Bottle preform positioning structure

Abstract

The utility model discloses a bottle preform positioning structure, which is movably arranged on a conveying device of a bottle blowing machine, is used for positioning a bottle preform and comprises a base and a positioning part. The base is movably arranged on the conveying device; the positioning part is arranged on the base and is concavely provided with a positioning groove, the positioning groove is provided with an internal thread, an opening of the positioning groove is provided with a thread entering part, and the thread entering part is used for enabling a starting point of an external thread of a bottle preform to enter, so that the internal thread and the external thread are mutually screwed, and the bottle preform is positioned at a fixed position.

Description

Technical Field

[0001] The utility model relates to a component of a blow molding machine, in particular to a bottle embryo positioning structure. Background Art

[0002] Generally, bottle blowing machines on the market use a positioning piece to fix the preform and use a conveyor belt to transport the preform to various parts of the bottle blowing machine according to the processing sequence. This positioning piece can prevent the preform from falling off during the transportation process.

[0003] However, when the preform is fixed to the positioning member, the relative positions of the positioning member and the preform are usually not fixed, so that the preform is prone to processing errors due to positioning errors during subsequent processing, thereby increasing the product defect rate. Utility Model Content

[0004] In order to solve the above problems, the present invention provides a preform positioning structure, which can fix the relative position of the preform and the positioning part, solve the positioning error problem, and achieve the purpose of improving product yield.

[0005] To achieve the above objectives, the present invention is implemented through the following technical solutions: a preform positioning structure is movably mounted on a conveying device of a bottle blowing machine and is used to position a preform. The preform positioning structure includes: a base movably mounted on the conveying device; and a positioning portion provided on the base, the positioning portion having a positioning groove recessed therein, the positioning groove having an internal thread, and the opening of the positioning groove having a thread entry portion. The thread entry portion is used to allow the starting point of an external thread of the preform to enter, so that the internal thread and the external thread screw together, thereby positioning the preform in a fixed position.

[0006] Preferably, the internal thread is provided with an inclined guide section at the inner edge of the opening of the positioning groove, and the guide section extends to the entry point of the thread.

[0007] Preferably, the base and the positioning portion are cylindrical.

[0008] Preferably, the base has a first radius size, the positioning portion has a second radius size, and the second radius size is smaller than the first radius size.

[0009] Preferably, a through hole is provided on the bottom surface of the positioning portion, and the through hole passes through and connects to the base.

[0010] Preferably, the through hole has a third radius size, and the third radius size is smaller than the second radius size.

[0011] Preferably, it further comprises a coupling portion, which is recessed between the base and the positioning portion, and is connected to the conveying device.

[0012] Preferably, the connecting portion has a fourth radius dimension, and the fourth radius dimension is smaller than the second radius dimension.

[0013] Preferably, a bump is provided on both sides of the outer edge of the bottle preform. When the bottle preform is in the fixed position, the included angle between the bump and the entry point of the thread is 90 degrees. Beneficial effects

[0014] The present invention can fix the relative position of the preform and the positioning portion, solving the problem of positioning error and achieving the purpose of improving product yield. Furthermore, with the help of the guide section, it can reduce the skew of the preform and further improve the fit between the preform and the positioning portion. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 This is a schematic diagram of the three-dimensional appearance of the preform positioning structure of the utility model;

[0016] Figure 2 This is a schematic diagram of the preform positioning structure of the present invention from a top view;

[0017] Figure 3 This is a schematic diagram of the preform positioning structure of the present invention from a front side perspective;

[0018] Figure 4 This is a schematic diagram of the implementation state of the bottle preform positioning structure of the present invention, used to show that the bottle preform is fixed in the positioning part;

[0019] Figure 5 For the utility model Figure 4 The cross-sectional diagram taken along the AA section line is used to show that the external thread of the bottle preform and the internal thread of the positioning groove are consistent with each other;

[0020] Figure 6 This is a schematic diagram of the implementation state of the bottle preform positioning structure of the present invention, used to illustrate the position of the bottle preform from the starting point of the external thread to the point where the thread enters;

[0021] Figure 7 This is a schematic diagram of the implementation state of the bottle preform positioning structure of the present invention, used to show that the bottle preform is in a fixed position;

[0022] Figure 8 This is a schematic diagram of the implementation state of the preform positioning structure of the present invention, used to illustrate the position of the present invention in a bottle blowing machine.

[0023] In the figure: 100: preform positioning structure; 200: bottle blowing machine; 210: conveying device; 300: preform; 310: external thread; 320: bump; 10: base; 20: positioning portion; 21: positioning groove; 211: internal thread; 211a: guide section; 212: thread entry point; 22: through hole; 30: joint; L1: first radius dimension; L2: second radius dimension; L3: third radius dimension; L4: fourth radius dimension; θ: angle. DETAILED DESCRIPTION

[0024] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the embodiments described are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0025] See also Figures 1 to 8 FIG. 1 shows a preform positioning structure 100 according to an embodiment of the present invention. The preform positioning structure 100 is movably mounted on a conveying device 210 of a bottle blowing machine 200 and is used to position a preform 300 . The preform positioning structure 100 includes a base 10 and a positioning portion 20 .

[0026] The base 10 is movably mounted on the conveying device 210 .

[0027] like Figures 1 to 3 As shown, in this embodiment of the present invention, the base 10 is cylindrical and has a first radius L1. The positioning portion 20 is provided on the base 10 and is recessed with a positioning groove 21. The positioning groove 21 has an internal thread 211. The opening of the positioning groove 21 is provided with a thread entry 212. The thread entry 212 is used to allow the starting point of an external thread 310 of the preform 300 to enter, so that the internal thread 211 and the external thread 310 screw together and position the preform 300 at a fixed position P1. The positioning portion 20 is cylindrical and has a second radius L2, which is smaller than the first radius L1.

[0028] like Figures 1 to 7As shown, in this embodiment of the present invention, the internal thread 211 is provided with an inclined guide section 211a at the inner edge of the opening of the positioning groove 21. The guide section 211a extends to the thread entry point 212. This allows the starting point of the external thread 310 of the preform 300 to be smoothly guided to the thread entry point 212, so that the external thread 310 can be securely screwed together with the internal thread 211 to fix the position of the preform 300.

[0029] Furthermore, if Figure 7 See also Figures 1 to 4 The outer edges of the preform 300 are provided with protruding bumps 320 on both sides. When the preform 300 is in the fixed position P1, the included angle θ between the protruding bumps 320 and the thread entry point 212 is 90 degrees. The position of the protruding bumps 320 allows the user and the position recognition module (not shown) of the bottle blowing machine 200 to confirm whether the preform 300 is correctly fixed in the fixed position P1.

[0030] Furthermore, if Figure 6 See also Figures 1 to 4 As shown, when the starting point of the external thread 310 is at the thread entry point 212, the protrusion 320 is located just above the thread entry point 212. Therefore, the position of the protrusion 320 allows the user and the position recognition module (not shown) of the bottle blowing machine 200 to confirm whether the bottle preform 300 is correctly screwed into the positioning groove 21 at the beginning.

[0031] like Figures 1 to 4 As shown, in this embodiment of the present invention, a through hole 22 is provided on the bottom surface of the positioning portion 20. The through hole 22 extends through and communicates with the base 10. Thus, an air blowing device (not shown) of the bottle blowing machine 200 can be installed through the through hole 22 to enable the air blowing device to blow the preform 300. The through hole 22 has a third radius L3, which is smaller than the second radius L2.

[0032] like Figures 1 to 3 As shown, in this embodiment of the present invention, a coupling portion 30 is further included. The coupling portion 30 is recessed between the base 10 and the positioning portion 20, and the coupling portion 30 is connected to the conveying device 210. The coupling portion 30 has a fourth radius L4, which is smaller than the second radius L2.

[0033] Thus, the present invention can secure the relative position of the preform 300 and the positioning portion 20, resolving positioning errors and improving product yield. Furthermore, the guide segment 211a can reduce the risk of the preform 300 becoming skewed, further improving the fit between the preform 300 and the positioning portion 20.

Claims

1. A preform positioning structure, movably mounted on a conveying device of a bottle blowing machine, for positioning a preform, characterized in that: The preform positioning structure comprises: a base movably mounted on the conveying device; and a positioning portion mounted on the base, the positioning portion having a recessed positioning groove having an internal thread, the opening of the positioning groove having a threaded entry portion for allowing a starting point of an external thread of the preform to enter the threaded entry portion so that the internal thread and the external thread are screwed together, thereby positioning the preform in a fixed position.

2. The preform positioning structure according to claim 1, characterized in that: The internal thread is provided with an inclined guide section at the inner edge of the opening of the positioning groove, and the guide section extends to the entry point of the thread.

3. The preform positioning structure according to claim 1, characterized in that: The base and the positioning portion are cylindrical.

4. A preform positioning structure according to claim 1 or 3, characterized in that: The base has a first radius size, and the positioning portion has a second radius size, and the second radius size is smaller than the first radius size.

5. The preform positioning structure according to claim 1, characterized in that: A through hole is provided on the bottom surface of the positioning portion, and the through hole penetrates and communicates with the base.

6. The preform positioning structure according to claim 5, characterized in that: The through hole has a third radius size, and the third radius size is smaller than the second radius size.

7. The preform positioning structure according to claim 1, characterized in that: The utility model further comprises a coupling portion, which is recessed between the base and the positioning portion and is connected to the conveying device.

8. The preform positioning structure according to claim 7, characterized in that: The connecting portion has a fourth radius dimension, and the fourth radius dimension is smaller than the second radius dimension.

9. The preform positioning structure according to claim 1, characterized in that: A bump is protruded on both sides of the outer edge of the bottle preform. When the bottle preform is in the fixed position, the included angle between the bump and the entry point of the thread is 90 degrees.

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