Compression wheel type dual axle wrapping machine

Abstract

The application relates to the field of encapsulation, in particular to a pressure wheel type double-shaft encapsulation machine. The encapsulation machine comprises a rack, a winding unit and a cutting unit. The winding unit is arranged on the rack and comprises a workpiece clamp and a winding driving element. The winding driving element is opposite to the workpiece clamp and is used for driving the workpiece clamp to rotate. The cutting unit comprises a moving frame, a cutter and a linear driving element. The moving frame is in sliding fit with the winding unit. The linear driving element is connected with the cutter and is used for driving the cutter to move. The included angle between the moving direction of the cutter and the sliding direction of the moving frame is greater than 0 DEG and smaller than 180 DEG. The pressure wheel type double-shaft encapsulation machine can be suitable for the workpiece with more than four side surfaces or the workpiece with grooves, protrusions or annular splicing joints on the side surfaces, and the qualified rate of encapsulation is improved.

Description

TECHNICAL FIELD

[0001] The application relates to the field of encapsulation, in particular to a double-shaft encapsulation machine with a pressure wheel. BACKGROUND

[0002] After the workpieces such as crystal heat sinks on PCBs are manufactured, the workpieces need to be wound with adhesive tapes according to relevant standards, and currently, encapsulation machines are usually used for winding. The current encapsulation machine mainly comprises a rotating body and a cutter, two clamps are arranged on the rotating body and can clamp two workpieces at the same time, a gap is arranged between the two clamps, and the cutter is opposite to the gap. During encapsulation, the free end of the adhesive tape is wound on the workpiece in the upper clamp. Before winding the next workpiece, the rotating body is first rotated by 180 degrees, so that the previous workpiece is rotated to the lower side and the next workpiece is located on the upper side. At this time, the part of the adhesive tape close to the previous workpiece is pasted on the workpiece on the upper side, and the adhesive tape between the two workpieces is opposite to the cutter. The cutter is horizontally slid to cut off the part of the adhesive tape between the upper and lower workpieces, and the free end on the lower side is pasted on the workpiece on the lower side to complete the encapsulation of the workpiece on the lower side. At the same time, the free end on the upper side is pasted on the workpiece on the upper side. Then, the clamp on the upper side is controlled to rotate to wind the adhesive tape on the workpiece on the upper side to automatically complete the encapsulation.

[0003] However, the encapsulation machine can only be used for workpieces with relatively flat sides and less sides, such as workpieces with rectangular cross sections. When the cross section of the workpiece is a polygon with more than four sides, or when there are grooves, protrusions or annular joints on the side wall of the workpiece to be encapsulated, the free end of the adhesive tape is easy to deviate from the thickness direction of the workpiece under the pushing of the cutter. Therefore, currently, the workpieces can only be encapsulated one by one. That is, after the encapsulation of the previous workpiece is completed, the adhesive tape needs to be cut off, and then the next workpiece is put in and the free end of the adhesive tape is pasted on the next workpiece to encapsulate the next workpiece.

[0004] In order to reserve enough movement space for the cutter, there is usually a certain distance between the structure for limiting the adhesive tape and the workpiece. After the cutter cuts off the adhesive tape, there is a long free end of the adhesive tape. However, the adhesive tape is usually flexible. After the cutter cuts off the adhesive tape, the long free end of the adhesive tape is easy to bend or shift under the flow of air. When the next workpiece is encapsulated, the winding of the adhesive tape is easy to gradually dislocate, loosen and not completely cover the copper foil. The dislocation of the adhesive tape will cause the copper foil lead to be raised, the loosening of the adhesive tape will cause the welding point to be uneven, and the incomplete covering of the copper foil by the adhesive tape will cause the iron core to be dislocated. The workpieces with the above problems are all defective products. Therefore, an encapsulation machine capable of adapting to workpieces with more than four sides or workpieces with grooves, protrusions or annular joints on the side wall to be encapsulated is needed to improve the qualified rate of encapsulation. SUMMARY

[0005] The present application intends to provide a compression wheel type double-shaft rubber coating machine to adapt to workpieces with more than four sides or with grooves, protrusions or annular splices on the sides and improve the rubber coating qualification rate.

[0006] To achieve the above-mentioned purpose, the present application adopts the following technical scheme: a compression wheel type double-shaft rubber coating machine, comprising a rack, a winding unit and a cutting unit, the winding unit is located on the rack, the winding unit comprises a workpiece clamp and a winding driving member, the winding driving member is opposite to the workpiece clamp and is used to drive the workpiece clamp to rotate, the cutting unit comprises a moving frame, a cutter and a linear driving member, the moving frame is in sliding fit with the winding unit, the linear driving member is connected with the cutter and is used to drive the cutter to move, and the included angle between the moving direction of the cutter and the sliding direction of the moving frame is greater than 0° and less than 180°.

[0007] The present application has the following beneficial effects:

[0008] The rubber coating machine in the present application is provided with a moving frame, and the moving frame can move relative to the winding unit, when starting rubber coating, the moving frame drives the adhesive tape to approach the workpiece, so as to reduce the distance between the free end of the adhesive tape and the workpiece, therefore, after completing the rubber coating of the previous workpiece, the cutter can cut off the adhesive tape at a position close to the adhesive tape limiting structure, that is, the free end formed after the adhesive tape is cut off is short, and when replacing the workpiece, the short free end will not be displaced, and because the moving frame can move, the short free end can ensure that the free end of the adhesive tape can be pasted on the workpiece when the next adhesive tape is coated, and because the adhesive tape is tensioned during the rubber coating process, the adhesive tape to be wound will not be displaced or loose.

[0009] Secondly, because the moving frame can move, even if the cutting position of the cutter is close to the workpiece when cutting off the adhesive tape after rubber coating, the free end of the unused adhesive tape can be ensured to be short, and the free end of the adhesive tape on the workpiece is also short at this time, and the free end of the adhesive tape on the workpiece will not be displaced, avoiding the situation that the adhesive tape does not completely cover the copper foil, and effectively improving the rubber coating qualification rate of the workpiece.

[0010] Finally, when the cutter cuts off the adhesive tape, the adhesive tape will be further pressed towards the side close to the workpiece, further reducing the length of the free end of the adhesive tape on the workpiece, pre-positioning the free end of the adhesive tape, and avoiding the end of the adhesive tape to be skewed.

[0011] Further, the moving frame and the rack have a first moving direction and a second moving direction, and the included angle between the first moving direction and the second moving direction is greater than 0° and less than 180°.

[0012] The beneficial effects of the scheme are: taking the first moving direction horizontal and the second moving direction vertical as examples, when starting to coat, the moving frame moves vertically, which can make the free end of the to-be-used adhesive tape close to the workpiece, facilitating the pressing of the free end of the adhesive tape on the workpiece and positioning the free end of the adhesive tape. During the coating process, the horizontal movement of the moving frame can further reduce the distance between the moving frame and the workpiece, thereby further reducing the length of the adhesive tape between the moving frame and the workpiece. When the cutter is used to cut off the adhesive tape, the free end of the adhesive tape on the moving frame and the free end of the adhesive tape on the workpiece are further shortened, further avoiding displacement of the adhesive tape.

[0013] Secondly, after the coating of a workpiece is completed, the horizontal movement of the moving frame away from the workpiece can increase the distance between the moving frame and the workpiece, so that the workpiece is not easily blocked by the moving frame when it is taken out and the next workpiece is put in, and the side of the adhesive tape on the moving frame with adhesive is not easily contacted, so that the adhesive effect of the adhesive tape does not deteriorate, and the adhesive tape can be more firmly adhered to the workpiece.

[0014] Further, the cutting unit comprises a first driving member, the first driving member is installed on the rack, and the first driving member is used to drive the moving frame to slide along the first moving direction.

[0015] The beneficial effects of the scheme are that the first driving member can drive the moving frame to move, and manual movement of the moving frame is no longer needed, and the operation is simpler.

[0016] Further, the cutting unit comprises a second driving member, the first driving member is connected with a base frame, the second driving member is installed on the base frame, and the second driving member is connected with the moving frame and drives the moving frame to slide along the second moving direction.

[0017] The beneficial effects of the scheme are that the second driving member can also drive the moving frame to move along the second moving direction, further simplifying manual operation.

[0018] Further, the moving frame is provided with a pressing member, and a projection of the pressing member is located on a side of the workpiece clamp away from the rack.

[0019] The beneficial effects of the scheme are that the pressing member in the scheme is opposite to the workpiece put into the workpiece clamp. When coating, the adhesive tape adhered to the workpiece is rotated to between the workpiece and the pressing member. At this time, the pressing member can press the adhesive tape on the workpiece, further increasing the pressure between the adhesive tape and the workpiece, making the adhesive tape adhere more firmly, further avoiding loosening of the adhesive tape, thereby avoiding the problem of uneven welding spots of the workpiece, and improving the qualified rate of coating.

[0020] Further, the moving frame is slidably connected with a mounting seat, a linear buffer is arranged between the mounting seat and the moving frame, and the pressing member is installed on the mounting seat.

[0021] The beneficial effect of the scheme is that the linear buffer is used to provide space for the pressing piece and the mounting seat away from the workpiece when the pressing piece is subjected to the pressure of the workpiece, and reset the pressing piece and press on the workpiece after the pressure decreases. Taking the workpiece with a rectangular cross section as an example, the distance between each side surface of the workpiece and the center of the workpiece is relatively large, when the part with a larger distance rotates to the position in contact with the pressing piece, the pressure between the workpiece and the pressing piece increases, at this time, the pressing piece can move away from the workpiece, avoiding the damage of the workpiece or the pressing piece caused by the excessive pressure between the pressing piece and the workpiece; when the part with a smaller distance rotates to the position towards the pressing piece, the pressing piece still presses on the workpiece under the action of the linear buffer, and the adhesive tape is pressed.

[0022] Further, the pressing piece and the mounting seat are rotationally matched.

[0023] The beneficial effect of the scheme is that when the workpiece rotates, the pressing piece rotates under the action of friction, thereby reducing the friction between the pressing piece and the adhesive tape, and avoiding the breakage of the adhesive tape and the wear of the pressing piece.

[0024] Further, the moving frame is provided with a tape pulling unit, and the tape pulling unit comprises a tape clamp, a cutter and the tape clamp are respectively located on both sides of the workpiece clamp.

[0025] The beneficial effect of the scheme is that the free end of the adhesive tape to be used can be clamped by the tape clamp, thereby further avoiding the deviation of the free end of the adhesive tape.

[0026] Further, the tape pulling unit further comprises a fixing frame, the fixing frame is in sliding cooperation with the moving frame, and the fixing frame slides towards the side close to the cutter.

[0027] The beneficial effect of the scheme is that when the free end of the adhesive tape is clamped by the tape clamp, the fixing frame in the scheme moves towards the side close to the cutter, that is, the fixing frame is close to the free end of the adhesive tape, so that the free end of the adhesive tape can be clamped quickly without manual traction, the operation is simpler, and the sweat on the hands of the worker is also avoided to adhere to the adhesive tape, thereby improving the adhesion of the free end of the adhesive tape.

[0028] Further, the rack is rotationally connected with a mounting rack, the workpiece clamp and the winding driving member are arranged on the mounting rack; the winding unit further comprises a rotating driving member, the rotating driving member is connected with the mounting rack and is used for driving the mounting rack to rotate, the workpiece clamp comprises a first clamp and a second clamp, the first clamp and the second clamp are distributed along the circumference of the mounting rack; the rack is provided with a turnover unit, the turnover unit comprises a vertical pushing member, a horizontal pushing member, a base, a connecting seat, a turnover rack, a turnover driving member and a clamping member, the turnover unit is opposite to the mounting rack, the horizontal pushing member is arranged on the rack and is connected with the base, the vertical pushing member is arranged on the base and is connected with the connecting seat, the horizontal pushing member is used for pushing the base along the horizontal direction, and the vertical pushing member is used for pushing the connecting seat along the vertical direction; the turnover rack is rotationally connected with the connecting seat, the turnover driving member is arranged on the connecting seat and is connected with the turnover rack, and the turnover driving member is used for driving the turnover rack to rotate; the clamping member is arranged on the turnover rack.

[0029] The first clamp and the second clamp in the scheme can clamp workpieces in different states respectively, and can coat glue on different parts of the workpieces. The clamping member can automatically take out the workpiece from the first clamp or the second clamp, turn over the workpiece by 90 degrees, and then put the workpiece into the other clamp in another posture, so that the side surface of the workpiece in another direction can be coated with glue, and manual movement is not needed, and the operation is simpler. BRIEF DESCRIPTION OF DRAWINGS

[0030] Figure 1 It is a perspective view of the embodiment 1 of the present application;

[0031] Figure 2 It is a front view of the cutter, the pressing member and the adhesive tape clamp in Figure 1

[0032] Figure 3 It is a top view of the workpiece clamp and the turnover unit in the embodiment 3 of the present application;

[0033] Figure 4 It is a right view of the lower limit block and the U-shaped block in the embodiment 4 of the present application. DETAILED DESCRIPTION

[0034] The following will be further described in detail through specific embodiments:

[0035] The reference signs in the drawings of the specification comprise: a rack 1, a guide seat 11, a fixed disc 12, a rotating disc 13, a horizontal pushing member 14, a mounting rack 2, a sliding block 21, a belt 22, a workpiece clamp 3, a rotating shaft 31, a first clamp 32, a second clamp 33, a moving rack 4, a cutter 41, an adhesive tape clamp 42, a lower limit block 43, a guide roller 44, a support 45, a guide groove 46, a U-shaped block 47, a base frame 5, a limiting rod 51, a mounting seat 6, a pressing member 61, a turnover driving member 7, a vertical pushing member 8 and a clamping member 9.

[0036] Embodiment 1​

[0037] A double-axle wrapping machine with a pressure roller, such as shown in Figure 1 and Figure 2 includes a frame 1, two winding units and two cutting units, the frame 1 in this embodiment is L-shaped. Taking the winding unit on the left side as an example, the winding unit includes a workpiece clamp 3 and a winding drive, a reverse U-shaped guide seat 11 is installed on the frame 1 by screws, and an annular sliding block 21 is sleeved on the guide seat 11, and the sliding block 21 is in clearance fit with the guide seat 11. The top of the sliding block 21 is installed with a mounting bracket by screws, the mounting bracket in this embodiment is composed of two vertical plate bodies, the workpiece clamp 3 is arranged on the front side of the mounting bracket, the workpiece clamp 3 in this embodiment adopts the existing structure, and the workpiece clamp 3 in this embodiment is limited by the groove arranged on the workpiece clamp 3 to accommodate the end of the workpiece. In actual implementation, the workpiece clamp 3 can also adopt the existing jaw or chuck structure.

[0038] The rear end of the workpiece clamp 3 is connected with a rotating shaft 31 by screws, the rear end of the rotating shaft 31 penetrates the mounting bracket, and bearings are arranged between the rotating shaft 31 and the two plate bodies of the mounting bracket. The middle part of the rotating shaft 31 is key-connected with a pulley, the winding drive is installed on the rear plate body by screws, and the winding drive is a forward and reverse drive, specifically, a stepping motor is adopted in this embodiment, the output shaft of the winding drive penetrates the rear plate body, and the winding drive drives the two rotating shafts 31 to rotate through the belt 22.

[0039] The cutting unit is located above the mounting bracket, and the cutting unit includes a moving frame 4, a cutter 41, a linear drive, a first drive and a second drive. The first drive and the second drive in this embodiment both adopt air cylinders, the push rod of the first drive and the push rod of the second drive are spatially perpendicular, specifically, the push rod of the first drive is horizontal, and the push rod of the second drive is vertical. The first drive is installed on the vertical part of the frame 1 by bolts, the push rod of the first drive is installed with a base 5 by a flange plate, the second drive is installed on the base 5 by bolts, and the push rod of the second drive is connected with the moving frame 4 by a flange plate.

[0040] The cutter 41 and the linear drive in this embodiment are both provided with two, and the two cutters 41 are opposite to the two workpiece clamps 3 respectively, and the two linear drives are opposite to the two cutters 41 respectively. The linear drive is installed on the moving frame 4 by bolts, the linear drive in this embodiment also adopts an air cylinder, the cutting edges of the cutters 41 on the push rods of the linear drives are all downward, and the cutter 41 is installed on the push rod of the linear drive by screws.

[0041] Two lower limit blocks 43 are installed on the moving frame 4 by screws, and the two lower limit blocks 43 are perpendicular to the moving frame 4. The two lower limit blocks 43 are respectively located on the left side of the two cutting knives 41, and the cutting knife 41 is higher than the bottom of the lower limit block 43 after the linear driving piece is slid upward, and in the embodiment, the horizontal distance between the left wall of the cutting knife 41 and the right wall of the lower limit block 43 is 1-5cm. The left side of the lower limit block 43 is provided with a guide roller 44, and the guide roller 44 is installed on the moving frame 4 by screws, and the bottom of the guide roller 44 is lower than the bottom of the lower limit block 43.

[0042] The bottom frame 5 is provided with two groups of upper limit rods 51, and the two groups of upper limit rods 51 are respectively located above the two cutting knives 41. In actual implementation, each group of upper limit rods 51 is provided with a plurality of rod bodies, and the rod bodies of the same group are distributed from top to bottom, and all the rod bodies are perpendicular to the moving frame 4, which is used for guiding the adhesive tape. The top of the bottom frame 5 is provided with two fixed discs 12, and the left end of the fixed disc 12 is provided with a rotating shaft installed by screws. The rotating shaft penetrates through the bottom frame 5 and is provided with a bearing between the bottom frame 5, so that the fixed disc 12 can rotate relative to the bottom frame 5. When coating, the adhesive tape to be used is wound on the I-shaped roller shaft, and during installation, the roller shaft is installed on the fixed disc 12 by bolts.

[0043] The moving frame 4 is provided with two mounting seats 6, and the two mounting seats 6 are respectively located on the right side of the two cutting knives 41. The bottom of the mounting seat 6 is provided with a pressing piece 61. In the embodiment, the pressing piece 61 adopts the existing roller, and the structure and installation method of the roller are the same as those of the prior art, and the embodiment will not be described again. The downward projection of the pressing piece 61 in the embodiment is located on the front side of the workpiece clamp 3, and the outer peripheral wall of the pressing piece 61 is sleeved with a protective sleeve made of elastic rubber material. The mounting seat 6 is provided with a guide rod, specifically, the guide rod is connected with the mounting seat 6 by bolts, and the upper end of the guide rod penetrates through the moving frame 4 vertically and is gap-fitted with the moving frame 4. The linear buffer is provided between the mounting seat 6 and the moving frame 4. In the embodiment, the linear buffer adopts a spring, the spring is sleeved on the guide rod, and the two ends of the spring are respectively abutted with the moving frame 4 and the mounting seat 6. In the embodiment, the spring is in a compressed state, which ensures that the pressing piece 61 can press on the side surface of the workpiece under the action of the spring, and can move upward when being pushed upward.

[0044] The moving frame 4 is provided with two adhesive tape pulling units, and the two adhesive tape pulling units are respectively located on the right side of the two pressing pieces 61. Taking the left adhesive tape pulling unit as an example, the adhesive tape pulling unit comprises an adhesive tape clamp 42 and a fixed frame. The fixed frame is arranged on the front side of the moving frame 4 and is in sliding fit with the moving frame 4 in the horizontal direction. The moving frame 4 is provided with an adhesive tape pulling driving piece. Specifically, the adhesive tape pulling driving piece in the embodiment also adopts a pneumatic cylinder. The pushing rod of the adhesive tape pulling driving piece is connected with the fixed frame through a flange plate, which is used to drive the fixed frame to slide left and right.

[0045] The tape clamp 42 is installed at the rear of the fixed frame, and the tape clamp 42 is opposite to the lower limit block 43 and faces the pressing piece 61. Taking the left cutter 41, the pressing piece 61 and the tape clamp 42 as an example, initially, the cutter 41 and the tape clamp 42 are respectively located on the left and right sides of the pressing piece 61. The tape clamp 42 in the embodiment adopts the existing clamping jaw, and the specific structure, installation mode and movement process are the same as those of the prior art, and will not be described herein.

[0046] The specific implementation process is as follows:

[0047] Taking the workpiece with an octagonal cross section as an example, initially, the moving frame 4 is located above the workpiece clamp 3. Before the coating, the free end of the tape is pulled downward and then pulled from below the lower limit block 43 to below the cutter 41 after passing around the lower side of the guide roller 44. Since the distance between the cutter 41 and the lower limit block 43 is small, the part of the tape located on the right side of the lower limit block 43 is short, and can be kept horizontal under the limiting action of the lower limit block 43. At this time, the side wall of the free end of the tape provided with adhesive faces downward. In this process, the tape is guided and limited by the upper limit rod 51 and the lower limit block 43.

[0048] When coating, the tape driving piece drives the fixed frame to slide to the left. After the free end of the tape is clamped by the tape clamp 42, the fixed frame is driven to slide to the right by the tape driving piece to reset. Finally, the tape driving piece is turned off. At this time, the tape is stretched horizontally above the workpiece clamp 3. While the fixed frame slides to the left, the rear end of the workpiece is manually clamped into the workpiece clamp 3, and the workpiece is positioned by the workpiece clamp 3.

[0049] Then, the moving frame 4 is driven to slide downward by the second driving piece, so that the lower limit block 43 slides to a position below the top of the workpiece. At this time, the part of the tape close to the free end is pasted on the top of the workpiece, and the pressing piece 61 is pressed on the workpiece, so as to improve the pressure between the tape and the workpiece, and make the pasting effect between the tape and the workpiece better. Then, the tape clamp 42 is controlled to loosen the free end of the tape, and the workpiece clamp 3 is driven to rotate counterclockwise by a certain angle by the winding driving piece. Until the free end of the tape passes through the pressing piece 61 and is pasted on the workpiece under the action of the pressing piece 61. Then, the workpiece clamp 3 is driven to rotate clockwise by the winding driving piece, so as to wind the tape on the workpiece.

[0050] When the winding requirement is reached or is about to be reached, the first driving member drives the moving frame 4 to slide to the right, so as to reduce the distance between the lower limit block 43 and the cutter 41 and the side surface of the workpiece, so that the free end close to the lower limit block 43 and the free end close to the workpiece are both short after the tape is cut off, and displacement does not occur. Finally, the cutter 41 is driven to slide downward by the linear driving member, and the tape is cut off. At this time, the workpiece is still in a rotating state, and the free end of the tape close to the workpiece is pasted on the workpiece under the action of the pressing member 61. At the same time, the moving frame 4 is controlled to reset to the left by the first driving member, that is, the taping of a workpiece is completed. After the workpiece is taken out from the workpiece clamp 3 and placed in the next workpiece, the above steps are repeated to tape the next workpiece. During the replacement of the workpiece, because the moving frame 4 slides to the left, the distance between the cutter 41, the pressing member 61 and the unused tape and the workpiece is increased, which is more convenient for manual replacement of the workpiece. Secondly, because the moving frame 4 slides to the right only when the taping is about to be completed, there is a relatively large distance between the structures such as the lower limit block 43 and the cutter 41 and the workpiece during the beginning of the taping process. When the workpiece rotates counterclockwise, the tape between the workpiece and the lower limit block 43 will be bent into a U shape. However, because the space is relatively large, and there is an angle less than 180° between the side surface of the workpiece facing the bent tape and the side surface to which the tape is pasted, the bent part of the tape will not be pasted on the workpiece or the lower limit block 43, thereby avoiding the situation that the tape pasted on the lower limit block 43 becomes poor in adhesion, and avoiding the situation that the bent part of the tape pasted on the workpiece bulges because it is not straightened, and further avoiding the situation that the tape loosens.

[0051] Embodiment 2

[0052] On the basis of embodiment 1, the linear buffer in this embodiment adopts a gas cylinder or a linear motor. Taking the gas cylinder as an example, the upper end of the guide rod is connected with the push rod of the gas cylinder. When the side surface of the workpiece far away from the center of the workpiece is upwardly rotated, the mounting seat 6 is driven to gradually slide upward by the gas cylinder. Conversely, the mounting seat 6 is driven to gradually slide downward. In actual implementation, any one of the gas cylinder or the linear motor can be combined with the spring in embodiment 1 to serve as the linear buffer. At this time, the gas cylinder or the linear motor is used to drive the mounting seat 6 to move along the vertical direction by a relatively large distance, and the spring enables the pressing member 61 to move vertically within a small range when there is a small protrusion or groove on the workpiece. Different from the case of only arranging the spring, the mounting seat 6 in this embodiment can slide upward by a relatively large distance under the action of the gas cylinder or the linear motor after the taping of a workpiece is completed, so that the pressing member 61 is moved to a position far above the tape clamp 42, thereby further avoiding the situation that the moving member hinders the tape clamp 42 from clamping the tape.

[0053] Embodiment 3

[0054] On the basis of embodiment 1 or 2, as Figure 3As shown, the workpiece clamp 3 in the embodiment comprises a first clamp 32 and a second clamp 33, wherein the first clamp 32 is used for clamping a workpiece in a horizontal state, and the second clamp 33 is used for clamping a workpiece in a vertical state. The first clamp 32 is located below the lower plate body, and the second plate body is located above the upper plate body. The first clamp 32 and the second clamp 33 are respectively used for clamping workpieces in vertical and horizontal states, and the front end and the rear end of the rotating shaft 31 are coaxially connected with the first clamp 32 and the second clamp 33 respectively.

[0055] In the embodiment, the guide seat 11 and the sliding block 21 are not arranged, and the mounting frame bottom is provided with a T-shaped rotating disc 13 through screws. The rear end of the rotating disc 13 penetrates the rear end of the rack 1 rearward and is provided with a bearing between the rotating disc 13 and the rack 1, so that the rotating disc 13 and the mounting frame are rotationally matched with the rack 1. A rotating driving member is mounted on the rack 1 through screws. The output shaft of the rotating driving member is connected with the bottom of the rotating disc 13 through a shaft coupling, and is used for driving the mounting frame and the rotating disc 13 to rotate.

[0056] The rack 1 is provided with a turnover unit. The turnover unit is located on the side of the mounting frame away from the vertical part of the rack 1 and is opposite to the workpiece clamp 3. The turnover unit comprises a vertical pushing member 8, a horizontal pushing member, a base, a connecting seat, a turnover frame, a turnover driving member 7 and a clamping member 9. The vertical pushing member 8 and the horizontal pushing member are both gas cylinders. The horizontal pushing member is mounted on the horizontal part of the rack 1 through screws, and the push rod of the horizontal pushing member faces upward. The base is connected with the push rod of the horizontal pushing member through a flange plate. The vertical pushing member 8 is mounted on the base through screws, and the push rod of the vertical pushing member 8 faces forward. The connecting seat is connected with the push rod of the vertical pushing member 8 through a flange plate, and the turnover frame is hinged with the connecting seat. The turnover driving member 7 is coaxially connected with the rotation center of the turnover frame through a shaft coupling. The turnover driving member 7 is mounted on the connecting seat through bolts, and the turnover driving member 7 in the embodiment is a stepping motor. The clamping member 9 is mounted on the end of the turnover frame away from the connecting seat through screws, and the clamping member 9 in the embodiment is a conventional clamping jaw.

[0057] The specific implementation process is as follows:

[0058] Initially, the clamping member 9 faces and is directly opposite the first fixture 32. Under the action of the lateral pushing member, the base moves away from the first fixture 32, so that the clamping member 9 does not obstruct the placement of the workpiece into the first fixture 32. When the coating begins, the horizontal workpiece is placed into the first fixture 32, and the first coating is performed using the same steps as in Embodiment 1 or Embodiment 2. After the first coating is completed, the winding drive is turned off and the moving frame 4 and the cutter 41 are reset. Then, the second coating is performed, that is, the coating is performed on the vertical workpiece. During the second coating, the base is first pushed upward by the lateral pushing member, so that the clamping member 9 is close to the workpiece in the first fixture 32. After the clamping member 9 clamps the workpiece, the lateral pushing member resets the base downward. At the same time, the flipping motor is started, and the flipping motor controls the flipping frame 90°, so that the clamping member 9 flips to the forward position. At this time, the workpiece flips to the vertical position. Next, the mounting bracket is rotated 180° by the rotary drive component, so that the second fixture 33 faces forward; simultaneously, the base is moved backward by the vertical push component 8 until the workpiece is aligned with the second fixture 33. Then, the vertical push component 8 is closed, and the clamping component 9 is pushed upward by the horizontal push component until the upper end of the workpiece is engaged in the second fixture 33. The clamping component 9 is then controlled to release the workpiece, and finally, the clamping component 9 is lowered back down by the horizontal push component, thus completing the automatic flipping of the workpiece. Finally, the same steps as in Embodiment 1 or Embodiment 2 are used to complete the second coating. Compared with Embodiment 1 and Embodiment 2, the workpiece in this embodiment is coated twice, and the adhesive tapes for the two coatings intersect in a cross shape.

[0059] Example 4

[0060] Based on Example 1, such as Figure 4 As shown, in this embodiment, the lower limit block 43 is slidably engaged with the movable frame 4. The movable frame 4 is provided with a limiting pusher, specifically, the limiting pusher can be a cylinder or a linear actuator. The push rod of the limiting pusher faces downward, and the push rod of the limiting pusher is fixed to the lower limit block 43 to push the lower limit block 43 to slide vertically. The movable frame 4 is provided with a bracket 45, which is located below the lower limit block 43. In actual implementation, the tape can be passed between the movable frame 4 and the lower limit block 43. Before the cutter 41 cuts the tape, the lower limit block 43 is slid downward to press the tape near its end onto the movable frame 4 to position the tape. However, another implementation method is disclosed in this embodiment:

[0061] The bracket 45 is provided with a guide groove 46 perpendicular to the movable frame 4. A U-shaped block 47 is slidably fitted inside the guide groove 46, with the opening of the U-shaped block 47 facing upwards, forming an upward-facing groove on the U-shaped block 47. In actual implementation, several fixing holes can also be provided at the bottom of the guide groove 46. Screws or bolts or other fasteners can be inserted through the U-shaped block 47 and then through the fixing holes aligned with it to position the U-shaped block 47.

[0062] The U-shaped block 47 in the embodiment is opposite to the lower limit block 43, and one end of the lower limit block 43 is projected in the lateral direction of the groove body in the vertical direction and is opposite to the top of the U-shaped block 47; the other end is projected in the groove body in the vertical direction. Before the cutter 41 slides downward to cut off the adhesive tape, the lower limit block 43 is first pushed downward to abut against the top of the U-shaped block 47, at this time, one end of the adhesive tape is located between the U-shaped block 47 and the lower limit block 43 and is pressed on the U-shaped block 47 by the lower limit block 43, and the other end is opposite to the groove body. In the embodiment, the position of the adhesive tape close to the free end is clamped by the lower limit block 43, further avoiding the displacement of the adhesive tape, at the same time, because of the setting of the groove body, the clamped part of the adhesive tape is small, and the influence on the adhesion of the adhesive tape is small. When the adhesive tape clamp 42 clamps the adhesive tape when the next workpiece is wrapped, the lower limit block 43 slides upward to reduce the restriction on the adhesive tape, in addition, other operations in the embodiment are the same as those in embodiment 1, which will not be described herein.

[0063] The above is only an embodiment of the present application, and common technical solutions and / or characteristics in the scheme are not described in detail. It should be noted that for those skilled in the art, without departing from the technical solutions of the present application, a number of modifications and improvements can be made, which should also be considered as the protection scope of the present application, which will not affect the effect and practicality of the present application. The protection scope of the present application should be subject to the content of its claims, and the specific embodiments in the specification can be used to explain the content of the claims.

Claims

1. A pressure roller type twin-shaft coating machine, comprising a frame, a winding unit, and a cutting unit, wherein the winding unit is located on the frame, the winding unit includes a workpiece clamp and a winding drive, the winding drive being opposite to the workpiece clamp and used to drive the workpiece clamp to rotate, characterized in that: The cutting unit includes a movable frame, a cutter, and a linear drive. The movable frame is slidably engaged with the winding unit. The linear drive is connected to the cutter and is used to drive the cutter to move. The angle between the moving direction of the cutter and the sliding direction of the movable frame is greater than 0° and less than 180°. A mounting frame is rotatably connected to the frame, and the workpiece fixture and the winding drive are both mounted on the mounting frame. The winding unit also includes a rotation drive, which is connected to the mounting frame and used to drive the mounting frame to rotate. The workpiece fixture includes a first fixture and a second fixture, which are distributed circumferentially along the mounting frame. A flipping unit is provided on the frame, which includes a vertical pusher, a horizontal pusher, a base, a connecting seat, a flipping frame, a flipping drive, and a clamping member. The flipping unit is opposite to the mounting frame. The horizontal pusher is mounted on the frame and connected to the base. The vertical pusher is mounted on the base and connected to the connecting seat. The horizontal pusher is used to push the base horizontally, and the vertical pusher is used to push the connecting seat vertically. The flipping frame is rotatably connected to the connecting seat. The flipping drive is mounted on the connecting seat and connected to the flipping frame. The flipping drive is used to drive the flipping frame to rotate. The clamping member is mounted on the flipping frame.

2. The pressure roller type twin-shaft coating machine according to claim 1, characterized in that: The movable frame has a first moving direction and a second moving direction relative to the frame, and the angle between the first moving direction and the second moving direction is greater than 0° and less than 180°.

3. The pressure roller type twin-shaft coating machine according to claim 2, characterized in that: The cutting unit includes a first driving member, which is mounted on the frame and is used to drive the moving frame to slide along a first moving direction.

4. The pressure roller type twin-shaft coating machine according to claim 3, characterized in that: The cutting unit includes a second driving component. The first driving component is connected to a base frame. The second driving component is mounted on the base frame. The second driving component is connected to the movable frame and drives the movable frame to slide along a second moving direction.

5. The pressure roller type twin-shaft coating machine according to claim 1, characterized in that: The movable frame is equipped with a clamping element, the projection of which is located on the side of the workpiece clamp away from the frame.

6. The pressure roller type twin-shaft coating machine according to claim 5, characterized in that: A mounting base is slidably connected to the movable frame, and a linear buffer is provided between the mounting base and the movable frame. The clamping member is installed on the mounting base.

7. The pressure roller type twin-shaft coating machine according to claim 6, characterized in that: The clamping element is rotatably engaged with the mounting base.

8. The pressure roller type twin-shaft coating machine according to claim 1, characterized in that: The movable frame is equipped with a tape-pulling unit, which includes a tape clamp. The cutter and the tape clamp are located on both sides of the workpiece clamp.

9. The roller-type twin-shaft coating machine according to claim 8, characterized in that: The adhesive-pulling unit also includes a fixing frame, which is slidably engaged with the movable frame, and the fixing frame slides toward the side closer to the cutter.

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