An extrusion pressure detection device for an extruder

Abstract

The present invention provides an extrusion pressure detection device for an extruder. The extrusion pressure detection device for an extruder includes: a portal frame, on the inner wall of the top of the portal frame, two fixing plates are slidably installed, on the inner walls of both sides of the portal frame, the same bidirectional lead screw is rotatably installed, the bidirectional lead screw penetrates through the two fixing plates and is threadedly connected to the two fixing plates, on the outer walls of the sides of the two fixing plates close to each other, C-shaped clamping plates are fixedly installed, on the outer walls of both sides of the portal frame, fixing arms are provided, on the outer walls of the sides of the two fixing arms close to each other, the same support plate is fixedly installed, a sliding opening is formed in the support plate, a moving plate is slidably installed in the sliding opening, and a pressure sensor and a support block are fixedly installed on the moving plate. The extrusion pressure detection device provided by the present invention has the advantages of flexible, reliable and safe use and little impact on production.

Description

Technical Field

[0001] The present invention relates to the technical field of extruders, and particularly to an extrusion pressure detection device for an extruder. Background Art

[0002] A vacuum extruder is a device used for producing red bricks. It can uniformly mix the red brick raw materials and extrude them into the required shape of the brick blank. Relevant operators only need to perform lamp cutting on the extruded brick blank material at the outlet of the extruder. The extrusion pressure of the vacuum extruder will affect both the production speed and quality of the product. Therefore, it is necessary to measure it so that relevant process personnel can know.

[0003] In the prior art, the Chinese utility model patent with the application number CN201837496U discloses an extrusion pressure detection device for a vacuum extruder. It sets a cylinder body, a pressure sensor is arranged at the top of the cylinder body, a pressure probe is arranged at the bottom opening of the cylinder body, and the outer edge of the pressure probe is hermetically connected to the inner wall of the cylinder body by a diaphragm. A force transmission rod is fixedly arranged in the center of the pressure probe, and the force transmission rod is arranged along the axis of the cylinder body to serve as the force-receiving probe of the pressure sensor; a pressure display unit is set, and the output signal feeder line of the pressure sensor is connected to the pressure display unit. Although this utility model can directly obtain the pressure digital value, its pressure induction and transmission sensitivity are high, the accuracy is high, and the service life is long, but it is installed on the extruder and can only detect the extrusion pressure of its own extruder and cannot detect the extrusion pressure of other extruders, so its use is not flexible enough.

[0004] Therefore, it is necessary to provide an extrusion pressure detection device for an extruder to solve the above technical problems. Summary of the Invention

[0005] The technical problem solved by the present invention is to provide an extrusion pressure detection device for an extruder that is flexible, reliable, safe to use, and has little impact on production.

[0006] To solve the above technical problems, the extrusion pressure detection device of the extruder provided by the present invention includes: a gantry, two fixing plates are slidably installed on the inner wall of the top of the gantry, and the same bidirectional lead screw is rotatably installed on the inner walls of both sides of the gantry. The bidirectional lead screw penetrates through the two fixing plates and is threadedly connected to the two fixing plates. C-shaped clamping plates are fixedly installed on the outer walls of the two fixing plates close to each other. Fixed arms are provided on the outer walls of both sides of the gantry, and the same support plate is fixedly installed on the outer walls of the two fixed arms close to each other. A sliding opening is formed in the support plate, a moving plate is slidably installed in the sliding opening, a pressure sensor and a support block are fixedly installed on the moving plate, a stress rod is penetrated and slidably installed on the support block, one end of the stress rod is in contact with the stress receiving end of the pressure sensor, and the other end of the stress rod is fixedly installed with a contact plate. A pressure digital display is fixedly installed on the moving plate, the output wire of the pressure sensor is connected to the pressure digital display, an upper limiting block is fixedly installed on the top of the moving plate, the bottom of the upper limiting block is in contact with the top of the support plate, a lower limiting block is fixedly sleeved on the moving plate, and the top of the lower limiting block is in contact with the bottom of the support plate. A clamping mechanism is arranged on the top of the support plate, and the clamping mechanism is used to limit the movement of the upper limiting block.

[0007] Preferably, the clamping mechanism includes a first mounting block, a pin rod is penetrated and slidably installed on the first mounting block, a card slot adapted to the pin rod is formed at one end of the upper limiting block close to the first mounting block, one end of the pin rod extends into the card slot, an end block is fixedly installed at the end of the pin rod away from the upper limiting block, a retaining spring is sleeved on the pin rod, one end of the retaining spring is fixedly connected to the end block, the other end of the retaining spring is fixedly connected to the first mounting block, and a pulling block is fixedly installed on the outer wall of the end block away from the pin rod.

[0008] Preferably, two limiting slide bars are penetrated and slidably installed on the inner wall of one side of the C-shaped clamping plate, the same front clamping plate is fixedly installed at one ends of the two limiting slide bars located inside the C-shaped clamping plate, a threaded rod is threadedly installed on the inner wall of one side of the C-shaped clamping plate, and one end of the threaded rod located inside the C-shaped clamping plate is rotatably connected to the front clamping plate. A top limiting plate is fixedly installed on the top of the C-shaped clamping plate.

[0009] Furthermore, an anti-slip pad is fixedly installed on the outer wall of the front clamping plate away from the two limiting slide bars.

[0010] Preferably, the side of the sliding opening away from the moving plate is of an open type, and both fixed arms are fixedly installed on the gantry through bolts.

[0011] Furthermore, a blocking and buffering mechanism is provided on the top of the support plate. The blocking and buffering mechanism includes two second mounting blocks. The same blocking rod is rotatably mounted on the two second mounting blocks. A first rubber strip is fixedly mounted on the outer wall of the side of the blocking rod close to the moving plate. A hand-held block is fixedly mounted on the outer wall of the side of the blocking rod away from the moving plate. A reinforcing blocking block is fixedly mounted on the top of the support plate. The reinforcing blocking block is in contact with the outer wall of the side of the blocking rod away from the moving plate.

[0012] Preferably, the side of the sliding opening away from the moving plate is non-open. Square insertion plates are fixedly mounted at the bottoms of the two fixed arms. Square hollow cylinders adapted to the square insertion plates are fixedly mounted on the inner walls of both sides of the portal frame. The two square insertion plates penetrate through the corresponding square hollow cylinders and are slidably connected to the inner walls of the corresponding square hollow cylinders.

[0013] Furthermore, the two corners at the bottom of the square insertion plate are designed with rounded corners.

[0014] Furthermore, a second rubber strip is fixedly mounted on the inner wall of the side of the sliding opening away from the moving plate.

[0015] Compared with the related art, the extrusion pressure detection device for an extruder provided by the present invention has the following beneficial effects:

[0016] ① By arranging components such as a portal frame, a fixing plate, a bidirectional lead screw, a C-shaped clamping plate, a fixed arm, a support plate, a moving plate, a pressure sensor, a force-bearing rod, and a contact plate, when in use, the device can be fixed at the outlet of a vacuum extruder through simple operations to detect the extrusion pressure of the brick blank material. After the detection is completed, it can be removed and the extrusion pressure of other extruders can be detected continuously. It has the advantages of reliable fixation and flexible use. Through the arrangement of the sliding opening, the upper limiting block, and the clamping mechanism, the rapid locking or unlocking of the moving plate can be realized. After the detection is completed, the moving plate and the pressure sensor, force-bearing rod, etc. mounted on the moving plate can be quickly removed, which will not hinder the normal extrusion of the subsequent brick blank material. It has the advantages of convenient use and less impact on production.

[0017] ② By arranging the blocking and buffering mechanism, the moving plate can be blocked to prevent the moving plate from rushing out of the sliding opening due to excessive force. And the blocking and buffering mechanism can also buffer the moving plate, reducing the instantaneous impact force of the upper limiting block on the blocking rod, which is beneficial to the protection of components such as a pressure digital display meter and a pressure sensor. It has the advantages of reliable and safe use. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 It is a schematic structural diagram of the first embodiment of the extrusion pressure detection device for an extruder provided by the present invention from a side view perspective;

[0019] Figure 2 is the structural schematic diagram of the gantry shown; Figure 1 as shown in;

[0020] Figure 3 is the structural schematic diagram of the moving plate shown; Figure 1 as shown in;

[0021] Figure 4 is the structural schematic diagram of the clamping mechanism shown; Figure 1 as shown in;

[0022] Figure 5 is the structural schematic diagram of the second embodiment of the extrusion pressure detection device for an extruder provided by the present invention from a side view perspective;

[0023] Figure 6 is the structural schematic diagram of the blocking and buffering mechanism shown; Figure 5 as shown in;

[0024] Figure 7 is the structural schematic diagram of the second embodiment of the extrusion pressure detection device for an extruder provided by the present invention from a top view perspective;

[0025] Figure 8 is the structural schematic diagram of the third embodiment of the extrusion pressure detection device for an extruder provided by the present invention from a top view perspective.

[0026] Reference numerals in the figure: 1, gantry; 2, fixed plate; 3, bidirectional lead screw; 4, C-shaped clamping plate; 5, fixed arm; 6, support plate; 7, sliding opening; 8, moving plate; 9, pressure sensor; 10, support block; 11, force-bearing rod; 12, contact plate; 13, pressure digital display; 14, upper limit block; 15, lower limit block; 16, card slot; 17, clamping mechanism; 18, blocking and buffering mechanism; 19, square hollow cylinder; 20, square plug board; 401, limit sliding rod; 402, front side clamping plate; 403, threaded rod; 404, top limit plate; 1701, first mounting block; 1702, pin rod; 1703, end block; 1704, holding spring; 1705, hand-pulling block; 1801, second mounting block; 1802, blocking rod; 1803, first rubber strip; 1804, hand-held block; A1, vacuum extruder; A2, flange. Specific embodiments

[0027] The present invention will be further described below in conjunction with the accompanying drawings and embodiments.

[0028] First embodiment

[0029] Please refer to Figures 1-4, in the first embodiment of the present invention, the extrusion pressure detection device of the extruder includes: a gantry 1. A limiting slideway is provided on the inner wall of the top of the gantry 1. Two fixing plates 2 are slidably installed in the limiting slideway. The same bidirectional lead screw 3 is rotatably installed on the inner walls of both sides of the gantry 1. Threaded nuts are fixedly installed in both fixing plates 2. The bidirectional lead screw 3 passes through the two threaded nuts, and the external threads with opposite helix directions at both ends are respectively screwed with the inner walls of the two threaded nuts. Handwheels are fixedly installed at both ends of the bidirectional lead screw 3, which is convenient for the user to rotate it. In order to further limit the movement trajectories of the two fixing plates 2, a long slide bar is also fixedly installed on the inner walls of both sides of the gantry 1. The long slide bar passes through the two fixing plates 2 and is slidably connected to the two fixing plates 2. C-shaped clamping plates 4 are fixedly installed on the outer walls of the two fixing plates 2 close to each other. As Figure 1 shown, during use, by rotating the bidirectional lead screw 3 forward, the two C-shaped clamping plates 4 approach each other, and finally the C-shaped clamping plates 4 are clamped on the flange A2 at the outlet of the vacuum extruder A1, which fixes the entire device. Fixed arms 5 are provided on the outer walls of both sides of the gantry 1. In this embodiment, the two fixed arms 5 are both fixedly installed on the gantry 1 by bolts. The same support plate 6 is fixedly installed on the outer walls of the two fixed arms 5 close to each other. A sliding opening 7 is provided on the support plate 6. A moving plate 8 is slidably installed in the sliding opening 7. The side of the sliding opening 7 away from the moving plate 8 is open. Pulling the moving plate 8 away from the gantry 1 can make it slide out of the sliding opening 7. A pressure sensor 9 and a support block 10 are fixedly installed on the moving plate 8. A force-bearing rod 11 passes through and is slidably installed on the support block 10. One end of the force-bearing rod 11 is in contact with the force-bearing end of the pressure sensor 9. The other end of the force-bearing rod 11 is fixedly installed with a contact plate 12. When the contact plate 12 is physically squeezed, the pressure acts on the force-bearing end of the pressure sensor 9 through the force-bearing rod 11, so that the pressure value can be detected. A pressure digital display 13 is fixedly installed on the moving plate 8. The output wire of the pressure sensor 9 is connected to the pressure digital display 13, and the pressure value is displayed in real time through the pressure digital display 13. An upper limiting block 14 is fixedly installed on the top of the moving plate 8. The bottom of the upper limiting block 14 is in contact with the top of the support plate 6. A lower limiting block 15 is fixedly sleeved on the moving plate 8. The top of the lower limiting block 15 is in contact with the bottom of the support plate 6. Under the limitation of the upper limiting block 14 and the lower limiting block 15, the moving plate 8 can be prevented from moving upward or downward. A clamping mechanism 17 is provided on the top of the support plate 6. The clamping mechanism 17 is used to limit the movement of the upper limiting block 14. During use, the moving plate 8 is pushed into the sliding opening 7 from the open side of the sliding opening 7. As the moving plate 8 moves, the contact plate 12 can move into the outlet of the vacuum extruder A1. Then, the upper limiting block 14 is clamped and locked by the clamping mechanism 17, which can prevent the moving plate 8 from moving backward. In this way, when the contact plate 12 is stressed, the pressure sensor 9 can be ensured to be stressed reliably.

[0030] In this embodiment, the clamping mechanism 17 specifically includes a first mounting block 1701. A smooth hole is formed in the first mounting block 1701. A pin rod 1702 is inserted through and slidably mounted in the smooth hole. A clamping groove 16 adapted to the pin rod 1702 is formed at one end of the upper limiting block 14 close to the first mounting block 1701. One end of the pin rod 1702 extends into the clamping groove 16. A terminal block 1703 is fixedly mounted at the end of the pin rod 1702 away from the upper limiting block 14. A retaining spring 1704 is sleeved on the pin rod 1702. One end of the retaining spring 1704 is fixedly connected to the terminal block 1703, and the other end of the retaining spring 1704 is fixedly connected to the first mounting block 1701. A pulling block 1705 is fixedly mounted on the outer wall of the side of the terminal block 1703 away from the pin rod 1702. By hooking the pulling block 1705 with the index finger and middle finger and pulling it in a direction away from the first mounting block 1701, the pin rod 1702 can be pulled out of the clamping groove 16 to release the restriction on the upper limiting block 14.

[0031] In this embodiment, in order to increase the reliability of the fixation of the entire device, two limiting slide rods 401 are inserted through and slidably mounted on one inner wall of the C-shaped clamping plate 4. The same front clamping plate 402 is fixedly mounted at one ends of the two limiting slide rods 401 located inside the C-shaped clamping plate 4. A threaded rod 403 is threadedly mounted on one inner wall of the C-shaped clamping plate 4. One end of the threaded rod 403 located inside the C-shaped clamping plate 4 is rotatably connected to the front clamping plate 402. A hand rod is arranged at the end of the threaded rod 403 located outside the C-shaped clamping plate 4. When the threaded rod 403 is rotated forward, the threaded rod 403 moves into the C-shaped clamping plate 4 during rotation, and the threaded rod 403 pushes the front clamping plate 402 to move, so that the front clamping plate 402 can abut against the front side of the flange A2 at the outlet of the vacuum extruder A1. In order to further increase the reliability of the fixation, an anti-slip pad is fixedly mounted on the outer wall of the side of the front clamping plate 402 away from the two limiting slide rods 401. In this embodiment, a top limiting plate 404 is fixedly mounted on the top of the C-shaped clamping plate 4. During clamping, the top limiting plate 404 contacts the top of the flange A2 to prevent the two C-shaped clamping plates 4 from sliding down.

[0032] In this embodiment:

[0033] When in use, the portable gantry 1 is put on the flange A2 at the outlet of the vacuum extruder A1 from top to bottom, and the top limiting plates 404 are placed on the top of the flange A2. Then the gantry 1 is moved forward to make the rear side wall of the flange A2 fit with the rear inner walls of the two C-shaped clamps 4. Then, the two-way screw rod 3 is rotated forward to make the two C-shaped clamps 4 approach each other. Finally, the two C-shaped clamps 4 will be clamped on both sides of the flange A2 respectively. After that, the two threaded rods 403 are rotated forward in turn, and the threaded rods 403 push the front side clamp 402 to move, so that the anti-skid pad on the front side clamp 402 is tightly attached to the front side of the flange A2. At this point, the fixation of the device is completed, and then the movable plate 8 is removed from the sliding port. The opening on one side of 7 is pushed into the sliding port 7. As the moving plate 8 moves forward, the contact plate 12 can move to the outlet of the vacuum extruder A1. Before the moving plate 8 is pushed into place, the hand-pull block 1705 is pulled away from the first mounting block 1701. The hand-pull block 1705 drives the pin 1702 to move through the end block 1703, so that the pin 1702 no longer blocks the moving plate 8. During the above process, the retaining spring 1704 will be stretched. When the moving plate 8 is pushed into place, the hand-pull block 1705 is released. Under the pulling force of the retaining spring 1704, the pin 1702 will do a reset movement, thereby being stuck in the slot 16 on the upper limiting block 14, so that the moving plate 8 cannot retreat.

[0034] When the vacuum extruder A1 is working, the extruded brick material will hit the rear contact plate 12, and the contact plate 12 will transfer the force to the force-bearing end of the pressure sensor 9 through the force-bearing rod 11. The pressure sensor 9 will display the detected pressure value through the pressure digital display 13 for the relevant inspection personnel to observe in real time;

[0035] After completing the test, hold the handle on the upper limiting block 14 with one hand and pull the pin 1702 out of the slot 16 with the other hand. After releasing the lock of the upper limiting block 14, the movable plate 8 can be pulled out from the slide 7. In this way, the front side of the outlet of the vacuum extruder A1 is not blocked, and the subsequent extrusion of the brick blanks is not affected. The remaining components such as the gantry 1, C-shaped clamping plate 4 fixed on the flange A2 at the outlet of the vacuum extruder A1 can be released later.

[0036] Second embodiment:

[0037] Based on the extruder pressure detection device provided by the first embodiment of the present application, the second embodiment of the present application provides another extruder pressure detection device. The second embodiment is only a preferred embodiment of the first embodiment, and the implementation of the second embodiment will not affect the independent implementation of the first embodiment.

[0038] The second embodiment of the present invention is further described below in conjunction with the accompanying drawings and implementation modes.

[0039] Please refer to Figures 5-7, the extrusion pressure detection device of the extruder further includes a blocking and buffering mechanism 18 arranged on the top of the support plate 6. The blocking and buffering mechanism 18 includes two second mounting blocks 1801. Circular rotation holes are formed in both of the two second mounting blocks 1801. The same rotating shaft is rotatably installed in the two circular rotation holes. A blocking rod 1802 is fixedly sleeved on the rotating shaft. A first rubber strip 1803 is fixedly installed on the outer wall of the blocking rod 1802 close to the moving plate 8. A hand-held block 1804 is fixedly installed on the outer wall of the blocking rod 1802 away from the moving plate 8. When performing extrusion pressure detection, the brick blank gives a forward thrust to the contact plate 12. When the pin rod 1702 is pulled out from the card slot 16 (that is, the moment when the upper limiting block 14 is unlocked), when the extrusion pressure of the brick blank is relatively large, the forward impact force of the moving plate 8 will be very large. The arrangement of the blocking rod 1802 can block the moving plate 8 to prevent the moving plate 8 from slipping out of the sliding opening 7 and falling due to the relatively small holding force of the operator. And the first rubber strip 1803 can buffer the moving plate 8. A reinforcing block is fixedly installed on the top of the support plate 6. The reinforcing block is in contact with the outer wall of the blocking rod 1802 away from the moving plate 8. The reinforcing block can increase the impact strength of the blocking rod 1802.

[0040] In this embodiment:

[0041] Before the moving plate 8 is pushed into the sliding opening 7, the blocking rod 1802 is only located on one side of the sliding opening 7 and will not hinder the moving plate 8. After the moving plate 8 is pushed in place and locked, the blocking rod 1802 is rotated clockwise by half a turn through the hand-held block 1804, that is Figure 5 the state shown. After the extrusion pressure detection is completed, at the moment when the upper limiting block 14 is unlocked, if the extrusion pressure of the brick blank is relatively large, the forward impact force of the moving plate 8 will be very large. If the tester is a little careless or the holding force of the upper limiting block 14 is too small, the moving plate 8 will slip out of the sliding opening 7 and fall, which is likely to damage components such as the pressure digital display 13 and the pressure sensor 9. The arrangement of the blocking rod 1802 can block the moving plate 8 to avoid the above situation. And the first rubber strip 1803 can also buffer the moving plate 8 to reduce the instantaneous impact force of the upper limiting block 14 on the blocking rod 1802. A reinforcing block is fixedly installed on the top of the support plate 6. The reinforcing block is in contact with the outer wall of the blocking rod 1802 away from the moving plate 8. The reinforcing block can increase the impact strength of the blocking rod 1802, having the advantages of reliable and safe use.

[0042] The third embodiment:

[0043] Refer to Figure 8, in this embodiment, the side of the sliding opening 7 away from the moving plate 8 is non-open, the moving plate 8 is always within the sliding opening 7, and the two fixed arms 5 are not fixed to the gantry 1 by bolts, but are installed on the gantry 1 in a plug-in manner. Specifically, square insertion plates 20 are fixedly installed at the bottoms of the two fixed arms 5, and square hollow cylinders 19 adapted to the square insertion plates 20 are fixedly installed on the inner walls of both sides of the gantry 1. The two square insertion plates 20 penetrate through the corresponding square hollow cylinders 19 and are slidably connected to the inner walls of the corresponding square hollow cylinders 19. After the extrusion pressure test is completed and it is necessary to remove the moving plate 8 and the detection elements installed thereon, relevant personnel can hold the two fixed arms 5 with both hands and then lift them upward. The two square insertion plates 20 can then be withdrawn from the corresponding square hollow cylinders 19, and then the two fixed arms 5 can be dragged forward. In this way, the two fixed arms 5, the support plate 6, the moving plate 8 and the detection elements installed thereon can be removed together.

[0044] In this embodiment, when installing the two fixed arms 5, in order to make the square insertion plates 20 more smoothly inserted into the corresponding square hollow cylinders 19, the two corners at the bottom of the square insertion plates 20 are designed to be rounded.

[0045] In this embodiment, a second rubber strip is fixedly installed on the inner wall of the side of the sliding opening 7 away from the moving plate 8. When unlocking the upper limiting block 14, if the moving plate 8 slides forward due to excessive extrusion pressure, the second rubber strip can buffer the moving plate 8 and reduce its instantaneous impact force.

[0046] The above are only the embodiments of the present invention, and do not limit the patent scope of the present invention accordingly. Any equivalent structure or equivalent process transformation made by using the specification and drawings of the present invention, or directly or indirectly applied to other related technical fields, shall be similarly included in the patent protection scope of the present invention.

Claims

1. An extrusion pressure detection device for an extruder, characterized in that, It includes a gantry (1). Two fixed plates (2) are slidably mounted on the inner wall of the top of the gantry (1). A same bidirectional lead screw (3) is rotatably mounted on the inner walls of both sides of the gantry (1). The bidirectional lead screw (3) penetrates through the two fixed plates (2) and is threadedly connected to the two fixed plates (2). C-shaped clamping plates (4) are fixedly mounted on the outer walls of the two fixed plates (2) on the side close to each other. Fixed arms (5) are provided on the outer walls of both sides of the gantry (1). A same support plate (6) is fixedly mounted on the outer walls of the two fixed arms (5) on the side close to each other. A sliding opening (7) is formed in the support plate (6). A moving plate (8) is slidably mounted in the sliding opening (7). A pressure sensor (9) and a support block (10) are fixedly mounted on the moving plate (8). A force-bearing rod (11) penetrates through and is slidably mounted on the support block (10). One end of the force-bearing rod (11) is in contact with the force-receiving end of the pressure sensor (9). A contact plate (12) is fixedly mounted on the other end of the force-bearing rod (11). A pressure digital display (13) is fixedly mounted on the moving plate (8). The output wire of the pressure sensor (9) is connected to the pressure digital display (13). An upper limiting block (14) is fixedly mounted on the top of the moving plate (8). The bottom of the upper limiting block (14) is in contact with the top of the support plate (6). A lower limiting block (15) is fixedly sleeved on the moving plate (8). The top of the lower limiting block (15) is in contact with the bottom of the support plate (6). A clamping mechanism (17) is arranged on the top of the support plate (6). The clamping mechanism (17) is used to limit the movement of the upper limiting block (14).

2. The extruder extrusion pressure detection device according to claim 1, characterized in that, The clamping mechanism (17) includes a first mounting block (1701). A pin rod (1702) penetrates through and is slidably mounted on the first mounting block (1701). A card slot (16) adapted to the pin rod (1702) is formed at one end of the upper limiting block (14) close to the first mounting block (1701). One end of the pin rod (1702) extends into the card slot (16). An end block (1703) is fixedly mounted on the end of the pin rod (1702) away from the upper limiting block (14). A retaining spring (1704) is sleeved on the pin rod (1702). One end of the retaining spring (1704) is fixedly connected to the end block (1703). The other end of the retaining spring (1704) is fixedly connected to the first mounting block (1701). A hand-pulling block (1705) is fixedly mounted on the outer wall of the end block (1703) away from the pin rod (1702).

3. The extruder extrusion pressure detection device according to claim 2, characterized in that, On one inner wall of the C-shaped clamp (4), two limit sliding rods (401) are installed through and slidably. At one end of the two limit sliding rods (401) located inside the C-shaped clamp (4), the same front side clamp (402) is fixedly installed. On one inner wall of the C-shaped clamp (4), a threaded rod (403) is installed. One end of the threaded rod (403) located inside the C-shaped clamp (4) is rotatably connected to the front side clamp (402). At the top of the C-shaped clamp (4), a top limiting plate (404) is fixedly installed.

4. The extruder extrusion pressure detection device according to claim 3, characterized in that On the outer wall of the front side clamp (402) away from the two limit sliding rods (401), an anti-slip pad is fixedly installed.

5. The extruder extrusion pressure detection device according to claim 2, wherein One side of the sliding opening (7) away from the moving plate (8) is open. Both of the fixed arms (5) are fixedly installed on the gantry (1) by bolts.

6. The extruder extrusion pressure detection device according to claim 5, characterized in that On the top of the support plate (6), a blocking and buffering mechanism (18) is provided. The blocking and buffering mechanism (18) includes two second mounting blocks (1801). On the two second mounting blocks (1801), the same blocking rod (1802) is rotatably installed. On the outer wall of the blocking rod (1802) close to the moving plate (8), a first rubber strip (1803) is fixedly installed. On the outer wall of the blocking rod (1802) away from the moving plate (8), a hand-held block (1804) is fixedly installed. On the top of the support plate (6), a strengthened blocking block is fixedly installed. The strengthened blocking block is in contact with the outer wall of the blocking rod (1802) away from the moving plate (8).

7. The extruder extrusion pressure detection device according to claim 2, wherein, One side of the sliding opening (7) away from the moving plate (8) is non-open. At the bottom of both of the fixed arms (5), square plug plates (20) are fixedly installed. On both inner walls of the gantry (1), square hollow cylinders (19) adapted to the square plug plates (20) are fixedly installed. Both of the square plug plates (20) penetrate through the corresponding square hollow cylinders (19) and are slidably connected to the inner walls of the corresponding square hollow cylinders (19).

8. The extruder extrusion pressure detection device according to claim 7, characterized in that At the two corners of the bottom of the square plug plate (20), a rounded corner design is adopted.

9. The extruder extrusion pressure detection device according to claim 7, characterized in that, On the inner wall of the sliding opening (7) away from the moving plate (8), a second rubber strip is fixedly installed.

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