Sandwich biscuit type modular flat tongs

Abstract

The utility model discloses sandwich biscuit type modularized flat tongs which comprise two cylindrical pins, keys are movably connected to the surfaces of the cylindrical pins in a sleeved mode, fixed-mouth tongs located above the keys are movably connected to the surfaces of the cylindrical pins in a sleeved mode, and a right guide rail and a left guide rail which are located below the keys are movably connected to the surfaces of the cylindrical pins in a sleeved mode. The outer surface of the key is movably connected with the inner surfaces of the fixed mouth pliers, the right guide rail and the left guide rail, guide rail supporting plates are movably installed at the bottoms of the right guide rail and the left guide rail, and left inner hexagon screws are rotatably installed at the bottoms of the guide rail supporting plates at equal intervals. According to the sandwich biscuit type modular flat tongs, in the daily use process, an operator uses a cylindrical pin and a key to position the fixed jaw tongs on the left guide rail and the right guide rail of the base, then a left inner hexagon screw penetrates through a guide rail supporting plate to fasten the fixed jaw tongs on the left guide rail and the right guide rail, and then a key bar is used for positioning the movable jaw tongs on a nut.

Description

TECHNICAL FIELD

[0001] The utility model relates to the technical field of flat mouth tongs, in particular to a sandwich biscuit type modular flat mouth tongs. BACKGROUND

[0002] Flat mouth tongs are also known as machine vices, which are general fixtures commonly used for installing small workpieces. They are random accessories of milling machines and drilling machines, and are fixed on the workbench of the machine to clamp workpieces for cutting processing. Flat mouth tongs are mainly composed of a body seat, a movable jaw, a nut, a screw rod and other components. The working principle is that the screw rod is rotated by a wrench, and the movable jaw is moved by the screw rod nut, thereby achieving clamping and loosening of the workpiece. Flat mouth tongs are widely used in planing machines, milling machines, drilling machines, grinding machines and slotting machines, and are suitable for processing various planes, grooves and angles. The advantages include simplicity, ease of use and strong operability. However, the workpieces with insufficient rigidity may be deformed when clamped. When using flat mouth tongs, the following points should be noted: the machined surface of the workpiece must be higher than the jaw, otherwise the workpiece needs to be raised with parallel iron pads. In order to prevent the workpiece from loosening during planing, a relatively flat surface must be tightly attached to the iron pad and the jaw. A copper sheet is placed on the jaw when clamping the workpiece to protect the machined surface. Therefore, a sandwich biscuit type modular flat mouth tongs is needed.

[0003] When operating personnel clamp and cut workpieces, corresponding flat mouth tongs are often used. Although existing flat mouth tongs can achieve the purpose of clamping and cutting, they are mostly integrated in actual use, which is not convenient for disassembly and installation, and the stability is poor. Long-term use may reduce the accuracy of workpiece processing. UTILITY MODEL CONTENTS

[0004] The utility model aims to provide a sandwich biscuit type modular flat mouth tongs to solve the problem that operating personnel often use corresponding flat mouth tongs when clamping and cutting workpieces. Although existing flat mouth tongs can achieve the purpose of clamping and cutting, they are mostly integrated in actual use, which is not convenient for disassembly and installation, and the stability is poor. Long-term use may reduce the accuracy of workpiece processing.

[0005] In order to achieve the above object, the utility model provides the following technical scheme: sandwich biscuit type modularization flat mouth tongs, including cylindrical pin, the number of cylindrical pin is two, the surface of cylindrical pin all has the key of active sleeve joint, the surface of cylindrical pin has the right guide rail and left guide rail below the key of active sleeve joint, the outer surface of key and the inner surface of right guide rail and left guide rail are movably connected, the bottom of right guide rail and left guide rail all has the guide rail support plate of active installation, the bottom of guide rail support plate equidistance rotation installs left inner hexagonal screw, and the top of left inner hexagonal screw penetrates guide rail support plate, right guide rail and cylindrical pin and extends to the inside of fixed mouth tongs.

[0006] Preferably, the right guide rail, the left guide rail and the one side of the guide rail support plate are movably installed with a backstop, the one side of the backstop is rotatably installed with a side inner hexagonal screw, the number of the side inner hexagonal screw is four, the size of the side inner hexagonal screw is the same, and the one side of the side inner hexagonal screw penetrates the backstop and extends to the inside of the right guide rail, the left guide rail and the guide rail support plate.

[0007] Preferably, the bottom of the guide rail support plate is movably installed with a bottom plate, both ends of the inside of the bottom plate are movably installed with a bottom pin, the top of the bottom pin penetrates the guide rail support plate and extends to the inside of the right guide rail and the left guide rail, and the outer surface of the bottom pin is movably connected with the inner surface of the right guide rail and the left guide rail.

[0008] Preferably, both ends of the bottom of the bottom plate are rotatably installed with a lower inner hexagonal screw, and the top of the lower inner hexagonal screw penetrates the bottom plate and the guide rail support plate and extends to the inside of the right guide rail and the left guide rail.

[0009] Preferably, the one side of the backstop is rotatably installed with a screw rod, the surface of the screw rod is threadedly sleeved with a nut, the top of the nut is movably installed with a key strip, the top of the key strip is movably installed with a movable mouth tongs, the bottom of the nut is rotatably installed with a right inner hexagonal screw, and the top of the right inner hexagonal screw penetrates the nut and extends to the inside of the movable mouth tongs.

[0010] Preferably, the one side of the screw rod penetrates the backstop and extends to the right side of the backstop, the surface of the screw rod is movably sleeved with a sleeve ring located at the right side of the backstop, the surface of the sleeve ring is movably installed with a connecting pin, and one end of the connecting pin penetrates the sleeve ring and extends to the inside of the screw rod.

[0011] Compared with the prior art, the utility model has the beneficial effects that:

[0012] The sandwich biscuit type modular flat tongs, in the process of daily use, the operator uses the cylindrical pin and the key to position the fixed tongs on the left guide rail and the right guide rail of the base, then the left internal hexagonal screw is used to fasten the fixed tongs on the left guide rail and the right guide rail, then the key strip is used to position the movable tongs on the nut, the right internal hexagonal screw is used to fasten the movable tongs on the nut, then the side internal hexagonal screw is used to fix the back baffle on the end face of the left guide rail and the right guide rail, then the bottom pin is used to position the bottom plate, the guide rail support plate, the left guide rail and the right guide rail, then the lower internal hexagonal screw is used to fasten together, and meanwhile the screw rod is screwed into the nut, the handle is inserted into the interior of the back baffle, the tail of the screw rod is provided with a collar and a connecting pin, and rotation of the screw rod can drive the nut and the movable tongs, so that the tongs are opened and closed, the flat tongs can be installed in this operation mode, and vice versa, the flat tongs can be disassembled.

[0013] The sandwich biscuit type modular flat tongs, in the process of daily use, the fixed tongs pass through the cylindrical pin and the key, the left internal hexagonal screw, the back baffle passes through the side internal hexagonal screw and is formed into a stable frame structure with the left guide rail, the right guide rail and the guide rail support plate, the fixed tongs pass through the two cylindrical pins, so that the inner cavity width between the left guide rail and the right guide rail is determined, and the sliding gap of the nut is guaranteed, meanwhile, the fixed tongs pass through the two cylindrical pins and the two keys, so that the parallelism between the left guide rail and the right guide rail is determined, and the stable frame structure between the fixed tongs, the left guide rail, the right guide rail, the back baffle and the bottom plate is guaranteed, this operation mode can improve the stability of the flat tongs, and then improve the precision of workpiece clamping and cutting. BRIEF DESCRIPTION OF DRAWINGS

[0014] Figure 1 It is the front view of the utility model;

[0015] Figure 2 It is the front view of the utility model;

[0016] Figure 3 It is the plan view of the utility model;

[0017] Figure 4 It is the bottom view of the utility model;

[0018] Figure 5 It is the back view of the utility model;

[0019] Figure 6 It is the right view of the utility model;

[0020] Figure 7 It is the left view of the utility model.

[0021] In the diagram: 1. Cylindrical pin; 2. Left hex socket head cap screw; 3. Fixed jaw pliers; 4. Moving jaw pliers; 5. Right hex socket head cap screw; 6. Key bar; 7. Nut; 8. Side hex socket head cap screw; 9. Rear baffle; 10. Collar; 11. Screw; 12. Right guide rail; 13. Left guide rail; 14. Bottom pin; 15. Lower hex socket head cap screw; 16. Connecting pin; 17. Guide rail support plate; 18. Base plate; 19. Key. Detailed Implementation

[0022] 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.

[0023] Please see Figures 1-7This utility model provides a technical solution: a sandwich-type modular flat-jaw pliers, including two cylindrical pins 1. A key 19 is movably sleeved on the surface of each cylindrical pin 1. A fixed-jaw plier 3 is movably sleeved on the surface of each cylindrical pin 1 above the key 19. A right guide rail 12 and a left guide rail 13 are movably sleeved on the surface of each cylindrical pin 1 below the key 19. The outer surface of the key 19 is movably connected to the inner surfaces of the fixed-jaw plier 3, the right guide rail 12, and the left guide rail 13. The fixed-jaw plier 3 can be positioned on the left guide rail 13 and the right guide rail 12 of the base by means of the cylindrical pins 1 and the key 19. Guide rail supports are movably installed at the bottom of both the right guide rail 12 and the left guide rail 13. The bottom of the support plate 17 and the guide rail support plate 17 are equidistantly mounted with left hexagonal screws 2, and the top of the left hexagonal screws 2 penetrates the guide rail support plate 17, the right guide rail 12 and the cylindrical pin 1 and extends into the interior of the fixed jaw 3. The right guide rail 12, the left guide rail 13 and one side of the guide rail support plate 17 are movably mounted with a rear baffle 9. The fixed jaw 3 forms a stable frame structure with the left guide rail 13, the right guide rail 12 and the guide rail support plate 17 through the cylindrical pin 1, the key 19, the left hexagonal screws 2, and the rear baffle 9 through the side hexagonal screws 8. At the same time, the left guide rail 13 and the right guide rail 12 are positioned on the sleeper rail limiting surface on the rear baffle 9 and the guide rail support plate 17. The space between the base plates 18 provides a sliding track for the nut 7 and the movable jaws. The fixed jaw 3, through two cylindrical pins 1, defines the inner cavity width between the left guide rail 13 and the right guide rail 12, ensuring the sliding clearance of the nut 7. Simultaneously, the fixed jaw 3, through two cylindrical pins 1 and two keys 19, defines the parallelism between the left guide rail 13 and the right guide rail 12, ensuring a stable frame structure formed between the fixed jaw 3, the left guide rail 13 and the right guide rail 12, the rear baffle 9, and the base plate 18. Four side socket head cap screws 8, all of the same size, are rotatably mounted on one side of the rear baffle 9. Furthermore, one side of the side hexagonal screw 8 penetrates the rear baffle 9 and extends into the interior of the right guide rail 12, the left guide rail 13, and the guide rail support plate 17. The side hexagonal screw 8 fixes the rear baffle 9 to the end faces of the left guide rail 13 and the right guide rail 12. The fixed jaw pliers 3, movable jaw pliers 4, left guide rail 13, right guide rail 12, guide rail support plate 17, base plate 18, and rear baffle 9 are all made of profile steel, which eliminates most of the investment in casting and forging molds. The profile steel material is cut and processed by milling machines, drilling machines, grinding machines, etc. Finally, the product is assembled, debugged, tested, and packaged. Due to the high initial precision of the profile steel, the surface machining allowance of most parts is less than 0.The 3mm thickness reduces processing costs and improves material utilization. A wide variety of steel profiles are available, allowing for the production of different grades of products without altering the dimensions of the drawings. When key product parameters need to be changed, such as increasing the opening, only the dimensions of 3-4 parts need to be lengthened. This solves the problems of traditional flat-jaw pliers, where the main structural components are steel, requiring mold making, resulting in high mold costs and long production cycles. Furthermore, when the main structural components of the pliers body are forged or cast, the large machining allowance of the blanks is labor-intensive and time-consuming, and the parts are prone to casting and forging defects during production, increasing material costs. The complex shape of the main structural components of the pliers body also makes them susceptible to defects during heat treatment and quenching. The complex shapes of the components make clamping during machining difficult, increasing the complexity of fixtures and cutting tools, and further increasing costs.

[0024] A base plate 18 is movably mounted on the bottom of the guide rail support plate 17. The guide rail support plate 17 provides a sliding surface for the inverted T-nut 7 inside the clamp body; it also provides a clamping surface for the base plate 18 and the outer side of the clamp body. Bottom pins 14 are movably mounted on both ends of the interior of the base plate 18. The top of the bottom pins 14 penetrates the guide rail support plate 17 and extends into the interior of the right guide rail 12 and the left guide rail 13. The outer surface of the bottom pins 14 is movably connected to the inner surface of the right guide rail 12 and the left guide rail 13. Lower hexagonal socket screws 15 are rotatably mounted on both ends of the bottom of the base plate 18. The top of the lower hexagonal socket screws 15 penetrates the base plate 18 and the guide rail support plate. 17 extends into the interior of the right guide rail 12 and the left guide rail 13. The bottom pin 14 positions the base plate 18, guide rail support plate 17, left guide rail 13 and right guide rail 12, and fastens them together with the lower hexagonal screw 15. The left hexagonal screw 2, right hexagonal screw 5, side hexagonal screw 8 and lower hexagonal screw 15 all adopt an extended inverted T-shaped hollow structure, which effectively suppresses the outward flipping of the moving jaws. A screw 11 is rotatably installed on one side of the rear baffle 9. A nut 7 is threaded onto the surface of the screw 11. When the screw 11 rotates, it will drive the nut 7 to slide. A key 6 is movably installed on the top of the nut 7. When the nut 7 slides, it will drive the key 6. When sliding occurs, the movable jaw 4 is movably mounted on the top of the key bar 6, and the right hexagonal screw 5 is rotatably mounted on the bottom of the nut 7. The top of the right hexagonal screw 5 passes through the nut 7 and extends into the interior of the movable jaw 4. The mounting screws of the fixed jaw 3, the movable jaw 4, and the right guide rail 12 and the left guide rail 13 are all located at the bottom of the jaw body, and the screws are not visible from above, avoiding the defect of chip accumulation in the countersunk holes of the screws, thus meeting environmental protection requirements. When the key bar 6 slides, it will cause the movable jaw 4 to slide as well. Rotating the screw 11 can drive the nut 7 and the movable jaw 4 to open and close the jaws. Changing the length of the left guide rail 13, the right guide rail 12, and the screw 11 can change the... The maximum opening of the modular steel combination machine flat jaw pliers can be varied by changing the steel profile dimensions of the fixed jaw pliers 3 and the movable jaw pliers 4, thereby changing the jaw depth of the modular steel combination machine flat jaw pliers. One side of the screw 11 passes through the rear baffle 9 and extends to the right side of the rear baffle 9. A collar 10 located on the right side of the rear baffle 9 is movably sleeved on the surface of the screw 11. When the collar 10 rotates, it will drive the screw 11 to rotate. A connecting pin 16 is movably installed on the surface of the collar 10, and one end of the connecting pin 16 passes through the collar 10 and extends into the interior of the screw 11. Due to the design of the connecting pin 16, the connection between the collar 10 and the screw 11 can be made tighter.

[0025] Working principle: The operator uses the cylindrical pin 1 and key to position the fixed jaw pliers 3 on the left guide rail 13 and right guide rail 12 of the base. Then, the left hex screw 2 is passed through the guide rail support plate 17 to fasten the fixed jaw pliers 3 to the left guide rail 13 and right guide rail 12. Next, the key bar 6 is used to position the movable jaw pliers 4 on the nut 7, and the right hex screw 5 is used to fasten the movable jaw pliers 4 to the nut 7. Finally, the side hex screw 8 is used to fix the rear baffle 9 to the left guide rail 13 and right guide rail 12. The bottom plate 18, guide rail support plate 17, left guide rail 13 and right guide rail 12 are positioned using the bottom pin 14, and then fastened together with the lower hex socket screw 15. At the same time, the screw 11 is screwed into the nut 7, and the shank is inserted into the back baffle 9. The tail of the screw 11 also has a collar 10 and a connecting pin 16. Rotating the screw 11 can drive the nut 7 and the moving jaw 4 to open and close the jaws, so that the flat jaw pliers can be installed and used.

[0026] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A sandwich-type modular flat-jaw pliers, including a cylindrical pin (1), characterized in that: There are two cylindrical pins (1). A key (19) is movably sleeved on the surface of each cylindrical pin (1). A fixed jaw clamp (3) located above the key (19) is movably sleeved on the surface of each cylindrical pin (1). A right guide rail (12) and a left guide rail (13) located below the key (19) are movably sleeved on the surface of each cylindrical pin (1). The outer surface of the key (19) is movably connected to the inner surfaces of the fixed jaw clamp (3), the right guide rail (12), and the left guide rail (13). A guide rail support plate (17) is movably installed at the bottom of each right guide rail (12) and left guide rail (13). A left internal hexagon screw (2) is rotatably installed at equal distances at the bottom of the guide rail support plate (17). The top of the left internal hexagon screw (2) penetrates the guide rail support plate (17), the right guide rail (12), and the cylindrical pin (1) and extends into the interior of the fixed jaw clamp (3).

2. The sandwich-type modular flat-jaw pliers according to claim 1, characterized in that: A rear baffle (9) is movably installed on one side of the right guide rail (12), the left guide rail (13), and the guide rail support plate (17). A side hexagonal screw (8) is rotatably installed on one side of the rear baffle (9). There are four side hexagonal screws (8). The side hexagonal screws (8) are all the same size, and one side of the side hexagonal screw (8) passes through the rear baffle (9) and extends into the interior of the right guide rail (12), the left guide rail (13), and the guide rail support plate (17).

3. The sandwich-type modular flat-jaw pliers according to claim 1, characterized in that: A base plate (18) is movably installed at the bottom of the guide rail support plate (17). Bottom pins (14) are movably installed at both ends of the interior of the base plate (18). The top of the bottom pins (14) penetrates the guide rail support plate (17) and extends into the interior of the right guide rail (12) and the left guide rail (13). The outer surface of the bottom pins (14) is movably connected to the inner surface of the right guide rail (12) and the left guide rail (13).

4. The sandwich-type modular flat-jaw pliers according to claim 3, characterized in that: The bottom ends of the base plate (18) are rotatably fitted with lower hexagonal screws (15), and the top of the lower hexagonal screws (15) penetrates the base plate (18) and the guide rail support plate (17) and extends into the interior of the right guide rail (12) and the left guide rail (13).

5. The sandwich-type modular flat-jaw pliers according to claim 2, characterized in that: A screw (11) is rotatably mounted on one side of the rear baffle (9). A nut (7) is threaded onto the surface of the screw (11). A key bar (6) is movably mounted on the top of the nut (7). A moving jaw pliers (4) is movably mounted on the top of the key bar (6). A right internal hex screw (5) is rotatably mounted on the bottom of the nut (7). The top of the right internal hex screw (5) penetrates the nut (7) and extends into the interior of the moving jaw pliers (4).

6. The sandwich-type modular flat-jaw pliers according to claim 5, characterized in that: One side of the screw (11) passes through the rear baffle (9) and extends to the right side of the rear baffle (9). A collar (10) located on the right side of the rear baffle (9) is movably sleeved on the surface of the screw (11). A connecting pin (16) is movably installed on the surface of the collar (10), and one end of the connecting pin (16) passes through the collar (10) and extends into the interior of the screw (11).

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