Press-fit assembly equipment for thin-wall high-pressure-resistant embedded ring and easy-open lid surface

Abstract

The invention discloses a thin-wall high-pressure-resistant embedded ring and easy-open lid surface press-fit assembling device which comprises a material conveying mechanism and a press-fit correcting mechanism, the material conveying mechanism comprises a workbench, and an annular frame is fixedly installed at the top of the workbench through a fixing base; the bottom of an inner cavity of the annular frame is fixedly provided with a bearing annular table through a support. According to the press-fit assembling equipment for the thin-wall high-pressure-resistant embedded ring and the easy-to-pull cover surface, an arc-shaped pressing seat is mounted on the left side of the inner side of an annular frame and is matched with an arc-shaped plate, a three-point type inserting plate and a first spring for use, and through the arrangement of the structures, when a steering table rotates, the pressing seat can be rotated by rotating the steering table; the arc-shaped pressing base extrudes the arc-shaped plate, so that the three-point type inserting plate penetrates through the drawing and inserting opening to be inserted into the inner side of the pressing groove, the three-point type inserting plate is located at the top of the easy-open lid body, and then the pull ring piece is accurately and positively installed on the driving surface of the rivet island through a groove formed by the three-point type inserting plate.

Description

Technical Field

[0001] This invention relates to the field of easy-open lid pressing technology, specifically to a pressing and assembly device for a thin-walled, high-pressure resistant insert ring and an easy-open lid surface. Background Technology

[0002] Easy-open lids, also known as pull-tab lids, are mainly made of aluminum or tinplate. They are opened by pre-etched lines and riveted pull rings. They are suitable for sealing containers such as iron cans, aluminum cans, and composite cans in the food, beverage, and daily chemical industries. The product is divided into round and non-round types. The production process covers basic lid forming, pull ring assembly, and other stages. It adopts a structural design with low interchangeability and special equipment. It also has anti-counterfeiting features and has properties such as moisture resistance, shock resistance, and high temperature resistance.

[0003] The assembly of the easy-open lid and the insert ring (pull ring component) is a precision automated process involving stamping and riveting. The core principle is to use the lid's own substrate to stamp rivet islands, then precisely fit the insert ring and press it together to deform the rivet island material, achieving permanent fixation between the insert ring and the lid. The specific steps are: first, rivet islands are formed by directly stamping protrusions from the aluminum substrate of the easy-open lid; then, the center hole of the insert ring (pull ring component) is aligned with the rivet island and fitted; finally, the upper die presses down to force the rivet island material upwards and through the insert ring hole, forming a rivet post to complete the riveting fixation.

[0004] While existing easy-open lid pressing and assembly equipment can complete the above basic operations, it still has many technical defects in the pressing and assembly process of thin-walled high-pressure resistant inserts and easy-open lid surfaces, specifically:

[0005] 1. Low positioning accuracy of the insert ring: When the insert ring is fitted onto the surface of the rivet island, there is a lack of precise limiting and guiding structure. It is mostly placed roughly by manual experience or simple tooling, which cannot guarantee the coaxiality between the center hole of the insert ring and the rivet island. This can easily lead to the insert ring being skewed or misaligned. After subsequent pressing, problems such as the pull ring getting stuck and uneven force on the scoring line may occur, which seriously affects the performance of the easy-open cover.

[0006] 2. No secondary correction structure before pressing: The existing equipment only presses directly through the mold during the pressing stage, without performing secondary precise correction on the fitted ring. The fitted ring is prone to displacement due to vibration, centrifugal force and other factors during material transmission, which further reduces the pressing and assembly accuracy.

[0007] 3. Low level of automation: The processes of material feeding, pressing triggering, and unloading lack linkage control. After pressing, manual or separate control of the drive components is required to achieve material transfer. Furthermore, the extension and retraction of the embedded ring limiting structure does not coordinate with the material transfer, resulting in low overall processing efficiency and high manual intervention costs.

[0008] 4. Poor pressing stability of thin-walled parts: For thin-walled high-pressure resistant inserts, the substrate is thin and the structural strength is low. Existing pressing equipment lacks flexible pressing and clamping structures. Problems such as insert deformation and cover surface depression are prone to occur during the pressing process, which affects the product yield.

[0009] Based on the shortcomings of the existing technology, a pressing and assembly device for thin-walled high-pressure resistant insert rings and easy-open lids is designed to achieve precise positioning, secondary correction, and automated linkage transmission of the insert rings, in order to solve the technical problems of low pressing accuracy, poor automation, and low product yield of the existing equipment. Summary of the Invention

[0010] To address the shortcomings of existing technologies, this invention provides a pressing and assembly device for thin-walled, high-pressure resistant insert rings and easy-open lid covers, solving the problem of inaccurate pressing of existing insert rings.

[0011] To achieve the above objectives, the present invention provides the following technical solution: a pressing and assembly device for a thin-walled, high-pressure resistant insert ring and an easy-open lid cover, comprising a material conveying mechanism and a pressing and straightening mechanism. The material conveying mechanism includes a worktable, on the top of which an annular frame is fixedly mounted via a fixed seat. A supporting ring platform is fixedly mounted at the bottom of the inner cavity of the annular frame via a bracket. An arc-shaped guide groove is formed on the inner side of the supporting ring platform, and a sliding guide block is slidably mounted on the inner side of the arc-shaped guide groove. Several sliding guide blocks are provided. A steering platform is fixedly installed between the top ends of the sliding guide blocks. The top of the steering platform has a pressing groove, and there are several pressing grooves. The bottom of the pressing groove is in contact with the top of the supporting ring platform. A motor is fixedly installed at the bottom of the worktable by a bracket. The output shaft of the motor is fixedly connected to a rotating rod by a coupling. The top end of the rotating rod passes through the worktable and extends to the inside of the worktable. One end of the rotating rod extending into the worktable is fixedly connected to the bottom of the steering platform. The pressing and straightening mechanism is installed on the top of the worktable.

[0012] Preferably, the worktable and the support ring are provided with a discharge port extending to the bottom on the right side of the top. The two sides, front and rear of the turning table are fixedly connected with spring rods, and several sets of spring rods are arranged in pairs. An arc-shaped plate is slidably installed on the surface of each set of spring rods, and a first spring is sleeved on the surface of the spring rod between the turning table and the arc-shaped plate.

[0013] Preferably, the inner wall of the pressing groove and the side near the rebound rod are provided with a pull-in port, and the side of the bow plate near the turntable is fixedly connected with a three-point insert plate that cooperates with the pull-in port, and one end of the three-point insert plate extends to the inner side of the pull-in port.

[0014] Preferably, an arc-shaped pressure seat that mates with an arc-shaped plate is fixedly connected to the left side of the inner cavity of the annular frame. An inner guide groove is provided on one side of the arc-shaped pressure seat, and one end of the rebound rod extends to the inner side of the inner guide groove. The arc-shaped pressure seat contacts the arc-shaped plate. A material discharge frame that mates with a discharge port is fixedly installed at the bottom of the workbench. A protective baffle that mates with the annular frame is fixedly connected to the top of the workbench. A circular pressure port that mates with a pressing groove is provided at the top of the protective baffle.

[0015] Preferably, an easy-open cover body is provided on the inner side of the pressing groove, a rivet island is provided on the top of the easy-open cover body, and a pull ring is sleeved on the surface of the rivet island.

[0016] Preferably, the pressing and straightening mechanism includes a bending frame, which is fixedly installed on the top of the workbench by a fixing block. A cylinder is fixedly installed on the top of the bending frame through an opening. A convex seat is fixedly connected to the bottom end of the cylinder. A pressure rod is fixedly installed on the inner side of the convex seat. A circular pressure cylinder that cooperates with the rivet island and the pull ring is slidably installed on the surface of the pressure rod. A pressing head that cooperates with the rivet island is fixedly connected to the bottom end of the pressure rod.

[0017] Preferably, a rectangular frame is fixedly connected to the rear of the cylindrical pressure cylinder, and a transverse rod is fixedly connected to the upper and lower parts between the two sides of the inner cavity of the rectangular frame. A straightening rod that cooperates with the easy-open cover body is slidably installed on the surface of the transverse rod, and a second spring is sleeved on the surface of the transverse rod. An arc-head insert plate that cooperates with the L-shaped pressure plate is fixedly connected to the bottom of the convex seat.

[0018] Preferably, a button is fixedly installed at the bottom of the curved frame, and a round-headed pressure rod that cooperates with the button is fixedly installed at the top of the convex seat.

[0019] This invention provides a pressing and assembly device for a thin-walled, high-pressure resistant insert ring and an easy-open lid cover. Compared with existing technologies, it has the following advantages:

[0020] (1) The pressing and assembly equipment for the thin-walled high-pressure resistant insert ring and easy-open cover is used by installing an arc-shaped pressure seat on the left side of the inner side of the ring frame, and using it in conjunction with an arc-shaped plate, a three-point insert plate and a first spring. The configuration of these structures allows the arc-shaped pressure seat to squeeze the arc-shaped plate when the turntable rotates, so that the three-point insert plate passes through the insertion port and is inserted into the inner side of the pressing groove, so that the three-point insert plate is located on the top of the easy-open cover body. Then, the groove formed by the three-point insert plate is used to accurately and positively install the pull ring on the rivet island driving surface. Thus, while completing the pre-installation of the pull ring, it can also ensure that the pull ring will not shift during the rotation displacement, thereby improving the installation accuracy.

[0021] (2) The pressing and assembly equipment for the thin-walled high-pressure resistant insert ring and the easy-open cover is equipped with a circular pressure cylinder and a rectangular frame at the bottom of the bending frame, and is used in conjunction with an arc head insert plate and a convex seat. The structure allows the convex seat to be placed on the surface of the rivet island and press and limit the pull ring during the bending frame descent. Then, the arc head insert plate is used to squeeze the L-shaped pressure plate, causing the two straightening rods to move towards each other to clamp and correct the pull ring for a second time until the pressure rod descends to the bottom and presses the rivet island into a flat state, thereby fixing the pull ring to the top of the easy-open cover body. This effectively ensures that the easy-open cover body and the pull ring are more stable during the pressing and assembly.

[0022] (3) The pressing and assembly equipment for the thin-walled high-pressure resistant insert ring and easy-open cover is used by installing an arc-shaped pressing seat on the left side of the inner cavity of the workbench, and using it in conjunction with a feeding frame, a button and a round-headed pressing rod. The setting of these structures allows the convex seat to complete the pressing and lifting, and the pressing of the button to drive the motor, so that the turntable can drive the pull ring part to achieve automated feeding. In addition, during the rotation, the three-point insertion plate can be extended and limited to ensure that the pull ring part can be placed more accurately. After the pressing is completed, the feeding frame can be used to automatically feed the material, which improves the pressing efficiency and quality of the equipment during operation. Attached Figure Description

[0023] Figure 1 This is a schematic diagram of the structure of the present invention;

[0024] Figure 2 This is a bottom view of the material transfer mechanism and pressing and straightening mechanism structure of the present invention;

[0025] Figure 3 This is a schematic diagram of the material transfer mechanism structure of the present invention;

[0026] Figure 4 This is a top view of the internal structure of the annular frame of the present invention;

[0027] Figure 5 For the present invention Figure 4 A magnified view of a section at point A in the middle;

[0028] Figure 6 This is a schematic diagram of the rebound rod, bow-shaped plate, and first spring structure of the present invention;

[0029] Figure 7 This is a schematic diagram of the workbench, annular frame, and supporting annular platform structure of the present invention.

[0030] Figure 8 This is a cross-sectional view of the workbench and annular frame structure of the present invention;

[0031] Figure 9 This is a schematic diagram of the pressing and straightening mechanism structure of the present invention;

[0032] Figure 10 This is a schematic diagram of the pressure rod, circular pressure cylinder, and rectangular frame structure of the present invention;

[0033] Figure 11 This is a cross-sectional view of the rectangular frame structure of the present invention.

[0034] In the diagram: 1. Material conveying mechanism; 2. Pressing and straightening mechanism; 3. Easy-open cover body; 4. Rivet island; 5. Pull ring component; 101. Workbench; 102. Annular frame; 103. Support ring platform; 104. Arc-shaped guide groove; 105. Sliding guide block; 106. Turning platform; 107. Pressing groove; 108. Motor; 109. Rotating rod; 110. Discharge port; 111. Rebound rod; 112. Bow-shaped plate; 113. First spring; 114. Pull-out port; 115. Three 116. Point-type insert plate; 117. Arc-shaped pressure seat; 118. Inner guide groove; 119. Material feeding frame; 120. Protective baffle; 201. Circular pressure port; 202. Bent frame; 203. Cylinder; 204. Convex seat; 205. Pressure rod; 206. Circular pressure cylinder; 207. Rectangular frame; 208. Horizontal rod; 209. L-shaped pressure plate; 210. Correcting rod; 211. Second spring; 212. Arc-head insert plate; 213. Button; 214. Circular head pressure rod; 215. Pressing head. Detailed Implementation

[0035] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0036] Please see Figures 1-11 The present invention provides a technical solution: a pressing and assembly device for a thin-walled high-pressure resistant insert ring and an easy-open lid, comprising a material conveying mechanism 1 and a pressing and straightening mechanism 2;

[0037] Please refer to Figure 3 , Figure 4 , Figure 5 , Figure 6 , Figure 7 and Figure 8The diagram illustrates the overall structure of the material conveying mechanism 1. The material conveying mechanism 1 includes a workbench 101. An annular frame 102 is fixedly mounted on the top of the workbench 101 via a fixed base. A supporting ring platform 103 is fixedly mounted on the bottom of the inner cavity of the annular frame 102 via a bracket. An arc-shaped guide groove 104 is formed on the inner side of the supporting ring platform 103. Several sliding guide blocks 105 are slidably mounted on the inner side of the arc-shaped guide groove 104. A turning platform 106 is fixedly mounted between the tops of the several sliding guide blocks 105. A pressing groove 1 is formed on the top of the turning platform 106. 07, and several pressing grooves 107 are provided. The bottom of the pressing groove 107 is in contact with the top of the supporting ring platform 103. The bottom of the worktable 101 is fixedly installed with a motor 108 by a bracket. The motor 108 is a servo motor. The output shaft of the motor 108 is fixedly connected to a rotating rod 109 by a coupling. The top end of the rotating rod 109 passes through the worktable 101 and extends to the inside of the worktable 101. One end of the rotating rod 109 extending into the inside of the worktable 101 is fixedly connected to the bottom of the turntable 106. The pressing and straightening mechanism 2 is installed on the top of the worktable 101.

[0038] The top right side of the workbench 101 and the support ring 103 are provided with a discharge port 110 that extends to the bottom. The two sides, front and rear of the turntable 106 are fixedly connected with spring rods 111, and several sets of spring rods 111 are arranged in pairs. Each set of spring rods 111 has an arc-shaped plate 112 slidably installed on its surface. A first spring 113 is sleeved on the surface of the spring rod 111 and between the turntable 106 and the arc-shaped plate 112.

[0039] A insertion port 114 is provided on the inner wall of the pressing groove 107 near the rebound rod 111. A three-point insert plate 115, which mates with the insertion port 114, is fixedly connected to the side of the arc-shaped plate 112 near the turntable 106. The three-point insert plate 115 consists of three limiting plates, which can limit the installation of the pull ring 5. One end of the three-point insert plate 115 extends to the inner side of the insertion port 114. An arc-shaped pressure seat 116, which mates with the arc-shaped plate 112, is fixedly connected to the left side of the inner cavity of the annular frame 102. An inner guide groove 117 is provided on one side of the arc-shaped pressure seat 116, and the rebound rod 111... One end of the rod 111 extends to the inner side of the inner guide groove 117. The arc-shaped pressure seat 116 contacts the bow-shaped plate 112. The bottom of the workbench 101 is fixedly installed with a feeding frame 118 that cooperates with the discharge port 110. The top of the workbench 101 is fixedly connected with a protective baffle 119 that cooperates with the ring frame 102. The top of the protective baffle 119 is provided with a round pressure port 120 that cooperates with the pressing groove 107. The inner side of the pressing groove 107 is provided with an easy-open cover body 3. The top of the easy-open cover body 3 is provided with a rivet island 4. The surface of the rivet island 4 is fitted with a pull ring 5.

[0040] Please refer to Figure 9 , Figure 10 and Figure 11 The overall structure of the pressing and straightening mechanism 2 is shown. The pressing and straightening mechanism 2 includes a bending frame 201, which is fixedly installed on the top of the workbench 101 by a fixing block. A cylinder 202 is fixedly installed on the top of the bending frame 201 through an opening. A convex seat 203 is fixedly connected to the bottom end of the cylinder 202. A pressure rod 204 is fixedly installed on the inner side of the convex seat 203. A circular pressure cylinder 205 that cooperates with the rivet island 4 and the pull ring 5 is slidably installed on the surface of the pressure rod 204. A pressing head 214 that cooperates with the rivet island 4 is fixedly connected to the bottom end of the pressure rod 204.

[0041] A rectangular frame 206 is fixedly connected to the rear of the cylindrical pressure cylinder 205. A transverse rod 207 is fixedly connected to the upper and lower parts between the two sides of the inner cavity of the rectangular frame 206. A straightening rod 209 that is used in conjunction with the easy-open cover body 3 is slidably installed on the surface of the transverse rod 207. A second spring 210 is sleeved on the surface of the transverse rod 207. An arc head insert plate 211 that is used in conjunction with the L-shaped pressure plate 208 is fixedly connected to the bottom of the convex seat 203.

[0042] A button 212 is fixedly installed at the bottom of the curved frame 201, and a round-headed pressure rod 213 that mates with the button 212 is fixedly installed at the top of the convex seat 203.

[0043] In use, the operator stands at the front of the workbench 101 and manually places several easy-open cover bodies 3 inside the pressing groove 107 at the front. Then, the motor 108 is started, and the rotating rod 109 drives the steering table 106 to rotate clockwise. While the steering table 106 is limited by the sliding guide block 105, the rebound rod 111 passes through the inner guide groove 117, and then the arc-shaped pressure seat 116 presses the bow-shaped plate 112. At this time, the bow-shaped plate 112 is pushed by the arc-shaped pressure seat 116 to push the three-point insert plate 115 through the insertion port 114 and extend to the inside of the pressing groove 107. The three-point insert plate 115 is located on top of the easy-open cover body 3. Then, the operator places the pull ring 5 on top of the easy-open cover body 3 inside the left pressing groove 107, so that the pull ring 5 is fitted onto the surface of the rivet island 4. Due to the limiting effect of the three-point insert plate 115, the pull ring 5 can be accurately and positively installed on the surface of the rivet island 4. Then, the motor 108 drives the turntable 106 to continue rotating. When the easy-open cover body 3 moves to the bottom of the convex seat 203, it stops. At this time, the arc-shaped plate 112 separates from the arc-shaped pressure seat 116. Then, the first spring 113 uses its elastic force to push the three-point insert plate 115 and the arc-shaped pressure seat 116. As the shaped plate 112 moves back out of the inner side of the pressing groove 107, the cylinder 202 starts and pushes the convex seat 203 down. First, the round pressure cylinder 205 will be inserted into the surface of the rivet island 4, and the round pressure cylinder 205 will also press down the pull ring 5. At the same time, the two straightening rods 209 are located on both sides of the pull ring 5. As the convex seat 203 continues to descend, the two arc-head insert plates 211 are inserted into the inner side of the rectangular frame 206. Then, the arc-head insert plates 211 squeeze the L-shaped pressure plate 208, which drives the two straightening rods 209 to clamp the pull ring 5, thereby completing the secondary straightening of the pull ring 5. As the convex seat 203 continues to descend until the pressing head... 214 Press the rivet island 4 to flatten it and fix the pull ring 5. At this time, the installation of the easy-open cover body 3 and the pull ring 5 is completed. When the cylinder 202 pulls the convex seat 203 to rise, the convex seat 203 drives the round pressure cylinder 205 to rise until the round head pressure rod 213 rises and presses the arc head insert plate 211. After the arc head insert plate 211 is pressed, the motor 108 is started. Then the motor 108 drives the turntable 106 to rotate clockwise once until the pressing groove 107 rotates to the discharge port 110. The pressed easy-open cover body 3 slides out through the discharge port 110 and the unloading frame 118.

[0044] Furthermore, any content not described in detail in this specification is existing technology known to those skilled in the art.

Claims

1. A pressing and assembly device for a thin-walled, high-pressure resistant insert ring and an easy-open lid, comprising a material conveying mechanism (1) and a pressing and straightening mechanism (2), characterized in that: The material conveying mechanism (1) includes a workbench (101). A ring frame (102) is fixedly installed on the top of the workbench (101) via a fixed seat. A supporting ring platform (103) is fixedly installed on the bottom of the inner cavity of the ring frame (102) via a bracket. An arc-shaped guide groove (104) is provided on the inner side of the supporting ring platform (103). A sliding guide block (105) is slidably installed on the inner side of the arc-shaped guide groove (104). Several sliding guide blocks (105) are provided. A turning platform (106) is fixedly installed between the top ends of several sliding guide blocks (105). A pressing groove (107) is provided on the top of the turning platform (106). The pressing groove (107) is provided in several ways. The bottom of the pressing groove (107) is in contact with the top of the supporting ring platform (103). The bottom of the worktable (101) is fixedly installed with a motor (108) by a bracket. The output shaft of the motor (108) is fixedly connected to a rotating rod (109) by a coupling. The top of the rotating rod (109) passes through the worktable (101) and extends to the inside of the worktable (101). One end of the rotating rod (109) extending into the inside of the worktable (101) is fixedly connected to the bottom of the turntable (106). The pressing and straightening mechanism (2) is installed on the top of the worktable (101).

2. The pressing and assembly equipment for a thin-walled high-pressure resistant insert ring and an easy-open lid surface according to claim 1, characterized in that: The workbench (101) and the support ring (103) are both provided with a discharge port (110) extending to the bottom on the right side of the top. The turntable (106) is fixedly connected with rebound rods (111) on both sides, as well as the front and rear. Several sets of rebound rods (111) are arranged in pairs. A bow-shaped plate (112) is slidably installed on the surface of each set of rebound rods (111). A first spring (113) is sleeved on the surface of the rebound rod (111) and between the turntable (106) and the bow-shaped plate (112).

3. The pressing and assembly equipment for a thin-walled high-pressure resistant insert ring and an easy-open lid surface according to claim 2, characterized in that: The inner wall of the pressing groove (107) and the side near the rebound rod (111) are provided with a pull-in port (114). The side of the bow plate (112) near the turntable (106) is fixedly connected with a three-point insert plate (115) that is used in conjunction with the pull-in port (114), and one end of the three-point insert plate (115) extends to the inside of the pull-in port (114).

4. The pressing and assembly equipment for a thin-walled high-pressure resistant insert ring and an easy-open lid surface according to claim 3, characterized in that: An arc-shaped pressure seat (116) for use with an arc-shaped plate (112) is fixedly connected to the left side of the inner cavity of the annular frame (102). An inner guide groove (117) is provided on one side of the arc-shaped pressure seat (116), and one end of the rebound rod (111) extends to the inner side of the inner guide groove (117). The arc-shaped pressure seat (116) is in contact with the arc-shaped plate (112). A feeding frame (118) for use with a discharge port (110) is fixedly installed at the bottom of the workbench (101). A protective baffle (119) for use with the annular frame (102) is fixedly connected to the top of the workbench (101). A circular pressure port (120) for use with a pressing groove (107) is provided at the top of the protective baffle (119).

5. The pressing and assembly equipment for a thin-walled high-pressure resistant insert ring and an easy-open lid surface according to claim 4, characterized in that: The inner side of the pressing groove (107) is provided with an easy-open cover body (3), the top of the easy-open cover body (3) is provided with a rivet island (4), and the surface of the rivet island (4) is fitted with a pull ring (5).

6. The pressing and assembly equipment for a thin-walled high-pressure resistant insert ring and an easy-open lid surface according to claim 5, characterized in that: The pressing and straightening mechanism (2) includes a bending frame (201), and the bending frame (201) is fixedly installed on the top of the workbench (101) by a fixing block. A cylinder (202) is fixedly installed on the top of the bending frame (201) by opening. A convex seat (203) is fixedly connected to the bottom end of the cylinder (202). A pressure rod (204) is fixedly installed on the inner side of the convex seat (203). A circular pressure cylinder (205) that cooperates with the rivet island (4) and the pull ring (5) is slidably installed on the surface of the pressure rod (204). A pressing head (214) that cooperates with the rivet island (4) is fixedly connected to the bottom end of the pressure rod (204).

7. The pressing and assembly equipment for a thin-walled high-pressure resistant insert ring and an easy-open lid surface according to claim 6, characterized in that: A rectangular frame (206) is fixedly connected to the rear of the cylindrical pressure cylinder (205). A transverse rod (207) is fixedly connected to the upper and lower parts of the inner cavity of the rectangular frame (206). A straightening rod (209) that works with the easy-open cover body (3) is slidably installed on the surface of the transverse rod (207). A second spring (210) is sleeved on the surface of the transverse rod (207). An arc-head insert plate (211) that works with the L-shaped pressure plate (208) is fixedly connected to the bottom of the convex seat (203).

8. The pressing and assembly equipment for a thin-walled high-pressure resistant insert ring and an easy-open lid surface according to claim 7, characterized in that: A button (212) is fixedly installed at the bottom of the bent frame (201), and a round-headed pressure rod (213) that cooperates with the button (212) is fixedly installed at the top of the convex seat (203).

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