CN206393165U - A kind of semi-automatic rotary riveting tool - Google Patents

Abstract

The utility model discloses a semi-automatic rotary riveting tool, which belongs to the technical field of riveting tooling. The utility model comprises a press, an upper die, a lower die, a material taking unit and an electric control unit. The upper die is connected with the press, and an indexing unit is arranged below the upper die. The indexing unit includes a pneumatic The divider and the index plate, the pneumatic divider drives the index plate to rotate in the horizontal direction; the lower mold is provided with multiple, and the plurality of lower molds are movable and arranged on the index plate at equal intervals; the reclaiming unit It is arranged on the side of the indexing unit, and the retrieving unit absorbs the riveted parts; the electronic control unit is used to control the coordinated action of various mechanisms. The utility model can complete the riveting of two or more parts at one time, and complete the three steps of feeding, riveting and retrieving at the same time, and the creative modular design can replace the riveting of different parts, only need to replace the upper and lower molds , expanding the scope of use of equipment and improving work efficiency.

Description

A semi-automatic rotary riveting tool

technical field

The utility model relates to the technical field of riveting tooling, more specifically, relates to a semi-automatic rotary riveting tooling; the utility model is suitable for semi-automatic riveting of two parts in low-voltage circuit breakers, and can also be extended to semi-automatic riveting of similar hardware .

Background technique

Riveting is one of the most common processing techniques in the industrial production process of products, which is to rivet two or more workpieces together. With the continuous deepening of my country's power grid transformation, the demand for low-voltage circuit breaker products continues to increase. In order to ensure the safety, reliability and continuity of power supply and distribution, the requirements for circuit breakers are getting higher and higher. Many components in low-voltage circuit breaker products are riveted by two or more parts.

At present, in the circuit breaker production industry, the circuit breaker is usually assembled manually, and the staff manually loads the material and operates it manually. After the riveting is completed, it is manually taken out and put into the turnover box. However, due to the large number of circuit breaker parts, different shapes, and complex assembly process, manual assembly directly leads to the need for a large amount of labor in the assembly process, which is time-consuming and laborious, and the production efficiency is low. And in the actual assembly process, the proficiency of the workers themselves is different, and the assembly habits are different, which will lead to the defects of poor assembly consistency and continuity, which will directly affect the assembly quality. Under the background of the national strategy of Made in China 2025, in the trend of vigorously advocating innovation and upgrading, improving quality and efficiency, in order to meet the needs of production and improve efficiency, it is very necessary to design a tooling equipment that meets the riveting requirements.

After searching, the Chinese patent application number 201110169318.9, the application date is June 22, 2011, and the name of the invention is: circuit breaker semi-automatic auxiliary assembly device; the application discloses a circuit breaker semi-automatic auxiliary assembly device, including a working platform, so A turntable driven by a driving device is installed on the working platform, and a number of circuit breaker assembly pre-assembly fixtures are arranged at intervals on the turntable; at the same time, casing riveting devices are arranged sequentially along the rotation direction of the turntable on the working platform , an automatic product detection device, an automatic screw assembly device and a manipulator retrieving device, wherein the automatic product detection device is electrically connected to the automatic screw assembly device. The device provided in this application can improve production efficiency, improve product assembly consistency and coherence, thereby realizing industrial semi-automatic production of circuit breakers.

China Patent No. ZL 201521015437.9, the authorized announcement date is August 10, 2016, and the name of the invention is: an automatic riveting machine; the application includes a main box, a riveting turntable, a riveting servo motor, a rivet feeding mechanism, a feeding mechanism, discharge mechanism and electric control box; the riveting turntable is rotatably arranged on the working platform in the main box, and several clamps are arranged on the disc surface; the drive shaft of the riveting servo motor is provided with a riveting upper die . When working, the operator puts the product input by the feeding mechanism on the fixture at the loading station, then the riveting turntable rotates and transports the product to the nailing station, the rivet feeding mechanism installs the rivets on the product, and then the riveting turntable continues After rotating and transporting the product to the nailing station, the riveting servo motor drives the riveting upper mold to move down to join with the fixture, riveting, and finally output through the discharge mechanism. The application can automatically complete the riveting of products, reduce labor intensity and improve production efficiency.

The above applications all provide circuit breaker auxiliary assembly tooling that can improve production efficiency, but the structural design of the above applications has its own particularity and pertinence, and the promotion and application are not strong; and especially the second application, the structural design is very complicated , the manufacturing cost is higher, and it is more inconvenient to popularize and apply.

Utility model content

1. The technical problems to be solved by the utility model

The purpose of the utility model is to overcome the problems of low automation, time-consuming and laborious and low production efficiency of the existing circuit breaker riveting assembly process, and provide a semi-automatic rotary riveting tool; using the riveting tool of the utility model, employees manually put the parts in place , the indexing plate rotates automatically, the press automatically presses down for riveting, while the riveting cylinder is automatically riveting, the retrieving device automatically takes out the riveted parts, and the staff puts new parts in the empty station, that is, discharging, The three actions of riveting and retrieving are carried out at the same time, which saves a lot of time, reduces labor intensity, and more than doubles the work efficiency.

2. Technical solution

In order to achieve the above object, the technical solution provided by the utility model is:

A semi-automatic rotary riveting tool of the present invention includes a press, an upper die, a lower die, a material retrieving unit and an electric control unit. The upper die is connected to the press, and an indexing unit is arranged below the upper die. The indexing unit includes a pneumatic divider and an indexing plate, and the pneumatic divider drives the indexing plate to rotate in the horizontal direction; the lower mold is provided with a plurality of them, and the plurality of lower molds are movable at equal intervals on the indexing plate Above; the retrieving unit is set on the side of the indexing unit, and the retrieving unit absorbs the riveted parts; the electronic control unit is used to control the coordinated action of various mechanisms.

Furthermore, positioning holes are provided on the indexing plate, positioning pins are provided on the lower die, and the lower die is fixed on the indexing plate by inserting the positioning pins into the positioning holes.

Furthermore, the said indexing plate is provided with lightening holes, and the lightening holes are distributed on the indexing plate at equal intervals, and are spaced apart from the lower mold.

Furthermore, the said retrieving unit includes a bracket, a left and right cylinder, an up and down cylinder, an electromagnetic magnet and a sensor. The left and right cylinders are fixed on the bracket, and the pistons of the left and right cylinders move along the horizontal direction; The piston end of the cylinder and the piston of the upper and lower cylinders move in the vertical direction; the electromagnetic absorber is fixed on the piston end of the upper and lower cylinder; the sensor is fixed on the end of the bracket close to the indexing plate.

Furthermore, the upper surface of the lower mold is provided with a groove, and two lower thimbles arranged at intervals are arranged in the groove, and positioning inserts are symmetrically arranged on both sides of the groove; the positioning pins are arranged on the lower mold. two diagonal directions of .

Furthermore, the upper mold includes an upper mold handle, an upper baffle plate, an upper fixing plate, a jacking screw, a preload spring and a preloading punch, and the described jacking screw passes through the upper mold handle, the upper baffle plate and the upper fixing plate, the preloading punch protrudes from the upper fixing plate, and a preloading spring is arranged between the tightening screw and the preloading punch.

3. Beneficial effect

Compared with the existing known technology, the technical solution provided by the utility model has the following remarkable effects:

(1) A semi-automatic rotary riveting tooling of the present utility model, which is designed with an indexing unit, the indexing unit is selected from a standard pneumatic divider, equipped with a specially designed indexing plate surface, through pneumatic indexing, not only high precision, but also mechanical structure Stable; and through the cooperation of the indexing unit and other mechanisms, the three actions of unloading, riveting, and retrieving are realized at the same time, and the relatively scattered processes originally carried out manually are integrated to form a coherent operation. After the integration of the process, it can be greatly improved. Reduce the time required for the riveting process, reduce labor intensity, and effectively improve production efficiency;

(2) A semi-automatic rotary riveting tool of the present utility model, which has a positioning hole on the indexing plate, and the lower die is fixed on the indexing plate by inserting the positioning pin into the positioning hole, corresponding to various parts to be riveted It is only necessary to replace the corresponding lower mold, which is convenient to adapt to production scheduling, quickly and flexibly replace different lower molds, riveting and processing different parts, and the universal applicability of the whole tooling is stronger;

(3) A semi-automatic rotary riveting tooling of the present utility model, the retrieving unit uses the left and right cylinders and the upper and lower cylinders to drive the electromagnetic suction iron to move, and then energizes the electromagnetic suction iron to absorb the riveted parts, and the parts are taken away and put into the turnover The box adopts pneumatic and magnetic composite design, which can ensure that the riveted parts are reliably absorbed and removed from the indexing plate in time, thereby ensuring the continuity of production;

(4) A semi-automatic rotary riveting tool of the present invention, the upper and lower molds are designed according to the riveting characteristics of the yoke and the stainless steel bracket, which can not only ensure that a set of molds can adapt to the riveting of parts in two opposite directions, but also can adapt to at least Parts of two sizes are riveted; on the other hand, the design of the pre-pressing punch and positioning insert can also ensure that the parts are reliably fixed during the riveting process and ensure the final riveting quality;

(5) In the semi-automatic rotary riveting tooling of the present utility model, the employee puts the parts in place manually, the indexing plate rotates automatically, and the press automatically presses down for riveting. The parts are taken out, and the employees put new parts in the empty station, that is, the three actions of unloading, riveting, and retrieving are carried out at the same time, which saves a lot of time, reduces labor intensity, and more than doubles the work efficiency.

Description of drawings

Fig. 1 is the structural representation of a kind of semi-automatic rotary riveting tool of the present utility model;

Fig. 2 is the structural representation of patrix in the utility model;

Fig. 3 is the sectional structure schematic diagram of upper mold in the utility model;

Fig. 4 is the structural representation of the indexing unit in the utility model;

Fig. 5 is the structural representation of the index plate in the utility model;

(a) in Fig. 6 is a structural schematic diagram of a release device; (b) in Fig. 6 is a structural schematic diagram of riveted parts in Embodiment 2;

Fig. 7 is the structural representation of lower die in the utility model;

Fig. 8 is a schematic diagram of the use state of the lower mold in the utility model;

Fig. 9 is a schematic structural view of the reclaiming unit in the utility model;

Fig. 10 is a traditional riveting process flow chart;

Fig. 11 is a flow chart of the process after using the riveting tooling of the present invention.

Labels in the diagram:

1. Press machine; 2. Upper mold; 21. Upper mold handle; 22. Upper baffle; 23. Upper fixing plate; 24. Fixing pin; 25. Top tightening screw; 26. Preload spring; 27. Preload punch 3. Indexing unit; 31. Bottom plate; 32. Pneumatic divider; 321. Indexing cylinder; 33. Indexing plate; 331. Lightening hole; 332. Positioning hole; 4. Lower mold; 41. Lower fixing Plate; 411, positioning insert; 412, lower thimble; 413, give way groove; 42, lower baffle; 43, positioning pin; 5, retrieving unit; 51, bracket; 52, left and right cylinders; 54. Electromagnetic magnet; 55. Sensor; 6. Tooling frame; 7. Electronic control unit; 81. Magnetic yoke; 82. Stainless steel bracket; 83. Riveting point.

detailed description

In order to further understand the content of the utility model, the utility model is described in detail in conjunction with the accompanying drawings and embodiments.

Example 1

In order to cope with the increasing output and rising labor costs, this embodiment provides a semi-automatic rotary riveting tool according to the characteristics of many types of riveting parts in circuit breaker products. The ultimate goal of this embodiment is to simplify the riveting process. It only needs to load the material, and the rest of the actions are automatically completed by the equipment, and the finished product can be obtained directly, and the riveting quality is reliable.

Referring to Fig. 1, the rotary riveting tool of this embodiment adopts parametric modeling and modular design. It mainly includes a press 1, an upper die 2, an indexing unit 3, a lower die 4, a reclaiming unit 5, a tooling frame 6 and an electric control unit 7. The tooling frame 6 is a sheet metal frame structure, which is formed by standard C-shaped folding columns and corner braces, which is convenient for construction and low in cost. The height of the tooling frame 6 is designed according to the general employee's sitting posture, which is convenient for operation. The electric control unit 7 is arranged under the operating table of the tooling frame 6, and the electric control unit 7 adopts a PLC overall control mode to control the coordinated actions of various mechanisms such as the press machine 1, the indexing unit 3, and the retrieving unit 5.

The upper mold 2 is connected to the press 1, and the press 1 is arranged on the operating table of the tooling frame 6, and the upper mold 2 is transformed by utilizing the existing cylinder on the workshop section. An indexing unit 3 is arranged below the upper mold 2. Referring to FIG. 4, the indexing unit 3 selects a standard pneumatic divider 32 and is coupled with a specially designed indexing plate 33. The pneumatic divider 32 is arranged on the bottom plate 31 , the index cylinder 321 of the pneumatic divider 32 drives its internal gear to rotate, and the index plate 33 is connected with the output shaft of the pneumatic divider 32, and the pneumatic divider 32 drives the index plate 33 to rotate in the horizontal direction. The angle is fixed.

Referring to Fig. 5, the indexing plate 33 is a disc structure, and the indexing plate 33 is provided with a plurality of weight-reducing holes 331 and positioning holes 332. In this embodiment, there are six lower molds 4, and the lower mold Positioning pins 43 are arranged on the 4, and the six lower dies 4 are all arranged on the index plate 33 at equal intervals by inserting the positioning pins 43 into the positioning holes 332. The weight-reducing holes 331 are also equally spaced on the index plate 33 , and are spaced apart from the lower mold 4 .

In this embodiment, positioning holes are provided on the indexing plate, and the lower die is fixed on the indexing plate by inserting the positioning pins into the positioning holes. Corresponding to various parts to be riveted, it is only necessary to replace the corresponding lower die, which is easy to adapt Production scheduling, rapid and flexible replacement of different lower dies, riveting processing of different parts, the general applicability of the entire tooling is stronger. The weight reduction holes 331 at equal intervals are mainly to reduce the weight of the indexing plate 33, so that the pneumatic divider 32 can drive the indexing plate 33 to rotate, reduce energy waste, and avoid the large rotational inertia caused by the excessive weight of the indexing plate 33. The movement accuracy of the lower mold 4.

The retrieving unit 5 is arranged on the side of the indexing unit 3 and fixed on the operating table of the tooling frame 6. The retrieving unit 5 is used to absorb the riveted parts. Referring to Fig. 9, the retrieving unit 5 of the present embodiment includes a support 51, a left and right cylinder 52, an upper and lower cylinder 53, an electromagnetic magnet 54 and a sensor 55, and the left and right cylinders 52 are fixed on the support 51, and the pistons of the left and right cylinders 52 are aligned along the horizontal direction. Movement; described upper and lower cylinders 53 are fixed on the piston ends of left and right cylinders 52, and the pistons of up and down cylinders 53 move vertically; described electromagnetic absorbers 54 are fixed on the piston ends of upper and lower cylinders 53; described sensors 55 are fixed At the end of the bracket 51 close to the index plate 33, the sensor 55 is used to collect relevant signals and send them to the electronic control unit 7, so that the electronic control unit 7 can judge when to energize the electromagnetic magnet 54, and when to control the left and right cylinders 52, up and down. Cylinder 53 moves.

In this embodiment, the left and right cylinders and the upper and lower cylinders are used to drive the electromagnetic iron to move, and then the electromagnetic iron is energized to absorb the riveted parts, and the parts are taken away and put into the turnover box. The pneumatic and magnetic composite design can ensure the riveted parts The parts are reliably sucked and removed from the indexing table in time, thus ensuring the continuity of production.

Referring to Fig. 10 and Fig. 11, before using the rotary riveting tool of this embodiment, the staff needs to manually place the parts to be riveted, then start the riveting machine to rive the parts, and take out the parts after the riveting is completed. There are many operating steps for the staff, and the operation is more complicated and the efficiency is not high. After using the rotary riveting tool of this embodiment, it is only necessary to fix the lower mold 4 designed according to the structural characteristics of the parts to be riveted on the index plate 33 through the positioning pin 43, and the staff manually put the parts to be riveted to control the indexing The disc 33 rotates automatically, and the press 1 drives the upper die 2 to move down for automatic riveting. At the same time as the automatic riveting, the retrieving unit 5 automatically takes out the riveted parts. It is a riveting process in which the three actions of material, riveting and reclaiming are carried out at the same time. Such a large amount of time is saved, labor intensity is reduced, and work efficiency is at least doubled.

Example 2

The semi-automatic rotary riveting tool of this embodiment is mainly suitable for processing riveted parts as shown in (b) in FIG. 6 . (a) in Fig. 6 shows the core component of a circuit breaker --- the tripper, and the yoke 81 is arranged on both sides of the connecting plate of the tripper, and the yoke 81 and the stainless steel bracket 82 needs to be connected as a whole by riveting, and it can be seen from (a) in FIG. 6 that the yoke 81 on both sides of the connecting plate and the stainless steel bracket 82 are mirror images. In this embodiment, the riveting processing of the magnetic yoke 81 and the stainless steel bracket 82 on both sides of the connecting plate is completed on the same set of moulds. For this reason, a set of upper and lower molds are specially designed in this embodiment, and the specific structure is as follows:

Referring to Fig. 7 and Fig. 8, the lower mold 4 of the present embodiment includes a lower fixing plate 41 and a lower baffle 42, the lower fixing plate 41 and the lower baffle 42 are connected by fixing pins, and a square concave is provided on the upper surface of the lower fixing plate 41. Groove, the groove is provided with two lower thimbles 412 arranged at intervals, and the side of the two lower thimbles 412 is also provided with a relief groove 413. Positioning inserts 411 are arranged symmetrically on both sides of the groove, and the positioning inserts 411 are rectangular strip-shaped protrusions. The positioning pins 43 are arranged at two opposite corners of the lower mold 4 , and the positioning pins 43 are arranged diagonally, which is helpful for the reliable fixing of the lower mold 4 .

In this embodiment, when riveting the magnetic yoke 81 and the stainless steel bracket 82 on one side of the connecting plate, only the magnetic yoke 81 needs to be placed in the groove of the lower die 4, and the stainless steel bracket 82 is placed on the magnetic yoke 81, and the magnetic yoke The riveting point 83 between 81 and the stainless steel bracket 82 is located on the lower thimble 412, and one leg of the stainless steel bracket 82 is engaged with the positioning insert 411 on one side of the lower mold 4; When the stainless steel bracket 82 is used, the magnetic yoke 81 and the stainless steel bracket 82 are placed in the opposite direction, and the legs of the stainless steel bracket 82 are engaged with the positioning insert 411 on the other side of the lower mold 4, so that a set of molds can be adapted to the two opposite directions. The parts are riveted. And because the releasers of different sizes and models have different sizes of the yoke 81 and the stainless steel bracket 82, the distance between the two riveting points 83 must be kept consistent, so the width of the square groove designed in this embodiment is larger than that of a set of magnetic yokes. The width of the yoke 81 and the stainless steel bracket 82 is twice as large, which ensures that the lower die 4 of this embodiment can be adapted to riveting parts of at least two sizes.

Referring to Fig. 2 and Fig. 3, the upper mold 2 of the present embodiment includes an upper mold handle 21, an upper baffle plate 22, an upper fixing plate 23, a jacking screw 25, a preload spring 26 and a preload punch 27, the top The tightening screw 25 passes through the upper mold handle 21, the upper baffle plate 22 and the upper fixing plate 23, the upper fixing plate 23 is a T-shaped structure, the upper baffle plate 22 is fixed with the upper fixing plate 23 by the fixing pin 24, and the pre-press punching The head 27 stretches out from the upper fixing plate 23, and a pre-compression spring 26 is set between the tightening screw 25 and the pre-compression punch 27.

During riveting, the stainless steel bracket 82 is limited by the positioning insert 411 and will not move in the horizontal direction. Before the upper die 2 touches the riveting point 83, the pre-pressing punch 27 has already abutted between the two riveting points 83, so The yoke 81 and the stainless steel bracket 82 will not move in the vertical direction. The design of the pre-pressing punch 27 and the positioning insert 411 ensures that the parts are reliably fixed during the riveting process, and the riveting quality of the final product is good.

In addition, the upper baffle plate 22 of this embodiment is fixed to the upper fixing plate 23 through the fixing pins 24, and the lower fixing plate 41 and the lower baffle plate 42 are also connected through the fixing pins, so that fast assembly, mold change or installation can be realized by disassembling the fixing pins. On different presses or desktop punching machines, it greatly facilitates production scheduling and saves mold development and manufacturing costs.

Using the rotary riveting tooling of this embodiment, the process of realizing semi-automatic rotary riveting is as follows:

Step 1. Fix the lower mold 4 on the index plate 33 through the positioning pin 43. The staff manually put the yoke 81 in the groove of the lower mold 4, and place the stainless steel bracket 82 on the yoke 81. The yoke The riveting point 83 between 81 and the stainless steel bracket 82 is located on the lower thimble 412, and one leg of the stainless steel bracket 82 is engaged with the positioning insert 411 on one side of the lower mold 4;

Step 2: Control the automatic rotation of the index plate 33, the press 1 drives the upper mold 2 to move down and automatically rivet, and at the same time of automatic riveting, the retrieving unit 5 automatically takes out the riveted parts, and the staff puts them in the empty station. The new parts realize the riveting process of discharging, riveting and retrieving at the same time;

Step 3: When the yoke 81 and the stainless steel bracket 82 in the opposite direction need to be riveted, place the yoke 81 and the stainless steel bracket 82 in the opposite direction, and the legs of the stainless steel bracket 82 are fastened with the positioning insert 411 on the other side of the lower mold 4 , repeat step 2.

The above schematically describes the utility model and its implementation, which is not restrictive, and what is shown in the accompanying drawings is only one implementation of the utility model, and the actual structure is not limited thereto. Therefore, if a person of ordinary skill in the art is inspired by it, and without departing from the purpose of the invention of the utility model, without creatively designing a structural mode and an embodiment similar to the technical solution, it shall belong to the utility model. protected range.

Claims (8)

1. a kind of semi-automatic rotary riveting tool, including press (1), upper mould (2), lower mould (4), feeding unit (5) and automatically controlled list First (7), it is characterised in that：Described upper mould (2) is connected with press (1), and one division unit is provided with below mould (2) on this (3), described index unit (3) includes pneumatic dispenser (32) and index dial (33), and pneumatic dispenser (32) drives index dial (33) rotate in the horizontal direction；Described lower mould (4) is provided with multiple, and multiple lower moulds (4) are movably set in indexing at equal intervals On disk (33)；Described feeding unit (5) is arranged at index unit (3) side, and feeding unit (5) is drawn zero after the completion of riveting Part；Described ECU (7) is used to control each mechanism co-operating.

2. a kind of semi-automatic rotary riveting tool according to claim 1, it is characterised in that：On described index dial (33) Offer and alignment pin (43) is provided with positioning hole (332), lower mould (4), lower mould (4) by alignment pin (43) by inserting positioning hole (332) it is fixed on index dial (33).

3. a kind of semi-automatic rotary riveting tool according to claim 2, it is characterised in that：On described index dial (33) Lightening hole (331) is offered, the lightening hole (331) is spacedly distributed on index dial (33), and be arranged at intervals with lower mould (4).

4. a kind of semi-automatic rotary riveting tool according to claim any one of 1-3, it is characterised in that：Described feeding Unit (5) includes support (51), left and right cylinder (52), upper and lower air cylinders (53), electromagnet (54) and sensor (55), left and right gas Cylinder (52) is fixed on support (51), and the piston of the left and right cylinder (52) is moved in the horizontal direction；Described upper and lower air cylinders (53) The piston end of left and right cylinder (52) is fixed on, the piston of upper and lower air cylinders (53) is vertically moving；Described electromagnet (54) it is fixed on the piston end of upper and lower air cylinders (53)；Described sensor (55) is fixed on support (51) close to index dial (33) One end.

5. a kind of semi-automatic rotary riveting tool according to claim any one of 1-3, it is characterised in that：Described lower mould (4) upper surface offers a groove, two spaced lower thimbles (412) is provided with the groove, in the both sides of groove also It has been symmetrical arranged positioning insert (411)；It is two diagonally opposed that alignment pin (43) is arranged at lower mould (4).

6. a kind of semi-automatic rotary riveting tool according to claim 4, it is characterised in that：Described lower mould (4) it is upper Surface offers a groove, and two spaced lower thimbles (412) are provided with the groove, are also symmetrical arranged in the both sides of groove Positioning insert (411)；It is two diagonally opposed that alignment pin (43) is arranged at lower mould (4).

7. a kind of semi-automatic rotary riveting tool according to claim 5, it is characterised in that：Described upper mould (2) includes Upper die shank (21), overhead gage (22), upper mounted plate (23), holds out against screw (25), pre-compressed spring (26) and precompressed drift (27), institute The holds out against screw (25) stated passes through upper die shank (21), overhead gage (22) and upper mounted plate (23), and described precompressed drift (27) is stretched Go out upper mounted plate (23), pre-compressed spring (26) is set between holds out against screw (25) and precompressed drift (27).

8. a kind of semi-automatic rotary riveting tool according to claim 6, it is characterised in that：Described upper mould (2) includes Upper die shank (21), overhead gage (22), upper mounted plate (23), holds out against screw (25), pre-compressed spring (26) and precompressed drift (27), institute The holds out against screw (25) stated passes through upper die shank (21), overhead gage (22) and upper mounted plate (23), and described precompressed drift (27) is stretched Go out upper mounted plate (23), pre-compressed spring (26) is set between holds out against screw (25) and precompressed drift (27).