Welding mechanism of packing machine

Abstract

The utility model discloses a welding mechanism of a packing machine, which comprises a driving assembly and a welding assembly, the driving assembly comprises a welding positioning seat, a first driving source, a first eccentric shaft and an elastic piece, the welding positioning seat is movably connected with a welding seat, the first driving source is matched with the first eccentric shaft to drive the elastic piece to act, and the elastic piece drives the welding positioning seat to move relative to a welding frame; the welding assembly comprises a second driving source and a second eccentric shaft, the second driving source is matched with the second eccentric shaft, and the second eccentric shaft drives the welding seat to move; the friction assembly comprises a bottom die fixed on the welding frame and an upper toothed plate fixed on the welding seat; in the first state, the first driving source drives the upper toothed plate to move in the first direction; in the second state, the second driving source drives the upper toothed plate to reciprocate in the second direction; when the first driving source acts, the first eccentric shaft extrudes the elastic piece to enable the elastic piece to act, the elastic piece drives the welding positioning seat to move, the effect of flexible connection is achieved, and excessive force is prevented from acting on the upper toothed plate.

Description

Technical Field

[0001] The utility model relates to the technical field of processing equipment, and particularly relates to a welding mechanism of a strapping machine. Background Art

[0002] During the transportation and transfer of goods, the most common way is to bundle scattered goods into a whole by a strapping band to prevent the goods from scattering and being damaged. The welding mechanism of the strapping machine is widely applicable to carton strapping, industrial strapping, and daily necessities strapping due to its advantages of high packaging efficiency and stable tightening force.

[0003] The existing welding mechanism of the strapping machine, specifically referring to the welding mechanism of the friction welding type strapping machine, for example, the Chinese utility model patent with the publication number of "CN210258943U" and the patent name of "A Welding Component of a Welding Mechanism of a Strapping Machine and the Welding Mechanism of the Strapping Machine", discloses that during the friction process, through two biasing members, one biasing member is used to provide a return effect, and the other biasing member is used for compensation during friction welding. By the cooperation of the driving source, the vibration component, and the two biasing members, two effects of downward pressing and offset friction are formed. However, the driving source adopts a side pressing method, resulting in low accuracy of the applied pressure and affecting the welding efficiency. Summary of the Utility Model

[0004] Therefore, the technical problem to be solved by the utility model is how to improve the efficiency. For this purpose, a welding mechanism of a strapping machine includes:

[0005] A driving component, the driving component includes a welding positioning seat, a first driving source, a first eccentric shaft, and an elastic member. The welding positioning seat is movably connected to the welding seat. The first driving source cooperates with the first eccentric shaft to drive the elastic member to act, and the elastic member drives the welding positioning seat to move relative to the welding frame.

[0006] A welding component, the welding component includes a second driving source and a second eccentric shaft. The second driving source cooperates with the second eccentric shaft, and the second eccentric shaft drives the welding seat to move.

[0007] A friction component, the friction component includes a bottom die fixed on the welding frame and an upper tooth plate fixed on the welding seat.

[0008] In the first state, the first driving source drives the upper tooth plate to move along the first direction.

[0009] In the second state, the second driving source drives the upper tooth plate to reciprocate along the second direction.

[0010] The welding positioning seat is provided with a first chamber and a second chamber. A fixing member is provided at the connection between the first chamber and the second chamber. The elastic member is accommodated in the first chamber. One end of the elastic member abuts against the first eccentric shaft, and the other end of the elastic member abuts against the fixing member. The second chamber is movably connected to the welding seat.

[0011] The driving assembly further includes a driving member. The driving member is accommodated in the first chamber. The elastic member is sleeved on the driving member. One end of the driving member abuts against the first eccentric shaft.

[0012] The first driving source and the first eccentric shaft are in gear transmission or belt pulley transmission.

[0013] The first driving source is provided with a first gear. The first eccentric shaft is sleeved with a pressing gear. The first gear meshes with the pressing gear. The welding frame is fixed with a limit pin. The limit pin is located on the movement track of the pressing gear.

[0014] The first driving source is horizontally arranged.

[0015] The pressing gear is provided with a limit groove. The limit pin is located on the movement track of the limit groove.

[0016] The first eccentric shaft is sleeved with a first bearing, a second bearing and a pressing bearing. The first bearing and the second bearing are respectively matched with the side walls of the first chamber. The pressing bearing abuts against the elastic member.

[0017] The welding frame is provided with a receiving cavity. The welding positioning seat is accommodated in the receiving cavity and the welding positioning seat moves relative to the welding frame. A third bearing is provided between the welding positioning seat and the inner wall of the receiving cavity.

[0018] The second eccentric shaft is sleeved with a driving bearing. The welding seat is provided with a driving groove. The driving groove is located on the movement track of the driving bearing.

[0019] The second driving source and the second eccentric shaft are in gear transmission or belt pulley transmission.

[0020] The second driving source is fixedly connected to the welding frame.

[0021] The first driving source and the second driving source are cylinders or oil cylinders or motors.

[0022] The technical solution of the present utility model has the following advantages:

[0023] 1. The welding mechanism of a strapping machine provided by the present utility model adopts such a structure that when the first driving source operates, the elastic member is extruded by the first eccentric shaft, causing the elastic member to act. The elastic member drives the welding positioning seat to move, achieving a soft connection effect, preventing excessive force from acting on the upper tooth plate, and at the same time, separating the welding assembly and the driving assembly to better achieve the welding quality.

[0024] 2. The welding mechanism of a strapping machine provided by the present utility model forms a fixing effect for the elastic member through the first chamber, and then drives the entire welding positioning seat to move through the cooperation of the elastic member and the first eccentric shaft, thereby achieving a driving effect.

[0025] 3. The welding mechanism of a strapping machine provided by the present utility model is provided with a limit pin to form a limiting effect and control the pressing angle of the first eccentric shaft to meet the pressing requirement.

[0026] 4. The welding mechanism of a strapping machine provided by the present utility model is horizontally arranged. Compared with the vertical arrangement, a lot of space can be saved in the horizontal direction, making the volume of the entire device smaller.

[0027] 5. The welding mechanism of a strapping machine provided by the present utility model has the cooperation between multiple bearings, making the rotation of the first eccentric shaft smoother.

[0028] 6. The welding mechanism of a strapping machine provided by the present utility model is provided with a third bearing to better achieve the sliding effect of the welding positioning seat without hard friction.

[0029] 7. The welding mechanism of a strapping machine provided by the present utility model has the cooperation between the driving groove and the driving bearing to form a reciprocating motion effect.

[0030] 8. The welding mechanism of a strapping machine provided by the present utility model has the cooperation between the second driving source and the welding frame to better achieve the fixing effect of the second driving source. BRIEF DESCRIPTION OF THE DRAWINGS

[0031] In order to more clearly illustrate the specific embodiments of the present utility model or the technical solutions in the prior art, the following will briefly introduce the drawings required for use in the description of the specific embodiments or the prior art. Obviously, the following drawings are some embodiments of the present utility model. For those of ordinary skill in the art, other drawings can be obtained based on these drawings without creative efforts.

[0032] Figure 1 is a schematic structural diagram of the welding mechanism of a strapping machine provided by the present utility model;

[0033] Figure 2 is a cross-sectional view of the welding mechanism of a strapping machine provided by the present utility model;

[0034] Figure 3 Cross-sectional view of a welding mechanism of a strapping machine provided by the present utility model;

[0035] Figure 4 Cross-sectional view of a welding mechanism of a strapping machine provided by the present utility model;

[0036] Figure 5 Rear view of a welding mechanism of a strapping machine provided by the present utility model;

[0037] Figure 6 Exploded view of a welding mechanism of a strapping machine provided by the present utility model;

[0038] Figure 7 Partial cross-sectional view of a welding mechanism of a strapping machine provided by the present utility model.

[0039] Explanation of reference numerals:

[0040] 11, welding frame; 12, bottom die; 13, welding seat; 14, upper tooth plate; 15, welding positioning seat; 16, first driving source; 17, first eccentric shaft; 18, elastic member; 19, second driving source; 20, second eccentric shaft; 21, fixing member; 22, third bearing; 23, driving member; 111, accommodation cavity; 112, limit pin; 131, driving groove; 151, first chamber; 152, second chamber; 161, first gear; 171, pressing gear; 172, first bearing; 173, second bearing; 174, pressing bearing; 201, driving bearing; 202, positioning bearing; 1711, limit groove. Detailed implementation manners

[0041] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are some, but not all, of the embodiments of the present utility model. All other embodiments obtained by those of ordinary skill in the art without creative efforts based on the embodiments in the present utility model fall within the protection scope of the present utility model.

[0042] In the description of the present utility model, it should be noted that the orientation or positional relationship indicated by the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc. is based on the orientation or positional relationship shown in the accompanying drawings, and is only for the convenience of describing the present utility model and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be construed as a limitation to the present utility model. In addition, the terms "first", "second", "third" are only used for descriptive purposes and cannot be construed as indicating or implying relative importance.

[0043] In the description of the present utility model, it should be noted that unless otherwise clearly specified and defined, the terms "installation", "connection", and "linkage" should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium, and it can be the communication inside two components. For those of ordinary skill in the art, the specific meanings of the above terms in the present utility model can be understood according to specific situations.

[0044] In addition, the technical features involved in different embodiments of the present utility model described below can be combined with each other as long as they do not conflict with each other.

[0045] Embodiment 1

[0046] This embodiment provides a welding mechanism for a strapping machine, as shown in the appendix Figure 1-7 and includes:

[0047] A driving component, which includes a welding positioning seat 15, a first driving source 16, a first eccentric shaft 17, and an elastic member 18. The welding positioning seat 15 is movably connected to the welding seat 13. The movable connection can be a rotating shaft connection or a sliding rail connection. Simply put, when the welding positioning seat 15 moves, it can drive the welding seat 13 to move. When the welding positioning seat 15 is fixed, the other components can also drive the welding seat 13 to move. The first driving source 16 cooperates with the first eccentric shaft 17 to drive the elastic member 18 to act. Here, the first driving source 16 drives the first eccentric shaft 17 to rotate. When the first eccentric shaft 17 rotates, it will drive the elastic member 18 to act, and the elastic member 18 drives the welding positioning seat 15 to move relative to the welding frame 11.

[0048] A welding component, which includes a second driving source 19 and a second eccentric shaft 20. The second driving source 19 cooperates with the second eccentric shaft 20, and the second eccentric shaft 20 drives the welding seat 13 to move.

[0049] A friction component, which includes a bottom die 12 fixed on the welding frame 11 and an upper tooth plate 14 fixed on the welding seat 13. The overlapping area of the strapping is located between the bottom die 12 and the upper tooth plate 14. Through the action of the welding mechanism, the upper and lower parts of the strapping are welded together to form a fixing effect. Here, the structures of the bottom die 12 and the upper tooth plate 14 are prior art, so no further description will be given. The welding frame 11 is an important component for fixing the entire mechanism on the operation surface of the strapping machine, and the welding frame 11 is fixed. The welding seat 13 is linked with the upper tooth plate 14. Here, the welding seat 13 and the upper tooth plate 14 can be integrally formed, or the welding seat 13 can be separately provided from the upper tooth plate 14. In this embodiment, the upper tooth plate 14 and the welding seat 13 are detachably connected, specifically by bolt connection.

[0050] In the first state, the first driving source 16 drives the upper toothed plate 14 to move along the first direction, where the first direction is specifically the Z-axis direction, and the upper toothed plate 14 can move vertically up and down along the Z-axis direction. The first state specifically refers to driving the upper toothed plate 14 towards the bottom die 12 to achieve the clamping and matching effect between the two.

[0051] In the second state, the second driving source 19 drives the upper toothed plate 14 to reciprocate along the second direction. The second direction is the horizontal direction, which can be the X-axis direction or the Y-axis direction. Those skilled in the art can adjust the corresponding positional relationship according to actual needs.

[0052] With this structure, when the first driving source 16 operates, the first eccentric shaft 17 squeezes the elastic member 18, causing the elastic member 18 to act. The elastic member 18 drives the welding positioning seat 15 to move, achieving a soft connection effect, preventing excessive force from acting on the upper toothed plate 14, improving the welding quality, and at the same time separating the welding assembly and the driving assembly to better achieve the welding quality.

[0053] Specifically, as shown in the appendix Figure 1-6 As shown, the welding positioning seat 15 is provided with a first chamber 151 and a second chamber 152. A fixing member is provided at the connection between the first chamber 151 and the second chamber 152. That is, the first chamber 151 forms an effect of a lower opening, and the fixing member 21 forms a plug for the lower opening. The fixing member 21 can be a screw. The elastic member 18 is accommodated in the first chamber 151, and the elastic member 18 is installed in a downward manner, that is, the elastic member 18 is inserted into the first chamber 151 through the lower opening, and then a plugging effect is formed by the fixing member 21. There is a side opening above the first chamber 151, and the side opening is used to cooperate with the first eccentric shaft 17. The first eccentric shaft 17 horizontally penetrates the first chamber 151. One end of the elastic member 18 located in the first chamber 151 abuts against the first eccentric shaft 17, and the other end abuts against the fixing member 21. In this embodiment, the upper end of the elastic member 18 abuts against the first eccentric shaft 17, and the lower end of the elastic member 18 abuts against the fixing member 21. Here, the elastic member 18 can be a straight spring or a conical spring. The second chamber 152 is movably connected to the welding seat 13, and the second chamber 152 cooperates with the welding seat 13. By forming the fixing effect of the elastic member 18 through the first chamber 151, and then driving the entire welding positioning seat 15 to move through the cooperation between the elastic member 18 and the first eccentric shaft 17, a driving effect is achieved. In addition, part of the elastic member 18 can also be exposed outside without a chamber structure, that is, the top surface of the welding positioning seat 15 directly abuts against the elastic member 18.

[0054] Specifically, as shown in the appendix Figure 1-6As shown, the driving assembly further includes a driving member 23. The driving member 23 is received in the first chamber 151. The elastic member 18 is sleeved on the driving member 23. One end of the driving member 23 abuts against the first eccentric shaft 17. Here, the driving member 23 specifically abuts and cooperates with the downward pressure bearing 174. In this embodiment, the driving member 23 can be a bolt structure.

[0055] Specifically, between the welding seat 13 and the second chamber 152, there is a movable connection formed by the cooperation of steel balls and semi-circular grooves, or a movable connection can also be formed through a steel ball cage. The other end of the welding seat 13 is used to cooperate with the welding assembly.

[0056] Specifically, the first driving source 16 and the first eccentric shaft 17 are in a gear transmission or a belt pulley transmission. The gear transmission can be a gear set or the cooperation between two gears. The belt pulley transmission forms a transmission effect through a belt. Here, the transmission method can be adjusted according to actual needs. In addition, it should be noted that the first driving source 16 is fixedly connected to the welding frame 11. Here, the fixing method is bolt fixing.

[0057] Specifically, as shown in the appendix Figure 6-7 As shown, the first driving source 16 is provided with a first gear 161. The first eccentric shaft 17 is sleeved with a downward pressure gear 171. The first gear 161 meshes with the downward pressure gear 171. Here, the downward pressure gear 171 is located outside the first chamber 151, that is, the part of the first eccentric shaft 17 extending out of the first chamber 151 cooperates with the downward pressure gear 171 to form a linkage effect. The welding frame 11 is fixedly provided with a limit pin 112. The limit pin 112 is located on the movement track of the downward pressure gear 171. The setting of the limit pin 112 forms a limiting effect to control the downward pressure angle of the first eccentric shaft 17 to meet the downward pressure requirement. In this embodiment, the downward pressure gear 171 can be an incomplete gear, and the limit pin 112 cooperates with the toothless area of the downward pressure gear 171; or the downward pressure gear 171 is provided with a limit groove 1711. The limit groove 1711 and the teeth are on different planes, and the limit pin 112 cooperates with the limit groove 1711 to form a limiting effect. In addition, other limiting methods can also be used to form a limit. For example, the downward pressure gear 171 has an arc groove, and the limit pin 112 slides in the arc groove.

[0058] Specifically, the first driving source 16 is horizontally arranged. Here, the horizontal direction can be the X-axis direction or the Y-axis direction. Horizontally arranging, compared with vertically arranging, can save a lot of space in the horizontal direction, making the volume of the entire device smaller. In this embodiment, the first driving source 16 is in the Y-axis direction. The orientation of the first driving source 16 is opposite to the orientation of the second driving source 19. The first driving source 16 faces the rear side, and the second driving source 19 faces the front side.

[0059] Specifically, as shown in the appendix Figure 1-6As shown, a first eccentric shaft 17 is sleeved with a first bearing 172, a second bearing 173, and a lower pressing bearing 174. The lower pressing bearing 174 is located between the first bearing 172 and the second bearing 173. The first bearing 172 and the second bearing 173 are respectively fitted with the side walls of the first chamber 151. Here, the first bearing 172 and the second bearing 173 are specifically fitted with the side openings of the first chamber 151. The lower pressing bearing 174 abuts against the driving member 23 to drive the elastic member 18 to act. The cooperation between multiple bearings makes the rotation of the first eccentric shaft 17 smoother. When the first eccentric shaft 17 rotates, the lower pressing bearing 174 abuts against the driving member 23 to drive the elastic member 18 to press downwards.

[0060] Specifically, as shown in the appendix Figure 1-4 As shown, the welding frame 11 is provided with a receiving cavity 111. Here, the receiving cavity 111 is specifically located at the part where the welding frame 11 cooperates with the welding positioning seat 15. The receiving cavity 111 has openings at both the top and the bottom. The welding positioning seat 15 is received in the receiving cavity 111 and the welding positioning seat 15 moves relative to the welding frame 11. A third bearing 22 is provided between the welding positioning seat 15 and the inner wall of the receiving cavity 111. The setting of the third bearing 22 better realizes the sliding effect of the welding positioning seat 15 and no hard friction will occur.

[0061] Specifically, as shown in the appendix Figure 1-4 As shown, the second eccentric shaft 20 is sleeved with a driving bearing 201. The welding seat 13 is provided with a driving groove 131. The driving groove 131 is located on the movement track of the driving bearing 201. The driving groove 131 cooperates with the driving bearing 201 to form a reciprocating movement effect. The driving groove 131 is a U-shaped groove or an arc-shaped groove. It should be ensured that when the driving bearing 201 rotates, it can drive the welding seat 13 to make a reciprocating movement. Here, the number of the driving bearings 201 can be one, or a combination of two, or a combination of three.

[0062] Specifically, as shown in the appendix Figure 1-4 As shown, the second eccentric shaft 20 is also sleeved with two positioning bearings 202. The outer sides of the two positioning bearings 202 are fitted with the welding frame 11, making the rotation of the second eccentric shaft 20 better realized.

[0063] Specifically, the second driving source 19 and the second eccentric shaft 20 are in a gear transmission or a pulley transmission. Between the second driving source 19 and the second eccentric shaft 20, it can be a gear set transmission, or two gears can be matched, or a transmission effect can be formed through a belt. Those skilled in the art can adjust according to actual needs.

[0064] Specifically, the second driving source 19 is fixedly connected to the welding frame 11. The cooperation between the second driving source 19 and the welding frame 11 better realizes the fixing effect of the second driving source 19.

[0065] Specifically, the first driving source 16 and the second driving source 19 are cylinders or oil cylinders or motors.

[0066] Specifically, compared with the manual operation method, the first driving source 16 and the second driving source 19 can achieve automated operation and improve the packing efficiency.

[0067] Obviously, the above embodiments are only examples for clear illustration and are not limitations on the implementation manners. For those of ordinary skill in the art, other different forms of changes or modifications can be made based on the above description. It is not necessary and impossible to enumerate all the implementation manners here. And the obvious changes or modifications derived therefrom are still within the protection scope of the present invention.

Claims

1. The welding mechanism of a packing machine, characterized in that Including: A driving component, the driving component includes a welding positioning seat (15), a first driving source (16), a first eccentric shaft (17), and an elastic member (18). The welding positioning seat (15) is movably connected to the welding seat (13). The first driving source (16) cooperates with the first eccentric shaft (17) to drive the elastic member (18) to act, and the elastic member (18) drives the welding positioning seat (15) to move relative to the welding frame (11); A welding component, the welding component includes a second driving source (19) and a second eccentric shaft (20). The second driving source (19) cooperates with the second eccentric shaft (20), and the second eccentric shaft (20) drives the welding seat (13) to move; A friction component, the friction component includes a bottom die (12) fixed to the welding frame (11) and an upper tooth plate (14) fixed to the welding seat (13); In the first state, the first driving source (16) drives the upper tooth plate (14) to move along a first direction; In the second state, the second driving source (19) drives the upper tooth plate (14) to reciprocate along a second direction.

2. The welding mechanism of the bundling machine according to claim 1, characterized in that, The welding positioning seat (15) is provided with a first chamber (151) and a second chamber (152). A fixing member (21) is provided at the connection between the first chamber (151) and the second chamber (152). The elastic member (18) is accommodated in the first chamber (151). One end of the elastic member (18) abuts against the first eccentric shaft (17), and the other end of the elastic member (18) abuts against the fixing member (21); the second chamber (152) is movably connected to the welding seat (13).

3. The welding mechanism of the packing machine according to claim 2, characterized in that, The driving component further includes a driving member (23). The driving member (23) is accommodated in the first chamber (151). The elastic member (18) is sleeved on the driving member (23), and one end of the driving member (23) abuts against the first eccentric shaft (17).

4. The welding mechanism of the packing machine according to claim 1, characterized in that, The first driving source (16) and the first eccentric shaft (17) are in gear transmission or belt pulley transmission.

5. The welding mechanism of the packaging machine according to claim 4, characterized in that, The first driving source (16) is provided with a first gear (161). The first eccentric shaft (17) is sleeved with a pressing-down gear (171). The first gear (161) meshes with the pressing-down gear (171). The welding frame (11) is fixed with a limit pin (112), and the limit pin (112) is located on the movement track of the pressing-down gear (171).

6. The welding mechanism of the packing machine according to claim 5, characterized in that, The pressing-down gear (171) is provided with a limit groove (1711), and the limit pin (112) is located on the movement track of the limit groove (1711).

7. The welding mechanism of the packing machine according to claim 2, characterized in that, The first eccentric shaft (17) is sleeved with a first bearing (172), a second bearing (173), and a pressing-down bearing (174). The first bearing (172) and the second bearing (173) respectively cooperate with the side walls of the first chamber (151), and the pressing-down bearing (174) abuts against the elastic member (18).

8. The welding mechanism of the bundling machine according to claim 1, characterized in that, The welding frame (11) is provided with a receiving cavity (111). The welding positioning seat (15) is accommodated in the receiving cavity (111) and the welding positioning seat (15) moves relative to the welding frame (11). A third bearing (22) is provided between the welding positioning seat (15) and the inner wall of the receiving cavity (111).

9. The welding mechanism of the packing machine according to claim 1, characterized in that The second eccentric shaft (20) is sleeved with a driving bearing (201). The welding seat (13) is provided with a driving groove (131). The driving groove (131) is located on the movement track of the driving bearing (201).

10. The welding mechanism of the packing machine according to claim 1, characterized in that, The first driving source (16) and the second driving source (19) are cylinders or oil cylinders or motors.

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