Card support CNC automatic feeding and discharging jig

Abstract

The utility model discloses a card holder CNC automatic feeding and discharging jig which comprises a tray, a placing base and a taking and placing head, the taking and placing head is provided with an upper base body and a lower base body, a plurality of chucks are installed on the lower base body, an air blowing nozzle is installed on the lower base body, two clamping rods are arranged on the chucks, clamping blocks are arranged at the lower ends of the clamping rods, and the lower base body is provided with a jacking block structure located between the two clamping rods. The upper ends of the two clamping rods are installed on the lower base body in the mode of being capable of horizontally moving in the front-back direction of the lower base body, a push block is arranged between the upper base body and the lower base body, inclined face mortise and tenon structures are arranged on the push block and the two clamping rods, and a lifting driving device for pushing the push block to horizontally move up and down is installed on the upper base body. Compared with the prior art, the card support is clamped by the two clamping blocks and jacked by the jacking block structure, so that the card support cannot shake in the transferring process, placement is accurate, the machining accuracy is guaranteed, the machined card support can blow away sweeps on the machined card support on the tray through the blowing nozzle, manual operation of workers is not needed, and the machining efficiency is improved.

Description

Technical Field

[0001] The utility model relates to the field of mobile phone accessories processing, in particular to a card holder CNC automatic loading and unloading fixture. Background Art

[0002] The SIM card in existing smartphones is mounted on the side of the phone's frame via a card tray. This allows the phone to insert the SIM card without having to shut down the phone and remove the battery, greatly facilitating SIM card installation and replacement. The existing card tray features a flat card plate for SIM card placement and a card cap that sits perpendicular to the card plate and blocks the card slot in the phone's frame. The card plate has a signal hole for exposing the SIM card chip. Existing card trays are manufactured by first forming a blank similar to the tray's shape. This blank is then placed on a four-axis CNC machine tool, where the CNC toolholders perform CNC machining on both sides of the blank on the card plate. The processed tray is then returned to the tray.

[0003] However, with this CNC machining method, the loading and unloading of the trays is done by workers, which undoubtedly results in low machining efficiency and high machining costs. Although there are also methods that use vacuum nozzles and robots to automatically load and unload trays from a pallet to a CNC machining jig, when the vacuum nozzle picks up the tray, the contact surface between the vacuum nozzle and the tray is only a small area, which will cause the tray to swing during the robot transfer process. Sometimes, the vacuum nozzle will produce a certain offset during placement due to unstable air pressure, making the placement of the tray on the CNC machining jig less precise and affecting the machining quality. In addition, when the vacuum nozzle loads the tray from the CNC machining jig and puts it back on the pallet, the waste chips generated during processing on the tray need to be cleaned by the worker separately, which still affects the overall work efficiency.

[0004] In view of this, the inventors of this case conducted in-depth research on the above-mentioned issues, which led to the creation of this case. Utility Model Content

[0005] The purpose of the utility model is to provide a CNC automatic loading and unloading fixture for a card tray, so as to solve the problems of low working efficiency and inaccurate placement of the card tray during CNC processing loading and unloading of the existing card tray.

[0006] In order to achieve the above purpose, the present invention adopts the following technical solution:

[0007] The card tray CNC automatic loading and unloading fixture includes a tray for placing a number of card trays on it, a placement seat for placing the trays on it, and a pick-and-place head for picking up and placing the card trays on the placement seat. The pick-and-place head has an upper seat body and a lower seat body arranged in sequence from top to bottom. A number of chucks arranged at intervals in the horizontal direction are installed on the lower seat body, and the horizontal arrangement direction of each chuck is the left and right direction. A blowing nozzle with an air outlet facing downward is installed on the front side or the rear side of the lower seat body. Two front-to-back opposite clamping rods are provided on the above-mentioned chucks. The lower ends of the clamping rods are located below the lower seat body. Clamping blocks are provided on the opposite sides of the lower ends of the two clamping rods, and the lower The base body is located between the two clamping rods and is provided with a pressing block structure located above the two clamping blocks and can move up and down and generate a downward restoring force when moving upward. The upper ends of the two clamping rods are installed on the lower base body in a manner that can be translated along the front and rear directions of the lower base body. A push block that can move up and down and whose lower end is located between the upper ends of the two clamping rods is provided between the above-mentioned upper base body and the lower base body corresponding to each clamping head. The above-mentioned push block and the two clamping rods are provided with an inclined mortise and tenon structure that pushes the two clamping rods to move away from each other as the push block moves downward and pulls the two clamping rods to move toward each other as the push block moves upward. The above-mentioned upper base body is installed with a lifting drive device that pushes the push block to move up and down.

[0008] The above-mentioned lifting drive device has a cylinder seat and a piston rod. The cylinder seat is a strip-shaped seat body extending along the horizontal arrangement direction of each chuck. The cylinder seat is provided with an independently arranged air chamber corresponding to each chuck, and an air passage is provided in the cylinder seat with one end leading to the outside of the cylinder seat and the other end connected to each air chamber. The above-mentioned piston rod is installed upright in each air chamber, and the lower end of the piston rod extends out of the cylinder seat. The above-mentioned push block is connected to the lower end of the above-mentioned piston rod.

[0009] The above-mentioned lower seat body has an upper plate body and a lower plate body. The upper plate body is tightly attached to the bottom surface of the cylinder seat and is installed together with the cylinder seat. The top surface of the lower plate body is convexly provided with a plurality of support strips extending in the front-to-back direction. The support strips are arranged in contact with the upper plate body. A guide channel extending in the front-to-back direction is formed between two adjacent support strips. The upper end parts of the two clamping rods of each clamping head correspond to the guide channels. A through hole for the push block to move up and down is opened on the upper plate body, and the lower end of the push block extends out of the above-mentioned through hole to the guide channel.

[0010] The above-mentioned clamping rod has a lower rod body and an upper slider. The lower rod body is located below the lower plate body. The lower plate body is provided with a movable hole that passes through up and down and can allow the lower rod body to move forward and backward corresponding to the lower rod body. The upper end portion of the lower rod body is integrally extended with a locking block that is movable and extends into the movable hole and is locked together with the upper slider. The upper slider is in the guide channel and the two support bars are tightly fitted. The upper slider and the push block are provided with the above-mentioned inclined mortise and tenon structure, and the above-mentioned clamping block is installed on the lower end of the lower rod body.

[0011] The above-mentioned upper slider is a strip-shaped square block extending in the front-to-back direction. The opposite surfaces of the two upper sliders have an upper inclined surface inclined downward and a lower vertical plane extending vertically. The two upper inclined surfaces constitute a speaker space that gradually shrinks from top to bottom, and the opposite surfaces of the two upper sliders are recessed with an inclined mortise and tenon that runs through from top to bottom and has the same inclination direction as the upper inclined surface. The above-mentioned push block is a trapezoidal block that is larger at the top and smaller at the bottom and matches the speaker space. The above-mentioned trapezoidal block is convexly provided with an inclined tenon that is plugged into the inclined tenon and groove on one surface facing the two upper sliders. The lower part of the above-mentioned push block is inserted into the speaker space, and the above-mentioned upper inclined surface, the inclined mortise and tenon and the above-mentioned inclined tenon constitute the said inclined mortise and tenon structure.

[0012] The above-mentioned lower rod body is a rectangular rod body, and the opposite surfaces of the two lower rod bodies in the two clamping rods are recessed with a snap-in groove running through the left and right directions. The above-mentioned clamping block is convexly provided with a snap-in strip inserted into the snap-in strip on the side facing the snap-in strip, and the above-mentioned clamping block is convexly provided with a clamping strip that can extend toward the card tray and card board on the side facing away from the snap-in strip.

[0013] The above-mentioned pressure block structure includes a mounting strip, a pressure rod and a spring. The mounting strip is locked on the above-mentioned lower plate body. The mounting strip is located between the two lower rod bodies. The lower bottom surface of the mounting strip is provided with a recessed accommodating groove corresponding to each chuck. The pressure rod is erected below the mounting strip, and the upper end of the pressure rod is embedded in the accommodating groove. The spring is installed in the accommodating groove and tensioned between the inner groove bottom of the accommodating groove and the pressure rod.

[0014] The placement seat is provided with a plurality of positioning posts which extend into the tray, and the tray is provided with positioning holes into which the positioning posts extend. The top surface of the placement seat is locked with a mounting plate outside the tray, and the mounting plate is screwed with a tightening bolt which passes through the mounting plate and extends toward the tray, and the outer wall of the tray is provided with a tightening hole into which the tightening bolt extends.

[0015] After adopting the above technical scheme, the utility model of the card holder CNC automatic loading and unloading fixture, its upper seat body is installed on the manipulator of the CNC machine. When working, the manipulator moves down to the pallet with the pick-up and placement head, and the lifting drive device drives the push block to move down during the downward movement. When the push block moves down, the two clamping rods are moved back to each other by the inclined mortise and tenon structure. When the lower ends of the two clamping rods move down to the card holder of the pallet, the top pressure block structure presses on the top surface of each card holder in the same row on the pallet, and each clamping head on the lower seat body is aligned one by one with each card holder in the same row on the pallet. The lifting drive device drives the push block to reset upward, and the push block uses the inclined mortise and tenon structure to pull the two clamping rods to move relative to each other. The relative translation of the two clamping rods makes the two clamping blocks contact with the card plate of the card holder, and the card plate of the card holder is clamped by the two clamping blocks. At this time, the card holder is clamped, and the manipulator of the CNC machine drives the upper seat body to move up to remove a whole row of card holders. Compared with the existing technology, in this new loading and unloading fixture, the tray is clamped by two clamping blocks during transfer, and the top pressure block structure is pressed against the tray, so that the tray will not shake during the transfer process. In this way, the tray is placed on the CNC fixture more accurately, ensuring the processing accuracy. At the same time, after the processed tray is placed back on the pallet, the upper seat is translated again, and the air blowing nozzle is started. The air blowing nozzle can blow away the waste chips on the tray after processing, and no manual operation is required by workers, which greatly improves the overall processing efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 It is a three-dimensional diagram of the utility model;

[0017] Figure 2 It is a structural diagram of the utility model;

[0018] Figure 3 A three-dimensional diagram of the pick-and-place head in the present invention;

[0019] Figure 4 This is a schematic diagram of the structure of the utility model with the tray omitted. DETAILED DESCRIPTION

[0020] In order to further explain the technical solution of the present invention, it is described in detail below with reference to the accompanying drawings.

[0021] The utility model of the CNC automatic loading and unloading fixture of the card holder is as follows: Figure 1-4As shown, it includes a tray 1 for placing several card trays 100 on it, a placement seat 2 for placing the tray 1 on it, and a pick-and-place head for picking up and placing the card trays on the placement seat, wherein the tray 1 is a square plate body, and an insertion hole is provided on the tray 1 for partially inserting the card plate of the card tray 100. There are several insertion holes, and each insertion hole is arranged in a matrix. The placement seat 2 is correspondingly a square structure, and several positioning columns 21 extending into the tray are installed on the placement seat 2. The positioning columns 21 are outside the range of the insertion holes. The tray 1 is provided with positioning holes 11 for the positioning columns to extend into. The positioning columns and the positioning holes cooperate to realize the positioning and placement of the tray 1 on the placement seat 2. The top surface of the placement seat 2 is locked with a mounting piece 22 outside the tray. The mounting piece 22 is outside the front of the tray 1. The mounting piece 22 is an L-shaped piece. The horizontal part of the mounting piece 22 is locked together with the top surface of the placement seat 2. The vertical part of the mounting piece 22 faces the tray 1. The mounting piece 22 is screwed with a tightening bolt 23 that passes through the vertical part of the mounting piece 22 and extends toward the tray 1. The front outer side wall of the tray 1 is recessed with a tightening hole 12 for the tightening bolt 23 to extend into. When used, the tightening bolt 23 can be rotated to make the end of the tightening bolt extend into the tightening hole 12, so that the tray 1 is double-positioned, so that the tray will not move when the pick-and-place head takes and places the card tray.

[0022] The pick-and-place head comprises an upper base 31 and a lower base 32 arranged in sequence from top to bottom, a plurality of chucks arranged in a transverse interval are mounted on the lower base 32, and the transverse arrangement direction of each chuck is the left-right direction, and a blowing nozzle 4 with its air outlet facing downward is mounted on the front side or the rear side of the lower base 32, and two front-to-back opposite clamping rods 51 are provided on the chuck, and the lower end of the clamping rod 51 is located below the lower base 32, and the opposite surfaces of the lower ends of the two clamping rods 51 are both provided with clamping blocks 52, and the lower base 32 is provided between the two clamping rods 51 and is provided with a clamping block 52 located above the two clamping blocks 52 and The top pressure block structure can move up and down and generate a downward restoring force when moving upward. The upper ends of the two clamping rods 51 are installed on the lower seat body 32 in a manner that can be translated along the front and rear directions of the lower seat body. A push block 6 that can move up and down and whose lower end is between the upper ends of the two clamping rods is provided between the upper seat body and the lower seat body corresponding to each clamping head. The push block 6 and the two clamping rods are provided with an inclined mortise and tenon structure that pushes the two clamping rods to move away from each other as the push block moves downward and pulls the two clamping rods to move toward each other as the push block moves upward. A lifting drive device that pushes the push block 6 to move up and down is installed on the upper seat body.

[0023] Preferably, the upper seat body 31 is a strip-shaped seat body extending in the left-right direction, and a mounting rod for mounting with the manipulator of the CNC machine is installed on the top surface of the upper seat body 31. The lifting drive device has a cylinder seat 71 and a piston rod 72. The cylinder seat 71 is a strip-shaped seat body extending in the left-right direction. The cylinder seat 71 is below the upper seat body 31. A mounting rod 711 passing through the outside of the upper seat body 31 is installed on the cylinder seat 71. The mounting rod 711 is externally screwed with a limit nut on the upper seat body 31, and a spring 200 is provided between the upper seat body 31 and the cylinder seat 71. The spring 200 can The downward movement of the chuck acts as a buffer. The cylinder base 71 is provided with an independently arranged air chamber corresponding to each chuck. The air chamber is a cavity extending in the vertical direction. The cylinder base is provided with an air passage (not shown in the figure) with one end leading to the outside of the cylinder base and the other end connected to each air chamber. Each air chamber is installed with an upright piston rod 72. The cylinder is also provided with a piston (not shown in the figure) connected to the upper end of the piston rod 72 and capable of moving up and down along the air chamber and sealing the cylinder. The lower end of the piston rod 72 extends out of the cylinder base 71, and the push block 6 is connected to the lower end of the piston rod 72. In this new model, the structure of the lifting drive device is equivalent to the existing cylinder principle. The piston rod moves downward when ventilating and moves upward when deflated. It will not be repeated here.

[0024] The lower seat body 32 includes an upper plate body 321 and a lower plate body 322. The upper plate body 321 is tightly attached to the bottom surface of the cylinder base 71 and is locked and installed together with the cylinder base 71. The top surface of the lower plate body 322 is convexly provided with a plurality of support strips 3221 extending in the front-to-back direction. The support strips 3221 are arranged in contact with the upper plate body 321. A guide channel extending in the front-to-back direction is formed between two adjacent support strips 3221. The upper ends of the two clamping rods 51 of each clamping head correspond to each guide channel. A through hole (not shown in the figure) is provided on the upper plate body 321 for the push block to move up and down. The lower end of the push block 6 extends out of the through hole to the guide channel.

[0025] The upper end of the lower rod 511 is integrally extended with a locking block (not shown in the figure) that is movably inserted into the movable hole and locked together with the upper slider. The upper slider is in the guide channel and the two support bars are tightly matched, that is, the upper slider 512 is clamped between the two support bars 3221, and the upper slider and the locking block are locked together by bolts. The upper slider 512 and the push block 6 are provided with the above-mentioned inclined mortise and tenon structure. Preferably, the upper slider 512 is a square strip block extending in the front and rear direction. The opposite surfaces of the two upper sliders 512 have an upper inclined surface inclined downward and a lower vertical plane extending vertically, that is, the two upper sliders facing front and back have The rear side surface of the upper slider on the front side of the block is composed of an upper inclined surface and a lower vertical plane, and the front side surface of the upper slider on the rear side is composed of an upper inclined surface and a lower vertical plane. The two upper inclined surfaces constitute a speaker space that gradually shrinks from top to bottom, and the opposite surfaces of the two upper sliders 512 are recessed with inclined tenon grooves 5121 that run through from top to bottom and have the same inclination direction as the upper inclined surfaces. The push block 6 is a trapezoidal block that is larger at the top and smaller at the bottom and matches the speaker space. An inclined tenon 61 is convexly provided on one surface of the trapezoidal block facing the two upper sliders, which is engaged with the inclined tenon groove. That is, the front and rear outer walls of the push block 6 are convexly provided with the inclined tenon 61, and the lower part of the push block 6 is inserted into the speaker space, and the lower part of the inclined tenon 61 is correspondingly inserted into the upper part of the inclined tenon groove 5121. The push block 6 is engaged with the upper slider, and the upper inclined surface, the inclined tenon groove and the inclined tenon constitute the inclined mortise and tenon structure.

[0026] The clamping block 52 is installed on the lower end of the lower rod body 511, and the lower rod body 511 is a rectangular rod body. The opposite surfaces of the two lower rod bodies in the two clamping rods are recessed with a snap-in groove running through the left and right directions, that is, the opposite surfaces of the lower ends of the two lower rod bodies facing each other front and back are recessed with such a snap-in groove (not shown in the figure). The clamping block 52 is provided with a snap-in strip inserted into the snap-in groove on one side facing the snap-in groove. By utilizing the cooperation between the snap-in strip and the snap-in groove, the clamping block 52 is provided with a clamping strip 521 that can extend toward the card tray and card board on the side facing away from the snap-in strip. Preferably, there are two such clamping strips 521, and the two clamping strips are arranged at intervals up and down.

[0027] The push block structure comprises a mounting bar 81, a push rod 82, and a spring (not shown). The mounting bar is a bar-shaped block extending in the left-right direction. The mounting bar 81 is locked to the lower plate 322 and located between the two lower rods 511, which are positioned front and rear. The lower surface of the mounting bar 81 is provided with upwardly recessed accommodating grooves (not shown) corresponding to each chuck. The push rod 82 stands upright below the mounting bar, and the upper end of the push rod 82 is embedded in the accommodating groove. The spring is installed in the accommodating groove and tensioned between the inner groove bottom of the accommodating groove and the push rod. When in use, the spring provides a buffer for the push rod 82 when pressing the card holder, and ensures that the push rod maintains a downward pressure on the card holder.

[0028] When the CNC automatic loading and unloading fixture of the present invention is used, the upper base body 31 is installed on the manipulator of the CNC machine through the mounting rod, and the manipulator of the CNC machine can drive the upper base body to move up and down and horizontally. When working, the manipulator moves down to the tray 1 with the pick-and-place head. When moving down, the cylinder seat 71 is filled with air, and the gas in the cylinder seat 71 causes each piston rod 72 to move downward. The downward movement of the movable rod 72 causes the push block 6 to move downward accordingly. Because the push block 6 and the two upper sliders 512 are matched with the inclined surfaces, the downward movement of the push block 6 will push the two upper sliders 512 to translate in opposite directions. The opposite translation of the two upper sliders 512 causes the two lower rod bodies 511 to separate in opposite directions, so that the distance between the two clamping blocks 52 is greater than the thickness of the card holder 100, and each clamping head forms a clamping channel. When the card holders in the same row are in the same clamping channel, and the pressing rods 82 just contact the card caps of each card holder, the upper seat body 31 moves slightly downward, the pressing rod 82 presses the card holder, and the spring is compressed. After that, the cylinder seat 71 is deflated. The piston rod 72 moves up, and the upward movement of the piston rod 72 causes the push block 6 to move up. Because the push block and the two upper sliders are a mortise and tenon structure with inclined surfaces, the upward movement of the push block will pull the two upper sliders to move toward each other. The relative movement of the two upper sliders causes the two lower rod bodies to move toward each other, so that the clamping strips 521 of the two clamping blocks 52 clamp the card plate of the card holder 100. Finally, the manipulator drives the upper seat body to move up and a whole row of card holders can be taken away. Similarly, when the card holder is transferred to the CNC fixture, it is only necessary to supply air to the cylinder seat 71 to make the chuck release the card holder 100. After the processing of each card holder on the CNC fixture is completed, the chuck will clamp each card holder 100 and transfer it back to the pallet 1. After the processed card holder is put back into the pallet 1, the manipulator drives the upper seat body to move horizontally again and starts the air blowing nozzle 4. The air blowing nozzle 4 can blow away the waste chips on the processed card holder. Compared with the existing technology, the new loading and unloading fixture of the present invention has two clamping blocks that clamp the card plate of the card tray when clamping the card tray, and the pressing block presses the card cap on the card tray, so that the card tray is fixed on three sides, so that the card tray will not shake during the transfer process. In this way, the placement of the card tray on the CNC fixture is more accurate, ensuring the processing accuracy. At the same time, after the processed card tray is placed back on the pallet, the upper seat body is translated again, and the blowing nozzle 4 is started. The blowing nozzle can blow away the waste chips on the processed card tray on the pallet, and no manual operation is required by workers, which greatly improves the overall processing efficiency.

[0029] The product form of the present utility model is not limited to the illustrations and embodiments of this case. Any appropriate changes or modifications made by anyone with similar ideas should be deemed to be within the patent scope of the present utility model.

Claims

1. A CNC automatic loading and unloading fixture for card trays, comprising a tray for placing a number of card trays on, a placement seat for placing the trays on, and a pick-and-place head for picking up and placing the card trays on the placement seat, characterized by: The pick-and-place head comprises an upper seat and a lower seat arranged in sequence from top to bottom, a plurality of chucks arranged at intervals in the transverse direction are mounted on the lower seat, the transverse arrangement direction of each chuck being the left and right direction, a blowing nozzle with its air outlet facing downward is mounted on the front side or the rear side of the lower seat, two front-to-back opposite clamping rods are arranged on the chuck, the lower end of the clamping rod is located below the lower seat, and clamping blocks are provided on opposite sides of the lower ends of the two clamping rods, and the lower seat is located between the two clamping rods and is provided with a clamp located above the two clamping blocks and can move up and down and upward. The upper ends of the two clamping rods are installed on the lower seat body in a way that they can be translated along the front and rear directions of the lower seat body. A push block that can move up and down and whose lower end is between the upper ends of the two clamping rods is provided between the above-mentioned upper seat body and the lower seat body corresponding to each clamping head. The above-mentioned push block and the two clamping rods are provided with an inclined mortise and tenon structure that pushes the two clamping rods to move away from each other as the push block moves downward and pulls the two clamping rods to move toward each other as the push block moves upward. A lifting drive device that pushes the push block to move up and down is installed on the above-mentioned upper seat body.

2. The CNC automatic loading and unloading fixture for Cato according to claim 1 is characterized in that: The above-mentioned lifting drive device has a cylinder seat and a piston rod. The cylinder seat is a strip-shaped seat body extending along the horizontal arrangement direction of each chuck. The cylinder seat is provided with an independently arranged air chamber corresponding to each chuck, and an air passage is provided in the cylinder seat with one end leading to the outside of the cylinder seat and the other end connected to each air chamber. The above-mentioned piston rod is installed upright in each air chamber, and the lower end of the piston rod extends out of the cylinder seat. The above-mentioned push block is connected to the lower end of the above-mentioned piston rod.

3. The CNC automatic loading and unloading fixture for Cato according to claim 2 is characterized in that: The above-mentioned lower seat body has an upper plate body and a lower plate body. The upper plate body is tightly attached to the bottom surface of the cylinder seat and is installed together with the cylinder seat. The top surface of the lower plate body is convexly provided with a plurality of support strips extending in the front-to-back direction. The support strips are arranged in contact with the upper plate body. A guide channel extending in the front-to-back direction is formed between two adjacent support strips. The upper end parts of the two clamping rods of each clamping head correspond to the guide channels. A through hole for the push block to move up and down is opened on the upper plate body, and the lower end of the push block extends out of the above-mentioned through hole to the guide channel.

4. The CNC automatic loading and unloading fixture for Cato according to claim 3 is characterized by: The above-mentioned clamping rod has a lower rod body and an upper slider. The lower rod body is located below the lower plate body. The lower plate body is provided with a movable hole that passes through up and down and can allow the lower rod body to move forward and backward corresponding to the lower rod body. The upper end portion of the lower rod body is integrally extended with a locking block that is movable and extends into the movable hole and is locked together with the upper slider. The upper slider is in the guide channel and the two support bars are tightly fitted. The upper slider and the push block are provided with the above-mentioned inclined mortise and tenon structure, and the above-mentioned clamping block is installed on the lower end of the lower rod body.

5. The CNC automatic loading and unloading fixture for Cato according to claim 4 is characterized in that: The above-mentioned upper slider is a strip-shaped square block extending in the front-to-back direction. The opposite surfaces of the two upper sliders have an upper inclined surface inclined downward and a lower vertical plane extending vertically. The two upper inclined surfaces constitute a speaker space that gradually shrinks from top to bottom, and the opposite surfaces of the two upper sliders are recessed with an inclined mortise and tenon that runs through from top to bottom and has the same inclination direction as the upper inclined surface. The above-mentioned push block is a trapezoidal block that is larger at the top and smaller at the bottom and matches the speaker space. The above-mentioned trapezoidal block is convexly provided with an inclined tenon that is plugged into the inclined tenon and groove on one surface facing the two upper sliders. The lower part of the above-mentioned push block is inserted into the speaker space, and the above-mentioned upper inclined surface, the inclined mortise and tenon and the above-mentioned inclined tenon constitute the said inclined mortise and tenon structure.

6. The CNC automatic loading and unloading fixture for Cato according to claim 4, characterized in that: The above-mentioned lower rod body is a rectangular rod body, and the opposite surfaces of the two lower rod bodies in the two clamping rods are recessed with a snap-in groove running through the left and right directions. The above-mentioned clamping block is convexly provided with a snap-in strip inserted into the snap-in strip on the side facing the snap-in strip, and the above-mentioned clamping block is convexly provided with a clamping strip that can extend toward the card tray and card board on the side facing away from the snap-in strip.

7. The CNC automatic loading and unloading fixture for Cato according to claim 4, characterized in that: The above-mentioned pressure block structure includes a mounting strip, a pressure rod and a spring. The mounting strip is locked on the above-mentioned lower plate body. The mounting strip is located between the two lower rod bodies. The lower bottom surface of the mounting strip is provided with a recessed accommodating groove corresponding to each chuck. The pressure rod is erected below the mounting strip, and the upper end of the pressure rod is embedded in the accommodating groove. The spring is installed in the accommodating groove and tensioned between the inner groove bottom of the accommodating groove and the pressure rod.

8. The CNC automatic loading and unloading fixture for Cato according to claim 1, characterized in that: The placement seat is provided with a plurality of positioning posts which extend into the tray, and the tray is provided with positioning holes into which the positioning posts extend. The top surface of the placement seat is locked with a mounting plate outside the tray, and the mounting plate is screwed with a tightening bolt which passes through the mounting plate and extends toward the tray, and the outer wall of the tray is provided with a tightening hole into which the tightening bolt extends.

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