Box filler with high error-tolerant rate for dairy product production line

Abstract

The utility model discloses a high-fault-tolerant-rate box filling machine for a dairy product production line. The high-fault-tolerant-rate box filling machine comprises a moving device, a lifting plate, a buffer connecting device, a movable plate, a gripper device and a sensing assembly. The movable end of the moving device is fixedly connected with the lifting plate; the lifting plate is connected with a movable plate through a buffer connecting device, a plurality of gripper devices are arranged at the bottom of the movable plate, and a sensing assembly is mounted at the top of the movable plate; the buffering connecting device comprises a connecting assembly and a buffering piece, the top of the connecting assembly is movably connected with the lifting plate, the bottom of the connecting assembly is fixedly connected with the movable plate, and the buffering piece is arranged on the outer side of the connecting assembly. According to the scheme, through mutual cooperation of the buffer connecting device and the sensing assembly, the error-tolerant rate of the box filling machine is increased, the situation that the gripper device collides with a workpiece is effectively reduced, and the problems that a traditional box filling machine can only be matched with the workpiece of one height, the error-tolerant rate is low, and the gripper device is extremely prone to colliding with the workpiece are solved.

Description

TECHNICAL FIELD

[0001] The utility model relates to a boxing machine technical field, concretely is a boxing machine with high fault tolerance for dairy product production line. BACKGROUND

[0002] In the complex and delicate production process of the dairy product production line, the boxing machine is the key link connecting production and packaging. The boxing machine is responsible for grabbing and placing the milk bottles after filling, sealing and other processes into the pre-prepared milk frame through precise mechanical operation, thereby completing the boxing and packaging process of the milk bottles.

[0003] However, the traditional boxing machine can only adapt to a specific height of milk bottles and milk frames, resulting in a low fault tolerance of the boxing machine. Once the production line needs to replace milk bottles of different specifications or sizes, or needs to adjust the height of the milk frame to adapt to changes in market demand, the boxing machine cannot complete the grabbing and placing tasks.

[0004] In addition, when the boxing machine deviates slightly during movement due to various reasons, the grabbing head device on it is prone to collision with milk bottles, milk frames or other workpieces. Such collision not only causes quality problems such as milk bottle breakage and milk leakage, but also damages the mechanical parts of the boxing machine, such as wear, deformation and even fracture, causing immeasurable economic losses to the enterprise. SUMMARY

[0005] To overcome the above-mentioned defects, the utility model provides a boxing machine with high fault tolerance for dairy product production line, which cooperates with the buffering connecting device and the sensing assembly. Not only does it improve the fault tolerance of the boxing machine, but also effectively reduces the collision between the grabbing head device and the workpiece, solving the problem that the traditional boxing machine can only adapt to workpieces of one height, has low fault tolerance and the grabbing head device is prone to collision with the workpiece.

[0006] To achieve this purpose, the utility model adopts the following technical solutions:

[0007] A boxing machine with high fault tolerance for dairy product production line, comprising a moving device, a lifting plate, a buffering connecting device, a movable plate, a grabbing head device and a sensing assembly.

[0008] The movable device is fixedly connected with the movable end of the lifting plate, and is used to drive the lifting plate to move in horizontal and vertical directions; the lifting plate is connected with the movable plate through the buffer connecting device, and is used to drive the buffer connecting device and the movable plate to move in horizontal and vertical directions; the bottom of the movable plate is provided with a plurality of grab head devices, which are used to grab and transfer the workpieces to be clamped; and the top of the movable plate is provided with an induction assembly, which is used to sense whether the distance between the movable plate and the lifting plate is within a normal range.

[0009] The buffer connecting device comprises a connecting assembly and a buffer piece, the top of the connecting assembly is movably connected with the lifting plate, the bottom of the connecting assembly is fixedly connected with the movable plate, and the connecting assembly is used to vertically connect the lifting plate and the movable plate; and the buffer piece is arranged outside the connecting assembly, and is used to raise or lower the movable plate and reduce the impact force of the movable plate.

[0010] The connecting assembly comprises a connecting rod and a limiting piece, the top of the connecting rod is movably arranged outside the top of the lifting plate, and the limiting piece is fixedly arranged on the connecting rod; the bottom wall of the limiting piece is movably abutted against the top of the lifting plate, and the bottom wall of the connecting rod is fixedly connected with the movable plate.

[0011] The buffer piece is arranged outside the connecting rod, the top of the buffer piece is fixedly connected with the bottom wall of the lifting plate, and the bottom of the buffer piece is fixedly connected with the top wall of the movable plate.

[0012] The buffer connecting device is provided with a plurality of groups, and the plurality of groups of the buffer connecting device are arranged in a matrix.

[0013] The induction assembly comprises a positioning piece, a mounting plate and an induction electric eye, the top of the mounting plate is vertically arranged on the bottom of the lifting plate, the bottom of the mounting plate is fixedly provided with the induction electric eye, the top of the movable plate is fixedly provided with the positioning piece, the induction electric eye is used to identify the positioning piece, and the induction electric eye is electrically connected with the movable device.

[0014] The distance between the induction electric eye and the lifting plate is the compression length of the buffer piece.

[0015] The grab head device comprises an outer shell, an inner shell and a rubber inflation assembly, the inner shell is fixedly arranged on the inner wall of the outer shell, the inner wall of the inner shell is a clamping space for the workpiece, and the space between the inner wall of the outer shell and the outer wall of the inner shell is a containing space for the rubber inflation assembly; the side wall of the inner shell is provided with a plurality of through holes, and the through holes connect the containing space and the clamping space.

[0016] The movable end of the rubber inflatable component extends into the clamping space, and the rubber inflatable component is used to fill the gap between the clamping space and the workpiece.

[0017] The rubber inflation assembly includes an inflator and a rubber airbag. The inflator is fixedly installed on the top of the housing. The inflation nozzle of the inflator is connected to the rubber airbag. The inflator is used to inflate or deflate the rubber airbag.

[0018] A telescopic rod is vertically installed at the bottom of the movable plate. The bottom of the telescopic rod is fixedly connected to the outer shell. A telescopic spring is movably sleeved on the outside of the telescopic rod. The two ends of the telescopic spring are respectively connected to the movable plate and the outer shell.

[0019] The inflator is installed inside the telescopic rod.

[0020] The technical solution of this utility model can include the following beneficial effects:

[0021] 1. By combining the buffer connection device and the sensing component, the fault tolerance of the case packing machine in this solution is not only improved, but also the collision between the gripper and the workpiece is effectively reduced. This solves the problem that traditional case packing machines can only adapt to workpieces of one height, have a low fault tolerance, and the gripper is very prone to colliding with the workpiece.

[0022] 2. The buffer ring is set on the outside of the connecting assembly. When the gripper at the bottom of the movable plate collides with the workpiece, the buffer can undergo elastic deformation at the moment of force, flexibly adjusting the distance between the lifting plate and the movable plate, absorbing and dispersing the impact force, and avoiding severe impact on the gripper and the workpiece, thereby effectively preventing damage to the gripper due to excessive impact force. Attached Figure Description

[0023] Figure 1 This is a schematic diagram of a case packing machine according to one embodiment of the present invention;

[0024] Figure 2 yes Figure 1 Enlarged view of point A in the middle;

[0025] Figure 3 This is a cross-sectional view of a gripper device according to one embodiment of this utility model;

[0026] Among them, 1. moving device; 2. lifting plate; 3. buffer connecting device; 31. connecting assembly; 32. buffer component; 33. connecting rod; 34. limiting component; 4. movable plate; 41. telescopic rod; 42. telescopic spring; 5. gripping head device; 51. outer shell; 52. inner shell; 53. rubber inflation assembly; 54. inflation machine; 55. rubber airbag; 6. sensing assembly; 61. positioning component; 62. mounting plate; 63. sensor. DETAILED DESCRIPTION

[0027] The technical solutions of the utility model are further illustrated below in combination with the drawings and specific embodiments.

[0028] In the description of the utility model, it needs to be understood that the directions or position relations indicated by the terms "length", "middle", "upper", "lower", "left", "right", "top", "bottom" and the like are based on the directions or position relations shown in the drawings, and are only for the convenience of describing the utility model and simplifying the description, and thus cannot be understood as limiting the utility model in that the indicated devices or elements must have a specific direction, be constructed and operated in a specific direction.

[0029] In addition, the terms "first" and "second" are only for the purpose of description, and cannot be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features.

[0030] In the description of the utility model, it needs to be understood that, unless otherwise specified and limited, the terms "mounting", "splicing", "connection" should be understood in a broad sense, for example, it can be fixed connection, or detachable connection, or integrally connected; it can be directly connected, or indirectly connected through an intermediate medium, or the communication between the two elements inside. 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.

[0031] The technical solutions of the utility model are further illustrated below in combination with the drawings and specific embodiments. Figures 1 to 3 A cartoning machine with high fault tolerance for dairy product production line is described below.

[0032] A cartoning machine with high fault tolerance for dairy product production line, comprising a moving device 1, a lifting plate 2, a buffer connecting device 3, a movable plate 4, a grab head device 5 and a sensing assembly 6.

[0033] The movable end of the moving device 1 is fixedly connected with the lifting plate 2, and the moving device 1 is used to drive the lifting plate 2 to move horizontally and vertically; the lifting plate 2 is connected with the movable plate 4 through the buffer connecting device 3, and the lifting plate 2 is used to drive the buffer connecting device 3 and the movable plate 4 to move horizontally and vertically, the bottom of the movable plate 4 is provided with a plurality of grab head devices 5, the grab head devices 5 are used to grab and transfer the workpieces to be clamped, and the top of the movable plate 4 is provided with a sensing assembly 6, which is used to sense whether the distance between the movable plate 4 and the lifting plate 2 is within a normal range.

[0034] The buffer connecting device 3 comprises a connecting assembly 31 and a buffer 32, the top of the connecting assembly 31 is movably connected with the lifting plate 2, the bottom of the connecting assembly 31 is fixedly connected with the movable plate 4, the connecting assembly 31 is used for vertically connecting the lifting plate 2 and the movable plate 4, and the buffer 32 is arranged outside the connecting assembly 31 and is used for lifting or lowering the movable plate 4 and reducing the impact force of the movable plate 4.

[0035] Firstly, the mobile device 1 is fixedly connected with the lifting plate 2, so that the mobile device 1 can drive the lifting plate 2 to move flexibly in the horizontal direction and the vertical direction. The buffer connecting device 3 connects the lifting plate 2 and the movable plate 4, so that the lifting plate 2 can drive the connecting assembly 31 and the movable plate 4 to move together. The plurality of grab head devices 5 at the bottom of the movable plate 4 can accurately grab and transfer the workpiece to be clamped, so as to complete the grabbing and boxing process of the workpiece.

[0036] The connecting assembly 31 in the buffer connecting device 3 can vertically connect the lifting plate 2 and the movable plate 4, so as to ensure that the movable plate 4 can move in the horizontal direction and the vertical direction, so that the grab head device 5 can accurately grab the workpiece. The top of the connecting assembly 31 is movably connected with the lifting plate 2, so that the distance between the lifting plate 2 and the movable plate 4 can be flexibly adjusted within a certain range according to actual needs, thereby effectively avoiding the situation that the grab head device 5 collides with the workpiece due to improper distance between the lifting plate 2 and the movable plate 4.

[0037] It is worth noting that the buffer 32 is preferably a spring. The buffer 32 is arranged outside the connecting assembly 31 in a ring shape. When the grab head device 5 at the bottom of the movable plate 4 collides with the workpiece, the buffer 32 can elastically deform in an instant force, flexibly adjust the distance between the lifting plate 2 and the movable plate 4, absorb and disperse the impact force, avoid the grab head device 5 and the workpiece from being subjected to severe impact, and effectively prevent the grab head device 5 from being damaged due to excessive impact force.

[0038] In addition, the sensing assembly 6 mounted at the top of the movable plate 4 can sense whether the distance between the movable plate 4 and the lifting plate 2 is within a normal range in real time, so that the operator can timely know the running state of the boxing machine, and avoid other safety problems caused by the movable plate 4 being in an abnormal state.

[0039] Therefore, the buffer connecting device 3 and the sensing assembly 6 cooperate with each other, which not only improves the fault tolerance of the boxing machine, but also effectively reduces the situation that the grab head device 5 collides with the workpiece, and solves the problems that the traditional boxing machine can only adapt to workpieces of one height, the fault tolerance is low, and the grab head device 5 is prone to collide with the workpiece.

[0040] The connecting assembly 31 comprises a connecting rod 33 and a limiting piece 34, the top of the connecting rod 33 is movably arranged out of the top of the lifting plate 2, and the limiting piece 34 is fixedly arranged on the connecting rod 33, the bottom wall of the limiting piece 34 movably abuts against the top of the lifting plate 2, and the bottom wall of the connecting rod 33 is fixedly connected with the movable plate 4.

[0041] The buffer 32 is annularly arranged outside the connecting rod 33, the top of the buffer 32 is fixedly connected with the bottom wall of the lifting plate 2, and the bottom of the buffer 32 is fixedly connected with the top wall of the movable plate 4.

[0042] The connecting rod 33 vertically connects the lifting plate 2 and the movable plate 4, so that the movable plate 4 is always located directly below the lifting plate 2. During the grabbing process, the lifting plate 2 moves in the horizontal and vertical directions under the driving of the moving device 1, the connecting rod 33 always vertically drives the movable plate 4 to move synchronously, avoiding the movable plate 4 from deviating or shaking during the moving process, thereby ensuring the position accuracy of the grabbing device 5 when grabbing the workpiece to be clamped, and reducing the grabbing failure and collision risk caused by the position deviation.

[0043] The top of the connecting rod 33 is fixedly provided with the limiting piece 34, and the bottom wall of the limiting piece 34 movably abuts against the top of the lifting plate 2, so that the limiting piece 34 can limit the maximum distance between the lifting plate 2 and the movable plate 4. Moreover, the top of the connecting rod 33 movably penetrates out of the lifting plate 2, so that the movable plate 4 moves up and down relative to the lifting plate 2. Therefore, the movable plate 4 can move up and down relative to the lifting plate 2 within a certain range, so as to flexibly adjust the distance between the movable plate 4 and the lifting plate 2, improve the fault tolerance of the packing machine, and avoid the collision between the grabbing device 5 and the workpiece, thereby avoiding the failure of the grabbing device 5.

[0044] In addition, the buffer 32 is annularly arranged outside the connecting rod 33. When the impact occurs, the buffer 32 absorbs energy through the elastic deformation of itself, and drives the movable plate 4 to move upward relative to the lifting plate 2, thereby reducing the impact force suffered by the movable plate 4 and the grabbing device 5, and further protecting the movable plate 4 and the grabbing device 5.

[0045] The buffer connecting device 3 is provided in multiple groups, and the multiple groups of buffer connecting devices 3 are arranged in a matrix.

[0046] The multiple groups of buffer connecting devices 3 are arranged in a matrix, which can provide more uniform and stable support for the movable plate 4, so that the movable plate 4 remains balanced during the movement, avoids tilting or shaking due to uneven local force, and further improves the stability of grabbing and transferring the workpiece.

[0047] Secondly, when part of the buffer connecting devices 3 fails or is damaged, the other devices can still function to ensure the normal operation of the movable plate 4.

[0048] The sensing assembly 6 comprises a positioning piece 61, a mounting plate 62 and a sensing electric eye 63, the top of the mounting plate 62 is vertically mounted on the bottom of the lifting plate 2, the bottom of the mounting plate 62 is fixedly provided with the sensing electric eye 63, the top of the movable plate 4 is fixedly provided with the positioning piece 61, the sensing electric eye 63 is used for identifying the positioning piece 61, and the sensing electric eye 63 is electrically connected with the mobile device 1.

[0049] The spacing between the sensing electric eye 63 and the lifting plate 2 is the compression length of the buffer 32.

[0050] When the grabbing head device 5 collides with the workpiece, the buffer 32 of the buffer connecting device 3 is compressed under force, so that the movable plate 4 moves upward relative to the lifting plate 2, thereby shortening the spacing between the movable plate 4 and the lifting plate 2. Since the top of the movable plate 4 is provided with the positioning piece 61, the positioning piece 61 moves upward together with the movable plate 4. When the positioning piece 61 moves upward to the identification range of the sensing electric eye 63, the sensing electric eye 63 can identify the positioning piece 61 and feed back the positioning piece 61 activity height information to the mobile device 1 in real time. At this time, the mobile device 1 can adjust the moving state of the lifting plate 2 in time according to the signal of the sensing electric eye 63.

[0051] It is worth noting that the spacing between the sensing electric eye 63 and the lifting plate 2 is the compression length of the buffer 32. When the sensing electric eye 63 identifies the positioning piece 61, it indicates that the compression degree of the buffer 32 is in a critical state. The sensing electric eye 63 timely transmits an abnormal signal to the mobile device 1, and the mobile device 1 responds immediately to stop the grabbing and transferring movement of the workpiece, thereby avoiding the situation that the buffer 32 is excessively compressed and the buffer connecting device 3 fails.

[0052] The grabbing head device 5 comprises an outer shell 51, an inner shell 52 and a rubber inflatable assembly 53, the inner shell 52 is fixedly mounted on the inner wall of the outer shell 51, the inner wall of the inner shell 52 is a clamping space for the workpiece, the space between the inner wall of the outer shell 51 and the outer wall of the inner shell 52 is a containing space for the rubber inflatable assembly 53, and the side wall of the inner shell 52 is provided with a plurality of through holes connecting the containing space and the clamping space.

[0053] The movable end of the rubber inflatable assembly 53 movably extends into the clamping space, and the rubber inflatable assembly 53 is used for filling the gap between the clamping space and the workpiece.

[0054] When the outer shell 51 is accidentally impacted by external force, the impact force is transmitted on the outer shell 51, the rubber inflatable assembly 53 and the inner shell 52 in sequence, and finally acts on the workpiece. The outer shell 51, the rubber inflatable assembly 53 and the inner shell 52 effectively reduce the impact force borne by the workpiece, and reduce the occurrence of damage to the workpiece.

[0055] Moreover, the rubber inflatable assembly 53 is movable into the clamping space through the plurality of through holes and fills the gap between the clamping space and the workpiece, so that the workpiece is tightly attached to the gripper device 5, preventing the workpiece from slipping or falling during the gripping process.

[0056] In addition, the rubber inflatable assembly 53 can form a buffer layer, and when the gripper is impacted during the transfer process, the rubber inflatable assembly 53 can deform to absorb and disperse most of the impact force, reducing damage to the workpiece.

[0057] The rubber inflatable assembly 53 includes an inflator 54 and a rubber airbag 55, the inflator 54 is fixedly installed on the top of the outer shell 51, the inflator 54 is in communication with the rubber airbag 55, and the inflator 54 is used for inflating or deflating the rubber airbag 55.

[0058] When the workpiece is located in the clamping space, the inflator 54 inflates the rubber airbag 55, so that the rubber airbag 55 inflates and expands, passes through the through hole, and fills the gap between the clamping space and the workpiece, so that the rubber airbag 55 is tightly attached to the surface of the workpiece, increases the friction between the rubber airbag 55 and the workpiece, effectively prevents the workpiece from slipping during the gripping and transferring process, not only improves the gripping stability of the gripper device 5, but also avoids damage to the material due to shaking during the transferring process.

[0059] When the workpiece needs to be released, the inflator 54 deflates the rubber airbag 55, so that the volume of the rubber airbag 55 gradually decreases, the airbag wall that is tightly attached to the surface of the workpiece gradually loosens, and the clamping force of the rubber airbag 55 on the workpiece gradually decreases until it disappears.

[0060] The rubber airbag 55 has good deformation ability and can tightly attach and clamp workpieces of various shapes and sizes, thereby improving the application range of the boxing machine.

[0061] The bottom of the movable plate 4 is vertically installed with a telescopic rod 41, the bottom of the telescopic rod 41 is fixedly connected with the outer shell 51, and the outer side of the telescopic rod 41 is movably sleeved with a telescopic spring 42, and the two ends of the telescopic spring 42 are respectively connected with the movable plate 4 and the outer shell 51.

[0062] The inflator 54 is installed in the telescopic rod 41.

[0063] During the movement of the movable plate 4, the telescopic rod 41 ensures the stable connection between the outer shell 51 and the movable plate 4. The telescopic spring 42 is sleeved on the outer side of the telescopic rod 41, which further enhances the stability of the connection and prevents the gripper device 5 from being unstable due to shaking or vibration.

[0064] When the head grabbing device 5 grabs the material or collides, the telescopic spring 42 is compressed to absorb energy, drives the telescopic rod 41 to contract, thereby reducing the impact force received by the movable plate 4, and avoiding damage due to excessive impact force.

[0065] In addition, the inflator 54 is installed in the telescopic rod 41, avoiding direct contact with external objects, even if a collision or impact occurs, the telescopic rod 41 can play a buffering role, greatly reducing the possibility of damage to the inflator 54.

[0066] The technical principles of the present application are described above in combination with specific embodiments. These descriptions are only to explain the principles of the present application, and cannot be interpreted in any way as a limitation on the scope of protection of the present application. Based on the explanation here, those skilled in the art can think of other specific embodiments of the present application without creative labor, and these ways will fall within the scope of protection of the present application.

Claims

1. A high-tolerance box packing machine for dairy product production lines, characterized in that, Includes a moving device, a lifting platform, a buffer connection device, a movable platform, a gripping head device, and a sensing component; The movable end of the moving device is fixedly connected to the lifting plate, and the moving device is used to drive the lifting plate to move horizontally and vertically; the lifting plate is connected to the movable plate through the buffer connecting device, and the lifting plate is used to drive the buffer connecting device and the movable plate to move horizontally and vertically; the bottom of the movable plate is provided with multiple gripping heads, which are used to grip and transfer the workpiece to be clamped; the top of the movable plate is equipped with a sensing component, which is used to sense whether the distance between the movable plate and the lifting plate is within the normal range. The buffer connection device includes a connecting component and a buffer member. The top of the connecting component is movably connected to the lifting plate, and the bottom of the connecting component is fixedly connected to the movable plate. The connecting component is used to vertically connect the lifting plate and the movable plate. The buffer member is disposed on the outside of the connecting component and is used to raise or lower the movable plate and reduce the impact force of the movable plate.

2. The high-tolerance packing machine for dairy production lines according to claim 1, characterized in that, The connecting assembly includes a connecting rod and a limiting member. The top of the connecting rod extends movably through the top of the lifting plate and is fixedly installed with the limiting member. The bottom wall of the limiting member movably abuts against the top of the lifting plate, and the bottom wall of the connecting rod is fixedly connected to the movable plate. The buffer is arranged around the outside of the connecting rod, the top of the buffer is fixedly connected to the bottom wall of the lifting plate, and the bottom of the buffer is fixedly connected to the top wall of the movable plate.

3. A high-tolerance packing machine for dairy production lines according to claim 1, characterized in that, The buffer connection device is provided in multiple sets, and the multiple sets of buffer connection devices are arranged in a matrix.

4. A high-tolerance case packing machine for dairy production lines according to claim 2, characterized in that, The sensing component includes a positioning element, a mounting plate, and a photoelectric sensor. The top of the mounting plate is vertically mounted on the bottom of the lifting plate, and the photoelectric sensor is fixedly mounted on the bottom of the mounting plate. The positioning element is fixedly mounted on the top of the movable plate. The photoelectric sensor is used to identify the positioning element and is electrically connected to the moving device. The distance between the sensor and the lifting plate is the compression length of the buffer component.

5. A high-tolerance case packing machine for dairy production lines according to claim 1, characterized in that, The gripper device includes an outer shell, an inner shell, and a rubber inflation assembly. The inner shell is fixedly installed on the inner wall of the outer shell. The inner wall of the inner shell is the clamping space for the workpiece. The space between the inner wall of the outer shell and the outer wall of the inner shell is the accommodating space for the rubber inflation assembly. The side wall of the inner shell is provided with multiple through holes, which connect the accommodating space and the clamping space. The movable end of the rubber inflatable component extends into the clamping space, and the rubber inflatable component is used to fill the gap between the clamping space and the workpiece.

6. A high-tolerance case packing machine for dairy production lines according to claim 5, characterized in that, The rubber inflation assembly includes an inflator and a rubber airbag. The inflator is fixedly installed on the top of the housing. The inflation nozzle of the inflator is connected to the rubber airbag. The inflator is used to inflate or deflate the rubber airbag.

7. A high-tolerance packing machine for dairy production lines according to claim 6, characterized in that, A telescopic rod is vertically installed at the bottom of the movable plate. The bottom of the telescopic rod is fixedly connected to the outer shell. A telescopic spring is movably sleeved on the outside of the telescopic rod. The two ends of the telescopic spring are respectively connected to the movable plate and the outer shell. The inflator is installed inside the telescopic rod.

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