A press-down assembly for a press-riveter

Abstract

The utility model discloses a kind of press-in machine lower pressure subassemblies, including cylinder adapter flange column, cylinder sleeve fixed flange and cylinder sleeve, negative pressure passage is equipped in cylinder sleeve fixed flange, negative pressure port that cylinder sleeve fixed flange is equipped with intercommunication negative pressure passage, lower pressure rod is equipped in the center of cylinder sleeve fixed flange bottom, the center of lower pressure rod is equipped with negative pressure airway, lower pressure rod lower end protrudes cylinder sleeve lower surface setting, upper cylinder piston is sheathed in the gas cavity of cylinder sleeve outside of lower pressure rod outer, the bottom of upper cylinder piston is equipped with the positioning sleeve pipe of lower pressure rod sliding cooperation, the outside of cylinder sleeve is equipped with the lower gas connection port of with gas cavity bottom intercommunication, cylinder sleeve fixed flange side is equipped with the upper gas connection port of with gas cavity top intercommunication.The press-in machine lower pressure subassembly is slidably positioned sleeve pipe by being set in lower pressure rod outer, when adsorbing rivet, rivet can be assisted positioning rivet, rivet can be with lower pressure rod between center alignment, improve press-in accuracy.

Description

Technical Field

[0001] This utility model relates to the field of riveting machines, specifically to a riveting machine pressing component. Background Technology

[0002] A riveting press is a new type of riveting equipment developed based on the principle of cold rolling. It refers to mechanical equipment that can rivet items together. It solves the problem that some sheet metal parts cannot be directly placed on ordinary inclined cast steel machines for riveting after bending.

[0003] Riveting machines typically consist of an upper pressing assembly and a lower support assembly. The upper pressing assembly holds the rivet, while the lower support assembly holds the product. Existing upper pressing assemblies use a lower pressing rod with a negative pressure channel in the middle to attract the upper end of the rivet and press it down. However, the lower end of the lower pressing rod is flat, making it difficult to accurately position the rivet. This results in the rivet and the lower pressing rod being in an axially aligned state, often causing riveting deviations during use. Utility Model Content

[0004] The purpose of this utility model is to provide a riveting machine pressing component. This riveting machine pressing component has a positioning sleeve that can slide relative to the pressing rod outside. When adsorbing rivets, it can help position the rivets so that the rivets can be aligned with the center of the pressing rod, thereby improving the riveting accuracy.

[0005] To achieve the above objectives, this utility model provides a pressing assembly for a riveting machine. The pressing assembly includes a cylinder adapter flange, a cylinder sleeve fixing flange connected to the lower end of the cylinder adapter flange, and a cylinder sleeve connected to the lower end of the cylinder sleeve fixing flange. A negative pressure channel is provided inside the cylinder sleeve fixing flange, and a negative pressure port communicating with the negative pressure channel is provided on the outer side of the cylinder sleeve fixing flange. A pressing rod is installed at the center of the bottom of the cylinder sleeve fixing flange, and a negative pressure air passage communicating with the negative pressure channel is provided at the center of the pressing rod. The lower end of the pressing rod protrudes from the lower surface of the cylinder sleeve. An upper cylinder piston is fitted inside the charging / discharging chamber of the cylinder sleeve outside the pressing rod. A positioning sleeve that slides with the pressing rod is provided at the bottom of the upper cylinder piston. A lower air inlet port communicating with the bottom of the charging / discharging chamber is provided on the outer side of the cylinder sleeve, and an upper air inlet port communicating with the top of the charging / discharging chamber is provided on the side of the cylinder sleeve fixing flange.

[0006] Preferably, the lower center of the cylinder adapter flange post is provided with an insertion hole, and the upper center of the cylinder liner fixing flange is provided with an insertion post that is inserted into and pinned to the insertion hole, and the negative pressure channel extends into the insertion post.

[0007] Preferably, the upper end of the insertion post is provided with an opening groove, a plug is screwed into the opening groove, and the negative pressure channel extends upward into the opening groove and communicates with the opening groove.

[0008] Preferably, the lower end of the cylinder liner fixing flange is provided with a protrusion that inserts into the upper port of the charging / discharging chamber, and the top surface of the cylinder liner is embedded with a first seal.

[0009] Preferably, the center of the protruding post is provided with a vertical groove, the upper end of the pressing rod is pressed into and fixed in the vertical groove, and the lower end of the negative pressure channel extends into the vertical groove and communicates with the negative pressure air passage.

[0010] Preferably, the outer side of the upper cylinder piston is fitted with a second seal that makes sealing contact with the inner wall of the inflation / deflation chamber.

[0011] Preferably, the inner side of the upper cylinder piston is provided with a third seal that makes sealing contact with the outer wall of the lower pressure rod.

[0012] Preferably, the inner wall of the lower end shaft hole of the cylinder liner is provided with a fourth seal that makes sealing contact with the positioning sleeve.

[0013] Preferably, an electric cylinder connecting sleeve is integrally provided on the upper end of the cylinder adapter flange column, and a connector is inserted into the electric cylinder connecting sleeve.

[0014] According to the above technical solution, this utility model provides a pressing assembly for a riveting machine. The pressing assembly includes a cylinder adapter flange, a cylinder sleeve fixing flange connected to the lower end of the cylinder adapter flange, and a cylinder sleeve connected to the lower end of the cylinder sleeve fixing flange. A negative pressure channel is provided inside the cylinder sleeve fixing flange, and a negative pressure port communicating with the negative pressure channel is provided on the outside of the cylinder sleeve fixing flange. A pressing rod is installed at the center of the bottom of the cylinder sleeve fixing flange. A negative pressure air passage communicating with the negative pressure channel is provided at the center of the pressing rod. The lower end of the pressing rod protrudes from the lower surface of the cylinder sleeve. An upper cylinder piston is sleeved in the charging and discharging chamber of the cylinder sleeve outside the pressing rod. A positioning sleeve that slides with the pressing rod is provided at the bottom of the upper cylinder piston. A lower air inlet port communicating with the bottom of the charging and discharging chamber is provided on the outside of the cylinder sleeve, and an upper air inlet port communicating with the top of the charging and discharging chamber is provided on the side of the cylinder sleeve fixing flange.

[0015] The working principle and beneficial effects of the riveting machine's pressing assembly are as follows: During operation, compressed air is first injected into the upper air chamber through the upper air inlet, while the lower air inlet recovers the air. At this time, the piston of the upper cylinder moves downward, and the positioning sleeve extends, forming a positioning channel in the middle. Then, a negative pressure device connected to the negative pressure port creates negative pressure within the channel, allowing the rivet to be placed into it. The negative pressure in the channel attracts and pulls the rivet downward. Next, compressed air is injected into the lower air chamber through the lower air inlet, while the upper air inlet recovers the air, pushing the piston of the upper cylinder upward and exposing the rivet. The rivet is now aligned with the pressing rod. Then, an electric cylinder connected to the cylinder-to-flange column drives the riveting machine's pressing assembly to move the rivet downward, pressing it onto the workpiece. This riveting machine's pressing assembly, by providing a relatively sliding positioning sleeve outside the pressing rod, assists in positioning the rivet during adsorption, ensuring center alignment between the rivet and the pressing rod, improving riveting accuracy and product quality.

[0016] Other features and advantages of this invention will be described in detail in the following detailed description section. Attached Figure Description

[0017] The accompanying drawings are provided to further illustrate the present invention and form part of the specification. They are used together with the following detailed description to explain the present invention, but do not constitute a limitation thereof. In the drawings:

[0018] Figure 1 This is a schematic diagram of the overall structure of a preferred embodiment of the pressing component of a riveting machine;

[0019] Figure 2 This is a front view structural schematic diagram of a preferred embodiment of the pressing component of a riveting machine;

[0020] Figure 3 yes Figure 2 A schematic diagram of the AA cross-sectional structure;

[0021] Figure 4 yes Figure 3 A schematic diagram of the BB cross-sectional structure.

[0022] Explanation of reference numerals in the attached figures

[0023] 201-Cylinder adapter flange post; 202-Electric cylinder connecting sleeve; 203-Cylinder liner fixing flange; 204-Negative pressure port; 205-Cylinder liner; 206-Lower air connection port; 207-Positioning sleeve; 208-Lower pressure rod; 209-Connecting piece; 210-Upper cylinder piston; 211-Second seal; 212-Negative pressure air passage; 213-Negative pressure channel; 214-Insertion hole; 215-Plug; 216-Insertion post; 217-Protruding post; 218-First seal; 219-Inflation / discharge chamber; 220-Fourth seal; 221-Opening groove; 222-Third seal; 223-Upper air connection port; 224-Gap. Detailed Implementation

[0024] The specific embodiments of this utility model will be described in detail below with reference to the accompanying drawings. It should be understood that the specific embodiments described herein are for illustration and explanation only and are not intended to limit the scope of this utility model.

[0025] In this utility model, unless otherwise stated, directional terms such as "up, down, left, right, front, back, inside, outside" in the terminology only represent the orientation of the term in its conventional use or are common terms understood by those skilled in the art, and should not be regarded as a limitation on the term.

[0026] See Figure 1-4 The riveting machine pressing assembly shown includes a cylinder adapter flange post 201, a cylinder liner fixing flange 203 connected to the lower end of the cylinder adapter flange post 201, and a cylinder liner 205 connected to the lower end of the cylinder liner fixing flange 203. A negative pressure channel 213 is provided inside the cylinder liner fixing flange 203, and a negative pressure port 204 communicating with the negative pressure channel 213 is provided on the outside of the cylinder liner fixing flange 203. A pressing rod 208 is installed at the center of the bottom of the cylinder liner fixing flange 203, and the center of the pressing rod 208 is provided with a connection to the negative pressure channel 213. A negative pressure air passage 212 is connected. The lower end of the lower pressure rod 208 protrudes from the lower surface of the cylinder liner 205. An upper cylinder piston 210 is sleeved inside the charging and discharging chamber 219 of the cylinder liner 205 outside the lower pressure rod 208. A positioning sleeve 207 that slides with the lower pressure rod 208 is provided at the bottom of the upper cylinder piston 210. A lower air inlet port 206 that communicates with the bottom of the charging and discharging chamber 219 is provided on the outside of the cylinder liner 205. An upper air inlet port 223 that communicates with the top of the charging and discharging chamber 219 is provided on the side of the cylinder liner fixing flange 203.

[0027] By implementing the above technical solution, during operation, compressed air is first injected into the upper part of the charging and discharging chamber 219 through the upper air inlet port 223, and the air is recovered through the lower air inlet port 206. At this time, the piston 210 of the upper cylinder moves down, and the positioning sleeve 207 extends, so that a positioning channel is formed in the middle. Then, the negative pressure device connected to the negative pressure port 204 creates a negative pressure in the negative pressure channel 213, and the rivet is placed into the positioning channel. The negative pressure in the negative pressure channel 213 adsorbs the rivet. At this time, compressed air is injected into the lower part of the charging and discharging chamber 219 through the lower air inlet port 206, and the air is recovered through the upper air inlet port 223, pushing the piston 210 of the upper cylinder up and exposing the rivet. At this time, the position of the rivet is aligned with the lower pressure rod 208. Then, the electric cylinder connected to the cylinder adapter flange column 201 drives the lower pressure assembly of the riveting machine to move the rivet down as a whole, and rivets the rivet onto the workpiece. The riveting machine's pressing assembly has a locating sleeve 207 that can slide relative to the pressing rod 208. When the rivet is attracted, it can help position the rivet, so that the rivet can be aligned with the center of the pressing rod 208, thereby improving the riveting accuracy and product quality.

[0028] In this embodiment, a socket 214 is provided at the lower center of the cylinder adapter flange 201, and a pin 216 is provided at the upper center of the cylinder liner fixing flange 203, which is inserted into and pinned to the socket 214. The negative pressure channel 213 extends into the pin 216. A pin hole is provided on the side of the cylinder adapter flange 201, and a pin is provided in the pin hole, which is pressed into the recess on the side of the pin 216. The pin is used to pin the pin 216, which facilitates the disassembly of the cylinder adapter flange 201 and the cylinder liner fixing flange 203. The insertion of the pin 216 into the socket 214 extends the negative pressure channel 213 into the pin 216, which facilitates negative pressure control.

[0029] In this embodiment, the upper end of the insert 216 is provided with an opening groove 221, and a plug 215 is screwed into the opening groove 221. The negative pressure channel 213 extends upward into the opening groove 221 and communicates with the opening groove 221. The negative pressure channel 213 is vertically arranged along the axis inside the cylinder liner fixing flange 203. The use of the plug 215 facilitates opening the negative pressure channel 213, making it easy to unclog and clean the inside of the negative pressure channel 213.

[0030] In this embodiment, the lower end of the cylinder liner fixing flange 203 is provided with a protrusion 217 that inserts into the upper port of the charging / discharging chamber 219, and the top surface of the cylinder liner 205 is embedded with a first seal 218. With this arrangement, the protrusion is used for centering, and after centering, screws are threaded circumferentially from top to bottom through the flange face of the cylinder liner fixing flange 203 and then screwed into the threaded hole on the upper end face of the cylinder liner 205, thus achieving fixation.

[0031] In this embodiment, a vertical groove is provided at the center of the protruding post 217. The upper end of the pressing rod 208 is pressed and fixed in the vertical groove, and the lower end of the negative pressure channel 213 extends into the vertical groove and communicates with the negative pressure air passage 212. This arrangement facilitates the installation of the pressing rod 208 at the bottom center of the cylinder liner fixing flange 203. The upper end of the pressing rod 208 and the vertical groove are press-fitted together, connecting the two by press fitting. In addition, the protruding post is also provided with an airflow channel connecting the upper air inlet port 223 and the upper part of the charging / discharging chamber 219.

[0032] In this embodiment, to further enhance sealing, a second seal 211 is provided on the outer side of the upper cylinder piston 210, which is in sealing contact with the inner wall of the filling and discharging chamber 219.

[0033] In this embodiment, to further enhance sealing, a third seal 222 is provided on the inner side of the upper cylinder piston 210, which is in sealing contact with the outer wall of the lower pressure rod 208.

[0034] In this embodiment, to further enhance sealing, the inner wall of the lower end shaft hole of the cylinder liner 205 is provided with a fourth seal 220 that is in sealing contact with the positioning sleeve 207.

[0035] Preferably, an electric cylinder connecting sleeve 202 is integrally provided on the upper end of the cylinder adapter flange column 201, and a connector 209 is inserted into the electric cylinder connecting sleeve 202.

[0036] The upper end of the electric cylinder connecting sleeve 202 is provided with a T-shaped socket that runs through the front and rear, and the bottom of the corresponding connector 209 is provided with a T-shaped block that can be inserted into the T-shaped socket. The upper end of the connector 209 is connected to the electric cylinder that drives the cylinder adapter flange column 201 to move up and down as a whole.

[0037] The preferred embodiments of the present invention have been described in detail above with reference to the accompanying drawings. However, the present invention is not limited to the specific details of the above embodiments. Within the scope of the technical concept of the present invention, various simple modifications can be made to the technical solution of the present invention, and these simple modifications all fall within the protection scope of the present invention.

[0038] It should also be noted that the various specific technical features described in the above specific embodiments can be combined in any suitable way without contradiction. In order to avoid unnecessary repetition, this utility model will not describe the various possible combinations separately.

[0039] Furthermore, various different embodiments of this utility model can be combined in any way, as long as they do not violate the spirit of this utility model, they should also be regarded as the content disclosed by this utility model.

Claims

1. A pressing assembly for a riveting machine, characterized in that, It includes a cylinder adapter flange (201), a cylinder liner fixing flange (203) connected to the lower end of the cylinder adapter flange (201), and a cylinder liner (205) connected to the lower end of the cylinder liner fixing flange (203). A negative pressure channel (213) is provided inside the cylinder liner fixing flange (203), and a negative pressure port (204) communicating with the negative pressure channel (213) is provided on the outside of the cylinder liner fixing flange (203). A pressure rod (208) is installed at the center of the bottom of the cylinder liner fixing flange (203). The lower pressure rod (208) has a negative pressure air passage (212) at its center that communicates with the negative pressure channel (213). The lower end of the lower pressure rod (208) protrudes from the lower surface of the cylinder liner (205). An upper cylinder piston (210) is sleeved in the filling and discharging chamber (219) of the cylinder liner (205) outside the lower pressure rod (208). A positioning sleeve (207) that slides with the lower pressure rod (208) is provided at the bottom of the upper cylinder piston (210). The cylinder liner (205) has a lower air inlet (206) that communicates with the bottom of the filling and discharging chamber (219) on its outer side, and the cylinder liner fixing flange (203) has an upper air inlet (223) that communicates with the top of the filling and discharging chamber (219) on its side.

2. The pressing assembly of the riveting machine according to claim 1, characterized in that, The cylinder adapter flange column (201) has an insertion hole (214) at the center of its lower end; The cylinder liner fixing flange (203) is provided with a plug (216) at the upper center position, which is inserted into and pinned to the plug hole (214), and the negative pressure channel (213) extends into the plug (216).

3. The pressing assembly of the riveting machine according to claim 2, characterized in that, The upper end of the insert (216) is provided with an opening groove (221); A plug (215) is screwed into the opening groove (221), and the negative pressure channel (213) extends upward into the opening groove (221) and communicates with the opening groove (221).

4. The pressing assembly of the riveting machine according to claim 1, characterized in that, The lower end of the cylinder liner fixing flange (203) is provided with a protrusion (217) that is inserted into the upper port of the charging / discharging chamber (219), and the top surface of the cylinder liner (205) is inlaid with a first seal (218).

5. The pressing assembly of the riveting machine according to claim 4, characterized in that, The center of the protruding post (217) is provided with a vertical groove, the upper end of the pressing rod (208) is pressed into and fixed in the vertical groove, and the lower end of the negative pressure channel (213) extends into the vertical groove and communicates with the negative pressure airway (212).

6. The pressing assembly of the riveting machine according to claim 1, characterized in that, The outer side of the upper cylinder piston (210) is fitted with a second seal (211) that is in sealing contact with the inner wall of the filling and discharging chamber (219).

7. The pressing assembly of the riveting machine according to claim 1, characterized in that, The inner side of the upper cylinder piston (210) is provided with a third seal (222) that is in sealing contact with the outer wall of the lower pressure rod (208).

8. The pressing assembly of the riveting machine according to claim 1, characterized in that, The inner wall of the lower end shaft hole of the cylinder liner (205) is provided with a fourth seal (220) that is in sealing contact with the positioning sleeve (207).

9. The pressing assembly of the riveting machine according to claim 1, characterized in that, The upper end of the cylinder adapter flange column (201) is integrally provided with an electric cylinder connecting sleeve (202), and a connector (209) is inserted into the electric cylinder connecting sleeve (202).

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