Cut-off knife maintenance testing device

Abstract

A cut-off knife maintenance testing device comprises a dead knife simulation mechanism which simulates the function of a dead knife mechanism on a rewinding machine; the upper cutter mechanism mounting part is used for mounting an upper cutter mechanism of the rewinding machine to be tested, and the upper cutter mechanism mounting part is staggered relative to the dead cutter simulation mechanism mounting part in the cutter feeding direction and the cutter leaning direction in the cut-off cutter maintenance testing device; and the control mechanism is used for driving the upper cutter mechanism to move in the cutter feeding direction and the cutter leaning direction relative to the dead cutter simulation mechanism under the condition of simulating parameters of real operation on the rewinding machine. By means of the cutter maintenance testing device, the cutter of the rewinder after maintenance can be tested under the condition that parameters such as air pressure on the machine are simulated, and therefore it is guaranteed that the cutter after maintenance can stably run on the machine.

Description

TECHNICAL FIELD

[0001] The utility model relates to a cutting tool maintenance testing device, more specifically, to a cutting tool maintenance testing device suitable for testing the cutting tool of a rewinder after maintenance. BACKGROUND

[0002] A rewinder is a special equipment for paper, mica tape and film, which is used to sequentially rewind the paper roll (called raw paper roll) produced by a paper machine. After rewinding, the paper becomes finished paper and is shipped out.

[0003] A rewinder is an important equipment used in the papermaking, printing and packaging industries. It is mainly used for secondary processing of paper, film and metal foil. Its main purposes include changing the specifications of materials, i.e., cutting large rolls of materials into small rolls of specific width and length to meet different needs. For example, cutting large rolls of paper into small rolls suitable for use in printers.

[0004] To cut wide paper into narrow paper with a certain width, different cutting tools are installed in the width direction of the rewinder. Each cutting tool has an upper knife seat and a lower knife seat, and in each seat, there is an upper knife blade and a lower knife blade, which are circular cutting blades. When cutting paper, the two blades need to be brought close to each other (blade approach operation), and the cutting edges need to be overlapped by about 2 mm.

[0005] To achieve the blade approach operation, a gas bag is provided on the lower knife seat, and a motor is used to drive the upper knife seat to move. At the lower end of the upper knife seat, a gas cylinder and a hand valve are also provided, which can achieve the blade approach and retreat of the upper knife seat relative to the lower knife seat through the gas pressure of the gas cylinder.

[0006] Since the upper knife mechanism needs to be repeatedly approached and retreated relative to the lower knife mechanism during the cutting process, the upper knife mechanism assembly is prone to damage and often needs to be repaired.

[0007] However, in the past maintenance measures, the cutting tool (upper knife mechanism) of the rewinder cannot obtain the same gas pressure test as on the machine after maintenance, so it is not possible to confirm whether all the repaired cutting tools can be reliably used on the machine, resulting in some problems with the repaired cutting tools when used on the machine, which cannot meet the operating conditions and need to be disassembled and repaired again, affecting the use efficiency of the rewinder and causing serious economic losses.

[0008] Therefore, it is desirable to provide a cutting tool maintenance testing device that can ensure that the cutting tool of the rewinder can be used stably on the machine after maintenance. SUMMARY

[0009] The utility model discloses a cutting tool maintenance testing device which can test the cutting tool of the rewinding machine after maintenance under the condition of simulating the air pressure and other parameters of the simulation machine, thereby ensuring that the cutting tool after maintenance can stably run on the machine.

[0010] In order to realize the purpose of the utility model, the cutting tool maintenance testing device is suitable for testing the cutting tool of the rewinding machine, and comprises a bottom knife simulation mechanism, an upper knife mechanism mounting part and a control mechanism.

[0011] According to the above-mentioned structure, the cutting tool of the rewinding machine after maintenance can be installed into the cutting tool maintenance testing device, and under the operation of the control mechanism, the cutting tool can be tested under the condition of simulating the real running parameters of the simulation machine, thereby ensuring that the cutting tool can stably run on the machine after installation.

[0012] Preferably, the control mechanism comprises a total gas source, a total hand valve is arranged in the flow path where the total gas source is located, and the total hand valve opens and closes the gas flow in the flow path where the total gas source is located.

[0013] According to the above-mentioned structure, the control mechanism can be supplied with gas through the total gas source, and the opening and closing of the total gas source can be controlled through the total hand valve, thereby ensuring the normal operation of the control mechanism.

[0014] Preferably, the total gas source is bifurcated into an advancing knife gas path and a leaning knife gas path through the total hand valve.

[0015] Preferably, an advancing knife throttle valve and an advancing knife hand valve are arranged in the advancing knife gas path, and a leaning knife throttle valve and a leaning knife hand valve are arranged in the leaning knife gas path, the advancing knife throttle valve and the leaning knife throttle valve respectively adjust the gas flow pressure in the advancing knife gas path, and the advancing knife hand valve and the leaning knife hand valve respectively adjust the opening and closing of the gas flow in the leaning knife gas path.

[0016] According to the above-mentioned configuration, by dividing the total gas source into the tool feeding gas path and the tool abutting gas path, and respectively setting the hand valve and the throttle valve in each flow path to control, the tool feeding operation and the tool abutting operation of the cutting tool can be controlled separately, so that whether the cutting tool has a fault under each working condition can be tested separately, thereby facilitating the testing and maintenance.

[0017] Preferably, a pressure regulating valve is arranged in the tool abutting gas path or the tool feeding gas path, and the pressure regulating valve adjusts the gas flow pressure of the flow path to a specific value to simulate the real operating environment on the machine.

[0018] According to the above-mentioned configuration, the gas pressure of the flow path can be adjusted to a specific pressure value by the pressure regulating valve, so that the real operating environment on the machine can be simulated.

[0019] Preferably, the tool feeding hand valve is arranged on the downstream side of the tool feeding throttle valve in the tool feeding gas path, and the tool abutting hand valve is arranged on the downstream side of the tool abutting throttle valve in the tool abutting gas path.

[0020] According to the above-mentioned configuration, in the tool feeding gas path and the tool abutting gas path, by arranging the hand valve on the downstream side of the throttle valve, the opening and closing control of the flow path can be reliably performed, thereby ensuring the stability of the test.

[0021] Preferably, a tool feeding cylinder is arranged on the downstream side of the tool feeding hand valve, and a tool abutting cylinder is arranged on the downstream side of the tool abutting hand valve, and the tool feeding cylinder and the tool abutting cylinder drive the upper tool mechanism to perform the tool feeding operation and the tool abutting operation when the gas flow passes through.

[0022] Preferably, in the tool feeding operation, the upper tool mechanism moves to a position opposite to the bottom tool simulation mechanism in the tool abutting direction, and in the tool abutting operation, the upper tool mechanism moves to a position overlapping the bottom tool simulation mechanism in the tool abutting direction.

[0023] According to the above-mentioned configuration, the tool feeding operation and the tool abutting operation of the cutting tool can be performed by the tool feeding cylinder and the tool abutting cylinder respectively, so that the cutting tool after maintenance can be reliably tested.

[0024] Preferably, a resilient reset member is further arranged in the tool feeding cylinder and the tool abutting cylinder, and when the gas flow is closed, the resilient reset member automatically resets the tool feeding cylinder and the tool abutting cylinder, and drives the upper tool mechanism to perform the tool retracting operation.

[0025] According to the above-mentioned configuration, by the resilient reset member arranged in the cylinder, the tool retracting operation can be reliably performed when the gas flow is closed.

[0026] It is preferable that a sliding rail is provided in the upper cutter mechanism mounting portion, and the upper cutter mechanism moves in the feeding direction and the approaching direction relative to the bottom cutter simulation mechanism via the sliding rail.

[0027] According to the above configuration, the feeding and approaching operations of the cutter can be reliably performed through the sliding rail, and the operation is simple and reliable. BRIEF DESCRIPTION OF DRAWINGS

[0028] With reference to the above objects, the technical features of the present application are clearly described in the following technical solutions, and the advantages thereof are apparent from the following detailed description with reference to the accompanying drawings, which show preferred embodiments of the present application by way of example, but do not limit the scope of the present application concept.

[0029] Figure 1 is a schematic diagram of the overall structure of the cutter maintenance testing device of the present application.

[0030] Figure 2 is a schematic diagram of the use state of the cutter maintenance testing device of the present application.

[0031] SYMBOL DESCRIPTION

[0032] 1 cutter maintenance testing device;

[0033] 11 upper cutter mechanism mounting portion;

[0034] 12 bottom cutter simulation mechanism;

[0035] 13 control mechanism;

[0036] 13a total gas source;

[0037] 13b total hand valve;

[0038] 13c feeding throttle valve;

[0039] 13d feeding hand valve;

[0040] 13e pressure regulating valve;

[0041] 13f approaching throttle valve;

[0042] 13g approaching hand valve;

[0043] 111 upper cutter mechanism;

[0044] 111a upper cutter seat;

[0045] 111b upper cutter blade;

[0046] 111c feeding cylinder;

[0047] 111d approaching cylinder. DETAILED DESCRIPTION

[0048] Embodiments of the present invention will now be described in detail, examples of which are illustrated in the accompanying drawings. Although the present invention is described in conjunction with exemplary embodiments, it should be appreciated that this description is not intended to limit the present invention to the exemplary embodiments described below. On the contrary, the present invention is intended to cover not only the exemplary embodiments, but also various alternatives, modifications, equivalents, and other embodiments that may be included within the spirit and scope of the present invention as defined by the appended claims.

[0049] Below, refer to Figure 1 , the overall structure of the cutter maintenance and testing device 1 of the present invention is described.

[0050] like Figure 1 As shown, the cutter maintenance and testing device 1 of the present invention mainly comprises three parts as a whole: an upper knife mechanism mounting portion 11 , a bottom knife simulation mechanism 12 and a control mechanism 13 .

[0051] The upper knife mechanism mounting portion 11 is used for installing the upper knife mechanism 111 of the cutter of the rewinding machine to be tested after maintenance, and the bottom knife simulation mechanism 12 is used to simulate the bottom knife mechanism on the rewinding machine to facilitate testing of the upper knife mechanism 111 of the cutter of the rewinding machine to be tested after maintenance.

[0052] In addition, the upper knife mechanism mounting portion 11 and the bottom knife simulation mechanism 12 are staggered by a certain distance in the knife feed direction and the knife leaning direction, respectively, so that the upper knife mechanism 111 and the bottom knife simulation mechanism 12 can be staggered by a certain distance in the knife feed direction and the knife leaning direction after installation.

[0053] The upper knife mechanism 111 cuts the paper by moving closer to the bed knife simulation mechanism 12 (approaching the knife), and performs the next cutting operation by moving away from the bed knife simulation mechanism 12 (retracting the knife).

[0054] Specifically, during use, the upper knife mechanism 111 first needs to be moved in the feed direction to directly above the bottom knife simulation mechanism 12 (feed operation), then the upper knife mechanism 111 needs to be moved in the approach direction to a position overlapping with the bottom knife simulation mechanism 12 (approach operation), and finally the upper knife mechanism 111 needs to be reset to the initial position (retract operation).

[0055] The control mechanism 13 mainly adjusts the airflow pressure that drives the cutter of the rewinder to be tested to perform feed and cutter operations, simulating the parameters of operations on a normal rewinder, thereby facilitating debugging and maintenance operations.

[0056] Next, refer toFigure 2 , the use process of the cutter repair and testing device 1 of the present invention is described.

[0057] like Figure 2 As shown, during use, firstly, the upper blade mechanism 111 of the cutter of the rewinder to be tested that has been repaired needs to be installed in the upper blade mechanism installation portion 11 of the cutter repair and testing device 1 .

[0058] The above-mentioned upper knife mechanism 111 mainly includes an upper knife seat 111a, an upper knife blade 111b, a feed cylinder 111c and a knife-leaving cylinder 111d. The above-mentioned upper knife mechanism 111 is installed on the cutter maintenance and testing device 1 by fixing the upper knife seat 111a to the upper knife mechanism mounting part 11, and the upper knife blade 111b is installed on the upper knife seat 111a. The above-mentioned feed cylinder 111c and the knife-leaving cylinder 111d are respectively used to drive the upper knife mechanism 111 to perform feed and knife-leaving operations.

[0059] The structure of the bed knife simulation mechanism 12 is similar to that of the bed knife mechanism on the rewinder, and simulates the function of the bed knife mechanism on the rewinder, thereby facilitating the performance testing of the repaired upper knife mechanism 111 in the cutter repair testing device 1 .

[0060] The upper knife seat 111a is fixed on a specific track (not shown) in the upper knife mechanism mounting portion 11, so that it can move along the specific track driven by the feed cylinder 111c and the leaning cylinder 111d to perform feed and leaning operations.

[0061] Specifically, if Figure 2 As shown, the above-mentioned feed cylinder 111c and the blade-leaning cylinder 111d are respectively connected to one end in the long side direction and one end in the short side direction of the upper knife holder 111a, and are used to actuate the upper knife mechanism 111 to perform feed and blade-leaning operations. As a result, the upper knife holder 111a equipped with the upper knife blade 111b can move in the feed direction and the blade-leaning direction relative to the bottom knife simulation mechanism 12, so that paper cutting can be performed through the blade-leaning operation of the upper knife mechanism 111 and the bottom knife simulation mechanism 12.

[0062] More specifically, the above-mentioned feed cylinder 111c and the knife-leaning cylinder 111d respectively include a sleeve and an actuating rod that can perform telescopic movement in the sleeve. The above-mentioned sleeve is fixed on the body of the cutter maintenance and testing device 1, and after air flow is introduced into the sleeve, it can drive the actuating rod to perform telescopic movement, thereby driving the feed cylinder 111c and the knife-leaning cylinder 111d to perform feed and leaning operations.

[0063] In addition, a return spring is provided in the above-mentioned knife-feeding cylinder 111c and the knife-leaning cylinder 111d. When the airflow from the outside is closed, the actuating rod of the cylinder will automatically return to its original position.

[0064] Next, referring to Figure 2 The control mechanism 13 mainly includes a total gas source 13a, a total hand valve 13b, an infeed throttle valve 13c, an infeed hand valve 13d, a pressure regulating valve 13e, a backing throttle valve 13f, and a backing hand valve 13g.

[0065] The total gas source 13a is arranged at the source of the control mechanism 13, and gas is supplied to the entire control mechanism 13 through the total gas source 13a, so that the cylinders are actuated by the pressure of the gas.

[0066] The total hand valve 13b is arranged at the downstream side of the total gas source 13a, and controls the opening and closing of the total gas source 13a, that is, the total switch of the gas supply of the control mechanism 13.

[0067] As shown in Figure 2 The gas flowing out of the total hand valve 13b is branched into two paths, an infeed gas path and a backing gas path, and is finally supplied to the infeed cylinder 111c and the backing cylinder 111d, respectively.

[0068] Specifically, the infeed gas path, which is one of the two paths of the gas flowing out of the total hand valve 13b, supplies the gas to the infeed throttle valve 13c and finally to the infeed cylinder 111c via the infeed hand valve 13d, and the backing gas path, which is the other path, supplies the gas to the pressure regulating valve 13e and finally to the backing cylinder 111d in turn via the backing throttle valve 13f and the backing hand valve 13g.

[0069] The infeed throttle valve 13c and the infeed hand valve 13d are used to control the infeed operation of the tool setting mechanism 111, and the pressure regulating valve 13e, the backing throttle valve 13f, and the backing hand valve 13g are used to control the backing operation of the tool setting mechanism 111.

[0070] The pressure regulating valve 13e can adjust the specific pressure of the gas flowing therethrough, for example, 320 kpa, so as to simulate the real on-machine pressure parameter when the backing operation is performed.

[0071] The infeed throttle valve 13c and the backing throttle valve 13f are valves that control the flow rate of fluid by changing the throttle section or the throttle length, and unlike the pressure regulating valve, the throttle valves can only adjust the flowing gas to a general pressure range, but cannot adjust it to a specific pressure value.

[0072] The infeed hand valve 13d and the backing hand valve 13g, like the total hand valve 13b, respectively function as the switches of the gas flow in the paths, and can open and close the gas flow in the paths by opening and closing the hand valves, so the hand valves are generally arranged at the upstream side closest to the cylinder that needs to be actuated.

[0073] Hereinafter, the specific testing process of the cutter maintenance testing device 1 of the utility model will be described. Figure 2

[0074] Firstly, the parameters of each component of the device need to be pre-adjusted before initial use.

[0075] Specifically, firstly, the upper cutter mechanism 111 of the rewinding machine to be tested is installed into the upper cutter mechanism installation part 11 of the cutter maintenance testing device, and the total hand valve 13b, the feeding hand valve 13d and the abutting hand valve 13g are opened, so that the feeding air cylinder 111c and the abutting air cylinder 111d are ventilated, and the upper cutter mechanism 111 is subjected to feeding and abutting operations relative to the bottom cutter simulation mechanism 12.

[0076] Then, the pressure regulating valve 13e is adjusted and the air flow pressure is adjusted to 320 kpa (it can also be adjusted to other values according to actual conditions), and the feeding throttle valve 13c and the abutting throttle valve 13f are adjusted to make the feeding air cylinder 111c and the abutting air cylinder 111d slowly act, and the valve opening degrees of the pressure regulating valve 13e, the feeding throttle valve 13c and the abutting throttle valve 13f are fixed, and in the later testing process, the opening degrees of the pressure regulating valve 13e, the feeding throttle valve 13c and the abutting throttle valve 13f do not need to be adjusted again unless there is a special reason.

[0077] After the parameter setting of each component is completed, the total hand valve 13b, the feeding hand valve 13d and the abutting hand valve 13g are closed, and then normal maintenance testing can be carried out, and the specific testing steps are as follows:

[0078] (1) Firstly, the total hand valve 13b is opened, so that the entire cutter maintenance testing device 1 is ventilated with air flow from the total gas source 13a;

[0079] (2) Check whether the feeding mechanism has problems: open the feeding hand valve 13d to make the feeding air cylinder 111c perform feeding operation, and in this process, observe and check whether the action of the feeding mechanism has problems, if there are problems, close the feeding hand valve 13d, and adjust the feeding mechanism, then repeat the above operation, and test again to confirm whether the feeding mechanism has faults (the feeding operation mainly confirms that when the feeding hand valve 13d is opened, the feeding air cylinder 111c acts and drives the upper cutter mechanism 111a to move to the position of being clamped with the cutter holder, i.e. the top of the bottom cutter simulation mechanism 12);

[0080] ​(3) Check whether there is any problem with the knife-supporting mechanism: After adjusting and confirming that there is no problem with the knife-feeding mechanism, open the knife-supporting hand valve 13g to enable the knife-supporting cylinder 111d to perform the knife-supporting operation. During this process, observe and check whether there is any problem with the knife-supporting mechanism. If there is any problem, close the knife-supporting hand valve 13g and adjust the knife-supporting mechanism. Then repeat the above operation and test again to confirm whether there is any fault with the knife-supporting mechanism (the main confirmation of the knife-feeding operation is: when the knife-supporting hand valve 13g is opened, the knife-supporting cylinder 111d drives the upper knife mechanism 111a to move to the position where the upper knife blade 111b and the bottom knife simulation mechanism 12 slightly overlap, whether the upper knife blade 111b can rotate normally relative to the bottom knife simulation mechanism 12, and whether there is any jamming or friction).

[0081] (4) After confirming that there are no problems with the feed mechanism and the resting mechanism as described above, a systematic test is performed, that is, simulating the operation of first feeding the tool and then resting the tool on the machine. The specific operation steps are as follows: first open the feed hand valve 13d to perform the feed operation, and then open the resting hand valve 13g to perform the resting operation; then close the resting hand valve 13g to perform the retracting and resting operation, and then close the feed hand valve 13d to perform the retracting and feeding operation.

[0082] Repeat the above-mentioned cyclic actions of feeding, leaning, retracting, and feeding and retracting the knife in sequence to ensure that the cutter assembly that needs to be repaired has been repaired intact.

[0083] After confirming that the cutter assembly that needs repair has been repaired, the upper knife mechanism 111 that has completed the test is removed from the upper knife mechanism installation portion 11 of the cutter repair and testing device 1 and installed back on the rewinder to be used.

[0084] (Technical Effect)

[0085] Through the cutter maintenance and testing device 1 of the present invention, a set of gas flow paths with basically the same parameters as those on the machine can be simulated under the machine, and multiple tests and adjustments and maintenance can be carried out under the machine. After confirming that the maintenance and adjustment are completed, it can be installed on the rewinding machine. The condition of the cutter after maintenance can be effectively detected, and the repaired cutter can be installed back to the rewinding machine for reliable operation and use on the machine.

[0086] Although the structure and working principle of the present invention have been described above in conjunction with preferred embodiments, those skilled in the art will recognize that the above examples are for illustration only and do not constitute a limitation of the present invention. The present invention may be modified and varied within the spirit of the claims, and such modifications and variations shall fall within the scope of protection of the present invention.

[0087] For example, in the utility model, the example that sets up pressure regulating valve in the flow path of the tool is shown, but the utility model is not limited to this, also can set up pressure gauge in total flow path, and set up pressure regulating valve in the flow path of the tool, only need to conveniently adjust the gas pressure of the flow path of the tool to the desired pressure.

Claims

1. A cutting knife maintenance and testing device (1), which is suitable for performing maintenance and testing on the cutting knife of a rewinding machine, and is characterized in that: The cutter maintenance and testing device (1) comprises: a bed knife simulation mechanism (12), which simulates the function of the bed knife mechanism on the rewinding machine; an upper knife mechanism mounting portion (11), the upper knife mechanism mounting portion (11) being used to mount an upper knife mechanism (111) of a rewinder to be tested, the upper knife mechanism mounting portion (11) being staggered relative to the bottom knife simulation mechanism (12) in the cutter maintenance and testing device (1) in a knife feed direction and a knife leaning direction; and A control mechanism (13) drives the upper knife mechanism (111) to move in a knife feed direction and a knife approach direction relative to the bottom knife simulation mechanism (12) while simulating parameters actually running on the rewinder.

2. The cutter maintenance and testing device (1) according to claim 1, characterized in that: The control mechanism (13) includes a total gas source (13a), and a total manual valve (13b) is provided in the flow path where the total gas source (13a) is located. The total manual valve (13b) opens and closes the gas flow in the flow path where the total gas source (13a) is located.

3. The cutter maintenance and testing device (1) according to claim 2, characterized in that: The total air source (13a) passes through the total manual valve (13b) and branches into a knife-feeding air path and a knife-receiving air path.

4. The cutting knife maintenance and testing device (1) according to claim 3, characterized in that: A knife feed throttle valve (13c) and a knife feed hand valve (13d) are provided in the knife feed air path, and a knife leaning throttle valve (13f) and a knife leaning hand valve (13g) are provided in the knife leaning air path. The knife feed throttle valve (13c) and the knife support throttle valve (13f) respectively adjust the airflow pressure in the knife feed air path, and the knife feed hand valve (13d) and the knife support hand valve (13g) respectively adjust the opening and closing of the airflow in the knife support air path.

5. The cutter maintenance and testing device (1) according to claim 4, characterized in that: A knife feed hand valve (13e) is provided in the knife-approaching air path or the knife feed air path. The knife feed hand valve (13e) adjusts the air flow pressure of the flow path to simulate the actual operating environment on the machine.

6. The cutter maintenance and testing device (1) according to claim 4, characterized in that: The knife feed hand valve (13d) is arranged on the downstream side of the knife feed throttle valve (13c) in the knife feed air path. The knife hand valve (13g) is arranged on the downstream side of the knife throttle valve (13f) in the knife air path.

7. The cutter maintenance and testing device (1) according to claim 6, characterized in that: A knife feed cylinder (111c) is provided on the downstream side of the knife feed hand valve (13d), and a knife leaning cylinder (111d) is provided on the downstream side of the knife leaning hand valve (13g). The knife-feeding cylinder (111c) and the knife-leaning cylinder (111d) drive the knife-lifting mechanism (111) to perform knife-feeding operation and knife-leaning operation when air flows through the cylinder.

8. The cutter maintenance and testing device (1) according to claim 7, characterized in that: During the knife feeding operation, the upper knife mechanism (111) moves along the knife feeding direction to a position opposite to the bottom knife simulation mechanism (12) in the knife leaning direction. During the knife-leaning operation, the upper knife mechanism (111) moves along the knife-leaning direction to a position overlapping with the bottom knife simulation mechanism (12).

9. The cutter maintenance and testing device (1) according to claim 8, characterized in that: Elastic reset components are also provided in the knife feed cylinder (111c) and the knife support cylinder (111d). When the airflow is closed, the elastic reset components automatically reset the knife feed cylinder (111c) and the knife support cylinder (111d) and drive the knife upper mechanism (111) to perform a knife retracting operation.

10. The cutter maintenance and testing device (1) according to claim 1, characterized in that: A sliding track is provided in the upper knife mechanism mounting portion (11), and the upper knife mechanism (111) moves relative to the bottom knife simulation mechanism (12) in a knife feed direction and a knife approach direction via the sliding track.

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