Press-in jig for water meter cover and liquid crystal display screen

Abstract

The utility model relates to the technical field of water meter production, in particular to a press-in jig for a water meter cover and a liquid crystal display screen. Comprising a control box, a base is fixedly arranged on the upper side wall of the control box, and a containing groove is formed in the upper side wall of the base. According to the utility model, after an operator places a substrate shell into the placing groove, the piston rod of the clamping jaw expansion cylinder extends out to drive the two expansion wedge blocks to move downwards synchronously, so that the purpose of expanding the four substrate clamping jaws at the same time can be achieved, and the operator can place a display screen body and a substrate to positions among the four substrate clamping jaws conveniently; and then a piston rod of a substrate pressing air cylinder extends out to drive a plurality of substrate pressing rods to move downwards synchronously, so that the display screen body can be completely pressed into the substrate shell, and after the upwards-moving expansion wedge blocks are separated from the wedge-shaped barbs, the rebounded substrate clamping claws drive the corresponding wedge-shaped barbs to clamp and fix the substrate. Therefore, the water meter product can be assembled.

Description

Technical Field

[0001] This utility model relates to the field of water meter manufacturing technology, specifically to a pressing fixture for a water meter cover and an LCD screen. Background Technology

[0002] A water meter is a daily water usage measuring device. Its main function is to accumulate flow, recording the amount of water passing through the pipes over a period of time. Figure 4 and Figure 5 A small household water meter product 6 currently in production consists of a display unit composed of three main parts from bottom to top: a substrate shell 61, a display screen body 62, and a substrate 63. Four substrate claws 611 are integrally formed and fixed on the side of the substrate shell 61 closest to the substrate 63. Wedge-shaped barbs 612 are integrally formed and fixed on the other end of each substrate claw 611. Side plates are integrally formed and fixed on opposite sides of the substrate 63. When the water meter product 6 is assembled, the four substrate claws 611 contact the opposite sides of the substrate 63, and the two substrate claws 611 on one side of the substrate 63 contact the opposite sides of the side plates. Simultaneously, the four wedge-shaped barbs 612 contact the side of the substrate 63 away from the substrate shell 61. The wedge-shaped barbs 612 and the substrate claws 611 work together to restrict the position between the substrate 63 and the substrate shell 61, preventing relative movement between them. This secures the substrate 63 and the substrate shell 61, allowing the substrate 63 to encapsulate and fix the display screen body 62 inside the substrate shell 63.

[0003] The assembly steps of the water meter product 6 are as follows: First, simultaneously expand the four base plate claws 611 at a certain angle away from the center of the base plate housing 61 and keep this state unchanged, so that the wedge-shaped barbs 612 are offset to the outside of the base plate housing 61, so as to avoid the wedge-shaped barbs 612 blocking the assembly of the display screen body 62 and the base plate 63. Then, place the display screen body 62 inside the base plate housing 61 and place the base plate 63 on the side of the display screen body 62 away from the base plate housing 61. Then, press the base plate 63 towards the base plate housing 61 until the base plate 63 is completely pressed into the interior of the base plate housing 61. Then, simultaneously release the four base plate claws 611, so that the four base plate claws 611 drive the corresponding wedge-shaped barbs 612 to spring back and reset, so that the wedge-shaped barbs 612 contact the side of the base plate 63 away from the base plate housing 61, thus completing the assembly of the water meter product 6.

[0004] When assembling the water meter product 6, it is difficult for operators to simultaneously expand the four substrate claws 611 to a certain angle and maintain this state without relying on external force such as equipment or tools to complete the assembly of the display body 62 and the substrate 63. Therefore, it is necessary to design a fixture that can expand the four substrate claws 611 of the substrate shell 61 while maintaining this state, and then completely press the substrate 63 into the substrate shell 61. Utility Model Content

[0005] The purpose of this utility model is to provide a pressing fixture for a water meter cover and an LCD screen, so as to solve the problems mentioned in the background art.

[0006] To achieve the above objectives, one objective of this utility model is to provide a pressing fixture for a water meter cover and an LCD screen, including a control box. A base is fixedly mounted on the upper side wall of the control box, and a placement groove is formed on the upper side wall of the base. The water meter is placed inside the placement groove. A fixing frame is fixedly connected to the upper side wall of the base on one side of the placement groove. A base plate pressing cylinder and a claw expansion cylinder are fixedly mounted on the side of the fixing frame near the placement groove via a bracket. The claw expansion cylinder is positioned above the base plate pressing cylinder. The lower end of the piston rod of the base plate pressing cylinder is fixedly provided with... A pressure rod fixing seat is provided, and several base plate pressure rods are fixedly installed on the lower side wall of the pressure rod fixing seat. The base plate is located directly below the base plate pressure rod. A connecting rod is coaxially fixed to the lower end of the piston rod of the claw expansion cylinder. The lower end of the connecting rod slides through the pressure rod fixing seat and is fixed to a wedge block fixing seat. Two expansion wedges are fixedly connected to the lower side wall of the wedge block fixing seat. An inclined groove is opened on the side of the two expansion wedges that are far away from each other, near the bottom side wall. The two inclined grooves are respectively located on the upper side of the four base plate claws. When the expansion wedges move down, the inclined grooves and the side walls of the wedge-shaped barbs come into contact.

[0007] As a further improvement to this technical solution, a number of guide posts are fixedly installed on the upper side wall of the base. The guide posts are vertically arranged, and the pressure rod fixing seat and the wedge fixing seat are slidably connected to the number of guide posts.

[0008] As a further improvement to this technical solution, the wedge block fixing seat is provided with vertical through slots at positions corresponding to the base plate pressing rod, and the side wall of the base plate pressing rod slides in contact with the corresponding through slot.

[0009] As a further improvement to this technical solution, when the expansion wedge moves downward, the inclined groove makes sliding contact with the corresponding two wedge-shaped barbs, and the expansion wedge pushes the corresponding two substrate claws to bend elastically away from the center of the substrate shell.

[0010] Compared with the prior art, the beneficial effects of this utility model are as follows:

[0011] The water meter cover and LCD screen pressing fixture allows the operator to place the substrate shell into the placement groove. Then, the piston rod of the claw expansion cylinder extends, causing two expansion wedges to move downwards synchronously. The moving expansion wedges push the wedge-shaped barbs along the inclined surface of the groove away from the center of the substrate shell, thus simultaneously expanding four substrate claws. This facilitates the operator placing the display screen body and substrate between the four substrate claws. Next, the piston rod of the substrate pressing cylinder extends, causing several substrate pressing rods to move downwards synchronously. The moving substrate pressing rods press the substrate closer to the substrate shell, completely pressing the display screen body into the substrate shell. After the upward-moving expansion wedges disengage from the wedge-shaped barbs, the rebounding substrate claws engage and fix the substrate with the corresponding wedge-shaped barbs, completing the assembly of the water meter product and improving the operator's assembly efficiency. Attached Figure Description

[0012] Figure 1 This is one of the schematic diagrams of the overall structure of this utility model and the structure of the water meter product after combination;

[0013] Figure 2 This is a schematic diagram of the overall structure of this utility model;

[0014] Figure 3 This is a partial structural schematic diagram of the present invention;

[0015] Figure 4 This is a structural schematic diagram of the water meter product of this utility model;

[0016] Figure 5 This is an exploded view of the water meter product of this utility model;

[0017] Figure 6 This is a schematic diagram of the overall structure of this utility model and the structure after the substrate shell is assembled;

[0018] Figure 7 For the present utility model Figure 6 Enlarged view of the structure at point A in the middle;

[0019] Figure 8 This is the second schematic diagram of the overall structure of this utility model and the structure of the water meter product after combination;

[0020] Figure 9 This is the third schematic diagram of the overall structure of this utility model and the structure of the water meter product after combination;

[0021] Figure 10 This is a cross-sectional view of the control box of this utility model.

[0022] The meanings of the labels in the diagram are as follows:

[0023] 1. Control box;

[0024] 2. Base; 21. Placement slot; 22. Guide post;

[0025] 3. Fixture;

[0026] 4. Substrate pressing cylinder; 41. Pressing rod fixing seat; 42. Substrate pressing rod;

[0027] 5. Claw expansion cylinder; 51. Connecting rod; 52. Wedge block fixing seat; 53. Expansion wedge block; 531. Inclined groove;

[0028] 6. Water meter products; 61. Substrate housing; 611. Substrate claws; 612. Wedge-shaped barbs; 62. Display screen body; 63. Substrate. Detailed Implementation

[0029] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0030] Example 1

[0031] Please see Figures 1-10 As shown, one of the objectives of this embodiment is to provide a pressing fixture for a water meter cover and an LCD screen, including a control box 1. A base 2 is fixedly mounted on the upper side wall of the control box 1. A placement groove 21 is provided on the upper side wall of the base 2. The interior of the placement groove 21 is used to place the water meter product 6. When the substrate shell 61 is placed on the bottom surface inside the placement groove 21, the outer side wall of the substrate shell 61 contacts the inner side wall of the placement groove 21. The placement groove 21 restricts the horizontal movement of the substrate shell 61, thereby ensuring the stability of the water meter product 6 during the pressing process. At the same time, a hand groove is provided on one side of the placement groove 21. The operator can reach into the interior of the placement groove 21 through the hand groove to remove the water meter product 6 from the placement groove 21.

[0032] To facilitate the operator in expanding the substrate claw 611 away from the center of the substrate shell 61, a fixing frame 3 is fixedly connected to the upper side wall of the base 2 at one side of the placement groove 21. A claw expansion cylinder 5 is fixedly mounted on the side of the fixing frame 3 near the placement groove 21 via a bracket. A connecting rod 51 is coaxially fixed to the lower end of the piston rod of the claw expansion cylinder 5. A wedge block fixing seat 52 is fixed to the lower end of the connecting rod 51. Two expansion wedges 53 are fixedly connected to the lower side wall of the wedge block fixing seat 52. The two expansion wedges 53 are respectively located on the left and right sides of the upper side of the placement groove 21. The extension and retraction of the piston rod of the claw expansion cylinder 5 can drive the connecting rod 51, the wedge block fixing seat 52, and the expansion wedges 53 to move vertically synchronously. Inclined grooves 531 are provided near the bottom side wall on the side of the two expansion wedges 53 that are far apart from each other. When the expansion wedges 53 move downwards, the inclined grooves 531 contact the side wall of the wedge-shaped barb 612. Figure 6 and Figure 7 After the operator places the substrate shell 61 into the placement slot 21, two inclined slots 531 are respectively set on the upper side of the four substrate claws 611. Wedge-shaped barbs 612 are fixed to the end of the substrate claws 611 near the inclined slots 531. The operator then controls the piston rod of the claw expansion cylinder 5 to extend, causing the connecting rod 51, wedge block fixing seat 52, and expansion wedge block 53 to move downwards synchronously. When the expansion wedge block 53 moves downwards, the inclined slots 531 will slide into contact with the corresponding two wedge-shaped barbs 612. Because the substrate claws 611 are elastic, the wedge-shaped barbs 612 will slide along the inclined slots 531. The inclined plane deflects away from the center of the substrate housing 61, and the substrate claws 611 will elastically bend away from the center of the substrate housing 61. When the wedge-shaped barb 612 moves away from the top of the substrate housing 61, the piston rod of the claw expansion cylinder 5 stops extending, and the expansion wedge block 53 stops moving down. At this time, all four substrate claws 611 deflect away from the substrate housing 61, so that the upper side of the substrate housing 61 is not blocked by the substrate claws 611 and the wedge-shaped barb 612, making it convenient for the operator to place the display body 62 and the substrate 63 between the four substrate claws 611.

[0033] Reference Figure 8After the wedge-shaped barb 612 is removed from the top side of the substrate housing 61, the operator places the display body 62 inside the substrate housing 61, and then places the substrate 63 on the top side of the display body 62, so that the display body 62 and the substrate 63 are both located between the four substrate claws 611. In order to fully press the substrate 63 into the interior of the substrate housing 61 and to ensure that the display body 62 can be stably positioned between the substrate housing 61 and the substrate 63, a substrate pressing cylinder 4 is fixedly installed on the side of the fixing frame 3 near the placement slot 21 by a bracket, and the claw expansion cylinder 5 is located above the substrate pressing cylinder 4. A pressing rod fixing seat 41 is fixedly installed at the lower end of the piston rod of the substrate pressing cylinder 4. The lower end of the connecting rod 51 slides through the pressing rod fixing seat 41. Several substrate pressing rods 42 are fixedly installed on the lower side wall of the pressing rod fixing seat 41. The substrate pressing rods 42 are located directly above the substrate 63. The piston rod of the substrate pressing cylinder 4 extends and retracts, causing the pressing rod fixing seat 41 and the substrate pressing rods 42 to move vertically synchronously. At the same time, through slots are vertically opened on the wedge fixing seat 52 at positions corresponding to the substrate pressing rods 42. That is, the axis of the through slot is parallel to the axis of the guide post 22. The side wall of the substrate pressing rod 42 slides in contact with the corresponding through slot. The through slot restricts the horizontal movement of the substrate pressing rod 42, thereby improving the stability of the pressing rod fixing seat 41 and the substrate pressing rod 42 during vertical movement.

[0034] When substrate 63 is placed directly above display body 62, substrate 63 is located directly below substrate pressing rod 42. The operator controls the piston rod of substrate pressing cylinder 4 to extend, causing pressing rod fixing seat 41 and substrate pressing rod 42 to move downward synchronously. The lower end of the moving substrate pressing rod 42 will contact the upper side wall of substrate 63, and then substrate pressing rod 42 will press substrate 63 towards substrate shell 61. Substrate 63 will press display body 62 into substrate shell 61 with uniform force. During this process, the height of substrate 63 will decrease. When the height of substrate 63 is lower than the height of wedge-shaped barb 612, the piston rod of substrate pressing cylinder 4 stops extending. At this time, display body 62 is pressed into place inside substrate shell 61. Figure 9The operator then controls the piston rod of the claw expansion cylinder 5 to move the connecting rod 51, the wedge block fixing seat 52, and the expansion wedge block 53 upward. The inclined surface of the moving groove 531 moves relative to the wedge-shaped barb 612, causing the substrate claw 611 to move the wedge-shaped barb 612 closer to the middle position of the substrate shell 61 under the action of the rebound force. When the expansion wedge block 53 disengages from the wedge-shaped barb 612, the substrate claw 611 returns to a vertical state, and the wedge-shaped barb 612 moves to the upper side of the substrate 63. At this time, the four... The substrate claws 611 contact multiple sides of the substrate 63, restricting the horizontal movement of the substrate 63. The lower sidewall of the wedge-shaped barb 612 contacts the upper sidewall of the substrate 63, restricting the vertical movement of the substrate 63 away from the substrate housing 61. This secures the substrate 63 and the substrate housing 61, encapsulates the display body 62 between the substrate 63 and the substrate housing 61, and assembles the substrate housing 61, the display body 62, and the substrate 63 into a water meter product 6.

[0035] To improve the stability of the pressure rod fixing seat 41 and the wedge fixing seat 52 during movement, several guide posts 22 are fixedly installed on the upper side wall of the base 2. The guide posts 22 are vertically arranged, and the pressure rod fixing seat 41 and the wedge fixing seat 52 are slidably connected to the guide posts 22. The guide posts 22 restrict the pressure rod fixing seat 41 and the wedge fixing seat 52 to move vertically only along the axis of the guide posts 22, thereby improving the stability of the pressure rod fixing seat 41 and the wedge fixing seat 52 during vertical movement.

[0036] When using this device, the operator first places the substrate housing 61 into the placement slot 21, then controls the piston rod of the claw expansion cylinder 5 to extend, causing the two expansion wedges 53 to move down synchronously. This causes the expansion wedges 53 to push the corresponding two substrate claws 611 to bend elastically away from the center of the substrate housing 61, until the wedge-shaped barbs 612 move away from the top of the substrate housing 61. Then, the operator places the display screen body 62 inside the substrate housing 61, places the substrate 63 on top of the substrate housing 61 and the display screen body 62, and then controls the piston rod of the substrate pressing cylinder 4 to extend. Several substrate pressing rods 42 are moved down synchronously, pressing the substrate 63 against the underside of the wedge-shaped barb 612. Then, the operator controls the piston rod of the claw expansion cylinder 5 to retract, causing two expansion wedges 53 to move up synchronously, so that the four substrate claws 611 engage and fix the substrate 63 through the corresponding wedge-shaped barbs 612. The substrate shell 61, the display screen body 62, and the substrate 63 are assembled into the water meter product 6. Then, the piston rod of the substrate pressing cylinder 4 is controlled to retract, causing the substrate pressing rods 42 to move up and reset. The operator can then remove the assembled water meter product 6 from the placement slot 21. Figure 10The control box 1 contains electrical components such as a power supply, relays, time controllers, and solenoid valves for controlling the extension and retraction of the piston rods of the base plate pressing cylinder 4 and the claw expansion cylinder 5. Operators can precisely control the extension and retraction of the piston rods of the base plate pressing cylinder 4 and the claw expansion cylinder 5 through the control box 1.

[0037] The foregoing has shown and described the basic principles, main features, and advantages of this utility model. Those skilled in the art should understand that this utility model is not limited to the above embodiments. The embodiments and descriptions in the specification are merely preferred examples and are not intended to limit the utility model. Various changes and modifications can be made to this utility model without departing from its spirit and scope, and all such changes and modifications fall within the scope of the claimed utility model. The scope of protection of this utility model is defined by the appended claims and their equivalents.

Claims

1. A press-in jig for a water meter cover and a liquid crystal display screen, comprising a control box (1), characterized in that: The upper side wall of the control box (1) is fixedly provided with a base (2), the upper side wall of the base (2) is provided with a placing groove (21), the water meter product (6) is placed in the placing groove (21), the upper side wall of the base (2) is fixedly connected with a fixing frame (3) on one side of the placing groove (21), the fixing frame (3) is fixedly installed with a base plate pressing cylinder (4) and a jaw expanding cylinder (5) on the side close to the placing groove (21) through a support, and the jaw expanding cylinder (5) is arranged on the upper side of the base plate pressing cylinder (4), the lower end of the piston rod of the base plate pressing cylinder (4) is fixedly provided with a pressing rod fixing seat (41), the lower side wall of the pressing rod fixing seat (41) is fixedly provided with a plurality of base plate pressing rods (42), a base plate (63) is located on the lower side of the base plate pressing rod (42), the lower end of the piston rod of the jaw expanding cylinder (5) is coaxially fixedly provided with a connecting rod (51), the lower end of the connecting rod (51) is slidably penetrated through the pressing rod fixing seat (41) and fixedly provided with a wedge fixing seat (52), the lower side wall of the wedge fixing seat (52) is fixedly connected with two expanding wedges (53), the side of the two expanding wedges (53) away from each other is provided with an inclined groove (531) close to the bottom side wall, and the two inclined grooves (531) are arranged on the upper side of the four base plate jaws (611), respectively, when the expanding wedge (53) moves downward, the inclined groove (531) and the side wall of the wedge-shaped barb (612) are in contact.

2. The press-in jig for a water meter cover and a liquid crystal display according to claim 1, wherein: The upper side wall of the base (2) is fixedly provided with a plurality of guide columns (22), the guide columns (22) are vertically arranged, and the pressing rod fixing seat (41) and the wedge fixing seat (52) are slidably connected with the plurality of guide columns (22).

3. The press-in jig for a water meter cover and a liquid crystal display screen according to claim 1, characterized in that: Corresponding positions of the wedge fixing seat (52) and the base plate pressing rod (42) are vertically provided with through grooves, and the side wall of the base plate pressing rod (42) is slidably connected with the corresponding through groove.

4. The press-in jig for a water meter cover and a liquid crystal display screen according to claim 1, characterized in that: When the expanding wedge (53) moves downward, the inclined groove (531) is in sliding contact with the corresponding two wedge-shaped barbs (612), and the expanding wedge (53) drives the corresponding two base plate jaws (611) to elastically bend away from the center position of the base plate shell (61).

Images