Middle frame template pressing device of sole injection molding machine

Abstract

The utility model relates to the technical field of shoe sole injection molding machine equipment, in particular to a middle frame pressing template device of a shoe sole injection molding machine, which comprises a disc and is characterized in that a supporting bottom plate is arranged in the center of the bottom of the disc, a plurality of mold grooves are formed in the disc, the number of the mold grooves is 20-25, and the mold grooves are arranged at equal intervals in a circumferential array mode. A plurality of shoe sole molds are arranged on the mold grooves, each shoe sole mold is formed by combining two upper mold removal molds, a middle frame mold and two lower mold removal molds, continuous production is achieved through the multi-station cooperative system and the multiple circumferential array mold grooves, and compared with a traditional linear layout, the productivity is improved by 250%; the mold opening assembly and the driving assembly are in linkage control, so that the single-time mold opening and closing time is shortened to 3.2 seconds (average 8 seconds in the industry); due to the modular mold design, the mold changing time is shortened from 15 minutes to 2 minutes, and the first adjusting holes and the second adjusting holes achieve rapid adaptation of shoe molds of different sizes; and the thickness of the flash of the sole is controlled within 0.1 mm through the central extrusion excess material port.

Description

Technical Field

[0001] This utility model relates to the technical field of shoe sole injection molding machine equipment, and in particular to a shoe sole injection molding machine pressing frame template device. Background Technology

[0002] Traditional shoe sole injection molding machines generally adopt the following structures: Single-station linear layout: Only one shoe sole can be produced at a time, resulting in low production efficiency (maximum of 80-100 pairs per hour); Integrated mold design: The entire mold needs to be disassembled when changing to different shoe sizes, which takes up to 2-3 hours; Hydraulic mold opening system: There is a risk of oil leakage, high maintenance costs, and the mold opening accuracy decreases with use; Linear motion mold opening mechanism: Severe mechanical wear, and the guide components need to be replaced every 3 months.

[0003] Chinese patent discloses a multi-station automatic rubber sole molding machine (publication number: CN 215243028 U), including a base, a circular processing table, and a rotary table. The circular processing table is mounted on the base. The rotary table has a rack on its inner side and a circular groove A on its outer side. An L-shaped buckle is inserted into the circular groove A and fixed to the circular processing table by fixing screws. A rotary motor is mounted on the inner side of the circular processing table, and a gear is mounted on the output shaft of the rotary motor, with the gear meshing with the rack. However, this automatic rubber sole molding machine has insufficient mold positioning accuracy: the mold position is prone to displacement after the turntable rotates; the mold opening action is not smooth: straight mold opening is prone to jamming; mold changing is still cumbersome: it requires professional tools and a long time; and the energy consumption reduction is limited: the overall energy consumption remains high. Therefore, a middle frame template device for a sole injection molding machine is needed. Utility Model Content

[0004] The purpose of this utility model is to solve the shortcomings of existing automatic rubber sole molding machines, such as insufficient mold positioning accuracy, easy mold position deviation after turntable rotation, unsmooth mold opening action, easy jamming during straight mold opening, cumbersome mold changing, requiring professional tools and a long time, and limited energy consumption reduction, with overall energy consumption remaining high. Therefore, a middle frame template device for a sole injection molding machine is proposed.

[0005] The technical solution adopted by this utility model to solve its technical problem is as follows: The present utility model provides a shoe sole injection molding machine pressing frame template device, including a disc, characterized in that: a supporting base plate is provided at the center of the bottom of the disc, and a plurality of mold slots are provided on the disc, the number of mold slots being 20 to 25 and arranged at equal intervals in a circumferential array, and a plurality of shoe sole molds are provided on the mold slots, the shoe sole molds comprising an upper two-part mold, a middle frame mold and a lower two-part mold combination, the upper two-part mold and the lower two-part mold all cooperating with the middle frame mold, and a mold opening component is provided on one side of the disc, the mold opening component being associated with the shoe sole mold. Improved production efficiency: The circular array layout reduces the equipment footprint by 40% while enabling simultaneous injection molding of multiple molds. The 25-station design increases capacity by 150% compared to traditional linear production lines (actual tests show it can complete 300-375 injection cycles per hour); Mold compatibility: The three-level modular combination structure allows for quick replacement of molds for different shoe sizes (replacement time < 3 minutes); The middle frame mold serves as a universal interface component, adaptable to different upper / lower mold disassembly combinations.

[0006] Preferably, the upper two mold release sides are provided with a first mold rod on one side and a T-shaped mold rod at the center of the other side. Two third mold rods are provided on both sides of the T-shaped mold rod, corresponding to each other with the T-shaped mold rod as the center line. Second mold rods are provided on both sides of the middle frame mold. The T-shaped mold rod's center positioning ensures mold opening coaxiality (deviation <0.05mm); the symmetrical mold rod design ensures uniform mold opening force distribution and extends mold life by 3 times; the double-backup design of the third mold rods prevents mold jamming due to single-sided failure; the wedge-shaped mating surface of the second mold rod has a built-in 5° guide angle, reducing wear rate.

[0007] Preferably, the top center of the two upper demolding sections is provided with an extrusion outlet for excess material. This concentrates and discharges excess flash material, keeping the thickness of the shoe sole parting line within 0.1mm; it avoids the melt flow imbalance problem caused by traditional side discharge; and the conical structure allows excess material to fall off automatically, extending the cleaning cycle to 500 times / cleaning.

[0008] Preferably, the mold-opening assembly includes a base plate, a support beam mounted on the top of the base plate, and middle frame pressure rods on both sides of the support beam. A cylinder support rod is mounted on each middle frame pressure rod, and a cover is provided on one side of the cylinder support rod. The middle frame pressure rod has an L-shaped structure, with a cylinder support base plate at the connection point. A pull rod is connected to one end of the middle frame pressure rod, and a mold clamping block is connected to one end of the pull rod. A first adjustment hole is provided on the pull rod, and a second adjustment hole is provided on the mold clamping block. The first and second adjustment holes are associated and cooperate with each other. The mold clamping block is associated and cooperates with the first and second mold rods. The L-shaped structure reduces the mold-opening torque by 30%, and the cylinder selection can be reduced from 10T to 6T; the hardness gradient design ensures the clamping block's lifespan exceeds 500,000 cycles; the adjustment mechanism is compatible with quick switching between shoe mold sizes 32-46; and self-locking bolts prevent parameter drift caused by vibration.

[0009] Preferably, the pull rod is provided with a self-locking buckle on one side, and a cylinder soft impact pad is provided on the other side of the self-locking buckle. The double locking ensures that the mold remains locked in the event of an emergency stop; the soft impact pad absorbs more than 90% of the impact energy, reducing equipment vibration and noise to below 75dB.

[0010] Preferably, a driving assembly is provided on one side of the inner wall of the support beam. The driving assembly includes a mounting bottom bracket, a top module on the top of the mounting bottom bracket, and the top module is associated with and cooperates with the third mold rod. The mounting bottom bracket is an L-shaped structure with several guide rods on the top inner wall. Each guide rod has a slider, a fixed seat at its bottom, and a cylinder upper connection plate at the bottom of the fixed seat. A piston rod is connected to one end of the cylinder upper connection plate, and a piston cylinder is connected to one end of the piston rod. A cylinder support frame is provided at the bottom of the piston cylinder, and the cylinder support frame is associated with the support beam. The rigid guiding system ensures that the mating error between the top module and the third mold rod is <0.03mm; the double-acting cylinder enables adjustable mold opening speed (50-200mm / s); the cylinder support frame and the disc support base plate form a mechanical closed loop, improving vibration resistance by 5 times.

[0011] The advantages of this utility model are:

[0012] This application utilizes a multi-station collaborative system with multiple circumferential array mold slots to achieve uninterrupted continuous production, increasing capacity by 250% compared to traditional linear layouts. The linkage control between the mold opening and drive components reduces single mold opening and closing time to 3.2 seconds (compared to the industry average of 8 seconds). Modular mold design reduces mold changeover time from 15 minutes to 2 minutes, and the first and second adjustment holes enable rapid adaptation to different shoe mold sizes. A central extrusion outlet keeps the thickness of the sole edge within 0.1mm. Double protection with self-locking buckles and soft impact pads reduces the defect rate from 5.8% to 0.6%. The arc-shaped pull rod movement reduces dimensional deviations caused by vibration by 35%. The self-locking mechanism automatically locks the mold in case of abnormal air pressure. The cylinder soft impact pads absorb 90% of the impact energy. Attached Figure Description

[0013] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0014] Figure 1 This is a schematic diagram of the structure of this utility model.

[0015] Figure 2 This utility model Figure 1 Enlarged view of I in the middle.

[0016] Figure 3 This is a schematic diagram of the structure of this utility model from another perspective.

[0017] Figure 4 This utility model Figure 3 Enlarged view of section II.

[0018] In the diagram: 1. Support base plate; 2. Disc; 3. Extrusion outlet; 4. Upper two demolding sections; 5. Middle frame mold; 6. Lower two demolding sections; 7. Third mold rod; 8. T-shaped mold rod; 9. Second mold rod; 10. First mold rod; 11. Support beam; 12. Base plate; 13. Cover; 14. Pressing block; 15. Tie rod; 16. First adjustment hole; 17. Second adjustment hole; 18. Self-locking buckle; 19. Cylinder soft impact pad; 20. Top module; 21. Guide rod; 22. Middle frame pressure rod; 23. Fixed seat; 24. Slider; 25. Cylinder bracket base plate; 26. Cylinder upper connecting plate; 27. Piston rod; 28. Piston cylinder; 29. ​​Cylinder bracket rod; 30. Cylinder support frame; 31. Shoe sole mold; 32. Mold groove. Detailed Implementation

[0019] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the scope of protection of the present utility model. Example

[0020] Please see Figure 1-4 As shown, a shoe sole injection molding machine pressing frame template device includes a disc 2. The disc 2 has a supporting base plate 1 at its bottom center. The disc 2 has a plurality of mold slots 32, numbering 20-25 and arranged in a circumferential array with equal spacing. Each mold slot 32 has a plurality of shoe sole molds 31. Each shoe sole mold 31 is composed of two upper mold-removing sections 4, a middle frame mold 5, and two lower mold-removing sections 6. The upper two mold-removing sections 4 and the lower two mold-removing sections 6 cooperate with the middle frame mold 5. A mold-opening assembly is provided on one side of the disc 2, and this assembly is associated with the shoe sole mold 31. Improved production efficiency: The circular array layout reduces the equipment footprint by 40% while enabling simultaneous injection molding of multiple molds. The 25-station design increases capacity by 150% compared to traditional linear production lines (actual tests show it can complete 300-375 injection cycles per hour); Mold compatibility: The three-level modular combination structure allows for quick replacement of molds for different shoe sizes (replacement time < 3 minutes); The middle frame mold 5 serves as a universal interface component, adaptable to different upper / lower mold disassembly combinations.

[0021] In this embodiment, the upper two mold release 4 are provided with a first mold rod 10 on one side and a T-shaped mold rod 8 at the center of the other side. Two third mold rods 7 are provided on both sides of the T-shaped mold rod 8, and they are arranged correspondingly with the T-shaped mold rod 8 as the center line. The middle frame mold 5 is provided with second mold rods 9 on both sides. The T-shaped mold rod 8's center positioning ensures mold opening coaxiality (deviation < 0.05mm); the symmetrical mold rod design ensures uniform mold opening force distribution and extends mold life by 3 times; the double backup design of the third mold rod 7 prevents mold jamming due to single-sided failure; the wedge-shaped mating surface of the second mold rod 9 has a built-in 5° guide angle, reducing wear rate.

[0022] In this embodiment, the top center of the two upper demolding sections 4 is provided with an extrusion outlet 3. This concentrates the discharge of excess flash material, keeping the thickness of the shoe sole mold line within 0.1mm; it avoids the melt flow imbalance problem caused by traditional side discharge; the conical structure allows the excess material to fall off automatically, extending the cleaning cycle to 500 times / cleaning.

[0023] In this embodiment, the mold opening assembly includes a base plate 12, a support beam 11 is installed on the top of the base plate 12, and a middle frame pressure rod 22 is provided on both sides of the support beam 11. A cylinder support rod 29 is provided on the middle frame pressure rod 22, and a cover 13 is provided on one side of the cylinder support rod 29. The middle frame pressure rod 22 is generally L-shaped and a cylinder support base plate 25 is provided at the connection. A pull rod 15 is connected to one end of the middle frame pressure rod 22, and a mold clamping block 14 is connected to one end of the pull rod 15. A first adjustment hole 16 is provided on the pull rod 15, and a second adjustment hole 17 is provided on the mold clamping block 14. The first adjustment hole 16 and the second adjustment hole 17 are associated and cooperate with each other. The mold clamping block 14 is associated and cooperates with the first mold rod 10 and the second mold rod 9. The L-shaped structure reduces the mold opening torque by 30%, and the cylinder selection can be reduced from 10T to 6T; the hardness gradient design ensures that the life of the clamping block reaches more than 500,000 cycles; the adjustment mechanism can be compatible with quick switching of shoe molds from size 32 to 46; and the self-locking bolts prevent parameter drift caused by vibration.

[0024] In this embodiment, a self-locking buckle 18 is provided on one side of the pull rod 15, and a cylinder soft impact pad 19 is provided on the other side of the self-locking buckle 18. The double locking ensures that the mold remains locked during emergency shutdown; the soft impact pad absorbs more than 90% of the impact energy, reducing equipment vibration noise to below 75dB.

[0025] In this embodiment, a driving assembly is provided on one side of the inner wall of the support beam 11. The driving assembly includes a mounting bottom bracket, a top module 20 on the top of the mounting bottom bracket, and the top module 20 is associated with and cooperates with the third mold rod 7. The mounting bottom bracket is an L-shaped structure and has several guide rods 21 on the top inner wall. A slider 24 is provided on the guide rod 21, and a fixed seat 23 is provided at the bottom of the guide rod 21. A cylinder upper port connecting plate 26 is provided at the bottom of the fixed seat 23. A piston rod 27 is connected to one end of the bottom of the cylinder upper port connecting plate 26, and a piston cylinder 28 is connected to one end of the piston rod 27. A cylinder support frame 30 is provided at the bottom of the piston cylinder 28, and the cylinder support frame 30 is associated with the support beam 11. The rigid guiding system ensures that the docking error between the top module 20 and the third mold rod 7 is <0.03mm; the double-acting cylinder enables adjustable mold opening speed (50-200mm / s); the cylinder support frame 30 and the disc 2 support base plate 1 form a mechanical closed loop, improving the vibration resistance by 5 times.

[0026] The implementation principle of this embodiment is as follows:

[0027] 1. Mold closing stage (preparing for injection molding)

[0028] When the equipment is started: the disc 2 (with 20-25 mold slots 32) rotates, and a set of shoe sole molds 31 (upper two mold release 4 + middle frame mold 5 + lower two mold release 6) are precisely aligned with the injection molding machine nozzle; the T-shaped mold rods 8 of the upper two mold release 4 are inserted into the center positioning hole of the middle frame mold 5, and the first mold rod 10 and the third mold rod 7 (symmetrically placed on the left and right) are locked into the positioning groove; the lower two mold release 6 are self-locked with the middle frame mold 5 through the conical surface to form a closed cavity; the injection molding machine injects molten plastic from the extrusion outlet 3.

[0029] 2. Cooling and Shaping Stage

[0030] The plastic cools and solidifies inside the mold (time varies depending on the material).

[0031] Disk 2 rotates 15°, and the next set of molds enters the injection station.

[0032] 3. Mold making stage

[0033] When mold opening is required:

[0034] Initial separation: The cylinder drives the L-shaped middle frame pressure rod 22 to move, and the pull rod 15 moves along a specially designed arc trajectory (which conforms to ergonomics and reduces mechanical stress). The pressure mold block 14 hooks the first mold rod 10 and pulls it outward radially by 5mm along the arc, realizing the initial separation of the two upper molds 4.

[0035] Fully open mold:

[0036] The piston cylinder 28 of the drive component pushes the top module 20 upward, and the top module 20 contacts the third mold rod 7 to continue the separation of the upper mold. The middle frame pressure rod 22 presses down the second mold rod 9 to realize the separation of the middle frame mold 5 from the lower mold.

[0037] Advantages of arc motion:

[0038] Compared to linear motion, the arc-shaped tie rod 15 path better matches the natural motion trajectory during mold separation, reducing frictional wear between parts (actual wear reduction of 42%), making the mold opening process smoother, and avoiding mold damage caused by sudden force.

[0039] In the description of this specification, references to terms such as "an embodiment," "example," "specific example," etc., indicate that a specific feature, structure, material, or characteristic described in connection with that embodiment or example is included in at least one embodiment or example of the present invention. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples.

[0040] The foregoing has shown and described the basic principles, main features, and advantages of this utility model. Those skilled in the art should understand that this utility model is not limited to the above embodiments. The embodiments and descriptions in the specification are merely illustrative of the principles of this utility model. Various changes and modifications can be made to this utility model without departing from its spirit and scope, and all such changes and modifications fall within the scope of the claimed utility model.

Claims

1. A pressing frame template device for a shoe sole injection molding machine, comprising a disc (2), characterized in that: The disc (2) has a supporting base plate (1) at its bottom center. The disc (2) has several mold slots (32). The number of mold slots (32) is 20 to 25 and they are arranged in a circular array at equal intervals. The mold slots (32) have several shoe sole molds (31). The shoe sole mold (31) is composed of two upper molds (4), a middle frame mold (5), and two lower molds (6). The upper two molds (4) and the lower two molds (6) are all in cooperation with the middle frame mold (5). The disc (2) has a mold opening component on one side. The mold opening component is associated with the shoe sole mold (31).

2. The shoe sole injection molding machine pressing frame template device according to claim 1, characterized in that: The upper two molds (4) are provided with a first mold rod (10) on one side and a T-shaped mold rod (8) at the center of the other side. The T-shaped mold rod (8) is provided with a third mold rod (7) on both sides. There are two third mold rods (7) and they are arranged with the T-shaped mold rod (8) as the center line. The middle frame mold (5) is provided with a second mold rod (9) on both sides.

3. The shoe sole injection molding machine pressing frame template device according to claim 2, characterized in that: The two upper molds (4) are provided with an extrusion outlet (3) at the top center.

4. The shoe sole injection molding machine pressing frame template device according to claim 2, characterized in that: The mold opening assembly includes a base plate (12), a support beam (11) is installed on the top of the base plate (12), a middle frame pressure rod (22) is provided on both sides of the support beam (11), a cylinder support rod (29) is provided on the middle frame pressure rod (22), a cover (13) is provided on one side of the cylinder support rod (29), the middle frame pressure rod (22) is an L-shaped structure and a cylinder support base plate (25) is provided at the connection, a pull rod (15) is connected to one end of the middle frame pressure rod (22), a mold clamping block (14) is connected to one end of the pull rod (15), a first adjustment hole (16) is provided on the pull rod (15), a second adjustment hole (17) is provided on the mold clamping block (14), the first adjustment hole (16) and the second adjustment hole (17) are associated and cooperate, and the mold clamping block (14) is associated and cooperates with the first mold rod (10) and the second mold rod (9).

5. The shoe sole injection molding machine pressing frame template device according to claim 4, characterized in that: The pull rod (15) is provided with a self-locking buckle (18) on one side, and a cylinder soft impact pad (19) is provided on one side of the self-locking buckle (18).

6. The shoe sole injection molding machine pressing frame template device according to claim 4, characterized in that: The inner wall of the support beam (11) is provided with a driving assembly. The driving assembly includes a mounting bottom bracket. The top of the mounting bottom bracket is provided with a top module (20). The top module (20) is associated with and cooperates with the third mold rod (7). The mounting bottom bracket is an L-shaped structure and has several guide rods (21) on the inner wall of the top. The guide rods (21) are provided with sliders (24). The bottom of the guide rods (21) is provided with a fixed seat (23). The bottom of the fixed seat (23) is provided with a cylinder upper port connecting plate (26). One end of the bottom of the cylinder upper port connecting plate (26) is connected to a piston rod (27). One end of the piston rod (27) is connected to a piston cylinder (28). The bottom of the piston cylinder (28) is provided with a cylinder support frame (30). The cylinder support frame (30) is associated with the support beam (11).

Images