Conveying device and filter stick forming equipment
By using a combination of top-layer pressing components, bottom-layer pressing components, and pressure regulating devices in the filter rod forming equipment, the radial runout of the workpiece is detected and adjusted, thus solving the instability problem of filter rods during the conveying process and achieving stable conveying of filter rods and efficient operation of the equipment.
Patent Information
- Application Number
- CN202422876792.0
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-11-25
- Publication Date
- 2025-11-18
- Estimated Expiration
- 2034-11-25
AI Technical Summary
In the current cigarette filter rod production process, the filter rods are prone to radial runout due to blockage of the negative pressure pipeline during transportation, which affects production efficiency and appearance quality, and may even lead to equipment shutdown.
A conveying device is adopted, including a top pressure member, a bottom pressure member and a guide rail, combined with a detection device and a pressure regulating device. By detecting the radial runout of the workpiece and releasing high-pressure gas or magnetic force to apply pressure to the workpiece when necessary, the stable conveying of the workpiece is ensured.
It effectively reduces the radial runout of the filter rods, improves production efficiency and product quality, avoids equipment downtime, and ensures the stable operation of the filter rod forming equipment.
Smart Images
Figure CN223554259U_ABST
Abstract
Description
TECHNICAL FIELD
[0001] The utility model relates to cigarette filter stick production technical field especially, a kind of conveying device and filter stick forming equipment. BACKGROUND
[0002] Conveying device is a kind of mechanical workpiece transported in continuous mode by friction drive.Conveying device can be matched with the requirement of process in the production process of each industrial enterprise, and form rhythmical assembly line of water operation.Therefore, conveying device is widely used in modern various industrial enterprises.In actual production, workpiece is generally conveyed by guide rail, in order to improve production efficiency, workpiece needs to be always in contact with guide rail surface during conveying, to ensure stable conveying of workpiece.
[0003] For example, in the field of cigarette filter stick production technology, filter stick forming equipment is used to produce cigarette filter stick, during the process that slit filter stick is transported to cigarette separating wheel device by conveying device, in order to stably convey filter stick, negative pressure pipeline is generally set on guide rail, filter stick is adsorbed on guide rail by negative pressure pipeline, to avoid radial jumping of filter stick, and realize stable conveying.
[0004] But due to dust generated during filter stick cutting and other reasons, negative pressure pipeline is blocked, which leads to insufficient or unstable negative pressure, even loses negative pressure, and further leads to radial jumping of filter stick, which causes wrinkle problem of filter stick appearance, even when radial jumping of filter stick is large, filter stick forming equipment is stopped, which affects production efficiency. UTILITY MODEL CONTENTS
[0005] The utility model aims at providing a kind of, provide a kind of conveying device and filter stick forming equipment, the conveying device can reduce the radial jumping of workpiece, make workpiece stable conveying, improve the production efficiency of filter stick forming equipment.
[0006] To achieve this purpose, the utility model adopts the following technical solutions:
[0007] On the one hand, a kind of conveying device is provided, comprising: top layer pressing piece, bottom layer pressing piece and guide rail arranged in sequence, the bottom layer pressing piece is used to press workpiece on the guide rail, the guide rail is used to convey workpiece, the top layer pressing piece and the bottom layer pressing piece are movably connected, the bottom layer pressing piece can float towards the direction close to or away from the guide rail relative to the top layer pressing piece, the top layer pressing piece and the guide rail position are relatively fixed, wherein, the conveying device further comprises detection device and pressure regulating device, the detection device is used to detect the position of bottom layer pressing piece, the pressure regulating device is connected with the bottom layer pressing piece, and the pressure regulating device is used to apply pressure to workpiece, so that workpiece is pressed to the guide rail.
[0008] As preferably, the pressure regulating device comprises a gas source and a gas nozzle arranged on the bottom pressing piece, the gas source is used for supplying high-pressure gas to the gas nozzle, and the gas nozzle blows high-pressure gas to the workpiece to apply pressure to the workpiece.
[0009] As preferably, the conveying device further comprises an elastic member arranged between the top pressing piece and the bottom pressing piece, and the elastic member is configured to make the bottom pressing piece always have a tendency to move towards the guide rail.
[0010] As preferably, the conveying device further comprises a guide rod connected with the bottom pressing piece, and the top pressing piece is provided with a through hole, and the guide rod is slidably arranged in the through hole.
[0011] As preferably, the guide rod is threadedly connected with the bottom pressing piece.
[0012] As preferably, a plurality of guide rods are arranged at intervals along the direction in which the workpiece is conveyed, and a plurality of through holes are arranged at intervals on the top pressing piece, and the plurality of guide rods are correspondingly arranged in the plurality of through holes.
[0013] As preferably, the through hole and the guide rod are both T-shaped in longitudinal section, the through hole is T-shaped and has a large hole and a small hole in communication, the guide rod is T-shaped and has a limiting portion and a guiding portion, the conveying device further comprises a plug, the plug is mounted on the top pressing piece and closes one end of the large hole of the through hole, the limiting portion of the guide rod and the elastic member are arranged in the large hole of the through hole, and the two ends of the elastic member respectively abut against the plug and the guide rod.
[0014] As preferably, the plug is threadedly connected with the top pressing piece.
[0015] As preferably, the guide rail is provided with a conveying groove for conveying the workpiece, and / or the bottom pressing piece is provided with a pressing groove, and the side wall of the pressing groove is used for abutting against the surface of the workpiece.
[0016] In another aspect, a filter rod forming equipment is provided, which comprises a forming frame and the conveying device of any one of the technical solutions, and the top pressing piece and the guide rail are both fixedly connected with the forming frame.
[0017] The conveying device has the advantages that: the conveying device is provided, when the radial runout of the workpiece is greater than a preset value, the pressure regulating device releases airflow to make the workpiece press on the guide rail, the radial runout of the workpiece is avoided, the conveying stability of the workpiece is improved, and the production efficiency of the filter rod forming equipment is improved. BRIEF DESCRIPTION OF DRAWINGS
[0018] Figure 1 is an explosion view of the conveying device provided by the utility model.
[0019] Figure 2 is the front view of the conveying device provided by the utility model;
[0020] Figure 3 is the front view of the conveying device provided by the utility model;
[0021] Figure 4 is Figure 3 the partial enlarged sectional view of part A.
[0022] In the figure: 1, top layer pressing piece; 11, through hole; 2, bottom layer pressing piece; 21, pressing groove; 3, guide rail; 31, conveying groove; 4, detection device; 5, pressure regulating device; 51, air nozzle; 52, air pipe; 53, electromagnetic valve; 6, guide rod; 7, elastic piece; 8, plug. DETAILED DESCRIPTION
[0023] The utility model will be further explained in detail in connection with the drawings and embodiments. It can be understood that the specific embodiments described herein are only used to explain the utility model, and not limited to the utility model. In addition, it should be noted that, in order to facilitate the description, only the part related to the utility model is shown in the drawings, not all structures.
[0024] In the description of the utility model, unless otherwise explicitly specified and limited, the terms "connected", "connected", "fixed" should be understood broadly, for example, it can be fixedly connected, or it can be detachably connected, or it can be integrated; it can be mechanically connected, or it can be electrically connected; it can be directly connected, or it can be indirectly connected through an intermediate medium, or it can be the internal communication of two elements or the interaction relationship of two elements. For ordinary skilled in the art, the specific meaning of the above terms in the utility model can be understood according to the specific circumstances.
[0025] In the utility model, unless otherwise explicitly specified and limited, the first feature "on" or "below" the second feature can include that the first and second features are in direct contact, or the first and second features are not in direct contact but are in contact through another feature between them. Moreover, the first feature "on", "above" and "on" the second feature includes that the first feature is directly above and obliquely above the second feature, or only indicates that the horizontal height of the first feature is higher than that of the second feature. The first feature "below", "below" and "below" the second feature includes that the first feature is directly below and obliquely below the second feature, or only indicates that the horizontal height of the first feature is less than that of the second feature.
[0026] In the description of the present embodiment, the terms "upper", "lower", "right", and the like, are based on the orientation or positional relationship shown in the drawings, and are only for the convenience of description and simplification of operation, and do not indicate or imply that the devices or elements referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as a limitation on the present application. In addition, the terms "first" and "second" are only used to distinguish in the description, and have no special meaning.
[0027] The technical scheme of the present application will be further illustrated below in conjunction with the drawings and through specific embodiments.
[0028] Referring to Figures 1 to 4 , the present embodiment provides a conveying device, which comprises a top pressing piece 1, a bottom pressing piece 2 and a guide rail 3 arranged in sequence, the bottom pressing piece 2 is used to press the workpiece against the guide rail 3, the guide rail 3 is used to convey the workpiece, the top pressing piece 1 and the bottom pressing piece 2 are movably connected, the bottom pressing piece 2 can float in the direction of approaching or moving away from the guide rail 3 relative to the top pressing piece 1, the top pressing piece 1 is relatively fixed in position with the guide rail 3, the conveying device further comprises a detection device 4 and a pressure regulating device 5, the detection device 4 is used to detect the position of the bottom pressing piece 2, the pressure regulating device 5 is connected with the bottom pressing piece 2, and the pressure regulating device 5 is used to apply pressure to the workpiece so that the workpiece is pressed towards the guide rail 3. In this way, the bottom pressing piece 2 presses the workpiece against the guide rail 3, when the workpiece has radial runout, the bottom pressing piece 2 can overcome the downward pressure given by the bottom pressing piece 2 and make the bottom pressing piece 2 float in the vertical direction relative to the top pressing piece 1, the detection device 4 can detect the position of the bottom pressing piece 2 and then calculate the amount of floating of the bottom pressing piece 2. When the amount of floating of the bottom pressing piece 2 exceeds a preset value, the pressure regulating device 5 applies pressure to the workpiece so that the workpiece is pressed towards the guide rail 3, thereby reducing the radial runout of the workpiece, allowing the workpiece to be stably conveyed between the bottom pressing piece 2 and the guide rail 3, and improving production efficiency. Preferably, the top pressing piece 1 and the bottom pressing piece 2 are both pressing plates, and the range of floating of the bottom pressing piece 2 is set to 0-3mm.
[0029] Preferably, the side wall of the top pressing piece 1 is provided with a fastening hole, a fastener is arranged in the fastening hole, the detection device 4 passes through the top pressing piece 1, and the detection head of the detection device 4 is connected with the bottom pressing piece 2, before operation of the conveying device, the installation position of the detection device 4 is adjusted so that the detection head of the detection device 4 is in contact with the bottom pressing piece 2, the fastener fixes the detection device 4 on the top pressing piece 1, ensuring that the detection head of the detection device 4 is always in contact with the bottom pressing piece 2, and thus the position of the bottom pressing piece 2 can be detected more accurately. Specifically, the detection device 4 can be an optical power meter or an optical time domain reflectometer.
[0030] Optionally, referring to Figures 2 to 3The pressure adjusting device 5 comprises a gas source (not shown in the drawings) and a gas nozzle 51 arranged on the bottom pressing member 2. The gas source is used to supply high-pressure gas to the gas nozzle 51, and the gas nozzle 51 blows the high-pressure gas to the workpiece to apply pressure to the workpiece. In this way, the high-pressure gas blown to the workpiece provides pressure to the workpiece, so that the workpiece is pressed against the guide rail 3, the radial jumping of the workpiece is avoided, the stable conveying of the workpiece on the conveying device is ensured, and the production efficiency is improved. Preferably, the pressure adjusting device 5 further comprises an electromagnetic valve 53 and a gas pipe 52. The electromagnetic valve 53 is connected between the gas source and the gas pipe 52, and the other end of the gas pipe 52 is connected with the gas nozzle 51. When the floating distance of the bottom pressing member 2 exceeds the preset value of the detection device 4, the electromagnetic valve 53 is opened, the high-pressure gas flow in the gas source flows through the gas pipe 52 and is sprayed from the gas nozzle 51, blows to the workpiece, and provides pressure to the workpiece, so that the workpiece is stably conveyed between the guide rail 3 and the bottom pressing member 2. Specifically, the gas source is a gas storage tank, and the gas storage tank stores high-pressure gas. The gas source can also be an air compressor.
[0031] In other embodiments, the pressure adjusting device 5 can also be an electromagnet. The electromagnet is installed on the bottom pressing member 2, and a magnet is installed on the guide rail 3. When the floating distance of the bottom pressing member 2 exceeds the preset value of the detection device 4, the electromagnet is powered to generate magnetism, and the electromagnet on the bottom pressing member 2 generates magnetic force with the magnet on the guide rail 3, thereby providing pressure to the workpiece and pressing the workpiece against the guide rail 3.
[0032] Optionally, referring to Figures 2 to 4 The conveying device further comprises an elastic member 7 arranged between the top pressing member 1 and the bottom pressing member 2. The elastic member 7 is configured to make the bottom pressing member 2 always have a tendency to move towards the guide rail 3. In this way, when the workpiece jumps slightly, the pressure provided by the elastic member 7 can press the workpiece against the guide rail 3.
[0033] Optionally, referring to Figure 4 The conveying device further comprises a guide rod 6 connected with the bottom pressing member 2. The top pressing member 1 is provided with a through hole 11, and the guide rod 6 is slidably arranged in the through hole 11. In this way, the guide rod 6 passes through the through hole 11 of the top pressing member 1 and is connected with the bottom pressing member 2, so that the guide rod 6 slides in the through hole 11 of the top pressing member 1, thereby driving the bottom pressing member 2 to float relative to the top pressing member 1. The bottom pressing member 2 can only float in the direction in which the guide rod 6 is installed, so that the floating of the bottom pressing member 2 relative to the top pressing member 1 is in the vertical direction. The bottom pressing member 2 provides downward pressure to the workpiece, so that the floating direction of the bottom pressing member 2 is more accurate and stable. The floating of the bottom pressing member 2 relative to the top pressing member 1 is prevented from deviating to generate force in other directions on the workpiece, thereby avoiding the wear of the workpiece and the material loss.
[0034] Optionally, the guide rod 6 is screwed with the bottom layer pressing piece 2. Preferably, the bottom layer pressing piece 2 is provided with a threaded hole, and the guide rod 6 is provided with a thread. Since the guide rod 6 needs to pass through the through hole 11 of the top layer pressing piece 1, the guide rod 6 is arranged on the top layer pressing piece 1, which facilitates the assembly of the top layer pressing piece 1. During the assembly of the conveying device, the guide rod 6 is first screwed into the threaded hole of the bottom layer pressing piece 2 through the through hole 11 of the top layer pressing piece 1, so that the guide rod 6 is fixedly connected with the bottom layer pressing piece 2. The threaded hole can be directly arranged on the bottom layer pressing piece 2, or can be arranged on the boss protruding from the bottom layer pressing piece 2.
[0035] Optionally, a plurality of guide rods 6 are arranged at intervals along the direction in which the workpiece is conveyed, a plurality of through holes 11 are arranged at intervals on the top layer pressing piece 1, and the plurality of guide rods 6 are correspondingly arranged in the plurality of through holes 11. In this way, the bottom layer pressing piece 2 of the conveying device can provide uniform downward pressure on the workpiece.
[0036] Optionally, referring to Figure 4 , the longitudinal section of the through hole 11 and the guide rod 6 is T-shaped. The longitudinal section of the through hole 11 is T-shaped and has a large hole and a small hole connected to each other. The longitudinal section of the guide rod 6 is T-shaped and has a limiting portion and a guide portion. The conveying device further comprises a plug 8, which is installed on the top layer pressing piece 1 and closes one end of the large hole of the through hole 11. The limiting portion of the guide rod 6 and the elastic member 7 are arranged in the large hole of the through hole 11, and the two ends of the elastic member 7 abut against the plug 8 and the guide rod 6, respectively. In this way, the elastic member 7 is compressed between the plug 8 and the guide rod 6, which facilitates assembly. Preferably, the elastic member 7 is a compression spring.
[0037] Further, the plug 8 is installed on the top layer pressing piece 1 and closes one end of the through hole 11, which ensures that the elastic member 7 will not slide out of the end of the through hole 11 provided with the plug 8 when the guide rod 6 presses the elastic member 7. The through hole 11 is T-shaped and has different hole diameters from large to small, thereby forming a step inside the through hole 11. The head of the T-shaped guide rod 6 is clamped on the step of the T-shaped through hole 11, thereby limiting the position of the T-shaped guide rod 6 to be in contact with the step of the T-shaped through hole 11, so that the T-shaped guide rod 6 is at least partially arranged in the through hole 11 of the top layer pressing piece 1, thereby ensuring that the guide rod 6 and the elastic member 7 will not slide out of the bottom end of the through hole 11.
[0038] Optionally, the plug 8 is screwed with the top layer pressing piece 1. In this way, by adjusting the tightness of the plug 8, the compression degree of the compression spring can be controlled, and then the pressing force of the bottom layer pressing piece 2 can be controlled. By adjusting the compression amount of the compression spring through screwing the plug 8, the force of the bottom layer pressing piece 2 pressing the workpiece can be kept at an appropriate degree. When the workpiece has a small amplitude of jumping, the workpiece can be ensured to be pressed against the guide rail, and at the same time, the workpiece will not be subjected to excessive force, which can cause surface wear of the workpiece or even compress the workpiece so that the workpiece cannot move, thereby ensuring the conveying efficiency.
[0039] When the pressing force provided by the bottom layer pressing piece 2 is too large, so that the workpiece is subjected to excessive friction during movement and is worn or even cannot move, the plug 8 is loosened, the plug 8 is moved upward, the compression of the elastic member 7 is reduced, the pressing force of the bottom layer pressing piece 2 on the workpiece is reduced, and the workpiece can be stably conveyed. When the pressing force provided by the bottom layer pressing piece 2 is too small, the pressing force of the bottom layer pressing piece 2 on the workpiece is insufficient or even cannot press against the workpiece, which causes the workpiece to jump radially, the plug 8 is tightened, the plug 8 is moved downward, the elastic member 7 is further compressed, and then the bottom layer pressing piece 2 is floated toward the guide rail 3, the pressing force of the bottom layer pressing piece 2 on the workpiece can be increased, the radial jumping of the workpiece can be avoided, and the workpiece can be stably conveyed.
[0040] In other embodiments, according to different specifications of the workpiece to be transported, the plug 8 is adjusted to make the bottom layer pressing piece 2 float relative to the top layer pressing piece 1, and at the same time, the number of shims between the bottom layer pressing piece 2 and the guide rail 3 is increased or decreased, so that the conveying device can be adapted to workpieces of different specifications without the need to replace the pressing pieces, thereby making the conveying device highly adjustable, highly adaptable, and reducing the production cost of the workpiece.
[0041] Optionally, referring to Figure 1 , the guide rail 3 is provided with a conveying groove 31 for conveying the workpiece, and / or the bottom layer pressing piece 2 is provided with a pressing groove 21, and the side wall of the pressing groove 21 is used to abut the surface of the workpiece. In this way, the contact area between the conveying device and the workpiece can be increased, which can play a supporting and guiding role during the transportation of the filter rod, so that the workpiece can be stably transported between the guide rail 3 and the bottom layer pressing piece 2. Optionally, the conveying groove 31 can be a V-shaped groove or a U-shaped groove.
[0042] Preferably, the top layer pressing piece 1 and the bottom layer pressing piece 2 are made of aluminum alloy material. Since the aluminum alloy material has the characteristics of high compressive strength, long service life, and light weight, in this way, the wear caused by the friction between impurities on the surface of the workpiece or in the environment and the conveying device during production can be avoided, and at the same time, the bottom layer pressing piece 2 is light in weight, so that the bottom layer pressing piece 2 can more smoothly float relative to the top layer pressing piece 1 in the vertical direction.
[0043] In another aspect, the embodiment also provides a filter rod forming equipment, which comprises a forming frame and the conveying device, the top pressing piece 1 and the guide rail 3 are fixedly connected with the forming frame, and the conveying device is used for conveying filter rods.
[0044] In other embodiments, the conveying device can be applied to the field of automatic warehouse logistics, and accordingly, the guide rail 3 is used for transporting goods, and the bottom pressing piece 2 is used for pressing the goods against the guide rail 3. The conveying device can also be applied to the fields of automatic production lines, numerical control machine tools, printing machines and the like.
[0045] The working principle of the filter rod forming equipment for conveying filter rods is as follows:
[0046] The filter rod forming machine produces filter rods mainly through the following processes: material preparation, tow opening, plasticizer application, feeding, rolling forming, cutting, and transferring. In the process from cutting to transferring, the formed filter rods are sequentially sent to the conveying device for conveying after being cut by a cutting device. The filter rods are transported along the conveying groove 31 of the guide rail 3 between the guide rail 3 and the bottom pressing piece 2. Under the action of the elastic piece 7, the bottom pressing piece 2 presses the filter rods against the guide rail 3, so that the filter rods are transported along the conveying groove 31 of the guide rail 3. When the filter rods have slight radial jumping, the elastic piece 7 between the plug 8 and the guide rod 6 abuts, which plays a buffering role to reduce the radial jumping of the filter rods. When the detection device 4 detects that the radial jumping of the filter rods is too large and exceeds a preset value, the electromagnetic valve 53 of the pressure regulating device 5 is opened, the high-pressure airflow in the air source flows through the air pipe 52 and is blown to the filter rods through the air nozzle 51 on the bottom pressing piece 2, so as to provide pressure to the filter rods and reduce the radial jumping of the filter rods, so that the filter rods are stably conveyed between the guide rail 3 and the bottom pressing piece 2. Finally, the filter rods enter the cigarette dividing wheel device through the conveying device. Since the just-produced filter rods are soft in texture and have not been solidified, once radial jumping occurs during conveying, the filter rods are prone to wrinkles. The application of the conveying device to the filter rod forming equipment can reduce the radial jumping of the filter rods, thereby avoiding the generation of wrinkles in the filter rods during conveying and improving the production quality of products. It should be understood that the cutting device and the cigarette dividing wheel device all belong to the prior art, and the embodiment will not be described again.
[0047] Obviously, the above embodiments of the utility model are only examples for clearly illustrating the utility model, and are not a limitation on the embodiments of the utility model. For ordinary skilled persons in the art, various obvious changes, re-adjustments and replacements can be made without departing from the protection scope of the utility model. Here, it is unnecessary and impossible to enumerate all the embodiments. Any modification, equivalent replacement and improvement made within the spirit and principle of the utility model shall be included in the protection scope of the utility model claim.
Claims
1. A delivery device comprising: The top layer pressing piece (1), the bottom layer pressing piece (2) and the guide rail (3) are sequentially arranged, the bottom layer pressing piece (2) is used for pressing the workpiece against the guide rail (3), the guide rail (3) is used for conveying the workpiece, the top layer pressing piece (1) and the bottom layer pressing piece (2) are movably connected, the bottom layer pressing piece (2) can float towards the direction of approaching or moving away from the guide rail (3) relative to the top layer pressing piece (1), and the top layer pressing piece (1) is fixed relative to the position of the guide rail (3), characterized in that the conveying device further comprises a detection device (4) and a pressure regulating device (5), the detection device (4) is used for detecting the position of the bottom layer pressing piece (2), the pressure regulating device (5) is connected with the bottom layer pressing piece (2), and the pressure regulating device (5) is used for applying pressure to the workpiece so that the workpiece is pressed towards the guide rail (3).
2. The delivery device of claim 1, wherein, The pressure regulating device (5) comprises a gas source and a gas nozzle (51) arranged on the bottom layer pressing piece (2), the gas source is used for supplying high-pressure gas to the gas nozzle (51), and the gas nozzle (51) blows high-pressure gas towards the workpiece to apply pressure to the workpiece.
3. The delivery device of claim 1, wherein, The conveying device further comprises an elastic member (7), the elastic member (7) is arranged between the top layer pressing piece (1) and the bottom layer pressing piece (2), and the elastic member (7) is configured to make the bottom layer pressing piece (2) always have a tendency to move towards the guide rail (3).
4. The delivery device of claim 3, wherein, The conveying device further comprises a guide rod (6), the guide rod (6) is connected with the bottom layer pressing piece (2), and the top layer pressing piece (1) is provided with a through hole (11), and the guide rod (6) is slidably arranged in the through hole (11).
5. The delivery device of claim 4, wherein, The guide rod (6) is threadedly connected with the bottom layer pressing piece (2).
6. The delivery device of claim 5, wherein, A plurality of guide rods (6) are arranged at intervals along the direction in which the workpiece is conveyed, a plurality of through holes (11) are arranged at intervals on the top layer pressing piece (1), and the plurality of guide rods (6) are correspondingly arranged in the plurality of through holes (11).
7. The delivery device of claim 6, wherein, The longitudinal section of the through hole (11) and the guide rod (6) is T-shaped, the longitudinal section of the through hole (11) is T-shaped and has a large hole and a small hole connected in communication, the longitudinal section of the guide rod (6) is T-shaped and has a limiting portion and a guiding portion, the conveying device further comprises a plug (8), the plug (8) is mounted on the top layer pressing piece (1), the plug (8) closes one end of the large hole of the through hole (11), the limiting portion of the guide rod (6) and the elastic member (7) are arranged in the large hole of the through hole (11), and the two ends of the elastic member (7) respectively abut against the plug (8) and the guide rod (6).
8. The delivery device of claim 7, wherein, The plug (8) is threadedly connected with the top layer pressing piece (1).
9. The delivery device of any of claims 1-8, wherein, The guide rail (3) is provided with a conveying groove (31) for conveying the workpiece, and / or the bottom layer pressing piece (2) is provided with a pressing groove (21), and the side wall of the pressing groove (21) is used for abutting against the surface of the workpiece.
10. A filter rod forming apparatus characterized by comprising: The filter rod forming apparatus comprises a forming frame and the conveying device according to any one of claims 1-9, and the top layer pressing piece (1) and the guide rail (3) are fixedly connected with the forming frame.