Injection molding machine and molding machine intermediate station transmission mechanism

Abstract

An injection molding machine and a molding machine intermediate station transmission mechanism, including a manipulator system and a multi-level displacement transition mechanism, the manipulator system is located above the template of the injection molding machine and the blank connection device of the multi-level displacement transition mechanism, in the manipulator system, the fingers are installed on the manipulator palm, the manipulator palm is fixed on the manipulator palm fixing seat, the manipulator palm fixing seat is rotatably connected to the up and down movement fixing seat through a rotating shaft, the rotating shaft is connected to a swing driving component for driving the rotating shaft to rotate; the up and down movement fixing seat is connected to a three-axis motion mechanism for realizing up and down, front and back, left and right horizontal movement on a track; the multi-level displacement transition mechanism includes a blank connection device, a circular track and a flip displacement mechanism. The present invention has mechanized operation, high efficiency, low cost, and good product quality stability.

Description

Technical Field

[0001] The invention belongs to the field of hollow molding equipment and relates to an intermediate station transmission mechanism between an injection molding machine and a hollow molding machine. Background Art

[0002] Hollow molding machines (also known as bottle blowing machines) and injection molding machines produce their own products separately, and their interaction needs to be completed through manual packaging, transportation, and warehousing. In these links, product scratches and deformations are inevitable, which ultimately causes a significant increase in the machine failure rate and product defective rate. In addition, the connection of each work link in the middle is both time-consuming and costly. Summary of the invention

[0003] In order to overcome the shortcomings of low efficiency, high cost and poor product quality stability of manual operation between existing injection molding machines and hollow molding machines, the present invention provides an injection molding machine and molding machine intermediate station transmission mechanism with mechanized operation, high efficiency, low cost and good product quality stability.

[0004] The technical solution adopted by the present invention to solve its technical problem is:

[0005] An injection molding machine and a molding machine intermediate station transmission mechanism, comprising a manipulator system and a multi-level displacement transition mechanism, wherein the manipulator system is located above a template of the injection molding machine and a blank receiving device of the multi-level displacement transition mechanism, wherein the manipulator system comprises left and right horizontal guide rails, up and down travel guide rails, up and down travel fixed seats, a manipulator palm fixed seat, a manipulator palm and fingers, wherein the fingers are mounted on the manipulator palm, the manipulator palm is fixed on the manipulator palm fixed seat, the manipulator palm fixed seat is rotatably connected to the up and down travel fixed seat via a rotating shaft, the rotating shaft is connected to a swing driving assembly for driving the rotating shaft to rotate, and the up and down travel fixed seat is connected to a three-axis motion mechanism for realizing up and down, front and back, left and right horizontal travel on a track;

[0006] The multi-level displacement transition mechanism includes a blank connection device, an annular track and a flipping and shifting mechanism. The annular track is provided with equally spaced blank seats for positively placing bottle blanks. The blank connection device is located above one side of the annular track. The outer side of the other side of the annular track is provided with a flipping and shifting mechanism for flipping and inverting the bottle blanks on the bottle blank seat of the blow molding machine. The flipping and shifting mechanism includes a flipping platform, a displacement sleeve and a manipulator. The flipping platform is connected to a lifting assembly for raising or lowering the platform height. The displacement sleeve is fixed to the fixed seats on both sides of the flipping platform. The rotating rod position On the inner side of the displacement sleeve, the two ends of the rotating rod are placed in the bearings of the fixed seat, the fixed rod at the tail of the manipulator passes through the track notch on the surface of the displacement sleeve and is connected to the rotating rod, the manipulator has a stroke along the axial movement of the rotating rod, the surface of the displacement sleeve is provided with a track for the manipulator to pass through and realize displacement, the distance between one extreme position of adjacent tracks is the distance between adjacent hole blank seats of the circular track, and the distance between another extreme position of adjacent tracks is the interval between adjacent bottle blanks processed by the hollow molding machine; the rotating rod is connected to a rotating component for driving the rotating rod to rotate.

[0007] Furthermore, the lifting assembly includes a lifting cylinder, and an action end of the lifting cylinder is connected to the bottom of the flip platform.

[0008] Furthermore, the rotating assembly includes a rotating cylinder, a rack and a gear. The rotating cylinder is installed on the flip platform. The action end of the rotating cylinder is linked to the rack. The rack is meshed with the gear. The gear is rolled on the rotating rod.

[0009] Furthermore, the robot comprises an air gripper, fingers and a fixed rod, the fingers are mounted on the air gripper, and the air gripper is fixed on the fixed rod.

[0010] An additional track is provided above the annular track in front of the running direction of the turning mechanism, and a channel for hanging the tube blank is provided in the middle of the additional track. The height of the channel is lower than the retaining ring of the tube blank placed forwardly in the hole blank seat.

[0011] Preferably, the blank connecting device is arranged in sequence with channels for the tube blanks to slide down, the distances between the upper ends and the lower ends of any two adjacent channels are equal, the distance between the upper ends of any two adjacent channels is the distance between adjacent bottle blanks processed by the injection molding machine, and the distance between the lower ends of any two adjacent channels is the distance between adjacent hole blank seats of the circular track.

[0012] Furthermore, a valve plate is provided at the lower end of the channel, and the valve plate is connected to a material dropping cylinder for controlling the valve plate to block the lower end of the channel or to move away from the lower end of the channel.

[0013] Furthermore, a positioning strip is provided on the side of the annular track below the channel, and the positioning strip is connected to the outer wall of the hole blank seat on the annular track for positioning the sliding tube blank, and the positioning strip is connected to a positioning cylinder for driving the positioning strip close to or away from the hole blank seat.

[0014] The blank joining device is of a colander-type structure.

[0015] Preferably, the upper end of the channel is larger than the lower end and has a conical cross-section.

[0016] The three-axis motion mechanism includes a front-to-back moving guide rail, an up-and-down moving guide rail, and a left-and-right horizontal guide rail. The up-and-down moving fixed seat can be slidably mounted on the up-and-down moving guide rail, and the up-and-down moving fixed seat is connected to an up-and-down moving driving assembly used to drive the up-and-down moving fixed seat to slide up and down. The up-and-down moving guide rail can be slidably mounted on the front-and-back moving guide rail, and the up-and-down moving guide rail is connected to a front-and-back moving driving assembly used to drive the up-and-down moving guide rail to move forward and backward; the front-and-back moving guide rail can be slidably mounted on the left-and-right horizontal guide rail, and the front-and-back moving guide rail is connected to a left-and-right horizontal moving driving assembly used to drive the front-and-back moving guide rail to move horizontally left-and-right. Of course, the three-axis motion mechanism can also be implemented in other ways, as long as the functions of up-and-down, front-and-back, and left-and-right horizontal movement can be realized.

[0017] The swing drive assembly includes a reducer and a servo motor, the rotating shaft is connected to the output shaft of the reducer, and the input shaft of the reducer is connected to the output shaft of the servo motor.

[0018] The up and down movement drive assembly, the front and rear movement drive assembly, the left and right horizontal movement drive assembly and the cylinder. Of course, other drive modes are also possible.

[0019] The technical concept of the present invention is as follows: a multi-level displacement transition mechanism is located between the blow molding machine and the injection molding machine, a robot system takes the blank, the tube blank is placed in the multi-level displacement transition mechanism for transition, and then the grabbing and flipping displacement mechanism inserts the tube blank into the running track aluminum seat in the blow molding machine, allowing the tube blank to enter the next link of the blow molding machine. These actions replace the manual link, pairing the tube blank production cycle of the injection molding machine (for example, one out of twelve cavities) with the bottle blowing production cycle of the blow molding machine (for example, one out of four), realizing fully automatic intelligent production, and allowing the injection molding machine and the blow molding machine to coordinate production at zero distance.

[0020] The billet receiving device is a colander-type structure. The billet enters from the upper opening and slides down to the lower exit under its own weight to achieve displacement.

[0021] The beneficial effects of the present invention are mainly manifested in: mechanized operation, high efficiency, low cost and good product quality stability. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] Figure 1 This is a schematic diagram of the transfer mechanism between the injection molding machine and the molding machine intermediate station.

[0023] Figure 2 It is a schematic diagram of an injection molding machine and a robot system, (a) is a front view, and (b) is a side view; wherein 21 is an up and down guide rail, 22 is a left and right horizontal guide rail, 23 is an injection molding machine, and 24 is a molding machine (blow molding machine).

[0024] Figure 3 It is a schematic diagram of the clamping part of the manipulator system, wherein 21 is the up and down moving guide rail, 25 is the up and down moving front end fixed seat, 26 is the manipulator palm fixed seat, 27 is the manipulator palm, 281 is finger 1, 282 is finger 2, 29 is the reducer, and 30 is the servo motor.

[0025] Figure 4 yes Figure 3 , wherein 291 is cylinder 1 and 292 is cylinder 2.

[0026] Figure 5 yes Figure 3 Schematic diagram of a 90° swing.

[0027] Figure 6 The following is a schematic diagram of the robot's movements. (a) is gripping the tube blank, (b) is lifting it out of the injection molding machine, (c) is the robot rotating (making the tube blank bottle mouth face upward), (d) is the robot moving horizontally out of the injection molding machine; (e) is the robot moving down and placing the bottle blank for the first time (six tube blanks on one side at a time), and (f) is the second placement of the bottle blank (six tube blanks on the other side).

[0028] Figure 7 It is a schematic diagram of a multi-level displacement transition mechanism.

[0029] Figure 8 It is a top view of the multi-level displacement transition mechanism.

[0030] Fig. 9 It is a schematic diagram of the initial state of the flip-shift mechanism.

[0031] Fig.10 Schematic diagram of the second state of the flip position mechanism.

[0032] Fig.11 It is a top view of the flip-shift structure.

[0033] Fig.12 It is a side view of the flip-shift mechanism.

[0034] Fig.13 It is a schematic diagram of the robot.

[0035] Fig.14 It is a schematic diagram of the displacement sleeve. DETAILED DESCRIPTION

[0036] The present invention will be further described below in conjunction with the accompanying drawings.

[0037] Reference Figure 1 to Figure 14 , an injection molding machine and a molding machine intermediate station transmission mechanism, including a manipulator system and a multi-level displacement transition mechanism, the manipulator system is located above the template of the injection molding machine and the blank connecting device of the multi-level displacement transition mechanism, the manipulator system includes left and right horizontal guide rails, up and down travel guide rails, up and down travel fixed seats, manipulator palm fixed seats, manipulator palms and fingers, the fingers are installed on the manipulator palms, the manipulator palms are fixed on the manipulator palm fixed seats, the manipulator palm fixed seats are rotatably connected to the up and down travel fixed seats through a rotating shaft, the rotating shaft is connected to a swing driving assembly for driving the rotating shaft to rotate, and the up and down travel fixed seats are connected to a three-axis motion mechanism for realizing up and down, front and back, left and right horizontal movement on the track;

[0038] The multi-level displacement transition mechanism includes a blank connection device, an annular track and a flipping and shifting mechanism. The annular track is provided with equally spaced blank seats for positively placing bottle blanks. The blank connection device is located above one side of the annular track. The outer side of the other side of the annular track is provided with a flipping and shifting mechanism for flipping and inverting the bottle blanks on the bottle blank seat of the blow molding machine. The flipping and shifting mechanism includes a flipping platform, a displacement sleeve and a manipulator. The flipping platform is connected to a lifting assembly for raising or lowering the platform height. The displacement sleeve is fixed to the fixed seats on both sides of the flipping platform. The rotating rod position On the inner side of the displacement sleeve, the two ends of the rotating rod are placed in the bearings of the fixed seat, the fixed rod at the tail of the manipulator passes through the track notch on the surface of the displacement sleeve and is connected to the rotating rod, the manipulator has a stroke along the axial movement of the rotating rod, the surface of the displacement sleeve is provided with a track for the manipulator to pass through and realize displacement, the distance between one extreme position of adjacent tracks is the distance between adjacent hole blank seats of the circular track, and the distance between another extreme position of adjacent tracks is the interval between adjacent bottle blanks processed by the hollow molding machine; the rotating rod is connected to a rotating component for driving the rotating rod to rotate.

[0039] Furthermore, the lifting assembly includes a lifting cylinder, and an action end of the lifting cylinder is connected to the bottom of the flip platform.

[0040] Furthermore, the rotating assembly includes a rotating cylinder, a rack and a gear. The rotating cylinder is installed on the flip platform. The action end of the rotating cylinder is linked to the rack. The rack is meshed with the gear. The gear is rolled on the rotating rod.

[0041] Furthermore, the robot comprises an air gripper, fingers and a fixed rod, the fingers are mounted on the air gripper, and the air gripper is fixed on the fixed rod.

[0042] An additional track is provided above the annular track in front of the running direction of the turning mechanism, and a channel for hanging the tube blank is provided in the middle of the additional track. The height of the channel is lower than the retaining ring of the tube blank placed forwardly in the hole blank seat.

[0043] Preferably, the blank connecting device is arranged in sequence with channels for the tube blanks to slide down, the distances between the upper ends and the lower ends of any two adjacent channels are equal, the distance between the upper ends of any two adjacent channels is the distance between adjacent bottle blanks processed by the injection molding machine, and the distance between the lower ends of any two adjacent channels is the distance between adjacent hole blank seats of the circular track.

[0044] Furthermore, a valve plate is provided at the lower end of the channel, and the valve plate is connected to a material dropping cylinder for controlling the valve plate to block the lower end of the channel or to move away from the lower end of the channel.

[0045] Furthermore, a positioning strip is provided on the side of the annular track below the channel, and the positioning strip is connected to the outer wall of the hole blank seat on the annular track for positioning the sliding tube blank, and the positioning strip is connected to a positioning cylinder for driving the positioning strip close to or away from the hole blank seat.

[0046] The blank joining device is of a colander-type structure.

[0047] Preferably, the upper end of the channel is larger than the lower end and has a conical cross-section.

[0048] The three-axis motion mechanism includes a front-to-back moving guide rail, an up-and-down moving guide rail, and a left-and-right horizontal guide rail. The up-and-down moving fixed seat can be slidably mounted on the up-and-down moving guide rail, and the up-and-down moving fixed seat is connected to an up-and-down moving driving assembly used to drive the up-and-down moving fixed seat to slide up and down. The up-and-down moving guide rail can be slidably mounted on the front-and-back moving guide rail, and the up-and-down moving guide rail is connected to a front-and-back moving driving assembly used to drive the up-and-down moving guide rail to move forward and backward; the front-and-back moving guide rail can be slidably mounted on the left-and-right horizontal guide rail, and the front-and-back moving guide rail is connected to a left-and-right horizontal moving driving assembly used to drive the front-and-back moving guide rail to move horizontally left-and-right. Of course, the three-axis motion mechanism can also be implemented in other ways, as long as the functions of up-and-down, front-and-back, and left-and-right horizontal movement can be realized.

[0049] The swing drive assembly includes a reducer and a servo motor, the rotating shaft is connected to the output shaft of the reducer, and the input shaft of the reducer is connected to the output shaft of the servo motor.

[0050] The up and down movement drive assembly, the front and rear movement drive assembly, the left and right horizontal movement drive assembly and the cylinder. Of course, other drive modes are also possible.

[0051] In this embodiment, the injection molding machine mold is a double-row structure with twelve cavities. The fingers on the palm of the manipulator are controlled individually in a single row according to the actual design requirements. See the relationship diagram between the injection molding machine and the manipulator system. The manipulator system is located above the injection molding machine template and can move horizontally on the track, front and back, up and down, left and right. The manipulator palm is located at the front end of the manipulator's up and down movement guide rail. A reducer and a servo motor are installed on the front fixed seat. The manipulator palm fixed seat is connected to the reducer shaft head, and the servo motor controls the flipping action of the entire manipulator palm. The fingers 1 and 2 on the manipulator palm are individually controlled to open and close by cylinders 1 and 2 through connecting rods.

[0052] Reference Figure 6 The palm of the robot is vertically inserted into the mold of the injection molding machine. Cylinders 1 and 2 control fingers 1 and 2 to clamp the tube blanks. The palm of the robot is lifted out of the injection molding machine. The servo motor controls the palm of the robot to rotate 90º. The bottle mouth of the tube blank faces upward. The palm of the robot moves horizontally out of the injection molding machine. The palm of the robot moves down and reaches the first blank placing and connecting device. Cylinder 1 controls finger 1 to open and release a row of tube blanks (six tube blanks). The palm of the robot continues to move to the second blank placing and connecting device. Cylinder 2 controls finger 2 to open and release another row of tube blanks (another six tube blanks).

[0053] The bottle blowing machine can produce four billets at a time, while the injection molding machine can produce twelve billets in one cycle, so the relationship between the two is three times, with three cycles of the bottle blowing machine being paired with one cycle of the injection molding machine.

[0054] The robot palm places the twelve tube blanks in the blank connection device (P3≠P2). The blank connection device is a colander-type structure. The tube blanks enter from the upper opening and slide down to the lower exit with their own weight. At this time, it is in the blow molding cycle of the hollow molding machine. The positioning cylinder 3 moves the positioning bar 4 to position the twelve hole blank seats 5. The blanking cylinder 1 opens the valve plate 2, and the twelve tube blanks fall into the hole blank seats 5 (there are no other tube blanks facing the twelve hole blank seats 5 before). The positioning cylinder 3 retreats, the positioning bar 4 is separated from the hole blank seat 5, and the blanking cylinder 1 returns to its position, so that the valve plate 2 seals the outlet of the blank connection device, and the first variable pitch docking is completed.

[0055] In each cycle of the hollow molding machine, the aluminum seat 8 on the hollow molding machine track moves 4 P1 positions. The driven wheel 9 drives the sprockets 10 and 6 to move synchronously, and the hole blank seat 5 on the circular track moves 4 P2 positions.

[0056] The displacement sleeve 14 is fixed on the fixed seats 20 on both sides of the flip platform 19, the rotating rod 13 passes through the inner side of the displacement sleeve 14 and is placed in the bearings of the fixed seats 20 on both sides, and the fixed rod 12 of the air claw 7 passes through the displacement sleeve 14 (see Figure 8) is connected in series with the rotating rod 13, and the fixed rod 12 can slide on the rotating rod 13 along the track of the displacement sleeve 14. A gear 17 is installed at the end of the rotating rod 13, which is engaged with the rack 16 on the fixed seat 20, and the rack 16 is controlled by the rotating cylinder 15.

[0057] The air gripper 7 controls the fingers 11 to grab four tube blanks from the hole blank seat 5 on the circular track. The lifting cylinder 18 raises the flipping platform 19 to separate the tube blank from the hole blank seat 5. The rotating cylinder 15 pulls the rack 16 to shift, and the air gripper 7 rotates with the rotating rod 13. Through the trajectory of the displacement sleeve 14, the spacing between the air grippers 7 changes from P2 to P1. Under the cylinder 18, the tube blank is sent to the aluminum seat 8 on the track of the blow molding machine, realizing the second variable pitch docking (P2≠P1). In this way, the hollow molding machine runs three cycles (during these three cycles, the injection molding machine produces tube blanks, and the robot grabs the tube blanks produced by the injection molding machine and puts them into the blank connecting device), and the twelve tube blanks on the circular track are taken up and put onto the aluminum seat 8 of the hollow molding machine track. The hole blank seats 5 facing the blank connecting device are all empty. In the next blow molding action cycle of the hollow molding machine, the cyclic positioning cylinder 3 and the blanking cylinder 1 can be operated to put the 12 tube blanks in the static blank connecting device into the hole blank seats 5.

[0058] The additional track is used to force the tube blanks not taken away by the air claws 7 to be separated from the hole blank seat 5, vacating the tube blanks in the hole blank seat 5, and preparing for placing the tube blanks in the next cycle.

Claims

1. A transfer mechanism for an injection molding machine and an intermediate station of a molding machine, characterized in that: The invention comprises a manipulator system and a multi-level shifting transition mechanism, wherein the manipulator system is located above the template of the injection molding machine and the blank connecting device of the multi-level shifting transition mechanism, the manipulator system comprises an up and down movement fixing seat, a manipulator palm fixing seat, a manipulator palm and fingers, the fingers are mounted on the manipulator palm, the manipulator palm is fixed on the manipulator palm fixing seat, the manipulator palm fixing seat is rotatably connected to the up and down movement fixing seat via a rotating shaft, the rotating shaft is connected to a swing driving assembly for driving the rotating shaft to rotate, and the up and down movement fixing seat is connected to a three-axis motion mechanism for horizontal movement on a track, front and back, up and down, and left and right; The multi-level shifting transition mechanism includes a blank connecting device, an annular track and a flipping and shifting mechanism. The annular track is provided with equally spaced blank seats for placing bottle blanks in the forward direction. The blank connecting device is located above one side of the annular track. The outer side of the other side of the annular track is provided with a flipping and shifting mechanism for flipping and placing the bottle blanks upside down on the bottle blank seat of the hollow molding machine. The flipping and shifting mechanism includes a flipping platform, a shifting sleeve and a manipulator. The flipping platform is connected to a lifting component for raising or lowering the platform height. The shifting sleeve is fixed to the fixed seats on both sides of the flipping platform. The rotating rod is located at On the inner side of the displacement sleeve, both ends of the rotating rod are placed in the bearings of the fixed seat, and the fixed rod at the tail of the manipulator system is connected to the rotating rod through the track notch on the surface of the displacement sleeve. The manipulator has a stroke moving along the axial direction of the rotating rod, and the surface of the displacement sleeve is provided with a track for the manipulator to pass through and realize displacement. The distance between one extreme position of adjacent tracks is the distance between adjacent hole blank seats of the annular track, and the distance between the other extreme positions of adjacent tracks is the interval between adjacent bottle blanks processed by the hollow molding machine; the rotating rod is connected to a rotating component for driving the rotating rod to rotate.

2. The injection molding machine and molding machine intermediate station transmission mechanism according to claim 1, characterized in that: The lifting assembly includes a lifting cylinder, and an action end of the lifting cylinder is connected to the bottom of the turning platform.

3. The injection molding machine and molding machine intermediate station transmission mechanism according to claim 1 or 2, characterized in that: The rotating assembly includes a rotating cylinder, a rack and a gear. The rotating cylinder is installed on the turning platform. The action end of the rotating cylinder is linked with the rack. The rack is meshed with the gear. The gear is rolled on the rotating rod.

4. The injection molding machine and molding machine intermediate station transmission mechanism according to claim 1 or 2, characterized in that: The manipulator comprises an air gripper, fingers and a fixing rod, wherein the fingers are mounted on the air gripper and the air gripper is fixed on the fixing rod.

5. The injection molding machine and molding machine intermediate station transmission mechanism according to claim 1 or 2, characterized in that: An additional track is provided above the annular track in front of the running direction of the flipping and shifting mechanism, and a channel for hanging the tube blank is provided in the middle of the additional track. The height of the channel is lower than the retaining ring of the tube blank placed forward in the hole blank seat.

6. The injection molding machine and molding machine intermediate station transmission mechanism according to claim 1 or 2, characterized in that: The blank connecting device is sequentially spaced apart to arrange channels for the tube blanks to slide down, and the distances between the upper ends and lower ends of any two adjacent channels are equal. The distance between the upper ends of any two adjacent channels is the distance between adjacent bottle blanks processed by the injection molding machine, and the distance between the lower ends of any two adjacent channels is the distance between adjacent hole blank seats of the circular track.

7. The injection molding machine and molding machine intermediate station transmission mechanism according to claim 6, characterized in that: A valve plate is provided at the lower end of the channel, and the valve plate is connected to a blanking cylinder for controlling the valve plate to block the lower end of the channel or to move away from the lower end of the channel.

8. The injection molding machine and molding machine intermediate station transmission mechanism according to claim 6, characterized in that: A positioning strip is provided on the side of the annular track below the channel. The positioning strip is connected to the outer wall of the hole blank seat on the annular track for positioning the sliding tube blank. The positioning strip is connected to a positioning cylinder for driving the positioning strip close to or away from the hole blank seat.

9. The injection molding machine and molding machine intermediate station transmission mechanism according to claim 6, characterized in that: The blank joining device is a colander-type structure.

10. The injection molding machine and molding machine intermediate station transmission mechanism according to claim 1 or 2, characterized in that: The three-axis motion mechanism includes front and rear moving guide rails, up and down moving guide rails and left and right horizontal guide rails. The up and down moving fixed seat can be slidably installed on the upper and lower moving guide rails. The up and down moving fixed seat is connected to the upper and lower moving driving assembly for driving the upper and lower moving fixed seat to slide up and down. The upper and lower moving guide rails can be slidably installed on the front and rear moving guide rails. The up and down moving guide rails are connected to the front and rear moving driving assembly for driving the upper and lower moving guide rails to move forward and backward; the front and rear moving guide rails can be slidably installed on the left and right horizontal guide rails, and the front and rear moving guide rails are connected to the left and right horizontal moving driving assembly for driving the front and rear moving guide rails to move horizontally left and right.

Images