Shoe sole injection mold positioning device

Abstract

This utility model discloses a positioning device for a shoe sole injection mold, including a positioning platform with a closed bottom and an internal cavity. At least four linear grooves communicating with the cavity are opened through the top surface of the positioning platform. A horizontal support plate is fixedly installed inside the cavity, dividing it into an independent upper compartment and a lower compartment. A multi-directional positioning mechanism is installed on the upper surface of the support plate. The motion output end of the multi-directional positioning mechanism extends out of the linear groove and is detachably connected to a clamping pressure plate for pressing against the side wall of the mold. The clamping pressure plate is driven by the multi-directional positioning mechanism to perform linear displacement along the extension direction of the linear groove. The clamping surface of the clamping pressure plate is provided with distributed elastic elements. An operation execution mechanism for driving the multi-directional positioning mechanism is provided in the lower compartment. The operation execution mechanism includes an operation input end extending to the outer wall of the positioning platform. An external force is applied to the operation input end to trigger the multi-directional positioning mechanism to generate directional displacement, thereby driving the clamping pressure plate to position the mold.

Description

Technical Field

[0001] This utility model relates to the field of injection mold technology, specifically to a positioning device for shoe sole injection molds. Background Technology

[0002] In the injection molding process of shoe soles, the precise positioning of the mold directly affects the product molding quality and production efficiency. Precise mold positioning is achieved through the cooperation of guide pillars, guide sleeves, positioning pins and holes to ensure that the front mold and the rear mold are aligned without misalignment, thus avoiding flash and dimensional deviations.

[0003] In existing technologies, due to its inherent design limitations, the bidirectional clamping structure is difficult to apply uniform force to the mold. During high-pressure injection molding, the mold is prone to displacement or vibration due to uneven force. This instability directly leads to dimensional deviations in the injection-molded shoe soles, such as the sole length and width not conforming to the preset standards. At the same time, the lead screw mechanism used in traditional production equipment also has drawbacks. During operation, the lead screw needs to be locked repeatedly, which is not only cumbersome but also very laborious. In addition, some equipment uses hydraulic systems to provide power, but hydraulic systems have the risk of oil leakage, and the maintenance cost of hydraulic systems is high, requiring regular replacement of hydraulic oil. Utility Model Content

[0004] The purpose of this invention is to provide a positioning device for shoe sole injection molds, so as to solve the problem mentioned in the background art that the bidirectional clamping structure is difficult to apply force evenly to the mold, and the mold is prone to displacement and vibration during high-pressure injection, resulting in deviation of shoe sole dimensions.

[0005] To achieve the above objectives, this utility model provides the following technical solution: a positioning device for a shoe sole injection mold, comprising a positioning platform with a closed bottom and an internal cavity, wherein at least four linear grooves communicating with the cavity are opened through the top surface of the positioning platform, and a horizontal support plate is fixedly installed inside the cavity, dividing it into an independent upper compartment and a lower compartment. A multi-directional positioning mechanism is installed on the upper surface of the support plate, and the motion output end of the multi-directional positioning mechanism extends out of the linear groove and is detachably connected to a clamping pressure plate for pressing against the side wall of the mold. The clamping pressure plate is driven by the multi-directional positioning mechanism to perform linear displacement along the extension direction of the linear groove, and the clamping surface of the clamping pressure plate is provided with distributed elastic elements. An operation execution mechanism for driving the multi-directional positioning mechanism is provided in the lower compartment, and the operation execution mechanism includes an operation input end extending to the outer wall of the positioning platform; by applying external force to the operation input end, the multi-directional positioning mechanism is triggered to generate directional displacement, thereby driving the clamping pressure plate to perform clamping and positioning or releasing the clamping state of the mold.

[0006] According to the preferred embodiment of this technical solution, the multi-directional positioning mechanism includes a slide rail disposed on the upper surface of the support partition, a slider slidably connected on the slide rail, a base fixedly connected to the upper end of the slider, a vertically extending support rod fixedly connected to the surface of the base, and a screw hole opened at the end of the support rod, with a clamping pressure plate threadedly connected to the screw hole.

[0007] According to the preferred embodiment of this technical solution, the multi-directional positioning mechanism also includes a linkage plate connected to the output end of the operating actuator. A connecting column one is fixedly connected to the upper surface of the linkage plate, and a connecting column two is fixedly connected to the upper surface of the base. The outer walls of the connecting column one and the connecting column two are connected together to a transmission rod.

[0008] According to the preferred embodiment of this technical solution, the operating actuator includes a bearing seat 1 located at the bottom of the lower compartment. A support shaft is rotatably connected inside the bearing seat 1. The upper end of the support shaft passes through the supporting partition and the lower end is fixedly connected to the lower surface of the linkage plate. A bearing seat 2 is provided on the side wall of the lower compartment. A worm gear is rotatably connected inside the bearing seat 2, and the end of the worm gear extends to the outside of the positioning platform and is provided with a knob. A worm wheel is fixedly connected to the outer wall of the support shaft, and the worm gear and the worm wheel are meshed together.

[0009] In the preferred embodiment of this technical solution, the distributed elastic element is an array of cylindrical springs, one end of which is embedded inside the clamping pressure plate, and the other end protrudes from the clamping surface to form an elastic contact surface, and the compression direction of the spring is parallel to the displacement direction of the clamping pressure plate.

[0010] Based on the preferred embodiment of this technical solution, the slide rails are arranged in a cross shape, and each slider is independently connected to the corresponding clamping pressure plate through the base and the support rod.

[0011] In the preferred embodiment of this technical solution, a sealed bearing is provided at the penetration point between the supporting partition and the support shaft. The outer ring of the sealed bearing is interference-fitted with the supporting partition, and the inner ring is interference-fitted with the support shaft.

[0012] Compared with the prior art, the beneficial effects of this utility model are: 1. The cross-shaped slide rail design, combined with four sets of independently adjustable clamping plates, enables the mold to be clamped synchronously and accurately from four directions. Compared with the traditional two-way clamping structure, it improves the positioning effect of the mold and is suitable for high-precision shoe sole injection molding. 2. The worm gear transmission mechanism converts the rotational motion of the manual knob into linear clamping force, which is labor-saving to operate and has a self-locking characteristic, avoiding the risk of loosening that occurs with traditional lead screws. Attached Figure Description

[0013] Figure 1 This is a schematic diagram of one embodiment of the shoe sole injection mold positioning device of this utility model; Figure 2 This is a side sectional view of the present invention; Figure 3This is a schematic diagram of the internal structure of the positioning platform of this utility model; Figure 4 This is a schematic diagram of the structure of the multi-directional positioning mechanism of this utility model; Figure 5 This is a schematic diagram of the structure of the operating mechanism of this utility model.

[0014] In the diagram: 1. Positioning platform; 2. Linear slide; 3. Supporting partition; 4. Clamping pressure plate; 5. Slide rail; 6. Slider; 7. Base; 8. Support rod; 9. Linkage plate; 10. Connecting column one; 11. Connecting column two; 12. Transmission rod; 13. Bearing seat one; 14. Support shaft; 15. Bearing seat two; 16. Worm gear; 17. Knob; 18. Worm wheel; 19. Spring. Detailed Implementation

[0015] 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 protection scope of the present utility model.

[0016] Please see Figures 1-5This utility model provides an embodiment of a shoe sole injection mold positioning device, including a positioning platform 1 with a closed bottom and an internal cavity. At least four linear grooves 2 communicating with the cavity are formed through the top surface of the positioning platform 1. A horizontal support plate 3, dividing the cavity into an independent upper and lower compartment, is fixedly installed inside the cavity. A multi-directional positioning mechanism is installed on the upper surface of the support plate 3. The motion output end of the multi-directional positioning mechanism extends out of the linear grooves 2 and is detachably connected to a clamping pressure plate 4 for pressing against the mold sidewall. The clamping pressure plate 4 is driven by the multi-directional positioning mechanism to perform linear displacement along the extension direction of the linear grooves 2, and the clamping surface of the clamping pressure plate 4 is provided with distributed elastic elements. A lower compartment is provided with… The operating actuator that drives the multi-directional positioning mechanism includes an operating input end extending to the outer wall of the positioning table 1. External force is applied to the operating input end to trigger the multi-directional positioning mechanism to generate directional displacement, thereby driving the clamping plate 4 to perform clamping positioning or releasing of the mold. The positioning table 1 is made of metal, such as Q235 carbon steel, and is manufactured into a stable box structure through casting or welding. The linear slide 2 is a long, narrow through-slot that provides a track for the movement of the clamping plate 4. The supporting partition 3 is made of the same metal as the positioning table 1 and is fixed to the inner wall of the cavity by welding or bolting. The supporting partition 3 is part of the multi-directional positioning mechanism. An installation platform is provided, separating the multi-directional positioning mechanism and the operating actuator into different compartments to reduce mutual interference. When the operating actuator drives the multi-directional positioning mechanism, the multi-directional positioning mechanism converts the power of the operating actuator into the linear displacement of the clamping plate 4, realizing the clamping and positioning or release of the mold. The clamping plate 4 is detachably connected to the motion output end of the multi-directional positioning mechanism, and is made of metal, such as aluminum alloy, and is fixed to the motion output end by bolts or threads. When the clamping plate 4 moves to the position that contacts the side wall of the mold, it can apply a clamping force to the mold, fixing the mold on the positioning table 1. The distributed elastic element can provide clamping pressure. When plate 4 contacts the mold sidewall, it acts as a buffer, reducing damage to the mold surface during clamping and allowing the clamping plate 4 to fit more tightly against the mold sidewall, thus improving clamping stability. The function of the operating actuator is to convert the externally applied force into the power of the multi-directional positioning mechanism, thereby controlling the clamping plate 4. By applying external force to the operating input end, the operating actuator transmits the power to the multi-directional positioning mechanism, which drives the clamping plate 4 to make linear displacement along the linear slide 2. The distributed elastic element plays a buffering and adaptive adjustment role during clamping, thereby achieving accurate clamping and positioning or release of the shoe sole injection mold, achieving the positioning purpose of the mold.

[0017] Please see Figures 3-4A further solution based on this embodiment is as follows: The multi-directional positioning mechanism includes a slide rail 5 disposed on the upper surface of the supporting partition 3, a slider 6 slidably connected to the slide rail 5, a base 7 fixedly connected to the upper end face of the slider 6, a vertically extending support rod 8 fixedly connected to the surface of the base 7, and a screw hole opened at the end of the support rod 8. The clamping pressure plate 4 is threadedly connected to the screw hole. The slide rail 5 is made of metal, such as stainless steel, and is fixed to the supporting partition 3 by welding or bolting. When the slider 6 slides on the slide rail 5, it can drive the base 7 to move together, thereby realizing the clamping. The position of the pressure plate 4 can be adjusted. The base 7 is made of metal, such as aluminum alloy, and is fixed to the slider 6 by welding or bolting. The base 7 provides an installation platform for the support rod 8, so that the support rod 8 can be stably connected to the slider 6. The support rod 8 is made of metal, such as carbon steel, and is fixed to the base 7 by welding or bolting. The end of the support rod 8 is provided with a screw hole, and the clamping pressure plate 4 is threaded into the screw hole. By rotating the clamping pressure plate 4, the height position of the clamping pressure plate 4 on the support rod 8 can be adjusted to meet the clamping requirements of molds of different heights.

[0018] Please see Figures 3-4 A further solution based on this embodiment is as follows: The multi-directional positioning mechanism also includes a linkage plate 9 connected to the output end of the operating actuator. A connecting column 10 is fixedly connected to the upper surface of the linkage plate 9, and a connecting column 21 is fixedly connected to the upper surface of the base 7. The outer walls of the connecting column 10 and the connecting column 21 are connected to a transmission rod 12. The linkage plate 9 is made of metal, such as aluminum alloy, and is fixed to the output end of the operating actuator by welding or bolting. The connecting column 10 is fixedly connected to the upper surface of the linkage plate 9. When the operating actuator works, it drives the linkage plate 9 to move, and then drives the base 7 and the clamping pressure plate 4 to move through the connecting column 10, the transmission rod 12 and the connecting column 21. The connecting column 10 and the connecting column 21 are made of metal, such as stainless steel, and are fixed to the linkage plate 9 and the base 7 by welding. When the linkage plate 9 moves, the transmission rod 12 transmits power to the connecting column 21, driving the base 7 and the clamping pressure plate 4 to move linearly along the slide rail 5, thereby realizing the clamping and positioning or release of the clamping pressure plate 4 on the mold.

[0019] Please see Figure 3 and Figure 5A further solution based on this embodiment is as follows: The operating actuator includes a bearing seat 13 located at the bottom of the lower compartment. A support shaft 14 is rotatably connected inside the bearing seat 13. The upper end of the support shaft 14 passes through the supporting partition 3 and its end is fixedly connected to the lower surface of the linkage plate 9. A bearing seat 2 15 is provided on the side wall of the lower compartment. A worm gear 16 is rotatably connected inside the bearing seat 2 15, and the end of the worm gear 16 extends to the outside of the positioning platform 1 and is provided with a knob 17. A worm wheel 18 is fixedly connected to the outer wall of the support shaft 14. The worm gear 16 and the worm wheel 18 are meshed together. The bearing seat 13 is made of metal, such as copper alloy, and contains a bearing, such as a deep groove ball bearing. The bearing seat 13 provides rotational support for the support shaft 14, ensuring that the support shaft 14 can be level. The support shaft 14 rotates smoothly and steadily under the support of bearing housing 13, transmitting the power of the operating actuator to the linkage plate 9, driving the linkage plate 9 to move. Bearing housing 15 uses the same metal material and bearing type as bearing housing 13. The worm gear 18 uses the same metal material as the support shaft 14 and is fixed to the support shaft 14 by a key connection. When the operator rotates the knob 17, it drives the worm 16 to rotate. The worm 16 transmits power to the worm gear 18 through meshing transmission, thereby driving the support shaft 14 to rotate. This transmission between the worm 16 and the worm gear 18 has a self-locking function, which can ensure that the support shaft 14 and the linkage plate 9 can remain in the current position after the operating actuator stops working, preventing the clamping pressure plate 4 from loosening.

[0020] Please see Figure 4 A further solution based on this embodiment is as follows: the distributed elastic element is an array of cylindrical springs 19. One end of the spring 19 is embedded inside the clamping plate 4, and the other end protrudes from the clamping surface to form an elastic contact surface. The compression direction of the spring 19 is parallel to the displacement direction of the clamping plate 4. The cylindrical spring 19 is made of spring steel and its elasticity and strength are improved by heat treatment processes such as quenching and tempering. When the clamping plate 4 contacts the mold side wall, the spring 19 is compressed and generates elastic force. This elastic force can buffer the impact force on the mold surface during clamping and reduce damage to the mold surface. At the same time, it allows the clamping plate 4 to fit more tightly against the mold side wall and improves the stability of clamping.

[0021] Please refer to 4. A further solution based on this embodiment is as follows: the slide rails 5 are arranged in a cross shape, and each slider 6 is independently connected to the corresponding clamping plate 4 through the base 7 and the support rod 8. The cross-shaped slide rails 5 can clamp and position the mold from four directions, which improves the stability of clamping and the accuracy of positioning. When the operating actuator works, the clamping plates 4 in the four directions can move simultaneously or separately to ensure that the mold can be stably fixed on the positioning table 1, prevent movement during the injection molding process, and ensure the quality of the injection molded product.

[0022] Please see Figure 5A further solution based on this embodiment is as follows: a sealed bearing is provided at the penetration point between the supporting partition 3 and the supporting shaft 14. The outer ring of the sealed bearing is interference-fitted with the supporting partition 3, and the inner ring is interference-fitted with the supporting shaft 14. The sealed bearing at the penetration point between the supporting partition 3 and the supporting shaft 14 is a rolling bearing made of metal outer and inner rings with a rubber sealing ring in the middle, such as a deep groove ball bearing. The outer ring of the sealed bearing is interference-fitted with the supporting partition 3, and the inner ring is interference-fitted with the supporting shaft 14. This fitting method can ensure a tight connection between the sealed bearing and the supporting partition 3 and the supporting shaft 14.

[0023] Working principle: First, place the mold at a suitable position on the top surface of the positioning table 1. Then, the operator rotates the knob 17 located on the outer wall of the positioning table 1 to drive the worm 16 to rotate. Since the worm 16 is meshed with the worm wheel 18 fixed to the outer wall of the support shaft 14, the worm 16 transmits power to the worm wheel 18 through meshing transmission, thereby driving the support shaft 14 to rotate smoothly and steadily under the support of the bearing seat 13. The upper end of the support shaft 14 passes through the support partition 3 and is fixed to the lower surface of the linkage plate 9. When the support shaft 14 rotates, it drives the linkage plate 9 to move. The first connecting column 10 fixed to the upper surface of the linkage plate 9 is connected to the second connecting column 11 fixed to the upper surface of the base 7 through the transmission rod 12. Below the base 7 is the slider 6, which slides on the slide rail 5 distributed in a cross shape on the upper surface of the support partition 3. When the linkage plate 9 moves, it drives the base 7 and slider 6 to move linearly along the slide rail 5 through the connecting column 10, transmission rod 12 and connecting column 2 11. The vertical extension support rod 8 is fixed to the surface of the base 7, and its end is provided with a screw hole. The clamping plate 4 moves with the base 7. The operator can adjust the height position of the clamping plate 4 on the support rod 8 by rotating it according to the clamping requirements of molds of different heights. As the clamping plate 4 moves along the linear slide 2, when it reaches the position that contacts the side wall of the mold, the columnar springs 19 arranged in an array on the clamping surface of the clamping plate 4 are compressed, generating elastic force. This elastic force can buffer the impact force on the mold surface during clamping, reducing damage to the mold surface. On the other hand, it allows the clamping plate 4 to fit more tightly against the side wall of the mold, improving the stability of clamping. The clamping plates 4 corresponding to the slide rails 5 distributed in a cross shape in four directions can move simultaneously or separately to clamp and position the mold from four directions, ensuring that the mold is stably fixed on the positioning table 1, preventing movement during injection molding, and ensuring the quality of the injection molded product. When the injection molding is completed and it is necessary to release the clamping state, simply rotate the knob 17 in the opposite direction. Following the reverse power transmission process described above, the clamping pressure plate 4 moves in the opposite direction along the linear slide 2, disengaging from the mold sidewall, thereby completing the accurate clamping and release operation of the shoe sole injection mold.

[0024] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A positioning device for a shoe sole injection mold, characterized in that: The positioning platform (1) is closed at the bottom and has a cavity inside. At least four linear grooves (2) are opened through the top surface of the positioning platform (1) and communicate with the cavity. A horizontal support plate (3) is fixedly installed inside the cavity, dividing it into an independent upper compartment and a lower compartment. A multi-directional positioning mechanism is installed on the upper surface of the support plate (3). The motion output end of the multi-directional positioning mechanism extends out of the linear groove (2) and is detachably connected to a clamping plate (4) for pressing against the side wall of the mold. The clamping plate (4) is driven by the multi-directional positioning mechanism to make linear displacement along the extension direction of the linear groove (2). The clamping surface of the clamping plate (4) is provided with distributed elastic elements. An operation execution mechanism for driving the multi-directional positioning mechanism is provided in the lower compartment. The operation execution mechanism includes an operation input end that extends to the outer wall of the positioning platform (1). An external force is applied to the operation input end to trigger the multi-directional positioning mechanism to generate directional displacement, thereby driving the clamping plate (4) to perform clamping and positioning or release the clamping state of the mold.

2. The shoe sole injection mold positioning device according to claim 1, characterized in that: The multi-directional positioning mechanism includes a slide rail (5) set on the upper surface of the support partition (3), a slider (6) slidably connected on the slide rail (5), a base (7) fixed to the upper end face of the slider (6), a vertically extending support rod (8) fixed to the surface of the base (7), and a screw hole opened at the end of the support rod (8), and a clamping pressure plate (4) threadedly connected to the screw hole.

3. The shoe sole injection mold positioning device of claim 2, wherein: The multi-directional positioning mechanism also includes a linkage plate (9) connected to the output end of the operating actuator. A connecting column one (10) is fixedly connected to the upper surface of the linkage plate (9), and a connecting column two (11) is fixedly connected to the upper surface of the base (7). A transmission rod (12) is connected to the outer wall of the connecting column one (10) and the connecting column two (11).

4. The shoe sole injection mold positioning device of claim 3, wherein: The operating mechanism includes a bearing seat 1 (13) located at the bottom of the lower compartment. A support shaft (14) is rotatably connected inside the bearing seat 1 (13). The upper end of the support shaft (14) passes through the support partition (3) and the lower end is fixedly connected to the lower surface of the linkage plate (9). A bearing seat 2 (15) is provided on the side wall of the lower compartment. A worm (16) is rotatably connected inside the bearing seat 2 (15). The end of the worm (16) extends to the outside of the positioning table (1) and is provided with a knob (17). A worm wheel (18) is fixedly connected to the outer wall of the support shaft (14). The worm (16) and the worm wheel (18) are meshed together.

5. The shoe sole injection mold positioning device of claim 4, wherein: The distributed elastic element is a columnar spring (19) arranged in an array. One end of the spring (19) is embedded inside the clamping pressure plate (4), and the other end protrudes from the clamping surface to form an elastic contact surface. The compression direction of the spring (19) is parallel to the displacement direction of the clamping pressure plate (4).

6. The shoe sole injection mold positioning device of claim 5, wherein: The slide rails (5) are arranged in a cross shape, and each slider (6) is independently connected to the corresponding clamping plate (4) via the base (7) and the support rod (8).

7. The shoe sole injection mold positioning device of claim 6, wherein: A sealed bearing is provided at the penetration point between the supporting partition (3) and the support shaft (14). The outer ring of the sealed bearing is interference-fitted with the supporting partition (3), and the inner ring is interference-fitted with the support shaft (14).

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