Sole mold opening mechanism
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Applications(China)
- Current Assignee / Owner
- HANDAN LUAN SHOES CO LTD
- Filing Date
- 2026-05-22
- Publication Date
- 2026-07-21
Smart Images
Figure CN122425861A_ABST
Abstract
Description
Technical Field
[0001] This invention relates to the field of shoe sole mold opening technology, and more specifically, to a shoe sole mold opening mechanism. Background Technology
[0002] Safety shoe soles are typically manufactured using injection molding. The mold generally includes a bottom mold, a middle mold, and a top mold, all hinged at one end and stacked at the other. After injection molding, the top and middle molds need to be opened sequentially to remove the finished product. Existing technology, such as Chinese patent document CN202423241074.2, discloses a mold opening device, but it still has the following shortcomings: 1. Traditional molds use mechanical locks between the bottom and top molds. Opening the mold requires a cylinder to unlock it, and closing it requires manual locking, resulting in cumbersome operation, low production efficiency, and susceptibility to product quality issues due to operational errors; 2. To achieve sequential opening of the middle and top molds, this opening device requires multiple cylinders, mold hooks, slide rails, and crossbeams, resulting in a complex overall structure, large space occupation, high manufacturing costs, and severe wear and tear after long-term use, making maintenance difficult. Summary of the Invention
[0003] To address the above deficiencies, this invention provides a shoe sole mold opening mechanism to solve the aforementioned problems.
[0004] To achieve the above objectives, the present invention adopts the following technical solution: The shoe sole mold opening mechanism includes a base, a rotating platform, molds, and longitudinal beams; the molds are evenly distributed on the rotating platform, and the molds are divided into a bottom mold, a middle mold, and an upper mold. The bottom mold, middle mold, and upper mold are hinged at one end and stacked at the other end. It also includes: The pressure ring is fixedly installed on the base. The pressure ring has a notch. When the mold rotates with the rotating table into the coverage area of the pressure ring, the pressure ring presses the stacked end of the mold tightly. When the mold rotates to the notch position, the stacked end of the mold can be opened. At least two hydraulic cylinders are provided, with the cylinder body of each hydraulic cylinder hinged to the longitudinal beam, and each hydraulic cylinder having a movable end at its telescopic end; the sides of the middle mold and the upper mold are respectively provided with fixed ends, the positions of which correspond to the movable ends of the corresponding hydraulic cylinders. When the hydraulic cylinder extends, its moving end abuts against the corresponding fixed end, and the moving end and the fixed end are combined into an inseparable state by means of pure mechanical or magnetic attraction; when the hydraulic cylinder continues to extend, the moving end pushes the fixed end, thereby pushing the middle mold or the upper mold to rotate and open around the hinge end.
[0005] Furthermore, the mobile end is magnetically attached to the fixed end. The mobile end includes a connecting seat installed on the telescopic end of the hydraulic cylinder, and an electromagnet is installed on the connecting seat.
[0006] Furthermore, the fixed end includes abutment blocks installed on both sides of the middle mold and the upper mold. The abutment blocks are hinged to the middle mold and the upper mold respectively. Torsion springs are installed between the abutment blocks and the middle mold and the upper mold, and the abutment blocks maintain a specified angle. The abutment blocks have grooves that fit with the electromagnets.
[0007] It uses an electromagnet in conjunction with a grooved abutment block, which is attracted when energized and separated when de-energized. It has a fast response and a firm connection. The torsion spring keeps the abutment block at a preset angle for easy alignment.
[0008] Furthermore, the fixed end includes a hollow tube, which is located on one side of the middle mold and the upper mold.
[0009] Furthermore, the movable end includes a main rod installed at the telescopic end of the hydraulic cylinder. One end of the main rod is a trigger end, and the other end is a support end, with the diameter of the support end being larger than that of the trigger end. A sleeve is provided on the outer wall of the main rod, and the sleeve can slide along the main rod. The inner wall of the sleeve is provided with ring one and ring two, and the side wall of the trigger end is provided with a limiting ring, which is located in the middle of ring one and ring two. A compression spring one is provided between ring one and the limiting ring, and a compression spring two is provided between ring two and the limiting ring. The arrangement of compression spring one and compression spring two keeps the main rod in the middle position. A rotating block is hinged to one end of the sleeve. The rotating block is a rectangular block, and there is a pair of rotating blocks arranged symmetrically. An arc-shaped retaining ring is provided on the side wall of the rotating block. A torsion space is provided between adjacent rotating blocks. A limiting block is installed at one end of the trigger end. When the limiting block leaves the torsion space, the arc-shaped retaining ring can rotate. When the limiting block fills the torsion space, the arc-shaped retaining ring cannot rotate.
[0010] Furthermore, one end of the arc-shaped retaining ring is L-shaped, and the side of the limiting block that contacts the hollow tube is an arc surface, the curvature of which matches the curvature of the hollow tube; a connecting rod is installed on the limiting block, a pulley is installed at one end of the connecting rod, and inclined surfaces that cooperate with the pulley are installed on both sides of the limiting block.
[0011] It adopts a hollow tube and arc-shaped retaining ring structure, and controls the opening and locking of the retaining ring through a limit block. It can achieve reliable gripping and releasing without electrical control, and is suitable for occasions that are sensitive to electromagnetic interference or require simplified electrical systems.
[0012] Furthermore, a sliding wheel is installed on the top of the mold, and the sliding wheel fits into the pressure ring.
[0013] Furthermore, an electric telescopic rod is installed between the longitudinal beam and the hydraulic cylinder.
[0014] Furthermore, a tension spring is installed between the longitudinal beam and the hydraulic cylinder.
[0015] The beneficial effects of this invention are: by using the pressure ring fixedly installed on the base and the notch opened, in conjunction with the intermittent rotation of the rotating table, the automatic clamping of the mold in the non-mold opening station and the automatic release in the mold opening station are realized, without the need for manual or additional locking operations, which greatly improves the level of production automation and reduces labor intensity. Only two hydraulic cylinders and matching moving and fixed ends are needed. When the hydraulic cylinders extend, the moving and fixed ends are combined into an inseparable state through purely mechanical or magnetic attraction. Further extension can sequentially push the upper and middle molds to rotate around the hinged end to open. Compared with the complex structure of multiple cylinders, slide rails, and mold hooks in the prior art, the mold opening mechanism of this invention has fewer parts, a simpler structure, and no easily damaged slide rails, which significantly reduces the manufacturing cost. Moreover, daily maintenance only requires checking the hydraulic cylinders and connecting parts, making maintenance and replacement convenient. Attached Figure Description
[0016] Figure 1 This is a schematic diagram of the mold opening mechanism for the shoe sole mold described in this invention; Figure 2 yes Figure 1 A schematic diagram of the first embodiment of the mobile terminal at point A in the middle; Figure 3 This is a schematic diagram of Embodiment 2 for mobile devices; Figure 4 yes Figure 3 Enlarged view of point B in the middle; Figure 5 This is an enlarged schematic diagram of the sleeve; Figure 6 This is a schematic diagram showing the state of the hollow tube being tightly fitted with an arc-shaped retaining ring; Figure 7 This is a schematic diagram showing the state of the arc-shaped retaining ring releasing the hollow tube; In the diagram, 1. Base; 2. Rotating platform; 3. Mold; 301. Bottom mold; 302. Middle mold; 303. Upper mold; 304. Longitudinal beam; 4. Pressure ring; 5. Notch; 6. Hydraulic cylinder; 601. Moving end; 602. Fixed end; 21. Connecting seat; 22. Electromagnet; 31. Abutment block; 32. Torsion spring; 33. Groove; 41. Hollow tube; 51. Main rod; 52. Sleeve; 53. Ring 1; 54. Ring 2; 55. Limiting ring; 56. Compression spring 1; 57. Compression spring 2; 58. Rotating block; 59. Arc-shaped retaining ring; 591. Torsion space; 592. Limiting block; 5101. Trigger end; 5102. Support end; 61. Arc surface; 62. Connecting rod; 63. Pulley; 64. Inclined surface; 71. Sliding wheel; 72. Electric telescopic rod; 73. Tension spring. Detailed Implementation
[0017] To make the above-mentioned objects, features and advantages of the present invention more apparent and understandable, the specific embodiments of the present invention will be described in detail below with reference to the accompanying drawings.
[0018] This application provides a mold opening mechanism for shoe sole molds; please refer to it. Figures 1-7The system includes a base 1, a rotating platform 2, molds 3, and longitudinal beams 304. The molds 3 are evenly distributed on the rotating platform 2 and are divided into a bottom mold 301, a middle mold 302, and an upper mold 303. The bottom mold 301, middle mold 302, and upper mold 303 are hinged at one end and stacked at the other end. The system is characterized by further including: The pressure ring 4 is fixedly installed on the base 1. The pressure ring 4 has a notch 5. When the mold 3 rotates with the rotating table 2 into the coverage area of the pressure ring 4, the pressure ring 4 presses the stacked end of the mold 3 tightly. When the mold 3 rotates to the position of the notch 5, the stacked end of the mold 3 can be opened. At least two hydraulic cylinders 6 are provided, and the cylinder bodies of each hydraulic cylinder 6 are respectively hinged to the longitudinal beam 304. The telescopic end of each hydraulic cylinder 6 is provided with a movable end 601. The sides of the middle mold 302 and the upper mold 303 are respectively provided with fixed ends 602, and the positions of the fixed ends 602 correspond to the movable ends 601 of the corresponding hydraulic cylinder 6. When the hydraulic cylinder 6 extends, its moving end 601 abuts against the corresponding fixed end 602, and the moving end 601 and the fixed end 602 are combined into an inseparable state by means of pure mechanical or magnetic attraction; when the hydraulic cylinder 6 continues to extend, the moving end 601 pushes the fixed end 602, thereby pushing the middle mold 302 or the upper mold 303 to rotate and open around the hinge end.
[0019] In practical applications, the base 1 is equipped with a drive system (such as a servo motor and reducer) for the rotating platform 2, which can drive the rotating platform 2 to rotate at a uniform speed intermittently. The molds 3 are evenly distributed around the circumference of the rotating platform 2. In the initial state, the bottom mold 301, the middle mold 302, and the upper mold 303 are in the closed state (the stacked ends are closed). The pressure ring 4 is fixedly installed on the base 1, and its coverage area covers the entire circumference except for the notch 5. When the mold 3 rotates with the rotating platform 2 to the area covered by the pressure ring 4, the pressure ring 4 presses the stacked ends of the mold 3 to ensure that the mold 3 remains closed in non-opening positions. When the mold 3 rotates to the position of the notch 5, the constraint of the pressure ring 4 on the stacked ends disappears, and the mold 3 is allowed to open. The mold opening process is as follows: When a certain mold 3 reaches the position of the notch 5, the control system controls the corresponding hydraulic cylinder 6 to move according to the process sequence (first open the upper mold 303, then open the middle mold 302); Taking the upper mold 303 as an example, the corresponding hydraulic cylinder 6 extends, and its telescopic end 601 moves toward the fixed end 602 on the side of the upper mold 303 and abuts against it. Then, the two are combined into an inseparable state by purely mechanical or magnetic attraction. The hydraulic cylinder 6 continues to extend, and pushes the fixed end 602 through the moving end 601, thereby pushing the upper mold 303 to rotate upward around the hinge end and open. After the upper mold 303 is opened to the position. The hydraulic cylinder 6 corresponding to the control mold 302 pushes the mold 302 to open with the same action; after the mold is opened, the sole can be removed and the mold cavity cleaned by manual or automatic robotic arm at this station; Finally, the hydraulic cylinder 6 retracts completely, and the mold 3 closes automatically under the action of gravity and possibly a reset spring; the rotating table 2 continues to rotate, and the next mold 3 enters the notch 5 position, repeating the above cycle.
[0020] Example 1 for mobile devices, see below. Figure 1 and Figure 2 The mobile end 601 is connected to the fixed end 602 by magnetic attraction. The mobile end 601 includes a connecting seat 21 installed on the telescopic end of the hydraulic cylinder 6, and an electromagnet 22 is installed on the connecting seat 21.
[0021] In practical applications, the hydraulic cylinder 6 extends, causing the connecting seat 21 and the electromagnet 22 to move synchronously until they abut against the fixed end 602.
[0022] Example 1 of fixed end 602, refer to Figure 1 and Figure 2 The fixed end 602 includes abutment blocks 31 installed on both sides of the middle mold 302 and the upper mold 303. The abutment blocks 31 are hinged to the middle mold 302 and the upper mold 303 respectively. Torsion springs 32 are installed between the abutment blocks 31 and the middle mold 302 and the upper mold 303. The abutment blocks 31 maintain a specified angle. The abutment blocks 31 have grooves 33 that fit with the electromagnet 22.
[0023] In practical applications, the hydraulic cylinder 6 extends to allow the electromagnet 22 to enter the groove 33 and press against it. Then, the electromagnet 22 is energized to generate a strong magnetic attraction, which firmly connects the moving end 601 with the abutment block 31. The hydraulic cylinder 6 continues to extend, pushing the abutment block 31 to open the upper mold 303 or the middle mold 302. After the mold is opened, the hydraulic cylinder 6 shortens and resets, the electromagnet 22 is de-energized, the magnetic force disappears, the hydraulic cylinder 6 retracts, the electromagnet 22 exits the groove 33, and the torsion spring 32 resets the abutment block 31.
[0024] Embodiment 2 of fixed end 602, refer to Figures 1 to 7 The fixed end 602 includes a hollow tube 41, which is located on one side of the middle mold 302 and the upper mold 303.
[0025] In practical applications, when the hydraulic cylinder 6 extends, the moving end 601 can cover the fixed end 602 to achieve fixation.
[0026] Example 2 of mobile terminal 601, refer to Figures 3 to 7The movable end 601 includes a main rod 51 installed at the telescopic end of the hydraulic cylinder 6. One end of the main rod 51 is a trigger end 5101, and the other end is a support end 5102. The diameter of the support end 5102 is larger than the diameter of the trigger end 5101. A sleeve 52 is provided on the outer wall of the main rod 51, and the sleeve 52 can slide along the main rod 51. A ring 1 53 and a ring 2 54 are provided on the inner wall of the sleeve 52. A limiting ring 55 is provided on the side wall of the trigger end 5101. The limiting ring 55 is located in the middle of the ring 1 53 and the ring 2 54. A compression spring 1 56 is provided between the ring 1 53 and the limiting ring 55, and a compression spring 2 56 is provided between the ring 2 54 and the limiting ring 55. There is a second compression spring 57; the arrangement of the first compression spring 56 and the second compression spring 57 keeps the main rod 51 in the middle position; a rotating block 58 is hinged to one end of the sleeve 52. The rotating block 58 is a rectangular block. There is a pair of rotating blocks 58 arranged symmetrically. The side wall of the rotating block 58 is provided with an arc-shaped retaining ring 59; a torsion space 591 is provided between adjacent rotating blocks 58. A limit block 592 is installed at one end of the trigger end 5101. When the limit block 592 leaves the torsion space 591, the arc-shaped retaining ring 59 can rotate. When the limit block 592 fills the torsion space 591, the arc-shaped retaining ring 59 cannot rotate.
[0027] In practical applications Figure 6 The diagram shows the relative positions of four arc-shaped retaining rings 59, hollow tube 41, and limiting block 592 in four consecutive states, labeled from left to right as left 1, left 2, left 3, and left 4 respectively. The process of the arc-shaped retaining ring 59 encasing the hollow tube 41 is as follows: In the left 1 state, the arc-shaped retaining ring 59 abuts against the hollow tube 41 and cannot rotate. The main rod 51 and the sleeve 52 move relative to each other until the limit block 592 leaves the torsion space 591. At this time, the arc-shaped retaining ring 59 can rotate (as in the process from left 1 to left 2). As the hydraulic cylinder 6 continues to extend, such as from left 2 to left 3, the arc-shaped retaining ring 59 gradually opens; Finally, from left 3 to left 4, the arc-shaped retaining ring 59 completely encloses the hollow tube 41. The main rod 51 is kept in the middle position by the setting of compression spring 1 56 and compression spring 2 57, and the limit block 592 returns to the position of torsion space 591. At this time, the arc-shaped retaining ring 59 cannot be opened. The limiting block 592 plays a major supporting role for the hollow tube 41. When the hydraulic cylinder 6 extends and opens the middle mold 302 or the upper mold 303, the arc-shaped retaining ring 59 can tightly hold the hollow tube 41 to prevent it from falling off. The process of the arc-shaped retaining ring 59 disengaging from the hollow tube 41 is as follows: Figure 7 The diagram shows the relative positions of four arc-shaped retaining rings 59, hollow tube 41, and limiting block 592 in four consecutive states, labeled from left to right as left 5, left 6, left 7, and left 8 respectively. When the hydraulic cylinder 6 shortens, the arc-shaped retaining ring 59 jams the hollow tube 41, and relative movement occurs between the trigger end 5101 and the sleeve 52, such as from left 5 to left 6. The limit block 592 moves out of the torsion space 591 in the downward direction. At this point, the arc-shaped retaining ring 59 can rotate, and the arc-shaped retaining ring 59 opens, as... Figures 6 to 7 Under the pulling force of hydraulic cylinder 6, the arc-shaped retaining ring 59 separates from the hollow tube 41; Finally, the compression springs 56 and 57 keep the main rod 51 in the middle position, the limit block 592 resets, and the limit block 592 pushes the arc-shaped retaining ring 59 to reset.
[0028] Reference Figures 3 to 7 One end of the arc-shaped retaining ring 59 is L-shaped, and the side of the limiting block 592 that contacts the hollow tube 41 is an arc surface 61, the curvature of which matches the curvature of the hollow tube 41; a connecting rod 62 is installed on the limiting block 592, a pulley 63 is installed at one end of the connecting rod 62, and inclined surfaces 64 that cooperate with the pulley 63 are installed on both sides of the limiting block 592.
[0029] In practical applications, in order to better reset the arc-shaped retaining ring 59, a connecting rod 62 and a pulley 63 are set. When the arc-shaped retaining ring 59 and the limiting block 592 rotate and are fully opened, the connecting rod 62 drives the pulley 63 to abut against the inclined surface 64. At this time, when the arc-shaped retaining ring 59 is separated from the hollow tube 41, under the action of the compression spring 1 56 and the compression spring 2 57, the limiting block 592 actively pushes the arc-shaped retaining ring 59 to reset. One end of the arc-shaped retaining ring 59 is set to an L-shape to facilitate the entry of the hollow tube 41 into the arc-shaped retaining ring 59.
[0030] Reference Figure 2 The top of the mold 3 is equipped with a sliding wheel 71, which fits into the pressure ring 4.
[0031] In practical applications, the sliding wheel 71 can reduce the friction between the mold 3 and the pressure ring 4.
[0032] Reference Figure 3 An electric telescopic rod 72 is installed between the longitudinal beam 304 and the hydraulic cylinder 6.
[0033] In practical applications, the angle of the hydraulic cylinder 6 can be precisely controlled by the electric telescopic rod 72.
[0034] Reference Figure 2 A tension spring 73 is installed between the longitudinal beam 304 and the hydraulic cylinder 6.
[0035] In practical applications, since the working angle of the hydraulic cylinder 6 does not need to change frequently, the setting of the tension spring 73 can reduce costs while ensuring that the hydraulic cylinder 6 can still complete its work.
Claims
1. A shoe sole mold opening mechanism, comprising a base (1), a rotating platform (2), a mold (3), and a longitudinal beam (304); the molds (3) are evenly distributed on the rotating platform (2), and the molds (3) are divided into a bottom mold (301), a middle mold (302), and an upper mold (303), wherein the bottom mold (301), the middle mold (302), and the upper mold (303) are hinged at one end and stacked at the other end, characterized in that, Also includes: A pressure ring (4) is fixedly installed on the base (1). A notch (5) is provided on the pressure ring (4). When the mold (3) rotates with the rotating table (2) into the coverage area of the pressure ring (4), the pressure ring (4) presses the stacked end of the mold (3) tightly. When the mold (3) rotates to the position of the notch (5), the stacked end of the mold (3) can be opened. At least two hydraulic cylinders (6) are provided, and the cylinder bodies of each hydraulic cylinder (6) are respectively hinged to the longitudinal beam (304). The telescopic end of each hydraulic cylinder (6) is provided with a moving end (601). The sides of the middle mold (302) and the upper mold (303) are respectively provided with fixed ends (602), and the position of the fixed end (602) corresponds to the moving end (601) of the corresponding hydraulic cylinder (6). When the hydraulic cylinder (6) extends, its moving end (601) abuts against the corresponding fixed end (602), and the moving end (601) and the fixed end (602) are combined into an inseparable state by means of pure mechanical or magnetic attraction; when the hydraulic cylinder (6) continues to extend, the moving end (601) pushes the fixed end (602), thereby pushing the middle mold (302) or the upper mold (303) to rotate and open around the hinge end.
2. The shoe sole mold opening mechanism according to claim 1, characterized in that, The mobile end (601) is connected to the fixed end (602) by magnetic attraction. The mobile end (601) includes a connecting seat (21) installed on the telescopic end of the hydraulic cylinder (6), and an electromagnet (22) is installed on the connecting seat (21).
3. The shoe sole mold opening mechanism according to claim 2, characterized in that, The fixed end (602) includes abutment blocks (31) installed on both sides of the middle mold (302) and the upper mold (303). The abutment blocks (31) are hinged to the middle mold (302) and the upper mold (303) respectively. Torsion springs (32) are installed between the abutment blocks (31) and the middle mold (302) and the upper mold (303). The abutment blocks (31) maintain a specified angle. The abutment blocks (31) have grooves (33) that fit with the electromagnet (22).
4. The shoe sole mold opening mechanism according to claim 1, characterized in that, The fixed end (602) includes a hollow tube (41), which is located on one side of the middle mold (302) and the upper mold (303).
5. The shoe sole mold opening mechanism according to claim 4, characterized in that, The movable end (601) includes a main rod (51) installed on the telescopic end of the hydraulic cylinder (6). One end of the main rod (51) is a trigger end (5101), and the other end is a support end (5102). The diameter of the support end (5102) is larger than the diameter of the trigger end (5101). A sleeve (52) is provided on the outer wall of the main rod (51). The sleeve (52) can slide along the main rod (51). A ring I (53) and a ring II (54) are provided on the inner wall of the sleeve (52). A limiting ring (55) is provided on the side wall of the trigger end (5101). The limiting ring (55) is located in the middle of the ring I (53) and the ring II (54). A compression spring I (56) is provided between the ring I (53) and the limiting ring (55). A compression spring I (56) is provided between the ring I (53) and the limiting ring (55). 5) A compression spring 2 (57) is provided between them; the arrangement of compression spring 1 (56) and compression spring 2 (57) keeps the main rod (51) in the middle position; a rotating block (58) is hinged to one end of the sleeve (52). The rotating block (58) is a rectangular block. There is a pair of rotating blocks (58) arranged symmetrically. The side wall of the rotating block (58) is provided with an arc-shaped retaining ring (59); a torsion space (591) is provided between adjacent rotating blocks (58). A limit block (592) is installed at one end of the trigger end (5101). When the limit block (592) leaves the torsion space (591), the arc-shaped retaining ring (59) can rotate. When the limit block (592) fills the torsion space (591), the arc-shaped retaining ring (59) cannot rotate.
6. The shoe sole mold opening mechanism according to claim 5, characterized in that, One end of the arc-shaped retaining ring (59) is L-shaped, and the side of the limiting block (592) that contacts the hollow tube (41) is an arc surface (61), the curvature of which matches the curvature of the hollow tube (41); a connecting rod (62) is installed on the limiting block (592), a pulley (63) is installed at one end of the connecting rod (62), and inclined surfaces (64) that match the pulley (63) are installed on both sides of the limiting block (592).
7. The shoe sole mold opening mechanism according to claim 3 or 6, characterized in that, The top of the mold (3) is fitted with a sliding wheel (71), which is in contact with the pressure ring (4).
8. The shoe sole mold opening mechanism according to claim 7, characterized in that, An electric telescopic rod (72) is installed between the longitudinal beam (304) and the hydraulic cylinder (6).
9. The shoe sole mold opening mechanism according to claim 7, characterized in that, A tension spring (73) is installed between the longitudinal beam (304) and the hydraulic cylinder (6).