Glass tube stacking device

Abstract

The invention relates to the technical field of glass tube conveying and stacking, in particular to a glass tube stacking device which is used for solving the problem that glass tube coatings are prone to being damaged due to the fact that a brush is adopted for pushing glass tube stacking. The device comprises a transmission mechanism and a bearing mechanism, the transfer mechanism comprises a first rotating roller, a second rotating roller, a discharging belt and a cross rod, the first rotating roller and the second rotating roller are in transmission connection through the discharging belt, and the discharging belt is divided into a working section and a non-working section; the working section is used for bearing a glass tube, and the non-working section is connected with the cross rod; the transverse rod is configured to move in the vertical direction so as to drive the non-working section to move downwards, then the discharging belt drives the second rotating roller to move in the direction close to the first rotating roller so that the working section can be shortened, and the glass tubes on the working section can fall into the bearing mechanism one by one. And a brush is not needed for pushing, so that the glass tube coating is not easily damaged.

Description

Technical Field

[0001] The invention relates to the technical field of glass tube conveying and stacking, and in particular to a glass tube stacking device. Background Art

[0002] In the production and processing of glass products, the palletizing of glass tubes is an indispensable and important link. With the continuous improvement of industrial automation, the traditional manual palletizing method can no longer meet the growing production needs. Manual palletizing is not only inefficient and difficult to achieve large-scale and continuous production, but also during the palletizing process, workers frequently touch the glass tubes, which can easily cause glass tube breakage due to improper operation, resulting in economic losses and increasing the risk of worker injury.

[0003] At present, in the field of glass tube packaging and palletizing, it is common to use brush-pushed stacking machines. This type of equipment uses the mechanical thrust of the brush to arrange and transfer the glass tubes. However, this technology has significant disadvantages in practical applications. In order to avoid scratches on the surface of the glass tube, a layer of organic matter is usually sprayed on its surface to form a protective film, but this also makes the surface of the glass tube more sensitive to external forces. The selection of brush material and the control of thrust size have become key factors restricting the performance of the equipment: if the brush material is too hard or the pushing force is too large, it is very easy to leave brush indentations on the surface of the glass tube, destroying the integrity of the surface spray layer and affecting the appearance and quality of the product; if the brush material is too soft and the thrust is insufficient, it is impossible to effectively push the glass tube to complete the arrangement and stacking action, resulting in low stacking efficiency and poor regularity of the finished product. This contradiction caused by the mechanical contact of the brush makes it difficult for the existing brush-pushed stacking machine to achieve a balance between glass tube surface protection and efficient stacking, and the effect is not good. Summary of the invention

[0004] The invention provides a glass tube stacking device to solve the problem that the glass tube coating is easily damaged when the glass tubes are stacked by using a brush.

[0005] In order to alleviate the above technical problems, the technical solution provided by the present invention is: A glass tube stacking device comprises a transfer mechanism and a receiving mechanism; The transmission mechanism comprises a first roller, a second roller, a feeding belt and a cross bar. The first roller and the second roller are connected by the feeding belt, and the feeding belt is divided into a working section located on the upper surface and a non-working section located on the lower surface. The working section is used to carry the glass tube, and the non-working section is connected to the cross bar. The cross bar is configured to be able to move in the vertical direction to drive the non-working section to move downward, and then the unwinding belt drives the second roller to move toward the first roller to shorten the working section, and the glass tubes on the working section fall into the receiving mechanism one by one.

[0006] Furthermore, the transfer mechanism further includes a limiting roller, which is arranged between the second roller and the cross bar and is attached to the lower surface of the non-working section.

[0007] Furthermore, the transfer mechanism includes a frame, and a sliding seat is slidably connected to the frame; The second roller is rotatably installed on the sliding seat, and a guide rod is arranged on the sliding seat.

[0008] Furthermore, the transfer mechanism further includes a first tension spring; One end of the first tension spring is connected to the guide rod, and the other end is connected to the frame, and is configured to apply a pulling force to the guide rod.

[0009] Furthermore, an offset mechanism is further included. The offset mechanism includes a first limiting unit, and the first limiting unit includes a limiting rod; The limiting rod is configured to abut against the sliding seat to limit the distance that the sliding seat moves away from the first roller, and the end of the limiting rod away from the sliding seat abuts against the guide rod.

[0010] Furthermore, the first limiting unit further includes a first wedge block, a second wedge block and a second tension spring; The first wedge block is fixedly installed on the frame, the second wedge block is connected to the limiting rod, and the second tension spring is connected to the second wedge block; Both the first wedge block and the second wedge block are provided with inclined surfaces, and the second tension spring is configured to apply a pulling force to the second wedge block so that the two inclined surfaces abut against each other; The second wedge block is configured to be able to rotate around its own axis so that the two inclined surfaces are switched between a first state and a second state, thereby moving the limiting rod; In the first state, the two inclined surfaces are parallel and abutted; in the second state, the vertices of the two inclined surfaces abut against each other; when the second wedge block rotates 90 degrees relative to the first wedge block, the first state is switched to the second state, and the limiting rod moves away from the first roller, so that the sliding seat slides a length distance equal to the radius of a glass tube in the direction of the limiting rod.

[0011] Furthermore, the offset mechanism further includes a driving unit, and the driving unit includes a first gear, a first rack, a first connecting rod, a second connecting rod and a turntable; The first gear is connected to the second wedge block and is configured to drive the second wedge block to rotate around its own axis; The first rack is engaged with the first gear and is configured to move in a second direction to drive the first gear to rotate forward and backward. The second direction is perpendicular to the first direction, and the sliding direction of the sliding seat is the first direction; One end of the first connecting rod is hinged to the first rack, and the other end is hinged to the second connecting rod. An eccentric rod is arranged on the turntable, and a sliding groove is arranged on the second connecting rod; the eccentric rod is inserted into the sliding groove and slides along the sliding groove. The turntable is configured to rotate around its own axis so that the eccentric rod drives the second connecting rod to move in the second direction, and then drives the first rack to move through the first connecting rod, so that the first rack drives the first gear to rotate, so that the position of the limiting rod changes.

[0012] Furthermore, the driving unit further includes a second gear, a second rack and a fixing plate; The turntable is rotatably mounted on the fixing plate through a one-way bearing, the second gear is connected to the turntable through a one-way bearing, and the second rack meshes with the second gear and is connected to the sliding seat; The second rack reciprocates in the first direction under the drive of the sliding seat to drive the second gear to rotate forward and backward, and then drives the turntable to rotate in one direction, and the turntable drives the second connecting rod to slide linearly back and forth.

[0013] Furthermore, the offset mechanism further includes a second limiting unit, and the second limiting unit includes a first hydraulic rod, a second hydraulic rod, a connecting pipe and a limiting convex plate; The first hydraulic rod is installed on the fixing plate, the second hydraulic rod is installed on the frame, and the rodless cavity of the first hydraulic rod is communicated with the rodless cavity of the second hydraulic rod through a connecting pipe; The transmission mechanism further includes a cylinder, and the extending end of the cylinder is connected to the cross bar for driving the cross bar to move in the vertical direction, and the limiting convex plate is installed on the extending end of the cylinder; After the second connecting rod moves towards the direction close to the first roller and abuts against the extending end of the first hydraulic rod and continues to move, the extending end of the second hydraulic rod extends and is located above the limiting convex plate to limit the upward moving distance of the limiting convex plate.

[0014] Furthermore, the receiving mechanism includes a conveying unit and a carrying unit; The carrying unit is placed on the conveying unit, and the conveying unit is used for conveying the carrying unit; The carrying unit includes a receiving frame, a hydraulic cylinder and a lifting plate; the receiving frame is provided with a receiving space for receiving a glass tube, and the lifting plate is arranged in the receiving space; The hydraulic cylinder is installed on the receiving frame, and the extending end of the hydraulic cylinder is connected to the lifting plate; the hydraulic cylinder drives the lifting plate to move in the vertical direction to receive the falling glass tube.

[0015] The beneficial effects of the present invention are analyzed as follows: A glass tube palletizing device includes a transfer mechanism and a receiving mechanism; the transfer mechanism includes a first roller, a second roller, a feeding belt, and a cross bar. The first roller and the second roller are drivingly connected through the feeding belt, and the feeding belt is divided into a working section and a non-working section; the working section is used to carry glass tubes, and the non-working section is connected to the cross bar; the cross bar is configured to be able to move vertically to drive the non-working section downward, and then the feeding belt drives the second roller to move towards the first roller, so that the working section is shortened, and the glass tubes on the working section fall into the receiving mechanism one by one.

[0016] The glass tubes to be palletized are located above the conveyor belt. The conveyor belt is inclined, and a plurality of partition strips are provided on its surface. The glass tubes are located between two adjacent partition strips. There is sufficient friction between the first roller and the second roller and the conveyor belt, and they will not slip relative to the conveyor belt. In the initial state, the second roller is at the starting end of the palletizing of the receiving mechanism. The motor is started and drives the conveyor belt to run. After the upper straight section of the conveyor belt is filled with glass tubes, the motor stops running, and the motor has a self-locking function. After the motor stops running, the first roller no longer rotates. Subsequently, the cross bar moves vertically downward, so that the conveyor belt can be pulled to deform, shortening its upper straight section. And because the first roller does not rotate, when the cross bar moves downward, the second roller can drive the slide to slide, and the second roller rotates on the slide, so that the glass tubes near the second roller are released onto the receiving mechanism one by one, thus completing the palletizing of the glass tubes.

[0017] By setting the offset mechanism, the glass tubes on the upper and lower sides can be staggered by a distance of one radius, avoiding the mutual collision of glass tubes during the palletizing process, improving the palletizing efficiency and stability, enabling the glass tubes to be arranged orderly during the palletizing process, and further enhancing the stability of the overall structure. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] In order to more clearly illustrate the specific embodiments of the present invention or the technical solutions in the related art, the following will briefly introduce the drawings required for use in the description of the specific embodiments or the related art. Obviously, the following drawings are some embodiments of the present invention. For those of ordinary skill in the art, without creative efforts, other drawings can also be obtained based on these drawings.

[0019] Figure 1 It is a schematic diagram of the overall structure of the present invention; Figure 2 It is a cross-sectional view of the frame of the present invention; Figure 3 It is a schematic diagram of the structure at the receiving mechanism of the present invention; Figure 4 It is a schematic diagram of the structure of the glass tube palletizing state of the present invention; Figure 5 It is a structural schematic diagram of the offset mechanism of the present invention; Figure 6 It is a structural schematic diagram of the fixing plate of the present invention; Figure 7 It is a structural schematic diagram of the second gear of the present invention; Figure 8 It is a structural schematic diagram of the first gear of the present invention; Figure 9 It is a schematic diagram of the structure of the limiting convex plate of the present invention.

[0020] icon: 100, transmission mechanism; 110, frame; 120, unwinding belt; 121, spacer; 130, motor; 131, first roller; 140, second roller; 150, limit roller; 160, cylinder; 161, crossbar; 170, slide; 180, guide rod; 190, first tension spring; 200, receiving mechanism; 210, chain; 220, receiving frame; 230, hydraulic cylinder; 240, lifting plate; 300, offset mechanism; 310, fixed plate; 320, turntable; 321, offset Core rod; 322, second rack; 323, second gear; 330, second connecting rod; 331, first connecting rod; 332, first rack; 333, sliding groove; 340, limiting rod; 350, first gear; 360, first wedge block; 370, second wedge block; 380, second tension spring; 390, first hydraulic rod; 391, connecting pipe; 392, second hydraulic rod; 393, limiting convex plate; 400, feeding mechanism; 410, feeding rack; 420, conveyor belt; 430, limiting block. DETAILED DESCRIPTION

[0021] The technical solution of the present invention will be described clearly and completely below in conjunction with the accompanying drawings. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0022] In the description of the present invention, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "straight", "inner", "outer", etc., indicating the orientation or positional relationship, are based on the orientation or positional relationship shown in the drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as limiting the present invention. In addition, the terms "first", "second", and "third" are used for descriptive purposes only, and cannot be understood as indicating or implying relative importance.

[0023] In the description of the present invention, it should be noted that unless otherwise clearly specified and defined, the terms "installation", "connection", and "coupling" should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium, and it can be the communication inside two components. For those of ordinary skill in the art, the specific meanings of the above terms in the present invention can be understood according to specific situations.

[0024] An embodiment is as follows Figures 1-9 As shown, a glass tube palletizing device includes a transfer mechanism 100 and a receiving mechanism 200. The transfer mechanism 100 includes a frame 110. A sliding seat 170 is slidably connected to the frame 110, and a first roller 131 is rotatably connected to the frame 110 by a fixed shaft. A second roller 140 is rotatably connected to the sliding seat 170. A feeding belt 120 is drivingly connected between the first roller 131 and the second roller 140. A cross bar 161 is inserted through the middle of the feeding belt 120. The cross bar 161 can slide vertically on the frame 110. When the frame 110 slides downwards, the first roller 131 is locked to the frame 110, and the second roller 140 slides linearly and approaches the first roller 131, so that the upper straight part of the feeding belt 120 is shortened, so that the glass tubes on the feeding belt 120 are released onto the receiving mechanism 200.

[0025] The feeding belt 120 is divided into a working section and a non-working section by the first roller 131 and the second roller 140. The working section is located above the non-working section and is used to carry glass tubes.

[0026] The working mechanism of the glass tube palletizing device provided in this embodiment is as follows: The glass tubes to be palletized are located on the upper part of the feeding belt 120. The feeding belt 120 is inclined, and a plurality of partition strips 121 are arranged on its surface. The glass tubes are located between two adjacent partition strips 121. There is a large enough frictional force between the first roller 131 and the second roller 140 and the feeding belt 120, and they will not slip relative to the feeding belt 120. In the initial state, the second roller 140 is at the starting end of the palletizing of the receiving mechanism 200. The motor 130 is started to drive the feeding belt 120 to run. After the upper straight section of the feeding belt 120 is filled with glass tubes, the motor 130 stops running, and the motor 130 has a self-locking function. After the motor 130 stops running, the first roller 131 no longer rotates. Subsequently, the cross bar 161 moves vertically downwards, so that the feeding belt 120 can be pulled to deform, shortening its upper straight section. And because the first roller 131 does not rotate, when the cross bar 161 moves downwards, the second roller 140 can drive the sliding seat 170 to slide, and the second roller 140 rotates on the sliding seat 170, so that the glass tubes near the second roller 140 are released onto the receiving mechanism 200 one by one, thus completing the palletizing of the glass tubes. A horizontal plate is provided between the slide 170 and the unwinding belt 120, and the horizontal plate can prevent the glass tube from rolling too far and leaving the receiving mechanism 200. The plate surface of the horizontal plate can be perpendicular to the receiving surface of the receiving mechanism 200, so that the glass tube falls vertically on the receiving mechanism 200, thereby preventing the bottom layer of glass tubes from rolling when placed; It also includes a feeding mechanism 400, which can be the end of the production line or a separate end connected to the production line. The feeding mechanism 400 includes a feeding frame 410, which is connected to a conveyor belt 420 in a transmission manner. A plurality of groups of limit blocks 430 are arranged in an array on the conveyor belt 420, and a glass tube is placed between each group of limit blocks 430. The output end of the conveyor belt 420 is close to the input end of the conveyor belt 420. When the cross bar 161 moves downward, the conveyor belt 420 stops running. After the cross bar 161 is reset, the conveyor belt 420 continues to run, and at this time, the motor 130 is also running to transfer the glass tube on the conveyor belt 420 to the end close to the second roller 140. In addition, a grating switch may also be provided at the motor 130. If the grating switch detects that the conveyor belt 420 is unloaded, the motor 130 does not operate. The working mechanism of the grating switch is similar to that of an induction door.

[0027] Among the optional methods of this embodiment, the more preferred ones are: The transmission mechanism 100 further includes a limiting roller 150 which is fixedly rotated on the frame 110 , and the limiting roller 150 is in contact with the lower surface of the lower straight section of the unwinding belt 120 .

[0028] The setting of the limiting roller 150 allows the overall shape of the unloading belt 120 to change into a "T" shape instead of a triangle when the cross bar 161 moves downward, thereby avoiding the lower straight part of the unloading belt 120 contacting the receiving mechanism 200 when unloading the material and causing interference with the stacking of the glass tubes.

[0029] Among the optional methods of this embodiment, the more preferred ones are: Two cylinders 160 are fixedly connected to both sides of the frame 110 , and output ends of the two cylinders 160 are connected to two ends of the cross bar 161 .

[0030] The two ends of the cross bar 161 are rotatably connected to the two cylinders 160 respectively. When the cylinder 160 is extended or retracted, the cross bar 161 can roll relative to the unloading belt 120. The control system detects that after the motor 130 rotates to a set number of circles, the upper straight section of the unloading belt 120 is full of glass tubes. At this time, the control system controls the cylinder 160 to shorten, and the cylinder 160 shortens to the shortest distance and then extends, so that the glass tubes on the unloading belt 120 are released.

[0031] Among the optional methods of this embodiment, the more preferred ones are: A guide rod 180 is fixedly connected to the sliding seat 170. A guide hole matching the guide rod 180 is provided on the frame 110. A first tension spring 190 is fixedly connected between the end of the guide rod 180 and the frame 110.

[0032] The guide rod 180 linearly slides on the frame 110 to guide the movement of the second roller 140, so that the vertical distance between the second roller 140 and the receiving mechanism 200 does not change, ensuring the stability of the glass tube during release. When the cylinder 160 extends, the first tension spring 190 pulls the guide rod 180 to reset, causing the second roller 140 to reset. In addition, the guide rod 180 can also be replaced by another cylinder 160.

[0033] Regarding the structure of the offset mechanism 300, specifically: The offset mechanism 300 is connected to the transmission mechanism 100. The offset mechanism 300 includes a limiting rod 340 rotatably connected to the frame 110. The limiting rod 340 abuts against the end of the guide rod 180. After the sliding seat 170 slides towards the first roller 131, the limiting rod 340 slides a distance equal to the radius of the glass tube.

[0034] When stacking glass tubes, the upper and lower layers of glass tubes need to be staggered. Therefore, after each layer of glass tubes is stacked, the starting point of the feeding tape 120 needs to be changed. When the second roller 140 slides towards the first roller 131 to the end of the stroke, it indicates that the glass tubes on the feeding tape 120 have been released. At this time, the limiting rod 340 extends or retracts, so that the position of the guide rod 180 after being pulled back by the first tension spring 190 has a gap equal to the radius of a glass tube compared to its previous position. As a result, the position of the feeding section of the feeding tape 120 changes, ensuring that each glass tube in the second layer released subsequently can be located between two adjacent glass tubes on the lower side of the previously released glass tubes, guaranteeing the stability of the stacked glass tubes. In addition, when the initial feeding position of the feeding tape 120 retracts compared to before, the number of load-bearing glass tubes in its upper horizontal section decreases by one accordingly, so as to ensure that the number of glass tubes stacked on the upper part of the lower-layer glass tubes decreases by one accordingly.

[0035] In an alternative embodiment of the present invention, a more preferred way is: A second wedge block 370 is fixedly connected to the end of the limiting rod 340. A first wedge block 360 is fixedly connected to the frame 110. The second wedge block 370 can rotate relative to the first wedge block 360. When the second wedge block 370 rotates 90 degrees relative to the first wedge block 360, the highest point of the second wedge block 370 contacts the highest point of the first wedge block 360 or the highest point of the second wedge block 370 contacts the lowest point of the first wedge block 360.

[0036] Refer to Figure 5 and Figure 8, the sliding seat 170 slides synchronously with the second roller 140. When the sliding seat 170 slides to near the end of the stroke close to the first roller 131, the limiting rod 340 rotates 90 degrees. The first wedge 360 is fixedly arranged. When the limiting rod 340 rotates 90 degrees, it can drive the second wedge 370 to rotate 90 degrees. Both the first wedge 360 and the second wedge 370 have two symmetrically arranged peaks. When the limiting rod 340 rotates, the peaks of the two wedges can face each other, or the peaks of the two wedges are respectively butted against the opposite valleys. When the peaks face each other, the limiting rod 340 slides in a direction away from the guide rod 180. When the peak is butted against the valley, the limiting rod 340 slides in a direction close to the guide rod 180. The peak height can be set to the radius distance height of the glass tube; Among them, when the inclined surfaces of the first wedge 360 and the second wedge 370 are in contact, it is the first state. At this time, the distance between the limiting rod 340 and the first roller 131 is small; when the vertices of the first wedge 360 and the second wedge 370 are in contact with each other, it is the second state. At this time, the distance between the limiting rod 340 and the first roller 131 is large, and the moving distance of the above-mentioned limiting rod 340 is equal to the radius length of the glass tube.

[0037] In an alternative embodiment of the present embodiment, preferably: The offset mechanism 300 further includes a driving unit. The driving unit includes a fixing plate 310 connected to the frame 110. The middle of the fixing plate 310 is rotatably connected with a turntable 320 through a one-way bearing. The upper surface of the turntable 320 is fixedly connected with an eccentric rod 321. A second connecting rod 330 is linearly slidably connected to the fixing plate 310. One end of the second connecting rod 330 is fixedly connected with a sliding groove 333, and the other end is hinged with two symmetrically arranged first connecting rods 331. The eccentric rod 321 slides in the sliding groove 333; the ends of the two first connecting rods 331 are both hinged with a first rack 332. The first rack 332 linearly slides on the frame 110. There are two limiting rods 340, and the ends of the two limiting rods 340 are both fixedly connected with a first gear 350. The two first racks 332 are respectively meshed with the two first gears 350; a second tension spring 380 is connected between the first gear 350 and the frame 110.

[0038] The turntable 320 is rotatably connected to the fixing plate 310 through a one-way bearing, ensuring that the turntable 320 will not reverse under the pulling force of the sliding groove 333. When the sliding seat 170 slides back and forth once, the feeding belt 120 releases a layer of glass tubes, and at the same time, it can drive the turntable 320 to rotate less than and close to 180 degrees. At this time, the eccentric rod 321 is in a position close to or away from the first rack 332. Figure 6In the When the eccentric rod 321 is in a position not exceeding the nine o'clock position of the turntable 320, the second link 330 may pull the eccentric rod 321 through the sliding groove 333 to the nine o'clock position due to the force of the second tension spring 380, and the turntable 320 is driven to rotate an angle less than and close to 180 degrees, so it will not move to the three o'clock position of the turntable 320, but only approach the three o'clock position in the clockwise direction; When the turntable 320 rotates, it can drive the second link 330 to linearly slide on the fixed plate 310 through the sliding groove 333. When the second link 330 slides, it can drive the angle between the two first links 331 to change, so that the two first racks 332 approach or move away from each other, and then the two first racks 332 drive the two first gears 350 to rotate, thereby changing the position of the limiting rod 340.

[0039] In an alternative embodiment of the present embodiment, preferably: The driving unit further includes a second rack 322 fixedly connected to the sliding seat 170. The lower surface of the turntable 320 is rotatably connected to a second gear 323 through a one-way bearing, and the second rack 322 meshes with the second gear 323.

[0040] When the sliding seat 170 slides towards the first roller 131 and approaches the first roller 131, the second rack 322 connected to the sliding seat 170 can mesh with the second gear 323 that rotates unidirectionally on the turntable 320 and drive the second gear 323 to drive the turntable 320 to rotate. When the sliding seat 170 slides away from the first roller 131, the second rack 322 drives the second gear 323 to rotate relative to the turntable 320, and at this time the turntable 320 does not rotate, thereby realizing the one-way rotation of the turntable 320, and then the turntable 320 drives the second link 330 to linearly reciprocate.

[0041] In an alternative embodiment of the present embodiment, preferably: A first hydraulic rod 390 is fixedly connected to the fixed plate 310, a second hydraulic rod 392 is fixedly connected to the frame 110, a connecting pipe 391 is connected between the first hydraulic rod 390 and the second hydraulic rod 392, the sliding groove 333 abuts against the first hydraulic rod 390, and a limiting convex plate 393 is provided on the cylinder rod of the cylinder 160. When the second hydraulic rod 392 extends, it can abut against the limiting convex plate 393.

[0042] When the sliding groove 333 slides toward the first hydraulic rod 390 and presses the first hydraulic rod 390, the unloading end of the unloading belt 120 is closer to the first roller 131 than before. At this time, the distance between the first roller 131 and the second roller 140 is shortened. To prevent the unloading belt 120 from loosening, the cylinder 160 is not fully extended at this time. When the first hydraulic rod 390 is pressurized, the hydraulic oil is transmitted to the second hydraulic rod 392 through the connecting pipe 391. The second hydraulic rod 392 is extended to block the upward movement of the limiting convex plate 393, so that the cylinder 160 will not be fully extended.

[0043] Regarding the structure of the receiving mechanism 200, specifically: The receiving mechanism 200 includes a chain 210 that is driven in the frame 110, a receiving frame 220 is placed on the chain 210, a hydraulic cylinder 230 is fixedly connected to the receiving frame 220, and a lifting plate 240 is fixedly connected to the output end of the hydraulic cylinder 230. The glass tubes are arranged and stacked on the lifting plate 240, and when the cylinder 160 is extended and retracted once, the hydraulic cylinder 230 is shortened so that the lifting plate 240 is lowered to a height of a glass tube diameter.

[0044] Reference Figure 3 and Figure 4 The chain 210 is driven in the frame 110, and the receiving frame 220 is placed on the chain 210. When the cylinder 160 is extended and retracted once, the glass tubes are stacked on the lifting plate 240 in one layer. Then the hydraulic cylinder 230 is shortened, so that the lifting plate 240 is lowered to a height of a glass tube diameter, so as to facilitate the receiving of the glass tubes of the next layer. In addition, it should be noted that when the lifting plate 240 is at the initial height position, the distance between its upper surface and the lowest point of the unloading belt 120 is slightly greater than the length of a glass tube diameter. When the hydraulic cylinder 230 is shortened to the shortest length, the storage space of the lifting plate 240 is filled, and the chain 210 is running to transport the receiving frame 220 out of the unloading range of the unloading belt 120, and then a new receiving frame 220 is placed on the chain 210 and placed in the unloading range of the unloading belt 120 to continue receiving the glass tubes.

[0045] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention, rather than to limit it. Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that they can still modify the technical solutions described in the aforementioned embodiments, or replace some or all of the technical features therein with equivalents. However, these modifications or replacements do not cause the essence of the corresponding technical solutions to deviate from the scope of the technical solutions of the embodiments of the present invention.

Claims

1. A glass tube palletizing device, characterized in that: It includes a transfer mechanism (100) and a receiving mechanism (200); The transfer mechanism (100) includes a first roller (131), a second roller (140), a feeding belt (120) and a cross bar (161). The first roller (131) and the second roller (140) are drivingly connected through the feeding belt (120), and the feeding belt (120) is separated into a working section on the upper surface and a non-working section on the lower surface; the working section is used to carry glass tubes, and the non-working section is connected to the cross bar (161); The cross bar (161) is configured to be able to move vertically to drive the non-working section downward, and then the feeding belt (120) drives the second roller (140) to move towards the first roller (131), so that the working section is shortened, and the glass tubes on the working section fall into the receiving mechanism (200) one by one.

2. The glass tube palletizing device according to claim 1, wherein: The transfer mechanism (100) further includes a limiting roller (150), and the limiting roller (150) is arranged between the second roller (140) and the cross bar (161) and fits with the lower surface of the non-working section.

3. The glass tube palletizing device according to claim 2, wherein: The transfer mechanism (100) includes a frame (110), and a sliding seat (170) is slidably connected to the frame (110); The second roller (140) is rotatably installed on the sliding seat (170), and a guide rod (180) is arranged on the sliding seat (170).

4. The glass tube palletizing device according to claim 3, characterized in that: The transfer mechanism (100) further includes a first tension spring (190); One end of the first tension spring (190) is connected to the guide rod (180), and the other end is connected to the frame (110), and is used to apply a pulling force to the guide rod (180).

5. The glass tube palletizing device according to claim 4, characterized in that: It further includes an offset mechanism (300), and the offset mechanism (300) includes a first limiting unit, and the first limiting unit includes a limiting rod (340); The limiting rod (340) is used to abut against the sliding seat (170) to limit the distance that the sliding seat (170) moves away from the first roller (131), and the end of the limiting rod (340) away from the sliding seat (170) abuts against the guide rod (180).

6. The glass tube palletizing device according to claim 5, wherein: The first limiting unit further includes a first wedge block (360), a second wedge block (370) and a second tension spring (380); The first wedge block (360) is fixedly installed on the frame (110), the second wedge block (370) is connected to the limiting rod (340), and the second tension spring (380) is connected to the second wedge block (370); Both the first wedge block (360) and the second wedge block (370) are provided with inclined surfaces, and the second tension spring (380) is configured to apply a pulling force to the second wedge block (370) so that the two inclined surfaces abut against each other; The second wedge block (370) is configured to be able to rotate around its own axis to switch the two inclined surfaces between a first state and a second state, and then move the limiting rod (340); In the first state, the two inclined surfaces are parallel and fit; In the second state, the vertices of the two inclined planes are in contact with each other; when the second wedge block (370) rotates 90 degrees relative to the first wedge block (360), the first state switches to the second state, and the limiting rod (340) moves away from the first roller (131), causing the slide block (170) to slide a length equal to the radius of a glass tube in the direction of the limiting rod (340).

7. The glass tube palletizing device according to claim 6, wherein: The offset mechanism (300) further includes a driving unit, and the driving unit includes a first gear (350), a first rack (332), a first connecting rod (331), a second connecting rod (330), and a turntable (320); The first gear (350) is connected to the second wedge block (370) and is used to drive the second wedge block (370) to rotate about its own axis; The first rack (332) meshes with the first gear (350) and is configured to move in a second direction to drive the first gear (350) to rotate forward and backward. The second direction is perpendicular to the first direction, and the sliding direction of the slide block (170) is the first direction; One end of the first connecting rod (331) is hinged to the first rack (332), and the other end is hinged to the second connecting rod (330). An eccentric rod (321) is provided on the turntable (320), and a sliding groove (333) is provided on the second connecting rod (330); the eccentric rod (321) is inserted into the sliding groove (333) and slides along the sliding groove (333); The turntable (320) is configured to rotate about its own axis so that the eccentric rod (321) drives the second connecting rod (330) to move in the second direction, and then drives the first rack (332) to move through the first connecting rod (331), so that the first rack (332) drives the first gear (350) to rotate, so as to change the position of the limiting rod (340).

8. The glass tube palletizing device according to claim 7, wherein: The driving unit further includes a second gear (323), a second rack (322), and a fixing plate (310); The turntable (320) is rotatably mounted on the fixing plate (310) through a one-way bearing. The second gear (323) is connected to the turntable (320) through a one-way bearing. The second rack (322) meshes with the second gear (323) and is connected to the slide block (170); The second rack (322) reciprocates in the first direction under the drive of the slide block (170) to drive the second gear (323) to rotate forward and backward, and then drives the turntable (320) to rotate in one direction, and the turntable (320) drives the second connecting rod (330) to slide linearly back and forth.

9. The glass tube stacking device according to claim 8, wherein: The offset mechanism (300) further includes a second limiting unit, and the second limiting unit includes a first hydraulic rod (390), a second hydraulic rod (392), a connecting pipe (391), and a limiting convex plate (393); The first hydraulic rod (390) is installed on the fixed plate (310), the second hydraulic rod (392) is installed on the frame (110), and the rodless chambers of the first hydraulic rod (390) and the second hydraulic rod (392) are communicated through a connecting pipe (391); The transmission mechanism (100) further includes a cylinder (160). The extending end of the cylinder (160) is connected to the cross bar (161) and is used to drive the cross bar (161) to move in the vertical direction. The limit convex plate (393) is installed at the extending end of the cylinder (160); After the second connecting rod (330) moves towards the direction close to the first roller (131) until it abuts against the extending end of the first hydraulic rod (390) and continues to move, the extending end of the second hydraulic rod (392) extends and is located above the limit convex plate (393) to limit the upward movement distance of the limit convex plate (393).

10. The glass tube palletizing device according to any one of claims 1-9, characterized in that: The receiving mechanism (200) includes a conveying unit and a carrying unit; The carrying unit is placed on the conveying unit, and the conveying unit is used to convey the carrying unit; The carrying unit includes a receiving frame (220), a hydraulic cylinder (230) and a lifting plate (240); the receiving frame (220) is provided with an accommodating space for accommodating a glass tube, and the lifting plate (240) is arranged in the accommodating space; The hydraulic cylinder (230) is installed on the receiving frame (220), and the extending end of the hydraulic cylinder (230) is connected to the lifting plate (240); the hydraulic cylinder (230) drives the lifting plate (240) to move in the vertical direction to receive the falling glass tube.

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