Guide rail structure for bottle blow molding machine

Abstract

A guide rail structure for a bottle blow molding machine. The guide rail structure for a bottle blow molding machine comprises a mold-locking bearing (1), a support (2), an upper guide rail (3), a lower guide rail (4) and an elastic member (5), wherein the mold-locking bearing (1) is configured to connect to a mold; the upper guide rail (3) is fixedly connected to the support (2); the lower guide rail (4) is spaced apart from the upper guide rail (3), a first end of the lower guide rail (4) is rotationally connected to the support (2), and a second end of the lower guide rail (4) is slidably connected to the support (2); the mold-locking bearing (1) is slidably arranged between the upper guide rail (3) and the lower guide rail (4), and the mold-locking bearing (1) can abut against the upper guide rail (3) and the lower guide rail (4); and two ends of the elastic member (5) are respectively connected to the support (2) and the second end of the lower guide rail (4), and the elastic member (5) can adjust the distance between the upper guide rail (3) and the lower guide rail (4).

Description

Blow molding machine guide rail structure

[0001] This application claims priority to Chinese Patent Application No. 202411182972.7, filed with the Chinese Patent Office on August 27, 2024, the entire contents of which are incorporated herein by reference. Technical Field

[0002] This application relates to the field of blow molding technology, for example to a blow molding machine guide rail structure. Background Technology

[0003] The linkage between mold opening and closing and mold frame unlocking is a crucial aspect of the blow molding machine's guide rail structure during the blow molding process. During operation, the mold must be closed and locked by the mold frame before pressure can be applied for blow molding. Once the mold has finished blowing the bottle, the mold frame needs to unlock so the mold can be opened and the bottle removed. The mold frame unlocking is achieved by the downward movement of the bearing controlled by the curved guide rail. Both the upper and lower guide rails are fixed, with the upper position of the locking bearing being the highest point. When the bearing moves downward, it drives the locking shaft downward, unlocking the mold frame and allowing it to open.

[0004] During actual operation, the mold frame locking and closing process is affected by various unstable factors, which may cause the height of the locking arm bearing to be unstable, or human error may cause the locking arm to be not at the normal height before entering the unlocking guide rail. When the equipment starts or runs at high speed, it will collide with the upper and lower guide rails, causing bearing damage and affecting production. Summary of the Invention

[0005] This application proposes a guide rail structure for a blow molding machine, which can prevent excessive collision between the mold clamping bearing and the guide rail, avoid damage to the mold clamping bearing, and improve the service life of the mold clamping bearing.

[0006] This application discloses a blow molding machine guide rail structure, including a mold-locking bearing and a mold. The mold-locking bearing is connected to the mold. The blow molding machine guide rail structure further includes a bracket, an upper guide rail, a lower guide rail, and an elastic element. The upper guide rail is fixedly connected to the bracket. The lower guide rail is spaced apart from the upper guide rail. The first end of the lower guide rail is rotatably connected to the bracket, and the second end of the lower guide rail is slidably connected to the bracket. The mold-locking bearing is slidably disposed between the upper guide rail and the lower guide rail, and the mold-locking bearing can abut against the upper guide rail and the lower guide rail. The two ends of the elastic element are respectively connected to the bracket and the second end of the lower guide rail, so that the upper guide rail and the lower guide rail can move closer to or further away from each other.

[0007] In some embodiments, the blow molding machine guide rail structure further includes a first mounting rod and a second mounting rod, the first mounting rod being mounted on the bracket, the second mounting rod being mounted on the second end of the lower guide rail, and the two ends of the elastic member being connected to the first mounting rod and the second mounting rod, respectively.

[0008] In some embodiments, the elastic element is a tension spring.

[0009] In some embodiments, the blow molding machine guide rail structure further includes a slider, which is slidably connected to the bracket and fixed to the lower guide rail.

[0010] In some embodiments, the slider is provided with a groove, a portion of the bracket is disposed within the groove, and a portion of the bracket is movable relative to the groove.

[0011] In some embodiments, the blow molding machine guide rail structure further includes a connector, the two ends of which are respectively connected to the lower guide rail and the slider.

[0012] In some embodiments, the blow molding machine guide rail structure further includes a rotating shaft, the first end of which is fixed to the first end of the lower guide rail, and the second end of which passes through the bracket and is rotatably connected to the bracket.

[0013] In some embodiments, the blow molding machine guide rail structure further includes a bearing, the rotating shaft is fixedly connected to the inner ring of the bearing, and the bracket is fixedly connected to the outer ring of the bearing.

[0014] In some embodiments, the second end of the lower guide rail is provided with a guide surface, and the distance between the guide surface and the bottom surface of the upper guide rail gradually decreases along the unlocking direction of the mold-locking bearing.

[0015] In some embodiments, the opening formed by the second ends of the upper guide rail and the lower guide rail is funnel-shaped. Attached Figure Description

[0016] Figure 1 is a schematic diagram of the guide rail structure of the blow molding machine provided in an embodiment of this application;

[0017] Figure 2 is an exploded view of the blow molding machine guide rail structure provided in an embodiment of this application;

[0018] Figure 3 is a schematic diagram of the guide rail structure of the blow molding machine during the working process provided in the embodiment of this application;

[0019] Figure 4 is a schematic diagram of the guide rail structure of the blow molding machine during the working process provided in the embodiment of this application;

[0020] Figure 5 is a schematic diagram of the guide rail structure of the blow molding machine during the working process provided in the embodiment of this application.

[0021] In the diagram: 1. Mold-locking bearing; 2. Bracket; 3. Upper guide rail; 4. Lower guide rail; 41. Guide surface; 5. Elastic element; 6. First mounting rod; 7. Second mounting rod; 8. Slider; 81. Slide groove; 9. Connector; 10. Rotating shaft; 11. Bearing; 12. Mounting seat. Detailed Implementation

[0022] The present application will now be described in detail with reference to the accompanying drawings and embodiments, the specific embodiments described herein serving to explain the present application. For ease of description, only the parts relevant to the present application are shown in the drawings, not the entire structure.

[0023] In the description of this application, unless otherwise expressly specified and limited, the terms "connected," "linked," and "fixed" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components. Those skilled in the art can understand the meaning of the above terms in this application according to the specific circumstances.

[0024] In this application, unless otherwise expressly specified and limited, "above" or "below" the second feature can include direct contact between the first and second features, or contact between the first and second features through another feature between them. Furthermore, "above," "over," and "on top" of the second feature includes the first feature being directly above or diagonally above the second feature, or simply indicates that the first feature is at a higher horizontal level than the second feature. "Below," "below," and "under" the second feature includes the first feature being directly below or diagonally below the second feature, or simply indicates that the first feature is at a lower horizontal level than the second feature.

[0025] In the description of this embodiment, the terms "upper," "lower," "left," and "right," etc., refer to the orientation or positional relationship shown in the accompanying drawings. These terms are used for ease of description and simplification of operation, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Furthermore, the terms "first" and "second" are used for distinction in description and have no special meaning.

[0026] As shown in Figures 1 to 3, this application provides a blow molding machine guide rail structure. The blow molding machine guide rail structure includes a mold clamping bearing 1 and a mold, with the mold clamping bearing 1 connected to the mold. The blow molding machine guide rail structure also includes a bracket 2, an upper guide rail 3, a lower guide rail 4, and an elastic element 5.

[0027] In some embodiments, the upper guide rail 3 is fixedly connected to the bracket 2, and the lower guide rail 4 is spaced apart from the upper guide rail 3. The first end of the lower guide rail 4 is rotatably connected to the bracket 2, and the second end of the lower guide rail 4 is slidably connected to the bracket 2. The mold-locking bearing 1 is slidably disposed between the upper guide rail 3 and the lower guide rail 4, and the mold-locking bearing 1 can abut against the upper guide rail 3 and the lower guide rail 4. The two ends of the elastic member 5 are respectively connected to the bracket 2 and the second end of the lower guide rail 4, and can adjust the distance between the upper guide rail 3 and the lower guide rail 4. By sliding the second end of the lower guide rail 4 to the bracket 2, when the mold-locking bearing 1 collides with the lower guide rail 4, the lower guide rail 4 moves downward, which can reduce the impact force between the mold-locking bearing 1 and the lower guide rail 4 and prevent damage to the mold-locking bearing 1 or the lower guide rail 4; the elastic member 5 plays a buffering role and can reset the lower guide rail 4.

[0028] Optionally, a guide surface 41 is provided at the second end of the lower guide rail 4, and the distance between the guide surface 41 and the bottom surface of the upper guide rail 3 gradually decreases along the unlocking direction of the mold-locking bearing 1. In some embodiments, in order to reduce damage to the equipment caused by abnormal operation or human error, the bottom surface of the upper guide rail 3 and the top surface of the lower guide rail 4 are set as non-equidistant curved surfaces, and the initial contact force position of the lower guide rail 4 is found based on finite element analysis and actual conditions. An inlet guide surface 41 is designed before the initial contact force position. Optionally, the height of the guide surface 41 gradually increases, which can guide the mold-locking bearing 1 to reach the initial contact force position of the lower guide rail 4 and abut. After the initial contact force position, the mold-locking bearing 1 continues to decrease, and the height of the mold-opening curved surface continues to decrease. The guide surface 41 and the mold-opening curved surface are divided by the initial contact force position. Optionally, the bottom surface of the upper guide rail 3 corresponding to the guide surface 41 is a flat surface, and the bottom surface of the upper guide rail 3 corresponding to the mold opening surface is a curved surface, and the distance between the mold opening surface and the bottom surface of the upper guide rail 3 is consistent along the unlocking direction of the mold locking bearing 1.

[0029] In some embodiments, the bottom surface of the upper guide rail 3 and the top surface of the lower guide rail 4 are set as non-equidistant curved surfaces. The lower guide rail 4 serves as a protective guide rail, and its non-equidistant end point is obtained through force analysis. This setting does not affect the normal operation of the equipment and can also reduce the damage to the equipment caused by abnormal operation or human error.

[0030] Optionally, the opening formed by the second ends of the upper guide rail 3 and the lower guide rail 4 is funnel-shaped, which allows the mold-locking bearing 1 to smoothly enter the gap between the lower guide rail 4 and the upper guide rail 3 and move along the bottom surface of the upper guide rail 3 or the top surface of the lower guide rail 4.

[0031] Optionally, the blow molding machine guide rail structure further includes a first mounting rod 6 and a second mounting rod 7. The first mounting rod 6 is mounted on the bracket 2, and the second mounting rod 7 is mounted on the second end of the lower guide rail 4. The two ends of the elastic element 5 are respectively connected to the first mounting rod 6 and the second mounting rod 7, which can improve the stability of the elastic element 5. For example, the elastic element 5 is a tension spring, and the two ends of the tension spring are hooked to the first mounting rod 6 and the second mounting rod 7, respectively.

[0032] Optionally, the blow molding machine guide rail structure also includes a mounting base 12, which is Z-shaped and connected to the bracket 2. The first mounting rod 6 is mounted on the mounting base 12, which can make the first mounting rod 6 installed stably and avoid the interference of the bracket 2 on the elastic element 5.

[0033] Optionally, the blow molding machine guide rail structure also includes a slider 8, which is slidably connected to the bracket 2 and fixed to the lower guide rail 4. The slider 8 can slide along the bracket 2, thereby driving the lower guide rail 4 to move, and thus adjusting the distance between the upper guide rail 3 and the lower guide rail 4.

[0034] In some embodiments, the slider 8 is provided with a groove 81, and a portion of the support 2 is disposed within the groove 81, allowing the portion of the support 2 to move relative to the groove 81. Exemplarily, the portion of the support 2 is embedded within the groove 81, improving the stability of the connection between the slider 8 and the support 2, enabling the slider 8 to move along the support 2, and providing a guiding function for the slider 8.

[0035] In some embodiments, a limiting component may be provided in the height direction of the bracket 2 to prevent the elastic element 5 from pulling the lower guide rail 4 excessively upward.

[0036] Optionally, the blow molding machine guide rail structure also includes a connector 9, the two ends of which are connected to the lower guide rail 4 and the slider 8 respectively, which can improve the stability of the connection between the lower guide rail 4 and the slider 8.

[0037] Optionally, the blow molding machine guide rail structure also includes a rotating shaft 10. The first end of the rotating shaft 10 is fixed to the first end of the lower guide rail 4, and the second end of the rotating shaft 10 passes through the bracket 2 and is rotatably connected to the bracket 2. For example, the first end of the lower guide rail 4 is a mold-opening curved surface, and the distance between the bottom surface of the upper guide rail 3 and the top surface of the lower guide rail 4 remains constant. The second end of the lower guide rail 4 can move in the vertical direction. In order to ensure that the height of the first end of the lower guide rail 4 remains constant, the height of the second end of the lower guide rail 4 can be variable. The blow molding machine guide rail structure is provided with a rotating shaft 10. The first end of the rotating shaft 10 is fixedly connected to the first end of the lower guide rail 4, and the second end of the rotating shaft 10 passes through the bracket 2 and is rotatably connected to the bracket 2.

[0038] In some embodiments, in order to improve the smoothness of rotation between the rotating shaft 10 and the bracket 2, the blow molding machine guide rail structure further includes a bearing 11, with the rotating shaft 10 fixedly connected to the inner ring of the bearing 11 and the bracket 2 fixedly connected to the outer ring of the bearing 11, which can reduce the friction between the rotating shaft 10 and the bracket 2.

[0039] This application provides a blow molding machine guide rail structure that effectively protects the mold clamping bearing 1 and the lower guide rail 4, preventing damage to them and improving their service life. Based on the different impact points of the mold clamping bearing 1 at different heights, the usage process of this blow molding machine guide rail structure is as follows:

[0040] When the mold clamping bearing 1 is slightly lower, as shown in Figure 3, the mold clamping bearing 1 contacts the upper guide rail 3 first, and then contacts the lower guide rail 4. At this time, the lower guide rail 4 is designed with a non-equidistant curve. When it contacts the lower guide rail 4, the pressure angle is small, the impact is small, and the damage is reduced. When the position of the mold clamping bearing 1 deviates downwards significantly, as shown in Figure 4, the mold clamping bearing 1 contacts the lower guide rail 4 first. If the force is too large, the lower guide rail 4 can swing downwards to reduce the impact and play a protective role. If the force is not large, it will contact the upper guide rail 3 first, and then contact the lower guide rail 4. When the mold clamping bearing 1 is in the lowest position and is in a jammed state, as shown in Figure 5, the mold clamping bearing 1 can only run along the lower guide rail 4 and drive the mold to swing downwards.

Claims

1. A guide rail structure for a blow molding machine, comprising a mold clamping bearing (1), a bracket (2), an upper guide rail (3), a lower guide rail (4), and an elastic element (5), wherein the mold clamping bearing (1) is connected to the mold, the upper guide rail (3) is fixedly connected to the bracket (2), the lower guide rail (4) is spaced apart from the upper guide rail (3), the first end of the lower guide rail (4) is rotatably connected to the bracket (2), the second end of the lower guide rail (4) is slidably connected to the bracket (2), the mold clamping bearing (1) is slidably disposed between the upper guide rail (3) and the lower guide rail (4), and the mold clamping bearing (1) is capable of abutting against the upper guide rail (3) and the lower guide rail (4), and the two ends of the elastic element (5) are respectively connected to the bracket (2) and the second end of the lower guide rail (4) so ​​that the upper guide rail (3) and the lower guide rail (4) can move closer to or further away from each other.

2. The blow molding machine guide rail structure according to claim 1 further includes a first mounting rod (6) and a second mounting rod (7), wherein the first mounting rod (6) is mounted on the bracket (2), the second mounting rod (7) is mounted on the second end of the lower guide rail (4), and the two ends of the elastic member (5) are respectively connected to the first mounting rod (6) and the second mounting rod (7).

3. The guide rail structure for a blow molding machine according to claim 2, wherein, The elastic element (5) is a tension spring.

4. The blow molding machine guide rail structure according to claim 1 further includes a slider (8), the slider (8) being slidably connected to the bracket (2), and the slider (8) being fixed to the lower guide rail (4).

5. The guide rail structure for a blow molding machine according to claim 4, wherein, The slider (8) is provided with a groove (81), and part of the bracket (2) is disposed in the groove (81), and part of the bracket (2) is movable relative to the groove (81).

6. The blow molding machine guide rail structure according to claim 4 further includes a connector (9), the two ends of which are respectively connected to the lower guide rail (4) and the slider (8).

7. The blow molding machine guide rail structure according to claim 1 further includes a rotating shaft (10), the first end of the rotating shaft (10) is fixed to the first end of the lower guide rail (4), and the second end of the rotating shaft (10) passes through the bracket (2) and is rotatably connected to the bracket (2).

8. The blow molding machine guide rail structure according to claim 7 further includes a bearing (11), the rotating shaft (10) is fixedly connected to the inner ring of the bearing (11), and the bracket (2) is fixedly connected to the outer ring of the bearing (11).

9. A blow molding machine guide rail structure according to any one of claims 1-8, wherein, The second end of the lower guide rail (4) is provided with a guide surface (41), and the distance between the guide surface (41) and the bottom surface of the upper guide rail (3) gradually decreases along the unlocking direction of the locking bearing (1).

10. A blow molding machine guide rail structure according to any one of claims 1-8, wherein, The opening formed by the second ends of the upper guide rail (3) and the lower guide rail (4) is trumpet-shaped.

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