Stretching structure of PET bottle blowing machine
By introducing stretching position and in-situ detection switches into the PET bottle blowing machine, combined with buffer brackets and adjusting nuts, the problem of uneven stretching of PET bottles is solved, achieving a high-precision and stable stretching process, which is suitable for efficient blow molding production.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-04-16
- Publication Date
- 2026-03-20
AI Technical Summary
The existing PET bottle stretching structure lacks precise stroke control, resulting in uneven stretching, insensitive or inaccurate detection devices, which affects the quality of preforms and production stability.
By employing a tensioning position detection switch and a tensioning in-situ detection switch, combined with a buffer bracket and an adjusting nut, precise stroke control and stable detection of the tensioning rod are achieved, ensuring the reliability of the tensioning action.
It achieves high-precision stretching of PET preforms, ensuring the stability and efficiency of the production process, and is suitable for high-efficiency blow molding production.
Smart Images
Figure CN224012945U_ABST
Abstract
Description
TECHNICAL FIELD
[0001] The utility model relates to PET bottle blowing machine technical field especially relates to a PET bottle blowing machine stretch structure. BACKGROUND
[0002] In the bottle blowing production process, the stretch forming of PET bottle embryo is a crucial process step. The traditional PET bottle stretch technology usually has problems such as low stretch precision and imperfect automatic control. In order to improve the production efficiency and the forming precision of bottle embryo, the bottle blowing machine needs to have a higher precision and more reliable stretch control device.
[0003] The existing PET bottle machine stretch structure usually stretches the bottle embryo by the cylinder pushing the stretch rod, but in the stretching process, when the cylinder pushes the stretch rod, due to the lack of accurate stroke control, it may cause the uneven stretching of the bottle embryo, thereby affecting the quality of the bottle embryo, and although some equipment adopts the detection device of the stretching stroke, these detection devices have problems such as insensitive response or large error, cannot real-time feedback the stretching state, and cause the unstable stretching process. UTILITY MODEL CONTENTS
[0004] In order to make up for the above shortcomings, the utility model provides a PET bottle blowing machine stretch structure, which aims at improving the lack of accurate stroke control in the prior art, which may cause uneven stretching of the bottle embryo, and the detection device has problems such as insensitive response or large error.
[0005] In order to achieve the above purpose, the utility model adopts the following technical scheme: a PET bottle blowing machine stretch structure, comprising a sealing cylinder seat and a stretching cylinder, the output end of the stretching cylinder is fixedly connected with a stretch rod clamping block, the stretch rod clamping block is fixedly connected with a detection stop iron, which is used to trigger a stretch to position detection switch and a stretch original position detection switch, the upper side of the sealing cylinder seat is fixedly connected with a sealing cylinder body, the upper side of the sealing cylinder body is provided with an adjusting nut, the outer part of the adjusting nut is fixedly connected with a sealing seat, the lower left side of the sealing cylinder seat is fixedly connected with a bumper support, the inner part of the bumper support is fixedly connected with a bumper body.
[0006] As a further description of the above technical scheme:
[0007] The stretch to position detection switch and the stretch original position detection switch are fixedly connected on the two sides of the outer part of the sealing cylinder seat respectively.
[0008] As a further description of the above technical scheme:
[0009] The adjusting nut rotates and moves along the adjusting screw rod.
[0010] As a further description of the above technical scheme:
[0011] The upper part of the sealing seat is provided with a sealing pad on both sides.
[0012] Further description of the above technical solution:
[0013] The stretching cylinder is a bidirectional cylinder.
[0014] Further description of the above technical solution:
[0015] The stretching-to-position detection switch and the stretching-original-position detection switch are respectively used for detecting the to-position and reset state of the stretching rod.
[0016] The utility model has the advantages of the following beneficial effects:
[0017] In the utility model, when the stretching cylinder is in the original position, the stretching rod clamping block contacts the buffer support, the stretching-original-position detection switch is triggered, the stretching cylinder starts to push the stretching rod clamping block and the connected stretching rod to move forward, drives the adjusting screw rod and the buffer support to move synchronously, the stroke of the stretching rod can be finely adjusted through the adjusting nut, the buffer body absorbs the impact force at the end of the stroke, when the detection stop iron triggers the stretching-to-position detection switch, it is confirmed that the stretching rod reaches the preset position, the stretching action is completed, the stretching cylinder is retracted to drive the stretching rod to return to the initial position, the buffer support contacts the buffer body again, the stretching-original-position detection switch is triggered, and preparation is made for the next stretching cycle, high-precision stretching of PET bottle preforms is realized, the detection switch ensures the reliability of the action, and it is suitable for efficient bottle blowing production. BRIEF DESCRIPTION OF DRAWINGS
[0018] Figure 1 The utility model provides a stretching structure diagram of PET bottle blowing machine stretching structure.
[0019] LEGEND:
[0020] 1, sealing pad; 2, sealing seat; 3, adjusting nut; 4, sealing cylinder body; 5, sealing cylinder seat; 6, buffer body; 7, stretching-to-position detection switch; 8, stretching rod clamping block; 9, detection stop iron; 10, stretching-original-position detection switch; 11, stretching cylinder; 12, adjusting screw rod; 13, buffer support. DETAILED DESCRIPTION
[0021] The technical solutions in the embodiments of the utility model will be clearly and completely described below with reference to the drawings in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by those skilled in the art without creative labor belong to the protection scope of the utility model.
[0022] Referring to Figure 1 The utility model provides a kind of embodiment provided by the utility model: a kind of PET bottle blowing machine stretch structure, including sealing cylinder base 5 and stretch cylinder 11, the output end of stretch cylinder 11 is fixedly connected with stretch rod clamping block 8, stretch rod clamping block 8 is fixedly connected with detection stop iron 9, for triggering stretch in place detection switch 7 and stretch original position detection switch 10, the upside of sealing cylinder base 5 is fixedly connected with sealing cylinder body 4, the upside of sealing cylinder body 4 is provided with adjusting nut 3, the outside of adjusting nut 3 is fixedly connected with sealing seat 2, the lower left side of sealing cylinder base 5 is fixedly connected with bumper bracket 13, the inside of bumper bracket 13 is fixedly connected with bumper body 6.
[0023] by stretch cylinder 11 is in original position, stretch rod clamping block 8 is contacted with bumper bracket 13, stretch original position detection switch 10 is triggered, stretch cylinder 11 starts to push stretch rod clamping block 8 and the stretch rod of connection and moves forward, drives adjusting screw rod 12 and bumper bracket 13 synchronous motion, the stroke of stretch rod can be fine-tuned by adjusting nut 3, bumper body 6 absorbs impact force at stroke end, when detection stop iron 9 triggers stretch in place detection switch 7, confirm that stretch rod reaches preset position, stretch action is completed, stretch cylinder 11 is retracted and drives stretch rod to return to initial position, bumper bracket 13 is contacted with bumper body 6 again, stretch original position detection switch 10 is triggered, prepare for next stretch cycle, play the role of being able to to PET bottle embryo high-precision stretch.
[0024] Referring to Figure 1 Stretch in place detection switch 7 and stretch original position detection switch 10 are fixedly connected on the two sides outside sealing cylinder base 5 respectively;Adjusting nut 3 can be rotated and moved along adjusting screw rod 12;The upper two sides of sealing seat 2 are provided with sealing pad 1;Stretch cylinder 11 is bidirectional cylinder;Stretch in place detection switch 7 and stretch original position detection switch 10 are respectively used for detecting the in-place and reset state of stretch rod.
[0025] By stretch in place detection switch 7 and stretch original position detection switch 10 being fixedly connected on the two sides outside sealing cylinder base 5, play the role of fixed support to stretch in place detection switch 7 and stretch original position detection switch 10;By adjusting nut 3 can be rotated and moved along adjusting screw rod 12, play the role of being used for adjusting the stroke length of stretch rod;By the upper two sides of sealing seat 2 are provided with sealing pad 1, play the role of enhancing the sealing property when mold is closed;By stretch cylinder 11 is bidirectional cylinder, play the role of improving the practicability of device;By stretch in place detection switch 7 and stretch original position detection switch 10, respectively for detecting the in-place and reset state of stretch rod, play the role of being used for accurate processing to PET bottle embryo.
[0026] Working principle: when using the device, the stretching cylinder 11 is in the original position, the stretching rod clamping block 8 is in contact with the buffer support 13, the stretching original position detection switch 10 is triggered, the device is confirmed to be ready, the sealing cylinder body 4 pushes the sealing seat 2 and the sealing pad 1 to close, ensuring the sealing of the mold, the stretching cylinder 11 is actuated to push the stretching rod clamping block 8 and the connected stretching rod to move forward, driving the adjusting screw 12 and the buffer support 13 to move synchronously, the travel of the stretching rod can be fine-tuned through the adjusting nut 3, ensuring the accuracy of the stretching length, the buffer body 6 absorbs the impact force at the end of the travel, protecting the stability of the structure, when the detection stopper 9 triggers the stretching to position detection switch 7, it is confirmed that the stretching rod reaches the preset position, the stretching action is completed, at this time, the PEI bottle embryo has been stretched to the required length, the stretching cylinder 11 is retracted to return the stretching rod to the initial position, the buffer support 13 contacts the buffer body 6 again, the stretching original position detection switch 10 is triggered, preparing for the next stretching cycle, realizing the high-precision stretching of the PET bottle embryo, the detection switch ensures the reliability of the action, and is suitable for high-efficiency bottle blowing production.
[0027] Finally, it should be pointed out that: the above only for the preferred embodiments of the utility model, and does not limit the utility model, although the utility model is described in detail with reference to the foregoing embodiments, for the person skilled in the art, it still can modify the technical scheme recorded in the foregoing each embodiment, or equivalent replacement to part of technical features, any modification, equivalent replacement, improvement etc. made within the spirit and principles of the utility model, should be contained in the protection scope of the utility model.
Claims
1. A stretching structure for a PET bottle blow molding machine, comprising a sealing cylinder seat (5) and a stretching cylinder (11), characterized in that: The output end of the stretching cylinder (11) is fixedly connected to a stretching rod block (8), which is fixedly connected to a detection stop (9) and is used to trigger the stretching in place detection switch (7) and the stretching in place detection switch (10). The upper side of the sealing cylinder seat (5) is fixedly connected to a sealing cylinder body (4), and the upper side of the sealing cylinder body (4) is provided with an adjusting nut (3). The outside of the adjusting nut (3) is fixedly connected to a sealing seat (2). The lower left side of the sealing cylinder seat (5) is fixedly connected to a buffer bracket (13), and the inside of the buffer bracket (13) is fixedly connected to a buffer body (6).
2. The stretching structure for a PET bottle blow molding machine according to claim 1, characterized in that: The stretching position detection switch (7) and the stretching position detection switch (10) are respectively fixedly connected to the outside of the sealing cylinder seat (5) on both sides.
3. The stretching structure for a PET bottle blow molding machine according to claim 1, characterized in that: The adjusting nut (3) rotates and moves along the adjusting screw (12).
4. The stretching structure for a PET bottle blow molding machine according to claim 1, characterized in that: Sealing pads (1) are provided on both sides of the upper part of the sealing seat (2).
5. The stretching structure of a PET bottle blow molding machine according to claim 1, characterized in that: The stretching cylinder (11) is a two-way cylinder.
6. The stretching structure of a PET bottle blow molding machine according to claim 1, characterized in that: The tensioning position detection switch (7) and the tensioning in-situ detection switch (10) are used to detect the position and reset states of the tensioning rod, respectively.