Automobile part stamping device

Abstract

The invention discloses an automobile part stamping device. The automobile part stamping device comprises a machining platform, a stamping mechanism and a moving seat, wherein the stamping mechanism and the moving seat are arranged on the machining platform, and the moving seat can horizontally move to move towards the stamping mechanism so as to convey stamping parts; an unloading mechanism is arranged at the upper end of the moving seat and comprises an unloading belt pulley, an unloading belt and a limiting piece; two rows of discharging belt wheels are vertically and rotatably arranged at the upper end of the moving seat at intervals, each row of discharging belt wheels are in transmission connection together through a discharging belt, and two baffles matched with stamping parts are horizontally and fixedly arranged at the upper end of the moving seat at intervals. And a plurality of limiting pieces which are in one-to-one correspondence and are matched with each other are horizontally and fixedly arranged on the two discharging belts correspondingly. According to the automobile part stamping device, the movable seat is used in cooperation with the discharging mechanism arranged at the upper end of the movable seat; therefore, multiple functions of conveying the stamping part to the stamping mechanism and unloading the stamped stamping part are realized, and the working efficiency is improved.

Description

Technical Field

[0001] The invention relates to the technical field of automobile part stamping, in particular to an automobile part stamping device. Background Art

[0002] The working principle of the stamping machine is to place the metal sheet between the molds, and bend, stretch, cut, etc. the sheet through the combined stamping of the bosses and grooves in the mold to finally complete the required parts. Common application scenarios include automotive parts, home appliance parts, electrical components, etc.

[0003] After searching: Chinese patent application number is "CN202222197543.X", which discloses an automobile parts stamping die, including a base, a working platform is fixedly connected to the top of the base, a plate is arranged on the top of the working platform, a limiting assembly is slidably connected to the top of the working platform, an ejection device is arranged inside the working platform, an external frame is welded to the top of the base, and a hydraulic cylinder is arranged on the top of the external frame. The automobile parts stamping die is provided with a groove, a limiting block, an electric push rod, a screw groove, a screw, a lifting groove and a lifting plate. The electric push rod pushes the limiting block to slide in the groove, and can be adjusted left and right according to the different lengths of the plate. The screw and the lifting plate clamp and fix the plate, and can also be adjusted up and down according to the different thicknesses of the plate to prevent displacement during the stamping process.

[0004] The inventor discovered the following problems in the prior art during the implementation of the utility model:

[0005] After stamping, the existing stamping machine usually needs to manually remove the stamped automobile parts from the working platform and then replace them with new metal sheets, which is not only dangerous but also reduces the efficiency of stamping production to a certain extent.

[0006] Therefore, it is an urgent problem to be solved by the present invention to provide an automobile parts stamping device which realizes the multiple functions of conveying stamped parts to the stamping mechanism while unloading the stamped parts through the coordinated use of the movable seat and the unloading mechanism arranged at the upper end thereof during use, thereby greatly improving the working efficiency. Summary of the invention

[0007] In view of the above technical problems, the purpose of the present invention is to overcome the problem in the prior art that after stamping is completed, it is usually necessary to manually remove the stamped automobile parts from the working platform and then replace them with new metal plates, which is not only dangerous but also reduces the efficiency of stamping production to a certain extent. Thus, an automobile parts stamping device is provided, which is used in conjunction with the moving seat and the unloading mechanism arranged at the upper end thereof during use, thereby realizing the multiple functions of conveying the stamped parts to the stamping mechanism while unloading the stamped parts, thereby greatly improving the work efficiency.

[0008] In order to achieve the above-mentioned object, the present invention provides an automobile parts stamping device, the device comprising: a processing platform, a stamping mechanism respectively arranged on the processing platform, and a movable seat which can be horizontally moved to move toward the stamping mechanism to convey the stamped parts thereto;

[0009] The upper end of the movable seat is provided with a discharge mechanism, which comprises a discharge pulley, a discharge belt and a limiter; wherein,

[0010] Two rows of unloading pulleys are arranged at intervals and vertically rotatably on the upper end of the movable seat, and each row of the unloading pulleys is connected together by a unloading belt transmission, and two baffles adapted to the stamping part are arranged at intervals and horizontally fixed on the upper end of the movable seat between the two unloading belts, the spacing between the two baffles is equal to the length of the stamping part, and a number of corresponding and adapted limit members are horizontally fixed on the two unloading belts above the baffles, the bottom end of each limit member abuts against the corresponding baffle, and the spacing between each adjacent two limit members is equal to the width of the stamping part, and a row of avoidance holes is evenly and vertically penetrated on the movable seat between the two baffles.

[0011] Preferably, the unloading mechanism further comprises: a driving member, the driving member comprises: a driving motor, an incomplete gear and a driving gear; wherein,

[0012] The central rotating shaft of any one of the unloading pulleys in each row extends to the interior of the movable seat and is coaxially fixed with a driving gear. A driving motor is vertically fixed inside the movable seat next to the driving gear, and an incomplete gear intermittently meshed with the driving gear is coaxially fixed on the output shaft of the driving motor.

[0013] Preferably, the device further comprises a moving mechanism for driving the moving seat to move in the horizontal direction, the moving mechanism comprising: a moving tooth plate and a moving gear; wherein,

[0014] A moving tooth plate is horizontally fixed on one side of the moving seat, and a row of moving gears meshing with the moving tooth plate are spaced and horizontally rotatably arranged on the upper end of the processing platform which is located beside the moving tooth plate and has a hollow structure inside. The bottom ends of the central rotating shafts of a row of the moving gears extend into the interior of the processing platform, and the central rotating shafts of every two adjacent moving gears located inside the processing platform are connected together by a transmission belt, and the bottom end of the central shaft of any one of the moving gears is coaxially connected to a moving motor vertically fixed inside the processing platform through a coupling.

[0015] Preferably, the punching mechanism comprises: a gantry and a punch; wherein,

[0016] A gantry is vertically fixed on the upper end of the processing platform, a lifting plate is vertically and liftably arranged inside the gantry, and at least one punch capable of punching stamped parts is vertically fixed on the lifting plate, and a blanking opening for the punch to pass through is vertically penetrated through the upper end of the processing platform directly below the punch.

[0017] Preferably, the device further comprises an electric telescopic rod for driving the lifting plate to move up and down in a vertical direction; wherein,

[0018] An electric telescopic rod is vertically penetrated and fixedly arranged on the top of the gantry, and the telescopic end of the electric telescopic rod is fixed on the lifting plate.

[0019] Preferably, a receiving box with an opening facing upward is fixedly arranged horizontally beside the processing platform to receive the stamped parts.

[0020] Preferably, a drawer which can be drawn out from a side wall of the processing platform is horizontally and movably provided inside the processing platform.

[0021] Preferably, at least two guide rails are spaced apart and horizontally fixed at the upper end of the processing platform, and the bottom end of the movable seat is spaced apart and partially recessed inward to form guide grooves compatible with the two guide rails, and the movable seat can be slidably disposed on the two guide rails through the two guide grooves.

[0022] According to the above technical solution, the automobile parts stamping device provided by the present invention has the following beneficial effects when used:

[0023] (1) When in use, a row of stamping parts is placed on the movable seat between the two baffles, and the two sides of each stamping part are limited by each adjacent two limiting members on the two unloading belts to limit the stamping part in its width direction, and the other two sides of each stamping part are limited by the two baffles to limit the stamping part in its length direction, so as to prevent the stamping part from being offset during the process of moving the movable seat toward the stamping mechanism, thereby affecting the correctness of the stamping position of the stamping mechanism on the stamping part.

[0024] (2) After the loading is completed, the movable seat is driven to move toward the stamping mechanism, so that a row of stamping parts on the upper end of the movable seat can be transported in an orderly manner to the bottom of the stamping mechanism so that the stamping mechanism can perform stamping operations on the row of stamping parts in an orderly manner, thereby realizing the function of automatic feeding.

[0025] (3) After the punch of the stamping mechanism has finished stamping each stamped part and separated from the stamped part, the moving seat can continue to move to move the stamped part away from the stamping mechanism, and in the process of conveying another stamped part connected to it to the bottom of the stamping mechanism, the two unloading belts can be driven to transmit in the horizontal direction to drive a row of stamped parts placed between the two to move forward one station toward the direction of the stamping mechanism. At the same time, the stamped workpiece leaves from the bottom of the stamping mechanism and falls from one end of the processing platform, thereby realizing the function of automatic unloading.

[0026] In summary, the present invention realizes the multiple functions of conveying stamped parts to the stamping mechanism while unloading the stamped parts through the coordinated use of the movable seat and the unloading mechanism arranged at the upper end thereof, thereby greatly improving work efficiency.

[0027] Other features and advantages of the present invention will be described in detail in the subsequent specific implementation mode; and the parts not involved in the present invention are the same as the prior art or can be implemented by using the prior art. BRIEF DESCRIPTION OF THE DRAWINGS

[0028] The accompanying drawings are used to provide a further understanding of the present invention and constitute a part of the specification. Together with the following specific embodiments, they are used to explain the present invention but do not constitute a limitation of the present invention. In the accompanying drawings:

[0029] Figure 1 It is a structural schematic diagram of an automobile parts stamping device provided in a preferred embodiment of the present invention;

[0030] Figure 2 It is a structural top view of a processing platform of an automobile parts stamping device provided in a preferred embodiment of the present invention;

[0031] Figure 3 It is a schematic diagram of the assembly of a moving seat and a processing platform of an automobile parts stamping device provided in a preferred embodiment of the present invention;

[0032] Figure 4 It is a structural schematic diagram of a moving seat of an automobile parts stamping device provided in a preferred embodiment of the present invention;

[0033] Figure 5 It is a structural cross-sectional view of a movable seat of an automobile part stamping device provided in a preferred embodiment of the present invention.

[0034] Description of Reference Numerals

[0035] 1. Processing platform; 2. Gantry; 3. Punch; 4. Moving seat; 5. Unloading mechanism; 501. Unloading pulley; 502. Unloading belt; 503. Limiting member; 504. Driving member; 6. Moving mechanism; 601. Moving tooth plate; 602. Moving gear; 7. Baffle; 8. Receiving box; 9. Electric telescopic rod; 10. Drawer; 11. Guide rail; 12. Dropping port; 13. Avoidance hole. DETAILED DESCRIPTION

[0036] The specific implementation of the present invention is described in detail below in conjunction with the accompanying drawings. It should be understood that the specific implementation described here is only used to illustrate and explain the present invention, and is not used to limit the present invention.

[0037] like Figure 1-5 As shown, the present invention provides an automobile parts stamping device, the device comprising: a processing platform 1, a stamping mechanism respectively arranged on the processing platform 1, and a moving seat 4 which can be horizontally moved to move toward the stamping mechanism to convey the stamped parts;

[0038] The upper end of the movable seat 4 is provided with a discharge mechanism 5, and the discharge mechanism 5 comprises: a discharge pulley 501, a discharge belt 502 and a limiter 503; wherein,

[0039] Two rows of unloading pulleys 501 are arranged at intervals and vertically rotatably on the upper end of the movable seat 4, and each row of the unloading pulleys 501 is connected together by a unloading belt 502. Two baffles 7 adapted to the stamping part are arranged at intervals and horizontally fixed on the upper end of the movable seat 4 between the two unloading belts 502. The spacing between the two baffles 7 is equal to the length of the stamping part. A plurality of corresponding and adapted limiting members 503 are horizontally fixed on the two unloading belts 502 above the baffles 7. The bottom end of each limiting member 503 abuts against the corresponding baffle 7, and the spacing between each adjacent two limiting members 503 is equal to the width of the stamping part. A row of avoidance holes 13 is evenly and vertically penetrated on the movable seat 4 between the two baffles 7.

[0040] In the above scheme, when in use, a row of stamping parts is placed on the moving seat 4 between the two baffles 7, such as Figure 1-2 As shown, each two adjacent limiting members 503 on the two unloading belts 502 are used to limit the two sides of each stamping part so as to limit the stamping part in its width direction, and the other two sides of each stamping part are limited by the two baffles 7 so as to limit the stamping part in its length direction, so as to prevent the stamping part from being offset during the process of moving the movable seat 4 toward the stamping mechanism, thereby affecting the correctness of the stamping position of the stamping mechanism on the stamping part.

[0041] When the loading is completed, the movable seat 4 is driven to move toward the stamping mechanism, so that a row of stamping parts on the upper end of the movable seat 4 are transported in sequence and order to the bottom of the stamping mechanism for the stamping mechanism to perform stamping operations on the row of stamping parts in sequence and order, thereby realizing the function of automatic feeding.

[0042] When the punch 3 of the stamping mechanism finishes stamping each stamped part and separates from the stamped part, the moving seat 4 can continue to be moved to move the stamped part away from the stamping mechanism, and in the process of conveying another stamped part connected to it to the bottom of the stamping mechanism, the two unloading belts 502 can be driven to transmit in the horizontal direction to drive a row of stamped parts placed between the two to move forward one station in the direction of the stamping mechanism. At the same time, the stamped workpiece leaves from the bottom of the stamping mechanism and falls from one end of the processing platform 1, thereby realizing the function of automatic unloading.

[0043] In summary, the present invention realizes the multiple functions of conveying stamped parts to the stamping mechanism while unloading the stamped parts through the coordinated use of the movable seat 4 and the unloading mechanism 5 arranged at the upper end thereof, thereby greatly improving work efficiency.

[0044] In a preferred embodiment of the present invention, the unloading mechanism 5 further includes: a driving member 504, and the driving member 504 includes: a driving motor, an incomplete gear and a driving gear; wherein,

[0045] The central rotating shaft of any one of the unloading pulleys 501 in each row of the unloading pulleys 501 extends to the interior of the movable seat 4 and is coaxially fixed with a driving gear. A driving motor is vertically fixed inside the movable seat 4 next to the driving gear, and an incomplete gear intermittently meshingly connected to the driving gear is coaxially fixed on the output shaft of the driving motor.

[0046] In the above scheme, if Figure 1-4 As shown, there are at least two unloading pulleys 501 in each row, and the side wall portion of each unloading pulley 501 is recessed inward to form a limiting groove that matches the unloading belt 502, so that when the unloading pulley 501 rotates, the unloading belt 502 will not fall off the unloading pulley 501.

[0047] When in use, the driving motor is started to drive the incomplete gear coaxially connected thereto to rotate, so that the incomplete gear can intermittently mesh with the driving gear during the rotation. During this process, when the incomplete gear is in meshing connection with the driving gear and the two are disengaged from the meshing relationship, the two unloading belts 502 can be driven in the horizontal direction and, through the cooperation of the limiting members 503 on both, a row of stamping parts horizontally placed between the two unloading belts 502 can be driven to move one stamping part width toward the stamping mechanism, so that the two unloading belts 502 can push the stamping parts toward the stamping mechanism one station each time they run.

[0048] In a preferred embodiment of the present invention, the device further comprises a moving mechanism 6 for driving the moving seat 4 to move in the horizontal direction, wherein the moving mechanism 6 comprises: a moving tooth plate 601 and a moving gear 602; wherein,

[0049] A moving tooth plate 601 is horizontally fixed on one side of the moving seat 4, and a row of moving gears 602 meshing with the moving tooth plate 601 are spaced apart and horizontally rotatably arranged on the upper end of the processing platform 1 which is located beside the moving tooth plate 601 and has a hollow structure inside. The bottom ends of the central rotating shafts of a row of the moving gears 602 extend to the interior of the processing platform 1, and the central rotating shafts of every two adjacent moving gears 602 located inside the processing platform 1 are connected together by a transmission belt, and the bottom end of the central shaft of any one of the moving gears 602 is coaxially connected to a moving motor vertically fixed inside the processing platform 1 through a coupling.

[0050] In the above scheme, when in use, the moving motor is started to drive the moving gear 602 coaxially connected thereto to rotate, and the central rotating shafts of each two adjacent moving gears 602 in all the moving gears 602 are connected together through a transmission belt transmission. Therefore, by starting the moving motor, all the moving gears 602 can be driven to rotate synchronously. At the same time, a row of the moving gears 602 can drive the moving tooth plate 601 meshing with it to drive the moving seat 4 toward the stamping mechanism in the horizontal direction during the rotation process, so as to send the row of stamping parts horizontally placed on the moving seat 4 to the stamping mechanism one by one in an orderly manner, so that the stamping mechanism can perform stamping operations on the stamping parts transferred to the bottom thereof one by one in turn.

[0051] In a preferred embodiment of the present invention, the punching mechanism comprises: a gantry 2 and a punch 3; wherein,

[0052] A gantry 2 is vertically fixed on the upper end of the processing platform 1, a lifting plate is vertically and liftably arranged inside the gantry 2, and at least one punch 3 capable of punching stamped parts is vertically fixed on the lifting plate, and a blanking port 12 for the punch 3 to pass through is vertically penetrated through the upper end of the processing platform 1 directly below the punch 3.

[0053] In the above scheme, when in use, the lifting plate is driven to drive the punch 3 to move up and down in the vertical direction, so that the punch 3 can punch the stamping part located directly below it during the descending process and separate from the stamping part after punching.

[0054] In a preferred embodiment of the present invention, the device further comprises an electric telescopic rod 9 for driving the lifting plate to rise and fall in the vertical direction; wherein,

[0055] An electric telescopic rod 9 is vertically and fixedly provided on the top of the gantry 2, and the telescopic end of the electric telescopic rod 9 is fixed on the lifting plate.

[0056] In the above scheme, the lifting plate is driven by the electric telescopic rod 9 to drive the punch 3 to move up and down in the vertical direction, so that the punch 3 can punch the stamping part located directly below it during the descent process and separate from the stamping part after stamping.

[0057] In addition, the electric telescopic rod 9 is a servo electric cylinder or a pneumatic cylinder, and the servo electric cylinder and the pneumatic cylinder are existing well-known technical means, therefore, the specific structure and working principle of the servo electric cylinder and the pneumatic cylinder will not be repeated here.

[0058] In a preferred embodiment of the present invention, a receiving box 8 with an opening facing upward is horizontally fixedly disposed beside the processing platform 1 to receive the punched parts.

[0059] In the above scheme, when in use, when the movable seat 10 transports a row of stamping parts from right to left to the stamping mechanism intermittently through the unloading mechanism 5 at its upper end, as shown in FIG. Figure 1 As shown, by starting the two unloading belts 502 on the unloading mechanism 5 to run in the horizontal direction, the stamped parts can be pushed into the receiving box 8 from the left end of the processing platform 1 in sequence and in an orderly manner, thereby realizing the function of automatically collecting the stamped parts. There is no need to manually move the stamped parts from the upper end of the moving seat 4, which saves time and effort, thereby improving work efficiency and reducing the workload of the staff.

[0060] In a preferred embodiment of the present invention, a drawer 10 which can be drawn out from a side wall of the processing platform 1 is horizontally and movably provided inside the processing platform 1 .

[0061] In the above scheme, waste generated by the stamping mechanism in the process of stamping multiple stamping parts on the movable seat 1 is received through the drawer 10, which enters the processing platform 2 from the blanking groove 12 and falls into the drawer 10. The waste generated in the stamping process is collected by the drawer 10. When the waste in the drawer 10 needs to be cleaned, it is only necessary to pull the drawer 10 to remove the drawer 10 from the side wall of the processing platform 1 to facilitate the cleaning of the waste in the drawer 10, thereby realizing the function of automatically collecting waste during the stamping process.

[0062] In addition, the drawer 10 is an existing disclosed technical means, so its specific structure and use will not be repeated here.

[0063] In a preferred embodiment of the present invention, at least two guide rails 11 are spaced apart and horizontally fixed on the upper end of the processing platform 1, and the bottom end of the movable seat 4 is spaced apart and partially recessed inward to form guide grooves compatible with the two guide rails 11, and the movable seat 4 is slidably disposed on the two guide rails 11 through the two guide grooves.

[0064] In the above solution, by using the two guide rails 11 in coordination with the two guide grooves of the moving seat 4 , it is possible to ensure that the moving seat 4 can move back and forth in a straight line on the processing platform 1 smoothly and reliably.

[0065] In summary, the automobile parts stamping device provided by the present invention overcomes the problem in the prior art that after stamping is completed, it is usually necessary to manually remove the stamped automobile parts from the working platform and then replace them with new metal plates, which is not only dangerous but also reduces the efficiency of stamping production to a certain extent.

[0066] The preferred embodiments of the present invention are described in detail above in conjunction with the accompanying drawings. However, the present invention is not limited to the specific details in the above embodiments. Within the technical concept of the present invention, a variety of simple modifications can be made to the technical solution of the present invention, and these simple modifications all belong to the protection scope of the present invention.

[0067] It should also be noted that the various specific technical features described in the above specific embodiments can be combined in any suitable manner without contradiction. In order to avoid unnecessary repetition, the present invention will not further describe various possible combinations.

[0068] In addition, various embodiments of the present invention may be arbitrarily combined, and as long as they do not violate the concept of the present invention, they should also be regarded as the contents disclosed by the present invention.

Claims

1. An automobile parts stamping device, characterized in that: The device comprises: a processing platform (1), a stamping mechanism respectively arranged on the processing platform (1), and a movable seat (4) which can be horizontally moved to move toward the stamping mechanism to convey the stamped parts thereto; A discharge mechanism (5) is disposed at the upper end of the movable seat (4), and the discharge mechanism (5) comprises: a discharge pulley (501), a discharge belt (502) and a limiter (503); wherein: Two rows of discharge pulleys (501) are arranged at intervals and vertically rotatably on the upper end of the movable seat (4), and each row of the discharge pulleys (501) is connected together by a discharge belt (502). Two baffles (7) adapted to the stamping part are arranged at intervals and horizontally fixed on the upper end of the movable seat (4) between the two discharge belts (502). The spacing between the two baffles (7) is equal to the length of the stamping part. A plurality of corresponding and adapted limiting members (503) are horizontally fixed on the two discharge belts (502) above the baffles (7). The bottom end of each limiting member (503) abuts against the corresponding baffle (7), and the spacing between each two adjacent limiting members (503) is equal to the width of the stamping part. A row of avoidance holes (13) is evenly and vertically penetrated on the movable seat (4) between the two baffles (7).

2. The automobile parts stamping device according to claim 1, characterized in that: The unloading mechanism (5) further comprises: a driving member (504), wherein the driving member (504) comprises: a driving motor, an incomplete gear and a driving gear; wherein: The central rotating shaft of any one of the unloading pulleys (501) in each row of the unloading pulleys (501) extends to the interior of the movable seat (4) and is coaxially fixed with a driving gear. A driving motor is vertically fixed inside the movable seat (4) located next to the driving gear, and an incomplete gear intermittently meshed with the driving gear is coaxially fixed on the output shaft of the driving motor.

3. The automobile parts stamping device according to claim 1, characterized in that: The device also includes a moving mechanism (6) for driving the moving seat (4) to move in the horizontal direction, and the moving mechanism (6) includes: a moving tooth plate (601) and a moving gear (602); wherein: A moving tooth plate (601) is horizontally fixedly arranged on one side of the moving seat (4), and a row of moving gears (602) meshingly connected to the moving tooth plate (601) are arranged at intervals and horizontally rotatably on the upper end of the processing platform (1) which is located beside the moving tooth plate (601) and has a hollow structure inside. The bottom ends of the central rotating shafts of a row of the moving gears (602) extend into the interior of the processing platform (1), and the central rotating shafts of every two adjacent moving gears (602) located inside the processing platform (1) are connected together through a transmission belt, and the bottom end of the central shaft of any one of the moving gears (602) is coaxially connected to a moving motor vertically fixed inside the processing platform (1) through a coupling.

4. The automobile parts stamping device according to claim 1, characterized in that: The punching mechanism comprises: a gantry (2) and a punch (3); wherein: A gantry (2) is vertically fixedly arranged on the upper end of the processing platform (1), a lifting plate is vertically and liftably arranged inside the gantry (2), and at least one punch (3) capable of punching a stamped part is vertically fixedly arranged on the lifting plate, and a blanking opening (12) for the punch (3) to pass through is vertically penetrated through the upper end of the processing platform (1) directly below the punch (3).

5. The automobile parts stamping device according to claim 4, characterized in that: The device also includes an electric telescopic rod (9) for driving the lifting plate to move up and down in a vertical direction; wherein: An electric telescopic rod (9) is vertically and fixedly provided on the top of the gantry (2), and the telescopic end of the electric telescopic rod (9) is fixed on the lifting plate.

6. The automobile parts stamping device according to claim 1, characterized in that: A receiving box (8) with an opening facing upward is fixedly arranged horizontally on one side of the processing platform (1) to receive the punched parts.

7. The automobile parts stamping device according to claim 6, characterized in that: A drawer (10) which can be drawn out from the side wall of the processing platform (1) is horizontally and movably arranged inside the processing platform (1).

8. The automobile parts stamping device according to claim 1, characterized in that: At least two guide rails (11) are arranged at intervals and fixedly arranged horizontally on the upper end of the processing platform (1), and the bottom end of the movable seat (4) is arranged at intervals and partially recessed inwards to form guide grooves matching the two guide rails (11), and the movable seat (4) is slidably arranged on the two guide rails (11) through the two guide grooves.

Images