End cam feeding mechanism

Abstract

The utility model discloses an end face cam feeding mechanism, and relates to the technical field of powder processing auxiliary devices. The material pushing track is mounted on the base; the material pushing plate is mounted on the material pushing track; the first tension spring column is mounted on the base; the second tension spring column is mounted at the tail end of the material pushing plate, and the second tension spring column is located on the outer side of the material pushing rail; the first tension spring is horizontally arranged, and the two ends of the first tension spring are connected with the first tension spring column and the second tension spring column correspondingly; and the cam stirring assembly is installed on the base, the bottom of the cam stirring assembly is matched with the material pushing rail, and the cam stirring assembly pushes the material pushing plate to move along the material pushing rail. The technical problems that an existing conveying mechanism is complex in structure, high in cost and incapable of achieving high-frequency conveying with the same beat as upward pressing are solved.

Description

Technical Field

[0001] The utility model relates to the technical field of powder material processing auxiliary devices, in particular to an end face cam feeding mechanism. Background Art

[0002] The forming of powder metallurgy products refers to placing a metal powder mixture in a middle mold cavity, applying pressure to the powder through an upper punch die and a lower punch die to compress it into shape, then removing the pressure and removing it from the middle mold cavity. After sintering and subsequent shaping processes, it is processed into a product that meets the design requirements.

[0003] After the product processing is completed, it needs to be photographed, shaped or quality inspected. Therefore, the product needs to be intermittently transported, such as by pushing the material through a pushing device to make it reach the corresponding processing station. However, the existing pushing device has a complex structure and high cost, and cannot complete high-frequency transportation with the same stable rhythm as the upper pressure. Utility Model Content

[0004] The utility model aims to provide an end face cam feeding mechanism, which solves the technical problems of the prior art conveying mechanism having a complex structure, high cost and being unable to realize high frequency conveying with the same beat as the upper pressure.

[0005] The embodiment of the present application discloses an end face cam feeding mechanism, comprising:

[0006] Base;

[0007] A material pushing track, installed on the base;

[0008] A push plate, mounted on the push track;

[0009] A first tension spring column is installed on the base;

[0010] A second tension spring column is installed at the end of the push plate, and the second tension spring column is located outside the push track;

[0011] A first tension spring is arranged horizontally, and two ends of the first tension spring are respectively connected to the first tension spring column and the second tension spring column;

[0012] A cam shifting assembly is installed on the base, and the bottom of the cam shifting assembly cooperates with the pushing track. The cam shifting assembly pushes the pushing plate to move along the pushing track.

[0013] The present application is to utilize a tension spring and a cam toggle assembly to stably complete the stable transportation of materials.

[0014] Based on the above technical solution, the embodiment of the present application can also be improved as follows:

[0015] Furthermore, the push plate is an L-shaped plate, and the vertical section of the push plate is located outside the base;

[0016] The second tension spring column is installed in the vertical section of the push plate. The beneficial effect of adopting this step is that the specific structure of the push plate can ensure that the first tension spring is in a horizontal position, thereby ensuring the stability of the movement.

[0017] Furthermore, a toggle seat is installed on the push plate;

[0018] The cam shifting assembly comprises:

[0019] A bracket, mounted on the base;

[0020] A driving unit, mounted on the bracket;

[0021] The cam unit is movably mounted on the bracket, the top of the cam unit cooperates with the output end of the drive unit, and the bottom of the cam unit cooperates with the toggle seat. The beneficial effect of adopting this step is that the cam unit and the drive unit cooperate with each other and use swinging to complete the feeding of the material.

[0022] Furthermore, the toggle seat is composed of two baffles arranged at intervals;

[0023] The cam unit includes a lower driving wheel, and the lower driving wheel is arranged between the two baffles. The beneficial effect of adopting this step is that the lower driving wheel and the baffle cooperate with each other to complete the pushing of the push plate, thereby realizing feeding.

[0024] Furthermore, the driving unit comprises:

[0025] A driving motor is installed on the top of the bracket, and the output end of the driving motor is arranged horizontally;

[0026] A driving shaft, mounted on the output end of the driving motor;

[0027] A driving wheel is mounted on the driving shaft, wherein a side of the driving wheel facing the driving motor is divided into a concave section and a flat section;

[0028] The cam unit comprises:

[0029] An upper rotating rod, movably mounted on the bracket;

[0030] An upper shifting wheel is mounted on the top of the upper rotating rod, and an outer edge of the upper shifting wheel contacts a side of the driving wheel facing the driving motor;

[0031] A lower rotating rod, movably mounted on the bracket;

[0032] The limiting member is installed on the outer side of the lower rotating rod, and the limiting member contacts the outer side of the upper rotating rod. The beneficial effect of adopting this step is that the upper rotating rod and the lower rotating rod are driven to rotate through the cooperation of the limiting member, thereby realizing the movement of the push plate.

[0033] Furthermore, the limiting member comprises:

[0034] A limiting plate, wherein the limiting plate is L-shaped;

[0035] A limiting bolt is installed on the limiting member, and an end of the limiting bolt contacts the outer side surface of the upper rotating rod;

[0036] The cam unit also includes a tensioning assembly, one end of the tensioning assembly is connected to the base, and the other end is connected to the upper rotating rod and the lower rotating rod. The tensioning assembly pulls the upper rotating rod so that the upper driving wheel fits with the end surface of the driving wheel, and the tensioning assembly pulls the lower rotating rod so that the limit bolt fits with the outer side surface of the upper rotating rod. The beneficial effect of adopting this step is that the internal components of the cam unit can be swung through the tensioning assembly.

[0037] Furthermore, a displacement sensor is installed on the limit plate, and the displacement sensor corresponds to the outer side surface of the upper rotating rod. The beneficial effect of adopting this step is that measurement can be performed through the displacement sensor. When the gap is too large, an alarm will be sounded, thereby improving work safety.

[0038] Furthermore, the tensioning assembly comprises:

[0039] Two third tension spring columns are respectively installed on two sides of the base;

[0040] Two second tension springs, one end of one of the second tension springs is connected to the upper rotating rod, and the other end is connected to a third tension spring column; one end of the remaining second tension spring is connected to the lower rotating rod, and the other end is connected to the third tension spring column. The beneficial effect of adopting this step is that the two second tension springs are used to realize the coordination of the upper rotating rod, the lower rotating rod and other components to realize swing feeding.

[0041] Furthermore, the second tension spring is inclined inwardly. The beneficial effect of adopting this step is that the inwardly inclined design can ensure the coordination between the upper driving wheel and the driving wheel, and the coordination between the upper rotating rod and the lower rotating rod.

[0042] Furthermore, the tensioning assembly further comprises:

[0043] Two tension rods, one of which is mounted on the side of the upper rotating rod and extends toward a side away from the driving motor; the remaining tension rod is mounted on the side of the lower rotating rod and extends toward a side away from the driving motor;

[0044] Two fourth tension spring columns are assembled one by one with the tension rod. The beneficial effect of this step is that the second tension spring is tilted by setting the tension rod.

[0045] One or more technical solutions provided in the embodiments of the present application have at least the following technical effects or advantages:

[0046] 1. The present application is provided with a cam unit and a driving unit which cooperate with each other to realize the swing of the lower rotating rod, thereby driving the movement of the push plate to complete the feeding.

[0047] 2. The present application is provided with an upper rotating rod and a lower rotating rod, which facilitates the amplification of the movement range, thereby realizing the back and forth movement of the push plate.

[0048] 3. The present application is provided with a tension spring, an upper rotating rod and a lower rotating rod, which can realize mechanical swing, thereby achieving stable high-frequency transmission. BRIEF DESCRIPTION OF THE DRAWINGS

[0049] In order to more clearly illustrate the specific implementation methods of the utility model or the technical solutions in the prior art, the drawings required for use in the specific implementation methods or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are some implementation methods of the utility model. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0050] Figure 1 It is a structural schematic diagram of an end face cam feeding mechanism according to a specific embodiment of the utility model;

[0051] Figure 2 for Figure 1 A schematic diagram of the structure of the cam shifting assembly part;

[0052] 1-base; 2-push track; 3-push plate; 4-first tension spring column; 5-second tension spring column; 6-first tension spring; 7-cam toggle assembly;

[0053] 301-sliding seat; 302-baffle;

[0054] 701- bracket; 702- driving unit; 703- cam unit; 704- lower dial wheel;

[0055] 705-driving motor; 706-driving shaft; 707-driving wheel; 708-concave section; 709-planar section;

[0056] 710-upper rotating rod; 711-upper toggle wheel; 712-lower rotating rod; 713-limiting member;

[0057] 714-limiting plate; 715-limiting bolt; 716-tensioning assembly; 717-displacement sensor; 718-third tension spring column; 719-second tension spring; 720-tensioning rod; 721-fourth tension spring column. DETAILED DESCRIPTION

[0058] The following embodiments of the technical solution of the utility model are described in detail in conjunction with the accompanying drawings. The following embodiments are only used to more clearly illustrate the technical solution of the utility model, and are therefore only used as examples, and cannot be used to limit the protection scope of the utility model.

[0059] It should be noted that, unless otherwise specified, the technical terms or scientific terms used in this application should have the common meanings understood by technicians in the field to which the utility model belongs.

[0060] In this application, unless otherwise clearly specified and limited, the terms "installation", "connection", "fixation" and the like 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, it can be the internal connection of two elements or the interaction relationship between two elements. For ordinary technicians in this field, the specific meanings of the above terms in this utility model can be understood according to specific circumstances.

[0061] In order to better understand the above technical solution, the above technical solution will be described in detail below in conjunction with the accompanying drawings and specific implementation methods.

[0062] Example:

[0063] like Figure 1-2 As shown, the present application discloses an end face cam feeding mechanism for completing material transportation, especially small-amplitude transportation, so that the transportation of small parts can be completed. At the same time, the mechanism is intermittent when feeding, and can cooperate with the working frequency of subsequent devices to ensure stable processing of products.

[0064] The specific structure of this application includes:

[0065] A base 1, which may be a plate or a machine base, or a structure such as a workbench, for supporting or installing related components;

[0066] A material pushing track 2 is installed on the base 1. The material pushing track 2 preferably extends in the horizontal direction to provide a movement path to ensure stable movement of related components, that is, to achieve stable pushing of materials;

[0067] The push plate 3 is installed on the push track 2. The push plate 3 is a movable assembly. According to the needs of the user, a component corresponding to the material can be installed at its end to complete the stable pushing of the material.

[0068] Two first tension spring columns 4 are installed on the base 1 at intervals, and the first tension spring columns 4 are respectively located on both sides of the pushing track 2, one first tension spring column 4 corresponds to one tension spring, and two of them are located on both sides of the pushing track 2, so that it can be formed;

[0069] Two second tension spring columns 5 are respectively installed at the ends of the push plate 3. Similarly, the first tension spring column 4 corresponds to the second tension spring column 5 one by one. After connecting the subsequent tension spring, the connection can be completed and the push plate 3 can be driven to reset.

[0070] Two first tension springs 6, one end of the first tension spring 6 is connected to the first tension spring column 4, and the other end is connected to the second tension spring column 5, the first tension springs 6 are respectively located on both sides of the push track 2, and the first tension springs 6 in the present application are preferably two, which can ensure that the push plate 3 can move stably;

[0071] The cam shifting assembly 7 is installed on the base 1, and the bottom of the cam shifting assembly 7 cooperates with the pushing track 2, and the cam shifting assembly 7 pushes the pushing plate 3 to move along the pushing track 2; the present application utilizes the cam shifting assembly 7 to realize the output function, and at the same time, the cam shifting assembly 7 in the present application can form a function similar to stage conveying of materials, thereby realizing timed feeding, which is convenient for subsequent processing.

[0072] The present application carries out structural design for the push plate 3. Since the push plate 3 needs to move in the horizontal direction, it is necessary to ensure that the first tension spring 6 is in a horizontal position. In order to ensure that the first tension spring 6 is horizontal, the push plate 3 is designed as an L-shaped plate, and the vertical section of the push plate 3 extends downward. At the same time, the vertical section is located on the outside of the base 1. The vertical section of the push plate 3 is installed with the second tension spring column 5. The first tension spring column 4 and the second tension spring column 5 can be at approximately the same height. Finally, the first tension spring 6 is at the same height when assembled to ensure stability.

[0073] In order to achieve stable cooperation between the push plate and the cam toggle assembly 7, a toggle seat 301 is installed on the push plate 3, and the toggle seat 301 is subsequently cooperated with the cam unit, which can be a non-connected cooperation or a connected cooperation;

[0074] like Figure 2 As shown, the cam shifting assembly 7 comprises:

[0075] A bracket 701 is installed on the base 1. The bracket 701 includes other supporting members, which will not be described in detail here;

[0076] A driving unit 702 is mounted on the bracket 701. The driving unit 702 may be a motor or other power element and only needs to realize horizontal rotation.

[0077] The cam unit 703 is movably mounted on the bracket 701 , the top of the cam unit 703 cooperates with the output end of the driving unit 702 , and the bottom of the cam unit 703 cooperates with the toggle seat 301 .

[0078] Regarding the movement mode of the present application, the following explanation is given, that is, the rotation of the driving unit 702 drives the cam unit 703 to swing horizontally, thereby driving the push plate 3 to move horizontally along the push track 2. After the pushing is completed, the push plate 3 is reset by the first tension spring 6.

[0079] Regarding the specific structure of the toggle seat 301, the present application makes the following design, which can be a structure similar to a hinged seat, or the toggle seat 301 can be composed of two baffles 302 arranged at intervals, and the baffles 302 are L-shaped and arranged back to back;

[0080] The cam unit 703 includes a lower driving wheel 704, and the lower driving wheel 704 is arranged between the two baffles 302, that is, the lower driving wheel 704 is against the side of the baffle 302. When the driving unit 702 drives the cam unit 703 to move, the lower driving wheel 704 can be against the baffle 302, thereby pushing the push plate 3 to move. At the same time, the lower driving wheel 704 is rotatable to ensure stability during pushing.

[0081] Further explanation is given for the size of the lower driving wheel 704 and the gap between the baffles 302, wherein the diameter of the lower driving wheel 704 is smaller than the gap between the baffles 302, so that when the cam unit 703 drives the lower driving wheel 704 to move, it can push the baffle 2302, that is, the push plate 3 to move back and forth.

[0082] In order to achieve stable pushing, the driving unit 702 includes:

[0083] The driving motor 705 is installed on the top of the bracket 701, and the output end of the driving motor 705 is arranged horizontally. At the same time, in order to achieve power output, the present application also installs components such as a crank and a driving shaft at the end of the driving motor 705;

[0084] A driving shaft 706 is mounted on the output end of the driving motor 705;

[0085] The driving wheel 707 is mounted on the driving shaft 706. The side of the driving wheel 707 facing the driving motor 705 is divided into a concave section 708 and a flat section 709. That is, the driving wheel 707 in the present application is divided into two parts, and the subsequent contact with the cam unit 703 is utilized to realize the back and forth swing.

[0086] The cam unit 703 includes:

[0087] An upper rotating rod 710 is movably mounted on the bracket 701;

[0088] The upper toggle wheel 711 is mounted on the top of the upper rotating rod 710, and the outer edge of the upper toggle wheel 711 contacts the side of the driving wheel 707 facing the driving motor 705. The upper toggle wheel 711 needs to contact the end surface of the driving wheel 707 at all times, so that the movement of the cam unit 703 can be completed;

[0089] A lower rotating rod 712, movably mounted on the bracket 701;

[0090] The limiting member 713 is installed on the outer side of the lower rotating rod 712 , and the limiting member 713 contacts the outer side of the upper rotating rod 710 .

[0091] The structure of the cam unit 703 is further explained, wherein the cam unit 703 includes two rotating rods, namely an upper rotating rod 710 and a lower rotating rod 712, which are arranged at an interval, and the source of power is that the driving unit 702 pushes the upper rotating rod 710, thereby pushing the lower rotating rod 712 to move, and the bottom end of the lower rotating rod 712 is installed with a lower driving wheel 704, thereby pushing the push plate to move; wherein the limit member 713 is specifically located on the side of the lower rotating rod 712 facing away from the driving motor 705, and it contacts the side of the bottom of the upper rotating rod 710 facing away from the driving motor 705, thereby realizing the pushing of the lower rotating rod 712.

[0092] The bottom end of the lower rotating rod 712 in the present application is higher than the upper surface of the push plate 3, and the limit member 713 is in contact with the outer side of the bottom end of the upper rotating rod 710, and the limit member 713 is located below the rotation connection between the upper rotating rod 710 and the lower rotating rod 712.

[0093] The limiting member 713 is the power source of the lower rotating rod 712, and the limiting member 713 includes:

[0094] The limiting plate 714 is L-shaped. The limiting plate 714 can also be other shapes, as long as the assembly is completed;

[0095] The limiting bolt 715 is installed on the limiting member 713, and the end of the limiting bolt 715 contacts the outer side of the upper rotating rod 710. A nut is installed on the limiting bolt 715 for fixing, so that the limiting bolt 715 is in a more appropriate position, so that the limiting bolt 715 can fit the upper rotating rod.

[0096] In view of the above description, it is necessary to ensure that the upper driving wheel 711 cooperates with the driving wheel 707, and the limit member 713 fits with the upper rotating rod 710 to complete the power transmission; the cam unit 703 in the present application also includes a tensioning assembly 716, one end of the tensioning assembly 716 is connected to the base 1, and the other end is connected to the upper rotating rod 710 and the lower rotating rod 712. The tensioning assembly 716 pulls the upper rotating rod 710 so that the upper driving wheel 711 fits with the end face of the driving wheel 707, and the tensioning assembly 716 pulls the lower rotating rod 712 so that the limit bolt 715 fits with the outer side surface of the upper rotating rod 710.

[0097] In order to ensure the fit of the limit member 713, the present application also installs a displacement sensor 717 on the limit plate 714, and the displacement sensor 717 corresponds to the outer side surface of the upper rotating rod 710, that is, the displacement sensor 717 detects the gap between the limit bolt 715 in the limit member 713 and the upper rotating rod 710. If there is a gap, the displacement sensor 717 transmits a signal to the control component and alarm component connected thereto to complete the alarm; if there is no gap, no alarm will occur.

[0098] Specifically, the tensioning assembly 716 includes:

[0099] Two third tension spring columns 718 are respectively installed on two sides of the base 1;

[0100] There are two second tension springs 719, one end of which is connected to the upper rotating rod, and the other end is connected to the third tension spring column 718; one end of the remaining second tension spring 719 is connected to the lower rotating rod 712, and the other end is connected to the third tension spring column 718; the present application designs the second tension spring 719 to make it an inclined tension spring member for achieving the aforementioned tightening and fitting.

[0101] Specifically, the second tension springs 719 are inclined inwardly, that is, the two second tension springs 719 are parallel to each other and inclined inwardly to achieve tightening and fitting.

[0102] In one embodiment, the tensioning assembly 716 further includes:

[0103] Two tension rods 720, one of which is installed on the side of the upper rotating rod 710, and the tension rod 720 extends toward a side away from the driving motor 705; the remaining tension rod 720 is installed on the side of the lower rotating rod 712, and the tension rod 720 extends toward a side away from the driving motor 705;

[0104] Two fourth tension spring columns 721 are assembled one-to-one with the tensioning rod 720; the tensioning rod 720 in the present application is horizontally arranged, one of which is connected to the upper rotating rod 710, so that the upper rotating rod 710 can be tightened by the corresponding second tension spring 719, thereby realizing the fit between the upper driving wheel 711 and the driving wheel 707; the remaining one is connected to the lower rotating rod 712, so that the lower rotating rod 710 can be tightened by the corresponding second tension spring 719, thereby realizing the fit between the limiting bolt in the limiting member and the outer side of the upper rotating rod 710.

[0105] The motion process of this application is further explained as follows:

[0106] When the spiral-toothed product is delivered to the left end of the push plate, the driving motor 705 rotates until the concave section of the active wheel 707 contacts the upper toggle wheel 711. Due to the operation of one of the second tension springs 719, the upper rotating rod 710 moves inward, so that the upper toggle wheel 711 continues to fit the concave section of the active wheel 707; at the same time, the other second tension spring 719 will also pull the lower rotating rod 712 inward due to the tension until the limit member abuts against the outer side of the upper rotating rod 710. At this time, the lower toggle wheel 704 pushes the toggle seat 301 to move inward, so that the push plate 3 moves inward, so that the corresponding spiral-toothed product arrives at the corresponding position; at the same time, when resetting, the above movement mode is outward movement, and the specific movement mode will not be repeated.

[0107] In the specification of the present utility model, a lot of specific details are described. However, it is understood that the embodiments of the present utility model can be practiced without these specific details. In some examples, well-known methods, structures and techniques are not shown in detail so as not to obscure the understanding of this specification.

[0108] In the description of this specification, the description with reference to the terms "one embodiment", "some embodiments", "example", "specific example", or "some examples" etc. means that the specific features, structures, materials or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the utility model. In this specification, the schematic representations of the above terms do not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described may be combined in any one or more embodiments or examples in a suitable manner. In addition, those skilled in the art may combine and combine the different embodiments or examples described in this specification and the features of the different embodiments or examples, without contradiction.

[0109] Finally, it should be noted that the above embodiments are only used to illustrate the technical solution of the utility model, rather than to limit it. Although the utility model has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that they can still modify the technical solutions described in the aforementioned embodiments, or replace some or all of the technical features therein by equivalents. These modifications or replacements do not make the essence of the corresponding technical solutions deviate from the scope of the technical solutions of the embodiments of the utility model, and they should all be included in the scope of the claims and specification of the utility model.

Claims

1. An end face cam feeding mechanism, characterized in that: include: Base; A material pushing track, installed on the base; A push plate, mounted on the push track; A first tension spring column is installed on the base; A second tension spring column is installed at the end of the push plate, and the second tension spring column is located outside the push track; A first tension spring is arranged horizontally, and two ends of the first tension spring are respectively connected to the first tension spring column and the second tension spring column; A cam shifting assembly is installed on the base, and the bottom of the cam shifting assembly cooperates with the pushing track. The cam shifting assembly pushes the pushing plate to move along the pushing track.

2. The end cam feeding mechanism according to claim 1, characterized in that: The push plate is an L-shaped plate, and the vertical section of the push plate is located outside the base; The second tension spring column is installed on the vertical section of the push plate.

3. The end cam feeding mechanism according to claim 1, characterized in that: A toggle seat is installed on the push plate; The cam shifting assembly comprises: A bracket, mounted on the base; A driving unit, mounted on the bracket; A cam unit is movably mounted on the bracket, wherein the top of the cam unit cooperates with the output end of the driving unit, and the bottom of the cam unit cooperates with the toggle seat.

4. The end cam feeding mechanism according to claim 3, characterized in that: The toggle seat is composed of two baffles arranged at intervals; The cam unit comprises a lower driving wheel, and the lower driving wheel is arranged between the two baffles.

5. The end cam feeding mechanism according to claim 3, characterized in that: The driving unit comprises: A driving motor is installed on the top of the bracket, and the output end of the driving motor is arranged horizontally; A driving shaft, mounted on the output end of the driving motor; A driving wheel is mounted on the driving shaft, wherein a side of the driving wheel facing the driving motor is divided into a concave section and a flat section; The cam unit comprises: An upper rotating rod, movably mounted on the bracket; An upper shifting wheel is mounted on the top of the upper rotating rod, and an outer edge of the upper shifting wheel contacts a side of the driving wheel facing the driving motor; A lower rotating rod, movably mounted on the bracket; A limiting member is installed on the outer side of the lower rotating rod, and the limiting member contacts the outer side of the upper rotating rod.

6. The end cam feeding mechanism according to claim 5, characterized in that: The limiting member comprises: A limiting plate, wherein the limiting plate is L-shaped; A limiting bolt is installed on the limiting member, and an end of the limiting bolt contacts the outer side surface of the upper rotating rod; The cam unit also includes a tensioning assembly, one end of which is connected to the base, and the other end is connected to the upper rotating rod and the lower rotating rod. The tensioning assembly pulls the upper rotating rod so that the upper driving wheel fits with the end surface of the driving wheel, and the tensioning assembly pulls the lower rotating rod so that the limit bolt fits with the outer side surface of the upper rotating rod.

7. The end cam feeding mechanism according to claim 6, characterized in that: A displacement sensor is also installed on the limit plate, and the displacement sensor corresponds to the outer side surface of the upper rotating rod.

8. The end cam feeding mechanism according to claim 6, characterized in that: The tensioning assembly comprises: Two third tension spring columns are respectively installed on two sides of the base; Two second tension springs, one end of one of the second tension springs is connected to the upper rotating rod, and the other end is connected to a third tension spring column; one end of the remaining second tension spring is connected to the lower rotating rod, and the other end is connected to a third tension spring column.

9. The end cam feeding mechanism according to claim 8, characterized in that: The second tension spring is inclined inwardly.

10. The end cam feeding mechanism according to claim 8, characterized in that: The tensioning assembly also includes: Two tension rods, one of which is mounted on the side of the upper rotating rod and extends toward a side away from the driving motor; the remaining tension rod is mounted on the side of the lower rotating rod and extends toward a side away from the driving motor; Two fourth tension spring columns are assembled in one-to-one correspondence with the tension rods.

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