Single-face tensioning structure tool

Abstract

The invention relates to a single-face tensioning structure tool. Comprising a substrate structure provided with a plurality of operation through holes; ratchet wheel tensioning devices are detachably connected to the two ends of the base plate structure; pressing rod grooves are formed in the two ends of the base plate structure, tensioning installation structures are installed at the two ends of the base plate structure, and tensioning pressing rod structures capable of being inserted into the corresponding pressing rod grooves are movably connected to the tensioning installation structures; each tensioning installation structure is provided with a jacking piece. A plurality of pressing clamping pieces are mounted on the substrate structure; the ratchet wheel tensioning device comprises a fixed installation frame, a ratchet wheel shaft rod is rotationally connected to the fixed installation frame, multiple sets of tensioning ratchet wheels are installed on the ratchet wheel shaft rod, and the tip end of each tensioning ratchet wheel can be embedded into meshes of the silk screen. Each tensioning ratchet wheel is provided with a plurality of through holes. The tensioning device further comprises a stop supporting rod which can be arranged in the through holes of the tensioning ratchet wheels in a penetrating mode. And the tooth parts of the tensioning ratchet wheels in the two groups of ratchet wheel tensioning devices face opposite directions. The silk screen forming the cover plate assembly can be tensioned and fixed, the two cover plate frames of the sandwich structure and the silk screen are clamped and fixed, the situation that the silk screen is bent and deformed in the welding process is avoided, and the welding effect is improved.

Description

Technical Field

[0001] The invention belongs to the technical field of mechanical processing, and in particular relates to a single-sided tensioning structure tooling. Background Art

[0002] Chassis are widely used in instruments, meters, electronics, communications, automation, precision machinery, industrial control and other industries. Among them, military electronic chassis are widely used in instruments, meters, electronics, communications, automation, precision machinery and other commonly used by the military.

[0003] There is a kind of Figure 8 The cover assembly shown is installed on the chassis to provide protection and ventilation. Structurally, the cover assembly includes two cover frames arranged in parallel. The cover frames are made of thin-gauge metal plates. A metal wire mesh is arranged between the two cover frames. The two cover frames and the wire mesh are connected by welding to form a sandwich structure.

[0004] Due to the high precision required for the cover assembly, manual welding is generally used. However, under relatively strict process requirements, welding is relatively difficult, especially for the welding of thin-gauge metal plates and metal meshes. The welding stress generated can easily cause the metal mesh to bend and deform, resulting in unevenness and poor uniformity in the finished cover assembly. Therefore, it is necessary to tension and straighten the metal mesh before welding, and to stably clamp the metal mesh and the two cover frames to avoid wrinkles and bends in the metal mesh, which may affect the quality of the finished cover assembly. Therefore, it is urgent to design a single-sided tensioning structure tooling to solve the above problems. Summary of the invention

[0005] The present invention provides a single-sided tensioning structure tooling with a reasonable structural design to solve the technical problems existing in the known technology. The present invention can tension and fix the wire mesh constituting the cover plate assembly, and clamp and fix the two cover plate frames and the wire mesh in a sandwich structure, thereby avoiding bending and deformation of the wire mesh in the subsequent welding process, improving the welding effect, and reducing the scrap rate of the finished cover plate assembly.

[0006] The technical solution adopted by the present invention to solve the technical problems existing in the known technology is: a single-sided tensioning structure tooling includes a base plate structure with a plurality of operation through holes, which is used to lay the cover plate frame and the wire mesh flat; ratchet tensioning devices that are effectively combined with the wire mesh are detachably connected at both ends of the base plate structure; pressure rod grooves are opened at both ends of the base plate structure and tensioning installation structures corresponding to the pressure rod grooves are installed, and tensioning pressure rod structures that can be inserted into the corresponding pressure rod grooves are movably connected to each tensioning installation structure for pressing and tensioning the wire mesh; a tensioning piece is installed on each tensioning installation structure for pressing the corresponding tensioning pressure rod structure downward and locking its position; A plurality of pressing clamps located between the two sets of tensioning mounting structures are installed on the structure, which are used to press the cover plate assembly onto the substrate structure; the ratchet tensioning device includes a fixed mounting frame detachably connected to the substrate structure, a ratchet shaft rod arranged laterally is rotatably connected to the fixed mounting frame, and a plurality of sets of tensioning ratchets distributed along the axial direction are installed on the ratchet shaft rod, and the tip of each tensioning ratchet can be embedded in the mesh of the wire mesh; a plurality of through holes evenly distributed along the circumference are opened on each tensioning ratchet, and a stop support rod detachably connected to the fixed mounting frame and can be passed through the corresponding through holes of each tensioning ratchet is also included; the teeth of the plurality of tensioning ratchets in the two sets of ratchet tensioning devices face in opposite directions.

[0007] The advantages and positive effects of the present invention are as follows: the present invention provides a single-sided tensioning structure tooling, which facilitates the layer-by-layer laying of the cover plate frame and the wire mesh by setting a base plate structure, and can perform preliminary tensioning operation on the wire mesh through a ratchet tensioning device, that is, the tip of the tensioning ratchet is embedded in the mesh of the wire mesh and then rotated, so as to pull the wire mesh outward, and the position of the tensioning ratchet can be locked by the set stop support rod to prevent the tensioning ratchet from rotating; the pressure rod groove opened on the base plate structure cooperates with the embeddable tensioning pressure rod structure set above it, so as to further pull the wire mesh, and the position of the tensioning pressure rod structure can be locked by cooperating with the tensioning member to realize further tensioning and straightening operation of the wire mesh; the two cover plate frames and the wire mesh distributed in a sandwich structure can be clamped and fixed by the set of a plurality of pressing clamps, so as to avoid bending and deformation of the wire mesh in the subsequent welding process, and reduce the scrap rate of the finished cover plate assembly; the plurality of operating through holes opened on the base plate structure can facilitate the staff to perform welding operations on the cover plate frame and the wire mesh. The present invention can tension and fix the wire mesh constituting the cover plate assembly, and clamp and fix the two cover plate frames and the wire mesh in a sandwich structure, thereby avoiding bending and deformation of the wire mesh during subsequent welding and reducing the scrap rate of the finished cover plate assembly.

[0008] Preferably, the tensioning pressure rod structure comprises a T-shaped pull rod passing through a through hole provided on the tensioning mounting structure, and a transversely arranged tensioning pressure rod member is installed at the lower end of the T-shaped pull rod, and the tensioning pressure rod member can be embedded in a corresponding pressure rod groove.

[0009] Preferably: the tensioning mounting structure includes a mounting plate body detachably connected to the base plate structure, a through slot connecting its two opposite sides and allowing the end of the wire mesh to pass through is provided on the mounting plate body, and a pressure rod accommodating slot for accommodating the tensioning pressure rod structure and connected to the through slot is provided on the mounting plate body.

[0010] Preferably, the tensioning members are a plurality of tensioning bolts which are threadedly connected to the tensioning installation structure and contact the tops of the corresponding tensioning pressure rods.

[0011] Preferably: the substrate structure further comprises a substrate body, two groups of pressure rod grooves are respectively located at two ends of the substrate body, a frame groove matching the cover frame is provided on the top surface of the substrate body, and a plurality of operating through holes are provided in the frame groove.

[0012] Preferably: the fixed mounting frame is fixedly connected to the mounting plate body, and the mounting plate body is detachably connected to the base plate structure by bolts.

[0013] Preferably, each tensioning ratchet is connected to the corresponding ratchet shaft via a locking nut, and the axial projection profiles of the tensioning ratchets mounted on each ratchet shaft completely overlap.

[0014] Preferably, the longitudinal section of each pressure rod groove is a funnel structure that is wide at the top and narrow at the bottom.

[0015] Preferably, each pressing and clamping member is a horizontal clamp. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 It is a three-dimensional structural schematic diagram of the present invention;

[0017] Figure 2 It is a three-dimensional structural schematic diagram of the main part of the present invention, from the bottom viewing angle;

[0018] Figure 3 is a schematic diagram of the three-dimensional structure of the substrate structure in the present invention;

[0019] Figure 4 yes Figure 1 AA cross-sectional structure diagram in;

[0020] Figure 5 yes Figure 1 BB cross-sectional structure diagram in FIG.

[0021] Figure 6 yes Figure 4 A magnified schematic diagram of the C region in FIG.

[0022] Figure 7 yes Figure 4 A magnified schematic diagram of the D region in FIG.

[0023] Figure 8It is a three-dimensional structural schematic diagram of the cover assembly.

[0024] In the figure: 1. ratchet tensioning device; 1-1. ratchet shaft; 1-2. stop support rod; 1-3. tensioning ratchet; 1-4. fixed mounting frame; 2. tensioning mounting structure; 2-1. pressure rod accommodating groove; 2-2. through-groove; 2-3. mounting plate body; 3. base plate structure; 3-1. base plate body; 3-2. pressure rod groove; 3-3. frame groove; 3-4. operating through hole; 4. pressing clamp; 5. tightening member; 6. tensioning pressure rod structure; 6-1. tensioning pressure rod member; 6-2. T-type pull rod; 7. cover plate assembly; 7-1. cover plate frame; 7-2. wire mesh. DETAILED DESCRIPTION

[0025] In order to further understand the content, features and effects of the present invention, the following embodiments are described in detail as follows:

[0026] See also Figure 1 The single-sided tensioning structure tooling of the present invention includes a substrate structure 3, further see Figure 3 and Figure 6 Structurally, the substrate structure 3 includes a substrate body 3-1, which is used to lay the cover frame 7-1 and the wire mesh 7-2 flatly; a frame groove 3-3 matching the cover frame 7-1 is opened on the top surface of the substrate body 3-1, and a plurality of operation through holes 3-4 are opened on the frame groove 3-3 to facilitate the staff to perform welding operations on the cover frame 7-1 and the wire mesh 7-2; see further Figure 7 A pressure rod groove 3-2 is provided at both ends of the substrate body 3-1. Two groups of pressure rod grooves 3-2 are arranged in parallel and extend along the width direction of the substrate body 3-1. Furthermore, the longitudinal section of each pressure rod groove 3-2 is a funnel structure that is wide at the top and narrow at the bottom.

[0027] like Figure 1 , Figure 4 and Figure 5 As shown, ratchet tensioning device 1 and tensioning mounting structure 2 are detachably connected at both ends of substrate structure 3, wherein ratchet tensioning device 1 can be effectively combined with wire mesh 7-2. In this embodiment, ratchet tensioning device 1 is fixedly connected to corresponding tensioning mounting structure 2, and tensioning mounting structure 2 is detachably connected to the end of substrate structure 3 by bolts, so that in the actual working process, only substrate structure 3 and tensioning mounting structure 2 need to be disassembled and assembled to realize the overall rapid disassembly and assembly of ratchet tensioning device 1 and tensioning mounting structure 2.

[0028] See also Figure 2The ratchet tensioning device 1 includes a fixed mounting frame 1-4 fixedly connected to the tensioning mounting structure 2, and a ratchet shaft 1-1 arranged transversely is rotatably connected to the fixed mounting frame 1-4, and the axial direction of the ratchet shaft 1-1 is consistent with the length direction of the pressure rod groove 3-2. Among them, the fixed mounting frame 1-4 includes a plate seat with an L-shaped cross-section, and two groups of ear plates extending outward and arranged in parallel are fixedly connected to the L-shaped plate seat, and the ratchet shaft 1-1 is inserted through the above two groups of ear plates and can rotate. A plurality of tensioning ratchets 1-3 distributed along the axial direction are installed on the ratchet shaft 1-1, and the tip of each tensioning ratchet 1-3 can be embedded in the mesh of the wire mesh 7-2, and each tensioning ratchet 1-3 is made of high-hardness alloy material.

[0029] In this embodiment, the number of tensioning ratchets 1-3 installed on the same ratchet shaft 1-1 is at least 5, and each tensioning ratchet 1-3 is connected to the corresponding ratchet shaft 1-1 through a locking nut, thereby ensuring that each tensioning ratchet 1-3 can rotate synchronously with the corresponding ratchet shaft 1-1, and the axial projection profiles of the tensioning ratchets 1-3 installed on each ratchet shaft 1-1 completely overlap. It is worth noting that the teeth of the tensioning ratchets 1-3 in the two groups of ratchet tensioning devices 1 in this embodiment are in opposite directions, and further, the teeth of each tensioning ratchet 1-3 at the bottom are oriented outward.

[0030] like Figure 2 As shown, each tensioning ratchet 1-3 is provided with a plurality of through holes evenly distributed along the circumferential direction, and also includes a stop support rod 1-2 which is detachably connected to the fixed mounting frame 1-4 and can be inserted into the corresponding through holes of each tensioning ratchet 1-3; further, the stop support rod 1-2 is inserted into the through hole opened on the fixed mounting frame 1-4, and the axial direction of the stop support rod 1-2 is consistent with the axial direction of the ratchet shaft 1-1.

[0031] In the actual working process, after the ratchet tensioning device 1 and the tensioning installation structure 2 are installed at the end of the substrate structure 3, the ratchet ends of the above-mentioned tensioning ratchets 1-3 located at the bottom can be inserted into the mesh of the wire mesh 7-2.

[0032] See also Figure 2 The above-mentioned tensioning installation structure 2 includes a mounting plate body 2-3 detachably connected to a substrate structure 3, wherein a fixed mounting frame 1-4 is fixedly connected to the mounting plate body 2-3, and the mounting plate body 2-3 is detachably connected to the substrate structure 3 by bolts.

[0033] A through slot 2-2 is provided on the mounting plate body 2-3, which connects two opposite sides thereof and allows the end of the wire mesh 7-2 to pass through. A pressure rod receiving slot 2-1 is provided on the mounting plate body 2-3, which is connected to the through slot 2-2. Figure 7As shown, the pressure rod accommodating groove 2-1 is arranged correspondingly to the above-mentioned pressure rod groove 3-2.

[0034] like Figure 1 As shown, each tensioning mounting structure 2 is movably connected with a tensioning rod structure 6 which can be inserted into the corresponding rod groove 3-2 and is used to press the tensioning wire mesh 7-2; each tensioning mounting structure 2 is installed with a tensioning member 5 which is used to press the corresponding tensioning rod structure 6 downward and lock its position.

[0035] See also Figure 2 The tensioning rod structure 6 includes a T-shaped pull rod 6-2 inserted into a through hole provided on the tensioning mounting structure 2, a transversely arranged tensioning rod member 6-1 is installed at the lower end of the T-shaped pull rod 6-2, the tensioning rod member 6-1 is inserted into the corresponding rod receiving groove 2-1 and is gap-matched with the rod receiving groove 2-1, and the tensioning rod member 6-1 can be embedded in the corresponding rod groove 3-2. In this embodiment, the T-shaped pull rod 6-2 is screwed and connected to the middle of the tensioning rod member 6-1.

[0036] like Figure 1 and Figure 2 As shown, in this embodiment, the tensioning member 5 is a plurality of tensioning bolts that are screwed into the mounting plate body 2-3 in the tensioning mounting structure 2 and contact the top of the corresponding tensioning pressure rod 6-1. There are four groups of the above-mentioned tensioning bolts, and the four groups of tensioning bolts are distributed on both sides of the T-shaped pull rod 6-2 in pairs. In the actual working process, the tensioning member 5 is screwed downward to press the corresponding tensioning pressure rod 6-1 downward, so that the tensioning pressure rod 6-1 presses the wire mesh 7-2 downward and is embedded in the corresponding pressure rod groove 3-2, thereby achieving the purpose of tensioning the wire mesh 7-2.

[0037] like Figure 1 and Figure 4 As shown, a plurality of pressing clamps 4 are installed on the substrate structure 3 and located between two sets of tensioning mounting structures 2, which are used to press the cover assembly 7 onto the substrate structure 3; in this embodiment, each pressing clamp 4 is a horizontal clamp, which is used to press the border of the cover frame 7-1.

[0038] How it works:

[0039] In the actual working process, first remove the two sets of ratchet tensioning devices 1 and the two sets of tensioning installation structures 2 from the substrate structure 3, then place the cover frame 7-1 in the frame groove 3-3 opened on the substrate structure 3, and lay a layer of wire mesh 7-2 on the cover frame 7-1, and ensure that the two ends of the wire mesh 7-2 extend to a certain length outside the end of the substrate structure 3, and then install the disassembled ratchet tensioning device 1 and the tensioning installation structure 2 at the corresponding positions on the substrate structure 3, so that the tensioning ratchet 1-3 in the ratchet tensioning device 1 is at the bottom. The tip is inserted into the mesh of the wire mesh 7-2. In order to further improve the gripping force of the ratchet tensioning device 1 on the wire mesh 7-2, the mesh on the wire mesh 7-2 can be further hooked on the corresponding tensioning ratchet 1-3, and then the stop support rod 1-2 in the ratchet tensioning device 1 is pulled out;

[0040] Then rotate the ratchet shaft 1-1 in the ratchet tensioning device 1 to drive the multiple tensioning ratchets 1-3 installed thereon to rotate synchronously, so that the tensioning ratchet 1-3 grabs the wire mesh 7-2 and pulls it outward, and then inserts the stop support rod 1-2 to achieve the locking and non-return operation of the multiple tensioning ratchets 1-3, thereby achieving the preliminary tensioning operation of the wire mesh 7-2; in the actual working process, two groups of ratchet tensioning devices 1 can be operated at the same time to pull the two ends of the wire mesh 7-2 synchronously, or the ratchet shaft 1-1 in one group of ratchet tensioning devices 1 can be rotated first to pull one end of the wire mesh 7-2 and lock it, and then repeat the operation of the other group of ratchet tensioning devices 1 to achieve the pulling and locking of the other end of the wire mesh 7-2, and finally achieve the preliminary tensioning operation of the wire mesh 7-2;

[0041] After the initial tensioning operation of the wire mesh 7-2 is completed, the tensioning member 5 is screwed downward and the tensioning pressure rod structure 6 is pressed downward, so that the tensioning pressure rod structure 6 is embedded in a part of the pressure rod groove 3-2, and the wire mesh 7-2 is further pulled to achieve further tensioning operation of the wire mesh 7-2, so that the wire mesh 7-2 is in a straight state;

[0042] After further tensioning the wire mesh 7-2, another cover frame 7-1 is laid on the wire mesh 7-2 so that the upper and lower cover frames 7-1 are aligned, and finally the two cover frames 7-1 and the wire mesh 7-2 are pressed and clamped by a plurality of pressing and clamping members 4, so that the staff can subsequently weld the two cover frames 7-1 and the wire mesh 7-2 together to form a cover assembly 7; when performing the welding operation, the two cover frames 7-1 and the wire mesh 7-2 can be subjected to resistance welding operations through a plurality of operating through holes 3-4.

Claims

1. A single-sided tensioning structure tooling, characterized by: The invention comprises a base plate structure (3) provided with a plurality of operation through holes (3-4) for laying a cover plate frame (7-1) and a wire mesh (7-2) flatly; ratchet tensioning devices (1) which are effectively combined with the wire mesh (7-2) are detachably connected at both ends of the base plate structure (3); pressure rod grooves (3-2) are provided at both ends of the base plate structure (3) and tensioning installation structures (2) corresponding to the pressure rod grooves (3-2) are installed; each tensioning installation structure (2) is movably connected with a tensioning pressure rod structure (6) which can be inserted into the corresponding pressure rod groove (3-2) and is used for pressing the tensioning wire mesh (7-2); each tensioning installation structure (2) is provided with a tensioning member (5) for pressing downward the corresponding tensioning pressure rod structure (6) and locking its position; and a plurality of tensioning members (6) located between two sets of tensioning installation structures (2) are installed on the base plate structure (3). The pressing clamp (4) is used to press the cover plate assembly (7) onto the substrate structure (3); the ratchet tensioning device (1) comprises a fixed mounting frame (1-4) detachably connected to the substrate structure (3); a ratchet shaft (1-1) arranged transversely is rotatably connected to the fixed mounting frame (1-4); a plurality of tensioning ratchets (1-3) distributed along the axial direction thereof are mounted on the ratchet shaft (1-1); the tip of each tensioning ratchet (1-3) can be embedded in the mesh of the wire mesh (7-2); a plurality of through holes evenly distributed along the circumference are opened on each tensioning ratchet (1-3); and a stop support rod (1-2) detachably connected to the fixed mounting frame (1-4) and can be inserted into the corresponding through holes of each tensioning ratchet (1-3); the teeth of the plurality of tensioning ratchets (1-3) in the two groups of ratchet tensioning devices (1) face in opposite directions.

2. The single-sided tensioning structural tooling according to claim 1, characterized in that: The tensioning pressure rod structure (6) comprises a T-shaped pull rod (6-2) inserted into a through hole opened on the tensioning installation structure (2), a transversely arranged tensioning pressure rod member (6-1) is installed at the lower end of the T-shaped pull rod (6-2), and the tensioning pressure rod member (6-1) can be embedded in the corresponding pressure rod groove (3-2).

3. The single-sided tensioning structural tooling according to claim 1, characterized in that: The tensioning installation structure (2) comprises a mounting plate body (2-3) detachably connected to a base plate structure (3); a through slot (2-2) is provided on the mounting plate body (2-3) and connects two opposite side surfaces thereof and allows an end of a wire mesh (7-2) to pass through; and a pressure rod accommodating slot (2-1) is provided on the mounting plate body (2-3) and is used to accommodate a tensioning pressure rod structure (6) and is connected to the through slot (2-2).

4. The single-sided tensioning structural tooling according to claim 3, characterized in that: The tensioning members (5) are a plurality of tensioning bolts which are threadedly connected to the tensioning installation structure (2) and contact the tops of the corresponding tensioning pressure rod members (6-1).

5. The single-sided tensioning structural tooling according to claim 1, characterized in that: The substrate structure (3) also includes a substrate body (3-1), two groups of pressure rod grooves (3-2) are respectively located at two ends of the substrate body (3-1), a frame groove (3-3) matching the cover plate frame (7-1) is opened on the top surface of the substrate body (3-1), and a plurality of operation through holes (3-4) are opened in the frame groove (3-3).

6. The single-sided tensioning structural tooling according to claim 3, characterized in that: The fixed mounting frame (1-4) is fixedly connected to the mounting plate body (2-3), and the mounting plate body (2-3) is detachably connected to the base plate structure (3) via bolts.

7. The single-sided tensioning structural tooling according to claim 1, characterized in that: Each tensioning ratchet (1-3) is connected to a corresponding ratchet shaft (1-1) via a locking nut, and the axial projection profiles of a plurality of tensioning ratchets (1-3) mounted on each ratchet shaft (1-1) completely overlap.

8. The single-sided tensioning structural tooling according to claim 1, characterized in that: The longitudinal section of each pressure rod groove (3-2) is a funnel structure that is wide at the top and narrow at the bottom.

9. The single-sided tensioning structural tooling according to claim 1, characterized in that: Each pressing clamp (4) is a horizontal clamp.

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