Plug connector for bottle blank and bottle blowing machine using plug connector
By introducing clamping components of arc-shaped pressing plates and springs into the plugs of the bottle blowing machine, the problems of high machining accuracy of the plugs and complex structure of the Haf clamps in the prior art are solved, and the reliable clamping and user experience of the bottle preforms are improved.
Patent Information
- Application Number
- CN202420256539.2
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-02-02
- Publication Date
- 2025-04-29
- Estimated Expiration
- 2034-02-02
AI Technical Summary
Due to the high requirements for the machining accuracy of the plug-in part, the plug-in parts in the existing bottle blowing machines are prone to troublesome insertion or failure to be firmly plugged in, causing the bottle preform to fall off the plug-in and affect the user experience. At the same time, in the prior art, Haf clamps need to be specially equipped with a drive source, resulting in complex structures and increasing equipment costs.
A plug-in for bottle preform is designed, which includes a rod-shaped body and a clamping assembly. The clamping assembly is composed of an arc-shaped pressing plate and a clamping spring. The arc-shaped pressing plate is closely fitted with the outer wall of the plug-in. The clamping spring clamps the opening of the bottle preform through an elastic force to form an annular clamping groove, which improves clamping reliability and reduces the requirements for machining accuracy of the plug-in.
Through the cooperation of arc-shaped pressing plate and spring, effective clamping of the bottle preform is achieved, preventing disengagement, simplifying structural design, improving user experience, and reducing equipment costs.
Smart Images
Figure CN222807595U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the field of plastic processing, in particular to a connector for bottle blanks and a bottle blowing machine using the connector. Background Art
[0002] The existing bottle blowing machine includes a frame and a conveying mechanism, a blank connection mechanism, a heating mechanism, a bottle blowing mechanism and a bottle removing mechanism arranged on the frame. The conveying mechanism includes an annular guide rail and a plug-in component that slides cyclically along the guide rail. The plug-in component first obtains the bottle blank in the blank connection mechanism, then obtains the bottle body after passing through the heating mechanism and the bottle blowing mechanism in sequence, and finally obtains the bottle body through the bottle removing mechanism. The existing plug-in component includes a tubular body, and a plug-in component is provided at the bottom of the body. The diameter of the plug-in component is not less than the inner diameter of the blank mouth of the bottle blank. When in use, the body is tightly inserted into the blank mouth through the plug-in component, and the friction between the outer wall of the plug-in component and the inner wall of the blank mouth is used to clamp and position the bottle blank. Since the friction between the two needs to be obtained through radial friction, the processing accuracy of the plug-in component is relatively high. It is easy to cause trouble in plugging and unplugging due to the excessively large diameter of the plug-in component, and it is also easy to cause the plug-in component to be unable to be firmly plugged due to the excessively small diameter of the plug-in component, resulting in the bottle blank being separated from the plug-in component, affecting the user experience.
[0003] In addition, the existing bottle blanks are also transported by Haff clamps, but the Haff clamps require a dedicated driving source, which leads to a complex structure, increases equipment costs, and affects the user experience. Utility Model Content
[0004] In order to address the deficiencies in the prior art, the utility model provides a connector for a bottle blank and a bottle blowing machine using the same. By arranging a clamping assembly to cooperate with the plug-in part, the bottle blank can be effectively clamped to prevent detachment, and the machining accuracy requirements for the plug-in part can be reduced, thereby improving the user experience.
[0005] The utility model is realized in the following manner: a plug-in connector for a bottle blank comprises a rod-shaped body, a clamping assembly is arranged at the bottom of the body, the clamping assembly comprises an arc-shaped pressing piece that fits the periphery of the plug-in part and a clamping spring sleeved on the arc-shaped pressing piece, the arc-shaped pressing piece is driven by the clamping spring to clamp the blank mouth of the bottle blank. The clamping spring is sleeved on the arc-shaped pressing piece, and the elasticity of the clamping spring is used to apply a radial force to the arc-shaped pressing piece, so that the arc-shaped pressing piece is tightly clamped on the blank mouth of the bottle blank, and the blank mouth of the bottle blank is clamped by the arc-shaped pressing piece, so as to improve the clamping reliability, prevent the bottle blank from being separated, effectively simplify the structure, and improve the use experience.
[0006] Preferably, the bottom of the body is provided with an inserting portion surrounded by an arc-shaped pressing sheet, and the inner side wall of the arc-shaped pressing sheet and the outer side wall of the inserting portion enclose an annular clamping groove for clamping the blank opening. The arc-shaped pressing sheet and the outer side wall of the inserting portion are tightly attached to form an annular clamping groove for clamping the blank opening of the bottle blank, which can not only clamp the blank opening of the bottle blank through the cooperation of the arc-shaped pressing sheet and the inserting portion, but also reduce the processing accuracy requirements of the inserting portion.
[0007] Preferably, the arc-shaped pressing sheets are at least two pieces, and the arc-shaped pressing sheets are circumferentially assembled and surround the periphery of the plug-in portion. The number of the arc-shaped pressing sheets is not less than two, which is convenient for the arc-shaped pressing sheets to be assembled to surround the periphery of the plug-in portion, and also ensures that the blank mouth is effectively clamped and positioned by increasing the force application points, thereby preventing the bottle blank from radially deviating.
[0008] Preferably, the arc-shaped pressing pieces are three pieces, and the central angle corresponding to the inner edge of the arc-shaped pressing piece is not greater than 60°, so as to form an expansion joint between the corresponding end edges of adjacent arc-shaped pressing pieces. The three arc-shaped pressing pieces are wrapped by the clip spring and arranged tightly around the plug-in portion, which not only increases the force application points by increasing the number of arc-shaped pressing pieces and improves the clamping reliability, but also facilitates processing and assembly by limiting the number of arc-shaped pressing pieces. By shortening the arc length of the inner edge of the arc-shaped pressing piece to ensure that the expansion joint is reserved between adjacent arc-shaped pressing pieces, it is convenient for each arc-shaped pressing piece to be radially offset so that the width of the clamping groove meets the requirements of the blank insertion, and also ensures that the arc-shaped pressing pieces do not interfere with each other, thereby improving the clamping reliability.
[0009] Preferably, the diameter of the inner side wall of the arc-shaped pressing sheet matches the diameter of the plug-in portion, so that the inner edge of the arc-shaped pressing sheet matches and fits with the peripheral edge of the plug-in portion. When the preform is separated from the clamping groove, the inner side wall of the arc-shaped pressing sheet can match and fit with the outer side wall of the plug-in portion, which plays a role in circumferential positioning and correction of the arc-shaped pressing sheet, ensuring that the arc-shaped pressing sheets do not contact or interfere with each other when radially separating from the plug-in portion.
[0010] Preferably, the notch of the clamping groove is opened along the length direction of the body, and the notch is flared to guide the blank to be inserted into the annular clamping groove. The notch is flared to guide the top edge of the blank to be inserted into the clamping groove, and the notch can convert the vertical force when the blank is vertically inserted into the radial force to drive the arc-shaped pressing piece to expand radially, and accumulate the reset preload force by driving the deformation of the clamping spring to ensure that the blank is firmly clamped between the inner wall of the arc-shaped pressing piece and the outer wall of the plug-in part.
[0011] Preferably, an embedding groove is provided on the outer wall of the arc-shaped pressing plate, and the clamping spring is C-shaped and embedded in the corresponding embedding groove to limit the clamping spring from detaching from the arc-shaped pressing plate. The embedding groove is arranged circumferentially along the outer wall of the arc-shaped pressing plate, so that the clamping spring can play a role of tightening and limiting the arc-shaped pressing plate surrounding the plug-in part, which not only prevents the arc-shaped pressing plate from radially detaching from the plug-in part, but also can play a role of radially limiting the blank mouth through the arc-shaped pressing plate, thereby ensuring the clamping reliability. The width of the embedding groove matches the thickness of the clamping spring, which plays a role of vertically limiting the clamping spring and prevents the clamping spring from sliding along the outer wall of the arc-shaped pressing plate.
[0012] Preferably, there are at least two clips, which are arranged along the length of the body. By providing multiple clips to increase the clamping force of the arc-shaped pressing piece, it is also possible to effectively prevent the arc-shaped pressing piece from being separated from the clips due to edge warping, ensuring that the inner side wall of the arc-shaped pressing piece is always arranged close to the outer side wall of the plug-in portion.
[0013] Preferably, the middle part of the body is recessed to form an annular positioning groove, and the top edge of the inner wall of the arc-shaped pressing piece is raised to form a limiting strip, which is embedded in the positioning groove to limit the displacement of the arc-shaped pressing piece along the length direction of the body. The clamping spring radially clamps the arc-shaped pressing piece, so that the limiting strip is radially clamped in the positioning groove, which plays a vertical limiting role on the arc-shaped pressing piece, ensuring that the edges on both sides of the clamping groove are aligned.
[0014] Preferably, the middle of the body is provided with an axially penetrating through hole, which forms a passage for the stretching rod to pass through, so that the preform can be vertically stretched by the inserted stretching rod when entering the bottle blowing mechanism, ensuring that the preform can be blown into a bottle body.
[0015] A bottle blowing machine comprises a frame and a conveying mechanism, a blank joining mechanism, a heating mechanism, a bottle blowing mechanism and a bottle removing mechanism arranged on the frame, wherein the conveying mechanism comprises an annular guide rail and a plug-in component that moves cyclically along the guide rail, wherein the plug-in component receives the bottle blank at the blank joining mechanism and obtains the bottle body after passing through the heating mechanism and the bottle blowing mechanism in sequence, so that the bottle body is separated from the plug-in component by the bottle removing mechanism. The conveying mechanism conveys the bottle blank through the plug-in component through the plug-in component, and the bottle blank passes through the heating mechanism and the bottle blowing mechanism in sequence, so that the bottle blank is processed to form a bottle body, and the bottle removing mechanism detaches the bottle body from the plug-in component, so that the plug-in component obtains a new bottle blank by passing through the blank joining mechanism again, and the bottle body processing is repeated in this way.
[0016] The beneficial effects of the utility model are as follows: the retaining spring is sleeved on the arc-shaped pressing sheet, and the elasticity of the retaining spring is used to apply a radial force to the arc-shaped pressing sheet, so that the arc-shaped pressing sheet and the outer side wall of the plug-in part are tightly fitted to form an annular clamping groove for clamping the mouth of the bottle blank. The mouth of the bottle blank can be clamped by the cooperation of the arc-shaped pressing sheet and the plug-in part to improve the clamping reliability and prevent the bottle blank from detaching, and the processing accuracy requirements for the plug-in part are reduced, thereby improving the user experience. BRIEF DESCRIPTION OF THE DRAWINGS
[0017] Figure 1 This is a schematic diagram of the structure of the insert blank described in Example 1;
[0018] Figure 2 This is a schematic diagram of the disassembled structure of the insert blank described in Example 1;
[0019] Figure 3 It is a schematic cross-sectional structural diagram of the insert blank described in Example 1;
[0020] Figure 4 It is a schematic cross-sectional view of the disassembled structure of the clamping assembly described in Example 1;
[0021] Figure 5 It is a cross-sectional structural schematic diagram of another insert blank of the first embodiment;
[0022] In the figure: 1, body, 2, plug-in part, 3, clamping assembly, 4, arc-shaped pressing piece, 5, retaining spring, 6, through hole, 7, bottle blank, 8, clamping groove, 9, embedding groove, 10, positioning groove, 11, limiting strip. DETAILED DESCRIPTION
[0023] The essential features of the present utility model are further described below in conjunction with the accompanying drawings and specific implementation methods.
[0024] Embodiment 1:
[0025] This embodiment provides a plug connector.
[0026] like Figure 1 and 2 The plug-in connector shown in the figure is composed of a rod-shaped body 1, a plug-in portion 2 is provided at the bottom of the body 1, a clamping assembly 3 is provided at the periphery of the plug-in portion 2, the clamping assembly 3 includes an arc-shaped pressing sheet 4 that fits with the periphery of the plug-in portion 2 and a clamping spring 5 sleeved on the arc-shaped pressing sheet 4, an annular clamping groove 8 is formed between the inner side wall of the arc-shaped pressing sheet 4 and the outer side wall of the plug-in portion 2, and the arc-shaped pressing sheet 4 is driven by the clamping spring 5 to move toward the plug-in portion 2 and clamp the blank mouth of the bottle blank 7. The clamping spring 5 is sleeved on the arc-shaped pressing sheet 4, and the elasticity of the clamping spring 5 is used to apply a radial force to the arc-shaped pressing sheet 4, so that the arc-shaped pressing sheet 4 and the outer side wall of the plug-in portion 2 are tightly fitted to form an annular clamping groove 8 for clamping the blank mouth of the bottle blank 7, which can not only clamp the blank mouth of the bottle blank 7 through the cooperation of the arc-shaped pressing sheet 4 and the plug-in portion 2, improve the clamping reliability, prevent the bottle blank 7 from being separated, but also reduce the processing accuracy requirements of the plug-in portion 2, and improve the use experience.
[0027] In this embodiment, the arc-shaped pressing piece 4 is composed of three pieces, and the arc-shaped pressing piece 4 is circumferentially spliced and surrounds the periphery of the plug-in part 2. The central angle corresponding to the inner edge of the arc-shaped pressing piece 4 is 60°, and the arc-shaped pressing piece 4 is arranged in sequence in the circumference to enclose and form an annular structure that wraps the plug-in part 2. During installation, first, the three arc-shaped pressing pieces 4 are spliced in sequence in the circumference, and the limiting strips 11 of each arc-shaped pressing piece 4 are embedded in the positioning groove 10, so that the embedding grooves 9 of each arc-shaped pressing piece 4 are circumferentially connected and form an annular structure; then, the clamping spring 5 is placed on the three arc-shaped pressing pieces 4 by opening and expanding the diameter, and the inner edge of the clamping spring 5 is embedded in the embedding groove 9 under the action of the reset preload force; finally, the assembly reliability between the arc-shaped pressing pieces 4 is improved by clamping multiple clamping springs 5.
[0028] After installation, the arc pressing sheet 4 is tightly positioned by the retaining spring 5, so that the arc pressing sheet 4 is assembled to form an annular structure, and the adjacent arc pressing sheets 4 are limited by the retaining spring 5 to achieve close fit with the outer wall of the plug-in part 2, and the vertical positions of adjacent arc pressing sheets 4 are relatively fixed, ensuring that the bottom edges of the arc pressing sheets 4 are flush and that the clamping groove 8 has a flat notch, so as to reliably clamp the mouth of the bottle blank 7.
[0029] In this embodiment, there are at least two clamping springs 5, and they are separated along the length direction of the body 1. There are two clamping springs 5, and the outer side wall of the arc-shaped pressing piece 4 is provided with vertically separated embedding grooves 9, so that the clamping springs 5 are clamped in the corresponding embedding grooves 9, ensuring that the top and bottom of the arc-shaped pressing piece 4 can be clamped and positioned by the corresponding clamping springs 5. The clamping springs 5 located on the upper part of the arc-shaped pressing piece 4 are arranged at the same height as the limiting strip 11, ensuring that the limiting strip 11 can be tightly embedded in the positioning groove 10 (such as Figure 3 The retaining spring 5 located at the lower part of the arc-shaped pressing plate 4 can provide a reset preload force to ensure that the clamping groove 8 effectively clamps the blank mouth of the bottle blank 7 to prevent the bottle blank 7 from being separated from the connector.
[0030] In this embodiment, the arc-shaped pressing sheet 4 can be shifted and switched between the idle station and the clamping station to meet the plugging and unplugging requirements of the preform 7. When the arc-shaped pressing sheet 4 is in the idle station, the corresponding circumferential end edges of the adjacent arc-shaped pressing sheets 4 are closely fitted, and the inner side wall of the arc-shaped pressing sheet 4 is closely fitted with the outer side wall of the plug-in part 2, ensuring that the relative position between the adjacent arc-shaped pressing sheets 4 is fixed, and preventing the arc-shaped pressing sheets 4 from being relatively displaced; when the arc-shaped pressing sheet 4 is radially displaced outward to the clamping station due to the insertion of the preform 7 into the clamping groove 8, the corresponding circumferential end edges of the adjacent arc-shaped pressing sheets 4 are separated and expansion joints are formed, which facilitates the independent movement of each arc-shaped pressing sheet 4 without interfering with each other, and also obtains the radial reset preload force by driving the clamping spring 5 to open and expand the diameter, and the inner side wall of the arc-shaped pressing sheet 4 uses the radial reset preload force to cooperate with the outer side wall of the plug-in part to clamp the blank mouth of the preform 7.
[0031] In this embodiment, the diameter of the inner side wall of the arc-shaped pressing sheet 4 matches the diameter of the plug-in portion 2, so that the inner edge of the arc-shaped pressing sheet 4 matches and fits with the peripheral edge of the plug-in portion 2, and the inner side wall diameter of the arc-shaped pressing sheet 4 matches the outer side wall diameter of the plug-in portion 2. The arc-shaped pressing sheet 4 in the idle position can achieve circumferential limit by the circumferential end edge abutment, and can also achieve radial limit by the inner side wall and the outer side wall of the plug-in portion 2 tightly. The diameter of the plug-in portion 2 matches the diameter of the inner side wall of the blank opening of the bottle blank 7, ensuring that the plug-in portion 2 can be smoothly inserted into the blank opening.
[0032] In this embodiment, the notch of the clamping groove 8 is opened along the length direction of the body 1, and the notch is flared to guide the blank mouth to be inserted into the annular clamping groove 8. When the arc-shaped pressing sheet 4 is in an idle position, the inner side wall of the arc-shaped pressing sheet 4 matches and fits with the outer side wall of the plug-in portion 2. The width of the clamping groove 8 is small, but the clamping groove 8 receives the blank mouth of the bottle blank 7 through the flared notch, and ensures that the arc-shaped pressing sheet 4 can switch to the clamping position. The inner edge of the bottom surface of the arc-shaped pressing sheet 4 is formed into an inclined surface by concavity, and an flared notch is formed between the inclined surface and the outer side wall of the plug-in portion 2, and the vertical projection of the inclined surface completely covers the outer edge of the top surface of the blank mouth. Specifically, the insertion width of the clamping groove 8 is greater than the thickness of the blank mouth of the bottle blank 7. When the blank mouth of the bottle blank 7 is inserted into the groove from bottom to top, the outer edge of the top surface of the blank mouth vertically contacts the inclined surface. The blank mouth applies a vertical force to the inclined surface, and the inclined surface converts the vertical force into a radial force and drives the arc-shaped pressing piece 4 to move radially outward. The thickness of the clamping groove 8 is increased and the insertion of the blank mouth is facilitated. The retaining spring 5 opens and expands its diameter under the drive of the arc-shaped pressing piece 4 and accumulates a radial reset preload, so that the clamping groove 8 can effectively clamp the inserted blank mouth of the bottle blank 7, effectively improving the anti-slip performance of the clamping groove 8.
[0033] In this embodiment, the outer side wall of the arc-shaped pressing sheet 4 is provided with an embedding groove 9 (such as Figure 4 As shown in the figure, the clamping spring 5 is C-shaped and embedded in the corresponding embedding groove 9 to prevent the clamping spring 5 from being separated from the arc-shaped pressing piece 4. The embedding groove 9 is arranged circumferentially along the outer wall of the arc-shaped pressing piece 4, so that the arc-shaped pressing piece 4 can be assembled through the embedding groove 9 to form an annular groove when wrapping the plug-in part 2, which facilitates the inner edge of the clamping spring 5 to be closely embedded. The width of the embedding groove 9 matches the thickness of the clamping spring 5, and the vertical offset between adjacent arc-shaped pressing pieces 4 is prevented by eliminating the gap between the side wall of the clamping spring 5 and the side wall of the embedding groove 9, thereby ensuring that the bottom surface of the arc-shaped pressing piece 4 is flush with each other.
[0034] In this embodiment, the middle part of the body 1 is recessed to form an annular positioning groove 10, and the top edge of the inner wall of the arc-shaped pressing sheet 4 is raised to form a limiting strip 11, and the limiting strip 11 is embedded in the positioning groove 10 to limit the displacement of the arc-shaped pressing sheet 4 along the length direction of the body 1. The limiting strip 11 is arranged on the top of the inner wall of the arc-shaped pressing sheet 4, which not only plays a vertical limiting role on the arc-shaped pressing sheet 4, but also does not hinder the operation of the clamping groove 8. The length direction of the limiting strip 11 is arranged horizontally, and the positioning groove 10 is annular and circumferentially arranged around the outer wall of the plug-in part 2, which facilitates the installation of the arc-shaped pressing sheet 4 and ensures that the height of the notches on both sides of the clamping groove 8 is consistent, thereby improving the clamping reliability by increasing the radial projection area between the groove walls on both sides of the clamping groove 8.
[0035] In this embodiment, a slip ring is sleeved on the body 1, and an annular slide groove is provided on the outer wall of the slip ring. The body slides along the preset slide rail through the slide groove, thereby ensuring that the connector moves accurately along the preset path. In addition, a roller can also be provided on the body, and the roller is used to move along the preset slide rail, which should also be regarded as a specific implementation of this embodiment.
[0036] In this embodiment, the periphery of the top surface of the plug-in portion 2 is extended outward to form a limiting ring. When the insert is moved into the bottle blowing mechanism, the limiting ring can be clamped and positioned by the bottle blowing mechanism to prevent the bottle blank from shifting.
[0037] In this embodiment, a gear is provided on the top of the body 1, and the gear is linked with an external chain to drive the body to rotate, so as to ensure that the preform is evenly heated and softened by rotating in the heating mechanism.
[0038] In this embodiment, the plug-in portion 2 is detachably mounted on the bottom of the body 1 by interference fit, which not only facilitates production and assembly, but also ensures that the relative positions of the two are fixed.
[0039] It can be understood that the arc-shaped pressing piece 4 is at least two pieces, which is convenient for disassembly and assembly, and can also improve the clamping reliability by increasing the number of clamping force application points, and should be regarded as a specific implementation method of this embodiment.
[0040] It can be understood that the bottom of the body 1 is not provided with a plug-in portion 2 (such as Figure 5 As shown), the top of the arc-shaped pressing piece 4 is tightly clamped on the outer side wall of the bottom of the body 1, and the bottom is suspended and enclosed to form a space for inserting the mouth of the bottle blank. The arc-shaped pressing piece 4 clamps the mouth of the blank separately under the clamping of the retaining spring 5 so that the plug-in component grabs the bottle blank, which should also be regarded as a specific implementation method of this embodiment.
[0041] Embodiment 2:
[0042] Compared with the first embodiment, this embodiment provides a bottle blowing machine.
[0043] As shown in the figure, the bottle blowing machine is composed of a frame and a conveying mechanism, a blank connecting mechanism, a heating mechanism, a bottle blowing mechanism and a bottle removing mechanism arranged on the frame. The conveying mechanism includes an annular guide rail and a plug-in component that moves cyclically along the guide rail. The plug-in component receives the bottle blank 7 at the blank connecting mechanism and obtains the bottle body after passing through the heating mechanism and the bottle blowing mechanism in sequence, so that the bottle body is separated from the plug-in component through the bottle removing mechanism. The conveying mechanism passes through the blank connecting mechanism, the heating mechanism, the bottle blowing mechanism and the bottle removing mechanism in sequence through the plug-in component that moves cyclically along the annular guide rail, thereby realizing the operations of receiving the bottle blank 7, heating the bottle blank 7, blowing the bottle blank 7 and removing the bottle, and recycling the bottle body again after it is separated, which not only effectively improves the processing efficiency, but also effectively simplifies the structure of the conveying mechanism and facilitates disassembly and maintenance.
[0044] In this embodiment, the bottle blowing mechanism includes a mold assembly and a bottle blowing assembly, and the bottle blowing assembly includes a stretching rod that can be raised and lowered. When in use, the preform 7 is moved into the mold assembly, and the stretching rod is inserted into the preform 7, and the preform 7 is stretched and blown to form the bottle body. An axial through hole 6 is provided in the middle of the body 1, and the stretching rod is inserted into the preform 7 by vertically passing through the through hole 6, and completely separated from the through hole 6 after the bottle body is blown, which ensures that the inserting rod will not interfere with the bottle body blowing operation, and also ensures that the stretching rod will not interfere with the movement of the plug-in component along the annular guide rail.
[0045] It can be understood that the through hole 6 may not be provided in the middle of the body 1, and the plug-in part is only used for conveying the preform 7 in the heating mechanism, and the heating mechanism and the bottle blowing mechanism are connected by a spacing device, which should also be regarded as a specific implementation of this embodiment. When the body is not provided with a through hole 6, a vent hole is provided in the plug-in part for connecting the inner cavity of the preform with the outside world to ensure that the air pressure of the inner cavity and the outside space is balanced when the preform is heated.
Claims
1. A plug-in connector for a bottle blank, comprising a rod-shaped body (1), characterized in that: A clamping assembly (3) is provided at the bottom of the body (1), and the clamping assembly (3) comprises an arc-shaped pressing sheet (4) which is in contact with the periphery of the plug-in portion (2) and a clamping spring (5) sleeved on the arc-shaped pressing sheet (4). The arc-shaped pressing sheet (4) is driven by the clamping spring (5) to clamp the blank mouth of the bottle blank (7).
2. A connector for a bottle blank according to claim 1, characterized in that: The bottom of the main body is provided with an inserting portion (2) surrounded by an arc-shaped pressing sheet (4), and the inner side wall of the arc-shaped pressing sheet (4) and the outer side wall of the inserting portion (2) are combined to form an annular clamping groove (8) for clamping the blank.
3. A connector for a bottle blank according to claim 2, characterized in that: The arc-shaped pressing sheet (4) is at least two pieces, and the arc-shaped pressing sheet (4) is circumferentially spliced together and surrounds the periphery of the plug-in portion (2).
4. A connector for a bottle blank according to claim 3, characterized in that: The arc-shaped pressing sheet (4) is composed of three pieces, and the central angle corresponding to the inner edge of the arc-shaped pressing sheet (4) is not greater than 60°, so as to form an expansion joint between the corresponding end edges of adjacent arc-shaped pressing sheets (4); or, the diameter of the inner side wall of the arc-shaped pressing sheet (4) matches the diameter of the plug-in portion (2), so that the inner edge of the arc-shaped pressing sheet (4) matches and fits with the peripheral edge of the plug-in portion (2).
5. A connector for a bottle blank according to claim 2, characterized in that: The notch of the clamping groove (8) is opened along the length direction of the main body (1), and the notch is in a flared shape to guide the blank opening to be inserted into the annular clamping groove (8).
6. A connector for a bottle blank according to claim 2, characterized in that: An embedding groove (9) is provided on the outer side wall of the arc-shaped pressing sheet (4); the clamping spring (5) is C-shaped and is embedded in the corresponding embedding groove (9) to prevent the clamping spring (5) from separating from the arc-shaped pressing sheet (4).
7. A connector for a bottle blank according to claim 6, characterized in that: There are at least two clamping springs (5), which are arranged separately along the length direction of the body (1).
8. A connector for a bottle blank according to claim 2, characterized in that: The middle part of the body (1) is recessed to form an annular positioning groove (10), and the top edge of the inner wall of the arc-shaped pressing plate (4) is raised to form a limiting strip (11), and the limiting strip (11) is embedded in the positioning groove (10) to limit the displacement of the arc-shaped pressing plate (4) along the length direction of the body (1).
9. The connector for a bottle blank according to claim 1, characterized in that: The main body (1) is provided with an axially penetrating through hole (6) in the middle thereof.
10. A bottle blowing machine using the connector according to any one of claims 1 to 9, comprising a frame and a conveying mechanism, a blank connecting mechanism, a heating mechanism, a bottle blowing mechanism and a bottle removing mechanism arranged on the frame, characterized in that: The conveying mechanism comprises an annular guide rail and a plug-in component which cyclically moves along the guide rail. The plug-in component receives the bottle blank (7) at the blank connection mechanism and obtains the bottle body after passing through the heating mechanism and the bottle blowing mechanism in sequence, so that the bottle body is separated from the plug-in component through the bottle removal mechanism.