Drum-type electric skin grafting machine

Abstract

The present invention relates to a drum-type electric skinning machine, comprising: a pair of vertical plates which are arranged at intervals; an electric blade including a blade and a first driving mechanism, wherein the first driving mechanism is configured to drive the blade to reciprocate along the length direction of the blade; an electric drum including a drum, a skin clamping frame and a second driving mechanism, wherein the blade is arranged on one side of the drum, the skin clamping frame is arranged on the drum, and the second driving mechanism is configured to drive the drum to rotate towards the blade edge of the blade; a skin separating pipe which is located above the drum and both ends of the skin separating pipe are respectively installed on the pair of vertical plates, and the skin separating pipe is connected with the drum through a synchronous pulley assembly, and the rotation of the drum drives the skin separating pipe to rotate in the same direction, so as to tighten the allogeneic skin located below the skin separating pipe.

Description

Technical Field

[0001] The present invention relates to the technical field of mechanical automation, in particular to the technical field of skinning machines, and more particularly to a drum-type electric skinning machine. Background Art

[0002] In leather processing, a scraping device is usually used to scrape off the residual connective tissue and meat membrane on the leather surface. For example, CN202110294803.2 discloses a meat membrane scraping device for producing chrome-free tanned seat leather without breaking the skin, which includes a side scraping component, an intermediate scraping component, a collection box, a support table and a control console; the side scraping component is connected to the intermediate scraping component; the side scraping component is connected to the support table. The present invention realizes the work of scraping the meat membrane of cowhide, and the synchronous processing of the two units can improve the processing efficiency of cowhide. In addition, when processing cowhide, it can ensure that the cowhide will not be broken or some parts will not be successfully processed due to wrinkling; CN89213937.4 discloses a multi-purpose fleshing machine for various leather sheets. The movable frame is an open structure assembled with the machine frame with a through shaft as the axis. The knife roller is installed on the "goose head" of the "goose-shaped" machine frame, and the small rubber roller is installed on the upper surface or the front side of the upper frame of the movable frame. The best speed of the ten thousand rollers is selected and belt drive is adopted, thus finding a way for the miniaturization and multi-purpose of the fleshing machine.

[0003] These above-mentioned scraping devices and existing devices cannot conveniently meet the skinning requirements for biological purposes. For example, the skin taken is thin, and the surface of the leather is flat and smooth. Summary of the Invention

[0004] The purpose of the present invention is to provide a drum-type electric skinning machine especially for biological purposes in view of the deficiencies of the prior art.

[0005] To achieve the above purpose, the present invention provides a drum-type electric skinning machine, and its main features include:

[0006] A pair of vertical plates, which are arranged at intervals.

[0007] An electric blade, including a blade and a first driving mechanism connected to the blade. The cutting edge of the blade is arranged along the length direction of the blade, and the first driving mechanism is configured to drive the blade to reciprocate along the length direction of the blade.

[0008] The electric drum includes a drum, a skin clamping frame, and a second driving mechanism connected to the drum. The blade is disposed on one side of the drum. The axial direction of the drum is parallel to the length direction of the blade, and both ends of the drum are respectively mounted on the pair of vertical plates. The skin clamping frame is disposed on the drum and is used to fix the side edge of the allograft skin on the drum, and the remaining part of the allograft skin is spread on the surface of the drum. The second driving mechanism is configured to drive the drum to rotate towards the blade edge, so that the allograft skin rotating with the drum rotates to the blade edge of the reciprocating blade to peel off a preset thickness of skin pieces from the allograft skin;

[0009] The skin separating tube is located above the drum, and both ends of the skin separating tube are respectively mounted on the pair of vertical plates. The skin separating tube is connected to the drum through a synchronous pulley assembly. The rotation of the drum drives the skin separating tube to rotate in the same direction, thereby tensioning the allograft skin located below the skin separating tube.

[0010] Preferably, the blade is connected to the first driving mechanism through a skin taking thickness adjustable tool holder. The skin taking thickness adjustable tool holder includes:

[0011] A fixed shaft, the axial direction of the fixed shaft is arranged on the pair of vertical plates parallel to the length direction of the blade. One end of the fixed shaft is connected to the first driving mechanism, and the first driving mechanism is configured to drive the fixed shaft to reciprocate along the length direction of the blade;

[0012] An eccentric shaft, arranged on the pair of vertical plates parallel to the fixed shaft, and the eccentric shaft has an eccentric section;

[0013] At least one skin taking thickness adjustable connection component, and each skin taking thickness adjustable connection component includes:

[0014] A copper slider, sleeved on the eccentric section of the eccentric shaft;

[0015] The clamping seat includes a blade fixing portion at one end of the clamping seat, a clamping portion at the other end of the clamping seat, and a sleeving portion between the blade fixing portion and the clamping portion. The blade fixing portion is used to fix the blade. The sleeving portion is sleeved on the fixed shaft. The clamping portion is movably clamped with the copper slider. The clamping seat is arranged to reciprocate together with the fixed shaft when the first driving mechanism drives the fixed shaft to reciprocate, and at the same time drive the copper slider to reciprocate along the eccentric shaft through the clamping portion. The copper slider is arranged to make the clamping seat rotate around the fixed shaft through the clamping portion when operating the eccentric shaft to rotate and drive the copper slider to lift and lower, so as to adjust the distance between the cutting edge of the blade in the blade fixing portion and the surface of the drum.

[0016] Preferably, the adjustable skin-taking thickness tool rest includes an adjusting disc and a handle arranged on the adjusting disc. The adjusting disc is sleeved on one end of the eccentric shaft. The surface of the adjusting disc is provided with scale marks. When operating the handle to rotate the adjusting disc, the eccentric shaft is driven to rotate at the same time.

[0017] Preferably, the adjustable skin-taking thickness tool rest includes a measuring component. The measuring component includes a displacement dial indicator and a measuring head lifting device. The measuring head lifting device includes a mounting hole and a lifting rod connected upward to the mounting hole. The mounting hole is sleeved on the eccentric section of the eccentric shaft. The measuring head of the displacement dial indicator is arranged above the upper end of the lifting rod and is in contact with the upper end of the lifting rod. The measuring head of the displacement dial indicator is used to measure the displacement generated when operating the eccentric shaft to rotate and drive the lifting rod to lift and lower.

[0018] Preferably, the first driving mechanism is connected to the fixed shaft through a center distance adjustable device. The center distance adjustable device includes a fixed block, an adjusting block, a transmission piece, and a transmission screw. The fixed block is arranged at the end of the output shaft of the first driving mechanism. The adjusting block is respectively connected to the end of the fixed shaft through the transmission piece and the transmission screw. The fixed block includes an adjusting groove and an opening. The adjusting groove extends along the radial direction parallel to the output shaft of the first driving mechanism. The opening extends along the adjusting groove and faces the adjusting block. The adjusting block 172 includes an eccentric piece and a connecting shaft connected to the eccentric piece. The connecting shaft is eccentrically arranged with the eccentric piece. The eccentric piece is matched with the adjusting groove. By adjusting the position of the eccentric piece in the adjusting groove, the eccentricity between the output shaft of the first driving mechanism and the connecting shaft is adjusted, so as to adjust the reciprocating swing amplitude of the fixed shaft.

[0019] Preferably, the snap-in part is in a U shape matching the copper slider.

[0020] Preferably, the blade fixing part is provided with a blade fixing base and a blade cover, and the blade is detachably fixed between the blade fixing base and the blade cover.

[0021] Preferably, the adjustable skin-taking thickness knife rest includes a pair of spaced-apart adjustable skin-taking thickness connection components.

[0022] Preferably, the surface of the skin separating tube is provided with a first threaded section and a second threaded section, and the thread directions in the first threaded section and the second threaded section are opposite, and the surface of the roller is provided with anti-slip threads;

[0023] Open slots are provided on a pair of the vertical plates, and two ends of the skin separating tube are respectively installed in the open slots. The synchronous wheel assembly is arranged at the first end of the skin separating tube. The synchronous wheel assembly includes a roller synchronous wheel connected to the roller, a skin separating tube synchronous wheel connected to the skin separating tube, a synchronous belt for synchronously rotating the skin separating tube synchronous wheel and the roller synchronous wheel, and a synchronous belt elastic tensioning mechanism. The second end of the skin separating tube is connected to the vertical plate through a first elastic member.

[0024] The synchronous belt elastic tensioning mechanism includes a rotating shaft, a second elastic member, and a tensioning rod rotatably arranged on the rotating shaft. One end of the tensioning rod is provided with a tensioning block, and the tensioning block is in contact with the synchronous belt. The other end of the tensioning rod is connected to the vertical plate through the second elastic member. The rotating shaft is arranged in the middle area of the tensioning rod. The synchronous belt elastic tensioning mechanism is configured to automatically adjust the distance between the surface of the skin separating tube and the surface of the roller according to the thickness of the allograft skin.

[0025] Preferably, the skin clamping frame includes a clamping base and a clamping plate. The clamping plate is fixed above the clamping base through a fastening member and is used for clamping the side edge of the allograft skin between the clamping plate and the clamping base. The surface of the roller has a concave part, and at least one upright post is arranged in the concave part. An elastic clamp movable along the upright post is arranged on each upright post. A U-shaped limiting groove corresponding to the upright post is arranged on the side of the clamping base, and the upright post is clamped in the U-shaped limiting groove through the elastic clamp.

[0026] Preferably, the second driving mechanism includes a variable-speed motor;

[0027] The skin-taking machine includes a control unit, and the control unit is respectively connected to the first driving mechanism and the second driving mechanism for controlling the first driving mechanism and the second driving mechanism;

[0028] The described skinning machine includes an adjustable balance chassis, and the pair of vertical plates are arranged on the adjustable balance chassis through vertical plate fixing blocks.

[0029] The drum-type electric skinning machine provided by the present invention can conveniently peel off allogeneic skin. The surface of the skinned leather is flat and smooth after peeling. The required skinning thickness can reach 0.1 - 3 mm (positive and negative tolerance 0.03 mm). The single-time limit skinning length and width are 800 mm and 400 mm respectively. Brief Description of the Drawings

[0030] Figure 1 It is the front view of the drum-type electric skinning machine of the present invention.

[0031] Figure 2 It is the structural schematic diagram of the control cabinet in the drum-type electric skinning machine of the present invention.

[0032] Figure 3 It is the top view of the drum-type electric skinning machine of the present invention.

[0033] Figure 4 It is the left view of the drum-type electric skinning machine of the present invention.

[0034] Figure 5 It is the right view of the drum-type electric skinning machine of the present invention.

[0035] Figure 6 It is the structural schematic diagram of the card seat in the drum-type electric skinning machine of the present invention.

[0036] Figure 7 It is the structural schematic diagram of the card seat after being installed in place in the drum-type electric skinning machine of the present invention.

[0037] Figure 8 It is the structural schematic diagram of the eccentric shaft in the drum-type electric skinning machine of the present invention.

[0038] Figure 9 It is the structural schematic diagram of the adjusting disc in the drum-type electric skinning machine of the present invention.

[0039] Figure 10 It is the structural schematic diagram of the center distance adjustable device in the drum-type electric skinning machine of the present invention.

[0040] Figure 11 It is Figure 10 the structural schematic diagram of the fixing block in

[0041] Figure 12 It is Figure 10 the structural schematic diagram of the adjusting block in

[0042] Figure 13 It is Figure 12Side view.

[0043] Figure 14 It is a schematic structural view of the skin splitting tube in the drum - type electric skin grafting machine of the present invention.

[0044] Figure 15 It is a schematic structural view of the skin clamping frame in the drum - type electric skin grafting machine of the present invention.

[0045] Figure 16 It is a top view of the skin clamping frame in the drum - type electric skin grafting machine of the present invention. Detailed Description of the Invention

[0046] In order to further understand the present invention, the preferred embodiments of the present invention will be described below in conjunction with embodiments. However, it should be understood that these descriptions are only for further explaining the features and advantages of the present invention, rather than limiting the claims of the invention.

[0047] As Figures 1 to 16 shown, it is a specific embodiment of the drum - type electric skin grafting machine provided by the present invention, which is particularly suitable for peeling the epidermis, dermis and surface film of allogeneic skin to obtain extremely thin, flat and smooth skin flakes, for example, 0.1 - 3 mm. The allogeneic skin suitable for the present invention can be animal skins such as pig, cattle, sheep, fish, pig bladder membrane, bovine pericardium, etc.

[0048] Among them, as Figure 1 shown, the electric skin grafting machine includes: a pair of vertical plates 1, 2, the vertical plates are arranged at intervals and in parallel on the adjustable balance base frame 25, and the adjustable balance base frame 25 is used to stably support the whole equipment and increase the overall height. Each vertical plate is vertically fixed on the bottom plate 13 of the adjustable balance base frame through two vertical - plate fixing blocks 12. The vertical plate and the vertical - plate fixing block 12 can be fixed by means such as screws, and the plane where the vertical - plate fixing block is located is perpendicular to the plane where the vertical plate is located.

[0049] As Figures 1 - 4 shown, the electric skin grafting machine includes: an electric blade 4, which includes a blade 37 and a first driving mechanism connected to the blade 37. The cutting edge of the blade 37 is arranged along the length direction of the blade 37, and the first driving mechanism is arranged to drive the blade 37 to reciprocate along the length direction of the blade 37.

[0050] As Figures 1 - 5As shown in the figure, the electric skin grafting machine includes: an electric roller, which includes a roller 9, a skin clamping frame 11 and a second driving mechanism connected to the roller 9. The blade 37 is arranged on one side of the roller 9. The axial direction of the roller 9 is parallel to the length direction of the blade 37, and both ends of the roller 9 are respectively installed on the pair of vertical plates 1 and 2. The skin clamping frame 11 is arranged on the roller 9 and is used to fix the side edge of the allogeneic skin on the roller 9, and the remaining part of the allogeneic skin is spread on the surface of the roller 9. The second driving mechanism is configured to drive the roller 9 to rotate towards the blade edge of the blade 37, so that the allogeneic skin rotating together with the roller 9 rotates to the blade edge of the reciprocating blade 37 to peel off a skin piece with a preset thickness from the allogeneic skin.

[0051] As Figures 1 - 5 shown in the figure, the electric skin grafting machine includes: a skin separating tube 27, which is located above the roller 9, and both ends of the skin separating tube 27 are respectively installed on the pair of vertical plates 1 and 2. The skin separating tube 27 is connected to the roller 9 through a synchronous pulley assembly. The rotation of the roller 9 drives the skin separating tube 27 to rotate in the same direction, so as to tighten the allogeneic skin located below the skin separating tube 27. That is, one side edge of the allogeneic skin is tightly fixed on the roller 9 through the skin clamping frame 11. The rotation of the roller 9 drives the side edge of the allogeneic skin to rotate towards the blade 37 to the blade 37. The blade 37 contacts the allogeneic skin and reciprocates to cut the skin piece. At this time, the roller continues to rotate, and a part of the allogeneic skin below the skin separating tube 27 is clamped between the surface of the skin separating tube 27 and the roller 9. Thus, the part of the allogeneic skin below the skin separating tube 27 is tightened between the side edge of the allogeneic skin or between the part of the allogeneic skin below the skin separating tube 27 and the part of the allogeneic skin cut by the blade 37.

[0052] As Figure 1 shown in the figure, in the present invention, the first driving mechanism may include an ordinary motor 16, and the second driving mechanism may include a variable-speed motor 14. The variable-speed motor 14 can drive the roller 9 to rotate and is convenient for adjusting the rotation speed of the roller 9. An ordinary motor protective cover may be arranged outside the ordinary motor to prevent damage to the motor by disinfectant liquid, dust, etc.; a variable-speed motor protective cover 43 may be arranged outside the variable-speed motor, which can protect the variable-speed motor and the ordinary motor can be fixed on the variable-speed motor protective cover 43 to provide a position for the installation of the ordinary motor.

[0053] As Figure 1 shown in the figure, the variable-speed motor of the second driving mechanism can be installed on the left side of the roller 9, that is, on the left vertical plate, through two fixing bars 15. The roller 9 and the variable-speed motor are driven by a gear assembly. Specifically, as Figure 4As shown in the figure, the large gear 38 is installed at the left end of the central shaft of the drum 9. The small gear 39 meshes with the large gear 38. The small gear 39 is installed on the output shaft of the variable-speed motor. The variable-speed motor drives the drum to rotate through the cooperation of the large gear and the small gear.

[0054] As Figure 1 shown, the left and right ends of the drum 9 can be arranged on a pair of vertical plates 1 and 2 through stainless steel deep groove ball bearings, so that the rotation of the drum 9 is smooth and there is no unnecessary friction with the side surfaces of the vertical plates.

[0055] In the embodiment provided by the present invention, the blade 37 is connected to the first driving mechanism through a skin-taking thickness adjustable tool holder. The skin-taking thickness adjustable tool holder can control the skin-taking thickness and can control the reciprocating motion. As Figure 5 shown, a tool holder protective cover 34 can be arranged above the skin-taking thickness adjustable tool holder to protect the tool holder.

[0056] Specifically, as Figure 3 shown, the skin-taking thickness adjustable tool holder includes: a fixed shaft 19. The axial direction of the fixed shaft 19 is parallel to the length direction of the blade 37, and both ends of the fixed shaft 19 are respectively arranged on the pair of vertical plates 1 and 2. As Figure 3 shown, in order to facilitate the reciprocating motion of the fixed shaft 19, linear bearings 31a and 32b can be arranged at both ends of the fixed shaft 19. In the present invention, the linear bearings 31a and 32b can respectively fix the linear bearings on the two vertical plates through 2 pairs of bearing sleeves 30a and 30b. As Figure 1 shown, the left end of the fixed shaft 19 is connected to the motor in the first driving mechanism. The first driving mechanism is configured to drive the fixed shaft 19 to reciprocate along the length direction of the blade 37. The reciprocating tool holder can peel off the allograft skin.

[0057] As Figure 3 shown, the skin-taking thickness adjustable tool holder includes: an eccentric shaft 5, which is arranged on the pair of vertical plates 1 and 2 parallel to the fixed shaft 19. As Figure 8 shown, the eccentric shaft 5 has an eccentric section, and the skin-taking thickness is adjusted by rotating the eccentric shaft. In the present invention, the eccentric section is the part located between the pair of vertical plates.

[0058] As Figure 3 shown, the skin-taking thickness adjustable tool holder includes: a pair of skin-taking thickness adjustable connection components, and the skin-taking thickness adjustable connection components are arranged at intervals. Among them, each adjustable connection component includes: a copper slider 33 (see Figure 4 ), which is sleeved on the eccentric section of the eccentric shaft 5; a clamping seat 3 (see Figure 3 , 6, 7), including a blade fixing part at one end of the card seat 3, a clamping part at the other end of the card seat, and a sleeving part between the blade fixing part and the clamping part.

[0059] The blade fixing part is used to fix the blade 37. As Figure 7 shown, the blade fixing part is provided with a blade fixing base 371 and a knife cover 372. The blade 37 is detachably fixed between the blade fixing base 371 and the knife cover 372, and can be quickly and detachably fixed by means of screws and screw holes.

[0060] The sleeving part is sleeved on the fixed shaft 19. The clamping part is movably clamped with the copper slider 33. When the first driving mechanism drives the fixed shaft 19 to reciprocate, the blade fixing part of the card seat 3 reciprocates together with the fixed shaft 19 and at the same time drives the copper slider 33 to reciprocate along the eccentric shaft 5 through the clamping part of the card seat 3. That is, the first driving mechanism drives the card seat to reciprocate on the fixed shaft 19 by driving the fixed shaft, and at the same time the copper slider 33 reciprocates on the eccentric shaft 5. The copper slider 33 is arranged such that when the eccentric shaft 5 is rotated to drive the copper slider 33 to lift and lower, the card seat 3 rotates around the fixed shaft 19 through the clamping part to adjust the distance between the cutting edge of the blade 37 in the blade fixing part and the surface of the drum 9. That is, when the copper slider is lifted, the clamping part of the card seat is also lifted. Taking the sleeving part of the card seat 3 as the rotation center, the blade fixing part of the card seat descends, and the distance between the cutting edge and the surface of the drum becomes closer; when the copper slider is lowered, the clamping part of the card seat is also lowered. Taking the sleeving part of the card seat 3 as the rotation center, the blade fixing part of the card seat rises, and the distance between the cutting edge and the surface of the drum becomes farther. Lifting or lowering the copper slider can be achieved by rotating the eccentric shaft.

[0061] For the copper slider of the present invention, copper material is preferably used, aluminum material is preferably used for the card seat, and stainless steel material is preferably used for the remaining components of the skinning machine except the motor, which is convenient for the movement between the copper slider and the clamping part of the card seat and the rotation between the copper slider and the eccentric shaft. As Figure 3 shown, linear bearings 32a, 32b can be preferably embedded inside each copper slider for adjusting the skinning thickness in cooperation with the eccentric shaft. As Figure 6 and 7 shown, the clamping part is in a U shape matching the copper slider 33. The clamping part is directly clamped on the copper slider. When the eccentric shaft is rotated, the copper slider can slide in the U-shaped groove of the clamping part, that is, the copper slider can slide in and out relative to the clamping part.

[0062] In the present invention, in order to facilitate the rotation of the eccentric shaft, as Figure 1 and 9As shown, the adjustable skin-taking thickness tool rest includes an adjusting disc 6 and a handle 61 disposed on the adjusting disc 6. The adjusting disc 6 is sleeved on one end of the eccentric shaft 5. The surface of the adjusting disc 6 is provided with scale markings. While operating the handle 61 to rotate the adjusting disc 6, the eccentric shaft 5 is driven to rotate. A pointer can also be provided and used in conjunction with the scale markings to facilitate the adjustment of the skin-taking thickness and is suitable for use in mass-producing allogeneic skin of the same thickness.

[0063] As Figure 1 shown, eccentric shaft nuts 7 can be provided at both ends of the eccentric shaft 5 to prevent the eccentric shaft from rotating after the skin-taking thickness is adjusted.

[0064] In the present invention, as Figure 1 and 5 shown, the adjustable skin-taking thickness tool rest includes a measuring assembly. The measuring assembly includes a displacement dial indicator 21 and a measuring head lifting device 22. The measuring head lifting device 22 includes a mounting hole and a lifting rod connected upward to the mounting hole. The mounting hole is sleeved on the eccentric section of the eccentric shaft 5. The measuring head of the displacement dial indicator 21 is disposed above the upper end of the lifting rod and is in contact with the upper end of the lifting rod. The measuring head of the displacement dial indicator is used to measure the displacement generated when the lifting rod is lifted and lowered by driving the eccentric shaft 5 to rotate. As Figure 5 shown, the position dial indicator 211 can be fixed to the fixing portion of the vertical plate through indentation locking 211.

[0065] By providing a displacement dial indicator, the rotation of the eccentric shaft can be specifically quantified to visually and accurately control the skin-taking thickness.

[0066] As Figure 1 、 10 to 13 shown, the first driving mechanism is connected to the fixed shaft 19 through a center distance adjustable device 17. The center distance adjustable device 17 includes a fixed block 171, an adjusting block 172, a transmission piece 18, and a transmission screw 36. The fixed block 171 is disposed at the end of the output shaft of the first driving mechanism. The adjusting block 172 is respectively connected to the end of the fixed shaft 19 through the transmission piece 18 and the transmission screw 36. Bearings can be directly inlaid on the transmission piece 18. As Figure 11 shown, the fixed block 171 includes an adjusting groove 174 and an opening 175. The adjusting groove 174 extends along the radial direction parallel to the output shaft of the first driving mechanism. The opening 175 extends along the adjusting groove 174 and faces the adjusting block 172. As Figure 12As shown, the adjusting block 172 includes an eccentric piece 176 and a connecting shaft 177 connected to the eccentric piece 176. Preferably, the connecting shaft 177 is eccentrically arranged with respect to the eccentric piece 176. The eccentric piece 176 is matched with the adjusting groove 174. By adjusting the position of the eccentric piece 176 in the adjusting groove 174, the eccentricity between the output shaft of the first driving mechanism and the connecting shaft 177 is adjusted, thereby adjusting the reciprocating swing amplitude of the fixed shaft 19, and thus adjusting the swing amplitude of the tool rest.

[0067] As Figure 14 shown, the surface of the skin-splitting tube 27 is provided with a first threaded section and a second threaded section, and the thread directions in the first threaded section and the second threaded section are opposite. Bearings can be directly inserted at the ends of the skin-splitting tube 27. The surface of the roller 9 is provided with anti-slip threads. Through the cooperation between the skin-splitting tube and the roller, and the cooperation between the positive and negative threads of the skin-splitting tube and the anti-slip threads of the roller, when the roller drives the allograft skin and the skin-splitting tube to rotate synchronously, the allograft skin can be tightened, and the positive and negative threads and the anti-slip threads can prevent wrinkling when peeling the allograft skin.

[0068] As Figure 4 shown, opening grooves 271 are provided on a pair of the vertical plates 1 and 2, and both ends of the skin-splitting tube 27 are respectively installed in the opening grooves 271. As Figure 5 shown, the synchronous pulley assembly is arranged at the first end of the skin-splitting tube. The synchronous pulley assembly includes a roller synchronous pulley 402 connected to the roller, a skin-splitting tube synchronous pulley 403 connected to the skin-splitting tube 27, a synchronous belt 35 for synchronously rotating the skin-splitting tube synchronous pulley 403 and the roller synchronous pulley 402, and a synchronous belt elastic tensioning mechanism. The second end of the skin-splitting tube is connected to the vertical plate through a first elastic member. The first elastic member can be a compression spring. Among them, the skin-splitting tube synchronous pulley 403 can be directly inserted at the end of the skin-splitting tube 27, and a synchronous belt protective cover can be provided on the synchronous belt 35.

[0069] The roller synchronous pulley 402 is a large synchronous pulley compared with the skin-splitting tube synchronous pulley 403, and the skin-splitting tube synchronous pulley 403 is a small synchronous pulley. The large synchronous pulley can be installed at the right end of the central shaft of the roller (the motor is installed at the left end). When the motor drives the roller to rotate, the large synchronous pulley cooperates with the synchronous belt to drive the small synchronous pulley and the skin-splitting tube to rotate synchronously.

[0070] As Figure 5As shown, the synchronous belt elastic tensioning mechanism includes a rotating shaft 401, a second elastic member, and a tensioning rod 40 rotatably arranged on the rotating shaft 401. The second elastic member can be a spring. One end of the tensioning rod 40 is provided with a tensioning block, which is in contact with the synchronous belt. The other end of the tensioning rod is connected to the vertical plate through the second elastic member. The rotating shaft 401 is arranged in the middle area of the tensioning rod 40. The synchronous belt elastic tensioning mechanism is configured to automatically adjust the distance between the skin dividing tube and the surface of the roller according to the thickness of the allograft skin. In particular, in the case of too thick allograft skin, through the synchronous belt tensioning mechanism and the skin dividing tube arranged in the opening groove, the skin dividing tube can automatically adjust the distance from the surface of the roller, so that the allograft skin always keeps the skin dividing tube under action.

[0071] As Figure 15 and 16 shown, the skin clamping frame 11 includes a clamping base 112 and a clamping plate 111. The clamping plate 111 is fixed above the clamping base 112 through a fastener 113, and is used to clamp the side edge of the allograft skin between the clamping plate 111 and the clamping base 112. As Figure 4 can clearly show that the surface of the roller 9 has recesses. The recesses are arranged on a pair of columns, and an elastic clip 8 movable along the column is arranged on each column. A U-shaped limit groove 114 corresponding to the column is arranged on the side of the clamping base 112. When fixing the allograft skin, first place the side edge of the allograft skin between the clamping plate 111 and the clamping base 112, and then rotate the fasteners 113 at both ends to tighten and clamp the clamping plate 111 and the clamping base 112, so that the side edge of the allograft skin is fixed between the clamped clamping plate 111 and the clamping base 112; then, pull up the elastic clip 8 again, align the U-shaped limit groove 114 on the clamping base 112 with the bottom of the column and push it in, and release the elastic clip 8. The elastic clip 8 automatically resets, and the elastic clip 8 clamps the column in the U-shaped limit groove 114. Convex platforms can be arranged at the two outer ends of the U-shaped limit groove 114 to prevent the column from slipping out of the U-shaped limit groove 114. In addition, the allograft skin is fixed in the recess of the roller, and the part of the allograft skin on the surface of the roller is kept flat. Moreover, through the skin clamping frame and the elastic clip of the present invention, one side edge of the allograft skin can be quickly fixed on the roller.

[0072] In the present invention, the skin cutting machine includes a control unit arranged in the control cabinet 41. The control unit is respectively connected to the first driving mechanism and the second driving mechanism, and is used to control the first driving mechanism and the second driving mechanism. As Figure 2As shown, a low-speed adjustment knob 411, a high-speed adjustment knob 413, a rotational speed display screen 412, an emergency stop button 414, and a touch screen 415 are respectively arranged on the control cabinet 41. On the touch screen 415, an emergency stop key, a tool rest start / stop key, a motor forward rotation start / stop key, a motor reverse rotation start / stop key, and a high / low speed switching key, etc. can be set to adjust the two motors and the whole skinning machine as required.

[0073] As Figure 3 shown, in the skinning machine of the present invention, a skin pressing tube 26 is further arranged, which is arranged on a pair of columns 1 and 2 in parallel with the skin separating tube 27. The two ends of the skin pressing tube 26 are respectively connected to the two ends of the skin separating tube 27 through two compression springs 29a and 29b, facilitating pressing the allograft skin on the surface of the drum. The skin pressing tube 26 may not be provided either.

[0074] The drum-type electric skinning machine provided by the present invention can conveniently peel the allograft skin. The surface of the skinned leather is flat and smooth after peeling. The required skinning thickness can reach 0.1 - 3 mm (plus or minus tolerance of 0.03 mm). The single-time limit skinning length and width are 800 mm and 400 mm respectively.

[0075] In this specification, the present invention has been described with reference to its specific embodiments. However, it is obvious that various modifications and transformations can still be made without departing from the spirit and scope of the present invention. Therefore, the specification should be regarded as illustrative rather than restrictive.

Claims

1. A drum - type electric skin - taking machine, characterized in that, it comprises: a pair of vertical plates which are arranged at intervals; an electric blade, including a blade and a first driving mechanism connected to the blade, the cutting edge of the blade is arranged along the length direction of the blade, and the first driving mechanism is configured to drive the blade to reciprocate along the length direction of the blade; an electric drum, including a drum, a skin - clamping frame and a second driving mechanism connected to the drum, the blade is arranged on one side of the drum, the axial direction of the drum is parallel to the length direction of the blade and both ends of the drum are respectively installed on the pair of vertical plates, the skin - clamping frame is arranged on the drum for fixing the side edge of the allograft skin on the drum and the remaining part of the allograft skin is spread on the surface of the drum, and the second driving mechanism is configured to drive the drum to rotate towards the cutting edge of the blade, so that the allograft skin rotating with the drum rotates to the cutting edge of the reciprocating blade to peel off a skin piece with a preset thickness from the allograft skin; a skin - separating tube, located above the drum and both ends of the skin - separating tube are respectively installed on the pair of vertical plates, the skin - separating tube is connected to the drum through a synchronous pulley assembly, and the rotation of the drum drives the skin - separating tube to rotate in the same direction, thereby tightening the allograft skin located below the skin - separating tube. The blade is connected to the first driving mechanism through a skin - taking thickness - adjustable tool rest, and the skin - taking thickness - adjustable tool rest includes: a fixed shaft which is arranged on the pair of vertical plates parallel to the length direction of the blade, one end of the fixed shaft is connected to the first driving mechanism, and the first driving mechanism is configured to drive the fixed shaft to reciprocate along the length direction of the blade; an eccentric shaft which is arranged on the pair of vertical plates parallel to the fixed shaft, and the eccentric shaft has an eccentric section; at least one skin - taking thickness - adjustable connection assembly, and each skin - taking thickness - adjustable connection assembly includes: a copper slider sleeved on the eccentric section of the eccentric shaft; The cartridge includes a blade fixing portion at one end of the cartridge, a clamping portion at the other end of the cartridge, and a sleeving portion between the blade fixing portion and the clamping portion. The blade fixing portion is used to fix the blade. The sleeving portion is sleeved on the fixed shaft. The clamping portion is movably clamped with the copper slider. The cartridge is arranged to reciprocate together with the fixed shaft when the first driving mechanism drives the fixed shaft to reciprocate, and at the same time drive the copper slider to reciprocate along the eccentric shaft through the clamping portion. The copper slider is arranged to make the cartridge rotate around the fixed shaft to adjust the distance between the cutting edge of the blade in the blade fixing portion and the surface of the drum when operating the eccentric shaft to rotate to drive the copper slider to lift and lower. The blade fixing portion is provided with a blade fixing base and a knife cover. The blade is detachably fixed between the blade fixing base and the knife cover. The adjustable skin-taking thickness cutter holder includes a pair of spaced adjustable skin-taking thickness connection components.

2. The drum-type electric skin-taking machine according to claim 1, characterized in that the adjustable skin-taking thickness cutter holder includes an adjusting disc and a handle arranged on the adjusting disc. The adjusting disc is sleeved on one end of the eccentric shaft. The surface of the adjusting disc is provided with scale marks. When operating the handle to rotate the adjusting disc, the eccentric shaft is driven to rotate at the same time.

3. The drum-type electric skin-taking machine according to claim 2, characterized in that the adjustable skin-taking thickness cutter holder includes a measuring component. The measuring component includes a displacement dial indicator and a measuring head lifting device. The measuring head lifting device includes a mounting hole and a lifting rod connected upward to the mounting hole. The mounting hole is sleeved on the eccentric section of the eccentric shaft. The measuring head of the displacement dial indicator is arranged above the upper end of the lifting rod and is in contact with the upper end of the lifting rod. The measuring head of the displacement dial indicator is used to measure the displacement generated when operating the eccentric shaft to rotate to drive the lifting rod to lift and lower.

4. The drum-type electric skin-taking machine according to any one of claims 1 to 3, characterized in that The described first driving mechanism is connected to the fixed shaft through a center distance adjustable device. The center distance adjustable device includes a fixed block, an adjusting block, a transmission piece, and a transmission screw. The fixed block is arranged at the end of the output shaft of the first driving mechanism. The adjusting block is respectively connected to the end of the fixed shaft through the transmission piece and the transmission screw. The fixed block includes an adjusting groove and an opening. The adjusting groove extends along the radial direction parallel to the output shaft of the first driving mechanism. The opening extends along the adjusting groove and faces the adjusting block. The adjusting block includes an eccentric piece and a connecting shaft connected to the eccentric piece. The connecting shaft is eccentrically arranged with respect to the eccentric piece. The eccentric piece is matched with the adjusting groove. By adjusting the position of the eccentric piece in the adjusting groove, the eccentricity between the output shaft of the first driving mechanism and the connecting shaft is adjusted, so as to adjust the reciprocating swing amplitude of the fixed shaft.

5. The drum-type electric skin grafting machine according to any one of claims 1 to 3, characterized in that, The clamping portion is in a U shape matching the copper slider.

6. The drum-type electric skin grafting machine according to any one of claims 1 to 3, characterized in that, The surface of the skin separating tube is provided with a first thread section and a second thread section, and the thread directions in the first thread section and the second thread section are opposite. The surface of the drum is provided with anti-slip threads; Open slots are arranged on a pair of the vertical plates. The two ends of the skin separating tube are respectively installed in the open slots. The synchronous pulley assembly is arranged at the first end of the skin separating tube. The synchronous pulley assembly includes a drum synchronous pulley connected to the drum, a skin separating tube synchronous pulley connected to the skin separating tube, a synchronous belt for synchronously rotating the skin separating tube synchronous pulley and the drum synchronous pulley, and a synchronous belt elastic tensioning mechanism. The second end of the skin separating tube is connected to the vertical plate through a first elastic member. The synchronous belt elastic tensioning mechanism includes a rotating shaft, a second elastic member, and a tensioning rod rotatably arranged on the rotating shaft. One end of the tensioning rod is provided with a tensioning block, and the tensioning block is in contact with the synchronous belt. The other end of the tensioning rod is connected to the vertical plate through the second elastic member. The rotating shaft is arranged in the middle area of the tensioning rod. The synchronous belt elastic tensioning mechanism is configured to automatically adjust the distance between the surface of the skin separating tube and the surface of the drum according to the thickness of the allograft skin.

7. The drum-type electric skin grafting machine according to claim 6, characterized in that, The described skin clip holder includes a clamping base and a clamping plate. The clamping plate is fixed above the clamping base through fasteners and is used to clamp the side edge of the allograft skin between the clamping plate and the clamping base. The surface of the roller has recesses, and at least one upright post is arranged in the recesses. An elastic clip movable along the upright post is arranged on each upright post. A U-shaped limiting groove corresponding to the upright post is arranged on the side of the clamping base, and the upright post is clamped in the U-shaped limiting groove through the elastic clip.

8. The drum-type electric skin grafting machine according to claim 6, characterized in that the second driving mechanism includes a variable-speed motor; the skin grafting machine includes a control unit, and the control unit is respectively connected to the first driving mechanism and the second driving mechanism for controlling the first driving mechanism and the second driving mechanism; the skin grafting machine includes an adjustable balance chassis, and the pair of vertical plates are arranged on the adjustable balance chassis through vertical plate fixing blocks.

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