Water inlet valve diaphragm press fitting device

Abstract

The invention provides a water inlet valve diaphragm press-fitting device, and relates to the technical field of valve diaphragm production, the water inlet valve diaphragm press-fitting device comprises a fixing frame and lifting seats, the lifting seats are connected through a plurality of guide columns, the lower ends of the guide columns are connected with spring columns, a first hydraulic cylinder is arranged on the fixing frame, and second hydraulic cylinders are arranged on the two sides of the first hydraulic cylinder; a rotating mechanism and a flatness detection assembly are arranged on the lifting seat, the flatness detection assembly comprises a plurality of dial indicator measuring instruments, the rotating mechanism comprises a rotating motor, a driving gear and a driven gear, a linkage disc is arranged in the driven gear, and a piston end of the hydraulic cylinder is connected with a press fitting assembly. The device has the beneficial effects that the design is reasonable, the operation is simple, the manufacturing cost is low, the automatic operation of pressing and detecting at the same time is realized, the production process is saved, the pressing plate with the ball pressing head and the floating pressing head is adopted, the pressing quality is improved, defective products are reduced, and the production efficiency is improved.

Description

Technical Field

[0001] The invention mainly relates to the technical field of valve diaphragm production, and in particular to a water inlet valve diaphragm pressing device. Background Art

[0002] As an emergency valve and maintenance valve, the water inlet valve usually has only two working states: fully open or fully closed. It cannot be used to adjust the flow rate. A diaphragm valve is mostly used. The diaphragm is used as the opening and closing part to close the flow channel, cut off the fluid, and separate the inner cavity of the valve body from the inner cavity of the valve cover. The stop valve has the characteristics of simple structure, good sealing and corrosion resistance, and small fluid resistance. The diaphragm is assembled by pressing a diaphragm frame and a diaphragm. The diaphragm is pressed from a natural rubber film, and artificial additives are added to the rubber to improve the chemical resistance and bending performance of the diaphragm.

[0003] The inventor discovered the following defects during the operation of the specific embodiment: In the existing diaphragm pressing process, the edge of the diaphragm is prone to warping, resulting in the undesirable phenomenon of inadequate pressing. The solution is to add a post-pressing inspection process and manually screen out defective products. This method is prone to missed screening, high labor costs and low production efficiency.

[0004] It should be noted that the above contents belong to the technical cognition scope of the inventor. Since the technical contents in this field are vast and too complicated, the above contents of this application do not necessarily constitute prior art. Summary of the invention

[0005] 1. Technical problems to be solved by the invention: The present invention provides a water inlet valve diaphragm press-fitting device, which is used to solve the technical problems existing in the above-mentioned background technology.

[0006] 2. Technical solution: To achieve the above-mentioned purpose, the technical solution provided by the present invention is as follows: a water inlet valve diaphragm press-fitting device, comprising a fixed frame and a lifting seat, the lifting seat is connected by a plurality of guide columns, the lower ends of the plurality of guide columns are connected with spring columns, a hydraulic cylinder 1 is provided on the fixed frame, hydraulic cylinder 2 is provided on both sides of the hydraulic cylinder 1, a rotating mechanism and a flatness detection component are provided on the lifting seat, the flatness detection component comprises a plurality of dial gauges, the rotating mechanism comprises a rotating motor, a driving gear, and a driven gear, a linkage disk is provided in the driven gear, a press-fitting component is connected to the piston end of the hydraulic cylinder 1, the press-fitting component comprises a linkage shaft and a pressure plate, a coupling and a ball bearing are provided on the linkage shaft, the linkage shaft passes through the linkage plate, a plurality of groups of ball pressure heads are provided at the lower end of the pressure plate, a floating pressure head is provided in the middle of the plurality of groups of ball pressure heads, the upper end of the floating pressure head is connected to the pressure plate through a telescopic spring, and the telescopic spring is embedded in the pressure plate.

[0007] Furthermore, the plurality of groups of ball pressing heads are embedded in the pressure plate through waist-shaped grooves, and positioning holes are provided between the plurality of groups of ball pressing heads.

[0008] Furthermore, the dial indicator measuring instrument includes a dial, a sleeve and a measuring rod, the sleeve is provided with an external thread, and the sleeve and the measuring rod pass through the positioning hole.

[0009] Furthermore, a through hole corresponding to the linkage shaft is provided on the linkage disk, and a plurality of adjustment slots corresponding to the dial indicator measuring instrument are provided around the through hole. The sleeve passes through the adjustment slot and is fixedly connected to the linkage disk through a locking nut.

[0010] Furthermore, a clamping block is provided on the linkage shaft, and the clamping block is matched with the through hole.

[0011] Furthermore, the driven gear is a half gear, the driven gear is meshed and connected with the driving gear, and the driven gear and the driving gear are both embedded in the lifting seat.

[0012] Furthermore, one end of the piston rod of the hydraulic cylinder 1 is connected to the coupling, and the lower end of the coupling is connected to the ball bearing.

[0013] Furthermore, one end of the piston rod of the two hydraulic cylinders 2 is fixedly connected to the lifting seat.

[0014] 3. Beneficial effects: Compared with the prior art, the technical solution provided by the present invention has the following beneficial effects: The invention has reasonable design, simple operation, low manufacturing cost, realizes automatic operation of pressing and testing at the same time, saves production process, and adopts a pressing plate with a ball pressing head and a floating pressing head to improve the pressing quality, reduce the generation of defective products, and improve production efficiency. By arranging a combined structure of a floating pressure head and multiple groups of ball pressure heads on the pressure plate, the edge of the diaphragm can be squeezed at multiple points and the local stress points can be increased, thereby further ensuring the smooth pressing between the edge of the diaphragm and the diaphragm frame; By setting up a gear-type rotary drive structure, the linkage disk is driven to rotate smoothly, achieving high-precision, low-speed and smooth motion transmission, ensuring the detection accuracy of the dial indicator measuring instrument, and realizing online flatness detection, so as to facilitate timely removal of unqualified products.

[0015] It should be noted that the structures not introduced in the present invention are the same as the prior art or can be implemented by using the prior art, and are not described in detail here because they do not involve the design points and improvement directions of the present invention. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1It is a schematic diagram of the overall structure of the present invention; Figure 2 It is a schematic diagram of the overall structure of the present invention from another angle; Figure 3 It is a schematic diagram of the local structure of the present invention; Figure 4 Another partial structural schematic diagram of the present invention; Figure 5 It is a schematic diagram of the pressure plate structure of the present invention.

[0017] Reference numerals: 1. Fixed frame; 2. Lifting seat; 3. Guide column; 4. Hydraulic cylinder 1; 5. Hydraulic cylinder 2; 6. Rotating mechanism; 601. Rotating motor; 602. Driving gear; 603. Driven gear; 604. Linkage plate; 6041. Through hole; 6042. Adjustment slot; 6043. Locking nut; 7. Flatness detection assembly; 701. Dial indicator; 7011. Dial; 7012. Bushing; 7013. Measuring rod; 8. Press-fit assembly; 801. Linkage shaft; 8011. Block; 802. Pressure plate; 8021. Ball pressure head; 8022. Floating pressure head; 8023. Telescopic spring; 8024. Positioning hole; 803. Coupling; 804. Ball bearing; 9. Spring column. DETAILED DESCRIPTION

[0018] To facilitate understanding of the present invention, the present invention will be described more comprehensively below with reference to the relevant drawings. Several embodiments of the present invention are shown in the drawings. However, the present invention can be implemented in many different forms and is not limited to the embodiments described herein. On the contrary, the purpose of providing these embodiments is to make the disclosure of the present invention more thorough and comprehensive.

[0019] In the description of the present invention, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "page", "bottom", "inside", "outside", "clockwise", "counterclockwise" and the like indicating orientations or positional relationships are based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the referred device or element must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as limiting the present invention.

[0020] In addition, the terms "first" and "second" are used for descriptive purposes only and should not be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features defined as "first" and "second" may explicitly or implicitly include one or more of the features. In the description of the present invention, the meaning of "plurality" is two or more, unless otherwise clearly and specifically defined.

[0021] In the present invention, unless otherwise clearly specified and limited, the terms "installed", "connected", "connected", "fixed", "provided with", "provided on" and the like should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be an indirect connection through an intermediate medium, or it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0022] Example: See attached Figure 1-5 A water inlet valve diaphragm press-fitting device, comprising a fixed frame 1 and a lifting seat 2, the lifting seat 2 is connected by a plurality of guide columns 3, the lower ends of the plurality of guide columns 3 are connected with spring columns 9, a hydraulic cylinder 1 4 is arranged on the fixed frame 1, and hydraulic cylinders 2 5 are arranged on both sides of the hydraulic cylinder 1 4, a rotating mechanism 6 and a flatness detection component 7 are arranged on the lifting seat 2, the flatness detection component 7 includes a plurality of dial gauges 701, the rotating mechanism 6 includes a rotating motor 601, a driving gear 602 and a driven gear 603, and a linkage is arranged inside the driven gear 603 Disk 604, a press-fitting assembly 8 is connected to the piston end of the hydraulic cylinder 4, the press-fitting assembly 8 includes a linkage shaft 801 and a pressure plate 802, the linkage shaft 801 is provided with a coupling 803 and a ball bearing 804, the linkage shaft 801 runs through the linkage disk 604, a plurality of groups of ball pressure heads 8021 are provided at the lower end of the pressure plate 802, a floating pressure head 8022 is provided in the middle of the plurality of groups of ball pressure heads 8021, the upper end of the floating pressure head 8022 is connected to the pressure plate 802 through a telescopic spring 8023, and the telescopic spring 8023 is embedded in the pressure plate 802.

[0023] See attached Figure 1-5The upper end of the pressure plate 802 is connected to the linkage shaft 801, and is connected to one end of the telescopic rod of the hydraulic cylinder 4 through the ball bearing 804 and the coupling 803. The pressure plate 802 can move up and down after being driven by the hydraulic cylinder 4, and the pressure plate 802 can also realize axial rotation with the ball bearing 804 through the linkage shaft 801. Multiple groups of ball pressure heads 8021 are embedded in the pressure plate 802 through waist-shaped grooves and are equidistantly distributed at the edge of the bottom of the pressure plate 802. Multiple balls are used to perform local and multi-point extrusion on the edge of the diaphragm to make the press-fitting more close and prevent warping. The floating pressure head 8022 provides pressure to engage the center of the diaphragm with the diaphragm frame to achieve assembly.

[0024] See attached Figure 1-5 The dial indicator measuring instrument 701 includes a dial 7011, a shaft sleeve 7012 and a measuring rod 7013. The shaft sleeve 7012 has an external thread. The shaft sleeve 7012 and the measuring rod 7013 pass through the positioning hole 8024. The dial indicator measuring instrument 701 can increase or decrease the number of installations according to actual detection needs, and can be adjusted in the adjustment groove 6042 according to the diameter of the diaphragm to be pressed, and the spacing can be changed. The lower end of the dial indicator measuring instrument 701 passes through the adjustment groove 6042 on the linkage disk 604 and the positioning hole 8024 on the pressure plate 802. The dial indicator measuring instrument 701 After passing through the adjustment slot 6042 on the linkage disk 604, it is fixedly connected to the linkage disk 604 through the locking nut 6043. A through hole 6041 corresponding to the linkage shaft 801 is opened on the linkage disk 604. The linkage shaft 801 is arranged to pass through the through hole 6041, so that the pressure plate 802 is placed under the linkage disk 604. After the pressure plate 802 is lifted upward, one end of the measuring rod 7013 of the dial indicator measuring instrument 701 is extended out for easy detection. The flatness of the edge of the diaphragm after press-fitting is measured by the dial indicator measuring instrument 701. If there is warping, the press-fitting is unqualified.

[0025] See attached Figure 1-5 The linkage disk 604 is connected to the driven gear 603, which is a half gear. The driven gear 603 is meshed with the driving gear 602. The driven gear 603 and the driving gear 602 are both embedded in the lifting seat 2. The driving gear 602 is driven by the rotating motor 601 to make a rotational motion, driving the driven gear 603 and the linkage disk 604 to make a rotational motion. A plurality of dial gauges 701 are rotated along the edge of the assembled diaphragm with the rotation of the linkage disk 604. A block 8011 is provided on the linkage shaft 801. The block 8011 is matched with the through hole 6041. When the lifting seat 2 drives the linkage disk 604 to descend to a height where the through hole 6041 is connected to the block 8011, after the through hole 6041 and the block 8011 are matched, the linkage shaft 801 can rotate with the linkage disk 604.

[0026] See attached Figure 1-5One end of the piston rod of hydraulic cylinder 4 is connected to the coupling 803, and the lower end of the coupling 803 is connected to the ball bearing 804. The piston rod of hydraulic cylinder 4 is axially connected to the linkage shaft 801 through the coupling 803, and the linkage shaft 801 can rotate independently through the ball bearing 804.

[0027] See attached Figure 1-5 The lower end of the lifting seat 2 is connected to the guide column 3 through a plurality of spring columns 9, one end of the piston rod of the two hydraulic cylinders 5 is fixedly connected to the lifting seat 2, and the hydraulic cylinders 5 drive the lifting seat 2 to move up and down, and the spring columns 9 are used to achieve the functions of shock absorption, buffering and support.

[0028] In this embodiment, the diaphragm frame is installed on the press-fitting station by a positioning fixture and placed directly below the press plate 802. The transport mechanism in the press-fitting device grabs the diaphragm and places it on the diaphragm frame to wait for press-fitting. The specific implementation is as follows: Press-fitting: start the hydraulic cylinder 4, drive the linkage shaft 801 to move downward, drive the pressure plate 802 to descend, press the diaphragm, and press the diaphragm and the diaphragm frame together through the impact force provided by the hydraulic cylinder 4, wherein the engaging part between the center of the diaphragm and the diaphragm frame is press-fitted into place through the floating pressure head 8022, and the edge of the diaphragm is squeezed at multiple points through multiple groups of ball pressure heads 8021, increasing the local force points, so that the edge of the diaphragm is stuck in the diaphragm frame to prevent warping; after the press-fitting is completed, the hydraulic cylinder 4 drives the pressure plate 802 to reset upward, and after the reset, the probes of the multiple dial gauges 701 are in a state of penetrating the positioning holes 8024, and the block 8011 on the linkage shaft 801 is butted against the through hole 6041; Online detection: Start the two hydraulic cylinders 5 to drive the lifting seat 2 to move downward along the guide column 3 and the spring column 9 until the probe of the dial indicator measuring instrument 701 extends out of the pressure plate 802 and contacts the diaphragm. At this time, the measuring rod 7013 of the dial indicator measuring instrument 701 passes through the positioning hole 8024 on the pressure plate 802, and the rotating motor 601 is started to drive the linkage disk 604 to rotate through the meshing structure of the driven gear 603 and the driving gear 602, so as to drive the probes of multiple dial indicators 701 to perform flatness detection along the edge of the diaphragm, observe the real-time detection data (in this embodiment, the dial indicator can be connected to the data acquisition device through an adapter, a concentrator or a Bluetooth wireless module during use to achieve the purpose of collecting data), and judge whether the press-fitting is qualified; when the linkage disk 604 rotates, the pressure plate 802 rotates together with the linkage shaft 801.

[0029] In another embodiment, the pressure plate 802 is in contact with the diaphragm and remains stationary after being pressed, and the lifting seat 2 is driven to slightly descend so that the through hole 6041 on the linkage disk 604 is docked with the block 8011 on the linkage shaft 801, and the rotating motor 601 is started to drive the linkage disk 604 to rotate, thereby driving the linkage shaft 801 and the pressure plate 802 to rotate at the same time. During the rotation of the pressure plate 802, multiple groups of ball pressure heads 8021 roll slightly with the rotating power to roll the edge of the diaphragm to further press the diaphragm.

[0030] In summary, by arranging a floating pressure head 8022 and a plurality of groups of ball pressure heads 8021 on the pressure plate 802, it is possible to achieve multi-point extrusion of the diaphragm edge and increase the local stress points, thereby further ensuring the smooth pressing between the diaphragm edge and the diaphragm frame; by adopting a toothed rotary drive structure composed of a rotating motor 601, a driving gear 602, and a driven gear 603, the linkage disk 604 is driven to rotate smoothly, achieving high-precision, low-speed and smooth motion transmission, ensuring the detection accuracy of the dial indicator measuring instrument 701, and realizing online flatness detection, so as to facilitate timely removal of unqualified products.

[0031] The above-described embodiments only express a certain implementation mode of the present invention, and the description thereof is relatively specific and detailed, but it cannot be understood as limiting the patent scope of the present invention. It should be pointed out that, for ordinary technicians in this field, several modifications and improvements can be made without departing from the concept of the present invention, which all belong to the protection scope of the present invention. Therefore, the protection scope of the patent of the present invention shall be based on the attached claims.

Claims

1. A water inlet valve diaphragm press-fitting device, comprising a fixing frame (1) and a lifting seat (2), characterized in that: The lifting seat (2) is connected via a plurality of guide columns (3), the lower ends of the plurality of guide columns (3) are connected to spring columns (9), the fixed frame (1) is provided with a hydraulic cylinder 1 (4), both sides of the hydraulic cylinder 1 (4) are provided with hydraulic cylinder 2 (5), the lifting seat (2) is provided with a rotating mechanism (6) and a flatness detection assembly (7), the flatness detection assembly (7) comprises a plurality of dial gauges (701), the rotating mechanism (6) comprises a rotating motor (601), a driving gear (602) and a driven gear (603), a linkage disk (604) is provided in the driven gear (603), the hydraulic cylinder 1 (4) is movable The plug end is connected to a press-fit assembly (8), the press-fit assembly (8) comprising a linkage shaft (801) and a pressure plate (802), the linkage shaft (801) being provided with a coupling (803) and a ball bearing (804), the linkage shaft (801) passing through the linkage plate (604), a plurality of groups of ball pressure heads (8021) being provided at the lower end of the pressure plate (802), a floating pressure head (8022) being provided in the middle of the plurality of groups of ball pressure heads (8021), the upper end of the floating pressure head (8022) being connected to the pressure plate (802) via a telescopic spring (8023), the telescopic spring (8023) being embedded in the pressure plate (802).

2. The water inlet valve diaphragm press-fitting device according to claim 1, characterized in that: A plurality of groups of ball pressure heads (8021) are embedded in the pressure plate (802) via waist-shaped grooves, and positioning holes (8024) are provided between the plurality of groups of ball pressure heads (8021).

3. The water inlet valve diaphragm press-fitting device according to claim 2, characterized in that: The dial indicator measuring instrument (701) comprises a dial (7011), a shaft sleeve (7012) and a measuring rod (7013); the shaft sleeve (7012) has an external thread; the shaft sleeve (7012) and the measuring rod (7013) pass through the positioning hole (8024).

4. The water inlet valve diaphragm press-fitting device according to claim 3, characterized in that: The linkage disk (604) is provided with a through hole (6041) corresponding to the linkage shaft (801), and a plurality of adjustment slots (6042) corresponding to the dial indicator (701) are also provided around the through hole (6041). The shaft sleeve (7012) passes through the adjustment slots (6042) and is fixedly connected to the linkage disk (604) via a locking nut (6043).

5. The water inlet valve diaphragm press-fitting device according to claim 4, characterized in that: A clamping block (8011) is provided on the linkage shaft (801), and the clamping block (8011) is matched with the through hole (6041).

6. The water inlet valve diaphragm press-fitting device according to claim 1, characterized in that: The driven gear (603) is a half gear, the driven gear (603) is meshingly connected with the driving gear (602), and the driven gear (603) and the driving gear (602) are both embedded in the lifting seat (2).

7. The water inlet valve diaphragm press-fitting device according to claim 1, characterized in that: One end of the piston rod of the hydraulic cylinder 1 (4) is connected to the coupling (803), and the lower end of the coupling (803) is connected to the ball bearing (804).

8. The water inlet valve diaphragm press-fitting device according to claim 1, characterized in that: One end of the piston rod of the two hydraulic cylinders (5) is fixedly connected to the lifting seat (2).

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