Leather embossing machine capable of improving embossing precision

Abstract

The leather embossing machine is characterized in that a control device is provided with a control circuit, a press-through detection circuit and an oil way control system, the control circuit is respectively and electrically connected with the press-through detection circuit and the oil way control system, an oil cylinder is connected with the oil way control system, a conductive rubber mat is movably mounted at the upper part of a lower top plate, and the conductive rubber mat is connected with the oil way control system. An upper mold is arranged between the upper heating plate and the lower top plate, the upper mold and the conductive rubber mat are electrically connected with a press-through detection circuit, the oil way control system is provided with a pressure sensor, and the pressure sensor is electrically connected with a control circuit. Before embossing, the oil cylinder firstly drives the lower top plate to move upwards until the upper mold presses the leather, the upper mold is in contact with the conductive rubber mat to form a loop with the press-through detection circuit, and the control circuit reads the pressure value of the pressure sensor, so that the press-through pressure value of the leather is obtained, and the embossing pressure is conveniently adjusted during embossing; the embossing precision can be accurately controlled, and the leather is prevented from being damaged while the embossing depth is increased.

Description

TECHNICAL FIELD

[0001] The utility model relates to leather embossing machine technical field especially is leather embossing machine of improving embossing precision. BACKGROUND

[0002] Leather embossing machine is through including oil pressure embossing machine and roll embossing machine, roll embossing machine is through two pressure rollers with the texture to leather embossing, embossing precision is high, production efficiency is high, and the depth of the indentation produced to leather is small, so the damage to leather is also lighter, and oil pressure embossing machine realizes embossing through the closing of the upper and lower molds driven by the oil cylinder, which can provide a larger pressure and can emboss deeper lines on thicker leather, resulting in good embossing effect, but it is difficult to accurately control the embossing precision, and the embossing precision is poor. When embossing the leather on one side, the mold on one side is a flat mold, which can easily penetrate the leather when embossing the leather on one side, resulting in damage to the leather. Therefore, it is necessary to improve. SUMMARY

[0003] In view of the deficiencies in the prior art, the utility model aims to provide a leather embossing machine that improves embossing precision, improves the embossing precision of the embossing machine, and prevents damage to the leather.

[0004] In order to achieve the above-mentioned purpose, the utility model adopts the technical scheme of: a leather embossing machine that improves embossing precision, comprising a machine box, a control device, an upper heating plate, a lower top plate and an oil cylinder, the upper heating plate is arranged on the upper part of the machine box, the lower top plate is arranged on the lower part of the machine box, the oil cylinder is arranged on the lower part of the machine box, the piston rod of the oil cylinder is in abutting engagement with the lower top plate, the control device is arranged on one side of the machine box, the upper heating plate and the lower top plate are respectively electrically connected with the control device, the control device is provided with a control circuit, a penetration detection circuit and an oil circuit control system, the control circuit is respectively electrically connected with the penetration detection circuit and the oil circuit control system, the oil cylinder and the oil circuit control system are connected, the upper part of the lower top plate movably installs a conductive rubber pad, an upper mold is arranged between the upper heating plate and the lower top plate, the upper mold and the conductive rubber pad are respectively electrically connected with the penetration detection circuit, the oil circuit control system is provided with a pressure sensor, and the pressure sensor is electrically connected with the control circuit.

[0005] In a further technical solution, the upper part of the lower top plate is provided with an installation slot with an opening facing upward, the conductive rubber pad is embedded in the installation slot, and the top surface of the conductive rubber pad and the top surface of the lower top plate are located on the same horizontal plane.

[0006] In a further technical solution, the width of the installation slot along the transverse direction is greater than the width of the upper mold along the transverse direction, the left and right sides of the conductive rubber pad respectively extend beyond the left and right sides of the upper mold, the lower top plate is provided with two fixed pressing strips, the two fixed pressing strips are respectively pressed and fixed on the left and right sides of the conductive rubber pad, and the two fixed pressing strips are respectively located on the left and right sides of the upper mold and have a first insulating gap between the upper mold.

[0007] Further technical solutions, the lower part of the two fixed compression strips is spaced apart in the longitudinal direction and is provided with a plurality of upper magnets, the left and right sides of the mounting groove are spaced apart in the longitudinal direction and are provided with a plurality of lower magnets, and each upper magnet is magnetically attracted to each corresponding lower magnet.

[0008] Further technical solutions, the lower top plate is further provided with a lower mold, the left and right sides of the lower part of the lower mold are provided with fixing grooves in the longitudinal direction, and the two fixed compression strips are respectively inserted into the two fixing grooves. The front and rear ends of each fixed compression strip respectively extend upward to form two limiting columns, and the two limiting columns are respectively in abutting cooperation with the front and rear sides of the lower mold.

[0009] Further technical solutions, the leather embosser is further provided with an automatic feeding device, the automatic feeding device comprises a feeding frame, a feeding driving mechanism and a feeding rotary arm, the feeding frame is vertically slidably installed on the cabinet, and the lower top plate is longitudinally slidably installed on the feeding frame. The feeding driving mechanism is in transmission connection with the feeding frame.

[0010] The left and right sides of the rear end of the upper mold extend to form two connecting columns, the left and right sides of the lower top plate extend upward to form two limiting baffle plates, the rear parts of the opposite surfaces of the two limiting baffle plates are provided with connecting blocks, the opposite surfaces of the two connecting blocks are provided with grooves with upward openings, the two connecting columns are respectively inserted into the two grooves, and one end of the feeding rotary arm is hinged to the cabinet and the other end is hinged to the front part of the upper mold.

[0011] Further technical solutions, the two grooves are respectively embedded with insulating sleeves, the outer ends of the two connecting columns are respectively in abutting cooperation with the inner walls of the insulating sleeves, and the left and right sides of the upper mold are respectively provided with a second insulation gap between the two connecting blocks.

[0012] Further technical solutions, the upper edges of the two grooves are respectively provided with guide inclined surfaces.

[0013] Further technical solutions, the feeding rotary arm comprises a feeding large arm and a feeding small arm, the first end of the feeding large arm is hinged to the cabinet, the second end of the feeding large arm is hinged to the first end of the feeding small arm, the top surface of the front part of the upper mold is provided with a connecting seat and a latch, the latch is movably inserted into the connecting seat in the transverse direction, and the second end of the feeding small arm is hinged to the latch.

[0014] Further technical solutions, the front side of the cabinet is provided with two safety operation bosses in the longitudinal direction, the two safety operation bosses are respectively located on the left and right sides of the lower top plate, the outer ends of the two safety operation bosses are respectively provided with embossing start buttons and embossing stop buttons, and the two embossing start buttons and the two embossing stop buttons are respectively in electrical connection with the control circuit.

[0015] Compared with the prior art, the utility model has the advantages that before embossing, the oil cylinder is driven by the control device to move up against the lower top plate, until the upper die is pressed through the leather, the upper die contacts the conductive rubber pad and forms a loop with the pressure-through detection circuit, at the moment, the control circuit reads the pressure value of the pressure sensor, so that the pressure-through pressure value of the leather is obtained, the embossing pressure is convenient to adjust when embossing, the embossing precision can be accurately controlled, the embossing depth is improved while avoiding damaging the leather, the safety is improved when feeding by driving the lower top plate to move out of the upper part of the oil cylinder, without needing to put both hands between the lower top plate and the upper die to feed, the safety is improved. BRIEF DESCRIPTION OF DRAWINGS

[0016] The utility model is further explained in connection with the drawings and examples.

[0017] Figure 1 It is the structure schematic diagram of the utility model;

[0018] Figure 2 It is the connection block diagram of the utility model.

[0019] Figure 3 It is the structure schematic diagram when the lower top plate of the utility model installs the lower die;

[0020] Figure 4 It is the exploded view of the lower top plate, fixed pressing strip and upper die of the utility model;

[0021] Figure 5 It is the plan view of the lower top plate, fixed pressing strip and upper die of the utility model;

[0022] Figure 6 It is the A part enlarged view of the utility model; Figure 5

[0023] Figure 7 It is the partial section view of the lower top plate, fixed pressing strip and upper die of the utility model;

[0024] In the drawing:

[0025] 1 machine case, 11 safety operation boss, 12 embossing start button, 13 embossing stop button;

[0026] 2 control device;

[0027] 3 upper heating plate;

[0028] 4 lower top plate, 41 installation slot, 411 lower magnet, 42 limit baffle, 43 connecting block, 431 sliding slot, 432 guide inclined surface, 44 insulating sleeve, 45 first insulating gap, 46 second insulating gap;

[0029] 5 conductive rubber pad; ​

[0030] 61 Upper mold, 611 Connecting seat, 612 Pin, 613 Connecting column, 62 Lower mold, 621 Fixing groove;

[0031] 7. Fixed pressure strip; 71. Upper magnet; 72. Limiting post;

[0032] 81 Feeding boom, 82 Feeding arm. Detailed Implementation

[0033] The following are merely preferred embodiments of the present invention and do not limit the scope of protection of the present invention.

[0034] A leather embossing machine that improves embossing precision, such as Figures 1 to 7 As shown, the system includes a chassis 1, a control device 2, an upper heating plate 3, a lower top plate 4, and a hydraulic cylinder. The upper heating plate 3 is located at the top of the chassis 1, and the lower top plate 4 is located at the bottom of the chassis 1. The hydraulic cylinder is located at the bottom of the chassis 1, and the piston rod of the hydraulic cylinder abuts against the lower top plate 4. The control device 2 is located on one side of the chassis 1. The upper heating plate 3 and the lower top plate 4 are electrically connected to the control device 2. The control device 2 is equipped with a control circuit, a pressure puncture detection circuit, and a hydraulic circuit control system. The control circuit is electrically connected to both the pressure puncture detection circuit and the hydraulic circuit control system. The hydraulic cylinder is connected to the hydraulic circuit control system. A conductive rubber pad 5 is movably installed on the upper part of the lower top plate 4. An upper mold 61 is provided between the upper heating plate 3 and the lower top plate 4. The upper mold 61 and the conductive rubber pad 5 are electrically connected to the pressure puncture detection circuit. The hydraulic circuit control system is equipped with a pressure sensor, which is electrically connected to the control circuit. Traditional hydraulic leather embossing machines struggle to control embossing precision. While double-sided embossing allows for control of the maximum embossing depth through the gap between the upper and lower molds 62, preventing leather puncture, single-sided embossing is difficult, easily resulting in leather puncture. This invention, however, before embossing, uses a control device to drive a hydraulic cylinder to move the lower top plate 4 upwards until the upper mold 61 punctures the leather. The upper mold 61 then contacts the conductive pad 5, forming a circuit with the puncture detection circuit. The control circuit reads the pressure value from the pressure sensor, obtaining the puncture pressure value. This allows for easy adjustment of the embossing pressure, precisely controlling embossing accuracy and improving embossing depth while preventing leather damage. The upper heating plate 3 contains a heating element connected to the control circuit. The control circuit powers the heating element, heating the leather during embossing and improving the embossing effect. The control circuit regulates the temperature by controlling the power of the heating element.

[0035] Specifically, the upper part of the lower top plate 4 is provided with an installation groove 41 with an upward opening, and the conductive rubber pad 5 is embedded in the installation groove 41, and the top surface of the conductive rubber pad 5 is at the same horizontal plane as the top surface of the lower top plate 4. The conductive rubber pad 5 is flush with the lower top plate 4, avoiding accidental contact between the protruding conductive rubber pad 5 and the upper die 61 during embossing, and improving the detection accuracy of the pressure detection circuit. The conductive rubber pad 5 can also act as a buffer during embossing, further reducing the risk of leather damage and improving embossing quality.

[0036] Specifically, the width of the installation groove 41 along the transverse direction is greater than the width of the upper die 61 along the transverse direction, and the left and right sides of the conductive rubber pad 5 protrude beyond the left and right sides of the upper die 61, and the lower top plate 4 is provided with two fixed pressing strips 7, and the two fixed pressing strips 7 are respectively pressed and fixed on the left and right sides of the conductive rubber pad 5, and the two fixed pressing strips 7 are respectively located on the left and right sides of the upper die 61 and have a first insulation gap 45 with the upper die 61. The left and right sides of the conductive rubber pad 5 protrude beyond the upper die 61 and are tightly pressed and fixed on the lower top plate 4 by the fixed pressing strips 7, avoiding displacement of the conductive rubber pad 5, and the fixed pressing strips 7 avoid contact with the upper die 61 through the first insulation gap 45, thereby preventing the upper die 61, the fixed pressing strips 7 and the conductive rubber pad 5 from contacting each other and forming a loop with the pressure detection circuit, and the fixed pressing strips 7 can be made of metal material to improve the fixing strength.

[0037] Specifically, the lower part of the two fixed pressing strips 7 is provided with a plurality of upper magnets 71 along the longitudinal direction, and the left and right sides of the installation groove 41 are respectively provided with a plurality of lower magnets 411 along the longitudinal direction, and each upper magnet 71 is respectively magnetically attracted to each corresponding lower magnet 411. The fixed pressing strips 7 and the lower top plate 4 are magnetically attracted and fixed by the upper magnets 71 and the lower magnets 411, thereby clamping and fixing the conductive rubber pad 5 between the fixed pressing strips 7 and the lower top plate 4, facilitating the replacement of the conductive rubber pad 5 by disassembling the fixed pressing strips 7, and being convenient to use.

[0038] Specifically, the lower top plate 4 is also provided with a lower die 62, and the left and right sides of the lower part of the lower die 62 are respectively provided with a fixed groove 621 along the longitudinal direction, and the two fixed pressing strips 7 are respectively inserted into the two fixed grooves 621, and the front and rear ends of each fixed pressing strip 7 respectively extend upward to form two limiting columns 72, and the two limiting columns 72 are respectively in abutting cooperation with the front and rear sides of the lower die 62. When double-sided embossing is needed, the lower die 62 is installed, and the lower die 62 is clamped on the two fixed pressing strips 7 through the fixed grooves 621, and the two fixed pressing strips 7 limit the lower die 62 in the transverse direction, and each limiting column 72 limits the lower die 62 in the longitudinal direction, thereby firmly fixing the lower die 62 on the lower top plate 4, at this time the lower die 62 is located above the conductive rubber pad 5 and abuts against the conductive rubber pad 5, and when the upper die 61 contacts the lower die 62 after penetrating the leather, the upper die 61, the lower die 62 and the conductive rubber pad 5 form a loop with the pressure detection circuit, thereby detecting whether the leather is penetrated.

[0039] Specifically, the leather embosser is further provided with an automatic feeding device, the automatic feeding device comprises a feeding frame, a feeding driving mechanism and a feeding rotary arm, the feeding frame is slidingly installed in the vertical direction on the machine box 1, the lower top plate 4 is slidingly installed on the feeding frame in the longitudinal direction, and the feeding driving mechanism is in transmission connection with the feeding frame; the left and right sides of the rear end of the upper die 61 respectively extend two connecting columns 613, the left and right sides of the lower top plate 4 respectively extend two limiting baffle plates 42 upward, the rear parts of the opposite sides of the two limiting baffle plates 42 are respectively provided with connecting blocks 43, the opposite sides of the two connecting blocks 43 are respectively provided with sliding grooves 431 with upward openings, the two connecting columns 613 are respectively inserted into the two sliding grooves 431, and one end of the feeding rotary arm is hinged to the machine box 1 and the other end is hinged to the front part of the upper die 61. The automatic feeding device drives the lower top plate 4 to move out of the upper part of the oil cylinder, so that the safety during feeding and discharging is improved, and it is not necessary to put hands into the space between the lower top plate 4 and the upper die 61 for feeding and discharging, so that the safety is improved. The feeding driving mechanism adopts an oil cylinder or a motor as a driving source, during feeding and discharging, the feeding driving mechanism drives the lower top plate 4 to move forward until the lower top plate 4 moves out of the oil cylinder, and the rear part of the upper die 61 is hinged to the lower top plate 4 through the connecting columns 613, and during the moving-out process, the upper die 61 is rotated upward through the feeding rotary arm, so that the upper die 61 and the lower top plate 4 are separated, and feeding and discharging are facilitated; the pressure detection circuit is directly connected with the upper die 61 through wires, or the pressure detection circuit is connected with the feeding rotary arm through wires and then connected with the upper die 61 through the feeding rotary arm; the pressure detection circuit is connected with the conductive rubber pad 5 through wires, or the pressure detection circuit is connected with the lower top plate 4 through wires and then connected with the conductive rubber pad 5 through the lower top plate 4.

[0040] Specifically, the two sliding grooves 431 are respectively embedded with insulating sleeves 44, the outer ends of the two connecting columns 613 are respectively abutted against the inner walls of the insulating sleeves 44, and the left and right sides of the upper die 61 have a second insulating gap 46 with the two connecting blocks 43. The insulating sleeves 44 and the second insulating gap 46 insulate the upper die 61 and the lower top plate 4, avoid the contact between the two to form a loop with the pressure detection circuit, and improve the reliability and stability, and the insulating sleeves 44 also play a role in preventing abrasion, avoiding the abrasion of the connecting blocks 43 during the rotation of the upper die 61 during feeding and discharging.

[0041] Specifically, the upper edges of the two sliding grooves 431 are respectively provided with guide inclined surfaces 432. The guide inclined surfaces 432 guide the connecting columns 613 during the installation of the upper die 61, and facilitate the replacement of the upper die 61.

[0042] Specifically, the feeding arm includes a feeding boom 81 and a feeding slender arm 82. The first end of the feeding boom 81 is hinged to the housing 1, and the second end of the feeding boom 81 is hinged to the first end of the feeding slender arm 82. The top surface of the front part of the upper mold 61 is provided with a connecting seat 611 and a pin 612. The pin 612 is movably inserted into the connecting seat 611 in the lateral direction, and the second end of the feeding slender arm 82 is hinged to the pin 612. The pin 612 uses a screw and a nut. When replacing the upper mold 61, first remove the nut and take off the screw, thereby separating the feeding arm 82 from the upper mold 61. Then lift the upper mold 61 upwards to move the connecting post 613 out of the slide groove 431, thereby removing the upper mold 61. When installing the upper mold 61, first insert the two connecting posts 613 of the upper mold 61 into the two slide grooves 431, then connect the feeding arm 82 and the connecting seat 611, and insert the screw and tighten the nut, thereby completing the installation and replacement of the upper mold 61. The operation is simple and the replacement is convenient.

[0043] Specifically, the front side of the casing 1 is provided with two safety operation protrusions 11 along the longitudinal direction. The two safety operation protrusions 11 are located on the left and right sides of the lower top plate 4, respectively. The outer ends of the two safety operation protrusions 11 are respectively provided with an embossing start button 12 and an embossing stop button 13, which are electrically connected to the control circuit. During embossing, pressing the two embossing start buttons 12 simultaneously activates the feeding drive mechanism and the hydraulic cylinder to perform embossing. After embossing is completed, pressing the two embossing stop buttons 13 simultaneously activates the feeding drive mechanism and the hydraulic cylinder to reverse, thereby removing the leather. This avoids accidental activation caused by single-button control, improving safety. Furthermore, a safety zone is formed between the two safety operation protrusions 11 to prevent operators from operating from the side, further enhancing safety.

[0044] It is important to understand that the terms "front," "back," "left," and "right," etc., indicate directions or positional relationships based on... Figure 1 The orientations or positional relationships shown, with "longitudinal" along the front-back direction and "lateral" along the left-right direction, are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limiting the scope of protection of this utility model.

[0045] The above description is only a preferred embodiment of this utility model. For those skilled in the art, there will be changes in the specific implementation method and application scope based on the idea of ​​this utility model. The content of this specification should not be construed as a limitation of this utility model.

Claims

1. A leather embossing machine for improving embossing accuracy, comprising a machine box (1), a control device (2), an upper heating plate (3), a lower top plate (4) and an oil cylinder, the upper heating plate (3) is arranged at the upper part of the machine box (1), the lower top plate (4) is arranged at the lower part of the machine box (1), the oil cylinder is arranged at the lower part of the machine box (1), the piston rod of the oil cylinder is in abutting cooperation with the lower top plate (4), the control device (2) is arranged at one side of the machine box (1), and the upper heating plate (3) and the lower top plate (4) are respectively electrically connected with the control device (2), characterized in that: The control device (2) is provided with a control circuit, a pressure detection circuit and an oil circuit control system, the control circuit is electrically connected with the pressure detection circuit and the oil circuit control system respectively, the oil cylinder is connected with the oil circuit control system, the upper part of the lower top plate (4) is movably provided with a conductive rubber pad (5), the upper heating plate (3) and the lower top plate (4) are provided with an upper mold (61), the upper mold (61) and the conductive rubber pad (5) are electrically connected with the pressure detection circuit respectively, and the oil circuit control system is provided with a pressure sensor, which is electrically connected with the control circuit. ​ 2. The leather embosser of claim 1, wherein: The upper part of the lower top plate (4) is provided with an installation groove (41) with an upward opening, and the conductive rubber pad (5) is embedded in the installation groove (41), and the top surface of the conductive rubber pad (5) is located on the same horizontal plane as the top surface of the lower top plate (4).

3. The leather embosser of claim 2, wherein: The width of the installation groove (41) along the transverse direction is greater than the width of the upper mold (61) along the transverse direction, the left and right sides of the conductive rubber pad (5) extend beyond the left and right sides of the upper mold (61), and the lower top plate (4) is provided with two fixed pressing strips (7), which are respectively pressed and fixed on the left and right sides of the conductive rubber pad (5), and the two fixed pressing strips (7) are respectively located on the left and right sides of the upper mold (61) and have a first insulation gap (45) between the upper mold (61).

4. The leather embosser of claim 3, wherein: The lower part of the two fixed pressing strips (7) is provided with a plurality of upper magnets (71) in the longitudinal direction, and the left and right sides of the installation groove (41) are respectively provided with a plurality of lower magnets (411) in the longitudinal direction, and each upper magnet (71) is respectively magnetically attracted to each corresponding lower magnet (411).

5. The leather embosser of claim 3, wherein: The lower top plate (4) is also provided with a lower mold (62), and the left and right sides of the lower part of the lower mold (62) are respectively provided with a fixed groove (621) in the longitudinal direction, and the two fixed pressing strips (7) are respectively inserted into the two fixed grooves (621), and the front and rear ends of each fixed pressing strip (7) respectively extend upward to form two limiting columns (72), and the two limiting columns (72) are respectively abutted with the front and rear sides of the lower mold (62).

6. The leather embosser of any one of claims 1 to 5, wherein: The leather embossing machine is also provided with an automatic feeding device, which comprises a feeding frame, a feeding driving mechanism and a feeding rotating arm, the feeding frame is slidably installed on the machine box (1) in the vertical direction, and the lower top plate (4) is slidably installed on the feeding frame in the longitudinal direction. The left and right sides of the rear end of the upper mold (61) extend to form two connecting columns (613), the left and right sides of the lower top plate (4) extend upward to form two limiting baffle plates (42), the rear parts of the opposite sides of the two limiting baffle plates (42) are respectively provided with connecting blocks (43), the opposite sides of the two connecting blocks (43) are provided with sliding grooves (431) with upward openings, and the two connecting columns (613) are respectively inserted into the two sliding grooves (431), one end of the feeding rotating arm is hinged to the machine box (1), and the other end is hinged to the front part of the upper mold (61).

7. The leather embosser of claim 6, wherein: Two insulating sleeves (44) are respectively embedded in the two sliding grooves (431), and the outer ends of the two connecting columns (613) respectively abut against the inner walls of the insulating sleeves (44); the left and right sides of the upper mold (61) respectively have a second insulating gap (46) with the two connecting blocks (43).

8. The leather embosser of claim 7, wherein: The upper edges of the two sliding grooves (431) are respectively provided with guide inclined surfaces (432).

9. The leather embosser of claim 6, wherein: The feeding rotating arm comprises a feeding large arm (81) and a feeding small arm (82), the first end of the feeding large arm (81) is hingedly connected to the cabinet (1), the second end of the feeding large arm (81) is hingedly connected to the first end of the feeding small arm (82), the top surface of the front part of the upper mold (61) is provided with a connecting seat (611) and a plug pin (612), the plug pin (612) is movably inserted into the connecting seat (611) along the transverse direction, and the second end of the feeding small arm (82) is hingedly connected to the plug pin (612).

10. The leather embosser of claim 6, wherein: The front side of the cabinet (1) is provided with two safety operation bosses (11) along the longitudinal direction, the two safety operation bosses (11) are respectively located on the left and right sides of the lower top plate (4), the outer ends of the two safety operation bosses (11) are respectively provided with embossing start keys (12) and embossing stop keys (13), and the two embossing start keys (12) and the two embossing stop keys (13) are respectively electrically connected with the control circuit.

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