A forming device for test tube processing

Abstract

The present invention relates to the technical field of test tube processing. The present invention provides a forming device for test tube processing, characterized in that it includes a conveyor roller, a circulating conveyor, a flamethrower, and a propulsion mechanism. The conveyor roller is used to intermittently convey glass tubes. The flamethrower is arranged below the conveyor roller to heat the glass tube. The circulating conveyor is arranged at the discharge end of the conveyor roller. The circulating conveyor is provided with a propulsion mechanism for supporting the inner peripheral wall of the glass tube bottle mouth. The propulsion mechanism includes a mounting ring frame rotatably connected to the circulating conveyor and a propulsion rod slidably arranged on the mounting ring frame. The conveyor roller includes rollers, the main axis of the mounting ring frame is parallel to the main axis of the rollers, and the propulsion rod is configured to move radially along the mounting ring frame after movement to support the inner peripheral wall of the bottle mouth, thereby driving the glass tube to rotate. Through the above technical solution, the technical problem of uneven bottoms easily occurring when test tubes are flame-cut in the related art is solved.

Description

Technical Field

[0001] The embodiments of the present invention relate to the technical field of test tube processing, and in particular, to a forming device for test tube processing. Background Art

[0002] A test tube is a small glass container widely used in the medical field. In the processing of test tubes, the molding process is the core link, involving key steps such as heating and softening the glass tube raw materials, drawing and molding, and cutting.

[0003] The first cutting will be done before the test tube is drawn and formed. This cutting will cut the whole tube into sections. Each section contains two test tubes, and its shape is as follows. Figure 1 As shown, two test tubes are connected bottom to bottom, and then cut again, using a flame to separate the two test tubes into two. The location where the flame burns is the connection point between the bottoms of the two test tubes. However, in the prior art, the test tubes are often burned while the flame is stationary, and the flame acts on the bottle body from bottom to top, that is, only the bottom of the bottle body is heated until it burns through. This often makes the bottom of the two test tubes uneven and uneven, affecting product quality.

[0004] Therefore, it is necessary to improve the structure when using flame cutting to solve the above problems. Summary of the Invention

[0005] In order to overcome the above-mentioned defects, the present invention provides a forming device for test tube processing, which solves the technical problem in the related art that the bottom of the test tube is prone to unevenness when flame cutting is used.

[0006] A forming device for test tube processing, comprising a conveying roller, a circulating conveying member, a flamethrower and a support mechanism, wherein the conveying roller is used to intermittently convey glass tubes, the flamethrower is arranged below the conveying roller, and is used to heat the glass tube. The circulating conveying member is arranged at the discharge end of the conveying roller, and the circulating conveying member is provided with the support mechanism for supporting the inner circumferential wall of the bottle mouth of the glass tube. The support mechanism includes a mounting ring frame rotatably connected to the circulating conveying member, and a support rod slidably arranged on the mounting ring frame, the main axis of the mounting ring frame is parallel to the main axis of the conveying roller, and the support rod is configured to move along the radial direction of the mounting ring frame after moving to support the inner circumferential wall of the bottle mouth, thereby driving the glass tube to rotate.

[0007] For example, at least one embodiment of the present invention provides a forming device for test tube processing, wherein the expansion rod has a rack, and the mounting ring frame is also rotatably provided with a gear, which engages with the rack to drive the expansion rod to move radially along the mounting ring frame.

[0008] For example, in at least one embodiment of the present invention, a forming device for test tube processing is provided, wherein there are a plurality of expansion rods and gears, which are distributed at intervals along the circumference of the mounting ring, and adjacent gears are driven by universal joint couplings.

[0009] For example, at least one embodiment of the present invention provides a forming device for test tube processing, wherein a telescopic mechanism is rotatably provided on the circulating conveyor, and the telescopic mechanism includes an outer shell rotatably arranged on the circulating conveyor, a telescopic member 1 movably arranged in the outer shell and hollow inside, and a telescopic member 2 movably arranged inside the telescopic member 1. The main axis of the outer shell, the telescopic direction of the telescopic member 1, and the telescopic direction of the telescopic member 2 are all arranged perpendicular to the conveying direction of the conveying roller. The mounting ring frame is arranged at the outer end of the telescopic member 1 and can move and rotate with the telescopic member 1. The mounting ring frame is coaxially arranged with the outer shell. The outer wall of the telescopic member 2 has a conical surface that gradually converges toward one side of the mounting ring frame. The telescopic member 2 is configured so that after moving, the conical surface abuts and gradually pushes the stretching rod to move, so that the stretching rod is supported on the inner wall of the bottle mouth.

[0010] For example, in at least one embodiment of the present invention, a forming device for test tube processing is provided, wherein the mounting ring frame is further provided with an elastic member, which acts on the expansion rod to drive the expansion rod to move toward the axial center side of the mounting ring frame.

[0011] For example, at least one embodiment of the present invention provides a forming device for test tube processing, characterized in that a rotating part is provided in the outer shell, the rotating part has an external thread, a flange is connected to the inner side of the telescopic part, the flange has a threaded hole, the external thread is threadedly matched with the threaded hole, and is used to drive the telescopic part to move axially, an inner groove is provided on the inner wall of the outer shell, an outer convex portion is provided on the outer wall of the telescopic part, and the outer convex portion is located in the inner groove, and is used to lock the circumferential position of the telescopic part and the outer shell.

[0012] For example, at least one embodiment of the present invention provides a forming device for test tube processing, wherein the flange plate also has an annular limiting ring, and the annular limiting ring outer shell is provided with a transmission member 1, so that the transmission member 1 follows the movement of the telescopic member 1, the transmission member 1 is hollow inside and communicates with the threaded hole 1, the rotating member passes through the threaded hole 1 and extends into the transmission member 1, the transmission member 1 has an inner protrusion on the inner wall, and the outer wall of the rotating member also has an outer slide groove, and the inner protrusion is located in the outer slide groove 1, so that the transmission member 1 follows the rotation of the rotating member, the transmission member 1 also has an external thread 2 on the outer wall, the telescopic member 2 has a threaded hole 2, and the external thread 2 is threadedly arranged with the threaded hole 2 for driving the telescopic member 2 to move, the telescopic member 1 has an inner slide groove 2 on the inner wall, and the telescopic member 2 has an outer convex portion 2 on the outer wall, and the outer convex portion 2 is located in the inner slide groove 2, for circumferentially limiting the telescopic member 2.

[0013] For example, in at least one embodiment of the present invention, a forming device for test tube processing is provided, wherein there are a plurality of elastic members, and the plurality of elastic members are arranged in a one-to-one correspondence with the plurality of spreading rods.

[0014] For example, at least one embodiment of the present invention provides a forming device for test tube processing, wherein the conveying roller includes a roller and a conveying wheel mounted on the roller, and a plurality of the rollers are arranged at intervals along the conveying direction of the conveying roller, and each of the rollers is mounted with a plurality of the conveying wheels arranged along its axial direction, and the conveying wheel has a notch, and the notch is used to receive and intermittently convey the glass tube.

[0015] For example, at least one embodiment of the present invention provides a forming device for test tube processing, wherein the mounting ring frame is further provided with a stopper, and each stopper is arranged on both sides of each of the expansion rods, and a space for limiting the expansion rod is formed between the two stops.

[0016] The beneficial effects of the embodiments of the present invention are:

[0017] In the present invention, the test tube is driven to rotate during flame cutting by the expansion mechanism, so that the connection position at the bottom of the test tube is evenly heated, which greatly reduces the problem of unevenness and smoothness of the bottom of the test tube in the prior art. This makes the produced test tubes higher in quality and more in line with the high standards of pharmaceutical packaging, reduces the product scrap rate due to bottom defects, and improves production efficiency; the mounting ring frame of the expansion mechanism is movable and rotatable, and the expansion rod is retractable, which can adapt to the production needs of test tubes of different specifications. Regardless of the change in bottle diameter or glass tube length, the device can meet the production requirements through simple adjustment, thereby improving the versatility and flexibility of the device and reducing the cost of equipment replacement for enterprises to produce products of different specifications. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] To more clearly illustrate the technical solutions in the embodiments of the present invention, the following briefly describes the drawings required for describing the embodiments of the present invention. Obviously, the drawings described below are merely exemplary embodiments of the present invention. Those skilled in the art can, without inventive effort, derive other drawings based on the contents of the exemplary embodiments of the present invention and these drawings.

[0019] Figure 1 This is a schematic structural diagram of a glass tube in one embodiment of the present invention;

[0020] Figure 2 A schematic diagram of the three-dimensional structure of a forming device in one embodiment of the present invention;

[0021] Figure 3 for Figure 2 A schematic structural diagram of a circulating conveyor in an embodiment of the present invention;

[0022] Figure 4 for Figure 3 The structural diagram of the enlarged part B in the middle;

[0023] Figure 5 This is a structural diagram of an expansion mechanism in one embodiment of the present invention;

[0024] Figure 6 This is a schematic structural diagram of a telescopic mechanism in one embodiment of the present invention;

[0025] Figure 7 for Figure 2 Schematic diagram of the structure with the enlarged part A in the middle;

[0026] In the picture:

[0027] 1. conveying roller, 11. conveying wheel, 111. notch;

[0028] 2. Circular conveyor parts,

[0029] 3. Glass tube, 31. Bottle mouth

[0030] 4. Spreading mechanism, 41. Mounting ring, 42. Spreading rod, 421. Rack, 44. Gear, 45. Universal joint coupling, 46. Elastic member, 47. Stopper;

[0031] 5. Telescopic mechanism, 51. Housing, 511. Inner slide groove 1, 52. Telescopic member 1, 521. Threaded hole 1, 522. Outer protrusion 1, 523. Inner slide groove 2, 524. Flange, 53. Telescopic member 2, 531. Conical surface, 532. Threaded hole 2, 533. Outer protrusion 2, 54. Rotating member, 541. Outer thread 1, 542. Outer slide groove, 55. Annular limiting ring, 56. Transmission member 1, 561. Inner protrusion, 562. Outer thread 2. DETAILED DESCRIPTION

[0032] The present invention will be further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain the present invention, rather than to limit the present invention.

[0033] To simplify the drawings, only the parts relevant to the disclosure are schematically shown in each figure; they do not represent the actual structure of the product. Furthermore, to simplify the drawings and facilitate understanding, in some figures, only one of the components with the same structure or function is schematically shown or labeled. In this document, "one" not only means "only one" but also "more than one," and "several" includes "two" and "more than two."

[0034] It should be noted that, unless otherwise specified or limited, the terms "mounted," "connected," and "connected" should be understood broadly. For example, they can refer to fixed, detachable, or integral connections; mechanical or electrical connections; direct or indirect connections through an intermediary; and internal communication between two components. Those skilled in the art will understand the specific meanings of these terms in the present invention based on the specific circumstances.

[0035] 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. Furthermore, 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.

[0036] In the description of this embodiment, the terms "up", "down", "left", "right", etc., and the orientation or position relationship are based on the orientation or position relationship shown in the accompanying drawings, and are only for the convenience of description and simplification of operation, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation. Therefore, it should not be understood as a limitation on the present invention.

[0037] In addition, in the description of the present application, the terms "first", "second", etc. are only used to distinguish the description and cannot be understood as indicating or implying relative importance.

[0038] like Figure 1 As shown, it shows the structure of the glass tube in the present invention, such as Figures 2 to 5 As shown, a test tube processing molding device in one embodiment of the present invention is shown. In some examples, in an actual test tube production workshop, the test tube processing molding device is orderly placed in the production line. The conveying roller 1 is a long track composed of multiple rollers, extending along the direction of the production line. The circulating conveyor 2 is arranged between the rollers of the conveying roller 1. It can be a component with cyclic motion characteristics such as a chain or a belt, which is driven by a motor to achieve cyclic rotation. When production starts, the glass tube 3 is placed on the conveying roller 1. The conveying roller 1 performs intermittent conveying according to a preset program. Under the conveying roller 1, flamethrowers are evenly arranged. According to the position and heating requirements of the glass tube 3, the flamethrower sprays flames at the right time to heat the glass tube 3, cuts the glass tube 3 into two, and produces a test tube.

[0039] The circulating conveyor 2 also rotates intermittently, synchronously with the conveying roller 1. The opening mechanism 4 on the circulating conveyor 2 starts to work when the glass tube 3 is conveyed to the cutting position. When the glass tube 3 reaches the cutting position, the mounting ring frame 41 moves along the direction parallel to the axial direction of the roller rotation of the conveying roller 1 under the action of the driving device, close to the bottle mouth 31 at the end of the glass tube 3. When the mounting ring frame 41 moves to the inside of the bottle mouth 31, the opening rod 42 on the side wall of the mounting ring frame 41 is pushed by another driving device, along the direction perpendicular to the axial direction of the roller rotation of the conveying roller 1. The inner wall of the bottle mouth 31 of the glass tube 3 moves until it supports the inner wall of the bottle mouth 31 of the glass tube 3. Then, an external driving device can be used to drive the mounting ring 41 to rotate. Since the support rod 42 supports the glass tube 3, the glass tube 3 will rotate with the rotation of the mounting ring 41, realizing self-rotation. The flamethrower sprays flames to heat the bottom connection position of the glass tube 3. At this time, the rotating glass tube 3 can evenly heat the heated position. Under the continuous heating of the flame, the glass tube 3 gradually softens at the bottom connection position and is finally successfully cut to form two independent test tubes.

[0040] For example, Figure 5As shown, the advantage of such a setting is that the product quality is improved: the test tube is driven to rotate during flame cutting by the expansion mechanism 4, so that the connection position at the bottom of the test tube is evenly heated, which greatly reduces the unevenness and unevenness of the bottom of the test tube in the prior art. This makes the produced test tubes higher in quality and more in line with the high standards of pharmaceutical packaging, reduces the product scrap rate due to bottom defects, and improves production efficiency; enhances the adaptability of the device: the mounting ring frame 41 of the expansion mechanism 4 is movable and rotatable, and the expansion rod 42 is retractable, which can adapt to the production needs of test tubes of different specifications. Regardless of the change in the diameter of the bottle mouth 31 or the change in the length of the glass tube 3, the device can meet the production requirements through simple adjustment, thereby improving the versatility and flexibility of the device and reducing the cost of replacing equipment for enterprises to produce products of different specifications.

[0041] like Figures 2 to 5 As shown, a forming device for test tube processing in one embodiment of the present invention is shown. In some examples, in the actual production scenario of a test tube production workshop, when the glass tube 3 of the test tube is conveyed to the cutting position, the transmission structure related to the stretching mechanism 4 begins to function, and the mounting ring frame 41 approaches the glass tube 3 under the push of an external drive. After the stretching rod 42 is extended into the bottle mouth 31 of the glass tube 3, the gear 44 rotatably arranged on the side wall of the mounting ring frame 41 starts to operate, for example, a small motor is equipped to drive the gear 44 to rotate. When the motor is started, the output shaft of the motor drives the gear 44 to rotate. Since the gear 44 is engaged with the rack 421 on the stretching rod 42, as the gear 44 rotates, the stretching rod 42 will move in a direction perpendicular to the rotation axis of the roller of the conveying roller 1, that is, in a direction close to the inner wall of the bottle buckle, until it supports the inner wall of the bottle mouth 31.

[0042] For example, Figure 5 As shown, the advantage of this arrangement is that it facilitates control of the position of the expansion rod 42: the meshing transmission of the gear 44 and the rack 421 of the expansion rod 42 can more accurately control the movement distance of the expansion rod 42. By controlling the number of revolutions or angles of the motor driving the gear 44, the extension length of the expansion rod 42 can be precisely adjusted to accommodate the size of the bottle mouth 31 of test tubes of different specifications, improving the adaptability of the molding device to various product specifications and enhancing the versatility of the device. Enhanced stability of the expansion rod 42: This meshing transmission method makes the expansion rod 42 more stable when supporting the glass tube 3. During the test tube cutting process, it can effectively resist the various forces generated by the rotation of the glass tube 3, preventing the expansion rod 42 from loosening or displacement, ensuring the stability of the glass tube 3 during the rotation and heating process, thereby improving the cutting quality and reducing product defects caused by the instability of the expansion rod 42.

[0043] like Figures 2 to 5FIG. 4 illustrates a test tube forming device according to an embodiment of the present invention. In some examples, on an actual test tube production line, when a glass tube 3 is conveyed to a cutting station, a circle of spaced-apart spreader rods 42 and gears 44 on a mounting ring 41 begin to operate in tandem. When the mounting ring 41 approaches the glass tube 3, an external drive, such as a motor, rotates one of the gears 44. This gear 44 transmits power to the adjacent gear 44 via a universal joint 45. Because the universal joint 45 can transmit torque at different angles, stable power transmission is ensured even when the mounting ring 41 experiences slight angular changes during movement. In this way, all gears 44 begin to rotate, driving the meshed spreader rods 42 to synchronously move toward the inner wall of the bottle mouth 31 of the glass tube 3.

[0044] For example, Figure 5 As shown, this arrangement offers the advantages of enhanced support stability for the glass tube 3: a circle of spaced-apart support rods 42 more evenly supports the inner wall of the bottle neck 31 of the glass tube 3, ensuring balanced force distribution across all parts of the glass tube 3 during rotation, effectively preventing wobbling caused by localized uneven force. This significantly enhances the rotational stability of the glass tube 3 during flame cutting, thereby improving the quality of the cut bottom, ensuring a smoother, flatter bottom and reducing product defect rates. It also improves equipment reliability and maintainability: if a support rod 42 or gear 44 fails, other components can maintain the rotation of the glass tube 3, ensuring that production is not immediately interrupted, thus enhancing equipment reliability. Furthermore, the spaced-apart layout facilitates operator access to inspect and maintain each component, reducing maintenance efforts, extending the equipment's service life, reducing production downtime caused by equipment failures, and improving production efficiency. Optimized power transmission: The universal joint coupling 45 transmits power between adjacent gears 44, adapting to slight angular variations in the mounting ring 41 during movement and operation, ensuring stable and continuous power transmission. This optimized power transmission method ensures that all the spreading rods 42 can work synchronously and stably, further improving the stability of the support and rotation of the glass tube 3, and helping to improve the processing quality of the test tube.

[0045] like Figures 2 to 6As shown, a forming device for test tube processing in one embodiment of the present invention is shown. In some examples, a telescopic mechanism 5 is also provided. Only the telescopic mechanism 5 can be used to successively realize the movement of the mounting ring frame 41, the movement of the spreader rod 42 and the rotation of the mounting ring frame 41. There is no need to set up multiple external drives, thus avoiding the problem of difficulty in finding an installation position due to limited space. When a batch of glass tubes 3 are intermittently conveyed to the cutting station by the conveying roller 1, the circulating conveying member 2 moves synchronously with the telescopic mechanism 5 to the corresponding position, and then the telescopic member 1 52 moves in the direction close to the glass tube 3, driving the mounting ring frame 41 to approach the bottle mouth 31 of the glass tube 3. After the mounting ring frame 41 enters the bottle mouth 31, the telescopic member 1 52 stops moving. While the telescopic member 1 52 moves, the telescopic member 2 53 also moves synchronously. Since the outer wall of the telescopic member 2 53 has a tapered surface 531 facing the mounting ring frame 41, as the telescopic member 2 53 moves, the tapered surface 531 gradually approaches the center position of the mounting ring frame 41, abuts against the expansion rod 42 and continues to move, gradually pushing the expansion rod 42 along the direction perpendicular to the rotation axis of the roller of the conveying roller 1, that is, moving toward the inner wall of the bottle mouth 31 of the glass tube 3, and then the expansion rod 42 gradually supports the inner wall of the bottle mouth 31 of the glass tube 3, and finally the outer shell 51 rotates as a whole, driving the glass tube 3 to rotate. That is, the first telescopic member 52 is used to drive the mounting ring 41 to move to the inside of the bottle mouth 31 at the end of the glass tube 3, and then the second telescopic member 53 drives the opening rod 42 to move and support the inner wall of the bottle mouth 31 of the glass tube 3. Finally, the outer shell 51 drives the entire body to rotate, driving the glass tube 3 to rotate, so that the cutting position is heated evenly, reducing the problem of unevenness after cutting.

[0046] For example, Figure 6 As shown, the advantage of such an arrangement is that it provides stable support: the telescopic mechanism 5 pushes the expansion rod 42 through the conical surface 531 of the telescopic part 2 53, so that the expansion rod 42 steadily and synchronously supports the inner wall of the bottle mouth 31 of the glass tube 3. This stable support method ensures that the glass tube 3 is uniformly stressed during the rotation process, avoiding shaking or breaking of the glass tube 3 due to uneven stress, thereby improving the cutting quality of the test tube and reducing the defective rate; optimizing the compactness and flexibility of the structure: the telescopic mechanism 5 adopts a multi-layer telescopic structure, and the mounting ring frame 41 is coaxial with the outer shell 51. This design makes the entire structure more compact and occupies less space; improving the convenience and reliability of operation: the operation of the telescopic mechanism 5 is achieved by controlling the movement of the telescopic part 1 52 and the telescopic part 2 53 through a driving device, and the operation is simple and convenient.

[0047] like Figures 2 to 6As shown, it shows a forming device for test tube processing in one embodiment of the present invention. In some examples, the elastic member 46 can be a spring. After the conical surface 531 of the telescopic member 2 53 abuts the expansion rod 42, it is necessary to overcome the elastic force of the elastic member 46 to continue to push the expansion rod 42 to move. When the telescopic member 2 53 is reset, the expansion rod 42 can automatically reset under the elastic force of the elastic member 46 and no longer support the glass tube 3, so as to facilitate the subsequent movement and separation from the inside of the bottle mouth 31 of the glass tube 3.

[0048] For example, Figure 4 As shown, the advantage of such a setting is that it ensures that the expansion rod 42 is reliably reset: the elastic member 46 provides the expansion rod 42 with a reliable force toward the center point, ensuring that after the telescopic member 2 53 is out of contact with the expansion rod 42, the expansion rod 42 can quickly and accurately cancel the support for the inner wall of the bottle mouth 31 of the glass tube 3 and return to the initial position, without interfering with the subsequent transportation of the glass tube 3.

[0049] like Figures 2 to 6 As shown, a forming device for test tube processing in one embodiment of the present invention is shown. In some examples, the specific working principle of the telescopic member 52 is that the rotating member 54 rotates in the outer shell 51. Since the rotating member 54 has an external thread 541 and is threadedly matched with the threaded hole 521 of the telescopic member 52, it is consistent with the principle of the ball screw. As the rotating member 54 rotates, the telescopic member 52 moves in the outer shell 51 along a direction parallel to the rotation axis of the outer shell 51.

[0050] For example, Figure 6 As shown, the advantage of such an arrangement is that it is easy to control the movement of the telescopic member 52: through the threaded arrangement of the external thread 541 of the rotating member 54 and the threaded hole 521 of the telescopic member 52, the extension and retraction length of the telescopic member 52 can be easily controlled. The operator only needs to control the number of rotations of the rotating member 54 to more accurately adjust the position of the telescopic member 52 to meet the production needs of test tubes of different specifications, thereby improving the adaptability of the equipment to various product specifications; the stability of the movement of the telescopic member 52 is enhanced: the circumferential limit design of the outer protrusion 522 in the inner slide groove 511 makes the telescopic member 52 only move along the axial direction during the movement, effectively avoiding the circumferential rotation that may be caused by the threaded transmission, thereby enhancing the stability of the movement of the telescopic member 52. During the test tube processing process, this stability ensures the accuracy of the position of the glass tube 3 during rotation cutting, helps to improve product quality, and reduces cutting defects caused by the instability of the telescopic member 52.

[0051] like Figures 2 to 6As shown, it shows a forming device for test tube processing in one embodiment of the present invention. In some examples, the specific working principle of the telescopic part 2 53 is that the external thread 1 541 of the rotating part 54 cooperates with the threaded hole 1 521 of the telescopic part 1 52, so that the telescopic part 1 52 moves axially. At the same time, due to the socket relationship between the annular limit ring 55 and the transmission part 1 56, the transmission part 1 56 follows the movement of the telescopic part 1 52, and the rotating part 54 passes through the threaded hole 1 521 and extends into the interior of the transmission part 1 56. The inner protrusion 561 of the inner wall of the transmission part 1 56 is located in the outer sliding groove 542 of the outer wall of the rotating part 54. Therefore, the transmission part 1 56 also rotates with the rotating part 54, and the external thread 2 562 of the transmission part 1 56 is threadedly cooperated with the threaded hole 2 532 of the telescopic part 2 53. As the transmission part 1 56 rotates, the telescopic part 2 53 moves axially inside the telescopic part 1 52. The second outer protrusion 533 of the outer wall of the second telescopic member 53 slides in the second inner sliding groove 523, limiting its circumferential rotation and ensuring that the second telescopic member 53 only moves in the axial direction.

[0052] For example, Figure 6 As shown, this arrangement has the advantages of optimizing the transmission structure: utilizing only a single drive source, namely the rotating member 54, allows for simultaneous movement of the first and second telescopic members 52, 53, eliminating the need for multiple external drives. This makes the overall structure more compact, occupies less space, and reduces costs. It also improves equipment stability: the limiting structures between the various components, such as the cooperation between the inner slide groove and the outer protrusion, effectively restrict the circumferential rotation of the telescopic members during movement, enhancing the stability of the entire telescopic mechanism 5. During the test tube processing process, this stability ensures smooth rotation during cutting of the glass tube 3, reduces cutting defects caused by component shaking, and improves product quality and equipment reliability.

[0053] like Figure 7 FIG. 1 shows a test tube forming device according to one embodiment of the present invention. In some examples, the notch 111 on the conveyor wheel 11 is designed so that the glass tube 3 is conveyed downward once per rotation, achieving intermittent conveyance of the glass tube 3. For thinner glass tubes 3, a conveyor wheel 11 with a smaller notch 111 can be used; for thicker glass tubes 3, a conveyor wheel 11 with a larger notch 111 can be used. Furthermore, the motor's pause and start times can be adjusted based on the dwell time required for different processing steps. For example, when producing small-diameter test tubes, since the glass tubes 3 are thinner and the heating time is relatively short, the interval between the motor-controlled roller rotations can be appropriately shortened. However, when producing large-diameter test tubes, since the glass tubes 3 are thicker and the heating time is longer, the interval between the motor-controlled roller rotations can be correspondingly extended to ensure that the glass tubes 3 are adequately heated and subjected to other processing.

[0054] like Figure 5As shown, it shows a forming device for test tube processing in one embodiment of the present invention. In some examples, the block 47 limits the movement of the support rod 42, so that the support rod 42 always maintains a stable supporting state during the rotation of the glass tube 3.

[0055] For example, during flame cutting, the glass tube 3 rotates at a constant speed. If the expansion rod 42 were not restrained by the stopper 47, centrifugal force or other external forces during the rotation of the glass tube 3 might cause displacement, causing the glass tube 3 to wobble and affecting the cutting quality. However, the presence of the stopper 47 ensures that the expansion rod 42 stably supports the glass tube 3, allowing the glass tube 3 to maintain a stable posture during rotation, and the flame can evenly act on the bottom connection of the glass tube 3.

[0056] It should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention and are not intended to limit the present invention. Although the present invention has been described in detail with reference to the preferred embodiments, those skilled in the art should understand that the technical solutions of the present invention may be modified or replaced by equivalents without departing from the spirit and scope of the technical solutions of the present invention, which should all be included in the scope of the claims of the present invention.

Claims

1. A forming device for test tube processing, characterized in that: The invention comprises a conveying roller (1), a circulating conveying member (2), a flamethrower and a support mechanism (4), wherein the conveying roller (1) is used for intermittently conveying a glass tube (3), the flamethrower is arranged below the conveying roller (1) and is used for heating the glass tube (3), the circulating conveying member (2) is arranged at the discharge end of the conveying roller (1), and the support mechanism (4) is provided on the circulating conveying member (2) for supporting the inner peripheral wall of the bottle mouth (31) of the glass tube (3). The spreading mechanism (4) comprises a mounting ring frame (41) rotatably connected to the circulating conveyor (2), and a spreading rod (42) slidably arranged on the mounting ring frame (41); the conveying roller (1) comprises a roller; the main axis of the mounting ring frame (41) is parallel to the main axis of the roller; the spreading rod (42) is configured to move along the radial direction of the mounting ring frame (41) after movement to support the inner peripheral wall of the bottle mouth (31) to drive the glass tube (3) to rotate; The circulating conveying member (2) is rotatably provided with a telescopic mechanism (5), the telescopic mechanism (5) comprises a housing (51) rotatably provided on the circulating conveying member (2), a telescopic member 1 (52) movably provided in the housing (51) and having a hollow interior, and a telescopic member 2 (53) movably provided in the interior of the telescopic member 1 (52), the main axis of the housing (51), the telescopic direction of the telescopic member 1 (52) and the telescopic direction of the telescopic member 2 (53) are all arranged perpendicular to the conveying direction of the conveying roller (1), and the mounting ring The frame (41) is arranged at the outer end of the telescopic member (52) and can move and rotate with the telescopic member (52). The mounting ring frame (41) is coaxially arranged with the housing (51). The outer wall of the telescopic member (53) has a tapered surface (531) that gradually converges toward one side of the mounting ring frame (41). After the telescopic member (53) moves, the tapered surface (531) abuts against and gradually pushes the opening rod (42) to move, so that the opening rod (42) is supported on the inner peripheral wall of the bottle mouth (31).

2. A test tube forming device according to claim 1, characterized in that: The spreading rod (42) is provided with a rack (421), and the mounting ring frame (41) is also rotatably provided with a gear (44), the gear (44) being engaged with the rack (421) to drive the spreading rod (42) to move radially along the mounting ring frame (41).

3. A test tube forming device according to claim 2, characterized in that: There are a plurality of the spreading rods (42) and the gears (44), which are distributed at intervals along the circumference of the mounting ring frame (41), and adjacent gears (44) are driven by universal joint couplings (45).

4. A test tube forming device according to claim 1, characterized in that: An elastic member (46) is further provided on the mounting ring frame (41), and the elastic member (46) acts on the spreading rod (42) to drive the spreading rod (42) to move toward the axis side of the mounting ring frame (41).

5. A test tube forming device according to claim 1, characterized in that A rotating member (54) is provided in the housing (51) for rotation. The rotating member (54) has an external thread (541). A flange (524) is connected to the inner side of the telescopic member (52). The flange (524) has a threaded hole (521). The external thread (541) is threadedly matched with the threaded hole (521) for driving the telescopic member (52) to move axially. An inner groove (511) is provided on the inner wall of the housing (51). An outer convex portion (522) is provided on the outer wall of the telescopic member (52). The outer convex portion (522) is located in the inner groove (511) for locking the circumferential position of the telescopic member (52) and the housing (51).

6. A test tube forming device according to claim 5, characterized in that: The flange (524) also has an annular limiting ring (55), and the outer shell of the annular limiting ring (55) is provided with a transmission member (56), so that the transmission member (56) moves with the telescopic member (52), and the interior of the transmission member (56) is hollow and communicates with the threaded hole (521). The rotating member (54) passes through the threaded hole (521) and extends into the transmission member (56). The inner wall of the transmission member (56) has an inner protrusion (561), and the outer wall of the rotating member (54) also has an outer slide groove (542). The inner protrusion (561) is located in the outer slide groove (542), so that the transmission member (56) moves along the telescopic member (52). The moving member (56) rotates along with the rotating member (54), and the outer wall of the transmission member (56) is further provided with an external thread (562). The flange to which the telescopic member (53) is connected is provided with a threaded hole (532). The external thread (562) and the threaded hole (532) are threadedly arranged to drive the telescopic member (53) to move. The inner wall of the telescopic member (52) is provided with an inner groove (523), and the outer wall of the telescopic member (53) is provided with an outer convex portion (533). The outer convex portion (533) is located in the inner groove (523) and is used to circumferentially limit the telescopic member (53).

7. The test tube forming device according to claim 4, wherein: There are a plurality of elastic members (46), and the plurality of elastic members (46) are arranged in a one-to-one correspondence with the plurality of spreading rods (42).

8. The test tube forming device according to claim 1, characterized in that: The conveying roller (1) further comprises a conveying wheel (11) sleeved on the roller, wherein a plurality of the rollers are arranged at intervals along the conveying direction of the conveying roller (1), and each roller is sleeved with a plurality of the conveying wheels (11) arranged along its axial direction, and the conveying wheel (11) has a notch (111), and the notch (111) is used to receive and intermittently convey the glass tube (3).

9. The test tube forming device according to claim 1, characterized in that: A stopper (47) is also provided on the mounting ring frame (41), and one stopper (47) is arranged on both sides of each of the spreading rods (42), with a space for limiting the position of the spreading rods (42) formed between the two stoppers (47).

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