Positioning pushing device and pipe shrinking machine

Abstract

The utility model relates to the technical field of bicycle manufacturing, in particular to a positioning material pushing device and a pipe shrinking machine. The positioning pushing device comprises a positioning push rod, a power part, a connecting structure and an in-place detector, one end of the positioning push rod is used for stretching into a contracted pipe die cavity of the contracted pipe machine to make contact with a contracted pipe, the power part is arranged at the other end of the positioning push rod, and the positioning push rod is connected with the power part through the connecting structure. The positioning push rod can rotate relative to the power piece and the connecting structure, the in-place detector is used for detecting whether the positioning push rod makes contact with the contracted pipe or not, and the power piece pushes the positioning push rod after making contact with the contracted pipe so that the positioning push rod can push the contracted pipe out of the pipe contracting machine. And the positioning material pushing device can enable the contracted pipe to retreat from the pipe contracting machine after detecting that the contracted pipe is machined to the preset length, the machining length of the contracted pipe is guaranteed, the step of cutting the contracted pipe is omitted, and the machining cost is reduced.

Description

Technical Field

[0001] The utility model relates to the technical field of bicycle manufacturing, in particular to a positioning and pushing device and a tube shrinking machine. Background Art

[0002] Currently, some bicycle tubes require shrinking. During this process, the tubes are pushed forward from the back. Due to the inconsistent extension of the tubes during shrinking, the lengths of the shrinking sections vary, failing to meet quality requirements. To ensure consistent lengths after processing, trimming is typically required, increasing manufacturing costs.

[0003] Therefore, a positioning and pushing device is urgently needed to solve the above technical problems. Utility Model Content

[0004] The purpose of the utility model is to provide a positioning pushing device and a tube shrinking machine, which can effectively control the length of the tube when shrinking, so as to ensure that the length of the tube after shrinking is consistent, reduce the processing steps of the tube, and reduce production costs.

[0005] To achieve this purpose, the present invention adopts the following technical solutions:

[0006] In a first aspect, a positioning and pushing device is provided for positioning and pushing a shrink tube in a shrinking machine, comprising:

[0007] a positioning push rod, one end of which is used to extend into the tube shrinking mold cavity of the tube shrinking machine to contact the shrinking tube;

[0008] A power member is provided at the other end of the positioning push rod;

[0009] a connecting structure, wherein the positioning push rod is connected to the power member via the connecting structure, and the positioning push rod is capable of rotating relative to the power member and the connecting structure;

[0010] The in-position detector is used to detect whether the positioning push rod is in contact with the shrink tube. After the power component obtains that the positioning push rod is in contact with the shrink tube, it pushes the positioning push rod so that the positioning push rod pushes the shrink tube out of the shrinking machine.

[0011] As an optimal technical solution for the above-mentioned positioning and pushing device, the connecting structure includes a first support body, a second support body, a connecting piece and a fixed shaft, the connecting piece is arranged between the first support body and the second support body, the first support body and the second support body are arranged opposite to each other, one of the first support body and the second support body is fixedly connected to the connecting piece, and the other is slidably connected to the connecting piece, one of the power member and the fixed shaft is fixedly connected to the first support body, and the other is fixedly connected to the second support body, the fixed shaft is also fixedly connected to the positioning push rod, and the in-place detector is installed on the first support body and the second support body.

[0012] As a preferred technical solution of the above-mentioned positioning and pushing device, the connecting structure further includes a reset member, which is sleeved on the connecting member and respectively abuts against the first support body and the second support body.

[0013] As a preferred technical solution of the above-mentioned positioning and pushing device, the reset member includes a spring, and two ends of the spring respectively abut against the first support body and the second support body.

[0014] As an optimal technical solution for the above-mentioned positioning and pushing device, the connecting part includes a bolt and a nut, one end of the bolt is fixedly connected to one of the first support body and the second support body, and the other end of the bolt passes through the other of the first support body and the second support body and is threadedly connected to the nut.

[0015] As a preferred technical solution of the above-mentioned positioning and pushing device, the fixed shaft is installed on the first support body or the second support body through a bearing.

[0016] As a preferred technical solution of the above-mentioned positioning and pushing device, the fixed shaft driving shaft tube is threadedly connected to the positioning push rod.

[0017] As an optimal technical solution for the above-mentioned positioning and pushing device, the in-place detector includes a limit switch, and the limit switch has a first contact and a second contact, and the first contact and the second contact are respectively arranged on the side walls opposite to the first support body and the second support body, and the first contact and the second contact can contact each other.

[0018] As a preferred technical solution of the above-mentioned positioning and pushing device, the power member and the connecting structure are fixedly connected via a universal coupling.

[0019] In the second aspect, a tube shrinking machine is provided, comprising a tube shrinking machine body and a positioning and pushing device as described in any of the above schemes, wherein the tube shrinking machine body has a tube shrinking mold cavity and a through-hole, and one end of the positioning push rod extends into the tube shrinking mold cavity through the through-hole.

[0020] The utility model has at least the following beneficial effects:

[0021] The positioning push rod extends into a fixed position point in the tube shrinking mold cavity. When the positioning push rod contacts the tube shrinking, it indicates that the tube shrinking is completed. After the in-place detector detects that the tube shrinking is in contact with the positioning push rod, the power component obtains the contact information and works to push the positioning push rod to move in the direction of tube shrinking, thereby withdrawing the tube from the tube shrinking machine to avoid the tube shrinking being processed further and causing it to be longer. The positioning pusher device can withdraw the tube from the tube shrinking machine after detecting that the tube shrinking has been processed to a preset length, thereby ensuring the processing length of the tube shrinking, eliminating the step of cutting the tube shrinking, and reducing processing costs. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the following is a brief introduction to the drawings required for use in the description of the embodiments of the present invention. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on the contents of the embodiments of the present invention and these drawings without paying any creative work.

[0023] Figure 1 A top view of the positioning and pushing device provided in an embodiment of the utility model;

[0024] Figure 2 for Figure 1 A partial enlarged view of point A in the middle;

[0025] Figure 3 A side view of the positioning and pushing device provided in an embodiment of the present utility model.

[0026] In the picture:

[0027] 1. Positioning push rod; 101. Push block; 2. Power component; 3. In-position detector; 31. First contact; 32. Second contact; 4. First support body; 5. Second support body; 6. Universal joint; 7. Fixed shaft; 8. Reset member; 9. Bolt; 10. Nut; 11. Support frame; 12. Base plate; 13. Guide rod; 14. Drag chain; 15. Bearing. DETAILED DESCRIPTION

[0028] The present invention will be further described in detail below with reference to the accompanying drawings and examples. It should be understood that the specific embodiments described herein are intended only to illustrate the present invention and are not intended to limit the present invention. It should also be noted that, for ease of description, the accompanying drawings only illustrate portions relevant to the present invention, not all of its components.

[0029] In the description of this utility model, unless otherwise specified or limited, the terms "connected," "connect," and "fixed" should be understood in a broad sense. For example, they can refer to fixed connection, detachable connection, or integration; mechanical connection or electrical connection; direct connection or indirect connection through an intermediate medium; internal communication between two components or interaction between two components. Those skilled in the art will understand the specific meanings of the above terms in this utility model based on the specific circumstances.

[0030] In the present invention, unless otherwise expressly specified or limited, a first feature being "above" or "below" a second feature may include the first and second features being in direct contact, or may include the first and second features being in contact not directly but through another feature between them. Moreover, a first feature being "above," "above," and "above" a second feature may include the first feature being directly above or obliquely above the second feature, or may simply mean that the first feature is higher in level than the second feature. A first feature being "below," "below," and "below" a second feature may include the first feature being directly below or obliquely below the second feature, or may simply mean that the first feature is lower in level than the second feature.

[0031] In the description of this embodiment, the terms "upper," "lower," "right," and other orientations or positional relationships are based on the orientations or positional relationships shown in the accompanying drawings and are intended solely for ease of description and simplified operation. They do not indicate or imply that the devices or components referred to must have a specific orientation, be constructed, or operate in a specific orientation. Therefore, they should not be construed as limitations on the present invention. Furthermore, the terms "first" and "second" are used solely for descriptive purposes and have no special meaning.

[0032] like Figures 1 to 3 As shown, the utility model provides a positioning and pushing device, which is used to position and push the shrink tube in the shrinking machine, including a positioning push rod 1, a power piece 2, a connecting structure and an in-place detector 3. One end of the positioning push rod 1 is used to extend into the shrink tube mold cavity of the shrinking machine to contact the shrink tube, and the power piece 2 is arranged at the other end of the positioning push rod 1. The positioning push rod 1 and the power piece 2 are connected by a connecting structure. The positioning push rod 1 can rotate relative to the power piece 2 and the connecting structure. The in-place detector 3 is used to detect whether the positioning push rod 1 is in contact with the shrink tube. After the power piece 2 obtains that the positioning push rod 1 is in contact with the shrink tube, it pushes the positioning push rod 1 so that the positioning push rod 1 pushes the shrink tube out of the shrinking machine.

[0033] The positioning push rod 1 extends into a fixed position point in the tube shrinking mold cavity. When the positioning push rod 1 contacts the tube shrinking, it indicates that the tube shrinking is completed. After the in-place detector 3 detects that the tube shrinking is in contact with the positioning push rod 1, the power part 2 obtains the contact information and works to push the positioning push rod 1 to move in the tube shrinking direction, thereby withdrawing the tube shrinking machine, avoiding the tube shrinking from being processed further and causing it to be longer in length. The positioning pusher device can withdraw the tube shrinking machine after detecting that the tube shrinking has been processed to a preset length, thereby ensuring the processing length of the tube shrinking, eliminating the step of cutting the tube shrinking, and reducing processing costs.

[0034] Specifically, the connection structure includes a first support body 4, a second support body 5, a connecting member 6, and a fixed shaft 7, wherein the first support body 4 and the second support body 5 provide support for the connecting member 6, the fixed shaft 7, and the positioning push rod 1. The connecting member 6 is arranged between the first support body 4 and the second support body 5. The first support body 4 and the second support body 5 are arranged opposite to each other, thereby ensuring that the connecting member 6 is arranged between the first support body 4 and the second support body 5 and the first support body 4 and the second support body 5 are parallel to each other. Specifically, one of the first support body 4 and the second support body 5 is fixedly connected to the connecting member 6, and the other is slidably connected to the connecting member 6. One of the power member 2 and the fixed shaft 7 is fixedly connected to the first support body 4, and the other is fixedly connected to the second support body 5. The fixed shaft 7 is also fixedly connected to the positioning push rod 1. The in-position detector 3 is installed on the first support body 4 and the second support body 5. The first support body 4 and the second support body 5 can move under the action of the connecting member 6, and the in-position detector 3 detects whether the first support body 4 or the second support body 5 is in position according to the movement of the first support body 4 or the second support body 5.

[0035] In order to facilitate the positioning push rod 1 to push the shrink tube, the positioning push rod 1 is provided with a push block 101 at one end facing the shrink tube, and the area of ​​the working surface of the push block 101 is larger than the area of ​​the longitudinal section of the positioning push rod 1. The longitudinal section is a section perpendicular to the axial direction of the positioning push rod 1, that is,

[0036] Furthermore, the connection structure also includes a reset member 8, which is sleeved on the connection member 6 and respectively abuts against the first support body 4 and the second support body 5. For example, the reset member 8 includes a spring, and the two ends of the spring abut against the first support body 4 and the second support body 5 respectively. When the first support body 4 and the second support body 5 move in position, the spring is compressed until the in-place detector 3 detects the information, and then the power member 2 works to push the first support body 4 and the second support body 5 to move toward the shrink tube mold cavity. At this time, the spring is always in a compressed state. When the power member 2 drives the first support body 4 and the second support body 5 to retract, the spring recovers to its original length under the action of its own restoring force and the movable first support body 4 or the second support body 5.

[0037] In some embodiments, the connecting member 6 includes a bolt 9 and a nut 10, one end of the bolt 9 is fixedly connected to one of the first support body 4 and the second support body 5, and the other end of the bolt 9 passes through the other of the first support body 4 and the second support body 5 and is threadedly connected to the nut 10. For example, one end of the bolt 9 is fixedly connected to the second support body 5, and the other end of the bolt 9 passes through the first support body 4 and is threadedly connected to the nut 10, the first support body 4 is fixedly connected to the power member 2, the second support body 5 is fixedly connected to the fixed shaft 7, and the power member 2 is arranged in opposite directions from the fixed shaft 7. In this way, when the power member 2 drives the first support body 4 to move toward the second support body 5, the connecting member 6 acts as an intermediate medium, which can transmit power to the second support body 5 and enable the fixed shaft 7 to fix the positioning push rod 1.

[0038] Specifically, the fixed shaft 7 is fixedly connected to the first support body 4 or the second support body 5 via a bearing 15. Specifically, the bearing 15 is fixedly mounted on the second support body 5, and the fixed shaft 7 is interference-connected with the bearing 15. For example, the fixed shaft 7 is mounted on the side of the second support body 5 facing away from the first support body 4. Because the shrinking tubes in the shrinking machine are constantly rotating, the positioning push rod 1 is also subjected to torque transmitted by the shrinking tubes while pushing the shrinking tubes. To prevent the positioning push rod 1 from bending under the action of the torque, the bearing 15 enables the fixed shaft 7 to rotate together with the positioning push rod 1, ensuring that the positioning push rod 1 does not deform due to torsional deformation.

[0039] In some embodiments, the fixed shaft 7 is threadedly connected to the positioning push rod 1. The thread rotation direction of the positioning push rod 1 should be opposite to the rotation direction of the shrink tube to prevent the positioning push rod 1 from being screwed and separated from the fixed shaft 7 when the shrink tube rotates.

[0040] In some embodiments, the position detector 3 includes a limit switch, such as Figure 2 As shown, the limit switch has a first contact 31 and a second contact 32, and the first contact 31 and the second contact 32 are respectively arranged on the opposite side walls of the first support body 4 and the second support body 5, and the first contact 31 and the second contact 32 can be in contact. The first support body 4 and the second support body 5 can be close to each other, which can ensure that the first contact 31 and the second contact 32 are in contact, and then the in-place detector 3 detects that the length of the shrink tube has reached the preset length. The in-place detector 3 transmits the detected information to the controller, and the controller then controls the power part 2 to work to push the positioning push rod 1 to move. In this embodiment, the controller can be a centralized or distributed controller. For example, the controller can be a single single-chip microcomputer, or it can be composed of multiple distributed single-chip microcomputers. The control program can be run in the single-chip microcomputer to control each component to realize its function.

[0041] In some embodiments, the power member 2 is fixedly connected to the connection structure via a universal coupling 16. Specifically, a connecting shaft is fixedly mounted on the sidewall of the second support body 5 facing away from the first support body 4. The universal coupling 16 securely connects the power member 2 to the connecting shaft. The provision of the universal coupling 16 can prevent problems such as jamming caused by misalignment between the power member 2 and the positioning push rod 1. For example, the power member 2 comprises a pneumatic cylinder or an electric push rod.

[0042] In some embodiments, the positioning and pushing device further includes a guide structure and a bracket for providing guidance for the connecting structure. The power member 2 and the connecting structure are both arranged on the bracket. The length extension direction of the guide structure is the same as the length extension direction of the positioning push rod 1. The guide structure is fixedly connected to the bracket. Figure 1 and Figure 3 As shown, the bracket includes a support frame 11 and a base plate 12, wherein the support frame 11, the first support body 4 and the second support body 5 are all arranged above the base plate 12, the support frame 11 is fixedly connected to the base plate 12, the first support body 4 and the second support body 5 can both move horizontally relative to the base plate 12, and the guide structure includes two guide rods 13, which pass through the first support body 4 and the second support body 5 to provide guiding support for the first support body 4 and the second support body 5, so as to ensure that the positioning push rod 1 does not shake when moving horizontally.

[0043] The positioning and pushing device further comprises a drag chain 14 , in which electric wires are arranged to connect the controller, the power member 2 and the in-position detector 3 .

[0044] The utility model also provides a tube shrinking machine, comprising a tube shrinking machine body and a positioning pusher device provided by the utility model. The tube shrinking machine body has a tube shrinking mold cavity and a through hole, and one end of a positioning push rod 1 extends into the tube shrinking mold cavity through the through hole.

[0045] Since the positioning and pushing device is included, the tube shrinking machine of the embodiment of the present invention has all the advantages and beneficial effects of the above embodiments, which will not be described in detail here.

[0046] Furthermore, the above are merely preferred embodiments of the present invention and the technical principles employed. Those skilled in the art will appreciate that the present invention is not limited to the specific embodiments described herein, and that various obvious changes, readjustments, and substitutions are possible for those skilled in the art without departing from the scope of protection of the present invention. Therefore, although the present invention has been described in detail through the above embodiments, the present invention is not limited to the above embodiments and may include many other equivalent embodiments without departing from the scope of the present invention. The scope of the present invention is determined by the scope of the appended claims.

Claims

1. Positioning and pushing device, used to position and push the shrink tube in the shrink tube machine, characterized in that: include: A positioning push rod (1), one end of which is used to extend into the tube shrinking mold cavity of the tube shrinking machine to contact the tube shrinking; A power member (2) is provided at the other end of the positioning push rod (1); A connecting structure, wherein the positioning push rod (1) is connected to the power member (2) via the connecting structure, and the positioning push rod (1) is capable of rotating relative to the power member (2) and the connecting structure; The in-position detector (3) is used to detect whether the positioning push rod (1) is in contact with the shrink tube. After the power member (2) obtains that the positioning push rod (1) is in contact with the shrink tube, it pushes the positioning push rod (1) so that the positioning push rod (1) pushes the shrink tube out of the shrink tube machine.

2. The positioning and pushing device according to claim 1, characterized in that: The connecting structure comprises a first support body (4), a second support body (5), a connecting member (6) and a fixed shaft (7); the connecting member (6) is arranged between the first support body (4) and the second support body (5); the first support body (4) and the second support body (5) are arranged relative to each other; one of the first support body (4) and the second support body (5) is fixedly connected to the connecting member (6), and the other is slidably connected to the connecting member (6); one of the power member (2) and the fixed shaft (7) is fixedly connected to the first support body (4), and the other is fixedly connected to the second support body (5); the fixed shaft (7) is also fixedly connected to the positioning push rod (1); and the in-position detector (3) is installed on the first support body (4) and the second support body (5).

3. The positioning and pushing device according to claim 2, characterized in that: The connection structure further comprises a reset member (8), which is sleeved on the connection member (6) and respectively abuts against the first support body (4) and the second support body (5).

4. The positioning and pushing device according to claim 3, characterized in that: The reset member (8) comprises a spring, and two ends of the spring respectively abut against the first support body (4) and the second support body (5).

5. The positioning and pushing device according to claim 2, characterized in that: The connecting member (6) includes a bolt (9) and a nut (10), one end of the bolt (9) is fixedly connected to one of the first support body (4) and the second support body (5), and the other end of the bolt (9) passes through the other of the first support body (4) and the second support body (5) and is threadedly connected to the nut (10).

6. The positioning and pushing device according to claim 2, characterized in that: The fixed shaft (7) is mounted on the first support body (4) or the second support body (5) via a bearing (15).

7. The positioning and pushing device according to claim 6, characterized in that: The fixed shaft (7) is threadedly connected to the positioning push rod (1).

8. The positioning and pushing device according to claim 2, characterized in that: The in-position detector (3) includes a limit switch, wherein the limit switch has a first contact (31) and a second contact (32), wherein the first contact (31) and the second contact (32) are respectively arranged on the side walls opposite to the first support body (4) and the second support body (5), and the first contact (31) and the second contact (32) are capable of contacting each other.

9. The positioning and pushing device according to claim 1, characterized in that: The power member (2) and the connection structure are fixedly connected via a universal coupling (16).

10. Tube shrinking machine, characterized in that, It comprises a tube shrinking machine body and a positioning and pushing device according to any one of claims 1 to 9, wherein the tube shrinking machine body has a tube shrinking mold cavity and a through hole, and one end of the positioning push rod (1) extends into the tube shrinking mold cavity through the through hole.

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