阅读说明：本技术 一种打包装置 (Packing device ) 是由 覃勇 于 2021-07-16 设计创作，主要内容包括：本发明涉及打包机技术领域,特别涉及一种打包装置,包括机体,机体上设有操作台,操作台下方设置有机芯,操作台上方设置有立架,机芯包括机架和支撑架,支撑架为龙门结构,包括平行设置的第一支撑板和第二支撑板,机架上设置有进退带轮、收紧轮和收紧摇臂,收紧摇臂上固定连接有收紧板,收紧板与收紧轮相配合；第一支撑板和第二支撑板之间设置有凸轮机构,凸轮机构连接有左刀机构、中刀机构、右刀机构、烫头机构、下滑板机构和上滑板机构。收紧摇臂包括本体,本体两端分别固定连接有固定部和驱动部。本方案中固定部、驱动部和连接部的相对设置,优化了收紧摇臂的摆动轨迹,使得收紧摇臂和收紧轮的运行更平稳,并且避免与其他机构发生干涉。(The invention relates to the technical field of packing machines, in particular to a packing device, which comprises a machine body, wherein an operation table is arranged on the machine body, a machine core is arranged below the operation table, a vertical frame is arranged above the operation table, the machine core comprises a rack and a support frame, the support frame is of a gantry structure and comprises a first support plate and a second support plate which are arranged in parallel, an advancing and retreating belt wheel, a tightening wheel and a tightening rocker arm are arranged on the rack, the tightening rocker arm is fixedly connected with a tightening plate, and the tightening plate is matched with the tightening wheel; a cam mechanism is arranged between the first supporting plate and the second supporting plate and is connected with a left knife mechanism, a middle knife mechanism, a right knife mechanism, an ironing head mechanism, a lower sliding plate mechanism and an upper sliding plate mechanism. The tightening rocker arm comprises a body, and two ends of the body are respectively and fixedly connected with a fixing part and a driving part. The relative setting of fixed part, drive division and connecting portion has optimized the swing orbit of tightening up the rocking arm in this scheme for the operation of tightening up rocking arm and tightening wheel is more steady, and avoids taking place to interfere with other mechanisms.)

1. A packing device is characterized by comprising a machine body (106), wherein an operation table (101) is arranged on the machine body (106), a machine core (104) is arranged below the operation table (101), a vertical frame (102) is arranged above the operation table (101), the machine core (104) comprises a machine frame (1) and a supporting frame, the supporting frame is of a gantry structure and comprises a first supporting plate (21) and a second supporting plate (22) which are arranged in parallel, the machine frame (1) is of a plate-shaped structure and is fixed on the right side of the second supporting plate (22), a feeding and withdrawing belt wheel (82), a tightening wheel (81) and a tightening rocker arm (6) are arranged on the machine frame (1), a tightening plate (9) is fixedly connected to the tightening rocker arm (6), and the tightening plate (9) is matched with the tightening wheel (81); a cam mechanism is arranged between the first supporting plate (21) and the second supporting plate (22), and the cam mechanism is connected with a left knife mechanism, a middle knife mechanism, a right knife mechanism, a transmission mechanism, an ironing head mechanism and an upper and lower sliding plate mechanism;

tighten up the rocking arm and include body (65), body (65) both ends respectively fixedly connected with fixed part (61) and drive division (63), still be equipped with connecting portion (62) in the middle of body (65), fixed part (61) are the cylinder of fixed connection in body (65) side, the one end that body (65) and fixed part (61) are connected upwards buckles, drive division (63) are the diaphragm of fixed connection in body (65) side, set up respectively on fixed part (61) and the drive division (63) have fixed orifices (66) of horizontal direction and drive orifice (64) of vertical direction, connecting portion (62) are for seting up the circular through-hole of horizontal direction on body (65), all rotate in fixed orifices (66) and connecting portion (62) and be connected with the bearing.

2. The packaging device according to claim 1, wherein the first support plate (21) comprises an upper plate (211) and a lower plate (212), the upper plate (211) and the lower plate (212) are parallel, the upper end of the lower plate (212) is provided with a bend facing obliquely upward, the lower end of the upper plate (211) is fixedly connected to the upper portion of the bend, the left end and the right end of the upper plate (211) and the right end of the lower plate (212) are respectively provided with an inward recess (220), the upper end of the upper plate (211) and the upper end of the second support plate (22) are further provided with a conveying belt groove (219), one side of the lower plate (212) is provided with a first motor shaft hole (215), the lower plate (212) and the second support plate (22) are respectively provided with a first camshaft hole (213) with the same size, and the two first camshaft holes (213) are matched with each other.

3. The baling device according to claim 1, wherein the upper and lower sliding plate mechanism comprises a first rocker arm (31), a second rocker arm (32), an upper slide plate (33) and a lower slide plate (34), the upper end of the first rocker arm (31) and the upper end of the second rocker arm (32) are respectively and fixedly connected with the lower part of the upper slide plate (33) and the lower part of the lower slide plate (34), the first rocker arm (31) comprises a first connecting part (312) and an L-shaped first driving arm (311), the lower end of the first driving arm (311) is fixedly connected with the first connecting part (312), the upper part of the first driving arm (311) is bent to one side, the second rocker arm (32) comprises a second connecting part (322) and an L-shaped second driving arm (321), the lower end of the second driving arm (321) is fixedly connected with the second connecting part (322), the middle part of the second driving arm (321) is bent to one side, the lower part of the second driving arm (321) is provided with a transverse driving groove (324), a first connecting hole (313) and a second connecting hole (323) are respectively formed in the first connecting portion (312) and the second connecting portion (322), and the first connecting hole (313) and the second connecting hole (323) are matched with each other.

4. The baling device according to claim 1, wherein the cam mechanism comprises a cam shaft (41), a left knife cam (44), a middle knife cam (45) and a right knife cam (46) are coaxially and fixedly connected to the cam shaft (41) from left to right; an iron head cam (43) and a lower sliding plate cam (42) are further sequentially arranged on the left side of the left knife cam (44) along the direction far away from the left knife cam (44); an upper sliding plate cam (47) is further arranged on the right side of the right knife cam (44), and a tightening cam (48) is further arranged on the right side of the upper sliding plate cam (47).

5. The baling device according to claim 1, wherein the transmission mechanism comprises a motor (52) and a gear box (51), the gear box (51) is a box structure with an opening on the top surface, the bottom of the gear box (51) is provided with a second camshaft hole (511), a transmission shaft hole (512) and a second motor shaft hole (513), the outer side of the bottom of the gear box (51) is further provided with a first sinking platform (518), and the first sinking platform (518) and the second motor shaft hole (513) are coaxially arranged; the output end of the motor (52) is provided with a motor mounting surface (524), the motor mounting surface (524) is provided with a first boss (522), the first boss (522) is matched with the first sinking platform (518), and the output shaft of the motor (52) penetrates through the second motor shaft hole (513) and extends to the inner side of the bottom of the gear box (51); the transmission shaft hole (512) is sleeved with the transmission shaft (53), and the second cam shaft hole (511) is sleeved with the driving shaft; an output shaft of the motor (52) is sleeved with a motor gear, the transmission shaft (53) is sleeved with a first transmission gear (531) and a second transmission gear (532), the driving shaft is sleeved with a driving gear (54), the first transmission gear (531) is meshed with the motor gear, and the second transmission gear (532) is meshed with the driving gear (54).

Technical Field

The invention relates to the technical field of packing devices, in particular to a packing device.

Background

A strapping device is a machine that wraps a product or package with a strap and then tightens and joins the two ends by thermal effect or by using a material such as a button. The packing device has the functions of ensuring that the plastic belts can be tightly attached to the surfaces of the packed pieces to be bundled, ensuring that the packed pieces are not scattered due to infirm bundling in transportation and storage, and simultaneously ensuring neat and beautiful bundling. The cam mechanism of the packaging device drives the hot-gluing mechanism, the upper sliding plate, the lower sliding plate and the cutter to operate, so that series of operations such as product compression, bundling and strapping tape cutting are realized.

The packing device is provided with a tightening rocker arm mechanism for driving a tightening wheel to tighten a packing belt, the existing tightening rocker arm structure is large in size, and the existing tightening rocker arm structure is very easy to interfere with other structures or parts of the packing device during operation, so that the tightening wheel is unstable in rotation, normal operation of the tightening wheel is influenced, and further the whole operation of the packing device is influenced.

Disclosure of Invention

The invention aims to provide a packing device, which aims to improve the running stability of a tightening rocker arm structure and a tightening wheel, avoid the interference of the tightening rocker arm and other surrounding mechanisms and improve the running efficiency of the packing device.

The invention provides a packing device, which comprises a machine body, wherein an operation table is arranged on the machine body, a machine core is arranged below the operation table, a vertical frame is arranged above the operation table, the machine core comprises a frame and a support frame, the support frame is of a gantry structure and comprises a first support plate and a second support plate which are arranged in parallel, the frame is of a plate-shaped structure and is fixed on the right side of the second support plate, an advancing and retreating belt wheel, a tightening wheel and a tightening rocker arm are arranged on the frame, the tightening rocker arm is fixedly connected with a tightening plate, and the tightening plate is matched with the tightening wheel; a cam mechanism is arranged between the first supporting plate and the second supporting plate, and the cam mechanism is connected with a left knife mechanism, a middle knife mechanism, a right knife mechanism, an ironing head mechanism, a lower sliding plate mechanism and an upper sliding plate mechanism;

the tightening rocker arm comprises a body, the body is of a blocky structure, one end of the body is provided with a fixed part, the other end of the body is provided with a driving part, and a connecting part is also arranged in the middle of the body; the fixed part includes the cylinder of fixed connection in the body side, and the body upwards buckles for the body centre at the one end tip that is located the fixed part, and the drive division is the diaphragm of fixed connection in the body side, is provided with the fixed orifices of horizontal direction on the fixed part, sets up the drive hole of vertical direction on the drive division, and connecting portion are for seting up the circular through-hole of horizontal direction on the body, all rotate in fixed orifices and the connecting portion and be connected with the bearing.

In this application, the lower and upper slide mechanisms may also be referred to as upper and lower slide mechanisms.

The principle of the scheme is as follows: an operation table plane is arranged on the machine body, a machine core is fixedly connected in the machine body, and two ends of the vertical frame are respectively and fixedly connected to two sides of the operation table. The object to be packed is placed on the operation table for packing, and the operation table is provided with a belt inlet and a belt outlet. The packing belt in the machine core enters one end of the vertical frame from the belt outlet, is conveyed for a circle in the track of the vertical frame and enters the belt inlet from the other end of the vertical frame, and the upper part of the object to be packed is bundled. First delivery board, second delivery board and the equal fixed connection of third delivery board are in the frame, play the guide effect to the packing area of process. This scheme is carried out forward conveying and backward and is moved back the area through advancing and retreating band pulley, reachs upper and lower slide department behind the third delivery board, by tightening up the swing of rocking arm drive tightening plate, and the tightening plate promotes the packing area to first delivery board and second delivery board, and the tightening plate promotes to tighten up the wheel simultaneously and draws close to the direction of first delivery board and second delivery board, and the cooperation is tightened up the packing area. The motor transmission mechanism drives the cam mechanism to operate, and the cam mechanism drives the left knife, the middle knife, the right knife and the ironing head of the sliding plate driving mechanism to be matched for cutting and bundling the packing belt. The fixed part is rotationally connected with a fixed shaft on the packing device, the connecting part is coaxially and fixedly connected with the tightening wheel, and the driving part is fixedly connected with a cam mechanism for driving the tightening rocker arm to move. The fixing part and the driving part are fixedly connected to two ends of the body, and the connecting part is a circular through hole formed in the middle of the body. The fixing portion is used for fixing the tightening rocker arm and the packing device, the connecting portion is used for fixing the tightening rocker arm and the tightening wheel coaxially, and the packing device cam mechanism drives the driving portion to swing so as to drive the tightening wheel to rotate. The one end that body and fixed part are connected is upwards buckled for the structure of body more matches with packing apparatus inner structure. The fixing part, the driving part and the connecting part are arranged oppositely, so that the swing track of the tightening rocker arm is optimized. Fixed part and drive division all set up the side at the body, avoid interfering with other parts.

The scheme has the beneficial effects that: 1. the tightening plate is matched with the tightening wheel to tighten the packing belt, so that the friction force applied to the packing belt is reduced, and the packing belt is prevented from being broken when tightened.

2. The tightening plate pushes the packing belt and the tightening wheel to tighten the packing belt, and the tightening effect is better under the dual actions.

3. The fixed part, the driving part and the connecting part are arranged oppositely, so that the swing track of the tightening rocker arm is optimized, and the tightening rocker arm and the tightening wheel can run more stably.

4. The arrangement of the bearing enables the connection and the operation between the tightening rocker arm and the packing device to be more stable.

5. The fixed part and the driving part are arranged on the side face of the body of the tightening rocker arm, so that interference between the tightening rocker arm and other parts of the packaging device in operation is avoided. And the stress condition of the tightening rocker arm is optimized, and the operation efficiency of the tightening rocker arm is improved.

6. One end of the body connected with the fixing part of the tightening rocker arm is bent upwards, so that the structure of the body is matched with the internal structure of the packaging device, and the tightening rocker arm is prevented from interfering with the internal structure of the packaging device when in operation.

Drawings

Fig. 1 is a schematic structural diagram of a movement according to an embodiment of the present invention;

FIG. 2 is a schematic front view of an embodiment of the present invention;

FIG. 3 is a schematic top view of an embodiment of the present invention;

FIG. 4 is a schematic structural view of a tightening rocker arm according to an embodiment of the present invention;

fig. 5 is a schematic structural diagram of a first support plate according to an embodiment of the present invention;

FIG. 6 is a schematic diagram of a second supporting plate structure according to an embodiment of the present invention;

fig. 7 is a side view of a first support plate according to an embodiment of the present invention;

FIG. 8 is a schematic view of a first rocker arm configuration according to an embodiment of the invention;

FIG. 9 is a schematic illustration of a second swing arm in accordance with an embodiment of the present invention;

FIG. 10 is a schematic illustration of a second rocker arm of an embodiment of the invention;

FIG. 11 is a schematic structural view of a cam mechanism according to an embodiment of the present invention;

FIG. 12 is a schematic top view of a gearbox according to an embodiment of the present invention;

FIG. 13 is a perspective view of a gear box according to an embodiment of the present invention;

FIG. 14 is a schematic structural diagram of a motor according to an embodiment of the present invention;

fig. 15 is a schematic structural diagram of a transmission mechanism according to an embodiment of the invention.

Reference numerals: the device comprises a frame 1, a first support plate 21, a second support plate 22, an upper plate 211, a lower plate 212, a first camshaft hole 213, a first motor shaft hole 215, a transfer belt groove 219, a recess 220, a first rocker arm 31, a second rocker arm 32, an upper slide plate 33, a lower slide plate 34, a first drive arm 311, a first connecting part 312, a first connecting hole 313, a second drive arm 321, a second connecting part 322, a second connecting hole 323, a drive groove 324, a camshaft 41, a lower slide plate cam 42, a scalding cam 43, a left knife cam 44, a middle knife cam 45, a right knife cam 46, an upper slide plate cam 47, a take-up cam 48, a gear box 51, a second camshaft hole 511, a transmission shaft hole 512, a second motor shaft hole 513, a first sinking platform 518, a motor 52, a first boss 522, a motor mounting surface 524, a transmission shaft 53, a first transmission gear 531, a second transmission gear 532, a drive gear 54, a take-up rocker arm 6, a first transfer plate 71, a second motor shaft hole 215, a second connecting hole 323, a second connecting hole connecting groove connecting cam connecting with a left connecting hole connecting with the gear, a left connecting hole connecting with the gear, a left connecting hole connecting with the gear, a left connecting hole connecting the gear, a left connecting hole connecting the gear, a right knife cam, a left knife cam connecting the gear, a right knife cam connecting hole connecting the gear, a right knife cam connecting the gear, a right knife cam, a left knife cam, a right knife hole connecting the gear, a right knife hole connecting the gear, a right knife cam, a right knife hole connecting the gear, a right knife hole, a left knife hole connecting the gear, a right cam, a right knife hole, a right cam, a left knife hole connecting the gear, a left knife hole, a right cam, a left knife hole connecting the gear, a right cam, a left knife hole, a right cam, a left knife hole, a right cam, a gear, a right cam, The second conveying plate 72, the third conveying plate 73, the tightening wheel 81, the advancing and retreating pulley 82, the follower wheel 83, the tightening plate 9, the operation table 101, the stand 102, the tape reel 103, the movement 104, the tape storage box 105, the body 106, the fixing portion 61, the connecting portion 62, the driving portion 63, the driving hole 64, the body 65, and the fixing hole 66.

Detailed Description

The present invention will be further described with reference to the accompanying drawings and specific embodiments. The invention provides a packing device, which comprises a machine body 106, wherein an operation table 101 is arranged on the machine body 106, a machine core 104 is arranged below the operation table 101, a vertical frame 102 is arranged above the operation table 101, the machine core 104 comprises a machine frame 1 and a supporting frame, the supporting frame is of a gantry structure and comprises a first supporting plate 21 and a second supporting plate 22 which are arranged in parallel, the machine frame 1 is of a plate-shaped structure and is fixed on the right side of the second supporting plate 22, an advancing and retreating belt wheel 82, a tightening wheel 81 and a tightening rocker arm 6 are arranged on the machine frame 1, a tightening plate 9 is fixedly connected to the tightening rocker arm 6, and the tightening plate 9 is matched with the tightening wheel 81; a cam mechanism is arranged between the first supporting plate 21 and the second supporting plate 22 and is connected with a left knife mechanism, a middle knife mechanism, a right knife mechanism, a transmission mechanism, a head ironing mechanism and an upper and lower sliding plate mechanism;

tighten up the rocking arm and include body 65, body 65 both ends fixedly connected with fixed part 61 and drive division 63 respectively, still be equipped with connecting portion 62 in the middle of the body 65, fixed part 61 is the cylinder of fixed connection in body 65 side, the one end that body 65 and fixed part 61 are connected is upwards buckled, drive division 63 is the diaphragm of fixed connection in body 65 side, fixed part 61 and drive division 63 are last to set up the fixed orifices 66 of horizontal direction and the drive orifice 64 of vertical direction respectively, connecting portion 62 is for setting up the circular through-hole of horizontal direction on body 65, all rotate in fixed orifices 66 and the connecting portion 62 and be connected with the bearing.

In the specific implementation of the present invention, as shown in fig. 1, 2, 3 and 4, a plane of an operation table 101 is provided on a machine body 106, a movement 104 is fixedly connected in the machine body 106 below the operation table 101, and a stand 102 is fixedly connected to the operation table 101. An operation table 101 plane is arranged on the machine body 1, a machine core 104 is fixedly connected in the machine body 106, a vertical frame 102 is fixedly connected on the operation table 101, and the vertical frame 102 is in an N shape. The object to be packed is placed on the operation table 101 to be packed, and the operation table 101 is provided with a belt inlet and a belt outlet. The packing belt in the movement 104 enters one end of the stand 102 from the belt outlet, is conveyed for a circle in the track of the stand 102 and enters the belt inlet from the other end of the stand 102, and the upper part of the object to be packed is packed. The present embodiment performs forward feeding and backward feeding by the forward and backward feed pulleys 82. When the packing belt is tightened, the tightening rocker arm 6 drives the tightening plate 9 to swing, and the tightening plate 9 draws close to the packing belt and pushes the packing belt to play a certain tightening role. Meanwhile, the tightening plate 9 pushes the tightening wheel 81 to approach to the direction of the packing belt, the packing belt is tightened in a matching mode, and the tightening effect is better. The motor transmission mechanism drives the cam mechanism to operate, and the cam mechanism drives the left knife mechanism, the middle knife mechanism, the right knife mechanism, the head ironing mechanism, the transmission mechanism and the upper and lower sliding plate mechanisms to be matched for cutting and bundling the packing belt. The fixing part 61 is rotatably connected with a fixed shaft on the packing device, the connecting part 62 is coaxially and fixedly connected with a tightening wheel 81, and the driving part 63 is fixedly connected with a cam mechanism for driving the tightening rocker arm 6 to move. The fixing portion 61 and the driving portion 63 are fixedly connected to two ends of the body 65, and the connecting portion 62 is a circular through hole formed in the middle of the body 65. The fixing portion 61 fixes the tightening rocker arm 6 and the packaging device, the connecting portion 62 fixes the tightening rocker arm 6 and the tightening wheel 81 coaxially, and the cam mechanism of the packaging device drives the driving portion 63 to swing, so that the tightening wheel 81 is driven to rotate. The end of the body 65 connected with the fixing part 61 is bent upwards, so that the structure of the body 65 is more matched with the internal structure of the packaging device. The relative arrangement of the fixing portion 61, the driving portion 63 and the connecting portion 62 optimizes the swing locus of the take-up rocker 6. The fixing portion 61 and the driving portion 63 are both provided on the side surface of the body 65 to avoid interference with other components.

Further, as shown in fig. 5, 6 and 7, the first support plate 21 includes an upper plate 211 and a lower plate 212, the upper plate 211 and the lower plate 212 are parallel, the upper end of the lower plate 212 is provided with a bend facing obliquely upward, the lower end of the upper plate 211 is fixedly connected to the upper portion of the bend, the left and right ends of the upper plate 211 and the right end of the lower plate 212 are both provided with inward depressions 220, the upper end of the upper plate 211 and the upper end of the second support plate 22 are also provided with a conveying belt slot 219, one side of the lower plate 212 is provided with a motor shaft hole 215, the lower plate 212 and the second support plate 22 are both provided with first cam shaft holes 213 having the same size, and the two first cam shaft holes 213 are matched with each other. The support frame includes first backup pad 21 and second backup pad 22, and first backup pad 21 is opposite to second backup pad 22, and integrated into one piece is all pour through the mould to first backup pad 21 and second backup pad 22. A motor shaft hole 215 is formed in one side of the first support plate 21, which is far away from the second support plate 22, and the motor shaft hole 215 is a blind hole. The motor shaft hole 215 is rotatably connected with a motor shaft. The first support plate 21 includes an upper plate 211 and a lower plate 212, the upper plate 211 and the lower plate 212 are parallel, the upper end of the lower plate 212 is fixedly connected with a bend having an oblique upper direction, and the lower end of the upper plate 211 is fixedly connected with the upper portion of the bend. The lower plate 212 and the second support plate 22 are both provided with first camshaft holes 213 with the same size, the two transmission shafts 213 are both through holes, bearings are arranged in the first camshaft holes 213, the transmission shafts are rotatably connected in the two first camshaft holes 213, and the transmission shafts are coaxially connected with a plurality of cams. The conveyor belt passes through the conveyor belt slot 219, and the packing belt is conveyed on the conveyor belt, which supports the packing belt. The baler does not need to reserve more space for the conveyor belt because of the arrangement of the conveyor belt groove 219, so that the overall structure of the baler is compact. The first support plate 21 has a "z" shape, and the upper plate 211 and the lower plate 212 are provided at their ends with recesses 220 toward the middle of the plates. The design of the Z shape, the conveying belt groove 219 and the recess 220 avoids the interference of the first supporting plate 21 and the second supporting plate 22 with the nearby mechanisms, and the stable operation of the packaging machine is guaranteed. The overall size of the packing machine is reduced, the overall structure of the packing machine is prevented from being overstaffed, and the packing machine is convenient to use. The bottom of the first support plate 21 and the bottom of the second support plate 22 are both fixedly connected below the operation table 101 of the packaging machine device.

Further, as shown in fig. 8, 9 and 10, the up-down sliding plate mechanism includes a first rocker arm 31, a second rocker arm 32, an upper sliding plate 33 and a lower sliding plate 34, an upper end of the first rocker arm 31 and an upper end of the second rocker arm 32 are respectively fixedly connected with a lower portion of the upper sliding plate 33 and a lower portion of the lower sliding plate 34, the first rocker arm 31 includes a first connecting portion 312 and an "L" -shaped first driving arm 311, a lower end of the first driving arm 311 is fixedly connected with the first connecting portion 312, an upper portion of the first driving arm 311 is bent to one side, the second rocker arm 32 includes a second connecting portion 322 and an "L" -shaped second driving arm 321, a lower end of the second driving arm 321 is fixedly connected with the second connecting portion 322, a middle portion of the second driving arm 321 is bent to one side, a transverse driving groove 324 is formed at a lower portion of the second driving arm 321, a first connecting hole 313 and a second connecting hole 323 are respectively formed at the first connecting portion 312 and the second connecting portion 322, and the first coupling hole 313 and the second coupling hole 323 are fitted to each other. The first driving arm 311 and the first connecting portion 312, and the second driving arm 321 and the second connecting portion 322 are integrally formed by welding or die casting. The driving shaft is coaxially and fixedly connected with the first cam and the second cam. When the driving shaft rotates, the protrusion of the first cam contacts with the first rocker arm 31, and drives the first rocker arm 31 to swing, thereby driving the upper sliding plate 33 to move. The protrusion of the second cam contacts the driving groove 324 of the second rocker arm 32, causing the second rocker arm 32 to swing, thereby moving the lower slide plate 34. The contact area of the driving groove 324 and the second cam is larger, and the driving effect is better. The first coupling hole 313 and the second coupling hole 323 have the same size, and the coupling shaft passes through the first coupling hole 313 and the second coupling hole 323 to couple the first swing arm 31 and the second swing arm 32, thereby preventing the first swing arm 31 and the second swing arm 32 from swinging too much. The bending and L-shaped design of the first driving arm 311 and the second driving arm 321 avoids interference with other mechanisms, the interference of the first rocker arm 31 and the second rocker arm 32 is also avoided, the overall operation efficiency of the packaging machine is improved, the sizes of the first rocker arm 31 and the second rocker arm 32 are reduced, the space is saved, and the structure of the packaging machine is prevented from being too heavy.

Further, as shown in fig. 11, the cam mechanism includes a cam shaft 41, and a left knife cam 44, a middle knife cam 45, and a right knife cam 46 are coaxially and fixedly connected to the cam shaft 41 from left to right; an ironing head cam 43 and a lower sliding plate cam 42 are sequentially arranged on the left side of the left knife cam 44 along the direction far away from the left knife cam 44; an upper slide plate cam 47 is further provided to the right of the right blade cam 46, and a take-up cam 48 is further provided to the right of the upper slide plate cam 47. According to the operation sequence of each part of the packaging machine, a left knife cam 44, a middle knife cam 45 and a right knife cam 46 corresponding to the left knife mechanism, the middle knife mechanism and the right knife mechanism are arranged in the middle on a cam shaft 41, and then cam pieces corresponding to the upper sliding plate and the lower sliding plate are arranged at two ends; the ironing head cam 43 corresponding to the ironing mechanism is provided between the lower slide plate cam 42 and the left blade cam 44 in this application. Besides the upper slide plate cam 47 and the lower slide plate cam 42, a driving cam piece for arranging other mechanisms is arranged, and a tightening cam 48 is arranged at the right side of the upper slide plate cam 47 in the application, and the tightening mechanism is driven to act through the tightening cam 48. In the scheme, all the cam pieces are fixedly connected with the shaft shoulders 412, and the shaft shoulders 412 on the cam pieces are tightly attached to other adjacent cam pieces. The camshaft 41 is rotatably connected in a support frame which comprises a first support plate and a second support plate, all cam pieces except the tightening cam 48 are arranged between the first support plate and the second support plate, and the tightening cam 48 is arranged on the right side of the second support plate, so that the tightening cam 58 is connected with the tightening rocker arm. The structure of each cam piece in this application is compact to make the mechanism that corresponds with each cam piece arrange compactly, reduce the whole volume of baling press.

Further, as shown in fig. 12, 13, 14 and 15, the transmission mechanism includes a motor 52 and a gear box 51, the gear box 51 is a box structure with an opening on the top surface, the bottom of the gear box 51 is provided with a second camshaft hole 511, a transmission shaft hole 512 and a motor shaft hole 513, the outer side of the bottom of the gear box 51 is further provided with a first sinking platform 518, and the first sinking platform 518 is coaxially arranged with the motor shaft hole 513; the output end of the motor 52 is provided with a motor mounting surface 524, the motor mounting surface 524 is provided with a first boss 522, the first boss 522 is matched with the first sinking platform 518, and the output shaft of the motor 52 penetrates through the motor shaft hole 513 and extends to the inner side of the bottom of the gear box 51; the transmission shaft hole 512 is sleeved with the transmission shaft 53, and the second cam shaft hole 511 is sleeved with the driving shaft; the output shaft of the motor 52 is sleeved with a motor gear, the transmission shaft 53 is sleeved with a first transmission gear 531 and a second transmission gear 532, the driving shaft is sleeved with a driving gear 54, the first transmission gear 531 is meshed with the motor gear, and the second transmission gear 532 is meshed with the driving gear 54. The output end of the motor 52 is provided with a motor shaft, a motor gear is coaxially and fixedly connected to the motor shaft, a driving shaft is rotatably connected to the second cam shaft hole 511, a driving gear 54 is coaxially and fixedly connected to the driving shaft, the motor shaft penetrates into the motor shaft hole 513, a transmission shaft 53 is rotatably connected to the transmission shaft hole 512, and a first transmission gear 531 and a second transmission gear 532 are coaxially and fixedly connected to the transmission shaft 53. The motor gear is engaged with the first transmission gear 531 on the transmission shaft 53, the motor 52 drives the transmission shaft 53 to rotate, and the second transmission gear 532 on the transmission shaft 53 rotates accordingly. As the second transfer gear 532 meshes with the drive gear 54, the second transfer gear 532 rotates the drive gear 54, thereby rotating the drive shaft and causing the cam mechanism to operate. The above arrangement leaves the mounting location of the motor 52 and transmission free, thereby allowing the arrangement of the transmission and other mechanisms of the baler. A first sinking platform 518 is further arranged on the outer side of the bottom of the gear box 51, and the first sinking platform 518 is coaxially arranged with the motor shaft hole 513; the output end of the motor 52 is provided with a motor mounting surface 524, and the motor mounting surface 524 is provided with a first boss 522. The first sinking platform 518 is an annular recess of the outer bottom of the gear box 51 toward the inside of the gear box 51, the first boss 522 is an annular projection of the output end of the motor 52, and the first sinking platform 518 and the first boss 522 have the same size, and the motor 52 and the gear box 51 are connected together by fitting the first boss 522 into the first sinking platform 518. The second cam-shaft hole 511 and the motor-shaft hole 513 are through holes, and the transmission-shaft hole 512 is a blind hole opened at the bottom in the gear case 51.

Further, as shown in fig. 1 and 2, the tape reel 103 is fixedly connected to a side surface of the body 106, and the tape storage box 105 is fixedly connected below the deck 104. A packing belt is wound on the belt reel 103 for use by the packing device. A part of idle packing belts are stored in the belt storage box 105, so that the situation that the number of the idle packing belts is too large and the idle packing belts are wound together to influence the normal operation of the packing device is avoided.