Suction nozzle assembly and bottle blank taking-out device
By using a suction nozzle assembly that clamps the preform to the inner wall of the bottle, the problem of high clamping precision requirements in the prior art is solved by combining negative pressure suction and gas expansion, thus achieving stable and non-destructive removal of the preform and improving production efficiency.
Patent Information
- Application Number
- CN202520111577.3
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-01-16
- Publication Date
- 2026-01-16
- Estimated Expiration
- 2035-01-16
AI Technical Summary
Existing preform removal devices require high positional accuracy during clamping, which can easily lead to clamping deviations, causing damage to the preform or failure to remove it, thus affecting production efficiency.
The nozzle assembly clamps the preform from the inner wall of the bottle, and the expansion assembly presses against the inner wall of the preform to remove it. The combination of negative pressure suction and gas expansion achieves stable and non-destructive clamping.
This reduces the requirements for positional accuracy, enabling stable, non-destructive clamping and smooth removal of the preform, thus improving production efficiency.
Smart Images
Figure CN223802604U_ABST
Abstract
Description
Technical Field
[0001] This utility model belongs to the technical field of preform removal devices, specifically relating to a suction nozzle assembly and a preform removal device. Background Technology
[0002] In the bottle preform injection molding process, molten molding material is first injected into the preform mold to form a bottle preform. The preform is initially cooled and shaped in the preform mold. The preform is then removed from the preform mold by a preform transfer device and transferred to a post-mold cooling device for further cooling. Finally, the preform is removed from the transfer device by an extraction device. This external cooling method can reduce the time that the preform occupies the preform mold cavity and improve the production efficiency of the bottle preform.
[0003] Existing preform removal devices typically use a suction nozzle to pick up preforms from a transfer device, while a clamping device holds the preform in place by a support ring on its outer surface. To ensure that the clamping device can accurately clamp the preform in place, the preform must be picked up precisely, requiring high positional accuracy. If the movement control of the preform removal device deviates, the clamping device may clamp the preform at the mouth or body of the preform, potentially damaging it and causing removal failure, thus affecting the production process. Utility Model Content
[0004] In order to overcome at least some of the shortcomings of the prior art, the present invention provides a suction nozzle assembly and a preform removal device that clamps the preform from the inner wall of the preform for preform removal.
[0005] One of the technical solutions provided by this utility model is: a suction nozzle assembly, including a suction nozzle and an expansion assembly; the suction nozzle has an axially penetrating pressure channel inside, and the outer wall of the suction nozzle includes an installation section, a channel section and a main body section in sequence along the axial direction; the expansion assembly has an expansion space inside, and the expansion assembly is sleeved on the outer wall of the channel section, with an upper air passage connecting the two to the expansion space; when air is introduced into the expansion space through the upper air passage, the expansion assembly expands and presses against the inner wall of the preform to suck up the preform; when air is drawn out of the expansion space through the upper air passage, the expansion space contracts to release the preform.
[0006] One specific technical solution is as follows: the expansion assembly includes a capsule; the channel segment includes an axial channel segment and a connecting segment in sequence along the axial direction; one end of the capsule is folded inward and sleeved on the outer wall of the connecting segment, and the expansion space is formed inside the capsule after folding; the other end of the capsule is sleeved on the outer wall of the axial channel segment, and the two form an upper air passage that communicates with the expansion space.
[0007] Further, the outer wall of the axial channel section has at least one axial flat surface formed by parallel cutting along the axial direction of the suction nozzle; and the other end of the capsule and the axial flat surface form the upper air passage connected with the expansion space.
[0008] Further, the expansion assembly further comprises an upper retaining ring and a lower retaining ring; one end of the capsule is sleeved on the outer wall of the connecting section through the upper retaining ring, and the other end of the capsule is sleeved on the outer wall of the axial channel section through the lower retaining ring.
[0009] Further, the outer wall of the connecting section and the outer wall of the axial channel section are each provided with a circumferential clamping position for clamping and sealing the capsule; the inner wall of the lower retaining ring and the inner wall of the upper retaining ring are each provided with a circumferential protrusion matched with the circumferential clamping position, and the sealing of the end of the capsule is realized based on the cooperation of the circumferential protrusion and the circumferential clamping position.
[0010] As another specific technical solution, the expansion assembly comprises a suction nozzle sleeve and a capsule; the channel section sequentially comprises an axial channel section, an upper annular channel section and a connecting section along the axial direction; the upper end of the suction nozzle sleeve is sleeved on the outer wall of the connecting section, the middle part of the suction nozzle sleeve and the upper annular channel section form an upper annular air passage, and the lower end of the suction nozzle sleeve is sleeved on the outer wall of the axial channel section and forms an upper axial air passage connected with the upper annular air passage; one end of the capsule is inwardly folded and sleeved on the outer wall of the upper end of the suction nozzle sleeve, the capsule forms the expansion space in the interior after being folded, and the other end of the capsule is sleeved on the outer wall of the lower end of the suction nozzle sleeve; the suction nozzle sleeve has at least one air passage hole connected with the upper annular air passage and the expansion space; the upper axial air passage, the upper annular air passage and the air passage hole form the upper air passage connected with the expansion space.
[0011] Further, the outer wall of the axial channel section has at least one axial flat surface formed by parallel cutting along the axial direction of the suction nozzle; and the lower end of the suction nozzle sleeve and the axial flat surface form the upper axial air passage connected with the upper annular air passage.
[0012] Further, the expansion assembly further comprises an upper retaining ring and a lower retaining ring; one end of the capsule is sleeved on the outer wall of the upper end of the suction nozzle sleeve through the upper retaining ring, and the other end of the capsule is sleeved on the outer wall of the lower end of the suction nozzle sleeve through the lower retaining ring.
[0013] Further, the outer wall of the connecting section and the outer wall of the axial channel section are each provided with a circumferential clamping position for clamping and sealing the capsule; the inner wall of the lower retaining ring and the inner wall of the upper retaining ring are each provided with a circumferential protrusion matched with the circumferential clamping position, and the sealing of the end of the capsule is realized based on the cooperation of the circumferential protrusion and the circumferential clamping position.
[0014] Based on the above-mentioned technical scheme of the nozzle assembly, the utility model further provides another technical scheme, which is a bottle blank taking-out device, comprising a taking-out plate and a plurality of nozzle assemblies as mentioned above, the mounting section and part of the channel section are mounted in the mounting hole positions of the taking-out plate, part of the upper air passage is located in the mounting hole positions of the taking-out plate, or part of the channel section and the mounting hole positions form a lower air passage communicating with the upper air passage; the taking-out plate is further provided with a first air passage and a second air passage, the first air passage communicates with a plurality of pressure channels in the mounting hole positions, and the second air passage communicates with a plurality of upper air passages or lower air passages in the mounting hole positions.
[0015] The nozzle assembly of the utility model, when taking out the blank, enters the inside of the bottle blank, the pressure channel is connected with the negative pressure air source, negative pressure is generated in the pressure channel to suck the bottle blank, gas is introduced into the expansion space in the expansion assembly, the expansion assembly is expanded and pressed against the inner wall of the bottle blank, so that the effect of clamping the bottle blank is achieved; the expansion assembly only needs to act on the inner surface of the blank opening, the action precision requirement is low, the clamping force of the expansion assembly against the inner surface of the bottle blank and the suction force generated by the negative pressure of the pressure channel jointly act, the smaller clamping force can complete the taking-out of the bottle blank, the stable and lossless clamping of the bottle blank is realized, and the smooth taking-out of the bottle blank is ensured. BRIEF DESCRIPTION OF DRAWINGS
[0016] Figure 1 It is an internal structure schematic view of the nozzle assembly of the embodiment one in the contraction state;
[0017] Figure 2 It is an internal structure schematic view of the nozzle assembly of the embodiment one in the expansion state;
[0018] Figure 3 It is a perspective view of the nozzle of the embodiment one;
[0019] Figure 4 It is Figure 1 It is an enlarged view of the A part;
[0020] Figure 5 It is Figure 2 It is an enlarged view of the B part;
[0021] Figure 6 It is an internal structure schematic view of the nozzle assembly of the embodiment two in the contraction state;
[0022] Figure 7 It is an internal structure schematic view of the nozzle assembly of the embodiment two in the expansion state;
[0023] Figure 8 It is a perspective view of the nozzle of the embodiment two;
[0024] Figure 9 for Figure 7 Enlarged view of section C;
[0025] Figure 10 This is a schematic diagram of the internal structure of the extraction device in Embodiment 3;
[0026] Figure 11 for Figure 10 Enlarged view of section D. Detailed Implementation
[0027] 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.
[0028] It should be noted that if any directional indication (such as up, down, left, right, front, back, top, bottom, inside, outside, vertical, horizontal, longitudinal, counterclockwise, clockwise, circumferential, radial, axial, etc.) is involved in the embodiments of this utility model, the directional indication is only used to explain the relative positional relationship and movement of each component in a certain specific posture (as shown in the figure). If the specific posture changes, the directional indication will also change accordingly.
[0029] Furthermore, if the embodiments of this utility model involve descriptions such as "first" or "second," such descriptions are for descriptive purposes only and should not be construed as indicating or implying their relative importance or implicitly specifying the number of technical features indicated. Therefore, features defined with "first" or "second" may explicitly or implicitly include at least one of those features. Additionally, the technical solutions of the various embodiments can be combined with each other, but this must be based on the ability of those skilled in the art to implement them. When the combination of technical solutions is contradictory or impossible to implement, such a combination of technical solutions should be considered non-existent and not within the scope of protection claimed by this utility model. Example 1
[0030] like Figures 1 to 5As shown, the embodiment discloses a nozzle assembly, which comprises a nozzle 1 and an expansion assembly 2 abutting against the inner wall of a bottle blank when expanded, the inside of the nozzle 1 is provided with a pressure channel 11 penetrating in the axial direction, the outer wall of the nozzle 1 comprises, in sequence from bottom to top in the axial direction, a mounting section 12, a channel section 13 and a main body section 14, the inside of the expansion assembly 2 is provided with an expansion space 21 into which gas can be introduced to expand in the circumferential direction, the expansion assembly 2 is sleeved on the outer wall of the channel section 13 and forms an upper air passage 100 communicating with the expansion space 21 between the two; when air is introduced into the expansion space 21 through the upper air passage 100, the expansion assembly 2 expands and abuts against the inner wall of the bottle blank to suck the bottle blank; when air is extracted from the expansion space through the upper air passage 100, the expansion space 21 shrinks and the expansion assembly 2 is separated from the inner wall of the bottle blank to release the bottle blank.
[0031] Specifically, the expansion assembly 2 comprises a capsule 25, an upper stop ring 24 and a lower stop ring 23; the channel section 13 comprises, in sequence in the axial direction, an axial channel section 132 and a connecting section 134; one end of the capsule 25 is inwardly folded and sleeved on the outer wall of the connecting section 134, the inside of the capsule 25 forms the expansion space 21 after being folded, and the other end of the capsule 25 is sleeved on the outer wall of the axial channel section 132 and forms the upper air passage 100 communicating with the expansion space 21 between the two. The outer wall of the axial channel section 132 has at least one axial flat surface 1321 formed by parallel cutting in the axial direction of the nozzle; the upper air passage 100 communicating with the expansion space 21 is formed between the other end of the capsule 25 and the axial flat surface 1321, one end of the capsule 25 is sleeved on the outer wall of the connecting section 134 through the upper stop ring 24, and the other end of the capsule 25 is sleeved on the outer wall of the axial channel section 132 through the lower stop ring 23; the outer wall of the connecting section 134 and the outer wall of the axial channel section 132 are both provided with a circumferential clamping position 222 for clamping and sealing the capsule 25, the inner wall of the lower stop ring 23 and the upper stop ring 24 are both provided with a circumferential protrusion matched with the circumferential clamping position 222, and the sealing of the end of the capsule 25 is realized based on the cooperation of the circumferential protrusion and the circumferential clamping position 222. A first blocking step 152 for limiting the axial expansion of the capsule is arranged between the connecting section 134 and the main body section 14. Embodiment two
[0032] The specific implementation content of the embodiment is substantially the same as that of embodiment one, and the difference lies in that Figures 6 to 9As shown, the inflation assembly 2 comprises a nozzle sleeve 22, a lower stop ring 23, an upper stop ring 24 and a capsule 25; the outer wall of the channel section 13 comprises, from bottom to top along the axial direction, a lower annular channel section 131, an axial channel section 132, an upper annular channel section 133 and a connecting section 134 in sequence, the inflation assembly 2 is sleeved on the outer wall of the channel section 13 of the nozzle 1, the outer wall of the axial channel section 132 has at least one axial flat surface 1321 formed by parallel cutting along the axial direction of the nozzle 1; the lower end of the nozzle sleeve 22 and the axial flat surface 1321 form an upper axial air passage 3 which is communicated with the upper annular air passage 4. The inner wall of the inflation assembly 2 and the outer wall of the upper annular channel section 133 are configured to form the upper annular air passage 4 which is communicated with the upper axial air passage 3, the inflation assembly 2 is provided with an air vent hole 221 which is communicated with the upper annular air passage 4 and the inflation space 21 respectively, and the upper axial air passage 3, the upper annular air passage 4 and the air vent hole 221 form an upper air passage 100 which is communicated with the inflation space 21.
[0033] When the blank taking operation is performed, the nozzle assembly enters the inside of the bottle blank, the pressure channel 11 is connected to the negative pressure gas source, and the negative pressure is generated in the pressure channel 11 to suck the bottle blank; later or simultaneously, the gas is introduced into the inflation space 21 inside the inflation assembly 2 to make the inflation assembly 2 expand and press against the inner wall of the bottle blank, thereby achieving the effect of clamping the bottle blank; the inflation assembly 2 only needs to act on the inner surface of the blank opening, and the action precision requirement is relatively low, the clamping force of the inflation assembly 2 acting on the inner surface of the bottle blank and the suction force generated by the negative pressure of the pressure channel 11 jointly act, and the smaller clamping force can complete the taking of the bottle blank, realize the stable and lossless clamping of the bottle blank, and ensure the smooth taking of the bottle blank.
[0034] When the bottle blank is released, the inflation space 21 inside the inflation assembly 2 discharges the gas to make the inflation assembly 2 shrink and separate from the inner wall of the bottle blank, the effect of clamping the bottle blank is released, the pressure channel 11 is connected to the positive pressure gas source, and the pressure channel 11 blows the gas to release the bottle blank; in some embodiments, the axis of the bottle blank is in the vertical direction, and when the bottle blank is released, the inflation assembly 2 only needs to separate from the inner wall of the bottle blank after the gas pressure of the pressure channel 11 is restored to the normal pressure, thereby achieving the release of the bottle blank.
[0035] The inner walls of both ends of the nozzle sleeve 22 are sleeved on the outer wall of the connecting section 134 and the outer wall of the axial channel section 132 respectively, the upper end of the capsule 25 is inwardly folded, the inner diameter thereof is shrunk by the upper stop ring 24 and is fixed to the outer wall of the upper end of the nozzle sleeve 22, the lower end of the capsule 25 is shrunk by the lower stop ring 23 and is fixed to the outer wall of the lower end of the nozzle sleeve 22, after being fixed, the capsule 25 forms an air bag which circumferentially surrounds the nozzle sleeve 22, the air bag and the nozzle sleeve 22 are connected to form the inflation space 21, and the air vent hole 221 is arranged on the nozzle sleeve 22.
[0036] Further, the outer wall of the suction nozzle 1 is further provided with a blocking step, the connecting section 134 and the main body section 14 are separated by the blocking step, the blocking step includes a second blocking step 151 for axially positioning the installation of the suction nozzle sleeve 22 and a first blocking step 152 for limiting the axial expansion of the air bag, under the limiting effect of the first blocking step 152, the air bag expands as much as possible in the radial direction, and the clamping effect on the bottle blank is better.
[0037] Further, the outer wall of the suction nozzle sleeve 22 is provided with a circumferential clamping position 222, and the capsule 25 can be clamped into the circumferential clamping position 222, so that the expansion space 21 has better air tightness. In order to further improve the air tightness of the expansion space 21, a circumferential protrusion matched with the circumferential clamping position 222 can be arranged on the inner wall of the lower blocking ring 23 and the upper blocking ring 24, so that the capsule 25 can be completely clamped into the circumferential clamping position 222. Embodiment three
[0038] As shown in Figure 10 and Figure 11 Based on the above disclosed suction nozzle assembly, the present embodiment further discloses a bottle blank taking-out device, which comprises a taking-out plate 5 and a plurality of the above-mentioned suction nozzle assemblies, the mounting section 12 and part of the channel section 13 are mounted in the mounting hole position 51 of the taking-out plate 5, and part of the upper air passage 100 is located in the mounting hole position 51 of the taking-out plate 5; or, part of the channel section 13 and the mounting hole position 51 form a lower air passage 200 that communicates with the upper air passage 100; the taking-out plate is further provided with a first air passage 52 and a second air passage 53, the first air passage 52 communicates with the plurality of pressure passages 11 in the plurality of mounting hole positions 51, and the second air passage 53 communicates with the plurality of upper air passages 100 or lower air passages 200 in the plurality of mounting hole positions 51.
[0039] Specifically, the mounting section 12, the lower annular passage section 131 and the partial axial passage section 132 are mounted in the mounting hole positions 51 of the take-out plate 5, the lower annular passage section 131 and the mounting hole positions 51 form the lower annular air passage 6, the lower part of the axial passage section 132 and the mounting hole positions 51 form the lower axial air passage 7, the lower axial air passage 7 is communicated with the lower annular air passage 6 and the upper axial air passage 3 respectively, the take-out plate 5 is further provided with a first air channel 52 and a second air channel 53, the first air channel 52 is communicated with the first air source outside, the second air channel 53 is communicated with the second air source outside, and the second air channel 53 is sequentially communicated with a plurality of lower annular air passages 6 in the plurality of mounting hole positions 51. When the bottle blank is sucked by the bottle blank taking device, the first air source generates negative air pressure, and the bottle blank is sucked by sequentially inhaling air through the pressure passage 11 and the first air channel 52, the second air source generates positive air pressure, and the gas is communicated into the expansion space 21 through the second air channel 53, the lower annular air passage 6, the lower axial air passage 7, the upper axial air passage 3, the upper annular air passage 4 and the air hole 221, so that the air bag is inflated and abuts against the inner wall of the bottle blank blank mouth, so that the suction nozzle assembly is clamped on the inner wall of the bottle blank blank mouth; when the bottle blank is released by the bottle blank taking device, the first air source generates positive air pressure, and the bottle blank is blown out by sequentially blowing air through the first air channel 52 and the pressure passage 11, the second air source generates negative air pressure, and the gas in the expansion space 21 is discharged through the air hole 221, the upper annular air passage 4, the upper axial air passage 3, the lower axial air passage 7, the lower annular air passage 6 and the second air channel 53, so that the air bag is contracted and separated from the inner wall of the bottle blank to release the bottle blank.
[0040] Specifically, the outer wall of the mounting section 12 is provided with a sealing ring groove 121, and the sealing ring 8 is mounted in the sealing ring groove 121, when the mounting section 12 is connected with the mounting hole positions 51 of the take-out plate 5, the sealing ring 8 realizes the air-tight separation between the pressure passage 11 communicated with the first air channel 52 and the lower annular air passage 6 communicated with the second air channel 53.
[0041] The above only describes the preferred embodiments of the present application, and any technical solutions with basically the same means to achieve the purpose of the present application belong to the protection scope of the present application.
Claims
1. A mouthpiece assembly, characterized by: The suction nozzle and the inflation assembly are provided. The suction nozzle is internally provided with a pressure channel penetrating in the axial direction, and the outer wall of the suction nozzle comprises an installation section, a channel section and a main body section in sequence in the axial direction. The inflation assembly is internally provided with an inflation space, and the inflation assembly is sleeved with the outer wall of the channel section and forms an upper air passage connected with the inflation space. When the inflation space is ventilated through the upper air passage, the inflation assembly is inflated and pressed against the inner wall of the bottle blank to suck the bottle blank; when the inflation space is exhausted through the upper air passage, the inflation space is contracted to release the bottle blank.
2. A mouthpiece assembly according to claim 1, wherein: The inflation assembly comprises a capsule; The channel section comprises an axial channel section and a connecting section in sequence in the axial direction. One end of the capsule is inwardly folded and sleeved with the outer wall of the connecting section, and the inflation space is formed in the interior of the capsule after being folded, and the other end of the capsule is sleeved with the outer wall of the axial channel section and forms the upper air passage connected with the inflation space between the two.
3. A mouthpiece assembly according to claim 2, wherein: The outer wall of the axial channel section has at least one axial flat surface formed by parallel cutting along the axial direction of the suction nozzle; The other end of the capsule and the axial flat surface form the upper air passage connected with the inflation space.
4. A mouthpiece assembly according to claim 2, wherein: The inflation assembly further comprises an upper stop ring and a lower stop ring; One end of the capsule is sleeved with the outer wall of the connecting section through the upper stop ring, and the other end of the capsule is sleeved with the outer wall of the axial channel section through the lower stop ring.
5. A mouthpiece assembly according to claim 4, wherein: The outer wall of the connecting section and the outer wall of the axial channel section are both provided with a circumferential clamping position for sealingly clamping the capsule; The inner wall of the lower stop ring and the upper stop ring are both provided with a circumferential protrusion matched with the circumferential clamping position, and the sealing of the end of the capsule is realized based on the cooperation of the circumferential protrusion and the circumferential clamping position.
6. A mouthpiece assembly according to claim 1, wherein: The inflation assembly comprises a nozzle sleeve and a capsule; The channel section comprises an axial channel section, an upper annular channel section and a connecting section in sequence in the axial direction. The upper end of the nozzle sleeve is sleeved with the outer wall of the connecting section, the upper annular air passage is formed between the middle part of the nozzle sleeve and the upper annular channel section, and the lower end of the nozzle sleeve is sleeved with the outer wall of the axial channel section and forms the upper axial air passage connected with the upper annular air passage. One end of the capsule is inwardly folded and sleeved with the upper end outer wall of the nozzle sleeve, and the inflation space is formed in the interior of the capsule after being folded, and the other end of the capsule is sleeved with the lower end outer wall of the nozzle sleeve. The nozzle sleeve has at least one ventilation hole communicating the upper annular air passage and the inflation space; The upper axial air passage, the upper annular air passage and the ventilation hole form the upper air passage connected with the inflation space.
7. A mouthpiece assembly according to claim 6, wherein: The outer wall of the axial channel section has at least one axial flat surface formed by parallel cutting along the axial direction of the suction nozzle; The lower end of the nozzle sleeve and the axial flat surface form the upper axial air passage connected with the upper annular air passage.
8. A mouthpiece assembly according to claim 6, wherein: The inflation assembly further comprises an upper stop ring and a lower stop ring; One end of the capsule is sleeved with the upper end outer wall of the nozzle sleeve through the upper stop ring, and the other end of the capsule is sleeved with the lower end outer wall of the nozzle sleeve through the lower stop ring.
9. A mouthpiece assembly according to claim 8, wherein: The upper end outer wall of the mouthpiece sleeve and the lower end outer wall of the mouthpiece sleeve are both provided with a circumferential clamping position for clamping the blister; The inner wall of the lower blocking ring and the upper blocking ring are both provided with a circumferential protrusion matched with the circumferential clamping position, and the sealing of the end of the blister is realized based on the cooperation between the circumferential protrusion and the circumferential clamping position.
10. A bottle blank extraction apparatus characterized by: The extraction plate and a plurality of the mouthpiece assemblies as claimed in any one of claims 1-9 are included, the mounting section and the channel section of the part are mounted in the mounting hole position of the extraction plate, the upper air passage of the part is located in the mounting hole position of the extraction plate, or the channel section of the part and the mounting hole position form a lower air passage communicating with the upper air passage; The first air passage and the second air passage are further arranged in the extraction plate, the first air passage is communicated with a plurality of pressure channels in the plurality of mounting hole positions, and the second air passage is communicated with a plurality of upper air passages or lower air passages in the plurality of mounting hole positions.