Adjustable self-centering core seat and corresponding bottle mouth centering mechanism and method for bottle making machine

Abstract

The present invention discloses an adjustable self-centering core seat and a corresponding bottle mouth centering mechanism and method for a bottle making machine, wherein the adjustable self-centering core seat comprises a core mounting seat and at least two-stage sliding adjustment assemblies, the sliding adjustment assembly comprises a track and a track block, and the sliding directions of the track blocks in all sliding adjustment assemblies are arranged in a staggered manner; the bottle mouth centering mechanism for a bottle making machine using the adjustable self-centering core seat comprises a core, an adjustable self-centering core seat and a lifting control assembly; the bottle mouth centering method for a bottle making machine using the adjustable self-centering core seat comprises: lifting the core, adjusting the position, inserting the core, and resetting. The present invention can achieve the purpose of dynamically and automatically adjusting the axis between the core and the processed bottle mouth. The present invention is suitable for use when the bottle mouth mold of the bottle making machine is extruded to make the bottle mouth, and is used to statically adjust the core position before making the bottle mouth, and dynamically and self-centeringly adjust the core position during the bottle mouth making process.

Description

Technical Field

[0001] The invention belongs to the technical field of core seats, and relates to a core seat of a bottle making machine, in particular to an adjustable self-centering core seat and a corresponding bottle mouth centering mechanism and method for the bottle making machine. Background Art

[0002] At present, a core is provided on the die-joining line of the left and right half-molds used for extruding the mouth of the semi-finished bottle body on the bottle-making machine, and the bottom end of the core is fixedly mounted on the lifting control assembly used to control the lifting and lowering of the core. When the bottle-making machine makes the mouth of the bottle, the left and right half-molds are opened, and the semi-finished bottle body, which has been heated and softened in the previous process of the bottle-making machine, is moved to the top of the core under the clamping of the chuck, and the lifting control assembly drives the core to rise and extend into the bottle body through the mouth of the bottle, and the left and right half-molds are joined to extrude the mouth of the semi-finished bottle body to complete the mouth forming process. Although this method of directly fixing the core on the lifting control assembly can provide certain support for the internal cavity of the semi-finished bottle body during the process of extruding the mouth of the bottle, and ensure the production quality of the mouth of the bottle, it has the following shortcomings in actual production:

[0003] One is that the center deviation between the core and the bottle body is large. The main reason for the deviation of the core center from the center of the semi-finished bottle body is the low positioning accuracy of the chuck, that is, the chuck that clamps the semi-finished bottle body is not accurately positioned at a position corresponding to the center of the core. In actual production, sometimes even if the chuck accurately positions the bottle body to a predetermined position that is concentric with the core, when the semi-finished bottle body is rotated and heated to soften in the previous process, the centrifugal force generated by the rotation can easily cause the wall thickness of the softened glass semi-finished bottle to be slightly uneven, causing the center of the semi-finished bottle mouth after heating to deviate from the center of the core. However, since the core in the prior art is directly fixed on the lifting control assembly, the position of the core cannot be adjusted according to the position of the bottle body that deviates from the center of the core, resulting in a deviation in the center between the core and the semi-finished bottle body.

[0004] The second is that it is difficult to adjust the concentricity between the core and the bottle body. Although static adjustment of the core position before making the bottle mouth can keep the core and the bottle mouth at a certain concentricity accuracy, the dynamic process of making the bottle mouth will cause deviation between the core and the bottle mouth center, and it is difficult to adjust the concentricity between the core and the bottle body during the dynamic process of making the bottle mouth. Because there are many reasons for the deviation between the core and the bottle body center, the simple adjustment of the core position in a single direction will not meet the actual needs, and the adjustment is difficult.

[0005] The third is to reduce the production quality of the bottle mouth. When the core deviates from the center of the bottle body, after the core is inserted into the softened bottle body through the bottle mouth, the gap between the core and the inner wall of the bottle body is different. When the bottle mouth half mold is used to squeeze the bottle mouth, the inner wall of the bottle body with a larger gap with the core and the inner wall of the bottle body with a smaller gap with the core are subjected to different extrusion forces, resulting in uneven thickness of the bottle body at the bottle mouth after extrusion, affecting the production quality of the product and increasing the unqualified rate of the product. When the center deviation between the core and the bottle body is large, it will seriously affect the smooth rise of the core to the bottle mouth extrusion working position, affecting the production quality of the bottle mouth of the semi-finished bottle. Summary of the invention

[0006] In order to solve the above deficiencies in the prior art, the present invention aims to provide an adjustable self-centering core seat and a corresponding bottle mouth centering mechanism and method for a bottle making machine, so as to achieve the purpose of dynamically and automatically adjusting the axis center between the core and the processed bottle mouth.

[0007] To achieve the above-mentioned purpose, the technical solution adopted by the present invention is as follows: an adjustable self-centering core seat, including a core mounting seat and at least two-stage sliding adjustment assemblies, the sliding adjustment assembly including a track and a track block slidably connected to the track, the track block of the first-stage sliding adjustment assembly is fixedly connected to the core mounting seat, the track in the upper-stage sliding adjustment assembly is fixedly mounted on the track block of the lower-stage sliding adjustment assembly, and the sliding directions of the track blocks in all the sliding adjustment assemblies are staggered.

[0008] As a limitation of the present invention, all sliding adjustment assemblies are arranged in sequence from top to bottom.

[0009] As another limitation of the present invention, the limiting assembly includes fixed blocks located on both sides of the track block for limiting the sliding range of the track block, and the fixed blocks are fixedly connected to the track.

[0010] As a further limitation of the present invention, the limiting assembly further includes a limiting bolt threadedly connected to the fixing block for adjusting the sliding range of the track block.

[0011] As a further limitation of the present invention, a locking screw for locking the positioning position of the limiting bolt is threadedly connected to the fixing block corresponding to the limiting bolt.

[0012] As a further limitation of the present invention, a locking block is movably connected to the fixed block between the locking screw and the limiting bolt, the contact surface between the locking block and the limiting bolt is provided with a thread matching the limiting bolt, and the contact surface between the locking block and the locking screw is a plane.

[0013] As a third limitation of the present invention, the track block is a ball linear guide.

[0014] As another limitation of the present invention, two-stage sliding adjustment assemblies are arranged in sequence from top to bottom below the core mounting seat, and the extension direction of the track in the first-stage sliding adjustment assembly and the extension direction of the track in the second-stage sliding adjustment assembly are arranged in a "cross" shape.

[0015] The present invention also provides a bottle mouth centering mechanism for a bottle making machine using an adjustable self-centering core seat realized by the above-mentioned adjustable self-centering core seat, and its technical scheme is as follows: a bottle mouth centering mechanism for a bottle making machine using an adjustable self-centering core seat, comprising a core with a cone at the top, the adjustable self-centering core seat and a lifting control assembly, the bottom end of the core is fixedly mounted on the core mounting seat, and the track of the last-stage sliding adjustment assembly is fixedly mounted on the power output end of the lifting control assembly.

[0016] The present invention also provides a bottle mouth centering mechanism for a bottle making machine using an adjustable self-centering core seat realized by the above-mentioned adjustable self-centering core seat, and its technical scheme is as follows: A bottle mouth centering method for a bottle making machine using an adjustable self-centering core seat, comprising the following steps:

[0017] S1. Core lifting: The lifting control assembly drives the adjustable self-centering core seat and the core to move upward, forming a core insertion driving force for the core to be inserted into the mouth of the semi-finished bottle;

[0018] S2. Position adjustment: Driven by the core driving force, after the cone of the core contacts the inner wall of the bottle mouth, the inner wall of the bottle mouth generates a guiding force on the core, and the core drives the core mounting seat to slide in the sliding adjustment assembly. After the core is combined with the sliding displacement in the multi-stage sliding adjustment assembly, the core is automatically adjusted to the position corresponding to the center of the bottle mouth;

[0019] S3. Insertion: driven by the insertion driving force, the core moves upward to the bottle mouth extrusion working position;

[0020] S4. Reset: After the bottle mouth is made, the lifting control assembly drives the core to descend and reset.

[0021] The structural setting of the adjustable self-centering core seat changes the connection mode of the core directly fixed on the lifting control assembly, that is, by assembling the adjustable self-centering core seat between the core and the lifting control assembly, the purpose of dynamically and automatically adjusting the axis between the core and the processed bottle mouth is achieved, so that the core and the bottle mouth have a higher concentricity accuracy. This method has the following advantages:

[0022] (1) Improve the concentricity accuracy between the core and the bottle body. When the positioning accuracy of the chuck of the bottle making machine is low, the position of the core of the present invention can be freely adjusted according to the center position of the bottle mouth clamped by the chuck, that is, after the cone of the core contacts the inner wall of the bottle mouth, the inner wall of the bottle mouth generates a guiding force for the core to slide in the sliding adjustment assembly. After the sliding displacement of the core in the multi-stage sliding adjustment assembly is compounded, the core is automatically adjusted to the position corresponding to the center of the bottle mouth.

[0023] (2) It is convenient to adjust the concentricity accuracy between the core and the bottle body. The present invention can ensure that the core and the bottle body have high concentricity accuracy by combining static adjustment of the core position before the bottle mouth and dynamic adjustment of the core position during the bottle mouth process. In addition, the present invention provides a sliding adjustment assembly with staggered sliding directions. During the dynamic adjustment of the core position at the bottle mouth, the core slides in the multi-stage sliding adjustment assembly, and the sliding displacement is compounded, so that the final adjusted core position can meet the adjustment requirements, which is convenient for implementation and control.

[0024] (3) The free sliding range of the core is controllable. The present invention sets a limit assembly, and controls the size of the sliding range of the track block by the extension length of the limit bolt relative to the fixed block. It can not only limit the sliding range of the track block, but also adjust the sliding range of the track block according to the production needs of bottle mouths of different sizes, which can meet the needs of producing bottles of different specifications. In addition, the present invention can further lock the position of the limit bolt by setting a locking screw, so as to prevent the limit bolt from loosening or accidentally hitting during the bottle mouth making process, causing changes in the sliding range of the track block, thereby ensuring the accuracy of the sliding range of the track block. Compared with the method of directly tightening the locking screw against the limit bolt, the present invention can effectively prevent the locking screw from damaging the thread on the limit bolt by setting a locking block, thereby ensuring the service life, usage stability and positioning accuracy of the limit bolt.

[0025] (4) It also has the function of locking the core position. When the positioning accuracy of the chuck of the bottle making machine for clamping the semi-finished bottle body is high, and at the same time, the core in a fixed position can meet the requirement of concentricity accuracy with the bottle mouth, the present invention can lock the core in the position corresponding to the center of the bottle mouth after adjustment in the sliding adjustment assembly through the limit bolt before making the bottle mouth, and has the function of statically adjusting and locking the position of the core before making the bottle mouth, which is convenient for fixing the adjusted position of the core. Combined with the provided limit bolt and locking screw, the core can be stably locked in a fixed position to ensure the concentricity accuracy of the core and the bottle mouth.

[0026] (5) Ensure the production quality of the bottle mouth. The present invention adjusts the position of the core inserted into the bottle mouth through an adjustable self-centering core seat, so that the gap between the core and the inner wall of the bottle body is consistent, ensuring that a uniform extrusion force is generated on the bottle body when the bottle mouth half mold extrude the bottle mouth, effectively ensuring that the bottle body wall thickness at the bottle mouth after extrusion molding is uniform, thereby ensuring product production quality and reducing the generation of unqualified products.

[0027] (6) The present invention has a long service life and a low failure rate.

[0028] The invention is suitable for use when a bottle mouth mold of a bottle making machine extrude a bottle mouth, and is used for statically adjusting the core position before the bottle mouth is made, and dynamically self-centeringly adjusting the core position during the bottle mouth making process. BRIEF DESCRIPTION OF THE DRAWINGS

[0029] The present invention is further described in detail below with reference to the accompanying drawings and specific embodiments.

[0030] Figure 1 It is a schematic diagram of the three-dimensional structure of Example 1 of the present invention;

[0031] Figure 2 It is a schematic diagram of the three-dimensional structure of Example 2 of the present invention;

[0032] Figure 3 This is a schematic diagram of the explosion structure of Example 2 of the present invention;

[0033] Figure 4 for Figure 3 The main view of

[0034] Figure 5 for Figure 3 Right view of;

[0035] Figure 6 This is a schematic diagram of the three-dimensional structure of Example 3 of the present invention;

[0036] Figure 7 It is a cross-sectional view of the fixing block of embodiment 3 of the present invention.

[0037] In the figure: 1. core mounting seat; 21. track; 22. track block; 23. fixing seat; 24. fixing block; 25. limiting bolt; 3. base; 4. locking screw; 5. locking block. DETAILED DESCRIPTION

[0038] The preferred embodiments of the present invention are described below in conjunction with the accompanying drawings. It should be understood that the preferred embodiments described herein are only used to illustrate and understand the present invention, and are not used to limit the present invention.

[0039] Embodiment 1 An adjustable self-centering core seat

[0040] The structural setting of the adjustable self-centering core seat changes the way in which the core position is fixed, and can realize the effect of dynamically and automatically adjusting the axis between the core and the processed bottle mouth, that is, after the tapered portion of the core contacts the inner wall of the bottle mouth, the inner wall of the bottle mouth generates a guiding driving force for the core, and at the same time, the core drives the core mounting seat 1 to slide in the sliding adjustment assembly, and after the core is compounded with the sliding displacement in the multi-stage sliding adjustment assembly, the core is automatically adjusted to a position corresponding to the center of the bottle mouth.

[0041] like Figure 1 As shown, this embodiment includes a core mounting seat 1 for fixing the core, and at least two levels of sliding adjustment assemblies for adjusting the sliding position of the core mounting seat 1 are provided in sequence from top to bottom below the core mounting seat 1, namely, a first-level sliding adjustment assembly, a second-level sliding adjustment assembly, and so on.

[0042] All sliding adjustment assemblies have the same structure, and only the setting of the sliding direction is different. The structure of one level sliding adjustment assembly is taken as an example for explanation. The sliding adjustment assembly includes a track block 22, a track 21, and a fixed seat 23 arranged in sequence from top to bottom. The track block 22 is slidably connected to the track 21. The track block 22 can adopt a linear guide with a ball in the prior art, and the ball is in rolling contact with the track 21. The track 21 extends in a straight direction, and the track 21 is fixed on the fixed seat 23.

[0043] The track block of the first-stage sliding adjustment assembly is fixedly connected to the core mounting seat 1, and the track 21 in the upper-stage sliding adjustment assembly is fixedly mounted on the track block 22 of the lower-stage sliding adjustment assembly, so that when the track block 22 in the lower-stage sliding adjustment assembly slides along its track 21, it drives the upper-stage sliding adjustment assembly as a whole to move together.

[0044] In order to determine the position of the core corresponding to the bottle mouth after compounding the sliding displacement of the multi-stage sliding adjustment assembly, the sliding directions of the track blocks 22 in all the sliding adjustment assemblies are staggered, that is, the extension directions of the linear track blocks 22 in all the sliding adjustment assemblies are intersected, so the extension directions of the tracks 21 corresponding to the track blocks 22 are also staggered. In this embodiment, two-stage sliding adjustment assemblies are arranged in sequence from top to bottom below the core mounting seat 1, and the extension direction of the track 21 in the first-stage sliding adjustment assembly and the extension direction of the track 21 in the second-stage sliding adjustment assembly are arranged in a "cross" shape, that is, the track 21 in the first-stage sliding adjustment assembly and the track 21 in the second-stage sliding adjustment assembly are perpendicular to each other, and the midpoints are concentric. Of course, a four-stage sliding adjustment assembly arranged in sequence from top to bottom can also be used, and the extension directions of the tracks 21 in all the sliding adjustment assemblies are staggered in a "M" shape.

[0045] Example 2 An adjustable self-centering core seat

[0046] In order to ensure the positioning accuracy of the core center and the bottle mouth center and avoid the wear between the track 21 and the track block 22 causing the core adjustment position accuracy to decrease, this embodiment further optimizes the embodiment 1 and adds a limiter component for limiting the sliding range of the track block 22 on the basis of the embodiment 1 to improve the accuracy of the core free center adjustment. The specific structure is as follows:

[0047] like Figures 2 to 5 As shown, each set of sliding adjustment assembly is provided with a limit assembly, and the limit assembly includes a fixed block 24 and a limit bolt 25. The fixed blocks 24 are fixedly installed on both sides of the fixed seat 23, that is, the fixed block 24 is fixedly connected to the track 21 through the fixed seat 23, and the two fixed blocks 24 are located on both sides of the track block 22, and the track block 22 is located between the two fixed blocks 24, which are used to limit the sliding range of the track block 22, so that the track block 22 can only slide between the two fixed blocks 24. In order to facilitate the adjustment of the sliding range of the track block 22, each fixed block 24 is threadedly connected with a limit bolt 25, the axis of the limit bolt 25 is consistent with the sliding direction of the track block 22, and the end of the limit bolt 25 is adapted to the sliding position of the track block 22. By controlling the distance that the limit bolt 25 extends outward relative to the fixed block 24, the sliding range of the track block 22 between the limit bolts 25 on both sides can be adjusted and limited. At the same time, the track block 22 can also be locked between the limit bolts 25 on both sides to fix the final sliding adjustment position of the core.

[0048] The relationship between the first-stage sliding adjustment assembly and the core mounting seat 1 is as follows: the track block 22 of the first-stage sliding adjustment assembly is fixedly connected to the bottom end of the core mounting seat 1, the end of the limit bolt 25 in the first-stage sliding adjustment assembly corresponds to the side of the core mounting seat 1, and the core mounting seat 1 is located between the ends of the two limit bolts 25 in the first-stage sliding adjustment assembly. The ends of the two limit bolts 25 in the first-stage sliding adjustment assembly can contact the side of the mounting seat 1 at the sliding limit position to limit the sliding range of the core mounting seat 1, thereby limiting the sliding range of the track block 22 in the first-stage sliding adjustment assembly below the core mounting seat 1. When the ends of the two limit bolts 25 in the first-stage sliding adjustment assembly are both pressed against the side of the mounting seat 1, that is, the mounting seat 1 is clamped and fixed between the two limit bolts 25 in the first-stage sliding adjustment assembly, the position of the mounting seat 1 is in a locked state.

[0049] The relationship between the multi-stage sliding adjustment assemblies is as follows: the track 21 in the upper-stage sliding adjustment assembly is fixedly mounted on the track block 22 of the lower-stage sliding adjustment assembly through the fixed seat 23 of the stage, so that when the track block 22 in the lower-stage sliding adjustment assembly slides along its track 21, it drives the upper-stage sliding adjustment assembly as a whole to move together. And the fixed seat 23 in the upper-stage sliding adjustment assembly is located between the ends of the two limit bolts 25 in the lower-stage sliding adjustment assembly. After the upper-stage sliding adjustment assembly slides to the limit position along the track 21 in the lower-stage sliding assembly, the ends of the two limit bolts 25 in the lower-stage sliding adjustment assembly can contact the side of the fixed seat 23 of the upper-stage sliding adjustment assembly, so as to limit the sliding range of the fixed seat 23 in the upper-stage sliding adjustment assembly, thereby limiting the sliding range of the track block 22 in the lower-stage sliding adjustment assembly connected thereto. When the ends of the two limit bolts 25 in the next-level sliding adjustment assembly are both pressed against the fixing seat 23 in the previous-level sliding adjustment assembly, that is, the fixing seat 23 in the previous-level sliding adjustment assembly is clamped and fixed between the two limit bolts 25 in the next-level sliding adjustment assembly, the position of the previous-level sliding adjustment assembly is in a locked state.

[0050] The track 21 in the last stage of the sliding adjustment assembly is mounted on the base 3 via the fixing seat 23 of this stage.

[0051] Example 3 An adjustable self-centering core seat

[0052] In order to prevent the limit bolt 25 in Example 2 from loosening or being accidentally hit during the bottle mouth making process, thereby causing changes in the sliding range of the track block 22, and to ensure the accuracy of the sliding range of the track block 22, this embodiment is a further optimization of Example 2. On the basis of Example 2, this embodiment adds a locking screw 4 and a locking block 5 for locking the positioning position of the limit bolt 25.

[0053] like Figure 6 to Figure 7 As shown, each set of limiting components also includes a locking screw 4 and a locking block 5. The locking screw 4 is threadedly connected to the fixing block 24 and is arranged corresponding to the position of the limiting bolt 25, that is, the axis of the locking screw 4 is arranged perpendicular to the axis of the limiting bolt 25.

[0054] In order to prevent the locking screw 4 from directly pressing against the limiting bolt 25 and damaging the thread on the limiting bolt 25, thereby reducing the service life, stability of use and positioning accuracy of the limiting bolt 25, a locking block 5 is movably connected to the fixing block 24 between the locking screw 4 and the limiting bolt 25. The locking block 5 is movably arranged in the corresponding through hole on the fixing block 24, and the through hole where the locking block 5 is located is placed between the threaded hole of the limiting bolt 25 and the threaded hole where the locking screw 4 is located, and the three are arranged through. The locking block 5 can slide along the axial direction of the locking screw 4 in its through hole. The contact surface between the locking block 5 and the limiting bolt 25 is an arc surface, and a thread matching the limiting bolt 25 is provided on the arc surface; the contact surface between the locking block 5 and the locking screw 4 is a plane, and the threaded end of the locking screw 4 can press against the plane of the locking block 5.

[0055] Example 4 A bottle mouth centering mechanism for a bottle making machine using an adjustable self-centering core seat

[0056] This embodiment changes the connection method of the core being directly fixed on the lifting control assembly by adopting the adjustable self-centering core seat in Example 3, that is, by assembling the adjustable self-centering core seat between the core and the lifting control assembly, dynamic automatic centering between the core and the processed bottle mouth is achieved, so that the core and the bottle mouth have higher concentricity accuracy.

[0057] This embodiment includes a core, an adjustable self-centering core seat in Embodiment 3, and a lifting control assembly. The top of the core is a tapered point, the bottom of the core is fixedly mounted above the core mounting seat 1 of the adjustable self-centering core seat, and the track 21 of the last level sliding adjustment assembly in the adjustable self-centering core seat is fixedly mounted on the power output end of the lifting control assembly through the base 3 of the sliding adjustment assembly. The lifting control assembly is a linear drive in the prior art that can control the core to move up and down, such as a linear cylinder.

[0058] The method of using this embodiment is shown in Examples 5 to 7.

[0059] Example 5 A method for centering the bottle mouth of a bottle making machine using an adjustable self-centering core seat

[0060] This embodiment is realized by using the bottle mouth centering mechanism of the bottle making machine applied to the adjustable self-centering core seat in the fourth embodiment. Under the control of the bottle making machine controller, when the positioning accuracy of the chuck of the bottle making machine clamping the bottle body is low, in order to make the core insertion position of the core adapt to the center position of the bottle mouth of the bottle body clamped by the chuck, this embodiment adjusts the position of the core in the dynamic process of the bottle mouth, which specifically includes the following steps:

[0061] S1. Core lifting: The lifting control assembly drives the adjustable self-centering core seat and the core to move upward, forming a core insertion driving force for inserting the core into the mouth of the semi-finished bottle.

[0062] S2. Position adjustment: driven by the core driving force, after the cone of the core contacts the inner wall of the bottle mouth, the inner wall of the bottle mouth generates a guiding driving force for the core, and the core drives the core mounting seat 1 to slide in the sliding adjustment assembly. After the core combines the sliding displacement in the multi-stage sliding adjustment assembly, the core is automatically adjusted to the position corresponding to the center of the bottle mouth, that is, the core and the bottle mouth are coaxial.

[0063] S3. Inserting the core: driven by the driving force of the inserting core, the core moves upward to a certain height, so that the core moves to the bottle mouth extrusion working position corresponding to the bottle mouth mold extruding the bottle body.

[0064] S4. Reset: After the left and right half molds of the bottle mouth are closed to complete the extrusion of the bottle mouth, the left and right half molds of the bottle mouth are opened, and the lifting control assembly drives the core to descend and reset.

[0065] Example 6 A bottle mouth centering method for a bottle making machine using an adjustable self-centering core seat

[0066] This embodiment is a further optimization of the embodiment 5. On the basis of the step of dynamically adjusting the core center during the bottle mouth making process in the embodiment 5, a step of controlling the sliding range of the core before the bottle mouth making is added, which specifically includes the following steps:

[0067] A. Manually slide the core in the multi-stage sliding adjustment assembly to a position close to the center of the bottle mouth.

[0068] B. Adjust the sliding range of the track block 22 in each level of the sliding adjustment assembly: loosen the locking screw 4 to move the locking screw 4 relatively away from the side of the limit bolt 25, so that the locking block 5 has space to move toward the side of the locking screw 4, so that after rotating the limit bolt 25, the limit bolt 25 can move along the thread on the arc surface of the locking block 5, control the protruding length of the limit bolt 25 relative to the fixed block 24, adjust the distance between the two limit bolts 25 in each level of the sliding adjustment assembly, and finally realize the adjustment of the sliding range of the track block 22.

[0069] C. Locking the positioning position of the limit bolt 25: Rotate the locking screw 4 in each level of the sliding adjustment assembly to move the locking screw 4 relatively close to the side of the limit bolt 25, the threaded end of the locking screw 4 is pressed against the plane of the locking block 5, and the arc surface of the locking block 5 is clamped on the limit bolt 25, thereby limiting the rotation of the limit bolt 25 and locking the position of the limit bolt 25.

[0070] Example 7 A method for centering the bottle mouth of a bottle making machine using an adjustable self-centering core seat

[0071] This embodiment is realized by using the bottle mouth centering mechanism of the bottle making machine applied with the adjustable self-centering core seat in Embodiment 4. Under the control of the bottle making machine controller, when the positioning accuracy of the chuck of the bottle making machine clamping the bottle body is high, and the core in the fixed position can meet the requirement of concentricity accuracy with the bottle mouth, the core position can be statically adjusted and fixed in front of the bottle mouth. Specifically:

[0072] Before the bottle mouth mold is extruded to form the bottle mouth, the locking screw 4 in the sliding adjustment assembly is loosened, and the core is manually slidably adjusted in the multi-stage sliding adjustment assembly. When the core is adjusted to a position corresponding to the center of the bottle mouth, the position of the core mounting seat 1 and each stage of the sliding adjustment assembly is locked by the corresponding limit bolts 25, and then the locking screw 4 is used to lock the positioning position of the limit bolts 25. After locking the core position, the following steps are cyclically performed to realize the core insertion operation during the bottle mouth operation, which specifically includes the following steps:

[0073] S1. Core lifting: The lifting control assembly drives the adjustable self-centering core seat and the core to move upward, forming a core insertion driving force for inserting the core into the mouth of the semi-finished bottle.

[0074] S2. Inserting the core: driven by the driving force of the inserting core, the core moves upward to a certain height, so that the core moves to the bottle mouth extrusion working position corresponding to the bottle mouth mold extruding the bottle body.

[0075] S3. Reset: After the left and right half molds of the bottle mouth are closed to complete the extrusion of the bottle mouth, the left and right half molds of the bottle mouth are opened, and the lifting control assembly drives the core to descend and reset.

[0076] It should be noted that the above is only a preferred embodiment of the present invention and is not intended to limit the present invention. Although the present invention is described in detail with reference to the above embodiments, those skilled in the art can still modify the technical solutions described in the above embodiments or replace some of the technical features therein by equivalents. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present invention shall be included in the protection scope of the present invention.

Claims

1. An adjustable self-centering core seat, characterized in that: It comprises a core mounting seat and at least two levels of sliding adjustment assemblies, the sliding adjustment assembly comprises a track and a track block slidably connected to the track, the track block of the first level sliding adjustment assembly is fixedly connected to the core mounting seat, the track in the upper level sliding adjustment assembly is fixedly mounted on the track block of the lower level sliding adjustment assembly, and the sliding directions of the track blocks in all the sliding adjustment assemblies are staggered; All sliding adjustment assemblies are set sequentially from top to bottom; The sliding adjustment assembly also includes a limit assembly, which includes fixed blocks located on both sides of the track block for limiting the sliding range of the track block, and the fixed blocks are fixedly connected to the track; The limit assembly also includes a limit bolt threadedly connected to the fixed block for adjusting the sliding range of the track block, a locking screw threadedly connected to the fixed block corresponding to the limit bolt for locking the positioning position of the limit bolt, a locking block movably connected to the fixed block between the locking screw and the limit bolt, the contact surface between the locking block and the limit bolt is provided with a thread matching the limit bolt, and the contact surface between the locking block and the locking screw is a plane.

2. The adjustable self-centering core seat according to claim 1, characterized in that: The track block is a ball linear guide.

3. The adjustable self-centering core seat according to claim 1, characterized in that: Two-stage sliding adjustment assemblies are arranged in sequence from top to bottom below the core mounting seat, and the extension direction of the track in the first-stage sliding adjustment assembly and the extension direction of the track in the second-stage sliding adjustment assembly are arranged in a "cross" shape.

4. A bottle mouth centering mechanism for a bottle making machine using an adjustable self-centering core seat, characterized in that: It comprises a core with a cone at the top, an adjustable self-centering core seat as described in any one of claims 1 to 3, and a lifting control assembly, wherein the bottom end of the core is fixed on the core mounting seat, and the track of the last-stage sliding adjustment assembly is fixed on the power output end of the lifting control assembly.

5. A method for centering the bottle mouth of a bottle making machine using an adjustable self-centering core seat, characterized in that: The method is realized by using the bottle mouth centering mechanism of the bottle making machine applied with the adjustable self-centering core seat as described in claim 4, and comprises the following steps: S1. Core lifting: The lifting control assembly drives the adjustable self-centering core seat and the core to move upward, forming a core insertion driving force for the core to be inserted into the mouth of the semi-finished bottle; S2. Position adjustment: Driven by the core driving force, after the cone of the core contacts the inner wall of the bottle mouth, the inner wall of the bottle mouth generates a guiding force on the core, and the core drives the core mounting seat to slide in the sliding adjustment assembly. After the core is combined with the sliding displacement in the multi-stage sliding adjustment assembly, the core is automatically adjusted to the position corresponding to the center of the bottle mouth; S3. Insertion: driven by the insertion driving force, the core moves upward to the bottle mouth extrusion working position; S4. Reset: After the bottle mouth is made, the lifting control assembly drives the core to descend and reset.

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