Variable-pitch furling device

Abstract

The utility model provides a variable-pitch gathering device which comprises a base frame and a variable-pitch material moving mechanism. The variable-pitch material moving mechanism comprises a first limiting baffle, a second limiting baffle, a cross telescopic frame, a first linear driver, a first limiting assembly, a second limiting assembly, a discharging pushing assembly, at least three movable material receiving bases and material blocking assemblies in one-to-one correspondence with the movable material receiving bases. The crossed telescopic frame is provided with crossed joints which are in one-to-one correspondence with the movable material receiving seats and are sequentially distributed in the telescopic direction, and the movable material receiving seats are connected to the corresponding crossed joints in a one-to-one correspondence mode; the first linear driver is fixed to the first limiting baffle in the left-right direction, and the movable material receiving base close to the first limiting baffle is connected to the driving end of the first linear driver. The material blocking assemblies are arranged at the bottoms of the movable material receiving bases in a one-to-one correspondence mode, and when the movable material receiving bases move to the folding positions, the discharging pushing assembly can drive the material blocking assemblies on all the movable material receiving bases to release materials borne by the corresponding movable material receiving bases.

Description

Technical Field

[0001] This utility model relates to the technical field of blood collection tube sorting and packaging, and in particular to a variable-distance gathering device. Background Technology

[0002] Blood collection tubes are disposable, negative-pressure vacuum glass tubes used for quantitative blood collection. During the production process, the injection-molded blood collection tubes need to be gathered, sorted, and placed into packaging bags. Currently, this gathering and sorting is done manually. However, this manual method is slow, time-consuming, and inefficient, requiring a large workforce and severely impacting the efficiency of blood collection tube sorting and packaging. Furthermore, it carries the risk of contamination from human contact, failing to meet the demands for efficient and clean sorting and packaging.

[0003] Therefore, there is an urgent need for a variable pitch retraction device to overcome the aforementioned problems. Utility Model Content

[0004] The purpose of this utility model embodiment is to provide a variable pitch retraction device, which has the advantages of simple and compact structure, fast operation speed, replacement of manual operation and prevention of material contamination.

[0005] To achieve the above objectives, a first aspect of this utility model provides a variable-pitch retracting device, comprising: a base frame and a variable-pitch material transfer mechanism, wherein the variable-pitch material transfer mechanism comprises: a first limiting baffle, a second limiting baffle, a cross telescopic frame, a first linear driver, a first limiting component, a second limiting component, a material feeding push component, at least three movable receiving seats, and material blocking components corresponding one-to-one with the movable receiving seats.

[0006] Both the first limiting baffle and the second limiting baffle are fixed to the base frame in the front-to-back direction, and the first limiting baffle and the second limiting baffle are arranged at intervals in the left-to-right direction.

[0007] The movable receiving seats are arranged sequentially in the left-right direction between the first limiting baffle and the second limiting baffle, and the movable receiving seats are all parallel to the first limiting baffle. The movable receiving seats have dispersed positions that are far apart from each other and retracted positions that are close to each other and touch each other.

[0008] The telescopic frame is arranged in the left-right direction. The telescopic frame has cross connection points that correspond one-to-one with the movable receiving seats and are distributed sequentially along the telescopic direction. The movable receiving seats are connected one-to-one to the corresponding cross connection points.

[0009] The first limiting assembly is arranged between the first limiting baffle and the mobile material receiving seat adjacent to the first limiting baffle, and the second limiting assembly is arranged between two mobile material receiving seats closest to the first limiting baffle.

[0010] The first linear driver is fixed on the first limiting baffle in the left-right direction, and the mobile material receiving seat second closest to the first limiting baffle is connected to the driving end of the first linear driver.

[0011] The material blocking assembly is arranged at the bottom of the mobile material receiving seat one by one, and the material discharging and pushing assembly is arranged on the base frame; when the mobile material receiving seat moves to the folding position, the mobile material receiving seat adjacent to the first limiting baffle abuts against the first limiting baffle, and the material discharging and pushing assembly can drive the material blocking assembly on all mobile material receiving seats to release the material received by the corresponding mobile material receiving seat.

[0012] Optionally, a plurality of vertical material receiving channels are formed in the mobile material receiving seat.

[0013] Optionally, the material blocking assembly comprises a material blocking plate, which is movably arranged at the bottom of the mobile material receiving seat in the left-right direction, and a material passing hole corresponding to the material receiving channel is formed in the material blocking plate, and the inner diameter of the material passing hole is equal to the inner diameter of the material receiving channel; the material blocking plate has a material discharging position and a material blocking position in the moving direction, when the material blocking plate moves to the material discharging position, the material passing hole corresponds to the lower end of the corresponding material receiving channel; when the material blocking plate moves to the material blocking position, the material passing holes are all misaligned with the lower ends of the material receiving channels.

[0014] Optionally, the material blocking assembly further comprises an elastic pushing assembly, which is arranged on the mobile material receiving seat, and the elastic pushing assembly elastically drives the material blocking plate to move to the material blocking position.

[0015] Optionally, the elastic pushing assembly comprises a mounting shell, an elastic member and a sliding pushing block, the mounting shell is fixedly arranged in the mobile material receiving seat in the front-rear direction, the sliding pushing block is slidably arranged in the mounting shell in the front-rear direction, the elastic member is arranged between the bottom of the mounting shell and the sliding pushing block, one end of the sliding pushing block away from the elastic member pushes the material blocking plate, and the elastic member constantly drives the sliding pushing block to push the material blocking plate to move to the material blocking position.

[0016] Optionally, the material blocking assembly further comprises a first limiting rod and a first limiting cap, the upper end of the first limiting rod is fixedly connected to the bottom of the moving material receiving seat in vertical, an elongated limiting hole is formed on the material blocking plate in vertical, the length direction of the elongated limiting hole is arranged along the front-back direction, and the first limiting rod is slidably arranged in the elongated limiting hole; the first limiting cap is fixedly connected to the lower end of the first limiting rod, and the material blocking plate is located between the bottom of the moving material receiving seat and the first limiting cap.

[0017] Optionally, the material discharging pushing assembly comprises a second linear driver and a pushing plate, the second linear driver is fixed on the base frame along the front-back direction, and the pushing plate is fixedly connected to the driving end of the second linear driver; when the moving material receiving seat moves to the folding position, the pushing plate simultaneously pushes all the material blocking plates on the moving material receiving seat to move to the material discharging position.

[0018] Optionally, the first limiting assembly comprises a second limiting rod and a second limiting cap, one end of the second limiting rod is fixed on the moving material receiving seat adjacent to the first limiting plate along the left-right direction, the second limiting cap is fixed to the other end of the second limiting rod, the second limiting rod is movably arranged through the first limiting plate along the left-right direction, and the first limiting plate is located between the moving material receiving seat adjacent to the first limiting plate and the second limiting cap.

[0019] Optionally, the second limiting assembly comprises a third limiting rod and a third limiting cap, one end of the third limiting rod is fixed on the moving material receiving seat adjacent to the first limiting plate along the left-right direction, the third limiting cap is fixed to the other end of the third limiting rod, and the third limiting rod is movably arranged through the moving material receiving seat second close to the first limiting plate along the left-right direction, the moving material receiving seat second close to the first limiting plate is located between the moving material receiving seat adjacent to the first limiting plate and the third limiting cap.

[0020] Optionally, the cross telescopic frame comprises a plurality of connecting rods, each two connecting rods constitute a cross connecting assembly, the middle portions of the two connecting rods of each cross connecting assembly are hingedly connected to each other to form a cross connecting portion, and the end portions of the connecting rods of adjacent two cross connecting assemblies are hingedly connected to each other.

[0021] The first limiting baffle and the second limiting baffle of the distance-variable folding device are fixed on the base frame along the front-rear direction, and the first limiting baffle and the second limiting baffle are arranged in a spaced-apart manner along the left-right direction. The movable receiving seats are sequentially arranged between the first limiting baffle and the second limiting baffle along the left-right direction, and the movable receiving seats are parallel to the first limiting baffle. The movable receiving seats have dispersed positions away from each other and folding positions close to each other. The telescopic direction of the cross telescopic frame is arranged along the left-right direction. The cross telescopic frame has cross connection positions corresponding to the movable receiving seats and sequentially arranged along the telescopic direction. The movable receiving seats are connected to the corresponding cross connection positions one by one. The first limiting assembly is arranged between the movable receiving seat adjacent to the first limiting baffle and the first limiting baffle. The second limiting assembly is arranged between the two movable receiving seats closest to the first limiting baffle. The first linear driver is fixed on the first limiting baffle along the left-right direction. The movable receiving seat second closest to the first limiting baffle is connected to the driving end of the first linear driver. The material blocking assembly is arranged at the bottom of the movable receiving seat one by one. The material discharging and pushing assembly is arranged on the base frame. When the movable receiving seat moves to the folding position, the movable receiving seat adjacent to the first limiting baffle is in contact with the first limiting baffle. The material discharging and pushing assembly can drive the material blocking assembly on all the movable receiving seats to release the material received by the corresponding movable receiving seat. Then, the movable receiving seat second closest to the first limiting baffle is pushed by the driving end of the first linear driver to move away from the first limiting baffle. When the distance between the movable receiving seat adjacent to the first limiting baffle and the first limiting baffle reaches the limiting stroke of the first limiting assembly, the first limiting assembly limits and prevents the movable receiving seat adjacent to the first limiting baffle from moving away from the first limiting baffle. The driving end of the first linear driver continues to push the movable receiving seat second closest to the first limiting baffle to move away from the first limiting baffle, so that the cross telescopic frame is unfolded and elongated to pull all the movable receiving seats away from each other until the distance between the two movable receiving seats closest to the first limiting baffle reaches the limiting stroke of the second limiting assembly. The second limiting assembly limits and prevents the movable receiving seat second closest to the first limiting baffle from moving away from the first limiting baffle. All the movable receiving seats move to the dispersed positions and can receive the material. Then, the movable receiving seat second closest to the first limiting baffle is pushed by the driving end of the first linear driver to move towards the first limiting baffle, so that the distance between the two movable receiving seats closest to the first limiting baffle is continuously reduced. The cross telescopic frame is closed and shortened to pull all the movable receiving seats close to each other until the movable receiving seat adjacent to the first limiting baffle is in contact with the first limiting baffle. All the movable receiving seats move to the folding position, and the material blocking assembly on all the movable receiving seats is released by the material discharging and pushing assembly.Thus, the mechanical automation is realized to collect the materials in the dispersed positions to the close positions, the structure is simple and compact, the manual collection and arrangement of the materials are replaced, the operation speed is greatly improved, the operation time is reduced, the efficiency is greatly improved, the occupation of the labor is reduced, the material collection and arrangement packaging efficiency is improved, the human participation is not needed, the human contact is avoided, the pollution risk of the materials is prevented, the high-efficiency and clean collection and arrangement packaging demand can be better met. BRIEF DESCRIPTION OF DRAWINGS

[0022] Figure 1 It is a combined three-dimensional schematic view of the variable-distance collecting device in the embodiment of the utility model.

[0023] Figure 2 It is a combined three-dimensional schematic view of the movable material receiving seat and the material blocking assembly of the variable-distance collecting device in the embodiment of the utility model.

[0024] Figure 3 It is an exploded view of Figure 2 . DETAILED DESCRIPTION

[0025] The utility model will be further described below in combination with the drawings and preferred embodiments, but the implementation of the utility model is not limited to this.

[0026] Please refer to Figures 1 to 3The variable-distance folding device 100 comprises a base frame 10 and a variable-distance material moving mechanism 20. The variable-distance material moving mechanism 20 comprises a first limiting baffle 21, a second limiting baffle 22, a cross telescopic frame 23, a first linear driver 24, a first limiting assembly (not marked in the figure), a second limiting assembly (not marked in the figure), a material discharging and pushing assembly 27, at least three movable material receiving seats 28, and a material blocking assembly 29 corresponding to each movable material receiving seat 28. The first limiting baffle 21 and the second limiting baffle 22 are both fixed on the base frame 10 along the front-rear direction, and the first limiting baffle 21 and the second limiting baffle 22 are arranged at intervals along the left-right direction. The movable material receiving seats 28 are sequentially arranged between the first limiting baffle 21 and the second limiting baffle 22 along the left-right direction, and the movable material receiving seats 28 are all parallel to the first limiting baffle 21. The movable material receiving seats 28 have dispersed positions away from each other and a folding position close to each other. Thus, all the movable material receiving seats 28 are limited to move between the first limiting baffle 21 and the second limiting baffle 22 by the limiting and blocking effect of the first limiting baffle 21 and the second limiting baffle 22. The telescopic direction of the cross telescopic frame 23 is arranged along the left-right direction, and the cross telescopic frame 23 has cross connection positions 231 corresponding to the movable material receiving seats 28 and sequentially distributed along the telescopic direction. The movable material receiving seats 28 are connected to the corresponding cross connection positions 231 one by one. The first limiting assembly is arranged between the movable material receiving seat 28 adjacent to the first limiting baffle 21 and the first limiting baffle 21, so as to limit the maximum moving distance between the movable material receiving seat 28 adjacent to the first limiting baffle 21 and the first limiting baffle 21 along the left-right direction by the first limiting assembly. The second limiting assembly is arranged between the two movable material receiving seats 28 closest to the first limiting baffle 21, so as to limit the maximum moving distance between the two movable material receiving seats 28 closest to the first limiting baffle 21 along the left-right direction by the second limiting assembly. The first linear driver 24 can be a gas cylinder, but is not limited thereto. The first linear driver 24 is fixed on the first limiting baffle 21 along the left-right direction, and the movable material receiving seat 28 second closest to the first limiting baffle 21 is connected to the driving end of the first linear driver 24. The material blocking assembly 29 is arranged at the bottom of the movable material receiving seat 28 one by one, so as to block the material received by the movable material receiving seat 28 by the material blocking assembly 29. Furthermore, the material discharging and pushing assembly 27 is arranged on the base frame 10. When the movable material receiving seat 28 moves to the folding position, the movable material receiving seat 28 adjacent to the first limiting baffle 21 is in contact with the first limiting baffle 21, and the material discharging and pushing assembly 27 can drive the material blocking assembly 29 on all the movable material receiving seats 28 to release the material received by the corresponding movable material receiving seat 28.When the first linear driver 24 drives the end to push the mobile receiving seat 28 closest to the first limiting baffle 21 away from the first limiting baffle 21, when the distance between the mobile receiving seat 28 adjacent to the first limiting baffle 21 and the first limiting baffle 21 reaches the limiting stroke of the first limiting assembly, the first limiting assembly restricts and prevents the mobile receiving seat 28 adjacent to the first limiting baffle 21 from moving away from the first limiting baffle 21; the first linear driver 24 continues to drive the end to push the mobile receiving seat 28 closest to the first limiting baffle 21 away from the first limiting baffle 21, so that the cross telescopic frame 23 is expanded and elongated to pull all the mobile receiving seats 28 away from each other, until the distance between the two mobile receiving seats 28 closest to the first limiting baffle 21 reaches the limiting stroke of the second limiting assembly, the second limiting assembly restricts and prevents the mobile receiving seat 28 closest to the first limiting baffle 21 from moving away from the first limiting baffle 21, all the mobile receiving seats 28 are moved to the dispersed position, and the material can be received by the mobile receiving seat 28. Then the first linear driver 24 drives the end to push the mobile receiving seat 28 closest to the first limiting baffle 21 towards the first limiting baffle 21, so that the distance between the two mobile receiving seats 28 closest to the first limiting baffle 21 is continuously reduced, that is, the cross telescopic frame 23 is closed and shortened to pull all the mobile receiving seats 28 towards each other, until the mobile receiving seat 28 adjacent to the first limiting baffle 21 abuts against the first limiting baffle 21, so that all the mobile receiving seats 28 are moved to the folded position, and the material receiving assembly 29 on all the mobile receiving seats 28 is driven by the material pushing assembly 27 to release the material received by the corresponding mobile receiving seat 28. Thus, the material is dispersed and received in the dispersed position and then folded to the close position, the structure is simple and compact, manual folding and arranging of the material is replaced, the operation speed is greatly improved, the operation time is reduced, the efficiency is greatly improved, the occupation of labor is reduced, the efficiency of arranging and folding the material is improved, human intervention is not required, human contact is avoided, the risk of pollution of the material is prevented, and the high-efficiency and clean arranging and packaging demand is better met.

[0027] The mobile receiving seat 28 is provided with a plurality of vertical receiving channels 281 for accommodating the received material.

[0028] Further, in the embodiment, the material blocking assembly 29 comprises a material blocking plate 291, an elastic pushing assembly 292, a first limiting rod 294 and a first limiting cap 295. The material blocking plate 291 is arranged at the bottom of the moving material receiving seat 28 and moves along the left-right direction. The material blocking plate 291 is provided with a material passing hole 2911 corresponding to each of the material receiving channels 281. The inner diameter of the material passing hole 2911 is equal to the inner diameter of the material receiving channel 281. The material blocking plate 291 has a discharging position and a material blocking position along the moving direction. When the material blocking plate 291 moves to the discharging position, the material passing hole 2911 corresponds to and faces the lower end of the corresponding material receiving channel 281. The material in the material receiving channel 281 can fall out of the material passing hole 2911. When the material blocking plate 291 moves to the material blocking position, the material passing hole 2911 is offset from the lower end of the material receiving channel 281. At this time, the material blocking plate 291 blocks the lower end of the material receiving channel 281 to block the material in the material receiving channel 281.

[0029] Further, in the embodiment, the material blocking assembly 29 further comprises the elastic pushing assembly 292 arranged on the moving material receiving seat 28. The elastic pushing assembly 292 elastically drives the material blocking plate 291 to move to the material blocking position. In detail, the specific structure of the elastic pushing assembly 292 can be selected as follows. The elastic pushing assembly 292 comprises a mounting shell 2921, an elastic member (not shown) and a sliding pushing block 2922. The mounting shell 2921 is fixedly arranged in the groove of the moving material receiving seat 28 along the front-rear direction. The sliding pushing block 2922 is slidably arranged in the mounting shell 2921 along the front-rear direction. The elastic member can be a spring. The elastic member is compressed and abuts between the bottom of the mounting shell 2921 and the sliding pushing block 2922. The end of the sliding pushing block 2922 away from the elastic member pushes the material blocking plate 291. The elastic member constantly drives the sliding pushing block 2922 to push the material blocking plate 291 to move to the material blocking position. This can realize the elastic driving of the material blocking plate 291 to move to the material blocking position. The material blocking plate 291 can automatically reset and move to the material blocking position. The structure is more simple and reasonable. Further, the upper end of the first limiting rod 294 is vertically and fixedly connected to the bottom of the moving material receiving seat 28. The material blocking plate 291 is provided with a vertical and long limiting hole 2912. The length direction of the long limiting hole 2912 is arranged along the front-rear direction. The first limiting rod 294 is slidably arranged in the long limiting hole 2912. The movement stroke of the material blocking plate 291 is limited by the limiting cooperation between the first limiting rod 294 and the long limiting hole 2912. The structure is more safe and reasonable. The first limiting cap 295 is fixedly connected to the lower end of the first limiting rod 294. The material blocking plate 291 is located between the bottom of the moving material receiving seat 28 and the first limiting cap 295. The material blocking plate 291 is limited between the bottom of the moving material receiving seat 28 and the first limiting cap 295 by the first limiting cap 295. This prevents the material blocking plate 291 from falling out downward. The structure is more safe and reasonable.

[0030] Furthermore, in the embodiment, the material discharging pushing assembly 27 comprises a second linear actuator 271 and a pushing plate 272. The second linear actuator 271 can be a cylinder, but is not limited thereto. The second linear actuator 271 is fixed to the base frame 10 in the front-rear direction. The pushing plate 272 is fixedly connected to the driving end of the second linear actuator 271. When the movable material receiving seat 28 moves to the folding position, the pushing plate 272 simultaneously pushes all the material blocking plates 291 on the movable material receiving seat 28 to the material discharging position. Thus, the material blocking plates 291 on the movable material receiving seat 28 are simultaneously pushed to release the material received by the material receiving channel 281 on the corresponding movable material receiving seat 28 in the folding position, and the structure is more simple and reasonable.

[0031] Furthermore, the first limiting assembly comprises a second limiting rod 251 and a second limiting cap (not shown in the figure). One end of the second limiting rod 251 is fixed to the movable material receiving seat 28 adjacent to the first limiting baffle 21 in the left-right direction. The second limiting cap is fixed to the other end of the second limiting rod 251. The second limiting rod 251 movably penetrates the first limiting baffle 21 in the left-right direction. The movable material receiving seat 28 adjacent to the first limiting baffle 21 is located between the first limiting baffle 21 and the second limiting cap. Through the limiting action of the second limiting rod 251 and the second limiting cap, the movement stroke of the movable material receiving seat 28 adjacent to the first limiting baffle 21 in the left-right direction is limited within the limiting stroke formed by the second limiting rod 251 and the second limiting cap, and the structure is more simple and reasonable.

[0032] Furthermore, the second limiting assembly comprises a third limiting rod 261 and a third limiting cap (not shown in the figure). One end of the third limiting rod 261 is fixed to the movable material receiving seat 28 adjacent to the first limiting baffle 21 in the left-right direction. The third limiting cap is fixed to the other end of the third limiting rod 261. The third limiting rod 261 movably penetrates the movable material receiving seat 28 second closest to the first limiting baffle 21 in the left-right direction. The movable material receiving seat 28 second closest to the first limiting baffle 21 is located between the movable material receiving seat 28 adjacent to the first limiting baffle 21 and the third limiting cap. Through the limiting action of the third limiting rod 261 and the third limiting cap, the movement stroke of the movable material receiving seat 28 second closest to the first limiting baffle 21 in the left-right direction is limited within the limiting stroke formed by the second limiting rod 251 and the second limiting cap, and the structure is more simple and reasonable. Through the limiting action of the first limiting assembly and the second limiting assembly, the movement stroke of the movable material receiving seat 28 adjacent to the first limiting baffle 21 in the left-right direction is limited, and the maximum interval stroke between the two movable material receiving seats 28 closest to the first limiting baffle 21 is limited, and the structure is more simple and reasonable.

[0033] In detail, in the embodiment, the cross telescopic frame 23 comprises a plurality of connecting rods 2321, every two connecting rods 2321 form a cross connecting assembly 232, the middle portions of the two connecting rods 2321 of every cross connecting assembly 232 are hinged to each other to form a cross connecting portion 231, and the end portions of the connecting rods 2321 of two adjacent cross connecting assemblies 232 are hinged to each other correspondingly. Thus, the cross telescopic frame 23 can be stretched or compressed, and the structure is more simple and reasonable.

[0034] Alternatively, in the embodiment, four moving material receiving seats 28 are arranged between the first limiting baffle 21 and the second limiting baffle 22, but the number of the moving material receiving seats 28 is not limited, and the number can be selected according to actual use requirements, which are all within the protection scope of the utility model, and thus will not be described in detail here.

[0035] Alternatively, in order to meet the use requirements, as shown in FIG. Figure 1 two groups of variable-distance material moving mechanisms 20 are arranged on the base frame 10, and the two groups of variable-distance material moving mechanisms 20 are arranged in opposite directions, so as to meet the requirements of folding more materials at the same time and meeting the requirements of dispersing and folding materials at different positions. However, the number of the variable-distance material moving mechanisms 20 is not limited, and the number can be selected according to actual use requirements, which are all within the protection scope of the utility model, and thus will not be described in detail here.

[0036] The working principle of the variable-distance folding device 100 will be described in detail in combination with the drawings.

[0037] Firstly, the moving material receiving seat 28 farthest from the first limiting baffle 21 is pushed by the driving end of the first linear driver 24 to move away from the first limiting baffle 21, when the distance between the moving material receiving seat 28 adjacent to the first limiting baffle 21 and the first limiting baffle 21 reaches the limiting stroke of the first limiting assembly, the first limiting assembly limits and prevents the moving material receiving seat 28 adjacent to the first limiting baffle 21 from moving away from the first limiting baffle 21; the driving end of the first linear driver 24 continues to push the moving material receiving seat 28 farthest from the first limiting baffle 21 to move away from the first limiting baffle 21, so that the cross telescopic frame 23 is unfolded and elongated to pull all the moving material receiving seats 28 to move away from each other, until the distance between the two moving material receiving seats 28 closest to the first limiting baffle 21 reaches the limiting stroke of the second limiting assembly, the second limiting assembly limits and prevents the moving material receiving seat 28 farthest from the first limiting baffle 21 from moving away from the first limiting baffle 21, and all the moving material receiving seats 28 are moved to the dispersed positions, and the materials can be received by the moving material receiving seats 28.

[0038] Then, the driving end of the first linear driver 24 pushes the two mobile material receiving seats 28 closest to the first limiting baffle 21 to move towards the first limiting baffle 21, so that the distance between the two mobile material receiving seats 28 closest to the first limiting baffle 21 is continuously reduced, that is, the cross telescopic frame 23 is driven to close and shorten to move all the mobile material receiving seats 28 close to each other until the mobile material receiving seat 28 adjacent to the first limiting baffle 21 is in contact with the first limiting baffle 21, so that all the mobile material receiving seats 28 are moved to the folding position.

[0039] Then, the driving end of the first linear driver 24 pushes the two mobile material receiving seats 28 closest to the first limiting baffle 21 to move towards the first limiting baffle 21, so that the distance between the two mobile material receiving seats 28 closest to the first limiting baffle 21 is continuously reduced, that is, the cross telescopic frame 23 is driven to close and shorten to move all the mobile material receiving seats 28 close to each other until the mobile material receiving seat 28 adjacent to the first limiting baffle 21 is in contact with the first limiting baffle 21, so that all the mobile material receiving seats 28 are moved to the folding position.

[0040] For example, the material received and folded by the variable-distance folding device 100 can be a blood collection tube, so that the blood collection tube can be automatically folded and arranged. Of course, the specific type of the material received and folded by the variable-distance folding device 100 is not limited to this, and the person skilled in the art can flexibly select according to the actual use requirement, which is within the protection scope of the present application, and therefore, it is not described in detail here.

[0041] The first limiting baffle 21 and the second limiting baffle 22 of the variable distance folding device 100 are fixed on the base frame 10 along the front-back direction, and the first limiting baffle 21 and the second limiting baffle 22 are arranged in a spaced-apart manner along the left-right direction. The movable receiving seats 28 are sequentially arranged between the first limiting baffle 21 and the second limiting baffle 22 along the left-right direction, and the movable receiving seats 28 are parallel to the first limiting baffle 21. The movable receiving seats 28 have a dispersed position away from each other and a folding position close to each other. The telescopic direction of the cross telescopic frame 23 is arranged along the left-right direction, and the cross telescopic frame 23 has cross connection positions 231 corresponding to the movable receiving seats 28 and sequentially distributed along the telescopic direction. The movable receiving seats 28 are connected to the corresponding cross connection positions 231. The first limiting assembly is arranged between the movable receiving seat 28 adjacent to the first limiting baffle 21 and the first limiting baffle 21, and the second limiting assembly is arranged between the two movable receiving seats 28 closest to the first limiting baffle 21. The first linear driver 24 is fixed on the first limiting baffle 21 along the left-right direction, and the movable receiving seat 28 second closest to the first limiting baffle 21 is connected to the driving end of the first linear driver 24. The material blocking assembly 29 is arranged at the bottom of the movable receiving seat 28, and the material discharging and pushing assembly 27 is arranged on the base frame 10. When the movable receiving seat 28 moves to the folding position, the movable receiving seat 28 adjacent to the first limiting baffle 21 is in contact with the first limiting baffle 21, and the material discharging and pushing assembly 27 can drive the material blocking assembly 29 on all movable receiving seats 28 to release the material received by the corresponding movable receiving seat 28. Then, the movable receiving seat 28 second closest to the first limiting baffle 21 is pushed by the driving end of the first linear driver 24 to move away from the first limiting baffle 21. When the distance between the movable receiving seat 28 adjacent to the first limiting baffle 21 and the first limiting baffle 21 reaches the limiting stroke of the first limiting assembly, the first limiting assembly limits and prevents the movable receiving seat 28 adjacent to the first limiting baffle 21 from moving away from the first limiting baffle 21. The driving end of the first linear driver 24 continues to push the movable receiving seat 28 second closest to the first limiting baffle 21 to move away from the first limiting baffle 21, so that the cross telescopic frame 23 is unfolded and elongated to pull all movable receiving seats 28 away from each other. When the distance between the two movable receiving seats 28 closest to the first limiting baffle 21 reaches the limiting stroke of the second limiting assembly, the second limiting assembly limits and prevents the movable receiving seat 28 second closest to the first limiting baffle 21 from moving away from the first limiting baffle 21. All movable receiving seats 28 move to the dispersed position, and the material can be received by the movable receiving seat 28.Then the first linear drive 24 of the drive end of the first limit baffle 21 second near the push distance of the moving receiving seat 28 moves to the direction close to the first limit baffle 21, so that the interval between the two moving receiving seats 28 closest to the first limit baffle 21 is constantly reduced, that is, the cross telescopic frame 23 can be driven to close and shorten to move all the moving receiving seats 28 close to each other, until the moving receiving seat 28 adjacent to the first limit baffle 21 is in contact with the first limit baffle 21, so that all the moving receiving seats 28 move to the folding position, and then the discharging push assembly 27 drives the blocking material assembly 29 on all the moving receiving seats 28 to release the material received by the corresponding moving receiving seat 28. Thus, the mechanical automation is realized to disperse the received material in the dispersed position and then fold to the close-together folding position. The structure is simple and compact, which replaces the manual folding and arranging mode of the material, greatly improves the operation speed, reduces the time consumption of the operation, greatly improves the efficiency, reduces the occupation of labor, improves the folding and packaging efficiency of the material, and avoids human contact to prevent the risk of pollution of the material, which can better meet the efficient and clean folding and packaging demand.

[0042] The utility model is described above in combination with the embodiments, but the utility model is not limited to the above disclosed embodiments, and should cover various modifications, equivalent combinations according to the essence of the utility model.

Claims

1. A variable pitch retraction device, characterized by, The utility model relates to a base frame and a variable-distance material moving mechanism, the variable-distance material moving mechanism comprises a first limiting baffle, a second limiting baffle, a cross telescopic frame, a first linear driver, a first limiting component, a second limiting component, a material discharging and pushing component, at least three moving material receiving seats and a material blocking component corresponding to the moving material receiving seat, The first limiting baffle and the second limiting baffle are fixed on the base frame along the front-back direction, and the first limiting baffle and the second limiting baffle are arranged apart along the left-right direction. The moving material receiving seats are sequentially arranged between the first limiting baffle and the second limiting baffle along the left-right direction, and the moving material receiving seats are parallel to the first limiting baffle, the moving material receiving seats have dispersed positions away from each other and folded positions close to each other. The telescopic direction of the cross telescopic frame is along the left-right direction, the cross telescopic frame has cross connection positions corresponding to the moving material receiving seats and sequentially distributed along the telescopic direction, and the moving material receiving seats are connected to the corresponding cross connection positions. The first limiting component is arranged between the moving material receiving seat adjacent to the first limiting baffle and the first limiting baffle, and the second limiting component is arranged between the two moving material receiving seats closest to the first limiting baffle. The first linear driver is fixed on the first limiting baffle along the left-right direction, and the moving material receiving seat second closest to the first limiting baffle is connected to the driving end of the first linear driver. The material blocking component is arranged at the bottom of the moving material receiving seat, the material discharging and pushing component is arranged on the base frame, when the moving material receiving seat moves to the folded position, the moving material receiving seat adjacent to the first limiting baffle is in contact with the first limiting baffle, and the material discharging and pushing component can drive the material blocking component on all moving material receiving seats to release the material received by the corresponding moving material receiving seat. A plurality of vertical material receiving channels are formed in the moving material receiving seat.

2. A variable pitch retraction device as claimed in claim 1, wherein, The material blocking component comprises a material blocking plate, the material blocking plate is arranged at the bottom of the moving material receiving seat along the left-right direction, a plurality of material passing holes corresponding to the material receiving channels are formed in the material blocking plate, and the inner diameter of the material passing hole is equal to the inner diameter of the material receiving channel; the material blocking plate has a material discharging position and a material blocking position along the moving direction, when the material blocking plate moves to the material discharging position, the material passing hole corresponding to the lower end of the corresponding material receiving channel is in communication; when the material blocking plate moves to the material blocking position, the material passing hole is offset from the lower end of the material receiving channel.

3. A variable pitch retraction device as claimed in claim 2, wherein, The material blocking component further comprises an elastic pushing component, the elastic pushing component is arranged on the moving material receiving seat, and the elastic pushing component elastically drives the material blocking plate to move to the material blocking position.

4. A variable pitch retraction device as claimed in claim 3, wherein ​ 5. A variable pitch retraction device as claimed in claim 4, wherein, The elastic pushing assembly comprises a mounting shell, an elastic member and a sliding pushing block, the mounting shell is fixedly arranged in the moving material receiving seat groove along the front-rear direction, the sliding pushing block is slidably arranged in the mounting shell along the front-rear direction, the elastic member is arranged between the bottom of the mounting shell and the sliding pushing block, one end of the sliding pushing block away from the elastic member pushes the material blocking plate, and the elastic member constantly drives the sliding pushing block to push the material blocking plate to move to the blocking position.

6. A variable pitch retraction device as claimed in claim 4, wherein, The material blocking assembly further comprises a first limiting rod and a first limiting cap, the upper end of the first limiting rod is vertically and fixedly connected to the bottom of the moving material receiving seat, the material blocking plate is formed with an elongated limiting hole vertically penetrating therethrough, the length direction of the elongated limiting hole is arranged along the front-rear direction, and the first limiting rod is slidably arranged in the elongated limiting hole; and the first limiting cap is fixedly connected to the lower end of the first limiting rod, and the material blocking plate is located between the bottom of the moving material receiving seat and the first limiting cap.

7. The variable pitch retraction device of claim 3, wherein, The material discharging pushing assembly comprises a second linear driver and a pushing plate, the second linear driver is fixedly arranged on the base frame along the front-rear direction, and the pushing plate is fixedly connected to the driving end of the second linear driver; when the moving material receiving seat moves to the folding position, the pushing plate simultaneously pushes all the material blocking plates on the moving material receiving seat to move to the discharging position.

8. A variable pitch retraction device as claimed in any one of claims 1 to 7, wherein, The first limiting assembly comprises a second limiting rod and a second limiting cap, one end of the second limiting rod is fixedly arranged on the moving material receiving seat adjacent to the first limiting baffle along the left-right direction, the second limiting cap is fixedly arranged on the other end of the second limiting rod, the second limiting rod is movably arranged through the first limiting baffle along the left-right direction, and the first limiting baffle is located between the moving material receiving seat adjacent to the first limiting baffle and the second limiting cap.

9. A variable pitch retraction device as claimed in any one of claims 1 to 7, wherein, The second limiting assembly comprises a third limiting rod and a third limiting cap, one end of the third limiting rod is fixedly arranged on the moving material receiving seat adjacent to the first limiting baffle along the left-right direction, the third limiting cap is fixedly arranged on the other end of the third limiting rod, the third limiting rod is movably arranged through the moving material receiving seat second close to the first limiting baffle along the left-right direction, and the moving material receiving seat second close to the first limiting baffle is located between the moving material receiving seat adjacent to the first limiting baffle and the third limiting cap.

10. A variable pitch retraction device as claimed in any one of claims 1 to 7, wherein, The cross telescopic frame comprises a plurality of connecting rods, each two connecting rods constitute a cross connecting assembly, the middle portions of the two connecting rods of each cross connecting assembly are hingedly connected to each other to form a cross connecting portion, and the end portions of the connecting rods of adjacent two cross connecting assemblies are hingedly connected to each other.

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