Inner core-pulling demolding mechanism of tray injection mold

Abstract

The utility model discloses an inner core-pulling demoulding mechanism of a tray injection mould, which relates to the technical field of injection moulds, and comprises a lower mould base, the top of the lower mould base is fixedly connected with a lower mould plate, the top of the lower mould plate is provided with an upper mould plate, the top of the upper mould plate is fixedly connected with an upper mould base, the middle part of the upper mould base is provided with a sprue gate, and the sprue gate is provided with a lower mould plate. Core pulling mechanisms are arranged on the front side and the rear side of the lower die plate correspondingly, and an ejection mechanism is arranged at the bottom of the lower die plate. The rodless air cylinders, the sliding plate, the core sliding block, the supporting block and the sliding table are matched with one another, the rodless air cylinders are additionally arranged on the two sides of the lower mold plate to drive the sliding plate to slide, and therefore the core sliding block can slide, the length of the core pulling mechanism is reduced, meanwhile, the supporting block slides on the sliding table, and the core pulling efficiency is improved. And sliding of the mold core sliding block can be limited, deviation can be avoided when the mold is subjected to core pulling, and the tray injection mold is more convenient to use.

Description

Technical Field

[0001] The utility model relates to the technical field of injection molds, in particular to an inner core-pulling demoulding mechanism of a tray injection mold. Background Art

[0002] Plastic pallets are a type of logistics unit used in conjunction with logistics equipment such as forklifts and shelves. They can be used to store, load and transport goods. They are one of the indispensable logistics equipment in modern logistics warehousing and are widely used in the chemical, textile, manufacturing and other fields. When processing plastic pallets, they are molded through injection molds.

[0003] The existing technology has the following problems:

[0004] When the existing pallet injection mold is in use, a core-pulling structure is generally used to assist in molding the grooves on the pallet plastic part. Due to the large area of ​​the pallet, the core-pulling structure is long, which makes it easy for deviations to occur during core pulling. At the same time, the existing pallet injection mold is not convenient for ejecting the molded pallet, making it difficult to remove the pallet. Utility Model Content

[0005] The utility model provides an inner core-pulling demoulding mechanism for a tray injection mold to solve the problems raised in the above background technology.

[0006] In order to solve the above technical problems, the technical solution adopted by the utility model is:

[0007] An internal core-pulling demoulding mechanism for a pallet injection mold comprises a lower mold base, the top of which is fixedly connected to a lower mold plate, the top of which is provided with an upper mold plate, the top of which is fixedly connected to an upper mold base, a pouring port is provided in the middle of the upper mold base, core-pulling mechanisms are provided on both the front and rear sides of the lower mold plate, and an ejection mechanism is provided at the bottom of the lower mold plate.

[0008] The core pulling mechanism includes a rodless cylinder, and the two rodless cylinders are respectively fixedly connected to the middle parts of the front and rear sides of the lower template. The outer surface of the rodless cylinder is slidably connected with a sliding plate, and the upper part of the sliding plate close to the lower template is fixedly connected with a core sliding block, and the left and right sides of the bottom of the core sliding block are fixedly connected with two supporting blocks, and the bottom of the two support blocks is slidably connected with a sliding platform.

[0009] A further improvement of the technical solution of the utility model is that: installation grooves are opened on the front and rear sides of the top of the lower template, the sliding platform is slidably inserted into the inside of the installation grooves, guide grooves are opened on the left and right sides of the top of the sliding platform, and the support block is slidably connected to the inside of the guide grooves.

[0010] A further improvement of the technical solution of the utility model is that: a knob is movably connected to the bottom of the sliding table, a sliding groove 1 is opened inside the sliding table, the top of the knob penetrates into the interior of the sliding groove 1 and is fixedly connected to a bevel gear 1, the outer surface of the bevel gear 1 is meshingly connected to a bevel gear 2, the bevel gear 2 is movably connected to the interior of the sliding groove 1, a transmission screw is fixedly connected to the side of the bevel gear 2 close to the lower template, and the outer surface of the transmission screw is threadedly connected to a threaded slider.

[0011] A further improvement of the technical solution of the utility model lies in that: the threaded slider is slidably connected to the inside of the sliding groove one, the left and right sides of the threaded slider are movably connected with push rods, the end of the push rod away from the threaded slider is movably connected to a fixed plug plate, the left and right sides of the inner surface of the mounting groove are provided with plug-in grooves, the fixed plug plate is slidably connected to the inside of the sliding groove one and the end away from the push rod penetrates into the inside of the plug-in groove.

[0012] A further improvement of the technical solution of the utility model is that the ejection mechanism includes four guide columns, the four guide columns are fixedly connected to the bottom of the lower mold plate, the bottom ends of the four guide columns are fixedly connected to a supporting bottom plate, the supporting bottom plate is fixedly connected to the middle of the lower mold base, the outer surfaces of the four guide columns are slidably connected to an ejector plate, and a plurality of ejectors are fixedly installed on the top of the ejector plate.

[0013] A further improvement of the technical solution of the utility model is that: the top end of the ejector pin penetrates into the interior of the lower template, a double-headed motor is fixedly connected to the middle of the support base plate, the left and right output shafts of the double-headed motor are fixedly connected to threaded columns, and sliding grooves 2 are provided on the left and right sides of the top of the support base plate, and one end of the threaded column away from the double-headed motor penetrates into the interior of sliding groove 2 and a threaded slide is threadedly connected to the outer surface.

[0014] A further improvement of the technical solution of the utility model lies in that: the front and rear sides of the interior of the threaded slide are slidably connected with sliding guide rods that penetrate left and right, the sliding guide rods are fixedly connected to the inner wall of the second sliding groove, and the front and rear sides of the threaded slide away from the double-headed motor are movably connected with push plates, and the top end of the push plate is movably connected to the bottom end of the ejector plate.

[0015] A further improvement of the technical solution of the utility model is that: a plurality of connecting holes penetrating up and down are opened inside the ejector plate, the bottom end of the ejector is fixedly connected to a limiting block, the bottom end of the limiting block is fixedly connected to a connecting stud, the bottom end of the connecting stud penetrates to the inside and below of the connecting hole and a fastening nut is threadedly connected to the outer surface.

[0016] Due to the adoption of the above technical solution, the utility model has achieved the following technical progress compared with the prior art:

[0017] 1. The utility model provides an internal core-pulling demoulding mechanism for a pallet injection mold. Through the mutual cooperation among a rodless cylinder, a sliding plate, a core sliding block, a support block, and a sliding table, a rodless cylinder is installed on both sides of a lower mold plate to drive the sliding plate to slide, so that the core sliding block can slide, reducing the length of the core-pulling mechanism. At the same time, through the sliding of the support block on the sliding table, the sliding of the core sliding block can be restricted, and deviation can be avoided when the core is pulled out of the mold, making the use of the pallet injection mold more convenient.

[0018] 2. The utility model provides an inner core-pulling demoulding mechanism for a pallet injection mold. Through the mutual cooperation among the guide column, the supporting bottom plate, the ejector plate, the ejector, the double-head motor, the threaded column, the threaded slide plate, the sliding guide rod, and the pushing plate, when the injection molding of the pallet is completed, by starting the double-head motor, the threaded column can drive the threaded slide plate to slide, so that the ejector plate can be pushed to slide upward through the pushing plate, so that the molded pallet can be ejected through the ejector, making it more convenient to take out the pallet and making it more convenient to process the pallet. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 It is a schematic diagram of the structure of the utility model;

[0020] Figure 2 This is a structural schematic diagram of the core pulling mechanism of the utility model;

[0021] Figure 3 It is a schematic diagram of the cross-sectional structure of the sliding platform of the utility model;

[0022] Figure 4 It is a cross-sectional structural schematic diagram of the ejection mechanism of the utility model;

[0023] Figure 5 It is an enlarged structural schematic diagram of the ejector pin of the utility model.

[0024] In the figure: 1. lower die base; 2. lower die plate; 21. mounting groove; 22. plug-in groove; 3. upper die plate; 4. upper die base; 5. pouring port; 6. core pulling mechanism; 61. rodless cylinder; 62. sliding plate; 63. core sliding block; 64. supporting block; 65. sliding table; 651. guide groove; 652. knob; 653. bevel gear one; 654. bevel gear two; 655. transmission screw; 656. threaded slider; 657. push rod; 658. fixed insert plate; 7. ejector mechanism; 71. guide column; 72. supporting bottom plate; 73. ejector plate; 731. connecting hole; 74. ejector; 741. limit block; 742. connecting stud; 743. fastening nut; 75. double-headed motor; 76. threaded column; 77. threaded slide plate; 78. sliding guide rod; 79. push plate. DETAILED DESCRIPTION

[0025] In order to make the technical means, creative features, objectives and effects of the present invention easy to understand, the present invention is further described below in conjunction with specific implementation methods:

[0026] like Figure 1-2 As shown, the utility model provides an inner core-pulling demoulding mechanism of a pallet injection mold, comprising a lower mold base 1, a lower mold plate 2 is fixedly connected to the top of the lower mold base 1, an upper mold plate 3 is arranged on the top of the lower mold plate 2, an upper mold base 4 is fixedly connected to the top of the upper mold plate 3, a pouring port 5 is opened in the middle of the upper mold base 4, core-pulling mechanisms 6 are arranged on the front and rear sides of the lower mold plate 2, and an ejection mechanism 7 is arranged on the bottom of the lower mold plate 2, the core-pulling mechanism 6 comprises a rodless cylinder 61, two rodless cylinders 61 are respectively fixedly connected to the middle of the front and rear sides of the lower mold plate 2, a sliding plate 62 is slidably connected to the outer surface of the rodless cylinder 61, a core sliding block 63 is fixedly connected to the upper side of the sliding plate 62 close to the lower mold plate 2, two support blocks 64 are fixedly connected to the left and right sides of the bottom of the core sliding block 63, and a sliding platform 65 is slidably connected to the bottom of the two support blocks 64;

[0027] When processing the pallet, after the lower mold 2 and the upper mold 3 are closed, and the core sliding block 63 is pressed against both sides, the raw material is injected into the mold through the pouring port 5, and a pallet is formed after cooling. Then, the rodless cylinder 61 can drive the sliding plate 62 to slide, so that the core sliding block 63 can slide out. At the same time, the sliding of the support block 64 on the sliding table 65 can limit the sliding of the core sliding block 63, which can avoid deviation when the core is pulled out of the mold. Then, the pallet can be ejected by the ejection mechanism 7 to complete the processing of the pallet.

[0028] like Figure 3As shown, the utility model provides an inner core-pulling demoulding mechanism for a tray injection mold, the top front and rear sides of the lower template 2 are provided with mounting grooves 21, the sliding platform 65 is slidably inserted in the interior of the mounting groove 21, the top left and right sides of the sliding platform 65 are provided with guide grooves 651, the support block 64 is slidably connected in the interior of the guide groove 651, the bottom of the sliding platform 65 is movably connected with a knob 652, the interior of the sliding platform 65 is provided with a sliding groove 1, the top of the knob 652 penetrates into the interior of the sliding groove 1 and is fixedly connected with a bevel gear 1 653, the outer surface of the bevel gear 1 653 is meshedly connected with a bevel gear 2 654, and the bevel gear 2 65 4 is movably connected inside the sliding groove 1, a transmission screw 655 is fixedly connected to the side of the bevel gear 2 close to the lower template 2, the outer surface of the transmission screw 655 is threadedly connected to a threaded slider 656, the threaded slider 656 is slidably connected inside the sliding groove 1, the left and right sides of the threaded slider 656 are movably connected to push rods 657, the end of the push rod 657 away from the threaded slider 656 is movably connected to a fixed plug plate 658, the inner surface of the installation groove 21 is provided with plug-in grooves 22 on the left and right sides, the fixed plug plate 658 is slidably connected inside the sliding groove 1 and the end away from the push rod 657 penetrates into the plug-in groove 22;

[0029] Insert the sliding table 65 into the installation groove 21, and by rotating the knob 652, the bevel gear 1 653 can drive the bevel gear 2 654 to rotate, thereby driving the transmission screw 655 to rotate, and the threaded slider 656 can slide inside the sliding groove 1, so that the fixed plug plate 658 can be pushed into the plug-in groove through the push rod 657, so that the sliding table 65 can be fixed, which facilitates the sliding of the support block 64 inside the guide groove 651.

[0030] like Figure 4As shown, the utility model provides an inner core-pulling demoulding mechanism for a tray injection mold, and the ejection mechanism 7 includes four guide columns 71, and the four guide columns 71 are fixedly connected to the bottom of the lower template 2, and the bottom ends of the four guide columns 71 are fixedly connected to a supporting bottom plate 72, and the supporting bottom plate 72 is fixedly connected to the middle of the lower mold base 1, and the outer surfaces of the four guide columns 71 are slidably connected to an ejector plate 73, and a plurality of ejector pins 74 are fixedly installed on the top of the ejector pin 73, and the top ends of the ejector pins 74 penetrate into the interior of the lower template 2, and the middle of the supporting bottom plate 72 is fixedly connected to a double-headed motor 75, and the double-headed motor 75 is fixedly connected to the middle of the supporting bottom plate 72. The left and right output shafts of the motor 75 are fixedly connected with threaded columns 76. The left and right sides of the top of the support bottom plate 72 are provided with sliding grooves 2. The end of the threaded column 76 away from the double-headed motor 75 penetrates into the inside of the sliding groove 2 and is threadedly connected with a threaded slide plate 77 on the outer surface. The front and rear sides of the inside of the threaded slide plate 77 are slidably connected with sliding guide rods 78 that penetrate left and right. The sliding guide rods 78 are fixedly connected to the inner wall of the sliding groove 2. The front and rear sides of the side of the threaded slide plate 77 away from the double-headed motor 75 are movably connected with a push plate 79. The top end of the push plate 79 is movably connected to the bottom end of the ejector plate 73.

[0031] When the injection molding of the pallet is completed, by starting the double-headed motor 75, the threaded column 76 can be driven to rotate, thereby driving the threaded slide plate 77 to slide along the sliding guide rod 78, so that the push plate 79 can push the ejector plate 73 to slide upward along the guide column 71, so that the pallet formed inside the lower template 2 can be ejected by the ejector 74, making it more convenient to remove the pallet and making it more convenient to process the pallet.

[0032] like Figure 5 As shown, the utility model provides an inner core-pulling demoulding mechanism for a tray injection mold, a plurality of connecting holes 731 penetrating from top to bottom are opened inside the ejector plate 73, the bottom end of the ejector 74 is fixedly connected to a limiting block 741, the bottom end of the limiting block 741 is fixedly connected to a connecting stud 742, the bottom end of the connecting stud 742 penetrates to the inside and below of the connecting hole 731 and the outer surface is threadedly connected to a fastening nut 743;

[0033] By inserting the connecting stud 742 into the connecting hole 731 and tightening the connecting stud 742 by means of the fastening nut 743 , the ejector pin 74 can be installed on the ejector pin plate 73 by cooperating with the limiting block 741 , thereby facilitating the use of the ejector pin 74 .

[0034] The following is a detailed description of the working principle of the inner core-pulling demoulding mechanism of the pallet injection mold.

[0035] like Figure 1-5As shown, when the pallet is processed, the lower template 2 and the upper template 3 are molded together, and the core sliding block 63 is pressed against both sides. The raw material is injected into the mold through the pouring port 5. After cooling, a pallet is formed. Then, the sliding plate 62 can be driven to slide by the rodless cylinder 61, so that the core sliding block 63 can slide out. By starting the double-headed motor 75, the threaded column 76 can be driven to rotate, thereby driving the threaded slide plate 77 to slide along the sliding guide rod 78, so that the push plate 79 can push the ejector plate 73 to slide upward along the guide column 71, so that the pallet formed inside the lower template 2 can be ejected by the ejector 74, and the processing of the pallet is completed.

[0036] The above generally describes the present invention in detail, but it is obvious to a person skilled in the art that some modifications or improvements can be made to the present invention. Therefore, modifications or improvements that do not deviate from the spirit of the present invention are within the scope of protection of the present invention.

Claims

1. An inner core-pulling demoulding mechanism for a tray injection mold, comprising a lower mold base (1), the top of the lower mold base (1) is fixedly connected to a lower mold plate (2), the top of the lower mold plate (2) is provided with an upper mold plate (3), the top of the upper mold plate (3) is fixedly connected to an upper mold base (4), and a pouring port (5) is provided in the middle of the upper mold base (4), characterized in that: The front and rear sides of the lower template (2) are both provided with core pulling mechanisms (6), and the bottom of the lower template (2) is provided with an ejection mechanism (7); The core pulling mechanism (6) includes a rodless cylinder (61), and the two rodless cylinders (61) are respectively fixedly connected to the middle of the front and rear sides of the lower mold plate (2), and the outer surface of the rodless cylinder (61) is slidably connected to a sliding plate (62), and the sliding plate (62) is fixedly connected to a core sliding block (63) on the upper side of the sliding plate (62) close to the lower mold plate (2), and the bottom left and right sides of the core sliding block (63) are fixedly connected to two support blocks (64), and the bottom of the two support blocks (64) is slidably connected to a sliding platform (65).

2. The inner core-pulling demoulding mechanism of a tray injection mold according to claim 1, characterized in that: The top of the lower template (2) is provided with mounting grooves (21) on both the front and rear sides, the sliding platform (65) is slidably inserted into the inside of the mounting groove (21), the top of the sliding platform (65) is provided with guide grooves (651) on both the left and right sides, and the support block (64) is slidably connected to the inside of the guide groove (651).

3. The inner core-pulling demoulding mechanism of a tray injection mold according to claim 2, characterized in that: The bottom of the sliding platform (65) is movably connected with a knob (652), a sliding groove 1 is provided inside the sliding platform (65), the top end of the knob (652) penetrates into the inside of the sliding groove 1 and is fixedly connected with a bevel gear 1 (653), the outer surface of the bevel gear 1 (653) is meshingly connected with a bevel gear 2 (654), the bevel gear 2 (654) is movably connected inside the sliding groove 1, the side of the bevel gear 2 (654) close to the lower template (2) is fixedly connected with a transmission screw (655), and the outer surface of the transmission screw (655) is threadedly connected with a threaded slider (656).

4. The inner core-pulling demoulding mechanism of a tray injection mold according to claim 3, characterized in that: The threaded slider (656) is slidably connected to the inside of the sliding groove (656), and the left and right sides of the threaded slider (656) are movably connected with a push rod (657), and the end of the push rod (657) away from the threaded slider (656) is movably connected to a fixed plug plate (658), and the left and right sides of the inner surface of the installation groove (21) are provided with plug-in grooves (22), and the fixed plug plate (658) is slidably connected to the inside of the sliding groove (656) and the end away from the push rod (657) passes through the inside of the plug-in groove (22).

5. The inner core-pulling demoulding mechanism of a tray injection mold according to claim 1, characterized in that: The ejection mechanism (7) comprises four guide columns (71), the four guide columns (71) are fixedly connected to the bottom of the lower mold plate (2), the bottom ends of the four guide columns (71) are fixedly connected to a supporting base plate (72), the supporting base plate (72) is fixedly connected to the middle of the lower mold base (1), the outer surfaces of the four guide columns (71) are slidably connected to an ejector plate (73), and a plurality of ejector pins (74) are fixedly installed on the top of the ejector plate (73).

6. The inner core-pulling demoulding mechanism of a tray injection mold according to claim 5, characterized in that: The top end of the ejector pin (74) penetrates into the interior of the lower template (2), and a double-headed motor (75) is fixedly connected to the middle of the support base plate (72). The left and right output shafts of the double-headed motor (75) are fixedly connected to threaded columns (76). Sliding grooves 2 are provided on the left and right sides of the top of the support base plate (72). One end of the threaded column (76) away from the double-headed motor (75) penetrates into the interior of the sliding groove 2 and a threaded slide plate (77) is threadedly connected to the outer surface.

7. The inner core-pulling demoulding mechanism of a tray injection mold according to claim 6, characterized in that: The front and rear sides of the threaded slide plate (77) are slidably connected to sliding guide rods (78) that penetrate left and right. The sliding guide rods (78) are fixedly connected to the inner wall of the second sliding groove. The front and rear sides of the threaded slide plate (77) away from the double-headed motor (75) are movably connected to push plates (79). The top end of the push plate (79) is movably connected to the bottom end of the ejector plate (73).

8. The inner core-pulling demoulding mechanism of a tray injection mold according to claim 5, characterized in that: The ejector plate (73) is provided with a plurality of connecting holes (731) extending upward and downward, the bottom end of the ejector (74) is fixedly connected to a limiting block (741), the bottom end of the limiting block (741) is fixedly connected to a connecting stud (742), the bottom end of the connecting stud (742) extends through the bottom of the connecting hole (731) and the outer surface is threadedly connected to a fastening nut (743).

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