Rotatable bottle blank seat assembly of bottle blowing machine

Abstract

The utility model relates to the technical field of bottle blowing machines, in particular to a rotatable bottle blank seat assembly of a bottle blowing machine, which comprises a seat body, a rotating part and a blank inserting head, the rotating part is arranged inside the seat body, the inner side of the seat body is rotatably connected with the rotating part through a ball bearing, a chain wheel is fixedly arranged at the bottom end of the rotating part, and the blank inserting head is arranged on the seat body. An inserting hole is formed in the top end of the rotating part, a round pin capable of being inserted into the inserting hole is arranged at the bottom end of the blank inserting head, and a plurality of groups of convex keys are arranged on the periphery of the outer wall of the round pin; according to the bottle blank seat assembly, through the arrangement of the structures such as the inserting hole, the round pin, the convex key, the key groove and the threaded sleeve, the blank inserting head can be conveniently and rapidly installed on the rotating part or detached from the rotating part in the using process of the bottle blank seat assembly, so that a user can conveniently install the blank inserting heads of different specifications on the rotating part according to the production requirements of bottle blanks; and the applicability of the bottle blank seat assembly is effectively improved.

Description

Technical Field

[0001] This utility model relates to the field of blow molding machine technology, and more specifically, to a rotatable blow molding machine preform holder assembly. Background Technology

[0002] The preform holder is an important component of a blow molding machine, used to hold the preforms in place.

[0003] The preform insert head at the top of the existing preform holder is usually an integral structure with the preform holder body. During use, it is difficult to remove the preform insert head from the preform holder for replacement. As a result, a set of preform holders can only process preforms of a fixed diameter, which cannot meet the processing needs of preforms of different sizes and has low applicability. Utility Model Content

[0004] This invention provides a rotatable preform holder assembly for a blow molding machine, which solves the technical problem in the prior art where it is difficult to remove the preform insert head from the preform holder for replacement, resulting in low applicability.

[0005] In view of the above problems, the technical solution proposed by this utility model is as follows:

[0006] A rotatable preform holder assembly for a blow molding machine includes a base, a rotating part, and a preform insertion head. The rotating part is disposed inside the base, and the inner side of the base and the rotating part are rotatably connected by a ball bearing. A sprocket is fixedly disposed at the bottom end of the rotating part, and an insertion hole is disposed at the top end of the rotating part. A round pin that can be inserted into the insertion hole is disposed at the bottom end of the insertion head. Several sets of protruding keys are disposed around the outer wall of the round pin. Several sets of keyways corresponding to the protruding keys are disposed around the insertion hole. A set of threaded sleeves is nested on the outer side of the round pin, and the outer surface of the insertion hole is provided with external threads that cooperate with the threaded sleeves.

[0007] Furthermore, the ball bearings are installed in three groups on the inner side of the seat body, with two groups of ball bearings installed in the slots at the top and bottom of the seat body respectively, and the other group of ball bearings installed in the middle position inside the seat body.

[0008] Furthermore, the top of the insert head is provided with a contraction section, and the end of the contraction section has a rounded corner structure.

[0009] Furthermore, the insert head is provided with sealing rings, which are distributed in three groups on the outer surface of the insert head.

[0010] Furthermore, a hexagonal ring is provided on the outer surface of the threaded sleeve.

[0011] Furthermore, the rotating part and the insert head are made of aluminum alloy, and the surfaces of the rotating part and the insert head are provided with an electroplated anti-corrosion layer.

[0012] Compared with the prior art, the beneficial effects of this utility model are: through the setting of structures such as insertion holes, round pins, convex keys, keyways, and screw sleeves, the preform holder assembly can conveniently and quickly install the preform head onto the rotating part or remove the preform head from the rotating part during use, which makes it convenient for users to install preform heads of different specifications onto the rotating part according to the production needs of the preform, effectively improving the applicability of the preform holder assembly. Attached Figure Description

[0013] To more clearly illustrate the technical solutions of the embodiments of this utility model, the drawings used in the embodiments will be briefly introduced below. It should be understood that the following drawings only show some embodiments of this utility model and should not be regarded as a limitation of the scope. For those skilled in the art, other related drawings can be obtained from these drawings without creative effort.

[0014] Figure 1 This is a schematic diagram of the overall structure of this utility model;

[0015] Figure 2 This is a schematic diagram of the disassembled structure of this utility model;

[0016] Figure 3 This is a cross-sectional structural diagram of the base and rotating part in this utility model;

[0017] Figure 4 This is a schematic diagram of the structure of the threaded sleeve and hexagonal ring in this utility model.

[0018] In the diagram: 1. Base; 2. Rotating part; 3. Insertion head; 4. Ball bearing; 5. Sprocket; 6. Insertion hole; 7. Round pin; 8. Raised key; 9. Keyway; 10. Screw sleeve; 11. External thread; 12. Shrinkage part; 13. Sealing ring; 14. Hexagonal ring. Detailed Implementation

[0019] To make the objectives, technical solutions, and advantages of the embodiments of this utility model clearer, the technical solutions of the embodiments of this utility model will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this utility model, not all embodiments. Based on the embodiments of this utility model, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this utility model.

[0020] Therefore, the following detailed description of the embodiments of the present invention provided in the accompanying drawings is not intended to limit the scope of the claimed invention, but merely to illustrate selected embodiments of the invention. All other embodiments obtained by those skilled in the art based on the embodiments of the present invention without inventive effort are within the scope of protection of the present invention.

[0021] Please see Figure 1-4 A rotatable preform holder assembly for a blow molding machine includes a base 1, a rotating part 2, and a preform insertion head 3. The rotating part 2 is disposed inside the base 1, and the inner side of the base 1 is rotatably connected to the rotating part 2 via a ball bearing 4. A sprocket 5 is fixedly disposed at the bottom end of the rotating part 2, which can be driven to rotate by a chain, thereby causing the rotating part 2 to rotate under the drive of the sprocket 5. An insertion hole 6 is provided at the top end of the rotating part 2, and a round pin 7 is provided at the bottom end of the preform insertion head 3. The round pin 7 can be inserted into the interior of the insertion hole 6, and several sets of protruding keys 8 are provided around the outer wall of the round pin 7. Several sets of keyways 9 corresponding to the protruding keys 8 are opened around the insertion hole 6. When the round pin 7 is inserted into the interior of the insertion hole 6, the round pin 7 rotates into the insertion hole 3. The protruding key 8 around the pin 7 extends out of the socket 6 through the keyway 9. At this time, the pin 7 cannot rotate inside the socket 6 due to the restriction of the protruding key 8 and the keyway 9. A set of threaded sleeves 10 are nested on the outside of the pin 7. The outer surface of the socket 6 is provided with external threads 11 that cooperate with the threaded sleeves 10. When the pin 7 is inserted into the socket 6, the threaded sleeves 10 can be rotated and screwed onto the socket 6. During this process, the threaded sleeves 10 can move downward along the socket 6 and abut against the protruding key 8 extending out of the socket 6. The protruding key 8 will be pressed down by the threaded sleeves 10 and cannot move upward. As a result, the pin 7 cannot move upward due to the restriction of the protruding key 8 and the threaded sleeves 10, so that it can be fixed inside the socket 6.

[0022] By inserting the round pin 7 at the bottom of the insert head 3 into the insertion hole 6 at the top of the rotating part 2, the protruding key 8 around the round pin 7 will extend outward through the keyway 9 to the outside of the insertion hole 6. At this time, the round pin 7 cannot rotate inside the insertion hole 6 due to the restriction of the protruding key 8 and the keyway 9. Then, aligning and tightening the threaded sleeve 10 on the outside of the insertion hole 6 will press down the protruding key 8 extending outward from the insertion hole 6. At this time, the protruding key 8 cannot move upward due to the restriction of the threaded sleeve 10, so that the round pin 7 can be fixedly inserted into the insertion hole 6. Thus, the insert head 3 is fixedly installed at the top of the rotating part 2. After inserting the end of the bottle preform into the top of the insert head 3, the rotation is driven by the sprocket 5. When part 2 rotates, the preform inserted into the top of the preform inserter 3 can be rotated. When the rotating part 2 needs to be replaced, the screw sleeve 10 can be unscrewed from the insertion hole 6. At this time, the protruding key 8 around the round pin 7 will no longer be pressed by the screw sleeve 10, so the round pin 7 can be pulled directly upward from the inside of the insertion hole 6, thus separating the preform inserter 3 from the rotating part 2. It can be seen that the preform holder assembly can conveniently and quickly install the preform inserter 3 onto the rotating part 2 or remove the preform inserter 3 from the rotating part 2 during use. This allows users to install different specifications of preform inserters 3 onto the rotating part 2 according to the production needs of the preform, thereby effectively improving the applicability of the preform holder assembly.

[0023] For further details, please refer to Figure 1-4 The ball bearings 4 are installed in three sets inside the base 1. Two sets of ball bearings 4 are installed in the slots at the top and bottom of the base 1, respectively, and the other set of ball bearings 4 is installed in the middle of the base 1. The three sets of ball bearings 4 can provide relatively stable support for the rotating part 2. When the rotating part 2 rotates relative to the base 1, it is not easy to deviate, so that the preform on the insert head 3 can remain stable and avoid affecting the processing of the preform.

[0024] For further details, please refer to Figure 1-4 The top of the insert head 3 is provided with a shrinkage part 12. The end of the shrinkage part 12 is a rounded corner structure, which allows the port of the bottle preform to be smoothly aligned and inserted into the insert head 3, avoiding difficulties in inserting the bottle preform and affecting production efficiency.

[0025] For further details, please refer to Figure 1-4 The insert head 3 is provided with a sealing ring 13. The sealing ring 13 is distributed in three groups on the outer surface of the insert head 3. When the end of the preform is inserted into the insert head 3, the sealing ring 13 can improve the sealing between the insert head 3 and the inner wall of the preform end, making it difficult for the preform to fall off the insert head 3.

[0026] For further details, please refer to Figure 1-4The outer surface of the threaded sleeve 10 is provided with a hexagonal ring 14. The operator can use a wrench to clamp the hexagonal ring 14 firmly, which makes it easy for the user to rotate and tighten the threaded sleeve 10.

[0027] Furthermore, the rotating part 2 and the insert head 3 are made of aluminum alloy, which has high strength and light weight, and is not easily deformed during use. In addition, the surfaces of the rotating part 2 and the insert head 3 are provided with an electroplated anti-corrosion layer, which can prevent the rotating part 2 and the insert head 3 from rusting and ensure service life.

[0028] The above are merely preferred embodiments of this utility model and are not intended to limit the scope of this utility model. Various modifications and variations can be made to this utility model by those skilled in the art. Any modifications, equivalent substitutions, or improvements made within the spirit and principles of this utility model should be included within the protection scope of this utility model.

Claims

1. A rotatable bottle preform seating assembly of a blow molding machine, comprising a seat body (1), a rotating part (2) and a preform inserting head (3), characterized in that, The rotating part (2) is disposed inside the seat (1). The inner side of the seat (1) and the rotating part (2) are rotatably connected by a ball bearing (4). A sprocket (5) is fixedly disposed at the bottom end of the rotating part (2). An insertion hole (6) is disposed at the top end of the rotating part (2). A round pin (7) that can be inserted into the insertion hole (6) is disposed at the bottom end of the insertion head (3). Several sets of protruding keys (8) are disposed around the outer wall of the round pin (7). Several sets of keyways (9) corresponding to the protruding keys (8) are opened around the insertion hole (6). A set of threaded sleeves (10) is nested on the outer side of the round pin (7). An external thread (11) that cooperates with the threaded sleeves (10) is disposed on the outer surface of the insertion hole (6).

2. A rotatable bottle preform rest assembly for a bottle blowing machine as defined in claim 1, wherein, The ball bearings (4) are installed in three groups on the inner side of the seat (1), with two groups of ball bearings (4) installed in the slots at the top and bottom of the seat (1) respectively, and the other group of ball bearings (4) installed in the middle position inside the seat (1).

3. The rotatable preform holder assembly for a blow molding machine according to claim 1, characterized in that, The top of the blank insert (3) is provided with a shrinkage part (12), and the end of the shrinkage part (12) is a rounded corner structure.

4. The rotatable bottle preform rest assembly of claim 1 wherein, The blank insertion head (3) is provided with a sealing ring (13), and the sealing ring (13) is distributed in three groups on the outer surface of the blank insertion head (3).

5. The rotatable bottle preform rest assembly of claim 1 wherein, The outer surface of the threaded sleeve (10) is provided with a hexagonal ring (14).

6. The rotatable bottle preform rest assembly of claim 1 wherein, The rotating part (2) and the insert head (3) are made of aluminum alloy, and the surfaces of the rotating part (2) and the insert head (3) are provided with an electroplated anti-corrosion layer.

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