89 results about "Skin stretching" patented technology

The invention relates to the technical field of skin stretching, in particular to a digital twinning system and method of a skin stretching forming device, and the digital twinning system comprises a physical module, a data processing module and a twinning module, the data processing module comprises a real-time data module and a connection optimization module; the system integrates high-precision simulation, real-time data feedback and an intelligent optimization algorithm, realizes digital mapping and precise regulation and control of the whole forming process of the skin component, remarkably improves the forming precision and the surface quality, accelerates process iteration, and meets the high-standard requirements of aeronautical manufacturing.

A retractor for use in surgical operations comprises a pair of blade assemblies. In operation, the blade assemblies are initially in a closed position to assume a low profile, inserted into a relatively small incision, and stretched apart from each other, thereby stretching the skin about the incision to form an aperture longer than the incision. The retractor is adapted to rotate a first blade about a first axis and a second blade about a second axis. The retractor is adapted to move the pair of blade assemblies apart along a third axis. The retractor is adapted to pivot the first blade about a fourth axis and the second blade about a fifth axis. In some embodiments, a method of performing an operation, e.g. a spinal operation, on a patient using the disclosed retractor is provided.

A retractor for use in surgical operations comprises a pair of blade assemblies. In operation, the blade assemblies are initially in a closed position to assume a low profile, inserted into a relatively small incision, and stretched apart from each other, thereby stretching the skin about the incision to form an aperture longer than the incision. The retractor is adapted to rotate a first blade about a first axis and a second blade about a second axis. The retractor is adapted to move the pair of blade assemblies apart along a third axis. The retractor is adapted to pivot the first blade about a fourth axis and the second blade about a fifth axis. In some embodiments, a method of performing an operation, e.g. a spinal operation, on a patient using the disclosed retractor is provided.

The invention relates to the technical field of pressure forming, in particular to a skin drawing and liquid filling composite forming method for a double-layer plate of a double-curvature part, and aims to solve the problems that according to an existing aircraft skin forming process, the part is broken and wrinkled, the surface quality is poor, and the part with the complex shape and the large curvature change is difficult to manufacture. The method comprises the following steps that double-layer plate materials comprise a first plate material and a second plate material which are made of different materials; skin stretching forming is conducted, specifically, the double-layer plate is placed on a skin stretching forming die to be subjected to skin stretching forming; and liquid filling forming is conducted, specifically, the double-layer plate obtained after surface drawing forming is placed in a bulging mold, liquid is injected for pressurization, and therefore the first plate forms a final part. The friction maintaining effect between the second plate and the first plate is utilized, the plasticity of the second plate is larger than that of the first plate, deformation of the first plate is more sufficient, the forming limit of a part formed by the first plate is improved, and the problems that the part is broken, wrinkled, poor in surface quality, difficult to manufacture and the like are solved.

The invention discloses an electric skin taking device and relates to the technical field of medical instruments, the electric skin taking device comprises a rack and a connecting rod, the end of the rack abuts against the end of the connecting rod, the seam of the rack and the connecting rod is in threaded connection with the bottom end of a stand column, and the upper end of the stand column is fixedly connected with the four corners of a frame; guide grooves are formed in the side walls of the racks, the guide grooves of the racks are oppositely arranged, a skin taking assembly is slidably installed between the opposite faces of the racks, and a skin supporting assembly is installed on the upper surface of the connecting rod; the lower surface of the rack is flush with the lower surface of the connecting rod; a control assembly is installed on the upper surface of the frame, and the skin taking assembly and the skin supporting assembly are both electrically connected with the control assembly. According to the electric skin taking device, skin taking operation of a patient can be completed by one person, skin source continuity, integrity and thickness consistency of skin taking can be guaranteed, meanwhile, operation is convenient, and the holding hand feeling is good.

The utility model belongs to the field of infusion ports, particularly relates to an anti-falling device for a venous infusion port, and aims to solve the problems that an existing device cannot effectively fix the infusion port, the pain or discomfort of a patient is increased, and the accident risk caused by falling or pulling of the infusion port is improved. A cavity is formed in the port base, and a silica gel base is fixedly arranged at the position, located at the top of the cavity, of the port base; a placement opening is formed in the middle of the application; according to the intravenous infusion port fixing device, due to the arrangement of the anti-falling assembly, the situation that skin stretches to drive the port base to deviate can be avoided, it is ensured that the intravenous infusion port is firmly fixed to the correct position, displacement or falling is avoided, and a stable use environment can be provided; unnecessary pain or discomfort is reduced, and the accident risk caused by falling off or pulling of the infusion port is reduced.

The invention discloses a local oxygen therapy, flushing and skin stretching device for chronic wound treatment, and relates to the technical field of medical apparatuses and instruments, the local oxygen therapy, flushing and skin stretching device comprises a stretching disc, and a cleaning device is arranged in the middle of the stretching disc; according to the device, breakthrough is achieved through the combination of the circular structure of the stretching disc and the circumferentially-distributed T-shaped sliding racks; the circular geometric structure of the stretching disc has stress symmetry, and stretching force can be evenly dispersed; the position of the T-shaped sliding rack installed in a circumferential sliding mode can be flexibly adjusted in the radial direction of the stretching disc, and six or more stretching points can be set at will according to the boundary of the wound surface in cooperation with the sliding block and the T-shaped hook frame which can slide. For example, for an irregular polygonal wound surface of a diabetic foot, a medical worker can mark six stress balance points on the T-shaped sliding rack and fix the hook, synchronous or independent adjustment of multiple distraction points is achieved through linkage of the rotating gear ring and the multiple sets of gears, and the situation that skin ischemia blister is caused by too large local stress or tissue stretching is affected by insufficient stress is avoided.

The invention discloses a skin stretch forming residual stress rapid calculation method which comprises the following steps: randomly generating a combination of a pre-stretching amount, a coating elongation rate and a friction coefficient, submitting the combination to finite element analysis software to execute batch simulation, and generating a result file named by process parameters; traversing all the result files, extracting node numbers and residual stress values, and storing the node numbers and the residual stress values as a text format data set corresponding to the process parameters; a full-connection neural network model is constructed, an input layer receives the three process parameters of the pre-stretching amount, the coating elongation and the friction coefficient, a hidden layer comprises multiple layers of neurons and adopts a ReLU activation function, and an output layer generates residual stress values of all nodes; training the neural network model by using the data set, and adjusting the network weight through an optimizer; and inputting target process parameters to the trained neural network model, and outputting residual stress calculation results of all nodes of the skin. The technical purposes of rapidness, high efficiency and low cost are achieved.

The utility model discloses a control system of a transverse skin stretching pitching mechanism, which belongs to the technical field of skin stretching hydraulic machines and comprises a proportional servo valve, one end of the proportional servo valve is communicated with an oil tank, and the other end of the proportional servo valve is communicated with a counterbalance element. A check element is arranged between the proportional servo valve and the counterbalance element, one side of the check element is communicated with an electromagnetic reversing valve, the electromagnetic reversing valve is communicated with an oil tank, the counterbalance element is respectively communicated with a safety valve and a leak-free valve, one side of the leak-free valve is communicated with a supporting valve, and the supporting valve is communicated with the oil tank. A pressure sensing element and a shock-proof sensing element are further installed on one side of the counterbalance element, three stretch forming processes are provided for a pitching mechanism of the transverse skin stretch hydraulic press, and the use requirements of users for high efficiency and high quality are met.

The invention discloses a multi-modal intelligent skin patch for multi-scene cardiopulmonary function monitoring and a use method thereof. The multi-modal intelligent skin patch comprises a layered structure body, a flexible circuit board, a multi-modal sensing assembly, a power management assembly and a wireless communication module. The layered structure body comprises an upper Ecoflex material layer, a lower Ecoflex material layer, a lithium battery and a wireless charging coil, wherein the lithium battery and the wireless charging coil are packaged between the two Ecoflex material layers. A layered structure in which the upper Ecoflex material layer and the lower Ecoflex material layer package the lithium battery and the wireless charging coil is adopted, and a polyimide flexible circuit board and a double-bridge snake-shaped structure sensing wire are combined, so that the equipment is endowed with excellent tensile tolerance and skin fitting property; in cooperation with the sweat-proof adhesiveness of the 3M2477P medical silica gel double-faced adhesive tape and the high conductivity of the high-adhesiveness conductive hydrogel layer, the problems of electrode falling and signal distortion caused by sweating and skin stretching in violent activities such as high-intensity intermittent movement are fundamentally solved, and stable acquisition of electrocardio, PPG and respiratory wave signals is ensured.

The invention provides application of maremastat in preparation of a medicine for promoting skin stretching and regeneration. The step of promoting skin stretching and regeneration comprises the substeps of treating or delaying skin stretching and regeneration capacity depletion; the step of promoting skin stretching regeneration comprises the substeps of promoting epidermal cell proliferation, increasing epidermal thickness, delaying damage of an epidermal adhesion structure and preventing epidermal stem cell identity loss; the invention provides the new application of the maremaxostat for the first time, namely the application of the maremaxostat in preparation of the medicine for promoting skin stretching and regeneration.

The application discloses a new application of a JAK inhibitor and a medicine for promoting skin stretch regeneration, and application of the JAK inhibitor in preparation of the medicine for promoting skin stretch regeneration; the medicine for promoting skin stretch regeneration comprises the following components: a JAK inhibitor and a carrier, wherein the carrier comprises sodium hyaluronate and propylene glycol; the application provides a new application of the JAK inhibitor, and the JAK inhibitor can promote skin stretch regeneration, in particular, can promote increase of hair follicle density, increase of epidermis thickness, increase of dermis thickness, reduction of fibrosis degree, reduction of immune infiltration degree and reduction of myofibroblast quantity after skin expansion.

The application discloses a composition with long-acting anti-wrinkle, skin elasticity improvement and skin tightening effects, a preparation method and application thereof, and belongs to the technical field of cosmetics. The composition comprises the following efficacy components: Schizosaccharomyces pombe ferment lysate, hydroxypropyl tetrahydropyrane triol, lactose, whey protein, lactic acid, Lactarius volemus extract and palm leaf tree extract. The eye cream prepared by using the composition has very significant long-acting anti-wrinkle, skin elasticity improvement and skin tightening effects. After 28 days of use, the R2 value of skin elasticity at the corner of the eye is increased by more than 20%, the R0 value of total skin stretching displacement is decreased by more than 40%, the proportion of wrinkle area is decreased by more than 15%, and the wrinkle depth is decreased by more than 27%. The effect after 28 days of use is also significantly better than that after 14 days of use.

The invention discloses a skin-fitting high-performance flexible wearable pressure acquisition device combined with a bionic scale structure, and relates to the technical field of flexible sensors, the pressure acquisition device comprises a flexible main body, the flexible main body comprises a first packaging layer, a second packaging layer, an electrode layer and two flexible PI layers, the two flexible PI layers are respectively located on the upper and lower sides of the electrode layer, and the first packaging layer is connected with the second packaging layer. And the first packaging layer and the second packaging layer are respectively bonded with the corresponding flexible PI layers. Through the arrangement of the scale microstructure, the flexible PI layer, the elastic piece, the first packaging layer and the like, a scale tip which does not generate a point-shaped pressure feeling is in contact with the skin, but a PDMS substrate of the first packaging layer is adopted, so that uniform support is provided, any discomfort or indentation risk is eliminated, and the requirement of long-term wearing is met; the amplification effect of the scale microstructure on micro pressure is also reserved; in addition, the elastic piece becomes a main component for absorbing macroscopic deformation (such as joint bending and skin stretching).

The invention provides a multi-angle skin distractor, which relates to the technical field of medical apparatus and instruments, and comprises at least two types of adhesive stickers adhered to the periphery of a wound of a patient; a fixed base is arranged at the upper end of the adhesive tape, and the adhesive tape is rotationally connected with a rotating piece through the fixed base. Damping is arranged between the rotating piece and the fixed base. The traction rope is connected in series with the at least two rotating parts, and the traction rope and the rotating parts slide relatively; after the adhesive tape adheres, the displacement of the two ends of the traction rope enables the rotating piece to drive the adhesive tape to pull the skin around the wound of the patient, and the problems that in the prior art, effective traction is difficult to achieve for the wound in a round or irregular shape, traction force needed by all positions of the edge of the wound is complex, and the operation is inconvenient are solved. When fixed traction force is applied to the skin around a wound, the relaxation effect on the skin is poor, and medical staff need to adjust the tension every day.

The invention belongs to the technical field of flap retraction, and particularly relates to a flap retraction device for artificial cochlea electrode implantation surgery, which comprises a top plate, electric telescopic rods are fixedly connected to the two sides of the bottom wall, movable boxes are symmetrically and slidably connected to the bottom wall of the top plate, and guide rods are slidably connected to the bottom walls of the movable boxes in a linear array; the guide rod is hollow, the hollow part of the guide rod is communicated with the hollow part of the moving box, and the bottom end of the guide rod is coaxially and fixedly communicated with a connecting seat; the bottom wall of the suction cup is completely attached to the skin of a patient, the problem that local skin is bruised due to untight attachment in traditional rigid traction is avoided, the suction cup automatically adsorbs the skin and retracts the skin, when the skin is stretched to the limit, transverse traction is stopped, longitudinal lifting is conducted, and through linkage of a touch switch and a touch switch, the skin can be automatically pulled out. Excessive skin stretching caused by traditional traction is avoided, transverse and longitudinal two-dimensional traction is achieved, and a deep operation area is fully exposed.

The utility model relates to the field of stretching probes, in particular to a stretching probe for migratory locust epidermis testing, which comprises a support table. The texture analyzer main body is mounted at the rear end part of the supporting table, the fixture base is arranged at the upper end part of the supporting table, a first fixture seat is mounted at the upper end part of the fixture base, and a second fixture seat is arranged at the upper end part of the first fixture seat; the end part of one side of the first clamp seat and the end part of one side of the second clamp seat are rotationally connected with plug bolts; springs are arranged on the outer sides of the plug bolts; the texture analyzer main body and the clamp base are placed through the supporting table, the friction fixing seat is driven to move through the knob bolt, and the friction fixing seat is positioned and supported through the plug bolt and the spring, so that the friction fixing seat is matched with the first clamp seat and the second clamp seat to clamp migratory locusts; the migratory locust is protected through the friction plate, so that the stability is improved, and an epidermis stretching test can be conveniently carried out through the texture analyzer main body.

The invention relates to the technical field of medical instruments, and discloses a nerve interventional operation auxiliary device which comprises a working shell, a bed body fixedly connected to one end of the top of the working shell, a telescopic rod fixedly connected to the bottom of the inner wall of the working shell, and a nerve auxiliary mechanism penetrating through the working shell and extending to the outside of the working shell, the nerve auxiliary mechanism comprises a bent plate fixedly connected to the top of the telescopic rod, one side of the top end of the bent plate is fixedly connected with a round shell, when the bearing plate descends, the bearing plate drives a sliding block to descend, the sliding block drives a vertical strip to descend, the vertical strip drives a flexible belt to descend, and the flexible belt makes contact with the head of a patient in the descending process; therefore, the head skin of the patient is tensioned, the head skin of the patient is prevented from being reset after the rollers are not in contact with the head of the patient any more, the skin stretching stability is improved, and the stability of the head of the patient during an operation can be further improved in the process that the tough belt is in contact with the head of the patient.

The present invention relates to the field of fluid power generation technology, and in particular to a blade and a power generation device having the same, wherein the blade includes a frame and an outer skin; the frame is vertically arranged and can be extended and retracted in the vertical direction; the outer skin is covered on the outside of the frame; when it is necessary to generate electricity with the aid of airflow or water flow, the frame is extended, and the outer skin is extended as the frame undergoes elastic deformation, and forms a blade with certain rigidity and strength with the frame. When it is not necessary to generate electricity with the aid of airflow or water flow, the frame contracts, and the outer skin spontaneously restores its deformation. At this time, the volume of the outer skin is greatly reduced, and the volume of the frame is greatly reduced, thereby reducing the space occupied by the blade when it is idle. At the same time, the surface area of ​​the outer skin is greatly reduced, and with the aid of airflow or water flow, debris falls off the outer skin and moves away along the airflow or water flow, greatly reducing the difficulty of cleaning the debris attached to the blade.

The present invention provides a multi-axis coordinated motion control system and method for a skin stretching machine. The control system includes a controller, a servo valve, and a displacement sensor. The servo valve is installed on the pipeline connecting the stretching branch and the hydraulic station, and the displacement sensor is installed on the stretching branch. The servo valve and the displacement sensor are both electrically connected to the controller. The controller of the present invention obtains an inverse analytical solution for the stretching branch position of the skin stretching machine corresponding to the ideal motion trajectory of the clamp based on an established mathematical model for multi-axis coordinated motion control of the skin stretching machine. After obtaining the ideal displacement trajectory curve of the stretching branch, it sends a command to the servo valve, which then drives each stretching branch hydraulic cylinder to move according to the ideal displacement trajectory curve. During the motion control process, the controller subtracts the real-time data of the displacement sensor from the ideal displacement to obtain a motion control quantity, and sends this motion control quantity to the servo valve to adjust the displacement of the stretching branch, control the motion trajectory of the clamp, and realize multi-axis coordinated motion control of the skin stretching machine.

The invention discloses a body surface positioning point physical alignment device with an anatomical feature self-adaption function. The body surface positioning point physical alignment device comprises a flexible base layer, hardness differential mechanical contacts and a function coupling bin with a conical guide groove. A'click 'sound feedback is generated through a clamping bony marker, and + / -1.5 mm positioning precision is realized; radial incisions compensate for skin stretching errors. Empirical body surface positioning point positioning is converted into standardized mechanical operation, and the technical problems that an existing product is poor in repeatability (gt; 15mm) and lacks somatosensory guidance are solved.

The invention relates to the technical field of skin distractors, and discloses an electric skin distractor which comprises a base plate and further comprises two distracting plates, the two distracting plates are symmetrically arranged, the top ends of the two distracting plates are slidably arranged at the bottom of the base plate, and a plurality of uniformly-distributed distracting teeth are fixed to the side face of each distracting plate; the number of the driving assemblies is two, the two driving assemblies are arranged at the two ends of the base plate correspondingly, and the driving assemblies are used for driving the two stretching plates; the medicine applying assembly is arranged on the base plate, and the medicine applying assembly is used for applying medicine to the skin stretching position. Medicine application can be performed after a wound of a patient is stretched, medicine application is convenient and rapid, in addition, when liquid medicine and gauze on the medicine application plate are replaced, due to the gravity of a balancing weight after the medicine application plate is turned over, a baffle can be unfolded to block dripping medicine when the liquid medicine and the gauze are replaced, and the medicine application effect is improved. The situation that waste liquid medicine and gauze fall to the wound is avoided, and the using effect of the device is improved.

An ungrounded haptic device adapted to be held or worn by a user for simulating kinesthetic forces includes a skin stretch mechanism and at least one vibration generator. The skin stretch mechanism provides haptic shear forces to the skin of the user to simulate continuous and / or persistent forces. A vibration generator mounted to the haptic device provides haptic vibrations to the user to simulate transitory forces. Parameters of the haptic shear forces and parameters of the haptic vibrations are configured to operate complementarily to simulate the kinesthetic forces.

The present application relates to skin stretch forming technical field, and disclose a kind of stretch forming equipment for aluminum alloy skin, including rack, the inside of the middle part of the rack is equipped with jacking mechanism, the upper end of the jacking mechanism is connected with discrete die, the both sides of the rack are respectively provided with multiple groups of independent control flexible clamping mechanism, and the flexible clamping mechanism is symmetrically arranged about the discrete die;The flexible clamping mechanism includes stretch assembly and pressing assembly, the stretch assembly is installed on the pressing assembly, and the pressing assembly is installed on the hydraulic caliper for clamping skin edge.The present application is lifted by the lifting movement of multiple independent control punch assemblies in discrete die, combined with the multilayer composite structure of flexible pad layer, can quickly generate any required curved surface shape without replacing the whole die, and the pneumatic adjusting cavity is independently adjusted by each area inflation pressure, effectively compensates the "step effect" between discrete punch.

The application discloses a skin stretching closer with injection holes, which comprises an adjusting assembly and a fixed hook device, the adjusting assembly comprises a threaded rod, a pressure regulating component, a pressure regulating spring, a sliding sleeve and a fixing nut, the fixed hook device comprises a fixed hook body part one, a fixed hook body part two and at least two rows of hooks arranged on the fixed hook body part one and the fixed hook body part two, a circular hole is horizontally arranged on the upper part of the fixed hook body part, injection holes are arranged on the fixed hook body part one and the fixed hook body part two, the hooks are hollow structures, side holes are arranged on the hooks, and the injection holes are communicated with the hollow cavities of the hooks. When the device is used, a syringe is matched, and analgesic drugs or other therapeutic drugs are injected into the hooks through the injection holes or injection hoses, so that the device is convenient to use and the treatment effect is better.

The present invention provides a hook-type skin stretching and closure device, comprising an adjustment assembly and a fixed hook device, the adjustment assembly comprising a threaded rod, a pressure-adjusting member, a pressure-adjusting spring, a sliding sleeve, and a fixing nut, the fixing hook device comprising a fixed hook body and multiple hooks disposed on the fixed hook body, the fixed hook body having a circular hole transversely disposed on its upper portion, the fixing nut and the pressure-adjusting member being screwed onto the ends of the threaded rod, the pressure-adjusting spring and the sliding sleeve being sequentially sleeved on the threaded rod, the pressure-adjusting member, the pressure-adjusting spring, and the sliding sleeve being sequentially pushed together, an inner sleeve and an outer sleeve being sleeved together on the threaded rod between the sliding sleeve and the fixing nut, the two fixed hook devices being slidably sleeved on the inner sleeve through the circular hole and axially pushing together with the outer sleeve and the fixing nut, the outer sleeve being pushed together with the sliding sleeve; alternatively, the inner sleeve may be omitted and a bare rod section may be disposed in the middle of the threaded rod, thereby ensuring that the fixed hook device will not become stuck when sliding.

The utility model discloses a negative pressure sealing drainage device with a skin stretching function, which belongs to the technical field of medical rehabilitation treatment, and adopts the technical scheme that the negative pressure sealing drainage device comprises two groups of sticking plates and a negative pressure machine, a negative pressure drainage component is arranged on one side of each sticking plate, and the negative pressure machine is arranged on the other side of each sticking plate. When the paste board is fixed near a wound of a patient, erythema or blister may occur during skin fixation, after allergy factors are eliminated, pus in blisters needs to be discharged, only one end of the drainage tube needs to be connected with the drainage holes, the redundant drainage holes are sealed by the plugging cover, and under the action of a negative pressure machine, the pus in the blisters can be discharged. A plurality of suture needle holes are formed in the two sides of the sticking plate, the number of suture needles and threads is increased to reduce the stress of each thread, skin edema caused by postoperative traction is prevented, and traction ropes on the two sides penetrate out of a collection groove to be collected after coming out of the sticking plate, so that the skin is prevented from being damaged. And the movement of the patient is prevented from being influenced by overlong traction rope strips.

The application discloses a skin stress deformation measurement system, method and device, wherein the system comprises: an executor end provided with a transparent pressing part, the pressing part is used for pressing the skin and moving according to a preset direction; a micro camera arranged in the executor end and collecting a first image through the pressing part; a stereo vision camera installed outside the executor end and used for collecting a second image on a skin stretching area and / or a skin accumulation area; and a data processing module, which obtains three-dimensional coordinates of skin particles in an effective contact area according to the first image, obtains three-dimensional coordinates of skin particles in the skin stretching area or the skin accumulation area according to the second image, obtains a deformation condition of the skin according to the obtained three-dimensional coordinates of the skin particles, and performs three-dimensional estimation on the skin stress deformation. The application performs three-dimensional estimation on the deformed skin, provides more accurate data for a skin contact force model, and can be applied to the field of skin stress deformation measurement.

This invention discloses a closed-loop generation and cutting system and method for dynamic patterns of clothing for personalized sports. The system includes: an integrated dynamic capture unit for synchronously collecting visual point cloud data and mechanical data during human movement to construct a 4D data tensor; a dedicated analysis host for performing dynamic skin strain field mapping, topology optimization of dividing lines, and dynamic ease compensation calculation based on fabric physical property parameters and the 4D data tensor to generate an optimized pattern; and a driver and execution terminal directly connected to the host to directly convert the pattern data into cutting instructions to complete the cutting. This invention, through a "sports energy consumption-skin stretching-fabric mechanics" model, generates clothing that significantly reduces structural resistance during movement. Experiments show that in large-amplitude movements such as golf swings, it can reduce motion energy loss by approximately 5%-10%. This solves the industry problem of balancing "personalized patterns" and "automated production" in mass customization.

The invention provides an adjustable skin traction device which comprises a base, a fixing device is arranged on the upper surface of the base, and a first gear is arranged in the fixing device in the left-right direction; the tail end of the first transverse rod is fixed to a first gear, the first gear is fixed to the base through a fixing device, and a second gear is arranged at the top end of the first transverse rod in the front-back direction; a clamping block is arranged at the end of the second cross rod, the clamping block is matched with the top end of the first cross rod, a limiting rod is arranged in the middle of the clamping block and makes contact with the second gear, and the other end of the second cross rod is connected with a suction cup; a plurality of suckers are arranged on the lower surface of the leather tightening plate. Front-back movement is achieved through the first transverse rod, up-down movement is achieved through the second transverse rod, and therefore the leather tightening effect is achieved in the movement process of the leather tightening plate.