each group of the guide rails 2, a bracket 3 is mounted above each group of the guide rails 2, and a lifting plate 31 is slidably provided below each bracket 3, an upward cutting component 5 is fixed on the slide 21, a downward cutting component 5 is fixed under the lifting plate 31, and a suction cup 4 is provided above the two groups of the guide rails 2;

[0029] The cutting assembly 5 includes a base 51, on which two parallel slide rails 52 are fixed, and multiple pairs of corresponding sliders 53 are slidably arranged in the two slide rails 52, and a first vertical screw 54 and a second vertical screw 55 parallel to each other are rotatably arranged between each pair of sliders 53, and the center of the first vertical screw 54 and the second vertical screw 55 are rotatably connected to the block 56, and the upper surface of the block 56 is provided with a cross groove, and a cutter 57 is provided between the block 56 and the two sliders 53.

[0030] The carriage 21 slides left and right on the guide rail 2, and can load and unload materials in the cutting assembly 5 thereon through the suction cup 4. When it slides under the corresponding lifting plate 31, the cutting assembly 5 under the lifting plate 31 descends with the lifting plate 31, and can cut the injection molded product in the cutting assembly 5 on the carriage 21 to remove the material head;

[0031] In the cutting assembly 5, multiple cross slugs of the injection molded product are respectively clamped in the cross grooves of each clamping block 56, thereby supporting and positioning the injection molded product. The position of the cutter 57 can be adjusted by rotating the first vertical screw 54 and the second vertical screw 55, so that the cutter 57 is aligned with the junction of the injection molded product and the slug. When the cutting assembly 5 under the lifting plate 31 descends with the lifting plate 31, the cutters 57 in the upper and lower cutting assemblies 5 simultaneously cut off the slugs from the top and bottom.

[0032] In this embodiment, the cross section of the groove in the clamping block 56 is V-shaped to accommodate spools with different diameters.

[0033] In this embodiment, two tool holders 571 are connected under each of the cutters 57, and the two tool holders 571 are threadedly connected to the first vertical screw 54 and the second vertical screw 55 respectively, and the thread rotation directions of the two tool holders 571 connected to the same first vertical screw 54 or second vertical screw 55 are opposite.

[0034] That is, the position of the tool holder 571 can be adjusted by synchronously rotating the first vertical screw 54 and the second vertical screw 55 , so that the cutter 57 is aligned with the junction of the injection molded product and the sprue.

[0035] In this embodiment, a universal ball 572 is rotatably connected in each of the tool holders 571 , and the first vertical screw 54 or the second vertical screw 55 is threadedly connected to the universal ball 572 ;

[0036] The two tool holders 571 corresponding to the same cutting tool 57 are slidably connected together through an inserting rod 573 .

[0037] That is to say, when the first vertical screw 54 and the second vertical screw 55 rotate asynchronously, the two tool holders 571 corresponding to the same cutter 57 will be staggered front and back, and the cutter 57 will be tilted under the action of the universal ball 572 and the insertion rod 573, so that the cutter 57 can be fitted to the inclined surface of the injection molded product.

[0038] In this embodiment, the cutter 57 is slidably connected to the cutter holder 571 , and a cutter spring 574 is connected between each cutter holder 571 and the corresponding cutter 57 .

[0039] In this embodiment, push strips 510 are distributed on both sides of each of the blocks 56 . Both ends of the push strips 510 are slidably connected to the corresponding side surfaces of the slider 53 , and the upper surface of the push strips 510 is in contact with the lower edge of the cutter 57 .

[0040] In this embodiment, two eccentric shafts 511 are rotatably embedded in the base 51. The eccentric shafts 511 are vertically intersected with each push bar 510 on the same base 51, and the eccentric shafts 511 are in contact with the lower surface of the push bar 510.

[0041] Connecting rods 512 are eccentrically connected to both ends of the eccentric shaft 511 .

[0042] That is to say, by rotating the connecting rod 512, the eccentric shaft 511 can be rotated eccentrically, thereby pushing each push strip 510 to move upward, and then the cutter 57 cuts toward the material head.

[0043] In this embodiment, the upper ends of the two connecting rods 512 on the same side of the same base 51 are both slidably connected to a pressure plate 513 , and a support spring 514 is provided between the pressure plate 513 and the base 51 .

[0044] Under the action of the support spring 514, the pressure plate 513 is in the highest position and the connecting rod 512 rotates to the top. At this time, the rotation angle of the eccentric shaft 511 makes each push strip 510 at the bottom; when the lifting plate 31 descends, the pressure plate 513 in the cutting assembly 5 under the lifting plate 31 presses onto the pressure plate 513 in the cutting assembly 5 on the slide 21, so that the support spring 514 is squeezed. At this time, the eccentric shaft 511 rotates to the push strip 510 to push the cutter 57 close to the material head, so that the cutters 57 above and below the material head cut toward the material head at the same time to cut it evenly.

[0045] In this embodiment, two X-shaped scissor-type connecting rods 58 are hinged above each of the sliders 53 , and the scissor-type connecting rods 58 between adjacent sliders 53 on the same slide rail 52 are hinged together.

[0046] That is to say, under the action of the scissor-type connecting rod 58, the spacing between the sliders 53 is always the same.

[0047] In this embodiment, a transverse screw 59 is rotatably provided above each slide rail 52 , and the transverse screw 59 is connected to the two sliders 53 on both sides of the corresponding slide rail 52 via threads with opposite rotation directions.

[0048] That is, the distance between the two sliders 53 on both sides of the slide rail 52 can be adjusted by rotating the transverse screw 59, and under the action of the scissor link 58, the distance between the other sliders 53 between the two sliders 53 will also change accordingly to adapt to injection molded products of different specifications.

[0049] When implementing:

[0050] The slide 21 slides along the guide rail 2 to the bottom of the suction cup 4. The suction cup 4 absorbs the injection molded product and places it on the cutting assembly 5 on the slide 21. The slide 21 carries the product and moves to the bottom of the lifting plate 31.

[0051] Rotate the horizontal screw 59 above the slide rail 52. Since the threads on both sides of the horizontal screw 59 rotate in opposite directions, the sliders 53 on both sides move synchronously in opposite directions. The scissor-type connecting rod 58 links the adjacent sliders to maintain a uniform spacing. Adjust the spacing between the sliders 53 until it is consistent with the distribution of the injection molded product slugs.

[0052] Insert the cross head of the injection molded product into the V-shaped groove of the clamping block 56;

[0053] The first vertical screw 54 and the second vertical screw 55 are rotated synchronously, and the front and rear tool holders 571 of the same clamping block 56 are synchronously moved closer or farther away, so that the cutter 57 moves horizontally to align with the junction of the material head and the product;

[0054] If the product surface is tilted, the first vertical screw 54 or the second vertical screw 55 is rotated separately, and the universal ball 572 allows the two tool holders 571 corresponding to the same cutter 57 to be offset front and back, and the cutter 57 is tilted with the tool holder to fit the curved surface of the product;

[0055] The lifting plate 31 descends, driving the cutting assembly 5 under the lifting plate 31 to press down. The pressure plates 513 of the upper and lower cutting assemblies 5 come into contact, triggering a linkage: the support spring 514 is compressed, the pressure plate 513 moves down, the connecting rod 512 drives the eccentric shaft 511 to rotate, pushing the push bar 510 to move up, and the push bar 510 lifts the cutter 57. The upper and lower cutters cut into the material head at the same time;

[0056] The lifting plate 31 rises, the support spring 514 rebounds, the push bar 510 returns to the initial position, and the slide 21 carries the finished product back to the suction cup 4 area, completing the unloading.

[0057] The above is only a preferred specific embodiment of the present invention, but the scope of protection of the present invention is not limited thereto. Any technician familiar with this technical field, within the technical scope disclosed by the present invention, who makes equivalent replacements or changes based on the technical solutions and inventive concepts of the present invention, should be covered by the scope of protection of the present invention.

Claims

1. A multi-hole synchronous material removal head device with an independent fine-tuning mechanism, comprising a housing (1), characterized in that: Two left and right groups of guide rails (2) are fixed in the housing (1), a slide (21) is slidably provided on each group of guide rails (2), a bracket (3) is provided above each group of guide rails (2), a lifting plate (31) is slidably provided below each bracket (3), an upward-facing cutting assembly (5) is fixed on the slide (21), a downward-facing cutting assembly (5) is fixed below the lifting plate (31), and a suction cup (4) is provided above the two groups of guide rails (2); The cutting assembly (5) includes a base (51), two parallel slide rails (52) are fixed on the base (51), a plurality of pairs of mutually corresponding sliders (53) are slidably arranged in the two slide rails (52), a first vertical screw rod (54) and a second vertical screw rod (55) are rotatably arranged between each pair of sliders (53), the centers of the first vertical screw rod (54) and the second vertical screw rod (55) are rotatably connected to a clamping block (56), a cross groove is provided on the upper surface of the clamping block (56), and a cutter (57) is provided between the clamping block (56) and the two sliders (53); Two tool holders (571) are connected below each of the cutters (57), and a universal ball (572) is rotatably connected inside each of the tool holders (571). The first vertical screw (54) or the second vertical screw (55) is threadedly connected to the universal ball (572), and the two tool holders (571) corresponding to the same cutter (57) are slidably connected together via an insert rod (573); Each of the blocks (56) is provided with push strips (510) on both sides, both ends of the push strips (510) are slidably connected to the side surfaces of the corresponding sliders (53), and the upper surface of the push strips (510) is in contact with the lower edge of the cutter (57); Two eccentric shafts (511) are rotatably embedded in the base (51), and the eccentric shafts (511) are vertically cross-distributed with each push bar (510) on the same base (51). The eccentric shafts (511) are in contact with the lower surface of the push bar (510), and connecting rods (512) are eccentrically connected at both ends of the eccentric shafts (511).

2. The multi-hole synchronous material removal head device with independent fine-tuning mechanism according to claim 1 is characterized in that: The cross section of the groove in the block (56) is V-shaped.

3. The multi-hole synchronous material removal head device with independent fine-tuning mechanism according to claim 1 is characterized in that: The two tool holders (571) are respectively threadedly connected to the first vertical screw (54) and the second vertical screw (55), and the thread rotation directions of the two tool holders (571) connected to the same first vertical screw (54) or second vertical screw (55) are opposite.

4. The multi-hole synchronous material removal head device with independent fine-tuning mechanism according to claim 1, characterized in that: The cutter (57) is slidably connected to the cutter holder (571), and each cutter holder (571) is connected to the corresponding cutter (57) via a cutter spring (574).

5. The multi-hole synchronous material removal head device with independent fine-tuning mechanism according to claim 1, characterized in that: The upper ends of the two connecting rods (512) on the same side of the same base (51) are both slidably connected to a pressure plate (513), and a support spring (514) is provided between the pressure plate (513) and the base (51).

6. The multi-hole synchronous material removal head device with independent fine-tuning mechanism according to claim 1, characterized in that: Two X-shaped scissor-fork connecting rods (58) are hinged above each slider (53), and the scissor-fork connecting rods (58) between adjacent sliders (53) on the same slide rail (52) are hinged together.

7. The multi-hole synchronous material removal head device with independent fine-tuning mechanism according to claim 6, characterized in that: A transverse screw (59) is rotatably provided above each slide rail (52), and the transverse screw (59) is connected to two sliders (53) on both sides of the corresponding slide rail (52) via threads with opposite rotation directions.

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