Parallel clamp connecting device

Abstract

The utility model discloses a parallel clamp connecting device, which is characterized in that a connecting block is provided with a strip-shaped guide rail accommodating space for accommodating a parallel clamp guide rail, and the guide rail accommodating space penetrates through the connecting block; at least two guide rail positioning holes which are perpendicular to the length direction of the guide rail containing space and penetrate through the guide rail containing space are formed in the two sides of the guide rail containing space of the connecting block, and guide rail positioning pieces for fixing parallel clamp guide rails are arranged in the guide rail positioning holes. According to the parallel clamp connecting device, through combined use of the two parallel clamps, the clamping range of the parallel clamps can be greatly expanded, meanwhile, reverse clamping can be carried out, expansion of the clamping function of the parallel clamps is achieved, and the parallel clamp connecting device has very high practical value.

Description

Technical Field

[0001] This utility model relates to the field of clamping tool technology, and in particular to a parallel clamp connecting device. Background Technology

[0002] Parallel clamps are commonly used clamping tools for clamping, supporting, or supporting objects. They typically include a guide rail, a fixed clamp at one end of the guide rail, and a movable clamp that slides along the guide rail. The movable clamp faces the fixed clamp for clamping, while the movable clamp faces away from the fixed clamp for support. Due to the limited length of the guide rail, it is difficult for a single clamp to hold or support large objects, resulting in existing parallel clamps often having limited functionality and application range. Chinese patent document CN118342431A, published on July 16, 2024, discloses a novel F-clamp, including a sliding mechanism. A clamping mechanism is movably connected to the sliding mechanism, and a fixed column is fixedly connected to the bottom outer wall of the sliding mechanism. A pressing mechanism is provided on both the fixed column and the clamping mechanism. The sliding mechanism includes a U-shaped slide rod, and an extension slide rod is movably engaged at one end of the U-shaped slide rod. Rubber limiting sleeves are fitted onto the outer walls of both the U-shaped slide rod and the extension slide rod. A first locking block is fixedly connected to one end of the extension slide rod, and a compression airbag is fixedly connected to one side of the outer wall of the first locking block. A rubber pad is attached to the opposite side of the outer wall of the first locking block, and first locking strips are symmetrically connected to the opposite sides of the outer walls of the first locking block. The inner walls of both ends of the U-shaped slide rod are respectively provided with external locking grooves, which can adjust the slide length according to the working environment while maintaining stability, and achieve a higher adaptability through deformation. However, this clamping device extends the length of the slide by combining an extended slide rod and a U-shaped slide rod to meet the clamping requirements of thicker workpieces or plates. At the same time, under the action of rubber pads and compression airbags, the stability of the clamping is ensured by increasing friction. Not only is the structure complex and costly, but the extended clamping device structure is also not stable enough and has poor pressure resistance. Utility Model Content

[0003] The purpose of this invention is to solve the problem that existing parallel clamps often have limited functionality and scope of use because the movable and fixed clamps of one clamp are difficult to hold or support large objects. The invention provides a parallel clamp connecting device that can significantly expand the clamping range of the parallel clamp by combining two parallel clamps, and can also perform reverse clamping, thereby expanding the clamping function of the parallel clamp.

[0004] The technical solution adopted by this utility model to solve the above-mentioned technical problems is a parallel clamp connecting device. The connecting device includes a connecting block. The connecting block is provided with a strip-shaped guide rail receiving space for accommodating the parallel clamp guide rail. The guide rail receiving space passes through the connecting block. At least two guide rail positioning holes are provided on both sides of the guide rail receiving space, which are perpendicular to the length direction of the guide rail receiving space and pass through the guide rail receiving space. A guide rail positioning component for fixing the parallel clamp guide rail is provided in the guide rail positioning hole.

[0005] The connecting block is the core component of the parallel clamp connecting device, used to connect the parallel clamp guide rails and set up other components. The connecting block has a strip-shaped guide rail receiving space for the parallel clamp guide rails to pass through. This space runs through the connecting block and is in a straight line, allowing the guide rails to be fully inserted and fixed, ensuring correct insertion and fixation within the connecting block, and ensuring alignment of the guide rails within the guide rail receiving space. Guide rail positioning holes are located on both sides of the guide rail receiving space and are perpendicular to the length of the space. Each guide rail positioning hole passes through the space and is used to place guide rail positioning components to fix the parallel clamp guide rails within the space. These positioning components are used to fix the parallel clamp guide rails and are typically fasteners such as bolts, pins, or pressure bars. By inserting the guide rail positioning components into the guide rail positioning holes, the position of the guide rails is effectively fixed, ensuring that the guide rails will not move or slide during use, thus guaranteeing the stability of the parallel clamp. In use, the guide rail of the parallel clamp is inserted into the strip guide rail receiving space on the connecting block, and the guide rail positioning piece is placed in the guide rail positioning hole to fix the parallel clamp guide rail, ensuring that the guide rail is firmly fixed on the connecting block. In this way, the parallel clamp connecting device of this utility model can use two parallel clamps in combination. At the same time, the clamping surfaces on the two parallel clamps can be arranged opposite each other for forward clamping, or they can be arranged in opposite directions for reverse clamping, which not only greatly expands the clamping range, but also expands the clamping function.

[0006] Preferably, the guide rail accommodating space is an accommodating hole with a cross-section adapted to the cross-section of the parallel clamping guide rail, or an accommodating groove with a top opening. A support edge is formed at the bottom of the connecting block, and the support edge is symmetrically arranged on both sides of the bottom of the connecting block, with a groove formed between the two support edges at the bottom. The support edge provides support for the stable placement of the connecting block.

[0007] Preferably, the connecting blocks at both ends of the guide rail positioning hole are equipped with a button mechanism. The button mechanism includes button sleeves on both sides of the connecting block, with a button inside one button sleeve and a positioning pin seat inside the button sleeve on the other side of the connecting block, which is linked to the button. The positioning pin seat has a guide rail positioning pin corresponding to the guide rail positioning hole and inserted into the guide rail receiving area. A return spring is provided between the button and the connecting block. Using a button mechanism provides convenient operation for locking or unlocking the parallel guide rail, improving efficiency.

[0008] Preferably, the button and the positioning pin are fixedly connected by a support and screw. The connecting block is provided with a support hole corresponding to the support. When the button is pressed, the reset spring is compressed, the positioning pin moves outward, and the positioning pin exits the guide rail receiving area.

[0009] Preferably, the guide rail positioning component is a positioning bolt that passes through the guide rail positioning hole, and support bars are provided on both sides of the bottom support edge of the connecting block, and the support bars are sleeved on the support edge.

[0010] Preferably, the guide rail accommodating space on the connecting block is an accommodating groove, the guide rail positioning hole is an oblong hole, the grooves at both ends of the connecting block are provided with adjusting bolts, the bottom of the groove is provided with a screw hole communicating with the accommodating groove, and the adjusting bolt is screwed into the screw hole.

[0011] Preferably, a support pad is provided on the support edge at the bottom of the connecting block, and the two ends of the support pad form a recessed area. The adjusting end of the adjusting bolt is located in the recessed area, and the front end of the adjusting bolt passes through the support pad and is screwed into the screw hole.

[0012] Preferably, the guide rail accommodating space on the connecting block is an accommodating groove, and a plug hole penetrating the bottom of the groove is provided at the bottom of the groove in the middle. A plug block is provided in the accommodating groove, and a spring piece is provided on the plug block. The front end of the plug block is inserted into the plug hole.

[0013] Preferably, the guide rail positioning hole on one side of the connecting block is a screw hole, and an elastic mechanism is provided at the screw hole. The elastic mechanism includes a sleeve that is screwed to the guide rail positioning hole. A pull rod is provided inside the sleeve. One end of the pull rod extends out of the bottom of the sleeve and is provided with a pull ring. A pressure rod is sleeved on the other end of the pull rod. A compression spring is provided on the outer periphery of the pull rod between the pressure rod and the bottom of the sleeve.

[0014] Preferably, the connecting block is a profile structure with a uniform cross-sectional shape, and the guide rail accommodating space extends along the length of the connecting block. Using aluminum profiles with a uniform cross-sectional shape to manufacture the connecting block can significantly reduce processing costs.

[0015] Preferably, the guide rail positioning hole is an oblong hole extending in the height direction of the connecting block. This provides the guide rail positioning component within the positioning hole with more room to move, facilitating alignment and assembly, and also enabling fine-tuning of the position of the parallel clamp guide rail.

[0016] The beneficial effects of this utility model are: it effectively solves the problem that existing parallel clamps have a single movable clamp and a fixed clamp that are difficult to clamp or support large objects, resulting in the parallel clamps usually having a single function and limited scope of use. The parallel clamp connecting device of this utility model can greatly expand the clamping range of the parallel clamp by using two parallel clamps in combination. At the same time, it can perform reverse clamping, thereby expanding the clamping function of the parallel clamp and has high practical value. Attached Figure Description

[0017] Figure 1 This is a three-dimensional structural schematic diagram of one embodiment of the present utility model.

[0018] Figure 2 This is a side view of Embodiment 1 of the present utility model.

[0019] Figure 3 yes Figure 2 The left view.

[0020] Figure 4 yes Figure 2 A sectional view along line AA.

[0021] Figure 5 yes Figure 2 BB-direction sectional view.

[0022] Figure 6 This is a three-dimensional structural schematic diagram of one embodiment 2 of the present utility model.

[0023] Figure 7 This is a schematic diagram of a structure of Embodiment 2 of this utility model.

[0024] Figure 8 This is a three-dimensional structural schematic diagram of one embodiment 3 of the present utility model.

[0025] Figure 9 This is a structural schematic diagram of embodiment 3 of the present invention.

[0026] Figure 10 This is a three-dimensional structural schematic diagram of one embodiment 4 of the present utility model.

[0027] Figure 11 This is a structural schematic diagram of embodiment 4 of the present invention.

[0028] Figure 12 This is a structural cross-sectional view of one embodiment 4 of this utility model.

[0029] Figure 13 This is a three-dimensional structural diagram of a plug block according to Embodiment 4 of this utility model.

[0030] Figure 14This is a three-dimensional structural schematic diagram of Embodiment 5 of this utility model.

[0031] Figure 15 This is a structural cross-sectional view of one embodiment of the present utility model, 5.

[0032] Figure 16 This is a three-dimensional structural diagram of the usage state of Embodiment 1 of this utility model.

[0033] In the diagram: 1. Connecting block, 2. Parallel clamp guide rail, 3. Guide rail receiving space, 4. Guide rail positioning hole, 5. Support edge, 6. Groove, 7. Button mechanism, 8. Button sleeve, 9. Button, 10. Positioning pin seat, 11. Guide rail positioning pin, 12. Return spring, 13. Support column, 14. Screw, 15. Positioning bolt, 16. Support bar, 17. Adjusting bolt, 18. Support pad, 19. Recessed area, 20. Plug, 21. Spring, 22. Elastic mechanism, 23. Sleeve, 24. Pull rod, 25. Pull ring, 26. Pressure rod, 27. Compression spring, 28. Fixed clamp, 29. Movable clamp, 30. Handle. Detailed Implementation

[0034] The specific implementation methods of the present invention will be further described below through examples and in conjunction with the accompanying drawings.

[0035] Example 1

[0036] exist Figures 1-5 In the illustrated embodiment 1, a parallel clamp connecting device includes a connecting block 1, which is a profile structure with a uniform cross-sectional shape. The connecting block 1 has a strip-shaped guide rail receiving space 3 for accommodating parallel clamp guide rails. The guide rail receiving space extends along the length direction of the connecting block and penetrates through the connecting block 1. Two guide rail positioning holes 4 (see...) are provided on both sides of the guide rail receiving space 3, perpendicular to the length direction of the guide rail receiving space 3 and passing through the guide rail receiving space. Figure 4 The guide rail positioning hole 4 is provided with a guide rail positioning component for fixing the parallel guide rail.

[0037] The connecting block is the core component of the entire device, used to connect the parallel clamp guide rails and set up other components. This embodiment uses aluminum profiles with a uniform cross-sectional shape to manufacture the connecting block, significantly reducing processing costs. A strip-shaped guide rail receiving space is provided on the connecting block for the parallel clamp guide rail to pass through. This space runs through the connecting block in a straight line, allowing the guide rail to be fully inserted and fixed, ensuring the guide rail is correctly inserted and fixed in the connecting block, and also ensuring the guide rail is aligned within the guide rail receiving space. Guide rail positioning holes are located on both sides of the guide rail receiving space and are perpendicular to the length direction of the guide rail receiving space. Each guide rail positioning hole passes through the guide rail receiving space and is used to place guide rail positioning components to fix the parallel clamp guide rail within the guide rail receiving space. By inserting the guide rail positioning components into the guide rail positioning holes, the position of the guide rail can be effectively fixed, ensuring that the guide rail will not move or slide during use, thus guaranteeing the stability of the parallel clamp. In use, the parallel clamp guide rail is inserted into the strip-shaped guide rail receiving space on the connecting block, and the guide rail positioning components are placed in the guide rail positioning holes to fix the parallel clamp guide rail, ensuring the guide rail is firmly fixed to the connecting block. The stability of the guide rails on both sides can be ensured by at least two guide rail positioning holes and guide rail positioning components; the layout of the strip guide rail accommodating space and guide rail positioning holes makes the installation process simple and quick; it can adapt to different sizes and types of parallel clamp guide rails, has strong applicability, improves the efficiency of parallel clamp use, and also enhances its reliability in various application scenarios.

[0038] In this embodiment, the guide rail receiving space 3 is a receiving hole whose cross-section matches the cross-section of the parallel clamp guide rail. The receiving hole is configured to have a cross-section that matches the parallel clamp guide rail. By enclosing the side of the guide rail, the connecting block and the parallel clamp guide rail are connected more tightly, preventing relative displacement between the connecting block and the parallel clamp guide rail in the vertical direction. A support edge 5 is formed at the bottom of the connecting block 1, and the support edges 5 are symmetrically arranged on both sides of the bottom of the connecting block 1. A groove 6 is formed between the two support edges 5 at the bottom. In this embodiment, the guide rail receiving space 3 is an oblong hole, and the cross-sectional shape of the guide rail receiving space 3 matches the cross-sectional shape of the parallel clamp guide rail. In this way, the guide rail can be tightly inserted into the receiving space, ensuring that it will not wobble during use and ensuring that the parallel clamp guide rails on both sides are aligned in a straight line after docking. In this embodiment, the guide rail receiving space is a closed receiving hole on the outer periphery. This form is suitable for situations where the cross-sections of the parallel clamp guide rails on both sides are completely identical, and it also facilitates docking. The guide rail receiving space can also be a receiving groove with an open top. This form can accommodate situations where the cross-sections of the parallel clamp guide rails on both sides have a certain deviation. Both forms can be selected according to specific application requirements. The symmetrical support edges on both sides of the bottom of the connecting block facilitate the placement or support positioning of the parallel clamp connecting device. The groove formed between the two support edges on the bottom can save material, and the groove can also be used to accommodate other components.

[0039] In this embodiment, a button mechanism 7 is provided on the connecting blocks at both ends of the guide rail positioning hole. The button mechanism 7 includes button sleeves 8 on both sides of the connecting block 1. A button 9 is provided in the button sleeve on one side of the connecting block 1, and a positioning pin seat 10 linked with the button is provided in the button sleeve on the other side of the connecting block 1. The positioning pin seat 10 is provided with a guide rail positioning pin 11 corresponding to the guide rail positioning hole 4 and passing through the guide rail receiving area 3. A return spring 12 is provided between the button 9 and the connecting block 1. The button 9 and the positioning pin seat 10 are fixedly connected by a support column 13 and a screw 14. The connecting block 1 is provided with a support hole corresponding to the support column 13. When the button 9 is pressed, the return spring 12 is compressed, the positioning pin seat 10 moves outward, and the guide rail positioning pin 11 exits the guide rail receiving area 3. Button sleeves 8 are located on both sides of the connecting block 1, with one button sleeve 8 on each side. Each button sleeve 8 includes a base plate fixed to the connecting block 1. The base plate is fixed to the connecting block by screws. The button sleeve is integral with the base plate. Each button mechanism consists of two button sleeves. To align with the parallel guide rails at both ends, each connecting block has at least two button mechanisms, with each button mechanism fixed to one end of the parallel guide rail. The button is located inside the button sleeve on one side of the connecting block and is used to press and trigger the button mechanism. The positioning pin is located inside the button sleeve on the other side of the connecting block and is linked to the button. In this embodiment, the button and the positioning pin are fixedly connected by a support column and screws. This connection method ensures the linkage between the button and the positioning pin, allowing the button's movement to be directly transmitted to the positioning pin. The connecting block has support holes corresponding to the support columns, providing a movement path for the support columns and ensuring that the button and the positioning pin maintain linear motion during movement. In this embodiment, each button mechanism has two support columns and corresponding support holes, located on the lower side of the button (see...). Figure 2 Figure 5 When the button is pressed, the positioning pin seat moves accordingly. The guide rail positioning pin is set on the positioning pin seat and corresponds to the guide rail positioning hole. The return spring is set between the center of the button and the connecting block. The return spring can make the button automatically return to the initial position after the button is released. In the initial state (i.e., when the button is not pressed), the end of the guide rail positioning pin is inserted into the guide rail receiving area. When the button is pressed, the button will push the positioning pin seat to move, and the guide rail positioning pin on the positioning pin seat will move accordingly and exit from the guide rail receiving area. At the same time, the return spring is compressed. At this time, the parallel clamp guide rail is placed into the guide rail receiving area. The end of the parallel clamp guide rail has a through hole that matches the guide rail positioning pin. When the button is released, the button returns to its original position under the elastic force of the return spring, and at the same time, it drives the positioning pin seat to return to its original position. The guide rail positioning pin re-enters the guide rail receiving area and also enters the through hole set in advance at the end of the parallel clamp guide rail, thereby realizing the precise positioning and fixation of the parallel clamp guide rail.

[0040] This parallel clamp connection device with a button mechanism allows for quick positioning and fixing of the parallel clamp guide rail simply by pressing a button, making operation very convenient. The cooperation between the guide rail positioning pin and the guide rail positioning hole ensures accurate positioning of the guide rail, improving the docking accuracy. The design of the reset spring allows the button to automatically return to the initial position, reducing operation steps and greatly improving work efficiency.

[0041] Figure 16 This is a schematic diagram of a parallel clamp connection structure using the parallel clamp connection device of this embodiment. One parallel clamp includes a parallel clamp guide rail 2 and a fixed clamp 28 disposed at one end of the parallel clamp guide rail 2. The other parallel clamp includes a parallel clamp guide rail 2 and a fixed clamp disposed at one end of the parallel clamp guide rail 2. A movable clamp 29 is also provided on the parallel clamp guide rail 2, and a handle 30 for moving the movable clamp 29 is provided on the movable clamp 29. The ends of the parallel clamp guide rails of the two parallel clamps are connected by the parallel clamp connection device of this embodiment, that is, another guide rail is added along the extension direction of one guide rail. At the connecting block 1, the connection point of the two guide rails is fixed by the button mechanism 7 disposed on both sides of the connecting block 1. In this way, the parallel clamp connection device of this utility model can combine two parallel clamps for use. At the same time, the clamping surfaces on the two parallel clamps can be arranged opposite each other for forward clamping or reverse clamping, which not only greatly expands the clamping range, but also expands the clamping function.

[0042] Example 2

[0043] exist Figure 6 Figure 7 In Embodiment 2 shown, a parallel clamp connecting device includes a connecting block 1, which is an aluminum profile with a uniform cross-sectional shape. The connecting block 1 has a strip-shaped guide rail receiving space 3 for accommodating the parallel clamp guide rail. The guide rail receiving space 3 is a receiving groove with an open top, whose cross-section matches the cross-section of the parallel clamp guide rail. The guide rail receiving space 3 extends along the length of the connecting block and penetrates the connecting block 1. Two guide rail positioning holes are provided on both sides of the receiving groove of the connecting block 1, perpendicular to the length of the guide rail receiving space 3 and passing through the receiving groove. Guide rail positioning components (not shown in the figure) are provided in the guide rail positioning holes to fix the parallel clamp guide rail. In this embodiment, the guide rail positioning component is a positioning bolt 15 inserted into the guide rail positioning hole. The positioning bolt 15 achieves precise positioning and fixation of the parallel clamp guide rail and the connecting block by inserting into the guide rail positioning hole. Support strips 16 are provided on the support edges 5 on both sides of the bottom of the connecting block 1. The support strips 16 are sleeved on the support edges 5. The support strips provide support for the connecting block, facilitating stable placement of the connecting block.

[0044] When the parallel clamp guide rail needs to be fixed, first place the parallel clamp guide rail into the guide rail receiving space, then pass the positioning bolts through the positioning holes of the guide rail and the pre-set fixing holes on the parallel clamp guide rail and tighten them to firmly fix the parallel clamp guide rail to the connecting block. When it is necessary to remove the parallel clamp guide rail, loosen the positioning bolts, and the parallel clamp guide rail can be removed from the connecting block. This simple tightening or loosening of the positioning bolts is all it takes to fix or remove the guide rail, making the operation very convenient. Support bars are fitted onto the support edges on both sides of the bottom of the connecting block, providing stable support for the connecting block. Through the use of positioning bolts, the parallel clamp guide rail can achieve high-precision positioning and fixing.

[0045] Example 3

[0046] exist Figure 8 Figure 9 In Embodiment 3 shown, a parallel clamp connecting device includes a connecting block 1, which is an aluminum profile with a uniform cross-sectional shape. The connecting block 1 has a strip-shaped guide rail receiving space 3 for accommodating parallel clamp guide rails. The guide rail receiving space extends along the length of the connecting block and penetrates through the connecting block 1. Two guide rail positioning holes 4 are provided on both sides of the guide rail receiving space 3, perpendicular to the length of the guide rail receiving space 3 and passing through it. The guide rail positioning holes are oblong holes extending in the height direction of the connecting block. Guide rail positioning elements (not shown in the figure) for fixing the parallel clamp guide rails are provided in the guide rail positioning holes 4. In this embodiment, the guide rail receiving space 3 on the connecting block 1 is a receiving groove, and the guide rail positioning holes 4 are oblong holes (see...). Figure 8The length of the oblong hole is along the height of the connecting block 1. A support pad 18 is provided on the support edge at the bottom of the connecting block 1. The two ends of the support pad form recessed areas 19. The adjusting end of the adjusting bolt 17 is located in the recessed area 19. The front end of the adjusting bolt 17 passes through the support pad 18 and is screwed into the screw hole. In this embodiment, the adjusting end of the adjusting bolt 17 is a round plate with knurled outer edge, which can be easily rotated. The adjusting bolt can be rotated to adjust the position of the guide rail in the receiving groove, thereby realizing fine adjustment of the guide rail position. When it is necessary to adjust the position of the guide rail, the guide rail positioning part (not shown in the figure) used to fix the parallel clamp guide rail can be loosened, so that the parallel clamp guide rail can move within a certain range of the receiving groove. Then, after adjusting the parallel clamp guide rail to the appropriate position by adjusting the adjusting bolt, tighten the adjusting bolt to fix the guide rail in the receiving groove. Through the fine adjustment function of the adjusting bolt, the precise control of the guide rail position can be achieved. In this embodiment, a support pad is provided on the support edge at the bottom of the connecting block. The support pad has recessed areas at both ends. The adjusting end of the adjusting bolt is located within the recessed areas at both ends of the support pad, and the front end of the adjusting bolt passes through the support pad and is screwed into the screw hole at the bottom of the groove. The support pad, located on the support edge at the bottom of the connecting block, serves as a buffer and provides protection. Simultaneously, the adjusting end of the adjusting bolt is located within the recessed areas at both ends of the support pad, ensuring the normal rotation of the adjusting bolt. The front end of the adjusting bolt passes through the support pad and is screwed into the screw hole at the bottom of the groove. By rotating the adjusting bolt, the position of the parallel clamping guide rail within the receiving groove can be adjusted.

[0047] The present invention has an adjustment mechanism configured below the connecting block. The adjustment mechanism includes a turntable disposed at the bottom of the connecting block and a stud on the turntable. The stud penetrates the bottom of the connecting block and extends into the receiving space of the connecting block. Thus, when the stud rotates with the turntable, the stud moves up and down to abut against the bottom of the guide rail to adjust the height of the guide rail. By adjusting the height of the guide rail, it can achieve better levelness and improve the levelness of the parallel clamp guide rail.

[0048] Example 4

[0049] In Embodiment 4, a parallel clamp connecting device includes a connecting block made of aluminum profile with a uniform cross-sectional shape. The connecting block has a strip-shaped guide rail receiving space for accommodating parallel clamp guide rails. The guide rail receiving space extends along the length of the connecting block and penetrates it. Two guide rail positioning holes are provided on both sides of the guide rail receiving space, perpendicular to the length of the space and passing through it. These guide rail positioning holes are oblong holes extending in the height direction of the connecting block. Guide rail positioning components for fixing the parallel clamp guide rails are provided within these holes. In this embodiment, the guide rail receiving space on the connecting block is a receiving groove, and the guide rail positioning holes are oblong holes with their length direction along the height direction of the connecting block. Adjusting bolts are provided in the grooves at both ends of the connecting block, and threaded holes communicating with the receiving groove are provided at the bottom of the grooves. The adjusting bolts are screwed into the threaded holes. Compared to Embodiment 3, this embodiment omits the support pad and is a simplified structure of Embodiment 3.

[0050] Example 5

[0051] exist Figures 10-13 In the illustrated embodiment 5, a parallel clamp connecting device includes a connecting block 1, which is an aluminum profile with a uniform cross-sectional shape. The connecting block 1 has a strip-shaped guide rail receiving space 3 for accommodating parallel clamp guide rails. The guide rail receiving space extends along the length of the connecting block and penetrates through the connecting block 1. Two guide rail positioning holes 4 (see...) are provided on both sides of the guide rail receiving space 3, perpendicular to the length of the guide rail receiving space 3 and passing through it. Figure 10 The guide rail positioning hole 4 is an oblong hole extending in the height direction of the connecting block. A guide rail positioning component (not shown in the figure) for fixing the parallel guide rail is provided inside the guide rail positioning hole 4. In this embodiment, the guide rail receiving space 3 on the connecting block 1 is a receiving groove. A plug hole penetrating the bottom of the groove is provided at the bottom of the groove in the middle (see...). Figure 12 The receiving groove 3 is provided with a plug 20, which is a hollow rectangular block. The plug 20 is provided with spring pieces 21 on both sides (see...). Figure 13 The front end of the plug 20 is inserted into the plug hole. In this embodiment, a plug is provided in the receiving groove, and a spring piece is provided on the plug. The front end of the plug is inserted into the plug hole. This design prevents the guide rail from overextending, facilitates guide rail positioning, and enables quick connection, making the installation and disassembly of the guide rail more convenient and faster. The spring piece design gives the plug a certain degree of elasticity, which can buffer and fix the guide rail during installation or disassembly.

[0052] Example 6

[0053] exist Figures 14-15In Embodiment 6 shown, a parallel clamp connecting device includes a connecting block 1, which is an aluminum profile with a uniform cross-sectional shape. The connecting block 1 has a strip-shaped guide rail receiving space 3 for accommodating the parallel clamp guide rail. The guide rail receiving space 3 penetrates the connecting block 1. In this embodiment, the guide rail receiving space 3 is a receiving hole whose cross-section matches the cross-section of the parallel clamp guide rail (not shown in the figure). The receiving hole is configured to have a cross-section adapted to the parallel clamp guide rail. By enclosing the side of the guide rail, the connecting block and the parallel clamp guide rail are connected more tightly, preventing relative displacement between the connecting block and the parallel clamp guide rail in the vertical direction. A support edge 5 is formed at the bottom of the connecting block 1, symmetrically arranged on both sides of the bottom of the connecting block 1. In this embodiment, the guide rail receiving space 3 is an oblong hole adapted to the cross-section of the parallel clamp guide rail. Two guide rail positioning holes 4 (see figure) are provided on both sides of the guide rail receiving space 3, perpendicular to the length direction of the guide rail receiving space 3 and passing through the guide rail receiving space. Figure 15 In this embodiment, the guide rail positioning hole on one side of the connecting block is a screw hole, and an elastic mechanism 22 is provided at the screw hole (see...). Figure 14 The elastic mechanism 22 includes a sleeve 23 screwed to the guide rail positioning hole 4. A pull rod 24 is provided inside the sleeve. One end of the pull rod 24 extends out of the bottom of the sleeve 23 and has a pull ring 25. The other end of the pull rod 24 is sleeved with a pressure rod 26. A compression spring 27 is provided on the outer periphery of the pull rod 24 between the pressure rod 26 and the bottom of the sleeve 23. In this embodiment, the parallel clamp connecting device only requires pulling the pull ring to quickly fix the parallel clamp guide rail, making operation very simple. Pulling out the pull ring and inserting it into the parallel clamp guide rail, and releasing the pull ring, completes the fixing of the parallel clamp guide rail. The design of the compression spring allows the pressure rod to automatically return to its initial position, reducing operation steps and greatly improving work efficiency.

[0054] In addition, the pressure bar in this embodiment may not enter the parallel clamp guide rail. That is, the pressure bar can be applied directly to the parallel clamp guide rail to fix the parallel clamp guide rail. The static friction generated between the elastic pressure bar and the guide rail limits the length of the guide rail. This is a modified structure of this embodiment.

[0055] In addition to the above embodiments, within the scope disclosed in the claims and specification of this utility model, the technical features or technical data of this utility model can be reselected and combined to form new embodiments. These can be achieved by those skilled in the art without creative effort. Therefore, these embodiments not described in detail in this utility model should also be regarded as specific embodiments of this utility model and within the protection scope of this utility model.

Claims

1. A parallel clamp connecting device, characterized in that, The connecting device includes a connecting block, which has a strip-shaped guide rail receiving space for accommodating a parallel clamping guide rail. The guide rail receiving space extends through the connecting block. At least two guide rail positioning holes are provided on both sides of the guide rail receiving space, which are perpendicular to the length direction of the guide rail receiving space and pass through the guide rail receiving space. Guide rail positioning components for fixing the parallel clamping guide rail are provided in the guide rail positioning holes.

2. The parallel clamp connecting device according to claim 1, characterized in that, The guide rail accommodating space is an accommodating hole or a top-opening accommodating groove whose cross-section is adapted to the cross-section of the parallel clamping guide rail. A support edge is formed at the bottom of the connecting block. The support edge is symmetrically arranged on both sides of the bottom of the connecting block, and a groove is formed between the two support edges at the bottom.

3. The parallel clamp connecting device according to claim 1, characterized in that, The guide rail positioning hole has a button mechanism on the connecting blocks at both ends. The button mechanism includes button sleeves on both sides of the connecting block. A button is provided in the button sleeve on one side of the connecting block, and a positioning pin seat that is linked to the button is provided in the button sleeve on the other side of the connecting block. The positioning pin seat has a guide rail positioning pin that corresponds to the guide rail positioning hole and passes through the guide rail receiving area. A return spring is provided between the button and the connecting block.

4. The parallel clamp connecting device according to claim 3, characterized in that, The button and the positioning pin are fixedly connected by a support column and screws. The connecting block is provided with a support column hole corresponding to the support column. When the button is pressed, the reset spring is compressed, the positioning pin moves outward, and the guide rail positioning pin exits the guide rail receiving area.

5. The parallel clamp connecting device according to claim 2, characterized in that, The guide rail positioning component is a positioning bolt that passes through the guide rail positioning hole. Support bars are provided on both sides of the bottom of the connecting block, and the support bars are sleeved on the support sides.

6. The parallel clamp connecting device according to claim 2, characterized in that, The guide rail accommodating space on the connecting block is an accommodating groove, the guide rail positioning hole is an oblong hole, the grooves at both ends of the connecting block are provided with adjusting bolts, the bottom of the groove is provided with a screw hole that communicates with the accommodating groove, and the adjusting bolt is screwed into the screw hole.

7. The parallel clamp connecting device according to claim 6, characterized in that, A support pad is provided on the support edge at the bottom of the connecting block. The two ends of the support pad form recessed areas. The adjusting end of the adjusting bolt is located in the recessed area. The front end of the adjusting bolt passes through the support pad and is screwed into the screw hole.

8. The parallel clamp connecting device according to claim 2, characterized in that, The guide rail accommodating space on the connecting block is an accommodating groove. A plug hole penetrating the bottom of the groove is provided at the bottom of the groove in the middle. A plug block is provided in the accommodating groove. A spring piece is provided on the plug block. The front end of the plug block is inserted into the plug hole.

9. The parallel clamp connecting device according to claim 1, characterized in that, The guide rail positioning hole on one side of the connecting block is a screw hole, and an elastic mechanism is provided at the screw hole. The elastic mechanism includes a sleeve that is screwed to the guide rail positioning hole. A pull rod is provided inside the sleeve. One end of the pull rod extends out of the bottom of the sleeve and is provided with a pull ring. A pressure rod is sleeved on the other end of the pull rod. A compression spring is provided on the outer periphery of the pull rod between the pressure rod and the bottom of the sleeve.

10. The parallel clamp connecting device according to any one of claims 1-9, characterized in that, The connecting block is a profile structure with a uniform cross-sectional shape, and the guide rail accommodating space extends along the length direction of the connecting block.

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