Special machine for automatically pressing steel balls to block auxiliary holes of products

Through the coordination of mechanical limit mechanism and servo positioning, the problems of low efficiency and bulky size of existing special machines when sealing process holes at different positions on the same plane are solved, and efficient and precise steel ball sealing is achieved to meet the product's pressing force and position requirements.

CN223353465UActive Publication Date: 2025-09-19FAIST PRECISION TECH (SUZHOU) CO LTD
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Patent Information

Application Number
CN202422453582.0
Authority / Receiving Office
CN · China
Patent Type
Utility models(China)
Current Assignee / Owner
Filing Date
2024-10-11
Publication Date
2025-09-19
Estimated Expiration
2034-10-11

AI Technical Summary

Technical Problem

Existing special machines require multiple structures to cooperate when sealing process holes located on the same plane but at different front and back positions, which makes the machine bulky and inefficient. It is also easy for multiple steel balls to be pressed into one process hole, which cannot meet the product's pressing force and position requirements.

Method used

A mechanical limit mechanism and a multi-position cylinder-driven limit seat are used to brake the first pressure rod from the upper and lower sides through the limit seat. In conjunction with the servo positioning mechanism and fixture, it ensures that only one steel ball is pressed into each process hole. The number of steel balls and the pressing force are detected by visual sensors and pressure sensors to achieve precise sealing.

Benefits of technology

It achieves efficient sealing of process holes at different positions on the same plane, reduces the overall dimensions of the special machine, improves sealing efficiency, avoids the phenomenon of multiple steel balls being pressed into the same hole, and meets the technical requirements of the product.

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Abstract

The utility model relates to a special machine for automatically pressing a steel ball to block a product fabrication hole, which comprises a first pressing mechanism, a second pressing mechanism and a third pressing mechanism, the first pressing mechanism comprises a first air cylinder and a first pressing rod extending along a first direction, and the first air cylinder drives the first pressing rod to move along the first direction to press the steel ball into the fabrication hole; the mechanical limiting mechanism comprises a sliding seat, a second air cylinder driving the sliding seat to move in the first direction, a multi-position air cylinder arranged on the sliding seat and a limiting seat, the multi-position air cylinder drives the limiting seat to reciprocate in the second direction, the limiting seat is provided with a through hole, the first pressing rod penetrates through the through hole, and the limiting seat is convexly provided with a limiting part in the first direction; the limiting part is used for abutting against the steel ball, and the limiting seat abuts against the first pressing rod from the two sides and brakes the first pressing rod in the first direction. The mechanical limiting mechanism is arranged, so that the plugging effect and the plugging efficiency of process holes which are located in the same plane and are different in front and back positions are improved, and the boundary dimension of the special machine is reduced.
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Description

Technical Field

[0001] The utility model relates to the technical field of process hole plugging, in particular to a special machine for automatically pressing steel balls to plug product process holes. Background Art

[0002] The processing holes left after the on-site machined products need to be sealed with steel balls. The processing holes are distributed at 10 different positions of the products. The diameters and depths of the product process holes that need to be sealed are also different. Some process holes are located on the same horizontal plane and have the same orientation, but there are differences in depth (i.e., front and back positions). If manual pressing is used, the efficiency is low and prone to errors, and the technical requirements of the product for the pressing force and position of the pressed steel balls cannot be met. At present, special machines are generally used to automatically complete the steel ball sealing of process holes. However, due to technical limitations, multiple steel balls are often pressed into one product process hole. Once the product is scrapped, it will bring about a huge waste of production costs. Moreover, the special machine has complex actions when sealing process holes with different front and back positions, and requires the coordinated cooperation of multiple structures, which leads to the bloated special machine and a large footprint. Therefore, how to achieve that only one steel ball is pressed into the process hole, and better seal the process holes located on the same plane but with different front and back positions is the problem to be solved by the invention. Utility Model Content

[0003] To this end, the technical problem to be solved by the present invention is to overcome the problem in the prior art that the sealing of process holes located in the same plane but in different front and back positions involves the coordinated cooperation of multiple structures, resulting in a large size of the special machine, and thus provide a special machine for automatically pressing steel balls to seal the process holes of products, which improves the sealing effect of process holes located in the same plane but in different front and back positions, improves the sealing efficiency, and reduces the external dimensions of the special machine.

[0004] In order to solve the above technical problems, the utility model provides a special machine for automatically pressing steel balls to seal product process holes, comprising:

[0005] A first press-fitting mechanism includes a first cylinder and a first press rod extending along a first direction, wherein the first cylinder drives the first press rod to move along the first direction to press the steel ball into the process hole;

[0006] A mechanical limiting mechanism includes a slide, a second cylinder driving the slide to move along the first direction, a multi-position cylinder and a limit seat arranged on the slide, the multi-position cylinder driving the limit seat to move back and forth along the second direction, wherein the limit seat is provided with a through hole, the first pressure rod passes through the through hole, the limit seat is provided with a convex limiting portion along the first direction, the limiting portion is used to abut the steel ball, and the limit seat presses the first pressure rod from both sides and brakes the first pressure rod in the first direction.

[0007] In one embodiment of the present invention, it also includes a silo, which is provided with a accommodating cavity and a ball pushing mechanism, the accommodating cavity is provided with a first conical surface, the bottom of the first conical surface is provided with a first discharge hole, the ball pushing mechanism includes a push rod and a third cylinder, the end of the push rod is set to the second conical surface, and the third cylinder drives the push rod to extend horizontally into the accommodating cavity so that the second conical surface moves to above the first discharge hole.

[0008] In one embodiment of the present invention, the hopper also includes a discharge mechanism, which is arranged below the accommodating cavity, and the discharge mechanism includes a fixed plate, a staggered plate, and a fourth cylinder for pushing the staggered plate to move, wherein a slide groove is provided in the fixed plate, and the slide groove is conformally matched with the staggered plate, and the staggered plate is located in the slide groove, and the fixed plate is respectively provided with a non-coaxial second discharge hole and a third discharge hole on the upper and lower sides of the slide groove, and the second discharge hole is arranged opposite to the first discharge hole, and the staggered plate is provided with a fourth discharge hole, and the staggered plate is moved so that the fourth discharge hole is sequentially opposite to the second discharge hole and the third discharge hole, wherein the fourth discharge hole can only accommodate one steel ball.

[0009] In one embodiment of the present invention, a servo positioning mechanism and a clamp are further included, wherein the servo positioning mechanism is used to drive the clamp to move along a third direction and sequentially pass through a plurality of press-fitting stations.

[0010] In one embodiment of the present invention, the limit seat is provided with two limit blocks spaced apart along the second direction, the through hole is provided between the two limit blocks, the limit portion is provided on the two limit blocks, and both limit blocks are provided with a contoured groove, which is provided opposite to the first pressure rod.

[0011] In one embodiment of the present invention, it also includes a first steel feeding mechanism connected to the clamp, which is arranged corresponding to the first pressing mechanism. The first steel feeding mechanism includes a conveying hose and a feeding seat. The feeding seat is provided with multiple feeding channels, and one end of each feeding channel is aligned with the process hole, and the other end is aligned with the front end of the first pressure rod; one end of the conveying hose is connected to the feeding channel, and the other end is connected to the third discharge hole.

[0012] In one embodiment of the present invention, a visual sensor is further included, and the visual sensor is used to detect the number of the steel balls in the delivery hose.

[0013] In one embodiment of the present invention, it further includes a plurality of pressing mechanisms, which are respectively arranged corresponding to a plurality of pressing stations. The plurality of pressing mechanisms each include a pressing rod and a cylinder for driving the pressing rod to move, and the plurality of pressing rods are all aligned with the process holes.

[0014] In one embodiment of the present invention, the first press-fitting mechanism and the plurality of press-fitting mechanisms are all equipped with a pressure sensor and a displacement sensor, the pressure sensor being used to detect the pressing force of the steel ball; the displacement sensor being used to detect the displacement of the steel ball in the process hole.

[0015] In one embodiment of the present invention, a status signboard is further included, wherein the status signboard is provided with a three-dimensional pattern of the product, position numbers and indicator lights are provided at the multiple process holes of the three-dimensional pattern, and the multiple indicator lights are electrically connected to the pressure sensor and the displacement sensor.

[0016] In one embodiment of the present invention, the third discharge hole is arranged higher than the process hole.

[0017] In one embodiment of the present invention, a plurality of the first conical surfaces are linearly distributed in the silo, and each of the first conical surfaces is configured with the ball pushing mechanism and the material discharging mechanism.

[0018] In one embodiment of the present invention, the utility model further comprises a plurality of the silos, wherein the plurality of silos accommodate steel balls of various diameters.

[0019] The above technical solution of the utility model has the following beneficial effects compared with the prior art:

[0020] The special machine for automatically pressing steel balls to seal product process holes described in the present invention, by setting a mechanical limit mechanism, uses a multi-position cylinder to drive the limit seat to reciprocate and rise to a predetermined height, whereby the first pressing rod is respectively supported from above and below by the limit seat to achieve braking, so as to leave time for adjusting the position of the product, ensuring that multiple process holes located in the same plane but at different front and rear positions can be aligned with the front end of the first pressing rod in sequence to complete the pressing of the steel ball, so that one cylinder can complete the steel ball pressing action of multiple process holes at different positions, greatly reducing the external dimensions of the special machine; a limit portion is set on the limit seat, and the second cylinder is used to drive the limit seat to approach the steel ball to limit it, whereby the limit seat can not only brake the first pressing rod, but also prevent the steel ball from falling from the feeding channel, thereby improving the continuity of the ball pressing and blocking actions. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] In order to make the content of the utility model easier to understand, the utility model is further described in detail below based on the specific embodiments of the utility model and in conjunction with the accompanying drawings, wherein

[0022] Figure 1 This is a structural diagram of a special machine for automatically pressing steel balls to seal product process holes in a preferred embodiment of the present utility model;

[0023] Figure 2 for Figure 1 The schematic diagram of the structure of one of the silos of a special machine for automatically pressing steel balls to seal product process holes is shown;

[0024] Figure 3 for Figure 2 A schematic structural diagram of a cross-sectional view of the material cylinder shown;

[0025] Figure 4 for Figure 1 The enlarged view of the mechanical limit mechanism is shown at A;

[0026] Figure 5 for Figure 1 The special machine for automatically pressing steel balls to seal product process holes includes a partial enlarged view of the first steel ball feeding mechanism;

[0027] Figure 6 for Figure 3 The structural schematic diagram of the first fixed plate is shown.

[0028] Description of the accompanying drawings: 1. First pressing mechanism; 11. First pressing rod; 2. Second pressing mechanism; 3. Third pressing mechanism; 4. Fourth pressing mechanism; 5. Machine; 51. Clamp; 52. Product; 6a. First hopper; 6b. Second hopper; 6c. Third hopper; 6d. Fourth hopper; 61. Fourth cylinder; 61a. Offset plate; 61b. Fourth discharge hole; 62. Third cylinder; 621. Push rod; 622. Second cone; 64a. Second fixing plate; 64b. Third discharge hole; 641. First Discharge hole; 642, accommodating chamber; 643, first conical surface; 65a, first fixed plate; 65b, second discharge hole; 65c, slide groove; 66, discharge port; 7, mechanical limit mechanism; 71, slide seat; 72, piston rod of multi-position cylinder; 73, first limit block; 74, contour groove; 75, limit portion; 76, second limit block; 77, limit seat; 78, through hole; 8, first steel ball feeding mechanism; 81, feed port; 82, feeding channel; 83, feeding seat; X, third direction; Y, first direction; Z, second direction. DETAILED DESCRIPTION

[0029] The present invention will be further described below with reference to the accompanying drawings and specific embodiments so that those skilled in the art can better understand the present invention and implement it. However, the embodiments are not intended to limit the present invention.

[0030] Example

[0031] Reference Figure 1 and 4 As shown, in one embodiment of the present utility model, a special machine for automatically pressing steel balls to seal product process holes includes:

[0032] The first pressing mechanism 1 includes a first cylinder and a first pressing rod 11 extending along a first direction Y. The first cylinder drives the first pressing rod 11 to move along the first direction Y to press three steel balls into three process holes at different front and rear positions.

[0033] The mechanical limiting mechanism 7 is used in conjunction with the first pressing mechanism 1. The mechanical limiting mechanism 7 includes a slide 71, a guide rail, a second cylinder that drives the slide 71 to move along the first direction Y, a multi-position cylinder and a limiting seat 77 arranged on the slide 71. The limiting seat 77 is vertically slidably connected to the slide 71 through a guide column. The multi-position cylinder drives the limiting seat 77 to reciprocate along the second direction Z. The limiting seat 77 is provided with a through hole 78. The first pressure rod 11 passes through the through hole 78. The limiting seat 77 is provided with a convex limiting portion 75 along the first direction Y. The limiting portion 75 is used to abut the steel ball to prevent the steel ball from falling off. The seat 77 presses the first pressure rod 11 from the upper and lower sides respectively and brakes the first pressure rod 11 in the first direction Y. Specifically, the piston rod 72 of the multi-position cylinder has three predetermined heights. When the piston rod 72 is at the highest height, the limit seat 77 pushes up the first pressure rod 11. When the piston rod 72 is at the lowest height, the limit seat 77 presses down the first pressure rod 11. When the piston rod 72 is at the middle height, there is no force between the limit seat 77 and the first pressure rod 11. The purpose is to achieve that the first cylinder only extends once to complete the sealing of the three process holes, thereby simplifying the pressing process; the first direction Y is the horizontal direction, and the second direction Z is the vertical direction.

[0034] Reference Figure 2 and 3 As shown, it also includes a hopper 6a, which is provided with a accommodating chamber 642 and a ball pushing mechanism. The accommodating chamber 642 is used to accommodate multiple steel balls. The bottom of the accommodating chamber 642 is provided with a first conical surface 643. The bottom of the first conical surface 643 is provided with a first discharge hole 641. The steel balls fall from the first discharge hole 641 by their own gravity. The ball pushing mechanism includes a push rod 621 and a third cylinder 62. The third cylinder 62 drives the push rod 621 to extend horizontally into the accommodating chamber 642 so that the second conical surface 622 moves to above the first discharge hole 641, which is used to push the steel balls into the first discharge hole 641 to prevent multiple steel balls from being blocked in the first discharge hole 641; the end of the push rod 621 is set to a second conical surface 622, which provides downward thrust to the steel balls through the second conical surface 622.

[0035] Reference Figure 3As shown, the hopper 6a also includes a discharge mechanism, which is arranged below the accommodating chamber 642. The discharge mechanism includes a fixed plate, a staggered plate 61a, and a fourth cylinder 61 for pushing the staggered plate 61a to move, wherein a chute 65c is provided in the fixed plate, the chute 65c is matched with the staggered plate 61a, the staggered plate 61a is located in the chute 65c, and the fixed plate is provided with a non-coaxial second discharge hole 65b and a third discharge hole 64b on the upper and lower sides of the chute 65c, respectively. The second discharge hole 65b is arranged opposite to the first discharge hole 641, and the staggered plate 61a is provided with a fourth The discharge hole 61b is made to face the second discharge hole 65b and the third discharge hole 64b in sequence by moving the offset plate 61a, wherein the fourth discharge hole 61b can only accommodate a steel ball of a specific size. Therefore, only one steel ball enters the fourth discharge hole 61b from the second discharge hole 65b, and is moved by the offset plate 61a to above the third discharge hole 64b and falls into the third discharge hole 64b. At the same time, a magnetic ring sensor is also provided to confirm the number of steel balls in the fourth discharge hole 61b again, ensuring that one steel ball can be automatically delivered to the orifice of the product 52 and pressed into the hole of the product 52 each time.

[0036] Further, as referenced Figure 6 As shown, the fixing plate includes a first fixing plate 65a and a second fixing plate 64a stacked together. The first fixing plate 65a is provided with the sliding groove 65c and the second discharge hole 65b, and the second fixing plate 64a is provided with the third discharge hole 64b.

[0037] Reference Figure 1 As shown, it also includes a PLC-controlled servo positioning mechanism and a fixture 51. The fixture 51 is used to fix the product 52. The servo positioning mechanism is used to accurately drive the fixture 51 to move along the third direction X through five press-fitting stations in sequence. The product 52 completes the sealing of ten process holes in the five press-fitting stations; the third direction X is the horizontal direction.

[0038] Reference Figure 4As shown, the limiting seat 77 is provided with a first limiting block 73 and a second limiting block 76 at intervals along the second direction Z, the through hole 78 is provided between the two first limiting blocks 73 and the second limiting blocks 76, the limiting portion 75 is provided on the two first limiting blocks 73 and the second limiting blocks 76, the first limiting block 73 and the second limiting block 76 are both provided with a contoured groove 74 matching the first pressure rod 11, the end of the contoured groove 74 is the limiting portion 75, the two contoured grooves 74 are both provided opposite to the first pressure rod 11, the first limiting block 73 is used to press down the first pressure rod 11 to brake it, and the second limiting block 76 is used to push up the first pressure rod 11 to brake it, the function of the contoured groove 74 is to avoid the front end of the first pressure rod 11 so that the front end of the first pressure rod 11 can pass through the limiting portion 75 to push the steel ball.

[0039] Reference Figure 5 As shown, it also includes a first steel feeding mechanism 8 connected to the clamp 51, which is arranged corresponding to the first pressing mechanism 1, and the first steel feeding mechanism 8 includes a conveying hose and a feeding seat 83. The feeding seat 83 is provided with three feeding channels 82, and each of the feeding channels 82 is aligned with one of the process holes at one end, and the other end is aligned with the front end of the first pressure rod 11; one end of the conveying hose is connected to the feed port 81 of the feeding channel 82, and the other end is connected to the discharge port 66 below the third discharge hole 64b, and the limiting portion 75 is aligned with and abuts against one end of the feeding channel 82 to support the steel ball to prevent the steel ball from escaping from one end of the feeding channel 82.

[0040] Furthermore, a visual sensor is included, which is used to detect the number of the steel balls in the conveying hose to prevent multiple steel balls from being pressed into the process hole and causing damage to the product 52.

[0041] Reference Figure 1 As shown, it also includes multiple pressing mechanisms for sealing multiple process holes from multiple directions, such as a second pressing mechanism 2, a third pressing mechanism 3, and a fourth pressing mechanism 4. The multiple pressing mechanisms correspond to four pressing stations respectively, and the multiple pressing mechanisms all include a pressing rod and a cylinder for driving the pressing rod to move, and the multiple pressing rods are all aligned with the process holes.

[0042] Furthermore, the first press-fitting mechanism 1 and the multiple press-fitting mechanisms are equipped with pressure sensors and displacement sensors to determine whether the steel ball meets the press-fitting technical standards. The pressure sensor is used to detect the pressing force of the steel ball; the displacement sensor is used to detect the displacement of the steel ball in the process hole.

[0043] Furthermore, in order to facilitate the operator to clearly see the current operating status on site, a status board is also included. The status board is provided with a three-dimensional pattern of the product 52. Position numbers and indicator lights are set at the multiple process holes of the product 52 corresponding to the three-dimensional pattern. The multiple indicator lights are electrically connected to the pressure sensor and the displacement sensor. Under the control of the PLC, the indicator lights will emit different colors according to the detection results of the pressure sensor and the displacement sensor. For example, green light will be emitted if it is qualified, and red light will be emitted if it is unqualified. The first blocked process hole is numbered 1, the second blocked process hole is numbered 2, and so on. This makes it easy for on-site personnel to intuitively observe the current state of the steel ball and quickly find the corresponding position when dealing with abnormalities later.

[0044] Furthermore, the third discharge hole 64b is arranged higher than the process hole so that the steel balls can slide down by their own gravity.

[0045] Reference Figure 2 As shown, in order to improve the discharge efficiency, multiple first conical surfaces 643 are linearly distributed in the silo, and each first conical surface 643 is configured with the ball pushing mechanism and the discharge mechanism.

[0046] Reference Figure 1 As shown, it also includes a second silo 6b, a third silo 6c and a fourth silo 6d, and the plurality of silos respectively accommodate steel balls of at least three diameters.

[0047] Reference Figure 1 As shown, it also includes a machine platform 5, multiple silos, the first pressing mechanism 1, multiple pressing mechanisms, mechanical limiting mechanisms 7, and clamps 51 are all arranged on the machine platform 5, and the servo positioning mechanism is located inside the machine platform.

[0048] The working principle of the special machine for automatically pressing steel balls to seal product process holes in the utility model is:

[0049] After the product 52 is fixed on the fixture 51, the servo positioning mechanism starts to drive the product 52 to pass through the five pressing stations in sequence. Taking the first pressing station as an example, under the controller of the PLC, the servo positioning mechanism stops the product 52 and the fixture 51 accurately at the first pressing station, and the second cylinder drives the limit seat 77 to approach the product 52, and blocks one end of the feeding channel 82 through the limit part 75. Then, the first hopper 6a starts to discharge the material. Only one steel ball is transported to the feeding channel 82 for each pressing. When the steel ball is in place, the first cylinder drives the first pressure rod 11 to extend, and the front end of the first pressure rod 11 passes through the profiling groove 74 to press the steel ball into the first process hole. At the same time, the multi-position cylinder drives the limit seat 77 to rise through the first limit block 73 to push the first pressure rod 11 up and brake it to prevent it from continuing to extend; after the first process hole is blocked, the servo positioning mechanism drives the fixture 51 to move and adjust the second The process hole is aligned with the front end of the first pressure rod 11, and then the first material bin 6a starts to discharge the material. When the steel ball is in place, the multi-position cylinder drives the limit seat 77 to descend and release the limit on the first pressure rod 11. The first pressure rod 11 continues to extend to press the steel ball into the second process hole. At the same time, the limit seat 77 descends and presses the first pressure rod 11 down through the second limit block 76 to brake it. After the second process hole is sealed, the servo positioning mechanism drives the clamp 51 to move and adjust the third process hole to align with the front end of the first pressure rod 11. When the steel ball is in place, the multi-position cylinder drives the limit seat 77 to rise and release the limit on the first pressure rod 11, so that the first pressure rod 11 continues to extend to press the steel ball into the third process hole. Finally, the first cylinder and the second cylinder respectively drive the first pressure rod 11 and the limit seat 77 back to the initial position. In other embodiments, the first pressure rod 11 can be extended and retracted three times to complete the sealing of the three process holes.

[0050] Obviously, the above embodiments are merely examples for clarity of explanation and are not intended to limit the implementation methods. Those skilled in the art will readily appreciate that other variations or modifications based on the above descriptions are possible. It is not necessary and impossible to enumerate all implementation methods here. Obvious variations or modifications arising therefrom remain within the scope of protection of the present invention.

Claims

1. A special machine for automatically pressing steel balls to seal product process holes, characterized in that: include, A first press-fitting mechanism includes a first cylinder and a first press rod extending along a first direction, wherein the first cylinder drives the first press rod to move along the first direction to press the steel ball into the process hole; A mechanical limiting mechanism includes a slide, a second cylinder driving the slide to move along the first direction, a multi-position cylinder and a limit seat arranged on the slide, the multi-position cylinder driving the limit seat to move back and forth along the second direction, wherein the limit seat is provided with a through hole, the first pressure rod passes through the through hole, the limit seat is provided with a convex limiting portion along the first direction, the limiting portion is used to abut the steel ball, and the limit seat presses the first pressure rod from both sides and brakes the first pressure rod in the first direction.

2. A special machine for automatically pressing steel balls to seal product process holes according to claim 1, characterized in that: It also includes a silo, which is provided with a accommodating cavity and a ball pushing mechanism, the accommodating cavity is provided with a first conical surface, the bottom of the first conical surface is provided with a first discharge hole, the ball pushing mechanism includes a push rod and a third cylinder, the end of the push rod is set to the second conical surface, and the third cylinder drives the push rod to extend horizontally into the accommodating cavity so that the second conical surface moves to above the first discharge hole.

3. A special machine for automatically pressing steel balls to seal product process holes according to claim 2, characterized in that: The hopper also includes a discharge mechanism, which is arranged below the accommodating cavity, and the discharge mechanism includes a fixed plate, a staggered plate, and a fourth cylinder for pushing the staggered plate to move, wherein a slide groove is provided in the fixed plate, and the slide groove is conformally matched with the staggered plate, and the staggered plate is located in the slide groove, and the fixed plate is respectively provided with a non-coaxial second discharge hole and a third discharge hole on the upper and lower sides of the slide groove, and the second discharge hole is arranged opposite to the first discharge hole, and the staggered plate is provided with a fourth discharge hole, and the staggered plate is moved so that the fourth discharge hole is sequentially opposite to the second discharge hole and the third discharge hole, wherein the fourth discharge hole can only accommodate one steel ball.

4. A special machine for automatically pressing steel balls to seal product process holes according to claim 3, characterized in that: It also includes a servo positioning mechanism and a clamp, wherein the servo positioning mechanism is used to drive the clamp to move along the third direction and pass through multiple pressing stations in sequence.

5. A special machine for automatically pressing steel balls to seal product process holes according to claim 4, characterized in that: The limit seat is provided with two limit blocks spaced apart along the second direction, the through hole is provided between the two limit blocks, the limit portion is provided on the two limit blocks, and both limit blocks are provided with a contoured groove, which is provided opposite to the first pressure rod.

6. The special machine for automatically pressing steel balls to seal product process holes according to claim 4, characterized in that: It also includes a first steel feeding mechanism connected to the clamp, which is arranged corresponding to the first pressing mechanism. The first steel feeding mechanism includes a conveying hose and a feeding seat. The feeding seat is provided with multiple feeding channels. One end of each feeding channel is aligned with the process hole, and the other end is aligned with the front end of the first pressure rod; one end of the conveying hose is connected to the feeding channel, and the other end is connected to the third discharge hole.

7. A special machine for automatically pressing steel balls to seal product process holes according to claim 6, characterized in that: It also includes a visual sensor, which is used to detect the number of the steel balls in the delivery hose.

8. The special machine for automatically pressing steel balls to seal product process holes according to claim 4, characterized in that: It also includes multiple pressing mechanisms, which are respectively arranged corresponding to multiple pressing stations. The multiple pressing mechanisms each include a pressing rod and a cylinder driving the pressing rod to move, and the multiple pressing rods are all aligned with the process holes.

9. A special machine for automatically pressing steel balls to seal product process holes according to claim 8, characterized in that: The first press-fitting mechanism and the plurality of press-fitting mechanisms are all equipped with a pressure sensor and a displacement sensor. The pressure sensor is used to detect the pressing force of the steel ball; and the displacement sensor is used to detect the displacement of the steel ball in the process hole.

10. A special machine for automatically pressing steel balls to seal product process holes according to claim 9, characterized in that: It also includes a status board, which is provided with a three-dimensional pattern of the product, and position numbers and indicator lights are set at the multiple process holes in the three-dimensional pattern. The multiple indicator lights are electrically connected to the pressure sensor and the displacement sensor.