Cylindrical block foam mold cutting apparatus

Abstract

The utility model provides a kind of columnar blocky foam mould cutting equipment, comprising: base, cutting device, positioning device, pressing mechanism, sliding device and electric cylinder;Cutting device bottom is movably connected with sliding device, and electric cylinder is arranged on the side of sliding device, and electric cylinder is used to drive sliding device output end to drive cutting device to move in X axis direction;Positioning device is located below cutting device, and positioning device includes: first positioning mechanism and second positioning mechanism, first positioning mechanism is used to position blocky foam, and second positioning mechanism is used to position columnar foam;Cutting device, positioning device, pressing mechanism, sliding device and electric cylinder are all installed on base.This columnar blocky foam mould cutting equipment can accurately position foam of different shapes by adjusting the distance between the two positioning end blocks of first positioning mechanism, and the pressing mechanism can ensure the stability of the foam during cutting, avoiding displacement of the foam during cutting affecting cutting accuracy.

Description

Technical Field

[0001] This utility model relates to cutting equipment, specifically to a cutting equipment for columnar and block-shaped foam molds. Background Technology

[0002] In the field of mold cutting, especially for cutting columnar and block foam molds, traditional equipment often has some shortcomings. Common cutting equipment has a relatively simple structure and limited functions, making it difficult to simultaneously meet the needs for efficient and precise cutting of both columnar and block foam.

[0003] In the existing technology, foam mold cutting equipment mainly includes: a cutting frame, a base and a positioning device. The cutting frame is installed on one side of the base, and the positioning device presses the block foam through the positioning end block. Then, the cutting blade on the cutting frame cuts the block foam. However, in traditional equipment, the positioning device is mostly a fixed structure, which cannot flexibly adapt to foam molds of different sizes and specifications. Furthermore, when it is necessary to cut columnar foam, the positioning device needs to be replaced. It cannot handle two types of foam, which seriously affects production efficiency. Utility Model Content

[0004] This utility model aims to provide a columnar and block-shaped foam mold cutting device, which solves the problem that the positioning device in the prior art cannot position multiple types of foam, and cannot flexibly position foam molds of different sizes and specifications.

[0005] To achieve the above objectives, the present invention adopts the following technical solution: The present invention provides a columnar and blocky foam mold cutting device, including: a base, a cutting device, a positioning device, a pressing mechanism, a sliding device, and an electric cylinder; the bottom of the cutting device is movably connected to the sliding device, and an electric cylinder is provided on one side of the sliding device. The electric cylinder is used to drive the output end of the sliding device to move the cutting device in the X-axis direction; the positioning device is located below the cutting device, and the positioning device includes: a first positioning mechanism and a second positioning mechanism. The first positioning mechanism is used to position blocky foam, and the second positioning mechanism is used to position columnar foam; the first positioning mechanism is located at the center cutting position below the cutting device, and the pressing mechanism is located on the side of the first positioning mechanism away from the second positioning mechanism. The pressing mechanism is installed next to the first positioning mechanism and is also connected to the second positioning mechanism. The pressing mechanism is used to position the first positioning mechanism, and when the pressing mechanism positions the first positioning mechanism, it causes the second positioning mechanism to deviate from the center cutting position; the cutting device, the positioning device, the pressing mechanism, the sliding device, and the electric cylinder are all installed on the base.

[0006] Preferably, there are two sliding devices, with the pressing mechanism and positioning device located between the two sliding devices. Each sliding device includes: a first support base, a slide rail and a slider. The slide rail is installed on the first support base, and the slider is slidably connected to the slide rail. In one sliding device, the slider is connected to the output end of an electric cylinder, and the electric cylinder is used to drive the slider to slide on the slide rail.

[0007] Preferably, the cutting device includes: a support frame, a cross frame, a lifting mechanism, and a cutting blade. There are two support frames, with one support frame corresponding to each sliding device. The tops of the two support frames are connected by the cross frame, and the bottoms of the support frames are connected to the slider. The lifting mechanism is installed at the support frame, and the cutting blade is installed at the output end of the lifting mechanism. The lifting mechanism is used to drive the cutting blade to rise and fall.

[0008] Preferably, the lifting mechanism includes a vertical guide sliding assembly and a chain drive assembly. The vertical guide sliding assembly can be lifted and lowered under the guidance. There are two vertical guide sliding assemblies, one of which is installed at each support frame. A chain drive assembly is installed at one support frame, and the output end of the chain drive assembly is connected to a vertical guide sliding assembly.

[0009] Preferably, the vertical guide sliding assembly includes a lifting rod and a lifting block, the lifting block being wrapped around the lifting rod, the lifting rod being fixedly installed next to the support frame, and the lifting block being connectable to the output end of the chain drive assembly.

[0010] Preferably, the chain drive assembly includes: a chain, a first transmission gear, a second transmission gear, and a servo motor. A rotatable first transmission gear is mounted on the top of the support frame, and a rotatable second transmission gear is mounted on one side of the lifting block. The chain is wrapped around the first transmission gear and the second transmission gear. A servo motor is mounted next to the first transmission gear, and the output end of the servo motor is connected to the first transmission gear.

[0011] Preferably, the first positioning mechanism includes: a second support base, a positioning base, and a positioning end block. The second support base is installed between the two first support bases, the positioning base is installed on the second support base, a sliding groove is opened on one side of the positioning base, and the bottom end of the positioning end block is slidably installed in the sliding groove.

[0012] There are two positioning end blocks, which are used to clamp the block-shaped foam.

[0013] Preferably, a second positioning mechanism is provided next to the second support base. The second positioning mechanism includes a disc-shaped base, a rotary motor, and a movable base. The top surface of the disc-shaped base is provided with a number of positioning teeth for insertion into the columnar foam. The movable base is located below the disc-shaped base and is connected to the pressing mechanism. A rotary motor is installed inside the movable base, and the output end of the rotary motor is connected to the disc-shaped base.

[0014] Preferably, the second support is located between the clamping mechanism and the second positioning mechanism. The clamping mechanism includes a clamping plate, a bolt, a sliding seat, and a guide rail. The clamping plate is located on one side of the second support. The bolt passes through the clamping plate and the second support and is rotatably connected to the movable seat. The bolt is threadedly connected to the second support and can drive the clamping plate to move linearly.

[0015] Preferably, the clamping plate has a clamping block protruding from the side near the positioning end block, and the clamping block is used to restrict the movement of the positioning end block by friction;

[0016] A guide rod is provided on the side of the clamping plate near the second support seat, and the guide rod extends through the second support seat toward the first support seat.

[0017] Compared with existing technologies, this utility model has the following advantages: The bottom of the cutting device of this columnar / block foam mold cutting equipment is movably connected to a sliding device. An electric cylinder is provided on one side of the sliding device. The positioning device includes a first positioning mechanism and a second positioning mechanism. A clamping mechanism is connected to the second positioning mechanism to position the first positioning mechanism and to offset the second positioning mechanism from the center cutting position. When cutting block foam, the distance between the two positioning end blocks of the first positioning mechanism can be adjusted to accurately position foam of different shapes. At the same time, the clamping mechanism can ensure the stability of the foam during the cutting process and prevent displacement of the foam during cutting, thus affecting the cutting accuracy. When cutting columnar foam, the second positioning mechanism is used to fix the columnar foam. The clamping mechanism can drive the second positioning mechanism to move to the cutting area for cutting without disassembling the first positioning mechanism. The electric cylinder drives the cutting device to move in the X-axis direction. Combined with the lifting function of the cutting device, efficient and accurate cutting of foam can be achieved, effectively improving the cutting quality and production efficiency of columnar / block foam molds.

[0018] Other advantages, objectives and features of this invention will be partly apparent from the following description, and partly understood by those skilled in the art through study and practice of this invention. Attached Figure Description

[0019] Figure 1 This is a schematic diagram of a columnar or block-shaped foam mold cutting device.

[0020] Figure 2 This is a schematic diagram of a columnar or block-shaped foam mold cutting device.

[0021] Figure 3 for Figure 2 Enlarged view of point A in the middle.

[0022] Figure 4 for Figure 2 Enlarged view of section B in the middle.

[0023] Reference numerals: Base 1, Cutting device 2, Support frame 21, Horizontal frame 22, Lifting mechanism 23, Vertical guide sliding assembly 231, Lifting rod 2311, Lifting block 2312, Chain drive assembly 232, Chain 2321, First transmission gear 2322, Second transmission gear 2323, Servo motor 2324, Cutting blade 24, Positioning device 3, First positioning mechanism 31, Second support seat 311, Positioning seat 312, Positioning end block 313, Slide groove 314, Second positioning mechanism 32, Disc seat 321, Positioning tooth 322, Moving seat 323, Pressing mechanism 4, Pressing plate 41, Pressing block 411, Guide rod 412, Bolt 42, Sliding seat 43, Guide rail 44, Sliding device 5, First support seat 51, Slide rail 52, Slider 53, Electric cylinder 6. Detailed Implementation

[0024] To make the technical means, creative features, objectives and effects of this utility model clearer and easier to understand, the present utility model will be further described below in conjunction with the accompanying drawings and specific embodiments.

[0025] like Figures 1 to 4 As shown, this utility model proposes a columnar / block foam mold cutting device, including: a base 1, a cutting device 2, a positioning device 3, a clamping mechanism 4, a sliding device 5, and an electric cylinder 6; the bottom of the cutting device 2 is movably connected to the sliding device 5, and an electric cylinder 6 is provided on one side of the sliding device 5. The electric cylinder 6 is used to drive the output end of the sliding device 5 to move the cutting device 2 in the X-axis direction; the positioning device 3 is located below the cutting device 2, and the positioning device 3 includes: a first positioning mechanism 31 and a second positioning mechanism 32. The first positioning mechanism 31 is used to position the block foam, and the second positioning mechanism 32 is used to position the block foam. 2 is used to position columnar foam; the first positioning mechanism 31 is located at the center cutting position below the cutting device 2, the clamping mechanism 4 is located on the side of the first positioning mechanism 31 away from the second positioning mechanism 32, the clamping mechanism 4 is installed next to the first positioning mechanism 31, and the clamping mechanism 4 is also connected to the second positioning mechanism 32. The clamping mechanism 4 is used to position the first positioning mechanism 31, and when the clamping mechanism 4 positions the first positioning mechanism 31, it causes the second positioning mechanism 32 to deviate from the center cutting position. The cutting device 2, the positioning device 3, the clamping mechanism 4, the sliding device 5 and the electric cylinder 6 are all installed on the base 1.

[0026] In use, when cutting block-shaped foam, the clamping mechanism 4 locks the first positioning mechanism 31 in the center cutting position, and the clamping mechanism 4 also causes the second positioning mechanism 32 to deviate from the center cutting position, preventing the positioning structure of the columnar foam from interfering with the cutting process; when cutting columnar foam, the opposite operation is performed. The electric cylinder 6 is activated, driving the sliding device 5 to move the cutting device 2 along the X-axis direction. At the same time, the cutting device 2 is raised and lowered as needed to achieve precise cutting of foams of different shapes and sizes.

[0027] Two sliding devices 5 are provided, with the clamping mechanism 4 and the positioning device 3 located between the two sliding devices 5. Each sliding device 5 includes: a first support base 51, a slide rail 52, and a slider 53. The slide rail 52 is mounted on the first support base 51, and the slider 53 is slidably connected to the slide rail 52. In one sliding device 5, the slider 53 is connected to the output end of an electric cylinder 6, which drives the slider 53 to slide on the slide rail 52. When the electric cylinder 6 is activated, the power it generates is transmitted to the slider 53, driving the slider 53 to slide along the slide rail 52. Since the bottom of the cutting device 2 is movably connected to the sliding device 5, the movement of the slider 53 on the slide rail 52 will cause the cutting device 2 to move in the X-axis direction.

[0028] The cutting device 2 includes a support frame 21, a crossbar 22, a lifting mechanism 23, and a cutting blade 24. Two support frames 21 are provided, one for each sliding device 5. The tops of the two support frames 21 are connected by the crossbar 22, and the bottoms of the support frames 21 are connected to the slider 53. The lifting mechanism 23 is installed on the support frame 21, and the cutting blade 24 is installed at the output end of the lifting mechanism 23. The lifting mechanism 23 drives the cutting blade 24 to move up and down. The lifting mechanism 23 is mounted on the support frame 21, and its output end is connected to the cutting blade 24, driving the cutting blade 24 to move up and down in the vertical direction. When it is necessary to cut foam of different heights, the lifting mechanism 23 is activated, causing the cutting blade 24 to rise or fall to the target position. During cutting, the electric cylinder 6 drives the slider 53 to slide on the slide rail 52, causing the cutting device 2 to move in the X-axis direction. Simultaneously, the cutting blade 24 performs up and down cutting actions under the drive of the lifting mechanism 23.

[0029] The lifting mechanism 23 includes a vertical guide sliding assembly 231 and a chain 2321 type drive assembly 232. The vertical guide sliding assembly 231 can move up and down under guidance. There are two vertical guide sliding assemblies 231, one of which is installed at each support frame 21. A chain 2321 type drive assembly 232 is installed at each support frame 21, and the output end of the chain 2321 type drive assembly 232 is connected to a vertical guide sliding assembly 231. Each support frame 21 has one vertical guide sliding assembly 231, for a total of two, which can achieve lifting movement under guidance. One of the support frames 21 also has a chain 2321 type drive assembly 232 installed, the output end of which is connected to the corresponding vertical guide sliding assembly 231. When it is necessary to drive the cutting blade 24 to rise or fall, the chain 2321 type drive assembly 232 is activated, and the vertical guide sliding assembly 231 is driven to move in the vertical direction through the chain 2321, so that the cutting blade 24 installed at the output end of the lifting mechanism 23 can perform the rising or falling action.

[0030] The vertical guide sliding assembly 231 includes a lifting rod 2311 and a lifting block 2312. The lifting block 2312 surrounds the lifting rod 2311, and the lifting rod 2311 is fixedly installed next to the support frame 21. The lifting block 2312 can be connected to the output end of the chain 2321 type drive assembly 232. When the chain 2321 type drive assembly 232 is started, the power at its output end is transmitted to the lifting block 2312, causing the lifting block 2312 to move vertically up and down along the guide path of the lifting rod 2311. The lifting block 2312 is connected to the cutting blade 24, and its lifting action directly drives the cutting blade 24 to adjust its height, thereby achieving precise cutting of foam of different thicknesses.

[0031] The chain-driven drive assembly 232 includes a chain 2321, a first transmission gear 2322, a second transmission gear 2323, and a servo motor 2324. A rotatable first transmission gear 2322 is mounted on the top of the support frame 21, and a rotatable second transmission gear 2323 is mounted on one side of the lifting block 2312. The chain 2321 wraps around the first and second transmission gears 2322 and 2323. The servo motor 2324 is mounted next to the first transmission gear 2322, and its output is connected to the first transmission gear 2322. When the servo motor 2324 starts, its output power drives the first transmission gear 2322 to rotate, which in turn drives the second transmission gear 2323 to rotate synchronously via the chain 2321. Since the chain 2321 is connected to the lifting block 2312, the rotation of the second transmission gear 2323 causes the lifting block 2312 to move vertically up and down along the lifting rod 2311.

[0032] The first positioning mechanism 31 includes a second support base 311, a positioning base 312, and a positioning end block 313. The second support base 311 is installed between the two first support bases 51, and the positioning base 312 is installed on the second support base 311. A groove 314 is opened on one side of the positioning base 312, and the bottom end of the positioning end block 313 is slidably installed in the groove 314. There are two positioning end blocks 313, and the two positioning end blocks 313 are used to clamp the block foam. When it is necessary to position the block foam, the positions of the two symmetrically distributed positioning end blocks 313 are adjusted so that they move closer or further apart from each other, thereby firmly clamping the block foam between them and ensuring that the position of the foam is stable during the cutting process and will not shift.

[0033] A second positioning mechanism 32 is provided next to the second support base 311. The second positioning mechanism 32 includes a disc-shaped base 321, a rotary motor, and a movable base 323. The top surface of the disc-shaped base 321 is provided with several positioning teeth 322, which are used to insert into the columnar foam. The movable base 323 is located below the disc-shaped base 321 and is connected to the pressing mechanism 4. The rotary motor is installed inside the movable base 323, and the output end of the rotary motor is connected to the disc-shaped base 321. When it is necessary to cut the columnar foam, the movable base 323 first moves the disc-shaped base 321 to a suitable position, the positioning teeth 322 are inserted into the bottom of the columnar foam, and after the rotary motor is started, the columnar foam can be rotated to the required angle to ensure the accuracy and flexibility of the cutting.

[0034] The second support base 311 is located between the clamping mechanism 4 and the second positioning mechanism 32. The clamping mechanism 4 includes a clamping plate 41, a bolt 42, a sliding seat 43, and a guide rail 44. The clamping plate 41 is located on one side of the second support base 311. The bolt 42 passes through the clamping plate 41 and the second support base 311 and is rotatably connected to the movable seat 323. The bolt 42 is threadedly connected to the second support base 311 and can drive the clamping plate 41 to move linearly. When the bolt 42 rotates, it drives the clamping plate 41 to move linearly along the guide rail 44 through threaded transmission. The sliding seat 43 is installed on the guide rail 44 to ensure the stability and linearity of the movement of the clamping plate 41. When it is necessary to position the first positioning mechanism 31, the rotation of the bolt 42 causes the clamping plate 41 to move towards the first positioning mechanism 31. The friction between the clamping plate 41 and the positioning end block 313 restricts the movement of the positioning end block 313, thereby fixing the first positioning mechanism 31 in the cutting position. Meanwhile, since the pressing mechanism 4 is connected to the second positioning mechanism 32, when the pressing plate 41 moves, it will drive the moving seat 323 and the second positioning mechanism 32 to move as a whole, causing the second positioning mechanism 32 to deviate from the center cutting position, thereby making room for cutting block foam.

[0035] A pressing plate 41 has a protruding pressing block 411 on the side near the positioning end block 313. The pressing block 411 is used to restrict the movement of the positioning end block 313 through friction. A guide rod 412 is provided on the side of the pressing plate 41 near the second support seat 311. The guide rod 412 passes through the second support seat 311 and extends towards the first support seat 51. When it is necessary to fix the block foam, the pressing mechanism 4 is activated, and the pressing block 411 fits tightly against the positioning end block 313. The friction generated prevents the positioning end block 313 from sliding in the slide groove 314, ensuring the stability of the block foam during the cutting process. The guide rod 412 is installed on the side of the pressing plate 41 near the second support seat 311. The guide rod 412 passes through the second support seat 311 and extends towards the first support seat 51. The presence of the guide rod 412 ensures the linear motion accuracy of the pressing plate 41 during the movement process.

[0036] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of this utility model and are not intended to limit it. Although this utility model has been described in detail with reference to preferred embodiments, those skilled in the art should understand that modifications or equivalent substitutions can be made to the technical solutions of this utility model without departing from the spirit and scope of the technical solutions of this utility model, and all such modifications or substitutions should be covered within the scope of the claims of this utility model.

Claims

1. A columnar / block foam mold cutting device, characterized in that, include: Base (1), cutting device (2), positioning device (3), clamping mechanism (4), sliding device (5) and electric cylinder (6); The bottom of the cutting device (2) is movably connected to the sliding device (5). An electric cylinder (6) is provided on one side of the sliding device (5). The electric cylinder (6) is used to drive the output end of the sliding device (5) to move the cutting device (2) in the X-axis direction. The positioning device (3) is located below the cutting device (2). The positioning device (3) includes a first positioning mechanism (31) and a second positioning mechanism (32). The first positioning mechanism (31) is used to position block foam, and the second positioning mechanism (32) is used to position columnar foam. The first positioning mechanism (31) is located at the center cutting position below the cutting device (2). The clamping mechanism (4) is located on the side of the first positioning mechanism (31) away from the second positioning mechanism (32). The clamping mechanism (4) is installed next to the first positioning mechanism (31) and is also connected to the second positioning mechanism (32). The clamping mechanism (4) is used to position the first positioning mechanism (31), and when the clamping mechanism (4) positions the first positioning mechanism (31), it causes the second positioning mechanism (32) to deviate from the center cutting position. The cutting device (2), positioning device (3), clamping mechanism (4), sliding device (5) and electric cylinder (6) are all mounted on the base (1).

2. The columnar / block foam mold cutting equipment according to claim 1, characterized in that, There are two sliding devices (5). The pressing mechanism (4) and the positioning device (3) are located between the two sliding devices (5). Each sliding device (5) includes: a first support base (51), a slide rail (52) and a slider (53). The slide rail (52) is installed on the first support base (51), and the slider (53) is slidably connected to the slide rail (52). In a sliding device (5), the slider (53) is connected to the output end of an electric cylinder (6), and the electric cylinder (6) is used to drive the slider (53) to slide on the slide rail (52).

3. The columnar / block foam mold cutting equipment according to claim 2, characterized in that, The cutting device (2) includes: a support frame (21), a cross frame (22), a lifting mechanism (23), and a cutting blade (24). There are two support frames (21), and each sliding device (5) is provided with a corresponding support frame (21). The tops of the two support frames (21) are connected by the cross frame (22), and the bottoms of the support frames (21) are connected to the slider (53). The lifting mechanism (23) is installed at the support frame (21), and the cutting blade (24) is installed at the output end of the lifting mechanism (23). The lifting mechanism (23) is used to drive the cutting blade (24) to rise and fall.

4. The columnar / block foam mold cutting equipment according to claim 3, characterized in that, The lifting mechanism (23) includes a vertical guide sliding assembly (231) and a chain (2321) type drive assembly (232). The vertical guide sliding assembly (231) can be lifted and lowered under the guide. There are two vertical guide sliding assemblies (231). A vertical guide sliding assembly (231) is installed at each support frame (21). A chain (2321) type drive assembly (232) is installed at one support frame (21). The output end of the chain (2321) type drive assembly (232) is connected to a vertical guide sliding assembly (231).

5. The columnar / block foam mold cutting equipment according to claim 4, characterized in that, The vertical guide sliding assembly (231) includes a lifting rod (2311) and a lifting block (2312), the lifting block (2312) surrounding the lifting rod (2311), the lifting rod (2311) being fixedly installed next to the support frame (21), and the lifting block (2312) being connectable to the output end of the chain (2321) type drive assembly (232).

6. The columnar / block foam mold cutting equipment according to claim 4 or 5, characterized in that, The chain (2321) type drive assembly (232) includes: chain (2321), first transmission sprocket (2322), second transmission sprocket (2323) and servo motor (2324). The top of the support frame (21) is equipped with a rotatable first transmission sprocket (2322), and the side of the lifting block (2312) is equipped with a rotatable second transmission sprocket (2323). The chain (2321) is wrapped around the first transmission sprocket (2322) and the second transmission sprocket (2323). The servo motor (2324) is installed next to the first transmission sprocket (2322), and the output end of the servo motor (2324) is connected to the first transmission sprocket (2322).

7. The columnar / block foam mold cutting equipment according to any one of claims 1 to 5, characterized in that, The first positioning mechanism (31) includes: a second support base (311), a positioning base (312) and a positioning end block (313). The second support base (311) is installed between the two first support bases (51). The positioning base (312) is installed on the second support base (311). A sliding groove (314) is opened on one side of the positioning base (312). The bottom end of the positioning end block (313) is slidably installed in the sliding groove (314). There are two positioning end blocks (313), and the two positioning end blocks (313) are used to clamp the block foam.

8. The columnar / block foam mold cutting equipment according to claim 7, characterized in that, A second positioning mechanism (32) is provided next to the second support base (311). The second positioning mechanism (32) includes: a disc-shaped base (321), a rotary motor, and a movable base (323). The top surface of the disc-shaped base (321) is provided with a number of positioning teeth (322). The positioning teeth (322) are used to insert into the columnar foam. The movable base (323) is located below the disc-shaped base (321). The movable base (323) is connected to the pressing mechanism (4). A rotary motor is installed inside the movable base (323). The output end of the rotary motor is connected to the disc-shaped base (321).

9. The columnar / block foam mold cutting equipment according to claim 8, characterized in that, The second support base (311) is located between the clamping mechanism (4) and the second positioning mechanism (32). The clamping mechanism (4) includes: a clamping plate (41), a bolt (42), a sliding seat (43) and a guide rail (44). The clamping plate (41) is located on one side of the second support base (311). The bolt (42) passes through the clamping plate (41) and the second support base (311) and is rotatably connected to the moving seat (323). The bolt (42) is threadedly connected to the second support base (311). The bolt (42) can drive the clamping plate (41) to move linearly.

10. The columnar / block foam mold cutting equipment according to claim 9, characterized in that, The clamping plate (41) has a clamping block (411) protruding on the side near the positioning end block (313). The clamping block (411) is used to restrict the movement of the positioning end block (313) by friction. The clamping plate (41) is provided with a guide rod (412) on the side near the second support seat (311), and the guide rod (412) extends through the second support seat (311) toward the first support seat (51).

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