Automatic positioning suction cup device

Abstract

The utility model relates to the technical field of vacuum adsorption, in particular to an automatic positioning suction cup device. The automatic positioning suction cup device comprises a mounting block. The air inlet piece is arranged on the mounting block, and the air inlet piece is used for being communicated with external suction equipment; the adsorption assembly is movably arranged on the mounting block, the adsorption assembly communicates with the air inlet piece, and the adsorption assembly is used for stretching into a sunken position in the special-shaped workpiece to adsorb the special-shaped workpiece; and the positioning assembly is detachably arranged on the adsorption assembly, and the positioning assembly is used for abutting against the outer end face of the special-shaped workpiece so as to position the special-shaped workpiece. The positioning assembly can abut against the outer end face of the special-shaped workpiece, the positioning assembly and the special-shaped workpiece are matched to achieve positioning, the structure of the positioning assembly can change along with the appearance change of the special-shaped workpiece, the application range is wider, the automatic positioning function is achieved while adsorption is conducted, accurate positioning is conducted before adsorption, and the stability of the adsorption process is guaranteed.

Description

Technical Field

[0001] The utility model relates to the technical field of vacuum adsorption, in particular to an automatic positioning sucker device. Background Art

[0002] With the continuous development of new energy vehicles, various new types of parts are constantly emerging in order to adapt to the assembly of the internal structure of new energy vehicles. For example, the air-conditioning solenoid valve body can be used to adjust the cooling and heating of central air-conditioning and is a key component of new energy vehicles.

[0003] As the degree of automation in the processing and production equipment of solenoid valve bodies becomes higher and higher, vacuum suction cup devices are often used to transport solenoid valve bodies. However, existing vacuum suction cup devices are usually only suitable for adsorption and transportation of solenoid valve bodies with flat surfaces. When facing solenoid valve bodies with conical surfaces or other complex shapes on the top, existing vacuum suction cup devices are often not convenient for adsorption and transportation.

[0004] Furthermore, during the machining of solenoid valve blanks, not only is the processing space extremely limited, but the vacuum suction system also requires a certain clamping and positioning function to ensure more precise suction and handling of the solenoid valve body. However, the vacuum suction cup devices currently available on the market only have a handling function and lack precise positioning capabilities. This requires the addition of a positioning device to the production line to achieve precise positioning, which is a relatively complex structure. Utility Model Content

[0005] The purpose of the utility model is to provide an automatic positioning suction cup device, aiming to solve the technical problems that the existing suction cup device is not suitable for adsorbing special-shaped workpieces and does not have a precise positioning function.

[0006] To achieve the above-mentioned purpose, the utility model provides an automatic positioning suction cup device, comprising a mounting block;

[0007] an air inlet member, which is provided on the mounting block and is used to communicate with an external suction device;

[0008] An adsorption assembly is movably arranged on the mounting block, the adsorption assembly is in communication with the air inlet member, and the adsorption assembly is used to extend into a recessed position in the special-shaped workpiece to adsorb the special-shaped workpiece;

[0009] A positioning component is detachably arranged on the adsorption component, and the positioning component is used to press against the outer end surface of the special-shaped workpiece to position the special-shaped workpiece.

[0010] Preferably, it further comprises a sensing component arranged on the mounting block, and the sensing component is used to send a position signal to an external device when detecting that the adsorption component moves up to a preset position.

[0011] Preferably, the adsorption assembly includes a movable rod, the mounting block is provided with a detachable bearing, and the movable rod is movably arranged in the bearing;

[0012] An air intake passage is provided in the movable rod, the air intake passage is communicated with the air intake member, and the end of the movable rod extends into the recessed position of the special-shaped workpiece.

[0013] Preferably, the positioning assembly includes a positioning block, the end of the movable rod passes through the positioning block and extends into the recessed position of the special-shaped workpiece, the outer wall of the movable rod is also sleeved with an elastic member, the elastic member is located between the bearing and the positioning block, and the inner wall of the bottom end of the positioning block is provided with a positioning step that fits the outer end face of the special-shaped workpiece, so that: after the automatic positioning suction cup device moves downward, the positioning step of the positioning block is tightly pressed against the outer end face of the special-shaped workpiece to achieve positioning, and then the adsorption assembly adsorbs the special-shaped workpiece.

[0014] Preferably, a sealing ring is provided on the outer wall of the end of the movable rod, and the sealing ring is used to press against the top of the recessed part of the special-shaped workpiece to keep the recessed part in a sealed state.

[0015] Preferably, the sensing assembly includes a connecting rod, a proximity switch and a trigger member, the proximity switch is detachably arranged on the mounting block through the connecting rod, the top of the mounting block is provided with a movable cavity, the sensing end of the proximity switch extends into the movable cavity, the top of the movable rod is provided with the trigger member, the upper end of the bearing is used to limit the trigger member, so that: after the positioning block is pressed against the special-shaped workpiece, the elastic member is squeezed, the movable rod drives the trigger member to move upward into the movable cavity, and the proximity switch senses the trigger member.

[0016] Preferably, an accommodating cavity is provided in the bearing, a plurality of balls are provided in the accommodating cavity, and the plurality of balls are in contact with the outer wall of the movable rod respectively.

[0017] Preferably, the positioning step includes a first positioning wall and a second positioning wall connected in sequence, the first positioning wall extends horizontally, and the end of the first positioning wall extends downwardly and obliquely to form the second positioning wall.

[0018] Preferably, a buffer pad is provided between the trigger member and the bearing.

[0019] Preferably, at least one locking assembly is provided on the positioning block, and the locking assembly includes a locking rod and a pad. The locking rod is used to pass through the positioning block and press against the outer wall of the movable rod. The pad is provided at the end of the locking rod.

[0020] Preferably, a connecting assembly is further provided on the mounting block, and the connecting assembly includes a screw and an elastic washer. The screw connects the bearing and the mounting block in sequence, and the elastic washer is provided between the screw and the bearing.

[0021] The utility model discloses an automatic positioning suction cup device, which has the following beneficial effects:

[0022] 1. The adsorption component of this solution can be extended into the recessed position in the special-shaped workpiece and then adsorb the special-shaped workpiece. Before adsorption, the positioning component is used to position the special-shaped workpiece. The positioning component can be pressed against the outer end surface of the special-shaped workpiece, and the two fit together to achieve positioning. The structure of the positioning component can change with the shape of the special-shaped workpiece, and the scope of application is wider. It also has an automatic positioning function during adsorption, and precise positioning before adsorption ensures the stability of the adsorption process.

[0023] 2. The mounting block is provided with a sensing component. When the positioning block completes positioning, the movable rod will be squeezed upward by the elastic member. When the movable rod and the trigger member move up to the preset position, the proximity switch transmits a position signal to an external controller and other equipment, so that the controller receives the position signal, thereby preventing the device from being unable to feedback the positioning action signal after the external controller sends a positioning position signal.

[0024] 3. The automatic positioning suction cup device of this solution can be used to achieve high-pressure blowing and can also be used for vacuum adsorption loading and unloading. BRIEF DESCRIPTION OF THE DRAWINGS

[0025] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the following briefly introduces the drawings required for use in the embodiments or the description of the prior art. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on the structures shown in these drawings without paying any creative work.

[0026] Figure 1 This is a schematic structural diagram of the automatic positioning suction cup device of the utility model;

[0027] Figure 2 This is a structural diagram of the automatic positioning suction cup device of the utility model from another angle;

[0028] Figure 3 This is a schematic diagram of the structure of the automatic positioning suction cup device of the utility model when it absorbs a special-shaped workpiece;

[0029] Figure 4 This is a schematic diagram of the cross-sectional structure of the automatic positioning suction cup device and the special-shaped workpiece of the utility model;

[0030] Figure 5 for Figure 4 A partial enlarged view of point A in the middle.

[0031] In the accompanying drawings: 1-mounting block, 11-bearing, 111-ball, 12-movable cavity, 2-air inlet, 3-adsorption assembly, 31-movable rod, 311-air inlet channel, 312-sealing ring, 32-elastic member, 4-special-shaped workpiece, 41-recessed position, 42-outer end face, 421-top surface, 422-inclined surface, 5-positioning assembly, 51-positioning block, 5111-positioning step, 5111-first positioning wall, 5112-second positioning wall, 52-locking assembly, 521-locking rod, 522-pad, 6-sensing assembly, 61-connecting rod, 62-proximity switch, 63-trigger, 631-buffer pad, 7-connecting assembly, 71-screw, 72-elastic washer.

[0032] The realization of the purpose, functional features and advantages of the present invention will be further explained in conjunction with embodiments and with reference to the accompanying drawings. DETAILED DESCRIPTION

[0033] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the embodiments described are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0034] It should be noted that if directional indications are involved in the embodiments of the present invention, the directional indications are only used to explain the relative positional relationship, movement status, etc. between the components in a certain specific posture. If the specific posture changes, the directional indications will also change accordingly.

[0035] In addition, if there are descriptions involving "first", "second", etc. in the embodiments of the present invention, the descriptions of "first", "second", etc. are only for descriptive purposes and cannot be understood as indicating or implying their relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features specified as "first" or "second" may explicitly or implicitly include at least one of such features. In addition, the technical solutions between the various embodiments can be combined with each other, but this must be based on the fact that ordinary technicians in this field can implement them. When the combination of technical solutions is contradictory or cannot be implemented, it should be deemed that such a combination of technical solutions does not exist and is not within the scope of protection required by the present invention.

[0036] like Figures 1 to 5 As shown, an automatic positioning suction cup device includes a mounting block 1;

[0037] An air inlet member 2 is provided on the mounting block 1 and is used to communicate with an external suction device (not shown in the figure, such as a vacuum generator);

[0038] An adsorption assembly 3 is movably disposed on the mounting block 1 , the adsorption assembly 3 being in communication with the air inlet member 2 , and configured to extend into a recessed position 41 within the irregularly shaped workpiece 4 to adsorb the irregularly shaped workpiece;

[0039] The positioning assembly 5 is detachably provided on the adsorption assembly 3 , and the positioning assembly 5 is used to press against the outer end surface 42 of the special-shaped workpiece 4 to position the special-shaped workpiece.

[0040] The automatic positioning sucker device of this solution is particularly suitable for the adsorption of special-shaped workpieces 4 such as solenoid valve bodies. Of course, it is also suitable for the adsorption and positioning of other special-shaped workpieces 4 with recessed positions 41.

[0041] Specifically, the automatic positioning suction cup device of the present invention includes a mounting block 1, an air inlet part 2 is provided on the mounting block 1 (a gas quick connector 3 can be used during actual installation), and an adsorption component 3 is also provided on the mounting block 1. The adsorption component 3 and the air inlet part 2 are interconnected. Unlike the traditional suction cup device, the adsorption component 3 of the present invention extends into the recessed position 41 in the special-shaped workpiece 4, and then the special-shaped workpiece 4 is adsorbed by the vacuum generator, and the special-shaped workpiece 4 is positioned by the positioning component 5 before adsorption. The positioning component 5 (the positioning step 511) can be pressed against the outer end face 42 of the special-shaped workpiece 4, and the two fit each other. The structure of the positioning component 5 can change with the shape of the special-shaped workpiece 4, and the scope of application is wider. It also has an automatic positioning function while adsorbing, and precise positioning before adsorption to ensure the stability of the adsorption process.

[0042] Furthermore, it also includes a sensing component 6 arranged on the mounting block 1, and the sensing component 6 is used to send a positioning signal to an external device when it detects that the adsorption component 3 moves to a preset position.

[0043] The mounting block 1 is provided with a sensing component 6. When the positioning component 5 completes positioning, the movable component will be squeezed and moved upward. When it moves upward to the preset position, the sensing component 6 transmits a positioning signal to an external controller or other device, so that the controller receives the positioning signal, thereby preventing the device from being unable to feedback the positioning action signal after the external controller sends a positioning position signal.

[0044] Furthermore, the adsorption assembly 3 includes a movable rod 31, and a detachable bearing 11 is provided on the mounting block 1, and the movable rod 31 is movably arranged in the bearing 11;

[0045] An air intake passage 311 is provided in the movable rod 31 . The air intake passage 311 is communicated with the air intake member 2 . The distal end of the movable rod 31 extends into the recessed portion 41 of the special-shaped workpiece 4 .

[0046] The adsorption assembly 3 mainly includes a movable rod 31, which can move up and down along the bearing 11 on the mounting block 1. After the gas enters from the air inlet part 2, it passes through the air inlet channel 311 passing through the movable rod 31 to achieve adsorption of the special-shaped workpiece 4.

[0047] Furthermore, the positioning assembly 5 includes a positioning block 51, and the end of the movable rod 31 passes through the positioning block 51 and extends into the recessed position 41 of the special-shaped workpiece 4. The outer wall of the movable rod 31 is also sleeved with an elastic member 32, and the elastic member 32 is located between the bearing 11 and the positioning block 51. The inner wall of the bottom end of the positioning block 51 is provided with a positioning step 511 that fits with the outer end face 42 of the special-shaped workpiece 4, so that: after the automatic positioning suction cup device moves downward, the positioning step 511 of the positioning block 51 is tightly pressed against the outer end face 42 of the special-shaped workpiece 4 to achieve positioning, and then the adsorption assembly 3 adsorbs the special-shaped workpiece 4.

[0048] like Figures 3 and 4 As shown, in this embodiment, the bottom of the movable rod 31 is provided with an external thread that is threadedly connected to the positioning block 51, and the elastic member 32 is assembled on the outer wall of the movable rod 31. The top end of the elastic member 32 is in close contact with the linear bearing 11, and the bottom end of the elastic member 32 is in close contact with the positioning block 51, and is compressed or stretched when the movable rod 31 moves up and down. The inner wall of the bottom end of the positioning block 51 is provided with a positioning step 511, and the positioning step 511 is matched with the outer end face 42 of the special-shaped workpiece 4 (the outer end face 42 in this solution includes the top face 421 and the side face at the corner of the special-shaped workpiece 4). After the positioning step 511 is in close contact with the outer end face 42 of the special-shaped workpiece 4, the positioning of the special-shaped workpiece 4 is completed, and then the special-shaped workpiece 4 is adsorbed and transported by the adsorption component 3. The elastic member in this solution is preferably a spring.

[0049] Furthermore, a sealing ring 312 is provided on the outer wall of the end of the movable rod 31 , and the sealing ring 312 is used to press against the top of the recessed position 41 of the special-shaped workpiece 4 to keep the recessed position 41 in a sealed state.

[0050] Furthermore, the sensing component 6 includes a connecting rod 61, a proximity switch 62 and a trigger member 63. The proximity switch 62 is detachably arranged on the mounting block 1 through the connecting rod 61. The top of the mounting block 1 is provided with an active cavity 12. The sensing end of the proximity switch 62 extends into the active cavity 12. The top of the movable rod 31 is provided with the trigger member 63. The upper end of the bearing 11 is used to limit the trigger member 63, so that: after the positioning block 51 is pressed against the special-shaped workpiece 4, the elastic member 32 is squeezed, and the movable rod 31 drives the trigger member 63 to move up into the active cavity 12, and the proximity switch 62 senses the trigger member 63.

[0051] In this embodiment, the proximity switch 62 is laterally secured to the mounting block 1 via a connecting rod 61 (which may be a hexagon socket screw 71 during actual installation). A washer may be positioned between the top of the connecting rod 61 and the mounting block 1. The distal end of the proximity switch 62 extends into the movable cavity 12 of the mounting block 1. The proximity switch 62 senses a trigger member 63 at the top of the movable rod 31. When the positioning block 51 abuts against the irregularly shaped workpiece 4, positioning is completed. This compresses the elastic member 32, causing the movable rod 31 to move the trigger member 63 upward into the movable cavity 12. The proximity switch 62 senses the trigger member 63 and provides feedback to an external controller or other device indicating positioning is complete (in place).

[0052] Furthermore, the positioning step 511 includes a first positioning wall 5111 and a second positioning wall 5112 connected in sequence. The first positioning wall 5111 extends horizontally, and the end of the first positioning wall 5111 extends downwardly and obliquely to form the second positioning wall 5112.

[0053] The working process of the automatic positioning suction cup device of this scheme is as follows: the automatic positioning suction cup device descends under the drive of the external equipment, and the positioning block 51 descends accordingly. The second positioning wall 5112 plays a guiding role, and automatically corrects and centers the special-shaped workpiece 4 such as the solenoid valve body. After that, the top surface 421 of the special-shaped workpiece 4 is tightly fitted with the first positioning wall 5111 of the positioning block 51. After the elastic member 32 is compressed, the trigger member 63 approaches and reaches the sensing range of the proximity switch 62. The proximity switch 62 then transmits the in-position signal to the external controller and other equipment, so that it receives the in-position signal of "the top surface 421 of the special-shaped workpiece 4 is tightly positioned with the positioning block 51", so as to avoid the device being unable to feedback the positioning action signal after the external controller sends the positioning position signal.

[0054] Specifically, according to Figure 3 Figure 5As shown, before the automatic positioning suction cup device performs negative pressure vacuum adsorption, the automatic positioning suction cup device is first moved to the vicinity above the special-shaped workpiece 4 by an external mobile device, and the suction equipment converts the exhausted gas into high-pressure gas through the gas electromagnetic reversing valve, that is, high-pressure gas is introduced into the air inlet part 2 (which can be a gas quick connector), and the high-pressure gas is blown toward the concave position of the special-shaped workpiece 4 through the air inlet channel 311 of the movable rod 31 to remove dust on the surface of the special-shaped workpiece 4.

[0055] After the high-pressure blowing is completed, the automatic positioning suction cup device performs the negative pressure vacuum adsorption action process, and the external moving device drives the automatic positioning suction cup device to descend. First, the second positioning wall 5112 of the positioning block 51 guides the inclined surface 422 of the special-shaped workpiece 4 to contact and continue to descend (at this time, the elastic member 32 is continuously compressed), so that the special-shaped workpiece 4 is automatically positioned and centered until the inclined surface 422 of the special-shaped workpiece 4 is fully matched and tightly fitted with the second positioning wall 5112 of the positioning block 51, and the top surface 421 of the special-shaped workpiece 4 is fully matched and tightly fitted with the first positioning wall 5111 of the positioning block 51. At this time, the sealing ring 312 at the end of the movable rod 31 is compressed and tightly fitted to the top of the recessed position 41 of the special-shaped workpiece 4, so that a closed space is formed inside the recessed position 41, and the suction equipment is converted into a vacuum generator through the gas electromagnetic reversing valve, generating a negative pressure airflow to form a negative pressure space in the recessed position 41 of the special-shaped workpiece 4, and finally the automatic positioning suction cup device completes the negative pressure vacuum adsorption action. That is, the automatic positioning suction cup device of this solution can be used to achieve high-pressure blowing and can also be used for vacuum adsorption loading and unloading.

[0056] In other embodiments, the outer end surface 42 of the special-shaped workpiece 4 may also be The shape of the corresponding positioning step 511 changes accordingly.

[0057] Furthermore, an accommodating cavity 111 is provided in the bearing 11 , and a plurality of balls 112 are provided in the accommodating cavity 111 . The plurality of balls 112 are in contact with the outer wall of the movable rod 31 respectively.

[0058] In this embodiment, a rolling mechanism is used to assist the up-and-down movement between the mating bearing 11 and the movable rod 31. A plurality of vertically arranged rigid balls 112 are provided in a receiving cavity 111 within the bearing 11. These balls 112 contact the movable rod 31 as it moves up and down, preventing the movable rod 31 from swinging excessively left and right during movement, reducing vibration, and improving the concentricity accuracy of the automatic positioning suction cup device.

[0059] Furthermore, a buffer pad 631 is provided between the trigger member 63 and the bearing 11. The buffer pad 631 is positioned between the trigger member 63 and the bearing 11 and is mounted on the outer wall of the movable rod 31. As the trigger member 63 continuously moves up and down with the movable rod 31, it will repeatedly collide with the top of the bearing 11. The buffer pad 631 provides protection and cushioning during the up and down movement of the movable rod 31 and the trigger member 63, preventing damage to the trigger member 63 and the bearing 11 from prolonged collision. The buffer pad 631 in this embodiment can be made of a plastic material such as rubber.

[0060] The trigger member 63 can be a nut during actual installation, and is fixed to the movable rod by a hexagon socket flat-end tightening screw.

[0061] Furthermore, at least one locking assembly 52 is provided on the positioning block 51, and the locking assembly 52 includes a locking rod 521 and a pad 522. The locking rod 521 is used to pass through the positioning block 51 and press against the outer wall of the movable rod 31. The pad 522 is provided at the end of the locking rod 521.

[0062] like Figure 4 As shown, in order to ensure a more stable connection between the positioning block 51 and the movable rod 31, this solution is additionally provided with a locking assembly 52 to lock the two. During installation, two sets of locking assemblies 52 can be provided on both sides of the positioning block 51. Of course, in other embodiments, this can be adjusted to one or three sets. The locking assembly 52 includes a locking rod 521 (which can be a screw during actual installation) and a spacer 522. The locking rods 521 on both sides respectively pass through the positioning block 51 horizontally to press against the outer wall of the movable rod 31. The spacer 522 of this solution can be made of copper blocks. The copper block is a tough, soft metal with a lower hardness than the movable rod 31, which can prevent the locking rod 521 from damaging the threads of the outer wall of the movable rod 31 in the positioning block 51.

[0063] Furthermore, a connecting assembly 7 is provided on the mounting block 1 , and the connecting assembly 7 includes a screw 71 and an elastic washer 72 . The screw connects the bearing 11 and the mounting block 1 in sequence, and the elastic washer 72 is provided between the screw 71 and the bearing 11 .

[0064] In this embodiment, a connecting component 7 is used to fix the bearing 11 and the mounting block 1, wherein the screw of the connecting component 7 (which can be a hexagon socket screw 71 during actual installation) is threadedly connected to the bearing 11 and the mounting block 1, which is convenient for installation and disassembly and can ensure that the connection between the two is relatively stable. The elastic washer 72 can prevent the screw from loosening due to vibration during operation of the device, and can also separate the bearing 11 and the screw head to avoid scratches.

[0065] In addition to fixing the bearing 11 and the mounting block 1, the connecting component 7 can also be directly used to fix the mounting block 1 and other external devices, so that the automatic positioning suction cup device of this solution can be installed on other mobile devices.

[0066] The above description is only a preferred embodiment of the present invention and does not limit the patent scope of the present invention. All equivalent structural transformations made by using the contents of the present invention specification and drawings under the inventive concept of the present invention, or direct / indirect application in other related technical fields are included in the patent protection scope of the present invention.

Claims

1. An automatic positioning suction cup device, characterized in that: include: Mounting block (1); An air inlet member (2) is provided on the mounting block (1), and the air inlet member (2) is used to communicate with an external suction device; An adsorption assembly (3) is movably arranged on the mounting block (1), the adsorption assembly (3) is connected to the air inlet member (2), and the adsorption assembly (3) is used to extend into a recessed position (41) in the special-shaped workpiece (4) to adsorb the special-shaped workpiece; A positioning component (5) is detachably arranged on the adsorption component (3), and the positioning component (5) is used to press against the outer end surface (42) of the special-shaped workpiece (4) to position the special-shaped workpiece.

2. The automatic positioning suction cup device according to claim 1, characterized in that: It also includes a sensing component (6) arranged on the mounting block (1), and the sensing component (6) is used to send a position signal to an external device when detecting that the adsorption component (3) moves to a preset position.

3. The automatic positioning suction cup device according to claim 2, characterized in that: The adsorption assembly (3) includes a movable rod (31), a detachable bearing (11) is provided on the mounting block (1), and the movable rod (31) is movably arranged in the bearing (11); A through air intake channel (311) is provided in the movable rod (31), the air intake channel (311) is connected to the air intake member (2), and the end of the movable rod (31) extends into the recessed position (41) of the special-shaped workpiece (4).

4. The automatic positioning suction cup device according to claim 3, characterized in that: The positioning assembly (5) includes a positioning block (51), the end of the movable rod (31) passes through the positioning block (51) and extends into the recessed position (41) of the special-shaped workpiece (4), the outer wall of the movable rod (31) is also sleeved with an elastic member (32), and the elastic member (32) is located between the bearing (11) and the positioning block (51), and the inner wall of the bottom end of the positioning block (51) is provided with a positioning step (511) that matches the outer end surface (42) of the special-shaped workpiece (4), so that: after the automatic positioning suction cup device moves downward, the positioning step (511) of the positioning block (51) is pressed against the outer end surface (42) of the special-shaped workpiece (4) to achieve positioning, and then the adsorption assembly (3) adsorbs the special-shaped workpiece (4).

5. An automatic positioning suction cup device according to claim 3 or 4, characterized in that: The outer wall of the end of the movable rod (31) is provided with a sealing ring (312), and the sealing ring (312) is used to press against the top of the recessed part (41) of the special-shaped workpiece (4) to keep the recessed part (41) in a sealed state.

6. The automatic positioning suction cup device according to claim 4, characterized in that: The sensing assembly (6) includes a connecting rod (61), a proximity switch (62) and a trigger member (63). The proximity switch (62) is detachably mounted on the mounting block (1) via the connecting rod (61). The top of the mounting block (1) is provided with an active cavity (12). The sensing end of the proximity switch (62) extends into the active cavity (12). The top of the active rod (31) is provided with the trigger member (63). The upper end of the bearing (11) is used to limit the trigger member (63), so that: after the positioning block (51) is pressed against the special-shaped workpiece (4), the elastic member (32) is squeezed, the active rod (31) drives the trigger member (63) to move upward into the active cavity (12), and the proximity switch (62) senses the trigger member (63).

7. The automatic positioning suction cup device according to claim 3, characterized in that: An accommodating cavity (111) is provided in the bearing (11), and a plurality of balls (112) are provided in the accommodating cavity (111). The plurality of balls (112) are in contact with the outer wall of the movable rod (31) respectively.

8. The automatic positioning suction cup device according to claim 4, characterized in that: The positioning step (511) includes a first positioning wall (5111) and a second positioning wall (5112) connected in sequence, the first positioning wall (5111) extends horizontally, and the end of the first positioning wall (5111) extends downwardly and obliquely to form the second positioning wall (5112).

9. The automatic positioning suction cup device according to claim 6, characterized in that: A buffer pad (631) is provided between the trigger member (63) and the bearing (11).

10. The automatic positioning suction cup device according to claim 4, characterized in that: The positioning block (51) is further provided with at least one locking assembly (52), the locking assembly (52) comprising a locking rod (521) and a cushion block (522), the locking rod (521) being used to pass through the positioning block (51) and press against the outer wall of the movable rod (31), and the cushion block (522) being provided at the end of the locking rod (521).

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