Flexible Assembly and Assembly Stagnation Detection Mechanism for Porcelain Core Shaft Hole Parts Used in Initiating Explosive Devices

Abstract

This application relates to the field of mechanical assembly, and specifically discloses an assembly mechanism, including: a mounting bushing; an elastic lifting shaft disposed in the cavity of the mounting bushing; a suction head disposed at one end of the elastic lifting shaft away from the mounting bushing for adsorbing products; during the process of product assembly, under the action of the sticking force of the product, the elastic lifting shaft can move along the assembly axis in the cavity; a detection sensor and a detection sweeping piece are respectively disposed on the same side of the mounting bushing and the elastic lifting shaft, and the detection sensor and the detection sweeping piece are oppositely arranged for detecting the relative movement of the mounting bushing and the elastic lifting shaft, and the relative movement condition is used to indicate the assembly sticking condition of the product. The assembly mechanism provided by this application has a displacement anti-sticking detection function and a quick-change function.

Description

Technical Field

[0001] This application relates to the technical field of mechanical assembly, in particular to a flexible assembly and assembly jamming detection mechanism for ceramic core shaft hole parts used in initiators. Background Art

[0002] In scenarios where the assembly gap accuracy is very high, such as the assembly scenario of ceramic core parts of initiators, the assembly gap is as high as 0.01 mm, and good alignment needs to be ensured. During the assembly process, it is not allowed to jam when loading, to avoid scraping the inner wall of the hole caused by jamming. At present, in order to ensure product quality, the assembly of such parts is mainly carried out manually. However, manual assembly can no longer meet the growing production demand, and automatic assembly and other shaft hole assembly mechanisms are also difficult to meet the assembly requirements of ceramic core shaft hole parts. If a flexible assembly mechanism can be designed, which can effectively ensure the correct loading of the product and at the same time effectively identify the jamming situation, it is a technical problem to be solved. Summary of the Invention

[0003] This application provides a flexible assembly and assembly jamming detection mechanism, aiming to overcome the deficiencies of the prior art and provide a flexible assembly mechanism with a displacement anti-jamming detection structure and a quick-change structure.

[0004] In a first aspect, an assembly mechanism is provided, including:

[0005] A mounting bushing having a cavity;

[0006] An elastic lifting shaft disposed in the cavity of the mounting bushing;

[0007] A suction head disposed at one end of the elastic lifting shaft away from the mounting bushing for adsorbing the product;

[0008] During the assembly of the product, under the action of the jamming force of the product, the elastic lifting shaft can move along the assembly axis in the cavity;

[0009] A detection sensor and a detection sweep are respectively disposed on the same side of the mounting bushing and the elastic lifting shaft, and the detection sensor and the detection sweep are oppositely disposed to detect the relative movement of the mounting bushing and the elastic lifting shaft, and the relative movement condition is used to indicate the assembly jamming condition of the product.

[0010] Based on the prior art, the mechanism of the present invention optimizes and adds a detection sweep and a detection sensor, and can identify jamming during the assembly process under different assembly pressures.

[0011] In combination with the first aspect, in some implementation manners of the first aspect, the assembly mechanism further includes:

[0012] The air extraction component includes a connecting sleeve, which is fixedly connected to the mounting shaft sleeve. One side of the connecting sleeve facing the mounting shaft sleeve has a limit mounting groove;

[0013] The limit block is fixedly connected to the elastic lifting shaft and is arranged in the limit mounting groove;

[0014] The first spring abuts between the limit block and the bottom of the limit mounting groove.

[0015] Thus, the elastic lifting shaft can elastically move within the cavity of the mounting shaft sleeve, effectively avoiding product damage and enabling the assembly of shaft-hole parts to be completed with a small assembly force.

[0016] Combined with the first aspect, in some implementation manners of the first aspect, the bottom of the limit mounting groove has a bottom through hole, and the air extraction component is used to extract air through the bottom through hole; the elastic lifting shaft has a lifting shaft ventilation hole; the assembly mechanism further includes:

[0017] The trachea joint is installed on the limit block. The trachea joint penetrates between the bottom through hole and the lifting shaft ventilation hole. The trachea joint is arranged opposite to the bottom through hole and can move within the bottom through hole under the action of the limit block.

[0018] Thus, when the elastic lifting shaft moves upward under the action of the jamming force, the trachea joint can extend into the bottom through hole, thus not affecting the passage of gas within the assembly mechanism.

[0019] Combined with the first aspect, in some implementation manners of the first aspect, the limit block has a trachea counterbore. The trachea joint and the first spring sleeve are arranged within the trachea counterbore, and the first spring is wound around the outer periphery of the trachea joint.

[0020] The trachea counterbore can be used to limit the outer periphery of the spring, which is beneficial to reducing the possibility of the spring bending, reducing the displacement amount of the spring deviating from the assembly axis of the product, and enabling the elastic lifting shaft to elastically move along the assembly axis of the product. Additionally, the spring will not occupy the moving stroke of the limit block along the assembly axis of the product within the limit mounting groove.

[0021] Combined with the first aspect, in some implementation manners of the first aspect, a guide sleeve is arranged within the cavity of the mounting shaft sleeve, and the elastic lifting shaft can move along the assembly axis within the guide sleeve.

[0022] This is beneficial to limiting the deviation amount of the elastic lifting shaft deviating from the assembly axis.

[0023] Combined with the first aspect, in some implementation manners of the first aspect, the elastic lifting shaft has a lifting shaft protruding portion protruding away from the mounting shaft sleeve;

[0024] The suction head includes a suction head body and a suction head step portion, and the suction head step portion extends away from the assembly axis from the suction head body; the assembly mechanism further includes:

[0025] A nut having a nut inner cavity, a first opening of the nut inner cavity is in threaded fit with the protruding portion of the lifting shaft, the suction head body passes through a second opening of the nut inner cavity, and the suction head step portion abuts between the inner wall of the nut inner cavity and the protruding portion of the lifting shaft. The outer diameter of the suction head step portion is smaller than the inner diameter of the first opening and larger than the inner diameter of the second opening.

[0026] Through the design of the nut with a special structure, the fixed connection between the elastic lifting shaft and the suction head can be realized, and it can also have a quick change function, and can be compatible with the assembly of products with different size specifications at the same time.

[0027] Combined with the first aspect, in some implementation manners of the first aspect, the protruding portion of the lifting shaft has a suction head mounting groove, the suction head further includes a suction head protruding portion protruding toward the mounting shaft sleeve, and the suction head protruding portion is snap-fitted with the suction head mounting groove.

[0028] This is beneficial to improving the installation and docking accuracy between the suction head and the elastic lifting shaft.

[0029] Combined with the first aspect, in some implementation manners of the first aspect, the assembly mechanism further includes:

[0030] A positioning pin passing through the suction head for mating with the central hole of the product;

[0031] A positioning pin pressing block and a second spring are accommodated in the suction head mounting groove. The positioning pin pressing block is arranged between the second spring and the positioning pin, and the second spring abuts between the positioning pin pressing block and the elastic lifting shaft.

[0032] On the one hand, it improves the positioning accuracy of the product. On the other hand, the suction head has a flexible structure, which can effectively avoid product damage and can complete the assembly of shaft-hole parts with a relatively small assembly force.

[0033] Combined with the first aspect, in some implementation manners of the first aspect, the elastic lifting shaft has a lifting shaft ventilation hole, and the air extraction component is used to extract air through the lifting shaft ventilation hole; the suction head mounting groove is communicated with the lifting shaft ventilation hole, and the suction head has a suction head ventilation hole penetrating between the suction head mounting groove and the adsorption end face, and the adsorption end face is the end face of the suction head for adsorbing the product.

[0034] Thus, a strong adsorption of the product is realized.

[0035] In combination with the first aspect, in certain implementations of the first aspect, the gap between the suction head and the positioning pin is smaller than the gap between the positioning pin pressing block and the suction head mounting groove.

[0036] There can be a relatively large gap or space between the positioning pin pressing block and the suction head mounting groove of the elastic lifting shaft, so that smooth gas flow can be achieved between the lifting shaft vent holes on both sides of the suction head mounting groove and the suction head vent holes of the suction head, realizing the product vacuum adsorption cavity passage. When the suction head adsorbs the product through the suction head vent holes, the positioning pin blocks the central through hole of the suction head to a certain extent, thereby reducing air leakage and improving the adsorption stability of the suction head to the product. BRIEF DESCRIPTION OF THE DRAWINGS

[0037] Figure 1 FIG. is a schematic structural diagram of a flexible assembly mechanism provided by an embodiment of the present application.

[0038] Figure 2 FIG. is a schematic structural diagram of a shaft-hole assembly suction head provided by an embodiment of the present application.

[0039] Figure 3 is Figure 2 the A-A cross-sectional view of the shaft-hole assembly suction head shown.

[0040] Figure 4 is Figure 3 a partial enlarged view of the cross-sectional view shown.

[0041] Figure 5 is Figure 3 another partial enlarged view of the cross-sectional view shown.

[0042] Figure 6 is Figure 3 yet another partial enlarged view of the cross-sectional view shown. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0043] The present application will be further described in detail below with reference to the accompanying drawings and specific embodiments.

[0044] Figure 1 FIG. is a schematic structural diagram of a flexible assembly mechanism provided by an embodiment of the present application. Figure 1 The flexible assembly mechanism shown can be applied to shaft-hole assembly scenarios. The flexible assembly mechanism can include a shaft-hole assembly suction head 1 and an air extraction component 2. The air extraction component 2 is used to extract gas. Figure 2 FIG. is a schematic structural diagram of a shaft-hole assembly suction head provided by an embodiment of the present application. Figure 3 is Figure 2 the A-A cross-sectional view of the shaft-hole assembly suction head shown. Figure 4 is Figure 3 a partial enlarged view of the cross-sectional view shown. Additionally, Figure 4The assembly of the product 3 and the housing 4 is also shown.

[0045] The shaft-hole assembled suction head 1 is mounted on the air extraction component 2 through a shaft-hole fit. The shaft-hole assembled suction head 1 and the air extraction component 2 are fixed, for example, by means of screw fastening. Specifically, with reference to Figures 1 to 4 , the upper flange structure of the mounting bushing 17 of the shaft-hole assembled suction head 1 and the lower flange structure of the connecting sleeve 18 of the air extraction component 2 can be positioned by steps and fixed with screws. The shaft-hole assembled suction head 1 and the air extraction component 2 cooperate with each other to achieve the assembly of the product 3 and the housing 4.

[0046] The shaft-hole assembled suction head 1 includes a mounting bushing 17 and an elastic lifting shaft 15. The mounting bushing 17 and the elastic lifting shaft 15 can be arranged on the assembly axis of the product 3. The elastic lifting shaft 15 can pass through the inner cavity of the mounting bushing 17 and move along the assembly axis of the product 3 within the inner cavity of the mounting bushing 17.

[0047] As Figure 3 and Figure 5 shown, the mounting bushing 17 can include a guiding mounting groove 171. The guiding mounting groove 171 is arranged on the assembly axis of the product 3 and extends along the assembly axis of the product 3. An opening of the guiding mounting groove 171 can be provided on one side of the mounting bushing 17 close to the connecting sleeve 18. The elastic lifting shaft 15 can be mounted in the guiding mounting groove 171 from the opening and can move along the assembly axis of the product 3 within the guiding mounting groove 171.

[0048] In some embodiments, a guiding sleeve 112 can be arranged in the guiding mounting groove 171. The guiding mounting groove 171 can be a blind groove, and the guiding sleeve 112 can abut against the bottom surface of the guiding mounting groove 171. The elastic lifting shaft 15 can be arranged in the guiding sleeve 112, so that the elastic lifting shaft 15 can move along the assembly axis of the product 3 under the guiding action of the guiding sleeve 112.

[0049] With reference to Figure 3 and Figure 5 shown in the embodiment, one side of the connecting sleeve 18 facing the mounting bushing 17 can have a limiting mounting groove 181. The opening of the limiting mounting groove 181 can face the mounting bushing 17 and is arranged opposite to the guiding mounting groove 171 of the mounting bushing 17. A limiting block 113 can be arranged in the limiting mounting groove 181. The limiting block 113 can be fixedly connected to one end of the elastic lifting shaft 15 close to the connecting sleeve 18.

[0050] The limiting block 113 can move along the assembly axis of the product 3 within the space of the limiting mounting groove 181. The bottom of the limiting mounting groove 181 (such as Figure 5The spring limit step shown (as shown) can be used to limit the moving stroke of the elastic lifting shaft 15 towards the connecting sleeve 18. Additionally, the outer diameter dimension of the limit block 113 is larger than the guiding hole diameter dimension of the guiding sleeve 112, thereby forming a limit step with a flange structure to prevent the elastic lifting shaft 15 from falling out of the guiding sleeve 112, that is, to limit the moving stroke of the elastic lifting shaft 15 away from the connecting sleeve 18. When replacing the elastic lifting shaft 15, the limit block 113 can be removed first, and then the elastic lifting shaft 15 can be taken out from the guiding sleeve 112.

[0051] As Figure 5 shown, an air pipe joint 114 can be arranged in the limit installation groove 181, and the air pipe joint 114 can be installed on the limit block 113. Specifically, the bottom of the limit installation groove 181 of the connecting sleeve 18 (as Figure 4 shown by the spring limit step shown) can have a bottom through hole 182, and the air pipe joint 114 can be docked with the bottom through hole 182. The elastic lifting shaft 15 can have a lifting shaft ventilation hole 151. One end of the lifting shaft ventilation hole 151 close to the connecting sleeve 18 can be provided with threads, so that the limit block 113 can be threadedly connected with the lifting shaft ventilation hole 151. The limit block 113 can have an air pipe counterbore 1131 and a docking ventilation hole 1132. The docking ventilation hole 1132 can communicate with the air pipe counterbore 1131 and also communicate with the lifting shaft ventilation hole 151 of the elastic lifting shaft 15. The air pipe counterbore 1131 of the limit block 113 can be used to arrange the air pipe joint 114, and the docking ventilation hole 1132 can be docked with the air pipe joint 114. Thus, the air extraction component 2 can extract gas through the bottom through hole 182, the air pipe joint 114, the docking ventilation hole 1132 of the limit block 113, and the lifting shaft ventilation hole 151 of the elastic lifting shaft 15.

[0052] As Figure 5 shown, a spring 115 can be arranged on the outer periphery of the air pipe joint 114 and abuts between the limit block 113 and the bottom of the limit installation groove 181 (as Figure 4 shown by the spring limit step shown). In some embodiments, one end of the spring 115 can be arranged in the air pipe counterbore 1131 of the limit block 113. The air pipe counterbore 1131 can be used to limit the outer periphery of the spring 115, which is beneficial to reducing the possibility of the spring 115 being bent, reducing the displacement amount of the spring deviating from the assembly axis of the product 3, and enabling the elastic lifting shaft 15 to elastically move along the assembly axis of the product 3. Additionally, the spring 115 will not occupy the moving stroke of the limit block 113 along the assembly axis of the product 3 in the limit installation groove 181.

[0053] Before assembly, the spring 115 can exert pressure on the limit block 113, causing the limit block 113 to contact the guide sleeve 112. During the assembly process, when there is a jamming situation, the elastic lifting shaft 15 can move towards the connecting sleeve 18, and the limit block 113 moves towards the bottom of the limit mounting groove 181 (such as Figure 4 shown by the spring limit step shown). The air pipe joint 114 connected to the limit block 113 follows the elastic lifting shaft 15 and moves towards the air extraction component 2, so that the air pipe joint 114 can gradually extend into the bottom through hole 182 of the limit mounting groove 181 (the aperture size of the bottom through hole 182 should be larger than the outer diameter size of the air pipe joint 114). After the assembly is completed or after the jamming situation disappears, under the restoring force of the spring 115, the limit block 113 can move back to contact the guide sleeve 112 again.

[0054] As Figure 2 shown, at one end of the mounting bushing 17 away from the connecting sleeve 18 and on one side of the mounting bushing 17, that is, outside the assembly axis of the product 3, a detection sensor 11 can be provided. At one end of the elastic lifting shaft 15 away from the connecting sleeve 18 and on one side of the elastic lifting shaft 15, that is, outside the assembly axis of the product 3, a detection sweeping piece 12 can be provided, and the detection sweeping piece 12 can be arranged opposite to the detection sensor 11. The detection sweeping piece 12 can move up and down simultaneously with the elastic lifting shaft 15 to realize the lifting monitoring of the elastic lifting shaft 15. Thus, the detection sensor 11 and the detection sweeping piece 12 can be jointly used to identify the relative movement of the mounting bushing 17 and the elastic lifting shaft 15, and this relative movement situation can reflect the jamming situation during the assembly of the product 3. When there is a jam, the detection sensor 11 installed on the mounting bushing 17 senses the upward moving detection sweeping piece and emits a jamming signal to identify the jam. Thus, it can be ensured that the jamming is effectively identified during the assembly process.

[0055] In some embodiments, as Figures 2 to 4 shown, the elastic lifting shaft 15 can have a lifting shaft main body 152 and a lifting shaft step portion 153, and the lifting shaft main body 152 of the elastic lifting shaft 15 can move within the inner cavity of the mounting bushing 17. The lifting shaft step portion 153 of the elastic lifting shaft 15 can extend from the lifting shaft main body 152 away from the assembly axis of the product 3. As Figure 2 and Figure 4 shown, an anti-rotation pin 16 can be provided on one side of the lifting shaft step portion 153 close to the mounting bushing 17. The mounting bushing 17 can have an anti-rotation groove, and the anti-rotation pin 16 can extend into the anti-rotation groove and can move within the anti-rotation pin 16 following the elastic lifting shaft 15.

[0056] As Figure 2 and Figure 4As shown, a suction head 13 may be provided on one side of the elastic lifting shaft 15 away from the mounting bushing 17, and the suction head 13 can move along the assembly axis of the product 3 following the elastic lifting shaft 15. The suction head 13 and the elastic lifting shaft 15 may be fixedly connected by a nut 14.

[0057] As Figure 6 shown, one end of the elastic lifting shaft 15 away from the mounting bushing 17 may have a lifting shaft protrusion 154. The lifting shaft protrusion 154 may protrude from the lifting shaft body 152 of the elastic lifting shaft 15 along the assembly axis of the product 3. The outer periphery of the lifting shaft protrusion 154 may have a thread for cooperating with the nut 14.

[0058] The suction head 13 may include a suction head body 131, a suction head step portion 132, and a suction head protrusion 133. The suction head body 131 may be disposed on the assembly axis of the product 3 and extend along the assembly axis of the product 3. The suction head step portion 132 may extend from the suction head body 131 away from the assembly axis of the product 3. The suction head protrusion 133 may extend from the suction head body 131 along the assembly axis of the product 3 toward the elastic lifting shaft 15. The suction head protrusion 133 may be snap-fitted at the notch of the suction head mounting groove 155 of the lifting shaft protrusion 154, and one side of the suction head step portion 132 may abut against the lifting shaft protrusion 154 of the elastic lifting shaft 15.

[0059] The nut 14 may have a nut inner cavity 141. One side of the nut inner cavity 141 is provided with a thread for realizing the fastening of the nut 14 and the elastic lifting shaft 15. The outer peripheral dimension of the suction head step portion 132 is smaller than the opening dimension of the nut inner cavity 141 near the thread and larger than the opening dimension of the nut inner cavity 141 away from the thread, facilitating the suction head body 131 of the suction head 13 to pass through the opening of the nut inner cavity 141 away from the thread, and the suction head step portion 132 can abut against the inner wall of the nut inner cavity 141. During installation, insert the suction head 13 into the nut 14, and connect the nut 14 to the threaded end of the elastic lifting shaft 15. During replacement, only need to unscrew the nut 14, replace the suction head 13 of another specification, and then complete the installation to be compatible with the assembly of different specification products.

[0060] The lifting shaft protrusion 154 may have a suction head mounting groove 155. The lifting shaft vent hole 151 of the elastic lifting shaft 15 may penetrate through the bottom of the suction head mounting groove 155 and communicate with the suction head mounting groove 155. The suction head 13 may have a suction head vent hole 134. One end of the suction head vent hole 134 may be disposed at the suction head protrusion 133 and communicate with the suction head mounting groove 155. The other end of the suction head vent hole 134 may be located on the adsorption end surface of the suction head 13. The adsorption end surface may be located at one end of the suction head 13 away from the elastic lifting shaft 15. The adsorption end surface may be used to contact the product 3. In some embodiments, the suction head vent hole 134 may be a through hole penetrating through the suction head main body 131 and the suction head protrusion 133, and the suction head vent hole 134 may extend along the assembly axis of the product 3.

[0061] That is to say, in combination with the foregoing, the air extraction component 2 may extract gas through the lifting shaft vent hole 151 of the elastic lifting shaft 15, the suction head mounting groove 155, and the suction head vent hole 134 of the suction head 13, so as to adsorb the product 3 on the adsorption end surface of the suction head 13, and further load the product 3 into the housing 4. In some possible scenarios, the clearance between the suction head 13 and the inner hole of the housing 4 is 0.2 mm. During the assembly process, the suction head 13 should not contact the inner wall of the inner hole of the housing 4 as much as possible.

[0062] To improve the positioning accuracy of the suction head 13 for the product 3, a positioning pin 19 may be provided on the suction head 13, and a positioning pin pressing block 110 and a spring 111 may be provided in the suction head mounting groove 155. The positioning pin 19 is elastically pressed by the spring 111 and the positioning pin pressing block 110, so that the 19 floats elastically in the assembly direction to prevent the product 3 from being damaged by position misalignment.

[0063] The positioning pin 19 may have a positioning rod 191 and a positioning seat 192. The positioning rod 191 may extend from the positioning seat 192 along the assembly axis of the product 3 away from the elastic lifting shaft 15. The suction head 13 may have a suction head central through hole 135. The suction head central through hole 135 may be disposed on the assembly axis of the product 3 and extend along the assembly axis of the product 3. The suction head central through hole 135 may penetrate through the suction head main body 131 and the suction head protrusion 133. The positioning rod 191 may pass through the suction head central through hole 135, and the end of the positioning rod 191 may be inserted into the central hole of the product 3 to realize the cooperative positioning of the positioning pin 19 and the product 3. The positioning pin pressing block 110 may be located between the positioning pin 19 and the spring 111. The spring 111 may abut against the positioning pin pressing block 110 under the action of the compression force, and then the positioning seat 192 of the positioning pin 19 may abut against the suction head 13. During the force application assembly process, the spring 111 may be compressed and the positioning pin 19 may move upward to avoid excessive pressure change during the assembly process and cause damage. The spring type can be selected according to the actual required assembly force. In the embodiment, the assembly force of the product 3 is about 180 g, and the corresponding spring type is selected.

[0064] There may be a relatively large gap or space between the locating pin pressing block 110 and the suction head mounting groove 155 of the elastic lifting shaft 15, as well as between the spring 111 and the suction head mounting groove 155 of the elastic lifting shaft 15, so that smooth gas flow can be achieved between the lifting shaft vent holes 151 on both sides of the suction head mounting groove 155 and the suction head vent holes 134 of the suction head 13, realizing the product vacuum adsorption cavity passage. The gap between the locating pin 19 and the suction head central through hole 135 can be relatively small, for example, the fit gap is 0.01 - 0.03 mm. When the suction head 13 adsorbs the product 3 through the suction head vent holes 134, the locating pin 19 blocks the suction head central through hole 135 of the suction head 13 to a certain extent, thereby reducing air leakage and improving the adsorption stability of the suction head 13 to the product 3.

[0065] Although the present invention is disclosed above with preferred embodiments, it is not intended to limit the present invention. Any person skilled in the art can make possible changes and modifications without departing from the spirit and scope of the present invention. Therefore, the protection scope of the present invention should be subject to the scope defined by the claims of the present invention.

Claims

1. An assembly mechanism, characterized in that, Comprising: An installation bushing (17) having a cavity; An elastic lifting shaft (15) disposed within the cavity of the installation bushing (17); A suction head (13) disposed at one end of the elastic lifting shaft (15) away from the installation bushing (17) for adsorbing a product (3); During the assembly process of the product (3), under the action of the jamming force of the product (3), the elastic lifting shaft (15) can move along the assembly axis within the cavity; A detection sensor (11) and a detection sweeping piece (12) are respectively disposed on the same side of the installation bushing (17) and the elastic lifting shaft (15), and the detection sensor (11) and the detection sweeping piece (12) are oppositely disposed for detecting the relative movement of the installation bushing (17) and the elastic lifting shaft (15), and the relative movement condition is used to indicate the assembly jamming condition of the product (3); The assembly mechanism further comprises: An air extraction component, including a connecting sleeve (18) fixedly connected to the installation bushing (17), and the side of the connecting sleeve (18) facing the installation bushing (17) has a limit installation groove (181); a limit block (113) fixedly connected to the elastic lifting shaft (15) and disposed within the limit installation groove (181); A first spring (115) abutted between the limit block (113) and the bottom of the limit installation groove (181); The bottom of the limit installation groove (181) has a bottom through hole (182), and the air extraction component is used to extract air through the bottom through hole (182); the elastic lifting shaft (15) has a lifting shaft ventilation hole (151); the assembly mechanism further comprises: An air pipe joint (114) installed on the limit block (113), the first spring (115) is wound around the outer periphery of the air pipe joint (114), the air pipe joint (114) penetrates between the bottom through hole (182) and the lifting shaft ventilation hole (151), and the air pipe joint (114) is oppositely disposed to the bottom through hole (182) and can move within the bottom through hole (182) under the action of the limit block (113); when there is a jamming situation, the elastic lifting shaft (15) moves towards the connecting sleeve (18), and the limit block (113) moves towards the bottom of the limit installation groove (181); the air pipe joint (114) connected to the limit block (113) moves towards the air extraction component (2) following the elastic lifting shaft (15), so that the air pipe joint (114) gradually extends into the bottom through hole (182) of the limit installation groove (181); After the assembly is completed or after the jamming situation disappears, under the restoring force of the first spring (115), the limit block (113) moves back to contact the guide sleeve (112) again; The detection scanning piece (12) rises and falls simultaneously with the elastic lifting shaft (15), realizing the lifting monitoring of the elastic lifting shaft (15), so that the detection sensor (11) and the detection scanning piece (12) are jointly used to identify the relative movement of the mounting bush (17) and the elastic lifting shaft (15), and this relative movement reflects the jamming situation of the product (3) during the assembly process; when there is jamming, the detection sensor (11) installed on the mounting bush (17) senses the upward moving detection scanning piece and issues a jamming signal to identify the jamming.

2. The assembly mechanism according to claim 1, characterized in that, The limiting block (113) has an air pipe counterbore (1131), and the air pipe joint (114) and the first spring (115) are sleeved in the air pipe counterbore (1131).

3. The assembly mechanism according to claim 1, wherein, A guide sleeve (112) is arranged in the cavity of the mounting bush (17), and the elastic lifting shaft (15) can move along the assembly axis in the guide sleeve (112).

4. The assembly mechanism according to any one of claims 1 to 3, characterized in that, The elastic lifting shaft (15) has a lifting shaft protrusion (154) protruding away from the mounting bush (17); The suction head (13) includes a suction head main body (131) and a suction head step portion (132), and the suction head step portion (132) extends from the suction head main body (131) away from the assembly axis. The assembly mechanism further includes: a nut (14), the nut (14) has a nut inner cavity (141), the first opening of the nut inner cavity (141) is in threaded cooperation with the lifting shaft protrusion (154), the suction head main body (131) passes through the second opening of the nut inner cavity (141), the suction head step portion (132) abuts between the inner wall of the nut inner cavity (141) and the lifting shaft protrusion (154), and the outer diameter dimension of the suction head step portion (132) is smaller than the inner diameter dimension of the first opening and larger than the inner diameter dimension of the second opening.

5. The assembly mechanism according to claim 4, characterized in that, The lifting shaft protrusion (154) has a suction head mounting groove (155), the suction head (13) further includes a suction head protrusion (133) protruding towards the mounting bush (17), and the suction head protrusion (133) is clamped with the suction head mounting groove (155).

6. The assembly mechanism according to claim 5, characterized in that, The assembly mechanism further includes: a positioning pin (19), the positioning pin (19) passes through the suction head (13) and is used for cooperating with the central hole of the product (3); a positioning pin pressing block (110) and a second spring (111), which are accommodated in the suction head mounting groove (155), the positioning pin pressing block (110) is arranged between the second spring (111) and the positioning pin (19), and the second spring (111) abuts between the positioning pin pressing block (110) and the elastic lifting shaft (15).

7. The assembly mechanism according to claim 6, characterized in that, The elastic lifting shaft (15) has a lifting shaft vent hole (151), and the air extraction component is used to extract air through the lifting shaft vent hole (151); the suction head mounting groove (155) communicates with the lifting shaft vent hole (151), and the suction head (13) has a suction head vent hole (134) that penetrates between the suction head mounting groove (155) and the adsorption end face, and the adsorption end face is the end face of the suction head (13) for adsorbing the product (3).

8. The assembly mechanism according to claim 7, characterized in that The gap between the suction head (13) and the positioning pin (19) is smaller than the gap between the positioning pin pressing block (110) and the suction head mounting groove (155).

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