Double-die book punching device

Abstract

The utility model provides a double-die book punching device which comprises a machine frame, a linear sliding rail is arranged on the machine frame, an upper punching movable die, an upper punching fixed die, a lower punching fixed die and a lower punching movable die are sequentially arranged along the linear sliding rail, a paper conveying channel is arranged on the punching fixed die, a punching punching needle is arranged on the punching movable die, and the paper conveying channel is communicated with the punching punching needle. The two punching movable dies are driven by a cam transmission mechanism arranged on the machine frame and do reciprocating motion in the opposite directions along the linear sliding rail, and the cam transmission mechanism comprises a transmission shaft, two pairs of eccentric cams and two pairs of punching rocker arms. The punching movable die is provided with a needle drawing cavity and a needle drawing plate at the bottom end of the punching needle, and a spring plunger vertically facing the needle drawing plate is arranged. The double-die book punching device is compact in structure and reasonable in design, punching of inner pages and cover pages of a book can be completed synchronously, the material circulation and distribution procedures are effectively reduced, the cam and the rocker arm are adopted for matched transmission, the working stability is effectively improved, the service life of equipment is effectively prolonged, meanwhile, punching needles do not need to be taken out by disassembling the equipment during needle drawing, and operation is simpler and more convenient.

Description

Technical Field

[0001] The utility model belongs to the technical field of book-type product processing and manufacturing equipment, and specifically relates to a double-die book-type punching device. Background Art

[0002] In the production and binding process of some loose-leaf book products such as desk calendars and wall calendars, the cover page and inner page of the book need to be punched. Since the sizes of the cover page and the inner page are often different, and the hardness and thickness of the paper are also different, it is not suitable to stack them together and punch them at the same time. Therefore, the existing punching equipment usually needs to punch the cover page and the inner page separately, that is, two punching actions are required to complete the punching operation, which reduces the punching efficiency and increases the number of equipment and processing procedures. There are also some double-mold punching devices in the prior art, which can punch the cover and the inner page at the same time. For example, the utility model with application number 202020302201.8 discloses a double-mold punching machine and a punching and binding machine. In the technical solution provided by the patent, two sets of punching dies are driven by hinged swing rods and connecting rods. The double-mold punching equipment has a relatively complex structure, insufficient stability, and the equipment has a large operating noise. In addition, the articulated transmission part is subjected to a large force, which is prone to loosening over time, and the equipment failure rate is high, and the punching quality is easily affected. In addition, when the existing punching equipment is used to punch and extract the needle, it is often necessary to disassemble the equipment and take out the needle, which is cumbersome to operate and has low working efficiency. Utility Model Content

[0003] In view of the defects of the prior art, the utility model provides a double-mold book punching device driven by an eccentric wheel and a rocker arm, which can punch holes on the inner pages and the cover of the book at the same time. To achieve the above technical purpose, the technical solution adopted by the utility model is as follows:

[0004] A double-mold booklet punching device comprises a frame, a linear slide rail is arranged on the frame, the linear slide rail has a certain inclination angle, and an upper punching movable mold, an upper punching fixed mold, a lower punching fixed mold and a lower punching movable mold are arranged in sequence from top to bottom along the linear slide rail in a horizontal direction and perpendicular to the linear slide rail, wherein the upper punching fixed mold and the lower punching fixed mold are fixedly arranged side by side on the frame, and the upper punching fixed mold and the lower punching fixed mold are respectively provided with a paper transmission channel with an opening facing upward along the length direction, and a plurality of punching needles are installed on the upper punching movable mold and the lower punching movable mold along the length direction, and the punching needles face the upper punching fixed mold and the lower punching fixed mold respectively, and the upper punching fixed mold and the lower punching fixed mold are provided with through holes matching the punching needles, and the through holes are distributed along the paper transmission channel; a cam transmission mechanism is arranged on the frame, and the upper punching movable mold and the lower punching movable mold are driven by the cam transmission mechanism to reciprocate in opposite directions along the linear slide rail.

[0005] Preferably, the cam transmission mechanism includes a transmission main shaft parallel to the upper punching movable mold and the lower punching fixed mold, and both ends of the transmission main shaft are provided with an outer eccentric cam and an inner eccentric cam, the outer eccentric cam is connected to the upper punching rocker arm, one end of the upper punching rocker arm is sleeved on the outer edge of the outer eccentric cam, and the other end is respectively connected to the two ends of the upper punching movable mold, the inner eccentric cam is connected to the lower punching rocker arm, one end of the lower punching rocker arm is sleeved on the outer edge of the inner eccentric cam, and the other end is respectively connected to the two ends of the lower punching movable mold, a motor is provided on the frame, and the transmission main shaft is driven to rotate by the motor.

[0006] Furthermore, the outer eccentric cam and the inner eccentric cam are respectively eccentrically sleeved on the transmission main shaft, and the eccentric direction of the outer eccentric cam is opposite to that of the inner eccentric cam. When the transmission main shaft rotates, the outer eccentric cam and the inner eccentric cam respectively drive the upper punching rocker arm and the lower punching rocker arm to move synchronously in opposite directions, thereby driving the upper punching movable mold and the lower punching movable mold to move synchronously in opposite directions along the linear slide rail.

[0007] Furthermore, an upper slider seat and a lower slider seat are movably provided along the linear slide rail, the upper punching movable mold is installed on the upper slider seat, the lower punching movable mold is installed on the lower slider seat, the upper punching rocker arm is connected to both sides of the upper slider seat, and the lower punching rocker arm is connected to both sides of the lower slider seat.

[0008] Furthermore, connecting bearings are provided between the upper perforated rocker arm and the upper slider seat, and between the lower perforated rocker arm and the lower slider seat.

[0009] Preferably, the upper punching movable die and the lower punching movable die are provided with a needle extraction cavity at the bottom end of each punching needle, a pluggable needle extraction plate is provided perpendicular to each punching needle, and a step portion is provided at the bottom end of the punching needle.

[0010] Furthermore, spring plungers are provided on the upper punching movable die and the lower punching movable die vertically toward each needle withdrawal plate, and the needle withdrawal plate is provided with a first limiting concave hole and a second limiting concave hole matching the spring plunger head.

[0011] Compared with the prior art, the beneficial effects of the utility model are:

[0012] 1. The structure is compact and the design is reasonable. Two pairs of cams are used to control the two pairs of rocker arms to move up and down respectively. The rocker arms drive the two sets of punching dynamic molds to move toward or relative to each other, so that two sets of molds can punch holes at the same time. The inner pages and cover pages of the book can be punched synchronously, which can effectively reduce the material flow and distribution process and improve the processing efficiency. At the same time, the cam and rocker arm are used for transmission. Compared with the existing connecting rod transmission method, the working stability and equipment service life are effectively improved.

[0013] 2. The installation structure design of the punching needle is more reasonable. When removing the needle, there is no need to disassemble the equipment to remove the punching needle. The operation is simpler, which can effectively improve work efficiency and save working time. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 : A three-dimensional structural schematic diagram of the utility model.

[0015] Figure 2 : Figure 1 Schematic diagram of the local structure at point A.

[0016] Figure 3 : A side structural schematic diagram of the utility model.

[0017] Figure 4 : A schematic diagram of the local structure of the cam transmission mechanism in the utility model.

[0018] Figure 5 : A schematic diagram of the transverse cross-sectional structure of a punching movable die and a punching fixed die in the utility model.

[0019] In each figure: 1. frame; 11. linear slide rail; 12. motor; 13. upper slider seat; 14. lower slider seat; 2. upper punching movable die; 3. upper punching fixed die; 4. lower punching fixed die; 5. lower punching movable die; 6. paper transmission channel; 7. punching needle; 71. through hole; 72. needle extraction cavity; 73. needle extraction plate; 74. step portion; 75. spring plunger; 76. first limit recessed hole; 77. second limit recessed hole; 8. cam transmission mechanism; 81. transmission main shaft; 82. outer eccentric cam; 83. inner eccentric cam; 84. upper punching rocker arm; 85. lower punching rocker arm; 86. connecting bearing. DETAILED DESCRIPTION

[0020] The following will be combined with the accompanying drawings to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments of the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0021] The utility model provides a double-mold booklet punching device, referring to Figures 1 to 5As shown, it includes a frame 1, on which a linear slide 11 is arranged, and the linear slide 11 has a certain inclination angle, so that the inner pages and cover paper can enter the punching station at a certain inclination angle, and after the punching is completed, it is easier to complete the stacking when it is transferred to the subsequent binding station; along the linear slide 11 from top to bottom, an upper punching movable die 2, an upper punching fixed die 3, a lower punching fixed die 4 and a lower punching movable die 5 are arranged in sequence along the horizontal direction perpendicular to the linear slide 11. The upper punching movable die 2 and the upper punching fixed die 3 constitute a group of upper punching dies, and the lower punching transport die 5 and the lower punching fixed die 4 constitute a group of lower punching dies. The two groups of punching dies are arranged side by side, and the punching operation of the inner pages and cover pages of the book can be completed synchronously. The upper punching fixed die 3 and the lower punching fixed die 4 are fixedly arranged side by side on the frame 1, and paper transmission channels 6 are respectively provided on the upper punching fixed die 3 and the lower punching fixed die 4 along the length direction. The opening of the paper transmission channel 6 faces upward and has an inclination angle perpendicular to the linear slide rail 11. The inner pages and cover pages to be processed are synchronously transmitted to the paper transmission channels 6 on the two punching fixed dies by the transmission mechanism on the punching and binding production line, and punching is performed after aligning them up and down and left and right. The transmission and alignment of paper are mature means in the prior art, and the relevant structures and principles are not the technical content to be protected by the utility model, so they are not elaborated in detail here. A plurality of punching needles 7 are provided on the upper punching movable die 2 and the lower punching movable die 5. The punching needles 7 are distributed along the length direction of the upper punching movable die 2 and the lower punching movable die 5. The top ends of the punching needles 7 face the upper punching fixed die 3 and the lower punching fixed die 4 respectively. The upper punching fixed die 3 and the lower punching fixed die 4 are provided with through holes 71 matching the punching needles 7. The through holes 71 are distributed along the paper transmission channel 6. When the punching movable die moves toward the punching fixed die, the top ends of the punching needles 7 pass through the paper transmission channel 6 to complete the punching. A cam transmission mechanism 8 is provided on the frame 1. The upper punching movable die 2 and the lower punching movable die 5 are driven by the cam transmission mechanism 8 to reciprocate in opposite directions along the linear slide rail 11. The equipment can realize the simultaneous punching of two sets of molds and synchronously complete the punching of the inner pages and cover pages of the book, which can effectively reduce the material flow and distribution process and improve the processing efficiency.

[0022] The specific structure of the cam transmission mechanism 8 is shown in FIG. Figure 1 and Figure 4As shown, it includes a transmission main shaft 81 parallel to the upper punching movable mold 2 and the lower punching movable mold 5, and both ends of the transmission main shaft 81 are provided with an outer eccentric cam 82 and an inner eccentric cam 83, the outer eccentric cam 82 is connected to the upper punching rocker arm 84, one end of the lower punching rocker arm 84 is sleeved on the outer edge of the outer eccentric cam 82, and the other end is respectively connected to the two ends of the upper punching movable mold 2, the inner eccentric cam 83 is connected to the lower punching rocker arm 85, one end of the lower punching rocker arm 85 is sleeved on the outer edge of the inner eccentric cam 83, and the other end is respectively connected to the two ends of the lower punching movable mold 5, and the frame 1 is provided with a motor 12, and the transmission main shaft 81 is driven to rotate by the motor 12. The outer eccentric cam 82 and the inner eccentric cam 83 are eccentrically sleeved on the transmission main shaft 81, and the eccentric direction of the outer eccentric cam 82 is opposite to that of the inner eccentric cam 83. When the transmission main shaft 81 drives the eccentric cams to rotate, the outer edges of the outer eccentric cam 82 and the inner eccentric cam 83 that are farther from the axis of the transmission main shaft 81 rotate in opposite directions, driving the upper punching rocker arm 84 and the lower punching rocker arm 85 to move synchronously in opposite directions, and driving the upper punching movable die 2 and the lower punching movable die 5 to move synchronously in opposite directions along the linear slide rail 11 through the rocker arm. When the upper punching movable die 2 moves downward, the lower punching movable die 5 moves upward, and the two punching movable dies approach the two punching fixed dies in the middle respectively, and the top of the punching needle 7 passes through the paper transmission channel 6 to complete the punching; when the upper punching movable die 2 moves upward and the lower punching movable die 5 moves downward, the two punching movable dies move away from the two punching fixed dies respectively, and the punching needle 7 exits the paper transmission channel 6, and the punched paper is transmitted to the next station. In order to make the upper punching movable mold 2 and the lower punching movable mold 5 run more smoothly, in a preferred embodiment, a movable upper slider seat 13 and a lower slider seat 14 are provided along the linear slide rail 11, the upper punching movable mold 2 is installed on the upper slider seat 13, the lower punching movable mold 5 is installed on the lower slider seat 14, the upper punching rocker arm 84 is connected to both sides of the upper slider seat 13, and the lower punching rocker arm 85 is connected to both sides of the lower slider seat 14. Connecting bearings 86 are provided between the upper punching rocker arm 84 and the upper slider seat 13, and between the lower punching rocker arm 85 and the lower slider seat 14. Compared with the connecting rod transmission method in the prior art, the transmission mode in which the cam and the rocker arm cooperate with each other has better working stability, less noise during equipment operation, and also has a longer service life.

[0023] Extracting the punch needle 7 means removing part of the punch needle from the moving mold or keeping part of the punch needle in an inoperative state to meet the punching requirements of binding holes in different arrangements. Existing punching equipment usually requires disassembling some parts to remove the punch needle, which is cumbersome to operate. The utility model provides an optimal installation structure for the punch needle 7. When extracting the needle, there is no need to disassemble the punch needle 7, which makes the operation easier. Figure 5As shown, the upper punching movable die 2 and the lower punching movable die 5 are provided with a needle extraction cavity 72 at the bottom end of each punching needle 7, a pluggable needle extraction plate 73 is provided perpendicular to the punching needle 7, and a step portion 74 is provided at the bottom end of the punching needle 7. Spring plungers 75 are respectively provided vertically toward each needle extraction plate 73 on the upper punching movable die 2 and the lower punching movable die 5, and the needle extraction plate 73 is provided with a first limiting concave hole 76 and a second limiting concave hole 77 matching the head of the spring plunger 75. The working process and principle are as follows: the needle extraction plate 73 corresponding to the punching needle 7 needed for punching is fully inserted, and the head of the spring plunger 75 is embedded in the first limiting recessed hole 76 to position the needle extraction plate 73. At this time, the bottom of the needle extraction plate 73 presses on the bottom end of the punching needle 7, and the punching needle 7 is in an extended state. When the punching movable mold moves toward the punching fixed mold, the top of the punching needle 7 passes through the paper transmission channel 6 to punch a hole; when the needle is extracted, the needle extraction plate 73 corresponding to the punching needle 7 that is not needed for punching is pulled out, so that the bottom end of the punching needle 7 enters the needle extraction cavity 72, and then the needle extraction plate 73 is partially inserted, so that the head of the spring plunger 75 is embedded in the second limiting recessed hole 77. At this time, the step portion 74 at the bottom end of the punching needle 7 is stuck by the needle extraction plate 73, and the punching needle 7 is in a retracted state. When the punching movable mold moves toward the punching fixed mold, the top of the punching needle 7 at this place does not enter the paper transmission channel 6 and is in an inoperative state.

[0024] To sum up, the utility model is a double-mold booklet punching device, which can effectively solve the problems of complex structure, insufficient working stability, cumbersome needle extraction operation, etc. of the existing double-mold booklet punching device. It has high utilization value and use significance and can be widely promoted and applied.

[0025] The above is a preferred embodiment of the present invention. It should be pointed out that, for ordinary technicians in this technical field, several improvements and modifications can be made without departing from the principles of the present invention. These improvements and modifications should also be regarded as the protection scope of the present invention.

Claims

1. A double-mold booklet punching device, comprising a frame (1), characterized in that: A linear slide rail (11) is provided on the frame (1), and the linear slide rail (11) has a certain inclination angle. An upper punching movable mold (2), an upper punching fixed mold (3), a lower punching fixed mold (4) and a lower punching movable mold (5) are arranged in sequence from top to bottom along the linear slide rail (11) in a horizontal direction and perpendicular to the linear slide rail (11). The upper punching fixed mold (3) and the lower punching fixed mold (4) are fixedly arranged side by side on the frame (1). The upper punching fixed mold (3) and the lower punching fixed mold (4) are respectively provided with a paper transmission channel (6) with an opening facing upward in the length direction. The upper punching movable mold (2) and the upper punching fixed mold (3) are respectively provided with a paper transmission channel (6) with an opening facing upward in the length direction. A plurality of punching needles (7) are installed on the lower punching movable die (5) along the length direction, and the top ends of the punching needles (7) are respectively directed toward the upper punching fixed die (3) and the lower punching fixed die (4), and the upper punching fixed die (3) and the lower punching fixed die (4) are provided with through holes (71) matching the punching needles (7), and the through holes (71) are distributed along the paper transmission channel (6); the frame (1) is provided with a cam transmission mechanism (8), and the upper punching movable die (2) and the lower punching movable die (5) are driven by the cam transmission mechanism (8) to reciprocate in opposite directions along the linear slide rail (11).

2. A double-mold booklet punching device as claimed in claim 1, characterized in that: The cam transmission mechanism (8) comprises a transmission main shaft (81) parallel to the upper punching movable die (2) and the lower punching fixed die (4); both ends of the transmission main shaft (81) are provided with an outer eccentric cam (82) and an inner eccentric cam (83); the outer eccentric cam (82) is connected to an upper punching rocker arm (84); one end of the upper punching rocker arm (84) is sleeved on the outer edge of the outer eccentric cam (82), and the other end is respectively connected to the two ends of the upper punching movable die (2); the inner eccentric cam (83) is connected to a lower punching rocker arm (85); one end of the lower punching rocker arm (85) is sleeved on the outer edge of the inner eccentric cam (83), and the other end is respectively connected to the two ends of the lower punching movable die (5); a motor (12) is provided on the frame (1); and the transmission main shaft (81) is driven to rotate by the motor (12).

3. A double-mold booklet punching device as claimed in claim 2, characterized in that: The outer eccentric cam (82) and the inner eccentric cam (83) are respectively eccentrically sleeved on the transmission main shaft (81); the eccentric direction of the outer eccentric cam (82) is opposite to that of the inner eccentric cam (83); when the transmission main shaft (81) rotates, the outer eccentric cam (82) and the inner eccentric cam (83) respectively drive the upper punching rocker arm (84) and the lower punching rocker arm (85) to move synchronously in opposite directions, thereby driving the upper punching movable mold (2) and the lower punching movable mold (5) to move synchronously in opposite directions along the linear slide rail (11).

4. A double-mold booklet punching device as claimed in claim 3, characterized in that: An upper slider seat (13) and a lower slider seat (14) are movably provided along the linear slide rail (11); the upper punching movable die (2) is mounted on the upper slider seat (13); the lower punching movable die (5) is mounted on the lower slider seat (14); the upper punching rocker arm (84) is connected to both sides of the upper slider seat (13); and the lower punching rocker arm (85) is connected to both sides of the lower slider seat (14).

5. A double-mold booklet punching device as claimed in claim 4, characterized in that: A connecting bearing (86) is provided between the upper perforated rocker arm (84) and the upper slider seat (13), and between the lower perforated rocker arm (85) and the lower slider seat (14).

6. A double-mold booklet punching device as claimed in claim 1, characterized in that: The upper punching movable die (2) and the lower punching movable die (5) are provided with a needle extraction cavity (72) at the bottom end of each punching needle (7), a pluggable needle extraction plate (73) is provided perpendicular to the punching needle (7), and a step portion (74) is provided at the bottom end of the punching needle (7).

7. A double-mold booklet punching device as claimed in claim 6, characterized in that: A spring plunger (75) is provided on the upper punching movable die (2) and the lower punching movable die (5) vertically toward each of the needle withdrawal plates (73), and a first limiting recessed hole (76) and a second limiting recessed hole (77) matching the head of the spring plunger (75) are provided on the needle withdrawal plate (73).

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