Clamping device for hardware stretching

Abstract

The utility model relates to the technical field of hardware machining equipment, and discloses a clamping device for hardware stretching, which comprises a stretching table, U-shaped frames are symmetrically and movably connected to the top of the stretching table, hydraulic cylinders are fixedly connected to two sides of the top of the stretching table, and the telescopic tail ends of the hydraulic cylinders are fixedly connected with the U-shaped frames on the same side. The clamping assembly comprises a connecting base arranged on the inner side face of the U-shaped frame, a gear is rotationally connected to the connecting base, racks are symmetrically and movably connected to the inner side face of the U-shaped frame, the racks and the gear are connected in a meshed mode, and pressing plates are fixedly connected to the bottom ends of the racks. According to the special-shaped hardware clamping device, the problem that the practicability of the device is reduced due to the fact that the special-shaped hardware with the height difference on the surface is difficult to stably and effectively clamp by the device is effectively avoided.

Description

Technical Field

[0001] The utility model relates to the technical field of hardware processing equipment, in particular to a clamping device for stretching hardware. Background Art

[0002] Hardware refers to traditional hardware products, also known as "small hardware," and encompasses five metals: gold, silver, copper, iron, and tin. Through manual processing, these products can be crafted into works of art, such as knives and swords, or into metal objects. Modern hardware encompasses a wider range of categories, including hardware tools, hardware components, household hardware, construction hardware, and security products. Hardware requires stretching during processing, and specialized clamping devices are required to ensure stability.

[0003] Existing clamping devices for stretching hardware generally achieve the clamping operation of the hardware by rotating a screw to drive a pressure plate to approach the hardware for squeezing. For example, a hardware stretching clamping device with patent publication number CN220136838U is available. Although this method is simple to operate and can be applied to hardware of different thicknesses, it can only be used for hardware with flat surfaces, and it is difficult to stably and effectively clamp hardware with height differences on the surface, resulting in certain limitations of the device. For this reason, we provide a clamping device for stretching hardware. Utility Model Content

[0004] In order to solve the problem in the above background technology that the device is difficult to stably and effectively clamp special-shaped hardware with surface height differences, which reduces the practicality of the device, the utility model provides a clamping device for stretching hardware.

[0005] The utility model adopts the following technical solutions to achieve: a clamping device for stretching hardware, comprising:

[0006] A stretching platform, the top of which is symmetrically and movably connected to a U-shaped frame, both sides of the top of the stretching platform are fixedly connected to a hydraulic cylinder, and the telescopic ends of the hydraulic cylinders are fixedly connected to the U-shaped frames on the same side.

[0007] The clamping assembly includes a connecting seat arranged on the inner side of the U-shaped frame, a gear is rotatably connected to the connecting seat, a rack is symmetrically and movably connected to the inner side of the U-shaped frame, and the rack and the gear are meshed together, the bottom end of the rack is fixedly connected to a pressure plate, the top end of the connecting seat is rotatably connected to a screw rod, and the screw rod and the U-shaped frame are threadedly connected.

[0008] As a further improvement of the above solution, a horizontal plate is symmetrically arranged below the pressure plate, a wiping cotton is fixedly connected to the bottom of the horizontal plate, and a connecting rod is hinged between the horizontal plate and the pressure plate through a hinge.

[0009] As a further improvement of the above solution, the inner side surface of the U-shaped frame is symmetrically fixedly connected with a sliding groove, and the sliding groove is slidably connected to the rack on the same side.

[0010] As a further improvement of the above solution, both sides of the connecting seat are fixedly connected to guide rods through connecting plates, and the guide rods are slidably connected to the U-shaped frame.

[0011] As a further improvement of the above solution, an anti-slip pad is fixedly connected to the bottom of the pressing plate.

[0012] As a further improvement of the above solution, the opposing surfaces of the two groups of horizontal plates are fixedly connected with magnet pieces, and the magnetic pole directions of the opposing surfaces of the two groups of magnet pieces are arranged in opposite directions.

[0013] As a further improvement of the above solution, guide grooves are symmetrically provided on the top of the stretching table, and guide blocks are fixedly connected to the bottom of the U-shaped frame and are slidably connected to the guide grooves.

[0014] Compared with the prior art, the beneficial effects of the present invention are:

[0015] 1. When the utility model drives the gear to move vertically downward by rotating the screw rod, due to the meshing action between the gear and the two sets of racks and the sliding cooperation between the racks and the slide groove, the gear will push the two sets of racks to move downward together when moving downward. When the pressure plate at the bottom of one side rack first contacts the surface of the hardware, the side rack will stop moving due to the blocking effect of the hardware. At this time, due to the continued downward movement of the gear, the gear will roll on the side rack. Due to the meshing action, it will drive the other side rack to continue to move downward until the pressure plate at the bottom of the other side rack also contacts the surface of the hardware, thereby achieving the purpose of clamping special-shaped hardware with height differences on the surface, effectively improving the overall applicability of the device and having strong practicality.

[0016] 2. In the process of vertical downward movement of the pressure plate, the utility model drives the two groups of horizontal plates to move downward together. When the two groups of horizontal plates contact the surface of the hardware at the same time, the pressure plate continues to move downward, and with the cooperation of the hinged action between the horizontal plate and the pressure plate and the connecting rod, the two groups of horizontal plates can be squeezed to move to both sides at the same time. At this time, the wiping surface at the bottom of the horizontal plate can wipe the dust particles on the surface of the hardware, thereby ensuring the clamping stability of the hardware and further improving the practicality of the device. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 This is a schematic diagram of the three-dimensional structure of the utility model;

[0018] Figure 2 This is a schematic diagram of the three-dimensional structure of the clamping assembly of the utility model;

[0019] Figure 3It is a three-dimensional schematic diagram of the horizontal plate, wiping cotton and connecting rod connection structure of the utility model.

[0020] Description of main symbols:

[0021] 1. Stretching table; 2. U-shaped frame; 3. Hydraulic cylinder; 4. Guide block; 5. Guide groove; 101. Gear; 102. Rack; 103. Pressing plate; 104. Screw; 105. Slide; 106. Guide rod; 201. Horizontal plate; 202. Wiping cotton; 203. Connecting rod; 204. Magnet. DETAILED DESCRIPTION

[0022] Below, the present invention is further described in conjunction with the accompanying drawings and specific implementation methods. It should be noted that, under the premise of no conflict, the various embodiments or technical features described below can be arbitrarily combined to form new embodiments. Example

[0023] Please combine Figure 1-3 , a clamping device for stretching a hardware part of this embodiment includes:

[0024] The stretching platform 1 has a U-shaped frame 2 symmetrically and movably connected to the top of the stretching platform 1. Hydraulic cylinders 3 are fixedly connected to both sides of the top of the stretching platform 1, and the telescopic ends of the hydraulic cylinders 3 are fixedly connected to the U-shaped frame 2 on the same side. Guide grooves 5 are symmetrically opened on the top of the stretching platform 1, and guide blocks 4 are fixedly connected to the bottom of the U-shaped frame 2 and are slidably connected to the guide grooves 5, which can play a certain guiding role in the horizontal movement of the U-shaped frame 2.

[0025] The clamping assembly includes a connecting seat arranged on the inner side of the U-shaped frame 2, and a gear 101 is rotatably connected to the connecting seat. The inner side of the U-shaped frame 2 is symmetrically and movably connected with a rack 102, and the rack 102 is meshed with the gear 101. The bottom end of the rack 102 is fixedly connected to a pressure plate 103, and the top of the connecting seat is rotatably connected with a screw rod 104, and the screw rod 104 is threadedly connected to the U-shaped frame 2. The inner side of the U-shaped frame 2 is symmetrically and fixedly connected with a slide groove 105, and the slide groove 105 is slidably connected to the rack 102 on the same side, which can play a certain guiding role in the vertical movement of the rack 102. Both sides of the connecting seat are fixedly connected with guide rods 106 through connecting plates, and the guide rods 106 are slidably connected to the U-shaped frame 2, which can play a certain guiding role in the vertical movement of the gear 101.

[0026] A horizontal plate 201 is symmetrically arranged below the pressure plate 103, and a wiping cotton 202 is fixedly connected to the bottom of the horizontal plate 201. A connecting rod 203 is hinged between the horizontal plate 201 and the pressure plate 103 through a hinge. The opposite surfaces of the two groups of horizontal plates 201 are fixedly connected with magnet sheets 204, and the magnetic pole directions of the opposite surfaces of the two groups of magnet sheets 204 are set in opposite directions, which can keep the two groups of horizontal plates 201 horizontal and prevent them from flipping.

[0027] The implementation principle of a clamping device for stretching a hardware part in the embodiment of the present application is as follows: first, the two ends of the hardware part are respectively placed on the inner side surfaces of the two sets of U-shaped frames 2, and then the screw rod 104 is rotated. By rotating the screw rod 104, the gear 101 can be driven to move vertically downward. Due to the meshing action between the gear 101 and the two sets of racks 102 and the sliding cooperation between the racks 102 and the slide groove 105, the gear 101 will push the two sets of racks 102 to move downward together when moving downward, thereby driving the two sets of pressure plates 103 to move downward together. The hardware is pressed down and fixed. When the hardware is a special-shaped part with a height difference on the surface, after the pressure plate 103 at the bottom of the rack 102 on one side contacts the surface of the hardware first, the rack 102 on this side will stop moving due to the obstruction of the hardware. At this time, as the gear 101 continues to move downward, the gear 101 will roll on the rack 102 on this side. Due to the meshing action, the rack 102 on the other side will continue to move downward until the pressure plate 103 at the bottom of the rack 102 on the other side also contacts the surface of the hardware, thereby achieving The purpose of clamping special-shaped hardware with high and low surface differences is achieved, and the application range of the device as a whole is effectively improved. At the same time, when the pressure plate 103 moves vertically downward, it will drive the two sets of horizontal plates 201 to move downward together. When the two sets of horizontal plates 201 come into contact with the surface of the hardware at the same time, due to the continued downward movement of the pressure plate 103, and under the cooperation of the hinged action between the horizontal plate 201 and the pressure plate 103 and the connecting rod 203, the two sets of horizontal plates 201 can be squeezed to move to both sides at the same time. At this time, the bottom of the horizontal plate 201 The wiping cotton 202 can wipe the dust particles on the surface of the hardware, thereby ensuring the clamping stability of the hardware. Then, the two groups of hydraulic cylinders 3 are started to drive the two groups of U-shaped frames 2 to move to both sides at the same time to stretch the hardware. Finally, the hardware is released and removed. When the pressure plate 103 moves vertically upward, due to the action of gravity, the two groups of horizontal plates 201 will continue to approach each other. When the two groups of magnet sheets 204 approach each other, they can be adsorbed together, so that the two groups of horizontal plates 201 can remain horizontal and avoid flipping. Example

[0028] This embodiment is further improved on the basis of embodiment 1 in that a non-slip pad is fixedly connected to the bottom of the pressing plate 103, which can increase the friction between the pressing plate 103 and the surface of the hardware, thereby improving the clamping stability of the hardware.

[0029] The above-mentioned embodiments are only preferred embodiments of the present invention and cannot be used to limit the scope of protection of the present invention. Any non-substantial changes and replacements made by technicians in this field on the basis of the present invention fall within the scope of protection required by the present invention.

Claims

1. A clamping device for stretching hardware, characterized in that: include: A stretching platform (1), wherein the top of the stretching platform (1) is symmetrically and movably connected to a U-shaped frame (2), and both sides of the top of the stretching platform (1) are fixedly connected to hydraulic cylinders (3), and the telescopic ends of the hydraulic cylinders (3) are fixedly connected to the U-shaped frame (2) on the same side; A clamping assembly, the clamping assembly comprising a connecting seat arranged on the inner side of a U-shaped frame (2), a gear (101) being rotatably connected to the connecting seat, a rack (102) being symmetrically and movably connected to the inner side of the U-shaped frame (2), and the rack (102) and the gear (101) being meshedly connected, a pressing plate (103) being fixedly connected to the bottom end of the rack (102), a screw rod (104) being rotatably connected to the top end of the connecting seat, and the screw rod (104) and the U-shaped frame (2) being threadedly connected.

2. A clamping device for stretching hardware according to claim 1, characterized in that: A horizontal plate (201) is symmetrically arranged below the pressing plate (103), a wiping cotton (202) is fixedly connected to the bottom of the horizontal plate (201), and a connecting rod (203) is hinged between the horizontal plate (201) and the pressing plate (103) via a hinge.

3. A clamping device for stretching hardware according to claim 1, characterized in that: The inner side surface of the U-shaped frame (2) is symmetrically fixedly connected with a slide groove (105), and the slide groove (105) is slidably connected to the rack (102) on the same side.

4. A clamping device for stretching hardware according to claim 1, characterized in that: Both sides of the connecting seat are fixedly connected to guide rods (106) via connecting plates, and the guide rods (106) are slidably connected to the U-shaped frame (2).

5. A clamping device for stretching hardware according to claim 1, characterized in that: The bottom of the pressing plate (103) is fixedly connected with an anti-slip pad.

6. A clamping device for stretching hardware according to claim 2, characterized in that: The opposing surfaces of the two groups of horizontal plates (201) are both fixedly connected with magnet pieces (204), and the magnetic pole directions of the opposing surfaces of the two groups of magnet pieces (204) are arranged in opposite directions.

7. A clamping device for stretching hardware according to claim 1, characterized in that: The top of the stretching platform (1) is symmetrically provided with guide grooves (5), and the bottom of the U-shaped frame (2) is fixedly connected to a guide block (4) and is slidably connected to the guide grooves (5).

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